librenms-librenms/html/pages/deluser.inc.php

<?php

echo('<div style="margin: 10px;">');

if ($_SESSION['userlevel'] < 10 || $_SESSION['userlevel'] > 10) { include("includes/error-no-perm.inc.php"); } else
{
  echo("<h3>Delete User</h3>");

  $pagetitle[] = "Delete user";

  if (auth_usermanagement())
  {
    if ($vars['action'] == "del")
    {
      $delete_username = dbFetchCell("SELECT username FROM users WHERE user_id = ?", array($vars['id']));

      if ($vars['confirm'] == "yes")
      {
        if (deluser($delete_username))
        {
          print_message('<div class="infobox">User "' . $delete_username . '" deleted!');
        }
        else
        {
          print_error('Error deleting user "' . $delete_username . '"!');
        }
      }
      else
      {
        print_error('You have requested deletion of the user "' . $delete_username . '". This action can not be reversed.<br /><a class="btn btn-danger" href="deluser/action=del/id=' . $vars['id'] . '/confirm=yes">Click to confirm</a>');
      }
    }

    // FIXME v mysql query should be replaced by authmodule
    $userlist = dbFetchRows("SELECT * FROM `users`");

echo('
<form role="form" class="form-horizontal" method="GET" action="">
  <input type="hidden" name="action" value="del">
  <div class="form-group">
    <label for="user_id" class="col-sm-2 control-label">Select User: </label>
    <div class="col-sm-6">
      <select id="user_id" name="id" class="form-control input-sm">
');

    foreach ($userlist as $userentry)
    {
      $i++;
      echo('<option value="'.$userentry['user_id'].'">'.$userentry['username'].'</option>');
    }

echo('
      </select>
    </div>
  </div>
  <div class="form-group">
    <div class="col-sm-2">
    </div>
    <div class="col-sm-6">
      <button class="btn btn-danger btn-sm">Delete User</button>
    </div>
  </div>
</form>
');
  }
  else
  {
    print_error("Authentication module does not allow user management!");
  }
}

echo("</div>");

?>