diff options
Diffstat (limited to 'contrib/verify-commits/verify-commits.sh')
| -rwxr-xr-x | contrib/verify-commits/verify-commits.sh | 148 |
1 files changed, 109 insertions, 39 deletions
diff --git a/contrib/verify-commits/verify-commits.sh b/contrib/verify-commits/verify-commits.sh index cfe4f11a0b..74b7f38375 100755 --- a/contrib/verify-commits/verify-commits.sh +++ b/contrib/verify-commits/verify-commits.sh @@ -3,60 +3,130 @@ # Distributed under the MIT software license, see the accompanying # file COPYING or http://www.opensource.org/licenses/mit-license.php. -# Not technically POSIX-compliant due to use of "local", but almost every -# shell anyone uses today supports it, so its probably fine - DIR=$(dirname "$0") [ "/${DIR#/}" != "$DIR" ] && DIR=$(dirname "$(pwd)/$0") +echo "Using verify-commits data from ${DIR}" + VERIFIED_ROOT=$(cat "${DIR}/trusted-git-root") +VERIFIED_SHA512_ROOT=$(cat "${DIR}/trusted-sha512-root-commit") REVSIG_ALLOWED=$(cat "${DIR}/allow-revsig-commits") HAVE_FAILED=false -IS_SIGNED () { - if [ $1 = $VERIFIED_ROOT ]; then - return 0; + +HAVE_GNU_SHA512=1 +[ ! -x "$(which sha512sum)" ] && HAVE_GNU_SHA512=0 + +if [ x"$1" = "x" ]; then + CURRENT_COMMIT="HEAD" +else + CURRENT_COMMIT="$1" +fi + +if [ "${CURRENT_COMMIT#* }" != "$CURRENT_COMMIT" ]; then + echo "Commit must not contain spaces?" > /dev/stderr + exit 1 +fi + +VERIFY_TREE=0 +if [ x"$2" = "x--tree-checks" ]; then + VERIFY_TREE=1 +fi + +NO_SHA1=1 +PREV_COMMIT="" + +while true; do + if [ "$CURRENT_COMMIT" = $VERIFIED_ROOT ]; then + echo "There is a valid path from "$CURRENT_COMMIT" to $VERIFIED_ROOT where all commits are signed!" + exit 0; + fi + + if [ "$CURRENT_COMMIT" = $VERIFIED_SHA512_ROOT ]; then + if [ "$VERIFY_TREE" = "1" ]; then + echo "All Tree-SHA512s matched up to $VERIFIED_SHA512_ROOT" > /dev/stderr + fi + VERIFY_TREE=0 + NO_SHA1=0 fi - if [ "${REVSIG_ALLOWED#*$1}" != "$REVSIG_ALLOWED" ]; then + + if [ "$NO_SHA1" = "1" ]; then + export BITCOIN_VERIFY_COMMITS_ALLOW_SHA1=0 + else + export BITCOIN_VERIFY_COMMITS_ALLOW_SHA1=1 + fi + + if [ "${REVSIG_ALLOWED#*$CURRENT_COMMIT}" != "$REVSIG_ALLOWED" ]; then export BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG=1 else export BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG=0 fi - if ! git -c "gpg.program=${DIR}/gpg.sh" verify-commit $1 > /dev/null 2>&1; then - return 1; - fi - local PARENTS - PARENTS=$(git show -s --format=format:%P $1) - for PARENT in $PARENTS; do - if IS_SIGNED $PARENT > /dev/null; then - return 0; + + if ! git -c "gpg.program=${DIR}/gpg.sh" verify-commit "$CURRENT_COMMIT" > /dev/null; then + if [ "$PREV_COMMIT" != "" ]; then + echo "No parent of $PREV_COMMIT was signed with a trusted key!" > /dev/stderr + echo "Parents are:" > /dev/stderr + PARENTS=$(git show -s --format=format:%P $PREV_COMMIT) + for PARENT in $PARENTS; do + git show -s $PARENT > /dev/stderr + done + else + echo "$CURRENT_COMMIT was not signed with a trusted key!" > /dev/stderr fi - done - if ! "$HAVE_FAILED"; then - echo "No parent of $1 was signed with a trusted key!" > /dev/stderr - echo "Parents are:" > /dev/stderr - for PARENT in $PARENTS; do - git show -s $PARENT > /dev/stderr - done - HAVE_FAILED=true + exit 1 fi - return 1; -} -if [ x"$1" = "x" ]; then - TEST_COMMIT="HEAD" -else - TEST_COMMIT="$1" -fi + # We always verify the top of the tree + if [ "$VERIFY_TREE" = 1 -o "$PREV_COMMIT" = "" ]; then + IFS_CACHE="$IFS" + IFS=' +' + for LINE in $(git ls-tree --full-tree -r "$CURRENT_COMMIT"); do + case "$LINE" in + "12"*) + echo "Repo contains symlinks" > /dev/stderr + IFS="$IFS_CACHE" + exit 1 + ;; + esac + done + IFS="$IFS_CACHE" -IS_SIGNED "$TEST_COMMIT" -RES=$? -if [ "$RES" = 1 ]; then - if ! "$HAVE_FAILED"; then - echo "$TEST_COMMIT was not signed with a trusted key!" + FILE_HASHES="" + for FILE in $(git ls-tree --full-tree -r --name-only "$CURRENT_COMMIT" | LC_ALL=C sort); do + if [ "$HAVE_GNU_SHA512" = 1 ]; then + HASH=$(git cat-file blob "$CURRENT_COMMIT":"$FILE" | sha512sum | { read FIRST OTHER; echo $FIRST; } ) + else + HASH=$(git cat-file blob "$CURRENT_COMMIT":"$FILE" | shasum -a 512 | { read FIRST OTHER; echo $FIRST; } ) + fi + [ "$FILE_HASHES" != "" ] && FILE_HASHES="$FILE_HASHES"' +' + FILE_HASHES="$FILE_HASHES$HASH $FILE" + done + + if [ "$HAVE_GNU_SHA512" = 1 ]; then + TREE_HASH="$(echo "$FILE_HASHES" | sha512sum)" + else + TREE_HASH="$(echo "$FILE_HASHES" | shasum -a 512)" + fi + HASH_MATCHES=0 + MSG="$(git show -s --format=format:%B "$CURRENT_COMMIT" | tail -n1)" + + case "$MSG -" in + "Tree-SHA512: $TREE_HASH") + HASH_MATCHES=1;; + esac + + if [ "$HASH_MATCHES" = "0" ]; then + echo "Tree-SHA512 did not match for commit $CURRENT_COMMIT" > /dev/stderr + exit 1 + fi fi -else - echo "There is a valid path from $TEST_COMMIT to $VERIFIED_ROOT where all commits are signed!" -fi -exit $RES + PARENTS=$(git show -s --format=format:%P "$CURRENT_COMMIT") + for PARENT in $PARENTS; do + PREV_COMMIT="$CURRENT_COMMIT" + CURRENT_COMMIT="$PARENT" + break + done +done |