6addbe0747
bbd7579 Fix regsig checking for subkey sigs in verify-commits (Matt Corallo) d025bc7 Allow any subkey in verify-commits (Matt Corallo) eddc77a Add comment re: why SHA1 is disabled (Peter Todd) d9c450f Verify Tree-SHA512s in merge commits, enforce sigs are not SHA1 (Matt Corallo) be908a6 Fail merge if there are any symlinks (Matt Corallo) Tree-SHA512: bb66c59cc1c6b1c86d7d8be7adb0769c6598c0e28ad927409941f30af87d390521e82fc13700ee22e92db1bd571db3e19a152ec7b2c0349c6e06f5de62c0b65f
48 lines
1.7 KiB
Bash
Executable File
48 lines
1.7 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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INPUT=$(cat /dev/stdin)
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VALID=false
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REVSIG=false
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IFS='
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'
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if [ "$BITCOIN_VERIFY_COMMITS_ALLOW_SHA1" = 1 ]; then
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GPG_RES="$(echo "$INPUT" | gpg --trust-model always "$@" 2>/dev/null)"
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else
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# Note how we've disabled SHA1 with the --weak-digest option, disabling
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# signatures - including selfsigs - that use SHA1. While you might think that
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# collision attacks shouldn't be an issue as they'd be an attack on yourself,
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# in fact because what's being signed is a commit object that's
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# semi-deterministically generated by untrusted input (the pull-req) in theory
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# an attacker could construct a pull-req that results in a commit object that
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# they've created a collision for. Not the most likely attack, but preventing
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# it is pretty easy so we do so as a "belt-and-suspenders" measure.
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GPG_RES="$(echo "$INPUT" | gpg --trust-model always --weak-digest sha1 "$@" 2>/dev/null)"
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fi
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for LINE in $(echo "$GPG_RES"); do
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case "$LINE" in
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"[GNUPG:] VALIDSIG "*)
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while read KEY; do
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[ "${LINE#?GNUPG:? VALIDSIG * * * * * * * * * }" = "$KEY" ] && VALID=true
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done < ./contrib/verify-commits/trusted-keys
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;;
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"[GNUPG:] REVKEYSIG "*)
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[ "$BITCOIN_VERIFY_COMMITS_ALLOW_REVSIG" != 1 ] && exit 1
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REVSIG=true
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GOODREVSIG="[GNUPG:] GOODSIG ${LINE#* * *}"
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;;
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esac
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done
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if ! $VALID; then
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exit 1
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fi
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if $VALID && $REVSIG; then
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echo "$INPUT" | gpg --trust-model always "$@" | grep "^\[GNUPG:\] \(NEWSIG\|SIG_ID\|VALIDSIG\)" 2>/dev/null
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echo "$GOODREVSIG"
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else
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echo "$INPUT" | gpg --trust-model always "$@" 2>/dev/null
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fi
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