Add Disqus OAuth to new flows

Summary: Ref T1536. Adds Disqus as a Provider.

Test Plan: Registered and logged in with Disqus.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1536

Differential Revision: https://secure.phabricator.com/D6165

src/__phutil_library_map__.php

@@ -818,6 +818,7 @@ phutil_register_library_map(array(
     'PhabricatorAuthLoginController' => 'applications/auth/controller/PhabricatorAuthLoginController.php',
     'PhabricatorAuthProvider' => 'applications/auth/provider/PhabricatorAuthProvider.php',
     'PhabricatorAuthProviderOAuth' => 'applications/auth/provider/PhabricatorAuthProviderOAuth.php',
+    'PhabricatorAuthProviderOAuthDisqus' => 'applications/auth/provider/PhabricatorAuthProviderOAuthDisqus.php',
     'PhabricatorAuthProviderOAuthFacebook' => 'applications/auth/provider/PhabricatorAuthProviderOAuthFacebook.php',
     'PhabricatorAuthProviderPassword' => 'applications/auth/provider/PhabricatorAuthProviderPassword.php',
     'PhabricatorAuthRegisterController' => 'applications/auth/controller/PhabricatorAuthRegisterController.php',
@@ -2678,6 +2679,7 @@ phutil_register_library_map(array(
     'PhabricatorAuthController' => 'PhabricatorController',
     'PhabricatorAuthLoginController' => 'PhabricatorAuthController',
     'PhabricatorAuthProviderOAuth' => 'PhabricatorAuthProvider',
+    'PhabricatorAuthProviderOAuthDisqus' => 'PhabricatorAuthProviderOAuth',
     'PhabricatorAuthProviderOAuthFacebook' => 'PhabricatorAuthProviderOAuth',
     'PhabricatorAuthProviderPassword' => 'PhabricatorAuthProvider',
     'PhabricatorAuthRegisterController' => 'PhabricatorAuthController',

src/applications/auth/provider/PhabricatorAuthProvider.php

@@ -54,7 +54,12 @@ abstract class PhabricatorAuthProvider {
 
   abstract public function getProviderName();
   abstract public function getAdapter();
-  abstract public function isEnabled();
+
+  public function isEnabled() {
+    // TODO: Remove once we switch to the new auth stuff.
+    return false;
+  }
+
   abstract public function shouldAllowLogin();
   abstract public function shouldAllowRegistration();
   abstract public function shouldAllowAccountLink();
@@ -74,7 +79,7 @@ abstract class PhabricatorAuthProvider {
     return;
   }
 
-  protected function willRegisterAccount(PhabricatorExternalAccount $account) {
+  public function willRegisterAccount(PhabricatorExternalAccount $account) {
     return;
   }
 

src/applications/auth/provider/PhabricatorAuthProviderOAuth.php

@@ -18,12 +18,20 @@ abstract class PhabricatorAuthProviderOAuth extends PhabricatorAuthProvider {
   }
 
   public function isEnabled() {
-    return $this->getOAuthClientID() && $this->getOAuthClientSecret();
+    return parent::isEnabled() &&
+           $this->getOAuthClientID() &&
+           $this->getOAuthClientSecret();
   }
 
   protected function configureAdapter(PhutilAuthAdapterOAuth $adapter) {
+    if ($this->getOAuthClientID()) {
       $adapter->setClientID($this->getOAuthClientID());
+    }
+
+    if ($this->getOAuthClientSecret()) {
       $adapter->setClientSecret($this->getOAuthClientSecret());
+    }
+
     $adapter->setRedirectURI($this->getLoginURI());
     return $adapter;
   }

src/applications/auth/provider/PhabricatorAuthProviderOAuthDisqus.php

@@ -0,0 +1,47 @@
+<?php
+
+final class PhabricatorAuthProviderOAuthDisqus
+  extends PhabricatorAuthProviderOAuth {
+
+  public function getProviderName() {
+    return pht('Disqus');
+  }
+
+  protected function newOAuthAdapter() {
+    return new PhutilAuthAdapterOAuthDisqus();
+  }
+
+  public function isEnabled() {
+    return parent::isEnabled() &&
+           PhabricatorEnv::getEnvConfig('disqus.auth-enabled');
+  }
+
+  protected function getOAuthClientID() {
+    return PhabricatorEnv::getEnvConfig('disqus.application-id');
+  }
+
+  protected function getOAuthClientSecret() {
+    $secret = PhabricatorEnv::getEnvConfig('disqus.application-secret');
+    if ($secret) {
+      return new PhutilOpaqueEnvelope($secret);
+    }
+    return null;
+  }
+
+  public function shouldAllowLogin() {
+    return true;
+  }
+
+  public function shouldAllowRegistration() {
+    return PhabricatorEnv::getEnvConfig('disqus.registration-enabled');
+  }
+
+  public function shouldAllowAccountLink() {
+    return true;
+  }
+
+  public function shouldAllowAccountUnlink() {
+    return !PhabricatorEnv::getEnvConfig('disqus.auth-permanent');
+  }
+
+}

src/applications/auth/provider/PhabricatorAuthProviderPassword.php

@@ -10,8 +10,7 @@ final class PhabricatorAuthProviderPassword
   }
 
   public function isEnabled() {
-    // TODO: Remove this once we switch to the new auth mechanism.
-    return false &&
+    return parent::isEnabled() &&
            PhabricatorEnv::getEnvConfig('auth.password-auth-enabled');
   }