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         define_default('_MIN_CACHE_IMAGE_SIZE', 1024);
   6
   7         function update_feedbrowser_cache() {
   8
   9                 $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
  10                         FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
  11                                 WHERE tf.feed_url = ttrss_feeds.feed_url
  12                                 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
  13                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  14
  15                 db_query("BEGIN");
  16
  17                 db_query("DELETE FROM ttrss_feedbrowser_cache");
  18
  19                 $count = 0;
  20
  21                 while ($line = db_fetch_assoc($result)) {
  22                         $subscribers = db_escape_string($line["subscribers"]);
  23                         $feed_url = db_escape_string($line["feed_url"]);
  24                         $title = db_escape_string($line["title"]);
  25                         $site_url = db_escape_string($line["site_url"]);
  26
  27                         $tmp_result = db_query("SELECT subscribers FROM
  28                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  29
  30                         if (db_num_rows($tmp_result) == 0) {
  31
  32                                 db_query("INSERT INTO ttrss_feedbrowser_cache
  33                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  34                                                 '$site_url', '$title', '$subscribers')");
  35
  36                                 ++$count;
  37
  38                         }
  39
  40                 }
  41
  42                 db_query("COMMIT");
  43
  44                 return $count;
  45
  46         }
  47
  48
  49         /**
  50          * Update a feed batch.
  51          * Used by daemons to update n feeds by run.
  52          * Only update feed needing a update, and not being processed
  53          * by another process.
  54          *
  55          * @param mixed $link Database link
  56          * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
  57          * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
  58          * @param boolean $debug Set to false to disable debug output. Default to true.
  59          * @return void
  60          */
  61         function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  62                 // Process all other feeds using last_updated and interval parameters
  63
  64                 $schema_version = get_schema_version();
  65
  66                 if ($schema_version != SCHEMA_VERSION) {
  67                         die("Schema version is wrong, please upgrade the database.\n");
  68                 }
  69
  70                 define('PREFS_NO_CACHE', true);
  71
  72                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  73                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  74                         if (DB_TYPE == "pgsql") {
  75                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  76                         } else {
  77                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  78                         }
  79                 } else {
  80                         $login_thresh_qpart = "";
  81                 }
  82
  83                 // Test if the feed need a update (update interval exceeded).
  84                 if (DB_TYPE == "pgsql") {
  85                         $update_limit_qpart = "AND ((
  86                                         ttrss_feeds.update_interval = 0
  87                                         AND ttrss_user_prefs.value != '-1'
  88                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
  89                                 ) OR (
  90                                         ttrss_feeds.update_interval > 0
  91                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
  92                                 ) OR (ttrss_feeds.last_updated IS NULL
  93                                         AND ttrss_user_prefs.value != '-1')
  94                                 OR (last_updated = '1970-01-01 00:00:00'
  95                                         AND ttrss_user_prefs.value != '-1'))";
  96                 } else {
  97                         $update_limit_qpart = "AND ((
  98                                         ttrss_feeds.update_interval = 0
  99                                         AND ttrss_user_prefs.value != '-1'
 100                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 101                                 ) OR (
 102                                         ttrss_feeds.update_interval > 0
 103                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 104                                 ) OR (ttrss_feeds.last_updated IS NULL
 105                                         AND ttrss_user_prefs.value != '-1')
 106                                 OR (last_updated = '1970-01-01 00:00:00'
 107                                         AND ttrss_user_prefs.value != '-1'))";
 108                 }
 109
 110                 // Test if feed is currently being updated by another process.
 111                 if (DB_TYPE == "pgsql") {
 112                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 113                 } else {
 114                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 115                 }
 116
 117                 // Test if there is a limit to number of updated feeds
 118                 $query_limit = "";
 119                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 120
 121                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 122                         FROM
 123                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 124                         WHERE
 125                                 ttrss_feeds.owner_uid = ttrss_users.id
 126                                 AND ttrss_user_prefs.profile IS NULL
 127                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 128                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 129                                 $login_thresh_qpart $update_limit_qpart
 130                                 $updstart_thresh_qpart
 131                                 ORDER BY last_updated $query_limit";
 132
 133                 // We search for feed needing update.
 134                 $result = db_query($query);
 135
 136                 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 137
 138                 // Here is a little cache magic in order to minimize risk of double feed updates.
 139                 $feeds_to_update = array();
 140                 while ($line = db_fetch_assoc($result)) {
 141                         array_push($feeds_to_update, db_escape_string($line['feed_url']));
 142                 }
 143
 144                 // We update the feed last update started date before anything else.
 145                 // There is no lag due to feed contents downloads
 146                 // It prevent an other process to update the same feed.
 147
 148                 if(count($feeds_to_update) > 0) {
 149                         $feeds_quoted = array();
 150
 151                         foreach ($feeds_to_update as $feed) {
 152                                 array_push($feeds_quoted, "'" . db_escape_string($feed) . "'");
 153                         }
 154
 155                         db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 156                                 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
 157                 }
 158
 159                 $nf = 0;
 160
 161                 // For each feed, we call the feed update function.
 162                 foreach ($feeds_to_update as $feed) {
 163                         if($debug) _debug("Base feed: $feed");
 164
 165                         //update_rss_feed($line["id"], true);
 166
 167                         // since we have the data cached, we can deal with other feeds with the same url
 168
 169                         $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 170                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 171                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 172                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 173                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 174                                 ttrss_user_prefs.profile IS NULL AND
 175                                 feed_url = '".db_escape_string($feed)."' AND
 176                                 (ttrss_feeds.update_interval > 0 OR
 177                                         ttrss_user_prefs.value != '-1')
 178                                 $login_thresh_qpart
 179                         ORDER BY ttrss_feeds.id $query_limit");
 180
 181                         if (db_num_rows($tmp_result) > 0) {
 182                                 $rss = false;
 183
 184                                 while ($tline = db_fetch_assoc($tmp_result)) {
 185                                         if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 186
 187                                         $rss = update_rss_feed($tline["id"], true, false);
 188                                         _debug_suppress(false);
 189                                         ++$nf;
 190                                 }
 191                         }
 192                 }
 193
 194                 require_once "digest.php";
 195
 196                 // Send feed digests by email if needed.
 197                 send_headlines_digests($debug);
 198
 199                 return $nf;
 200
 201         } // function update_daemon_common
 202
 203         // ignore_daemon is not used
 204         function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false, $rss = false) {
 205
 206                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 207
 208                 _debug_suppress(!$debug_enabled);
 209                 _debug("start", $debug_enabled);
 210
 211                 $result = db_query("SELECT id,update_interval,auth_login,
 212                         feed_url,auth_pass,cache_images,
 213                         mark_unread_on_update, owner_uid,
 214                         pubsub_state, auth_pass_encrypted,
 215                         (SELECT max(date_entered) FROM
 216                                 ttrss_entries, ttrss_user_entries where ref_id = id AND feed_id = '$feed') AS last_article_timestamp
 217                         FROM ttrss_feeds WHERE id = '$feed'");
 218
 219                 if (db_num_rows($result) == 0) {
 220                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 221                         return false;
 222                 }
 223
 224                 $last_article_timestamp = @strtotime(db_fetch_result($result, 0, "last_article_timestamp"));
 225
 226                 if (defined('_DISABLE_HTTP_304'))
 227                         $last_article_timestamp = 0;
 228
 229                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 230                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 231                         0, "mark_unread_on_update"));
 232                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 233                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 234                         0, "auth_pass_encrypted"));
 235
 236                 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
 237                         WHERE id = '$feed'");
 238
 239                 $auth_login = db_fetch_result($result, 0, "auth_login");
 240                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 241
 242                 if ($auth_pass_encrypted) {
 243                         require_once "crypt.php";
 244                         $auth_pass = decrypt_string($auth_pass);
 245                 }
 246
 247                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 248                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 249
 250                 $feed = db_escape_string($feed);
 251
 252                 $date_feed_processed = date('Y-m-d H:i');
 253
 254                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 255
 256                 $pluginhost = new PluginHost();
 257                 $pluginhost->set_debug($debug_enabled);
 258                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 259
 260                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 261                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 262                 $pluginhost->load_data();
 263
 264                 if ($rss && is_object($rss) && get_class($rss) == "FeedParser") {
 265                         _debug("using previously initialized parser object");
 266                 } else {
 267                         $rss_hash = false;
 268
 269                         $force_refetch = isset($_REQUEST["force_refetch"]);
 270
 271                         foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
 272                                 $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, $last_article_timestamp, $auth_login, $auth_pass);
 273                         }
 274
 275                         // try cache
 276                         if (!$feed_data &&
 277                                 file_exists($cache_filename) &&
 278                                 is_readable($cache_filename) &&
 279                                 !$auth_login && !$auth_pass &&
 280                                 filemtime($cache_filename) > time() - 30) {
 281
 282                                 _debug("using local cache [$cache_filename].", $debug_enabled);
 283
 284                                 @$feed_data = file_get_contents($cache_filename);
 285
 286                                 if ($feed_data) {
 287                                         $rss_hash = sha1($feed_data);
 288                                 }
 289
 290                         } else {
 291                                 _debug("local cache will not be used for this feed", $debug_enabled);
 292                         }
 293
 294                         // fetch feed from source
 295                         if (!$feed_data) {
 296                                 _debug("fetching [$fetch_url]...", $debug_enabled);
 297                                 _debug("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $last_article_timestamp), $debug_enabled);
 298
 299                                 $feed_data = fetch_file_contents($fetch_url, false,
 300                                         $auth_login, $auth_pass, false,
 301                                         $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 302                                         $force_refetch ? 0 : $last_article_timestamp);
 303
 304                                 global $fetch_curl_used;
 305
 306                                 if (!$fetch_curl_used) {
 307                                         $tmp = @gzdecode($feed_data);
 308
 309                                         if ($tmp) $feed_data = $tmp;
 310                                 }
 311
 312                                 $feed_data = trim($feed_data);
 313
 314                                 _debug("fetch done.", $debug_enabled);
 315
 316                                 /* if ($feed_data) {
 317                                         $error = verify_feed_xml($feed_data);
 318
 319                                         if ($error) {
 320                                                 _debug("error verifying XML, code: " . $error->code, $debug_enabled);
 321
 322                                                 if ($error->code == 26) {
 323                                                         _debug("got error 26, trying to decode entities...", $debug_enabled);
 324
 325                                                         $feed_data = html_entity_decode($feed_data, ENT_COMPAT, 'UTF-8');
 326
 327                                                         $error = verify_feed_xml($feed_data);
 328
 329                                                         if ($error) $feed_data = '';
 330                                                 }
 331                                         }
 332                                 } */
 333
 334                                 // cache vanilla feed data for re-use
 335                                 if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 336                                         $new_rss_hash = sha1($feed_data);
 337
 338                                         if ($new_rss_hash != $rss_hash) {
 339                                                 _debug("saving $cache_filename", $debug_enabled);
 340                                                 @file_put_contents($cache_filename, $feed_data);
 341                                         }
 342                                 }
 343                         }
 344
 345                         if (!$feed_data) {
 346                                 global $fetch_last_error;
 347                                 global $fetch_last_error_code;
 348
 349                                 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 350
 351                                 $error_escaped = '';
 352
 353                                 // If-Modified-Since
 354                                 if ($fetch_last_error_code != 304) {
 355                                         $error_escaped = db_escape_string($fetch_last_error);
 356                                 } else {
 357                                         _debug("source claims data not modified, nothing to do.", $debug_enabled);
 358                                 }
 359
 360                                 db_query(
 361                                         "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 362                                                 last_updated = NOW() WHERE id = '$feed'");
 363
 364                                 return;
 365                         }
 366                 }
 367
 368                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 369                         $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
 370                 }
 371
 372                 // set last update to now so if anything *simplepie* crashes later we won't be
 373                 // continuously failing on the same feed
 374                 //db_query("UPDATE ttrss_feeds SET last_updated = NOW() WHERE id = '$feed'");
 375
 376                 if (!$rss) {
 377                         $rss = new FeedParser($feed_data);
 378                         $rss->init();
 379                 }
 380
 381                 if (DETECT_ARTICLE_LANGUAGE) {
 382                         require_once "lib/languagedetect/LanguageDetect.php";
 383
 384                         $lang = new Text_LanguageDetect();
 385                         $lang->setNameMode(2);
 386                 }
 387
 388 //              print_r($rss);
 389
 390                 $feed = db_escape_string($feed);
 391
 392                 if (!$rss->error()) {
 393
 394                         // We use local pluginhost here because we need to load different per-user feed plugins
 395                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 396
 397                         _debug("processing feed data...", $debug_enabled);
 398
 399 //                      db_query("BEGIN");
 400
 401                         if (DB_TYPE == "pgsql") {
 402                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 403                         } else {
 404                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 405                         }
 406
 407                         $result = db_query("SELECT title,site_url,owner_uid,favicon_avg_color,
 408                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 409                                                 favicon_needs_check
 410                                 FROM ttrss_feeds WHERE id = '$feed'");
 411
 412                         $registered_title = db_fetch_result($result, 0, "title");
 413                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 414                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 415                                 "favicon_needs_check"));
 416                         $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
 417
 418                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 419
 420                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 421
 422                         _debug("site_url: $site_url", $debug_enabled);
 423                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 424
 425                         if ($favicon_needs_check || $force_refetch) {
 426
 427                                 /* terrible hack: if we crash on floicon shit here, we won't check
 428                                  * the icon avgcolor again (unless the icon got updated) */
 429
 430                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 431                                 $favicon_modified = @filemtime($favicon_file);
 432
 433                                 _debug("checking favicon...", $debug_enabled);
 434
 435                                 check_feed_favicon($site_url, $feed);
 436                                 $favicon_modified_new = @filemtime($favicon_file);
 437
 438                                 if ($favicon_modified_new > $favicon_modified)
 439                                         $favicon_avg_color = '';
 440
 441                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 442                                                 require_once "colors.php";
 443
 444                                                 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 445                                                         id = '$feed'");
 446
 447                                                 $favicon_color = db_escape_string(
 448                                                         calculate_avg_color($favicon_file));
 449
 450                                                 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
 451                                 } else if ($favicon_avg_color == 'fail') {
 452                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 453                                 }
 454
 455                                 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 456                                         $favicon_colorstring
 457                                         WHERE id = '$feed'");
 458                         }
 459
 460                         if (!$registered_title || $registered_title == "[Unknown]") {
 461
 462                                 $feed_title = db_escape_string($rss->get_title());
 463
 464                                 if ($feed_title) {
 465                                         _debug("registering title: $feed_title", $debug_enabled);
 466
 467                                         db_query("UPDATE ttrss_feeds SET
 468                                                 title = '$feed_title' WHERE id = '$feed'");
 469                                 }
 470                         }
 471
 472                         if ($site_url && $orig_site_url != $site_url) {
 473                                 db_query("UPDATE ttrss_feeds SET
 474                                         site_url = '$site_url' WHERE id = '$feed'");
 475                         }
 476
 477                         _debug("loading filters & labels...", $debug_enabled);
 478
 479                         $filters = load_filters($feed, $owner_uid);
 480                         $labels = get_all_labels($owner_uid);
 481
 482                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 483
 484                         $items = $rss->get_items();
 485
 486                         if (!is_array($items)) {
 487                                 _debug("no articles found.", $debug_enabled);
 488
 489                                 db_query("UPDATE ttrss_feeds
 490                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 491
 492                                 return; // no articles
 493                         }
 494
 495                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 496
 497                                 _debug("checking for PUSH hub...", $debug_enabled);
 498
 499                                 $feed_hub_url = false;
 500
 501                                 $links = $rss->get_links('hub');
 502
 503                                 if ($links && is_array($links)) {
 504                                         foreach ($links as $l) {
 505                                                 $feed_hub_url = $l;
 506                                                 break;
 507                                         }
 508                                 }
 509
 510                                 _debug("feed hub url: $feed_hub_url", $debug_enabled);
 511
 512                                 $feed_self_url = $fetch_url;
 513
 514                                 $links = $rss->get_links('self');
 515
 516                                 if ($links && is_array($links)) {
 517                                         foreach ($links as $l) {
 518                                                 $feed_self_url = $l;
 519                                                 break;
 520                                         }
 521                                 }
 522
 523                                 _debug("feed self url = $feed_self_url");
 524
 525                                 if ($feed_hub_url && $feed_self_url && function_exists('curl_init') &&
 526                                         !ini_get("open_basedir")) {
 527
 528                                         require_once 'lib/pubsubhubbub/subscriber.php';
 529
 530                                         $callback_url = get_self_url_prefix() .
 531                                                 "/public.php?op=pubsub&id=$feed";
 532
 533                                         $s = new Subscriber($feed_hub_url, $callback_url);
 534
 535                                         $rc = $s->subscribe($feed_self_url);
 536
 537                                         _debug("feed hub url found, subscribe request sent. [rc=$rc]", $debug_enabled);
 538
 539                                         db_query("UPDATE ttrss_feeds SET pubsub_state = 1
 540                                                 WHERE id = '$feed'");
 541                                 }
 542                         }
 543
 544                         _debug("processing articles...", $debug_enabled);
 545
 546                         foreach ($items as $item) {
 547                                 if ($_REQUEST['xdebug'] == 3) {
 548                                         print_r($item);
 549                                 }
 550
 551                                 $entry_guid = $item->get_id();
 552                                 if (!$entry_guid) $entry_guid = $item->get_link();
 553                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 554
 555                                 _debug("f_guid $entry_guid", $debug_enabled);
 556
 557                                 if (!$entry_guid) continue;
 558
 559                                 $entry_guid = "$owner_uid,$entry_guid";
 560
 561                                 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
 562
 563                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 564
 565                                 $entry_timestamp = "";
 566
 567                                 $entry_timestamp = $item->get_date();
 568
 569                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 570
 571                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 572                                         $entry_timestamp = time();
 573                                 }
 574
 575                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 576
 577                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 578
 579 //                              $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
 580 //                              $entry_title = decode_numeric_entities($entry_title);
 581                                 $entry_title = $item->get_title();
 582
 583                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 584
 585                                 _debug("title $entry_title", $debug_enabled);
 586                                 _debug("link $entry_link", $debug_enabled);
 587
 588                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 589
 590                                 $entry_content = $item->get_content();
 591                                 if (!$entry_content) $entry_content = $item->get_description();
 592
 593                                 if ($_REQUEST["xdebug"] == 2) {
 594                                         print "content: ";
 595                                         print $entry_content;
 596                                         print "\n";
 597                                 }
 598
 599                                 $entry_language = "";
 600
 601                                 if (DETECT_ARTICLE_LANGUAGE) {
 602                                         $entry_language = $lang->detect($entry_title . " " . $entry_content, 1);
 603
 604                                         if (count($entry_language) > 0) {
 605                                                 $entry_language = array_keys($entry_language);
 606
 607                                                 // the fuck?
 608                                                 if (is_array($entry_language))
 609                                                         $entry_language = "";
 610                                                 else
 611                                                         $entry_language = db_escape_string(substr($entry_language[0], 0, 2));
 612
 613                                                 _debug("detected language: $entry_language", $debug_enabled);
 614                                         } else {
 615                                                 $entry_language = "";
 616                                         }
 617                                 }
 618
 619                                 $entry_comments = $item->get_comments_url();
 620                                 $entry_author = $item->get_author();
 621
 622                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 623
 624                                 $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
 625                                 $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
 626
 627                                 $num_comments = (int) $item->get_comments_count();
 628
 629                                 _debug("author $entry_author", $debug_enabled);
 630                                 _debug("num_comments: $num_comments", $debug_enabled);
 631                                 _debug("looking for tags...", $debug_enabled);
 632
 633                                 // parse <category> entries into tags
 634
 635                                 $additional_tags = array();
 636
 637                                 $additional_tags_src = $item->get_categories();
 638
 639                                 if (is_array($additional_tags_src)) {
 640                                         foreach ($additional_tags_src as $tobj) {
 641                                                 array_push($additional_tags, $tobj);
 642                                         }
 643                                 }
 644
 645                                 $entry_tags = array_unique($additional_tags);
 646
 647                                 for ($i = 0; $i < count($entry_tags); $i++)
 648                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 649
 650                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 651
 652                                 _debug("done collecting data.", $debug_enabled);
 653
 654                                 // TODO: less memory-hungry implementation
 655
 656                                 _debug("applying plugin filters..", $debug_enabled);
 657
 658                                 // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
 659                                 $result = db_query("SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
 660                                         WHERE ref_id = id AND (guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed') AND owner_uid = $owner_uid");
 661
 662                                 if (db_num_rows($result) != 0) {
 663                                         $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
 664                                         $stored_article = array("title" => db_fetch_result($result, 0, "title"),
 665                                                 "content" => db_fetch_result($result, 0, "content"),
 666                                                 "link" => db_fetch_result($result, 0, "link"),
 667                                                 "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
 668                                                 "author" => db_fetch_result($result, 0, "author"));
 669                                 } else {
 670                                         $entry_plugin_data = "";
 671                                         $stored_article = array();
 672                                 }
 673
 674                                 $article = array("owner_uid" => $owner_uid, // read only
 675                                         "guid" => $entry_guid, // read only
 676                                         "title" => $entry_title,
 677                                         "content" => $entry_content,
 678                                         "link" => $entry_link,
 679                                         "tags" => $entry_tags,
 680                                         "plugin_data" => $entry_plugin_data,
 681                                         "author" => $entry_author,
 682                                         "stored" => $stored_article,
 683                                         "feed" => array("id" => $feed,
 684                                                 "fetch_url" => $fetch_url,
 685                                                 "site_url" => $site_url)
 686                                         );
 687
 688                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 689                                         $article = $plugin->hook_article_filter($article);
 690                                 }
 691
 692                                 $entry_tags = $article["tags"];
 693                                 $entry_guid = db_escape_string($entry_guid);
 694                                 $entry_title = db_escape_string($article["title"]);
 695                                 $entry_author = db_escape_string($article["author"]);
 696                                 $entry_link = db_escape_string($article["link"]);
 697                                 $entry_plugin_data = db_escape_string($article["plugin_data"]);
 698                                 $entry_content = $article["content"]; // escaped below
 699
 700
 701                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 702
 703                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 704                                         cache_images($entry_content, $site_url, $debug_enabled);
 705
 706                                 $entry_content = db_escape_string($entry_content, false);
 707
 708                                 $content_hash = "SHA1:" . sha1($entry_content);
 709
 710                                 db_query("BEGIN");
 711
 712                                 $result = db_query("SELECT id FROM      ttrss_entries
 713                                         WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
 714
 715                                 if (db_num_rows($result) == 0) {
 716
 717                                         _debug("base guid [$entry_guid] not found", $debug_enabled);
 718
 719                                         // base post entry does not exist, create it
 720
 721                                         $result = db_query(
 722                                                 "INSERT INTO ttrss_entries
 723                                                         (title,
 724                                                         guid,
 725                                                         link,
 726                                                         updated,
 727                                                         content,
 728                                                         content_hash,
 729                                                         no_orig_date,
 730                                                         date_updated,
 731                                                         date_entered,
 732                                                         comments,
 733                                                         num_comments,
 734                                                         plugin_data,
 735                                                         lang,
 736                                                         author)
 737                                                 VALUES
 738                                                         ('$entry_title',
 739                                                         '$entry_guid_hashed',
 740                                                         '$entry_link',
 741                                                         '$entry_timestamp_fmt',
 742                                                         '$entry_content',
 743                                                         '$content_hash',
 744                                                         false,
 745                                                         NOW(),
 746                                                         '$date_feed_processed',
 747                                                         '$entry_comments',
 748                                                         '$num_comments',
 749                                                         '$entry_plugin_data',
 750                                                         '$entry_language',
 751                                                         '$entry_author')");
 752
 753                                         $article_labels = array();
 754
 755                                 } else {
 756                                         // we keep encountering the entry in feeds, so we need to
 757                                         // update date_updated column so that we don't get horrible
 758                                         // dupes when the entry gets purged and reinserted again e.g.
 759                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 760
 761                                         $base_entry_id = db_fetch_result($result, 0, "id");
 762
 763                                         db_query("UPDATE ttrss_entries SET date_updated = NOW()
 764                                                 WHERE id = '$base_entry_id'");
 765
 766                                         $article_labels = get_article_labels($base_entry_id, $owner_uid);
 767                                 }
 768
 769                                 // now it should exist, if not - bad luck then
 770
 771                                 $result = db_query("SELECT
 772                                                 id,content_hash,title,plugin_data,guid,
 773                                                 num_comments
 774                                         FROM
 775                                                 ttrss_entries
 776                                         WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 777
 778                                 $entry_ref_id = 0;
 779                                 $entry_int_id = 0;
 780
 781                                 if (db_num_rows($result) == 1) {
 782
 783                                         _debug("base guid found, checking for user record", $debug_enabled);
 784
 785                                         // this will be used below in update handler
 786                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 787                                         $orig_title = db_fetch_result($result, 0, "title");
 788                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 789                                         $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
 790
 791                                         $ref_id = db_fetch_result($result, 0, "id");
 792                                         $entry_ref_id = $ref_id;
 793
 794                                         /* $stored_guid = db_fetch_result($result, 0, "guid");
 795                                         if ($stored_guid != $entry_guid_hashed) {
 796                                                 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
 797
 798                                                 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
 799                                                         id = '$ref_id'");
 800                                         } */
 801
 802                                         // check for user post link to main table
 803
 804                                         // do we allow duplicate posts with same GUID in different feeds?
 805                                         if (get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 806                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 807                                         } else {
 808                                                 $dupcheck_qpart = "";
 809                                         }
 810
 811                                         /* Collect article tags here so we could filter by them: */
 812
 813                                         $article_filters = get_article_filters($filters, $entry_title,
 814                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 815                                                 $entry_tags);
 816
 817                                         if ($debug_enabled) {
 818                                                 _debug("article filters: ", $debug_enabled);
 819                                                 if (count($article_filters) != 0) {
 820                                                         print_r($article_filters);
 821                                                 }
 822                                         }
 823
 824                                         if (find_article_filter($article_filters, "filter")) {
 825                                                 db_query("COMMIT"); // close transaction in progress
 826                                                 continue;
 827                                         }
 828
 829                                         $score = calculate_article_score($article_filters);
 830
 831                                         _debug("initial score: $score", $debug_enabled);
 832
 833                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 834                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 835                                                         $dupcheck_qpart";
 836
 837 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 838
 839                                         $result = db_query($query);
 840
 841                                         // okay it doesn't exist - create user entry
 842                                         if (db_num_rows($result) == 0) {
 843
 844                                                 _debug("user record not found, creating...", $debug_enabled);
 845
 846                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
 847                                                         $unread = 'true';
 848                                                         $last_read_qpart = 'NULL';
 849                                                 } else {
 850                                                         $unread = 'false';
 851                                                         $last_read_qpart = 'NOW()';
 852                                                 }
 853
 854                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 855                                                         $marked = 'true';
 856                                                 } else {
 857                                                         $marked = 'false';
 858                                                 }
 859
 860                                                 if (find_article_filter($article_filters, 'publish')) {
 861                                                         $published = 'true';
 862                                                 } else {
 863                                                         $published = 'false';
 864                                                 }
 865
 866                                                 // N-grams
 867
 868                                                 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 869
 870                                                         $result = db_query("SELECT COUNT(*) AS similar FROM
 871                                                                         ttrss_entries,ttrss_user_entries
 872                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 873                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 874                                                                         AND owner_uid = $owner_uid");
 875
 876                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 877
 878                                                         _debug("N-gram similar results: $ngram_similar", $debug_enabled);
 879
 880                                                         if ($ngram_similar > 0) {
 881                                                                 $unread = 'false';
 882                                                         }
 883                                                 }
 884
 885                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 886                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 887
 888                                                 $result = db_query(
 889                                                         "INSERT INTO ttrss_user_entries
 890                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 891                                                                 published, score, tag_cache, label_cache, uuid,
 892                                                                 last_marked, last_published)
 893                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 894                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 895                                                                 '', $last_marked, $last_published)");
 896
 897                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 898                                                         $rss_link = get_self_url_prefix() .
 899                                                                 "/public.php?op=rss&id=-2&key=" .
 900                                                                 get_feed_access_key(-2, false, $owner_uid);
 901
 902                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
 903
 904                                                         /* $pubsub_result = */ $p->publish_update($rss_link);
 905                                                 }
 906
 907                                                 $result = db_query(
 908                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 909                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 910                                                                 feed_id = '$feed' LIMIT 1");
 911
 912                                                 if (db_num_rows($result) == 1) {
 913                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 914                                                 }
 915                                         } else {
 916                                                 _debug("user record FOUND", $debug_enabled);
 917
 918                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 919                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 920                                         }
 921
 922                                         _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 923
 924                                         $post_needs_update = false;
 925                                         $update_insignificant = false;
 926
 927                                         if ($orig_num_comments != $num_comments) {
 928                                                 $post_needs_update = true;
 929                                                 $update_insignificant = true;
 930                                         }
 931
 932                                         if ($entry_plugin_data != $orig_plugin_data) {
 933                                                 $post_needs_update = true;
 934                                                 $update_insignificant = true;
 935                                         }
 936
 937                                         if ($content_hash != $orig_content_hash) {
 938                                                 $post_needs_update = true;
 939                                                 $update_insignificant = false;
 940                                         }
 941
 942                                         if (db_escape_string($orig_title) != $entry_title) {
 943                                                 $post_needs_update = true;
 944                                                 $update_insignificant = false;
 945                                         }
 946
 947                                         // if post needs update, update it and mark all user entries
 948                                         // linking to this post as updated
 949                                         if ($post_needs_update) {
 950
 951                                                 if (defined('DAEMON_EXTENDED_DEBUG')) {
 952                                                         _debug("post $entry_guid_hashed needs update...", $debug_enabled);
 953                                                 }
 954
 955 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
 956
 957                                                 db_query("UPDATE ttrss_entries
 958                                                         SET title = '$entry_title', content = '$entry_content',
 959                                                                 content_hash = '$content_hash',
 960                                                                 updated = '$entry_timestamp_fmt',
 961                                                                 num_comments = '$num_comments',
 962                                                                 plugin_data = '$entry_plugin_data'
 963                                                         WHERE id = '$ref_id'");
 964
 965                                                 if (!$update_insignificant) {
 966                                                         if ($mark_unread_on_update) {
 967                                                                 db_query("UPDATE ttrss_user_entries
 968                                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
 969                                                         }
 970                                                 }
 971                                         }
 972                                 }
 973
 974                                 db_query("COMMIT");
 975
 976                                 _debug("assigning labels...", $debug_enabled);
 977
 978                                 assign_article_to_label_filters($entry_ref_id, $article_filters,
 979                                         $owner_uid, $article_labels);
 980
 981                                 _debug("looking for enclosures...", $debug_enabled);
 982
 983                                 // enclosures
 984
 985                                 $enclosures = array();
 986
 987                                 $encs = $item->get_enclosures();
 988
 989                                 if (is_array($encs)) {
 990                                         foreach ($encs as $e) {
 991                                                 $e_item = array(
 992                                                         $e->link, $e->type, $e->length, $e->title);
 993                                                 array_push($enclosures, $e_item);
 994                                         }
 995                                 }
 996
 997                                 if ($debug_enabled) {
 998                                         _debug("article enclosures:", $debug_enabled);
 999                                         print_r($enclosures);
1000                                 }
1001
1002                                 db_query("BEGIN");
1003
1004 //                              debugging
1005 //                              db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
1006
1007                                 foreach ($enclosures as $enc) {
1008                                         $enc_url = db_escape_string($enc[0]);
1009                                         $enc_type = db_escape_string($enc[1]);
1010                                         $enc_dur = db_escape_string($enc[2]);
1011                                         $enc_title = db_escape_string($enc[3]);
1012
1013                                         $result = db_query("SELECT id FROM ttrss_enclosures
1014                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1015
1016                                         if (db_num_rows($result) == 0) {
1017                                                 db_query("INSERT INTO ttrss_enclosures
1018                                                         (content_url, content_type, title, duration, post_id) VALUES
1019                                                         ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id')");
1020                                         }
1021                                 }
1022
1023                                 db_query("COMMIT");
1024
1025                                 // check for manual tags (we have to do it here since they're loaded from filters)
1026
1027                                 foreach ($article_filters as $f) {
1028                                         if ($f["type"] == "tag") {
1029
1030                                                 $manual_tags = trim_array(explode(",", $f["param"]));
1031
1032                                                 foreach ($manual_tags as $tag) {
1033                                                         if (tag_is_valid($tag)) {
1034                                                                 array_push($entry_tags, $tag);
1035                                                         }
1036                                                 }
1037                                         }
1038                                 }
1039
1040                                 // Skip boring tags
1041
1042                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1043                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1044
1045                                 $filtered_tags = array();
1046                                 $tags_to_cache = array();
1047
1048                                 if ($entry_tags && is_array($entry_tags)) {
1049                                         foreach ($entry_tags as $tag) {
1050                                                 if (array_search($tag, $boring_tags) === false) {
1051                                                         array_push($filtered_tags, $tag);
1052                                                 }
1053                                         }
1054                                 }
1055
1056                                 $filtered_tags = array_unique($filtered_tags);
1057
1058                                 if ($debug_enabled) {
1059                                         _debug("filtered article tags:", $debug_enabled);
1060                                         print_r($filtered_tags);
1061                                 }
1062
1063                                 // Save article tags in the database
1064
1065                                 if (count($filtered_tags) > 0) {
1066
1067                                         db_query("BEGIN");
1068
1069                                         foreach ($filtered_tags as $tag) {
1070
1071                                                 $tag = sanitize_tag($tag);
1072                                                 $tag = db_escape_string($tag);
1073
1074                                                 if (!tag_is_valid($tag)) continue;
1075
1076                                                 $result = db_query("SELECT id FROM ttrss_tags
1077                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1078                                                         owner_uid = '$owner_uid' LIMIT 1");
1079
1080                                                         if ($result && db_num_rows($result) == 0) {
1081
1082                                                                 db_query("INSERT INTO ttrss_tags
1083                                                                         (owner_uid,tag_name,post_int_id)
1084                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1085                                                         }
1086
1087                                                 array_push($tags_to_cache, $tag);
1088                                         }
1089
1090                                         /* update the cache */
1091
1092                                         $tags_to_cache = array_unique($tags_to_cache);
1093
1094                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1095
1096                                         db_query("UPDATE ttrss_user_entries
1097                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1098                                                 AND owner_uid = $owner_uid");
1099
1100                                         db_query("COMMIT");
1101                                 }
1102
1103                                 if (get_pref("AUTO_ASSIGN_LABELS", $owner_uid, false)) {
1104                                         _debug("auto-assigning labels...", $debug_enabled);
1105
1106                                         foreach ($labels as $label) {
1107                                                 $caption = preg_quote($label["caption"]);
1108
1109                                                 if ($caption && preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
1110                                                         if (!labels_contains_caption($article_labels, $caption)) {
1111                                                                 label_add_article($entry_ref_id, $caption, $owner_uid);
1112                                                         }
1113                                                 }
1114                                         }
1115                                 }
1116
1117                                 _debug("article processed", $debug_enabled);
1118                         }
1119
1120                         _debug("purging feed...", $debug_enabled);
1121
1122                         purge_feed($feed, 0, $debug_enabled);
1123
1124                         db_query("UPDATE ttrss_feeds
1125                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1126
1127 //                      db_query("COMMIT");
1128
1129                 } else {
1130
1131                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1132
1133                         _debug("fetch error: $error_msg", $debug_enabled);
1134
1135                         if (count($rss->errors()) > 1) {
1136                                 foreach ($rss->errors() as $error) {
1137                                         _debug("+ $error");
1138                                 }
1139                         }
1140
1141                         db_query(
1142                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1143                                 last_updated = NOW() WHERE id = '$feed'");
1144
1145                         unset($rss);
1146                 }
1147
1148                 _debug("done", $debug_enabled);
1149
1150                 return $rss;
1151         }
1152
1153         function cache_images($html, $site_url, $debug) {
1154                 libxml_use_internal_errors(true);
1155
1156                 $charset_hack = '<head>
1157                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1158                 </head>';
1159
1160                 $doc = new DOMDocument();
1161                 $doc->loadHTML($charset_hack . $html);
1162                 $xpath = new DOMXPath($doc);
1163
1164                 $entries = $xpath->query('(//img[@src])');
1165
1166                 foreach ($entries as $entry) {
1167                         if ($entry->hasAttribute('src')) {
1168                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1169
1170                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1171
1172                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1173
1174                                 if (!file_exists($local_filename)) {
1175                                         $file_content = fetch_file_contents($src);
1176
1177                                         if ($file_content && strlen($file_content) > _MIN_CACHE_IMAGE_SIZE) {
1178                                                 file_put_contents($local_filename, $file_content);
1179                                         }
1180                                 }
1181
1182                                 /* if (file_exists($local_filename)) {
1183                                         $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1184                                                 base64_encode($src));
1185                                 } */
1186                         }
1187                 }
1188
1189                 //$node = $doc->getElementsByTagName('body')->item(0);
1190                 //return $doc->saveXML($node);
1191         }
1192
1193         function expire_error_log($debug) {
1194                 if ($debug) _debug("Removing old error log entries...");
1195
1196                 if (DB_TYPE == "pgsql") {
1197                         db_query("DELETE FROM ttrss_error_log
1198                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1199                 } else {
1200                         db_query("DELETE FROM ttrss_error_log
1201                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1202                 }
1203
1204         }
1205
1206         function expire_lock_files($debug) {
1207                 //if ($debug) _debug("Removing old lock files...");
1208
1209                 $num_deleted = 0;
1210
1211                 if (is_writable(LOCK_DIRECTORY)) {
1212                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1213
1214                         if ($files) {
1215                                 foreach ($files as $file) {
1216                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1217                                                 unlink($file);
1218                                                 ++$num_deleted;
1219                                         }
1220                                 }
1221                         }
1222                 }
1223
1224                 if ($debug) _debug("Removed $num_deleted old lock files.");
1225         }
1226
1227         function expire_cached_files($debug) {
1228                 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1229                         $cache_dir = CACHE_DIR . "/$dir";
1230
1231 //                      if ($debug) _debug("Expiring $cache_dir");
1232
1233                         $num_deleted = 0;
1234
1235                         if (is_writable($cache_dir)) {
1236                                 $files = glob("$cache_dir/*");
1237
1238                                 if ($files) {
1239                                         foreach ($files as $file) {
1240                                                 if (time() - filemtime($file) > 86400*7) {
1241                                                         unlink($file);
1242
1243                                                         ++$num_deleted;
1244                                                 }
1245                                         }
1246                                 }
1247                         }
1248
1249                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1250                 }
1251         }
1252
1253         /**
1254         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1255         * Returns the url query as associative array
1256         *
1257         * @param    string    query
1258         * @return    array    params
1259         */
1260         function convertUrlQuery($query) {
1261                 $queryParts = explode('&', $query);
1262
1263                 $params = array();
1264
1265                 foreach ($queryParts as $param) {
1266                         $item = explode('=', $param);
1267                         $params[$item[0]] = $item[1];
1268                 }
1269
1270                 return $params;
1271         }
1272
1273         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1274                 $matches = array();
1275
1276                 foreach ($filters as $filter) {
1277                         $match_any_rule = $filter["match_any_rule"];
1278                         $inverse = $filter["inverse"];
1279                         $filter_match = false;
1280
1281                         foreach ($filter["rules"] as $rule) {
1282                                 $match = false;
1283                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1284                                 $rule_inverse = $rule["inverse"];
1285
1286                                 if (!$reg_exp)
1287                                         continue;
1288
1289                                 switch ($rule["type"]) {
1290                                 case "title":
1291                                         $match = @preg_match("/$reg_exp/i", $title);
1292                                         break;
1293                                 case "content":
1294                                         // we don't need to deal with multiline regexps
1295                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1296
1297                                         $match = @preg_match("/$reg_exp/i", $content);
1298                                         break;
1299                                 case "both":
1300                                         // we don't need to deal with multiline regexps
1301                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1302
1303                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1304                                         break;
1305                                 case "link":
1306                                         $match = @preg_match("/$reg_exp/i", $link);
1307                                         break;
1308                                 case "author":
1309                                         $match = @preg_match("/$reg_exp/i", $author);
1310                                         break;
1311                                 case "tag":
1312                                         foreach ($tags as $tag) {
1313                                                 if (@preg_match("/$reg_exp/i", $tag)) {
1314                                                         $match = true;
1315                                                         break;
1316                                                 }
1317                                         }
1318                                         break;
1319                                 }
1320
1321                                 if ($rule_inverse) $match = !$match;
1322
1323                                 if ($match_any_rule) {
1324                                         if ($match) {
1325                                                 $filter_match = true;
1326                                                 break;
1327                                         }
1328                                 } else {
1329                                         $filter_match = $match;
1330                                         if (!$match) {
1331                                                 break;
1332                                         }
1333                                 }
1334                         }
1335
1336                         if ($inverse) $filter_match = !$filter_match;
1337
1338                         if ($filter_match) {
1339                                 foreach ($filter["actions"] AS $action) {
1340                                         array_push($matches, $action);
1341
1342                                         // if Stop action encountered, perform no further processing
1343                                         if ($action["type"] == "stop") return $matches;
1344                                 }
1345                         }
1346                 }
1347
1348                 return $matches;
1349         }
1350
1351         function find_article_filter($filters, $filter_name) {
1352                 foreach ($filters as $f) {
1353                         if ($f["type"] == $filter_name) {
1354                                 return $f;
1355                         };
1356                 }
1357                 return false;
1358         }
1359
1360         function find_article_filters($filters, $filter_name) {
1361                 $results = array();
1362
1363                 foreach ($filters as $f) {
1364                         if ($f["type"] == $filter_name) {
1365                                 array_push($results, $f);
1366                         };
1367                 }
1368                 return $results;
1369         }
1370
1371         function calculate_article_score($filters) {
1372                 $score = 0;
1373
1374                 foreach ($filters as $f) {
1375                         if ($f["type"] == "score") {
1376                                 $score += $f["param"];
1377                         };
1378                 }
1379                 return $score;
1380         }
1381
1382         function labels_contains_caption($labels, $caption) {
1383                 foreach ($labels as $label) {
1384                         if ($label[1] == $caption) {
1385                                 return true;
1386                         }
1387                 }
1388
1389                 return false;
1390         }
1391
1392         function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1393                 foreach ($filters as $f) {
1394                         if ($f["type"] == "label") {
1395                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1396                                         label_add_article($id, $f["param"], $owner_uid);
1397                                 }
1398                         }
1399                 }
1400         }
1401
1402         function make_guid_from_title($title) {
1403                 return preg_replace("/[ \"\',.:;]/", "-",
1404                         mb_strtolower(strip_tags($title), 'utf-8'));
1405         }
1406
1407         /* function verify_feed_xml($feed_data) {
1408                 libxml_use_internal_errors(true);
1409                 $doc = new DOMDocument();
1410                 $doc->loadXML($feed_data);
1411                 $error = libxml_get_last_error();
1412                 libxml_clear_errors();
1413                 return $error;
1414         } */
1415
1416         function housekeeping_common($debug) {
1417                 expire_cached_files($debug);
1418                 expire_lock_files($debug);
1419                 expire_error_log($debug);
1420
1421                 $count = update_feedbrowser_cache();
1422                 _debug("Feedbrowser updated, $count feeds processed.");
1423
1424                 purge_orphans( true);
1425                 $rc = cleanup_tags( 14, 50000);
1426
1427                 _debug("Cleaned $rc cached tags.");
1428
1429                 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1430
1431         }
1432 ?>