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"""
The hub's API, as a member's client uses it.
The hub signs in, lists groups and the nodes serving them, mints the token a
node is shown, and relays the WebRTC offer. Nothing else: no listing, no file
and no byte of content passes through it (docs/MESHBAY_DESIGN.md §1.3, §8.4).
"""
import logging
import time
import httpx
from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PrivateKey
from .. import __version__
from ..errors import AUTH, NODE, NOT_FOUND, VERSION, CliError
from .keys import b64
log = logging.getLogger(__name__)
DEFAULT_HUB = "https://meshbay.org"
class HubError(Exception):
def __init__(self, status: int, detail: str):
super().__init__(f"{status}: {detail}")
self.status = status
self.detail = detail
def _version_tuple(v: str) -> tuple[int, ...]:
out = []
for part in v.split("."):
digits = "".join(c for c in part if c.isdigit())
out.append(int(digits or 0))
return tuple(out)
class Hub:
def __init__(self, url: str):
self.url = url.rstrip("/")
self._http = httpx.AsyncClient(
base_url=self.url, timeout=30,
headers={"User-Agent": f"meshbay-cli/{__version__}"})
async def aclose(self) -> None:
await self._http.aclose()
async def _call(self, method: str, path: str, *, token: str | None = None,
json: dict | None = None) -> dict:
headers = {"Authorization": f"Bearer {token}"} if token else {}
try:
r = await self._http.request(method, path, json=json, headers=headers)
except httpx.HTTPError as e:
raise CliError(NODE, f"Cannot reach the hub at {self.url}: {e}") from e
if r.status_code >= 400:
try:
detail = r.json().get("detail", r.text)
except Exception:
detail = r.text
raise HubError(r.status_code, str(detail))
return r.json() if r.content else {}
# ── Version ──────────────────────────────────────────────────────────────
async def check_version(self) -> str | None:
"""Refuse a client below the hub's minimum. Returns a notice, or None."""
try:
info = await self._call("GET", "/v1/hub/version")
except HubError as e:
raise CliError(NODE, f"{self.url} does not answer as a MeshBay hub "
f"({e.status})") from e
client = info.get("client") or {}
mine = _version_tuple(__version__)
minimum = client.get("minimum")
if minimum and mine < _version_tuple(minimum):
raise CliError(VERSION, f"This hub needs meshbay-cli {minimum} or later; "
f"this is {__version__}.")
recommended = client.get("recommended")
if recommended and mine < _version_tuple(recommended):
return f"meshbay-cli {recommended} is available; this is {__version__}."
return None
# ── Signing in ───────────────────────────────────────────────────────────
async def login(self, username: str, auth_key: str,
known_browser: str | None) -> dict:
body = {"username": username, "auth_key": auth_key}
if known_browser:
body["known_browser"] = known_browser
try:
return await self._call("POST", "/v1/users/login", json=body)
except HubError as e:
raise _sign_in_refusal(e) from e
async def register_device(self, token: str, pk: str, label: str, auth_key: str) -> dict:
return await self._call("POST", "/v1/users/devices", token=token, json={
"pk_auth_ed25519": pk, "label": label[:64], "auth_key": auth_key})
async def delete_device(self, token: str, device_id: str) -> None:
await self._call("DELETE", f"/v1/users/devices/{device_id}", token=token)
async def device_auth(self, username: str, sk: Ed25519PrivateKey) -> dict:
ts = int(time.time())
sig = sk.sign(f"meshbay:user_auth:{username}:{ts}".encode())
try:
return await self._call("POST", "/v1/users/auth", json={
"username": username, "timestamp": ts, "signature": b64(sig)})
except HubError as e:
raise _sign_in_refusal(e) from e
async def refresh(self, refresh_token: str) -> dict:
return await self._call("POST", "/v1/users/token/refresh",
json={"refresh_token": refresh_token})
async def logout(self, refresh_token: str) -> None:
await self._call("POST", "/v1/users/logout", json={"refresh_token": refresh_token})
async def me(self, token: str) -> dict:
return await self._call("GET", "/v1/users/me", token=token)
# ── Groups and nodes ─────────────────────────────────────────────────────
async def my_groups(self, token: str) -> list[dict]:
return (await self._call("GET", "/v1/groups/mine", token=token))["groups"]
async def group_nodes(self, token: str, group_id: str) -> list[dict]:
try:
return (await self._call("GET", f"/v1/groups/{group_id}/nodes",
token=token))["nodes"]
except HubError as e:
if e.status in (403, 404):
raise CliError(NOT_FOUND, f"The hub refused the group: {e.detail}") from e
raise
async def mnp_token(self, token: str, node_pk: str, group_id: str) -> str:
"""A token for one node and one group, never the hub session (E10)."""
r = await self._call("POST", "/v1/nodes/mnp-token", token=token,
json={"node_pk": node_pk, "group_id": group_id})
return r["mnp_token"]
async def offer(self, token: str, node_id: str, sdp: str) -> str:
try:
r = await self._call("POST", f"/v1/nodes/{node_id}/webrtc/offer", token=token,
json={"sdp": sdp, "ice_candidates": []})
except HubError as e:
raise CliError(NODE, f"The node did not answer the offer: {e.detail}") from e
return r["sdp"]
def _sign_in_refusal(e: HubError) -> CliError:
if e.status == 401:
return CliError(AUTH, "Sign-in refused: wrong username or passphrase.")
if e.status == 403 and e.detail == "email_verification_required":
return CliError(AUTH, "This account's e-mail address is not verified yet.")
if e.status == 403:
return CliError(AUTH, f"Sign-in refused: {e.detail}.")
if e.status == 429:
return CliError(AUTH, f"Too many attempts: {e.detail}")
return CliError(AUTH, f"Sign-in failed ({e.status}): {e.detail}")
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