]> git.wh0rd.org - tt-rss.git/blobdiff - include/rssfuncs.php
tweak article hash function
[tt-rss.git] / include / rssfuncs.php
index 8bc5fcbd8003e96d8feb3a43d668305e83856b43..754b4f4cc97fad7808241da9cd428c006b525eef 100644 (file)
@@ -1,7 +1,20 @@
 <?php
-       define('DAEMON_UPDATE_LOGIN_LIMIT', 30);
-       define('DAEMON_FEED_LIMIT', 100);
-       define('DAEMON_SLEEP_INTERVAL', 60);
+       define_default('DAEMON_UPDATE_LOGIN_LIMIT', 30);
+       define_default('DAEMON_FEED_LIMIT', 500);
+       define_default('DAEMON_SLEEP_INTERVAL', 120);
+       define_default('_MIN_CACHE_IMAGE_SIZE', 1024);
+
+       function calculate_article_hash($article) {
+               $tmp = "";
+
+               foreach ($article as $k => $v) {
+                       if ($k != "feed" && isset($v)) {
+                               $tmp .= sha1("$k:" . (is_array($v) ? implode(",", $v) : $v));
+                       }
+               }
+
+               return sha1(implode(",", PluginHost::getInstance()->get_plugin_names())) . ":" . sha1($tmp);
+       }
 
        function update_feedbrowser_cache() {
 
@@ -79,7 +92,7 @@
                        $login_thresh_qpart = "";
                }
 
-               // Test if the feed need a update (update interval exceded).
+               // Test if the feed need a update (update interval exceeded).
                if (DB_TYPE == "pgsql") {
                        $update_limit_qpart = "AND ((
                                        ttrss_feeds.update_interval = 0
                                ) OR (
                                        ttrss_feeds.update_interval > 0
                                        AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
-                               ) OR ttrss_feeds.last_updated IS NULL
-                               OR last_updated = '1970-01-01 00:00:00')";
+                               ) OR (ttrss_feeds.last_updated IS NULL
+                                       AND ttrss_user_prefs.value != '-1')
+                               OR (last_updated = '1970-01-01 00:00:00'
+                                       AND ttrss_user_prefs.value != '-1'))";
                } else {
                        $update_limit_qpart = "AND ((
                                        ttrss_feeds.update_interval = 0
                                ) OR (
                                        ttrss_feeds.update_interval > 0
                                        AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
-                               ) OR ttrss_feeds.last_updated IS NULL
-                               OR last_updated = '1970-01-01 00:00:00')";
+                               ) OR (ttrss_feeds.last_updated IS NULL
+                                       AND ttrss_user_prefs.value != '-1')
+                               OR (last_updated = '1970-01-01 00:00:00'
+                                       AND ttrss_user_prefs.value != '-1'))";
                }
 
                // Test if feed is currently being updated by another process.
                if (DB_TYPE == "pgsql") {
-                       $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '5 minutes')";
+                       $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '10 minutes')";
                } else {
-                       $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 5 MINUTE))";
+                       $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
                }
 
                // Test if there is a limit to number of updated feeds
                $query_limit = "";
                if($limit) $query_limit = sprintf("LIMIT %d", $limit);
 
-               $random_qpart = sql_random_function();
-
-               // We search for feed needing update.
-               $result = db_query("SELECT DISTINCT ttrss_feeds.feed_url,$random_qpart
+               $query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
                        FROM
                                ttrss_feeds, ttrss_users, ttrss_user_prefs
                        WHERE
                                ttrss_feeds.owner_uid = ttrss_users.id
+                               AND ttrss_user_prefs.profile IS NULL
                                AND ttrss_users.id = ttrss_user_prefs.owner_uid
                                AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
                                $login_thresh_qpart $update_limit_qpart
                                $updstart_thresh_qpart
-                       ORDER BY $random_qpart $query_limit");
+                               ORDER BY last_updated $query_limit";
+
+               // We search for feed needing update.
+               $result = db_query($query);
 
                if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 
                                WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
                }
 
-               expire_cached_files($debug);
-               expire_lock_files($debug);
-               expire_error_log($debug);
-
                $nf = 0;
 
                // For each feed, we call the feed update function.
 
                        // since we have the data cached, we can deal with other feeds with the same url
 
-                       $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated
+                       $tmp_result = db_query("SELECT DISTINCT ttrss_feeds.id,last_updated,ttrss_feeds.owner_uid
                        FROM ttrss_feeds, ttrss_users, ttrss_user_prefs WHERE
                                ttrss_user_prefs.owner_uid = ttrss_feeds.owner_uid AND
                                ttrss_users.id = ttrss_user_prefs.owner_uid AND
                                ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL' AND
+                               ttrss_user_prefs.profile IS NULL AND
                                feed_url = '".db_escape_string($feed)."' AND
                                (ttrss_feeds.update_interval > 0 OR
                                        ttrss_user_prefs.value != '-1')
                        ORDER BY ttrss_feeds.id $query_limit");
 
                        if (db_num_rows($tmp_result) > 0) {
+                               $rss = false;
+
                                while ($tline = db_fetch_assoc($tmp_result)) {
-                                       if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"]);
-                                       update_rss_feed($tline["id"], true);
+                                       if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"] . " " . $tline["owner_uid"]);
+
+                                       $rss = update_rss_feed($tline["id"], true, false);
+                                       _debug_suppress(false);
                                        ++$nf;
                                }
                        }
        } // function update_daemon_common
 
        // ignore_daemon is not used
-       function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false,
-               $override_url = false) {
-
-               require_once "lib/simplepie/simplepie.inc";
+       function update_rss_feed($feed, $ignore_daemon = false, $no_cache = false, $rss = false) {
 
                $debug_enabled = defined('DAEMON_EXTENDED_DEBUG') || $_REQUEST['xdebug'];
 
+               _debug_suppress(!$debug_enabled);
                _debug("start", $debug_enabled);
 
                $result = db_query("SELECT id,update_interval,auth_login,
-                       feed_url,auth_pass,cache_images,last_updated,
+                       feed_url,auth_pass,cache_images,
                        mark_unread_on_update, owner_uid,
-                       pubsub_state, auth_pass_encrypted
+                       pubsub_state, auth_pass_encrypted,
+                       (SELECT max(date_entered) FROM
+                               ttrss_entries, ttrss_user_entries where ref_id = id AND feed_id = '$feed') AS last_article_timestamp
                        FROM ttrss_feeds WHERE id = '$feed'");
 
                if (db_num_rows($result) == 0) {
                        return false;
                }
 
-               $last_updated = db_fetch_result($result, 0, "last_updated");
+               $last_article_timestamp = @strtotime(db_fetch_result($result, 0, "last_article_timestamp"));
+
+               if (defined('_DISABLE_HTTP_304'))
+                       $last_article_timestamp = 0;
+
                $owner_uid = db_fetch_result($result, 0, "owner_uid");
                $mark_unread_on_update = sql_bool_to_bool(db_fetch_result($result,
                        0, "mark_unread_on_update"));
 
                $feed = db_escape_string($feed);
 
-               if ($override_url) $fetch_url = $override_url;
-
                $date_feed_processed = date('Y-m-d H:i');
 
-               $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".feed";
+               $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".xml";
 
-               // Ignore cache if new feed or manual update.
-               $cache_age = ($no_cache || is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
-                       30 : get_feed_update_interval($feed) * 60;
+               $pluginhost = new PluginHost();
+               $pluginhost->set_debug($debug_enabled);
+               $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 
-               _debug("cache filename: $cache_filename exists: " . file_exists($cache_filename), $debug_enabled);
-               _debug("cache age: $cache_age; no cache: $no_cache", $debug_enabled);
+               $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
+               $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
+               $pluginhost->load_data();
 
-               $cached_feed_data_hash = false;
+               if ($rss && is_object($rss) && get_class($rss) == "FeedParser") {
+                       _debug("using previously initialized parser object");
+               } else {
+                       $rss_hash = false;
 
-               $rss = false;
-               $rss_hash = false;
-               $cache_timestamp = file_exists($cache_filename) ? filemtime($cache_filename) : 0;
-               $last_updated_timestamp = strtotime($last_updated);
+                       $force_refetch = isset($_REQUEST["force_refetch"]);
 
-               $force_refetch = isset($_REQUEST["force_refetch"]);
+                       foreach ($pluginhost->get_hooks(PluginHost::HOOK_FETCH_FEED) as $plugin) {
+                               $feed_data = $plugin->hook_fetch_feed($feed_data, $fetch_url, $owner_uid, $feed, $last_article_timestamp, $auth_login, $auth_pass);
+                       }
 
-               if (file_exists($cache_filename) &&
-                       is_readable($cache_filename) &&
-                       !$auth_login && !$auth_pass &&
-                       filemtime($cache_filename) > time() - $cache_age) {
+                       // try cache
+                       if (!$feed_data &&
+                               file_exists($cache_filename) &&
+                               is_readable($cache_filename) &&
+                               !$auth_login && !$auth_pass &&
+                               filemtime($cache_filename) > time() - 30) {
 
-                               _debug("using local cache.", $debug_enabled);
+                               _debug("using local cache [$cache_filename].", $debug_enabled);
 
-                               if ($cache_timestamp > $last_updated_timestamp) {
-                                       @$rss_data = file_get_contents($cache_filename);
+                               @$feed_data = file_get_contents($cache_filename);
 
-                                       if ($rss_data) {
-                                               $rss_hash = sha1($rss_data);
-                                               @$rss = unserialize($rss_data);
-                                       }
-                               } else if (!$force_refetch) {
-                                       _debug("local cache valid and older than last_updated, nothing to do.", $debug_enabled);
-                                       return;
+                               if ($feed_data) {
+                                       $rss_hash = sha1($feed_data);
                                }
-               }
 
-               if (!$rss) {
+                       } else {
+                               _debug("local cache will not be used for this feed", $debug_enabled);
+                       }
 
+                       // fetch feed from source
                        if (!$feed_data) {
-                               _debug("fetching [$fetch_url] (ts: $cache_timestamp/$last_updated_timestamp)", $debug_enabled);
+                               _debug("fetching [$fetch_url]...", $debug_enabled);
+                               _debug("If-Modified-Since: ".gmdate('D, d M Y H:i:s \G\M\T', $last_article_timestamp), $debug_enabled);
 
                                $feed_data = fetch_file_contents($fetch_url, false,
                                        $auth_login, $auth_pass, false,
                                        $no_cache ? FEED_FETCH_NO_CACHE_TIMEOUT : FEED_FETCH_TIMEOUT,
-                                       $force_refetch ? 0 : max($last_updated_timestamp, $cache_timestamp));
+                                       $force_refetch ? 0 : $last_article_timestamp);
 
                                global $fetch_curl_used;
 
 
                                _debug("fetch done.", $debug_enabled);
 
-                               if ($feed_data) {
+                               /* if ($feed_data) {
                                        $error = verify_feed_xml($feed_data);
 
                                        if ($error) {
                                                        if ($error) $feed_data = '';
                                                }
                                        }
+                               } */
+
+                               // cache vanilla feed data for re-use
+                               if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
+                                       $new_rss_hash = sha1($feed_data);
+
+                                       if ($new_rss_hash != $rss_hash) {
+                                               _debug("saving $cache_filename", $debug_enabled);
+                                               @file_put_contents($cache_filename, $feed_data);
+                                       }
                                }
                        }
 
                        }
                }
 
-               $pluginhost = new PluginHost();
-               $pluginhost->set_debug($debug_enabled, $debug_enabled);
-               $user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
-
-               $pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
-               $pluginhost->load($user_plugins, PluginHost::KIND_USER, $owner_uid);
-               $pluginhost->load_data();
-
                foreach ($pluginhost->get_hooks(PluginHost::HOOK_FEED_FETCHED) as $plugin) {
-                       $feed_data = $plugin->hook_feed_fetched($feed_data);
+                       $feed_data = $plugin->hook_feed_fetched($feed_data, $fetch_url, $owner_uid, $feed);
                }
 
+               // set last update to now so if anything *simplepie* crashes later we won't be
+               // continuously failing on the same feed
+               //db_query("UPDATE ttrss_feeds SET last_updated = NOW() WHERE id = '$feed'");
+
                if (!$rss) {
-                       $rss = new SimplePie();
-                       $rss->set_sanitize_class("SanitizeDummy");
-                       // simplepie ignores the above and creates default sanitizer anyway,
-                       // so let's override it...
-                       $rss->sanitize = new SanitizeDummy();
-                       $rss->set_output_encoding('UTF-8');
-                       $rss->set_raw_data($feed_data);
-                       $rss->enable_cache(false);
-
-                       @$rss->init();
+                       $rss = new FeedParser($feed_data);
+                       $rss->init();
+               }
+
+               if (DETECT_ARTICLE_LANGUAGE) {
+                       require_once "lib/languagedetect/LanguageDetect.php";
+
+                       $lang = new Text_LanguageDetect();
+                       $lang->setNameMode(2);
                }
 
 //             print_r($rss);
 
                if (!$rss->error()) {
 
-                       // cache data for later
-                       if (!$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
-                               $rss_data = serialize($rss);
-                               $new_rss_hash = sha1($rss_data);
-
-                               if ($new_rss_hash != $rss_hash) {
-                                       _debug("saving $cache_filename", $debug_enabled);
-                                       @file_put_contents($cache_filename, serialize($rss));
-                               }
-                       }
-
                        // We use local pluginhost here because we need to load different per-user feed plugins
                        $pluginhost->run_hooks(PluginHost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);
 
 
                        $site_url = db_escape_string(mb_substr(rewrite_relative_url($fetch_url, $rss->get_link()), 0, 245));
 
+                       _debug("site_url: $site_url", $debug_enabled);
+                       _debug("feed_title: " . $rss->get_title(), $debug_enabled);
+
                        if ($favicon_needs_check || $force_refetch) {
 
                                /* terrible hack: if we crash on floicon shit here, we won't check
-                                * the icon avgcolor again */
+                                * the icon avgcolor again (unless the icon got updated) */
 
-                               db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
-                                       id = '$feed'");
+                               $favicon_file = ICONS_DIR . "/$feed.ico";
+                               $favicon_modified = @filemtime($favicon_file);
 
                                _debug("checking favicon...", $debug_enabled);
 
-                               check_feed_favicon($site_url, $feed, $link);
-                               $favicon_file = ICONS_DIR . "/$feed.ico";
+                               check_feed_favicon($site_url, $feed);
+                               $favicon_modified_new = @filemtime($favicon_file);
+
+                               if ($favicon_modified_new > $favicon_modified)
+                                       $favicon_avg_color = '';
 
-                               if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color != 'fail') {
+                               if (file_exists($favicon_file) && function_exists("imagecreatefromstring") && $favicon_avg_color == '') {
                                                require_once "colors.php";
 
+                                               db_query("UPDATE ttrss_feeds SET favicon_avg_color = 'fail' WHERE
+                                                       id = '$feed'");
+
                                                $favicon_color = db_escape_string(
                                                        calculate_avg_color($favicon_file));
 
                                                $favicon_colorstring = ",favicon_avg_color = '".$favicon_color."'";
                                } else if ($favicon_avg_color == 'fail') {
-                                       _debug("floicon failed on this file, not trying to recalculate avg color");
+                                       _debug("floicon failed on this file, not trying to recalculate avg color", $debug_enabled);
                                }
 
                                db_query("UPDATE ttrss_feeds SET favicon_last_checked = NOW()
 
                                $feed_title = db_escape_string($rss->get_title());
 
-                               _debug("registering title: $feed_title", $debug_enabled);
+                               if ($feed_title) {
+                                       _debug("registering title: $feed_title", $debug_enabled);
 
-                               db_query("UPDATE ttrss_feeds SET
-                                       title = '$feed_title' WHERE id = '$feed'");
+                                       db_query("UPDATE ttrss_feeds SET
+                                               title = '$feed_title' WHERE id = '$feed'");
+                               }
                        }
 
                        if ($site_url && $orig_site_url != $site_url) {
 
                                _debug("feed hub url: $feed_hub_url", $debug_enabled);
 
-                               if ($feed_hub_url && function_exists('curl_init') &&
+                               $feed_self_url = $fetch_url;
+
+                               $links = $rss->get_links('self');
+
+                               if ($links && is_array($links)) {
+                                       foreach ($links as $l) {
+                                               $feed_self_url = $l;
+                                               break;
+                                       }
+                               }
+
+                               _debug("feed self url = $feed_self_url");
+
+                               if ($feed_hub_url && $feed_self_url && function_exists('curl_init') &&
                                        !ini_get("open_basedir")) {
 
                                        require_once 'lib/pubsubhubbub/subscriber.php';
 
                                        $s = new Subscriber($feed_hub_url, $callback_url);
 
-                                       $rc = $s->subscribe($fetch_url);
+                                       $rc = $s->subscribe($feed_self_url);
 
-                                       _debug("feed hub url found, subscribe request sent.", $debug_enabled);
+                                       _debug("feed hub url found, subscribe request sent. [rc=$rc]", $debug_enabled);
 
                                        db_query("UPDATE ttrss_feeds SET pubsub_state = 1
                                                WHERE id = '$feed'");
                                if (!$entry_guid) $entry_guid = $item->get_link();
                                if (!$entry_guid) $entry_guid = make_guid_from_title($item->get_title());
 
+                               _debug("f_guid $entry_guid", $debug_enabled);
+
                                if (!$entry_guid) continue;
 
                                $entry_guid = "$owner_uid,$entry_guid";
 
                                $entry_timestamp = "";
 
-                               $entry_timestamp = strtotime($item->get_date());
+                               $entry_timestamp = $item->get_date();
+
+                               _debug("orig date: " . $item->get_date(), $debug_enabled);
 
                                if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
                                        $entry_timestamp = time();
-                                       $no_orig_date = 'true';
-                               } else {
-                                       $no_orig_date = 'false';
                                }
 
                                $entry_timestamp_fmt = strftime("%Y/%m/%d %H:%M:%S", $entry_timestamp);
 
                                _debug("date $entry_timestamp [$entry_timestamp_fmt]", $debug_enabled);
 
-                               $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
+//                             $entry_title = html_entity_decode($item->get_title(), ENT_COMPAT, 'UTF-8');
+//                             $entry_title = decode_numeric_entities($entry_title);
+                               $entry_title = $item->get_title();
 
                                $entry_link = rewrite_relative_url($site_url, $item->get_link());
 
                                        print "\n";
                                }
 
-                               $entry_comments = $item->data["comments"];
+                               $entry_language = "";
 
-                               if ($item->get_author()) {
-                                       $entry_author_item = $item->get_author();
-                                       $entry_author = $entry_author_item->get_name();
-                                       if (!$entry_author) $entry_author = $entry_author_item->get_email();
+                               if (DETECT_ARTICLE_LANGUAGE) {
+                                       $entry_language = $lang->detect($entry_title . " " . $entry_content, 1);
+
+                                       if (count($entry_language) > 0) {
+                                               $entry_language = array_keys($entry_language);
+
+                                               // the fuck?
+                                               if (is_array($entry_language))
+                                                       $entry_language = "";
+                                               else
+                                                       $entry_language = db_escape_string(substr($entry_language[0], 0, 2));
+
+                                               _debug("detected language: $entry_language", $debug_enabled);
+                                       } else {
+                                               $entry_language = "";
+                                       }
                                }
 
+                               $entry_comments = $item->get_comments_url();
+                               $entry_author = $item->get_author();
+
                                $entry_guid = db_escape_string(mb_substr($entry_guid, 0, 245));
 
                                $entry_comments = db_escape_string(mb_substr(trim($entry_comments), 0, 245));
                                $entry_author = db_escape_string(mb_substr(trim($entry_author), 0, 245));
 
-                               $num_comments = $item->get_item_tags('http://purl.org/rss/1.0/modules/slash/', 'comments');
-
-                               if (is_array($num_comments) && is_array($num_comments[0])) {
-                                       $num_comments = (int) $num_comments[0]["data"];
-                               } else {
-                                       $num_comments = 0;
-                               }
+                               $num_comments = (int) $item->get_comments_count();
 
                                _debug("author $entry_author", $debug_enabled);
                                _debug("num_comments: $num_comments", $debug_enabled);
-                               _debug("looking for tags [1]...", $debug_enabled);
+                               _debug("looking for tags...", $debug_enabled);
 
                                // parse <category> entries into tags
 
 
                                if (is_array($additional_tags_src)) {
                                        foreach ($additional_tags_src as $tobj) {
-                                               array_push($additional_tags, $tobj->get_term());
+                                               array_push($additional_tags, $tobj);
                                        }
                                }
 
-                               _debug("category tags:", $debug_enabled);
-                               _debug("looking for tags [2]...", $debug_enabled);
-
                                $entry_tags = array_unique($additional_tags);
 
                                for ($i = 0; $i < count($entry_tags); $i++)
                                        $entry_tags[$i] = mb_strtolower($entry_tags[$i], 'utf-8');
 
-                               _debug("done collecting data.", $debug_enabled);
-
-                               // TODO: less memory-hungry implementation
+                               _debug("tags found: " . join(",", $entry_tags), $debug_enabled);
 
-                               _debug("applying plugin filters..", $debug_enabled);
+                               _debug("done collecting data.", $debug_enabled);
 
-                               // FIXME not sure if owner_uid is a good idea here, we may have a base entry without user entry (?)
-                               $result = db_query("SELECT plugin_data,title,content,link,tag_cache,author FROM ttrss_entries, ttrss_user_entries
-                                       WHERE ref_id = id AND (guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed') AND owner_uid = $owner_uid");
+                               $result = db_query("SELECT id, content_hash FROM ttrss_entries
+                                       WHERE guid = '".db_escape_string($entry_guid)."' OR guid = '$entry_guid_hashed'");
 
                                if (db_num_rows($result) != 0) {
-                                       $entry_plugin_data = db_fetch_result($result, 0, "plugin_data");
-                                       $stored_article = array("title" => db_fetch_result($result, 0, "title"),
-                                               "content" => db_fetch_result($result, 0, "content"),
-                                               "link" => db_fetch_result($result, 0, "link"),
-                                               "tags" => explode(",", db_fetch_result($result, 0, "tag_cache")),
-                                               "author" => db_fetch_result($result, 0, "author"));
+                                       $base_entry_id = db_fetch_result($result, 0, "id");
+                                       $entry_stored_hash = db_fetch_result($result, 0, "content_hash");
                                } else {
-                                       $entry_plugin_data = "";
-                                       $stored_article = array();
+                                       $base_entry_id = false;
+                                       $entry_stored_hash = "";
                                }
 
                                $article = array("owner_uid" => $owner_uid, // read only
                                        "content" => $entry_content,
                                        "link" => $entry_link,
                                        "tags" => $entry_tags,
-                                       "plugin_data" => $entry_plugin_data,
                                        "author" => $entry_author,
-                                       "stored" => $stored_article);
+                                       "feed" => array("id" => $feed,
+                                               "fetch_url" => $fetch_url,
+                                               "site_url" => $site_url)
+                                       );
+
+                               $entry_plugin_data = "";
+                               $entry_current_hash = calculate_article_hash($article);
+
+                               _debug("article hash: $entry_current_hash [stored=$entry_stored_hash]", $debug_enabled);
+
+                               if ($entry_current_hash == $entry_stored_hash) {
+                                       _debug("stored article seems up to date [IID: $base_entry_id], updating timestamp only", $debug_enabled);
+
+                                       // we keep encountering the entry in feeds, so we need to
+                                       // update date_updated column so that we don't get horrible
+                                       // dupes when the entry gets purged and reinserted again e.g.
+                                       // in the case of SLOW SLOW OMG SLOW updating feeds
+
+                                       $base_entry_id = db_fetch_result($result, 0, "id");
+
+                                       db_query("UPDATE ttrss_entries SET date_updated = NOW()
+                                               WHERE id = '$base_entry_id'");
+
+                                       continue;
+                               }
+
+                               _debug("hash differs, applying plugin filters:", $debug_enabled);
 
                                foreach ($pluginhost->get_hooks(PluginHost::HOOK_ARTICLE_FILTER) as $plugin) {
+                                       _debug("... " . get_class($plugin), $debug_enabled);
+
+                                       $start = microtime(true);
                                        $article = $plugin->hook_article_filter($article);
+
+                                       _debug("=== " . sprintf("%.4f (sec)", microtime(true) - $start), $debug_enabled);
+
+                                       $entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
                                }
 
+                               $entry_plugin_data = db_escape_string($entry_plugin_data);
+
+                               _debug("plugin data: $entry_plugin_data", $debug_enabled);
+
                                $entry_tags = $article["tags"];
                                $entry_guid = db_escape_string($entry_guid);
                                $entry_title = db_escape_string($article["title"]);
                                $entry_author = db_escape_string($article["author"]);
                                $entry_link = db_escape_string($article["link"]);
-                               $entry_plugin_data = db_escape_string($article["plugin_data"]);
                                $entry_content = $article["content"]; // escaped below
 
-
-                               _debug("plugin data: $entry_plugin_data", $debug_enabled);
-
                                if ($cache_images && is_writable(CACHE_DIR . '/images'))
                                        cache_images($entry_content, $site_url, $debug_enabled);
 
                                $entry_content = db_escape_string($entry_content, false);
 
-                               $content_hash = "SHA1:" . sha1($entry_content);
-
                                db_query("BEGIN");
 
                                $result = db_query("SELECT id FROM      ttrss_entries
                                                        updated,
                                                        content,
                                                        content_hash,
-                                                       cached_content,
                                                        no_orig_date,
                                                        date_updated,
                                                        date_entered,
                                                        comments,
                                                        num_comments,
                                                        plugin_data,
+                                                       lang,
                                                        author)
                                                VALUES
                                                        ('$entry_title',
                                                        '$entry_link',
                                                        '$entry_timestamp_fmt',
                                                        '$entry_content',
-                                                       '$content_hash',
-                                                       '',
-                                                       $no_orig_date,
+                                                       '$entry_current_hash',
+                                                       false,
                                                        NOW(),
                                                        '$date_feed_processed',
                                                        '$entry_comments',
                                                        '$num_comments',
                                                        '$entry_plugin_data',
+                                                       '$entry_language',
                                                        '$entry_author')");
 
                                        $article_labels = array();
 
                                } else {
-                                       // we keep encountering the entry in feeds, so we need to
-                                       // update date_updated column so that we don't get horrible
-                                       // dupes when the entry gets purged and reinserted again e.g.
-                                       // in the case of SLOW SLOW OMG SLOW updating feeds
-
                                        $base_entry_id = db_fetch_result($result, 0, "id");
 
-                                       db_query("UPDATE ttrss_entries SET date_updated = NOW()
-                                               WHERE id = '$base_entry_id'");
-
                                        $article_labels = get_article_labels($base_entry_id, $owner_uid);
                                }
 
                                // now it should exist, if not - bad luck then
 
-                               $result = db_query("SELECT
-                                               id,content_hash,no_orig_date,title,plugin_data,guid,
-                                               ".SUBSTRING_FOR_DATE."(date_updated,1,19) as date_updated,
-                                               ".SUBSTRING_FOR_DATE."(updated,1,19) as updated,
-                                               num_comments
-                                       FROM
-                                               ttrss_entries
+                               $result = db_query("SELECT id FROM ttrss_entries
                                        WHERE guid = '$entry_guid' OR guid = '$entry_guid_hashed'");
 
                                $entry_ref_id = 0;
 
                                        _debug("base guid found, checking for user record", $debug_enabled);
 
-                                       // this will be used below in update handler
-                                       $orig_content_hash = db_fetch_result($result, 0, "content_hash");
-                                       $orig_title = db_fetch_result($result, 0, "title");
-                                       $orig_num_comments = db_fetch_result($result, 0, "num_comments");
-                                       $orig_date_updated = strtotime(db_fetch_result($result,
-                                               0, "date_updated"));
-                                       $orig_plugin_data = db_fetch_result($result, 0, "plugin_data");
-
                                        $ref_id = db_fetch_result($result, 0, "id");
                                        $entry_ref_id = $ref_id;
 
 
                                                        $p = new Publisher(PUBSUBHUBBUB_HUB);
 
-                                                       $pubsub_result = $p->publish_update($rss_link);
+                                                       /* $pubsub_result = */ $p->publish_update($rss_link);
                                                }
 
                                                $result = db_query(
 
                                        _debug("RID: $entry_ref_id, IID: $entry_int_id", $debug_enabled);
 
-                                       $post_needs_update = false;
-                                       $update_insignificant = false;
-
-                                       if ($orig_num_comments != $num_comments) {
-                                               $post_needs_update = true;
-                                               $update_insignificant = true;
-                                       }
-
-                                       if ($entry_plugin_data != $orig_plugin_data) {
-                                               $post_needs_update = true;
-                                               $update_insignificant = true;
-                                       }
-
-                                       if ($content_hash != $orig_content_hash) {
-                                               $post_needs_update = true;
-                                               $update_insignificant = false;
-                                       }
-
-                                       if (db_escape_string($orig_title) != $entry_title) {
-                                               $post_needs_update = true;
-                                               $update_insignificant = false;
-                                       }
-
-                                       // if post needs update, update it and mark all user entries
-                                       // linking to this post as updated
-                                       if ($post_needs_update) {
-
-                                               if (defined('DAEMON_EXTENDED_DEBUG')) {
-                                                       _debug("post $entry_guid_hashed needs update...", $debug_enabled);
-                                               }
-
-//                                             print "<!-- post $orig_title needs update : $post_needs_update -->";
-
-                                               db_query("UPDATE ttrss_entries
-                                                       SET title = '$entry_title', content = '$entry_content',
-                                                               content_hash = '$content_hash',
-                                                               updated = '$entry_timestamp_fmt',
-                                                               num_comments = '$num_comments',
-                                                               plugin_data = '$entry_plugin_data'
-                                                       WHERE id = '$ref_id'");
-
-                                               if (!$update_insignificant) {
-                                                       if ($mark_unread_on_update) {
-                                                               db_query("UPDATE ttrss_user_entries
-                                                                       SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
-                                                       }
-                                               }
+                                       db_query("UPDATE ttrss_entries
+                                               SET title = '$entry_title',
+                                                       content = '$entry_content',
+                                                       content_hash = '$entry_current_hash',
+                                                       updated = '$entry_timestamp_fmt',
+                                                       num_comments = '$num_comments',
+                                                       plugin_data = '$entry_plugin_data',
+                                                       author = '$entry_author',
+                                                       lang = '$entry_language'
+                                               WHERE id = '$ref_id'");
+
+                                       if ($mark_unread_on_update) {
+                                               db_query("UPDATE ttrss_user_entries
+                                                       SET last_read = null, unread = true WHERE ref_id = '$ref_id'");
                                        }
                                }
 
                                if (is_array($encs)) {
                                        foreach ($encs as $e) {
                                                $e_item = array(
-                                                       $e->link, $e->type, $e->length);
+                                                       $e->link, $e->type, $e->length, $e->title, $e->width, $e->height);
                                                array_push($enclosures, $e_item);
                                        }
                                }
 
                                db_query("BEGIN");
 
+//                             debugging
+//                             db_query("DELETE FROM ttrss_enclosures WHERE post_id = '$entry_ref_id'");
+
                                foreach ($enclosures as $enc) {
                                        $enc_url = db_escape_string($enc[0]);
                                        $enc_type = db_escape_string($enc[1]);
                                        $enc_dur = db_escape_string($enc[2]);
+                                       $enc_title = db_escape_string($enc[3]);
+                                       $enc_width = intval($enc[4]);
+                                       $enc_height = intval($enc[5]);
 
                                        $result = db_query("SELECT id FROM ttrss_enclosures
                                                WHERE content_url = '$enc_url' AND post_id = '$entry_ref_id'");
 
                                        if (db_num_rows($result) == 0) {
                                                db_query("INSERT INTO ttrss_enclosures
-                                                       (content_url, content_type, title, duration, post_id) VALUES
-                                                       ('$enc_url', '$enc_type', '', '$enc_dur', '$entry_ref_id')");
+                                                       (content_url, content_type, title, duration, post_id, width, height) VALUES
+                                                       ('$enc_url', '$enc_type', '$enc_title', '$enc_dur', '$entry_ref_id', $enc_width, $enc_height)");
                                        }
                                }
 
                                _debug("article processed", $debug_enabled);
                        }
 
-                       if (!$last_updated) {
-                               _debug("new feed, catching it up...", $debug_enabled);
-                               catchup_feed($feed, false, $owner_uid);
-                       }
-
                        _debug("purging feed...", $debug_enabled);
 
                        purge_feed($feed, 0, $debug_enabled);
 
                        $error_msg = db_escape_string(mb_substr($rss->error(), 0, 245));
 
-                       _debug("error fetching feed: $error_msg", $debug_enabled);
+                       _debug("fetch error: $error_msg", $debug_enabled);
+
+                       if (count($rss->errors()) > 1) {
+                               foreach ($rss->errors() as $error) {
+                                       _debug("+ $error");
+                               }
+                       }
 
                        db_query(
                                "UPDATE ttrss_feeds SET last_error = '$error_msg',
-                                       last_updated = NOW() WHERE id = '$feed'");
-               }
+                               last_updated = NOW() WHERE id = '$feed'");
 
-               unset($rss);
+                       unset($rss);
+               }
 
                _debug("done", $debug_enabled);
+
+               return $rss;
        }
 
        function cache_images($html, $site_url, $debug) {
-               $cache_dir = CACHE_DIR . "/images";
-
                libxml_use_internal_errors(true);
 
                $charset_hack = '<head>
                                if (!file_exists($local_filename)) {
                                        $file_content = fetch_file_contents($src);
 
-                                       if ($file_content && strlen($file_content) > 1024) {
+                                       if ($file_content && strlen($file_content) > _MIN_CACHE_IMAGE_SIZE) {
                                                file_put_contents($local_filename, $file_content);
                                        }
                                }
 
-                               if (file_exists($local_filename)) {
+                               /* if (file_exists($local_filename)) {
                                        $entry->setAttribute('src', SELF_URL_PATH . '/image.php?url=' .
                                                base64_encode($src));
-                               }
+                               } */
                        }
                }
 
-               $node = $doc->getElementsByTagName('body')->item(0);
-
-               return $doc->saveXML($node);
+               //$node = $doc->getElementsByTagName('body')->item(0);
+               //return $doc->saveXML($node);
        }
 
        function expire_error_log($debug) {
        }
 
        function expire_lock_files($debug) {
-               if ($debug) _debug("Removing old lock files...");
+               //if ($debug) _debug("Removing old lock files...");
 
                $num_deleted = 0;
 
                        }
                }
 
-               if ($debug) _debug("Removed $num_deleted files.");
+               if ($debug) _debug("Removed $num_deleted old lock files.");
        }
 
        function expire_cached_files($debug) {
                foreach (array("simplepie", "images", "export", "upload") as $dir) {
                        $cache_dir = CACHE_DIR . "/$dir";
 
-                       if ($debug) _debug("Expiring $cache_dir");
+//                     if ($debug) _debug("Expiring $cache_dir");
 
                        $num_deleted = 0;
 
                                }
                        }
 
-                       if ($debug) _debug("Removed $num_deleted files.");
+                       if ($debug) _debug("$cache_dir: removed $num_deleted files.");
                }
        }
 
 
                        foreach ($filter["rules"] as $rule) {
                                $match = false;
-                               $reg_exp = $rule["reg_exp"];
+                               $reg_exp = str_replace('/', '\/', $rule["reg_exp"]);
                                $rule_inverse = $rule["inverse"];
 
                                if (!$reg_exp)
                                        $match = @preg_match("/$reg_exp/i", $author);
                                        break;
                                case "tag":
-                                       $tag_string = join(",", $tags);
-                                       $match = @preg_match("/$reg_exp/i", $tag_string);
+                                       foreach ($tags as $tag) {
+                                               if (@preg_match("/$reg_exp/i", $tag)) {
+                                                       $match = true;
+                                                       break;
+                                               }
+                                       }
                                        break;
                                }
 
                        mb_strtolower(strip_tags($title), 'utf-8'));
        }
 
-       function verify_feed_xml($feed_data) {
+       /* function verify_feed_xml($feed_data) {
                libxml_use_internal_errors(true);
                $doc = new DOMDocument();
                $doc->loadXML($feed_data);
                $error = libxml_get_last_error();
                libxml_clear_errors();
                return $error;
-       }
+       } */
+
+       function housekeeping_common($debug) {
+               expire_cached_files($debug);
+               expire_lock_files($debug);
+               expire_error_log($debug);
 
+               $count = update_feedbrowser_cache();
+               _debug("Feedbrowser updated, $count feeds processed.");
+
+               purge_orphans( true);
+               $rc = cleanup_tags( 14, 50000);
+
+               _debug("Cleaned $rc cached tags.");
+
+               PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING, "hook_house_keeping", "");
+
+       }
 ?>