update.sample
1#!/bin/sh
2#
3# An example hook script to block unannotated tags from entering.
4# Called by "git receive-pack" with arguments: refname sha1-old sha1-new
5#
6# To enable this hook, rename this file to "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.allowmodifytag
17# This boolean sets whether a tag may be modified after creation. By default
18# it won't be.
19# hooks.allowdeletebranch
20# This boolean sets whether deleting branches will be allowed in the
21# repository. By default they won't be.
22# hooks.denycreatebranch
23# This boolean sets whether remotely creating branches will be denied
24# in the repository. By default this is allowed.
25#
26
27# --- Command line
28refname="$1"
29oldrev="$2"
30newrev="$3"
31
32# --- Safety check
33if [ -z "$GIT_DIR" ]; then
34 echo "Don't run this script from the command line." >&2
35 echo " (if you want, you could supply GIT_DIR then run" >&2
36 echo " $0 <ref> <oldrev> <newrev>)" >&2
37 exit 1
38fi
39
40if [ -z "$refname" -o -z "$oldrev" -o -z "$newrev" ]; then
41 echo "usage: $0 <ref> <oldrev> <newrev>" >&2
42 exit 1
43fi
44
45# --- Config
46allowunannotated=$(git config --type=bool hooks.allowunannotated)
47allowdeletebranch=$(git config --type=bool hooks.allowdeletebranch)
48denycreatebranch=$(git config --type=bool hooks.denycreatebranch)
49allowdeletetag=$(git config --type=bool hooks.allowdeletetag)
50allowmodifytag=$(git config --type=bool hooks.allowmodifytag)
51
52# check for no description
53projectdesc=$(sed -e '1q' "$GIT_DIR/description")
54case "$projectdesc" in
55"Unnamed repository"* | "")
56 echo "*** Project description file hasn't been set" >&2
57 exit 1
58 ;;
59esac
60
61# --- Check types
62# if $newrev is 0000...0000, it's a commit to delete a ref.
63zero=$(git hash-object --stdin </dev/null | tr '[0-9a-f]' '0')
64if [ "$newrev" = "$zero" ]; then
65 newrev_type=delete
66else
67 newrev_type=$(git cat-file -t $newrev)
68fi
69
70case "$refname","$newrev_type" in
71 refs/tags/*,commit)
72 # un-annotated tag
73 short_refname=${refname##refs/tags/}
74 if [ "$allowunannotated" != "true" ]; then
75 echo "*** The un-annotated tag, $short_refname, is not allowed in this repository" >&2
76 echo "*** Use 'git tag [ -a | -s ]' for tags you want to propagate." >&2
77 exit 1
78 fi
79 ;;
80 refs/tags/*,delete)
81 # delete tag
82 if [ "$allowdeletetag" != "true" ]; then
83 echo "*** Deleting a tag is not allowed in this repository" >&2
84 exit 1
85 fi
86 ;;
87 refs/tags/*,tag)
88 # annotated tag
89 if [ "$allowmodifytag" != "true" ] && git rev-parse $refname > /dev/null 2>&1
90 then
91 echo "*** Tag '$refname' already exists." >&2
92 echo "*** Modifying a tag is not allowed in this repository." >&2
93 exit 1
94 fi
95 ;;
96 refs/heads/*,commit)
97 # branch
98 if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
99 echo "*** Creating a branch is not allowed in this repository" >&2
100 exit 1
101 fi
102 ;;
103 refs/heads/*,delete)
104 # delete branch
105 if [ "$allowdeletebranch" != "true" ]; then
106 echo "*** Deleting a branch is not allowed in this repository" >&2
107 exit 1
108 fi
109 ;;
110 refs/remotes/*,commit)
111 # tracking branch
112 ;;
113 refs/remotes/*,delete)
114 # delete tracking branch
115 if [ "$allowdeletebranch" != "true" ]; then
116 echo "*** Deleting a tracking branch is not allowed in this repository" >&2
117 exit 1
118 fi
119 ;;
120 *)
121 # Anything else (is there anything else?)
122 echo "*** Update hook: unknown type of update to ref $refname of type $newrev_type" >&2
123 exit 1
124 ;;
125esac
126
127# --- Finished
128exit 0