From 843e2d7d8d790a02035e90f34928b5c8840c6b9e Mon Sep 17 00:00:00 2001 From: Jonathan Brielmaier Date: Wed, 17 Jan 2024 23:55:17 +0100 Subject: Add git hook for checking commit signing. This is analogue to what upstream Guix does in order to prevent invalid signed commits being pushed. * Makefile: New file. * etc/git/pre-push: New file. Co-authored-by: Wolf --- etc/git/pre-push | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100755 etc/git/pre-push (limited to 'etc/git') diff --git a/etc/git/pre-push b/etc/git/pre-push new file mode 100755 index 0000000..38a7240 --- /dev/null +++ b/etc/git/pre-push @@ -0,0 +1,48 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-3.0-or-later +# Copyright © 2024 Jonathan Brielmaier +# Copyright © 2024 Wolf + +# This hook script prevents the user from pushing to GitLab if any of the new +# commits' OpenPGP signatures cannot be verified, or if a commit is signed +# with an unauthorized key. + +# 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 +# $2 -- URL to which the push is being done +# +# If pushing without using a named remote those arguments will be equal. +# +# Information about the commits which are being pushed is supplied as lines to +# the standard input in the form: +# +# + +# This is the "empty hash" used by Git when pushing a branch deletion. +z40=0000000000000000000000000000000000000000 + +while read local_ref local_hash remote_ref remote_hash +do + # When deleting a remote branch, no commits are pushed to the remote, and + # thus there are no signatures to be verified. + if [ "$local_hash" != $z40 ] + then + # Only use the hook when pushing to the nonguix project on GitLab. + case "$2" in + *gitlab.com[:/]nonguix/*) + exec make authenticate + exit 127 + ;; + *) + exit 0 + ;; + esac + fi +done + +exit 0 -- cgit v1.2.3