start api implementation

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

api.php

@@ -0,0 +1,69 @@
+<?php
+require __DIR__ . '/lib/classes/api/api_includes.inc.php';
+
+// check whether API interface is enabled after all
+if (Settings::Get('api.enabled') != 1) {
+	// not enabled
+	header("Status: 404 Not found", 404);
+	header($_SERVER["SERVER_PROTOCOL"] . " 404 Not found", 404);
+	exit();
+}
+
+// we're talking json here
+header("Content-Type:application/json");
+
+// get our request
+$request = isset($_GET['request']) ? $_GET['request'] : null;
+if (empty($request)) {
+	$request = isset($_POST['request']) ? $_POST['request'] : null;
+}
+
+// check if present
+if (empty($request)) {
+	json_response(400, "Invalid request");
+}
+
+// decode json request
+$decoded_request = json_decode(stripslashes($request), true);
+
+// is it valid?
+if (is_null($decoded_request)) {
+	json_response(400, "Invalid JSON");
+}
+
+// validate content
+try {
+	$request = FroxlorRPC::validateRequest($decoded_request);
+	// now actually do it
+	$cls = $request['command']['class'];
+	$method = $request['command']['method'];
+	$apiObj = new $cls($decoded_request['header'], $request['params']);
+	// call the method with the params if any
+	echo $apiObj->$method();
+} catch (Exception $e) {
+	json_response($e->getCode(), $e->getMessage());
+}
+
+exit();
+
+/**
+ * output json result
+ *
+ * @param int $status
+ * @param string $status_message
+ * @param mixed $data
+ *
+ * @return void
+ */
+function json_response($status, $status_message, $data = null)
+{
+	header("HTTP/1.1 " . $status);
+	
+	$response['status'] = $status;
+	$response['status_message'] = $status_message;
+	$response['data'] = $data;
+	
+	$json_response = json_encode($response, JSON_PRETTY_PRINT);
+	echo $json_response;
+	exit();
+}