Initial work adding oauth to api

2 files changed, 224 insertions, 1 deletions

diff --git a/include/api.php b/include/api.php
index 1334d8eae..252caeb8e 100644
--- a/include/api.php
+++ b/include/api.php
@@ -2,7 +2,7 @@
 	require_once("bbcode.php");
 	require_once("datetime.php");
 	require_once("conversation.php");
-	
+	require_once("oauth.php");
 	/* 
 	 * Twitter-Like API
 	 *  
@@ -1135,3 +1135,32 @@
 	}
 	api_register_func('api/direct_messages/sent','api_direct_messages_sentbox',true);
 	api_register_func('api/direct_messages','api_direct_messages_inbox',true);
+
+
+
+	function api_oauth_request_token(&$a, $type){
+		try{
+			$oauth = new FKOAuth1();
+			$r = $oauth->fetch_request_token(OAuthRequest::from_request());
+		}catch(Exception $e){
+			echo "error=". OAuthUtil::urlencode_rfc3986($e->getMessage()); killme();
+		}
+		echo "oauth_token=".$r->key."&oauth_secret=".$r->secret;
+		killme();	
+	}
+	function api_oauth_access_token(&$a, $type){
+		try{
+			$oauth = new FKOAuth1();
+			$r = $oauth->fetch_access_token(OAuthRequest::from_request());
+		}catch(Exception $e){
+			echo "error=". OAuthUtil::urlencode_rfc3986($e->getMessage()); killme();
+		}
+		echo "oauth_token=".$r->key."&oauth_secret=".$r->secret;
+		killme();			
+	}
+	function api_oauth_authorize(&$a, $type){
+	}
+	api_register_func('api/oauth/request_token', 'api_oauth_request_token', false);
+	api_register_func('api/oauth/access_token', 'api_oauth_access_token', false);
+	api_register_func('api/oauth/authorize', 'api_oauth_authorize', false);
+
diff --git a/include/oauth.php b/include/oauth.php
new file mode 100644
index 000000000..63d5fcd92
--- /dev/null
+++ b/include/oauth.php
@@ -0,0 +1,194 @@
+<?php
+/** 
+ * OAuth server
+ * Based on oauth2-php <http://code.google.com/p/oauth2-php/>
+ * 
+ */
+
+define('TOKEN_DURATION', 300);
+
+require_once("library/OAuth1.php");
+require_once("library/oauth2-php/lib/OAuth2.inc");
+
+class FKOAuthDataStore extends OAuthDataStore {
+  function gen_token(){
+		return md5(base64_encode(pack('N6', mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand(), uniqid())));
+  }
+	
+  function lookup_consumer($consumer_key) {
+      //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 (count($r))
+			return new OAuthConsumer($r[0]['client_id'],$r[0]['pw'],$r[0]['redirect_uri']);
+		return null;
+  }
+
+  function lookup_token($consumer, $token_type, $token) {
+		//echo __file__.":".__line__."<pre>"; var_dump($consumer, $token_type, $token); killme();
+		$r = q("SELECT id, secret,scope, expires  FROM tokens WHERE client_id='%s' AND scope='%s' AND id='%s'",
+			dbesc($consumer->key),
+			dbesc($token_type),
+			dbesc($token)
+		);
+		if (count($r)){
+			$ot=new OAuthToken($r[0]['id'],$r[0]['secret']);
+			$ot->scope=$r[0]['scope'];
+			$ot->expires = $r[0]['expires'];
+			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 (count($r))
+			return new OAuthToken($r[0]['id'],$r[0]['secret']);
+		return null;
+  }
+
+  function new_request_token($consumer, $callback = null) {
+		$key = $this->gen_token();
+		$sec = $this->gen_token();
+		$r = q("INSERT INTO tokens (id, secret, client_id, scope, expires) VALUES ('%s','%s','%s','%s', UNIX_TIMESTAMP()+%d)",
+				dbesc($key),
+				dbesc($sec),
+				dbesc($consumer->key),
+				'request',
+				intval(TOKEN_DURATION));
+		if (!$r) return null;
+		return new OAuthToken($key,$sec);
+  }
+
+  function new_access_token($token, $consumer, $verifier = null) {
+    // 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
+    
+    $ret=Null;
+    
+    if (!is_null($token) && $token->expires > time()){
+		
+		$key = $this->gen_token();
+		$sec = $this->gen_token();
+		$r = q("INSERT INTO tokens (id, secret, client_id, scope, expires) VALUES ('%s','%s','%s','%s', UNIX_TIMESTAMP()+%d)",
+				dbesc($key),
+				dbesc($sec),
+				dbesc($consumer->$key),
+				'access',
+				intval(TOKEN_DURATION));
+		if ($r)
+			$ret = new OAuthToken($key,$sec);		
+	}
+		
+		
+	q("DELETE FROM tokens WHERE id='%s'", $token->key);
+		
+    return $ret;
+    
+  }
+}
+
+class FKOAuth1 extends OAuthServer {
+	function __construct() {
+		parent::__construct(new FKOAuthDataStore());
+		$this->add_signature_method(new OAuthSignatureMethod_PLAINTEXT());
+	}
+}
+
+class FKOAuth2 extends OAuth2 {
+
+	private function db_secret($client_secret){
+		return hash('whirlpool',$client_secret);
+	}
+
+	public function addClient($client_id, $client_secret, $redirect_uri) {
+		$client_secret = $this->db_secret($client_secret);
+		$r = q("INSERT INTO clients (client_id, pw, redirect_uri) VALUES ('%s', '%s', '%s')",
+			dbesc($client_id),
+			dbesc($client_secret),
+			dbesc($redirect_uri)
+		);
+		  
+		return $r;
+	}
+
+	protected function checkClientCredentials($client_id, $client_secret = NULL) {
+		$client_secret = $this->db_secret($client_secret);
+		
+		$r = q("SELECT pw FROM clients WHERE client_id = '%s'",
+			dbesc($client_id));
+
+		if ($client_secret === NULL)
+			return $result !== FALSE;
+
+		return $result["client_secret"] == $client_secret;
+	}
+
+	protected function getRedirectUri($client_id) {
+		$r = q("SELECT redirect_uri FROM clients WHERE client_id = '%s'",
+				dbesc($client_id));
+		if ($r === FALSE)
+			return FALSE;
+
+		return isset($r[0]["redirect_uri"]) && $r[0]["redirect_uri"] ? $r[0]["redirect_uri"] : NULL;
+	}
+
+	protected function getAccessToken($oauth_token) {
+		$r = q("SELECT client_id, expires, scope FROM tokens WHERE id = '%s'",
+				dbesc($oauth_token));
+	
+		if (count($r))
+			return $r[0];
+		return null;
+	}
+
+
+	
+	protected function setAccessToken($oauth_token, $client_id, $expires, $scope = NULL) {
+		$r = q("INSERT INTO tokens (id, client_id, expires, scope) VALUES ('%s', '%s', %d, '%s')",
+				dbesc($oauth_token),
+				dbesc($client_id),
+				intval($expires),
+				dbesc($scope));
+				
+		return $r;
+	}
+
+	protected function getSupportedGrantTypes() {
+		return array(
+		  OAUTH2_GRANT_TYPE_AUTH_CODE,
+		);
+	}
+
+
+	protected function getAuthCode($code) {
+		$r = q("SELECT id, client_id, redirect_uri, expires, scope FROM auth_codes WHERE id = '%s'",
+				dbesc($code));
+		
+		if (count($r))
+			return $r[0];
+		return null;
+	}
+
+	protected function setAuthCode($code, $client_id, $redirect_uri, $expires, $scope = NULL) {
+		$r = q("INSERT INTO auth_codes 
+					(id, client_id, redirect_uri, expires, scope) VALUES 
+					('%s', '%s', '%s', %d, '%s')",
+				dbesc($code),
+				dbesc($client_id),
+				dbesc($redirect_uri),
+				intval($expires),
+				dbesc($scope));
+		return $r;	  
+	}	
+	
+}