contrib/ciabot/ciabot.sh

   1 #!/bin/sh
   2 # Distributed under the terms of the GNU General Public License v2
   3 # Copyright (c) 2006 Fernando J. Pereda <ferdy@gentoo.org>
   4 # Copyright (c) 2008 Natanael Copa <natanael.copa@gmail.com>
   5 # Copyright (c) 2010 Eric S. Raymond <esr@thyrsus.com>
   6 # Assistance and review by Petr Baudis, author of ciabot.pl,
   7 # is gratefully acknowledged.
   8 #
   9 # This is a version 3.x of ciabot.sh; use -V to find the exact
  10 # version.  Versions 1 and 2 were shipped in 2006 and 2008 and are not
  11 # version-stamped.  The version 2 maintainer has passed the baton.
  12 #
  13 # Note: This script should be considered obsolete.
  14 # There is a faster, better-documented rewrite in Python: find it as ciabot.py
  15 # Use this only if your hosting site forbids Python hooks.
  16 # It requires: git(1), hostname(1), cut(1), sendmail(1), and wget(1).
  17 #
  18 # Originally based on Git ciabot.pl by Petr Baudis.
  19 # This script contains porcelain and porcelain byproducts.
  20 #
  21 # usage: ciabot.sh [-V] [-n] [-p projectname] [refname commit]
  22 #
  23 # This script is meant to be run either in a post-commit hook or in an
  24 # update hook. Try it with -n to see the notification mail dumped to
  25 # stdout and verify that it looks sane. With -V it dumps its version
  26 # and exits.
  27 #
  28 # In post-commit, run it without arguments. It will query for
  29 # current HEAD and the latest commit ID to get the information it
  30 # needs.
  31 #
  32 # In update, you have to call it once per merged commit:
  33 #
  34 #       refname=$1
  35 #       oldhead=$2
  36 #       newhead=$3
  37 #       for merged in $(git rev-list ${oldhead}..${newhead} | tac) ; do
  38 #               /path/to/ciabot.sh ${refname} ${merged}
  39 #       done
  40 #
  41 # The reason for the tac call is that git rev-list emits commits from
  42 # most recent to least - better to ship notifactions from oldest to newest.
  43 #
  44 # Configuration variables affecting this script:
  45 #
  46 # ciabot.project = name of the project
  47 # ciabot.repo = name of the project repo for gitweb/cgit purposes
  48 # ciabot.revformat = format in which the revision is shown
  49 #
  50 # ciabot.project defaults to the directory name of the repository toplevel.
  51 # ciabot.repo defaults to ciabot.project lowercased.
  52 #
  53 # This means that in the normal case you need not do any configuration at all,
  54 # but setting the project name will speed it up slightly.
  55 #
  56 # The revformat variable may have the following values
  57 # raw -> full hex ID of commit
  58 # short -> first 12 chars of hex ID
  59 # describe = -> describe relative to last tag, falling back to short
  60 # The default is 'describe'.
  61 #
  62 # Note: the shell ancestors of this script used mail, not XML-RPC, in
  63 # order to avoid stalling until timeout when the CIA XML-RPC server is
  64 # down. It is unknown whether this is still an issue in 2010, but
  65 # XML-RPC would be annoying to do from sh in any case. (XML-RPC does
  66 # have the advantage that it guarantees notification of multiple commits
  67 # shpped from an update in their actual order.)
  68 #
  69
  70 # The project as known to CIA. You can set this with a -p option,
  71 # or let it default to the directory name of the repo toplevel.
  72 project=$(git config --get ciabot.project)
  73
  74 if [ -z $project ]
  75 then
  76     here=`pwd`;
  77     while :; do
  78         if [ -d $here/.git ]
  79         then
  80             project=`basename $here`
  81             break
  82         elif [ $here = '/' ]
  83         then
  84             echo "ciabot.sh: no .git below root!"
  85             exit 1
  86         fi
  87         here=`dirname $here`
  88     done
  89 fi
  90
  91 # Name of the repo for gitweb/cgit purposes
  92 repo=$(git config --get ciabot.repo)
  93 [ -z $repo] && repo=$(echo "${project}" | tr '[A-Z]' '[a-z]')
  94
  95 # What revision format do we want in the summary?
  96 revformat=$(git config --get ciabot.revformat)
  97
  98 # Fully qualified domain name of the repo host.  You can hardwire this
  99 # to make the script faster. The -f option works under Linux and FreeBSD,
 100 # but not OpenBSD and NetBSD. But under OpenBSD and NetBSD,
 101 # hostname without options gives the FQDN.
 102 if hostname -f >/dev/null 2>&1
 103 then
 104     hostname=`hostname -f`
 105 else
 106     hostname=`hostname`
 107 fi
 108
 109 # Changeset URL prefix for your repo: when the commit ID is appended
 110 # to this, it should point at a CGI that will display the commit
 111 # through gitweb or something similar. The defaults will probably
 112 # work if you have a typical gitweb/cgit setup.
 113 #urlprefix="http://${host}/cgi-bin/gitweb.cgi?p=${repo};a=commit;h="
 114 urlprefix="http://${host}/cgi-bin/cgit.cgi/${repo}/commit/?id="
 115
 116 #
 117 # You probably will not need to change the following:
 118 #
 119
 120 # Identify the script. The 'generator' variable should change only
 121 # when the script itself gets a new home and maintainer.
 122 generator="http://www.catb.org/~esr/ciabot/ciabot.sh"
 123 version=3.5
 124
 125 # Addresses for the e-mail
 126 from="CIABOT-NOREPLY@${hostname}"
 127 to="cia@cia.vc"
 128
 129 # SMTP client to use - may need to edit the absolute pathname for your system
 130 sendmail="sendmail -t -f ${from}"
 131
 132 #
 133 # No user-serviceable parts below this line:
 134 #
 135
 136 # Should include all places sendmail is likely to lurk.
 137 PATH="$PATH:/usr/sbin/"
 138
 139 mode=mailit
 140 while getopts pnV opt
 141 do
 142     case $opt in
 143         p) project=$2; shift ; shift ;;
 144         n) mode=dumpit; shift ;;
 145         V) echo "ciabot.sh: version $version"; exit 0; shift ;;
 146     esac
 147 done
 148
 149 # Cough and die if user has not specified a project
 150 if [ -z "$project" ]
 151 then
 152     echo "ciabot.sh: no project specified, bailing out." >&2
 153     exit 1
 154 fi
 155
 156 if [ $# -eq 0 ] ; then
 157         refname=$(git symbolic-ref HEAD 2>/dev/null)
 158         merged=$(git rev-parse HEAD)
 159 else
 160         refname=$1
 161         merged=$2
 162 fi
 163
 164 # This tries to turn your gitwebbish URL into a tinyurl so it will take up
 165 # less space on the IRC notification line. Some repo sites (I'm looking at
 166 # you, berlios.de!) forbid wget calls for security reasons.  On these,
 167 # the code will fall back to the full un-tinyfied URL.
 168 longurl=${urlprefix}${merged}
 169 url=$(wget -O - -q http://tinyurl.com/api-create.php?url=${longurl} 2>/dev/null)
 170 if [ -z "$url" ]; then
 171         url="${longurl}"
 172 fi
 173
 174 refname=${refname##refs/heads/}
 175
 176 case $revformat in
 177 raw) rev=$merged ;;
 178 short) rev='' ;;
 179 *) rev=$(git describe ${merged} 2>/dev/null) ;;
 180 esac
 181 [ -z ${rev} ] && rev=$(echo "$merged" | cut -c 1-12)
 182
 183 # We discard the part of the author's address after @.
 184 # Might be nice to ship the full email address, if not
 185 # for spammers' address harvesters - getting this wrong
 186 # would make the freenode #commits channel into harvester heaven.
 187 author=$(git log -1 '--pretty=format:%an <%ae>' $merged)
 188 author=$(echo "$author" | sed -n -e '/^.*<\([^@]*\).*$/s--\1-p')
 189
 190 logmessage=$(git log -1 '--pretty=format:%s' $merged)
 191 ts=$(git log -1 '--pretty=format:%at' $merged)
 192 files=$(git diff-tree -r --name-only ${merged} | sed -e '1d' -e 's-.*-<file>&</file>-')
 193
 194 out="
 195 <message>
 196   <generator>
 197     <name>CIA Shell client for Git</name>
 198     <version>${version}</version>
 199     <url>${generator}</url>
 200   </generator>
 201   <source>
 202     <project>${project}</project>
 203     <branch>$repo:${refname}</branch>
 204   </source>
 205   <timestamp>${ts}</timestamp>
 206   <body>
 207     <commit>
 208       <author>${author}</author>
 209       <revision>${rev}</revision>
 210       <files>
 211         ${files}
 212       </files>
 213       <log>${logmessage} ${url}</log>
 214       <url>${url}</url>
 215     </commit>
 216   </body>
 217 </message>"
 218
 219 if [ "$mode" = "dumpit" ]
 220 then
 221     sendmail=cat
 222 fi
 223
 224 ${sendmail} << EOM
 225 Message-ID: <${merged}.${author}@${project}>
 226 From: ${from}
 227 To: ${to}
 228 Content-type: text/xml
 229 Subject: DeliverXML
 230 ${out}
 231 EOM
 232
 233 # vim: set tw=70 :