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2 Commits

Author SHA1 Message Date
Leonardo Grasso
7637ccd7a8 update(scripts): update Falco description
Signed-off-by: Leonardo Grasso <me@leonardograsso.com>
2020-08-25 11:28:11 +02:00
Leonardo Grasso
40635ab620 fix(scripts): run modprobe before starting Falco
Signed-off-by: Leonardo Grasso <me@leonardograsso.com>
2020-08-25 11:24:12 +02:00
74 changed files with 1689 additions and 2921 deletions

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@@ -1,85 +1,5 @@
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":
@@ -282,21 +202,6 @@ jobs:
- run:
name: Execute integration tests
command: /usr/bin/entrypoint test
"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
"tests/driver-loader/integration":
machine:
image: ubuntu-1604:202004-01
@@ -306,33 +211,6 @@ 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:
@@ -389,34 +267,10 @@ 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-${FALCO_VERSION}-x86_64.rpm falcosecurity/rpm-dev/falco/${FALCO_VERSION} --user poiana --key ${BINTRAY_SECRET} --publish --override
- run:
name: Publish bin-dev
name: Publish tgz-dev
command: |
FALCO_VERSION=$(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 ${BINTRAY_SECRET} -r deb-dev
FALCO_VERSION=$(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 ${BINTRAY_SECRET} --publish --override
# Publish docker packages
"publish/docker-dev":
docker:
@@ -473,10 +327,10 @@ jobs:
FALCO_VERSION=$(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 ${BINTRAY_SECRET} --publish --override
- run:
name: Publish bin
name: Publish tgz
command: |
FALCO_VERSION=$(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 ${BINTRAY_SECRET} --publish --override
FALCO_VERSION=$(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
# Publish docker packages
"publish/docker":
docker:
@@ -518,8 +372,6 @@ workflows:
version: 2
build_and_test:
jobs:
- "build/musl"
- "build/minimal"
- "build/ubuntu-focal"
- "build/ubuntu-focal-debug"
- "build/ubuntu-bionic"
@@ -529,9 +381,6 @@ workflows:
- "tests/integration":
requires:
- "build/centos7"
- "tests/integration-static":
requires:
- "build/musl"
- "tests/driver-loader/integration":
requires:
- "build/centos7"
@@ -553,16 +402,6 @@ 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:
@@ -573,15 +412,8 @@ 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:
@@ -600,7 +432,6 @@ workflows:
- "publish/packages":
context: falco
requires:
- "build/musl"
- "rpm/sign"
filters:
tags:

2
.gitignore vendored
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@@ -11,6 +11,8 @@ 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

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

View File

@@ -1,93 +1,6 @@
# Change Log
## 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)
This file documents all notable changes to Falco. The release numbering uses [semantic versioning](http://semver.org).
## v0.24.0

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@@ -16,8 +16,6 @@ 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
@@ -52,15 +50,7 @@ else()
endif()
message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
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 -pg -ggdb ${DRAIOS_FEATURE_FLAGS} ${MINIMAL_BUILD_FLAGS} ${MUSL_FLAGS}")
set(CMAKE_COMMON_FLAGS "-Wall -ggdb ${DRAIOS_FEATURE_FLAGS}")
if(BUILD_WARNINGS_AS_ERRORS)
set(CMAKE_SUPPRESSED_WARNINGS
@@ -123,8 +113,8 @@ set(B64_INCLUDE "${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"
URL "https://github.com/libb64/libb64/archive/v1.2.1.zip"
URL_HASH "SHA256=665134c2b600098a7ebd3d00b6a866cb34909a6d48e0e37a0eda226a4ad2638a"
CONFIGURE_COMMAND ""
BUILD_COMMAND ${CMD_MAKE}
BUILD_IN_SOURCE 1
@@ -133,13 +123,11 @@ ExternalProject_Add(
# yaml-cpp
include(yaml-cpp)
if(NOT MINIMAL_BUILD)
# OpenSSL
include(OpenSSL)
# OpenSSL
include(OpenSSL)
# libcurl
include(cURL)
endif()
# libcurl
include(cURL)
# LuaJIT
set(LUAJIT_SRC "${PROJECT_BINARY_DIR}/luajit-prefix/src/luajit/src")
@@ -206,30 +194,26 @@ ExternalProject_Add(
BUILD_BYPRODUCTS ${TBB_LIB}
INSTALL_COMMAND "")
if(NOT MINIMAL_BUILD)
# civetweb
set(CIVETWEB_SRC "${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()
# 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")
#string-view-lite
include(DownloadStringViewLite)
if(NOT MINIMAL_BUILD)
# gRPC
include(gRPC)
endif()
# gRPC
include(gRPC)
# sysdig
include(sysdig)
@@ -237,13 +221,11 @@ include(sysdig)
# Installation
install(FILES falco.yaml DESTINATION "${FALCO_ETC_DIR}")
if(NOT MINIMAL_BUILD)
# Coverage
include(Coverage)
# Coverage
include(Coverage)
# Tests
add_subdirectory(test)
endif()
# Tests
add_subdirectory(test)
# Rules
add_subdirectory(rules)
@@ -254,9 +236,6 @@ 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)

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@@ -74,7 +74,7 @@ To get involved with The Falco Project please visit [the community repository](h
### Contributing
See the [CONTRIBUTING.md](https://github.com/falcosecurity/.github/blob/master/CONTRIBUTING.md).
See the [CONTRIBUTING.md](./CONTRIBUTING.md).
### Security Audit

View File

@@ -4,21 +4,19 @@ 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.
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.
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.
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
- Find the LAST release (-1) and use `YYYY-MM-DD` as the day before of the [latest release](https://github.com/falcosecurity/falco/releases)
- Let `YYYY-MM-DD` 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:>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
- 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
### 2. Milestones
@@ -30,15 +28,14 @@ Before cutting a release we need to do some homework in the Falco repository. Th
- 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)
- 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`
- Add the lastest changes on top the previous `CHANGELOG.md`
- Submit a PR with the above modifications
- Await PR approval
- Close the completed milestone as soon as the PR is merged
- Close the completed milestone as soon PR is merged
## Release
Now assume `x.y.z` is the new version.
Let `x.y.z` the new version.
### 1. Create a tag
@@ -61,45 +58,21 @@ Now assume `x.y.z` is 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!

View File

@@ -15,21 +15,6 @@ 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

View File

@@ -25,11 +25,7 @@ set(CPACK_PROJECT_CONFIG_FILE "${PROJECT_SOURCE_DIR}/cmake/cpack/CMakeCPackOptio
set(CPACK_STRIP_FILES "ON")
set(CPACK_PACKAGE_RELOCATABLE "OFF")
if(NOT CPACK_GENERATOR)
set(CPACK_GENERATOR DEB RPM TGZ)
endif()
message(STATUS "Using package generators: ${CPACK_GENERATOR}")
set(CPACK_GENERATOR DEB RPM TGZ)
set(CPACK_DEBIAN_PACKAGE_SECTION "utils")
set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64")

View File

@@ -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 "Using bundled string-view-lite in ${STRING_VIEW_LITE_INCLUDE}")
message(STATUS "Found string-view-lite: include: ${STRING_VIEW_LITE_INCLUDE}")
ExternalProject_Add(
string-view-lite

View File

@@ -96,17 +96,12 @@ 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)

View File

@@ -1,42 +0,0 @@
# 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

View File

@@ -17,9 +17,7 @@ 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
if(NOT MINIMAL_BUILD)
set(USE_BUNDLED_OPENSSL ON)
endif()
set(USE_BUNDLED_OPENSSL ON)
set(USE_BUNDLED_JQ ON)
endif()
@@ -29,8 +27,8 @@ file(MAKE_DIRECTORY ${SYSDIG_CMAKE_WORKING_DIR})
# default below In case you want to test against another sysdig version just pass the variable - ie., `cmake
# -DSYSDIG_VERSION=dev ..`
if(NOT SYSDIG_VERSION)
set(SYSDIG_VERSION "2aa88dcf6243982697811df4c1b484bcbe9488a2")
set(SYSDIG_CHECKSUM "SHA256=a737077543a6f3473ab306b424bcf7385d788149829ed1538252661b0f20d0f6")
set(SYSDIG_VERSION "ae104eb20ff0198a5dcb0c91cc36c86e7c3f25c7")
set(SYSDIG_CHECKSUM "SHA256=43d274e4ce16b0d0e4dd00aab78006c902f36070d1cbb22d12a2685134a2ae51")
endif()
set(PROBE_VERSION "${SYSDIG_VERSION}")
@@ -57,9 +55,6 @@ add_subdirectory("${SYSDIG_SOURCE_DIR}/driver" "${PROJECT_BINARY_DIR}/driver")
# Add libscap directory
add_definitions(-D_GNU_SOURCE)
add_definitions(-DHAS_CAPTURE)
if(MUSL_OPTIMIZED_BUILD)
add_definitions(-DMUSL_OPTIMIZED)
endif()
add_subdirectory("${SYSDIG_SOURCE_DIR}/userspace/libscap" "${PROJECT_BINARY_DIR}/userspace/libscap")
# Add libsinsp directory
@@ -70,8 +65,5 @@ add_dependencies(sinsp tbb b64 luajit)
set(CREATE_TEST_TARGETS OFF)
if(USE_BUNDLED_DEPS)
add_dependencies(scap jq)
if(NOT MINIMAL_BUILD)
add_dependencies(scap curl grpc)
endif()
add_dependencies(scap grpc curl jq)
endif()

View File

@@ -34,7 +34,6 @@ 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" \

View File

@@ -12,16 +12,47 @@ WORKDIR /
ADD https://bintray.com/api/ui/download/falcosecurity/${VERSION_BUCKET}/x86_64/falco-${FALCO_VERSION}-x86_64.tar.gz /
RUN tar -xvf 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 && \
rm -f falco-${FALCO_VERSION}-x86_64.tar.gz && \
mv falco-${FALCO_VERSION}-x86_64 falco && \
rm -rf falco/usr/src/falco-* falco/usr/bin/falco-driver-loader
strip falco/usr/bin/falco && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
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"]

View File

@@ -1,15 +1,12 @@
#!/usr/bin/env bash
BUILD_DIR=${BUILD_DIR:-/build}
SOURCE_DIR=${SOURCE_DIR:-/source}
SKIP_PACKAGES_TESTS=${SKIP_PACKAGES_TESTS:-false}
set -eu -o pipefail
SOURCE_DIR=/source
BUILD_DIR=/build
CMD=${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 "$BUILD_TYPE" in
@@ -50,8 +47,7 @@ case "$CMD" in
"test")
if [ -z "$FALCO_VERSION" ]; then
echo "Automatically figuring out Falco version."
FALCO_VERSION_FULL=$("$BUILD_DIR/$BUILD_TYPE/userspace/falco/falco" --version)
FALCO_VERSION=$(echo "$FALCO_VERSION_FULL" | head -n 1 | cut -d' ' -f3 | tr -d '\r')
FALCO_VERSION=$("$BUILD_DIR/$BUILD_TYPE/userspace/falco/falco" --version | head -n 1 | cut -d' ' -f3 | tr -d '\r')
echo "Falco version: $FALCO_VERSION"
fi
if [ -z "$FALCO_VERSION" ]; then
@@ -60,11 +56,9 @@ case "$CMD" in
fi
# build docker images
if [ "$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" "$FALCO_VERSION" "tar.gz"
fi
build_image "$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"
# check that source directory contains Falco
if [ ! -d "$SOURCE_DIR/falco/test" ]; then
@@ -75,14 +69,12 @@ case "$CMD" in
# run tests
echo "Running regression tests ..."
cd "$SOURCE_DIR/falco/test"
SKIP_PACKAGES_TESTS=$SKIP_PACKAGES_TESTS ./run_regression_tests.sh -d "$BUILD_DIR/$BUILD_TYPE"
./run_regression_tests.sh -d "$BUILD_DIR/$BUILD_TYPE"
# clean docker images
if [ "$SKIP_PACKAGES_TESTS" = false ] ; then
clean_image "deb"
clean_image "rpm"
clean_image "tar.gz"
fi
clean_image "deb"
clean_image "rpm"
clean_image "tar.gz"
;;
"bash")
CMD=/bin/bash

View File

@@ -28,7 +28,10 @@
# The files will be read in the order presented here, so make sure if
# you have overrides they appear in later files.
rules_file:
- /tmp/falco
- /etc/falco/falco_rules.yaml
- /etc/falco/falco_rules.local.yaml
- /etc/falco/k8s_audit_rules.yaml
- /etc/falco/rules.d
# If true, the times displayed in log messages and output messages
# will be in ISO 8601. By default, times are displayed in the local

View File

@@ -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](https://bintray.com/falcosecurity).*
*An installable artifact that is operating system specific. All packages MUST be hosted on bintray.*
**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:

View File

@@ -1,83 +0,0 @@
# 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).

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@@ -1,102 +0,0 @@
# 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.

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@@ -1,133 +0,0 @@
# Falco Drivers Storage S3
## 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 cant 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 dont 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 cant see if:
* Its 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.
* Its 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 cant 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 cant wait but dont 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 dont get confused and we can just tell them "update Falco" to get the thing working again.

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

View File

@@ -1,5 +1,5 @@
#
# Copyright (C) 2020 The Falco Authors.
# Copyright (C) 2019 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: 7
#- required_engine_version: 2
# 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 user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
output: Disallowed SSH Connection (command=%proc.cmdline connection=%fd.name user=%user.name 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 user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
output: Disallowed outbound connection destination (command=%proc.cmdline connection=%fd.name user=%user.name 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 user_loginuid=%user.loginuid container_id=%container.id image=%container.image.repository)
output: Disallowed inbound connection source (command=%proc.cmdline connection=%fd.name user=%user.name 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 user_loginuid=%user.loginuid 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 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 user_loginuid=%user.loginuid 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 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 user_loginuid=%user.loginuid command=%proc.cmdline
Cron jobs were scheduled to run (user=%user.name 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 user_loginuid=%user.loginuid, and not file=%fd.name
# container=%container.info user=%user.name user_loginuid=%user.loginuid). The output will change
# %container.info user=%user.name, and not file=%fd.name
# container=%container.info user=%user.name). 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
(spawned_process and proc.vpid=1)) and
(evt.type=execve and evt.dir=< 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
@@ -746,13 +746,6 @@
- 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)
@@ -935,12 +928,10 @@
items: [sources.list]
- list: repository_directories
items: [/etc/apt/sources.list.d, /etc/yum.repos.d, /etc/apt]
items: [/etc/apt/sources.list.d, /etc/yum.repos.d]
- macro: access_repositories
condition: (fd.directory in (repository_directories) or
(fd.name pmatch (repository_directories) and
fd.filename in (repository_files)))
condition: (fd.filename in (repository_files) or fd.directory in (repository_directories))
- macro: modify_repositories
condition: (evt.arg.newpath pmatch (repository_directories))
@@ -953,11 +944,10 @@
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 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)
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)
priority:
NOTICE
tags: [filesystem, mitre_persistence]
@@ -978,7 +968,7 @@
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 user_loginuid=%user.loginuid
File below a known binary directory opened for writing (user=%user.name
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]
@@ -1036,7 +1026,7 @@
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 user_loginuid=%user.loginuid
File below a monitored directory opened for writing (user=%user.name
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]
@@ -1059,7 +1049,7 @@
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 user_loginuid=%user.loginuid
ssh-related file/directory read by non-ssh program (user=%user.name
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]
@@ -1155,7 +1145,7 @@
- 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)
@@ -1183,10 +1173,7 @@
- macro: calico_writing_conf
condition: >
(((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)
(proc.name = calico-node and fd.name startswith /etc/calico)
- macro: prometheus_conf_writing_conf
condition: (proc.name=prometheus-conf and fd.name startswith /etc/prometheus/config_out)
@@ -1337,7 +1324,7 @@
- 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 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)"
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)"
priority: ERROR
tags: [filesystem, mitre_persistence]
@@ -1406,14 +1393,10 @@
- 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
@@ -1430,11 +1413,10 @@
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 user_loginuid=%user.loginuid 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 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]
@@ -1451,7 +1433,7 @@
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 user_loginuid=%user.loginuid
Sensitive file opened for reading by trusted program after startup (user=%user.name
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]
@@ -1493,9 +1475,7 @@
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,
google_oslogin_
)
in.proftpd, mandb, salt-minion, postgres_mgmt_binaries)
and not cmp_cp_by_passwd
and not ansible_running_python
and not proc.cmdline contains /usr/bin/mandb
@@ -1508,11 +1488,10 @@
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 user_loginuid=%user.loginuid program=%proc.name
Sensitive file opened for reading by non-trusted program (user=%user.name 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]
@@ -1575,7 +1554,7 @@
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 user_loginuid=%user.loginuid
Database-related program spawned process other than itself (user=%user.name
program=%proc.cmdline parent=%proc.pname container_id=%container.id image=%container.image.repository)
priority: NOTICE
tags: [process, database, mitre_execution]
@@ -1587,7 +1566,7 @@
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 user_loginuid=%user.loginuid command=%proc.cmdline
File below known binary directory renamed/removed (user=%user.name 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]
@@ -1599,7 +1578,7 @@
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 user_loginuid=%user.loginuid
Directory below known binary directory created (user=%user.name
command=%proc.cmdline directory=%evt.arg.path container_id=%container.id image=%container.image.repository)
priority: ERROR
tags: [filesystem, mitre_persistence]
@@ -1628,7 +1607,6 @@
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)
@@ -1644,7 +1622,7 @@
and not weaveworks_scope
and not user_known_change_thread_namespace_activities
output: >
Namespace change (setns) by unexpected program (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline
Namespace change (setns) by unexpected program (user=%user.name 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]
@@ -1790,7 +1768,7 @@
and not run_by_appdynamics
and not user_shell_container_exclusions
output: >
Shell spawned by untrusted binary (user=%user.name user_loginuid=%user.loginuid shell=%proc.name parent=%proc.pname
Shell spawned by untrusted binary (user=%user.name 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
@@ -1865,29 +1843,11 @@
# These container images are allowed to run with --privileged
- list: falco_privileged_images
items: [
docker.io/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
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
]
- macro: falco_privileged_containers
@@ -1918,7 +1878,6 @@
- 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,
@@ -1931,20 +1890,11 @@
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: [
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,
]
items: []
# Add conditions to this macro (probably in a separate file,
# overwriting this macro) to specify additional containers that are
@@ -1962,7 +1912,7 @@
and container.privileged=true
and not falco_privileged_containers
and not user_privileged_containers
output: Privileged container started (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
output: Privileged container started (user=%user.name command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
priority: INFO
tags: [container, cis, mitre_privilege_escalation, mitre_lateral_movement]
@@ -2006,7 +1956,7 @@
and sensitive_mount
and not falco_sensitive_mount_containers
and not user_sensitive_mount_containers
output: Container with sensitive mount started (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag mounts=%container.mounts)
output: Container with sensitive mount started (user=%user.name command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag mounts=%container.mounts)
priority: INFO
tags: [container, cis, mitre_lateral_movement]
@@ -2026,7 +1976,7 @@
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 user_loginuid=%user.loginuid command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
output: Container started and not in allowed list (user=%user.name command=%proc.cmdline %container.info image=%container.image.repository:%container.image.tag)
priority: WARNING
tags: [container, mitre_lateral_movement]
@@ -2041,7 +1991,7 @@
- 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 user_loginuid=%user.loginuid command=%proc.cmdline container_id=%container.id image=%container.image.repository)"
output: "System user ran an interactive command (user=%user.name command=%proc.cmdline container_id=%container.id image=%container.image.repository)"
priority: INFO
tags: [users, mitre_remote_access_tools]
@@ -2058,7 +2008,7 @@
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 user_loginuid=%user.loginuid %container.info
A shell was spawned in a container with an attached terminal (user=%user.name %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]
@@ -2134,7 +2084,7 @@
and not user_expected_system_procs_network_activity_conditions
output: >
Known system binary sent/received network traffic
(user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
(user=%user.name command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
priority: NOTICE
tags: [network, mitre_exfiltration]
@@ -2172,7 +2122,7 @@
proc.env icontains HTTP_PROXY
output: >
Program run with disallowed HTTP_PROXY environment variable
(user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline env=%proc.env parent=%proc.pname container_id=%container.id image=%container.image.repository)
(user=%user.name command=%proc.cmdline env=%proc.env parent=%proc.pname container_id=%container.id image=%container.image.repository)
priority: NOTICE
tags: [host, users]
@@ -2195,7 +2145,7 @@
and interpreted_procs)
output: >
Interpreted program received/listened for network traffic
(user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
(user=%user.name command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
priority: NOTICE
tags: [network, mitre_exfiltration]
@@ -2206,7 +2156,7 @@
and interpreted_procs)
output: >
Interpreted program performed outgoing network connection
(user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
(user=%user.name command=%proc.cmdline connection=%fd.name container_id=%container.id image=%container.image.repository)
priority: NOTICE
tags: [network, mitre_exfiltration]
@@ -2247,7 +2197,7 @@
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 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)
(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)
priority: NOTICE
tags: [network, mitre_exfiltration]
@@ -2306,7 +2256,7 @@
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 user_loginuid=%user.loginuid cur_uid=%user.uid parent=%proc.pname
Unexpected setuid call by non-sudo, non-root program (user=%user.name 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]
@@ -2335,7 +2285,7 @@
not user_known_user_management_activities
output: >
User management binary command run outside of container
(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])
(user=%user.name 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]
@@ -2359,7 +2309,7 @@
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 user_loginuid=%user.loginuid 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 command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)"
priority: ERROR
tags: [filesystem, mitre_persistence]
@@ -2425,9 +2375,9 @@
- rule: Contact K8S API Server From Container
desc: Detect attempts to contact the K8S API Server from a container
condition: >
evt.type=connect and evt.dir=< and
evt.type=connect and evt.dir=< and
(fd.typechar=4 or fd.typechar=6) and
container and
container and
not k8s_containers and
k8s_api_server and
not user_known_contact_k8s_api_server_activities
@@ -2477,7 +2427,7 @@
and not package_mgmt_ancestor_procs
and not user_known_package_manager_in_container
output: >
Package management process launched in container (user=%user.name user_loginuid=%user.loginuid
Package management process launched in container (user=%user.name
command=%proc.cmdline container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
priority: ERROR
tags: [process, mitre_persistence]
@@ -2491,7 +2441,7 @@
or proc.args contains "-c " or proc.args contains "--lua-exec"))
)
output: >
Netcat runs inside container that allows remote code execution (user=%user.name user_loginuid=%user.loginuid
Netcat runs inside container that allows remote code execution (user=%user.name
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]
@@ -2504,7 +2454,7 @@
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 user_loginuid=%user.loginuid command=%proc.cmdline parent_process=%proc.pname
Network tool launched in container (user=%user.name 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]
@@ -2524,7 +2474,7 @@
network_tool_procs and
not user_known_network_tool_activities
output: >
Network tool launched on host (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent_process=%proc.pname)
Network tool launched on host (user=%user.name command=%proc.cmdline parent_process=%proc.pname)
priority: NOTICE
tags: [network, process, mitre_discovery, mitre_exfiltration]
@@ -2560,7 +2510,7 @@
)
output: >
Grep private keys or passwords activities found
(user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline container_id=%container.id container_name=%container.name
(user=%user.name command=%proc.cmdline container_id=%container.id container_name=%container.name
image=%container.image.repository:%container.image.tag)
priority:
WARNING
@@ -2594,7 +2544,7 @@
not trusted_logging_images and
not allowed_clear_log_files
output: >
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)
Log files were tampered (user=%user.name command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
priority:
WARNING
tags: [file, mitre_defense_evasion]
@@ -2612,12 +2562,13 @@
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 user_loginuid=%user.loginuid command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
Bulk data has been removed from disk (user=%user.name command=%proc.cmdline file=%fd.name container_id=%container.id image=%container.image.repository)
priority:
WARNING
tags: [process, mitre_persistence]
- macro: modify_shell_history
- rule: Delete or rename shell history
desc: Detect shell history deletion
condition: >
(modify and (
evt.arg.name contains "bash_history" or
@@ -2631,27 +2582,14 @@
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"))
- macro: truncate_shell_history
condition: >
evt.arg.path endswith "fish_history")) or
(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 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)
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)
priority:
WARNING
tags: [process, mitre_defense_evasion]
@@ -2664,7 +2602,7 @@
((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 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)
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)
priority:
WARNING
tags: [process, mitre_defense_evasion]
@@ -2692,7 +2630,7 @@
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 user_loginuid=%user.loginuid 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 process=%proc.name
command=%proc.cmdline container_id=%container.id container_name=%container.name image=%container.image.repository:%container.image.tag)
priority:
NOTICE
@@ -2717,7 +2655,7 @@
consider_hidden_file_creation and
not user_known_create_hidden_file_activities
output: >
Hidden file or directory created (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline
Hidden file or directory created (user=%user.name 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
@@ -2729,20 +2667,12 @@
- 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
and not user_known_remote_file_copy_activities
spawned_process and container and remote_file_copy_procs
output: >
Remote file copy tool launched in container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline parent_process=%proc.pname
Remote file copy tool launched in container (user=%user.name 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]
@@ -2753,7 +2683,7 @@
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 user_loginuid=%user.loginuid command=%proc.cmdline target=%evt.arg.target linkpath=%evt.arg.linkpath parent_process=%proc.pname)
Symlinks created over senstivie files (user=%user.name command=%proc.cmdline target=%evt.arg.target linkpath=%evt.arg.linkpath parent_process=%proc.pname)
priority: NOTICE
tags: [file, mitre_exfiltration]
@@ -2876,23 +2806,24 @@
- 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 user_loginuid=%user.loginuid %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 %container.info parent=%proc.pname cmdline=%proc.cmdline image=%container.image.repository:%container.image.tag)"
priority: WARNING
tags: [container, mitre_execution]
# This rule is enabled by default.
# If you want to disable it, modify the following macro.
# 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.
- macro: consider_packet_socket_communication
condition: (always_true)
condition: (never_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 for ARP Spoofing and privilege escalation(CVE-2020-14386) by attacker.
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.
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 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)
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)
priority: NOTICE
tags: [network, mitre_discovery]
@@ -2931,7 +2862,7 @@
k8s.ns.name in (namespace_scope_network_only_subnet)
output: >
Network connection outside local subnet
(command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id
(command=%proc.cmdline connection=%fd.name user=%user.name 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
@@ -2971,7 +2902,7 @@
not fd.sport in (authorized_server_port)
output: >
Network connection outside authorized port and binary
(command=%proc.cmdline connection=%fd.name user=%user.name user_loginuid=%user.loginuid container_id=%container.id
(command=%proc.cmdline connection=%fd.name user=%user.name container_id=%container.id
image=%container.image.repository)
priority: WARNING
tags: [network]
@@ -2983,7 +2914,7 @@
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 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)
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)
priority: WARNING
# The two Container Drift rules below will fire when a new executable is created in a container.
@@ -3012,7 +2943,7 @@
((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 user_loginuid=%user.loginuid 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 command=%proc.cmdline filename=%evt.arg.filename name=%evt.arg.name mode=%evt.arg.mode event=%evt.type)
priority: ERROR
# ****************************************************************************
@@ -3028,18 +2959,9 @@
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 user_loginuid=%user.loginuid 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 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]
# Application rules have moved to application_rules.yaml. Please look
# there if you want to enable them by adding to

View File

@@ -48,9 +48,6 @@
"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
@@ -245,48 +242,20 @@
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: user_allowed_kube_namespace_image_list
items: [user_trusted_image_list]
# Only defined for backwards compatibility. Use the more specific
# allowed_kube_namespace_image_list instead.
- list: k8s_image_list
items: []
items: [k8s.gcr.io/kube-apiserver, kope/kube-apiserver-healthcheck]
- 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))
- 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))
# 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 allowed_kube_namespace_pods
condition: kevt and pod and kcreate and ka.target.namespace in (kube-system, kube-public) and not trusted_pod
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
@@ -312,8 +281,7 @@
# 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
not ka.target.name in (system:coredns, system:managed-certificate-controller)
condition: kevt and (role or clusterrole) and (kmodify or kdelete) and (ka.target.name startswith "system:") and ka.target.name!="system:coredns"
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

View File

@@ -1,61 +0,0 @@
#!/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}"

View File

@@ -21,7 +21,7 @@
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Falco syscall activity monitoring agent
# Short-Description: Falco Cloud Native runtime security
# Description: Falco is a system activity monitoring agent
# driven by system calls with support for containers.
### END INIT INFO
@@ -62,11 +62,11 @@ do_start()
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
if [ ! -d /sys/module/falco ]; then
/sbin/modprobe falco || exit 2
fi
start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
|| return 1
if [ ! -d /sys/module/falco ]; then
/sbin/modprobe falco || exit 1
fi
start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
$DAEMON_ARGS \
|| return 2

View File

@@ -143,41 +143,33 @@ 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"
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
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
else
echo "* Unable to insmod ${DRIVER_NAME} module"
DKMS_LOG="/var/lib/dkms/${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 ${DKMS_LOG}"
fi
fi
else
DKMS_LOG="/var/lib/dkms/${DRIVER_NAME}/${DRIVER_VERSION}/build/make.log"
if [ -f "${DKMS_LOG}" ]; then
echo "* Running dkms build failed, dumping ${DKMS_LOG} (with GCC ${CURRENT_GCC})"
cat "${DKMS_LOG}"
else
echo "* Running dkms build failed, couldn't find ${DKMS_LOG} (with GCC ${CURRENT_GCC})"
fi
echo "* Skipping dkms install (dkms not found)"
fi
done
fi
}
load_kernel_module_download() {

View File

@@ -1,7 +1,7 @@
#!/bin/sh
#
# Copyright (C) 2019 The Falco Authors.
# Copyright (C) 2020 The Falco Authors.
#
#
# Licensed under the Apache License, Version 2.0 (the "License");
@@ -18,10 +18,10 @@
#
#
# falco syscall monitoring agent
# Falco Cloud Native runtime security
#
# chkconfig: 2345 55 45
# description: Falco syscall monitoring agent
# description: Falco Cloud Native runtime security
#
### BEGIN INIT INFO
@@ -52,10 +52,10 @@ start() {
[ -x $exec ] || exit 5
# [ -f $config ] || exit 6
echo -n $"Starting $prog: "
daemon $exec --daemon --pidfile=$pidfile
if [ ! -d /sys/module/falco ]; then
/sbin/modprobe falco || return $?
fi
daemon $exec --daemon --pidfile=$pidfile
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile

View File

@@ -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

View File

@@ -1,42 +0,0 @@
#
# 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

View File

@@ -1,4 +1,4 @@
#!/usr/bin/env python
#!/usr/bin/env python
#
# Copyright (C) 2019 The Falco Authors.
#
@@ -31,7 +31,6 @@ from avocado.utils import process
from watchdog.observers import Observer
from watchdog.events import PatternMatchingEventHandler
class FalcoTest(Test):
def setUp(self):
@@ -50,20 +49,17 @@ 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 == '':
@@ -71,8 +67,7 @@ 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 == '':
@@ -88,18 +83,15 @@ 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 = []
@@ -126,15 +118,13 @@ 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 = []
@@ -147,8 +137,7 @@ 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:
@@ -158,8 +147,7 @@ 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:
@@ -184,11 +172,9 @@ 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")
@@ -211,33 +197,9 @@ 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://"):]
@@ -249,22 +211,21 @@ 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':
@@ -283,8 +244,7 @@ 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):
@@ -295,60 +255,50 @@ 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:
@@ -357,11 +307,9 @@ 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:
@@ -376,8 +324,7 @@ 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
@@ -394,27 +341,7 @@ 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))
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
self.fail("Falco JSON object {} does not contain property \"{}\"".format(line, attr))
def install_package(self):
@@ -433,39 +360,35 @@ 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):
@@ -475,29 +398,25 @@ 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]
@@ -509,12 +428,10 @@ 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))
@@ -525,22 +442,20 @@ 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 -format text -import-path ../userspace/falco " \
"-proto {} -plaintext -unix {} " \
"{}/{}".format(self.grpc_proto, self.grpc_address,
self.grpc_service, self.grpc_method)
cmdline = "grpcurl -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()
@@ -555,19 +470,19 @@ class FalcoTest(Test):
for exp_result in self.grpc_results:
found = False
for line in self.grpcurl_res.stdout.decode("utf-8").splitlines():
if exp_result in line:
match = re.search(exp_result, line)
if match is not None:
found = True
break
if found == False:
self.fail(
"Could not find a line with '{}' in gRPC responses (protobuf text".format(exp_result))
self.fail("Could not find a line '{}' in gRPC responses".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()
@@ -586,11 +501,9 @@ 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(
@@ -608,6 +521,7 @@ 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)
@@ -643,26 +557,22 @@ 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(
@@ -680,7 +590,6 @@ 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

View File

@@ -1,5 +1,5 @@
#
# Copyright (C) 2020 The Falco Authors.
# Copyright (C) 2016-2018 The Falco Authors..
#
# This file is part of falco.
#
@@ -652,50 +652,25 @@ trace_files: !mux
trace_file: trace_files/cat_write.scap
stdout_contains: "Warning An open was seen .cport=<NA> command=cat /dev/null."
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:
file_output:
detect: True
detect_level: WARNING
rules_file:
- rules/single_rule.yaml
conf_file: confs/file_output.yaml
trace_file: trace_files/cat_write.scap
time_iso_8601: true
output_strictly_contains:
- /tmp/falco_outputs/file_output.txt: output_files/single_rule_with_cat_write.txt
outputs:
- /tmp/falco_outputs/file_output.txt: Warning An open was seen
program_output_strict:
program_output:
detect: True
detect_level: WARNING
rules_file:
- rules/single_rule.yaml
conf_file: confs/program_output.yaml
trace_file: trace_files/cat_write.scap
time_iso_8601: true
output_strictly_contains:
- /tmp/falco_outputs/program_output.txt: output_files/single_rule_with_cat_write.txt
outputs:
- /tmp/falco_outputs/program_output.txt: Warning An open was seen
grpc_unix_socket_outputs:
detect: True
@@ -705,26 +680,13 @@ 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:
- "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: "
- "Warning An open was seen"
detect_counts:
detect: True

View File

@@ -1,8 +0,0 @@
{"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"}}

View File

@@ -1,8 +0,0 @@
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)

View File

@@ -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 user_loginuid=%user.loginuid command=%proc.cmdline connection=%fd.name)
(user=%user.name command=%proc.cmdline connection=%fd.name)
priority: INFO

View File

@@ -19,13 +19,6 @@ 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
@@ -33,7 +26,7 @@ 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-$TRACE_FILES_VERSION.zip
curl -fso "$TRACE_DIR/$TRACE.zip" https://s3.amazonaws.com/download.draios.com/falco-tests/$TRACE.zip
fi
unzip -d "$TRACE_DIR" "$TRACE_DIR/$TRACE.zip"
rm -rf "$TRACE_DIR/$TRACE.zip"
@@ -98,13 +91,7 @@ function run_tests() {
# as we're watching the return status when running avocado.
set +e
TEST_RC=0
suites=($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+=($SCRIPTDIR/falco_tests_package.yaml)
fi
for mult in "${suites[@]}"; do
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"
echo "Running $CMD"
BUILD_DIR=${OPT_BUILD_DIR} $CMD

View File

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

View File

@@ -27,42 +27,21 @@ if(USE_BUNDLED_DEPS)
add_dependencies(falco_engine libyaml)
endif()
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"
"${PROJECT_SOURCE_DIR}/userspace/libhawk")
else()
target_include_directories(
falco_engine
PUBLIC
"${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"
"${PROJECT_SOURCE_DIR}/userspace/libhawk")
endif()
target_include_directories(
falco_engine
PUBLIC
"${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")
target_link_libraries(falco_engine "${FALCO_SINSP_LIBRARY}" "${LPEG_LIB}" "${LYAML_LIB}" "${LIBYAML_LIB}")
if(DEFINED LIBHAWK_LIBRARIES)
message(STATUS "Using externally provided libhawk implementations: ${LIBHAWK_LIBRARIES}")
target_link_libraries(falco_engine ${LIBHAWK_LIBRARIES})
endif()
configure_file(config_falco_engine.h.in config_falco_engine.h)
if(DEFINED FALCO_COMPONENT)

View File

@@ -26,8 +26,7 @@ limitations under the License.
#include "formats.h"
extern "C"
{
extern "C" {
#include "lpeg.h"
#include "lyaml.h"
}
@@ -35,6 +34,7 @@ extern "C"
#include "utils.h"
#include "banned.h" // This raises a compilation error when certain functions are used
string lua_on_event = "on_event";
string lua_print_stats = "print_stats";
@@ -42,24 +42,24 @@ using namespace std;
nlohmann::json::json_pointer falco_engine::k8s_audit_time = "/stageTimestamp"_json_pointer;
falco_engine::falco_engine(bool seed_rng, const std::string &alternate_lua_dir):
m_rules(NULL), m_next_ruleset_id(0),
m_min_priority(falco_common::PRIORITY_DEBUG),
m_sampling_ratio(1), m_sampling_multiplier(0),
m_replace_container_info(false)
falco_engine::falco_engine(bool seed_rng, const std::string& alternate_lua_dir)
: m_rules(NULL), m_next_ruleset_id(0),
m_min_priority(falco_common::PRIORITY_DEBUG),
m_sampling_ratio(1), m_sampling_multiplier(0),
m_replace_container_info(false)
{
luaopen_lpeg(m_ls);
luaopen_yaml(m_ls);
m_alternate_lua_dir = alternate_lua_dir;
falco_common::init(m_lua_main_filename.c_str(), alternate_lua_dir.c_str());
falco_rules::init(m_ls);
clear_filters();
m_sinsp_rules.reset(new falco_sinsp_ruleset());
m_k8s_audit_rules.reset(new falco_ruleset());
if(seed_rng)
{
srandom((unsigned)getpid());
srandom((unsigned) getpid());
}
m_default_ruleset_id = find_ruleset_id(m_default_ruleset);
@@ -70,24 +70,15 @@ falco_engine::falco_engine(bool seed_rng, const std::string &alternate_lua_dir):
falco_engine::~falco_engine()
{
if(m_rules)
if (m_rules)
{
delete m_rules;
}
}
falco_engine *falco_engine::clone()
{
auto engine = new falco_engine(true, m_alternate_lua_dir);
engine->set_inspector(m_inspector);
engine->set_extra(m_extra, m_replace_container_info);
engine->set_min_priority(m_min_priority);
return engine;
}
uint32_t falco_engine::engine_version()
{
return (uint32_t)FALCO_ENGINE_VERSION;
return (uint32_t) FALCO_ENGINE_VERSION;
}
#define DESCRIPTION_TEXT_START 16
@@ -153,28 +144,17 @@ void falco_engine::list_fields(bool names_only)
}
}
void falco_engine::load_rules_file(const string &rules_filename, bool verbose, bool all_events)
{
ifstream is;
is.open(rules_filename);
if(!is.is_open())
{
throw falco_exception("Could not open rules filename " +
rules_filename + " " +
"for reading");
}
string rules_content((istreambuf_iterator<char>(is)),
istreambuf_iterator<char>());
load_rules(rules_content, verbose, all_events);
}
void falco_engine::load_rules(const string &rules_content, bool verbose, bool all_events)
{
uint64_t dummy;
return load_rules(rules_content, verbose, all_events, dummy);
}
void falco_engine::load_rules(const string &rules_content, bool verbose, bool all_events, uint64_t &required_engine_version)
{
// The engine must have been given an inspector by now.
if(!m_inspector)
if(! m_inspector)
{
throw falco_exception("No inspector provided");
}
@@ -186,52 +166,46 @@ void falco_engine::load_rules(const string &rules_content, bool verbose, bool al
if(!m_rules)
{
// 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;
bool json_include_output_property = false;
falco_formats::init(m_inspector, this, m_ls, json_output, json_include_output_property);
m_rules = new falco_rules(m_inspector, this, m_ls);
m_rules = new falco_rules(m_inspector,
this,
m_ls);
}
uint64_t dummy;
// m_sinsp_rules.reset(new falco_sinsp_ruleset());
// m_k8s_audit_rules.reset(new falco_ruleset());
m_rules->load_rules(rules_content, verbose, all_events, m_extra, m_replace_container_info, m_min_priority, dummy);
// 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
// formats.formatter is used, so we can unconditionally set
// json_output to false.
bool json_output = false;
bool json_include_output_property = false;
falco_formats::init(m_inspector, this, m_ls, json_output, json_include_output_property);
m_is_ready = true;
return;
//
// auto local_rules = new falco_rules(m_inspector, this, m_ls);
// try
// {
// uint64_t dummy;
// local_rules->load_rules(rules_content, verbose, all_events, m_extra, m_replace_container_info, m_min_priority, dummy);
// // m_rules = local_rules
// // std::atomic<falco_rules *> lore(m_rules);
// // std::atomic_exchange(&lore, local_rules);
// // SCHEDULE LOCAL_RULES AS NEXT RULESET
// }
// catch(const falco_exception &e)
// {
// // todo
// printf("IGNORE BECAUSE OF ERROR LOADING RULESET!\n");
// }
m_rules->load_rules(rules_content, verbose, all_events, m_extra, m_replace_container_info, m_min_priority, required_engine_version);
}
// // todo(fntlnz): not sure we want this in falco_engine
// void falco_engine::watch_rules(bool verbose, bool all_events)
// {
// hawk_watch_rules((hawk_watch_rules_cb)rules_cb, reinterpret_cast<hawk_engine *>(this));
// }
bool falco_engine::is_ready()
void falco_engine::load_rules_file(const string &rules_filename, bool verbose, bool all_events)
{
return m_is_ready;
uint64_t dummy;
return load_rules_file(rules_filename, verbose, all_events, dummy);
}
void falco_engine::load_rules_file(const string &rules_filename, bool verbose, bool all_events, uint64_t &required_engine_version)
{
ifstream is;
is.open(rules_filename);
if (!is.is_open())
{
throw falco_exception("Could not open rules filename " +
rules_filename + " " +
"for reading");
}
string rules_content((istreambuf_iterator<char>(is)),
istreambuf_iterator<char>());
load_rules(rules_content, verbose, all_events, required_engine_version);
}
void falco_engine::enable_rule(const string &substring, bool enabled, const string &ruleset)
@@ -299,7 +273,7 @@ uint64_t falco_engine::num_rules_for_ruleset(const std::string &ruleset)
uint16_t ruleset_id = find_ruleset_id(ruleset);
return m_sinsp_rules->num_rules_for_ruleset(ruleset_id) +
m_k8s_audit_rules->num_rules_for_ruleset(ruleset_id);
m_k8s_audit_rules->num_rules_for_ruleset(ruleset_id);
}
void falco_engine::evttypes_for_ruleset(std::vector<bool> &evttypes, const std::string &ruleset)
@@ -338,15 +312,15 @@ unique_ptr<falco_engine::rule_result> falco_engine::process_sinsp_event(sinsp_ev
if(lua_pcall(m_ls, 1, 3, 0) != 0)
{
const char *lerr = lua_tostring(m_ls, -1);
const char* lerr = lua_tostring(m_ls, -1);
string err = "Error invoking function output: " + string(lerr);
throw falco_exception(err);
}
res->evt = ev;
const char *p = lua_tostring(m_ls, -3);
const char *p = lua_tostring(m_ls, -3);
res->rule = p;
res->source = "syscall";
res->priority_num = (falco_common::priority_type)lua_tonumber(m_ls, -2);
res->priority_num = (falco_common::priority_type) lua_tonumber(m_ls, -2);
res->format = lua_tostring(m_ls, -1);
lua_pop(m_ls, 3);
}
@@ -360,7 +334,6 @@ unique_ptr<falco_engine::rule_result> falco_engine::process_sinsp_event(sinsp_ev
unique_ptr<falco_engine::rule_result> falco_engine::process_sinsp_event(sinsp_evt *ev)
{
// todo(leodido, fntlnz) > pass the last ruleset id
return process_sinsp_event(ev, m_default_ruleset_id);
}
@@ -372,7 +345,7 @@ unique_ptr<falco_engine::rule_result> falco_engine::process_k8s_audit_event(json
}
// All k8s audit events have the single tag "1".
if(!m_k8s_audit_rules->run((gen_event *)ev, 1, ruleset_id))
if(!m_k8s_audit_rules->run((gen_event *) ev, 1, ruleset_id))
{
return unique_ptr<struct rule_result>();
}
@@ -387,15 +360,15 @@ unique_ptr<falco_engine::rule_result> falco_engine::process_k8s_audit_event(json
if(lua_pcall(m_ls, 1, 3, 0) != 0)
{
const char *lerr = lua_tostring(m_ls, -1);
const char* lerr = lua_tostring(m_ls, -1);
string err = "Error invoking function output: " + string(lerr);
throw falco_exception(err);
}
res->evt = ev;
const char *p = lua_tostring(m_ls, -3);
const char *p = lua_tostring(m_ls, -3);
res->rule = p;
res->source = "k8s_audit";
res->priority_num = (falco_common::priority_type)lua_tonumber(m_ls, -2);
res->priority_num = (falco_common::priority_type) lua_tonumber(m_ls, -2);
res->format = lua_tostring(m_ls, -1);
lua_pop(m_ls, 3);
}
@@ -421,7 +394,7 @@ bool falco_engine::parse_k8s_audit_json(nlohmann::json &j, std::list<json_event>
{
// Note we only handle a single top level array, to
// avoid excessive recursion.
if(!parse_k8s_audit_json(item, evts, false))
if(! parse_k8s_audit_json(item, evts, false))
{
return false;
}
@@ -499,7 +472,7 @@ void falco_engine::print_stats()
{
if(lua_pcall(m_ls, 0, 0, 0) != 0)
{
const char *lerr = lua_tostring(m_ls, -1);
const char* lerr = lua_tostring(m_ls, -1);
string err = "Error invoking function print_stats: " + string(lerr);
throw falco_exception(err);
}
@@ -508,20 +481,21 @@ void falco_engine::print_stats()
{
throw falco_exception("No function " + lua_print_stats + " found in lua rule loader module");
}
}
void falco_engine::add_sinsp_filter(string &rule,
set<uint32_t> &evttypes,
set<uint32_t> &syscalls,
set<string> &tags,
sinsp_filter *filter)
sinsp_filter* filter)
{
m_sinsp_rules->add(rule, evttypes, syscalls, tags, filter);
}
void falco_engine::add_k8s_audit_filter(string &rule,
set<string> &tags,
json_event_filter *filter)
json_event_filter* filter)
{
// All k8s audit events have a single tag "1".
std::set<uint32_t> event_tags = {1};
@@ -563,8 +537,8 @@ inline bool falco_engine::should_drop_evt()
return false;
}
double coin = (random() * (1.0 / RAND_MAX));
return (coin >= (1.0 / (m_sampling_multiplier * m_sampling_ratio)));
double coin = (random() * (1.0/RAND_MAX));
return (coin >= (1.0/(m_sampling_multiplier * m_sampling_ratio)));
}
sinsp_filter_factory &falco_engine::sinsp_factory()

View File

@@ -38,11 +38,6 @@ limitations under the License.
#include "config_falco_engine.h"
#include "falco_common.h"
extern "C"
{
#include "hawk.h"
}
//
// This class acts as the primary interface between a program and the
// falco rules engine. Falco outputs (writing to files/syslog/etc) are
@@ -52,12 +47,9 @@ extern "C"
class falco_engine : public falco_common
{
public:
falco_engine(bool seed_rng = true, const std::string &alternate_lua_dir = FALCO_ENGINE_SOURCE_LUA_DIR);
falco_engine(bool seed_rng=true, const std::string& alternate_lua_dir=FALCO_ENGINE_SOURCE_LUA_DIR);
virtual ~falco_engine();
falco_engine(const falco_engine &rhs);
falco_engine *clone();
// A given engine has a version which identifies the fields
// and rules file format it supports. This version will change
// any time the code that handles rules files, expression
@@ -65,7 +57,7 @@ public:
static uint32_t engine_version();
// Print to stdout (using printf) a description of each field supported by this engine.
void list_fields(bool names_only = false);
void list_fields(bool names_only=false);
//
// Load rules either directly or from a filename.
@@ -73,8 +65,12 @@ public:
void load_rules_file(const std::string &rules_filename, bool verbose, bool all_events);
void load_rules(const std::string &rules_content, bool verbose, bool all_events);
// Watch and live-reload rules using an external ABI interface provided by libhawk
void watch_rules(bool verbose, bool all_events);
//
// Identical to above, but also returns the required engine version for the file/content.
// (If no required engine version is specified, returns 0).
//
void load_rules_file(const std::string &rules_filename, bool verbose, bool all_events, uint64_t &required_engine_version);
void load_rules(const std::string &rules_content, bool verbose, bool all_events, uint64_t &required_engine_version);
//
// Enable/Disable any rules matching the provided substring.
@@ -89,6 +85,7 @@ public:
// Wrapper that assumes the default ruleset
void enable_rule(const std::string &substring, bool enabled);
// Like enable_rule, but the rule name must be an exact match.
void enable_rule_exact(const std::string &rule_name, bool enabled, const std::string &ruleset);
@@ -157,8 +154,7 @@ public:
// **Methods Related to k8s audit log events, which are
// **represented as json objects.
struct rule_result
{
struct rule_result {
gen_event *evt;
std::string rule;
std::string source;
@@ -174,7 +170,7 @@ public:
// Returns true if the json object was recognized as a k8s
// audit event(s), false otherwise.
//
bool parse_k8s_audit_json(nlohmann::json &j, std::list<json_event> &evts, bool top = true);
bool parse_k8s_audit_json(nlohmann::json &j, std::list<json_event> &evts, bool top=true);
//
// Given an event, check it against the set of rules in the
@@ -199,7 +195,7 @@ public:
//
void add_k8s_audit_filter(std::string &rule,
std::set<std::string> &tags,
json_event_filter *filter);
json_event_filter* filter);
// **Methods Related to Sinsp Events e.g system calls
//
@@ -240,14 +236,13 @@ public:
std::set<uint32_t> &evttypes,
std::set<uint32_t> &syscalls,
std::set<std::string> &tags,
sinsp_filter *filter);
sinsp_filter* filter);
sinsp_filter_factory &sinsp_factory();
json_event_filter_factory &json_factory();
bool is_ready();
private:
static nlohmann::json::json_pointer k8s_audit_time;
//
@@ -267,8 +262,6 @@ private:
std::unique_ptr<falco_sinsp_ruleset> m_sinsp_rules;
std::unique_ptr<falco_ruleset> m_k8s_audit_rules;
std::string m_alternate_lua_dir;
//
// Here's how the sampling ratio and multiplier influence
// whether or not an event is dropped in
@@ -298,6 +291,5 @@ private:
std::string m_extra;
bool m_replace_container_info;
bool m_is_ready = false;
};

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -16,7 +16,7 @@ limitations under the License.
// The version of rules/filter fields/etc supported by this falco
// engine.
#define FALCO_ENGINE_VERSION (7)
#define FALCO_ENGINE_VERSION (6)
// This is the result of running "falco --list -N | sha256sum" and
// represents the fields supported by this version of falco. It's used

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -20,19 +20,24 @@ 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;
std::unique_ptr<sinsp_evt_formatter_cache> falco_formats::s_formatters = NULL;
sinsp_evt_formatter_cache *falco_formats::s_formatters = NULL;
const static struct luaL_reg ll_falco[] =
{
{"formatter", &falco_formats::lua_formatter},
{"free_formatter", &falco_formats::lua_free_formatter},
{NULL, 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}
};
void falco_formats::init(sinsp *inspector,
void falco_formats::init(sinsp* inspector,
falco_engine *engine,
lua_State *ls,
bool json_output,
@@ -42,14 +47,15 @@ void falco_formats::init(sinsp *inspector,
s_engine = engine;
s_json_output = json_output;
s_json_include_output_property = json_include_output_property;
// 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));
if(!s_formatters)
{
s_formatters = new sinsp_evt_formatter_cache(s_inspector);
}
luaL_openlib(ls, "formats", ll_falco, 0);
}
int falco_formats::lua_formatter(lua_State *ls)
int falco_formats::formatter(lua_State *ls)
{
string source = luaL_checkstring(ls, -2);
string format = luaL_checkstring(ls, -1);
@@ -58,7 +64,7 @@ int falco_formats::lua_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);
}
@@ -69,11 +75,11 @@ int falco_formats::lua_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());
}
@@ -81,10 +87,10 @@ int falco_formats::lua_formatter(lua_State *ls)
return 1;
}
int falco_formats::lua_free_formatter(lua_State *ls)
int falco_formats::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");
@@ -94,75 +100,115 @@ int falco_formats::lua_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;
}
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)
int falco_formats::free_formatters(lua_State *ls)
{
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.c_str(), "syscall") == 0)
if(strcmp(source, "syscall") == 0)
{
// This is "output"
s_formatters->tostring((sinsp_evt *)evt, sformat, &line);
try {
// This is "output"
s_formatters->tostring((sinsp_evt *) evt, sformat, &line);
if(s_json_output)
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)
{
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);
string err = "Invalid output format '" + sformat + "': '" + string(e.what()) + "'";
lua_pushstring(ls, err.c_str());
lua_error(ls);
}
}
else
{
json_event_formatter formatter(s_engine->json_factory(), sformat);
try {
line = formatter.tostring((json_event *)evt);
json_event_formatter formatter(s_engine->json_factory(), sformat);
if(s_json_output)
line = formatter.tostring((json_event *) evt);
if(s_json_output)
{
json_line = formatter.tojson((json_event *) evt);
}
}
catch (exception &e)
{
json_line = formatter.tojson((json_event *)evt);
string err = "Invalid output format '" + sformat + "': '" + string(e.what()) + "'";
lua_pushstring(ls, err.c_str());
lua_error(ls);
}
}
@@ -171,16 +217,15 @@ string falco_formats::format_event(const gen_event *evt, const std::string &rule
// 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));
@@ -201,9 +246,9 @@ string falco_formats::format_event(const gen_event *evt, const std::string &rule
// 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
@@ -216,12 +261,24 @@ string falco_formats::format_event(const gen_event *evt, const std::string &rule
line = full_line;
}
return line.c_str();
lua_pushstring(ls, line.c_str());
return 1;
}
map<string, string> falco_formats::resolve_tokens(const gen_event *evt, const std::string &source, const std::string &format)
int falco_formats::resolve_tokens(lua_State *ls)
{
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")
{
@@ -231,7 +288,16 @@ map<string, string> falco_formats::resolve_tokens(const gen_event *evt, const st
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);
}
return values;
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;
}

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -18,8 +18,7 @@ limitations under the License.
#include "sinsp.h"
extern "C"
{
extern "C" {
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
@@ -32,28 +31,31 @@ 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 lua_formatter(lua_State *ls);
static int formatter(lua_State *ls);
// falco.free_formatter(formatter)
static int lua_free_formatter(lua_State *ls);
static int free_formatter(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);
// falco.free_formatters()
static int free_formatters(lua_State *ls);
static map<string, string> resolve_tokens(const gen_event *evt, const std::string &source,
const std::string &format);
// formatted_string = falco.format_event(evt, formatter)
static int format_event(lua_State *ls);
static sinsp *s_inspector;
// resolve_tokens = falco.resolve_tokens(evt, formatter)
static int resolve_tokens(lua_State *ls);
static sinsp* s_inspector;
static falco_engine *s_engine;
static std::unique_ptr<sinsp_evt_formatter_cache> s_formatters;
static sinsp_evt_formatter_cache *s_formatters;
static bool s_json_output;
static bool s_json_include_output_property;
};

View File

@@ -13,155 +13,104 @@
configure_file("${SYSDIG_SOURCE_DIR}/userspace/sysdig/config_sysdig.h.in" config_sysdig.h)
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
${CMAKE_CURRENT_BINARY_DIR}/version.pb.h
${CMAKE_CURRENT_BINARY_DIR}/outputs.grpc.pb.cc
${CMAKE_CURRENT_BINARY_DIR}/outputs.grpc.pb.h
${CMAKE_CURRENT_BINARY_DIR}/outputs.pb.cc
${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})
endif()
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
${CMAKE_CURRENT_BINARY_DIR}/version.pb.h
${CMAKE_CURRENT_BINARY_DIR}/outputs.grpc.pb.cc
${CMAKE_CURRENT_BINARY_DIR}/outputs.grpc.pb.h
${CMAKE_CURRENT_BINARY_DIR}/outputs.pb.cc
${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 ${CMAKE_CURRENT_BINARY_DIR})
if(MINIMAL_BUILD)
add_executable(
falco
configuration.cpp
logger.cpp
falco_outputs.cpp
outputs_file.cpp
outputs_program.cpp
outputs_stdout.cpp
outputs_syslog.cpp
event_drops.cpp
statsfilewriter.cpp
falco.cpp
"${SYSDIG_SOURCE_DIR}/userspace/sysdig/fields_info.cpp")
else()
add_executable(
falco
configuration.cpp
logger.cpp
falco_outputs.cpp
outputs_file.cpp
outputs_grpc.cpp
outputs_http.cpp
outputs_program.cpp
outputs_stdout.cpp
outputs_syslog.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
${CMAKE_CURRENT_BINARY_DIR}/schema.pb.cc)
"${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
${CMAKE_CURRENT_BINARY_DIR}/schema.pb.cc)
add_dependencies(falco civetweb)
endif()
add_dependencies(falco string-view-lite)
add_dependencies(falco civetweb string-view-lite)
if(USE_BUNDLED_DEPS)
add_dependencies(falco yamlcpp)
endif()
if(MINIMAL_BUILD)
target_include_directories(
falco
PUBLIC
"${SYSDIG_SOURCE_DIR}/userspace/sysdig"
"${PROJECT_SOURCE_DIR}/userspace/engine"
"${PROJECT_BINARY_DIR}/userspace/falco"
"${PROJECT_BINARY_DIR}/driver/src"
"${STRING_VIEW_LITE_INCLUDE}"
"${YAMLCPP_INCLUDE_DIR}"
"${CMAKE_CURRENT_BINARY_DIR}"
"${DRAIOS_DEPENDENCIES_DIR}/yaml-${DRAIOS_YAML_VERSION}/target/include")
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
"${LIBYAML_LIB}"
"${YAMLCPP_LIB}")
else()
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}"
"${CIVETWEB_LIB}")
endif()
target_link_libraries(
falco
falco_engine
sinsp
"${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)
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()
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")
# 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()
# add_custom_target(verify_engine_fields DEPENDS verify_engine_fields.sh falco_engine.h)
# add_dependencies(verify_engine_fields falco)
install(TARGETS falco DESTINATION ${FALCO_BIN_DIR})
install(
DIRECTORY lua
DESTINATION ${FALCO_SHARE_DIR}
FILES_MATCHING
PATTERN *.lua)

View File

@@ -25,9 +25,11 @@ 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@"

View File

@@ -52,7 +52,7 @@ void falco_configuration::init(list<string> &cmdline_options)
{
init_cmdline_options(cmdline_options);
falco::outputs::config stdout_output;
falco_outputs::output_config stdout_output;
stdout_output.name = "stdout";
m_outputs.push_back(stdout_output);
}
@@ -68,10 +68,20 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
m_config->get_sequence<list<string>>(rules_files, string("rules_file"));
for(auto &file : rules_files)
{
// Here, we only include files that exist
struct stat buffer;
if(stat(file.c_str(), &buffer) == 0)
{
read_rules_file_directory(file, m_rules_filenames);
}
}
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::config file_output;
falco_outputs::output_config file_output;
file_output.name = "file";
if(m_config->get_scalar<bool>("file_output", "enabled", false))
{
@@ -89,21 +99,21 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
m_outputs.push_back(file_output);
}
falco::outputs::config stdout_output;
falco_outputs::output_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::config syslog_output;
falco_outputs::output_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::config program_output;
falco_outputs::output_config program_output;
program_output.name = "program";
if(m_config->get_scalar<bool>("program_output", "enabled", false))
{
@@ -121,7 +131,7 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
m_outputs.push_back(program_output);
}
falco::outputs::config http_output;
falco_outputs::output_config http_output;
http_output.name = "http";
if(m_config->get_scalar<bool>("http_output", "enabled", false))
{
@@ -149,7 +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::config grpc_output;
falco_outputs::output_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)
@@ -232,6 +242,69 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
m_syscall_evt_simulate_drops = m_config->get_scalar<bool>("syscall_event_drops", "simulate_drops", false);
}
void falco_configuration::read_rules_file_directory(const string &path, list<string> &rules_filenames)
{
struct stat st;
int rc = stat(path.c_str(), &st);
if(rc != 0)
{
std::cerr << "Could not get info on rules file " << path << ": " << strerror(errno) << std::endl;
exit(-1);
}
if(st.st_mode & S_IFDIR)
{
// It's a directory. Read the contents, sort
// alphabetically, and add every path to
// rules_filenames
vector<string> dir_filenames;
DIR *dir = opendir(path.c_str());
if(!dir)
{
std::cerr << "Could not get read contents of directory " << path << ": " << strerror(errno) << std::endl;
exit(-1);
}
for(struct dirent *ent = readdir(dir); ent; ent = readdir(dir))
{
string efile = path + "/" + ent->d_name;
rc = stat(efile.c_str(), &st);
if(rc != 0)
{
std::cerr << "Could not get info on rules file " << efile << ": " << strerror(errno) << std::endl;
exit(-1);
}
if(st.st_mode & S_IFREG)
{
dir_filenames.push_back(efile);
}
}
closedir(dir);
std::sort(dir_filenames.begin(),
dir_filenames.end());
for(string &ent : dir_filenames)
{
rules_filenames.push_back(ent);
}
}
else
{
// Assume it's a file and just add to
// rules_filenames. If it can't be opened/etc that
// will be reported later..
rules_filenames.push_back(path);
}
}
static bool split(const string &str, char delim, pair<string, string> &parts)
{
@@ -273,4 +346,4 @@ void falco_configuration::set_cmdline_option(const string &opt)
{
m_config->set_scalar(keyval.first, keyval.second);
}
}
}

View File

@@ -37,7 +37,7 @@ public:
{
m_path = path;
YAML::Node config;
std::vector<falco::outputs::config> outputs;
std::vector<falco_outputs::output_config> outputs;
try
{
m_root = YAML::LoadFile(path);
@@ -190,10 +190,13 @@ public:
void init(std::string conf_filename, std::list<std::string>& cmdline_options);
void init(std::list<std::string>& cmdline_options);
static void read_rules_file_directory(const string& path, list<string>& rules_filenames);
std::list<std::string> m_rules_filenames;
bool m_json_output;
bool m_json_include_output_property;
std::string m_log_level;
std::vector<falco::outputs::config> m_outputs;
std::vector<falco_outputs::output_config> m_outputs;
uint32_t m_notifications_rate;
uint32_t m_notifications_max_burst;

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -15,7 +15,6 @@ 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():
@@ -138,7 +137,7 @@ bool syscall_evt_drop_mgr::perform_actions(uint64_t now, scap_stats &delta, bool
case ACT_ALERT:
m_outputs->handle_msg(now,
falco_common::PRIORITY_CRITICAL,
falco_outputs::PRIORITY_CRITICAL,
msg,
rule,
output_fields);

File diff suppressed because it is too large Load Diff

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -14,9 +14,7 @@ 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"
@@ -24,21 +22,20 @@ limitations under the License.
#include "formats.h"
#include "logger.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 "falco_outputs_queue.h"
#include "banned.h" // This raises a compilation error when certain functions are used
using namespace std;
falco_outputs::falco_outputs():
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),
m_initialized(false),
m_buffered(true),
m_json_output(false),
@@ -49,11 +46,25 @@ falco_outputs::falco_outputs():
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)
{
for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
lua_getglobal(m_ls, m_lua_output_cleanup.c_str());
if(!lua_isfunction(m_ls, -1))
{
(*it)->cleanup();
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");
}
}
}
@@ -63,13 +74,24 @@ 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;
// 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;
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);
m_notifications_tb.init(rate, max_burst);
@@ -80,47 +102,40 @@ void falco_outputs::init(bool json_output,
m_initialized = true;
}
void falco_outputs::add_output(falco::outputs::config oc)
void falco_outputs::add_output(output_config oc)
{
uint8_t nargs = 3;
lua_getglobal(m_ls, m_lua_add_output.c_str());
falco::outputs::abstract_output *oo;
if(!lua_isfunction(m_ls, -1))
{
throw falco_exception("No function " + m_lua_add_output + " found. ");
}
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(oc.name == "file")
// If we have options, build up a lua table containing them
if(oc.options.size())
{
oo = new falco::outputs::output_file();
}
else if(oc.name == "program")
{
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);
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->init(oc, m_buffered, m_hostname);
m_outputs.push_back(oo);
if(lua_pcall(m_ls, nargs, 0, 0) != 0)
{
const char *lerr = lua_tostring(m_ls, -1);
throw falco_exception(string(lerr));
}
}
void falco_outputs::handle_event(gen_event *evt, string &rule, string &source,
void falco_outputs::handle_event(gen_event *ev, string &rule, string &source,
falco_common::priority_type priority, string &format)
{
if(!m_notifications_tb.claim())
@@ -129,46 +144,29 @@ void falco_outputs::handle_event(gen_event *evt, string &rule, string &source,
return;
}
string sformat;
if(source == "syscall")
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))
{
if(m_time_format_iso_8601)
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)
{
sformat = "*%evt.time.iso8601: " + falco_common::priority_names[priority];
}
else
{
sformat = "*%evt.time: " + falco_common::priority_names[priority];
const char *lerr = lua_tostring(m_ls, -1);
string err = "Error invoking function output: " + string(lerr);
throw falco_exception(err);
}
}
else
{
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);
throw falco_exception("No function " + m_lua_output_event + " found in lua compiler module");
}
}
@@ -196,7 +194,7 @@ void falco_outputs::handle_msg(uint64_t now,
iso8601evttime += time_ns;
jmsg["output"] = msg;
jmsg["priority"] = falco_common::priority_names[priority];
jmsg["priority"] = "Critical";
jmsg["rule"] = rule;
jmsg["time"] = iso8601evttime;
jmsg["output_fields"] = output_fields;
@@ -209,7 +207,7 @@ 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[priority] + " " + msg + " (";
full_msg = timestr + ": " + falco_common::priority_names[LOG_CRIT] + " " + msg + " (";
for(auto &pair : output_fields)
{
if(first)
@@ -225,16 +223,149 @@ void falco_outputs::handle_msg(uint64_t now,
full_msg += ")";
}
for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
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))
{
(*it)->output_msg(priority, full_msg);
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");
}
}
void falco_outputs::reopen_outputs()
{
for(auto it = m_outputs.cbegin(); it != m_outputs.cend(); ++it)
lua_getglobal(m_ls, m_lua_output_reopen.c_str());
if(!lua_isfunction(m_ls, -1))
{
(*it)->reopen();
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));
}
}
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;
}

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -19,36 +19,50 @@ 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
class falco_outputs : public falco_common
{
public:
falco_outputs();
falco_outputs(falco_engine *engine);
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(falco::outputs::config oc);
void add_output(output_config oc);
//
// evt is an event that has matched some rule. Pass the event
// ev is an event that has matched some rule. Pass the event
// to all configured outputs.
//
void handle_event(gen_event *evt, std::string &rule, std::string &source,
void handle_event(gen_event *ev, 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.
@@ -56,14 +70,18 @@ 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();
private:
bool m_initialized;
static int handle_http(lua_State *ls);
static int handle_grpc(lua_State *ls);
std::vector<falco::outputs::abstract_output *> m_outputs;
private:
falco_engine *m_falco_engine;
bool m_initialized;
// Rate limits notifications
token_bucket m_notifications_tb;
@@ -72,4 +90,11 @@ 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";
};

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors
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.
@@ -21,9 +21,9 @@ limitations under the License.
namespace falco
{
namespace grpc
namespace outputs
{
typedef tbb::concurrent_queue<outputs::response> response_cq;
typedef tbb::concurrent_queue<response> response_cq;
class queue
{
@@ -34,12 +34,12 @@ public:
return instance;
}
bool try_pop(outputs::response& res)
bool try_pop(response& res)
{
return m_queue.try_pop(res);
}
void push(outputs::response& res)
void push(response& res)
{
m_queue.push(res);
}
@@ -56,5 +56,5 @@ public:
queue(queue const&) = delete;
void operator=(queue const&) = delete;
};
} // namespace grpc
} // namespace output
} // namespace falco

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors
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.
@@ -16,7 +16,7 @@ limitations under the License.
#include "config_falco.h"
#include "grpc_server_impl.h"
#include "grpc_queue.h"
#include "falco_outputs_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 = queue::get().try_pop(res);
ctx.m_has_more = outputs::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 = queue::get().try_pop(res);
ctx.m_has_more = outputs::queue::get().try_pop(res);
}
void falco::grpc::server_impl::version(const context& ctx, const version::request&, version::response& res)

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -16,13 +16,25 @@ 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;
@@ -69,6 +81,19 @@ 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;

View File

@@ -1,5 +1,5 @@
/*
Copyright (C) 2020 The Falco Authors.
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.
@@ -19,15 +19,25 @@ 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;

1
userspace/falco/lua/.gitignore vendored Normal file
View File

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

View File

@@ -0,0 +1,271 @@
-- 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

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@@ -0,0 +1,44 @@
-- 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)

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@@ -1,73 +0,0 @@
/*
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

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@@ -1,63 +0,0 @@
/*
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();
}

View File

@@ -1,46 +0,0 @@
/*
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

View File

@@ -1,76 +0,0 @@
/*
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
}

View File

@@ -1,35 +0,0 @@
/*
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

View File

@@ -1,54 +0,0 @@
/*
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;
}
}

View File

@@ -1,35 +0,0 @@
/*
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

View File

@@ -1,65 +0,0 @@
/*
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();
}

View File

@@ -1,44 +0,0 @@
/*
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

View File

@@ -1,45 +0,0 @@
/*
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();
}

View File

@@ -1,37 +0,0 @@
/*
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

View File

@@ -1,31 +0,0 @@
/*
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());
}

View File

@@ -1,35 +0,0 @@
/*
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

View File

@@ -1,12 +1,19 @@
#!/bin/env/bash
#!/bin/sh
set -euo pipefail
SOURCE_DIR=$1
OPENSSL=$2
NEW_CHECKSUM=$(./falco --list -N | sha256sum | awk '{print $1}')
if ! command -v "${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 $2}')
CUR_CHECKSUM=$(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."

View File

@@ -1,10 +0,0 @@
#ifndef HAWK_H
#define HAWK_H
extern void hawk_init();
extern void hawk_destroy();
typedef void* hawk_engine;
typedef void (*hawk_watch_rules_cb)(char* rules_content, hawk_engine* engine);
extern void hawk_watch_rules(hawk_watch_rules_cb cb, hawk_engine* engine);
#endif //HAWK_H