Make password enabled configurable via oauth settings

config/config.default.php

@@ -108,6 +108,8 @@ return [
             'hidden' => false,
             // Mark user as arrived when using this provider (optional)
             'mark_arrived' => false,
+            // If the password field should be enabled on registration (optional)
+            'enable_password' => false,
             // Allow registration even if disabled in config (optional)
             'allow_registration' => null,
             // Auto join teams

includes/pages/guest_login.php

@@ -76,6 +76,11 @@ function guest_register()
         }
     }
 
+    $oauth_enable_password = $session->get('oauth2_enable_password');
+    if (!is_null($oauth_enable_password)) {
+        $enable_password = $oauth_enable_password;
+    }
+
     if (
         !auth()->can('register') // No registration permission
         // Not authenticated and

src/Controllers/OAuthController.php

@@ -372,6 +372,7 @@ class OAuthController extends BaseController
                 'email'              => null,
                 'first_name'         => null,
                 'last_name'          => null,
+                'enable_password'    => false,
                 'allow_registration' => null,
                 'groups'             => null,
             ],
@@ -400,6 +401,7 @@ class OAuthController extends BaseController
         $this->session->set('oauth2_access_token', $accessToken->getToken());
         $this->session->set('oauth2_refresh_token', $accessToken->getRefreshToken());
         $this->session->set('oauth2_expires_at', $expirationTime);
+        $this->session->set('oauth2_enable_password', $config['enable_password']);
         $this->session->set('oauth2_allow_registration', $config['allow_registration']);
 
         return $this->redirector->to('/register');

tests/Unit/Controllers/OAuthControllerTest.php

@@ -427,6 +427,7 @@ class OAuthControllerTest extends TestCase
         $this->assertEquals('test-token', $this->session->get('oauth2_access_token'));
         $this->assertEquals('test-refresh-token', $this->session->get('oauth2_refresh_token'));
         $this->assertEquals(4242424242, $this->session->get('oauth2_expires_at')->unix());
+        $this->assertFalse($this->session->get('oauth2_enable_password'));
         $this->assertEquals(null, $this->session->get('oauth2_allow_registration'));
         $this->assertEquals(
             [