Merge with master

1 files changed, 888 insertions, 0 deletions

diff --git a/classes/db/api.php b/classes/db/api.php
new file mode 100644
index 000000000..9be04cff9
--- /dev/null
+++ b/classes/db/api.php
@@ -0,0 +1,888 @@
+<?php
+
+class API extends Handler {
+
+	const API_LEVEL  = 13;
+
+	const STATUS_OK  = 0;
+	const STATUS_ERR = 1;
+
+	private $seq;
+
+	function before($method) {
+		if (parent::before($method)) {
+			header("Content-Type: text/json");
+
+			if (!$_SESSION["uid"] && $method != "login" && $method != "isloggedin") {
+				$this->wrap(self::STATUS_ERR, array("error" => 'NOT_LOGGED_IN'));
+				return false;
+			}
+
+			if ($_SESSION["uid"] && $method != "logout" && !get_pref('ENABLE_API_ACCESS')) {
+				$this->wrap(self::STATUS_ERR, array("error" => 'API_DISABLED'));
+				return false;
+			}
+
+			$this->seq = (int) $_REQUEST['seq'];
+
+			return true;
+		}
+		return false;
+	}
+
+	function wrap($status, $reply) {
+		print json_encode(array("seq" => $this->seq,
+			"status" => $status,
+			"content" => $reply));
+	}
+
+	function getVersion() {
+		$rv = array("version" => VERSION);
+		$this->wrap(self::STATUS_OK, $rv);
+	}
+
+	function getApiLevel() {
+		$rv = array("level" => self::API_LEVEL);
+		$this->wrap(self::STATUS_OK, $rv);
+	}
+
+	function login() {
+		@session_destroy();
+		@session_start();
+
+		$login = $this->dbh->escape_string($_REQUEST["user"]);
+		$password = $_REQUEST["password"];
+		$password_base64 = base64_decode($_REQUEST["password"]);
+
+		if (SINGLE_USER_MODE) $login = "admin";
+
+		$result = $this->dbh->query("SELECT id FROM ttrss_users WHERE login = '$login'");
+
+		if ($this->dbh->num_rows($result) != 0) {
+			$uid = $this->dbh->fetch_result($result, 0, "id");
+		} else {
+			$uid = 0;
+		}
+
+		if (!$uid) {
+			$this->wrap(self::STATUS_ERR, array("error" => "LOGIN_ERROR"));
+			return;
+		}
+
+		if (get_pref("ENABLE_API_ACCESS", $uid)) {
+			if (authenticate_user($login, $password)) {               // try login with normal password
+				$this->wrap(self::STATUS_OK, array("session_id" => session_id(),
+					"api_level" => self::API_LEVEL));
+			} else if (authenticate_user($login, $password_base64)) { // else try with base64_decoded password
+				$this->wrap(self::STATUS_OK,	array("session_id" => session_id(),
+					"api_level" => self::API_LEVEL));
+			} else {                                                         // else we are not logged in
+				user_error("Failed login attempt for $login from {$_SERVER['REMOTE_ADDR']}", E_USER_WARNING);
+				$this->wrap(self::STATUS_ERR, array("error" => "LOGIN_ERROR"));
+			}
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => "API_DISABLED"));
+		}
+
+	}
+
+	function logout() {
+		logout_user();
+		$this->wrap(self::STATUS_OK, array("status" => "OK"));
+	}
+
+	function isLoggedIn() {
+		$this->wrap(self::STATUS_OK, array("status" => $_SESSION["uid"] != ''));
+	}
+
+	function getUnread() {
+		$feed_id = $this->dbh->escape_string($_REQUEST["feed_id"]);
+		$is_cat = $this->dbh->escape_string($_REQUEST["is_cat"]);
+
+		if ($feed_id) {
+			$this->wrap(self::STATUS_OK, array("unread" => getFeedUnread($feed_id, $is_cat)));
+		} else {
+			$this->wrap(self::STATUS_OK, array("unread" => getGlobalUnread()));
+		}
+	}
+
+	/* Method added for ttrss-reader for Android */
+	function getCounters() {
+		$this->wrap(self::STATUS_OK, getAllCounters());
+	}
+
+	function getFeeds() {
+		$cat_id = $this->dbh->escape_string($_REQUEST["cat_id"]);
+		$unread_only = sql_bool_to_bool($_REQUEST["unread_only"]);
+		$limit = (int) $this->dbh->escape_string($_REQUEST["limit"]);
+		$offset = (int) $this->dbh->escape_string($_REQUEST["offset"]);
+		$include_nested = sql_bool_to_bool($_REQUEST["include_nested"]);
+
+		$feeds = $this->api_get_feeds($cat_id, $unread_only, $limit, $offset, $include_nested);
+
+		$this->wrap(self::STATUS_OK, $feeds);
+	}
+
+	function getCategories() {
+		$unread_only = sql_bool_to_bool($_REQUEST["unread_only"]);
+		$enable_nested = sql_bool_to_bool($_REQUEST["enable_nested"]);
+		$include_empty = sql_bool_to_bool($_REQUEST['include_empty']);
+
+		// TODO do not return empty categories, return Uncategorized and standard virtual cats
+
+		if ($enable_nested)
+			$nested_qpart = "parent_cat IS NULL";
+		else
+			$nested_qpart = "true";
+
+		$result = $this->dbh->query("SELECT
+				id, title, order_id, (SELECT COUNT(id) FROM
+				ttrss_feeds WHERE
+				ttrss_feed_categories.id IS NOT NULL AND cat_id = ttrss_feed_categories.id) AS num_feeds,
+			(SELECT COUNT(id) FROM
+				ttrss_feed_categories AS c2 WHERE
+				c2.parent_cat = ttrss_feed_categories.id) AS num_cats
+			FROM ttrss_feed_categories
+			WHERE $nested_qpart AND owner_uid = " .
+			$_SESSION["uid"]);
+
+		$cats = array();
+
+		while ($line = $this->dbh->fetch_assoc($result)) {
+			if ($include_empty || $line["num_feeds"] > 0 || $line["num_cats"] > 0) {
+				$unread = getFeedUnread($line["id"], true);
+
+				if ($enable_nested)
+					$unread += getCategoryChildrenUnread($line["id"]);
+
+				if ($unread || !$unread_only) {
+					array_push($cats, array("id" => $line["id"],
+						"title" => $line["title"],
+						"unread" => $unread,
+						"order_id" => (int) $line["order_id"],
+					));
+				}
+			}
+		}
+
+		foreach (array(-2,-1,0) as $cat_id) {
+			if ($include_empty || !$this->isCategoryEmpty($cat_id)) {
+				$unread = getFeedUnread($cat_id, true);
+
+				if ($unread || !$unread_only) {
+					array_push($cats, array("id" => $cat_id,
+						"title" => getCategoryTitle($cat_id),
+						"unread" => $unread));
+				}
+			}
+		}
+
+		$this->wrap(self::STATUS_OK, $cats);
+	}
+
+	function getHeadlines() {
+		$feed_id = $this->dbh->escape_string($_REQUEST["feed_id"]);
+		if ($feed_id != "") {
+
+			if (is_numeric($feed_id)) $feed_id = (int) $feed_id;
+
+			$limit = (int)$this->dbh->escape_string($_REQUEST["limit"]);
+
+			if (!$limit || $limit >= 200) $limit = 200;
+
+			$offset = (int)$this->dbh->escape_string($_REQUEST["skip"]);
+			$filter = $this->dbh->escape_string($_REQUEST["filter"]);
+			$is_cat = sql_bool_to_bool($_REQUEST["is_cat"]);
+			$show_excerpt = sql_bool_to_bool($_REQUEST["show_excerpt"]);
+			$show_content = sql_bool_to_bool($_REQUEST["show_content"]);
+			/* all_articles, unread, adaptive, marked, updated */
+			$view_mode = $this->dbh->escape_string($_REQUEST["view_mode"]);
+			$include_attachments = sql_bool_to_bool($_REQUEST["include_attachments"]);
+			$since_id = (int)$this->dbh->escape_string($_REQUEST["since_id"]);
+			$include_nested = sql_bool_to_bool($_REQUEST["include_nested"]);
+			$sanitize_content = !isset($_REQUEST["sanitize"]) ||
+				sql_bool_to_bool($_REQUEST["sanitize"]);
+			$force_update = sql_bool_to_bool($_REQUEST["force_update"]);
+			$has_sandbox = sql_bool_to_bool($_REQUEST["has_sandbox"]);
+			$excerpt_length = (int)$this->dbh->escape_string($_REQUEST["excerpt_length"]);
+			$check_first_id = (int)$this->dbh->escape_string($_REQUEST["check_first_id"]);
+			$include_header = sql_bool_to_bool($_REQUEST["include_header"]);
+
+			$_SESSION['hasSandbox'] = $has_sandbox;
+
+			$skip_first_id_check = false;
+
+			$override_order = false;
+			switch ($_REQUEST["order_by"]) {
+				case "title":
+					$override_order = "ttrss_entries.title";
+					break;
+				case "date_reverse":
+					$override_order = "score DESC, date_entered, updated";
+					$skip_first_id_check = true;
+					break;
+				case "feed_dates":
+					$override_order = "updated DESC";
+					break;
+			}
+
+			/* do not rely on params below */
+
+			$search = $this->dbh->escape_string($_REQUEST["search"]);
+
+			list($headlines, $headlines_header) = $this->api_get_headlines($feed_id, $limit, $offset,
+				$filter, $is_cat, $show_excerpt, $show_content, $view_mode, $override_order,
+				$include_attachments, $since_id, $search,
+				$include_nested, $sanitize_content, $force_update, $excerpt_length, $check_first_id, $skip_first_id_check);
+
+			if ($include_header) {
+				$this->wrap(self::STATUS_OK, array($headlines_header, $headlines));
+			} else {
+				$this->wrap(self::STATUS_OK, $headlines);
+			}
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => 'INCORRECT_USAGE'));
+		}
+	}
+
+	function updateArticle() {
+		$article_ids = array_filter(explode(",", $this->dbh->escape_string($_REQUEST["article_ids"])), is_numeric);
+		$mode = (int) $this->dbh->escape_string($_REQUEST["mode"]);
+		$data = $this->dbh->escape_string($_REQUEST["data"]);
+		$field_raw = (int)$this->dbh->escape_string($_REQUEST["field"]);
+
+		$field = "";
+		$set_to = "";
+
+		switch ($field_raw) {
+			case 0:
+				$field = "marked";
+				$additional_fields = ",last_marked = NOW()";
+				break;
+			case 1:
+				$field = "published";
+				$additional_fields = ",last_published = NOW()";
+				break;
+			case 2:
+				$field = "unread";
+				$additional_fields = ",last_read = NOW()";
+				break;
+			case 3:
+				$field = "note";
+		};
+
+		switch ($mode) {
+			case 1:
+				$set_to = "true";
+				break;
+			case 0:
+				$set_to = "false";
+				break;
+			case 2:
+				$set_to = "NOT $field";
+				break;
+		}
+
+		if ($field == "note") $set_to = "'$data'";
+
+		if ($field && $set_to && count($article_ids) > 0) {
+
+			$article_ids = join(", ", $article_ids);
+
+			$result = $this->dbh->query("UPDATE ttrss_user_entries SET $field = $set_to $additional_fields WHERE ref_id IN ($article_ids) AND owner_uid = " . $_SESSION["uid"]);
+
+			$num_updated = $this->dbh->affected_rows($result);
+
+			if ($num_updated > 0 && $field == "unread") {
+				$result = $this->dbh->query("SELECT DISTINCT feed_id FROM ttrss_user_entries
+					WHERE ref_id IN ($article_ids)");
+
+				while ($line = $this->dbh->fetch_assoc($result)) {
+					ccache_update($line["feed_id"], $_SESSION["uid"]);
+				}
+			}
+
+			if ($num_updated > 0 && $field == "published") {
+				if (PUBSUBHUBBUB_HUB) {
+					$rss_link = get_self_url_prefix() .
+						"/public.php?op=rss&id=-2&key=" .
+						get_feed_access_key(-2, false);
+
+					$p = new Publisher(PUBSUBHUBBUB_HUB);
+					$pubsub_result = $p->publish_update($rss_link);
+				}
+			}
+
+			$this->wrap(self::STATUS_OK, array("status" => "OK",
+				"updated" => $num_updated));
+
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => 'INCORRECT_USAGE'));
+		}
+
+	}
+
+	function getArticle() {
+
+		$article_id = join(",", array_filter(explode(",", $this->dbh->escape_string($_REQUEST["article_id"])), is_numeric));
+		$sanitize_content = !isset($_REQUEST["sanitize"]) ||
+			sql_bool_to_bool($_REQUEST["sanitize"]);
+
+		if ($article_id) {
+
+			$query = "SELECT id,title,link,content,feed_id,comments,int_id,
+				marked,unread,published,score,note,lang,
+				".SUBSTRING_FOR_DATE."(updated,1,16) as updated,
+				author,(SELECT title FROM ttrss_feeds WHERE id = feed_id) AS feed_title,
+				(SELECT site_url FROM ttrss_feeds WHERE id = feed_id) AS site_url,
+				(SELECT hide_images FROM ttrss_feeds WHERE id = feed_id) AS hide_images
+				FROM ttrss_entries,ttrss_user_entries
+				WHERE	id IN ($article_id) AND ref_id = id AND owner_uid = " .
+					$_SESSION["uid"] ;
+
+			$result = $this->dbh->query($query);
+
+			$articles = array();
+
+			if ($this->dbh->num_rows($result) != 0) {
+
+				while ($line = $this->dbh->fetch_assoc($result)) {
+
+					$attachments = get_article_enclosures($line['id']);
+
+					$article = array(
+						"id" => $line["id"],
+						"title" => $line["title"],
+						"link" => $line["link"],
+						"labels" => get_article_labels($line['id']),
+						"unread" => sql_bool_to_bool($line["unread"]),
+						"marked" => sql_bool_to_bool($line["marked"]),
+						"published" => sql_bool_to_bool($line["published"]),
+						"comments" => $line["comments"],
+						"author" => $line["author"],
+						"updated" => (int) strtotime($line["updated"]),
+						"feed_id" => $line["feed_id"],
+						"attachments" => $attachments,
+						"score" => (int)$line["score"],
+						"feed_title" => $line["feed_title"],
+						"note" => $line["note"],
+						"lang" => $line["lang"]
+					);
+
+					if ($sanitize_content) {
+						$article["content"] = sanitize(
+							$line["content"],
+							sql_bool_to_bool($line['hide_images']),
+							false, $line["site_url"], false, $line["id"]);
+					} else {
+						$article["content"] = $line["content"];
+					}
+
+					foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_RENDER_ARTICLE_API) as $p) {
+						$article = $p->hook_render_article_api(array("article" => $article));
+					}
+
+
+					array_push($articles, $article);
+
+				}
+			}
+
+			$this->wrap(self::STATUS_OK, $articles);
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => 'INCORRECT_USAGE'));
+		}
+	}
+
+	function getConfig() {
+		$config = array(
+			"icons_dir" => ICONS_DIR,
+			"icons_url" => ICONS_URL);
+
+		$config["daemon_is_running"] = file_is_locked("update_daemon.lock");
+
+		$result = $this->dbh->query("SELECT COUNT(*) AS cf FROM
+			ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
+
+		$num_feeds = $this->dbh->fetch_result($result, 0, "cf");
+
+		$config["num_feeds"] = (int)$num_feeds;
+
+		$this->wrap(self::STATUS_OK, $config);
+	}
+
+	function updateFeed() {
+		require_once "include/rssfuncs.php";
+
+		$feed_id = (int) $this->dbh->escape_string($_REQUEST["feed_id"]);
+
+		if (!ini_get("open_basedir")) {
+			update_rss_feed($feed_id, true);
+		}
+
+		$this->wrap(self::STATUS_OK, array("status" => "OK"));
+	}
+
+	function catchupFeed() {
+		$feed_id = $this->dbh->escape_string($_REQUEST["feed_id"]);
+		$is_cat = $this->dbh->escape_string($_REQUEST["is_cat"]);
+
+		catchup_feed($feed_id, $is_cat);
+
+		$this->wrap(self::STATUS_OK, array("status" => "OK"));
+	}
+
+	function getPref() {
+		$pref_name = $this->dbh->escape_string($_REQUEST["pref_name"]);
+
+		$this->wrap(self::STATUS_OK, array("value" => get_pref($pref_name)));
+	}
+
+	function getLabels() {
+		//$article_ids = array_filter(explode(",", $this->dbh->escape_string($_REQUEST["article_ids"])), is_numeric);
+
+		$article_id = (int)$_REQUEST['article_id'];
+
+		$rv = array();
+
+		$result = $this->dbh->query("SELECT id, caption, fg_color, bg_color
+			FROM ttrss_labels2
+			WHERE owner_uid = '".$_SESSION['uid']."' ORDER BY caption");
+
+		if ($article_id)
+			$article_labels = get_article_labels($article_id);
+		else
+			$article_labels = array();
+
+		while ($line = $this->dbh->fetch_assoc($result)) {
+
+			$checked = false;
+			foreach ($article_labels as $al) {
+				if (feed_to_label_id($al[0]) == $line['id']) {
+					$checked = true;
+					break;
+				}
+			}
+
+			array_push($rv, array(
+				"id" => (int)label_to_feed_id($line['id']),
+				"caption" => $line['caption'],
+				"fg_color" => $line['fg_color'],
+				"bg_color" => $line['bg_color'],
+				"checked" => $checked));
+		}
+
+		$this->wrap(self::STATUS_OK, $rv);
+	}
+
+	function setArticleLabel() {
+
+		$article_ids = array_filter(explode(",", $this->dbh->escape_string($_REQUEST["article_ids"])), is_numeric);
+		$label_id = (int) $this->dbh->escape_string($_REQUEST['label_id']);
+		$assign = (bool) $this->dbh->escape_string($_REQUEST['assign']) == "true";
+
+		$label = $this->dbh->escape_string(label_find_caption(
+			feed_to_label_id($label_id), $_SESSION["uid"]));
+
+		$num_updated = 0;
+
+		if ($label) {
+
+			foreach ($article_ids as $id) {
+
+				if ($assign)
+					label_add_article($id, $label, $_SESSION["uid"]);
+				else
+					label_remove_article($id, $label, $_SESSION["uid"]);
+
+				++$num_updated;
+
+			}
+		}
+
+		$this->wrap(self::STATUS_OK, array("status" => "OK",
+			"updated" => $num_updated));
+
+	}
+
+	function index($method) {
+		$plugin = PluginHost::getInstance()->get_api_method(strtolower($method));
+
+		if ($plugin && method_exists($plugin, $method)) {
+			$reply = $plugin->$method();
+
+			$this->wrap($reply[0], $reply[1]);
+
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => 'UNKNOWN_METHOD', "method" => $method));
+		}
+	}
+
+	function shareToPublished() {
+		$title = $this->dbh->escape_string(strip_tags($_REQUEST["title"]));
+		$url = $this->dbh->escape_string(strip_tags($_REQUEST["url"]));
+		$content = $this->dbh->escape_string(strip_tags($_REQUEST["content"]));
+
+		if (Article::create_published_article($title, $url, $content, "", $_SESSION["uid"])) {
+			$this->wrap(self::STATUS_OK, array("status" => 'OK'));
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => 'Publishing failed'));
+		}
+	}
+
+	static function api_get_feeds($cat_id, $unread_only, $limit, $offset, $include_nested = false) {
+
+			$feeds = array();
+
+			/* Labels */
+
+			if ($cat_id == -4 || $cat_id == -2) {
+				$counters = getLabelCounters(true);
+
+				foreach (array_values($counters) as $cv) {
+
+					$unread = $cv["counter"];
+
+					if ($unread || !$unread_only) {
+
+						$row = array(
+								"id" => (int) $cv["id"],
+								"title" => $cv["description"],
+								"unread" => $cv["counter"],
+								"cat_id" => -2,
+							);
+
+						array_push($feeds, $row);
+					}
+				}
+			}
+
+			/* Virtual feeds */
+
+			if ($cat_id == -4 || $cat_id == -1) {
+				foreach (array(-1, -2, -3, -4, -6, 0) as $i) {
+					$unread = getFeedUnread($i);
+
+					if ($unread || !$unread_only) {
+						$title = getFeedTitle($i);
+
+						$row = array(
+								"id" => $i,
+								"title" => $title,
+								"unread" => $unread,
+								"cat_id" => -1,
+							);
+						array_push($feeds, $row);
+					}
+
+				}
+			}
+
+			/* Child cats */
+
+			if ($include_nested && $cat_id) {
+				$result = db_query("SELECT
+					id, title FROM ttrss_feed_categories
+					WHERE parent_cat = '$cat_id' AND owner_uid = " . $_SESSION["uid"] .
+				" ORDER BY id, title");
+
+				while ($line = db_fetch_assoc($result)) {
+					$unread = getFeedUnread($line["id"], true) +
+						getCategoryChildrenUnread($line["id"]);
+
+					if ($unread || !$unread_only) {
+						$row = array(
+								"id" => (int) $line["id"],
+								"title" => $line["title"],
+								"unread" => $unread,
+								"is_cat" => true,
+							);
+						array_push($feeds, $row);
+					}
+				}
+			}
+
+			/* Real feeds */
+
+			if ($limit) {
+				$limit_qpart = "LIMIT $limit OFFSET $offset";
+			} else {
+				$limit_qpart = "";
+			}
+
+			if ($cat_id == -4 || $cat_id == -3) {
+				$result = db_query("SELECT
+					id, feed_url, cat_id, title, order_id, ".
+						SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
+						FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"] .
+						" ORDER BY cat_id, title " . $limit_qpart);
+			} else {
+
+				if ($cat_id)
+					$cat_qpart = "cat_id = '$cat_id'";
+				else
+					$cat_qpart = "cat_id IS NULL";
+
+				$result = db_query("SELECT
+					id, feed_url, cat_id, title, order_id, ".
+						SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
+						FROM ttrss_feeds WHERE
+						$cat_qpart AND owner_uid = " . $_SESSION["uid"] .
+						" ORDER BY cat_id, title " . $limit_qpart);
+			}
+
+			while ($line = db_fetch_assoc($result)) {
+
+				$unread = getFeedUnread($line["id"]);
+
+				$has_icon = feed_has_icon($line['id']);
+
+				if ($unread || !$unread_only) {
+
+					$row = array(
+							"feed_url" => $line["feed_url"],
+							"title" => $line["title"],
+							"id" => (int)$line["id"],
+							"unread" => (int)$unread,
+							"has_icon" => $has_icon,
+							"cat_id" => (int)$line["cat_id"],
+							"last_updated" => (int) strtotime($line["last_updated"]),
+							"order_id" => (int) $line["order_id"],
+						);
+
+					array_push($feeds, $row);
+				}
+			}
+
+		return $feeds;
+	}
+
+	static function api_get_headlines($feed_id, $limit, $offset,
+				$filter, $is_cat, $show_excerpt, $show_content, $view_mode, $order,
+				$include_attachments, $since_id,
+				$search = "", $include_nested = false, $sanitize_content = true,
+				$force_update = false, $excerpt_length = 100, $check_first_id = false, $skip_first_id_check = false) {
+
+			if ($force_update && $feed_id > 0 && is_numeric($feed_id)) {
+				// Update the feed if required with some basic flood control
+
+				$result = db_query(
+					"SELECT cache_images,".SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
+						FROM ttrss_feeds WHERE id = '$feed_id'");
+
+				if (db_num_rows($result) != 0) {
+					$last_updated = strtotime(db_fetch_result($result, 0, "last_updated"));
+					$cache_images = sql_bool_to_bool(db_fetch_result($result, 0, "cache_images"));
+
+					if (!$cache_images && time() - $last_updated > 120) {
+						include "rssfuncs.php";
+						update_rss_feed($feed_id, true, true);
+					} else {
+						db_query("UPDATE ttrss_feeds SET last_updated = '1970-01-01', last_update_started = '1970-01-01'
+							WHERE id = '$feed_id'");
+					}
+				}
+			}
+
+			/*$qfh_ret = queryFeedHeadlines($feed_id, $limit,
+				$view_mode, $is_cat, $search, false,
+				$order, $offset, 0, false, $since_id, $include_nested);*/
+
+			//function queryFeedHeadlines($feed, $limit,
+			// $view_mode, $cat_view, $search, $search_mode,
+			// $override_order = false, $offset = 0, $owner_uid = 0, $filter = false, $since_id = 0, $include_children = false,
+			// $ignore_vfeed_group = false, $override_strategy = false, $override_vfeed = false, $start_ts = false, $check_top_id = false) {
+
+			$params = array(
+				"feed" => $feed_id,
+				"limit" => $limit,
+				"view_mode" => $view_mode,
+				"cat_view" => $is_cat,
+				"search" => $search,
+				"override_order" => $order,
+				"offset" => $offset,
+				"since_id" => $since_id,
+				"include_children" => $include_nested,
+				"check_first_id" => $check_first_id,
+				"skip_first_id_check" => $skip_first_id_check
+			);
+
+			$qfh_ret = queryFeedHeadlines($params);
+
+			$result = $qfh_ret[0];
+			$feed_title = $qfh_ret[1];
+			$first_id = $qfh_ret[6];
+
+			$headlines = array();
+
+			$headlines_header = array(
+				'id' => $feed_id,
+				'first_id' => $first_id,
+				'is_cat' => $is_cat);
+
+			if (!is_numeric($result)) {
+				while ($line = db_fetch_assoc($result)) {
+					$line["content_preview"] = truncate_string(strip_tags($line["content"]), $excerpt_length);
+					foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_QUERY_HEADLINES) as $p) {
+						$line = $p->hook_query_headlines($line, $excerpt_length, true);
+					}
+
+					$is_updated = ($line["last_read"] == "" &&
+						($line["unread"] != "t" && $line["unread"] != "1"));
+
+					$tags = explode(",", $line["tag_cache"]);
+
+					$label_cache = $line["label_cache"];
+					$labels = false;
+
+					if ($label_cache) {
+						$label_cache = json_decode($label_cache, true);
+
+						if ($label_cache) {
+							if ($label_cache["no-labels"] == 1)
+								$labels = array();
+							else
+								$labels = $label_cache;
+						}
+					}
+
+					if (!is_array($labels)) $labels = get_article_labels($line["id"]);
+
+					//if (!$tags) $tags = get_article_tags($line["id"]);
+					//if (!$labels) $labels = get_article_labels($line["id"]);
+
+					$headline_row = array(
+						"id" => (int)$line["id"],
+						"unread" => sql_bool_to_bool($line["unread"]),
+						"marked" => sql_bool_to_bool($line["marked"]),
+						"published" => sql_bool_to_bool($line["published"]),
+						"updated" => (int)strtotime($line["updated"]),
+						"is_updated" => $is_updated,
+						"title" => $line["title"],
+						"link" => $line["link"],
+						"feed_id" => $line["feed_id"],
+						"tags" => $tags,
+					);
+
+					if ($include_attachments)
+						$headline_row['attachments'] = get_article_enclosures(
+							$line['id']);
+
+					if ($show_excerpt)
+						$headline_row["excerpt"] = $line["content_preview"];
+
+					if ($show_content) {
+
+						if ($sanitize_content) {
+							$headline_row["content"] = sanitize(
+								$line["content"],
+								sql_bool_to_bool($line['hide_images']),
+								false, $line["site_url"], false, $line["id"]);
+						} else {
+							$headline_row["content"] = $line["content"];
+						}
+					}
+
+					// unify label output to ease parsing
+					if ($labels["no-labels"] == 1) $labels = array();
+
+					$headline_row["labels"] = $labels;
+
+					$headline_row["feed_title"] = $line["feed_title"] ? $line["feed_title"] :
+						$feed_title;
+
+					$headline_row["comments_count"] = (int)$line["num_comments"];
+					$headline_row["comments_link"] = $line["comments"];
+
+					$headline_row["always_display_attachments"] = sql_bool_to_bool($line["always_display_enclosures"]);
+
+					$headline_row["author"] = $line["author"];
+
+					$headline_row["score"] = (int)$line["score"];
+					$headline_row["note"] = $line["note"];
+					$headline_row["lang"] = $line["lang"];
+
+					foreach (PluginHost::getInstance()->get_hooks(PluginHost::HOOK_RENDER_ARTICLE_API) as $p) {
+						$headline_row = $p->hook_render_article_api(array("headline" => $headline_row));
+					}
+
+					array_push($headlines, $headline_row);
+				}
+			} else if (is_numeric($result) && $result == -1) {
+				$headlines_header['first_id_changed'] = true;
+			}
+
+			return array($headlines, $headlines_header);
+	}
+
+	function unsubscribeFeed() {
+		$feed_id = (int) $this->dbh->escape_string($_REQUEST["feed_id"]);
+
+		$result = $this->dbh->query("SELECT id FROM ttrss_feeds WHERE
+			id = '$feed_id' AND owner_uid = ".$_SESSION["uid"]);
+
+		if ($this->dbh->num_rows($result) != 0) {
+			Pref_Feeds::remove_feed($feed_id, $_SESSION["uid"]);
+			$this->wrap(self::STATUS_OK, array("status" => "OK"));
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => "FEED_NOT_FOUND"));
+		}
+	}
+
+	function subscribeToFeed() {
+		$feed_url = $this->dbh->escape_string($_REQUEST["feed_url"]);
+		$category_id = (int) $this->dbh->escape_string($_REQUEST["category_id"]);
+		$login = $this->dbh->escape_string($_REQUEST["login"]);
+		$password = $this->dbh->escape_string($_REQUEST["password"]);
+
+		if ($feed_url) {
+			$rc = subscribe_to_feed($feed_url, $category_id, $login, $password);
+
+			$this->wrap(self::STATUS_OK, array("status" => $rc));
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" => 'INCORRECT_USAGE'));
+		}
+	}
+
+	function getFeedTree() {
+		$include_empty = sql_bool_to_bool($_REQUEST['include_empty']);
+
+		$pf = new Pref_Feeds($_REQUEST);
+
+		$_REQUEST['mode'] = 2;
+		$_REQUEST['force_show_empty'] = $include_empty;
+
+		if ($pf){
+			$data = $pf->makefeedtree();
+			$this->wrap(self::STATUS_OK, array("categories" => $data));
+		} else {
+			$this->wrap(self::STATUS_ERR, array("error" =>
+				'UNABLE_TO_INSTANTIATE_OBJECT'));
+		}
+
+	}
+
+	// only works for labels or uncategorized for the time being
+	private function isCategoryEmpty($id) {
+
+		if ($id == -2) {
+			$result = $this->dbh->query("SELECT COUNT(*) AS count FROM ttrss_labels2
+				WHERE owner_uid = " . $_SESSION["uid"]);
+
+			return $this->dbh->fetch_result($result, 0, "count") == 0;
+
+		} else if ($id == 0) {
+			$result = $this->dbh->query("SELECT COUNT(*) AS count FROM ttrss_feeds
+				WHERE cat_id IS NULL AND owner_uid = " . $_SESSION["uid"]);
+
+			return $this->dbh->fetch_result($result, 0, "count") == 0;
+
+		}
+
+		return false;
+	}
+
+
+}
+
+?>