BE: /nettoos/interfaces endpoint

Signed-off-by: jokob-sk <jokob.sk@gmail.com>

server/api_server/nettools_endpoint.py

@@ -277,3 +277,90 @@ def internet_info():
                 "details": str(e),
             }
         ), 500
+
+
+def network_interfaces():
+    """
+    API endpoint to fetch network interface info using `nmap --iflist`.
+    Returns JSON with interface info and RX/TX bytes.
+    """
+    try:
+        # Run Nmap
+        nmap_output = subprocess.run(
+            ["nmap", "--iflist"],
+            capture_output=True,
+            text=True,
+            check=True,
+        ).stdout.strip()
+
+        # Read /proc/net/dev for RX/TX
+        rx_tx = {}
+        with open("/proc/net/dev") as f:
+            for line in f.readlines()[2:]:
+                if ":" not in line:
+                    continue
+                iface, data = line.split(":")
+                iface = iface.strip()
+                cols = data.split()
+                rx_bytes = int(cols[0])
+                tx_bytes = int(cols[8])
+                rx_tx[iface] = {"rx": rx_bytes, "tx": tx_bytes}
+
+        interfaces = {}
+
+        for line in nmap_output.splitlines():
+            line = line.strip()
+            if not line:
+                continue
+
+            # Skip header line
+            if line.startswith("DEV") or line.startswith("----"):
+                continue
+
+            # Regex to parse: DEV (SHORT) IP/MASK TYPE UP MTU MAC
+            match = re.match(
+                r"^(\S+)\s+\(([^)]*)\)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s*(\S*)",
+                line
+            )
+            if not match:
+                continue
+
+            dev, short, ipmask, type_, state, mtu_str, mac = match.groups()
+
+            # Only parse MTU if it's a number
+            try:
+                mtu = int(mtu_str)
+            except ValueError:
+                mtu = None
+
+            if dev not in interfaces:
+                interfaces[dev] = {
+                    "name": dev,
+                    "short": short,
+                    "type": type_,
+                    "state": state.lower(),
+                    "mtu": mtu,
+                    "mac": mac if mac else None,
+                    "ipv4": [],
+                    "ipv6": [],
+                    "rx_bytes": rx_tx.get(dev, {}).get("rx", 0),
+                    "tx_bytes": rx_tx.get(dev, {}).get("tx", 0),
+                }
+
+            # Parse IP/MASK
+            if ipmask != "(none)/0":
+                if ":" in ipmask:
+                    interfaces[dev]["ipv6"].append(ipmask)
+                else:
+                    interfaces[dev]["ipv4"].append(ipmask)
+
+        return jsonify({"success": True, "interfaces": interfaces}), 200
+
+    except (subprocess.CalledProcessError, ValueError, FileNotFoundError) as e:
+        return jsonify(
+            {
+                "success": False,
+                "error": "Failed to fetch network interface info",
+                "details": str(e),
+            }
+        ), 500