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 calculate_article_hash($article, $pluginhost) {
   8                 $tmp = "";
   9
  10                 foreach ($article as $k => $v) {
  11                         if ($k != "feed" && isset($v)) {
  12                                 $tmp .= sha1("$k:" . (is_array($v) ? implode(",", $v) : $v));
  13                         }
  14                 }
  15
  16                 return sha1(implode(",", $pluginhost->get_plugin_names()) . $tmp);
  17         }
  18
  19         function update_feedbrowser_cache() {
  20
  21                 $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
  22                         FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
  23                                 WHERE tf.feed_url = ttrss_feeds.feed_url
  24                                 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
  25                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  26
  27                 db_query("BEGIN");
  28
  29                 db_query("DELETE FROM ttrss_feedbrowser_cache");
  30
  31                 $count = 0;
  32
  33                 while ($line = db_fetch_assoc($result)) {
  34                         $subscribers = db_escape_string($line["subscribers"]);
  35                         $feed_url = db_escape_string($line["feed_url"]);
  36                         $title = db_escape_string($line["title"]);
  37                         $site_url = db_escape_string($line["site_url"]);
  38
  39                         $tmp_result = db_query("SELECT subscribers FROM
  40                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  41
  42                         if (db_num_rows($tmp_result) == 0) {
  43
  44                                 db_query("INSERT INTO ttrss_feedbrowser_cache
  45                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  46                                                 '$site_url', '$title', '$subscribers')");
  47
  48                                 ++$count;
  49
  50                         }
  51
  52                 }
  53
  54                 db_query("COMMIT");
  55
  56                 return $count;
  57
  58         }
  59
  60
  61         /**
  62          * Update a feed batch.
  63          * Used by daemons to update n feeds by run.
  64          * Only update feed needing a update, and not being processed
  65          * by another process.
  66          *
  67          * @param mixed $link Database link
  68          * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
  69          * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
  70          * @param boolean $debug Set to false to disable debug output. Default to true.
  71          * @return void
  72          */
  73         function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  74                 // Process all other feeds using last_updated and interval parameters
  75
  76                 $schema_version = get_schema_version();
  77
  78                 if ($schema_version != SCHEMA_VERSION) {
  79                         die("Schema version is wrong, please upgrade the database.\n");
  80                 }
  81
  82                 define('PREFS_NO_CACHE', true);
  83
  84                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  85                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  86                         if (DB_TYPE == "pgsql") {
  87                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  88                         } else {
  89                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  90                         }
  91                 } else {
  92                         $login_thresh_qpart = "";
  93                 }
  94
  95                 // Test if the feed need a update (update interval exceeded).
  96                 if (DB_TYPE == "pgsql") {
  97                         $update_limit_qpart = "AND ((
  98                                         ttrss_feeds.update_interval = 0
  99                                         AND ttrss_user_prefs.value != '-1'
 100                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
 101                                 ) OR (
 102                                         ttrss_feeds.update_interval > 0
 103                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
 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                 } else {
 109                         $update_limit_qpart = "AND ((
 110                                         ttrss_feeds.update_interval = 0
 111                                         AND ttrss_user_prefs.value != '-1'
 112                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 113                                 ) OR (
 114                                         ttrss_feeds.update_interval > 0
 115                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 116                                 ) OR (ttrss_feeds.last_updated IS NULL
 117                                         AND ttrss_user_prefs.value != '-1')
 118                                 OR (last_updated = '1970-01-01 00:00:00'
 119                                         AND ttrss_user_prefs.value != '-1'))";
 120                 }
 121
 122                 // Test if feed is currently being updated by another process.
 123                 if (DB_TYPE == "pgsql") {
 124                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 125                 } else {
 126                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 127                 }
 128
 129                 // Test if there is a limit to number of updated feeds
 130                 $query_limit = "";
 131                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 132
 133                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 134                         FROM
 135                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 136                         WHERE
 137                                 ttrss_feeds.owner_uid = ttrss_users.id
 138                                 AND ttrss_user_prefs.profile IS NULL
 139                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 140                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 141                                 $login_thresh_qpart $update_limit_qpart
 142                                 $updstart_thresh_qpart
 143                                 ORDER BY last_updated $query_limit";
 144
 145                 // We search for feed needing update.
 146                 $result = db_query($query);
 147
 148                 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 149
 150                 // Here is a little cache magic in order to minimize risk of double feed updates.
 151                 $feeds_to_update = array();
 152                 while ($line = db_fetch_assoc($result)) {
 153                         array_push($feeds_to_update, db_escape_string($line['feed_url']));
 154                 }
 155
 156                 // We update the feed last update started date before anything else.
 157                 // There is no lag due to feed contents downloads
 158                 // It prevent an other process to update the same feed.
 159
 160                 if(count($feeds_to_update) > 0) {
 161                         $feeds_quoted = array();
 162
 163                         foreach ($feeds_to_update as $feed) {
 164                                 array_push($feeds_quoted, "'" . db_escape_string($feed) . "'");
 165                         }
 166
 167                         db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 168                                 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
 169                 }
 170
 171                 $nf = 0;
 172                 $bstarted = microtime(true);
 173
 174                 // For each feed, we call the feed update function.
 175                 foreach ($feeds_to_update as $feed) {
 176                         if($debug) _debug("Base feed: $feed");
 177
 178                         //update_rss_feed($line["id"], true);
 179
 180                         // since we have the data cached, we can deal with other feeds with the same url
 181
 182                         $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 183                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 184                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 185                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 186                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 187                                 ttrss_user_prefs.profile IS NULL AND
 188                                 feed_url = '".db_escape_string($feed)."' AND
 189                                 (ttrss_feeds.update_interval > 0 OR
 190                                         ttrss_user_prefs.value != '-1')
 191                                 $login_thresh_qpart
 192                         ORDER BY ttrss_feeds.id $query_limit");
 193
 194                         if (db_num_rows($tmp_result) > 0) {
 195                                 $rss = false;
 196
 197                                 while ($tline = db_fetch_assoc($tmp_result)) {
 198                                         if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 199
 200                                         $fstarted = microtime(true);
 201                                         $rss = update_rss_feed($tline["id"], true, false);
 202                                         _debug_suppress(false);
 203
 204                                         _debug(sprintf("    %.4f (sec)", microtime(true) - $fstarted));
 205
 206                                         ++$nf;
 207                                 }
 208                         }
 209                 }
 210
 211                 if ($nf > 0) {
 212                         _debug(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
 213                                 microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
 214                 }
 215
 216                 require_once "digest.php";
 217
 218                 // Send feed digests by email if needed.
 219                 send_headlines_digests($debug);
 220
 221                 return $nf;
 222
 223         } // function update_daemon_common
 224
 225         // ignore_daemon is not used
 226         function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false, $rss = false) {
 227
 228                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 229
 230                 _debug_suppress(!$debug_enabled);
 231                 _debug("start", $debug_enabled);
 232
 233                 $result = db_query("SELECT id,update_interval,auth_login,
 234                         feed_url,auth_pass,cache_images,
 235                         mark_unread_on_update, owner_uid,
 236                         pubsub_state, auth_pass_encrypted,
 237                         (SELECT max(date_entered) FROM
 238                                 ttrss_entries, ttrss_user_entries where ref_id = id AND feed_id = '$feed') AS last_article_timestamp
 239                         FROM ttrss_feeds WHERE id = '$feed'");
 240
 241                 if (db_num_rows($result) == 0) {
 242                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 243                         return false;
 244                 }
 245
 246                 $last_article_timestamp = @strtotime(db_fetch_result($result, 0, "last_article_timestamp"));
 247
 248                 if (defined('_DISABLE_HTTP_304'))
 249                         $last_article_timestamp = 0;
 250
 251                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 252                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 253                         0, "mark_unread_on_update"));
 254                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 255                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 256                         0, "auth_pass_encrypted"));
 257
 258                 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
 259                         WHERE id = '$feed'");
 260
 261                 $auth_login = db_fetch_result($result, 0, "auth_login");
 262                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 263
 264                 if ($auth_pass_encrypted) {
 265                         require_once "crypt.php";
 266                         $auth_pass = decrypt_string($auth_pass);
 267                 }
 268
 269                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 270                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 271
 272                 $feed = db_escape_string($feed);
 273
 274                 $date_feed_processed = date('Y-m-d H:i');
 275
 276                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 277
 278                 $pluginhost = new PluginHost();
 279                 $pluginhost->set_debug($debug_enabled);
 280                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 281
 282                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 283                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 284                 $pluginhost->load_data();
 285
 286                 if ($rss && is_object($rss) && get_class($rss) == "FeedParser") {
 287                         _debug("using previously initialized parser object");
 288                 } else {
 289                         $rss_hash = false;
 290
 291                         $force_refetch = isset($_REQUEST["force_refetch"]);
 292
 293                         foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
 294                                 $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, $last_article_timestamp, $auth_login, $auth_pass);
 295                         }
 296
 297                         // try cache
 298                         if (!$feed_data &&
 299                                 file_exists($cache_filename) &&
 300                                 is_readable($cache_filename) &&
 301                                 !$auth_login && !$auth_pass &&
 302                                 filemtime($cache_filename) > time() - 30) {
 303
 304                                 _debug("using local cache [$cache_filename].", $debug_enabled);
 305
 306                                 @$feed_data = file_get_contents($cache_filename);
 307
 308                                 if ($feed_data) {
 309                                         $rss_hash = sha1($feed_data);
 310                                 }
 311
 312                         } else {
 313                                 _debug("local cache will not be used for this feed", $debug_enabled);
 314                         }
 315
 316                         // fetch feed from source
 317                         if (!$feed_data) {
 318                                 _debug("fetching [$fetch_url]...", $debug_enabled);
 319                                 _debug("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $last_article_timestamp), $debug_enabled);
 320
 321                                 $feed_data = fetch_file_contents($fetch_url, false,
 322                                         $auth_login, $auth_pass, false,
 323                                         $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 324                                         $force_refetch ? 0 : $last_article_timestamp);
 325
 326                                 global $fetch_curl_used;
 327
 328                                 if (!$fetch_curl_used) {
 329                                         $tmp = @gzdecode($feed_data);
 330
 331                                         if ($tmp) $feed_data = $tmp;
 332                                 }
 333
 334                                 $feed_data = trim($feed_data);
 335
 336                                 _debug("fetch done.", $debug_enabled);
 337
 338                                 /* if ($feed_data) {
 339                                         $error = verify_feed_xml($feed_data);
 340
 341                                         if ($error) {
 342                                                 _debug("error verifying XML, code: " . $error->code, $debug_enabled);
 343
 344                                                 if ($error->code == 26) {
 345                                                         _debug("got error 26, trying to decode entities...", $debug_enabled);
 346
 347                                                         $feed_data = html_entity_decode($feed_data, ENT_COMPAT, 'UTF-8');
 348
 349                                                         $error = verify_feed_xml($feed_data);
 350
 351                                                         if ($error) $feed_data = '';
 352                                                 }
 353                                         }
 354                                 } */
 355
 356                                 // cache vanilla feed data for re-use
 357                                 if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 358                                         $new_rss_hash = sha1($feed_data);
 359
 360                                         if ($new_rss_hash != $rss_hash) {
 361                                                 _debug("saving $cache_filename", $debug_enabled);
 362                                                 @file_put_contents($cache_filename, $feed_data);
 363                                         }
 364                                 }
 365                         }
 366
 367                         if (!$feed_data) {
 368                                 global $fetch_last_error;
 369                                 global $fetch_last_error_code;
 370
 371                                 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 372
 373                                 $error_escaped = '';
 374
 375                                 // If-Modified-Since
 376                                 if ($fetch_last_error_code != 304) {
 377                                         $error_escaped = db_escape_string($fetch_last_error);
 378                                 } else {
 379                                         _debug("source claims data not modified, nothing to do.", $debug_enabled);
 380                                 }
 381
 382                                 db_query(
 383                                         "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 384                                                 last_updated = NOW() WHERE id = '$feed'");
 385
 386                                 return;
 387                         }
 388                 }
 389
 390                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 391                         $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
 392                 }
 393
 394                 // set last update to now so if anything *simplepie* crashes later we won't be
 395                 // continuously failing on the same feed
 396                 //db_query("UPDATE ttrss_feeds SET last_updated = NOW() WHERE id = '$feed'");
 397
 398                 if (!$rss) {
 399                         $rss = new FeedParser($feed_data);
 400                         $rss->init();
 401                 }
 402
 403                 if (DETECT_ARTICLE_LANGUAGE) {
 404                         require_once "lib/languagedetect/LanguageDetect.php";
 405
 406                         $lang = new Text_LanguageDetect();
 407                         $lang->setNameMode(2);
 408                 }
 409
 410 //              print_r($rss);
 411
 412                 $feed = db_escape_string($feed);
 413
 414                 if (!$rss->error()) {
 415
 416                         // We use local pluginhost here because we need to load different per-user feed plugins
 417                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 418
 419                         _debug("processing feed data...", $debug_enabled);
 420
 421 //                      db_query("BEGIN");
 422
 423                         if (DB_TYPE == "pgsql") {
 424                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 425                         } else {
 426                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 427                         }
 428
 429                         $result = db_query("SELECT title,site_url,owner_uid,favicon_avg_color,
 430                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 431                                                 favicon_needs_check
 432                                 FROM ttrss_feeds WHERE id = '$feed'");
 433
 434                         $registered_title = db_fetch_result($result, 0, "title");
 435                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 436                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 437                                 "favicon_needs_check"));
 438                         $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
 439
 440                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 441
 442                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 443
 444                         _debug("site_url: $site_url", $debug_enabled);
 445                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 446
 447                         if ($favicon_needs_check || $force_refetch) {
 448
 449                                 /* terrible hack: if we crash on floicon shit here, we won't check
 450                                  * the icon avgcolor again (unless the icon got updated) */
 451
 452                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 453                                 $favicon_modified = @filemtime($favicon_file);
 454
 455                                 _debug("checking favicon...", $debug_enabled);
 456
 457                                 check_feed_favicon($site_url, $feed);
 458                                 $favicon_modified_new = @filemtime($favicon_file);
 459
 460                                 if ($favicon_modified_new > $favicon_modified)
 461                                         $favicon_avg_color = '';
 462
 463                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 464                                                 require_once "colors.php";
 465
 466                                                 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 467                                                         id = '$feed'");
 468
 469                                                 $favicon_color = db_escape_string(
 470                                                         calculate_avg_color($favicon_file));
 471
 472                                                 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
 473                                 } else if ($favicon_avg_color == 'fail') {
 474                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 475                                 }
 476
 477                                 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 478                                         $favicon_colorstring
 479                                         WHERE id = '$feed'");
 480                         }
 481
 482                         if (!$registered_title || $registered_title == "[Unknown]") {
 483
 484                                 $feed_title = db_escape_string(mb_substr($rss->get_title(), 0, 199));
 485
 486                                 if ($feed_title) {
 487                                         _debug("registering title: $feed_title", $debug_enabled);
 488
 489                                         db_query("UPDATE ttrss_feeds SET
 490                                                 title = '$feed_title' WHERE id = '$feed'");
 491                                 }
 492                         }
 493
 494                         if ($site_url && $orig_site_url != $site_url) {
 495                                 db_query("UPDATE ttrss_feeds SET
 496                                         site_url = '$site_url' WHERE id = '$feed'");
 497                         }
 498
 499                         _debug("loading filters & labels...", $debug_enabled);
 500
 501                         $filters = load_filters($feed, $owner_uid);
 502                         $labels = get_all_labels($owner_uid);
 503
 504                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 505
 506                         $items = $rss->get_items();
 507
 508                         if (!is_array($items)) {
 509                                 _debug("no articles found.", $debug_enabled);
 510
 511                                 db_query("UPDATE ttrss_feeds
 512                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 513
 514                                 return; // no articles
 515                         }
 516
 517                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 518
 519                                 _debug("checking for PUSH hub...", $debug_enabled);
 520
 521                                 $feed_hub_url = false;
 522
 523                                 $links = $rss->get_links('hub');
 524
 525                                 if ($links && is_array($links)) {
 526                                         foreach ($links as $l) {
 527                                                 $feed_hub_url = $l;
 528                                                 break;
 529                                         }
 530                                 }
 531
 532                                 _debug("feed hub url: $feed_hub_url", $debug_enabled);
 533
 534                                 $feed_self_url = $fetch_url;
 535
 536                                 $links = $rss->get_links('self');
 537
 538                                 if ($links && is_array($links)) {
 539                                         foreach ($links as $l) {
 540                                                 $feed_self_url = $l;
 541                                                 break;
 542                                         }
 543                                 }
 544
 545                                 _debug("feed self url = $feed_self_url");
 546
 547                                 if ($feed_hub_url && $feed_self_url && function_exists('curl_init') &&
 548                                         !ini_get("open_basedir")) {
 549
 550                                         require_once 'lib/pubsubhubbub/subscriber.php';
 551
 552                                         $callback_url = get_self_url_prefix() .
 553                                                 "/public.php?op=pubsub&id=$feed";
 554
 555                                         $s = new Subscriber($feed_hub_url, $callback_url);
 556
 557                                         $rc = $s->subscribe($feed_self_url);
 558
 559                                         _debug("feed hub url found, subscribe request sent. [rc=$rc]", $debug_enabled);
 560
 561                                         db_query("UPDATE ttrss_feeds SET pubsub_state = 1
 562                                                 WHERE id = '$feed'");
 563                                 }
 564                         }
 565
 566                         _debug("processing articles...", $debug_enabled);
 567
 568                         foreach ($items as $item) {
 569                                 if ($_REQUEST['xdebug'] == 3) {
 570                                         print_r($item);
 571                                 }
 572
 573                                 $entry_guid = $item->get_id();
 574                                 if (!$entry_guid) $entry_guid = $item->get_link();
 575                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 576                                 if (!$entry_guid) continue;
 577
 578                                 $entry_guid = "$owner_uid,$entry_guid";
 579
 580                                 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
 581
 582                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 583
 584                                 $entry_timestamp = "";
 585
 586                                 $entry_timestamp = $item->get_date();
 587
 588                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 589
 590                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 591                                         $entry_timestamp = time();
 592                                 }
 593
 594                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 595
 596                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 597
 598 //                              $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
 599 //                              $entry_title = decode_numeric_entities($entry_title);
 600                                 $entry_title = $item->get_title();
 601
 602                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 603
 604                                 _debug("title $entry_title", $debug_enabled);
 605                                 _debug("link $entry_link", $debug_enabled);
 606
 607                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 608
 609                                 $entry_content = $item->get_content();
 610                                 if (!$entry_content) $entry_content = $item->get_description();
 611
 612                                 if ($_REQUEST["xdebug"] == 2) {
 613                                         print "content: ";
 614                                         print $entry_content;
 615                                         print "\n";
 616                                 }
 617
 618                                 $entry_language = "";
 619
 620                                 if (DETECT_ARTICLE_LANGUAGE) {
 621                                         $entry_language = $lang->detect($entry_title . " " . $entry_content, 1);
 622
 623                                         if (count($entry_language) > 0) {
 624                                                 $possible = array_keys($entry_language);
 625                                                 $entry_language = $possible[0];
 626
 627                                                 _debug("detected language: $entry_language", $debug_enabled);
 628                                         } else {
 629                                                 $entry_language = "";
 630                                         }
 631                                 }
 632
 633                                 $entry_comments = $item->get_comments_url();
 634                                 $entry_author = $item->get_author();
 635
 636                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 637
 638                                 $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
 639                                 $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
 640
 641                                 $num_comments = (int) $item->get_comments_count();
 642
 643                                 _debug("author $entry_author", $debug_enabled);
 644                                 _debug("num_comments: $num_comments", $debug_enabled);
 645                                 _debug("looking for tags...", $debug_enabled);
 646
 647                                 // parse <category> entries into tags
 648
 649                                 $additional_tags = array();
 650
 651                                 $additional_tags_src = $item->get_categories();
 652
 653                                 if (is_array($additional_tags_src)) {
 654                                         foreach ($additional_tags_src as $tobj) {
 655                                                 array_push($additional_tags, $tobj);
 656                                         }
 657                                 }
 658
 659                                 $entry_tags = array_unique($additional_tags);
 660
 661                                 for ($i = 0; $i < count($entry_tags); $i++)
 662                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 663
 664                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 665
 666                                 _debug("done collecting data.", $debug_enabled);
 667
 668                                 $result = db_query("SELECT id, content_hash FROM ttrss_entries
 669                                         WHERE guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed'");
 670
 671                                 if (db_num_rows($result) != 0) {
 672                                         $base_entry_id = db_fetch_result($result, 0, "id");
 673                                         $entry_stored_hash = db_fetch_result($result, 0, "content_hash");
 674                                 } else {
 675                                         $base_entry_id = false;
 676                                         $entry_stored_hash = "";
 677                                 }
 678
 679                                 $article = array("owner_uid" => $owner_uid, // read only
 680                                         "guid" => $entry_guid, // read only
 681                                         "title" => $entry_title,
 682                                         "content" => $entry_content,
 683                                         "link" => $entry_link,
 684                                         "tags" => $entry_tags,
 685                                         "author" => $entry_author,
 686                                         "language" => $entry_language, // read only
 687                                         "feed" => array("id" => $feed,
 688                                                 "fetch_url" => $fetch_url,
 689                                                 "site_url" => $site_url)
 690                                         );
 691
 692                                 $entry_plugin_data = "";
 693                                 $entry_current_hash = calculate_article_hash($article, $pluginhost);
 694
 695                                 _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
 696
 697                                 if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
 698                                         _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
 699
 700                                         // we keep encountering the entry in feeds, so we need to
 701                                         // update date_updated column so that we don't get horrible
 702                                         // dupes when the entry gets purged and reinserted again e.g.
 703                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 704
 705                                         $base_entry_id = db_fetch_result($result, 0, "id");
 706
 707                                         db_query("UPDATE ttrss_entries SET date_updated = NOW()
 708                                                 WHERE id = '$base_entry_id'");
 709
 710                     // if we allow duplicate posts, we have to continue to
 711                     // create the user entries for this feed
 712                     if (!get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 713                         continue;
 714                     }
 715                                 }
 716
 717                                 _debug("hash differs, applying plugin filters:", $debug_enabled);
 718
 719                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 720                                         _debug("... " . get_class($plugin), $debug_enabled);
 721
 722                                         $start = microtime(true);
 723                                         $article = $plugin->hook_article_filter($article);
 724
 725                                         _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 726
 727                                         $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
 728                                 }
 729
 730                                 $entry_plugin_data = db_escape_string($entry_plugin_data);
 731
 732                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 733
 734                                 $entry_tags = $article["tags"];
 735                                 $entry_guid = db_escape_string($entry_guid);
 736                                 $entry_title = db_escape_string($article["title"]);
 737                                 $entry_author = db_escape_string($article["author"]);
 738                                 $entry_link = db_escape_string($article["link"]);
 739                                 $entry_content = $article["content"]; // escaped below
 740
 741                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 742                                         cache_images($entry_content, $site_url, $debug_enabled);
 743
 744                                 $entry_content = db_escape_string($entry_content, false);
 745
 746                                 db_query("BEGIN");
 747
 748                                 $result = db_query("SELECT id FROM      ttrss_entries
 749                                         WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
 750
 751                                 if (db_num_rows($result) == 0) {
 752
 753                                         _debug("base guid [$entry_guid] not found", $debug_enabled);
 754
 755                                         // base post entry does not exist, create it
 756
 757                                         $result = db_query(
 758                                                 "INSERT INTO ttrss_entries
 759                                                         (title,
 760                                                         guid,
 761                                                         link,
 762                                                         updated,
 763                                                         content,
 764                                                         content_hash,
 765                                                         no_orig_date,
 766                                                         date_updated,
 767                                                         date_entered,
 768                                                         comments,
 769                                                         num_comments,
 770                                                         plugin_data,
 771                                                         lang,
 772                                                         author)
 773                                                 VALUES
 774                                                         ('$entry_title',
 775                                                         '$entry_guid_hashed',
 776                                                         '$entry_link',
 777                                                         '$entry_timestamp_fmt',
 778                                                         '$entry_content',
 779                                                         '$entry_current_hash',
 780                                                         false,
 781                                                         NOW(),
 782                                                         '$date_feed_processed',
 783                                                         '$entry_comments',
 784                                                         '$num_comments',
 785                                                         '$entry_plugin_data',
 786                                                         '$entry_language',
 787                                                         '$entry_author')");
 788
 789                                         $article_labels = array();
 790
 791                                 } else {
 792                                         $base_entry_id = db_fetch_result($result, 0, "id");
 793
 794                                         $article_labels = get_article_labels($base_entry_id, $owner_uid);
 795                                 }
 796
 797                                 // now it should exist, if not - bad luck then
 798
 799                                 $result = db_query("SELECT id FROM ttrss_entries
 800                                         WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 801
 802                                 $entry_ref_id = 0;
 803                                 $entry_int_id = 0;
 804
 805                                 if (db_num_rows($result) == 1) {
 806
 807                                         _debug("base guid found, checking for user record", $debug_enabled);
 808
 809                                         $ref_id = db_fetch_result($result, 0, "id");
 810                                         $entry_ref_id = $ref_id;
 811
 812                                         /* $stored_guid = db_fetch_result($result, 0, "guid");
 813                                         if ($stored_guid != $entry_guid_hashed) {
 814                                                 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
 815
 816                                                 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
 817                                                         id = '$ref_id'");
 818                                         } */
 819
 820                                         // check for user post link to main table
 821
 822                                         // do we allow duplicate posts with same GUID in different feeds?
 823                                         if (get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 824                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 825                                         } else {
 826                                                 $dupcheck_qpart = "";
 827                                         }
 828
 829                                         /* Collect article tags here so we could filter by them: */
 830
 831                                         $article_filters = get_article_filters($filters, $entry_title,
 832                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 833                                                 $entry_tags);
 834
 835                                         if ($debug_enabled) {
 836                                                 _debug("article filters: ", $debug_enabled);
 837                                                 if (count($article_filters) != 0) {
 838                                                         print_r($article_filters);
 839                                                 }
 840                                         }
 841
 842                                         if (find_article_filter($article_filters, "filter")) {
 843                                                 db_query("COMMIT"); // close transaction in progress
 844                                                 continue;
 845                                         }
 846
 847                                         $score = calculate_article_score($article_filters);
 848
 849                                         _debug("initial score: $score", $debug_enabled);
 850
 851                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 852                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 853                                                         $dupcheck_qpart";
 854
 855 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 856
 857                                         $result = db_query($query);
 858
 859                                         // okay it doesn't exist - create user entry
 860                                         if (db_num_rows($result) == 0) {
 861
 862                                                 _debug("user record not found, creating...", $debug_enabled);
 863
 864                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup')) {
 865                                                         $unread = 'true';
 866                                                         $last_read_qpart = 'NULL';
 867                                                 } else {
 868                                                         $unread = 'false';
 869                                                         $last_read_qpart = 'NOW()';
 870                                                 }
 871
 872                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 873                                                         $marked = 'true';
 874                                                 } else {
 875                                                         $marked = 'false';
 876                                                 }
 877
 878                                                 if (find_article_filter($article_filters, 'publish')) {
 879                                                         $published = 'true';
 880                                                 } else {
 881                                                         $published = 'false';
 882                                                 }
 883
 884                                                 // N-grams
 885
 886                                                 if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 887
 888                                                         $result = db_query("SELECT COUNT(*) AS similar FROM
 889                                                                         ttrss_entries,ttrss_user_entries
 890                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 891                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 892                                                                         AND owner_uid = $owner_uid");
 893
 894                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 895
 896                                                         _debug("N-gram similar results: $ngram_similar", $debug_enabled);
 897
 898                                                         if ($ngram_similar > 0) {
 899                                                                 $unread = 'false';
 900                                                         }
 901                                                 }
 902
 903                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 904                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 905
 906                                                 $result = db_query(
 907                                                         "INSERT INTO ttrss_user_entries
 908                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 909                                                                 published, score, tag_cache, label_cache, uuid,
 910                                                                 last_marked, last_published)
 911                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 912                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 913                                                                 '', $last_marked, $last_published)");
 914
 915                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 916                                                         $rss_link = get_self_url_prefix() .
 917                                                                 "/public.php?op=rss&id=-2&key=" .
 918                                                                 get_feed_access_key(-2, false, $owner_uid);
 919
 920                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
 921
 922                                                         /* $pubsub_result = */ $p->publish_update($rss_link);
 923                                                 }
 924
 925                                                 $result = db_query(
 926                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 927                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 928                                                                 feed_id = '$feed' LIMIT 1");
 929
 930                                                 if (db_num_rows($result) == 1) {
 931                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 932                                                 }
 933                                         } else {
 934                                                 _debug("user record FOUND", $debug_enabled);
 935
 936                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 937                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 938                                         }
 939
 940                                         _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 941
 942                                         db_query("UPDATE ttrss_entries
 943                                                 SET title = '$entry_title',
 944                                                         content = '$entry_content',
 945                                                         content_hash = '$entry_current_hash',
 946                                                         updated = '$entry_timestamp_fmt',
 947                                                         num_comments = '$num_comments',
 948                                                         plugin_data = '$entry_plugin_data',
 949                                                         author = '$entry_author',
 950                                                         lang = '$entry_language'
 951                                                 WHERE id = '$ref_id'");
 952
 953                                         if ($mark_unread_on_update) {
 954                                                 db_query("UPDATE ttrss_user_entries
 955                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
 956                                         }
 957                                 }
 958
 959                                 db_query("COMMIT");
 960
 961                                 _debug("assigning labels...", $debug_enabled);
 962
 963                                 assign_article_to_label_filters($entry_ref_id, $article_filters,
 964                                         $owner_uid, $article_labels);
 965
 966                                 _debug("looking for enclosures...", $debug_enabled);
 967
 968                                 // enclosures
 969
 970                                 $enclosures = array();
 971
 972                                 $encs = $item->get_enclosures();
 973
 974                                 if (is_array($encs)) {
 975                                         foreach ($encs as $e) {
 976                                                 $e_item = array(
 977                                                         $e->link, $e->type, $e->length, $e->title, $e->width, $e->height);
 978                                                 array_push($enclosures, $e_item);
 979                                         }
 980                                 }
 981
 982                                 if ($debug_enabled) {
 983                                         _debug("article enclosures:", $debug_enabled);
 984                                         print_r($enclosures);
 985                                 }
 986
 987                                 db_query("BEGIN");
 988
 989 //                              debugging
 990 //                              db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
 991
 992                                 foreach ($enclosures as $enc) {
 993                                         $enc_url = db_escape_string($enc[0]);
 994                                         $enc_type = db_escape_string($enc[1]);
 995                                         $enc_dur = db_escape_string($enc[2]);
 996                                         $enc_title = db_escape_string($enc[3]);
 997                                         $enc_width = intval($enc[4]);
 998                                         $enc_height = intval($enc[5]);
 999
1000                                         $result = db_query("SELECT id FROM ttrss_enclosures
1001                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1002
1003                                         if (db_num_rows($result) == 0) {
1004                                                 db_query("INSERT INTO ttrss_enclosures
1005                                                         (content_url, content_type, title, duration, post_id, width, height) VALUES
1006                                                         ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id', $enc_width, $enc_height)");
1007                                         }
1008                                 }
1009
1010                                 db_query("COMMIT");
1011
1012                                 // check for manual tags (we have to do it here since they're loaded from filters)
1013
1014                                 foreach ($article_filters as $f) {
1015                                         if ($f["type"] == "tag") {
1016
1017                                                 $manual_tags = trim_array(explode(",", $f["param"]));
1018
1019                                                 foreach ($manual_tags as $tag) {
1020                                                         if (tag_is_valid($tag)) {
1021                                                                 array_push($entry_tags, $tag);
1022                                                         }
1023                                                 }
1024                                         }
1025                                 }
1026
1027                                 // Skip boring tags
1028
1029                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1030                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1031
1032                                 $filtered_tags = array();
1033                                 $tags_to_cache = array();
1034
1035                                 if ($entry_tags && is_array($entry_tags)) {
1036                                         foreach ($entry_tags as $tag) {
1037                                                 if (array_search($tag, $boring_tags) === false) {
1038                                                         array_push($filtered_tags, $tag);
1039                                                 }
1040                                         }
1041                                 }
1042
1043                                 $filtered_tags = array_unique($filtered_tags);
1044
1045                                 if ($debug_enabled) {
1046                                         _debug("filtered article tags:", $debug_enabled);
1047                                         print_r($filtered_tags);
1048                                 }
1049
1050                                 // Save article tags in the database
1051
1052                                 if (count($filtered_tags) > 0) {
1053
1054                                         db_query("BEGIN");
1055
1056                                         foreach ($filtered_tags as $tag) {
1057
1058                                                 $tag = sanitize_tag($tag);
1059                                                 $tag = db_escape_string($tag);
1060
1061                                                 if (!tag_is_valid($tag)) continue;
1062
1063                                                 $result = db_query("SELECT id FROM ttrss_tags
1064                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1065                                                         owner_uid = '$owner_uid' LIMIT 1");
1066
1067                                                         if ($result && db_num_rows($result) == 0) {
1068
1069                                                                 db_query("INSERT INTO ttrss_tags
1070                                                                         (owner_uid,tag_name,post_int_id)
1071                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1072                                                         }
1073
1074                                                 array_push($tags_to_cache, $tag);
1075                                         }
1076
1077                                         /* update the cache */
1078
1079                                         $tags_to_cache = array_unique($tags_to_cache);
1080
1081                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1082
1083                                         db_query("UPDATE ttrss_user_entries
1084                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1085                                                 AND owner_uid = $owner_uid");
1086
1087                                         db_query("COMMIT");
1088                                 }
1089
1090                                 if (get_pref("AUTO_ASSIGN_LABELS", $owner_uid, false)) {
1091                                         _debug("auto-assigning labels...", $debug_enabled);
1092
1093                                         foreach ($labels as $label) {
1094                                                 $caption = preg_quote($label["caption"]);
1095
1096                                                 if ($caption && preg_match("/\b$caption\b/i", "$tags_str " . strip_tags($entry_content) . " $entry_title")) {
1097                                                         if (!labels_contains_caption($article_labels, $caption)) {
1098                                                                 label_add_article($entry_ref_id, $caption, $owner_uid);
1099                                                         }
1100                                                 }
1101                                         }
1102                                 }
1103
1104                                 _debug("article processed", $debug_enabled);
1105                         }
1106
1107                         _debug("purging feed...", $debug_enabled);
1108
1109                         purge_feed($feed, 0, $debug_enabled);
1110
1111                         db_query("UPDATE ttrss_feeds
1112                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1113
1114 //                      db_query("COMMIT");
1115
1116                 } else {
1117
1118                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1119
1120                         _debug("fetch error: $error_msg", $debug_enabled);
1121
1122                         if (count($rss->errors()) > 1) {
1123                                 foreach ($rss->errors() as $error) {
1124                                         _debug("+ $error");
1125                                 }
1126                         }
1127
1128                         db_query(
1129                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1130                                 last_updated = NOW() WHERE id = '$feed'");
1131
1132                         unset($rss);
1133                 }
1134
1135                 _debug("done", $debug_enabled);
1136
1137                 return $rss;
1138         }
1139
1140         function cache_images($html, $site_url, $debug) {
1141                 libxml_use_internal_errors(true);
1142
1143                 $charset_hack = '<head>
1144                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1145                 </head>';
1146
1147                 $doc = new DOMDocument();
1148                 $doc->loadHTML($charset_hack . $html);
1149                 $xpath = new DOMXPath($doc);
1150
1151                 $entries = $xpath->query('(//img[@src])');
1152
1153                 foreach ($entries as $entry) {
1154                         if ($entry->hasAttribute('src')) {
1155                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1156
1157                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1158
1159                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1160
1161                                 if (!file_exists($local_filename)) {
1162                                         $file_content = fetch_file_contents($src);
1163
1164                                         if ($file_content && strlen($file_content) > _MIN_CACHE_IMAGE_SIZE) {
1165                                                 file_put_contents($local_filename, $file_content);
1166                                         }
1167                                 }
1168
1169                                 /* if (file_exists($local_filename)) {
1170                                         $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
1171                                                 base64_encode($src));
1172                                 } */
1173                         }
1174                 }
1175
1176                 //$node = $doc->getElementsByTagName('body')->item(0);
1177                 //return $doc->saveXML($node);
1178         }
1179
1180         function expire_error_log($debug) {
1181                 if ($debug) _debug("Removing old error log entries...");
1182
1183                 if (DB_TYPE == "pgsql") {
1184                         db_query("DELETE FROM ttrss_error_log
1185                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1186                 } else {
1187                         db_query("DELETE FROM ttrss_error_log
1188                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1189                 }
1190
1191         }
1192
1193         function expire_lock_files($debug) {
1194                 //if ($debug) _debug("Removing old lock files...");
1195
1196                 $num_deleted = 0;
1197
1198                 if (is_writable(LOCK_DIRECTORY)) {
1199                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1200
1201                         if ($files) {
1202                                 foreach ($files as $file) {
1203                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1204                                                 unlink($file);
1205                                                 ++$num_deleted;
1206                                         }
1207                                 }
1208                         }
1209                 }
1210
1211                 if ($debug) _debug("Removed $num_deleted old lock files.");
1212         }
1213
1214         function expire_cached_files($debug) {
1215                 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1216                         $cache_dir = CACHE_DIR . "/$dir";
1217
1218 //                      if ($debug) _debug("Expiring $cache_dir");
1219
1220                         $num_deleted = 0;
1221
1222                         if (is_writable($cache_dir)) {
1223                                 $files = glob("$cache_dir/*");
1224
1225                                 if ($files) {
1226                                         foreach ($files as $file) {
1227                                                 if (time() - filemtime($file) > 86400*7) {
1228                                                         unlink($file);
1229
1230                                                         ++$num_deleted;
1231                                                 }
1232                                         }
1233                                 }
1234                         }
1235
1236                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1237                 }
1238         }
1239
1240         /**
1241         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1242         * Returns the url query as associative array
1243         *
1244         * @param    string    query
1245         * @return    array    params
1246         */
1247         function convertUrlQuery($query) {
1248                 $queryParts = explode('&', $query);
1249
1250                 $params = array();
1251
1252                 foreach ($queryParts as $param) {
1253                         $item = explode('=', $param);
1254                         $params[$item[0]] = $item[1];
1255                 }
1256
1257                 return $params;
1258         }
1259
1260         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1261                 $matches = array();
1262
1263                 foreach ($filters as $filter) {
1264                         $match_any_rule = $filter["match_any_rule"];
1265                         $inverse = $filter["inverse"];
1266                         $filter_match = false;
1267
1268                         foreach ($filter["rules"] as $rule) {
1269                                 $match = false;
1270                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1271                                 $rule_inverse = $rule["inverse"];
1272
1273                                 if (!$reg_exp)
1274                                         continue;
1275
1276                                 switch ($rule["type"]) {
1277                                 case "title":
1278                                         $match = @preg_match("/$reg_exp/i", $title);
1279                                         break;
1280                                 case "content":
1281                                         // we don't need to deal with multiline regexps
1282                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1283
1284                                         $match = @preg_match("/$reg_exp/i", $content);
1285                                         break;
1286                                 case "both":
1287                                         // we don't need to deal with multiline regexps
1288                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1289
1290                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1291                                         break;
1292                                 case "link":
1293                                         $match = @preg_match("/$reg_exp/i", $link);
1294                                         break;
1295                                 case "author":
1296                                         $match = @preg_match("/$reg_exp/i", $author);
1297                                         break;
1298                                 case "tag":
1299                                         foreach ($tags as $tag) {
1300                                                 if (@preg_match("/$reg_exp/i", $tag)) {
1301                                                         $match = true;
1302                                                         break;
1303                                                 }
1304                                         }
1305                                         break;
1306                                 }
1307
1308                                 if ($rule_inverse) $match = !$match;
1309
1310                                 if ($match_any_rule) {
1311                                         if ($match) {
1312                                                 $filter_match = true;
1313                                                 break;
1314                                         }
1315                                 } else {
1316                                         $filter_match = $match;
1317                                         if (!$match) {
1318                                                 break;
1319                                         }
1320                                 }
1321                         }
1322
1323                         if ($inverse) $filter_match = !$filter_match;
1324
1325                         if ($filter_match) {
1326                                 foreach ($filter["actions"] AS $action) {
1327                                         array_push($matches, $action);
1328
1329                                         // if Stop action encountered, perform no further processing
1330                                         if ($action["type"] == "stop") return $matches;
1331                                 }
1332                         }
1333                 }
1334
1335                 return $matches;
1336         }
1337
1338         function find_article_filter($filters, $filter_name) {
1339                 foreach ($filters as $f) {
1340                         if ($f["type"] == $filter_name) {
1341                                 return $f;
1342                         };
1343                 }
1344                 return false;
1345         }
1346
1347         function find_article_filters($filters, $filter_name) {
1348                 $results = array();
1349
1350                 foreach ($filters as $f) {
1351                         if ($f["type"] == $filter_name) {
1352                                 array_push($results, $f);
1353                         };
1354                 }
1355                 return $results;
1356         }
1357
1358         function calculate_article_score($filters) {
1359                 $score = 0;
1360
1361                 foreach ($filters as $f) {
1362                         if ($f["type"] == "score") {
1363                                 $score += $f["param"];
1364                         };
1365                 }
1366                 return $score;
1367         }
1368
1369         function labels_contains_caption($labels, $caption) {
1370                 foreach ($labels as $label) {
1371                         if ($label[1] == $caption) {
1372                                 return true;
1373                         }
1374                 }
1375
1376                 return false;
1377         }
1378
1379         function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1380                 foreach ($filters as $f) {
1381                         if ($f["type"] == "label") {
1382                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1383                                         label_add_article($id, $f["param"], $owner_uid);
1384                                 }
1385                         }
1386                 }
1387         }
1388
1389         function make_guid_from_title($title) {
1390                 return preg_replace("/[ \"\',.:;]/", "-",
1391                         mb_strtolower(strip_tags($title), 'utf-8'));
1392         }
1393
1394         /* function verify_feed_xml($feed_data) {
1395                 libxml_use_internal_errors(true);
1396                 $doc = new DOMDocument();
1397                 $doc->loadXML($feed_data);
1398                 $error = libxml_get_last_error();
1399                 libxml_clear_errors();
1400                 return $error;
1401         } */
1402
1403         function housekeeping_common($debug) {
1404                 expire_cached_files($debug);
1405                 expire_lock_files($debug);
1406                 expire_error_log($debug);
1407
1408                 $count = update_feedbrowser_cache();
1409                 _debug("Feedbrowser updated, $count feeds processed.");
1410
1411                 purge_orphans( true);
1412                 $rc = cleanup_tags( 14, 50000);
1413
1414                 _debug("Cleaned $rc cached tags.");
1415
1416                 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1417
1418         }
1419 ?>