working group handling. initial git stubbing
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427a13fd32
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GPG Key ID:
8E47A1EC35A1551D
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@ -1,16 +1,16 @@
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@ -1,2 +1,2 @@
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64263feac7b00952e9ec3b6c1fd11316faa58ff673c6bd085fac9f6f8d8389f6 .gitignore
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e008111dff82be23ab7999b0938e9fffb2fd4826d99f87ed5d0a70256fd43908 sig
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592bb0c186797cc93e3e1eb4c58ceb420b9c36f72521f71da49a05c6452e95e6 sig
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44
sig
44
sig
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@ -6,11 +6,15 @@ MIN_GPG_VERSION=2.2
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MIN_OPENSSL_VERSION=1.1
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MIN_GETOPT_VERSION=2.33
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## Private Functions
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### Bail with error message
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die() {
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echo "$@" >&2
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exit 1
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}
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### Bail and instruct user on missing package to install for their platform
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die_pkg() {
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local package=${1?}
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local version=${2?}
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@ -36,6 +40,7 @@ die_pkg() {
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exit 1
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}
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### Check if actual binary version is >= minimum version
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check_version(){
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local pkg="${1?}"
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local have="${2?}"
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@ -53,6 +58,7 @@ check_version(){
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done
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}
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### Check if required binaries are installed at appropriate versions
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check_tools(){
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if [ -z "${BASH_VERSINFO}" ] \
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|| [ -z "${BASH_VERSINFO[0]}" ] \
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@ -78,6 +84,7 @@ check_tools(){
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done
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}
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### Handle different implementations of mktemp across platforms
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get_temp(){
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echo "$(
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mktemp \
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@ -90,6 +97,8 @@ get_temp(){
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)"
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}
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### Get files that will be added to the manifest for signing
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### Use git if available, else fall back to find
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get_files(){
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if command -v git >/dev/null; then
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git ls-files | grep -v ".${PROGRAM}"
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@ -101,6 +110,8 @@ get_files(){
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fi
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}
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### Verify a file has 0-N unique valid detached signatures
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### Optionally verify all signatures belong to keys in gpg alias group
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verify_file() {
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[ $# -eq 3 ] || die "Usage: verify_file <threshold> <group> <file>"
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local threshold="${1}"
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@ -112,10 +123,12 @@ verify_file() {
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local fingerprint
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local signer
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[ ! -z "$group" ] && group_config="$( \
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if [ ! -z "$group" ]; then
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group_config="$( \
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gpg --with-colons --list-config group \
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| grep -i "^cfg:group:${group}:" \
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)" || die "Error: group \"${group}\" not found in ~/.gnupg/gpg.conf"
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fi
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for sig_filename in "${filename%.*}".*.asc; do
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gpg --verify "${sig_filename}" "${filename}" >/dev/null 2>&1 || {
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@ -153,6 +166,21 @@ verify_file() {
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}
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}
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### Verify all commits in git repo have valid signatures
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### Optionally verify a minimum number of valid unique signatures
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### Optionally verify all signatures belong to keys in gpg alias group
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verify_git(){
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[ $# -eq 2 ] || die "Usage: verify_git <threshold> <group>"
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local threshold="${1}"
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local group="${2}"
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#for commit in $(git log --format='%H%GP'); do
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# echo "$commit"
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#done
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}
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## Public Commands
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cmd_manifest() {
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mkdir -p ".${PROGRAM}"
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printf "$(get_files | xargs openssl sha256 -r)" \
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@ -162,9 +190,8 @@ cmd_manifest() {
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}
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cmd_verify() {
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local opts selected_line min=1 group=""
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local opts min=1 group=""
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opts="$(getopt -o m:g: -l min:,group: -n "$PROGRAM" -- "$@")"
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local err=$?
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eval set -- "$opts"
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while true; do case $1 in
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-m|--min) min="$2"; shift 2 ;;
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--) shift; break ;;
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esac done
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#TODO: if git: show git signature status to aid in trust building
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command -v git >/dev/null 2>&1 \
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&& ( [ -d .git ] || git rev-parse --git-dir > /dev/null 2>&1 ) \
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&& verify_git "${min}" "${group}"
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#TODO: if git and if invalid: show diff against last valid version
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( [ -d ".${PROGRAM}" ] && ls .${PROGRAM}/*.asc >/dev/null 2>&1 ) \
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|| die "Error: No signatures"
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cat <<-_EOF
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Usage:
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$PROGRAM verify [--group=<group>,-g <group>] [--min=<N>,-m <N>]
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Verify all signing policies for this directory are met
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Verify m-of-n signatures by given group are present for directory
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$PROGRAM add
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Add signature to manifest for this directory
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$PROGRAM manifest
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@ -220,9 +250,13 @@ cmd_usage() {
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_EOF
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}
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# Verify all tools in this list are installed at needed versions
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check_tools head cut find sort sed getopt gpg openssl
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# Allow entire script to be namespaced based on filename
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PROGRAM="${0##*/}"
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# Export public sub-commands
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case "$1" in
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verify) shift; cmd_verify "$@" ;;
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add) shift; cmd_add "$@" ;;
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