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                         $subscribers = db_escape_string($link, $line["subscribers"]);
  22                         $feed_url = db_escape_string($link, $line["feed_url"]);
  23                         $title = db_escape_string($link, $line["title"]);
  24                         $site_url = db_escape_string($link, $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 DISTINCT ttrss_feeds.feed_url,$random_qpart
 112                         FROM
 113                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 114                         WHERE
 115                                 ttrss_feeds.owner_uid = ttrss_users.id
 116                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 117                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 118                                 $login_thresh_qpart $update_limit_qpart
 119                                 $updstart_thresh_qpart
 120                         ORDER BY $random_qpart $query_limit");
 121
 122                 $user_prefs_cache = array();
 123
 124                 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 125
 126                 // Here is a little cache magic in order to minimize risk of double feed updates.
 127                 $feeds_to_update = array();
 128                 while ($line = db_fetch_assoc($result)) {
 129                         array_push($feeds_to_update, db_escape_string($link, $line['feed_url']));
 130                 }
 131
 132                 // We update the feed last update started date before anything else.
 133                 // There is no lag due to feed contents downloads
 134                 // It prevent an other process to update the same feed.
 135
 136                 if(count($feeds_to_update) > 0) {
 137                         $feeds_quoted = array();
 138
 139                         foreach ($feeds_to_update as $feed) {
 140                                 array_push($feeds_quoted, "'" . db_escape_string($link, $feed) . "'");
 141                         }
 142
 143                         db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 144                                 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
 145                 }
 146
 147                 expire_cached_files($debug);
 148                 expire_lock_files($debug);
 149
 150                 $nf = 0;
 151
 152                 // For each feed, we call the feed update function.
 153                 foreach ($feeds_to_update as $feed) {
 154                         if($debug) _debug("Base feed: $feed");
 155
 156                         //update_rss_feed($link, $line["id"], true);
 157
 158                         // since we have the data cached, we can deal with other feeds with the same url
 159
 160                         $tmp_result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id,last_updated
 161                         FROM ttrss_feeds, ttrss_users WHERE
 162                                 ttrss_users.id = ttrss_feeds.owner_uid AND
 163                                 feed_url = '".db_escape_string($link, $feed)."' AND
 164                                 ttrss_feeds.update_interval != -1
 165                                 $login_thresh_qpart
 166                         ORDER BY feed_url $query_limit");
 167
 168                         if (db_num_rows($tmp_result) > 0) {
 169                                 while ($tline = db_fetch_assoc($tmp_result)) {
 170                                         if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"]);
 171                                         update_rss_feed($link, $tline["id"], true);
 172                                         ++$nf;
 173                                 }
 174                         }
 175                 }
 176
 177                 require_once "digest.php";
 178
 179                 // Send feed digests by email if needed.
 180                 send_headlines_digests($link, $debug);
 181
 182                 return $nf;
 183
 184         } // function update_daemon_common
 185
 186         // ignore_daemon is not used
 187         function update_rss_feed($link, $feed, $ignore_daemon = false, $no_cache = false,
 188                 $override_url = false) {
 189
 190                 require_once "lib/simplepie/simplepie.inc";
 191
 192                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 193
 194                 if ($debug_enabled) {
 195                         _debug("update_rss_feed: start");
 196                 }
 197
 198                 $result = db_query($link, "SELECT id,update_interval,auth_login,
 199                         feed_url,auth_pass,cache_images,last_updated,
 200                         mark_unread_on_update, owner_uid,
 201                         pubsub_state
 202                         FROM ttrss_feeds WHERE id = '$feed'");
 203
 204                 if (db_num_rows($result) == 0) {
 205                         if ($debug_enabled) {
 206                                 _debug("update_rss_feed: feed $feed NOT FOUND/SKIPPED");
 207                         }
 208                         return false;
 209                 }
 210
 211                 $last_updated = db_fetch_result($result, 0, "last_updated");
 212                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 213                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 214                         0, "mark_unread_on_update"));
 215                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 216
 217                 db_query($link, "UPDATE ttrss_feeds SET last_update_started = NOW()
 218                         WHERE id = '$feed'");
 219
 220                 $auth_login = db_fetch_result($result, 0, "auth_login");
 221                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 222
 223                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 224                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 225
 226                 $feed = db_escape_string($link, $feed);
 227
 228                 if ($override_url) $fetch_url = $override_url;
 229
 230                 $date_feed_processed = date('Y-m-d H:i');
 231
 232                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".feed";
 233
 234                 // Ignore cache if new feed or manual update.
 235                 $cache_age = ($no_cache || is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
 236                         30 : get_feed_update_interval($link, $feed) * 60;
 237
 238                 if ($debug_enabled) {
 239                         _debug("update_rss_feed: cache filename: $cache_filename exists: " . file_exists($cache_filename));
 240                         _debug("update_rss_feed: cache age: $cache_age; no cache: $no_cache");
 241                 }
 242
 243                 $cached_feed_data_hash = false;
 244
 245                 $rss = false;
 246                 $rss_hash = false;
 247                 $cache_timestamp = file_exists($cache_filename) ? filemtime($cache_filename) : 0;
 248                 $last_updated_timestamp = strtotime($last_updated);
 249
 250                 if (file_exists($cache_filename) &&
 251                         is_readable($cache_filename) &&
 252                         !$auth_login && !$auth_pass &&
 253                         filemtime($cache_filename) > time() - $cache_age) {
 254
 255                                 if ($debug_enabled) {
 256                                         _debug("update_rss_feed: using local cache.");
 257                                 }
 258
 259                                 if ($cache_timestamp > $last_updated_timestamp) {
 260                                         @$rss_data = file_get_contents($cache_filename);
 261
 262                                         if ($rss_data) {
 263                                                 $rss_hash = sha1($rss_data);
 264                                                 @$rss = unserialize($rss_data);
 265                                         }
 266                                 } else {
 267                                         if ($debug_enabled) {
 268                                                 _debug("update_rss_feed: local cache valid and older than last_updated, nothing to do.");
 269                                         }
 270                                         return;
 271                                 }
 272                 }
 273
 274                 if (!$rss) {
 275
 276                         if (!$feed_data) {
 277                                 if ($debug_enabled) {
 278                                         _debug("update_rss_feed: fetching [$fetch_url] (ts: $cache_timestamp/$last_updated_timestamp)");
 279                                 }
 280
 281                                 $feed_data = fetch_file_contents($fetch_url, false,
 282                                         $auth_login, $auth_pass, false, $no_cache ? 15 : 45,
 283                                         max($last_updated_timestamp, $cache_timestamp));
 284
 285                                 if ($debug_enabled) {
 286                                         _debug("update_rss_feed: fetch done.");
 287                                 }
 288
 289                         }
 290
 291                         if (!$feed_data) {
 292                                 global $fetch_last_error;
 293                                 global $fetch_last_error_code;
 294
 295                                 if ($debug_enabled) {
 296                                         _debug("update_rss_feed: unable to fetch: $fetch_last_error [$fetch_last_error_code]");
 297                                 }
 298
 299                                 $error_escaped = '';
 300
 301                                 // If-Modified-Since
 302                                 if ($fetch_last_error_code != 304) {
 303                                         $error_escaped = db_escape_string($link, $fetch_last_error);
 304                                 } else {
 305                                         if ($debug_enabled) {
 306                                                 _debug("update_rss_feed: source claims data not modified, nothing to do.");
 307                                         }
 308                                 }
 309
 310                                 db_query($link,
 311                                         "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 312                                                 last_updated = NOW() WHERE id = '$feed'");
 313
 314                                 return;
 315                         }
 316                 }
 317
 318                 $pluginhost = new PluginHost($link);
 319                 $pluginhost->set_debug($debug_enabled);
 320                 $user_plugins = get_pref($link, "_ENABLED_PLUGINS", $owner_uid);
 321
 322                 $pluginhost->load(PLUGINS, $pluginhost::KIND_ALL);
 323                 $pluginhost->load($user_plugins, $pluginhost::KIND_USER, $owner_uid);
 324                 $pluginhost->load_data();
 325
 326                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_FEED_FETCHED) as $plugin) {
 327                         $feed_data = $plugin->hook_feed_fetched($feed_data);
 328                 }
 329
 330                 if (!$rss) {
 331                         $rss = new SimplePie();
 332                         $rss->set_sanitize_class("SanitizeDummy");
 333                         // simplepie ignores the above and creates default sanitizer anyway,
 334                         // so let's override it...
 335                         $rss->sanitize = new SanitizeDummy();
 336                         $rss->set_output_encoding('UTF-8');
 337                         $rss->set_raw_data($feed_data);
 338                         $rss->enable_cache(false);
 339
 340                         @$rss->init();
 341                 }
 342
 343 //              print_r($rss);
 344
 345                 $feed = db_escape_string($link, $feed);
 346
 347                 if (!$rss->error()) {
 348
 349                         // cache data for later
 350                         if (!$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 351                                 $rss_data = serialize($rss);
 352                                 $new_rss_hash = sha1($rss_data);
 353
 354                                 if ($new_rss_hash != $rss_hash) {
 355                                         if ($debug_enabled) {
 356                                                 _debug("update_rss_feed: saving $cache_filename");
 357                                         }
 358                                         @file_put_contents($cache_filename, serialize($rss));
 359                                 }
 360                         }
 361
 362                         // We use local pluginhost here because we need to load different per-user feed plugins
 363                         $pluginhost->run_hooks($pluginhost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 364
 365                         if ($debug_enabled) {
 366                                 _debug("update_rss_feed: processing feed data...");
 367                         }
 368
 369 //                      db_query($link, "BEGIN");
 370
 371                         if (DB_TYPE == "pgsql") {
 372                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 373                         } else {
 374                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 375                         }
 376
 377                         $result = db_query($link, "SELECT title,site_url,owner_uid,
 378                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 379                                                 favicon_needs_check
 380                                 FROM ttrss_feeds WHERE id = '$feed'");
 381
 382                         $registered_title = db_fetch_result($result, 0, "title");
 383                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 384                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 385                                 "favicon_needs_check"));
 386
 387                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 388
 389                         $site_url = db_escape_string($link, mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 390
 391                         if ($debug_enabled) {
 392                                 _debug("update_rss_feed: checking favicon...");
 393                         }
 394
 395                         if ($favicon_needs_check) {
 396                                 check_feed_favicon($site_url, $feed, $link);
 397
 398                                 db_query($link, "UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 399                                         WHERE id = '$feed'");
 400                         }
 401
 402                         if (!$registered_title || $registered_title == "[Unknown]") {
 403
 404                                 $feed_title = db_escape_string($link, $rss->get_title());
 405
 406                                 if ($debug_enabled) {
 407                                         _debug("update_rss_feed: registering title: $feed_title");
 408                                 }
 409
 410                                 db_query($link, "UPDATE ttrss_feeds SET
 411                                         title = '$feed_title' WHERE id = '$feed'");
 412                         }
 413
 414                         if ($site_url && $orig_site_url != $site_url) {
 415                                 db_query($link, "UPDATE ttrss_feeds SET
 416                                         site_url = '$site_url' WHERE id = '$feed'");
 417                         }
 418
 419                         if ($debug_enabled) {
 420                                 _debug("update_rss_feed: loading filters & labels...");
 421                         }
 422
 423                         $filters = load_filters($link, $feed, $owner_uid);
 424                         $labels = get_all_labels($link, $owner_uid);
 425
 426                         if ($debug_enabled) {
 427                                 //print_r($filters);
 428                                 _debug("update_rss_feed: " . count($filters) . " filters loaded.");
 429                         }
 430
 431                         $items = $rss->get_items();
 432
 433                         if (!is_array($items)) {
 434                                 if ($debug_enabled) {
 435                                         _debug("update_rss_feed: no articles found.");
 436                                 }
 437
 438                                 db_query($link, "UPDATE ttrss_feeds
 439                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 440
 441                                 return; // no articles
 442                         }
 443
 444                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 445
 446                                 if ($debug_enabled) _debug("update_rss_feed: checking for PUSH hub...");
 447
 448                                 $feed_hub_url = false;
 449
 450                                 $links = $rss->get_links('hub');
 451
 452                                 if ($links && is_array($links)) {
 453                                         foreach ($links as $l) {
 454                                                 $feed_hub_url = $l;
 455                                                 break;
 456                                         }
 457                                 }
 458
 459                                 if ($debug_enabled) _debug("update_rss_feed: feed hub url: $feed_hub_url");
 460
 461                                 if ($feed_hub_url && function_exists('curl_init') &&
 462                                         !ini_get("open_basedir")) {
 463
 464                                         require_once 'lib/pubsubhubbub/subscriber.php';
 465
 466                                         $callback_url = get_self_url_prefix() .
 467                                                 "/public.php?op=pubsub&id=$feed";
 468
 469                                         $s = new Subscriber($feed_hub_url, $callback_url);
 470
 471                                         $rc = $s->subscribe($fetch_url);
 472
 473                                         if ($debug_enabled)
 474                                                 _debug("update_rss_feed: feed hub url found, subscribe request sent.");
 475
 476                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 1
 477                                                 WHERE id = '$feed'");
 478                                 }
 479                         }
 480
 481                         if ($debug_enabled) {
 482                                 _debug("update_rss_feed: processing articles...");
 483                         }
 484
 485                         foreach ($items as $item) {
 486                                 if ($_REQUEST['xdebug'] == 3) {
 487                                         print_r($item);
 488                                 }
 489
 490                                 $entry_guid = $item->get_id();
 491                                 if (!$entry_guid) $entry_guid = $item->get_link();
 492                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 493
 494                                 if ($debug_enabled) {
 495                                         _debug("update_rss_feed: guid $entry_guid");
 496                                 }
 497
 498                                 if (!$entry_guid) continue;
 499
 500                                 $entry_guid = "$owner_uid,$entry_guid";
 501
 502                                 $entry_timestamp = "";
 503
 504                                 $entry_timestamp = strtotime($item->get_date());
 505
 506                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 507                                         $entry_timestamp = time();
 508                                         $no_orig_date = 'true';
 509                                 } else {
 510                                         $no_orig_date = 'false';
 511                                 }
 512
 513                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 514
 515                                 if ($debug_enabled) {
 516                                         _debug("update_rss_feed: date $entry_timestamp [$entry_timestamp_fmt]");
 517                                 }
 518
 519                                 $entry_title = $item->get_title();
 520
 521                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 522
 523                                 if ($debug_enabled) {
 524                                         _debug("update_rss_feed: title $entry_title");
 525                                         _debug("update_rss_feed: link $entry_link");
 526                                 }
 527
 528                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 529
 530                                 $entry_content = $item->get_content();
 531                                 if (!$entry_content) $entry_content = $item->get_description();
 532
 533                                 if ($_REQUEST["xdebug"] == 2) {
 534                                         print "update_rss_feed: content: ";
 535                                         print $entry_content;
 536                                         print "\n";
 537                                 }
 538
 539                                 $entry_comments = $item->data["comments"];
 540
 541                                 if ($item->get_author()) {
 542                                         $entry_author_item = $item->get_author();
 543                                         $entry_author = $entry_author_item->get_name();
 544                                         if (!$entry_author) $entry_author = $entry_author_item->get_email();
 545
 546                                         $entry_author = db_escape_string($link, $entry_author);
 547                                 }
 548
 549                                 $entry_guid = db_escape_string($link, mb_substr($entry_guid, 0, 245));
 550
 551                                 $entry_comments = db_escape_string($link, mb_substr($entry_comments, 0, 245));
 552                                 $entry_author = db_escape_string($link, mb_substr($entry_author, 0, 245));
 553
 554                                 $num_comments = $item->get_item_tags('http://purl.org/rss/1.0/modules/slash/', 'comments');
 555
 556                                 if (is_array($num_comments) && is_array($num_comments[0])) {
 557                                         $num_comments = (int) $num_comments[0]["data"];
 558                                 } else {
 559                                         $num_comments = 0;
 560                                 }
 561
 562                                 if ($debug_enabled) {
 563                                         _debug("update_rss_feed: num_comments: $num_comments");
 564                                         _debug("update_rss_feed: looking for tags [1]...");
 565                                 }
 566
 567                                 // parse <category> entries into tags
 568
 569                                 $additional_tags = array();
 570
 571                                 $additional_tags_src = $item->get_categories();
 572
 573                                 if (is_array($additional_tags_src)) {
 574                                         foreach ($additional_tags_src as $tobj) {
 575                                                 array_push($additional_tags, $tobj->get_term());
 576                                         }
 577                                 }
 578
 579                                 if ($debug_enabled) {
 580                                         _debug("update_rss_feed: category tags:");
 581                                         print_r($additional_tags);
 582                                 }
 583
 584                                 if ($debug_enabled) {
 585                                         _debug("update_rss_feed: looking for tags [2]...");
 586                                 }
 587
 588                                 $entry_tags = array_unique($additional_tags);
 589
 590                                 for ($i = 0; $i < count($entry_tags); $i++)
 591                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 592
 593                                 if ($debug_enabled) {
 594                                         //_debug("update_rss_feed: unfiltered tags found:");
 595                                         //print_r($entry_tags);
 596                                 }
 597
 598                                 if ($debug_enabled) {
 599                                         _debug("update_rss_feed: done collecting data.");
 600                                 }
 601
 602                                 // TODO: less memory-hungry implementation
 603
 604                                 if ($debug_enabled) {
 605                                         _debug("update_rss_feed: applying plugin filters..");
 606                                 }
 607
 608                                 // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
 609                                 $result = db_query($link, "SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
 610                                         WHERE ref_id = id AND guid = '".db_escape_string($link, $entry_guid)."' AND owner_uid = $owner_uid");
 611
 612                                 if (db_num_rows($result) != 0) {
 613                                         $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
 614                                         $stored_article = array("title" => db_fetch_result($result, 0, "title"),
 615                                                 "content" => db_fetch_result($result, 0, "content"),
 616                                                 "link" => db_fetch_result($result, 0, "link"),
 617                                                 "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
 618                                                 "author" => db_fetch_result($result, 0, "author"));
 619                                 } else {
 620                                         $entry_plugin_data = "";
 621                                         $stored_article = array();
 622                                 }
 623
 624                                 $article = array("owner_uid" => $owner_uid, // read only
 625                                         "guid" => $entry_guid, // read only
 626                                         "title" => $entry_title,
 627                                         "content" => $entry_content,
 628                                         "link" => $entry_link,
 629                                         "tags" => $entry_tags,
 630                                         "plugin_data" => $entry_plugin_data,
 631                                         "author" => $entry_author,
 632                                         "stored" => $stored_article);
 633
 634                                 foreach ($pluginhost->get_hooks($pluginhost::HOOK_ARTICLE_FILTER) as $plugin) {
 635                                         $article = $plugin->hook_article_filter($article);
 636                                 }
 637
 638                                 $entry_tags = $article["tags"];
 639                                 $entry_guid = db_escape_string($link, $entry_guid);
 640                                 $entry_title = db_escape_string($link, $article["title"]);
 641                                 $entry_author = db_escape_string($link, $article["author"]);
 642                                 $entry_link = db_escape_string($link, $article["link"]);
 643                                 $entry_plugin_data = db_escape_string($link, $article["plugin_data"]);
 644                                 $entry_content = $article["content"]; // escaped below
 645
 646
 647                                 if ($debug_enabled) {
 648                                         _debug("update_rss_feed: plugin data: $entry_plugin_data");
 649                                 }
 650
 651                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 652                                         cache_images($entry_content, $site_url, $debug_enabled);
 653
 654                                 $entry_content = db_escape_string($link, $entry_content, false);
 655
 656                                 $content_hash = "SHA1:" . sha1($entry_content);
 657
 658                                 db_query($link, "BEGIN");
 659
 660                                 $result = db_query($link, "SELECT id FROM       ttrss_entries
 661                                         WHERE guid = '$entry_guid'");
 662
 663                                 if (db_num_rows($result) == 0) {
 664
 665                                         if ($debug_enabled) {
 666                                                 _debug("update_rss_feed: base guid [$entry_guid] not found");
 667                                         }
 668
 669                                         // base post entry does not exist, create it
 670
 671                                         $result = db_query($link,
 672                                                 "INSERT INTO ttrss_entries
 673                                                         (title,
 674                                                         guid,
 675                                                         link,
 676                                                         updated,
 677                                                         content,
 678                                                         content_hash,
 679                                                         cached_content,
 680                                                         no_orig_date,
 681                                                         date_updated,
 682                                                         date_entered,
 683                                                         comments,
 684                                                         num_comments,
 685                                                         plugin_data,
 686                                                         author)
 687                                                 VALUES
 688                                                         ('$entry_title',
 689                                                         '$entry_guid',
 690                                                         '$entry_link',
 691                                                         '$entry_timestamp_fmt',
 692                                                         '$entry_content',
 693                                                         '$content_hash',
 694                                                         '',
 695                                                         $no_orig_date,
 696                                                         NOW(),
 697                                                         '$date_feed_processed',
 698                                                         '$entry_comments',
 699                                                         '$num_comments',
 700                                                         '$entry_plugin_data',
 701                                                         '$entry_author')");
 702
 703                                         $article_labels = array();
 704
 705                                 } else {
 706                                         // we keep encountering the entry in feeds, so we need to
 707                                         // update date_updated column so that we don't get horrible
 708                                         // dupes when the entry gets purged and reinserted again e.g.
 709                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 710
 711                                         $base_entry_id = db_fetch_result($result, 0, "id");
 712
 713                                         db_query($link, "UPDATE ttrss_entries SET date_updated = NOW()
 714                                                 WHERE id = '$base_entry_id'");
 715
 716                                         $article_labels = get_article_labels($link, $base_entry_id, $owner_uid);
 717                                 }
 718
 719                                 // now it should exist, if not - bad luck then
 720
 721                                 $result = db_query($link, "SELECT
 722                                                 id,content_hash,no_orig_date,title,plugin_data,
 723                                                 ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
 724                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
 725                                                 num_comments
 726                                         FROM
 727                                                 ttrss_entries
 728                                         WHERE guid = '$entry_guid'");
 729
 730                                 $entry_ref_id = 0;
 731                                 $entry_int_id = 0;
 732
 733                                 if (db_num_rows($result) == 1) {
 734
 735                                         if ($debug_enabled) {
 736                                                 _debug("update_rss_feed: base guid [$entry_guid] found, checking for user record");
 737                                         }
 738
 739                                         // this will be used below in update handler
 740                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 741                                         $orig_title = db_fetch_result($result, 0, "title");
 742                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 743                                         $orig_date_updated = strtotime(db_fetch_result($result,
 744                                                 0, "date_updated"));
 745                                         $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
 746
 747                                         $ref_id = db_fetch_result($result, 0, "id");
 748                                         $entry_ref_id = $ref_id;
 749
 750                                         // check for user post link to main table
 751
 752                                         // do we allow duplicate posts with same GUID in different feeds?
 753                                         if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 754                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 755                                         } else {
 756                                                 $dupcheck_qpart = "";
 757                                         }
 758
 759                                         /* Collect article tags here so we could filter by them: */
 760
 761                                         $article_filters = get_article_filters($filters, $entry_title,
 762                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 763                                                 $entry_tags);
 764
 765                                         if ($debug_enabled) {
 766                                                 _debug("update_rss_feed: article filters: ");
 767                                                 if (count($article_filters) != 0) {
 768                                                         print_r($article_filters);
 769                                                 }
 770                                         }
 771
 772                                         if (find_article_filter($article_filters, "filter")) {
 773                                                 db_query($link, "COMMIT"); // close transaction in progress
 774                                                 continue;
 775                                         }
 776
 777                                         $score = calculate_article_score($article_filters);
 778
 779                                         if ($debug_enabled) {
 780                                                 _debug("update_rss_feed: initial score: $score");
 781                                         }
 782
 783                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 784                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 785                                                         $dupcheck_qpart";
 786
 787 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 788
 789                                         $result = db_query($link, $query);
 790
 791                                         // okay it doesn't exist - create user entry
 792                                         if (db_num_rows($result) == 0) {
 793
 794                                                 if ($debug_enabled) {
 795                                                         _debug("update_rss_feed: user record not found, creating...");
 796                                                 }
 797
 798                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
 799                                                         $unread = 'true';
 800                                                         $last_read_qpart = 'NULL';
 801                                                 } else {
 802                                                         $unread = 'false';
 803                                                         $last_read_qpart = 'NOW()';
 804                                                 }
 805
 806                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 807                                                         $marked = 'true';
 808                                                 } else {
 809                                                         $marked = 'false';
 810                                                 }
 811
 812                                                 if (find_article_filter($article_filters, 'publish')) {
 813                                                         $published = 'true';
 814                                                 } else {
 815                                                         $published = 'false';
 816                                                 }
 817
 818                                                 // N-grams
 819
 820                                                 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 821
 822                                                         $result = db_query($link, "SELECT COUNT(*) AS similar FROM
 823                                                                         ttrss_entries,ttrss_user_entries
 824                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 825                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 826                                                                         AND owner_uid = $owner_uid");
 827
 828                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 829
 830                                                         if ($debug_enabled) {
 831                                                                 _debug("update_rss_feed: N-gram similar results: $ngram_similar");
 832                                                         }
 833
 834                                                         if ($ngram_similar > 0) {
 835                                                                 $unread = 'false';
 836                                                         }
 837                                                 }
 838
 839                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 840                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 841
 842                                                 $result = db_query($link,
 843                                                         "INSERT INTO ttrss_user_entries
 844                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 845                                                                 published, score, tag_cache, label_cache, uuid,
 846                                                                 last_marked, last_published)
 847                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 848                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 849                                                                 '', $last_marked, $last_published)");
 850
 851                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 852                                                         $rss_link = get_self_url_prefix() .
 853                                                                 "/public.php?op=rss&id=-2&key=" .
 854                                                                 get_feed_access_key($link, -2, false, $owner_uid);
 855
 856                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
 857
 858                                                         $pubsub_result = $p->publish_update($rss_link);
 859                                                 }
 860
 861                                                 $result = db_query($link,
 862                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 863                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 864                                                                 feed_id = '$feed' LIMIT 1");
 865
 866                                                 if (db_num_rows($result) == 1) {
 867                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 868                                                 }
 869                                         } else {
 870                                                 if ($debug_enabled) {
 871                                                         _debug("update_rss_feed: user record FOUND");
 872                                                 }
 873
 874                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 875                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 876                                         }
 877
 878                                         if ($debug_enabled) {
 879                                                 _debug("update_rss_feed: RID: $entry_ref_id, IID: $entry_int_id");
 880                                         }
 881
 882                                         $post_needs_update = false;
 883                                         $update_insignificant = false;
 884
 885                                         if ($orig_num_comments != $num_comments) {
 886                                                 $post_needs_update = true;
 887                                                 $update_insignificant = true;
 888                                         }
 889
 890                                         if ($entry_plugin_data != $orig_plugin_data) {
 891                                                 $post_needs_update = true;
 892                                                 $update_insignificant = true;
 893                                         }
 894
 895                                         if ($content_hash != $orig_content_hash) {
 896                                                 $post_needs_update = true;
 897                                                 $update_insignificant = false;
 898                                         }
 899
 900                                         if (db_escape_string($link, $orig_title) != $entry_title) {
 901                                                 $post_needs_update = true;
 902                                                 $update_insignificant = false;
 903                                         }
 904
 905                                         // if post needs update, update it and mark all user entries
 906                                         // linking to this post as updated
 907                                         if ($post_needs_update) {
 908
 909                                                 if (defined('DAEMON_EXTENDED_DEBUG')) {
 910                                                         _debug("update_rss_feed: post $entry_guid needs update...");
 911                                                 }
 912
 913 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 914
 915                                                 db_query($link, "UPDATE ttrss_entries
 916                                                         SET title = '$entry_title', content = '$entry_content',
 917                                                                 content_hash = '$content_hash',
 918                                                                 updated = '$entry_timestamp_fmt',
 919                                                                 num_comments = '$num_comments',
 920                                                                 plugin_data = '$entry_plugin_data'
 921                                                         WHERE id = '$ref_id'");
 922
 923                                                 if (!$update_insignificant) {
 924                                                         if ($mark_unread_on_update) {
 925                                                                 db_query($link, "UPDATE ttrss_user_entries
 926                                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
 927                                                         }
 928                                                 }
 929                                         }
 930                                 }
 931
 932                                 db_query($link, "COMMIT");
 933
 934                                 if ($debug_enabled) {
 935                                         _debug("update_rss_feed: assigning labels...");
 936                                 }
 937
 938                                 assign_article_to_label_filters($link, $entry_ref_id, $article_filters,
 939                                         $owner_uid, $article_labels);
 940
 941                                 if ($debug_enabled) {
 942                                         _debug("update_rss_feed: looking for enclosures...");
 943                                 }
 944
 945                                 // enclosures
 946
 947                                 $enclosures = array();
 948
 949                                 $encs = $item->get_enclosures();
 950
 951                                 if (is_array($encs)) {
 952                                         foreach ($encs as $e) {
 953                                                 $e_item = array(
 954                                                         $e->link, $e->type, $e->length);
 955                                                 array_push($enclosures, $e_item);
 956                                         }
 957                                 }
 958
 959                                 if ($debug_enabled) {
 960                                         _debug("update_rss_feed: article enclosures:");
 961                                         print_r($enclosures);
 962                                 }
 963
 964                                 db_query($link, "BEGIN");
 965
 966                                 foreach ($enclosures as $enc) {
 967                                         $enc_url = db_escape_string($link, $enc[0]);
 968                                         $enc_type = db_escape_string($link, $enc[1]);
 969                                         $enc_dur = db_escape_string($link, $enc[2]);
 970
 971                                         $result = db_query($link, "SELECT id FROM ttrss_enclosures
 972                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
 973
 974                                         if (db_num_rows($result) == 0) {
 975                                                 db_query($link, "INSERT INTO ttrss_enclosures
 976                                                         (content_url, content_type, title, duration, post_id) VALUES
 977                                                         ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
 978                                         }
 979                                 }
 980
 981                                 db_query($link, "COMMIT");
 982
 983                                 // check for manual tags (we have to do it here since they're loaded from filters)
 984
 985                                 foreach ($article_filters as $f) {
 986                                         if ($f["type"] == "tag") {
 987
 988                                                 $manual_tags = trim_array(explode(",", $f["param"]));
 989
 990                                                 foreach ($manual_tags as $tag) {
 991                                                         if (tag_is_valid($tag)) {
 992                                                                 array_push($entry_tags, $tag);
 993                                                         }
 994                                                 }
 995                                         }
 996                                 }
 997
 998                                 // Skip boring tags
 999
1000                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref($link,
1001                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1002
1003                                 $filtered_tags = array();
1004                                 $tags_to_cache = array();
1005
1006                                 if ($entry_tags && is_array($entry_tags)) {
1007                                         foreach ($entry_tags as $tag) {
1008                                                 if (array_search($tag, $boring_tags) === false) {
1009                                                         array_push($filtered_tags, $tag);
1010                                                 }
1011                                         }
1012                                 }
1013
1014                                 $filtered_tags = array_unique($filtered_tags);
1015
1016                                 if ($debug_enabled) {
1017                                         _debug("update_rss_feed: filtered article tags:");
1018                                         print_r($filtered_tags);
1019                                 }
1020
1021                                 // Save article tags in the database
1022
1023                                 if (count($filtered_tags) > 0) {
1024
1025                                         db_query($link, "BEGIN");
1026
1027                                         foreach ($filtered_tags as $tag) {
1028
1029                                                 $tag = sanitize_tag($tag);
1030                                                 $tag = db_escape_string($link, $tag);
1031
1032                                                 if (!tag_is_valid($tag)) continue;
1033
1034                                                 $result = db_query($link, "SELECT id FROM ttrss_tags
1035                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1036                                                         owner_uid = '$owner_uid' LIMIT 1");
1037
1038                                                         if ($result && db_num_rows($result) == 0) {
1039
1040                                                                 db_query($link, "INSERT INTO ttrss_tags
1041                                                                         (owner_uid,tag_name,post_int_id)
1042                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1043                                                         }
1044
1045                                                 array_push($tags_to_cache, $tag);
1046                                         }
1047
1048                                         /* update the cache */
1049
1050                                         $tags_to_cache = array_unique($tags_to_cache);
1051
1052                                         $tags_str = db_escape_string($link, join(",", $tags_to_cache));
1053
1054                                         db_query($link, "UPDATE ttrss_user_entries
1055                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1056                                                 AND owner_uid = $owner_uid");
1057
1058                                         db_query($link, "COMMIT");
1059                                 }
1060
1061                                 if (get_pref($link, "AUTO_ASSIGN_LABELS", $owner_uid, false)) {
1062                                         if ($debug_enabled) {
1063                                                 _debug("update_rss_feed: auto-assigning labels...");
1064                                         }
1065
1066                                         foreach ($labels as $label) {
1067                                                 $caption = preg_quote($label["caption"]);
1068
1069                                                 if ($caption && preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
1070                                                         if (!labels_contains_caption($article_labels, $caption)) {
1071                                                                 label_add_article($link, $entry_ref_id, $caption, $owner_uid);
1072                                                         }
1073                                                 }
1074                                         }
1075                                 }
1076
1077                                 if ($debug_enabled) {
1078                                         _debug("update_rss_feed: article processed");
1079                                 }
1080                         }
1081
1082                         if (!$last_updated) {
1083                                 if ($debug_enabled) {
1084                                         _debug("update_rss_feed: new feed, catching it up...");
1085                                 }
1086                                 catchup_feed($link, $feed, false, $owner_uid);
1087                         }
1088
1089                         if ($debug_enabled) {
1090                                 _debug("purging feed...");
1091                         }
1092
1093                         purge_feed($link, $feed, 0, $debug_enabled);
1094
1095                         db_query($link, "UPDATE ttrss_feeds
1096                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1097
1098 //                      db_query($link, "COMMIT");
1099
1100                 } else {
1101
1102                         $error_msg = db_escape_string($link, mb_substr($rss->error(), 0, 245));
1103
1104                         if ($debug_enabled) {
1105                                 _debug("update_rss_feed: error fetching feed: $error_msg");
1106                         }
1107
1108                         db_query($link,
1109                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1110                                         last_updated = NOW() WHERE id = '$feed'");
1111                 }
1112
1113                 unset($rss);
1114
1115                 if ($debug_enabled) {
1116                         _debug("update_rss_feed: done");
1117                 }
1118
1119         }
1120
1121         function cache_images($html, $site_url, $debug) {
1122                 $cache_dir = CACHE_DIR . "/images";
1123
1124                 libxml_use_internal_errors(true);
1125
1126                 $charset_hack = '<head>
1127                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1128                 </head>';
1129
1130                 $doc = new DOMDocument();
1131                 $doc->loadHTML($charset_hack . $html);
1132                 $xpath = new DOMXPath($doc);
1133
1134                 $entries = $xpath->query('(//img[@src])');
1135
1136                 foreach ($entries as $entry) {
1137                         if ($entry->hasAttribute('src')) {
1138                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1139
1140                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1141
1142                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1143
1144                                 if (!file_exists($local_filename)) {
1145                                         $file_content = fetch_file_contents($src);
1146
1147                                         if ($file_content && strlen($file_content) > 1024) {
1148                                                 file_put_contents($local_filename, $file_content);
1149                                         }
1150                                 }
1151
1152                                 if (file_exists($local_filename)) {
1153                                         $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1154                                                 base64_encode($src));
1155                                 }
1156                         }
1157                 }
1158
1159                 $node = $doc->getElementsByTagName('body')->item(0);
1160
1161                 return $doc->saveXML($node);
1162         }
1163
1164         function expire_lock_files($debug) {
1165                 if ($debug) _debug("Removing old lock files...");
1166
1167                 $num_deleted = 0;
1168
1169                 if (is_writable(LOCK_DIRECTORY)) {
1170                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1171
1172                         if ($files) {
1173                                 foreach ($files as $file) {
1174                                         if (!file_is_locked($file) && time() - filemtime($file) > 86400*2) {
1175                                                 unlink($file);
1176                                                 ++$num_deleted;
1177                                         }
1178                                 }
1179                         }
1180                 }
1181
1182                 if ($debug) _debug("Removed $num_deleted files.");
1183         }
1184
1185         function expire_cached_files($debug) {
1186                 foreach (array("simplepie", "images", "export") as $dir) {
1187                         $cache_dir = CACHE_DIR . "/$dir";
1188
1189                         if ($debug) _debug("Expiring $cache_dir");
1190
1191                         $num_deleted = 0;
1192
1193                         if (is_writable($cache_dir)) {
1194                                 $files = glob("$cache_dir/*");
1195
1196                                 if ($files) {
1197                                         foreach ($files as $file) {
1198                                                 if (time() - filemtime($file) > 86400*7) {
1199                                                         unlink($file);
1200
1201                                                         ++$num_deleted;
1202                                                 }
1203                                         }
1204                                 }
1205                         }
1206
1207                         if ($debug) _debug("Removed $num_deleted files.");
1208                 }
1209         }
1210
1211         /**
1212         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1213         * Returns the url query as associative array
1214         *
1215         * @param    string    query
1216         * @return    array    params
1217         */
1218         function convertUrlQuery($query) {
1219                 $queryParts = explode('&', $query);
1220
1221                 $params = array();
1222
1223                 foreach ($queryParts as $param) {
1224                         $item = explode('=', $param);
1225                         $params[$item[0]] = $item[1];
1226                 }
1227
1228                 return $params;
1229         }
1230
1231         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1232                 $matches = array();
1233
1234                 foreach ($filters as $filter) {
1235                         $match_any_rule = $filter["match_any_rule"];
1236                         $inverse = $filter["inverse"];
1237                         $filter_match = false;
1238
1239                         foreach ($filter["rules"] as $rule) {
1240                                 $match = false;
1241                                 $reg_exp = $rule["reg_exp"];
1242                                 $rule_inverse = $rule["inverse"];
1243
1244                                 if (!$reg_exp)
1245                                         continue;
1246
1247                                 switch ($rule["type"]) {
1248                                 case "title":
1249                                         $match = @preg_match("/$reg_exp/i", $title);
1250                                         break;
1251                                 case "content":
1252                                         // we don't need to deal with multiline regexps
1253                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1254
1255                                         $match = @preg_match("/$reg_exp/i", $content);
1256                                         break;
1257                                 case "both":
1258                                         // we don't need to deal with multiline regexps
1259                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1260
1261                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1262                                         break;
1263                                 case "link":
1264                                         $match = @preg_match("/$reg_exp/i", $link);
1265                                         break;
1266                                 case "author":
1267                                         $match = @preg_match("/$reg_exp/i", $author);
1268                                         break;
1269                                 case "tag":
1270                                         $tag_string = join(",", $tags);
1271                                         $match = @preg_match("/$reg_exp/i", $tag_string);
1272                                         break;
1273                                 }
1274
1275                                 if ($rule_inverse) $match = !$match;
1276
1277                                 if ($match_any_rule) {
1278                                         if ($match) {
1279                                                 $filter_match = true;
1280                                                 break;
1281                                         }
1282                                 } else {
1283                                         $filter_match = $match;
1284                                         if (!$match) {
1285                                                 break;
1286                                         }
1287                                 }
1288                         }
1289
1290                         if ($inverse) $filter_match = !$filter_match;
1291
1292                         if ($filter_match) {
1293                                 foreach ($filter["actions"] AS $action) {
1294                                         array_push($matches, $action);
1295                                 }
1296                         }
1297                 }
1298
1299                 return $matches;
1300         }
1301
1302         function find_article_filter($filters, $filter_name) {
1303                 foreach ($filters as $f) {
1304                         if ($f["type"] == $filter_name) {
1305                                 return $f;
1306                         };
1307                 }
1308                 return false;
1309         }
1310
1311         function find_article_filters($filters, $filter_name) {
1312                 $results = array();
1313
1314                 foreach ($filters as $f) {
1315                         if ($f["type"] == $filter_name) {
1316                                 array_push($results, $f);
1317                         };
1318                 }
1319                 return $results;
1320         }
1321
1322         function calculate_article_score($filters) {
1323                 $score = 0;
1324
1325                 foreach ($filters as $f) {
1326                         if ($f["type"] == "score") {
1327                                 $score += $f["param"];
1328                         };
1329                 }
1330                 return $score;
1331         }
1332
1333         function labels_contains_caption($labels, $caption) {
1334                 foreach ($labels as $label) {
1335                         if ($label[1] == $caption) {
1336                                 return true;
1337                         }
1338                 }
1339
1340                 return false;
1341         }
1342
1343         function assign_article_to_label_filters($link, $id, $filters, $owner_uid, $article_labels) {
1344                 foreach ($filters as $f) {
1345                         if ($f["type"] == "label") {
1346                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1347                                         label_add_article($link, $id, $f["param"], $owner_uid);
1348                                 }
1349                         }
1350                 }
1351         }
1352
1353         function make_guid_from_title($title) {
1354                 return preg_replace("/[ \"\',.:;]/", "-",
1355                         mb_strtolower(strip_tags($title), 'utf-8'));
1356         }
1357
1358
1359 ?>