#!/bin/sh

# This hook script prevents the user from pushing to Savannah 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:
#
#   <local ref> <local sha1> <remote ref> <remote sha1>

z40=0000000000000000000000000000000000000000

# If deleting a branch, there are no commits to check.
if [ "$local_sha" = $z40 ]
then
	true
else
	# Only use the hook when pushing to Savannah.
	case "$2" in
	    *.gnu.org*)
		exec make authenticate check-channel-news
		exit 127
		;;
	    *)
		exit 0
		;;
	esac
fi