/**
* Uses curl or fsock to make a request to a remote server. Returns the
* response.
*
* @param string $Url The full url to the page being requested (including http://)
* @param integer $Timeout How long to allow for this request. Default Garden.SocketTimeout or 1, 0 to never timeout
* @param boolean $FollowRedirects Whether or not to follow 301 and 302 redirects. Defaults false.
* @return string Response (no headers)
*/
function ProxyRequest($Url, $Timeout = FALSE, $FollowRedirects = FALSE)
{
$OriginalTimeout = $Timeout;
if ($Timeout === FALSE) {
$Timeout = C('Garden.SocketTimeout', 1.0);
}
$UrlParts = parse_url($Url);
$Scheme = GetValue('scheme', $UrlParts, 'http');
$Host = GetValue('host', $UrlParts, '');
$Port = GetValue('port', $UrlParts, $Scheme == 'https' ? '443' : '80');
$Path = GetValue('path', $UrlParts, '');
$Query = GetValue('query', $UrlParts, '');
// Get the cookie.
$Cookie = '';
$EncodeCookies = C('Garden.Cookie.Urlencode', TRUE);
foreach ($_COOKIE as $Key => $Value) {
if (strncasecmp($Key, 'XDEBUG', 6) == 0) {
continue;
}
if (strlen($Cookie) > 0) {
$Cookie .= '; ';
}
$EValue = $EncodeCookies ? urlencode($Value) : $Value;
$Cookie .= "{$Key}={$EValue}";
}
$Response = '';
if (function_exists('curl_init')) {
//$Url = $Scheme.'://'.$Host.$Path;
$Handler = curl_init();
curl_setopt($Handler, CURLOPT_URL, $Url);
curl_setopt($Handler, CURLOPT_PORT, $Port);
curl_setopt($Handler, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($Handler, CURLOPT_HEADER, 1);
curl_setopt($Handler, CURLOPT_USERAGENT, ArrayValue('HTTP_USER_AGENT', $_SERVER, 'Vanilla/2.0'));
curl_setopt($Handler, CURLOPT_RETURNTRANSFER, 1);
if ($Cookie != '') {
curl_setopt($Handler, CURLOPT_COOKIE, $Cookie);
}
if ($Timeout > 0) {
curl_setopt($Handler, CURLOPT_TIMEOUT, $Timeout);
}
// TIM @ 2010-06-28: Commented this out because it was forcing all requests with parameters to be POST. Same for the $Url above
//
//if ($Query != '') {
// curl_setopt($Handler, CURLOPT_POST, 1);
// curl_setopt($Handler, CURLOPT_POSTFIELDS, $Query);
//}
$Response = curl_exec($Handler);
$Success = TRUE;
if ($Response == FALSE) {
$Success = FALSE;
$Response = '';
throw new Exception(curl_error($Handler));
}
curl_close($Handler);
} else {
if (function_exists('fsockopen')) {
$Referer = Gdn_Url::WebRoot(TRUE);
// Make the request
$Pointer = @fsockopen($Host, $Port, $ErrorNumber, $Error, $Timeout);
if (!$Pointer) {
throw new Exception(sprintf(T('Encountered an error while making a request to the remote server (%1$s): [%2$s] %3$s'), $Url, $ErrorNumber, $Error));
}
stream_set_timeout($Pointer, $Timeout);
if (strlen($Cookie) > 0) {
$Cookie = "Cookie: {$Cookie}\r\n";
}
$HostHeader = $Host . ($Port != 80 ? ":{$Port}" : '');
$Header = "GET {$Path}?{$Query} HTTP/1.1\r\n" . "Host: {$HostHeader}\r\n" . "User-Agent: " . ArrayValue('HTTP_USER_AGENT', $_SERVER, 'Vanilla/2.0') . "\r\n" . "Accept: */*\r\n" . "Accept-Charset: utf-8;\r\n" . "Referer: {$Referer}\r\n" . "Connection: close\r\n";
if ($Cookie != '') {
$Header .= $Cookie;
}
$Header .= "\r\n";
// Send the headers and get the response
fputs($Pointer, $Header);
while ($Line = fread($Pointer, 4096)) {
$Response .= $Line;
}
@fclose($Pointer);
$Bytes = strlen($Response);
$Response = trim($Response);
$Success = TRUE;
$StreamInfo = stream_get_meta_data($Pointer);
if (GetValue('timed_out', $StreamInfo, FALSE) === TRUE) {
$Success = FALSE;
$Response = "Operation timed out after {$Timeout} seconds with {$Bytes} bytes received.";
}
} else {
throw new Exception(T('Encountered an error while making a request to the remote server: Your PHP configuration does not allow curl or fsock requests.'));
}
}
if (!$Success) {
return $Response;
}
$ResponseHeaderData = trim(substr($Response, 0, strpos($Response, "\r\n\r\n")));
$Response = trim(substr($Response, strpos($Response, "\r\n\r\n") + 4));
$ResponseHeaderLines = explode("\n", trim($ResponseHeaderData));
$Status = array_shift($ResponseHeaderLines);
$ResponseHeaders = array();
$ResponseHeaders['HTTP'] = trim($Status);
/* get the numeric status code.
* - trim off excess edge whitespace,
* - split on spaces,
* - get the 2nd element (as a single element array),
* - pop the first (only) element off it...
* - return that.
*/
$ResponseHeaders['StatusCode'] = array_pop(array_slice(explode(' ', trim($Status)), 1, 1));
foreach ($ResponseHeaderLines as $Line) {
$Line = explode(':', trim($Line));
$Key = trim(array_shift($Line));
$Value = trim(implode(':', $Line));
$ResponseHeaders[$Key] = $Value;
}
if ($FollowRedirects) {
$Code = GetValue('StatusCode', $ResponseHeaders, 200);
if (in_array($Code, array(301, 302))) {
if (array_key_exists('Location', $ResponseHeaders)) {
$Location = AbsoluteSource(GetValue('Location', $ResponseHeaders), $Url);
return ProxyRequest($Location, $OriginalTimeout, $FollowRedirects);
}
}
}
return $Response;
}
protected static function StaticDomDocumentReplace(&$String)
{
if (substr(ltrim($String), 0, 5) != '<?xml') {
$String = '<?xml version="1.0" encoding="UTF-8"?' . ">\n" . $String;
}
$DOMDocument = DOMDocument::LoadXML($String, LIBXML_NOERROR);
if ($DOMDocument === False) {
return $String;
}
$ImageDimensions = self::ImageDimensions();
$BeforeCount = count($ImageDimensions);
$Domain = Gdn::Request()->Domain();
$DomNodeList = $DOMDocument->GetElementsByTagName('img');
for ($i = $DomNodeList->length - 1; $i >= 0; $i--) {
$Node = $DomNodeList->Item($i);
$Width = $Node->GetAttribute('width');
$Height = $Node->GetAttribute('height');
if ($Width == '' && $Height == '') {
$Src = $Node->GetAttribute('src');
if (!$Src) {
continue;
}
$Src = AbsoluteSource($Src, $Domain);
$CrcKey = crc32($Src);
if (!array_key_exists($CrcKey, $ImageDimensions)) {
$ImageSize = getimagesize($Src);
$ImageDimensions[$CrcKey] = array($ImageSize[0], $ImageSize[1], '_src' => $Src);
} else {
$ImageSize = $ImageDimensions[$CrcKey];
}
if ($ImageSize[0] && $ImageSize[1]) {
$Node->SetAttribute('width', $ImageSize[0]);
$Node->SetAttribute('height', $ImageSize[1]);
}
}
}
// Save cache.
if (count($ImageDimensions) != $BeforeCount) {
self::ImageDimensions($ImageDimensions);
}
$String = $DOMDocument->saveXML();
// LIBXML_NOXMLDECL | LIBXML_NOENT
//$DOMDocument->formatOutput = True;
//$String = $DOMDocument->saveXML(Null, LIBXML_NOXMLDECL | LIBXML_NOENT);
//d($String);
}
