<?php

$mylogfile='/var/www/cgi-bin/debug.log';
$mydatafile='/var/www/cgi-bin/mydata.log';

function generateString($length = 8) {
    $possible = "123456789abcdef";
    $maxlength = strlen($possible);
    if ($length > $maxlength) {
	$length = $maxlength;
    }
    $i = 0;
    while ($i < $length) {
	$char = substr($possible, mt_rand(0, $maxlength-1), 1);
	if (!strstr($password, $char)) {
	    $password .= $char;
    	    $i++;
	}
    }
    return $password;
}

function GetPostValues() {
    if (!empty($_POST)) {
        $kv = array();
        foreach ($_POST as $key => $value) {
	    $kv[] = "$key=$value";
        }
        $q = join("&", $kv);
    }
    else {
	$q = 0;
    }
    return $q;
}

$file = fopen($mylogfile, "a");
$mydate = date("YmdHis");
$myfunc = $_GET['s'];
$q = GetPostValues();
fputs($file, "$mydate $myfunc IN $q\r\n");

if ($myfunc == 'once') {
    $output = '{"status":0,"body":{"once":"'. generateString(8).'-'.generateString(8) .'"}}';
}

if ($myfunc == 'session')
{
    if ($_POST['action']=='new') {
        $output = '{"status":0,"body":{"sessionid":"'. generateString(4) . '-' . generateString(8) . '-' . generateString(8) .'","sp":{"users":[{"id":5555751,"benutzer":"nick","wt":100.7,"ht":1.88,
"agt":25.1,"sx":1,"fm":3,"cr":1302150411,"att":0}]},"ind":{"lg":"en_EN","imt":1,"stp":1,"f":0,"g":89522},"syp":{"utc":' . time() . '},"ctp":{"goff":7200,"dst":1317872200,"ngoff":3600}}}';
    }
    if ($_POST['action']=='delete') {
        $output = '{"status":0}';
    }
}

if ($myfunc == 'maint') {
    $output = '{"status":0}';
}

if ($myfunc == 'measure') {
    $output = '{"status":0}';
    if (!empty($_POST['macaddress'])) {
	$str = str_replace('[','',(str_replace(']','',$_POST['measures'])));
	$obj = json_decode($str);
	$myweight = $obj->measures->value;
	$myweightdot = substr($myweight,0,3).'.'.substr($myweight,3,3);

        $myuserid = $_POST['userid'];
        $mytime = $_POST['meastime'];

        $file2 = fopen($mydatafile, "a");
        fputs($file2, "$mydate $mytime $myweightdot\r\n");
        fclose($file2);
    }
}

echo $output;
fputs($file, "$mydate $myfunc OUT $output\r\n");
fclose($file);

?>