133 lines
3.4 KiB
Bash
Executable File
133 lines
3.4 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (c) 2014-2016 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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DIR=$(dirname "$0")
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[ "/${DIR#/}" != "$DIR" ] && DIR=$(dirname "$(pwd)/$0")
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echo "Using verify-commits data from ${DIR}"
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VERIFIED_ROOT=$(cat "${DIR}/trusted-git-root")
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VERIFIED_SHA512_ROOT=$(cat "${DIR}/trusted-sha512-root-commit")
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REVSIG_ALLOWED=$(cat "${DIR}/allow-revsig-commits")
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HAVE_FAILED=false
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HAVE_GNU_SHA512=1
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[ ! -x "$(which sha512sum)" ] && HAVE_GNU_SHA512=0
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if [ x"$1" = "x" ]; then
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CURRENT_COMMIT="HEAD"
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else
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CURRENT_COMMIT="$1"
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fi
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if [ "${CURRENT_COMMIT#* }" != "$CURRENT_COMMIT" ]; then
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echo "Commit must not contain spaces?" > /dev/stderr
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exit 1
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fi
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VERIFY_TREE=0
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if [ x"$2" = "x--tree-checks" ]; then
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VERIFY_TREE=1
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fi
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NO_SHA1=1
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PREV_COMMIT=""
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while true; do
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if [ "$CURRENT_COMMIT" = $VERIFIED_ROOT ]; then
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echo "There is a valid path from "$CURRENT_COMMIT" to $VERIFIED_ROOT where all commits are signed!"
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exit 0;
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fi
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if [ "$CURRENT_COMMIT" = $VERIFIED_SHA512_ROOT ]; then
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if [ "$VERIFY_TREE" = "1" ]; then
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echo "All Tree-SHA512s matched up to $VERIFIED_SHA512_ROOT" > /dev/stderr
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fi
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VERIFY_TREE=0
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NO_SHA1=0
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fi
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if [ "$NO_SHA1" = "1" ]; then
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export BITCOIN_VERIFY_COMMITS_ALLOW_SHA1=0
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else
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export BITCOIN_VERIFY_COMMITS_ALLOW_SHA1=1
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fi
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if [ "${REVSIG_ALLOWED#*$CURRENT_COMMIT}" != "$REVSIG_ALLOWED" ]; then
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export BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG=1
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else
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export BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG=0
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fi
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if ! git -c "gpg.program=${DIR}/gpg.sh" verify-commit "$CURRENT_COMMIT" > /dev/null; then
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if [ "$PREV_COMMIT" != "" ]; then
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echo "No parent of $PREV_COMMIT was signed with a trusted key!" > /dev/stderr
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echo "Parents are:" > /dev/stderr
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PARENTS=$(git show -s --format=format:%P $PREV_COMMIT)
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for PARENT in $PARENTS; do
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git show -s $PARENT > /dev/stderr
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done
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else
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echo "$CURRENT_COMMIT was not signed with a trusted key!" > /dev/stderr
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fi
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exit 1
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fi
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# We always verify the top of the tree
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if [ "$VERIFY_TREE" = 1 -o "$PREV_COMMIT" = "" ]; then
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IFS_CACHE="$IFS"
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IFS='
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'
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for LINE in $(git ls-tree --full-tree -r "$CURRENT_COMMIT"); do
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case "$LINE" in
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"12"*)
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echo "Repo contains symlinks" > /dev/stderr
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IFS="$IFS_CACHE"
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exit 1
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;;
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esac
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done
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IFS="$IFS_CACHE"
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FILE_HASHES=""
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for FILE in $(git ls-tree --full-tree -r --name-only "$CURRENT_COMMIT" | LC_ALL=C sort); do
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if [ "$HAVE_GNU_SHA512" = 1 ]; then
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HASH=$(git cat-file blob "$CURRENT_COMMIT":"$FILE" | sha512sum | { read FIRST OTHER; echo $FIRST; } )
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else
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HASH=$(git cat-file blob "$CURRENT_COMMIT":"$FILE" | shasum -a 512 | { read FIRST OTHER; echo $FIRST; } )
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fi
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[ "$FILE_HASHES" != "" ] && FILE_HASHES="$FILE_HASHES"'
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'
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FILE_HASHES="$FILE_HASHES$HASH $FILE"
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done
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if [ "$HAVE_GNU_SHA512" = 1 ]; then
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TREE_HASH="$(echo "$FILE_HASHES" | sha512sum)"
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else
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TREE_HASH="$(echo "$FILE_HASHES" | shasum -a 512)"
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fi
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HASH_MATCHES=0
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MSG="$(git show -s --format=format:%B "$CURRENT_COMMIT" | tail -n1)"
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case "$MSG -" in
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"Tree-SHA512: $TREE_HASH")
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HASH_MATCHES=1;;
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esac
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if [ "$HASH_MATCHES" = "0" ]; then
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echo "Tree-SHA512 did not match for commit $CURRENT_COMMIT" > /dev/stderr
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exit 1
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fi
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fi
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PARENTS=$(git show -s --format=format:%P "$CURRENT_COMMIT")
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for PARENT in $PARENTS; do
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PREV_COMMIT="$CURRENT_COMMIT"
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CURRENT_COMMIT="$PARENT"
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break
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done
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done
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