#!/usr/local/bin/php . All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ $pgtitle = array("Services", "DHCP server"); require("guiconfig.inc"); list($dnsconfig['dns1'],$dnsconfig['dns2'],$dnsconfig['dns3']) = $config['system']['dnsserver']; $if = $_GET['if']; if ($_POST['if']) $if = $_POST['if']; $iflist = array("lan" => "LAN"); for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) { $oc = $config['interfaces']['opt' . $i]; if (isset($oc['enable']) && $oc['if'] && (!$oc['bridge'])) { $iflist['opt' . $i] = $oc['descr']; } } if (!$if || !isset($iflist[$if])) $if = "lan"; $pconfig['range_from'] = $config['dhcpd'][$if]['range']['from']; $pconfig['range_to'] = $config['dhcpd'][$if]['range']['to']; $pconfig['deftime'] = $config['dhcpd'][$if]['defaultleasetime']; $pconfig['maxtime'] = $config['dhcpd'][$if]['maxleasetime']; list($pconfig['wins1'],$pconfig['wins2']) = $config['dhcpd'][$if]['winsserver']; $pconfig['enable'] = isset($config['dhcpd'][$if]['enable']); $pconfig['denyunknown'] = isset($config['dhcpd'][$if]['denyunknown']); $pconfig['nextserver'] = $config['dhcpd'][$if]['next-server']; $pconfig['filename'] = $config['dhcpd'][$if]['filename']; if (ipv6enabled()) { $pconfig['v6range_from'] = $config['dhcpd'][$if]['v6range']['from']; $pconfig['v6range_to'] = $config['dhcpd'][$if]['v6range']['to']; if (!$config['dhcpd'][$if]['v6defaultleasetime']) { $pconfig['v6deftime'] = 7200; } else { $pconfig['v6deftime'] = $config['dhcpd'][$if]['v6defaultleasetime']; } if (!$config['dhcpd'][$if]['v6maxleasetime']) { $pconfig['v6maxtime'] = 86400; } else { $pconfig['v6maxtime'] = $config['dhcpd'][$if]['v6maxleasetime']; } $pconfig['v6enable'] = isset($config['dhcpd'][$if]['v6enable']); } $ifcfg = $config['interfaces'][$if]; if (!is_array($config['dhcpd'][$if]['staticmap'])) { $config['dhcpd'][$if]['staticmap'] = array(); } staticmaps_sort($if); $a_maps = &$config['dhcpd'][$if]['staticmap']; if ($_POST) { foreach ($_POST as $pn => $pv) { if (preg_match("/^del_(\d+)_x$/", $pn, $matches)) { $id = $matches[1]; if ($a_maps[$id]) { unset($a_maps[$id]); write_config(); touch($d_staticmapsdirty_path); header("Location: services_dhcp.php?if={$if}"); exit; } } } unset($input_errors); $pconfig = $_POST; /* input validation */ if ($_POST['enable']) { $reqdfields = explode(" ", "range_from range_to"); $reqdfieldsn = explode(",", "Range begin,Range end"); do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors); if (($_POST['range_from'] && !is_ipaddr($_POST['range_from']))) { $input_errors[] = "A valid range must be specified."; } if (($_POST['range_to'] && !is_ipaddr($_POST['range_to']))) { $input_errors[] = "A valid range must be specified."; } if (($_POST['wins1'] && !is_ipaddr($_POST['wins1'])) || ($_POST['wins2'] && !is_ipaddr($_POST['wins2']))) { $input_errors[] = "A valid IP address must be specified for the primary/secondary WINS server."; } if ($_POST['deftime'] && (!is_numericint($_POST['deftime']))) { $input_errors[] = "The default lease time must be an integer."; } if ($_POST['maxtime'] && (!is_numericint($_POST['maxtime']) || ($_POST['maxtime'] <= $_POST['deftime']))) { $input_errors[] = "The maximum lease time must be higher than the default lease time."; } if ($_POST['nextserver'] && !is_ipaddr($_POST['nextserver'])) { $input_errors[] = "A valid next server IP address must be specified."; } if (ipv6enabled() && $pconfig['v6enable']) { if (!is_ipaddr6($_POST['v6range_from'])) { $input_errors[] = "A valid IPv6 range must be specified."; } else if (ipv6Uncompress($_POST['v6range_from']) == ipv6Uncompress(gen_subnet6($ifcfg['ipaddr6'], $ifcfg['subnet6']))) { $input_errors[] = "You cannot use the subnet address as a 'from' address."; } if (!is_ipaddr6($_POST['v6range_to'])) { $input_errors[] = "A valid IPv6 range must be specified."; } else if (ipv6Uncompress($_POST['v6range_to']) == ipv6Uncompress(gen_subnet_max6($ifcfg['ipaddr6'], $ifcfg['subnet6']))) { $input_errors[] = "You cannot use the broadcast address as a 'to' address."; } if ($_POST['v6range_from'] == $_POST['v6range_to']) { $input_errors[] = "IPv6 from and to are the same."; } if ($_POST['v6deftime'] && (!is_numericint($_POST['v6deftime']))) { $input_errors[] = "The default IPv6 lease time must be an integer."; } if ($_POST['v6maxtime'] && (!is_numericint($_POST['v6maxtime']) || ($_POST['v6maxtime'] <= $_POST['v6deftime']))) { $input_errors[] = "The maximum IPv6 lease time must be higher than the default IPv6 lease time."; } } if (!isset($config['dnsmasq']['enable'])) { if (ipv6enabled() && $pconfig['v6enable'] && (!is_ipaddr6($dnsconfig['dns1']) && !is_ipaddr6($dnsconfig['dns2']) && !is_ipaddr6($dnsconfig['dns3']))) { $input_errors[] = "DNS forwarder is disabled and you have no IPv6 DNS servers set, DHCPv6 may not have a valid IPv6 DNS setting to give clients."; } if ($pconfig['enable'] && (!is_ipaddr($dnsconfig['dns1']) && !is_ipaddr($dnsconfig['dns2']) && !is_ipaddr($dnsconfig['dns3']))) { $input_errors[] = "DNS forwarder is disabled and you have no IPv4 DNS servers set, DHCP may not have a valid IPv4 DNS setting to give clients."; } } if (!$input_errors) { $input_errors = array_merge($input_errors, check_dhcp_range($ifcfg['ipaddr'], $ifcfg['subnet'], $_POST['range_from'], $_POST['range_to'])); if (ipv6enabled() && $pconfig['v6enable']) $input_errors = array_merge($input_errors, check_v6dhcp_range($ifcfg['ipaddr6'], $ifcfg['subnet6'], $_POST['v6range_from'], $_POST['v6range_to'])); /* make sure that the DHCP Relay isn't enabled on this interface */ if (isset($config['dhcrelay'][$if]['enable'])) $input_errors[] = "You must disable the DHCP relay on the {$iflist[$if]} interface before enabling the DHCP server."; } } if (!$input_errors) { $config['dhcpd'][$if]['range']['from'] = $_POST['range_from']; $config['dhcpd'][$if]['range']['to'] = $_POST['range_to']; $config['dhcpd'][$if]['defaultleasetime'] = $_POST['deftime']; $config['dhcpd'][$if]['maxleasetime'] = $_POST['maxtime']; $config['dhcpd'][$if]['enable'] = $_POST['enable'] ? true : false; $config['dhcpd'][$if]['denyunknown'] = $_POST['denyunknown'] ? true : false; $config['dhcpd'][$if]['next-server'] = $_POST['nextserver']; $config['dhcpd'][$if]['filename'] = $_POST['filename']; if (ipv6enabled()) { $config['dhcpd'][$if]['v6range']['from'] = $_POST['v6range_from']; $config['dhcpd'][$if]['v6range']['to'] = $_POST['v6range_to']; $config['dhcpd'][$if]['v6defaultleasetime'] = $_POST['v6deftime']; $config['dhcpd'][$if]['v6maxleasetime'] = $_POST['v6maxtime']; $config['dhcpd'][$if]['v6enable'] = $_POST['v6enable'] ? true : false; } unset($config['dhcpd'][$if]['winsserver']); if ($_POST['wins1']) $config['dhcpd'][$if]['winsserver'][] = $_POST['wins1']; if ($_POST['wins2']) $config['dhcpd'][$if]['winsserver'][] = $_POST['wins2']; write_config(); $retval = 0; if (!file_exists($d_sysrebootreqd_path)) { config_lock(); $retval = services_dhcpd_configure(); $retval .= services_dhcp6s_configure(); config_unlock(); } $savemsg = get_std_save_message($retval); if ($retval == 0) { if (file_exists($d_staticmapsdirty_path)) unlink($d_staticmapsdirty_path); } } } ?>

You must apply the changes in order for them to take effect.");?>

    $ifname): if ($ifent == $if): ?>
  • ">
Enable IPv4 DHCP server on interface onClick="enable_change(false)"> Enable
Deny unknown clients > Only respond to reserved clients listed below.
Subnet
Subnet mask
Available range -
Range  to 
WINS servers
Default lease time seconds
This is used for clients that do not ask for a specific expiration time.
The default is 7200 seconds.
Maximum lease time seconds
This is the maximum lease time for clients that ask for a specific expiration time.
The default is 86400 seconds.
Next server
Specify the server from which clients should load the boot file. This is usually only needed with PXE booting and some VoIP phones, and can usually be left empty.
Filename
Specify the name of the boot file on the server above. This is usually only needed with PXE booting and some VoIP phones, and can usually be left empty.
Enable IPv6 DHCP server on interface onClick="enable_change(false)"> Enable
Subnet
IPv6 Range  to 
IPv6 Default lease time seconds
This is used for IPv6 clients that do not ask for a specific expiration time.
The default is 7200 seconds.
IPv6 Maximum lease time seconds
This is the maximum lease time for IPv6 clients that ask for a specific expiration time.
The default is 86400 seconds.
 
 

Note:
The DNS servers entered in System: General setup (or the DNS forwarder, if enabled) will be assigned to clients by the DHCP server.

The DHCP lease table can be viewed on the Diagnostics: DHCP leases page.
Reservations
MAC address IP address Description
    edit mapping  
add mapping