Getting HTTP Authorization to work with PHP CGI mode

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Getting HTTP Authorization to work with PHP CGI mode

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Getting HTTP Authorization to work with PHP CGI mode

TECK

Join Date: Nov 2001

Posts: 4,182

Canada

TECK

10-07-2006, 10:00 PM

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As you all know, using PHP-CGI is more secure then the ole Apache module flavour.
However, with PHP-CGI you cannot use anymore real user authentification, based on a .htaccess/.htpasswd file.

The fix is really easy (and secure), all you need is to have Apache mod_rewrite enabled.

Create a .htaccess file, with the content:

Code:

RewriteEngine On

... your RewriteCond/RewriteRules here ...

RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization},L]

Make sure the line above is the last one in your .htaccess file, if you already have one in place.
Then, in your PHP file, use:

PHP Code:


			
<?php



$auth = base64_decode(substr($_SERVER['REMOTE_USER'], 6));

if (strlen($auth) > 0 OR strcasecmp($auth, ':') > 0)

{

    list($name, $password) = explode(':', $auth);

    $_SERVER['PHP_AUTH_USER'] = $name;

    $_SERVER['PHP_AUTH_PW'] = $password;



    $user_authorized = true;

}

else

{

    header('WWW-Authenticate: Basic realm="My Realm"');

    header('HTTP/1.0 401 Unauthorized');

    echo 'Go away!';

}



if ($user_authorized)

{

    // do your thing here ...

}



?>

I needed this for the apc.php file, running on my server PHP 5.1.6 with FastCGI mode enabled.
For those who want to fix the apc.php file, find:

PHP Code:


			
// authentication needed?

//

if (!USE_AUTHENTICATION) {

    $AUTHENTICATED=1;

} else {

    $AUTHENTICATED=0;

    if (ADMIN_PASSWORD!='password' && ($MYREQUEST['LO'] == 1 || isset($_SERVER['PHP_AUTH_USER']))) {

Replace with:

PHP Code:


			
// authentication needed?

//

if (!USE_AUTHENTICATION)

{

    $AUTHENTICATED = 1;

}

else

{

    $auth = base64_decode(substr($_SERVER['REMOTE_USER'], 6));

    if (strlen($auth) > 0 OR strcasecmp($auth, ':') > 0)

    {

        list($name, $password) = explode(':', $auth);

        $_SERVER['PHP_AUTH_USER'] = $name;

        $_SERVER['PHP_AUTH_PW'] = $password;

    }



    $AUTHENTICATED = 0;

    if (ADMIN_PASSWORD!='password' && ($MYREQUEST['LO'] == 1 || isset($_SERVER['PHP_AUTH_USER']))) {

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