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mt.php.pre @ 1554

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Revision 1554, 29.8 kB (checked in by takayama, 20 months ago)
Implemented fbz:68986 * Implemented UI for session cache * Implemented php side
Property svn:keywords set to `Author Date Id Revision`

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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	}
352
353	function configure_paths($blog_site_path) {
354	if (preg_match('/^\./', $blog_site_path)) {
355	// relative address, so tack on the MT dir in front
356	$blog_site_path = $this->config('MTDir') .
357	DIRECTORY_SEPARATOR . $blog_site_path;
358	}
359	$this->config('PHPTemplateDir') or
360	$this->config('PHPTemplateDir', $blog_site_path .
361	DIRECTORY_SEPARATOR . 'templates');
362	$this->config('PHPCacheDir') or
363	$this->config('PHPCacheDir', $blog_site_path .
364	DIRECTORY_SEPARATOR . 'cache');
365
366	$ctx =& $this->context();
367	$ctx->template_dir = $this->config('PHPTemplateDir');
368	$ctx->compile_dir = $ctx->template_dir . '_c';
369	$ctx->cache_dir = $this->config('PHPCacheDir');
370	}
371
372	/***
373	* Mainline handler function.
374	*/
375	function view($blog_id = null) {
376	if ($this->debugging) {
377	require_once("MTUtil.php");
378	}
379	$blog_id or $blog_id = $this->blog_id;
380
381	$ctx =& $this->context();
382	$this->init_plugins();
383	$ctx->caching = $this->caching;
384
385	// Some defaults...
386	$mtdb =& $this->db();
387	$ctx->mt->db =& $mtdb;
388
389	// Set up our customer error handler
390	set_error_handler(array(&$this, 'error_handler'));
391
392	// User-specified request through request variable
393	$path = $this->request;
394
395	// Apache request
396	if (!$path && $_SERVER['REQUEST_URI']) {
397	$path = $_SERVER['REQUEST_URI'];
398	// strip off any query string...
399	$path = preg_replace('/\?.*/', '', $path);
400	// strip any duplicated slashes...
401	$path = preg_replace('!/+!', '/', $path);
402	}
403
404	// IIS request by error document...
405	if (preg_match('/IIS/', $_SERVER['SERVER_SOFTWARE'])) {
406	// assume 404 handler
407	if (preg_match('/^\d+;(.*)$/', $_SERVER['QUERY_STRING'], $matches)) {
408	$path = $matches[1];
409	$path = preg_replace('!^http://[^/]+!', '', $path);
410	if (preg_match('/\?(.+)?/', $path, $matches)) {
411	$_SERVER['QUERY_STRING'] = $matches[1];
412	$path = preg_replace('/\?.*$/', '', $path);
413	}
414	}
415	}
416
417	// now set the path so it may be queried
418	$this->request = $path;
419
420	// When we are invoked as an ErrorDocument, the parameters are
421	// in the environment variables REDIRECT_*
422	if (isset($_SERVER['REDIRECT_QUERY_STRING'])) {
423	// todo: populate $_GET and QUERY_STRING with REDIRECT_QUERY_STRING
424	$_SERVER['QUERY_STRING'] = getenv('REDIRECT_QUERY_STRING');
425	}
426
427	if (preg_match('/\.(\w+)$/', $path, $matches)) {
428	$req_ext = strtolower($matches[1]);
429	}
430
431	$this->blog_id = $blog_id;
432
433	$data =& $this->resolve_url($path);
434	if (!$data) {
435	// 404!
436	$this->http_error = 404;
437	header("HTTP/1.1 404 Not found");
438	return $ctx->error("Page not found - $path", E_USER_ERROR);
439	}
440
441	$info =& $data['fileinfo'];
442	$fi_path = $info['fileinfo_url'];
443	$fid = $info['fileinfo_id'];
444	$at = $info['fileinfo_archive_type'];
445	$ts = $info['fileinfo_startdate'];
446	$tpl_id = $info['fileinfo_template_id'];
447	$cat = $info['fileinfo_category_id'];
448	$auth = $info['fileinfo_author_id'];
449	$entry_id = $info['fileinfo_entry_id'];
450	$blog_id = $info['fileinfo_blog_id'];
451	$blog =& $data['blog'];
452	if ($at == 'index') {
453	$at = null;
454	$ctx->stash('index_archive', true);
455	} else {
456	$ctx->stash('index_archive', false);
457	}
458	$tts = $data['template']['template_modified_on'];
459	if ($tts) {
460	$tts = offset_time(datetime_to_timestamp($tts), $blog);
461	}
462	$ctx->stash('template_timestamp', $tts);
463	$ctx->stash('template_created_on', $data['template']['template_created_on']);
464
465	$columns_map = array(
466	'layout-wt' => 2,
467	'layout-tw' => 2,
468	'layout-wm' => 2,
469	'layout-mw' => 2,
470	'layout-wtt' => 3,
471	'layout-twt' => 3);
472	$page_layout = $data['blog']['blog_page_layout'];
473	$columns = 0;
474	if(array_key_exists($page_layout, $columns_map))
475	$columns = $columns_map[$page_layout];
476	$vars =& $ctx->__stash['vars'];
477	$vars['page_columns'] = $columns;
478	$vars['page_layout'] = $page_layout;
479
480	$this->configure_paths($blog['blog_site_path']);
481
482	// start populating our stash
483	$ctx->stash('blog_id', $blog_id);
484	$ctx->stash('blog', $blog);
485	$ctx->stash('build_template_id', $tpl_id);
486
487	// conditional get support...
488	if ($this->caching) {
489	$this->cache_modified_check = true;
490	}
491	if ($this->conditional) {
492	$last_ts = $blog['blog_children_modified_on'];
493	$last_modified = $ctx->_hdlr_date(array('ts' => $last_ts, 'format' => '%a, %d %b %Y %H:%M:%S GMT', 'language' => 'en', 'utc' => 1), $ctx);
494	$this->doConditionalGet($last_modified);
495	}
496
497	$cache_id = $blog_id.';'.$fi_path;
498	if (!$ctx->is_cached('mt:'.$tpl_id, $cache_id)) {
499	if (isset($at) && ($at != 'Category')) {
500	global $_archivers;
501	require_once("archive_lib.php");
502	global $_archivers;
503	if (!isset($_archivers[$at])) {
504	// 404
505	$this->http_errr = 404;
506	header("HTTP/1.1 404 Not Found");
507	return $ctx->error("Page not found - $at", E_USER_ERROR);
508	}
509	$archiver = $_archivers[$at];
510	$archiver->template_params($ctx);
511	}
512
513	if ($cat) {
514	$archive_category = $mtdb->fetch_category($cat);
515	$ctx->stash('category', $archive_category);
516	$ctx->stash('archive_category', $archive_category);
517	}
518	if ($auth) {
519	$archive_author = $mtdb->fetch_author($auth);
520	$ctx->stash('author', $archive_author);
521	$ctx->stash('archive_author', $archive_author);
522	}
523	if (isset($at)) {
524	if (($at != 'Category') && isset($ts)) {
525	list($ts_start, $ts_end) = $archiver->get_range($ctx, $ts);
526	$ctx->stash('current_timestamp', $ts_start);
527	$ctx->stash('current_timestamp_end', $ts_end);
528	}
529	$ctx->stash('current_archive_type', $at);
530	}
531
532	if (isset($entry_id) && ($entry_id) && ($at == 'Individual' \|\| $at == 'Page')) {
533	if ($at == 'Individual') {
534	$entry =& $mtdb->fetch_entry($entry_id);
535	} elseif($at == 'Page') {
536	$entry =& $mtdb->fetch_page($entry_id);
537	}
538	$ctx->stash('entry', $entry);
539	$ctx->stash('current_timestamp', $entry['entry_authored_on']);
540	}
541
542	if ($at == 'Category') {
543	$vars =& $ctx->__stash['vars'];
544	$vars['archive_class'] = "category-archive";
545	$vars['category_archive'] = 1;
546	$vars['main_template'] = 1;
547	$vars['archive_template'] = 1;
548	$vars['module_category-monthly_archives'] = 1;
549	}
550	}
551
552	$output = $ctx->fetch('mt:'.$tpl_id, $cache_id);
553
554	$this->http_error = 200;
555	header("HTTP/1.1 200 OK");
556	// content-type header-- need to supplement with charset
557	$content_type = $ctx->stash('content_type');
558
559	if (!isset($content_type)) {
560	$content_type = $this->mime_types['__default__'];
561	if ($req_ext && (isset($this->mime_types[$req_ext]))) {
562	$content_type = $this->mime_types[$req_ext];
563	}
564	}
565	$charset = $this->config('PublishCharset');
566	if (isset($charset)) {
567	if (!preg_match('/charset=/', $content_type))
568	$content_type .= '; charset=' . $charset;
569	}
570	header("Content-Type: $content_type");
571
572	// finally, issue output
573	$output = preg_replace('/^\s*/', '', $output);
574	echo $output;
575
576	if ($this->debugging) {
577	$this->log("Queries: ".$mtdb->num_queries);
578	$this->log("Queries executed:");
579	$queries = $mtdb->savedqueries;
580	foreach ($queries as $q) {
581	$this->log($q);
582	}
583	$this->log_dump();
584	}
585	restore_error_handler();
586	}
587
588	function &resolve_url($path) {
589	$data =& $this->db->resolve_url($path, $this->blog_id);
590	if ( isset($data)
591	&& isset($data['fileinfo']['fileinfo_entry_id'])
592	&& is_numeric($data['fileinfo']['fileinfo_entry_id'])
593	) {
594	if (strtolower($data['templatemap']['templatemap_archive_type']) == 'page') {
595	$entry = $this->db->fetch_page($data['fileinfo']['fileinfo_entry_id']);
596	} else {
597	$entry = $this->db->fetch_entry($data['fileinfo']['fileinfo_entry_id']);
598	}
599	require_once('function.mtentrystatus.php');
600	if (!isset($entry) \|\| $entry['entry_status'] != STATUS_RELEASE)
601	return;
602	}
603	return $data;
604	}
605
606	function doConditionalGet($last_modified) {
607	// Thanks to Simon Willison...
608	// http://simon.incutio.com/archive/2003/04/23/conditionalGet
609	// A PHP implementation of conditional get, see
610	// http://fishbowl.pastiche.org/archives/001132.html
611	$etag = '"'.md5($last_modified).'"';
612	// Send the headers
613	header("Last-Modified: $last_modified");
614	header("ETag: $etag");
615	// See if the client has provided the required headers
616	$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ?
617	stripslashes($_SERVER['HTTP_IF_MODIFIED_SINCE']) :
618	false;
619	$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ?
620	stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) :
621	false;
622	if (!$if_modified_since && !$if_none_match) {
623	return;
624	}
625	// At least one of the headers is there - check them
626	if ($if_none_match && $if_none_match != $etag) {
627	return; // etag is there but doesn't match
628	}
629	if ($if_modified_since && $if_modified_since != $last_modified) {
630	return; // if-modified-since is there but doesn't match
631	}
632	// Nothing has changed since their last request - serve a 304 and exit
633	header('HTTP/1.1 304 Not Modified');
634	exit;
635	}
636
637	function display($tpl, $cid = null) {
638	$ctx =& $this->context();
639	$this->init_plugins();
640	$blog =& $ctx->stash('blog');
641	if (!$blog) {
642	$db =& $this->db();
643	$ctx->mt->db =& $db;
644	$blog =& $db->fetch_blog($this->blog_id);
645	$ctx->stash('blog', $blog);
646	$ctx->stash('blog_id', $this->blog_id);
647	$this->configure_paths($blog['blog_site_path']);
648	}
649	return $ctx->display($tpl, $cid);
650	}
651
652	function fetch($tpl, $cid = null) {
653	$ctx =& $this->context();
654	$this->init_plugins();
655	$blog =& $ctx->stash('blog');
656	if (!$blog) {
657	$db =& $this->db();
658	$ctx->mt->db =& $db;
659	$blog =& $db->fetch_blog($this->blog_id);
660	$ctx->stash('blog', $blog);
661	$ctx->stash('blog_id', $this->blog_id);
662	$this->configure_paths($blog['blog_site_path']);
663	}
664	return $ctx->fetch($tpl, $cid);
665	}
666
667	function log_dump() {
668	if ($_SERVER['REMOTE_ADDR']) {
669	// web view...
670	echo "<div class=\"debug\" style=\"border:1px solid red; margin:0.5em; padding: 0 1em; text-align:left; background-color:#ddd; color:#000\"><pre>";
671	echo implode("\n", $this->log);
672	echo "</pre></div>\n\n";
673	} else {
674	// console view...
675	$stderr = fopen('php://stderr', 'w');
676	fwrite($stderr,implode("\n", $this->log));
677	echo (implode("\n", $this->log));
678	fclose($stderr);
679	}
680	}
681
682	function error_handler($errno, $errstr, $errfile, $errline) {
683	if ($errno & (E_ALL ^ E_NOTICE)) {
684	$errstr = htmlentities($errstr);
685	$errfile = htmlentities($errfile);
686	$mtphpdir = $this->config('PHPDir');
687	$ctx =& $this->context();
688	$ctx->stash('blog_id', $this->blog_id);
689	$ctx->stash('blog', $this->db->fetch_blog($this->blog_id));
690	$ctx->stash('error_message', $errstr."<!-- file: $errfile; line: $errline; code: $errno -->");
691	$ctx->stash('error_code', $errno);
692	$http_error = $this->http_error;
693	if (!$http_error) {
694	$http_error = 500;
695	}
696	$ctx->stash('http_error', $http_error);
697	$ctx->stash('error_file', $errfile);
698	$ctx->stash('error_line', $errline);
699	$ctx->template_dir = $mtphpdir . DIRECTORY_SEPARATOR . 'tmpl';
700	$ctx->caching = 0;
701	$ctx->stash('StaticWebPath', $this->config('StaticWebPath'));
702	$ctx->stash('PublishCharset', $this->config('PublishCharset'));
703	$charset = $this->config('PublishCharset');
704	$out = $ctx->tag('Include', array('type' => 'dynamic_error'));
705	if (isset($out)) {
706	header("Content-type: text/html; charset=".$charset);
707	echo $out;
708	} else {
709	header("HTTP/1.1 500 Server Error");
710	header("Content-type: text/plain");
711	echo "Error executing error template.";
712	}
713	exit;
714	}
715	}
716
717	/***
718	* Retreives a context and rendering object.
719	*/
720	function &context() {
721	static $ctx;
722	if (isset($ctx)) return $ctx;
723
724	require_once('MTViewer.php');
725	$ctx = new MTViewer($this);
726	$ctx->mt =& $this;
727	$mtphpdir = $this->config('PHPDir');
728	$mtlibdir = $this->config('PHPLibDir');
729	$ctx->compile_check = 1;
730	$ctx->caching = false;
731	$ctx->plugins_dir[] = $mtlibdir;
732	$ctx->plugins_dir[] = $mtphpdir . DIRECTORY_SEPARATOR . "plugins";
733	if ($this->debugging) {
734	$ctx->debugging_ctrl = 'URL';
735	$ctx->debug_tpl = $mtphpdir . DIRECTORY_SEPARATOR .
736	'extlib' . DIRECTORY_SEPARATOR .
737	'smarty' . DIRECTORY_SEPARATOR . "libs" . DIRECTORY_SEPARATOR .
738	'debug.tpl';
739	}
740	#if (isset($this->config('SafeMode')) && ($this->config('SafeMode'))) {
741	# // disable PHP support
742	# $ctx->php_handling = SMARTY_PHP_REMOVE;
743	#}
744	return $ctx;
745	}
746
747	function log($msg = null) {
748	$this->log[] = $msg;
749	}
750
751	function translate($str, $params = null) {
752	return translate_phrase($str, $params);
753	}
754
755	function translate_templatized_item($str) {
756	return translate_phrase($str[1]);
757	}
758
759	function translate_templatized($tmpl) {
760	$cb = array($this, 'translate_templatized_item');
761	$out = preg_replace_callback('/<(?:_\|mt)_trans phrase="(.+?)".*?>/i', $cb, $tmpl);
762	return $out;
763	}
764	}
765
766	function is_valid_email($addr) {
767	if (preg_match('/[ \|\t\|\r\|\n]\"?([^\"]+\"?@[^ <>\t]+\.[^ <>\t][^ <>\t]+)[ \|\t\|\r\|\n]/', $addr, $matches)) {
768	return $matches[1];
769	} else {
770	return 0;
771	}
772	}
773
774	$spam_protect_map = array(':' => ':', '@' => '@', '.' => '.');
775	function spam_protect($str) {
776	global $spam_protect_map;
777	return strtr($str, $spam_protect_map);
778	}
779
780	function datetime_to_timestamp($dt) {
781	$dt = preg_replace('/[^0-9]/', '', $dt);
782	$ts = mktime(substr($dt, 8, 2), substr($dt, 10, 2), substr($dt, 12, 2), substr($dt, 4, 2), substr($dt, 6, 2), substr($dt, 0, 4));
783	return $ts;
784	}
785
786	function offset_time($ts, $blog = null, $dir = null) {
787	if (isset($blog)) {
788	if (!is_array($blog)) {
789	global $mt;
790	$blog = $mt->db->fetch_blog($blog);
791	}
792	$offset = $blog['blog_server_offset'];
793	} else {
794	global $mt;
795	$offset = $mt->config('TimeOffset');
796	}
797	intval($offset) or $offset = 0;
798	$tsa = localtime($ts);
799
800	if ($tsa[8]) { // daylight savings offset
801	$offset++;
802	}
803	if ($dir == '-') {
804	$offset *= -1;
805	}
806	$ts += $offset * 3600;
807	return $ts;
808	}
809	function _strip_index($url, $blog) {
810	global $mt;
811	$index = $mt->config('IndexBasename');
812	$ext = $blog['blog_file_extension'];
813	if ($ext != '') $ext = '.' . $ext;
814	$index = preg_quote($index . $ext);
815	$url = preg_replace("/\/$index(#.*)?$/", '/$1', $url);
816	return $url;
817	}
818
819	function translate_phrase_param($str, $params = null) {
820	if (is_array($params) && (strpos($str, '[_') !== false)) {
821	for ($i = 1; $i <= count($params); $i++) {
822	$str = preg_replace("/\\[_$i\\]/", $params[$i-1], $str);
823	}
824	}
825	return $str;
826	}
827	?>

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