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59 lines
1.4 KiB
59 lines
1.4 KiB
#!/bin/sh
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# Not technically POSIX-compliant due to use of "local", but almost every
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# shell anyone uses today supports it, so its probably fine
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DIR=$(dirname "$0")
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[ "/${DIR#/}" != "$DIR" ] && DIR=$(dirname "$(pwd)/$0")
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VERIFIED_ROOT=$(cat "${DIR}/trusted-git-root")
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REVSIG_ALLOWED=$(cat "${DIR}/allow-revsig-commits")
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HAVE_FAILED=false
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IS_SIGNED () {
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if [ $1 = $VERIFIED_ROOT ]; then
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return 0;
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fi
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if [ "${REVSIG_ALLOWED#*$1}" != "$REVSIG_ALLOWED" ]; then
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export BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG=1
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else
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export BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG=0
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fi
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if ! git -c "gpg.program=${DIR}/gpg.sh" verify-commit $1 > /dev/null 2>&1; then
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return 1;
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fi
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local PARENTS
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PARENTS=$(git show -s --format=format:%P $1)
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for PARENT in $PARENTS; do
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if IS_SIGNED $PARENT > /dev/null; then
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return 0;
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fi
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done
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if ! "$HAVE_FAILED"; then
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echo "No parent of $1 was signed with a trusted key!" > /dev/stderr
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echo "Parents are:" > /dev/stderr
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for PARENT in $PARENTS; do
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git show -s $PARENT > /dev/stderr
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done
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HAVE_FAILED=true
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fi
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return 1;
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}
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if [ x"$1" = "x" ]; then
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TEST_COMMIT="HEAD"
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else
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TEST_COMMIT="$1"
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fi
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IS_SIGNED "$TEST_COMMIT"
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RES=$?
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if [ "$RES" = 1 ]; then
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if ! "$HAVE_FAILED"; then
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echo "$TEST_COMMIT was not signed with a trusted key!"
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fi
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else
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echo "There is a valid path from $TEST_COMMIT to $VERIFIED_ROOT where all commits are signed!"
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fi
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exit $RES
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