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Proxy now callable as an object

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Well, "object"...
This commit is contained in:
Geoffrey Frogeye 2015-04-09 21:49:50 +02:00
parent b287949ead
commit bc30ea6f88
1 changed files with 85 additions and 87 deletions
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172
proxy.php
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@ -1,100 +1,98 @@
<?php
// PROXY
// Config
$serv = 'google.com'; // TODO External file
$port = 80;
$root = '';
$localRoot = '';
// Functions
function str_replace_once($search, $replace, $subject) { // TODO Credit
$pos = strpos($subject, $search);
if ($pos === false) {
return $subject;
}
return substr($subject, 0, $pos) . $replace . substr($subject, $pos + strlen($search));
}
if (!function_exists('getallheaders')) { // TODO Credit
function getallheaders() {
if (!is_array($_SERVER)) {
return array();
}
$headers = array();
foreach ($_SERVER as $name => $value) {
if (substr($name, 0, 5) == 'HTTP_') {
$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
class Proxy {
public function __construct($serv, $port = 80, $root = '/', $localRoot = '') {
// Functions
function str_replace_once($search, $replace, $subject) { // TODO Credit
$pos = strpos($subject, $search);
if ($pos === false) {
return $subject;
}
return substr($subject, 0, $pos) . $replace . substr($subject, $pos + strlen($search));
}
return $headers;
}
}
// Target determination
$metd = $_SERVER['REQUEST_METHOD'];
$reqp = $_SERVER['REQUEST_URI'];
$reqp = str_replace_once($localRoot, '', $reqp); // TODO Reliable method
if (!function_exists('getallheaders')) { // TODO Credit
function getallheaders() {
if (!is_array($_SERVER)) {
return array();
}
// Preparing request headers
$reqHeds = "$metd $root$reqp HTTP/1.1\r\n";
$reqHeds .= "Host: $serv:$port\r\n";
// Converting client request headers to server request headers
$reqsHedsC = getallheaders();
foreach ($reqsHedsC as $name => $content) {
if ($name != 'Host' && $name != 'Connection') { // TODO More analysis
$reqHeds .= "$name: $content\r\n";
}
}
if ($metd == 'POST') { // TODO Other with data methods
if (isset($_POST['payload'])) {
$postData = stripslashes($_POST['payload']);
$reqHeds .= "Content-Length: ".strlen($postData)."\r\n";
$reqHeds .= "Connection: Close\r\n";
$reqHeds .= "\r\n" . $postData;
} else {
$postinfo = '';
foreach ($_POST as $key => $value) {
$postinfo .= $key . '=' . urlencode($value) . '&';
}
$postinfo = rtrim($postinfo, '&');
$reqHeds .= "\r\n" . $postinfo;
}
} else {
$reqHeds .= "Connection: Close\r\n\r\n";
}
$fp = fsockopen($serv, $port, $errno, $errstr, 30);
if (!$fp) { // TODO ErrorCode, ErrorDocument
echo "Couldn't connect to server\n<br/>$errstr ($errno)<br />\n";
} else {
// Sending request
fwrite($fp, $reqHeds);
$resBuf = '';
while ($get = fgets($fp, 128)) {
// Getting response
if ($resBuf === True) { // If headers sent
echo $get;
} else {
$resBuf .= $get;
if ($sepPos = strrpos($resBuf, "\r\n\r\n")) { // Headers have been retrieved
$resHeds = explode("\r\n", substr($resBuf, 0, $sepPos));
foreach ($resHeds as $resHed) { // Setting headers
header($resHed);
if (substr($resHed, 0, 4) == 'HTTP') { // FastCGI fix when using ErrorDocument
header('Status: ' . substr($resHed, 9));
$headers = array();
foreach ($_SERVER as $name => $value) {
if (substr($name, 0, 5) == 'HTTP_') {
$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
}
}
echo substr($resBuf, $sepPos + 4); // Sending the rest (usually empty)
$resBuf = True; // Setting mode to automatically redirect
return $headers;
}
}
// Target determination
$metd = $_SERVER['REQUEST_METHOD'];
$reqp = $_SERVER['REQUEST_URI'];
$reqp = str_replace_once($localRoot, '', $reqp); // TODO Reliable method
// Preparing request headers
$reqHeds = "$metd $root$reqp HTTP/1.1\r\n";
$reqHeds .= "Host: $serv:$port\r\n";
// Converting client request headers to server request headers
$reqsHedsC = getallheaders();
foreach ($reqsHedsC as $name => $content) {
if ($name != 'Host' && $name != 'Connection') { // TODO More analysis
$reqHeds .= "$name: $content\r\n";
}
}
if ($metd == 'POST') { // TODO Other with data methods
if (isset($_POST['payload'])) {
$postData = stripslashes($_POST['payload']);
$reqHeds .= "Content-Length: ".strlen($postData)."\r\n";
$reqHeds .= "Connection: Close\r\n";
$reqHeds .= "\r\n" . $postData;
} else {
$postinfo = '';
foreach ($_POST as $key => $value) {
$postinfo .= $key . '=' . urlencode($value) . '&';
}
$postinfo = rtrim($postinfo, '&');
$reqHeds .= "\r\n" . $postinfo;
}
} else {
$reqHeds .= "Connection: Close\r\n\r\n";
}
$fp = fsockopen($serv, $port, $errno, $errstr, 30);
if (!$fp) { // TODO ErrorCode, ErrorDocument
echo "Couldn't connect to server\n<br/>$errstr ($errno)<br />\n";
} else {
// Sending request
fwrite($fp, $reqHeds);
$resBuf = '';
while ($get = fgets($fp, 128)) {
// Getting response
if ($resBuf === True) { // If headers sent
echo $get;
} else {
$resBuf .= $get;
if ($sepPos = strrpos($resBuf, "\r\n\r\n")) { // Headers have been retrieved
$resHeds = explode("\r\n", substr($resBuf, 0, $sepPos));
foreach ($resHeds as $resHed) { // Setting headers
header($resHed);
if (substr($resHed, 0, 4) == 'HTTP') { // FastCGI fix when using ErrorDocument
header('Status: ' . substr($resHed, 9));
}
}
echo substr($resBuf, $sepPos + 4); // Sending the rest (usually empty)
$resBuf = True; // Setting mode to automatically redirect
}
}
}
fclose($fp);
}
}
fclose($fp);
}
?>