File size: 7,303 Bytes
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from fastapi import Request, HTTPException
from fastapi.responses import StreamingResponse, Response
from starlette.background import BackgroundTask
from utils.Client import Client
from utils.config import chatgpt_base_url_list, proxy_url_list, enable_gateway
headers_reject_list = [
"x-real-ip",
"x-forwarded-for",
"x-forwarded-proto",
"x-forwarded-port",
"x-forwarded-host",
"x-forwarded-server",
"cf-warp-tag-id",
"cf-visitor",
"cf-ray",
"cf-connecting-ip",
"cf-ipcountry",
"cdn-loop",
"remote-host",
"x-frame-options",
"x-xss-protection",
"x-content-type-options",
"content-security-policy",
"host",
"cookie",
"connection",
"content-length",
"content-encoding",
"x-middleware-prefetch",
"x-nextjs-data",
"purpose",
"x-forwarded-uri",
"x-forwarded-path",
"x-forwarded-method",
"x-forwarded-protocol",
"x-forwarded-scheme",
"cf-request-id",
"cf-worker",
"cf-access-client-id",
"cf-access-client-device-type",
"cf-access-client-device-model",
"cf-access-client-device-name",
"cf-access-client-device-brand",
"x-middleware-prefetch",
"x-forwarded-for",
"x-forwarded-host",
"x-forwarded-proto",
"x-forwarded-server",
"x-real-ip",
"x-forwarded-port",
"cf-connecting-ip",
"cf-ipcountry",
"cf-ray",
"cf-visitor",
]
async def chatgpt_reverse_proxy(request: Request, path: str):
if not enable_gateway:
raise HTTPException(status_code=404, detail="Gateway is disabled")
try:
origin_host = request.url.netloc
if ":" in origin_host:
petrol = "http"
else:
petrol = "https"
if path.startswith("v1/"):
base_url = "https://ab.chatgpt.com"
else:
base_url = random.choice(chatgpt_base_url_list) if chatgpt_base_url_list else "https://chatgpt.com"
if "/assets" in path:
base_url = "https://cdn.oaistatic.com"
params = dict(request.query_params)
headers = {
key: value for key, value in request.headers.items()
if (key.lower() not in ["host", "origin", "referer", "user-agent",
"authorization"] and key.lower() not in headers_reject_list)
}
request_cookies = dict(request.cookies)
headers.update({
"accept-Language": "en-US,en;q=0.9",
"host": base_url.replace("https://", "").replace("http://", ""),
"origin": base_url,
"referer": f"{base_url}/",
"sec-ch-ua": '"Chromium";v="128", "Not;A=Brand";v="24", "Microsoft Edge";v="128"',
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36 Edg/128.0.0.0"
})
if request.headers.get('Authorization'):
headers['Authorization'] = request.headers['Authorization']
if headers.get("Content-Type") == "application/json":
data = await request.json()
else:
data = await request.body()
client = Client(proxy=random.choice(proxy_url_list) if proxy_url_list else None)
try:
background = BackgroundTask(client.close)
r = await client.request(request.method, f"{base_url}/{path}", params=params, headers=headers,
cookies=request_cookies, data=data, stream=True, allow_redirects=False)
if r.status_code == 304:
return Response(status_code=304, background=background)
elif r.status_code == 307:
if "oai-dm=1" not in r.headers.get("Location"):
return Response(status_code=307, headers={
"Location": r.headers.get("Location").replace("chat.openai.com", origin_host)
.replace("chatgpt.com", origin_host)
.replace("https", petrol)}, background=background)
else:
return Response(status_code=307, headers={"Location": r.headers.get("Location")},
background=background)
elif r.status_code == 302:
return Response(status_code=302,
headers={"Location": r.headers.get("Location").replace("chatgpt.com", origin_host)
.replace("chat.openai.com", origin_host)
.replace("ab.chatgpt.com", origin_host)
.replace("cdn.oaistatic.com", origin_host)
.replace("https", petrol)}, background=background)
elif 'stream' in r.headers.get("content-type", ""):
return StreamingResponse(r.aiter_content(), media_type=r.headers.get("content-type", ""),
background=background)
else:
if "/conversation" in path or "/register-websocket" in path:
response = Response(content=(await r.atext()), media_type=r.headers.get("content-type"),
status_code=r.status_code, background=background)
else:
content = ((await r.atext()).replace("chatgpt.com", origin_host)
.replace("chat.openai.com", origin_host)
.replace("ab.chatgpt.com", origin_host)
.replace("cdn.oaistatic.com", origin_host)
.replace("https", petrol))
rheaders = dict(r.headers)
cache_control = rheaders.get("cache-control", "")
content_type = rheaders.get("content-type", "")
rheaders = {
"cache-control": cache_control,
"content-type": content_type
}
response = Response(content=content, headers=rheaders,
status_code=r.status_code, background=background)
for cookie_name in r.cookies:
if cookie_name in request_cookies:
continue
for cookie_domain in [".chatgpt.com"]:
cookie_value = r.cookies.get(name=cookie_name, domain=cookie_domain)
if cookie_name.startswith("__"):
response.set_cookie(key=cookie_name, value=cookie_value, secure=True, httponly=True)
else:
response.set_cookie(key=cookie_name, value=cookie_value)
return response
except Exception:
await client.close()
except Exception as e:
raise HTTPException(status_code=500, detail=str(e))
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