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easejs/tools/signchk

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#!/bin/bash
#
# Lists all commits after a given commit that do not have a trusted signature
#
# Allows for automated detection of potential attacks or false authorship of
# commits by validating signatures against trusted public GPG keys.
#
# Copyright (C) 2012 Mike Gerwitz
#
# This file is part of ease.js.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
##
# default to last unsigned commit (specific to ease.js)
chkafter="${1:-1b1790029}"
# Check every commit after chkcommit (or all commits if chkcommit was not
# provided) for a trusted signature, listing invalid commits. %G? will output
# "G" if the signature is trusted.
t=$'\t'
git log --pretty="format:%H %aN$t%s$t%G?" "$chkafter.." \
| grep -v "${t}G$"