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|
#!/usr/bin/env bash
export LC_ALL=C
set -e -o pipefail
# Source the common prelude, which:
# 1. Checks if we're at the top directory of the Bitcoin Core repository
# 2. Defines a few common functions and variables
#
# shellcheck source=libexec/prelude.bash
source "$(dirname "${BASH_SOURCE[0]}")/libexec/prelude.bash"
###################
## Sanity Checks ##
###################
################
# Required non-builtin commands should be invokable
################
check_tools cat diff gpg
################
# Required env vars should be non-empty
################
cmd_usage() {
cat <<EOF
Synopsis:
env GUIX_SIGS_REPO=<path/to/guix.sigs> [ SIGNER=<signer> ] ./contrib/guix/guix-verify
Example overriding signer's manifest to use as base
env GUIX_SIGS_REPO=/home/dongcarl/guix.sigs SIGNER=achow101 ./contrib/guix/guix-verify
EOF
}
if [ -z "$GUIX_SIGS_REPO" ]; then
cmd_usage
exit 1
fi
################
# GUIX_SIGS_REPO should exist as a directory
################
if [ ! -d "$GUIX_SIGS_REPO" ]; then
cat << EOF
ERR: The specified GUIX_SIGS_REPO is not an existent directory:
'$GUIX_SIGS_REPO'
Hint: Please clone the guix.sigs repository and point to it with the
GUIX_SIGS_REPO environment variable.
EOF
cmd_usage
exit 1
fi
##############
## Verify ##
##############
OUTSIGDIR_BASE="${GUIX_SIGS_REPO}/${VERSION}"
echo "Looking for signature directories in '${OUTSIGDIR_BASE}'"
echo ""
# Usage: verify compare_manifest current_manifest
verify() {
local compare_manifest="$1"
local current_manifest="$2"
if ! gpg --quiet --batch --verify "$current_manifest".asc "$current_manifest" 1>&2; then
echo "ERR: Failed to verify GPG signature in '${current_manifest}'"
echo ""
echo "Hint: Either the signature is invalid or the public key is missing"
echo ""
failure=1
elif ! diff --report-identical "$compare_manifest" "$current_manifest" 1>&2; then
echo "ERR: The SHA256SUMS attestation in these two directories differ:"
echo " '${compare_manifest}'"
echo " '${current_manifest}'"
echo ""
failure=1
else
echo "Verified: '${current_manifest}'"
echo ""
fi
}
shopt -s nullglob
all_noncodesigned=( "$OUTSIGDIR_BASE"/*/noncodesigned.SHA256SUMS )
shopt -u nullglob
echo "--------------------"
echo ""
if (( ${#all_noncodesigned[@]} )); then
compare_noncodesigned="${all_noncodesigned[0]}"
if [[ -n "$SIGNER" ]]; then
signer_noncodesigned="$OUTSIGDIR_BASE/$SIGNER/noncodesigned.SHA256SUMS"
if [[ -f "$signer_noncodesigned" ]]; then
echo "Using $SIGNER's manifest as the base to compare against"
compare_noncodesigned="$signer_noncodesigned"
else
echo "Unable to find $SIGNER's manifest, using the first one found"
fi
else
echo "No SIGNER provided, using the first manifest found"
fi
for current_manifest in "${all_noncodesigned[@]}"; do
verify "$compare_noncodesigned" "$current_manifest"
done
echo "DONE: Checking output signatures for noncodesigned.SHA256SUMS"
echo ""
else
echo "WARN: No signature directories with noncodesigned.SHA256SUMS found"
echo ""
fi
shopt -s nullglob
all_all=( "$OUTSIGDIR_BASE"/*/all.SHA256SUMS )
shopt -u nullglob
echo "--------------------"
echo ""
if (( ${#all_all[@]} )); then
compare_all="${all_all[0]}"
if [[ -n "$SIGNER" ]]; then
signer_all="$OUTSIGDIR_BASE/$SIGNER/all.SHA256SUMS"
if [[ -f "$signer_all" ]]; then
echo "Using $SIGNER's manifest as the base to compare against"
compare_all="$signer_all"
else
echo "Unable to find $SIGNER's manifest, using the first one found"
fi
else
echo "No SIGNER provided, using the first manifest found"
fi
for current_manifest in "${all_all[@]}"; do
verify "$compare_all" "$current_manifest"
done
# Sanity check: there should be no entries that exist in
# noncodesigned.SHA256SUMS that doesn't exist in all.SHA256SUMS
if [[ "$(comm -23 <(sort "$compare_noncodesigned") <(sort "$compare_all") | wc -c)" -ne 0 ]]; then
echo "ERR: There are unique lines in noncodesigned.SHA256SUMS which"
echo " do not exist in all.SHA256SUMS, something went very wrong."
exit 1
fi
echo "DONE: Checking output signatures for all.SHA256SUMS"
echo ""
else
echo "WARN: No signature directories with all.SHA256SUMS found"
echo ""
fi
echo "===================="
echo ""
if (( ${#all_noncodesigned[@]} + ${#all_all[@]} == 0 )); then
echo "ERR: Unable to perform any verifications as no signature directories"
echo " were found"
echo ""
exit 1
fi
if [ -n "$failure" ]; then
exit 1
fi
|
