<?php
require_once 'includes/status_messages.php';
require_once 'config.php';
/**
* Manage DHCP configuration
*/
function DisplayDHCPConfig()
{
$status = new StatusMessages();
if (!RASPI_MONITOR_ENABLED) {
if (isset($_POST['savedhcpdsettings'])) {
$errors = '';
define('IFNAMSIZ', 16);
if (!preg_match('/^[a-zA-Z0-9]+$/', $_POST['interface'])
|| strlen($_POST['interface']) >= IFNAMSIZ
) {
$errors .= _('Invalid interface name.').'<br />'.PHP_EOL;
}
if (!preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\z/', $_POST['RangeStart'])
&& !empty($_POST['RangeStart'])
) { // allow ''/null ?
$errors .= _('Invalid DHCP range start.').'<br />'.PHP_EOL;
}
if (!preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\z/', $_POST['RangeEnd'])
&& !empty($_POST['RangeEnd'])
) { // allow ''/null ?
$errors .= _('Invalid DHCP range end.').'<br />'.PHP_EOL;
}
if (!ctype_digit($_POST['RangeLeaseTime']) && $_POST['RangeLeaseTimeUnits'] !== 'infinite') {
$errors .= _('Invalid DHCP lease time, not a number.').'<br />'.PHP_EOL;
}
if (!in_array($_POST['RangeLeaseTimeUnits'], array('m', 'h', 'd', 'infinite'))) {
$errors .= _('Unknown DHCP lease time unit.').'<br />'.PHP_EOL;
}
$return = 1;
if (empty($errors)) {
$config = 'interface='.$_POST['interface'].PHP_EOL.
'dhcp-range='.$_POST['RangeStart'].','.$_POST['RangeEnd'].
',255.255.255.0,';
if ($_POST['RangeLeaseTimeUnits'] !== 'infinite') {
$config .= $_POST['RangeLeaseTime'];
}
$config .= $_POST['RangeLeaseTimeUnits'].PHP_EOL;
for ($i=0; $i < count($_POST["static_leases"]["mac"]); $i++) {
$mac = trim($_POST["static_leases"]["mac"][$i]);
$ip = trim($_POST["static_leases"]["ip"][$i]);
if ($mac != "" && $ip != "") {
$config .= "dhcp-host=$mac,$ip".PHP_EOL;
}
}
if ($_POST['no-resolv'] == "1") {
$config .= "no-resolv".PHP_EOL;
}
foreach ($_POST['server'] as $server) {
$config .= "server=$server".PHP_EOL;
}
if ($_POST['log-dhcp'] == "1") {
$config .= "log-dhcp".PHP_EOL;
}
if ($_POST['log-queries'] == "1") {
$config .= "log-queries".PHP_EOL;
}
if ($_POST['DNS1']) {
$config .= "dhcp-option=6," . $_POST['DNS1'];
if ($_POST['DNS2']) {
$config .= ','.$_POST['DNS2'];
}
$config .= PHP_EOL;
}
$config .= "log-facility=/tmp/dnsmasq.log".PHP_EOL;
$config .= "conf-dir=/etc/dnsmasq.d".PHP_EOL;
file_put_contents("/tmp/dnsmasqdata", $config);
// handle DHCP for eth0 option
if ($_POST['dhcp-eth0'] == "1" && $_POST['interface'] == "eth0") {
if (!file_exists(RASPI_CONFIG_NETWORKING.'/eth0.ini') || filesize(RASPI_CONFIG_NETWORKING.'/eth0.ini') ==0 ) {
$status->addMessage('Static IP address for eth0 not found.', 'danger');
$status->addMessage('Configure this interface in Networking > eth0.', 'danger');
$return = 1;
} else {
$dhcp_cfg = file_get_contents(RASPI_DHCPCD_CONFIG);
if (!preg_match('/^interface\seth0$/m', $dhcp_cfg)) {
// set dhcp values from ini
$eth0_cfg = parse_ini_file(RASPI_CONFIG_NETWORKING.'/eth0.ini', false, INI_SCANNER_RAW);
$ip_address = $eth0_cfg['ip_address'];
$domain_name_server = ($eth0_cfg['domain_name_server'] =='') ? '1.1.1.1 8.8.8.8' : $eth0_cfg['domain_name_server'];
// append eth0 config to dhcpcd.conf
$cfg = $dhcp_conf;
$cfg[] = '# RaspAP '.$_POST['interface'].' configuration';
$cfg[] = 'interface '.$_POST['interface'];
$cfg[] = 'static ip_address='.$ip_address;
$cfg[] = 'static domain_name_server='.$domain_name_server;
$cfg[] = PHP_EOL;
$cfg = join(PHP_EOL, $cfg);
$dhcp_cfg .= $cfg;
file_put_contents("/tmp/dhcpddata", $dhcp_cfg);
system('sudo cp /tmp/dhcpddata '.RASPI_DHCPCD_CONFIG, $return);
$status->addMessage('DHCP configuration for eth0 added.', 'success');
system('sudo cp /tmp/dnsmasqdata '.RASPI_DNSMASQ_ETH0, $return);
$status->addMessage('Dnsmasq configuration for eth0 added.', 'success');
} else {
$status->addMessage('DHCP for '.$_POST['interface'].' already enabled.', 'danger');
}
}
} elseif (!isset($_POST['dhcp-eth0']) && file_exists(RASPI_DNSMASQ_ETH0)) {
// remove dhcpcd eth0 conf
$dhcp_cfg = file_get_contents(RASPI_DHCPCD_CONFIG);
$dhcp_cfg = preg_replace('/^#\sRaspAP\seth0.*(\n.*){3,}/m', '', $dhcp_cfg);
file_put_contents("/tmp/dhcpddata", $dhcp_cfg);
system('sudo cp /tmp/dhcpddata '.RASPI_DHCPCD_CONFIG, $return);
$status->addMessage('DHCP configuration for eth0 removed.', 'success');
// remove dnsmasq eth0 conf
system('sudo rm '.RASPI_DNSMASQ_ETH0, $return);
$status->addMessage('Dnsmasq configuration for eth0 removed.', 'success');
} else {
system('sudo cp /tmp/dnsmasqdata '.RASPI_DNSMASQ_CONFIG, $return);
}
} else {
$status->addMessage($errors, 'danger');
}
if ($return == 0) {
$status->addMessage('Dnsmasq configuration updated successfully.', 'success');
} else {
$status->addMessage('Dnsmasq configuration failed to be updated.', 'danger');
}
}
}
exec('pidof dnsmasq | wc -l', $dnsmasq);
$dnsmasq_state = ($dnsmasq[0] > 0);
if (!RASPI_MONITOR_ENABLED) {
if (isset($_POST['startdhcpd'])) {
if ($dnsmasq_state) {
$status->addMessage('dnsmasq already running', 'info');
} else {
exec('sudo /bin/systemctl start dnsmasq.service', $dnsmasq, $return);
if ($return == 0) {
$status->addMessage('Successfully started dnsmasq', 'success');
$dnsmasq_state = true;
} else {
$status->addMessage('Failed to start dnsmasq', 'danger');
}
}
} elseif (isset($_POST['stopdhcpd'])) {
if ($dnsmasq_state) {
exec('sudo /bin/systemctl stop dnsmasq.service', $dnsmasq, $return);
if ($return == 0) {
$status->addMessage('Successfully stopped dnsmasq', 'success');
$dnsmasq_state = false;
} else {
$status->addMessage('Failed to stop dnsmasq', 'danger');
}
} else {
$status->addMessage('dnsmasq already stopped', 'info');
}
}
}
$serviceStatus = $dnsmasq_state ? "up" : "down";
exec('cat '. RASPI_DNSMASQ_CONFIG, $return);
$conf = ParseConfig($return);
$arrRange = explode(",", $conf['dhcp-range']);
$RangeStart = $arrRange[0];
$RangeEnd = $arrRange[1];
$RangeMask = $arrRange[2];
$leaseTime = $arrRange[3];
$dhcpHost = $conf["dhcp-host"];
$dhcpHost = empty($dhcpHost) ? [] : $dhcpHost;
$dhcpHost = is_array($dhcpHost) ? $dhcpHost : [ $dhcpHost ];
$upstreamServers = is_array($conf['server']) ? $conf['server'] : [ $conf['server'] ];
$upstreamServers = array_filter($upstreamServers);
$DNS1 = '';
$DNS2 = '';
if (isset($conf['dhcp-option'])) {
$arrDns = explode(",", $conf['dhcp-option']);
if ($arrDns[0] == '6') {
if (count($arrDns) > 1) {
$DNS1 = $arrDns[1];
}
if (count($arrDns) > 2) {
$DNS2 = $arrDns[2];
}
}
}
$hselected = '';
$mselected = '';
$dselected = '';
$infiniteselected = '';
preg_match('/([0-9]*)([a-z])/i', $leaseTime, $arrRangeLeaseTime);
if ($leaseTime === 'infinite') {
$infiniteselected = ' selected="selected"';
} else {
switch ($arrRangeLeaseTime[2]) {
case 'h':
$hselected = ' selected="selected"';
break;
case 'm':
$mselected = ' selected="selected"';
break;
case 'd':
$dselected = ' selected="selected"';
break;
}
}
if (file_exists(RASPI_DNSMASQ_ETH0)) {
$dhcp_eth0 = 1;
}
exec("ip -o link show | awk -F': ' '{print $2}'", $interfaces);
exec('cat ' . RASPI_DNSMASQ_LEASES, $leases);
echo renderTemplate(
"dhcp", compact(
"status",
"serviceStatus",
"RangeStart",
"RangeEnd",
"DNS1",
"DNS2",
"upstreamServers",
"arrRangeLeaseTime",
"mselected",
"hselected",
"dselected",
"infiniteselected",
"dnsmasq_state",
"conf",
"dhcpHost",
"interfaces",
"leases",
"dhcp_eth0"
)
);
}