/**
* Finalize URLs. (Lowercase step done by the caller.)
*
* @param string URL to be finalized.
* @param string Scheme to be used for this URL.
* @return string Finalized URL.
*/
function google_seo_url_finalize($url, $scheme)
{
global $settings;
$url = google_seo_expand($scheme, array('url' => $url));
$test = explode('?', $url);
$test = explode('/', $test[0]);
foreach ($test as $element) {
/**
* Maximum URL length hack.
*
* Most hosts do not allow for filenames > 255 bytes in URLs.
* Trying to access such an URL results in 403 Forbidden.
*
* Since MyBB already limits length of user names and topic
* subjects this is normally not a problem. However it is still
* possible to hit the limit with UTF-8 multibyte characters.
*
* This hack causes Google SEO to fall back to stock URLs in
* the rare case where the Google SEO URL would be unuseable.
*
*/
if (strlen($element) >= 256) {
return 0;
}
}
$url = google_seo_encode($url);
return $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}";
}
} 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 {
$query['google_seo_redirect'] = "debug";
}
}
// Redirect but retain query.
if ($target_dynamic) {
$querystr[] = google_seo_encode($target_dynamic);
}
foreach ($query as $k => $v) {
$querystr[] = urlencode($k) . "=" . urlencode($v);
}
$location_target = google_seo_encode($location_target);
if (sizeof($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();
}
}
}
}
}
