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PHP搭建OAuth2.0

时间:2015-02-02 00:36:55      阅读:287      评论:0      收藏:0      [点我收藏+]

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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。

废话不多说,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

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;
  }
}

 

 

在这里我们需要创建数据库:

 

SQL代码:
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` timestamp NOT NULL DEFAULT NOW(), 
  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;

 

 

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‘,

 

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:mima@l:3306/database‘

 

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();
	}
}

 

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‘);

    }

}

 

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‘);

    }

}

 

 

 

 

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!

PHP搭建OAuth2.0

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原文地址:http://www.cnblogs.com/hubing/p/4266574.html

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