include/rssfuncs.php

   1 <?php
   2         define('DAEMON_UPDATE_LOGIN_LIMIT', 30);
   3         define('DAEMON_FEED_LIMIT', 100);
   4         define('DAEMON_SLEEP_INTERVAL', 60);
   5
   6         function update_feedbrowser_cache($link) {
   7
   8                 $result = db_query($link, "SELECT feed_url, site_url, title, COUNT(id) AS subscribers
   9                         FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
  10                                 WHERE tf.feed_url = ttrss_feeds.feed_url
  11                                 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
  12                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  13
  14                 db_query($link, "BEGIN");
  15
  16                 db_query($link, "DELETE FROM ttrss_feedbrowser_cache");
  17
  18                 $count = 0;
  19
  20                 while ($line = db_fetch_assoc($result)) {
  21                         $subscribers = db_escape_string($line["subscribers"]);
  22                         $feed_url = db_escape_string($line["feed_url"]);
  23                         $title = db_escape_string($line["title"]);
  24                         $site_url = db_escape_string($line["site_url"]);
  25
  26                         $tmp_result = db_query($link, "SELECT subscribers FROM
  27                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  28
  29                         if (db_num_rows($tmp_result) == 0) {
  30
  31                                 db_query($link, "INSERT INTO ttrss_feedbrowser_cache
  32                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  33                                                 '$site_url', '$title', '$subscribers')");
  34
  35                                 ++$count;
  36
  37                         }
  38
  39                 }
  40
  41                 db_query($link, "COMMIT");
  42
  43                 return $count;
  44
  45         }
  46
  47
  48         /**
  49          * Update a feed batch.
  50          * Used by daemons to update n feeds by run.
  51          * Only update feed needing a update, and not being processed
  52          * by another process.
  53          *
  54          * @param mixed $link Database link
  55          * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
  56          * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
  57          * @param boolean $debug Set to false to disable debug output. Default to true.
  58          * @return void
  59          */
  60         function update_daemon_common($link, $limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  61                 // Process all other feeds using last_updated and interval parameters
  62
  63                 define('PREFS_NO_CACHE', true);
  64
  65                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  66                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  67                         if (DB_TYPE == "pgsql") {
  68                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  69                         } else {
  70                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  71                         }
  72                 } else {
  73                         $login_thresh_qpart = "";
  74                 }
  75
  76                 // Test if the feed need a update (update interval exceded).
  77                 if (DB_TYPE == "pgsql") {
  78                         $update_limit_qpart = "AND ((
  79                                         ttrss_feeds.update_interval = 0
  80                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
  81                                 ) OR (
  82                                         ttrss_feeds.update_interval > 0
  83                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
  84                                 ) OR ttrss_feeds.last_updated IS NULL
  85                                 OR last_updated = '1970-01-01 00:00:00')";
  86                 } else {
  87                         $update_limit_qpart = "AND ((
  88                                         ttrss_feeds.update_interval = 0
  89                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
  90                                 ) OR (
  91                                         ttrss_feeds.update_interval > 0
  92                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
  93                                 ) OR ttrss_feeds.last_updated IS NULL
  94                                 OR last_updated = '1970-01-01 00:00:00')";
  95                 }
  96
  97                 // Test if feed is currently being updated by another process.
  98                 if (DB_TYPE == "pgsql") {
  99                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '5 minutes')";
 100                 } else {
 101                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 5 MINUTE))";
 102                 }
 103
 104                 // Test if there is a limit to number of updated feeds
 105                 $query_limit = "";
 106                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 107
 108                 $random_qpart = sql_random_function();
 109
 110                 // We search for feed needing update.
 111                 $result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id, ttrss_feeds.owner_uid,
 112                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
 113                                 ttrss_feeds.update_interval
 114                         FROM
 115                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 116                         WHERE
 117                                 ttrss_feeds.owner_uid = ttrss_users.id
 118                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 119                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 120                                 $login_thresh_qpart $update_limit_qpart
 121                          $updstart_thresh_qpart
 122                         ORDER BY $random_qpart $query_limit");
 123
 124                 $user_prefs_cache = array();
 125
 126                 if($debug) _debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
 127
 128                 // Here is a little cache magic in order to minimize risk of double feed updates.
 129                 $feeds_to_update = array();
 130                 while ($line = db_fetch_assoc($result)) {
 131                         $feeds_to_update[$line['id']] = $line;
 132                 }
 133
 134                 // We update the feed last update started date before anything else.
 135                 // There is no lag due to feed contents downloads
 136                 // It prevent an other process to update the same feed.
 137                 $feed_ids = array_keys($feeds_to_update);
 138                 if($feed_ids) {
 139                         db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 140                                 WHERE id IN (%s)", implode(',', $feed_ids)));
 141                 }
 142
 143                 expire_cached_files($debug);
 144                 expire_lock_files($debug);
 145
 146                 // For each feed, we call the feed update function.
 147                 while ($line = array_pop($feeds_to_update)) {
 148
 149                         if($debug) _debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
 150
 151                         update_rss_feed($link, $line["id"], true);
 152
 153                         sleep(1); // prevent flood (FIXME make this an option?)
 154                 }
 155
 156                 require_once "digest.php";
 157
 158                 // Send feed digests by email if needed.
 159                 send_headlines_digests($link, $debug);
 160
 161                 // Purge feeds with stale data OR not being updated for a while to keep DB size down
 162
 163                 if ($debug) _debug("Purging inactive feeds...");
 164
 165                 if (DB_TYPE == "pgsql") {
 166                         $interval_qpart = "NOW() - INTERVAL '1 month'";
 167                 } else {
 168                         $interval_qpart = "DATE_SUB(NOW(), INTERVAL 1 MONTH)";
 169                 }
 170
 171                 $result = db_query($link, "SELECT id, feed_url FROM ttrss_feeds WHERE
 172                                         (SELECT MAX(updated) FROM ttrss_entries, ttrss_user_entries WHERE
 173                                                 ttrss_entries.id = ref_id AND
 174                                                 ttrss_user_entries.feed_id = ttrss_feeds.id) < $interval_qpart OR
 175                                         last_updated < $interval_qpart");
 176
 177                 $feeds_purged = 0;
 178                 $articles_removed = 0;
 179
 180                 while ($line = db_fetch_assoc($result)) {
 181                         $articles_removed += purge_feed($link, $line["id"], 0, false);
 182
 183                         db_query($link, "UPDATE ttrss_feeds SET last_updated = NOW() WHERE
 184                                 id = " . $line["id"]);
 185
 186                         ++$feeds_purged;
 187                 }
 188
 189                 if ($debug && $articles_removed > 0)
 190                         _debug(sprintf("Purged %d feeds (%d articles).", $feeds_purged,
 191                                 $articles_removed));
 192
 193         } // function update_daemon_common
 194
 195         // ignore_daemon is not used
 196         function update_rss_feed($link, $feed, $ignore_daemon = false, $no_cache = false,
 197                 $override_url = false) {
 198
 199                 require_once "lib/simplepie/simplepie.inc";
 200
 201                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 202
 203                 if ($debug_enabled) {
 204                         _debug("update_rss_feed: start");
 205                 }
 206
 207                 $result = db_query($link, "SELECT id,update_interval,auth_login,
 208                         feed_url,auth_pass,cache_images,last_updated,
 209                         mark_unread_on_update, owner_uid,
 210                         pubsub_state
 211                         FROM ttrss_feeds WHERE id = '$feed'");
 212
 213                 if (db_num_rows($result) == 0) {
 214                         if ($debug_enabled) {
 215                                 _debug("update_rss_feed: feed $feed NOT FOUND/SKIPPED");
 216                         }
 217                         return false;
 218                 }
 219
 220                 $last_updated = db_fetch_result($result, 0, "last_updated");
 221                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 222                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 223                         0, "mark_unread_on_update"));
 224                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 225
 226                 db_query($link, "UPDATE ttrss_feeds SET last_update_started = NOW()
 227                         WHERE id = '$feed'");
 228
 229                 $auth_login = db_fetch_result($result, 0, "auth_login");
 230                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 231
 232                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 233                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 234
 235                 $feed = db_escape_string($feed);
 236
 237                 /* if ($auth_login && $auth_pass ){
 238                         $url_parts = array();
 239                         preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
 240
 241                         if ($url_parts[1] && $url_parts[2]) {
 242                                 $fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
 243                         }
 244                 } */
 245
 246                 if ($override_url)
 247                         $fetch_url = $override_url;
 248
 249                 if ($debug_enabled) {
 250                         _debug("update_rss_feed: fetching [$fetch_url]...");
 251                 }
 252
 253                 // Ignore cache if new feed or manual update.
 254                 $cache_age = (is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
 255                         -1 : get_feed_update_interval($link, $feed) * 60;
 256
 257                 $simplepie_cache_dir = CACHE_DIR . "/simplepie";
 258
 259                 if (!is_dir($simplepie_cache_dir)) {
 260                         mkdir($simplepie_cache_dir);
 261                 }
 262
 263                 $feed_data = fetch_file_contents($fetch_url, false,
 264                         $auth_login, $auth_pass, false, $no_cache ? 15 : 45);
 265
 266                 if (!$feed_data) {
 267                         global $fetch_last_error;
 268
 269                         if ($debug_enabled) {
 270                                 _debug("update_rss_feed: unable to fetch: $fetch_last_error");
 271                         }
 272
 273                         db_query($link,
 274                                 "UPDATE ttrss_feeds SET last_error = '$fetch_last_error',
 275                                         last_updated = NOW() WHERE id = '$feed'");
 276
 277                         return;
 278                 }
 279
 280                 $pluginhost = new PluginHost($link);
 281                 $pluginhost->set_debug($debug_enabled);
 282                 $user_plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 283
 284                 $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
 285                 $pluginhost->load($user_plugins, $pluginhost::KIND_USER, $owner_uid);
 286                 $pluginhost->load_data();
 287
 288                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_FEED_FETCHED) as $plugin) {
 289                         $feed_data = $plugin->hook_feed_fetched($feed_data);
 290                 }
 291
 292                 if ($debug_enabled) {
 293                         _debug("update_rss_feed: fetch done, parsing...");
 294                 }
 295
 296                 $rss = new SimplePie();
 297                 $rss->set_sanitize_class("SanitizeDummy");
 298                 // simplepie ignores the above and creates default sanitizer anyway,
 299                 // so let's override it...
 300                 $rss->sanitize = new SanitizeDummy();
 301                 $rss->set_output_encoding('UTF-8');
 302                 $rss->set_raw_data($feed_data);
 303
 304                 if ($debug_enabled) {
 305                         _debug("feed update interval (sec): " .
 306                                 get_feed_update_interval($link, $feed)*60);
 307                 }
 308
 309                 $rss->enable_cache(!$no_cache);
 310
 311                 if (!$no_cache) {
 312                         $rss->set_cache_location($simplepie_cache_dir);
 313                         $rss->set_cache_duration($cache_age);
 314                 }
 315
 316                 @$rss->init();
 317
 318 //              print_r($rss);
 319
 320                 $feed = db_escape_string($feed);
 321
 322                 if (!$rss->error()) {
 323
 324                         // We use local pluginhost here because we need to load different per-user feed plugins
 325                         $pluginhost->run_hooks($pluginhost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 326
 327                         if ($debug_enabled) {
 328                                 _debug("update_rss_feed: processing feed data...");
 329                         }
 330
 331 //                      db_query($link, "BEGIN");
 332
 333                         if (DB_TYPE == "pgsql") {
 334                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 335                         } else {
 336                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 337                         }
 338
 339                         $result = db_query($link, "SELECT title,site_url,owner_uid,
 340                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 341                                                 favicon_needs_check
 342                                 FROM ttrss_feeds WHERE id = '$feed'");
 343
 344                         $registered_title = db_fetch_result($result, 0, "title");
 345                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 346                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 347                                 "favicon_needs_check"));
 348
 349                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 350
 351                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 352
 353                         if ($debug_enabled) {
 354                                 _debug("update_rss_feed: checking favicon...");
 355                         }
 356
 357                         if ($favicon_needs_check) {
 358                                 check_feed_favicon($site_url, $feed, $link);
 359
 360                                 db_query($link, "UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 361                                         WHERE id = '$feed'");
 362                         }
 363
 364                         if (!$registered_title || $registered_title == "[Unknown]") {
 365
 366                                 $feed_title = db_escape_string($rss->get_title());
 367
 368                                 if ($debug_enabled) {
 369                                         _debug("update_rss_feed: registering title: $feed_title");
 370                                 }
 371
 372                                 db_query($link, "UPDATE ttrss_feeds SET
 373                                         title = '$feed_title' WHERE id = '$feed'");
 374                         }
 375
 376                         if ($site_url && $orig_site_url != $site_url) {
 377                                 db_query($link, "UPDATE ttrss_feeds SET
 378                                         site_url = '$site_url' WHERE id = '$feed'");
 379                         }
 380
 381                         if ($debug_enabled) {
 382                                 _debug("update_rss_feed: loading filters & labels...");
 383                         }
 384
 385                         $filters = load_filters($link, $feed, $owner_uid);
 386                         $labels = get_all_labels($link, $owner_uid);
 387
 388                         if ($debug_enabled) {
 389                                 //print_r($filters);
 390                                 _debug("update_rss_feed: " . count($filters) . " filters loaded.");
 391                         }
 392
 393                         $items = $rss->get_items();
 394
 395                         if (!is_array($items)) {
 396                                 if ($debug_enabled) {
 397                                         _debug("update_rss_feed: no articles found.");
 398                                 }
 399
 400                                 db_query($link, "UPDATE ttrss_feeds
 401                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 402
 403                                 return; // no articles
 404                         }
 405
 406                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 407
 408                                 if ($debug_enabled) _debug("update_rss_feed: checking for PUSH hub...");
 409
 410                                 $feed_hub_url = false;
 411
 412                                 $links = $rss->get_links('hub');
 413
 414                                 if ($links && is_array($links)) {
 415                                         foreach ($links as $l) {
 416                                                 $feed_hub_url = $l;
 417                                                 break;
 418                                         }
 419                                 }
 420
 421                                 if ($debug_enabled) _debug("update_rss_feed: feed hub url: $feed_hub_url");
 422
 423                                 if ($feed_hub_url && function_exists('curl_init') &&
 424                                         !ini_get("open_basedir")) {
 425
 426                                         require_once 'lib/pubsubhubbub/subscriber.php';
 427
 428                                         $callback_url = get_self_url_prefix() .
 429                                                 "/public.php?op=pubsub&id=$feed";
 430
 431                                         $s = new Subscriber($feed_hub_url, $callback_url);
 432
 433                                         $rc = $s->subscribe($fetch_url);
 434
 435                                         if ($debug_enabled)
 436                                                 _debug("update_rss_feed: feed hub url found, subscribe request sent.");
 437
 438                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 1
 439                                                 WHERE id = '$feed'");
 440                                 }
 441                         }
 442
 443                         if ($debug_enabled) {
 444                                 _debug("update_rss_feed: processing articles...");
 445                         }
 446
 447                         foreach ($items as $item) {
 448                                 if ($_REQUEST['xdebug'] == 3) {
 449                                         print_r($item);
 450                                 }
 451
 452                                 $entry_guid = $item->get_id();
 453                                 if (!$entry_guid) $entry_guid = $item->get_link();
 454                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 455
 456                                 if ($debug_enabled) {
 457                                         _debug("update_rss_feed: guid $entry_guid");
 458                                 }
 459
 460                                 if (!$entry_guid) continue;
 461
 462                                 $entry_guid = "$owner_uid,$entry_guid";
 463
 464                                 $entry_timestamp = "";
 465
 466                                 $entry_timestamp = strtotime($item->get_date());
 467
 468                                 if ($entry_timestamp == -1 || !$entry_timestamp) {
 469                                         $entry_timestamp = time();
 470                                         $no_orig_date = 'true';
 471                                 } else {
 472                                         $no_orig_date = 'false';
 473                                 }
 474
 475                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 476
 477                                 if ($debug_enabled) {
 478                                         _debug("update_rss_feed: date $entry_timestamp [$entry_timestamp_fmt]");
 479                                 }
 480
 481                                 $entry_title = $item->get_title();
 482
 483                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 484
 485                                 if ($debug_enabled) {
 486                                         _debug("update_rss_feed: title $entry_title");
 487                                         _debug("update_rss_feed: link $entry_link");
 488                                 }
 489
 490                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 491
 492                                 $entry_content = $item->get_content();
 493                                 if (!$entry_content) $entry_content = $item->get_description();
 494
 495                                 if ($_REQUEST["xdebug"] == 2) {
 496                                         print "update_rss_feed: content: ";
 497                                         print $entry_content;
 498                                         print "\n";
 499                                 }
 500
 501                                 $entry_comments = $item->data["comments"];
 502
 503                                 if ($item->get_author()) {
 504                                         $entry_author_item = $item->get_author();
 505                                         $entry_author = $entry_author_item->get_name();
 506                                         if (!$entry_author) $entry_author = $entry_author_item->get_email();
 507
 508                                         $entry_author = db_escape_string($entry_author);
 509                                 }
 510
 511                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 512
 513                                 $entry_comments = db_escape_string(mb_substr($entry_comments, 0, 245));
 514                                 $entry_author = db_escape_string(mb_substr($entry_author, 0, 245));
 515
 516                                 $num_comments = $item->get_item_tags('http://purl.org/rss/1.0/modules/slash/', 'comments');
 517
 518                                 if (is_array($num_comments) && is_array($num_comments[0])) {
 519                                         $num_comments = (int) $num_comments[0]["data"];
 520                                 } else {
 521                                         $num_comments = 0;
 522                                 }
 523
 524                                 if ($debug_enabled) {
 525                                         _debug("update_rss_feed: num_comments: $num_comments");
 526                                         _debug("update_rss_feed: looking for tags [1]...");
 527                                 }
 528
 529                                 // parse <category> entries into tags
 530
 531                                 $additional_tags = array();
 532
 533                                 $additional_tags_src = $item->get_categories();
 534
 535                                 if (is_array($additional_tags_src)) {
 536                                         foreach ($additional_tags_src as $tobj) {
 537                                                 array_push($additional_tags, $tobj->get_term());
 538                                         }
 539                                 }
 540
 541                                 if ($debug_enabled) {
 542                                         _debug("update_rss_feed: category tags:");
 543                                         print_r($additional_tags);
 544                                 }
 545
 546                                 if ($debug_enabled) {
 547                                         _debug("update_rss_feed: looking for tags [2]...");
 548                                 }
 549
 550                                 $entry_tags = array_unique($additional_tags);
 551
 552                                 for ($i = 0; $i < count($entry_tags); $i++)
 553                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 554
 555                                 if ($debug_enabled) {
 556                                         //_debug("update_rss_feed: unfiltered tags found:");
 557                                         //print_r($entry_tags);
 558                                 }
 559
 560                                 if ($debug_enabled) {
 561                                         _debug("update_rss_feed: done collecting data.");
 562                                 }
 563
 564                                 // TODO: less memory-hungry implementation
 565
 566                                 if ($debug_enabled) {
 567                                         _debug("update_rss_feed: applying plugin filters..");
 568                                 }
 569
 570                                 // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
 571                                 $result = db_query($link, "SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
 572                                         WHERE ref_id = id AND guid = '".db_escape_string($entry_guid)."' AND owner_uid = $owner_uid");
 573
 574                                 if (db_num_rows($result) != 0) {
 575                                         $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
 576                                         $stored_article = array("title" => db_fetch_result($result, 0, "title"),
 577                                                 "content" => db_fetch_result($result, 0, "content"),
 578                                                 "link" => db_fetch_result($result, 0, "link"),
 579                                                 "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
 580                                                 "author" => db_fetch_result($result, 0, "author"));
 581                                 } else {
 582                                         $entry_plugin_data = "";
 583                                         $stored_article = array();
 584                                 }
 585
 586                                 $article = array("owner_uid" => $owner_uid, // read only
 587                                         "guid" => $entry_guid, // read only
 588                                         "title" => $entry_title,
 589                                         "content" => $entry_content,
 590                                         "link" => $entry_link,
 591                                         "tags" => $entry_tags,
 592                                         "plugin_data" => $entry_plugin_data,
 593                                         "author" => $entry_author,
 594                                         "stored" => $stored_article);
 595
 596                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_FILTER) as $plugin) {
 597                                         $article = $plugin->hook_article_filter($article);
 598                                 }
 599
 600                                 $entry_tags = $article["tags"];
 601                                 $entry_guid = db_escape_string($entry_guid);
 602                                 $entry_content = db_escape_string($article["content"], false);
 603                                 $entry_title = db_escape_string($article["title"]);
 604                                 $entry_author = db_escape_string($article["author"]);
 605                                 $entry_link = db_escape_string($article["link"]);
 606                                 $entry_plugin_data = db_escape_string($article["plugin_data"]);
 607
 608                                 if ($debug_enabled) {
 609                                         _debug("update_rss_feed: plugin data: $entry_plugin_data");
 610                                 }
 611
 612                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 613                                         $entry_content = cache_images($entry_content, $site_url, $debug_enabled);
 614
 615                                 $content_hash = "SHA1:" . sha1($entry_content);
 616
 617                                 db_query($link, "BEGIN");
 618
 619                                 $result = db_query($link, "SELECT id FROM       ttrss_entries
 620                                         WHERE guid = '$entry_guid'");
 621
 622                                 if (db_num_rows($result) == 0) {
 623
 624                                         if ($debug_enabled) {
 625                                                 _debug("update_rss_feed: base guid [$entry_guid] not found");
 626                                         }
 627
 628                                         // base post entry does not exist, create it
 629
 630                                         $result = db_query($link,
 631                                                 "INSERT INTO ttrss_entries
 632                                                         (title,
 633                                                         guid,
 634                                                         link,
 635                                                         updated,
 636                                                         content,
 637                                                         content_hash,
 638                                                         cached_content,
 639                                                         no_orig_date,
 640                                                         date_updated,
 641                                                         date_entered,
 642                                                         comments,
 643                                                         num_comments,
 644                                                         plugin_data,
 645                                                         author)
 646                                                 VALUES
 647                                                         ('$entry_title',
 648                                                         '$entry_guid',
 649                                                         '$entry_link',
 650                                                         '$entry_timestamp_fmt',
 651                                                         '$entry_content',
 652                                                         '$content_hash',
 653                                                         '',
 654                                                         $no_orig_date,
 655                                                         NOW(),
 656                                                         NOW(),
 657                                                         '$entry_comments',
 658                                                         '$num_comments',
 659                                                         '$entry_plugin_data',
 660                                                         '$entry_author')");
 661
 662                                         $article_labels = array();
 663
 664                                 } else {
 665                                         // we keep encountering the entry in feeds, so we need to
 666                                         // update date_updated column so that we don't get horrible
 667                                         // dupes when the entry gets purged and reinserted again e.g.
 668                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 669
 670                                         $base_entry_id = db_fetch_result($result, 0, "id");
 671
 672                                         db_query($link, "UPDATE ttrss_entries SET date_updated = NOW()
 673                                                 WHERE id = '$base_entry_id'");
 674
 675                                         $article_labels = get_article_labels($link, $base_entry_id, $owner_uid);
 676                                 }
 677
 678                                 // now it should exist, if not - bad luck then
 679
 680                                 $result = db_query($link, "SELECT
 681                                                 id,content_hash,no_orig_date,title,plugin_data,
 682                                                 ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
 683                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
 684                                                 num_comments
 685                                         FROM
 686                                                 ttrss_entries
 687                                         WHERE guid = '$entry_guid'");
 688
 689                                 $entry_ref_id = 0;
 690                                 $entry_int_id = 0;
 691
 692                                 if (db_num_rows($result) == 1) {
 693
 694                                         if ($debug_enabled) {
 695                                                 _debug("update_rss_feed: base guid [$entry_guid] found, checking for user record");
 696                                         }
 697
 698                                         // this will be used below in update handler
 699                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 700                                         $orig_title = db_fetch_result($result, 0, "title");
 701                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 702                                         $orig_date_updated = strtotime(db_fetch_result($result,
 703                                                 0, "date_updated"));
 704                                         $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
 705
 706                                         $ref_id = db_fetch_result($result, 0, "id");
 707                                         $entry_ref_id = $ref_id;
 708
 709                                         // check for user post link to main table
 710
 711                                         // do we allow duplicate posts with same GUID in different feeds?
 712                                         if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 713                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 714                                         } else {
 715                                                 $dupcheck_qpart = "";
 716                                         }
 717
 718                                         /* Collect article tags here so we could filter by them: */
 719
 720                                         $article_filters = get_article_filters($filters, $entry_title,
 721                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 722                                                 $entry_tags);
 723
 724                                         if ($debug_enabled) {
 725                                                 _debug("update_rss_feed: article filters: ");
 726                                                 if (count($article_filters) != 0) {
 727                                                         print_r($article_filters);
 728                                                 }
 729                                         }
 730
 731                                         if (find_article_filter($article_filters, "filter")) {
 732                                                 db_query($link, "COMMIT"); // close transaction in progress
 733                                                 continue;
 734                                         }
 735
 736                                         $score = calculate_article_score($article_filters);
 737
 738                                         if ($debug_enabled) {
 739                                                 _debug("update_rss_feed: initial score: $score");
 740                                         }
 741
 742                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 743                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 744                                                         $dupcheck_qpart";
 745
 746 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 747
 748                                         $result = db_query($link, $query);
 749
 750                                         // okay it doesn't exist - create user entry
 751                                         if (db_num_rows($result) == 0) {
 752
 753                                                 if ($debug_enabled) {
 754                                                         _debug("update_rss_feed: user record not found, creating...");
 755                                                 }
 756
 757                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
 758                                                         $unread = 'true';
 759                                                         $last_read_qpart = 'NULL';
 760                                                 } else {
 761                                                         $unread = 'false';
 762                                                         $last_read_qpart = 'NOW()';
 763                                                 }
 764
 765                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 766                                                         $marked = 'true';
 767                                                 } else {
 768                                                         $marked = 'false';
 769                                                 }
 770
 771                                                 if (find_article_filter($article_filters, 'publish')) {
 772                                                         $published = 'true';
 773                                                 } else {
 774                                                         $published = 'false';
 775                                                 }
 776
 777                                                 // N-grams
 778
 779                                                 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 780
 781                                                         $result = db_query($link, "SELECT COUNT(*) AS similar FROM
 782                                                                         ttrss_entries,ttrss_user_entries
 783                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 784                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 785                                                                         AND owner_uid = $owner_uid");
 786
 787                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 788
 789                                                         if ($debug_enabled) {
 790                                                                 _debug("update_rss_feed: N-gram similar results: $ngram_similar");
 791                                                         }
 792
 793                                                         if ($ngram_similar > 0) {
 794                                                                 $unread = 'false';
 795                                                         }
 796                                                 }
 797
 798                                                 $result = db_query($link,
 799                                                         "INSERT INTO ttrss_user_entries
 800                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 801                                                                         published, score, tag_cache, label_cache, uuid)
 802                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 803                                                                 $last_read_qpart, $marked, $published, '$score', '', '', '')");
 804
 805                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 806                                                         $rss_link = get_self_url_prefix() .
 807                                                                 "/public.php?op=rss&id=-2&key=" .
 808                                                                 get_feed_access_key($link, -2, false, $owner_uid);
 809
 810                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
 811
 812                                                         $pubsub_result = $p->publish_update($rss_link);
 813                                                 }
 814
 815                                                 $result = db_query($link,
 816                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 817                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 818                                                                 feed_id = '$feed' LIMIT 1");
 819
 820                                                 if (db_num_rows($result) == 1) {
 821                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 822                                                 }
 823                                         } else {
 824                                                 if ($debug_enabled) {
 825                                                         _debug("update_rss_feed: user record FOUND");
 826                                                 }
 827
 828                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 829                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 830                                         }
 831
 832                                         if ($debug_enabled) {
 833                                                 _debug("update_rss_feed: RID: $entry_ref_id, IID: $entry_int_id");
 834                                         }
 835
 836                                         $post_needs_update = false;
 837                                         $update_insignificant = false;
 838
 839                                         if ($orig_num_comments != $num_comments) {
 840                                                 $post_needs_update = true;
 841                                                 $update_insignificant = true;
 842                                         }
 843
 844                                         if ($entry_plugin_data != $orig_plugin_data) {
 845                                                 $post_needs_update = true;
 846                                                 $update_insignificant = true;
 847                                         }
 848
 849                                         if ($content_hash != $orig_content_hash) {
 850                                                 $post_needs_update = true;
 851                                                 $update_insignificant = false;
 852                                         }
 853
 854                                         if (db_escape_string($orig_title) != $entry_title) {
 855                                                 $post_needs_update = true;
 856                                                 $update_insignificant = false;
 857                                         }
 858
 859                                         // if post needs update, update it and mark all user entries
 860                                         // linking to this post as updated
 861                                         if ($post_needs_update) {
 862
 863                                                 if (defined('DAEMON_EXTENDED_DEBUG')) {
 864                                                         _debug("update_rss_feed: post $entry_guid needs update...");
 865                                                 }
 866
 867 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 868
 869                                                 db_query($link, "UPDATE ttrss_entries
 870                                                         SET title = '$entry_title', content = '$entry_content',
 871                                                                 content_hash = '$content_hash',
 872                                                                 updated = '$entry_timestamp_fmt',
 873                                                                 num_comments = '$num_comments',
 874                                                                 plugin_data = '$entry_plugin_data'
 875                                                         WHERE id = '$ref_id'");
 876
 877                                                 if (!$update_insignificant) {
 878                                                         if ($mark_unread_on_update) {
 879                                                                 db_query($link, "UPDATE ttrss_user_entries
 880                                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
 881                                                         }
 882                                                 }
 883                                         }
 884                                 }
 885
 886                                 db_query($link, "COMMIT");
 887
 888                                 if ($debug_enabled) {
 889                                         _debug("update_rss_feed: assigning labels...");
 890                                 }
 891
 892                                 assign_article_to_label_filters($link, $entry_ref_id, $article_filters,
 893                                         $owner_uid, $article_labels);
 894
 895                                 if ($debug_enabled) {
 896                                         _debug("update_rss_feed: looking for enclosures...");
 897                                 }
 898
 899                                 // enclosures
 900
 901                                 $enclosures = array();
 902
 903                                 $encs = $item->get_enclosures();
 904
 905                                 if (is_array($encs)) {
 906                                         foreach ($encs as $e) {
 907                                                 $e_item = array(
 908                                                         $e->link, $e->type, $e->length);
 909                                                 array_push($enclosures, $e_item);
 910                                         }
 911                                 }
 912
 913                                 if ($debug_enabled) {
 914                                         _debug("update_rss_feed: article enclosures:");
 915                                         print_r($enclosures);
 916                                 }
 917
 918                                 db_query($link, "BEGIN");
 919
 920                                 foreach ($enclosures as $enc) {
 921                                         $enc_url = db_escape_string($enc[0]);
 922                                         $enc_type = db_escape_string($enc[1]);
 923                                         $enc_dur = db_escape_string($enc[2]);
 924
 925                                         $result = db_query($link, "SELECT id FROM ttrss_enclosures
 926                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
 927
 928                                         if (db_num_rows($result) == 0) {
 929                                                 db_query($link, "INSERT INTO ttrss_enclosures
 930                                                         (content_url, content_type, title, duration, post_id) VALUES
 931                                                         ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
 932                                         }
 933                                 }
 934
 935                                 db_query($link, "COMMIT");
 936
 937                                 // check for manual tags (we have to do it here since they're loaded from filters)
 938
 939                                 foreach ($article_filters as $f) {
 940                                         if ($f["type"] == "tag") {
 941
 942                                                 $manual_tags = trim_array(explode(",", $f["param"]));
 943
 944                                                 foreach ($manual_tags as $tag) {
 945                                                         if (tag_is_valid($tag)) {
 946                                                                 array_push($entry_tags, $tag);
 947                                                         }
 948                                                 }
 949                                         }
 950                                 }
 951
 952                                 // Skip boring tags
 953
 954                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref($link,
 955                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
 956
 957                                 $filtered_tags = array();
 958                                 $tags_to_cache = array();
 959
 960                                 if ($entry_tags && is_array($entry_tags)) {
 961                                         foreach ($entry_tags as $tag) {
 962                                                 if (array_search($tag, $boring_tags) === false) {
 963                                                         array_push($filtered_tags, $tag);
 964                                                 }
 965                                         }
 966                                 }
 967
 968                                 $filtered_tags = array_unique($filtered_tags);
 969
 970                                 if ($debug_enabled) {
 971                                         _debug("update_rss_feed: filtered article tags:");
 972                                         print_r($filtered_tags);
 973                                 }
 974
 975                                 // Save article tags in the database
 976
 977                                 if (count($filtered_tags) > 0) {
 978
 979                                         db_query($link, "BEGIN");
 980
 981                                         foreach ($filtered_tags as $tag) {
 982
 983                                                 $tag = sanitize_tag($tag);
 984                                                 $tag = db_escape_string($tag);
 985
 986                                                 if (!tag_is_valid($tag)) continue;
 987
 988                                                 $result = db_query($link, "SELECT id FROM ttrss_tags
 989                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
 990                                                         owner_uid = '$owner_uid' LIMIT 1");
 991
 992                                                         if ($result && db_num_rows($result) == 0) {
 993
 994                                                                 db_query($link, "INSERT INTO ttrss_tags
 995                                                                         (owner_uid,tag_name,post_int_id)
 996                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
 997                                                         }
 998
 999                                                 array_push($tags_to_cache, $tag);
1000                                         }
1001
1002                                         /* update the cache */
1003
1004                                         $tags_to_cache = array_unique($tags_to_cache);
1005
1006                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1007
1008                                         db_query($link, "UPDATE ttrss_user_entries
1009                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1010                                                 AND owner_uid = $owner_uid");
1011
1012                                         db_query($link, "COMMIT");
1013                                 }
1014
1015                                 if (get_pref($link, "AUTO_ASSIGN_LABELS", $owner_uid, false)) {
1016                                         if ($debug_enabled) {
1017                                                 _debug("update_rss_feed: auto-assigning labels...");
1018                                         }
1019
1020                                         foreach ($labels as $label) {
1021                                                 $caption = $label["caption"];
1022
1023                                                 if (preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
1024                                                         if (!labels_contains_caption($article_labels, $caption)) {
1025                                                                 label_add_article($link, $entry_ref_id, $caption, $owner_uid);
1026                                                         }
1027                                                 }
1028                                         }
1029                                 }
1030
1031                                 if ($debug_enabled) {
1032                                         _debug("update_rss_feed: article processed");
1033                                 }
1034                         }
1035
1036                         if (!$last_updated) {
1037                                 if ($debug_enabled) {
1038                                         _debug("update_rss_feed: new feed, catching it up...");
1039                                 }
1040                                 catchup_feed($link, $feed, false, $owner_uid);
1041                         }
1042
1043                         if ($debug_enabled) {
1044                                 _debug("purging feed...");
1045                         }
1046
1047                         purge_feed($link, $feed, 0, $debug_enabled);
1048
1049                         db_query($link, "UPDATE ttrss_feeds
1050                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1051
1052 //                      db_query($link, "COMMIT");
1053
1054                 } else {
1055
1056                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1057
1058                         if ($debug_enabled) {
1059                                 _debug("update_rss_feed: error fetching feed: $error_msg");
1060                         }
1061
1062                         db_query($link,
1063                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1064                                         last_updated = NOW() WHERE id = '$feed'");
1065                 }
1066
1067                 unset($rss);
1068
1069                 if ($debug_enabled) {
1070                         _debug("update_rss_feed: done");
1071                 }
1072
1073         }
1074
1075         function cache_images($html, $site_url, $debug) {
1076                 $cache_dir = CACHE_DIR . "/images";
1077
1078                 libxml_use_internal_errors(true);
1079
1080                 $charset_hack = '<head>
1081                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1082                 </head>';
1083
1084                 $doc = new DOMDocument();
1085                 $doc->loadHTML($charset_hack . $html);
1086                 $xpath = new DOMXPath($doc);
1087
1088                 $entries = $xpath->query('(//img[@src])');
1089
1090                 foreach ($entries as $entry) {
1091                         if ($entry->hasAttribute('src')) {
1092                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1093
1094                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1095
1096                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1097
1098                                 if (!file_exists($local_filename)) {
1099                                         $file_content = fetch_file_contents($src);
1100
1101                                         if ($file_content && strlen($file_content) > 1024) {
1102                                                 file_put_contents($local_filename, $file_content);
1103                                         }
1104                                 }
1105
1106                                 if (file_exists($local_filename)) {
1107                                         $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1108                                                 base64_encode($src));
1109                                 }
1110                         }
1111                 }
1112
1113                 $node = $doc->getElementsByTagName('body')->item(0);
1114
1115                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
1116         }
1117
1118         function expire_lock_files($debug) {
1119                 if ($debug) _debug("Removing old lock files...");
1120
1121                 $num_deleted = 0;
1122
1123                 if (is_writable(LOCK_DIRECTORY)) {
1124                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1125
1126                         if ($files) {
1127                                 foreach ($files as $file) {
1128                                         if (!file_is_locked($file) && time() - filemtime($file) > 86400*2) {
1129                                                 unlink($file);
1130                                                 ++$num_deleted;
1131                                         }
1132                                 }
1133                         }
1134                 }
1135
1136                 if ($debug) _debug("Removed $num_deleted files.");
1137         }
1138
1139         function expire_cached_files($debug) {
1140                 foreach (array("simplepie", "images", "export") as $dir) {
1141                         $cache_dir = CACHE_DIR . "/$dir";
1142
1143                         if ($debug) _debug("Expiring $cache_dir");
1144
1145                         $num_deleted = 0;
1146
1147                         if (is_writable($cache_dir)) {
1148                                 $files = glob("$cache_dir/*");
1149
1150                                 if ($files) {
1151                                         foreach ($files as $file) {
1152                                                 if (time() - filemtime($file) > 86400*7) {
1153                                                         unlink($file);
1154
1155                                                         ++$num_deleted;
1156                                                 }
1157                                         }
1158                                 }
1159                         }
1160
1161                         if ($debug) _debug("Removed $num_deleted files.");
1162                 }
1163         }
1164
1165         /**
1166         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1167         * Returns the url query as associative array
1168         *
1169         * @param    string    query
1170         * @return    array    params
1171         */
1172         function convertUrlQuery($query) {
1173                 $queryParts = explode('&', $query);
1174
1175                 $params = array();
1176
1177                 foreach ($queryParts as $param) {
1178                         $item = explode('=', $param);
1179                         $params[$item[0]] = $item[1];
1180                 }
1181
1182                 return $params;
1183         }
1184
1185         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1186                 $matches = array();
1187
1188                 foreach ($filters as $filter) {
1189                         $match_any_rule = $filter["match_any_rule"];
1190                         $filter_match = false;
1191
1192                         foreach ($filter["rules"] as $rule) {
1193                                 $match = false;
1194                                 $reg_exp = $rule["reg_exp"];
1195
1196                                 if (!$reg_exp)
1197                                         continue;
1198
1199                                 switch ($rule["type"]) {
1200                                 case "title":
1201                                         $match = @preg_match("/$reg_exp/i", $title);
1202                                         break;
1203                                 case "content":
1204                                         // we don't need to deal with multiline regexps
1205                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1206
1207                                         $match = @preg_match("/$reg_exp/i", $content);
1208                                         break;
1209                                 case "both":
1210                                         // we don't need to deal with multiline regexps
1211                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1212
1213                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1214                                         break;
1215                                 case "link":
1216                                         $match = @preg_match("/$reg_exp/i", $link);
1217                                         break;
1218                                 case "author":
1219                                         $match = @preg_match("/$reg_exp/i", $author);
1220                                         break;
1221                                 case "tag":
1222                                         $tag_string = join(",", $tags);
1223                                         $match = @preg_match("/$reg_exp/i", $tag_string);
1224                                         break;
1225                                 }
1226
1227                                 if ($match_any_rule) {
1228                                         if ($match) {
1229                                                 $filter_match = true;
1230                                                 break;
1231                                         }
1232                                 } else {
1233                                         $filter_match = $match;
1234                                         if (!$match) {
1235                                                 break;
1236                                         }
1237                                 }
1238                         }
1239
1240                         if ($filter_match) {
1241                                 foreach ($filter["actions"] AS $action) {
1242                                         array_push($matches, $action);
1243                                 }
1244                         }
1245                 }
1246
1247                 return $matches;
1248         }
1249
1250         function find_article_filter($filters, $filter_name) {
1251                 foreach ($filters as $f) {
1252                         if ($f["type"] == $filter_name) {
1253                                 return $f;
1254                         };
1255                 }
1256                 return false;
1257         }
1258
1259         function find_article_filters($filters, $filter_name) {
1260                 $results = array();
1261
1262                 foreach ($filters as $f) {
1263                         if ($f["type"] == $filter_name) {
1264                                 array_push($results, $f);
1265                         };
1266                 }
1267                 return $results;
1268         }
1269
1270         function calculate_article_score($filters) {
1271                 $score = 0;
1272
1273                 foreach ($filters as $f) {
1274                         if ($f["type"] == "score") {
1275                                 $score += $f["param"];
1276                         };
1277                 }
1278                 return $score;
1279         }
1280
1281         function labels_contains_caption($labels, $caption) {
1282                 foreach ($labels as $label) {
1283                         if ($label[1] == $caption) {
1284                                 return true;
1285                         }
1286                 }
1287
1288                 return false;
1289         }
1290
1291         function assign_article_to_label_filters($link, $id, $filters, $owner_uid, $article_labels) {
1292                 foreach ($filters as $f) {
1293                         if ($f["type"] == "label") {
1294                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1295                                         label_add_article($link, $id, $f["param"], $owner_uid);
1296                                 }
1297                         }
1298                 }
1299         }
1300
1301         function cache_content($link, $url, $login, $pass) {
1302
1303                 $content = fetch_file_contents($url, $login, $pass);
1304
1305                 if ($content) {
1306                         $doc = new DOMDocument();
1307                         @$doc->loadHTML($content);
1308                         $xpath = new DOMXPath($doc);
1309
1310                         $node = $doc->getElementsByTagName('body')->item(0);
1311
1312                         if ($node) {
1313                                 $content = $doc->saveXML($node, LIBXML_NOEMPTYTAG);
1314
1315                                 return $content;
1316                         }
1317                 }
1318
1319                 return "";
1320         }
1321
1322         function make_guid_from_title($title) {
1323                 return preg_replace("/[ \"\',.:;]/", "-",
1324                         mb_strtolower(strip_tags($title), 'utf-8'));
1325         }
1326
1327
1328 ?>