Laravel5中集成Jasig cas统一认证系统

CAS ： CAS(Central Authentication Service)是一款不错的针对 Web 应用的单点登录框架，这里介绍下我刚在laravel5上搭建成功的cas。提前准备工作：可运行的laravel5的工程，cas的服务器端已经存在。

环境：Linux（ubuntu）

一，下载phpcas源代码。

在laravel5的项目app目录下创建library目录，下载phpcas库，git clone https://github.com/Jasig/phpCAS.git，clone下来是一个phpcas的文件目录。

二，创建provider

在app下创建目录cas，创建CasAuthProvider.php，内容如下：

<span style="color: #008080;"> 1</span> <span style="color: #000000;">php
</span><span style="color: #008080;"> 2</span> 
<span style="color: #008080;"> 3</span> <span style="color: #000000;">namespace cas;
</span><span style="color: #008080;"> 4</span> 
<span style="color: #008080;"> 5</span> <span style="color: #0000ff;">use</span><span style="color: #000000;"> Illuminate\Contracts\Auth\UserProvider;
</span><span style="color: #008080;"> 6</span> <span style="color: #0000ff;">use</span><span style="color: #000000;"> Illuminate\Contracts\Hashing\Hasher;
</span><span style="color: #008080;"> 7</span> <span style="color: #0000ff;">use</span><span style="color: #000000;"> Illuminate\Contracts\Auth\Authenticatable;
</span><span style="color: #008080;"> 8</span> <span style="color: #0000ff;">use</span><span style="color: #000000;"> Illuminate\Auth\GenericUser;
</span><span style="color: #008080;"> 9</span> 
<span style="color: #008080;">10</span> <span style="color: #0000ff;">class</span> CasAuthProvider <span style="color: #0000ff;">implements</span><span style="color: #000000;"> UserProvider {
</span><span style="color: #008080;">11</span> 
<span style="color: #008080;">12</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">13</span> <span style="color: #008000;">     * Retrieve a user by their unique identifier.
</span><span style="color: #008080;">14</span> <span style="color: #008000;">     *
</span><span style="color: #008080;">15</span> <span style="color: #008000;">     * @param  mixed  $id
</span><span style="color: #008080;">16</span> <span style="color: #008000;">     * @return \Illuminate\Auth\UserInterface|null
</span><span style="color: #008080;">17</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">18</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> retrieveById(<span style="color: #800080;">$id</span><span style="color: #000000;">) {
</span><span style="color: #008080;">19</span>         <span style="color: #0000ff;">return</span> <span style="color: #800080;">$this</span>-><span style="color: #000000;">casUser();
</span><span style="color: #008080;">20</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">21</span> 
<span style="color: #008080;">22</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">23</span> <span style="color: #008000;">     * Retrieve a user by the given credentials.
</span><span style="color: #008080;">24</span> <span style="color: #008000;">     *
</span><span style="color: #008080;">25</span> <span style="color: #008000;">     * @param  array  $credentials
</span><span style="color: #008080;">26</span> <span style="color: #008000;">     * @return \Illuminate\Auth\UserInterface|null
</span><span style="color: #008080;">27</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">28</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> retrieveByCredentials(<span style="color: #0000ff;">array</span> <span style="color: #800080;">$credentials</span><span style="color: #000000;">) {
</span><span style="color: #008080;">29</span>         <span style="color: #0000ff;">return</span> <span style="color: #800080;">$this</span>-><span style="color: #000000;">casUser();
</span><span style="color: #008080;">30</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">31</span> 
<span style="color: #008080;">32</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">33</span> <span style="color: #008000;">     * Validate a user against the given credentials.
</span><span style="color: #008080;">34</span> <span style="color: #008000;">     *
</span><span style="color: #008080;">35</span> <span style="color: #008000;">     * @param  \Illuminate\Auth\UserInterface  $user
</span><span style="color: #008080;">36</span> <span style="color: #008000;">     * @param  array  $credentials
</span><span style="color: #008080;">37</span> <span style="color: #008000;">     * @return bool
</span><span style="color: #008080;">38</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">39</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> validateCredentials(Authenticatable <span style="color: #800080;">$user</span>, <span style="color: #0000ff;">array</span> <span style="color: #800080;">$credentials</span><span style="color: #000000;">) {
</span><span style="color: #008080;">40</span>         <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">true</span><span style="color: #000000;">;
</span><span style="color: #008080;">41</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">42</span> 
<span style="color: #008080;">43</span>     <span style="color: #0000ff;">protected</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> casUser() {
</span><span style="color: #008080;">44</span>         <span style="color: #800080;">$cas_host</span> = \Config::get('app.cas_host'<span style="color: #000000;">);
</span><span style="color: #008080;">45</span>         <span style="color: #008000;">//</span><span style="color: #008000;">dump($cas_host);</span>
<span style="color: #008080;">46</span>         <span style="color: #800080;">$cas_context</span> = \Config::get('app.cas_context'<span style="color: #000000;">);
</span><span style="color: #008080;">47</span>         <span style="color: #800080;">$cas_port</span> = \Config::get('app.cas_port'<span style="color: #000000;">);
</span><span style="color: #008080;">48</span>         \phpCAS::<span style="color: #000000;">setDebug();
</span><span style="color: #008080;">49</span>         \phpCAS::client(CAS_VERSION_2_0, <span style="color: #800080;">$cas_host</span>, <span style="color: #800080;">$cas_port</span>, <span style="color: #800080;">$cas_context</span><span style="color: #000000;">);
</span><span style="color: #008080;">50</span>         \phpCAS::<span style="color: #000000;">setNoCasServerValidation();
</span><span style="color: #008080;">51</span> 
<span style="color: #008080;">52</span>         <span style="color: #0000ff;">if</span> (\phpCAS::<span style="color: #000000;">isAuthenticated()) {
</span><span style="color: #008080;">53</span>             <span style="color: #800080;">$attributes</span> = <span style="color: #0000ff;">array</span><span style="color: #000000;">(
</span><span style="color: #008080;">54</span>                 'id' => \phpCAS::getUser(),
<span style="color: #008080;">55</span>                 'name' => \phpCAS::<span style="color: #000000;">getUser()
</span><span style="color: #008080;">56</span> <span style="color: #000000;">            );
</span><span style="color: #008080;">57</span>             <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">new</span> GenericUser(<span style="color: #800080;">$attributes</span><span style="color: #000000;">);
</span><span style="color: #008080;">58</span>         } <span style="color: #0000ff;">else</span><span style="color: #000000;"> {
</span><span style="color: #008080;">59</span>             <span style="color: #008000;">//</span><span style="color: #008000;">\phpCAS::setServerURL(\Config::get('app.url'));</span>
<span style="color: #008080;">60</span>             \phpCAS::<span style="color: #000000;">forceAuthentication();
</span><span style="color: #008080;">61</span> <span style="color: #000000;">        }
</span><span style="color: #008080;">62</span>         <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">null</span><span style="color: #000000;">;
</span><span style="color: #008080;">63</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">64</span> 
<span style="color: #008080;">65</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">66</span> <span style="color: #008000;">     * Needed by Laravel 4.1.26 and above
</span><span style="color: #008080;">67</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">68</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> retrieveByToken(<span style="color: #800080;">$identifier</span>, <span style="color: #800080;">$token</span><span style="color: #000000;">) {
</span><span style="color: #008080;">69</span>         <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">new</span> \<span style="color: #0000ff;">Exception</span>('not implemented'<span style="color: #000000;">);
</span><span style="color: #008080;">70</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">71</span> 
<span style="color: #008080;">72</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">73</span> <span style="color: #008000;">     * Needed by Laravel 4.1.26 and above
</span><span style="color: #008080;">74</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">75</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span> updateRememberToken(Authenticatable <span style="color: #800080;">$user</span>, <span style="color: #800080;">$token</span><span style="color: #000000;">) {
</span><span style="color: #008080;">76</span>         <span style="color: #0000ff;">return</span> <span style="color: #0000ff;">new</span> \<span style="color: #0000ff;">Exception</span>('not implemented'<span style="color: #000000;">);
</span><span style="color: #008080;">77</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">78</span> 
<span style="color: #008080;">79</span> <span style="color: #000000;">}
</span><span style="color: #008080;">80</span> 
<span style="color: #008080;">81</span> ?>

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三，修改config

在config/app.php中添加如下三个配置项：

    'cas_host'=>'****', //认证服务器
    'cas_context'=>'',//还没弄明白是什么
    'cas_port'=>000,//认证服务端口
    'url'=>'http://localhost/',

四，加载认证库

在app/providers/AppServiceProvider.php里，在类AppServiceProvider的register函数里添加认证方式：

        Auth::extend('cas', function($app) {
            return new CasAuthProvider;
        });

修改app/config/auth.php认证driver：'driver' => 'cas',

在composer.json里配置加载项，在autoload里的classmap中添加如下路径：

    "autoload": {
        "classmap": [
             **************
            "app/library",
            "app/library/phpCAS",
            "app/cas"
        ]

}

在项目根目录下执行：composer dump-autoload

五，实现

在app/http/controllers/下创建CasAuthController.php，添加login和logout方法：

<span style="color: #008080;"> 1</span>  <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> login() {
</span><span style="color: #008080;"> 2</span> 
<span style="color: #008080;"> 3</span>         <span style="color: #800080;">$message_error</span> = ""<span style="color: #000000;">;
</span><span style="color: #008080;"> 4</span>         <span style="color: #0000ff;">if</span> (Auth::<span style="color: #000000;">check()) {
</span><span style="color: #008080;"> 5</span>             
<span style="color: #008080;"> 6</span>         } <span style="color: #0000ff;">else</span><span style="color: #000000;"> {
</span><span style="color: #008080;"> 7</span>             <span style="color: #0000ff;">if</span> (Auth::attempt(<span style="color: #0000ff;">array</span><span style="color: #000000;">())) {
</span><span style="color: #008080;"> 8</span>                 <span style="color: #008000;">//</span><span style="color: #008000;"> Redirect to link after login</span>
<span style="color: #008080;"> 9</span> <span style="color: #000000;">            }
</span><span style="color: #008080;">10</span>             <span style="color: #008000;">//</span><span style="color: #008000;"> Redirect to un-logged in page</span>
<span style="color: #008080;">11</span> <span style="color: #000000;">        }
</span><span style="color: #008080;">12</span>         dump(\phpCAS::<span style="color: #000000;">getUser());
</span><span style="color: #008080;">13</span>         dump(Auth::<span style="color: #000000;">user());
</span><span style="color: #008080;">14</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">15</span> 
<span style="color: #008080;">16</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">function</span><span style="color: #000000;"> logout() {
</span><span style="color: #008080;">17</span> 
<span style="color: #008080;">18</span>         <span style="color: #800080;">$cas_host</span> = \Config::get('app.cas_host'<span style="color: #000000;">);
</span><span style="color: #008080;">19</span>         <span style="color: #008000;">//</span><span style="color: #008000;">dump($cas_host);</span>
<span style="color: #008080;">20</span>         <span style="color: #800080;">$cas_context</span> = \Config::get('app.cas_context'<span style="color: #000000;">);
</span><span style="color: #008080;">21</span>         <span style="color: #800080;">$cas_port</span> = \Config::get('app.cas_port'<span style="color: #000000;">);
</span><span style="color: #008080;">22</span>         \phpCAS::<span style="color: #000000;">setDebug();
</span><span style="color: #008080;">23</span>         \phpCAS::client(CAS_VERSION_2_0, <span style="color: #800080;">$cas_host</span>, <span style="color: #800080;">$cas_port</span>, <span style="color: #800080;">$cas_context</span><span style="color: #000000;">);
</span><span style="color: #008080;">24</span>         \phpCAS::<span style="color: #000000;">setNoCasServerValidation();
</span><span style="color: #008080;">25</span>         \phpCAS::logoutWithRedirectService(\Config::get('app.url'<span style="color: #000000;">));
</span><span style="color: #008080;">26</span>     }

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在routes.php里添加路由规则就OK了，把项目默认的登陆和注销方法指到这里来，当login的时候，会出现服务器的登陆页面。

有个问题，就是这么改动之后，原来我设置的不需要登陆就能浏览的页面，现在进入的时候也会跳出登陆页面，不知道为什么，希望高手指导下，谢谢！

参考：https://sonnguyen.ws/how-to-integrate-phpcas-in-laravel/