include/rssfuncs.php

   1 <?php
   2         define('DAEMON_UPDATE_LOGIN_LIMIT', 30);
   3         define('DAEMON_FEED_LIMIT', 100);
   4         define('DAEMON_SLEEP_INTERVAL', 120);
   5
   6         function update_feedbrowser_cache($link) {
   7
   8                 $result = db_query($link, "SELECT feed_url, site_url, title, COUNT(id) AS subscribers
   9                         FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
  10                                 WHERE tf.feed_url = ttrss_feeds.feed_url
  11                                 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
  12                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  13
  14                 db_query($link, "BEGIN");
  15
  16                 db_query($link, "DELETE FROM ttrss_feedbrowser_cache");
  17
  18                 $count = 0;
  19
  20                 while ($line = db_fetch_assoc($result)) {
  21                         $subscribers = db_escape_string($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                         $tmp_result = db_query($link, "SELECT subscribers FROM
  27                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  28
  29                         if (db_num_rows($tmp_result) == 0) {
  30
  31                                 db_query($link, "INSERT INTO ttrss_feedbrowser_cache
  32                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  33                                                 '$site_url', '$title', '$subscribers')");
  34
  35                                 ++$count;
  36
  37                         }
  38
  39                 }
  40
  41                 db_query($link, "COMMIT");
  42
  43                 return $count;
  44
  45         }
  46
  47
  48         /**
  49          * Update a feed batch.
  50          * Used by daemons to update n feeds by run.
  51          * Only update feed needing a update, and not being processed
  52          * by another process.
  53          *
  54          * @param mixed $link Database link
  55          * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
  56          * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
  57          * @param boolean $debug Set to false to disable debug output. Default to true.
  58          * @return void
  59          */
  60         function update_daemon_common($link, $limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  61                 // Process all other feeds using last_updated and interval parameters
  62
  63                 define('PREFS_NO_CACHE', true);
  64
  65                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  66                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  67                         if (DB_TYPE == "pgsql") {
  68                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  69                         } else {
  70                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  71                         }
  72                 } else {
  73                         $login_thresh_qpart = "";
  74                 }
  75
  76                 // Test if the feed need a update (update interval exceded).
  77                 if (DB_TYPE == "pgsql") {
  78                         $update_limit_qpart = "AND ((
  79                                         ttrss_feeds.update_interval = 0
  80                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
  81                                 ) OR (
  82                                         ttrss_feeds.update_interval > 0
  83                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
  84                                 ) OR ttrss_feeds.last_updated IS NULL
  85                                 OR last_updated = '1970-01-01 00:00:00')";
  86                 } else {
  87                         $update_limit_qpart = "AND ((
  88                                         ttrss_feeds.update_interval = 0
  89                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
  90                                 ) OR (
  91                                         ttrss_feeds.update_interval > 0
  92                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
  93                                 ) OR ttrss_feeds.last_updated IS NULL
  94                                 OR last_updated = '1970-01-01 00:00:00')";
  95                 }
  96
  97                 // Test if feed is currently being updated by another process.
  98                 if (DB_TYPE == "pgsql") {
  99                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '5 minutes')";
 100                 } else {
 101                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 5 MINUTE))";
 102                 }
 103
 104                 // Test if there is a limit to number of updated feeds
 105                 $query_limit = "";
 106                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 107
 108                 $random_qpart = sql_random_function();
 109
 110                 // We search for feed needing update.
 111                 $result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id, ttrss_feeds.owner_uid,
 112                                 ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
 113                                 ttrss_feeds.update_interval
 114                         FROM
 115                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 116                         WHERE
 117                                 ttrss_feeds.owner_uid = ttrss_users.id
 118                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 119                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 120                                 $login_thresh_qpart $update_limit_qpart
 121                          $updstart_thresh_qpart
 122                         ORDER BY $random_qpart $query_limit");
 123
 124                 $user_prefs_cache = array();
 125
 126                 if($debug) _debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
 127
 128                 // Here is a little cache magic in order to minimize risk of double feed updates.
 129                 $feeds_to_update = array();
 130                 while ($line = db_fetch_assoc($result)) {
 131                         $feeds_to_update[$line['id']] = $line;
 132                 }
 133
 134                 // We update the feed last update started date before anything else.
 135                 // There is no lag due to feed contents downloads
 136                 // It prevent an other process to update the same feed.
 137                 $feed_ids = array_keys($feeds_to_update);
 138                 if($feed_ids) {
 139                         db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 140                                 WHERE id IN (%s)", implode(',', $feed_ids)));
 141                 }
 142
 143                 expire_cached_files($debug);
 144
 145                 // For each feed, we call the feed update function.
 146                 while ($line = array_pop($feeds_to_update)) {
 147
 148                         if($debug) _debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
 149
 150                         update_rss_feed($link, $line["id"], true);
 151
 152                         sleep(1); // prevent flood (FIXME make this an option?)
 153                 }
 154
 155                 // Send feed digests by email if needed.
 156                 send_headlines_digests($link, $debug);
 157
 158         } // function update_daemon_common
 159
 160         function fetch_twitter_rss($link, $url, $owner_uid) {
 161
 162                 require_once 'lib/tmhoauth/tmhOAuth.php';
 163                 require_once "lib/magpierss/rss_fetch.inc";
 164                 require_once 'lib/magpierss/rss_utils.inc';
 165
 166                 $result = db_query($link, "SELECT twitter_oauth FROM ttrss_users
 167                         WHERE id = $owner_uid");
 168
 169                 $access_token = json_decode(db_fetch_result($result, 0, 'twitter_oauth'), true);
 170                 $url_escaped = db_escape_string($url);
 171
 172                 if ($access_token) {
 173
 174                         $tmhOAuth = new tmhOAuth(array(
 175                                 'consumer_key'    => CONSUMER_KEY,
 176                                 'consumer_secret' => CONSUMER_SECRET,
 177                                 'user_token' => $access_token['oauth_token'],
 178                                 'user_secret' => $access_token['oauth_token_secret'],
 179                         ));
 180
 181                         $code = $tmhOAuth->request('GET', $url,
 182                                 convertUrlQuery(parse_url($url, PHP_URL_QUERY)));
 183
 184                         if ($code == 200) {
 185
 186                                 $content = $tmhOAuth->response['response'];
 187
 188                                 define('MAGPIE_CACHE_ON', false);
 189
 190                                 $rss = new MagpieRSS($content, MAGPIE_OUTPUT_ENCODING,
 191                                         MAGPIE_INPUT_ENCODING, MAGPIE_DETECT_ENCODING );
 192
 193                                 return $rss;
 194
 195                         } else {
 196
 197                                 db_query($link, "UPDATE ttrss_feeds
 198                                         SET last_error = 'OAuth authorization failed ($code).'
 199                                         WHERE feed_url = '$url_escaped' AND owner_uid = $owner_uid");
 200                         }
 201
 202                 } else {
 203
 204                         db_query($link, "UPDATE ttrss_feeds
 205                                 SET last_error = 'OAuth information not found.'
 206                                 WHERE feed_url = '$url_escaped' AND owner_uid = $owner_uid");
 207
 208                         return false;
 209                 }
 210         }
 211
 212         function update_rss_feed($link, $feed, $ignore_daemon = false, $no_cache = false,
 213                 $override_url = false) {
 214
 215                 require_once "lib/simplepie/simplepie.inc";
 216                 require_once "lib/magpierss/rss_fetch.inc";
 217                 require_once 'lib/magpierss/rss_utils.inc';
 218
 219                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 220
 221                 if (!$_REQUEST["daemon"] && !$ignore_daemon) {
 222                         return false;
 223                 }
 224
 225                 if ($debug_enabled) {
 226                         _debug("update_rss_feed: start");
 227                 }
 228
 229                 if (!$ignore_daemon) {
 230
 231                         if (DB_TYPE == "pgsql") {
 232                                         $updstart_thresh_qpart = "(ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '120 seconds')";
 233                                 } else {
 234                                         $updstart_thresh_qpart = "(ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 120 SECOND))";
 235                                 }
 236
 237                         $result = db_query($link, "SELECT id,update_interval,auth_login,
 238                                 auth_pass,cache_images,update_method,last_updated
 239                                 FROM ttrss_feeds WHERE id = '$feed' AND $updstart_thresh_qpart");
 240
 241                 } else {
 242
 243                         $result = db_query($link, "SELECT id,update_interval,auth_login,
 244                                 feed_url,auth_pass,cache_images,update_method,last_updated,
 245                                 mark_unread_on_update, owner_uid, update_on_checksum_change,
 246                                 pubsub_state
 247                                 FROM ttrss_feeds WHERE id = '$feed'");
 248
 249                 }
 250
 251                 if (db_num_rows($result) == 0) {
 252                         if ($debug_enabled) {
 253                                 _debug("update_rss_feed: feed $feed NOT FOUND/SKIPPED");
 254                         }
 255                         return false;
 256                 }
 257
 258                 $update_method = db_fetch_result($result, 0, "update_method");
 259                 $last_updated = db_fetch_result($result, 0, "last_updated");
 260                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 261                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 262                         0, "mark_unread_on_update"));
 263                 $update_on_checksum_change = sql_bool_to_bool(db_fetch_result($result,
 264                         0, "update_on_checksum_change"));
 265                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 266
 267                 db_query($link, "UPDATE ttrss_feeds SET last_update_started = NOW()
 268                         WHERE id = '$feed'");
 269
 270                 $auth_login = db_fetch_result($result, 0, "auth_login");
 271                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 272
 273                 if ($update_method == 0)
 274                         $update_method = DEFAULT_UPDATE_METHOD + 1;
 275
 276                 // 1 - Magpie
 277                 // 2 - SimplePie
 278                 // 3 - Twitter OAuth
 279
 280                 if ($update_method == 2)
 281                         $use_simplepie = true;
 282                 else
 283                         $use_simplepie = false;
 284
 285                 if ($debug_enabled) {
 286                         _debug("update method: $update_method (feed setting: $update_method) (use simplepie: $use_simplepie)\n");
 287                 }
 288
 289                 if ($update_method == 1) {
 290                         $auth_login = urlencode($auth_login);
 291                         $auth_pass = urlencode($auth_pass);
 292                 }
 293
 294                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 295                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 296
 297                 $feed = db_escape_string($feed);
 298
 299                 if ($auth_login && $auth_pass ){
 300                         $url_parts = array();
 301                         preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
 302
 303                         if ($url_parts[1] && $url_parts[2]) {
 304                                 $fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
 305                         }
 306
 307                 }
 308
 309                 if ($override_url)
 310                         $fetch_url = $override_url;
 311
 312                 if ($debug_enabled) {
 313                         _debug("update_rss_feed: fetching [$fetch_url]...");
 314                 }
 315
 316                 // Ignore cache if new feed or manual update.
 317                 $cache_age = (is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
 318                         -1 : get_feed_update_interval($link, $feed) * 60;
 319
 320                 if ($update_method == 3) {
 321                         $rss = fetch_twitter_rss($link, $fetch_url, $owner_uid);
 322                 } else if ($update_method == 1) {
 323
 324                         define('MAGPIE_CACHE_AGE', $cache_age);
 325                         define('MAGPIE_CACHE_ON', !$no_cache);
 326                         define('MAGPIE_FETCH_TIME_OUT', 60);
 327                         define('MAGPIE_CACHE_DIR', CACHE_DIR . "/magpie");
 328
 329                         $rss = @fetch_rss($fetch_url);
 330                 } else {
 331                         $simplepie_cache_dir = CACHE_DIR . "/simplepie";
 332
 333                         if (!is_dir($simplepie_cache_dir)) {
 334                                 mkdir($simplepie_cache_dir);
 335                         }
 336
 337                         $rss = new SimplePie();
 338                         $rss->set_useragent(SELF_USER_AGENT);
 339 #                       $rss->set_timeout(10);
 340                         $rss->set_feed_url($fetch_url);
 341                         $rss->set_output_encoding('UTF-8');
 342                         //$rss->force_feed(true);
 343
 344                         if ($debug_enabled) {
 345                                 _debug("feed update interval (sec): " .
 346                                         get_feed_update_interval($link, $feed)*60);
 347                         }
 348
 349                         $rss->enable_cache(!$no_cache);
 350
 351                         if (!$no_cache) {
 352                                 $rss->set_cache_location($simplepie_cache_dir);
 353                                 $rss->set_cache_duration($cache_age);
 354                         }
 355
 356                         $rss->init();
 357                 }
 358
 359 //              print_r($rss);
 360
 361                 if ($debug_enabled) {
 362                         _debug("update_rss_feed: fetch done, parsing...");
 363                 }
 364
 365                 $feed = db_escape_string($feed);
 366
 367                 if ($update_method == 2) {
 368                         $fetch_ok = !$rss->error();
 369                 } else {
 370                         $fetch_ok = !!$rss;
 371                 }
 372
 373                 if ($fetch_ok) {
 374
 375                         if ($debug_enabled) {
 376                                 _debug("update_rss_feed: processing feed data...");
 377                         }
 378
 379 //                      db_query($link, "BEGIN");
 380
 381                         if (DB_TYPE == "pgsql") {
 382                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 383                         } else {
 384                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 385                         }
 386
 387                         $result = db_query($link, "SELECT title,icon_url,site_url,owner_uid,
 388                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 389                                                 favicon_needs_check
 390                                 FROM ttrss_feeds WHERE id = '$feed'");
 391
 392                         $registered_title = db_fetch_result($result, 0, "title");
 393                         $orig_icon_url = db_fetch_result($result, 0, "icon_url");
 394                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 395                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 396                                 "favicon_needs_check"));
 397
 398                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 399
 400                         if ($use_simplepie) {
 401                                 $site_url = db_escape_string(trim($rss->get_link()));
 402                         } else {
 403                                 $site_url = db_escape_string(trim($rss->channel["link"]));
 404                         }
 405
 406                         // weird, weird Magpie
 407                         if (!$use_simplepie) {
 408                                 if (!$site_url) $site_url = db_escape_string($rss->channel["link_"]);
 409                         }
 410
 411                         $site_url = rewrite_relative_url($fetch_url, $site_url);
 412                         $site_url = substr($site_url, 0, 250);
 413
 414                         if ($debug_enabled) {
 415                                 _debug("update_rss_feed: checking favicon...");
 416                         }
 417
 418                         if ($favicon_needs_check) {
 419                                 check_feed_favicon($site_url, $feed, $link);
 420
 421                                 db_query($link, "UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 422                                         WHERE id = '$feed'");
 423                         }
 424
 425                         if (!$registered_title || $registered_title == "[Unknown]") {
 426
 427                                 if ($use_simplepie) {
 428                                         $feed_title = db_escape_string($rss->get_title());
 429                                 } else {
 430                                         $feed_title = db_escape_string($rss->channel["title"]);
 431                                 }
 432
 433                                 if ($debug_enabled) {
 434                                         _debug("update_rss_feed: registering title: $feed_title");
 435                                 }
 436
 437                                 db_query($link, "UPDATE ttrss_feeds SET
 438                                         title = '$feed_title' WHERE id = '$feed'");
 439                         }
 440
 441                         if ($site_url && $orig_site_url != $site_url) {
 442                                 db_query($link, "UPDATE ttrss_feeds SET
 443                                         site_url = '$site_url' WHERE id = '$feed'");
 444                         }
 445
 446 //                      print "I: " . $rss->channel["image"]["url"];
 447
 448                         if (!$use_simplepie) {
 449                                 $icon_url = db_escape_string(trim($rss->image["url"]));
 450                         } else {
 451                                 $icon_url = db_escape_string(trim($rss->get_image_url()));
 452                         }
 453
 454                         $icon_url = rewrite_relative_url($fetch_url, $icon_url);
 455                         $icon_url = substr($icon_url, 0, 250);
 456
 457                         if ($icon_url && $orig_icon_url != $icon_url) {
 458                                 db_query($link, "UPDATE ttrss_feeds SET icon_url = '$icon_url' WHERE id = '$feed'");
 459                         }
 460
 461                         if ($debug_enabled) {
 462                                 _debug("update_rss_feed: loading filters...");
 463                         }
 464
 465                         $filters = load_filters($link, $feed, $owner_uid);
 466
 467 //                      if ($debug_enabled) {
 468 //                              print_r($filters);
 469 //                      }
 470
 471                         if ($use_simplepie) {
 472                                 $iterator = $rss->get_items();
 473                         } else {
 474                                 $iterator = $rss->items;
 475                                 if (!$iterator || !is_array($iterator)) $iterator = $rss->entries;
 476                                 if (!$iterator || !is_array($iterator)) $iterator = $rss;
 477                         }
 478
 479                         if (!is_array($iterator)) {
 480                                 /* db_query($link, "UPDATE ttrss_feeds
 481                                         SET last_error = 'Parse error: can\'t find any articles.'
 482                                         WHERE id = '$feed'"); */
 483
 484                                 // clear any errors and mark feed as updated if fetched okay
 485                                 // even if it's blank
 486
 487                                 if ($debug_enabled) {
 488                                         _debug("update_rss_feed: entry iterator is not an array, no articles?");
 489                                 }
 490
 491                                 db_query($link, "UPDATE ttrss_feeds
 492                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 493
 494                                 return; // no articles
 495                         }
 496
 497                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 498
 499                                 if ($debug_enabled) _debug("update_rss_feed: checking for PUSH hub...");
 500
 501                                 $feed_hub_url = false;
 502                                 if ($use_simplepie) {
 503                                         $links = $rss->get_links('hub');
 504
 505                                         if ($links && is_array($links)) {
 506                                                 foreach ($links as $l) {
 507                                                         $feed_hub_url = $l;
 508                                                         break;
 509                                                 }
 510                                         }
 511
 512                                 } else {
 513                                         $atom = $rss->channel['atom'];
 514
 515                                         if ($atom) {
 516                                                 if ($atom['link@rel'] == 'hub') {
 517                                                         $feed_hub_url = $atom['link@href'];
 518                                                 }
 519
 520                                                 if (!$feed_hub_url && $atom['link#'] > 1) {
 521                                                         for ($i = 2; $i <= $atom['link#']; $i++) {
 522                                                                 if ($atom["link#$i@rel"] == 'hub') {
 523                                                                         $feed_hub_url = $atom["link#$i@href"];
 524                                                                         break;
 525                                                                 }
 526                                                         }
 527                                                 }
 528                                         } else {
 529                                                 $feed_hub_url = $rss->channel['link_hub'];
 530                                         }
 531                                 }
 532
 533                                 if ($debug_enabled) _debug("update_rss_feed: feed hub url: $feed_hub_url");
 534
 535                                 if ($feed_hub_url && function_exists('curl_init') &&
 536                                         !ini_get("open_basedir")) {
 537
 538                                         require_once 'lib/pubsubhubbub/subscriber.php';
 539
 540                                         $callback_url = get_self_url_prefix() .
 541                                                 "/public.php?op=pubsub&id=$feed";
 542
 543                                         $s = new Subscriber($feed_hub_url, $callback_url);
 544
 545                                         $rc = $s->subscribe($fetch_url);
 546
 547                                         if ($debug_enabled)
 548                                                 _debug("update_rss_feed: feed hub url found, subscribe request sent.");
 549
 550                                         db_query($link, "UPDATE ttrss_feeds SET pubsub_state = 1
 551                                                 WHERE id = '$feed'");
 552                                 }
 553                         }
 554
 555                         if ($debug_enabled) {
 556                                 _debug("update_rss_feed: processing articles...");
 557                         }
 558
 559                         foreach ($iterator as $item) {
 560
 561                                 if ($_REQUEST['xdebug'] == 2) {
 562                                         print_r($item);
 563                                 }
 564
 565                                 if ($use_simplepie) {
 566                                         $entry_guid = $item->get_id();
 567                                         if (!$entry_guid) $entry_guid = $item->get_link();
 568                                         if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 569
 570                                 } else {
 571
 572                                         $entry_guid = $item["id"];
 573
 574                                         if (!$entry_guid) $entry_guid = $item["guid"];
 575                                         if (!$entry_guid) $entry_guid = $item["about"];
 576                                         if (!$entry_guid) $entry_guid = $item["link"];
 577                                         if (!$entry_guid) $entry_guid = make_guid_from_title($item["title"]);
 578                                 }
 579
 580                                 if ($debug_enabled) {
 581                                         _debug("update_rss_feed: guid $entry_guid");
 582                                 }
 583
 584                                 if (!$entry_guid) continue;
 585
 586                                 $entry_timestamp = "";
 587
 588                                 if ($use_simplepie) {
 589                                         $entry_timestamp = strtotime($item->get_date());
 590                                 } else {
 591                                         $rss_2_date = $item['pubdate'];
 592                                         $rss_1_date = $item['dc']['date'];
 593                                         $atom_date = $item['issued'];
 594                                         if (!$atom_date) $atom_date = $item['updated'];
 595
 596                                         if ($atom_date != "") $entry_timestamp = parse_w3cdtf($atom_date);
 597                                         if ($rss_1_date != "") $entry_timestamp = parse_w3cdtf($rss_1_date);
 598                                         if ($rss_2_date != "") $entry_timestamp = strtotime($rss_2_date);
 599
 600                                 }
 601
 602                                 if ($entry_timestamp == "" || $entry_timestamp == -1 || !$entry_timestamp) {
 603                                         $entry_timestamp = time();
 604                                         $no_orig_date = 'true';
 605                                 } else {
 606                                         $no_orig_date = 'false';
 607                                 }
 608
 609                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 610
 611                                 if ($debug_enabled) {
 612                                         _debug("update_rss_feed: date $entry_timestamp [$entry_timestamp_fmt]");
 613                                 }
 614
 615                                 if ($use_simplepie) {
 616                                         $entry_title = $item->get_title();
 617                                 } else {
 618                                         $entry_title = trim(strip_tags($item["title"]));
 619                                 }
 620
 621                                 if ($use_simplepie) {
 622                                         $entry_link = $item->get_link();
 623                                 } else {
 624                                         // strange Magpie workaround
 625                                         $entry_link = $item["link_"];
 626                                         if (!$entry_link) $entry_link = $item["link"];
 627                                 }
 628
 629                                 $entry_link = rewrite_relative_url($site_url, $entry_link);
 630
 631                                 if ($debug_enabled) {
 632                                         _debug("update_rss_feed: title $entry_title");
 633                                         _debug("update_rss_feed: link $entry_link");
 634                                 }
 635
 636                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 637
 638                                 $entry_link = strip_tags($entry_link);
 639
 640                                 if ($use_simplepie) {
 641                                         $entry_content = $item->get_content();
 642                                         if (!$entry_content) $entry_content = $item->get_description();
 643                                 } else {
 644                                         $entry_content = $item["content:escaped"];
 645
 646                                         if (!$entry_content) $entry_content = $item["content:encoded"];
 647                                         if (!$entry_content && is_array($entry_content)) $entry_content = $item["content"]["encoded"];
 648                                         if (!$entry_content) $entry_content = $item["content"];
 649
 650                                         if (is_array($entry_content)) $entry_content = $entry_content[0];
 651
 652                                         // Magpie bugs are getting ridiculous
 653                                         if (trim($entry_content) == "Array") $entry_content = false;
 654
 655                                         if (!$entry_content) $entry_content = $item["atom_content"];
 656                                         if (!$entry_content) $entry_content = $item["summary"];
 657
 658                                         if (!$entry_content ||
 659                                                 strlen($entry_content) < strlen($item["description"])) {
 660                                                         $entry_content = $item["description"];
 661                                         };
 662
 663                                         // WTF
 664                                         if (is_array($entry_content)) {
 665                                                 $entry_content = $entry_content["encoded"];
 666                                                 if (!$entry_content) $entry_content = $entry_content["escaped"];
 667                                         }
 668                                 }
 669
 670                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 671                                         $entry_content = cache_images($entry_content, $site_url, $debug_enabled);
 672
 673                                 if ($_REQUEST["xdebug"] == 2) {
 674                                         print "update_rss_feed: content: ";
 675                                         print $entry_content;
 676                                         print "\n";
 677                                 }
 678
 679                                 $entry_content_unescaped = $entry_content;
 680
 681                                 if ($use_simplepie) {
 682                                         $entry_comments = strip_tags($item->data["comments"]);
 683                                         if ($item->get_author()) {
 684                                                 $entry_author_item = $item->get_author();
 685                                                 $entry_author = $entry_author_item->get_name();
 686                                                 if (!$entry_author) $entry_author = $entry_author_item->get_email();
 687
 688                                                 $entry_author = db_escape_string($entry_author);
 689                                         }
 690                                 } else {
 691                                         $entry_comments = strip_tags($item["comments"]);
 692
 693                                         $entry_author = db_escape_string(strip_tags($item['dc']['creator']));
 694
 695                                         if ($item['author']) {
 696
 697                                                 if (is_array($item['author'])) {
 698
 699                                                         if (!$entry_author) {
 700                                                                 $entry_author = db_escape_string(strip_tags($item['author']['name']));
 701                                                         }
 702
 703                                                         if (!$entry_author) {
 704                                                                 $entry_author = db_escape_string(strip_tags($item['author']['email']));
 705                                                         }
 706                                                 }
 707
 708                                                 if (!$entry_author) {
 709                                                         $entry_author = db_escape_string(strip_tags($item['author']));
 710                                                 }
 711                                         }
 712                                 }
 713
 714                                 if (preg_match('/^[\t\n\r ]*$/', $entry_author)) $entry_author = '';
 715
 716                                 $entry_guid = db_escape_string(strip_tags($entry_guid));
 717                                 $entry_guid = mb_substr($entry_guid, 0, 250);
 718
 719                                 $result = db_query($link, "SELECT id FROM       ttrss_entries
 720                                         WHERE guid = '$entry_guid'");
 721
 722                                 $entry_content = db_escape_string($entry_content, false);
 723
 724                                 $content_hash = "SHA1:" . sha1(strip_tags($entry_content));
 725
 726                                 $entry_title = db_escape_string($entry_title);
 727                                 $entry_link = db_escape_string($entry_link);
 728                                 $entry_comments = mb_substr(db_escape_string($entry_comments), 0, 250);
 729                                 $entry_author = mb_substr($entry_author, 0, 250);
 730
 731                                 if ($use_simplepie) {
 732                                         $num_comments = 0; #FIXME#
 733                                 } else {
 734                                         $num_comments = db_escape_string($item["slash"]["comments"]);
 735                                 }
 736
 737                                 if (!$num_comments) $num_comments = 0;
 738
 739                                 if ($debug_enabled) {
 740                                         _debug("update_rss_feed: looking for tags [1]...");
 741                                 }
 742
 743                                 // parse <category> entries into tags
 744
 745                                 $additional_tags = array();
 746
 747                                 if ($use_simplepie) {
 748
 749                                         $additional_tags_src = $item->get_categories();
 750
 751                                         if (is_array($additional_tags_src)) {
 752                                                 foreach ($additional_tags_src as $tobj) {
 753                                                         array_push($additional_tags, $tobj->get_term());
 754                                                 }
 755                                         }
 756
 757                                         if ($debug_enabled) {
 758                                                 _debug("update_rss_feed: category tags:");
 759                                                 print_r($additional_tags);
 760                                         }
 761
 762                                 } else {
 763
 764                                         $t_ctr = $item['category#'];
 765
 766                                         if ($t_ctr == 0) {
 767                                                 $additional_tags = array();
 768                                         } else if ($t_ctr > 0) {
 769                                                 $additional_tags = array($item['category']);
 770
 771                                                 if ($item['category@term']) {
 772                                                         array_push($additional_tags, $item['category@term']);
 773                                                 }
 774
 775                                                 for ($i = 0; $i <= $t_ctr; $i++ ) {
 776                                                         if ($item["category#$i"]) {
 777                                                                 array_push($additional_tags, $item["category#$i"]);
 778                                                         }
 779
 780                                                         if ($item["category#$i@term"]) {
 781                                                                 array_push($additional_tags, $item["category#$i@term"]);
 782                                                         }
 783                                                 }
 784                                         }
 785
 786                                         // parse <dc:subject> elements
 787
 788                                         $t_ctr = $item['dc']['subject#'];
 789
 790                                         if ($t_ctr > 0) {
 791                                                 array_push($additional_tags, $item['dc']['subject']);
 792
 793                                                 for ($i = 0; $i <= $t_ctr; $i++ ) {
 794                                                         if ($item['dc']["subject#$i"]) {
 795                                                                 array_push($additional_tags, $item['dc']["subject#$i"]);
 796                                                         }
 797                                                 }
 798                                         }
 799                                 }
 800
 801                                 if ($debug_enabled) {
 802                                         _debug("update_rss_feed: looking for tags [2]...");
 803                                 }
 804
 805                                 /* taaaags */
 806                                 // <a href="..." rel="tag">Xorg</a>, //
 807
 808                                 $entry_tags = null;
 809
 810                                 preg_match_all("/<a.*?rel=['\"]tag['\"].*?\>([^<]+)<\/a>/i",
 811                                         $entry_content_unescaped, $entry_tags);
 812
 813                                 $entry_tags = $entry_tags[1];
 814
 815                                 $entry_tags = array_merge($entry_tags, $additional_tags);
 816                                 $entry_tags = array_unique($entry_tags);
 817
 818                                 for ($i = 0; $i < count($entry_tags); $i++)
 819                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 820
 821                                 if ($debug_enabled) {
 822                                         _debug("update_rss_feed: unfiltered tags found:");
 823                                         print_r($entry_tags);
 824                                 }
 825
 826                                 # sanitize content
 827
 828                                 $entry_content = sanitize_article_content($entry_content);
 829                                 $entry_title = sanitize_article_content($entry_title);
 830
 831                                 if ($debug_enabled) {
 832                                         _debug("update_rss_feed: done collecting data [TITLE:$entry_title]");
 833                                 }
 834
 835                                 db_query($link, "BEGIN");
 836
 837                                 if (db_num_rows($result) == 0) {
 838
 839                                         if ($debug_enabled) {
 840                                                 _debug("update_rss_feed: base guid not found");
 841                                         }
 842
 843                                         // base post entry does not exist, create it
 844
 845                                         $result = db_query($link,
 846                                                 "INSERT INTO ttrss_entries
 847                                                         (title,
 848                                                         guid,
 849                                                         link,
 850                                                         updated,
 851                                                         content,
 852                                                         content_hash,
 853                                                         no_orig_date,
 854                                                         date_updated,
 855                                                         date_entered,
 856                                                         comments,
 857                                                         num_comments,
 858                                                         author)
 859                                                 VALUES
 860                                                         ('$entry_title',
 861                                                         '$entry_guid',
 862                                                         '$entry_link',
 863                                                         '$entry_timestamp_fmt',
 864                                                         '$entry_content',
 865                                                         '$content_hash',
 866                                                         $no_orig_date,
 867                                                         NOW(),
 868                                                         NOW(),
 869                                                         '$entry_comments',
 870                                                         '$num_comments',
 871                                                         '$entry_author')");
 872                                 } else {
 873                                         // we keep encountering the entry in feeds, so we need to
 874                                         // update date_updated column so that we don't get horrible
 875                                         // dupes when the entry gets purged and reinserted again e.g.
 876                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 877
 878                                         $base_entry_id = db_fetch_result($result, 0, "id");
 879
 880                                         db_query($link, "UPDATE ttrss_entries SET date_updated = NOW()
 881                                                 WHERE id = '$base_entry_id'");
 882                                 }
 883
 884                                 // now it should exist, if not - bad luck then
 885
 886                                 $result = db_query($link, "SELECT
 887                                                 id,content_hash,no_orig_date,title,
 888                                                 ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
 889                                                 ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
 890                                                 num_comments
 891                                         FROM
 892                                                 ttrss_entries
 893                                         WHERE guid = '$entry_guid'");
 894
 895                                 $entry_ref_id = 0;
 896                                 $entry_int_id = 0;
 897
 898                                 if (db_num_rows($result) == 1) {
 899
 900                                         if ($debug_enabled) {
 901                                                 _debug("update_rss_feed: base guid found, checking for user record");
 902                                         }
 903
 904                                         // this will be used below in update handler
 905                                         $orig_content_hash = db_fetch_result($result, 0, "content_hash");
 906                                         $orig_title = db_fetch_result($result, 0, "title");
 907                                         $orig_num_comments = db_fetch_result($result, 0, "num_comments");
 908                                         $orig_date_updated = strtotime(db_fetch_result($result,
 909                                                 0, "date_updated"));
 910
 911                                         $ref_id = db_fetch_result($result, 0, "id");
 912                                         $entry_ref_id = $ref_id;
 913
 914                                         // check for user post link to main table
 915
 916                                         // do we allow duplicate posts with same GUID in different feeds?
 917                                         if (get_pref($link, "ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 918                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 919                                         } else {
 920                                                 $dupcheck_qpart = "";
 921                                         }
 922
 923                                         /* Collect article tags here so we could filter by them: */
 924
 925                                         $article_filters = get_article_filters($filters, $entry_title,
 926                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 927                                                 $entry_tags);
 928
 929                                         if ($debug_enabled) {
 930                                                 _debug("update_rss_feed: article filters: ");
 931                                                 if (count($article_filters) != 0) {
 932                                                         print_r($article_filters);
 933                                                 }
 934                                         }
 935
 936                                         if (find_article_filter($article_filters, "filter")) {
 937                                                 db_query($link, "COMMIT"); // close transaction in progress
 938                                                 continue;
 939                                         }
 940
 941                                         $score = calculate_article_score($article_filters);
 942
 943                                         if ($debug_enabled) {
 944                                                 _debug("update_rss_feed: initial score: $score");
 945                                         }
 946
 947                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 948                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 949                                                         $dupcheck_qpart";
 950
 951 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 952
 953                                         $result = db_query($link, $query);
 954
 955                                         // okay it doesn't exist - create user entry
 956                                         if (db_num_rows($result) == 0) {
 957
 958                                                 if ($debug_enabled) {
 959                                                         _debug("update_rss_feed: user record not found, creating...");
 960                                                 }
 961
 962                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
 963                                                         $unread = 'true';
 964                                                         $last_read_qpart = 'NULL';
 965                                                 } else {
 966                                                         $unread = 'false';
 967                                                         $last_read_qpart = 'NOW()';
 968                                                 }
 969
 970                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 971                                                         $marked = 'true';
 972                                                 } else {
 973                                                         $marked = 'false';
 974                                                 }
 975
 976                                                 if (find_article_filter($article_filters, 'publish')) {
 977                                                         $published = 'true';
 978                                                 } else {
 979                                                         $published = 'false';
 980                                                 }
 981
 982                                                 // N-grams
 983
 984                                                 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 985
 986                                                         $result = db_query($link, "SELECT COUNT(*) AS similar FROM
 987                                                                         ttrss_entries,ttrss_user_entries
 988                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 989                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 990                                                                         AND owner_uid = $owner_uid");
 991
 992                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 993
 994                                                         if ($debug_enabled) {
 995                                                                 _debug("update_rss_feed: N-gram similar results: $ngram_similar");
 996                                                         }
 997
 998                                                         if ($ngram_similar > 0) {
 999                                                                 $unread = 'false';
1000                                                         }
1001                                                 }
1002
1003                                                 $result = db_query($link,
1004                                                         "INSERT INTO ttrss_user_entries
1005                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
1006                                                                         published, score, tag_cache, label_cache, uuid)
1007                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
1008                                                                 $last_read_qpart, $marked, $published, '$score', '', '', '')");
1009
1010                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
1011                                                         $rss_link = get_self_url_prefix() .
1012                                                                 "/public.php?op=rss&id=-2&key=" .
1013                                                                 get_feed_access_key($link, -2, false, $owner_uid);
1014
1015                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
1016
1017                                                         $pubsub_result = $p->publish_update($rss_link);
1018                                                 }
1019
1020                                                 $result = db_query($link,
1021                                                         "SELECT int_id FROM ttrss_user_entries WHERE
1022                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
1023                                                                 feed_id = '$feed' LIMIT 1");
1024
1025                                                 if (db_num_rows($result) == 1) {
1026                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
1027                                                 }
1028                                         } else {
1029                                                 if ($debug_enabled) {
1030                                                         _debug("update_rss_feed: user record FOUND");
1031                                                 }
1032
1033                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
1034                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
1035                                         }
1036
1037                                         if ($debug_enabled) {
1038                                                 _debug("update_rss_feed: RID: $entry_ref_id, IID: $entry_int_id");
1039                                         }
1040
1041                                         $post_needs_update = false;
1042                                         $update_insignificant = false;
1043
1044                                         if ($orig_num_comments != $num_comments) {
1045                                                 $post_needs_update = true;
1046                                                 $update_insignificant = true;
1047                                         }
1048
1049                                         if ($content_hash != $orig_content_hash) {
1050                                                 $post_needs_update = true;
1051                                                 $update_insignificant = false;
1052                                         }
1053
1054                                         if (db_escape_string($orig_title) != $entry_title) {
1055                                                 $post_needs_update = true;
1056                                                 $update_insignificant = false;
1057                                         }
1058
1059                                         // if post needs update, update it and mark all user entries
1060                                         // linking to this post as updated
1061                                         if ($post_needs_update) {
1062
1063                                                 if (defined('DAEMON_EXTENDED_DEBUG')) {
1064                                                         _debug("update_rss_feed: post $entry_guid needs update...");
1065                                                 }
1066
1067 //                                              print "<!-- post $orig_title needs update : $post_needs_update -->";
1068
1069                                                 db_query($link, "UPDATE ttrss_entries
1070                                                         SET title = '$entry_title', content = '$entry_content',
1071                                                                 content_hash = '$content_hash',
1072                                                                 updated = '$entry_timestamp_fmt',
1073                                                                 num_comments = '$num_comments'
1074                                                         WHERE id = '$ref_id'");
1075
1076                                                 if (!$update_insignificant) {
1077                                                         if ($mark_unread_on_update) {
1078                                                                 db_query($link, "UPDATE ttrss_user_entries
1079                                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
1080                                                         } else if ($update_on_checksum_change) {
1081                                                                 db_query($link, "UPDATE ttrss_user_entries
1082                                                                         SET last_read = null WHERE ref_id = '$ref_id'
1083                                                                                 AND unread = false");
1084                                                         }
1085                                                 }
1086                                         }
1087                                 }
1088
1089                                 db_query($link, "COMMIT");
1090
1091                                 if ($debug_enabled) {
1092                                         _debug("update_rss_feed: assigning labels...");
1093                                 }
1094
1095                                 assign_article_to_labels($link, $entry_ref_id, $article_filters,
1096                                         $owner_uid);
1097
1098                                 if ($debug_enabled) {
1099                                         _debug("update_rss_feed: looking for enclosures...");
1100                                 }
1101
1102                                 // enclosures
1103
1104                                 $enclosures = array();
1105
1106                                 if ($use_simplepie) {
1107                                         $encs = $item->get_enclosures();
1108
1109                                         if (is_array($encs)) {
1110                                                 foreach ($encs as $e) {
1111                                                         $e_item = array(
1112                                                                 $e->link, $e->type, $e->length);
1113
1114                                                         array_push($enclosures, $e_item);
1115                                                 }
1116                                         }
1117
1118                                 } else {
1119                                         // <enclosure>
1120
1121                                         $e_ctr = $item['enclosure#'];
1122
1123                                         if ($e_ctr > 0) {
1124                                                 $e_item = array($item['enclosure@url'],
1125                                                         $item['enclosure@type'],
1126                                                         $item['enclosure@length']);
1127
1128                                                 array_push($enclosures, $e_item);
1129
1130                                                 for ($i = 0; $i <= $e_ctr; $i++ ) {
1131
1132                                                         if ($item["enclosure#$i@url"]) {
1133                                                                 $e_item = array($item["enclosure#$i@url"],
1134                                                                         $item["enclosure#$i@type"],
1135                                                                         $item["enclosure#$i@length"]);
1136                                                                 array_push($enclosures, $e_item);
1137                                                         }
1138                                                 }
1139                                         }
1140
1141                                         // <media:content>
1142                                         // can there be many of those? yes -fox
1143
1144                                         $m_ctr = $item['media']['content#'];
1145
1146                                         if ($m_ctr > 0) {
1147                                                 $e_item = array($item['media']['content@url'],
1148                                                         $item['media']['content@medium'],
1149                                                         $item['media']['content@length']);
1150
1151                                                 array_push($enclosures, $e_item);
1152
1153                                                 for ($i = 0; $i <= $m_ctr; $i++ ) {
1154
1155                                                         if ($item["media"]["content#$i@url"]) {
1156                                                                 $e_item = array($item["media"]["content#$i@url"],
1157                                                                         $item["media"]["content#$i@medium"],
1158                                                                         $item["media"]["content#$i@length"]);
1159                                                                 array_push($enclosures, $e_item);
1160                                                         }
1161                                                 }
1162
1163                                         }
1164                                 }
1165
1166
1167                                 if ($debug_enabled) {
1168                                         _debug("update_rss_feed: article enclosures:");
1169                                         print_r($enclosures);
1170                                 }
1171
1172                                 db_query($link, "BEGIN");
1173
1174                                 foreach ($enclosures as $enc) {
1175                                         $enc_url = db_escape_string($enc[0]);
1176                                         $enc_type = db_escape_string($enc[1]);
1177                                         $enc_dur = db_escape_string($enc[2]);
1178
1179                                         $result = db_query($link, "SELECT id FROM ttrss_enclosures
1180                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1181
1182                                         if (db_num_rows($result) == 0) {
1183                                                 db_query($link, "INSERT INTO ttrss_enclosures
1184                                                         (content_url, content_type, title, duration, post_id) VALUES
1185                                                         ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
1186                                         }
1187                                 }
1188
1189                                 db_query($link, "COMMIT");
1190
1191                                 // check for manual tags (we have to do it here since they're loaded from filters)
1192
1193                                 foreach ($article_filters as $f) {
1194                                         if ($f[0] == "tag") {
1195
1196                                                 $manual_tags = trim_array(explode(",", $f[1]));
1197
1198                                                 foreach ($manual_tags as $tag) {
1199                                                         if (tag_is_valid($tag)) {
1200                                                                 array_push($entry_tags, $tag);
1201                                                         }
1202                                                 }
1203                                         }
1204                                 }
1205
1206                                 // Skip boring tags
1207
1208                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref($link,
1209                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1210
1211                                 $filtered_tags = array();
1212                                 $tags_to_cache = array();
1213
1214                                 if ($entry_tags && is_array($entry_tags)) {
1215                                         foreach ($entry_tags as $tag) {
1216                                                 if (array_search($tag, $boring_tags) === false) {
1217                                                         array_push($filtered_tags, $tag);
1218                                                 }
1219                                         }
1220                                 }
1221
1222                                 $filtered_tags = array_unique($filtered_tags);
1223
1224                                 if ($debug_enabled) {
1225                                         _debug("update_rss_feed: filtered article tags:");
1226                                         print_r($filtered_tags);
1227                                 }
1228
1229                                 // Save article tags in the database
1230
1231                                 if (count($filtered_tags) > 0) {
1232
1233                                         db_query($link, "BEGIN");
1234
1235                                         foreach ($filtered_tags as $tag) {
1236
1237                                                 $tag = sanitize_tag($tag);
1238                                                 $tag = db_escape_string($tag);
1239
1240                                                 if (!tag_is_valid($tag)) continue;
1241
1242                                                 $result = db_query($link, "SELECT id FROM ttrss_tags
1243                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1244                                                         owner_uid = '$owner_uid' LIMIT 1");
1245
1246                                                         if ($result && db_num_rows($result) == 0) {
1247
1248                                                                 db_query($link, "INSERT INTO ttrss_tags
1249                                                                         (owner_uid,tag_name,post_int_id)
1250                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1251                                                         }
1252
1253                                                 array_push($tags_to_cache, $tag);
1254                                         }
1255
1256                                         /* update the cache */
1257
1258                                         $tags_to_cache = array_unique($tags_to_cache);
1259
1260                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1261
1262                                         db_query($link, "UPDATE ttrss_user_entries
1263                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1264                                                 AND owner_uid = $owner_uid");
1265
1266                                         db_query($link, "COMMIT");
1267                                 }
1268
1269                                 if ($debug_enabled) {
1270                                         _debug("update_rss_feed: article processed");
1271                                 }
1272                         }
1273
1274                         if (!$last_updated) {
1275                                 if ($debug_enabled) {
1276                                         _debug("update_rss_feed: new feed, catching it up...");
1277                                 }
1278                                 catchup_feed($link, $feed, false, $owner_uid);
1279                         }
1280
1281                         if ($debug_enabled) {
1282                                 _debug("purging feed...");
1283                         }
1284
1285                         purge_feed($link, $feed, 0, $debug_enabled);
1286
1287                         db_query($link, "UPDATE ttrss_feeds
1288                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1289
1290 //                      db_query($link, "COMMIT");
1291
1292                 } else {
1293
1294                         if ($use_simplepie) {
1295                                 $error_msg = mb_substr($rss->error(), 0, 250);
1296                         } else {
1297                                 $error_msg = mb_substr(magpie_error(), 0, 250);
1298                         }
1299
1300                         if ($debug_enabled) {
1301                                 _debug("update_rss_feed: error fetching feed: $error_msg");
1302                         }
1303
1304                         $error_msg = db_escape_string($error_msg);
1305
1306                         db_query($link,
1307                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1308                                         last_updated = NOW() WHERE id = '$feed'");
1309                 }
1310
1311                 if ($use_simplepie) {
1312                         unset($rss);
1313                 }
1314
1315                 if ($debug_enabled) {
1316                         _debug("update_rss_feed: done");
1317                 }
1318
1319         }
1320
1321         function cache_images($html, $site_url, $debug) {
1322                 $cache_dir = CACHE_DIR . "/images";
1323
1324                 libxml_use_internal_errors(true);
1325
1326                 $charset_hack = '<head>
1327                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1328                 </head>';
1329
1330                 $doc = new DOMDocument();
1331                 $doc->loadHTML($charset_hack . $html);
1332                 $xpath = new DOMXPath($doc);
1333
1334                 $entries = $xpath->query('(//img[@src])');
1335
1336                 foreach ($entries as $entry) {
1337                         if ($entry->hasAttribute('src')) {
1338                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1339
1340                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1341
1342                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1343
1344                                 if (!file_exists($local_filename)) {
1345                                         $file_content = fetch_file_contents($src);
1346
1347                                         if ($file_content && strlen($file_content) > 1024) {
1348                                                 file_put_contents($local_filename, $file_content);
1349                                         }
1350                                 }
1351
1352                                 if (file_exists($local_filename)) {
1353                                         $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1354                                                 base64_encode($src));
1355                                 }
1356                         }
1357                 }
1358
1359                 $node = $doc->getElementsByTagName('body')->item(0);
1360
1361                 return $doc->saveXML($node, LIBXML_NOEMPTYTAG);
1362         }
1363
1364         function expire_cached_files($debug) {
1365                 foreach (array("magpie", "simplepie", "images", "export") as $dir) {
1366                         $cache_dir = CACHE_DIR . "/$dir";
1367
1368                         if ($debug) _debug("Expiring $cache_dir");
1369
1370                         $num_deleted = 0;
1371
1372                         if (is_writable($cache_dir)) {
1373                                 $files = glob("$cache_dir/*");
1374
1375                                 if ($files)
1376                                         foreach ($files as $file) {
1377                                                 if (time() - filemtime($file) > 86400*7) {
1378                                                         unlink($file);
1379
1380                                                         ++$num_deleted;
1381                                                 }
1382                                         }
1383                                 }
1384
1385                         if ($debug) _debug("Removed $num_deleted files.");
1386                 }
1387         }
1388
1389         /**
1390         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1391         * Returns the url query as associative array
1392         *
1393         * @param    string    query
1394         * @return    array    params
1395         */
1396         function convertUrlQuery($query) {
1397                 $queryParts = explode('&', $query);
1398
1399                 $params = array();
1400
1401                 foreach ($queryParts as $param) {
1402                         $item = explode('=', $param);
1403                         $params[$item[0]] = $item[1];
1404                 }
1405
1406                 return $params;
1407         }
1408 ?>