add endSessionEndpoint to configuration to support ending the session

Author: maarten-v

src/OpenIDConfiguration/OpenIDConfiguration.php

@@ -58,6 +58,7 @@ public function __construct(
         public array $idTokenSigningAlgValuesSupported = [],
         public string $userinfoEndpoint = '',
         public array $codeChallengeMethodsSupported = [],
+        public string $endSessionEndpoint = '',
     ) {
     }
 }

src/OpenIDConfiguration/OpenIDConfigurationLoader.php

@@ -91,7 +91,8 @@ protected function getConfigurationFromIssuer(): OpenIDConfiguration
             subjectTypesSupported: $response->json('subject_types_supported', []),
             idTokenSigningAlgValuesSupported: $response->json('id_token_signing_alg_values_supported', []),
             userinfoEndpoint: $response->json('userinfo_endpoint', ''),
-            codeChallengeMethodsSupported: $response->json('code_challenge_methods_supported', [])
+            codeChallengeMethodsSupported: $response->json('code_challenge_methods_supported', []),
+            endSessionEndpoint: $response->json('end_session_endpoint', ''),
         );
     }
 

tests/Feature/Http/Controllers/LoginControllerResponseTest.php

@@ -620,6 +620,7 @@ protected function exampleOpenIDConfiguration(
             idTokenSigningAlgValuesSupported: ["RS256"],
             userinfoEndpoint: "https://provider.example.com/userinfo",
             codeChallengeMethodsSupported: $codeChallengeMethodsSupported,
+            endSessionEndpoint: "https://provider.example.com/endSession",
         );
     }
 

tests/Feature/Http/Controllers/LoginControllerTest.php

@@ -149,6 +149,7 @@ protected function exampleOpenIDConfiguration(): OpenIDConfiguration
             idTokenSigningAlgValuesSupported: ["RS256"],
             userinfoEndpoint: "https://provider.example.com/userinfo",
             codeChallengeMethodsSupported: ["S256"],
+            endSessionEndpoint: "https://provider.example.com/endSession",
         );
     }
 }