diff --git a/include/api.php b/include/api.php
index ea804b18ba..e55af1ae99 100644
--- a/include/api.php
+++ b/include/api.php
@@ -25,12 +25,12 @@ use Friendica\Network\HTTPException\TooManyRequestsException;
 use Friendica\Object\Contact;
 use Friendica\Object\Photo;
 use Friendica\Protocol\Diaspora;
+use Friendica\Protocol\FKOAuth1;
 use Friendica\Util\XML;
 
 require_once 'include/bbcode.php';
 require_once 'include/datetime.php';
 require_once 'include/conversation.php';
-require_once 'include/oauth.php';
 require_once 'include/html2plain.php';
 require_once 'mod/share.php';
 require_once 'mod/item.php';
@@ -159,10 +159,9 @@ function api_login(App $a)
 {
 	// login with oauth
 	try {
-		$oauth = new FKOAuth1();
-		list($consumer,$token) = $oauth->verify_request(OAuthRequest::from_request());
+		list($consumer, $token) = FKOAuth1::verify_request(OAuthRequest::from_request());
 		if (!is_null($token)) {
-			$oauth->loginUser($token->uid);
+			FKOAuth1::loginUser($token->uid);
 			call_hooks('logged_in', $a->user);
 			return;
 		}
@@ -3365,8 +3364,7 @@ api_register_func('api/direct_messages', 'api_direct_messages_inbox', true);
 function api_oauth_request_token($type)
 {
 	try {
-		$oauth = new FKOAuth1();
-		$r = $oauth->fetch_request_token(OAuthRequest::from_request());
+		$r = FKOAuth1::fetch_request_token(OAuthRequest::from_request());
 	} catch (Exception $e) {
 		echo "error=" . OAuthUtil::urlencode_rfc3986($e->getMessage());
 		killme();
@@ -3378,8 +3376,7 @@ function api_oauth_request_token($type)
 function api_oauth_access_token($type)
 {
 	try {
-		$oauth = new FKOAuth1();
-		$r = $oauth->fetch_access_token(OAuthRequest::from_request());
+		$r = FKOAuth1::fetch_access_token(OAuthRequest::from_request());
 	} catch (Exception $e) {
 		echo "error=". OAuthUtil::urlencode_rfc3986($e->getMessage());
 		killme();
diff --git a/src/Protocol/FKOAuth1.php b/src/Protocol/FKOAuth1.php
index 5d0e9e52bf..710097ae00 100644
--- a/src/Protocol/FKOAuth1.php
+++ b/src/Protocol/FKOAuth1.php
@@ -29,19 +29,22 @@ class FKOAuth1 extends OAuthServer
 		$this->add_signature_method(new OAuthSignatureMethod_HMAC_SHA1());
 	}
 
-	function loginUser($uid)
+	/**
+	 * @param string $uid user id
+	 * @return void
+	 */
+	public static function loginUser($uid)
 	{
 		logger("FKOAuth1::loginUser $uid");
 		$a = get_app();
-		$r = q("SELECT * FROM `user` WHERE uid=%d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1",
-			intval($uid)
-		);
-		if (DBM::is_result($r)){
-			$record = $r[0];
+		$r = dba::select('user', array(), array('uid' => $uid, 'blocked' => 0, 'account_expired' => 0, 'account_removed' => 0, 'verified' => 1), array('limit' => 1));
+
+		if (DBM::is_result($r)) {
+			$record = $r;
 		} else {
-		   logger('FKOAuth1::loginUser failure: ' . print_r($_SERVER,true), LOGGER_DEBUG);
-		    header('HTTP/1.0 401 Unauthorized');
-		    die('This api requires login');
+			logger('FKOAuth1::loginUser failure: ' . print_r($_SERVER, true), LOGGER_DEBUG);
+			header('HTTP/1.0 401 Unauthorized');
+			die('This api requires login');
 		}
 		$_SESSION['uid'] = $record['uid'];
 		$_SESSION['theme'] = $record['theme'];
@@ -52,7 +55,6 @@ class FKOAuth1 extends OAuthServer
 		$_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
 		$_SESSION["allow_api"] = true;
 
-		//notice( t("Welcome back ") . $record['username'] . EOL);
 		$a->user = $record;
 
 		if (strlen($a->user['timezone'])) {
@@ -60,14 +62,15 @@ class FKOAuth1 extends OAuthServer
 			$a->timezone = $a->user['timezone'];
 		}
 
-		$r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
-			intval($_SESSION['uid']));
+		$r = dba::select('contact', array(), array('uid' => $_SESSION['uid'], 'self' => 1), array('limit' => 1));
+		
 		if (DBM::is_result($r)) {
-			$a->contact = $r[0];
-			$a->cid = $r[0]['id'];
+			$a->contact = $r;
+			$a->cid = $r['id'];
 			$_SESSION['cid'] = $a->cid;
 		}
-		q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d",
+
+		dba::q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d",
 			dbesc(datetime_convert()),
 			intval($_SESSION['uid'])
 		);
diff --git a/src/Protocol/FKOAuthDataStore.php b/src/Protocol/FKOAuthDataStore.php
index 08c32df213..dc4b774b9b 100644
--- a/src/Protocol/FKOAuthDataStore.php
+++ b/src/Protocol/FKOAuthDataStore.php
@@ -24,18 +24,24 @@ require_once "library/oauth2-php/lib/OAuth2.inc";
  */
 class FKOAuthDataStore extends OAuthDataStore
 {
-	function gen_token()
+	/**
+	 * @return string
+	 */
+	private static function genToken()
 	{
 		return md5(base64_encode(pack('N6', mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand(), uniqid())));
 	}
 
-	function lookup_consumer($consumer_key)
+	/**
+	 * @param string $consumer_key key
+	 * @return mixed
+	 */
+	public static function lookup_consumer($consumer_key)
 	{
 		logger(__function__.":".$consumer_key);
 		
-		$r = q("SELECT client_id, pw, redirect_uri FROM clients WHERE client_id='%s'",
-			dbesc($consumer_key)
-		);
+		$s = dba::select('clients', array('client_id', 'pw', 'redirect_uri'), array('client_id' => $consumer_key));
+		$r = dba::inArray($r);
 
 		if (DBM::is_result($r)) {
 			return new OAuthConsumer($r[0]['client_id'], $r[0]['pw'], $r[0]['redirect_uri']);
@@ -44,32 +50,41 @@ class FKOAuthDataStore extends OAuthDataStore
 		return null;
 	}
 
-	function lookup_token($consumer, $token_type, $token)
+	/**
+	 * @param string $consumer   consumer
+	 * @param string $token_type type
+	 * @param string $token      token
+	 * @return mixed
+	 */
+	public static function lookup_token($consumer, $token_type, $token)
 	{
 		logger(__function__.":".$consumer.", ". $token_type.", ".$token);
-		$r = q("SELECT id, secret,scope, expires, uid  FROM tokens WHERE client_id='%s' AND scope='%s' AND id='%s'",
-			dbesc($consumer->key),
-			dbesc($token_type),
-			dbesc($token)
-		);
+		
+		$s = dba::select('tokens', array('id', 'secret', 'scope', 'expires', 'uid'), array('client_id' => $consumer->key, 'scope' => $token_type, 'id' => $token));
+		$r = dba::inArray($s);
+
 		if (DBM::is_result($r)) {
 			$ot=new OAuthToken($r[0]['id'], $r[0]['secret']);
-			$ot->scope=$r[0]['scope'];
+			$ot->scope = $r[0]['scope'];
 			$ot->expires = $r[0]['expires'];
 			$ot->uid = $r[0]['uid'];
 			return $ot;
 		}
+
 		return null;
 	}
 
-	function lookup_nonce($consumer, $token, $nonce, $timestamp)
+	/**
+	 * @param string $consumer  consumer
+	 * @param string $token     token
+	 * @param string $nonce     nonce
+	 * @param string $timestamp timestamp
+	 * @return mixed
+	 */
+	public static function lookup_nonce($consumer, $token, $nonce, $timestamp)
 	{
-		//echo __file__.":".__line__."<pre>"; var_dump($consumer,$key); killme();
-		$r = q("SELECT id, secret  FROM tokens WHERE client_id='%s' AND id='%s' AND expires=%d",
-			dbesc($consumer->key),
-			dbesc($nonce),
-			intval($timestamp)
-		);
+		$s = dba::select('tokens', array('id', 'secret'), array('client_id' => $consumer->key, 'id' => $nonce, 'expires' => $timestamp));
+		$r = dba::inArray($s);
 		
 		if (DBM::is_result($r)) {
 			return new OAuthToken($r[0]['id'], $r[0]['secret']);
@@ -78,11 +93,16 @@ class FKOAuthDataStore extends OAuthDataStore
 		return null;
 	}
 
-	function new_request_token($consumer, $callback = null)
+	/**
+	 * @param string $consumer consumer
+	 * @param string $callback optional, default null
+	 * @return mixed
+	 */
+	public static function new_request_token($consumer, $callback = null)
 	{
 		logger(__function__.":".$consumer.", ". $callback);
-		$key = $this->gen_token();
-		$sec = $this->gen_token();
+		$key = self::genToken();
+		$sec = self::genToken();
 
 		if ($consumer->key) {
 			$k = $consumer->key;
@@ -90,12 +110,14 @@ class FKOAuthDataStore extends OAuthDataStore
 			$k = $consumer;
 		}
 
-		$r = q("INSERT INTO tokens (id, secret, client_id, scope, expires) VALUES ('%s','%s','%s','%s', UNIX_TIMESTAMP()+%d)",
-			dbesc($key),
-			dbesc($sec),
-			dbesc($k),
-			'request',
-			intval(REQUEST_TOKEN_DURATION)
+		$r = dba::insert(
+			'tokens',
+			array(
+				'id' => $key,
+				'secret' => $sec,
+				'client_id' => $k,
+				'scope' => 'request',
+				'expires' => UNIX_TIMESTAMP() + REQUEST_TOKEN_DURATION)
 		);
 
 		if (!$r) {
@@ -105,7 +127,13 @@ class FKOAuthDataStore extends OAuthDataStore
 		return new OAuthToken($key, $sec);
 	}
 
-	function new_access_token($token, $consumer, $verifier = null)
+	/**
+	 * @param string $token    token
+	 * @param string $consumer consumer
+	 * @param string $verifier optional, defult null
+	 * @return object
+	 */
+	public static function new_access_token($token, $consumer, $verifier = null)
 	{
 		logger(__function__.":".$token.", ". $consumer.", ". $verifier);
 
@@ -121,15 +149,17 @@ class FKOAuthDataStore extends OAuthDataStore
 		logger(__function__.":".$verifier.",".$uverifier);
 
 		if (is_null($verifier) || ($uverifier!==false)) {
-			$key = $this->gen_token();
-			$sec = $this->gen_token();
-			$r = q("INSERT INTO tokens (id, secret, client_id, scope, expires, uid) VALUES ('%s','%s','%s','%s', UNIX_TIMESTAMP()+%d, %d)",
-				dbesc($key),
-				dbesc($sec),
-				dbesc($consumer->key),
-				'access',
-				intval(ACCESS_TOKEN_DURATION),
-				intval($uverifier)
+			$key = self::genToken();
+			$sec = self::genToken();
+			$r = dba::insert(
+				'tokens',
+				array(
+					'id' => $key,
+					'secret' => $sec,
+					'client_id' => $consumer->key,
+					'scope' => 'access',
+					'expires' => UNIX_TIMESTAMP() + ACCESS_TOKEN_DURATION,
+					'uid' => $uverifier)
 			);
 
 			if ($r) {