<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css">
</head>
<body onload="window.location.href = 'https://furp.colean.cc';">
<?php
// write new post to file only if necessary
if (!is_null($_POST["image-bits"]) && strlen($_POST["image-bits"]) != 0) {
$myfile = fopen("posts.txt", "r") or die("Unable to read file!");
$content = fread($myfile, filesize("posts.txt"));
fclose($myfile);
// concatenate new post to the beginning of the string
$signature = "anonymous";
if (!is_null($_POST["signature"]) && strlen($_POST["signature"]) != 0) {
$signature = htmlspecialchars($_POST["signature"]);
}
$content = $signature . "<br>UTC " . date("Y/m/d H:i") . "<br>" . htmlspecialchars($_POST["image-bits"]) . "<br>" . $content;
// write string back into the file
$myfile = fopen("posts.txt", "w") or die("Unable to write file!");
fwrite($myfile, $content);
} else {
echo '<script>alert("Please draw something.")</script>';
?>
</body>
</html>
