config/install/jsonrpc.settings.yml

+basic_auth: TRUE
+cookie: FALSE
+jwt: FALSE
+oauth2: TRUE

config/schema/jsonrpc.schema.yml

+# Schema for the configuration files of the JSON-RPC module.
+jsonrpc.settings:
+  type: config_object
+  label: 'JSON-RPC settings'
+  mapping:
+    basic_auth:
+      type: boolean
+      label: 'Allow access via basic authentication'
+    cookie:
+      type: boolean
+      label: 'Allow access via cookies'
+    jwt:
+      type: boolean
+      label: 'Allow access via JWT'
+    oauth2:
+      type: boolean
+      label: 'Allow access via OAuth 2.0'

jsonrpc.info.yml

 name: JSON-RPC 2.0
 type: module
 description: Infrastructure for JSON-RPC 2.0 compliant web services.
-core_version_requirement: ^9 || ^10 || ^11
+configure: jsonrpc.settings
+core_version_requirement: ^10.2 || ^11
 package: Web services

jsonrpc.install

+<?php
+
+/**
+ * @file
+ * Hook update implementations for the JSON-RPC module.
+ */
+
+declare(strict_types=1);
+
+use Drupal\jsonrpc\Enum\JsonRpcSetting;
+
+/**
+ * Add config for access control to the JSON-RPC module.
+ */
+function jsonrpc_update_2001(): void {
+  $config_factory = \Drupal::configFactory();
+  $config = $config_factory->getEditable('jsonrpc.configuration');
+  $config->set(JsonRpcSetting::BasicAuth->value, TRUE);
+  $config->set(JsonRpcSetting::Cookie->value, FALSE);
+  $config->set(JsonRpcSetting::OAuth2->value, TRUE);
+  $config->save(TRUE);
+}

jsonrpc.permissions.yml

 use jsonrpc services:
   title: 'Use JSON-RPC services.'
+administer jsonrpc:
+  title: 'Administer JSON-RPC.'

jsonrpc.routing.yml

@@ -6,4 +6,12 @@ jsonrpc.handler:
   requirements:
     _permission: 'use jsonrpc services'
   options:
-    _auth: ['basic_auth', 'oauth2']
+    # Allowed authorization methods are set on the module configuration page.
+    _auth: []
+jsonrpc.settings:
+  path: '/admin/config/system/jsonrpc'
+  defaults:
+    _title: 'JSON-RPC'
+    _form: 'Drupal\jsonrpc\Form\JsonRpcConfigurationForm'
+  requirements:
+    _permission: 'administer jsonrpc'

jsonrpc.services.yml

@@ -14,6 +14,11 @@ services:
         '@renderer',
         '@Drupal\jsonrpc\Exception\ErrorHandler',
       ]
+  jsonrpc.route_subscriber:
+    class: Drupal\jsonrpc\Routing\JsonRpcRouteSubscriber
+    arguments: ['@config.factory']
+    tags:
+      - { name: event_subscriber }
   jsonrpc.schema_validator:
     class: JsonSchema\Validator
   jsonrpc.options_request_listener:

modules/jsonrpc_core/jsonrpc_core.info.yml

 name: JSON-RPC 2.0 Core
 type: module
 description: JSON-RPC 2.0 services for Drupal core.
-core_version_requirement: ^9 || ^10 || ^11
+core_version_requirement: ^10.2 || ^11
 package: Web services
 dependencies:
   - jsonrpc:jsonrpc

modules/jsonrpc_core/tests/src/Functional/MaintenanceModeEnabledTest.php

@@ -5,10 +5,13 @@ declare(strict_types=1);
 namespace Drupal\Tests\jsonrpc_core\Functional;
 
 use Drupal\Component\Serialization\Json;
+use Drupal\Core\Url;
 use Drupal\Tests\jsonrpc\Functional\JsonRpcTestBase;
+use Drupal\jsonrpc\Enum\JsonRpcSetting;
+use GuzzleHttp\RequestOptions;
 
 /**
- * Test turning the maintenance mode on or off using JSON RPC.
+ * Test turning the maintenance mode on or off using JSON-RPC.
  *
  * @group jsonrpc
  */
@@ -25,30 +28,48 @@ class MaintenanceModeEnabledTest extends JsonRpcTestBase {
   ];
 
   /**
-   * Tests enabling the maintenance mode.
+   * The POST request to enable maintenance mode.
+   *
+   * @var array
    */
-  public function testEnablingMaintenanceMode(): void {
+  protected array $enableRequest = [
+    'jsonrpc' => '2.0',
+    'method' => 'maintenance_mode.isEnabled',
+    'params' => [
+      'enabled' => TRUE,
+    ],
+    'id' => 'maintenance_mode_enabled',
+  ];
 
-    $enabled_request = [
-      'jsonrpc' => '2.0',
-      'method' => 'maintenance_mode.isEnabled',
-      'params' => [
-        'enabled' => TRUE,
-      ],
-      'id' => 'maintenance_mode_enabled',
-    ];
+  /**
+   * The POST request to disabled maintenance mode.
+   *
+   * @var array
+   */
+  protected array $disableRequest = [
+    'jsonrpc' => '2.0',
+    'method' => 'maintenance_mode.isEnabled',
+    'params' => [
+      'enabled' => FALSE,
+    ],
+    'id' => 'maintenance_mode_disabled',
+  ];
 
+  /**
+   * Tests enabling maintenance mode.
+   *
+   * @param \Drupal\jsonrpc\Enum\JsonRpcSetting $auth_method
+   *   The auth method to use for the test.
+   */
+  private function enableMaintenanceModeTestFlow(JsonRpcSetting $auth_method): void {
     // Assert that anonymous users are not able to enable the maintenance page.
-    $response = $this->postRpc($enabled_request);
-    $this->assertSame(401, $response->getStatusCode());
-
-    // Assign correct permission and login.
-    $account = $this->createUser(['administer site configuration'], NULL, TRUE);
+    $anon_response = $this->postRpc($this->enableRequest);
+    $this->assertSame(401, $anon_response->getStatusCode());
 
-    // Retry request with basic auth.
-    $response = $this->postRpc($enabled_request, $account);
-    $this->assertSame(200, $response->getStatusCode());
-    $parsed_body = Json::decode($response->getBody());
+    // Retry request with auth.
+    $auth_response = $this->postRpc($this->enableRequest, $this->adminUser, $auth_method);
+    $this->assertSame(200, $auth_response->getStatusCode());
+    $parsed_body = Json::decode($auth_response->getBody());
     $expected = [
       'jsonrpc' => '2.0',
       'id' => 'maintenance_mode_enabled',
@@ -57,22 +78,17 @@ class MaintenanceModeEnabledTest extends JsonRpcTestBase {
     $this->assertEquals($expected, $parsed_body);
 
     // Assert maintenance mode is enabled.
+    // If using cookie auth, we need to log out first because we are an admin.
+    if ($auth_method === JsonRpcSetting::Cookie) {
+      $this->drupalLogout();
+    }
     $this->drupalGet('/jsonrpc');
     $this->assertEquals('Site under maintenance', $this->cssSelect('main h1')[0]->getText());
 
     // Send request to disable maintenance mode.
-    $disabled_request = [
-      'jsonrpc' => '2.0',
-      'method' => 'maintenance_mode.isEnabled',
-      'params' => [
-        'enabled' => FALSE,
-      ],
-      'id' => 'maintenance_mode_disabled',
-    ];
-
-    $response = $this->postRpc($disabled_request, $account);
-    $this->assertSame(200, $response->getStatusCode());
-    $parsed_body = Json::decode($response->getBody());
+    $disabled_response = $this->postRpc($this->disableRequest, $this->adminUser, $auth_method);
+    $this->assertSame(200, $disabled_response->getStatusCode());
+    $parsed_body = Json::decode($disabled_response->getBody());
     $expected = [
       'jsonrpc' => '2.0',
       'id' => 'maintenance_mode_disabled',
@@ -81,8 +97,52 @@ class MaintenanceModeEnabledTest extends JsonRpcTestBase {
     $this->assertEquals($expected, $parsed_body);
 
     // Assert maintenance mode is disabled.
+    // If using cookie auth, we need to log out first because we are an admin.
+    if ($auth_method === JsonRpcSetting::Cookie) {
+      $this->drupalLogout();
+    }
     $this->drupalGet('/jsonrpc');
     $this->assertNotEquals('Site under maintenance', $this->cssSelect('main h1')[0]->getText());
   }
 
+  /**
+   * Tests enabling maintenance mode with basic auth.
+   */
+  public function testEnablingMaintenanceModeBasicAuth(): void {
+    $this->enableBasicAuth();
+    $this->enableMaintenanceModeTestFlow(JsonRpcSetting::BasicAuth);
+  }
+
+  /**
+   * Tests enabling maintenance mode with cookie auth.
+   */
+  public function testEnablingMaintenanceModeCookie(): void {
+    $this->enableCookieAuth();
+    $this->enableMaintenanceModeTestFlow(JsonRpcSetting::Cookie);
+  }
+
+  /**
+   * Tests that enabling maintenance mode by cookie requires a CSRF token.
+   */
+  public function testEnablingMaintenanceModeCookieNoCsrfToken(): void {
+    $this->enableCookieAuth();
+
+    $url = $this->buildUrl(Url::fromRoute('jsonrpc.handler'));
+    $request_options = [
+      RequestOptions::HTTP_ERRORS => FALSE,
+      RequestOptions::ALLOW_REDIRECTS => FALSE,
+      RequestOptions::JSON => $this->enableRequest,
+    ];
+
+    // For cookies, we need to log in get the cookie.
+    $this->drupalLogin($this->adminUser);
+    // Include cookies, but do not include a CSRF token.
+    $request_options[RequestOptions::COOKIES] = $this->getSessionCookies();
+
+    $client = $this->getHttpClient();
+    $no_csrf_token_response = $client->request('POST', $url, $request_options);
+
+    $this->assertSame(403, $no_csrf_token_response->getStatusCode());
+  }
+
 }

modules/jsonrpc_core/tests/src/Functional/PluginsTest.php

@@ -6,6 +6,7 @@ namespace Drupal\Tests\jsonrpc_core\Functional;
 
 use Drupal\Component\Serialization\Json;
 use Drupal\Tests\jsonrpc\Functional\JsonRpcTestBase;
+use Drupal\jsonrpc\Enum\JsonRpcSetting;
 
 /**
  * Test turning the maintenance mode on or off using JSON RPC.
@@ -27,8 +28,11 @@ class PluginsTest extends JsonRpcTestBase {
 
   /**
    * Tests the plugin list.
+   *
+   * @param \Drupal\jsonrpc\Enum\JsonRpcSetting $auth_method
+   *   The auth method to use for the test.
    */
-  public function testPlugins(): void {
+  public function pluginTestFlow(JsonRpcSetting $auth_method): void {
     // 1. Test without a pager.
     $rpc_request = [
       'jsonrpc' => '2.0',
@@ -43,11 +47,8 @@ class PluginsTest extends JsonRpcTestBase {
     $response = $this->getRpc($rpc_request);
     $this->assertSame(401, $response->getStatusCode());
 
-    // Assign correct permission and login.
-    $account = $this->createUser(['administer site configuration'], NULL, TRUE);
-
     // Retry request with auth.
-    $response = $this->getRpc($rpc_request, $account);
+    $response = $this->getRpc($rpc_request, $this->adminUser, $auth_method);
     $this->assertSame(200, $response->getStatusCode());
     $parsed_body = Json::decode($response->getBody());
     $this->assertArrayHasKey('result', $parsed_body, 'Could not find results');
@@ -64,7 +65,7 @@ class PluginsTest extends JsonRpcTestBase {
         'page' => ['limit' => 2, 'offset' => 1],
       ],
     ];
-    $response = $this->getRpc($rpc_request, $account);
+    $response = $this->getRpc($rpc_request, $this->adminUser, $auth_method);
     $this->assertSame(200, $response->getStatusCode());
     $parsed_body = Json::decode($response->getBody());
     $this->assertCount(2, $parsed_body['result']);
@@ -79,7 +80,7 @@ class PluginsTest extends JsonRpcTestBase {
         'page' => ['limit' => 2, 'offset' => 1],
       ],
     ];
-    $response = $this->getRpc($rpc_request, $account);
+    $response = $this->getRpc($rpc_request, $this->adminUser, $auth_method);
     $this->assertSame(400, $response->getStatusCode());
     $parsed_body = Json::decode($response->getBody());
     $expected = [
@@ -94,4 +95,20 @@ class PluginsTest extends JsonRpcTestBase {
     $this->assertEquals($expected, $parsed_body);
   }
 
+  /**
+   * Tests the plugin list with basic auth.
+   */
+  public function testPluginListBasicAuth(): void {
+    $this->enableBasicAuth();
+    $this->pluginTestFlow(JsonRpcSetting::BasicAuth);
+  }
+
+  /**
+   * Tests the plugin list with cookie auth.
+   */
+  public function testPluginListCookie(): void {
+    $this->enableCookieAuth();
+    $this->pluginTestFlow(JsonRpcSetting::Cookie);
+  }
+
 }

modules/jsonrpc_discovery/jsonrpc_discovery.info.yml

 name: JSON-RPC 2.0 Discovery
 type: module
 description: JSON-RPC 2.0 discovery features.
-core_version_requirement: ^8 || ^9 || ^10 || ^11
+core_version_requirement: ^10.2 || ^11
 package: Web services
 dependencies:
   - drupal:serialization

modules/jsonrpc_discovery/tests/src/Functional/JsonRpcDiscoveryBasicAuthTest.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\jsonrpc\Functional;
+
+use Drupal\Tests\jsonrpc_discovery\Functional\JsonRpcDiscoveryFunctionalTestBase;
+
+/**
+ * Tests the configuration for basic_auth.
+ *
+ * @group jsonrpc
+ */
+class JsonRpcDiscoveryBasicAuthTest extends JsonRpcDiscoveryFunctionalTestBase {
+
+  /**
+   * Tests getting the methods as an anonymous user with basic auth.
+   */
+  public function testBasicAuthAnon(): void {
+    $this->enableBasicAuth();
+    // Anon does not have access to JSON-RPC services.
+    $method_url = $this->getMethodsUrl();
+
+    try {
+      $this->getJsonRpcMethod($method_url);
+    }
+    catch (\Exception $e) {
+      $this->assertStringContainsString('401 Unauthorized', $e->getMessage());
+    }
+  }
+
+  /**
+   * Tests getting the methods as an auth user with basic auth.
+   */
+  public function testBasicAuthAuth(): void {
+    $this->enableBasicAuth();
+    $method_url = $this->getMethodsUrl();
+    $auth_response = $this->getJsonRpcMethod($method_url, $this->user);
+    $this->assertEquals(200, $auth_response->getStatusCode());
+
+    $this->disableBasicAuth();
+    try {
+      $this->getJsonRpcMethod($method_url, $this->user);
+    }
+    catch (\Exception $e) {
+      $this->assertStringContainsString('403', $e->getMessage());
+    }
+  }
+
+  /**
+   * Tests getting the methods as an admin user with basic auth.
+   */
+  public function testBasicAuthAdmin(): void {
+    $this->enableBasicAuth();
+    $method_url = $this->getMethodsUrl();
+    $admin_response = $this->getJsonRpcMethod($method_url, $this->adminUser);
+    $this->assertEquals(200, $admin_response->getStatusCode());
+
+    $this->disableBasicAuth();
+    try {
+      $this->getJsonRpcMethod($method_url, $this->adminUser);
+    }
+    catch (\Exception $e) {
+      $this->assertStringContainsString('403', $e->getMessage());
+    }
+  }
+
+}

modules/jsonrpc_discovery/tests/src/Functional/JsonRpcDiscoveryCookieAuthTest.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\jsonrpc\Functional;
+
+use Drupal\Tests\jsonrpc_discovery\Functional\JsonRpcDiscoveryFunctionalTestBase;
+use Drupal\user\UserInterface;
+use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Tests the configuration for cookie auth.
+ *
+ * @group jsonrpc
+ */
+class JsonRpcDiscoveryCookieAuthTest extends JsonRpcDiscoveryFunctionalTestBase {
+
+  /**
+   * Sends a GET request to a JSON-RPC method.
+   *
+   * @param string $method_url
+   *   The URL of the JSON-RPC method.
+   * @param \Drupal\user\UserInterface|null $user
+   *   The user interface of the user account. For anon, use null.
+   *
+   * @return \Psr\Http\Message\ResponseInterface
+   *   The response from the JSON-RPC method.
+   *
+   * @throws \GuzzleHttp\Exception\GuzzleException
+   */
+  #[\Override]
+  protected function getJsonRpcMethod(string $method_url, ?UserInterface $user = NULL): ResponseInterface {
+    $request_options = [
+      RequestOptions::BODY => NULL,
+      RequestOptions::HEADERS => [],
+    ];
+    if ($user instanceof UserInterface) {
+      $request_options[RequestOptions::COOKIES] = $this->getSessionCookies();
+    }
+    return \Drupal::httpClient()->get($method_url, $request_options);
+  }
+
+  /**
+   * Tests getting the methods as an anonymous user with cookie auth.
+   */
+  public function testCookieAnon(): void {
+    $this->enableCookieAuth();
+    // Anon does not have access to JSON-RPC services.
+    $method_url = $this->getMethodsUrl();
+    try {
+      $this->getJsonRpcMethod($method_url);
+    }
+    catch (\Exception $e) {
+      $this->assertStringContainsString('401 Unauthorized', $e->getMessage());
+    }
+  }
+
+  /**
+   * Tests getting the methods as an auth user with cookie auth.
+   */
+  public function testCookieAuth(): void {
+    $this->enableCookieAuth();
+    $this->drupalLogin($this->user);
+    $method_url = $this->getMethodsUrl();
+    $auth_response = $this->getJsonRpcMethod($method_url, $this->user);
+    $this->assertEquals(200, $auth_response->getStatusCode());
+
+    $this->disableCookieAuth();
+    try {
+      $this->getJsonRpcMethod($method_url, $this->user);
+    }
+    catch (\Exception $e) {
+      $this->assertStringContainsString('403', $e->getMessage());
+    }
+  }
+
+  /**
+   * Tests getting the methods as an admin user with cookie auth.
+   */
+  public function testCookieAdmin(): void {
+    $this->enableCookieAuth();
+    $this->drupalLogin($this->adminUser);
+    $method_url = $this->getMethodsUrl();
+    $admin_response = $this->getJsonRpcMethod($method_url, $this->adminUser);
+    $this->assertEquals(200, $admin_response->getStatusCode());
+
+    $this->disableCookieAuth();
+    try {
+      $this->getJsonRpcMethod($method_url, $this->adminUser);
+    }
+    catch (\Exception $e) {
+      $this->assertStringContainsString('403', $e->getMessage());
+    }
+  }
+
+}

modules/jsonrpc_discovery/tests/src/Functional/JsonRpcDiscoveryFunctionalTestBase.php

@@ -4,17 +4,18 @@ declare(strict_types=1);
 
 namespace Drupal\Tests\jsonrpc_discovery\Functional;
 
-use Drupal\Tests\BrowserTestBase;
-use Drupal\user\Entity\Role;
-use Drupal\user\RoleInterface;
+use Drupal\Core\Url;
+use Drupal\Tests\jsonrpc\Functional\JsonRpcTestBase;
 use Drupal\user\UserInterface;
+use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\ResponseInterface;
 
 /**
  * This class provides methods specifically for testing something.
  *
  * @group jsonrpc
  */
-abstract class JsonRpcDiscoveryFunctionalTestBase extends BrowserTestBase {
+abstract class JsonRpcDiscoveryFunctionalTestBase extends JsonRpcTestBase {
 
   /**
    * {@inheritdoc}
@@ -27,40 +28,59 @@ abstract class JsonRpcDiscoveryFunctionalTestBase extends BrowserTestBase {
   ];
 
   /**
-   * A user with authenticated permissions.
-   *
-   * @var \Drupal\user\UserInterface
+   * {@inheritdoc}
    */
-  protected UserInterface $user;
+  protected $defaultTheme = 'stark';
 
   /**
-   * A user with admin permissions.
+   * Executes a request to jsonrpc/methods.
    *
-   * @var \Drupal\user\UserInterface
+   * @return string
+   *   The absolute url.
    */
-  protected UserInterface $adminUser;
+  protected function getMethodsUrl(): string {
+    return Url::fromRoute('jsonrpc.method_collection')
+      ->setAbsolute()->toString();
+  }
 
   /**
-   * {@inheritdoc}
+   * Provides a basic auth header.
+   *
+   * @param \Drupal\user\UserInterface $user
+   *   The user account.
+   *
+   * @return string
+   *   The basic auth header value formatted for Guzzle.
    */
-  protected $defaultTheme = 'stark';
+  private function getAuthForUser(UserInterface $user): string {
+    $name = $user->getAccountName();
+    $pass = $user->passRaw;
+    return 'Basic ' . base64_encode($name . ':' . $pass);
+  }
 
   /**
-   * {@inheritdoc}
+   * Sends a GET request to a JSON-RPC method.
+   *
+   * @param string $method_url
+   *   The URL of the JSON-RPC method.
+   * @param \Drupal\user\UserInterface|null $user
+   *   The user interface of the user account. For anon, use null.
+   *
+   * @return \Psr\Http\Message\ResponseInterface
+   *   The response from the JSON-RPC method.
+   *
+   * @throws \GuzzleHttp\Exception\GuzzleException
    */
-  #[\Override]
-  protected function setUp(): void {
-    parent::setUp();
-
-    // Grant authorized users permission to use JSON-RPC.
-    $auth_role = Role::load(RoleInterface::AUTHENTICATED_ID);
-    $this->grantPermissions($auth_role, ['use jsonrpc services']);
-
-    $this->user = $this->drupalCreateUser([], 'user', FALSE, ['mail' => 'user@example.com']);
-
-    $this->adminUser = $this->drupalCreateUser([], 'adminUser', TRUE, ['mail' => 'admin@example.com']);
+  protected function getJsonRpcMethod(string $method_url, ?UserInterface $user = NULL): ResponseInterface {
+    $request_options = [
+      RequestOptions::BODY => NULL,
+      RequestOptions::HEADERS => [],
+    ];
 
-    $this->adminUser->save();
+    if ($user instanceof UserInterface) {
+      $request_options[RequestOptions::HEADERS]['Authorization'] = $this->getAuthForUser($user);
+    }
+    return \Drupal::httpClient()->get($method_url, $request_options);
   }
 
 }

modules/jsonrpc_discovery/tests/src/Functional/JsonRpcDiscoveryHttpTest.php

@@ -4,9 +4,7 @@ declare(strict_types=1);
 
 namespace Drupal\Tests\jsonrpc\Functional;
 
-use Drupal\Core\Url;
 use Drupal\Tests\jsonrpc_discovery\Functional\JsonRpcDiscoveryFunctionalTestBase;
-use Drupal\user\UserInterface;
 use Psr\Http\Message\ResponseInterface;
 
 /**
@@ -17,32 +15,6 @@ use Psr\Http\Message\ResponseInterface;
 class JsonRpcDiscoveryHttpTest extends JsonRpcDiscoveryFunctionalTestBase {
   const PLUGINS_METHOD_NAME = 'List defined plugins';
 
-  /**
-   * Executes a request to jsonrpc/methods.
-   *
-   * @return string
-   *   The absolute url.
-   */
-  protected function getMethodsUrl(): string {
-    return Url::fromRoute('jsonrpc.method_collection')
-      ->setAbsolute()->toString();
-  }
-
-  /**
-   * Provides a basic auth header.
-   *
-   * @param \Drupal\user\UserInterface $user
-   *   The user account.
-   *
-   * @return string
-   *   The basic auth header value formatted for Guzzle.
-   */
-  protected function getAuthForUser(UserInterface $user): string {
-    $name = $user->getAccountName();
-    $pass = $user->passRaw;
-    return 'Basic ' . base64_encode($name . ':' . $pass);
-  }
-
   /**
    * Gets the JSON-RPC result from the response.
    *
@@ -65,10 +37,7 @@ class JsonRpcDiscoveryHttpTest extends JsonRpcDiscoveryFunctionalTestBase {
     // Anon does not have access to JSON-RPC services.
     $method_url = $this->getMethodsUrl();
     try {
-      \Drupal::httpClient()->get($method_url, [
-        'body' => NULL,
-        'headers' => [],
-      ]);
+      $this->getJsonRpcMethod($method_url);
     }
     catch (\Exception $e) {
       $this->assertStringContainsString('401 Unauthorized', $e->getMessage());
@@ -84,12 +53,7 @@ class JsonRpcDiscoveryHttpTest extends JsonRpcDiscoveryFunctionalTestBase {
     $this->assertFalse($has_plugins_method_permission, 'User account has "administer site configuration" permission to access the Plugins JSON-RPC method, but it should not have this permission.');
 
     $method_url = $this->getMethodsUrl();
-    $auth_response = \Drupal::httpClient()->get($method_url, [
-      'body' => NULL,
-      'headers' => [
-        'Authorization' => $this->getAuthForUser($this->user),
-      ],
-    ]);
+    $auth_response = $this->getJsonRpcMethod($method_url, $this->user);
     $this->assertEquals(200, $auth_response->getStatusCode());
     // Auth does not have access to the plugins method.
     $this->assertStringNotContainsString(self::PLUGINS_METHOD_NAME, $this->getJsonRpcResultFromResponse($auth_response));
@@ -104,12 +68,7 @@ class JsonRpcDiscoveryHttpTest extends JsonRpcDiscoveryFunctionalTestBase {
     $this->assertTrue($has_plugins_method_permission, 'Admin account does not have permission to access the Plugins JSON-RPC method.');
 
     $method_url = $this->getMethodsUrl();
-    $admin_response = \Drupal::httpClient()->get($method_url, [
-      'body' => NULL,
-      'headers' => [
-        'Authorization' => $this->getAuthForUser($this->adminUser),
-      ],
-    ]);
+    $admin_response = $this->getJsonRpcMethod($method_url, $this->adminUser);
     $this->assertEquals(200, $admin_response->getStatusCode());
     // Admin does have access to the plugins method.
     $this->assertStringContainsString(self::PLUGINS_METHOD_NAME, $this->getJsonRpcResultFromResponse($admin_response));
@@ -124,12 +83,7 @@ class JsonRpcDiscoveryHttpTest extends JsonRpcDiscoveryFunctionalTestBase {
     $this->assertTrue($has_plugins_method_permission, 'Admin account does not have permission to access the Plugins JSON-RPC method.');
 
     $method_url = $this->getMethodsUrl() . '/plugins.list';
-    $admin_response = \Drupal::httpClient()->get($method_url, [
-      'body' => NULL,
-      'headers' => [
-        'Authorization' => $this->getAuthForUser($this->adminUser),
-      ],
-    ]);
+    $admin_response = $this->getJsonRpcMethod($method_url, $this->adminUser);
     $this->assertEquals(200, $admin_response->getStatusCode());
     $this->assertStringContainsString(self::PLUGINS_METHOD_NAME, $this->getJsonRpcResultFromResponse($admin_response));
   }

src/Annotation/JsonRpcMethod.php

@@ -88,7 +88,7 @@ class JsonRpcMethod extends AnnotationBase implements MethodInterface {
    */
   #[\Override]
   public function call(): string {
-    if (!isset($this->call)) {
+    if ($this->call === NULL) {
       $this->call = 'execute';
     }
     return $this->call;

src/Drush/Generators/JsonRpcMethodGenerator.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\jsonrpc\Drush\Generators;
+
+use DrupalCodeGenerator\Asset\AssetCollection as Assets;
+use DrupalCodeGenerator\Attribute\Generator;
+use DrupalCodeGenerator\Command\BaseGenerator;
+use DrupalCodeGenerator\GeneratorType;
+
+/**
+ * Generates a JSON-RPC plugin.
+ */
+#[Generator(
+  name: 'jsonrpc:method',
+  description: 'Creates a new JSON-RPC method.',
+  templatePath: __DIR__,
+  type: GeneratorType::MODULE_COMPONENT,
+)]
+final class JsonRpcMethodGenerator extends BaseGenerator {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function generate(array &$vars, Assets $assets): void {
+    $ir = $this->createInterviewer($vars);
+
+    $vars['machine_name'] = $ir->askMachineName();
+    $vars['name'] = $ir->askName();
+    $vars['class'] = $ir->askClass(default: '');
+    $vars['id'] = $ir->ask('What should we use for the JSON-RPC ID? (This will be used as the name of the method when calling the JSON-RPC endpoint.', '');
+    $vars['description'] = $ir->ask('Description: What does this method do?', '');
+    $vars['access'] = $ir->ask('Which permission to set for access control for this method?', 'administer site configuration');
+
+    $assets->addFile('src/Plugin/jsonrpc/Method/{class}.php', 'method.twig');
+  }
+
+}

src/Drush/Generators/method.twig

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\{{ method_machine_name }}\Plugin\jsonrpc\Method;
+
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\jsonrpc\Attribute\JsonRpcMethod;
+use Drupal\jsonrpc\Attribute\JsonRpcParameterDefinition;
+use Drupal\jsonrpc\Plugin\JsonRpcMethodBase;
+
+/**
+ * {{ description }}
+ */
+#[JsonRpcMethod(
+  id: "{{ id }}",
+  usage: new TranslatableMarkup("{{ description }}"),
+  access: ["{{ permission }}"],
+)]
+class {{ class }} extends JsonRpcMethodBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function execute(ParameterBag $params) {
+    // @todo Add code to execute when the method is called.
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function outputSchema(): null {
+    // @todo Provide the schema that describes the results of the RPC method.
+    return NULL;
+  }
+
+}

src/Enum/JsonRpcSetting.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\jsonrpc\Enum;
+
+/**
+ * Settings values for the JSON-RPC module.
+ */
+enum JsonRpcSetting: string {
+  case BasicAuth = 'basic_auth';
+  case Cookie = 'cookie';
+  case JWT = 'jwt_auth';
+  case OAuth2 = 'oauth2';
+}

src/Form/JsonRpcConfigurationForm.php

+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\jsonrpc\Form;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Config\TypedConfigManagerInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Form\ConfigFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Routing\RouteBuilderInterface;
+use Drupal\jsonrpc\Enum\JsonRpcSetting;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Configures the JSON-RPC module.
+ */
+final class JsonRpcConfigurationForm extends ConfigFormBase {
+
+  public function __construct(
+    ConfigFactoryInterface $config_factory,
+    TypedConfigManagerInterface $typed_config_manager,
+    protected ModuleHandlerInterface $moduleHandler,
+    protected RouteBuilderInterface $routeBuilder,
+  ) {
+    parent::__construct($config_factory, $typed_config_manager);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  #[\Override]
+  public static function create(ContainerInterface $container): JsonRpcConfigurationForm {
+    return new self(
+      $container->get('config.factory'),
+      $container->get('config.typed'),
+      $container->get('module_handler'),
+      $container->get('router.builder')
+    );
+  }
+
+  const string FORM_ID = 'jsonrpc.settings';
+
+  /**
+   * {@inheritdoc}
+   */
+  #[\Override]
+  public function getFormId(): string {
+    return self::FORM_ID;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  #[\Override]
+  protected function getEditableConfigNames(): array {
+    return [self::FORM_ID];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  #[\Override]
+  public function buildForm(array $form, FormStateInterface $form_state): array {
+    $config = $this->config(self::FORM_ID);
+
+    $form[self::FORM_ID] = [
+      '#type' => 'details',
+      '#title' => $this->t('Configure JSON-RPC access'),
+      '#open' => TRUE,
+    ];
+
+    $form[self::FORM_ID][JsonRpcSetting::BasicAuth->value] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Allow access via basic authentication'),
+      '#default_value' => $config->get(JsonRpcSetting::BasicAuth->value),
+      '#required' => FALSE,
+    ];
+
+    $form[self::FORM_ID][JsonRpcSetting::Cookie->value] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Allow access via cookies'),
+      '#default_value' => $config->get(JsonRpcSetting::Cookie->value),
+      '#required' => FALSE,
+    ];
+
+    $form[self::FORM_ID][JsonRpcSetting::JWT->value] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Allow access via JWT'),
+      '#default_value' => $config->get(JsonRpcSetting::JWT->value),
+      '#required' => FALSE,
+    ];
+
+    $form[self::FORM_ID][JsonRpcSetting::OAuth2->value] = [
+      '#type' => 'checkbox',
+      '#title' => $this->t('Allow access via basic authentication'),
+      '#default_value' => $config->get(JsonRpcSetting::OAuth2->value),
+      '#required' => FALSE,
+    ];
+
+    return parent::buildForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  #[\Override]
+  public function submitForm(array &$form, FormStateInterface $form_state): void {
+    $config = $this->config(self::FORM_ID);
+    $config
+      ->set(JsonRpcSetting::BasicAuth->value, boolval($form_state->getValue(JsonRpcSetting::BasicAuth->value)))
+      ->set(JsonRpcSetting::Cookie->value, boolval($form_state->getValue(JsonRpcSetting::Cookie->value)))
+      ->set(JsonRpcSetting::JWT->value, boolval($form_state->getValue(JsonRpcSetting::JWT->value)))
+      ->set(JsonRpcSetting::OAuth2->value, boolval($form_state->getValue(JsonRpcSetting::OAuth2->value)))
+      ->save();
+
+    // Altering routes requires us to rebuild the routing table.
+    $this->routeBuilder->setRebuildNeeded();
+
+    parent::submitForm($form, $form_state);
+  }
+
+}