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blob c894c5a9ecb0b4d7d1227760f19952cac6606864 1335 bytes (raw)
name: etc/guix/pre-push 	 # note: path name is non-authoritative(*)

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#!/bin/sh

# 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>

z40=0000000000000000000000000000000000000000

# Only use the hook when pushing to Savannah.
case "$2" in
*git.sv.gnu.org*)
	break
	;;
*)
	exit 0
	;;
esac

while read local_ref local_sha remote_ref remote_sha
do
	if [ "$local_sha" = $z40 ]
	then
		# Handle delete
		:
	else
		if [ "$remote_sha" = $z40 ]
		then
			# New branch, examine all commits
			range="$local_sha"
		else
			# Update to existing branch, examine new commits
			range="$remote_sha..$local_sha"
		fi

		# Verify the signatures of all commits being pushed.
		git verify-commit $(git rev-list $range) >/dev/null 2>&1

		exit $?
	fi
done

exit 0

debug log:

solving c894c5a9e ...
found c894c5a9e in https://git.savannah.gnu.org/cgit/guix.git

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    Blobs themselves have no identifier aside from the hash of its contents.^

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