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import json
import random
import time
import uuid
from datetime import datetime, timezone
from fastapi import Request, HTTPException
from fastapi.responses import StreamingResponse, Response
from starlette.background import BackgroundTask
import utils.globals as globals
from chatgpt.authorization import verify_token, get_req_token
from chatgpt.fp import get_fp
from utils.Client import Client
from utils.Logger import logger
from utils.configs import chatgpt_base_url_list, sentinel_proxy_url_list, force_no_history, file_host, voice_host
def generate_current_time():
current_time = datetime.now(timezone.utc)
formatted_time = current_time.isoformat(timespec='microseconds').replace('+00:00', 'Z')
return formatted_time
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 get_real_req_token(token):
req_token = get_req_token(token)
if len(req_token) == 45 or req_token.startswith("eyJhbGciOi"):
return req_token
else:
req_token = get_req_token(None, token)
return req_token
def save_conversation(token, conversation_id, title=None):
if conversation_id not in globals.conversation_map:
conversation_detail = {
"id": conversation_id,
"title": title,
"update_time": generate_current_time()
}
globals.conversation_map[conversation_id] = conversation_detail
else:
globals.conversation_map[conversation_id]["update_time"] = generate_current_time()
if title:
globals.conversation_map[conversation_id]["title"] = title
if conversation_id not in globals.seed_map[token]["conversations"]:
globals.seed_map[token]["conversations"].insert(0, conversation_id)
else:
globals.seed_map[token]["conversations"].remove(conversation_id)
globals.seed_map[token]["conversations"].insert(0, conversation_id)
with open(globals.CONVERSATION_MAP_FILE, "w", encoding="utf-8") as f:
json.dump(globals.conversation_map, f, indent=4)
with open(globals.SEED_MAP_FILE, "w", encoding="utf-8") as f:
json.dump(globals.seed_map, f, indent=4)
if title:
logger.info(f"Conversation ID: {conversation_id}, Title: {title}")
async def content_generator(r, token, history=True):
conversation_id = None
title = None
async for chunk in r.aiter_content():
try:
if history and (len(token) != 45 and not token.startswith("eyJhbGciOi")) and (not conversation_id or not title):
chat_chunk = chunk.decode('utf-8')
if chat_chunk.startswith("data: {"):
if "\n\nevent: delta" in chat_chunk:
index = chat_chunk.find("\n\nevent: delta")
chunk_data = chat_chunk[6:index]
elif "\n\ndata: {" in chat_chunk:
index = chat_chunk.find("\n\ndata: {")
chunk_data = chat_chunk[6:index]
else:
chunk_data = chat_chunk[6:]
chunk_data = chunk_data.strip()
if conversation_id is None:
conversation_id = json.loads(chunk_data).get("conversation_id")
save_conversation(token, conversation_id)
title = globals.conversation_map[conversation_id].get("title")
if title is None:
if "title" in chunk_data:
pass
title = json.loads(chunk_data).get("title")
if title:
save_conversation(token, conversation_id, title)
except Exception as e:
# logger.error(e)
# logger.error(chunk.decode('utf-8'))
pass
yield chunk
async def chatgpt_reverse_proxy(request: Request, path: str):
try:
origin_host = request.url.netloc
if request.url.is_secure:
petrol = "https"
else:
petrol = "http"
if "x-forwarded-proto" in request.headers:
petrol = request.headers["x-forwarded-proto"]
if "cf-visitor" in request.headers:
cf_visitor = json.loads(request.headers["cf-visitor"])
petrol = cf_visitor.get("scheme", petrol)
params = dict(request.query_params)
request_cookies = dict(request.cookies)
headers = {
key: value for key, value in request.headers.items()
if (key.lower() not in ["host", "origin", "referer", "priority",
"oai-device-id"] and key.lower() not in headers_reject_list)
}
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"
if "file-" in path and "backend-api" not in path:
base_url = "https://files.oaiusercontent.com"
if "v1/" in path:
base_url = "https://ab.chatgpt.com"
token = request.cookies.get("token", "")
req_token = await get_real_req_token(token)
fp = get_fp(req_token).copy()
proxy_url = fp.pop("proxy_url", None)
impersonate = fp.pop("impersonate", "safari15_3")
user_agent = fp.get("user-agent")
headers.update(fp)
headers.update({
"accept-language": "en-US,en;q=0.9",
"host": base_url.replace("https://", "").replace("http://", ""),
"origin": base_url,
"referer": f"{base_url}/"
})
if "v1/initialize" in path:
headers.update({"user-agent": request.headers.get("user-agent")})
if "statsig-api-key" not in headers:
headers.update({
"statsig-sdk-type": "js-client",
"statsig-api-key": "client-tnE5GCU2F2cTxRiMbvTczMDT1jpwIigZHsZSdqiy4u",
"statsig-sdk-version": "5.1.0",
"statsig-client-time": int(time.time() * 1000),
})
token = headers.get("authorization", "").replace("Bearer ", "")
if token:
req_token = await get_real_req_token(token)
access_token = await verify_token(req_token)
headers.update({"authorization": f"Bearer {access_token}"})
data = await request.body()
history = True
if path.endswith("backend-api/conversation"):
try:
req_json = json.loads(data)
history = not req_json.get("history_and_training_disabled", False)
except Exception:
pass
if force_no_history:
history = False
req_json = json.loads(data)
req_json["history_and_training_disabled"] = True
data = json.dumps(req_json).encode("utf-8")
if sentinel_proxy_url_list and "backend-api/sentinel/chat-requirements" in path:
client = Client(proxy=random.choice(sentinel_proxy_url_list))
else:
client = Client(proxy=proxy_url, impersonate=impersonate)
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 == 307 or r.status_code == 302 or r.status_code == 301:
return Response(status_code=307,
headers={"Location": r.headers.get("Location")
.replace("ab.chatgpt.com", origin_host)
.replace("chatgpt.com", origin_host)
.replace("cdn.oaistatic.com", origin_host)
.replace("https", petrol)}, background=background)
elif 'stream' in r.headers.get("content-type", ""):
logger.info(f"Request token: {req_token}")
logger.info(f"Request proxy: {proxy_url}")
logger.info(f"Request UA: {user_agent}")
logger.info(f"Request impersonate: {impersonate}")
conv_key = r.cookies.get("conv_key", "")
response = StreamingResponse(content_generator(r, token, history), media_type=r.headers.get("content-type", ""),
background=background)
response.set_cookie("conv_key", value=conv_key)
return response
elif 'image' in r.headers.get("content-type", "") or "audio" in r.headers.get("content-type", "") or "video" in r.headers.get("content-type", ""):
rheaders = dict(r.headers)
response = Response(content=await r.acontent(), headers=rheaders,
status_code=r.status_code, background=background)
return response
else:
if "/backend-api/conversation" in path or "/register-websocket" in path:
response = Response(content=(await r.acontent()), media_type=r.headers.get("content-type"),
status_code=r.status_code, background=background)
else:
content = await r.atext()
if "public-api/" in path:
content = (content
.replace("https://ab.chatgpt.com", f"{petrol}://{origin_host}")
.replace("https://cdn.oaistatic.com", f"{petrol}://{origin_host}")
.replace("webrtc.chatgpt.com", voice_host if voice_host else "webrtc.chatgpt.com")
.replace("files.oaiusercontent.com", file_host if file_host else "files.oaiusercontent.com")
.replace("chatgpt.com/ces", f"{origin_host}/ces")
)
else:
content = (content
.replace("https://ab.chatgpt.com", f"{petrol}://{origin_host}")
.replace("https://cdn.oaistatic.com", f"{petrol}://{origin_host}")
.replace("webrtc.chatgpt.com", voice_host if voice_host else "webrtc.chatgpt.com")
.replace("files.oaiusercontent.com", file_host if file_host else "files.oaiusercontent.com")
.replace("https://chatgpt.com", f"{petrol}://{origin_host}")
.replace("chatgpt.com/ces", f"{origin_host}/ces")
)
rheaders = dict(r.headers)
content_type = rheaders.get("content-type", "")
cache_control = rheaders.get("cache-control", "")
expires = rheaders.get("expires", "")
content_disposition = rheaders.get("content-disposition", "")
rheaders = {
"cache-control": cache_control,
"content-type": content_type,
"expires": expires,
"content-disposition": content_disposition
}
response = Response(content=content, headers=rheaders,
status_code=r.status_code, background=background)
return response
except Exception:
await client.close()
except HTTPException as e:
raise e
except Exception as e:
raise HTTPException(status_code=500, detail=str(e))
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