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。
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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。
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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:
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/Extend/Library/ORG/OAuth/OAuth2.class.php
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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:
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<?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;
}
}
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?在这里我们需要创建数据库:
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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;
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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:
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'OAUTH2_CODES_TABLE'=>'oauth_code', 'OAUTH2_CLIENTS_TABLE'=>'oauth_client', 'OAUTH2_TOKEN_TABLE'=>'oauth_token',
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如果OAuth的服务器不是当前服务器,那就要指定下DSN地址了:
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'OAUTH2_DB_DSN'=>'mysql://root:mima@l:3306/database'
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好了,大致的核心库代码就是如此。接下来要使用它
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我们创建一个OAuth的Action负责OAuth2的一些验证(OauthAction.class.php)
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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。
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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。
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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。
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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();
}
$this -> ajaxReturn(null, 'oauth-server', 1, 'json');
}
}?
?接下来直接用一个UserAction来继承它达到受限的目的,如下:
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class UserAction extends BaseAction {
public function index(){
if(!$this -> oauth -> verifyAccessToken()){
$this -> ajaxReturn(null, 'no,no,no', 0, 'json');
}
$this -> ajaxReturn(null, 'oauth-server', 1, 'json');
}
}?
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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!
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