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tsunagi/Cargo.toml
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tsunagiandClaude Opus 5 21be7e9b44 Separate control and data logically, move WireGuard into userspace, add a CLI
Corrects the architecture on two points raised in review, while the project
is still small enough to change cheaply.

1. Control and data are separated *logically*, not physically.

The old reading — "nothing but control may ride on iroh" — threw away iroh's
whole value and would have forced the data plane to reimplement STUN, ICE and
a relay. Now both planes ride on iroh with different ALPNs and different
connections, so the data plane inherits hole punching and relay fallback,
while proto/ still knows nothing about packets and dataplane/ knows nothing
about the control protocol.

New boundary: PacketTransport / PacketLink, an authenticated unreliable
datagram channel per (network, peer, protocol). tsunagi/data/1 runs the same
membership handshake, then DataOpen/DataOpenAck, then QUIC datagrams. Only
the smaller endpoint id dials, so exactly one link exists per pair.

A plugin is handed links and never learns reachability, so the WireGuard
announcement shrank to a public key: there is no address left to lie about.

2. WireGuard now runs in userspace, on boringtun's protocol state machine.

No kernel module, no wg tool, no ip shell-out, no loopback proxy: the wgtool,
backend and bridge modules are gone. Only creating a TUN device needs
privileges, and that sits behind TunFactory, so the entire data plane —
handshake, encryption, routing, address ownership — is tested with none.

Address ownership is enforced rather than believed: outbound packets go to
the owner of the destination address, inbound packets are dropped unless
their source is the address derived for the peer that sent them.

3. A `tsunagi` binary: secret, doctor, id, up. It owns the runtime, the
logging subscriber and Ctrl-C, which the library still refuses to.

Also fixes a reference cycle where IrohTransport held Arc<Inner>, which kept
the databases open and the directory lock held after shutdown; two storage
tests caught it once the cycle existed.

81 tests pass offline with no privileges, including real IPv6 packets
crossing a real WireGuard tunnel over real iroh connections. Verified by
hand: two CLI processes forming a mesh both on loopback and via n0 discovery
using only an endpoint id.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-21 11:55:20 +01:00

65 lines
2.1 KiB
TOML

[package]
name = "tsunagi"
version = "0.1.0"
edition = "2024"
rust-version = "1.91"
license = "MIT OR Apache-2.0"
description = "Proof-of-concept library for small private mesh networks: persistent agent identity, deterministic network spaces, iroh-based control plane."
repository = "https://github.com/tsunagi-net/tsunagi"
readme = "README.md"
keywords = ["mesh", "p2p", "iroh", "networking"]
categories = ["network-programming"]
[features]
default = ["cli"]
# The `tsunagi` command line binary. Library users can opt out.
cli = ["dep:clap", "dep:tracing-subscriber", "tokio/signal", "tun-device"]
# A real TUN device, so the WireGuard plugin can carry actual IP traffic.
# Needs CAP_NET_ADMIN at run time; without it the plugin still runs and its
# in-memory device can be used for tests.
tun-device = ["dep:tun"]
[[bin]]
name = "tsunagi"
path = "src/bin/tsunagi.rs"
required-features = ["cli"]
[dependencies]
clap = { version = "4.5", features = ["derive", "env"], optional = true }
tracing-subscriber = { version = "0.3", features = ["env-filter"], optional = true }
iroh = { version = "1.2", default-features = false, features = ["tls-ring"] }
tokio = { version = "1.53", features = ["rt", "rt-multi-thread", "sync", "time", "macros"] }
rusqlite = { version = "0.40", features = ["bundled"] }
hkdf = "0.13"
hmac = "0.13"
sha2 = "0.11"
subtle = "2.6"
zeroize = { version = "1.9", features = ["derive"] }
rand = "0.10"
serde = { version = "1.0", features = ["derive"] }
postcard = { version = "1.1", default-features = false, features = ["use-std"] }
data-encoding = "2.11"
hex = "0.4"
thiserror = "2.0"
tracing = "0.1"
fs4 = { version = "1.1", features = ["sync"] }
directories = "6.0"
netwatch = "0.19.3"
bytes = "1.12.1"
boringtun = { version = "0.7.1", default-features = false }
tun = { version = "0.8", features = ["async"], optional = true }
[dev-dependencies]
tokio = { version = "1.53", features = ["rt", "rt-multi-thread", "sync", "time", "macros", "process"] }
tempfile = "3.24"
tracing-subscriber = { version = "0.3", features = ["env-filter"] }
[lints.rust]
missing_docs = "warn"
unsafe_code = "forbid"
[lints.clippy]
unwrap_used = "warn"
expect_used = "warn"
panic = "warn"