include/rssfuncs.php

   1 <?php
   2         define_default('DAEMON_UPDATE_LOGIN_LIMIT', 30);
   3         define_default('DAEMON_FEED_LIMIT', 500);
   4         define_default('DAEMON_SLEEP_INTERVAL', 120);
   5
   6         function update_feedbrowser_cache() {
   7
   8                 $result = db_query("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("BEGIN");
  15
  16                 db_query("DELETE FROM ttrss_feedbrowser_cache");
  17
  18                 $count = 0;
  19
  20                 while ($line = db_fetch_assoc($result)) {
  21                         $subscribers = db_escape_string($line["subscribers"]);
  22                         $feed_url = db_escape_string($line["feed_url"]);
  23                         $title = db_escape_string($line["title"]);
  24                         $site_url = db_escape_string($line["site_url"]);
  25
  26                         $tmp_result = db_query("SELECT subscribers FROM
  27                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  28
  29                         if (db_num_rows($tmp_result) == 0) {
  30
  31                                 db_query("INSERT INTO ttrss_feedbrowser_cache
  32                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  33                                                 '$site_url', '$title', '$subscribers')");
  34
  35                                 ++$count;
  36
  37                         }
  38
  39                 }
  40
  41                 db_query("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 $debug Set to false to disable debug output. Default to true.
  58          * @return void
  59          */
  60         function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  61                 // Process all other feeds using last_updated and interval parameters
  62
  63                 $schema_version = get_schema_version();
  64
  65                 if ($schema_version != SCHEMA_VERSION) {
  66                         die("Schema version is wrong, please upgrade the database.\n");
  67                 }
  68
  69                 define('PREFS_NO_CACHE', true);
  70
  71                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  72                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  73                         if (DB_TYPE == "pgsql") {
  74                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  75                         } else {
  76                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  77                         }
  78                 } else {
  79                         $login_thresh_qpart = "";
  80                 }
  81
  82                 // Test if the feed need a update (update interval exceded).
  83                 if (DB_TYPE == "pgsql") {
  84                         $update_limit_qpart = "AND ((
  85                                         ttrss_feeds.update_interval = 0
  86                                         AND ttrss_user_prefs.value != '-1'
  87                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
  88                                 ) OR (
  89                                         ttrss_feeds.update_interval > 0
  90                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
  91                                 ) OR ttrss_feeds.last_updated IS NULL
  92                                 OR last_updated = '1970-01-01 00:00:00')";
  93                 } else {
  94                         $update_limit_qpart = "AND ((
  95                                         ttrss_feeds.update_interval = 0
  96                                         AND ttrss_user_prefs.value != '-1'
  97                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
  98                                 ) OR (
  99                                         ttrss_feeds.update_interval > 0
 100                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 101                                 ) OR ttrss_feeds.last_updated IS NULL
 102                                 OR last_updated = '1970-01-01 00:00:00')";
 103                 }
 104
 105                 // Test if feed is currently being updated by another process.
 106                 if (DB_TYPE == "pgsql") {
 107                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 108                 } else {
 109                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 110                 }
 111
 112                 // Test if there is a limit to number of updated feeds
 113                 $query_limit = "";
 114                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 115
 116                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 117                         FROM
 118                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 119                         WHERE
 120                                 ttrss_feeds.owner_uid = ttrss_users.id
 121                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 122                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 123                                 $login_thresh_qpart $update_limit_qpart
 124                                 $updstart_thresh_qpart
 125                                 ORDER BY last_updated $query_limit";
 126
 127                 // We search for feed needing update.
 128                 $result = db_query($query);
 129
 130                 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 131
 132                 // Here is a little cache magic in order to minimize risk of double feed updates.
 133                 $feeds_to_update = array();
 134                 while ($line = db_fetch_assoc($result)) {
 135                         array_push($feeds_to_update, db_escape_string($line['feed_url']));
 136                 }
 137
 138                 // We update the feed last update started date before anything else.
 139                 // There is no lag due to feed contents downloads
 140                 // It prevent an other process to update the same feed.
 141
 142                 if(count($feeds_to_update) > 0) {
 143                         $feeds_quoted = array();
 144
 145                         foreach ($feeds_to_update as $feed) {
 146                                 array_push($feeds_quoted, "'" . db_escape_string($feed) . "'");
 147                         }
 148
 149                         db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 150                                 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
 151                 }
 152
 153                 $nf = 0;
 154
 155                 // For each feed, we call the feed update function.
 156                 foreach ($feeds_to_update as $feed) {
 157                         if($debug) _debug("Base feed: $feed");
 158
 159                         //update_rss_feed($line["id"], true);
 160
 161                         // since we have the data cached, we can deal with other feeds with the same url
 162
 163                         $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 164                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 165                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 166                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 167                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 168                                 feed_url = '".db_escape_string($feed)."' AND
 169                                 (ttrss_feeds.update_interval > 0 OR
 170                                         ttrss_user_prefs.value != '-1')
 171                                 $login_thresh_qpart
 172                         ORDER BY ttrss_feeds.id $query_limit");
 173
 174                         if (db_num_rows($tmp_result) > 0) {
 175                                 while ($tline = db_fetch_assoc($tmp_result)) {
 176                                         if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 177                                         update_rss_feed($tline["id"], true);
 178                                         ++$nf;
 179                                 }
 180                         }
 181                 }
 182
 183                 require_once "digest.php";
 184
 185                 // Send feed digests by email if needed.
 186                 send_headlines_digests($debug);
 187
 188                 return $nf;
 189
 190         } // function update_daemon_common
 191
 192         // ignore_daemon is not used
 193         function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false,
 194                 $override_url = false) {
 195
 196                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 197
 198                 _debug("start", $debug_enabled);
 199
 200                 $result = db_query("SELECT id,update_interval,auth_login,
 201                         feed_url,auth_pass,cache_images,last_updated,
 202                         mark_unread_on_update, owner_uid,
 203                         pubsub_state, auth_pass_encrypted,
 204                         (SELECT max(date_entered) FROM
 205                                 ttrss_entries, ttrss_user_entries where ref_id = id AND feed_id = '$feed') AS last_article_timestamp
 206                         FROM ttrss_feeds WHERE id = '$feed'");
 207
 208                 if (db_num_rows($result) == 0) {
 209                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 210                         return false;
 211                 }
 212
 213                 // set last update to now so if anything *simplepie* crashes later we won't be
 214                 // continuously failing on the same feed
 215                 db_query("UPDATE ttrss_feeds SET last_updated = NOW() WHERE id = '$feed'");
 216
 217                 $last_updated = db_fetch_result($result, 0, "last_updated");
 218                 $last_article_timestamp = @strtotime(db_fetch_result($result, 0, "last_article_timestamp"));
 219                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 220                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 221                         0, "mark_unread_on_update"));
 222                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 223                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 224                         0, "auth_pass_encrypted"));
 225
 226                 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
 227                         WHERE id = '$feed'");
 228
 229                 $auth_login = db_fetch_result($result, 0, "auth_login");
 230                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 231
 232                 if ($auth_pass_encrypted) {
 233                         require_once "crypt.php";
 234                         $auth_pass = decrypt_string($auth_pass);
 235                 }
 236
 237                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 238                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 239
 240                 $feed = db_escape_string($feed);
 241
 242                 if ($override_url) $fetch_url = $override_url;
 243
 244                 $date_feed_processed = date('Y-m-d H:i');
 245
 246                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 247
 248                 // Ignore cache if new feed or manual update.
 249                 $cache_age = ($no_cache || is_null($last_updated) || strpos($last_updated, '1970-01-01') === 0) ? 30 : get_feed_update_interval($feed) * 60;
 250
 251                 _debug("cache filename: $cache_filename exists: " . file_exists($cache_filename), $debug_enabled);
 252                 _debug("cache age: $cache_age; no cache: $no_cache", $debug_enabled);
 253
 254                 $cached_feed_data_hash = false;
 255
 256                 $rss = false;
 257                 $rss_hash = false;
 258                 $cache_timestamp = file_exists($cache_filename) ? filemtime($cache_filename) : 0;
 259
 260                 $force_refetch = isset($_REQUEST["force_refetch"]);
 261
 262                 if (file_exists($cache_filename) &&
 263                         is_readable($cache_filename) &&
 264                         !$auth_login && !$auth_pass &&
 265                         filemtime($cache_filename) > time() - $cache_age) {
 266
 267                         _debug("using local cache.", $debug_enabled);
 268
 269                         @$feed_data = file_get_contents($cache_filename);
 270
 271                         if ($feed_data) {
 272                                 $rss_hash = sha1($feed_data);
 273                         }
 274
 275                 } else {
 276                         _debug("local cache will not be used for this feed", $debug_enabled);
 277                 }
 278
 279                 if (!$rss) {
 280
 281                         if (!$feed_data) {
 282                                 _debug("fetching [$fetch_url]...", $debug_enabled);
 283                                 _debug("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $last_article_timestamp), $debug_enabled);
 284
 285                                 $feed_data = fetch_file_contents($fetch_url, false,
 286                                         $auth_login, $auth_pass, false,
 287                                         $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 288                                         $force_refetch ? 0 : $last_article_timestamp);
 289
 290                                 global $fetch_curl_used;
 291
 292                                 if (!$fetch_curl_used) {
 293                                         $tmp = @gzdecode($feed_data);
 294
 295                                         if ($tmp) $feed_data = $tmp;
 296                                 }
 297
 298                                 $feed_data = trim($feed_data);
 299
 300                                 _debug("fetch done.", $debug_enabled);
 301
 302                                 if ($feed_data) {
 303                                         $error = verify_feed_xml($feed_data);
 304
 305                                         if ($error) {
 306                                                 _debug("error verifying XML, code: " . $error->code, $debug_enabled);
 307
 308                                                 if ($error->code == 26) {
 309                                                         _debug("got error 26, trying to decode entities...", $debug_enabled);
 310
 311                                                         $feed_data = html_entity_decode($feed_data, ENT_COMPAT, 'UTF-8');
 312
 313                                                         $error = verify_feed_xml($feed_data);
 314
 315                                                         if ($error) $feed_data = '';
 316                                                 }
 317                                         }
 318                                 }
 319                         }
 320
 321                         if (!$feed_data) {
 322                                 global $fetch_last_error;
 323                                 global $fetch_last_error_code;
 324
 325                                 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 326
 327                                 $error_escaped = '';
 328
 329                                 // If-Modified-Since
 330                                 if ($fetch_last_error_code != 304) {
 331                                         $error_escaped = db_escape_string($fetch_last_error);
 332                                 } else {
 333                                         _debug("source claims data not modified, nothing to do.", $debug_enabled);
 334                                 }
 335
 336                                 db_query(
 337                                         "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 338                                                 last_updated = NOW() WHERE id = '$feed'");
 339
 340                                 return;
 341                         }
 342                 }
 343
 344                 $pluginhost = new PluginHost();
 345                 $pluginhost->set_debug($debug_enabled, $debug_enabled);
 346                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 347
 348                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 349                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 350                 $pluginhost->load_data();
 351
 352                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 353                         $feed_data = $plugin->hook_feed_fetched($feed_data);
 354                 }
 355
 356                 if (!$rss) {
 357                         $rss = new FeedParser($feed_data);
 358                         $rss->init();
 359                 }
 360
 361 //              print_r($rss);
 362
 363                 $feed = db_escape_string($feed);
 364
 365                 if (!$rss->error()) {
 366
 367                         // cache data for later
 368                         if (!$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 369                                 $new_rss_hash = sha1($rss_data);
 370
 371                                 if ($new_rss_hash != $rss_hash && count($rss->get_items()) > 0 ) {
 372                                         _debug("saving $cache_filename", $debug_enabled);
 373                                         @file_put_contents($cache_filename, $feed_data);
 374                                 }
 375                         }
 376
 377                         // We use local pluginhost here because we need to load different per-user feed plugins
 378                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 379
 380                         _debug("processing feed data...", $debug_enabled);
 381
 382 //                      db_query("BEGIN");
 383
 384                         if (DB_TYPE == "pgsql") {
 385                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 386                         } else {
 387                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 388                         }
 389
 390                         $result = db_query("SELECT title,site_url,owner_uid,favicon_avg_color,
 391                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 392                                                 favicon_needs_check
 393                                 FROM ttrss_feeds WHERE id = '$feed'");
 394
 395                         $registered_title = db_fetch_result($result, 0, "title");
 396                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 397                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 398                                 "favicon_needs_check"));
 399                         $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
 400
 401                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 402
 403                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 404
 405                         _debug("site_url: $site_url", $debug_enabled);
 406                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 407
 408                         if ($favicon_needs_check || $force_refetch) {
 409
 410                                 /* terrible hack: if we crash on floicon shit here, we won't check
 411                                  * the icon avgcolor again (unless the icon got updated) */
 412
 413                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 414                                 $favicon_modified = @filemtime($favicon_file);
 415
 416                                 _debug("checking favicon...", $debug_enabled);
 417
 418                                 check_feed_favicon($site_url, $feed, $link);
 419                                 $favicon_modified_new = @filemtime($favicon_file);
 420
 421                                 if ($favicon_modified_new > $favicon_modified)
 422                                         $favicon_avg_color = '';
 423
 424                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 425                                                 require_once "colors.php";
 426
 427                                                 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 428                                                         id = '$feed'");
 429
 430                                                 $favicon_color = db_escape_string(
 431                                                         calculate_avg_color($favicon_file));
 432
 433                                                 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
 434                                 } else if ($favicon_avg_color == 'fail') {
 435                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 436                                 }
 437
 438                                 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 439                                         $favicon_colorstring
 440                                         WHERE id = '$feed'");
 441                         }
 442
 443                         if (!$registered_title || $registered_title == "[Unknown]") {
 444
 445                                 $feed_title = db_escape_string($rss->get_title());
 446
 447                                 if ($feed_title) {
 448                                         _debug("registering title: $feed_title", $debug_enabled);
 449
 450                                         db_query("UPDATE ttrss_feeds SET
 451                                                 title = '$feed_title' WHERE id = '$feed'");
 452                                 }
 453                         }
 454
 455                         if ($site_url && $orig_site_url != $site_url) {
 456                                 db_query("UPDATE ttrss_feeds SET
 457                                         site_url = '$site_url' WHERE id = '$feed'");
 458                         }
 459
 460                         _debug("loading filters & labels...", $debug_enabled);
 461
 462                         $filters = load_filters($feed, $owner_uid);
 463                         $labels = get_all_labels($owner_uid);
 464
 465                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 466
 467                         $items = $rss->get_items();
 468
 469                         if (!is_array($items)) {
 470                                 _debug("no articles found.", $debug_enabled);
 471
 472                                 db_query("UPDATE ttrss_feeds
 473                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 474
 475                                 return; // no articles
 476                         }
 477
 478                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 479
 480                                 _debug("checking for PUSH hub...", $debug_enabled);
 481
 482                                 $feed_hub_url = false;
 483
 484                                 $links = $rss->get_links('hub');
 485
 486                                 if ($links && is_array($links)) {
 487                                         foreach ($links as $l) {
 488                                                 $feed_hub_url = $l;
 489                                                 break;
 490                                         }
 491                                 }
 492
 493                                 _debug("feed hub url: $feed_hub_url", $debug_enabled);
 494
 495                                 if ($feed_hub_url && function_exists('curl_init') &&
 496                                         !ini_get("open_basedir")) {
 497
 498                                         require_once 'lib/pubsubhubbub/subscriber.php';
 499
 500                                         $callback_url = get_self_url_prefix() .
 501                                                 "/public.php?op=pubsub&id=$feed";
 502
 503                                         $s = new Subscriber($feed_hub_url, $callback_url);
 504
 505                                         $rc = $s->subscribe($fetch_url);
 506
 507                                         _debug("feed hub url found, subscribe request sent.", $debug_enabled);
 508
 509                                         db_query("UPDATE ttrss_feeds SET pubsub_state = 1
 510                                                 WHERE id = '$feed'");
 511                                 }
 512                         }
 513
 514                         _debug("processing articles...", $debug_enabled);
 515
 516                         foreach ($items as $item) {
 517                                 if ($_REQUEST['xdebug'] == 3) {
 518                                         print_r($item);
 519                                 }
 520
 521                                 $entry_guid = $item->get_id();
 522                                 if (!$entry_guid) $entry_guid = $item->get_link();
 523                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 524
 525                                 _debug("f_guid $entry_guid", $debug_enabled);
 526
 527                                 if (!$entry_guid) continue;
 528
 529                                 $entry_guid = "$owner_uid,$entry_guid";
 530
 531                                 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
 532
 533                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 534
 535                                 $entry_timestamp = "";
 536
 537                                 $entry_timestamp = $item->get_date();
 538
 539                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 540
 541                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 542                                         $entry_timestamp = time();
 543                                         $no_orig_date = 'true';
 544                                 } else {
 545                                         $no_orig_date = 'false';
 546                                 }
 547
 548                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 549
 550                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 551
 552 //                              $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
 553 //                              $entry_title = decode_numeric_entities($entry_title);
 554                                 $entry_title = $item->get_title();
 555
 556                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 557
 558                                 _debug("title $entry_title", $debug_enabled);
 559                                 _debug("link $entry_link", $debug_enabled);
 560
 561                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 562
 563                                 $entry_content = $item->get_content();
 564                                 if (!$entry_content) $entry_content = $item->get_description();
 565
 566                                 if ($_REQUEST["xdebug"] == 2) {
 567                                         print "content: ";
 568                                         print $entry_content;
 569                                         print "\n";
 570                                 }
 571
 572                                 $entry_comments = $item->get_comments_url();
 573                                 $entry_author = $item->get_author();
 574
 575                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 576
 577                                 $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
 578                                 $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
 579
 580                                 $num_comments = (int) $item->get_comments_count();
 581
 582                                 _debug("author $entry_author", $debug_enabled);
 583                                 _debug("num_comments: $num_comments", $debug_enabled);
 584                                 _debug("looking for tags...", $debug_enabled);
 585
 586                                 // parse <category> entries into tags
 587
 588                                 $additional_tags = array();
 589
 590                                 $additional_tags_src = $item->get_categories();
 591
 592                                 if (is_array($additional_tags_src)) {
 593                                         foreach ($additional_tags_src as $tobj) {
 594                                                 array_push($additional_tags, $tobj);
 595                                         }
 596                                 }
 597
 598                                 $entry_tags = array_unique($additional_tags);
 599
 600                                 for ($i = 0; $i < count($entry_tags); $i++)
 601                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 602
 603                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 604
 605                                 _debug("done collecting data.", $debug_enabled);
 606
 607                                 // TODO: less memory-hungry implementation
 608
 609                                 _debug("applying plugin filters..", $debug_enabled);
 610
 611                                 // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
 612                                 $result = db_query("SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
 613                                         WHERE ref_id = id AND (guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed') AND owner_uid = $owner_uid");
 614
 615                                 if (db_num_rows($result) != 0) {
 616                                         $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
 617                                         $stored_article = array("title" => db_fetch_result($result, 0, "title"),
 618                                                 "content" => db_fetch_result($result, 0, "content"),
 619                                                 "link" => db_fetch_result($result, 0, "link"),
 620                                                 "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
 621                                                 "author" => db_fetch_result($result, 0, "author"));
 622                                 } else {
 623                                         $entry_plugin_data = "";
 624                                         $stored_article = array();
 625                                 }
 626
 627                                 $article = array("owner_uid" => $owner_uid, // read only
 628                                         "guid" => $entry_guid, // read only
 629                                         "title" => $entry_title,
 630                                         "content" => $entry_content,
 631                                         "link" => $entry_link,
 632                                         "tags" => $entry_tags,
 633                                         "plugin_data" => $entry_plugin_data,
 634                                         "author" => $entry_author,
 635                                         "stored" => $stored_article);
 636
 637                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 638                                         $article = $plugin->hook_article_filter($article);
 639                                 }
 640
 641                                 $entry_tags = $article["tags"];
 642                                 $entry_guid = db_escape_string($entry_guid);
 643                                 $entry_title = db_escape_string($article["title"]);
 644                                 $entry_author = db_escape_string($article["author"]);
 645                                 $entry_link = db_escape_string($article["link"]);
 646                                 $entry_plugin_data = db_escape_string($article["plugin_data"]);
 647                                 $entry_content = $article["content"]; // escaped below
 648
 649
 650                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 651
 652                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 653                                         cache_images($entry_content, $site_url, $debug_enabled);
 654
 655                                 $entry_content = db_escape_string($entry_content, false);
 656
 657                                 $content_hash = "SHA1:" . sha1($entry_content);
 658
 659                                 db_query("BEGIN");
 660
 661                                 $result = db_query("SELECT id FROM      ttrss_entries
 662                                         WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
 663
 664                                 if (db_num_rows($result) == 0) {
 665
 666                                         _debug("base guid [$entry_guid] not found", $debug_enabled);
 667
 668                                         // base post entry does not exist, create it
 669
 670                                         $result = db_query(
 671                                                 "INSERT INTO ttrss_entries
 672                                                         (title,
 673                                                         guid,
 674                                                         link,
 675                                                         updated,
 676                                                         content,
 677                                                         content_hash,
 678                                                         cached_content,
 679                                                         no_orig_date,
 680                                                         date_updated,
 681                                                         date_entered,
 682                                                         comments,
 683                                                         num_comments,
 684                                                         plugin_data,
 685                                                         author)
 686                                                 VALUES
 687                                                         ('$entry_title',
 688                                                         '$entry_guid_hashed',
 689                                                         '$entry_link',
 690                                                         '$entry_timestamp_fmt',
 691                                                         '$entry_content',
 692                                                         '$content_hash',
 693                                                         '',
 694                                                         $no_orig_date,
 695                                                         NOW(),
 696                                                         '$date_feed_processed',
 697                                                         '$entry_comments',
 698                                                         '$num_comments',
 699                                                         '$entry_plugin_data',
 700                                                         '$entry_author')");
 701
 702                                         $article_labels = array();
 703
 704                                 } else {
 705                                         // we keep encountering the entry in feeds, so we need to
 706                                         // update date_updated column so that we don't get horrible
 707                                         // dupes when the entry gets purged and reinserted again e.g.
 708                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 709
 710                                         $base_entry_id = db_fetch_result($result, 0, "id");
 711
 712                                         db_query("UPDATE ttrss_entries SET date_updated = NOW()
 713                                                 WHERE id = '$base_entry_id'");
 714
 715                                         $article_labels = get_article_labels($base_entry_id, $owner_uid);
 716                                 }
 717
 718                                 // now it should exist, if not - bad luck then
 719
 720                                 $result = db_query("SELECT
 721                                                 id,content_hash,no_orig_date,title,plugin_data,guid,
 722                                                 ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
 723                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
 724                                                 num_comments
 725                                         FROM
 726                                                 ttrss_entries
 727                                         WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 728
 729                                 $entry_ref_id = 0;
 730                                 $entry_int_id = 0;
 731
 732                                 if (db_num_rows($result) == 1) {
 733
 734                                         _debug("base guid found, checking for user record", $debug_enabled);
 735
 736                                         // this will be used below in update handler
 737                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 738                                         $orig_title = db_fetch_result($result, 0, "title");
 739                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 740                                         $orig_date_updated = strtotime(db_fetch_result($result,
 741                                                 0, "date_updated"));
 742                                         $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
 743
 744                                         $ref_id = db_fetch_result($result, 0, "id");
 745                                         $entry_ref_id = $ref_id;
 746
 747                                         /* $stored_guid = db_fetch_result($result, 0, "guid");
 748                                         if ($stored_guid != $entry_guid_hashed) {
 749                                                 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
 750
 751                                                 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
 752                                                         id = '$ref_id'");
 753                                         } */
 754
 755                                         // check for user post link to main table
 756
 757                                         // do we allow duplicate posts with same GUID in different feeds?
 758                                         if (get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 759                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 760                                         } else {
 761                                                 $dupcheck_qpart = "";
 762                                         }
 763
 764                                         /* Collect article tags here so we could filter by them: */
 765
 766                                         $article_filters = get_article_filters($filters, $entry_title,
 767                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 768                                                 $entry_tags);
 769
 770                                         if ($debug_enabled) {
 771                                                 _debug("article filters: ", $debug_enabled);
 772                                                 if (count($article_filters) != 0) {
 773                                                         print_r($article_filters);
 774                                                 }
 775                                         }
 776
 777                                         if (find_article_filter($article_filters, "filter")) {
 778                                                 db_query("COMMIT"); // close transaction in progress
 779                                                 continue;
 780                                         }
 781
 782                                         $score = calculate_article_score($article_filters);
 783
 784                                         _debug("initial score: $score", $debug_enabled);
 785
 786                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 787                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 788                                                         $dupcheck_qpart";
 789
 790 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 791
 792                                         $result = db_query($query);
 793
 794                                         // okay it doesn't exist - create user entry
 795                                         if (db_num_rows($result) == 0) {
 796
 797                                                 _debug("user record not found, creating...", $debug_enabled);
 798
 799                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
 800                                                         $unread = 'true';
 801                                                         $last_read_qpart = 'NULL';
 802                                                 } else {
 803                                                         $unread = 'false';
 804                                                         $last_read_qpart = 'NOW()';
 805                                                 }
 806
 807                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 808                                                         $marked = 'true';
 809                                                 } else {
 810                                                         $marked = 'false';
 811                                                 }
 812
 813                                                 if (find_article_filter($article_filters, 'publish')) {
 814                                                         $published = 'true';
 815                                                 } else {
 816                                                         $published = 'false';
 817                                                 }
 818
 819                                                 // N-grams
 820
 821                                                 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 822
 823                                                         $result = db_query("SELECT COUNT(*) AS similar FROM
 824                                                                         ttrss_entries,ttrss_user_entries
 825                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 826                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 827                                                                         AND owner_uid = $owner_uid");
 828
 829                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 830
 831                                                         _debug("N-gram similar results: $ngram_similar", $debug_enabled);
 832
 833                                                         if ($ngram_similar > 0) {
 834                                                                 $unread = 'false';
 835                                                         }
 836                                                 }
 837
 838                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 839                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 840
 841                                                 $result = db_query(
 842                                                         "INSERT INTO ttrss_user_entries
 843                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 844                                                                 published, score, tag_cache, label_cache, uuid,
 845                                                                 last_marked, last_published)
 846                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 847                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 848                                                                 '', $last_marked, $last_published)");
 849
 850                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 851                                                         $rss_link = get_self_url_prefix() .
 852                                                                 "/public.php?op=rss&id=-2&key=" .
 853                                                                 get_feed_access_key(-2, false, $owner_uid);
 854
 855                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
 856
 857                                                         $pubsub_result = $p->publish_update($rss_link);
 858                                                 }
 859
 860                                                 $result = db_query(
 861                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 862                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 863                                                                 feed_id = '$feed' LIMIT 1");
 864
 865                                                 if (db_num_rows($result) == 1) {
 866                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 867                                                 }
 868                                         } else {
 869                                                 _debug("user record FOUND", $debug_enabled);
 870
 871                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 872                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 873                                         }
 874
 875                                         _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 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                                                 $update_insignificant = false;
 893                                         }
 894
 895                                         if (db_escape_string($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("post $entry_guid_hashed needs update...", $debug_enabled);
 906                                                 }
 907
 908 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 909
 910                                                 db_query("UPDATE ttrss_entries
 911                                                         SET title = '$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("UPDATE ttrss_user_entries
 921                                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
 922                                                         }
 923                                                 }
 924                                         }
 925                                 }
 926
 927                                 db_query("COMMIT");
 928
 929                                 _debug("assigning labels...", $debug_enabled);
 930
 931                                 assign_article_to_label_filters($entry_ref_id, $article_filters,
 932                                         $owner_uid, $article_labels);
 933
 934                                 _debug("looking for enclosures...", $debug_enabled);
 935
 936                                 // enclosures
 937
 938                                 $enclosures = array();
 939
 940                                 $encs = $item->get_enclosures();
 941
 942                                 if (is_array($encs)) {
 943                                         foreach ($encs as $e) {
 944                                                 $e_item = array(
 945                                                         $e->link, $e->type, $e->length);
 946                                                 array_push($enclosures, $e_item);
 947                                         }
 948                                 }
 949
 950                                 if ($debug_enabled) {
 951                                         _debug("article enclosures:", $debug_enabled);
 952                                         print_r($enclosures);
 953                                 }
 954
 955                                 db_query("BEGIN");
 956
 957                                 foreach ($enclosures as $enc) {
 958                                         $enc_url = db_escape_string($enc[0]);
 959                                         $enc_type = db_escape_string($enc[1]);
 960                                         $enc_dur = db_escape_string($enc[2]);
 961
 962                                         $result = db_query("SELECT id FROM ttrss_enclosures
 963                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
 964
 965                                         if (db_num_rows($result) == 0) {
 966                                                 db_query("INSERT INTO ttrss_enclosures
 967                                                         (content_url, content_type, title, duration, post_id) VALUES
 968                                                         ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
 969                                         }
 970                                 }
 971
 972                                 db_query("COMMIT");
 973
 974                                 // check for manual tags (we have to do it here since they're loaded from filters)
 975
 976                                 foreach ($article_filters as $f) {
 977                                         if ($f["type"] == "tag") {
 978
 979                                                 $manual_tags = trim_array(explode(",", $f["param"]));
 980
 981                                                 foreach ($manual_tags as $tag) {
 982                                                         if (tag_is_valid($tag)) {
 983                                                                 array_push($entry_tags, $tag);
 984                                                         }
 985                                                 }
 986                                         }
 987                                 }
 988
 989                                 // Skip boring tags
 990
 991                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
 992                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
 993
 994                                 $filtered_tags = array();
 995                                 $tags_to_cache = array();
 996
 997                                 if ($entry_tags && is_array($entry_tags)) {
 998                                         foreach ($entry_tags as $tag) {
 999                                                 if (array_search($tag, $boring_tags) === false) {
1000                                                         array_push($filtered_tags, $tag);
1001                                                 }
1002                                         }
1003                                 }
1004
1005                                 $filtered_tags = array_unique($filtered_tags);
1006
1007                                 if ($debug_enabled) {
1008                                         _debug("filtered article tags:", $debug_enabled);
1009                                         print_r($filtered_tags);
1010                                 }
1011
1012                                 // Save article tags in the database
1013
1014                                 if (count($filtered_tags) > 0) {
1015
1016                                         db_query("BEGIN");
1017
1018                                         foreach ($filtered_tags as $tag) {
1019
1020                                                 $tag = sanitize_tag($tag);
1021                                                 $tag = db_escape_string($tag);
1022
1023                                                 if (!tag_is_valid($tag)) continue;
1024
1025                                                 $result = db_query("SELECT id FROM ttrss_tags
1026                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1027                                                         owner_uid = '$owner_uid' LIMIT 1");
1028
1029                                                         if ($result && db_num_rows($result) == 0) {
1030
1031                                                                 db_query("INSERT INTO ttrss_tags
1032                                                                         (owner_uid,tag_name,post_int_id)
1033                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1034                                                         }
1035
1036                                                 array_push($tags_to_cache, $tag);
1037                                         }
1038
1039                                         /* update the cache */
1040
1041                                         $tags_to_cache = array_unique($tags_to_cache);
1042
1043                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1044
1045                                         db_query("UPDATE ttrss_user_entries
1046                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1047                                                 AND owner_uid = $owner_uid");
1048
1049                                         db_query("COMMIT");
1050                                 }
1051
1052                                 if (get_pref("AUTO_ASSIGN_LABELS", $owner_uid, false)) {
1053                                         _debug("auto-assigning labels...", $debug_enabled);
1054
1055                                         foreach ($labels as $label) {
1056                                                 $caption = preg_quote($label["caption"]);
1057
1058                                                 if ($caption && preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
1059                                                         if (!labels_contains_caption($article_labels, $caption)) {
1060                                                                 label_add_article($entry_ref_id, $caption, $owner_uid);
1061                                                         }
1062                                                 }
1063                                         }
1064                                 }
1065
1066                                 _debug("article processed", $debug_enabled);
1067                         }
1068
1069                         if (!$last_updated) {
1070                                 _debug("new feed, catching it up...", $debug_enabled);
1071                                 catchup_feed($feed, false, $owner_uid);
1072                         }
1073
1074                         _debug("purging feed...", $debug_enabled);
1075
1076                         purge_feed($feed, 0, $debug_enabled);
1077
1078                         db_query("UPDATE ttrss_feeds
1079                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1080
1081 //                      db_query("COMMIT");
1082
1083                 } else {
1084
1085                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1086
1087                         _debug("error fetching feed: $error_msg", $debug_enabled);
1088
1089                         db_query(
1090                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1091                                         last_updated = NOW() WHERE id = '$feed'");
1092                 }
1093
1094                 unset($rss);
1095
1096                 _debug("done", $debug_enabled);
1097         }
1098
1099         function cache_images($html, $site_url, $debug) {
1100                 $cache_dir = CACHE_DIR . "/images";
1101
1102                 libxml_use_internal_errors(true);
1103
1104                 $charset_hack = '<head>
1105                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1106                 </head>';
1107
1108                 $doc = new DOMDocument();
1109                 $doc->loadHTML($charset_hack . $html);
1110                 $xpath = new DOMXPath($doc);
1111
1112                 $entries = $xpath->query('(//img[@src])');
1113
1114                 foreach ($entries as $entry) {
1115                         if ($entry->hasAttribute('src')) {
1116                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1117
1118                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1119
1120                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1121
1122                                 if (!file_exists($local_filename)) {
1123                                         $file_content = fetch_file_contents($src);
1124
1125                                         if ($file_content && strlen($file_content) > 1024) {
1126                                                 file_put_contents($local_filename, $file_content);
1127                                         }
1128                                 }
1129
1130                                 if (file_exists($local_filename)) {
1131                                         $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1132                                                 base64_encode($src));
1133                                 }
1134                         }
1135                 }
1136
1137                 $node = $doc->getElementsByTagName('body')->item(0);
1138
1139                 return $doc->saveXML($node);
1140         }
1141
1142         function expire_error_log($debug) {
1143                 if ($debug) _debug("Removing old error log entries...");
1144
1145                 if (DB_TYPE == "pgsql") {
1146                         db_query("DELETE FROM ttrss_error_log
1147                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1148                 } else {
1149                         db_query("DELETE FROM ttrss_error_log
1150                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1151                 }
1152
1153         }
1154
1155         function expire_lock_files($debug) {
1156                 //if ($debug) _debug("Removing old lock files...");
1157
1158                 $num_deleted = 0;
1159
1160                 if (is_writable(LOCK_DIRECTORY)) {
1161                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1162
1163                         if ($files) {
1164                                 foreach ($files as $file) {
1165                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1166                                                 unlink($file);
1167                                                 ++$num_deleted;
1168                                         }
1169                                 }
1170                         }
1171                 }
1172
1173                 if ($debug) _debug("Removed $num_deleted old lock files.");
1174         }
1175
1176         function expire_cached_files($debug) {
1177                 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1178                         $cache_dir = CACHE_DIR . "/$dir";
1179
1180 //                      if ($debug) _debug("Expiring $cache_dir");
1181
1182                         $num_deleted = 0;
1183
1184                         if (is_writable($cache_dir)) {
1185                                 $files = glob("$cache_dir/*");
1186
1187                                 if ($files) {
1188                                         foreach ($files as $file) {
1189                                                 if (time() - filemtime($file) > 86400*7) {
1190                                                         unlink($file);
1191
1192                                                         ++$num_deleted;
1193                                                 }
1194                                         }
1195                                 }
1196                         }
1197
1198                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1199                 }
1200         }
1201
1202         /**
1203         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1204         * Returns the url query as associative array
1205         *
1206         * @param    string    query
1207         * @return    array    params
1208         */
1209         function convertUrlQuery($query) {
1210                 $queryParts = explode('&', $query);
1211
1212                 $params = array();
1213
1214                 foreach ($queryParts as $param) {
1215                         $item = explode('=', $param);
1216                         $params[$item[0]] = $item[1];
1217                 }
1218
1219                 return $params;
1220         }
1221
1222         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1223                 $matches = array();
1224
1225                 foreach ($filters as $filter) {
1226                         $match_any_rule = $filter["match_any_rule"];
1227                         $inverse = $filter["inverse"];
1228                         $filter_match = false;
1229
1230                         foreach ($filter["rules"] as $rule) {
1231                                 $match = false;
1232                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1233                                 $rule_inverse = $rule["inverse"];
1234
1235                                 if (!$reg_exp)
1236                                         continue;
1237
1238                                 switch ($rule["type"]) {
1239                                 case "title":
1240                                         $match = @preg_match("/$reg_exp/i", $title);
1241                                         break;
1242                                 case "content":
1243                                         // we don't need to deal with multiline regexps
1244                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1245
1246                                         $match = @preg_match("/$reg_exp/i", $content);
1247                                         break;
1248                                 case "both":
1249                                         // we don't need to deal with multiline regexps
1250                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1251
1252                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1253                                         break;
1254                                 case "link":
1255                                         $match = @preg_match("/$reg_exp/i", $link);
1256                                         break;
1257                                 case "author":
1258                                         $match = @preg_match("/$reg_exp/i", $author);
1259                                         break;
1260                                 case "tag":
1261                                         foreach ($tags as $tag) {
1262                                                 if (@preg_match("/$reg_exp/i", $tag)) {
1263                                                         $match = true;
1264                                                         break;
1265                                                 }
1266                                         }
1267                                         break;
1268                                 }
1269
1270                                 if ($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, $action);
1290
1291                                         // if Stop action encountered, perform no further processing
1292                                         if ($action["type"] == "stop") return $matches;
1293                                 }
1294                         }
1295                 }
1296
1297                 return $matches;
1298         }
1299
1300         function find_article_filter($filters, $filter_name) {
1301                 foreach ($filters as $f) {
1302                         if ($f["type"] == $filter_name) {
1303                                 return $f;
1304                         };
1305                 }
1306                 return false;
1307         }
1308
1309         function find_article_filters($filters, $filter_name) {
1310                 $results = array();
1311
1312                 foreach ($filters as $f) {
1313                         if ($f["type"] == $filter_name) {
1314                                 array_push($results, $f);
1315                         };
1316                 }
1317                 return $results;
1318         }
1319
1320         function calculate_article_score($filters) {
1321                 $score = 0;
1322
1323                 foreach ($filters as $f) {
1324                         if ($f["type"] == "score") {
1325                                 $score += $f["param"];
1326                         };
1327                 }
1328                 return $score;
1329         }
1330
1331         function labels_contains_caption($labels, $caption) {
1332                 foreach ($labels as $label) {
1333                         if ($label[1] == $caption) {
1334                                 return true;
1335                         }
1336                 }
1337
1338                 return false;
1339         }
1340
1341         function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1342                 foreach ($filters as $f) {
1343                         if ($f["type"] == "label") {
1344                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1345                                         label_add_article($id, $f["param"], $owner_uid);
1346                                 }
1347                         }
1348                 }
1349         }
1350
1351         function make_guid_from_title($title) {
1352                 return preg_replace("/[ \"\',.:;]/", "-",
1353                         mb_strtolower(strip_tags($title), 'utf-8'));
1354         }
1355
1356         function verify_feed_xml($feed_data) {
1357                 libxml_use_internal_errors(true);
1358                 $doc = new DOMDocument();
1359                 $doc->loadXML($feed_data);
1360                 $error = libxml_get_last_error();
1361                 libxml_clear_errors();
1362                 return $error;
1363         }
1364
1365         function housekeeping_common($debug) {
1366                 expire_cached_files($debug);
1367                 expire_lock_files($debug);
1368                 expire_error_log($debug);
1369
1370                 $count = update_feedbrowser_cache();
1371                 _debug("Feedbrowser updated, $count feeds processed.");
1372
1373                 purge_orphans( true);
1374                 $rc = cleanup_tags( 14, 50000);
1375
1376                 _debug("Cleaned $rc cached tags.");
1377         }
1378 ?>