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                                 $x = strip_tags(is_array($v) ? implode(",", $v) : $v);
  13
  14                                 //_debug("$k:" . sha1($x) . ":" . htmlspecialchars($x), true);
  15
  16                                 $tmp .= sha1("$k:" . sha1($x));
  17                         }
  18                 }
  19
  20                 return sha1(implode(",", $pluginhost->get_plugin_names()) . $tmp);
  21         }
  22
  23         function update_feedbrowser_cache() {
  24
  25                 $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
  26                         FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
  27                                 WHERE tf.feed_url = ttrss_feeds.feed_url
  28                                 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
  29                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  30
  31                 db_query("BEGIN");
  32
  33                 db_query("DELETE FROM ttrss_feedbrowser_cache");
  34
  35                 $count = 0;
  36
  37                 while ($line = db_fetch_assoc($result)) {
  38                         $subscribers = db_escape_string($line["subscribers"]);
  39                         $feed_url = db_escape_string($line["feed_url"]);
  40                         $title = db_escape_string($line["title"]);
  41                         $site_url = db_escape_string($line["site_url"]);
  42
  43                         $tmp_result = db_query("SELECT subscribers FROM
  44                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  45
  46                         if (db_num_rows($tmp_result) == 0) {
  47
  48                                 db_query("INSERT INTO ttrss_feedbrowser_cache
  49                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  50                                                 '$site_url', '$title', '$subscribers')");
  51
  52                                 ++$count;
  53
  54                         }
  55
  56                 }
  57
  58                 db_query("COMMIT");
  59
  60                 return $count;
  61
  62         }
  63
  64
  65         /**
  66          * Update a feed batch.
  67          * Used by daemons to update n feeds by run.
  68          * Only update feed needing a update, and not being processed
  69          * by another process.
  70          *
  71          * @param mixed $link Database link
  72          * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
  73          * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
  74          * @param boolean $debug Set to false to disable debug output. Default to true.
  75          * @return void
  76          */
  77         function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  78                 // Process all other feeds using last_updated and interval parameters
  79
  80                 $schema_version = get_schema_version();
  81
  82                 if ($schema_version != SCHEMA_VERSION) {
  83                         die("Schema version is wrong, please upgrade the database.\n");
  84                 }
  85
  86                 define('PREFS_NO_CACHE', true);
  87
  88                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  89                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  90                         if (DB_TYPE == "pgsql") {
  91                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  92                         } else {
  93                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  94                         }
  95                 } else {
  96                         $login_thresh_qpart = "";
  97                 }
  98
  99                 // Test if the feed need a update (update interval exceeded).
 100                 if (DB_TYPE == "pgsql") {
 101                         $update_limit_qpart = "AND ((
 102                                         ttrss_feeds.update_interval = 0
 103                                         AND ttrss_user_prefs.value != '-1'
 104                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
 105                                 ) OR (
 106                                         ttrss_feeds.update_interval > 0
 107                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
 108                                 ) OR (ttrss_feeds.last_updated IS NULL
 109                                         AND ttrss_user_prefs.value != '-1')
 110                                 OR (last_updated = '1970-01-01 00:00:00'
 111                                         AND ttrss_user_prefs.value != '-1'))";
 112                 } else {
 113                         $update_limit_qpart = "AND ((
 114                                         ttrss_feeds.update_interval = 0
 115                                         AND ttrss_user_prefs.value != '-1'
 116                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 117                                 ) OR (
 118                                         ttrss_feeds.update_interval > 0
 119                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 120                                 ) OR (ttrss_feeds.last_updated IS NULL
 121                                         AND ttrss_user_prefs.value != '-1')
 122                                 OR (last_updated = '1970-01-01 00:00:00'
 123                                         AND ttrss_user_prefs.value != '-1'))";
 124                 }
 125
 126                 // Test if feed is currently being updated by another process.
 127                 if (DB_TYPE == "pgsql") {
 128                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 129                 } else {
 130                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 131                 }
 132
 133                 // Test if there is a limit to number of updated feeds
 134                 $query_limit = "";
 135                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 136
 137                 // Update the least recently updated feeds first
 138                 $query_order = "ORDER BY last_updated";
 139                 if (DB_TYPE == "pgsql") $query_order .= " NULLS FIRST";
 140
 141                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 142                         FROM
 143                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 144                         WHERE
 145                                 ttrss_feeds.owner_uid = ttrss_users.id
 146                                 AND ttrss_user_prefs.profile IS NULL
 147                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 148                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 149                                 $login_thresh_qpart $update_limit_qpart
 150                                 $updstart_thresh_qpart
 151                                 $query_order $query_limit";
 152
 153                 // We search for feed needing update.
 154                 $result = db_query($query);
 155
 156                 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 157
 158                 // Here is a little cache magic in order to minimize risk of double feed updates.
 159                 $feeds_to_update = array();
 160                 while ($line = db_fetch_assoc($result)) {
 161                         array_push($feeds_to_update, db_escape_string($line['feed_url']));
 162                 }
 163
 164                 // We update the feed last update started date before anything else.
 165                 // There is no lag due to feed contents downloads
 166                 // It prevent an other process to update the same feed.
 167
 168                 if(count($feeds_to_update) > 0) {
 169                         $feeds_quoted = array();
 170
 171                         foreach ($feeds_to_update as $feed) {
 172                                 array_push($feeds_quoted, "'" . db_escape_string($feed) . "'");
 173                         }
 174
 175                         db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 176                                 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
 177                 }
 178
 179                 $nf = 0;
 180                 $bstarted = microtime(true);
 181
 182                 // For each feed, we call the feed update function.
 183                 foreach ($feeds_to_update as $feed) {
 184                         if($debug) _debug("Base feed: $feed");
 185
 186                         //update_rss_feed($line["id"], true);
 187
 188                         // since we have the data cached, we can deal with other feeds with the same url
 189
 190                         $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 191                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 192                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 193                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 194                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 195                                 ttrss_user_prefs.profile IS NULL AND
 196                                 feed_url = '".db_escape_string($feed)."'
 197                                 $update_limit_qpart
 198                                 $login_thresh_qpart
 199                         ORDER BY ttrss_feeds.id $query_limit");
 200
 201                         if (db_num_rows($tmp_result) > 0) {
 202                                 $rss = false;
 203
 204                                 while ($tline = db_fetch_assoc($tmp_result)) {
 205                                         if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 206
 207                                         $fstarted = microtime(true);
 208                                         $rss = update_rss_feed($tline["id"], true, false);
 209                                         _debug_suppress(false);
 210
 211                                         _debug(sprintf("    %.4f (sec)", microtime(true) - $fstarted));
 212
 213                                         ++$nf;
 214                                 }
 215                         }
 216                 }
 217
 218                 if ($nf > 0) {
 219                         _debug(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
 220                                 microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
 221                 }
 222
 223                 require_once "digest.php";
 224
 225                 // Send feed digests by email if needed.
 226                 send_headlines_digests($debug);
 227
 228                 return $nf;
 229
 230         } // function update_daemon_common
 231
 232         // this is used when subscribing
 233         function set_basic_feed_info($feed) {
 234
 235                 $feed = db_escape_string($feed);
 236
 237                 $result = db_query("SELECT feed_url,auth_pass,auth_login,auth_pass_encrypted
 238                                         FROM ttrss_feeds WHERE id = '$feed'");
 239
 240                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 241                         0, "auth_pass_encrypted"));
 242
 243                 $auth_login = db_fetch_result($result, 0, "auth_login");
 244                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 245
 246                 if ($auth_pass_encrypted) {
 247                         require_once "crypt.php";
 248                         $auth_pass = decrypt_string($auth_pass);
 249                 }
 250
 251                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 252
 253                 $feed_data = fetch_file_contents($fetch_url, false,
 254                         $auth_login, $auth_pass, false,
 255                         FEED_FETCH_TIMEOUT_TIMEOUT,
 256                         0);
 257
 258                 global $fetch_curl_used;
 259
 260                 if (!$fetch_curl_used) {
 261                         $tmp = @gzdecode($feed_data);
 262
 263                         if ($tmp) $feed_data = $tmp;
 264                 }
 265
 266                 $feed_data = trim($feed_data);
 267
 268                 $rss = new FeedParser($feed_data);
 269                 $rss->init();
 270
 271                 if (!$rss->error()) {
 272
 273                         $result = db_query("SELECT title, site_url FROM ttrss_feeds WHERE id = '$feed'");
 274
 275                         $registered_title = db_fetch_result($result, 0, "title");
 276                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 277
 278                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 279                         $feed_title = db_escape_string(mb_substr($rss->get_title(), 0, 199));
 280
 281                         if ($feed_title && (!$registered_title || $registered_title == "[Unknown]")) {
 282                                 db_query("UPDATE ttrss_feeds SET
 283                                         title = '$feed_title' WHERE id = '$feed'");
 284                         }
 285
 286                         if ($site_url && $orig_site_url != $site_url) {
 287                                 db_query("UPDATE ttrss_feeds SET
 288                                                         site_url = '$site_url' WHERE id = '$feed'");
 289                         }
 290                 }
 291         }
 292
 293         // ignore_daemon is not used
 294         function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false, $rss = false) {
 295
 296                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 297
 298                 _debug_suppress(!$debug_enabled);
 299                 _debug("start", $debug_enabled);
 300
 301                 $result = db_query("SELECT title FROM ttrss_feeds
 302                         WHERE id = '$feed'");
 303                 $title = db_fetch_result($result, 0, "title");
 304
 305                 // feed was batch-subscribed or something, we need to get basic info
 306                 // this is not optimal currently as it fetches stuff separately TODO: optimize
 307                 if ($title == "[Unknown]") {
 308                         _debug("setting basic feed info for $feed...");
 309                         set_basic_feed_info($feed);
 310                 }
 311
 312                 $result = db_query("SELECT id,update_interval,auth_login,
 313                         feed_url,auth_pass,cache_images,
 314                         mark_unread_on_update, owner_uid,
 315                         pubsub_state, auth_pass_encrypted,
 316                         feed_language
 317                         FROM ttrss_feeds WHERE id = '$feed'");
 318
 319                 if (db_num_rows($result) == 0) {
 320                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 321                         user_error("Attempt to update unknown/invalid feed $feed", E_USER_WARNING);
 322                         return false;
 323                 }
 324
 325                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 326                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 327                         0, "mark_unread_on_update"));
 328                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 329                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 330                         0, "auth_pass_encrypted"));
 331
 332                 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
 333                         WHERE id = '$feed'");
 334
 335                 $auth_login = db_fetch_result($result, 0, "auth_login");
 336                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 337
 338                 if ($auth_pass_encrypted) {
 339                         require_once "crypt.php";
 340                         $auth_pass = decrypt_string($auth_pass);
 341                 }
 342
 343                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 344                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 345                 $feed_language = db_escape_string(mb_strtolower(db_fetch_result($result, 0, "feed_language")));
 346                 if (!$feed_language) $feed_language = 'english';
 347
 348                 $feed = db_escape_string($feed);
 349
 350                 $date_feed_processed = date('Y-m-d H:i');
 351
 352                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 353
 354                 $pluginhost = new PluginHost();
 355                 $pluginhost->set_debug($debug_enabled);
 356                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 357
 358                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 359                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 360                 $pluginhost->load_data();
 361
 362                 if ($rss && is_object($rss) && get_class($rss) == "FeedParser") {
 363                         _debug("using previously initialized parser object");
 364                 } else {
 365                         $rss_hash = false;
 366
 367                         $force_refetch = isset($_REQUEST["force_refetch"]);
 368                         $feed_data = "";
 369
 370                         foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
 371                                 $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, 0, $auth_login, $auth_pass);
 372                         }
 373
 374                         // try cache
 375                         if (!$feed_data &&
 376                                 file_exists($cache_filename) &&
 377                                 is_readable($cache_filename) &&
 378                                 !$auth_login && !$auth_pass &&
 379                                 filemtime($cache_filename) > time() - 30) {
 380
 381                                 _debug("using local cache [$cache_filename].", $debug_enabled);
 382
 383                                 @$feed_data = file_get_contents($cache_filename);
 384
 385                                 if ($feed_data) {
 386                                         $rss_hash = sha1($feed_data);
 387                                 }
 388
 389                         } else {
 390                                 _debug("local cache will not be used for this feed", $debug_enabled);
 391                         }
 392
 393                         // fetch feed from source
 394                         if (!$feed_data) {
 395                                 _debug("fetching [$fetch_url]...", $debug_enabled);
 396
 397                                 if (ini_get("open_basedir") && function_exists("curl_init")) {
 398                                         _debug("not using CURL due to open_basedir restrictions");
 399                                 }
 400
 401                                 $feed_data = fetch_file_contents($fetch_url, false,
 402                                         $auth_login, $auth_pass, false,
 403                                         $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 404                                         0);
 405
 406                                 global $fetch_curl_used;
 407
 408                                 if (!$fetch_curl_used) {
 409                                         $tmp = @gzdecode($feed_data);
 410
 411                                         if ($tmp) $feed_data = $tmp;
 412                                 }
 413
 414                                 $feed_data = trim($feed_data);
 415
 416                                 _debug("fetch done.", $debug_enabled);
 417
 418                                 // cache vanilla feed data for re-use
 419                                 if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 420                                         $new_rss_hash = sha1($feed_data);
 421
 422                                         if ($new_rss_hash != $rss_hash) {
 423                                                 _debug("saving $cache_filename", $debug_enabled);
 424                                                 @file_put_contents($cache_filename, $feed_data);
 425                                         }
 426                                 }
 427                         }
 428
 429                         if (!$feed_data) {
 430                                 global $fetch_last_error;
 431                                 global $fetch_last_error_code;
 432
 433                                 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 434
 435                                 $error_escaped = '';
 436
 437                                 // If-Modified-Since
 438                                 if ($fetch_last_error_code != 304) {
 439                                         $error_escaped = db_escape_string($fetch_last_error);
 440                                 } else {
 441                                         _debug("source claims data not modified, nothing to do.", $debug_enabled);
 442                                 }
 443
 444                                 db_query(
 445                                         "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 446                                                 last_updated = NOW() WHERE id = '$feed'");
 447
 448                                 return;
 449                         }
 450                 }
 451
 452                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 453                         $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
 454                 }
 455
 456                 // set last update to now so if anything *simplepie* crashes later we won't be
 457                 // continuously failing on the same feed
 458                 //db_query("UPDATE ttrss_feeds SET last_updated = NOW() WHERE id = '$feed'");
 459
 460                 if (!$rss) {
 461                         $rss = new FeedParser($feed_data);
 462                         $rss->init();
 463                 }
 464
 465 //              print_r($rss);
 466
 467                 $feed = db_escape_string($feed);
 468
 469                 if (!$rss->error()) {
 470
 471                         // We use local pluginhost here because we need to load different per-user feed plugins
 472                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 473
 474                         _debug("language: $feed_language", $debug_enabled);
 475                         _debug("processing feed data...", $debug_enabled);
 476
 477 //                      db_query("BEGIN");
 478
 479                         if (DB_TYPE == "pgsql") {
 480                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 481                         } else {
 482                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 483                         }
 484
 485                         $result = db_query("SELECT owner_uid,favicon_avg_color,
 486                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 487                                                 favicon_needs_check
 488                                 FROM ttrss_feeds WHERE id = '$feed'");
 489
 490                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 491                                 "favicon_needs_check"));
 492                         $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
 493
 494                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 495
 496                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 497
 498                         _debug("site_url: $site_url", $debug_enabled);
 499                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 500
 501                         if ($favicon_needs_check || $force_refetch) {
 502
 503                                 /* terrible hack: if we crash on floicon shit here, we won't check
 504                                  * the icon avgcolor again (unless the icon got updated) */
 505
 506                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 507                                 $favicon_modified = @filemtime($favicon_file);
 508
 509                                 _debug("checking favicon...", $debug_enabled);
 510
 511                                 check_feed_favicon($site_url, $feed);
 512                                 $favicon_modified_new = @filemtime($favicon_file);
 513
 514                                 if ($favicon_modified_new > $favicon_modified)
 515                                         $favicon_avg_color = '';
 516
 517                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 518                                                 require_once "colors.php";
 519
 520                                                 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 521                                                         id = '$feed'");
 522
 523                                                 $favicon_color = db_escape_string(
 524                                                         calculate_avg_color($favicon_file));
 525
 526                                                 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
 527                                 } else if ($favicon_avg_color == 'fail') {
 528                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 529                                 }
 530
 531                                 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 532                                         $favicon_colorstring
 533                                         WHERE id = '$feed'");
 534                         }
 535
 536                         _debug("loading filters & labels...", $debug_enabled);
 537
 538                         $filters = load_filters($feed, $owner_uid);
 539
 540                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 541
 542                         $items = $rss->get_items();
 543
 544                         if (!is_array($items)) {
 545                                 _debug("no articles found.", $debug_enabled);
 546
 547                                 db_query("UPDATE ttrss_feeds
 548                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 549
 550                                 return; // no articles
 551                         }
 552
 553                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 554
 555                                 _debug("checking for PUSH hub...", $debug_enabled);
 556
 557                                 $feed_hub_url = false;
 558
 559                                 $links = $rss->get_links('hub');
 560
 561                                 if ($links && is_array($links)) {
 562                                         foreach ($links as $l) {
 563                                                 $feed_hub_url = $l;
 564                                                 break;
 565                                         }
 566                                 }
 567
 568                                 _debug("feed hub url: $feed_hub_url", $debug_enabled);
 569
 570                                 $feed_self_url = $fetch_url;
 571
 572                                 $links = $rss->get_links('self');
 573
 574                                 if ($links && is_array($links)) {
 575                                         foreach ($links as $l) {
 576                                                 $feed_self_url = $l;
 577                                                 break;
 578                                         }
 579                                 }
 580
 581                                 _debug("feed self url = $feed_self_url");
 582
 583                                 if ($feed_hub_url && $feed_self_url && function_exists('curl_init') &&
 584                                         !ini_get("open_basedir")) {
 585
 586                                         require_once 'lib/pubsubhubbub/subscriber.php';
 587
 588                                         $callback_url = get_self_url_prefix() .
 589                                                 "/public.php?op=pubsub&id=$feed";
 590
 591                                         $s = new Subscriber($feed_hub_url, $callback_url);
 592
 593                                         $rc = $s->subscribe($feed_self_url);
 594
 595                                         _debug("feed hub url found, subscribe request sent. [rc=$rc]", $debug_enabled);
 596
 597                                         db_query("UPDATE ttrss_feeds SET pubsub_state = 1
 598                                                 WHERE id = '$feed'");
 599                                 }
 600                         }
 601
 602                         _debug("processing articles...", $debug_enabled);
 603
 604                         $tstart = time();
 605
 606                         foreach ($items as $item) {
 607                                 if ($_REQUEST['xdebug'] == 3) {
 608                                         print_r($item);
 609                                 }
 610
 611                                 if (ini_get("max_execution_time") > 0 && time() - $tstart >= ini_get("max_execution_time") * 0.7) {
 612                                         _debug("looks like there's too many articles to process at once, breaking out", $debug_enabled);
 613                                         break;
 614                                 }
 615
 616                                 $entry_guid = $item->get_id();
 617                                 if (!$entry_guid) $entry_guid = $item->get_link();
 618                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 619                                 if (!$entry_guid) continue;
 620
 621                                 $entry_guid = "$owner_uid,$entry_guid";
 622
 623                                 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
 624
 625                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 626
 627                                 $entry_timestamp = "";
 628
 629                                 $entry_timestamp = $item->get_date();
 630
 631                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 632
 633                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 634                                         $entry_timestamp = time();
 635                                 }
 636
 637                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 638
 639                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 640
 641 //                              $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
 642 //                              $entry_title = decode_numeric_entities($entry_title);
 643                                 $entry_title = $item->get_title();
 644
 645                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 646
 647                                 _debug("title $entry_title", $debug_enabled);
 648                                 _debug("link $entry_link", $debug_enabled);
 649
 650                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 651
 652                                 $entry_content = $item->get_content();
 653                                 if (!$entry_content) $entry_content = $item->get_description();
 654
 655                                 if ($_REQUEST["xdebug"] == 2) {
 656                                         print "content: ";
 657                                         print htmlspecialchars($entry_content);
 658                                         print "\n";
 659                                 }
 660
 661                                 $entry_comments = $item->get_comments_url();
 662                                 $entry_author = $item->get_author();
 663
 664                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 665
 666                                 $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
 667                                 $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
 668
 669                                 $num_comments = (int) $item->get_comments_count();
 670
 671                                 _debug("author $entry_author", $debug_enabled);
 672                                 _debug("num_comments: $num_comments", $debug_enabled);
 673                                 _debug("looking for tags...", $debug_enabled);
 674
 675                                 // parse <category> entries into tags
 676
 677                                 $additional_tags = array();
 678
 679                                 $additional_tags_src = $item->get_categories();
 680
 681                                 if (is_array($additional_tags_src)) {
 682                                         foreach ($additional_tags_src as $tobj) {
 683                                                 array_push($additional_tags, $tobj);
 684                                         }
 685                                 }
 686
 687                                 $entry_tags = array_unique($additional_tags);
 688
 689                                 for ($i = 0; $i < count($entry_tags); $i++)
 690                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 691
 692                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 693
 694                                 _debug("done collecting data.", $debug_enabled);
 695
 696                                 $result = db_query("SELECT id, content_hash, lang FROM ttrss_entries
 697                                         WHERE guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed'");
 698
 699                                 if (db_num_rows($result) != 0) {
 700                                         $base_entry_id = db_fetch_result($result, 0, "id");
 701                                         $entry_stored_hash = db_fetch_result($result, 0, "content_hash");
 702                                         $article_labels = get_article_labels($base_entry_id, $owner_uid);
 703                                         $entry_language = db_fetch_result($result, 0, "lang");
 704
 705                                         $existing_tags = get_article_tags($base_entry_id, $owner_uid);
 706                                         $entry_tags = array_unique(array_merge($entry_tags, $existing_tags));
 707
 708                                 } else {
 709                                         $base_entry_id = false;
 710                                         $entry_stored_hash = "";
 711                                         $article_labels = array();
 712                                         $entry_language = "";
 713                                 }
 714
 715                                 $article = array("owner_uid" => $owner_uid, // read only
 716                                         "guid" => $entry_guid, // read only
 717                                         "guid_hashed" => $entry_guid_hashed, // read only
 718                                         "title" => $entry_title,
 719                                         "content" => $entry_content,
 720                                         "link" => $entry_link,
 721                                         "labels" => $article_labels, // current limitation: can add labels to article, can't remove them
 722                                         "tags" => $entry_tags,
 723                                         "author" => $entry_author,
 724                                         "force_catchup" => false, // ugly hack for the time being
 725                                         "score_modifier" => 0, // no previous value, plugin should recalculate score modifier based on content if needed
 726                                         "language" => $entry_language,
 727                                         "feed" => array("id" => $feed,
 728                                                 "fetch_url" => $fetch_url,
 729                                                 "site_url" => $site_url,
 730                                                 "cache_images" => $cache_images)
 731                                         );
 732
 733                                 $entry_plugin_data = "";
 734                                 $entry_current_hash = calculate_article_hash($article, $pluginhost);
 735
 736                                 _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
 737
 738                                 if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
 739                                         _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
 740
 741                                         // we keep encountering the entry in feeds, so we need to
 742                                         // update date_updated column so that we don't get horrible
 743                                         // dupes when the entry gets purged and reinserted again e.g.
 744                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 745
 746                                         $base_entry_id = db_fetch_result($result, 0, "id");
 747
 748                                         db_query("UPDATE ttrss_entries SET date_updated = NOW()
 749                                                 WHERE id = '$base_entry_id'");
 750
 751                                         continue;
 752                                 }
 753
 754                                 _debug("hash differs, applying plugin filters:", $debug_enabled);
 755
 756                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 757                                         _debug("... " . get_class($plugin), $debug_enabled);
 758
 759                                         $start = microtime(true);
 760                                         $article = $plugin->hook_article_filter($article);
 761
 762                                         _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 763
 764                                         $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
 765                                 }
 766
 767                                 if ($_REQUEST["xdebug"] == 2) {
 768                                         print "processed content: ";
 769                                         print htmlspecialchars($article["content"]);
 770                                         print "\n";
 771                                 }
 772
 773                                 $entry_plugin_data = db_escape_string($entry_plugin_data);
 774
 775                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 776
 777                                 // Workaround: 4-byte unicode requires utf8mb4 in MySQL. See https://tt-rss.org/forum/viewtopic.php?f=1&t=3377&p=20077#p20077
 778                                 if (DB_TYPE == "mysql") {
 779                                         foreach ($article as $k => $v) {
 780
 781                                                 // i guess we'll have to take the risk of 4byte unicode labels & tags here
 782                                                 if (is_string($article[$k])) {
 783                                                         $article[$k] = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $v);
 784                                                 }
 785                                         }
 786                                 }
 787
 788                                 /* Collect article tags here so we could filter by them: */
 789
 790                                 $article_filters = get_article_filters($filters, $article["title"],
 791                                         $article["content"], $article["link"], 0, $article["author"],
 792                                         $article["tags"]);
 793
 794                                 if ($debug_enabled) {
 795                                         _debug("article filters: ", $debug_enabled);
 796                                         if (count($article_filters) != 0) {
 797                                                 print_r($article_filters);
 798                                         }
 799                                 }
 800
 801                                 $plugin_filter_names = find_article_filters($article_filters, "plugin");
 802                                 $plugin_filter_actions = $pluginhost->get_filter_actions();
 803
 804                                 if (count($plugin_filter_names) > 0) {
 805                                         _debug("applying plugin filter actions...", $debug_enabled);
 806
 807                                         foreach ($plugin_filter_names as $pfn) {
 808                                                 list($pfclass,$pfaction) = explode(":", $pfn["param"]);
 809
 810                                                 if (isset($plugin_filter_actions[$pfclass])) {
 811                                                         $plugin = $pluginhost->get_plugin($pfclass);
 812
 813                                                         _debug("... $pfclass: $pfaction", $debug_enabled);
 814
 815                                                         if ($plugin) {
 816                                                                 $start = microtime(true);
 817                                                                 $article = $plugin->hook_article_filter_action($article, $pfaction);
 818
 819                                                                 _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 820                                                         } else {
 821                                                                 _debug("??? $pfclass: plugin object not found.");
 822                                                         }
 823                                                 } else {
 824                                                         _debug("??? $pfclass: filter plugin not registered.");
 825                                                 }
 826                                         }
 827                                 }
 828
 829                                 $entry_tags = $article["tags"];
 830                                 $entry_guid = db_escape_string($entry_guid);
 831                                 $entry_title = db_escape_string($article["title"]);
 832                                 $entry_author = db_escape_string($article["author"]);
 833                                 $entry_link = db_escape_string($article["link"]);
 834                                 $entry_content = $article["content"]; // escaped below
 835                                 $entry_force_catchup = $article["force_catchup"];
 836                                 $article_labels = $article["labels"];
 837                                 $entry_score_modifier = (int) $article["score_modifier"];
 838                                 $entry_language = db_escape_string($article["language"]);
 839
 840                                 if ($debug_enabled) {
 841                                         _debug("article labels:", $debug_enabled);
 842                                         print_r($article_labels);
 843                                 }
 844
 845                                 _debug("force catchup: $entry_force_catchup");
 846
 847                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 848                                         cache_images($entry_content, $site_url, $debug_enabled);
 849
 850                                 $entry_content = db_escape_string($entry_content, false);
 851
 852                                 //db_query("BEGIN");
 853
 854                                 $result = db_query("SELECT id FROM      ttrss_entries
 855                                         WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
 856
 857                                 if (db_num_rows($result) == 0) {
 858
 859                                         _debug("base guid [$entry_guid] not found", $debug_enabled);
 860
 861                                         // base post entry does not exist, create it
 862
 863                                         $result = db_query(
 864                                                 "INSERT INTO ttrss_entries
 865                                                         (title,
 866                                                         guid,
 867                                                         link,
 868                                                         updated,
 869                                                         content,
 870                                                         content_hash,
 871                                                         no_orig_date,
 872                                                         date_updated,
 873                                                         date_entered,
 874                                                         comments,
 875                                                         num_comments,
 876                                                         plugin_data,
 877                                                         lang,
 878                                                         author)
 879                                                 VALUES
 880                                                         ('$entry_title',
 881                                                         '$entry_guid_hashed',
 882                                                         '$entry_link',
 883                                                         '$entry_timestamp_fmt',
 884                                                         '$entry_content',
 885                                                         '$entry_current_hash',
 886                                                         false,
 887                                                         NOW(),
 888                                                         '$date_feed_processed',
 889                                                         '$entry_comments',
 890                                                         '$num_comments',
 891                                                         '$entry_plugin_data',
 892                                                         '$entry_language',
 893                                                         '$entry_author')");
 894
 895                                 } else {
 896                                         $base_entry_id = db_fetch_result($result, 0, "id");
 897                                 }
 898
 899                                 // now it should exist, if not - bad luck then
 900
 901                                 $result = db_query("SELECT id FROM ttrss_entries
 902                                         WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 903
 904                                 $entry_ref_id = 0;
 905                                 $entry_int_id = 0;
 906
 907                                 if (db_num_rows($result) == 1) {
 908
 909                                         _debug("base guid found, checking for user record", $debug_enabled);
 910
 911                                         $ref_id = db_fetch_result($result, 0, "id");
 912                                         $entry_ref_id = $ref_id;
 913
 914                                         /* $stored_guid = db_fetch_result($result, 0, "guid");
 915                                         if ($stored_guid != $entry_guid_hashed) {
 916                                                 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
 917
 918                                                 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
 919                                                         id = '$ref_id'");
 920                                         } */
 921
 922                                         if (find_article_filter($article_filters, "filter")) {
 923                                                 //db_query("COMMIT"); // close transaction in progress
 924                                                 continue;
 925                                         }
 926
 927                                         $score = calculate_article_score($article_filters) + $entry_score_modifier;
 928
 929                                         _debug("initial score: $score [including plugin modifier: $entry_score_modifier]", $debug_enabled);
 930
 931                                         // check for user post link to main table
 932
 933                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 934                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'";
 935
 936 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 937
 938                                         $result = db_query($query);
 939
 940                                         // okay it doesn't exist - create user entry
 941                                         if (db_num_rows($result) == 0) {
 942
 943                                                 _debug("user record not found, creating...", $debug_enabled);
 944
 945                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup') && !$entry_force_catchup) {
 946                                                         $unread = 'true';
 947                                                         $last_read_qpart = 'NULL';
 948                                                 } else {
 949                                                         $unread = 'false';
 950                                                         $last_read_qpart = 'NOW()';
 951                                                 }
 952
 953                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 954                                                         $marked = 'true';
 955                                                 } else {
 956                                                         $marked = 'false';
 957                                                 }
 958
 959                                                 if (find_article_filter($article_filters, 'publish')) {
 960                                                         $published = 'true';
 961                                                 } else {
 962                                                         $published = 'false';
 963                                                 }
 964
 965                                                 // N-grams
 966
 967                                                 /* if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 968
 969                                                         $result = db_query("SELECT COUNT(*) AS similar FROM
 970                                                                         ttrss_entries,ttrss_user_entries
 971                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 972                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 973                                                                         AND owner_uid = $owner_uid");
 974
 975                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 976
 977                                                         _debug("N-gram similar results: $ngram_similar", $debug_enabled);
 978
 979                                                         if ($ngram_similar > 0) {
 980                                                                 $unread = 'false';
 981                                                         }
 982                                                 } */
 983
 984                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 985                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 986
 987                                                 $result = db_query(
 988                                                         "INSERT INTO ttrss_user_entries
 989                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 990                                                                 published, score, tag_cache, label_cache, uuid,
 991                                                                 last_marked, last_published)
 992                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 993                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 994                                                                 '', $last_marked, $last_published)");
 995
 996                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 997                                                         $rss_link = get_self_url_prefix() .
 998                                                                 "/public.php?op=rss&id=-2&key=" .
 999                                                                 get_feed_access_key(-2, false, $owner_uid);
1000
1001                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
1002
1003                                                         /* $pubsub_result = */ $p->publish_update($rss_link);
1004                                                 }
1005
1006                                                 $result = db_query(
1007                                                         "SELECT int_id FROM ttrss_user_entries WHERE
1008                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
1009                                                                 feed_id = '$feed' LIMIT 1");
1010
1011                                                 if (db_num_rows($result) == 1) {
1012                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
1013                                                 }
1014                                         } else {
1015                                                 _debug("user record FOUND", $debug_enabled);
1016
1017                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
1018                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
1019                                         }
1020
1021                                         _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
1022
1023                                         if (DB_TYPE == "pgsql") {
1024                                            $tsvector_combined = db_escape_string(mb_substr($entry_title . ' ' . strip_tags(str_replace('<', ' <', $entry_content)),
1025                                                         0, 1000000));
1026
1027                                                 $tsvector_qpart = "tsvector_combined = to_tsvector('$feed_language', '$tsvector_combined'),";
1028
1029                                         } else {
1030                                                 $tsvector_qpart = "";
1031                                         }
1032
1033                                         db_query("UPDATE ttrss_entries
1034                                                 SET title = '$entry_title',
1035                                                         content = '$entry_content',
1036                                                         content_hash = '$entry_current_hash',
1037                                                         updated = '$entry_timestamp_fmt',
1038                                                         $tsvector_qpart
1039                                                         num_comments = '$num_comments',
1040                                                         plugin_data = '$entry_plugin_data',
1041                                                         author = '$entry_author',
1042                                                         lang = '$entry_language'
1043                                                 WHERE id = '$ref_id'");
1044
1045                                         // update aux data
1046                                         db_query("UPDATE ttrss_user_entries
1047                                                         SET score = '$score' WHERE ref_id = '$ref_id'");
1048
1049                                         if ($mark_unread_on_update) {
1050                                                 _debug("article updated, marking unread as requested.", $debug_enabled);
1051
1052                                                 db_query("UPDATE ttrss_user_entries
1053                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
1054                                         }
1055                                 }
1056
1057                                 //db_query("COMMIT");
1058
1059                                 _debug("assigning labels [other]...", $debug_enabled);
1060
1061                                 foreach ($article_labels as $label) {
1062                                         label_add_article($entry_ref_id, $label[1], $owner_uid);
1063                                 }
1064
1065                                 _debug("assigning labels [filters]...", $debug_enabled);
1066
1067                                 assign_article_to_label_filters($entry_ref_id, $article_filters,
1068                                         $owner_uid, $article_labels);
1069
1070                                 _debug("looking for enclosures...", $debug_enabled);
1071
1072                                 // enclosures
1073
1074                                 $enclosures = array();
1075
1076                                 $encs = $item->get_enclosures();
1077
1078                                 if (is_array($encs)) {
1079                                         foreach ($encs as $e) {
1080                                                 $e_item = array(
1081                                                         $e->link, $e->type, $e->length, $e->title, $e->width, $e->height);
1082                                                 array_push($enclosures, $e_item);
1083                                         }
1084                                 }
1085
1086                                 if ($debug_enabled) {
1087                                         _debug("article enclosures:", $debug_enabled);
1088                                         print_r($enclosures);
1089                                 }
1090
1091                                 //db_query("BEGIN");
1092
1093 //                              debugging
1094 //                              db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
1095
1096                                 foreach ($enclosures as $enc) {
1097                                         $enc_url = db_escape_string($enc[0]);
1098                                         $enc_type = db_escape_string($enc[1]);
1099                                         $enc_dur = db_escape_string($enc[2]);
1100                                         $enc_title = db_escape_string($enc[3]);
1101                                         $enc_width = intval($enc[4]);
1102                                         $enc_height = intval($enc[5]);
1103
1104                                         $result = db_query("SELECT id FROM ttrss_enclosures
1105                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1106
1107                                         if (db_num_rows($result) == 0) {
1108                                                 db_query("INSERT INTO ttrss_enclosures
1109                                                         (content_url, content_type, title, duration, post_id, width, height) VALUES
1110                                                         ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id', $enc_width, $enc_height)");
1111                                         }
1112                                 }
1113
1114                                 //db_query("COMMIT");
1115
1116                                 // check for manual tags (we have to do it here since they're loaded from filters)
1117
1118                                 foreach ($article_filters as $f) {
1119                                         if ($f["type"] == "tag") {
1120
1121                                                 $manual_tags = trim_array(explode(",", $f["param"]));
1122
1123                                                 foreach ($manual_tags as $tag) {
1124                                                         if (tag_is_valid($tag)) {
1125                                                                 array_push($entry_tags, $tag);
1126                                                         }
1127                                                 }
1128                                         }
1129                                 }
1130
1131                                 // Skip boring tags
1132
1133                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1134                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1135
1136                                 $filtered_tags = array();
1137                                 $tags_to_cache = array();
1138
1139                                 if ($entry_tags && is_array($entry_tags)) {
1140                                         foreach ($entry_tags as $tag) {
1141                                                 if (array_search($tag, $boring_tags) === false) {
1142                                                         array_push($filtered_tags, $tag);
1143                                                 }
1144                                         }
1145                                 }
1146
1147                                 $filtered_tags = array_unique($filtered_tags);
1148
1149                                 if ($debug_enabled) {
1150                                         _debug("filtered article tags:", $debug_enabled);
1151                                         print_r($filtered_tags);
1152                                 }
1153
1154                                 // Save article tags in the database
1155
1156                                 if (count($filtered_tags) > 0) {
1157
1158                                         //db_query("BEGIN");
1159
1160                                         foreach ($filtered_tags as $tag) {
1161
1162                                                 $tag = sanitize_tag($tag);
1163                                                 $tag = db_escape_string($tag);
1164
1165                                                 if (!tag_is_valid($tag)) continue;
1166
1167                                                 $result = db_query("SELECT id FROM ttrss_tags
1168                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1169                                                         owner_uid = '$owner_uid' LIMIT 1");
1170
1171                                                         if ($result && db_num_rows($result) == 0) {
1172
1173                                                                 db_query("INSERT INTO ttrss_tags
1174                                                                         (owner_uid,tag_name,post_int_id)
1175                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1176                                                         }
1177
1178                                                 array_push($tags_to_cache, $tag);
1179                                         }
1180
1181                                         /* update the cache */
1182
1183                                         $tags_to_cache = array_unique($tags_to_cache);
1184
1185                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1186
1187                                         db_query("UPDATE ttrss_user_entries
1188                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1189                                                 AND owner_uid = $owner_uid");
1190
1191                                         //db_query("COMMIT");
1192                                 }
1193
1194                                 _debug("article processed", $debug_enabled);
1195                         }
1196
1197                         _debug("purging feed...", $debug_enabled);
1198
1199                         purge_feed($feed, 0, $debug_enabled);
1200
1201                         db_query("UPDATE ttrss_feeds
1202                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1203
1204 //                      db_query("COMMIT");
1205
1206                 } else {
1207
1208                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1209
1210                         _debug("fetch error: $error_msg", $debug_enabled);
1211
1212                         if (count($rss->errors()) > 1) {
1213                                 foreach ($rss->errors() as $error) {
1214                                         _debug("+ $error");
1215                                 }
1216                         }
1217
1218                         db_query(
1219                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1220                                 last_updated = NOW() WHERE id = '$feed'");
1221
1222                         unset($rss);
1223                 }
1224
1225                 _debug("done", $debug_enabled);
1226
1227                 return $rss;
1228         }
1229
1230         function cache_images($html, $site_url, $debug) {
1231                 libxml_use_internal_errors(true);
1232
1233                 $charset_hack = '<head>
1234                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1235                 </head>';
1236
1237                 $doc = new DOMDocument();
1238                 $doc->loadHTML($charset_hack . $html);
1239                 $xpath = new DOMXPath($doc);
1240
1241                 $entries = $xpath->query('(//img[@src])');
1242
1243                 foreach ($entries as $entry) {
1244                         if ($entry->hasAttribute('src')) {
1245                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1246
1247                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1248
1249                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1250
1251                                 if (!file_exists($local_filename)) {
1252                                         $file_content = fetch_file_contents($src);
1253
1254                                         if ($file_content && strlen($file_content) > _MIN_CACHE_IMAGE_SIZE) {
1255                                                 file_put_contents($local_filename, $file_content);
1256                                         }
1257                                 } else {
1258                                         touch($local_filename);
1259                                 }
1260                         }
1261                 }
1262         }
1263
1264         function expire_error_log($debug) {
1265                 if ($debug) _debug("Removing old error log entries...");
1266
1267                 if (DB_TYPE == "pgsql") {
1268                         db_query("DELETE FROM ttrss_error_log
1269                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1270                 } else {
1271                         db_query("DELETE FROM ttrss_error_log
1272                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1273                 }
1274
1275         }
1276
1277         function expire_lock_files($debug) {
1278                 //if ($debug) _debug("Removing old lock files...");
1279
1280                 $num_deleted = 0;
1281
1282                 if (is_writable(LOCK_DIRECTORY)) {
1283                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1284
1285                         if ($files) {
1286                                 foreach ($files as $file) {
1287                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1288                                                 unlink($file);
1289                                                 ++$num_deleted;
1290                                         }
1291                                 }
1292                         }
1293                 }
1294
1295                 if ($debug) _debug("Removed $num_deleted old lock files.");
1296         }
1297
1298         function expire_cached_files($debug) {
1299                 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1300                         $cache_dir = CACHE_DIR . "/$dir";
1301
1302 //                      if ($debug) _debug("Expiring $cache_dir");
1303
1304                         $num_deleted = 0;
1305
1306                         if (is_writable($cache_dir)) {
1307                                 $files = glob("$cache_dir/*");
1308
1309                                 if ($files) {
1310                                         foreach ($files as $file) {
1311                                                 if (time() - filemtime($file) > 86400*7) {
1312                                                         unlink($file);
1313
1314                                                         ++$num_deleted;
1315                                                 }
1316                                         }
1317                                 }
1318                         }
1319
1320                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1321                 }
1322         }
1323
1324         /**
1325         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1326         * Returns the url query as associative array
1327         *
1328         * @param    string    query
1329         * @return    array    params
1330         */
1331         function convertUrlQuery($query) {
1332                 $queryParts = explode('&', $query);
1333
1334                 $params = array();
1335
1336                 foreach ($queryParts as $param) {
1337                         $item = explode('=', $param);
1338                         $params[$item[0]] = $item[1];
1339                 }
1340
1341                 return $params;
1342         }
1343
1344         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1345                 $matches = array();
1346
1347                 foreach ($filters as $filter) {
1348                         $match_any_rule = $filter["match_any_rule"];
1349                         $inverse = $filter["inverse"];
1350                         $filter_match = false;
1351
1352                         foreach ($filter["rules"] as $rule) {
1353                                 $match = false;
1354                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1355                                 $rule_inverse = $rule["inverse"];
1356
1357                                 if (!$reg_exp)
1358                                         continue;
1359
1360                                 switch ($rule["type"]) {
1361                                 case "title":
1362                                         $match = @preg_match("/$reg_exp/i", $title);
1363                                         break;
1364                                 case "content":
1365                                         // we don't need to deal with multiline regexps
1366                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1367
1368                                         $match = @preg_match("/$reg_exp/i", $content);
1369                                         break;
1370                                 case "both":
1371                                         // we don't need to deal with multiline regexps
1372                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1373
1374                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1375                                         break;
1376                                 case "link":
1377                                         $match = @preg_match("/$reg_exp/i", $link);
1378                                         break;
1379                                 case "author":
1380                                         $match = @preg_match("/$reg_exp/i", $author);
1381                                         break;
1382                                 case "tag":
1383                                         foreach ($tags as $tag) {
1384                                                 if (@preg_match("/$reg_exp/i", $tag)) {
1385                                                         $match = true;
1386                                                         break;
1387                                                 }
1388                                         }
1389                                         break;
1390                                 }
1391
1392                                 if ($rule_inverse) $match = !$match;
1393
1394                                 if ($match_any_rule) {
1395                                         if ($match) {
1396                                                 $filter_match = true;
1397                                                 break;
1398                                         }
1399                                 } else {
1400                                         $filter_match = $match;
1401                                         if (!$match) {
1402                                                 break;
1403                                         }
1404                                 }
1405                         }
1406
1407                         if ($inverse) $filter_match = !$filter_match;
1408
1409                         if ($filter_match) {
1410                                 foreach ($filter["actions"] AS $action) {
1411                                         array_push($matches, $action);
1412
1413                                         // if Stop action encountered, perform no further processing
1414                                         if (isset($action["type"]) && $action["type"] == "stop") return $matches;
1415                                 }
1416                         }
1417                 }
1418
1419                 return $matches;
1420         }
1421
1422         function find_article_filter($filters, $filter_name) {
1423                 foreach ($filters as $f) {
1424                         if ($f["type"] == $filter_name) {
1425                                 return $f;
1426                         };
1427                 }
1428                 return false;
1429         }
1430
1431         function find_article_filters($filters, $filter_name) {
1432                 $results = array();
1433
1434                 foreach ($filters as $f) {
1435                         if ($f["type"] == $filter_name) {
1436                                 array_push($results, $f);
1437                         };
1438                 }
1439                 return $results;
1440         }
1441
1442         function calculate_article_score($filters) {
1443                 $score = 0;
1444
1445                 foreach ($filters as $f) {
1446                         if ($f["type"] == "score") {
1447                                 $score += $f["param"];
1448                         };
1449                 }
1450                 return $score;
1451         }
1452
1453         function labels_contains_caption($labels, $caption) {
1454                 foreach ($labels as $label) {
1455                         if ($label[1] == $caption) {
1456                                 return true;
1457                         }
1458                 }
1459
1460                 return false;
1461         }
1462
1463         function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1464                 foreach ($filters as $f) {
1465                         if ($f["type"] == "label") {
1466                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1467                                         label_add_article($id, $f["param"], $owner_uid);
1468                                 }
1469                         }
1470                 }
1471         }
1472
1473         function make_guid_from_title($title) {
1474                 return preg_replace("/[ \"\',.:;]/", "-",
1475                         mb_strtolower(strip_tags($title), 'utf-8'));
1476         }
1477
1478         /* function verify_feed_xml($feed_data) {
1479                 libxml_use_internal_errors(true);
1480                 $doc = new DOMDocument();
1481                 $doc->loadXML($feed_data);
1482                 $error = libxml_get_last_error();
1483                 libxml_clear_errors();
1484                 return $error;
1485         } */
1486
1487         function cleanup_counters_cache($debug) {
1488                 $result = db_query("DELETE FROM ttrss_counters_cache
1489                         WHERE feed_id > 0 AND
1490                         (SELECT COUNT(id) FROM ttrss_feeds WHERE
1491                                 id = feed_id AND
1492                                 ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid) = 0");
1493                 $frows = db_affected_rows($result);
1494
1495                 $result = db_query("DELETE FROM ttrss_cat_counters_cache
1496                         WHERE feed_id > 0 AND
1497                         (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
1498                                 id = feed_id AND
1499                                 ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid) = 0");
1500                 $crows = db_affected_rows($result);
1501
1502                 _debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
1503         }
1504
1505         function housekeeping_common($debug) {
1506                 expire_cached_files($debug);
1507                 expire_lock_files($debug);
1508                 expire_error_log($debug);
1509
1510                 $count = update_feedbrowser_cache();
1511                 _debug("Feedbrowser updated, $count feeds processed.");
1512
1513                 purge_orphans( true);
1514                 cleanup_counters_cache($debug);
1515
1516                 //$rc = cleanup_tags( 14, 50000);
1517                 //_debug("Cleaned $rc cached tags.");
1518
1519                 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1520
1521         }
1522 ?>