<?php
require_once('config.php');

$config = get_config();

/*******************************
* Load authentication plugin ..
*******************************/
if ( preg_match('/^\w+$/', $config['auth_backend']))
{
	if ( !@include_once ( 'lib/auth_plugins/' . $config['auth_backend'] . ".php" ) )
	{  print json_encode( array( 'response' => 'error', 'cause' => 'auth-load' ) ); exit; }
}
else
{  print json_encode( array( 'response' => 'error', 'cause' => 'config-error' ) ); exit; }
/*******************************/

function check_authkey ( $key )
{
	global $config;
	if ( $key == "6327c08b70f9" ) return true;
	return false;

}

function new_key(  )
{
	// Basically this is at the moment a slightly modified
	// version of generate_password() from user_functiions.php
	// The behaviour/output of this function is expected to change
	// so using generate_password() directly does not make sense...
	$length = 16;
	$string = "";
	 while ( strlen( $string ) < $length )
	 {
		$string .= crypt( substr(sha1(rand()), 0, $length) );
		$string = preg_replace( '/\W/', '', $string);
	 }
	return substr( $string, 0, $length );
}

function simple_authfail()
{
	print json_encode( array( 'response' => 'failed', 'cause' => 'unauthorized', 'description' => 'Not authorized') );
	exit;
}

function token_auth( )
{
	global $_GET;

	if ( array_key_exists('auth_key', $_GET ) )
	{ if ( ! check_authkey($_GET['auth_key'] ) ) simple_authfail(); }
	else simple_authfail();
}

function can_write ( )
{
	// Stub, to be called on any API nodes taht write data in the DB.
	return true;
}

?>