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scripts: Add a script to push and sign manifests

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Also adjust the 'linuxkit/alpine' script to follow the
same pattern.

The new version of the script extract username/password from
the credential helper (or docker) and build and 'expect'
script to feed the info to 'notary'.

They can be invoked by:
DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE="phrase" ./push-manifest.sh ...

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2017-08-02 14:06:37 +01:00
parent dc91e84223
commit 6d4162343a
2 changed files with 171 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

108
scripts/push-manifest.sh Executable file
View File

@ -0,0 +1,108 @@
#! /bin/sh
set -e
# This script pushes a multiarch manifest for packages and signs it.
#
# The TARGET must be of the form <org>/<image>:<tag> and this is what
# the manifest is pushed to. It assumes that there is are images of
# the form <org>/<image>:<tag>-<arch> already on hub.
#
# If TRUST is not set, the manifest will not be signed.
#
# For signing, DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE must be set.
# This should all be replaced with 'docker manifest' once it lands.
TARGET=$1
TRUST=$2
REPO=$(echo "$TARGET" | cut -d':' -f1)
TAG=$(echo "$TARGET" | cut -d':' -f2)
# Work out credentials. On macOS they are needed for manifest-tool and
# we need them for notary on all platforms.
case $(uname -s) in
Darwin)
CRED=$(echo "https://index.docker.io/v1/" | /Applications/Docker.app/Contents/Resources/bin/docker-credential-osxkeychain.bin get)
USER=$(echo "$CRED" | jq -r '.Username')
PASS=$(echo "$CRED" | jq -r '.Secret')
MT_ARGS="--username $USER --password $PASS"
;;
Linux)
CRED=$(cat ~/.docker/config.json | jq -r '.auths."https://index.docker.io/v1/".auth' | base64 -d -)
USER=$(echo $CRED | cut -d ':' -f 1)
PASS=$(echo $CRED | cut -d ':' -f 2-)
# manifest-tool can use docker credentials directly
MT_ARGS=
;;
*)
echo "Unsupported platform"
exit 1
;;
esac
# Push manifest list
OUT=$(manifest-tool $MT_ARGS push from-args \
--ignore-missing \
--platforms linux/amd64,linux/arm64 \
--template "$TARGET"-ARCH \
--target "$TARGET")
echo "$OUT"
if [ -z "$TRUST" ]; then
echo "Not signing $TARGET"
exit 0
fi
# Extract sha256 and length from the manifest-tool output
SHA256=$(echo "$OUT" | cut -d' ' -f2 | cut -d':' -f2)
LEN=$(echo "$OUT" | cut -d' ' -f3)
# Notary requires a PTY for username/password so use expect for that.
export NOTARY_DELEGATION_PASSPHRASE="$DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE"
NOTARY_CMD="notary -s https://notary.docker.io -d $HOME/.docker/trust addhash \
-p docker.io/$REPO $TAG $LEN --sha256 $SHA256 \
-r targets/releases"
echo '
spawn '"$NOTARY_CMD"'
set pid [exp_pid]
set timeout 60
expect {
timeout {
puts "Expected username prompt"
exec kill -9 $pid
exit 1
}
"username: " {
send "'"$USER"'\n"
}
}
expect {
timeout {
puts "Expected password prompt"
exec kill -9 $pid
exit 1
}
"password: " {
send "'"$PASS"'\n"
}
}
expect {
timeout {
puts "Expected password prompt"
exec kill -9 $pid
exit 1
}
eof {
}
}
set waitval [wait -i $spawn_id]
set exval [lindex $waitval 3]
exit $exval
' | expect -f -
echo
echo "New signed multi-arch image: $REPO:$TAG"
echo

78
tools/alpine/push-manifest.sh
View File

@ -1,4 +1,5 @@
#! /bin/sh
set -e
# This script creates a multiarch manifest for the 'linuxkit/alpine'
# image, pushes and signs it. The manifest is pushed with the tag of
@ -9,6 +10,8 @@
# This script is specific to 'linuxkit/alpine'. For normal packages we
# use a different scheme.
#
# For signing, DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE must be set.
#
# This should all be replaced with 'docker manifest' once it lands.
ORG=$1
@ -16,12 +19,13 @@ IMAGE=$2
IMG_X86_64=$(head -1 versions.x86_64 | sed 's,[#| ]*,,')
IMG_ARM64=$(head -1 versions.aarch64 | sed 's,[#| ]*,,')
IMG_MANIFEST=$(echo "$IMG_X86_64" | sed 's,\-.*$,,')
IMG_TAG=$(echo "$IMG_MANIFEST" | sed 's,.*:,,')
# Extract the TAG from the x86_64 name and build the manifest target name
TAG=$(echo "$IMG_X86_64" | sed 's,\-.*$,,' | cut -d':' -f2)
TARGET="$ORG/$IMAGE:$TAG"
YAML=$(mktemp)
cat <<EOF > "$YAML"
image: $IMG_MANIFEST
image: $TARGET
manifests:
- image: $IMG_ARM64
platform:
@ -33,20 +37,21 @@ manifests:
os: linux
EOF
# work out additional arguments. Specifically, on Darwin the hub
# credentials are stored on the keychain and we need to extract them
# from there
# Work out credentials. On macOS they are needed for manifest-tool and
# we need them for notary on all platforms.
case $(uname -s) in
Darwin)
CRED=$(echo "https://index.docker.io/v1/" | /Applications/Docker.app/Contents/Resources/bin/docker-credential-osxkeychain.bin get)
USER=$(echo "$CRED" | jq -r '.Username')
PASS=$(echo "$CRED" | jq -r '.Secret')
USERPASS="$USER\n$PASS"
MT_ARGS="--username $USER --password $PASS"
;;
Linux)
CRED=$(cat ~/.docker/config.json | jq -r '.auths."https://index.docker.io/v1/".auth' | base64 -d -)
USER=$(echo $CRED | cut -d ':' -f 1)
PASS=$(echo $CRED | cut -d ':' -f 2-)
# manifest-tool can use docker credentials directly
MT_ARGS=
USERPASS=$(cat ~/.docker/config.json | jq -r '.auths."https://index.docker.io/v1/".auth' | base64 -d - | sed 's,:,\\n,')
;;
*)
echo "Unsupported platform"
@ -58,14 +63,57 @@ esac
OUT=$(manifest-tool $MT_ARGS push from-spec "$YAML")
rm "$YAML"
echo "$OUT"
# Extract sha256 and length from the manifest-tool output
SHA256=$(echo "$OUT" | cut -d' ' -f2 | cut -d':' -f2)
LEN=$(echo "$OUT" | cut -d' ' -f3)
# Sign manifest (TODO: Use $USERPASS and pass them into notary)
notary -s https://notary.docker.io \
-d ~/.docker/trust addhash \
-p docker.io/"$ORG"/"$IMAGE" \
"$IMG_TAG" "$LEN" --sha256 "$SHA256" \
-r targets/releases
NOTARY_DELEGATION_PASSPHRASE="$DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE"
echo "New multi-arch image: $ORG/$IMAGE:$IMG_TAG"
# Notary requires a PTY for username/password so use expect for that.
export NOTARY_DELEGATION_PASSPHRASE="$DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE"
NOTARY_CMD="notary -s https://notary.docker.io -d $HOME/.docker/trust addhash \
-p docker.io/"$ORG"/"$IMAGE" $TAG $LEN --sha256 $SHA256 \
-r targets/releases"
echo '
spawn '"$NOTARY_CMD"'
set pid [exp_pid]
set timeout 60
expect {
timeout {
puts "Expected username prompt"
exec kill -9 $pid
exit 1
}
"username: " {
send "'"$USER"'\n"
}
}
expect {
timeout {
puts "Expected password prompt"
exec kill -9 $pid
exit 1
}
"password: " {
send "'"$PASS"'\n"
}
}
expect {
timeout {
puts "Expected password prompt"
exec kill -9 $pid
exit 1
}
eof {
}
}
set waitval [wait -i $spawn_id]
set exval [lindex $waitval 3]
exit $exval
' | expect -f -
echo
echo "New signed multi-arch image: $REPO:$TAG"
echo