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from __future__ import annotations
import asyncio
import base64
import json
import os
import time
import uuid
from collections.abc import Awaitable
from contextlib import suppress
from dataclasses import dataclass
from pathlib import Path
from typing import Any
import httpx
from free_claude_code.application.connected_accounts import (
ConnectedAccountLoginMode,
ConnectedAccountState,
ConnectedAccountStatus,
)
from free_claude_code.config.paths import openai_auth_lock_path, openai_auth_path
from free_claude_code.core.interprocess_lock import InterprocessFileLock
from .login import (
OPENAI_CODEX_ORIGINATOR,
OPENAI_OAUTH_CLIENT_ID,
OPENAI_REVOKE_URL,
OPENAI_TOKEN_URL,
AuthorizationGrant,
BrowserAuthorization,
OpenAILoginError,
request_device_authorization,
wait_for_device_grant,
)
REFRESH_EARLY_SECONDS = 5 * 60
class OpenAIReconnectRequired(RuntimeError):
"""The saved ChatGPT session is absent or no longer renewable."""
@dataclass(frozen=True, slots=True, repr=False)
class OpenAIAccess:
"""Current upstream authorization headers."""
access_token: str
account_id: str
fedramp: bool
@dataclass(frozen=True, slots=True, repr=False)
class _Credentials:
access_token: str
refresh_token: str
id_token: str
account_id: str
email: str | None
expires_at: int
fedramp: bool
@classmethod
def from_tokens(
cls,
*,
access_token: str,
refresh_token: str,
id_token: str,
) -> _Credentials:
access_claims = _optional_jwt_claims(access_token)
id_claims = _jwt_claims(id_token)
auth_claims = _mapping_claim(
access_claims, "https://api.openai.com/auth"
) or _mapping_claim(id_claims, "https://api.openai.com/auth")
account_id = _string_claim(auth_claims, "chatgpt_account_id")
if not account_id:
raise OpenAILoginError(
"OpenAI sign-in did not return a ChatGPT account identifier."
)
profile = _mapping_claim(id_claims, "https://api.openai.com/profile")
email = _string_claim(id_claims, "email") or _string_claim(profile, "email")
expires_at = _integer_claim(access_claims, "exp")
if expires_at is None:
expires_at = int(time.time()) + 8 * 24 * 60 * 60
return cls(
access_token=access_token,
refresh_token=refresh_token,
id_token=id_token,
account_id=account_id,
email=email,
expires_at=expires_at,
fedramp=auth_claims.get("chatgpt_account_is_fedramp") is True,
)
@classmethod
def from_json(cls, payload: Any) -> _Credentials:
if not isinstance(payload, dict):
raise ValueError("credential document must be an object")
required = ("access_token", "refresh_token", "id_token", "account_id")
values = {key: payload.get(key) for key in required}
if not all(isinstance(value, str) and value for value in values.values()):
raise ValueError("credential document is missing a token field")
expires_at = payload.get("expires_at")
if not isinstance(expires_at, int) or isinstance(expires_at, bool):
raise ValueError("credential document is missing expires_at")
id_claims = _jwt_claims(values["id_token"])
profile = _mapping_claim(id_claims, "https://api.openai.com/profile")
email = _string_claim(id_claims, "email") or _string_claim(profile, "email")
return cls(
access_token=values["access_token"],
refresh_token=values["refresh_token"],
id_token=values["id_token"],
account_id=values["account_id"],
email=email if isinstance(email, str) else None,
expires_at=expires_at,
fedramp=payload.get("fedramp") is True,
)
def as_json(self) -> dict[str, Any]:
return {
"access_token": self.access_token,
"refresh_token": self.refresh_token,
"id_token": self.id_token,
"account_id": self.account_id,
"expires_at": self.expires_at,
"fedramp": self.fedramp,
}
class OpenAIAuthManager:
"""Own credentials, interactive login, refresh, and revocation."""
provider_id = "openai"
def __init__(
self,
*,
proxy: str = "",
credential_path: Path | None = None,
lock_path: Path | None = None,
client: httpx.AsyncClient | None = None,
) -> None:
self._credential_path = credential_path or openai_auth_path()
self._lock_path = lock_path or openai_auth_lock_path()
self._client = client or httpx.AsyncClient(
proxy=proxy or None,
timeout=httpx.Timeout(30.0),
headers={"originator": OPENAI_CODEX_ORIGINATOR},
)
self._owns_client = client is None
self._credentials: _Credentials | None = None
self._revision = 0
self._operation_lock = asyncio.Lock()
self._state_lock = asyncio.Lock()
self._login_task: asyncio.Task[None] | None = None
self._browser_login: BrowserAuthorization | None = None
self._attempt_id: str | None = None
self._mode: ConnectedAccountLoginMode | None = None
self._authorization_url: str | None = None
self._verification_url: str | None = None
self._user_code: str | None = None
self._expires_at: int | None = None
self._last_error: str | None = None
self._closed = False
try:
self._credentials = self._read_credentials()
except ValueError:
self._last_error = (
"Saved OpenAI credentials are invalid. Disconnect and sign in again."
)
if self._credentials is not None:
self._revision = 1
def is_connected(self) -> bool:
"""Return whether renewable credentials are present."""
return self._credentials is not None
def connected_provider_ids(self) -> tuple[str, ...]:
"""Return the provider availability contributed by this manager."""
return (self.provider_id,) if self.is_connected() else ()
def status(self) -> ConnectedAccountStatus:
"""Return a credential-free snapshot."""
credentials = self._credentials
connecting = self._login_task is not None and not self._login_task.done()
if connecting:
state = ConnectedAccountState.CONNECTING
elif self._last_error:
state = ConnectedAccountState.ERROR
elif credentials is not None:
state = ConnectedAccountState.CONNECTED
else:
state = ConnectedAccountState.DISCONNECTED
return ConnectedAccountStatus(
provider_id=self.provider_id,
state=state,
connected=credentials is not None,
revision=self._revision,
attempt_id=self._attempt_id if connecting else None,
email=credentials.email if credentials is not None else None,
mode=self._mode if connecting else None,
authorization_url=self._authorization_url if connecting else None,
verification_url=self._verification_url if connecting else None,
user_code=self._user_code if connecting else None,
expires_at=self._expires_at if connecting else None,
message=self._last_error,
)
async def start_login(
self, mode: ConnectedAccountLoginMode
) -> ConnectedAccountStatus:
"""Start browser PKCE or device authorization without exposing secrets."""
async with self._operation_lock:
async with self._state_lock:
self._ensure_open()
if self._login_task is not None and not self._login_task.done():
return self.status()
self._clear_attempt()
self._last_error = None
self._attempt_id = f"login_{uuid.uuid4().hex}"
self._mode = mode
browser: BrowserAuthorization | None = None
device = None
try:
if mode is ConnectedAccountLoginMode.BROWSER:
browser = await BrowserAuthorization.start()
else:
device = await request_device_authorization(self._client)
async with self._state_lock:
if browser is not None:
self._browser_login = browser
self._authorization_url = browser.auth_url
self._expires_at = int(time.time()) + 15 * 60
self._login_task = asyncio.create_task(
self._complete_browser_login(browser),
name="openai-browser-login",
)
else:
assert device is not None
self._verification_url = device.verification_url
self._user_code = device.user_code
self._expires_at = device.expires_at
self._login_task = asyncio.create_task(
self._complete_login(
wait_for_device_grant(self._client, device)
),
name="openai-device-login",
)
return self.status()
except asyncio.CancelledError:
if browser is not None:
with suppress(Exception):
await browser.close()
async with self._state_lock:
self._clear_attempt()
raise
except Exception:
if browser is not None:
with suppress(Exception):
await browser.close()
async with self._state_lock:
self._clear_attempt()
self._last_error = "OpenAI sign-in could not start."
raise
async def cancel_login(self) -> ConnectedAccountStatus:
"""Cancel a pending login while preserving current credentials."""
async with self._operation_lock:
async with self._state_lock:
login = self._detach_login_locked()
self._last_error = None
await self._close_detached_login(*login)
return self.status()
async def disconnect(self) -> ConnectedAccountStatus:
"""Best-effort revoke, then always remove FCC-owned credentials."""
async with self._operation_lock:
async with self._state_lock:
self._ensure_open()
login = self._detach_login_locked()
await self._close_detached_login(*login)
async with self._state_lock:
credentials = self._credentials
if credentials is not None:
with suppress(httpx.HTTPError):
await self._client.post(
OPENAI_REVOKE_URL,
json={
"client_id": OPENAI_OAUTH_CLIENT_ID,
"token": credentials.refresh_token,
"token_type_hint": "refresh_token",
},
)
await self._delete_credentials()
self._credentials = None
self._revision += 1
self._last_error = None
return self.status()
async def access(self, *, force_refresh: bool = False) -> OpenAIAccess:
"""Return current request headers, refreshing once before expiry."""
async with self._state_lock:
self._ensure_open()
credentials = self._credentials
if credentials is None:
raise OpenAIReconnectRequired(
"Connect an OpenAI ChatGPT account in the FCC Admin UI."
)
if force_refresh:
credentials = await self._refresh_locked(credentials)
elif credentials.expires_at <= int(time.time()) + REFRESH_EARLY_SECONDS:
try:
credentials = await self._refresh_locked(credentials)
except httpx.HTTPError as exc:
if not _is_transient_refresh_error(exc):
raise
return OpenAIAccess(
access_token=credentials.access_token,
account_id=credentials.account_id,
fedramp=credentials.fedramp,
)
async def recover_unauthorized(self, rejected_token: str) -> OpenAIAccess:
"""Reload cross-process state, then force at most one token refresh."""
async with self._state_lock:
current = self._credentials
reloaded = await asyncio.to_thread(self._read_credentials)
if reloaded is not None and (
current is None or reloaded.access_token != current.access_token
):
self._credentials = reloaded
current = reloaded
if current is None:
raise OpenAIReconnectRequired(
"OpenAI credentials are no longer available. Reconnect in Admin."
)
if current.access_token != rejected_token:
return OpenAIAccess(
current.access_token, current.account_id, current.fedramp
)
refreshed = await self._refresh_locked(current)
return OpenAIAccess(
refreshed.access_token, refreshed.account_id, refreshed.fedramp
)
async def close(self) -> None:
"""Cancel login resources and close the owned HTTP client."""
async with self._operation_lock:
async with self._state_lock:
if self._closed:
return
self._closed = True
login = self._detach_login_locked()
await self._close_detached_login(*login)
if self._owns_client:
await self._client.aclose()
async def _complete_browser_login(self, browser: BrowserAuthorization) -> None:
try:
await self._complete_login(browser.wait())
finally:
await browser.close()
async def _complete_login(
self, grant_awaitable: Awaitable[AuthorizationGrant]
) -> None:
try:
grant = await grant_awaitable
credentials = await self._exchange_code(grant)
await self._write_credentials(credentials)
except asyncio.CancelledError:
raise
except Exception:
async with self._state_lock:
self._last_error = (
"OpenAI sign-in failed. Retry or use the device-code option."
)
else:
async with self._state_lock:
self._credentials = credentials
self._revision += 1
self._last_error = None
finally:
async with self._state_lock:
if self._login_task is asyncio.current_task():
self._login_task = None
self._browser_login = None
self._clear_attempt()
async def _exchange_code(self, grant: AuthorizationGrant) -> _Credentials:
response = await self._client.post(
OPENAI_TOKEN_URL,
data={
"grant_type": "authorization_code",
"client_id": OPENAI_OAUTH_CLIENT_ID,
"code": grant.code,
"redirect_uri": grant.redirect_uri,
"code_verifier": grant.code_verifier,
},
)
response.raise_for_status()
payload = response.json()
return _credentials_from_token_response(payload)
async def _refresh_locked(self, current: _Credentials) -> _Credentials:
file_lock = InterprocessFileLock(self._lock_path)
acquired = await asyncio.to_thread(file_lock.acquire, wait=True, timeout=30.0)
if not acquired:
raise OpenAIReconnectRequired(
"Timed out waiting for another FCC process to refresh OpenAI."
)
try:
reloaded = await asyncio.to_thread(self._read_credentials)
if reloaded is not None and (
reloaded != current
and reloaded.expires_at > int(time.time()) + REFRESH_EARLY_SECONDS
):
self._credentials = reloaded
return reloaded
response = await self._client.post(
OPENAI_TOKEN_URL,
json={
"grant_type": "refresh_token",
"client_id": OPENAI_OAUTH_CLIENT_ID,
"refresh_token": current.refresh_token,
},
)
if response.status_code in {400, 401, 403}:
await asyncio.to_thread(self._delete_credentials_unlocked)
self._credentials = None
self._revision += 1
self._last_error = (
"OpenAI sign-in expired. Reconnect the account in Admin."
)
raise OpenAIReconnectRequired(self._last_error)
response.raise_for_status()
payload = response.json()
refreshed = _credentials_from_token_response(payload, previous=current)
await asyncio.to_thread(self._write_credentials_unlocked, refreshed)
self._credentials = refreshed
self._revision += 1
return refreshed
finally:
await asyncio.to_thread(file_lock.release)
async def _write_credentials(self, credentials: _Credentials) -> None:
file_lock = InterprocessFileLock(self._lock_path)
acquired = await asyncio.to_thread(file_lock.acquire, wait=True, timeout=30.0)
if not acquired:
raise OpenAILoginError("Could not lock the OpenAI credential file.")
try:
await asyncio.to_thread(self._write_credentials_unlocked, credentials)
finally:
await asyncio.to_thread(file_lock.release)
def _write_credentials_unlocked(self, credentials: _Credentials) -> None:
path = self._credential_path
path.parent.mkdir(parents=True, exist_ok=True, mode=0o700)
if os.name != "nt":
os.chmod(path.parent, 0o700)
temporary = path.with_name(f".{path.name}.{uuid.uuid4().hex}.tmp")
try:
temporary.write_text(
json.dumps(
{"version": 1, "credentials": credentials.as_json()},
indent=2,
),
encoding="utf-8",
)
os.chmod(temporary, 0o600)
os.replace(temporary, path)
os.chmod(path, 0o600)
finally:
temporary.unlink(missing_ok=True)
async def _delete_credentials(self) -> None:
file_lock = InterprocessFileLock(self._lock_path)
acquired = await asyncio.to_thread(file_lock.acquire, wait=True, timeout=30.0)
if not acquired:
raise OpenAIReconnectRequired("Could not lock the OpenAI credential file.")
try:
await asyncio.to_thread(self._delete_credentials_unlocked)
finally:
await asyncio.to_thread(file_lock.release)
def _delete_credentials_unlocked(self) -> None:
self._credential_path.unlink(missing_ok=True)
def _read_credentials(self) -> _Credentials | None:
if not self._credential_path.is_file():
return None
try:
payload = json.loads(self._credential_path.read_text(encoding="utf-8"))
if not isinstance(payload, dict) or payload.get("version") != 1:
raise ValueError("credential document has an unsupported schema")
return _Credentials.from_json(payload.get("credentials"))
except (OSError, json.JSONDecodeError, OpenAILoginError, ValueError) as exc:
raise ValueError("OpenAI credential file is invalid") from exc
def _detach_login_locked(
self,
) -> tuple[asyncio.Task[None] | None, BrowserAuthorization | None]:
task = self._login_task
browser = self._browser_login
self._login_task = None
self._browser_login = None
self._clear_attempt()
return task, browser
@staticmethod
async def _close_detached_login(
task: asyncio.Task[None] | None,
browser: BrowserAuthorization | None,
) -> None:
if task is not None and not task.done():
task.cancel()
if task is not None:
await asyncio.gather(task, return_exceptions=True)
if browser is not None:
await browser.close()
def _clear_attempt(self) -> None:
self._attempt_id = None
self._mode = None
self._authorization_url = None
self._verification_url = None
self._user_code = None
self._expires_at = None
def _ensure_open(self) -> None:
if self._closed:
raise OpenAIReconnectRequired("OpenAI authentication is shutting down.")
def _credentials_from_token_response(
payload: Any,
*,
previous: _Credentials | None = None,
) -> _Credentials:
if not isinstance(payload, dict):
raise OpenAILoginError("OpenAI returned an invalid token response.")
access_token = payload.get("access_token")
refresh_token = payload.get("refresh_token")
id_token = payload.get("id_token")
if previous is not None:
access_token = access_token or previous.access_token
refresh_token = refresh_token or previous.refresh_token
id_token = id_token or previous.id_token
if not all(
isinstance(value, str) and value
for value in (access_token, refresh_token, id_token)
):
raise OpenAILoginError("OpenAI token response is missing credentials.")
return _Credentials.from_tokens(
access_token=access_token,
refresh_token=refresh_token,
id_token=id_token,
)
def _jwt_claims(token: str) -> dict[str, Any]:
try:
encoded = token.split(".")[1]
encoded += "=" * (-len(encoded) % 4)
payload = json.loads(base64.urlsafe_b64decode(encoded))
except (IndexError, ValueError, json.JSONDecodeError) as exc:
raise OpenAILoginError("OpenAI returned an invalid identity token.") from exc
if not isinstance(payload, dict):
raise OpenAILoginError("OpenAI returned invalid identity claims.")
return payload
def _optional_jwt_claims(token: str) -> dict[str, Any]:
try:
return _jwt_claims(token)
except OpenAILoginError:
return {}
def _mapping_claim(payload: dict[str, Any], key: str) -> dict[str, Any]:
value = payload.get(key)
return value if isinstance(value, dict) else {}
def _string_claim(payload: dict[str, Any], key: str) -> str | None:
value = payload.get(key)
return value if isinstance(value, str) and value else None
def _integer_claim(payload: dict[str, Any], key: str) -> int | None:
value = payload.get(key)
return value if isinstance(value, int) else None
def _is_transient_refresh_error(error: httpx.HTTPError) -> bool:
if isinstance(error, httpx.HTTPStatusError):
return error.response.status_code == 429 or error.response.status_code >= 500
return isinstance(error, httpx.TransportError)
|