doc: Add a Git hook that verifies signatures before pushing.
* HACKING (Commit Access): Describe the pre-push Git hook. * etc/git/pre-push: New file.
4 years ago
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@@ -4,6 +4,7 @@
Copyright © 2012, 2013, 2014, 2016 Ludovic Courtès <firstname.lastname@example.org>
Copyright © 2015 Mathieu Lirzin <email@example.com>
Copyright © 2017 Leo Famulari <firstname.lastname@example.org>
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
@@ -43,6 +44,10 @@ configure Git to automatically sign commits, run:
git config commit.gpgsign true
git config user.signingkey CABBA6EA1DC0FF33
You can prevent yourself from accidentally pushing unsigned commits to Savannah
by using the pre-push Git hook called 'pre-push'. It's located at
For anything else, please post to email@example.com and leave time for a
review, without committing anything. If you didn’t receive any reply
after two weeks, and if you’re confident, it’s OK to commit.
@@ -0,0 +1,57 @@
# This hook script prevents the user from pushing to Savannah if any of the new
# commits' OpenPGP signatures cannot be verified.
# Called by "git push" after it has checked the remote status, but before
# anything has been pushed. If this script exits with a non-zero status nothing
# will be pushed.
# This hook is called with the following parameters:
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
# If pushing without using a named remote those arguments will be equal.
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
# <local ref> <local sha1> <remote ref> <remote sha1>
# Only use the hook when pushing to Savannah.
case "$2" in
while read local_ref local_sha remote_ref remote_sha
if [ "$local_sha" = $z40 ]
# Handle delete
if [ "$remote_sha" = $z40 ]
# New branch, examine all commits
# Update to existing branch, examine new commits
# Verify the signatures of all commits being pushed.
git verify-commit $(git rev-list $range) >/dev/null 2>&1