function processPasteDelete($pasteid, $deletetoken)
{
if (preg_match('/\\A[a-f\\d]{16}\\z/', $pasteid)) {
$filename = dataid2path($pasteid) . $pasteid;
if (!is_file($filename)) {
return array('', 'Paste does not exist, has expired or has been deleted.', '');
}
}
if ($deletetoken != hash_hmac('sha1', $pasteid, getServerSalt())) {
return array('', 'Wrong deletion token. Paste was not deleted.', '');
}
// Paste exists and deletion token is valid: Delete the paste.
deletePaste($pasteid);
return array('', '', 'Paste was properly deleted.');
}
$meta = array();
if ($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, $recursive = true);
}
if (is_file($storagedir . $dataid)) {
// Oups... improbable collision.
echo json_encode(array('status' => 1, 'message' => 'Infite improbability drive activated! Try again, please.'));
exit;
}
// New paste
file_put_contents($storagedir . $dataid, json_encode($storage), LOCK_EX);
// Generate the "delete" token.
// The token is the hmac of the pasteid signed with the server salt.
// The paste can be delete by calling http://myserver.com/zerobin/?pasteid=<pasteid>&deletetoken=<deletetoken>
$deletetoken = hash_hmac('sha1', $dataid, getServerSalt());
echo json_encode(array('status' => 0, 'id' => $dataid, 'deletetoken' => $deletetoken));
// 0 = no error
exit;
echo json_encode(array('status' => 1, 'message' => 'Server error.'));
exit;
} else {
echo json_encode(array('status' => 1, 'message' => 'No data.'));
}
function __construct()
{
$this->width = 16;
$this->height = 16;
$this->salt = getServerSalt();
}
function processPasteDelete($pasteid, $deletetoken)
{
if (preg_match('/\\A[a-f\\d]{16}\\z/', $pasteid)) {
$filename = dataid2path($pasteid) . $pasteid;
if (!is_file($filename)) {
return array('', 'Paste existiert nicht, ist ausgelaufen oder wurde gelöscht.', '');
}
} else {
return array('', 'Invalide Daten', '');
}
if ($deletetoken != hash_hmac('sha1', $pasteid, getServerSalt())) {
return array('', 'Falscher Lösch-Token. Paste wurde nicht gelöscht.', '');
}
// Paste exists and deletion token is valid: Delete the paste.
deletePaste($pasteid);
return array('', '', 'Paste wurde erfolgreich gelöscht!');
}
