include/rssfuncs.php

   1 <?php
   2         define_default('DAEMON_UPDATE_LOGIN_LIMIT', 30);
   3         define_default('DAEMON_FEED_LIMIT', 500);
   4         define_default('DAEMON_SLEEP_INTERVAL', 120);
   5         define_default('_MIN_CACHE_IMAGE_SIZE', 1024);
   6
   7         function calculate_article_hash($article, $pluginhost) {
   8                 $tmp = "";
   9
  10                 foreach ($article as $k => $v) {
  11                         if ($k != "feed" && isset($v)) {
  12                                 $tmp .= sha1("$k:" . (is_array($v) ? implode(",", $v) : $v));
  13                         }
  14                 }
  15
  16                 return sha1(implode(",", $pluginhost->get_plugin_names()) . $tmp);
  17         }
  18
  19         function update_feedbrowser_cache() {
  20
  21                 $result = db_query("SELECT feed_url, site_url, title, COUNT(id) AS subscribers
  22                         FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf
  23                                 WHERE tf.feed_url = ttrss_feeds.feed_url
  24                                 AND (private IS true OR auth_login != '' OR auth_pass != '' OR feed_url LIKE '%:%@%/%'))
  25                                 GROUP BY feed_url, site_url, title ORDER BY subscribers DESC LIMIT 1000");
  26
  27                 db_query("BEGIN");
  28
  29                 db_query("DELETE FROM ttrss_feedbrowser_cache");
  30
  31                 $count = 0;
  32
  33                 while ($line = db_fetch_assoc($result)) {
  34                         $subscribers = db_escape_string($line["subscribers"]);
  35                         $feed_url = db_escape_string($line["feed_url"]);
  36                         $title = db_escape_string($line["title"]);
  37                         $site_url = db_escape_string($line["site_url"]);
  38
  39                         $tmp_result = db_query("SELECT subscribers FROM
  40                                 ttrss_feedbrowser_cache WHERE feed_url = '$feed_url'");
  41
  42                         if (db_num_rows($tmp_result) == 0) {
  43
  44                                 db_query("INSERT INTO ttrss_feedbrowser_cache
  45                                         (feed_url, site_url, title, subscribers) VALUES ('$feed_url',
  46                                                 '$site_url', '$title', '$subscribers')");
  47
  48                                 ++$count;
  49
  50                         }
  51
  52                 }
  53
  54                 db_query("COMMIT");
  55
  56                 return $count;
  57
  58         }
  59
  60
  61         /**
  62          * Update a feed batch.
  63          * Used by daemons to update n feeds by run.
  64          * Only update feed needing a update, and not being processed
  65          * by another process.
  66          *
  67          * @param mixed $link Database link
  68          * @param integer $limit Maximum number of feeds in update batch. Default to DAEMON_FEED_LIMIT.
  69          * @param boolean $from_http Set to true if you call this function from http to disable cli specific code.
  70          * @param boolean $debug Set to false to disable debug output. Default to true.
  71          * @return void
  72          */
  73         function update_daemon_common($limit = DAEMON_FEED_LIMIT, $from_http = false, $debug = true) {
  74                 // Process all other feeds using last_updated and interval parameters
  75
  76                 $schema_version = get_schema_version();
  77
  78                 if ($schema_version != SCHEMA_VERSION) {
  79                         die("Schema version is wrong, please upgrade the database.\n");
  80                 }
  81
  82                 define('PREFS_NO_CACHE', true);
  83
  84                 // Test if the user has loggued in recently. If not, it does not update its feeds.
  85                 if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
  86                         if (DB_TYPE == "pgsql") {
  87                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
  88                         } else {
  89                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
  90                         }
  91                 } else {
  92                         $login_thresh_qpart = "";
  93                 }
  94
  95                 // Test if the feed need a update (update interval exceeded).
  96                 if (DB_TYPE == "pgsql") {
  97                         $update_limit_qpart = "AND ((
  98                                         ttrss_feeds.update_interval = 0
  99                                         AND ttrss_user_prefs.value != '-1'
 100                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
 101                                 ) OR (
 102                                         ttrss_feeds.update_interval > 0
 103                                         AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
 104                                 ) OR (ttrss_feeds.last_updated IS NULL
 105                                         AND ttrss_user_prefs.value != '-1')
 106                                 OR (last_updated = '1970-01-01 00:00:00'
 107                                         AND ttrss_user_prefs.value != '-1'))";
 108                 } else {
 109                         $update_limit_qpart = "AND ((
 110                                         ttrss_feeds.update_interval = 0
 111                                         AND ttrss_user_prefs.value != '-1'
 112                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 113                                 ) OR (
 114                                         ttrss_feeds.update_interval > 0
 115                                         AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 116                                 ) OR (ttrss_feeds.last_updated IS NULL
 117                                         AND ttrss_user_prefs.value != '-1')
 118                                 OR (last_updated = '1970-01-01 00:00:00'
 119                                         AND ttrss_user_prefs.value != '-1'))";
 120                 }
 121
 122                 // Test if feed is currently being updated by another process.
 123                 if (DB_TYPE == "pgsql") {
 124                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
 125                 } else {
 126                         $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
 127                 }
 128
 129                 // Test if there is a limit to number of updated feeds
 130                 $query_limit = "";
 131                 if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 132
 133                 $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 134                         FROM
 135                                 ttrss_feeds, ttrss_users, ttrss_user_prefs
 136                         WHERE
 137                                 ttrss_feeds.owner_uid = ttrss_users.id
 138                                 AND ttrss_user_prefs.profile IS NULL
 139                                 AND ttrss_users.id = ttrss_user_prefs.owner_uid
 140                                 AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
 141                                 $login_thresh_qpart $update_limit_qpart
 142                                 $updstart_thresh_qpart
 143                                 ORDER BY last_updated $query_limit";
 144
 145                 // We search for feed needing update.
 146                 $result = db_query($query);
 147
 148                 if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 149
 150                 // Here is a little cache magic in order to minimize risk of double feed updates.
 151                 $feeds_to_update = array();
 152                 while ($line = db_fetch_assoc($result)) {
 153                         array_push($feeds_to_update, db_escape_string($line['feed_url']));
 154                 }
 155
 156                 // We update the feed last update started date before anything else.
 157                 // There is no lag due to feed contents downloads
 158                 // It prevent an other process to update the same feed.
 159
 160                 if(count($feeds_to_update) > 0) {
 161                         $feeds_quoted = array();
 162
 163                         foreach ($feeds_to_update as $feed) {
 164                                 array_push($feeds_quoted, "'" . db_escape_string($feed) . "'");
 165                         }
 166
 167                         db_query(sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 168                                 WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
 169                 }
 170
 171                 $nf = 0;
 172                 $bstarted = microtime(true);
 173
 174                 // For each feed, we call the feed update function.
 175                 foreach ($feeds_to_update as $feed) {
 176                         if($debug) _debug("Base feed: $feed");
 177
 178                         //update_rss_feed($line["id"], true);
 179
 180                         // since we have the data cached, we can deal with other feeds with the same url
 181
 182                         $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
 183                         FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
 184                                 ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
 185                                 ttrss_users.id = ttrss_user_prefs.owner_uid AND
 186                                 ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
 187                                 ttrss_user_prefs.profile IS NULL AND
 188                                 feed_url = '".db_escape_string($feed)."' AND
 189                                 (ttrss_feeds.update_interval > 0 OR
 190                                         ttrss_user_prefs.value != '-1')
 191                                 $login_thresh_qpart
 192                         ORDER BY ttrss_feeds.id $query_limit");
 193
 194                         if (db_num_rows($tmp_result) > 0) {
 195                                 $rss = false;
 196
 197                                 while ($tline = db_fetch_assoc($tmp_result)) {
 198                                         if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
 199
 200                                         $fstarted = microtime(true);
 201                                         $rss = update_rss_feed($tline["id"], true, false);
 202                                         _debug_suppress(false);
 203
 204                                         _debug(sprintf("    %.4f (sec)", microtime(true) - $fstarted));
 205
 206                                         ++$nf;
 207                                 }
 208                         }
 209                 }
 210
 211                 if ($nf > 0) {
 212                         _debug(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
 213                                 microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
 214                 }
 215
 216                 require_once "digest.php";
 217
 218                 // Send feed digests by email if needed.
 219                 send_headlines_digests($debug);
 220
 221                 return $nf;
 222
 223         } // function update_daemon_common
 224
 225         // this is used when subscribing
 226         function set_basic_feed_info($feed) {
 227
 228                 $feed = db_escape_string($feed);
 229
 230                 $result = db_query("SELECT feed_url,auth_pass,auth_pass_encrypted
 231                                         FROM ttrss_feeds WHERE id = '$feed'");
 232
 233                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 234                         0, "auth_pass_encrypted"));
 235
 236                 $auth_login = db_fetch_result($result, 0, "auth_login");
 237                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 238
 239                 if ($auth_pass_encrypted) {
 240                         require_once "crypt.php";
 241                         $auth_pass = decrypt_string($auth_pass);
 242                 }
 243
 244                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 245
 246                 $feed_data = fetch_file_contents($fetch_url, false,
 247                         $auth_login, $auth_pass, false,
 248                         FEED_FETCH_TIMEOUT_TIMEOUT,
 249                         0);
 250
 251                 global $fetch_curl_used;
 252
 253                 if (!$fetch_curl_used) {
 254                         $tmp = @gzdecode($feed_data);
 255
 256                         if ($tmp) $feed_data = $tmp;
 257                 }
 258
 259                 $feed_data = trim($feed_data);
 260
 261                 $rss = new FeedParser($feed_data);
 262                 $rss->init();
 263
 264                 if (!$rss->error()) {
 265
 266                         $result = db_query("SELECT title, site_url FROM ttrss_feeds WHERE id = '$feed'");
 267
 268                         $registered_title = db_fetch_result($result, 0, "title");
 269                         $orig_site_url = db_fetch_result($result, 0, "site_url");
 270
 271                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 272                         $feed_title = db_escape_string(mb_substr($rss->get_title(), 0, 199));
 273
 274                         if ($feed_title && (!$registered_title || $registered_title == "[Unknown]")) {
 275                                 db_query("UPDATE ttrss_feeds SET
 276                                         title = '$feed_title' WHERE id = '$feed'");
 277                         }
 278
 279                         if ($site_url && $orig_site_url != $site_url) {
 280                                 db_query("UPDATE ttrss_feeds SET
 281                                                         site_url = '$site_url' WHERE id = '$feed'");
 282                         }
 283                 }
 284         }
 285
 286         // ignore_daemon is not used
 287         function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false, $rss = false) {
 288
 289                 $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 290
 291                 _debug_suppress(!$debug_enabled);
 292                 _debug("start", $debug_enabled);
 293
 294                 $result = db_query("SELECT id,update_interval,auth_login,
 295                         feed_url,auth_pass,cache_images,
 296                         mark_unread_on_update, owner_uid,
 297                         pubsub_state, auth_pass_encrypted,
 298                         (SELECT max(date_entered) FROM
 299                                 ttrss_entries, ttrss_user_entries where ref_id = id AND feed_id = '$feed') AS last_article_timestamp
 300                         FROM ttrss_feeds WHERE id = '$feed'");
 301
 302                 if (db_num_rows($result) == 0) {
 303                         _debug("feed $feed NOT FOUND/SKIPPED", $debug_enabled);
 304                         return false;
 305                 }
 306
 307                 $last_article_timestamp = @strtotime(db_fetch_result($result, 0, "last_article_timestamp"));
 308
 309                 if (defined('_DISABLE_HTTP_304'))
 310                         $last_article_timestamp = 0;
 311
 312                 $owner_uid = db_fetch_result($result, 0, "owner_uid");
 313                 $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
 314                         0, "mark_unread_on_update"));
 315                 $pubsub_state = db_fetch_result($result, 0, "pubsub_state");
 316                 $auth_pass_encrypted = sql_bool_to_bool(db_fetch_result($result,
 317                         0, "auth_pass_encrypted"));
 318
 319                 db_query("UPDATE ttrss_feeds SET last_update_started = NOW()
 320                         WHERE id = '$feed'");
 321
 322                 $auth_login = db_fetch_result($result, 0, "auth_login");
 323                 $auth_pass = db_fetch_result($result, 0, "auth_pass");
 324
 325                 if ($auth_pass_encrypted) {
 326                         require_once "crypt.php";
 327                         $auth_pass = decrypt_string($auth_pass);
 328                 }
 329
 330                 $cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
 331                 $fetch_url = db_fetch_result($result, 0, "feed_url");
 332
 333                 $feed = db_escape_string($feed);
 334
 335                 $date_feed_processed = date('Y-m-d H:i');
 336
 337                 $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 338
 339                 $pluginhost = new PluginHost();
 340                 $pluginhost->set_debug($debug_enabled);
 341                 $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 342
 343                 $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
 344                 $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
 345                 $pluginhost->load_data();
 346
 347                 if ($rss && is_object($rss) && get_class($rss) == "FeedParser") {
 348                         _debug("using previously initialized parser object");
 349                 } else {
 350                         $rss_hash = false;
 351
 352                         $force_refetch = isset($_REQUEST["force_refetch"]);
 353
 354                         foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
 355                                 $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, $last_article_timestamp, $auth_login, $auth_pass);
 356                         }
 357
 358                         // try cache
 359                         if (!$feed_data &&
 360                                 file_exists($cache_filename) &&
 361                                 is_readable($cache_filename) &&
 362                                 !$auth_login && !$auth_pass &&
 363                                 filemtime($cache_filename) > time() - 30) {
 364
 365                                 _debug("using local cache [$cache_filename].", $debug_enabled);
 366
 367                                 @$feed_data = file_get_contents($cache_filename);
 368
 369                                 if ($feed_data) {
 370                                         $rss_hash = sha1($feed_data);
 371                                 }
 372
 373                         } else {
 374                                 _debug("local cache will not be used for this feed", $debug_enabled);
 375                         }
 376
 377                         // fetch feed from source
 378                         if (!$feed_data) {
 379                                 _debug("fetching [$fetch_url]...", $debug_enabled);
 380                                 _debug("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $last_article_timestamp), $debug_enabled);
 381
 382                                 $feed_data = fetch_file_contents($fetch_url, false,
 383                                         $auth_login, $auth_pass, false,
 384                                         $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
 385                                         $force_refetch ? 0 : $last_article_timestamp);
 386
 387                                 global $fetch_curl_used;
 388
 389                                 if (!$fetch_curl_used) {
 390                                         $tmp = @gzdecode($feed_data);
 391
 392                                         if ($tmp) $feed_data = $tmp;
 393                                 }
 394
 395                                 $feed_data = trim($feed_data);
 396
 397                                 _debug("fetch done.", $debug_enabled);
 398
 399                                 // cache vanilla feed data for re-use
 400                                 if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
 401                                         $new_rss_hash = sha1($feed_data);
 402
 403                                         if ($new_rss_hash != $rss_hash) {
 404                                                 _debug("saving $cache_filename", $debug_enabled);
 405                                                 @file_put_contents($cache_filename, $feed_data);
 406                                         }
 407                                 }
 408                         }
 409
 410                         if (!$feed_data) {
 411                                 global $fetch_last_error;
 412                                 global $fetch_last_error_code;
 413
 414                                 _debug("unable to fetch: $fetch_last_error [$fetch_last_error_code]", $debug_enabled);
 415
 416                                 $error_escaped = '';
 417
 418                                 // If-Modified-Since
 419                                 if ($fetch_last_error_code != 304) {
 420                                         $error_escaped = db_escape_string($fetch_last_error);
 421                                 } else {
 422                                         _debug("source claims data not modified, nothing to do.", $debug_enabled);
 423                                 }
 424
 425                                 db_query(
 426                                         "UPDATE ttrss_feeds SET last_error = '$error_escaped',
 427                                                 last_updated = NOW() WHERE id = '$feed'");
 428
 429                                 return;
 430                         }
 431                 }
 432
 433                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
 434                         $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
 435                 }
 436
 437                 // set last update to now so if anything *simplepie* crashes later we won't be
 438                 // continuously failing on the same feed
 439                 //db_query("UPDATE ttrss_feeds SET last_updated = NOW() WHERE id = '$feed'");
 440
 441                 if (!$rss) {
 442                         $rss = new FeedParser($feed_data);
 443                         $rss->init();
 444                 }
 445
 446                 if (DETECT_ARTICLE_LANGUAGE) {
 447                         require_once "lib/languagedetect/LanguageDetect.php";
 448
 449                         $lang = new Text_LanguageDetect();
 450                         $lang->setNameMode(2);
 451                 }
 452
 453 //              print_r($rss);
 454
 455                 $feed = db_escape_string($feed);
 456
 457                 if (!$rss->error()) {
 458
 459                         // We use local pluginhost here because we need to load different per-user feed plugins
 460                         $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 461
 462                         _debug("processing feed data...", $debug_enabled);
 463
 464 //                      db_query("BEGIN");
 465
 466                         if (DB_TYPE == "pgsql") {
 467                                 $favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
 468                         } else {
 469                                 $favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
 470                         }
 471
 472                         $result = db_query("SELECT owner_uid,favicon_avg_color,
 473                                 (favicon_last_checked IS NULL OR $favicon_interval_qpart) AS
 474                                                 favicon_needs_check
 475                                 FROM ttrss_feeds WHERE id = '$feed'");
 476
 477                         $favicon_needs_check = sql_bool_to_bool(db_fetch_result($result, 0,
 478                                 "favicon_needs_check"));
 479                         $favicon_avg_color = db_fetch_result($result, 0, "favicon_avg_color");
 480
 481                         $owner_uid = db_fetch_result($result, 0, "owner_uid");
 482
 483                         $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 484
 485                         _debug("site_url: $site_url", $debug_enabled);
 486                         _debug("feed_title: " . $rss->get_title(), $debug_enabled);
 487
 488                         if ($favicon_needs_check || $force_refetch) {
 489
 490                                 /* terrible hack: if we crash on floicon shit here, we won't check
 491                                  * the icon avgcolor again (unless the icon got updated) */
 492
 493                                 $favicon_file = ICONS_DIR . "/$feed.ico";
 494                                 $favicon_modified = @filemtime($favicon_file);
 495
 496                                 _debug("checking favicon...", $debug_enabled);
 497
 498                                 check_feed_favicon($site_url, $feed);
 499                                 $favicon_modified_new = @filemtime($favicon_file);
 500
 501                                 if ($favicon_modified_new > $favicon_modified)
 502                                         $favicon_avg_color = '';
 503
 504                                 if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
 505                                                 require_once "colors.php";
 506
 507                                                 db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
 508                                                         id = '$feed'");
 509
 510                                                 $favicon_color = db_escape_string(
 511                                                         calculate_avg_color($favicon_file));
 512
 513                                                 $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
 514                                 } else if ($favicon_avg_color == 'fail') {
 515                                         _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
 516                                 }
 517
 518                                 db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 519                                         $favicon_colorstring
 520                                         WHERE id = '$feed'");
 521                         }
 522
 523                         _debug("loading filters & labels...", $debug_enabled);
 524
 525                         $filters = load_filters($feed, $owner_uid);
 526
 527                         _debug("" . count($filters) . " filters loaded.", $debug_enabled);
 528
 529                         $items = $rss->get_items();
 530
 531                         if (!is_array($items)) {
 532                                 _debug("no articles found.", $debug_enabled);
 533
 534                                 db_query("UPDATE ttrss_feeds
 535                                         SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
 536
 537                                 return; // no articles
 538                         }
 539
 540                         if ($pubsub_state != 2 && PUBSUBHUBBUB_ENABLED) {
 541
 542                                 _debug("checking for PUSH hub...", $debug_enabled);
 543
 544                                 $feed_hub_url = false;
 545
 546                                 $links = $rss->get_links('hub');
 547
 548                                 if ($links && is_array($links)) {
 549                                         foreach ($links as $l) {
 550                                                 $feed_hub_url = $l;
 551                                                 break;
 552                                         }
 553                                 }
 554
 555                                 _debug("feed hub url: $feed_hub_url", $debug_enabled);
 556
 557                                 $feed_self_url = $fetch_url;
 558
 559                                 $links = $rss->get_links('self');
 560
 561                                 if ($links && is_array($links)) {
 562                                         foreach ($links as $l) {
 563                                                 $feed_self_url = $l;
 564                                                 break;
 565                                         }
 566                                 }
 567
 568                                 _debug("feed self url = $feed_self_url");
 569
 570                                 if ($feed_hub_url && $feed_self_url && function_exists('curl_init') &&
 571                                         !ini_get("open_basedir")) {
 572
 573                                         require_once 'lib/pubsubhubbub/subscriber.php';
 574
 575                                         $callback_url = get_self_url_prefix() .
 576                                                 "/public.php?op=pubsub&id=$feed";
 577
 578                                         $s = new Subscriber($feed_hub_url, $callback_url);
 579
 580                                         $rc = $s->subscribe($feed_self_url);
 581
 582                                         _debug("feed hub url found, subscribe request sent. [rc=$rc]", $debug_enabled);
 583
 584                                         db_query("UPDATE ttrss_feeds SET pubsub_state = 1
 585                                                 WHERE id = '$feed'");
 586                                 }
 587                         }
 588
 589                         _debug("processing articles...", $debug_enabled);
 590
 591                         foreach ($items as $item) {
 592                                 if ($_REQUEST['xdebug'] == 3) {
 593                                         print_r($item);
 594                                 }
 595
 596                                 $entry_guid = $item->get_id();
 597                                 if (!$entry_guid) $entry_guid = $item->get_link();
 598                                 if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 599                                 if (!$entry_guid) continue;
 600
 601                                 $entry_guid = "$owner_uid,$entry_guid";
 602
 603                                 $entry_guid_hashed = db_escape_string('SHA1:' . sha1($entry_guid));
 604
 605                                 _debug("guid $entry_guid / $entry_guid_hashed", $debug_enabled);
 606
 607                                 $entry_timestamp = "";
 608
 609                                 $entry_timestamp = $item->get_date();
 610
 611                                 _debug("orig date: " . $item->get_date(), $debug_enabled);
 612
 613                                 if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
 614                                         $entry_timestamp = time();
 615                                 }
 616
 617                                 $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 618
 619                                 _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 620
 621 //                              $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
 622 //                              $entry_title = decode_numeric_entities($entry_title);
 623                                 $entry_title = $item->get_title();
 624
 625                                 $entry_link = rewrite_relative_url($site_url, $item->get_link());
 626
 627                                 _debug("title $entry_title", $debug_enabled);
 628                                 _debug("link $entry_link", $debug_enabled);
 629
 630                                 if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
 631
 632                                 $entry_content = $item->get_content();
 633                                 if (!$entry_content) $entry_content = $item->get_description();
 634
 635                                 if ($_REQUEST["xdebug"] == 2) {
 636                                         print "content: ";
 637                                         print $entry_content;
 638                                         print "\n";
 639                                 }
 640
 641                                 $entry_language = "";
 642
 643                                 if (DETECT_ARTICLE_LANGUAGE) {
 644                                         $entry_language = $lang->detect($entry_title . " " . $entry_content, 1);
 645
 646                                         if (count($entry_language) > 0) {
 647                                                 $possible = array_keys($entry_language);
 648                                                 $entry_language = $possible[0];
 649
 650                                                 _debug("detected language: $entry_language", $debug_enabled);
 651                                         } else {
 652                                                 $entry_language = "";
 653                                         }
 654                                 }
 655
 656                                 $entry_comments = $item->get_comments_url();
 657                                 $entry_author = $item->get_author();
 658
 659                                 $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 660
 661                                 $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
 662                                 $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
 663
 664                                 $num_comments = (int) $item->get_comments_count();
 665
 666                                 _debug("author $entry_author", $debug_enabled);
 667                                 _debug("num_comments: $num_comments", $debug_enabled);
 668                                 _debug("looking for tags...", $debug_enabled);
 669
 670                                 // parse <category> entries into tags
 671
 672                                 $additional_tags = array();
 673
 674                                 $additional_tags_src = $item->get_categories();
 675
 676                                 if (is_array($additional_tags_src)) {
 677                                         foreach ($additional_tags_src as $tobj) {
 678                                                 array_push($additional_tags, $tobj);
 679                                         }
 680                                 }
 681
 682                                 $entry_tags = array_unique($additional_tags);
 683
 684                                 for ($i = 0; $i < count($entry_tags); $i++)
 685                                         $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 686
 687                                 _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 688
 689                                 _debug("done collecting data.", $debug_enabled);
 690
 691                                 $result = db_query("SELECT id, content_hash FROM ttrss_entries
 692                                         WHERE guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed'");
 693
 694                                 if (db_num_rows($result) != 0) {
 695                                         $base_entry_id = db_fetch_result($result, 0, "id");
 696                                         $entry_stored_hash = db_fetch_result($result, 0, "content_hash");
 697                                         $article_labels = get_article_labels($base_entry_id, $owner_uid);
 698                                 } else {
 699                                         $base_entry_id = false;
 700                                         $entry_stored_hash = "";
 701                                         $article_labels = array();
 702                                 }
 703
 704                                 $article = array("owner_uid" => $owner_uid, // read only
 705                                         "guid" => $entry_guid, // read only
 706                                         "guid_hashed" => $entry_guid_hashed, // read only
 707                                         "title" => $entry_title,
 708                                         "content" => $entry_content,
 709                                         "link" => $entry_link,
 710                                         "labels" => $article_labels, // current limitation: can add labels to article, can't remove them
 711                                         "tags" => $entry_tags,
 712                                         "author" => $entry_author,
 713                                         "force_catchup" => false, // ugly hack for the time being
 714                                         "score_modifier" => 0, // no previous value, plugin should recalculate score modifier based on content if needed
 715                                         "language" => $entry_language, // read only
 716                                         "feed" => array("id" => $feed,
 717                                                 "fetch_url" => $fetch_url,
 718                                                 "site_url" => $site_url)
 719                                         );
 720
 721                                 $entry_plugin_data = "";
 722                                 $entry_current_hash = calculate_article_hash($article, $pluginhost);
 723
 724                                 _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
 725
 726                                 if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
 727                                         _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
 728
 729                                         // we keep encountering the entry in feeds, so we need to
 730                                         // update date_updated column so that we don't get horrible
 731                                         // dupes when the entry gets purged and reinserted again e.g.
 732                                         // in the case of SLOW SLOW OMG SLOW updating feeds
 733
 734                                         $base_entry_id = db_fetch_result($result, 0, "id");
 735
 736                                         db_query("UPDATE ttrss_entries SET date_updated = NOW()
 737                                                 WHERE id = '$base_entry_id'");
 738
 739                     // if we allow duplicate posts, we have to continue to
 740                     // create the user entries for this feed
 741                     if (!get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 742                         continue;
 743                     }
 744                                 }
 745
 746                                 _debug("hash differs, applying plugin filters:", $debug_enabled);
 747
 748                                 foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
 749                                         _debug("... " . get_class($plugin), $debug_enabled);
 750
 751                                         $start = microtime(true);
 752                                         $article = $plugin->hook_article_filter($article);
 753
 754                                         _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
 755
 756                                         $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
 757                                 }
 758
 759                                 $entry_plugin_data = db_escape_string($entry_plugin_data);
 760
 761                                 _debug("plugin data: $entry_plugin_data", $debug_enabled);
 762
 763                                 // Workaround: 4-byte unicode requires utf8mb4 in MySQL. See https://tt-rss.org/forum/viewtopic.php?f=1&t=3377&p=20077#p20077
 764                                 if (DB_TYPE == "mysql") {
 765                                         foreach ($article as $k => $v) {
 766                                                 $article[$k] = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $v);
 767                                         }
 768                                 }
 769
 770                                 $entry_tags = $article["tags"];
 771                                 $entry_guid = db_escape_string($entry_guid);
 772                                 $entry_title = db_escape_string($article["title"]);
 773                                 $entry_author = db_escape_string($article["author"]);
 774                                 $entry_link = db_escape_string($article["link"]);
 775                                 $entry_content = $article["content"]; // escaped below
 776                                 $entry_force_catchup = $article["force_catchup"];
 777                                 $article_labels = $article["labels"];
 778                                 $entry_score_modifier = (int) $article["score_modifier"];
 779
 780                                 if ($debug_enabled) {
 781                                         _debug("article labels:", $debug_enabled);
 782                                         print_r($article_labels);
 783                                 }
 784
 785                                 _debug("force catchup: $entry_force_catchup");
 786
 787                                 if ($cache_images && is_writable(CACHE_DIR . '/images'))
 788                                         cache_images($entry_content, $site_url, $debug_enabled);
 789
 790                                 $entry_content = db_escape_string($entry_content, false);
 791
 792                                 db_query("BEGIN");
 793
 794                                 $result = db_query("SELECT id FROM      ttrss_entries
 795                                         WHERE (guid = '$entry_guid' OR guid = '$entry_guid_hashed')");
 796
 797                                 if (db_num_rows($result) == 0) {
 798
 799                                         _debug("base guid [$entry_guid] not found", $debug_enabled);
 800
 801                                         // base post entry does not exist, create it
 802
 803                                         $result = db_query(
 804                                                 "INSERT INTO ttrss_entries
 805                                                         (title,
 806                                                         guid,
 807                                                         link,
 808                                                         updated,
 809                                                         content,
 810                                                         content_hash,
 811                                                         no_orig_date,
 812                                                         date_updated,
 813                                                         date_entered,
 814                                                         comments,
 815                                                         num_comments,
 816                                                         plugin_data,
 817                                                         lang,
 818                                                         author)
 819                                                 VALUES
 820                                                         ('$entry_title',
 821                                                         '$entry_guid_hashed',
 822                                                         '$entry_link',
 823                                                         '$entry_timestamp_fmt',
 824                                                         '$entry_content',
 825                                                         '$entry_current_hash',
 826                                                         false,
 827                                                         NOW(),
 828                                                         '$date_feed_processed',
 829                                                         '$entry_comments',
 830                                                         '$num_comments',
 831                                                         '$entry_plugin_data',
 832                                                         '$entry_language',
 833                                                         '$entry_author')");
 834
 835                                 } else {
 836                                         $base_entry_id = db_fetch_result($result, 0, "id");
 837                                 }
 838
 839                                 // now it should exist, if not - bad luck then
 840
 841                                 $result = db_query("SELECT id FROM ttrss_entries
 842                                         WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 843
 844                                 $entry_ref_id = 0;
 845                                 $entry_int_id = 0;
 846
 847                                 if (db_num_rows($result) == 1) {
 848
 849                                         _debug("base guid found, checking for user record", $debug_enabled);
 850
 851                                         $ref_id = db_fetch_result($result, 0, "id");
 852                                         $entry_ref_id = $ref_id;
 853
 854                                         /* $stored_guid = db_fetch_result($result, 0, "guid");
 855                                         if ($stored_guid != $entry_guid_hashed) {
 856                                                 if ($debug_enabled) _debug("upgrading compat guid to hashed one", $debug_enabled);
 857
 858                                                 db_query("UPDATE ttrss_entries SET guid = '$entry_guid_hashed' WHERE
 859                                                         id = '$ref_id'");
 860                                         } */
 861
 862                                         // check for user post link to main table
 863
 864                                         // do we allow duplicate posts with same GUID in different feeds?
 865                                         if (get_pref("ALLOW_DUPLICATE_POSTS", $owner_uid, false)) {
 866                                                 $dupcheck_qpart = "AND (feed_id = '$feed' OR feed_id IS NULL)";
 867                                         } else {
 868                                                 $dupcheck_qpart = "";
 869                                         }
 870
 871                                         /* Collect article tags here so we could filter by them: */
 872
 873                                         $article_filters = get_article_filters($filters, $entry_title,
 874                                                 $entry_content, $entry_link, $entry_timestamp, $entry_author,
 875                                                 $entry_tags);
 876
 877                                         if ($debug_enabled) {
 878                                                 _debug("article filters: ", $debug_enabled);
 879                                                 if (count($article_filters) != 0) {
 880                                                         print_r($article_filters);
 881                                                 }
 882                                         }
 883
 884                                         if (find_article_filter($article_filters, "filter")) {
 885                                                 db_query("COMMIT"); // close transaction in progress
 886                                                 continue;
 887                                         }
 888
 889                                         $score = calculate_article_score($article_filters) + $entry_score_modifier;
 890
 891                                         _debug("initial score: $score [including plugin modifier: $entry_score_modifier]", $debug_enabled);
 892
 893                                         $query = "SELECT ref_id, int_id FROM ttrss_user_entries WHERE
 894                                                         ref_id = '$ref_id' AND owner_uid = '$owner_uid'
 895                                                         $dupcheck_qpart";
 896
 897 //                                      if ($_REQUEST["xdebug"]) print "$query\n";
 898
 899                                         $result = db_query($query);
 900
 901                                         // okay it doesn't exist - create user entry
 902                                         if (db_num_rows($result) == 0) {
 903
 904                                                 _debug("user record not found, creating...", $debug_enabled);
 905
 906                                                 if ($score >= -500 && !find_article_filter($article_filters, 'catchup') && !$entry_force_catchup) {
 907                                                         $unread = 'true';
 908                                                         $last_read_qpart = 'NULL';
 909                                                 } else {
 910                                                         $unread = 'false';
 911                                                         $last_read_qpart = 'NOW()';
 912                                                 }
 913
 914                                                 if (find_article_filter($article_filters, 'mark') || $score > 1000) {
 915                                                         $marked = 'true';
 916                                                 } else {
 917                                                         $marked = 'false';
 918                                                 }
 919
 920                                                 if (find_article_filter($article_filters, 'publish')) {
 921                                                         $published = 'true';
 922                                                 } else {
 923                                                         $published = 'false';
 924                                                 }
 925
 926                                                 // N-grams
 927
 928                                                 /* if (DB_TYPE == "pgsql" and defined('_NGRAM_TITLE_DUPLICATE_THRESHOLD')) {
 929
 930                                                         $result = db_query("SELECT COUNT(*) AS similar FROM
 931                                                                         ttrss_entries,ttrss_user_entries
 932                                                                 WHERE ref_id = id AND updated >= NOW() - INTERVAL '7 day'
 933                                                                         AND similarity(title, '$entry_title') >= "._NGRAM_TITLE_DUPLICATE_THRESHOLD."
 934                                                                         AND owner_uid = $owner_uid");
 935
 936                                                         $ngram_similar = db_fetch_result($result, 0, "similar");
 937
 938                                                         _debug("N-gram similar results: $ngram_similar", $debug_enabled);
 939
 940                                                         if ($ngram_similar > 0) {
 941                                                                 $unread = 'false';
 942                                                         }
 943                                                 } */
 944
 945                                                 $last_marked = ($marked == 'true') ? 'NOW()' : 'NULL';
 946                                                 $last_published = ($published == 'true') ? 'NOW()' : 'NULL';
 947
 948                                                 $result = db_query(
 949                                                         "INSERT INTO ttrss_user_entries
 950                                                                 (ref_id, owner_uid, feed_id, unread, last_read, marked,
 951                                                                 published, score, tag_cache, label_cache, uuid,
 952                                                                 last_marked, last_published)
 953                                                         VALUES ('$ref_id', '$owner_uid', '$feed', $unread,
 954                                                                 $last_read_qpart, $marked, $published, '$score', '', '',
 955                                                                 '', $last_marked, $last_published)");
 956
 957                                                 if (PUBSUBHUBBUB_HUB && $published == 'true') {
 958                                                         $rss_link = get_self_url_prefix() .
 959                                                                 "/public.php?op=rss&id=-2&key=" .
 960                                                                 get_feed_access_key(-2, false, $owner_uid);
 961
 962                                                         $p = new Publisher(PUBSUBHUBBUB_HUB);
 963
 964                                                         /* $pubsub_result = */ $p->publish_update($rss_link);
 965                                                 }
 966
 967                                                 $result = db_query(
 968                                                         "SELECT int_id FROM ttrss_user_entries WHERE
 969                                                                 ref_id = '$ref_id' AND owner_uid = '$owner_uid' AND
 970                                                                 feed_id = '$feed' LIMIT 1");
 971
 972                                                 if (db_num_rows($result) == 1) {
 973                                                         $entry_int_id = db_fetch_result($result, 0, "int_id");
 974                                                 }
 975                                         } else {
 976                                                 _debug("user record FOUND", $debug_enabled);
 977
 978                                                 $entry_ref_id = db_fetch_result($result, 0, "ref_id");
 979                                                 $entry_int_id = db_fetch_result($result, 0, "int_id");
 980                                         }
 981
 982                                         _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 983
 984                                         db_query("UPDATE ttrss_entries
 985                                                 SET title = '$entry_title',
 986                                                         content = '$entry_content',
 987                                                         content_hash = '$entry_current_hash',
 988                                                         updated = '$entry_timestamp_fmt',
 989                                                         num_comments = '$num_comments',
 990                                                         plugin_data = '$entry_plugin_data',
 991                                                         author = '$entry_author',
 992                                                         lang = '$entry_language'
 993                                                 WHERE id = '$ref_id'");
 994
 995                                         // update aux data
 996                                         db_query("UPDATE ttrss_user_entries
 997                                                         SET score = '$score' WHERE ref_id = '$ref_id'");
 998
 999                                         if ($mark_unread_on_update) {
1000                                                 db_query("UPDATE ttrss_user_entries
1001                                                         SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
1002                                         }
1003                                 }
1004
1005                                 db_query("COMMIT");
1006
1007                                 _debug("assigning labels [other]...", $debug_enabled);
1008
1009                                 foreach ($article_labels as $label) {
1010                                         label_add_article($entry_ref_id, $label[1], $owner_uid);
1011                                 }
1012
1013                                 _debug("assigning labels [filters]...", $debug_enabled);
1014
1015                                 assign_article_to_label_filters($entry_ref_id, $article_filters,
1016                                         $owner_uid, $article_labels);
1017
1018                                 _debug("looking for enclosures...", $debug_enabled);
1019
1020                                 // enclosures
1021
1022                                 $enclosures = array();
1023
1024                                 $encs = $item->get_enclosures();
1025
1026                                 if (is_array($encs)) {
1027                                         foreach ($encs as $e) {
1028                                                 $e_item = array(
1029                                                         $e->link, $e->type, $e->length, $e->title, $e->width, $e->height);
1030                                                 array_push($enclosures, $e_item);
1031                                         }
1032                                 }
1033
1034                                 if ($debug_enabled) {
1035                                         _debug("article enclosures:", $debug_enabled);
1036                                         print_r($enclosures);
1037                                 }
1038
1039                                 db_query("BEGIN");
1040
1041 //                              debugging
1042 //                              db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
1043
1044                                 foreach ($enclosures as $enc) {
1045                                         $enc_url = db_escape_string($enc[0]);
1046                                         $enc_type = db_escape_string($enc[1]);
1047                                         $enc_dur = db_escape_string($enc[2]);
1048                                         $enc_title = db_escape_string($enc[3]);
1049                                         $enc_width = intval($enc[4]);
1050                                         $enc_height = intval($enc[5]);
1051
1052                                         $result = db_query("SELECT id FROM ttrss_enclosures
1053                                                 WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
1054
1055                                         if (db_num_rows($result) == 0) {
1056                                                 db_query("INSERT INTO ttrss_enclosures
1057                                                         (content_url, content_type, title, duration, post_id, width, height) VALUES
1058                                                         ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id', $enc_width, $enc_height)");
1059                                         }
1060                                 }
1061
1062                                 db_query("COMMIT");
1063
1064                                 // check for manual tags (we have to do it here since they're loaded from filters)
1065
1066                                 foreach ($article_filters as $f) {
1067                                         if ($f["type"] == "tag") {
1068
1069                                                 $manual_tags = trim_array(explode(",", $f["param"]));
1070
1071                                                 foreach ($manual_tags as $tag) {
1072                                                         if (tag_is_valid($tag)) {
1073                                                                 array_push($entry_tags, $tag);
1074                                                         }
1075                                                 }
1076                                         }
1077                                 }
1078
1079                                 // Skip boring tags
1080
1081                                 $boring_tags = trim_array(explode(",", mb_strtolower(get_pref(
1082                                         'BLACKLISTED_TAGS', $owner_uid, ''), 'utf-8')));
1083
1084                                 $filtered_tags = array();
1085                                 $tags_to_cache = array();
1086
1087                                 if ($entry_tags && is_array($entry_tags)) {
1088                                         foreach ($entry_tags as $tag) {
1089                                                 if (array_search($tag, $boring_tags) === false) {
1090                                                         array_push($filtered_tags, $tag);
1091                                                 }
1092                                         }
1093                                 }
1094
1095                                 $filtered_tags = array_unique($filtered_tags);
1096
1097                                 if ($debug_enabled) {
1098                                         _debug("filtered article tags:", $debug_enabled);
1099                                         print_r($filtered_tags);
1100                                 }
1101
1102                                 // Save article tags in the database
1103
1104                                 if (count($filtered_tags) > 0) {
1105
1106                                         db_query("BEGIN");
1107
1108                                         foreach ($filtered_tags as $tag) {
1109
1110                                                 $tag = sanitize_tag($tag);
1111                                                 $tag = db_escape_string($tag);
1112
1113                                                 if (!tag_is_valid($tag)) continue;
1114
1115                                                 $result = db_query("SELECT id FROM ttrss_tags
1116                                                         WHERE tag_name = '$tag' AND post_int_id = '$entry_int_id' AND
1117                                                         owner_uid = '$owner_uid' LIMIT 1");
1118
1119                                                         if ($result && db_num_rows($result) == 0) {
1120
1121                                                                 db_query("INSERT INTO ttrss_tags
1122                                                                         (owner_uid,tag_name,post_int_id)
1123                                                                         VALUES ('$owner_uid','$tag', '$entry_int_id')");
1124                                                         }
1125
1126                                                 array_push($tags_to_cache, $tag);
1127                                         }
1128
1129                                         /* update the cache */
1130
1131                                         $tags_to_cache = array_unique($tags_to_cache);
1132
1133                                         $tags_str = db_escape_string(join(",", $tags_to_cache));
1134
1135                                         db_query("UPDATE ttrss_user_entries
1136                                                 SET tag_cache = '$tags_str' WHERE ref_id = '$entry_ref_id'
1137                                                 AND owner_uid = $owner_uid");
1138
1139                                         db_query("COMMIT");
1140                                 }
1141
1142                                 _debug("article processed", $debug_enabled);
1143                         }
1144
1145                         _debug("purging feed...", $debug_enabled);
1146
1147                         purge_feed($feed, 0, $debug_enabled);
1148
1149                         db_query("UPDATE ttrss_feeds
1150                                 SET last_updated = NOW(), last_error = '' WHERE id = '$feed'");
1151
1152 //                      db_query("COMMIT");
1153
1154                 } else {
1155
1156                         $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
1157
1158                         _debug("fetch error: $error_msg", $debug_enabled);
1159
1160                         if (count($rss->errors()) > 1) {
1161                                 foreach ($rss->errors() as $error) {
1162                                         _debug("+ $error");
1163                                 }
1164                         }
1165
1166                         db_query(
1167                                 "UPDATE ttrss_feeds SET last_error = '$error_msg',
1168                                 last_updated = NOW() WHERE id = '$feed'");
1169
1170                         unset($rss);
1171                 }
1172
1173                 _debug("done", $debug_enabled);
1174
1175                 return $rss;
1176         }
1177
1178         function cache_images($html, $site_url, $debug) {
1179                 libxml_use_internal_errors(true);
1180
1181                 $charset_hack = '<head>
1182                         <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
1183                 </head>';
1184
1185                 $doc = new DOMDocument();
1186                 $doc->loadHTML($charset_hack . $html);
1187                 $xpath = new DOMXPath($doc);
1188
1189                 $entries = $xpath->query('(//img[@src])');
1190
1191                 foreach ($entries as $entry) {
1192                         if ($entry->hasAttribute('src')) {
1193                                 $src = rewrite_relative_url($site_url, $entry->getAttribute('src'));
1194
1195                                 $local_filename = CACHE_DIR . "/images/" . sha1($src) . ".png";
1196
1197                                 if ($debug) _debug("cache_images: downloading: $src to $local_filename");
1198
1199                                 if (!file_exists($local_filename)) {
1200                                         $file_content = fetch_file_contents($src);
1201
1202                                         if ($file_content && strlen($file_content) > _MIN_CACHE_IMAGE_SIZE) {
1203                                                 file_put_contents($local_filename, $file_content);
1204                                         }
1205                                 }
1206                         }
1207                 }
1208         }
1209
1210         function expire_error_log($debug) {
1211                 if ($debug) _debug("Removing old error log entries...");
1212
1213                 if (DB_TYPE == "pgsql") {
1214                         db_query("DELETE FROM ttrss_error_log
1215                                 WHERE created_at < NOW() - INTERVAL '7 days'");
1216                 } else {
1217                         db_query("DELETE FROM ttrss_error_log
1218                                 WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
1219                 }
1220
1221         }
1222
1223         function expire_lock_files($debug) {
1224                 //if ($debug) _debug("Removing old lock files...");
1225
1226                 $num_deleted = 0;
1227
1228                 if (is_writable(LOCK_DIRECTORY)) {
1229                         $files = glob(LOCK_DIRECTORY . "/*.lock");
1230
1231                         if ($files) {
1232                                 foreach ($files as $file) {
1233                                         if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
1234                                                 unlink($file);
1235                                                 ++$num_deleted;
1236                                         }
1237                                 }
1238                         }
1239                 }
1240
1241                 if ($debug) _debug("Removed $num_deleted old lock files.");
1242         }
1243
1244         function expire_cached_files($debug) {
1245                 foreach (array("simplepie", "images", "export", "upload") as $dir) {
1246                         $cache_dir = CACHE_DIR . "/$dir";
1247
1248 //                      if ($debug) _debug("Expiring $cache_dir");
1249
1250                         $num_deleted = 0;
1251
1252                         if (is_writable($cache_dir)) {
1253                                 $files = glob("$cache_dir/*");
1254
1255                                 if ($files) {
1256                                         foreach ($files as $file) {
1257                                                 if (time() - filemtime($file) > 86400*7) {
1258                                                         unlink($file);
1259
1260                                                         ++$num_deleted;
1261                                                 }
1262                                         }
1263                                 }
1264                         }
1265
1266                         if ($debug) _debug("$cache_dir: removed $num_deleted files.");
1267                 }
1268         }
1269
1270         /**
1271         * Source: http://www.php.net/manual/en/function.parse-url.php#104527
1272         * Returns the url query as associative array
1273         *
1274         * @param    string    query
1275         * @return    array    params
1276         */
1277         function convertUrlQuery($query) {
1278                 $queryParts = explode('&', $query);
1279
1280                 $params = array();
1281
1282                 foreach ($queryParts as $param) {
1283                         $item = explode('=', $param);
1284                         $params[$item[0]] = $item[1];
1285                 }
1286
1287                 return $params;
1288         }
1289
1290         function get_article_filters($filters, $title, $content, $link, $timestamp, $author, $tags) {
1291                 $matches = array();
1292
1293                 foreach ($filters as $filter) {
1294                         $match_any_rule = $filter["match_any_rule"];
1295                         $inverse = $filter["inverse"];
1296                         $filter_match = false;
1297
1298                         foreach ($filter["rules"] as $rule) {
1299                                 $match = false;
1300                                 $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
1301                                 $rule_inverse = $rule["inverse"];
1302
1303                                 if (!$reg_exp)
1304                                         continue;
1305
1306                                 switch ($rule["type"]) {
1307                                 case "title":
1308                                         $match = @preg_match("/$reg_exp/i", $title);
1309                                         break;
1310                                 case "content":
1311                                         // we don't need to deal with multiline regexps
1312                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1313
1314                                         $match = @preg_match("/$reg_exp/i", $content);
1315                                         break;
1316                                 case "both":
1317                                         // we don't need to deal with multiline regexps
1318                                         $content = preg_replace("/[\r\n\t]/", "", $content);
1319
1320                                         $match = (@preg_match("/$reg_exp/i", $title) || @preg_match("/$reg_exp/i", $content));
1321                                         break;
1322                                 case "link":
1323                                         $match = @preg_match("/$reg_exp/i", $link);
1324                                         break;
1325                                 case "author":
1326                                         $match = @preg_match("/$reg_exp/i", $author);
1327                                         break;
1328                                 case "tag":
1329                                         foreach ($tags as $tag) {
1330                                                 if (@preg_match("/$reg_exp/i", $tag)) {
1331                                                         $match = true;
1332                                                         break;
1333                                                 }
1334                                         }
1335                                         break;
1336                                 }
1337
1338                                 if ($rule_inverse) $match = !$match;
1339
1340                                 if ($match_any_rule) {
1341                                         if ($match) {
1342                                                 $filter_match = true;
1343                                                 break;
1344                                         }
1345                                 } else {
1346                                         $filter_match = $match;
1347                                         if (!$match) {
1348                                                 break;
1349                                         }
1350                                 }
1351                         }
1352
1353                         if ($inverse) $filter_match = !$filter_match;
1354
1355                         if ($filter_match) {
1356                                 foreach ($filter["actions"] AS $action) {
1357                                         array_push($matches, $action);
1358
1359                                         // if Stop action encountered, perform no further processing
1360                                         if ($action["type"] == "stop") return $matches;
1361                                 }
1362                         }
1363                 }
1364
1365                 return $matches;
1366         }
1367
1368         function find_article_filter($filters, $filter_name) {
1369                 foreach ($filters as $f) {
1370                         if ($f["type"] == $filter_name) {
1371                                 return $f;
1372                         };
1373                 }
1374                 return false;
1375         }
1376
1377         function find_article_filters($filters, $filter_name) {
1378                 $results = array();
1379
1380                 foreach ($filters as $f) {
1381                         if ($f["type"] == $filter_name) {
1382                                 array_push($results, $f);
1383                         };
1384                 }
1385                 return $results;
1386         }
1387
1388         function calculate_article_score($filters) {
1389                 $score = 0;
1390
1391                 foreach ($filters as $f) {
1392                         if ($f["type"] == "score") {
1393                                 $score += $f["param"];
1394                         };
1395                 }
1396                 return $score;
1397         }
1398
1399         function labels_contains_caption($labels, $caption) {
1400                 foreach ($labels as $label) {
1401                         if ($label[1] == $caption) {
1402                                 return true;
1403                         }
1404                 }
1405
1406                 return false;
1407         }
1408
1409         function assign_article_to_label_filters($id, $filters, $owner_uid, $article_labels) {
1410                 foreach ($filters as $f) {
1411                         if ($f["type"] == "label") {
1412                                 if (!labels_contains_caption($article_labels, $f["param"])) {
1413                                         label_add_article($id, $f["param"], $owner_uid);
1414                                 }
1415                         }
1416                 }
1417         }
1418
1419         function make_guid_from_title($title) {
1420                 return preg_replace("/[ \"\',.:;]/", "-",
1421                         mb_strtolower(strip_tags($title), 'utf-8'));
1422         }
1423
1424         /* function verify_feed_xml($feed_data) {
1425                 libxml_use_internal_errors(true);
1426                 $doc = new DOMDocument();
1427                 $doc->loadXML($feed_data);
1428                 $error = libxml_get_last_error();
1429                 libxml_clear_errors();
1430                 return $error;
1431         } */
1432
1433         function cleanup_counters_cache($debug) {
1434                 $result = db_query("DELETE FROM ttrss_counters_cache
1435                         WHERE feed_id > 0 AND
1436                         (SELECT COUNT(id) FROM ttrss_feeds WHERE
1437                                 id = feed_id AND
1438                                 ttrss_counters_cache.owner_uid = ttrss_feeds.owner_uid) = 0");
1439                 $frows = db_affected_rows($result);
1440
1441                 $result = db_query("DELETE FROM ttrss_cat_counters_cache
1442                         WHERE feed_id > 0 AND
1443                         (SELECT COUNT(id) FROM ttrss_feed_categories WHERE
1444                                 id = feed_id AND
1445                                 ttrss_cat_counters_cache.owner_uid = ttrss_feed_categories.owner_uid) = 0");
1446                 $crows = db_affected_rows($result);
1447
1448                 _debug("Removed $frows (feeds) $crows (cats) orphaned counter cache entries.");
1449         }
1450
1451         function housekeeping_common($debug) {
1452                 expire_cached_files($debug);
1453                 expire_lock_files($debug);
1454                 expire_error_log($debug);
1455
1456                 $count = update_feedbrowser_cache();
1457                 _debug("Feedbrowser updated, $count feeds processed.");
1458
1459                 purge_orphans( true);
1460                 cleanup_counters_cache($debug);
1461                 $rc = cleanup_tags( 14, 50000);
1462
1463                 _debug("Cleaned $rc cached tags.");
1464
1465                 PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
1466
1467         }
1468 ?>