safechat/html/send.php

<?php
try {
  require_once("usertable.php");
  $user = $db->real_escape_string($_REQUEST['user']);
  $msg = $db->real_escape_string($_REQUEST['msg']);
  $pgp = gnupg_init();
  if (strlen($_REQUEST['msg'])>100000) error("message is too long");
  if (!$pgp) error("pgp on server failed");
  $q = $db->query("select pubkey from user where name='$user';");
  if (!$q || $q->num_rows!=1) error("user not found on server");
  $pubkey = gnupg_import($pgp, $q->fetch_row()[0]);
  if (!$pubkey) error("wrong identity");
  require_once("messagetable.php");
  $q = $db->query("insert into message (user, msg) values ('$user', '$msg');");
  if (!$q) {
    error_log("Error storing message: ".$db->error);
    error("storing message failed");
  }
  success("message stored");
} catch (Exception $e) {
  error_log("Error storing message: ".$e->message);
  error("storing message failed");
}

?>