Can I retreive files from another server with fsockopen?

[GoodWill]

I have this code, to receive image from another server and save it to disk. But the file is shorter than the original and contains header like this:

HTTP/1.1 200 OK
Date: Sat, 21 Sep 2002 14:39:43 GMT
Server: Apache/1.3.26 (Unix) PHP/4.2.3
Last-Modified: Fri, 20 Sep 2002 19:44:44 GMT
ETag: "13785a-ace8-3d8b7aac"
Accept-Ranges: bytes
Content-Length: 44264
Connection: close
Content-Type: image/jpeg

<?php

$pic="/004.jpg"; 
$str="GET ".$pic." HTTP/1.1 
Connection: Keep-Alive
Host: www.google.com
Referer: http://www.domain.com/index.html\n\n
"; 

$fp = fsockopen ("www.domain.com", 80); 
fputs ($fp, $str); 
while (!feof($fp)) 
{ 
$data.=fgets ($fp,9999); 
} 
fclose ($fp); 
$fr= fopen ("image.jpg","w+"); 
fputs ($fr,$data); 

?>

Is it possible to get the file like this? I use fsockopen, because I need to send referer by request

[hand]

Did you see all the samples on http://www.php.net/manual/en/function.fsockopen.php ?

[GoodWill]

I read it, but it dont bring light to my problem. Does anybody know, how to solve it?

[Weedpacket]

Well, the obvious place to start would be to take this http response (which is what you're getting, not just a file), strip off the header (everything up to and including the first blank line) and just keep the body.

$data=substr(strstr($data,"\n\n"),2);

Or maybe that's "\r\n\r\n" and ,4

I'd also be wary of the note in the documentation about magic_quotes_runtime - see the entry for fputs(), and follow things from there.

[diego25]

Also, don't use fgets - use fread instead because it's binary-safe.

Diego

[GoodWill]

I have made changes to the script and works very good with html files but when I try to download binary file, get only first letters like "ÿØÿà" from jpeg images or "MZ" from executable files. Dont know why, but it looks, that stopes to read when it got "" in file.

I use follows script:

<?php

$pic="/top2.jpg"; 
$str="GET ".$pic." HTTP/1.1
Connection: Keep-Alive
Host: localhost 
Referer: http://localhost/index.html\n\n
"; 

$fp = fsockopen ("localhost", 80); 
fputs ($fp, $str); 
while (!feof($fp)) 
{ 
$data=fread ($fp,99999);
} 
$data2=substr(strstr($data,"\r\n\r\n"),4);  

fclose ($fp); 
$fr= fopen ("out.txt","w+"); 
fputs ($fr,$data2); 

?>

[GoodWill]

some suggestion?

[GoodWill]

Hey guys, dont tell me, that nobody knows 😉

[bobthedog]

We do know - we are just leaving you guessing 🙂

Anyhow - to hopefully bring some light to your problem....

Try taking a look at a couple of posts back.... they referred you to http://www.php.net/manual/en/function.fsockopen.php

I would REALLY recommend reading this site again and again and again.... it is one of the most useful PHP sites out there..... anyhow - on with the solution...

I would say after reading the article STOP USING HTTP/1.1.
Try HTTP/1.0 - since your response is obviously being encoded at some point. Well that's my guess anyhow.

Without you posting more of your actual response to this board (i.e the complete set of headers you are getting back in each case).

OooOOoo - just noticed another thing at th ebottom of your code.... the stream you are getting is BINARY (hence the suggestion to change to fread as you have done). But when you come to write it back out, you are reverting to fputs, which is NOT binary safe. Try changing this to fwrite (again - reading php.net would help you with this loads since there are plenty of user comments on it).

And one final point - CLOSE YOUR FILE HANDLES! your last line should be "fclose($fr);".

Anyhow - hope this helps.

[GoodWill]

Thanks, I made changes in script, changed http version to 1.0, use fwrite command, closed the file after write....
I think, that the main problem is in this functions $data2=substr(strstr($data,"\r\n\r\n"),4); because all script as is and was works good with html/txt files, when I dont use this crop function works with binary files too, but I need to remove the header sent by file request to get the original file. This strstr() or substr() function looks, that not works with binary files. I looked in php maual about something. Hmmm, cant find similar function, that can work with bin files, how to crop the header and get original file without use this string functions?

[bobthedog]

Ok - well, it looks like your problem lies on the fact that the binary properties of the stream have been lost as soon as you try to do something with them.

How about being a bit cleverer before you even attempt to read the entire stream?

instead of just blindly reading the entire stream into a string, and then deciding what to do with it... how about....

$blnHeader = true;
while (!feof($fp))
{
    if ($blnHeader)
    {
        // Header information
        read a line using fgets until you read a blank line
        if ($strResponse == '\n\r')
        {
            $blnHeader = false;
        }
    }
    else
    {
        // Binary data
        read into a file using fread
    }
}

But - hang on - I knwo what your shouting - a question I have just thought of...... WHY ARE YOU DOING THIS? What about using plain old fopen() (http://www.php.net/manual/en/function.fopen.php)????

This PHP func is built for this purpose. No worrying about HTTP headers etc, just read from the stream and dump it straight into a file. Simple, quick and a hell of a lot easier.

[Weedpacket]

Originally posted by bobthedog

But - hang on - I knwo what your shouting - a question I have just thought of...... WHY ARE YOU DOING THIS? What about using plain old fopen() (http://www.php.net/manual/en/function.fopen.php)????

Apparently the server is supposed to get an http-referer string.

Then again, there's still cURL...