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mt.php.pre @ 1726

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Revision 1726, 29.9 kB (checked in by bchoate, 20 months ago)
Set template identifier variable and system_template for dynamic error and search result templates. BugId:69530
Property svn:keywords set to `Author Date Id Revision`

Line
1	<?php
2	# Movable Type (r) Open Source (C) 2004-2008 Six Apart, Ltd.
3	# This program is distributed under the terms of the
4	# GNU General Public License, version 2.
5	#
6	# $Id$
7
8	define('VERSION', '__API_VERSION__');
9	define('VERSION_ID', '__PRODUCT_VERSION_ID__');
10	define('PRODUCT_VERSION', '__PRODUCT_VERSION__');
11	define('PRODUCT_NAME', '__PRODUCT_NAME__');
12
13	global $Lexicon;
14	$Lexicon = array();
15
16	class MT {
17	var $mime_types = array(
18	'__default__' => 'text/html',
19	'css' => 'text/css',
20	'txt' => 'text/plain',
21	'rdf' => 'text/xml',
22	'rss' => 'text/xml',
23	'xml' => 'text/xml',
24	);
25	var $blog_id;
26	var $db;
27	var $config;
28	var $debugging = false;
29	var $caching = false;
30	var $conditional = false;
31	var $log = array();
32	var $id;
33	var $request;
34	var $http_error;
35	var $cfg_file;
36	var $cache_driver;
37
38	/***
39	* Constructor for MT class. Also declares a global variable
40	* '$mt' and assigns itself to that. There can only be one
41	* instance of this class.
42	*/
43	function MT($blog_id = null, $cfg_file = null) {
44	error_reporting(E_ALL ^ E_NOTICE);
45	global $mt;
46	if (isset($mt)) {
47	die("Only one instance of the MT class can be created.");
48	}
49	$this->id = md5(uniqid('MT',true));
50	$this->init($blog_id, $cfg_file);
51	}
52
53	function init($blog_id = null, $cfg_file = null) {
54	if (isset($blog_id)) {
55	$this->blog_id = $blog_id;
56	}
57
58	if (!file_exists($cfg_file)) {
59	$mtdir = dirname(dirname(__FILE__));
60	$cfg_file = $mtdir . DIRECTORY_SEPARATOR . "mt-config.cgi";
61	}
62
63	$this->configure($cfg_file);
64	$this->init_addons();
65	$this->configure_from_db();
66
67	$lang = substr(strtolower($this->config('DefaultLanguage')), 0, 2);
68	if (!@include_once("l10n_$lang.php"))
69	include_once("l10n_en.php");
70
71	if (extension_loaded('mbstring')) {
72	$charset = $this->config('PublishCharset');
73	mb_internal_encoding($charset);
74	mb_http_output($charset);
75	}
76	}
77
78	function init_addons() {
79	$mtdir = dirname(dirname(__FILE__));
80	$path = $mtdir . DIRECTORY_SEPARATOR . "addons";
81	if (is_dir($path)) {
82	$ctx =& $this->context();
83	if ($dh = opendir($path)) {
84	while (($file = readdir($dh)) !== false) {
85	if ($file == "." \|\| $file == "..") {
86	continue;
87	}
88	$plugin_dir = $path . DIRECTORY_SEPARATOR . $file
89	. DIRECTORY_SEPARATOR . 'php';
90	if (is_dir($plugin_dir))
91	$ctx->add_plugin_dir($plugin_dir);
92	}
93	closedir($dh);
94	}
95	}
96	}
97
98	function init_plugins() {
99	$plugin_paths = $this->config('PluginPath');
100	$ctx =& $this->context();
101
102	foreach ($plugin_paths as $path) {
103	if ($dh = opendir($path)) {
104	while (($file = readdir($dh)) !== false) {
105	if ($file == "." \|\| $file == "..")
106	continue;
107	$plugin_dir = $path . DIRECTORY_SEPARATOR . $file
108	. DIRECTORY_SEPARATOR . 'php';
109	if (is_dir($plugin_dir))
110	$ctx->add_plugin_dir($plugin_dir);
111	}
112	closedir($dh);
113	}
114	}
115
116	$plugin_dir = $this->config('PHPDir') . DIRECTORY_SEPARATOR
117	. 'plugins';
118	if (is_dir($plugin_dir))
119	$ctx->add_plugin_dir($plugin_dir);
120
121	# Load any php directories found during the 'init_addons' loop
122	foreach ($ctx->plugins_dir as $plugin_dir)
123	if (is_dir($plugin_dir))
124	$this->load_plugin($plugin_dir);
125	}
126
127	function load_plugin($plugin_dir) {
128	$ctx =& $this->context();
129	// global filters have to be handled differently from
130	// tag attributes, so this causes them to be recognized
131	// as they should...
132	if ($dh = opendir($plugin_dir)) {
133	while (($file = readdir($dh)) !== false) {
134	if (preg_match('/^modifier\.(.+?)\.php$/', $file, $matches)) {
135	$ctx->add_global_filter($matches[1]);
136	} elseif (preg_match('/^init\.(.+?)\.php$/', $file, $matches)) {
137	// load 'init' plugin file
138	require_once($file);
139	}
140	}
141	closedir($dh);
142	}
143	}
144
145	/***
146	* Retreives a handle to the database and assigns it to
147	* the member variable 'db'.
148	*/
149	function &db() {
150	if (isset($this->db)) return $this->db;
151
152	require_once("mtdb_".$this->config('DBDriver').".php");
153	$mtdbclass = 'MTDatabase_'.$this->config('DBDriver');
154	$this->db = new $mtdbclass($this->config('DBUser'),
155	$this->config('DBPassword'), $this->config('Database'),
156	$this->config('DBHost'), $this->config('DBPort'), $this->config('DBSocket'));
157	return $this->db;
158	}
159
160	/***
161	* Retreives a handle to the cache driver.
162	*/
163	function &cache_driver() {
164	if (isset($this->cache_driver)) return $this->cache_driver;
165
166	# Check for memcached enabled
167	$servers = $this->config['MemcachedServers'];
168	if (isset($servers)) {
169	if (extension_loaded('memcache')) {
170	require_once("MTCache_memcached.php");
171	$this->cache_driver = new MTCache_memcached($servers);
172	}
173	} else {
174	require_once("MTCache_session.php");
175	$this->cache_driver = new MTCache_session();
176	}
177	return $this->cache_driver;
178	}
179
180	function config($id, $value = null) {
181	$id = strtolower($id);
182	if (isset($value))
183	$this->config[$id] = $value;
184	return $this->config[$id];
185	}
186
187	/***
188	* Loads configuration data from mt.cfg and mt-db-pass.cgi files.
189	* Stores content in the 'config' member variable.
190	*/
191	function configure($file = null) {
192	if (isset($this->config)) return $config;
193
194	$this->cfg_file = $file;
195
196	$cfg = array();
197	$type_array = array('pluginpath', 'alttemplate', 'outboundtrackbackdomains', 'memcachedservers');
198	if ($fp = file($file)) {
199	foreach ($fp as $line) {
200	// search through the file
201	if (!ereg('^\s*\#',$line)) {
202	// ignore lines starting with the hash symbol
203	if (preg_match('/^\s(\S+)\s+(.)$/', $line, $regs)) {
204	$key = strtolower(trim($regs[1]));
205	$value = trim($regs[2]);
206	if (in_array($key, $type_array)) {
207	$cfg[$key][] = $value;
208	} else {
209	$cfg[$key] = $value;
210	}
211	}
212	}
213	}
214	} else {
215	die("Unable to open configuration file $file");
216	}
217
218	// setup directory locations
219	// location of mt.php
220	$cfg['phpdir'] = realpath(dirname(__FILE__));
221	// path to MT directory
222	$cfg['mtdir'] = realpath(dirname($file));
223	// path to handlers
224	$cfg['phplibdir'] = $cfg['phpdir'] . DIRECTORY_SEPARATOR . 'lib';
225
226	$cfg['dbhost'] or $cfg['dbhost'] = 'localhost'; // default to localhost
227	$driver = $cfg['objectdriver'];
228	$driver = preg_replace('/^DB[ID]::/', '', $driver);
229	$driver or $driver = 'mysql';
230	$cfg['dbdriver'] = strtolower($driver);
231
232	if ((strlen($cfg['database'])<1 \|\| strlen($cfg['dbuser'])<1)) {
233	if (($cfg['dbdriver'] != 'sqlite') && ($cfg['dbdriver'] != 'mssqlserver')) {
234	die("Unable to read database or username");
235	}
236	}
237
238	$this->config =& $cfg;
239	$this->config_defaults();
240
241	// read in the database password
242	if (!isset($cfg['dbpassword'])) {
243	$db_pass_file = $cfg['mtdir'] . DIRECTORY_SEPARATOR . 'mt-db-pass.cgi';
244	if (file_exists($db_pass_file)) {
245	$password = implode('', file($db_pass_file));
246	$password = trim($password, "\n\r\0");
247	$cfg['dbpassword'] = $password;
248	}
249	}
250
251	// set up include path
252	// add MT-PHP 'plugins' and 'lib' directories to the front
253	// of the existing PHP include path:
254	if (strtoupper(substr(PHP_OS, 0,3) == 'WIN')) {
255	$path_sep = ';';
256	} else {
257	$path_sep = ':';
258	}
259	ini_set('include_path',
260	$cfg['phpdir'] . DIRECTORY_SEPARATOR . "lib" . $path_sep .
261	$cfg['phpdir'] . DIRECTORY_SEPARATOR . "extlib" . $path_sep .
262	$cfg['phpdir'] . DIRECTORY_SEPARATOR . "extlib" . DIRECTORY_SEPARATOR . "smarty" . DIRECTORY_SEPARATOR . "libs" . $path_sep .
263	ini_get('include_path')
264	);
265	}
266
267	function configure_from_db() {
268	$cfg =& $this->config;
269	$mtdb =& $this->db();
270	$db_config = $mtdb->fetch_config();
271	if ($db_config) {
272	$data = $db_config['config_data'];
273	$data = preg_split('/[\r?\n]/', $data);
274	foreach ($data as $line) {
275	// search through the file
276	if (!ereg('^\s*\#',$line)) {
277	// ignore lines starting with the hash symbol
278	if (preg_match('/^\s(\S+)\s+(.)$/', $line, $regs)) {
279	$key = strtolower(trim($regs[1]));
280	$value = trim($regs[2]);
281	if (($key == 'PluginSwitch') \|\| ($key == 'PluginSchemaVersion')) { # special case for hash
282	if (preg_match('/^(.+)=(.+)$/', $value, $match))
283	$cfg[$key][trim($match[1])] = trim($match[2]);
284	} else {
285	$cfg[$key] or $cfg[$key] = $value;
286	}
287	}
288	}
289	}
290	if ($cfg['dbdriver'] == 'mysql' or $cfg['dbdriver'] == 'postgres') {
291	if ($cfg['sqlsetnames']) {
292	$Charset = array(
293	'postgres' => array('utf-8' => 'UNICODE', 'shift_jis' => 'SJIS', 'euc-jp' => 'EUC_JP'),
294	'mysql' => array('utf-8' => 'utf8', 'shift_jis' => 'sjis', 'euc-jp' => 'ujis'));
295	$lang = $Charset[$cfg['dbdriver']][strtolower($cfg['publishcharset'])];
296	if ($lang) {
297	$mtdb->query("SET NAMES '$lang'");
298	}
299	}
300	}
301	}
302	}
303
304	function config_defaults() {
305	$cfg =& $this->config;
306	// assign defaults:
307	if (substr($cfg['cgipath'], strlen($cfg['cgipath']) - 1, 1) != '/')
308	$cfg['cgipath'] .= '/';
309	isset($cfg['staticwebpath']) or
310	$cfg['staticwebpath'] = $cfg['cgipath'] . 'mt-static/';
311	isset($cfg['publishcharset']) or
312	$cfg['publishcharset'] = '__PUBLISH_CHARSET__';
313	isset($cfg['trackbackscript']) or
314	$cfg['trackbackscript'] = 'mt-tb.cgi';
315	isset($cfg['adminscript']) or
316	$cfg['adminscript'] = 'mt.cgi';
317	isset($cfg['commentscript']) or
318	$cfg['commentscript'] = 'mt-comments.cgi';
319	isset($cfg['atomscript']) or
320	$cfg['atomscript'] = 'mt-atom.cgi';
321	isset($cfg['xmlrpcscript']) or
322	$cfg['xmlrpcscript'] = 'mt-xmlrpc.cgi';
323	isset($cfg['searchscript']) or
324	$cfg['searchscript'] = 'mt-search.cgi';
325	isset($cfg['defaultlanguage']) or
326	$cfg['defaultlanguage'] = '__BUILD_LANGUAGE__';
327	isset($cfg['globalsanitizespec']) or
328	$cfg['globalsanitizespec'] = 'a href,b,i,br/,p,strong,em,ul,ol,li,blockquote,pre';
329	isset($cfg['signonurl']) or
330	$cfg['signonurl'] = 'https://www.typekey.com/t/typekey/login?';
331	isset($cfg['signoffurl']) or
332	$cfg['signoffurl'] = 'https://www.typekey.com/t/typekey/logout?';
333	isset($cfg['identityurl']) or
334	$cfg['identityurl'] = 'http://profile.typekey.com/';
335	isset($cfg['publishcommentericon']) or
336	$cfg['publishcommentericon'] = '1';
337	isset($cfg['allowcomments']) or
338	$cfg['allowcomments'] = '1';
339	isset($cfg['allowpings']) or
340	$cfg['allowpings'] = '1';
341	isset($cfg['indexbasename']) or
342	$cfg['indexbasename'] = 'index';
343	isset($cfg['typekeyversion']) or
344	$cfg['typekeyversion'] = '1.1';
345	isset($cfg['assetcachedir']) or
346	$cfg['assetcachedir'] = 'assets_c';
347	isset($cfg['userpicthumbnailsize']) or
348	$cfg['userpicthumbnailsize'] = '100';
349	isset($cfg['pluginpath']) or
350	$cfg['pluginpath'] = array($this->config('MTDir') . DIRECTORY_SEPARATOR . 'plugins');
351	isset($cfg['timeoffset']) or
352	$cfg['timeoffset'] = '__DEFAULT_TIMEZONE__';
353	}
354
355	function configure_paths($blog_site_path) {
356	if (preg_match('/^\./', $blog_site_path)) {
357	// relative address, so tack on the MT dir in front
358	$blog_site_path = $this->config('MTDir') .
359	DIRECTORY_SEPARATOR . $blog_site_path;
360	}
361	$this->config('PHPTemplateDir') or
362	$this->config('PHPTemplateDir', $blog_site_path .
363	DIRECTORY_SEPARATOR . 'templates');
364	$this->config('PHPCacheDir') or
365	$this->config('PHPCacheDir', $blog_site_path .
366	DIRECTORY_SEPARATOR . 'cache');
367
368	$ctx =& $this->context();
369	$ctx->template_dir = $this->config('PHPTemplateDir');
370	$ctx->compile_dir = $ctx->template_dir . '_c';
371	$ctx->cache_dir = $this->config('PHPCacheDir');
372	}
373
374	/***
375	* Mainline handler function.
376	*/
377	function view($blog_id = null) {
378	if ($this->debugging) {
379	require_once("MTUtil.php");
380	}
381	$blog_id or $blog_id = $this->blog_id;
382
383	$ctx =& $this->context();
384	$this->init_plugins();
385	$ctx->caching = $this->caching;
386
387	// Some defaults...
388	$mtdb =& $this->db();
389	$ctx->mt->db =& $mtdb;
390
391	// Set up our customer error handler
392	set_error_handler(array(&$this, 'error_handler'));
393
394	// User-specified request through request variable
395	$path = $this->request;
396
397	// Apache request
398	if (!$path && $_SERVER['REQUEST_URI']) {
399	$path = $_SERVER['REQUEST_URI'];
400	// strip off any query string...
401	$path = preg_replace('/\?.*/', '', $path);
402	// strip any duplicated slashes...
403	$path = preg_replace('!/+!', '/', $path);
404	}
405
406	// IIS request by error document...
407	if (preg_match('/IIS/', $_SERVER['SERVER_SOFTWARE'])) {
408	// assume 404 handler
409	if (preg_match('/^\d+;(.*)$/', $_SERVER['QUERY_STRING'], $matches)) {
410	$path = $matches[1];
411	$path = preg_replace('!^http://[^/]+!', '', $path);
412	if (preg_match('/\?(.+)?/', $path, $matches)) {
413	$_SERVER['QUERY_STRING'] = $matches[1];
414	$path = preg_replace('/\?.*$/', '', $path);
415	}
416	}
417	}
418
419	// now set the path so it may be queried
420	$this->request = $path;
421
422	// When we are invoked as an ErrorDocument, the parameters are
423	// in the environment variables REDIRECT_*
424	if (isset($_SERVER['REDIRECT_QUERY_STRING'])) {
425	// todo: populate $_GET and QUERY_STRING with REDIRECT_QUERY_STRING
426	$_SERVER['QUERY_STRING'] = getenv('REDIRECT_QUERY_STRING');
427	}
428
429	if (preg_match('/\.(\w+)$/', $path, $matches)) {
430	$req_ext = strtolower($matches[1]);
431	}
432
433	$this->blog_id = $blog_id;
434
435	$data =& $this->resolve_url($path);
436	if (!$data) {
437	// 404!
438	$this->http_error = 404;
439	header("HTTP/1.1 404 Not found");
440	return $ctx->error("Page not found - $path", E_USER_ERROR);
441	}
442
443	$info =& $data['fileinfo'];
444	$fi_path = $info['fileinfo_url'];
445	$fid = $info['fileinfo_id'];
446	$at = $info['fileinfo_archive_type'];
447	$ts = $info['fileinfo_startdate'];
448	$tpl_id = $info['fileinfo_template_id'];
449	$cat = $info['fileinfo_category_id'];
450	$auth = $info['fileinfo_author_id'];
451	$entry_id = $info['fileinfo_entry_id'];
452	$blog_id = $info['fileinfo_blog_id'];
453	$blog =& $data['blog'];
454	if ($at == 'index') {
455	$at = null;
456	$ctx->stash('index_archive', true);
457	} else {
458	$ctx->stash('index_archive', false);
459	}
460	$tts = $data['template']['template_modified_on'];
461	if ($tts) {
462	$tts = offset_time(datetime_to_timestamp($tts), $blog);
463	}
464	$ctx->stash('template_timestamp', $tts);
465	$ctx->stash('template_created_on', $data['template']['template_created_on']);
466
467	$columns_map = array(
468	'layout-wt' => 2,
469	'layout-tw' => 2,
470	'layout-wm' => 2,
471	'layout-mw' => 2,
472	'layout-wtt' => 3,
473	'layout-twt' => 3);
474	$page_layout = $data['blog']['blog_page_layout'];
475	$columns = 0;
476	if(array_key_exists($page_layout, $columns_map))
477	$columns = $columns_map[$page_layout];
478	$vars =& $ctx->__stash['vars'];
479	$vars['page_columns'] = $columns;
480	$vars['page_layout'] = $page_layout;
481
482	$this->configure_paths($blog['blog_site_path']);
483
484	// start populating our stash
485	$ctx->stash('blog_id', $blog_id);
486	$ctx->stash('blog', $blog);
487	$ctx->stash('build_template_id', $tpl_id);
488
489	// conditional get support...
490	if ($this->caching) {
491	$this->cache_modified_check = true;
492	}
493	if ($this->conditional) {
494	$last_ts = $blog['blog_children_modified_on'];
495	$last_modified = $ctx->_hdlr_date(array('ts' => $last_ts, 'format' => '%a, %d %b %Y %H:%M:%S GMT', 'language' => 'en', 'utc' => 1), $ctx);
496	$this->doConditionalGet($last_modified);
497	}
498
499	$cache_id = $blog_id.';'.$fi_path;
500	if (!$ctx->is_cached('mt:'.$tpl_id, $cache_id)) {
501	if (isset($at) && ($at != 'Category')) {
502	global $_archivers;
503	require_once("archive_lib.php");
504	global $_archivers;
505	if (!isset($_archivers[$at])) {
506	// 404
507	$this->http_errr = 404;
508	header("HTTP/1.1 404 Not Found");
509	return $ctx->error("Page not found - $at", E_USER_ERROR);
510	}
511	$archiver = $_archivers[$at];
512	$archiver->template_params($ctx);
513	}
514
515	if ($cat) {
516	$archive_category = $mtdb->fetch_category($cat);
517	$ctx->stash('category', $archive_category);
518	$ctx->stash('archive_category', $archive_category);
519	}
520	if ($auth) {
521	$archive_author = $mtdb->fetch_author($auth);
522	$ctx->stash('author', $archive_author);
523	$ctx->stash('archive_author', $archive_author);
524	}
525	if (isset($at)) {
526	if (($at != 'Category') && isset($ts)) {
527	list($ts_start, $ts_end) = $archiver->get_range($ctx, $ts);
528	$ctx->stash('current_timestamp', $ts_start);
529	$ctx->stash('current_timestamp_end', $ts_end);
530	}
531	$ctx->stash('current_archive_type', $at);
532	}
533
534	if (isset($entry_id) && ($entry_id) && ($at == 'Individual' \|\| $at == 'Page')) {
535	if ($at == 'Individual') {
536	$entry =& $mtdb->fetch_entry($entry_id);
537	} elseif($at == 'Page') {
538	$entry =& $mtdb->fetch_page($entry_id);
539	}
540	$ctx->stash('entry', $entry);
541	$ctx->stash('current_timestamp', $entry['entry_authored_on']);
542	}
543
544	if ($at == 'Category') {
545	$vars =& $ctx->__stash['vars'];
546	$vars['archive_class'] = "category-archive";
547	$vars['category_archive'] = 1;
548	$vars['main_template'] = 1;
549	$vars['archive_template'] = 1;
550	$vars['module_category-monthly_archives'] = 1;
551	}
552	}
553
554	$output = $ctx->fetch('mt:'.$tpl_id, $cache_id);
555
556	$this->http_error = 200;
557	header("HTTP/1.1 200 OK");
558	// content-type header-- need to supplement with charset
559	$content_type = $ctx->stash('content_type');
560
561	if (!isset($content_type)) {
562	$content_type = $this->mime_types['__default__'];
563	if ($req_ext && (isset($this->mime_types[$req_ext]))) {
564	$content_type = $this->mime_types[$req_ext];
565	}
566	}
567	$charset = $this->config('PublishCharset');
568	if (isset($charset)) {
569	if (!preg_match('/charset=/', $content_type))
570	$content_type .= '; charset=' . $charset;
571	}
572	header("Content-Type: $content_type");
573
574	// finally, issue output
575	$output = preg_replace('/^\s*/', '', $output);
576	echo $output;
577
578	if ($this->debugging) {
579	$this->log("Queries: ".$mtdb->num_queries);
580	$this->log("Queries executed:");
581	$queries = $mtdb->savedqueries;
582	foreach ($queries as $q) {
583	$this->log($q);
584	}
585	$this->log_dump();
586	}
587	restore_error_handler();
588	}
589
590	function &resolve_url($path) {
591	$data =& $this->db->resolve_url($path, $this->blog_id);
592	if ( isset($data)
593	&& isset($data['fileinfo']['fileinfo_entry_id'])
594	&& is_numeric($data['fileinfo']['fileinfo_entry_id'])
595	) {
596	if (strtolower($data['templatemap']['templatemap_archive_type']) == 'page') {
597	$entry = $this->db->fetch_page($data['fileinfo']['fileinfo_entry_id']);
598	} else {
599	$entry = $this->db->fetch_entry($data['fileinfo']['fileinfo_entry_id']);
600	}
601	require_once('function.mtentrystatus.php');
602	if (!isset($entry) \|\| $entry['entry_status'] != STATUS_RELEASE)
603	return;
604	}
605	return $data;
606	}
607
608	function doConditionalGet($last_modified) {
609	// Thanks to Simon Willison...
610	// http://simon.incutio.com/archive/2003/04/23/conditionalGet
611	// A PHP implementation of conditional get, see
612	// http://fishbowl.pastiche.org/archives/001132.html
613	$etag = '"'.md5($last_modified).'"';
614	// Send the headers
615	header("Last-Modified: $last_modified");
616	header("ETag: $etag");
617	// See if the client has provided the required headers
618	$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ?
619	stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) :
620	false;
621	$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ?
622	stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) :
623	false;
624	if (!$if_modified_since && !$if_none_match) {
625	return;
626	}
627	// At least one of the headers is there - check them
628	if ($if_none_match && $if_none_match != $etag) {
629	return; // etag is there but doesn't match
630	}
631	if ($if_modified_since && $if_modified_since != $last_modified) {
632	return; // if-modified-since is there but doesn't match
633	}
634	// Nothing has changed since their last request - serve a 304 and exit
635	header('HTTP/1.1 304 Not Modified');
636	exit;
637	}
638
639	function display($tpl, $cid = null) {
640	$ctx =& $this->context();
641	$this->init_plugins();
642	$blog =& $ctx->stash('blog');
643	if (!$blog) {
644	$db =& $this->db();
645	$ctx->mt->db =& $db;
646	$blog =& $db->fetch_blog($this->blog_id);
647	$ctx->stash('blog', $blog);
648	$ctx->stash('blog_id', $this->blog_id);
649	$this->configure_paths($blog['blog_site_path']);
650	}
651	return $ctx->display($tpl, $cid);
652	}
653
654	function fetch($tpl, $cid = null) {
655	$ctx =& $this->context();
656	$this->init_plugins();
657	$blog =& $ctx->stash('blog');
658	if (!$blog) {
659	$db =& $this->db();
660	$ctx->mt->db =& $db;
661	$blog =& $db->fetch_blog($this->blog_id);
662	$ctx->stash('blog', $blog);
663	$ctx->stash('blog_id', $this->blog_id);
664	$this->configure_paths($blog['blog_site_path']);
665	}
666	return $ctx->fetch($tpl, $cid);
667	}
668
669	function log_dump() {
670	if ($_SERVER['REMOTE_ADDR']) {
671	// web view...
672	echo "<div class=\"debug\" style=\"border:1px solid red; margin:0.5em; padding: 0 1em; text-align:left; background-color:#ddd; color:#000\"><pre>";
673	echo implode("\n", $this->log);
674	echo "</pre></div>\n\n";
675	} else {
676	// console view...
677	$stderr = fopen('php://stderr', 'w');
678	fwrite($stderr,implode("\n", $this->log));
679	echo (implode("\n", $this->log));
680	fclose($stderr);
681	}
682	}
683
684	function error_handler($errno, $errstr, $errfile, $errline) {
685	if ($errno & (E_ALL ^ E_NOTICE)) {
686	$errstr = htmlentities($errstr);
687	$errfile = htmlentities($errfile);
688	$mtphpdir = $this->config('PHPDir');
689	$ctx =& $this->context();
690	$ctx->stash('blog_id', $this->blog_id);
691	$ctx->stash('blog', $this->db->fetch_blog($this->blog_id));
692	$ctx->stash('error_message', $errstr."<!-- file: $errfile; line: $errline; code: $errno -->");
693	$ctx->stash('error_code', $errno);
694	$http_error = $this->http_error;
695	if (!$http_error) {
696	$http_error = 500;
697	}
698	$ctx->stash('http_error', $http_error);
699	$ctx->stash('error_file', $errfile);
700	$ctx->stash('error_line', $errline);
701	$ctx->template_dir = $mtphpdir . DIRECTORY_SEPARATOR . 'tmpl';
702	$ctx->caching = 0;
703	$ctx->stash('StaticWebPath', $this->config('StaticWebPath'));
704	$ctx->stash('PublishCharset', $this->config('PublishCharset'));
705	$charset = $this->config('PublishCharset');
706	$out = $ctx->tag('Include', array('type' => 'dynamic_error', 'dynamic_error' => 1, 'system_template' => 1));
707	if (isset($out)) {
708	header("Content-type: text/html; charset=".$charset);
709	echo $out;
710	} else {
711	header("HTTP/1.1 500 Server Error");
712	header("Content-type: text/plain");
713	echo "Error executing error template.";
714	}
715	exit;
716	}
717	}
718
719	/***
720	* Retrieves a context and rendering object.
721	*/
722	function &context() {
723	static $ctx;
724	if (isset($ctx)) return $ctx;
725
726	require_once('MTViewer.php');
727	$ctx = new MTViewer($this);
728	$ctx->mt =& $this;
729	$mtphpdir = $this->config('PHPDir');
730	$mtlibdir = $this->config('PHPLibDir');
731	$ctx->compile_check = 1;
732	$ctx->caching = false;
733	$ctx->plugins_dir[] = $mtlibdir;
734	$ctx->plugins_dir[] = $mtphpdir . DIRECTORY_SEPARATOR . "plugins";
735	if ($this->debugging) {
736	$ctx->debugging_ctrl = 'URL';
737	$ctx->debug_tpl = $mtphpdir . DIRECTORY_SEPARATOR .
738	'extlib' . DIRECTORY_SEPARATOR .
739	'smarty' . DIRECTORY_SEPARATOR . "libs" . DIRECTORY_SEPARATOR .
740	'debug.tpl';
741	}
742	#if (isset($this->config('SafeMode')) && ($this->config('SafeMode'))) {
743	# // disable PHP support
744	# $ctx->php_handling = SMARTY_PHP_REMOVE;
745	#}
746	return $ctx;
747	}
748
749	function log($msg = null) {
750	$this->log[] = $msg;
751	}
752
753	function translate($str, $params = null) {
754	return translate_phrase($str, $params);
755	}
756
757	function translate_templatized_item($str) {
758	return translate_phrase($str[1]);
759	}
760
761	function translate_templatized($tmpl) {
762	$cb = array($this, 'translate_templatized_item');
763	$out = preg_replace_callback('/<(?:_\|mt)_trans phrase="(.+?)".*?>/i', $cb, $tmpl);
764	return $out;
765	}
766	}
767
768	function is_valid_email($addr) {
769	if (preg_match('/[ \|\t\|\r\|\n]\"?([^\"]+\"?@[^ <>\t]+\.[^ <>\t][^ <>\t]+)[ \|\t\|\r\|\n]/', $addr, $matches)) {
770	return $matches[1];
771	} else {
772	return 0;
773	}
774	}
775
776	$spam_protect_map = array(':' => ':', '@' => '@', '.' => '.');
777	function spam_protect($str) {
778	global $spam_protect_map;
779	return strtr($str, $spam_protect_map);
780	}
781
782	function datetime_to_timestamp($dt) {
783	$dt = preg_replace('/[^0-9]/', '', $dt);
784	$ts = mktime(substr($dt, 8, 2), substr($dt, 10, 2), substr($dt, 12, 2), substr($dt, 4, 2), substr($dt, 6, 2), substr($dt, 0, 4));
785	return $ts;
786	}
787
788	function offset_time($ts, $blog = null, $dir = null) {
789	if (isset($blog)) {
790	if (!is_array($blog)) {
791	global $mt;
792	$blog = $mt->db->fetch_blog($blog);
793	}
794	$offset = $blog['blog_server_offset'];
795	} else {
796	global $mt;
797	$offset = $mt->config('TimeOffset');
798	}
799	intval($offset) or $offset = 0;
800	$tsa = localtime($ts);
801
802	if ($tsa[8]) { // daylight savings offset
803	$offset++;
804	}
805	if ($dir == '-') {
806	$offset *= -1;
807	}
808	$ts += $offset * 3600;
809	return $ts;
810	}
811	function _strip_index($url, $blog) {
812	global $mt;
813	$index = $mt->config('IndexBasename');
814	$ext = $blog['blog_file_extension'];
815	if ($ext != '') $ext = '.' . $ext;
816	$index = preg_quote($index . $ext);
817	$url = preg_replace("/\/$index(#.*)?$/", '/$1', $url);
818	return $url;
819	}
820
821	function translate_phrase_param($str, $params = null) {
822	if (is_array($params) && (strpos($str, '[_') !== false)) {
823	for ($i = 1; $i <= count($params); $i++) {
824	$str = preg_replace("/\\[_$i\\]/", $params[$i-1], $str);
825	}
826	}
827	return $str;
828	}
829	?>

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