From 7dded4d9a244663e377898a55634916d8f8157e2 Mon Sep 17 00:00:00 2001
From: Kar <kar@siliconpin.com>
Date: Tue, 29 Apr 2025 13:43:38 +0000
Subject: [PATCH] config manager server

---
 wg_api.py | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 wg_api.py

diff --git a/wg_api.py b/wg_api.py
new file mode 100644
index 0000000..3a82f44
--- /dev/null
+++ b/wg_api.py
@@ -0,0 +1,107 @@
+import subprocess
+import base64
+from fastapi import FastAPI, Form, HTTPException, Query, Header, Depends
+from fastapi.responses import JSONResponse
+from pathlib import Path
+import uvicorn
+from dotenv import load_dotenv
+import os
+
+# Load environment variables
+load_dotenv()
+API_KEY_ENV = os.getenv("API_KEY")
+
+WG_DIR = Path("/etc/wireguard")
+SCRIPT_PATH = Path("/etc/wireguard/wg_config.sh")
+
+app = FastAPI()
+
+# Dependency to enforce API key
+def verify_api_key(x_api_key: str = Header(...)):
+    if x_api_key != API_KEY_ENV:
+        raise HTTPException(status_code=403, detail="Invalid API key")
+
+def is_valid_name(name):
+    return name.isalnum()
+
+@app.post("/vpn")
+async def create_vpn_client(
+    new: str = Form(...),
+    auth: None = Depends(verify_api_key)
+):
+    client_name = new.strip()
+    if not is_valid_name(client_name):
+        raise HTTPException(status_code=400, detail="Invalid client name")
+
+    client_dir = WG_DIR / client_name
+    conf_file = client_dir / f"{client_name}.conf"
+    png_file = client_dir / f"{client_name}.png"
+
+    if client_dir.exists():
+        return JSONResponse(status_code=409, content={"error": "Client already exists"})
+
+    try:
+        subprocess.run(
+            ["bash", str(SCRIPT_PATH), "add", client_name],
+            check=True,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE
+        )
+
+        if not conf_file.exists() or not png_file.exists():
+            raise FileNotFoundError("Missing config or QR code after creation")
+
+        config_data = conf_file.read_text()
+        with open(png_file, "rb") as f:
+            qr_base64 = base64.b64encode(f.read()).decode("utf-8")
+
+        return {
+            "client": client_name,
+            "config": config_data,
+            "qr_base64": qr_base64
+        }
+
+    except subprocess.CalledProcessError as e:
+        raise HTTPException(status_code=500, detail=f"Script error: {e.stderr.decode()}")
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@app.delete("/vpn")
+async def remove_vpn_client(
+    remove: str = Query(...),
+    auth: None = Depends(verify_api_key)
+):
+    client_name = remove.strip()
+    if not is_valid_name(client_name):
+        raise HTTPException(status_code=400, detail="Invalid client name")
+
+    client_dir = WG_DIR / client_name
+    if not client_dir.exists():
+        raise HTTPException(status_code=404, detail="Client not found")
+
+    try:
+        subprocess.run(
+            ["bash", str(SCRIPT_PATH), "remove", client_name],
+            check=True,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE
+        )
+        return {"message": f"Client '{client_name}' removed."}
+    except subprocess.CalledProcessError as e:
+        raise HTTPException(status_code=500, detail=f"Script error: {e.stderr.decode()}")
+
+
+@app.get("/vpn/list")
+async def list_vpn_clients(auth: None = Depends(verify_api_key)):
+    clients = []
+    for dir in WG_DIR.iterdir():
+        if dir.is_dir():
+            conf = dir / f"{dir.name}.conf"
+            if conf.exists():
+                clients.append(dir.name)
+    return {"clients": clients}
+
+
+if __name__ == "__main__":
+    uvicorn.run("wg_api:app", host="0.0.0.0", port=3000)