wip: initial for config object

14 files changed, 98 insertions, 97 deletions

diff --git a/classes/api.php b/classes/api.php
index 5677cb908..6f3ee77db 100755
--- a/classes/api.php
+++ b/classes/api.php
@@ -57,7 +57,7 @@ class API extends Handler {
 		$password = clean($_REQUEST["password"]);
 		$password_base64 = base64_decode(clean($_REQUEST["password"]));
 
-		if (SINGLE_USER_MODE) $login = "admin";
+		if (Config::get(Config::SINGLE_USER_MODE)) $login = "admin";
 
 		if ($uid = UserHelper::find_user_by_login($login)) {
 			if (get_pref("ENABLE_API_ACCESS", $uid)) {
@@ -361,9 +361,10 @@ class API extends Handler {
 	}
 
 	function getConfig() {
-		$config = array(
-			"icons_dir" => ICONS_DIR,
-			"icons_url" => ICONS_URL);
+		$config = [
+			"icons_dir" => Config::get(Config::ICONS_DIR),
+			"icons_url" => Config::get(Config::ICONS_URL)
+		];
 
 		$config["daemon_is_running"] = file_is_locked("update_daemon.lock");
 
diff --git a/classes/article.php b/classes/article.php
index acd83694c..a2a38118b 100755
--- a/classes/article.php
+++ b/classes/article.php
@@ -85,7 +85,7 @@ class Article extends Handler_Protected {
 					content = ?, content_hash = ? WHERE id = ?");
 				$sth->execute([$content, $content_hash, $ref_id]);
 
-				if (DB_TYPE == "pgsql"){
+				if (Config::get(Config::DB_TYPE) == "pgsql") {
 					$sth = $pdo->prepare("UPDATE ttrss_entries
 					SET tsvector_combined = to_tsvector( :ts_content)
 					WHERE id = :id");
@@ -130,7 +130,7 @@ class Article extends Handler_Protected {
 
 			if ($row = $sth->fetch()) {
 				$ref_id = $row["id"];
-				if (DB_TYPE == "pgsql"){
+				if (Config::get(Config::DB_TYPE) == "pgsql"){
 					$sth = $pdo->prepare("UPDATE ttrss_entries
 					SET tsvector_combined = to_tsvector( :ts_content)
 					WHERE id = :id");
@@ -475,7 +475,7 @@ class Article extends Handler_Protected {
 
         // purge orphaned posts in main content table
 
-        if (DB_TYPE == "mysql")
+        if (Config::get(Config::DB_TYPE) == "mysql")
             $limit_qpart = "LIMIT 5000";
         else
             $limit_qpart = "";
diff --git a/classes/db.php b/classes/db.php
index 490cecd57..1ccaa3533 100755
--- a/classes/db.php
+++ b/classes/db.php
@@ -21,9 +21,9 @@ class Db
 		$db_host = defined('DB_HOST') && DB_HOST ? ';host=' . DB_HOST : '';
 
 		try {
-			$pdo = new PDO(DB_TYPE . ':dbname=' . DB_NAME . $db_host . $db_port,
-				DB_USER,
-				DB_PASS);
+			$pdo = new PDO(Config::get(Config::DB_TYPE) . ':dbname=' . Config::get(Config::DB_NAME) . $db_host . $db_port,
+				Config::get(Config::DB_USER),
+				Config::get(Config::DB_PASS));
 		} catch (Exception $e) {
 			print "<pre>Exception while creating PDO object:" . $e->getMessage() . "</pre>";
 			exit(101);
@@ -31,14 +31,14 @@ class Db
 
 		$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 
 			$pdo->query("set client_encoding = 'UTF-8'");
 			$pdo->query("set datestyle = 'ISO, european'");
 			$pdo->query("set TIME ZONE 0");
 			$pdo->query("set cpu_tuple_cost = 0.5");
 
-		} else if (DB_TYPE == "mysql") {
+		} else if (Config::get(Config::DB_TYPE) == "mysql") {
 			$pdo->query("SET time_zone = '+0:0'");
 
 			if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
@@ -68,7 +68,7 @@ class Db
 	}
 
 	public static function sql_random_function() {
-		if (DB_TYPE == "mysql") {
+		if (Config::get(Config::DB_TYPE) == "mysql") {
 			return "RAND()";
 		} else {
 			return "RANDOM()";
diff --git a/classes/digest.php b/classes/digest.php
index e0c23d705..9ac3f6a17 100644
--- a/classes/digest.php
+++ b/classes/digest.php
@@ -8,9 +8,9 @@ class Digest
 
 		Debug::log("Sending digests, batch of max $user_limit users, headline limit = $limit");
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$interval_qpart = "last_digest_sent < NOW() - INTERVAL '1 days'";
-		} else /* if (DB_TYPE == "mysql") */ {
+		} else /* if (Config::get(Config::DB_TYPE) == "mysql") */ {
 			$interval_qpart = "last_digest_sent < DATE_SUB(NOW(), INTERVAL 1 DAY)";
 		}
 
@@ -91,19 +91,19 @@ class Digest
 
 		$tpl->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
 		$tpl->setVariable('CUR_TIME', date('G:i', $local_ts));
-		$tpl->setVariable('TTRSS_HOST', SELF_URL_PATH);
+		$tpl->setVariable('TTRSS_HOST', Config::get(Config.Config::get(Config::SELF_URL_PATH)));
 
 		$tpl_t->setVariable('CUR_DATE', date('Y/m/d', $local_ts));
 		$tpl_t->setVariable('CUR_TIME', date('G:i', $local_ts));
-		$tpl_t->setVariable('TTRSS_HOST', SELF_URL_PATH);
+		$tpl_t->setVariable('TTRSS_HOST', Config::get(Config.Config::get(Config::SELF_URL_PATH)));
 
 		$affected_ids = array();
 
 		$days = (int) $days;
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$interval_qpart = "ttrss_entries.date_updated > NOW() - INTERVAL '$days days'";
-		} else /* if (DB_TYPE == "mysql") */ {
+		} else /* if (Config::get(Config::DB_TYPE) == "mysql") */ {
 			$interval_qpart = "ttrss_entries.date_updated > DATE_SUB(NOW(), INTERVAL $days DAY)";
 		}
 
diff --git a/classes/diskcache.php b/classes/diskcache.php
index 94f645f32..063a3847c 100644
--- a/classes/diskcache.php
+++ b/classes/diskcache.php
@@ -191,7 +191,7 @@ class DiskCache {
 	];
 
 	public function __construct($dir) {
-		$this->dir = CACHE_DIR . "/" . basename(clean($dir));
+		$this->dir = Config::get(Config::CACHE_DIR) . "/" . basename(clean($dir));
 	}
 
 	public function get_dir() {
@@ -339,7 +339,7 @@ class DiskCache {
 	}
 
 	static function expire() {
-		$dirs = array_filter(glob(CACHE_DIR . "/*"), "is_dir");
+		$dirs = array_filter(glob(Config::get(Config::CACHE_DIR) . "/*"), "is_dir");
 
 		foreach ($dirs as $cache_dir) {
 			$num_deleted = 0;
@@ -396,7 +396,7 @@ class DiskCache {
 
 			$tmppluginhost = new PluginHost();
 
-			$tmppluginhost->load(PLUGINS, PluginHost::KIND_SYSTEM);
+			$tmppluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_SYSTEM);
 			//$tmppluginhost->load_data();
 
 			if ($tmppluginhost->run_hooks_until(PluginHost::HOOK_SEND_LOCAL_FILE, true, $filename))
diff --git a/classes/feeditem/common.php b/classes/feeditem/common.php
index f387e0779..8f2b9188b 100755
--- a/classes/feeditem/common.php
+++ b/classes/feeditem/common.php
@@ -179,7 +179,7 @@ abstract class FeedItem_Common extends FeedItem {
 
 			$cat = preg_replace('/[,\'\"]/', "", $cat);
 
-			if (DB_TYPE == "mysql") {
+			if (Config::get(Config::DB_TYPE) == "mysql") {
 				$cat = preg_replace('/[\x{10000}-\x{10FFFF}]/u', "\xEF\xBF\xBD", $cat);
 			}
 
diff --git a/classes/feeds.php b/classes/feeds.php
index b59504c03..274cb22d0 100755
--- a/classes/feeds.php
+++ b/classes/feeds.php
@@ -186,7 +186,7 @@ class Feeds extends Handler_Protected {
 				$id = $line["id"];
 
 				// frontend doesn't expect pdo returning booleans as strings on mysql
-				if (DB_TYPE == "mysql") {
+				if (Config::get(Config::DB_TYPE) == "mysql") {
 					foreach (["unread", "marked", "published"] as $k) {
 						$line[$k] = $line[$k] === "1";
 					}
@@ -576,7 +576,7 @@ class Feeds extends Handler_Protected {
 
 	function search() {
 		print json_encode([
-			"show_language" => DB_TYPE == "pgsql",
+			"show_language" => Config::get(Config::DB_TYPE) == "pgsql",
 			"show_syntax_help" => count(PluginHost::getInstance()->get_hooks(PluginHost::HOOK_SEARCH)) == 0,
 			"all_languages" => Pref_Feeds::get_ts_languages(),
 			"default_language" => get_pref('DEFAULT_SEARCH_LANGUAGE')
@@ -716,21 +716,21 @@ class Feeds extends Handler_Protected {
 
 		switch ($mode) {
 			case "1day":
-				if (DB_TYPE == "pgsql") {
+				if (Config::get(Config::DB_TYPE) == "pgsql") {
 					$date_qpart = "date_entered < NOW() - INTERVAL '1 day' ";
 				} else {
 					$date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 DAY) ";
 				}
 				break;
 			case "1week":
-				if (DB_TYPE == "pgsql") {
+				if (Config::get(Config::DB_TYPE) == "pgsql") {
 					$date_qpart = "date_entered < NOW() - INTERVAL '1 week' ";
 				} else {
 					$date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 1 WEEK) ";
 				}
 				break;
 			case "2week":
-				if (DB_TYPE == "pgsql") {
+				if (Config::get(Config::DB_TYPE) == "pgsql") {
 					$date_qpart = "date_entered < NOW() - INTERVAL '2 week' ";
 				} else {
 					$date_qpart = "date_entered < DATE_SUB(NOW(), INTERVAL 2 WEEK) ";
@@ -807,7 +807,7 @@ class Feeds extends Handler_Protected {
 
 					$intl = (int) get_pref("FRESH_ARTICLE_MAX_AGE");
 
-					if (DB_TYPE == "pgsql") {
+					if (Config::get(Config::DB_TYPE) == "pgsql") {
 						$match_part = "date_entered > NOW() - INTERVAL '$intl hour' ";
 					} else {
 						$match_part = "date_entered > DATE_SUB(NOW(),
@@ -900,7 +900,7 @@ class Feeds extends Handler_Protected {
 
 			$intl = (int) get_pref("FRESH_ARTICLE_MAX_AGE", $owner_uid);
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$match_part .= " AND date_entered > NOW() - INTERVAL '$intl hour' ";
 			} else {
 				$match_part .= " AND date_entered > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
@@ -1332,7 +1332,7 @@ class Feeds extends Handler_Protected {
 				list($search_query_part, $search_words) = self::_search_to_sql($search, $search_language, $owner_uid);
 			}
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$test_sth = $pdo->prepare("select $search_query_part
 					FROM ttrss_entries, ttrss_user_entries WHERE id = ref_id limit 1");
 
@@ -1469,7 +1469,7 @@ class Feeds extends Handler_Protected {
 		} else if ($feed == -6) { // recently read
 			$query_strategy_part = "unread = false AND last_read IS NOT NULL";
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$query_strategy_part .= " AND last_read > NOW() - INTERVAL '1 DAY' ";
 			} else {
 				$query_strategy_part .= " AND last_read > DATE_SUB(NOW(), INTERVAL 1 DAY) ";
@@ -1486,7 +1486,7 @@ class Feeds extends Handler_Protected {
 
 			$intl = (int) get_pref("FRESH_ARTICLE_MAX_AGE", $owner_uid);
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$query_strategy_part .= " AND date_entered > NOW() - INTERVAL '$intl hour' ";
 			} else {
 				$query_strategy_part .= " AND date_entered > DATE_SUB(NOW(), INTERVAL $intl HOUR) ";
@@ -1605,7 +1605,7 @@ class Feeds extends Handler_Protected {
 			if ($feed == -3)
 				$first_id_query_strategy_part = "true";
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$sanity_interval_qpart = "date_entered >= NOW() - INTERVAL '1 hour' AND";
 				$yyiw_qpart = "to_char(date_entered, 'IYYY-IW') AS yyiw";
 
@@ -1705,7 +1705,7 @@ class Feeds extends Handler_Protected {
 		} else {
 			// browsing by tag
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$distinct_columns = str_replace("desc", "", strtolower($order_by));
 				$distinct_qpart = "DISTINCT ON (id, $distinct_columns)";
 			} else {
@@ -1948,10 +1948,10 @@ class Feeds extends Handler_Protected {
 		if ($row = $sth->fetch()) {
 			$owner_uid = $row["owner_uid"];
 
-			if (FORCE_ARTICLE_PURGE != 0) {
-				Debug::log("purge_feed: FORCE_ARTICLE_PURGE is set, overriding interval to " . FORCE_ARTICLE_PURGE, Debug::$LOG_VERBOSE);
+			if (Config::get(Config::FORCE_ARTICLE_PURGE) != 0) {
+				Debug::log("purge_feed: FORCE_ARTICLE_PURGE is set, overriding interval to " . Config::get(Config::FORCE_ARTICLE_PURGE), Debug::$LOG_VERBOSE);
 				$purge_unread = true;
-				$purge_interval = FORCE_ARTICLE_PURGE;
+				$purge_interval = Config::get(Config::FORCE_ARTICLE_PURGE);
 			} else {
 				$purge_unread = get_pref("PURGE_UNREAD_ARTICLES", $owner_uid, false);
 			}
@@ -1970,7 +1970,7 @@ class Feeds extends Handler_Protected {
 			else
 				$query_limit = "";
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$sth = $pdo->prepare("DELETE FROM ttrss_user_entries
 					USING ttrss_entries
 					WHERE ttrss_entries.id = ref_id AND
@@ -2153,7 +2153,7 @@ class Feeds extends Handler_Protected {
 						array_push($query_keywords, "(".SUBSTRING_FOR_DATE."(updated,1,LENGTH('$k')) $not = '$k')");
 					} else {
 
-						if (DB_TYPE == "pgsql") {
+						if (Config::get(Config::DB_TYPE) == "pgsql") {
 							$k = mb_strtolower($k);
 							array_push($search_query_leftover, $not ? "!$k" : $k);
 						} else {
@@ -2168,7 +2168,7 @@ class Feeds extends Handler_Protected {
 
 		if (count($search_query_leftover) > 0) {
 
-			if (DB_TYPE == "pgsql") {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 
 				// if there's no joiners consider this a "simple" search and
 				// concatenate everything with &, otherwise don't try to mess with tsquery syntax
diff --git a/classes/handler/public.php b/classes/handler/public.php
index 3910cf7c1..79dff37b5 100755
--- a/classes/handler/public.php
+++ b/classes/handler/public.php
@@ -43,7 +43,7 @@ class Handler_Public extends Handler {
 			$user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 
 			$tmppluginhost = new PluginHost();
-			$tmppluginhost->load(PLUGINS, PluginHost::KIND_ALL);
+			$tmppluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_ALL);
 			$tmppluginhost->load((string)$user_plugins, PluginHost::KIND_USER, $owner_uid);
 			//$tmppluginhost->load_data();
 
@@ -309,7 +309,7 @@ class Handler_Public extends Handler {
 		$format = clean($_REQUEST['format'] ?? "atom");
 		$orig_guid = clean($_REQUEST["orig_guid"] ?? false);
 
-		if (SINGLE_USER_MODE) {
+		if (Config::get(Config::SINGLE_USER_MODE)) {
 			UserHelper::authenticate("admin", null);
 		}
 
@@ -347,7 +347,7 @@ class Handler_Public extends Handler {
 	}
 
 	function login() {
-		if (!SINGLE_USER_MODE) {
+		if (!Config::get(Config::SINGLE_USER_MODE)) {
 
 			$login = clean($_POST["login"]);
 			$password = clean($_POST["password"]);
@@ -355,7 +355,7 @@ class Handler_Public extends Handler {
 			$safe_mode = checkbox_to_sql_bool(clean($_POST["safe_mode"] ?? false));
 
 			if ($remember_me) {
-				@session_set_cookie_params(SESSION_COOKIE_LIFETIME);
+				@session_set_cookie_params(Config::get(Config::SESSION_COOKIE_LIFETIME));
 			} else {
 				@session_set_cookie_params(0);
 			}
@@ -398,7 +398,7 @@ class Handler_Public extends Handler {
 
 			$return = clean($_REQUEST['return']);
 
-			if ($_REQUEST['return'] && mb_strpos($return, SELF_URL_PATH) === 0) {
+			if ($_REQUEST['return'] && mb_strpos($return, Config::get(Config::SELF_URL_PATH)) === 0) {
 				header("Location: " . clean($_REQUEST['return']));
 			} else {
 				header("Location: " . get_self_url_prefix());
@@ -559,7 +559,7 @@ class Handler_Public extends Handler {
 
 						$tpl->setVariable('LOGIN', $login);
 						$tpl->setVariable('RESETPASS_LINK', $resetpass_link);
-						$tpl->setVariable('TTRSS_HOST', SELF_URL_PATH);
+						$tpl->setVariable('TTRSS_HOST', Config::get(Config::SELF_URL_PATH));
 
 						$tpl->addBlock('message');
 
@@ -613,7 +613,7 @@ class Handler_Public extends Handler {
 	function dbupdate() {
 		startup_gettext();
 
-		if (!SINGLE_USER_MODE && $_SESSION["access_level"] < 10) {
+		if (!Config::get(Config::SINGLE_USER_MODE) && $_SESSION["access_level"] < 10) {
 			$_SESSION["login_error_msg"] = __("Your access level is insufficient to run this script.");
 			$this->_render_login_form();
 			exit;
@@ -660,7 +660,7 @@ class Handler_Public extends Handler {
 
 			<?php
 				@$op = clean($_REQUEST["subop"]);
-				$updater = new DbUpdater(Db::pdo(), DB_TYPE, SCHEMA_VERSION);
+				$updater = new DbUpdater(Db::pdo(), Config::get(Config::DB_TYPE), SCHEMA_VERSION);
 
 				if ($op == "performupdate") {
 					if ($updater->is_update_required()) {
@@ -709,7 +709,7 @@ class Handler_Public extends Handler {
 						print "<h2>".T_sprintf("Tiny Tiny RSS database needs update to the latest version (%d to %d).",
 							$updater->get_schema_version(), SCHEMA_VERSION)."</h2>";
 
-						if (DB_TYPE == "mysql") {
+						if (Config::get(Config::DB_TYPE) == "mysql") {
 							print_error("<strong>READ THIS:</strong> Due to MySQL limitations, your database is not completely protected while updating. ".
 								"Errors may put it in an inconsistent state requiring manual rollback. <strong>BACKUP YOUR DATABASE BEFORE CONTINUING.</strong>");
 						} else {
diff --git a/classes/opml.php b/classes/opml.php
index 04d287125..cbc1269e3 100644
--- a/classes/opml.php
+++ b/classes/opml.php
@@ -594,7 +594,7 @@ class OPML extends Handler_Protected {
 		}
 
 		if (is_uploaded_file($_FILES['opml_file']['tmp_name'])) {
-			$tmp_file = (string)tempnam(CACHE_DIR . '/upload', 'opml');
+			$tmp_file = (string)tempnam(Config::get(Config::CACHE_DIR) . '/upload', 'opml');
 
 			$result = move_uploaded_file($_FILES['opml_file']['tmp_name'],
 				$tmp_file);
diff --git a/classes/pref/feeds.php b/classes/pref/feeds.php
index e583a5f51..229effeb3 100755
--- a/classes/pref/feeds.php
+++ b/classes/pref/feeds.php
@@ -9,7 +9,7 @@ class Pref_Feeds extends Handler_Protected {
 	public static function get_ts_languages() {
 		$rv = [];
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$dbh = Db::pdo();
 
 			$res = $dbh->query("SELECT cfgname FROM pg_ts_config");
@@ -453,7 +453,7 @@ class Pref_Feeds extends Handler_Protected {
 		header("Content-type: text/html");
 
 		if (is_uploaded_file($_FILES['icon_file']['tmp_name'])) {
-			$tmp_file = tempnam(CACHE_DIR . '/upload', 'icon');
+			$tmp_file = tempnam(Config::get(Config::CACHE_DIR) . '/upload', 'icon');
 
 			if (!$tmp_file)
 				return;
@@ -529,7 +529,7 @@ class Pref_Feeds extends Handler_Protected {
 			$local_update_intervals = $update_intervals;
 			$local_update_intervals[0] .= sprintf(" (%s)", $update_intervals[get_pref("DEFAULT_UPDATE_INTERVAL")]);
 
-			if (FORCE_ARTICLE_PURGE == 0) {
+			if (Config::get(Config::FORCE_ARTICLE_PURGE) == 0) {
 				$local_purge_intervals = $purge_intervals;
 				$default_purge_interval = get_pref("PURGE_OLD_DAYS");
 
@@ -539,7 +539,7 @@ class Pref_Feeds extends Handler_Protected {
 				$local_purge_intervals[0] .= " " . sprintf("(%s)", __("Disabled"));
 
 			} else {
-				$purge_interval = FORCE_ARTICLE_PURGE;
+				$purge_interval = Config::get(Config::FORCE_ARTICLE_PURGE);
 				$local_purge_intervals = [ T_nsprintf('%d day', '%d days', $purge_interval, $purge_interval) ];
 			}
 
@@ -550,13 +550,13 @@ class Pref_Feeds extends Handler_Protected {
 					"select" => \Controls\select_feeds_cats("cat_id", $row["cat_id"]),
 				],
 				"plugin_data" => $plugin_data,
-				"force_purge" => (int)FORCE_ARTICLE_PURGE,
+				"force_purge" => (int)Config::get(Config::FORCE_ARTICLE_PURGE),
 				"intervals" => [
 					"update" => $local_update_intervals,
 					"purge" => $local_purge_intervals,
 				],
 				"lang" => [
-					"enabled" => DB_TYPE == "pgsql",
+					"enabled" => Config::get(Config::DB_TYPE) == "pgsql",
 					"default" => get_pref('DEFAULT_SEARCH_LANGUAGE'),
 					"all" => $this::get_ts_languages(),
 					]
@@ -614,7 +614,7 @@ class Pref_Feeds extends Handler_Protected {
 					</fieldset>
 				<?php } ?>
 
-				<?php	if (DB_TYPE == "pgsql") { ?>
+				<?php	if (Config::get(Config::DB_TYPE) == "pgsql") { ?>
 					<fieldset>
 						<label><?= __('Language:') ?></label>
 						<?= \Controls\select_tag("feed_language", "", $this::get_ts_languages(), ["disabled"=> 1]) ?>
@@ -632,7 +632,7 @@ class Pref_Feeds extends Handler_Protected {
 						<?= $this->_batch_toggle_checkbox("update_interval") ?>
 					</fieldset>
 
-					<?php if (FORCE_ARTICLE_PURGE == 0) { ?>
+					<?php if (Config::get(Config::FORCE_ARTICLE_PURGE) == 0) { ?>
 						<fieldset>
 							<label><?= __('Article purging:') ?></label>
 							<?= \Controls\select_hash("purge_interval", "", $local_purge_intervals, ["disabled" => 1]) ?>
@@ -1147,7 +1147,7 @@ class Pref_Feeds extends Handler_Protected {
 
 	function inactiveFeeds() {
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$interval_qpart = "NOW() - INTERVAL '3 months'";
 		} else {
 			$interval_qpart = "DATE_SUB(NOW(), INTERVAL 3 MONTH)";
diff --git a/classes/pref/prefs.php b/classes/pref/prefs.php
index adb249dac..1ca5b28be 100644
--- a/classes/pref/prefs.php
+++ b/classes/pref/prefs.php
@@ -236,7 +236,7 @@ class Pref_Prefs extends Handler_Protected {
 
 				$tpl->setVariable('LOGIN', $row["login"]);
 				$tpl->setVariable('NEWMAIL', $email);
-				$tpl->setVariable('TTRSS_HOST', SELF_URL_PATH);
+				$tpl->setVariable('TTRSS_HOST', Config::get(Config::SELF_URL_PATH));
 
 				$tpl->addBlock('message');
 
@@ -625,7 +625,7 @@ class Pref_Prefs extends Handler_Protected {
 					continue;
 				}
 
-				if ($pref_name == "DEFAULT_SEARCH_LANGUAGE" && DB_TYPE != "pgsql") {
+				if ($pref_name == "DEFAULT_SEARCH_LANGUAGE" && Config::get(Config::DB_TYPE) != "pgsql") {
 					continue;
 				}
 
@@ -705,7 +705,7 @@ class Pref_Prefs extends Handler_Protected {
 
 						array_push($listed_boolean_prefs, $pref_name);
 
-						if ($pref_name == "PURGE_UNREAD_ARTICLES" && FORCE_ARTICLE_PURGE != 0) {
+						if ($pref_name == "PURGE_UNREAD_ARTICLES" && Config::get(Config::FORCE_ARTICLE_PURGE) != 0) {
 							$is_disabled = true;
 							$is_checked = true;
 						} else {
@@ -719,9 +719,9 @@ class Pref_Prefs extends Handler_Protected {
 					} else if (in_array($pref_name, ['FRESH_ARTICLE_MAX_AGE',
 							'PURGE_OLD_DAYS', 'LONG_DATE_FORMAT', 'SHORT_DATE_FORMAT'])) {
 
-						if ($pref_name == "PURGE_OLD_DAYS" && FORCE_ARTICLE_PURGE != 0) {
+						if ($pref_name == "PURGE_OLD_DAYS" && Config::get(Config::FORCE_ARTICLE_PURGE) != 0) {
 							$attributes = ["disabled" => true, "required" => true];
-							$value = FORCE_ARTICLE_PURGE;
+							$value = Config::get(Config::FORCE_ARTICLE_PURGE);
 						} else {
 							$attributes = ["required" => true];
 						}
@@ -829,7 +829,7 @@ class Pref_Prefs extends Handler_Protected {
 	private function index_plugins_system() {
 		print_notice("System plugins are enabled in <strong>config.php</strong> for all users.");
 
-		$system_enabled = array_map("trim", explode(",", (string)PLUGINS));
+		$system_enabled = array_map("trim", explode(",", (string)Config::get(Config::PLUGINS)));
 
 		$tmppluginhost = new PluginHost();
 		$tmppluginhost->load_all($tmppluginhost::KIND_ALL, $_SESSION["uid"], true);
@@ -862,7 +862,7 @@ class Pref_Prefs extends Handler_Protected {
 	}
 
 	private function index_plugins_user() {
-		$system_enabled = array_map("trim", explode(",", (string)PLUGINS));
+		$system_enabled = array_map("trim", explode(",", (string)Config::get(Config::PLUGINS)));
 		$user_enabled = array_map("trim", explode(",", get_pref("_ENABLED_PLUGINS")));
 
 		$tmppluginhost = new PluginHost();
@@ -1135,7 +1135,7 @@ class Pref_Prefs extends Handler_Protected {
 				$tpl->readTemplateFromFile("otp_disabled_template.txt");
 
 				$tpl->setVariable('LOGIN', $row["login"]);
-				$tpl->setVariable('TTRSS_HOST', SELF_URL_PATH);
+				$tpl->setVariable('TTRSS_HOST', Config::get(Config::SELF_URL_PATH));
 
 				$tpl->addBlock('message');
 
diff --git a/classes/rpc.php b/classes/rpc.php
index 95fd0f5ae..bf24132b0 100755
--- a/classes/rpc.php
+++ b/classes/rpc.php
@@ -174,7 +174,7 @@ class RPC extends Handler_Protected {
 	static function updaterandomfeed_real() {
 
 		// Test if the feed need a update (update interval exceded).
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$update_limit_qpart = "AND ((
 					ttrss_feeds.update_interval = 0
 					AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
@@ -199,7 +199,7 @@ class RPC extends Handler_Protected {
 		}
 
 		// Test if feed is currently being updated by another process.
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '5 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))";
@@ -361,7 +361,7 @@ class RPC extends Handler_Protected {
 		$params["safe_mode"] = !empty($_SESSION["safe_mode"]);
 		$params["check_for_updates"] = CHECK_FOR_UPDATES;
 		$params["icons_url"] = ICONS_URL;
-		$params["cookie_lifetime"] = SESSION_COOKIE_LIFETIME;
+		$params["cookie_lifetime"] = Config::get(Config::SESSION_COOKIE_LIFETIME);
 		$params["default_view_mode"] = get_pref("_DEFAULT_VIEW_MODE");
 		$params["default_view_limit"] = (int) get_pref("_DEFAULT_VIEW_LIMIT");
 		$params["default_view_order_by"] = get_pref("_DEFAULT_VIEW_ORDER_BY");
@@ -433,7 +433,7 @@ class RPC extends Handler_Protected {
 		$data["labels"] = Labels::get_all($_SESSION["uid"]);
 
 		if (LOG_DESTINATION == 'sql' && $_SESSION['access_level'] >= 10) {
-			if (DB_TYPE == 'pgsql') {
+			if (Config::get(Config::DB_TYPE) == 'pgsql') {
 				$log_interval = "created_at > NOW() - interval '1 hour'";
 			} else {
 				$log_interval = "created_at > DATE_SUB(NOW(), INTERVAL 1 HOUR)";
@@ -452,13 +452,13 @@ class RPC extends Handler_Protected {
 			}
 		}
 
-		if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
+		if (file_exists(Config::get(Config::LOCK_DIRECTORY) . "/update_daemon.lock")) {
 
 			$data['daemon_is_running'] = (int) file_is_locked("update_daemon.lock");
 
 			if (time() - ($_SESSION["daemon_stamp_check"] ?? 0) > 30) {
 
-				$stamp = (int) @file_get_contents(LOCK_DIRECTORY . "/update_daemon.stamp");
+				$stamp = (int) @file_get_contents(Config::get(Config::LOCK_DIRECTORY) . "/update_daemon.stamp");
 
 				if ($stamp) {
 					$stamp_delta = time() - $stamp;
diff --git a/classes/rssutils.php b/classes/rssutils.php
index 30d08328f..c951003f0 100755
--- a/classes/rssutils.php
+++ b/classes/rssutils.php
@@ -61,8 +61,8 @@ class RSSUtils {
 
 		$pdo = Db::pdo();
 
-		if (!SINGLE_USER_MODE && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
-			if (DB_TYPE == "pgsql") {
+		if (!Config::get(Config::SINGLE_USER_MODE) && DAEMON_UPDATE_LOGIN_LIMIT > 0) {
+			if (Config::get(Config::DB_TYPE) == "pgsql") {
 				$login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
 			} else {
 				$login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
@@ -71,7 +71,7 @@ class RSSUtils {
 			$login_thresh_qpart = "";
 		}
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$update_limit_qpart = "AND ((
 					ttrss_feeds.update_interval = 0
 					AND ttrss_user_prefs.value != '-1'
@@ -96,7 +96,7 @@ class RSSUtils {
 		}
 
 		// Test if feed is currently being updated by another process.
-		if (DB_TYPE == "pgsql") {
+		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))";
@@ -106,7 +106,7 @@ class RSSUtils {
 
 		// Update the least recently updated feeds first
 		$query_order = "ORDER BY last_updated";
-		if (DB_TYPE == "pgsql") $query_order .= " NULLS FIRST";
+		if (Config::get(Config::DB_TYPE) == "pgsql") $query_order .= " NULLS FIRST";
 
 		$query = "SELECT DISTINCT ttrss_feeds.feed_url, ttrss_feeds.last_updated
 			FROM
@@ -182,7 +182,7 @@ class RSSUtils {
 				if (self::function_enabled('passthru')) {
 					$exit_code = 0;
 
-					passthru(PHP_EXECUTABLE . " update.php --update-feed " . $tline["id"] . " --pidlock feed-" . $tline["id"] . " $quiet $log $log_level", $exit_code);
+					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));
 
@@ -275,7 +275,7 @@ class RSSUtils {
 			$pluginhost = new PluginHost();
 			$user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 
-			$pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
+			$pluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_ALL);
 			$pluginhost->load((string)$user_plugins, PluginHost::KIND_USER, $owner_uid);
 			//$pluginhost->load_data();
 
@@ -395,12 +395,12 @@ class RSSUtils {
 
 		$date_feed_processed = date('Y-m-d H:i');
 
-		$cache_filename = CACHE_DIR . "/feeds/" . sha1($fetch_url) . ".xml";
+		$cache_filename = Config::get(Config::CACHE_DIR) . "/feeds/" . sha1($fetch_url) . ".xml";
 
 		$pluginhost = new PluginHost();
 		$user_plugins = get_pref("_ENABLED_PLUGINS", $owner_uid);
 
-		$pluginhost->load(PLUGINS, PluginHost::KIND_ALL);
+		$pluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_ALL);
 		$pluginhost->load((string)$user_plugins, PluginHost::KIND_USER, $owner_uid);
 		//$pluginhost->load_data();
 
@@ -488,7 +488,7 @@ class RSSUtils {
 			}
 
 			// cache vanilla feed data for re-use
-			if ($feed_data && !$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/feeds")) {
+			if ($feed_data && !$auth_pass && !$auth_login && is_writable(Config::get(Config::CACHE_DIR) . "/feeds")) {
 				$new_rss_hash = sha1($feed_data);
 
 				if ($new_rss_hash != $rss_hash) {
@@ -561,7 +561,7 @@ class RSSUtils {
 			Debug::log("language: $feed_language", Debug::$LOG_VERBOSE);
 			Debug::log("processing feed data...", Debug::$LOG_VERBOSE);
 
-			if (DB_TYPE == "pgsql") {
+			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)";
@@ -755,7 +755,7 @@ class RSSUtils {
 							$e->type, $e->length, $e->title, $e->width, $e->height);
 
 						// Yet another episode of "mysql utf8_general_ci is gimped"
-						if (DB_TYPE == "mysql" && MYSQL_CHARSET != "UTF8MB4") {
+						if (Config::get(Config::DB_TYPE) == "mysql" && 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]);
@@ -833,7 +833,7 @@ class RSSUtils {
 				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 (DB_TYPE == "mysql" && MYSQL_CHARSET != "UTF8MB4") {
+				if (Config::get(Config::DB_TYPE) == "mysql" && 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])) {
@@ -1079,7 +1079,7 @@ class RSSUtils {
 
 					Debug::log("resulting RID: $entry_ref_id, IID: $entry_int_id", Debug::$LOG_VERBOSE);
 
-					if (DB_TYPE == "pgsql")
+					if (Config::get(Config::DB_TYPE) == "pgsql")
 						$tsvector_qpart = "tsvector_combined = to_tsvector(:ts_lang, :ts_content),";
 					else
 						$tsvector_qpart = "";
@@ -1107,7 +1107,7 @@ class RSSUtils {
 						":lang" => $entry_language,
 						":id" => $ref_id];
 
-					if (DB_TYPE == "pgsql") {
+					if (Config::get(Config::DB_TYPE) == "pgsql") {
 						$params[":ts_lang"] = $feed_language;
 						$params[":ts_content"] = mb_substr(strip_tags($entry_title . " " . $entry_content), 0, 900000);
 					}
@@ -1375,7 +1375,7 @@ class RSSUtils {
 
 		$pdo = Db::pdo();
 
-		if (DB_TYPE == "pgsql") {
+		if (Config::get(Config::DB_TYPE) == "pgsql") {
 			$pdo->query("DELETE FROM ttrss_error_log
 				WHERE created_at < NOW() - INTERVAL '7 days'");
 		} else {
@@ -1396,8 +1396,8 @@ class RSSUtils {
 
 		$num_deleted = 0;
 
-		if (is_writable(LOCK_DIRECTORY)) {
-			$files = glob(LOCK_DIRECTORY . "/*.lock");
+		if (is_writable(Config::get(Config::LOCK_DIRECTORY))) {
+			$files = glob(Config::get(Config::LOCK_DIRECTORY) . "/*.lock");
 
 			if ($files) {
 				foreach ($files as $file) {
@@ -1589,9 +1589,9 @@ class RSSUtils {
 
 			$days = DAEMON_UNSUCCESSFUL_DAYS_LIMIT;
 
-			if (DB_TYPE == "pgsql") {
+			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 (DB_TYPE == "mysql") */ {
+			} 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)";
 			}
 
diff --git a/classes/userhelper.php b/classes/userhelper.php
index 7fe1e5557..82a2fe05f 100644
--- a/classes/userhelper.php
+++ b/classes/userhelper.php
@@ -2,7 +2,7 @@
 class UserHelper {
 
 	static function authenticate(string $login = null, string $password = null, bool $check_only = false, string $service = null) {
-		if (!SINGLE_USER_MODE) {
+		if (!Config::get(Config::SINGLE_USER_MODE)) {
 			$user_id = false;
 			$auth_module = false;
 
@@ -88,7 +88,7 @@ class UserHelper {
 	static function login_sequence() {
 		$pdo = Db::pdo();
 
-		if (SINGLE_USER_MODE) {
+		if (Config::get(Config::SINGLE_USER_MODE)) {
 			@session_start();
 			self::authenticate("admin", null);
 			startup_gettext();
@@ -98,7 +98,7 @@ class UserHelper {
 
 			if (empty($_SESSION["uid"])) {
 
-				if (AUTH_AUTO_LOGIN && self::authenticate(null, null)) {
+				if (Config::get(Config::AUTH_AUTO_LOGIN) && self::authenticate(null, null)) {
 					$_SESSION["ref_schema_version"] = get_schema_version(true);
 				} else {
 					 self::authenticate(null, null, true);