99 lines
2.9 KiB
Python
99 lines
2.9 KiB
Python
import requests
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import json
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import logging
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import time
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import aiohttp
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from fastapi import FastAPI, Header, Request, Query, HTTPException
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from fastapi.responses import JSONResponse
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from contextlib import asynccontextmanager
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logging.basicConfig(level=logging.INFO)
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@asynccontextmanager
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async def lifespan(_app: FastAPI):
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async with aiohttp.ClientSession(
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"https://ip.shronk.tech",
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connector=aiohttp.TCPConnector(limit=2048),
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raise_for_status=True
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) as client:
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_app.state.session = client
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yield
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app = FastAPI(lifespan=lifespan)
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app.state.cache = {}
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async def make_request(ip: str, headers: dict[str, str]) -> dict | HTTPException:
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try:
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async with app.state.session.get(f"/lookup?ip={ip}") as response:
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data = await response.json()
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except json.JSONDecodeError as e:
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logging.error("Failed to parse data for %s: %s", ip, e, exc_info=True)
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return HTTPException(500, "Failed to parse upstream response.")
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except Exception as e:
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logging.error("Failed to get data for %s: %s", ip, e, exc_info=True)
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return HTTPException(500, "Failed to get upstream data.")
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return data
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@app.get("/")
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async def ip(
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request: Request,
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X_Forwarded_For: str = Header(None),
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User_Agent: str = Header("Mozilla/5.0"),
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lookup: str = Query(None),
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):
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if lookup:
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ip = lookup
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elif X_Forwarded_For:
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ip = X_Forwarded_For
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else:
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ip = request.client.host
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if ip in app.state.cache:
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data, timestamp = app.state.cache[ip]
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if time.time() - timestamp < 3600:
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logging.info("cache hit for %s", ip)
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return JSONResponse(data)
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logging.info("cache expired for %s", ip)
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logging.info("looking up IP info for %s", ip)
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result = await make_request(
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ip,
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{"User-Agent": User_Agent}
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)
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if isinstance(result, HTTPException):
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return result
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logging.info("%s -> %r", ip, data)
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data["ip"] = ip
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data.pop("legalese", None)
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data.pop("source", None)
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data.pop("brexitRequired", None)
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app.state.cache[ip] = [data, time.time()]
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return JSONResponse(data)
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@app.get("/lookup")
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async def lookup(ip: str = Query(...), User_Agent: str = Header("Mozilla/5.0")):
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if ip in app.state.cache:
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data, timestamp = app.state.cache[ip]
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if time.time() - timestamp < 3600:
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logging.info("cache hit for %s", ip)
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return JSONResponse(data)
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logging.info("cache expired for %s", ip)
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logging.info("looking up IP info for %s", ip)
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result = await make_request(
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ip,
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{"User-Agent": User_Agent}
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)
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if isinstance(result, HTTPException):
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return result
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logging.info("%s -> %r", ip, data)
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data["ip"] = ip
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data.pop("legalese", None)
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data.pop("source", None)
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data.pop("brexitRequired", None)
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app.state.cache[ip] = [data, time.time()]
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return JSONResponse(data)
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