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<?php /** * HTTP API: WP_HTTP_Proxy class * * @package WordPress * @subpackage HTTP * @since 4.4.0 */ /** * Core class used to implement HTTP API proxy support. * * There are caveats to proxy support. It requires that defines be made in the wp-config.php file to * enable proxy support. There are also a few filters that plugins can hook into for some of the * constants. * * Please note that only BASIC authentication is supported by most transports. * cURL MAY support more methods (such as NTLM authentication) depending on your environment. * * The constants are as follows: * <ol> * <li>WP_PROXY_HOST - Enable proxy support and host for connecting.</li> * <li>WP_PROXY_PORT - Proxy port for connection. No default, must be defined.</li> * <li>WP_PROXY_USERNAME - Proxy username, if it requires authentication.</li> * <li>WP_PROXY_PASSWORD - Proxy password, if it requires authentication.</li> * <li>WP_PROXY_BYPASS_HOSTS - Will prevent the hosts in this list from going through the proxy. * You do not need to have localhost and the site host in this list, because they will not be passed * through the proxy. The list should be presented in a comma separated list, wildcards using * are supported, eg. *.wordpress.org</li> * </ol> * * An example can be as seen below. * * define('WP_PROXY_HOST', '192.168.84.101'); * define('WP_PROXY_PORT', '8080'); * define('WP_PROXY_BYPASS_HOSTS', 'localhost, www.example.com, *.wordpress.org'); * * @link https://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress. * @link https://core.trac.wordpress.org/ticket/14636 Allow wildcard domains in WP_PROXY_BYPASS_HOSTS * * @since 2.8.0 */ class WP_HTTP_Proxy { /** * Whether proxy connection should be used. * * @since 2.8.0 * * @use WP_PROXY_HOST * @use WP_PROXY_PORT * * @return bool */ public function is_enabled() { return defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT'); } /** * Whether authentication should be used. * * @since 2.8.0 * * @use WP_PROXY_USERNAME * @use WP_PROXY_PASSWORD * * @return bool */ public function use_authentication() { return defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD'); } /** * Retrieve the host for the proxy server. * * @since 2.8.0 * * @return string */ public function host() { if ( defined('WP_PROXY_HOST') ) return WP_PROXY_HOST; return ''; } /** * Retrieve the port for the proxy server. * * @since 2.8.0 * * @return string */ public function port() { if ( defined('WP_PROXY_PORT') ) return WP_PROXY_PORT; return ''; } /** * Retrieve the username for proxy authentication. * * @since 2.8.0 * * @return string */ public function username() { if ( defined('WP_PROXY_USERNAME') ) return WP_PROXY_USERNAME; return ''; } /** * Retrieve the password for proxy authentication. * * @since 2.8.0 * * @return string */ public function password() { if ( defined('WP_PROXY_PASSWORD') ) return WP_PROXY_PASSWORD; return ''; } /** * Retrieve authentication string for proxy authentication. * * @since 2.8.0 * * @return string */ public function authentication() { return $this->username() . ':' . $this->password(); } /** * Retrieve header string for proxy authentication. * * @since 2.8.0 * * @return string */ public function authentication_header() { return 'Proxy-Authorization: Basic ' . base64_encode( $this->authentication() ); } /** * Whether URL should be sent through the proxy server. * * We want to keep localhost and the site URL from being sent through the proxy server, because * some proxies can not handle this. We also have the constant available for defining other * hosts that won't be sent through the proxy. * * @since 2.8.0 * * @staticvar array|null $bypass_hosts * @staticvar array $wildcard_regex * * @param string $uri URI to check. * @return bool True, to send through the proxy and false if, the proxy should not be used. */ public function send_through_proxy( $uri ) { /* * parse_url() only handles http, https type URLs, and will emit E_WARNING on failure. * This will be displayed on sites, which is not reasonable. */ $check = @parse_url($uri); // Malformed URL, can not process, but this could mean ssl, so let through anyway. if ( $check === false ) return true; $home = parse_url( get_option('siteurl') ); /** * Filters whether to preempt sending the request through the proxy server. * * Returning false will bypass the proxy; returning true will send * the request through the proxy. Returning null bypasses the filter. * * @since 3.5.0 * * @param null $override Whether to override the request result. Default null. * @param string $uri URL to check. * @param array $check Associative array result of parsing the URI. * @param array $home Associative array result of parsing the site URL. */ $result = apply_filters( 'pre_http_send_through_proxy', null, $uri, $check, $home ); if ( ! is_null( $result ) ) return $result; if ( 'localhost' == $check['host'] || ( isset( $home['host'] ) && $home['host'] == $check['host'] ) ) return false; if ( !defined('WP_PROXY_BYPASS_HOSTS') ) return true; static $bypass_hosts = null; static $wildcard_regex = array(); if ( null === $bypass_hosts ) { $bypass_hosts = preg_split('|,\s*|', WP_PROXY_BYPASS_HOSTS); if ( false !== strpos(WP_PROXY_BYPASS_HOSTS, '*') ) { $wildcard_regex = array(); foreach ( $bypass_hosts as $host ) $wildcard_regex[] = str_replace( '\*', '.+', preg_quote( $host, '/' ) ); $wildcard_regex = '/^(' . implode('|', $wildcard_regex) . ')$/i'; } } if ( !empty($wildcard_regex) ) return !preg_match($wildcard_regex, $check['host']); else return !in_array( $check['host'], $bypass_hosts ); } }
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customize
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css
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