wip

Co-authored-by: Lorenzo Fontana <lo@linux.com>
Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

.circleci/config.yml

@@ -1,5 +1,85 @@
 version: 2
 jobs:
+  # Build a statically linked Falco release binary using musl
+  # This build is 100% static, there are no host dependencies
+  "build/musl":
+    docker:
+      - image: alpine:3.12
+    steps:
+      - checkout:
+          path: /source-static/falco
+      - run:
+          name: Update base image
+          command: apk update
+      - run:
+          name: Install build dependencies
+          command: apk add g++ gcc cmake cmake make ncurses-dev git bash perl linux-headers autoconf automake m4 libtool elfutils-dev libelf-static patch binutils
+      - run:
+          name: Prepare project
+          command: |
+            mkdir -p /build-static/release
+            cd /build-static/release
+            cmake -DCPACK_GENERATOR=TGZ -DBUILD_BPF=Off -DBUILD_DRIVER=Off -DCMAKE_BUILD_TYPE=Release -DUSE_BUNDLED_DEPS=On -DMUSL_OPTIMIZED_BUILD=On -DFALCO_ETC_DIR=/etc/falco /source-static/falco
+      - run:
+          name: Build
+          command: |
+            cd /build-static/release
+            make -j4 all
+      - run:
+          name: Package
+          command: |
+            cd /build-static/release
+            make -j4 package
+      - run:
+          name: Run unit tests
+          command: |
+            cd /build-static/release
+            make tests
+      - run:
+          name: Prepare artifacts
+          command: |
+            mkdir -p /tmp/packages
+            cp /build-static/release/*.tar.gz /tmp/packages
+      - store_artifacts:
+          path: /tmp/packages
+          destination: /packages
+      - persist_to_workspace:
+          root: /
+          paths:
+            - build-static/release
+            - source-static
+  # Build the minimal Falco
+  # This build only contains the Falco engine and the basic input/output.
+  "build/minimal":
+    docker:
+      - image: ubuntu:focal
+    steps:
+      - checkout
+      - run:
+          name: Update base image
+          command: apt update -y
+      - run:
+          name: Install dependencies
+          command: DEBIAN_FRONTEND=noninteractive apt install libjq-dev libncurses-dev libyaml-cpp-dev libelf-dev cmake build-essential git -y
+      - run:
+          name: Prepare project
+          command: |
+            mkdir build-minimal
+            pushd build-minimal
+            cmake -DMINIMAL_BUILD=On -DBUILD_BPF=Off -DBUILD_DRIVER=Off -DCMAKE_BUILD_TYPE=Release ..
+            popd
+      - run:
+          name: Build
+          command: |
+            pushd build-minimal
+            make -j4 all
+            popd
+      - run:
+          name: Run unit tests
+          command: |
+            pushd build-minimal
+            make tests
+            popd
   # Build using ubuntu LTS
   # This build is dynamic, most dependencies are taken from the OS
   "build/ubuntu-focal":
@@ -202,6 +282,25 @@ jobs:
       - run:
           name: Execute integration tests
           command: /usr/bin/entrypoint test
+      - store_test_results:
+          path: /build/release/integration-tests-xunit
+  "tests/integration-static":
+    docker:
+      - image: falcosecurity/falco-tester:latest
+        environment:
+          SOURCE_DIR: "/source-static"
+          BUILD_DIR: "/build-static"
+          BUILD_TYPE: "release"
+          SKIP_PACKAGES_TESTS: "true"
+    steps:
+      - setup_remote_docker
+      - attach_workspace:
+          at: /
+      - run:
+          name: Execute integration tests
+          command: /usr/bin/entrypoint test
+      - store_test_results:
+          path: /build-static/release/integration-tests-xunit
   "tests/driver-loader/integration":
     machine:
       image: ubuntu-1604:202004-01
@@ -211,6 +310,33 @@ jobs:
       - run:
           name: Execute driver-loader integration tests
           command: /tmp/ws/source/falco/test/driver-loader/run_test.sh /tmp/ws/build/release/
+  # Code quality
+  "quality/static-analysis":
+    docker:
+      - image: falcosecurity/falco-builder:latest
+        environment:
+          BUILD_TYPE: "release"
+    steps:
+      - run:
+          name: Install cppcheck
+          command: |
+            yum update -y
+            yum install epel-release -y
+            yum install cppcheck cppcheck-htmlreport -y
+      - checkout:
+          path: /source/falco
+      - run:
+          name: Prepare project
+          command: /usr/bin/entrypoint cmake
+      - run:
+          name: cppcheck
+          command: /usr/bin/entrypoint cppcheck
+      - run:
+          name: cppcheck html report
+          command: /usr/bin/entrypoint cppcheck_htmlreport
+      - store_artifacts:
+          path: /build/release/static-analysis-reports
+          destination: /static-analysis-reports
   # Sign rpm packages
   "rpm/sign":
     docker:
@@ -267,10 +393,34 @@ jobs:
             FALCO_VERSION=$(cat /build/release/userspace/falco/config_falco.h | grep 'FALCO_VERSION ' | cut -d' ' -f3 | sed -e 's/^"//' -e 's/"$//')
             jfrog bt u /build/release/falco-${FALCO_VERSION}-x86_64.rpm falcosecurity/rpm-dev/falco/${FALCO_VERSION} --user poiana --key ${BINTRAY_SECRET} --publish --override
       - run:
-          name: Publish tgz-dev
+          name: Publish bin-dev
           command: |
-            FALCO_VERSION=$(cat /build/release/userspace/falco/config_falco.h | grep 'FALCO_VERSION ' | cut -d' ' -f3 | sed -e 's/^"//' -e 's/"$//')
-            jfrog bt u /build/release/falco-${FALCO_VERSION}-x86_64.tar.gz falcosecurity/bin-dev/falco/${FALCO_VERSION} x86_64/ --user poiana --key ${BINTRAY_SECRET} --publish --override
+            FALCO_VERSION=$(cat /build-static/release/userspace/falco/config_falco.h | grep 'FALCO_VERSION ' | cut -d' ' -f3 | sed -e 's/^"//' -e 's/"$//')
+            jfrog bt u /build-static/release/falco-${FALCO_VERSION}-x86_64.tar.gz falcosecurity/bin-dev/falco/${FALCO_VERSION} x86_64/ --user poiana --key ${BINTRAY_SECRET} --publish --override
+  # Clenup the Falco development release packages
+  "cleanup/packages-dev":
+    docker:
+      - image: docker.bintray.io/jfrog/jfrog-cli-go:latest
+    steps:
+      - checkout:
+          path: /source/falco
+      - run:
+          name: Prepare env
+          command: |
+            apk add --no-cache --update
+            apk add curl jq
+      - run:
+          name: Only keep the 10 most recent Falco development release tarballs
+          command: |
+            /source/falco/scripts/cleanup -p ${BINTRAY_SECRET} -r bin-dev
+      - run:
+          name: Only keep the 50 most recent Falco development release RPMs
+          command: |
+            /source/falco/scripts/cleanup -p ${BINTRAY_SECRET} -r rpm-dev
+      - run:
+          name: Only keep the 50 most recent Falco development release DEBs
+          command: |
+            /source/falco/scripts/cleanup -p ${BINTRAY_SECRET} -r deb-dev
   # Publish docker packages
   "publish/docker-dev":
     docker:
@@ -327,10 +477,10 @@ jobs:
             FALCO_VERSION=$(cat /build/release/userspace/falco/config_falco.h | grep 'FALCO_VERSION ' | cut -d' ' -f3 | sed -e 's/^"//' -e 's/"$//')
             jfrog bt u /build/release/falco-${FALCO_VERSION}-x86_64.rpm falcosecurity/rpm/falco/${FALCO_VERSION} --user poiana --key ${BINTRAY_SECRET} --publish --override
       - run:
-          name: Publish tgz
+          name: Publish bin
           command: |
-            FALCO_VERSION=$(cat /build/release/userspace/falco/config_falco.h | grep 'FALCO_VERSION ' | cut -d' ' -f3 | sed -e 's/^"//' -e 's/"$//')
-            jfrog bt u /build/release/falco-${FALCO_VERSION}-x86_64.tar.gz falcosecurity/bin/falco/${FALCO_VERSION} x86_64/ --user poiana --key ${BINTRAY_SECRET} --publish --override
+            FALCO_VERSION=$(cat /build-static/release/userspace/falco/config_falco.h | grep 'FALCO_VERSION ' | cut -d' ' -f3 | sed -e 's/^"//' -e 's/"$//')
+            jfrog bt u /build-static/release/falco-${FALCO_VERSION}-x86_64.tar.gz falcosecurity/bin/falco/${FALCO_VERSION} x86_64/ --user poiana --key ${BINTRAY_SECRET} --publish --override
   # Publish docker packages
   "publish/docker":
     docker:
@@ -372,6 +522,8 @@ workflows:
   version: 2
   build_and_test:
     jobs:
+      - "build/musl"
+      - "build/minimal"
       - "build/ubuntu-focal"
       - "build/ubuntu-focal-debug"
       - "build/ubuntu-bionic"
@@ -381,6 +533,9 @@ workflows:
       - "tests/integration":
           requires:
             - "build/centos7"
+      - "tests/integration-static":
+          requires:
+            - "build/musl"
       - "tests/driver-loader/integration":
           requires:
             - "build/centos7"
@@ -402,6 +557,16 @@ workflows:
               only: master
           requires:
             - "rpm/sign"
+            - "tests/integration-static"
+      - "cleanup/packages-dev":
+          context: falco
+          filters:
+            tags:
+              ignore: /.*/
+            branches:
+              only: master
+          requires:
+            - "publish/packages-dev"
       - "publish/docker-dev":
           context: falco
           filters:
@@ -412,8 +577,15 @@ workflows:
           requires:
             - "publish/packages-dev"
             - "tests/driver-loader/integration"
+      - "quality/static-analysis"
   release:
     jobs:
+      - "build/musl":
+          filters:
+            tags:
+              only: /.*/
+            branches:
+              ignore: /.*/
       - "build/centos7":
           filters:
             tags:
@@ -432,6 +604,7 @@ workflows:
       - "publish/packages":
           context: falco
           requires:
+            - "build/musl"
             - "rpm/sign"
           filters:
             tags:

.gitignore

@@ -11,8 +11,6 @@ test/.phoronix-test-suite
 test/results*.json.*
 test/build
 
-userspace/falco/lua/re.lua
-userspace/falco/lua/lpeg.so
 userspace/engine/lua/lyaml
 userspace/engine/lua/lyaml.lua
 

.luacheckrc

@@ -1,7 +1,6 @@
 std = "min"
 cache = true
 include_files = {
-    "userspace/falco/lua/*.lua",
     "userspace/engine/lua/*.lua",
     "userspace/engine/lua/lyaml/*.lua",
     "*.luacheckrc"

CHANGELOG.md

@@ -1,6 +1,101 @@
 # Change Log
 
-This file documents all notable changes to Falco. The release numbering uses [semantic versioning](http://semver.org).
+## v0.26.2
+
+Released on 2020-11-10
+
+### Major Changes
+
+* update: DRIVERS_REPO now defaults to https://download.falco.org/driver [[#1460](https://github.com/falcosecurity/falco/pull/1460)] - [@leodido](https://github.com/leodido)
+
+## v0.26.1
+
+Released on 2020-10-01
+
+### Major Changes
+
+* new: CLI flag `--alternate-lua-dir` to load Lua files from arbitrary paths [[#1419](https://github.com/falcosecurity/falco/pull/1419)] - [@admiral0](https://github.com/admiral0)
+
+
+### Rule Changes
+
+* rule(Delete or rename shell history): fix warnings/FPs + container teardown [[#1423](https://github.com/falcosecurity/falco/pull/1423)] - [@mstemm](https://github.com/mstemm)
+* rule(Write below root): ensure proc_name_exists too [[#1423](https://github.com/falcosecurity/falco/pull/1423)] - [@mstemm](https://github.com/mstemm)
+
+
+## v0.26.0
+
+Released on 2020-24-09
+
+### Major Changes
+
+* new: address several sources of FPs, primarily from GKE environments. [[#1372](https://github.com/falcosecurity/falco/pull/1372)] - [@mstemm](https://github.com/mstemm)
+* new: driver updated to 2aa88dcf6243982697811df4c1b484bcbe9488a2 [[#1410](https://github.com/falcosecurity/falco/pull/1410)] - [@leogr](https://github.com/leogr)
+* new(scripts/falco-driver-loader): detect and try to build the Falco kernel module driver using different GCC versions available in the current environment. [[#1408](https://github.com/falcosecurity/falco/pull/1408)] - [@fntlnz](https://github.com/fntlnz)
+* new: tgz (tarball) containing the statically-linked (musl) binary of Falco is now automatically built and published on bintray [[#1377](https://github.com/falcosecurity/falco/pull/1377)] - [@leogr](https://github.com/leogr)
+
+
+### Minor Changes
+
+* update: bump Falco engine version to 7 [[#1381](https://github.com/falcosecurity/falco/pull/1381)] - [@leogr](https://github.com/leogr)
+* update: the required_engine_version is now on by default [[#1381](https://github.com/falcosecurity/falco/pull/1381)] - [@leogr](https://github.com/leogr)
+* update: falcosecurity/falco-no-driver image now uses the statically-linked Falco [[#1377](https://github.com/falcosecurity/falco/pull/1377)] - [@leogr](https://github.com/leogr)
+* docs(proposals): artifacts storage [[#1375](https://github.com/falcosecurity/falco/pull/1375)] - [@leodido](https://github.com/leodido)
+* docs(proposals): artifacts cleanup [[#1375](https://github.com/falcosecurity/falco/pull/1375)] - [@leodido](https://github.com/leodido)
+
+
+### Rule Changes
+
+* rule(macro inbound_outbound): add brackets to disambiguate operator precedence [[#1373](https://github.com/falcosecurity/falco/pull/1373)] - [@ldegio](https://github.com/ldegio)
+* rule(macro redis_writing_conf): add brackets to disambiguate operator precedence [[#1373](https://github.com/falcosecurity/falco/pull/1373)] - [@ldegio](https://github.com/ldegio)
+* rule(macro run_by_foreman): add brackets to disambiguate operator precedence [[#1373](https://github.com/falcosecurity/falco/pull/1373)] - [@ldegio](https://github.com/ldegio)
+* rule(macro consider_packet_socket_communication): enable "Packet socket created in container" rule by default. [[#1402](https://github.com/falcosecurity/falco/pull/1402)] - [@rung](https://github.com/rung)
+* rule(Delete or rename shell history): skip docker overlay filesystems when considering bash history [[#1393](https://github.com/falcosecurity/falco/pull/1393)] - [@mstemm](https://github.com/mstemm)
+* rule(Disallowed K8s User): quote colons in user names [[#1393](https://github.com/falcosecurity/falco/pull/1393)] - [@mstemm](https://github.com/mstemm)
+* rule(macro falco_sensitive_mount_containers): Adds a trailing slash to avoid repo naming issues [[#1394](https://github.com/falcosecurity/falco/pull/1394)] - [@bgeesaman](https://github.com/bgeesaman)
+* rule: adds user.loginuid to the default Falco rules that also contain user.name [[#1369](https://github.com/falcosecurity/falco/pull/1369)] - [@csschwe](https://github.com/csschwe)
+
+## v0.25.0
+
+Released on 2020-08-25
+
+### Major Changes
+
+* new(userspace/falco): print the Falco and driver versions at the very beginning of the output. [[#1303](https://github.com/falcosecurity/falco/pull/1303)] - [@leogr](https://github.com/leogr)
+* new: libyaml is now bundled in the release process. Users can now avoid installing libyaml directly when getting Falco from the official release. [[#1252](https://github.com/falcosecurity/falco/pull/1252)] - [@fntlnz](https://github.com/fntlnz)
+
+
+### Minor Changes
+
+* docs(test): step-by-step instructions to run integration tests locally [[#1313](https://github.com/falcosecurity/falco/pull/1313)] - [@leodido](https://github.com/leodido)
+* update: renameat2 syscall support [[#1355](https://github.com/falcosecurity/falco/pull/1355)] - [@fntlnz](https://github.com/fntlnz)
+* update: support for 5.8.x kernels [[#1355](https://github.com/falcosecurity/falco/pull/1355)] - [@fntlnz](https://github.com/fntlnz)
+
+
+### Bug Fixes
+
+* fix(userspace/falco): correct the fallback mechanism for loading the kernel module [[#1366](https://github.com/falcosecurity/falco/pull/1366)] - [@leogr](https://github.com/leogr)
+* fix(falco-driver-loader): script crashing when using arguments [[#1330](https://github.com/falcosecurity/falco/pull/1330)] - [@antoinedeschenes](https://github.com/antoinedeschenes)
+
+
+### Rule Changes
+
+* rule(macro user_trusted_containers): add `sysdig/node-image-analyzer` and `sysdig/agent-slim` [[#1321](https://github.com/falcosecurity/falco/pull/1321)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro falco_privileged_images): add `docker.io/falcosecurity/falco` [[#1326](https://github.com/falcosecurity/falco/pull/1326)] - [@nvanheuverzwijn](https://github.com/nvanheuverzwijn)
+* rule(EphemeralContainers Created): add new rule to detect ephemeral container created [[#1339](https://github.com/falcosecurity/falco/pull/1339)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro user_read_sensitive_file_containers): replace endswiths with exact image repo name [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro user_trusted_containers): replace endswiths with exact image repo name [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro user_privileged_containers): replace endswiths with exact image repo name [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro trusted_images_query_miner_domain_dns): replace endswiths with exact image repo name [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro falco_privileged_containers): append "/" to quay.io/sysdig [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(list falco_privileged_images): add images docker.io/sysdig/agent-slim and docker.io/sysdig/node-image-analyzer [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(list falco_sensitive_mount_images): add image docker.io/sysdig/agent-slim [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(list k8s_containers): prepend docker.io to images [[#1349](https://github.com/falcosecurity/falco/pull/1349)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(macro exe_running_docker_save): add better support for centos [[#1350](https://github.com/falcosecurity/falco/pull/1350)] - [@admiral0](https://github.com/admiral0)
+* rule(macro rename): add `renameat2` syscall [[#1359](https://github.com/falcosecurity/falco/pull/1359)] - [@leogr](https://github.com/leogr)
+* rule(Read sensitive file untrusted): add trusted images into whitelist [[#1327](https://github.com/falcosecurity/falco/pull/1327)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(Pod Created in Kube Namespace): add new list k8s_image_list as white list [[#1336](https://github.com/falcosecurity/falco/pull/1336)] - [@Kaizhe](https://github.com/Kaizhe)
+* rule(list allowed_k8s_users): add "kubernetes-admin" user [[#1323](https://github.com/falcosecurity/falco/pull/1323)] - [@leogr](https://github.com/leogr)
 
 ## v0.24.0
 

CMakeLists.txt

@@ -16,6 +16,8 @@ project(falco)
 
 option(USE_BUNDLED_DEPS "Bundle hard to find dependencies into the Falco binary" OFF)
 option(BUILD_WARNINGS_AS_ERRORS "Enable building with -Wextra -Werror flags" OFF)
+option(MINIMAL_BUILD "Build a minimal version of Falco, containing only the engine and basic input/output (EXPERIMENTAL)" OFF)
+option(MUSL_OPTIMIZED_BUILD "Enable if you want a musl optimized build" OFF)
 
 # Elapsed time
 # set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CMAKE_COMMAND} -E time") # TODO(fntlnz, leodido): add a flag to enable this
@@ -50,7 +52,15 @@ else()
 endif()
 message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
 
-set(CMAKE_COMMON_FLAGS "-Wall -ggdb ${DRAIOS_FEATURE_FLAGS}")
+if(MINIMAL_BUILD)
+  set(MINIMAL_BUILD_FLAGS "-DMINIMAL_BUILD")
+endif()
+
+if(MUSL_OPTIMIZED_BUILD)
+  set(MUSL_FLAGS "-static -Os")
+endif()
+
+set(CMAKE_COMMON_FLAGS "-Wall -ggdb ${DRAIOS_FEATURE_FLAGS} ${MINIMAL_BUILD_FLAGS} ${MUSL_FLAGS}")
 
 if(BUILD_WARNINGS_AS_ERRORS)
   set(CMAKE_SUPPRESSED_WARNINGS
@@ -73,7 +83,7 @@ include(GetFalcoVersion)
 set(PACKAGE_NAME "falco")
 set(PROBE_NAME "falco")
 set(PROBE_DEVICE_NAME "falco")
-set(DRIVERS_REPO "https://dl.bintray.com/falcosecurity/driver")
+set(DRIVERS_REPO "https://download.falco.org/driver")
 if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
   set(CMAKE_INSTALL_PREFIX
       /usr
@@ -105,77 +115,31 @@ set(CURSES_NEED_NCURSES TRUE)
 find_package(Curses REQUIRED)
 message(STATUS "Found ncurses: include: ${CURSES_INCLUDE_DIR}, lib: ${CURSES_LIBRARIES}")
 
-# libb64
-
-set(B64_SRC "${PROJECT_BINARY_DIR}/b64-prefix/src/b64")
-message(STATUS "Using bundled b64 in '${B64_SRC}'")
-set(B64_INCLUDE "${B64_SRC}/include")
-set(B64_LIB "${B64_SRC}/src/libb64.a")
-ExternalProject_Add(
-  b64
-  URL "https://github.com/libb64/libb64/archive/v1.2.1.zip"
-  URL_HASH "SHA256=665134c2b600098a7ebd3d00b6a866cb34909a6d48e0e37a0eda226a4ad2638a"
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND ${CMD_MAKE}
-  BUILD_IN_SOURCE 1
-  INSTALL_COMMAND "")
+# b64
+include(b64)
 
 # yaml-cpp
 include(yaml-cpp)
 
-# OpenSSL
-include(OpenSSL)
+if(NOT MINIMAL_BUILD)
+  # OpenSSL
+  include(OpenSSL)
 
-# libcurl
-include(cURL)
+  # libcurl
+  include(cURL)
+endif()
 
 # LuaJIT
-set(LUAJIT_SRC "${PROJECT_BINARY_DIR}/luajit-prefix/src/luajit/src")
-message(STATUS "Using bundled LuaJIT in '${LUAJIT_SRC}'")
-set(LUAJIT_INCLUDE "${LUAJIT_SRC}")
-set(LUAJIT_LIB "${LUAJIT_SRC}/libluajit.a")
-ExternalProject_Add(
-  luajit
-  URL "https://github.com/LuaJIT/LuaJIT/archive/v2.0.3.tar.gz"
-  URL_HASH "SHA256=8da3d984495a11ba1bce9a833ba60e18b532ca0641e7d90d97fafe85ff014baa"
-  CONFIGURE_COMMAND ""
-  BUILD_COMMAND ${CMD_MAKE}
-  BUILD_IN_SOURCE 1
-  INSTALL_COMMAND "")
+include(luajit)
 
 # Lpeg
-set(LPEG_SRC "${PROJECT_BINARY_DIR}/lpeg-prefix/src/lpeg")
-set(LPEG_LIB "${PROJECT_BINARY_DIR}/lpeg-prefix/src/lpeg/build/lpeg.a")
-message(STATUS "Using bundled lpeg in '${LPEG_SRC}'")
-set(LPEG_DEPENDENCIES "")
-list(APPEND LPEG_DEPENDENCIES "luajit")
-ExternalProject_Add(
-  lpeg
-  DEPENDS ${LPEG_DEPENDENCIES}
-  URL "http://www.inf.puc-rio.br/~roberto/lpeg/lpeg-1.0.2.tar.gz"
-  URL_HASH "SHA256=48d66576051b6c78388faad09b70493093264588fcd0f258ddaab1cdd4a15ffe"
-  BUILD_COMMAND LUA_INCLUDE=${LUAJIT_INCLUDE} "${PROJECT_SOURCE_DIR}/scripts/build-lpeg.sh" "${LPEG_SRC}/build"
-  BUILD_IN_SOURCE 1
-  CONFIGURE_COMMAND ""
-  INSTALL_COMMAND "")
+include(lpeg)
 
 # libyaml
 include(libyaml)
 
 # lyaml
-set(LYAML_SRC "${PROJECT_BINARY_DIR}/lyaml-prefix/src/lyaml/ext/yaml")
-set(LYAML_LIB "${LYAML_SRC}/.libs/yaml.a")
-message(STATUS "Using bundled lyaml in '${LYAML_SRC}'")
-ExternalProject_Add(
-  lyaml
-  DEPENDS luajit libyaml
-  URL "https://github.com/gvvaughan/lyaml/archive/release-v6.0.tar.gz"
-  URL_HASH "SHA256=9d7cf74d776999ff6f758c569d5202ff5da1f303c6f4229d3b41f71cd3a3e7a7"
-  BUILD_COMMAND ${CMD_MAKE}
-  BUILD_IN_SOURCE 1
-  CONFIGURE_COMMAND ./configure --enable-static CFLAGS=-I${LIBYAML_INSTALL_DIR}/include CPPFLAGS=-I${LIBYAML_INSTALL_DIR}/include LDFLAGS=-L${LIBYAML_INSTALL_DIR}/lib LIBS=-lyaml LUA=${LUAJIT_SRC}/luajit LUA_INCLUDE=-I${LUAJIT_INCLUDE}
-  INSTALL_COMMAND sh -c
-                  "cp -R ${PROJECT_BINARY_DIR}/lyaml-prefix/src/lyaml/lib/* ${PROJECT_SOURCE_DIR}/userspace/engine/lua")
+include(lyaml)
 
 # One TBB
 set(TBB_SRC "${PROJECT_BINARY_DIR}/tbb-prefix/src/tbb")
@@ -194,26 +158,30 @@ ExternalProject_Add(
   BUILD_BYPRODUCTS ${TBB_LIB}
   INSTALL_COMMAND "")
 
-# civetweb
-set(CIVETWEB_SRC "${PROJECT_BINARY_DIR}/civetweb-prefix/src/civetweb/")
-set(CIVETWEB_LIB "${CIVETWEB_SRC}/install/lib/libcivetweb.a")
-set(CIVETWEB_INCLUDE_DIR "${CIVETWEB_SRC}/install/include")
-message(STATUS "Using bundled civetweb in '${CIVETWEB_SRC}'")
-ExternalProject_Add(
-  civetweb
-  URL "https://github.com/civetweb/civetweb/archive/v1.11.tar.gz"
-  URL_HASH "SHA256=de7d5e7a2d9551d325898c71e41d437d5f7b51e754b242af897f7be96e713a42"
-  CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${CIVETWEB_SRC}/install/lib
-  COMMAND ${CMAKE_COMMAND} -E make_directory ${CIVETWEB_SRC}/install/include
-  BUILD_IN_SOURCE 1
-  BUILD_COMMAND ${CMD_MAKE} COPT="-DNO_FILES" WITH_CPP=1
-  INSTALL_COMMAND ${CMD_MAKE} COPT="-DNO_FILES" install-lib install-headers PREFIX=${CIVETWEB_SRC}/install "WITH_CPP=1")
+if(NOT MINIMAL_BUILD)
+  # civetweb
+  set(CIVETWEB_SRC "${PROJECT_BINARY_DIR}/civetweb-prefix/src/civetweb/")
+  set(CIVETWEB_LIB "${CIVETWEB_SRC}/install/lib/libcivetweb.a")
+  set(CIVETWEB_INCLUDE_DIR "${CIVETWEB_SRC}/install/include")
+  message(STATUS "Using bundled civetweb in '${CIVETWEB_SRC}'")
+  ExternalProject_Add(
+    civetweb
+    URL "https://github.com/civetweb/civetweb/archive/v1.11.tar.gz"
+    URL_HASH "SHA256=de7d5e7a2d9551d325898c71e41d437d5f7b51e754b242af897f7be96e713a42"
+    CONFIGURE_COMMAND ${CMAKE_COMMAND} -E make_directory ${CIVETWEB_SRC}/install/lib
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${CIVETWEB_SRC}/install/include
+    BUILD_IN_SOURCE 1
+    BUILD_COMMAND ${CMD_MAKE} COPT="-DNO_FILES" WITH_CPP=1
+    INSTALL_COMMAND ${CMD_MAKE} COPT="-DNO_FILES" install-lib install-headers PREFIX=${CIVETWEB_SRC}/install "WITH_CPP=1")
+endif()
 
 #string-view-lite
 include(DownloadStringViewLite)
 
-# gRPC
-include(gRPC)
+if(NOT MINIMAL_BUILD)
+  # gRPC
+  include(gRPC)
+endif()
 
 # sysdig
 include(sysdig)
@@ -221,11 +189,13 @@ include(sysdig)
 # Installation
 install(FILES falco.yaml DESTINATION "${FALCO_ETC_DIR}")
 
-# Coverage
-include(Coverage)
+if(NOT MINIMAL_BUILD)
+  # Coverage
+  include(Coverage)
 
-# Tests
-add_subdirectory(test)
+  # Tests
+  add_subdirectory(test)
+endif()
 
 # Rules
 add_subdirectory(rules)
@@ -236,6 +206,9 @@ add_subdirectory(docker)
 # Clang format
 # add_custom_target(format COMMAND clang-format --style=file -i $<TARGET_PROPERTY:falco,SOURCES> COMMENT "Formatting ..." VERBATIM)
 
+# Static analysis
+include(static-analysis)
+
 # Shared build variables
 set(FALCO_SINSP_LIBRARY sinsp)
 set(FALCO_SHARE_DIR share/falco)

README.md

@@ -5,7 +5,9 @@
 
 [![Build Status](https://img.shields.io/circleci/build/github/falcosecurity/falco/master?style=for-the-badge)](https://circleci.com/gh/falcosecurity/falco) [![CII Best Practices Summary](https://img.shields.io/cii/summary/2317?label=CCI%20Best%20Practices&style=for-the-badge)](https://bestpractices.coreinfrastructure.org/projects/2317) [![GitHub](https://img.shields.io/github/license/falcosecurity/falco?style=for-the-badge)](COPYING)
 
-#### Latest releases
+Want to talk? Join us on the [#falco](https://kubernetes.slack.com/archives/CMWH3EH32) channel in the [Kubernetes Slack](https://slack.k8s.io).
+
+### Latest releases
 
 Read the [change log](CHANGELOG.md).
 
@@ -72,9 +74,16 @@ The [Official Documentation](https://falco.org/docs/) is the best resource to le
 
 To get involved with The Falco Project please visit [the community repository](https://github.com/falcosecurity/community) to find more.
 
+How to reach out?
+
+ - Join the #falco channel on the [Kubernetes Slack](https://slack.k8s.io)
+ - [Join the Falco mailing list](https://lists.cncf.io/g/cncf-falco-dev)
+ - [Read the Falco documentation](https://falco.org/docs/)
+
+
 ### Contributing
 
-See the [CONTRIBUTING.md](./CONTRIBUTING.md).
+See the [CONTRIBUTING.md](https://github.com/falcosecurity/.github/blob/master/CONTRIBUTING.md).
 
 ### Security Audit
 
@@ -94,4 +103,4 @@ Falco is licensed to you under the [Apache 2.0](./COPYING) open source license.
 [3]: https://dl.bintray.com/falcosecurity/deb-dev/stable
 [4]: https://dl.bintray.com/falcosecurity/deb/stable
 [5]: https://dl.bintray.com/falcosecurity/bin-dev/x86_64
-[6]: https://dl.bintray.com/falcosecurity/bin/x86_64
+[6]: https://dl.bintray.com/falcosecurity/bin/x86_64

RELEASE.md

@@ -4,19 +4,21 @@ Our release process is mostly automated, but we still need some manual steps to
 
 Changes and new features are grouped in [milestones](https://github.com/falcosecurity/falco/milestones), the milestone with the next version represents what is going to be released.
 
-Releases happen on a monthly cadence, towards the 16th of the on-going month, and we need to assign owners for each (usually we pair a new person with an experienced one). Assignees and the due date are proposed during the [weekly community call](https://github.com/falcosecurity/community). Note that hotfix releases can happen as soon as it is needed.
+A release happens every two months ([as per community discussion](https://github.com/falcosecurity/community/blob/master/meeting-notes/2020-09-30.md#agenda)), and we need to assign owners for each (usually we pair a new person with an experienced one). Assignees and the due date are proposed during the [weekly community call](https://github.com/falcosecurity/community). Note that hotfix releases can happen as soon as it is needed.
 
 Finally, on the proposed due date the assignees for the upcoming release proceed with the processes described below.
 
 ## Pre-Release Checklist
 
+Before cutting a release we need to do some homework in the Falco repository. This should take 5 minutes using the GitHub UI.
+
 ### 1. Release notes
-- Let `YYYY-MM-DD` the day before of the [latest release](https://github.com/falcosecurity/falco/releases)
+- Find the LAST release (-1) and use `YYYY-MM-DD` as the day before of the [latest release](https://github.com/falcosecurity/falco/releases)
 - Check the release note block of every PR matching the `is:pr is:merged closed:>YYYY-MM-DD` [filter](https://github.com/falcosecurity/falco/pulls?q=is%3Apr+is%3Amerged+closed%3A%3EYYYY-MM-DD)
     - Ensure the release note block follows the [commit convention](https://github.com/falcosecurity/falco/blob/master/CONTRIBUTING.md#commit-convention), otherwise fix its content
     - If the PR has no milestone, assign it to the milestone currently undergoing release
-- Check issues without a milestone (using [is:pr is:merged no:milestone closed:>YYYT-MM-DD](https://github.com/falcosecurity/falco/pulls?q=is%3Apr+is%3Amerged+no%3Amilestone+closed%3A%3EYYYT-MM-DD) filter) and add them to the milestone currently undergoing release
-- Double-check that there are no more merged PRs without the target milestone assigned with the `is:pr is:merged no:milestone closed:>YYYT-MM-DD` [filters](https://github.com/falcosecurity/falco/pulls?q=is%3Apr+is%3Amerged+no%3Amilestone+closed%3A%3EYYYT-MM-DD), if any, fix them
+- Check issues without a milestone (using [is:pr is:merged no:milestone closed:>YYYY-MM-DD](https://github.com/falcosecurity/falco/pulls?q=is%3Apr+is%3Amerged+no%3Amilestone+closed%3A%3EYYYY-MM-DD) filter) and add them to the milestone currently undergoing release
+- Double-check that there are no more merged PRs without the target milestone assigned with the `is:pr is:merged no:milestone closed:>YYYY-MM-DD` [filters](https://github.com/falcosecurity/falco/pulls?q=is%3Apr+is%3Amerged+no%3Amilestone+closed%3A%3EYYYY-MM-DD), if any, fix them
 
 ### 2. Milestones
 
@@ -28,14 +30,15 @@ Finally, on the proposed due date the assignees for the upcoming release proceed
     - If any, manually correct it then open an issue to automate version number bumping later
     - Versions table in the `README.md` update itself automatically
 - Generate the change log https://github.com/leodido/rn2md, or https://fs.fntlnz.wtf/falco/milestones-changelog.txt for the lazy people (it updates every 5 minutes)
-- Add the lastest changes on top the previous `CHANGELOG.md`
+    - If you review timeout errors with `rn2md` try to generate an GitHub Oauth access token and use `-t`
+- Add the latest changes on top the previous `CHANGELOG.md`
 - Submit a PR with the above modifications
 - Await PR approval
-- Close the completed milestone as soon PR is merged
+- Close the completed milestone as soon as the PR is merged
 
 ## Release
 
-Let `x.y.z` the new version.
+Now assume `x.y.z` is the new version.
 
 ### 1. Create a tag
 
@@ -58,21 +61,45 @@ Let `x.y.z` the new version.
 - Use `x.y.z` both as tag version and release title
 - Use the following template to fill the release description:
     ```
+    <!-- Substitute x.y.z with the current release version -->
+
+    | Packages | Download                                                                                                                                               |
+    | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
+    | rpm      | [![rpm](https://img.shields.io/badge/Falco-x.y.z-%2300aec7?style=flat-square)](https://dl.bintray.com/falcosecurity/rpm/falco-x.y.z-x86_64.rpm)        |
+    | deb      | [![deb](https://img.shields.io/badge/Falco-x.y.z-%2300aec7?style=flat-square)](https://dl.bintray.com/falcosecurity/deb/stable/falco-x.y.z-x86_64.deb) |
+    | tgz      | [![tgz](https://img.shields.io/badge/Falco-x.y.z-%2300aec7?style=flat-square)](https://dl.bintray.com/falcosecurity/bin/x86_64/falco-x.y.z-x86_64.deb) |
+
+    | Images                                                          |
+    | --------------------------------------------------------------- |
+    | `docker pull docker.io/falcosecurity/falco:_tag_`               |
+    | `docker pull docker.io/falcosecurity/falco-driver-loader:_tag_` |
+    | `docker pull docker.io/falcosecurity/falco-no-driver:_tag_`     |
+
     <!-- Copy the relevant part of the changelog here -->
 
     ### Statistics
 
-    | Merged PRs        | Number  |
-    |-------------------|---------|
-    | Not user-facing   | x       |
-    | Release note      | x       |
-    | Total             | x       |
+    | Merged PRs      | Number |
+    | --------------- | ------ |
+    | Not user-facing | x      |
+    | Release note    | x      |
+    | Total           | x      |
 
     <!-- Calculate stats and fill the above table -->
     ```
 
 - Finally, publish the release!
 
+### 3. Update the meeting notes
+
+For each release we archive the meeting notes in git for historical purposes.
+
+ - The notes from the Falco meetings can be [found here](https://hackmd.io/6sEAlInlSaGnLz2FnFz21A).
+    - Note: There may be other notes from working groups that can optionally be added as well as needed.
+ - Add the entire content of the document to a new file in [github.com/falcosecurity/community/tree/master/meeting-notes](https://github.com/falcosecurity/community/tree/master/meeting-notes) as a new file labeled `release-x.y.z.md`
+ - Open up a pull request with the new change.
+
+
 ## Post-Release tasks
 
 Announce the new release to the world!

brand/README.md

@@ -15,6 +15,21 @@ There are 3 logos available for use in this directory. Use the primary logo unle
 
 The Falco logo is Apache 2 licensed and free to use in media and publication for the CNCF Falco project.
 
+### Colors
+
+| Name      | PMS  | RGB         |
+|-----------|------|-------------|
+| Teal      | 3125 |   0 174 199 |
+| Cool Gray |   11 |  83  86  90 |
+| Black     |      |   0   0   0 |
+| Blue-Gray | 7700 |  22 92 125  |
+| Gold      | 1375 | 255 158  27 |
+| Orange    |  171 | 255  92  57 |
+| Emerald   | 3278 |   0 155 119 |
+| Green     |  360 | 108 194  74 |
+
+The primary colors are those in the first two rows.
+
 ### Slogan
 
 > Cloud Native Runtime Security

cmake/modules/CPackConfig.cmake

@@ -25,10 +25,20 @@ set(CPACK_PROJECT_CONFIG_FILE "${PROJECT_SOURCE_DIR}/cmake/cpack/CMakeCPackOptio
 set(CPACK_STRIP_FILES "ON")
 set(CPACK_PACKAGE_RELOCATABLE "OFF")
 
-set(CPACK_GENERATOR DEB RPM TGZ)
+if(NOT CPACK_GENERATOR)
+    set(CPACK_GENERATOR DEB RPM TGZ)
+endif()
 
+message(STATUS "Using package generators: ${CPACK_GENERATOR}")
+message(STATUS "Package architecture: ${CMAKE_SYSTEM_PROCESSOR}")
 set(CPACK_DEBIAN_PACKAGE_SECTION "utils")
-set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64")
+
+if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "x86_64")
+  set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64")
+endif()
+if(${CMAKE_SYSTEM_PROCESSOR} STREQUAL "aarch64")
+  set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "arm64")
+endif()
 set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "https://www.falco.org")
 set(CPACK_DEBIAN_PACKAGE_DEPENDS "dkms (>= 2.1.0.0)")
 set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA

cmake/modules/DownloadStringViewLite.cmake

@@ -15,7 +15,7 @@ include(ExternalProject)
 
 set(STRING_VIEW_LITE_PREFIX ${CMAKE_BINARY_DIR}/string-view-lite-prefix)
 set(STRING_VIEW_LITE_INCLUDE ${STRING_VIEW_LITE_PREFIX}/include)
-message(STATUS "Found string-view-lite: include: ${STRING_VIEW_LITE_INCLUDE}")
+message(STATUS "Using bundled string-view-lite in ${STRING_VIEW_LITE_INCLUDE}")
 
 ExternalProject_Add(
   string-view-lite

cmake/modules/b64.cmake

@@ -0,0 +1,27 @@
+#
+# Copyright (C) 2020 The Falco 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.
+#
+
+set(B64_SRC "${PROJECT_BINARY_DIR}/b64-prefix/src/b64")
+message(STATUS "Using bundled b64 in '${B64_SRC}'")
+set(B64_INCLUDE "${B64_SRC}/include")
+set(B64_LIB "${B64_SRC}/src/libb64.a")
+externalproject_add(
+  b64
+  URL "https://github.com/libb64/libb64/archive/ce864b17ea0e24a91e77c7dd3eb2d1ac4175b3f0.tar.gz"
+  URL_HASH "SHA256=d07173e66f435e5c77dbf81bd9313f8d0e4a3b4edd4105a62f4f8132ba932811"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND ${CMD_MAKE}
+  BUILD_IN_SOURCE 1
+  BUILD_BYPRODUCTS ${B64_LIB}
+  INSTALL_COMMAND ""
+)

cmake/modules/gRPC.cmake

@@ -96,12 +96,17 @@ else()
   # that zlib will be very outdated
   set(ZLIB_INCLUDE "${GRPC_SRC}/third_party/zlib")
   set(ZLIB_LIB "${GRPC_LIBS_ABSOLUTE}/libz.a")
+  # we tell gRPC to compile c-ares for us because when a gRPC package is not available, like on CentOS, it's very likely
+  # that c-ares will be very outdated
+  set(CARES_INCLUDE "${GRPC_SRC}/third_party/cares" "${GRPC_SRC}/third_party/cares/cares")
+  set(CARES_LIB "${GRPC_LIBS_ABSOLUTE}/libares.a")
 
   message(STATUS "Using bundled gRPC in '${GRPC_SRC}'")
   message(
     STATUS
       "Bundled gRPC comes with protobuf: compiler: ${PROTOC}, include: ${PROTOBUF_INCLUDE}, lib: ${PROTOBUF_LIB}")
   message(STATUS "Bundled gRPC comes with zlib: include: ${ZLIB_INCLUDE}, lib: ${ZLIB_LIB}}")
+  message(STATUS "Bundled gRPC comes with cares: include: ${CARES_INCLUDE}, lib: ${CARES_LIB}}")
   message(STATUS "Bundled gRPC comes with gRPC C++ plugin: include: ${GRPC_CPP_PLUGIN}")
 
   get_filename_component(PROTOC_DIR ${PROTOC} PATH)
@@ -110,7 +115,7 @@ else()
     grpc
     DEPENDS openssl
     GIT_REPOSITORY https://github.com/grpc/grpc.git
-    GIT_TAG v1.31.1
+    GIT_TAG v1.32.0
     GIT_SUBMODULES "third_party/protobuf third_party/zlib third_party/cares/cares third_party/abseil-cpp third_party/re2"
     BUILD_IN_SOURCE 1
     BUILD_BYPRODUCTS ${GRPC_LIB} ${GRPCPP_LIB}

cmake/modules/libyaml.cmake

@@ -15,12 +15,13 @@ set(LIBYAML_SRC "${PROJECT_BINARY_DIR}/libyaml-prefix/src/libyaml")
 set(LIBYAML_INSTALL_DIR "${LIBYAML_SRC}/target")
 message(STATUS "Using bundled libyaml in '${LIBYAML_SRC}'")
 set(LIBYAML_LIB "${LIBYAML_SRC}/src/.libs/libyaml.a")
-ExternalProject_Add(
-libyaml
-URL "https://github.com/yaml/libyaml/releases/download/0.2.5/yaml-0.2.5.tar.gz"
-URL_HASH "SHA256=c642ae9b75fee120b2d96c712538bd2cf283228d2337df2cf2988e3c02678ef4"
-CONFIGURE_COMMAND ./configure --prefix=${LIBYAML_INSTALL_DIR} CFLAGS=-fPIC CPPFLAGS=-fPIC --enable-static=true --enable-shared=false
-BUILD_COMMAND ${CMD_MAKE} 
-BUILD_IN_SOURCE 1
-INSTALL_COMMAND ${CMD_MAKE} install)
-
+externalproject_add(
+  libyaml
+  URL "https://github.com/yaml/libyaml/releases/download/0.2.5/yaml-0.2.5.tar.gz"
+  URL_HASH "SHA256=c642ae9b75fee120b2d96c712538bd2cf283228d2337df2cf2988e3c02678ef4"
+  CONFIGURE_COMMAND ./configure --prefix=${LIBYAML_INSTALL_DIR} CFLAGS=-fPIC CPPFLAGS=-fPIC --enable-static=true --enable-shared=false
+  BUILD_COMMAND ${CMD_MAKE}
+  BUILD_IN_SOURCE 1
+  BUILD_BYPRODUCTS ${LIBYAML_LIB}
+  INSTALL_COMMAND ${CMD_MAKE} install
+)

cmake/modules/lpeg.cmake

@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2020 The Falco 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.
+#
+
+set(LPEG_SRC "${PROJECT_BINARY_DIR}/lpeg-prefix/src/lpeg")
+set(LPEG_LIB "${PROJECT_BINARY_DIR}/lpeg-prefix/src/lpeg/build/lpeg.a")
+message(STATUS "Using bundled lpeg in '${LPEG_SRC}'")
+set(LPEG_DEPENDENCIES "")
+list(APPEND LPEG_DEPENDENCIES "luajit")
+ExternalProject_Add(
+  lpeg
+  DEPENDS ${LPEG_DEPENDENCIES}
+  URL "http://www.inf.puc-rio.br/~roberto/lpeg/lpeg-1.0.2.tar.gz"
+  URL_HASH "SHA256=48d66576051b6c78388faad09b70493093264588fcd0f258ddaab1cdd4a15ffe"
+  BUILD_COMMAND LUA_INCLUDE=${LUAJIT_INCLUDE} "${PROJECT_SOURCE_DIR}/scripts/build-lpeg.sh" "${LPEG_SRC}/build"
+  BUILD_IN_SOURCE 1
+  BUILD_BYPRODUCTS ${LPEG_LIB}
+  CONFIGURE_COMMAND ""
+  INSTALL_COMMAND "")

cmake/modules/luajit.cmake

@@ -0,0 +1,27 @@
+#
+# Copyright (C) 2020 The Falco 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.
+#
+
+set(LUAJIT_SRC "${PROJECT_BINARY_DIR}/luajit-prefix/src/luajit/src")
+message(STATUS "Using bundled LuaJIT in '${LUAJIT_SRC}'")
+set(LUAJIT_INCLUDE "${LUAJIT_SRC}")
+set(LUAJIT_LIB "${LUAJIT_SRC}/libluajit.a")
+externalproject_add(
+  luajit
+  GIT_REPOSITORY "https://github.com/LuaJIT/LuaJIT"
+  GIT_TAG "1d8b747c161db457e032a023ebbff511f5de5ec2"
+  CONFIGURE_COMMAND ""
+  BUILD_COMMAND ${CMD_MAKE}
+  BUILD_IN_SOURCE 1
+  BUILD_BYPRODUCTS ${LUAJIT_LIB}
+  INSTALL_COMMAND ""
+)

cmake/modules/lyaml.cmake

@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2020 The Falco 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.
+#
+
+set(LYAML_SRC "${PROJECT_BINARY_DIR}/lyaml-prefix/src/lyaml/ext/yaml")
+set(LYAML_LIB "${LYAML_SRC}/.libs/yaml.a")
+message(STATUS "Using bundled lyaml in '${LYAML_SRC}'")
+externalproject_add(
+  lyaml
+  DEPENDS luajit libyaml
+  URL "https://github.com/gvvaughan/lyaml/archive/release-v6.0.tar.gz"
+  URL_HASH "SHA256=9d7cf74d776999ff6f758c569d5202ff5da1f303c6f4229d3b41f71cd3a3e7a7"
+  BUILD_COMMAND ${CMD_MAKE}
+  BUILD_IN_SOURCE 1
+  BUILD_BYPRODUCTS ${LYAML_LIB}
+  CONFIGURE_COMMAND ./configure --enable-static CFLAGS=-I${LIBYAML_INSTALL_DIR}/include CPPFLAGS=-I${LIBYAML_INSTALL_DIR}/include LDFLAGS=-L${LIBYAML_INSTALL_DIR}/lib LIBS=-lyaml LUA=${LUAJIT_SRC}/luajit LUA_INCLUDE=-I${LUAJIT_INCLUDE}
+  INSTALL_COMMAND sh -c
+  "cp -R ${PROJECT_BINARY_DIR}/lyaml-prefix/src/lyaml/lib/* ${PROJECT_SOURCE_DIR}/userspace/engine/lua"
+)

cmake/modules/static-analysis.cmake

@@ -0,0 +1,42 @@
+# create the reports folder
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/static-analysis-reports)
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/static-analysis-reports/cppcheck)
+
+# cppcheck
+find_program(CPPCHECK cppcheck)
+find_program(CPPCHECK_HTMLREPORT cppcheck-htmlreport)
+
+if(NOT CPPCHECK)
+  message(STATUS "cppcheck command not found, static code analysis using cppcheck will not be available.")
+else()
+  message(STATUS "cppcheck found at: ${CPPCHECK}")
+  # we are aware that cppcheck can be run
+  # along with the software compilation in a single step
+  # using the CMAKE_CXX_CPPCHECK variables.
+  # However, for practical needs we want to keep the
+  # two things separated and have a specific target for it.
+  # Our cppcheck target reads the compilation database produced by CMake
+  set(CMAKE_EXPORT_COMPILE_COMMANDS On)
+  add_custom_target(
+      cppcheck
+      COMMAND ${CPPCHECK}
+      "--enable=all"
+      "--force"
+      "--inconclusive"
+      "--inline-suppr" # allows to specify suppressions directly in source code
+      "--project=${CMAKE_CURRENT_BINARY_DIR}/compile_commands.json" # use the compilation database as source
+      "--quiet"
+      "--xml" # we want to generate a report
+      "--output-file=${CMAKE_CURRENT_BINARY_DIR}/static-analysis-reports/cppcheck/cppcheck.xml" # generate the report under the reports folder in the build folder
+      "-i${CMAKE_CURRENT_BINARY_DIR}"# exclude the build folder
+  )
+endif() # CPPCHECK
+
+if(NOT CPPCHECK_HTMLREPORT)
+  message(STATUS "cppcheck-htmlreport command not found, will not be able to produce html reports for cppcheck results")
+else()
+  message(STATUS "cppcheck-htmlreport found at: ${CPPCHECK_HTMLREPORT}")
+  add_custom_target(
+    cppcheck_htmlreport
+    COMMAND ${CPPCHECK_HTMLREPORT} --title=${CMAKE_PROJECT_NAME} --report-dir=${CMAKE_CURRENT_BINARY_DIR}/static-analysis-reports/cppcheck --file=static-analysis-reports/cppcheck/cppcheck.xml)
+endif() # CPPCHECK_HTMLREPORT

cmake/modules/sysdig-repo/CMakeLists.txt

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019 The Falco Authors.
+# Copyright (C) 2020 The Falco 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
@@ -25,4 +25,4 @@ ExternalProject_Add(
   BUILD_COMMAND ""
   INSTALL_COMMAND ""
   TEST_COMMAND ""
-  PATCH_COMMAND patch -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/patch/libscap.patch)
+  PATCH_COMMAND patch -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/patch/libscap.patch && patch -p1 -i ${CMAKE_CURRENT_SOURCE_DIR}/patch/luajit.patch)

cmake/modules/sysdig-repo/patch/luajit.patch

@@ -0,0 +1,57 @@
+diff --git a/userspace/libsinsp/chisel.cpp b/userspace/libsinsp/chisel.cpp
+index 0a6e3cf8..0c2e255a 100644
+--- a/userspace/libsinsp/chisel.cpp
++++ b/userspace/libsinsp/chisel.cpp
+@@ -98,7 +98,7 @@ void lua_stackdump(lua_State *L)
+ // Lua callbacks
+ ///////////////////////////////////////////////////////////////////////////////
+ #ifdef HAS_LUA_CHISELS
+-const static struct luaL_reg ll_sysdig [] =
++const static struct luaL_Reg ll_sysdig [] =
+ {
+ 	{"set_filter", &lua_cbacks::set_global_filter},
+ 	{"set_snaplen", &lua_cbacks::set_snaplen},
+@@ -134,7 +134,7 @@ const static struct luaL_reg ll_sysdig [] =
+ 	{NULL,NULL}
+ };
+ 
+-const static struct luaL_reg ll_chisel [] =
++const static struct luaL_Reg ll_chisel [] =
+ {
+ 	{"request_field", &lua_cbacks::request_field},
+ 	{"set_filter", &lua_cbacks::set_filter},
+@@ -146,7 +146,7 @@ const static struct luaL_reg ll_chisel [] =
+ 	{NULL,NULL}
+ };
+ 
+-const static struct luaL_reg ll_evt [] =
++const static struct luaL_Reg ll_evt [] =
+ {
+ 	{"field", &lua_cbacks::field},
+ 	{"get_num", &lua_cbacks::get_num},
+diff --git a/userspace/libsinsp/lua_parser.cpp b/userspace/libsinsp/lua_parser.cpp
+index 0e26617d..78810d96 100644
+--- a/userspace/libsinsp/lua_parser.cpp
++++ b/userspace/libsinsp/lua_parser.cpp
+@@ -32,7 +32,7 @@ extern "C" {
+ #include "lauxlib.h"
+ }
+ 
+-const static struct luaL_reg ll_filter [] =
++const static struct luaL_Reg ll_filter [] =
+ {
+ 	{"rel_expr", &lua_parser_cbacks::rel_expr},
+ 	{"bool_op", &lua_parser_cbacks::bool_op},
+diff --git a/userspace/libsinsp/lua_parser_api.cpp b/userspace/libsinsp/lua_parser_api.cpp
+index c89e9126..c3d8008a 100644
+--- a/userspace/libsinsp/lua_parser_api.cpp
++++ b/userspace/libsinsp/lua_parser_api.cpp
+@@ -266,7 +266,7 @@ int lua_parser_cbacks::rel_expr(lua_State *ls)
+ 					string err = "Got non-table as in-expression operand\n";
+ 					throw sinsp_exception("parser API error");
+ 				}
+-				int n = luaL_getn(ls, 4);  /* get size of table */
++				int n = lua_objlen (ls, 4);  /* get size of table */
+ 				for (i=1; i<=n; i++)
+ 				{
+ 					lua_rawgeti(ls, 4, i);

cmake/modules/sysdig.cmake

@@ -17,7 +17,9 @@ set(SYSDIG_CMAKE_WORKING_DIR "${CMAKE_BINARY_DIR}/sysdig-repo")
 # this needs to be here at the top
 if(USE_BUNDLED_DEPS)
   # explicitly force this dependency to use the bundled OpenSSL
-  set(USE_BUNDLED_OPENSSL ON)
+  if(NOT MINIMAL_BUILD)
+    set(USE_BUNDLED_OPENSSL ON)
+  endif()
   set(USE_BUNDLED_JQ ON)
 endif()
 
@@ -27,8 +29,8 @@ file(MAKE_DIRECTORY ${SYSDIG_CMAKE_WORKING_DIR})
 # default below In case you want to test against another sysdig version just pass the variable - ie., `cmake
 # -DSYSDIG_VERSION=dev ..`
 if(NOT SYSDIG_VERSION)
-  set(SYSDIG_VERSION "ae104eb20ff0198a5dcb0c91cc36c86e7c3f25c7")
-  set(SYSDIG_CHECKSUM "SHA256=43d274e4ce16b0d0e4dd00aab78006c902f36070d1cbb22d12a2685134a2ae51")
+  set(SYSDIG_VERSION "new/next-per-cpu")
+  set(SYSDIG_CHECKSUM "SHA256=6d2b1881bc49629d448f6a08ab3e85d6cc4c74788f9ed9e13cb402a9958de303")
 endif()
 set(PROBE_VERSION "${SYSDIG_VERSION}")
 
@@ -55,6 +57,10 @@ add_subdirectory("${SYSDIG_SOURCE_DIR}/driver" "${PROJECT_BINARY_DIR}/driver")
 # Add libscap directory
 add_definitions(-D_GNU_SOURCE)
 add_definitions(-DHAS_CAPTURE)
+add_definitions(-DNOCURSESUI)
+if(MUSL_OPTIMIZED_BUILD)
+  add_definitions(-DMUSL_OPTIMIZED)
+endif()
 add_subdirectory("${SYSDIG_SOURCE_DIR}/userspace/libscap" "${PROJECT_BINARY_DIR}/userspace/libscap")
 
 # Add libsinsp directory
@@ -65,5 +71,8 @@ add_dependencies(sinsp tbb b64 luajit)
 set(CREATE_TEST_TARGETS OFF)
 
 if(USE_BUNDLED_DEPS)
-  add_dependencies(scap grpc curl jq)
+  add_dependencies(scap jq)
+  if(NOT MINIMAL_BUILD)
+    add_dependencies(scap curl grpc)
+  endif()
 endif()

docker/builder/root/usr/bin/entrypoint

@@ -34,6 +34,7 @@ case "$CMD" in
     -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DBUILD_DRIVER="$BUILD_DRIVER" \
+    -DMINIMAL_BUILD="$MINIMAL_BUILD" \
     -DBUILD_BPF="$BUILD_BPF" \
     -DBUILD_WARNINGS_AS_ERRORS="$BUILD_WARNINGS_AS_ERRORS" \
     -DFALCO_VERSION="$FALCO_VERSION" \

docker/no-driver/Dockerfile

@@ -12,47 +12,16 @@ WORKDIR /
 
 ADD https://bintray.com/api/ui/download/falcosecurity/${VERSION_BUCKET}/x86_64/falco-${FALCO_VERSION}-x86_64.tar.gz /
 
-RUN apt-get update -y && \
-    apt-get install -y binutils && \
-    tar -xvf falco-${FALCO_VERSION}-x86_64.tar.gz && \
+RUN tar -xvf falco-${FALCO_VERSION}-x86_64.tar.gz && \
     rm -f falco-${FALCO_VERSION}-x86_64.tar.gz && \
     mv falco-${FALCO_VERSION}-x86_64 falco && \
-    strip falco/usr/bin/falco && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
+    rm -rf falco/usr/src/falco-* falco/usr/bin/falco-driver-loader
 
 RUN sed -e 's/time_format_iso_8601: false/time_format_iso_8601: true/' < /falco/etc/falco/falco.yaml > /falco/etc/falco/falco.yaml.new \
     && mv /falco/etc/falco/falco.yaml.new /falco/etc/falco/falco.yaml
 
 FROM scratch
 
-COPY --from=ubuntu /lib/x86_64-linux-gnu/libanl.so.1 \
-    /lib/x86_64-linux-gnu/libc.so.6 \
-    /lib/x86_64-linux-gnu/libdl.so.2 \
-    /lib/x86_64-linux-gnu/libgcc_s.so.1 \
-    /lib/x86_64-linux-gnu/libm.so.6 \
-    /lib/x86_64-linux-gnu/libnsl.so.1 \
-    /lib/x86_64-linux-gnu/libnss_compat.so.2 \
-    /lib/x86_64-linux-gnu/libnss_files.so.2 \
-    /lib/x86_64-linux-gnu/libnss_nis.so.2 \
-    /lib/x86_64-linux-gnu/libpthread.so.0 \
-    /lib/x86_64-linux-gnu/librt.so.1 \
-    /lib/x86_64-linux-gnu/libz.so.1 \
-    /lib/x86_64-linux-gnu/
-
-COPY --from=ubuntu /usr/lib/x86_64-linux-gnu/libstdc++.so.6 \
-    /usr/lib/x86_64-linux-gnu/libstdc++.so.6
-
-COPY --from=ubuntu /etc/ld.so.cache \
-    /etc/nsswitch.conf \
-    /etc/ld.so.cache \
-    /etc/passwd \
-    /etc/group \
-    /etc/
-
-COPY --from=ubuntu /etc/default/nss /etc/default/nss
-COPY --from=ubuntu /lib64/ld-linux-x86-64.so.2 /lib64/ld-linux-x86-64.so.2
-
 COPY --from=ubuntu /falco /
 
 CMD ["/usr/bin/falco", "-o", "time_format_iso_8601=true"]

docker/tester/root/usr/bin/entrypoint

@@ -1,12 +1,15 @@
 #!/usr/bin/env bash
 
-set -eu -o pipefail
+BUILD_DIR=${BUILD_DIR:-/build}
+SOURCE_DIR=${SOURCE_DIR:-/source}
+SKIP_PACKAGES_TESTS=${SKIP_PACKAGES_TESTS:-false}
 
-SOURCE_DIR=/source
-BUILD_DIR=/build
 CMD=${1:-test}
 shift
 
+# Stop the execution if a command in the pipeline has an error, from now on
+set -e -u -o pipefail
+
 # build type can be "debug" or "release", fallbacks to "release" by default
 BUILD_TYPE=$(echo "$BUILD_TYPE" | tr "[:upper:]" "[:lower:]")
 case "$BUILD_TYPE" in
@@ -47,7 +50,8 @@ case "$CMD" in
 "test")
     if [ -z "$FALCO_VERSION" ]; then
         echo "Automatically figuring out Falco version."
-        FALCO_VERSION=$("$BUILD_DIR/$BUILD_TYPE/userspace/falco/falco" --version | head -n 1 | cut -d' ' -f3 | tr -d '\r')
+        FALCO_VERSION_FULL=$("$BUILD_DIR/$BUILD_TYPE/userspace/falco/falco" --version)
+        FALCO_VERSION=$(echo "$FALCO_VERSION_FULL" | head -n 1 | cut -d' ' -f3  | tr -d '\r')
         echo "Falco version: $FALCO_VERSION"
     fi
     if [ -z "$FALCO_VERSION" ]; then
@@ -56,9 +60,11 @@ case "$CMD" in
     fi
 
     # build docker images
-    build_image "$BUILD_DIR" "$BUILD_TYPE" "$FALCO_VERSION" "deb"
-    build_image "$BUILD_DIR" "$BUILD_TYPE" "$FALCO_VERSION" "rpm"
-    build_image "$BUILD_DIR" "$BUILD_TYPE" "$FALCO_VERSION" "tar.gz"
+    if [ "$SKIP_PACKAGES_TESTS" = false ] ; then
+        build_image "$BUILD_DIR" "$BUILD_TYPE" "$FALCO_VERSION" "deb"
+        build_image "$BUILD_DIR" "$BUILD_TYPE" "$FALCO_VERSION" "rpm"
+        build_image "$BUILD_DIR" "$BUILD_TYPE" "$FALCO_VERSION" "tar.gz"
+    fi
 
     # check that source directory contains Falco
     if [ ! -d "$SOURCE_DIR/falco/test" ]; then
@@ -69,12 +75,14 @@ case "$CMD" in
     # run tests
     echo "Running regression tests ..."
     cd "$SOURCE_DIR/falco/test"
-    ./run_regression_tests.sh -d "$BUILD_DIR/$BUILD_TYPE"
+    SKIP_PACKAGES_TESTS=$SKIP_PACKAGES_TESTS ./run_regression_tests.sh -d "$BUILD_DIR/$BUILD_TYPE"
 
     # clean docker images
-    clean_image "deb"
-    clean_image "rpm"
-    clean_image "tar.gz"
+    if [ "$SKIP_PACKAGES_TESTS" = false ] ; then
+        clean_image "deb"
+        clean_image "rpm"
+        clean_image "tar.gz"
+    fi
     ;;
 "bash")
     CMD=/bin/bash

proposals/20200506-artifacts-scope-part-1.md

@@ -4,7 +4,7 @@ The **Falco Artifact Scope** proposal is divided in two parts:
 1. the Part 1 - *this document*: the State of Art of Falco artifacts
 2. the [Part 2](./20200506-artifacts-scope-part-2.md): the intended state moving forward
 
-## Summary 
+## Summary
 
 As a project we would like to support the following artifacts.
 
@@ -16,7 +16,7 @@ Inspired by many previous issues and many of the weekly community calls.
 
 ## Terms
 
-**falco** 
+**falco**
 
 *The Falco binary*
 
@@ -30,12 +30,12 @@ Inspired by many previous issues and many of the weekly community calls.
 
 **package**
 
-*An installable artifact that is operating system specific. All packages MUST be hosted on bintray.*
+*An installable artifact that is operating system specific. All packages MUST be hosted on [bintray](https://bintray.com/falcosecurity).*
 
 **image**
 
 *OCI compliant container image hosted on dockerhub with tags for every release and the current master branch.*
- 
+
 
 # Packages
 
@@ -52,11 +52,11 @@ List of currently official container images (for X86 64bits only):
 
 | Name | Directory | Description |
 |---|---|---|
-| [falcosecurity/falco:latest](https://hub.docker.com/repository/docker/falcosecurity/falco), [falcosecurity/falco:_tag_](https://hub.docker.com/repository/docker/falcosecurity/falco), [falcosecurity/falco:master](https://hub.docker.com/repository/docker/falcosecurity/falco) | docker/stable | Falco (DEB built from git tag or from the master) with all the building toolchain. | 
-| [falcosecurity/falco:latest-slim](https://hub.docker.com/repository/docker/falcosecurity/falco), [falcosecurity/falco:_tag_-slim](https://hub.docker.com/repository/docker/falcosecurity/falco),[falcosecurity/falco:master-slim](https://hub.docker.com/repository/docker/falcosecurity/falco) | docker/slim | Falco (DEB build from git tag or from the master) without the building toolchain. | 
-| [falcosecurity/falco-driver-loader:latest](https://hub.docker.com/repository/docker/falcosecurity/falco-driver-loader), [falcosecurity/falco-driver-loader:_tag_](https://hub.docker.com/repository/docker/falcosecurity/falco-driver-loader), [falcosecurity/falco-driver-loader:master](https://hub.docker.com/repository/docker/falcosecurity/falco-driver-loader) | docker/driver-loader | `falco-driver-loader` as entrypoint with the building toolchain. | 
-| [falcosecurity/falco-builder:latest](https://hub.docker.com/repository/docker/falcosecurity/falco-builder) | docker/builder | The complete build tool chain for compiling Falco from source. See [the documentation](https://falco.org/docs/source/) for more details on building from source. Used to build Falco (CI). | 
-| [falcosecurity/falco-tester:latest](https://hub.docker.com/repository/docker/falcosecurity/falco-tester) | docker/tester | Container image for running the Falco test suite. Used to run Falco integration tests (CI). | 
+| [falcosecurity/falco:latest](https://hub.docker.com/repository/docker/falcosecurity/falco), [falcosecurity/falco:_tag_](https://hub.docker.com/repository/docker/falcosecurity/falco), [falcosecurity/falco:master](https://hub.docker.com/repository/docker/falcosecurity/falco) | docker/stable | Falco (DEB built from git tag or from the master) with all the building toolchain. |
+| [falcosecurity/falco:latest-slim](https://hub.docker.com/repository/docker/falcosecurity/falco), [falcosecurity/falco:_tag_-slim](https://hub.docker.com/repository/docker/falcosecurity/falco),[falcosecurity/falco:master-slim](https://hub.docker.com/repository/docker/falcosecurity/falco) | docker/slim | Falco (DEB build from git tag or from the master) without the building toolchain. |
+| [falcosecurity/falco-driver-loader:latest](https://hub.docker.com/repository/docker/falcosecurity/falco-driver-loader), [falcosecurity/falco-driver-loader:_tag_](https://hub.docker.com/repository/docker/falcosecurity/falco-driver-loader), [falcosecurity/falco-driver-loader:master](https://hub.docker.com/repository/docker/falcosecurity/falco-driver-loader) | docker/driver-loader | `falco-driver-loader` as entrypoint with the building toolchain. |
+| [falcosecurity/falco-builder:latest](https://hub.docker.com/repository/docker/falcosecurity/falco-builder) | docker/builder | The complete build tool chain for compiling Falco from source. See [the documentation](https://falco.org/docs/source/) for more details on building from source. Used to build Falco (CI). |
+| [falcosecurity/falco-tester:latest](https://hub.docker.com/repository/docker/falcosecurity/falco-tester) | docker/tester | Container image for running the Falco test suite. Used to run Falco integration tests (CI). |
 | _to not be published_ | docker/local | Built on-the-fly and used by falco-tester. |
 
 **Note**: `falco-builder`, `falco-tester` (and the `docker/local` image which it's built on the fly by the `falco-tester` one) are not integrated into the release process because they are development and CI tools that need to be manually pushed only when updated.
@@ -76,7 +76,7 @@ This new [contrib](https://github.com/falcosecurity/contrib) repository will be
 
 ### repository
 
-"_Incubating level_" projects such as [falco-exporter](https://github.com/falco-exporter) can be promoted from `contrib` to their own repository. 
+"_Incubating level_" projects such as [falco-exporter](https://github.com/falco-exporter) can be promoted from `contrib` to their own repository.
 
 This is done as needed, and can best be measured by the need to cut a release and use the GitHub release features. Again, this is at the discretion of the Falco open source community.
 
@@ -92,7 +92,7 @@ The *Part 1* is mainly intended as a cleanup process.
 For each item not listed above, ask if it needs to be moved or deleted.
 After the cleanup process, all items will match the *Part 1* of this proposal.
 
-    
+
 ### Action Items
 
 Here are SOME of the items that would need to be done, for example:

proposals/20200818-artifacts-storage.md

@@ -0,0 +1,83 @@
+# Falco Artifacts Storage
+
+This document reflects the way we store the Falco artifacts.
+
+## Terms & Definitions
+
+- [Falco artifacts](./20200506-artifacts-scope-part-1.md)
+- Bintray: artifacts distribution platform
+
+## Packages
+
+The Falco packages are **automatically** built and sent to [bintray](https://bintray.com/falcosecurity) in the following cases:
+
+- a pull request gets merged into the master branch (**Falco development releases**)
+- a new Falco release (git tag) happens on the master branch (**Falco stable releases**)
+
+The only prerequisite is that the specific Falco source code builds successfully and that the tests pass.
+
+As per [Falco Artifacts Scope (#1)](./20200506-artifacts-scope-part-1.md) proposal we provide three kind of Falco packages:
+
+- DEB
+- RPM
+- Tarball
+
+Thus, we have three repositories for the Falco stable releases:
+
+- https://bintray.com/falcosecurity/deb
+- https://bintray.com/falcosecurity/rpm
+- https://bintray.com/falcosecurity/bin
+
+And three repositories for the Falco development releases:
+
+- https://bintray.com/falcosecurity/deb-dev
+- https://bintray.com/falcosecurity/rpm-dev
+- https://bintray.com/falcosecurity/bin-dev
+
+## Drivers
+
+The process of publishing a set of prebuilt Falco drivers is implemented by the **Drivers Build Grid (DBG)** in the [test-infra](https://github.com/falcosecurity/test-infra/tree/master/driverkit) repository (`driverkit` directory).
+
+This process is driven by the configuration files (YAML) present in the `driverkit/config` directory in the [test-infra](https://github.com/falcosecurity/test-infra/tree/master/driverkit) repository.
+
+Each of these files represents a prebuilt driver (eventually two: kernel module and eBPF probe, when possible) that will be published on [bintray](https://bintray.com/falcosecurity) if it builds correctly.
+
+Every time the `driverkit/config` directory on the master branch has some changes from the previous commit the CI system, which you can find defined in the [.circleci/config.yml](https://github.com/falcosecurity/test-infra/blob/master/.circleci/config.yml) file, takes care of building and publishing all the drivers.
+
+The driver versions we ship prebuilt drivers for are:
+
+- the driver version associated with the last Falco stable version ([see here](https://github.com/falcosecurity/falco/blob/c4b7f17271d1a4ca533b2e672ecaaea5289ccdc5/cmake/modules/sysdig.cmake#L29))
+- the driver version associated with the penultimate Falco stable version
+
+The prebuilt drivers get published into [this](https://bintray.com/falcosecurity/driver) generic artifacts repository.
+
+You can also visualize the full list of prebuilt drivers by driver version visiting this [URL](https://dl.bintray.com/falcosecurity/driver).
+
+### Notice
+
+The generation of new prebuilt drivers takes usually place with a frequency of 1-2 weeks, on a **best-effort** basis.
+
+Thus, it can happen the list of available prebuilt drivers does not yet contain the driver version currently on Falco master.
+
+Nevertheless, this process is an open, auditable, and transparent one.
+
+So, by sending a pull-request towards [test-infra](https://github.com/falcosecurity/test-infra) repository containing the configuration YAML files you can help the Falco community stay on track.
+
+Some pull-requests you can look at to create your own are:
+
+- https://github.com/falcosecurity/test-infra/pull/165
+- https://github.com/falcosecurity/test-infra/pull/163
+- https://github.com/falcosecurity/test-infra/pull/162
+
+While, the documentation of the YAML configuration files can be found [here](https://github.com/falcosecurity/driverkit/blob/master/README.md).
+
+## Container images
+
+As per Falco packages, also the Falco official container images are **automatically** published to the [dockerhub](https://hub.docker.com/r/falcosecurity/falco).
+
+These images are built and published in two cases:
+
+- a pull request gets merged into the master branch (**Falco development releases**)
+- a new Falco release (git tag) happens (**Falco stable releases**)
+
+For a detailed explanation of the container images we build and ship look at the following [documentation](https://github.com/falcosecurity/falco/blob/master/docker/README.md).

proposals/20200901-artifacts-cleanup.md

@@ -0,0 +1,102 @@
+# Falco Artifacts Cleanup
+
+This document reflects when and how we clean up the Falco artifacts from their storage location.
+
+## Motivation
+
+The [bintray](https://bintray.com/falcosecurity) open-source plan offers 10GB free space for storing artifacts.
+
+They also kindly granted us an additional 5GB of free space.
+
+## Goal
+
+Keep the storage space usage under 15GB by cleaning up the [Falco artifacts](./20200506-artifacts-scope-part-1.md) from the [storage](./20200818-artifacts-storage).
+
+## Status
+
+To be implemented.
+
+## Packages
+
+### Tarballs from Falco master
+
+At the moment of writing this document, this kind of Falco package requires approx. 50MB (maximum detected size) of storage space.
+
+Since, historically, the [bin-dev](https://bintray.com/falcosecurity/bin-dev) repository is the less used one, this document proposes to keep only the last 10 **Falco development releases** it contains.
+
+This means that the [bin-dev](https://bintray.com/falcosecurity/bin-dev) repository will take at maximum 500MB of storage space.
+
+### DEB from Falco master
+
+At the moment of writing this document, this kind of Falco package requires approx. 5.1MB (maximum detected size) of storage space.
+
+Historically, every Falco release is composed by less than 50 merges (upper limit).
+
+So, to theoretically retain all the **Falco development releases** that led to a Falco stable release, this document proposes to keep the last 50 Falco DEB packages.
+
+This means that the [deb-dev](https://bintray.com/falcosecurity/deb-dev) repository will take at maximum 255MB of storage space.
+
+### RPM from Falco master
+
+At the moment of writing this document, this kind of Falco package requires approx. 4.3MB (maximum detected size) of storage space.
+
+For the same exact reasons explained above this document proposes to keep the last 50 Falco RPM packages.
+
+This means that the [rpm-dev](https://bintray.com/falcosecurity/rpm-dev) repository will take at maximum 215MB of storage space.
+
+### Stable releases
+
+This document proposes to retain all the stable releases.
+
+This means that all the Falco packages present in the Falco stable release repositories will be kept.
+
+The [bin](https://bintray.com/falcosecurity/bin) repository contains a Falco tarball package for every release.
+This means it grows in space of ~50MB each month.
+
+The [deb](https://bintray.com/falcosecurity/deb) repository contains a Falco DEB package for every release.
+This means it grows in space of ~5MB each month.
+
+The [rpm](https://bintray.com/falcosecurity/rpm) repository contains a Falco RPM package for every release.
+This means it grows in space of ~4.3MB each month.
+
+### Considerations
+
+Assuming the size of the packages does not surpass the numbers listed in the above sections, the **Falco development releases** will always take less that 1GB of artifacts storage space.
+
+Assuming 12 stable releases at year, at the current size of packages, the **Falco stable releases** will take approx. 720MB of storage space every year.
+
+### Implementation
+
+The Falco CI will have a new CI job - called `cleanup/packages-dev` - responsible for removing the **Falco development releases** depending on the above plan.
+
+This job will be triggered after the `publish/packages-dev` completed successfully.
+
+## Drivers
+
+As explained in the [Artifacts Storage](./20200818-artifacts-storage) proposal, we build the drivers for the **last two driver versions** associated with **latest Falco stable releases**.
+Then, we store those drivers into a [generic bintray repository](https://bintray.com/falcosecurity/driver) from which the installation process automatically downloads them, if suitable.
+
+This document proposes to implement a cleanup mechanism that deletes all the other driver versions available.
+
+At the moment of writing, considering only the last two driver versions (**ae104eb**, **85c8895**) associated with the latest Falco stable releases, we ship ~340 eBPF drivers, each accounting for ~3.1MB of storage space, and 1512 kernel modules (~3.1MB size each, too).
+
+Thus, we obtain an estimate of approx. 2.875GB for **each** driver version.
+
+This document proposes to only store the last two driver versions associates with the latest Falco stable releases. And deleting the other ones.
+
+This way, assuming the number of prebuilt drivers does not skyrocket, we can reasonably estimate the storage space used by prebuilt drivers to be around 6GB.
+
+Notice that, in case a Falco stable release will not depend on a new driver version, this means the last two driver versions will, in this case, cover more than the two Falco stable releases.
+
+### Archivation
+
+Since the process of building drivers is time and resource consuming, this document also proposes to move the driver versions in other storage facilities.
+
+The candidate is an AWS S3 bucket responsible for holding the deleted driver version files.
+
+### Implementation
+
+The [test-infra](https://github.com/falcosecurity/test-infra) CI, specifically its part dedicated to run the **Drivers Build Grid** that runs every time it detects changes into the `driverkit` directory of the [test-infra](https://github.com/falcosecurity/test-infra) repository,
+will have a new job - called `drivers/cleanup` - responsible for removing all the Falco driver versions except the last two.
+
+This job will be triggered after the `drivers/publish` completed successfully on the master branch.

proposals/20201025-drivers-storage-s3.md

@@ -0,0 +1,137 @@
+# Falco Drivers Storage S3
+
+Supersedes: [20200818-artifacts-storage.md#drivers](20200818-artifacts-storage.md#drivers)
+
+Supersedes: [20200901-artifacts-cleanup.md#drivers](20200901-artifacts-cleanup.md#drivers)
+
+## Introduction
+
+In the past days, as many people probably noticed, Bintray started rate-limiting our users, effectively preventing them from downloading any kernel module, rpm/deb package or any pre-built dependency we host there.
+
+This does not only interrupt the workflow of our users but also the workflow of the contributors, since without bintray most of our container images and CMake files can’t download the dependencies we mirror.
+
+### What is the cause?
+
+We had a spike in adoption apparently, either a user with many nodes or an increased number of users. We don’t know this detail specifically yet because bintray does not give us very fine-grained statistics on this.
+
+This is the 30-days history:
+
+![A spike on driver downloads the last ten days](20201025-drivers-storage-s3_downloads.png)
+
+As you can see, we can only see that they downloaded the latest kernel module driver version, however we can’t see if:
+
+* It’s a single source or many different users
+
+* What is the kernel/OS they are using
+
+### What do we host on Bintray?
+
+* RPM packages: high traffic but very manageable ~90k downloads a month
+
+* Deb packages:low traffic ~5k downloads a month
+
+* Pre-built image Dependencies: low traffic, will eventually disappear in the future
+
+* Kernel modules: very high traffic, 700k downloads in 10 days, this is what is causing the current problems. They are primarily used by users of our container images.
+
+* eBPF probes: low traffic ~5k downloads a month
+
+### Motivations to go to S3 instead of Bintray for the Drivers
+
+Bintray does an excellent service at building the rpm/deb structures for us, however we also use them for S3-like storage for the drivers. We have ten thousand files hosted there and the combinations are infinite.
+
+
+Before today, we had many issues with storage even without the spike in users we are seeing since the last ten days.
+
+## Context on AWS
+
+Amazon AWS, recently gave credits to the Falco project to operate some parts of the infrastructure on AWS. The CNCF is providing a sub-account we are already using for the migration of the other pieces (like Prow).
+
+## Interactions with other teams and the CNCF
+
+* The setup on the AWS account side already done, this is all technical work.
+
+* We need to open a CNCF service account ticket for the download.falco.org subdomain to point to the S3 bucket we want to use
+
+## The Plan
+
+We want to propose to move the drivers and the container dependencies to S3.
+
+#### Moving means:
+
+* We create a public S3 bucket with [stats enabled](https://docs.aws.amazon.com/AmazonS3/latest/dev/analytics-storage-class.html)
+
+* We attach the bucket to a cloudfront distribution behind the download.falco.org subdomain
+
+* We move the current content keeping the same web server directory structure
+
+* We change the Falco Dockerfiles and driver loader script accordingly
+
+* We update test-infra to push the drivers to S3
+
+* Once we have the drivers in S3, we can ask bintray to relax the limits for this month so that our users are able to download the other packages we keep there. Otherwise they will have to wait until November 1st. We only want to do that after the moving because otherwise we will hit the limits pretty quickly.
+
+#### The repositories we want to move are:
+
+* [https://bintray.com/falcosecurity/driver](https://bintray.com/falcosecurity/driver) will become https://download.falco.org/driver
+
+* [https://bintray.com/falcosecurity/dependencies](https://bintray.com/falcosecurity/dependencies) will become https://download.falco.org/dependencies
+
+#### Changes in Falco
+
+* [Search for bintray ](https://github.com/falcosecurity/falco/search?p=2&q=bintray)on the Falco repo and replace the URL for the CMake and Docker files.
+
+* It’s very important to change the DRIVERS_REPO environment variable [here](https://github.com/falcosecurity/falco/blob/0a33f555eb8e019806b46fea8b80a6302a935421/CMakeLists.txt#L86) - this is what updates the falco-driver-loader scripts that the users and container images use to fetch the module
+
+#### Changes in Test Infra
+
+* We need to use the S3 cli instead of jfrog cli to upload to the s3 bucket after building [here](https://github.com/falcosecurity/test-infra/blob/master/.circleci/config.yml)
+
+* We can probably remove jfrog from that repo since it only deals with drivers and drivers are being put on S3 now
+
+* Instructions on how to setup the S3 directory structure [here](https://falco.org/docs/installation/#install-driver)
+
+    * `/$driver_version$/falco_$target$_$kernelrelease$_$kernelversion$.[ko|o]`
+
+#### Changes to Falco website
+
+* Changes should not be necessary, we are not updating the way people install Falco but only the driver. The driver is managed by a script we can change.
+
+## Mitigation and next steps for the users
+
+* **The average users should be good to go now, Bintray raised our limits and we have some room to do this without requiring manual steps on your end**
+
+* **Users that can’t wait for us to have the S3 setup done: **can setup an S3 as driver repo themselves, push the drivers they need to it after compiling them (they can use [Driverkit](https://github.com/falcosecurity/driverkit) for that) Instructions on how to setup the S3 directory structure [here](https://falco.org/docs/installation/#install-driver).
+
+* **Users that can’t wait but don’t want to setup a webserver themselves**: the falco-driver-loader script can also compile the module for you. Make sure to install the kernel-headers on your nodes.
+
+* **Users that can wait** we will approve this document and act on the plan described here by providing the DRIVERS_REPO at  [https://download.falco.org/driver](https://download.falco.org/driver) that then you can use
+
+### How to use an alternative DRIVERS_REPO ?
+
+**On bash:**
+
+export DRIVERS_REPO=https://your-url-here
+
+**Docker**
+
+Pass it as environment variable using the docker run flag -e - for example:
+
+docker run -e DRIVERS_REPO=[https://your-url-here](https://your-url-here)
+
+**Kubernetes**
+
+spec:
+
+  containers:
+
+  - env:
+
+    - name: DRIVERS_REPO
+
+      value: https://your-url-here
+
+## Release
+
+Next release is on December 1st, we want to rollout a hotfix 0.26.2 release that only contains the updated script before that date so that users don’t get confused and we can just tell them "update Falco" to get the thing working again.
+

rules/CMakeLists.txt

@@ -37,8 +37,7 @@ if(DEFINED FALCO_COMPONENT)
     COMPONENT "${FALCO_COMPONENT}"
     DESTINATION "${FALCO_ETC_DIR}"
     RENAME "${FALCO_LOCAL_RULES_DEST_FILENAME}")
-
-  # Intentionally *not* installing application_rules.yaml. Not needed when falco is embedded in other projects.
+# Intentionally *not* installing application_rules.yaml. Not needed when falco is embedded in other projects.
 else()
   install(
     FILES falco_rules.yaml
@@ -57,8 +56,8 @@ else()
 
   install(
     FILES application_rules.yaml
-    DESTINATION "/etc/falco/rules.available"
+    DESTINATION "${FALCO_ETC_DIR}/rules.available"
     RENAME "${FALCO_APP_RULES_DEST_FILENAME}")
 
-  install(DIRECTORY DESTINATION "/etc/falco/rules.d")
+  install(DIRECTORY DESTINATION "${FALCO_ETC_DIR}/rules.d")
 endif()

rules/falco_rules.yaml

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019 The Falco Authors.
+# Copyright (C) 2020 The Falco Authors.
 #
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -23,7 +23,7 @@
 # change to this rules file, we'll uncomment this line and set it to
 # the falco engine version in use at the time.
 #
-#- required_engine_version: 2
+- required_engine_version: 7
 
 # Currently disabled as read/write are ignored syscalls. The nearly
 # similar open_write/open_read check for files being opened for
@@ -344,8 +344,8 @@
 # for efficiency.
 - macro: inbound_outbound
   condition: >
-    (((evt.type in (accept,listen,connect) and evt.dir=<)) or
-     (fd.typechar = 4 or fd.typechar = 6) and
+    ((((evt.type in (accept,listen,connect) and evt.dir=<)) or
+     (fd.typechar = 4 or fd.typechar = 6)) and
      (fd.ip != "0.0.0.0" and fd.net != "127.0.0.0/8") and
      (evt.rawres >= 0 or evt.res = EINPROGRESS))
 
@@ -368,7 +368,7 @@
 - rule: Disallowed SSH Connection
   desc: Detect any new ssh connection to a host other than those in an allowed group of hosts
   condition: (inbound_outbound) and ssh_port and not allowed_ssh_hosts
-  output: Disallowed SSH Connection (command=%proc.cmdline connection=%fd.name user=%user.name container_id=%container.id image=%container.image.repository)
+  output: Disallowed SSH Connection (command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network, mitre_remote_service]
 
@@ -399,7 +399,7 @@
     ((fd.sip in (allowed_outbound_destination_ipaddrs)) or
      (fd.snet in (allowed_outbound_destination_networks)) or
      (fd.sip.name in (allowed_outbound_destination_domains)))
-  output: Disallowed outbound connection destination (command=%proc.cmdline connection=%fd.name user=%user.name container_id=%container.id image=%container.image.repository)
+  output: Disallowed outbound connection destination (command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network]
 
@@ -422,7 +422,7 @@
     ((fd.cip in (allowed_inbound_source_ipaddrs)) or
      (fd.cnet in (allowed_inbound_source_networks)) or
      (fd.cip.name in (allowed_inbound_source_domains)))
-  output: Disallowed inbound connection source (command=%proc.cmdline connection=%fd.name user=%user.name container_id=%container.id image=%container.image.repository)
+  output: Disallowed inbound connection source (command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network]
 
@@ -461,7 +461,7 @@
     and not proc.name in (shell_binaries)
     and not exe_running_docker_save
   output: >
-    a shell configuration file has been modified (user=%user.name command=%proc.cmdline pcmdline=%proc.pcmdline file=%fd.name container_id=%container.id image=%container.image.repository)
+    a shell configuration file has been modified (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline pcmdline=%proc.pcmdline file=%fd.name container_id=%container.id image=%container.image.repository)
   priority:
     WARNING
   tags: [file, mitre_persistence]
@@ -483,7 +483,7 @@
      fd.directory in (shell_config_directories)) and
     (not proc.name in (shell_binaries))
   output: >
-    a shell configuration file was read by a non-shell program (user=%user.name command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
+    a shell configuration file was read by a non-shell program (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
   priority:
     WARNING
   tags: [file, mitre_discovery]
@@ -502,7 +502,7 @@
     consider_all_cron_jobs and
     not user_known_cron_jobs
   output: >
-    Cron jobs were scheduled to run (user=%user.name command=%proc.cmdline
+    Cron jobs were scheduled to run (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline
     file=%fd.name container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority:
     NOTICE
@@ -512,8 +512,8 @@
 
 # When displaying container information in the output field, use
 # %container.info, without any leading term (file=%fd.name
-# %container.info user=%user.name, and not file=%fd.name
-# container=%container.info user=%user.name). The output will change
+# %container.info user=%user.name user_loginuid=%user.loginuid, and not file=%fd.name
+# container=%container.info user=%user.name user_loginuid=%user.loginuid). The output will change
 # based on the context and whether or not -pk/-pm/-pc was specified on
 # the command line.
 - macro: container
@@ -522,7 +522,7 @@
 - macro: container_started
   condition: >
     ((evt.type = container or
-     (evt.type=execve and evt.dir=< and proc.vpid=1)) and
+     (spawned_process and proc.vpid=1)) and
      container.image.repository != incomplete)
 
 - macro: interactive
@@ -696,8 +696,8 @@
 - macro: run_by_foreman
   condition: >
     (user.name=foreman and
-     (proc.pname in (rake, ruby, scl) and proc.aname[5] in (tfm-rake,tfm-ruby)) or
-     (proc.pname=scl and proc.aname[2] in (tfm-rake,tfm-ruby)))
+     ((proc.pname in (rake, ruby, scl) and proc.aname[5] in (tfm-rake,tfm-ruby)) or
+     (proc.pname=scl and proc.aname[2] in (tfm-rake,tfm-ruby))))
 
 - macro: java_running_sdjagent
   condition: proc.name=java and proc.cmdline contains sdjagent.jar
@@ -746,6 +746,13 @@
 - macro: runuser_reading_pam
   condition: (proc.name=runuser and fd.directory=/etc/pam.d)
 
+# CIS Linux Benchmark program
+- macro: linux_bench_reading_etc_shadow
+  condition: ((proc.aname[2]=linux-bench and
+               proc.name in (awk,cut,grep)) and
+              (fd.name=/etc/shadow or
+               fd.directory=/etc/pam.d))
+
 - macro: parent_ucf_writing_conf
   condition: (proc.pname=ucf and proc.aname[2]=frontend)
 
@@ -928,10 +935,12 @@
   items: [sources.list]
 
 - list: repository_directories
-  items: [/etc/apt/sources.list.d, /etc/yum.repos.d]
+  items: [/etc/apt/sources.list.d, /etc/yum.repos.d, /etc/apt]
 
 - macro: access_repositories
-  condition: (fd.filename in (repository_files) or fd.directory in (repository_directories))
+  condition: (fd.directory in (repository_directories) or
+              (fd.name pmatch (repository_directories) and
+               fd.filename in (repository_files)))
 
 - macro: modify_repositories
   condition: (evt.arg.newpath pmatch (repository_directories))
@@ -944,10 +953,11 @@
   condition: >
     ((open_write and access_repositories) or (modify and modify_repositories))
     and not package_mgmt_procs
+    and not package_mgmt_ancestor_procs
     and not exe_running_docker_save
     and not user_known_update_package_registry
   output: >
-    Repository files get updated (user=%user.name command=%proc.cmdline pcmdline=%proc.pcmdline file=%fd.name newpath=%evt.arg.newpath container_id=%container.id image=%container.image.repository)
+    Repository files get updated (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline pcmdline=%proc.pcmdline file=%fd.name newpath=%evt.arg.newpath container_id=%container.id image=%container.image.repository)
   priority:
     NOTICE
   tags: [filesystem, mitre_persistence]
@@ -968,7 +978,7 @@
     and not python_running_ms_oms
     and not user_known_write_below_binary_dir_activities
   output: >
-    File below a known binary directory opened for writing (user=%user.name
+    File below a known binary directory opened for writing (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline file=%fd.name parent=%proc.pname pcmdline=%proc.pcmdline gparent=%proc.aname[2] container_id=%container.id image=%container.image.repository)
   priority: ERROR
   tags: [filesystem, mitre_persistence]
@@ -1026,7 +1036,7 @@
     and not cloud_init_writing_ssh
     and not user_known_write_monitored_dir_conditions
   output: >
-    File below a monitored directory opened for writing (user=%user.name
+    File below a monitored directory opened for writing (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline file=%fd.name parent=%proc.pname pcmdline=%proc.pcmdline gparent=%proc.aname[2] container_id=%container.id image=%container.image.repository)
   priority: ERROR
   tags: [filesystem, mitre_persistence]
@@ -1049,7 +1059,7 @@
      not user_known_read_ssh_information_activities and
      not proc.name in (ssh_binaries))
   output: >
-    ssh-related file/directory read by non-ssh program (user=%user.name
+    ssh-related file/directory read by non-ssh program (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline file=%fd.name parent=%proc.pname pcmdline=%proc.pcmdline container_id=%container.id image=%container.image.repository)
   priority: ERROR
   tags: [filesystem, mitre_discovery]
@@ -1145,7 +1155,7 @@
 
 - macro: redis_writing_conf
   condition: >
-    (proc.name in (run-redis, redis-launcher.) and fd.name=/etc/redis.conf or fd.name startswith /etc/redis)
+    (proc.name in (run-redis, redis-launcher.) and (fd.name=/etc/redis.conf or fd.name startswith /etc/redis))
 
 - macro: openvpn_writing_conf
   condition: (proc.name in (openvpn,openvpn-entrypo) and fd.name startswith /etc/openvpn)
@@ -1173,7 +1183,10 @@
 
 - macro: calico_writing_conf
   condition: >
-    (proc.name = calico-node and fd.name startswith /etc/calico)
+    (((proc.name = calico-node) or
+      (container.image.repository=gcr.io/projectcalico-org/node and proc.name in (start_runit, cp)) or
+      (container.image.repository=gcr.io/projectcalico-org/cni and proc.name=sed))
+     and fd.name startswith /etc/calico)
 
 - macro: prometheus_conf_writing_conf
   condition: (proc.name=prometheus-conf and fd.name startswith /etc/prometheus/config_out)
@@ -1200,6 +1213,9 @@
        fd.name startswith /etc/ssh/ssh_monitor_config_ or
        fd.name startswith /etc/ssh/ssh_config_))
 
+- macro: multipath_writing_conf
+  condition: (proc.name = multipath and fd.name startswith /etc/multipath/)
+
 # Add conditions to this macro (probably in a separate file,
 # overwriting this macro) to allow for specific combinations of
 # programs writing below specific directories below
@@ -1320,11 +1336,12 @@
     and not automount_using_mtab
     and not mcafee_writing_cma_d
     and not avinetworks_supervisor_writing_ssh
+    and not multipath_writing_conf
 
 - rule: Write below etc
   desc: an attempt to write to any file below /etc
   condition: write_etc_common
-  output: "File below /etc opened for writing (user=%user.name command=%proc.cmdline parent=%proc.pname pcmdline=%proc.pcmdline file=%fd.name program=%proc.name gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4] container_id=%container.id image=%container.image.repository)"
+  output: "File below /etc opened for writing (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent=%proc.pname pcmdline=%proc.pcmdline file=%fd.name program=%proc.name gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4] container_id=%container.id image=%container.image.repository)"
   priority: ERROR
   tags: [filesystem, mitre_persistence]
 
@@ -1393,10 +1410,14 @@
 - macro: runc_writing_var_lib_docker
   condition: (proc.cmdline="runc:[1:CHILD] init" and evt.arg.filename startswith /var/lib/docker)
 
+- macro: mysqlsh_writing_state
+  condition: (proc.name=mysqlsh and fd.directory=/root/.mysqlsh)
+
 - rule: Write below root
   desc: an attempt to write to any file directly below / or /root
   condition: >
     root_dir and evt.dir = < and open_write
+    and proc_name_exists
     and not fd.name in (known_root_files)
     and not fd.directory pmatch (known_root_directories)
     and not exe_running_docker_save
@@ -1413,10 +1434,11 @@
     and not calico_writing_state
     and not rancher_writing_root
     and not runc_writing_exec_fifo
+    and not mysqlsh_writing_state
     and not known_root_conditions
     and not user_known_write_root_conditions
     and not user_known_write_below_root_activities
-  output: "File below / or /root opened for writing (user=%user.name command=%proc.cmdline parent=%proc.pname file=%fd.name program=%proc.name container_id=%container.id image=%container.image.repository)"
+  output: "File below / or /root opened for writing (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent=%proc.pname file=%fd.name program=%proc.name container_id=%container.id image=%container.image.repository)"
   priority: ERROR
   tags: [filesystem, mitre_persistence]
 
@@ -1433,7 +1455,7 @@
     at startup to load initial state, but not afterwards.
   condition: sensitive_files and open_read and server_procs and not proc_is_new and proc.name!="sshd" and not user_known_read_sensitive_files_activities
   output: >
-    Sensitive file opened for reading by trusted program after startup (user=%user.name
+    Sensitive file opened for reading by trusted program after startup (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline parent=%proc.pname file=%fd.name parent=%proc.pname gparent=%proc.aname[2] container_id=%container.id image=%container.image.repository)
   priority: WARNING
   tags: [filesystem, mitre_credential_access]
@@ -1475,7 +1497,9 @@
     and not proc.name in (user_mgmt_binaries, userexec_binaries, package_mgmt_binaries,
      cron_binaries, read_sensitive_file_binaries, shell_binaries, hids_binaries,
      vpn_binaries, mail_config_binaries, nomachine_binaries, sshkit_script_binaries,
-     in.proftpd, mandb, salt-minion, postgres_mgmt_binaries)
+     in.proftpd, mandb, salt-minion, postgres_mgmt_binaries,
+     google_oslogin_
+     )
     and not cmp_cp_by_passwd
     and not ansible_running_python
     and not proc.cmdline contains /usr/bin/mandb
@@ -1488,10 +1512,11 @@
     and not veritas_driver_script
     and not perl_running_centrifydc
     and not runuser_reading_pam
+    and not linux_bench_reading_etc_shadow
     and not user_known_read_sensitive_files_activities
     and not user_read_sensitive_file_containers
   output: >
-    Sensitive file opened for reading by non-trusted program (user=%user.name program=%proc.name
+    Sensitive file opened for reading by non-trusted program (user=%user.name user_loginuid=%user.loginuid program=%proc.name
     command=%proc.cmdline file=%fd.name parent=%proc.pname gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4] container_id=%container.id image=%container.image.repository)
   priority: WARNING
   tags: [filesystem, mitre_credential_access, mitre_discovery]
@@ -1554,7 +1579,7 @@
     and not postgres_running_wal_e
     and not user_known_db_spawned_processes
   output: >
-    Database-related program spawned process other than itself (user=%user.name
+    Database-related program spawned process other than itself (user=%user.name user_loginuid=%user.loginuid
     program=%proc.cmdline parent=%proc.pname container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [process, database, mitre_execution]
@@ -1566,7 +1591,7 @@
   desc: an attempt to modify any file below a set of binary directories.
   condition: bin_dir_rename and modify and not package_mgmt_procs and not exe_running_docker_save and not user_known_modify_bin_dir_activities
   output: >
-    File below known binary directory renamed/removed (user=%user.name command=%proc.cmdline
+    File below known binary directory renamed/removed (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline
     pcmdline=%proc.pcmdline operation=%evt.type file=%fd.name %evt.args container_id=%container.id image=%container.image.repository)
   priority: ERROR
   tags: [filesystem, mitre_persistence]
@@ -1578,7 +1603,7 @@
   desc: an attempt to create a directory below a set of binary directories.
   condition: mkdir and bin_dir_mkdir and not package_mgmt_procs and not user_known_mkdir_bin_dir_activities
   output: >
-    Directory below known binary directory created (user=%user.name
+    Directory below known binary directory created (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline directory=%evt.arg.path container_id=%container.id image=%container.image.repository)
   priority: ERROR
   tags: [filesystem, mitre_persistence]
@@ -1607,6 +1632,7 @@
     as a part of creating a container) by calling setns.
   condition: >
     evt.type=setns and evt.dir=<
+    and proc_name_exists
     and not (container.id=host and proc.name in (docker_binaries, k8s_binaries, lxd_binaries, nsenter))
     and not proc.name in (sysdigcloud_binaries, sysdig, calico, oci-umount, cilium-cni, network_plugin_binaries)
     and not proc.name in (user_known_change_thread_namespace_binaries)
@@ -1622,7 +1648,7 @@
     and not weaveworks_scope
     and not user_known_change_thread_namespace_activities
   output: >
-    Namespace change (setns) by unexpected program (user=%user.name command=%proc.cmdline
+    Namespace change (setns) by unexpected program (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline
     parent=%proc.pname %container.info container_id=%container.id image=%container.image.repository:%container.image.tag)
   priority: NOTICE
   tags: [process, mitre_privilege_escalation, mitre_lateral_movement]
@@ -1768,7 +1794,7 @@
     and not run_by_appdynamics
     and not user_shell_container_exclusions
   output: >
-    Shell spawned by untrusted binary (user=%user.name shell=%proc.name parent=%proc.pname
+    Shell spawned by untrusted binary (user=%user.name user_loginuid=%user.loginuid shell=%proc.name parent=%proc.pname
     cmdline=%proc.cmdline pcmdline=%proc.pcmdline gparent=%proc.aname[2] ggparent=%proc.aname[3]
     aname[4]=%proc.aname[4] aname[5]=%proc.aname[5] aname[6]=%proc.aname[6] aname[7]=%proc.aname[7] container_id=%container.id image=%container.image.repository)
   priority: DEBUG
@@ -1843,11 +1869,30 @@
 # These container images are allowed to run with --privileged
 - list: falco_privileged_images
   items: [
-    docker.io/sysdig/falco, docker.io/sysdig/sysdig,
-    gcr.io/google_containers/kube-proxy, docker.io/calico/node, quay.io/calico/node,
-    docker.io/rook/toolbox, docker.io/cloudnativelabs/kube-router, docker.io/mesosphere/mesos-slave,
-    docker.io/docker/ucp-agent, sematext_images, k8s.gcr.io/kube-proxy,
-    docker.io/falcosecurity/falco, sysdig/falco, sysdig/sysdig, falcosecurity/falco
+    docker.io/calico/node,
+    calico/node,
+    docker.io/cloudnativelabs/kube-router,
+    docker.io/docker/ucp-agent,
+    docker.io/falcosecurity/falco,
+    docker.io/mesosphere/mesos-slave,
+    docker.io/rook/toolbox,
+    docker.io/sysdig/falco,
+    docker.io/sysdig/sysdig,
+    falcosecurity/falco,
+    gcr.io/google_containers/kube-proxy,
+    gcr.io/google-containers/startup-script,
+    gcr.io/projectcalico-org/node,
+    gke.gcr.io/kube-proxy,
+    gke.gcr.io/gke-metadata-server,
+    gke.gcr.io/netd-amd64,
+    gcr.io/google-containers/prometheus-to-sd,
+    k8s.gcr.io/ip-masq-agent-amd64,
+    k8s.gcr.io/kube-proxy,
+    k8s.gcr.io/prometheus-to-sd,
+    quay.io/calico/node,
+    sysdig/falco,
+    sysdig/sysdig,
+    sematext_images
     ]
 
 - macro: falco_privileged_containers
@@ -1878,6 +1923,7 @@
 - list: falco_sensitive_mount_images
   items: [
     docker.io/sysdig/falco, docker.io/sysdig/sysdig, sysdig/falco, sysdig/sysdig,
+    docker.io/falcosecurity/falco, falcosecurity/falco,
     gcr.io/google_containers/hyperkube,
     gcr.io/google_containers/kube-proxy, docker.io/calico/node,
     docker.io/rook/toolbox, docker.io/cloudnativelabs/kube-router, docker.io/consul,
@@ -1890,11 +1936,20 @@
   condition: (user_trusted_containers or
               container.image.repository in (trusted_images) or
               container.image.repository in (falco_sensitive_mount_images) or
-              container.image.repository startswith quay.io/sysdig)
+              container.image.repository startswith quay.io/sysdig/)
 
 # These container images are allowed to run with hostnetwork=true
 - list: falco_hostnetwork_images
-  items: []
+  items: [
+    gcr.io/google-containers/prometheus-to-sd,
+    gcr.io/projectcalico-org/typha,
+    gcr.io/projectcalico-org/node,
+    gke.gcr.io/gke-metadata-server,
+    gke.gcr.io/kube-proxy,
+    gke.gcr.io/netd-amd64,
+    k8s.gcr.io/ip-masq-agent-amd64
+    k8s.gcr.io/prometheus-to-sd,
+    ]
 
 # Add conditions to this macro (probably in a separate file,
 # overwriting this macro) to specify additional containers that are
@@ -1912,7 +1967,7 @@
     and container.privileged=true
     and not falco_privileged_containers
     and not user_privileged_containers
-  output: Privileged container started (user=%user.name command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
+  output: Privileged container started (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
   priority: INFO
   tags: [container, cis, mitre_privilege_escalation, mitre_lateral_movement]
 
@@ -1956,7 +2011,7 @@
     and sensitive_mount
     and not falco_sensitive_mount_containers
     and not user_sensitive_mount_containers
-  output: Container with sensitive mount started (user=%user.name command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag mounts=%container.mounts)
+  output: Container with sensitive mount started (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag mounts=%container.mounts)
   priority: INFO
   tags: [container, cis, mitre_lateral_movement]
 
@@ -1976,7 +2031,7 @@
   desc: >
     Detect the initial process started by a container that is not in a list of allowed containers.
   condition: container_started and container and not allowed_containers
-  output: Container started and not in allowed list (user=%user.name command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
+  output: Container started and not in allowed list (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
   priority: WARNING
   tags: [container, mitre_lateral_movement]
 
@@ -1991,7 +2046,7 @@
 - rule: System user interactive
   desc: an attempt to run interactive commands by a system (i.e. non-login) user
   condition: spawned_process and system_users and interactive and not user_known_system_user_login
-  output: "System user ran an interactive command (user=%user.name command=%proc.cmdline container_id=%container.id image=%container.image.repository)"
+  output: "System user ran an interactive command (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline container_id=%container.id image=%container.image.repository)"
   priority: INFO
   tags: [users, mitre_remote_access_tools]
 
@@ -2008,7 +2063,7 @@
     and container_entrypoint
     and not user_expected_terminal_shell_in_container_conditions
   output: >
-    A shell was spawned in a container with an attached terminal (user=%user.name %container.info
+    A shell was spawned in a container with an attached terminal (user=%user.name user_loginuid=%user.loginuid %container.info
     shell=%proc.name parent=%proc.pname cmdline=%proc.cmdline terminal=%proc.tty container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [container, shell, mitre_execution]
@@ -2084,7 +2139,7 @@
     and not user_expected_system_procs_network_activity_conditions
   output: >
     Known system binary sent/received network traffic
-    (user=%user.name command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network, mitre_exfiltration]
 
@@ -2122,7 +2177,7 @@
     proc.env icontains HTTP_PROXY
   output: >
     Program run with disallowed HTTP_PROXY environment variable
-    (user=%user.name command=%proc.cmdline env=%proc.env parent=%proc.pname container_id=%container.id image=%container.image.repository)
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline env=%proc.env parent=%proc.pname container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [host, users]
 
@@ -2145,7 +2200,7 @@
      and interpreted_procs)
   output: >
     Interpreted program received/listened for network traffic
-    (user=%user.name command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network, mitre_exfiltration]
 
@@ -2156,7 +2211,7 @@
      and interpreted_procs)
   output: >
     Interpreted program performed outgoing network connection
-    (user=%user.name command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network, mitre_exfiltration]
 
@@ -2197,7 +2252,7 @@
   condition: (inbound_outbound) and do_unexpected_udp_check and fd.l4proto=udp and not expected_udp_traffic
   output: >
     Unexpected UDP Traffic Seen
-    (user=%user.name command=%proc.cmdline connection=%fd.name proto=%fd.l4proto evt=%evt.type %evt.args container_id=%container.id image=%container.image.repository)
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name proto=%fd.l4proto evt=%evt.type %evt.args container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [network, mitre_exfiltration]
 
@@ -2256,7 +2311,7 @@
     and not nrpe_becoming_nagios
     and not user_known_non_sudo_setuid_conditions
   output: >
-    Unexpected setuid call by non-sudo, non-root program (user=%user.name cur_uid=%user.uid parent=%proc.pname
+    Unexpected setuid call by non-sudo, non-root program (user=%user.name user_loginuid=%user.loginuid cur_uid=%user.uid parent=%proc.pname
     command=%proc.cmdline uid=%evt.arg.uid container_id=%container.id image=%container.image.repository)
   priority: NOTICE
   tags: [users, mitre_privilege_escalation]
@@ -2264,6 +2319,9 @@
 - macro: user_known_user_management_activities
   condition: (never_true)
 
+- macro: chage_list
+  condition: (proc.name=chage and (proc.cmdline contains "-l" or proc.cmdline contains "--list"))
+
 - rule: User mgmt binaries
   desc: >
     activity by any programs that can manage users, passwords, or permissions. sudo and su are excluded.
@@ -2282,10 +2340,11 @@
     not run_by_yum and
     not run_by_ms_oms and
     not run_by_google_accounts_daemon and
+    not chage_list and
     not user_known_user_management_activities
   output: >
     User management binary command run outside of container
-    (user=%user.name command=%proc.cmdline parent=%proc.pname gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4])
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent=%proc.pname gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4])
   priority: NOTICE
   tags: [host, users, mitre_persistence]
 
@@ -2309,7 +2368,7 @@
     and not fd.name in (allowed_dev_files)
     and not fd.name startswith /dev/tty
     and not user_known_create_files_below_dev_activities
-  output: "File created below /dev by untrusted program (user=%user.name command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)"
+  output: "File created below /dev by untrusted program (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)"
   priority: ERROR
   tags: [filesystem, mitre_persistence]
 
@@ -2427,7 +2486,7 @@
     and not package_mgmt_ancestor_procs
     and not user_known_package_manager_in_container
   output: >
-    Package management process launched in container (user=%user.name
+    Package management process launched in container (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority: ERROR
   tags: [process, mitre_persistence]
@@ -2441,7 +2500,7 @@
                               or proc.args contains "-c " or proc.args contains "--lua-exec"))
     )
   output: >
-    Netcat runs inside container that allows remote code execution (user=%user.name
+    Netcat runs inside container that allows remote code execution (user=%user.name user_loginuid=%user.loginuid
     command=%proc.cmdline container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority: WARNING
   tags: [network, process, mitre_execution]
@@ -2454,7 +2513,7 @@
   condition: >
     spawned_process and container and network_tool_procs and not user_known_network_tool_activities
   output: >
-    Network tool launched in container (user=%user.name command=%proc.cmdline parent_process=%proc.pname
+    Network tool launched in container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent_process=%proc.pname
     container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority: NOTICE
   tags: [network, process, mitre_discovery, mitre_exfiltration]
@@ -2474,7 +2533,7 @@
     network_tool_procs and
     not user_known_network_tool_activities
   output: >
-    Network tool launched on host (user=%user.name command=%proc.cmdline parent_process=%proc.pname)
+    Network tool launched on host (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent_process=%proc.pname)
   priority: NOTICE
   tags: [network, process, mitre_discovery, mitre_exfiltration]
 
@@ -2510,7 +2569,7 @@
     )
   output: >
     Grep private keys or passwords activities found
-    (user=%user.name command=%proc.cmdline container_id=%container.id container_name=%container.name
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline container_id=%container.id container_name=%container.name
     image=%container.image.repository:%container.image.tag)
   priority:
     WARNING
@@ -2544,7 +2603,7 @@
     not trusted_logging_images and
     not allowed_clear_log_files
   output: >
-    Log files were tampered (user=%user.name command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
+    Log files were tampered (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
   priority:
     WARNING
   tags: [file, mitre_defense_evasion]
@@ -2562,13 +2621,12 @@
   desc: Detect process running to clear bulk data from disk
   condition: spawned_process and clear_data_procs and not user_known_remove_data_activities
   output: >
-    Bulk data has been removed from disk (user=%user.name command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
+    Bulk data has been removed from disk (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
   priority:
     WARNING
   tags: [process, mitre_persistence]
 
-- rule: Delete or rename shell history
-  desc: Detect shell history deletion
+- macro: modify_shell_history
   condition: >
     (modify and (
       evt.arg.name contains "bash_history" or
@@ -2582,14 +2640,27 @@
       evt.arg.path contains "bash_history" or
       evt.arg.path contains "zsh_history" or
       evt.arg.path contains "fish_read_history" or
-      evt.arg.path endswith "fish_history")) or
+      evt.arg.path endswith "fish_history"))
+
+- macro: truncate_shell_history
+  condition: >
     (open_write and (
       fd.name contains "bash_history" or
       fd.name contains "zsh_history" or
       fd.name contains "fish_read_history" or
       fd.name endswith "fish_history") and evt.arg.flags contains "O_TRUNC")
+
+- macro: var_lib_docker_filepath
+  condition: (evt.arg.name startswith /var/lib/docker or fd.name startswith /var/lib/docker)
+
+- rule: Delete or rename shell history
+  desc: Detect shell history deletion
+  condition: >
+    (modify_shell_history or truncate_shell_history) and
+       not var_lib_docker_filepath and
+       not proc.name in (docker_binaries)
   output: >
-    Shell history had been deleted or renamed (user=%user.name type=%evt.type command=%proc.cmdline fd.name=%fd.name name=%evt.arg.name path=%evt.arg.path oldpath=%evt.arg.oldpath %container.info)
+    Shell history had been deleted or renamed (user=%user.name user_loginuid=%user.loginuid type=%evt.type command=%proc.cmdline fd.name=%fd.name name=%evt.arg.name path=%evt.arg.path oldpath=%evt.arg.oldpath %container.info)
   priority:
     WARNING
   tags: [process, mitre_defense_evasion]
@@ -2602,7 +2673,7 @@
     ((spawned_process and proc.name in (shred, rm, mv) and proc.args contains "bash_history") or
      (open_write and fd.name contains "bash_history" and evt.arg.flags contains "O_TRUNC"))
   output: >
-    Shell history had been deleted or renamed (user=%user.name type=%evt.type command=%proc.cmdline fd.name=%fd.name name=%evt.arg.name path=%evt.arg.path oldpath=%evt.arg.oldpath %container.info)
+    Shell history had been deleted or renamed (user=%user.name user_loginuid=%user.loginuid type=%evt.type command=%proc.cmdline fd.name=%fd.name name=%evt.arg.name path=%evt.arg.path oldpath=%evt.arg.oldpath %container.info)
   priority:
     WARNING
   tags: [process, mitre_defense_evasion]
@@ -2630,7 +2701,7 @@
     and not exe_running_docker_save
     and not user_known_set_setuid_or_setgid_bit_conditions
   output: >
-    Setuid or setgid bit is set via chmod (fd=%evt.arg.fd filename=%evt.arg.filename mode=%evt.arg.mode user=%user.name process=%proc.name
+    Setuid or setgid bit is set via chmod (fd=%evt.arg.fd filename=%evt.arg.filename mode=%evt.arg.mode user=%user.name user_loginuid=%user.loginuid process=%proc.name
     command=%proc.cmdline container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority:
     NOTICE
@@ -2655,7 +2726,7 @@
     consider_hidden_file_creation and
     not user_known_create_hidden_file_activities
   output: >
-    Hidden file or directory created (user=%user.name command=%proc.cmdline
+    Hidden file or directory created (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline
     file=%fd.name newpath=%evt.arg.newpath container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority:
     NOTICE
@@ -2667,12 +2738,20 @@
 - macro: remote_file_copy_procs
   condition: (proc.name in (remote_file_copy_binaries))
 
+# Users should overwrite this macro to specify conditions under which a
+# Custom condition for use of remote file copy tool in container
+- macro: user_known_remote_file_copy_activities
+  condition: (never_true)
+
 - rule: Launch Remote File Copy Tools in Container
   desc: Detect remote file copy tools launched in container
   condition: >
-    spawned_process and container and remote_file_copy_procs
+    spawned_process
+    and container
+    and remote_file_copy_procs
+    and not user_known_remote_file_copy_activities
   output: >
-    Remote file copy tool launched in container (user=%user.name command=%proc.cmdline parent_process=%proc.pname
+    Remote file copy tool launched in container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent_process=%proc.pname
     container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority: NOTICE
   tags: [network, process, mitre_lateral_movement, mitre_exfiltration]
@@ -2683,7 +2762,7 @@
     create_symlink and
     (evt.arg.target in (sensitive_file_names) or evt.arg.target in (sensitive_directory_names))
   output: >
-    Symlinks created over senstivie files (user=%user.name command=%proc.cmdline target=%evt.arg.target linkpath=%evt.arg.linkpath parent_process=%proc.pname)
+    Symlinks created over senstivie files (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline target=%evt.arg.target linkpath=%evt.arg.linkpath parent_process=%proc.pname)
   priority: NOTICE
   tags: [file, mitre_exfiltration]
 
@@ -2793,12 +2872,22 @@
 - list: k8s_client_binaries
   items: [docker, kubectl, crictl]
 
+- list: user_known_k8s_ns_kube_system_images
+  items: [
+      k8s.gcr.io/fluentd-gcp-scaler,
+      k8s.gcr.io/node-problem-detector/node-problem-detector
+  ]
+
+- list: user_known_k8s_images
+  items: [
+      mcr.microsoft.com/aks/hcp/hcp-tunnel-front
+  ]
+
 # Whitelist for known docker client binaries run inside container
 # - k8s.gcr.io/fluentd-gcp-scaler in GCP/GKE
 - macro: user_known_k8s_client_container
   condition: >
-    (k8s.ns.name="kube-system" and container.image.repository=k8s.gcr.io/fluentd-gcp-scaler) or
-    container.image.repository=mcr.microsoft.com/aks/hcp/hcp-tunnel-front
+    (k8s.ns.name="kube-system" and container.image.repository in (user_known_k8s_ns_kube_system_images)) or container.image.repository in (user_known_k8s_images)
 
 - macro: user_known_k8s_client_container_parens
   condition: (user_known_k8s_client_container)
@@ -2806,24 +2895,23 @@
 - rule: The docker client is executed in a container
   desc: Detect a k8s client tool executed inside a container
   condition: spawned_process and container and not user_known_k8s_client_container_parens and proc.name in (k8s_client_binaries)
-  output: "Docker or kubernetes client executed in container (user=%user.name %container.info parent=%proc.pname cmdline=%proc.cmdline image=%container.image.repository:%container.image.tag)"
+  output: "Docker or kubernetes client executed in container (user=%user.name user_loginuid=%user.loginuid %container.info parent=%proc.pname cmdline=%proc.cmdline image=%container.image.repository:%container.image.tag)"
   priority: WARNING
   tags: [container, mitre_execution]
 
 
-# This rule is not enabled by default, as there are legitimate use
-# cases for raw packet. If you want to enable it, modify the
-# following macro.
+# This rule is enabled by default. 
+# If you want to disable it, modify the following macro.
 - macro: consider_packet_socket_communication
-  condition: (never_true)
+  condition: (always_true)
 
 - list: user_known_packet_socket_binaries
   items: []
 
 - rule: Packet socket created in container
-  desc: Detect new packet socket at the device driver (OSI Layer 2) level in a container. Packet socket could be used to do ARP Spoofing by attacker.
+  desc: Detect new packet socket at the device driver (OSI Layer 2) level in a container. Packet socket could be used for ARP Spoofing and privilege escalation(CVE-2020-14386) by attacker.
   condition: evt.type=socket and evt.arg[0]=AF_PACKET and consider_packet_socket_communication and container and not proc.name in (user_known_packet_socket_binaries)
-  output: Packet socket was created in a container (user=%user.name command=%proc.cmdline socket_info=%evt.args container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
+  output: Packet socket was created in a container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline socket_info=%evt.args container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
   priority: NOTICE
   tags: [network, mitre_discovery]
 
@@ -2862,7 +2950,7 @@
     k8s.ns.name in (namespace_scope_network_only_subnet)
   output: >
     Network connection outside local subnet
-    (command=%proc.cmdline connection=%fd.name user=%user.name container_id=%container.id
+    (command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id
      image=%container.image.repository namespace=%k8s.ns.name
      fd.rip.name=%fd.rip.name fd.lip.name=%fd.lip.name fd.cip.name=%fd.cip.name fd.sip.name=%fd.sip.name)
   priority: WARNING
@@ -2902,7 +2990,7 @@
     not fd.sport in (authorized_server_port)
   output: >
     Network connection outside authorized port and binary
-    (command=%proc.cmdline connection=%fd.name user=%user.name container_id=%container.id
+    (command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id
     image=%container.image.repository)
   priority: WARNING
   tags: [network]
@@ -2914,7 +3002,7 @@
   desc: Detect redirecting stdout/stdin to network connection in container (potential reverse shell).
   condition: evt.type=dup and evt.dir=> and container and fd.num in (0, 1, 2) and fd.type in ("ipv4", "ipv6") and not user_known_stand_streams_redirect_activities
   output: >
-    Redirect stdout/stdin to network connection (user=%user.name %container.info process=%proc.name parent=%proc.pname cmdline=%proc.cmdline terminal=%proc.tty container_id=%container.id image=%container.image.repository fd.name=%fd.name fd.num=%fd.num fd.type=%fd.type fd.sip=%fd.sip)
+    Redirect stdout/stdin to network connection (user=%user.name user_loginuid=%user.loginuid %container.info process=%proc.name parent=%proc.pname cmdline=%proc.cmdline terminal=%proc.tty container_id=%container.id image=%container.image.repository fd.name=%fd.name fd.num=%fd.num fd.type=%fd.type fd.sip=%fd.sip)
   priority: WARNING
 
 # The two Container Drift rules below will fire when a new executable is created in a container.
@@ -2943,7 +3031,7 @@
     ((evt.arg.mode contains "S_IXUSR") or
     (evt.arg.mode contains "S_IXGRP") or
     (evt.arg.mode contains "S_IXOTH"))
-  output: Drift detected (chmod), new executable created in a container (user=%user.name command=%proc.cmdline filename=%evt.arg.filename name=%evt.arg.name mode=%evt.arg.mode event=%evt.type)
+  output: Drift detected (chmod), new executable created in a container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline filename=%evt.arg.filename name=%evt.arg.name mode=%evt.arg.mode event=%evt.type)
   priority: ERROR
 
 # ****************************************************************************
@@ -2959,9 +3047,28 @@
     not runc_writing_var_lib_docker and
     not user_known_container_drift_activities and
     evt.rawres>=0
-  output: Drift detected (open+create), new executable created in a container (user=%user.name command=%proc.cmdline filename=%evt.arg.filename name=%evt.arg.name mode=%evt.arg.mode event=%evt.type)
+  output: Drift detected (open+create), new executable created in a container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline filename=%evt.arg.filename name=%evt.arg.name mode=%evt.arg.mode event=%evt.type)
   priority: ERROR
 
+- list: c2_server_ip_list
+  items: []
+
+- rule: Outbound Connection to C2 Servers
+  desc: Detect outbound connection to command & control servers
+  condition: outbound and fd.sip in (c2_server_ip_list)
+  output: Outbound connection to C2 server (command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
+  priority: WARNING
+  tags: [network]
+
+- list: white_listed_modules
+  items: []
+    
+- rule: Linux Kernel Module Injection Detected
+  desc: Detect kernel module was injected (from container).
+  condition: spawned_process and container and proc.name=insmod and not proc.args in (white_listed_modules)
+  output: Linux Kernel Module injection using insmod detected (user=%user.name user_loginuid=%user.loginuid parent_process=%proc.pname module=%proc.args)
+  priority: WARNING
+  tags: [process]
 
 # Application rules have moved to application_rules.yaml. Please look
 # there if you want to enable them by adding to

rules/k8s_audit_rules.yaml

@@ -48,6 +48,9 @@
     "minikube", "minikube-user", "kubelet", "kops", "admin", "kube", "kube-proxy", "kube-apiserver-healthcheck",
     "kubernetes-admin",
     vertical_pod_autoscaler_users,
+    cluster-autoscaler,
+    "system:addon-manager",
+    "cloud-controller-manager"
     ]
 
 - rule: Disallowed K8s User
@@ -242,20 +245,48 @@
   source: k8s_audit
   tags: [k8s]
 
+# Only defined for backwards compatibility. Use the more specific
+# user_allowed_kube_namespace_image_list instead.
 - list: user_trusted_image_list
   items: []
 
-- list: k8s_image_list
-  items: [k8s.gcr.io/kube-apiserver, kope/kube-apiserver-healthcheck]
+- list: user_allowed_kube_namespace_image_list
+  items: [user_trusted_image_list]
 
-- macro: trusted_pod
-  condition: (ka.req.pod.containers.image.repository in (user_trusted_image_list) or
-              ka.req.pod.containers.image.repository in (k8s_image_list))
+# Only defined for backwards compatibility. Use the more specific
+# allowed_kube_namespace_image_list instead.
+- list: k8s_image_list
+  items: []
+
+- list: allowed_kube_namespace_image_list
+  items: [
+    gcr.io/google-containers/prometheus-to-sd,
+    gcr.io/projectcalico-org/node,
+    gke.gcr.io/addon-resizer,
+    gke.gcr.io/heapster,
+    gke.gcr.io/gke-metadata-server,
+    k8s.gcr.io/ip-masq-agent-amd64,
+    k8s.gcr.io/kube-apiserver,
+    gke.gcr.io/kube-proxy,
+    gke.gcr.io/netd-amd64,
+    k8s.gcr.io/addon-resizer
+    k8s.gcr.io/prometheus-to-sd,
+    k8s.gcr.io/k8s-dns-dnsmasq-nanny-amd64,
+    k8s.gcr.io/k8s-dns-kube-dns-amd64,
+    k8s.gcr.io/k8s-dns-sidecar-amd64,
+    k8s.gcr.io/metrics-server-amd64,
+    kope/kube-apiserver-healthcheck,
+    k8s_image_list
+    ]
+
+- macro: allowed_kube_namespace_pods
+  condition: (ka.req.pod.containers.image.repository in (user_allowed_kube_namespace_image_list) or
+              ka.req.pod.containers.image.repository in (allowed_kube_namespace_image_list))
 
 # Detect any new pod created in the kube-system namespace
 - rule: Pod Created in Kube Namespace
   desc: Detect any attempt to create a pod in the kube-system or kube-public namespaces
-  condition: kevt and pod and kcreate and ka.target.namespace in (kube-system, kube-public) and not trusted_pod
+  condition: kevt and pod and kcreate and ka.target.namespace in (kube-system, kube-public) and not allowed_kube_namespace_pods
   output: Pod created in kube namespace (user=%ka.user.name pod=%ka.resp.name ns=%ka.target.namespace images=%ka.req.pod.containers.image)
   priority: WARNING
   source: k8s_audit
@@ -281,7 +312,8 @@
 # normal operation.
 - rule: System ClusterRole Modified/Deleted
   desc: Detect any attempt to modify/delete a ClusterRole/Role starting with system
-  condition: kevt and (role or clusterrole) and (kmodify or kdelete) and (ka.target.name startswith "system:") and ka.target.name!="system:coredns"
+  condition: kevt and (role or clusterrole) and (kmodify or kdelete) and (ka.target.name startswith "system:") and
+             not ka.target.name in (system:coredns, system:managed-certificate-controller)
   output: System ClusterRole/Role modified or deleted (user=%ka.user.name role=%ka.target.name ns=%ka.target.namespace action=%ka.verb)
   priority: WARNING
   source: k8s_audit
@@ -505,7 +537,7 @@
   condition: >
     kevt 
     and non_system_user 
-    and ka.user.name in (admin_k8s_users) 
+    and ka.user.name in (full_admin_k8s_users)
     and not allowed_full_admin_users
   output: K8s Operation performed by full admin user (user=%ka.user.name target=%ka.target.name/%ka.target.resource verb=%ka.verb uri=%ka.uri resp=%ka.response.code)
   priority: WARNING

scripts/cleanup

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+usage() {
+    echo "usage: $0 -p 0987654321 -r <deb-dev|rpm-dev|bin-dev>"
+    exit 1
+}
+
+user=poiana
+
+# Get the versions to delete.
+#
+# $1: repository to lookup
+# $2: number of versions to skip.
+get_versions() {
+    # The API endpoint returns the Falco package versions sort by most recent.
+    IFS=$'\n' read -r -d '' -a all < <(curl -s --header "Content-Type: application/json" "https://api.bintray.com/packages/falcosecurity/$1/falco" | jq -r '.versions | .[]' | tail -n "+$2")
+}
+
+# Remove all the versions (${all[@]} array).
+#
+# $1: repository containing the versions.
+rem_versions() {
+    for i in "${!all[@]}";
+    do
+        JFROG_CLI_LOG_LEVEL=DEBUG jfrog bt vd --quiet --user "${user}" --key "${pass}" "falcosecurity/$1/falco/${all[$i]}"
+    done
+}
+
+while getopts ":p::r:" opt; do
+    case "${opt}" in
+        p )
+          pass=${OPTARG}
+          ;;
+        r )
+          repo="${OPTARG}"
+          [[ "${repo}" == "deb-dev" || "${repo}" == "rpm-dev" || "${repo}" == "bin-dev" ]] || usage
+          ;;
+        : )
+          echo "invalid option: ${OPTARG} requires an argument" 1>&2
+          exit 1
+          ;;
+        \?)
+          echo "invalid option: ${OPTARG}" 1>&2
+          exit 1
+          ;;
+    esac
+done
+shift $((OPTIND-1))
+
+if [ -z "${pass}" ] || [ -z "${repo}" ]; then
+    usage
+fi
+
+skip=51
+if [[ "${repo}" == "bin-dev" ]]; then
+    skip=11
+fi
+
+get_versions "${repo}" ${skip}
+echo "number of versions to delete: ${#all[@]}"
+rem_versions "${repo}"

scripts/falco-driver-loader

@@ -143,33 +143,41 @@ load_kernel_module_compile() {
 	# skip dkms on UEK hosts because it will always fail
 	if [[ $(uname -r) == *uek* ]]; then
 		echo "* Skipping dkms install for UEK host"
-	else
-		if hash dkms &>/dev/null; then
-				echo "* Trying to dkms install ${DRIVER_NAME} module"
-			if dkms install -m "${DRIVER_NAME}" -v "${DRIVER_VERSION}" -k "${KERNEL_RELEASE}" 2>/dev/null; then
-				echo "* ${DRIVER_NAME} module installed in dkms, trying to insmod"				
-				if insmod "/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/${KERNEL_RELEASE}/${ARCH}/module/${DRIVER_NAME}.ko" > /dev/null 2>&1; then
-					echo "* Success: ${DRIVER_NAME} module found and loaded in dkms"
-					exit 0
-				elif insmod "/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/${KERNEL_RELEASE}/${ARCH}/module/${DRIVER_NAME}.ko.xz" > /dev/null 2>&1; then
-					echo "* Success: ${DRIVER_NAME} module found and loaded in dkms (xz)"
-					exit 0
-				else
-					echo "* Unable to insmod ${DRIVER_NAME} module"
-				fi
+		return
+	fi
+
+	if ! hash dkms &>/dev/null; then
+		echo "* Skipping dkms install (dkms not found)"
+		return
+	fi
+
+	# try to compile using all the available gcc versions
+	for CURRENT_GCC in $(which gcc) $(ls "$(dirname "$(which gcc)")"/gcc-* | grep 'gcc-[0-9]\+' | sort -r); do
+		echo "* Trying to dkms install ${DRIVER_NAME} module with GCC ${CURRENT_GCC}"
+		echo "#!/usr/bin/env bash" > /tmp/falco-dkms-make
+		echo "make CC=${CURRENT_GCC} \$@" >> /tmp/falco-dkms-make
+		chmod +x /tmp/falco-dkms-make
+		if dkms install --directive="MAKE='/tmp/falco-dkms-make'" -m "${DRIVER_NAME}" -v "${DRIVER_VERSION}" -k "${KERNEL_RELEASE}" 2>/dev/null; then
+			echo "* ${DRIVER_NAME} module installed in dkms, trying to insmod"				
+			if insmod "/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/${KERNEL_RELEASE}/${ARCH}/module/${DRIVER_NAME}.ko" > /dev/null 2>&1; then
+				echo "* Success: ${DRIVER_NAME} module found and loaded in dkms"
+				exit 0
+			elif insmod "/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/${KERNEL_RELEASE}/${ARCH}/module/${DRIVER_NAME}.ko.xz" > /dev/null 2>&1; then
+				echo "* Success: ${DRIVER_NAME} module found and loaded in dkms (xz)"
+				exit 0
 			else
-				DKMS_LOG="/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/build/make.log"
-				if [ -f "${DKMS_LOG}" ]; then
-					echo "* Running dkms build failed, dumping ${DKMS_LOG}"
-					cat "${DKMS_LOG}"
-				else
-					echo "* Running dkms build failed, couldn't find ${DKMS_LOG}"
-				fi
+				echo "* Unable to insmod ${DRIVER_NAME} module"
 			fi
 		else
-			echo "* Skipping dkms install (dkms not found)"
+			DKMS_LOG="/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/build/make.log"
+			if [ -f "${DKMS_LOG}" ]; then
+				echo "* Running dkms build failed, dumping ${DKMS_LOG} (with GCC ${CURRENT_GCC})"
+				cat "${DKMS_LOG}"
+			else
+				echo "* Running dkms build failed, couldn't find ${DKMS_LOG} (with GCC ${CURRENT_GCC})"
+			fi
 		fi
-	fi
+	done
 }
 
 load_kernel_module_download() {
@@ -212,7 +220,7 @@ load_kernel_module() {
 	rmmod "${DRIVER_NAME}" 2>/dev/null
 	WAIT_TIME=0
 	KMOD_NAME=$(echo "${DRIVER_NAME}" | tr "-" "_")
-	while lsmod | grep "${KMOD_NAME}" > /dev/null 2>&1 && [ $WAIT_TIME -lt "${MAX_RMMOD_WAIT}" ]; do
+	while lsmod | cut -d' ' -f1 | grep -qx "${KMOD_NAME}" && [ $WAIT_TIME -lt "${MAX_RMMOD_WAIT}" ]; do 
 		if rmmod "${DRIVER_NAME}" 2>/dev/null; then
 			echo "* Unloading ${DRIVER_NAME} module succeeded after ${WAIT_TIME}s"
 			break
@@ -224,7 +232,7 @@ load_kernel_module() {
 		sleep 1
 	done
 
-	if lsmod | grep "${KMOD_NAME}" > /dev/null 2>&1; then
+	if lsmod | cut -d' ' -f1 | grep -qx "${KMOD_NAME}" > /dev/null 2>&1; then
 		echo "* ${DRIVER_NAME} module seems to still be loaded, hoping the best"
 		exit 0
 	fi

test/confs/program_output.yaml

@@ -41,4 +41,4 @@ stdout_output:
 
 program_output:
   enabled: true
-  program: cat > /tmp/falco_outputs/program_output.txt
+  program: cat >> /tmp/falco_outputs/program_output.txt

test/confs/stdout_output.yaml

@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2020 The Falco 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.
+#
+
+# File containing Falco rules, loaded at startup.
+rules_file: /etc/falco_rules.yaml
+
+# Whether to output events in json or text
+json_output: false
+
+# Send information logs to stderr and/or syslog Note these are *not* security
+# notification logs! These are just Falco lifecycle (and possibly error) logs.
+log_stderr: false
+log_syslog: false
+
+# Where security notifications should go.
+# Multiple outputs can be enabled.
+
+syslog_output:
+  enabled: false
+
+file_output:
+  enabled: false
+
+stdout_output:
+  enabled: true
+
+program_output:
+  enabled: false

test/falco_test.py

@@ -1,4 +1,4 @@
- #!/usr/bin/env python
+#!/usr/bin/env python
 #
 # Copyright (C) 2019 The Falco Authors.
 #
@@ -31,6 +31,7 @@ from avocado.utils import process
 from watchdog.observers import Observer
 from watchdog.events import PatternMatchingEventHandler
 
+
 class FalcoTest(Test):
 
     def setUp(self):
@@ -49,17 +50,20 @@ class FalcoTest(Test):
         self.stdout_is = self.params.get('stdout_is', '*', default='')
         self.stderr_is = self.params.get('stderr_is', '*', default='')
 
-        self.stdout_contains = self.params.get('stdout_contains', '*', default='')
+        self.stdout_contains = self.params.get(
+            'stdout_contains', '*', default='')
 
         if not isinstance(self.stdout_contains, list):
             self.stdout_contains = [self.stdout_contains]
 
-        self.stderr_contains = self.params.get('stderr_contains', '*', default='')
+        self.stderr_contains = self.params.get(
+            'stderr_contains', '*', default='')
 
         if not isinstance(self.stderr_contains, list):
             self.stderr_contains = [self.stderr_contains]
 
-        self.stdout_not_contains = self.params.get('stdout_not_contains', '*', default='')
+        self.stdout_not_contains = self.params.get(
+            'stdout_not_contains', '*', default='')
 
         if not isinstance(self.stdout_not_contains, list):
             if self.stdout_not_contains == '':
@@ -67,7 +71,8 @@ class FalcoTest(Test):
             else:
                 self.stdout_not_contains = [self.stdout_not_contains]
 
-        self.stderr_not_contains = self.params.get('stderr_not_contains', '*', default='')
+        self.stderr_not_contains = self.params.get(
+            'stderr_not_contains', '*', default='')
 
         if not isinstance(self.stderr_not_contains, list):
             if self.stderr_not_contains == '':
@@ -83,15 +88,18 @@ class FalcoTest(Test):
             self.trace_file = os.path.join(build_dir, "test", self.trace_file)
 
         self.json_output = self.params.get('json_output', '*', default=False)
-        self.json_include_output_property = self.params.get('json_include_output_property', '*', default=True)
+        self.json_include_output_property = self.params.get(
+            'json_include_output_property', '*', default=True)
         self.all_events = self.params.get('all_events', '*', default=False)
         self.priority = self.params.get('priority', '*', default='debug')
-        self.rules_file = self.params.get('rules_file', '*', default=os.path.join(self.basedir, '../rules/falco_rules.yaml'))
+        self.rules_file = self.params.get(
+            'rules_file', '*', default=os.path.join(self.basedir, '../rules/falco_rules.yaml'))
 
         if not isinstance(self.rules_file, list):
             self.rules_file = [self.rules_file]
 
-        self.validate_rules_file = self.params.get('validate_rules_file', '*', default=False)
+        self.validate_rules_file = self.params.get(
+            'validate_rules_file', '*', default=False)
 
         if self.validate_rules_file == False:
             self.validate_rules_file = []
@@ -118,13 +126,15 @@ class FalcoTest(Test):
                 file = os.path.join(self.basedir, file)
             self.rules_args = self.rules_args + "-r " + file + " "
 
-        self.conf_file = self.params.get('conf_file', '*', default=os.path.join(self.basedir, '../falco.yaml'))
+        self.conf_file = self.params.get(
+            'conf_file', '*', default=os.path.join(self.basedir, '../falco.yaml'))
         if not os.path.isabs(self.conf_file):
             self.conf_file = os.path.join(self.basedir, self.conf_file)
 
         self.run_duration = self.params.get('run_duration', '*', default='')
 
-        self.disabled_rules = self.params.get('disabled_rules', '*', default='')
+        self.disabled_rules = self.params.get(
+            'disabled_rules', '*', default='')
 
         if self.disabled_rules == '':
             self.disabled_rules = []
@@ -137,7 +147,8 @@ class FalcoTest(Test):
         for rule in self.disabled_rules:
             self.disabled_args = self.disabled_args + "-D " + rule + " "
 
-        self.detect_counts = self.params.get('detect_counts', '*', default=False)
+        self.detect_counts = self.params.get(
+            'detect_counts', '*', default=False)
         if self.detect_counts == False:
             self.detect_counts = {}
         else:
@@ -147,7 +158,8 @@ class FalcoTest(Test):
                     detect_counts[key] = value
             self.detect_counts = detect_counts
 
-        self.rules_warning = self.params.get('rules_warning', '*', default=False)
+        self.rules_warning = self.params.get(
+            'rules_warning', '*', default=False)
         if self.rules_warning == False:
             self.rules_warning = set()
         else:
@@ -172,9 +184,11 @@ class FalcoTest(Test):
 
         self.package = self.params.get('package', '*', default='None')
 
-        self.addl_docker_run_args = self.params.get('addl_docker_run_args', '*', default='')
+        self.addl_docker_run_args = self.params.get(
+            'addl_docker_run_args', '*', default='')
 
-        self.copy_local_driver = self.params.get('copy_local_driver', '*', default=False)
+        self.copy_local_driver = self.params.get(
+            'copy_local_driver', '*', default=False)
 
         # Used by possibly_copy_local_driver as well as docker run
         self.module_dir = os.path.expanduser("~/.falco")
@@ -197,9 +211,33 @@ class FalcoTest(Test):
                         os.makedirs(filedir)
             self.outputs = outputs
 
+        self.output_strictly_contains = self.params.get(
+            'output_strictly_contains', '*', default='')
+
+        if self.output_strictly_contains == '':
+            self.output_strictly_contains = {}
+        else:
+            output_strictly_contains = []
+            for item in self.output_strictly_contains:
+                for key, value in list(item.items()):
+                    output = {}
+                    output['actual'] = key
+                    output['expected'] = value
+                    output_strictly_contains.append(output)
+                    if not output['actual'] == 'stdout':
+                        # Clean up file from previous tests, if any
+                        if os.path.exists(output['actual']):
+                            os.remove(output['actual'])
+                        # Create the parent directory for the file if it doesn't exist.
+                        filedir = os.path.dirname(output['actual'])
+                        if not os.path.isdir(filedir):
+                            os.makedirs(filedir)
+            self.output_strictly_contains = output_strictly_contains
+
         self.grpcurl_res = None
         self.grpc_observer = None
-        self.grpc_address = self.params.get('address', 'grpc/*', default='/var/run/falco.sock')
+        self.grpc_address = self.params.get(
+            'address', 'grpc/*', default='/var/run/falco.sock')
         if self.grpc_address.startswith("unix://"):
             self.is_grpc_using_unix_socket = True
             self.grpc_address = self.grpc_address[len("unix://"):]
@@ -211,21 +249,22 @@ class FalcoTest(Test):
         self.grpc_results = self.params.get('results', 'grpc/*', default='')
         if self.grpc_results == '':
             self.grpc_results = []
-        else: 
+        else:
             if type(self.grpc_results) == str:
                 self.grpc_results = [self.grpc_results]
 
         self.disable_tags = self.params.get('disable_tags', '*', default='')
 
         if self.disable_tags == '':
-            self.disable_tags=[]
+            self.disable_tags = []
 
         self.run_tags = self.params.get('run_tags', '*', default='')
 
         if self.run_tags == '':
-            self.run_tags=[]
+            self.run_tags = []
 
-        self.time_iso_8601 = self.params.get('time_iso_8601', '*', default=False)
+        self.time_iso_8601 = self.params.get(
+            'time_iso_8601', '*', default=False)
 
     def tearDown(self):
         if self.package != 'None':
@@ -244,7 +283,8 @@ class FalcoTest(Test):
         self.log.debug("Actual warning rules: {}".format(found_warning))
 
         if found_warning != self.rules_warning:
-            self.fail("Expected rules with warnings {} does not match actual rules with warnings {}".format(self.rules_warning, found_warning))
+            self.fail("Expected rules with warnings {} does not match actual rules with warnings {}".format(
+                self.rules_warning, found_warning))
 
     def check_rules_events(self, res):
 
@@ -255,50 +295,60 @@ class FalcoTest(Test):
             events = set(match.group(2).split(","))
             found_events[rule] = events
 
-        self.log.debug("Expected events for rules: {}".format(self.rules_events))
+        self.log.debug(
+            "Expected events for rules: {}".format(self.rules_events))
         self.log.debug("Actual events for rules: {}".format(found_events))
 
         for rule in list(found_events.keys()):
             if found_events.get(rule) != self.rules_events.get(rule):
-                self.fail("rule {}: expected events {} differs from actual events {}".format(rule, self.rules_events.get(rule), found_events.get(rule)))
+                self.fail("rule {}: expected events {} differs from actual events {}".format(
+                    rule, self.rules_events.get(rule), found_events.get(rule)))
 
     def check_detections(self, res):
         # Get the number of events detected.
         match = re.search('Events detected: (\d+)', res.stdout.decode("utf-8"))
         if match is None:
-            self.fail("Could not find a line 'Events detected: <count>' in falco output")
+            self.fail(
+                "Could not find a line 'Events detected: <count>' in falco output")
 
         events_detected = int(match.group(1))
 
         if not self.should_detect and events_detected > 0:
-            self.fail("Detected {} events when should have detected none".format(events_detected))
+            self.fail("Detected {} events when should have detected none".format(
+                events_detected))
 
         if self.should_detect:
             if events_detected == 0:
-                self.fail("Detected {} events when should have detected > 0".format(events_detected))
+                self.fail("Detected {} events when should have detected > 0".format(
+                    events_detected))
 
             for level in self.detect_level:
                 level_line = '(?i){}: (\d+)'.format(level)
                 match = re.search(level_line, res.stdout.decode("utf-8"))
 
                 if match is None:
-                    self.fail("Could not find a line '{}: <count>' in falco output".format(level))
+                    self.fail(
+                        "Could not find a line '{}: <count>' in falco output".format(level))
 
                     events_detected = int(match.group(1))
 
                     if not events_detected > 0:
-                        self.fail("Detected {} events at level {} when should have detected > 0".format(events_detected, level))
+                        self.fail("Detected {} events at level {} when should have detected > 0".format(
+                            events_detected, level))
 
     def check_detections_by_rule(self, res):
         # Get the number of events detected for each rule. Must match the expected counts.
-        match = re.search('Triggered rules by rule name:(.*)', res.stdout.decode("utf-8"), re.DOTALL)
+        match = re.search('Triggered rules by rule name:(.*)',
+                          res.stdout.decode("utf-8"), re.DOTALL)
         if match is None:
-            self.fail("Could not find a block 'Triggered rules by rule name: ...' in falco output")
+            self.fail(
+                "Could not find a block 'Triggered rules by rule name: ...' in falco output")
 
         triggered_rules = match.group(1)
 
         for rule, count in list(self.detect_counts.items()):
-            expected = '\s{}: (\d+)'.format(re.sub(r'([$\.*+?()[\]{}|^])', r'\\\1', rule))
+            expected = '\s{}: (\d+)'.format(
+                re.sub(r'([$\.*+?()[\]{}|^])', r'\\\1', rule))
             match = re.search(expected, triggered_rules)
 
             if match is None:
@@ -307,9 +357,11 @@ class FalcoTest(Test):
                 actual_count = int(match.group(1))
 
             if actual_count != count:
-                self.fail("Different counts for rule {}: expected={}, actual={}".format(rule, count, actual_count))
+                self.fail("Different counts for rule {}: expected={}, actual={}".format(
+                    rule, count, actual_count))
             else:
-                self.log.debug("Found expected count for rule {}: {}".format(rule, count))
+                self.log.debug(
+                    "Found expected count for rule {}: {}".format(rule, count))
 
     def check_outputs(self):
         for output in self.outputs:
@@ -324,7 +376,8 @@ class FalcoTest(Test):
                     found = True
 
             if found == False:
-                self.fail("Could not find a line '{}' in file '{}'".format(output['line'], output['file']))
+                self.fail("Could not find a line '{}' in file '{}'".format(
+                    output['line'], output['file']))
 
         return True
 
@@ -341,7 +394,27 @@ class FalcoTest(Test):
                         attrs = ['time', 'rule', 'priority']
                     for attr in attrs:
                         if not attr in obj:
-                            self.fail("Falco JSON object {} does not contain property \"{}\"".format(line, attr))
+                            self.fail(
+                                "Falco JSON object {} does not contain property \"{}\"".format(line, attr))
+
+    def check_output_strictly_contains(self, res):
+        for output in self.output_strictly_contains:
+            # Read the expected output (from a file) and actual output (either from a file or the stdout),
+            # then check if the actual one strictly contains the expected one.
+
+            expected = open(output['expected']).read()
+
+            if output['actual'] == 'stdout':
+                actual = res.stdout.decode("utf-8")
+            else:
+                actual = open(output['actual']).read()
+
+            if expected not in actual:
+                self.fail("Output '{}' does not strictly contains the expected content '{}'".format(
+                    output['actual'], output['expected']))
+                return False
+
+        return True
 
     def install_package(self):
 
@@ -360,35 +433,39 @@ class FalcoTest(Test):
                                          self.module_dir, self.addl_docker_run_args, image)
 
         elif self.package.endswith(".deb"):
-            self.falco_binary_path = '/usr/bin/falco';
+            self.falco_binary_path = '/usr/bin/falco'
 
             package_glob = "{}/{}".format(self.falcodir, self.package)
 
             matches = glob.glob(package_glob)
 
             if len(matches) != 1:
-                self.fail("Package path {} did not match exactly 1 file. Instead it matched: {}", package_glob, ",".join(matches))
+                self.fail("Package path {} did not match exactly 1 file. Instead it matched: {}",
+                          package_glob, ",".join(matches))
 
             package_path = matches[0]
 
             cmdline = "dpkg -i {}".format(package_path)
-            self.log.debug("Installing debian package via \"{}\"".format(cmdline))
+            self.log.debug(
+                "Installing debian package via \"{}\"".format(cmdline))
             res = process.run(cmdline, timeout=120, sudo=True)
 
         elif self.package.endswith(".rpm"):
-            self.falco_binary_path = '/usr/bin/falco';
+            self.falco_binary_path = '/usr/bin/falco'
 
             package_glob = "{}/{}".format(self.falcodir, self.package)
 
             matches = glob.glob(package_glob)
 
             if len(matches) != 1:
-                self.fail("Package path {} did not match exactly 1 file. Instead it matched: {}", package_glob, ",".join(matches))
+                self.fail("Package path {} did not match exactly 1 file. Instead it matched: {}",
+                          package_glob, ",".join(matches))
 
             package_path = matches[0]
 
             cmdline = "rpm -i --nodeps --noscripts {}".format(package_path)
-            self.log.debug("Installing centos package via \"{}\"".format(cmdline))
+            self.log.debug(
+                "Installing centos package via \"{}\"".format(cmdline))
             res = process.run(cmdline, timeout=120, sudo=True)
 
     def uninstall_package(self):
@@ -398,25 +475,29 @@ class FalcoTest(Test):
 
         elif self.package.endswith(".rpm"):
             cmdline = "rpm -e --noscripts --nodeps falco"
-            self.log.debug("Uninstalling centos package via \"{}\"".format(cmdline))
+            self.log.debug(
+                "Uninstalling centos package via \"{}\"".format(cmdline))
             res = process.run(cmdline, timeout=120, sudo=True)
 
         elif self.package.endswith(".deb"):
             cmdline = "dpkg --purge falco"
-            self.log.debug("Uninstalling debian package via \"{}\"".format(cmdline))
+            self.log.debug(
+                "Uninstalling debian package via \"{}\"".format(cmdline))
             res = process.run(cmdline, timeout=120, sudo=True)
 
     def possibly_copy_driver(self):
         # Remove the contents of ~/.falco regardless of copy_local_driver.
         self.log.debug("Checking for module dir {}".format(self.module_dir))
         if os.path.isdir(self.module_dir):
-            self.log.info("Removing files below directory {}".format(self.module_dir))
+            self.log.info(
+                "Removing files below directory {}".format(self.module_dir))
             for rmfile in glob.glob(self.module_dir + "/*"):
                 self.log.debug("Removing file {}".format(rmfile))
                 os.remove(rmfile)
 
         if self.copy_local_driver:
-            verlines = [str.strip() for str in subprocess.check_output([self.falco_binary_path, "--version"]).splitlines()]
+            verlines = [str.strip() for str in subprocess.check_output(
+                [self.falco_binary_path, "--version"]).splitlines()]
             verstr = verlines[0].decode("utf-8")
             self.log.info("verstr {}".format(verstr))
             falco_version = verstr.split(" ")[2]
@@ -428,10 +509,12 @@ class FalcoTest(Test):
 
             # falco-driver-loader has a more comprehensive set of ways to
             # find the config hash. We only look at /boot/config-<kernel release>
-            md5_output = subprocess.check_output(["md5sum", "/boot/config-{}".format(kernel_release)]).rstrip()
+            md5_output = subprocess.check_output(
+                ["md5sum", "/boot/config-{}".format(kernel_release)]).rstrip()
             config_hash = md5_output.split(" ")[0]
 
-            probe_filename = "falco-{}-{}-{}-{}.ko".format(falco_version, arch, kernel_release, config_hash)
+            probe_filename = "falco-{}-{}-{}-{}.ko".format(
+                falco_version, arch, kernel_release, config_hash)
             driver_path = os.path.join(self.falcodir, "driver", "falco.ko")
             module_path = os.path.join(self.module_dir, probe_filename)
             self.log.debug("Copying {} to {}".format(driver_path, module_path))
@@ -442,20 +525,22 @@ class FalcoTest(Test):
         if len(self.grpc_results) > 0:
             if not self.is_grpc_using_unix_socket:
                 self.fail("This test suite supports gRPC with unix socket only")
-            
-            cmdline = "grpcurl -import-path ../userspace/falco " \
-                            "-proto {} -plaintext -unix {} " \
-                            "{}/{}".format(self.grpc_proto, self.grpc_address, self.grpc_service, self.grpc_method)
+
+            cmdline = "grpcurl -format text -import-path ../userspace/falco " \
+                "-proto {} -plaintext -unix {} " \
+                "{}/{}".format(self.grpc_proto, self.grpc_address,
+                               self.grpc_service, self.grpc_method)
             that = self
+
             class GRPCUnixSocketEventHandler(PatternMatchingEventHandler):
                 def on_created(self, event):
                     # that.log.info("EVENT: {}", event)
                     that.grpcurl_res = process.run(cmdline)
-                    
+
             path = os.path.dirname(self.grpc_address)
             process.run("mkdir -p {}".format(path))
             event_handler = GRPCUnixSocketEventHandler(patterns=['*'],
-                                ignore_directories=True)
+                                                       ignore_directories=True)
             self.grpc_observer = Observer()
             self.grpc_observer.schedule(event_handler, path, recursive=False)
             self.grpc_observer.start()
@@ -470,19 +555,19 @@ class FalcoTest(Test):
             for exp_result in self.grpc_results:
                 found = False
                 for line in self.grpcurl_res.stdout.decode("utf-8").splitlines():
-                    match = re.search(exp_result, line)
-
-                    if match is not None:
+                    if exp_result in line:
                         found = True
+                        break
 
                 if found == False:
-                    self.fail("Could not find a line '{}' in gRPC responses".format(exp_result))
-
+                    self.fail(
+                        "Could not find a line with '{}' in gRPC responses (protobuf text".format(exp_result))
 
     def test(self):
         self.log.info("Trace file %s", self.trace_file)
 
-        self.falco_binary_path = '{}/userspace/falco/falco'.format(self.falcodir)
+        self.falco_binary_path = '{}/userspace/falco/falco'.format(
+            self.falcodir)
 
         self.possibly_copy_driver()
 
@@ -501,9 +586,11 @@ class FalcoTest(Test):
         if self.psp_file != "":
 
             if not os.path.isfile(self.psp_conv_path):
-                self.log.info("Downloading {} to {}".format(self.psp_conv_url, self.psp_conv_path))
+                self.log.info("Downloading {} to {}".format(
+                    self.psp_conv_url, self.psp_conv_path))
 
-                urllib.request.urlretrieve(self.psp_conv_url, self.psp_conv_path)
+                urllib.request.urlretrieve(
+                    self.psp_conv_url, self.psp_conv_path)
                 os.chmod(self.psp_conv_path, stat.S_IEXEC)
 
             conv_cmd = '{} convert psp --psp-path {} --rules-path {}'.format(
@@ -521,7 +608,6 @@ class FalcoTest(Test):
                 psp_rules = myfile.read()
                 self.log.debug("Converted Rules: {}".format(psp_rules))
 
-
         # Run falco
         cmd = '{} {} {} -c {} {} -o json_output={} -o json_include_output_property={} -o priority={} -v'.format(
             self.falco_binary_path, self.rules_args, self.disabled_args, self.conf_file, trace_arg, self.json_output, self.json_include_output_property, self.priority)
@@ -557,22 +643,26 @@ class FalcoTest(Test):
         for pattern in self.stderr_contains:
             match = re.search(pattern, res.stderr.decode("utf-8"))
             if match is None:
-                self.fail("Stderr of falco process did not contain content matching {}".format(pattern))
+                self.fail(
+                    "Stderr of falco process did not contain content matching {}".format(pattern))
 
         for pattern in self.stdout_contains:
             match = re.search(pattern, res.stdout.decode("utf-8"))
             if match is None:
-                self.fail("Stdout of falco process '{}' did not contain content matching {}".format(res.stdout.decode("utf-8"), pattern))
+                self.fail("Stdout of falco process '{}' did not contain content matching {}".format(
+                    res.stdout.decode("utf-8"), pattern))
 
         for pattern in self.stderr_not_contains:
             match = re.search(pattern, res.stderr.decode("utf-8"))
             if match is not None:
-                self.fail("Stderr of falco process contained content matching {} when it should have not".format(pattern))
+                self.fail(
+                    "Stderr of falco process contained content matching {} when it should have not".format(pattern))
 
         for pattern in self.stdout_not_contains:
             match = re.search(pattern, res.stdout.decode("utf-8"))
             if match is not None:
-                self.fail("Stdout of falco process '{}' did contain content matching {} when it should have not".format(res.stdout.decode("utf-8"), pattern))
+                self.fail("Stdout of falco process '{}' did contain content matching {} when it should have not".format(
+                    res.stdout.decode("utf-8"), pattern))
 
         if res.exit_status != self.exit_status:
             self.error("Falco command \"{}\" exited with unexpected return value {} (!= {})".format(
@@ -590,6 +680,7 @@ class FalcoTest(Test):
             self.check_detections_by_rule(res)
         self.check_json_output(res)
         self.check_outputs()
+        self.check_output_strictly_contains(res)
         self.check_grpc()
         pass
 

test/falco_tests.yaml

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2016-2018 The Falco Authors..
+# Copyright (C) 2020 The Falco Authors.
 #
 # This file is part of falco.
 #
@@ -652,25 +652,50 @@ trace_files: !mux
     trace_file: trace_files/cat_write.scap
     stdout_contains: "Warning An open was seen .cport=<NA> command=cat /dev/null."
 
-  file_output:
+  stdout_output_strict:
+    detect: True
+    detect_level: WARNING
+    rules_file:
+      - rules/single_rule.yaml
+    conf_file: confs/stdout_output.yaml
+    trace_file: trace_files/cat_write.scap
+    time_iso_8601: true
+    output_strictly_contains:
+      - stdout: output_files/single_rule_with_cat_write.txt
+
+  stdout_output_json_strict:
+    json_output: True
+    detect: True
+    detect_level: WARNING
+    rules_file:
+      - rules/single_rule.yaml
+    conf_file: confs/stdout_output.yaml
+    trace_file: trace_files/cat_write.scap
+    time_iso_8601: true
+    output_strictly_contains:
+      - stdout: output_files/single_rule_with_cat_write.json
+
+  file_output_strict:
     detect: True
     detect_level: WARNING
     rules_file:
       - rules/single_rule.yaml
     conf_file: confs/file_output.yaml
     trace_file: trace_files/cat_write.scap
-    outputs:
-      - /tmp/falco_outputs/file_output.txt: Warning An open was seen
+    time_iso_8601: true
+    output_strictly_contains:
+      - /tmp/falco_outputs/file_output.txt: output_files/single_rule_with_cat_write.txt
 
-  program_output:
+  program_output_strict:
     detect: True
     detect_level: WARNING
     rules_file:
       - rules/single_rule.yaml
     conf_file: confs/program_output.yaml
     trace_file: trace_files/cat_write.scap
-    outputs:
-      - /tmp/falco_outputs/program_output.txt: Warning An open was seen
+    time_iso_8601: true
+    output_strictly_contains:
+      - /tmp/falco_outputs/program_output.txt: output_files/single_rule_with_cat_write.txt
 
   grpc_unix_socket_outputs:
     detect: True
@@ -680,13 +705,26 @@ trace_files: !mux
     conf_file: confs/grpc_unix_socket.yaml
     trace_file: trace_files/cat_write.scap
     run_duration: 5
+    time_iso_8601: true
     grpc:
       address: unix:///tmp/falco/falco.sock
       proto: outputs.proto
       service: falco.outputs.service
       method: get
+      # protobuf text format
       results:
-        - "Warning An open was seen"
+        - "seconds:1470327477 nanos:881781397"
+        - "priority: WARNING"
+        - "rule: \"open_from_cat\""
+        - "output: \"2016-08-04T16:17:57.881781397+0000: Warning An open was seen (command=cat /dev/null)\""
+        # output fields
+        - "key: \"evt.time.iso8601\""
+        - "value: \"2016-08-04T16:17:57.881781397+0000\""
+        - "key: \"proc.cmdline\""
+        - "value: \"cat /dev/null\""
+        # For the hostname, since we don't know that beforehand,
+        # only check the field presence
+        - "hostname: "
 
   detect_counts:
     detect: True

test/output_files/single_rule_with_cat_write.json

@@ -0,0 +1,8 @@
+{"output":"2016-08-04T16:17:57.881781397+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.881781397Z", "output_fields": {"evt.time.iso8601":1470327477881781397,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.881785348+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.881785348Z", "output_fields": {"evt.time.iso8601":1470327477881785348,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.881796705+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.881796705Z", "output_fields": {"evt.time.iso8601":1470327477881796705,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.881799840+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.881799840Z", "output_fields": {"evt.time.iso8601":1470327477881799840,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.882003104+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.882003104Z", "output_fields": {"evt.time.iso8601":1470327477882003104,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.882008208+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.882008208Z", "output_fields": {"evt.time.iso8601":1470327477882008208,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.882045694+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.882045694Z", "output_fields": {"evt.time.iso8601":1470327477882045694,"proc.cmdline":"cat /dev/null"}}
+{"output":"2016-08-04T16:17:57.882054739+0000: Warning An open was seen (command=cat /dev/null)","priority":"Warning","rule":"open_from_cat","time":"2016-08-04T16:17:57.882054739Z", "output_fields": {"evt.time.iso8601":1470327477882054739,"proc.cmdline":"cat /dev/null"}}

test/output_files/single_rule_with_cat_write.txt

@@ -0,0 +1,8 @@
+2016-08-04T16:17:57.881781397+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.881785348+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.881796705+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.881799840+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.882003104+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.882008208+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.882045694+0000: Warning An open was seen (command=cat /dev/null)
+2016-08-04T16:17:57.882054739+0000: Warning An open was seen (command=cat /dev/null)

test/rules/detect_connect_using_in.yaml

@@ -18,5 +18,5 @@
   desc: Detect any connect to the localhost network, using fd.net and the in operator
   condition: evt.type=connect and fd.net in ("127.0.0.1/24")
   output: Program connected to localhost network
-    (user=%user.name command=%proc.cmdline connection=%fd.name)
+    (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name)
   priority: INFO

test/run_regression_tests.sh

@@ -19,6 +19,13 @@ set -euo pipefail
 
 SCRIPT=$(readlink -f $0)
 SCRIPTDIR=$(dirname "$SCRIPT")
+SKIP_PACKAGES_TESTS=${SKIP_PACKAGES_TESTS:-false}
+
+# Trace file tarballs are now versioned. Any time a substantial change
+# is made that affects the interaction of rules+engine and the trace
+# files here, upload a new trace file zip file and change the version
+# suffix here.
+TRACE_FILES_VERSION=20200831
 
 function download_trace_files() {
     for TRACE in traces-positive traces-negative traces-info ; do
@@ -26,7 +33,7 @@ function download_trace_files() {
         if [ "$OPT_BRANCH" != "none" ]; then
         curl -fso "$TRACE_DIR/$TRACE.zip" https://s3.amazonaws.com/download.draios.com/falco-tests/$TRACE-$OPT_BRANCH.zip
         else
-        curl -fso "$TRACE_DIR/$TRACE.zip" https://s3.amazonaws.com/download.draios.com/falco-tests/$TRACE.zip
+        curl -fso "$TRACE_DIR/$TRACE.zip" https://s3.amazonaws.com/download.draios.com/falco-tests/$TRACE-$TRACE_FILES_VERSION.zip
         fi
         unzip -d "$TRACE_DIR" "$TRACE_DIR/$TRACE.zip"
         rm -rf "$TRACE_DIR/$TRACE.zip"
@@ -91,8 +98,18 @@ function run_tests() {
     # as we're watching the return status when running avocado.
     set +e
     TEST_RC=0
-    for mult in $SCRIPTDIR/falco_traces.yaml $SCRIPTDIR/falco_tests.yaml $SCRIPTDIR/falco_tests_package.yaml $SCRIPTDIR/falco_k8s_audit_tests.yaml $SCRIPTDIR/falco_tests_psp.yaml; do
-        CMD="avocado run --mux-yaml $mult --job-results-dir $SCRIPTDIR/job-results -- $SCRIPTDIR/falco_test.py"
+    suites=($SCRIPTDIR/falco_traces.yaml $SCRIPTDIR/falco_tests.yaml $SCRIPTDIR/falco_k8s_audit_tests.yaml $SCRIPTDIR/falco_tests_psp.yaml)
+
+    if [ "$SKIP_PACKAGES_TESTS" = false ] ; then
+        suites+=($SCRIPTDIR/falco_tests_package.yaml)
+    fi
+    
+    XUNIT_DIR="${OPT_BUILD_DIR}/integration-tests-xunit"
+    mkdir -p "${XUNIT_DIR}"
+
+    for mult in "${suites[@]}"; do
+        XUNIT_FILE_NAME="${XUNIT_DIR}/$(basename "${mult}").xml"
+        CMD="avocado run --xunit ${XUNIT_FILE_NAME} --mux-yaml $mult --job-results-dir $SCRIPTDIR/job-results -- $SCRIPTDIR/falco_test.py"
         echo "Running $CMD"
         BUILD_DIR=${OPT_BUILD_DIR} $CMD
         RC=$?

tests/CMakeLists.txt

@@ -14,7 +14,11 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 #
-set(FALCO_TESTS_SOURCES test_base.cpp engine/test_token_bucket.cpp engine/test_rulesets.cpp engine/test_falco_utils.cpp falco/test_webserver.cpp)
+if(MINIMAL_BUILD)
+  set(FALCO_TESTS_SOURCES test_base.cpp engine/test_token_bucket.cpp engine/test_rulesets.cpp engine/test_falco_utils.cpp)
+else()
+  set(FALCO_TESTS_SOURCES test_base.cpp engine/test_token_bucket.cpp engine/test_rulesets.cpp engine/test_falco_utils.cpp falco/test_webserver.cpp)
+endif()
 
 set(FALCO_TESTED_LIBRARIES falco_engine)
 
@@ -35,14 +39,25 @@ if(FALCO_BUILD_TESTS)
   add_executable(falco_test ${FALCO_TESTS_SOURCES})
 
   target_link_libraries(falco_test PUBLIC ${FALCO_TESTED_LIBRARIES})
-  target_include_directories(
-    falco_test
-    PUBLIC "${CATCH2_INCLUDE}"
-           "${FAKEIT_INCLUDE}"
-           "${PROJECT_SOURCE_DIR}/userspace/engine"
-           "${YAMLCPP_INCLUDE_DIR}"
-           "${CIVETWEB_INCLUDE_DIR}"
-           "${PROJECT_SOURCE_DIR}/userspace/falco")
+
+  if(MINIMAL_BUILD)
+    target_include_directories(
+      falco_test
+      PUBLIC "${CATCH2_INCLUDE}"
+            "${FAKEIT_INCLUDE}"
+            "${PROJECT_SOURCE_DIR}/userspace/engine"
+            "${YAMLCPP_INCLUDE_DIR}"
+            "${PROJECT_SOURCE_DIR}/userspace/falco")
+  else()
+    target_include_directories(
+      falco_test
+      PUBLIC "${CATCH2_INCLUDE}"
+            "${FAKEIT_INCLUDE}"
+            "${PROJECT_SOURCE_DIR}/userspace/engine"
+            "${YAMLCPP_INCLUDE_DIR}"
+            "${CIVETWEB_INCLUDE_DIR}"
+            "${PROJECT_SOURCE_DIR}/userspace/falco")
+  endif()
   add_dependencies(falco_test catch2)
 
   include(CMakeParseArguments)

userspace/engine/CMakeLists.txt

@@ -27,18 +27,32 @@ if(USE_BUNDLED_DEPS)
   add_dependencies(falco_engine libyaml)
 endif()
 
-target_include_directories(
-  falco_engine
-  PUBLIC
-    "${LUAJIT_INCLUDE}"
-    "${NJSON_INCLUDE}"
-    "${CURL_INCLUDE_DIR}"
-    "${TBB_INCLUDE_DIR}"
-    "${STRING_VIEW_LITE_INCLUDE}"
-    "${SYSDIG_SOURCE_DIR}/userspace/libsinsp/third-party/jsoncpp"
-    "${SYSDIG_SOURCE_DIR}/userspace/libscap"
-    "${SYSDIG_SOURCE_DIR}/userspace/libsinsp"
-    "${PROJECT_BINARY_DIR}/userspace/engine")
+if(MINIMAL_BUILD)
+  target_include_directories(
+    falco_engine
+    PUBLIC
+      "${LUAJIT_INCLUDE}"
+      "${NJSON_INCLUDE}"
+      "${TBB_INCLUDE_DIR}"
+      "${STRING_VIEW_LITE_INCLUDE}"
+      "${SYSDIG_SOURCE_DIR}/userspace/libsinsp/third-party/jsoncpp"
+      "${SYSDIG_SOURCE_DIR}/userspace/libscap"
+      "${SYSDIG_SOURCE_DIR}/userspace/libsinsp"
+      "${PROJECT_BINARY_DIR}/userspace/engine")
+else()
+  target_include_directories(
+    falco_engine
+    PUBLIC
+      "${LUAJIT_INCLUDE}"
+      "${NJSON_INCLUDE}"
+      "${CURL_INCLUDE_DIR}"
+      "${TBB_INCLUDE_DIR}"
+      "${STRING_VIEW_LITE_INCLUDE}"
+      "${SYSDIG_SOURCE_DIR}/userspace/libsinsp/third-party/jsoncpp"
+      "${SYSDIG_SOURCE_DIR}/userspace/libscap"
+      "${SYSDIG_SOURCE_DIR}/userspace/libsinsp"
+      "${PROJECT_BINARY_DIR}/userspace/engine")
+endif()
 
 target_link_libraries(falco_engine "${FALCO_SINSP_LIBRARY}" "${LPEG_LIB}" "${LYAML_LIB}" "${LIBYAML_LIB}")
 

userspace/engine/falco_engine.cpp

@@ -171,9 +171,8 @@ void falco_engine::load_rules(const string &rules_content, bool verbose, bool al
 					  m_ls);
 	}
 
-	// Note that falco_formats is added to both the lua state used
-	// by the falco engine as well as the separate lua state used
-	// by falco outputs.  Within the engine, only
+	// Note that falco_formats is added to the lua state used
+	// by the falco engine only. Within the engine, only
 	// formats.formatter is used, so we can unconditionally set
 	// json_output to false.
 	bool json_output = false;

userspace/engine/falco_engine_version.h

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ limitations under the License.
 
 // The version of rules/filter fields/etc supported by this falco
 // engine.
-#define FALCO_ENGINE_VERSION (6)
+#define FALCO_ENGINE_VERSION (7)
 
 // This is the result of running "falco --list -N | sha256sum" and
 // represents the fields supported by this version of falco. It's used

userspace/engine/formats.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -20,24 +20,19 @@ limitations under the License.
 #include "falco_engine.h"
 #include "banned.h" // This raises a compilation error when certain functions are used
 
-
-sinsp* falco_formats::s_inspector = NULL;
+sinsp *falco_formats::s_inspector = NULL;
 falco_engine *falco_formats::s_engine = NULL;
 bool falco_formats::s_json_output = false;
 bool falco_formats::s_json_include_output_property = true;
-sinsp_evt_formatter_cache *falco_formats::s_formatters = NULL;
+std::unique_ptr<sinsp_evt_formatter_cache> falco_formats::s_formatters = NULL;
 
-const static struct luaL_reg ll_falco [] =
-{
-	{"formatter", &falco_formats::formatter},
-	{"free_formatter", &falco_formats::free_formatter},
-	{"free_formatters", &falco_formats::free_formatters},
-	{"format_event", &falco_formats::format_event},
-	{"resolve_tokens", &falco_formats::resolve_tokens},
-	{NULL,NULL}
-};
+const static struct luaL_Reg ll_falco[] =
+	{
+		{"formatter", &falco_formats::lua_formatter},
+		{"free_formatter", &falco_formats::lua_free_formatter},
+		{NULL, NULL}};
 
-void falco_formats::init(sinsp* inspector,
+void falco_formats::init(sinsp *inspector,
 			 falco_engine *engine,
 			 lua_State *ls,
 			 bool json_output,
@@ -47,15 +42,14 @@ void falco_formats::init(sinsp* inspector,
 	s_engine = engine;
 	s_json_output = json_output;
 	s_json_include_output_property = json_include_output_property;
-	if(!s_formatters)
-	{
-		s_formatters = new sinsp_evt_formatter_cache(s_inspector);
-	}
+
+	// todo(leogr): we should have used std::make_unique, but we cannot since it's not C++14
+	s_formatters = std::unique_ptr<sinsp_evt_formatter_cache>(new sinsp_evt_formatter_cache(s_inspector));
 
 	luaL_openlib(ls, "formats", ll_falco, 0);
 }
 
-int falco_formats::formatter(lua_State *ls)
+int falco_formats::lua_formatter(lua_State *ls)
 {
 	string source = luaL_checkstring(ls, -2);
 	string format = luaL_checkstring(ls, -1);
@@ -64,7 +58,7 @@ int falco_formats::formatter(lua_State *ls)
 	{
 		if(source == "syscall")
 		{
-			sinsp_evt_formatter* formatter;
+			sinsp_evt_formatter *formatter;
 			formatter = new sinsp_evt_formatter(s_inspector, format);
 			lua_pushlightuserdata(ls, formatter);
 		}
@@ -75,11 +69,11 @@ int falco_formats::formatter(lua_State *ls)
 			lua_pushlightuserdata(ls, formatter);
 		}
 	}
-	catch(sinsp_exception& e)
+	catch(sinsp_exception &e)
 	{
 		luaL_error(ls, "Invalid output format '%s': '%s'", format.c_str(), e.what());
 	}
-	catch(falco_exception& e)
+	catch(falco_exception &e)
 	{
 		luaL_error(ls, "Invalid output format '%s': '%s'", format.c_str(), e.what());
 	}
@@ -87,10 +81,10 @@ int falco_formats::formatter(lua_State *ls)
 	return 1;
 }
 
-int falco_formats::free_formatter(lua_State *ls)
+int falco_formats::lua_free_formatter(lua_State *ls)
 {
-	if (!lua_islightuserdata(ls, -1) ||
-	    !lua_isstring(ls, -2))
+	if(!lua_islightuserdata(ls, -1) ||
+	   !lua_isstring(ls, -2))
 
 	{
 		luaL_error(ls, "Invalid argument passed to free_formatter");
@@ -100,115 +94,75 @@ int falco_formats::free_formatter(lua_State *ls)
 
 	if(source == "syscall")
 	{
-		sinsp_evt_formatter *formatter = (sinsp_evt_formatter *) lua_topointer(ls, -1);
+		sinsp_evt_formatter *formatter = (sinsp_evt_formatter *)lua_topointer(ls, -1);
 		delete(formatter);
 	}
 	else
 	{
-		json_event_formatter *formatter = (json_event_formatter *) lua_topointer(ls, -1);
+		json_event_formatter *formatter = (json_event_formatter *)lua_topointer(ls, -1);
 		delete(formatter);
 	}
 
 	return 0;
 }
 
-int falco_formats::free_formatters(lua_State *ls)
+string falco_formats::format_event(const gen_event *evt, const std::string &rule, const std::string &source,
+				   const std::string &level, const std::string &format)
 {
-	if(s_formatters)
-	{
-		delete(s_formatters);
-		s_formatters = NULL;
-	}
-	return 0;
-}
 
-int falco_formats::format_event (lua_State *ls)
-{
 	string line;
 	string json_line;
-
-	if (!lua_isstring(ls, -1) ||
-	    !lua_isstring(ls, -2) ||
-	    !lua_isstring(ls, -3) ||
-	    !lua_isstring(ls, -4) ||
-	    !lua_islightuserdata(ls, -5)) {
-		lua_pushstring(ls, "Invalid arguments passed to format_event()");
-		lua_error(ls);
-	}
-	gen_event* evt = (gen_event*)lua_topointer(ls, 1);
-	const char *rule = (char *) lua_tostring(ls, 2);
-	const char *source = (char *) lua_tostring(ls, 3);
-	const char *level = (char *) lua_tostring(ls, 4);
-	const char *format = (char *) lua_tostring(ls, 5);
-
 	string sformat = format;
 
-	if(strcmp(source, "syscall") == 0)
+	if(strcmp(source.c_str(), "syscall") == 0)
 	{
-		try {
-			// This is "output"
-			s_formatters->tostring((sinsp_evt *) evt, sformat, &line);
+		// This is "output"
+		s_formatters->tostring((sinsp_evt *)evt, sformat, &line);
 
-			if(s_json_output)
-			{
-				sinsp_evt::param_fmt cur_fmt = s_inspector->get_buffer_format();
-				switch(cur_fmt)
-				{
-					case sinsp_evt::PF_NORMAL:
-						s_inspector->set_buffer_format(sinsp_evt::PF_JSON);
-						break;
-					case sinsp_evt::PF_EOLS:
-						s_inspector->set_buffer_format(sinsp_evt::PF_JSONEOLS);
-						break;
-					case sinsp_evt::PF_HEX:
-						s_inspector->set_buffer_format(sinsp_evt::PF_JSONHEX);
-						break;
-					case sinsp_evt::PF_HEXASCII:
-						s_inspector->set_buffer_format(sinsp_evt::PF_JSONHEXASCII);
-						break;
-					case sinsp_evt::PF_BASE64:
-						s_inspector->set_buffer_format(sinsp_evt::PF_JSONBASE64);
-						break;
-					default:
-						// do nothing
-						break;
-				}
-				// This is output fields
-				s_formatters->tostring((sinsp_evt *) evt, sformat, &json_line);
-
-				// The formatted string might have a leading newline. If it does, remove it.
-				if (json_line[0] == '\n')
-				{
-					json_line.erase(0, 1);
-				}
-				s_inspector->set_buffer_format(cur_fmt);
-			}
-		}
-		catch (sinsp_exception& e)
+		if(s_json_output)
 		{
-			string err = "Invalid output format '" + sformat + "': '" + string(e.what()) + "'";
-			lua_pushstring(ls, err.c_str());
-			lua_error(ls);
+			sinsp_evt::param_fmt cur_fmt = s_inspector->get_buffer_format();
+			switch(cur_fmt)
+			{
+			case sinsp_evt::PF_NORMAL:
+				s_inspector->set_buffer_format(sinsp_evt::PF_JSON);
+				break;
+			case sinsp_evt::PF_EOLS:
+				s_inspector->set_buffer_format(sinsp_evt::PF_JSONEOLS);
+				break;
+			case sinsp_evt::PF_HEX:
+				s_inspector->set_buffer_format(sinsp_evt::PF_JSONHEX);
+				break;
+			case sinsp_evt::PF_HEXASCII:
+				s_inspector->set_buffer_format(sinsp_evt::PF_JSONHEXASCII);
+				break;
+			case sinsp_evt::PF_BASE64:
+				s_inspector->set_buffer_format(sinsp_evt::PF_JSONBASE64);
+				break;
+			default:
+				// do nothing
+				break;
+			}
+			// This is output fields
+			s_formatters->tostring((sinsp_evt *)evt, sformat, &json_line);
+
+			// The formatted string might have a leading newline. If it does, remove it.
+			if(json_line[0] == '\n')
+			{
+				json_line.erase(0, 1);
+			}
+			s_inspector->set_buffer_format(cur_fmt);
 		}
 	}
 	else
 	{
-		try {
+		json_event_formatter formatter(s_engine->json_factory(), sformat);
 
-			json_event_formatter formatter(s_engine->json_factory(), sformat);
+		line = formatter.tostring((json_event *)evt);
 
-			line = formatter.tostring((json_event *) evt);
-
-			if(s_json_output)
-			{
-				json_line = formatter.tojson((json_event *) evt);
-			}
-		}
-		catch (exception &e)
+		if(s_json_output)
 		{
-			string err = "Invalid output format '" + sformat + "': '" + string(e.what()) + "'";
-			lua_pushstring(ls, err.c_str());
-			lua_error(ls);
+			json_line = formatter.tojson((json_event *)evt);
 		}
 	}
 
@@ -217,15 +171,16 @@ int falco_formats::format_event (lua_State *ls)
 	// message as well as the event time in ns. Use this to build
 	// a more detailed object containing the event time, rule,
 	// severity, full output, and fields.
-	if (s_json_output) {
+	if(s_json_output)
+	{
 		Json::Value event;
 		Json::FastWriter writer;
 		string full_line;
 
 		// Convert the time-as-nanoseconds to a more json-friendly ISO8601.
-		time_t evttime = evt->get_ts()/1000000000;
+		time_t evttime = evt->get_ts() / 1000000000;
 		char time_sec[20]; // sizeof "YYYY-MM-DDTHH:MM:SS"
-		char time_ns[12]; // sizeof ".sssssssssZ"
+		char time_ns[12];  // sizeof ".sssssssssZ"
 		string iso8601evttime;
 
 		strftime(time_sec, sizeof(time_sec), "%FT%T", gmtime(&evttime));
@@ -246,9 +201,9 @@ int falco_formats::format_event (lua_State *ls)
 
 		// Json::FastWriter may add a trailing newline. If it
 		// does, remove it.
-		if (full_line[full_line.length()-1] == '\n')
+		if(full_line[full_line.length() - 1] == '\n')
 		{
-			full_line.resize(full_line.length()-1);
+			full_line.resize(full_line.length() - 1);
 		}
 
 		// Cheat-graft the output from the formatter into this
@@ -261,24 +216,12 @@ int falco_formats::format_event (lua_State *ls)
 		line = full_line;
 	}
 
-	lua_pushstring(ls, line.c_str());
-	return 1;
+	return line.c_str();
 }
 
-int falco_formats::resolve_tokens(lua_State *ls)
+map<string, string> falco_formats::resolve_tokens(const gen_event *evt, const std::string &source, const std::string &format)
 {
-	if(!lua_isstring(ls, -1) ||
-	   !lua_isstring(ls, -2) ||
-	   !lua_islightuserdata(ls, -3))
-	{
-		lua_pushstring(ls, "Invalid arguments passed to resolve_tokens()");
-		lua_error(ls);
-	}
-	gen_event *evt = (gen_event *)lua_topointer(ls, 1);
-	string source = luaL_checkstring(ls, 2);
-	const char *format = (char *)lua_tostring(ls, 3);
 	string sformat = format;
-
 	map<string, string> values;
 	if(source == "syscall")
 	{
@@ -288,16 +231,7 @@ int falco_formats::resolve_tokens(lua_State *ls)
 	else
 	{
 		json_event_formatter json_formatter(s_engine->json_factory(), sformat);
-		values = json_formatter.tomap((json_event*) evt);
+		values = json_formatter.tomap((json_event *)evt);
 	}
-
-	lua_newtable(ls);
-	for(auto const& v : values)
-	{
-		lua_pushstring(ls, v.first.c_str());
-		lua_pushstring(ls, v.second.c_str());
-		lua_settable(ls, -3);
-	}
-
-	return 1;
+	return values;
 }

userspace/engine/formats.h

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -18,7 +18,8 @@ limitations under the License.
 
 #include "sinsp.h"
 
-extern "C" {
+extern "C"
+{
 #include "lua.h"
 #include "lualib.h"
 #include "lauxlib.h"
@@ -31,31 +32,28 @@ class sinsp_evt_formatter;
 
 class falco_formats
 {
- public:
-	static void init(sinsp* inspector,
+public:
+	static void init(sinsp *inspector,
 			 falco_engine *engine,
 			 lua_State *ls,
 			 bool json_output,
 			 bool json_include_output_property);
 
 	// formatter = falco.formatter(format_string)
-	static int formatter(lua_State *ls);
+	static int lua_formatter(lua_State *ls);
 
 	// falco.free_formatter(formatter)
-	static int free_formatter(lua_State *ls);
+	static int lua_free_formatter(lua_State *ls);
 
-	// falco.free_formatters()
-	static int free_formatters(lua_State *ls);
+	static string format_event(const gen_event *evt, const std::string &rule, const std::string &source,
+				   const std::string &level, const std::string &format);
 
-	// formatted_string = falco.format_event(evt, formatter)
-	static int format_event(lua_State *ls);
+	static map<string, string> resolve_tokens(const gen_event *evt, const std::string &source,
+						  const std::string &format);
 
-	// resolve_tokens = falco.resolve_tokens(evt, formatter)
-	static int resolve_tokens(lua_State *ls);
-
-	static sinsp* s_inspector;
+	static sinsp *s_inspector;
 	static falco_engine *s_engine;
-	static sinsp_evt_formatter_cache *s_formatters;
+	static std::unique_ptr<sinsp_evt_formatter_cache> s_formatters;
 	static bool s_json_output;
 	static bool s_json_include_output_property;
 };

userspace/engine/rules.cpp

@@ -26,15 +26,14 @@ extern "C" {
 #include "falco_engine.h"
 #include "banned.h" // This raises a compilation error when certain functions are used
 
-const static struct luaL_reg ll_falco_rules [] =
-{
-	{"clear_filters", &falco_rules::clear_filters},
-	{"add_filter", &falco_rules::add_filter},
-	{"add_k8s_audit_filter", &falco_rules::add_k8s_audit_filter},
-	{"enable_rule", &falco_rules::enable_rule},
-	{"engine_version", &falco_rules::engine_version},
-	{NULL,NULL}
-};
+const static struct luaL_Reg ll_falco_rules[] =
+	{
+		{"clear_filters", &falco_rules::clear_filters},
+		{"add_filter", &falco_rules::add_filter},
+		{"add_k8s_audit_filter", &falco_rules::add_k8s_audit_filter},
+		{"enable_rule", &falco_rules::enable_rule},
+		{"engine_version", &falco_rules::engine_version},
+		{NULL, NULL}};
 
 falco_rules::falco_rules(sinsp* inspector,
 			 falco_engine *engine,

userspace/falco/CMakeLists.txt

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2019 The Falco Authors.
+# Copyright (C) 2020 The Falco 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
@@ -11,10 +11,132 @@
 # specific language governing permissions and limitations under the License.
 #
 
-configure_file("${SYSDIG_SOURCE_DIR}/userspace/sysdig/config_sysdig.h.in" config_sysdig.h)
+configure_file(config_falco.h.in config_falco.h)
 
-add_custom_command(
-  OUTPUT
+set(
+  FALCO_SOURCES
+  configuration.cpp
+  logger.cpp
+  falco_outputs.cpp
+  outputs_file.cpp
+  outputs_program.cpp
+  outputs_stdout.cpp
+  outputs_syslog.cpp
+  event_drops.cpp
+  statsfilewriter.cpp
+  falco.cpp
+  "${SYSDIG_SOURCE_DIR}/userspace/libsinsp/fields_info.cpp"
+)
+
+set(
+  FALCO_INCLUDE_DIRECTORIES
+  "${PROJECT_SOURCE_DIR}/userspace/engine"
+  "${PROJECT_BINARY_DIR}/userspace/falco"
+  "${PROJECT_BINARY_DIR}/driver/src"
+  "${STRING_VIEW_LITE_INCLUDE}"
+  "${YAMLCPP_INCLUDE_DIR}"
+  "${CMAKE_CURRENT_BINARY_DIR}"
+  "${DRAIOS_DEPENDENCIES_DIR}/yaml-${DRAIOS_YAML_VERSION}/target/include"
+)
+
+set(
+  FALCO_DEPENDENCIES
+  string-view-lite
+  libyaml
+  b64
+  luajit
+  lpeg
+  lyaml
+)
+
+set(
+  FALCO_LIBRARIES
+  falco_engine
+  sinsp
+  "${LIBYAML_LIB}"
+  "${YAMLCPP_LIB}"
+)
+
+if(USE_BUNDLED_DEPS)
+  list(APPEND FALCO_DEPENDENCIES yamlcpp)
+endif()
+
+if(NOT MINIMAL_BUILD)
+  list(
+    APPEND FALCO_SOURCES
+    outputs_grpc.cpp
+    outputs_http.cpp
+    webserver.cpp
+    grpc_context.cpp
+    grpc_server_impl.cpp
+    grpc_request_context.cpp
+    grpc_server.cpp
+    grpc_context.cpp
+    grpc_server_impl.cpp
+    ${CMAKE_CURRENT_BINARY_DIR}/version.grpc.pb.cc
+    ${CMAKE_CURRENT_BINARY_DIR}/version.pb.cc
+    ${CMAKE_CURRENT_BINARY_DIR}/outputs.grpc.pb.cc
+    ${CMAKE_CURRENT_BINARY_DIR}/outputs.pb.cc
+    ${CMAKE_CURRENT_BINARY_DIR}/schema.pb.cc
+  )
+
+  list(
+    APPEND FALCO_INCLUDE_DIRECTORIES
+    "${CIVETWEB_INCLUDE_DIR}"
+    "${OPENSSL_INCLUDE_DIR}"
+    "${GRPC_INCLUDE}"
+    "${GRPCPP_INCLUDE}"
+    "${PROTOBUF_INCLUDE}"
+  )
+
+  list(APPEND FALCO_DEPENDENCIES civetweb)
+
+  list(
+    APPEND FALCO_LIBRARIES
+    "${GPR_LIB}"
+    "${GRPC_LIB}"
+    "${GRPCPP_LIB}"
+    "${PROTOBUF_LIB}"
+    "${OPENSSL_LIBRARY_SSL}"
+    "${OPENSSL_LIBRARY_CRYPTO}"
+    "${LIBYAML_LIB}"
+    "${YAMLCPP_LIB}"
+    "${CIVETWEB_LIB}"
+  )
+endif()
+
+add_executable(
+  falco
+  ${FALCO_SOURCES}
+)
+
+add_dependencies(falco ${FALCO_DEPENDENCIES})
+
+target_link_libraries(
+  falco
+  ${FALCO_LIBRARIES}
+)
+
+target_include_directories(
+  falco
+  PUBLIC
+  ${FALCO_INCLUDE_DIRECTORIES}
+)
+
+if(NOT MINIMAL_BUILD)
+  add_custom_command(
+    TARGET falco
+    COMMAND bash ${CMAKE_CURRENT_SOURCE_DIR}/verify_engine_fields.sh ${CMAKE_SOURCE_DIR}
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMENT "Comparing engine fields checksum in falco_engine.h to actual fields"
+  )
+else()
+  message(STATUS "Skipping engine fields checksum when building the minimal Falco.")
+endif()
+
+if(NOT MINIMAL_BUILD)
+  add_custom_command(
+    OUTPUT
     ${CMAKE_CURRENT_BINARY_DIR}/version.grpc.pb.cc
     ${CMAKE_CURRENT_BINARY_DIR}/version.grpc.pb.h
     ${CMAKE_CURRENT_BINARY_DIR}/version.pb.cc
@@ -25,92 +147,30 @@ add_custom_command(
     ${CMAKE_CURRENT_BINARY_DIR}/outputs.pb.h
     ${CMAKE_CURRENT_BINARY_DIR}/schema.pb.cc
     ${CMAKE_CURRENT_BINARY_DIR}/schema.pb.h
-  COMMENT "Generate gRPC API"
-  # Falco gRPC Version API
-  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/version.proto
-  COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --cpp_out=. ${CMAKE_CURRENT_SOURCE_DIR}/version.proto
-  COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --grpc_out=. --plugin=protoc-gen-grpc=${GRPC_CPP_PLUGIN}
-          ${CMAKE_CURRENT_SOURCE_DIR}/version.proto
-  # Falco gRPC Outputs API
-  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/outputs.proto
-  COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --cpp_out=. ${CMAKE_CURRENT_SOURCE_DIR}/outputs.proto
-          ${CMAKE_CURRENT_SOURCE_DIR}/schema.proto
-  COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --grpc_out=. --plugin=protoc-gen-grpc=${GRPC_CPP_PLUGIN}
-          ${CMAKE_CURRENT_SOURCE_DIR}/outputs.proto
-  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-
-add_executable(
-  falco
-  configuration.cpp
-  logger.cpp
-  falco_outputs.cpp
-  event_drops.cpp
-  statsfilewriter.cpp
-  falco.cpp
-  "${SYSDIG_SOURCE_DIR}/userspace/sysdig/fields_info.cpp"
-  webserver.cpp
-  grpc_context.cpp
-  grpc_server_impl.cpp
-  grpc_request_context.cpp
-  grpc_server.cpp
-  ${CMAKE_CURRENT_BINARY_DIR}/version.grpc.pb.cc
-  ${CMAKE_CURRENT_BINARY_DIR}/version.pb.cc
-  ${CMAKE_CURRENT_BINARY_DIR}/outputs.grpc.pb.cc
-  ${CMAKE_CURRENT_BINARY_DIR}/outputs.pb.cc
-  ${CMAKE_CURRENT_BINARY_DIR}/schema.pb.cc)
-
-add_dependencies(falco civetweb string-view-lite)
-
-if(USE_BUNDLED_DEPS)
-  add_dependencies(falco yamlcpp)
+    COMMENT "Generate gRPC API"
+    # Falco gRPC Version API
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/version.proto
+    COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --cpp_out=. ${CMAKE_CURRENT_SOURCE_DIR}/version.proto
+    COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --grpc_out=. --plugin=protoc-gen-grpc=${GRPC_CPP_PLUGIN}
+    ${CMAKE_CURRENT_SOURCE_DIR}/version.proto
+    # Falco gRPC Outputs API
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/outputs.proto
+    COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --cpp_out=. ${CMAKE_CURRENT_SOURCE_DIR}/outputs.proto
+    ${CMAKE_CURRENT_SOURCE_DIR}/schema.proto
+    COMMAND ${PROTOC} -I ${CMAKE_CURRENT_SOURCE_DIR} --grpc_out=. --plugin=protoc-gen-grpc=${GRPC_CPP_PLUGIN}
+    ${CMAKE_CURRENT_SOURCE_DIR}/outputs.proto
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+  )
 endif()
 
-target_include_directories(
-  falco
-  PUBLIC
-    "${SYSDIG_SOURCE_DIR}/userspace/sysdig"
-    "${PROJECT_SOURCE_DIR}/userspace/engine"
-    "${PROJECT_BINARY_DIR}/userspace/falco"
-    "${PROJECT_BINARY_DIR}/driver/src"
-    "${STRING_VIEW_LITE_INCLUDE}"
-    "${YAMLCPP_INCLUDE_DIR}"
-    "${CIVETWEB_INCLUDE_DIR}"
-    "${OPENSSL_INCLUDE_DIR}"
-    "${GRPC_INCLUDE}"
-    "${GRPCPP_INCLUDE}"
-    "${PROTOBUF_INCLUDE}"
-    "${CMAKE_CURRENT_BINARY_DIR}"
-    "${DRAIOS_DEPENDENCIES_DIR}/yaml-${DRAIOS_YAML_VERSION}/target/include")
-
-target_link_libraries(
-  falco
-  falco_engine
-  sinsp
-  "${GPR_LIB}"
-  "${GRPC_LIB}"
-  "${GRPCPP_LIB}"
-  "${PROTOBUF_LIB}"
-  "${OPENSSL_LIBRARY_SSL}"
-  "${OPENSSL_LIBRARY_CRYPTO}"
-  "${LIBYAML_LIB}"
-  "${YAMLCPP_LIB}"
-  "${CIVETWEB_LIB}")
-
-configure_file(config_falco.h.in config_falco.h)
-
-add_custom_command(
-  TARGET falco
-  COMMAND bash ${CMAKE_CURRENT_SOURCE_DIR}/verify_engine_fields.sh ${CMAKE_SOURCE_DIR} ${OPENSSL_BINARY}
-  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-  COMMENT "Comparing engine fields checksum in falco_engine.h to actual fields")
-
-# add_custom_target(verify_engine_fields DEPENDS verify_engine_fields.sh falco_engine.h)
-
-# add_dependencies(verify_engine_fields falco)
+# strip the Falco binary when releasing using musl
+if(MUSL_OPTIMIZED_BUILD AND CMAKE_BUILD_TYPE STREQUAL "release")
+  add_custom_command(
+    TARGET falco
+    POST_BUILD
+    COMMAND ${CMAKE_STRIP} --strip-unneeded falco
+    COMMENT "Strip the Falco binary when releasing the musl build"
+  )
+endif()
 
 install(TARGETS falco DESTINATION ${FALCO_BIN_DIR})
-install(
-  DIRECTORY lua
-  DESTINATION ${FALCO_SHARE_DIR}
-  FILES_MATCHING
-  PATTERN *.lua)

userspace/falco/config_falco.h.in

@@ -25,11 +25,9 @@ limitations under the License.
 #define FALCO_VERSION_PRERELEASE "@FALCO_VERSION_PRERELEASE@"
 #define FALCO_VERSION_BUILD "@FALCO_VERSION_BUILD@"
 
-#define FALCO_LUA_DIR "${CMAKE_INSTALL_PREFIX}/${FALCO_SHARE_DIR}/lua/"
 #define FALCO_SOURCE_DIR "${PROJECT_SOURCE_DIR}"
 #define FALCO_SOURCE_CONF_FILE "${PROJECT_SOURCE_DIR}/falco.yaml"
 #define FALCO_INSTALL_CONF_FILE "/etc/falco/falco.yaml"
-#define FALCO_SOURCE_LUA_DIR "${PROJECT_SOURCE_DIR}/userspace/falco/lua/"
 
 #define PROBE_NAME "@PROBE_NAME@"
 #define DRIVER_VERSION "@PROBE_VERSION@"

userspace/falco/configuration.cpp

@@ -52,7 +52,7 @@ void falco_configuration::init(list<string> &cmdline_options)
 {
 	init_cmdline_options(cmdline_options);
 
-	falco_outputs::output_config stdout_output;
+	falco::outputs::config stdout_output;
 	stdout_output.name = "stdout";
 	m_outputs.push_back(stdout_output);
 }
@@ -81,7 +81,7 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
 	m_json_output = m_config->get_scalar<bool>("json_output", false);
 	m_json_include_output_property = m_config->get_scalar<bool>("json_include_output_property", true);
 
-	falco_outputs::output_config file_output;
+	falco::outputs::config file_output;
 	file_output.name = "file";
 	if(m_config->get_scalar<bool>("file_output", "enabled", false))
 	{
@@ -99,21 +99,21 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
 		m_outputs.push_back(file_output);
 	}
 
-	falco_outputs::output_config stdout_output;
+	falco::outputs::config stdout_output;
 	stdout_output.name = "stdout";
 	if(m_config->get_scalar<bool>("stdout_output", "enabled", false))
 	{
 		m_outputs.push_back(stdout_output);
 	}
 
-	falco_outputs::output_config syslog_output;
+	falco::outputs::config syslog_output;
 	syslog_output.name = "syslog";
 	if(m_config->get_scalar<bool>("syslog_output", "enabled", false))
 	{
 		m_outputs.push_back(syslog_output);
 	}
 
-	falco_outputs::output_config program_output;
+	falco::outputs::config program_output;
 	program_output.name = "program";
 	if(m_config->get_scalar<bool>("program_output", "enabled", false))
 	{
@@ -131,7 +131,7 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
 		m_outputs.push_back(program_output);
 	}
 
-	falco_outputs::output_config http_output;
+	falco::outputs::config http_output;
 	http_output.name = "http";
 	if(m_config->get_scalar<bool>("http_output", "enabled", false))
 	{
@@ -159,7 +159,7 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
 	m_grpc_cert_chain = m_config->get_scalar<string>("grpc", "cert_chain", "/etc/falco/certs/server.crt");
 	m_grpc_root_certs = m_config->get_scalar<string>("grpc", "root_certs", "/etc/falco/certs/ca.crt");
 
-	falco_outputs::output_config grpc_output;
+	falco::outputs::config grpc_output;
 	grpc_output.name = "grpc";
 	// gRPC output is enabled only if gRPC server is enabled too
 	if(m_config->get_scalar<bool>("grpc_output", "enabled", true) && m_grpc_enabled)

userspace/falco/configuration.h

@@ -37,7 +37,7 @@ public:
 	{
 		m_path = path;
 		YAML::Node config;
-		std::vector<falco_outputs::output_config> outputs;
+		std::vector<falco::outputs::config> outputs;
 		try
 		{
 			m_root = YAML::LoadFile(path);
@@ -196,7 +196,7 @@ public:
 	bool m_json_output;
 	bool m_json_include_output_property;
 	std::string m_log_level;
-	std::vector<falco_outputs::output_config> m_outputs;
+	std::vector<falco::outputs::config> m_outputs;
 	uint32_t m_notifications_rate;
 	uint32_t m_notifications_max_burst;
 

userspace/falco/event_drops.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 #include "event_drops.h"
+#include "falco_common.h"
 #include "banned.h" // This raises a compilation error when certain functions are used
 
 syscall_evt_drop_mgr::syscall_evt_drop_mgr():
@@ -137,7 +138,7 @@ bool syscall_evt_drop_mgr::perform_actions(uint64_t now, scap_stats &delta, bool
 
 		case ACT_ALERT:
 			m_outputs->handle_msg(now,
-					      falco_outputs::PRIORITY_CRITICAL,
+					      falco_common::PRIORITY_CRITICAL,
 					      msg,
 					      rule,
 					      output_fields);

userspace/falco/falco.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -30,21 +30,25 @@ limitations under the License.
 #include <sys/stat.h>
 #include <unistd.h>
 #include <getopt.h>
+#include <condition_variable>
+#include <chrono>
 
 #include <sinsp.h>
 
 #include "logger.h"
 #include "utils.h"
 #include "chisel.h"
-#include "sysdig.h"
+#include "fields_info.h"
 
 #include "event_drops.h"
 #include "configuration.h"
 #include "falco_engine.h"
 #include "config_falco.h"
 #include "statsfilewriter.h"
+#ifndef MINIMAL_BUILD
 #include "webserver.h"
 #include "grpc_server.h"
+#endif
 #include "banned.h" // This raises a compilation error when certain functions are used
 
 typedef function<void(sinsp* inspector)> open_t;
@@ -84,6 +88,7 @@ static void usage()
 	   " -h, --help                    Print this page\n"
 	   " -c                            Configuration file (default " FALCO_SOURCE_CONF_FILE ", " FALCO_INSTALL_CONF_FILE ")\n"
 	   " -A                            Monitor all events, including those with EF_DROP_SIMPLE_CONS flag.\n"
+	   " --alternate-lua-dir <path>    Specify an alternate path for loading Falco lua files\n"
 	   " -b, --print-base64            Print data buffers in base64.\n"
 	   "                               This is useful for encoding binary data that needs to be used over media designed to.\n"
 	   " --cri <path>                  Path to CRI socket for container metadata.\n"
@@ -104,6 +109,7 @@ static void usage()
 	   "                               Can not be specified with -t.\n"
 	   " -e <events_file>              Read the events from <events_file> (in .scap format for sinsp events, or jsonl for\n"
 	   "                               k8s audit events) instead of tapping into live.\n"
+#ifndef MINIMAL_BUILD
 	   " -k <url>, --k8s-api <url>\n"
 	   "                               Enable Kubernetes support by connecting to the API server specified as argument.\n"
        "                               E.g. \"http://admin:password@127.0.0.1:8080\".\n"
@@ -117,15 +123,18 @@ static void usage()
 	   "                               for this option, it will be interpreted as the name of a file containing bearer token.\n"
 	   "                               Note that the format of this command-line option prohibits use of files whose names contain\n"
 	   "                               ':' or '#' characters in the file name.\n"
+#endif
 	   " -L                            Show the name and description of all rules and exit.\n"
 	   " -l <rule>                     Show the name and description of the rule with name <rule> and exit.\n"
 	   " --list [<source>]             List all defined fields. If <source> is provided, only list those fields for\n"
 	   "                               the source <source>. Current values for <source> are \"syscall\", \"k8s_audit\"\n"
+#ifndef MINIMAL_BUILD
 	   " -m <url[,marathon_url]>, --mesos-api <url[,marathon_url]>\n"
 	   "                               Enable Mesos support by connecting to the API server\n"
 	   "                               specified as argument. E.g. \"http://admin:password@127.0.0.1:5050\".\n"
 	   "                               Marathon url is optional and defaults to Mesos address, port 8080.\n"
 	   "                               The API servers can also be specified via the environment variable FALCO_MESOS_API.\n"
+#endif
 	   " -M <num_seconds>              Stop collecting after <num_seconds> reached.\n"
 	   " -N                            When used with --list, only print field names.\n"
 	   " -o, --option <key>=<val>      Set the value of option <key> to <val>. Overrides values in configuration file.\n"
@@ -185,6 +194,7 @@ static void display_fatal_err(const string &msg)
 // Splitting into key=value or key.subkey=value will be handled by configuration class.
 std::list<string> cmdline_options;
 
+#ifndef MINIMAL_BUILD
 // Read a jsonl file containing k8s audit events and pass each to the engine.
 void read_k8s_audit_trace_file(falco_engine *engine,
 			       falco_outputs *outputs,
@@ -213,6 +223,7 @@ void read_k8s_audit_trace_file(falco_engine *engine,
 		}
 	}
 }
+#endif
 
 static std::string read_file(std::string filename)
 {
@@ -238,17 +249,14 @@ uint64_t do_inspect(falco_engine *engine,
 			int &result)
 {
 	uint64_t num_evts = 0;
-	int32_t rc;
-	sinsp_evt* ev;
 	StatsFileWriter writer;
-	uint64_t duration_start = 0;
 
-	sdropmgr.init(inspector,
-		      outputs,
-		      config.m_syscall_evt_drop_actions,
-		      config.m_syscall_evt_drop_rate,
-		      config.m_syscall_evt_drop_max_burst,
-		      config.m_syscall_evt_simulate_drops);
+	// sdropmgr.init(inspector,
+	// 	      outputs,
+	// 	      config.m_syscall_evt_drop_actions,
+	// 	      config.m_syscall_evt_drop_rate,
+	// 	      config.m_syscall_evt_drop_max_burst,
+	// 	      config.m_syscall_evt_simulate_drops);
 
 	if (stats_filename != "")
 	{
@@ -260,15 +268,74 @@ uint64_t do_inspect(falco_engine *engine,
 		}
 	}
 
-	//
-	// Loop through the events
-	//
+	uint32_t ndevs = inspector->get_open_ndevs();
+	std::vector<std::thread> threads(ndevs);
+	for(size_t i = 0; i < ndevs; i++)
+	{
+		threads.push_back(std::thread([inspector, engine, outputs, i, all_events] {
+			int32_t rc;
+			sinsp_evt *ev;
+			//
+			// Loop through the events
+			//
+			while(1)
+			{
+				rc = inspector->next_per_cpu(&ev, i);
+
+				// writer.handle();
+
+				if(rc == SCAP_TIMEOUT)
+				{
+					continue;
+				}
+				else if(rc == SCAP_EOF)
+				{
+					break; // todo > capire
+				}
+				else if(rc != SCAP_SUCCESS)
+				{
+					//
+					// Event read error.
+					// Notify that we're exiting, and then die with an error.
+					//
+					cerr << "rc = " << rc << endl;
+					throw sinsp_exception(inspector->getlasterr().c_str()); // TODO(leodido,fntlnz)
+				}
+
+				// if(!sdropmgr.process_event(inspector, ev))
+				// {
+				// 	result = EXIT_FAILURE;
+				// 	break;
+				// }
+
+				if(!ev->simple_consumer_consider() && !all_events)
+				{
+					continue;
+				}
+
+				// As the inspector has no filter at its level, all
+				// events are returned here. Pass them to the falco
+				// engine, which will match the event against the set
+				// of rules. If a match is found, pass the event to
+				// the outputs.
+				unique_ptr<falco_engine::rule_result> res = engine->process_sinsp_event(ev);
+				if(res)
+				{
+					outputs->handle_event(res->evt, res->rule, res->source, res->priority_num, res->format);
+				}
+
+				// num_evts++;
+			}
+		}));
+	}
+	auto deadline = std::chrono::steady_clock::now() + std::chrono::nanoseconds(duration_to_tot_ns);
+
 	while(1)
 	{
-
-		rc = inspector->next(&ev);
-
-		writer.handle();
+		if(std::chrono::steady_clock::now() >= deadline)
+		{
+			break;
+		}
 
 		if(g_reopen_outputs)
 		{
@@ -281,63 +348,19 @@ uint64_t do_inspect(falco_engine *engine,
 			falco_logger::log(LOG_INFO, "SIGINT received, exiting...\n");
 			break;
 		}
-		else if (g_restart)
+		else if(g_restart)
 		{
 			falco_logger::log(LOG_INFO, "SIGHUP received, restarting...\n");
 			break;
 		}
-		else if(rc == SCAP_TIMEOUT)
-		{
-			continue;
-		}
-		else if(rc == SCAP_EOF)
-		{
-			break;
-		}
-		else if(rc != SCAP_SUCCESS)
-		{
-			//
-			// Event read error.
-			// Notify the chisels that we're exiting, and then die with an error.
-			//
-			cerr << "rc = " << rc << endl;
-			throw sinsp_exception(inspector->getlasterr().c_str());
-		}
+	}
 
-		if (duration_start == 0)
+	for(auto &t : threads)
+	{
+		if(t.joinable())
 		{
-			duration_start = ev->get_ts();
-		} else if(duration_to_tot_ns > 0)
-		{
-			if(ev->get_ts() - duration_start >= duration_to_tot_ns)
-			{
-				break;
-			}
+			t.join();
 		}
-
-		if(!sdropmgr.process_event(inspector, ev))
-		{
-			result = EXIT_FAILURE;
-			break;
-		}
-
-		if(!ev->simple_consumer_consider() && !all_events)
-		{
-			continue;
-		}
-
-		// As the inspector has no filter at its level, all
-		// events are returned here. Pass them to the falco
-		// engine, which will match the event against the set
-		// of rules. If a match is found, pass the event to
-		// the outputs.
-		unique_ptr<falco_engine::rule_result> res = engine->process_sinsp_event(ev);
-		if(res)
-		{
-			outputs->handle_event(res->evt, res->rule, res->source, res->priority_num, res->format);
-		}
-
-		num_evts++;
 	}
 
 	return num_evts;
@@ -429,9 +452,11 @@ int falco_init(int argc, char **argv)
 	bool verbose = false;
 	bool names_only = false;
 	bool all_events = false;
+#ifndef MINIMAL_BUILD
 	string* k8s_api = 0;
 	string* k8s_api_cert = 0;
 	string* mesos_api = 0;
+#endif
 	string output_format = "";
 	uint32_t snaplen = 0;
 	bool replace_container_info = false;
@@ -461,42 +486,45 @@ int falco_init(int argc, char **argv)
 	double duration;
 	scap_stats cstats;
 
+#ifndef MINIMAL_BUILD
 	falco_webserver webserver;
 	falco::grpc::server grpc_server;
 	std::thread grpc_server_thread;
+#endif
 
 	static struct option long_options[] =
-	{
-		{"cri", required_argument, 0},
-        {"daemon", no_argument, 0, 'd'},
-        {"disable-cri-async", no_argument, 0, 0},
-        {"disable-source", required_argument, 0},
-        {"help", no_argument, 0, 'h'},
-        {"ignored-events", no_argument, 0, 'i'},
-        {"k8s-api-cert", required_argument, 0, 'K'},
-        {"k8s-api", required_argument, 0, 'k'},
-        {"list", optional_argument, 0},
-        {"mesos-api", required_argument, 0, 'm'},
-        {"option", required_argument, 0, 'o'},
-        {"pidfile", required_argument, 0, 'P'},
-        {"print-base64", no_argument, 0, 'b'},
-        {"print", required_argument, 0, 'p'},
-        {"snaplen", required_argument, 0, 'S'},
-        {"stats-interval", required_argument, 0},
-        {"support", no_argument, 0},
-        {"unbuffered", no_argument, 0, 'U'},
-        {"userspace", no_argument, 0, 'u'},
-        {"validate", required_argument, 0, 'V'},
-        {"version", no_argument, 0, 0},
-        {"writefile", required_argument, 0, 'w'},
-		{0, 0, 0, 0}
-	};
+		{
+			{"alternate-lua-dir", required_argument, 0},
+			{"cri", required_argument, 0},
+			{"daemon", no_argument, 0, 'd'},
+			{"disable-cri-async", no_argument, 0, 0},
+			{"disable-source", required_argument, 0},
+			{"help", no_argument, 0, 'h'},
+			{"ignored-events", no_argument, 0, 'i'},
+			{"k8s-api-cert", required_argument, 0, 'K'},
+			{"k8s-api", required_argument, 0, 'k'},
+			{"list", optional_argument, 0},
+			{"mesos-api", required_argument, 0, 'm'},
+			{"option", required_argument, 0, 'o'},
+			{"pidfile", required_argument, 0, 'P'},
+			{"print-base64", no_argument, 0, 'b'},
+			{"print", required_argument, 0, 'p'},
+			{"snaplen", required_argument, 0, 'S'},
+			{"stats-interval", required_argument, 0},
+			{"support", no_argument, 0},
+			{"unbuffered", no_argument, 0, 'U'},
+			{"userspace", no_argument, 0, 'u'},
+			{"validate", required_argument, 0, 'V'},
+			{"version", no_argument, 0, 0},
+			{"writefile", required_argument, 0, 'w'},
+			{0, 0, 0, 0}};
 
 	try
 	{
 		set<string> disabled_rule_substrings;
 		string substring;
 		string all_rules = "";
+		string alternate_lua_dir = FALCO_ENGINE_SOURCE_LUA_DIR;
 		set<string> disabled_rule_tags;
 		set<string> enabled_rule_tags;
 
@@ -530,8 +558,10 @@ int falco_init(int argc, char **argv)
 				break;
 			case 'e':
 				trace_filename = optarg;
+#ifndef MINIMAL_BUILD
 				k8s_api = new string();
 				mesos_api = new string();
+#endif
 				break;
 			case 'F':
 				list_flds = optarg;
@@ -539,21 +569,25 @@ int falco_init(int argc, char **argv)
 			case 'i':
 				print_ignored_events = true;
 				break;
+#ifndef MINIMAL_BUILD
 			case 'k':
 				k8s_api = new string(optarg);
 				break;
 			case 'K':
 				k8s_api_cert = new string(optarg);
 				break;
+#endif
 			case 'L':
 				describe_all_rules = true;
 				break;
 			case 'l':
 				describe_rule = optarg;
 				break;
+#ifndef MINIMAL_BUILD
 			case 'm':
 				mesos_api = new string(optarg);
 				break;
+#endif
 			case 'M':
 				duration_to_tot = atoi(optarg);
 				if(duration_to_tot <= 0)
@@ -668,6 +702,16 @@ int falco_init(int argc, char **argv)
 						disable_sources.insert(optarg);
 					}
 				}
+				else if (string(long_options[long_index].name)== "alternate-lua-dir")
+				{
+					if(optarg != NULL)
+					{
+						alternate_lua_dir = optarg;
+						if (alternate_lua_dir.back() != '/') {
+							alternate_lua_dir += '/';
+						}
+					}
+				}
 				break;
 
 			default:
@@ -703,7 +747,7 @@ int falco_init(int argc, char **argv)
 			return EXIT_SUCCESS;
 		}
 
-		engine = new falco_engine();
+		engine = new falco_engine(true, alternate_lua_dir);
 		engine->set_inspector(inspector);
 		engine->set_extra(output_format, replace_container_info);
 
@@ -732,8 +776,7 @@ int falco_init(int argc, char **argv)
 			}
 		}
 
-		outputs = new falco_outputs(engine);
-		outputs->set_inspector(inspector);
+		outputs = new falco_outputs();
 
 		// Some combinations of arguments are not allowed.
 		if (daemon && pidfilename == "") {
@@ -941,7 +984,6 @@ int falco_init(int argc, char **argv)
 			hostname = c_hostname;
 		}
 
-
 		outputs->init(config.m_json_output,
 			      config.m_json_include_output_property,
 			      config.m_notifications_rate, config.m_notifications_max_burst,
@@ -1074,6 +1116,12 @@ int falco_init(int argc, char **argv)
 
 			if(!trace_is_scap)
 			{
+#ifdef MINIMAL_BUILD
+				// Note that the webserver is not available when MINIMAL_BUILD is defined.
+				fprintf(stderr, "Cannot use k8s audit events trace file with a minimal Falco build");
+				result = EXIT_FAILURE;
+				goto exit;
+#else
 				try {
 					string line;
 					nlohmann::json j;
@@ -1098,6 +1146,7 @@ int falco_init(int argc, char **argv)
 					result = EXIT_FAILURE;
 					goto exit;
 				}
+#endif
 			}
 		}
 		else
@@ -1143,11 +1192,14 @@ int falco_init(int argc, char **argv)
 					// Try to insert the Falco kernel module
 					if(system("modprobe " PROBE_NAME " > /dev/null 2> /dev/null"))
 					{
-						falco_logger::log(LOG_ERR, "Unable to load the driver. Exiting.\n");
+						falco_logger::log(LOG_ERR, "Unable to load the driver.\n");
 					}
 					open_f(inspector);
 				}
-				rethrow_exception(current_exception());
+				else
+				{
+					rethrow_exception(current_exception());
+				}
 			}
 		}
 
@@ -1165,6 +1217,7 @@ int falco_init(int argc, char **argv)
 
 		duration = ((double)clock()) / CLOCKS_PER_SEC;
 
+#ifndef MINIMAL_BUILD
 		//
 		// Run k8s, if required
 		//
@@ -1248,12 +1301,15 @@ int falco_init(int argc, char **argv)
 				grpc_server.run();
 			});
 		}
+#endif
 
 		if(!trace_filename.empty() && !trace_is_scap)
 		{
+#ifndef MINIMAL_BUILD
 			read_k8s_audit_trace_file(engine,
 						  outputs,
 						  trace_filename);
+#endif
 		}
 		else
 		{
@@ -1299,12 +1355,14 @@ int falco_init(int argc, char **argv)
 		inspector->close();
 		engine->print_stats();
 		sdropmgr.print_stats();
+#ifndef MINIMAL_BUILD
 		webserver.stop();
 		if(grpc_server_thread.joinable())
 		{
 			grpc_server.shutdown();
 			grpc_server_thread.join();
 		}
+#endif
 	}
 	catch(exception &e)
 	{
@@ -1312,12 +1370,14 @@ int falco_init(int argc, char **argv)
 
 		result = EXIT_FAILURE;
 
+#ifndef MINIMAL_BUILD
 		webserver.stop();
 		if(grpc_server_thread.joinable())
 		{
 			grpc_server.shutdown();
 			grpc_server_thread.join();
 		}
+#endif
 	}
 
 exit:

userspace/falco/falco_outputs.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -14,7 +14,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+#ifndef MINIMAL_BUILD
 #include <google/protobuf/util/time_util.h>
+#endif
 
 #include "falco_outputs.h"
 
@@ -22,20 +24,21 @@ limitations under the License.
 
 #include "formats.h"
 #include "logger.h"
-#include "falco_outputs_queue.h"
+
+#include "outputs_file.h"
+#include "outputs_program.h"
+#include "outputs_stdout.h"
+#include "outputs_syslog.h"
+#ifndef MINIMAL_BUILD
+#include "outputs_http.h"
+#include "outputs_grpc.h"
+#endif
+
 #include "banned.h" // This raises a compilation error when certain functions are used
 
 using namespace std;
 
-const static struct luaL_reg ll_falco_outputs [] =
-{
-	{"handle_http", &falco_outputs::handle_http},
-	{"handle_grpc", &falco_outputs::handle_grpc},
-	{NULL, NULL}
-};
-
-falco_outputs::falco_outputs(falco_engine *engine):
-	m_falco_engine(engine),
+falco_outputs::falco_outputs():
 	m_initialized(false),
 	m_buffered(true),
 	m_json_output(false),
@@ -46,25 +49,11 @@ falco_outputs::falco_outputs(falco_engine *engine):
 
 falco_outputs::~falco_outputs()
 {
-	// Note: The assert()s in this destructor were previously places where
-	//       exceptions were thrown.  C++11 doesn't allow destructors to
-	//       emit exceptions; if they're thrown, they'll trigger a call
-	//       to 'terminate()'.  To maintain similar behavior, the exceptions
-	//       were replace with calls to 'assert()'
 	if(m_initialized)
 	{
-		lua_getglobal(m_ls, m_lua_output_cleanup.c_str());
-		if(!lua_isfunction(m_ls, -1))
+		for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
 		{
-			falco_logger::log(LOG_ERR, std::string("No function ") + m_lua_output_cleanup + " found. ");
-			assert(nullptr == "Missing lua cleanup function in ~falco_outputs");
-		}
-
-		if(lua_pcall(m_ls, 0, 0, 0) != 0)
-		{
-			const char *lerr = lua_tostring(m_ls, -1);
-			falco_logger::log(LOG_ERR, std::string("lua_pcall failed, err: ") + lerr);
-			assert(nullptr == "lua_pcall failed in ~falco_outputs");
+			(*it)->cleanup();
 		}
 	}
 }
@@ -74,24 +63,13 @@ void falco_outputs::init(bool json_output,
 			 uint32_t rate, uint32_t max_burst, bool buffered,
 			 bool time_format_iso_8601, string hostname)
 {
-	// The engine must have been given an inspector by now.
-	if(!m_inspector)
-	{
-		throw falco_exception("No inspector provided");
-	}
-
 	m_json_output = json_output;
 
-	falco_common::init(m_lua_main_filename.c_str(), FALCO_SOURCE_LUA_DIR);
-
-	// Note that falco_formats is added to both the lua state used
-	// by the falco engine as well as the separate lua state used
-	// by falco outputs.
-	falco_formats::init(m_inspector, m_falco_engine, m_ls, json_output, json_include_output_property);
-
-	falco_logger::init(m_ls);
-
-	luaL_openlib(m_ls, "c_outputs", ll_falco_outputs, 0);
+	// Note that falco_formats is already initialized by the engine,
+	// and the following json options are not used within the engine.
+	// So we can safely update them.
+	falco_formats::s_json_output = json_output;
+	falco_formats::s_json_include_output_property = json_include_output_property;
 
 	m_notifications_tb.init(rate, max_burst);
 
@@ -102,40 +80,47 @@ void falco_outputs::init(bool json_output,
 	m_initialized = true;
 }
 
-void falco_outputs::add_output(output_config oc)
+void falco_outputs::add_output(falco::outputs::config oc)
 {
-	uint8_t nargs = 3;
-	lua_getglobal(m_ls, m_lua_add_output.c_str());
 
-	if(!lua_isfunction(m_ls, -1))
+	falco::outputs::abstract_output *oo;
+
+	if(oc.name == "file")
 	{
-		throw falco_exception("No function " + m_lua_add_output + " found. ");
+		oo = new falco::outputs::output_file();
 	}
-	lua_pushstring(m_ls, oc.name.c_str());
-	lua_pushnumber(m_ls, (m_buffered ? 1 : 0));
-	lua_pushnumber(m_ls, (m_time_format_iso_8601 ? 1 : 0));
-
-	// If we have options, build up a lua table containing them
-	if(oc.options.size())
+	else if(oc.name == "program")
 	{
-		nargs = 4;
-		lua_createtable(m_ls, 0, oc.options.size());
-
-		for(auto it = oc.options.cbegin(); it != oc.options.cend(); ++it)
-		{
-			lua_pushstring(m_ls, (*it).second.c_str());
-			lua_setfield(m_ls, -2, (*it).first.c_str());
-		}
+		oo = new falco::outputs::output_program();
+	}
+	else if(oc.name == "stdout")
+	{
+		oo = new falco::outputs::output_stdout();
+	}
+	else if(oc.name == "syslog")
+	{
+		oo = new falco::outputs::output_syslog();
+	}
+#ifndef MINIMAL_BUILD
+	else if(oc.name == "http")
+	{
+		oo = new falco::outputs::output_http();
+	}
+	else if(oc.name == "grpc")
+	{
+		oo = new falco::outputs::output_grpc();
+	}
+#endif
+	else
+	{
+		throw falco_exception("Output not supported: " + oc.name);
 	}
 
-	if(lua_pcall(m_ls, nargs, 0, 0) != 0)
-	{
-		const char *lerr = lua_tostring(m_ls, -1);
-		throw falco_exception(string(lerr));
-	}
+	oo->init(oc, m_buffered, m_hostname);
+	m_outputs.push_back(oo);
 }
 
-void falco_outputs::handle_event(gen_event *ev, string &rule, string &source,
+void falco_outputs::handle_event(gen_event *evt, string &rule, string &source,
 				 falco_common::priority_type priority, string &format)
 {
 	if(!m_notifications_tb.claim())
@@ -144,29 +129,46 @@ void falco_outputs::handle_event(gen_event *ev, string &rule, string &source,
 		return;
 	}
 
-	std::lock_guard<std::mutex> guard(m_ls_semaphore);
-	lua_getglobal(m_ls, m_lua_output_event.c_str());
-
-	if(lua_isfunction(m_ls, -1))
+	string sformat;
+	if(source == "syscall")
 	{
-		lua_pushlightuserdata(m_ls, ev);
-		lua_pushstring(m_ls, rule.c_str());
-		lua_pushstring(m_ls, source.c_str());
-		lua_pushstring(m_ls, falco_common::priority_names[priority].c_str());
-		lua_pushnumber(m_ls, priority);
-		lua_pushstring(m_ls, format.c_str());
-		lua_pushstring(m_ls, m_hostname.c_str());
-
-		if(lua_pcall(m_ls, 7, 0, 0) != 0)
+		if(m_time_format_iso_8601)
 		{
-			const char *lerr = lua_tostring(m_ls, -1);
-			string err = "Error invoking function output: " + string(lerr);
-			throw falco_exception(err);
+			sformat = "*%evt.time.iso8601: " + falco_common::priority_names[priority];
+		}
+		else
+		{
+			sformat = "*%evt.time: " + falco_common::priority_names[priority];
 		}
 	}
 	else
 	{
-		throw falco_exception("No function " + m_lua_output_event + " found in lua compiler module");
+		if(m_time_format_iso_8601)
+		{
+			sformat = "*%jevt.time.iso8601: " + falco_common::priority_names[priority];
+		}
+		else
+		{
+			sformat = "*%jevt.time: " + falco_common::priority_names[priority];
+		}
+	}
+
+	// if format starts with a *, remove it, as we added our own prefix
+	if(format[0] == '*')
+	{
+		sformat += " " + format.substr(1, format.length() - 1);
+	}
+	else
+	{
+		sformat += " " + format;
+	}
+
+	string msg;
+	msg = falco_formats::format_event(evt, rule, source, falco_common::priority_names[priority], sformat);
+
+	for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
+	{
+		(*it)->output_event(evt, rule, source, priority, sformat, msg);
 	}
 }
 
@@ -194,7 +196,7 @@ void falco_outputs::handle_msg(uint64_t now,
 		iso8601evttime += time_ns;
 
 		jmsg["output"] = msg;
-		jmsg["priority"] = "Critical";
+		jmsg["priority"] = falco_common::priority_names[priority];
 		jmsg["rule"] = rule;
 		jmsg["time"] = iso8601evttime;
 		jmsg["output_fields"] = output_fields;
@@ -207,7 +209,7 @@ void falco_outputs::handle_msg(uint64_t now,
 		bool first = true;
 
 		sinsp_utils::ts_to_string(now, &timestr, false, true);
-		full_msg = timestr + ": " + falco_common::priority_names[LOG_CRIT] + " " + msg + " (";
+		full_msg = timestr + ": " + falco_common::priority_names[priority] + " " + msg + " (";
 		for(auto &pair : output_fields)
 		{
 			if(first)
@@ -223,149 +225,16 @@ void falco_outputs::handle_msg(uint64_t now,
 		full_msg += ")";
 	}
 
-	std::lock_guard<std::mutex> guard(m_ls_semaphore);
-	lua_getglobal(m_ls, m_lua_output_msg.c_str());
-	if(lua_isfunction(m_ls, -1))
+	for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
 	{
-		lua_pushstring(m_ls, full_msg.c_str());
-		lua_pushstring(m_ls, falco_common::priority_names[priority].c_str());
-		lua_pushnumber(m_ls, priority);
-
-		if(lua_pcall(m_ls, 3, 0, 0) != 0)
-		{
-			const char *lerr = lua_tostring(m_ls, -1);
-			string err = "Error invoking function output: " + string(lerr);
-			throw falco_exception(err);
-		}
-	}
-	else
-	{
-		throw falco_exception("No function " + m_lua_output_msg + " found in lua compiler module");
+		(*it)->output_msg(priority, full_msg);
 	}
 }
 
 void falco_outputs::reopen_outputs()
 {
-	lua_getglobal(m_ls, m_lua_output_reopen.c_str());
-	if(!lua_isfunction(m_ls, -1))
+	for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
 	{
-		throw falco_exception("No function " + m_lua_output_reopen + " found. ");
-	}
-
-	if(lua_pcall(m_ls, 0, 0, 0) != 0)
-	{
-		const char *lerr = lua_tostring(m_ls, -1);
-		throw falco_exception(string(lerr));
+		(*it)->reopen();
 	}
 }
-
-int falco_outputs::handle_http(lua_State *ls)
-{
-	CURL *curl = NULL;
-	CURLcode res = CURLE_FAILED_INIT;
-	struct curl_slist *slist1;
-	slist1 = NULL;
-
-	if(!lua_isstring(ls, -1) ||
-	   !lua_isstring(ls, -2))
-	{
-		lua_pushstring(ls, "Invalid arguments passed to handle_http()");
-		lua_error(ls);
-	}
-
-	string url = (char *)lua_tostring(ls, 1);
-	string msg = (char *)lua_tostring(ls, 2);
-
-	curl = curl_easy_init();
-	if(curl)
-	{
-		slist1 = curl_slist_append(slist1, "Content-Type: application/json");
-		curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist1);
-		curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
-		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, msg.c_str());
-		curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, -1L);
-
-		res = curl_easy_perform(curl);
-
-		if(res != CURLE_OK)
-		{
-			falco_logger::log(LOG_ERR, "libcurl error: " + string(curl_easy_strerror(res)));
-		}
-		curl_easy_cleanup(curl);
-		curl = NULL;
-		curl_slist_free_all(slist1);
-		slist1 = NULL;
-	}
-	return 1;
-}
-
-int falco_outputs::handle_grpc(lua_State *ls)
-{
-	// check parameters
-	if(!lua_islightuserdata(ls, -8) ||
-	   !lua_isstring(ls, -7) ||
-	   !lua_isstring(ls, -6) ||
-	   !lua_isstring(ls, -5) ||
-	   !lua_isstring(ls, -4) ||
-	   !lua_istable(ls, -3) ||
-	   !lua_isstring(ls, -2) ||
-	   !lua_istable(ls, -1))
-	{
-		lua_pushstring(ls, "Invalid arguments passed to handle_grpc()");
-		lua_error(ls);
-	}
-
-	falco::outputs::response grpc_res;
-
-	// time
-	gen_event *evt = (gen_event *)lua_topointer(ls, 1);
-	auto timestamp = grpc_res.mutable_time();
-	*timestamp = google::protobuf::util::TimeUtil::NanosecondsToTimestamp(evt->get_ts());
-
-	// rule
-	auto rule = grpc_res.mutable_rule();
-	*rule = (char *)lua_tostring(ls, 2);
-
-	// source
-	falco::schema::source s = falco::schema::source::SYSCALL;
-	string sstr = (char *)lua_tostring(ls, 3);
-	if(!falco::schema::source_Parse(sstr, &s))
-	{
-		lua_pushstring(ls, "Unknown source passed to to handle_grpc()");
-		lua_error(ls);
-	}
-	grpc_res.set_source(s);
-
-	// priority
-	falco::schema::priority p = falco::schema::priority::EMERGENCY;
-	string pstr = (char *)lua_tostring(ls, 4);
-	if(!falco::schema::priority_Parse(pstr, &p))
-	{
-		lua_pushstring(ls, "Unknown priority passed to to handle_grpc()");
-		lua_error(ls);
-	}
-	grpc_res.set_priority(p);
-
-	// output
-	auto output = grpc_res.mutable_output();
-	*output = (char *)lua_tostring(ls, 5);
-
-	// output fields
-	auto &fields = *grpc_res.mutable_output_fields();
-
-	lua_pushnil(ls); // so that lua_next removes it from stack and puts (k, v) on it
-	while(lua_next(ls, 6) != 0)
-	{
-		fields[lua_tostring(ls, -2)] = lua_tostring(ls, -1);
-		lua_pop(ls, 1); // remove value, keep key for lua_next
-	}
-	lua_pop(ls, 1); // pop table
-
-	// hostname
-	auto host = grpc_res.mutable_hostname();
-	*host = (char *)lua_tostring(ls, 7);
-
-	falco::outputs::queue::get().push(grpc_res);
-
-	return 1;
-}

userspace/falco/falco_outputs.h

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -19,50 +19,36 @@ limitations under the License.
 #include <memory>
 #include <map>
 
-extern "C" {
-#include "lua.h"
-#include "lualib.h"
-#include "lauxlib.h"
-}
-
 #include "gen_filter.h"
 #include "json_evt.h"
 #include "falco_common.h"
 #include "token_bucket.h"
 #include "falco_engine.h"
+#include "outputs.h"
 
 //
 // This class acts as the primary interface between a program and the
 // falco output engine. The falco rules engine is implemented by a
 // separate class falco_engine.
 //
-
-class falco_outputs : public falco_common
+class falco_outputs
 {
 public:
-	falco_outputs(falco_engine *engine);
+	falco_outputs();
 	virtual ~falco_outputs();
 
-	// The way to refer to an output (file, syslog, stdout, etc.)
-	// An output has a name and set of options.
-	struct output_config
-	{
-		std::string name;
-		std::map<std::string, std::string> options;
-	};
-
 	void init(bool json_output,
 		  bool json_include_output_property,
 		  uint32_t rate, uint32_t max_burst, bool buffered,
 		  bool time_format_iso_8601, std::string hostname);
 
-	void add_output(output_config oc);
+	void add_output(falco::outputs::config oc);
 
 	//
-	// ev is an event that has matched some rule. Pass the event
+	// evt is an event that has matched some rule. Pass the event
 	// to all configured outputs.
 	//
-	void handle_event(gen_event *ev, std::string &rule, std::string &source,
+	void handle_event(gen_event *evt, std::string &rule, std::string &source,
 			  falco_common::priority_type priority, std::string &format);
 
 	// Send a generic message to all outputs. Not necessarily associated with any event.
@@ -70,19 +56,15 @@ public:
 			falco_common::priority_type priority,
 			std::string &msg,
 			std::string &rule,
-			std::map<std::string,std::string> &output_fields);
+			std::map<std::string, std::string> &output_fields);
 
 	void reopen_outputs();
 
-	static int handle_http(lua_State *ls);
-	static int handle_grpc(lua_State *ls);
-
 private:
-
-	falco_engine *m_falco_engine;
-
 	bool m_initialized;
 
+	std::vector<falco::outputs::abstract_output *> m_outputs;
+
 	// Rate limits notifications
 	token_bucket m_notifications_tb;
 
@@ -90,11 +72,4 @@ private:
 	bool m_json_output;
 	bool m_time_format_iso_8601;
 	std::string m_hostname;
-
-	std::string m_lua_add_output = "add_output";
-	std::string m_lua_output_event = "output_event";
-	std::string m_lua_output_msg = "output_msg";
-	std::string m_lua_output_cleanup = "output_cleanup";
-	std::string m_lua_output_reopen = "output_reopen";
-	std::string m_lua_main_filename = "output.lua";
 };

userspace/falco/grpc_queue.h

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors
+Copyright (C) 2020 The Falco Authors
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -21,9 +21,9 @@ limitations under the License.
 
 namespace falco
 {
-namespace outputs
+namespace grpc
 {
-typedef tbb::concurrent_queue<response> response_cq;
+typedef tbb::concurrent_queue<outputs::response> response_cq;
 
 class queue
 {
@@ -34,12 +34,12 @@ public:
 		return instance;
 	}
 
-	bool try_pop(response& res)
+	bool try_pop(outputs::response& res)
 	{
 		return m_queue.try_pop(res);
 	}
 
-	void push(response& res)
+	void push(outputs::response& res)
 	{
 		m_queue.push(res);
 	}
@@ -56,5 +56,5 @@ public:
 	queue(queue const&) = delete;
 	void operator=(queue const&) = delete;
 };
-} // namespace output
+} // namespace grpc
 } // namespace falco

userspace/falco/grpc_server_impl.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors
+Copyright (C) 2020 The Falco Authors
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ limitations under the License.
 
 #include "config_falco.h"
 #include "grpc_server_impl.h"
-#include "falco_outputs_queue.h"
+#include "grpc_queue.h"
 #include "logger.h"
 #include "banned.h" // This raises a compilation error when certain functions are used
 
@@ -44,7 +44,7 @@ void falco::grpc::server_impl::get(const stream_context& ctx, const outputs::req
 	// m_status == stream_context::STREAMING?
 	// todo(leodido) > set m_stream
 
-	ctx.m_has_more = outputs::queue::get().try_pop(res);
+	ctx.m_has_more = queue::get().try_pop(res);
 }
 
 void falco::grpc::server_impl::sub(const bidi_context& ctx, const outputs::request& req, outputs::response& res)
@@ -61,7 +61,7 @@ void falco::grpc::server_impl::sub(const bidi_context& ctx, const outputs::reque
 	// m_status == stream_context::STREAMING?
 	// todo(leodido) > set m_stream
 
-	ctx.m_has_more = outputs::queue::get().try_pop(res);
+	ctx.m_has_more = queue::get().try_pop(res);
 }
 
 void falco::grpc::server_impl::version(const context& ctx, const version::request&, version::response& res)

userspace/falco/logger.cpp

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,25 +16,13 @@ limitations under the License.
 
 #include <ctime>
 #include "logger.h"
-#include "chisel_api.h"
 
 #include "falco_common.h"
 #include "banned.h" // This raises a compilation error when certain functions are used
 
-const static struct luaL_reg ll_falco [] =
-{
-	{"syslog", &falco_logger::syslog},
-	{NULL,NULL}
-};
-
 int falco_logger::level = LOG_INFO;
 bool falco_logger::time_format_iso_8601 = false;
 
-void falco_logger::init(lua_State *ls)
-{
-	luaL_openlib(ls, "falco", ll_falco, 0);
-}
-
 void falco_logger::set_time_format_iso_8601(bool val)
 {
 	falco_logger::time_format_iso_8601 = val;
@@ -81,19 +69,6 @@ void falco_logger::set_level(string &level)
 }
 
 
-int falco_logger::syslog(lua_State *ls) {
-	int priority = luaL_checknumber(ls, 1);
-
-	if (priority > LOG_DEBUG) {
-		return luaL_argerror(ls, 1, "falco.syslog: priority must be a number between 0 and 7");
-	}
-
-	const char *msg = luaL_checkstring(ls, 2);
-	::syslog(priority, "%s", msg);
-
-	return 0;
-}
-
 bool falco_logger::log_stderr = true;
 bool falco_logger::log_syslog = true;
 

userspace/falco/logger.h

@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2019 The Falco Authors.
+Copyright (C) 2020 The Falco Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -19,25 +19,15 @@ limitations under the License.
 #include "sinsp.h"
 #include <syslog.h>
 
-extern "C" {
-#include "lua.h"
-#include "lualib.h"
-#include "lauxlib.h"
-}
-
 class falco_logger
 {
  public:
-	static void init(lua_State *ls);
 
 	static void set_time_format_iso_8601(bool val);
 
 	// Will throw exception if level is unknown.
 	static void set_level(string &level);
 
-	// value = falco.syslog(level, message)
-	static int syslog(lua_State *ls);
-
 	static void log(int priority, const string msg);
 
 	static int level;

userspace/falco/lua/.gitignore

@@ -1 +0,0 @@
-lyaml*

userspace/falco/lua/output.lua

@@ -1,271 +0,0 @@
--- Copyright (C) 2019 The Falco 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.
---
-
-local mod = {}
-
-local outputs = {}
-
-function mod.stdout(event, rule, source, priority, priority_num, msg, format, hostname, options)
-   mod.stdout_message(priority, priority_num, msg, options)
-end
-
-function mod.stdout_message(priority, priority_num, msg, options)
-   if options.buffered == 0 then
-      io.stdout:setvbuf "no"
-   end
-   print(msg)
-end
-
-function mod.stdout_cleanup()
-   io.stdout:flush()
-end
-
--- Note: not actually closing/reopening stdout
-function mod.stdout_reopen(options)
-end
-
-function mod.file_validate(options)
-   if (not type(options.filename) == "string") then
-      error("File output needs to be configured with a valid filename")
-   end
-
-   local file, err = io.open(options.filename, "a+")
-   if file == nil then
-      error("Error with file output: " .. err)
-   end
-   file:close()
-end
-
-function mod.file_open(options)
-   if ffile == nil then
-      ffile = io.open(options.filename, "a+")
-      if options.buffered == 0 then
-         ffile:setvbuf "no"
-      end
-   end
-end
-
-function mod.file(event, rule, source, priority, priority_num, msg, format, hostname, options)
-   mod.file_message(priority, priority_num, msg, options)
-end
-
-function mod.file_message(priority, priority_num, msg, options)
-   if options.keep_alive == "true" then
-      mod.file_open(options)
-   else
-      ffile = io.open(options.filename, "a+")
-   end
-
-   ffile:write(msg, "\n")
-
-   if options.keep_alive == nil or options.keep_alive ~= "true" then
-      ffile:close()
-      ffile = nil
-   end
-end
-
-function mod.file_cleanup()
-   if ffile ~= nil then
-      ffile:flush()
-      ffile:close()
-      ffile = nil
-   end
-end
-
-function mod.file_reopen(options)
-   if options.keep_alive == "true" then
-      mod.file_cleanup()
-      mod.file_open(options)
-   end
-end
-
-function mod.syslog(event, rule, source, priority, priority_num, msg, format, hostname, options)
-   mod.syslog_message(priority, priority_num, msg, options)
-end
-
-function mod.syslog_message(priority, priority_num, msg, options)
-   falco.syslog(priority_num, msg)
-end
-
-function mod.syslog_cleanup()
-end
-
-function mod.syslog_reopen()
-end
-
-function mod.program_open(options)
-   if pfile == nil then
-      pfile = io.popen(options.program, "w")
-      if options.buffered == 0 then
-         pfile:setvbuf "no"
-      end
-   end
-end
-
-function mod.program(event, rule, source, priority, priority_num, msg, format, hostname, options)
-   mod.program_message(priority, priority_num, msg, options)
-end
-
-function mod.program_message(priority, priority_num, msg, options)
-   -- XXX Ideally we'd check that the program ran
-   -- successfully. However, the luajit we're using returns true even
-   -- when the shell can't run the program.
-
-   -- Note: options are all strings
-   if options.keep_alive == "true" then
-      mod.program_open(options)
-   else
-      pfile = io.popen(options.program, "w")
-   end
-
-   pfile:write(msg, "\n")
-
-   if options.keep_alive == nil or options.keep_alive ~= "true" then
-      pfile:close()
-      pfile = nil
-   end
-end
-
-function mod.program_cleanup()
-   if pfile ~= nil then
-      pfile:flush()
-      pfile:close()
-      pfile = nil
-   end
-end
-
-function mod.program_reopen(options)
-   if options.keep_alive == "true" then
-      mod.program_cleanup()
-      mod.program_open(options)
-   end
-end
-
-function mod.http(event, rule, source, priority, priority_num, msg, format, hostname, options)
-   mod.http_message(priority, priority_num, msg, options)
-end
-
-function mod.http_message(priority, priority_num, msg, options)
-   c_outputs.handle_http(options.url, msg)
-end
-
-function mod.http_cleanup()
-end
-
-function mod.http_reopen()
-end
-
-function mod.grpc(event, rule, source, priority, priority_num, msg, format, hostname, options)
-   fields = formats.resolve_tokens(event, source, format)
-   c_outputs.handle_grpc(event, rule, source, priority, msg, fields, hostname, options)
-end
-
-function mod.grpc_message(priority, priority_num, msg, options)
-   -- todo(fntlnz, leodido) > gRPC does not support subscribing to dropped events yet
-end
-
-
-function mod.grpc_cleanup()
-end
-
-function mod.grpc_reopen()
-end
-
-function output_event(event, rule, source, priority, priority_num, format, hostname)
-   -- If format starts with a *, remove it, as we're adding our own
-   -- prefix here.
-   if format:sub(1, 1) == "*" then
-      format = format:sub(2)
-   end
-
-   -- time_format_iso_8601 will be the same for all output channels
-   time_format_iso_8601 = 0
-
-   for index, o in ipairs(outputs) do
-      time_format_iso_8601 = o.options.time_format_iso_8601
-      break
-   end
-
-   if source == "syscall" then
-      if time_format_iso_8601 == 1 then
-         format = "*%evt.time.iso8601: " .. priority .. " " .. format
-      else
-         format = "*%evt.time: " .. priority .. " " .. format
-      end
-   else
-      if time_format_iso_8601 == 1 then
-         format = "*%jevt.time.iso8601: " .. priority .. " " .. format
-      else
-         format = "*%jevt.time: " .. priority .. " " .. format
-      end
-   end
-
-   msg = formats.format_event(event, rule, source, priority, format)
-
-   for index, o in ipairs(outputs) do
-      o.output(event, rule, source, priority, priority_num, msg, format, hostname, o.options)
-   end
-end
-
-function output_msg(msg, priority, priority_num)
-   for index, o in ipairs(outputs) do
-      o.message(priority, priority_num, msg, o.options)
-   end
-end
-
-function output_cleanup()
-   formats.free_formatters()
-   for index, o in ipairs(outputs) do
-      o.cleanup()
-   end
-end
-
-function output_reopen()
-   for index, o in ipairs(outputs) do
-      o.reopen(o.options)
-   end
-end
-
-function add_output(output_name, buffered, time_format_iso_8601, options)
-   if not (type(mod[output_name]) == "function") then
-      error("rule_loader.add_output(): invalid output_name: " .. output_name)
-   end
-
-   -- outputs can optionally define a validation function so that we don't
-   -- find out at runtime (when an event finally matches a rule!) that the options are invalid
-   if (type(mod[output_name .. "_validate"]) == "function") then
-      mod[output_name .. "_validate"](options)
-   end
-
-   if options == nil then
-      options = {}
-   end
-
-   options.buffered = buffered
-   options.time_format_iso_8601 = time_format_iso_8601
-
-   table.insert(
-      outputs,
-      {
-         output = mod[output_name],
-         cleanup = mod[output_name .. "_cleanup"],
-         reopen = mod[output_name .. "_reopen"],
-         message = mod[output_name .. "_message"],
-         options = options
-      }
-   )
-end
-
-return mod

userspace/falco/lua/test.lua

@@ -1,44 +0,0 @@
--- Copyright (C) 2019 The Falco 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.
---
-
-local parser = require "parser"
-
-if #arg ~= 1 then
-    print("Usage: test.lua <string>")
-    os.exit(1)
-end
-
-local macros = {}
-local ast
-
-local function doit(line)
-   ast = parser.parse_filter(line)
-
-   if not ast then
-      print("error", error_msg)
-      os.exit(1)
-   end
-
-end
-for str in string.gmatch(arg[1], "([^;]+)") do
-   doit(str)
-end
-
-if (ast and ast.type) then
-   parser.print_ast(ast)
-end
-
-os.exit(0)
-

userspace/falco/outputs.h

@@ -0,0 +1,73 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include <string>
+#include <map>
+
+#include "falco_common.h"
+#include "gen_filter.h"
+
+namespace falco
+{
+namespace outputs
+{
+
+//
+// The way to refer to an output (file, syslog, stdout, etc.)
+// An output has a name and set of options.
+//
+struct config
+{
+	std::string name;
+	std::map<std::string, std::string> options;
+};
+
+//
+// This class acts as the primary interface for implementing
+// a Falco output class.
+//
+
+class abstract_output
+{
+public:
+	void init(config oc, bool buffered, std::string hostname)
+	{
+		m_oc = oc;
+		m_buffered = buffered;
+		m_hostname = hostname;
+	}
+
+	// Output an event that has matched some rule.
+	virtual void output_event(gen_event *evt, std::string &rule, std::string &source,
+				  falco_common::priority_type priority, std::string &format, std::string &msg) = 0;
+
+	// Output a generic message. Not necessarily associated with any event.
+	virtual void output_msg(falco_common::priority_type priority, std::string &msg) = 0;
+
+	virtual void reopen() {}
+
+	virtual void cleanup() {}
+
+protected:
+	config m_oc;
+	bool m_buffered;
+	std::string m_hostname;
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/outputs_file.cpp

@@ -0,0 +1,63 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#include "outputs_file.h"
+#include <iostream>
+#include <fstream>
+#include "banned.h" // This raises a compilation error when certain functions are used
+
+void falco::outputs::output_file::open_file()
+{
+	if(!m_buffered)
+	{
+		m_outfile.rdbuf()->pubsetbuf(0, 0);
+	}
+	if(!m_outfile.is_open())
+	{
+		m_outfile.open(m_oc.options["filename"], fstream::app);
+	}
+}
+
+void falco::outputs::output_file::output_event(gen_event *evt, std::string &rule, std::string &source,
+					       falco_common::priority_type priority, std::string &format, std::string &msg)
+{
+	output_msg(priority, msg);
+}
+
+void falco::outputs::output_file::output_msg(falco_common::priority_type priority, std::string &msg)
+{
+	open_file();
+	m_outfile << msg + "\n";
+
+	if(m_oc.options["keep_alive"] != "true")
+	{
+		cleanup();
+	}
+}
+
+void falco::outputs::output_file::cleanup()
+{
+	if(m_outfile.is_open())
+	{
+		m_outfile.close();
+	}
+}
+
+void falco::outputs::output_file::reopen()
+{
+	cleanup();
+	open_file();
+}

userspace/falco/outputs_file.h

@@ -0,0 +1,46 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include "outputs.h"
+#include <iostream>
+#include <fstream>
+
+namespace falco
+{
+namespace outputs
+{
+
+class output_file : public abstract_output
+{
+	void output_event(gen_event *evt, std::string &rule, std::string &source,
+			  falco_common::priority_type priority, std::string &format, std::string &msg);
+
+	void output_msg(falco_common::priority_type priority, std::string &msg);
+
+	void cleanup();
+
+	void reopen();
+
+private:
+	void open_file();
+
+	std::ofstream m_outfile;
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/outputs_grpc.cpp

@@ -0,0 +1,76 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#include <google/protobuf/util/time_util.h>
+#include "outputs_grpc.h"
+#include "grpc_queue.h"
+#include "falco_common.h"
+#include "formats.h"
+#include "banned.h" // This raises a compilation error when certain functions are used
+
+void falco::outputs::output_grpc::output_event(gen_event *evt, std::string &rule, std::string &source,
+					       falco_common::priority_type priority, std::string &format,
+					       std::string &msg)
+{
+	falco::outputs::response grpc_res;
+
+	// time
+	auto timestamp = grpc_res.mutable_time();
+	*timestamp = google::protobuf::util::TimeUtil::NanosecondsToTimestamp(evt->get_ts());
+
+	// rule
+	auto r = grpc_res.mutable_rule();
+	*r = rule;
+
+	// source
+	falco::schema::source s = falco::schema::source::SYSCALL;
+	if(!falco::schema::source_Parse(source, &s))
+	{
+		throw falco_exception("Unknown source passed to output_grpc::output_event()");
+	}
+	grpc_res.set_source(s);
+
+	// priority
+	falco::schema::priority p = falco::schema::priority::EMERGENCY;
+	if(!falco::schema::priority_Parse(falco_common::priority_names[priority], &p))
+	{
+		throw falco_exception("Unknown priority passed to output_grpc::output_event()");
+	}
+	grpc_res.set_priority(p);
+
+	// output
+	auto output = grpc_res.mutable_output();
+	*output = msg;
+
+	// output fields
+	auto &fields = *grpc_res.mutable_output_fields();
+	auto resolvedTkns = falco_formats::resolve_tokens(evt, source, format);
+	for(const auto &kv : resolvedTkns)
+	{
+		fields[kv.first] = kv.second;
+	}
+
+	// hostname
+	auto host = grpc_res.mutable_hostname();
+	*host = m_hostname;
+
+	falco::grpc::queue::get().push(grpc_res);
+}
+
+void falco::outputs::output_grpc::output_msg(falco_common::priority_type priority, std::string &msg)
+{
+	// todo(fntlnz, leodido, leogr) > gRPC does not support subscribing to dropped events yet
+}

userspace/falco/outputs_grpc.h

@@ -0,0 +1,35 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include "outputs.h"
+
+namespace falco
+{
+namespace outputs
+{
+
+class output_grpc : public abstract_output
+{
+	void output_event(gen_event *evt, std::string &rule, std::string &source,
+			  falco_common::priority_type priority, std::string &format, std::string &msg);
+
+	void output_msg(falco_common::priority_type priority, std::string &msg);
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/outputs_http.cpp

@@ -0,0 +1,54 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#include "outputs_http.h"
+#include "logger.h"
+#include "banned.h" // This raises a compilation error when certain functions are used
+
+void falco::outputs::output_http::output_event(gen_event *evt, std::string &rule, std::string &source,
+					       falco_common::priority_type priority, std::string &format, std::string &msg)
+{
+	output_msg(priority, msg);
+}
+
+void falco::outputs::output_http::output_msg(falco_common::priority_type priority, std::string &msg)
+{
+	CURL *curl = NULL;
+	CURLcode res = CURLE_FAILED_INIT;
+	struct curl_slist *slist1;
+	slist1 = NULL;
+
+	curl = curl_easy_init();
+	if(curl)
+	{
+		slist1 = curl_slist_append(slist1, "Content-Type: application/json");
+		curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist1);
+		curl_easy_setopt(curl, CURLOPT_URL, m_oc.options["url"].c_str());
+		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, msg.c_str());
+		curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, -1L);
+
+		res = curl_easy_perform(curl);
+
+		if(res != CURLE_OK)
+		{
+			falco_logger::log(LOG_ERR, "libcurl error: " + string(curl_easy_strerror(res)));
+		}
+		curl_easy_cleanup(curl);
+		curl = NULL;
+		curl_slist_free_all(slist1);
+		slist1 = NULL;
+	}
+}

userspace/falco/outputs_http.h

@@ -0,0 +1,35 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include "outputs.h"
+
+namespace falco
+{
+namespace outputs
+{
+
+class output_http : public abstract_output
+{
+	void output_event(gen_event *evt, std::string &rule, std::string &source,
+			  falco_common::priority_type priority, std::string &format, std::string &msg);
+
+	void output_msg(falco_common::priority_type priority, std::string &msg);
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/outputs_program.cpp

@@ -0,0 +1,65 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#include "outputs_program.h"
+#include <stdio.h>
+#include "banned.h" // This raises a compilation error when certain functions are used
+
+void falco::outputs::output_program::open_pfile()
+{
+	if(m_pfile == nullptr)
+	{
+		m_pfile = popen(m_oc.options["program"].c_str(), "w");
+
+		if(!m_buffered)
+		{
+			setvbuf(m_pfile, NULL, _IONBF, 0);
+		}
+	}
+}
+
+void falco::outputs::output_program::output_event(gen_event *evt, std::string &rule, std::string &source,
+						  falco_common::priority_type priority, std::string &format, std::string &msg)
+{
+	output_msg(priority, msg);
+}
+
+void falco::outputs::output_program::output_msg(falco_common::priority_type priority, std::string &msg)
+{
+	open_pfile();
+
+	fprintf(m_pfile, "%s\n", msg.c_str());
+
+	if(m_oc.options["keep_alive"] != "true")
+	{
+		cleanup();
+	}
+}
+
+void falco::outputs::output_program::cleanup()
+{
+	if(m_pfile != nullptr)
+	{
+		pclose(m_pfile);
+		m_pfile = nullptr;
+	}
+}
+
+void falco::outputs::output_program::reopen()
+{
+	cleanup();
+	open_pfile();
+}

userspace/falco/outputs_program.h

@@ -0,0 +1,44 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include "outputs.h"
+
+namespace falco
+{
+namespace outputs
+{
+
+class output_program : public abstract_output
+{
+	void output_event(gen_event *evt, std::string &rule, std::string &source,
+			  falco_common::priority_type priority, std::string &format, std::string &msg);
+
+	void output_msg(falco_common::priority_type priority, std::string &msg);
+
+	void cleanup();
+
+	void reopen();
+
+private:
+	void open_pfile();
+
+	FILE *m_pfile;
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/outputs_stdout.cpp

@@ -0,0 +1,45 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#include "outputs_stdout.h"
+#include <iostream>
+#include "banned.h" // This raises a compilation error when certain functions are used
+
+void falco::outputs::output_stdout::output_event(gen_event *evt, std::string &rule, std::string &source,
+						 falco_common::priority_type priority, std::string &format, std::string &msg)
+{
+	output_msg(priority, msg);
+}
+
+void falco::outputs::output_stdout::output_msg(falco_common::priority_type priority, std::string &msg)
+{
+	//
+	// By default, the stdout stream is fully buffered or line buffered 
+	// (if the stream can be determined to refer to an interactive device, e.g. in a TTY).
+	// Just enable automatic flushing when unbuffered output is desired.
+	// Note that it is set every time since other writings to the stdout can disable it.
+	//
+	if(!m_buffered)
+	{
+		std::cout << std::unitbuf;
+	}
+	std::cout << msg + "\n";
+}
+
+void falco::outputs::output_stdout::cleanup()
+{
+	std::cout.flush();
+}

userspace/falco/outputs_stdout.h

@@ -0,0 +1,37 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include "outputs.h"
+
+namespace falco
+{
+namespace outputs
+{
+
+class output_stdout : public abstract_output
+{
+	void output_event(gen_event *evt, std::string &rule, std::string &source,
+			  falco_common::priority_type priority, std::string &format, std::string &msg);
+
+	void output_msg(falco_common::priority_type priority, std::string &msg);
+
+	void cleanup();
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/outputs_syslog.cpp

@@ -0,0 +1,31 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#include "outputs_syslog.h"
+#include <syslog.h>
+#include "banned.h" // This raises a compilation error when certain functions are used
+
+void falco::outputs::output_syslog::output_event(gen_event *evt, std::string &rule, std::string &source,
+						 falco_common::priority_type priority, std::string &format, std::string &msg)
+{
+	output_msg(priority, msg);
+}
+
+void falco::outputs::output_syslog::output_msg(falco_common::priority_type priority, std::string &msg)
+{
+	// Syslog output should not have any trailing newline
+	::syslog(priority, "%s", msg.c_str());
+}

userspace/falco/outputs_syslog.h

@@ -0,0 +1,35 @@
+/*
+Copyright (C) 2020 The Falco 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.
+*/
+
+#pragma once
+
+#include "outputs.h"
+
+namespace falco
+{
+namespace outputs
+{
+
+class output_syslog : public abstract_output
+{
+	void output_event(gen_event *evt, std::string &rule, std::string &source,
+			  falco_common::priority_type priority, std::string &format, std::string &msg);
+
+	void output_msg(falco_common::priority_type priority, std::string &msg);
+};
+
+} // namespace outputs
+} // namespace falco

userspace/falco/verify_engine_fields.sh

@@ -1,19 +1,12 @@
-#!/bin/sh
+#!/bin/env/bash
 
 set -euo pipefail
 
 SOURCE_DIR=$1
-OPENSSL=$2
 
-if ! command -v "${OPENSSL}" version > /dev/null 2>&1; then
-    echo "No openssl command at ${OPENSSL}"
-    exit 1
-fi
-
-NEW_CHECKSUM=$(./falco --list -N | ${OPENSSL} dgst -sha256 | awk '{print $2}')
+NEW_CHECKSUM=$(./falco --list -N | sha256sum | awk '{print $1}')
 CUR_CHECKSUM=$(grep FALCO_FIELDS_CHECKSUM "${SOURCE_DIR}/userspace/engine/falco_engine_version.h" | awk '{print $3}' | sed -e 's/"//g')
 
-
 if [ "$NEW_CHECKSUM" != "$CUR_CHECKSUM" ]; then
     echo "Set of fields supported has changed (new checksum $NEW_CHECKSUM != old checksum $CUR_CHECKSUM)."
     echo "Update checksum and/or version in falco_engine_version.h."