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raspap-webgui/includes/wireguard.php

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<?php
require_once 'includes/status_messages.php';
require_once 'config.php';
/**
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* Displays wireguard server & peer configuration
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*/
function DisplayWireGuardConfig()
{
$status = new StatusMessages();
if (!RASPI_MONITOR_ENABLED) {
$optRules = $_POST['wgRules'];
if (isset($_POST['savewgsettings']) && !is_uploaded_file($_FILES["wgFile"]["tmp_name"])) {
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SaveWireGuardConfig($status);
} elseif (isset($_POST['savewgsettings']) && is_uploaded_file($_FILES["wgFile"]["tmp_name"])) {
SaveWireGuardUpload($status, $_FILES['wgFile'], $optRules);
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} elseif (isset($_POST['startwg'])) {
$status->addMessage('Attempting to start WireGuard', 'info');
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exec('sudo /bin/systemctl start wg-quick@wg0', $return);
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foreach ($return as $line) {
$status->addMessage($line, 'info');
}
} elseif (isset($_POST['stopwg'])) {
$status->addMessage('Attempting to stop WireGuard', 'info');
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exec('sudo /bin/systemctl stop wg-quick@wg0', $return);
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foreach ($return as $line) {
$status->addMessage($line, 'info');
}
}
}
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// fetch wg config
exec('sudo cat '. RASPI_WIREGUARD_CONFIG, $return);
$conf = ParseConfig($return);
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$wg_srvpubkey = exec('sudo cat '. RASPI_WIREGUARD_PATH .'wg-server-public.key', $return);
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$wg_srvport = ($conf['ListenPort'] == '') ? getDefaultNetValue('wireguard','server','ListenPort') : $conf['ListenPort'];
$wg_srvipaddress = ($conf['Address'] == '') ? getDefaultNetValue('wireguard','server','Address') : $conf['Address'];
$wg_srvdns = ($conf['DNS'] == '') ? getDefaultNetValue('wireguard','server','DNS') : $conf['DNS'];
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$wg_peerpubkey = exec('sudo cat '. RASPI_WIREGUARD_PATH .'wg-peer-public.key', $return);
if (sizeof($conf) >0) {
$wg_senabled = true;
}
// todo: iterate multiple peer configs
exec('sudo cat '. RASPI_WIREGUARD_PATH.'client.conf', $preturn);
$conf = ParseConfig($preturn);
$wg_pipaddress = ($conf['Address'] == '') ? getDefaultNetValue('wireguard','peer','Address') : $conf['Address'];
$wg_plistenport = ($conf['ListenPort'] == '') ? getDefaultNetValue('wireguard','peer','ListenPort') : $conf['ListenPort'];
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$wg_pendpoint = ($conf['Endpoint'] == '') ? getDefaultNetValue('wireguard','peer','Endpoint') : $conf['Endpoint'];
$wg_pallowedips = ($conf['AllowedIPs'] == '') ? getDefaultNetValue('wireguard','peer','AllowedIPs') : $conf['AllowedIPs'];
$wg_pkeepalive = ($conf['PersistentKeepalive'] == '') ? getDefaultNetValue('wireguard','peer','PersistentKeepalive') : $conf['PersistentKeepalive'];
if (sizeof($conf) >0) {
$wg_penabled = true;
}
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// fetch service status
exec('pidof wg-crypt-wg0 | wc -l', $wgstatus);
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$serviceStatus = $wgstatus[0] == 0 ? "down" : "up";
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$wg_state = ($wgstatus[0] > 0);
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$public_ip = get_public_ip();
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echo renderTemplate(
"wireguard", compact(
"status",
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"wg_state",
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"serviceStatus",
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"public_ip",
"optRules",
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"wg_log",
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"peer_id",
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"wg_srvpubkey",
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"wg_srvport",
"wg_srvipaddress",
"wg_srvdns",
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"wg_senabled",
"wg_penabled",
"wg_pipaddress",
"wg_plistenport",
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"wg_peerpubkey",
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"wg_pendpoint",
"wg_pallowedips",
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"wg_pkeepalive"
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)
);
}
/**
* Validates uploaded .conf file, adds iptables post-up and
* post-down rules.
*
* @param object $status
* @param object $file
* @param boolean $optRules
* @return object $status
*/
function SaveWireGuardUpload($status, $file, $optRules)
{
define('KB', 1024);
$tmp_destdir = '/tmp/';
$auth_flag = 0;
try {
// If undefined or multiple files, treat as invalid
if (!isset($file['error']) || is_array($file['error'])) {
throw new RuntimeException('Invalid parameters');
}
$upload = \RaspAP\Uploader\Upload::factory('wg',$tmp_destdir);
$upload->set_max_file_size(64*KB);
$upload->set_allowed_mime_types(array('text/plain'));
$upload->file($file);
$validation = new validation;
$upload->callbacks($validation, array('check_name_length'));
$results = $upload->upload();
if (!empty($results['errors'])) {
throw new RuntimeException($results['errors'][0]);
}
// Valid upload, get file contents
$tmp_wgconfig = $results['full_path'];
$tmp_contents = file_get_contents($tmp_wgconfig);
// Set iptables rules
if (isset($optRules) && !preg_match('/PostUp|PostDown/m',$tmp_contents)) {
$rules[] = 'PostUp = '.getDefaultNetValue('wireguard','server','PostUp');
$rules[] = 'PostDown = '.getDefaultNetValue('wireguard','server','PostDown');
$rules[] = '';
$rules = join(PHP_EOL, $rules);
$rules = preg_replace('/wlan0/m', $_SESSION['ap_interface'], $rules);
$tmp_contents = preg_replace('/^\s*$/ms', $rules, $tmp_contents, 1);
file_put_contents($tmp_wgconfig, $tmp_contents);
}
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// Move processed file from tmp to destination
system("sudo mv $tmp_wgconfig ". RASPI_WIREGUARD_CONFIG, $return);
if ($return ==0) {
$status->addMessage('WireGuard configuration uploaded successfully', 'info');
} else {
$status->addMessage('Unable to save WireGuard configuration', 'danger');
}
return $status;
} catch (RuntimeException $e) {
$status->addMessage($e->getMessage(), 'danger');
return $status;
}
}
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/**
* Validate user input, save wireguard configuration
*
* @param object $status
* @return boolean
*/
function SaveWireGuardConfig($status)
{
// Set defaults
$good_input = true;
$peer_id = 1;
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// Validate server input
if ($_POST['wg_senabled'] == 1) {
if (isset($_POST['wg_srvport'])) {
if (strlen($_POST['wg_srvport']) > 5 || !is_numeric($_POST['wg_srvport'])) {
$status->addMessage('Invalid value for server local port', 'danger');
$good_input = false;
}
}
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if (isset($_POST['wg_plistenport'])) {
if (strlen($_POST['wg_plistenport']) > 5 || !is_numeric($_POST['wg_plistenport'])) {
$status->addMessage('Invalid value for peer local port', 'danger');
$good_input = false;
}
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}
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if (isset($_POST['wg_srvipaddress'])) {
if (!validateCidr($_POST['wg_srvipaddress'])) {
$status->addMessage('Invalid value for server IP address', 'danger');
$good_input = false;
}
}
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if (isset($_POST['wg_srvdns'])) {
if (!filter_var($_POST['wg_srvdns'],FILTER_VALIDATE_IP)) {
$status->addMessage('Invalid value for DNS', 'danger');
$good_input = false;
}
}
}
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// Validate peer input
if ($_POST['wg_penabled'] == 1) {
if (isset($_POST['wg_pipaddress'])) {
if (!validateCidr($_POST['wg_pipaddress'])) {
$status->addMessage('Invalid value for peer IP address', 'danger');
$good_input = false;
}
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}
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if (isset($_POST['wg_pendpoint']) && strlen(trim($_POST['wg_pendpoint']) >0 )) {
$wg_pendpoint_seg = substr($_POST['wg_pendpoint'],0,strpos($_POST['wg_pendpoint'],':'));
if (!filter_var($wg_pendpoint_seg,FILTER_VALIDATE_IP)) {
$status->addMessage('Invalid value for endpoint address', 'danger');
$good_input = false;
}
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}
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if (isset($_POST['wg_pallowedips']) && strlen(trim($_POST['wg_pallowedips']) >0)) {
if (!validateCidr($_POST['wg_pallowedips'])) {
$status->addMessage('Invalid value for allowed IPs', 'danger');
$good_input = false;
}
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}
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if (isset($_POST['wg_pkeepalive']) && strlen(trim($_POST['wg_pkeepalive']) >0 )) {
if (strlen($_POST['wg_pkeepalive']) > 4 || !is_numeric($_POST['wg_pkeepalive'])) {
$status->addMessage('Invalid value for persistent keepalive', 'danger');
$good_input = false;
}
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}
}
// Save settings
if ($good_input) {
// server (wg0.conf)
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if ($_POST['wg_senabled'] == 1) {
// fetch server private key from filesytem
$wg_srvprivkey = exec('sudo cat '. RASPI_WIREGUARD_PATH .'wg-server-private.key', $return);
$config[] = '[Interface]';
$config[] = 'Address = '.$_POST['wg_srvipaddress'];
$config[] = 'ListenPort = '.$_POST['wg_srvport'];
$config[] = 'DNS = '.$_POST['wg_srvdns'];
$config[] = 'PrivateKey = '.$wg_srvprivkey;
$config[] = 'PostUp = '.getDefaultNetValue('wireguard','server','PostUp');
$config[] = 'PostDown = '.getDefaultNetValue('wireguard','server','PostDown');
$config[] = '';
$config[] = '[Peer]';
$config[] = 'PublicKey = '.$_POST['wg-peer'];
$config[] = 'AllowedIPs = '.$_POST['wg_pallowedips'];
if ($_POST['wg_pkeepalive'] !== '') {
$config[] = 'PersistentKeepalive = '.trim($_POST['wg_pkeepalive']);
}
$config[] = '';
$config = join(PHP_EOL, $config);
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file_put_contents("/tmp/wgdata", $config);
system('sudo cp /tmp/wgdata '.RASPI_WIREGUARD_CONFIG, $return);
} else {
# remove selected conf + keys
system('sudo rm '. RASPI_WIREGUARD_PATH .'wg-server-private.key', $return);
system('sudo rm '. RASPI_WIREGUARD_PATH .'wg-server-public.key', $return);
system('sudo rm '. RASPI_WIREGUARD_CONFIG, $return);
}
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// client1 (client.conf)
if ($_POST['wg_penabled'] == 1) {
// fetch peer private key from filesystem
$wg_peerprivkey = exec('sudo cat '. RASPI_WIREGUARD_PATH .'wg-peer-private.key', $return);
$config = [];
$config[] = '[Interface]';
$config[] = 'Address = '.trim($_POST['wg_pipaddress']);
$config[] = 'PrivateKey = '.$wg_peerprivkey;
$config[] = 'ListenPort = '.$_POST['wg_plistenport'];
$config[] = '';
$config[] = '[Peer]';
$config[] = 'PublicKey = '.$_POST['wg-server'];
$config[] = 'AllowedIPs = '.$_POST['wg_pallowedips'];
$config[] = 'Endpoint = '.$_POST['wg_pendpoint'];
if ($_POST['wg_pkeepalive'] !== '') {
$config[] = 'PersistentKeepalive = '.trim($_POST['wg_pkeepalive']);
}
$config[] = '';
$config = join(PHP_EOL, $config);
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file_put_contents("/tmp/wgdata", $config);
system('sudo cp /tmp/wgdata '.RASPI_WIREGUARD_PATH.'client.conf', $return);
} else {
# remove selected conf + keys
system('sudo rm '. RASPI_WIREGUARD_PATH .'wg-peer-private.key', $return);
system('sudo rm '. RASPI_WIREGUARD_PATH .'wg-peer-public.key', $return);
system('sudo rm '. RASPI_WIREGUARD_PATH.'client.conf', $return);
}
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// handle log option
if ($_POST['wg_log'] == "1") {
exec("sudo /bin/systemctl status wg-quick@wg0 | sudo tee /tmp/wireguard.log > /dev/null");
}
foreach ($return as $line) {
$status->addMessage($line, 'info');
}
if ($return == 0) {
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$status->addMessage('WireGuard configuration updated successfully', 'success');
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} else {
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$status->addMessage('WireGuard configuration failed to be updated', 'danger');
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}
}
}