1 <?php

2

3 // Expecting a md5 hash

4 if (empty($_POST["M"]) || !ctype_alnum($_POST["M"]) || (strlen($_POST["M"]) != 32)) {

5 include("chart.html");

6 die();

7 }

8

9 // Assuming version numbers won't be longer than four characters

10 if (empty($_POST["V"]) || (strlen($_POST["V"])) > 4) {

11 include("chart.html");

12 die();

13 }

14

15 date_default_timezone_set('Europe/London');

16 $dir = getcwd();

17 if (is_writable($dir)) {

18 $dir = $dir . '/' . date("Y-m");

19 } else {

20 die("No write permission.\n Fix with: chown -R www-data $dir");

21 }

22 @mkdir($dir, 0777);

23

24 $handle = fopen($dir . '/' . $_POST["M"], "a");

25 fwrite($handle, $_POST["V"] . "\n");

26 fclose($handle);

27 ?>