<?php

define('GIS_ROOT', '..');
include_once GIS_ROOT . '/inc/common.php';
gis_session_start();
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
// Date in the past
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
// always modified
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
// HTTP/1.1
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
function color_rgb($color, $a)
{
    $tab_color = explode(",", $color);
    if ($a) {
        $col_r = (1 - $a) * 255 + $a * $tab_color[0];
        $col_g = (1 - $a) * 255 + $a * $tab_color[1];
        $col_b = (1 - $a) * 255 + $a * $tab_color[2];
    } else {
        $col_r = $tab_color[0];
        $col_g = $tab_color[1];
        $col_b = $tab_color[2];
    }
    if ($tab_color[0] == 0 && $tab_color[1] == 0 && $tab_color[2] == 0 & $a == 0) {
        $col_r = 0;
        $col_g = 0;
        $col_b = 0;
    }
    $text = round($col_r) . ',' . round($col_g) . ',' . round($col_b);

function gis_init()
{
    if (!gis_session_start()) {
        save_previous();
        if ($_GET['authcode'] == '2') {
            header("Location: /auth.php?authcode=" . $_GET['authcode']);
        } else {
            header("Location: /auth.php");
        }
    }
}