IfconfigCommand for network interface information

- Displays network interface information similar to the ifconfig utility.
- Handles the enumeration of network interfaces, displaying details like IP addresses, MAC address, MTU, status, and more.
- Error handling for unexpected flag inputs.

Author: siddhant-vij

src/com/unixtools/command/networking/IfconfigCommand.java

@@ -1,5 +1,54 @@
 package com.unixtools.command.networking;
 
-public class IfconfigCommand {
-  
+import com.unixtools.core.Command;
+
+import java.net.*;
+import java.util.Enumeration;
+
+public class IfconfigCommand implements Command {
+
+  @Override
+  public void execute(String[] args) {
+    if (args.length > 0) {
+      System.out.println("ifconfig: Unexpected flags provided. This command does not take flags.");
+      return;
+    }
+
+    try {
+      Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+      while (interfaces.hasMoreElements()) {
+        NetworkInterface networkInterface = interfaces.nextElement();
+        displayInterfaceInformation(networkInterface);
+      }
+    } catch (SocketException e) {
+      System.out.println("Error retrieving network interface information: " + e.getMessage());
+    }
+  }
+
+  private void displayInterfaceInformation(NetworkInterface networkInterface) throws SocketException {
+    System.out.println("Interface: " + networkInterface.getDisplayName());
+    System.out.println("Name: " + networkInterface.getName());
+
+    byte[] mac = networkInterface.getHardwareAddress();
+    if (mac != null) {
+      StringBuilder macAddress = new StringBuilder();
+      for (int i = 0; i < mac.length; i++) {
+        macAddress.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
+      }
+      System.out.println("MAC Address: " + macAddress.toString());
+    }
+
+    System.out.println("MTU: " + networkInterface.getMTU());
+    System.out.println("Up: " + networkInterface.isUp());
+    System.out.println("Loopback: " + networkInterface.isLoopback());
+    System.out.println("Virtual: " + networkInterface.isVirtual());
+
+    Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
+    while (inetAddresses.hasMoreElements()) {
+      InetAddress inetAddress = inetAddresses.nextElement();
+      System.out.println("IP Address: " + inetAddress.getHostAddress());
+    }
+
+    System.out.println();
+  }
 }

src/com/unixtools/core/CommandFactory.java

@@ -37,6 +37,8 @@ public static Command getCommand(String commandName) {
         return new CurlCommand();
       case "wget":
         return new WgetCommand();
+      case "ifconfig":
+        return new IfconfigCommand();
       default:
         return null;
     }