基于ThinkPHP框架筹建OAuth2.0服务-PHP Tutorial-php.cn

基于ThinkPHP框架搭建OAuth2.0服务

这几天一直在搞OAuth2.0的东西，写SDK啥的，为了更加深入的了解服务端的OAuth验证机制，就自己动手搭了个php下OAuth的环境，并且将它移植到了自己比较熟的tp框架里。

废话不少说，开动。

其实网上是有OAuth2.0的php版本的。

你可以在http://code.google.com/p/oauth2-php/?找到源代码，上面实现了PDO和MongoDB的数据模式。这里我也是基于这些代码在TP中进行整合的。

好，这里我们可以把下载下来的包解压，把Lib下的OAuth.inc改名为OAuth2.class.php后放到tp核心包下的目录下:

/Extend/Library/ORG/OAuth/OAuth2.class.php

Copy after login

接下来我们要继承这个类；

在这个目录下新建一个ThinkOAuth2.class.php文件：

<?php/** * @category ORG * @package ORG * @author Leyteris * @version 2012.3.16 */// OAUTH2_DB_DSN  数据库连接DSN// OAUTH2_CODES_TABLE 服务器表名称// OAUTH2_CLIENTS_TABLE 客户端表名称// OAUTH2_TOKEN_TABLE 验证码表名称import("ORG.OAuth.OAuth2");class ThinkOAuth2 extends OAuth2 {	private $db;	private $table;	/**	 * 构造	 */	public function __construct() {		parent::__construct();		$this -> db = Db::getInstance(C('OAUTH2_DB_DSN'));		$this -> table = array(			'auth_codes'=>C('OAUTH2_CODES_TABLE'),			'clients'=>C('OAUTH2_CLIENTS_TABLE'),			'tokens'=>C('OAUTH2_TOKEN_TABLE')		);	}	/**	 * 析构	 */	function __destruct() {		$this->db = NULL; // Release db connection	}	private function handleException($e) {		echo "Database error: " . $e->getMessage();		exit;	}	/**	 * 	 * 增加client	 * @param string $client_id	 * @param string $client_secret	 * @param string $redirect_uri	 */	public function addClient($client_id, $client_secret, $redirect_uri) {				$time = time();		$sql = "INSERT INTO {$this -> table['clients']} ".			"(client_id, client_secret, redirect_uri, create_time) VALUES (\"{$client_id}\", \"{$client_secret}\", \"{$redirect_uri}\",\"{$time}\")";				$this -> db -> execute($sql);			}	/**	 * Implements OAuth2::checkClientCredentials()	 * @see OAuth2::checkClientCredentials()	 */	protected function checkClientCredentials($client_id, $client_secret = NULL) {				$sql = "SELECT client_secret FROM {$this -> table['clients']} ".			"WHERE client_id = \"{$client_id}\"";				$result = $this -> db -> query($sql);		if ($client_secret === NULL) {			return $result !== FALSE;		}				//Log::write("checkClientCredentials : ".$result);		//Log::write("checkClientCredentials : ".$result[0]);		//Log::write("checkClientCredentials : ".$result[0]["client_secret"]);				return $result[0]["client_secret"] == $client_secret;			}	/**	 * Implements OAuth2::getRedirectUri().	 * @see OAuth2::getRedirectUri()	 */	protected function getRedirectUri($client_id) {				$sql = "SELECT redirect_uri FROM {$this -> table['clients']} ".			"WHERE client_id = \"{$client_id}\"";				$result = $this -> db -> query($sql);				if ($result === FALSE) {			return FALSE;		}				//Log::write("getRedirectUri : ".$result);		//Log::write("getRedirectUri : ".$result[0]);		//Log::write("getRedirectUri : ".$result[0]["redirect_uri"]);				return isset($result[0]["redirect_uri"]) && $result[0]["redirect_uri"] ? $result[0]["redirect_uri"] : NULL;			}	/**	 * Implements OAuth2::getAccessToken().	 * @see OAuth2::getAccessToken()	 */	protected function getAccessToken($access_token) {				$sql = "SELECT client_id, expires, scope FROM {$this -> table['tokens']} ".			"WHERE access_token = \"{$access_token}\"";				$result = $this -> db -> query($sql);				//Log::write("getAccessToken : ".$result);		//Log::write("getAccessToken : ".$result[0]);				return $result !== FALSE ? $result : NULL;			}	/**	 * Implements OAuth2::setAccessToken().	 * @see OAuth2::setAccessToken()	 */	protected function setAccessToken($access_token, $client_id, $expires, $scope = NULL) {				$sql = "INSERT INTO {$this -> table['tokens']} ".			"(access_token, client_id, expires, scope) ".			"VALUES (\"{$access_token}\", \"{$client_id}\", \"{$expires}\", \"{$scope}\")";				$this -> db -> execute($sql);			}	/**	 * Overrides OAuth2::getSupportedGrantTypes().	 * @see OAuth2::getSupportedGrantTypes()	 */	protected function getSupportedGrantTypes() {		return array(			OAUTH2_GRANT_TYPE_AUTH_CODE		);	}	/**	 * Overrides OAuth2::getAuthCode().	 * @see OAuth2::getAuthCode()	 */	protected function getAuthCode($code) {				$sql = "SELECT code, client_id, redirect_uri, expires, scope ".			"FROM {$this -> table['auth_codes']} WHERE code = \"{$code}\"";				$result = $this -> db -> query($sql);				//Log::write("getAuthcode : ".$result);		//Log::write("getAuthcode : ".$result[0]);		//Log::write("getAuthcode : ".$result[0]["code"]);				return $result !== FALSE ? $result[0] : NULL;	}	/**	 * Overrides OAuth2::setAuthCode().	 * @see OAuth2::setAuthCode()	 */	protected function setAuthCode($code, $client_id, $redirect_uri, $expires, $scope = NULL) {				$time = time();		$sql = "INSERT INTO {$this -> table['auth_codes']} ".			"(code, client_id, redirect_uri, expires, scope) ".			"VALUES (\"${code}\", \"${client_id}\", \"${redirect_uri}\", \"${expires}\", \"${scope}\")";				$result = $this -> db -> execute($sql);  }    /**   * Overrides OAuth2::checkUserCredentials().   * @see OAuth2::checkUserCredentials()   */  protected function checkUserCredentials($client_id, $username, $password){  	return TRUE;  }}

Copy after login

?在这里我们需要创建数据库：

CREATE TABLE `oauth_client` (  `id` bigint(20) NOT NULL auto_increment,  `client_id` varchar(32) NOT NULL,  `client_secret` varchar(32) NOT NULL,  `redirect_uri` varchar(200) NOT NULL,  `create_time` int(20) default NULL,  PRIMARY KEY  (`id`)) ENGINE=MyISAM AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;CREATE TABLE `oauth_code` (  `id` bigint(20) NOT NULL auto_increment,  `client_id` varchar(32) NOT NULL,  `user_id` varchar(32) NOT NULL,  `code` varchar(40) NOT NULL,  `redirect_uri` varchar(200) NOT NULL,  `expires` int(11) NOT NULL,  `scope` varchar(250) default NULL,  PRIMARY KEY  (`id`)) ENGINE=MyISAM DEFAULT CHARSET=utf8;CREATE TABLE `oauth_token` (  `id` bigint(20) NOT NULL auto_increment,  `client_id` varchar(32) NOT NULL,  `user_id` varchar(32) NOT NULL,  `access_token` varchar(40) NOT NULL,  `refresh_token` varchar(40) NOT NULL,  `expires` int(11) NOT NULL,  `scope` varchar(200) default NULL,  PRIMARY KEY  (`id`)) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

Copy after login

上面的数据库表名可以自己随便定；但是要在config.php配置表名：

'OAUTH2_CODES_TABLE'=>'oauth_code','OAUTH2_CLIENTS_TABLE'=>'oauth_client','OAUTH2_TOKEN_TABLE'=>'oauth_token',

Copy after login

如果OAuth的服务器不是当前服务器，那就要指定下DSN地址了：

'OAUTH2_DB_DSN'=>'mysql://root:[email&#160;protected]:3306/database'

Copy after login

好了，大致的核心库代码就是如此。接下来要使用它

我们创建一个OAuth的Action负责OAuth2的一些验证（OauthAction.class.php）

import("ORG.OAuth.ThinkOAuth2");class OauthAction extends Action {		private $oauth = NULL;	function _initialize(){				header("Content-Type: application/json");    	<span style="white-space: pre;">	</span>header("Cache-Control: no-store");		$this -> oauth = new ThinkOAuth2();    }    	public function index(){    	        header("Content-Type:application/json; charset=utf-8");		$this -> ajaxReturn(null, 'oauth-server-start', 1, 'json');            }    	public function access_token() {				$this -> oauth -> grantAccessToken();	}		//权限验证	public function authorize() {				if ($_POST) {			$this -> oauth -> finishClientAuthorization($_POST["accept"] == "Yep", $_POST);	    	return;		}				///表单准备		$auth_params = $this -> oauth -> getAuthorizeParams();		$this -> assign("params", $auth_params);		$this->display();	}		public function addclient() {				if ($_POST && isset($_POST["client_id"]) &&		 isset($_POST["client_secret"]) && 		 	isset($_POST["redirect_uri"])) {		 					$this -> oauth -> addClient($_POST["client_id"], $_POST["client_secret"], $_POST["redirect_uri"]);			return;		}				$this->display();	}}

Copy after login

这里我们创建了一个私有的oauth对象并在初始化的时候去init它。

以上的代码在password那个部分没有做验证，第三种模式需要把ThinkOAuth类中的checkUserCredentials方法进行重写。

继续我们写一个受限资源代码。我们这里没有用AOP进行拦截，所以我准备直接用一个基类来模拟拦截。

import("ORG.OAuth.ThinkOAuth2");class BaseAction extends Action {		protected $oauth = NULL;	function _initialize(){				$this -> oauth = new ThinkOAuth2();    }        public function index(){    	        if(!$this -> oauth -> verifyAccessToken()){        	$this -> ajaxReturn(null, 'no,no,no', 0, 'json');        	exit();        }		$this -> ajaxReturn(null, 'oauth-server', 1, 'json');            }    }

Copy after login

?接下来直接用一个UserAction来继承它达到受限的目的，如下：

class UserAction extends BaseAction {	    public function index(){		if(!$this -> oauth -> verifyAccessToken()){        	$this -> ajaxReturn(null, 'no,no,no', 0, 'json');        }		$this -> ajaxReturn(null, 'oauth-server', 1, 'json');            }    }

Copy after login

最后说明一点，为什么要把user_id耦合进OAuth的表呢？因为我们有时候需要从access_token返查user_id，上面的表就能解决这个问题，但其实还有一种方式是在对于access_token生成的时候自动包含user_id再进行加密，在解码的时候从access_token直接取出user_id就可以了。这里关于user_id和密码验证的都没有去实现，需要后期继承ThinkOAuth2类或者修改checkUserCredentials方法才能实现的。?另外这套东西用在REST模式下我认为更好！