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eb0329c644572aa3062f877f5588265c3c9198cd
[code/fbi-announce.git] / fbi-announce.sh
1 #!/bin/sh
2 #
3 # fbi-announce — announce Git commits to the FBI mail-to-IRC gateway
4 #
5 # Copyright (c) 2006 Fernando J. Pereda <ferdy@gentoo.org>
6 # Copyright (c) 2008 Joerg Jaspert <joerg@debian.org>
7 # Copyright © 2009–2010 martin f. krafft <madduck@debian.org>
8 #
9 # Distributed under the terms of the GNU General Public License v2
10 #
11 # This script is based on Git ciabot.pl by Petr Baudis.
12 #
13 #
14 #
15 # The script is meant to be configured using git-config with the following keys:
16 #   hooks.fbi-project         the project name known to FBI
17 #   hooks.fbi-component       an optional component name
18 #   hooks.fbi-url-template    the template to the gitweb URL (containing @@sha1@@)
19 #   hooks.fbi-emailsender     the sender address to use in the email
20 #   hooks.fbi-refwidth        the width of references to show (default 7)
21 #   hooks.fbi-noisy           include the entire log message in the announcement
22 #   hooks.fbi-msg-template    the template for the message to be sent (default:
23 #                               [@@component@@/]@@project@@: @@author@@: \
24 #                               @@logmessage@@ [@@ref@@] @@url@@)
25 #
26 # The hook is meant ot be run from the Git post-receive hook.
27 #
28 set -eu
29
30 # we need to ensure we know $GIT_DIR for the git-config calls
31 GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)
32 if [ -z "$GIT_DIR" ]; then
33   echo >&2 "E: post-receive: GIT_DIR not set"
34   exit 1
35 fi
36 export GIT_DIR
37
38 project=$(git config hooks.fbi-project 2>/dev/null) || {
39   echo >&2 "E: FBI project not set (hooks.fbi-project)"
40   exit 1
41 }
42 component=$(git config hooks.fbi-component 2>/dev/null ||:)
43 url=$(git config hooks.fbi-url-template 2>/dev/null ||:)
44 noisy=$(git config hooks.fbi-noisy 2>/dev/null || echo false)
45 from=$(git config hooks.fbi-emailsender 2>/dev/null ||:)
46 to="commit@commit.ganneff.de" #TODO: possibly factor out to config
47
48 # mail submission client to use
49 if [ -n "${FBI_ANNOUNCE_TO_STDOUT:-}" ]; then
50   sendmail="cat"
51   echo >&2 'I: outputting to stdout since $FBI_ANNOUNCE_TO_STDOUT is set.'
52 else
53   sendmail="/usr/sbin/sendmail -t"
54 fi
55
56 if [ $# -eq 0 ] ; then
57   # figure out refs from HEAD since they aren't passed
58   refname=$(git symbolic-ref HEAD 2>/dev/null)
59   merged=$(git rev-parse HEAD)
60 else
61   refname=$1
62   merged=$(git rev-parse $2)
63 fi
64 refname=${refname##refs/heads/}
65 refwidth=$(git config hooks.fbi-refwidth 2>/dev/null || echo 7)
66 ref=$(git describe ${merged} 2>/dev/null || echo ${merged} | cut -c1-${refwidth})
67
68 url=$(echo "$url" | sed -e "s,@@sha1@@,${merged},")
69
70 rawcommit=$(git cat-file commit ${merged})
71 author=$(echo "${rawcommit}" | sed -rne 's,^author (.+) <.*,\1,p')
72 logmessage=$(echo "${rawcommit}" | sed -e '1,/^$/d;s,&,\&amp;,g;s,<,\&lt;,g;s,>,\&gt;,g')
73 ${noisy} || logmessage=$(echo "${logmessage}" | head -n2)
74
75 ts=$(echo "${rawcommit}" | sed -n -e '/^author .*> \([0-9]\+\).*$/s--\1-p')
76 ts=$(date -d "@${ts}")
77
78 msg=$(git config hooks.fbi-msg-template 2>/dev/null ||:)
79 if [ -z "${msg}" ]; then
80   msg="${component:+$component/}${refname}: ${author}: ${logmessage} [${ref}] ${url}"
81 else
82   msg=$(echo "$msg" | sed -re 's,@@([^@]+)@@,${\1},g')
83   eval "msg=\"$msg\""
84 fi
85
86 ${sendmail} <<_eom
87 ${from:+From: ${from}
88 }To: ${to}
89 Subject: Announce ${project}
90 Message-Id: <fbi-announce.${project}.${ref}@$(hostname --fqdn)>
91
92 ${msg}
93 _eom