testing

PhabricatorAuthProviderOAuthFacebook.php
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			<?php

			final class PhabricatorAuthProviderOAuthFacebook
			extends PhabricatorAuthProviderOAuth {

			public function getProviderName() {
			return pht('Facebook');
			}

			protected function newOAuthAdapter() {
			return new PhutilAuthAdapterOAuthFacebook();
			}

			protected function getLoginIcon() {
			return 'Facebook';
			}

			public function isEnabled() {
			return parent::isEnabled() &&
			PhabricatorEnv::getEnvConfig('facebook.auth-enabled');
			}

			protected function getOAuthClientID() {
			return PhabricatorEnv::getEnvConfig('facebook.application-id');
			}

			protected function getOAuthClientSecret() {
			$secret = PhabricatorEnv::getEnvConfig('facebook.application-secret');
			if ($secret) {
			return new PhutilOpaqueEnvelope($secret);
			}
			return null;
			}

			public function shouldAllowLogin() {
			return true;
			}

			public function shouldAllowRegistration() {
			return PhabricatorEnv::getEnvConfig('facebook.registration-enabled');
			}

			public function shouldAllowAccountLink() {
			return true;
			}

			public function shouldAllowAccountUnlink() {
			return !PhabricatorEnv::getEnvConfig('facebook.auth-permanent');
			}

			}