Release v1.9.0

Adds support for copying non-image OCI artifacts, and for
creating and enforcing sigstore signatures.

Shell autocompletions are now auto-generated, adding support
for zsh, fish and PowerShell.

Now requires Go 1.17.

- Bump github.com/docker/docker
- Config files live in /usr/local/etc on FreeBSD
- Avoid hard-coding the location of bash
- Bump github.com/containers/storage from 1.40.2 to 1.41.0
- Bump github.com/docker/docker
- add completion command to generate shell completion scripts
- Remove cgo_pthread_ordering_workaround.go
- Update c/image
- Stop calling gpgme-config
- shell completion: add Makefile target
- shell completion: add install instructions docs
- shell completion: add completion for transports names
- [CI:DOCS] Pin actions to a full length commit SHA
- Updated skopeo logo with new artwork
- Update to gopkg.in/yaml.v3 v3.0.0
- fix make completions for all POSIX shells
- Update to github.com/opencontainers/runc >= 1.1.2
- Cirrus: use Ubuntu 22.04 LTS
- Bump github.com/containers/ocicrypt from 1.1.4 to 1.1.5
- Bump github.com/stretchr/testify from 1.7.1 to 1.7.2
- Bump github.com/docker/docker
- Update go.mod to Go 1.17
- Use testing.T.Setenv instead of os.Setenv in tests
- Change a repo used for sync tests
- Use an updated CI image
- Update for docker/distribution CLI change
- Enable schema1 support on the test registries
- CoPR: Autobuild rpm on rhcontainerbot/podman-next
- [CI:DOCS] Makefile: include cautionary note for rpm target
- [CI:DOCS] skopeo.spec.rpkg: Fix syntax highlighting
- Bump github.com/spf13/cobra from 1.4.0 to 1.5.0
- Bump github.com/stretchr/testify from 1.7.2 to 1.7.4
- Bump github.com/stretchr/testify from 1.7.4 to 1.7.5
- Cirrus: Migrate multiarch build off github actions
- Update & fix skopeo multiarch image Containerfiles
- Use bytes.ReplaceAll instead of bytes.Replace(..., -1)
- Update IRC information
- Bump github.com/stretchr/testify from 1.7.5 to 1.8.0
- Introduce noteCloseFailure, use it for reporting of cleanup errors
- Modify error messages on failures to close
- Remove uses of pkg/errors
- Use errors.As() instead of direct type checks
- Vendor unreleased c/image with OCI artifact support
- Revert "Change a repo used for sync tests"
- Vendor in c/image with sigstore support
- Add --sign-by-sigstore-private-key to (skopeo copy) and (skopeo sync)
- Update for the renames of sigstore to lookaside

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

.cirrus.yml

@@ -25,10 +25,10 @@ env:
     ####
     FEDORA_NAME: "fedora-36"
     PRIOR_FEDORA_NAME: "fedora-35"
-    UBUNTU_NAME: "ubuntu-2110"
+    UBUNTU_NAME: "ubuntu-2204"
 
     # Google-cloud VM Images
-    IMAGE_SUFFIX: "c4955393725038592"
+    IMAGE_SUFFIX: "c6340043416535040"
     FEDORA_CACHE_IMAGE_NAME: "fedora-${IMAGE_SUFFIX}"
     PRIOR_FEDORA_CACHE_IMAGE_NAME: "prior-fedora-${IMAGE_SUFFIX}"
     UBUNTU_CACHE_IMAGE_NAME: "ubuntu-${IMAGE_SUFFIX}"
@@ -53,7 +53,7 @@ validate_task:
     # The git-validation tool doesn't work well on branch or tag push,
     # under Cirrus-CI, due to challenges obtaining the starting commit ID.
     # Only do validation for PRs.
-    only_if: $CIRRUS_PR != ''
+    only_if: &is_pr $CIRRUS_PR != ''
     container:
         image: '${SKOPEO_CIDEV_CONTAINER_FQIN}'
         cpu: 4
@@ -63,7 +63,7 @@ validate_task:
         make vendor && hack/tree_status.sh
 
 doccheck_task:
-    only_if: $CIRRUS_PR != ''
+    only_if: *is_pr
     depends_on:
       - validate
     container:
@@ -81,7 +81,10 @@ doccheck_task:
       "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" doccheck
 
 osx_task:
-    only_if: &not_docs $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*'
+    # Run for regular PRs and those with [CI:BUILD] but not [CI:DOCS]
+    only_if: &not_docs_multiarch >-
+        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*' &&
+        $CIRRUS_CRON != 'multiarch'
     depends_on:
         - validate
     macos_instance:
@@ -102,10 +105,10 @@ osx_task:
 
 cross_task:
     alias: cross
-    only_if: *not_docs
+    only_if: *not_docs_multiarch
     depends_on:
         - validate
-    gce_instance:
+    gce_instance: &standardvm
         image_project: libpod-218412
         zone: "us-central1-f"
         cpu: 2
@@ -129,7 +132,11 @@ cross_task:
 #####
 test_skopeo_task:
     alias: test_skopeo
-    only_if: *not_docs
+    # Don't test for [CI:DOCS], [CI:BUILD], or 'multiarch' cron.
+    only_if: >-
+        $CIRRUS_CHANGE_TITLE !=~ '.*CI:BUILD.*' &&
+        $CIRRUS_CHANGE_TITLE !=~ '.*CI:DOCS.*' &&
+        $CIRRUS_CRON != 'multiarch'
     depends_on:
         - validate
     gce_instance:
@@ -162,6 +169,49 @@ test_skopeo_task:
         "${SKOPEO_PATH}/${SCRIPT_BASE}/runner.sh" system
 
 
+image_build_task: &image-build
+    name: "Build multi-arch $CTXDIR"
+    alias: image_build
+    # Some of these container images take > 1h to build, limit
+    # this task to a specific Cirrus-Cron entry with this name.
+    only_if: $CIRRUS_CRON == 'multiarch'
+    timeout_in: 120m  # emulation is sssllllooooowwww
+    gce_instance:
+        <<: *standardvm
+        image_name: build-push-${IMAGE_SUFFIX}
+        # More muscle required for parallel multi-arch build
+        type: "n2-standard-4"
+    matrix:
+        - env:
+            CTXDIR: contrib/skopeoimage/upstream
+        - env:
+            CTXDIR: contrib/skopeoimage/testing
+        - env:
+            CTXDIR: contrib/skopeoimage/stable
+    env:
+        SKOPEO_USERNAME: ENCRYPTED[4195884d23b154553f2ddb26a63fc9fbca50ba77b3e447e4da685d8639ed9bc94b9a86a9c77272c8c80d32ead9ca48da]
+        SKOPEO_PASSWORD: ENCRYPTED[36e06f9befd17e5da2d60260edb9ef0d40e6312e2bba4cf881d383f1b8b5a18c8e5a553aea2fdebf39cebc6bd3b3f9de]
+        CONTAINERS_USERNAME: ENCRYPTED[dd722c734641f103b394a3a834d51ca5415347e378637cf98ee1f99e64aad2ec3dbd4664c0d94cb0e06b83d89e9bbe91]
+        CONTAINERS_PASSWORD: ENCRYPTED[d8b0fac87fe251cedd26c864ba800480f9e0570440b9eb264265b67411b253a626fb69d519e188e6c9a7f525860ddb26]
+    main_script:
+        - source /etc/automation_environment
+        - main.sh $CIRRUS_REPO_CLONE_URL $CTXDIR
+
+
+test_image_build_task:
+    <<: *image-build
+    alias: test_image_build
+    # Allow this to run inside a PR w/ [CI:BUILD] only.
+    only_if: $CIRRUS_PR != '' && $CIRRUS_CHANGE_TITLE =~ '.*CI:BUILD.*'
+    # This takes a LONG time, only run when requested.  N/B: Any task
+    # made to depend on this one will block FOREVER unless triggered.
+    # DO NOT ADD THIS TASK AS DEPENDENCY FOR `success_task`.
+    trigger_type: manual
+    # Overwrite all 'env', don't push anything, just do the build.
+    env:
+        DRYRUN: 1
+
+
 # This task is critical.  It updates the "last-used by" timestamp stored
 # in metadata for all VM images.  This mechanism functions in tandem with
 # an out-of-band pruning operation to remove disused VM images.
@@ -200,6 +250,7 @@ success_task:
         - osx
         - cross
         - test_skopeo
+        - image_build
         - meta
     container: *smallcontainer
     env:

.github/workflows/check_cirrus_cron.yml

@@ -18,6 +18,9 @@ on:
     # Debug: Allow triggering job manually in github-actions WebUI
     workflow_dispatch: {}
 
+permissions:
+    contents: read
+
 env:
     # Debug-mode can reveal secrets, only enable by a secret value.
     # Ref: https://help.github.com/en/actions/configuring-and-managing-workflows/managing-a-workflow-run#enabling-step-debug-logging
@@ -32,12 +35,12 @@ jobs:
     cron_failures:
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@629c2de402a417ea7690ca6ce3f33229e27606a5 # v2
               with:
                   persist-credentials: false
 
             # Avoid duplicating cron_failures.sh in skopeo repo.
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@629c2de402a417ea7690ca6ce3f33229e27606a5 # v2
               with:
                   repository: containers/podman
                   path: '_podman'
@@ -71,7 +74,7 @@ jobs:
             - if: steps.cron.outputs.failures > 0
               name: Send failure notification e-mail
               # Ref: https://github.com/dawidd6/action-send-mail
-              uses: dawidd6/action-send-mail@v2.2.2
+              uses: dawidd6/action-send-mail@a80d851dc950256421f1d1d735a2dc1ef314ac8f # v2.2.2
               with:
                 server_address: ${{secrets.ACTION_MAIL_SERVER}}
                 server_port: 465
@@ -83,14 +86,14 @@ jobs:
                 body: file://./artifacts/email_body.txt
 
             - if: always()
-              uses: actions/upload-artifact@v2
+              uses: actions/upload-artifact@82c141cc518b40d92cc801eee768e7aafc9c2fa2 # v2
               with:
                   name: ${{ github.job }}_artifacts
                   path: artifacts/*
 
             - if: failure()
               name: Send error notification e-mail
-              uses: dawidd6/action-send-mail@v2.2.2
+              uses: dawidd6/action-send-mail@a80d851dc950256421f1d1d735a2dc1ef314ac8f # v2.2.2
               with:
                 server_address: ${{secrets.ACTION_MAIL_SERVER}}
                 server_port: 465

.github/workflows/multi-arch-build.yaml

@@ -1,209 +0,0 @@
----
-
-# Please see contrib/<reponame>image/README.md for details on the intentions
-# of this workflow.
-#
-# BIG FAT WARNING:  This workflow is duplicated across containers/skopeo,
-#                   containers/buildah, and containers/podman.  ANY AND
-#                   ALL CHANGES MADE HERE MUST BE MANUALLY DUPLICATED
-#                   TO THE OTHER REPOS.
-
-name: build multi-arch images
-
-on:
-  # Upstream tends to be very active, with many merges per day.
-  # Only run this daily via cron schedule, or manually, not by branch push.
-  schedule:
-    - cron:  '0 8 * * *'
-  # allows to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  multi:
-    name: multi-arch image build
-    env:
-      REPONAME: skopeo  # No easy way to parse this out of $GITHUB_REPOSITORY
-      # Server/namespace value used to format FQIN
-      REPONAME_QUAY_REGISTRY: quay.io/skopeo
-      CONTAINERS_QUAY_REGISTRY: quay.io/containers
-      # list of architectures for build
-      PLATFORMS: linux/amd64,linux/s390x,linux/ppc64le,linux/arm64
-      # Command to execute in container to obtain project version number
-      VERSION_CMD: "--version"  # skopeo is the entrypoint
-
-    # build several images (upstream, testing, stable) in parallel
-    strategy:
-      # By default, failure of one matrix item cancels all others
-      fail-fast: false
-      matrix:
-        # Builds are located under contrib/<reponame>image/<source> directory
-        source:
-          - upstream
-          - testing
-          - stable
-    runs-on: ubuntu-latest
-    # internal registry caches build for inspection before push
-    services:
-      registry:
-        image: quay.io/libpod/registry:2
-        ports:
-          - 5000:5000
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-        with:
-          driver-opts: network=host
-          install: true
-
-      - name: Build and locally push image
-        uses: docker/build-push-action@v2
-        with:
-          context: contrib/${{ env.REPONAME }}image/${{ matrix.source }}
-          file: ./contrib/${{ env.REPONAME }}image/${{ matrix.source }}/Dockerfile
-          platforms: ${{ env.PLATFORMS }}
-          push: true
-          tags: localhost:5000/${{ env.REPONAME }}/${{ matrix.source }}
-
-      # Simple verification that stable images work, and
-      # also grab version number use in forming the FQIN.
-      - name: amd64 container sniff test
-        if: matrix.source == 'stable'
-        id: sniff_test
-        run: |
-          podman pull --tls-verify=false \
-                            localhost:5000/$REPONAME/${{ matrix.source }}
-          VERSION_OUTPUT=$(podman run \
-                           localhost:5000/$REPONAME/${{ matrix.source }} \
-                           $VERSION_CMD)
-          echo "$VERSION_OUTPUT"
-          VERSION=$(awk -r -e "/^${REPONAME} version /"'{print $3}' <<<"$VERSION_OUTPUT")
-          test -n "$VERSION"
-          echo "::set-output name=version::$VERSION"
-
-      - name: Generate image FQIN(s) to push
-        id: reponame_reg
-        run: |
-          if [[ "${{ matrix.source }}" == 'stable' ]]; then
-            # The command version in image just built
-            VERSION='v${{ steps.sniff_test.outputs.version }}'
-            # workaround vim syntax-highlight bug: '
-            # Push both new|updated version-tag and latest-tag FQINs
-            FQIN="$REPONAME_QUAY_REGISTRY/stable:$VERSION,$REPONAME_QUAY_REGISTRY/stable:latest"
-          elif [[ "${{ matrix.source }}" == 'testing' ]]; then
-            # Assume some contents changed, always push latest testing.
-            FQIN="$REPONAME_QUAY_REGISTRY/testing:latest"
-          elif [[ "${{ matrix.source }}" == 'upstream' ]]; then
-            # Assume some contents changed, always push latest upstream.
-            FQIN="$REPONAME_QUAY_REGISTRY/upstream:latest"
-          else
-            echo "::error::Unknown matrix item '${{ matrix.source }}'"
-            exit 1
-          fi
-          echo "::warning::Pushing $FQIN"
-          echo "::set-output name=fqin::${FQIN}"
-          echo '::set-output name=push::true'
-
-      # This is substantially similar to the above logic,
-      # but only handles $CONTAINERS_QUAY_REGISTRY for
-      # the stable "latest" and named-version tagged images.
-      - name: Generate containers reg. image FQIN(s)
-        if: matrix.source == 'stable'
-        id: containers_reg
-        run: |
-          VERSION='v${{ steps.sniff_test.outputs.version }}'
-          # workaround vim syntax-highlight bug: '
-          # Push both new|updated version-tag and latest-tag FQINs
-          FQIN="$CONTAINERS_QUAY_REGISTRY/$REPONAME:$VERSION,$CONTAINERS_QUAY_REGISTRY/$REPONAME:latest"
-          echo "::warning::Pushing $FQIN"
-          echo "::set-output name=fqin::${FQIN}"
-          echo '::set-output name=push::true'
-
-      - name: Define LABELS multi-line env. var. value
-        run: |
-          # This is a really hacky/strange workflow idiom, required
-          # for setting multi-line $LABELS value for consumption in
-          # a future step.  There is literally no cleaner way to do this :<
-          # https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#multiline-strings
-          function set_labels() {
-            echo 'LABELS<<DELIMITER' >> "$GITHUB_ENV"
-            for line; do
-                echo "$line" | tee -a "$GITHUB_ENV"
-            done
-            echo "DELIMITER" >> "$GITHUB_ENV"
-          }
-
-          declare -a lines
-          lines=(\
-            "org.opencontainers.image.source=https://github.com/${GITHUB_REPOSITORY}.git"
-            "org.opencontainers.image.revision=${GITHUB_SHA}"
-            "org.opencontainers.image.created=$(date -u --iso-8601=seconds)"
-          )
-
-          # Only the 'stable' matrix source obtains $VERSION
-          if [[ "${{ matrix.source }}" == "stable" ]]; then
-            lines+=(\
-              "org.opencontainers.image.version=${{ steps.sniff_test.outputs.version }}"
-            )
-          fi
-
-          set_labels "${lines[@]}"
-
-      # Separate steps to login and push for $REPONAME_QUAY_REGISTRY and
-      # $CONTAINERS_QUAY_REGISTRY are required, because 2 sets of credentials
-      # are used and namespaced within the registry.  At the same time, reuse
-      # of non-shell steps is not supported by Github Actions nor are YAML
-      # anchors/aliases, nor composite actions.
-
-      # Push to $REPONAME_QUAY_REGISTRY for stable, testing. and upstream
-      - name: Login to ${{ env.REPONAME_QUAY_REGISTRY }}
-        uses: docker/login-action@v1
-        if: steps.reponame_reg.outputs.push == 'true'
-        with:
-          registry: ${{ env.REPONAME_QUAY_REGISTRY }}
-          # N/B: Secrets are not passed to workflows that are triggered
-          #      by a pull request from a fork
-          username: ${{ secrets.REPONAME_QUAY_USERNAME }}
-          password: ${{ secrets.REPONAME_QUAY_PASSWORD }}
-
-      - name: Push images to ${{ steps.reponame_reg.outputs.fqin }}
-        uses: docker/build-push-action@v2
-        if: steps.reponame_reg.outputs.push == 'true'
-        with:
-          cache-from: type=registry,ref=localhost:5000/${{ env.REPONAME }}/${{ matrix.source }}
-          cache-to: type=inline
-          context: contrib/${{ env.REPONAME }}image/${{ matrix.source }}
-          file: ./contrib/${{ env.REPONAME }}image/${{ matrix.source }}/Dockerfile
-          platforms: ${{ env.PLATFORMS }}
-          push: true
-          tags: ${{ steps.reponame_reg.outputs.fqin }}
-          labels: |
-            ${{ env.LABELS }}
-
-      # Push to $CONTAINERS_QUAY_REGISTRY only stable
-      - name: Login to ${{ env.CONTAINERS_QUAY_REGISTRY }}
-        if: steps.containers_reg.outputs.push == 'true'
-        uses: docker/login-action@v1
-        with:
-          registry: ${{ env.CONTAINERS_QUAY_REGISTRY}}
-          username: ${{ secrets.CONTAINERS_QUAY_USERNAME }}
-          password: ${{ secrets.CONTAINERS_QUAY_PASSWORD }}
-
-      - name: Push images to ${{ steps.containers_reg.outputs.fqin }}
-        if: steps.containers_reg.outputs.push == 'true'
-        uses: docker/build-push-action@v2
-        with:
-          cache-from: type=registry,ref=localhost:5000/${{ env.REPONAME }}/${{ matrix.source }}
-          cache-to: type=inline
-          context: contrib/${{ env.REPONAME }}image/${{ matrix.source }}
-          file: ./contrib/${{ env.REPONAME }}image/${{ matrix.source }}/Dockerfile
-          platforms: ${{ env.PLATFORMS }}
-          push: true
-          tags: ${{ steps.containers_reg.outputs.fqin }}
-          labels: |
-            ${{ env.LABELS }}

.github/workflows/stale.yml

@@ -7,13 +7,17 @@ on:
   schedule:
   - cron: "0 0 * * *"
 
+permissions:
+  contents: read
+
 jobs:
   stale:
-
+    permissions:
+      issues: write  # for actions/stale to close stale issues
+      pull-requests: write  # for actions/stale to close stale PRs
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/stale@v1
+    - uses: actions/stale@98ed4cb500039dbcccf4bd9bedada4d0187f2757 # v3
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'A friendly reminder that this issue had no activity for 30 days.'

.gitignore

@@ -2,7 +2,7 @@
 /layers-*
 /skopeo
 result
-
+/completions/
 # ignore JetBrains IDEs (GoLand) config folder
 .idea
 

CONTRIBUTING.md

@@ -149,7 +149,7 @@ When new PRs for [containers/image](https://github.com/containers/image) break `
 ## Communications
 
 For general questions, or discussions, please use the 
-IRC group on `irc.freenode.net` called `container-projects`
+IRC channel on `irc.libera.chat` called `#container-projects`
 that has been setup.
 
 For discussions around issues/bugs and features, you can use the github

Makefile

@@ -2,23 +2,22 @@
 
 export GOPROXY=https://proxy.golang.org
 
-# On some platforms (eg. macOS, FreeBSD) gpgme is installed in /usr/local/ but /usr/local/include/ is
-# not in the default search path. Rather than hard-code this directory, use gpgme-config.
-# Sadly that must be done at the top-level user instead of locally in the gpgme subpackage, because cgo
-# supports only pkg-config, not general shell scripts, and gpgme does not install a pkg-config file.
-# If gpgme is not installed or gpgme-config can’t be found for other reasons, the error is silently ignored
-# (and the user will probably find out because the cgo compilation will fail).
-GPGME_ENV := CGO_CFLAGS="$(shell gpgme-config --cflags 2>/dev/null)" CGO_LDFLAGS="$(shell gpgme-config --libs 2>/dev/null)"
-
 # The following variables very roughly follow https://www.gnu.org/prep/standards/standards.html#Makefile-Conventions .
 DESTDIR ?=
 PREFIX ?= /usr/local
+ifeq ($(shell uname -s),FreeBSD)
+CONTAINERSCONFDIR ?= /usr/local/etc/containers
+else
 CONTAINERSCONFDIR ?= /etc/containers
+endif
 REGISTRIESDDIR ?= ${CONTAINERSCONFDIR}/registries.d
-SIGSTOREDIR ?= /var/lib/containers/sigstore
+LOOKASIDEDIR ?= /var/lib/containers/sigstore
 BINDIR ?= ${PREFIX}/bin
 MANDIR ?= ${PREFIX}/share/man
-BASHCOMPLETIONSDIR ?= ${PREFIX}/share/bash-completion/completions
+
+BASHINSTALLDIR=${PREFIX}/share/bash-completion/completions
+ZSHINSTALLDIR=${PREFIX}/share/zsh/site-functions
+FISHINSTALLDIR=${PREFIX}/share/fish/vendor_completions.d
 
 GO ?= go
 GOBIN := $(shell $(GO) env GOBIN)
@@ -137,7 +136,7 @@ binary: cmd/skopeo
 # Build w/o using containers
 .PHONY: bin/skopeo
 bin/skopeo:
-	$(GPGME_ENV) $(GO) build $(MOD_VENDOR) ${GO_DYN_FLAGS} ${SKOPEO_LDFLAGS} -gcflags "$(GOGCFLAGS)" -tags "$(BUILDTAGS)" -o $@ ./cmd/skopeo
+	$(GO) build $(MOD_VENDOR) ${GO_DYN_FLAGS} ${SKOPEO_LDFLAGS} -gcflags "$(GOGCFLAGS)" -tags "$(BUILDTAGS)" -o $@ ./cmd/skopeo
 bin/skopeo.%:
 	GOOS=$(word 2,$(subst ., ,$@)) GOARCH=$(word 3,$(subst ., ,$@)) $(GO) build $(MOD_VENDOR) ${SKOPEO_LDFLAGS} -tags "containers_image_openpgp $(BUILDTAGS)" -o $@ ./cmd/skopeo
 local-cross: bin/skopeo.darwin.amd64 bin/skopeo.linux.arm bin/skopeo.linux.arm64 bin/skopeo.windows.386.exe bin/skopeo.windows.amd64.exe
@@ -152,11 +151,19 @@ docs: $(MANPAGES)
 docs-in-container:
 	${CONTAINER_RUN} $(MAKE) docs $(if $(DEBUG),DEBUG=$(DEBUG))
 
+.PHONY: completions
+completions: bin/skopeo
+	install -d -m 755 completions/bash completions/zsh completions/fish completions/powershell
+	./bin/skopeo completion bash >| completions/bash/skopeo
+	./bin/skopeo completion zsh >| completions/zsh/_skopeo
+	./bin/skopeo completion fish >| completions/fish/skopeo.fish
+	./bin/skopeo completion powershell >| completions/powershell/skopeo.ps1
+
 clean:
-	rm -rf bin docs/*.1
+	rm -rf bin docs/*.1 completions/
 
 install: install-binary install-docs install-completions
-	install -d -m 755 ${DESTDIR}${SIGSTOREDIR}
+	install -d -m 755 ${DESTDIR}${LOOKASIDEDIR}
 	install -d -m 755 ${DESTDIR}${CONTAINERSCONFDIR}
 	install -m 644 default-policy.json ${DESTDIR}${CONTAINERSCONFDIR}/policy.json
 	install -d -m 755 ${DESTDIR}${REGISTRIESDDIR}
@@ -172,9 +179,14 @@ ifneq ($(DISABLE_DOCS), 1)
 	install -m 644 docs/*.1 ${DESTDIR}${MANDIR}/man1
 endif
 
-install-completions:
-	install -m 755 -d ${DESTDIR}${BASHCOMPLETIONSDIR}
-	install -m 644 completions/bash/skopeo ${DESTDIR}${BASHCOMPLETIONSDIR}/skopeo
+install-completions: completions
+	install -d -m 755 ${DESTDIR}${BASHINSTALLDIR}
+	install -m 644 completions/bash/skopeo ${DESTDIR}${BASHINSTALLDIR}
+	install -d -m 755 ${DESTDIR}${ZSHINSTALLDIR}
+	install -m 644 completions/zsh/_skopeo ${DESTDIR}${ZSHINSTALLDIR}
+	install -d -m 755 ${DESTDIR}${FISHINSTALLDIR}
+	install -m 644 completions/fish/skopeo.fish ${DESTDIR}${FISHINSTALLDIR}
+	# There is no common location for powershell files so do not install them. Users have to source the file from their powershell profile.
 
 shell:
 	$(CONTAINER_RUN) bash
@@ -227,7 +239,7 @@ validate-docs:
 	hack/xref-helpmsgs-manpages
 
 test-unit-local: bin/skopeo
-	$(GPGME_ENV) $(GO) test $(MOD_VENDOR) -tags "$(BUILDTAGS)" $$($(GO) list $(MOD_VENDOR) -tags "$(BUILDTAGS)" -e ./... | grep -v '^github\.com/containers/skopeo/\(integration\|vendor/.*\)$$')
+	$(GO) test $(MOD_VENDOR) -tags "$(BUILDTAGS)" $$($(GO) list $(MOD_VENDOR) -tags "$(BUILDTAGS)" -e ./... | grep -v '^github\.com/containers/skopeo/\(integration\|vendor/.*\)$$')
 
 vendor:
 	$(GO) mod tidy
@@ -236,3 +248,8 @@ vendor:
 
 vendor-in-container:
 	podman run --privileged --rm --env HOME=/root -v $(CURDIR):/src -w /src quay.io/libpod/golang:1.16 $(MAKE) vendor
+
+# CAUTION: This is not a replacement for RPMs provided by your distro.
+# Only intended to build and test the latest unreleased changes.
+rpm:
+	rpkg local

cmd/skopeo/cgo_pthread_ordering_workaround.go

@@ -1,35 +0,0 @@
-//go:build !containers_image_openpgp
-// +build !containers_image_openpgp
-
-package main
-
-/*
-This is a pretty horrible workaround.  Due to a glibc bug
-https://bugzilla.redhat.com/show_bug.cgi?id=1326903 , we must ensure we link
-with -lgpgme before -lpthread.  Such arguments come from various packages
-using cgo, and the ordering of these arguments is, with current (go tool link),
-dependent on the order in which the cgo-using packages are found in a
-breadth-first search following dependencies, starting from “main”.
-
-Thus, if
-   import "net"
-is processed before
-   import "…/skopeo/signature"
-it will, in the next level of the BFS, pull in "runtime/cgo" (a dependency of
-"net") before "mtrmac/gpgme" (a dependency of "…/skopeo/signature"), causing
--lpthread (used by "runtime/cgo") to be used before -lgpgme.
-
-This might be possible to work around by careful import ordering, or by removing
-a direct dependency on "net", but that would be very fragile.
-
-So, until the above bug is fixed, add -lgpgme directly in the "main" package
-to ensure the needed build order.
-
-Unfortunately, this workaround needs to be applied at the top level of any user
-of "…/skopeo/signature"; it cannot be added to "…/skopeo/signature" itself,
-by that time this package is first processed by the linker, a -lpthread may
-already be queued and it would be too late.
-*/
-
-// #cgo LDFLAGS: -lgpgme
-import "C"

cmd/skopeo/completions.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"github.com/containers/image/v5/transports"
+	"github.com/spf13/cobra"
+)
+
+// autocompleteSupportedTransports list all supported transports with the colon suffix.
+func autocompleteSupportedTransports(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	tps := transports.ListNames()
+	suggestions := make([]string, 0, len(tps))
+	for _, tp := range tps {
+		suggestions = append(suggestions, tp+":")
+	}
+	return suggestions, cobra.ShellCompDirectiveNoFileComp
+}

cmd/skopeo/copy.go

@@ -21,25 +21,26 @@ import (
 )
 
 type copyOptions struct {
-	global              *globalOptions
-	deprecatedTLSVerify *deprecatedTLSVerifyOption
-	srcImage            *imageOptions
-	destImage           *imageDestOptions
-	retryOpts           *retry.RetryOptions
-	additionalTags      []string                  // For docker-archive: destinations, in addition to the name:tag specified as destination, also add these
-	removeSignatures    bool                      // Do not copy signatures from the source image
-	signByFingerprint   string                    // Sign the image using a GPG key with the specified fingerprint
-	signPassphraseFile  string                    // Path pointing to a passphrase file when signing
-	signIdentity        string                    // Identity of the signed image, must be a fully specified docker reference
-	digestFile          string                    // Write digest to this file
-	format              commonFlag.OptionalString // Force conversion of the image to a specified format
-	quiet               bool                      // Suppress output information when copying images
-	all                 bool                      // Copy all of the images if the source is a list
-	multiArch           commonFlag.OptionalString // How to handle multi architecture images
-	preserveDigests     bool                      // Preserve digests during copy
-	encryptLayer        []int                     // The list of layers to encrypt
-	encryptionKeys      []string                  // Keys needed to encrypt the image
-	decryptionKeys      []string                  // Keys needed to decrypt the image
+	global                   *globalOptions
+	deprecatedTLSVerify      *deprecatedTLSVerifyOption
+	srcImage                 *imageOptions
+	destImage                *imageDestOptions
+	retryOpts                *retry.RetryOptions
+	additionalTags           []string                  // For docker-archive: destinations, in addition to the name:tag specified as destination, also add these
+	removeSignatures         bool                      // Do not copy signatures from the source image
+	signByFingerprint        string                    // Sign the image using a GPG key with the specified fingerprint
+	signBySigstorePrivateKey string                    // Sign the image using a sigstore private key
+	signPassphraseFile       string                    // Path pointing to a passphrase file when signing (for either signature format, but only one of them)
+	signIdentity             string                    // Identity of the signed image, must be a fully specified docker reference
+	digestFile               string                    // Write digest to this file
+	format                   commonFlag.OptionalString // Force conversion of the image to a specified format
+	quiet                    bool                      // Suppress output information when copying images
+	all                      bool                      // Copy all of the images if the source is a list
+	multiArch                commonFlag.OptionalString // How to handle multi architecture images
+	preserveDigests          bool                      // Preserve digests during copy
+	encryptLayer             []int                     // The list of layers to encrypt
+	encryptionKeys           []string                  // Keys needed to encrypt the image
+	decryptionKeys           []string                  // Keys needed to decrypt the image
 }
 
 func copyCmd(global *globalOptions) *cobra.Command {
@@ -64,8 +65,9 @@ Supported transports:
 
 See skopeo(1) section "IMAGE NAMES" for the expected format
 `, strings.Join(transports.ListNames(), ", ")),
-		RunE:    commandAction(opts.run),
-		Example: `skopeo copy docker://quay.io/skopeo/stable:latest docker://registry.example.com/skopeo:latest`,
+		RunE:              commandAction(opts.run),
+		Example:           `skopeo copy docker://quay.io/skopeo/stable:latest docker://registry.example.com/skopeo:latest`,
+		ValidArgsFunction: autocompleteSupportedTransports,
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
@@ -81,7 +83,8 @@ See skopeo(1) section "IMAGE NAMES" for the expected format
 	flags.BoolVar(&opts.preserveDigests, "preserve-digests", false, "Preserve digests of images and lists")
 	flags.BoolVar(&opts.removeSignatures, "remove-signatures", false, "Do not copy signatures from SOURCE-IMAGE")
 	flags.StringVar(&opts.signByFingerprint, "sign-by", "", "Sign the image using a GPG key with the specified `FINGERPRINT`")
-	flags.StringVar(&opts.signPassphraseFile, "sign-passphrase-file", "", "File that contains a passphrase for the --sign-by key")
+	flags.StringVar(&opts.signBySigstorePrivateKey, "sign-by-sigstore-private-key", "", "Sign the image using a sigstore private key at `PATH`")
+	flags.StringVar(&opts.signPassphraseFile, "sign-passphrase-file", "", "Read a passphrase for signing an image from `PATH`")
 	flags.StringVar(&opts.signIdentity, "sign-identity", "", "Identity of signed image, must be a fully specified docker reference. Defaults to the target docker reference.")
 	flags.StringVar(&opts.digestFile, "digestfile", "", "Write the digest of the pushed image to the specified file")
 	flags.VarP(commonFlag.NewOptionalStringValue(&opts.format), "format", "f", `MANIFEST TYPE (oci, v2s1, or v2s2) to use in the destination (default is manifest type of source, with fallbacks)`)
@@ -129,7 +132,7 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 	}
 	defer func() {
 		if err := policyContext.Destroy(); err != nil {
-			retErr = fmt.Errorf("(error tearing down policy context: %v): %w", err, retErr)
+			retErr = noteCloseFailure(retErr, "tearing down policy context", err)
 		}
 	}()
 
@@ -228,10 +231,26 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 		decConfig = cc.DecryptConfig
 	}
 
-	passphrase, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
-	if err != nil {
-		return err
+	// c/image/copy.Image does allow creating both simple signing and sigstore signatures simultaneously,
+	// with independent passphrases, but that would make the CLI probably too confusing.
+	// For now, use the passphrase with either, but only one of them.
+	if opts.signPassphraseFile != "" && opts.signByFingerprint != "" && opts.signBySigstorePrivateKey != "" {
+		return fmt.Errorf("Only one of --sign-by and sign-by-sigstore-private-key can be used with sign-passphrase-file")
 	}
+	var passphrase string
+	if opts.signPassphraseFile != "" {
+		p, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
+		if err != nil {
+			return err
+		}
+		passphrase = p
+	} else if opts.signBySigstorePrivateKey != "" {
+		p, err := promptForPassphrase(opts.signBySigstorePrivateKey, os.Stdin, os.Stdout)
+		if err != nil {
+			return err
+		}
+		passphrase = p
+	} // opts.signByFingerprint triggers a GPG-agent passphrase prompt, possibly using a more secure channel, so we usually shouldn’t prompt ourselves if no passphrase was explicitly provided.
 
 	var signIdentity reference.Named = nil
 	if opts.signIdentity != "" {
@@ -243,19 +262,21 @@ func (opts *copyOptions) run(args []string, stdout io.Writer) (retErr error) {
 
 	return retry.RetryIfNecessary(ctx, func() error {
 		manifestBytes, err := copy.Image(ctx, policyContext, destRef, srcRef, &copy.Options{
-			RemoveSignatures:      opts.removeSignatures,
-			SignBy:                opts.signByFingerprint,
-			SignPassphrase:        passphrase,
-			SignIdentity:          signIdentity,
-			ReportWriter:          stdout,
-			SourceCtx:             sourceCtx,
-			DestinationCtx:        destinationCtx,
-			ForceManifestMIMEType: manifestType,
-			ImageListSelection:    imageListSelection,
-			PreserveDigests:       opts.preserveDigests,
-			OciDecryptConfig:      decConfig,
-			OciEncryptLayers:      encLayers,
-			OciEncryptConfig:      encConfig,
+			RemoveSignatures:                 opts.removeSignatures,
+			SignBy:                           opts.signByFingerprint,
+			SignPassphrase:                   passphrase,
+			SignBySigstorePrivateKeyFile:     opts.signBySigstorePrivateKey,
+			SignSigstorePrivateKeyPassphrase: []byte(passphrase),
+			SignIdentity:                     signIdentity,
+			ReportWriter:                     stdout,
+			SourceCtx:                        sourceCtx,
+			DestinationCtx:                   destinationCtx,
+			ForceManifestMIMEType:            manifestType,
+			ImageListSelection:               imageListSelection,
+			PreserveDigests:                  opts.preserveDigests,
+			OciDecryptConfig:                 decConfig,
+			OciEncryptLayers:                 encLayers,
+			OciEncryptConfig:                 encConfig,
 		})
 		if err != nil {
 			return err

cmd/skopeo/delete.go

@@ -35,8 +35,9 @@ Supported transports:
 %s
 See skopeo(1) section "IMAGE NAMES" for the expected format
 `, strings.Join(transports.ListNames(), ", ")),
-		RunE:    commandAction(opts.run),
-		Example: `skopeo delete docker://registry.example.com/example/pause:latest`,
+		RunE:              commandAction(opts.run),
+		Example:           `skopeo delete docker://registry.example.com/example/pause:latest`,
+		ValidArgsFunction: autocompleteSupportedTransports,
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()

cmd/skopeo/inspect.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -18,7 +19,6 @@ import (
 	"github.com/containers/image/v5/types"
 	"github.com/containers/skopeo/cmd/skopeo/inspect"
 	v1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
@@ -55,6 +55,7 @@ See skopeo(1) section "IMAGE NAMES" for the expected format
 		Example: `skopeo inspect docker://registry.fedoraproject.org/fedora
   skopeo inspect --config docker://docker.io/alpine
   skopeo inspect  --format "Name: {{.Name}} Digest: {{.Digest}}" docker://registry.access.redhat.com/ubi8`,
+		ValidArgsFunction: autocompleteSupportedTransports,
 	}
 	adjustUsage(cmd)
 	flags := cmd.Flags()
@@ -99,12 +100,12 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 		src, err = parseImageSource(ctx, opts.image, imageName)
 		return err
 	}, opts.retryOpts); err != nil {
-		return errors.Wrapf(err, "Error parsing image name %q", imageName)
+		return fmt.Errorf("Error parsing image name %q: %w", imageName, err)
 	}
 
 	defer func() {
 		if err := src.Close(); err != nil {
-			retErr = errors.Wrapf(retErr, fmt.Sprintf("(could not close image: %v) ", err))
+			retErr = noteCloseFailure(retErr, "closing image", err)
 		}
 	}()
 
@@ -112,13 +113,13 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 		rawManifest, _, err = src.GetManifest(ctx, nil)
 		return err
 	}, opts.retryOpts); err != nil {
-		return errors.Wrapf(err, "Error retrieving manifest for image")
+		return fmt.Errorf("Error retrieving manifest for image: %w", err)
 	}
 
 	if opts.raw && !opts.config {
 		_, err := stdout.Write(rawManifest)
 		if err != nil {
-			return fmt.Errorf("Error writing manifest to standard output: %v", err)
+			return fmt.Errorf("Error writing manifest to standard output: %w", err)
 		}
 
 		return nil
@@ -126,7 +127,7 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 
 	img, err := image.FromUnparsedImage(ctx, sys, image.UnparsedInstance(src, nil))
 	if err != nil {
-		return errors.Wrapf(err, "Error parsing manifest for image")
+		return fmt.Errorf("Error parsing manifest for image: %w", err)
 	}
 
 	if opts.config && opts.raw {
@@ -135,11 +136,11 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 			configBlob, err = img.ConfigBlob(ctx)
 			return err
 		}, opts.retryOpts); err != nil {
-			return errors.Wrapf(err, "Error reading configuration blob")
+			return fmt.Errorf("Error reading configuration blob: %w", err)
 		}
 		_, err = stdout.Write(configBlob)
 		if err != nil {
-			return errors.Wrapf(err, "Error writing configuration blob to standard output")
+			return fmt.Errorf("Error writing configuration blob to standard output: %w", err)
 		}
 		return nil
 	} else if opts.config {
@@ -148,7 +149,7 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 			config, err = img.OCIConfig(ctx)
 			return err
 		}, opts.retryOpts); err != nil {
-			return errors.Wrapf(err, "Error reading OCI-formatted configuration data")
+			return fmt.Errorf("Error reading OCI-formatted configuration data: %w", err)
 		}
 		if report.IsJSON(opts.format) || opts.format == "" {
 			var out []byte
@@ -162,7 +163,7 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 			err = printTmpl(row, data)
 		}
 		if err != nil {
-			return errors.Wrapf(err, "Error writing OCI-formatted configuration data to standard output")
+			return fmt.Errorf("Error writing OCI-formatted configuration data to standard output: %w", err)
 		}
 		return nil
 	}
@@ -189,7 +190,7 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 	}
 	outputData.Digest, err = manifest.Digest(rawManifest)
 	if err != nil {
-		return errors.Wrapf(err, "Error computing manifest digest")
+		return fmt.Errorf("Error computing manifest digest: %w", err)
 	}
 	if dockerRef := img.Reference().DockerReference(); dockerRef != nil {
 		outputData.Name = dockerRef.Name()
@@ -207,7 +208,7 @@ func (opts *inspectOptions) run(args []string, stdout io.Writer) (retErr error)
 			// In addition, AWS ECR rejects it with 403 (Forbidden) if the "ecr:ListImages"
 			// action is not allowed.
 			if !strings.Contains(err.Error(), "401") && !strings.Contains(err.Error(), "403") {
-				return errors.Wrapf(err, "Error determining repository tags")
+				return fmt.Errorf("Error determining repository tags: %w", err)
 			}
 			logrus.Warnf("Registry disallows tag list retrieval; skipping")
 		}

cmd/skopeo/layers.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -12,7 +13,6 @@ import (
 	"github.com/containers/image/v5/pkg/blobinfocache"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -79,14 +79,14 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 		return err
 	}, opts.retryOpts); err != nil {
 		if closeErr := rawSource.Close(); closeErr != nil {
-			return errors.Wrapf(err, " (close error: %v)", closeErr)
+			return fmt.Errorf("%w (closing image source: %v)", err, closeErr)
 		}
 
 		return err
 	}
 	defer func() {
 		if err := src.Close(); err != nil {
-			retErr = errors.Wrapf(retErr, " (close error: %v)", err)
+			retErr = noteCloseFailure(retErr, "closing image", err)
 		}
 	}()
 
@@ -136,7 +136,7 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 
 	defer func() {
 		if err := dest.Close(); err != nil {
-			retErr = errors.Wrapf(retErr, " (close error: %v)", err)
+			retErr = noteCloseFailure(retErr, "closing destination", err)
 		}
 	}()
 
@@ -153,7 +153,7 @@ func (opts *layersOptions) run(args []string, stdout io.Writer) (retErr error) {
 		}
 		if _, err := dest.PutBlob(ctx, r, types.BlobInfo{Digest: bd.digest, Size: blobSize}, cache, bd.isConfig); err != nil {
 			if closeErr := r.Close(); closeErr != nil {
-				return errors.Wrapf(err, " (close error: %v)", closeErr)
+				return fmt.Errorf("%w (close error: %v)", err, closeErr)
 			}
 			return err
 		}

cmd/skopeo/list_tags.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"sort"
@@ -14,7 +15,6 @@ import (
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -81,12 +81,12 @@ See skopeo-list-tags(1) section "REPOSITORY NAMES" for the expected format
 // Would really love to not have this, but needed to enforce tag-less and digest-less names
 func parseDockerRepositoryReference(refString string) (types.ImageReference, error) {
 	if !strings.HasPrefix(refString, docker.Transport.Name()+"://") {
-		return nil, errors.Errorf("docker: image reference %s does not start with %s://", refString, docker.Transport.Name())
+		return nil, fmt.Errorf("docker: image reference %s does not start with %s://", refString, docker.Transport.Name())
 	}
 
 	parts := strings.SplitN(refString, ":", 2)
 	if len(parts) != 2 {
-		return nil, errors.Errorf(`Invalid image name "%s", expected colon-separated transport:reference`, refString)
+		return nil, fmt.Errorf(`Invalid image name "%s", expected colon-separated transport:reference`, refString)
 	}
 
 	ref, err := reference.ParseNormalizedNamed(strings.TrimPrefix(parts[1], "//"))
@@ -108,7 +108,7 @@ func listDockerTags(ctx context.Context, sys *types.SystemContext, imgRef types.
 
 	tags, err := docker.GetRepositoryTags(ctx, sys, imgRef)
 	if err != nil {
-		return ``, nil, fmt.Errorf("Error listing repository tags: %v", err)
+		return ``, nil, fmt.Errorf("Error listing repository tags: %w", err)
 	}
 	return repositoryName, tags, nil
 }

cmd/skopeo/main.go

@@ -63,11 +63,8 @@ func createApp() (*cobra.Command, *globalOptions) {
 		},
 		SilenceUsage:  true,
 		SilenceErrors: true,
-		// Currently, skopeo uses manually written completions.  Cobra allows
-		// for auto-generating completions for various shells.  Podman is
-		// already making us of that.  If Skopeo decides to follow, please
-		// remove the line below (and hide the `completion` command).
-		CompletionOptions: cobra.CompletionOptions{DisableDefaultCmd: true},
+		// Hide the completion command which is provided by cobra
+		CompletionOptions: cobra.CompletionOptions{HiddenDefaultCmd: true},
 		// This is documented to parse "local" (non-PersistentFlags) flags of parent commands before
 		// running subcommands and handling their options. We don't really run into such cases,
 		// because all of our flags on rootCommand are in PersistentFlags, except for the deprecated --tls-verify;

cmd/skopeo/signing_test.go

@@ -38,8 +38,7 @@ func TestStandaloneSign(t *testing.T) {
 
 	manifestPath := "fixtures/image.manifest.json"
 	dockerReference := "testing/manifest"
-	os.Setenv("GNUPGHOME", "fixtures")
-	defer os.Unsetenv("GNUPGHOME")
+	t.Setenv("GNUPGHOME", "fixtures")
 
 	// Invalid command-line arguments
 	for _, args := range [][]string{
@@ -101,8 +100,7 @@ func TestStandaloneVerify(t *testing.T) {
 	manifestPath := "fixtures/image.manifest.json"
 	signaturePath := "fixtures/image.signature"
 	dockerReference := "testing/manifest"
-	os.Setenv("GNUPGHOME", "fixtures")
-	defer os.Unsetenv("GNUPGHOME")
+	t.Setenv("GNUPGHOME", "fixtures")
 
 	// Invalid command-line arguments
 	for _, args := range [][]string{

cmd/skopeo/sync.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"io/fs"
@@ -21,7 +22,6 @@ import (
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"gopkg.in/yaml.v2"
@@ -29,22 +29,23 @@ import (
 
 // syncOptions contains information retrieved from the skopeo sync command line.
 type syncOptions struct {
-	global              *globalOptions // Global (not command dependent) skopeo options
-	deprecatedTLSVerify *deprecatedTLSVerifyOption
-	srcImage            *imageOptions     // Source image options
-	destImage           *imageDestOptions // Destination image options
-	retryOpts           *retry.RetryOptions
-	removeSignatures    bool                      // Do not copy signatures from the source image
-	signByFingerprint   string                    // Sign the image using a GPG key with the specified fingerprint
-	signPassphraseFile  string                    // Path pointing to a passphrase file when signing
-	format              commonFlag.OptionalString // Force conversion of the image to a specified format
-	source              string                    // Source repository name
-	destination         string                    // Destination registry name
-	scoped              bool                      // When true, namespace copied images at destination using the source repository name
-	all                 bool                      // Copy all of the images if an image in the source is a list
-	dryRun              bool                      // Don't actually copy anything, just output what it would have done
-	preserveDigests     bool                      // Preserve digests during sync
-	keepGoing           bool                      // Whether or not to abort the sync if there are any errors during syncing the images
+	global                   *globalOptions // Global (not command dependent) skopeo options
+	deprecatedTLSVerify      *deprecatedTLSVerifyOption
+	srcImage                 *imageOptions     // Source image options
+	destImage                *imageDestOptions // Destination image options
+	retryOpts                *retry.RetryOptions
+	removeSignatures         bool                      // Do not copy signatures from the source image
+	signByFingerprint        string                    // Sign the image using a GPG key with the specified fingerprint
+	signBySigstorePrivateKey string                    // Sign the image using a sigstore private key
+	signPassphraseFile       string                    // Path pointing to a passphrase file when signing
+	format                   commonFlag.OptionalString // Force conversion of the image to a specified format
+	source                   string                    // Source repository name
+	destination              string                    // Destination registry name
+	scoped                   bool                      // When true, namespace copied images at destination using the source repository name
+	all                      bool                      // Copy all of the images if an image in the source is a list
+	dryRun                   bool                      // Don't actually copy anything, just output what it would have done
+	preserveDigests          bool                      // Preserve digests during sync
+	keepGoing                bool                      // Whether or not to abort the sync if there are any errors during syncing the images
 }
 
 // repoDescriptor contains information of a single repository used as a sync source.
@@ -105,6 +106,7 @@ See skopeo-sync(1) for details.
 	flags := cmd.Flags()
 	flags.BoolVar(&opts.removeSignatures, "remove-signatures", false, "Do not copy signatures from SOURCE images")
 	flags.StringVar(&opts.signByFingerprint, "sign-by", "", "Sign the image using a GPG key with the specified `FINGERPRINT`")
+	flags.StringVar(&opts.signBySigstorePrivateKey, "sign-by-sigstore-private-key", "", "Sign the image using a sigstore private key at `PATH`")
 	flags.StringVar(&opts.signPassphraseFile, "sign-passphrase-file", "", "File that contains a passphrase for the --sign-by key")
 	flags.VarP(commonFlag.NewOptionalStringValue(&opts.format), "format", "f", `MANIFEST TYPE (oci, v2s1, or v2s2) to use when syncing image(s) to a destination (default is manifest type of source, with fallbacks)`)
 	flags.StringVarP(&opts.source, "src", "s", "", "SOURCE transport type")
@@ -146,7 +148,7 @@ func newSourceConfig(yamlFile string) (sourceConfig, error) {
 	}
 	err = yaml.Unmarshal(source, &cfg)
 	if err != nil {
-		return cfg, errors.Wrapf(err, "Failed to unmarshal %q", yamlFile)
+		return cfg, fmt.Errorf("Failed to unmarshal %q: %w", yamlFile, err)
 	}
 	return cfg, nil
 }
@@ -158,7 +160,7 @@ func parseRepositoryReference(input string) (reference.Named, error) {
 		return nil, err
 	}
 	if !reference.IsNameOnly(ref) {
-		return nil, errors.Errorf("input names a reference, not a repository")
+		return nil, errors.New("input names a reference, not a repository")
 	}
 	return ref, nil
 }
@@ -176,24 +178,24 @@ func destinationReference(destination string, transport string) (types.ImageRefe
 	case directory.Transport.Name():
 		_, err := os.Stat(destination)
 		if err == nil {
-			return nil, errors.Errorf("Refusing to overwrite destination directory %q", destination)
+			return nil, fmt.Errorf("Refusing to overwrite destination directory %q", destination)
 		}
 		if !os.IsNotExist(err) {
-			return nil, errors.Wrap(err, "Destination directory could not be used")
+			return nil, fmt.Errorf("Destination directory could not be used: %w", err)
 		}
 		// the directory holding the image must be created here
 		if err = os.MkdirAll(destination, 0755); err != nil {
-			return nil, errors.Wrapf(err, "Error creating directory for image %s", destination)
+			return nil, fmt.Errorf("Error creating directory for image %s: %w", destination, err)
 		}
 		imageTransport = directory.Transport
 	default:
-		return nil, errors.Errorf("%q is not a valid destination transport", transport)
+		return nil, fmt.Errorf("%q is not a valid destination transport", transport)
 	}
 	logrus.Debugf("Destination for transport %q: %s", transport, destination)
 
 	destRef, err := imageTransport.ParseReference(destination)
 	if err != nil {
-		return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", imageTransport.Name(), destination)
+		return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", imageTransport.Name(), destination, err)
 	}
 
 	return destRef, nil
@@ -213,16 +215,16 @@ func getImageTags(ctx context.Context, sysCtx *types.SystemContext, repoRef refe
 		return nil, err // Should never happen for a reference with tag and no digest
 	}
 	tags, err := docker.GetRepositoryTags(ctx, sysCtx, dockerRef)
-
-	switch err := err.(type) {
-	case nil:
-		break
-	case docker.ErrUnauthorizedForCredentials:
-		// Some registries may decide to block the "list all tags" endpoint.
-		// Gracefully allow the sync to continue in this case.
-		logrus.Warnf("Registry disallows tag list retrieval: %s", err)
-	default:
-		return tags, errors.Wrapf(err, "Error determining repository tags for image %s", name)
+	if err != nil {
+		var unauthorizedForCredentials docker.ErrUnauthorizedForCredentials
+		if errors.As(err, &unauthorizedForCredentials) {
+			// Some registries may decide to block the "list all tags" endpoint.
+			// Gracefully allow the sync to continue in this case.
+			logrus.Warnf("Registry disallows tag list retrieval: %s", err)
+			tags = nil
+		} else {
+			return nil, fmt.Errorf("Error determining repository tags for image %s: %w", name, err)
+		}
 	}
 
 	return tags, nil
@@ -242,11 +244,11 @@ func imagesToCopyFromRepo(sys *types.SystemContext, repoRef reference.Named) ([]
 	for _, tag := range tags {
 		taggedRef, err := reference.WithTag(repoRef, tag)
 		if err != nil {
-			return nil, errors.Wrapf(err, "Error creating a reference for repository %s and tag %q", repoRef.Name(), tag)
+			return nil, fmt.Errorf("Error creating a reference for repository %s and tag %q: %w", repoRef.Name(), tag, err)
 		}
 		ref, err := docker.NewReference(taggedRef)
 		if err != nil {
-			return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %s", docker.Transport.Name(), taggedRef.String())
+			return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %s: %w", docker.Transport.Name(), taggedRef.String(), err)
 		}
 		sourceReferences = append(sourceReferences, ref)
 	}
@@ -267,7 +269,7 @@ func imagesToCopyFromDir(dirPath string) ([]types.ImageReference, error) {
 			dirname := filepath.Dir(path)
 			ref, err := directory.Transport.ParseReference(dirname)
 			if err != nil {
-				return errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", directory.Transport.Name(), dirname)
+				return fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", directory.Transport.Name(), dirname, err)
 			}
 			sourceReferences = append(sourceReferences, ref)
 			return filepath.SkipDir
@@ -277,7 +279,7 @@ func imagesToCopyFromDir(dirPath string) ([]types.ImageReference, error) {
 
 	if err != nil {
 		return sourceReferences,
-			errors.Wrapf(err, "Error walking the path %q", dirPath)
+			fmt.Errorf("Error walking the path %q: %w", dirPath, err)
 	}
 
 	return sourceReferences, nil
@@ -435,7 +437,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 		}
 		named, err := reference.ParseNormalizedNamed(source) // May be a repository or an image.
 		if err != nil {
-			return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", docker.Transport.Name(), source)
+			return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", docker.Transport.Name(), source, err)
 		}
 		imageTagged := !reference.IsNameOnly(named)
 		logrus.WithFields(logrus.Fields{
@@ -445,7 +447,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 		if imageTagged {
 			srcRef, err := docker.NewReference(named)
 			if err != nil {
-				return nil, errors.Wrapf(err, "Cannot obtain a valid image reference for transport %q and reference %q", docker.Transport.Name(), named.String())
+				return nil, fmt.Errorf("Cannot obtain a valid image reference for transport %q and reference %q: %w", docker.Transport.Name(), named.String(), err)
 			}
 			desc.ImageRefs = []types.ImageReference{srcRef}
 		} else {
@@ -454,7 +456,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 				return descriptors, err
 			}
 			if len(desc.ImageRefs) == 0 {
-				return descriptors, errors.Errorf("No images to sync found in %q", source)
+				return descriptors, fmt.Errorf("No images to sync found in %q", source)
 			}
 		}
 		descriptors = append(descriptors, desc)
@@ -465,7 +467,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 		}
 
 		if _, err := os.Stat(source); err != nil {
-			return descriptors, errors.Wrap(err, "Invalid source directory specified")
+			return descriptors, fmt.Errorf("Invalid source directory specified: %w", err)
 		}
 		desc.DirBasePath = source
 		var err error
@@ -474,7 +476,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 			return descriptors, err
 		}
 		if len(desc.ImageRefs) == 0 {
-			return descriptors, errors.Errorf("No images to sync found in %q", source)
+			return descriptors, fmt.Errorf("No images to sync found in %q", source)
 		}
 		descriptors = append(descriptors, desc)
 
@@ -493,7 +495,7 @@ func imagesToCopy(source string, transport string, sourceCtx *types.SystemContex
 
 			descs, err := imagesToCopyFromRegistry(registryName, registryConfig, *sourceCtx)
 			if err != nil {
-				return descriptors, errors.Wrapf(err, "Failed to retrieve list of images from registry %q", registryName)
+				return descriptors, fmt.Errorf("Failed to retrieve list of images from registry %q: %w", registryName, err)
 			}
 			descriptors = append(descriptors, descs...)
 		}
@@ -510,11 +512,11 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 
 	policyContext, err := opts.global.getPolicyContext()
 	if err != nil {
-		return errors.Wrapf(err, "Error loading trust policy")
+		return fmt.Errorf("Error loading trust policy: %w", err)
 	}
 	defer func() {
 		if err := policyContext.Destroy(); err != nil {
-			retErr = fmt.Errorf("(error tearing down policy context: %v): %w", err, retErr)
+			retErr = noteCloseFailure(retErr, "tearing down policy context", err)
 		}
 	}()
 
@@ -532,14 +534,14 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 		return errors.New("A source transport must be specified")
 	}
 	if !contains(opts.source, []string{docker.Transport.Name(), directory.Transport.Name(), "yaml"}) {
-		return errors.Errorf("%q is not a valid source transport", opts.source)
+		return fmt.Errorf("%q is not a valid source transport", opts.source)
 	}
 
 	if len(opts.destination) == 0 {
 		return errors.New("A destination transport must be specified")
 	}
 	if !contains(opts.destination, []string{docker.Transport.Name(), directory.Transport.Name()}) {
-		return errors.Errorf("%q is not a valid destination transport", opts.destination)
+		return fmt.Errorf("%q is not a valid destination transport", opts.destination)
 	}
 
 	if opts.source == opts.destination && opts.source == directory.Transport.Name() {
@@ -582,14 +584,32 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 		return err
 	}
 
-	passphrase, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
-	if err != nil {
-		return err
+	// c/image/copy.Image does allow creating both simple signing and sigstore signatures simultaneously,
+	// with independent passphrases, but that would make the CLI probably too confusing.
+	// For now, use the passphrase with either, but only one of them.
+	if opts.signPassphraseFile != "" && opts.signByFingerprint != "" && opts.signBySigstorePrivateKey != "" {
+		return fmt.Errorf("Only one of --sign-by and sign-by-sigstore-private-key can be used with sign-passphrase-file")
+	}
+	var passphrase string
+	if opts.signPassphraseFile != "" {
+		p, err := cli.ReadPassphraseFile(opts.signPassphraseFile)
+		if err != nil {
+			return err
+		}
+		passphrase = p
+	} else if opts.signBySigstorePrivateKey != "" {
+		p, err := promptForPassphrase(opts.signBySigstorePrivateKey, os.Stdin, os.Stdout)
+		if err != nil {
+			return err
+		}
+		passphrase = p
 	}
 	options := copy.Options{
 		RemoveSignatures:                      opts.removeSignatures,
 		SignBy:                                opts.signByFingerprint,
 		SignPassphrase:                        passphrase,
+		SignBySigstorePrivateKeyFile:          opts.signBySigstorePrivateKey,
+		SignSigstorePrivateKeyPassphrase:      []byte(passphrase),
 		ReportWriter:                          os.Stdout,
 		DestinationCtx:                        destinationCtx,
 		ImageListSelection:                    imageListSelection,
@@ -642,7 +662,7 @@ func (opts *syncOptions) run(args []string, stdout io.Writer) (retErr error) {
 					return err
 				}, opts.retryOpts); err != nil {
 					if !opts.keepGoing {
-						return errors.Wrapf(err, "Error copying ref %q", transports.ImageName(ref))
+						return fmt.Errorf("Error copying ref %q: %w", transports.ImageName(ref), err)
 					}
 					// log the error, keep a note that there was a failure and move on to the next
 					// image ref

cmd/skopeo/unshare_linux.go

@@ -1,9 +1,10 @@
 package main
 
 import (
+	"fmt"
+
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/storage/pkg/unshare"
-	"github.com/pkg/errors"
 	"github.com/syndtr/gocapability/capability"
 )
 
@@ -22,7 +23,7 @@ func maybeReexec() error {
 	// if we already have the capabilities we need.
 	capabilities, err := capability.NewPid(0)
 	if err != nil {
-		return errors.Wrapf(err, "error reading the current capabilities sets")
+		return fmt.Errorf("error reading the current capabilities sets: %w", err)
 	}
 	for _, cap := range neededCapabilities {
 		if !capabilities.Get(capability.EFFECTIVE, cap) {

cmd/skopeo/utils.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -14,10 +15,10 @@ import (
 	"github.com/containers/image/v5/transports/alltransports"
 	"github.com/containers/image/v5/types"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
+	"golang.org/x/term"
 )
 
 // errorShouldDisplayUsage is a subtype of error used by command handlers to indicate that cli.ShowSubcommandHelp should be called.
@@ -25,6 +26,27 @@ type errorShouldDisplayUsage struct {
 	error
 }
 
+// noteCloseFailure returns (possibly-nil) err modified to account for (non-nil) closeErr.
+// The error for closeErr is annotated with description (which is not a format string)
+// Typical usage:
+//
+// defer func() {
+//     if err := something.Close(); err != nil {
+//         returnedErr = noteCloseFailure(returnedErr, "closing something", err)
+//     }
+// }
+func noteCloseFailure(err error, description string, closeErr error) error {
+	// We don’t accept a Closer() and close it ourselves because signature.PolicyContext has .Destroy(), not .Close().
+	// This also makes it harder for a caller to do
+	//     defer noteCloseFailure(returnedErr, …)
+	// which doesn’t use the right value of returnedErr, and doesn’t update it.
+	if err == nil {
+		return fmt.Errorf("%s: %w", description, closeErr)
+	}
+	// In this case we prioritize the primary error for use with %w; closeErr is usually less relevant, or might be a consequence of the primary erorr.
+	return fmt.Errorf("%w (%s: %v)", err, description, closeErr)
+}
+
 // commandAction intermediates between the RunE interface and the real handler,
 // primarily to ensure that cobra.Command is not available to the handler, which in turn
 // makes sure that the cmd.Flags() etc. flag access functions are not used,
@@ -33,7 +55,8 @@ type errorShouldDisplayUsage struct {
 func commandAction(handler func(args []string, stdout io.Writer) error) func(cmd *cobra.Command, args []string) error {
 	return func(c *cobra.Command, args []string) error {
 		err := handler(args, c.OutOrStdout())
-		if _, ok := err.(errorShouldDisplayUsage); ok {
+		var shouldDisplayUsage errorShouldDisplayUsage
+		if errors.As(err, &shouldDisplayUsage) {
 			return c.Help()
 		}
 		return err
@@ -354,3 +377,19 @@ func adjustUsage(c *cobra.Command) {
 	c.SetUsageTemplate(usageTemplate)
 	c.DisableFlagsInUseLine = true
 }
+
+// promptForPassphrase interactively prompts for a passphrase related to privateKeyFile
+func promptForPassphrase(privateKeyFile string, stdin, stdout *os.File) (string, error) {
+	stdinFd := int(stdin.Fd())
+	if !term.IsTerminal(stdinFd) {
+		return "", fmt.Errorf("Cannot prompt for a passphrase for key %s, standard input is not a TTY", privateKeyFile)
+	}
+
+	fmt.Fprintf(stdout, "Passphrase for key %s: ", privateKeyFile)
+	passphrase, err := term.ReadPassword(stdinFd)
+	if err != nil {
+		return "", fmt.Errorf("Error reading password: %w", err)
+	}
+	fmt.Fprintf(stdout, "\n")
+	return string(passphrase), nil
+}

cmd/skopeo/utils_test.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"os"
+	"errors"
 	"testing"
 
 	"github.com/containers/image/v5/manifest"
@@ -13,6 +13,27 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func TestNoteCloseFailure(t *testing.T) {
+	const description = "description"
+
+	mainErr := errors.New("main")
+	closeErr := errors.New("closing")
+
+	// Main success, closing failed
+	res := noteCloseFailure(nil, description, closeErr)
+	require.NotNil(t, res)
+	assert.Contains(t, res.Error(), description)
+	assert.Contains(t, res.Error(), closeErr.Error())
+
+	// Both main and closing failed
+	res = noteCloseFailure(mainErr, description, closeErr)
+	require.NotNil(t, res)
+	assert.Contains(t, res.Error(), mainErr.Error())
+	assert.Contains(t, res.Error(), description)
+	assert.Contains(t, res.Error(), closeErr.Error())
+	assert.ErrorIs(t, res, mainErr)
+}
+
 // fakeGlobalOptions creates globalOptions and sets it according to flags.
 func fakeGlobalOptions(t *testing.T, flags []string) (*globalOptions, *cobra.Command) {
 	app, opts := createApp()
@@ -128,17 +149,9 @@ func TestImageDestOptionsNewSystemContext(t *testing.T) {
 		DockerRegistryUserAgent: defaultUserAgent,
 	}, res)
 
-	oldXRD, hasXRD := os.LookupEnv("REGISTRY_AUTH_FILE")
-	defer func() {
-		if hasXRD {
-			os.Setenv("REGISTRY_AUTH_FILE", oldXRD)
-		} else {
-			os.Unsetenv("REGISTRY_AUTH_FILE")
-		}
-	}()
 	authFile := "/tmp/auth.json"
 	// Make sure when REGISTRY_AUTH_FILE is set the auth file is used
-	os.Setenv("REGISTRY_AUTH_FILE", authFile)
+	t.Setenv("REGISTRY_AUTH_FILE", authFile)
 
 	// Explicitly set everything to default, except for when the default is “not present”
 	opts = fakeImageDestOptions(t, "dest-", true, []string{}, []string{

completions/bash/skopeo

@@ -1,343 +0,0 @@
-#! /bin/bash
-
-_complete_() {
-    local options_with_args=$1
-    local boolean_options="$2 -h --help"
-    local transports=$3
-
-    local option_with_args
-    for option_with_args in $options_with_args $transports
-    do
-        if [ "$option_with_args" == "$prev" ] || [ "$option_with_args" == "$cur" ]
-        then
-            return
-        fi
-    done
-
-    case "$cur" in
-        -*)
-            while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$boolean_options $options_with_args" -- "$cur")
-            ;;
-        *)
-            if [ -n "$transports" ]
-            then
-                compopt -o nospace
-                while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$transports" -- "$cur")
-            fi
-            ;;
-    esac
-}
-
-_skopeo_supported_transports() {
-    local subcommand=$1
-
-    skopeo "$subcommand" --help | grep "Supported transports" -A 1 | tail -n 1 | sed -e 's/,/:/g' -e 's/$/:/'
-}
-
-_skopeo_copy() {
-    local options_with_args="
-    --authfile
-    --src-authfile
-    --dest-authfile
-    --format -f
-    --multi-arch
-    --sign-by
-    --sign-passphrase-file
-    --sign-identity
-    --src-creds --screds
-    --src-cert-dir
-    --src-tls-verify
-    --dest-creds --dcreds
-    --dest-cert-dir
-    --dest-tls-verify
-    --src-daemon-host
-    --dest-daemon-host
-    --src-registry-token
-    --dest-registry-token
-    --src-username
-    --src-password
-    --dest-username
-    --dest-password
-    "
-
-    local boolean_options="
-    --all
-    --dest-compress
-    --dest-decompress
-    --remove-signatures
-    --src-no-creds
-    --dest-no-creds
-    --dest-oci-accept-uncompressed-layers
-    --dest-precompute-digests
-    --preserve-digests
-    "
-
-    local transports
-    transports="
-    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
-    "
-
-    _complete_ "$options_with_args" "$boolean_options" "$transports"
-}
-
-_skopeo_sync() {
-    local options_with_args="
-    --authfile
-    --dest
-    --dest-authfile
-    --dest-cert-
-    --dest-creds
-    --dest-registry-token string
-    --format
-    --retry-times
-    --sign-by
-    --sign-passphrase-file
-    --src
-    --src-authfile
-    --src-cert-dir
-    --src-creds
-    --src-registry-token
-    --src-username
-    --src-password
-    --dest-username
-    --dest-password
-    "
-
-    local boolean_options="
-    --all
-    --dest-no-creds
-    --dest-tls-verify
-    --dry-run
-    --remove-signatures
-    --scoped
-    --src-no-creds
-    --src-tls-verify
-    --keep-going
-    --preserve-digests
-    "
-
-    local transports
-    transports="
-    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
-    "
-
-    _complete_ "$options_with_args" "$boolean_options" "$transports"
-}
-
-_skopeo_inspect() {
-     local options_with_args="
-     --authfile
-     --creds
-     --cert-dir
-     --format
-     --retry-times
-     --registry-token
-    --username
-    --password
-     "
-     local boolean_options="
-     --config
-     --raw
-     --tls-verify
-     --no-creds
-     --no-tags -n
-    "
-
-    local transports
-    transports="
-    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
-    "
-
-    _complete_ "$options_with_args" "$boolean_options" "$transports"
-}
-
-_skopeo_standalone_sign() {
-     local options_with_args="
-       -o --output
-       --passphrase-file
-     "
-     local boolean_options="
-     "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_standalone_verify() {
-     local options_with_args="
-     "
-     local boolean_options="
-     "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_manifest_digest() {
-     local options_with_args="
-     "
-     local boolean_options="
-     "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_delete() {
-     local options_with_args="
-     --authfile
-     --creds
-     --cert-dir
-     --registry-token
-    --username
-    --password
-     "
-     local boolean_options="
-     --tls-verify
-     --no-creds
-     "
-
-    local transports
-    transports="
-    $(_skopeo_supported_transports "${FUNCNAME//"_skopeo_"/}")
-    "
-
-    _complete_ "$options_with_args" "$boolean_options" "$transports"
-}
-
-_skopeo_layers() {
-     local options_with_args="
-       --authfile
-       --creds
-       --cert-dir
-       --registry-token
-      --username
-      --password
-     "
-     local boolean_options="
-       --tls-verify
-       --no-creds
-     "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_list_repository_tags() {
-     local options_with_args="
-     --authfile
-     --creds
-     --cert-dir
-     --registry-token
-    --username
-    --password
-     "
-
-     local boolean_options="
-     --tls-verify
-     --no-creds
-     "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_login() {
-    local options_with_args="
-    --authfile
-    --cert-dir
-    --password -p
-    --username -u
-    "
-
-    local boolean_options="
-    --get-login
-    --tls-verify
-    --password-stdin
-    "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_logout() {
-    local options_with_args="
-    --authfile
-    "
-
-    local boolean_options="
-    --all -a
-    "
-    _complete_ "$options_with_args" "$boolean_options"
-}
-
-_skopeo_skopeo() {
-     # XXX: Changes here need to be reflected in the manually expanded
-     # string in the `case` statement below as well.
-     local options_with_args="
-       --policy
-       --registries.d
-       --override-arch
-       --override-os
-       --override-variant
-       --command-timeout
-       --tmpdir
-     "
-     local boolean_options="
-       --insecure-policy
-       --debug
-       --version -v
-       --help -h
-     "
-
-     local commands=(
-       copy
-       delete
-       inspect
-       list-tags
-       login
-       logout
-       manifest-digest
-       standalone-sign
-       standalone-verify
-       sync
-       help
-       h
-     )
-
-     case "$prev" in
-         # XXX: Changes here need to be reflected in $options_with_args as well.
-         --policy|--registries.d|--override-arch|--override-os|--override-variant|--command-timeout)
-             return
-             ;;
-     esac
-
-     case "$cur" in
-         -*)
-             while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "$boolean_options $options_with_args" -- "$cur")
-             ;;
-         *)
-             while IFS='' read -r line; do COMPREPLY+=("$line"); done < <(compgen -W "${commands[*]} help" -- "$cur")
-             ;;
-     esac
-}
-
-_cli_bash_autocomplete() {
-     local cur
-
-     COMPREPLY=()
-     cur="${COMP_WORDS[COMP_CWORD]}"
-     COMPREPLY=()
-     local cur prev words cword
-
-     _get_comp_words_by_ref -n : cur prev words cword
-
-     local command="skopeo" cpos=0
-     local counter=1
-     while [ $counter -lt "$cword" ]; do
-         case "${words[$counter]}" in
-             skopeo|copy|sync|inspect|delete|manifest-digest|standalone-sign|standalone-verify|help|h|list-repository-tags)
-                 command="${words[$counter]//-/_}"
-                 cpos=$counter
-                 (( cpos++ ))
-                 break
-                 ;;
-         esac
-         (( counter++ ))
-     done
-
-     local completions_func=_skopeo_${command}
-     declare -F "$completions_func" >/dev/null && $completions_func
-
-     return 0
-}
-
- complete -F _cli_bash_autocomplete skopeo

contrib/skopeoimage/README.md

@@ -6,7 +6,7 @@
 
 ## Overview
 
-This directory contains the Dockerfiles necessary to create the skopeoimage container
+This directory contains the Containerfiles necessary to create the skopeoimage container
 images that are housed on quay.io under the skopeo account.  All repositories where
 the images live are public and can be pulled without credentials.  These container images are secured and the
 resulting containers can run safely with privileges within the container.
@@ -19,21 +19,22 @@ default to `/`.
 The container images are:
 
   * `quay.io/containers/skopeo:v<version>` and `quay.io/skopeo/stable:v<version>` -
-    These images are built when a new Skopeo version becomes available in
-    Fedora.  These images are intended to be unchanging and stable, they will
-    never be updated by automation once they've been pushed.  For build details,
-    please [see the configuration file](stable/Dockerfile).
+    These images are built daily.  These images are intended contain an unchanging
+    and stable version of skopeo.  For the most recent `<version>` tags (`vX`,
+    `vX.Y`, and `vX.Y.Z`) the image contents will be updated daily to incorporate
+    (especially) security updates.  For build details, please[see the configuration
+    file](stable/Containerfile).
   * `quay.io/containers/skopeo:latest` and `quay.io/skopeo/stable:latest` -
-    Built daily using the same Dockerfile as above.  The skopeo version
-    will remain the "latest" available in Fedora, however the image
+    Built daily using the same Containerfile as above.  The skopeo version
+    will remain the "latest" available in Fedora, however the other image
     contents may vary compared to the version-tagged images.
   * `quay.io/skopeo/testing:latest` - This image is built daily, using the
     latest version of Skopeo that was in the Fedora `updates-testing` repository.
-    The image is Built with [the testing Dockerfile](testing/Dockerfile).
+    The image is Built with [the testing Containerfile](testing/Containerfile).
   * `quay.io/skopeo/upstream:latest` - This image is built daily using the latest
     code found in this GitHub repository.  Due to the image changing frequently,
     it's not guaranteed to be stable or even executable.  The image is built with
-    [the upstream Dockerfile](upstream/Dockerfile).
+    [the upstream Containerfile](upstream/Containerfile).
 
 
 ## Sample Usage

contrib/skopeoimage/stable/Containerfile

@@ -0,0 +1,47 @@
+# stable/Containerfile
+#
+# Build a Skopeo container image from the latest
+# stable version of Skopeo on the Fedoras Updates System.
+# https://bodhi.fedoraproject.org/updates/?search=skopeo
+# This image can be used to create a secured container
+# that runs safely with privileges within the container.
+#
+FROM registry.fedoraproject.org/fedora:latest
+
+# Don't include container-selinux and remove
+# directories used by dnf that are just taking
+# up space.
+# TODO: rpm --setcaps... needed due to Fedora (base) image builds
+#       being (maybe still?) affected by
+#       https://bugzilla.redhat.com/show_bug.cgi?id=1995337#c3
+RUN dnf -y update && \
+    rpm --setcaps shadow-utils 2>/dev/null && \
+    dnf -y install skopeo fuse-overlayfs \
+        --exclude container-selinux && \
+    dnf clean all && \
+    rm -rf /var/cache /var/log/dnf* /var/log/yum.*
+
+RUN useradd skopeo && \
+    echo skopeo:100000:65536 > /etc/subuid && \
+    echo skopeo:100000:65536 > /etc/subgid
+
+# Copy & modify the defaults to provide reference if runtime changes needed.
+# Changes here are required for running with fuse-overlay storage inside container.
+RUN sed -e 's|^#mount_program|mount_program|g' \
+        -e '/additionalimage.*/a "/var/lib/shared",' \
+        -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' \
+        /usr/share/containers/storage.conf \
+        > /etc/containers/storage.conf
+
+# Setup the ability to use additional stores
+# with this container image.
+RUN mkdir -p /var/lib/shared/overlay-images \
+             /var/lib/shared/overlay-layers && \
+    touch /var/lib/shared/overlay-images/images.lock && \
+    touch /var/lib/shared/overlay-layers/layers.lock
+
+# Point to the Authorization file
+ENV REGISTRY_AUTH_FILE=/tmp/auth.json
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/stable/Dockerfile

@@ -1,33 +0,0 @@
-# stable/Dockerfile
-#
-# Build a Skopeo container image from the latest
-# stable version of Skopeo on the Fedoras Updates System.
-# https://bodhi.fedoraproject.org/updates/?search=skopeo
-# This image can be used to create a secured container
-# that runs safely with privileges within the container.
-#
-FROM registry.fedoraproject.org/fedora:latest
-
-# Don't include container-selinux and remove
-# directories used by yum that are just taking
-# up space.  Also reinstall shadow-utils as without
-# doing so, the setuid/setgid bits on newuidmap
-# and newgidmap are lost in the Fedora images. 
-RUN useradd skopeo; yum -y update; yum -y reinstall shadow-utils; yum -y install skopeo fuse-overlayfs --exclude container-selinux; yum -y clean all; rm -rf /var/cache/dnf/* /var/log/dnf* /var/log/yum*
-
-# Adjust storage.conf to enable Fuse storage.
-RUN sed -i -e 's|^#mount_program|mount_program|g' -e '/additionalimage.*/a "/var/lib/shared",' -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' /etc/containers/storage.conf
-
-# Setup the ability to use additional stores
-# with this container image.
-RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers; touch /var/lib/shared/overlay-images/images.lock; touch /var/lib/shared/overlay-layers/layers.lock
-
-# Setup skopeo's uid/guid entries
-RUN echo skopeo:100000:65536 > /etc/subuid
-RUN echo skopeo:100000:65536 > /etc/subgid
-
-# Point to the Authorization file
-ENV REGISTRY_AUTH_FILE=/tmp/auth.json
-
-# Set the entrypoint
-ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/testing/Containerfile

@@ -0,0 +1,49 @@
+# testing/Containerfile
+#
+# Build a Skopeo container image from the latest
+# version of Skopeo that is in updates-testing
+# on the Fedoras Updates System.
+# https://bodhi.fedoraproject.org/updates/?search=skopeo
+# This image can be used to create a secured container
+# that runs safely with privileges within the container.
+#
+FROM registry.fedoraproject.org/fedora:latest
+
+# Don't include container-selinux and remove
+# directories used by dnf that are just taking
+# up space.
+# TODO: rpm --setcaps... needed due to Fedora (base) image builds
+#       being (maybe still?) affected by
+#       https://bugzilla.redhat.com/show_bug.cgi?id=1995337#c3
+RUN dnf -y update && \
+    rpm --setcaps shadow-utils 2>/dev/null && \
+    dnf -y install skopeo fuse-overlayfs \
+        --exclude container-selinux \
+        --enablerepo updates-testing && \
+    dnf clean all && \
+    rm -rf /var/cache /var/log/dnf* /var/log/yum.*
+
+RUN useradd skopeo && \
+    echo skopeo:100000:65536 > /etc/subuid && \
+    echo skopeo:100000:65536 > /etc/subgid
+
+# Copy & modify the defaults to provide reference if runtime changes needed.
+# Changes here are required for running with fuse-overlay storage inside container.
+RUN sed -e 's|^#mount_program|mount_program|g' \
+        -e '/additionalimage.*/a "/var/lib/shared",' \
+        -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' \
+        /usr/share/containers/storage.conf \
+        > /etc/containers/storage.conf
+
+# Setup the ability to use additional stores
+# with this container image.
+RUN mkdir -p /var/lib/shared/overlay-images \
+             /var/lib/shared/overlay-layers && \
+    touch /var/lib/shared/overlay-images/images.lock && \
+    touch /var/lib/shared/overlay-layers/layers.lock
+
+# Point to the Authorization file
+ENV REGISTRY_AUTH_FILE=/tmp/auth.json
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/testing/Dockerfile

@@ -1,34 +0,0 @@
-# testing/Dockerfile
-#
-# Build a Skopeo container image from the latest
-# version of Skopeo that is in updates-testing
-# on the Fedoras Updates System.
-# https://bodhi.fedoraproject.org/updates/?search=skopeo
-# This image can be used to create a secured container
-# that runs safely with privileges within the container.
-#
-FROM registry.fedoraproject.org/fedora:latest
-
-# Don't include container-selinux and remove
-# directories used by yum that are just taking
-# up space.  Also reinstall shadow-utils as without
-# doing so, the setuid/setgid bits on newuidmap
-# and newgidmap are lost in the Fedora images. 
-RUN useradd skopeo; yum -y update; yum -y reinstall shadow-utils; yum -y install skopeo fuse-overlayfs --enablerepo updates-testing --exclude container-selinux; yum -y clean all; rm -rf /var/cache/dnf/* /var/log/dnf* /var/log/yum*
-
-# Adjust storage.conf to enable Fuse storage.
-RUN sed -i -e 's|^#mount_program|mount_program|g' -e '/additionalimage.*/a "/var/lib/shared",' -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' /etc/containers/storage.conf
-
-# Setup the ability to use additional stores
-# with this container image.
-RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers; touch /var/lib/shared/overlay-images/images.lock; touch /var/lib/shared/overlay-layers/layers.lock
-
-# Setup skopeo's uid/guid entries
-RUN echo skopeo:100000:65536 > /etc/subuid
-RUN echo skopeo:100000:65536 > /etc/subgid
-
-# Point to the Authorization file
-ENV REGISTRY_AUTH_FILE=/tmp/auth.json
-
-# Set the entrypoint
-ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/upstream/Containerfile

@@ -0,0 +1,66 @@
+# upstream/Containerfile
+#
+# Build a Skopeo container image from the latest
+# upstream version of Skopeo on GitHub.
+# https://github.com/containers/skopeo
+# This image can be used to create a secured container
+# that runs safely with privileges within the container.
+#
+FROM registry.fedoraproject.org/fedora:latest
+
+# Don't include container-selinux and remove
+# directories used by dnf that are just taking
+# up space.
+# TODO: rpm --setcaps... needed due to Fedora (base) image builds
+#       being (maybe still?) affected by
+#       https://bugzilla.redhat.com/show_bug.cgi?id=1995337#c3
+RUN dnf -y update && \
+    rpm --setcaps shadow-utils 2>/dev/null && \
+    dnf -y --enablerepo updates-testing --exclude container-selinux install \
+        make \
+        golang \
+        git \
+        go-md2man \
+        fuse-overlayfs \
+        fuse3 \
+        containers-common \
+        gpgme-devel \
+        libassuan-devel \
+        btrfs-progs-devel \
+        device-mapper-devel && \
+    mkdir /root/skopeo && \
+    git clone https://github.com/containers/skopeo \
+        /root/skopeo/src/github.com/containers/skopeo && \
+    export GOPATH=/root/skopeo && \
+    cd /root/skopeo/src/github.com/containers/skopeo && \
+    make bin/skopeo && \
+    make PREFIX=/usr install && \
+    rm -rf /root/skopeo/* && \
+    dnf -y remove git golang go-md2man make && \
+    dnf clean all && \
+    rm -rf /var/cache /var/log/dnf* /var/log/yum.*
+
+RUN useradd skopeo && \
+    echo skopeo:100000:65536 > /etc/subuid && \
+    echo skopeo:100000:65536 > /etc/subgid
+
+# Copy & modify the defaults to provide reference if runtime changes needed.
+# Changes here are required for running with fuse-overlay storage inside container.
+RUN sed -e 's|^#mount_program|mount_program|g' \
+        -e '/additionalimage.*/a "/var/lib/shared",' \
+        -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' \
+        /usr/share/containers/storage.conf \
+        > /etc/containers/storage.conf
+
+# Setup the ability to use additional stores
+# with this container image.
+RUN mkdir -p /var/lib/shared/overlay-images \
+             /var/lib/shared/overlay-layers && \
+    touch /var/lib/shared/overlay-images/images.lock && \
+    touch /var/lib/shared/overlay-layers/layers.lock
+
+# Point to the Authorization file
+ENV REGISTRY_AUTH_FILE=/tmp/auth.json
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/bin/skopeo"]

contrib/skopeoimage/upstream/Dockerfile

@@ -1,54 +0,0 @@
-# upstream/Dockerfile
-#
-# Build a Skopeo container image from the latest
-# upstream version of Skopeo on GitHub.
-# https://github.com/containers/skopeo
-# This image can be used to create a secured container
-# that runs safely with privileges within the container.
-#
-FROM registry.fedoraproject.org/fedora:latest
-
-# Don't include container-selinux and remove
-# directories used by yum that are just taking
-# up space.  Also reinstall shadow-utils as without
-# doing so, the setuid/setgid bits on newuidmap
-# and newgidmap are lost in the Fedora images. 
-RUN useradd skopeo; yum -y update; yum -y reinstall shadow-utils; \
-yum -y install make \
-golang \
-git \
-go-md2man \
-fuse-overlayfs \
-fuse3 \
-containers-common \
-gpgme-devel \
-libassuan-devel \
-btrfs-progs-devel \
-device-mapper-devel --enablerepo updates-testing --exclude container-selinux; \
-mkdir /root/skopeo; \
-git clone https://github.com/containers/skopeo /root/skopeo/src/github.com/containers/skopeo; \
-export GOPATH=/root/skopeo; \
-cd /root/skopeo/src/github.com/containers/skopeo; \
-make bin/skopeo;\
-make PREFIX=/usr install;\
-rm -rf /root/skopeo/*; \
-yum -y remove git golang go-md2man make; \
-yum -y clean all; yum -y clean all; rm -rf /var/cache/dnf/* /var/log/dnf* /var/log/yum*
-
-
-# Adjust storage.conf to enable Fuse storage.
-RUN sed -i -e 's|^#mount_program|mount_program|g' -e '/additionalimage.*/a "/var/lib/shared",' -e 's|^mountopt[[:space:]]*=.*$|mountopt = "nodev,fsync=0"|g' /etc/containers/storage.conf
-
-# Setup the ability to use additional stores
-# with this container image.
-RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers; touch /var/lib/shared/overlay-images/images.lock; touch /var/lib/shared/overlay-layers/layers.lock
-
-# Setup skopeo's uid/guid entries
-RUN echo skopeo:100000:65536 > /etc/subuid
-RUN echo skopeo:100000:65536 > /etc/subgid
-
-# Point to the Authorization file
-ENV REGISTRY_AUTH_FILE=/tmp/auth.json
-
-# Set the entrypoint
-ENTRYPOINT ["/usr/bin/skopeo"]

default.yaml

@@ -1,19 +1,19 @@
 # This is a default registries.d configuration file.  You may
 # add to this file or create additional files in registries.d/.
 #
-# sigstore: indicates a location that is read and write
-# sigstore-staging: indicates a location that is only for write
+# lookaside: indicates a location that is read and write
+# lookaside-staging: indicates a location that is only for write
 #
-# sigstore and sigstore-staging take a value of the following:
-#   sigstore:  {schema}://location
+# lookaside and lookaside-staging take a value of the following:
+#   lookaside:  {schema}://location
 #
 # For reading signatures, schema may be http, https, or file.
 # For writing signatures, schema may only be file.
 
 # This is the default signature write location for docker registries.
 default-docker:
-#  sigstore: file:///var/lib/containers/sigstore
-  sigstore-staging: file:///var/lib/containers/sigstore
+#  lookaside: file:///var/lib/containers/sigstore
+  lookaside-staging: file:///var/lib/containers/sigstore
 
 # The 'docker' indicator here is the start of the configuration
 # for docker registries.
@@ -21,6 +21,6 @@ default-docker:
 # docker:
 #
 #   privateregistry.com:
-#    sigstore: http://privateregistry.com/sigstore/
-#    sigstore-staging: /mnt/nfs/privateregistry/sigstore
+#    lookaside: http://privateregistry.com/sigstore/
+#    lookaside-staging: /mnt/nfs/privateregistry/sigstore
 

docs/skopeo-copy.1.md

@@ -91,11 +91,15 @@ Do not copy signatures, if any, from _source-image_. Necessary when copying a si
 
 **--sign-by** _key-id_
 
-Add a signature using that key ID for an image name corresponding to _destination-image_
+Add a “simple signing” signature using that key ID for an image name corresponding to _destination-image_
+
+**--sign-by-sigstore-private-key** _path_
+
+Add a sigstore signature using a private key at _path_ for an image name corresponding to _destination-image_
 
 **--sign-passphrase-file** _path_
 
-The passphare to use when signing with the key ID from `--sign-by`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
+The passphare to use when signing with `--sign-by` or `--sign-by-sigstore-private-key`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
 
 **--sign-identity** _reference_
 

docs/skopeo-sync.1.md

@@ -70,9 +70,17 @@ Print usage statement.
 
 **--remove-signatures** Do not copy signatures, if any, from _source-image_. This is necessary when copying a signed image to a destination which does not support signatures.
 
-**--sign-by**=_key-id_ Add a signature using that key ID for an image name corresponding to _destination-image_.
+**--sign-by** _key-id_
 
-**--sign-passphrase-file**=_path_ The passphare to use when signing with the key ID from `--sign-by`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
+Add a “simple signing” signature using that key ID for an image name corresponding to _destination-image_
+
+**--sign-by-sigstore-private-key** _path_
+
+Add a sigstore signature using a private key at _path_ for an image name corresponding to _destination-image_
+
+**--sign-passphrase-file** _path_
+
+The passphare to use when signing with `--sign-by` or `--sign-by-sigstore-private-key`. Only the first line will be read. A passphrase stored in a file is of questionable security if other users can read this file. Do not use this option if at all avoidable.
 
 **--src-creds** _username[:password]_ for accessing the source registry.
 

docs/skopeo.svg

@@ -1,546 +1,74 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:xlink="http://www.w3.org/1999/xlink"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="480.61456"
-   height="472.66098"
-   viewBox="0 0 127.1626 125.05822"
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-       style="fill:url(#linearGradient84455);fill-opacity:1;stroke:none;stroke-width:0.79374999;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:5.99999952"
-       d="m 234.17188,269.53842 2.08203,1.20312 9.63086,-16.67773 -2.08399,-1.20313 z"
-       id="rect84443"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#ffffff;fill-rule:evenodd;stroke:#f8ead2;stroke-width:0.52916664;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-       d="m 215.55025,240.82707 22.49734,12.98884"
-       id="path84521"
-       inkscape:connector-curvature="0" />
   </g>
 </svg>

go.mod

@@ -1,24 +1,107 @@
 module github.com/containers/skopeo
 
-go 1.16
+go 1.17
 
 require (
 	github.com/containers/common v0.48.0
-	github.com/containers/image/v5 v5.21.1
-	github.com/containers/ocicrypt v1.1.4
-	github.com/containers/storage v1.40.2
-	github.com/docker/docker v20.10.14+incompatible
-	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 // indirect
+	github.com/containers/image/v5 v5.21.2-0.20220712113758-29aec5f7bbbf
+	github.com/containers/ocicrypt v1.1.5
+	github.com/containers/storage v1.41.0
+	github.com/docker/docker v20.10.17+incompatible
 	github.com/opencontainers/go-digest v1.0.0
-	github.com/opencontainers/image-spec v1.0.3-0.20211202193544-a5463b7f9c84
+	github.com/opencontainers/image-spec v1.0.3-0.20220114050600-8b9d41f48198
 	github.com/opencontainers/image-tools v1.0.0-rc3
-	github.com/pkg/errors v0.9.1
-	github.com/russross/blackfriday v2.0.0+incompatible // indirect
 	github.com/sirupsen/logrus v1.8.1
-	github.com/spf13/cobra v1.4.0
+	github.com/spf13/cobra v1.5.0
 	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.7.1
+	github.com/stretchr/testify v1.8.0
 	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
+	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
 	gopkg.in/yaml.v2 v2.4.0
 )
+
+require (
+	github.com/BurntSushi/toml v1.1.0 // indirect
+	github.com/Microsoft/go-winio v0.5.2 // indirect
+	github.com/Microsoft/hcsshim v0.9.2 // indirect
+	github.com/VividCortex/ewma v1.2.0 // indirect
+	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/containerd/cgroups v1.0.3 // indirect
+	github.com/containerd/stargz-snapshotter/estargz v0.11.4 // indirect
+	github.com/containers/libtrust v0.0.0-20200511145503-9c3a6c22cd9a // indirect
+	github.com/cyphar/filepath-securejoin v0.2.3 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/docker/distribution v2.8.1+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.6.4 // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-metrics v0.0.1 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
+	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 // indirect
+	github.com/ghodss/yaml v1.0.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/go-containerregistry v0.10.0 // indirect
+	github.com/google/go-intervals v0.0.2 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/imdario/mergo v0.3.13 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.15.7 // indirect
+	github.com/klauspost/pgzip v1.2.5 // indirect
+	github.com/kr/pretty v0.2.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/letsencrypt/boulder v0.0.0-20220331220046-b23ab962616e // indirect
+	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/mattn/go-shellwords v1.0.12 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/miekg/pkcs11 v1.1.1 // indirect
+	github.com/mistifyio/go-zfs v2.1.2-0.20190413222219-f784269be439+incompatible // indirect
+	github.com/moby/sys/mountinfo v0.6.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/opencontainers/runc v1.1.2 // indirect
+	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417 // indirect
+	github.com/opencontainers/selinux v1.10.1 // indirect
+	github.com/ostreedev/ostree-go v0.0.0-20210805093236-719684c64e4f // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/proglottis/gpgme v0.1.3 // indirect
+	github.com/prometheus/client_golang v1.12.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/russross/blackfriday v2.0.0+incompatible // indirect
+	github.com/sigstore/sigstore v1.3.1-0.20220629021053-b95fc0d626c1 // indirect
+	github.com/stefanberger/go-pkcs11uri v0.0.0-20201008174630-78d3cae3a980 // indirect
+	github.com/sylabs/sif/v2 v2.7.1 // indirect
+	github.com/tchap/go-patricia v2.3.0+incompatible // indirect
+	github.com/theupdateframework/go-tuf v0.3.0 // indirect
+	github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 // indirect
+	github.com/ulikunitz/xz v0.5.10 // indirect
+	github.com/vbatts/tar-split v0.11.2 // indirect
+	github.com/vbauerster/mpb/v7 v7.4.2 // indirect
+	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
+	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
+	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
+	go.etcd.io/bbolt v1.3.6 // indirect
+	go.mozilla.org/pkcs7 v0.0.0-20200128120323-432b2356ecb1 // indirect
+	go.opencensus.io v0.23.0 // indirect
+	golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838 // indirect
+	golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e // indirect
+	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
+	golang.org/x/sys v0.0.0-20220624220833-87e55d714810 // indirect
+	golang.org/x/text v0.3.7 // indirect
+	google.golang.org/genproto v0.0.0-20220624142145-8cd45d7dbd1f // indirect
+	google.golang.org/grpc v1.47.0 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
+	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

hack/btrfs_installed_tag.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 cc -E - > /dev/null 2> /dev/null << EOF
 #include <btrfs/ioctl.h>
 EOF

hack/btrfs_tag.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 cc -E - > /dev/null 2> /dev/null << EOF
 #include <btrfs/version.h>
 EOF

hack/libdm_tag.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 tmpdir="$PWD/tmp.$RANDOM"
 mkdir -p "$tmpdir"
 trap 'rm -fr "$tmpdir"' EXIT

hack/tree_status.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 STATUS=$(git status --porcelain)

install.md

@@ -212,6 +212,13 @@ Building in a container is simpler, but more restrictive:
 $ make binary
 ```
 
+### Shell completion scripts
+
+Skopeo has shell completion scripts for bash, zsh, fish and powershell. They are installed as part of `make install`.
+You may have to restart your shell in order for them to take effect.
+
+For instructions to manually generate and load the scripts please see `skopeo completion --help`.
+
 ### Installation
 
 Finally, after the binary and documentation is built:

integration/copy_test.go

@@ -845,8 +845,8 @@ func findRegularFiles(c *check.C, root string) []string {
 	return result
 }
 
-// --sign-by and policy use for docker: with sigstore
-func (s *CopySuite) TestCopyDockerSigstore(c *check.C) {
+// --sign-by and policy use for docker: with lookaside
+func (s *CopySuite) TestCopyDockerLookaside(c *check.C) {
 	mech, _, err := signature.NewEphemeralGPGSigningMechanism([]byte{})
 	c.Assert(err, check.IsNil)
 	defer mech.Close()
@@ -861,14 +861,14 @@ func (s *CopySuite) TestCopyDockerSigstore(c *check.C) {
 	err = os.Mkdir(copyDest, 0755)
 	c.Assert(err, check.IsNil)
 	dirDest := "dir:" + copyDest
-	plainSigstore := filepath.Join(tmpDir, "sigstore")
-	splitSigstoreStaging := filepath.Join(tmpDir, "sigstore-staging")
+	plainLookaside := filepath.Join(tmpDir, "lookaside")
+	splitLookasideStaging := filepath.Join(tmpDir, "lookaside-staging")
 
-	splitSigstoreReadServerHandler := http.NotFoundHandler()
-	splitSigstoreReadServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		splitSigstoreReadServerHandler.ServeHTTP(w, r)
+	splitLookasideReadServerHandler := http.NotFoundHandler()
+	splitLookasideReadServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		splitLookasideReadServerHandler.ServeHTTP(w, r)
 	}))
-	defer splitSigstoreReadServer.Close()
+	defer splitLookasideReadServer.Close()
 
 	policy := fileFromFixture(c, "fixtures/policy.json", map[string]string{"@keydir@": s.gpgHome})
 	defer os.Remove(policy)
@@ -876,20 +876,20 @@ func (s *CopySuite) TestCopyDockerSigstore(c *check.C) {
 	err = os.Mkdir(registriesDir, 0755)
 	c.Assert(err, check.IsNil)
 	registriesFile := fileFromFixture(c, "fixtures/registries.yaml",
-		map[string]string{"@sigstore@": plainSigstore, "@split-staging@": splitSigstoreStaging, "@split-read@": splitSigstoreReadServer.URL})
+		map[string]string{"@lookaside@": plainLookaside, "@split-staging@": splitLookasideStaging, "@split-read@": splitLookasideReadServer.URL})
 	err = os.Symlink(registriesFile, filepath.Join(registriesDir, "registries.yaml"))
 	c.Assert(err, check.IsNil)
 
-	// Get an image to work with.  Also verifies that we can use Docker repositories with no sigstore configured.
+	// Get an image to work with.  Also verifies that we can use Docker repositories with no lookaside configured.
 	assertSkopeoSucceeds(c, "", "--tls-verify=false", "--registries.d", registriesDir, "copy", testFQIN, ourRegistry+"original/busybox")
 	// Pulling an unsigned image fails.
 	assertSkopeoFails(c, ".*Source image rejected: A signature was required, but no signature exists.*",
 		"--tls-verify=false", "--policy", policy, "--registries.d", registriesDir, "copy", ourRegistry+"original/busybox", dirDest)
 
-	// Signing with sigstore defined succeeds,
+	// Signing with lookaside defined succeeds,
 	assertSkopeoSucceeds(c, "", "--tls-verify=false", "--registries.d", registriesDir, "copy", "--sign-by", "personal@example.com", ourRegistry+"original/busybox", ourRegistry+"signed/busybox")
 	// a signature file has been created,
-	foundFiles := findRegularFiles(c, plainSigstore)
+	foundFiles := findRegularFiles(c, plainLookaside)
 	c.Assert(foundFiles, check.HasLen, 1)
 	// and pulling a signed image succeeds.
 	assertSkopeoSucceeds(c, "", "--tls-verify=false", "--policy", policy, "--registries.d", registriesDir, "copy", ourRegistry+"signed/busybox", dirDest)
@@ -897,19 +897,19 @@ func (s *CopySuite) TestCopyDockerSigstore(c *check.C) {
 	// Deleting the image succeeds,
 	assertSkopeoSucceeds(c, "", "--tls-verify=false", "--registries.d", registriesDir, "delete", ourRegistry+"signed/busybox")
 	// and the signature file has been deleted (but we leave the directories around).
-	foundFiles = findRegularFiles(c, plainSigstore)
+	foundFiles = findRegularFiles(c, plainLookaside)
 	c.Assert(foundFiles, check.HasLen, 0)
 
-	// Signing with a read/write sigstore split succeeds,
+	// Signing with a read/write lookaside split succeeds,
 	assertSkopeoSucceeds(c, "", "--tls-verify=false", "--registries.d", registriesDir, "copy", "--sign-by", "personal@example.com", ourRegistry+"original/busybox", ourRegistry+"public/busybox")
 	// and a signature file has been created.
-	foundFiles = findRegularFiles(c, splitSigstoreStaging)
+	foundFiles = findRegularFiles(c, splitLookasideStaging)
 	c.Assert(foundFiles, check.HasLen, 1)
-	// Pulling the image fails because the read sigstore URL has not been populated:
+	// Pulling the image fails because the read lookaside URL has not been populated:
 	assertSkopeoFails(c, ".*Source image rejected: A signature was required, but no signature exists.*",
 		"--tls-verify=false", "--policy", policy, "--registries.d", registriesDir, "copy", ourRegistry+"public/busybox", dirDest)
-	// Pulling the image succeeds after the read sigstore URL is available:
-	splitSigstoreReadServerHandler = http.FileServer(http.Dir(splitSigstoreStaging))
+	// Pulling the image succeeds after the read lookaside URL is available:
+	splitLookasideReadServerHandler = http.FileServer(http.Dir(splitLookasideStaging))
 	assertSkopeoSucceeds(c, "", "--tls-verify=false", "--policy", policy, "--registries.d", registriesDir, "copy", ourRegistry+"public/busybox", dirDest)
 }
 
@@ -981,13 +981,13 @@ func (s *CopySuite) TestCopyVerifyingMirroredSignatures(c *check.C) {
 	}
 
 	topDir := c.MkDir()
-	registriesDir := filepath.Join(topDir, "registries.d") // An empty directory to disable sigstore use
+	registriesDir := filepath.Join(topDir, "registries.d") // An empty directory to disable lookaside use
 	dirDest := "dir:" + filepath.Join(topDir, "unused-dest")
 
 	policy := fileFromFixture(c, "fixtures/policy.json", map[string]string{"@keydir@": s.gpgHome})
 	defer os.Remove(policy)
 
-	// We use X-R-S-S for this testing to avoid having to deal with the sigstores.
+	// We use X-R-S-S for this testing to avoid having to deal with the lookasides.
 	// A downside is that OpenShift records signatures per image, so the error messages below
 	// list all signatures for other tags used for the same image as well.
 	// So, make sure to never create a signature that could be considered valid in a different part of the test (i.e. don't reuse tags).

integration/fixtures/registries.yaml

@@ -1,6 +1,6 @@
 docker:
    localhost:5555:
-        sigstore: file://@sigstore@
+        lookaside: file://@lookaside@
    localhost:5555/public:
-        sigstore-staging: file://@split-staging@
-        sigstore: @split-read@
+        lookaside-staging: file://@split-staging@
+        lookaside: @split-read@

integration/registry.go

@@ -53,6 +53,9 @@ storage:
         enabled: true
 http:
     addr: %s
+compatibility:
+    schema1:
+        enabled: true
 %s`
 	var (
 		htpasswd string
@@ -84,12 +87,13 @@ http:
 		return nil, err
 	}
 
-	binary := binaryV2
+	var cmd *exec.Cmd
 	if schema1 {
-		binary = binaryV2Schema1
+		cmd = exec.Command(binaryV2Schema1, confPath)
+	} else {
+		cmd = exec.Command(binaryV2, "serve", confPath)
 	}
 
-	cmd := exec.Command(binary, confPath)
 	consumeAndLogOutputs(c, fmt.Sprintf("registry-%s", url), cmd)
 	if err := cmd.Start(); err != nil {
 		if os.IsNotExist(err) {

integration/utils.go

@@ -166,7 +166,7 @@ func fileFromFixture(c *check.C, inputPath string, edits map[string]string) stri
 	contents, err := os.ReadFile(inputPath)
 	c.Assert(err, check.IsNil)
 	for template, value := range edits {
-		updated := bytes.Replace(contents, []byte(template), []byte(value), -1)
+		updated := bytes.ReplaceAll(contents, []byte(template), []byte(value))
 		c.Assert(bytes.Equal(updated, contents), check.Equals, false, check.Commentf("Replacing %s in %#v failed", template, string(contents))) // Verify that the template has matched something and we are not silently ignoring it.
 		contents = updated
 	}

skopeo.spec.rpkg

@@ -0,0 +1,132 @@
+# For automatic rebuilds in COPR
+
+# The following tag is to get correct syntax highlighting for this file in vim text editor
+# vim: syntax=spec
+
+# Any additinoal comments should go below this line or else syntax highlighting
+# may not work.
+
+# CAUTION: This is not a replacement for RPMs provided by your distro.
+# Only intended to build and test the latest unreleased changes.
+
+%global gomodulesmode GO111MODULE=on
+%global with_debug 1
+
+%if 0%{?with_debug}
+%global _find_debuginfo_dwz_opts %{nil}
+%global _dwz_low_mem_die_limit 0
+%else
+%global debug_package %{nil}
+%endif
+
+%if ! 0%{?gobuild:1}
+%define gobuild(o:) go build -buildmode pie -compiler gc -tags="rpm_crashtraceback ${BUILDTAGS:-}" -ldflags "${LDFLAGS:-} -B 0x$(head -c20 /dev/urandom|od -An -tx1|tr -d ' \\n') -extldflags '-Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '" -a -v -x %{?**};
+%endif
+
+Name: {{{ git_dir_name }}}
+Epoch: 101
+Version: {{{ git_dir_version }}}
+Release: 1%{?dist}
+Summary: Inspect container images and repositories on registries
+License: ASL 2.0
+URL: https://github.com/containers/skopeo
+VCS: {{{ git_dir_vcs }}}
+Source: {{{ git_dir_pack }}}
+%if 0%{?fedora} && ! 0%{?rhel}
+BuildRequires: btrfs-progs-devel
+%endif
+BuildRequires: golang >= 1.16.6
+BuildRequires: glib2-devel
+BuildRequires: git-core
+BuildRequires: go-md2man
+%if 0%{?fedora} || 0%{?rhel} >= 9
+BuildRequires: go-rpm-macros
+%endif
+BuildRequires: pkgconfig(devmapper)
+BuildRequires: gpgme-devel
+BuildRequires: libassuan-devel
+BuildRequires: pkgconfig
+BuildRequires: make
+BuildRequires: ostree-devel
+%if 0%{?fedora} <= 35
+Requires: containers-common >= 4:1-39
+%else
+Requires: containers-common >= 4:1-46
+%endif
+
+%description
+Command line utility to inspect images and repositories directly on Docker
+registries without the need to pull them.
+
+%package tests
+Summary: Tests for %{name}
+Requires: %{name} = %{epoch}:%{version}-%{release}
+Requires: bats
+Requires: gnupg
+Requires: jq
+Requires: podman
+Requires: httpd-tools
+Requires: openssl
+Requires: fakeroot
+Requires: squashfs-tools
+
+%description tests
+%{summary}
+
+This package contains system tests for %{name}
+
+%prep
+{{{ git_dir_setup_macro }}}
+
+sed -i 's/install-binary: bin\/skopeo/install-binary:/' Makefile
+
+# This will invoke `make` command in the directory with the extracted sources.
+%build
+%set_build_flags
+export CGO_CFLAGS=$CFLAGS
+# These extra flags present in $CFLAGS have been skipped for now as they break the build
+CGO_CFLAGS=$(echo $CGO_CFLAGS | sed 's/-flto=auto//g')
+CGO_CFLAGS=$(echo $CGO_CFLAGS | sed 's/-Wp,D_GLIBCXX_ASSERTIONS//g')
+CGO_CFLAGS=$(echo $CGO_CFLAGS | sed 's/-specs=\/usr\/lib\/rpm\/redhat\/redhat-annobin-cc1//g')
+
+%ifarch x86_64
+export CGO_CFLAGS+=" -m64 -mtune=generic -fcf-protection=full"
+%endif
+
+LDFLAGS=""
+
+export BUILDTAGS="$(hack/libdm_tag.sh)"
+%if 0%{?rhel}
+export BUILDTAGS="$BUILDTAGS exclude_graphdriver_btrfs btrfs_noversion"
+%endif
+
+%gobuild -o bin/%{name} ./cmd/%{name}
+
+%install
+%{__make} PREFIX=%{buildroot}%{_prefix} install-binary install-docs install-completions
+
+# system tests
+install -d -p %{buildroot}/%{_datadir}/%{name}/test/system
+cp -pav systemtest/* %{buildroot}/%{_datadir}/%{name}/test/system/
+
+%files
+%license LICENSE
+%doc README.md
+%{_bindir}/%{name}
+%{_mandir}/man1/%%{name}*
+%dir %{_datadir}/bash-completion
+%dir %{_datadir}/bash-completion/completions
+%{_datadir}/bash-completion/completions/%{name}
+%dir %{_datadir}/fish
+%dir %{_datadir}/fish/vendor_completions.d
+%{_datadir}/fish/vendor_completions.d/%{name}.fish
+%dir %{_datadir}/zsh
+%dir %{_datadir}/zsh/site-functions
+%{_datadir}/zsh/site-functions/_%{name}
+
+%files tests
+%license LICENSE
+%{_datadir}/%{name}/test
+
+%changelog
+{{{ git_dir_changelog }}}

vendor/github.com/BurntSushi/toml/go.mod

@@ -1,3 +0,0 @@
-module github.com/BurntSushi/toml
-
-go 1.16

vendor/github.com/Microsoft/go-winio/go.mod

@@ -1,8 +0,0 @@
-module github.com/Microsoft/go-winio
-
-go 1.13
-
-require (
-	github.com/sirupsen/logrus v1.7.0
-	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c
-)

vendor/github.com/Microsoft/go-winio/go.sum

@@ -1,11 +0,0 @@
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
-github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c h1:VwygUrnw9jn88c4u8GD3rZQbqrP/tgas88tPUbBxQrk=
-golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

vendor/github.com/Microsoft/hcsshim/go.mod

@@ -1,39 +0,0 @@
-module github.com/Microsoft/hcsshim
-
-go 1.13
-
-require (
-	github.com/BurntSushi/toml v0.3.1
-	github.com/Microsoft/go-winio v0.4.17
-	github.com/cenkalti/backoff/v4 v4.1.1
-	github.com/containerd/cgroups v1.0.1
-	github.com/containerd/console v1.0.2
-	github.com/containerd/containerd v1.5.7
-	github.com/containerd/go-runc v1.0.0
-	github.com/containerd/ttrpc v1.1.0
-	github.com/containerd/typeurl v1.0.2
-	github.com/gogo/protobuf v1.3.2
-	github.com/golang/mock v1.6.0
-	github.com/google/go-cmp v0.5.6
-	github.com/google/go-containerregistry v0.5.1
-	github.com/linuxkit/virtsock v0.0.0-20201010232012-f8cee7dfc7a3
-	github.com/mattn/go-shellwords v1.0.6
-	github.com/opencontainers/runc v1.0.2
-	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417
-	github.com/pkg/errors v0.9.1
-	github.com/sirupsen/logrus v1.8.1
-	github.com/urfave/cli v1.22.2
-	github.com/vishvananda/netlink v1.1.1-0.20201029203352-d40f9887b852
-	github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae
-	go.etcd.io/bbolt v1.3.6
-	go.opencensus.io v0.22.3
-	golang.org/x/net v0.0.0-20210825183410-e898025ed96a // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e
-	google.golang.org/grpc v1.40.0
-)
-
-replace (
-	google.golang.org/genproto => google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63
-	google.golang.org/grpc => google.golang.org/grpc v1.27.1
-)

vendor/github.com/Microsoft/hcsshim/go.sum

@@ -1,993 +0,0 @@
-bazil.org/fuse v0.0.0-20160811212531-371fbbdaa898/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
-cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
-cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
-cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
-cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
-cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
-cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
-cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
-cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
-cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
-cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
-dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/Azure/azure-sdk-for-go v16.2.1+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
-github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-github.com/Azure/go-autorest v10.8.1+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
-github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
-github.com/Azure/go-autorest/autorest v0.11.1/go.mod h1:JFgpikqFJ/MleTTxwepExTKnFUKKszPS8UavbQYUMuw=
-github.com/Azure/go-autorest/autorest/adal v0.9.0/go.mod h1:/c022QCutn2P7uY+/oQWWNcK9YU+MH96NgK+jErpbcg=
-github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A=
-github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74=
-github.com/Azure/go-autorest/autorest/mocks v0.4.0/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k=
-github.com/Azure/go-autorest/autorest/mocks v0.4.1/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k=
-github.com/Azure/go-autorest/logger v0.2.0/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8=
-github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
-github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
-github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
-github.com/Microsoft/go-winio v0.4.16-0.20201130162521-d1ffc52c7331/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0=
-github.com/Microsoft/go-winio v0.4.16/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0=
-github.com/Microsoft/go-winio v0.4.17-0.20210211115548-6eac466e5fa3/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
-github.com/Microsoft/go-winio v0.4.17-0.20210324224401-5516f17a5958/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
-github.com/Microsoft/go-winio v0.4.17 h1:iT12IBVClFevaf8PuVyi3UmZOVh4OqnaLxDTW2O6j3w=
-github.com/Microsoft/go-winio v0.4.17/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
-github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
-github.com/Microsoft/hcsshim v0.8.7-0.20190325164909-8abdbb8205e4/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
-github.com/Microsoft/hcsshim v0.8.7/go.mod h1:OHd7sQqRFrYd3RmSgbgji+ctCwkbq2wbEYNSzOYtcBQ=
-github.com/Microsoft/hcsshim v0.8.9/go.mod h1:5692vkUqntj1idxauYlpoINNKeqCiG6Sg38RRsjT5y8=
-github.com/Microsoft/hcsshim v0.8.14/go.mod h1:NtVKoYxQuTLx6gEq0L96c9Ju4JbRJ4nY2ow3VK6a9Lg=
-github.com/Microsoft/hcsshim v0.8.15/go.mod h1:x38A4YbHbdxJtc0sF6oIz+RG0npwSCAvn69iY6URG00=
-github.com/Microsoft/hcsshim v0.8.16/go.mod h1:o5/SZqmR7x9JNKsW3pu+nqHm0MF8vbA+VxGOoXdC600=
-github.com/Microsoft/hcsshim v0.8.21/go.mod h1:+w2gRZ5ReXQhFOrvSQeNfhrYB/dg3oDwTOcER2fw4I4=
-github.com/Microsoft/hcsshim/test v0.0.0-20201218223536-d3e5debf77da/go.mod h1:5hlzMzRKMLyo42nCZ9oml8AdTlq/0cvIaBv6tK1RehU=
-github.com/Microsoft/hcsshim/test v0.0.0-20210227013316-43a75bb4edd3/go.mod h1:mw7qgWloBUl75W/gVH3cQszUg1+gUITj7D6NY7ywVnY=
-github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
-github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
-github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alexflint/go-filemutex v0.0.0-20171022225611-72bdc8eae2ae/go.mod h1:CgnQgUtFrFz9mxFNtED3jI5tLDjKlOM+oUF/sTk6ps0=
-github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
-github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
-github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
-github.com/beorn7/perks v0.0.0-20160804104726-4c0e84591b9a/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
-github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
-github.com/bits-and-blooms/bitset v1.2.0/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
-github.com/blang/semver v3.1.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
-github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
-github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
-github.com/bshuster-repo/logrus-logstash-hook v0.4.1/go.mod h1:zsTqEiSzDgAa/8GZR7E1qaXrhYNDKBYy5/dWPTIflbk=
-github.com/buger/jsonparser v0.0.0-20180808090653-f4dd9f5a6b44/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
-github.com/bugsnag/bugsnag-go v0.0.0-20141110184014-b1d153021fcd/go.mod h1:2oa8nejYd4cQ/b0hMIopN0lCRxU0bueqREvZLWFrtK8=
-github.com/bugsnag/osext v0.0.0-20130617224835-0dd3f918b21b/go.mod h1:obH5gd0BsqsP2LwDJ9aOkm/6J86V6lyAXCoQWGw3K50=
-github.com/bugsnag/panicwrap v0.0.0-20151223152923-e2c28503fcd0/go.mod h1:D/8v3kj0zr8ZAKg1AQ6crr+5VwKN5eIywRkfhyM/+dE=
-github.com/cenkalti/backoff/v4 v4.1.1 h1:G2HAfAmvm/GcKan2oOQpBXOd2tT2G57ZnZGWa1PxPBQ=
-github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/checkpoint-restore/go-criu/v4 v4.1.0/go.mod h1:xUQBLp4RLc5zJtWY++yjOoMoB5lihDt7fai+75m+rGw=
-github.com/checkpoint-restore/go-criu/v5 v5.0.0/go.mod h1:cfwC0EG7HMUenopBsUf9d89JlCLQIfgVcNsNN0t6T2M=
-github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/cilium/ebpf v0.0.0-20200110133405-4032b1d8aae3/go.mod h1:MA5e5Lr8slmEg9bt0VpxxWqJlO4iwu3FBdHUzV7wQVg=
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-honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-k8s.io/api v0.20.1/go.mod h1:KqwcCVogGxQY3nBlRpwt+wpAMF/KjaCc7RpywacvqUo=
-k8s.io/api v0.20.4/go.mod h1:++lNL1AJMkDymriNniQsWRkMDzRaX2Y/POTUi8yvqYQ=
-k8s.io/api v0.20.6/go.mod h1:X9e8Qag6JV/bL5G6bU8sdVRltWKmdHsFUGS3eVndqE8=
-k8s.io/apimachinery v0.20.1/go.mod h1:WlLqWAHZGg07AeltaI0MV5uk1Omp8xaN0JGLY6gkRpU=
-k8s.io/apimachinery v0.20.4/go.mod h1:WlLqWAHZGg07AeltaI0MV5uk1Omp8xaN0JGLY6gkRpU=
-k8s.io/apimachinery v0.20.6/go.mod h1:ejZXtW1Ra6V1O5H8xPBGz+T3+4gfkTCeExAHKU57MAc=
-k8s.io/apiserver v0.20.1/go.mod h1:ro5QHeQkgMS7ZGpvf4tSMx6bBOgPfE+f52KwvXfScaU=
-k8s.io/apiserver v0.20.4/go.mod h1:Mc80thBKOyy7tbvFtB4kJv1kbdD0eIH8k8vianJcbFM=
-k8s.io/apiserver v0.20.6/go.mod h1:QIJXNt6i6JB+0YQRNcS0hdRHJlMhflFmsBDeSgT1r8Q=
-k8s.io/client-go v0.20.1/go.mod h1:/zcHdt1TeWSd5HoUe6elJmHSQ6uLLgp4bIJHVEuy+/Y=
-k8s.io/client-go v0.20.4/go.mod h1:LiMv25ND1gLUdBeYxBIwKpkSC5IsozMMmOOeSJboP+k=
-k8s.io/client-go v0.20.6/go.mod h1:nNQMnOvEUEsOzRRFIIkdmYOjAZrC8bgq0ExboWSU1I0=
-k8s.io/code-generator v0.19.7/go.mod h1:lwEq3YnLYb/7uVXLorOJfxg+cUu2oihFhHZ0n9NIla0=
-k8s.io/component-base v0.20.1/go.mod h1:guxkoJnNoh8LNrbtiQOlyp2Y2XFCZQmrcg2n/DeYNLk=
-k8s.io/component-base v0.20.4/go.mod h1:t4p9EdiagbVCJKrQ1RsA5/V4rFQNDfRlevJajlGwgjI=
-k8s.io/component-base v0.20.6/go.mod h1:6f1MPBAeI+mvuts3sIdtpjljHWBQ2cIy38oBIWMYnrM=
-k8s.io/cri-api v0.17.3/go.mod h1:X1sbHmuXhwaHs9xxYffLqJogVsnI+f6cPRcgPel7ywM=
-k8s.io/cri-api v0.20.1/go.mod h1:2JRbKt+BFLTjtrILYVqQK5jqhI+XNdF6UiGMgczeBCI=
-k8s.io/cri-api v0.20.4/go.mod h1:2JRbKt+BFLTjtrILYVqQK5jqhI+XNdF6UiGMgczeBCI=
-k8s.io/cri-api v0.20.6/go.mod h1:ew44AjNXwyn1s0U4xCKGodU7J1HzBeZ1MpGrpa5r8Yc=
-k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
-k8s.io/gengo v0.0.0-20200428234225-8167cfdcfc14/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
-k8s.io/gengo v0.0.0-20201113003025-83324d819ded/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
-k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
-k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
-k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
-k8s.io/kube-openapi v0.0.0-20200805222855-6aeccd4b50c6/go.mod h1:UuqjUnNftUyPE5H64/qeyjQoUZhGpeFDVdxjTeEVN2o=
-k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd/go.mod h1:WOJ3KddDSol4tAGcJo0Tvi+dK12EcqSLqcWsryKMpfM=
-k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
-k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
-rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
-sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.14/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
-sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
-sigs.k8s.io/structured-merge-diff/v4 v4.0.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
-sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
-sigs.k8s.io/structured-merge-diff/v4 v4.0.3/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
-sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
-sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

vendor/github.com/VividCortex/ewma/go.mod

@@ -1,3 +0,0 @@
-module github.com/VividCortex/ewma
-
-go 1.12

vendor/github.com/cespare/xxhash/v2/go.mod

@@ -1,3 +0,0 @@
-module github.com/cespare/xxhash/v2
-
-go 1.11

vendor/github.com/containerd/containerd/NOTICE

@@ -1,16 +0,0 @@
-Docker
-Copyright 2012-2015 Docker, Inc.
-
-This product includes software developed at Docker, Inc. (https://www.docker.com).
-
-The following is courtesy of our legal counsel:
-
-
-Use and transfer of Docker may be subject to certain restrictions by the
-United States and other governments.
-It is your responsibility to ensure that your use and/or transfer does not
-violate applicable laws.
-
-For more information, please see https://www.bis.doc.gov
-
-See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/containerd/containerd/errdefs/errors.go

@@ -1,92 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-// Package errdefs defines the common errors used throughout containerd
-// packages.
-//
-// Use with fmt.Errorf to add context to an error.
-//
-// To detect an error class, use the IsXXX functions to tell whether an error
-// is of a certain type.
-//
-// The functions ToGRPC and FromGRPC can be used to map server-side and
-// client-side errors to the correct types.
-package errdefs
-
-import (
-	"context"
-	"errors"
-)
-
-// Definitions of common error types used throughout containerd. All containerd
-// errors returned by most packages will map into one of these errors classes.
-// Packages should return errors of these types when they want to instruct a
-// client to take a particular action.
-//
-// For the most part, we just try to provide local grpc errors. Most conditions
-// map very well to those defined by grpc.
-var (
-	ErrUnknown            = errors.New("unknown") // used internally to represent a missed mapping.
-	ErrInvalidArgument    = errors.New("invalid argument")
-	ErrNotFound           = errors.New("not found")
-	ErrAlreadyExists      = errors.New("already exists")
-	ErrFailedPrecondition = errors.New("failed precondition")
-	ErrUnavailable        = errors.New("unavailable")
-	ErrNotImplemented     = errors.New("not implemented") // represents not supported and unimplemented
-)
-
-// IsInvalidArgument returns true if the error is due to an invalid argument
-func IsInvalidArgument(err error) bool {
-	return errors.Is(err, ErrInvalidArgument)
-}
-
-// IsNotFound returns true if the error is due to a missing object
-func IsNotFound(err error) bool {
-	return errors.Is(err, ErrNotFound)
-}
-
-// IsAlreadyExists returns true if the error is due to an already existing
-// metadata item
-func IsAlreadyExists(err error) bool {
-	return errors.Is(err, ErrAlreadyExists)
-}
-
-// IsFailedPrecondition returns true if an operation could not proceed to the
-// lack of a particular condition
-func IsFailedPrecondition(err error) bool {
-	return errors.Is(err, ErrFailedPrecondition)
-}
-
-// IsUnavailable returns true if the error is due to a resource being unavailable
-func IsUnavailable(err error) bool {
-	return errors.Is(err, ErrUnavailable)
-}
-
-// IsNotImplemented returns true if the error is due to not being implemented
-func IsNotImplemented(err error) bool {
-	return errors.Is(err, ErrNotImplemented)
-}
-
-// IsCanceled returns true if the error is due to `context.Canceled`.
-func IsCanceled(err error) bool {
-	return errors.Is(err, context.Canceled)
-}
-
-// IsDeadlineExceeded returns true if the error is due to
-// `context.DeadlineExceeded`.
-func IsDeadlineExceeded(err error) bool {
-	return errors.Is(err, context.DeadlineExceeded)
-}

vendor/github.com/containerd/containerd/errdefs/grpc.go

@@ -1,147 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package errdefs
-
-import (
-	"context"
-	"fmt"
-	"strings"
-
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-// ToGRPC will attempt to map the backend containerd error into a grpc error,
-// using the original error message as a description.
-//
-// Further information may be extracted from certain errors depending on their
-// type.
-//
-// If the error is unmapped, the original error will be returned to be handled
-// by the regular grpc error handling stack.
-func ToGRPC(err error) error {
-	if err == nil {
-		return nil
-	}
-
-	if isGRPCError(err) {
-		// error has already been mapped to grpc
-		return err
-	}
-
-	switch {
-	case IsInvalidArgument(err):
-		return status.Errorf(codes.InvalidArgument, err.Error())
-	case IsNotFound(err):
-		return status.Errorf(codes.NotFound, err.Error())
-	case IsAlreadyExists(err):
-		return status.Errorf(codes.AlreadyExists, err.Error())
-	case IsFailedPrecondition(err):
-		return status.Errorf(codes.FailedPrecondition, err.Error())
-	case IsUnavailable(err):
-		return status.Errorf(codes.Unavailable, err.Error())
-	case IsNotImplemented(err):
-		return status.Errorf(codes.Unimplemented, err.Error())
-	case IsCanceled(err):
-		return status.Errorf(codes.Canceled, err.Error())
-	case IsDeadlineExceeded(err):
-		return status.Errorf(codes.DeadlineExceeded, err.Error())
-	}
-
-	return err
-}
-
-// ToGRPCf maps the error to grpc error codes, assembling the formatting string
-// and combining it with the target error string.
-//
-// This is equivalent to errdefs.ToGRPC(fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), err))
-func ToGRPCf(err error, format string, args ...interface{}) error {
-	return ToGRPC(fmt.Errorf("%s: %w", fmt.Sprintf(format, args...), err))
-}
-
-// FromGRPC returns the underlying error from a grpc service based on the grpc error code
-func FromGRPC(err error) error {
-	if err == nil {
-		return nil
-	}
-
-	var cls error // divide these into error classes, becomes the cause
-
-	switch code(err) {
-	case codes.InvalidArgument:
-		cls = ErrInvalidArgument
-	case codes.AlreadyExists:
-		cls = ErrAlreadyExists
-	case codes.NotFound:
-		cls = ErrNotFound
-	case codes.Unavailable:
-		cls = ErrUnavailable
-	case codes.FailedPrecondition:
-		cls = ErrFailedPrecondition
-	case codes.Unimplemented:
-		cls = ErrNotImplemented
-	case codes.Canceled:
-		cls = context.Canceled
-	case codes.DeadlineExceeded:
-		cls = context.DeadlineExceeded
-	default:
-		cls = ErrUnknown
-	}
-
-	msg := rebaseMessage(cls, err)
-	if msg != "" {
-		err = fmt.Errorf("%s: %w", msg, cls)
-	} else {
-		err = cls
-	}
-
-	return err
-}
-
-// rebaseMessage removes the repeats for an error at the end of an error
-// string. This will happen when taking an error over grpc then remapping it.
-//
-// Effectively, we just remove the string of cls from the end of err if it
-// appears there.
-func rebaseMessage(cls error, err error) string {
-	desc := errDesc(err)
-	clss := cls.Error()
-	if desc == clss {
-		return ""
-	}
-
-	return strings.TrimSuffix(desc, ": "+clss)
-}
-
-func isGRPCError(err error) bool {
-	_, ok := status.FromError(err)
-	return ok
-}
-
-func code(err error) codes.Code {
-	if s, ok := status.FromError(err); ok {
-		return s.Code()
-	}
-	return codes.Unknown
-}
-
-func errDesc(err error) string {
-	if s, ok := status.FromError(err); ok {
-		return s.Message()
-	}
-	return err.Error()
-}

vendor/github.com/containerd/containerd/log/context.go

@@ -1,69 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package log
-
-import (
-	"context"
-
-	"github.com/sirupsen/logrus"
-)
-
-var (
-	// G is an alias for GetLogger.
-	//
-	// We may want to define this locally to a package to get package tagged log
-	// messages.
-	G = GetLogger
-
-	// L is an alias for the standard logger.
-	L = logrus.NewEntry(logrus.StandardLogger())
-)
-
-type (
-	loggerKey struct{}
-)
-
-const (
-	// RFC3339NanoFixed is time.RFC3339Nano with nanoseconds padded using zeros to
-	// ensure the formatted time is always the same number of characters.
-	RFC3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"
-
-	// TextFormat represents the text logging format
-	TextFormat = "text"
-
-	// JSONFormat represents the JSON logging format
-	JSONFormat = "json"
-)
-
-// WithLogger returns a new context with the provided logger. Use in
-// combination with logger.WithField(s) for great effect.
-func WithLogger(ctx context.Context, logger *logrus.Entry) context.Context {
-	e := logger.WithContext(ctx)
-	return context.WithValue(ctx, loggerKey{}, e)
-}
-
-// GetLogger retrieves the current logger from the context. If no logger is
-// available, the default logger is returned.
-func GetLogger(ctx context.Context) *logrus.Entry {
-	logger := ctx.Value(loggerKey{})
-
-	if logger == nil {
-		return L.WithContext(ctx)
-	}
-
-	return logger.(*logrus.Entry)
-}

vendor/github.com/containerd/containerd/platforms/compare.go

@@ -1,203 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-import (
-	"strconv"
-	"strings"
-
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
-)
-
-// MatchComparer is able to match and compare platforms to
-// filter and sort platforms.
-type MatchComparer interface {
-	Matcher
-
-	Less(specs.Platform, specs.Platform) bool
-}
-
-// platformVector returns an (ordered) vector of appropriate specs.Platform
-// objects to try matching for the given platform object (see platforms.Only).
-func platformVector(platform specs.Platform) []specs.Platform {
-	vector := []specs.Platform{platform}
-
-	switch platform.Architecture {
-	case "amd64":
-		if amd64Version, err := strconv.Atoi(strings.TrimPrefix(platform.Variant, "v")); err == nil && amd64Version > 1 {
-			for amd64Version--; amd64Version >= 1; amd64Version-- {
-				vector = append(vector, specs.Platform{
-					Architecture: platform.Architecture,
-					OS:           platform.OS,
-					OSVersion:    platform.OSVersion,
-					OSFeatures:   platform.OSFeatures,
-					Variant:      "v" + strconv.Itoa(amd64Version),
-				})
-			}
-		}
-		vector = append(vector, specs.Platform{
-			Architecture: "386",
-			OS:           platform.OS,
-			OSVersion:    platform.OSVersion,
-			OSFeatures:   platform.OSFeatures,
-		})
-	case "arm":
-		if armVersion, err := strconv.Atoi(strings.TrimPrefix(platform.Variant, "v")); err == nil && armVersion > 5 {
-			for armVersion--; armVersion >= 5; armVersion-- {
-				vector = append(vector, specs.Platform{
-					Architecture: platform.Architecture,
-					OS:           platform.OS,
-					OSVersion:    platform.OSVersion,
-					OSFeatures:   platform.OSFeatures,
-					Variant:      "v" + strconv.Itoa(armVersion),
-				})
-			}
-		}
-	case "arm64":
-		variant := platform.Variant
-		if variant == "" {
-			variant = "v8"
-		}
-		vector = append(vector, platformVector(specs.Platform{
-			Architecture: "arm",
-			OS:           platform.OS,
-			OSVersion:    platform.OSVersion,
-			OSFeatures:   platform.OSFeatures,
-			Variant:      variant,
-		})...)
-	}
-
-	return vector
-}
-
-// Only returns a match comparer for a single platform
-// using default resolution logic for the platform.
-//
-// For arm/v8, will also match arm/v7, arm/v6 and arm/v5
-// For arm/v7, will also match arm/v6 and arm/v5
-// For arm/v6, will also match arm/v5
-// For amd64, will also match 386
-func Only(platform specs.Platform) MatchComparer {
-	return Ordered(platformVector(Normalize(platform))...)
-}
-
-// OnlyStrict returns a match comparer for a single platform.
-//
-// Unlike Only, OnlyStrict does not match sub platforms.
-// So, "arm/vN" will not match "arm/vM" where M < N,
-// and "amd64" will not also match "386".
-//
-// OnlyStrict matches non-canonical forms.
-// So, "arm64" matches "arm/64/v8".
-func OnlyStrict(platform specs.Platform) MatchComparer {
-	return Ordered(Normalize(platform))
-}
-
-// Ordered returns a platform MatchComparer which matches any of the platforms
-// but orders them in order they are provided.
-func Ordered(platforms ...specs.Platform) MatchComparer {
-	matchers := make([]Matcher, len(platforms))
-	for i := range platforms {
-		matchers[i] = NewMatcher(platforms[i])
-	}
-	return orderedPlatformComparer{
-		matchers: matchers,
-	}
-}
-
-// Any returns a platform MatchComparer which matches any of the platforms
-// with no preference for ordering.
-func Any(platforms ...specs.Platform) MatchComparer {
-	matchers := make([]Matcher, len(platforms))
-	for i := range platforms {
-		matchers[i] = NewMatcher(platforms[i])
-	}
-	return anyPlatformComparer{
-		matchers: matchers,
-	}
-}
-
-// All is a platform MatchComparer which matches all platforms
-// with preference for ordering.
-var All MatchComparer = allPlatformComparer{}
-
-type orderedPlatformComparer struct {
-	matchers []Matcher
-}
-
-func (c orderedPlatformComparer) Match(platform specs.Platform) bool {
-	for _, m := range c.matchers {
-		if m.Match(platform) {
-			return true
-		}
-	}
-	return false
-}
-
-func (c orderedPlatformComparer) Less(p1 specs.Platform, p2 specs.Platform) bool {
-	for _, m := range c.matchers {
-		p1m := m.Match(p1)
-		p2m := m.Match(p2)
-		if p1m && !p2m {
-			return true
-		}
-		if p1m || p2m {
-			return false
-		}
-	}
-	return false
-}
-
-type anyPlatformComparer struct {
-	matchers []Matcher
-}
-
-func (c anyPlatformComparer) Match(platform specs.Platform) bool {
-	for _, m := range c.matchers {
-		if m.Match(platform) {
-			return true
-		}
-	}
-	return false
-}
-
-func (c anyPlatformComparer) Less(p1, p2 specs.Platform) bool {
-	var p1m, p2m bool
-	for _, m := range c.matchers {
-		if !p1m && m.Match(p1) {
-			p1m = true
-		}
-		if !p2m && m.Match(p2) {
-			p2m = true
-		}
-		if p1m && p2m {
-			return false
-		}
-	}
-	// If one matches, and the other does, sort match first
-	return p1m && !p2m
-}
-
-type allPlatformComparer struct{}
-
-func (allPlatformComparer) Match(specs.Platform) bool {
-	return true
-}
-
-func (allPlatformComparer) Less(specs.Platform, specs.Platform) bool {
-	return false
-}

vendor/github.com/containerd/containerd/platforms/cpuinfo.go

@@ -1,131 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"runtime"
-	"strings"
-	"sync"
-
-	"github.com/containerd/containerd/errdefs"
-	"github.com/containerd/containerd/log"
-)
-
-// Present the ARM instruction set architecture, eg: v7, v8
-// Don't use this value directly; call cpuVariant() instead.
-var cpuVariantValue string
-
-var cpuVariantOnce sync.Once
-
-func cpuVariant() string {
-	cpuVariantOnce.Do(func() {
-		if isArmArch(runtime.GOARCH) {
-			cpuVariantValue = getCPUVariant()
-		}
-	})
-	return cpuVariantValue
-}
-
-// For Linux, the kernel has already detected the ABI, ISA and Features.
-// So we don't need to access the ARM registers to detect platform information
-// by ourselves. We can just parse these information from /proc/cpuinfo
-func getCPUInfo(pattern string) (info string, err error) {
-	if !isLinuxOS(runtime.GOOS) {
-		return "", fmt.Errorf("getCPUInfo for OS %s: %w", runtime.GOOS, errdefs.ErrNotImplemented)
-	}
-
-	cpuinfo, err := os.Open("/proc/cpuinfo")
-	if err != nil {
-		return "", err
-	}
-	defer cpuinfo.Close()
-
-	// Start to Parse the Cpuinfo line by line. For SMP SoC, we parse
-	// the first core is enough.
-	scanner := bufio.NewScanner(cpuinfo)
-	for scanner.Scan() {
-		newline := scanner.Text()
-		list := strings.Split(newline, ":")
-
-		if len(list) > 1 && strings.EqualFold(strings.TrimSpace(list[0]), pattern) {
-			return strings.TrimSpace(list[1]), nil
-		}
-	}
-
-	// Check whether the scanner encountered errors
-	err = scanner.Err()
-	if err != nil {
-		return "", err
-	}
-
-	return "", fmt.Errorf("getCPUInfo for pattern: %s: %w", pattern, errdefs.ErrNotFound)
-}
-
-func getCPUVariant() string {
-	if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
-		// Windows/Darwin only supports v7 for ARM32 and v8 for ARM64 and so we can use
-		// runtime.GOARCH to determine the variants
-		var variant string
-		switch runtime.GOARCH {
-		case "arm64":
-			variant = "v8"
-		case "arm":
-			variant = "v7"
-		default:
-			variant = "unknown"
-		}
-
-		return variant
-	}
-
-	variant, err := getCPUInfo("Cpu architecture")
-	if err != nil {
-		log.L.WithError(err).Error("failure getting variant")
-		return ""
-	}
-
-	// handle edge case for Raspberry Pi ARMv6 devices (which due to a kernel quirk, report "CPU architecture: 7")
-	// https://www.raspberrypi.org/forums/viewtopic.php?t=12614
-	if runtime.GOARCH == "arm" && variant == "7" {
-		model, err := getCPUInfo("model name")
-		if err == nil && strings.HasPrefix(strings.ToLower(model), "armv6-compatible") {
-			variant = "6"
-		}
-	}
-
-	switch strings.ToLower(variant) {
-	case "8", "aarch64":
-		variant = "v8"
-	case "7", "7m", "?(12)", "?(13)", "?(14)", "?(15)", "?(16)", "?(17)":
-		variant = "v7"
-	case "6", "6tej":
-		variant = "v6"
-	case "5", "5t", "5te", "5tej":
-		variant = "v5"
-	case "4", "4t":
-		variant = "v4"
-	case "3":
-		variant = "v3"
-	default:
-		variant = "unknown"
-	}
-
-	return variant
-}

vendor/github.com/containerd/containerd/platforms/database.go

@@ -1,116 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-import (
-	"runtime"
-	"strings"
-)
-
-// isLinuxOS returns true if the operating system is Linux.
-//
-// The OS value should be normalized before calling this function.
-func isLinuxOS(os string) bool {
-	return os == "linux"
-}
-
-// These function are generated from https://golang.org/src/go/build/syslist.go.
-//
-// We use switch statements because they are slightly faster than map lookups
-// and use a little less memory.
-
-// isKnownOS returns true if we know about the operating system.
-//
-// The OS value should be normalized before calling this function.
-func isKnownOS(os string) bool {
-	switch os {
-	case "aix", "android", "darwin", "dragonfly", "freebsd", "hurd", "illumos", "ios", "js", "linux", "nacl", "netbsd", "openbsd", "plan9", "solaris", "windows", "zos":
-		return true
-	}
-	return false
-}
-
-// isArmArch returns true if the architecture is ARM.
-//
-// The arch value should be normalized before being passed to this function.
-func isArmArch(arch string) bool {
-	switch arch {
-	case "arm", "arm64":
-		return true
-	}
-	return false
-}
-
-// isKnownArch returns true if we know about the architecture.
-//
-// The arch value should be normalized before being passed to this function.
-func isKnownArch(arch string) bool {
-	switch arch {
-	case "386", "amd64", "amd64p32", "arm", "armbe", "arm64", "arm64be", "ppc64", "ppc64le", "loong64", "mips", "mipsle", "mips64", "mips64le", "mips64p32", "mips64p32le", "ppc", "riscv", "riscv64", "s390", "s390x", "sparc", "sparc64", "wasm":
-		return true
-	}
-	return false
-}
-
-func normalizeOS(os string) string {
-	if os == "" {
-		return runtime.GOOS
-	}
-	os = strings.ToLower(os)
-
-	switch os {
-	case "macos":
-		os = "darwin"
-	}
-	return os
-}
-
-// normalizeArch normalizes the architecture.
-func normalizeArch(arch, variant string) (string, string) {
-	arch, variant = strings.ToLower(arch), strings.ToLower(variant)
-	switch arch {
-	case "i386":
-		arch = "386"
-		variant = ""
-	case "x86_64", "x86-64", "amd64":
-		arch = "amd64"
-		if variant == "v1" {
-			variant = ""
-		}
-	case "aarch64", "arm64":
-		arch = "arm64"
-		switch variant {
-		case "8", "v8":
-			variant = ""
-		}
-	case "armhf":
-		arch = "arm"
-		variant = "v7"
-	case "armel":
-		arch = "arm"
-		variant = "v6"
-	case "arm":
-		switch variant {
-		case "", "7":
-			variant = "v7"
-		case "5", "6", "8":
-			variant = "v" + variant
-		}
-	}
-
-	return arch, variant
-}

vendor/github.com/containerd/containerd/platforms/defaults.go

@@ -1,27 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-// DefaultString returns the default string specifier for the platform.
-func DefaultString() string {
-	return Format(DefaultSpec())
-}
-
-// DefaultStrict returns strict form of Default.
-func DefaultStrict() MatchComparer {
-	return OnlyStrict(DefaultSpec())
-}

vendor/github.com/containerd/containerd/platforms/defaults_darwin.go

@@ -1,45 +0,0 @@
-//go:build darwin
-// +build darwin
-
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-import (
-	"runtime"
-
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
-)
-
-// DefaultSpec returns the current platform's default platform specification.
-func DefaultSpec() specs.Platform {
-	return specs.Platform{
-		OS:           runtime.GOOS,
-		Architecture: runtime.GOARCH,
-		// The Variant field will be empty if arch != ARM.
-		Variant: cpuVariant(),
-	}
-}
-
-// Default returns the default matcher for the platform.
-func Default() MatchComparer {
-	return Ordered(DefaultSpec(), specs.Platform{
-		// darwin runtime also supports Linux binary via runu/LKL
-		OS:           "linux",
-		Architecture: runtime.GOARCH,
-	})
-}

vendor/github.com/containerd/containerd/platforms/defaults_unix.go

@@ -1,41 +0,0 @@
-//go:build !windows && !darwin
-// +build !windows,!darwin
-
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-import (
-	"runtime"
-
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
-)
-
-// DefaultSpec returns the current platform's default platform specification.
-func DefaultSpec() specs.Platform {
-	return specs.Platform{
-		OS:           runtime.GOOS,
-		Architecture: runtime.GOARCH,
-		// The Variant field will be empty if arch != ARM.
-		Variant: cpuVariant(),
-	}
-}
-
-// Default returns the default matcher for the platform.
-func Default() MatchComparer {
-	return Only(DefaultSpec())
-}

vendor/github.com/containerd/containerd/platforms/defaults_windows.go

@@ -1,91 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package platforms
-
-import (
-	"fmt"
-	"runtime"
-	"strconv"
-	"strings"
-
-	imagespec "github.com/opencontainers/image-spec/specs-go/v1"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
-	"golang.org/x/sys/windows"
-)
-
-// DefaultSpec returns the current platform's default platform specification.
-func DefaultSpec() specs.Platform {
-	major, minor, build := windows.RtlGetNtVersionNumbers()
-	return specs.Platform{
-		OS:           runtime.GOOS,
-		Architecture: runtime.GOARCH,
-		OSVersion:    fmt.Sprintf("%d.%d.%d", major, minor, build),
-		// The Variant field will be empty if arch != ARM.
-		Variant: cpuVariant(),
-	}
-}
-
-type matchComparer struct {
-	defaults        Matcher
-	osVersionPrefix string
-}
-
-// Match matches platform with the same windows major, minor
-// and build version.
-func (m matchComparer) Match(p imagespec.Platform) bool {
-	if m.defaults.Match(p) {
-		// TODO(windows): Figure out whether OSVersion is deprecated.
-		return strings.HasPrefix(p.OSVersion, m.osVersionPrefix)
-	}
-	return false
-}
-
-// Less sorts matched platforms in front of other platforms.
-// For matched platforms, it puts platforms with larger revision
-// number in front.
-func (m matchComparer) Less(p1, p2 imagespec.Platform) bool {
-	m1, m2 := m.Match(p1), m.Match(p2)
-	if m1 && m2 {
-		r1, r2 := revision(p1.OSVersion), revision(p2.OSVersion)
-		return r1 > r2
-	}
-	return m1 && !m2
-}
-
-func revision(v string) int {
-	parts := strings.Split(v, ".")
-	if len(parts) < 4 {
-		return 0
-	}
-	r, err := strconv.Atoi(parts[3])
-	if err != nil {
-		return 0
-	}
-	return r
-}
-
-// Default returns the current platform's default platform specification.
-func Default() MatchComparer {
-	major, minor, build := windows.RtlGetNtVersionNumbers()
-	return matchComparer{
-		defaults: Ordered(DefaultSpec(), specs.Platform{
-			OS:           "linux",
-			Architecture: runtime.GOARCH,
-		}),
-		osVersionPrefix: fmt.Sprintf("%d.%d.%d", major, minor, build),
-	}
-}

vendor/github.com/containerd/containerd/platforms/platforms.go

@@ -1,261 +0,0 @@
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-// Package platforms provides a toolkit for normalizing, matching and
-// specifying container platforms.
-//
-// Centered around OCI platform specifications, we define a string-based
-// specifier syntax that can be used for user input. With a specifier, users
-// only need to specify the parts of the platform that are relevant to their
-// context, providing an operating system or architecture or both.
-//
-// How do I use this package?
-//
-// The vast majority of use cases should simply use the match function with
-// user input. The first step is to parse a specifier into a matcher:
-//
-//   m, err := Parse("linux")
-//   if err != nil { ... }
-//
-// Once you have a matcher, use it to match against the platform declared by a
-// component, typically from an image or runtime. Since extracting an images
-// platform is a little more involved, we'll use an example against the
-// platform default:
-//
-//   if ok := m.Match(Default()); !ok { /* doesn't match */ }
-//
-// This can be composed in loops for resolving runtimes or used as a filter for
-// fetch and select images.
-//
-// More details of the specifier syntax and platform spec follow.
-//
-// Declaring Platform Support
-//
-// Components that have strict platform requirements should use the OCI
-// platform specification to declare their support. Typically, this will be
-// images and runtimes that should make these declaring which platform they
-// support specifically. This looks roughly as follows:
-//
-//   type Platform struct {
-//	   Architecture string
-//	   OS           string
-//	   Variant      string
-//   }
-//
-// Most images and runtimes should at least set Architecture and OS, according
-// to their GOARCH and GOOS values, respectively (follow the OCI image
-// specification when in doubt). ARM should set variant under certain
-// discussions, which are outlined below.
-//
-// Platform Specifiers
-//
-// While the OCI platform specifications provide a tool for components to
-// specify structured information, user input typically doesn't need the full
-// context and much can be inferred. To solve this problem, we introduced
-// "specifiers". A specifier has the format
-// `<os>|<arch>|<os>/<arch>[/<variant>]`.  The user can provide either the
-// operating system or the architecture or both.
-//
-// An example of a common specifier is `linux/amd64`. If the host has a default
-// of runtime that matches this, the user can simply provide the component that
-// matters. For example, if a image provides amd64 and arm64 support, the
-// operating system, `linux` can be inferred, so they only have to provide
-// `arm64` or `amd64`. Similar behavior is implemented for operating systems,
-// where the architecture may be known but a runtime may support images from
-// different operating systems.
-//
-// Normalization
-//
-// Because not all users are familiar with the way the Go runtime represents
-// platforms, several normalizations have been provided to make this package
-// easier to user.
-//
-// The following are performed for architectures:
-//
-//   Value    Normalized
-//   aarch64  arm64
-//   armhf    arm
-//   armel    arm/v6
-//   i386     386
-//   x86_64   amd64
-//   x86-64   amd64
-//
-// We also normalize the operating system `macos` to `darwin`.
-//
-// ARM Support
-//
-// To qualify ARM architecture, the Variant field is used to qualify the arm
-// version. The most common arm version, v7, is represented without the variant
-// unless it is explicitly provided. This is treated as equivalent to armhf. A
-// previous architecture, armel, will be normalized to arm/v6.
-//
-// While these normalizations are provided, their support on arm platforms has
-// not yet been fully implemented and tested.
-package platforms
-
-import (
-	"fmt"
-	"path"
-	"regexp"
-	"runtime"
-	"strconv"
-	"strings"
-
-	"github.com/containerd/containerd/errdefs"
-	specs "github.com/opencontainers/image-spec/specs-go/v1"
-)
-
-var (
-	specifierRe = regexp.MustCompile(`^[A-Za-z0-9_-]+$`)
-)
-
-// Matcher matches platforms specifications, provided by an image or runtime.
-type Matcher interface {
-	Match(platform specs.Platform) bool
-}
-
-// NewMatcher returns a simple matcher based on the provided platform
-// specification. The returned matcher only looks for equality based on os,
-// architecture and variant.
-//
-// One may implement their own matcher if this doesn't provide the required
-// functionality.
-//
-// Applications should opt to use `Match` over directly parsing specifiers.
-func NewMatcher(platform specs.Platform) Matcher {
-	return &matcher{
-		Platform: Normalize(platform),
-	}
-}
-
-type matcher struct {
-	specs.Platform
-}
-
-func (m *matcher) Match(platform specs.Platform) bool {
-	normalized := Normalize(platform)
-	return m.OS == normalized.OS &&
-		m.Architecture == normalized.Architecture &&
-		m.Variant == normalized.Variant
-}
-
-func (m *matcher) String() string {
-	return Format(m.Platform)
-}
-
-// Parse parses the platform specifier syntax into a platform declaration.
-//
-// Platform specifiers are in the format `<os>|<arch>|<os>/<arch>[/<variant>]`.
-// The minimum required information for a platform specifier is the operating
-// system or architecture. If there is only a single string (no slashes), the
-// value will be matched against the known set of operating systems, then fall
-// back to the known set of architectures. The missing component will be
-// inferred based on the local environment.
-func Parse(specifier string) (specs.Platform, error) {
-	if strings.Contains(specifier, "*") {
-		// TODO(stevvooe): need to work out exact wildcard handling
-		return specs.Platform{}, fmt.Errorf("%q: wildcards not yet supported: %w", specifier, errdefs.ErrInvalidArgument)
-	}
-
-	parts := strings.Split(specifier, "/")
-
-	for _, part := range parts {
-		if !specifierRe.MatchString(part) {
-			return specs.Platform{}, fmt.Errorf("%q is an invalid component of %q: platform specifier component must match %q: %w", part, specifier, specifierRe.String(), errdefs.ErrInvalidArgument)
-		}
-	}
-
-	var p specs.Platform
-	switch len(parts) {
-	case 1:
-		// in this case, we will test that the value might be an OS, then look
-		// it up. If it is not known, we'll treat it as an architecture. Since
-		// we have very little information about the platform here, we are
-		// going to be a little more strict if we don't know about the argument
-		// value.
-		p.OS = normalizeOS(parts[0])
-		if isKnownOS(p.OS) {
-			// picks a default architecture
-			p.Architecture = runtime.GOARCH
-			if p.Architecture == "arm" && cpuVariant() != "v7" {
-				p.Variant = cpuVariant()
-			}
-
-			return p, nil
-		}
-
-		p.Architecture, p.Variant = normalizeArch(parts[0], "")
-		if p.Architecture == "arm" && p.Variant == "v7" {
-			p.Variant = ""
-		}
-		if isKnownArch(p.Architecture) {
-			p.OS = runtime.GOOS
-			return p, nil
-		}
-
-		return specs.Platform{}, fmt.Errorf("%q: unknown operating system or architecture: %w", specifier, errdefs.ErrInvalidArgument)
-	case 2:
-		// In this case, we treat as a regular os/arch pair. We don't care
-		// about whether or not we know of the platform.
-		p.OS = normalizeOS(parts[0])
-		p.Architecture, p.Variant = normalizeArch(parts[1], "")
-		if p.Architecture == "arm" && p.Variant == "v7" {
-			p.Variant = ""
-		}
-
-		return p, nil
-	case 3:
-		// we have a fully specified variant, this is rare
-		p.OS = normalizeOS(parts[0])
-		p.Architecture, p.Variant = normalizeArch(parts[1], parts[2])
-		if p.Architecture == "arm64" && p.Variant == "" {
-			p.Variant = "v8"
-		}
-
-		return p, nil
-	}
-
-	return specs.Platform{}, fmt.Errorf("%q: cannot parse platform specifier: %w", specifier, errdefs.ErrInvalidArgument)
-}
-
-// MustParse is like Parses but panics if the specifier cannot be parsed.
-// Simplifies initialization of global variables.
-func MustParse(specifier string) specs.Platform {
-	p, err := Parse(specifier)
-	if err != nil {
-		panic("platform: Parse(" + strconv.Quote(specifier) + "): " + err.Error())
-	}
-	return p
-}
-
-// Format returns a string specifier from the provided platform specification.
-func Format(platform specs.Platform) string {
-	if platform.OS == "" {
-		return "unknown"
-	}
-
-	return path.Join(platform.OS, platform.Architecture, platform.Variant)
-}
-
-// Normalize validates and translate the platform to the canonical value.
-//
-// For example, if "Aarch64" is encountered, we change it to "arm64" or if
-// "x86_64" is encountered, it becomes "amd64".
-func Normalize(platform specs.Platform) specs.Platform {
-	platform.OS = normalizeOS(platform.OS)
-	platform.Architecture, platform.Variant = normalizeArch(platform.Architecture, platform.Variant)
-	return platform
-}

vendor/github.com/containerd/stargz-snapshotter/estargz/go.mod

@@ -1,10 +0,0 @@
-module github.com/containerd/stargz-snapshotter/estargz
-
-go 1.16
-
-require (
-	github.com/klauspost/compress v1.15.1
-	github.com/opencontainers/go-digest v1.0.0
-	github.com/vbatts/tar-split v0.11.2
-	golang.org/x/sync v0.0.0-20201207232520-09787c993a3a
-)

vendor/github.com/containerd/stargz-snapshotter/estargz/go.sum

@@ -1,20 +0,0 @@
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/klauspost/compress v1.15.1 h1:y9FcTHGyrebwfP0ZZqFiaxTaiDnUrGkJkI+f583BL1A=
-github.com/klauspost/compress v1.15.1/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
-github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
-github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
-github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/urfave/cli v1.22.4/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
-github.com/vbatts/tar-split v0.11.2 h1:Via6XqJr0hceW4wff3QRzD5gAk/tatMw/4ZA7cTlIME=
-github.com/vbatts/tar-split v0.11.2/go.mod h1:vV3ZuO2yWSVsz+pfFzDG/upWH1JhjOiEaWq6kXyQ3VI=
-golang.org/x/sync v0.0.0-20201207232520-09787c993a3a h1:DcqTD9SDLc+1P/r1EmRBwnVsrOwW+kk2vWf9n+1sGhs=
-golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

vendor/github.com/containers/image/v5/copy/blob.go

@@ -0,0 +1,172 @@
+package copy
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+
+	"github.com/containers/image/v5/internal/private"
+	compressiontypes "github.com/containers/image/v5/pkg/compression/types"
+	"github.com/containers/image/v5/types"
+	perrors "github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+// copyBlobFromStream copies a blob with srcInfo (with known Digest and Annotations and possibly known Size) from srcReader to dest,
+// perhaps sending a copy to an io.Writer if getOriginalLayerCopyWriter != nil,
+// perhaps (de/re/)compressing it if canModifyBlob,
+// and returns a complete blobInfo of the copied blob.
+func (ic *imageCopier) copyBlobFromStream(ctx context.Context, srcReader io.Reader, srcInfo types.BlobInfo,
+	getOriginalLayerCopyWriter func(decompressor compressiontypes.DecompressorFunc) io.Writer,
+	isConfig bool, toEncrypt bool, bar *progressBar, layerIndex int, emptyLayer bool) (types.BlobInfo, error) {
+	// The copying happens through a pipeline of connected io.Readers;
+	// that pipeline is built by updating stream.
+	// === Input: srcReader
+	stream := sourceStream{
+		reader: srcReader,
+		info:   srcInfo,
+	}
+
+	// === Process input through digestingReader to validate against the expected digest.
+	// Be paranoid; in case PutBlob somehow managed to ignore an error from digestingReader,
+	// use a separate validation failure indicator.
+	// Note that for this check we don't use the stronger "validationSucceeded" indicator, because
+	// dest.PutBlob may detect that the layer already exists, in which case we don't
+	// read stream to the end, and validation does not happen.
+	digestingReader, err := newDigestingReader(stream.reader, srcInfo.Digest)
+	if err != nil {
+		return types.BlobInfo{}, perrors.Wrapf(err, "preparing to verify blob %s", srcInfo.Digest)
+	}
+	stream.reader = digestingReader
+
+	// === Update progress bars
+	stream.reader = bar.ProxyReader(stream.reader)
+
+	// === Decrypt the stream, if required.
+	decryptionStep, err := ic.c.blobPipelineDecryptionStep(&stream, srcInfo)
+	if err != nil {
+		return types.BlobInfo{}, err
+	}
+
+	// === Detect compression of the input stream.
+	// This requires us to “peek ahead” into the stream to read the initial part, which requires us to chain through another io.Reader returned by DetectCompression.
+	detectedCompression, err := blobPipelineDetectCompressionStep(&stream, srcInfo)
+	if err != nil {
+		return types.BlobInfo{}, err
+	}
+
+	// === Send a copy of the original, uncompressed, stream, to a separate path if necessary.
+	var originalLayerReader io.Reader // DO NOT USE this other than to drain the input if no other consumer in the pipeline has done so.
+	if getOriginalLayerCopyWriter != nil {
+		stream.reader = io.TeeReader(stream.reader, getOriginalLayerCopyWriter(detectedCompression.decompressor))
+		originalLayerReader = stream.reader
+	}
+
+	// WARNING: If you are adding new reasons to change the blob, update also the OptimizeDestinationImageAlreadyExists
+	// short-circuit conditions
+	canModifyBlob := !isConfig && ic.cannotModifyManifestReason == ""
+	// === Deal with layer compression/decompression if necessary
+	compressionStep, err := ic.blobPipelineCompressionStep(&stream, canModifyBlob, srcInfo, detectedCompression)
+	if err != nil {
+		return types.BlobInfo{}, err
+	}
+	defer compressionStep.close()
+
+	// === Encrypt the stream for valid mediatypes if ociEncryptConfig provided
+	if decryptionStep.decrypting && toEncrypt {
+		// If nothing else, we can only set uploadedInfo.CryptoOperation to a single value.
+		// Before relaxing this, see the original pull request’s review if there are other reasons to reject this.
+		return types.BlobInfo{}, errors.New("Unable to support both decryption and encryption in the same copy")
+	}
+	encryptionStep, err := ic.c.blobPipelineEncryptionStep(&stream, toEncrypt, srcInfo, decryptionStep)
+	if err != nil {
+		return types.BlobInfo{}, err
+	}
+
+	// === Report progress using the ic.c.progress channel, if required.
+	if ic.c.progress != nil && ic.c.progressInterval > 0 {
+		progressReader := newProgressReader(
+			stream.reader,
+			ic.c.progress,
+			ic.c.progressInterval,
+			srcInfo,
+		)
+		defer progressReader.reportDone()
+		stream.reader = progressReader
+	}
+
+	// === Finally, send the layer stream to dest.
+	options := private.PutBlobOptions{
+		Cache:      ic.c.blobInfoCache,
+		IsConfig:   isConfig,
+		EmptyLayer: emptyLayer,
+	}
+	if !isConfig {
+		options.LayerIndex = &layerIndex
+	}
+	uploadedInfo, err := ic.c.dest.PutBlobWithOptions(ctx, &errorAnnotationReader{stream.reader}, stream.info, options)
+	if err != nil {
+		return types.BlobInfo{}, perrors.Wrap(err, "writing blob")
+	}
+
+	uploadedInfo.Annotations = stream.info.Annotations
+
+	compressionStep.updateCompressionEdits(&uploadedInfo.CompressionOperation, &uploadedInfo.CompressionAlgorithm, &uploadedInfo.Annotations)
+	decryptionStep.updateCryptoOperation(&uploadedInfo.CryptoOperation)
+	if err := encryptionStep.updateCryptoOperationAndAnnotations(&uploadedInfo.CryptoOperation, &uploadedInfo.Annotations); err != nil {
+		return types.BlobInfo{}, err
+	}
+
+	// This is fairly horrible: the writer from getOriginalLayerCopyWriter wants to consume
+	// all of the input (to compute DiffIDs), even if dest.PutBlob does not need it.
+	// So, read everything from originalLayerReader, which will cause the rest to be
+	// sent there if we are not already at EOF.
+	if getOriginalLayerCopyWriter != nil {
+		logrus.Debugf("Consuming rest of the original blob to satisfy getOriginalLayerCopyWriter")
+		_, err := io.Copy(io.Discard, originalLayerReader)
+		if err != nil {
+			return types.BlobInfo{}, perrors.Wrapf(err, "reading input blob %s", srcInfo.Digest)
+		}
+	}
+
+	if digestingReader.validationFailed { // Coverage: This should never happen.
+		return types.BlobInfo{}, fmt.Errorf("Internal error writing blob %s, digest verification failed but was ignored", srcInfo.Digest)
+	}
+	if stream.info.Digest != "" && uploadedInfo.Digest != stream.info.Digest {
+		return types.BlobInfo{}, fmt.Errorf("Internal error writing blob %s, blob with digest %s saved with digest %s", srcInfo.Digest, stream.info.Digest, uploadedInfo.Digest)
+	}
+	if digestingReader.validationSucceeded {
+		if err := compressionStep.recordValidatedDigestData(ic.c, uploadedInfo, srcInfo, encryptionStep, decryptionStep); err != nil {
+			return types.BlobInfo{}, err
+		}
+	}
+
+	return uploadedInfo, nil
+}
+
+// sourceStream encapsulates an input consumed by copyBlobFromStream, in progress of being built.
+// This allows handles of individual aspects to build the copy pipeline without _too much_
+// specific cooperation by the caller.
+//
+// We are currently very far from a generalized plug-and-play API for building/consuming the pipeline
+// without specific knowledge of various aspects in copyBlobFromStream; that may come one day.
+type sourceStream struct {
+	reader io.Reader
+	info   types.BlobInfo // corresponding to the data available in reader.
+}
+
+// errorAnnotationReader wraps the io.Reader passed to PutBlob for annotating the error happened during read.
+// These errors are reported as PutBlob errors, so we would otherwise misleadingly attribute them to the copy destination.
+type errorAnnotationReader struct {
+	reader io.Reader
+}
+
+// Read annotates the error happened during read
+func (r errorAnnotationReader) Read(b []byte) (n int, err error) {
+	n, err = r.reader.Read(b)
+	if err != io.EOF {
+		return n, perrors.Wrapf(err, "happened during read")
+	}
+	return n, err
+}

vendor/github.com/containers/image/v5/copy/compression.go

@@ -0,0 +1,322 @@
+package copy
+
+import (
+	"errors"
+	"fmt"
+	"io"
+
+	internalblobinfocache "github.com/containers/image/v5/internal/blobinfocache"
+	"github.com/containers/image/v5/pkg/compression"
+	compressiontypes "github.com/containers/image/v5/pkg/compression/types"
+	"github.com/containers/image/v5/types"
+	perrors "github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+// bpDetectCompressionStepData contains data that the copy pipeline needs about the “detect compression” step.
+type bpDetectCompressionStepData struct {
+	isCompressed      bool
+	format            compressiontypes.Algorithm        // Valid if isCompressed
+	decompressor      compressiontypes.DecompressorFunc // Valid if isCompressed
+	srcCompressorName string                            // Compressor name to possibly record in the blob info cache for the source blob.
+}
+
+// blobPipelineDetectCompressionStep updates *stream to detect its current compression format.
+// srcInfo is only used for error messages.
+// Returns data for other steps.
+func blobPipelineDetectCompressionStep(stream *sourceStream, srcInfo types.BlobInfo) (bpDetectCompressionStepData, error) {
+	// This requires us to “peek ahead” into the stream to read the initial part, which requires us to chain through another io.Reader returned by DetectCompression.
+	format, decompressor, reader, err := compression.DetectCompressionFormat(stream.reader) // We could skip this in some cases, but let's keep the code path uniform
+	if err != nil {
+		return bpDetectCompressionStepData{}, perrors.Wrapf(err, "reading blob %s", srcInfo.Digest)
+	}
+	stream.reader = reader
+
+	res := bpDetectCompressionStepData{
+		isCompressed: decompressor != nil,
+		format:       format,
+		decompressor: decompressor,
+	}
+	if res.isCompressed {
+		res.srcCompressorName = format.Name()
+	} else {
+		res.srcCompressorName = internalblobinfocache.Uncompressed
+	}
+
+	if expectedFormat, known := expectedCompressionFormats[stream.info.MediaType]; known && res.isCompressed && format.Name() != expectedFormat.Name() {
+		logrus.Debugf("blob %s with type %s should be compressed with %s, but compressor appears to be %s", srcInfo.Digest.String(), srcInfo.MediaType, expectedFormat.Name(), format.Name())
+	}
+	return res, nil
+}
+
+// bpCompressionStepData contains data that the copy pipeline needs about the compression step.
+type bpCompressionStepData struct {
+	operation              types.LayerCompression      // Operation to use for updating the blob metadata.
+	uploadedAlgorithm      *compressiontypes.Algorithm // An algorithm parameter for the compressionOperation edits.
+	uploadedAnnotations    map[string]string           // Annotations that should be set on the uploaded blob. WARNING: This is only set after the srcStream.reader is fully consumed.
+	srcCompressorName      string                      // Compressor name to record in the blob info cache for the source blob.
+	uploadedCompressorName string                      // Compressor name to record in the blob info cache for the uploaded blob.
+	closers                []io.Closer                 // Objects to close after the upload is done, if any.
+}
+
+// blobPipelineCompressionStep updates *stream to compress and/or decompress it.
+// srcInfo is primarily used for error messages.
+// Returns data for other steps; the caller should eventually call updateCompressionEdits and perhaps recordValidatedBlobData,
+// and must eventually call close.
+func (ic *imageCopier) blobPipelineCompressionStep(stream *sourceStream, canModifyBlob bool, srcInfo types.BlobInfo,
+	detected bpDetectCompressionStepData) (*bpCompressionStepData, error) {
+	// WARNING: If you are adding new reasons to change the blob, update also the OptimizeDestinationImageAlreadyExists
+	// short-circuit conditions
+	layerCompressionChangeSupported := ic.src.CanChangeLayerCompression(stream.info.MediaType)
+	if !layerCompressionChangeSupported {
+		logrus.Debugf("Compression change for blob %s (%q) not supported", srcInfo.Digest, stream.info.MediaType)
+	}
+	if canModifyBlob && layerCompressionChangeSupported {
+		for _, fn := range []func(*sourceStream, bpDetectCompressionStepData) (*bpCompressionStepData, error){
+			ic.bpcPreserveEncrypted,
+			ic.bpcCompressUncompressed,
+			ic.bpcRecompressCompressed,
+			ic.bpcDecompressCompressed,
+		} {
+			res, err := fn(stream, detected)
+			if err != nil {
+				return nil, err
+			}
+			if res != nil {
+				return res, nil
+			}
+		}
+	}
+	return ic.bpcPreserveOriginal(stream, detected, layerCompressionChangeSupported), nil
+}
+
+// bpcPreserveEncrypted checks if the input is encrypted, and returns a *bpCompressionStepData if so.
+func (ic *imageCopier) bpcPreserveEncrypted(stream *sourceStream, _ bpDetectCompressionStepData) (*bpCompressionStepData, error) {
+	if isOciEncrypted(stream.info.MediaType) {
+		logrus.Debugf("Using original blob without modification for encrypted blob")
+		// PreserveOriginal due to any compression not being able to be done on an encrypted blob unless decrypted
+		return &bpCompressionStepData{
+			operation:              types.PreserveOriginal,
+			uploadedAlgorithm:      nil,
+			srcCompressorName:      internalblobinfocache.UnknownCompression,
+			uploadedCompressorName: internalblobinfocache.UnknownCompression,
+		}, nil
+	}
+	return nil, nil
+}
+
+// bpcCompressUncompressed checks if we should be compressing an uncompressed input, and returns a *bpCompressionStepData if so.
+func (ic *imageCopier) bpcCompressUncompressed(stream *sourceStream, detected bpDetectCompressionStepData) (*bpCompressionStepData, error) {
+	if ic.c.dest.DesiredLayerCompression() == types.Compress && !detected.isCompressed {
+		logrus.Debugf("Compressing blob on the fly")
+		var uploadedAlgorithm *compressiontypes.Algorithm
+		if ic.c.compressionFormat != nil {
+			uploadedAlgorithm = ic.c.compressionFormat
+		} else {
+			uploadedAlgorithm = defaultCompressionFormat
+		}
+
+		reader, annotations := ic.c.compressedStream(stream.reader, *uploadedAlgorithm)
+		// Note: reader must be closed on all return paths.
+		stream.reader = reader
+		stream.info = types.BlobInfo{ // FIXME? Should we preserve more data in src.info?
+			Digest: "",
+			Size:   -1,
+		}
+		return &bpCompressionStepData{
+			operation:              types.Compress,
+			uploadedAlgorithm:      uploadedAlgorithm,
+			uploadedAnnotations:    annotations,
+			srcCompressorName:      detected.srcCompressorName,
+			uploadedCompressorName: uploadedAlgorithm.Name(),
+			closers:                []io.Closer{reader},
+		}, nil
+	}
+	return nil, nil
+}
+
+// bpcRecompressCompressed checks if we should be recompressing a compressed input to another format, and returns a *bpCompressionStepData if so.
+func (ic *imageCopier) bpcRecompressCompressed(stream *sourceStream, detected bpDetectCompressionStepData) (*bpCompressionStepData, error) {
+	if ic.c.dest.DesiredLayerCompression() == types.Compress && detected.isCompressed &&
+		ic.c.compressionFormat != nil && ic.c.compressionFormat.Name() != detected.format.Name() {
+		// When the blob is compressed, but the desired format is different, it first needs to be decompressed and finally
+		// re-compressed using the desired format.
+		logrus.Debugf("Blob will be converted")
+
+		decompressed, err := detected.decompressor(stream.reader)
+		if err != nil {
+			return nil, err
+		}
+		succeeded := false
+		defer func() {
+			if !succeeded {
+				decompressed.Close()
+			}
+		}()
+
+		recompressed, annotations := ic.c.compressedStream(decompressed, *ic.c.compressionFormat)
+		// Note: recompressed must be closed on all return paths.
+		stream.reader = recompressed
+		stream.info = types.BlobInfo{ // FIXME? Should we preserve more data in src.info?
+			Digest: "",
+			Size:   -1,
+		}
+		succeeded = true
+		return &bpCompressionStepData{
+			operation:              types.PreserveOriginal,
+			uploadedAlgorithm:      ic.c.compressionFormat,
+			uploadedAnnotations:    annotations,
+			srcCompressorName:      detected.srcCompressorName,
+			uploadedCompressorName: ic.c.compressionFormat.Name(),
+			closers:                []io.Closer{decompressed, recompressed},
+		}, nil
+	}
+	return nil, nil
+}
+
+// bpcDecompressCompressed checks if we should be decompressing a compressed input, and returns a *bpCompressionStepData if so.
+func (ic *imageCopier) bpcDecompressCompressed(stream *sourceStream, detected bpDetectCompressionStepData) (*bpCompressionStepData, error) {
+	if ic.c.dest.DesiredLayerCompression() == types.Decompress && detected.isCompressed {
+		logrus.Debugf("Blob will be decompressed")
+		s, err := detected.decompressor(stream.reader)
+		if err != nil {
+			return nil, err
+		}
+		// Note: s must be closed on all return paths.
+		stream.reader = s
+		stream.info = types.BlobInfo{ // FIXME? Should we preserve more data in src.info?
+			Digest: "",
+			Size:   -1,
+		}
+		return &bpCompressionStepData{
+			operation:              types.Decompress,
+			uploadedAlgorithm:      nil,
+			srcCompressorName:      detected.srcCompressorName,
+			uploadedCompressorName: internalblobinfocache.Uncompressed,
+			closers:                []io.Closer{s},
+		}, nil
+	}
+	return nil, nil
+}
+
+// bpcPreserveOriginal returns a *bpCompressionStepData for not changing the original blob.
+func (ic *imageCopier) bpcPreserveOriginal(stream *sourceStream, detected bpDetectCompressionStepData,
+	layerCompressionChangeSupported bool) *bpCompressionStepData {
+	logrus.Debugf("Using original blob without modification")
+	// Remember if the original blob was compressed, and if so how, so that if
+	// LayerInfosForCopy() returned something that differs from what was in the
+	// source's manifest, and UpdatedImage() needs to call UpdateLayerInfos(),
+	// it will be able to correctly derive the MediaType for the copied blob.
+	//
+	// But don’t touch blobs in objects where we can’t change compression,
+	// so that src.UpdatedImage() doesn’t fail; assume that for such blobs
+	// LayerInfosForCopy() should not be making any changes in the first place.
+	var algorithm *compressiontypes.Algorithm
+	if layerCompressionChangeSupported && detected.isCompressed {
+		algorithm = &detected.format
+	} else {
+		algorithm = nil
+	}
+	return &bpCompressionStepData{
+		operation:              types.PreserveOriginal,
+		uploadedAlgorithm:      algorithm,
+		srcCompressorName:      detected.srcCompressorName,
+		uploadedCompressorName: detected.srcCompressorName,
+	}
+}
+
+// updateCompressionEdits sets *operation, *algorithm and updates *annotations, if necessary.
+func (d *bpCompressionStepData) updateCompressionEdits(operation *types.LayerCompression, algorithm **compressiontypes.Algorithm, annotations *map[string]string) {
+	*operation = d.operation
+	// If we can modify the layer's blob, set the desired algorithm for it to be set in the manifest.
+	*algorithm = d.uploadedAlgorithm
+	if *annotations == nil {
+		*annotations = map[string]string{}
+	}
+	for k, v := range d.uploadedAnnotations {
+		(*annotations)[k] = v
+	}
+}
+
+// recordValidatedBlobData updates b.blobInfoCache with data about the created uploadedInfo adnd the original srcInfo.
+// This must ONLY be called if all data has been validated by OUR code, and is not comming from third parties.
+func (d *bpCompressionStepData) recordValidatedDigestData(c *copier, uploadedInfo types.BlobInfo, srcInfo types.BlobInfo,
+	encryptionStep *bpEncryptionStepData, decryptionStep *bpDecryptionStepData) error {
+	// Don’t record any associations that involve encrypted data. This is a bit crude,
+	// some blob substitutions (replacing pulls of encrypted data with local reuse of known decryption outcomes)
+	// might be safe, but it’s not trivially obvious, so let’s be conservative for now.
+	// This crude approach also means we don’t need to record whether a blob is encrypted
+	// in the blob info cache (which would probably be necessary for any more complex logic),
+	// and the simplicity is attractive.
+	if !encryptionStep.encrypting && !decryptionStep.decrypting {
+		// If d.operation != types.PreserveOriginal, we now have two reliable digest values:
+		// srcinfo.Digest describes the pre-d.operation input, verified by digestingReader
+		// uploadedInfo.Digest describes the post-d.operation output, computed by PutBlob
+		// (because stream.info.Digest == "", this must have been computed afresh).
+		switch d.operation {
+		case types.PreserveOriginal:
+			break // Do nothing, we have only one digest and we might not have even verified it.
+		case types.Compress:
+			c.blobInfoCache.RecordDigestUncompressedPair(uploadedInfo.Digest, srcInfo.Digest)
+		case types.Decompress:
+			c.blobInfoCache.RecordDigestUncompressedPair(srcInfo.Digest, uploadedInfo.Digest)
+		default:
+			return fmt.Errorf("Internal error: Unexpected d.operation value %#v", d.operation)
+		}
+	}
+	if d.uploadedCompressorName != "" && d.uploadedCompressorName != internalblobinfocache.UnknownCompression {
+		c.blobInfoCache.RecordDigestCompressorName(uploadedInfo.Digest, d.uploadedCompressorName)
+	}
+	if srcInfo.Digest != "" && d.srcCompressorName != "" && d.srcCompressorName != internalblobinfocache.UnknownCompression {
+		c.blobInfoCache.RecordDigestCompressorName(srcInfo.Digest, d.srcCompressorName)
+	}
+	return nil
+}
+
+// close closes objects that carry state throughout the compression/decompression operation.
+func (d *bpCompressionStepData) close() {
+	for _, c := range d.closers {
+		c.Close()
+	}
+}
+
+// doCompression reads all input from src and writes its compressed equivalent to dest.
+func doCompression(dest io.Writer, src io.Reader, metadata map[string]string, compressionFormat compressiontypes.Algorithm, compressionLevel *int) error {
+	compressor, err := compression.CompressStreamWithMetadata(dest, metadata, compressionFormat, compressionLevel)
+	if err != nil {
+		return err
+	}
+
+	buf := make([]byte, compressionBufferSize)
+
+	_, err = io.CopyBuffer(compressor, src, buf) // Sets err to nil, i.e. causes dest.Close()
+	if err != nil {
+		compressor.Close()
+		return err
+	}
+
+	return compressor.Close()
+}
+
+// compressGoroutine reads all input from src and writes its compressed equivalent to dest.
+func (c *copier) compressGoroutine(dest *io.PipeWriter, src io.Reader, metadata map[string]string, compressionFormat compressiontypes.Algorithm) {
+	err := errors.New("Internal error: unexpected panic in compressGoroutine")
+	defer func() { // Note that this is not the same as {defer dest.CloseWithError(err)}; we need err to be evaluated lazily.
+		_ = dest.CloseWithError(err) // CloseWithError(nil) is equivalent to Close(), always returns nil
+	}()
+
+	err = doCompression(dest, src, metadata, compressionFormat, c.compressionLevel)
+}
+
+// compressedStream returns a stream the input reader compressed using format, and a metadata map.
+// The caller must close the returned reader.
+// AFTER the stream is consumed, metadata will be updated with annotations to use on the data.
+func (c *copier) compressedStream(reader io.Reader, algorithm compressiontypes.Algorithm) (io.ReadCloser, map[string]string) {
+	pipeReader, pipeWriter := io.Pipe()
+	annotations := map[string]string{}
+	// If this fails while writing data, it will do pipeWriter.CloseWithError(); if it fails otherwise,
+	// e.g. because we have exited and due to pipeReader.Close() above further writing to the pipe has failed,
+	// we don’t care.
+	go c.compressGoroutine(pipeWriter, reader, annotations, algorithm) // Closes pipeWriter
+	return pipeReader, annotations
+}

vendor/github.com/containers/image/v5/copy/digesting_reader.go

@@ -1,11 +1,12 @@
 package copy
 
 import (
+	"fmt"
 	"hash"
 	"io"
 
 	digest "github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 type digestingReader struct {
@@ -23,11 +24,11 @@ type digestingReader struct {
 func newDigestingReader(source io.Reader, expectedDigest digest.Digest) (*digestingReader, error) {
 	var digester digest.Digester
 	if err := expectedDigest.Validate(); err != nil {
-		return nil, errors.Errorf("Invalid digest specification %s", expectedDigest)
+		return nil, fmt.Errorf("Invalid digest specification %s", expectedDigest)
 	}
 	digestAlgorithm := expectedDigest.Algorithm()
 	if !digestAlgorithm.Available() {
-		return nil, errors.Errorf("Invalid digest specification %s: unsupported digest algorithm %s", expectedDigest, digestAlgorithm)
+		return nil, fmt.Errorf("Invalid digest specification %s: unsupported digest algorithm %s", expectedDigest, digestAlgorithm)
 	}
 	digester = digestAlgorithm.Digester()
 
@@ -47,14 +48,14 @@ func (d *digestingReader) Read(p []byte) (int, error) {
 			// Coverage: This should not happen, the hash.Hash interface requires
 			// d.digest.Write to never return an error, and the io.Writer interface
 			// requires n2 == len(input) if no error is returned.
-			return 0, errors.Wrapf(err, "updating digest during verification: %d vs. %d", n2, n)
+			return 0, perrors.Wrapf(err, "updating digest during verification: %d vs. %d", n2, n)
 		}
 	}
 	if err == io.EOF {
 		actualDigest := d.digester.Digest()
 		if actualDigest != d.expectedDigest {
 			d.validationFailed = true
-			return 0, errors.Errorf("Digest did not match, expected %s, got %s", d.expectedDigest, actualDigest)
+			return 0, fmt.Errorf("Digest did not match, expected %s, got %s", d.expectedDigest, actualDigest)
 		}
 		d.validationSucceeded = true
 	}

vendor/github.com/containers/image/v5/copy/encrypt.go

@@ -1,24 +0,0 @@
-package copy
-
-import (
-	"strings"
-
-	"github.com/containers/image/v5/types"
-)
-
-// isOciEncrypted returns a bool indicating if a mediatype is encrypted
-// This function will be moved to be part of OCI spec when adopted.
-func isOciEncrypted(mediatype string) bool {
-	return strings.HasSuffix(mediatype, "+encrypted")
-}
-
-// isEncrypted checks if an image is encrypted
-func isEncrypted(i types.Image) bool {
-	layers := i.LayerInfos()
-	for _, l := range layers {
-		if isOciEncrypted(l.MediaType) {
-			return true
-		}
-	}
-	return false
-}

vendor/github.com/containers/image/v5/copy/encryption.go

@@ -0,0 +1,129 @@
+package copy
+
+import (
+	"strings"
+
+	"github.com/containers/image/v5/types"
+	"github.com/containers/ocicrypt"
+	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
+	perrors "github.com/pkg/errors"
+)
+
+// isOciEncrypted returns a bool indicating if a mediatype is encrypted
+// This function will be moved to be part of OCI spec when adopted.
+func isOciEncrypted(mediatype string) bool {
+	return strings.HasSuffix(mediatype, "+encrypted")
+}
+
+// isEncrypted checks if an image is encrypted
+func isEncrypted(i types.Image) bool {
+	layers := i.LayerInfos()
+	for _, l := range layers {
+		if isOciEncrypted(l.MediaType) {
+			return true
+		}
+	}
+	return false
+}
+
+// bpDecryptionStepData contains data that the copy pipeline needs about the decryption step.
+type bpDecryptionStepData struct {
+	decrypting bool // We are actually decrypting the stream
+}
+
+// blobPipelineDecryptionStep updates *stream to decrypt if, it necessary.
+// srcInfo is only used for error messages.
+// Returns data for other steps; the caller should eventually use updateCryptoOperation.
+func (c *copier) blobPipelineDecryptionStep(stream *sourceStream, srcInfo types.BlobInfo) (*bpDecryptionStepData, error) {
+	if isOciEncrypted(stream.info.MediaType) && c.ociDecryptConfig != nil {
+		desc := imgspecv1.Descriptor{
+			Annotations: stream.info.Annotations,
+		}
+		reader, decryptedDigest, err := ocicrypt.DecryptLayer(c.ociDecryptConfig, stream.reader, desc, false)
+		if err != nil {
+			return nil, perrors.Wrapf(err, "decrypting layer %s", srcInfo.Digest)
+		}
+
+		stream.reader = reader
+		stream.info.Digest = decryptedDigest
+		stream.info.Size = -1
+		for k := range stream.info.Annotations {
+			if strings.HasPrefix(k, "org.opencontainers.image.enc") {
+				delete(stream.info.Annotations, k)
+			}
+		}
+		return &bpDecryptionStepData{
+			decrypting: true,
+		}, nil
+	}
+	return &bpDecryptionStepData{
+		decrypting: false,
+	}, nil
+}
+
+// updateCryptoOperation sets *operation, if necessary.
+func (d *bpDecryptionStepData) updateCryptoOperation(operation *types.LayerCrypto) {
+	if d.decrypting {
+		*operation = types.Decrypt
+	}
+}
+
+// bpdData contains data that the copy pipeline needs about the encryption step.
+type bpEncryptionStepData struct {
+	encrypting bool // We are actually encrypting the stream
+	finalizer  ocicrypt.EncryptLayerFinalizer
+}
+
+// blobPipelineEncryptionStep updates *stream to encrypt if, it required by toEncrypt.
+// srcInfo is primarily used for error messages.
+// Returns data for other steps; the caller should eventually call updateCryptoOperationAndAnnotations.
+func (c *copier) blobPipelineEncryptionStep(stream *sourceStream, toEncrypt bool, srcInfo types.BlobInfo,
+	decryptionStep *bpDecryptionStepData) (*bpEncryptionStepData, error) {
+	if toEncrypt && !isOciEncrypted(srcInfo.MediaType) && c.ociEncryptConfig != nil {
+		var annotations map[string]string
+		if !decryptionStep.decrypting {
+			annotations = srcInfo.Annotations
+		}
+		desc := imgspecv1.Descriptor{
+			MediaType:   srcInfo.MediaType,
+			Digest:      srcInfo.Digest,
+			Size:        srcInfo.Size,
+			Annotations: annotations,
+		}
+		reader, finalizer, err := ocicrypt.EncryptLayer(c.ociEncryptConfig, stream.reader, desc)
+		if err != nil {
+			return nil, perrors.Wrapf(err, "encrypting blob %s", srcInfo.Digest)
+		}
+
+		stream.reader = reader
+		stream.info.Digest = ""
+		stream.info.Size = -1
+		return &bpEncryptionStepData{
+			encrypting: true,
+			finalizer:  finalizer,
+		}, nil
+	}
+	return &bpEncryptionStepData{
+		encrypting: false,
+	}, nil
+}
+
+// updateCryptoOperationAndAnnotations sets *operation and updates *annotations, if necessary.
+func (d *bpEncryptionStepData) updateCryptoOperationAndAnnotations(operation *types.LayerCrypto, annotations *map[string]string) error {
+	if !d.encrypting {
+		return nil
+	}
+
+	encryptAnnotations, err := d.finalizer()
+	if err != nil {
+		return perrors.Wrap(err, "Unable to finalize encryption")
+	}
+	*operation = types.Encrypt
+	if *annotations == nil {
+		*annotations = map[string]string{}
+	}
+	for k, v := range encryptAnnotations {
+		(*annotations)[k] = v
+	}
+	return nil
+}

vendor/github.com/containers/image/v5/copy/manifest.go

@@ -2,11 +2,12 @@ package copy
 
 import (
 	"context"
+	"errors"
+	"fmt"
 	"strings"
 
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -38,31 +39,50 @@ func (os *orderedSet) append(s string) {
 	}
 }
 
-// determineManifestConversion updates ic.manifestUpdates to convert manifest to a supported MIME type, if necessary and ic.canModifyManifest.
-// Note that the conversion will only happen later, through ic.src.UpdatedImage
-// Returns the preferred manifest MIME type (whether we are converting to it or using it unmodified),
-// and a list of other possible alternatives, in order.
-func (ic *imageCopier) determineManifestConversion(ctx context.Context, destSupportedManifestMIMETypes []string, forceManifestMIMEType string, requiresOciEncryption bool) (string, []string, error) {
-	_, srcType, err := ic.src.Manifest(ctx)
-	if err != nil { // This should have been cached?!
-		return "", nil, errors.Wrap(err, "reading manifest")
-	}
+// determineManifestConversionInputs contains the inputs for determineManifestConversion.
+type determineManifestConversionInputs struct {
+	srcMIMEType string // MIME type of the input manifest
+
+	destSupportedManifestMIMETypes []string // MIME types supported by the destination, per types.ImageDestination.SupportedManifestMIMETypes()
+
+	forceManifestMIMEType      string // User’s choice of forced manifest MIME type
+	requiresOCIEncryption      bool   // Restrict to manifest formats that can support OCI encryption
+	cannotModifyManifestReason string // The reason the manifest cannot be modified, or an empty string if it can
+}
+
+// manifestConversionPlan contains the decisions made by determineManifestConversion.
+type manifestConversionPlan struct {
+	// The preferred manifest MIME type (whether we are converting to it or using it unmodified).
+	// We compute this only to show it in error messages; without having to add this context
+	// in an error message, we would be happy enough to know only that no conversion is needed.
+	preferredMIMEType                string
+	preferredMIMETypeNeedsConversion bool     // True if using preferredMIMEType requires a conversion step.
+	otherMIMETypeCandidates          []string // Other possible alternatives, in order
+}
+
+// determineManifestConversion returns a plan for what formats, and possibly conversions, to use based on in.
+func determineManifestConversion(in determineManifestConversionInputs) (manifestConversionPlan, error) {
+	srcType := in.srcMIMEType
 	normalizedSrcType := manifest.NormalizedMIMEType(srcType)
 	if srcType != normalizedSrcType {
 		logrus.Debugf("Source manifest MIME type %s, treating it as %s", srcType, normalizedSrcType)
 		srcType = normalizedSrcType
 	}
 
-	if forceManifestMIMEType != "" {
-		destSupportedManifestMIMETypes = []string{forceManifestMIMEType}
+	destSupportedManifestMIMETypes := in.destSupportedManifestMIMETypes
+	if in.forceManifestMIMEType != "" {
+		destSupportedManifestMIMETypes = []string{in.forceManifestMIMEType}
 	}
 
-	if len(destSupportedManifestMIMETypes) == 0 && (!requiresOciEncryption || manifest.MIMETypeSupportsEncryption(srcType)) {
-		return srcType, []string{}, nil // Anything goes; just use the original as is, do not try any conversions.
+	if len(destSupportedManifestMIMETypes) == 0 && (!in.requiresOCIEncryption || manifest.MIMETypeSupportsEncryption(srcType)) {
+		return manifestConversionPlan{ // Anything goes; just use the original as is, do not try any conversions.
+			preferredMIMEType:       srcType,
+			otherMIMETypeCandidates: []string{},
+		}, nil
 	}
 	supportedByDest := map[string]struct{}{}
 	for _, t := range destSupportedManifestMIMETypes {
-		if !requiresOciEncryption || manifest.MIMETypeSupportsEncryption(t) {
+		if !in.requiresOCIEncryption || manifest.MIMETypeSupportsEncryption(t) {
 			supportedByDest[t] = struct{}{}
 		}
 	}
@@ -79,13 +99,16 @@ func (ic *imageCopier) determineManifestConversion(ctx context.Context, destSupp
 	if _, ok := supportedByDest[srcType]; ok {
 		prioritizedTypes.append(srcType)
 	}
-	if ic.cannotModifyManifestReason != "" {
+	if in.cannotModifyManifestReason != "" {
 		// We could also drop this check and have the caller
 		// make the choice; it is already doing that to an extent, to improve error
 		// messages.  But it is nice to hide the “if we can't modify, do no conversion”
 		// special case in here; the caller can then worry (or not) only about a good UI.
 		logrus.Debugf("We can't modify the manifest, hoping for the best...")
-		return srcType, []string{}, nil // Take our chances - FIXME? Or should we fail without trying?
+		return manifestConversionPlan{ // Take our chances - FIXME? Or should we fail without trying?
+			preferredMIMEType:       srcType,
+			otherMIMETypeCandidates: []string{},
+		}, nil
 	}
 
 	// Then use our list of preferred types.
@@ -102,15 +125,17 @@ func (ic *imageCopier) determineManifestConversion(ctx context.Context, destSupp
 
 	logrus.Debugf("Manifest has MIME type %s, ordered candidate list [%s]", srcType, strings.Join(prioritizedTypes.list, ", "))
 	if len(prioritizedTypes.list) == 0 { // Coverage: destSupportedManifestMIMETypes is not empty (or we would have exited in the “Anything goes” case above), so this should never happen.
-		return "", nil, errors.New("Internal error: no candidate MIME types")
+		return manifestConversionPlan{}, errors.New("Internal error: no candidate MIME types")
 	}
-	preferredType := prioritizedTypes.list[0]
-	if preferredType != srcType {
-		ic.manifestUpdates.ManifestMIMEType = preferredType
-	} else {
+	res := manifestConversionPlan{
+		preferredMIMEType:       prioritizedTypes.list[0],
+		otherMIMETypeCandidates: prioritizedTypes.list[1:],
+	}
+	res.preferredMIMETypeNeedsConversion = res.preferredMIMEType != srcType
+	if !res.preferredMIMETypeNeedsConversion {
 		logrus.Debugf("... will first try using the original manifest unmodified")
 	}
-	return preferredType, prioritizedTypes.list[1:], nil
+	return res, nil
 }
 
 // isMultiImage returns true if img is a list of images
@@ -156,7 +181,7 @@ func (c *copier) determineListConversion(currentListMIMEType string, destSupport
 
 	logrus.Debugf("Manifest list has MIME type %s, ordered candidate list [%s]", currentListMIMEType, strings.Join(destSupportedMIMETypes, ", "))
 	if len(prioritizedTypes.list) == 0 {
-		return "", nil, errors.Errorf("destination does not support any supported manifest list types (%v)", manifest.SupportedListMIMETypes)
+		return "", nil, fmt.Errorf("destination does not support any supported manifest list types (%v)", manifest.SupportedListMIMETypes)
 	}
 	selectedType := prioritizedTypes.list[0]
 	otherSupportedTypes := prioritizedTypes.list[1:]

vendor/github.com/containers/image/v5/copy/sign.go

@@ -1,38 +1,63 @@
 package copy
 
 import (
+	"fmt"
+
 	"github.com/containers/image/v5/docker/reference"
+	internalsig "github.com/containers/image/v5/internal/signature"
 	"github.com/containers/image/v5/signature"
+	"github.com/containers/image/v5/signature/sigstore"
 	"github.com/containers/image/v5/transports"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 // createSignature creates a new signature of manifest using keyIdentity.
-func (c *copier) createSignature(manifest []byte, keyIdentity string, passphrase string, identity reference.Named) ([]byte, error) {
+func (c *copier) createSignature(manifest []byte, keyIdentity string, passphrase string, identity reference.Named) (internalsig.Signature, error) {
 	mech, err := signature.NewGPGSigningMechanism()
 	if err != nil {
-		return nil, errors.Wrap(err, "initializing GPG")
+		return nil, perrors.Wrap(err, "initializing GPG")
 	}
 	defer mech.Close()
 	if err := mech.SupportsSigning(); err != nil {
-		return nil, errors.Wrap(err, "Signing not supported")
+		return nil, perrors.Wrap(err, "Signing not supported")
 	}
 
 	if identity != nil {
 		if reference.IsNameOnly(identity) {
-			return nil, errors.Errorf("Sign identity must be a fully specified reference %s", identity)
+			return nil, fmt.Errorf("Sign identity must be a fully specified reference %s", identity)
 		}
 	} else {
 		identity = c.dest.Reference().DockerReference()
 		if identity == nil {
-			return nil, errors.Errorf("Cannot determine canonical Docker reference for destination %s", transports.ImageName(c.dest.Reference()))
+			return nil, fmt.Errorf("Cannot determine canonical Docker reference for destination %s", transports.ImageName(c.dest.Reference()))
 		}
 	}
 
-	c.Printf("Signing manifest\n")
+	c.Printf("Signing manifest using simple signing\n")
 	newSig, err := signature.SignDockerManifestWithOptions(manifest, identity.String(), mech, keyIdentity, &signature.SignOptions{Passphrase: passphrase})
 	if err != nil {
-		return nil, errors.Wrap(err, "creating signature")
+		return nil, perrors.Wrap(err, "creating signature")
+	}
+	return internalsig.SimpleSigningFromBlob(newSig), nil
+}
+
+// createSigstoreSignature creates a new sigstore signature of manifest using privateKeyFile and identity.
+func (c *copier) createSigstoreSignature(manifest []byte, privateKeyFile string, passphrase []byte, identity reference.Named) (internalsig.Signature, error) {
+	if identity != nil {
+		if reference.IsNameOnly(identity) {
+			return nil, fmt.Errorf("Sign identity must be a fully specified reference %s", identity.String())
+		}
+	} else {
+		identity = c.dest.Reference().DockerReference()
+		if identity == nil {
+			return nil, fmt.Errorf("Cannot determine canonical Docker reference for destination %s", transports.ImageName(c.dest.Reference()))
+		}
+	}
+
+	c.Printf("Signing manifest using a sigstore signature\n")
+	newSig, err := sigstore.SignDockerManifestWithPrivateKeyFileUnstable(manifest, identity, privateKeyFile, passphrase)
+	if err != nil {
+		return nil, fmt.Errorf("creating signature: %w", err)
 	}
 	return newSig, nil
 }

vendor/github.com/containers/image/v5/directory/directory_dest.go

@@ -2,15 +2,21 @@ package directory
 
 import (
 	"context"
+	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
 	"runtime"
 
+	"github.com/containers/image/v5/internal/imagedestination/impl"
+	"github.com/containers/image/v5/internal/imagedestination/stubs"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/internal/putblobdigest"
+	"github.com/containers/image/v5/internal/signature"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -21,47 +27,50 @@ const version = "Directory Transport Version: 1.1\n"
 var ErrNotContainerImageDir = errors.New("not a containers image directory, don't want to overwrite important data")
 
 type dirImageDestination struct {
-	ref                     dirReference
-	desiredLayerCompression types.LayerCompression
+	impl.Compat
+	impl.PropertyMethodsInitialize
+	stubs.NoPutBlobPartialInitialize
+	stubs.AlwaysSupportsSignatures
+
+	ref dirReference
 }
 
 // newImageDestination returns an ImageDestination for writing to a directory.
-func newImageDestination(sys *types.SystemContext, ref dirReference) (types.ImageDestination, error) {
+func newImageDestination(sys *types.SystemContext, ref dirReference) (private.ImageDestination, error) {
 	desiredLayerCompression := types.PreserveOriginal
 	if sys != nil {
 		if sys.DirForceCompress {
 			desiredLayerCompression = types.Compress
 
 			if sys.DirForceDecompress {
-				return nil, errors.Errorf("Cannot compress and decompress at the same time")
+				return nil, fmt.Errorf("Cannot compress and decompress at the same time")
 			}
 		}
 		if sys.DirForceDecompress {
 			desiredLayerCompression = types.Decompress
 		}
 	}
-	d := &dirImageDestination{ref: ref, desiredLayerCompression: desiredLayerCompression}
 
 	// If directory exists check if it is empty
 	// if not empty, check whether the contents match that of a container image directory and overwrite the contents
 	// if the contents don't match throw an error
-	dirExists, err := pathExists(d.ref.resolvedPath)
+	dirExists, err := pathExists(ref.resolvedPath)
 	if err != nil {
-		return nil, errors.Wrapf(err, "checking for path %q", d.ref.resolvedPath)
+		return nil, perrors.Wrapf(err, "checking for path %q", ref.resolvedPath)
 	}
 	if dirExists {
-		isEmpty, err := isDirEmpty(d.ref.resolvedPath)
+		isEmpty, err := isDirEmpty(ref.resolvedPath)
 		if err != nil {
 			return nil, err
 		}
 
 		if !isEmpty {
-			versionExists, err := pathExists(d.ref.versionPath())
+			versionExists, err := pathExists(ref.versionPath())
 			if err != nil {
-				return nil, errors.Wrapf(err, "checking if path exists %q", d.ref.versionPath())
+				return nil, perrors.Wrapf(err, "checking if path exists %q", ref.versionPath())
 			}
 			if versionExists {
-				contents, err := os.ReadFile(d.ref.versionPath())
+				contents, err := os.ReadFile(ref.versionPath())
 				if err != nil {
 					return nil, err
 				}
@@ -73,22 +82,37 @@ func newImageDestination(sys *types.SystemContext, ref dirReference) (types.Imag
 				return nil, ErrNotContainerImageDir
 			}
 			// delete directory contents so that only one image is in the directory at a time
-			if err = removeDirContents(d.ref.resolvedPath); err != nil {
-				return nil, errors.Wrapf(err, "erasing contents in %q", d.ref.resolvedPath)
+			if err = removeDirContents(ref.resolvedPath); err != nil {
+				return nil, perrors.Wrapf(err, "erasing contents in %q", ref.resolvedPath)
 			}
-			logrus.Debugf("overwriting existing container image directory %q", d.ref.resolvedPath)
+			logrus.Debugf("overwriting existing container image directory %q", ref.resolvedPath)
 		}
 	} else {
 		// create directory if it doesn't exist
-		if err := os.MkdirAll(d.ref.resolvedPath, 0755); err != nil {
-			return nil, errors.Wrapf(err, "unable to create directory %q", d.ref.resolvedPath)
+		if err := os.MkdirAll(ref.resolvedPath, 0755); err != nil {
+			return nil, perrors.Wrapf(err, "unable to create directory %q", ref.resolvedPath)
 		}
 	}
 	// create version file
-	err = os.WriteFile(d.ref.versionPath(), []byte(version), 0644)
+	err = os.WriteFile(ref.versionPath(), []byte(version), 0644)
 	if err != nil {
-		return nil, errors.Wrapf(err, "creating version file %q", d.ref.versionPath())
+		return nil, perrors.Wrapf(err, "creating version file %q", ref.versionPath())
 	}
+
+	d := &dirImageDestination{
+		PropertyMethodsInitialize: impl.PropertyMethods(impl.Properties{
+			SupportedManifestMIMETypes:     nil,
+			DesiredLayerCompression:        desiredLayerCompression,
+			AcceptsForeignLayerURLs:        false,
+			MustMatchRuntimeOS:             false,
+			IgnoresEmbeddedDockerReference: false, // N/A, DockerReference() returns nil.
+			HasThreadSafePutBlob:           false,
+		}),
+		NoPutBlobPartialInitialize: stubs.NoPutBlobPartial(ref),
+
+		ref: ref,
+	}
+	d.Compat = impl.AddCompat(d)
 	return d, nil
 }
 
@@ -103,51 +127,14 @@ func (d *dirImageDestination) Close() error {
 	return nil
 }
 
-func (d *dirImageDestination) SupportedManifestMIMETypes() []string {
-	return nil
-}
-
-// SupportsSignatures returns an error (to be displayed to the user) if the destination certainly can't store signatures.
-// Note: It is still possible for PutSignatures to fail if SupportsSignatures returns nil.
-func (d *dirImageDestination) SupportsSignatures(ctx context.Context) error {
-	return nil
-}
-
-func (d *dirImageDestination) DesiredLayerCompression() types.LayerCompression {
-	return d.desiredLayerCompression
-}
-
-// AcceptsForeignLayerURLs returns false iff foreign layers in manifest should be actually
-// uploaded to the image destination, true otherwise.
-func (d *dirImageDestination) AcceptsForeignLayerURLs() bool {
-	return false
-}
-
-// MustMatchRuntimeOS returns true iff the destination can store only images targeted for the current runtime architecture and OS. False otherwise.
-func (d *dirImageDestination) MustMatchRuntimeOS() bool {
-	return false
-}
-
-// IgnoresEmbeddedDockerReference returns true iff the destination does not care about Image.EmbeddedDockerReferenceConflicts(),
-// and would prefer to receive an unmodified manifest instead of one modified for the destination.
-// Does not make a difference if Reference().DockerReference() is nil.
-func (d *dirImageDestination) IgnoresEmbeddedDockerReference() bool {
-	return false // N/A, DockerReference() returns nil.
-}
-
-// HasThreadSafePutBlob indicates whether PutBlob can be executed concurrently.
-func (d *dirImageDestination) HasThreadSafePutBlob() bool {
-	return false
-}
-
-// PutBlob writes contents of stream and returns data representing the result (with all data filled in).
+// PutBlobWithOptions writes contents of stream and returns data representing the result.
 // inputInfo.Digest can be optionally provided if known; if provided, and stream is read to the end without error, the digest MUST match the stream contents.
 // inputInfo.Size is the expected length of stream, if known.
-// May update cache.
+// inputInfo.MediaType describes the blob format, if known.
 // WARNING: The contents of stream are being verified on the fly.  Until stream.Read() returns io.EOF, the contents of the data SHOULD NOT be available
 // to any other readers for download using the supplied digest.
 // If stream.Read() at any time, ESPECIALLY at end of input, returns an error, PutBlob MUST 1) fail, and 2) delete any data stored so far.
-func (d *dirImageDestination) PutBlob(ctx context.Context, stream io.Reader, inputInfo types.BlobInfo, cache types.BlobInfoCache, isConfig bool) (types.BlobInfo, error) {
+func (d *dirImageDestination) PutBlobWithOptions(ctx context.Context, stream io.Reader, inputInfo types.BlobInfo, options private.PutBlobOptions) (types.BlobInfo, error) {
 	blobFile, err := os.CreateTemp(d.ref.path, "dir-put-blob")
 	if err != nil {
 		return types.BlobInfo{}, err
@@ -171,7 +158,7 @@ func (d *dirImageDestination) PutBlob(ctx context.Context, stream io.Reader, inp
 	}
 	blobDigest := digester.Digest()
 	if inputInfo.Size != -1 && size != inputInfo.Size {
-		return types.BlobInfo{}, errors.Errorf("Size mismatch when copying %s, expected %d, got %d", blobDigest, inputInfo.Size, size)
+		return types.BlobInfo{}, fmt.Errorf("Size mismatch when copying %s, expected %d, got %d", blobDigest, inputInfo.Size, size)
 	}
 	if err := blobFile.Sync(); err != nil {
 		return types.BlobInfo{}, err
@@ -198,18 +185,16 @@ func (d *dirImageDestination) PutBlob(ctx context.Context, stream io.Reader, inp
 	return types.BlobInfo{Digest: blobDigest, Size: size}, nil
 }
 
-// TryReusingBlob checks whether the transport already contains, or can efficiently reuse, a blob, and if so, applies it to the current destination
+// TryReusingBlobWithOptions checks whether the transport already contains, or can efficiently reuse, a blob, and if so, applies it to the current destination
 // (e.g. if the blob is a filesystem layer, this signifies that the changes it describes need to be applied again when composing a filesystem tree).
 // info.Digest must not be empty.
-// If canSubstitute, TryReusingBlob can use an equivalent equivalent of the desired blob; in that case the returned info may not match the input.
 // If the blob has been successfully reused, returns (true, info, nil); info must contain at least a digest and size, and may
 // include CompressionOperation and CompressionAlgorithm fields to indicate that a change to the compression type should be
 // reflected in the manifest that will be written.
 // If the transport can not reuse the requested blob, TryReusingBlob returns (false, {}, nil); it returns a non-nil error only on an unexpected failure.
-// May use and/or update cache.
-func (d *dirImageDestination) TryReusingBlob(ctx context.Context, info types.BlobInfo, cache types.BlobInfoCache, canSubstitute bool) (bool, types.BlobInfo, error) {
+func (d *dirImageDestination) TryReusingBlobWithOptions(ctx context.Context, info types.BlobInfo, options private.TryReusingBlobOptions) (bool, types.BlobInfo, error) {
 	if info.Digest == "" {
-		return false, types.BlobInfo{}, errors.Errorf(`"Can not check for a blob with unknown digest`)
+		return false, types.BlobInfo{}, fmt.Errorf("Can not check for a blob with unknown digest")
 	}
 	blobPath := d.ref.layerPath(info.Digest)
 	finfo, err := os.Stat(blobPath)
@@ -234,12 +219,17 @@ func (d *dirImageDestination) PutManifest(ctx context.Context, manifest []byte,
 	return os.WriteFile(d.ref.manifestPath(instanceDigest), manifest, 0644)
 }
 
-// PutSignatures writes a set of signatures to the destination.
+// PutSignaturesWithFormat writes a set of signatures to the destination.
 // If instanceDigest is not nil, it contains a digest of the specific manifest instance to write or overwrite the signatures for
 // (when the primary manifest is a manifest list); this should always be nil if the primary manifest is not a manifest list.
-func (d *dirImageDestination) PutSignatures(ctx context.Context, signatures [][]byte, instanceDigest *digest.Digest) error {
+// MUST be called after PutManifest (signatures may reference manifest contents).
+func (d *dirImageDestination) PutSignaturesWithFormat(ctx context.Context, signatures []signature.Signature, instanceDigest *digest.Digest) error {
 	for i, sig := range signatures {
-		if err := os.WriteFile(d.ref.signaturePath(i, instanceDigest), sig, 0644); err != nil {
+		blob, err := signature.Blob(sig)
+		if err != nil {
+			return err
+		}
+		if err := os.WriteFile(d.ref.signaturePath(i, instanceDigest), blob, 0644); err != nil {
 			return err
 		}
 	}

vendor/github.com/containers/image/v5/directory/directory_src.go

@@ -2,22 +2,41 @@ package directory
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"os"
 
+	"github.com/containers/image/v5/internal/imagesource/impl"
+	"github.com/containers/image/v5/internal/imagesource/stubs"
+	"github.com/containers/image/v5/internal/private"
+	"github.com/containers/image/v5/internal/signature"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
 )
 
 type dirImageSource struct {
+	impl.Compat
+	impl.PropertyMethodsInitialize
+	impl.DoesNotAffectLayerInfosForCopy
+	stubs.NoGetBlobAtInitialize
+
 	ref dirReference
 }
 
 // newImageSource returns an ImageSource reading from an existing directory.
 // The caller must call .Close() on the returned ImageSource.
-func newImageSource(ref dirReference) types.ImageSource {
-	return &dirImageSource{ref}
+func newImageSource(ref dirReference) private.ImageSource {
+	s := &dirImageSource{
+		PropertyMethodsInitialize: impl.PropertyMethods(impl.Properties{
+			HasThreadSafeGetBlob: false,
+		}),
+		NoGetBlobAtInitialize: stubs.NoGetBlobAt(ref),
+
+		ref: ref,
+	}
+	s.Compat = impl.AddCompat(s)
+	return s
 }
 
 // Reference returns the reference used to set up this source, _as specified by the user_
@@ -43,11 +62,6 @@ func (s *dirImageSource) GetManifest(ctx context.Context, instanceDigest *digest
 	return m, manifest.GuessMIMEType(m), err
 }
 
-// HasThreadSafeGetBlob indicates whether GetBlob can be executed concurrently.
-func (s *dirImageSource) HasThreadSafeGetBlob() bool {
-	return false
-}
-
 // GetBlob returns a stream for the specified blob, and the blob’s size (or -1 if unknown).
 // The Digest field in BlobInfo is guaranteed to be provided, Size may be -1 and MediaType may be optionally provided.
 // May update BlobInfoCache, preferably after it knows for certain that a blob truly exists at a specific location.
@@ -63,33 +77,26 @@ func (s *dirImageSource) GetBlob(ctx context.Context, info types.BlobInfo, cache
 	return r, fi.Size(), nil
 }
 
-// GetSignatures returns the image's signatures.  It may use a remote (= slow) service.
+// GetSignaturesWithFormat returns the image's signatures.  It may use a remote (= slow) service.
 // If instanceDigest is not nil, it contains a digest of the specific manifest instance to retrieve signatures for
 // (when the primary manifest is a manifest list); this never happens if the primary manifest is not a manifest list
 // (e.g. if the source never returns manifest lists).
-func (s *dirImageSource) GetSignatures(ctx context.Context, instanceDigest *digest.Digest) ([][]byte, error) {
-	signatures := [][]byte{}
+func (s *dirImageSource) GetSignaturesWithFormat(ctx context.Context, instanceDigest *digest.Digest) ([]signature.Signature, error) {
+	signatures := []signature.Signature{}
 	for i := 0; ; i++ {
-		signature, err := os.ReadFile(s.ref.signaturePath(i, instanceDigest))
+		path := s.ref.signaturePath(i, instanceDigest)
+		sigBlob, err := os.ReadFile(path)
 		if err != nil {
 			if os.IsNotExist(err) {
 				break
 			}
 			return nil, err
 		}
+		signature, err := signature.FromBlob(sigBlob)
+		if err != nil {
+			return nil, fmt.Errorf("parsing signature %q: %w", path, err)
+		}
 		signatures = append(signatures, signature)
 	}
 	return signatures, nil
 }
-
-// LayerInfosForCopy returns either nil (meaning the values in the manifest are fine), or updated values for the layer
-// blobsums that are listed in the image's manifest.  If values are returned, they should be used when using GetBlob()
-// to read the image's layers.
-// If instanceDigest is not nil, it contains a digest of the specific manifest instance to retrieve BlobInfos for
-// (when the primary manifest is a manifest list); this never happens if the primary manifest is not a manifest list
-// (e.g. if the source never returns manifest lists).
-// The Digest field is guaranteed to be provided; Size may be -1.
-// WARNING: The list may contain duplicates, and they are semantically relevant.
-func (s *dirImageSource) LayerInfosForCopy(context.Context, *digest.Digest) ([]types.BlobInfo, error) {
-	return nil, nil
-}

vendor/github.com/containers/image/v5/directory/directory_transport.go

@@ -2,17 +2,17 @@ package directory
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"path/filepath"
 	"strings"
 
 	"github.com/containers/image/v5/directory/explicitfilepath"
 	"github.com/containers/image/v5/docker/reference"
-	"github.com/containers/image/v5/image"
+	"github.com/containers/image/v5/internal/image"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
 )
 
 func init() {
@@ -39,7 +39,7 @@ func (t dirTransport) ParseReference(reference string) (types.ImageReference, er
 // scope passed to this function will not be "", that value is always allowed.
 func (t dirTransport) ValidatePolicyConfigurationScope(scope string) error {
 	if !strings.HasPrefix(scope, "/") {
-		return errors.Errorf("Invalid scope %s: Must be an absolute path", scope)
+		return fmt.Errorf("Invalid scope %s: Must be an absolute path", scope)
 	}
 	// Refuse also "/", otherwise "/" and "" would have the same semantics,
 	// and "" could be unexpectedly shadowed by the "/" entry.
@@ -48,7 +48,7 @@ func (t dirTransport) ValidatePolicyConfigurationScope(scope string) error {
 	}
 	cleaned := filepath.Clean(scope)
 	if cleaned != scope {
-		return errors.Errorf(`Invalid scope %s: Uses non-canonical format, perhaps try %s`, scope, cleaned)
+		return fmt.Errorf(`Invalid scope %s: Uses non-canonical format, perhaps try %s`, scope, cleaned)
 	}
 	return nil
 }
@@ -140,8 +140,7 @@ func (ref dirReference) PolicyConfigurationNamespaces() []string {
 // verify that UnparsedImage, and convert it into a real Image via image.FromUnparsedImage.
 // WARNING: This may not do the right thing for a manifest list, see image.FromSource for details.
 func (ref dirReference) NewImage(ctx context.Context, sys *types.SystemContext) (types.ImageCloser, error) {
-	src := newImageSource(ref)
-	return image.FromSource(ctx, sys, src)
+	return image.FromReference(ctx, sys, ref)
 }
 
 // NewImageSource returns a types.ImageSource for this reference.
@@ -158,7 +157,7 @@ func (ref dirReference) NewImageDestination(ctx context.Context, sys *types.Syst
 
 // DeleteImage deletes the named image from the registry, if supported.
 func (ref dirReference) DeleteImage(ctx context.Context, sys *types.SystemContext) error {
-	return errors.Errorf("Deleting images not implemented for dir: images")
+	return errors.New("Deleting images not implemented for dir: images")
 }
 
 // manifestPath returns a path for the manifest within a directory using our conventions.

vendor/github.com/containers/image/v5/directory/explicitfilepath/path.go

@@ -1,10 +1,9 @@
 package explicitfilepath
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
-
-	"github.com/pkg/errors"
 )
 
 // ResolvePathToFullyExplicit returns the input path converted to an absolute, no-symlinks, cleaned up path.
@@ -26,14 +25,14 @@ func ResolvePathToFullyExplicit(path string) (string, error) {
 			// This can still happen if there is a filesystem race condition, causing the Lstat() above to fail but the later resolution to succeed.
 			// We do not care to promise anything if such filesystem race conditions can happen, but we definitely don't want to return "."/".." components
 			// in the resulting path, and especially not at the end.
-			return "", errors.Errorf("Unexpectedly missing special filename component in %s", path)
+			return "", fmt.Errorf("Unexpectedly missing special filename component in %s", path)
 		}
 		resolvedPath := filepath.Join(resolvedParent, file)
 		// As a sanity check, ensure that there are no "." or ".." components.
 		cleanedResolvedPath := filepath.Clean(resolvedPath)
 		if cleanedResolvedPath != resolvedPath {
 			// Coverage: This should never happen.
-			return "", errors.Errorf("Internal inconsistency: Path %s resolved to %s still cleaned up to %s", path, resolvedPath, cleanedResolvedPath)
+			return "", fmt.Errorf("Internal inconsistency: Path %s resolved to %s still cleaned up to %s", path, resolvedPath, cleanedResolvedPath)
 		}
 		return resolvedPath, nil
 	default: // err != nil, unrecognized

vendor/github.com/containers/image/v5/docker/archive/dest.go

@@ -2,11 +2,12 @@ package archive
 
 import (
 	"context"
+	"fmt"
 	"io"
 
 	"github.com/containers/image/v5/docker/internal/tarfile"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
 )
 
 type archiveImageDestination struct {
@@ -16,9 +17,9 @@ type archiveImageDestination struct {
 	writer               io.Closer       // May be nil if the archive is shared
 }
 
-func newImageDestination(sys *types.SystemContext, ref archiveReference) (types.ImageDestination, error) {
+func newImageDestination(sys *types.SystemContext, ref archiveReference) (private.ImageDestination, error) {
 	if ref.sourceIndex != -1 {
-		return nil, errors.Errorf("Destination reference must not contain a manifest index @%d", ref.sourceIndex)
+		return nil, fmt.Errorf("Destination reference must not contain a manifest index @%d", ref.sourceIndex)
 	}
 
 	var archive *tarfile.Writer
@@ -35,7 +36,7 @@ func newImageDestination(sys *types.SystemContext, ref archiveReference) (types.
 		archive = tarfile.NewWriter(fh)
 		writer = fh
 	}
-	tarDest := tarfile.NewDestination(sys, archive, ref.ref)
+	tarDest := tarfile.NewDestination(sys, archive, ref.Transport().Name(), ref.ref)
 	if sys != nil && sys.DockerArchiveAdditionalTags != nil {
 		tarDest.AddRepoTags(sys.DockerArchiveAdditionalTags)
 	}
@@ -47,11 +48,6 @@ func newImageDestination(sys *types.SystemContext, ref archiveReference) (types.
 	}, nil
 }
 
-// DesiredLayerCompression indicates if layers must be compressed, decompressed or preserved
-func (d *archiveImageDestination) DesiredLayerCompression() types.LayerCompression {
-	return types.Decompress
-}
-
 // Reference returns the reference used to set up this destination.  Note that this should directly correspond to user's intent,
 // e.g. it should use the public hostname instead of the result of resolving CNAMEs or following redirects.
 func (d *archiveImageDestination) Reference() types.ImageReference {

vendor/github.com/containers/image/v5/docker/archive/reader.go

@@ -1,11 +1,13 @@
 package archive
 
 import (
+	"fmt"
+
 	"github.com/containers/image/v5/docker/internal/tarfile"
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 // Reader manages a single Docker archive, allows listing its contents and accessing
@@ -40,10 +42,10 @@ func (r *Reader) Close() error {
 func NewReaderForReference(sys *types.SystemContext, ref types.ImageReference) (*Reader, types.ImageReference, error) {
 	standalone, ok := ref.(archiveReference)
 	if !ok {
-		return nil, nil, errors.Errorf("Internal error: NewReaderForReference called for a non-docker/archive ImageReference %s", transports.ImageName(ref))
+		return nil, nil, fmt.Errorf("Internal error: NewReaderForReference called for a non-docker/archive ImageReference %s", transports.ImageName(ref))
 	}
 	if standalone.archiveReader != nil {
-		return nil, nil, errors.Errorf("Internal error: NewReaderForReference called for a reader-bound reference %s", standalone.StringWithinTransport())
+		return nil, nil, fmt.Errorf("Internal error: NewReaderForReference called for a reader-bound reference %s", standalone.StringWithinTransport())
 	}
 	reader, err := NewReader(sys, standalone.path)
 	if err != nil {
@@ -73,22 +75,22 @@ func (r *Reader) List() ([][]types.ImageReference, error) {
 		for _, tag := range image.RepoTags {
 			parsedTag, err := reference.ParseNormalizedNamed(tag)
 			if err != nil {
-				return nil, errors.Wrapf(err, "Invalid tag %#v in manifest item @%d", tag, imageIndex)
+				return nil, perrors.Wrapf(err, "Invalid tag %#v in manifest item @%d", tag, imageIndex)
 			}
 			nt, ok := parsedTag.(reference.NamedTagged)
 			if !ok {
-				return nil, errors.Errorf("Invalid tag %s (%s): does not contain a tag", tag, parsedTag.String())
+				return nil, fmt.Errorf("Invalid tag %s (%s): does not contain a tag", tag, parsedTag.String())
 			}
 			ref, err := newReference(r.path, nt, -1, r.archive, nil)
 			if err != nil {
-				return nil, errors.Wrapf(err, "creating a reference for tag %#v in manifest item @%d", tag, imageIndex)
+				return nil, perrors.Wrapf(err, "creating a reference for tag %#v in manifest item @%d", tag, imageIndex)
 			}
 			refs = append(refs, ref)
 		}
 		if len(refs) == 0 {
 			ref, err := newReference(r.path, nil, imageIndex, r.archive, nil)
 			if err != nil {
-				return nil, errors.Wrapf(err, "creating a reference for manifest item @%d", imageIndex)
+				return nil, perrors.Wrapf(err, "creating a reference for manifest item @%d", imageIndex)
 			}
 			refs = append(refs, ref)
 		}
@@ -107,7 +109,7 @@ func (r *Reader) List() ([][]types.ImageReference, error) {
 func (r *Reader) ManifestTagsForReference(ref types.ImageReference) ([]string, error) {
 	archiveRef, ok := ref.(archiveReference)
 	if !ok {
-		return nil, errors.Errorf("Internal error: ManifestTagsForReference called for a non-docker/archive ImageReference %s", transports.ImageName(ref))
+		return nil, fmt.Errorf("Internal error: ManifestTagsForReference called for a non-docker/archive ImageReference %s", transports.ImageName(ref))
 	}
 	manifestItem, tagIndex, err := r.archive.ChooseManifestItem(archiveRef.ref, archiveRef.sourceIndex)
 	if err != nil {

vendor/github.com/containers/image/v5/docker/archive/src.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/containers/image/v5/docker/internal/tarfile"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/types"
 )
 
@@ -14,7 +15,7 @@ type archiveImageSource struct {
 
 // newImageSource returns a types.ImageSource for the specified image reference.
 // The caller must call .Close() on the returned ImageSource.
-func newImageSource(ctx context.Context, sys *types.SystemContext, ref archiveReference) (types.ImageSource, error) {
+func newImageSource(ctx context.Context, sys *types.SystemContext, ref archiveReference) (private.ImageSource, error) {
 	var archive *tarfile.Reader
 	var closeArchive bool
 	if ref.archiveReader != nil {
@@ -28,7 +29,7 @@ func newImageSource(ctx context.Context, sys *types.SystemContext, ref archiveRe
 		archive = a
 		closeArchive = true
 	}
-	src := tarfile.NewSource(archive, closeArchive, ref.ref, ref.sourceIndex)
+	src := tarfile.NewSource(archive, closeArchive, ref.Transport().Name(), ref.ref, ref.sourceIndex)
 	return &archiveImageSource{
 		Source: src,
 		ref:    ref,

vendor/github.com/containers/image/v5/docker/archive/transport.go

@@ -2,16 +2,17 @@ package archive
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strconv"
 	"strings"
 
 	"github.com/containers/image/v5/docker/internal/tarfile"
 	"github.com/containers/image/v5/docker/reference"
-	ctrImage "github.com/containers/image/v5/image"
+	ctrImage "github.com/containers/image/v5/internal/image"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 func init() {
@@ -59,7 +60,7 @@ type archiveReference struct {
 // ParseReference converts a string, which should not start with the ImageTransport.Name prefix, into an Docker ImageReference.
 func ParseReference(refString string) (types.ImageReference, error) {
 	if refString == "" {
-		return nil, errors.Errorf("docker-archive reference %s isn't of the form <path>[:<reference>]", refString)
+		return nil, fmt.Errorf("docker-archive reference %s isn't of the form <path>[:<reference>]", refString)
 	}
 
 	parts := strings.SplitN(refString, ":", 2)
@@ -72,21 +73,21 @@ func ParseReference(refString string) (types.ImageReference, error) {
 		if len(parts[1]) > 0 && parts[1][0] == '@' {
 			i, err := strconv.Atoi(parts[1][1:])
 			if err != nil {
-				return nil, errors.Wrapf(err, "Invalid source index %s", parts[1])
+				return nil, perrors.Wrapf(err, "Invalid source index %s", parts[1])
 			}
 			if i < 0 {
-				return nil, errors.Errorf("Invalid source index @%d: must not be negative", i)
+				return nil, fmt.Errorf("Invalid source index @%d: must not be negative", i)
 			}
 			sourceIndex = i
 		} else {
 			ref, err := reference.ParseNormalizedNamed(parts[1])
 			if err != nil {
-				return nil, errors.Wrapf(err, "docker-archive parsing reference")
+				return nil, perrors.Wrapf(err, "docker-archive parsing reference")
 			}
 			ref = reference.TagNameOnly(ref)
 			refTagged, isTagged := ref.(reference.NamedTagged)
 			if !isTagged { // If ref contains a digest, TagNameOnly does not change it
-				return nil, errors.Errorf("reference does not include a tag: %s", ref.String())
+				return nil, fmt.Errorf("reference does not include a tag: %s", ref.String())
 			}
 			nt = refTagged
 		}
@@ -110,16 +111,16 @@ func NewIndexReference(path string, sourceIndex int) (types.ImageReference, erro
 func newReference(path string, ref reference.NamedTagged, sourceIndex int,
 	archiveReader *tarfile.Reader, archiveWriter *tarfile.Writer) (types.ImageReference, error) {
 	if strings.Contains(path, ":") {
-		return nil, errors.Errorf("Invalid docker-archive: reference: colon in path %q is not supported", path)
+		return nil, fmt.Errorf("Invalid docker-archive: reference: colon in path %q is not supported", path)
 	}
 	if ref != nil && sourceIndex != -1 {
-		return nil, errors.Errorf("Invalid docker-archive: reference: cannot use both a tag and a source index")
+		return nil, fmt.Errorf("Invalid docker-archive: reference: cannot use both a tag and a source index")
 	}
 	if _, isDigest := ref.(reference.Canonical); isDigest {
-		return nil, errors.Errorf("docker-archive doesn't support digest references: %s", ref.String())
+		return nil, fmt.Errorf("docker-archive doesn't support digest references: %s", ref.String())
 	}
 	if sourceIndex != -1 && sourceIndex < 0 {
-		return nil, errors.Errorf("Invalid docker-archive: reference: index @%d must not be negative", sourceIndex)
+		return nil, fmt.Errorf("Invalid docker-archive: reference: index @%d must not be negative", sourceIndex)
 	}
 	return archiveReference{
 		path:          path,
@@ -185,11 +186,7 @@ func (ref archiveReference) PolicyConfigurationNamespaces() []string {
 // verify that UnparsedImage, and convert it into a real Image via image.FromUnparsedImage.
 // WARNING: This may not do the right thing for a manifest list, see image.FromSource for details.
 func (ref archiveReference) NewImage(ctx context.Context, sys *types.SystemContext) (types.ImageCloser, error) {
-	src, err := newImageSource(ctx, sys, ref)
-	if err != nil {
-		return nil, err
-	}
-	return ctrImage.FromSource(ctx, sys, src)
+	return ctrImage.FromReference(ctx, sys, ref)
 }
 
 // NewImageSource returns a types.ImageSource for this reference.

vendor/github.com/containers/image/v5/docker/archive/writer.go

@@ -1,13 +1,14 @@
 package archive
 
 import (
+	"errors"
 	"io"
 	"os"
 
 	"github.com/containers/image/v5/docker/internal/tarfile"
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 // Writer manages a single in-progress Docker archive and allows adding images to it.
@@ -60,7 +61,7 @@ func openArchiveForWriting(path string) (*os.File, error) {
 	// only in a different way. Either way, it’s up to the user to not have two writers to the same path.)
 	fh, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE, 0644)
 	if err != nil {
-		return nil, errors.Wrapf(err, "opening file %q", path)
+		return nil, perrors.Wrapf(err, "opening file %q", path)
 	}
 	succeeded := false
 	defer func() {
@@ -70,7 +71,7 @@ func openArchiveForWriting(path string) (*os.File, error) {
 	}()
 	fhStat, err := fh.Stat()
 	if err != nil {
-		return nil, errors.Wrapf(err, "statting file %q", path)
+		return nil, perrors.Wrapf(err, "statting file %q", path)
 	}
 
 	if fhStat.Mode().IsRegular() && fhStat.Size() != 0 {

vendor/github.com/containers/image/v5/docker/daemon/daemon_dest.go

@@ -2,13 +2,16 @@ package daemon
 
 import (
 	"context"
+	"errors"
+	"fmt"
 	"io"
 
 	"github.com/containers/image/v5/docker/internal/tarfile"
 	"github.com/containers/image/v5/docker/reference"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/types"
 	"github.com/docker/docker/client"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -26,13 +29,13 @@ type daemonImageDestination struct {
 }
 
 // newImageDestination returns a types.ImageDestination for the specified image reference.
-func newImageDestination(ctx context.Context, sys *types.SystemContext, ref daemonReference) (types.ImageDestination, error) {
+func newImageDestination(ctx context.Context, sys *types.SystemContext, ref daemonReference) (private.ImageDestination, error) {
 	if ref.ref == nil {
-		return nil, errors.Errorf("Invalid destination docker-daemon:%s: a destination must be a name:tag", ref.StringWithinTransport())
+		return nil, fmt.Errorf("Invalid destination docker-daemon:%s: a destination must be a name:tag", ref.StringWithinTransport())
 	}
 	namedTaggedRef, ok := ref.ref.(reference.NamedTagged)
 	if !ok {
-		return nil, errors.Errorf("Invalid destination docker-daemon:%s: a destination must be a name:tag", ref.StringWithinTransport())
+		return nil, fmt.Errorf("Invalid destination docker-daemon:%s: a destination must be a name:tag", ref.StringWithinTransport())
 	}
 
 	var mustMatchRuntimeOS = true
@@ -42,7 +45,7 @@ func newImageDestination(ctx context.Context, sys *types.SystemContext, ref daem
 
 	c, err := newDockerClient(sys)
 	if err != nil {
-		return nil, errors.Wrap(err, "initializing docker engine client")
+		return nil, perrors.Wrap(err, "initializing docker engine client")
 	}
 
 	reader, writer := io.Pipe()
@@ -56,7 +59,7 @@ func newImageDestination(ctx context.Context, sys *types.SystemContext, ref daem
 	return &daemonImageDestination{
 		ref:                ref,
 		mustMatchRuntimeOS: mustMatchRuntimeOS,
-		Destination:        tarfile.NewDestination(sys, archive, namedTaggedRef),
+		Destination:        tarfile.NewDestination(sys, archive, ref.Transport().Name(), namedTaggedRef),
 		archive:            archive,
 		goroutineCancel:    goroutineCancel,
 		statusChannel:      statusChannel,
@@ -84,7 +87,7 @@ func imageLoadGoroutine(ctx context.Context, c *client.Client, reader *io.PipeRe
 
 	resp, err := c.ImageLoad(ctx, reader, true)
 	if err != nil {
-		err = errors.Wrap(err, "saving image to docker engine")
+		err = perrors.Wrap(err, "saving image to docker engine")
 		return
 	}
 	defer resp.Body.Close()

vendor/github.com/containers/image/v5/docker/daemon/daemon_src.go

@@ -4,8 +4,9 @@ import (
 	"context"
 
 	"github.com/containers/image/v5/docker/internal/tarfile"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 type daemonImageSource struct {
@@ -22,16 +23,16 @@ type daemonImageSource struct {
 // (We could, perhaps, expect an exact sequence, assume that the first plaintext file
 // is the config, and that the following len(RootFS) files are the layers, but that feels
 // way too brittle.)
-func newImageSource(ctx context.Context, sys *types.SystemContext, ref daemonReference) (types.ImageSource, error) {
+func newImageSource(ctx context.Context, sys *types.SystemContext, ref daemonReference) (private.ImageSource, error) {
 	c, err := newDockerClient(sys)
 	if err != nil {
-		return nil, errors.Wrap(err, "initializing docker engine client")
+		return nil, perrors.Wrap(err, "initializing docker engine client")
 	}
 	// Per NewReference(), ref.StringWithinTransport() is either an image ID (config digest), or a !reference.NameOnly() reference.
 	// Either way ImageSave should create a tarball with exactly one image.
 	inputStream, err := c.ImageSave(ctx, []string{ref.StringWithinTransport()})
 	if err != nil {
-		return nil, errors.Wrap(err, "loading image from docker engine")
+		return nil, perrors.Wrap(err, "loading image from docker engine")
 	}
 	defer inputStream.Close()
 
@@ -39,7 +40,7 @@ func newImageSource(ctx context.Context, sys *types.SystemContext, ref daemonRef
 	if err != nil {
 		return nil, err
 	}
-	src := tarfile.NewSource(archive, true, nil, -1)
+	src := tarfile.NewSource(archive, true, ref.Transport().Name(), nil, -1)
 	return &daemonImageSource{
 		ref:    ref,
 		Source: src,

vendor/github.com/containers/image/v5/docker/daemon/daemon_transport.go

@@ -2,15 +2,15 @@ package daemon
 
 import (
 	"context"
+	"errors"
 	"fmt"
 
 	"github.com/containers/image/v5/docker/policyconfiguration"
 	"github.com/containers/image/v5/docker/reference"
-	"github.com/containers/image/v5/image"
+	"github.com/containers/image/v5/internal/image"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
 )
 
 func init() {
@@ -39,7 +39,7 @@ func (t daemonTransport) ParseReference(reference string) (types.ImageReference,
 func (t daemonTransport) ValidatePolicyConfigurationScope(scope string) error {
 	// ID values cannot be effectively namespaced, and are clearly invalid host:port values.
 	if _, err := digest.Parse(scope); err == nil {
-		return errors.Errorf(`docker-daemon: can not use algo:digest value %s as a namespace`, scope)
+		return fmt.Errorf(`docker-daemon: can not use algo:digest value %s as a namespace`, scope)
 	}
 
 	// FIXME? We could be verifying the various character set and length restrictions
@@ -70,7 +70,7 @@ func ParseReference(refString string) (types.ImageReference, error) {
 		// The daemon explicitly refuses to tag images with a reponame equal to digest.Canonical - but _only_ this digest name.
 		// Other digest references are ambiguous, so refuse them.
 		if dgst.Algorithm() != digest.Canonical {
-			return nil, errors.Errorf("Invalid docker-daemon: reference %s: only digest algorithm %s accepted", refString, digest.Canonical)
+			return nil, fmt.Errorf("Invalid docker-daemon: reference %s: only digest algorithm %s accepted", refString, digest.Canonical)
 		}
 		return NewReference(dgst, nil)
 	}
@@ -80,7 +80,7 @@ func ParseReference(refString string) (types.ImageReference, error) {
 		return nil, err
 	}
 	if reference.FamiliarName(ref) == digest.Canonical.String() {
-		return nil, errors.Errorf("Invalid docker-daemon: reference %s: The %s repository name is reserved for (non-shortened) digest references", refString, digest.Canonical)
+		return nil, fmt.Errorf("Invalid docker-daemon: reference %s: The %s repository name is reserved for (non-shortened) digest references", refString, digest.Canonical)
 	}
 	return NewReference("", ref)
 }
@@ -92,7 +92,7 @@ func NewReference(id digest.Digest, ref reference.Named) (types.ImageReference,
 	}
 	if ref != nil {
 		if reference.IsNameOnly(ref) {
-			return nil, errors.Errorf("docker-daemon: reference %s has neither a tag nor a digest", reference.FamiliarString(ref))
+			return nil, fmt.Errorf("docker-daemon: reference %s has neither a tag nor a digest", reference.FamiliarString(ref))
 		}
 		// A github.com/distribution/reference value can have a tag and a digest at the same time!
 		// Most versions of docker/reference do not handle that (ignoring the tag), so reject such input.
@@ -102,7 +102,7 @@ func NewReference(id digest.Digest, ref reference.Named) (types.ImageReference,
 		_, isTagged := ref.(reference.NamedTagged)
 		_, isDigested := ref.(reference.Canonical)
 		if isTagged && isDigested {
-			return nil, errors.Errorf("docker-daemon: references with both a tag and digest are currently not supported")
+			return nil, fmt.Errorf("docker-daemon: references with both a tag and digest are currently not supported")
 		}
 	}
 	return daemonReference{
@@ -195,11 +195,7 @@ func (ref daemonReference) PolicyConfigurationNamespaces() []string {
 // verify that UnparsedImage, and convert it into a real Image via image.FromUnparsedImage.
 // WARNING: This may not do the right thing for a manifest list, see image.FromSource for details.
 func (ref daemonReference) NewImage(ctx context.Context, sys *types.SystemContext) (types.ImageCloser, error) {
-	src, err := newImageSource(ctx, sys, ref)
-	if err != nil {
-		return nil, err
-	}
-	return image.FromSource(ctx, sys, src)
+	return image.FromReference(ctx, sys, ref)
 }
 
 // NewImageSource returns a types.ImageSource for this reference.
@@ -219,5 +215,5 @@ func (ref daemonReference) DeleteImage(ctx context.Context, sys *types.SystemCon
 	// Should this just untag the image? Should this stop running containers?
 	// The semantics is not quite as clear as for remote repositories.
 	// The user can run (docker rmi) directly anyway, so, for now(?), punt instead of trying to guess what the user meant.
-	return errors.Errorf("Deleting images not implemented for docker-daemon: images")
+	return errors.New("Deleting images not implemented for docker-daemon: images")
 }

vendor/github.com/containers/image/v5/docker/docker_client.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/tls"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -17,16 +18,20 @@ import (
 
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/internal/iolimits"
+	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/pkg/docker/config"
 	"github.com/containers/image/v5/pkg/sysregistriesv2"
 	"github.com/containers/image/v5/pkg/tlsclientconfig"
 	"github.com/containers/image/v5/types"
 	"github.com/containers/image/v5/version"
 	"github.com/containers/storage/pkg/homedir"
+	"github.com/docker/distribution/registry/api/errcode"
+	v2 "github.com/docker/distribution/registry/api/v2"
 	clientLib "github.com/docker/distribution/registry/client"
 	"github.com/docker/go-connections/tlsconfig"
 	digest "github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -61,8 +66,8 @@ type certPath struct {
 var (
 	homeCertDir     = filepath.FromSlash(".config/containers/certs.d")
 	perHostCertDirs = []certPath{
-		{path: "/etc/containers/certs.d", absolute: true},
-		{path: "/etc/docker/certs.d", absolute: true},
+		{path: etcDir + "/containers/certs.d", absolute: true},
+		{path: etcDir + "/docker/certs.d", absolute: true},
 	}
 
 	defaultUserAgent = "containers/" + version.Version + " (github.com/containers/image)"
@@ -101,10 +106,11 @@ type dockerClient struct {
 	// by detectProperties(). Callers can edit tlsClientConfig.InsecureSkipVerify in the meantime.
 	tlsClientConfig *tls.Config
 	// The following members are not set by newDockerClient and must be set by callers if needed.
-	auth          types.DockerAuthConfig
-	registryToken string
-	signatureBase signatureStorageBase
-	scope         authScope
+	auth                   types.DockerAuthConfig
+	registryToken          string
+	signatureBase          lookasideStorageBase
+	useSigstoreAttachments bool
+	scope                  authScope
 
 	// The following members are detected registry properties:
 	// They are set after a successful detectProperties(), and never change afterwards.
@@ -163,9 +169,8 @@ func newBearerTokenFromJSONBlob(blob []byte) (*bearerToken, error) {
 func serverDefault() *tls.Config {
 	return &tls.Config{
 		// Avoid fallback to SSL protocols < TLS1.0
-		MinVersion:               tls.VersionTLS10,
-		PreferServerCipherSuites: true,
-		CipherSuites:             tlsconfig.DefaultServerAcceptedCiphers,
+		MinVersion:   tls.VersionTLS10,
+		CipherSuites: tlsconfig.DefaultServerAcceptedCiphers,
 	}
 }
 
@@ -210,13 +215,13 @@ func dockerCertDir(sys *types.SystemContext, hostPort string) (string, error) {
 // newDockerClientFromRef returns a new dockerClient instance for refHostname (a host a specified in the Docker image reference, not canonicalized to dockerRegistry)
 // “write” specifies whether the client will be used for "write" access (in particular passed to lookaside.go:toplevelFromSection)
 // signatureBase is always set in the return value
-func newDockerClientFromRef(sys *types.SystemContext, ref dockerReference, write bool, actions string) (*dockerClient, error) {
+func newDockerClientFromRef(sys *types.SystemContext, ref dockerReference, registryConfig *registryConfiguration, write bool, actions string) (*dockerClient, error) {
 	auth, err := config.GetCredentialsForRef(sys, ref.ref)
 	if err != nil {
-		return nil, errors.Wrapf(err, "getting username and password")
+		return nil, perrors.Wrapf(err, "getting username and password")
 	}
 
-	sigBase, err := SignatureStorageBaseURL(sys, ref, write)
+	sigBase, err := registryConfig.lookasideStorageBaseURL(ref, write)
 	if err != nil {
 		return nil, err
 	}
@@ -231,6 +236,7 @@ func newDockerClientFromRef(sys *types.SystemContext, ref dockerReference, write
 		client.registryToken = sys.DockerBearerRegistryToken
 	}
 	client.signatureBase = sigBase
+	client.useSigstoreAttachments = registryConfig.useSigstoreAttachments(ref)
 	client.scope.actions = actions
 	client.scope.remoteName = reference.Path(ref.ref)
 	return client, nil
@@ -267,7 +273,7 @@ func newDockerClient(sys *types.SystemContext, registry, reference string) (*doc
 	skipVerify := false
 	reg, err := sysregistriesv2.FindRegistry(sys, reference)
 	if err != nil {
-		return nil, errors.Wrapf(err, "loading registries")
+		return nil, perrors.Wrapf(err, "loading registries")
 	}
 	if reg != nil {
 		if reg.Blocked {
@@ -295,7 +301,7 @@ func newDockerClient(sys *types.SystemContext, registry, reference string) (*doc
 func CheckAuth(ctx context.Context, sys *types.SystemContext, username, password, registry string) error {
 	client, err := newDockerClient(sys, registry, registry)
 	if err != nil {
-		return errors.Wrapf(err, "creating new docker client")
+		return perrors.Wrapf(err, "creating new docker client")
 	}
 	client.auth = types.DockerAuthConfig{
 		Username: username,
@@ -344,7 +350,7 @@ func SearchRegistry(ctx context.Context, sys *types.SystemContext, registry, ima
 	// We can't use GetCredentialsForRef here because we want to search the whole registry.
 	auth, err := config.GetCredentials(sys, registry)
 	if err != nil {
-		return nil, errors.Wrapf(err, "getting username and password")
+		return nil, perrors.Wrapf(err, "getting username and password")
 	}
 
 	// The /v2/_catalog endpoint has been disabled for docker.io therefore
@@ -358,7 +364,7 @@ func SearchRegistry(ctx context.Context, sys *types.SystemContext, registry, ima
 
 	client, err := newDockerClient(sys, hostname, registry)
 	if err != nil {
-		return nil, errors.Wrapf(err, "creating new docker client")
+		return nil, perrors.Wrapf(err, "creating new docker client")
 	}
 	client.auth = auth
 	if sys != nil {
@@ -401,13 +407,13 @@ func SearchRegistry(ctx context.Context, sys *types.SystemContext, registry, ima
 		resp, err := client.makeRequest(ctx, http.MethodGet, path, nil, nil, v2Auth, nil)
 		if err != nil {
 			logrus.Debugf("error getting search results from v2 endpoint %q: %v", registry, err)
-			return nil, errors.Wrapf(err, "couldn't search registry %q", registry)
+			return nil, perrors.Wrapf(err, "couldn't search registry %q", registry)
 		}
 		defer resp.Body.Close()
 		if resp.StatusCode != http.StatusOK {
 			err := httpResponseToError(resp, "")
 			logrus.Errorf("error getting search results from v2 endpoint %q: %v", registry, err)
-			return nil, errors.Wrapf(err, "couldn't search registry %q", registry)
+			return nil, perrors.Wrapf(err, "couldn't search registry %q", registry)
 		}
 		v2Res := &V2Results{}
 		if err := json.NewDecoder(resp.Body).Decode(v2Res); err != nil {
@@ -629,7 +635,7 @@ func (c *dockerClient) getBearerTokenOAuth2(ctx context.Context, challenge chall
 	scopes []authScope) (*bearerToken, error) {
 	realm, ok := challenge.Parameters["realm"]
 	if !ok {
-		return nil, errors.Errorf("missing realm in bearer auth challenge")
+		return nil, errors.New("missing realm in bearer auth challenge")
 	}
 
 	authReq, err := http.NewRequestWithContext(ctx, http.MethodPost, realm, nil)
@@ -677,7 +683,7 @@ func (c *dockerClient) getBearerToken(ctx context.Context, challenge challenge,
 	scopes []authScope) (*bearerToken, error) {
 	realm, ok := challenge.Parameters["realm"]
 	if !ok {
-		return nil, errors.Errorf("missing realm in bearer auth challenge")
+		return nil, errors.New("missing realm in bearer auth challenge")
 	}
 
 	authReq, err := http.NewRequestWithContext(ctx, http.MethodGet, realm, nil)
@@ -761,7 +767,7 @@ func (c *dockerClient) detectPropertiesHelper(ctx context.Context) error {
 		err = ping("http")
 	}
 	if err != nil {
-		err = errors.Wrapf(err, "pinging container registry %s", c.registry)
+		err = perrors.Wrapf(err, "pinging container registry %s", c.registry)
 		if c.sys != nil && c.sys.DockerDisableV1Ping {
 			return err
 		}
@@ -801,6 +807,166 @@ func (c *dockerClient) detectProperties(ctx context.Context) error {
 	return c.detectPropertiesError
 }
 
+func (c *dockerClient) fetchManifest(ctx context.Context, ref dockerReference, tagOrDigest string) ([]byte, string, error) {
+	path := fmt.Sprintf(manifestPath, reference.Path(ref.ref), tagOrDigest)
+	headers := map[string][]string{
+		"Accept": manifest.DefaultRequestedManifestMIMETypes,
+	}
+	res, err := c.makeRequest(ctx, http.MethodGet, path, headers, nil, v2Auth, nil)
+	if err != nil {
+		return nil, "", err
+	}
+	logrus.Debugf("Content-Type from manifest GET is %q", res.Header.Get("Content-Type"))
+	defer res.Body.Close()
+	if res.StatusCode != http.StatusOK {
+		return nil, "", perrors.Wrapf(registryHTTPResponseToError(res), "reading manifest %s in %s", tagOrDigest, ref.ref.Name())
+	}
+
+	manblob, err := iolimits.ReadAtMost(res.Body, iolimits.MaxManifestBodySize)
+	if err != nil {
+		return nil, "", err
+	}
+	return manblob, simplifyContentType(res.Header.Get("Content-Type")), nil
+}
+
+// getExternalBlob returns the reader of the first available blob URL from urls, which must not be empty.
+// This function can return nil reader when no url is supported by this function. In this case, the caller
+// should fallback to fetch the non-external blob (i.e. pull from the registry).
+func (c *dockerClient) getExternalBlob(ctx context.Context, urls []string) (io.ReadCloser, int64, error) {
+	var (
+		resp *http.Response
+		err  error
+	)
+	if len(urls) == 0 {
+		return nil, 0, errors.New("internal error: getExternalBlob called with no URLs")
+	}
+	for _, u := range urls {
+		url, err := url.Parse(u)
+		if err != nil || (url.Scheme != "http" && url.Scheme != "https") {
+			continue // unsupported url. skip this url.
+		}
+		// NOTE: we must not authenticate on additional URLs as those
+		//       can be abused to leak credentials or tokens.  Please
+		//       refer to CVE-2020-15157 for more information.
+		resp, err = c.makeRequestToResolvedURL(ctx, http.MethodGet, url, nil, nil, -1, noAuth, nil)
+		if err == nil {
+			if resp.StatusCode != http.StatusOK {
+				err = fmt.Errorf("error fetching external blob from %q: %d (%s)", u, resp.StatusCode, http.StatusText(resp.StatusCode))
+				logrus.Debug(err)
+				resp.Body.Close()
+				continue
+			}
+			break
+		}
+	}
+	if resp == nil && err == nil {
+		return nil, 0, nil // fallback to non-external blob
+	}
+	if err != nil {
+		return nil, 0, err
+	}
+	return resp.Body, getBlobSize(resp), nil
+}
+
+func getBlobSize(resp *http.Response) int64 {
+	size, err := strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 64)
+	if err != nil {
+		size = -1
+	}
+	return size
+}
+
+// getBlob returns a stream for the specified blob in ref, and the blob’s size (or -1 if unknown).
+// The Digest field in BlobInfo is guaranteed to be provided, Size may be -1 and MediaType may be optionally provided.
+// May update BlobInfoCache, preferably after it knows for certain that a blob truly exists at a specific location.
+func (c *dockerClient) getBlob(ctx context.Context, ref dockerReference, info types.BlobInfo, cache types.BlobInfoCache) (io.ReadCloser, int64, error) {
+	if len(info.URLs) != 0 {
+		r, s, err := c.getExternalBlob(ctx, info.URLs)
+		if err != nil {
+			return nil, 0, err
+		} else if r != nil {
+			return r, s, nil
+		}
+	}
+
+	path := fmt.Sprintf(blobsPath, reference.Path(ref.ref), info.Digest.String())
+	logrus.Debugf("Downloading %s", path)
+	res, err := c.makeRequest(ctx, http.MethodGet, path, nil, nil, v2Auth, nil)
+	if err != nil {
+		return nil, 0, err
+	}
+	if err := httpResponseToError(res, "Error fetching blob"); err != nil {
+		res.Body.Close()
+		return nil, 0, err
+	}
+	cache.RecordKnownLocation(ref.Transport(), bicTransportScope(ref), info.Digest, newBICLocationReference(ref))
+	return res.Body, getBlobSize(res), nil
+}
+
+// getOCIDescriptorContents returns the contents a blob spcified by descriptor in ref, which must fit within limit.
+func (c *dockerClient) getOCIDescriptorContents(ctx context.Context, ref dockerReference, desc imgspecv1.Descriptor, maxSize int, cache types.BlobInfoCache) ([]byte, error) {
+	// Note that this copies all kinds of attachments: attestations, and whatever else is there,
+	// not just signatures. We leave the signature consumers to decide based on the MIME type.
+	reader, _, err := c.getBlob(ctx, ref, manifest.BlobInfoFromOCI1Descriptor(desc), cache)
+	if err != nil {
+		return nil, err
+	}
+	defer reader.Close()
+	payload, err := iolimits.ReadAtMost(reader, iolimits.MaxSignatureBodySize)
+	if err != nil {
+		return nil, fmt.Errorf("reading blob %s in %s: %w", desc.Digest.String(), ref.ref.Name(), err)
+	}
+	return payload, nil
+}
+
+// isManifestUnknownError returns true iff err from fetchManifest is a “manifest unknown” error.
+func isManifestUnknownError(err error) bool {
+	var errs errcode.Errors
+	if !errors.As(err, &errs) || len(errs) == 0 {
+		return false
+	}
+	err = errs[0]
+	ec, ok := err.(errcode.ErrorCoder)
+	if !ok {
+		return false
+	}
+	return ec.ErrorCode() == v2.ErrorCodeManifestUnknown
+}
+
+// getSigstoreAttachmentManifest loads and parses the manifest for sigstore attachments for
+// digest in ref.
+// It returns (nil, nil) if the manifest does not exist.
+func (c *dockerClient) getSigstoreAttachmentManifest(ctx context.Context, ref dockerReference, digest digest.Digest) (*manifest.OCI1, error) {
+	tag := sigstoreAttachmentTag(digest)
+	sigstoreRef, err := reference.WithTag(reference.TrimNamed(ref.ref), tag)
+	if err != nil {
+		return nil, err
+	}
+	logrus.Debugf("Looking for sigstore attachments in %s", sigstoreRef.String())
+	manifestBlob, mimeType, err := c.fetchManifest(ctx, ref, tag)
+	if err != nil {
+		// FIXME: Are we going to need better heuristics??
+		// This alone is probably a good enough reason for sigstore to be opt-in only,
+		// otherwise we would just break ordinary copies.
+		if isManifestUnknownError(err) {
+			logrus.Debugf("Fetching sigstore attachment manifest failed, assuming it does not exist: %v", err)
+			return nil, nil
+		}
+		logrus.Debugf("Fetching sigstore attachment manifest failed: %v", err)
+		return nil, err
+	}
+	if mimeType != imgspecv1.MediaTypeImageManifest {
+		// FIXME: Try anyway??
+		return nil, fmt.Errorf("unexpected MIME type for sigstore attachment manifest %s: %q",
+			sigstoreRef.String(), mimeType)
+	}
+	res, err := manifest.OCI1FromManifest(manifestBlob)
+	if err != nil {
+		return nil, fmt.Errorf("parsing manifest %s: %w", sigstoreRef.String(), err)
+	}
+	return res, nil
+}
+
 // getExtensionsSignatures returns signatures from the X-Registry-Supports-Signatures API extension,
 // using the original data structures.
 func (c *dockerClient) getExtensionsSignatures(ctx context.Context, ref dockerReference, manifestDigest digest.Digest) (*extensionSignatureList, error) {
@@ -812,7 +978,7 @@ func (c *dockerClient) getExtensionsSignatures(ctx context.Context, ref dockerRe
 	defer res.Body.Close()
 
 	if res.StatusCode != http.StatusOK {
-		return nil, errors.Wrapf(clientLib.HandleErrorResponse(res), "downloading signatures for %s in %s", manifestDigest, ref.ref.Name())
+		return nil, perrors.Wrapf(clientLib.HandleErrorResponse(res), "downloading signatures for %s in %s", manifestDigest, ref.ref.Name())
 	}
 
 	body, err := iolimits.ReadAtMost(res.Body, iolimits.MaxSignatureListBodySize)
@@ -822,7 +988,12 @@ func (c *dockerClient) getExtensionsSignatures(ctx context.Context, ref dockerRe
 
 	var parsedBody extensionSignatureList
 	if err := json.Unmarshal(body, &parsedBody); err != nil {
-		return nil, errors.Wrapf(err, "decoding signature list")
+		return nil, perrors.Wrapf(err, "decoding signature list")
 	}
 	return &parsedBody, nil
 }
+
+// sigstoreAttachmentTag returns a sigstore attachment tag for the specified digest.
+func sigstoreAttachmentTag(d digest.Digest) string {
+	return strings.Replace(d.String(), ":", "-", 1) + ".sig"
+}

vendor/github.com/containers/image/v5/docker/docker_image.go

@@ -3,17 +3,18 @@ package docker
 import (
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
 	"strings"
 
 	"github.com/containers/image/v5/docker/reference"
-	"github.com/containers/image/v5/image"
+	"github.com/containers/image/v5/internal/image"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 // Image is a Docker-specific implementation of types.ImageCloser with a few extra methods
@@ -56,13 +57,17 @@ func (i *Image) GetRepositoryTags(ctx context.Context) ([]string, error) {
 func GetRepositoryTags(ctx context.Context, sys *types.SystemContext, ref types.ImageReference) ([]string, error) {
 	dr, ok := ref.(dockerReference)
 	if !ok {
-		return nil, errors.Errorf("ref must be a dockerReference")
+		return nil, errors.New("ref must be a dockerReference")
 	}
 
-	path := fmt.Sprintf(tagsPath, reference.Path(dr.ref))
-	client, err := newDockerClientFromRef(sys, dr, false, "pull")
+	registryConfig, err := loadRegistryConfiguration(sys)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to create client")
+		return nil, err
+	}
+	path := fmt.Sprintf(tagsPath, reference.Path(dr.ref))
+	client, err := newDockerClientFromRef(sys, dr, registryConfig, false, "pull")
+	if err != nil {
+		return nil, perrors.Wrap(err, "failed to create client")
 	}
 
 	tags := make([]string, 0)
@@ -116,7 +121,7 @@ func GetRepositoryTags(ctx context.Context, sys *types.SystemContext, ref types.
 func GetDigest(ctx context.Context, sys *types.SystemContext, ref types.ImageReference) (digest.Digest, error) {
 	dr, ok := ref.(dockerReference)
 	if !ok {
-		return "", errors.Errorf("ref must be a dockerReference")
+		return "", errors.New("ref must be a dockerReference")
 	}
 
 	tagOrDigest, err := dr.tagOrDigest()
@@ -124,9 +129,13 @@ func GetDigest(ctx context.Context, sys *types.SystemContext, ref types.ImageRef
 		return "", err
 	}
 
-	client, err := newDockerClientFromRef(sys, dr, false, "pull")
+	registryConfig, err := loadRegistryConfiguration(sys)
 	if err != nil {
-		return "", errors.Wrap(err, "failed to create client")
+		return "", err
+	}
+	client, err := newDockerClientFromRef(sys, dr, registryConfig, false, "pull")
+	if err != nil {
+		return "", perrors.Wrap(err, "failed to create client")
 	}
 
 	path := fmt.Sprintf(manifestPath, reference.Path(dr.ref), tagOrDigest)
@@ -141,7 +150,7 @@ func GetDigest(ctx context.Context, sys *types.SystemContext, ref types.ImageRef
 
 	defer res.Body.Close()
 	if res.StatusCode != http.StatusOK {
-		return "", errors.Wrapf(registryHTTPResponseToError(res), "reading digest %s in %s", tagOrDigest, dr.ref.Name())
+		return "", perrors.Wrapf(registryHTTPResponseToError(res), "reading digest %s in %s", tagOrDigest, dr.ref.Name())
 	}
 
 	dig, err := digest.Parse(res.Header.Get("Docker-Content-Digest"))

vendor/github.com/containers/image/v5/docker/docker_image_dest.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"crypto/rand"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -15,20 +16,30 @@ import (
 
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/internal/blobinfocache"
+	"github.com/containers/image/v5/internal/imagedestination/impl"
+	"github.com/containers/image/v5/internal/imagedestination/stubs"
+	"github.com/containers/image/v5/internal/iolimits"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/internal/putblobdigest"
+	"github.com/containers/image/v5/internal/signature"
 	"github.com/containers/image/v5/internal/streamdigest"
 	"github.com/containers/image/v5/internal/uploadreader"
 	"github.com/containers/image/v5/manifest"
+	"github.com/containers/image/v5/pkg/blobinfocache/none"
 	"github.com/containers/image/v5/types"
 	"github.com/docker/distribution/registry/api/errcode"
 	v2 "github.com/docker/distribution/registry/api/v2"
 	"github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
 type dockerImageDestination struct {
+	impl.Compat
+	impl.PropertyMethodsInitialize
+	stubs.NoPutBlobPartialInitialize
+
 	ref dockerReference
 	c   *dockerClient
 	// State
@@ -36,15 +47,40 @@ type dockerImageDestination struct {
 }
 
 // newImageDestination creates a new ImageDestination for the specified image reference.
-func newImageDestination(sys *types.SystemContext, ref dockerReference) (types.ImageDestination, error) {
-	c, err := newDockerClientFromRef(sys, ref, true, "pull,push")
+func newImageDestination(sys *types.SystemContext, ref dockerReference) (private.ImageDestination, error) {
+	registryConfig, err := loadRegistryConfiguration(sys)
 	if err != nil {
 		return nil, err
 	}
-	return &dockerImageDestination{
+	c, err := newDockerClientFromRef(sys, ref, registryConfig, true, "pull,push")
+	if err != nil {
+		return nil, err
+	}
+	mimeTypes := []string{
+		imgspecv1.MediaTypeImageManifest,
+		manifest.DockerV2Schema2MediaType,
+		imgspecv1.MediaTypeImageIndex,
+		manifest.DockerV2ListMediaType,
+	}
+	if c.sys == nil || !c.sys.DockerDisableDestSchema1MIMETypes {
+		mimeTypes = append(mimeTypes, manifest.DockerV2Schema1SignedMediaType, manifest.DockerV2Schema1MediaType)
+	}
+
+	dest := &dockerImageDestination{
+		PropertyMethodsInitialize: impl.PropertyMethods(impl.Properties{
+			SupportedManifestMIMETypes:     mimeTypes,
+			DesiredLayerCompression:        types.Compress,
+			MustMatchRuntimeOS:             false,
+			IgnoresEmbeddedDockerReference: false, // We do want the manifest updated; older registry versions refuse manifests if the embedded reference does not match.
+			HasThreadSafePutBlob:           true,
+		}),
+		NoPutBlobPartialInitialize: stubs.NoPutBlobPartial(ref),
+
 		ref: ref,
 		c:   c,
-	}, nil
+	}
+	dest.Compat = impl.AddCompat(dest)
+	return dest, nil
 }
 
 // Reference returns the reference used to set up this destination.  Note that this should directly correspond to user's intent,
@@ -58,19 +94,6 @@ func (d *dockerImageDestination) Close() error {
 	return nil
 }
 
-func (d *dockerImageDestination) SupportedManifestMIMETypes() []string {
-	mimeTypes := []string{
-		imgspecv1.MediaTypeImageManifest,
-		manifest.DockerV2Schema2MediaType,
-		imgspecv1.MediaTypeImageIndex,
-		manifest.DockerV2ListMediaType,
-	}
-	if d.c.sys == nil || !d.c.sys.DockerDisableDestSchema1MIMETypes {
-		mimeTypes = append(mimeTypes, manifest.DockerV2Schema1SignedMediaType, manifest.DockerV2Schema1MediaType)
-	}
-	return mimeTypes
-}
-
 // SupportsSignatures returns an error (to be displayed to the user) if the destination certainly can't store signatures.
 // Note: It is still possible for PutSignatures to fail if SupportsSignatures returns nil.
 func (d *dockerImageDestination) SupportsSignatures(ctx context.Context) error {
@@ -83,32 +106,16 @@ func (d *dockerImageDestination) SupportsSignatures(ctx context.Context) error {
 	case d.c.signatureBase != nil:
 		return nil
 	default:
-		return errors.Errorf("Internal error: X-Registry-Supports-Signatures extension not supported, and lookaside should not be empty configuration")
+		return errors.New("Internal error: X-Registry-Supports-Signatures extension not supported, and lookaside should not be empty configuration")
 	}
 }
 
-func (d *dockerImageDestination) DesiredLayerCompression() types.LayerCompression {
-	return types.Compress
-}
-
 // AcceptsForeignLayerURLs returns false iff foreign layers in manifest should be actually
 // uploaded to the image destination, true otherwise.
 func (d *dockerImageDestination) AcceptsForeignLayerURLs() bool {
 	return true
 }
 
-// MustMatchRuntimeOS returns true iff the destination can store only images targeted for the current runtime architecture and OS. False otherwise.
-func (d *dockerImageDestination) MustMatchRuntimeOS() bool {
-	return false
-}
-
-// IgnoresEmbeddedDockerReference returns true iff the destination does not care about Image.EmbeddedDockerReferenceConflicts(),
-// and would prefer to receive an unmodified manifest instead of one modified for the destination.
-// Does not make a difference if Reference().DockerReference() is nil.
-func (d *dockerImageDestination) IgnoresEmbeddedDockerReference() bool {
-	return false // We do want the manifest updated; older registry versions refuse manifests if the embedded reference does not match.
-}
-
 // sizeCounter is an io.Writer which only counts the total size of its input.
 type sizeCounter struct{ size int64 }
 
@@ -117,19 +124,14 @@ func (c *sizeCounter) Write(p []byte) (n int, err error) {
 	return len(p), nil
 }
 
-// HasThreadSafePutBlob indicates whether PutBlob can be executed concurrently.
-func (d *dockerImageDestination) HasThreadSafePutBlob() bool {
-	return true
-}
-
-// PutBlob writes contents of stream and returns data representing the result (with all data filled in).
+// PutBlobWithOptions writes contents of stream and returns data representing the result.
 // inputInfo.Digest can be optionally provided if known; if provided, and stream is read to the end without error, the digest MUST match the stream contents.
 // inputInfo.Size is the expected length of stream, if known.
-// May update cache.
+// inputInfo.MediaType describes the blob format, if known.
 // WARNING: The contents of stream are being verified on the fly.  Until stream.Read() returns io.EOF, the contents of the data SHOULD NOT be available
 // to any other readers for download using the supplied digest.
 // If stream.Read() at any time, ESPECIALLY at end of input, returns an error, PutBlob MUST 1) fail, and 2) delete any data stored so far.
-func (d *dockerImageDestination) PutBlob(ctx context.Context, stream io.Reader, inputInfo types.BlobInfo, cache types.BlobInfoCache, isConfig bool) (types.BlobInfo, error) {
+func (d *dockerImageDestination) PutBlobWithOptions(ctx context.Context, stream io.Reader, inputInfo types.BlobInfo, options private.PutBlobOptions) (types.BlobInfo, error) {
 	// If requested, precompute the blob digest to prevent uploading layers that already exist on the registry.
 	// This functionality is particularly useful when BlobInfoCache has not been populated with compressed digests,
 	// the source blob is uncompressed, and the destination blob is being compressed "on the fly".
@@ -146,7 +148,7 @@ func (d *dockerImageDestination) PutBlob(ctx context.Context, stream io.Reader,
 	if inputInfo.Digest != "" {
 		// This should not really be necessary, at least the copy code calls TryReusingBlob automatically.
 		// Still, we need to check, if only because the "initiate upload" endpoint does not have a documented "blob already exists" return value.
-		haveBlob, reusedInfo, err := d.tryReusingExactBlob(ctx, inputInfo, cache)
+		haveBlob, reusedInfo, err := d.tryReusingExactBlob(ctx, inputInfo, options.Cache)
 		if err != nil {
 			return types.BlobInfo{}, err
 		}
@@ -165,11 +167,11 @@ func (d *dockerImageDestination) PutBlob(ctx context.Context, stream io.Reader,
 	defer res.Body.Close()
 	if res.StatusCode != http.StatusAccepted {
 		logrus.Debugf("Error initiating layer upload, response %#v", *res)
-		return types.BlobInfo{}, errors.Wrapf(registryHTTPResponseToError(res), "initiating layer upload to %s in %s", uploadPath, d.c.registry)
+		return types.BlobInfo{}, perrors.Wrapf(registryHTTPResponseToError(res), "initiating layer upload to %s in %s", uploadPath, d.c.registry)
 	}
 	uploadLocation, err := res.Location()
 	if err != nil {
-		return types.BlobInfo{}, errors.Wrap(err, "determining upload URL")
+		return types.BlobInfo{}, perrors.Wrap(err, "determining upload URL")
 	}
 
 	digester, stream := putblobdigest.DigestIfCanonicalUnknown(stream, inputInfo)
@@ -188,11 +190,11 @@ func (d *dockerImageDestination) PutBlob(ctx context.Context, stream io.Reader,
 		}
 		defer res.Body.Close()
 		if !successStatus(res.StatusCode) {
-			return nil, errors.Wrapf(registryHTTPResponseToError(res), "uploading layer chunked")
+			return nil, perrors.Wrapf(registryHTTPResponseToError(res), "uploading layer chunked")
 		}
 		uploadLocation, err := res.Location()
 		if err != nil {
-			return nil, errors.Wrap(err, "determining upload URL")
+			return nil, perrors.Wrap(err, "determining upload URL")
 		}
 		return uploadLocation, nil
 	}()
@@ -213,11 +215,11 @@ func (d *dockerImageDestination) PutBlob(ctx context.Context, stream io.Reader,
 	defer res.Body.Close()
 	if res.StatusCode != http.StatusCreated {
 		logrus.Debugf("Error uploading layer, response %#v", *res)
-		return types.BlobInfo{}, errors.Wrapf(registryHTTPResponseToError(res), "uploading layer to %s", uploadLocation)
+		return types.BlobInfo{}, perrors.Wrapf(registryHTTPResponseToError(res), "uploading layer to %s", uploadLocation)
 	}
 
 	logrus.Debugf("Upload of layer %s complete", blobDigest)
-	cache.RecordKnownLocation(d.ref.Transport(), bicTransportScope(d.ref), blobDigest, newBICLocationReference(d.ref))
+	options.Cache.RecordKnownLocation(d.ref.Transport(), bicTransportScope(d.ref), blobDigest, newBICLocationReference(d.ref))
 	return types.BlobInfo{Digest: blobDigest, Size: sizeCounter.size}, nil
 }
 
@@ -238,12 +240,12 @@ func (d *dockerImageDestination) blobExists(ctx context.Context, repo reference.
 		return true, getBlobSize(res), nil
 	case http.StatusUnauthorized:
 		logrus.Debugf("... not authorized")
-		return false, -1, errors.Wrapf(registryHTTPResponseToError(res), "checking whether a blob %s exists in %s", digest, repo.Name())
+		return false, -1, perrors.Wrapf(registryHTTPResponseToError(res), "checking whether a blob %s exists in %s", digest, repo.Name())
 	case http.StatusNotFound:
 		logrus.Debugf("... not present")
 		return false, -1, nil
 	default:
-		return false, -1, errors.Errorf("failed to read from destination repository %s: %d (%s)", reference.Path(d.ref.ref), res.StatusCode, http.StatusText(res.StatusCode))
+		return false, -1, fmt.Errorf("failed to read from destination repository %s: %d (%s)", reference.Path(d.ref.ref), res.StatusCode, http.StatusText(res.StatusCode))
 	}
 }
 
@@ -272,7 +274,7 @@ func (d *dockerImageDestination) mountBlob(ctx context.Context, srcRepo referenc
 		// NOTE: This does not really work in docker/distribution servers, which incorrectly require the "delete" action in the token's scope, and is thus entirely untested.
 		uploadLocation, err := res.Location()
 		if err != nil {
-			return errors.Wrap(err, "determining upload URL after a mount attempt")
+			return perrors.Wrap(err, "determining upload URL after a mount attempt")
 		}
 		logrus.Debugf("... started an upload instead of mounting, trying to cancel at %s", uploadLocation.Redacted())
 		res2, err := d.c.makeRequestToResolvedURL(ctx, http.MethodDelete, uploadLocation, nil, nil, -1, v2Auth, extraScope)
@@ -288,14 +290,14 @@ func (d *dockerImageDestination) mountBlob(ctx context.Context, srcRepo referenc
 		return fmt.Errorf("Mounting %s from %s to %s started an upload instead", srcDigest, srcRepo.Name(), d.ref.ref.Name())
 	default:
 		logrus.Debugf("Error mounting, response %#v", *res)
-		return errors.Wrapf(registryHTTPResponseToError(res), "mounting %s from %s to %s", srcDigest, srcRepo.Name(), d.ref.ref.Name())
+		return perrors.Wrapf(registryHTTPResponseToError(res), "mounting %s from %s to %s", srcDigest, srcRepo.Name(), d.ref.ref.Name())
 	}
 }
 
 // tryReusingExactBlob is a subset of TryReusingBlob which _only_ looks for exactly the specified
 // blob in the current repository, with no cross-repo reuse or mounting; cache may be updated, it is not read.
 // The caller must ensure info.Digest is set.
-func (d *dockerImageDestination) tryReusingExactBlob(ctx context.Context, info types.BlobInfo, cache types.BlobInfoCache) (bool, types.BlobInfo, error) {
+func (d *dockerImageDestination) tryReusingExactBlob(ctx context.Context, info types.BlobInfo, cache blobinfocache.BlobInfoCache2) (bool, types.BlobInfo, error) {
 	exists, size, err := d.blobExists(ctx, d.ref.ref, info.Digest, nil)
 	if err != nil {
 		return false, types.BlobInfo{}, err
@@ -307,22 +309,20 @@ func (d *dockerImageDestination) tryReusingExactBlob(ctx context.Context, info t
 	return false, types.BlobInfo{}, nil
 }
 
-// TryReusingBlob checks whether the transport already contains, or can efficiently reuse, a blob, and if so, applies it to the current destination
+// TryReusingBlobWithOptions checks whether the transport already contains, or can efficiently reuse, a blob, and if so, applies it to the current destination
 // (e.g. if the blob is a filesystem layer, this signifies that the changes it describes need to be applied again when composing a filesystem tree).
 // info.Digest must not be empty.
-// If canSubstitute, TryReusingBlob can use an equivalent equivalent of the desired blob; in that case the returned info may not match the input.
 // If the blob has been successfully reused, returns (true, info, nil); info must contain at least a digest and size, and may
 // include CompressionOperation and CompressionAlgorithm fields to indicate that a change to the compression type should be
 // reflected in the manifest that will be written.
 // If the transport can not reuse the requested blob, TryReusingBlob returns (false, {}, nil); it returns a non-nil error only on an unexpected failure.
-// May use and/or update cache.
-func (d *dockerImageDestination) TryReusingBlob(ctx context.Context, info types.BlobInfo, cache types.BlobInfoCache, canSubstitute bool) (bool, types.BlobInfo, error) {
+func (d *dockerImageDestination) TryReusingBlobWithOptions(ctx context.Context, info types.BlobInfo, options private.TryReusingBlobOptions) (bool, types.BlobInfo, error) {
 	if info.Digest == "" {
-		return false, types.BlobInfo{}, errors.Errorf(`"Can not check for a blob with unknown digest`)
+		return false, types.BlobInfo{}, errors.New("Can not check for a blob with unknown digest")
 	}
 
 	// First, check whether the blob happens to already exist at the destination.
-	haveBlob, reusedInfo, err := d.tryReusingExactBlob(ctx, info, cache)
+	haveBlob, reusedInfo, err := d.tryReusingExactBlob(ctx, info, options.Cache)
 	if err != nil {
 		return false, types.BlobInfo{}, err
 	}
@@ -331,8 +331,7 @@ func (d *dockerImageDestination) TryReusingBlob(ctx context.Context, info types.
 	}
 
 	// Then try reusing blobs from other locations.
-	bic := blobinfocache.FromBlobInfoCache(cache)
-	candidates := bic.CandidateLocations2(d.ref.Transport(), bicTransportScope(d.ref), info.Digest, canSubstitute)
+	candidates := options.Cache.CandidateLocations2(d.ref.Transport(), bicTransportScope(d.ref), info.Digest, options.CanSubstitute)
 	for _, candidate := range candidates {
 		candidateRepo, err := parseBICLocationReference(candidate.Location)
 		if err != nil {
@@ -386,7 +385,7 @@ func (d *dockerImageDestination) TryReusingBlob(ctx context.Context, info types.
 			}
 		}
 
-		bic.RecordKnownLocation(d.ref.Transport(), bicTransportScope(d.ref), candidate.Digest, newBICLocationReference(d.ref))
+		options.Cache.RecordKnownLocation(d.ref.Transport(), bicTransportScope(d.ref), candidate.Digest, newBICLocationReference(d.ref))
 
 		compressionOperation, compressionAlgorithm, err := blobinfocache.OperationAndAlgorithmForCompressor(candidate.CompressorName)
 		if err != nil {
@@ -417,14 +416,14 @@ func (d *dockerImageDestination) PutManifest(ctx context.Context, m []byte, inst
 		// Double-check that the manifest we've been given matches the digest we've been given.
 		matches, err := manifest.MatchesDigest(m, *instanceDigest)
 		if err != nil {
-			return errors.Wrapf(err, "digesting manifest in PutManifest")
+			return perrors.Wrapf(err, "digesting manifest in PutManifest")
 		}
 		if !matches {
 			manifestDigest, merr := manifest.Digest(m)
 			if merr != nil {
-				return errors.Wrapf(err, "Attempted to PutManifest using an explicitly specified digest (%q) that didn't match the manifest's digest (%v attempting to compute it)", instanceDigest.String(), merr)
+				return perrors.Wrapf(err, "Attempted to PutManifest using an explicitly specified digest (%q) that didn't match the manifest's digest (%v attempting to compute it)", instanceDigest.String(), merr)
 			}
-			return errors.Errorf("Attempted to PutManifest using an explicitly specified digest (%q) that didn't match the manifest's digest (%q)", instanceDigest.String(), manifestDigest.String())
+			return fmt.Errorf("Attempted to PutManifest using an explicitly specified digest (%q) that didn't match the manifest's digest (%q)", instanceDigest.String(), manifestDigest.String())
 		}
 	} else {
 		// Compute the digest of the main manifest, or the list if it's a list, so that we
@@ -442,7 +441,12 @@ func (d *dockerImageDestination) PutManifest(ctx context.Context, m []byte, inst
 		}
 	}
 
-	path := fmt.Sprintf(manifestPath, reference.Path(d.ref.ref), refTail)
+	return d.uploadManifest(ctx, m, refTail)
+}
+
+// uploadManifest writes manifest to tagOrDigest.
+func (d *dockerImageDestination) uploadManifest(ctx context.Context, m []byte, tagOrDigest string) error {
+	path := fmt.Sprintf(manifestPath, reference.Path(d.ref.ref), tagOrDigest)
 
 	headers := map[string][]string{}
 	mimeType := manifest.GuessMIMEType(m)
@@ -456,7 +460,7 @@ func (d *dockerImageDestination) PutManifest(ctx context.Context, m []byte, inst
 	defer res.Body.Close()
 	if !successStatus(res.StatusCode) {
 		rawErr := registryHTTPResponseToError(res)
-		err := errors.Wrapf(rawErr, "uploading manifest %s to %s", refTail, d.ref.ref.Name())
+		err := perrors.Wrapf(rawErr, "uploading manifest %s to %s", tagOrDigest, d.ref.ref.Name())
 		if isManifestInvalidError(rawErr) {
 			err = types.ManifestTypeRejectedError{Err: err}
 		}
@@ -514,38 +518,63 @@ func isManifestInvalidError(err error) bool {
 	}
 }
 
-// PutSignatures uploads a set of signatures to the relevant lookaside or API extension point.
-// If instanceDigest is not nil, it contains a digest of the specific manifest instance to upload the signatures for (when
-// the primary manifest is a manifest list); this should always be nil if the primary manifest is not a manifest list.
-func (d *dockerImageDestination) PutSignatures(ctx context.Context, signatures [][]byte, instanceDigest *digest.Digest) error {
-	// Do not fail if we don’t really need to support signatures.
-	if len(signatures) == 0 {
-		return nil
-	}
+// PutSignaturesWithFormat writes a set of signatures to the destination.
+// If instanceDigest is not nil, it contains a digest of the specific manifest instance to write or overwrite the signatures for
+// (when the primary manifest is a manifest list); this should always be nil if the primary manifest is not a manifest list.
+// MUST be called after PutManifest (signatures may reference manifest contents).
+func (d *dockerImageDestination) PutSignaturesWithFormat(ctx context.Context, signatures []signature.Signature, instanceDigest *digest.Digest) error {
 	if instanceDigest == nil {
 		if d.manifestDigest == "" {
 			// This shouldn’t happen, ImageDestination users are required to call PutManifest before PutSignatures
-			return errors.Errorf("Unknown manifest digest, can't add signatures")
+			return errors.New("Unknown manifest digest, can't add signatures")
 		}
 		instanceDigest = &d.manifestDigest
 	}
 
-	if err := d.c.detectProperties(ctx); err != nil {
-		return err
+	sigstoreSignatures := []signature.Sigstore{}
+	otherSignatures := []signature.Signature{}
+	for _, sig := range signatures {
+		if sigstoreSig, ok := sig.(signature.Sigstore); ok {
+			sigstoreSignatures = append(sigstoreSignatures, sigstoreSig)
+		} else {
+			otherSignatures = append(otherSignatures, sig)
+		}
 	}
-	switch {
-	case d.c.supportsSignatures:
-		return d.putSignaturesToAPIExtension(ctx, signatures, *instanceDigest)
-	case d.c.signatureBase != nil:
-		return d.putSignaturesToLookaside(signatures, *instanceDigest)
-	default:
-		return errors.Errorf("Internal error: X-Registry-Supports-Signatures extension not supported, and lookaside should not be empty configuration")
+
+	// Only write sigstores signatures to sigstores attachments. We _could_ store them to lookaside
+	// instead, but that would probably be rather surprising.
+	// FIXME: So should we enable sigstores in all cases? Or write in all cases, but opt-in to read?
+
+	if len(sigstoreSignatures) != 0 {
+		if err := d.putSignaturesToSigstoreAttachments(ctx, sigstoreSignatures, *instanceDigest); err != nil {
+			return err
+		}
 	}
+
+	if len(otherSignatures) != 0 {
+		if err := d.c.detectProperties(ctx); err != nil {
+			return err
+		}
+		switch {
+		case d.c.supportsSignatures:
+			if err := d.putSignaturesToAPIExtension(ctx, signatures, *instanceDigest); err != nil {
+				return err
+			}
+		case d.c.signatureBase != nil:
+			if err := d.putSignaturesToLookaside(signatures, *instanceDigest); err != nil {
+				return err
+			}
+		default:
+			return errors.New("Internal error: X-Registry-Supports-Signatures extension not supported, and lookaside should not be empty configuration")
+		}
+	}
+
+	return nil
 }
 
-// putSignaturesToLookaside implements PutSignatures() from the lookaside location configured in s.c.signatureBase,
+// putSignaturesToLookaside implements PutSignaturesWithFormat() from the lookaside location configured in s.c.signatureBase,
 // which is not nil, for a manifest with manifestDigest.
-func (d *dockerImageDestination) putSignaturesToLookaside(signatures [][]byte, manifestDigest digest.Digest) error {
+func (d *dockerImageDestination) putSignaturesToLookaside(signatures []signature.Signature, manifestDigest digest.Digest) error {
 	// FIXME? This overwrites files one at a time, definitely not atomic.
 	// A failure when updating signatures with a reordered copy could lose some of them.
 
@@ -556,7 +585,7 @@ func (d *dockerImageDestination) putSignaturesToLookaside(signatures [][]byte, m
 
 	// NOTE: Keep this in sync with docs/signature-protocols.md!
 	for i, signature := range signatures {
-		url := signatureStorageURL(d.c.signatureBase, manifestDigest, i)
+		url := lookasideStorageURL(d.c.signatureBase, manifestDigest, i)
 		err := d.putOneSignature(url, signature)
 		if err != nil {
 			return err
@@ -568,7 +597,7 @@ func (d *dockerImageDestination) putSignaturesToLookaside(signatures [][]byte, m
 	// is enough for dockerImageSource to stop looking for other signatures, so that
 	// is sufficient.
 	for i := len(signatures); ; i++ {
-		url := signatureStorageURL(d.c.signatureBase, manifestDigest, i)
+		url := lookasideStorageURL(d.c.signatureBase, manifestDigest, i)
 		missing, err := d.c.deleteOneSignature(url)
 		if err != nil {
 			return err
@@ -581,9 +610,9 @@ func (d *dockerImageDestination) putSignaturesToLookaside(signatures [][]byte, m
 	return nil
 }
 
-// putOneSignature stores one signature to url.
+// putOneSignature stores sig to url.
 // NOTE: Keep this in sync with docs/signature-protocols.md!
-func (d *dockerImageDestination) putOneSignature(url *url.URL, signature []byte) error {
+func (d *dockerImageDestination) putOneSignature(url *url.URL, sig signature.Signature) error {
 	switch url.Scheme {
 	case "file":
 		logrus.Debugf("Writing to %s", url.Path)
@@ -591,19 +620,157 @@ func (d *dockerImageDestination) putOneSignature(url *url.URL, signature []byte)
 		if err != nil {
 			return err
 		}
-		err = os.WriteFile(url.Path, signature, 0644)
+		blob, err := signature.Blob(sig)
+		if err != nil {
+			return err
+		}
+		err = os.WriteFile(url.Path, blob, 0644)
 		if err != nil {
 			return err
 		}
 		return nil
 
 	case "http", "https":
-		return errors.Errorf("Writing directly to a %s sigstore %s is not supported. Configure a sigstore-staging: location", url.Scheme, url.Redacted())
+		return fmt.Errorf("Writing directly to a %s lookaside %s is not supported. Configure a lookaside-staging: location", url.Scheme, url.Redacted())
 	default:
-		return errors.Errorf("Unsupported scheme when writing signature to %s", url.Redacted())
+		return fmt.Errorf("Unsupported scheme when writing signature to %s", url.Redacted())
 	}
 }
 
+func (d *dockerImageDestination) putSignaturesToSigstoreAttachments(ctx context.Context, signatures []signature.Sigstore, manifestDigest digest.Digest) error {
+	if !d.c.useSigstoreAttachments {
+		return errors.New("writing sigstore attachments is disabled by configuration")
+	}
+
+	ociManifest, err := d.c.getSigstoreAttachmentManifest(ctx, d.ref, manifestDigest)
+	if err != nil {
+		return nil
+	}
+	var ociConfig imgspecv1.Image // Most fields empty by default
+	if ociManifest == nil {
+		ociManifest = manifest.OCI1FromComponents(imgspecv1.Descriptor{
+			MediaType: imgspecv1.MediaTypeImageConfig,
+			Digest:    "", // We will fill this in later.
+			Size:      0,
+		}, nil)
+	} else {
+		logrus.Debugf("Fetching sigstore attachment config %s", ociManifest.Config.Digest.String())
+		// We don’t benefit from a real BlobInfoCache here because we never try to reuse/mount configs.
+		configBlob, err := d.c.getOCIDescriptorContents(ctx, d.ref, ociManifest.Config, iolimits.MaxConfigBodySize,
+			none.NoCache)
+		if err != nil {
+			return err
+		}
+		if err := json.Unmarshal(configBlob, &ociConfig); err != nil {
+			return fmt.Errorf("parsing sigstore attachment config %s in %s: %w", ociManifest.Config.Digest.String(),
+				d.ref.ref.Name(), err)
+		}
+	}
+
+	for _, sig := range signatures {
+		mimeType := sig.UntrustedMIMEType()
+		payloadBlob := sig.UntrustedPayload()
+		annotations := sig.UntrustedAnnotations()
+
+		alreadyOnRegistry := false
+		for _, layer := range ociManifest.Layers {
+			if layerMatchesSigstoreSignature(layer, mimeType, payloadBlob, annotations) {
+				logrus.Debugf("Signature with digest %s already exists on the registry", layer.Digest.String())
+				alreadyOnRegistry = true
+				break
+			}
+		}
+		if alreadyOnRegistry {
+			continue
+		}
+
+		// We don’t benefit from a real BlobInfoCache here because we never try to reuse/mount attachment payloads.
+		// That might eventually need to change if payloads grow to be not just signatures, but something
+		// significantly large.
+		sigDesc, err := d.putBlobBytesAsOCI(ctx, payloadBlob, mimeType, private.PutBlobOptions{
+			Cache:      none.NoCache,
+			IsConfig:   false,
+			EmptyLayer: false,
+			LayerIndex: nil,
+		})
+		if err != nil {
+			return err
+		}
+		sigDesc.Annotations = annotations
+		ociManifest.Layers = append(ociManifest.Layers, sigDesc)
+		ociConfig.RootFS.DiffIDs = append(ociConfig.RootFS.DiffIDs, sigDesc.Digest)
+		logrus.Debugf("Adding new signature, digest %s", sigDesc.Digest.String())
+	}
+
+	configBlob, err := json.Marshal(ociConfig)
+	if err != nil {
+		return err
+	}
+	logrus.Debugf("Uploading updated sigstore attachment config")
+	// We don’t benefit from a real BlobInfoCache here because we never try to reuse/mount configs.
+	configDesc, err := d.putBlobBytesAsOCI(ctx, configBlob, imgspecv1.MediaTypeImageConfig, private.PutBlobOptions{
+		Cache:      none.NoCache,
+		IsConfig:   true,
+		EmptyLayer: false,
+		LayerIndex: nil,
+	})
+	if err != nil {
+		return nil
+	}
+	ociManifest.Config = configDesc
+
+	manifestBlob, err := ociManifest.Serialize()
+	if err != nil {
+		return nil
+	}
+	logrus.Debugf("Uploading sigstore attachment manifest")
+	return d.uploadManifest(ctx, manifestBlob, sigstoreAttachmentTag(manifestDigest))
+}
+
+func layerMatchesSigstoreSignature(layer imgspecv1.Descriptor, mimeType string,
+	payloadBlob []byte, annotations map[string]string) bool {
+	if layer.MediaType != mimeType ||
+		layer.Size != int64(len(payloadBlob)) ||
+		// This is not quite correct, we should use the layer’s digest algorithm.
+		// But right now we don’t want to deal with corner cases like bad digest formats
+		// or unavailable algorithms; in the worst case we end up with duplicate signature
+		// entries.
+		layer.Digest.String() != digest.FromBytes(payloadBlob).String() {
+		return false
+	}
+	if len(layer.Annotations) != len(annotations) {
+		return false
+	}
+	for k, v1 := range layer.Annotations {
+		if v2, ok := annotations[k]; !ok || v1 != v2 {
+			return false
+		}
+	}
+	// All annotations in layer exist in sig, and the number of annotations is the same, so all annotations
+	// in sig also exist in layer.
+	return true
+}
+
+// putBlobBytesAsOCI uploads a blob with the specified contents, and returns an appropriate
+// OCI descriptior.
+func (d *dockerImageDestination) putBlobBytesAsOCI(ctx context.Context, contents []byte, mimeType string, options private.PutBlobOptions) (imgspecv1.Descriptor, error) {
+	blobDigest := digest.FromBytes(contents)
+	info, err := d.PutBlobWithOptions(ctx, bytes.NewReader(contents),
+		types.BlobInfo{
+			Digest:    blobDigest,
+			Size:      int64(len(contents)),
+			MediaType: mimeType,
+		}, options)
+	if err != nil {
+		return imgspecv1.Descriptor{}, fmt.Errorf("writing blob %s: %w", blobDigest.String(), err)
+	}
+	return imgspecv1.Descriptor{
+		MediaType: mimeType,
+		Digest:    info.Digest,
+		Size:      info.Size,
+	}, nil
+}
+
 // deleteOneSignature deletes a signature from url, if it exists.
 // If it successfully determines that the signature does not exist, returns (true, nil)
 // NOTE: Keep this in sync with docs/signature-protocols.md!
@@ -618,15 +785,15 @@ func (c *dockerClient) deleteOneSignature(url *url.URL) (missing bool, err error
 		return false, err
 
 	case "http", "https":
-		return false, errors.Errorf("Writing directly to a %s sigstore %s is not supported. Configure a sigstore-staging: location", url.Scheme, url.Redacted())
+		return false, fmt.Errorf("Writing directly to a %s lookaside %s is not supported. Configure a lookaside-staging: location", url.Scheme, url.Redacted())
 	default:
-		return false, errors.Errorf("Unsupported scheme when deleting signature from %s", url.Redacted())
+		return false, fmt.Errorf("Unsupported scheme when deleting signature from %s", url.Redacted())
 	}
 }
 
-// putSignaturesToAPIExtension implements PutSignatures() using the X-Registry-Supports-Signatures API extension,
+// putSignaturesToAPIExtension implements PutSignaturesWithFormat() using the X-Registry-Supports-Signatures API extension,
 // for a manifest with manifestDigest.
-func (d *dockerImageDestination) putSignaturesToAPIExtension(ctx context.Context, signatures [][]byte, manifestDigest digest.Digest) error {
+func (d *dockerImageDestination) putSignaturesToAPIExtension(ctx context.Context, signatures []signature.Signature, manifestDigest digest.Digest) error {
 	// Skip dealing with the manifest digest, or reading the old state, if not necessary.
 	if len(signatures) == 0 {
 		return nil
@@ -646,7 +813,13 @@ func (d *dockerImageDestination) putSignaturesToAPIExtension(ctx context.Context
 	}
 
 sigExists:
-	for _, newSig := range signatures {
+	for _, newSigWithFormat := range signatures {
+		newSigSimple, ok := newSigWithFormat.(signature.SimpleSigning)
+		if !ok {
+			return signature.UnsupportedFormatError(newSigWithFormat)
+		}
+		newSig := newSigSimple.UntrustedSignature()
+
 		for _, existingSig := range existingSignatures.Signatures {
 			if existingSig.Version == extensionSignatureSchemaVersion && existingSig.Type == extensionSignatureTypeAtomic && bytes.Equal(existingSig.Content, newSig) {
 				continue sigExists
@@ -659,7 +832,7 @@ sigExists:
 			randBytes := make([]byte, 16)
 			n, err := rand.Read(randBytes)
 			if err != nil || n != 16 {
-				return errors.Wrapf(err, "generating random signature len %d", n)
+				return perrors.Wrapf(err, "generating random signature len %d", n)
 			}
 			signatureName = fmt.Sprintf("%s@%032x", manifestDigest.String(), randBytes)
 			if _, ok := existingSigNames[signatureName]; !ok {
@@ -685,7 +858,7 @@ sigExists:
 		defer res.Body.Close()
 		if res.StatusCode != http.StatusCreated {
 			logrus.Debugf("Error uploading signature, status %d, %#v", res.StatusCode, res)
-			return errors.Wrapf(registryHTTPResponseToError(res), "uploading signature to %s in %s", path, d.c.registry)
+			return perrors.Wrapf(registryHTTPResponseToError(res), "uploading signature to %s in %s", path, d.c.registry)
 		}
 	}
 

vendor/github.com/containers/image/v5/docker/docker_image_src.go

@@ -2,6 +2,7 @@ package docker
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"mime"
@@ -9,22 +10,31 @@ import (
 	"net/http"
 	"net/url"
 	"os"
-	"strconv"
+	"regexp"
 	"strings"
 	"sync"
 
 	"github.com/containers/image/v5/docker/reference"
+	"github.com/containers/image/v5/internal/imagesource/impl"
+	"github.com/containers/image/v5/internal/imagesource/stubs"
 	"github.com/containers/image/v5/internal/iolimits"
 	"github.com/containers/image/v5/internal/private"
+	"github.com/containers/image/v5/internal/signature"
 	"github.com/containers/image/v5/manifest"
+	"github.com/containers/image/v5/pkg/blobinfocache/none"
 	"github.com/containers/image/v5/pkg/sysregistriesv2"
 	"github.com/containers/image/v5/types"
 	digest "github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
 type dockerImageSource struct {
+	impl.Compat
+	impl.PropertyMethodsInitialize
+	impl.DoesNotAffectLayerInfosForCopy
+	stubs.ImplementsGetBlobAt
+
 	logicalRef  dockerReference // The reference the user requested.
 	physicalRef dockerReference // The actual reference we are accessing (possibly a mirror)
 	c           *dockerClient
@@ -36,9 +46,13 @@ type dockerImageSource struct {
 // newImageSource creates a new ImageSource for the specified image reference.
 // The caller must call .Close() on the returned ImageSource.
 func newImageSource(ctx context.Context, sys *types.SystemContext, ref dockerReference) (*dockerImageSource, error) {
+	registryConfig, err := loadRegistryConfiguration(sys)
+	if err != nil {
+		return nil, err
+	}
 	registry, err := sysregistriesv2.FindRegistry(sys, ref.ref.Name())
 	if err != nil {
-		return nil, errors.Wrapf(err, "loading registries configuration")
+		return nil, perrors.Wrapf(err, "loading registries configuration")
 	}
 	if registry == nil {
 		// No configuration was found for the provided reference, so use the
@@ -71,7 +85,7 @@ func newImageSource(ctx context.Context, sys *types.SystemContext, ref dockerRef
 		} else {
 			logrus.Debugf("Trying to access %q", pullSource.Reference)
 		}
-		s, err := newImageSourceAttempt(ctx, sys, ref, pullSource)
+		s, err := newImageSourceAttempt(ctx, sys, ref, pullSource, registryConfig)
 		if err == nil {
 			return s, nil
 		}
@@ -95,14 +109,15 @@ func newImageSource(ctx context.Context, sys *types.SystemContext, ref dockerRef
 			// The paired [] at least have some chance of being unambiguous.
 			extras = append(extras, fmt.Sprintf("[%s: %v]", attempts[i].ref.String(), attempts[i].err))
 		}
-		return nil, errors.Wrapf(primary.err, "(Mirrors also failed: %s): %s", strings.Join(extras, "\n"), primary.ref.String())
+		return nil, perrors.Wrapf(primary.err, "(Mirrors also failed: %s): %s", strings.Join(extras, "\n"), primary.ref.String())
 	}
 }
 
 // newImageSourceAttempt is an internal helper for newImageSource. Everyone else must call newImageSource.
 // Given a logicalReference and a pullSource, return a dockerImageSource if it is reachable.
 // The caller must call .Close() on the returned ImageSource.
-func newImageSourceAttempt(ctx context.Context, sys *types.SystemContext, logicalRef dockerReference, pullSource sysregistriesv2.PullSource) (*dockerImageSource, error) {
+func newImageSourceAttempt(ctx context.Context, sys *types.SystemContext, logicalRef dockerReference, pullSource sysregistriesv2.PullSource,
+	registryConfig *registryConfiguration) (*dockerImageSource, error) {
 	physicalRef, err := newReference(pullSource.Reference)
 	if err != nil {
 		return nil, err
@@ -117,17 +132,22 @@ func newImageSourceAttempt(ctx context.Context, sys *types.SystemContext, logica
 		endpointSys = &copy
 	}
 
-	client, err := newDockerClientFromRef(endpointSys, physicalRef, false, "pull")
+	client, err := newDockerClientFromRef(endpointSys, physicalRef, registryConfig, false, "pull")
 	if err != nil {
 		return nil, err
 	}
 	client.tlsClientConfig.InsecureSkipVerify = pullSource.Endpoint.Insecure
 
 	s := &dockerImageSource{
+		PropertyMethodsInitialize: impl.PropertyMethods(impl.Properties{
+			HasThreadSafeGetBlob: true,
+		}),
+
 		logicalRef:  logicalRef,
 		physicalRef: physicalRef,
 		c:           client,
 	}
+	s.Compat = impl.AddCompat(s)
 
 	if err := s.ensureManifestIsLoaded(ctx); err != nil {
 		return nil, err
@@ -146,23 +166,6 @@ func (s *dockerImageSource) Close() error {
 	return nil
 }
 
-// SupportsGetBlobAt() returns true if GetBlobAt (BlobChunkAccessor) is supported.
-func (s *dockerImageSource) SupportsGetBlobAt() bool {
-	return true
-}
-
-// LayerInfosForCopy returns either nil (meaning the values in the manifest are fine), or updated values for the layer
-// blobsums that are listed in the image's manifest.  If values are returned, they should be used when using GetBlob()
-// to read the image's layers.
-// If instanceDigest is not nil, it contains a digest of the specific manifest instance to retrieve BlobInfos for
-// (when the primary manifest is a manifest list); this never happens if the primary manifest is not a manifest list
-// (e.g. if the source never returns manifest lists).
-// The Digest field is guaranteed to be provided; Size may be -1.
-// WARNING: The list may contain duplicates, and they are semantically relevant.
-func (s *dockerImageSource) LayerInfosForCopy(context.Context, *digest.Digest) ([]types.BlobInfo, error) {
-	return nil, nil
-}
-
 // simplifyContentType drops parameters from a HTTP media type (see https://tools.ietf.org/html/rfc7231#section-3.1.1.1)
 // Alternatively, an empty string is returned unchanged, and invalid values are "simplified" to an empty string.
 func simplifyContentType(contentType string) string {
@@ -192,25 +195,7 @@ func (s *dockerImageSource) GetManifest(ctx context.Context, instanceDigest *dig
 }
 
 func (s *dockerImageSource) fetchManifest(ctx context.Context, tagOrDigest string) ([]byte, string, error) {
-	path := fmt.Sprintf(manifestPath, reference.Path(s.physicalRef.ref), tagOrDigest)
-	headers := map[string][]string{
-		"Accept": manifest.DefaultRequestedManifestMIMETypes,
-	}
-	res, err := s.c.makeRequest(ctx, http.MethodGet, path, headers, nil, v2Auth, nil)
-	if err != nil {
-		return nil, "", err
-	}
-	logrus.Debugf("Content-Type from manifest GET is %q", res.Header.Get("Content-Type"))
-	defer res.Body.Close()
-	if res.StatusCode != http.StatusOK {
-		return nil, "", errors.Wrapf(registryHTTPResponseToError(res), "reading manifest %s in %s", tagOrDigest, s.physicalRef.ref.Name())
-	}
-
-	manblob, err := iolimits.ReadAtMost(res.Body, iolimits.MaxManifestBodySize)
-	if err != nil {
-		return nil, "", err
-	}
-	return manblob, simplifyContentType(res.Header.Get("Content-Type")), nil
+	return s.c.fetchManifest(ctx, s.physicalRef, tagOrDigest)
 }
 
 // ensureManifestIsLoaded sets s.cachedManifest and s.cachedManifestMIMEType
@@ -240,58 +225,6 @@ func (s *dockerImageSource) ensureManifestIsLoaded(ctx context.Context) error {
 	return nil
 }
 
-// getExternalBlob returns the reader of the first available blob URL from urls, which must not be empty.
-// This function can return nil reader when no url is supported by this function. In this case, the caller
-// should fallback to fetch the non-external blob (i.e. pull from the registry).
-func (s *dockerImageSource) getExternalBlob(ctx context.Context, urls []string) (io.ReadCloser, int64, error) {
-	var (
-		resp *http.Response
-		err  error
-	)
-	if len(urls) == 0 {
-		return nil, 0, errors.New("internal error: getExternalBlob called with no URLs")
-	}
-	for _, u := range urls {
-		url, err := url.Parse(u)
-		if err != nil || (url.Scheme != "http" && url.Scheme != "https") {
-			continue // unsupported url. skip this url.
-		}
-		// NOTE: we must not authenticate on additional URLs as those
-		//       can be abused to leak credentials or tokens.  Please
-		//       refer to CVE-2020-15157 for more information.
-		resp, err = s.c.makeRequestToResolvedURL(ctx, http.MethodGet, url, nil, nil, -1, noAuth, nil)
-		if err == nil {
-			if resp.StatusCode != http.StatusOK {
-				err = errors.Errorf("error fetching external blob from %q: %d (%s)", u, resp.StatusCode, http.StatusText(resp.StatusCode))
-				logrus.Debug(err)
-				resp.Body.Close()
-				continue
-			}
-			break
-		}
-	}
-	if resp == nil && err == nil {
-		return nil, 0, nil // fallback to non-external blob
-	}
-	if err != nil {
-		return nil, 0, err
-	}
-	return resp.Body, getBlobSize(resp), nil
-}
-
-func getBlobSize(resp *http.Response) int64 {
-	size, err := strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 64)
-	if err != nil {
-		size = -1
-	}
-	return size
-}
-
-// HasThreadSafeGetBlob indicates whether GetBlob can be executed concurrently.
-func (s *dockerImageSource) HasThreadSafeGetBlob() bool {
-	return true
-}
-
 // splitHTTP200ResponseToPartial splits a 200 response in multiple streams as specified by the chunks
 func splitHTTP200ResponseToPartial(streams chan io.ReadCloser, errs chan error, body io.ReadCloser, chunks []private.ImageSourceChunk) {
 	defer close(streams)
@@ -336,19 +269,23 @@ func handle206Response(streams chan io.ReadCloser, errs chan error, body io.Read
 	}
 	boundary, found := params["boundary"]
 	if !found {
-		errs <- errors.Errorf("could not find boundary")
+		errs <- errors.New("could not find boundary")
 		body.Close()
 		return
 	}
 	buffered := makeBufferedNetworkReader(body, 64, 16384)
 	defer buffered.Close()
 	mr := multipart.NewReader(buffered, boundary)
+	parts := 0
 	for {
 		p, err := mr.NextPart()
 		if err != nil {
 			if err != io.EOF {
 				errs <- err
 			}
+			if parts != len(chunks) {
+				errs <- errors.New("invalid number of chunks returned by the server")
+			}
 			return
 		}
 		s := signalCloseReader{
@@ -359,9 +296,34 @@ func handle206Response(streams chan io.ReadCloser, errs chan error, body io.Read
 		// NextPart() cannot be called while the current part
 		// is being read, so wait until it is closed
 		<-s.closed
+		parts++
 	}
 }
 
+var multipartByteRangesRe = regexp.MustCompile("multipart/byteranges; boundary=([A-Za-z-0-9:]+)")
+
+func parseMediaType(contentType string) (string, map[string]string, error) {
+	mediaType, params, err := mime.ParseMediaType(contentType)
+	if err != nil {
+		if err == mime.ErrInvalidMediaParameter {
+			// CloudFront returns an invalid MIME type, that contains an unquoted ":" in the boundary
+			// param, let's handle it here.
+			matches := multipartByteRangesRe.FindStringSubmatch(contentType)
+			if len(matches) == 2 {
+				mediaType = "multipart/byteranges"
+				params = map[string]string{
+					"boundary": matches[1],
+				}
+				err = nil
+			}
+		}
+		if err != nil {
+			return "", nil, err
+		}
+	}
+	return mediaType, params, err
+}
+
 // GetBlobAt returns a sequential channel of readers that contain data for the requested
 // blob chunks, and a channel that might get a single error value.
 // The specified chunks must be not overlapping and sorted by their offset.
@@ -397,7 +359,7 @@ func (s *dockerImageSource) GetBlobAt(ctx context.Context, info types.BlobInfo,
 		go splitHTTP200ResponseToPartial(streams, errs, res.Body, chunks)
 		return streams, errs, nil
 	case http.StatusPartialContent:
-		mediaType, params, err := mime.ParseMediaType(res.Header.Get("Content-Type"))
+		mediaType, params, err := parseMediaType(res.Header.Get("Content-Type"))
 		if err != nil {
 			return nil, nil, err
 		}
@@ -413,7 +375,7 @@ func (s *dockerImageSource) GetBlobAt(ctx context.Context, info types.BlobInfo,
 	default:
 		err := httpResponseToError(res, "Error fetching partial blob")
 		if err == nil {
-			err = errors.Errorf("invalid status code returned when fetching blob %d (%s)", res.StatusCode, http.StatusText(res.StatusCode))
+			err = fmt.Errorf("invalid status code returned when fetching blob %d (%s)", res.StatusCode, http.StatusText(res.StatusCode))
 		}
 		res.Body.Close()
 		return nil, nil, err
@@ -424,45 +386,41 @@ func (s *dockerImageSource) GetBlobAt(ctx context.Context, info types.BlobInfo,
 // The Digest field in BlobInfo is guaranteed to be provided, Size may be -1 and MediaType may be optionally provided.
 // May update BlobInfoCache, preferably after it knows for certain that a blob truly exists at a specific location.
 func (s *dockerImageSource) GetBlob(ctx context.Context, info types.BlobInfo, cache types.BlobInfoCache) (io.ReadCloser, int64, error) {
-	if len(info.URLs) != 0 {
-		r, s, err := s.getExternalBlob(ctx, info.URLs)
-		if err != nil {
-			return nil, 0, err
-		} else if r != nil {
-			return r, s, nil
-		}
-	}
-
-	path := fmt.Sprintf(blobsPath, reference.Path(s.physicalRef.ref), info.Digest.String())
-	logrus.Debugf("Downloading %s", path)
-	res, err := s.c.makeRequest(ctx, http.MethodGet, path, nil, nil, v2Auth, nil)
-	if err != nil {
-		return nil, 0, err
-	}
-	if err := httpResponseToError(res, "Error fetching blob"); err != nil {
-		res.Body.Close()
-		return nil, 0, err
-	}
-	cache.RecordKnownLocation(s.physicalRef.Transport(), bicTransportScope(s.physicalRef), info.Digest, newBICLocationReference(s.physicalRef))
-	return res.Body, getBlobSize(res), nil
+	return s.c.getBlob(ctx, s.physicalRef, info, cache)
 }
 
-// GetSignatures returns the image's signatures.  It may use a remote (= slow) service.
+// GetSignaturesWithFormat returns the image's signatures.  It may use a remote (= slow) service.
 // If instanceDigest is not nil, it contains a digest of the specific manifest instance to retrieve signatures for
 // (when the primary manifest is a manifest list); this never happens if the primary manifest is not a manifest list
 // (e.g. if the source never returns manifest lists).
-func (s *dockerImageSource) GetSignatures(ctx context.Context, instanceDigest *digest.Digest) ([][]byte, error) {
+func (s *dockerImageSource) GetSignaturesWithFormat(ctx context.Context, instanceDigest *digest.Digest) ([]signature.Signature, error) {
 	if err := s.c.detectProperties(ctx); err != nil {
 		return nil, err
 	}
+	var res []signature.Signature
 	switch {
 	case s.c.supportsSignatures:
-		return s.getSignaturesFromAPIExtension(ctx, instanceDigest)
+		sigs, err := s.getSignaturesFromAPIExtension(ctx, instanceDigest)
+		if err != nil {
+			return nil, err
+		}
+		res = append(res, sigs...)
 	case s.c.signatureBase != nil:
-		return s.getSignaturesFromLookaside(ctx, instanceDigest)
+		sigs, err := s.getSignaturesFromLookaside(ctx, instanceDigest)
+		if err != nil {
+			return nil, err
+		}
+		res = append(res, sigs...)
 	default:
-		return nil, errors.Errorf("Internal error: X-Registry-Supports-Signatures extension not supported, and lookaside should not be empty configuration")
+		return nil, errors.New("Internal error: X-Registry-Supports-Signatures extension not supported, and lookaside should not be empty configuration")
 	}
+
+	sigstoreSigs, err := s.getSignaturesFromSigstoreAttachments(ctx, instanceDigest)
+	if err != nil {
+		return nil, err
+	}
+	res = append(res, sigstoreSigs...)
+	return res, nil
 }
 
 // manifestDigest returns a digest of the manifest, from instanceDigest if non-nil; or from the supplied reference,
@@ -483,18 +441,18 @@ func (s *dockerImageSource) manifestDigest(ctx context.Context, instanceDigest *
 	return manifest.Digest(s.cachedManifest)
 }
 
-// getSignaturesFromLookaside implements GetSignatures() from the lookaside location configured in s.c.signatureBase,
+// getSignaturesFromLookaside implements GetSignaturesWithFormat() from the lookaside location configured in s.c.signatureBase,
 // which is not nil.
-func (s *dockerImageSource) getSignaturesFromLookaside(ctx context.Context, instanceDigest *digest.Digest) ([][]byte, error) {
+func (s *dockerImageSource) getSignaturesFromLookaside(ctx context.Context, instanceDigest *digest.Digest) ([]signature.Signature, error) {
 	manifestDigest, err := s.manifestDigest(ctx, instanceDigest)
 	if err != nil {
 		return nil, err
 	}
 
 	// NOTE: Keep this in sync with docs/signature-protocols.md!
-	signatures := [][]byte{}
+	signatures := []signature.Signature{}
 	for i := 0; ; i++ {
-		url := signatureStorageURL(s.c.signatureBase, manifestDigest, i)
+		url := lookasideStorageURL(s.c.signatureBase, manifestDigest, i)
 		signature, missing, err := s.getOneSignature(ctx, url)
 		if err != nil {
 			return nil, err
@@ -507,20 +465,24 @@ func (s *dockerImageSource) getSignaturesFromLookaside(ctx context.Context, inst
 	return signatures, nil
 }
 
-// getOneSignature downloads one signature from url.
-// If it successfully determines that the signature does not exist, returns with missing set to true and error set to nil.
+// getOneSignature downloads one signature from url, and returns (signature, false, nil)
+// If it successfully determines that the signature does not exist, returns (nil, true, nil).
 // NOTE: Keep this in sync with docs/signature-protocols.md!
-func (s *dockerImageSource) getOneSignature(ctx context.Context, url *url.URL) (signature []byte, missing bool, err error) {
+func (s *dockerImageSource) getOneSignature(ctx context.Context, url *url.URL) (signature.Signature, bool, error) {
 	switch url.Scheme {
 	case "file":
 		logrus.Debugf("Reading %s", url.Path)
-		sig, err := os.ReadFile(url.Path)
+		sigBlob, err := os.ReadFile(url.Path)
 		if err != nil {
 			if os.IsNotExist(err) {
 				return nil, true, nil
 			}
 			return nil, false, err
 		}
+		sig, err := signature.FromBlob(sigBlob)
+		if err != nil {
+			return nil, false, fmt.Errorf("parsing signature %q: %w", url.Path, err)
+		}
 		return sig, false, nil
 
 	case "http", "https":
@@ -537,21 +499,25 @@ func (s *dockerImageSource) getOneSignature(ctx context.Context, url *url.URL) (
 		if res.StatusCode == http.StatusNotFound {
 			return nil, true, nil
 		} else if res.StatusCode != http.StatusOK {
-			return nil, false, errors.Errorf("Error reading signature from %s: status %d (%s)", url.Redacted(), res.StatusCode, http.StatusText(res.StatusCode))
+			return nil, false, fmt.Errorf("reading signature from %s: status %d (%s)", url.Redacted(), res.StatusCode, http.StatusText(res.StatusCode))
 		}
-		sig, err := iolimits.ReadAtMost(res.Body, iolimits.MaxSignatureBodySize)
+		sigBlob, err := iolimits.ReadAtMost(res.Body, iolimits.MaxSignatureBodySize)
 		if err != nil {
 			return nil, false, err
 		}
+		sig, err := signature.FromBlob(sigBlob)
+		if err != nil {
+			return nil, false, fmt.Errorf("parsing signature %s: %w", url.Redacted(), err)
+		}
 		return sig, false, nil
 
 	default:
-		return nil, false, errors.Errorf("Unsupported scheme when reading signature from %s", url.Redacted())
+		return nil, false, fmt.Errorf("Unsupported scheme when reading signature from %s", url.Redacted())
 	}
 }
 
-// getSignaturesFromAPIExtension implements GetSignatures() using the X-Registry-Supports-Signatures API extension.
-func (s *dockerImageSource) getSignaturesFromAPIExtension(ctx context.Context, instanceDigest *digest.Digest) ([][]byte, error) {
+// getSignaturesFromAPIExtension implements GetSignaturesWithFormat() using the X-Registry-Supports-Signatures API extension.
+func (s *dockerImageSource) getSignaturesFromAPIExtension(ctx context.Context, instanceDigest *digest.Digest) ([]signature.Signature, error) {
 	manifestDigest, err := s.manifestDigest(ctx, instanceDigest)
 	if err != nil {
 		return nil, err
@@ -562,17 +528,59 @@ func (s *dockerImageSource) getSignaturesFromAPIExtension(ctx context.Context, i
 		return nil, err
 	}
 
-	var sigs [][]byte
+	var sigs []signature.Signature
 	for _, sig := range parsedBody.Signatures {
 		if sig.Version == extensionSignatureSchemaVersion && sig.Type == extensionSignatureTypeAtomic {
-			sigs = append(sigs, sig.Content)
+			sigs = append(sigs, signature.SimpleSigningFromBlob(sig.Content))
 		}
 	}
 	return sigs, nil
 }
 
+func (s *dockerImageSource) getSignaturesFromSigstoreAttachments(ctx context.Context, instanceDigest *digest.Digest) ([]signature.Signature, error) {
+	if !s.c.useSigstoreAttachments {
+		logrus.Debugf("Not looking for sigstore attachments: disabled by configuration")
+		return nil, nil
+	}
+
+	manifestDigest, err := s.manifestDigest(ctx, instanceDigest)
+	if err != nil {
+		return nil, err
+	}
+
+	ociManifest, err := s.c.getSigstoreAttachmentManifest(ctx, s.physicalRef, manifestDigest)
+	if err != nil {
+		return nil, err
+	}
+	if ociManifest == nil {
+		return nil, nil
+	}
+
+	logrus.Debugf("Found a sigstore attachment manifest with %d layers", len(ociManifest.Layers))
+	res := []signature.Signature{}
+	for layerIndex, layer := range ociManifest.Layers {
+		// Note that this copies all kinds of attachments: attestations, and whatever else is there,
+		// not just signatures. We leave the signature consumers to decide based on the MIME type.
+		logrus.Debugf("Fetching sigstore attachment %d/%d: %s", layerIndex+1, len(ociManifest.Layers), layer.Digest.String())
+		// We don’t benefit from a real BlobInfoCache here because we never try to reuse/mount attachment payloads.
+		// That might eventually need to change if payloads grow to be not just signatures, but something
+		// significantly large.
+		payload, err := s.c.getOCIDescriptorContents(ctx, s.physicalRef, layer, iolimits.MaxSignatureBodySize,
+			none.NoCache)
+		if err != nil {
+			return nil, err
+		}
+		res = append(res, signature.SigstoreFromComponents(layer.MediaType, payload, layer.Annotations))
+	}
+	return res, nil
+}
+
 // deleteImage deletes the named image from the registry, if supported.
 func deleteImage(ctx context.Context, sys *types.SystemContext, ref dockerReference) error {
+	registryConfig, err := loadRegistryConfiguration(sys)
+	if err != nil {
+		return err
+	}
 	// docker/distribution does not document what action should be used for deleting images.
 	//
 	// Current docker/distribution requires "pull" for reading the manifest and "delete" for deleting it.
@@ -580,7 +588,7 @@ func deleteImage(ctx context.Context, sys *types.SystemContext, ref dockerRefere
 	// OpenShift ignores the action string (both the password and the token is an OpenShift API token identifying a user).
 	//
 	// We have to hard-code a single string, luckily both docker/distribution and quay.io support "*" to mean "everything".
-	c, err := newDockerClientFromRef(sys, ref, true, "*")
+	c, err := newDockerClientFromRef(sys, ref, registryConfig, true, "*")
 	if err != nil {
 		return err
 	}
@@ -605,9 +613,9 @@ func deleteImage(ctx context.Context, sys *types.SystemContext, ref dockerRefere
 	switch get.StatusCode {
 	case http.StatusOK:
 	case http.StatusNotFound:
-		return errors.Errorf("Unable to delete %v. Image may not exist or is not stored with a v2 Schema in a v2 registry", ref.ref)
+		return fmt.Errorf("Unable to delete %v. Image may not exist or is not stored with a v2 Schema in a v2 registry", ref.ref)
 	default:
-		return errors.Errorf("Failed to delete %v: %s (%v)", ref.ref, manifestBody, get.Status)
+		return fmt.Errorf("Failed to delete %v: %s (%v)", ref.ref, manifestBody, get.Status)
 	}
 
 	manifestDigest, err := manifest.Digest(manifestBody)
@@ -629,11 +637,11 @@ func deleteImage(ctx context.Context, sys *types.SystemContext, ref dockerRefere
 		return err
 	}
 	if delete.StatusCode != http.StatusAccepted {
-		return errors.Errorf("Failed to delete %v: %s (%v)", deletePath, string(body), delete.Status)
+		return fmt.Errorf("Failed to delete %v: %s (%v)", deletePath, string(body), delete.Status)
 	}
 
 	for i := 0; ; i++ {
-		url := signatureStorageURL(c.signatureBase, manifestDigest, i)
+		url := lookasideStorageURL(c.signatureBase, manifestDigest, i)
 		missing, err := c.deleteOneSignature(url)
 		if err != nil {
 			return err

vendor/github.com/containers/image/v5/docker/docker_transport.go

@@ -2,6 +2,7 @@ package docker
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"strings"
 
@@ -9,7 +10,6 @@ import (
 	"github.com/containers/image/v5/docker/reference"
 	"github.com/containers/image/v5/transports"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
 )
 
 func init() {
@@ -49,7 +49,7 @@ type dockerReference struct {
 // ParseReference converts a string, which should not start with the ImageTransport.Name prefix, into an Docker ImageReference.
 func ParseReference(refString string) (types.ImageReference, error) {
 	if !strings.HasPrefix(refString, "//") {
-		return nil, errors.Errorf("docker: image reference %s does not start with //", refString)
+		return nil, fmt.Errorf("docker: image reference %s does not start with //", refString)
 	}
 	ref, err := reference.ParseNormalizedNamed(strings.TrimPrefix(refString, "//"))
 	if err != nil {
@@ -67,7 +67,7 @@ func NewReference(ref reference.Named) (types.ImageReference, error) {
 // newReference returns a dockerReference for a named reference.
 func newReference(ref reference.Named) (dockerReference, error) {
 	if reference.IsNameOnly(ref) {
-		return dockerReference{}, errors.Errorf("Docker reference %s has neither a tag nor a digest", reference.FamiliarString(ref))
+		return dockerReference{}, fmt.Errorf("Docker reference %s has neither a tag nor a digest", reference.FamiliarString(ref))
 	}
 	// A github.com/distribution/reference value can have a tag and a digest at the same time!
 	// The docker/distribution API does not really support that (we can’t ask for an image with a specific
@@ -77,7 +77,7 @@ func newReference(ref reference.Named) (dockerReference, error) {
 	_, isTagged := ref.(reference.NamedTagged)
 	_, isDigested := ref.(reference.Canonical)
 	if isTagged && isDigested {
-		return dockerReference{}, errors.Errorf("Docker references with both a tag and digest are currently not supported")
+		return dockerReference{}, errors.New("Docker references with both a tag and digest are currently not supported")
 	}
 
 	return dockerReference{
@@ -164,5 +164,5 @@ func (ref dockerReference) tagOrDigest() (string, error) {
 		return ref.Tag(), nil
 	}
 	// This should not happen, NewReference above refuses reference.IsNameOnly values.
-	return "", errors.Errorf("Internal inconsistency: Reference %s unexpectedly has neither a digest nor a tag", reference.FamiliarString(ref.ref))
+	return "", fmt.Errorf("Internal inconsistency: Reference %s unexpectedly has neither a digest nor a tag", reference.FamiliarString(ref.ref))
 }

vendor/github.com/containers/image/v5/docker/errors.go

@@ -6,7 +6,6 @@ import (
 	"net/http"
 
 	"github.com/docker/distribution/registry/client"
-	perrors "github.com/pkg/errors"
 )
 
 var (
@@ -42,7 +41,7 @@ func httpResponseToError(res *http.Response, context string) error {
 		if context != "" {
 			context = context + ": "
 		}
-		return perrors.Errorf("%sinvalid status code from registry %d (%s)", context, res.StatusCode, http.StatusText(res.StatusCode))
+		return fmt.Errorf("%sinvalid status code from registry %d (%s)", context, res.StatusCode, http.StatusText(res.StatusCode))
 	}
 }
 

vendor/github.com/containers/image/v5/docker/internal/tarfile/dest.go

@@ -4,20 +4,29 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
 	"io"
 
 	"github.com/containers/image/v5/docker/reference"
+	"github.com/containers/image/v5/internal/imagedestination/impl"
+	"github.com/containers/image/v5/internal/imagedestination/stubs"
 	"github.com/containers/image/v5/internal/iolimits"
+	"github.com/containers/image/v5/internal/private"
 	"github.com/containers/image/v5/internal/streamdigest"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
-// Destination is a partial implementation of types.ImageDestination for writing to an io.Writer.
+// Destination is a partial implementation of private.ImageDestination for writing to an io.Writer.
 type Destination struct {
+	impl.Compat
+	impl.PropertyMethodsInitialize
+	stubs.NoPutBlobPartialInitialize
+	stubs.NoSignaturesInitialize
+
 	archive  *Writer
 	repoTags []reference.NamedTagged
 	// Other state.
@@ -26,16 +35,34 @@ type Destination struct {
 }
 
 // NewDestination returns a tarfile.Destination adding images to the specified Writer.
-func NewDestination(sys *types.SystemContext, archive *Writer, ref reference.NamedTagged) *Destination {
+func NewDestination(sys *types.SystemContext, archive *Writer, transportName string, ref reference.NamedTagged) *Destination {
 	repoTags := []reference.NamedTagged{}
 	if ref != nil {
 		repoTags = append(repoTags, ref)
 	}
-	return &Destination{
+	dest := &Destination{
+		PropertyMethodsInitialize: impl.PropertyMethods(impl.Properties{
+			SupportedManifestMIMETypes: []string{
+				manifest.DockerV2Schema2MediaType, // We rely on the types.Image.UpdatedImage schema conversion capabilities.
+			},
+			DesiredLayerCompression:        types.Decompress,
+			AcceptsForeignLayerURLs:        false,
+			MustMatchRuntimeOS:             false,
+			IgnoresEmbeddedDockerReference: false, // N/A, we only accept schema2 images where EmbeddedDockerReferenceConflicts() is always false.
+			// The code _is_ actually thread-safe, but apart from computing sizes/digests of layers where
+			// this is unknown in advance, the actual copy is serialized by d.archive, so there probably isn’t
+			// much benefit from concurrency, mostly just extra CPU, memory and I/O contention.
+			HasThreadSafePutBlob: false,
+		}),
+		NoPutBlobPartialInitialize: stubs.NoPutBlobPartialRaw(transportName),
+		NoSignaturesInitialize:     stubs.NoSignatures("Storing signatures for docker tar files is not supported"),
+
 		archive:  archive,
 		repoTags: repoTags,
 		sysCtx:   sys,
 	}
+	dest.Compat = impl.AddCompat(dest)
+	return dest
 }
 
 // AddRepoTags adds the specified tags to the destination's repoTags.
@@ -43,54 +70,14 @@ func (d *Destination) AddRepoTags(tags []reference.NamedTagged) {
 	d.repoTags = append(d.repoTags, tags...)
 }
 
-// SupportedManifestMIMETypes tells which manifest mime types the destination supports
-// If an empty slice or nil it's returned, then any mime type can be tried to upload
-func (d *Destination) SupportedManifestMIMETypes() []string {
-	return []string{
-		manifest.DockerV2Schema2MediaType, // We rely on the types.Image.UpdatedImage schema conversion capabilities.
-	}
-}
-
-// SupportsSignatures returns an error (to be displayed to the user) if the destination certainly can't store signatures.
-// Note: It is still possible for PutSignatures to fail if SupportsSignatures returns nil.
-func (d *Destination) SupportsSignatures(ctx context.Context) error {
-	return errors.Errorf("Storing signatures for docker tar files is not supported")
-}
-
-// AcceptsForeignLayerURLs returns false iff foreign layers in manifest should be actually
-// uploaded to the image destination, true otherwise.
-func (d *Destination) AcceptsForeignLayerURLs() bool {
-	return false
-}
-
-// MustMatchRuntimeOS returns true iff the destination can store only images targeted for the current runtime architecture and OS. False otherwise.
-func (d *Destination) MustMatchRuntimeOS() bool {
-	return false
-}
-
-// IgnoresEmbeddedDockerReference returns true iff the destination does not care about Image.EmbeddedDockerReferenceConflicts(),
-// and would prefer to receive an unmodified manifest instead of one modified for the destination.
-// Does not make a difference if Reference().DockerReference() is nil.
-func (d *Destination) IgnoresEmbeddedDockerReference() bool {
-	return false // N/A, we only accept schema2 images where EmbeddedDockerReferenceConflicts() is always false.
-}
-
-// HasThreadSafePutBlob indicates whether PutBlob can be executed concurrently.
-func (d *Destination) HasThreadSafePutBlob() bool {
-	// The code _is_ actually thread-safe, but apart from computing sizes/digests of layers where
-	// this is unknown in advance, the actual copy is serialized by d.archive, so there probably isn’t
-	// much benefit from concurrency, mostly just extra CPU, memory and I/O contention.
-	return false
-}
-
-// PutBlob writes contents of stream and returns data representing the result (with all data filled in).
+// PutBlobWithOptions writes contents of stream and returns data representing the result.
 // inputInfo.Digest can be optionally provided if known; if provided, and stream is read to the end without error, the digest MUST match the stream contents.
 // inputInfo.Size is the expected length of stream, if known.
-// May update cache.
+// inputInfo.MediaType describes the blob format, if known.
 // WARNING: The contents of stream are being verified on the fly.  Until stream.Read() returns io.EOF, the contents of the data SHOULD NOT be available
 // to any other readers for download using the supplied digest.
 // If stream.Read() at any time, ESPECIALLY at end of input, returns an error, PutBlob MUST 1) fail, and 2) delete any data stored so far.
-func (d *Destination) PutBlob(ctx context.Context, stream io.Reader, inputInfo types.BlobInfo, cache types.BlobInfoCache, isConfig bool) (types.BlobInfo, error) {
+func (d *Destination) PutBlobWithOptions(ctx context.Context, stream io.Reader, inputInfo types.BlobInfo, options private.PutBlobOptions) (types.BlobInfo, error) {
 	// Ouch, we need to stream the blob into a temporary file just to determine the size.
 	// When the layer is decompressed, we also have to generate the digest on uncompressed data.
 	if inputInfo.Size == -1 || inputInfo.Digest == "" {
@@ -118,14 +105,14 @@ func (d *Destination) PutBlob(ctx context.Context, stream io.Reader, inputInfo t
 		return reusedInfo, nil
 	}
 
-	if isConfig {
+	if options.IsConfig {
 		buf, err := iolimits.ReadAtMost(stream, iolimits.MaxConfigBodySize)
 		if err != nil {
-			return types.BlobInfo{}, errors.Wrap(err, "reading Config file stream")
+			return types.BlobInfo{}, perrors.Wrap(err, "reading Config file stream")
 		}
 		d.config = buf
 		if err := d.archive.sendFileLocked(d.archive.configPath(inputInfo.Digest), inputInfo.Size, bytes.NewReader(buf)); err != nil {
-			return types.BlobInfo{}, errors.Wrap(err, "writing Config file")
+			return types.BlobInfo{}, perrors.Wrap(err, "writing Config file")
 		}
 	} else {
 		if err := d.archive.sendFileLocked(d.archive.physicalLayerPath(inputInfo.Digest), inputInfo.Size, stream); err != nil {
@@ -136,16 +123,14 @@ func (d *Destination) PutBlob(ctx context.Context, stream io.Reader, inputInfo t
 	return types.BlobInfo{Digest: inputInfo.Digest, Size: inputInfo.Size}, nil
 }
 
-// TryReusingBlob checks whether the transport already contains, or can efficiently reuse, a blob, and if so, applies it to the current destination
+// TryReusingBlobWithOptions checks whether the transport already contains, or can efficiently reuse, a blob, and if so, applies it to the current destination
 // (e.g. if the blob is a filesystem layer, this signifies that the changes it describes need to be applied again when composing a filesystem tree).
 // info.Digest must not be empty.
-// If canSubstitute, TryReusingBlob can use an equivalent equivalent of the desired blob; in that case the returned info may not match the input.
 // If the blob has been successfully reused, returns (true, info, nil); info must contain at least a digest and size, and may
 // include CompressionOperation and CompressionAlgorithm fields to indicate that a change to the compression type should be
 // reflected in the manifest that will be written.
 // If the transport can not reuse the requested blob, TryReusingBlob returns (false, {}, nil); it returns a non-nil error only on an unexpected failure.
-// May use and/or update cache.
-func (d *Destination) TryReusingBlob(ctx context.Context, info types.BlobInfo, cache types.BlobInfoCache, canSubstitute bool) (bool, types.BlobInfo, error) {
+func (d *Destination) TryReusingBlobWithOptions(ctx context.Context, info types.BlobInfo, options private.TryReusingBlobOptions) (bool, types.BlobInfo, error) {
 	if err := d.archive.lock(); err != nil {
 		return false, types.BlobInfo{}, err
 	}
@@ -168,10 +153,10 @@ func (d *Destination) PutManifest(ctx context.Context, m []byte, instanceDigest
 	// so the caller trying a different manifest kind would be pointless.
 	var man manifest.Schema2
 	if err := json.Unmarshal(m, &man); err != nil {
-		return errors.Wrap(err, "parsing manifest")
+		return perrors.Wrap(err, "parsing manifest")
 	}
 	if man.SchemaVersion != 2 || man.MediaType != manifest.DockerV2Schema2MediaType {
-		return errors.Errorf("Unsupported manifest type, need a Docker schema 2 manifest")
+		return errors.New("Unsupported manifest type, need a Docker schema 2 manifest")
 	}
 
 	if err := d.archive.lock(); err != nil {
@@ -185,16 +170,3 @@ func (d *Destination) PutManifest(ctx context.Context, m []byte, instanceDigest
 
 	return d.archive.ensureManifestItemLocked(man.LayersDescriptors, man.ConfigDescriptor.Digest, d.repoTags)
 }
-
-// PutSignatures would add the given signatures to the docker tarfile (currently not supported).
-// The instanceDigest value is expected to always be nil, because this transport does not support manifest lists, so
-// there can be no secondary manifests.  MUST be called after PutManifest (signatures reference manifest contents).
-func (d *Destination) PutSignatures(ctx context.Context, signatures [][]byte, instanceDigest *digest.Digest) error {
-	if instanceDigest != nil {
-		return errors.Errorf(`Manifest lists are not supported for docker tar files`)
-	}
-	if len(signatures) != 0 {
-		return errors.Errorf("Storing signatures for docker tar files is not supported")
-	}
-	return nil
-}

vendor/github.com/containers/image/v5/docker/internal/tarfile/reader.go

@@ -3,6 +3,8 @@ package tarfile
 import (
 	"archive/tar"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path"
@@ -12,7 +14,7 @@ import (
 	"github.com/containers/image/v5/internal/tmpdir"
 	"github.com/containers/image/v5/pkg/compression"
 	"github.com/containers/image/v5/types"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 // Reader is a ((docker save)-formatted) tar archive that allows random access to any component.
@@ -29,7 +31,7 @@ type Reader struct {
 func NewReaderFromFile(sys *types.SystemContext, path string) (*Reader, error) {
 	file, err := os.Open(path)
 	if err != nil {
-		return nil, errors.Wrapf(err, "opening file %q", path)
+		return nil, perrors.Wrapf(err, "opening file %q", path)
 	}
 	defer file.Close()
 
@@ -37,7 +39,7 @@ func NewReaderFromFile(sys *types.SystemContext, path string) (*Reader, error) {
 	// as a source. Otherwise we pass the stream to NewReaderFromStream.
 	stream, isCompressed, err := compression.AutoDecompress(file)
 	if err != nil {
-		return nil, errors.Wrapf(err, "detecting compression for file %q", path)
+		return nil, perrors.Wrapf(err, "detecting compression for file %q", path)
 	}
 	defer stream.Close()
 	if !isCompressed {
@@ -54,7 +56,7 @@ func NewReaderFromStream(sys *types.SystemContext, inputStream io.Reader) (*Read
 	// Save inputStream to a temporary file
 	tarCopyFile, err := os.CreateTemp(tmpdir.TemporaryDirectoryForBigFiles(sys), "docker-tar")
 	if err != nil {
-		return nil, errors.Wrap(err, "creating temporary file")
+		return nil, perrors.Wrap(err, "creating temporary file")
 	}
 	defer tarCopyFile.Close()
 
@@ -70,7 +72,7 @@ func NewReaderFromStream(sys *types.SystemContext, inputStream io.Reader) (*Read
 	// giving users really confusing "invalid tar header" errors).
 	uncompressedStream, _, err := compression.AutoDecompress(inputStream)
 	if err != nil {
-		return nil, errors.Wrap(err, "auto-decompressing input")
+		return nil, perrors.Wrap(err, "auto-decompressing input")
 	}
 	defer uncompressedStream.Close()
 
@@ -79,7 +81,7 @@ func NewReaderFromStream(sys *types.SystemContext, inputStream io.Reader) (*Read
 	// TODO: This can take quite some time, and should ideally be cancellable
 	//       using a context.Context.
 	if _, err := io.Copy(tarCopyFile, uncompressedStream); err != nil {
-		return nil, errors.Wrapf(err, "copying contents to temporary file %q", tarCopyFile.Name())
+		return nil, perrors.Wrapf(err, "copying contents to temporary file %q", tarCopyFile.Name())
 	}
 	succeeded = true
 
@@ -112,7 +114,7 @@ func newReader(path string, removeOnClose bool) (*Reader, error) {
 		return nil, err
 	}
 	if err := json.Unmarshal(bytes, &r.Manifest); err != nil {
-		return nil, errors.Wrap(err, "decoding tar manifest.json")
+		return nil, perrors.Wrap(err, "decoding tar manifest.json")
 	}
 
 	succeeded = true
@@ -136,7 +138,7 @@ func (r *Reader) Close() error {
 func (r *Reader) ChooseManifestItem(ref reference.NamedTagged, sourceIndex int) (*ManifestItem, int, error) {
 	switch {
 	case ref != nil && sourceIndex != -1:
-		return nil, -1, errors.Errorf("Internal error: Cannot have both ref %s and source index @%d",
+		return nil, -1, fmt.Errorf("Internal error: Cannot have both ref %s and source index @%d",
 			ref.String(), sourceIndex)
 
 	case ref != nil:
@@ -145,25 +147,25 @@ func (r *Reader) ChooseManifestItem(ref reference.NamedTagged, sourceIndex int)
 			for tagIndex, tag := range r.Manifest[i].RepoTags {
 				parsedTag, err := reference.ParseNormalizedNamed(tag)
 				if err != nil {
-					return nil, -1, errors.Wrapf(err, "Invalid tag %#v in manifest.json item @%d", tag, i)
+					return nil, -1, perrors.Wrapf(err, "Invalid tag %#v in manifest.json item @%d", tag, i)
 				}
 				if parsedTag.String() == refString {
 					return &r.Manifest[i], tagIndex, nil
 				}
 			}
 		}
-		return nil, -1, errors.Errorf("Tag %#v not found", refString)
+		return nil, -1, fmt.Errorf("Tag %#v not found", refString)
 
 	case sourceIndex != -1:
 		if sourceIndex >= len(r.Manifest) {
-			return nil, -1, errors.Errorf("Invalid source index @%d, only %d manifest items available",
+			return nil, -1, fmt.Errorf("Invalid source index @%d, only %d manifest items available",
 				sourceIndex, len(r.Manifest))
 		}
 		return &r.Manifest[sourceIndex], -1, nil
 
 	default:
 		if len(r.Manifest) != 1 {
-			return nil, -1, errors.Errorf("Unexpected tar manifest.json: expected 1 item, got %d", len(r.Manifest))
+			return nil, -1, fmt.Errorf("Unexpected tar manifest.json: expected 1 item, got %d", len(r.Manifest))
 		}
 		return &r.Manifest[0], -1, nil
 	}
@@ -226,7 +228,7 @@ func (r *Reader) openTarComponent(componentPath string) (io.ReadCloser, error) {
 	}
 
 	if !header.FileInfo().Mode().IsRegular() {
-		return nil, errors.Errorf("Error reading tar archive component %s: not a regular file", header.Name)
+		return nil, fmt.Errorf("Error reading tar archive component %s: not a regular file", header.Name)
 	}
 	succeeded = true
 	return &tarReadCloser{Reader: tarReader, backingFile: f}, nil
@@ -257,7 +259,7 @@ func findTarComponent(inputFile io.Reader, componentPath string) (*tar.Reader, *
 func (r *Reader) readTarComponent(path string, limit int) ([]byte, error) {
 	file, err := r.openTarComponent(path)
 	if err != nil {
-		return nil, errors.Wrapf(err, "loading tar component %s", path)
+		return nil, perrors.Wrapf(err, "loading tar component %s", path)
 	}
 	defer file.Close()
 	bytes, err := iolimits.ReadAtMost(file, limit)

vendor/github.com/containers/image/v5/docker/internal/tarfile/src.go

@@ -5,22 +5,32 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"io"
 	"os"
 	"path"
 	"sync"
 
 	"github.com/containers/image/v5/docker/reference"
+	"github.com/containers/image/v5/internal/imagesource/impl"
+	"github.com/containers/image/v5/internal/imagesource/stubs"
 	"github.com/containers/image/v5/internal/iolimits"
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/pkg/compression"
 	"github.com/containers/image/v5/types"
 	digest "github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 )
 
 // Source is a partial implementation of types.ImageSource for reading from tarPath.
 type Source struct {
+	impl.Compat
+	impl.PropertyMethodsInitialize
+	impl.NoSignatures
+	impl.DoesNotAffectLayerInfosForCopy
+	stubs.NoGetBlobAtInitialize
+
 	archive      *Reader
 	closeArchive bool // .Close() the archive when the source is closed.
 	// If ref is nil and sourceIndex is -1, indicates the only image in the archive.
@@ -46,13 +56,20 @@ type layerInfo struct {
 // NewSource returns a tarfile.Source for an image in the specified archive matching ref
 // and sourceIndex (or the only image if they are (nil, -1)).
 // The archive will be closed if closeArchive
-func NewSource(archive *Reader, closeArchive bool, ref reference.NamedTagged, sourceIndex int) *Source {
-	return &Source{
+func NewSource(archive *Reader, closeArchive bool, transportName string, ref reference.NamedTagged, sourceIndex int) *Source {
+	s := &Source{
+		PropertyMethodsInitialize: impl.PropertyMethods(impl.Properties{
+			HasThreadSafeGetBlob: true,
+		}),
+		NoGetBlobAtInitialize: stubs.NoGetBlobAtRaw(transportName),
+
 		archive:      archive,
 		closeArchive: closeArchive,
 		ref:          ref,
 		sourceIndex:  sourceIndex,
 	}
+	s.Compat = impl.AddCompat(s)
+	return s
 }
 
 // ensureCachedDataIsPresent loads data necessary for any of the public accessors.
@@ -79,10 +96,10 @@ func (s *Source) ensureCachedDataIsPresentPrivate() error {
 	}
 	var parsedConfig manifest.Schema2Image // There's a lot of info there, but we only really care about layer DiffIDs.
 	if err := json.Unmarshal(configBytes, &parsedConfig); err != nil {
-		return errors.Wrapf(err, "decoding tar config %s", tarManifest.Config)
+		return perrors.Wrapf(err, "decoding tar config %s", tarManifest.Config)
 	}
 	if parsedConfig.RootFS == nil {
-		return errors.Errorf("Invalid image config (rootFS is not set): %s", tarManifest.Config)
+		return fmt.Errorf("Invalid image config (rootFS is not set): %s", tarManifest.Config)
 	}
 
 	knownLayers, err := s.prepareLayerData(tarManifest, &parsedConfig)
@@ -115,7 +132,7 @@ func (s *Source) TarManifest() []ManifestItem {
 func (s *Source) prepareLayerData(tarManifest *ManifestItem, parsedConfig *manifest.Schema2Image) (map[digest.Digest]*layerInfo, error) {
 	// Collect layer data available in manifest and config.
 	if len(tarManifest.Layers) != len(parsedConfig.RootFS.DiffIDs) {
-		return nil, errors.Errorf("Inconsistent layer count: %d in manifest, %d in config", len(tarManifest.Layers), len(parsedConfig.RootFS.DiffIDs))
+		return nil, fmt.Errorf("Inconsistent layer count: %d in manifest, %d in config", len(tarManifest.Layers), len(parsedConfig.RootFS.DiffIDs))
 	}
 	knownLayers := map[digest.Digest]*layerInfo{}
 	unknownLayerSizes := map[string]*layerInfo{} // Points into knownLayers, a "to do list" of items with unknown sizes.
@@ -128,7 +145,7 @@ func (s *Source) prepareLayerData(tarManifest *ManifestItem, parsedConfig *manif
 		}
 		layerPath := path.Clean(tarManifest.Layers[i])
 		if _, ok := unknownLayerSizes[layerPath]; ok {
-			return nil, errors.Errorf("Layer tarfile %s used for two different DiffID values", layerPath)
+			return nil, fmt.Errorf("Layer tarfile %s used for two different DiffID values", layerPath)
 		}
 		li := &layerInfo{ // A new element in each iteration
 			path: layerPath,
@@ -163,7 +180,7 @@ func (s *Source) prepareLayerData(tarManifest *ManifestItem, parsedConfig *manif
 			// the slower method of checking if it's compressed.
 			uncompressedStream, isCompressed, err := compression.AutoDecompress(t)
 			if err != nil {
-				return nil, errors.Wrapf(err, "auto-decompressing %s to determine its size", layerPath)
+				return nil, perrors.Wrapf(err, "auto-decompressing %s to determine its size", layerPath)
 			}
 			defer uncompressedStream.Close()
 
@@ -171,7 +188,7 @@ func (s *Source) prepareLayerData(tarManifest *ManifestItem, parsedConfig *manif
 			if isCompressed {
 				uncompressedSize, err = io.Copy(io.Discard, uncompressedStream)
 				if err != nil {
-					return nil, errors.Wrapf(err, "reading %s to find its size", layerPath)
+					return nil, perrors.Wrapf(err, "reading %s to find its size", layerPath)
 				}
 			}
 			li.size = uncompressedSize
@@ -179,7 +196,7 @@ func (s *Source) prepareLayerData(tarManifest *ManifestItem, parsedConfig *manif
 		}
 	}
 	if len(unknownLayerSizes) != 0 {
-		return nil, errors.Errorf("Some layer tarfiles are missing in the tarball") // This could do with a better error reporting, if this ever happened in practice.
+		return nil, errors.New("Some layer tarfiles are missing in the tarball") // This could do with a better error reporting, if this ever happened in practice.
 	}
 
 	return knownLayers, nil
@@ -213,7 +230,7 @@ func (s *Source) GetManifest(ctx context.Context, instanceDigest *digest.Digest)
 		for _, diffID := range s.orderedDiffIDList {
 			li, ok := s.knownLayers[diffID]
 			if !ok {
-				return nil, "", errors.Errorf("Internal inconsistency: Information about layer %s missing", diffID)
+				return nil, "", fmt.Errorf("Internal inconsistency: Information about layer %s missing", diffID)
 			}
 			m.LayersDescriptors = append(m.LayersDescriptors, manifest.Schema2Descriptor{
 				Digest:    diffID, // diffID is a digest of the uncompressed tarball
@@ -248,11 +265,6 @@ func (r uncompressedReadCloser) Close() error {
 	return res
 }
 
-// HasThreadSafeGetBlob indicates whether GetBlob can be executed concurrently.
-func (s *Source) HasThreadSafeGetBlob() bool {
-	return true
-}
-
 // GetBlob returns a stream for the specified blob, and the blob’s size (or -1 if unknown).
 // The Digest field in BlobInfo is guaranteed to be provided, Size may be -1 and MediaType may be optionally provided.
 // May update BlobInfoCache, preferably after it knows for certain that a blob truly exists at a specific location.
@@ -291,7 +303,7 @@ func (s *Source) GetBlob(ctx context.Context, info types.BlobInfo, cache types.B
 
 		uncompressedStream, _, err := compression.AutoDecompress(underlyingStream)
 		if err != nil {
-			return nil, 0, errors.Wrapf(err, "auto-decompressing blob %s", info.Digest)
+			return nil, 0, perrors.Wrapf(err, "auto-decompressing blob %s", info.Digest)
 		}
 
 		newStream := uncompressedReadCloser{
@@ -304,27 +316,5 @@ func (s *Source) GetBlob(ctx context.Context, info types.BlobInfo, cache types.B
 		return newStream, li.size, nil
 	}
 
-	return nil, 0, errors.Errorf("Unknown blob %s", info.Digest)
-}
-
-// GetSignatures returns the image's signatures.  It may use a remote (= slow) service.
-// This source implementation does not support manifest lists, so the passed-in instanceDigest should always be nil,
-// as there can be no secondary manifests.
-func (s *Source) GetSignatures(ctx context.Context, instanceDigest *digest.Digest) ([][]byte, error) {
-	if instanceDigest != nil {
-		// How did we even get here? GetManifest(ctx, nil) has returned a manifest.DockerV2Schema2MediaType.
-		return nil, errors.Errorf(`Manifest lists are not supported by "docker-daemon:"`)
-	}
-	return [][]byte{}, nil
-}
-
-// LayerInfosForCopy returns either nil (meaning the values in the manifest are fine), or updated values for the layer
-// blobsums that are listed in the image's manifest.  If values are returned, they should be used when using GetBlob()
-// to read the image's layers.
-// This source implementation does not support manifest lists, so the passed-in instanceDigest should always be nil,
-// as the primary manifest can not be a list, so there can be no secondary manifests.
-// The Digest field is guaranteed to be provided; Size may be -1.
-// WARNING: The list may contain duplicates, and they are semantically relevant.
-func (s *Source) LayerInfosForCopy(context.Context, *digest.Digest) ([]types.BlobInfo, error) {
-	return nil, nil
+	return nil, 0, fmt.Errorf("Unknown blob %s", info.Digest)
 }

vendor/github.com/containers/image/v5/docker/internal/tarfile/writer.go

@@ -4,6 +4,7 @@ import (
 	"archive/tar"
 	"bytes"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -15,7 +16,7 @@ import (
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/image/v5/types"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -72,7 +73,7 @@ func (w *Writer) unlock() {
 // The caller must have locked the Writer.
 func (w *Writer) tryReusingBlobLocked(info types.BlobInfo) (bool, types.BlobInfo, error) {
 	if info.Digest == "" {
-		return false, types.BlobInfo{}, errors.Errorf("Can not check for a blob with unknown digest")
+		return false, types.BlobInfo{}, errors.New("Can not check for a blob with unknown digest")
 	}
 	if blob, ok := w.blobs[info.Digest]; ok {
 		return true, types.BlobInfo{Digest: info.Digest, Size: blob.Size}, nil
@@ -94,16 +95,16 @@ func (w *Writer) ensureSingleLegacyLayerLocked(layerID string, layerDigest diges
 		// See also the comment in physicalLayerPath.
 		physicalLayerPath := w.physicalLayerPath(layerDigest)
 		if err := w.sendSymlinkLocked(filepath.Join(layerID, legacyLayerFileName), filepath.Join("..", physicalLayerPath)); err != nil {
-			return errors.Wrap(err, "creating layer symbolic link")
+			return perrors.Wrap(err, "creating layer symbolic link")
 		}
 
 		b := []byte("1.0")
 		if err := w.sendBytesLocked(filepath.Join(layerID, legacyVersionFileName), b); err != nil {
-			return errors.Wrap(err, "writing VERSION file")
+			return perrors.Wrap(err, "writing VERSION file")
 		}
 
 		if err := w.sendBytesLocked(filepath.Join(layerID, legacyConfigFileName), configBytes); err != nil {
-			return errors.Wrap(err, "writing config json file")
+			return perrors.Wrap(err, "writing config json file")
 		}
 
 		w.legacyLayers[layerID] = struct{}{}
@@ -128,7 +129,7 @@ func (w *Writer) writeLegacyMetadataLocked(layerDescriptors []manifest.Schema2De
 			var config map[string]*json.RawMessage
 			err := json.Unmarshal(configBytes, &config)
 			if err != nil {
-				return errors.Wrap(err, "unmarshaling config")
+				return perrors.Wrap(err, "unmarshaling config")
 			}
 			for _, attr := range [7]string{"architecture", "config", "container", "container_config", "created", "docker_version", "os"} {
 				layerConfig[attr] = config[attr]
@@ -152,7 +153,7 @@ func (w *Writer) writeLegacyMetadataLocked(layerDescriptors []manifest.Schema2De
 		layerConfig["layer_id"] = chainID
 		b, err := json.Marshal(layerConfig) // Note that layerConfig["id"] is not set yet at this point.
 		if err != nil {
-			return errors.Wrap(err, "marshaling layer config")
+			return perrors.Wrap(err, "marshaling layer config")
 		}
 		delete(layerConfig, "layer_id")
 		layerID := digest.Canonical.FromBytes(b).Hex()
@@ -160,7 +161,7 @@ func (w *Writer) writeLegacyMetadataLocked(layerDescriptors []manifest.Schema2De
 
 		configBytes, err := json.Marshal(layerConfig)
 		if err != nil {
-			return errors.Wrap(err, "marshaling layer config")
+			return perrors.Wrap(err, "marshaling layer config")
 		}
 
 		if err := w.ensureSingleLegacyLayerLocked(layerID, l.Digest, configBytes); err != nil {
@@ -280,10 +281,10 @@ func (w *Writer) Close() error {
 
 	b, err = json.Marshal(w.repositories)
 	if err != nil {
-		return errors.Wrap(err, "marshaling repositories")
+		return perrors.Wrap(err, "marshaling repositories")
 	}
 	if err := w.sendBytesLocked(legacyRepositoriesFileName, b); err != nil {
-		return errors.Wrap(err, "writing config json file")
+		return perrors.Wrap(err, "writing config json file")
 	}
 
 	if err := w.tar.Close(); err != nil {
@@ -375,7 +376,7 @@ func (w *Writer) sendFileLocked(path string, expectedSize int64, stream io.Reade
 		return err
 	}
 	if size != expectedSize {
-		return errors.Errorf("Size mismatch when copying %s, expected %d, got %d", path, expectedSize, size)
+		return fmt.Errorf("Size mismatch when copying %s, expected %d, got %d", path, expectedSize, size)
 	}
 	return nil
 }

vendor/github.com/containers/image/v5/docker/paths_common.go

@@ -0,0 +1,6 @@
+//go:build !freebsd
+// +build !freebsd
+
+package docker
+
+const etcDir = "/etc"

vendor/github.com/containers/image/v5/docker/paths_freebsd.go

@@ -0,0 +1,6 @@
+//go:build freebsd
+// +build freebsd
+
+package docker
+
+const etcDir = "/usr/local/etc"

vendor/github.com/containers/image/v5/docker/policyconfiguration/naming.go

@@ -1,10 +1,11 @@
 package policyconfiguration
 
 import (
+	"errors"
+	"fmt"
 	"strings"
 
 	"github.com/containers/image/v5/docker/reference"
-	"github.com/pkg/errors"
 )
 
 // DockerReferenceIdentity returns a string representation of the reference, suitable for policy lookup,
@@ -16,9 +17,9 @@ func DockerReferenceIdentity(ref reference.Named) (string, error) {
 	digested, isDigested := ref.(reference.Canonical)
 	switch {
 	case isTagged && isDigested: // Note that this CAN actually happen.
-		return "", errors.Errorf("Unexpected Docker reference %s with both a name and a digest", reference.FamiliarString(ref))
+		return "", fmt.Errorf("Unexpected Docker reference %s with both a name and a digest", reference.FamiliarString(ref))
 	case !isTagged && !isDigested: // This should not happen, the caller is expected to ensure !reference.IsNameOnly()
-		return "", errors.Errorf("Internal inconsistency: Docker reference %s with neither a tag nor a digest", reference.FamiliarString(ref))
+		return "", fmt.Errorf("Internal inconsistency: Docker reference %s with neither a tag nor a digest", reference.FamiliarString(ref))
 	case isTagged:
 		res = res + ":" + tagged.Tag()
 	case isDigested:

vendor/github.com/containers/image/v5/docker/registries_d.go

@@ -1,6 +1,7 @@
 package docker
 
 import (
+	"errors"
 	"fmt"
 	"net/url"
 	"os"
@@ -14,7 +15,7 @@ import (
 	"github.com/containers/storage/pkg/homedir"
 	"github.com/ghodss/yaml"
 	"github.com/opencontainers/go-digest"
-	"github.com/pkg/errors"
+	perrors "github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 )
 
@@ -25,15 +26,15 @@ var systemRegistriesDirPath = builtinRegistriesDirPath
 
 // builtinRegistriesDirPath is the path to registries.d.
 // DO NOT change this, instead see systemRegistriesDirPath above.
-const builtinRegistriesDirPath = "/etc/containers/registries.d"
+const builtinRegistriesDirPath = etcDir + "/containers/registries.d"
 
 // userRegistriesDirPath is the path to the per user registries.d.
 var userRegistriesDir = filepath.FromSlash(".config/containers/registries.d")
 
-// defaultUserDockerDir is the default sigstore directory for unprivileged user
+// defaultUserDockerDir is the default lookaside directory for unprivileged user
 var defaultUserDockerDir = filepath.FromSlash(".local/share/containers/sigstore")
 
-// defaultDockerDir is the default sigstore directory for root
+// defaultDockerDir is the default lookaside directory for root
 var defaultDockerDir = "/var/lib/containers/sigstore"
 
 // registryConfiguration is one of the files in registriesDirPath configuring lookaside locations, or the result of merging them all.
@@ -46,51 +47,39 @@ type registryConfiguration struct {
 
 // registryNamespace defines lookaside locations for a single namespace.
 type registryNamespace struct {
-	SigStore        string `json:"sigstore"`         // For reading, and if SigStoreStaging is not present, for writing.
-	SigStoreStaging string `json:"sigstore-staging"` // For writing only.
+	Lookaside              string `json:"lookaside"`         // For reading, and if LookasideStaging is not present, for writing.
+	LookasideStaging       string `json:"lookaside-staging"` // For writing only.
+	SigStore               string `json:"sigstore"`          // For compatibility, deprecated in favor of Lookaside.
+	SigStoreStaging        string `json:"sigstore-staging"`  // For compatibility, deprecated in favor of LookasideStaging.
+	UseSigstoreAttachments *bool  `json:"use-sigstore-attachments,omitempty"`
 }
 
-// signatureStorageBase is an "opaque" type representing a lookaside Docker signature storage.
-// Users outside of this file should use SignatureStorageBaseURL and signatureStorageURL below.
-type signatureStorageBase *url.URL
+// lookasideStorageBase is an "opaque" type representing a lookaside Docker signature storage.
+// Users outside of this file should use SignatureStorageBaseURL and lookasideStorageURL below.
+type lookasideStorageBase *url.URL
 
-// SignatureStorageBaseURL reads configuration to find an appropriate signature storage URL for ref, for write access if “write”.
+// SignatureStorageBaseURL reads configuration to find an appropriate lookaside storage URL for ref, for write access if “write”.
 // the usage of the BaseURL is defined under docker/distribution registries—separate storage of docs/signature-protocols.md
 // Warning: This function only exposes configuration in registries.d;
 // just because this function returns an URL does not mean that the URL will be used by c/image/docker (e.g. if the registry natively supports X-R-S-S).
 func SignatureStorageBaseURL(sys *types.SystemContext, ref types.ImageReference, write bool) (*url.URL, error) {
 	dr, ok := ref.(dockerReference)
 	if !ok {
-		return nil, errors.Errorf("ref must be a dockerReference")
+		return nil, errors.New("ref must be a dockerReference")
 	}
-	// FIXME? Loading and parsing the config could be cached across calls.
-	dirPath := registriesDirPath(sys)
-	logrus.Debugf(`Using registries.d directory %s for sigstore configuration`, dirPath)
-	config, err := loadAndMergeConfig(dirPath)
+	config, err := loadRegistryConfiguration(sys)
 	if err != nil {
 		return nil, err
 	}
 
-	topLevel := config.signatureTopLevel(dr, write)
-	var url *url.URL
-	if topLevel != "" {
-		url, err = url.Parse(topLevel)
-		if err != nil {
-			return nil, errors.Wrapf(err, "Invalid signature storage URL %s", topLevel)
-		}
-	} else {
-		// returns default directory if no sigstore specified in configuration file
-		url = builtinDefaultSignatureStorageDir(rootless.GetRootlessEUID())
-		logrus.Debugf(" No signature storage configuration found for %s, using built-in default %s", dr.PolicyConfigurationIdentity(), url.Redacted())
-	}
-	// NOTE: Keep this in sync with docs/signature-protocols.md!
-	// FIXME? Restrict to explicitly supported schemes?
-	repo := reference.Path(dr.ref) // Note that this is without a tag or digest.
-	if path.Clean(repo) != repo {  // Coverage: This should not be reachable because /./ and /../ components are not valid in docker references
-		return nil, errors.Errorf("Unexpected path elements in Docker reference %s for signature storage", dr.ref.String())
-	}
-	url.Path = url.Path + "/" + repo
-	return url, nil
+	return config.lookasideStorageBaseURL(dr, write)
+}
+
+// loadRegistryConfiguration returns a registryConfiguration appropriate for sys.
+func loadRegistryConfiguration(sys *types.SystemContext) (*registryConfiguration, error) {
+	dirPath := registriesDirPath(sys)
+	logrus.Debugf(`Using registries.d directory %s`, dirPath)
+	return loadAndMergeConfig(dirPath)
 }
 
 // registriesDirPath returns a path to registries.d
@@ -115,15 +104,8 @@ func registriesDirPathWithHomeDir(sys *types.SystemContext, homeDir string) stri
 	return systemRegistriesDirPath
 }
 
-// builtinDefaultSignatureStorageDir returns default signature storage URL as per euid
-func builtinDefaultSignatureStorageDir(euid int) *url.URL {
-	if euid != 0 {
-		return &url.URL{Scheme: "file", Path: filepath.Join(homedir.Get(), defaultUserDockerDir)}
-	}
-	return &url.URL{Scheme: "file", Path: defaultDockerDir}
-}
-
 // loadAndMergeConfig loads configuration files in dirPath
+// FIXME: Probably rename to loadRegistryConfigurationForPath
 func loadAndMergeConfig(dirPath string) (*registryConfiguration, error) {
 	mergedConfig := registryConfiguration{Docker: map[string]registryNamespace{}}
 	dockerDefaultMergedFrom := ""
@@ -153,12 +135,12 @@ func loadAndMergeConfig(dirPath string) (*registryConfiguration, error) {
 		var config registryConfiguration
 		err = yaml.Unmarshal(configBytes, &config)
 		if err != nil {
-			return nil, errors.Wrapf(err, "parsing %s", configPath)
+			return nil, perrors.Wrapf(err, "parsing %s", configPath)
 		}
 
 		if config.DefaultDocker != nil {
 			if mergedConfig.DefaultDocker != nil {
-				return nil, errors.Errorf(`Error parsing signature storage configuration: "default-docker" defined both in "%s" and "%s"`,
+				return nil, fmt.Errorf(`Error parsing signature storage configuration: "default-docker" defined both in "%s" and "%s"`,
 					dockerDefaultMergedFrom, configPath)
 			}
 			mergedConfig.DefaultDocker = config.DefaultDocker
@@ -167,7 +149,7 @@ func loadAndMergeConfig(dirPath string) (*registryConfiguration, error) {
 
 		for nsName, nsConfig := range config.Docker { // includes config.Docker == nil
 			if _, ok := mergedConfig.Docker[nsName]; ok {
-				return nil, errors.Errorf(`Error parsing signature storage configuration: "docker" namespace "%s" defined both in "%s" and "%s"`,
+				return nil, fmt.Errorf(`Error parsing signature storage configuration: "docker" namespace "%s" defined both in "%s" and "%s"`,
 					nsName, nsMergedFrom[nsName], configPath)
 			}
 			mergedConfig.Docker[nsName] = nsConfig
@@ -178,6 +160,40 @@ func loadAndMergeConfig(dirPath string) (*registryConfiguration, error) {
 	return &mergedConfig, nil
 }
 
+// lookasideStorageBaseURL returns an appropriate signature storage URL for ref, for write access if “write”.
+// the usage of the BaseURL is defined under docker/distribution registries—separate storage of docs/signature-protocols.md
+func (config *registryConfiguration) lookasideStorageBaseURL(dr dockerReference, write bool) (*url.URL, error) {
+	topLevel := config.signatureTopLevel(dr, write)
+	var url *url.URL
+	if topLevel != "" {
+		u, err := url.Parse(topLevel)
+		if err != nil {
+			return nil, perrors.Wrapf(err, "Invalid signature storage URL %s", topLevel)
+		}
+		url = u
+	} else {
+		// returns default directory if no lookaside specified in configuration file
+		url = builtinDefaultLookasideStorageDir(rootless.GetRootlessEUID())
+		logrus.Debugf(" No signature storage configuration found for %s, using built-in default %s", dr.PolicyConfigurationIdentity(), url.Redacted())
+	}
+	// NOTE: Keep this in sync with docs/signature-protocols.md!
+	// FIXME? Restrict to explicitly supported schemes?
+	repo := reference.Path(dr.ref) // Note that this is without a tag or digest.
+	if path.Clean(repo) != repo {  // Coverage: This should not be reachable because /./ and /../ components are not valid in docker references
+		return nil, fmt.Errorf("Unexpected path elements in Docker reference %s for signature storage", dr.ref.String())
+	}
+	url.Path = url.Path + "/" + repo
+	return url, nil
+}
+
+// builtinDefaultLookasideStorageDir returns default signature storage URL as per euid
+func builtinDefaultLookasideStorageDir(euid int) *url.URL {
+	if euid != 0 {
+		return &url.URL{Scheme: "file", Path: filepath.Join(homedir.Get(), defaultUserDockerDir)}
+	}
+	return &url.URL{Scheme: "file", Path: defaultDockerDir}
+}
+
 // config.signatureTopLevel returns an URL string configured in config for ref, for write access if “write”.
 // (the top level of the storage, namespaced by repo.FullName etc.), or "" if nothing has been configured.
 func (config *registryConfiguration) signatureTopLevel(ref dockerReference, write bool) string {
@@ -185,7 +201,7 @@ func (config *registryConfiguration) signatureTopLevel(ref dockerReference, writ
 		// Look for a full match.
 		identity := ref.PolicyConfigurationIdentity()
 		if ns, ok := config.Docker[identity]; ok {
-			logrus.Debugf(` Using "docker" namespace %s`, identity)
+			logrus.Debugf(` Lookaside configuration: using "docker" namespace %s`, identity)
 			if url := ns.signatureTopLevel(write); url != "" {
 				return url
 			}
@@ -194,7 +210,7 @@ func (config *registryConfiguration) signatureTopLevel(ref dockerReference, writ
 		// Look for a match of the possible parent namespaces.
 		for _, name := range ref.PolicyConfigurationNamespaces() {
 			if ns, ok := config.Docker[name]; ok {
-				logrus.Debugf(` Using "docker" namespace %s`, name)
+				logrus.Debugf(` Lookaside configuration: using "docker" namespace %s`, name)
 				if url := ns.signatureTopLevel(write); url != "" {
 					return url
 				}
@@ -203,7 +219,7 @@ func (config *registryConfiguration) signatureTopLevel(ref dockerReference, writ
 	}
 	// Look for a default location
 	if config.DefaultDocker != nil {
-		logrus.Debugf(` Using "default-docker" configuration`)
+		logrus.Debugf(` Lookaside configuration: using "default-docker" configuration`)
 		if url := config.DefaultDocker.signatureTopLevel(write); url != "" {
 			return url
 		}
@@ -211,24 +227,67 @@ func (config *registryConfiguration) signatureTopLevel(ref dockerReference, writ
 	return ""
 }
 
+// config.useSigstoreAttachments returns whether we should look for and write sigstore attachments.
+// for ref.
+func (config *registryConfiguration) useSigstoreAttachments(ref dockerReference) bool {
+	if config.Docker != nil {
+		// Look for a full match.
+		identity := ref.PolicyConfigurationIdentity()
+		if ns, ok := config.Docker[identity]; ok {
+			logrus.Debugf(` Sigstore attachments: using "docker" namespace %s`, identity)
+			if ns.UseSigstoreAttachments != nil {
+				return *ns.UseSigstoreAttachments
+			}
+		}
+
+		// Look for a match of the possible parent namespaces.
+		for _, name := range ref.PolicyConfigurationNamespaces() {
+			if ns, ok := config.Docker[name]; ok {
+				logrus.Debugf(` Sigstore attachments: using "docker" namespace %s`, name)
+				if ns.UseSigstoreAttachments != nil {
+					return *ns.UseSigstoreAttachments
+				}
+			}
+		}
+	}
+	// Look for a default location
+	if config.DefaultDocker != nil {
+		logrus.Debugf(` Sigstore attachments: using "default-docker" configuration`)
+		if config.DefaultDocker.UseSigstoreAttachments != nil {
+			return *config.DefaultDocker.UseSigstoreAttachments
+		}
+	}
+	return false
+}
+
 // ns.signatureTopLevel returns an URL string configured in ns for ref, for write access if “write”.
 // or "" if nothing has been configured.
 func (ns registryNamespace) signatureTopLevel(write bool) string {
-	if write && ns.SigStoreStaging != "" {
-		logrus.Debugf(`  Using %s`, ns.SigStoreStaging)
-		return ns.SigStoreStaging
+	if write {
+		if ns.LookasideStaging != "" {
+			logrus.Debugf(`  Using "lookaside-staging" %s`, ns.LookasideStaging)
+			return ns.LookasideStaging
+		}
+		if ns.SigStoreStaging != "" {
+			logrus.Debugf(`  Using "sigstore-staging" %s`, ns.SigStoreStaging)
+			return ns.SigStoreStaging
+		}
+	}
+	if ns.Lookaside != "" {
+		logrus.Debugf(`  Using "lookaside" %s`, ns.Lookaside)
+		return ns.Lookaside
 	}
 	if ns.SigStore != "" {
-		logrus.Debugf(`  Using %s`, ns.SigStore)
+		logrus.Debugf(`  Using "sigstore" %s`, ns.SigStore)
 		return ns.SigStore
 	}
 	return ""
 }
 
-// signatureStorageURL returns an URL usable for accessing signature index in base with known manifestDigest.
+// lookasideStorageURL returns an URL usable for accessing signature index in base with known manifestDigest.
 // base is not nil from the caller
 // NOTE: Keep this in sync with docs/signature-protocols.md!
-func signatureStorageURL(base signatureStorageBase, manifestDigest digest.Digest, index int) *url.URL {
+func lookasideStorageURL(base lookasideStorageBase, manifestDigest digest.Digest, index int) *url.URL {
 	url := *base
 	url.Path = fmt.Sprintf("%s@%s=%s/signature-%d", url.Path, manifestDigest.Algorithm(), manifestDigest.Hex(), index+1)
 	return &url