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fix(dashboard): MiniMax 'Login' button launched Claude OAuth (#22832)

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Fixes #22832.

## Root cause

`hermes_cli/web_server.py:start_oauth_login` dispatched OAuth flows by
the catalog's `flow` field rather than provider id:

    if catalog_entry["flow"] == "pkce":
        return _start_anthropic_pkce()

The catalog had two `flow: "pkce"` entries — `anthropic` and
`minimax-oauth` — so clicking "Login" on MiniMax in the dashboard's
Keys tab unconditionally launched the Anthropic/Claude PKCE flow.

## Fix

Three changes in `hermes_cli/web_server.py`:

1. Catalog entry for `minimax-oauth` changed from `flow: "pkce"` to
   `flow: "device_code"`. From a UX perspective MiniMax is a
   verification-URI + user-code flow (open URL, enter code, backend
   polls) — same shape as Nous's device-code flow. The PKCE bit
   (verifier + challenge from `_minimax_pkce_pair`) is a security
   extension that doesn't change the operator experience; the existing
   dashboard modal already renders `device_code` correctly for this UX.

2. New MiniMax branch in `_start_device_code_flow`, mirroring the
   existing Nous branch but calling MiniMax-specific helpers
   (`_minimax_request_user_code`, `_minimax_pkce_pair`). Stashes
   verifier + state in the session for the poller to consume. Handles
   the overloaded `expired_in` field (could be unix-ms timestamp OR
   seconds-from-now duration) the same way `_minimax_poll_token` does.

3. New `_minimax_poller` background thread mirroring `_nous_poller`.
   Calls `_minimax_poll_token` → on success builds the same
   `auth_state` dict the CLI flow (`_minimax_oauth_login`) builds, and
   persists via `_minimax_save_auth_state` so the dashboard path leaves
   the system in the same state as `hermes auth add minimax-oauth`.

Plus a dispatcher tightening to prevent regression: the `pkce` branch
now requires `provider_id == "anthropic"`, so any future PKCE provider
added without a proper start function gets a clean
`400 Unsupported flow` rather than silently launching Anthropic OAuth.

## Test

New `tests/hermes_cli/test_web_oauth_dispatch.py`:

- Regression test asserting MiniMax start does NOT return claude.ai
- Sanity test that Anthropic PKCE still works after the dispatcher
  tightening
- Forward-looking test: a hypothetical pkce-flagged provider without
  an explicit branch is rejected cleanly rather than misrouted

## Limitations

- The dashboard MiniMax path defaults to `region="global"`. CN-region
  operators can still use the CLI flow which supports `--region cn`.
  Adding a region toggle to the dashboard UI is a follow-up.
This commit is contained in:
Ahmed Badr 2026-05-09 22:53:13 +01:00 • committed by Teknium
parent ea1d0462cf
commit 05bad7b1e7
2 changed files with 299 additions and 3 deletions
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173
hermes_cli/web_server.py
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@ -1456,7 +1456,12 @@ _OAUTH_PROVIDER_CATALOG: tuple[Dict[str, Any], ...] = (
{
"id": "minimax-oauth",
"name": "MiniMax (OAuth)",
"flow": "pkce",
# MiniMax's flow is structurally device-code (verification URI +
# user code, backend polls the token endpoint) with a PKCE
# extension for code-binding. The dashboard renders the same UX
# as Nous's device-code flow; the PKCE bit is a security
# extension that doesn't change the operator experience.
"flow": "device_code",
"cli_command": "hermes auth add minimax-oauth",
"docs_url": "https://www.minimax.io",
"status_fn": None, # dispatched via auth.get_minimax_oauth_auth_status
@ -1819,7 +1824,7 @@ def _submit_anthropic_pkce(session_id: str, code_input: str) -> Dict[str, Any]:
async def _start_device_code_flow(provider_id: str) -> Dict[str, Any]:
"""Initiate a device-code flow (Nous or OpenAI Codex).
"""Initiate a device-code flow (Nous, OpenAI Codex, or MiniMax).
Calls the provider's device-auth endpoint via the existing CLI helpers,
then spawns a background poller. Returns the user-facing display fields
@ -1898,6 +1903,82 @@ async def _start_device_code_flow(provider_id: str) -> Dict[str, Any]:
"poll_interval": int(s.get("interval") or 5),
}
if provider_id == "minimax-oauth":
# MiniMax uses a device-code-style flow (verification URI + user
# code + background poll) with a PKCE extension on top. From the
# operator's perspective it's identical to Nous's device-code
# flow; the PKCE bit (verifier + challenge from
# _minimax_pkce_pair) is a security extension that binds the
# token exchange to the original session.
from hermes_cli.auth import (
_minimax_pkce_pair,
_minimax_request_user_code,
MINIMAX_OAUTH_CLIENT_ID,
MINIMAX_OAUTH_GLOBAL_BASE,
)
import httpx
verifier, challenge, state = _minimax_pkce_pair()
portal_base_url = (
os.getenv("MINIMAX_PORTAL_BASE_URL") or MINIMAX_OAUTH_GLOBAL_BASE
).rstrip("/")
def _do_minimax_request():
with httpx.Client(
timeout=httpx.Timeout(15.0),
headers={"Accept": "application/json"},
follow_redirects=True,
) as client:
return _minimax_request_user_code(
client=client,
portal_base_url=portal_base_url,
client_id=MINIMAX_OAUTH_CLIENT_ID,
code_challenge=challenge,
state=state,
)
device_data = await asyncio.get_event_loop().run_in_executor(
None, _do_minimax_request
)
sid, sess = _new_oauth_session("minimax-oauth", "device_code")
# The CLI flow names this `interval_ms` because MiniMax's
# `interval` field is in milliseconds (defensive default 2000ms
# in _minimax_poll_token).
interval_raw = device_data.get("interval")
sess["interval_ms"] = (
int(interval_raw) if interval_raw is not None else None
)
sess["user_code"] = str(device_data["user_code"])
sess["code_verifier"] = verifier
sess["state"] = state
sess["portal_base_url"] = portal_base_url
sess["client_id"] = MINIMAX_OAUTH_CLIENT_ID
sess["region"] = "global"
# `expired_in` from MiniMax is overloaded — could be a unix-ms
# timestamp OR a seconds-from-now duration. Mirror the heuristic
# in _minimax_poll_token. Stash the raw value for the poller;
# compute a derived expires_at + UI-friendly expires_in seconds.
expired_in_raw = int(device_data["expired_in"])
sess["expired_in_raw"] = expired_in_raw
if expired_in_raw > 1_000_000_000_000: # likely unix-ms
expires_at_ts = expired_in_raw / 1000.0
expires_in_seconds = max(0, int(expires_at_ts - time.time()))
else:
expires_at_ts = time.time() + expired_in_raw
expires_in_seconds = expired_in_raw
sess["expires_at"] = expires_at_ts
threading.Thread(
target=_minimax_poller,
args=(sid,),
daemon=True,
name=f"oauth-poll-{sid[:6]}",
).start()
return {
"session_id": sid,
"flow": "device_code",
"user_code": str(device_data["user_code"]),
"verification_url": str(device_data["verification_uri"]),
"expires_in": expires_in_seconds,
"poll_interval": max(2, (sess["interval_ms"] or 2000) // 1000),
}
raise HTTPException(status_code=400, detail=f"Provider {provider_id} does not support device-code flow")
@ -1959,6 +2040,86 @@ def _nous_poller(session_id: str) -> None:
sess["error_message"] = str(e)
def _minimax_poller(session_id: str) -> None:
"""Background poller that drives a MiniMax OAuth flow to completion.
Mirrors `_nous_poller` but calls the MiniMax-specific token endpoint,
which uses a PKCE-style ``code_verifier`` + ``user_code`` rather than
the ``device_code`` field used by Nous. On success, builds the same
auth_state dict that ``_minimax_oauth_login`` (the CLI flow) builds
and persists via ``_minimax_save_auth_state`` — so the dashboard
path leaves the system in the same state as
``hermes auth add minimax-oauth``.
"""
from hermes_cli.auth import (
_minimax_poll_token,
_minimax_save_auth_state,
MINIMAX_OAUTH_GLOBAL_INFERENCE,
MINIMAX_OAUTH_SCOPE,
)
from datetime import datetime, timezone
import httpx
with _oauth_sessions_lock:
sess = _oauth_sessions.get(session_id)
if not sess:
return
portal_base_url = sess["portal_base_url"]
client_id = sess["client_id"]
user_code = sess["user_code"]
code_verifier = sess["code_verifier"]
interval_ms = sess.get("interval_ms")
expired_in_raw = sess["expired_in_raw"]
try:
with httpx.Client(
timeout=httpx.Timeout(15.0),
headers={"Accept": "application/json"},
follow_redirects=True,
) as client:
token_data = _minimax_poll_token(
client=client,
portal_base_url=portal_base_url,
client_id=client_id,
user_code=user_code,
code_verifier=code_verifier,
expired_in=expired_in_raw,
interval_ms=interval_ms,
)
# Build the auth_state dict in the same shape as the CLI flow's
# `_minimax_oauth_login` so `_minimax_save_auth_state` writes
# the canonical record. Region is fixed to "global" for the
# dashboard path; cn-region operators can still use the CLI
# flow which supports `--region cn`.
now = datetime.now(timezone.utc)
expires_in_s = int(token_data["expired_in"])
expires_at_ts = now.timestamp() + expires_in_s
auth_state = {
"provider": "minimax-oauth",
"region": sess.get("region", "global"),
"portal_base_url": portal_base_url,
"inference_base_url": MINIMAX_OAUTH_GLOBAL_INFERENCE,
"client_id": client_id,
"scope": MINIMAX_OAUTH_SCOPE,
"token_type": token_data.get("token_type", "Bearer"),
"access_token": token_data["access_token"],
"refresh_token": token_data["refresh_token"],
"resource_url": token_data.get("resource_url"),
"obtained_at": now.isoformat(),
"expires_at": datetime.fromtimestamp(
expires_at_ts, tz=timezone.utc
).isoformat(),
"expires_in": expires_in_s,
}
_minimax_save_auth_state(auth_state)
with _oauth_sessions_lock:
sess["status"] = "approved"
_log.info("oauth/device: minimax login completed (session=%s)", session_id)
except Exception as e:
_log.warning("minimax device-code poll failed (session=%s): %s", session_id, e)
with _oauth_sessions_lock:
sess["status"] = "error"
sess["error_message"] = str(e)
def _codex_full_login_worker(session_id: str) -> None:
"""Run the complete OpenAI Codex device-code flow.
@ -2111,7 +2272,13 @@ async def start_oauth_login(provider_id: str, request: Request):
detail=f"{provider_id} uses an external CLI; run `{catalog_entry['cli_command']}` manually",
)
try:
if catalog_entry["flow"] == "pkce":
# The pkce branch is gated on provider_id == "anthropic" because
# `_start_anthropic_pkce()` is hardcoded to the Anthropic flow.
# Routing any other future pkce-flagged provider through it would
# silently launch the Anthropic OAuth flow (the bug fixed in this
# change for MiniMax). New PKCE providers must add their own
# start function and an explicit branch here.
if catalog_entry["flow"] == "pkce" and provider_id == "anthropic":
return _start_anthropic_pkce()
if catalog_entry["flow"] == "device_code":
return await _start_device_code_flow(provider_id)