450 lines
13 KiB
PHP
450 lines
13 KiB
PHP
<?php
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/**
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* File: PageSpeed_Api.php
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*
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* Controls Google OAuth2.0 requests both for authentication and queries against the PageSpeed API.
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*
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* @since 2.3.0 Update to utilize OAuth2.0 and overhaul of feature.
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*
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* @package W3TC
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*/
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namespace W3TC;
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/**
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* PageSpeed API.
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*
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* @since 2.3.0
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*/
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class PageSpeed_Api {
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/**
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* Config.
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*
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* @var object
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*/
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private $config;
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/**
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* W3TCG_Google_Client.
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*
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* @var object
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*/
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public $client;
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/**
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* W3TC API server base URL. Overwritten by W3TC_API2_URL constant.
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*
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* @var string
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*/
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private $w3tc_api_base_url = 'https://api2.w3-edge.com';
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/**
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* Retry Attemps. Overwritten by W3TC_PAGESPEED_MAX_ATTEMPTS constant.
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*
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* @var string
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*/
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private $retry_attempts = 4;
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/**
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* Google PageSpeed API URL. Overwritten by W3TC_PAGESPEED_API_URL constant.
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*
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* @var string
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*/
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private $pagespeed_api_base_url = 'https://www.googleapis.com/pagespeedonline/v5/runPagespeed';
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/**
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* PageSpeed API constructor.
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*
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* @since 2.3.0
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*
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* @param string $access_token_json API access token JSON.
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*/
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public function __construct( $access_token_json = null ) {
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$this->config = Dispatcher::config();
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$this->client = new \W3TCG_Google_Client();
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$this->client->setApplicationName( 'W3TC PageSpeed Analyzer' );
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$this->client->addScope( 'openid' );
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$this->client->setAccessType( 'offline' );
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$this->client->setApprovalPrompt( 'force' );
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$this->client->setDefer( true );
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if ( ! empty( $access_token_json ) ) {
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$this->client->setAccessToken( $access_token_json );
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$this->maybe_refresh_token();
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}
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}
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/**
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* Run PageSpeed API.
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*
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* @since 2.3.0
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*
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* @return void
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*/
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public function run() {
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add_action( 'admin_notices', array( $this, 'errors_notice' ) );
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}
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/**
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* Fully analyze URL via PageSpeed API.
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*
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* @since 2.3.0
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*
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* @param string $url URL to analyze via PageSpeed API.
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*
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* @return array
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*/
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public function analyze( $url ) {
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$mobile = $this->analyze_strategy( $url, 'mobile' );
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$desktop = $this->analyze_strategy( $url, 'desktop' );
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return array(
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'mobile' => $mobile,
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'desktop' => $desktop,
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'test_url' => Util_Environment::url_format(
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$this->get_pagespeed_url(),
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array( 'url' => $url )
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),
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);
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}
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/**
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* Analyze URL via PageSpeed API using strategy.
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*
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* @since 2.3.0
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*
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* @param string $url URL to analyze.
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* @param string $strategy Strategy to use desktop/mobile.
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*
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* @return array
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*/
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public function analyze_strategy( $url, $strategy ) {
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$data = $this->process_request(
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array(
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'url' => $url,
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'category' => 'performance',
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'strategy' => $strategy,
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)
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);
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if ( ! empty( Util_PageSpeed::get_value_recursive( $data, array( 'error', 'code' ) ) ) ) {
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return array(
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'error' => array(
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'code' => Util_PageSpeed::get_value_recursive( $data, array( 'error', 'code' ) ),
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'message' => Util_PageSpeed::get_value_recursive( $data, array( 'error', 'message' ) ),
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),
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);
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}
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return array_merge_recursive(
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PageSpeed_Data::prepare_pagespeed_data( $data ),
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PageSpeed_Instructions::get_pagespeed_instructions()
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);
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}
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/**
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* Make API request.
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*
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* @since 2.3.0
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*
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* @param string $query API request query.
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*
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* @return array
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*/
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public function process_request( $query ) {
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$access_token_json = $this->client->getAccessToken();
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if ( empty( $access_token_json ) ) {
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return array(
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'error' => array(
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'code' => 403,
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'message' => __( 'Missing Google access token.', 'w3-total-cache' ),
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),
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);
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}
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$access_token = json_decode( $access_token_json );
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$request = Util_Environment::url_format(
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$this->get_pagespeed_url(),
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array_merge(
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$query,
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array(
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'quotaUser' => Util_Http::generate_site_id(),
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'access_token' => $access_token->access_token,
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)
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)
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);
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// Attempt the request up to x times with an increasing delay between each attempt. Uses W3TC_PAGESPEED_MAX_ATTEMPTS constant if defined.
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$attempts = 0;
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while ( ++$attempts <= $this->get_max_attempts() ) {
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try {
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$response = wp_remote_get(
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$request,
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array(
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'timeout' => 60,
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)
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);
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if ( ! is_wp_error( $response ) && 200 === $response['response']['code'] ) {
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break;
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}
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} catch ( \Exception $e ) {
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if ( $attempts >= $this->get_max_attempts() ) {
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return array(
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'error' => array(
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'code' => 500,
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'message' => $e->getMessage(),
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),
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);
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}
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}
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// Sleep for a cumulative .5 seconds each attempt.
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usleep( $attempts * 500000 );
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};
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if ( isset( $response['response']['code'] ) && 200 !== $response['response']['code'] ) {
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// Google PageSpeed Insights sometimes will return a 500 and message body with details so we still grab the body response.
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$decoded_body = json_decode( wp_remote_retrieve_body( $response ), true );
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return array(
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'error' => array(
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'code' => $response['response']['code'],
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'message' => ( ! empty( $decoded_body['error']['message'] ) ? $decoded_body['error']['message'] : $response['response']['message'] ),
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),
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);
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}
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return json_decode( wp_remote_retrieve_body( $response ), true );
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}
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/**
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* Checks if the Google access token is expired and attempts to refresh.
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*
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* @since 2.3.0
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*
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* @return void
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*/
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public function maybe_refresh_token() {
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$site_id = Util_Http::generate_site_id();
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$w3tc_pagespeed_key = $this->config->get_string( 'widget.pagespeed.w3tc_pagespeed_key' );
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if ( $this->client->isAccessTokenExpired() && ! empty( $w3tc_pagespeed_key ) ) {
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$this->refresh_token( $site_id, $w3tc_pagespeed_key );
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}
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}
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/**
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* Refreshes the Google access token if a valid refresh token is defined.
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*
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* @param string $site_id Site ID.
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* @param string $w3tc_pagespeed_key W3 API access key.
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*
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* @return string
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*/
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public function refresh_token( $site_id, $w3tc_pagespeed_key ) {
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if ( empty( $site_id ) || empty( $w3tc_pagespeed_key ) ) {
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update_option(
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'w3tcps_refresh_fail',
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__( 'Google PageSpeed access token refresh missing required parameters!', 'w3-total-cache' )
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);
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return;
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}
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$request = $this->get_w3tc_api_url( 'google/refresh-token' ) . '/' . rawurlencode( $site_id ) . '/' . rawurlencode( $w3tc_pagespeed_key );
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$response = wp_remote_get(
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$request,
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array(
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'timeout' => 60,
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)
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);
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$response_body_json = wp_remote_retrieve_body( $response );
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$response_body = json_decode( $response_body_json, true );
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if ( is_wp_error( $response ) ) {
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return wp_json_encode(
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array(
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'error' => array(
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'code' => $response->get_error_code(),
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'message' => $response->get_error_message(),
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),
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)
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);
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} elseif ( isset( $response_body['error']['code'] ) && 200 !== $response_body['error']['code'] ) {
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if ( 'refresh-token-missing-site-id' === $response_body['error']['id'] ) {
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$message = __( 'No site ID provided for access key refresh!', 'w3-total-cache' );
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} elseif ( 'refresh-token-missing-w3tc-pagespeed-key' === $response_body['error']['id'] ) {
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$message = __( 'No W3TC API key provided for access key refresh!', 'w3-total-cache' );
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} elseif ( 'refresh-token-not-found' === $response_body['error']['id'] ) {
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$message = __( 'No matching Google access record found for W3TC API key!', 'w3-total-cache' );
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} elseif ( 'refresh-token-missing-refresh-token' === $response_body['error']['id'] ) {
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$message = __( 'Matching Google access record found but the refresh token value is blank!', 'w3-total-cache' );
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}
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update_option(
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'w3tcps_refresh_fail',
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__( 'Google PageSpeed access token refresh failed.', 'w3-total-cache' )
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);
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update_option(
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'w3tcps_refresh_fail_message',
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$message
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);
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// Reset the token and key.
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$this->config->set( 'widget.pagespeed.access_token', '' );
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$this->config->set( 'widget.pagespeed.w3tc_pagespeed_key', '' );
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$this->config->save();
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return;
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}
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$access_token = $response_body_json;
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if ( empty( $access_token ) || empty( $response_body['access_token'] ) ) {
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update_option(
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'w3tcps_refresh_fail',
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__( 'Google PageSpeed access token refresh failed due to response missing access token.', 'w3-total-cache' )
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);
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return;
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}
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$this->config->set( 'widget.pagespeed.access_token', $access_token );
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$this->config->save();
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}
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/**
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* Get W3TC PageSpeed API max attempts.
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*
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* @since 2.3.0
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*
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* @return int
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*/
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public function get_max_attempts() {
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return defined( 'W3TC_PAGESPEED_MAX_ATTEMPTS' ) && W3TC_PAGESPEED_MAX_ATTEMPTS ? W3TC_PAGESPEED_MAX_ATTEMPTS : $this->retry_attempts;
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}
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/**
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* Get Google PageSpeed API URL.
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*
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* @since 2.3.0
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*
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* @return string
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*/
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public function get_pagespeed_url() {
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return defined( 'W3TC_PAGESPEED_API_URL' ) && W3TC_PAGESPEED_API_URL ? W3TC_PAGESPEED_API_URL : $this->pagespeed_api_base_url;
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}
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/**
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* Get W3TC API server URL target.
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*
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* @since 2.3.0
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*
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* @param string $target API target URI.
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*
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* @return string
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*/
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public function get_w3tc_api_url( $target ) {
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return defined( 'W3TC_API2_URL' ) && W3TC_API2_URL ?
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trailingslashit( W3TC_API2_URL ) . $target :
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trailingslashit( $this->w3tc_api_base_url ) . $target;
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}
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/**
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* PageSpeed authorize admin notice.
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*
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* @since 2.3.0
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*/
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public function errors_notice() {
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if ( current_user_can( 'manage_options' ) ) {
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switch ( true ) {
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case get_option( 'w3tcps_authorize_success' ):
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echo '<div class="updated is-dismissible"><p>' . esc_html( get_option( 'w3tcps_authorize_success' ) ) . '</p></div>';
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delete_option( 'w3tcps_authorize_success' );
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break;
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case get_option( 'w3tcps_authorize_fail' ):
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echo '<div class="error is-dismissible"><p>' . esc_html( get_option( 'w3tcps_authorize_fail' ) ) . '</p><p>' . wp_kses( get_option( 'w3tcps_authorize_fail_message' ), Util_PageSpeed::get_allowed_tags() ) . '</p></div>';
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delete_option( 'w3tcps_authorize_fail' );
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delete_option( 'w3tcps_authorize_fail_message' );
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break;
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case get_option( 'w3tcps_refresh_fail' ):
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echo '<div class="error is-dismissible"><p>' . esc_html( get_option( 'w3tcps_refresh_fail' ) ) . '</p><p>' . wp_kses( get_option( 'w3tcps_refresh_fail_message' ), Util_PageSpeed::get_allowed_tags() ) . '</p></div>';
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delete_option( 'w3tcps_refresh_fail' );
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delete_option( 'w3tcps_refresh_fail_message' );
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break;
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case get_option( 'w3tcps_revoke_fail' ):
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echo '<div class="error is-dismissible"><p>' . esc_html( get_option( 'w3tcps_revoke_fail' ) ) . '</p><p>' . wp_kses( get_option( 'w3tcps_revoke_fail_message' ), Util_PageSpeed::get_allowed_tags() ) . '</p></div>';
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delete_option( 'w3tcps_revoke_fail' );
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delete_option( 'w3tcps_revoke_fail_message' );
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break;
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}
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}
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}
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/**
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* Reset authentication.
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*
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* @since 2.3.0
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*/
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public function reset() {
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$access_token = $this->client->getAccessToken();
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$site_id = Util_Http::generate_site_id();
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$w3tc_pagespeed_key = $this->config->get_string( 'widget.pagespeed.w3tc_pagespeed_key' );
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if ( empty( $access_token ) || empty( $site_id ) || empty( $w3tc_pagespeed_key ) ) {
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update_option(
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'w3tcps_revoke_fail',
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__( 'Google PageSpeed access token revocation missing required parameters!', 'w3-total-cache' )
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);
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return;
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}
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$request = $this->get_w3tc_api_url( 'google/revoke-token' ) . '/' . rawurlencode( $access_token ) . '/' . rawurlencode( $site_id ) . '/' . rawurlencode( $w3tc_pagespeed_key );
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$response = wp_remote_get(
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$request,
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array(
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'timeout' => 60,
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)
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);
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$response_body_json = wp_remote_retrieve_body( $response );
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$response_body = json_decode( $response_body_json, true );
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if ( is_wp_error( $response ) ) {
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return wp_json_encode(
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array(
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'error' => array(
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'code' => $response->get_error_code(),
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'message' => $response->get_error_message(),
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),
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)
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);
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} elseif ( isset( $response_body['error']['code'] ) && 200 !== $response_body['error']['code'] ) {
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if ( 'revoke-token-access-token-missing' === $response_body['error']['id'] ) {
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$message = __( 'No access token provided for revoke!', 'w3-total-cache' );
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} elseif ( 'revoke-token-api-key-missing' === $response_body['error']['id'] ) {
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$message = __( 'No W3TC API key provided for revoke!', 'w3-total-cache' );
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} elseif ( 'revoke-token-not-found' === $response_body['error']['id'] ) {
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$message = __( 'No matching Google access record found for W3TC API key!', 'w3-total-cache' );
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}
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update_option(
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'w3tcps_revoke_fail',
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__( 'Google PageSpeed Access Token revocation failed.', 'w3-total-cache' )
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);
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update_option(
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'w3tcps_revoke_fail_message',
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$message
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);
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return;
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}
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$this->config->set( 'widget.pagespeed.access_token', '' );
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$this->config->set( 'widget.pagespeed.w3tc_pagespeed_key', '' );
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$this->config->save();
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}
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}
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