WordPress.com OAuth2 plugin

Summary:
This plugin provides an OAuth authentication provider to authenticate users using WordPress.com Connect.

This diff corresponds to github pull request https://github.com/facebook/phabricator/pull/593/ and had its libphutil counterpart reviewed in D9004.

Test Plan: Configured WordPress.com as an authentication provider, saw it show up on the login screen, registered a new account, got expected defaults for my username/name/email/profile picture.

Reviewers: chad, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9019

resources/sprite/manifest/login.json

@@ -86,6 +86,11 @@
       "rule" : ".login-Twitter",
       "hash" : "0b64983507a720b365474b778a966bab"
     },
+    "login-WordPressCOM" : {
+      "name" : "login-WordPressCOM",
+      "rule" : ".login-WordPressCOM",
+      "hash" : "c22a183bfb1e46deeab864223ec48db9"
+    },
     "login-Yahoo"        : {
       "name" : "login-Yahoo",
       "rule" : ".login-Yahoo",

src/__phutil_library_map__.php

@@ -1254,6 +1254,7 @@ phutil_register_library_map(array(
     'PhabricatorAuthProviderOAuthGitHub' => 'applications/auth/provider/PhabricatorAuthProviderOAuthGitHub.php',
     'PhabricatorAuthProviderOAuthGoogle' => 'applications/auth/provider/PhabricatorAuthProviderOAuthGoogle.php',
     'PhabricatorAuthProviderOAuthTwitch' => 'applications/auth/provider/PhabricatorAuthProviderOAuthTwitch.php',
+    'PhabricatorAuthProviderOAuthWordPress' => 'applications/auth/provider/PhabricatorAuthProviderOAuthWordPress.php',
     'PhabricatorAuthProviderPassword' => 'applications/auth/provider/PhabricatorAuthProviderPassword.php',
     'PhabricatorAuthProviderPersona' => 'applications/auth/provider/PhabricatorAuthProviderPersona.php',
     'PhabricatorAuthRegisterController' => 'applications/auth/controller/PhabricatorAuthRegisterController.php',
@@ -4041,6 +4042,7 @@ phutil_register_library_map(array(
     'PhabricatorAuthProviderOAuthGitHub' => 'PhabricatorAuthProviderOAuth2',
     'PhabricatorAuthProviderOAuthGoogle' => 'PhabricatorAuthProviderOAuth2',
     'PhabricatorAuthProviderOAuthTwitch' => 'PhabricatorAuthProviderOAuth2',
+    'PhabricatorAuthProviderOAuthWordPress' => 'PhabricatorAuthProviderOAuth2',
     'PhabricatorAuthProviderPassword' => 'PhabricatorAuthProvider',
     'PhabricatorAuthProviderPersona' => 'PhabricatorAuthProvider',
     'PhabricatorAuthRegisterController' => 'PhabricatorAuthController',

src/applications/auth/provider/PhabricatorAuthProviderOAuthWordPress.php

@@ -0,0 +1,38 @@
+<?php
+
+final class PhabricatorAuthProviderOAuthWordPress
+  extends PhabricatorAuthProviderOAuth2 {
+
+  public function getProviderName() {
+    return pht('WordPress.com');
+  }
+
+  protected function getProviderConfigurationHelp() {
+    $uri = PhabricatorEnv::getProductionURI('/');
+    $callback_uri = PhabricatorEnv::getURI($this->getLoginURI());
+
+    return pht(
+      "To configure WordPress.com OAuth, create a new WordPress.com ".
+      "Application here:\n\n".
+      "https://developer.wordpress.com/apps/new/.".
+      "\n\n".
+      "You should use these settings in your application:".
+      "\n\n".
+      "  - **URL:** Set this to your full domain with protocol. For this ".
+      "    Phabricator install, the correct value is: `%s`\n".
+      "  - **Redirect URL**: Set this to: `%s`\n".
+      "\n\n".
+      "Once you've created an application, copy the **Client ID** and ".
+      "**Client Secret** into the fields above.",
+      $uri,
+      $callback_uri);
+  }
+
+  protected function newOAuthAdapter() {
+    return new PhutilAuthAdapterOAuthWordPress();
+  }
+
+  protected function getLoginIcon() {
+    return 'WordPressCOM';
+  }
+}

webroot/rsrc/css/sprite-login.css

@@ -86,6 +86,10 @@ only screen and (-webkit-min-device-pixel-ratio: 1.5) {
   background-position: 0px -140px;
 }
 
-.login-Yahoo {
+.login-WordPressCOM {
   background-position: -35px -140px;
 }
+
+.login-Yahoo {
+  background-position: -70px -140px;
+}