<?php
// project name
$projects = array('mon-super-projet');
 
// google code webhook key
$keys = array(
	'b-box'	=> 'Top-Secret_key_fourni_par_google-dans-l-adminsitration'
);
 
//user agent from google code
$useragent = 'Google Code Project Hosting (+http://code.google.com/p/support/wiki/PostCommitWebHooks)';
 
//email of all owner (eg. project chief)
$owners = array('vous@example.com');
 
//email of all team members except owners
$users = array('toi@example.com');
 
//sender of email
$sender = 'WebHook mailer<webmaster@exemple.com>';
 
//----------------------------------------------------------------------
$project = (isset($_GET['p']))?$_GET['p']:'';
$revision = (isset($_GET['r']))?intval($_GET['r']):-99;
$data = file_get_contents('php://input');
$digest = (isset($_SERVER['HTTP_GOOGLE_CODE_PROJECT_HOSTING_HOOK_HMAC']))?$_SERVER['HTTP_GOOGLE_CODE_PROJECT_HOSTING_HOOK_HMAC']:'';
 
//----------------------------------------------------------------------
/**
 * Send a mail
 * @param string $from email of the sender : sample@example.com or "name"<sample@example.com>;
 * @param array $to [a] => list of email [cc], [bcc] (hidden), ...
 * @param string $subject
 * @param string $body
 * @return bool true if success
 */
function mailer($from, array $to, $subject, $body)
{
	if (empty($to))
	{
		return false;
	}
 
	$headers = 'From: ' . $from . "\n";
 
	$a = '';
 
	if (isset($to['a']) &amp;&amp; !empty($to['a']))
	{
		$a = implode(',', $to['a']);
	}
 
	if (isset($to['bcc']) &amp;&amp; !empty($to['bcc']))
	{
		$headers .= 'Bcc: ' . implode(',', $to['bcc']) . "\n";
	}
 
	if (isset($to['cc']) &amp;&amp; !empty($to['cc']))
	{
		$headers .= 'Cc: ' . implode(',', $to['cc']) . "\n";
	}
 
	$headers .= 'MIME-Version: 1.0' . "\n";
	$headers .= 'Content-Type: text/plain; charset="UTF-8"' . "\n";
	$headers .= 'Content-Transfer-Encoding: 8bit' . "\n";
	$headers .= 'X-Mailer: PHP/' . phpversion();
 
	return mail($a, '[webhook]' . $subject, $body, $headers);
}
 
function failed($test_id, $msg)
{
	global $sender, $owners;
 
	$msg .= "\n--\nWebHook mail from the Google code project";
 
	mailer($sender, array('bcc' => $owners), 'failed test #' . $test_id, $msg);
 
	die('KO');
}
 
function get_ip()
{ 
	return (isset($_SERVER['HTTP_X_FORWARDED_FOR']))?$_SERVER['HTTP_X_FORWARDED_FOR']:(isset($_SERVER['HTTP_CLIENT_IP']))?$_SERVER['HTTP_CLIENT_IP']:$_SERVER['REMOTE_ADDR'];
}
 
//----------------------------------------------------------------------
if ($useragent != $_SERVER['HTTP_USER_AGENT'])
{
	// failed 1
	failed(1, 'User agent is bad : ' . htmlspecialchars($_SERVER['HTTP_USER_AGENT']) . "\n\nFrom : " . get_ip());
}
elseif (empty($project) || !in_array($project, $projects))
{
	// failed 2
	failed(2, 'No project set : ' . htmlspecialchars($project) . "\n\nFrom : " . get_ip());
}
else
{
	$hmac = hash_hmac('md5', $data, $keys[ $project ]);
	$data = json_decode($data, true);
 
	if (empty($digest) || $digest != $hmac)
	{
		// failed 3
		failed(3, 'Bad digest : ' . $digest . ' vs ' . $hmac . "\n\nFrom : " . get_ip());
	}
	elseif (intval($data['revision_count']) != count($data['revisions']))
	{
		// failed 4
		failed(4, 'Bad count : ' . count($data['revisions']) . ' vs ' . intval($data['revision_count']) . "\n\nFrom : " . get_ip());
	}
	else
	{
		$mail_body = '';
		foreach($data['revisions'] as $_revision)
		{
			$mail_body .= 'Revision : ' . "\t" . htmlentities($_revision['revision']) . ' from ' . htmlentities($_revision['author']) . ' at ' . date('Y-m-d H:i', intval($_revision['timestamp'])) . "\n";
			$mail_body .= 'Added : ' . "\t" . implode("\n\t\t", htmlentities($_revision['added'])) . "\n";
			$mail_body .= 'Modified : ' . "\t" . implode("\n\t\t\t", htmlentities($_revision['modified'])) . "\n";
			$mail_body .= 'Removed : ' . "\t" . implode("\n\t\t\t", htmlentities($_revision['removed'])) . "\n\n";
//			$mail_body .= 'URL : ' . "\t\t" . htmlentities($_revision['url']) . "\n\n";
			$mail_body .= 'Message : ' . "\t" . htmlentities($_revision['message']) . "\n\n\n";
//			$_revision['path_count'];
		}
		$mail_body .= "\n--\nWebHook mail from the Google code project : " . $project . "\nhttp://code.google.com/p/" . $project . "/\n";
 
		mailer($sender, array('bcc' => $owners + $users), '[' . $project . ']New revision #' . $revision, $mail_body);
	}
}
 
exit('OK');
 
# EOF