1#!/bin/sh
2#
3# An example hook script to blocks unannotated tags from entering.
4# Called by git-receive-pack with arguments: refname sha1-old sha1-new
5#
6# To enable this hook, make this file executable by "chmod +x update".
7#
8# Config
9# ------
10# hooks.allowunannotated
11#   This boolean sets whether unannotated tags will be allowed into the
12#   repository.  By default they won't be.
13# hooks.allowdeletetag
14#   This boolean sets whether deleting tags will be allowed in the
15#   repository.  By default they won't be.
16# hooks.allowdeletebranch
17#   This boolean sets whether deleting branches will be allowed in the
18#   repository.  By default they won't be.
19#
20
21# --- Command line
22refname="$1"
23oldrev="$2"
24newrev="$3"
25
26# --- Safety check
27if [ -z "$GIT_DIR" ]; then
28	echo "Don't run this script from the command line." >&2
29	echo " (if you want, you could supply GIT_DIR then run" >&2
30	echo "  $0 <ref> <oldrev> <newrev>)" >&2
31	exit 1
32fi
33
34if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
35	echo "Usage: $0 <ref> <oldrev> <newrev>" >&2
36	exit 1
37fi
38
39# --- Config
40allowunannotated=$(git config --bool hooks.allowunannotated)
41allowdeletebranch=$(git config --bool hooks.allowdeletebranch)
42allowdeletetag=$(git config --bool hooks.allowdeletetag)
43
44# check for no description
45projectdesc=$(sed -e '1q' "$GIT_DIR/description")
46if [ -z "$projectdesc" -o "$projectdesc" = "Unnamed repository; edit this file to name it for gitweb." ]; then
47	echo "*** Project description file hasn't been set" >&2
48	exit 1
49fi
50
51# --- Check types
52# if $newrev is 0000...0000, it's a commit to delete a ref.
53if [ "$newrev" = "0000000000000000000000000000000000000000" ]; then
54	newrev_type=delete
55else
56	newrev_type=$(git-cat-file -t $newrev)
57fi
58
59case "$refname","$newrev_type" in
60	refs/tags/*,commit)
61		# un-annotated tag
62		short_refname=${refname##refs/tags/}
63		if [ "$allowunannotated" != "true" ]; then
64			echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
65			echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
66			exit 1
67		fi
68		;;
69	refs/tags/*,delete)
70		# delete tag
71		if [ "$allowdeletetag" != "true" ]; then
72			echo "*** Deleting a tag is not allowed in this repository" >&2
73			exit 1
74		fi
75		;;
76	refs/tags/*,tag)
77		# annotated tag
78		;;
79	refs/heads/*,commit)
80		# branch
81		;;
82	refs/heads/*,delete)
83		# delete branch
84		if [ "$allowdeletebranch" != "true" ]; then
85			echo "*** Deleting a branch is not allowed in this repository" >&2
86			exit 1
87		fi
88		;;
89	refs/remotes/*,commit)
90		# tracking branch
91		;;
92	refs/remotes/*,delete)
93		# delete tracking branch
94		if [ "$allowdeletebranch" != "true" ]; then
95			echo "*** Deleting a tracking branch is not allowed in this repository" >&2
96			exit 1
97		fi
98		;;
99	*)
100		# Anything else (is there anything else?)
101		echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
102		exit 1
103		;;
104esac
105
106# --- Finished
107exit 0
108