Textpattern Support Forum

Hi,

Textpattern articles are currently reachable via several different URL paths. For example:

http://example.com/article/5/
http://example.com/article/5/article-title
http://example.com/article/5/old-article-title-before-i-renamed-it-to-something-shorter

External factors can multiply these (e.g. www.example.com vs. example.com).

This can cause problems with search engines and link aggregators, since they don’t have any way of knowing that all of these URLs represent the same page (as opposed to multiple pages with identical content).

txp:zem_redirect is designed to help reduce the problem a bit. It checks the URL used to fetch each article; if it doesn’t match the correct URL for the article (including the article-title and full hostname as specified in the Textpattern config), it’ll return a 301 Moved Permanently response to direct the user’s browser to the correct URL. It also works as a 404 handler for articles that don’t exist or are not visible.

Just plonk the tag <txp:zem_redirect /> at the top of your article page, and it’ll do the rest. It must be the very first tag on the page, before the doctype. It has no effect in messy URL mode, or on pages other than individual articles.

warning – if you’re already using URL rewriting or other clever redirection, there’s a chance this could cause circular redirects. Test carefully, and don’t say I didn’t warn ye.

http://vigilant.tv/documents/tp/zem_redirect-0.5.txt

z.

As this plugin is no longer supported we provide it here

a:10:{s:4:"name";s:12:"zem_redirect";s:6:"author";s:11:"Alex Shiels";s:10:"author_uri";s:26:"http://thresholdstate.com/";s:7:"version";s:5:"1.2.1";s:11:"description";s:59:"Redirect Pro: handle incorrect, outdated and duplicate URLs";s:4:"help";s:297:"<p>This plug-in's help documents are available to paying subscribers only. <strong>New subscriptions are currently unavailable.</strong> Current subscribers can access the help documents by visiting: <a href="http://thresholdstate.com/subscribers/ ">http://thresholdstate.com/subscribers/ </a></p>";s:4:"code";s:5670:"/*

Copyright 2005-2007 Alex Shiels http://thresholdstate.com/

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.

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.

*/

function zem_redirect_fix_url($url, $debug=0) {
	$parts = parse_url($url);
	extract($parts);
	$q = preg_replace('@&amp;@', '&', @$query);
	$q = $q ? '?'.$q : '';

	$host = empty($scheme) ? serverSet('HTTP_HOST') : $host;
	$scheme = empty($scheme) ? 'http' : $scheme;
	$port = empty($port) ? '' : ':'.$port;

	return $scheme.'://'.$host.$port.'/'.ltrim($path, '/').$q;
}

function zem_redirect_send_headers($location, $type='', $debug=0) {
	global $prefs, $pretext;
	extract($prefs);

	if ($production_status == 'debug' or $debug) {
		echo '<div style="color:#000;background-color:#fee;">'
			.'zem_redirect: from <a href="'.$pretext['request_uri'].'">'.$pretext['request_uri'].'</a> to <a href="'.$location.'">'.$location.'</a></div>'.n;
		return $location;
	}
	else {
		if ($production_status == 'live') {
			if (!$type)
				$type = '301 Moved Permanently';
		}
		else
			$type = '302 Found';

		txp_status_header($type);
		header("Location: $location");
		ob_flush();
		exit;
	}

}


	function zem_redirect_url($test=0) {
		global $pretext, $siteurl, $path_from_root, $prefs;

		extract($prefs);

 		if (empty($permlink_mode)
 			or $permlink_mode == 'messy'
			or strcasecmp(serverSet('REQUEST_METHOD'), 'POST') == 0
			or gps('txpreview'))
 			return;


		$actual_host = serverSet("HTTP_HOST");
		$actual_path = ($test !== 0 ? $test : $pretext['request_uri']);
		$actual_url = 'http://'.$actual_host.$actual_path;
		$canonical_url = '';

		# other unknown query parameters might be used by plugins
		$get = gpsa(array_keys($_GET));
		if (!$get) $get = array();
		unset($get['id']);
		unset($get['s']);
		unset($get['c']);

		// remove bogus GET paramaters inserted by rss_unlimited_categories
		global $plugins;
		if (@in_array('rss_unlimited_categories', $plugins)) {
			unset($get['request_uri']);
			unset($get['qs']);
		}

		if (gps('atom') or gps('rss')) {
			$canonical_url = pagelinkurl($get);
		}
		elseif ($pretext['status'] == 404) {
			// url with subdir stripped
			$url = @$pretext['req'];

			if (preg_match('@/(\d{4})/(\d{2})/(\d{2})/([^/?]*)/?@', $url, $m)) {
				$when = $m[1].'-'.$m[2].'-'.$m[3];
				$rs = lookupByDateTitle($when,$m[4]);
				if (!$rs)
					$rs = lookupByTitle($m[4]);
			}
			elseif (preg_match('@/([^/]+)/(\d+)/([^/?]+)/?@', $url, $m)) {
				$rs = lookupByID($m[2]);
			}
			elseif (preg_match('@/([^/?]+)/([^/?]+)/?@', $url, $m)) {
				if (is_numeric($m[2]))
					$rs = lookupByID($m[2]);
				else {
					$rs = lookupByTitleSection($m[2], $m[1]);
					if (!$rs)
						$rs = lookupByTitle($m[2]);
				}
			}
			elseif (preg_match('@/([^/?]+)/?@', $url, $m)) {
				$rs = lookupByTitle($m[1]);
			}

			if ($rs) {
				$canonical_url = permlinkurl_id($rs['ID']) . join_qs($get);
			}
			else {
				return;
			}
		}
		elseif ($pretext['s'] == 'file_download') {
			return;
		}
		elseif ($pretext['month'] and $permlink_mode == 'year_month_day_title') {
			return;
		}
		elseif ($pretext["id"]) {
			# Article page
			$parts = parse_url($pretext['req']);
			if (isset($parts['path'])) {
				$pathinfo = pathinfo($parts['path']);
				if (!empty($pathinfo['extension']) and $pathinfo['basename'] != 'index.php') {
					return;
				}
			}
			$id = safe_field("ID","textpattern","ID='".doSlash($pretext["id"])."' and Status IN ('4', '5') limit 1");
			if ($id) {
				$canonical_url = permlinkurl_id($id);
			}

			# reattach messy URL parameters, if any
			$canonical_url .= join_qs($get);
		}
		else {
			# List page
			$canonical_url = pagelinkurl($get, array('s'=>$pretext['s'], 'c'=>$pretext['c']));
		}

		if ($canonical_url) {

			# fix up ampersands
			$canonical_url = zem_redirect_fix_url($canonical_url);
			if ($actual_url != $canonical_url) {
				return zem_redirect_send_headers($canonical_url, '301 Moved Permanently', $test !== 0);
			}
		}

	}


function zem_redirect_handler($event, $step) {
	if ($event == 'textpattern')
		zem_redirect_url();
}

register_callback('zem_redirect_handler', 'textpattern');

if (txpinterface == 'public' and (gps('atom') or gps('rss'))) {
	zem_redirect_url();
}


function zem_redirect($atts) {
	global $pretext;

	extract(lAtts(array(
		'to' => '',
		'from' => '',
		'debug' => 0,
		'type' => '302',
	), $atts));

	$to = trim($to);
	$from = trim($from);


	$dest = '';
	if ($from and $to) {
		$from = addcslashes($from, '@');
		$to = addcslashes($to, '@');
		if (preg_match('@'.$from.'@', $pretext['request_uri'])) {
			$out = preg_replace('@'.$from.'@', $to, $pretext['request_uri']);
			$dest = zem_redirect_fix_url($out, $debug);
		}
	}
	elseif ($to) {
		$dest = zem_redirect_fix_url($to, $debug);
	}
	else {
		trigger_error('No destination specified');
	}

	$actual_host = serverSet("HTTP_HOST");
	$actual_path = ($test !== 0 ? $test : $pretext['request_uri']);
	$actual_url = 'http://'.$actual_host.$actual_path;

	if ($dest and $dest != $actual_url) {
		$status = ($type == '301' ? '301 Moved Permanently' : '302 Found');
		return zem_redirect_send_headers($dest, $status, $debug);
	}

}
";s:4:"type";s:1:"0";s:5:"order";s:1:"5";s:3:"md5";s:32:"d3e364be665cd83c521eaf87b247432f";}

Last edited by zem (2004-07-10 02:53:25)