From 6196bcd311f1781ebd36fbbc0be918700f251531 Mon Sep 17 00:00:00 2001
From: glaszig <glaszig@gmail.com>
Date: Sat, 3 Apr 2021 00:43:42 +0100
Subject: [PATCH] add 'default route' toggle to network interface configuration
 ui

---
 ajax/networking/get_netcfg.php |  2 ++
 app/js/custom.js               |  1 +
 includes/dhcp.php              |  1 +
 templates/dhcp/general.php     | 12 ++++++++++++
 4 files changed, 16 insertions(+)

diff --git a/ajax/networking/get_netcfg.php b/ajax/networking/get_netcfg.php
index 2dd330bb..7e7b8fa7 100644
--- a/ajax/networking/get_netcfg.php
+++ b/ajax/networking/get_netcfg.php
@@ -45,12 +45,14 @@ if (isset($interface)) {
     preg_match('/static\srouters=(.*)/', $matched[0], $static_routers);
     preg_match('/static\sdomain_name_server=(.*)/', $matched[0], $static_dns);
     preg_match('/fallback\sstatic_'.$interface.'/', $matched[0], $fallback);
+    preg_match('/(?:no)?gateway/', $matched[0], $gateway);
     $dhcpdata['Metric'] = $metric[1];
     $dhcpdata['StaticIP'] = strpos($static_ip[1],'/') ?  substr($static_ip[1], 0, strpos($static_ip[1],'/')) : $static_ip[1];
     $dhcpdata['SubnetMask'] = cidr2mask($static_ip[1]);
     $dhcpdata['StaticRouters'] = $static_routers[1];
     $dhcpdata['StaticDNS'] = $static_dns[1];
     $dhcpdata['FallbackEnabled'] = empty($fallback) ? false: true;
+    $dhcpdata['DefaultRoute'] = empty($gateway) || $gateway[0] == "gateway";
 
     echo json_encode($dhcpdata);
 }
diff --git a/app/js/custom.js b/app/js/custom.js
index 7a885472..13f0db92 100644
--- a/app/js/custom.js
+++ b/app/js/custom.js
@@ -186,6 +186,7 @@ function loadInterfaceDHCPSelect() {
         $('#txtsubnetmask').val(jsonData.SubnetMask);
         $('#txtgateway').val(jsonData.StaticRouters);
         $('#chkfallback')[0].checked = jsonData.FallbackEnabled;
+        $('#default-route').prop('checked', jsonData.DefaultRoute);
         $('#txtrangestart').val(jsonData.RangeStart);
         $('#txtrangeend').val(jsonData.RangeEnd);
         $('#txtrangeleasetime').val(jsonData.leaseTime);
diff --git a/includes/dhcp.php b/includes/dhcp.php
index bc323200..38d69ea5 100755
--- a/includes/dhcp.php
+++ b/includes/dhcp.php
@@ -244,6 +244,7 @@ function updateDHCPConfig($iface,$status)
         $cfg[] = 'profile static_'.$iface;
         $cfg[] = 'fallback static_'.$iface;
     }
+    $cfg[] = $_POST['DefaultRoute'] == '1' ? 'gateway' : 'nogateway';
     $dhcp_cfg = file_get_contents(RASPI_DHCPCD_CONFIG);
     if (!preg_match('/^interface\s'.$iface.'$/m', $dhcp_cfg)) {
         $cfg[] = PHP_EOL;
diff --git a/templates/dhcp/general.php b/templates/dhcp/general.php
index 49758696..83bc3504 100644
--- a/templates/dhcp/general.php
+++ b/templates/dhcp/general.php
@@ -55,6 +55,18 @@
     </div>
   </div>
 
+  <div class="row">
+    <div class="form-group col-md-6">
+        <div class="custom-control custom-switch">
+          <input class="custom-control-input" id="default-route" type="checkbox" name="DefaultRoute" value="1" aria-describedby="default-route-description">
+          <label class="custom-control-label" for="default-route"><?php echo _("Install a default route for this interface") ?></label>
+        </div>
+        <p class="mb-0" id="default-route-description">
+          <small><?php echo _("This toggles the <code>gateway</code>/<code>nogateway</code> option for this interface in the DHCPCD configuration.") ?></small>
+        </p>
+    </div>
+  </div>
+
   <h5 class="mt-1">DHCP options</h5>
   <div class="row">
     <div class="form-group col-md-6">