My script worked, now doesn't?

[Oni]

Hello--

I had written a script some time ago that would act like an apache server on a port of choice. In other words, I would be able to download files with a link like domain.com:60006/file.zip

However, now even though the code seems to be running like it should I can't seem to connect to my webhost when I write a link like that...

I was gonna add some more code so that I could also get a directory listing, then I was going to run it on my shell account so I could see the a script's log more easily.

Even though I added some more code so that i could get a dir listing I now see that the original code doesn't seem to work. Maybe I'm trying to run a different verison of it but it's the only one I now have...

<?

$host = "1.1.1.1";
$port = 60006;

set_time_limit(0);


$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create
socket\n");
// bind socket to port
$result = socket_bind($socket, $host, $port) or die("Could not bind to
socket\n");


while(true){
//listen for connection
$result = socket_listen($socket, 1024) or die("Could not set up socket
listener\n");
// accept connections
$spawn = socket_accept($socket) or die("Could not accept incoming
connection\n");
// read input
$input = socket_read($spawn, 1024) or die("Could not read input\n");

$input = trim($input);
preg_match('/GET (.*) HTTP/',  $input, $get);


$fname = str_replace("/", "", $get[1]);

$fpath = $fname;
$fsize = filesize($fpath);
$bufsize = 20000;

socket_write($spawn,"HTTP Status Code: HTTP/1.1 200 OK\r\nContent-Length: $fsize\r\nContent-Type: application/force-download\r\nContent-Disposition: attachment; filename=$fname\r\nContent-Transfer-Encoding: binary\r\n\r\n");


   if(file_exists($fpath) && $fh = fopen($fpath, "rb")){
       while($buf = fread($fh, $bufsize))
           socket_write($spawn, $buf);
       fclose($fh);
   }
   else
   {
       socket_write($spawn, "HTTP/1.1 404 Not Found\r\n\r\n");
   }

socket_close($spawn);

}
//socket_close($socket);
?>	

Any ideas why it doesn't seem to work? Maybe a problem with my headers? 🙁

Thanks!

[halojoy]

doesn't seem to work?

so what errors do you get?

I suppose you have your script in debug mode ( error_reporting MAXIMAL )

[Oni]

No... Never heard of anything like that?

I put a
error_reporting(MAXIMAL);

over the set time limit but no change...

[Houdini]

First of all dont use short tags like <? use <?phpthen look here

Table 1. error_reporting() level constants and bit values

value constant
1 E_ERROR

2 E_WARNING

4 E_PARSE

8 E_NOTICE

16 E_CORE_ERROR

32 E_CORE_WARNING

64 E_COMPILE_ERROR

128 E_COMPILE_WARNING

256 E_USER_ERROR

512 E_USER_WARNING

1024 E_USER_NOTICE

2047 E_ALL

2048 E_STRICT

4096 E_RECOVERABLE_ERROR

Use error_reporting(2047)

[bradgrafelman]

Also ensure that display_errors is set to On. This is normally what I place at the top of PHP scripts to ensure I get as much error information as possible:

<?PHP
ini_set('display_errors', 'On');
ini_set('error_reporting', E_ALL);

[Oni]

Well, I put all of the error detecting things as told to do so, however there is still no error.

So I thought that maybe my webhost had changed some php variables, so I thought I'd try to run the script on my shell account. And surely enough when I ran it on my shell account it works just like it needs to.

Seeing that I was going to use it on my shell anyway, there isn't a problem 🙂

Thanks!!

[Houdini]

Are you using <? instead of <?php as suggested? If so then they have turned off short tags, what do you get, anything at all or do you see the PHP script?

[Oni]

My webhost supports both tags, I usually use <?php but I dunno maybe because I coded that piece of code some time ago I had used <?

I just see the script loading. The script doesn't print anything, just send data through port specidifed.

I have also edited the code so that if a file is requested, it would print the file, if a directory listing it requested it would print the dir list...

However, now it doesn't seem to work. The code runs w/o any errors however I saw a CPU usage of %64 when I checked, and it seemed as though when requesting a file I would either get 'transferring data' in firefox or nothing...

<?
ini_set('display_errors', 'On');
ini_set('error_reporting', E_ALL);

$host = "1.1.1.1";
$port = 60000;

set_time_limit(0);


$socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create
socket\n");
// bind socket to port
$result = socket_bind($socket, $host, $port) or die("Could not bind to
socket\n");


while(true){
//listen for connection
$result = socket_listen($socket, 1024) or die("Could not set up socket
listener\n");
// accept connections
$spawn = socket_accept($socket) or die("Could not accept incoming
connection\n");
// read input
$input = socket_read($spawn, 1024) or die("Could not read input\n");

$input = trim($input);
preg_match('/GET (.*) HTTP/',  $input, $get);


$got = $get[1];

if (strpos($got, '.') == true) {



$fname = str_replace("/", "", $get[1]);

$fpath = $fname;
$fsize = filesize($fpath);
$bufsize = 20000;

socket_write($spawn,"HTTP Status Code: HTTP/1.1 200 OK\r\n\r\n");


if(file_exists($fpath)) {
	   $buf = readfile($fpath);
	   socket_write($spawn, $buf);
 }
   else
   {
       socket_write($spawn, "HTTP/1.1 404 Not Found\r\n\r\n");
   }

socket_close($spawn);

}
else {






$dir = "/home/alperc" . $get[1];
if (is_dir($dir)) {
   if ($dh = opendir($dir)) {
       while (($file = readdir($dh)) !== false) {
	   $type = filetype($dir . $file);
	   $dir = $dir + "File = $file Type = $type <BR>";


   }
   closedir($dh);
   }
}
socket_write($spawn,"HTTP Status Code: HTTP/1.1 200 OK\r\n\r\n $dir");


}

}
//socket_close($socket);
?>

Yeh see any obvious bugs that maybe I missed? 🙁
Thanks...

[bradgrafelman]

Is it maybe hanging at some point? Try adding echo's after every couple of commands... "Checkpoint 1" ... "Checkpoint 2" etc. Are all of your debug echo's shown?

[Oni]

I found that I had forgotten to close a socket after I opened it...hence the huge cpu load. Now the script runs very smoothly and replies to my http requests. However, when it does I either get a ' 0' when I request dir listing or a '167' when I request to see a file.

I thought maybe the problem was with my variables but when I tested out different ways of writing the var fields I found that it didn't make a difference....

What else can the problem be? 🙁

[thorpe]

Are you sure your host is going to even allow you to run a daemon on port 60000? If this is a web host, you really should consult them first.

Also... how are you trying to run this thing? Executing it via a browser (and therefore via a server) is a bad idea. This IS a server itself, and as such should not be running under apache or any other web server.

I would think they would have just about all ports closed accepting ports 80 and 443.

[Oni]

Nah I'm running it on my shell account.
I'm running it as a bg process.
And the ports accept connections. There is no problem with the daemon portion of the code. However, the problem occurs when I try to output the contents of a file or a dir listing..

Also seeing that I will only use this to look at other bg process's logs I doubt it would much any strain on the server. The largest file I would assume I'd look at would be as small as a text file.

[thorpe]

The fact that it runs an infinant loop would be enough for most hosts to shut you down for using eccess server cpu I would imagine.

[Oni]

Ehh... It uses '0.0' cpu according to my 'ps ux' command