305 lines
6.4 KiB
PHP
305 lines
6.4 KiB
PHP
<?php
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/**
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* File: Cdnfsd_TransparentCDN_Engine.php
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*
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* @since 0.15.0
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*/
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namespace W3TC;
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if ( ! defined( 'W3TC_CDN_TRANSPARENTCDN_PURGE_URL' ) ) {
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define( 'W3TC_CDN_TRANSPARENTCDN_PURGE_URL', 'https://api.transparentcdn.com/v1/companies/%s/invalidate/' );
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}
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if ( ! defined( 'W3TC_CDN_TRANSPARENTCDN_AUTHORIZATION_URL' ) ) {
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define( 'W3TC_CDN_TRANSPARENTCDN_AUTHORIZATION_URL', 'https://api.transparentcdn.com/v1/oauth2/access_token/' );
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}
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/**
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* Class: Cdn_TransparentCDN_Api
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*
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* @since 0.15.0
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*/
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class Cdn_TransparentCDN_Api {
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/**
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* Token.
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*
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* @since 0.15.0
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*
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* @var string
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*/
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var $_token;
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/**
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* Config.
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*
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* @since 0.15.0
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*
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* @var array
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*/
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var $_config;
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/**
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* Constructor.
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*
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* @since 0.15.0
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*
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* @param array $config
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*/
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public function __construct( $config = array() ) {
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$config = array_merge( array(
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'company_id' => '',
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'client_id' => '',
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'client_secret' => ''
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), $config );
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$this->_config = $config;
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}
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/**
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* Purge URL addresses.
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*
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* @since 0.15.0
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*
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* @param array $urls URL addresses
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* @return bool
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*/
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public function purge( $urls ) {
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if ( empty( $this->_config['company_id'] ) ) {
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return false;
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}
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if ( empty( $this->_config['client_id'] ) ) {
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return false;
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}
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if ( empty( $this->_config['client_secret'] ) ) {
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return false;
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}
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// We ask for the authorization token.
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$this->_get_token();
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$invalidation_urls = array();
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//Included a regex filter because some of our clients reported receiving urls as "True" or "False"
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foreach ( $urls as $url ) {
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//Oh array_map+lambdas, how I miss u...
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if ( filter_var( $url, FILTER_VALIDATE_URL ) ) {
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$invalidation_urls[] = $url;
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}
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}
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if ( count( $invalidation_urls ) === 0 ) {
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$invalidation_urls[] = '';
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}
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return $this->_purge_content( $invalidation_urls, $error );
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}
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/**
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* Purge content.
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*
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* @since 0.15.0
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*
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* @param string $files Files.
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* @param string $error Error.
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* @return bool
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*/
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public function _purge_content( $files, &$error ) {
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$url = sprintf( W3TC_CDN_TRANSPARENTCDN_PURGE_URL, $this->_config['company_id'] );
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$args = array(
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'method' => 'POST',
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'user-agent' => W3TC_POWERED_BY,
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'headers' => array(
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'Accept' => 'application/json',
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'Content-Type' => 'application/json',
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'Authorization' => sprintf( 'Bearer %s', $this->_token ),
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),
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'body' => json_encode( array( 'urls' => $files ) ),
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);
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$response = wp_remote_request( $url, $args );
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if ( is_wp_error( $response ) ) {
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$error = implode( '; ', $response->get_error_messages() );
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return false;
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}
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switch ( $response['response']['code'] ) {
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case 200:
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$body = json_decode( $response['body'] );
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if ( is_array( $body->urls_to_send ) && count( $body->urls_to_send ) > 0 ) {
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// We have invalidated at least one URL.
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return true;
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}
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elseif ( 0 < count( $files ) && ! empty( $files[0] ) ) {
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$error = __( 'Invalid Request URL', 'w3-total-cache' );
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break;
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}
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return true;
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case 400:
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if ( count( $files ) > 0 && empty( $files[0] ) ) {
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// Test case.
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return true;
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}
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$error = __( 'Invalid Request Parameter', 'w3-total-cache' );
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break;
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case 403:
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$error = __( 'Authentication Failure or Insufficient Access Rights', 'w3-total-cache' );
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break;
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case 404:
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$error = __( 'Invalid Request URI', 'w3-total-cache' );
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break;
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case 500:
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$error = __( 'Server Error', 'w3-total-cache' );
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break;
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default:
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$error = __( 'Unknown error', 'w3-total-cache' );
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break;
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}
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return false;
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}
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/**
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* Purges CDN completely.
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*
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* @since 0.15.0
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*
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* @todo Implement bans using "*".
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*
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* @param array $results Results.
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* @return bool
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*/
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public function purge_all( &$results ) {
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return false;
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}
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/**
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* Get the token to use as authorization in override requests.
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*
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* @since 0.15.0
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*
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* @todo Better bug handline.
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*
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* @return bool
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*/
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public function _get_token() {
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$client_id = $this->_config['client_id'];
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$client_secret = $this->_config['client_secret'];
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$args = array(
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'method' => 'POST',
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'user-agent' => W3TC_POWERED_BY,
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'headers' => array(
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'Accept' => 'application/json',
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'Content-Type' => 'application/x-www-form-urlencoded',
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),
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'body' => "grant_type=client_credentials&client_id=$client_id&client_secret=$client_secret",
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);
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$response = wp_remote_request( W3TC_CDN_TRANSPARENTCDN_AUTHORIZATION_URL, $args );
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if ( is_wp_error( $response ) ) {
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$error = implode( '; ', $response->get_error_messages() );
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return false;
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}
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$body = $response['body'];
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$jobj = json_decode( $body );
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$this->_token = $jobj->access_token;
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return true;
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}
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}
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/**
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* Class: Cdnfsd_TransparentCDN_Engine
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*
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* @since 0.15.0
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*/
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class Cdnfsd_TransparentCDN_Engine {
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/**
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* Config.
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*
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* @since 0.15.0
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* @access private
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*
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* @var array
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*/
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private $config;
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public function __construct( $config = array() ) {
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$this->config = $config;
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}
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/**
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* Flush URLs.
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*
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* @since 0.15.0
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*
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* @param array $urls URL addresses.
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*/
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function flush_urls( $urls ) {
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if ( empty( $this->config['client_id'] ) ) {
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throw new \Exception( __( 'API key not specified.', 'w3-total-cache' ) );
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}
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$api = new Cdn_TransparentCDN_Api( $this->config );
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try {
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$result = $api->purge( $urls );
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throw new \Exception( __( 'Problem purging', 'w3-total-cache' ) );
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} catch ( \Exception $ex ) {
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if ( $ex->getMessage() === 'Validation Failure: Purge url must contain one of your hostnames' ) {
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throw new \Exception( __(
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'CDN site is not configured correctly: Delivery Domain must match your site domain',
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'w3-total-cache'
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) );
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} else {
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throw $ex;
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}
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}
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}
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/**
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* Flushes CDN completely.
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*
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* @since 0.15.0
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*/
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function flush_all() {
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if ( empty( $this->config['client_id'] ) ) {
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throw new \Exception( __( 'API key not specified.', 'w3-total-cache' ) );
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}
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$api = new Cdn_TransparentCDN_Api( $this->config );
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$items = array();
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$items[] = array(
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'url' => home_url( '/' ),
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'recursive' => true,
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);
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try {
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$r = $api->purge( array( 'items' => $items ) );
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} catch ( \Exception $ex ) {
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if ( $ex->getMessage() === 'Validation Failure: Purge url must contain one of your hostnames' ) {
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throw new \Exception( __(
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'CDN site is not configured correctly: Delivery Domain must match your site domain',
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'w3-total-cache'
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) );
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} else {
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throw $ex;
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}
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}
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}
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}
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