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