有没有网页代理源码？ - 全球主机交流论坛

<?PHP
// Change these configuration options if needed, see above descriptions for info.
$enable_jsonp = false;
$enable_native = false;
$valid_url_regex = '/.*/';
// ############################################################################
$url = $_GET['url'];
if ( !$url ) {
// Passed url not specified.
$contents = 'ERROR: url not specified';
$status = array( 'http_code' => 'ERROR' );
} else if ( !preg_match( $valid_url_regex, $url ) ) {
// Passed url doesn't match $valid_url_regex.
$contents = 'ERROR: invalid url';
$status = array( 'http_code' => 'ERROR' );
} else {
$ch = curl_init( $url );
if ( strtolower($_SERVER['REQUEST_METHOD']) == 'post' ) {
curl_setopt( $ch, CURLOPT_POST, true );
curl_setopt( $ch, CURLOPT_POSTFIELDS, $_POST );
}
if ( $_GET['send_cookies'] ) {
$cookie = array();
foreach ( $_COOKIE as $key => $value ) {
$cookie[] = $key . '=' . $value;
}
if ( $_GET['send_session'] ) {
$cookie[] = SID;
}
$cookie = implode( '; ', $cookie );
curl_setopt( $ch, CURLOPT_COOKIE, $cookie );
}
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt( $ch, CURLOPT_HEADER, true );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch, CURLOPT_USERAGENT, $_GET['user_agent'] ? $_GET['user_agent'] : $_SERVER['HTTP_USER_AGENT'] );
list( $header, $contents ) = preg_split( '/([\r\n][\r\n])\\1/', curl_exec( $ch ), 2 );
$status = curl_getinfo( $ch );
curl_close( $ch );
}
// Split header text into an array.
$header_text = preg_split( '/[\r\n]+/', $header );
if ( $_GET['mode'] == 'native' ) {
if ( !$enable_native ) {
$contents = 'ERROR: invalid mode';
$status = array( 'http_code' => 'ERROR' );
}
// Propagate headers to response.
foreach ( $header_text as $header ) {
if ( preg_match( '/^(?:Content-Type|Content-Language|Set-Cookie):/i', $header ) ) {
header( $header );
}
}
print $contents;
} else {
// $data will be serialized into JSON data.
$data = array();
// Propagate all HTTP headers into the JSON data object.
if ( $_GET['full_headers'] ) {
$data['headers'] = array();
foreach ( $header_text as $header ) {
preg_match( '/^(.+?):\s+(.*)$/', $header, $matches );
if ( $matches ) {
$data['headers'][ $matches[1] ] = $matches[2];
}
}
}
// Propagate all cURL request / response info to the JSON data object.
if ( $_GET['full_status'] ) {
$data['status'] = $status;
} else {
$data['status'] = array();
$data['status']['http_code'] = $status['http_code'];
}
// Set the JSON data object contents, decoding it from JSON if possible.
$decoded_json = json_decode( $contents );
$data['contents'] = $decoded_json ? $decoded_json : $contents;
// Generate appropriate content-type header.
$is_xhr = strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest';
header( 'Content-type: application/' . ( $is_xhr ? 'json' : 'x-javascript' ) );
// Get JSONP callback.
$jsonp_callback = $enable_jsonp && isset($_GET['callback']) ? $_GET['callback'] : null;
// change to utf-8
$charset = mb_detect_encoding($data['contents'],array('UTF-8','GBK','GB2312'));
$charset = strtolower($charset);
if('cp936' == $charset){
$charset='GBK';
}
if("utf-8" != $charset){
$data['contents'] = iconv($charset,"UTF-8//IGNORE",$data['contents']);
}
// Generate JSON/JSONP string
$json = json_encode( $data );
print $jsonp_callback ? "$jsonp_callback($json)" : $json;
}
?>

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