Improved index.php to support multiple svn repositories

[Matthijs]

I ran into some trouble setting up reposStyle on my server with
multiple repositories. I backtracked the problem to the parsing of the
repository name.
I have improved the parsing to be more robust.

Below I pasted my copy of the index.php

Matthijs Mullender

file: repos-web\open\log\index.php

<?php
/**
* Repos Style log reader (c) 2007-2008 Staffan Olsson reposstyle.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

// === Print svn log --xml to response ===

// Set the URL to the stylesheet, must be same host or absolute path
from root
$xslt = '/repos-web/view/log.xsl';

// Set either repository root url OR the url to SVNParentPath for
multi-repo
// accepts any subversion url that does not require authentication,
including file:///
// no trailing slash
$repo = '@@Repo@@';
// OR set a parent url instead, corresponding to SVNParentPath, no
trailing slash
$repoparent = 'file:///D:/tracprojects/svn'; // location of the
repository, accessible without authentication
$httpparent = $_SERVER['HTTP_HOST'].'/svn/'; // base url path of the
repositories

// limit log length for performance reasons (users should run svn
client for more entries)
$limit = 20;

// svn executable, command name in PATH or absolute path
$svn = 'svn';

// === configuration done, get parameters ===

isset($_REQUEST['target']) or die("Parameter 'target' is required");
$target = $_REQUEST['target'];

// Repo may be set as server environment variable
// This allows configuration without editing this file,
// as well as very flexible url resolution from mod_rewrite
if (strstr($repo,'@@') && isset($_SERVER['ReposRepo'])) $repo =
$_SERVER['ReposRepo'];

// For multi-repo, try to resolve url to be used in svn command (it is
not known by the xslt)
if (!strstr($repoparent,'@@') && strstr($repo,'@@')) {
if (isset($_REQUEST['reponame'])) {
$repo = $repoparent.'/'.$_REQUEST['reponame'];
} else if (isset($_SERVER['HTTP_REFERER'])) {
$referer = rawurldecode($_SERVER['HTTP_REFERER']);
if (preg_match('/:\/\/'.preg_quote($httpparent,'/').'([^\/]
+)/',$referer,$matches)) {
$reponame = $matches[1];
// make bookmarkable if possible
if (isset($_SERVER['SCRIPT_URI'])) {
header('Location: '.$_SERVER['SCRIPT_URI'].'?target='.rawurlencode
($target).'&reponame='.$reponame);
exit;
}
// not bookmarkable, continue with referer
$repo = $repoparent.'/'.$reponame;
}
}
if (strstr($repo,'@@')) die('Unable to resolve repository name for
this request, reponame must be set');
}

// === validate and run svn ===
if (strstr($repo,'@@')) die('The log script must be configured with a
root URL');
is_numeric($limit) or die('The log script must be configured with a
numeric limit');

$url = $repo . $target;

// command line, injection safe, svn must be in path, assumes utf-8
shell
$cmd = $svn.' log --xml --verbose --incremental --non-interactive';
$cmd .= ' --limit '.escapeshellarg($limit);
$cmd .= ' '.escapeshellarg($url);
$cmd .= ' 2>&1';

header('Content-Type: text/xml');
echo('<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="'.$xslt.'"?>
<log limit="'.$limit.'">
');
passthru($cmd);
echo('</log>
');
?>

[Kris]

I ran into the same trouble and solved the problem in a slightly
different way. This solution works if your repositories are located at
http://yourdomain/svn/... It checks whether the first part of the url
is equal to ‘svn’ and then sets reponame to whatever comes thereafter.
Here is the diff:

52,53c52,54
< if (preg_match('/\/([^\/]+)'.preg_quote
($target,'/').'\/?$/',$referer,$matches)) {
< $reponame = $matches[1];
---
> $matches = explode("/", $referer);
> if($matches[3] == "svn") {
> $reponame = $matches[4];