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FeedWordPress / 2010.0602
FeedWordPress v2010.0602
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feedwordpress / feedwordpress.php

feedwordpress.php in FeedWordPress 2010.0602, at feedwordpress.php

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1 <?php
2 /*
3 Plugin Name: FeedWordPress
4 Plugin URI: http://feedwordpress.radgeek.com/
5 Description: simple and flexible Atom/RSS syndication for WordPress
6 Version: 2010.0602
7 Author: Charles Johnson
8 Author URI: http://radgeek.com/
9 License: GPL
10 */
11
12 /**
13 * @package FeedWordPress
14 * @version 2010.0602
15 */
16
17 # This uses code derived from:
18 # - wp-rss-aggregate.php by Kellan Elliot-McCrea <kellan@protest.net>
19 # - HTTP Navigator 2 by Keyvan Minoukadeh <keyvan@k1m.com>
20 # - Ultra-Liberal Feed Finder by Mark Pilgrim <mark@diveintomark.org>
21 # according to the terms of the GNU General Public License.
22 #
23 # INSTALLATION: see readme.txt or <http://projects.radgeek.com/install>
24 #
25 # USAGE: once FeedWordPress is installed, you manage just about everything from
26 # the WordPress Dashboard, under the Syndication menu. To ensure that fresh
27 # content is added as it becomes available, you can convince your contributors
28 # to put your XML-RPC URI (if WordPress is installed at
29 # <http://www.zyx.com/blog>, XML-RPC requests should be sent to
30 # <http://www.zyx.com/blog/xmlrpc.php>), or update manually under the
31 # Syndication menu, or set up automatic updates under Syndication --> Settings,
32 # or use a cron job.
33
34 # -- Don't change these unless you know what you're doing...
35
36 define ('FEEDWORDPRESS_VERSION', '2010.0602');
37 define ('FEEDWORDPRESS_AUTHOR_CONTACT', 'http://radgeek.com/contact');
38
39 // Defaults
40 define ('DEFAULT_SYNDICATION_CATEGORY', 'Contributors');
41 define ('DEFAULT_UPDATE_PERIOD', 60); // value in minutes
42
43 if (isset($_REQUEST['feedwordpress_debug'])) :
44 $feedwordpress_debug = $_REQUEST['feedwordpress_debug'];
45 else :
46 $feedwordpress_debug = get_option('feedwordpress_debug');
47 if (is_string($feedwordpress_debug)) :
48 $feedwordpress_debug = ($feedwordpress_debug == 'yes');
49 endif;
50 endif;
51 define ('FEEDWORDPRESS_DEBUG', $feedwordpress_debug);
52
53 define ('FEEDWORDPRESS_CAT_SEPARATOR_PATTERN', '/[:\n]/');
54 define ('FEEDWORDPRESS_CAT_SEPARATOR', "\n");
55
56 define ('FEEDVALIDATOR_URI', 'http://feedvalidator.org/check.cgi');
57
58 define ('FEEDWORDPRESS_FRESHNESS_INTERVAL', 10*60); // Every ten minutes
59
60 define ('FWP_SCHEMA_HAS_USERMETA', 2966);
61 define ('FWP_SCHEMA_USES_ARGS_TAXONOMY', 12694); // Revision # for using $args['taxonomy'] to get link categories
62 define ('FWP_SCHEMA_20', 3308); // Database schema # for WP 2.0
63 define ('FWP_SCHEMA_21', 4772); // Database schema # for WP 2.1
64 define ('FWP_SCHEMA_23', 5495); // Database schema # for WP 2.3
65 define ('FWP_SCHEMA_25', 7558); // Database schema # for WP 2.5
66 define ('FWP_SCHEMA_26', 8201); // Database schema # for WP 2.6
67 define ('FWP_SCHEMA_27', 9872); // Database schema # for WP 2.7
68 define ('FWP_SCHEMA_28', 11548); // Database schema # for WP 2.8
69 define ('FWP_SCHEMA_29', 12329); // Database schema # for WP 2.9
70 define ('FWP_SCHEMA_30', 12694); // Database schema # for WP 3.0
71
72 if (FEEDWORDPRESS_DEBUG) :
73 // Help us to pick out errors, if any.
74 ini_set('error_reporting', E_ALL & ~E_NOTICE);
75 ini_set('display_errors', true);
76
77 // When testing we don't want cache issues to interfere. But this is
78 // a VERY BAD SETTING for a production server. Webmasters will eat your
79 // face for breakfast if you use it, and the baby Jesus will cry. So
80 // make sure FEEDWORDPRESS_DEBUG is FALSE for any site that will be
81 // used for more than testing purposes!
82 define('FEEDWORDPRESS_CACHE_AGE', 1);
83 define('FEEDWORDPRESS_CACHE_LIFETIME', 1);
84 define('FEEDWORDPRESS_FETCH_TIME_OUT', 60);
85 else :
86 // Hold onto data all day for conditional GET purposes,
87 // but consider it stale after 1 min (requiring a conditional GET)
88 define('FEEDWORDPRESS_CACHE_LIFETIME', 24*60*60);
89 define('FEEDWORDPRESS_CACHE_AGE', 1*60);
90 define('FEEDWORDPRESS_FETCH_TIME_OUT', 10);
91 endif;
92
93 // Use our the cache settings that we want.
94 add_filter('wp_feed_cache_transient_lifetime', array('FeedWordPress', 'cache_lifetime'));
95
96 // Ensure that we have SimplePie loaded up and ready to go.
97 // We no longer need a MagpieRSS upgrade module. Hallelujah!
98 require_once(ABSPATH . WPINC . '/feed.php');
99
100 if (isset($wp_db_version)) :
101 if ($wp_db_version >= FWP_SCHEMA_23) :
102 require_once (ABSPATH . WPINC . '/registration.php'); // for wp_insert_user
103 elseif ($wp_db_version >= FWP_SCHEMA_21) : // WordPress 2.1 and 2.2, but not 2.3
104 require_once (ABSPATH . WPINC . '/registration.php'); // for wp_insert_user
105 require_once (ABSPATH . 'wp-admin/admin-db.php'); // for wp_insert_category
106 elseif ($wp_db_version >= FWP_SCHEMA_20) : // WordPress 2.0
107 require_once (ABSPATH . WPINC . '/registration-functions.php'); // for wp_insert_user
108 require_once (ABSPATH . 'wp-admin/admin-db.php'); // for wp_insert_category
109 endif;
110 endif;
111
112 require_once (ABSPATH . WPINC . '/class-feed.php');
113 require_once(dirname(__FILE__) . '/compatability.php'); // LEGACY API: Replicate or mock up functions for legacy support purposes
114 require_once(dirname(__FILE__) . '/feedwordpresshtml.class.php');
115 require_once(dirname(__FILE__) . '/feedwordpress-content-type-sniffer.class.php');
116
117 // Magic quotes are just about the stupidest thing ever.
118 if (is_array($_POST)) :
119 $fwp_post = stripslashes_deep($_POST);
120 endif;
121
122 // Get the path relative to the plugins directory in which FWP is stored
123 preg_match (
124 '|/wp-content/plugins/(.+)$|',
125 dirname(__FILE__),
126 $ref
127 );
128
129 if (isset($ref[1])) :
130 $fwp_path = $ref[1];
131 else : // Something went wrong. Let's just guess.
132 $fwp_path = 'feedwordpress';
133 endif;
134
135 function feedwordpress_admin_scripts () {
136 global $fwp_path;
137
138 wp_enqueue_script('post'); // for magic tag and category boxes
139 if (!FeedWordPressCompatibility::test_version(FWP_SCHEMA_29)) : // < 2.9
140 wp_enqueue_script('thickbox'); // for fold-up boxes
141 endif;
142 wp_enqueue_script('admin-forms'); // for checkbox selection
143
144 wp_register_script('feedwordpress-elements', WP_PLUGIN_URL.'/'.$fwp_path.'/feedwordpress-elements.js');
145 wp_enqueue_script('feedwordpress-elements');
146 }
147
148 // If this is a FeedWordPress admin page, queue up scripts for AJAX functions that FWP uses
149 // If it is a display page or a non-FeedWordPress admin page, don't.
150 if (is_admin() and isset($_REQUEST['page']) and preg_match("|^{$fwp_path}/|", $_REQUEST['page'])) :
151 add_action('admin_print_scripts', 'feedwordpress_admin_scripts');
152
153 wp_register_style('feedwordpress-elements', WP_PLUGIN_URL.'/'.$fwp_path.'/feedwordpress-elements.css');
154
155 wp_enqueue_style('dashboard');
156 wp_enqueue_style('feedwordpress-elements');
157
158 if (function_exists('wp_admin_css')) :
159 if (fwp_test_wp_version(FWP_SCHEMA_25)) :
160 wp_admin_css('css/dashboard');
161 endif;
162 endif;
163 endif;
164
165 if (!FeedWordPress::needs_upgrade()) : // only work if the conditions are safe!
166
167 # Syndicated items are generally received in output-ready (X)HTML and
168 # should not be folded, crumpled, mutilated, or spindled by WordPress
169 # formatting filters. But we don't want to interfere with filters for
170 # any locally-authored posts, either.
171 #
172 # What WordPress should really have is a way for upstream filters to
173 # stop downstream filters from running at all. Since it doesn't, and
174 # since a downstream filter can't access the original copy of the text
175 # that is being filtered, what we will do here is (1) save a copy of the
176 # original text upstream, before any other filters run, and then (2)
177 # retrieve that copy downstream, after all the other filters run, *if*
178 # this is a syndicated post
179
180 add_filter('the_content', 'feedwordpress_preserve_syndicated_content', -10000);
181 add_filter('the_content', 'feedwordpress_restore_syndicated_content', 10000);
182
183 add_action('atom_entry', 'feedwordpress_item_feed_data');
184
185 # Filter in original permalinks if the user wants that
186 add_filter('post_link', 'syndication_permalink', 1);
187
188 # When foreign URLs are used for permalinks in feeds or display
189 # contexts, they need to be escaped properly.
190 add_filter('the_permalink', 'syndication_permalink_escaped');
191 add_filter('the_permalink_rss', 'syndication_permalink_escaped');
192
193 add_filter('post_comments_feed_link', 'syndication_comments_feed_link');
194
195 # WTF? By default, wp_insert_link runs incoming link_url and link_rss
196 # URIs through default filters that include `wp_kses()`. But `wp_kses()`
197 # just happens to escape any occurrence of & to &amp; -- which just
198 # happens to fuck up any URI with a & to separate GET parameters.
199 remove_filter('pre_link_rss', 'wp_filter_kses');
200 remove_filter('pre_link_url', 'wp_filter_kses');
201
202 # Admin menu
203 add_action('admin_menu', 'fwp_add_pages');
204 add_action('admin_notices', 'fwp_check_debug');
205
206 add_action('admin_menu', 'feedwordpress_add_post_edit_controls');
207 add_action('save_post', 'feedwordpress_save_post_edit_controls');
208
209 add_action('admin_footer', array('FeedWordPress', 'admin_footer'));
210
211 # Inbound XML-RPC update methods
212 add_filter('xmlrpc_methods', 'feedwordpress_xmlrpc_hook');
213
214 # Outbound XML-RPC ping reform
215 remove_action('publish_post', 'generic_ping'); // WP 1.5.x
216 remove_action('do_pings', 'do_all_pings', 10, 1); // WP 2.1, 2.2
217 remove_action('publish_post', '_publish_post_hook', 5, 1); // WP 2.3
218
219 add_action('publish_post', 'fwp_publish_post_hook', 5, 1);
220 add_action('do_pings', 'fwp_do_pings', 10, 1);
221 add_action('feedwordpress_update', 'fwp_hold_pings');
222 add_action('feedwordpress_update_complete', 'fwp_release_pings');
223
224 # Hook in logging functions only if the logging option is ON
225 $update_logging = get_option('feedwordpress_update_logging');
226 if ($update_logging == 'yes') :
227 add_action('post_syndicated_item', 'log_feedwordpress_post', 100);
228 add_action('update_syndicated_item', 'log_feedwordpress_update_post', 100);
229 add_action('feedwordpress_update', 'log_feedwordpress_update_feeds', 100);
230 add_action('feedwordpress_check_feed', 'log_feedwordpress_check_feed', 100);
231 add_action('feedwordpress_update_complete', 'log_feedwordpress_update_complete', 100);
232 endif;
233
234 if (FeedWordPress::update_requested()) :
235 if (FEEDWORDPRESS_DEBUG) :
236 add_action('post_syndicated_item', 'debug_out_feedwordpress_post', 100);
237 add_action('update_syndicated_item', 'debug_out_feedwordpress_update_post', 100);
238 add_action('feedwordpress_update', 'debug_out_feedwordpress_update_feeds', 100);
239 add_action('feedwordpress_check_feed', 'debug_out_feedwordpress_check_feed', 100);
240 add_action('feedwordpress_update_complete', 'debug_out_feedwordpress_update_complete', 100);
241 endif;
242
243 add_action('feedwordpress_check_feed_complete', 'debug_out_feedwordpress_feed_error', 100, 3);
244 endif;
245
246 # Cron-less auto-update. Hooray!
247 $autoUpdateHook = get_option('feedwordpress_automatic_updates');
248 if ($autoUpdateHook != 'init') :
249 $autoUpdateHook = 'shutdown';
250 endif;
251 add_action($autoUpdateHook, 'feedwordpress_auto_update');
252
253 add_action('init', 'feedwordpress_update_magic_url');
254
255 # Default sanitizers
256 add_filter('syndicated_item_content', array('SyndicatedPost', 'resolve_relative_uris'), 0, 2);
257 add_filter('syndicated_item_content', array('SyndicatedPost', 'sanitize_content'), 0, 2);
258
259 else :
260 # Hook in the menus, which will just point to the upgrade interface
261 add_action('admin_menu', 'fwp_add_pages');
262 endif; // if (!FeedWordPress::needs_upgrade())
263
264 function feedwordpress_auto_update () {
265 if (FeedWordPress::stale()) :
266 $feedwordpress = new FeedWordPress;
267 $feedwordpress->update();
268 endif;
269 } /* feedwordpress_auto_update () */
270
271 function feedwordpress_update_magic_url () {
272 global $wpdb;
273
274 // Explicit update request in the HTTP request (e.g. from a cron job)
275 if (FeedWordPress::update_requested()) :
276 $feedwordpress = new FeedWordPress;
277 $feedwordpress->update(FeedWordPress::update_requested_url());
278
279 if (FEEDWORDPRESS_DEBUG and count($wpdb->queries) > 0) :
280 $mysqlTime = 0.0;
281 $byTime = array();
282 foreach ($wpdb->queries as $query) :
283 $time = $query[1] * 1000000.0;
284 $mysqlTime += $query[1];
285 if (!isset($byTime[$time])) : $byTime[$time] = array(); endif;
286 $byTime[$time][] = $query[0]. ' // STACK: ' . $query[2];
287 endforeach;
288 krsort($byTime);
289
290 foreach ($byTime as $time => $querySet) :
291 foreach ($querySet as $query) :
292 print "[".(sprintf('%4.4f', $time/1000.0)) . "ms] $query\n";
293 endforeach;
294 endforeach;
295 echo "[feedwordpress] $wpdb->num_queries queries. $mysqlTime seconds in MySQL. Total of "; timer_stop(1); print " seconds.";
296 endif;
297
298
299 // Magic URL should return nothing but a 200 OK header packet
300 // when successful.
301 exit;
302 endif;
303 } /* feedwordpress_magic_update_url () */
304
305 ################################################################################
306 ## LOGGING FUNCTIONS: log status updates to error_log if you want it ###########
307 ################################################################################
308
309 function log_feedwordpress_post ($id) {
310 $post = wp_get_single_post($id);
311 error_log("[".date('Y-m-d H:i:s')."][feedwordpress] posted "
312 ."'{$post->post_title}' ({$post->post_date})");
313 }
314
315 function log_feedwordpress_update_post ($id) {
316 $post = wp_get_single_post($id);
317 error_log("[".date('Y-m-d H:i:s')."][feedwordpress] updated "
318 ."'{$post->post_title}' ({$post->post_date})"
319 ." (as of {$post->post_modified})");
320 }
321
322 function log_feedwordpress_update_feeds ($uri) {
323 error_log("[".date('Y-m-d H:i:s')."][feedwordpress] update('$uri')");
324 }
325
326 function log_feedwordpress_check_feed ($feed) {
327 $uri = $feed['link/uri']; $name = $feed['link/name'];
328 error_log("[".date('Y-m-d H:i:s')."][feedwordpress] Examining $name <$uri>");
329 }
330
331 function log_feedwordpress_update_complete ($delta) {
332 $mesg = array();
333 if (isset($delta['new'])) $mesg[] = 'added '.$delta['new'].' new posts';
334 if (isset($delta['updated'])) $mesg[] = 'updated '.$delta['updated'].' existing posts';
335 if (empty($mesg)) $mesg[] = 'nothing changed';
336
337 error_log("[".date('Y-m-d H:i:s')."][feedwordpress] "
338 .(is_null($delta) ? "Error: I don't syndicate that URI"
339 : implode(' and ', $mesg)));
340 }
341
342 function debug_out_feedwordpress_post ($id) {
343 $post = wp_get_single_post($id);
344 print ("[".date('Y-m-d H:i:s')."][feedwordpress] posted "
345 ."'{$post->post_title}' ({$post->post_date})\n");
346 }
347
348 function debug_out_feedwordpress_update_post ($id) {
349 $post = wp_get_single_post($id);
350 print ("[".date('Y-m-d H:i:s')."][feedwordpress] updated "
351 ."'{$post->post_title}' ({$post->post_date})"
352 ." (as of {$post->post_modified})\n");
353 }
354
355 function debug_out_feedwordpress_update_feeds ($uri) {
356 print ("[".date('Y-m-d H:i:s')."][feedwordpress] update('$uri')\n");
357 }
358
359 function debug_out_feedwordpress_check_feed ($feed) {
360 $uri = $feed['link/uri']; $name = $feed['link/name'];
361 print ("[".date('Y-m-d H:i:s')."][feedwordpress] Examining $name <$uri>\n");
362 }
363
364 function debug_out_feedwordpress_update_complete ($delta) {
365 $mesg = array();
366 if (isset($delta['new'])) $mesg[] = 'added '.$delta['new'].' new posts';
367 if (isset($delta['updated'])) $mesg[] = 'updated '.$delta['updated'].' existing posts';
368 if (empty($mesg)) $mesg[] = 'nothing changed';
369
370 print ("[".date('Y-m-d H:i:s')."][feedwordpress] "
371 .(is_null($delta) ? "Error: I don't syndicate that URI"
372 : implode(' and ', $mesg))."\n");
373 }
374
375 function debug_out_feedwordpress_feed_error ($feed, $added, $dt) {
376 if (is_wp_error($added)) :
377 $mesgs = $added->get_error_messages();
378 foreach ($mesgs as $mesg) :
379 echo "[feedwordpress] Error updating [{$feed['link/uri']}]: $mesg\n";
380 endforeach;
381 endif;
382 }
383
384 ################################################################################
385 ## TEMPLATE API: functions to make your templates syndication-aware ############
386 ################################################################################
387
388 /**
389 * is_syndicated: Tests whether the current post in a Loop context, or a post
390 * given by ID number, was syndicated by FeedWordPress. Useful for templates
391 * to determine whether or not to retrieve syndication-related meta-data in
392 * displaying a post.
393 *
394 * @param int $id The post to check for syndicated status. Defaults to the current post in a Loop context.
395 * @return bool TRUE if the post's meta-data indicates it was syndicated; FALSE otherwise
396 */
397 function is_syndicated ($id = NULL) {
398 return (strlen(get_syndication_feed_id($id)) > 0);
399 } /* function is_syndicated() */
400
401 function get_syndication_source_link ($original = NULL, $id = NULL) {
402 if (is_null($original)) : $original = FeedWordPress::use_aggregator_source_data();
403 endif;
404
405 if ($original) : $vals = get_post_custom_values('syndication_source_uri_original', $id);
406 else : $vals = array();
407 endif;
408
409 if (count($vals) == 0) : $vals = get_post_custom_values('syndication_source_uri', $id);
410 endif;
411
412 if (count($vals) > 0) : $ret = $vals[0]; else : $ret = NULL; endif;
413
414 return $ret;
415 } /* function get_syndication_source_link() */
416
417 function the_syndication_source_link ($original = NULL, $id = NULL) {
418 echo get_syndication_source_link($original, $id);
419 }
420
421 function feedwordpress_display_url ($url, $before = 60, $after = 0) {
422 $bits = parse_url($url);
423
424 // Strip out crufty subdomains
425 $bits['host'] = preg_replace('/^www[0-9]*\./i', '', $bits['host']);
426
427 // Reassemble bit-by-bit with minimum of crufty elements
428 $url = (isset($bits['user'])?$bits['user'].'@':'')
429 .(isset($bits['host'])?$bits['host']:'')
430 .(isset($bits['path'])?$bits['path']:'')
431 .(isset($uri_bits['port'])?':'.$uri_bits['port']:'')
432 .(isset($bits['query'])?'?'.$bits['query']:'');
433
434 if (strlen($url) > ($before+$after)) :
435 $url = substr($url, 0, $before).'…'.substr($url, 0 - $after, $after);
436 endif;
437
438 return $url;
439 }
440
441 function get_syndication_source ($original = NULL, $id = NULL) {
442 if (is_null($original)) :
443 $original = FeedWordPress::use_aggregator_source_data();
444 endif;
445
446 if ($original) :
447 $vals = get_post_custom_values('syndication_source_original', $id);
448 else :
449 $vals = array();
450 endif;
451
452 if (count($vals) == 0) :
453 $vals = get_post_custom_values('syndication_source', $id);
454 endif;
455
456 if (count($vals) > 0) :
457 $ret = $vals[0];
458 else :
459 $ret = NULL;
460 endif;
461
462 if (is_null($ret) or strlen(trim($ret)) == 0) :
463 // Fall back to URL of blog
464 $ret = feedwordpress_display_url(get_syndication_source_link());
465 endif;
466
467 return $ret;
468 } /* function get_syndication_source() */
469
470 function the_syndication_source ($original = NULL, $id = NULL) { echo get_syndication_source($original, $id); }
471
472 function get_syndication_feed ($original = NULL, $id = NULL) {
473 if (is_null($original)) : $original = FeedWordPress::use_aggregator_source_data();
474 endif;
475
476 if ($original) : $vals = get_post_custom_values('syndication_feed_original', $id);
477 else : $vals = array();
478 endif;
479
480 if (count($vals) == 0) : $vals = get_post_custom_values('syndication_feed', $id);
481 endif;
482
483 if (count($vals) > 0) : $ret = $vals[0]; else : $ret = NULL; endif;
484
485 return $ret;
486 } /* function get_syndication_feed() */
487
488 function the_syndication_feed ($original = NULL, $id = NULL) { echo get_syndication_feed($original, $id); }
489
490 function get_syndication_feed_guid ($original = NULL, $id = NULL) {
491 if (is_null($original)) : $original = FeedWordPress::use_aggregator_source_data();
492 endif;
493
494 if ($original) : $vals = get_post_custom_values('syndication_source_id_original', $id);
495 else : $vals = array();
496 endif;
497
498 if (count($vals) == 0) : $vals = array(get_feed_meta('feed/id', $id));
499 endif;
500
501 if (count($vals) > 0) : $ret = $vals[0]; else : $ret = NULL; endif;
502
503 return $ret;
504 } /* function get_syndication_feed_guid () */
505
506 function the_syndication_feed_guid ($original = NULL, $id = NULL) { echo get_syndication_feed_guid($original, $id); }
507
508 function get_syndication_feed_id ($id = NULL) { list($u) = get_post_custom_values('syndication_feed_id', $id); return $u; }
509 function the_syndication_feed_id ($id = NULL) { echo get_syndication_feed_id($id); }
510
511 $feedwordpress_linkcache = array (); // only load links from database once
512 function get_syndication_feed_object ($id = NULL) {
513 global $feedwordpress_linkcache;
514
515 $link = NULL;
516
517 $feed_id = get_syndication_feed_id($id);
518 if (strlen($feed_id) > 0):
519 if (isset($feedwordpress_linkcache[$feed_id])) :
520 $link = $feedwordpress_linkcache[$feed_id];
521 else :
522 $link = new SyndicatedLink($feed_id);
523 $feedwordpress_linkcache[$feed_id] = $link;
524 endif;
525 endif;
526 return $link;
527 }
528
529 function get_feed_meta ($key, $id = NULL) {
530 $ret = NULL;
531
532 $link = get_syndication_feed_object($id);
533 if (is_object($link) and isset($link->settings[$key])) :
534 $ret = $link->settings[$key];
535 endif;
536 return $ret;
537 } /* get_feed_meta() */
538
539 function get_syndication_permalink ($id = NULL) {
540 list($u) = get_post_custom_values('syndication_permalink', $id); return $u;
541 }
542 function the_syndication_permalink ($id = NULL) {
543 echo get_syndication_permalink($id);
544 }
545
546 /**
547 * get_local_permalink: returns a string containing the internal permalink
548 * for a post (whether syndicated or not) on your local WordPress installation.
549 * This may be useful if you want permalinks to point to the original source of
550 * an article for most purposes, but want to retrieve a URL for the local
551 * representation of the post for one or two limited purposes (for example,
552 * linking to a comments page on your local aggregator site).
553 *
554 * @param $id The numerical ID of the post to get the permalink for. If empty,
555 * defaults to the current post in a Loop context.
556 * @return string The URL of the local permalink for this post.
557 *
558 * @uses get_permalink()
559 * @global $feedwordpress_the_original_permalink
560 *
561 * @since 2010.0217
562 */
563 function get_local_permalink ($id = NULL) {
564 global $feedwordpress_the_original_permalink;
565
566 // get permalink, and thus activate filter and force global to be filled
567 // with original URL.
568 $url = get_permalink($id);
569 return $feedwordpress_the_original_permalink;
570 } /* get_local_permalink() */
571
572 /**
573 * the_original_permalink: displays the contents of get_original_permalink()
574 *
575 * @param $id The numerical ID of the post to get the permalink for. If empty,
576 * defaults to the current post in a Loop context.
577 *
578 * @uses get_local_permalinks()
579 * @uses apply_filters
580 *
581 * @since 2010.0217
582 */
583 function the_local_permalink ($id = NULL) {
584 print apply_filters('the_permalink', get_local_permalink($id));
585 } /* function the_local_permalink() */
586
587 ################################################################################
588 ## FILTERS: syndication-aware handling of post data for templates and feeds ####
589 ################################################################################
590
591 $feedwordpress_the_syndicated_content = NULL;
592 $feedwordpress_the_original_permalink = NULL;
593
594 function feedwordpress_preserve_syndicated_content ($text) {
595 global $feedwordpress_the_syndicated_content;
596
597 $globalExpose = (get_option('feedwordpress_formatting_filters') == 'yes');
598 $localExpose = get_post_custom_values('_feedwordpress_formatting_filters');
599 $expose = ($globalExpose or ((count($localExpose) > 0) and $localExpose[0]));
600
601 if ( is_syndicated() and !$expose ) :
602 $feedwordpress_the_syndicated_content = $text;
603 else :
604 $feedwordpress_the_syndicated_content = NULL;
605 endif;
606 return $text;
607 }
608
609 function feedwordpress_restore_syndicated_content ($text) {
610 global $feedwordpress_the_syndicated_content;
611
612 if ( !is_null($feedwordpress_the_syndicated_content) ) :
613 $text = $feedwordpress_the_syndicated_content;
614 endif;
615
616 return $text;
617 }
618
619 function feedwordpress_item_feed_data () {
620 // In a post context....
621 if (is_syndicated()) :
622 ?>
623 <source>
624 <title><?php print htmlspecialchars(get_syndication_source()); ?></title>
625 <link rel="alternate" type="text/html" href="<?php print htmlspecialchars(get_syndication_source_link()); ?>" />
626 <link rel="self" href="<?php print htmlspecialchars(get_syndication_feed()); ?>" />
627 <?php
628 $id = get_syndication_feed_guid();
629 if (strlen($id) > 0) :
630 ?>
631 <id><?php print htmlspecialchars($id); ?></id>
632 <?php
633 endif;
634 $updated = get_feed_meta('feed/updated');
635 if (strlen($updated) > 0) : ?>
636 <updated><?php print $updated; ?></updated>
637 <?php
638 endif;
639 ?>
640 </source>
641 <?php
642 endif;
643 }
644
645 /**
646 * syndication_permalink: Allow WordPress to use the original remote URL of
647 * syndicated posts as their permalink. Can be turned on or off by by setting in
648 * Syndication => Posts & Links. Saves the old internal permalink in a global
649 * variable for later use.
650 *
651 * @param string $permalink The internal permalink
652 * @return string The new permalink. Same as the old if the post is not
653 * syndicated, or if FWP is set to use internal permalinks, or if the post
654 * was syndicated, but didn't have a proper permalink recorded.
655 *
656 * @uses FeedWordPress::munge_permalinks()
657 * @uses get_syndication_permalink()
658 * @global $feedwordpress_the_original_permalink
659 */
660 function syndication_permalink ($permalink = '') {
661 global $feedwordpress_the_original_permalink;
662
663 // Save the local permalink in case we need to retrieve it later.
664 $feedwordpress_the_original_permalink = $permalink;
665
666 // Map this permalink to a post ID so we can get the correct permalink
667 // even outside of the Post Loop. Props Björn.
668 $id = url_to_postid($permalink);
669
670 $munge = false;
671 $link = get_syndication_feed_object($id);
672 if (is_object($link)) :
673 $munge = ($link->setting('munge permalink', 'munge_permalink', 'yes') != 'no');
674 endif;
675
676 if ($munge):
677 $uri = get_syndication_permalink($id);
678 $permalink = ((strlen($uri) > 0) ? $uri : $permalink);
679 endif;
680 return $permalink;
681 } /* function syndication_permalink () */
682
683 /**
684 * syndication_permalink_escaped: Escape XML special characters in syndicated
685 * permalinks when used in feed contexts and HTML display contexts.
686 *
687 * @param string $permalink
688 * @return string
689 *
690 * @uses is_syndicated()
691 * @uses FeedWordPress::munge_permalinks()
692 *
693 */
694 function syndication_permalink_escaped ($permalink) {
695 if (is_syndicated() and FeedWordPress::munge_permalinks()) :
696 // This is a foreign link; WordPress can't vouch for its not
697 // having any entities that need to be &-escaped. So we'll do
698 // it here.
699 $permalink = esc_html($permalink);
700 endif;
701 return $permalink;
702 } /* function syndication_permalink_escaped() */
703
704 /**
705 * syndication_comments_feed_link: Escape XML special characters in comments
706 * feed links
707 *
708 * @param string $link
709 * @return string
710 *
711 * @uses is_syndicated()
712 * @uses FeedWordPress::munge_permalinks()
713 */
714 function syndication_comments_feed_link ($link) {
715 global $feedwordpress_the_original_permalink, $id;
716
717 if (is_syndicated() and FeedWordPress::munge_permalinks()) :
718 // If the source post provided a comment feed URL using
719 // wfw:commentRss or atom:link/@rel="replies" we can make use of
720 // that value here.
721 $source = get_syndication_feed_object();
722 $replacement = NULL;
723 if ($source->setting('munge comments feed links', 'munge_comments_feed_links', 'yes') != 'no') :
724 $commentFeeds = get_post_custom_values('wfw:commentRSS');
725 if (
726 is_array($commentFeeds)
727 and (count($commentFeeds) > 0)
728 and (strlen($commentFeeds[0]) > 0)
729 ) :
730 $replacement = $commentFeeds[0];
731
732 // This is a foreign link; WordPress can't vouch for its not
733 // having any entities that need to be &-escaped. So we'll do it
734 // here.
735 $replacement = esc_html($replacement);
736 endif;
737 endif;
738
739 if (is_null($replacement)) :
740 // Q: How can we get the proper feed format, since the
741 // format is, stupidly, not passed to the filter?
742 // A: Kludge kludge kludge kludge!
743 $fancy_permalinks = ('' != get_option('permalink_structure'));
744 if ($fancy_permalinks) :
745 preg_match('|/feed(/([^/]+))?/?$|', $link, $ref);
746
747 $format = (isset($ref[2]) ? $ref[2] : '');
748 if (strlen($format) == 0) : $format = get_default_feed(); endif;
749
750 $replacement = trailingslashit($feedwordpress_the_original_permalink) . 'feed';
751 if ($format != get_default_feed()) :
752 $replacement .= '/'.$format;
753 endif;
754 $replacement = user_trailingslashit($replacement, 'single_feed');
755 else :
756 // No fancy permalinks = no problem
757 // WordPress doesn't call get_permalink() to
758 // generate the comment feed URL, so the
759 // comments feed link is never munged by FWP.
760 endif;
761 endif;
762
763 if (!is_null($replacement)) : $link = $replacement; endif;
764 endif;
765 return $link;
766 } /* function syndication_comments_feed_link() */
767
768 ################################################################################
769 ## ADMIN MENU ADD-ONS: register Dashboard management pages #####################
770 ################################################################################
771
772 function fwp_add_pages () {
773 global $fwp_capability;
774 global $fwp_path;
775
776 $menu = array('Syndicated Sites', 'Syndication', $fwp_capability['manage_links'], $fwp_path.'/syndication.php', NULL);
777 if (fwp_test_wp_version(FWP_SCHEMA_27)) :
778 // add icon parameter
779 $menu[] = WP_PLUGIN_URL.'/'.$fwp_path.'/feedwordpress-tiny.png';
780 endif;
781
782 call_user_func_array('add_menu_page', $menu);
783 add_submenu_page($fwp_path.'/syndication.php', 'Syndicated Feeds & Updates', 'Feeds & Updates', $fwp_capability['manage_options'], $fwp_path.'/feeds-page.php');
784 add_submenu_page($fwp_path.'/syndication.php', 'Syndicated Posts & Links', 'Posts & Links', $fwp_capability['manage_options'], $fwp_path.'/posts-page.php');
785 add_submenu_page($fwp_path.'/syndication.php', 'Syndicated Authors', 'Authors', $fwp_capability['manage_options'], $fwp_path.'/authors-page.php');
786 add_submenu_page($fwp_path.'/syndication.php', 'Categories'.FEEDWORDPRESS_AND_TAGS, 'Categories'.FEEDWORDPRESS_AND_TAGS, $fwp_capability['manage_options'], $fwp_path.'/categories-page.php');
787 add_submenu_page($fwp_path.'/syndication.php', 'FeedWordPress Performance', 'Performance', $fwp_capability['manage_options'], $fwp_path.'/performance-page.php');
788 add_submenu_page($fwp_path.'/syndication.php', 'FeedWordPress Diagnostics', 'Diagnostics', $fwp_capability['manage_options'], $fwp_path.'/diagnostics-page.php');
789 } /* function fwp_add_pages () */
790
791 function fwp_check_debug () {
792 // This is a horrible fucking kludge that I have to do because the
793 // admin notice code is triggered before the code that updates the
794 // setting.
795 if (isset($_POST['feedwordpress_debug'])) :
796 $feedwordpress_debug = $_POST['feedwordpress_debug'];
797 else :
798 $feedwordpress_debug = get_option('feedwordpress_debug');
799 endif;
800 if ($feedwordpress_debug==='yes') :
801 ?>
802 <div class="error">
803 <p><strong>FeedWordPress warning.</strong> Debugging mode is <strong>ON</strong>.
804 While it remains on, FeedWordPress displays many diagnostic error messages,
805 warnings, and notices that are ordinarily suppressed, and also turns off all
806 caching of feeds. Use with caution: this setting is absolutely inappropriate
807 for a production server.</p>
808 </div>
809 <?php
810 endif;
811 } /* function fwp_check_debug () */
812
813 ################################################################################
814 ## fwp_hold_pings() and fwp_release_pings(): Outbound XML-RPC ping reform ####
815 ## ... 'coz it's rude to send 500 pings the first time your aggregator runs ####
816 ################################################################################
817
818 $fwp_held_ping = NULL; // NULL: not holding pings yet
819
820 function fwp_hold_pings () {
821 global $fwp_held_ping;
822 if (is_null($fwp_held_ping)):
823 $fwp_held_ping = 0; // 0: ready to hold pings; none yet received
824 endif;
825 }
826
827 function fwp_release_pings () {
828 global $fwp_held_ping;
829 if ($fwp_held_ping):
830 if (function_exists('wp_schedule_single_event')) :
831 wp_schedule_single_event(time(), 'do_pings');
832 else :
833 generic_ping($fwp_held_ping);
834 endif;
835 endif;
836 $fwp_held_ping = NULL; // NULL: not holding pings anymore
837 }
838
839 function fwp_do_pings () {
840 if (!is_null($fwp_held_ping) and $post_id) : // Defer until we're done updating
841 $fwp_held_ping = $post_id;
842 elseif (function_exists('do_all_pings')) :
843 do_all_pings();
844 else :
845 generic_ping($fwp_held_ping);
846 endif;
847 }
848
849 function fwp_publish_post_hook ($post_id) {
850 global $fwp_held_ping;
851
852 if (!is_null($fwp_held_ping)) : // Syndicated post. Don't mark with _pingme
853 if ( defined('XMLRPC_REQUEST') )
854 do_action('xmlrpc_publish_post', $post_id);
855 if ( defined('APP_REQUEST') )
856 do_action('app_publish_post', $post_id);
857
858 if ( defined('WP_IMPORTING') )
859 return;
860
861 // Defer sending out pings until we finish updating
862 $fwp_held_ping = $post_id;
863 else :
864 if (function_exists('_publish_post_hook')) : // WordPress 2.3
865 _publish_post_hook($post_id);
866 endif;
867 endif;
868 }
869
870 function feedwordpress_add_post_edit_controls () {
871 add_meta_box('feedwordpress-post-controls', __('Syndication'), 'feedwordpress_post_edit_controls', 'post', 'side', 'high');
872 } // function FeedWordPress::postEditControls
873
874 function feedwordpress_post_edit_controls () {
875 global $post;
876
877 $frozen_values = get_post_custom_values('_syndication_freeze_updates', $post->ID);
878 $frozen_post = (count($frozen_values) > 0 and 'yes' == $frozen_values[0]);
879
880 if (is_syndicated($post->ID)) :
881 ?>
882 <p>This is a syndicated post, which originally appeared at
883 <cite><?php print esc_html(get_syndication_source(NULL, $post->ID)); ?></cite>.
884 <a href="<?php print esc_html(get_syndication_permalink($post->ID)); ?>">View original post</a>.</p>
885
886 <p><input type="hidden" name="feedwordpress_noncename" id="feedwordpress_noncename" value="<?php print wp_create_nonce(plugin_basename(__FILE__)); ?>" />
887 <label><input type="checkbox" name="freeze_updates" value="yes" <?php if ($frozen_post) : ?>checked="checked"<?php endif; ?> /> <strong>Manual editing.</strong>
888 If set, FeedWordPress will not overwrite the changes you make manually
889 to this post, if the syndicated content is updated on the
890 feed.</label></p>
891 <?php
892 else :
893 ?>
894 <p>This post was created locally at this website.</p>
895 <?php
896 endif;
897 } // function feedwordpress_post_edit_controls () */
898
899 function feedwordpress_save_post_edit_controls ( $post_id ) {
900 global $post;
901
902 if (!isset($_POST['feedwordpress_noncename']) or !wp_verify_nonce($_POST['feedwordpress_noncename'], plugin_basename(__FILE__))) :
903 return $post_id;
904 endif;
905
906 // Verify if this is an auto save routine. If it is our form has
907 // not been submitted, so we don't want to do anything.
908 if ( defined('DOING_AUTOSAVE') and DOING_AUTOSAVE ) :
909 return $post_id;
910 endif;
911
912 // Check permissions
913 if ( !current_user_can( 'edit_'.$_POST['post_type'], $post_id) ) :
914 return $post_id;
915 endif;
916
917 // OK, we're golden. Now let's save some data.
918 if (isset($_POST['freeze_updates'])) :
919 update_post_meta($post_id, '_syndication_freeze_updates', $_POST['freeze_updates']);
920 $ret = $_POST['freeze_updates'];
921 else :
922 delete_post_meta($post_id, '_syndication_freeze_updates');
923 $ret = NULL;
924 endif;
925
926 return $ret;
927 } // function feedwordpress_save_edit_controls
928
929 ################################################################################
930 ## class FeedWordPress #########################################################
931 ################################################################################
932
933 // class FeedWordPress: handles feed updates and plugs in to the XML-RPC interface
934 class FeedWordPress {
935 var $strip_attrs = array (
936 array('[a-z]+', 'style'),
937 array('[a-z]+', 'target'),
938 );
939 var $uri_attrs = array (
940 array('a', 'href'),
941 array('applet', 'codebase'),
942 array('area', 'href'),
943 array('blockquote', 'cite'),
944 array('body', 'background'),
945 array('del', 'cite'),
946 array('form', 'action'),
947 array('frame', 'longdesc'),
948 array('frame', 'src'),
949 array('iframe', 'longdesc'),
950 array('iframe', 'src'),
951 array('head', 'profile'),
952 array('img', 'longdesc'),
953 array('img', 'src'),
954 array('img', 'usemap'),
955 array('input', 'src'),
956 array('input', 'usemap'),
957 array('ins', 'cite'),
958 array('link', 'href'),
959 array('object', 'classid'),
960 array('object', 'codebase'),
961 array('object', 'data'),
962 array('object', 'usemap'),
963 array('q', 'cite'),
964 array('script', 'src')
965 );
966
967 var $feeds = NULL;
968
969 # function FeedWordPress (): Contructor; retrieve a list of feeds
970 function FeedWordPress () {
971 $this->feeds = array ();
972 $links = FeedWordPress::syndicated_links();
973 if ($links): foreach ($links as $link):
974 $this->feeds[] = new SyndicatedLink($link);
975 endforeach; endif;
976 } // FeedWordPress::FeedWordPress ()
977
978 # function update (): polls for updates on one or more Contributor feeds
979 #
980 # Arguments:
981 # ----------
982 # * $uri (string): either the URI of the feed to poll, the URI of the
983 # (human-readable) website whose feed you want to poll, or NULL.
984 #
985 # If $uri is NULL, then FeedWordPress will poll any feeds that are
986 # ready for polling. It will not poll feeds that are marked as
987 # "Invisible" Links (signifying that the subscription has been
988 # de-activated), or feeds that are not yet stale according to their
989 # TTL setting (which is either set in the feed, or else set
990 # randomly within a window of 30 minutes - 2 hours).
991 #
992 # Returns:
993 # --------
994 # * Normally returns an associative array, with 'new' => the number
995 # of new posts added during the update, and 'updated' => the number
996 # of old posts that were updated during the update. If both numbers
997 # are zero, there was no change since the last poll on that URI.
998 #
999 # * Returns NULL if URI it was passed was not a URI that this
1000 # installation of FeedWordPress syndicates.
1001 #
1002 # Effects:
1003 # --------
1004 # * One or more feeds are polled for updates
1005 #
1006 # * If the feed Link does not have a hardcoded name set, its Link
1007 # Name is synchronized with the feed's title element
1008 #
1009 # * If the feed Link does not have a hardcoded URI set, its Link URI
1010 # is synchronized with the feed's human-readable link element
1011 #
1012 # * If the feed Link does not have a hardcoded description set, its
1013 # Link Description is synchronized with the feed's description,
1014 # tagline, or subtitle element.
1015 #
1016 # * The time of polling is recorded in the feed's settings, and the
1017 # TTL (time until the feed is next available for polling) is set
1018 # either from the feed (if it is supplied in the ttl or syndication
1019 # module elements) or else from a randomly-generated time window
1020 # (between 30 minutes and 2 hours).
1021 #
1022 # * New posts from the polled feed are added to the WordPress store.
1023 #
1024 # * Updates to existing posts since the last poll are mirrored in the
1025 # WordPress store.
1026 #
1027 function update ($uri = null, $crash_ts = null) {
1028 global $wpdb;
1029
1030 if (FeedWordPress::needs_upgrade()) : // Will make duplicate posts if we don't hold off
1031 return NULL;
1032 endif;
1033
1034 if (!is_null($uri)) :
1035 $uri = trim($uri);
1036 else : // Update all
1037 update_option('feedwordpress_last_update_all', time());
1038 endif;
1039
1040 do_action('feedwordpress_update', $uri);
1041
1042 if (is_null($crash_ts)) :
1043 $crash_dt = (int) get_option('feedwordpress_update_time_limit');
1044 if ($crash_dt > 0) :
1045 $crash_ts = time() + $crash_dt;
1046 else :
1047 $crash_ts = NULL;
1048 endif;
1049 endif;
1050
1051 // Randomize order for load balancing purposes
1052 $feed_set = $this->feeds;
1053 shuffle($feed_set);
1054
1055 // Loop through and check for new posts
1056 $delta = NULL;
1057 foreach ($feed_set as $feed) :
1058 if (!is_null($crash_ts) and (time() > $crash_ts)) : // Check whether we've exceeded the time limit
1059 break;
1060 endif;
1061
1062 $pinged_that = (is_null($uri) or ($uri=='*') or in_array($uri, array($feed->uri(), $feed->homepage())));
1063
1064 if (!is_null($uri)) : // A site-specific ping always updates
1065 $timely = true;
1066 else :
1067 $timely = $feed->stale();
1068 endif;
1069
1070 if ($pinged_that and is_null($delta)) : // If at least one feed was hit for updating...
1071 $delta = array('new' => 0, 'updated' => 0); // ... don't return error condition
1072 endif;
1073
1074 if ($pinged_that and $timely) :
1075 do_action('feedwordpress_check_feed', $feed->settings);
1076 $start_ts = time();
1077 $added = $feed->poll($crash_ts);
1078 do_action('feedwordpress_check_feed_complete', $feed->settings, $added, time() - $start_ts);
1079
1080 if (is_array($added)) : // Success
1081 if (isset($added['new'])) : $delta['new'] += $added['new']; endif;
1082 if (isset($added['updated'])) : $delta['updated'] += $added['updated']; endif;
1083 endif;
1084 endif;
1085 endforeach;
1086
1087 do_action('feedwordpress_update_complete', $delta);
1088
1089 return $delta;
1090 }
1091
1092 function stale () {
1093 if (get_option('feedwordpress_automatic_updates')) :
1094 // Do our best to avoid possible simultaneous
1095 // updates by getting up-to-the-minute settings.
1096
1097 $last = get_option('feedwordpress_last_update_all');
1098
1099 // If we haven't updated all yet, give it a time window
1100 if (false === $last) :
1101 $ret = false;
1102 update_option('feedwordpress_last_update_all', time());
1103
1104 // Otherwise, check against freshness interval
1105 elseif (is_numeric($last)) : // Expect a timestamp
1106 $freshness = get_option('feedwordpress_freshness');
1107 if (false === $freshness) : // Use default
1108 $freshness = FEEDWORDPRESS_FRESHNESS_INTERVAL;
1109 endif;
1110 $ret = ( (time() - $last) > $freshness);
1111
1112 // This should never happen.
1113 else :
1114 FeedWordPress::critical_bug('FeedWordPress::stale::last', $last, __LINE__);
1115 endif;
1116
1117 else :
1118 $ret = false;
1119 endif;
1120 return $ret;
1121 } // FeedWordPress::stale()
1122
1123 function update_requested () {
1124 return (
1125 isset($_REQUEST['update_feedwordpress'])
1126 and $_REQUEST['update_feedwordpress']
1127 );
1128 } // FeedWordPress::update_requested()
1129
1130 function update_requested_url () {
1131 $ret = null;
1132
1133 if (($_REQUEST['update_feedwordpress']=='*')
1134 or (preg_match('|^http://.*|i', $_REQUEST['update_feedwordpress']))) :
1135 $ret = $_REQUEST['update_feedwordpress'];
1136 endif;
1137
1138 return $ret;
1139 } // FeedWordPress::update_requested_url()
1140
1141 function syndicate_link ($name, $uri, $rss) {
1142 global $wpdb;
1143
1144 // Get the category ID#
1145 $cat_id = FeedWordPress::link_category_id();
1146
1147 // WordPress gets cranky if there's no homepage URI
1148 if (!isset($uri) or strlen($uri)<1) : $uri = $rss; endif;
1149
1150 if (function_exists('wp_insert_link')) : // WordPress 2.x
1151 if (FeedWordPressCompatibility::test_version(0, FWP_SCHEMA_21)) :
1152 // Morons.
1153 $name = $wpdb->escape($name);
1154 $uri = $wpdb->escape($uri);
1155 $rss = $wpdb->escape($rss);
1156
1157 // Comes in as a single category
1158 $linkCats = $cat_id;
1159 else :
1160 // Comes in as an array of categories
1161 $linkCats = array($cat_id);
1162 endif;
1163
1164 $link_id = wp_insert_link(array(
1165 "link_name" => $name,
1166 "link_url" => $uri,
1167 "link_category" => $linkCats,
1168 "link_rss" => $rss
1169 ));
1170 else : // WordPress 1.5.x
1171 $result = $wpdb->query("
1172 INSERT INTO $wpdb->links
1173 SET
1174 link_name = '".$wpdb->escape($name)."',
1175 link_url = '".$wpdb->escape($uri)."',
1176 link_category = '".$wpdb->escape($cat_id)."',
1177 link_rss = '".$wpdb->escape($rss)."'
1178 ");
1179 $link_id = $wpdb->insert_id;
1180 endif;
1181 return $link_id;
1182 } // function FeedWordPress::syndicate_link()
1183
1184 /*static*/ function syndicated_status ($what, $default) {
1185 $ret = get_option("feedwordpress_syndicated_{$what}_status");
1186 if (!$ret) :
1187 $ret = $default;
1188 endif;
1189 return $ret;
1190 } /* FeedWordPress::syndicated_status() */
1191
1192 function on_unfamiliar ($what = 'author', $override = NULL) {
1193 $set = array(
1194 'author' => array('create', 'default', 'filter'),
1195 'category' => array('create', 'tag', 'default', 'filter'),
1196 );
1197
1198 if (is_string($override)) :
1199 $ret = strtolower($override);
1200 else :
1201 $ret = NULL;
1202 endif;
1203
1204 if (!is_numeric($override) and !in_array($ret, $set[$what])) :
1205 $ret = get_option('feedwordpress_unfamiliar_'.$what);
1206 if (!is_numeric($ret) and !in_array($ret, $set[$what])) :
1207 $ret = 'create';
1208 endif;
1209 endif;
1210
1211 return $ret;
1212 } // function FeedWordPress::on_unfamiliar()
1213
1214 function null_email_set () {
1215 $base = get_option('feedwordpress_null_email_set');
1216
1217 if ($base===false) :
1218 $ret = array('noreply@blogger.com'); // default
1219 else :
1220 $ret = array_map('strtolower',
1221 array_map('trim', explode("\n", $base)));
1222 endif;
1223 $ret = apply_filters('syndicated_item_author_null_email_set', $ret);
1224 return $ret;
1225
1226 } /* FeedWordPress::null_email_set () */
1227
1228 function is_null_email ($email) {
1229 $ret = in_array(strtolower(trim($email)), FeedWordPress::null_email_set());
1230 $ret = apply_filters('syndicated_item_author_is_null_email', $ret, $email);
1231 return $ret;
1232 } /* FeedWordPress::is_null_email () */
1233
1234 function use_aggregator_source_data () {
1235 $ret = get_option('feedwordpress_use_aggregator_source_data');
1236 return apply_filters('syndicated_post_use_aggregator_source_data', ($ret=='yes'));
1237 }
1238
1239 /**
1240 * FeedWordPress::munge_permalinks: check whether or not FeedWordPress
1241 * should rewrite permalinks for syndicated items to reflect their
1242 * original location.
1243 *
1244 * @return bool TRUE if FeedWordPress SHOULD rewrite permalinks; FALSE otherwise
1245 */
1246 /*static*/ function munge_permalinks () {
1247 return (get_option('feedwordpress_munge_permalink', /*default=*/ 'yes') != 'no');
1248 } /* FeedWordPress::munge_permalinks() */
1249
1250 function syndicated_links () {
1251 $contributors = FeedWordPress::link_category_id();
1252 if (function_exists('get_bookmarks')) :
1253 $links = get_bookmarks(array("category" => $contributors));
1254 else:
1255 $links = get_linkobjects($contributors); // deprecated as of WP 2.1
1256 endif;
1257 return $links;
1258 } // function FeedWordPress::syndicated_links()
1259
1260 function link_category_id () {
1261 global $wpdb, $wp_db_version;
1262
1263 $cat_id = get_option('feedwordpress_cat_id');
1264
1265 // If we don't yet have the category ID stored, search by name
1266 if (!$cat_id) :
1267 $cat_id = FeedWordPressCompatibility::link_category_id(DEFAULT_SYNDICATION_CATEGORY);
1268
1269 if ($cat_id) :
1270 // We found it; let's stamp it.
1271 update_option('feedwordpress_cat_id', $cat_id);
1272 endif;
1273
1274 // If we *do* have the category ID stored, verify that it exists
1275 else :
1276 $cat_id = FeedWordPressCompatibility::link_category_id((int) $cat_id, 'cat_id');
1277 endif;
1278
1279 // If we could not find an appropriate link category,
1280 // make a new one for ourselves.
1281 if (!$cat_id) :
1282 $cat_id = FeedWordPressCompatibility::insert_link_category(DEFAULT_SYNDICATION_CATEGORY);
1283
1284 // Stamp it
1285 update_option('feedwordpress_cat_id', $cat_id);
1286 endif;
1287
1288 return $cat_id;
1289 } // function FeedWordPress::link_category_id()
1290
1291 # Upgrades and maintenance...
1292 function needs_upgrade () {
1293 global $wpdb;
1294 $fwp_db_version = get_option('feedwordpress_version');
1295 $ret = false; // innocent until proven guilty
1296 if (!$fwp_db_version or $fwp_db_version < FEEDWORDPRESS_VERSION) :
1297 // This is an older version or a fresh install. Does it
1298 // require a database upgrade or database initialization?
1299 if ($fwp_db_version <= 0.96) :
1300 // Yes. Check to see whether this is a fresh install or an upgrade.
1301 $syn = $wpdb->get_col("
1302 SELECT post_id
1303 FROM $wpdb->postmeta
1304 WHERE meta_key = 'syndication_feed'
1305 ");
1306 if (count($syn) > 0) : // contains at least one syndicated post
1307 $ret = true;
1308 else : // fresh install; brand it as ours
1309 update_option('feedwordpress_version', FEEDWORDPRESS_VERSION);
1310 endif;
1311 elseif ($fwp_db_version < 2009.0707) :
1312 // We need to clear out any busted AJAX crap
1313 if (fwp_test_wp_version(FWP_SCHEMA_HAS_USERMETA)) :
1314 $wpdb->query("
1315 DELETE FROM $wpdb->usermeta
1316 WHERE LOCATE('feedwordpress', meta_key)
1317 AND LOCATE('box', meta_key);
1318 ");
1319 endif;
1320 update_option('feedwordpress_version', FEEDWORDPRESS_VERSION);
1321 else :
1322 // No. Just brand it with the new version.
1323 update_option('feedwordpress_version', FEEDWORDPRESS_VERSION);
1324 endif;
1325 endif;
1326 return $ret;
1327 }
1328
1329 function upgrade_database ($from = NULL) {
1330 global $wpdb;
1331
1332 if (is_null($from) or $from <= 0.96) : $from = 0.96; endif;
1333
1334 switch ($from) :
1335 case 0.96:
1336 // Dropping legacy upgrade code. If anyone is still
1337 // using 0.96 and just now decided to upgrade, well, I'm
1338 // sorry about that. You'll just have to cope with a few
1339 // duplicate posts.
1340
1341 // Mark the upgrade as successful.
1342 update_option('feedwordpress_version', FEEDWORDPRESS_VERSION);
1343 endswitch;
1344 echo "<p>Upgrade complete. FeedWordPress is now ready to use again.</p>";
1345 } /* FeedWordPress::upgrade_database() */
1346
1347 function has_guid_index () {
1348 global $wpdb;
1349
1350 $found = false; // Guilty until proven innocent.
1351
1352 $results = $wpdb->get_results("
1353 SHOW INDEXES FROM {$wpdb->posts}
1354 ");
1355 if ($results) :
1356 foreach ($results as $index) :
1357 if (isset($index->Column_name)
1358 and ('guid' == $index->Column_name)) :
1359 $found = true;
1360 endif;
1361 endforeach;
1362 endif;
1363 return $found;
1364 } /* FeedWordPress::has_guid_index () */
1365
1366 function create_guid_index () {
1367 global $wpdb;
1368
1369 $wpdb->query("
1370 CREATE INDEX {$wpdb->posts}_guid_idx ON {$wpdb->posts}(guid)
1371 ");
1372 } /* FeedWordPress::create_guid_index () */
1373
1374 function remove_guid_index () {
1375 global $wpdb;
1376
1377 $wpdb->query("
1378 DROP INDEX {$wpdb->posts}_guid_idx ON {$wpdb->posts}
1379 ");
1380 }
1381
1382 /*static*/ function fetch ($url) {
1383 $feed = new SimplePie();
1384 $feed->set_feed_url($url);
1385 $feed->set_cache_class('WP_Feed_Cache');
1386 $feed->set_file_class('WP_SimplePie_File');
1387 $feed->set_content_type_sniffer_class('FeedWordPress_Content_Type_Sniffer');
1388 $feed->set_cache_duration(FeedWordPress::cache_duration());
1389 $feed->init();
1390 $feed->handle_content_type();
1391
1392 if ($feed->error()) :
1393 $ret = new WP_Error('simplepie-error', $feed->error());
1394 else :
1395 $ret = $feed;
1396 endif;
1397 return $ret;
1398 } /* FeedWordPress::fetch () */
1399
1400 function clear_cache () {
1401 global $wpdb;
1402
1403 // The WordPress SimplePie module stores its cached feeds as
1404 // transient records in the options table. The data itself is
1405 // stored in `_transient_feed_{md5 of url}` and the last-modified
1406 // timestamp in `_transient_feed_mod_{md5 of url}`. Timeouts for
1407 // these records are stored in `_transient_timeout_feed_{md5}`.
1408 // Since the md5 is always 32 characters in length, the
1409 // option_name is always over 32 characters.
1410 $ret = $wpdb->query("
1411 DELETE FROM {$wpdb->options}
1412 WHERE option_name LIKE '_transient%_feed_%' AND LENGTH(option_name) > 32
1413 ");
1414 return (int) ($ret / 4); // Each transient has 4 rows: the data, the modified timestamp; and the timeouts for each
1415 } /* FeedWordPress::clear_cache () */
1416
1417 function cache_duration () {
1418 $duration = NULL;
1419 if (defined('FEEDWORDPRESS_CACHE_AGE')) :
1420 $duration = FEEDWORDPRESS_CACHE_AGE;
1421 endif;
1422 return $duration;
1423 }
1424 function cache_lifetime ($duration) {
1425 // Check for explicit setting of a lifetime duration
1426 if (defined('FEEDWORDPRESS_CACHE_LIFETIME')) :
1427 $duration = FEEDWORDPRESS_CACHE_LIFETIME;
1428
1429 // Fall back to the cache freshness duration
1430 elseif (defined('FEEDWORDPRESS_CACHE_AGE')) :
1431 $duration = FEEDWORDPRESS_CACHE_AGE;
1432 endif;
1433
1434 // Fall back to WordPress default
1435 return $duration;
1436 } /* FeedWordPress::cache_lifetime () */
1437
1438 # Utility functions for handling text settings
1439 function negative ($f, $setting) {
1440 $nego = array ('n', 'no', 'f', 'false');
1441 return (isset($f[$setting]) and in_array(strtolower($f[$setting]), $nego));
1442 }
1443
1444 function affirmative ($f, $setting) {
1445 $affirmo = array ('y', 'yes', 't', 'true', 1);
1446 return (isset($f[$setting]) and in_array(strtolower($f[$setting]), $affirmo));
1447 }
1448
1449
1450 # Internal debugging functions
1451 function critical_bug ($varname, $var, $line) {
1452 global $wp_version;
1453
1454 echo '<p>There may be a bug in FeedWordPress. Please <a href="'.FEEDWORDPRESS_AUTHOR_CONTACT.'">contact the author</a> and paste the following information into your e-mail:</p>';
1455 echo "\n<plaintext>";
1456 echo "Triggered at line # ".$line."\n";
1457 echo "FeedWordPress version: ".FEEDWORDPRESS_VERSION."\n";
1458 echo "WordPress version: {$wp_version}\n";
1459 echo "PHP version: ".phpversion()."\n";
1460 echo "\n";
1461 echo $varname.": "; var_dump($var); echo "\n";
1462 die;
1463 }
1464
1465 function noncritical_bug ($varname, $var, $line) {
1466 if (FEEDWORDPRESS_DEBUG) : // halt only when we are doing debugging
1467 FeedWordPress::critical_bug($varname, $var, $line);
1468 endif;
1469 }
1470
1471 function val ($v, $no_newlines = false) {
1472 ob_start();
1473 var_dump($v);
1474 $out = ob_get_contents(); ob_end_clean();
1475
1476 if ($no_newlines) :
1477 $out = preg_replace('/\s+/', " ", $out);
1478 endif;
1479 return $out;
1480 } /* FeedWordPress:val () */
1481
1482 function diagnostic ($level, $out) {
1483 global $feedwordpress_admin_footer;
1484
1485 $output = get_option('feedwordpress_diagnostics_output', array());
1486 $show = get_option('feedwordpress_diagnostics_show', array());
1487
1488 $diagnostic_nesting = count(explode(":", $level));
1489
1490 if (in_array($level, $show)) :
1491 foreach ($output as $method) :
1492 switch ($method) :
1493 case 'echo' :
1494 echo "<div><pre><strong>Diag".str_repeat('====', $diagnostic_nesting-1).'|</strong> '.esc_html($out)."</pre></div>";
1495 break;
1496 case 'admin_footer' :
1497 $feedwordpress_admin_footer[] = $out;
1498 break;
1499 case 'error_log' :
1500 error_log('[feedwordpress]' . $out);
1501 break;
1502 endswitch;
1503 endforeach;
1504 endif;
1505 } /* FeedWordPress::diagnostic () */
1506
1507 function admin_footer () {
1508 global $feedwordpress_admin_footer;
1509 foreach ($feedwordpress_admin_footer as $line) :
1510 echo '<div><pre>'.esc_html($line).'</pre></div>';
1511 endforeach;
1512 } /* FeedWordPress::admin_footer () */
1513 } // class FeedWordPress
1514
1515 $feedwordpress_admin_footer = array();
1516
1517 require_once(dirname(__FILE__) . '/syndicatedpost.class.php');
1518 require_once(dirname(__FILE__) . '/syndicatedlink.class.php');
1519
1520 ################################################################################
1521 ## XML-RPC HOOKS: accept XML-RPC update pings from Contributors ################
1522 ################################################################################
1523
1524 function feedwordpress_xmlrpc_hook ($args = array ()) {
1525 $args['weblogUpdates.ping'] = 'feedwordpress_pong';
1526 return $args;
1527 }
1528
1529 function feedwordpress_pong ($args) {
1530 $feedwordpress = new FeedWordPress;
1531 $delta = @$feedwordpress->update($args[1]);
1532 if (is_null($delta)):
1533 return array('flerror' => true, 'message' => "Sorry. I don't syndicate <$args[1]>.");
1534 else:
1535 $mesg = array();
1536 if (isset($delta['new'])) { $mesg[] = ' '.$delta['new'].' new posts were syndicated'; }
1537 if (isset($delta['updated'])) { $mesg[] = ' '.$delta['updated'].' existing posts were updated'; }
1538
1539 return array('flerror' => false, 'message' => "Thanks for the ping.".implode(' and', $mesg));
1540 endif;
1541 }
1542
1543 require_once(dirname(__FILE__) . '/relative_uri.class.php');
1544
1545 // take your best guess at the realname and e-mail, given a string
1546 define('FWP_REGEX_EMAIL_ADDY', '([^@"(<\s]+@[^"@(<\s]+\.[^"@(<\s]+)');
1547 define('FWP_REGEX_EMAIL_NAME', '("([^"]*)"|([^"<(]+\S))');
1548 define('FWP_REGEX_EMAIL_POSTFIX_NAME', '/^\s*'.FWP_REGEX_EMAIL_ADDY."\s+\(".FWP_REGEX_EMAIL_NAME.'\)\s*$/');
1549 define('FWP_REGEX_EMAIL_PREFIX_NAME', '/^\s*'.FWP_REGEX_EMAIL_NAME.'\s*<'.FWP_REGEX_EMAIL_ADDY.'>\s*$/');
1550 define('FWP_REGEX_EMAIL_JUST_ADDY', '/^\s*'.FWP_REGEX_EMAIL_ADDY.'\s*$/');
1551 define('FWP_REGEX_EMAIL_JUST_NAME', '/^\s*'.FWP_REGEX_EMAIL_NAME.'\s*$/');
1552
1553 function parse_email_with_realname ($email) {
1554 if (preg_match(FWP_REGEX_EMAIL_POSTFIX_NAME, $email, $matches)) :
1555 ($ret['name'] = $matches[3]) or ($ret['name'] = $matches[2]);
1556 $ret['email'] = $matches[1];
1557 elseif (preg_match(FWP_REGEX_EMAIL_PREFIX_NAME, $email, $matches)) :
1558 ($ret['name'] = $matches[2]) or ($ret['name'] = $matches[3]);
1559 $ret['email'] = $matches[4];
1560 elseif (preg_match(FWP_REGEX_EMAIL_JUST_ADDY, $email, $matches)) :
1561 $ret['name'] = NULL; $ret['email'] = $matches[1];
1562 elseif (preg_match(FWP_REGEX_EMAIL_JUST_NAME, $email, $matches)) :
1563 $ret['email'] = NULL;
1564 ($ret['name'] = $matches[2]) or ($ret['name'] = $matches[3]);
1565 else :
1566 $ret['name'] = NULL; $ret['email'] = NULL;
1567 endif;
1568 return $ret;
1569 }
1570
1571