95 lines
2.3 KiB
Bash
Executable File
95 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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set -o pipefail
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set -e
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BASE_PATH=/tmp/system-audit
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GIT_DIR=/var/local/system-audit
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function collect_hashes {
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target=$1; shift
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for dir in $@; do
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if ! [ -e "${dir}" ]; then
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echo "${dir}" >> ${BASE_PATH}/missing
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wrap_git add --intent-to-add ${BASE_PATH}/missing
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continue
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fi
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find ${dir} -mindepth 1 \( -type f -or -type l \) -print0 | xargs -0 shasum -a 512 >> ${target}
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done
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if [ -e ${target} ]; then
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wrap_git add --intent-to-add ${target}
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fi
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}
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function wrap_git {
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git --work-tree=${BASE_PATH} --git-dir=${GIT_DIR} "$@"
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return $?
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}
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# Create target directory
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mkdir -p ${BASE_PATH}
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# Initialize the dir repo if not present
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if ! [ -e "${GIT_DIR}" ]; then
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mkdir -p $(dirname ${GIT_DIR})
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wrap_git init
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fi
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if [ $# -lt 1 ]; then
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echo "Usage: $0 <collect|freeze|init|check>"
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exit 1
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fi
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case "$1" in
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"collect")
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# Remove old hash-files
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rm -rf ${BASE_PATH}/*
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# [OSX / Linux] Changing this script will cause a different behaviour
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# so also this needs to be monitored.
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collect_hashes ${BASE_PATH}/script $0
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# [OSX only] LaunchAgents and LaunchDaemons can be used to execute
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# programs on behalf of the user or the root user. They may be used
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# as attack vectors.
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collect_hashes ${BASE_PATH}/agents_daemons /System/Library/LaunchDaemons /Library/LaunchDaemons /System/Library/LaunchAgents /Library/LaunchAgents ~/Library/LaunchAgents
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# [OSX / Linux ] /etc (or /private/etc on OSX) does contain configuration
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# for system applications and might be used to change their behaviour.
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collect_hashes ${BASE_PATH}/etc /etc /private/etc
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# [OSX / Linux] Binary folders do contain the executables used by the
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# system itself. Exchanging them can cause harm to the system or leak
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# data.
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collect_hashes ${BASE_PATH}/bin /usr/bin /usr/local/bin ~/bin
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;;
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"freeze")
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wrap_git commit -S -a -m "Status freeze as of $(date)"
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;;
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"check")
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$0 collect
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$0 diff --exit-code
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echo "Everything is still in recorded state"
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;;
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"init")
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if [ $($0 log --pretty=format:'%h [%G?]%d %s (%cr) <%an>' --abbrev-commit | wc -l) -gt 0 ]; then
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echo "The status was already initialized. Use 'collect' and 'diff' to review the state and 'freeze' to save it"
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exit 1
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fi
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$0 collect
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$0 freeze
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;;
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*)
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wrap_git "$@"
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;;
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esac
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