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First pass of HTTP Proxy support. See #4011 props jacobsantos. 

git-svn-id: http://svn.automattic.com/wordpress/trunk@10692 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
westi 2009-03-04 07:28:39 +00:00
parent cf07babee1
commit add8403cec
1 changed files with 448 additions and 217 deletions
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665
wp-includes/http.php
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@ -12,160 +12,27 @@
* @author Jacob Santos <wordpress@santosj.name>
*/
/**
* Implementation for deflate and gzip transfer encodings.
*
* Includes RFC 1950, RFC 1951, and RFC 1952.
*
* @since unknown
* @package WordPress
* @subpackage HTTP
*/
class WP_Http_Encoding {
/**
* Compress raw string using the deflate format.
*
* Supports the RFC 1951 standard.
*
* @since unknown
*
* @param string $raw String to compress.
* @param int $level Optional, default is 9. Compression level, 9 is highest.
* @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
* @return string|bool False on failure.
*/
function compress( $raw, $level = 9, $supports = null ) {
return gzdeflate( $raw, $level );
}
/**
* Decompression of deflated string.
*
* Will attempt to decompress using the RFC 1950 standard, and if that fails
* then the RFC 1951 standard deflate will be attempted. Finally, the RFC
* 1952 standard gzip decode will be attempted. If all fail, then the
* original compressed string will be returned.
*
* @since unknown
*
* @param string $compressed String to decompress.
* @param int $length The optional length of the compressed data.
* @return string|bool False on failure.
*/
function decompress( $compressed, $length = null ) {
$decompressed = gzinflate( $compressed );
if( false !== $decompressed )
return $decompressed;
$decompressed = gzuncompress( $compressed );
if( false !== $decompressed )
return $decompressed;
$decompressed = gzdecode( $compressed );
if( false !== $decompressed )
return $decompressed;
return $compressed;
}
/**
* What encoding types to accept and their priority values.
*
* @since unknown
*
* @return string Types of encoding to accept.
*/
function accept_encoding() {
$type = array();
if( function_exists( 'gzinflate' ) )
$type[] = 'deflate;q=1.0';
if( function_exists( 'gzuncompress' ) )
$type[] = 'compress;q=0.5';
if( function_exists( 'gzdecode' ) )
$type[] = 'gzip;q=0.5';
return implode(', ', $type);
}
/**
* What enconding the content used when it was compressed to send in the headers.
*
* @since unknown
*
* @return string Content-Encoding string to send in the header.
*/
function content_encoding() {
return 'deflate';
}
/**
* Whether the content be decoded based on the headers.
*
* @since unknown
*
* @param array|string $headers All of the available headers.
* @return bool
*/
function should_decode($headers) {
if( is_array( $headers ) ) {
if( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )
return true;
} else if( is_string( $headers ) ) {
return ( stripos($headers, 'content-encoding:') !== false );
}
return false;
}
/**
* Whether decompression and compression are supported by the PHP version.
*
* Each function is tested instead of checking for the zlib extension, to
* ensure that the functions all exist in the PHP version and aren't
* disabled.
*
* @since unknown
*
* @return bool
*/
function is_available() {
return ( function_exists('gzuncompress') || function_exists('gzdeflate') ||
function_exists('gzinflate') );
}
}
/**
* WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
*
* This class is called for the functionality of making HTTP requests and should
* replace Snoopy functionality, eventually. There is no available functionality
* to add HTTP transport implementations, since most of the HTTP transports are
* added and available for use.
* This class is called for the functionality of making HTTP requests and should replace Snoopy
* functionality, eventually. There is no available functionality to add HTTP transport
* implementations, since most of the HTTP transports are added and available for use.
*
* The exception is that cURL is not available as a transport and lacking an
* implementation. It will be added later and should be a patch on the WordPress
* Trac.
* The exception is that cURL is not available as a transport and lacking an implementation. It will
* be added later and should be a patch on the WordPress Trac.
*
* There are no properties, because none are needed and for performance reasons.
* Some of the functions are static and while they do have some overhead over
* functions in PHP4, the purpose is maintainability. When PHP5 is finally the
* requirement, it will be easy to add the static keyword to the code. It is not
* as easy to convert a function to a method after enough code uses the old way.
* There are no properties, because none are needed and for performance reasons. Some of the
* functions are static and while they do have some overhead over functions in PHP4, the purpose is
* maintainability. When PHP5 is finally the requirement, it will be easy to add the static keyword
* to the code. It is not as easy to convert a function to a method after enough code uses the old
* way.
*
* Debugging includes several actions, which pass different variables for
* debugging the HTTP API.
* Debugging includes several actions, which pass different variables for debugging the HTTP API.
*
* <strong>http_transport_get_debug</strong> - gives working, nonblocking, and
* blocking transports.
* <strong>http_transport_get_debug</strong> - gives working, nonblocking, and blocking transports.
*
* <strong>http_transport_post_debug</strong> - gives working, nonblocking, and
* blocking transports.
* <strong>http_transport_post_debug</strong> - gives working, nonblocking, and blocking transports.
*
* @package WordPress
* @subpackage HTTP
@ -311,40 +178,35 @@ class WP_Http {
/**
* Send a HTTP request to a URI.
*
* The body and headers are part of the arguments. The 'body' argument is
* for the body and will accept either a string or an array. The 'headers'
* argument should be an array, but a string is acceptable. If the 'body'
* argument is an array, then it will automatically be escaped using
* http_build_query().
* The body and headers are part of the arguments. The 'body' argument is for the body and will
* accept either a string or an array. The 'headers' argument should be an array, but a string
* is acceptable. If the 'body' argument is an array, then it will automatically be escaped
* using http_build_query().
*
* The only URI that are supported in the HTTP Transport implementation are
* the HTTP and HTTPS protocols. HTTP and HTTPS are assumed so the server
* might not know how to handle the send headers. Other protocols are
* unsupported and most likely will fail.
* The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS
* protocols. HTTP and HTTPS are assumed so the server might not know how to handle the send
* headers. Other protocols are unsupported and most likely will fail.
*
* The defaults are 'method', 'timeout', 'redirection', 'httpversion',
* 'blocking' and 'user-agent'.
* The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and
* 'user-agent'.
*
* Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports
* technically allow others, but should not be assumed. The 'timeout' is
* used to sent how long the connection should stay open before failing when
* no response. 'redirection' is used to track how many redirects were taken
* and used to sent the amount for other transports, but not all transports
* Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow
* others, but should not be assumed. The 'timeout' is used to sent how long the connection
* should stay open before failing when no response. 'redirection' is used to track how many
* redirects were taken and used to sent the amount for other transports, but not all transports
* accept setting that value.
*
* The 'httpversion' option is used to sent the HTTP version and accepted
* values are '1.0', and '1.1' and should be a string. Version 1.1 is not
* supported, because of chunk response. The 'user-agent' option is the
* user-agent and is used to replace the default user-agent, which is
* The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and
* '1.1' and should be a string. Version 1.1 is not supported, because of chunk response. The
* 'user-agent' option is the user-agent and is used to replace the default user-agent, which is
* 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
*
* 'blocking' is the default, which is used to tell the transport, whether
* it should halt PHP while it performs the request or continue regardless.
* Actually, that isn't entirely correct. Blocking mode really just means
* whether the fread should just pull what it can whenever it gets bytes or
* if it should wait until it has enough in the buffer to read or finishes
* reading the entire content. It doesn't actually always mean that PHP will
* continue going after making the request.
* 'blocking' is the default, which is used to tell the transport, whether it should halt PHP
* while it performs the request or continue regardless. Actually, that isn't entirely correct.
* Blocking mode really just means whether the fread should just pull what it can whenever it
* gets bytes or if it should wait until it has enough in the buffer to read or finishes reading
* the entire content. It doesn't actually always mean that PHP will continue going after making
* the request.
*
* @access public
* @since 2.7.0
@ -569,7 +431,7 @@ class WP_Http {
return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies);
}
/**
* Takes the arguments for a ::request() and checks for the cookie array.
*
@ -597,9 +459,8 @@ class WP_Http {
/**
* Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.
*
* Based off the HTTP http_encoding_dechunk function. Does not support
* UTF-8. Does not support returning footer headers. Shouldn't be too
* difficult to support it though.
* Based off the HTTP http_encoding_dechunk function. Does not support UTF-8. Does not support
* returning footer headers. Shouldn't be too difficult to support it though.
*
* @todo Add support for footer chunked headers.
* @access public
@ -651,7 +512,7 @@ class WP_Http {
* and this will only allow localhost and your blog to make requests. The constant
* WP_ACCESSABLE_HOSTS will allow additional hosts to go through for requests.
*
* @since unknown
* @since 2.8.0
* @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.
*
* @param string $uri URI of url.
@ -693,8 +554,8 @@ class WP_Http {
/**
* HTTP request method uses fsockopen function to retrieve the url.
*
* This would be the preferred method, but the fsockopen implementation has the
* most overhead of all the HTTP transport implementations.
* This would be the preferred method, but the fsockopen implementation has the most overhead of all
* the HTTP transport implementations.
*
* @package WordPress
* @subpackage HTTP
@ -751,25 +612,35 @@ class WP_Http_Fsockopen {
$arrURL['port'] = apply_filters('http_request_default_port', 80);
}
} else {
$arrURL['port'] = apply_filters('http_request_port', $arrURL['port']);
$arrURL['port'] = apply_filters('http_request_port', $arrURL['port'], $arrURL['host']);
}
// There are issues with the HTTPS and SSL protocols that cause errors
// that can be safely ignored and should be ignored.
// There are issues with the HTTPS and SSL protocols that cause errors that can be safely
// ignored and should be ignored.
if ( true === $secure_transport )
$error_reporting = error_reporting(0);
$startDelay = time();
if ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === WP_DEBUG ) )
$handle = @fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
else
$handle = fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
$proxy = new WP_HTTP_Proxy();
if ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === WP_DEBUG ) ) {
if( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
$handle = @fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );
else
$handle = @fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
}
else {
if( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
$handle = fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );
else
$handle = fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
}
$endDelay = time();
// If the delay is greater than the timeout then fsockopen should't be
// used, because it will cause a long delay.
// If the delay is greater than the timeout then fsockopen should't be used, because it will
// cause a long delay.
$elapseDelay = ($endDelay-$startDelay) > $r['timeout'];
if ( true === $elapseDelay )
add_option( 'disable_fsockopen', $endDelay, null, true );
@ -777,8 +648,8 @@ class WP_Http_Fsockopen {
if ( false === $handle )
return new WP_Error('http_request_failed', $iError . ': ' . $strError);
// WordPress supports PHP 4.3, which has this function. Removed sanity
// checking for performance reasons.
// WordPress supports PHP 4.3, which has this function. Removed sanity checking for
// performance reasons.
stream_set_timeout($handle, $r['timeout'] );
$requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );
@ -786,7 +657,11 @@ class WP_Http_Fsockopen {
$strHeaders = '';
$strHeaders .= strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
if( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
$strHeaders .= 'Host: ' . $arrURL['host'] .':'. $arrURL['port'] . "\r\n";
else
$strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
if( isset($r['user-agent']) )
$strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
@ -798,6 +673,10 @@ class WP_Http_Fsockopen {
$strHeaders .= $r['headers'];
}
if ( $proxy->use_authentication() ) {
$strHeaders .= $proxy->authentication_header() . "\r\n";
}
$strHeaders .= "\r\n";
if ( ! is_null($r['body']) )
@ -866,9 +745,9 @@ class WP_Http_Fsockopen {
/**
* HTTP request method uses fopen function to retrieve the url.
*
* Requires PHP version greater than 4.3.0 for stream support. Does not allow
* for $context support, but should still be okay, to write the headers, before
* getting the response. Also requires that 'allow_url_fopen' to be enabled.
* Requires PHP version greater than 4.3.0 for stream support. Does not allow for $context support,
* but should still be okay, to write the headers, before getting the response. Also requires that
* 'allow_url_fopen' to be enabled.
*
* @package WordPress
* @subpackage HTTP
@ -878,8 +757,8 @@ class WP_Http_Fopen {
/**
* Send a HTTP request to a URI using fopen().
*
* This transport does not support sending of headers and body, therefore
* should not be used in the instances, where there is a body and headers.
* This transport does not support sending of headers and body, therefore should not be used in
* the instances, where there is a body and headers.
*
* Notes: Does not support non-blocking mode. Ignores 'redirection' option.
*
@ -984,8 +863,8 @@ class WP_Http_Fopen {
/**
* HTTP request method uses Streams to retrieve the url.
*
* Requires PHP 5.0+ and uses fopen with stream context. Requires that
* 'allow_url_fopen' PHP setting to be enabled.
* Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting
* to be enabled.
*
* Second preferred method for getting the URL, for PHP 5.
*
@ -1056,6 +935,17 @@ class WP_Http_Streams {
)
);
$proxy = new WP_HTTP_Proxy();
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
$arrContext['http']['proxy'] = 'tcp://'.$proxy->host().':'.$proxy->port();
// We only support Basic authentication so this will only work if that is what your proxy supports.
if ( $proxy->use_authentication() ) {
$arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n";
}
}
if ( ! is_null($r['body']) && ! empty($r['body'] ) )
$arrContext['http']['content'] = $r['body'];
@ -1069,8 +959,8 @@ class WP_Http_Streams {
if ( ! $handle)
return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
// WordPress supports PHP 4.3, which has this function. Removed sanity
// checking for performance reasons.
// WordPress supports PHP 4.3, which has this function. Removed sanity checking for
// performance reasons.
stream_set_timeout($handle, $r['timeout'] );
if ( ! $r['blocking'] ) {
@ -1122,10 +1012,9 @@ class WP_Http_Streams {
/**
* HTTP request method uses HTTP extension to retrieve the url.
*
* Requires the HTTP extension to be installed. This would be the preferred
* transport since it can handle a lot of the problems that forces the others to
* use the HTTP version 1.0. Even if PHP 5.2+ is being used, it doesn't mean
* that the HTTP extension will be enabled.
* Requires the HTTP extension to be installed. This would be the preferred transport since it can
* handle a lot of the problems that forces the others to use the HTTP version 1.0. Even if PHP 5.2+
* is being used, it doesn't mean that the HTTP extension will be enabled.
*
* @package WordPress
* @subpackage HTTP
@ -1161,7 +1050,7 @@ class WP_Http_ExtHTTP {
$r['user-agent'] = $r['headers']['user-agent'];
unset($r['headers']['user-agent']);
}
// Construct Cookie: header if any cookies are set
WP_Http::buildCookieHeader( $r );
@ -1194,6 +1083,20 @@ class WP_Http_ExtHTTP {
)
);
// The HTTP extensions offers really easy proxy support.
$proxy = new WP_HTTP_Proxy();
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
$options['proxyhost'] = $proxy->host();
$options['proxyport'] = $proxy->port();
$options['proxytype'] = HTTP_PROXY_HTTP;
if ( $proxy->use_authentication() ) {
$options['proxyauth'] = $proxy->authentication();
$options['proxyauthtype'] = HTTP_AUTH_BASIC;
}
}
if ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === WP_DEBUG ) ) //Emits warning level notices for max redirects and timeouts
$strResponse = @http_request($r['method'], $url, $r['body'], $options, $info);
else
@ -1282,16 +1185,40 @@ class WP_Http_Curl {
unset($r['headers']['user-agent']);
}
// Construct Cookie: header if any cookies are set
// Construct Cookie: header if any cookies are set.
WP_Http::buildCookieHeader( $r );
// cURL extension will sometimes fail when the timeout is less than 1 as
// it may round down to 0, which gives it unlimited timeout.
// cURL extension will sometimes fail when the timeout is less than 1 as it may round down
// to 0, which gives it unlimited timeout.
if ( $r['timeout'] > 0 && $r['timeout'] < 1 )
$r['timeout'] = 1;
$handle = curl_init();
// cURL offers really easy proxy support.
$proxy = new WP_HTTP_Proxy();
if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
curl_setopt( $handle, CURLOPT_HTTPPROXYTUNNEL, true );
$isPHP5 = version_compare(PHP_VERSION, '5.0.0', '>=');
if ( $isPHP5 ) {
curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );
curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );
curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );
} else {
curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() .':'. $proxy->port() );
}
if ( $proxy->use_authentication() ) {
if ( $isPHP5 )
curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_BASIC );
curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );
}
}
curl_setopt( $handle, CURLOPT_URL, $url);
curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, apply_filters('https_ssl_verify', $r['sslverify']) );
@ -1334,13 +1261,11 @@ class WP_Http_Curl {
else
curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
// Cookies are not handled by the HTTP API currently. Allow for plugin
// authors to handle it themselves... Although, it is somewhat pointless
// without some reference.
// Cookies are not handled by the HTTP API currently. Allow for plugin authors to handle it
// themselves... Although, it is somewhat pointless without some reference.
do_action_ref_array( 'http_api_curl', array(&$handle) );
// We don't need to return the body, so don't. Just execute request
// and return.
// We don't need to return the body, so don't. Just execute request and return.
if ( ! $r['blocking'] ) {
curl_exec( $handle );
curl_close( $handle );
@ -1350,6 +1275,8 @@ class WP_Http_Curl {
$theResponse = curl_exec( $handle );
if ( !empty($theResponse) ) {
$parts = explode("\r\n\r\n", $theResponse);
$headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE);
$theHeaders = trim( substr($theResponse, 0, $headerLength) );
$theBody = substr( $theResponse, $headerLength );
@ -1396,13 +1323,189 @@ class WP_Http_Curl {
}
}
/**
* Adds Proxy support to the WordPress HTTP API.
*
* 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.
*
* 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 blog host in this list, because they will not be passed
* through the proxy.</li>
* </ol>
*
* An example can be as seen below.
* <code>
* define('WP_PROXY_HOST', '192.168.84.101');
* define('WP_PROXY_PORT', '8080');
* define('WP_PROXY_BYPASS_HOSTS', array('localhost', 'www.example.com'));
* </code>
*
* @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress.
* @since 2.8
*/
class WP_HTTP_Proxy {
function WP_HTTP_Proxy() {
$this->__construct();
}
function __construct() {
}
/**
* Whether proxy connection should be used.
*
* @since 2.8
* @use WP_PROXY_HOST
* @use WP_PROXY_PORT
*
* @return bool
*/
function is_enabled() {
return ( defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT') );
}
/**
* Whether authentication should be used.
*
* @since 2.8
* @use WP_PROXY_USERNAME
* @use WP_PROXY_PASSWORD
*
* @return bool
*/
function use_authentication() {
return ( defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD') );
}
/**
* Retrieve the host for the proxy server.
*
* @since 2.8
*
* @return string
*/
function host() {
if( defined('WP_PROXY_HOST') )
return WP_PROXY_HOST;
return '';
}
/**
* Retrieve the port for the proxy server.
*
* @since 2.8
*
* @return string
*/
function port() {
if( defined('WP_PROXY_PORT') )
return WP_PROXY_PORT;
return '';
}
/**
* Retrieve the username for proxy authentication.
*
* @since 2.8
*
* @return string
*/
function username() {
if( defined('WP_PROXY_USERNAME') )
return WP_PROXY_USERNAME;
return '';
}
/**
* Retrieve the password for proxy authentication.
*
* @since 2.8
*
* @return string
*/
function password() {
if( defined('WP_PROXY_PASSWORD') )
return WP_PROXY_PASSWORD;
return '';
}
/**
* Retrieve authentication string for proxy authentication.
*
* @since 2.8
*
* @return string
*/
function authentication() {
return $this->username() .':'. $this->password();
}
/**
* Retrieve header string for proxy authentication.
*
* @since 2.8
*
* @return string
*/
function authentication_header() {
return 'Proxy-Authentication: Basic '. base64_encode( $this->authentication() );
}
/**
* Whether URL should be sent through the proxy server.
*
* We want to keep localhost and the blog 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.
*
* @uses WP_PROXY_BYPASS_HOSTS
* @since unknown
*
* @param string $uri URI to check.
* @return bool True, to send through the proxy and false if, the proxy should not be used.
*/
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 blogs, 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_bloginfo('site_url') );
if ( $uri == 'localhost' || $uri == $home['host'] )
return false;
if ( defined('WP_PROXY_BYPASS_HOSTS') && is_array( WP_PROXY_BYPASS_HOSTS ) && in_array( $check['host'], WP_PROXY_BYPASS_HOSTS ) ) {
return false;
}
return true;
}
}
/**
* Internal representation of a single cookie.
*
* Returned cookies are represented using this class, and when cookies are
* set, if they are not already a WP_Http_Cookie() object, then they are turned
* into one.
* Returned cookies are represented using this class, and when cookies are set, if they are not
* already a WP_Http_Cookie() object, then they are turned into one.
*
* @todo The WordPress convention is to use underscores instead of camelCase for function and method
* names. Need to switch to use underscores instead for the methods.
@ -1597,6 +1700,134 @@ class WP_Http_Cookie {
}
}
/**
* Implementation for deflate and gzip transfer encodings.
*
* Includes RFC 1950, RFC 1951, and RFC 1952.
*
* @since 2.8
* @package WordPress
* @subpackage HTTP
*/
class WP_Http_Encoding {
/**
* Compress raw string using the deflate format.
*
* Supports the RFC 1951 standard.
*
* @since 2.8
*
* @param string $raw String to compress.
* @param int $level Optional, default is 9. Compression level, 9 is highest.
* @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
* @return string|bool False on failure.
*/
function compress( $raw, $level = 9, $supports = null ) {
return gzdeflate( $raw, $level );
}
/**
* Decompression of deflated string.
*
* Will attempt to decompress using the RFC 1950 standard, and if that fails
* then the RFC 1951 standard deflate will be attempted. Finally, the RFC
* 1952 standard gzip decode will be attempted. If all fail, then the
* original compressed string will be returned.
*
* @since 2.8
*
* @param string $compressed String to decompress.
* @param int $length The optional length of the compressed data.
* @return string|bool False on failure.
*/
function decompress( $compressed, $length = null ) {
$decompressed = gzinflate( $compressed );
if( false !== $decompressed )
return $decompressed;
$decompressed = gzuncompress( $compressed );
if( false !== $decompressed )
return $decompressed;
$decompressed = gzdecode( $compressed );
if( false !== $decompressed )
return $decompressed;
return $compressed;
}
/**
* What encoding types to accept and their priority values.
*
* @since 2.8
*
* @return string Types of encoding to accept.
*/
function accept_encoding() {
$type = array();
if( function_exists( 'gzinflate' ) )
$type[] = 'deflate;q=1.0';
if( function_exists( 'gzuncompress' ) )
$type[] = 'compress;q=0.5';
if( function_exists( 'gzdecode' ) )
$type[] = 'gzip;q=0.5';
return implode(', ', $type);
}
/**
* What enconding the content used when it was compressed to send in the headers.
*
* @since 2.8
*
* @return string Content-Encoding string to send in the header.
*/
function content_encoding() {
return 'deflate';
}
/**
* Whether the content be decoded based on the headers.
*
* @since 2.8
*
* @param array|string $headers All of the available headers.
* @return bool
*/
function should_decode($headers) {
if( is_array( $headers ) ) {
if( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )
return true;
} else if( is_string( $headers ) ) {
return ( stripos($headers, 'content-encoding:') !== false );
}
return false;
}
/**
* Whether decompression and compression are supported by the PHP version.
*
* Each function is tested instead of checking for the zlib extension, to
* ensure that the functions all exist in the PHP version and aren't
* disabled.
*
* @since 2.8
*
* @return bool
*/
function is_available() {
return ( function_exists('gzuncompress') || function_exists('gzdeflate') ||
function_exists('gzinflate') );
}
}
/**
* Returns the initialized WP_Http Object
*