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Bug #22730 fopen/fsockopen opens local file instead of doing a HTTP request
Submitted: 2003-03-15 11:55 UTC Modified: 2003-03-15 23:08 UTC
From: web at affenkrieger dot de Assigned:
Status: Not a bug Package: Network related
PHP Version: 4.3.1 OS: Windows 2000
Private report: No CVE-ID: None
 [2003-03-15 11:55 UTC] web at affenkrieger dot de
I'm runnin' a local Apache webserver 1.3.27 on my win2000 machine. PHP 4.3.1 is included as a CGI.
When i'm trying to access a non-existing file on my local Apache, PHP tries to access it as a local file and isn't doin a HTTP request as it should do.

  fopen("http://localhost/404.html", "r");

PHP throws this msg into the error_log of Apache:
> PHP Fatal error:  Unknown(): Unable to open
> X:\webroot\404.html in Unknown on line 0
.. but no info to STDOUT

  fopen("", "r");
Just works as expected:
> PHP Warning:  fopen(
> failed to create stream: HTTP request failed! 
> HTTP/1.1 404 Not Found

But it becomes more curious. Doing a HTTP request on my own with fsockopen results in the same error as above!

    $fp = fsockopen ("localhost", 80, $errno, $errstr, 5);
    { die($errstr);}
    $request  = "GET /404.html HTTP/1.0\r\n";
    $request .= "User-Agent: PHP 4.3.1\r\n";
    $request .= "Host: localhost\r\n";
    $request .= "Connection: Close\r\n\r\n";
    $return = '';
    fputs ($fp, $request);
    $line = fgets ($fp, 512);
    $this->header["status"] = $line;
    while (!feof($fp))
        $line = fread ( $fp, 1024 );
        $this->content .= $line;
        $line = fgets ($fp, 128);
        if($line == "\r\n")
        { $header_done=true;}
          $data = explode(":",$line);
          $this->header[$data[0]] = trim($data[1]);
    fclose ($fp);

I am sending a HTTP GET-request to localhost to get the non-existing file, but the answer of the Apache is "200 OK"! And then the same log entry as with fopen():
> PHP Fatal error:  Unknown(): Unable to open
> X:\webroot\404.html in Unknown on line 0

Why does PHP wants to open a local file, even if i'm doing a HTTP request manually ?
The same script works with an other host as expected, too.



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 [2003-03-15 20:38 UTC]
My *guess* is that you have apache configured to handle .html files through PHP.  When you request '404.html' apache passes the request to the PHP engine (a second instance, not the instance which issued the request) which attempts to open the file specified via apache and subsequently doesn't find it.

Consider this.... what happens when you open a normal webbrowser (one your local box) and browse http://localhost/404.html ?

 [2003-03-15 23:08 UTC]
Support questions elsewhere, thank you.

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