classes/rssutils.php

   1 <?php
   2 class RSSUtils {
   3         static function calculate_article_hash($article, $pluginhost) {
   4                 $tmp = "";
   5
   6                 foreach ($article as $k => $v) {
   7                         if ($k != "feed" && isset($v)) {
   8                                 $x = strip_tags(is_array($v) ? implode(",", $v) : $v);
   9
  10                                 //_debug("$k:" . sha1($x) . ":" . htmlspecialchars($x), true);
  11
  12                                 $tmp .= sha1("$k:" . sha1($x));
  13                         }
  14                 }
  15
  16                 return sha1(implode(",", $pluginhost->get_plugin_names()) . $tmp);
  17         }
  18
  19         static function update_feedbrowser_cache() {
  20
  21                 $pdo = Db::pdo();
  22
  23                 $sth = $pdo->query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
  24                         FROM ttrss_feeds WHERE feed_url NOT IN (SELECT feed_url FROM ttrss_feeds
  25                                 WHERE private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%')
  26                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  27
  28                 $pdo->beginTransaction();
  29
  30                 $pdo->query("DELETE FROM ttrss_feedbrowser_cache");
  31
  32                 $count = 0;
  33
  34                 while ($line = $sth->fetch()) {
  35
  36                         $subscribers = db_escape_string($line["subscribers"]);
  37                         $feed_url = db_escape_string($line["feed_url"]);
  38                         $title = db_escape_string($line["title"]);
  39                         $site_url = db_escape_string($line["site_url"]);
  40
  41                         $tmph = $pdo->prepare("SELECT subscribers FROM
  42                                 ttrss_feedbrowser_cache WHERE feed_url = ?");
  43                         $tmph->execute([$feed_url]);
  44
  45                         if (!$tmph->fetch()) {
  46
  47                                 $tmph = $pdo->prepare("INSERT INTO ttrss_feedbrowser_cache
  48                                         (feed_url, site_url, title, subscribers)
  49                                         VALUES
  50                                         (?, ?, ?, ?)");
  51
  52                                 $tmph->execute([$feed_url, $site_url, $title, $subscribers]);
  53
  54                                 ++$count;
  55
  56                         }
  57
  58                 }
  59
  60                 $pdo->commit();
  61
  62                 return $count;
  63
  64         }
  65
  66         static function update_daemon_common($limit = DAEMON_FEED_LIMIT, $debug = true) {
  67                 $schema_version = get_schema_version();
  68
  69                 if ($schema_version != SCHEMA_VERSION) {
  70                         die("Schema version is wrong, please upgrade the database.\n");
  71                 }
  72
  73                 $pdo = Db::pdo();
  74
  75                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  76                         if (DB_TYPE == "pgsql") {
  77                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  78                         } else {
  79                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  80                         }
  81                 } else {
  82                         $login_thresh_qpart = "";
  83                 }
  84
  85                 if (DB_TYPE == "pgsql") {
  86                         $update_limit_qpart = "AND ((
  87                                         ttrss_feeds.update_interval = 0
  88                                         AND ttrss_user_prefs.value != '-1'
  89                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
  90                                 ) OR (
  91                                         ttrss_feeds.update_interval > 0
  92                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
  93                                 ) OR (ttrss_feeds.last_updated IS NULL
  94                                         AND ttrss_user_prefs.value != '-1')
  95                                 OR (last_updated = '1970-01-01 00:00:00'
  96                                         AND ttrss_user_prefs.value != '-1'))";
  97                 } else {
  98                         $update_limit_qpart = "AND ((
  99                                         ttrss_feeds.update_interval = 0
 100                                         AND ttrss_user_prefs.value != '-1'
 101                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 102                                 ) OR (
 103                                         ttrss_feeds.update_interval > 0
 104                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 105                                 ) OR (ttrss_feeds.last_updated IS NULL
 106                                         AND ttrss_user_prefs.value != '-1')
 107                                 OR (last_updated = '1970-01-01 00:00:00'
 108                                         AND ttrss_user_prefs.value != '-1'))";
 109                 }
 110
 111                 // Test if feed is currently being updated by another process.
 112                 if (DB_TYPE == "pgsql") {
 113                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 114                 } else {
 115                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 116                 }
 117
 118                 $query_limit = $limit ? sprintf("LIMIT %d", $limit) : "";
 119
 120                 // Update the least recently updated feeds first
 121                 $query_order = "ORDER BY last_updated";
 122                 if (DB_TYPE == "pgsql") $query_order .= " NULLS FIRST";
 123
 124                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 125                         FROM
 126                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 127                         WHERE
 128                                 ttrss_feeds.owner_uid = ttrss_users.id
 129                                 AND ttrss_user_prefs.profile IS NULL
 130                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 131                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 132                                 $login_thresh_qpart $update_limit_qpart
 133                                 $updstart_thresh_qpart
 134                                 $query_order $query_limit";
 135
 136                 $res = $pdo->query($query);
 137
 138                 $feeds_to_update = array();
 139                 while ($line = $res->fetch()) {
 140                         array_push($feeds_to_update, $line['feed_url']);
 141                 }
 142
 143                 if ($debug) _debug(sprintf("Scheduled %d feeds to update...", count($feeds_to_update)));
 144
 145                 // Update last_update_started before actually starting the batch
 146                 // in order to minimize collision risk for parallel daemon tasks
 147                 if (count($feeds_to_update) > 0) {
 148                         $feeds_qmarks = arr_qmarks($feeds_to_update);
 149
 150                         $tmph = $pdo->prepare("UPDATE ttrss_feeds SET last_update_started = NOW()
 151                                 WHERE feed_url IN ($feeds_qmarks)");
 152                         $tmph->execute($feeds_to_update);
 153                 }
 154
 155                 $nf = 0;
 156                 $bstarted = microtime(true);
 157
 158                 $batch_owners = array();
 159
 160                 // since we have the data cached, we can deal with other feeds with the same url
 161                 $usth = $pdo->prepare("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 162                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 163                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 164                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 165                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 166                                 ttrss_user_prefs.profile IS NULL AND
 167                                 feed_url = ?
 168                                 $update_limit_qpart
 169                                 $login_thresh_qpart
 170                         ORDER BY ttrss_feeds.id $query_limit");
 171
 172                 foreach ($feeds_to_update as $feed) {
 173                         if($debug) _debug("Base feed: $feed");
 174
 175                         $usth->execute([$feed]);
 176                         //update_rss_feed($line["id"], true);
 177
 178                         if ($tline = $usth->fetch()) {
 179                                 if ($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 180
 181                                 if (array_search($tline["owner_uid"], $batch_owners) === FALSE)
 182                                         array_push($batch_owners, $tline["owner_uid"]);
 183
 184                                 $fstarted = microtime(true);
 185                                 RSSUtils::update_rss_feed($tline["id"], true, false);
 186                                 _debug_suppress(false);
 187
 188                                 _debug(sprintf("    %.4f (sec)", microtime(true) - $fstarted));
 189
 190                                 ++$nf;
 191                         }
 192                 }
 193
 194                 if ($nf > 0) {
 195                         _debug(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
 196                                 microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
 197                 }
 198
 199                 foreach ($batch_owners as $owner_uid) {
 200                         _debug("Running housekeeping tasks for user $owner_uid...");
 201
 202                         RSSUtils::housekeeping_user($owner_uid);
 203                 }
 204
 205                 // Send feed digests by email if needed.
 206                 Digest::send_headlines_digests($debug);
 207
 208                 return $nf;
 209         }
 210
 211         // this is used when subscribing
 212         static function set_basic_feed_info($feed) {
 213
 214                 $feed = db_escape_string($feed);
 215
 216                 $result = db_query("SELECT owner_uid,feed_url,auth_pass,auth_login,auth_pass_encrypted
 217                                         FROM ttrss_feeds WHERE id = '$feed'");
 218
 219                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 220
 221                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 222                         0, "auth_pass_encrypted"));
 223
 224                 $auth_login = db_fetch_result($result, 0, "auth_login");
 225                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 226
 227                 if ($auth_pass_encrypted && function_exists("mcrypt_decrypt")) {
 228                         require_once "crypt.php";
 229                         $auth_pass = decrypt_string($auth_pass);
 230                 }
 231
 232                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 233
 234                 $pluginhost = new PluginHost();
 235                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 236
 237                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 238                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 239                 $pluginhost->load_data();
 240
 241                 $basic_info = array();
 242                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_BASIC_INFO) as $plugin) {
 243                         $basic_info = $plugin->hook_feed_basic_info($basic_info, $fetch_url, $owner_uid, $feed, $auth_login, $auth_pass);
 244                 }
 245
 246                 if (!$basic_info) {
 247                         $feed_data = fetch_file_contents($fetch_url, false,
 248                                 $auth_login, $auth_pass, false,
 249                                 FEED_FETCH_TIMEOUT,
 250                                 0);
 251
 252                         global $fetch_curl_used;
 253
 254                         if (!$fetch_curl_used) {
 255                                 $tmp = @gzdecode($feed_data);
 256
 257                                 if ($tmp) $feed_data = $tmp;
 258                         }
 259
 260                         $feed_data = trim($feed_data);
 261
 262                         $rss = new FeedParser($feed_data);
 263                         $rss->init();
 264
 265                         if (!$rss->error()) {
 266                                 $basic_info = array(
 267                                         'title' => db_escape_string(mb_substr($rss->get_title(), 0, 199)),
 268                                         'site_url' => db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245))
 269                                 );
 270                         }
 271                 }
 272
 273                 if ($basic_info && is_array($basic_info)) {
 274                         $result = db_query("SELECT title, site_url FROM ttrss_feeds WHERE id = '$feed'");
 275
 276                         $registered_title = db_fetch_result($result, 0, "title");
 277                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 278
 279                         if ($basic_info['title'] && (!$registered_title || $registered_title == "[Unknown]")) {
 280                                 db_query("UPDATE ttrss_feeds SET
 281                                         title = '${basic_info['title']}' WHERE id = '$feed'");
 282                         }
 283
 284                         if ($basic_info['site_url'] && $orig_site_url != $basic_info['site_url']) {
 285                                 db_query("UPDATE ttrss_feeds SET
 286                                                         site_url = '${basic_info['site_url']}' WHERE id = '$feed'");
 287                         }
 288                 }
 289         }
 290
 291         /**
 292          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 293          */
 294         static function update_rss_feed($feed, $no_cache = 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
 304                 if (db_num_rows($result) == 0) {
 305                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 306                         user_error("Attempt to update unknown/invalid feed $feed", E_USER_WARNING);
 307                         return false;
 308                 }
 309
 310                 $title = db_fetch_result($result, 0, "title");
 311
 312                 // feed was batch-subscribed or something, we need to get basic info
 313                 // this is not optimal currently as it fetches stuff separately TODO: optimize
 314                 if ($title == "[Unknown]") {
 315                         _debug("setting basic feed info for $feed...");
 316                         RSSUtils::set_basic_feed_info($feed);
 317                 }
 318
 319                 $result = db_query("SELECT id,update_interval,auth_login,
 320                         feed_url,auth_pass,cache_images,
 321                         mark_unread_on_update, owner_uid,
 322                         auth_pass_encrypted, feed_language,
 323                         last_modified,
 324                         ".SUBSTRING_FOR_DATE."(last_unconditional, 1, 19) AS last_unconditional
 325                         FROM ttrss_feeds WHERE id = '$feed'");
 326
 327                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 328                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 329                         0, "mark_unread_on_update"));
 330                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 331                         0, "auth_pass_encrypted"));
 332
 333                 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
 334                         WHERE id = '$feed'");
 335
 336                 $auth_login = db_fetch_result($result, 0, "auth_login");
 337                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 338
 339                 if ($auth_pass_encrypted && function_exists("mcrypt_decrypt")) {
 340                         require_once "crypt.php";
 341                         $auth_pass = decrypt_string($auth_pass);
 342                 }
 343
 344                 $stored_last_modified = db_fetch_result($result, 0, "last_modified");
 345         $last_unconditional = db_fetch_result($result, 0, "last_unconditional");
 346                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 347                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 348                 $feed_language = db_escape_string(mb_strtolower(db_fetch_result($result, 0, "feed_language")));
 349                 if (!$feed_language) $feed_language = 'english';
 350
 351                 $feed = db_escape_string($feed);
 352
 353                 $date_feed_processed = date('Y-m-d H:i');
 354
 355                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 356
 357                 $pluginhost = new PluginHost();
 358                 $pluginhost->set_debug($debug_enabled);
 359                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 360
 361                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 362                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 363                 $pluginhost->load_data();
 364
 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                 global $fetch_last_modified;
 394
 395                 // fetch feed from source
 396                 if (!$feed_data) {
 397                         _debug("last unconditional update request: $last_unconditional");
 398
 399                         if (ini_get("open_basedir") && function_exists("curl_init")) {
 400                                 _debug("not using CURL due to open_basedir restrictions");
 401                         }
 402
 403             if (time() - strtotime($last_unconditional) > MAX_CONDITIONAL_INTERVAL) {
 404                 _debug("maximum allowed interval for conditional requests exceeded, forcing refetch");
 405
 406                 $force_refetch = true;
 407             } else {
 408                 _debug("stored last modified for conditional request: $stored_last_modified", $debug_enabled);
 409             }
 410
 411             _debug("fetching [$fetch_url] (force_refetch: $force_refetch)...", $debug_enabled);
 412
 413                         $feed_data = fetch_file_contents([
 414                                 "url" => $fetch_url,
 415                                 "login" => $auth_login,
 416                                 "pass" => $auth_pass,
 417                                 "timeout" => $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 418                                 "last_modified" => $force_refetch ? "" : $stored_last_modified
 419                         ]);
 420
 421                         global $fetch_curl_used;
 422
 423                         if (!$fetch_curl_used) {
 424                                 $tmp = @gzdecode($feed_data);
 425
 426                                 if ($tmp) $feed_data = $tmp;
 427                         }
 428
 429                         $feed_data = trim($feed_data);
 430
 431                         _debug("fetch done.", $debug_enabled);
 432                         _debug("source last modified: " . $fetch_last_modified, $debug_enabled);
 433
 434                         if ($feed_data && $fetch_last_modified != $stored_last_modified) {
 435                                 $last_modified_escaped = db_escape_string(substr($fetch_last_modified, 0, 245));
 436
 437                                 db_query("UPDATE ttrss_feeds SET last_modified = '$last_modified_escaped' WHERE id = '$feed'");
 438
 439                         }
 440
 441                         // cache vanilla feed data for re-use
 442                         if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 443                                 $new_rss_hash = sha1($feed_data);
 444
 445                                 if ($new_rss_hash != $rss_hash) {
 446                                         _debug("saving $cache_filename", $debug_enabled);
 447                                         @file_put_contents($cache_filename, $feed_data);
 448                                 }
 449                         }
 450                 }
 451
 452                 if (!$feed_data) {
 453                         global $fetch_last_error;
 454                         global $fetch_last_error_code;
 455
 456                         _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 457
 458                         $error_escaped = '';
 459
 460                         // If-Modified-Since
 461                         if ($fetch_last_error_code != 304) {
 462                                 $error_escaped = db_escape_string($fetch_last_error);
 463                         } else {
 464                                 _debug("source claims data not modified, nothing to do.", $debug_enabled);
 465                         }
 466
 467                         db_query(
 468                                 "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 469                                         last_updated = NOW() WHERE id = '$feed'");
 470
 471                         return;
 472                 }
 473
 474                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 475                         $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
 476                 }
 477
 478                 $rss = new FeedParser($feed_data);
 479                 $rss->init();
 480
 481                 $feed = db_escape_string($feed);
 482
 483                 if (!$rss->error()) {
 484
 485                         // We use local pluginhost here because we need to load different per-user feed plugins
 486                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 487
 488                         _debug("language: $feed_language", $debug_enabled);
 489                         _debug("processing feed data...", $debug_enabled);
 490
 491 //                      db_query("BEGIN");
 492
 493                         if (DB_TYPE == "pgsql") {
 494                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 495                         } else {
 496                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 497                         }
 498
 499                         $result = db_query("SELECT owner_uid,favicon_avg_color,
 500                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 501                                                 favicon_needs_check
 502                                 FROM ttrss_feeds WHERE id = '$feed'");
 503
 504                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 505                                 "favicon_needs_check"));
 506                         $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
 507
 508                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 509
 510                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 511
 512                         _debug("site_url: $site_url", $debug_enabled);
 513                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 514
 515                         if ($favicon_needs_check || $force_refetch) {
 516
 517                                 /* terrible hack: if we crash on floicon shit here, we won't check
 518                                  * the icon avgcolor again (unless the icon got updated) */
 519
 520                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 521                                 $favicon_modified = @filemtime($favicon_file);
 522
 523                                 _debug("checking favicon...", $debug_enabled);
 524
 525                                 RSSUtils::check_feed_favicon($site_url, $feed);
 526                                 $favicon_modified_new = @filemtime($favicon_file);
 527
 528                                 if ($favicon_modified_new > $favicon_modified)
 529                                         $favicon_avg_color = '';
 530
 531                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 532                                         require_once "colors.php";
 533
 534                                         db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 535                                                         id = '$feed'");
 536
 537                                         $favicon_color = db_escape_string(
 538                                                 calculate_avg_color($favicon_file));
 539
 540                                         $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
 541                                 } else if ($favicon_avg_color == 'fail') {
 542                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 543                                 }
 544
 545                                 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 546                                         $favicon_colorstring
 547                                         WHERE id = '$feed'");
 548                         }
 549
 550                         _debug("loading filters & labels...", $debug_enabled);
 551
 552                         $filters = load_filters($feed, $owner_uid);
 553
 554                         if ($debug_enabled) {
 555                             print_r($filters);
 556             }
 557
 558                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 559
 560                         $items = $rss->get_items();
 561
 562                         if (!is_array($items)) {
 563                                 _debug("no articles found.", $debug_enabled);
 564
 565                                 db_query("UPDATE ttrss_feeds
 566                                         SET last_updated = NOW(), last_unconditional = NOW(), last_error = '' WHERE id = '$feed'");
 567
 568                                 return; // no articles
 569                         }
 570
 571                         _debug("processing articles...", $debug_enabled);
 572
 573                         $tstart = time();
 574
 575                         foreach ($items as $item) {
 576                                 if ($_REQUEST['xdebug'] == 3) {
 577                                         print_r($item);
 578                                 }
 579
 580                                 if (ini_get("max_execution_time") > 0 && time() - $tstart >= ini_get("max_execution_time") * 0.7) {
 581                                         _debug("looks like there's too many articles to process at once, breaking out", $debug_enabled);
 582                                         break;
 583                                 }
 584
 585                                 $entry_guid = $item->get_id();
 586                                 if (!$entry_guid) $entry_guid = $item->get_link();
 587                                 if (!$entry_guid) $entry_guid = RSSUtils::make_guid_from_title($item->get_title());
 588                                 if (!$entry_guid) continue;
 589
 590                                 $entry_guid = "$owner_uid,$entry_guid";
 591
 592                                 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
 593
 594                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 595
 596                                 $entry_timestamp = "";
 597
 598                                 $entry_timestamp = $item->get_date();
 599
 600                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 601
 602                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 603                                         $entry_timestamp = time();
 604                                 }
 605
 606                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 607
 608                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 609
 610 //                              $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
 611 //                              $entry_title = decode_numeric_entities($entry_title);
 612                                 $entry_title = $item->get_title();
 613
 614                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 615
 616                                 _debug("title $entry_title", $debug_enabled);
 617                                 _debug("link $entry_link", $debug_enabled);
 618
 619                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 620
 621                                 $entry_content = $item->get_content();
 622                                 if (!$entry_content) $entry_content = $item->get_description();
 623
 624                                 if ($_REQUEST["xdebug"] == 2) {
 625                                         print "content: ";
 626                                         print htmlspecialchars($entry_content);
 627                                         print "\n";
 628                                 }
 629
 630                                 $entry_comments = db_escape_string(mb_substr($item->get_comments_url(), 0, 245));
 631                                 $num_comments = (int) $item->get_comments_count();
 632
 633                                 $entry_author = $item->get_author(); // escaped later
 634                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 635
 636                                 _debug("author $entry_author", $debug_enabled);
 637                                 _debug("num_comments: $num_comments", $debug_enabled);
 638                                 _debug("looking for tags...", $debug_enabled);
 639
 640                                 // parse <category> entries into tags
 641
 642                                 $additional_tags = array();
 643
 644                                 $additional_tags_src = $item->get_categories();
 645
 646                                 if (is_array($additional_tags_src)) {
 647                                         foreach ($additional_tags_src as $tobj) {
 648                                                 array_push($additional_tags, $tobj);
 649                                         }
 650                                 }
 651
 652                                 $entry_tags = array_unique($additional_tags);
 653
 654                                 for ($i = 0; $i < count($entry_tags); $i++)
 655                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 656
 657                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 658
 659                                 _debug("done collecting data.", $debug_enabled);
 660
 661                                 $result = db_query("SELECT id, content_hash, lang FROM ttrss_entries
 662                                         WHERE guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed'");
 663
 664                                 if (db_num_rows($result) != 0) {
 665                                         $base_entry_id = db_fetch_result($result, 0, "id");
 666                                         $entry_stored_hash = db_fetch_result($result, 0, "content_hash");
 667                                         $article_labels = Article::get_article_labels($base_entry_id, $owner_uid);
 668                                         $entry_language = db_fetch_result($result, 0, "lang");
 669
 670                                         $existing_tags = Article::get_article_tags($base_entry_id, $owner_uid);
 671                                         $entry_tags = array_unique(array_merge($entry_tags, $existing_tags));
 672
 673                                 } else {
 674                                         $base_entry_id = false;
 675                                         $entry_stored_hash = "";
 676                                         $article_labels = array();
 677                                         $entry_language = "";
 678                                 }
 679
 680                                 $article = array("owner_uid" => $owner_uid, // read only
 681                                         "guid" => $entry_guid, // read only
 682                                         "guid_hashed" => $entry_guid_hashed, // read only
 683                                         "title" => $entry_title,
 684                                         "content" => $entry_content,
 685                                         "link" => $entry_link,
 686                                         "labels" => $article_labels, // current limitation: can add labels to article, can't remove them
 687                                         "tags" => $entry_tags,
 688                                         "author" => $entry_author,
 689                                         "force_catchup" => false, // ugly hack for the time being
 690                                         "score_modifier" => 0, // no previous value, plugin should recalculate score modifier based on content if needed
 691                                         "language" => $entry_language,
 692                                         "num_comments" => $num_comments, // read only
 693                                         "feed" => array("id" => $feed,
 694                                                 "fetch_url" => $fetch_url,
 695                                                 "site_url" => $site_url,
 696                                                 "cache_images" => $cache_images)
 697                                 );
 698
 699                                 $entry_plugin_data = "";
 700                                 $entry_current_hash = RSSUtils::calculate_article_hash($article, $pluginhost);
 701
 702                                 _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
 703
 704                                 if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
 705                                         _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
 706
 707                                         // we keep encountering the entry in feeds, so we need to
 708                                         // update date_updated column so that we don't get horrible
 709                                         // dupes when the entry gets purged and reinserted again e.g.
 710                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 711
 712                                         $base_entry_id = db_fetch_result($result, 0, "id");
 713
 714                                         db_query("UPDATE ttrss_entries SET date_updated = NOW()
 715                                                 WHERE id = '$base_entry_id'");
 716
 717                                         continue;
 718                                 }
 719
 720                                 _debug("hash differs, applying plugin filters:", $debug_enabled);
 721
 722                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 723                                         _debug("... " . get_class($plugin), $debug_enabled);
 724
 725                                         $start = microtime(true);
 726                                         $article = $plugin->hook_article_filter($article);
 727
 728                                         _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 729
 730                                         $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
 731                                 }
 732
 733                                 if ($_REQUEST["xdebug"] == 2) {
 734                                         print "processed content: ";
 735                                         print htmlspecialchars($article["content"]);
 736                                         print "\n";
 737                                 }
 738
 739                                 $entry_plugin_data = db_escape_string($entry_plugin_data);
 740
 741                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 742
 743                                 // Workaround: 4-byte unicode requires utf8mb4 in MySQL. See https://tt-rss.org/forum/viewtopic.php?f=1&t=3377&p=20077#p20077
 744                                 if (DB_TYPE == "mysql") {
 745                                         foreach ($article as $k => $v) {
 746
 747                                                 // i guess we'll have to take the risk of 4byte unicode labels & tags here
 748                                                 if (is_string($article[$k])) {
 749                                                         $article[$k] = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $v);
 750                                                 }
 751                                         }
 752                                 }
 753
 754                                 /* Collect article tags here so we could filter by them: */
 755
 756                                 $matched_rules = array();
 757
 758                                 $article_filters = RSSUtils::get_article_filters($filters, $article["title"],
 759                                         $article["content"], $article["link"], $article["author"],
 760                                         $article["tags"], $matched_rules);
 761
 762                                 if ($debug_enabled) {
 763                                         _debug("matched filter rules: ", $debug_enabled);
 764
 765                                         if (count($matched_rules) != 0) {
 766                                                 print_r($matched_rules);
 767                                         }
 768
 769                                         _debug("filter actions: ", $debug_enabled);
 770
 771                                         if (count($article_filters) != 0) {
 772                                                 print_r($article_filters);
 773                                         }
 774                                 }
 775
 776                                 $plugin_filter_names = RSSUtils::find_article_filters($article_filters, "plugin");
 777                                 $plugin_filter_actions = $pluginhost->get_filter_actions();
 778
 779                                 if (count($plugin_filter_names) > 0) {
 780                                         _debug("applying plugin filter actions...", $debug_enabled);
 781
 782                                         foreach ($plugin_filter_names as $pfn) {
 783                                                 list($pfclass,$pfaction) = explode(":", $pfn["param"]);
 784
 785                                                 if (isset($plugin_filter_actions[$pfclass])) {
 786                                                         $plugin = $pluginhost->get_plugin($pfclass);
 787
 788                                                         _debug("... $pfclass: $pfaction", $debug_enabled);
 789
 790                                                         if ($plugin) {
 791                                                                 $start = microtime(true);
 792                                                                 $article = $plugin->hook_article_filter_action($article, $pfaction);
 793
 794                                                                 _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 795                                                         } else {
 796                                                                 _debug("??? $pfclass: plugin object not found.");
 797                                                         }
 798                                                 } else {
 799                                                         _debug("??? $pfclass: filter plugin not registered.");
 800                                                 }
 801                                         }
 802                                 }
 803
 804                                 $entry_tags = $article["tags"];
 805                                 $entry_guid = db_escape_string($entry_guid);
 806                                 $entry_title = db_escape_string($article["title"]);
 807                                 $entry_author = db_escape_string(mb_substr($article["author"], 0, 245));
 808                                 $entry_link = db_escape_string($article["link"]);
 809                                 $entry_content = $article["content"]; // escaped below
 810                                 $entry_force_catchup = $article["force_catchup"];
 811                                 $article_labels = $article["labels"];
 812                                 $entry_score_modifier = (int) $article["score_modifier"];
 813                                 $entry_language = db_escape_string($article["language"]);
 814
 815                                 if ($debug_enabled) {
 816                                         _debug("article labels:", $debug_enabled);
 817
 818                                         if (count($article_labels) != 0) {
 819                                                 print_r($article_labels);
 820                                         }
 821                                 }
 822
 823                                 _debug("force catchup: $entry_force_catchup");
 824
 825                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 826                                         RSSUtils::cache_media($entry_content, $site_url, $debug_enabled);
 827
 828                                 $entry_content = db_escape_string($entry_content, false);
 829
 830                                 //db_query("BEGIN");
 831
 832                                 $result = db_query("SELECT id FROM      ttrss_entries
 833                                         WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
 834
 835                                 if (db_num_rows($result) == 0) {
 836
 837                                         _debug("base guid [$entry_guid or $entry_guid_hashed] not found, creating...", $debug_enabled);
 838
 839                                         // base post entry does not exist, create it
 840
 841                                         db_query(
 842                                                 "INSERT INTO ttrss_entries
 843                                                         (title,
 844                                                         guid,
 845                                                         link,
 846                                                         updated,
 847                                                         content,
 848                                                         content_hash,
 849                                                         no_orig_date,
 850                                                         date_updated,
 851                                                         date_entered,
 852                                                         comments,
 853                                                         num_comments,
 854                                                         plugin_data,
 855                                                         lang,
 856                                                         author)
 857                                                 VALUES
 858                                                         ('$entry_title',
 859                                                         '$entry_guid_hashed',
 860                                                         '$entry_link',
 861                                                         '$entry_timestamp_fmt',
 862                                                         '$entry_content',
 863                                                         '$entry_current_hash',
 864                                                         false,
 865                                                         NOW(),
 866                                                         '$date_feed_processed',
 867                                                         '$entry_comments',
 868                                                         '$num_comments',
 869                                                         '$entry_plugin_data',
 870                                                         '$entry_language',
 871                                                         '$entry_author')");
 872
 873                                 }
 874
 875                                 // now it should exist, if not - bad luck then
 876
 877                                 $result = db_query("SELECT id FROM ttrss_entries
 878                                         WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 879
 880                                 $entry_ref_id = 0;
 881                                 $entry_int_id = 0;
 882
 883                                 if (db_num_rows($result) == 1) {
 884
 885                                         _debug("base guid found, checking for user record", $debug_enabled);
 886
 887                                         $ref_id = db_fetch_result($result, 0, "id");
 888                                         $entry_ref_id = $ref_id;
 889
 890                                         /* $stored_guid = db_fetch_result($result, 0, "guid");
 891                                         if ($stored_guid != $entry_guid_hashed) {
 892                                                 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
 893
 894                                                 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
 895                                                         id = '$ref_id'");
 896                                         } */
 897
 898                                         if (RSSUtils::find_article_filter($article_filters, "filter")) {
 899                                                 //db_query("COMMIT"); // close transaction in progress
 900                                                 continue;
 901                                         }
 902
 903                                         $score = RSSUtils::calculate_article_score($article_filters) + $entry_score_modifier;
 904
 905                                         _debug("initial score: $score [including plugin modifier: $entry_score_modifier]", $debug_enabled);
 906
 907                                         // check for user post link to main table
 908
 909                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 910                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'";
 911
 912 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 913
 914                                         $result = db_query($query);
 915
 916                                         // okay it doesn't exist - create user entry
 917                                         if (db_num_rows($result) == 0) {
 918
 919                                                 _debug("user record not found, creating...", $debug_enabled);
 920
 921                                                 if ($score >= -500 && !RSSUtils::find_article_filter($article_filters, 'catchup') && !$entry_force_catchup) {
 922                                                         $unread = 'true';
 923                                                         $last_read_qpart = 'NULL';
 924                                                 } else {
 925                                                         $unread = 'false';
 926                                                         $last_read_qpart = 'NOW()';
 927                                                 }
 928
 929                                                 if (RSSUtils::find_article_filter($article_filters, 'mark') || $score > 1000) {
 930                                                         $marked = 'true';
 931                                                 } else {
 932                                                         $marked = 'false';
 933                                                 }
 934
 935                                                 if (RSSUtils::find_article_filter($article_filters, 'publish')) {
 936                                                         $published = 'true';
 937                                                 } else {
 938                                                         $published = 'false';
 939                                                 }
 940
 941                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 942                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 943
 944                                                 $result = db_query(
 945                                                         "INSERT INTO ttrss_user_entries
 946                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 947                                                                 published, score, tag_cache, label_cache, uuid,
 948                                                                 last_marked, last_published)
 949                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 950                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 951                                                                 '', $last_marked, $last_published)");
 952
 953                                                 $result = db_query(
 954                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 955                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 956                                                                 feed_id = '$feed' LIMIT 1");
 957
 958                                                 if (db_num_rows($result) == 1) {
 959                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 960                                                 }
 961                                         } else {
 962                                                 _debug("user record FOUND", $debug_enabled);
 963
 964                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 965                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 966                                         }
 967
 968                                         _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 969
 970                                         if (DB_TYPE == "pgsql") {
 971                                                 $tsvector_combined = db_escape_string(mb_substr($entry_title . ' ' . strip_tags(str_replace('<', ' <', $entry_content)),
 972                                                         0, 1000000));
 973
 974                                                 $tsvector_qpart = "tsvector_combined = to_tsvector('$feed_language', '$tsvector_combined'),";
 975
 976                                         } else {
 977                                                 $tsvector_qpart = "";
 978                                         }
 979
 980                                         db_query("UPDATE ttrss_entries
 981                                                 SET title = '$entry_title',
 982                                                         content = '$entry_content',
 983                                                         content_hash = '$entry_current_hash',
 984                                                         updated = '$entry_timestamp_fmt',
 985                                                         $tsvector_qpart
 986                                                         num_comments = '$num_comments',
 987                                                         plugin_data = '$entry_plugin_data',
 988                                                         author = '$entry_author',
 989                                                         lang = '$entry_language'
 990                                                 WHERE id = '$ref_id'");
 991
 992                                         // update aux data
 993                                         db_query("UPDATE ttrss_user_entries
 994                                                         SET score = '$score' WHERE ref_id = '$ref_id'");
 995
 996                                         if ($mark_unread_on_update) {
 997                                                 _debug("article updated, marking unread as requested.", $debug_enabled);
 998
 999                                                 db_query("UPDATE ttrss_user_entries
1000                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
1001                                         }
1002                                 }
1003
1004                                 //db_query("COMMIT");
1005
1006                                 _debug("assigning labels [other]...", $debug_enabled);
1007
1008                                 foreach ($article_labels as $label) {
1009                                         Labels::add_article($entry_ref_id, $label[1], $owner_uid);
1010                                 }
1011
1012                                 _debug("assigning labels [filters]...", $debug_enabled);
1013
1014                                 RSSUtils::assign_article_to_label_filters($entry_ref_id, $article_filters,
1015                                         $owner_uid, $article_labels);
1016
1017                                 _debug("looking for enclosures...", $debug_enabled);
1018
1019                                 // enclosures
1020
1021                                 $enclosures = array();
1022
1023                                 $encs = $item->get_enclosures();
1024
1025                                 if (is_array($encs)) {
1026                                         foreach ($encs as $e) {
1027                                                 $e_item = array(
1028                                                         rewrite_relative_url($site_url, $e->link),
1029                                                         $e->type, $e->length, $e->title, $e->width, $e->height);
1030                                                 array_push($enclosures, $e_item);
1031                                         }
1032                                 }
1033
1034                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
1035                                         RSSUtils::cache_enclosures($enclosures, $site_url, $debug_enabled);
1036
1037                                 if ($debug_enabled) {
1038                                         _debug("article enclosures:", $debug_enabled);
1039                                         print_r($enclosures);
1040                                 }
1041
1042                                 //db_query("BEGIN");
1043
1044 //                              debugging
1045 //                              db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
1046
1047                                 foreach ($enclosures as $enc) {
1048                                         $enc_url = db_escape_string($enc[0]);
1049                                         $enc_type = db_escape_string($enc[1]);
1050                                         $enc_dur = db_escape_string($enc[2]);
1051                                         $enc_title = db_escape_string($enc[3]);
1052                                         $enc_width = intval($enc[4]);
1053                                         $enc_height = intval($enc[5]);
1054
1055                                         $result = db_query("SELECT id FROM ttrss_enclosures
1056                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1057
1058                                         if (db_num_rows($result) == 0) {
1059                                                 db_query("INSERT INTO ttrss_enclosures
1060                                                         (content_url, content_type, title, duration, post_id, width, height) VALUES
1061                                                         ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id', $enc_width, $enc_height)");
1062                                         }
1063                                 }
1064
1065                                 //db_query("COMMIT");
1066
1067                                 // check for manual tags (we have to do it here since they're loaded from filters)
1068
1069                                 foreach ($article_filters as $f) {
1070                                         if ($f["type"] == "tag") {
1071
1072                                                 $manual_tags = trim_array(explode(",", $f["param"]));
1073
1074                                                 foreach ($manual_tags as $tag) {
1075                                                         if (tag_is_valid($tag)) {
1076                                                                 array_push($entry_tags, $tag);
1077                                                         }
1078                                                 }
1079                                         }
1080                                 }
1081
1082                                 // Skip boring tags
1083
1084                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1085                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1086
1087                                 $filtered_tags = array();
1088                                 $tags_to_cache = array();
1089
1090                                 if ($entry_tags && is_array($entry_tags)) {
1091                                         foreach ($entry_tags as $tag) {
1092                                                 if (array_search($tag, $boring_tags) === false) {
1093                                                         array_push($filtered_tags, $tag);
1094                                                 }
1095                                         }
1096                                 }
1097
1098                                 $filtered_tags = array_unique($filtered_tags);
1099
1100                                 if ($debug_enabled) {
1101                                         _debug("filtered article tags:", $debug_enabled);
1102                                         print_r($filtered_tags);
1103                                 }
1104
1105                                 // Save article tags in the database
1106
1107                                 if (count($filtered_tags) > 0) {
1108
1109                                         //db_query("BEGIN");
1110
1111                                         foreach ($filtered_tags as $tag) {
1112
1113                                                 $tag = sanitize_tag($tag);
1114                                                 $tag = db_escape_string($tag);
1115
1116                                                 if (!tag_is_valid($tag)) continue;
1117
1118                                                 $result = db_query("SELECT id FROM ttrss_tags
1119                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1120                                                         owner_uid = '$owner_uid' LIMIT 1");
1121
1122                                                 if ($result && db_num_rows($result) == 0) {
1123
1124                                                         db_query("INSERT INTO ttrss_tags
1125                                                                         (owner_uid,tag_name,post_int_id)
1126                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1127                                                 }
1128
1129                                                 array_push($tags_to_cache, $tag);
1130                                         }
1131
1132                                         /* update the cache */
1133
1134                                         $tags_to_cache = array_unique($tags_to_cache);
1135
1136                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1137
1138                                         db_query("UPDATE ttrss_user_entries
1139                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1140                                                 AND owner_uid = $owner_uid");
1141
1142                                         //db_query("COMMIT");
1143                                 }
1144
1145                                 _debug("article processed", $debug_enabled);
1146                         }
1147
1148                         _debug("purging feed...", $debug_enabled);
1149
1150                         purge_feed($feed, 0, $debug_enabled);
1151
1152                         db_query("UPDATE ttrss_feeds
1153                                 SET last_updated = NOW(), last_unconditional = NOW(), last_error = '' WHERE id = '$feed'");
1154
1155 //                      db_query("COMMIT");
1156
1157                 } else {
1158
1159                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1160
1161                         _debug("fetch error: $error_msg", $debug_enabled);
1162
1163                         if (count($rss->errors()) > 1) {
1164                                 foreach ($rss->errors() as $error) {
1165                                         _debug("+ $error");
1166                                 }
1167                         }
1168
1169                         db_query(
1170                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1171                                 last_updated = NOW(), last_unconditional = NOW()   WHERE id = '$feed'");
1172
1173                         unset($rss);
1174                         return;
1175                 }
1176
1177                 _debug("done", $debug_enabled);
1178
1179                 return true;
1180         }
1181
1182         static function cache_enclosures($enclosures, $site_url, $debug) {
1183                 foreach ($enclosures as $enc) {
1184
1185                         if (preg_match("/(image|audio|video)/", $enc[1])) {
1186
1187                                 $src = rewrite_relative_url($site_url, $enc[0]);
1188
1189                                 $local_filename = CACHE_DIR . "/images/" . sha1($src);
1190
1191                                 if ($debug) _debug("cache_enclosures: downloading: $src to $local_filename");
1192
1193                                 if (!file_exists($local_filename)) {
1194                                         $file_content = fetch_file_contents($src);
1195
1196                                         if ($file_content && strlen($file_content) > MIN_CACHE_FILE_SIZE) {
1197                                                 file_put_contents($local_filename, $file_content);
1198                                         }
1199                                 } else {
1200                                         touch($local_filename);
1201                                 }
1202                         }
1203                 }
1204         }
1205
1206         static function cache_media($html, $site_url, $debug) {
1207                 libxml_use_internal_errors(true);
1208
1209                 $charset_hack = '<head>
1210                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1211                 </head>';
1212
1213                 $doc = new DOMDocument();
1214                 $doc->loadHTML($charset_hack . $html);
1215                 $xpath = new DOMXPath($doc);
1216
1217                 $entries = $xpath->query('(//img[@src])|(//video/source[@src])|(//audio/source[@src])');
1218
1219                 foreach ($entries as $entry) {
1220                         if ($entry->hasAttribute('src') && strpos($entry->getAttribute('src'), "data:") !== 0) {
1221                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1222
1223                                 $local_filename = CACHE_DIR . "/images/" . sha1($src);
1224
1225                                 if ($debug) _debug("cache_media: downloading: $src to $local_filename");
1226
1227                                 if (!file_exists($local_filename)) {
1228                                         $file_content = fetch_file_contents($src);
1229
1230                                         if ($file_content && strlen($file_content) > MIN_CACHE_FILE_SIZE) {
1231                                                 file_put_contents($local_filename, $file_content);
1232                                         }
1233                                 } else {
1234                                         touch($local_filename);
1235                                 }
1236                         }
1237                 }
1238         }
1239
1240         static function expire_error_log($debug) {
1241                 if ($debug) _debug("Removing old error log entries...");
1242
1243                 if (DB_TYPE == "pgsql") {
1244                         db_query("DELETE FROM ttrss_error_log
1245                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1246                 } else {
1247                         db_query("DELETE FROM ttrss_error_log
1248                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1249                 }
1250
1251         }
1252
1253         static function expire_lock_files($debug) {
1254                 //if ($debug) _debug("Removing old lock files...");
1255
1256                 $num_deleted = 0;
1257
1258                 if (is_writable(LOCK_DIRECTORY)) {
1259                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1260
1261                         if ($files) {
1262                                 foreach ($files as $file) {
1263                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1264                                                 unlink($file);
1265                                                 ++$num_deleted;
1266                                         }
1267                                 }
1268                         }
1269                 }
1270
1271                 if ($debug) _debug("Removed $num_deleted old lock files.");
1272         }
1273
1274         static function expire_cached_files($debug) {
1275                 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1276                         $cache_dir = CACHE_DIR . "/$dir";
1277
1278 //                      if ($debug) _debug("Expiring $cache_dir");
1279
1280                         $num_deleted = 0;
1281
1282                         if (is_writable($cache_dir)) {
1283                                 $files = glob("$cache_dir/*");
1284
1285                                 if ($files) {
1286                                         foreach ($files as $file) {
1287                                                 if (time() - filemtime($file) > 86400*CACHE_MAX_DAYS) {
1288                                                         unlink($file);
1289
1290                                                         ++$num_deleted;
1291                                                 }
1292                                         }
1293                                 }
1294                         }
1295
1296                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1297                 }
1298         }
1299
1300         /**
1301          * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1302          * Returns the url query as associative array
1303          *
1304          * @param    string    query
1305          * @return    array    params
1306          */
1307         static function convertUrlQuery($query) {
1308                 $queryParts = explode('&', $query);
1309
1310                 $params = array();
1311
1312                 foreach ($queryParts as $param) {
1313                         $item = explode('=', $param);
1314                         $params[$item[0]] = $item[1];
1315                 }
1316
1317                 return $params;
1318         }
1319
1320         static function get_article_filters($filters, $title, $content, $link, $author, $tags, &$matched_rules = false) {
1321                 $matches = array();
1322
1323                 foreach ($filters as $filter) {
1324                         $match_any_rule = $filter["match_any_rule"];
1325                         $inverse = $filter["inverse"];
1326                         $filter_match = false;
1327
1328                         foreach ($filter["rules"] as $rule) {
1329                                 $match = false;
1330                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1331                                 $rule_inverse = $rule["inverse"];
1332
1333                                 if (!$reg_exp)
1334                                         continue;
1335
1336                                 switch ($rule["type"]) {
1337                                         case "title":
1338                                                 $match = @preg_match("/$reg_exp/iu", $title);
1339                                                 break;
1340                                         case "content":
1341                                                 // we don't need to deal with multiline regexps
1342                                                 $content = preg_replace("/[\r\n\t]/", "", $content);
1343
1344                                                 $match = @preg_match("/$reg_exp/iu", $content);
1345                                                 break;
1346                                         case "both":
1347                                                 // we don't need to deal with multiline regexps
1348                                                 $content = preg_replace("/[\r\n\t]/", "", $content);
1349
1350                                                 $match = (@preg_match("/$reg_exp/iu", $title) || @preg_match("/$reg_exp/iu", $content));
1351                                                 break;
1352                                         case "link":
1353                                                 $match = @preg_match("/$reg_exp/iu", $link);
1354                                                 break;
1355                                         case "author":
1356                                                 $match = @preg_match("/$reg_exp/iu", $author);
1357                                                 break;
1358                                         case "tag":
1359                                                 foreach ($tags as $tag) {
1360                                                         if (@preg_match("/$reg_exp/iu", $tag)) {
1361                                                                 $match = true;
1362                                                                 break;
1363                                                         }
1364                                                 }
1365                                                 break;
1366                                 }
1367
1368                                 if ($rule_inverse) $match = !$match;
1369
1370                                 if ($match_any_rule) {
1371                                         if ($match) {
1372                                                 $filter_match = true;
1373                                                 break;
1374                                         }
1375                                 } else {
1376                                         $filter_match = $match;
1377                                         if (!$match) {
1378                                                 break;
1379                                         }
1380                                 }
1381                         }
1382
1383                         if ($inverse) $filter_match = !$filter_match;
1384
1385                         if ($filter_match) {
1386                                 if (is_array($matched_rules)) array_push($matched_rules, $rule);
1387
1388                                 foreach ($filter["actions"] AS $action) {
1389                                         array_push($matches, $action);
1390
1391                                         // if Stop action encountered, perform no further processing
1392                                         if (isset($action["type"]) && $action["type"] == "stop") return $matches;
1393                                 }
1394                         }
1395                 }
1396
1397                 return $matches;
1398         }
1399
1400         static function find_article_filter($filters, $filter_name) {
1401                 foreach ($filters as $f) {
1402                         if ($f["type"] == $filter_name) {
1403                                 return $f;
1404                         };
1405                 }
1406                 return false;
1407         }
1408
1409         static function find_article_filters($filters, $filter_name) {
1410                 $results = array();
1411
1412                 foreach ($filters as $f) {
1413                         if ($f["type"] == $filter_name) {
1414                                 array_push($results, $f);
1415                         };
1416                 }
1417                 return $results;
1418         }
1419
1420         static function calculate_article_score($filters) {
1421                 $score = 0;
1422
1423                 foreach ($filters as $f) {
1424                         if ($f["type"] == "score") {
1425                                 $score += $f["param"];
1426                         };
1427                 }
1428                 return $score;
1429         }
1430
1431         static function labels_contains_caption($labels, $caption) {
1432                 foreach ($labels as $label) {
1433                         if ($label[1] == $caption) {
1434                                 return true;
1435                         }
1436                 }
1437
1438                 return false;
1439         }
1440
1441         static function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1442                 foreach ($filters as $f) {
1443                         if ($f["type"] == "label") {
1444                                 if (!RSSUtils::labels_contains_caption($article_labels, $f["param"])) {
1445                                         Labels::add_article($id, $f["param"], $owner_uid);
1446                                 }
1447                         }
1448                 }
1449         }
1450
1451         static function make_guid_from_title($title) {
1452                 return preg_replace("/[ \"\',.:;]/", "-",
1453                         mb_strtolower(strip_tags($title), 'utf-8'));
1454         }
1455
1456         static function cleanup_counters_cache($debug) {
1457                 $result = db_query("DELETE FROM ttrss_counters_cache
1458                         WHERE feed_id > 0 AND
1459                         (SELECT COUNT(id) FROM ttrss_feeds WHERE
1460                                 id = feed_id AND
1461                                 ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid) = 0");
1462                 $frows = db_affected_rows($result);
1463
1464                 $result = db_query("DELETE FROM ttrss_cat_counters_cache
1465                         WHERE feed_id > 0 AND
1466                         (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
1467                                 id = feed_id AND
1468                                 ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid) = 0");
1469                 $crows = db_affected_rows($result);
1470
1471                 if ($debug) _debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
1472         }
1473
1474         static function housekeeping_user($owner_uid) {
1475                 $tmph = new PluginHost();
1476
1477                 load_user_plugins($owner_uid, $tmph);
1478
1479                 $tmph->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1480         }
1481
1482         static function housekeeping_common($debug) {
1483                 RSSUtils::expire_cached_files($debug);
1484                 RSSUtils::expire_lock_files($debug);
1485                 RSSUtils::expire_error_log($debug);
1486
1487                 $count = RSSUtils::update_feedbrowser_cache();
1488                 _debug("Feedbrowser updated, $count feeds processed.");
1489
1490                 Article::purge_orphans( true);
1491                 RSSUtils::cleanup_counters_cache($debug);
1492
1493                 //$rc = cleanup_tags( 14, 50000);
1494                 //_debug("Cleaned $rc cached tags.");
1495
1496                 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1497         }
1498
1499         static function check_feed_favicon($site_url, $feed) {
1500                 #               print "FAVICON [$site_url]: $favicon_url\n";
1501
1502                 $icon_file = ICONS_DIR . "/$feed.ico";
1503
1504                 if (!file_exists($icon_file)) {
1505                         $favicon_url = get_favicon_url($site_url);
1506
1507                         if ($favicon_url) {
1508                                 // Limiting to "image" type misses those served with text/plain
1509                                 $contents = fetch_file_contents($favicon_url); // , "image");
1510
1511                                 if ($contents) {
1512                                         // Crude image type matching.
1513                                         // Patterns gleaned from the file(1) source code.
1514                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
1515                                                 // 0       string  \000\000\001\000        MS Windows icon resource
1516                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
1517                                         }
1518                                         elseif (preg_match('/^GIF8/', $contents)) {
1519                                                 // 0       string          GIF8            GIF image data
1520                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
1521                                         }
1522                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
1523                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
1524                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
1525                                         }
1526                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
1527                                                 // 0       beshort         0xffd8          JPEG image data
1528                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
1529                                         }
1530                                         elseif (preg_match('/^BM/', $contents)) {
1531                                                 // 0    string          BM      PC bitmap (OS2, Windows BMP files)
1532                                                 //error_log("check_feed_favicon, favicon_url=$favicon_url isa BMP image");
1533                                         }
1534                                         else {
1535                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
1536                                                 $contents = "";
1537                                         }
1538                                 }
1539
1540                                 if ($contents) {
1541                                         $fp = @fopen($icon_file, "w");
1542
1543                                         if ($fp) {
1544                                                 fwrite($fp, $contents);
1545                                                 fclose($fp);
1546                                                 chmod($icon_file, 0644);
1547                                         }
1548                                 }
1549                         }
1550                         return $icon_file;
1551                 }
1552         }
1553
1554
1555
1556 }