Git commit notifications via post-receive hook

Now that we moved our Git repositories to SourceForge, we don't need to
maintain local clones for generating commit notifications anymore, as
SourceForge provides shell access to the repositories.  Instead, we now
run git-notify as a post-receive hook on the SourceForge server.
Actually, we use a wrapper which executes git-notify with the desired
options and which makes it easy to add other post-receive hooks in the
future.

tools/git-post-receive-hook

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+prefix="${0%/*}/notifications"	# $GIT_DIR/hooks/notifications
+recipient='Nagios Plugin Commits <nagiosplug-checkins@lists.sourceforge.net>'
+maxcommits=100
+maxdiffsize=$((300 * 1024))
+gitweburl='http://nagiosplug.git.sf.net/git/gitweb.cgi?p=nagiosplug'
+gitnotify="$prefix/git-notify.pl"
+statefile="$prefix/git-notify.dat"
+
+exec "$gitnotify" \
+  -m "$recipient" \
+  -n "$maxcommits" \
+  -s "$maxdiffsize" \
+  -t "$statefile" \
+  -u "$gitweburl" \
+  -A \
+  -C \
+  -H \
+  -S \
+  -T \
+  -X \
+  -z

tools/git-update-mirror

@@ -1,94 +0,0 @@
-#!/bin/sh
-#
-# Copyright (c) 2009 Nagios Plugins Development Team
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-set -e
-set -u
-
-prefix='/home/git'
-
-PATH="$prefix/opt/git/bin:/bin:/usr/bin"
-export PATH
-
-gitnotify="$prefix/libexec/git-notify"
-recipient='Nagios Plugins Commit List <nagiosplug-checkins@lists.sourceforge.net>'
-maxcommits=100
-maxdiffsize=$((300 * 1024))
-gitweburl='http://repo.or.cz/w'
-tempprefix='/dev/shm'
-fourtyzeros=$(printf '%.40u' 0)
-myself=${0##*/}
-
-checkrefs()
-{
-	turn=$1
-
-	git show-ref | while read object ref
-	do
-		refdir="$tempdir/${ref%/*}"
-		reffile="$tempdir/$ref"
-
-		if [ $turn -eq 2 -a -f "$reffile" ] \
-		    && grep "^1 $object$" "$reffile" >'/dev/null'
-		then	# The ref has not been modified.
-			rm -f "$reffile"
-		else
-			mkdir -p "$refdir"
-			echo "$turn $object" >>"$reffile"
-		fi
-	done
-}
-
-if [ $# -lt 1 ]
-then
-	echo >&2 "Usage: $myself <repository> ..."
-	exit 1
-fi
-
-tempdir=$(mktemp -d "$tempprefix/$myself.XXXXXX")
-tempfile=$(mktemp "$tempprefix/$myself.XXXXXX")
-trap 'rm -rf "$tempdir" "$tempfile"' EXIT
-
-for repository in "$@"
-do
-	cd "$repository"
-
-	checkrefs 1
-	if ! git remote update --prune >"$tempfile" 2>&1
-	then
-		cat >&2 "$tempfile"
-		exit 1
-	fi
-	git fetch --quiet --tags
-	checkrefs 2
-
-	find "$tempdir" -type 'f' -print | while read reffile
-	do
-		ref=${reffile#$tempdir/}
-		old=$(awk '$1 == "1" { print $2; exit }' "$reffile")
-		new=$(awk '$1 == "2" { print $2; exit }' "$reffile")
-		old=${old:-$fourtyzeros}
-		new=${new:-$fourtyzeros}
-
-		echo "$old" "$new" "$ref"
-	done | $gitnotify \
-	    -m "$recipient" \
-	    -n "$maxcommits" \
-	    -s "$maxdiffsize" \
-	    -u "$gitweburl"
-
-	cd "$OLDPWD"
-done