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