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"""
MeshBay Node configuration.
Config file: ~/.config/meshbay/node.toml
All values have sensible defaults and can be overridden by env vars
prefixed with MESHBAY_ (e.g. MESHBAY_HUB_URL).
"""
import logging
import os
from dataclasses import dataclass, field
from pathlib import Path
try:
import tomllib # Python 3.11+
except ImportError:
import tomli as tomllib # type: ignore[no-redef]
log = logging.getLogger(__name__)
DEFAULT_CONFIG_PATH = Path.home() / ".config" / "meshbay" / "node.toml"
EXAMPLE_CONFIG = """\
# MeshBay Node configuration — multi-group example
# See: https://meshbay.org/docs/node-config
[hub]
url = "https://meshbay.org"
username = "myusername"
[node]
quic_port = 19010 # QUIC (MNP) — LAN, port-forwarded, hub-less direct access
ui_port = 18000 # local admin UI (127.0.0.1 only)
# One-time codes. An invitation waits for someone to read their messages; an
# operator pairing code is typed during the SSH session that printed it.
invite_ttl_hours = 168 # 7 days
pair_ttl_hours = 24
# Browser and native clients reach this node over WebRTC DataChannel via hub
# signaling — no inbound port to open. QUIC is the optional direct path.
# Multiple groups — each with its own directory
[[groups]]
id = "" # set after joining
name = "My Media"
shared_dir = "/home/user/Media"
quic_port = 19010
[[groups]]
id = ""
name = "Public Archive"
shared_dir = "/home/user/Archive"
quic_port = 19012
visibility = "public" # discoverable on the hub
# join_policy = "open" # anyone the hub says is a member gets the group key,
# with no pairing code. Only for groups where that is
# genuinely intended: it means the hub can join too.
[keystore]
# unlock_file = "~/.config/meshbay/unlock.key"
# or set MESHBAY_UNLOCK_KEY env var
# Operator authority is not configured here. Run `meshbay-node operator pair` and
# enter the code in your browser: the node pins that browser's key, and invites
# and file deletion are signed with it.
"""
@dataclass
class HubConfig:
url: str = "https://meshbay.org"
username: str = ""
@dataclass
class NodeConfig:
quic_port: int = 19010
ui_port: int = 18000
# How long a one-time code stays usable. Invitations travel through a human
# conversation and are answered days later; operator pairing happens during
# the SSH session that printed it.
invite_ttl_hours: int = 168 # 7 days
pair_ttl_hours: int = 24
@dataclass
class GroupConfig:
id: str = ""
name: str = ""
shared_dir: str = ""
visibility: str = "private" # public|private — discoverability, not admission
# Admission. "invite" (default) means a newcomer needs a one-time pairing code
# before the node wraps the group key for them; "open" means the node pins
# whoever turns up first (TOFU) and serves them.
#
# Deliberately read from THIS file and never from the hub: a hub that could
# declare a group open would walk into any group it liked. Being findable
# (`visibility`) and being open (`join_policy`) are different questions.
join_policy: str = "invite" # invite|open
quic_port: int = 19010 # QUIC MNP port
@dataclass
class KeystoreConfig:
path: Path = field(default_factory=lambda: DEFAULT_CONFIG_PATH.parent / "keystore.enc")
unlock_file: Path | None = None
@dataclass
class Config:
hub: HubConfig = field(default_factory=HubConfig)
node: NodeConfig = field(default_factory=NodeConfig)
groups: list[GroupConfig] = field(default_factory=list)
keystore: KeystoreConfig = field(default_factory=KeystoreConfig)
data_dir: Path = field(default_factory=lambda: Path.home() / ".local" / "share" / "meshbay")
# Back-compat: single-group access
@property
def group(self) -> GroupConfig:
return self.groups[0] if self.groups else GroupConfig()
def load_config(path: Path = DEFAULT_CONFIG_PATH) -> Config:
"""
Load config from TOML file. Supports both single [group] and
multiple [[groups]] sections. Env vars override file values.
"""
cfg = Config()
if path.exists():
raw = tomllib.loads(path.read_text())
hub = raw.get("hub", {})
cfg.hub.url = hub.get("url", cfg.hub.url)
cfg.hub.username = hub.get("username", cfg.hub.username)
nd = raw.get("node", {})
# `port` (TCP+TLS) and `http_port` no longer exist — both listeners were removed
# in Phase 11.5 (findings C1, C6). Regenerate node.toml with `meshbay-node init`.
cfg.node.quic_port = nd.get("quic_port", cfg.node.quic_port)
cfg.node.ui_port = nd.get("ui_port", cfg.node.ui_port)
cfg.node.invite_ttl_hours = int(
nd.get("invite_ttl_hours", cfg.node.invite_ttl_hours))
cfg.node.pair_ttl_hours = int(
nd.get("pair_ttl_hours", cfg.node.pair_ttl_hours))
# Multi-group: [[groups]] array
if "groups" in raw:
for g in raw["groups"]:
cfg.groups.append(GroupConfig(
id=g.get("id", ""),
name=g.get("name", ""),
shared_dir=g.get("shared_dir", ""),
visibility=g.get("visibility", "private"),
join_policy=g.get("join_policy", "invite"),
quic_port=g.get("quic_port", cfg.node.quic_port),
))
# Back-compat: single [group] section
elif "group" in raw:
grp = raw["group"]
cfg.groups.append(GroupConfig(
id=grp.get("id", ""),
name=grp.get("name", ""),
))
if "data_dir" in raw:
cfg.data_dir = Path(raw["data_dir"]).expanduser().resolve()
if "admin_pk_ed25519" in raw:
# Removed, not merely unused: a key named here granted operator
# authority, and dropping it silently would refuse invites and file
# deletion with a signature error that looks like something else.
log.warning(
"admin_pk_ed25519 in %s is ignored — operator authority now comes "
"from the roster. Run `meshbay-node operator pair` and delete the "
"line.", path)
ks = raw.get("keystore", {})
if "path" in ks:
cfg.keystore.path = Path(ks["path"]).expanduser()
if "unlock_file" in ks:
cfg.keystore.unlock_file = Path(ks["unlock_file"]).expanduser()
# Env var overrides
if url := os.environ.get("MESHBAY_HUB_URL"):
cfg.hub.url = url
if user := os.environ.get("MESHBAY_USERNAME"):
cfg.hub.username = user
if port := os.environ.get("MESHBAY_QUIC_PORT"):
cfg.node.quic_port = int(port)
return cfg
def write_example_config(path: Path = DEFAULT_CONFIG_PATH) -> None:
"""Write an example config file if none exists."""
if not path.exists():
path.parent.mkdir(parents=True, exist_ok=True)
path.write_text(EXAMPLE_CONFIG)
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