feat(sp.slo): 实现了退出单点登录的服务

src/Services/Sp/Slo.php

@@ -9,7 +9,60 @@
 
 namespace Singularity\HyperfSaml\Services\Sp;
 
+use Hyperf\HttpServer\Contract\RequestInterface;
+use Hyperf\HttpServer\Contract\ResponseInterface;
+use Psr\Http\Message\ResponseInterface as PsrResponseInterface;
+use Singularity\HyperfSaml\Services\Base;
+use Teapot\StatusCode\RFC\RFC7231;
+
+/**
+ * 单点退出登录
+ * Singularity\HyperfSaml\Services\Sp\Slo@HyperfSaml
+ *
+ * @author 李东云<dongyun.li@luxcreo.cn>
+ * Powered by PhpStorm
+ * Created on 2022/4/27
+ */
 class Slo
 {
+    public function __construct(
+        private Base $base,
+        private RequestInterface $request,
+        private ResponseInterface $response,
+    ) {
+    }
     
+    /**
+     * 重定向方式退出单点登录
+     *
+     * @param string $uid
+     * @param string $originToken
+     *
+     * @return \Psr\Http\Message\ResponseInterface
+     */
+    public function redirect(string $uid, string $originToken): PsrResponseInterface
+    {
+        $idpId = config('saml.server.idp_logout_url');
+        $issuer = config('saml.client.entity_id');
+        
+        $relayState = $this->request->query('relayState');
+        
+        $url = $this->base->createLogoutRequest(
+            uid: $uid,
+            token: $originToken,
+            idpID: $idpId,
+            issuer: $issuer,
+            relayState: $relayState
+        );
+        
+        return $this->response->redirect($url, RFC7231::FOUND);
+    }
+    
+    /**
+     * 回调方式退出单点登录（IDP 通知 SP)
+     * @return void
+     */
+    public function callback()
+    {
+    }
 }