$syntaxcoloring = $_POST['syntaxcoloring'];
if ($syntaxcoloring != '0' && $syntaxcoloring != '1') {
$error = true;
}
if ($syntaxcoloring != '0') {
$meta['syntaxcoloring'] = true;
}
}
// You can't have an open discussion on a "Burn after reading" paste:
if (isset($meta['burnafterreading'])) {
unset($meta['opendiscussion']);
}
// Optional nickname for comments
if (!empty($_POST['nickname'])) {
$nick = $_POST['nickname'];
if (!validSJCL($nick)) {
$error = true;
} else {
$meta['nickname'] = $nick;
// Generation of the anonymous avatar (Vizhash):
// If a nickname is provided, we generate a Vizhash.
// (We assume that if the user did not enter a nickname, he/she wants
// to be anonymous and we will not generate the vizhash.)
$vz = new vizhash16x16();
$pngdata = $vz->generate($_SERVER['REMOTE_ADDR']);
if ($pngdata != '') {
$meta['vizhash'] = 'data:image/png;base64,' . base64_encode($pngdata);
}
// Once the avatar is generated, we do not keep the IP address, nor its hash.
}
}
mkdir('data', 0705);
file_put_contents('data/.htaccess', "Allow from none\nDeny from all\n", LOCK_EX);
}
// Make sure last paste from the IP address was more than 10 seconds ago.
if (limitReached($_SERVER['REMOTE_ADDR'])) {
echo json_encode(array('status' => 1, 'message' => 'Please wait 10 seconds between each post.'));
exit;
}
// Make sure content is not too big.
$data = $_POST['data'];
if (strlen($data) > 2000000) {
echo json_encode(array('status' => 1, 'message' => 'Paste is too big! File size limit for encrypted data is 2mb.'));
exit;
}
// Make sure format is correct.
if (!validSJCL($data)) {
echo json_encode(array('status' => 1, 'message' => 'Invalid data.'));
exit;
}
// Read additional meta-information.
$meta = array();
if ($error) {
echo json_encode(array('status' => 1, 'message' => 'Invalid data.'));
exit;
}
// We just want a small hash to avoid collisions: Half-MD5 (64 bits) will do the trick.
$dataid = substr(hash('md5', $data), 0, 16);
$storage = array('data' => $data);
$storagedir = dataid2path($dataid);
if (!is_dir($storagedir)) {
mkdir($storagedir, $mode = 0705, $recursive = true);