use std::collections::{HashMap, VecDeque};
use std::io::{self, Read, Write};
use std::os::fd::AsRawFd;
use std::sync::atomic::{AtomicU64, Ordering};
use std::sync::{Arc, Mutex};
use std::thread;
use std::time::{Duration, Instant};
use rns_core::transport::types::{InterfaceId, InterfaceInfo};
use rns_crypto::ed25519::{Ed25519PrivateKey, Ed25519PublicKey};
use rns_crypto::sha256::sha256;
use rns_crypto::OsRng;
use super::{InterfaceConfigData, InterfaceFactory, StartContext, StartResult, Writer};
use crate::event::{DynamicInterfaceRegistration, Event, EventSender, InterfaceTelemetry};
use crate::serial::{Parity, SerialConfig, SerialPort};
pub const WDCL_T_DISCOVER: u8 = 0x00;
pub const WDCL_T_CONNECT: u8 = 0x01;
pub const WDCL_T_CMD: u8 = 0x02;
pub const WDCL_T_LOG: u8 = 0x03;
pub const WDCL_T_DISP: u8 = 0x04;
pub const WDCL_T_ENDPOINT_PKT: u8 = 0x05;
pub const WDCL_T_ENCAP_PROTO: u8 = 0x06;
pub const WDCL_BROADCAST: [u8; 4] = [0xff; 4];
pub const WDCL_CMD_ENDPOINT_PKT: u16 = 0x0001;
pub const WDCL_CMD_ENDPOINTS_LIST: u16 = 0x0100;
pub const WDCL_CMD_REMOTE_DISPLAY: u16 = 0x0a00;
pub const WDCL_CMD_REMOTE_INPUT: u16 = 0x0a01;
pub const ET_BOARD_INIT: u16 = 0x0003;
pub const ET_PROTO_WDCL_CONNECTION: u16 = 0x3002;
pub const ET_PROTO_WDCL_HOST_ENDPOINT: u16 = 0x3003;
pub const ET_PROTO_WEAVE_EP_ALIVE: u16 = 0x3102;
pub const ET_PROTO_WEAVE_EP_TIMEOUT: u16 = 0x3103;
pub const ET_PROTO_WEAVE_EP_VIA: u16 = 0x3104;
pub const ET_STAT_CPU: u16 = 0xe003;
pub const ET_STAT_MEMORY: u16 = 0xe005;
pub const WEAVE_HW_MTU: u32 = 1024;
pub const WEAVE_DEFAULT_BITRATE: u64 = 250_000;
pub const WEAVE_PEERING_TIMEOUT: f64 = 20.0;
pub const WEAVE_DUPLICATE_TTL: f64 = 0.75;
pub const WEAVE_DUPLICATE_CAPACITY: usize = 48;
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct WdclFrame {
pub destination: [u8; 4],
pub frame_type: u8,
pub payload: Vec<u8>,
}
impl WdclFrame {
pub fn encode(&self) -> Vec<u8> {
let mut output = Vec::with_capacity(5 + self.payload.len());
output.extend_from_slice(&self.destination);
output.push(self.frame_type);
output.extend_from_slice(&self.payload);
output
}
pub fn decode(data: &[u8]) -> Option<Self> {
if data.len() < 5 {
return None;
}
Some(Self {
destination: data[..4].try_into().ok()?,
frame_type: data[4],
payload: data[5..].to_vec(),
})
}
pub fn command(destination: [u8; 4], command: u16, data: &[u8]) -> Self {
let mut payload = Vec::with_capacity(2 + data.len());
payload.extend_from_slice(&command.to_be_bytes());
payload.extend_from_slice(data);
Self {
destination,
frame_type: WDCL_T_CMD,
payload,
}
}
pub fn endpoint_packet(destination: [u8; 4], endpoint: [u8; 8], packet: &[u8]) -> Self {
let mut data = Vec::with_capacity(8 + packet.len());
data.extend_from_slice(&endpoint);
data.extend_from_slice(packet);
Self::command(destination, WDCL_CMD_ENDPOINT_PKT, &data)
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct WeaveLogFrame {
pub timestamp: f64,
pub level: u8,
pub event: u16,
pub data: Vec<u8>,
}
#[derive(Debug, Clone, PartialEq)]
pub enum WeaveInput {
Discovery {
switch_id: [u8; 4],
signing_key: [u8; 32],
},
EndpointPacket {
source: [u8; 8],
packet: Vec<u8>,
},
Log(WeaveLogFrame),
Display {
offset: usize,
total: usize,
fragment: Vec<u8>,
},
Unknown(WdclFrame),
}
pub fn parse_device_frame(data: &[u8], host_switch_id: [u8; 4]) -> Option<WeaveInput> {
let frame = WdclFrame::decode(data)?;
match frame.frame_type {
WDCL_T_DISCOVER if frame.payload.len() == 96 => {
let key: [u8; 32] = frame.payload[..32].try_into().ok()?;
let signature: [u8; 64] = frame.payload[32..].try_into().ok()?;
if !Ed25519PublicKey::from_bytes(&key)
.ok()?
.verify(&signature, &frame.destination)
{
return None;
}
Some(WeaveInput::Discovery {
switch_id: key[28..].try_into().ok()?,
signing_key: key,
})
}
WDCL_T_ENDPOINT_PKT if frame.destination == host_switch_id && frame.payload.len() > 8 => {
let split = frame.payload.len() - 8;
Some(WeaveInput::EndpointPacket {
source: frame.payload[split..].try_into().ok()?,
packet: frame.payload[..split].to_vec(),
})
}
WDCL_T_LOG if frame.payload.len() >= 9 => {
let data = &frame.payload[1..];
Some(WeaveInput::Log(WeaveLogFrame {
timestamp: u32::from_be_bytes(data[..4].try_into().ok()?) as f64 / 1000.0,
level: data[4],
event: u16::from_be_bytes(data[5..7].try_into().ok()?),
data: data[7..].to_vec(),
}))
}
WDCL_T_DISP if frame.payload.len() >= 9 => Some(WeaveInput::Display {
offset: u32::from_be_bytes(frame.payload[1..5].try_into().ok()?) as usize,
total: u32::from_be_bytes(frame.payload[5..9].try_into().ok()?) as usize,
fragment: frame.payload[9..].to_vec(),
}),
_ => Some(WeaveInput::Unknown(frame)),
}
}
#[derive(Debug, Clone)]
pub struct WeavePeerState {
pub endpoint_id: [u8; 8],
pub via_switch_id: Option<[u8; 4]>,
pub last_heard: f64,
}
#[derive(Debug, Clone, Default)]
pub struct WeaveState {
pub connected: bool,
pub switch_id: Option<[u8; 4]>,
pub endpoint_id: Option<[u8; 8]>,
pub cpu_load: Option<u8>,
pub mem_load: Option<f64>,
pub peers: HashMap<[u8; 8], WeavePeerState>,
pub logs: VecDeque<WeaveLogFrame>,
pub display: Vec<u8>,
pub unknown_events: VecDeque<WeaveLogFrame>,
duplicates: VecDeque<([u8; 32], f64)>,
}
impl WeaveState {
pub fn accept_packet(&mut self, packet: &[u8], now: f64) -> bool {
while self
.duplicates
.front()
.is_some_and(|entry| now >= entry.1 + WEAVE_DUPLICATE_TTL)
{
self.duplicates.pop_front();
}
let hash = sha256(packet);
if self.duplicates.iter().any(|entry| entry.0 == hash) {
return false;
}
if self.duplicates.len() == WEAVE_DUPLICATE_CAPACITY {
self.duplicates.pop_front();
}
self.duplicates.push_back((hash, now));
true
}
pub fn handle_log(&mut self, frame: WeaveLogFrame, now: f64) {
if self.logs.len() == 1024 {
self.logs.pop_front();
}
self.logs.push_back(frame.clone());
match frame.event {
ET_BOARD_INIT => {}
ET_PROTO_WDCL_CONNECTION => self.connected = true,
ET_PROTO_WDCL_HOST_ENDPOINT if frame.data.len() == 8 => {
self.endpoint_id = frame.data.as_slice().try_into().ok();
}
ET_PROTO_WEAVE_EP_ALIVE if frame.data.len() == 8 => {
let endpoint_id: [u8; 8] = frame.data.as_slice().try_into().unwrap();
self.peers
.entry(endpoint_id)
.and_modify(|peer| peer.last_heard = now)
.or_insert(WeavePeerState {
endpoint_id,
via_switch_id: None,
last_heard: now,
});
}
ET_PROTO_WEAVE_EP_TIMEOUT if frame.data.len() == 8 => {
if let Ok(endpoint) = <[u8; 8]>::try_from(frame.data.as_slice()) {
self.peers.remove(&endpoint);
}
}
ET_PROTO_WEAVE_EP_VIA if frame.data.len() == 12 => {
let endpoint: [u8; 8] = frame.data[..8].try_into().unwrap();
let via: [u8; 4] = frame.data[8..].try_into().unwrap();
if let Some(peer) = self.peers.get_mut(&endpoint) {
peer.via_switch_id = Some(via);
}
}
ET_STAT_CPU if !frame.data.is_empty() => self.cpu_load = Some(frame.data[0]),
ET_STAT_MEMORY if frame.data.len() == 8 => {
let free = u32::from_be_bytes(frame.data[..4].try_into().unwrap()) as f64;
let total = u32::from_be_bytes(frame.data[4..].try_into().unwrap()) as f64;
self.mem_load = (total > 0.0).then_some(((total - free) / total) * 100.0);
}
_ => self.unknown_events.push_back(frame),
}
}
pub fn expire_peers(&mut self, now: f64) -> Vec<[u8; 8]> {
let expired: Vec<_> = self
.peers
.iter()
.filter_map(|(id, peer)| {
(now >= peer.last_heard + WEAVE_PEERING_TIMEOUT).then_some(*id)
})
.collect();
for id in &expired {
self.peers.remove(id);
}
expired
}
pub fn apply_display(&mut self, offset: usize, total: usize, fragment: &[u8]) -> bool {
if total > 128 * 64 / 8 || offset > total || fragment.len() > total - offset {
return false;
}
self.display.resize(total, 0);
self.display[offset..offset + fragment.len()].copy_from_slice(fragment);
offset + fragment.len() == total
}
}
#[derive(Debug, Clone)]
pub struct WeaveConfig {
pub name: String,
pub port: String,
pub configured_bitrate: u64,
pub interface_id: InterfaceId,
pub state: Arc<Mutex<WeaveState>>,
}
struct WeaveSession {
config: WeaveConfig,
tx: EventSender,
next_dynamic_id: Arc<AtomicU64>,
mode: u8,
gravity: i64,
recursive_prs: bool,
announces_from_internal: bool,
announces_to_internal: Option<bool>,
ingress_control: rns_core::transport::types::IngressControlConfig,
ifac: Option<crate::ifac::IfacState>,
host_identity: Arc<Ed25519PrivateKey>,
host_public: [u8; 32],
host_switch_id: [u8; 4],
writer: Arc<Mutex<Option<std::fs::File>>>,
remote_switch_id: Arc<Mutex<Option<[u8; 4]>>>,
peer_interfaces: Arc<Mutex<HashMap<[u8; 8], InterfaceId>>>,
}
impl WeaveSession {
fn new(config: WeaveConfig, ctx: &StartContext) -> Arc<Self> {
let identity = Ed25519PrivateKey::generate(&mut OsRng);
let host_public = identity.public_key().public_bytes();
Arc::new(Self {
config,
tx: ctx.tx.clone(),
next_dynamic_id: Arc::clone(&ctx.next_dynamic_id),
mode: ctx.mode,
gravity: ctx.gravity,
recursive_prs: ctx.recursive_prs,
announces_from_internal: ctx.announces_from_internal,
announces_to_internal: ctx.announces_to_internal,
ingress_control: ctx.ingress_control,
ifac: ctx.ifac.clone(),
host_identity: Arc::new(identity),
host_public,
host_switch_id: host_public[28..].try_into().unwrap(),
writer: Arc::new(Mutex::new(None)),
remote_switch_id: Arc::new(Mutex::new(None)),
peer_interfaces: Arc::new(Mutex::new(HashMap::new())),
})
}
fn spawn(self: &Arc<Self>) -> io::Result<()> {
let session = Arc::clone(self);
thread::Builder::new()
.name(format!("weave-session-{}", self.config.interface_id.0))
.spawn(move || session.reconnect_loop())?;
Ok(())
}
fn reconnect_loop(self: Arc<Self>) {
loop {
if let Err(error) = self.run_connection() {
log::warn!(
"[{}] Weave connection failed: {}; retrying in five seconds",
self.config.name,
error
);
}
self.disconnect_all();
thread::sleep(Duration::from_secs(5));
}
}
fn run_connection(self: &Arc<Self>) -> io::Result<()> {
let port = SerialPort::open(&SerialConfig {
path: self.config.port.clone(),
baud: 3_000_000,
data_bits: 8,
parity: Parity::None,
stop_bits: 1,
})?;
let mut reader = port.reader()?;
*super::lock_or_recover(&self.writer, "weave writer") = Some(port.writer()?);
*super::lock_or_recover(&self.remote_switch_id, "weave remote switch") = None;
{
let mut state = super::lock_or_recover(&self.config.state, "weave state");
state.connected = false;
state.switch_id = None;
}
self.send_frame(&WdclFrame {
destination: WDCL_BROADCAST,
frame_type: WDCL_T_DISCOVER,
payload: self.host_switch_id.to_vec(),
})?;
let handshake_deadline = Instant::now() + Duration::from_secs(2);
let mut decoder = crate::hdlc::Decoder::with_limits(5, 128 * 1024);
let mut buffer = [0u8; 32 * 1024];
let mut last_peer_expiry = Instant::now();
loop {
let mut pollfd = libc::pollfd {
fd: reader.as_raw_fd(),
events: libc::POLLIN,
revents: 0,
};
let ready = unsafe { libc::poll(&mut pollfd, 1, 250) };
if ready < 0 {
return Err(io::Error::last_os_error());
}
if ready > 0 {
let read = reader.read(&mut buffer)?;
if read == 0 {
return Err(io::Error::new(
io::ErrorKind::UnexpectedEof,
"serial port closed",
));
}
for frame in decoder.feed(&buffer[..read]) {
self.process_frame(&frame)?;
}
}
let connected = super::lock_or_recover(&self.config.state, "weave state").connected;
if !connected && Instant::now() >= handshake_deadline {
return Err(io::Error::new(
io::ErrorKind::TimedOut,
"WDCL connection handshake timed out",
));
}
if last_peer_expiry.elapsed() >= Duration::from_secs(1) {
self.expire_peers(crate::time::now());
last_peer_expiry = Instant::now();
}
}
}
fn send_frame(&self, frame: &WdclFrame) -> io::Result<()> {
let encoded = crate::hdlc::frame(&frame.encode());
let mut writer = super::lock_or_recover(&self.writer, "weave writer");
writer
.as_mut()
.ok_or_else(|| io::Error::new(io::ErrorKind::NotConnected, "Weave is offline"))?
.write_all(&encoded)
}
fn process_frame(self: &Arc<Self>, raw: &[u8]) -> io::Result<()> {
let Some(input) = parse_device_frame(raw, self.host_switch_id) else {
return Ok(());
};
match input {
WeaveInput::Discovery {
switch_id,
signing_key: _,
} => {
*super::lock_or_recover(&self.remote_switch_id, "weave remote switch") =
Some(switch_id);
super::lock_or_recover(&self.config.state, "weave state").switch_id =
Some(switch_id);
let mut payload = self.host_public.to_vec();
payload.extend_from_slice(&self.host_identity.sign(&switch_id));
self.send_frame(&WdclFrame {
destination: switch_id,
frame_type: WDCL_T_CONNECT,
payload,
})?;
}
WeaveInput::EndpointPacket { source, packet } => {
let now = crate::time::now();
{
let mut state = super::lock_or_recover(&self.config.state, "weave state");
state
.peers
.entry(source)
.and_modify(|peer| peer.last_heard = now)
.or_insert(WeavePeerState {
endpoint_id: source,
via_switch_id: None,
last_heard: now,
});
if !state.accept_packet(&packet, now) {
return Ok(());
}
}
let interface_id = self.ensure_peer(source, now);
let _ = self.tx.send(Event::Frame {
interface_id,
data: packet,
rssi: None,
snr: None,
});
}
WeaveInput::Log(frame) => self.process_log(frame),
WeaveInput::Display {
offset,
total,
fragment,
} => {
super::lock_or_recover(&self.config.state, "weave state")
.apply_display(offset, total, &fragment);
}
WeaveInput::Unknown(_) => {}
}
Ok(())
}
fn process_log(self: &Arc<Self>, frame: WeaveLogFrame) {
let now = crate::time::now();
let event = frame.event;
let data = frame.data.clone();
super::lock_or_recover(&self.config.state, "weave state").handle_log(frame, now);
match event {
ET_PROTO_WDCL_CONNECTION => {
let _ = self
.tx
.send(Event::InterfaceUp(self.config.interface_id, None, None));
self.publish_parent_telemetry();
}
ET_PROTO_WEAVE_EP_ALIVE if data.len() == 8 => {
let endpoint: [u8; 8] = data.as_slice().try_into().unwrap();
self.ensure_peer(endpoint, now);
}
ET_PROTO_WEAVE_EP_TIMEOUT if data.len() == 8 => {
let endpoint: [u8; 8] = data.as_slice().try_into().unwrap();
self.remove_peer(endpoint);
}
ET_PROTO_WEAVE_EP_VIA if data.len() == 12 => {
let endpoint: [u8; 8] = data[..8].try_into().unwrap();
let via: [u8; 4] = data[8..].try_into().unwrap();
if let Some(interface_id) =
super::lock_or_recover(&self.peer_interfaces, "weave peer interfaces")
.get(&endpoint)
.copied()
{
let _ = self.tx.send(Event::InterfaceTelemetry {
interface_id,
telemetry: InterfaceTelemetry {
via_switch_id: Some(via),
..Default::default()
},
});
}
}
ET_PROTO_WDCL_HOST_ENDPOINT | ET_STAT_CPU | ET_STAT_MEMORY => {
self.publish_parent_telemetry()
}
_ => {}
}
}
fn ensure_peer(self: &Arc<Self>, endpoint: [u8; 8], now: f64) -> InterfaceId {
if let Some(id) = super::lock_or_recover(&self.peer_interfaces, "weave peers")
.get(&endpoint)
.copied()
{
return id;
}
let id = InterfaceId(self.next_dynamic_id.fetch_add(1, Ordering::Relaxed));
super::lock_or_recover(&self.peer_interfaces, "weave peers").insert(endpoint, id);
let via_switch_id = super::lock_or_recover(&self.config.state, "weave state")
.peers
.get(&endpoint)
.and_then(|peer| peer.via_switch_id);
let name = format!("WeaveInterfacePeer[{}]", hex(&endpoint));
let info = InterfaceInfo {
id,
name,
mode: self.mode,
gravity: self.gravity,
recursive_prs: self.recursive_prs,
announces_from_internal: self.announces_from_internal,
announces_to_internal: self.announces_to_internal,
out_capable: true,
in_capable: true,
bitrate: Some(self.config.configured_bitrate),
airtime_profile: None,
announce_rate_target: None,
announce_rate_grace: 0,
announce_rate_penalty: 0.0,
announce_cap: rns_core::constants::ANNOUNCE_CAP,
is_local_client: false,
wants_tunnel: false,
tunnel_id: None,
mtu: WEAVE_HW_MTU,
ia_freq: 0.0,
ip_freq: 0.0,
op_freq: 0.0,
op_samples: 0,
started: now,
ingress_control: self.ingress_control,
};
let _ = self.tx.send(Event::DynamicInterfaceUp {
id,
writer: Box::new(WeavePeerWriter {
session: Arc::clone(self),
endpoint,
}),
registration: Box::new(DynamicInterfaceRegistration {
info,
interface_type: "WeaveInterfacePeer".into(),
parent_id: self.config.interface_id,
telemetry: InterfaceTelemetry {
via_switch_id,
..Default::default()
},
ifac: self.ifac.clone(),
}),
});
self.publish_parent_telemetry();
id
}
fn remove_peer(&self, endpoint: [u8; 8]) {
if let Some(id) =
super::lock_or_recover(&self.peer_interfaces, "weave peers").remove(&endpoint)
{
super::lock_or_recover(&self.config.state, "weave state")
.peers
.remove(&endpoint);
let _ = self.tx.send(Event::InterfaceDown(id));
self.publish_parent_telemetry();
}
}
fn expire_peers(&self, now: f64) {
let expired = super::lock_or_recover(&self.config.state, "weave state").expire_peers(now);
for endpoint in &expired {
if let Some(id) =
super::lock_or_recover(&self.peer_interfaces, "weave peers").remove(endpoint)
{
let _ = self.tx.send(Event::InterfaceDown(id));
}
}
if !super::lock_or_recover(&self.peer_interfaces, "weave peers").is_empty()
|| !expired.is_empty()
{
self.publish_parent_telemetry();
}
}
fn publish_parent_telemetry(&self) {
let state = super::lock_or_recover(&self.config.state, "weave state");
let _ = self.tx.send(Event::InterfaceTelemetry {
interface_id: self.config.interface_id,
telemetry: InterfaceTelemetry {
cpu_load: state.cpu_load.map(f64::from),
mem_load: state.mem_load,
switch_id: state.switch_id,
endpoint_id: state.endpoint_id,
via_switch_id: None,
peers: Some(state.peers.len()),
},
});
}
fn disconnect_all(&self) {
*super::lock_or_recover(&self.writer, "weave writer") = None;
*super::lock_or_recover(&self.remote_switch_id, "weave remote switch") = None;
{
let mut state = super::lock_or_recover(&self.config.state, "weave state");
state.connected = false;
state.switch_id = None;
state.peers.clear();
}
let peers: Vec<_> = super::lock_or_recover(&self.peer_interfaces, "weave peers")
.drain()
.map(|(_, id)| id)
.collect();
for id in peers {
let _ = self.tx.send(Event::InterfaceDown(id));
}
let _ = self.tx.send(Event::InterfaceDown(self.config.interface_id));
self.publish_parent_telemetry();
}
}
struct WeavePeerWriter {
session: Arc<WeaveSession>,
endpoint: [u8; 8],
}
impl Writer for WeavePeerWriter {
fn send_frame(&mut self, data: &[u8]) -> io::Result<()> {
let remote = super::lock_or_recover(&self.session.remote_switch_id, "weave remote switch")
.ok_or_else(|| io::Error::new(io::ErrorKind::NotConnected, "Weave is offline"))?;
self.session
.send_frame(&WdclFrame::endpoint_packet(remote, self.endpoint, data))
}
}
fn hex(bytes: &[u8]) -> String {
bytes.iter().map(|byte| format!("{byte:02x}")).collect()
}
pub struct WeaveFactory;
struct ParentWriter;
impl Writer for ParentWriter {
fn send_frame_confirmed(&mut self, _data: &[u8]) -> io::Result<()> {
Err(io::Error::new(
io::ErrorKind::Unsupported,
"Weave parent is not a transmitting peer",
))
}
fn send_frame(&mut self, _data: &[u8]) -> io::Result<()> {
Ok(())
}
}
impl InterfaceFactory for WeaveFactory {
fn type_name(&self) -> &str {
"WeaveInterface"
}
fn default_ifac_size(&self) -> usize {
16
}
fn parse_config(
&self,
name: &str,
id: InterfaceId,
params: &HashMap<String, String>,
) -> Result<Box<dyn InterfaceConfigData>, String> {
let port = params
.get("port")
.cloned()
.ok_or_else(|| "WeaveInterface requires 'port'".to_string())?;
let configured_bitrate = params
.get("configured_bitrate")
.and_then(|v| v.parse().ok())
.unwrap_or(WEAVE_DEFAULT_BITRATE);
Ok(Box::new(WeaveConfig {
name: name.into(),
port,
configured_bitrate,
interface_id: id,
state: Arc::new(Mutex::new(WeaveState::default())),
}))
}
fn start(
&self,
config: Box<dyn InterfaceConfigData>,
ctx: StartContext,
) -> io::Result<StartResult> {
let config = *config
.into_any()
.downcast::<WeaveConfig>()
.map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "wrong Weave config type"))?;
let session = WeaveSession::new(config.clone(), &ctx);
session.spawn()?;
let info = InterfaceInfo {
id: config.interface_id,
name: config.name.clone(),
mode: ctx.mode,
gravity: ctx.gravity,
recursive_prs: ctx.recursive_prs,
announces_from_internal: ctx.announces_from_internal,
announces_to_internal: ctx.announces_to_internal,
out_capable: false,
in_capable: true,
bitrate: Some(config.configured_bitrate),
airtime_profile: None,
announce_rate_target: None,
announce_rate_grace: 0,
announce_rate_penalty: 0.0,
announce_cap: rns_core::constants::ANNOUNCE_CAP,
is_local_client: false,
wants_tunnel: false,
tunnel_id: None,
mtu: WEAVE_HW_MTU,
ia_freq: 0.0,
ip_freq: 0.0,
op_freq: 0.0,
op_samples: 0,
started: crate::time::now(),
ingress_control: ctx.ingress_control,
};
Ok(StartResult::Simple {
control: None,
id: config.interface_id,
info,
writer: Box::new(ParentWriter),
interface_type_name: "WeaveInterface".into(),
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use rns_crypto::ed25519::Ed25519PrivateKey;
use rns_crypto::FixedRng;
fn log_frame(host: [u8; 4], event: u16, data: &[u8]) -> Vec<u8> {
let mut payload = vec![0, 0, 0, 0, 1, 2];
payload.extend_from_slice(&event.to_be_bytes());
payload.extend_from_slice(data);
WdclFrame {
destination: host,
frame_type: WDCL_T_LOG,
payload,
}
.encode()
}
#[test]
fn wdcl_fragmented_hdlc_and_discovery_signature() {
let private = Ed25519PrivateKey::generate(&mut FixedRng::new(&[7; 64]));
let key = private.public_key().public_bytes();
let signed_id = [1, 2, 3, 4];
let mut payload = key.to_vec();
payload.extend_from_slice(&private.sign(&signed_id));
let frame = WdclFrame {
destination: signed_id,
frame_type: WDCL_T_DISCOVER,
payload,
}
.encode();
assert!(matches!(
parse_device_frame(&frame, [9; 4]),
Some(WeaveInput::Discovery { .. })
));
let wire = crate::hdlc::frame(&frame);
let mut decoder = crate::hdlc::Decoder::with_min_frame_size(5);
assert!(decoder.feed(&wire[..3]).is_empty());
assert_eq!(decoder.feed(&wire[3..]), vec![frame]);
}
#[test]
fn board_init_unknown_and_duplicate_state_are_preserved() {
let mut state = WeaveState::default();
state.handle_log(
WeaveLogFrame {
timestamp: 1.0,
level: 1,
event: ET_BOARD_INIT,
data: vec![1],
},
1.0,
);
state.handle_log(
WeaveLogFrame {
timestamp: 2.0,
level: 1,
event: 0x7777,
data: vec![2],
},
2.0,
);
assert_eq!(state.logs.len(), 2);
assert_eq!(state.unknown_events.len(), 1);
assert!(state.accept_packet(b"packet", 3.0));
assert!(!state.accept_packet(b"packet", 3.1));
assert!(state.accept_packet(b"packet", 4.0));
}
#[test]
fn simulated_session_authenticates_and_manages_endpoint_lifecycle() {
let (tx, rx) = crate::event::channel();
let config = WeaveConfig {
name: "weave-test".into(),
port: "/dev/null".into(),
configured_bitrate: WEAVE_DEFAULT_BITRATE,
interface_id: InterfaceId(55),
state: Arc::new(Mutex::new(WeaveState::default())),
};
let context = StartContext {
tx,
next_dynamic_id: Arc::new(AtomicU64::new(10_000)),
mode: rns_core::constants::MODE_GATEWAY,
gravity: 0,
recursive_prs: true,
announces_from_internal: false,
announces_to_internal: None,
ingress_control: rns_core::transport::types::IngressControlConfig::enabled(),
ifac: None,
underlay_mark: None,
};
let session = WeaveSession::new(config, &context);
*super::super::lock_or_recover(&session.writer, "test writer") =
Some(tempfile::tempfile().unwrap());
let remote = Ed25519PrivateKey::generate(&mut FixedRng::new(&[0x44; 64]));
let remote_public = remote.public_key().public_bytes();
let mut discovery_payload = remote_public.to_vec();
discovery_payload.extend_from_slice(&remote.sign(&session.host_switch_id));
session
.process_frame(
&WdclFrame {
destination: session.host_switch_id,
frame_type: WDCL_T_DISCOVER,
payload: discovery_payload,
}
.encode(),
)
.unwrap();
assert_eq!(
*super::super::lock_or_recover(&session.remote_switch_id, "test remote"),
Some(remote_public[28..].try_into().unwrap())
);
session
.process_frame(&log_frame(
session.host_switch_id,
ET_PROTO_WDCL_CONNECTION,
&[1],
))
.unwrap();
assert!(matches!(
rx.recv_timeout(Duration::from_secs(1)).unwrap(),
Event::InterfaceUp(InterfaceId(55), None, None)
));
let endpoint = [0x77; 8];
session
.process_frame(&log_frame(
session.host_switch_id,
ET_PROTO_WEAVE_EP_ALIVE,
&endpoint,
))
.unwrap();
let peer_id = loop {
if let Event::DynamicInterfaceUp {
id, registration, ..
} = rx.recv_timeout(Duration::from_secs(1)).unwrap()
{
assert_eq!(registration.interface_type, "WeaveInterfacePeer");
assert_eq!(registration.parent_id, InterfaceId(55));
break id;
}
};
let mut endpoint_payload = b"rns-packet".to_vec();
endpoint_payload.extend_from_slice(&endpoint);
let endpoint_frame = WdclFrame {
destination: session.host_switch_id,
frame_type: WDCL_T_ENDPOINT_PKT,
payload: endpoint_payload,
}
.encode();
session.process_frame(&endpoint_frame).unwrap();
assert!(loop {
if let Event::Frame {
interface_id, data, ..
} = rx.recv_timeout(Duration::from_secs(1)).unwrap()
{
break interface_id == peer_id && data == b"rns-packet";
}
});
session.process_frame(&endpoint_frame).unwrap();
assert!(rx.recv_timeout(Duration::from_millis(50)).is_err());
session.expire_peers(crate::time::now() + WEAVE_PEERING_TIMEOUT + 1.0);
assert!(loop {
if let Event::InterfaceDown(id) = rx.recv_timeout(Duration::from_secs(1)).unwrap() {
break id == peer_id;
}
});
}
}