From 0615d83134d9ce698b0dec321fe47dc9c1469799 Mon Sep 17 00:00:00 2001
From: malmert <marcus.almert@gmail.com>
Date: Sat, 22 Nov 2025 23:25:39 +0100
Subject: [PATCH] feat: add netplan configuration models and backend API for
 applying netplan

---
 backend/src/Models/netplan.py | 36 ++++++++++++++
 backend/src/main.py           | 34 ++++++++++++-
 start_dev.sh                  | 92 +++++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+), 1 deletion(-)
 create mode 100644 backend/src/Models/netplan.py
 create mode 100755 start_dev.sh

diff --git a/backend/src/Models/netplan.py b/backend/src/Models/netplan.py
new file mode 100644
index 0000000..abe9b7a
--- /dev/null
+++ b/backend/src/Models/netplan.py
@@ -0,0 +1,36 @@
+from pydantic import BaseModel, Field
+from typing import List, Dict, Optional
+
+
+class Nameservers(BaseModel):
+    addresses: List[str] = Field(default_factory=list)
+    search: List[str] = Field(default_factory=list)
+
+
+class EthernetConfig(BaseModel):
+    dhcp4: Optional[bool] = None
+    dhcp6: Optional[bool] = None
+    addresses: Optional[List[str]] = None
+    gateway4: Optional[str] = None
+    gateway6: Optional[str] = None
+    nameservers: Optional[Nameservers] = None
+    optional: Optional[bool] = None
+
+
+class BridgeConfig(BaseModel):
+    interfaces: List[str] = Field(default_factory=list)  # ["eth1", "eth2"]
+    dhcp4: Optional[bool] = None
+    dhcp6: Optional[bool] = None
+    addresses: Optional[List[str]] = None
+    gateway4: Optional[str] = None
+    gateway6: Optional[str] = None
+    nameservers: Optional[Nameservers] = None
+    parameters: Optional[dict] = None  # allows spanning-tree, port-priority, forward-delay, etc.
+    optional: Optional[bool] = None
+
+
+class NetworkConfig(BaseModel):
+    version: int = 2
+    renderer: Optional[str] = "networkd"
+    ethernets: Dict[str, EthernetConfig] = Field(default_factory=dict)
+    bridges: Dict[str, BridgeConfig] = Field(default_factory=dict)
diff --git a/backend/src/main.py b/backend/src/main.py
index e58cd31..0f980bf 100644
--- a/backend/src/main.py
+++ b/backend/src/main.py
@@ -1,3 +1,6 @@
+from asyncio import subprocess
+from http.client import HTTPException
+import src.Models.netplan as netplan
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 import os
@@ -25,4 +28,33 @@ def read_root():
 @app.get("/api/nft/ruleset")
 def read_root():
     message = os.popen("sudo nft --json list ruleset").read().strip()
-    return {"message": message}
\ No newline at end of file
+    return {"message": message}
+
+
+NETPLAN_FILE = "/etc/netplan/99-app.yaml"
+
+@app.post("/netplan/apply")
+def apply_netplan(config: netplan.NetworkConfig):
+    try:
+        data = {"network": config.dict(exclude_none=True)}
+
+        with open(NETPLAN_FILE, "w") as f:
+            yaml.dump(data, f, sort_keys=False)
+
+        # Safety: rollback if config breaks connectivity
+        result = subprocess.run(
+            ["netplan", "try", "--timeout", "10"],
+            capture_output=True,
+            text=True,
+        )
+
+        if result.returncode != 0:
+            raise HTTPException(
+                status_code=500,
+                detail=f"Netplan failed: {result.stderr}"
+            )
+
+        return {"status": "ok", "output": result.stdout}
+
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
\ No newline at end of file
diff --git a/start_dev.sh b/start_dev.sh
new file mode 100755
index 0000000..eb61bbe
--- /dev/null
+++ b/start_dev.sh
@@ -0,0 +1,92 @@
+#!/bin/bash
+
+set -e
+
+# Kill children on exit
+cleanup() {
+    echo
+    echo "🛑 Stopping dev environment…"
+    kill 0 2>/dev/null
+}
+trap cleanup EXIT
+
+START_BE=true
+START_FE=true
+
+case "$1" in
+    backend|be)
+        START_FE=false
+        ;;
+    frontend|fe)
+        START_BE=false
+        ;;
+    "" )
+        # default → both
+        ;;
+    * )
+        echo "❌ Unknown argument: $1"
+        echo "Usage:"
+        echo "  ./dev.sh      → start both"
+        echo "  ./dev.sh be   → start backend only"
+        echo "  ./dev.sh fe   → start frontend only"
+        exit 1
+        ;;
+esac
+
+
+###############################
+# Backend
+###############################
+if [ "$START_BE" = true ]; then
+(
+    echo "🚀 Starting backend…"
+    cd backend || { echo "❌ backend folder missing"; exit 1; }
+
+    if [ ! -d venv ]; then
+        echo "⚙️ Creating virtual environment…"
+        python3 -m venv venv
+        ./venv/bin/pip install -r requirements.txt
+    fi
+
+    echo "📡 Backend at http://localhost:8000"
+    ./venv/bin/uvicorn src.main:app --reload --host 0.0.0.0 --port 8000
+) &
+BE_PID=$!
+else
+    echo "⏭ Skipping backend"
+fi
+
+
+###############################
+# Frontend
+###############################
+if [ "$START_FE" = true ]; then
+(
+    echo "🚀 Starting frontend…"
+    cd frontend || { echo "❌ frontend folder missing"; exit 1; }
+
+    if [ ! -d node_modules ]; then
+        echo "📦 Installing frontend dependencies…"
+        npm install
+    fi
+
+    echo "🌍 Frontend at http://localhost:5173"
+    npm run dev-local
+) &
+FE_PID=$!
+else
+    echo "⏭ Skipping frontend"
+fi
+
+
+###############################
+# Wait for both
+###############################
+echo
+echo "💡 Dev environment running."
+[ "$START_BE" = true ] && echo "   Backend PID:  $BE_PID"
+[ "$START_FE" = true ] && echo "   Frontend PID: $FE_PID"
+echo "   Press CTRL+C to stop everything."
+echo
+
+wait