diff --git a/include/api.php b/include/api.php
index ea804b18ba..740abf1e2e 100644
--- a/include/api.php
+++ b/include/api.php
@@ -13,6 +13,7 @@ use Friendica\Core\NotificationsManager;
 use Friendica\Core\Worker;
 use Friendica\Database\DBM;
 use Friendica\Model\User;
+use Friendica\Network\FKOAuth1;
 use Friendica\Network\HTTPException;
 use Friendica\Network\HTTPException\BadRequestException;
 use Friendica\Network\HTTPException\ForbiddenException;
@@ -30,7 +31,6 @@ 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/include/oauth.php b/include/oauth.php
deleted file mode 100644
index 8834b93555..0000000000
--- a/include/oauth.php
+++ /dev/null
@@ -1,184 +0,0 @@
-<?php
-/**
- * OAuth server
- * Based on oauth2-php <http://code.google.com/p/oauth2-php/>
- *
- */
-
-use Friendica\App;
-use Friendica\Core\Config;
-use Friendica\Core\PConfig;
-use Friendica\Core\System;
-use Friendica\Database\DBM;
-
-define('REQUEST_TOKEN_DURATION', 300);
-define('ACCESS_TOKEN_DURATION', 31536000);
-
-require_once("library/OAuth1.php");
-require_once("library/oauth2-php/lib/OAuth2.inc");
-
-class FKOAuthDataStore extends OAuthDataStore {
-  function gen_token(){
-		return md5(base64_encode(pack('N6', mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand(), uniqid())));
-  }
-
-  function lookup_consumer($consumer_key) {
-		logger(__function__.":".$consumer_key);
-      //echo "<pre>"; var_dump($consumer_key); killme();
-
-		$r = q("SELECT client_id, pw, redirect_uri FROM clients WHERE client_id='%s'",
-			dbesc($consumer_key)
-		);
-		if (DBM::is_result($r))
-			return new OAuthConsumer($r[0]['client_id'],$r[0]['pw'],$r[0]['redirect_uri']);
-		return null;
-  }
-
-  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)
-		);
-		if (DBM::is_result($r)){
-			$ot=new OAuthToken($r[0]['id'],$r[0]['secret']);
-			$ot->scope=$r[0]['scope'];
-			$ot->expires = $r[0]['expires'];
-			$ot->uid = $r[0]['uid'];
-			return $ot;
-		}
-		return null;
-  }
-
-  function lookup_nonce($consumer, $token, $nonce, $timestamp) {
-		//echo __file__.":".__line__."<pre>"; var_dump($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)
-		);
-		if (DBM::is_result($r))
-			return new OAuthToken($r[0]['id'],$r[0]['secret']);
-		return null;
-  }
-
-  function new_request_token($consumer, $callback = null) {
-		logger(__function__.":".$consumer.", ". $callback);
-		$key = $this->gen_token();
-		$sec = $this->gen_token();
-
-		if ($consumer->key){
-			$k = $consumer->key;
-		} else {
-			$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));
-		if (!$r) return null;
-		return new OAuthToken($key,$sec);
-  }
-
-  function new_access_token($token, $consumer, $verifier = null) {
-    logger(__function__.":".$token.", ". $consumer.", ". $verifier);
-
-    // return a new access token attached to this consumer
-    // for the user associated with this token if the request token
-    // is authorized
-    // should also invalidate the request token
-
-    $ret=Null;
-
-    // get user for this verifier
-    $uverifier = Config::get("oauth", $verifier);
-    logger(__function__.":".$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($uverifier));
-		if ($r)
-			$ret = new OAuthToken($key,$sec);
-	}
-
-
-	dba::delete('tokens', array('id' => $token->key));
-
-
-	if (!is_null($ret) && $uverifier!==false){
-		Config::delete("oauth", $verifier);
-	/*	$apps = PConfig::get($uverifier, "oauth", "apps");
-		if ($apps===false) $apps=array();
-		$apps[] = $consumer->key;
-		PConfig::set($uverifier, "oauth", "apps", $apps);*/
-	}
-
-    return $ret;
-
-  }
-}
-
-class FKOAuth1 extends OAuthServer {
-	function __construct() {
-		parent::__construct(new FKOAuthDataStore());
-		$this->add_signature_method(new OAuthSignatureMethod_PLAINTEXT());
-		$this->add_signature_method(new OAuthSignatureMethod_HMAC_SHA1());
-	}
-
-	function loginUser($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 = $r[0];
-		} else {
-		   logger('FKOAuth1::loginUser failure: ' . print_r($_SERVER,true), LOGGER_DEBUG);
-		    header('HTTP/1.0 401 Unauthorized');
-		    die('This api requires login');
-		}
-		$_SESSION['uid'] = $record['uid'];
-		$_SESSION['theme'] = $record['theme'];
-		$_SESSION['mobile-theme'] = PConfig::get($record['uid'], 'system', 'mobile_theme');
-		$_SESSION['authenticated'] = 1;
-		$_SESSION['page_flags'] = $record['page-flags'];
-		$_SESSION['my_url'] = System::baseUrl() . '/profile/' . $record['nickname'];
-		$_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
-		$_SESSION["allow_api"] = true;
-
-		//notice( t("Welcome back ") . $record['username'] . EOL);
-		$a->user = $record;
-
-		if (strlen($a->user['timezone'])) {
-			date_default_timezone_set($a->user['timezone']);
-			$a->timezone = $a->user['timezone'];
-		}
-
-		$r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
-			intval($_SESSION['uid']));
-		if (DBM::is_result($r)) {
-			$a->contact = $r[0];
-			$a->cid = $r[0]['id'];
-			$_SESSION['cid'] = $a->cid;
-		}
-		q("UPDATE `user` SET `login_date` = '%s' WHERE `uid` = %d",
-			dbesc(datetime_convert()),
-			intval($_SESSION['uid'])
-		);
-
-		call_hooks('logged_in', $a->user);
-	}
-
-}
diff --git a/src/Network/FKOAuth1.php b/src/Network/FKOAuth1.php
new file mode 100644
index 0000000000..768cae7d1b
--- /dev/null
+++ b/src/Network/FKOAuth1.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * @file src/Protocol/OAuth1.php
+ */
+namespace Friendica\Network;
+
+use Friendica\App;
+use Friendica\Core\PConfig;
+use Friendica\Core\System;
+use Friendica\Database\DBM;
+use Friendica\Network\FKOAuthDataStore;
+use dba;
+
+require_once "library/OAuth1.php";
+require_once "include/plugin.php";
+
+/**
+ * @brief OAuth protocol
+ */
+class FKOAuth1 extends OAuthServer
+{
+	/**
+	 * @brief Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct(new FKOAuthDataStore());
+		$this->add_signature_method(new OAuthSignatureMethod_PLAINTEXT());
+		$this->add_signature_method(new OAuthSignatureMethod_HMAC_SHA1());
+	}
+
+	/**
+	 * @param string $uid user id
+	 * @return void
+	 */
+	public static function loginUser($uid)
+	{
+		logger("FKOAuth1::loginUser $uid");
+		$a = get_app();
+		$record = dba::select('user', array(), array('uid' => $uid, 'blocked' => 0, 'account_expired' => 0, 'account_removed' => 0, 'verified' => 1), array('limit' => 1));
+
+		if (!DBM::is_result($record)) {
+			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'];
+		$_SESSION['mobile-theme'] = PConfig::get($record['uid'], 'system', 'mobile_theme');
+		$_SESSION['authenticated'] = 1;
+		$_SESSION['page_flags'] = $record['page-flags'];
+		$_SESSION['my_url'] = System::baseUrl() . '/profile/' . $record['nickname'];
+		$_SESSION['addr'] = $_SERVER['REMOTE_ADDR'];
+		$_SESSION["allow_api"] = true;
+
+		$a->user = $record;
+
+		if (strlen($a->user['timezone'])) {
+			date_default_timezone_set($a->user['timezone']);
+			$a->timezone = $a->user['timezone'];
+		}
+
+		$r = dba::select('contact', array(), array('uid' => $_SESSION['uid'], 'self' => 1), array('limit' => 1));
+		
+		if (DBM::is_result($r)) {
+			$a->contact = $r;
+			$a->cid = $r['id'];
+			$_SESSION['cid'] = $a->cid;
+		}
+
+		dba::update('user', ['login_date' => datetime_convert()], ['uid' => $_SESSION['uid']]);
+
+		call_hooks('logged_in', $a->user);
+	}
+}
diff --git a/src/Network/FKOAuthDataStore.php b/src/Network/FKOAuthDataStore.php
new file mode 100644
index 0000000000..0fcd01fc5c
--- /dev/null
+++ b/src/Network/FKOAuthDataStore.php
@@ -0,0 +1,179 @@
+<?php
+/**
+ * @file src/Protocol/FKOAuthDataStore.php
+ * OAuth server
+ * Based on oauth2-php <http://code.google.com/p/oauth2-php/>
+ *
+ */
+namespace Friendica\Network;
+
+use Friendica\App;
+use Friendica\Core\Config;
+use Friendica\Core\System;
+use Friendica\Database\DBM;
+use dba;
+
+define('REQUEST_TOKEN_DURATION', 300);
+define('ACCESS_TOKEN_DURATION', 31536000);
+
+require_once "library/OAuth1.php";
+require_once "library/oauth2-php/lib/OAuth2.inc";
+
+/**
+ * @brief OAuthDataStore class
+ */
+class FKOAuthDataStore extends OAuthDataStore
+{
+	/**
+	 * @return string
+	 */
+	private static function genToken()
+	{
+		return md5(base64_encode(pack('N6', mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand(), uniqid())));
+	}
+
+	/**
+	 * @param string $consumer_key key
+	 * @return mixed
+	 */
+	public static function lookup_consumer($consumer_key)
+	{
+		logger(__function__.":".$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']);
+		}
+
+		return null;
+	}
+
+	/**
+	 * @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);
+		
+		$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->expires = $r[0]['expires'];
+			$ot->uid = $r[0]['uid'];
+			return $ot;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @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)
+	{
+		$r = dba::select('tokens', ['id', 'secret'], ['client_id' => $consumer->key, 'id' => $nonce, 'expires' => $timestamp], ['limit' => 1]);
+				
+		if (DBM::is_result($r)) {
+			return new OAuthToken($r[0]['id'], $r[0]['secret']);
+		}
+
+		return 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 = self::genToken();
+		$sec = self::genToken();
+
+		if ($consumer->key) {
+			$k = $consumer->key;
+		} else {
+			$k = $consumer;
+		}
+
+		$r = dba::insert(
+			'tokens',
+			array(
+				'id' => $key,
+				'secret' => $sec,
+				'client_id' => $k,
+				'scope' => 'request',
+				'expires' => UNIX_TIMESTAMP() + REQUEST_TOKEN_DURATION)
+		);
+
+		if (!$r) {
+			return null;
+		}
+
+		return new OAuthToken($key, $sec);
+	}
+
+	/**
+	 * @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);
+
+		// return a new access token attached to this consumer
+		// for the user associated with this token if the request token
+		// is authorized
+		// should also invalidate the request token
+
+		$ret = null;
+
+		// get user for this verifier
+		$uverifier = Config::get("oauth", $verifier);
+		logger(__function__.":".$verifier.",".$uverifier);
+
+		if (is_null($verifier) || ($uverifier!==false)) {
+			$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) {
+				$ret = new OAuthToken($key, $sec);
+			}
+		}
+
+
+		dba::delete('tokens', array('id' => $token->key));
+
+
+		if (!is_null($ret) && $uverifier !== false) {
+			Config::delete("oauth", $verifier);
+		}
+
+		return $ret;
+	}
+}