librenms-librenms/html/pages/device/edit/snmp.inc.php

<?php

if ($_POST['editing'])
{
  if ($_SESSION['userlevel'] > "7")
  {
    $community = mres($_POST['community']);
    $snmpver = mres($_POST['snmpver']);
    $transport = $_POST['transport'] ? mres($_POST['transport']) : $transport = "udp";
    $port = $_POST['port'] ? mres($_POST['port']) : $config['snmp']['port'];
    $timeout = mres($_POST['timeout']);
    $retries = mres($_POST['retries']);
    $v3 = array (
      'authlevel' => mres($_POST['authlevel']),
      'authname' => mres($_POST['authname']),
      'authpass' => mres($_POST['authpass']),
      'authalgo' => mres($_POST['authalgo']),
      'cryptopass' => mres($_POST['cryptopass']),
      'cryptoalgo' => mres($_POST['cryptoalgo'])
    );

    #FIXME needs better feedback
    $update = array(
      'community' => $community,
      'snmpver' => $snmpver,
      'port' => $port,
      'transport' => $transport
    );

    if ($_POST['timeout']) { $update['timeout'] = $timeout; }
      else { $update['timeout'] = array('NULL'); }
    if ($_POST['retries']) { $update['retries'] = $retries; }
      else { $update['retries'] = array('NULL'); }

    $update = array_merge($update, $v3);

    $device_tmp = deviceArray($device['hostname'], $community, $snmpver, $port, $transport, $v3);
    if (isSNMPable($device_tmp)) {
        $rows_updated = dbUpdate($update, 'devices', '`device_id` = ?',array($device['device_id']));

        if ($rows_updated > 0) {
            $update_message = $rows_updated . " Device record updated.";
            $updated = 1;
        } elseif ($rows_updated = '-1') {
            $update_message = "Device record unchanged. No update necessary.";
            $updated = -1;
        } else {
            $update_message = "Device record update error.";
            $updated = 0;
        }
    } else {
        $update_message = "Could not connect to device with new SNMP details";
        $updated = 0;
    }
  }
}

$device = dbFetchRow("SELECT * FROM `devices` WHERE `device_id` = ?", array($device['device_id']));
$descr  = $device['purpose'];

echo('<div class="row">
    <div class="col-sm-6">');
if ($updated && $update_message)
{
  print_message($update_message);
} elseif ($update_message) {
  print_error($update_message);
}
echo('    </div>
</div>');

echo("
<form id='edit' name='edit' method='post' action='' role='form' class='form-horizontal'>
  <input type=hidden name='editing' value='yes'>
  <div class='form-group'>
    <label for='snmpver' class='col-sm-2 control-label'>SNMP Details</label>
    <div class='col-sm-1'>
      <select id='snmpver' name='snmpver' class='form-control input-sm' onChange='changeForm();'>
        <option value='v1'>v1</option>
        <option value='v2c' " . ($device['snmpver'] == 'v2c' ? 'selected' : '') . ">v2c</option>
        <option value='v3' " . ($device['snmpver'] == 'v3' ? 'selected' : '') . ">v3</option>
      </select>
    </div>
    <div class='col-sm-2'>
      <input type='text' name='port' placeholder='port' class='form-control input-sm'>
    </div>
    <div class='col-sm-1'>
      <select name='transport' id='transport' class='form-control input-sm'>");
foreach ($config['snmp']['transports'] as $transport) {
    echo("<option value='".$transport."'");
    if ($transport == $device['transport']) {
        echo(" selected='selected'");
    }
    echo(">".$transport."</option>");
}
echo("      </select>
    </div>
  </div>
  <div class='form-group'>
    <div class='col-sm-2'>
    </div>
    <div class='col-sm-1'>
      <input id='timeout' name='timeout' class='form-control input-sm' value='" . ($device['timeout'] ? $device['timeout'] : '') . "' placeholder='seconds' />
    </div>
    <div class='col-sm-1'>
      <input id='retries' name='retries' class='form-control input-sm' value='" . ($device['timeout'] ? $device['retries'] : '') . "' placeholder='retries' />
    </div>
  </div>
  <div id='snmpv1_2'>
    <div class='form-group'>
      <label class='col-sm-3 control-label text-left'><h4><strong>SNMPv1/v2c Configuration</strong></h4></label>
    </div>
    <div class='form-group'>
      <label for='community' class='col-sm-2 control-label'>SNMP Community</label>
      <div class='col-sm-4'>
        <input id='community' class='form-control' name='community' value='" . $device['community'] . "' />
      </div>
    </div>
  </div>
  <div id='snmpv3'>
    <div class='form-group'>
      <label class='col-sm-3 control-label'><h4><strong>SNMPv3 Configuration</strong></h4></label>
    </div>
    <div class='form-group'>
      <label for='authlevel' class='col-sm-2 control-label'>Auth Level</label>
      <div class='col-sm-4'>
        <select id='authlevel' name='authlevel' class='form-control'>
          <option value='NoAuthNoPriv'>NoAuthNoPriv</option>
          <option value='AuthNoPriv' " . ($device['authlevel'] == "authNoPriv" ? 'selected' : '') . ">AuthNoPriv</option>
          <option value='AuthPriv' " . ($device['authlevel'] == "authPriv" ? 'selected' : '') . ">AuthPriv</option>
        </select>
      </div>
    </div>
    <div class='form-group'>
      <label for='authname' class='col-sm-2 control-label'>Auth User Name</label>
      <div class='col-sm-4'>
        <input type='text' id='authname' name='authname' class='form-control' value='" . $device['authname']  . "'>
      </div>
    </div>
    <div class='form-group'>
      <label for='authpass' class='col-sm-2 control-label'>Auth Password</label>
      <div class='col-sm-4'>
        <input type='password' id='authpass' name='authpass' class='form-control' value='" . $device['authpass']  . "'>
      </div>
    </div>
    <div class='form-group'>
      <label for='authalgo' class='col-sm-2 control-label'>Auth Algorithm</label>
      <div class='col-sm-4'>
        <select id='authalgo' name='authalgo' class='form-control'>
          <option value='MD5'>MD5</option>
          <option value='SHA' " . ($device['authalgo'] === "SHA" ? 'selected' : '') . ">SHA</option>
        </select>
      </div>
    </div>
    <div class='form-group'>
      <label for='cryptopass' class='col-sm-2 control-label'>Crypto Password</label>
      <div class='col-sm-4'>
        <input type='password' id='cryptopass' name='cryptopass' class='form-control' value='" . $device['cryptopass']  . "'>
      </div>
    </div>
    <div class='form-group'>
      <label for='cryptoalgo' class='col-sm-2 control-label'>Crypto Algorithm</label>
      <div class='col-sm-4'>
        <select id='cryptoalgo' name='cryptoalgo' class='form-control'>
          <option value='AES'>AES</option>
          <option value='DES' " . ($device['cryptoalgo'] === "DES" ? 'selected' : '') . ">DES</option>
        </select>
      </div>
    </div>
  </div>");

echo('
  <button type="submit" name="Submit" class="btn btn-default">Save</button>
</form>
');

?>
<script>
    function changeForm() {
        snmpVersion = $("#snmpver").val();
        if(snmpVersion == 'v1' || snmpVersion == 'v2c') {
            $('#snmpv1_2').show();
            $('#snmpv3').hide();
        } else if(snmpVersion == 'v3') {
            $('#snmpv1_2').hide();
            $('#snmpv3').show();
        }
    }
<?php

    if($snmpver == 'v3' || $device['snmpver'] == 'v3') {
        echo("$('#snmpv1_2').toggle();");
    } else {
        echo("$('#snmpv3').toggle();");
    }

?>
</script>