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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 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]
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)
# 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"
[keystore]
# unlock_file = "~/.config/meshbay/unlock.key"
# or set MESHBAY_UNLOCK_KEY env var
# Node sovereignty: pin the operator's Ed25519 public key (base64, 32 bytes raw).
# Admin operations (file delete) require cryptographic proof of this key.
# Auto-pinned on first startup from the node operator's keystore.
# admin_pk_ed25519 = "base64-encoded-32-bytes"
"""
@dataclass
class HubConfig:
url: str = "https://meshbay.org"
username: str = ""
@dataclass
class NodeConfig:
quic_port: int = 19010
ui_port: int = 18000
@dataclass
class GroupConfig:
id: str = ""
name: str = ""
shared_dir: str = ""
visibility: str = "private" # public|private
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")
admin_pk_ed25519: str = "" # base64 raw Ed25519 public key pinned locally
# 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)
# 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"),
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:
cfg.admin_pk_ed25519 = raw["admin_pk_ed25519"]
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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