PHP sending HTTP Post request via fsockopen socket

Anon

I am trying to implement a specific (and simple) http proxy through PHP. I've been able to get the code to signon to the remote server and process HTTP GET commands with no problems.

However, I am now stumped on the exact format an HTTP POST is formatted to a HTTP server and can't seem to make my code support this method!. I've gone through as many HTTP RFCs I could find. Been through the code to w3c-libwww with no success. If anyone has any suggestions on where I can find this it would be greatly appreciated.

Thanks in advance,
David

Anon

hi,

I am greatly interested in your project since I am trying to do the same thing on my own =)
Did you manage to handle the output of a http request correctly ? I mean, how does your proxy behave when you recieve, say, a JPEG image ? I've been trying to sort the http headers from the output, send them to the client (or just the Content-Type: one), save the rest to a temp file and perform a fpassthru(temp) or something like that, but it doesn't appear to work (unless my code is really flawed, and that is quite a possibility =).
Please E-mail me or contact me so we can talk about our projects.

Greuh !

Anon

by the way, as far as I know (according to what I found on the net and hacking my netscape =), a POST request should be like that :
<header 1>
COntent-type: application/x-form-urlencoded (not sure)
...
<header n>
<blank line>
arg1=blah&arg2=blah...

if you're uploading a file, it is slighlty changed, and you have to create a MIME formatted message (boundaries etc ...).

as far as I know it works, but I've been to lazy so far to code the upload part =)

Greuh !

bbbear

Dear Greuh and David,

I'm dealing with what you both has gone through at the moment and I wonder if you already have the solution to support post method via HTTP POST using fsockopen ?

Currently I'm doing an experiment using PostToHost function to send a HTTP POST request to a server and invoke a script automatically. I manage to get it done but unfortunately, it doesn't allow access outside of the proxy. Have you both had any problem with accessing file that's not from intranet ?

I wonder if there's any get around about sending HTTP POST via fsockopen and support proxy at the same time as well.

Hope can discuss with you both together.

Best regards.

Anon

It would be interesting if we could
hack the data sent by an browser like netscape during a POST request. I've being trying to find a sort of program (tried netcat) to hack this info and better understand the format.

The information on w3c is too extensive and I've being looking at it without success for a couple of days so far..

Anyone to hack this data?

Anon

I believe this is the solution.

http://px.sklar.com/code.html?code_id=313

mrasnika

here's what i do:
...
function HTTP_MSG ($http_msg, $line)
{
return $http_msg.$line."\r\n";
}

...

$host = 'localhost';
$path = 'test.php';

$USER = '9bala';
$PASSWORD = 'sincreto';

$Message = "Username=$USER&Password=$PASSWORD&login=Login&ssl=";
$ContentLength = strlen ($Message);

$msg = HTTP_MSG ($msg, "POST /$path HTTP/1.1");
$msg = HTTP_MSG ($msg, "HOST: $host");
$msg = HTTP_MSG ($msg, "ACCEPT: /");
$msg = HTTP_MSG ($msg, "Referer: http://$host/$path");
$msg = HTTP_MSG ($msg, "Content-length: $ContentLength");
$msg = HTTP_MSG ($msg, "User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 95)");
$msg = HTTP_MSG ($msg, "Content-Type: application/x-www-form-urlencoded");
$msg = HTTP_MSG ($msg, "Connection: Keep-Alive");
$msg = HTTP_MSG ($msg, "");
$msg = HTTP_MSG ($msg, $Message);
$msg = HTTP_MSG ($msg, "");

$fp = pfsockopen ($host, 80, &$errno, &$errstr, 30);
if (!$fp) {
echo "ERROR_STRING=$errstr ERR_NO($errno)<br>\n";
} else {
fwrite ($fp, $msg);
while (!feof($fp)) echo=fgets ($fp,1024);
fclose ($fp);
}

Anon

$url="your url";
$query = "parameters and value passing to be passed with url";

$request = "POST ".$url." HTTP/1.0\r\n";
$request = $request ."Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, /\r\n";
$request = $request ."Referer: your url \r\n";
$request = $request ."Accept-Language: en-us\r\n";
$request = $request ."Content-Type: application/x-www-form-urlencoded\r\n";
$request = $request ."Accept-Encoding: gzip, deflate\r\n";
$request = $request ."User-Agent: Mozilla/4.61 [ja] (X11; I; Linux 2.2.13-33cmc1 i686)\r\n";
$request = $request ."Host: www.bluedart.com\r\n";
$request = $request ."Content-Length: ". strlen($query)."\r\n";
//proxy authorization........
$request = $request ."Proxy-Authorization: basic cmFqN3VjOnB===\r\n";
$request = $request ."Pragma: no-cache\r\n";
$request = $request ."Connection: keep-alive\r\n\r\n";
$request = $request . $query."\r\n";

$line = "";
$host="your host";
$connection = @fsockopen($host,80,&$errorNumber,&$errorString,60);
if(!$connection)
{
}
if ($connection)
{
fputs($connection,$request);
}
fclose($connection);

fabio

The solution found here is the easiest, I believe:
http://www.faqts.com/knowledge_base/view.phtml/aid/12039
Still, I wonder whether I can send more than one post without closing and reopening the socket. I tried it, but it does not work for me