add experimental JSON api

api/index.php

+<?php
+
+	/* This is experimental JSON-based API. It has to be manually enabled:
+	 * 
+	 * Add define('_JSON_API_ENABLED', true) to config.php
+	 */
+
+	error_reporting(E_ERROR | E_PARSE);
+
+	require_once "../config.php";
+	
+	require_once "../db.php";
+	require_once "../db-prefs.php";
+	require_once "../functions.php";
+
+	if (!defined('_JSON_API_ENABLED')) {
+		print json_encode(array("error" => "API_DISABLED"));
+		return;
+	}
+
+	$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);	
+
+	$session_expire = SESSION_EXPIRE_TIME; //seconds
+	$session_name = (!defined('TTRSS_SESSION_NAME')) ? "ttrss_sid_api" : TTRSS_SESSION_NAME . "_api";
+
+	session_start();
+
+	if (!$link) {
+		if (DB_TYPE == "mysql") {
+			print mysql_error();
+		}
+		// PG seems to display its own errors just fine by default.		
+		return;
+	}
+
+	init_connection($link);
+
+	$op = db_escape_string($_REQUEST["op"]);
+
+//	header("Content-Type: application/json");
+
+	if (!$_SESSION["uid"] && $op != "login" && $op != "isLoggedIn") {
+		print json_encode(array("error" => 'NOT_LOGGED_IN'));
+		return;
+	}
+
+/*	TODO: add pref key to disable/enable API
+	if ($_SESSION["uid"] && !get_pref($link, 'API_ENABLED')) {
+		print json_encode(array("error" => 'API_DISABLED'));
+		return;
+	} */
+
+	switch ($op) {
+		case "getVersion":
+			$rv = array("version" => VERSION);
+			print json_encode($rv);
+		break;
+		case "login":
+			$login = db_escape_string($_REQUEST["user"]);
+			$password = db_escape_string($_REQUEST["password"]);
+
+			if (authenticate_user($link, $login, $password)) {
+				print json_encode(array("uid" => $_SESSION["uid"]));
+			} else {
+				print json_encode(array("uid" => 0));
+			}
+
+			break;
+		case "logout":
+			logout_user();
+			print json_encode(array("uid" => 0));
+			break;
+		case "isLoggedIn":
+			print json_encode(array("status" => $_SESSION["uid"] != ''));
+			break;
+		case "getFeeds":
+			$cat_id = db_escape_string($_REQUEST["cat_id"]);
+			$unread_only = (bool)db_escape_string($_REQUEST["unread_only"]);
+
+			if (!$cat_id) {
+				$result = db_query($link, "SELECT 
+					id, feed_url, cat_id, title, ".
+						SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
+						FROM ttrss_feeds WHERE owner_uid = " . $_SESSION["uid"]);
+			} else {
+				$result = db_query($link, "SELECT 
+					id, feed_url, cat_id, title, ".
+						SUBSTRING_FOR_DATE."(last_updated,1,19) AS last_updated
+						FROM ttrss_feeds WHERE 
+							cat_id = '$cat_id' AND owner_uid = " . $_SESSION["uid"]);
+			}
+
+			$feeds = array();
+
+			while ($line = db_fetch_assoc($result)) {
+
+				$unread = getFeedUnread($link, $line["id"]);
+
+				if ($unread || !$unread_only) {
+
+					$line_struct = array(
+							"feed_url" => $line["feed_url"],
+							"title" => $line["title"],
+							"id" => (int)$line["id"],
+							"unread" => (int)$unread,
+							"cat_id" => (int)$line["cat_id"],
+							"last_updated" => strtotime($line["last_updated"])
+						);
+	
+					array_push($feeds, $line_struct);
+				}
+			}
+
+			print json_encode($feeds);
+
+			break;
+		case "getCategories":
+			$result = db_query($link, "SELECT 
+					id, title FROM ttrss_feed_categories 
+				WHERE owner_uid = " . 
+				$_SESSION["uid"]);
+
+			$cats = array();
+
+			while ($line = db_fetch_assoc($result)) {
+				$unread = getFeedUnread($link, $line["id"], true);
+				array_push($cats, array($line["id"] => 
+					array("title" => $line["title"], "unread" => $unread)));
+			}
+
+			print json_encode($cats);
+			break;
+		case "getHeadlines":
+			$feed_id = db_escape_string($_REQUEST["feed_id"]);
+			$limit = (int)db_escape_string($_REQUEST["limit"]);
+			$filter = db_escape_string($_REQUEST["filter"]);
+			$is_cat = (bool)db_escape_string($_REQUEST["is_cat"]);
+			$show_except = (bool)db_escape_string($_REQUEST["show_excerpt"]);
+
+			/* do not rely on params below */
+
+			$search = db_escape_string($_REQUEST["search"]);
+			$search_mode = db_escape_string($_REQUEST["search_mode"]);
+			$match_on = db_escape_string($_REQUEST["match_on"]);
+			
+			$qfh_ret = queryFeedHeadlines($link, $feed_id, $limit, 
+				$view_mode, $is_cat, $search, $search_mode, $match_on);
+
+			$result = $qfh_ret[0];
+			$feed_title = $qfh_ret[1];
+
+			$headlines = array();
+
+			while ($line = db_fetch_assoc($result)) {
+				$is_updated = ($line["last_read"] == "" && 
+					($line["unread"] != "t" && $line["unread"] != "1"));
+
+				$headline_row = array(
+						"id" => (int)$line["id"],
+						"unread" => sql_bool_to_bool($line["unread"]),
+						"marked" => sql_bool_to_bool($line["marked"]),
+						"updated" => strtotime($line["updated"]),
+						"is_updated" => $is_updated,
+						"title" => $line["title"],
+						"feed_id" => $line["feed_id"],
+					);
+
+				if ($show_except) $headline_row["excerpt"] = $line["content_preview"];
+			
+				array_push($headlines, $headline_row);
+			}
+
+			print json_encode($headlines);
+
+			break;
+	}
+
+	db_close($link);
+	
+?>