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Ticket #4011: 4011.3.diff

File 4011.3.diff, 30.9 KB (added by jacobsantos, 9 years ago)

Update patch for current trunk

  • http.php

     
    1313 */
    1414
    1515/**
    16  * Implementation for deflate and gzip transfer encodings.
    17  *
    18  * Includes RFC 1950, RFC 1951, and RFC 1952.
    19  *
    20  * @since unknown
    21  * @package WordPress
    22  * @subpackage HTTP
    23  */
    24 class WP_Http_Encoding {
    25 
    26         /**
    27          * Compress raw string using the deflate format.
    28          *
    29          * Supports the RFC 1951 standard.
    30          *
    31          * @since unknown
    32          *
    33          * @param string $raw String to compress.
    34          * @param int $level Optional, default is 9. Compression level, 9 is highest.
    35          * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
    36          * @return string|bool False on failure.
    37          */
    38         function compress( $raw, $level = 9, $supports = null ) {
    39                 return gzdeflate( $raw, $level );
    40         }
    41 
    42         /**
    43          * Decompression of deflated string.
    44          *
    45          * Will attempt to decompress using the RFC 1950 standard, and if that fails
    46          * then the RFC 1951 standard deflate will be attempted. Finally, the RFC
    47          * 1952 standard gzip decode will be attempted. If all fail, then the
    48          * original compressed string will be returned.
    49          *
    50          * @since unknown
    51          *
    52          * @param string $compressed String to decompress.
    53          * @param int $length The optional length of the compressed data.
    54          * @return string|bool False on failure.
    55          */
    56         function decompress( $compressed, $length = null ) {
    57                 $decompressed = gzinflate( $compressed );
    58 
    59                 if( false !== $decompressed )
    60                         return $decompressed;
    61 
    62                 $decompressed = gzuncompress( $compressed );
    63 
    64                 if( false !== $decompressed )
    65                         return $decompressed;
    66 
    67                 $decompressed = gzdecode( $compressed );
    68 
    69                 if( false !== $decompressed )
    70                         return $decompressed;
    71 
    72                 return $compressed;
    73         }
    74 
    75         /**
    76          * What encoding types to accept and their priority values.
    77          *
    78          * @since unknown
    79          *
    80          * @return string Types of encoding to accept.
    81          */
    82         function accept_encoding() {
    83                 $type = array();
    84                 if( function_exists( 'gzinflate' ) )
    85                         $type[] = 'deflate;q=1.0';
    86 
    87                 if( function_exists( 'gzuncompress' ) )
    88                         $type[] = 'compress;q=0.5';
    89 
    90                 if( function_exists( 'gzdecode' ) )
    91                         $type[] = 'gzip;q=0.5';
    92 
    93                 return implode(', ', $type);
    94         }
    95 
    96         /**
    97          * What enconding the content used when it was compressed to send in the headers.
    98          *
    99          * @since unknown
    100          *
    101          * @return string Content-Encoding string to send in the header.
    102          */
    103         function content_encoding() {
    104                 return 'deflate';
    105         }
    106 
    107         /**
    108          * Whether the content be decoded based on the headers.
    109          *
    110          * @since unknown
    111          *
    112          * @param array|string $headers All of the available headers.
    113          * @return bool
    114          */
    115         function should_decode($headers) {
    116                 if( is_array( $headers ) ) {
    117                         if( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )
    118                                 return true;
    119                 } else if( is_string( $headers ) ) {
    120                         return ( stripos($headers, 'content-encoding:') !== false );
    121                 }
    122 
    123                 return false;
    124         }
    125 
    126         /**
    127          * Whether decompression and compression are supported by the PHP version.
    128          *
    129          * Each function is tested instead of checking for the zlib extension, to
    130          * ensure that the functions all exist in the PHP version and aren't
    131          * disabled.
    132          *
    133          * @since unknown
    134          *
    135          * @return bool
    136          */
    137         function is_available() {
    138                 return ( function_exists('gzuncompress') || function_exists('gzdeflate') ||
    139                                  function_exists('gzinflate') );
    140         }
    141 }
    142 
    143 /**
    14416 * WordPress HTTP Class for managing HTTP Transports and making HTTP requests.
    14517 *
    146  * This class is called for the functionality of making HTTP requests and should
    147  * replace Snoopy functionality, eventually. There is no available functionality
    148  * to add HTTP transport implementations, since most of the HTTP transports are
    149  * added and available for use.
     18 * This class is called for the functionality of making HTTP requests and should replace Snoopy
     19 * functionality, eventually. There is no available functionality to add HTTP transport
     20 * implementations, since most of the HTTP transports are added and available for use.
    15021 *
    151  * The exception is that cURL is not available as a transport and lacking an
    152  * implementation. It will be added later and should be a patch on the WordPress
    153  * Trac.
     22 * The exception is that cURL is not available as a transport and lacking an implementation. It will
     23 * be added later and should be a patch on the WordPress Trac.
    15424 *
    155  * There are no properties, because none are needed and for performance reasons.
    156  * Some of the functions are static and while they do have some overhead over
    157  * functions in PHP4, the purpose is maintainability. When PHP5 is finally the
    158  * requirement, it will be easy to add the static keyword to the code. It is not
    159  * as easy to convert a function to a method after enough code uses the old way.
     25 * There are no properties, because none are needed and for performance reasons. Some of the
     26 * functions are static and while they do have some overhead over functions in PHP4, the purpose is
     27 * maintainability. When PHP5 is finally the requirement, it will be easy to add the static keyword
     28 * to the code. It is not as easy to convert a function to a method after enough code uses the old
     29 * way.
    16030 *
    161  * Debugging includes several actions, which pass different variables for
    162  * debugging the HTTP API.
     31 * Debugging includes several actions, which pass different variables for debugging the HTTP API.
    16332 *
    164  * <strong>http_transport_get_debug</strong> - gives working, nonblocking, and
    165  * blocking transports.
     33 * <strong>http_transport_get_debug</strong> - gives working, nonblocking, and blocking transports.
    16634 *
    167  * <strong>http_transport_post_debug</strong> - gives working, nonblocking, and
    168  * blocking transports.
     35 * <strong>http_transport_post_debug</strong> - gives working, nonblocking, and blocking transports.
    16936 *
    17037 * @package WordPress
    17138 * @subpackage HTTP
     
    311178        /**
    312179         * Send a HTTP request to a URI.
    313180         *
    314          * The body and headers are part of the arguments. The 'body' argument is
    315          * for the body and will accept either a string or an array. The 'headers'
    316          * argument should be an array, but a string is acceptable. If the 'body'
    317          * argument is an array, then it will automatically be escaped using
    318          * http_build_query().
     181         * The body and headers are part of the arguments. The 'body' argument is for the body and will
     182         * accept either a string or an array. The 'headers' argument should be an array, but a string
     183         * is acceptable. If the 'body' argument is an array, then it will automatically be escaped
     184         * using http_build_query().
    319185         *
    320          * The only URI that are supported in the HTTP Transport implementation are
    321          * the HTTP and HTTPS protocols. HTTP and HTTPS are assumed so the server
    322          * might not know how to handle the send headers. Other protocols are
    323          * unsupported and most likely will fail.
     186         * The only URI that are supported in the HTTP Transport implementation are the HTTP and HTTPS
     187         * protocols. HTTP and HTTPS are assumed so the server might not know how to handle the send
     188         * headers. Other protocols are unsupported and most likely will fail.
    324189         *
    325          * The defaults are 'method', 'timeout', 'redirection', 'httpversion',
    326          * 'blocking' and 'user-agent'.
     190         * The defaults are 'method', 'timeout', 'redirection', 'httpversion', 'blocking' and
     191         * 'user-agent'.
    327192         *
    328          * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports
    329          * technically allow others, but should not be assumed. The 'timeout' is
    330          * used to sent how long the connection should stay open before failing when
    331          * no response. 'redirection' is used to track how many redirects were taken
    332          * and used to sent the amount for other transports, but not all transports
     193         * Accepted 'method' values are 'GET', 'POST', and 'HEAD', some transports technically allow
     194         * others, but should not be assumed. The 'timeout' is used to sent how long the connection
     195         * should stay open before failing when no response. 'redirection' is used to track how many
     196         * redirects were taken and used to sent the amount for other transports, but not all transports
    333197         * accept setting that value.
    334198         *
    335          * The 'httpversion' option is used to sent the HTTP version and accepted
    336          * values are '1.0', and '1.1' and should be a string. Version 1.1 is not
    337          * supported, because of chunk response. The 'user-agent' option is the
    338          * user-agent and is used to replace the default user-agent, which is
     199         * The 'httpversion' option is used to sent the HTTP version and accepted values are '1.0', and
     200         * '1.1' and should be a string. Version 1.1 is not supported, because of chunk response. The
     201         * 'user-agent' option is the user-agent and is used to replace the default user-agent, which is
    339202         * 'WordPress/WP_Version', where WP_Version is the value from $wp_version.
    340203         *
    341          * 'blocking' is the default, which is used to tell the transport, whether
    342          * it should halt PHP while it performs the request or continue regardless.
    343          * Actually, that isn't entirely correct. Blocking mode really just means
    344          * whether the fread should just pull what it can whenever it gets bytes or
    345          * if it should wait until it has enough in the buffer to read or finishes
    346          * reading the entire content. It doesn't actually always mean that PHP will
    347          * continue going after making the request.
     204         * 'blocking' is the default, which is used to tell the transport, whether it should halt PHP
     205         * while it performs the request or continue regardless. Actually, that isn't entirely correct.
     206         * Blocking mode really just means whether the fread should just pull what it can whenever it
     207         * gets bytes or if it should wait until it has enough in the buffer to read or finishes reading
     208         * the entire content. It doesn't actually always mean that PHP will continue going after making
     209         * the request.
    348210         *
    349211         * @access public
    350212         * @since 2.7.0
     
    569431
    570432                return array('response' => $response, 'headers' => $newheaders, 'cookies' => $cookies);
    571433        }
    572        
     434
    573435        /**
    574436         * Takes the arguments for a ::request() and checks for the cookie array.
    575437         *
     
    597459        /**
    598460         * Decodes chunk transfer-encoding, based off the HTTP 1.1 specification.
    599461         *
    600          * Based off the HTTP http_encoding_dechunk function. Does not support
    601          * UTF-8. Does not support returning footer headers. Shouldn't be too
    602          * difficult to support it though.
     462         * Based off the HTTP http_encoding_dechunk function. Does not support UTF-8. Does not support
     463         * returning footer headers. Shouldn't be too difficult to support it though.
    603464         *
    604465         * @todo Add support for footer chunked headers.
    605466         * @access public
     
    651512         * and this will only allow localhost and your blog to make requests. The constant
    652513         * WP_ACCESSABLE_HOSTS will allow additional hosts to go through for requests.
    653514         *
    654          * @since unknown
     515         * @since 2.8.0
    655516         * @link http://core.trac.wordpress.org/ticket/8927 Allow preventing external requests.
    656517         *
    657518         * @param string $uri URI of url.
     
    693554/**
    694555 * HTTP request method uses fsockopen function to retrieve the url.
    695556 *
    696  * This would be the preferred method, but the fsockopen implementation has the
    697  * most overhead of all the HTTP transport implementations.
     557 * This would be the preferred method, but the fsockopen implementation has the most overhead of all
     558 * the HTTP transport implementations.
    698559 *
    699560 * @package WordPress
    700561 * @subpackage HTTP
     
    751612                                $arrURL['port'] = apply_filters('http_request_default_port', 80);
    752613                        }
    753614                } else {
    754                         $arrURL['port'] = apply_filters('http_request_port', $arrURL['port']);
     615                        $arrURL['port'] = apply_filters('http_request_port', $arrURL['port'], $arrURL['host']);
    755616                }
    756617
    757                 // There are issues with the HTTPS and SSL protocols that cause errors
    758                 // that can be safely ignored and should be ignored.
     618                // There are issues with the HTTPS and SSL protocols that cause errors that can be safely
     619                // ignored and should be ignored.
    759620                if ( true === $secure_transport )
    760621                        $error_reporting = error_reporting(0);
    761622
    762623                $startDelay = time();
    763624
    764                 if ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === WP_DEBUG ) )
    765                         $handle = @fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
    766                 else
    767                         $handle = fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
     625                $proxy = new WP_HTTP_Proxy();
    768626
     627                if ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === WP_DEBUG ) ) {
     628                        if( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
     629                                $handle = @fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );
     630                        else
     631                                $handle = @fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
     632                }
     633                else {
     634                        if( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
     635                                $handle = fsockopen($proxy->host(), $proxy->port(), $iError, $strError, $r['timeout'] );
     636                        else
     637                                $handle = fsockopen($arrURL['host'], $arrURL['port'], $iError, $strError, $r['timeout'] );
     638                }
     639
    769640                $endDelay = time();
    770641
    771                 // If the delay is greater than the timeout then fsockopen should't be
    772                 // used, because it will cause a long delay.
     642                // If the delay is greater than the timeout then fsockopen should't be used, because it will
     643                // cause a long delay.
    773644                $elapseDelay = ($endDelay-$startDelay) > $r['timeout'];
    774645                if ( true === $elapseDelay )
    775646                        add_option( 'disable_fsockopen', $endDelay, null, true );
     
    777648                if ( false === $handle )
    778649                        return new WP_Error('http_request_failed', $iError . ': ' . $strError);
    779650
    780                 // WordPress supports PHP 4.3, which has this function. Removed sanity
    781                 // checking for performance reasons.
     651                // WordPress supports PHP 4.3, which has this function. Removed sanity checking for
     652                // performance reasons.
    782653                stream_set_timeout($handle, $r['timeout'] );
    783654
    784655                $requestPath = $arrURL['path'] . ( isset($arrURL['query']) ? '?' . $arrURL['query'] : '' );
     
    786657
    787658                $strHeaders = '';
    788659                $strHeaders .= strtoupper($r['method']) . ' ' . $requestPath . ' HTTP/' . $r['httpversion'] . "\r\n";
    789                 $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
    790660
     661                if( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) )
     662                        $strHeaders .= 'Host: ' . $arrURL['host'] .':'. $arrURL['port'] . "\r\n";
     663                else
     664                        $strHeaders .= 'Host: ' . $arrURL['host'] . "\r\n";
     665
    791666                if( isset($r['user-agent']) )
    792667                        $strHeaders .= 'User-agent: ' . $r['user-agent'] . "\r\n";
    793668
     
    798673                        $strHeaders .= $r['headers'];
    799674                }
    800675
     676                if ( $proxy->use_authentication() ) {
     677                        $strHeaders .= $proxy->authentication_header() . "\r\n";
     678                }
     679
    801680                $strHeaders .= "\r\n";
    802681
    803682                if ( ! is_null($r['body']) )
     
    866745/**
    867746 * HTTP request method uses fopen function to retrieve the url.
    868747 *
    869  * Requires PHP version greater than 4.3.0 for stream support. Does not allow
    870  * for $context support, but should still be okay, to write the headers, before
    871  * getting the response. Also requires that 'allow_url_fopen' to be enabled.
     748 * Requires PHP version greater than 4.3.0 for stream support. Does not allow for $context support,
     749 * but should still be okay, to write the headers, before getting the response. Also requires that
     750 * 'allow_url_fopen' to be enabled.
    872751 *
    873752 * @package WordPress
    874753 * @subpackage HTTP
     
    878757        /**
    879758         * Send a HTTP request to a URI using fopen().
    880759         *
    881          * This transport does not support sending of headers and body, therefore
    882          * should not be used in the instances, where there is a body and headers.
     760         * This transport does not support sending of headers and body, therefore should not be used in
     761         * the instances, where there is a body and headers.
    883762         *
    884763         * Notes: Does not support non-blocking mode. Ignores 'redirection' option.
    885764         *
     
    984863/**
    985864 * HTTP request method uses Streams to retrieve the url.
    986865 *
    987  * Requires PHP 5.0+ and uses fopen with stream context. Requires that
    988  * 'allow_url_fopen' PHP setting to be enabled.
     866 * Requires PHP 5.0+ and uses fopen with stream context. Requires that 'allow_url_fopen' PHP setting
     867 * to be enabled.
    989868 *
    990869 * Second preferred method for getting the URL, for PHP 5.
    991870 *
     
    1056935                        )
    1057936                );
    1058937
     938                $proxy = new WP_HTTP_Proxy();
     939
     940                if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
     941                        // WTF happens when the user stupidly puts http:// in the host? Bad things. Really,
     942                        // really bad things happen. Not exactly unleashing demons from hell, but you know.
     943                        // Just as bad probably. Actually, none of the other transports should work in that case
     944                        // so no sanitization is done. If there is, it should be done in the
     945                        // WP_HTTP_Proxy::host().
     946                        //
     947                        // On second thought, why is it tcp protocol? Why not http? What if the proxy is http
     948                        // and not tcp? Even though, technically, http is tcp, but just a specialized form of
     949                        // tcp. Behavior is undefined, so it is probably good that not a lot of users will be
     950                        // affected by FUBAR behavior.
     951                        //
     952                        // Is it another WTF? that this multiline comment isn't using multiline comment syntax?
     953                        $arrContext['http']['proxy'] = 'tcp://'.$proxy->host().':'.$proxy->port();
     954
     955                        // Yeah, this may or may not work. Good luck.
     956                        if ( $proxy->use_authentication() ) {
     957                                $arrContext['http']['header'] .= $proxy->authentication_header() . "\r\n";
     958                        }
     959                }
     960
    1059961                if ( ! is_null($r['body']) && ! empty($r['body'] ) )
    1060962                        $arrContext['http']['content'] = $r['body'];
    1061963
     
    1069971                if ( ! $handle)
    1070972                        return new WP_Error('http_request_failed', sprintf(__('Could not open handle for fopen() to %s'), $url));
    1071973
    1072                 // WordPress supports PHP 4.3, which has this function. Removed sanity
    1073                 // checking for performance reasons.
     974                // WordPress supports PHP 4.3, which has this function. Removed sanity checking for
     975                // performance reasons.
    1074976                stream_set_timeout($handle, $r['timeout'] );
    1075977
    1076978                if ( ! $r['blocking'] ) {
     
    11221024/**
    11231025 * HTTP request method uses HTTP extension to retrieve the url.
    11241026 *
    1125  * Requires the HTTP extension to be installed. This would be the preferred
    1126  * transport since it can handle a lot of the problems that forces the others to
    1127  * use the HTTP version 1.0. Even if PHP 5.2+ is being used, it doesn't mean
    1128  * that the HTTP extension will be enabled.
     1027 * Requires the HTTP extension to be installed. This would be the preferred transport since it can
     1028 * handle a lot of the problems that forces the others to use the HTTP version 1.0. Even if PHP 5.2+
     1029 * is being used, it doesn't mean that the HTTP extension will be enabled.
    11291030 *
    11301031 * @package WordPress
    11311032 * @subpackage HTTP
     
    11611062                        $r['user-agent'] = $r['headers']['user-agent'];
    11621063                        unset($r['headers']['user-agent']);
    11631064                }
    1164                
     1065
    11651066                // Construct Cookie: header if any cookies are set
    11661067                WP_Http::buildCookieHeader( $r );
    11671068
     
    11941095                        )
    11951096                );
    11961097
     1098                // The HTTP extensions offers really easy proxy support.
     1099                $proxy = new WP_HTTP_Proxy();
     1100
     1101                if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
     1102                        $options['proxyhost'] = $proxy->host();
     1103                        $options['proxyport'] = $proxy->port();
     1104                        $options['proxytype'] = HTTP_PROXY_HTTP;
     1105
     1106                        if ( $proxy->use_authentication() ) {
     1107                                $options['proxyauth'] = $proxy->authentication();
     1108                                $options['proxyauthtype'] = HTTP_AUTH_BASIC;
     1109                        }
     1110                }
     1111
    11971112                if ( !defined('WP_DEBUG') || ( defined('WP_DEBUG') && false === WP_DEBUG ) ) //Emits warning level notices for max redirects and timeouts
    11981113                        $strResponse = @http_request($r['method'], $url, $r['body'], $options, $info);
    11991114                else
     
    12821197                        unset($r['headers']['user-agent']);
    12831198                }
    12841199
    1285                 // Construct Cookie: header if any cookies are set
     1200                // Construct Cookie: header if any cookies are set.
    12861201                WP_Http::buildCookieHeader( $r );
    12871202
    1288                 // cURL extension will sometimes fail when the timeout is less than 1 as
    1289                 // it may round down to 0, which gives it unlimited timeout.
     1203                // cURL extension will sometimes fail when the timeout is less than 1 as it may round down
     1204                // to 0, which gives it unlimited timeout.
    12901205                if ( $r['timeout'] > 0 && $r['timeout'] < 1 )
    12911206                        $r['timeout'] = 1;
    12921207
    12931208                $handle = curl_init();
    12941209
     1210                // cURL offers really easy proxy support.
     1211                $proxy = new WP_HTTP_Proxy();
     1212
     1213                if ( $proxy->is_enabled() && $proxy->send_through_proxy( $url ) ) {
     1214                        curl_setopt( $handle, CURLOPT_HTTPPROXYTUNNEL, true );
     1215
     1216                        $isPHP5 = version_compare(PHP_VERSION, '5.0.0', '>=');
     1217
     1218                        if ( $isPHP5 ) {
     1219                                curl_setopt( $handle, CURLOPT_PROXYTYPE, CURLPROXY_HTTP );
     1220                                curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() );
     1221                                curl_setopt( $handle, CURLOPT_PROXYPORT, $proxy->port() );
     1222                        } else {
     1223                                curl_setopt( $handle, CURLOPT_PROXY, $proxy->host() .':'. $proxy->port() );
     1224                        }
     1225
     1226                        if ( $proxy->use_authentication() ) {
     1227                                if ( $isPHP5 )
     1228                                        curl_setopt( $handle, CURLOPT_PROXYAUTH, CURLAUTH_BASIC );
     1229
     1230                                curl_setopt( $handle, CURLOPT_PROXYUSERPWD, $proxy->authentication() );
     1231                        }
     1232                }
     1233
    12951234                curl_setopt( $handle, CURLOPT_URL, $url);
    12961235                curl_setopt( $handle, CURLOPT_RETURNTRANSFER, true );
    12971236                curl_setopt( $handle, CURLOPT_SSL_VERIFYHOST, apply_filters('https_ssl_verify', $r['sslverify']) );
     
    13341273                else
    13351274                        curl_setopt( $handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1 );
    13361275
    1337                 // Cookies are not handled by the HTTP API currently. Allow for plugin
    1338                 // authors to handle it themselves... Although, it is somewhat pointless
    1339                 // without some reference.
     1276                // Cookies are not handled by the HTTP API currently. Allow for plugin authors to handle it
     1277                // themselves... Although, it is somewhat pointless without some reference.
    13401278                do_action_ref_array( 'http_api_curl', array(&$handle) );
    13411279
    1342                 // We don't need to return the body, so don't. Just execute request
    1343                 // and return.
     1280                // We don't need to return the body, so don't. Just execute request and return.
    13441281                if ( ! $r['blocking'] ) {
    13451282                        curl_exec( $handle );
    13461283                        curl_close( $handle );
     
    13501287                $theResponse = curl_exec( $handle );
    13511288
    13521289                if ( !empty($theResponse) ) {
     1290                        $parts = explode("\r\n\r\n", $theResponse);
     1291                       
    13531292                        $headerLength = curl_getinfo($handle, CURLINFO_HEADER_SIZE);
    13541293                        $theHeaders = trim( substr($theResponse, 0, $headerLength) );
    13551294                        $theBody = substr( $theResponse, $headerLength );
     
    13891328         * @return boolean False means this class can not be used, true means it can.
    13901329         */
    13911330        function test($args = array()) {
    1392                 if ( function_exists('curl_init') && function_exists('curl_exec') )
     1331                if ( function_exists('curl_init') && function_exists('curl_exec') && apply_filters('use_curl_transport', true) )
    13931332                        return  apply_filters('use_curl_transport', true);
    13941333
    13951334                return false;
    13961335        }
    13971336}
    13981337
     1338/**
     1339 * Adds Proxy support to the WordPress HTTP API.
     1340 *
     1341 * Proxy support is fringe enough that it isn't support in WordPress by default, meaning no plans
     1342 * were made to implement it. Most WordPress users are not going to benefit with its support, but
     1343 * enough people have made a stink out of the lack of it that it should be supported.
     1344 *
     1345 * There are caveats to proxy support. It requires that defines be made in the wp-config.php file to
     1346 * enable proxy support. There are also a few filters that plugins can hook into for some of the
     1347 * constants.
     1348 *
     1349 * The constants are as follows:
     1350 * <ol>
     1351 * <li>WP_PROXY_HOST - Enable proxy support and host for connecting.</li>
     1352 * <li>WP_PROXY_PORT - Proxy port for connection. No default, must be defined.</li>
     1353 * <li>WP_PROXY_USERNAME - Proxy username, if it requires authentication.</li>
     1354 * <li>WP_PROXY_PASSWORD - Proxy password, if it requires authentication.</li>
     1355 * <li>WP_PROXY_BYPASS_HOSTS - Will prevent the hosts in this list from going through the proxy.
     1356 * You do not need to have localhost and the blog host in this list, because they will not be passed
     1357 * through the proxy.</li>
     1358 * </ol>
     1359 *
     1360 * An example can be as seen below.
     1361 * <code>
     1362 * define('WP_PROXY_HOST', '192.168.84.101');
     1363 * define('WP_PROXY_PORT', '8080');
     1364 * define('WP_PROXY_BYPASS_HOSTS', array('localhost', 'www.example.com'));
     1365 * </code>
     1366 *
     1367 * @link http://core.trac.wordpress.org/ticket/4011 Proxy support ticket in WordPress.
     1368 * @since unknown
     1369 */
     1370class WP_HTTP_Proxy {
    13991371
     1372        function WP_HTTP_Proxy() {
     1373                $this->__construct();
     1374        }
     1375
     1376        function __construct() {
     1377               
     1378        }
     1379
     1380        /**
     1381         * Whether proxy connection should be used.
     1382         *
     1383         * @since unknown
     1384         * @use WP_PROXY_HOST
     1385         * @use WP_PROXY_PORT
     1386         *
     1387         * @return bool
     1388         */
     1389        function is_enabled() {
     1390                return ( defined('WP_PROXY_HOST') && defined('WP_PROXY_PORT') );
     1391        }
     1392
     1393        /**
     1394         * Whether authentication should be used.
     1395         *
     1396         * @since unknown
     1397         * @use WP_PROXY_USERNAME
     1398         * @use WP_PROXY_PASSWORD
     1399         *
     1400         * @return bool
     1401         */
     1402        function use_authentication() {
     1403                return ( defined('WP_PROXY_USERNAME') && defined('WP_PROXY_PASSWORD') );
     1404        }
     1405
     1406        /**
     1407         * Retrieve the host for the proxy server.
     1408         *
     1409         * @since unknown
     1410         *
     1411         * @return string
     1412         */
     1413        function host() {
     1414                if( defined('WP_PROXY_HOST') )
     1415                        return WP_PROXY_HOST;
     1416
     1417                return '';
     1418        }
     1419
     1420        /**
     1421         * Retrieve the port for the proxy server.
     1422         *
     1423         * @since unknown
     1424         *
     1425         * @return string
     1426         */
     1427        function port() {
     1428                if( defined('WP_PROXY_PORT') )
     1429                        return WP_PROXY_PORT;
     1430
     1431                return '';
     1432        }
     1433
     1434        /**
     1435         * Retrieve the username for proxy authentication.
     1436         *
     1437         * @since unknown
     1438         *
     1439         * @return string
     1440         */
     1441        function username() {
     1442                if( defined('WP_PROXY_USERNAME') )
     1443                        return WP_PROXY_USERNAME;
     1444
     1445                return '';
     1446        }
     1447
     1448        /**
     1449         * Retrieve the password for proxy authentication.
     1450         *
     1451         * @since unknown
     1452         *
     1453         * @return string
     1454         */
     1455        function password() {
     1456                if( defined('WP_PROXY_PASSWORD') )
     1457                        return WP_PROXY_PASSWORD;
     1458
     1459                return '';
     1460        }
     1461
     1462        /**
     1463         * Retrieve authentication string for proxy authentication.
     1464         *
     1465         * @since unknown
     1466         *
     1467         * @return string
     1468         */
     1469        function authentication() {
     1470                return $this->username() .':'. $this->password();
     1471        }
     1472
     1473        /**
     1474         * Retrieve header string for proxy authentication.
     1475         *
     1476         * @since unknown
     1477         *
     1478         * @return string
     1479         */
     1480        function authentication_header() {
     1481                return 'Proxy-Authentication: Basic '. base64_encode( $this->authentication() );
     1482        }
     1483
     1484        /**
     1485         * Whether URL should be sent through the proxy server.
     1486         *
     1487         * We want to keep localhost and the blog URL from being sent through the proxy server, because
     1488         * some proxies can not handle this. We also have the constant available for defining other
     1489         * hosts that won't be sent through the proxy.
     1490         *
     1491         * @uses WP_PROXY_BYPASS_HOSTS
     1492         * @since unknown
     1493         *
     1494         * @param string $uri URI to check.
     1495         * @return bool True, to send through the proxy and false if, the proxy should not be used.
     1496         */
     1497        function send_through_proxy( $uri ) {
     1498                // parse_url() only handles http, https type URLs, and will emit E_WARNING on failure.
     1499                // This will be displayed on blogs, which is not reasonable.
     1500                $check = @parse_url($uri);
     1501
     1502                // Malformed URL, can not process, but this could mean ssl, so let through anyway.
     1503                if( $check === false )
     1504                        return true;
     1505
     1506                $home = parse_url( get_bloginfo('site_url') );
     1507
     1508                if ( $uri == 'localhost' || $uri == $home['host'] )
     1509                        return false;
     1510
     1511                if ( defined('WP_PROXY_BYPASS_HOSTS') && is_array( WP_PROXY_BYPASS_HOSTS ) && in_array( $check['host'], WP_PROXY_BYPASS_HOSTS ) ) {
     1512                                return false;
     1513                }
     1514
     1515                return true;
     1516        }
     1517}
     1518
     1519
    14001520/**
    14011521 * Internal representation of a single cookie.
    14021522 *
    1403  * Returned cookies are represented using this class, and when cookies are
    1404  * set, if they are not already a WP_Http_Cookie() object, then they are turned
    1405  * into one.
     1523 * Returned cookies are represented using this class, and when cookies are set, if they are not
     1524 * already a WP_Http_Cookie() object, then they are turned into one.
    14061525 *
    14071526 * @todo The WordPress convention is to use underscores instead of camelCase for function and method
    14081527 * names. Need to switch to use underscores instead for the methods.
     
    15981717}
    15991718
    16001719/**
     1720 * Implementation for deflate and gzip transfer encodings.
     1721 *
     1722 * Includes RFC 1950, RFC 1951, and RFC 1952.
     1723 *
     1724 * @since 2.8
     1725 * @package WordPress
     1726 * @subpackage HTTP
     1727 */
     1728class WP_Http_Encoding {
     1729
     1730        /**
     1731         * Compress raw string using the deflate format.
     1732         *
     1733         * Supports the RFC 1951 standard.
     1734         *
     1735         * @since 2.8
     1736         *
     1737         * @param string $raw String to compress.
     1738         * @param int $level Optional, default is 9. Compression level, 9 is highest.
     1739         * @param string $supports Optional, not used. When implemented it will choose the right compression based on what the server supports.
     1740         * @return string|bool False on failure.
     1741         */
     1742        function compress( $raw, $level = 9, $supports = null ) {
     1743                return gzdeflate( $raw, $level );
     1744        }
     1745
     1746        /**
     1747         * Decompression of deflated string.
     1748         *
     1749         * Will attempt to decompress using the RFC 1950 standard, and if that fails
     1750         * then the RFC 1951 standard deflate will be attempted. Finally, the RFC
     1751         * 1952 standard gzip decode will be attempted. If all fail, then the
     1752         * original compressed string will be returned.
     1753         *
     1754         * @since 2.8
     1755         *
     1756         * @param string $compressed String to decompress.
     1757         * @param int $length The optional length of the compressed data.
     1758         * @return string|bool False on failure.
     1759         */
     1760        function decompress( $compressed, $length = null ) {
     1761                $decompressed = gzinflate( $compressed );
     1762
     1763                if( false !== $decompressed )
     1764                        return $decompressed;
     1765
     1766                $decompressed = gzuncompress( $compressed );
     1767
     1768                if( false !== $decompressed )
     1769                        return $decompressed;
     1770
     1771                $decompressed = gzdecode( $compressed );
     1772
     1773                if( false !== $decompressed )
     1774                        return $decompressed;
     1775
     1776                return $compressed;
     1777        }
     1778
     1779        /**
     1780         * What encoding types to accept and their priority values.
     1781         *
     1782         * @since 2.8
     1783         *
     1784         * @return string Types of encoding to accept.
     1785         */
     1786        function accept_encoding() {
     1787                $type = array();
     1788                if( function_exists( 'gzinflate' ) )
     1789                        $type[] = 'deflate;q=1.0';
     1790
     1791                if( function_exists( 'gzuncompress' ) )
     1792                        $type[] = 'compress;q=0.5';
     1793
     1794                if( function_exists( 'gzdecode' ) )
     1795                        $type[] = 'gzip;q=0.5';
     1796
     1797                return implode(', ', $type);
     1798        }
     1799
     1800        /**
     1801         * What enconding the content used when it was compressed to send in the headers.
     1802         *
     1803         * @since 2.8
     1804         *
     1805         * @return string Content-Encoding string to send in the header.
     1806         */
     1807        function content_encoding() {
     1808                return 'deflate';
     1809        }
     1810
     1811        /**
     1812         * Whether the content be decoded based on the headers.
     1813         *
     1814         * @since 2.8
     1815         *
     1816         * @param array|string $headers All of the available headers.
     1817         * @return bool
     1818         */
     1819        function should_decode($headers) {
     1820                if( is_array( $headers ) ) {
     1821                        if( array_key_exists('content-encoding', $headers) && ! empty( $headers['content-encoding'] ) )
     1822                                return true;
     1823                } else if( is_string( $headers ) ) {
     1824                        return ( stripos($headers, 'content-encoding:') !== false );
     1825                }
     1826
     1827                return false;
     1828        }
     1829
     1830        /**
     1831         * Whether decompression and compression are supported by the PHP version.
     1832         *
     1833         * Each function is tested instead of checking for the zlib extension, to
     1834         * ensure that the functions all exist in the PHP version and aren't
     1835         * disabled.
     1836         *
     1837         * @since 2.8
     1838         *
     1839         * @return bool
     1840         */
     1841        function is_available() {
     1842                return ( function_exists('gzuncompress') || function_exists('gzdeflate') ||
     1843                                 function_exists('gzinflate') );
     1844        }
     1845}
     1846
     1847/**
    16011848 * Returns the initialized WP_Http Object
    16021849 *
    16031850 * @since 2.7.0