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()) . $tmp);
  17         }
  18
  19         // Strips utf8mb4 characters (i.e. emoji) for mysql
  20         static function strip_utf8mb4($str) {
  21                 return preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $str);
  22         }
  23
  24         static function update_feedbrowser_cache() {
  25
  26                 $pdo = Db::pdo();
  27
  28                 $sth = $pdo->query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
  29                         FROM ttrss_feeds WHERE feed_url NOT IN (SELECT feed_url FROM ttrss_feeds
  30                                 WHERE private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%')
  31                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  32
  33                 $pdo->beginTransaction();
  34
  35                 $pdo->query("DELETE FROM ttrss_feedbrowser_cache");
  36
  37                 $count = 0;
  38
  39                 while ($line = $sth->fetch()) {
  40
  41                         $subscribers = $line["subscribers"];
  42                         $feed_url = $line["feed_url"];
  43                         $title = $line["title"];
  44                         $site_url = $line["site_url"];
  45
  46                         $tmph = $pdo->prepare("SELECT subscribers FROM
  47                                 ttrss_feedbrowser_cache WHERE feed_url = ?");
  48                         $tmph->execute([$feed_url]);
  49
  50                         if (!$tmph->fetch()) {
  51
  52                                 $tmph = $pdo->prepare("INSERT INTO ttrss_feedbrowser_cache
  53                                         (feed_url, site_url, title, subscribers)
  54                                         VALUES
  55                                         (?, ?, ?, ?)");
  56
  57                                 $tmph->execute([$feed_url, $site_url, $title, $subscribers]);
  58
  59                                 ++$count;
  60
  61                         }
  62
  63                 }
  64
  65                 $pdo->commit();
  66
  67                 return $count;
  68
  69         }
  70
  71         static function update_daemon_common($limit = DAEMON_FEED_LIMIT, $debug = true) {
  72                 $schema_version = get_schema_version();
  73
  74                 if ($schema_version != SCHEMA_VERSION) {
  75                         die("Schema version is wrong, please upgrade the database.\n");
  76                 }
  77
  78                 $pdo = Db::pdo();
  79
  80                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  81                         if (DB_TYPE == "pgsql") {
  82                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  83                         } else {
  84                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  85                         }
  86                 } else {
  87                         $login_thresh_qpart = "";
  88                 }
  89
  90                 if (DB_TYPE == "pgsql") {
  91                         $update_limit_qpart = "AND ((
  92                                         ttrss_feeds.update_interval = 0
  93                                         AND ttrss_user_prefs.value != '-1'
  94                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
  95                                 ) OR (
  96                                         ttrss_feeds.update_interval > 0
  97                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
  98                                 ) OR (ttrss_feeds.last_updated IS NULL
  99                                         AND ttrss_user_prefs.value != '-1')
 100                                 OR (last_updated = '1970-01-01 00:00:00'
 101                                         AND ttrss_user_prefs.value != '-1'))";
 102                 } else {
 103                         $update_limit_qpart = "AND ((
 104                                         ttrss_feeds.update_interval = 0
 105                                         AND ttrss_user_prefs.value != '-1'
 106                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 107                                 ) OR (
 108                                         ttrss_feeds.update_interval > 0
 109                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 110                                 ) OR (ttrss_feeds.last_updated IS NULL
 111                                         AND ttrss_user_prefs.value != '-1')
 112                                 OR (last_updated = '1970-01-01 00:00:00'
 113                                         AND ttrss_user_prefs.value != '-1'))";
 114                 }
 115
 116                 // Test if feed is currently being updated by another process.
 117                 if (DB_TYPE == "pgsql") {
 118                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 119                 } else {
 120                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 121                 }
 122
 123                 $query_limit = $limit ? sprintf("LIMIT %d", $limit) : "";
 124
 125                 // Update the least recently updated feeds first
 126                 $query_order = "ORDER BY last_updated";
 127                 if (DB_TYPE == "pgsql") $query_order .= " NULLS FIRST";
 128
 129                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 130                         FROM
 131                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 132                         WHERE
 133                                 ttrss_feeds.owner_uid = ttrss_users.id
 134                                 AND ttrss_user_prefs.profile IS NULL
 135                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 136                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 137                                 $login_thresh_qpart $update_limit_qpart
 138                                 $updstart_thresh_qpart
 139                                 $query_order $query_limit";
 140
 141                 $res = $pdo->query($query);
 142
 143                 $feeds_to_update = array();
 144                 while ($line = $res->fetch()) {
 145                         array_push($feeds_to_update, $line['feed_url']);
 146                 }
 147
 148                 if ($debug) _debug(sprintf("Scheduled %d feeds to update...", count($feeds_to_update)));
 149
 150                 // Update last_update_started before actually starting the batch
 151                 // in order to minimize collision risk for parallel daemon tasks
 152                 if (count($feeds_to_update) > 0) {
 153                         $feeds_qmarks = arr_qmarks($feeds_to_update);
 154
 155                         $tmph = $pdo->prepare("UPDATE ttrss_feeds SET last_update_started = NOW()
 156                                 WHERE feed_url IN ($feeds_qmarks)");
 157                         $tmph->execute($feeds_to_update);
 158                 }
 159
 160                 $nf = 0;
 161                 $bstarted = microtime(true);
 162
 163                 $batch_owners = array();
 164
 165                 // since we have the data cached, we can deal with other feeds with the same url
 166                 $usth = $pdo->prepare("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 167                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 168                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 169                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 170                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 171                                 ttrss_user_prefs.profile IS NULL AND
 172                                 feed_url = ?
 173                                 $update_limit_qpart
 174                                 $login_thresh_qpart
 175                         ORDER BY ttrss_feeds.id $query_limit");
 176
 177                 foreach ($feeds_to_update as $feed) {
 178                         if($debug) _debug("Base feed: $feed");
 179
 180                         $usth->execute([$feed]);
 181                         //update_rss_feed($line["id"], true);
 182
 183                         if ($tline = $usth->fetch()) {
 184                                 if ($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 185
 186                                 if (array_search($tline["owner_uid"], $batch_owners) === FALSE)
 187                                         array_push($batch_owners, $tline["owner_uid"]);
 188
 189                                 $fstarted = microtime(true);
 190                                 RSSUtils::update_rss_feed($tline["id"], true, false);
 191                                 _debug_suppress(false);
 192
 193                                 _debug(sprintf("    %.4f (sec)", microtime(true) - $fstarted));
 194
 195                                 ++$nf;
 196                         }
 197                 }
 198
 199                 if ($nf > 0) {
 200                         _debug(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
 201                                 microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
 202                 }
 203
 204                 foreach ($batch_owners as $owner_uid) {
 205                         _debug("Running housekeeping tasks for user $owner_uid...");
 206
 207                         RSSUtils::housekeeping_user($owner_uid);
 208                 }
 209
 210                 // Send feed digests by email if needed.
 211                 Digest::send_headlines_digests($debug);
 212
 213                 return $nf;
 214         }
 215
 216         // this is used when subscribing
 217         static function set_basic_feed_info($feed) {
 218
 219                 $pdo = Db::pdo();
 220
 221                 $sth = $pdo->prepare("SELECT owner_uid,feed_url,auth_pass,auth_login,auth_pass_encrypted
 222                                 FROM ttrss_feeds WHERE id = ?");
 223                 $sth->execute([$feed]);
 224
 225                 if ($row = $sth->fetch()) {
 226
 227                         $owner_uid = $row["owner_uid"];
 228
 229                         $auth_pass_encrypted = $row["auth_pass_encrypted"];
 230
 231                         $auth_login = $row["auth_login"];
 232                         $auth_pass = $row["auth_pass"];
 233
 234                         if ($auth_pass_encrypted && function_exists("mcrypt_decrypt")) {
 235                                 require_once "crypt.php";
 236                                 $auth_pass = decrypt_string($auth_pass);
 237                         }
 238
 239                         $fetch_url = $row["feed_url"];
 240
 241                         $pluginhost = new PluginHost();
 242                         $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 243
 244                         $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 245                         $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 246                         $pluginhost->load_data();
 247
 248                         $basic_info = array();
 249                         foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_BASIC_INFO) as $plugin) {
 250                                 $basic_info = $plugin->hook_feed_basic_info($basic_info, $fetch_url, $owner_uid, $feed, $auth_login, $auth_pass);
 251                         }
 252
 253                         if (!$basic_info) {
 254                                 $feed_data = fetch_file_contents($fetch_url, false,
 255                                         $auth_login, $auth_pass, false,
 256                                         FEED_FETCH_TIMEOUT,
 257                                         0);
 258
 259                                 global $fetch_curl_used;
 260
 261                                 if (!$fetch_curl_used) {
 262                                         $tmp = @gzdecode($feed_data);
 263
 264                                         if ($tmp) $feed_data = $tmp;
 265                                 }
 266
 267                                 $feed_data = trim($feed_data);
 268
 269                                 $rss = new FeedParser($feed_data);
 270                                 $rss->init();
 271
 272                                 if (!$rss->error()) {
 273                                         $basic_info = array(
 274                                                 'title' => mb_substr($rss->get_title(), 0, 199),
 275                                                 'site_url' => mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245)
 276                                         );
 277                                 }
 278                         }
 279
 280                         if ($basic_info && is_array($basic_info)) {
 281                                 $sth = $pdo->prepare("SELECT title, site_url FROM ttrss_feeds WHERE id = ?");
 282                                 $sth->execute([$feed]);
 283
 284                                 if ($row = $sth->fetch()) {
 285
 286                                         $registered_title = $row["title"];
 287                                         $orig_site_url = $row["site_url"];
 288
 289                                         if ($basic_info['title'] && (!$registered_title || $registered_title == "[Unknown]")) {
 290
 291                                                 $sth = $pdo->prepare("UPDATE ttrss_feeds SET
 292                                                         title = ? WHERE id = ?");
 293                                                 $sth->execute([$basic_info['title'], $feed]);
 294                                         }
 295
 296                                         if ($basic_info['site_url'] && $orig_site_url != $basic_info['site_url']) {
 297                                                 $sth = $pdo->prepare("UPDATE ttrss_feeds SET
 298                                                         site_url = ? WHERE id = ?");
 299                                                 $sth->execute([$basic_info['site_url'], $feed]);
 300                                         }
 301
 302                                 }
 303                         }
 304                 }
 305         }
 306
 307         /**
 308          * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 309          */
 310         static function update_rss_feed($feed, $no_cache = false) {
 311
 312                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || clean($_REQUEST['xdebug']);
 313
 314                 _debug_suppress(!$debug_enabled);
 315                 _debug("start", $debug_enabled);
 316
 317                 $pdo = Db::pdo();
 318
 319                 $sth = $pdo->prepare("SELECT title FROM ttrss_feeds WHERE id = ?");
 320                 $sth->execute([$feed]);
 321
 322                 if (!$row = $sth->fetch()) {
 323                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 324                         user_error("Attempt to update unknown/invalid feed $feed", E_USER_WARNING);
 325                         return false;
 326                 }
 327
 328                 $title = $row["title"];
 329
 330                 // feed was batch-subscribed or something, we need to get basic info
 331                 // this is not optimal currently as it fetches stuff separately TODO: optimize
 332                 if ($title == "[Unknown]") {
 333                         _debug("setting basic feed info for $feed...");
 334                         RSSUtils::set_basic_feed_info($feed);
 335                 }
 336
 337                 $sth = $pdo->prepare("SELECT id,update_interval,auth_login,
 338                         feed_url,auth_pass,cache_images,
 339                         mark_unread_on_update, owner_uid,
 340                         auth_pass_encrypted, feed_language,
 341                         last_modified,
 342                         ".SUBSTRING_FOR_DATE."(last_unconditional, 1, 19) AS last_unconditional
 343                         FROM ttrss_feeds WHERE id = ?");
 344                 $sth->execute([$feed]);
 345
 346                 if ($row = $sth->fetch()) {
 347
 348                         $owner_uid = $row["owner_uid"];
 349                         $mark_unread_on_update = $row["mark_unread_on_update"];
 350                         $auth_pass_encrypted = $row["auth_pass_encrypted"];
 351
 352                         $sth = $pdo->prepare("UPDATE ttrss_feeds SET last_update_started = NOW()
 353                                 WHERE id = ?");
 354                         $sth->execute([$feed]);
 355
 356                         $auth_login = $row["auth_login"];
 357                         $auth_pass = $row["auth_pass"];
 358
 359                         if ($auth_pass_encrypted && function_exists("mcrypt_decrypt")) {
 360                                 require_once "crypt.php";
 361                                 $auth_pass = decrypt_string($auth_pass);
 362                         }
 363
 364                         $stored_last_modified = $row["last_modified"];
 365                         $last_unconditional = $row["last_unconditional"];
 366                         $cache_images = $row["cache_images"];
 367                         $fetch_url = $row["feed_url"];
 368                         $feed_language = mb_strtolower($row["feed_language"]);
 369                         if (!$feed_language) $feed_language = 'english';
 370
 371                 } else {
 372                         return false;
 373                 }
 374
 375                 $date_feed_processed = date('Y-m-d H:i');
 376
 377                 $cache_filename = CACHE_DIR . "/feeds/" . sha1($fetch_url) . ".xml";
 378
 379                 $pluginhost = new PluginHost();
 380                 $pluginhost->set_debug($debug_enabled);
 381                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 382
 383                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 384                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 385                 $pluginhost->load_data();
 386
 387                 $rss_hash = false;
 388
 389                 $force_refetch = isset($_REQUEST["force_refetch"]);
 390                 $feed_data = "";
 391
 392                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
 393                         $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, 0, $auth_login, $auth_pass);
 394                 }
 395
 396                 // try cache
 397                 if (!$feed_data &&
 398                         file_exists($cache_filename) &&
 399                         is_readable($cache_filename) &&
 400                         !$auth_login && !$auth_pass &&
 401                         filemtime($cache_filename) > time() - 30) {
 402
 403                         _debug("using local cache [$cache_filename].", $debug_enabled);
 404
 405                         @$feed_data = file_get_contents($cache_filename);
 406
 407                         if ($feed_data) {
 408                                 $rss_hash = sha1($feed_data);
 409                         }
 410
 411                 } else {
 412                         _debug("local cache will not be used for this feed", $debug_enabled);
 413                 }
 414
 415                 global $fetch_last_modified;
 416
 417                 // fetch feed from source
 418                 if (!$feed_data) {
 419                         _debug("last unconditional update request: $last_unconditional");
 420
 421                         if (ini_get("open_basedir") && function_exists("curl_init")) {
 422                                 _debug("not using CURL due to open_basedir restrictions");
 423                         }
 424
 425                         if (time() - strtotime($last_unconditional) > MAX_CONDITIONAL_INTERVAL) {
 426                                 _debug("maximum allowed interval for conditional requests exceeded, forcing refetch");
 427
 428                                 $force_refetch = true;
 429                         } else {
 430                                 _debug("stored last modified for conditional request: $stored_last_modified", $debug_enabled);
 431                         }
 432
 433                         _debug("fetching [$fetch_url] (force_refetch: $force_refetch)...", $debug_enabled);
 434
 435                         $feed_data = fetch_file_contents([
 436                                 "url" => $fetch_url,
 437                                 "login" => $auth_login,
 438                                 "pass" => $auth_pass,
 439                                 "timeout" => $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 440                                 "last_modified" => $force_refetch ? "" : $stored_last_modified
 441                         ]);
 442
 443                         global $fetch_curl_used;
 444
 445                         if (!$fetch_curl_used) {
 446                                 $tmp = @gzdecode($feed_data);
 447
 448                                 if ($tmp) $feed_data = $tmp;
 449                         }
 450
 451                         $feed_data = trim($feed_data);
 452
 453                         _debug("fetch done.", $debug_enabled);
 454                         _debug("source last modified: " . $fetch_last_modified, $debug_enabled);
 455
 456                         if ($feed_data && $fetch_last_modified != $stored_last_modified) {
 457                                 $sth = $pdo->prepare("UPDATE ttrss_feeds SET last_modified = ? WHERE id = ?");
 458                                 $sth->execute([substr($fetch_last_modified, 0, 245), $feed]);
 459                         }
 460
 461                         // cache vanilla feed data for re-use
 462                         if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/feeds")) {
 463                                 $new_rss_hash = sha1($feed_data);
 464
 465                                 if ($new_rss_hash != $rss_hash) {
 466                                         _debug("saving $cache_filename", $debug_enabled);
 467                                         @file_put_contents($cache_filename, $feed_data);
 468                                 }
 469                         }
 470                 }
 471
 472                 if (!$feed_data) {
 473                         global $fetch_last_error;
 474                         global $fetch_last_error_code;
 475
 476                         _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 477
 478                         // If-Modified-Since
 479                         if ($fetch_last_error_code != 304) {
 480                                 $error_message = $fetch_last_error;
 481                         } else {
 482                                 _debug("source claims data not modified, nothing to do.", $debug_enabled);
 483                                 $error_message = "";
 484                         }
 485
 486                         $sth = $pdo->prepare("UPDATE ttrss_feeds SET last_error = ?,
 487                                         last_updated = NOW() WHERE id = ?");
 488                         $sth->execute([$error_message, $feed]);
 489
 490                         return;
 491                 }
 492
 493                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 494                         $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
 495                 }
 496
 497                 $rss = new FeedParser($feed_data);
 498                 $rss->init();
 499
 500                 if (!$rss->error()) {
 501
 502                         // We use local pluginhost here because we need to load different per-user feed plugins
 503                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 504
 505                         _debug("language: $feed_language", $debug_enabled);
 506                         _debug("processing feed data...", $debug_enabled);
 507
 508                         if (DB_TYPE == "pgsql") {
 509                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 510                         } else {
 511                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 512                         }
 513
 514                         $sth = $pdo->prepare("SELECT owner_uid,favicon_avg_color,
 515                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 516                                                 favicon_needs_check
 517                                 FROM ttrss_feeds WHERE id = ?");
 518                         $sth->execute([$feed]);
 519
 520                         if ($row = $sth->fetch()) {
 521                                 $favicon_needs_check = $row["favicon_needs_check"];
 522                                 $favicon_avg_color = $row["favicon_avg_color"];
 523                                 $owner_uid = $row["owner_uid"];
 524                         } else {
 525                                 return false;
 526                         }
 527
 528                         $site_url = mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245);
 529
 530                         _debug("site_url: $site_url", $debug_enabled);
 531                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 532
 533                         if ($favicon_needs_check || $force_refetch) {
 534
 535                                 /* terrible hack: if we crash on floicon shit here, we won't check
 536                                  * the icon avgcolor again (unless the icon got updated) */
 537
 538                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 539                                 $favicon_modified = @filemtime($favicon_file);
 540
 541                                 _debug("checking favicon...", $debug_enabled);
 542
 543                                 RSSUtils::check_feed_favicon($site_url, $feed);
 544                                 $favicon_modified_new = @filemtime($favicon_file);
 545
 546                                 if ($favicon_modified_new > $favicon_modified)
 547                                         $favicon_avg_color = '';
 548
 549                                 $favicon_colorstring = "";
 550                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 551                                         require_once "colors.php";
 552
 553                                         $sth = $pdo->prepare("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 554                                                         id = ?");
 555                                         $sth->execute([$feed]);
 556
 557                                         $favicon_color = calculate_avg_color($favicon_file);
 558
 559                                         $favicon_colorstring = ",favicon_avg_color = " . $pdo->quote($favicon_color);
 560
 561                                 } else if ($favicon_avg_color == 'fail') {
 562                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 563                                 }
 564
 565                                 $sth = $pdo->prepare("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 566                                         $favicon_colorstring WHERE id = ?");
 567                                 $sth->execute([$feed]);
 568                         }
 569
 570                         _debug("loading filters & labels...", $debug_enabled);
 571
 572                         $filters = load_filters($feed, $owner_uid);
 573
 574                         if ($debug_enabled) {
 575                                 print_r($filters);
 576                         }
 577
 578                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 579
 580                         $items = $rss->get_items();
 581
 582                         if (!is_array($items)) {
 583                                 _debug("no articles found.", $debug_enabled);
 584
 585                                 $sth = $pdo->prepare("UPDATE ttrss_feeds
 586                                         SET last_updated = NOW(), last_unconditional = NOW(), last_error = '' WHERE id = ?");
 587                                 $sth->execute([$feed]);
 588
 589                                 return true; // no articles
 590                         }
 591
 592                         _debug("processing articles...", $debug_enabled);
 593
 594                         $tstart = time();
 595
 596                         foreach ($items as $item) {
 597                                 $pdo->beginTransaction();
 598
 599                                 if (clean($_REQUEST['xdebug']) == 3) {
 600                                         print_r($item);
 601                                 }
 602
 603                                 if (ini_get("max_execution_time") > 0 && time() - $tstart >= ini_get("max_execution_time") * 0.7) {
 604                                         _debug("looks like there's too many articles to process at once, breaking out", $debug_enabled);
 605                                         $pdo->commit();
 606                                         break;
 607                                 }
 608
 609                                 $entry_guid = strip_tags($item->get_id());
 610                                 if (!$entry_guid) $entry_guid = strip_tags($item->get_link());
 611                                 if (!$entry_guid) $entry_guid = RSSUtils::make_guid_from_title($item->get_title());
 612
 613                                 if (!$entry_guid) {
 614                                         $pdo->commit();
 615                                         continue;
 616                                 }
 617
 618                                 $entry_guid = "$owner_uid,$entry_guid";
 619
 620                                 $entry_guid_hashed = 'SHA1:' . sha1($entry_guid);
 621
 622                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 623
 624                                 $entry_timestamp = strip_tags($item->get_date());
 625
 626                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 627
 628                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 629                                         $entry_timestamp = time();
 630                                 }
 631
 632                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 633
 634                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 635
 636                                 $entry_title = strip_tags($item->get_title());
 637
 638                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 639
 640                                 _debug("title $entry_title", $debug_enabled);
 641                                 _debug("link $entry_link", $debug_enabled);
 642
 643                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 644
 645                                 $entry_content = $item->get_content();
 646                                 if (!$entry_content) $entry_content = $item->get_description();
 647
 648                                 if (clean($_REQUEST["xdebug"]) == 2) {
 649                                         print "content: ";
 650                                         print htmlspecialchars($entry_content);
 651                                         print "\n";
 652                                 }
 653
 654                                 $entry_comments = mb_substr(strip_tags($item->get_comments_url()), 0, 245);
 655                                 $num_comments = (int) $item->get_comments_count();
 656
 657                                 $entry_author = strip_tags($item->get_author());
 658                                 $entry_guid = mb_substr($entry_guid, 0, 245);
 659
 660                                 _debug("author $entry_author", $debug_enabled);
 661                                 _debug("num_comments: $num_comments", $debug_enabled);
 662                                 _debug("looking for tags...", $debug_enabled);
 663
 664                                 // parse <category> entries into tags
 665
 666                                 $additional_tags = array();
 667
 668                                 $additional_tags_src = $item->get_categories();
 669
 670                                 if (is_array($additional_tags_src)) {
 671                                         foreach ($additional_tags_src as $tobj) {
 672                                                 array_push($additional_tags, $tobj);
 673                                         }
 674                                 }
 675
 676                                 $entry_tags = array_unique($additional_tags);
 677
 678                                 for ($i = 0; $i < count($entry_tags); $i++) {
 679                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 680
 681                                         // we don't support numeric tags, let's prefix them
 682                                         if (is_numeric($entry_tags[$i])) $entry_tags[$i] = 't:' . $entry_tags[$i];
 683                                 }
 684
 685                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 686
 687                                 _debug("done collecting data.", $debug_enabled);
 688
 689                                 $sth = $pdo->prepare("SELECT id, content_hash, lang FROM ttrss_entries
 690                                         WHERE guid = ? OR guid = ?");
 691                                 $sth->execute([$entry_guid, $entry_guid_hashed]);
 692
 693                                 if ($row = $sth->fetch()) {
 694                                         $base_entry_id = $row["id"];
 695                                         $entry_stored_hash = $row["content_hash"];
 696                                         $article_labels = Article::get_article_labels($base_entry_id, $owner_uid);
 697                                         $entry_language = $row["lang"];
 698
 699                                         $existing_tags = Article::get_article_tags($base_entry_id, $owner_uid);
 700                                         $entry_tags = array_unique(array_merge($entry_tags, $existing_tags));
 701                                 } else {
 702                                         $base_entry_id = false;
 703                                         $entry_stored_hash = "";
 704                                         $article_labels = array();
 705                                         $entry_language = "";
 706                                 }
 707
 708                                 $article = array("owner_uid" => $owner_uid, // read only
 709                                         "guid" => $entry_guid, // read only
 710                                         "guid_hashed" => $entry_guid_hashed, // read only
 711                                         "title" => $entry_title,
 712                                         "content" => $entry_content,
 713                                         "link" => $entry_link,
 714                                         "labels" => $article_labels, // current limitation: can add labels to article, can't remove them
 715                                         "tags" => $entry_tags,
 716                                         "author" => $entry_author,
 717                                         "force_catchup" => false, // ugly hack for the time being
 718                                         "score_modifier" => 0, // no previous value, plugin should recalculate score modifier based on content if needed
 719                                         "language" => $entry_language,
 720                                         "num_comments" => $num_comments, // read only
 721                                         "feed" => array("id" => $feed,
 722                                                 "fetch_url" => $fetch_url,
 723                                                 "site_url" => $site_url,
 724                                                 "cache_images" => $cache_images)
 725                                 );
 726
 727                                 $entry_plugin_data = "";
 728                                 $entry_current_hash = RSSUtils::calculate_article_hash($article, $pluginhost);
 729
 730                                 _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
 731
 732                                 if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
 733                                         _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
 734
 735                                         // we keep encountering the entry in feeds, so we need to
 736                                         // update date_updated column so that we don't get horrible
 737                                         // dupes when the entry gets purged and reinserted again e.g.
 738                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 739
 740                                         $sth = $pdo->prepare("UPDATE ttrss_entries SET date_updated = NOW()
 741                                                 WHERE id = ?");
 742                                         $sth->execute([$base_entry_id]);
 743
 744                                         $pdo->commit();
 745                                         continue;
 746                                 }
 747
 748                                 _debug("hash differs, applying plugin filters:", $debug_enabled);
 749
 750                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 751                                         _debug("... " . get_class($plugin), $debug_enabled);
 752
 753                                         $start = microtime(true);
 754                                         $article = $plugin->hook_article_filter($article);
 755
 756                                         _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 757
 758                                         $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
 759                                 }
 760
 761                                 if (clean($_REQUEST["xdebug"]) == 2) {
 762                                         print "processed content: ";
 763                                         print htmlspecialchars($article["content"]);
 764                                         print "\n";
 765                                 }
 766
 767                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 768
 769                                 // Workaround: 4-byte unicode requires utf8mb4 in MySQL. See https://tt-rss.org/forum/viewtopic.php?f=1&t=3377&p=20077#p20077
 770                                 if (DB_TYPE == "mysql") {
 771                                         foreach ($article as $k => $v) {
 772                                                 // i guess we'll have to take the risk of 4byte unicode labels & tags here
 773                                                 if (is_string($article[$k])) {
 774                                                         $article[$k] = RSSUtils::strip_utf8mb4($v);
 775                                                 }
 776                                         }
 777                                 }
 778
 779                                 /* Collect article tags here so we could filter by them: */
 780
 781                                 $matched_rules = array();
 782
 783                                 $article_filters = RSSUtils::get_article_filters($filters, $article["title"],
 784                                         $article["content"], $article["link"], $article["author"],
 785                                         $article["tags"], $matched_rules);
 786
 787                                 if ($debug_enabled) {
 788                                         _debug("matched filter rules: ", $debug_enabled);
 789
 790                                         if (count($matched_rules) != 0) {
 791                                                 print_r($matched_rules);
 792                                         }
 793
 794                                         _debug("filter actions: ", $debug_enabled);
 795
 796                                         if (count($article_filters) != 0) {
 797                                                 print_r($article_filters);
 798                                         }
 799                                 }
 800
 801                                 $plugin_filter_names = RSSUtils::find_article_filters($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                                 $entry_title = strip_tags($article["title"]);
 831                                 $entry_author = mb_substr(strip_tags($article["author"]), 0, 245);
 832                                 $entry_link = strip_tags($article["link"]);
 833                                 $entry_content = $article["content"]; // escaped below
 834                                 $entry_force_catchup = $article["force_catchup"];
 835                                 $article_labels = $article["labels"];
 836                                 $entry_score_modifier = (int) $article["score_modifier"];
 837                                 $entry_language = $article["language"];
 838
 839                                 if ($debug_enabled) {
 840                                         _debug("article labels:", $debug_enabled);
 841
 842                                         if (count($article_labels) != 0) {
 843                                                 print_r($article_labels);
 844                                         }
 845                                 }
 846
 847                                 _debug("force catchup: $entry_force_catchup");
 848
 849                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 850                                         RSSUtils::cache_media($entry_content, $site_url, $debug_enabled);
 851
 852                                 $csth = $pdo->prepare("SELECT id FROM ttrss_entries
 853                                         WHERE guid = ? OR guid = ?");
 854                                 $csth->execute([$entry_guid, $entry_guid_hashed]);
 855
 856                                 if (!$row = $csth->fetch()) {
 857
 858                                         _debug("base guid [$entry_guid or $entry_guid_hashed] not found, creating...", $debug_enabled);
 859
 860                                         // base post entry does not exist, create it
 861
 862                                         $usth = $pdo->prepare(
 863                                                 "INSERT INTO ttrss_entries
 864                                                         (title,
 865                                                         guid,
 866                                                         link,
 867                                                         updated,
 868                                                         content,
 869                                                         content_hash,
 870                                                         no_orig_date,
 871                                                         date_updated,
 872                                                         date_entered,
 873                                                         comments,
 874                                                         num_comments,
 875                                                         plugin_data,
 876                                                         lang,
 877                                                         author)
 878                                                 VALUES
 879                                                         (?, ?, ?, ?, ?, ?,
 880                                                         false,
 881                                                         NOW(),
 882                                                         ?, ?, ?, ?,     ?, ?)");
 883
 884                                                 $usth->execute([$entry_title,
 885                                                         $entry_guid_hashed,
 886                                                         $entry_link,
 887                                                         $entry_timestamp_fmt,
 888                                                         "$entry_content",
 889                                                         $entry_current_hash,
 890                                                         $date_feed_processed,
 891                                                         $entry_comments,
 892                                                         (int)$num_comments,
 893                                                         $entry_plugin_data,
 894                                                         "$entry_language",
 895                                                         "$entry_author"]);
 896
 897                                 }
 898
 899                                 $csth->execute([$entry_guid, $entry_guid_hashed]);
 900
 901                                 $entry_ref_id = 0;
 902                                 $entry_int_id = 0;
 903
 904                                 if ($row = $csth->fetch()) {
 905
 906                                         _debug("base guid found, checking for user record", $debug_enabled);
 907
 908                                         $ref_id = $row['id'];
 909                                         $entry_ref_id = $ref_id;
 910
 911                                         if (RSSUtils::find_article_filter($article_filters, "filter")) {
 912                                                 $pdo->commit();
 913                                                 continue;
 914                                         }
 915
 916                                         $score = RSSUtils::calculate_article_score($article_filters) + $entry_score_modifier;
 917
 918                                         _debug("initial score: $score [including plugin modifier: $entry_score_modifier]", $debug_enabled);
 919
 920                                         // check for user post link to main table
 921
 922                                         $sth = $pdo->prepare("SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 923                                                         ref_id = ? AND owner_uid = ?");
 924                                         $sth->execute([$ref_id, $owner_uid]);
 925
 926                                         // okay it doesn't exist - create user entry
 927                                         if ($row = $sth->fetch()) {
 928                                                 $entry_ref_id = $row["ref_id"];
 929                                                 $entry_int_id = $row["int_id"];
 930
 931                                                 _debug("user record FOUND: RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 932                                         } else {
 933
 934                                                 _debug("user record not found, creating...", $debug_enabled);
 935
 936                                                 if ($score >= -500 && !RSSUtils::find_article_filter($article_filters, 'catchup') && !$entry_force_catchup) {
 937                                                         $unread = 1;
 938                                                         $last_read_qpart = null;
 939                                                 } else {
 940                                                         $unread = 0;
 941                                                         $last_read_qpart = date("Y-m-d H:i"); // we can't use NOW() here because it gets quoted
 942                                                 }
 943
 944                                                 if (RSSUtils::find_article_filter($article_filters, 'mark') || $score > 1000) {
 945                                                         $marked = 1;
 946                                                 } else {
 947                                                         $marked = 0;
 948                                                 }
 949
 950                                                 if (RSSUtils::find_article_filter($article_filters, 'publish')) {
 951                                                         $published = 1;
 952                                                 } else {
 953                                                         $published = 0;
 954                                                 }
 955
 956                                                 $last_marked = ($marked == 1) ? 'NOW()' : 'NULL';
 957                                                 $last_published = ($published == 1) ? 'NOW()' : 'NULL';
 958
 959                                                 $sth = $pdo->prepare(
 960                                                         "INSERT INTO ttrss_user_entries
 961                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 962                                                                 published, score, tag_cache, label_cache, uuid,
 963                                                                 last_marked, last_published)
 964                                                         VALUES (?, ?, ?, ?, ?, ?, ?, ?, '', '', '', ".$last_marked.", ".$last_published.")");
 965
 966                                                 $sth->execute([$ref_id, $owner_uid, $feed, $unread, $last_read_qpart, $marked,
 967                                                         $published, $score]);
 968
 969                                                 $sth = $pdo->prepare("SELECT int_id FROM ttrss_user_entries WHERE
 970                                                                 ref_id = ? AND owner_uid = ? AND
 971                                                                 feed_id = ? LIMIT 1");
 972
 973                                                 $sth->execute([$ref_id, $owner_uid, $feed]);
 974
 975                                                 if ($row = $sth->fetch())
 976                                                         $entry_int_id = $row['int_id'];
 977                                         }
 978
 979                                         _debug("resulting RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 980
 981                                         if (DB_TYPE == "pgsql")
 982                                                 $tsvector_qpart = "tsvector_combined = to_tsvector(:ts_lang, :ts_content),";
 983                                         else
 984                                                 $tsvector_qpart = "";
 985
 986                                         $sth = $pdo->prepare("UPDATE ttrss_entries
 987                                                 SET title = :title,
 988                                                         $tsvector_qpart
 989                                                         content = :content,
 990                                                         content_hash = :content_hash,
 991                                                         updated = :updated,
 992                                                         date_updated = NOW(),
 993                                                         num_comments = :num_comments,
 994                                                         plugin_data = :plugin_data,
 995                                                         author = :author,
 996                                                         lang = :lang
 997                                                 WHERE id = :id");
 998
 999                                         $params = [":title" => $entry_title,
1000                                                 ":content" => "$entry_content",
1001                                                 ":content_hash" => $entry_current_hash,
1002                                                 ":updated" => $entry_timestamp_fmt,
1003                                                 ":num_comments" => (int)$num_comments,
1004                                                 ":plugin_data" => $entry_plugin_data,
1005                                                 ":author" => "$entry_author",
1006                                                 ":lang" => $entry_language,
1007                                                 ":id" => $ref_id];
1008
1009                                         if (DB_TYPE == "pgsql") {
1010                                                 $params[":ts_lang"] = $feed_language;
1011                                                 $params[":ts_content"] = mb_substr(strip_tags($entry_title . " " . $entry_content), 0, 1000000);
1012                                         }
1013
1014                                         $sth->execute($params);
1015
1016                                         // update aux data
1017                                         $sth = $pdo->prepare("UPDATE ttrss_user_entries
1018                                                         SET score = ? WHERE ref_id = ?");
1019                                         $sth->execute([$score, $ref_id]);
1020
1021                                         if ($mark_unread_on_update) {
1022                                                 _debug("article updated, marking unread as requested.", $debug_enabled);
1023
1024                                                 $sth = $pdo->prepare("UPDATE ttrss_user_entries
1025                                                         SET last_read = null, unread = true WHERE ref_id = ?");
1026                                                 $sth->execute([$ref_id]);
1027                                         }
1028                                 }
1029
1030                                 _debug("assigning labels [other]...", $debug_enabled);
1031
1032                                 foreach ($article_labels as $label) {
1033                                         Labels::add_article($entry_ref_id, $label[1], $owner_uid);
1034                                 }
1035
1036                                 _debug("assigning labels [filters]...", $debug_enabled);
1037
1038                                 RSSUtils::assign_article_to_label_filters($entry_ref_id, $article_filters,
1039                                         $owner_uid, $article_labels);
1040
1041                                 _debug("looking for enclosures...", $debug_enabled);
1042
1043                                 // enclosures
1044
1045                                 $enclosures = array();
1046
1047                                 $encs = $item->get_enclosures();
1048
1049                                 if (is_array($encs)) {
1050                                         foreach ($encs as $e) {
1051                                                 $e_item = array(
1052                                                         rewrite_relative_url($site_url, $e->link),
1053                                                         $e->type, $e->length, $e->title, $e->width, $e->height);
1054
1055                                                 // Yet another episode of "mysql utf8_general_ci is gimped"
1056                                                 if (DB_TYPE == "mysql") {
1057                                                         for ($i = 0; $i < count($e_item); $i++) {
1058                                                                 if (is_string($e_item[$i])) {
1059                                                                         $e_item[$i] = RSSUtils::strip_utf8mb4($e_item[$i]);
1060                                                                 }
1061                                                         }
1062                                                 }
1063
1064                                                 array_push($enclosures, $e_item);
1065                                         }
1066                                 }
1067
1068                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
1069                                         RSSUtils::cache_enclosures($enclosures, $site_url, $debug_enabled);
1070
1071                                 if ($debug_enabled) {
1072                                         _debug("article enclosures:", $debug_enabled);
1073                                         print_r($enclosures);
1074                                 }
1075
1076                                 $esth = $pdo->prepare("SELECT id FROM ttrss_enclosures
1077                                                 WHERE content_url = ? AND post_id = ?");
1078
1079                                 $usth = $pdo->prepare("INSERT INTO ttrss_enclosures
1080                                                         (content_url, content_type, title, duration, post_id, width, height) VALUES
1081                                                         (?, ?, ?, ?, ?, ?, ?)");
1082
1083                                 foreach ($enclosures as $enc) {
1084                                         $enc_url = $enc[0];
1085                                         $enc_type = $enc[1];
1086                                         $enc_dur = (int)$enc[2];
1087                                         $enc_title = $enc[3];
1088                                         $enc_width = intval($enc[4]);
1089                                         $enc_height = intval($enc[5]);
1090
1091                                         $esth->execute([$enc_url, $entry_ref_id]);
1092
1093                                         if (!$esth->fetch()) {
1094                                                 $usth->execute([$enc_url, $enc_type, (string)$enc_title, $enc_dur, $entry_ref_id, $enc_width, $enc_height]);
1095                                         }
1096                                 }
1097
1098                                 // check for manual tags (we have to do it here since they're loaded from filters)
1099
1100                                 foreach ($article_filters as $f) {
1101                                         if ($f["type"] == "tag") {
1102
1103                                                 $manual_tags = trim_array(explode(",", $f["param"]));
1104
1105                                                 foreach ($manual_tags as $tag) {
1106                                                         if (tag_is_valid($tag)) {
1107                                                                 array_push($entry_tags, $tag);
1108                                                         }
1109                                                 }
1110                                         }
1111                                 }
1112
1113                                 // Skip boring tags
1114
1115                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1116                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1117
1118                                 $filtered_tags = array();
1119                                 $tags_to_cache = array();
1120
1121                                 if ($entry_tags && is_array($entry_tags)) {
1122                                         foreach ($entry_tags as $tag) {
1123                                                 if (array_search($tag, $boring_tags) === false) {
1124                                                         array_push($filtered_tags, $tag);
1125                                                 }
1126                                         }
1127                                 }
1128
1129                                 $filtered_tags = array_unique($filtered_tags);
1130
1131                                 if ($debug_enabled) {
1132                                         _debug("filtered article tags:", $debug_enabled);
1133                                         print_r($filtered_tags);
1134                                 }
1135
1136                                 // Save article tags in the database
1137
1138                                 if (count($filtered_tags) > 0) {
1139
1140                                         $tsth = $pdo->prepare("SELECT id FROM ttrss_tags
1141                                                         WHERE tag_name = ? AND post_int_id = ? AND
1142                                                         owner_uid = ? LIMIT 1");
1143
1144                                         $usth = $pdo->prepare("INSERT INTO ttrss_tags
1145                                                                         (owner_uid,tag_name,post_int_id)
1146                                                                         VALUES (?, ?, ?)");
1147
1148                                         foreach ($filtered_tags as $tag) {
1149
1150                                                 $tag = sanitize_tag($tag);
1151
1152                                                 if (!tag_is_valid($tag)) continue;
1153
1154                                                 $tsth->execute([$tag, $entry_int_id, $owner_uid]);
1155
1156                                                 if (!$tsth->fetch()) {
1157                                                         $usth->execute([$owner_uid, $tag, $entry_int_id]);
1158                                                 }
1159
1160                                                 array_push($tags_to_cache, $tag);
1161                                         }
1162
1163                                         /* update the cache */
1164
1165                                         $tags_to_cache = array_unique($tags_to_cache);
1166
1167                                         $tags_str = join(",", $tags_to_cache);
1168
1169                                         $tsth = $pdo->prepare("UPDATE ttrss_user_entries
1170                                                 SET tag_cache = ? WHERE ref_id = ?
1171                                                 AND owner_uid = ?");
1172                                         $tsth->execute([$tags_str, $entry_ref_id, $owner_uid]);
1173                                 }
1174
1175                                 _debug("article processed", $debug_enabled);
1176
1177                                 $pdo->commit();
1178                         }
1179
1180                         _debug("purging feed...", $debug_enabled);
1181
1182                         purge_feed($feed, 0, $debug_enabled);
1183
1184                         $sth = $pdo->prepare("UPDATE ttrss_feeds
1185                                 SET last_updated = NOW(), last_unconditional = NOW(), last_error = '' WHERE id = ?");
1186                         $sth->execute([$feed]);
1187
1188                 } else {
1189
1190                         $error_msg = mb_substr($rss->error(), 0, 245);
1191
1192                         _debug("fetch error: $error_msg", $debug_enabled);
1193
1194                         if (count($rss->errors()) > 1) {
1195                                 foreach ($rss->errors() as $error) {
1196                                         _debug("+ $error");
1197                                 }
1198                         }
1199
1200                         $sth = $pdo->prepare("UPDATE ttrss_feeds SET last_error = ?,
1201                                 last_updated = NOW(), last_unconditional = NOW() WHERE id = ?");
1202                         $sth->execute([$error_msg, $feed]);
1203
1204                         unset($rss);
1205                         return false;
1206                 }
1207
1208                 _debug("done", $debug_enabled);
1209
1210                 return true;
1211         }
1212
1213         static function cache_enclosures($enclosures, $site_url, $debug) {
1214                 foreach ($enclosures as $enc) {
1215
1216                         if (preg_match("/(image|audio|video)/", $enc[1])) {
1217
1218                                 $src = rewrite_relative_url($site_url, $enc[0]);
1219
1220                                 $local_filename = CACHE_DIR . "/images/" . sha1($src);
1221
1222                                 if ($debug) _debug("cache_enclosures: downloading: $src to $local_filename");
1223
1224                                 if (!file_exists($local_filename)) {
1225                                         $file_content = fetch_file_contents($src);
1226
1227                                         if ($file_content && strlen($file_content) > MIN_CACHE_FILE_SIZE) {
1228                                                 file_put_contents($local_filename, $file_content);
1229                                         }
1230                                 } else {
1231                                         touch($local_filename);
1232                                 }
1233                         }
1234                 }
1235         }
1236
1237         static function cache_media($html, $site_url, $debug) {
1238                 libxml_use_internal_errors(true);
1239
1240                 $charset_hack = '<head>
1241                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1242                 </head>';
1243
1244                 $doc = new DOMDocument();
1245                 $doc->loadHTML($charset_hack . $html);
1246                 $xpath = new DOMXPath($doc);
1247
1248                 $entries = $xpath->query('(//img[@src])|(//video/source[@src])|(//audio/source[@src])');
1249
1250                 foreach ($entries as $entry) {
1251                         if ($entry->hasAttribute('src') && strpos($entry->getAttribute('src'), "data:") !== 0) {
1252                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1253
1254                                 $local_filename = CACHE_DIR . "/images/" . sha1($src);
1255
1256                                 if ($debug) _debug("cache_media: downloading: $src to $local_filename");
1257
1258                                 if (!file_exists($local_filename)) {
1259                                         $file_content = fetch_file_contents($src);
1260
1261                                         if ($file_content && strlen($file_content) > MIN_CACHE_FILE_SIZE) {
1262                                                 file_put_contents($local_filename, $file_content);
1263                                         }
1264                                 } else {
1265                                         touch($local_filename);
1266                                 }
1267                         }
1268                 }
1269         }
1270
1271         static function expire_error_log($debug) {
1272                 if ($debug) _debug("Removing old error log entries...");
1273
1274                 $pdo = Db::pdo();
1275
1276                 if (DB_TYPE == "pgsql") {
1277                         $pdo->query("DELETE FROM ttrss_error_log
1278                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1279                 } else {
1280                         $pdo->query("DELETE FROM ttrss_error_log
1281                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1282                 }
1283         }
1284
1285         static function expire_lock_files($debug) {
1286                 //if ($debug) _debug("Removing old lock files...");
1287
1288                 $num_deleted = 0;
1289
1290                 if (is_writable(LOCK_DIRECTORY)) {
1291                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1292
1293                         if ($files) {
1294                                 foreach ($files as $file) {
1295                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1296                                                 unlink($file);
1297                                                 ++$num_deleted;
1298                                         }
1299                                 }
1300                         }
1301                 }
1302
1303                 if ($debug) _debug("Removed $num_deleted old lock files.");
1304         }
1305
1306         static function expire_cached_files($debug) {
1307                 foreach (array("simplepie", "feeds", "images", "export", "upload") as $dir) {
1308                         $cache_dir = CACHE_DIR . "/$dir";
1309
1310 //                      if ($debug) _debug("Expiring $cache_dir");
1311
1312                         $num_deleted = 0;
1313
1314                         if (is_writable($cache_dir)) {
1315                                 $files = glob("$cache_dir/*");
1316
1317                                 if ($files) {
1318                                         foreach ($files as $file) {
1319                                                 if (time() - filemtime($file) > 86400*CACHE_MAX_DAYS) {
1320                                                         unlink($file);
1321
1322                                                         ++$num_deleted;
1323                                                 }
1324                                         }
1325                                 }
1326                         }
1327
1328                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1329                 }
1330         }
1331
1332         /**
1333          * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1334          * Returns the url query as associative array
1335          *
1336          * @param    string    query
1337          * @return    array    params
1338          */
1339         static function convertUrlQuery($query) {
1340                 $queryParts = explode('&', $query);
1341
1342                 $params = array();
1343
1344                 foreach ($queryParts as $param) {
1345                         $item = explode('=', $param);
1346                         $params[$item[0]] = $item[1];
1347                 }
1348
1349                 return $params;
1350         }
1351
1352         static function get_article_filters($filters, $title, $content, $link, $author, $tags, &$matched_rules = false) {
1353                 $matches = array();
1354
1355                 foreach ($filters as $filter) {
1356                         $match_any_rule = $filter["match_any_rule"];
1357                         $inverse = $filter["inverse"];
1358                         $filter_match = false;
1359
1360                         foreach ($filter["rules"] as $rule) {
1361                                 $match = false;
1362                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1363                                 $rule_inverse = $rule["inverse"];
1364
1365                                 if (!$reg_exp)
1366                                         continue;
1367
1368                                 switch ($rule["type"]) {
1369                                         case "title":
1370                                                 $match = @preg_match("/$reg_exp/iu", $title);
1371                                                 break;
1372                                         case "content":
1373                                                 // we don't need to deal with multiline regexps
1374                                                 $content = preg_replace("/[\r\n\t]/", "", $content);
1375
1376                                                 $match = @preg_match("/$reg_exp/iu", $content);
1377                                                 break;
1378                                         case "both":
1379                                                 // we don't need to deal with multiline regexps
1380                                                 $content = preg_replace("/[\r\n\t]/", "", $content);
1381
1382                                                 $match = (@preg_match("/$reg_exp/iu", $title) || @preg_match("/$reg_exp/iu", $content));
1383                                                 break;
1384                                         case "link":
1385                                                 $match = @preg_match("/$reg_exp/iu", $link);
1386                                                 break;
1387                                         case "author":
1388                                                 $match = @preg_match("/$reg_exp/iu", $author);
1389                                                 break;
1390                                         case "tag":
1391                                                 foreach ($tags as $tag) {
1392                                                         if (@preg_match("/$reg_exp/iu", $tag)) {
1393                                                                 $match = true;
1394                                                                 break;
1395                                                         }
1396                                                 }
1397                                                 break;
1398                                 }
1399
1400                                 if ($rule_inverse) $match = !$match;
1401
1402                                 if ($match_any_rule) {
1403                                         if ($match) {
1404                                                 $filter_match = true;
1405                                                 break;
1406                                         }
1407                                 } else {
1408                                         $filter_match = $match;
1409                                         if (!$match) {
1410                                                 break;
1411                                         }
1412                                 }
1413                         }
1414
1415                         if ($inverse) $filter_match = !$filter_match;
1416
1417                         if ($filter_match) {
1418                                 if (is_array($matched_rules)) array_push($matched_rules, $rule);
1419
1420                                 foreach ($filter["actions"] AS $action) {
1421                                         array_push($matches, $action);
1422
1423                                         // if Stop action encountered, perform no further processing
1424                                         if (isset($action["type"]) && $action["type"] == "stop") return $matches;
1425                                 }
1426                         }
1427                 }
1428
1429                 return $matches;
1430         }
1431
1432         static function find_article_filter($filters, $filter_name) {
1433                 foreach ($filters as $f) {
1434                         if ($f["type"] == $filter_name) {
1435                                 return $f;
1436                         };
1437                 }
1438                 return false;
1439         }
1440
1441         static function find_article_filters($filters, $filter_name) {
1442                 $results = array();
1443
1444                 foreach ($filters as $f) {
1445                         if ($f["type"] == $filter_name) {
1446                                 array_push($results, $f);
1447                         };
1448                 }
1449                 return $results;
1450         }
1451
1452         static function calculate_article_score($filters) {
1453                 $score = 0;
1454
1455                 foreach ($filters as $f) {
1456                         if ($f["type"] == "score") {
1457                                 $score += $f["param"];
1458                         };
1459                 }
1460                 return $score;
1461         }
1462
1463         static function labels_contains_caption($labels, $caption) {
1464                 foreach ($labels as $label) {
1465                         if ($label[1] == $caption) {
1466                                 return true;
1467                         }
1468                 }
1469
1470                 return false;
1471         }
1472
1473         static function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1474                 foreach ($filters as $f) {
1475                         if ($f["type"] == "label") {
1476                                 if (!RSSUtils::labels_contains_caption($article_labels, $f["param"])) {
1477                                         Labels::add_article($id, $f["param"], $owner_uid);
1478                                 }
1479                         }
1480                 }
1481         }
1482
1483         static function make_guid_from_title($title) {
1484                 return preg_replace("/[ \"\',.:;]/", "-",
1485                         mb_strtolower(strip_tags($title), 'utf-8'));
1486         }
1487
1488         static function cleanup_counters_cache($debug) {
1489                 $pdo = Db::pdo();
1490
1491                 $res = $pdo->query("DELETE FROM ttrss_counters_cache
1492                         WHERE feed_id > 0 AND
1493                         (SELECT COUNT(id) FROM ttrss_feeds WHERE
1494                                 id = feed_id AND
1495                                 ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid) = 0");
1496
1497                 $frows = $res->rowCount();
1498
1499                 $res = $pdo->query("DELETE FROM ttrss_cat_counters_cache
1500                         WHERE feed_id > 0 AND
1501                         (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
1502                                 id = feed_id AND
1503                                 ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid) = 0");
1504
1505                 $crows = $res->rowCount();
1506
1507                 if ($debug) _debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
1508         }
1509
1510         static function housekeeping_user($owner_uid) {
1511                 $tmph = new PluginHost();
1512
1513                 load_user_plugins($owner_uid, $tmph);
1514
1515                 $tmph->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1516         }
1517
1518         static function housekeeping_common($debug) {
1519                 RSSUtils::expire_cached_files($debug);
1520                 RSSUtils::expire_lock_files($debug);
1521                 RSSUtils::expire_error_log($debug);
1522
1523                 $count = RSSUtils::update_feedbrowser_cache();
1524                 _debug("Feedbrowser updated, $count feeds processed.");
1525
1526                 Article::purge_orphans( true);
1527                 RSSUtils::cleanup_counters_cache($debug);
1528
1529                 //$rc = cleanup_tags( 14, 50000);
1530                 //_debug("Cleaned $rc cached tags.");
1531
1532                 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1533         }
1534
1535         static function check_feed_favicon($site_url, $feed) {
1536                 #               print "FAVICON [$site_url]: $favicon_url\n";
1537
1538                 $icon_file = ICONS_DIR . "/$feed.ico";
1539
1540                 if (!file_exists($icon_file)) {
1541                         $favicon_url = get_favicon_url($site_url);
1542
1543                         if ($favicon_url) {
1544                                 // Limiting to "image" type misses those served with text/plain
1545                                 $contents = fetch_file_contents($favicon_url); // , "image");
1546
1547                                 if ($contents) {
1548                                         // Crude image type matching.
1549                                         // Patterns gleaned from the file(1) source code.
1550                                         if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
1551                                                 // 0       string  \000\000\001\000        MS Windows icon resource
1552                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
1553                                         }
1554                                         elseif (preg_match('/^GIF8/', $contents)) {
1555                                                 // 0       string          GIF8            GIF image data
1556                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa GIF image");
1557                                         }
1558                                         elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
1559                                                 // 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
1560                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa PNG image");
1561                                         }
1562                                         elseif (preg_match('/^\xff\xd8/', $contents)) {
1563                                                 // 0       beshort         0xffd8          JPEG image data
1564                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa JPG image");
1565                                         }
1566                                         elseif (preg_match('/^BM/', $contents)) {
1567                                                 // 0    string          BM      PC bitmap (OS2, Windows BMP files)
1568                                                 //error_log("check_feed_favicon, favicon_url=$favicon_url isa BMP image");
1569                                         }
1570                                         else {
1571                                                 //error_log("check_feed_favicon: favicon_url=$favicon_url isa UNKNOWN type");
1572                                                 $contents = "";
1573                                         }
1574                                 }
1575
1576                                 if ($contents) {
1577                                         $fp = @fopen($icon_file, "w");
1578
1579                                         if ($fp) {
1580                                                 fwrite($fp, $contents);
1581                                                 fclose($fp);
1582                                                 chmod($icon_file, 0644);
1583                                         }
1584                                 }
1585                         }
1586                         return $icon_file;
1587                 }
1588         }
1589
1590
1591
1592 }