networkGatewayDefault() added

README.md

@@ -435,6 +435,7 @@ I also created a nice little command line tool called [mmon][mmon-github-url]  (
 | | [0].speed | X | | X | X | | speed in MBit / s |
 | | [0].carrierChanges | X | | | | | # changes up/down |
 | si.networkInterfaceDefault(cb) | : string | X | X | X | X | X | get name of default network interface |
+| si.networkGatewayDefault(cb) | : string | X | X | X | X | X | get default network gateway |
 | si.networkStats(ifaces,cb) | [{...}] | X | X | X | X |  | current network stats of given interfaces<br>iface list: space or comma separated<br>iface parameter is optional<br>defaults to first external network interface,<br />Pass '*' for all interfaces |
 | | [0].iface | X | X | X | X |  | interface |
 | | [0].operstate | X | X | X | X |  | up / down |

docs/index.html

@@ -191,7 +191,7 @@
     </div>
     <div class="row number-section">
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">
-        <div class="numbers">9,371</div>
+        <div class="numbers">9,445</div>
         <div class="title">Lines of code</div>
       </div>
       <div class="col-xl-4 col-lg-4 col-md-4 col-12">

docs/network.html

@@ -215,6 +215,16 @@
                     <td>X</td>
                     <td>get name of default network interface</td>
                   </tr>
+                  <tr>
+                    <td>si.networkGatewayDefault(cb)</td>
+                    <td>: string</td>
+                    <td>X</td>
+                    <td>X</td>
+                    <td>X</td>
+                    <td>X</td>
+                    <td>X</td>
+                    <td>get default network gateway</td>
+                  </tr>
                   <tr>
                     <td>si.networkStats(iface,cb)</td>
                     <td>[{...}]</td>

lib/index.d.ts

@@ -643,6 +643,7 @@ export function disksIO(cb?: (data: Systeminformation.DisksIoData) => any): Prom
 export function diskLayout(cb?: (data: Systeminformation.DiskLayoutData[]) => any): Promise<Systeminformation.DiskLayoutData[]>;
 
 export function networkInterfaceDefault(cb?: (data: string) => any): Promise<string>;
+export function networkGatewayDefault(cb?: (data: string) => any): Promise<string>;
 export function networkInterfaces(cb?: (data: Systeminformation.NetworkInterfacesData[]) => any): Promise<Systeminformation.NetworkInterfacesData[]>;
 
 export function networkStats(ifaces?: string, cb?: (data: Systeminformation.NetworkStatsData[]) => any): Promise<Systeminformation.NetworkStatsData[]>;

lib/index.js

@@ -347,6 +347,7 @@ exports.disksIO = filesystem.disksIO;
 exports.diskLayout = filesystem.diskLayout;
 
 exports.networkInterfaceDefault = network.networkInterfaceDefault;
+exports.networkGatewayDefault = network.networkGatewayDefault;
 exports.networkInterfaces = network.networkInterfaces;
 exports.networkStats = network.networkStats;
 exports.networkConnections = network.networkConnections;

lib/network.js

@@ -1002,3 +1002,73 @@ function networkConnections(callback) {
 }
 
 exports.networkConnections = networkConnections;
+
+function networkGatewayDefault(callback) {
+
+  return new Promise((resolve) => {
+    process.nextTick(() => {
+      let result = '';
+      if (_linux || _freebsd || _openbsd || _netbsd) {
+        let cmd = 'ip route get 1';
+        try {
+          exec(cmd, { maxBuffer: 1024 * 20000 }, function (error, stdout) {
+            if (!error) {
+              let lines = stdout.toString().split('\n');
+              const line = lines && lines[0] ? lines[0] : '';
+              let parts = line.split(' via ');
+              if (parts && parts[1]) {
+                parts = parts[1].split(' ');
+                result = parts[0];
+              }
+              if (callback) {
+                callback(result);
+              }
+              resolve(result);
+            }
+          });
+        } catch (e) {
+          if (callback) { callback(result); }
+          resolve(result);
+        }
+      }
+      if (_darwin) {
+        let cmd = 'route -n get default';
+        try {
+          exec(cmd, { maxBuffer: 1024 * 20000 }, function (error, stdout) {
+            if (!error) {
+              let lines = stdout.toString().split('\n').map(line => line.trim());
+              result = util.getValue(lines, 'gateway');
+              if (callback) {
+                callback(result);
+              }
+              resolve(result);
+            }
+          });
+        } catch (e) {
+          if (callback) { callback(result); }
+          resolve(result);
+        }
+      }
+      if (_windows) {
+        try {
+          util.powerShell('Get-CimInstance -ClassName Win32_IP4RouteTable | Where-Object { $_.Destination -eq \'0.0.0.0\' -and $_.Mask -eq \'0.0.0.0\' }).InterfaceIndex')
+            .then(data => {
+              let lines = data.toString().split('\r\n');
+              result = lines && lines[0] ? lines[0] : '';
+              if (callback) {
+                callback(result);
+              }
+              resolve(result);
+
+            });
+        } catch (e) {
+          if (callback) { callback(result); }
+          resolve(result);
+        }
+      }
+    });
+  });
+}
+
+
+exports.networkGatewayDefault = networkGatewayDefault;