copied files

html/login.php

@@ -0,0 +1,18 @@
+<?php
+require_once("usertable.php");
+try {
+  $user = $db->real_escape_string($_REQUEST['user']);
+  $pubkey = $db->real_escape_string($_REQUEST['pubkey']);
+  $q = $db->query("select * from user where name='$user' and pubkey='$pubkey';");
+  if ($q->num_rows==1) {
+    echo json_encode(true);
+  } elseif ($q->num_rows==0) {
+    $q = $db->query("insert into user (name, pubkey) values ('$user', '$pubkey');");
+    echo json_encode(true);
+  } else {
+    echo json_encode(false);
+  }
+} catch (Exception $e) {
+  echo json_encode(false);
+}
+?>