installed plugin W3 Total Cache
version 2.3.2
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<?php
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/*
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* Copyright 2014 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* WARNING - this class depends on the Google App Engine PHP library
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* which is 5.3 and above only, so if you include this in a PHP 5.2
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* setup or one without 5.3 things will blow up.
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*/
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use google\appengine\api\app_identity\AppIdentityService;
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/**
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* Authentication via the Google App Engine App Identity service.
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*/
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class W3TCG_Google_Auth_AppIdentity extends W3TCG_Google_Auth_Abstract
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{
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const CACHE_PREFIX = "W3TCG_Google_Auth_AppIdentity::";
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private $key = null;
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private $client;
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private $token = false;
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private $tokenScopes = false;
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public function __construct(W3TCG_Google_Client $client, $config = null)
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{
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$this->client = $client;
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}
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/**
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* Retrieve an access token for the scopes supplied.
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*/
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public function authenticateForScope($scopes)
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{
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if ($this->token && $this->tokenScopes == $scopes) {
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return $this->token;
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}
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$cacheKey = self::CACHE_PREFIX;
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if (is_string($scopes)) {
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$cacheKey .= $scopes;
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} else if (is_array($scopes)) {
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$cacheKey .= implode(":", $scopes);
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}
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$this->token = $this->client->getCache()->get($cacheKey);
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if (!$this->token) {
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$this->token = AppIdentityService::getAccessToken($scopes);
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if ($this->token) {
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$this->client->getCache()->set(
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$cacheKey,
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$this->token
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);
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}
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}
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$this->tokenScopes = $scopes;
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return $this->token;
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}
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/**
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* Perform an authenticated / signed apiHttpRequest.
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* This function takes the apiHttpRequest, calls apiAuth->sign on it
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* (which can modify the request in what ever way fits the auth mechanism)
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* and then calls apiCurlIO::makeRequest on the signed request
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*
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* @param W3TCG_Google_Http_Request $request
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* @return W3TCG_Google_Http_Request The resulting HTTP response including the
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* responseHttpCode, responseHeaders and responseBody.
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*/
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public function authenticatedRequest(W3TCG_Google_Http_Request $request)
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{
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$request = $this->sign($request);
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return $this->client->getIo()->makeRequest($request);
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}
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public function sign(W3TCG_Google_Http_Request $request)
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{
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if (!$this->token) {
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// No token, so nothing to do.
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return $request;
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}
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// Add the OAuth2 header to the request
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$request->setRequestHeaders(
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array('Authorization' => 'Bearer ' . $this->token['access_token'])
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);
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return $request;
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}
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}
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