Your IP : 18.221.197.95
<?php
/**
* This file is part of Google SEO plugin for MyBB.
* Copyright (C) 2008-2011 Andreas Klauer <Andreas.Klauer@metamorpher.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))
{
die("Direct initialization of this file is not allowed.<br /><br />
Please make sure IN_MYBB is defined.");
}
/* --- Hooks: --- */
// Check current URL and redirect if necessary.
$plugins->add_hook("global_start", "google_seo_redirect_hook", 2);
/* --- Redirect: --- */
/**
* Obtain the current URL.
*
* @return current URL
*/
function google_seo_redirect_current_url()
{
global $settings;
// Determine http or https protocol. (Default whatever the bburl states.)
$page_url = parse_url($settings['bburl'], PHP_URL_SCHEME);
// Option 1: use HTTPS header
if($settings['google_seo_redirect_https'] == 'HTTPS') {
$page_url = "http";
if($_SERVER['HTTPS'] != "off" && ($_SERVER['HTTPS'] || $_SERVER['SERVER_PORT'] == 443))
{
$page_url = "https";
}
}
// Option 2: use FORWARDED_PROTO header (only if set, else ignore)
else if($settings['google_seo_redirect_https'] == 'HTTP_X_FORWARDED_PROTO') {
if($_SERVER['HTTP_X_FORWARDED_PROTO']) {
$page_url = $_SERVER['HTTP_X_FORWARDED_PROTO'];
}
}
$page_url .= '://';
// Determine the current page URL.
$page_url .= $_SERVER["HTTP_HOST"];
$request_uri = explode('?', $_SERVER["REQUEST_URI"], 2);
$request_uri[0] = urldecode($request_uri[0]);
$request_uri = implode('?', $request_uri);
$page_url .= $request_uri;
return $page_url;
}
/**
* Redirect if necessary.
*
*/
function google_seo_redirect_hook()
{
global $db, $mybb, $settings, $plugins, $google_seo_redirect;
if($mybb->request_method == "post")
{
// Never touch posts.
return;
}
// Build the target URL we should be at:
switch(THIS_SCRIPT)
{
case 'forumdisplay.php':
$fid = (int)$mybb->input['fid'];
$page = (int)$mybb->input['page'];
if($fid)
{
// forum as index tweak
if($fid == $settings['google_seo_tweak_index_fid'])
{
$target = "";
if($page > 1)
{
$target = "?page={$page}";
}
}
// regular
else
{
$target = get_forum_link($fid, $page);
}
$kill['fid'] = '';
$kill['page'] = '';
$kill['google_seo_forum'] = '';
$kill['google_seo'] = '';
}
break;
case 'showthread.php':
// pid overrules tid, so we must check pid first,
// even at the cost of an additional query.
if((int)$mybb->input['pid'])
{
$tid = google_seo_tid((int)$mybb->input['pid'],
(int)$mybb->input['tid'],
$settings['google_seo_redirect_posts']);
$target = get_post_link((int)$mybb->input['pid'], $tid);
$kill['pid'] = '';
$kill['tid'] = '';
$kill['google_seo_thread'] = '';
$kill['google_seo'] = '';
}
else if((int)$mybb->input['tid'])
{
$target = get_thread_link((int)$mybb->input['tid'],
(int)$mybb->input['page'],
(string)$mybb->input['action']);
$kill['tid'] = '';
$kill['action'] = '';
$kill['google_seo_thread'] = '';
$kill['google_seo'] = '';
if($mybb->input['page'] != 'last')
{
$kill['page'] = '';
}
}
break;
case 'announcements.php':
if((int)$mybb->input['aid'])
{
$target = get_announcement_link((int)$mybb->input['aid']);
$kill['aid'] = '';
$kill['google_seo_announcement'] = '';
$kill['google_seo'] = '';
}
break;
case 'member.php':
if((int)$mybb->input['uid'])
{
if($settings['google_seo_redirect_litespeed']
&& $mybb->input['action'] != 'profile')
{
// Work around rewrite bug in LiteSpeed (double action conflict).
break;
}
$target = get_profile_link((int)$mybb->input['uid']);
$kill['uid'] = '';
$kill['google_seo_user'] = '';
$kill['google_seo'] = '';
if($mybb->input['action'] == 'profile')
{
$kill['action'] = '';
}
}
break;
case 'calendar.php':
if((int)$mybb->input['eid'])
{
if($settings['google_seo_redirect_litespeed']
&& $mybb->input['action'] != 'profile')
{
// Work around rewrite bug in LiteSpeed (double action conflict).
break;
}
$target = get_event_link((int)$mybb->input['eid']);
$kill['eid'] = '';
$kill['google_seo_event'] = '';
$kill['google_seo'] = '';
if($mybb->input['action'] == 'event')
{
$kill['action'] = '';
}
}
else
{
if(!(int)$mybb->input['calendar'])
{
// Special case: Default calendar.
// Code taken from calendar.php
$query = $db->simple_select("calendars", "cid", "",
array('order_by' => 'disporder',
'limit' => 1));
$cid = $db->fetch_field($query, "cid");
$mybb->input['calendar'] = $cid;
}
if($mybb->input['action'] == "weekview")
{
$target = get_calendar_week_link((int)$mybb->input['calendar'],
(int)str_replace('n', '-', $mybb->input['week']));
$kill['calendar'] = '';
$kill['week'] = '';
$kill['action'] = '';
$kill['google_seo_calendar'] = '';
$kill['google_seo'] = '';
}
else
{
$target = get_calendar_link((int)$mybb->input['calendar'],
(int)$mybb->input['year'],
(int)$mybb->input['month'],
(int)$mybb->input['day']);
$kill['calendar'] = '';
$kill['year'] = '';
$kill['month'] = '';
$kill['day'] = '';
$kill['google_seo_calendar'] = '';
$kill['google_seo'] = '';
}
}
break;
}
// Verify that we are already at the target.
if(isset($target))
{
$target = $settings['bburl'].'/'.urldecode($target);
$current = google_seo_redirect_current_url();
// Not identical (although it may only be the query string).
if($current != $target)
{
// Parse current and target
$target_parse = explode("?", $target, 2);
$current_parse = explode("?", $current, 2);
// Location
$location_target = $target_parse[0];
$location_current = $current_parse[0];
// Fix broken query strings (e.g. search.php)
$broken_query = preg_replace("/\?([^&?=]+)([=&])/u",
'&$1$2',
$current_parse[1]);
if($current_parse[1] != $broken_query)
{
$change = 1;
$current_parse[2] = $current_parse[1];
$current_parse[1] = $broken_query;
}
// Query
$current_dynamic = google_seo_dynamic('?'.$current_parse[1]);
$target_dynamic = google_seo_dynamic('?'.$target_parse[1]);
parse_str(htmlspecialchars_decode($target_parse[1]), $query_target);
parse_str($current_parse[1], $query_current);
if(@get_magic_quotes_gpc())
{
// Dear PHP, I don't need magic, thank you very much.
$mybb->strip_slashes_array($query_target);
$mybb->strip_slashes_array($query_current);
}
$query = $query_current;
// Kill query string elements that already are part of the URL.
if(!$query[$target_dynamic])
{
unset($query[$target_dynamic]);
unset($query_current[$target_dynamic]);
unset($query_target[$target_dynamic]);
}
if(!$query[$current_dynamic])
{
unset($query[$current_dynamic]);
unset($query_current[$current_dynamic]);
unset($query_target[$current_dynamic]);
}
foreach($kill as $k=>$v)
{
unset($query[$k]);
}
// Final query, current parameters retained
$query = array_merge($query_target, $query);
if(count($query) != count($query_current))
{
$change = 2;
}
else if($current_dynamic != $target_dynamic)
{
$change = 3;
}
else
{
foreach($query as $k=>$v)
{
if($query_current[$k] != $v)
{
$change = 4;
}
}
}
// Definitely not identical?
if($change || $location_target != $location_current)
{
// Check if redirect debugging is enabled.
if($settings['google_seo_redirect_debug']
&& $mybb->usergroup['cancp'] == 1)
{
if($query['google_seo_redirect'])
{
// print out information about this redirect and return
header("Content-type: text/html; charset=UTF-8");
echo "<pre style=\"text-align: left\">";
echo "Google SEO Redirect Debug Information:\n";
echo "!!! WARNING: This may contain cookie authentication data. Don't post debug info in public. !!!\n";
echo htmlspecialchars(
print_r(
array(
'THIS_SCRIPT' => THIS_SCRIPT,
'_SERVER' => array_merge($_SERVER, array('HTTP_COOKIE' => '')),
'mybb->input' => $mybb->input,
'kill' => $kill,
'target' => $target,
'current' => $current,
'target_parse' => $target_parse,
'current_parse' => $current_parse,
'target_dynamic' => $target_dynamic,
'current_dynamic' => $current_dynamic,
'location_target' => $location_target,
'location_current' => $location_current,
'broken_query' => $broken_query,
'change' => $change,
'query_target' => $query_target,
'query_current' => $query_current,
'query' => $query,
),
true),
ENT_COMPAT, "UTF-8");
echo "</pre>";
return;
}
else
{
$query['google_seo_redirect'] = "debug";
}
}
// Redirect but retain query.
$querystr = array();
if($target_dynamic)
{
$querystr[] = google_seo_encode($target_dynamic);
}
foreach($query as $k=>$v)
{
if(is_array($v)) {
foreach($v as $arrk=>$arrv) {
$querystr[] = urlencode($k)."[".urlencode($arrk)."]=".urlencode($arrv);
}
} else {
$querystr[] = urlencode($k)."=".urlencode($v);
}
}
$location_target = google_seo_encode($location_target);
if(count($querystr))
{
$location_target .= "?" . implode("&", $querystr);
}
$google_seo_redirect = $location_target;
if($settings['google_seo_redirect_permission'] &&
THIS_SCRIPT != "member.php")
{
// Leave permission checks to the current page.
// Add hooks to issue redirect later on.
$plugins->add_hook("forumdisplay_end", "google_seo_redirect_header", 2);
$plugins->add_hook("postbit", "google_seo_redirect_header", 2);
$plugins->add_hook("postbit_announcement", "google_seo_redirect_header", 2);
$plugins->add_hook("calendar_editevent_end", "google_seo_redirect_header", 2);
$plugins->add_hook("calendar_event_end", "google_seo_redirect_header", 2);
$plugins->add_hook("calendar_end", "google_seo_redirect_header", 2);
$plugins->add_hook("pre_output_page", "google_seo_redirect_header", 2);
// Except on error.
$plugins->add_hook("error", "google_seo_redirect_remove_hooks", 2);
$plugins->add_hook("no_permission", "google_seo_redirect_remove_hooks", 2);
}
else
{
google_seo_redirect_header();
}
}
}
}
}
function google_seo_redirect_header()
{
global $plugins, $google_seo_redirect;
// Issue the redirect.
header("Location: {$google_seo_redirect}", true, 301);
// Only exit if the headers haven't been sent yet.
// (i.e. if the headers will be sent on exit).
if(!headers_sent())
{
// Hack to prevent any unnecessary queries.
// (Fixes thread views increase by 2 on redirect issue.)
global $shutdown_queries;
$shutdown_queries = array();
// Exit here, see you at the redirect target.
exit;
}
// Otherwise let the page load normally, but the above
// call to header will also display a warning message.
google_seo_redirect_remove_hooks();
}
function google_seo_redirect_remove_hooks()
{
global $plugins;
// Remove hooks to prevent getting called again.
$plugins->remove_hook("forumdisplay_end", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("postbit", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("postbit_announcement", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("calendar_editevent_end", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("calendar_event_end", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("calendar_end", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("pre_output_page", "google_seo_redirect_header", "", 2);
$plugins->remove_hook("error", "google_seo_redirect_remove", "", 2);
$plugins->remove_hook("no_permission", "google_seo_redirect_remove", "", 2);
}
/* --- End of file. --- */
?>