move to psr-4 autoloader

1 files changed, 0 insertions, 2085 deletions

diff --git a/classes/rssutils.php b/classes/rssutils.php
deleted file mode 100755
index c340f6cad..000000000
--- a/classes/rssutils.php
+++ /dev/null
@@ -1,2085 +0,0 @@
-<?php
-class RSSUtils {
-
-	/**
-	 * @param array<string, mixed> $article
-	 */
-	static function calculate_article_hash(array $article, PluginHost $pluginhost): string {
-		$tmp = "";
-
-		$ignored_fields = [ "feed", "guid", "guid_hashed", "owner_uid", "force_catchup" ];
-
-		foreach ($article as $k => $v) {
-			if (in_array($k, $ignored_fields))
-				continue;
-
-			if ($k != "feed" && isset($v)) {
-				$x = strip_tags(
-					is_array($v) ? implode(",", array_keys($v)) : $v);
-
-				$tmp .= sha1("$k:" . sha1($x));
-			}
-		}
-
-		return sha1(implode(",", $pluginhost->get_plugin_names()) . $tmp);
-	}
-
-	// Strips utf8mb4 characters (i.e. emoji) for mysql
-	static function strip_utf8mb4(string $str): string {
-		return preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $str);
-	}
-
-	static function cleanup_feed_browser(): void {
-		$pdo = Db::pdo();
-		$pdo->query("DELETE FROM ttrss_feedbrowser_cache");
-	}
-
-	static function cleanup_feed_icons(): void {
-		$pdo = Db::pdo();
-		$sth = $pdo->prepare("SELECT id FROM ttrss_feeds WHERE id = ?");
-
-		$cache = DiskCache::instance('feed-icons');
-
-		if ($cache->is_writable()) {
-			$dh = opendir($cache->get_full_path(""));
-
-			if ($dh) {
-				while (($icon = readdir($dh)) !== false) {
-					if (preg_match('/^[0-9]{1,}$/', $icon) && $cache->get_mtime($icon) < time() - 86400 * Config::get(Config::CACHE_MAX_DAYS)) {
-
-						$sth->execute([(int)$icon]);
-
-						if ($sth->fetch()) {
-							$cache->put($icon, $cache->get($icon));
-						} else {
-							$icon_path = $cache->get_full_path($icon);
-
-							Debug::log("Removing orphaned feed icon: $icon_path");
-							unlink($icon_path);
-						}
-					}
-				}
-
-				closedir($dh);
-			}
-		}
-	}
-
-	/**
-	 * @param array<string, false|string> $options
-	 */
-	static function update_daemon_common(int $limit = 0, array $options = []): int {
-		$span = Tracer::start(__METHOD__);
-
-		if (!$limit) $limit = Config::get(Config::DAEMON_FEED_LIMIT);
-
-		if (Config::get_schema_version() != Config::SCHEMA_VERSION) {
-			die("Schema version is wrong, please upgrade the database.\n");
-		}
-
-		$pdo = Db::pdo();
-
-		if (!Config::get(Config::SINGLE_USER_MODE) && Config::get(Config::DAEMON_UPDATE_LOGIN_LIMIT) > 0) {
-			$login_limit = (int) Config::get(Config::DAEMON_UPDATE_LOGIN_LIMIT);
-
-			if (Config::get(Config::DB_TYPE) == "pgsql") {
-				$login_thresh_qpart = "AND last_login >= NOW() - INTERVAL '$login_limit days'";
-			} else {
-				$login_thresh_qpart = "AND last_login >= DATE_SUB(NOW(), INTERVAL $login_limit DAY)";
-			}
-		} else {
-			$login_thresh_qpart = "";
-		}
-
-		$default_interval = (int) Prefs::get_default(Prefs::DEFAULT_UPDATE_INTERVAL);
-
-		if (Config::get(Config::DB_TYPE) == "pgsql") {
-			$update_limit_qpart = "AND ((
-					update_interval = 0
-						AND (p.value IS NULL OR p.value != '-1')
-						AND last_updated < NOW() - CAST((COALESCE(p.value, '$default_interval') || ' minutes') AS INTERVAL)
-				) OR (
-					update_interval > 0
-					AND last_updated < NOW() - CAST((update_interval || ' minutes') AS INTERVAL)
-				) OR (
-					update_interval >= 0
-						AND (p.value IS NULL OR p.value != '-1')
-						AND (last_updated = '1970-01-01 00:00:00' OR last_updated IS NULL)
-				))";
-		} else {
-			$update_limit_qpart = "AND ((
-					update_interval = 0
-						AND (p.value IS NULL OR p.value != '-1')
-						AND last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(COALESCE(p.value, '$default_interval'), SIGNED INTEGER) MINUTE)
-				) OR (
-					update_interval > 0
-						AND last_updated < DATE_SUB(NOW(), INTERVAL update_interval MINUTE)
-				) OR (
-					update_interval >= 0
-						AND (p.value IS NULL OR p.value != '-1')
-						AND (last_updated = '1970-01-01 00:00:00' OR last_updated IS NULL)
-				))";
-		}
-
-		// Test if feed is currently being updated by another process.
-		if (Config::get(Config::DB_TYPE) == "pgsql") {
-			$updstart_thresh_qpart = "AND (last_update_started IS NULL OR last_update_started < NOW() - INTERVAL '10 minutes')";
-		} else {
-			$updstart_thresh_qpart = "AND (last_update_started IS NULL OR last_update_started < DATE_SUB(NOW(), INTERVAL 10 MINUTE))";
-		}
-
-		$query_limit = $limit ? sprintf("LIMIT %d", $limit) : "";
-
-		// Update the least recently updated feeds first
-		$query_order = "ORDER BY last_updated";
-
-		if (Config::get(Config::DB_TYPE) == "pgsql")
-			$query_order .= " NULLS FIRST";
-
-		$query = "SELECT f.feed_url, f.last_updated
-			FROM
-				ttrss_feeds f, ttrss_users u LEFT JOIN ttrss_user_prefs2 p ON
-					(p.owner_uid = u.id AND profile IS NULL AND pref_name = 'DEFAULT_UPDATE_INTERVAL')
-			WHERE
-				f.owner_uid = u.id AND
-				u.access_level NOT IN (".sprintf("%d, %d", UserHelper::ACCESS_LEVEL_DISABLED, UserHelper::ACCESS_LEVEL_READONLY).")
-				$login_thresh_qpart
-				$update_limit_qpart
-				$updstart_thresh_qpart
-				$query_order $query_limit";
-
-		//print "$query\n";
-
-		$res = $pdo->query($query);
-
-		$feeds_to_update = array();
-		while ($line = $res->fetch()) {
-			array_push($feeds_to_update, $line['feed_url']);
-		}
-
-		Debug::log(sprintf("Scheduled %d feeds to update...", count($feeds_to_update)));
-
-		// Update last_update_started before actually starting the batch
-		// in order to minimize collision risk for parallel daemon tasks
-		if (count($feeds_to_update) > 0) {
-			$feeds_qmarks = arr_qmarks($feeds_to_update);
-
-			$tmph = $pdo->prepare("UPDATE ttrss_feeds SET last_update_started = NOW()
-				WHERE feed_url IN ($feeds_qmarks)");
-			$tmph->execute($feeds_to_update);
-		}
-
-		$nf = 0;
-		$bstarted = microtime(true);
-
-		$batch_owners = [];
-
-		$user_query = "SELECT f.id,
-				last_updated,
-				f.owner_uid,
-				u.login AS owner,
-				f.title
-			FROM ttrss_feeds f, ttrss_users u LEFT JOIN ttrss_user_prefs2 p ON
-					(p.owner_uid = u.id AND profile IS NULL AND pref_name = 'DEFAULT_UPDATE_INTERVAL')
-			WHERE
-				f.owner_uid = u.id AND
-				u.access_level NOT IN (".sprintf("%d, %d", UserHelper::ACCESS_LEVEL_DISABLED, UserHelper::ACCESS_LEVEL_READONLY).")
-				AND feed_url = :feed
-				$login_thresh_qpart
-				$update_limit_qpart
-			ORDER BY f.id $query_limit";
-
-		//print "$user_query\n";
-
-		// since we have feed xml cached, we can deal with other feeds with the same url
-		$usth = $pdo->prepare($user_query);
-
-		foreach ($feeds_to_update as $feed) {
-			Debug::log("Base feed: $feed");
-
-			$usth->execute(["feed" => $feed]);
-
-			if ($tline = $usth->fetch()) {
-				Debug::log(sprintf("=> %s (ID: %d, U: %s [%d]), last updated: %s", $tline["title"], $tline["id"],
-					$tline["owner"], $tline["owner_uid"],
-					$tline["last_updated"] ? $tline["last_updated"] : "never"));
-
-				if (!in_array($tline["owner_uid"], $batch_owners))
-					array_push($batch_owners, $tline["owner_uid"]);
-
-				$fstarted = microtime(true);
-
-				$quiet = (isset($options["quiet"])) ? "--quiet" : "";
-				$log = function_exists("flock") && isset($options['log']) ? '--log '.$options['log'] : '';
-				$log_level = isset($options['log-level']) ? '--log-level '.$options['log-level'] : '';
-
-				/* shared hosting may have this disabled and it's not strictly required */
-				if (self::function_enabled('passthru')) {
-					$exit_code = 0;
-
-					passthru(Config::get(Config::PHP_EXECUTABLE) . " update.php --update-feed " . $tline["id"] . " --pidlock feed-" . $tline["id"] . " $quiet $log $log_level", $exit_code);
-
-					Debug::log(sprintf("<= %.4f (sec) exit code: %d", microtime(true) - $fstarted, $exit_code));
-
-					// -1 can be caused by a SIGCHLD handler which daemon master process installs (not every setup, apparently)
-					if ($exit_code != 0 && $exit_code != -1) {
-						$festh = $pdo->prepare("SELECT last_error FROM ttrss_feeds WHERE id = ?");
-						$festh->execute([$tline["id"]]);
-
-						if ($ferow = $festh->fetch()) {
-							$error_message = $ferow["last_error"];
-						} else {
-							$error_message = "N/A";
-						}
-
-						Debug::log("!! Last error: $error_message");
-
-						Logger::log(E_USER_NOTICE,
-							sprintf("Update process for feed %d (%s, owner UID: %d) failed with exit code: %d (%s).",
-								$tline["id"], clean($tline["title"]), $tline["owner_uid"], $exit_code, clean($error_message)));
-
-						$combined_error_message = sprintf("Update process failed with exit code: %d (%s)",
-							$exit_code, clean($error_message));
-
-						# mark failed feed as having an update error (unless it is already marked)
-						$fusth = $pdo->prepare("UPDATE ttrss_feeds SET last_error = ? WHERE id = ? AND last_error = ''");
-						$fusth->execute([$combined_error_message, $tline["id"]]);
-					}
-
-				} else {
-					try {
-						if (!self::update_rss_feed($tline["id"], true)) {
-							Logger::log(E_USER_NOTICE,
-								sprintf("Update request for feed %d (%s, owner UID: %d) failed: %s.",
-									$tline["id"], clean($tline["title"]), $tline["owner_uid"], clean(UrlHelper::$fetch_last_error)));
-						}
-
-						Debug::log(sprintf("<= %.4f (sec) (not using a separate process)", microtime(true) - $fstarted));
-
-					} catch (PDOException $e) {
-						Logger::log_error(E_USER_WARNING, $e->getMessage(), $e->getFile(), $e->getLine(), $e->getTraceAsString());
-
-						try {
-							$pdo->rollback();
-						} catch (PDOException $e) {
-							// it doesn't matter if there wasn't actually anything to rollback, PDO Exception can be
-							// thrown outside of an active transaction during feed update
-						}
-					}
-				}
-
-				++$nf;
-			}
-		}
-
-		if ($nf > 0) {
-			Debug::log(sprintf("Processed %d feeds in %.4f (sec), %.4f (sec/feed avg)", $nf,
-				microtime(true) - $bstarted, (microtime(true) - $bstarted) / $nf));
-		}
-
-		foreach ($batch_owners as $owner_uid) {
-			Debug::log("Running housekeeping tasks for user $owner_uid...");
-
-			self::housekeeping_user($owner_uid);
-		}
-
-		// Send feed digests by email if needed.
-		Digest::send_headlines_digests();
-
-		$span->end();
-
-		return $nf;
-	}
-
-	/** this is used when subscribing */
-	static function update_basic_info(int $feed_id): void {
-		$feed = ORM::for_table('ttrss_feeds')
-			->select_many('id', 'owner_uid', 'feed_url', 'auth_pass', 'auth_login', 'title', 'site_url')
-			->find_one($feed_id);
-
-		if ($feed) {
-			$pluginhost = new PluginHost();
-			$user_plugins = get_pref(Prefs::_ENABLED_PLUGINS, $feed->owner_uid);
-
-			$pluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_ALL);
-			$pluginhost->load((string)$user_plugins, PluginHost::KIND_USER, $feed->owner_uid);
-			//$pluginhost->load_data();
-
-			$basic_info = [];
-
-			$pluginhost->run_hooks_callback(PluginHost::HOOK_FEED_BASIC_INFO, function ($result) use (&$basic_info) {
-				$basic_info = $result;
-			}, $basic_info, $feed->feed_url, $feed->owner_uid, $feed_id, $feed->auth_login, $feed->auth_pass);
-
-			if (!$basic_info) {
-				$feed_data = UrlHelper::fetch([
-					'url' => $feed->feed_url,
-					'login' => $feed->auth_login,
-					'pass' => $feed->auth_pass,
-					'timeout' => Config::get(Config::FEED_FETCH_TIMEOUT),
-				]);
-
-				$feed_data = trim($feed_data);
-
-				if ($feed_data) {
-					$rss = new FeedParser($feed_data);
-					$rss->init();
-
-					if (!$rss->error()) {
-						$basic_info = [
-							'title' => mb_substr(clean($rss->get_title()), 0, 199),
-							'site_url' => mb_substr(UrlHelper::rewrite_relative($feed->feed_url, clean($rss->get_link())), 0, 245),
-						];
-					} else {
-						Debug::log(sprintf("unable to parse feed for basic info: %s", $rss->error()), Debug::LOG_VERBOSE);
-					}
-				} else {
-					Debug::log(sprintf("unable to fetch feed for basic info: %s [%s]", UrlHelper::$fetch_last_error, UrlHelper::$fetch_last_error_code), Debug::LOG_VERBOSE);
-				}
-			}
-
-			if ($basic_info && is_array($basic_info)) {
-				if (!empty($basic_info['title']) && (!$feed->title || $feed->title == '[Unknown]')) {
-					$feed->title = $basic_info['title'];
-				}
-
-				if (!empty($basic_info['site_url']) && $feed->site_url != $basic_info['site_url']) {
-					$feed->site_url = $basic_info['site_url'];
-				}
-
-				$feed->save();
-			}
-		}
-	}
-
-	static function update_rss_feed(int $feed, bool $no_cache = false, bool $html_output = false) : bool {
-
-		$span = Tracer::start(__METHOD__);
-		$span->setAttribute('func.args', json_encode(func_get_args()));
-
-		Debug::enable_html($html_output);
-		Debug::log("start", Debug::LOG_VERBOSE);
-
-		$pdo = Db::pdo();
-
-		/** @var DiskCache $cache */
-		$cache = DiskCache::instance('feeds');
-
-		if (Config::get(Config::DB_TYPE) == "pgsql") {
-			$favicon_interval_qpart = "favicon_last_checked < NOW() - INTERVAL '12 hour'";
-		} else {
-			$favicon_interval_qpart = "favicon_last_checked < DATE_SUB(NOW(), INTERVAL 12 HOUR)";
-		}
-
-		$feed_obj = ORM::for_table('ttrss_feeds')
-				->select_expr("ttrss_feeds.*,
-					".SUBSTRING_FOR_DATE."(last_unconditional, 1, 19) AS last_unconditional,
-					(favicon_is_custom IS NOT TRUE AND
-						(favicon_last_checked IS NULL OR $favicon_interval_qpart)) AS favicon_needs_check")
-				->find_one($feed);
-
-		if ($feed_obj) {
-			$feed_obj->last_update_started = Db::NOW();
-			$feed_obj->save();
-
-			$feed_language = mb_strtolower($feed_obj->feed_language);
-
-			if (!$feed_language) $feed_language = mb_strtolower(get_pref(Prefs::DEFAULT_SEARCH_LANGUAGE, $feed_obj->owner_uid));
-			if (!$feed_language) $feed_language = 'simple';
-
-			$user = ORM::for_table('ttrss_users')->find_one($feed_obj->owner_uid);
-
-			if ($user) {
-				if ($user->access_level == UserHelper::ACCESS_LEVEL_READONLY) {
-					Debug::log("error: denied update for $feed: permission denied by owner access level");
-					$span->end();
-					return false;
-				}
-			} else {
-				// this would indicate database corruption of some kind
-				Debug::log("error: owner not found for feed: $feed");
-				$span->end();
-				return false;
-			}
-
-		} else {
-			Debug::log("error: feeds table record not found for feed: $feed");
-			$span->end();
-			return false;
-		}
-
-		// feed was batch-subscribed or something, we need to get basic info
-		// this is not optimal currently as it fetches stuff separately TODO: optimize
-		if ($feed_obj->title == "[Unknown]" || empty($feed_obj->title) || empty($feed_obj->site_url)) {
-			Debug::log("setting basic feed info for $feed...");
-			self::update_basic_info($feed);
-		}
-
-		$date_feed_processed = date('Y-m-d H:i');
-
-		$cache_filename = sha1($feed_obj->feed_url) . ".xml";
-
-		$pluginhost = new PluginHost();
-		$user_plugins = get_pref(Prefs::_ENABLED_PLUGINS, $feed_obj->owner_uid);
-
-		$pluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_ALL);
-		$pluginhost->load((string)$user_plugins, PluginHost::KIND_USER, $feed_obj->owner_uid);
-
-		$rss_hash = false;
-
-		$force_refetch = isset($_REQUEST["force_refetch"]);
-		$dump_feed_xml = isset($_REQUEST["dump_feed_xml"]);
-		$feed_data = "";
-
-		Debug::log("running HOOK_FETCH_FEED handlers...", Debug::LOG_VERBOSE);
-
-		$start_ts = microtime(true);
-		$last_article_timestamp = 0;
-
-		$hff_owner_uid = $feed_obj->owner_uid;
-		$hff_feed_url = $feed_obj->feed_url;
-
-		$pluginhost->chain_hooks_callback(PluginHost::HOOK_FETCH_FEED,
-			function ($result, $plugin) use (&$feed_data, $start_ts) {
-				$feed_data = $result;
-				Debug::log(sprintf("=== %.4f (sec) %s", microtime(true) - $start_ts, get_class($plugin)), Debug::LOG_VERBOSE);
-			},
-			$feed_data, $hff_feed_url, $hff_owner_uid, $feed, $last_article_timestamp, $auth_login, $auth_pass);
-
-		if ($feed_data) {
-			Debug::log("feed data has been modified by a plugin.", Debug::LOG_VERBOSE);
-		} else {
-			Debug::log("feed data has not been modified by a plugin.", Debug::LOG_VERBOSE);
-		}
-
-		// try cache
-		if (!$feed_data &&
-			$cache->exists($cache_filename) &&
-			!$feed_obj->auth_login && !$feed_obj->auth_pass &&
-			$cache->get_mtime($cache_filename) > time() - 30) {
-
-			Debug::log("using local cache: {$cache_filename}.", Debug::LOG_VERBOSE);
-
-			$feed_data = $cache->get($cache_filename);
-
-			if ($feed_data) {
-				$rss_hash = sha1($feed_data);
-			}
-
-		} else {
-			Debug::log("local cache will not be used for this feed", Debug::LOG_VERBOSE);
-		}
-
-		// fetch feed from source
-		if (!$feed_data) {
-			Debug::log("last unconditional update request: {$feed_obj->last_unconditional}", Debug::LOG_VERBOSE);
-
-			if (ini_get("open_basedir") && function_exists("curl_init")) {
-				Debug::log("not using CURL due to open_basedir restrictions", Debug::LOG_VERBOSE);
-			}
-
-			if (time() - strtotime($feed_obj->last_unconditional ?? "") > Config::get(Config::MAX_CONDITIONAL_INTERVAL)) {
-				Debug::log("maximum allowed interval for conditional requests exceeded, forcing refetch", Debug::LOG_VERBOSE);
-
-				$force_refetch = true;
-			} else {
-				Debug::log("stored last modified for conditional request: {$feed_obj->last_modified}", Debug::LOG_VERBOSE);
-			}
-
-			Debug::log("fetching {$feed_obj->feed_url} (force_refetch: $force_refetch)...", Debug::LOG_VERBOSE);
-
-			$feed_data = UrlHelper::fetch([
-				"url" => $feed_obj->feed_url,
-				"login" => $feed_obj->auth_login,
-				"pass" => $feed_obj->auth_pass,
-				"timeout" => $no_cache ? Config::get(Config::FEED_FETCH_NO_CACHE_TIMEOUT) : Config::get(Config::FEED_FETCH_TIMEOUT),
-				"last_modified" => $force_refetch ? "" : $feed_obj->last_modified
-			]);
-
-			$feed_data = trim($feed_data);
-
-			Debug::log("fetch done.", Debug::LOG_VERBOSE);
-			Debug::log(sprintf("effective URL (after redirects): %s (IP: %s) ", UrlHelper::$fetch_effective_url, UrlHelper::$fetch_effective_ip_addr), Debug::LOG_VERBOSE);
-			Debug::log("server last modified: " . UrlHelper::$fetch_last_modified, Debug::LOG_VERBOSE);
-
-			if ($feed_data && UrlHelper::$fetch_last_modified != $feed_obj->last_modified) {
-				$feed_obj->last_modified = substr(UrlHelper::$fetch_last_modified, 0, 245);
-				$feed_obj->save();
-			}
-
-			// cache vanilla feed data for re-use
-			if ($feed_data && !$feed_obj->auth_pass && !$feed_obj->auth_login && $cache->is_writable()) {
-				$new_rss_hash = sha1($feed_data);
-
-				if ($new_rss_hash != $rss_hash) {
-					Debug::log("saving to local cache: $cache_filename", Debug::LOG_VERBOSE);
-					$cache->put($cache_filename, $feed_data);
-				}
-			}
-		}
-
-		if (!$feed_data) {
-			Debug::log(sprintf("unable to fetch: %s [%s]", UrlHelper::$fetch_last_error, UrlHelper::$fetch_last_error_code), Debug::LOG_VERBOSE);
-
-			// If-Modified-Since
-			if (UrlHelper::$fetch_last_error_code == 304) {
-				Debug::log("source claims data not modified (304), nothing to do.", Debug::LOG_VERBOSE);
-				$error_message = "";
-
-				$feed_obj->set([
-					'last_error' => '',
-					'last_successful_update' => Db::NOW(),
-					'last_updated' => Db::NOW(),
-				]);
-
-				$feed_obj->save();
-
-			} else if (UrlHelper::$fetch_last_error_code == 429) {
-
-				// randomize interval using Config::HTTP_429_THROTTLE_INTERVAL as a base value (1-2x)
-				$http_429_throttle_interval = rand(Config::get(Config::HTTP_429_THROTTLE_INTERVAL),
-					Config::get(Config::HTTP_429_THROTTLE_INTERVAL)*2);
-
-				$error_message = UrlHelper::$fetch_last_error;
-
-				Debug::log("source claims we're requesting too often (429), throttling updates for $http_429_throttle_interval seconds.",
-					Debug::LOG_VERBOSE);
-
-				$feed_obj->set([
-					'last_error' => $error_message . " (updates throttled for $http_429_throttle_interval seconds.)",
-					'last_successful_update' => Db::NOW($http_429_throttle_interval),
-					'last_updated' => Db::NOW($http_429_throttle_interval),
-				]);
-
-				$feed_obj->save();
-			} else {
-				$error_message = UrlHelper::$fetch_last_error;
-
-				$feed_obj->set([
-					'last_error' => $error_message,
-					'last_updated' => Db::NOW(),
-				]);
-
-				$feed_obj->save();
-			}
-
-			$span->end();
-			return $error_message == "";
-		}
-
-		Debug::log("running HOOK_FEED_FETCHED handlers...", Debug::LOG_VERBOSE);
-		$feed_data_checksum = md5($feed_data);
-
-		// because chain_hooks_callback() accepts variables by value
-		$pff_owner_uid = $feed_obj->owner_uid;
-		$pff_feed_url = $feed_obj->feed_url;
-
-		if ($dump_feed_xml) {
-			Debug::log("feed data before hooks:", Debug::LOG_VERBOSE);
-
-			Debug::log(Debug::SEPARATOR, Debug::LOG_VERBOSE);
-			print("<code class='feed-xml'>" . htmlspecialchars($feed_data). "</code>\n");
-			Debug::log(Debug::SEPARATOR, Debug::LOG_VERBOSE);
-		}
-
-		$start_ts = microtime(true);
-		$pluginhost->chain_hooks_callback(PluginHost::HOOK_FEED_FETCHED,
-			function ($result, $plugin) use (&$feed_data, $start_ts) {
-				$feed_data = $result;
-				Debug::log(sprintf("=== %.4f (sec) %s", microtime(true) - $start_ts, get_class($plugin)), Debug::LOG_VERBOSE);
-			},
-			$feed_data, $pff_feed_url, $pff_owner_uid, $feed);
-
-		if (md5($feed_data) != $feed_data_checksum) {
-			Debug::log("feed data has been modified by a plugin.", Debug::LOG_VERBOSE);
-		} else {
-			Debug::log("feed data has not been modified by a plugin.", Debug::LOG_VERBOSE);
-		}
-
-		if ($dump_feed_xml) {
-			Debug::log("feed data after hooks:", Debug::LOG_VERBOSE);
-
-			Debug::log(Debug::SEPARATOR, Debug::LOG_VERBOSE);
-			print("<code class='feed-xml'>" . htmlspecialchars($feed_data). "</code>\n");
-			Debug::log(Debug::SEPARATOR, Debug::LOG_VERBOSE);
-		}
-
-		$rss = new FeedParser($feed_data);
-		$rss->init();
-
-		if (!$rss->error()) {
-
-			Debug::log("running HOOK_FEED_PARSED handlers...", Debug::LOG_VERBOSE);
-
-			// We use local pluginhost here because we need to load different per-user feed plugins
-
-			$start_ts = microtime(true);
-			$pluginhost->chain_hooks_callback(PluginHost::HOOK_FEED_PARSED,
-				function($result, $plugin) use ($start_ts) {
-					Debug::log(sprintf("=== %.4f (sec) %s", microtime(true) - $start_ts, get_class($plugin)), Debug::LOG_VERBOSE);
-				},
-				$rss, $feed);
-
-			Debug::log("language: $feed_language", Debug::LOG_VERBOSE);
-			Debug::log("processing feed data...", Debug::LOG_VERBOSE);
-
-			// this is a fallback, in case RSSUtils::update_basic_info() fails.
-			// TODO: is this necessary? remove unless it is.
-			if (empty($feed_obj->site_url)) {
-				$feed_obj->site_url = mb_substr(UrlHelper::rewrite_relative($feed_obj->feed_url, clean($rss->get_link())), 0, 245);
-				$feed_obj->save();
-			}
-
-			Debug::log("site_url: {$feed_obj->site_url}", Debug::LOG_VERBOSE);
-			Debug::log("feed_title: {$rss->get_title()}", Debug::LOG_VERBOSE);
-
-			Debug::log('favicon: needs check: ' . ($feed_obj->favicon_needs_check ? 'true' : 'false')
-				. ', is custom: ' . ($feed_obj->favicon_is_custom ? 'true' : 'false')
-				. ", avg color: {$feed_obj->favicon_avg_color}",
-				Debug::LOG_VERBOSE);
-
-			if ($feed_obj->favicon_needs_check || $force_refetch
-				|| ($feed_obj->favicon_is_custom && !$feed_obj->favicon_avg_color)) {
-
-				// restrict update attempts to once per 12h
-				$feed_obj->favicon_last_checked = Db::NOW();
-				$feed_obj->save();
-
-				$favicon_cache = DiskCache::instance('feed-icons');
-
-				$favicon_modified = $favicon_cache->exists($feed) ? $favicon_cache->get_mtime($feed) : -1;
-
-				// don't try to redownload custom favicons
-				if (!$feed_obj->favicon_is_custom) {
-					Debug::log("favicon: trying to update favicon...", Debug::LOG_VERBOSE);
-					self::update_favicon($feed_obj->site_url, $feed);
-
-					if (!$favicon_cache->exists($feed) || $favicon_cache->get_mtime($feed) > $favicon_modified) {
-						$feed_obj->favicon_avg_color = null;
-						$feed_obj->save();
-					}
-				}
-
-				/* terrible hack: if we crash on floicon shit here, we won't check
-				 * the icon avgcolor again (unless icon got updated) */
-				if (file_exists($favicon_cache->get_full_path($feed)) && function_exists("imagecreatefromstring") && empty($feed_obj->favicon_avg_color)) {
-					require_once "colors.php";
-
-					Debug::log("favicon: trying to calculate average color...", Debug::LOG_VERBOSE);
-
-					$feed_obj->favicon_avg_color = 'fail';
-					$feed_obj->save();
-
-					$calculated_avg_color = \Colors\calculate_avg_color($favicon_cache->get_full_path($feed));
-					if ($calculated_avg_color) {
-						$feed_obj->favicon_avg_color = $calculated_avg_color;
-						$feed_obj->save();
-					}
-
-					Debug::log("favicon: calculated avg color: {$calculated_avg_color}, setting avg color: {$feed_obj->favicon_avg_color}", Debug::LOG_VERBOSE);
-
-				} else if ($feed_obj->favicon_avg_color == 'fail') {
-					Debug::log("floicon failed on $feed or a suitable avg color couldn't be determined, not trying to recalculate avg color", Debug::LOG_VERBOSE);
-				}
-			}
-
-			Debug::log("loading filters & labels...", Debug::LOG_VERBOSE);
-
-			$filters = self::load_filters($feed, $feed_obj->owner_uid);
-
-			if (Debug::get_loglevel() >= Debug::LOG_EXTENDED) {
-				print_r($filters);
-			}
-
-			Debug::log("" . count($filters) . " filters loaded.", Debug::LOG_VERBOSE);
-
-			$items = $rss->get_items();
-
-			if (!is_array($items)) {
-				Debug::log("no articles found.", Debug::LOG_VERBOSE);
-
-				$feed_obj->set([
-					'last_updated' => Db::NOW(),
-					'last_unconditional' => Db::NOW(),
-					'last_error' => '',
-				]);
-
-				$feed_obj->save();
-				$span->end();
-				return true; // no articles
-			}
-
-			Debug::log("processing articles...", Debug::LOG_VERBOSE);
-
-			$tstart = time();
-
-			foreach ($items as $item) {
-				$a_span = Tracer::start('article');
-
-				$pdo->beginTransaction();
-
-				Debug::log(Debug::SEPARATOR, Debug::LOG_VERBOSE);
-
-				if (Debug::get_loglevel() >= 3) {
-					print_r($item);
-				}
-
-				if (ini_get("max_execution_time") > 0 && time() - $tstart >= ((float)ini_get("max_execution_time") * 0.7)) {
-					Debug::log("looks like there's too many articles to process at once, breaking out.", Debug::LOG_VERBOSE);
-					$pdo->commit();
-					break;
-				}
-
-				$entry_guid = strip_tags($item->get_id());
-				if (!$entry_guid) $entry_guid = strip_tags($item->get_link());
-				if (!$entry_guid) $entry_guid = self::make_guid_from_title($item->get_title());
-
-				if (!$entry_guid) {
-					$pdo->commit();
-					continue;
-				}
-
-				$entry_guid_hashed_compat = 'SHA1:' . sha1("{$feed_obj->owner_uid},$entry_guid");
-				$entry_guid_hashed = json_encode(["ver" => 2, "uid" => $feed_obj->owner_uid, "hash" => 'SHA1:' . sha1($entry_guid)]);
-				$entry_guid = "$feed_obj->owner_uid,$entry_guid";
-
-				Debug::log("guid $entry_guid (hash: $entry_guid_hashed compat: $entry_guid_hashed_compat)", Debug::LOG_VERBOSE);
-
-				$entry_timestamp = (int)$item->get_date();
-
-				Debug::log(sprintf("orig date: %s (%s)", $item->get_date(), date("Y-m-d H:i:s", $item->get_date())),
-					Debug::LOG_VERBOSE);
-
-				$entry_title = strip_tags($item->get_title());
-
-				$entry_link = UrlHelper::rewrite_relative($feed_obj->site_url, clean($item->get_link()), "a", "href");
-
-				$entry_language = mb_substr(trim($item->get_language()), 0, 2);
-
-				Debug::log("title $entry_title", Debug::LOG_VERBOSE);
-				Debug::log("link $entry_link", Debug::LOG_VERBOSE);
-				Debug::log("language $entry_language", Debug::LOG_VERBOSE);
-
-				if (!$entry_title) $entry_title = date("Y-m-d H:i:s", $entry_timestamp);;
-
-				$entry_content = $item->get_content();
-				if (!$entry_content) $entry_content = $item->get_description();
-
-				if (Debug::get_loglevel() >= 3) {
-					print "content: ";
-					print htmlspecialchars($entry_content);
-					print "\n";
-				}
-
-				$entry_comments = mb_substr(strip_tags($item->get_comments_url()), 0, 245);
-				$num_comments = $item->get_comments_count();
-
-				$entry_author = strip_tags($item->get_author());
-				$entry_guid = mb_substr($entry_guid, 0, 245);
-
-				Debug::log("author $entry_author", Debug::LOG_VERBOSE);
-				Debug::log("looking for tags...", Debug::LOG_VERBOSE);
-
-				$entry_tags = $item->get_categories();
-				Debug::log("tags found: " . join(", ", $entry_tags), Debug::LOG_VERBOSE);
-
-				Debug::log("done collecting data.", Debug::LOG_VERBOSE);
-
-				$sth = $pdo->prepare("SELECT id, content_hash, lang FROM ttrss_entries
-					WHERE guid IN (?, ?, ?)");
-				$sth->execute([$entry_guid, $entry_guid_hashed, $entry_guid_hashed_compat]);
-
-				if ($row = $sth->fetch()) {
-					$base_entry_id = $row["id"];
-					$entry_stored_hash = $row["content_hash"];
-					$article_labels = Article::_get_labels($base_entry_id, $feed_obj->owner_uid);
-
-					$existing_tags = Article::_get_tags($base_entry_id, $feed_obj->owner_uid);
-					$entry_tags = array_unique([...$entry_tags, ...$existing_tags]);
-				} else {
-					$base_entry_id = false;
-					$entry_stored_hash = "";
-					$article_labels = array();
-				}
-
-				Debug::log("looking for enclosures...", Debug::LOG_VERBOSE);
-
-				// enclosures
-
-				$enclosures = array();
-
-				$encs = $item->get_enclosures();
-
-				if (is_array($encs)) {
-					foreach ($encs as $e) {
-
-						$pluginhost->chain_hooks_callback(PluginHost::HOOK_ENCLOSURE_IMPORTED,
-							function ($result) use (&$e) {
-								$e = $result;
-							},
-							$e, $feed);
-
-						// TODO: Just use FeedEnclosure (and modify it to cover whatever justified this)?
-						$e_item = array(
-							UrlHelper::rewrite_relative($feed_obj->site_url, $e->link, "", "", $e->type),
-							$e->type, $e->length, $e->title, $e->width, $e->height);
-
-						// Yet another episode of "mysql utf8_general_ci is gimped"
-						if (Config::get(Config::DB_TYPE) == "mysql" && Config::get(Config::MYSQL_CHARSET) != "UTF8MB4") {
-							for ($i = 0; $i < count($e_item); $i++) {
-								if (is_string($e_item[$i])) {
-									$e_item[$i] = self::strip_utf8mb4($e_item[$i]);
-								}
-							}
-						}
-
-						array_push($enclosures, $e_item);
-					}
-				}
-
-				$article = array("owner_uid" => $feed_obj->owner_uid, // read only
-					"guid" => $entry_guid, // read only
-					"guid_hashed" => $entry_guid_hashed, // read only
-					"title" => $entry_title,
-					"content" => $entry_content,
-					"link" => $entry_link,
-					"labels" => $article_labels, // current limitation: can add labels to article, can't remove them
-					"tags" => $entry_tags,
-					"author" => $entry_author,
-					"force_catchup" => false, // ugly hack for the time being
-					"score_modifier" => 0, // no previous value, plugin should recalculate score modifier based on content if needed
-					"language" => $entry_language,
-					"timestamp" => $entry_timestamp,
-					"num_comments" => $num_comments,
-					"enclosures" => $enclosures,
-					"feed" => array("id" => $feed,
-						"fetch_url" => $feed_obj->feed_url,
-						"site_url" => $feed_obj->site_url,
-						"cache_images" => $feed_obj->cache_images)
-				);
-
-				$entry_plugin_data = "";
-				$entry_current_hash = self::calculate_article_hash($article, $pluginhost);
-
-				Debug::log("article hash: $entry_current_hash [stored=$entry_stored_hash]", Debug::LOG_VERBOSE);
-
-				if ($entry_current_hash == $entry_stored_hash && !isset($_REQUEST["force_rehash"])) {
-					Debug::log("stored article seems up to date [IID: $base_entry_id], updating timestamp only.", Debug::LOG_VERBOSE);
-
-					// 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
-
-					$pdo->commit();
-
-					$entry_obj = ORM::for_table('ttrss_entries')
-						->find_one($base_entry_id)
-						->set('date_updated', Db::NOW())
-						->save();
-
-					continue;
-				}
-
-				Debug::log("hash differs, running HOOK_ARTICLE_FILTER handlers...", Debug::LOG_VERBOSE);
-
-				$start_ts = microtime(true);
-
-				$pluginhost->chain_hooks_callback(PluginHost::HOOK_ARTICLE_FILTER,
-					function ($result, $plugin) use (&$article, &$entry_plugin_data, $start_ts) {
-						$article = $result;
-
-						$entry_plugin_data .= mb_strtolower(get_class($plugin)) . ",";
-
-						Debug::log(sprintf("=== %.4f (sec) %s", microtime(true) - $start_ts, get_class($plugin)),
-							Debug::LOG_VERBOSE);
-					},
-					$article);
-
-				if (Debug::get_loglevel() >= 3) {
-					print "processed content: ";
-					print htmlspecialchars($article["content"]);
-					print "\n";
-				}
-
-				Debug::log("plugin data: {$entry_plugin_data}", Debug::LOG_VERBOSE);
-
-				// Workaround: 4-byte unicode requires utf8mb4 in MySQL. See https://tt-rss.org/forum/viewtopic.php?f=1&t=3377&p=20077#p20077
-				if (Config::get(Config::DB_TYPE) == "mysql" && Config::get(Config::MYSQL_CHARSET) != "UTF8MB4") {
-					foreach ($article as $k => $v) {
-						// i guess we'll have to take the risk of 4byte unicode labels & tags here
-						if (is_string($article[$k])) {
-							$article[$k] = self::strip_utf8mb4($v);
-						}
-					}
-				}
-
-				/* Collect article tags here so we could filter by them: */
-
-				$matched_rules = [];
-				$matched_filters = [];
-
-				$article_filters = self::get_article_filters($filters, $article["title"],
-					$article["content"], $article["link"], $article["author"],
-					$article["tags"], $matched_rules, $matched_filters);
-
-				// $article_filters should be renamed to something like $filter_actions; actual filter objects are in $matched_filters
-				$pluginhost->run_hooks(PluginHost::HOOK_FILTER_TRIGGERED,
-					$feed, $feed_obj->owner_uid, $article, $matched_filters, $matched_rules, $article_filters);
-
-				$matched_filter_ids = array_map(fn(array $f) => $f['id'], $matched_filters);
-
-				if (count($matched_filter_ids) > 0) {
-					$filter_objs = ORM::for_table('ttrss_filters2')
-						->where('owner_uid', $feed_obj->owner_uid)
-						->where_in('id', $matched_filter_ids)
-						->find_many();
-
-					foreach ($filter_objs as $filter_obj) {
-						$filter_obj->set('last_triggered', Db::NOW());
-						$filter_obj->save();
-					}
-				}
-
-				if (Debug::get_loglevel() >= Debug::LOG_EXTENDED) {
-					Debug::log("matched filters: ", Debug::LOG_VERBOSE);
-
-					if (count($matched_filters) != 0) {
-						print_r($matched_filters);
-					}
-
-					Debug::log("matched filter rules: ", Debug::LOG_VERBOSE);
-
-					if (count($matched_rules) != 0) {
-						print_r($matched_rules);
-					}
-
-					Debug::log("filter actions: ", Debug::LOG_VERBOSE);
-
-					if (count($article_filters) != 0) {
-						print_r($article_filters);
-					}
-				}
-
-				$plugin_filter_names = self::find_article_filters($article_filters, "plugin");
-				$plugin_filter_actions = $pluginhost->get_filter_actions();
-
-				if (count($plugin_filter_names) > 0) {
-					Debug::log("applying plugin filter actions...", Debug::LOG_VERBOSE);
-
-					foreach ($plugin_filter_names as $pfn) {
-						list($pfclass,$pfaction) = explode(":", $pfn["param"]);
-
-						if (isset($plugin_filter_actions[$pfclass])) {
-							$plugin = $pluginhost->get_plugin($pfclass);
-
-							Debug::log("... $pfclass: $pfaction", Debug::LOG_VERBOSE);
-
-							if ($plugin) {
-								$start = microtime(true);
-								$article = $plugin->hook_article_filter_action($article, $pfaction);
-
-								Debug::log(sprintf("=== %.4f (sec)", microtime(true) - $start), Debug::LOG_VERBOSE);
-							} else {
-								Debug::log("??? $pfclass: plugin object not found.", Debug::LOG_VERBOSE);
-							}
-						} else {
-							Debug::log("??? $pfclass: filter plugin not registered.", Debug::LOG_VERBOSE);
-						}
-					}
-				}
-
-				$entry_tags = $article["tags"];
-				$entry_title = strip_tags($article["title"]);
-				$entry_author = mb_substr(strip_tags($article["author"]), 0, 245);
-				$entry_link = strip_tags($article["link"]);
-				$entry_content = $article["content"]; // escaped below
-				$entry_force_catchup = $article["force_catchup"];
-				$article_labels = $article["labels"];
-				$entry_score_modifier = (int) $article["score_modifier"];
-				$entry_language = $article["language"];
-				$entry_timestamp = $article["timestamp"];
-				$num_comments = $article["num_comments"];
-				$enclosures = $article["enclosures"];
-
-				if ($entry_timestamp == -1 || !$entry_timestamp || $entry_timestamp > time()) {
-					$entry_timestamp = time();
-				}
-
-				$entry_timestamp_fmt = date("Y/m/d H:i:s", $entry_timestamp);
-
-				Debug::log("date: $entry_timestamp ($entry_timestamp_fmt)", Debug::LOG_VERBOSE);
-				Debug::log("num_comments: $num_comments", Debug::LOG_VERBOSE);
-
-				if (Debug::get_loglevel() >= Debug::LOG_EXTENDED) {
-					Debug::log("article labels:", Debug::LOG_VERBOSE);
-
-					if (count($article_labels) != 0) {
-						print_r($article_labels);
-					}
-				}
-
-				Debug::log("force catchup: $entry_force_catchup", Debug::LOG_VERBOSE);
-
-				if ($feed_obj->cache_images)
-					self::cache_media($entry_content, $feed_obj->site_url);
-
-				$csth = $pdo->prepare("SELECT id FROM ttrss_entries
-					WHERE guid IN (?, ?, ?)");
-				$csth->execute([$entry_guid, $entry_guid_hashed, $entry_guid_hashed_compat]);
-
-				if (!$row = $csth->fetch()) {
-
-					Debug::log("base guid [$entry_guid or $entry_guid_hashed] not found, creating...", Debug::LOG_VERBOSE);
-
-					// base post entry does not exist, create it
-
-					$usth = $pdo->prepare(
-						"INSERT INTO ttrss_entries
-							(title,
-							guid,
-							link,
-							updated,
-							content,
-							content_hash,
-							no_orig_date,
-							date_updated,
-							date_entered,
-							comments,
-							num_comments,
-							plugin_data,
-							lang,
-							author)
-						VALUES
-							(?, ?, ?, ?, ?, ?,
-							false,
-							NOW(),
-							?, ?, ?, ?,	?, ?)");
-
-						$usth->execute([$entry_title,
-							$entry_guid_hashed,
-							$entry_link,
-							$entry_timestamp_fmt,
-							"$entry_content",
-							$entry_current_hash,
-							$date_feed_processed,
-							$entry_comments,
-							(int)$num_comments,
-							$entry_plugin_data,
-							"$entry_language",
-							"$entry_author"]);
-
-				}
-
-				$csth->execute([$entry_guid, $entry_guid_hashed, $entry_guid_hashed_compat]);
-
-				$entry_ref_id = 0;
-				$entry_int_id = 0;
-
-				if ($row = $csth->fetch()) {
-
-					Debug::log("base guid found, checking for user record", Debug::LOG_VERBOSE);
-
-					$ref_id = $row['id'];
-					$entry_ref_id = $ref_id;
-
-					if (self::find_article_filter($article_filters, "filter")) {
-						Debug::log("article is filtered out, nothing to do.", Debug::LOG_VERBOSE);
-						$pdo->commit();
-						continue;
-					}
-
-					$score = self::calculate_article_score($article_filters) + $entry_score_modifier;
-
-					Debug::log("initial score: $score [including plugin modifier: $entry_score_modifier]", Debug::LOG_VERBOSE);
-
-					// check for user post link to main table
-
-					$sth = $pdo->prepare("SELECT ref_id, int_id FROM ttrss_user_entries WHERE
-							ref_id = ? AND owner_uid = ?");
-					$sth->execute([$ref_id, $feed_obj->owner_uid]);
-
-					// okay it doesn't exist - create user entry
-					if ($row = $sth->fetch()) {
-						$entry_ref_id = $row["ref_id"];
-						$entry_int_id = $row["int_id"];
-
-						Debug::log("user record FOUND: RID: $entry_ref_id, IID: $entry_int_id", Debug::LOG_VERBOSE);
-					} else {
-
-						Debug::log("user record not found, creating...", Debug::LOG_VERBOSE);
-
-						if ($score >= -500 && !self::find_article_filter($article_filters, 'catchup') && !$entry_force_catchup) {
-							$unread = 1;
-							$last_read_qpart = null;
-						} else {
-							$unread = 0;
-							$last_read_qpart = date("Y-m-d H:i"); // we can't use NOW() here because it gets quoted
-						}
-
-						if (self::find_article_filter($article_filters, 'mark') || $score > 1000) {
-							$marked = 1;
-						} else {
-							$marked = 0;
-						}
-
-						if (self::find_article_filter($article_filters, 'publish')) {
-							$published = 1;
-						} else {
-							$published = 0;
-						}
-
-						$last_marked = ($marked == 1) ? 'NOW()' : 'NULL';
-						$last_published = ($published == 1) ? 'NOW()' : 'NULL';
-
-						$sth = $pdo->prepare(
-							"INSERT INTO ttrss_user_entries
-								(ref_id, owner_uid, feed_id, unread, last_read, marked,
-								published, score, tag_cache, label_cache, uuid,
-								last_marked, last_published)
-							VALUES (?, ?, ?, ?, ?, ?, ?, ?, '', '', '', ".$last_marked.", ".$last_published.")");
-
-						$sth->execute([$ref_id, $feed_obj->owner_uid, $feed, $unread, $last_read_qpart, $marked,
-							$published, $score]);
-
-						$sth = $pdo->prepare("SELECT int_id FROM ttrss_user_entries WHERE
-								ref_id = ? AND owner_uid = ? AND
-								feed_id = ? LIMIT 1");
-
-						$sth->execute([$ref_id, $feed_obj->owner_uid, $feed]);
-
-						if ($row = $sth->fetch())
-							$entry_int_id = $row['int_id'];
-					}
-
-					Debug::log("resulting RID: $entry_ref_id, IID: $entry_int_id", Debug::LOG_VERBOSE);
-
-					if (Config::get(Config::DB_TYPE) == "pgsql")
-						$tsvector_qpart = "tsvector_combined = to_tsvector(:ts_lang, :ts_content),";
-					else
-						$tsvector_qpart = "";
-
-					$sth = $pdo->prepare("UPDATE ttrss_entries
-						SET title = :title,
-							$tsvector_qpart
-							content = :content,
-							content_hash = :content_hash,
-							updated = :updated,
-							date_updated = NOW(),
-							num_comments = :num_comments,
-							plugin_data = :plugin_data,
-							author = :author,
-							lang = :lang
-						WHERE id = :id");
-
-					$params = [":title" => $entry_title,
-						":content" => "$entry_content",
-						":content_hash" => $entry_current_hash,
-						":updated" => $entry_timestamp_fmt,
-						":num_comments" => (int)$num_comments,
-						":plugin_data" => $entry_plugin_data,
-						":author" => "$entry_author",
-						":lang" => $entry_language,
-						":id" => $ref_id];
-
-					if (Config::get(Config::DB_TYPE) == "pgsql") {
-						$params[":ts_lang"] = $feed_language;
-						$params[":ts_content"] = mb_substr(strip_tags($entry_title) . " " . \Soundasleep\Html2Text::convert($entry_content), 0, 900000);
-					}
-
-					$sth->execute($params);
-
-					// update aux data
-					$sth = $pdo->prepare("UPDATE ttrss_user_entries
-							SET score = ? WHERE ref_id = ?");
-					$sth->execute([$score, $ref_id]);
-
-					if ($feed_obj->mark_unread_on_update &&
-						!$entry_force_catchup &&
-						!self::find_article_filter($article_filters, 'catchup')) {
-
-						Debug::log("article updated, marking unread as requested.", Debug::LOG_VERBOSE);
-
-						$sth = $pdo->prepare("UPDATE ttrss_user_entries
-							SET last_read = null, unread = true WHERE ref_id = ?");
-						$sth->execute([$ref_id]);
-					} else {
-						Debug::log("article updated, but we're forbidden to mark it unread.", Debug::LOG_VERBOSE);
-					}
-				}
-
-				Debug::log("assigning labels [other]...", Debug::LOG_VERBOSE);
-
-				foreach ($article_labels as $label) {
-					Labels::add_article($entry_ref_id, $label[1], $feed_obj->owner_uid);
-				}
-
-				Debug::log("assigning labels [filters]...", Debug::LOG_VERBOSE);
-
-				self::assign_article_to_label_filters($entry_ref_id, $article_filters,
-					$feed_obj->owner_uid, $article_labels);
-
-				if ($feed_obj->cache_images)
-					self::cache_enclosures($enclosures, $feed_obj->site_url);
-
-				if (Debug::get_loglevel() >= Debug::LOG_EXTENDED) {
-					Debug::log("article enclosures:", Debug::LOG_VERBOSE);
-					print_r($enclosures);
-				}
-
-				$esth = $pdo->prepare("SELECT id FROM ttrss_enclosures
-						WHERE content_url = ? AND content_type = ? AND post_id = ?");
-
-				$usth = $pdo->prepare("INSERT INTO ttrss_enclosures
-							(content_url, content_type, title, duration, post_id, width, height) VALUES
-							(?, ?, ?, ?, ?, ?, ?)");
-
-				foreach ($enclosures as $enc) {
-					$enc_url = $enc[0];
-					$enc_type = $enc[1];
-					$enc_dur = (int)$enc[2];
-					$enc_title = $enc[3];
-					$enc_width = intval($enc[4]);
-					$enc_height = intval($enc[5]);
-
-					$esth->execute([$enc_url, $enc_type, $entry_ref_id]);
-
-					if (!$esth->fetch()) {
-						$usth->execute([$enc_url, $enc_type, (string)$enc_title, $enc_dur, $entry_ref_id, $enc_width, $enc_height]);
-					}
-				}
-
-				// check for manual tags (we have to do it here since they're loaded from filters)
-				foreach ($article_filters as $f) {
-					if ($f["type"] == "tag") {
-						$entry_tags = [...$entry_tags, ...FeedItem_Common::normalize_categories(explode(",", $f["param"]))];
-					}
-				}
-
-				// like boring tags, but filter-based
-				foreach ($article_filters as $f) {
-					if ($f["type"] == "ignore-tag") {
-						$entry_tags = array_diff($entry_tags,
-							FeedItem_Common::normalize_categories(explode(",", $f["param"])));
-					}
-				}
-
-				// Skip boring tags
-				$entry_tags = FeedItem_Common::normalize_categories(
-						array_diff($entry_tags,
-							FeedItem_Common::normalize_categories(explode(",",
-								get_pref(Prefs::BLACKLISTED_TAGS, $feed_obj->owner_uid)))));
-
-				Debug::log("resulting article tags: " . implode(", ", $entry_tags), Debug::LOG_VERBOSE);
-
-				// Save article tags in the database
-				if (count($entry_tags) > 0) {
-
-					$tsth = $pdo->prepare("SELECT id FROM ttrss_tags
-							WHERE tag_name = ? AND post_int_id = ? AND
-							owner_uid = ? LIMIT 1");
-
-					$usth = $pdo->prepare("INSERT INTO ttrss_tags
-									(owner_uid,tag_name,post_int_id)
-									VALUES (?, ?, ?)");
-
-					foreach ($entry_tags as $tag) {
-						$tsth->execute([$tag, $entry_int_id, $feed_obj->owner_uid]);
-
-						if (!$tsth->fetch()) {
-							$usth->execute([$feed_obj->owner_uid, $tag, $entry_int_id]);
-						}
-					}
-
-					/* update the cache */
-
-					$tsth = $pdo->prepare("UPDATE ttrss_user_entries
-						SET tag_cache = ? WHERE ref_id = ?
-						AND owner_uid = ?");
-
-					$tsth->execute([
-						join(",", $entry_tags),
-						$entry_ref_id,
-						$feed_obj->owner_uid
-					]);
-				}
-
-				Debug::log("article processed.", Debug::LOG_VERBOSE);
-
-				$pdo->commit();
-				$a_span->end();
-			}
-
-			Debug::log(Debug::SEPARATOR, Debug::LOG_VERBOSE);
-
-			Debug::log("purging feed...", Debug::LOG_VERBOSE);
-
-			Feeds::_purge($feed, 0);
-
-			$feed_obj->set([
-				'last_updated' => Db::NOW(),
-				'last_unconditional' => Db::NOW(),
-				'last_successful_update' => Db::NOW(),
-				'last_error' => '',
-			]);
-
-			$feed_obj->save();
-
-		} else {
-
-			$error_msg = mb_substr($rss->error(), 0, 245);
-
-			Debug::log("fetch error: $error_msg", Debug::LOG_VERBOSE);
-
-			if (count($rss->errors()) > 1) {
-				foreach ($rss->errors() as $error) {
-					Debug::log("+ $error", Debug::LOG_VERBOSE);
-				}
-			}
-
-			$feed_obj->set([
-				'last_updated' => Db::NOW(),
-				'last_unconditional' => Db::NOW(),
-				'last_error' => $error_msg,
-			]);
-
-			$feed_obj->save();
-
-			unset($rss);
-
-			Debug::log("update failed.", Debug::LOG_VERBOSE);
-			$span->end();
-			return false;
-		}
-
-		Debug::log("update done.", Debug::LOG_VERBOSE);
-		$span->end();
-		return true;
-	}
-
-	/**
-	 * TODO: move to DiskCache?
-	 *
-	 * @param array<int, array<string>> $enclosures An array of "enclosure arrays" [string $link, string $type, string $length, string, $title, string $width, string $height]
-	 * @see RSSUtils::update_rss_feed()
-	 * @see FeedEnclosure
-	 */
-	static function cache_enclosures(array $enclosures, string $site_url): void {
-		$cache = DiskCache::instance("images");
-
-		if ($cache->is_writable()) {
-			foreach ($enclosures as $enc) {
-
-				if (preg_match("/(image|audio|video)/", $enc[1])) {
-					$src = UrlHelper::rewrite_relative($site_url, $enc[0]);
-
-					$local_filename = sha1($src);
-
-					Debug::log("cache_enclosures: downloading: $src to $local_filename", Debug::LOG_VERBOSE);
-
-					if (!$cache->exists($local_filename)) {
-						$file_content = UrlHelper::fetch(array("url" => $src,
-							"http_referrer" => $src,
-							"max_size" => Config::get(Config::MAX_CACHE_FILE_SIZE)));
-
-						if ($file_content) {
-							$cache->put($local_filename, $file_content);
-						} else {
-							Debug::log("cache_enclosures: failed with ".UrlHelper::$fetch_last_error_code.": ".UrlHelper::$fetch_last_error);
-						}
-					}
-				}
-			}
-		}
-	}
-
-	/* TODO: move to DiskCache? */
-	static function cache_media_url(DiskCache $cache, string $url, string $site_url): void {
-		$url = UrlHelper::rewrite_relative($site_url, $url);
-		$local_filename = sha1($url);
-
-		Debug::log("cache_media: checking $url", Debug::LOG_VERBOSE);
-
-		if (!$cache->exists($local_filename)) {
-			Debug::log("cache_media: downloading: $url to $local_filename", Debug::LOG_VERBOSE);
-
-			$file_content = UrlHelper::fetch(array("url" => $url,
-				"http_referrer" => $url,
-				"max_size" => Config::get(Config::MAX_CACHE_FILE_SIZE)));
-
-			if ($file_content) {
-				$cache->put($local_filename, $file_content);
-			} else {
-				Debug::log("cache_media: failed with ".UrlHelper::$fetch_last_error_code.": ".UrlHelper::$fetch_last_error);
-			}
-		}
-	}
-
-	/* TODO: move to DiskCache? */
-	static function cache_media(string $html, string $site_url): void {
-		$cache = DiskCache::instance("images");
-
-		if ($html && $cache->is_writable()) {
-			$doc = new DOMDocument();
-			if (@$doc->loadHTML($html)) {
-				$xpath = new DOMXPath($doc);
-
-				$entries = $xpath->query('(//img[@src]|//source[@src|@srcset]|//video[@poster|@src])');
-
-				foreach ($entries as $entry) {
-					foreach (array('src', 'poster') as $attr) {
-						if ($entry->hasAttribute($attr) && strpos($entry->getAttribute($attr), "data:") !== 0) {
-							self::cache_media_url($cache, $entry->getAttribute($attr), $site_url);
-						}
-					}
-
-					if ($entry->hasAttribute("srcset")) {
-						$matches = self::decode_srcset($entry->getAttribute('srcset'));
-
-						for ($i = 0; $i < count($matches); $i++) {
-							self::cache_media_url($cache, $matches[$i]["url"], $site_url);
-						}
-					}
-				}
-			}
-		}
-	}
-
-	static function expire_error_log(): void {
-		Debug::log("Removing old error log entries...");
-
-		$pdo = Db::pdo();
-
-		if (Config::get(Config::DB_TYPE) == "pgsql") {
-			$pdo->query("DELETE FROM ttrss_error_log
-				WHERE created_at < NOW() - INTERVAL '7 days'");
-		} else {
-			$pdo->query("DELETE FROM ttrss_error_log
-				WHERE created_at < DATE_SUB(NOW(), INTERVAL 7 DAY)");
-		}
-	}
-
-	/**
-	 * @deprecated table not used
-	 */
-	static function expire_feed_archive(): void {
-		$pdo = Db::pdo();
-
-		$pdo->query("DELETE FROM ttrss_archived_feeds");
-	}
-
-	static function expire_lock_files(): void {
-		Debug::log("Removing old lock files...", Debug::LOG_VERBOSE);
-
-		$num_deleted = 0;
-
-		if (is_writable(Config::get(Config::LOCK_DIRECTORY))) {
-			$files = glob(Config::get(Config::LOCK_DIRECTORY) . "/*.lock");
-
-			if ($files) {
-				foreach ($files as $file) {
-					if (!file_is_locked(basename($file)) && time() - filemtime($file) > 86400*2) {
-						unlink($file);
-						++$num_deleted;
-					}
-				}
-			}
-		}
-
-		Debug::log("Removed $num_deleted old lock files.");
-	}
-
-	/**
-	 * Source: http://www.php.net/manual/en/function.parse-url.php#104527
-	 * Returns the url query as associative array
-	 *
-	 * @param    string    query
-	 * @return    array    params
-	 */
-	/* static function convertUrlQuery($query) {
-		$queryParts = explode('&', $query);
-
-		$params = array();
-
-		foreach ($queryParts as $param) {
-			$item = explode('=', $param);
-			$params[$item[0]] = $item[1];
-		}
-
-		return $params;
-	} */
-
-	/**
-	 * @param array<int, array<string, mixed>> $filters
-	 * @param array<int, string> $tags
-	 * @param array<int, array<string, mixed>>|null $matched_rules
-	 * @param array<int, array<string, mixed>>|null $matched_filters
-	 *
-	 * @return array<int, array<string, string>> An array of filter action arrays with keys "type" and "param"
-	 */
-	static function get_article_filters(array $filters, string $title, string $content, string $link, string $author, array $tags, array &$matched_rules = null, array &$matched_filters = null): array {
-		$span = Tracer::start(__METHOD__);
-
-		$matches = array();
-
-		foreach ($filters as $filter) {
-			$match_any_rule = $filter["match_any_rule"] ?? false;
-			$inverse = $filter["inverse"] ?? false;
-			$filter_match = false;
-			$last_processed_rule = false;
-			$regexp_matches = [];
-
-			foreach ($filter["rules"] as $rule) {
-				$match = false;
-				$reg_exp = str_replace('/', '\/', (string)$rule["reg_exp"]);
-				$reg_exp = str_replace("\n", "", $reg_exp); // reg_exp may be formatted with CRs now because of textarea, we need to strip those
-				$rule_inverse = $rule["inverse"] ?? false;
-				$last_processed_rule = $rule;
-
-				if (empty($reg_exp))
-					continue;
-
-				switch ($rule["type"]) {
-					case "title":
-						$match = @preg_match("/$reg_exp/iu", $title, $regexp_matches);
-						break;
-					case "content":
-						// we don't need to deal with multiline regexps
-						$content = (string)preg_replace("/[\r\n\t]/", "", $content);
-
-						$match = @preg_match("/$reg_exp/iu", $content, $regexp_matches);
-						break;
-					case "both":
-						// we don't need to deal with multiline regexps
-						$content = (string)preg_replace("/[\r\n\t]/", "", $content);
-
-						$match = (@preg_match("/$reg_exp/iu", $title, $regexp_matches) || @preg_match("/$reg_exp/iu", $content, $regexp_matches));
-						break;
-					case "link":
-						$match = @preg_match("/$reg_exp/iu", $link, $regexp_matches);
-						break;
-					case "author":
-						$match = @preg_match("/$reg_exp/iu", $author, $regexp_matches);
-						break;
-					case "tag":
-						if (count($tags) == 0)
-							array_push($tags, ''); // allow matching if there are no tags
-
-						foreach ($tags as $tag) {
-							if (@preg_match("/$reg_exp/iu", $tag, $regexp_matches)) {
-								$match = true;
-								break;
-							}
-						}
-						break;
-				}
-
-				if ($rule_inverse) $match = !$match;
-
-				if ($match_any_rule) {
-					if ($match) {
-						$filter_match = true;
-						break;
-					}
-				} else {
-					$filter_match = $match;
-					if (!$match) {
-						break;
-					}
-				}
-			}
-
-			if ($inverse) $filter_match = !$filter_match;
-
-			if ($filter_match) {
-				$last_processed_rule["regexp_matches"] = $regexp_matches;
-
-				if (is_array($matched_rules)) array_push($matched_rules, $last_processed_rule);
-				if (is_array($matched_filters)) array_push($matched_filters, $filter);
-
-				foreach ($filter["actions"] AS $action) {
-					array_push($matches, $action);
-
-					// if Stop action encountered, perform no further processing
-					if (isset($action["type"]) && $action["type"] == "stop") return $matches;
-				}
-			}
-		}
-
-		$span->end();
-
-		return $matches;
-	}
-
-	/**
-	 * @param array<int, array<string, string>> $filters An array of filter action arrays with keys "type" and "param"
-	 *
-	 * @return array<string, string>|null A filter action array with keys "type" and "param"
-	 */
-	static function find_article_filter(array $filters, string $filter_name): ?array {
-		foreach ($filters as $f) {
-			if ($f["type"] == $filter_name) {
-				return $f;
-			};
-		}
-		return null;
-	}
-
-	/**
-	 * @param array<int, array<string, string>> $filters An array of filter action arrays with keys "type" and "param"
-	 *
-	 * @return array<int, array<string, string>> An array of filter action arrays with keys "type" and "param"
-	 */
-	static function find_article_filters(array $filters, string $filter_name): array {
-		$results = array();
-
-		foreach ($filters as $f) {
-			if ($f["type"] == $filter_name) {
-				array_push($results, $f);
-			};
-		}
-		return $results;
-	}
-
-	/**
-	 * @param array<int, array<string, string>> $filters An array of filter action arrays with keys "type" and "param"
-	 */
-	static function calculate_article_score(array $filters): int {
-		$score = 0;
-
-		foreach ($filters as $f) {
-			if ($f["type"] == "score") {
-				$score += $f["param"];
-			};
-		}
-		return $score;
-	}
-
-	/**
-	 * @param array<int, array<int, int|string>> $labels An array of label arrays like [int $feed_id, string $caption, string $fg_color, string $bg_color]
-	 *
-	 * @see Article::_get_labels()
-	 */
-	static function labels_contains_caption(array $labels, string $caption): bool {
-		foreach ($labels as $label) {
-			if ($label[1] == $caption) {
-				return true;
-			}
-		}
-
-		return false;
-	}
-
-	/**
-	 * @param array<int, array<string, string>> $filters An array of filter action arrays with keys "type" and "param"
-	 * @param array<int, array<int, int|string>> $article_labels An array of label arrays like [int $feed_id, string $caption, string $fg_color, string $bg_color]
-	 */
-	static function assign_article_to_label_filters(int $id, array $filters, int $owner_uid, $article_labels): void {
-		foreach ($filters as $f) {
-			if ($f["type"] == "label") {
-				if (!self::labels_contains_caption($article_labels, $f["param"])) {
-					Labels::add_article($id, $f["param"], $owner_uid);
-				}
-			}
-		}
-	}
-
-	static function make_guid_from_title(string $title): ?string {
-		return preg_replace("/[ \"\',.:;]/", "-",
-			mb_strtolower(strip_tags($title), 'utf-8'));
-	}
-
-	/* counter cache is no longer used, if called truncate leftover data */
-	static function cleanup_counters_cache(): void {
-		$pdo = Db::pdo();
-
-		$pdo->query("DELETE FROM ttrss_counters_cache");
-		$pdo->query("DELETE FROM ttrss_cat_counters_cache");
-	}
-
-	static function disable_failed_feeds(): void {
-		if (Config::get(Config::DAEMON_UNSUCCESSFUL_DAYS_LIMIT) > 0) {
-
-			$pdo = Db::pdo();
-
-			$pdo->beginTransaction();
-
-			$days = Config::get(Config::DAEMON_UNSUCCESSFUL_DAYS_LIMIT);
-
-			if (Config::get(Config::DB_TYPE) == "pgsql") {
-				$interval_query = "last_successful_update < NOW() - INTERVAL '$days days' AND last_updated > NOW() - INTERVAL '1 days'";
-			} else /* if (Config::get(Config::DB_TYPE) == "mysql") */ {
-				$interval_query = "last_successful_update < DATE_SUB(NOW(), INTERVAL $days DAY) AND last_updated > DATE_SUB(NOW(), INTERVAL 1 DAY)";
-			}
-
-			$sth = $pdo->prepare("SELECT id, title, owner_uid
-				FROM ttrss_feeds
-				WHERE update_interval != -1 AND last_successful_update IS NOT NULL AND $interval_query");
-
-			$sth->execute();
-
-			while ($row = $sth->fetch()) {
-				Logger::log(E_USER_NOTICE,
-					sprintf("Auto disabling feed %d (%s, UID: %d) because it failed to update for %d days.",
-						$row["id"], clean($row["title"]), $row["owner_uid"], Config::get(Config::DAEMON_UNSUCCESSFUL_DAYS_LIMIT)));
-
-				Debug::log(sprintf("Auto-disabling feed %d (%s) (failed to update for %d days).", $row["id"],
-					clean($row["title"]), Config::get(Config::DAEMON_UNSUCCESSFUL_DAYS_LIMIT)));
-			}
-
-			$sth = $pdo->prepare("UPDATE ttrss_feeds SET update_interval = -1 WHERE
-				update_interval != -1 AND last_successful_update IS NOT NULL AND $interval_query");
-			$sth->execute();
-
-			$pdo->commit();
-		}
-	}
-
-	static function housekeeping_user(int $owner_uid): void {
-		$tmph = new PluginHost();
-
-		UserHelper::load_user_plugins($owner_uid, $tmph);
-
-		$tmph->run_hooks(PluginHost::HOOK_HOUSE_KEEPING);
-	}
-
-	/** migrates favicons from legacy storage in feed-icons/ to cache/feed-icons/using new naming (sans .ico suffix) */
-	static function migrate_feed_icons() : void {
-		$old_dir = Config::get(Config::ICONS_DIR);
-		$new_dir = Config::get(Config::CACHE_DIR) . '/feed-icons';
-
-		$dh = opendir($old_dir);
-
-		$cache = DiskCache::instance('feed-icons');
-
-		if ($dh) {
-			while (($old_filename = readdir($dh)) !== false) {
-				if (strpos($old_filename, ".ico") !== false) {
-					$new_filename = str_replace(".ico", "", $old_filename);
-					$old_full_path = "$old_dir/$old_filename";
-
-					if (is_file($old_full_path) && $cache->put($new_filename, file_get_contents($old_full_path))) {
-						unlink($old_full_path);
-					}
-				}
-			}
-
-			closedir($dh);
-		}
-	}
-
-	static function housekeeping_common(): void {
-		$cache = DiskCache::instance("");
-		$cache->expire_all();
-
-		self::migrate_feed_icons();
-		self::expire_lock_files();
-		self::expire_error_log();
-		self::expire_feed_archive();
-		self::cleanup_feed_browser();
-		self::cleanup_feed_icons();
-		self::disable_failed_feeds();
-
-		Article::_purge_orphans();
-		self::cleanup_counters_cache();
-
-		PluginHost::getInstance()->run_hooks(PluginHost::HOOK_HOUSE_KEEPING);
-	}
-
-	/**
-	 * @return false|string
-	 */
-	static function update_favicon(string $site_url, int $feed) {
-		$favicon_urls = self::get_favicon_urls($site_url);
-
-		if (count($favicon_urls) == 0) {
-			Debug::log("favicon: couldn't find any favicon URLs for $site_url", Debug::LOG_VERBOSE);
-			return false;
-		}
-
-		// i guess we'll have to go through all of them until something looks valid...
-		foreach ($favicon_urls as $favicon_url) {
-
-			// Limiting to "image" type misses those served with text/plain
-			$contents = UrlHelper::fetch([
-				'url' => $favicon_url,
-				'max_size' => Config::get(Config::MAX_FAVICON_FILE_SIZE),
-				//'type' => 'image',
-			]);
-
-			if (!$contents) {
-				Debug::log("favicon: fetching $favicon_url failed, skipping...", Debug::LOG_VERBOSE);
-				break;
-			}
-
-			// TODO: we could use mime_conent_type() here instead of below hacks but we'll need to
-			// save every favicon to disk and go from there.
-			// also, if SVG is allowed in the future, we'll need to specifically forbid 'image/svg+xml'.
-
-			// Crude image type matching.
-			// Patterns gleaned from the file(1) source code.
-			if (preg_match('/^\x00\x00\x01\x00/', $contents)) {
-				// 0       string  \000\000\001\000        MS Windows icon resource
-				//error_log("update_favicon: favicon_url=$favicon_url isa MS Windows icon resource");
-			}
-			elseif (preg_match('/^GIF8/', $contents)) {
-				// 0       string          GIF8            GIF image data
-				//error_log("update_favicon: favicon_url=$favicon_url isa GIF image");
-			}
-			elseif (preg_match('/^\x89PNG\x0d\x0a\x1a\x0a/', $contents)) {
-				// 0       string          \x89PNG\x0d\x0a\x1a\x0a         PNG image data
-				//error_log("update_favicon: favicon_url=$favicon_url isa PNG image");
-			}
-			elseif (preg_match('/^\xff\xd8/', $contents)) {
-				// 0       beshort         0xffd8          JPEG image data
-				//error_log("update_favicon: favicon_url=$favicon_url isa JPG image");
-			}
-			elseif (preg_match('/^BM/', $contents)) {
-				// 0	string		BM	PC bitmap (OS2, Windows BMP files)
-				//error_log("update_favicon, favicon_url=$favicon_url isa BMP image");
-			}
-			else {
-				//error_log("update_favicon: favicon_url=$favicon_url isa UNKNOWN type");
-				Debug::log("favicon $favicon_url type is unknown, skipping...", Debug::LOG_VERBOSE);
-				break;
-			}
-
-			$favicon_cache = DiskCache::instance('feed-icons');
-
-			if ($favicon_cache->is_writable()) {
-				Debug::log("favicon: $favicon_url looks valid, saving to cache", Debug::LOG_VERBOSE);
-
-				// we deal with this manually
-				if (!$favicon_cache->exists(".no-auto-expiry"))
-					$favicon_cache->put(".no-auto-expiry", "");
-
-				return $favicon_cache->put((string)$feed, $contents);
-			} else {
-				Debug::log("favicon: $favicon_url skipping, local cache is not writable", Debug::LOG_VERBOSE);
-			}
-		}
-
-		return false;
-	}
-
-	static function is_gzipped(string $feed_data): bool {
-		return strpos(substr($feed_data, 0, 3),
-				"\x1f" . "\x8b" . "\x08", 0) === 0;
-	}
-
-	/**
-	 * @return array<int, array<string, mixed>> An array of filter arrays with keys "id", "match_any_rule", "inverse", "rules", and "actions"
-	 */
-	static function load_filters(int $feed_id, int $owner_uid) {
-		$filters = array();
-
-		$feed_id = (int) $feed_id;
-		$cat_id = Feeds::_cat_of($feed_id);
-
-		if (!$cat_id)
-			$null_cat_qpart = "cat_id IS NULL OR";
-		else
-			$null_cat_qpart = "";
-
-		$pdo = Db::pdo();
-
-		$sth = $pdo->prepare("SELECT * FROM ttrss_filters2 WHERE
-				owner_uid = ? AND enabled = true ORDER BY order_id, title");
-		$sth->execute([$owner_uid]);
-
-		$check_cats = [...Feeds::_get_parent_cats($cat_id, $owner_uid), $cat_id];
-
-		$check_cats_str = join(",", $check_cats);
-		$check_cats_fullids = array_map(fn(int $a) => "CAT:$a", $check_cats);
-
-		while ($line = $sth->fetch()) {
-			$filter_id = $line["id"];
-
-			$match_any_rule = sql_bool_to_bool($line["match_any_rule"]);
-
-			$sth2 = $pdo->prepare("SELECT
-					r.reg_exp, r.inverse, r.feed_id, r.cat_id, r.cat_filter, r.match_on, t.name AS type_name
-					FROM ttrss_filters2_rules AS r,
-					ttrss_filter_types AS t
-					WHERE
-						(match_on IS NOT NULL OR
-						  (($null_cat_qpart (cat_id IS NULL AND cat_filter = false) OR cat_id IN ($check_cats_str)) AND
-						  (feed_id IS NULL OR feed_id = ?))) AND
-						filter_type = t.id AND filter_id = ?");
-			$sth2->execute([$feed_id, $filter_id]);
-
-			$rules = array();
-			$actions = array();
-
-			while ($rule_line = $sth2->fetch()) {
-				#				print_r($rule_line);
-
-				if ($rule_line["match_on"]) {
-					$match_on = json_decode($rule_line["match_on"], true);
-
-					if (in_array("0", $match_on) || in_array($feed_id, $match_on) || count(array_intersect($check_cats_fullids, $match_on)) > 0) {
-
-						$rule = array();
-						$rule["reg_exp"] = $rule_line["reg_exp"];
-						$rule["type"] = $rule_line["type_name"];
-						$rule["inverse"] = sql_bool_to_bool($rule_line["inverse"]);
-
-						array_push($rules, $rule);
-					} else if (!$match_any_rule) {
-						// this filter contains a rule that doesn't match to this feed/category combination
-						// thus filter has to be rejected
-
-						$rules = [];
-						break;
-					}
-
-				} else {
-
-					$rule = array();
-					$rule["reg_exp"] = $rule_line["reg_exp"];
-					$rule["type"] = $rule_line["type_name"];
-					$rule["inverse"] = sql_bool_to_bool($rule_line["inverse"]);
-
-					array_push($rules, $rule);
-				}
-			}
-
-			if (count($rules) > 0) {
-				$sth2 = $pdo->prepare("SELECT a.action_param,t.name AS type_name
-						FROM ttrss_filters2_actions AS a,
-						ttrss_filter_actions AS t
-						WHERE
-							action_id = t.id AND filter_id = ?");
-				$sth2->execute([$filter_id]);
-
-				while ($action_line = $sth2->fetch()) {
-					#				print_r($action_line);
-
-					$action = array();
-					$action["type"] = $action_line["type_name"];
-					$action["param"] = $action_line["action_param"];
-
-					array_push($actions, $action);
-				}
-			}
-
-			$filter = [];
-			$filter["id"] = $filter_id;
-			$filter["match_any_rule"] = sql_bool_to_bool($line["match_any_rule"]);
-			$filter["inverse"] = sql_bool_to_bool($line["inverse"]);
-			$filter["rules"] = $rules;
-			$filter["actions"] = $actions;
-
-			if (count($rules) > 0 && count($actions) > 0) {
-				array_push($filters, $filter);
-			}
-		}
-
-		return $filters;
-	}
-
-	/**
-	 * Returns first determined favicon URL for a feed.
-	 * @param string $url A feed or page URL
-	 * @access public
-	 * @return false|string The favicon URL string, or false if none was found.
-	 */
-	static function get_favicon_url(string $url) {
-
-		$favicon_urls = self::get_favicon_urls($url);
-
-		if (count($favicon_urls) > 0)
-			return $favicon_urls[0];
-		else
-			return false;
-	}
-
-	/**
-	 * Try to determine all favicon URLs for a feed.
-	 * adapted from wordpress favicon plugin by Jeff Minard (http://thecodepro.com/)
-	 * http://dev.wp-plugins.org/file/favatars/trunk/favatars.php
-	 *
-	 * @param string $url A feed or page URL
-	 * @access public
-	 * @return array<string> List of all determined favicon URLs or an empty array
-	 */
-	static function get_favicon_urls(string $url) : array {
-
-		$favicon_urls = [];
-
-		if ($html = @UrlHelper::fetch($url)) {
-
-			$doc = new DOMDocument();
-			if (@$doc->loadHTML($html)) {
-				$xpath = new DOMXPath($doc);
-
-				$base = $xpath->query('/html/head/base[@href]');
-				foreach ($base as $b) {
-					$url = UrlHelper::rewrite_relative($url, $b->getAttribute("href"));
-					break;
-				}
-
-				$entries = $xpath->query('/html/head/link[@rel="shortcut icon" or @rel="icon" or @rel="alternate icon"]');
-				if (count($entries) > 0) {
-					foreach ($entries as $entry) {
-						$favicon_url = UrlHelper::rewrite_relative($url, $entry->getAttribute("href"));
-
-						if ($favicon_url)
-							array_push($favicon_urls, $favicon_url);
-
-					}
-				}
-			}
-		}
-
-		if (count($favicon_urls) == 0) {
-			$favicon_url = UrlHelper::rewrite_relative($url, "/favicon.ico");
-
-			if ($favicon_url)
-							array_push($favicon_urls, $favicon_url);
-		}
-
-		return $favicon_urls;
-	}
-
-	/**
-	 * @see https://community.tt-rss.org/t/problem-with-img-srcset/3519
-	 *
-	 * @return array<int, array<string, string>> An array of srcset subitem arrays with keys "url" and "size"
-	 */
-	static function decode_srcset(string $srcset): array {
-		$matches = [];
-
-		preg_match_all(
-			'/(?:\A|,)\s*(?P<url>(?!,)\S+(?<!,))\s*(?P<size>\s\d+w|\s\d+(?:\.\d+)?(?:[eE][+-]?\d+)?x|)\s*(?=,|\Z)/',
-			$srcset, $matches, PREG_SET_ORDER
-		);
-
-		foreach ($matches as $m) {
-			array_push($matches, [
-				"url" => trim($m["url"]),
-				"size" => trim($m["size"])
-			]);
-		}
-
-		return $matches;
-	}
-
-	/**
-	 * @param array<int, array<string, string>> $matches An array of srcset subitem arrays with keys "url" and "size"
-	 */
-	static function encode_srcset(array $matches): string {
-		$tokens = [];
-
-		foreach ($matches as $m) {
-			array_push($tokens, trim($m["url"]) . " " . trim($m["size"]));
-		}
-
-		return implode(",", $tokens);
-	}
-
-	static function function_enabled(string $func): bool {
-		return !in_array($func,
-						explode(',', str_replace(" ", "", ini_get('disable_functions'))));
-	}
-}