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-rw-r--r--p2p/src/backend.rs43
-rw-r--r--p2p/src/codec.rs (renamed from p2p/src/io_codec.rs)24
-rw-r--r--p2p/src/config.rs7
-rw-r--r--p2p/src/connection.rs2
-rw-r--r--p2p/src/connector.rs56
-rw-r--r--p2p/src/discovery/lookup.rs71
-rw-r--r--p2p/src/discovery/mod.rs30
-rw-r--r--p2p/src/discovery/refresh.rs4
-rw-r--r--p2p/src/error.rs18
-rw-r--r--p2p/src/lib.rs13
-rw-r--r--p2p/src/listener.rs65
-rw-r--r--p2p/src/message.rs2
-rw-r--r--p2p/src/monitor.rs4
-rw-r--r--p2p/src/peer/mod.rs23
-rw-r--r--p2p/src/peer/peer_id.rs17
-rw-r--r--p2p/src/peer_pool.rs46
-rw-r--r--p2p/src/protocol.rs7
-rw-r--r--p2p/src/protocols/ping.rs6
-rw-r--r--p2p/src/routing_table/entry.rs2
-rw-r--r--p2p/src/routing_table/mod.rs19
-rw-r--r--p2p/src/slots.rs2
-rw-r--r--p2p/src/tls_config.rs214
-rw-r--r--p2p/src/utils/mod.rs21
-rw-r--r--p2p/src/version.rs (renamed from p2p/src/utils/version.rs)0
24 files changed, 523 insertions, 173 deletions
diff --git a/p2p/src/backend.rs b/p2p/src/backend.rs
index 2e34f47..56d79f7 100644
--- a/p2p/src/backend.rs
+++ b/p2p/src/backend.rs
@@ -2,7 +2,7 @@ use std::sync::Arc;
use log::info;
-use karyons_core::{pubsub::Subscription, GlobalExecutor};
+use karyons_core::{key_pair::KeyPair, pubsub::Subscription, GlobalExecutor};
use crate::{
config::Config,
@@ -22,8 +22,8 @@ pub struct Backend {
/// The Configuration for the P2P network.
config: Arc<Config>,
- /// Peer ID.
- id: PeerID,
+ /// Identity Key pair
+ key_pair: KeyPair,
/// Responsible for network and system monitoring.
monitor: Arc<Monitor>,
@@ -37,17 +37,34 @@ pub struct Backend {
impl Backend {
/// Creates a new Backend.
- pub fn new(id: PeerID, config: Config, ex: GlobalExecutor) -> ArcBackend {
+ pub fn new(key_pair: &KeyPair, config: Config, ex: GlobalExecutor) -> ArcBackend {
let config = Arc::new(config);
let monitor = Arc::new(Monitor::new());
- let cq = ConnQueue::new();
-
- let peer_pool = PeerPool::new(&id, cq.clone(), config.clone(), monitor.clone(), ex.clone());
-
- let discovery = Discovery::new(&id, cq, config.clone(), monitor.clone(), ex);
+ let conn_queue = ConnQueue::new();
+
+ let peer_id = PeerID::try_from(key_pair.public())
+ .expect("Derive a peer id from the provided key pair.");
+ info!("PeerID: {}", peer_id);
+
+ let peer_pool = PeerPool::new(
+ &peer_id,
+ conn_queue.clone(),
+ config.clone(),
+ monitor.clone(),
+ ex.clone(),
+ );
+
+ let discovery = Discovery::new(
+ key_pair,
+ &peer_id,
+ conn_queue,
+ config.clone(),
+ monitor.clone(),
+ ex,
+ );
Arc::new(Self {
- id: id.clone(),
+ key_pair: key_pair.clone(),
monitor,
discovery,
config,
@@ -57,7 +74,6 @@ impl Backend {
/// Run the Backend, starting the PeerPool and Discovery instances.
pub async fn run(self: &Arc<Self>) -> Result<()> {
- info!("Run the backend {}", self.id);
self.peer_pool.start().await?;
self.discovery.start().await?;
Ok(())
@@ -81,6 +97,11 @@ impl Backend {
self.config.clone()
}
+ /// Returns the `KeyPair`.
+ pub async fn key_pair(&self) -> &KeyPair {
+ &self.key_pair
+ }
+
/// Returns the number of occupied inbound slots.
pub fn inbound_slots(&self) -> usize {
self.discovery.inbound_slots.load()
diff --git a/p2p/src/io_codec.rs b/p2p/src/codec.rs
index ea62666..e521824 100644
--- a/p2p/src/io_codec.rs
+++ b/p2p/src/codec.rs
@@ -3,8 +3,8 @@ use std::time::Duration;
use bincode::{Decode, Encode};
use karyons_core::{
- async_utils::timeout,
- utils::{decode, encode, encode_into_slice},
+ async_util::timeout,
+ util::{decode, encode, encode_into_slice},
};
use karyons_net::{Connection, NetError};
@@ -17,16 +17,16 @@ use crate::{
pub trait CodecMsg: Decode + Encode + std::fmt::Debug {}
impl<T: Encode + Decode + std::fmt::Debug> CodecMsg for T {}
-/// I/O codec working with generic network connections.
+/// A Codec working with generic network connections.
///
/// It is responsible for both decoding data received from the network and
/// encoding data before sending it.
-pub struct IOCodec {
+pub struct Codec {
conn: Box<dyn Connection>,
}
-impl IOCodec {
- /// Creates a new IOCodec.
+impl Codec {
+ /// Creates a new Codec.
pub fn new(conn: Box<dyn Connection>) -> Self {
Self { conn }
}
@@ -88,18 +88,6 @@ impl IOCodec {
.map_err(|_| NetError::Timeout)?
}
- /// Writes a message of type `T` with the given timeout.
- pub async fn write_timeout<T: CodecMsg>(
- &self,
- command: NetMsgCmd,
- msg: &T,
- duration: Duration,
- ) -> Result<()> {
- timeout(duration, self.write(command, msg))
- .await
- .map_err(|_| NetError::Timeout)?
- }
-
/// Reads the exact number of bytes required to fill `buf`.
async fn read_exact(&self, mut buf: &mut [u8]) -> Result<()> {
while !buf.is_empty() {
diff --git a/p2p/src/config.rs b/p2p/src/config.rs
index ebecbf0..2c5d5ec 100644
--- a/p2p/src/config.rs
+++ b/p2p/src/config.rs
@@ -1,6 +1,6 @@
use karyons_net::{Endpoint, Port};
-use crate::utils::Version;
+use crate::Version;
/// the Configuration for the P2P network.
pub struct Config {
@@ -71,6 +71,9 @@ pub struct Config {
/// The maximum number of retries for outbound connection establishment
/// during the refresh process.
pub refresh_connect_retries: usize,
+
+ /// Enables TLS for all connections.
+ pub enable_tls: bool,
}
impl Default for Config {
@@ -100,6 +103,8 @@ impl Default for Config {
refresh_interval: 1800,
refresh_response_timeout: 1,
refresh_connect_retries: 3,
+
+ enable_tls: false,
}
}
}
diff --git a/p2p/src/connection.rs b/p2p/src/connection.rs
index 8ec2617..e0a3bbd 100644
--- a/p2p/src/connection.rs
+++ b/p2p/src/connection.rs
@@ -2,7 +2,7 @@ use std::{collections::VecDeque, fmt, sync::Arc};
use smol::{channel::Sender, lock::Mutex};
-use karyons_core::async_utils::CondVar;
+use karyons_core::async_util::CondVar;
use karyons_net::Conn;
use crate::Result;
diff --git a/p2p/src/connector.rs b/p2p/src/connector.rs
index f41ab57..6fc5734 100644
--- a/p2p/src/connector.rs
+++ b/p2p/src/connector.rs
@@ -1,21 +1,28 @@
use std::{future::Future, sync::Arc};
-use log::{trace, warn};
+use log::{error, trace, warn};
use karyons_core::{
- async_utils::{Backoff, TaskGroup, TaskResult},
+ async_util::{Backoff, TaskGroup, TaskResult},
+ key_pair::KeyPair,
GlobalExecutor,
};
-use karyons_net::{dial, Conn, Endpoint, NetError};
+use karyons_net::{dial, tls, Conn, Endpoint, NetError};
use crate::{
monitor::{ConnEvent, Monitor},
slots::ConnectionSlots,
- Result,
+ tls_config::tls_client_config,
+ Error, PeerID, Result,
};
+static DNS_NAME: &str = "karyons.org";
+
/// Responsible for creating outbound connections with other peers.
pub struct Connector {
+ /// Identity Key pair
+ key_pair: KeyPair,
+
/// Managing spawned tasks.
task_group: TaskGroup<'static>,
@@ -26,6 +33,9 @@ pub struct Connector {
/// establishing a connection.
max_retries: usize,
+ /// Enables secure connection.
+ enable_tls: bool,
+
/// Responsible for network and system monitoring.
monitor: Arc<Monitor>,
}
@@ -33,16 +43,20 @@ pub struct Connector {
impl Connector {
/// Creates a new Connector
pub fn new(
+ key_pair: &KeyPair,
max_retries: usize,
connection_slots: Arc<ConnectionSlots>,
+ enable_tls: bool,
monitor: Arc<Monitor>,
ex: GlobalExecutor,
) -> Arc<Self> {
Arc::new(Self {
+ key_pair: key_pair.clone(),
+ max_retries,
task_group: TaskGroup::new(ex),
monitor,
connection_slots,
- max_retries,
+ enable_tls,
})
}
@@ -57,20 +71,23 @@ impl Connector {
/// `Conn` instance.
///
/// This method will block until it finds an available slot.
- pub async fn connect(&self, endpoint: &Endpoint) -> Result<Conn> {
+ pub async fn connect(&self, endpoint: &Endpoint, peer_id: &Option<PeerID>) -> Result<Conn> {
self.connection_slots.wait_for_slot().await;
self.connection_slots.add();
let mut retry = 0;
let backoff = Backoff::new(500, 2000);
while retry < self.max_retries {
- let conn_result = dial(endpoint).await;
-
- if let Ok(conn) = conn_result {
- self.monitor
- .notify(&ConnEvent::Connected(endpoint.clone()).into())
- .await;
- return Ok(conn);
+ match self.dial(endpoint, peer_id).await {
+ Ok(conn) => {
+ self.monitor
+ .notify(&ConnEvent::Connected(endpoint.clone()).into())
+ .await;
+ return Ok(conn);
+ }
+ Err(err) => {
+ error!("Failed to establish a connection to {endpoint}: {err}");
+ }
}
self.monitor
@@ -96,12 +113,13 @@ impl Connector {
pub async fn connect_with_cback<Fut>(
self: &Arc<Self>,
endpoint: &Endpoint,
+ peer_id: &Option<PeerID>,
callback: impl FnOnce(Conn) -> Fut + Send + 'static,
) -> Result<()>
where
Fut: Future<Output = Result<()>> + Send + 'static,
{
- let conn = self.connect(endpoint).await?;
+ let conn = self.connect(endpoint, peer_id).await?;
let selfc = self.clone();
let endpoint = endpoint.clone();
@@ -120,4 +138,14 @@ impl Connector {
Ok(())
}
+
+ async fn dial(&self, endpoint: &Endpoint, peer_id: &Option<PeerID>) -> Result<Conn> {
+ if self.enable_tls {
+ let tls_config = tls_client_config(&self.key_pair, peer_id.clone())?;
+ tls::dial(endpoint, tls_config, DNS_NAME).await
+ } else {
+ dial(endpoint).await
+ }
+ .map_err(Error::KaryonsNet)
+ }
}
diff --git a/p2p/src/discovery/lookup.rs b/p2p/src/discovery/lookup.rs
index 0138068..60d8635 100644
--- a/p2p/src/discovery/lookup.rs
+++ b/p2p/src/discovery/lookup.rs
@@ -5,13 +5,13 @@ use log::{error, trace};
use rand::{rngs::OsRng, seq::SliceRandom, RngCore};
use smol::lock::{Mutex, RwLock};
-use karyons_core::{async_utils::timeout, utils::decode, GlobalExecutor};
+use karyons_core::{async_util::timeout, key_pair::KeyPair, util::decode, GlobalExecutor};
use karyons_net::{Conn, Endpoint};
use crate::{
+ codec::Codec,
connector::Connector,
- io_codec::IOCodec,
listener::Listener,
message::{
get_msg_payload, FindPeerMsg, NetMsg, NetMsgCmd, PeerMsg, PeersMsg, PingMsg, PongMsg,
@@ -20,7 +20,7 @@ use crate::{
monitor::{ConnEvent, DiscoveryEvent, Monitor},
routing_table::RoutingTable,
slots::ConnectionSlots,
- utils::version_match,
+ version::version_match,
Config, Error, PeerID, Result,
};
@@ -55,6 +55,7 @@ pub struct LookupService {
impl LookupService {
/// Creates a new lookup service
pub fn new(
+ key_pair: &KeyPair,
id: &PeerID,
table: Arc<Mutex<RoutingTable>>,
config: Arc<Config>,
@@ -64,11 +65,19 @@ impl LookupService {
let inbound_slots = Arc::new(ConnectionSlots::new(config.lookup_inbound_slots));
let outbound_slots = Arc::new(ConnectionSlots::new(config.lookup_outbound_slots));
- let listener = Listener::new(inbound_slots.clone(), monitor.clone(), ex.clone());
+ let listener = Listener::new(
+ key_pair,
+ inbound_slots.clone(),
+ config.enable_tls,
+ monitor.clone(),
+ ex.clone(),
+ );
let connector = Connector::new(
+ key_pair,
config.lookup_connect_retries,
outbound_slots.clone(),
+ config.enable_tls,
monitor.clone(),
ex,
);
@@ -116,14 +125,17 @@ impl LookupService {
/// randomly generated peer ID. Upon receiving peers from the initial lookup,
/// it starts connecting to these received peers and sends them a FindPeer
/// message that contains our own peer ID.
- pub async fn start_lookup(&self, endpoint: &Endpoint) -> Result<()> {
+ pub async fn start_lookup(&self, endpoint: &Endpoint, peer_id: Option<PeerID>) -> Result<()> {
trace!("Lookup started {endpoint}");
self.monitor
.notify(&DiscoveryEvent::LookupStarted(endpoint.clone()).into())
.await;
let mut random_peers = vec![];
- if let Err(err) = self.random_lookup(endpoint, &mut random_peers).await {
+ if let Err(err) = self
+ .random_lookup(endpoint, peer_id, &mut random_peers)
+ .await
+ {
self.monitor
.notify(&DiscoveryEvent::LookupFailed(endpoint.clone()).into())
.await;
@@ -160,11 +172,14 @@ impl LookupService {
async fn random_lookup(
&self,
endpoint: &Endpoint,
+ peer_id: Option<PeerID>,
random_peers: &mut Vec<PeerMsg>,
) -> Result<()> {
for _ in 0..2 {
- let peer_id = PeerID::random();
- let peers = self.connect(&peer_id, endpoint.clone()).await?;
+ let random_peer_id = PeerID::random();
+ let peers = self
+ .connect(endpoint.clone(), peer_id.clone(), &random_peer_id)
+ .await?;
let table = self.table.lock().await;
for peer in peers {
@@ -187,7 +202,7 @@ impl LookupService {
let mut tasks = FuturesUnordered::new();
for peer in random_peers.choose_multiple(&mut OsRng, random_peers.len()) {
let endpoint = Endpoint::Tcp(peer.addr.clone(), peer.discovery_port);
- tasks.push(self.connect(&self.id, endpoint))
+ tasks.push(self.connect(endpoint, Some(peer.peer_id.clone()), &self.id))
}
while let Some(result) = tasks.next().await {
@@ -200,11 +215,17 @@ impl LookupService {
}
}
- /// Connects to the given endpoint
- async fn connect(&self, peer_id: &PeerID, endpoint: Endpoint) -> Result<Vec<PeerMsg>> {
- let conn = self.connector.connect(&endpoint).await?;
- let io_codec = IOCodec::new(conn);
- let result = self.handle_outbound(io_codec, peer_id).await;
+ /// Connects to the given endpoint and initiates a lookup process for the
+ /// provided peer ID.
+ async fn connect(
+ &self,
+ endpoint: Endpoint,
+ peer_id: Option<PeerID>,
+ target_peer_id: &PeerID,
+ ) -> Result<Vec<PeerMsg>> {
+ let conn = self.connector.connect(&endpoint, &peer_id).await?;
+ let io_codec = Codec::new(conn);
+ let result = self.handle_outbound(io_codec, target_peer_id).await;
self.monitor
.notify(&ConnEvent::Disconnected(endpoint).into())
@@ -215,12 +236,16 @@ impl LookupService {
}
/// Handles outbound connection
- async fn handle_outbound(&self, io_codec: IOCodec, peer_id: &PeerID) -> Result<Vec<PeerMsg>> {
+ async fn handle_outbound(
+ &self,
+ io_codec: Codec,
+ target_peer_id: &PeerID,
+ ) -> Result<Vec<PeerMsg>> {
trace!("Send Ping msg");
self.send_ping_msg(&io_codec).await?;
trace!("Send FindPeer msg");
- let peers = self.send_findpeer_msg(&io_codec, peer_id).await?;
+ let peers = self.send_findpeer_msg(&io_codec, target_peer_id).await?;
if peers.0.len() >= MAX_PEERS_IN_PEERSMSG {
return Err(Error::Lookup("Received too many peers in PeersMsg"));
@@ -260,7 +285,7 @@ impl LookupService {
/// Handles inbound connection
async fn handle_inbound(self: &Arc<Self>, conn: Conn) -> Result<()> {
- let io_codec = IOCodec::new(conn);
+ let io_codec = Codec::new(conn);
loop {
let msg: NetMsg = io_codec.read().await?;
trace!("Receive msg {:?}", msg.header.command);
@@ -293,7 +318,7 @@ impl LookupService {
}
/// Sends a Ping msg and wait to receive the Pong message.
- async fn send_ping_msg(&self, io_codec: &IOCodec) -> Result<()> {
+ async fn send_ping_msg(&self, io_codec: &Codec) -> Result<()> {
trace!("Send Pong msg");
let mut nonce: [u8; 32] = [0; 32];
@@ -319,14 +344,14 @@ impl LookupService {
}
/// Sends a Pong msg
- async fn send_pong_msg(&self, nonce: [u8; 32], io_codec: &IOCodec) -> Result<()> {
+ async fn send_pong_msg(&self, nonce: [u8; 32], io_codec: &Codec) -> Result<()> {
trace!("Send Pong msg");
io_codec.write(NetMsgCmd::Pong, &PongMsg(nonce)).await?;
Ok(())
}
/// Sends a FindPeer msg and wait to receivet the Peers msg.
- async fn send_findpeer_msg(&self, io_codec: &IOCodec, peer_id: &PeerID) -> Result<PeersMsg> {
+ async fn send_findpeer_msg(&self, io_codec: &Codec, peer_id: &PeerID) -> Result<PeersMsg> {
trace!("Send FindPeer msg");
io_codec
.write(NetMsgCmd::FindPeer, &FindPeerMsg(peer_id.clone()))
@@ -342,7 +367,7 @@ impl LookupService {
}
/// Sends a Peers msg.
- async fn send_peers_msg(&self, peer_id: &PeerID, io_codec: &IOCodec) -> Result<()> {
+ async fn send_peers_msg(&self, peer_id: &PeerID, io_codec: &Codec) -> Result<()> {
trace!("Send Peers msg");
let table = self.table.lock().await;
let entries = table.closest_entries(&peer_id.0, MAX_PEERS_IN_PEERSMSG);
@@ -354,7 +379,7 @@ impl LookupService {
}
/// Sends a Peer msg.
- async fn send_peer_msg(&self, io_codec: &IOCodec, endpoint: Endpoint) -> Result<()> {
+ async fn send_peer_msg(&self, io_codec: &Codec, endpoint: Endpoint) -> Result<()> {
trace!("Send Peer msg");
let peer_msg = PeerMsg {
addr: endpoint.addr()?.clone(),
@@ -367,7 +392,7 @@ impl LookupService {
}
/// Sends a Shutdown msg.
- async fn send_shutdown_msg(&self, io_codec: &IOCodec) -> Result<()> {
+ async fn send_shutdown_msg(&self, io_codec: &Codec) -> Result<()> {
trace!("Send Shutdown msg");
io_codec.write(NetMsgCmd::Shutdown, &ShutdownMsg(0)).await?;
Ok(())
diff --git a/p2p/src/discovery/mod.rs b/p2p/src/discovery/mod.rs
index 7f55309..2c1bcd8 100644
--- a/p2p/src/discovery/mod.rs
+++ b/p2p/src/discovery/mod.rs
@@ -8,7 +8,8 @@ use rand::{rngs::OsRng, seq::SliceRandom};
use smol::lock::Mutex;
use karyons_core::{
- async_utils::{Backoff, TaskGroup, TaskResult},
+ async_util::{Backoff, TaskGroup, TaskResult},
+ key_pair::KeyPair,
GlobalExecutor,
};
@@ -66,6 +67,7 @@ pub struct Discovery {
impl Discovery {
/// Creates a new Discovery
pub fn new(
+ key_pair: &KeyPair,
peer_id: &PeerID,
conn_queue: Arc<ConnQueue>,
config: Arc<Config>,
@@ -81,6 +83,7 @@ impl Discovery {
let refresh_service =
RefreshService::new(config.clone(), table.clone(), monitor.clone(), ex.clone());
let lookup_service = LookupService::new(
+ key_pair,
peer_id,
table.clone(),
config.clone(),
@@ -89,12 +92,21 @@ impl Discovery {
);
let connector = Connector::new(
+ key_pair,
config.max_connect_retries,
outbound_slots.clone(),
+ config.enable_tls,
+ monitor.clone(),
+ ex.clone(),
+ );
+
+ let listener = Listener::new(
+ key_pair,
+ inbound_slots.clone(),
+ config.enable_tls,
monitor.clone(),
ex.clone(),
);
- let listener = Listener::new(inbound_slots.clone(), monitor.clone(), ex.clone());
Arc::new(Self {
refresh_service: Arc::new(refresh_service),
@@ -222,7 +234,7 @@ impl Discovery {
selfc.update_entry(&pid, INCOMPATIBLE_ENTRY).await;
}
Err(Error::PeerAlreadyConnected) => {
- // TODO
+ // TODO: Use the appropriate status.
selfc.update_entry(&pid, DISCONNECTED_ENTRY).await;
}
Err(_) => {
@@ -236,10 +248,13 @@ impl Discovery {
Ok(())
};
- let res = self.connector.connect_with_cback(endpoint, cback).await;
+ let result = self
+ .connector
+ .connect_with_cback(endpoint, &pid, cback)
+ .await;
if let Some(pid) = &pid {
- match res {
+ match result {
Ok(_) => {
self.update_entry(pid, CONNECTED_ENTRY).await;
}
@@ -260,7 +275,8 @@ impl Discovery {
match self.random_entry(PENDING_ENTRY | CONNECTED_ENTRY).await {
Some(entry) => {
let endpoint = Endpoint::Tcp(entry.addr, entry.discovery_port);
- if let Err(err) = self.lookup_service.start_lookup(&endpoint).await {
+ let peer_id = Some(entry.key.into());
+ if let Err(err) = self.lookup_service.start_lookup(&endpoint, peer_id).await {
self.update_entry(&entry.key.into(), UNSTABLE_ENTRY).await;
error!("Failed to do lookup: {endpoint}: {err}");
}
@@ -268,7 +284,7 @@ impl Discovery {
None => {
let peers = &self.config.bootstrap_peers;
for endpoint in peers.choose_multiple(&mut OsRng, peers.len()) {
- if let Err(err) = self.lookup_service.start_lookup(endpoint).await {
+ if let Err(err) = self.lookup_service.start_lookup(endpoint, None).await {
error!("Failed to do lookup: {endpoint}: {err}");
}
}
diff --git a/p2p/src/discovery/refresh.rs b/p2p/src/discovery/refresh.rs
index d095f19..f797c71 100644
--- a/p2p/src/discovery/refresh.rs
+++ b/p2p/src/discovery/refresh.rs
@@ -10,8 +10,8 @@ use smol::{
};
use karyons_core::{
- async_utils::{timeout, Backoff, TaskGroup, TaskResult},
- utils::{decode, encode},
+ async_util::{timeout, Backoff, TaskGroup, TaskResult},
+ util::{decode, encode},
GlobalExecutor,
};
diff --git a/p2p/src/error.rs b/p2p/src/error.rs
index 0c1d50c..6274d4c 100644
--- a/p2p/src/error.rs
+++ b/p2p/src/error.rs
@@ -11,6 +11,9 @@ pub enum Error {
#[error("Unsupported protocol error: {0}")]
UnsupportedProtocol(String),
+ #[error("Try from public key Error: {0}")]
+ TryFromPublicKey(&'static str),
+
#[error("Invalid message error: {0}")]
InvalidMsg(String),
@@ -50,6 +53,21 @@ pub enum Error {
#[error("Peer already connected")]
PeerAlreadyConnected,
+ #[error("Yasna Error: {0}")]
+ Yasna(#[from] yasna::ASN1Error),
+
+ #[error("X509 Parser Error: {0}")]
+ X509Parser(#[from] x509_parser::error::X509Error),
+
+ #[error("Rcgen Error: {0}")]
+ Rcgen(#[from] rcgen::RcgenError),
+
+ #[error("Tls Error: {0}")]
+ Rustls(#[from] async_rustls::rustls::Error),
+
+ #[error("Invalid DNS Name: {0}")]
+ InvalidDnsNameError(#[from] async_rustls::rustls::client::InvalidDnsNameError),
+
#[error("Channel Send Error: {0}")]
ChannelSend(String),
diff --git a/p2p/src/lib.rs b/p2p/src/lib.rs
index c0a3b5b..6585287 100644
--- a/p2p/src/lib.rs
+++ b/p2p/src/lib.rs
@@ -7,19 +7,19 @@
//! use easy_parallel::Parallel;
//! use smol::{channel as smol_channel, future, Executor};
//!
+//! use karyons_core::key_pair::{KeyPair, KeyPairType};
//! use karyons_p2p::{Backend, Config, PeerID};
//!
-//! let peer_id = PeerID::random();
+//! let key_pair = KeyPair::generate(&KeyPairType::Ed25519);
//!
//! // Create the configuration for the backend.
//! let mut config = Config::default();
//!
-//!
//! // Create a new Executor
//! let ex = Arc::new(Executor::new());
//!
//! // Create a new Backend
-//! let backend = Backend::new(peer_id, config, ex.clone());
+//! let backend = Backend::new(&key_pair, config, ex.clone());
//!
//! let task = async {
//! // Run the backend
@@ -36,12 +36,12 @@
//! ```
//!
mod backend;
+mod codec;
mod config;
mod connection;
mod connector;
mod discovery;
mod error;
-mod io_codec;
mod listener;
mod message;
mod peer;
@@ -49,7 +49,8 @@ mod peer_pool;
mod protocols;
mod routing_table;
mod slots;
-mod utils;
+mod tls_config;
+mod version;
/// Responsible for network and system monitoring.
/// [`Read More`](./monitor/struct.Monitor.html)
@@ -62,6 +63,6 @@ pub use backend::{ArcBackend, Backend};
pub use config::Config;
pub use error::Error as P2pError;
pub use peer::{ArcPeer, PeerID};
-pub use utils::Version;
+pub use version::Version;
use error::{Error, Result};
diff --git a/p2p/src/listener.rs b/p2p/src/listener.rs
index f2391f7..58a0931 100644
--- a/p2p/src/listener.rs
+++ b/p2p/src/listener.rs
@@ -1,28 +1,36 @@
use std::{future::Future, sync::Arc};
-use log::{error, info, trace};
+use log::{debug, error, info};
use karyons_core::{
- async_utils::{TaskGroup, TaskResult},
+ async_util::{TaskGroup, TaskResult},
+ key_pair::KeyPair,
GlobalExecutor,
};
-use karyons_net::{listen, Conn, Endpoint, Listener as NetListener};
+use karyons_net::{listen, tls, Conn, Endpoint, Listener as NetListener};
use crate::{
monitor::{ConnEvent, Monitor},
slots::ConnectionSlots,
- Result,
+ tls_config::tls_server_config,
+ Error, Result,
};
/// Responsible for creating inbound connections with other peers.
pub struct Listener {
+ /// Identity Key pair
+ key_pair: KeyPair,
+
/// Managing spawned tasks.
task_group: TaskGroup<'static>,
/// Manages available inbound slots.
connection_slots: Arc<ConnectionSlots>,
+ /// Enables secure connection.
+ enable_tls: bool,
+
/// Responsible for network and system monitoring.
monitor: Arc<Monitor>,
}
@@ -30,13 +38,17 @@ pub struct Listener {
impl Listener {
/// Creates a new Listener
pub fn new(
+ key_pair: &KeyPair,
connection_slots: Arc<ConnectionSlots>,
+ enable_tls: bool,
monitor: Arc<Monitor>,
ex: GlobalExecutor,
) -> Arc<Self> {
Arc::new(Self {
+ key_pair: key_pair.clone(),
connection_slots,
task_group: TaskGroup::new(ex),
+ enable_tls,
monitor,
})
}
@@ -55,7 +67,7 @@ impl Listener {
where
Fut: Future<Output = Result<()>> + Send + 'static,
{
- let listener = match listen(&endpoint).await {
+ let listener = match self.listend(&endpoint).await {
Ok(listener) => {
self.monitor
.notify(&ConnEvent::Listening(endpoint.clone()).into())
@@ -67,21 +79,17 @@ impl Listener {
self.monitor
.notify(&ConnEvent::ListenFailed(endpoint).into())
.await;
- return Err(err.into());
+ return Err(err);
}
};
let resolved_endpoint = listener.local_endpoint()?;
- info!("Start listening on {endpoint}");
+ info!("Start listening on {resolved_endpoint}");
let selfc = self.clone();
self.task_group
- .spawn(selfc.listen_loop(listener, callback), |res| async move {
- if let TaskResult::Completed(Err(err)) = res {
- error!("Listen loop stopped: {endpoint} {err}");
- }
- });
+ .spawn(selfc.listen_loop(listener, callback), |_| async {});
Ok(resolved_endpoint)
}
@@ -94,8 +102,7 @@ impl Listener {
self: Arc<Self>,
listener: Box<dyn NetListener>,
callback: impl FnOnce(Conn) -> Fut + Clone + Send + 'static,
- ) -> Result<()>
- where
+ ) where
Fut: Future<Output = Result<()>> + Send + 'static,
{
loop {
@@ -103,27 +110,35 @@ impl Listener {
self.connection_slots.wait_for_slot().await;
let result = listener.accept().await;
- let conn = match result {
+ let (conn, endpoint) = match result {
Ok(c) => {
+ let endpoint = match c.peer_endpoint() {
+ Ok(e) => e,
+ Err(err) => {
+ self.monitor.notify(&ConnEvent::AcceptFailed.into()).await;
+ error!("Failed to accept a new connection: {err}");
+ continue;
+ }
+ };
+
self.monitor
- .notify(&ConnEvent::Accepted(c.peer_endpoint()?).into())
+ .notify(&ConnEvent::Accepted(endpoint.clone()).into())
.await;
- c
+ (c, endpoint)
}
Err(err) => {
error!("Failed to accept a new connection: {err}");
self.monitor.notify(&ConnEvent::AcceptFailed.into()).await;
- return Err(err.into());
+ continue;
}
};
self.connection_slots.add();
let selfc = self.clone();
- let endpoint = conn.peer_endpoint()?;
let on_disconnect = |res| async move {
if let TaskResult::Completed(Err(err)) = res {
- trace!("Inbound connection dropped: {err}");
+ debug!("Inbound connection dropped: {err}");
}
selfc
.monitor
@@ -136,4 +151,14 @@ impl Listener {
self.task_group.spawn(callback(conn), on_disconnect);
}
}
+
+ async fn listend(&self, endpoint: &Endpoint) -> Result<Box<dyn NetListener>> {
+ if self.enable_tls {
+ let tls_config = tls_server_config(&self.key_pair)?;
+ tls::listen(endpoint, tls_config).await
+ } else {
+ listen(endpoint).await
+ }
+ .map_err(Error::KaryonsNet)
+ }
}
diff --git a/p2p/src/message.rs b/p2p/src/message.rs
index 3779cc1..6b23322 100644
--- a/p2p/src/message.rs
+++ b/p2p/src/message.rs
@@ -4,7 +4,7 @@ use bincode::{Decode, Encode};
use karyons_net::{Addr, Port};
-use crate::{protocol::ProtocolID, routing_table::Entry, utils::VersionInt, PeerID};
+use crate::{protocol::ProtocolID, routing_table::Entry, version::VersionInt, PeerID};
/// The size of the message header, in bytes.
pub const MSG_HEADER_SIZE: usize = 6;
diff --git a/p2p/src/monitor.rs b/p2p/src/monitor.rs
index fbbf43f..1f74503 100644
--- a/p2p/src/monitor.rs
+++ b/p2p/src/monitor.rs
@@ -17,6 +17,7 @@ use karyons_net::Endpoint;
///
/// use smol::Executor;
///
+/// use karyons_core::key_pair::{KeyPair, KeyPairType};
/// use karyons_p2p::{Config, Backend, PeerID};
///
/// async {
@@ -24,7 +25,8 @@ use karyons_net::Endpoint;
/// // Create a new Executor
/// let ex = Arc::new(Executor::new());
///
-/// let backend = Backend::new(PeerID::random(), Config::default(), ex);
+/// let key_pair = KeyPair::generate(&KeyPairType::Ed25519);
+/// let backend = Backend::new(&key_pair, Config::default(), ex);
///
/// // Create a new Subscription
/// let sub = backend.monitor().await;
diff --git a/p2p/src/peer/mod.rs b/p2p/src/peer/mod.rs
index 85cd558..6ed0dd8 100644
--- a/p2p/src/peer/mod.rs
+++ b/p2p/src/peer/mod.rs
@@ -11,17 +11,17 @@ use smol::{
};
use karyons_core::{
- async_utils::{select, Either, TaskGroup, TaskResult},
+ async_util::{select, Either, TaskGroup, TaskResult},
event::{ArcEventSys, EventListener, EventSys},
- utils::{decode, encode},
+ util::{decode, encode},
GlobalExecutor,
};
use karyons_net::Endpoint;
use crate::{
+ codec::{Codec, CodecMsg},
connection::ConnDirection,
- io_codec::{CodecMsg, IOCodec},
message::{NetMsgCmd, ProtocolMsg, ShutdownMsg},
peer_pool::{ArcPeerPool, WeakPeerPool},
protocol::{Protocol, ProtocolEvent, ProtocolID},
@@ -37,8 +37,8 @@ pub struct Peer {
/// A weak pointer to `PeerPool`
peer_pool: WeakPeerPool,
- /// Holds the IOCodec for the peer connection
- io_codec: IOCodec,
+ /// Holds the Codec for the peer connection
+ codec: Codec,
/// Remote endpoint for the peer
remote_endpoint: Endpoint,
@@ -64,7 +64,7 @@ impl Peer {
pub fn new(
peer_pool: WeakPeerPool,
id: &PeerID,
- io_codec: IOCodec,
+ codec: Codec,
remote_endpoint: Endpoint,
conn_direction: ConnDirection,
ex: GlobalExecutor,
@@ -72,7 +72,7 @@ impl Peer {
Arc::new(Peer {
id: id.clone(),
peer_pool,
- io_codec,
+ codec,
protocol_ids: RwLock::new(Vec::new()),
remote_endpoint,
conn_direction,
@@ -97,7 +97,7 @@ impl Peer {
payload: payload.to_vec(),
};
- self.io_codec.write(NetMsgCmd::Protocol, &proto_msg).await?;
+ self.codec.write(NetMsgCmd::Protocol, &proto_msg).await?;
Ok(())
}
@@ -124,10 +124,7 @@ impl Peer {
let _ = self.stop_chan.0.try_send(Ok(()));
// No need to handle the error here
- let _ = self
- .io_codec
- .write(NetMsgCmd::Shutdown, &ShutdownMsg(0))
- .await;
+ let _ = self.codec.write(NetMsgCmd::Shutdown, &ShutdownMsg(0)).await;
// Force shutting down
self.task_group.cancel().await;
@@ -174,7 +171,7 @@ impl Peer {
/// Start a read loop to handle incoming messages from the peer connection.
async fn read_loop(&self) -> Result<()> {
loop {
- let fut = select(self.stop_chan.1.recv(), self.io_codec.read()).await;
+ let fut = select(self.stop_chan.1.recv(), self.codec.read()).await;
let result = match fut {
Either::Left(stop_signal) => {
trace!("Peer {} received a stop signal", self.id);
diff --git a/p2p/src/peer/peer_id.rs b/p2p/src/peer/peer_id.rs
index c8aec7d..903d827 100644
--- a/p2p/src/peer/peer_id.rs
+++ b/p2p/src/peer/peer_id.rs
@@ -2,6 +2,10 @@ use bincode::{Decode, Encode};
use rand::{rngs::OsRng, RngCore};
use sha2::{Digest, Sha256};
+use karyons_core::key_pair::PublicKey;
+
+use crate::Error;
+
/// Represents a unique identifier for a peer.
#[derive(Clone, Debug, Eq, PartialEq, Hash, Decode, Encode)]
pub struct PeerID(pub [u8; 32]);
@@ -39,3 +43,16 @@ impl From<[u8; 32]> for PeerID {
PeerID(b)
}
}
+
+impl TryFrom<PublicKey> for PeerID {
+ type Error = Error;
+
+ fn try_from(pk: PublicKey) -> Result<Self, Self::Error> {
+ let pk: [u8; 32] = pk
+ .as_bytes()
+ .try_into()
+ .map_err(|_| Error::TryFromPublicKey("Failed to convert public key to [u8;32]"))?;
+
+ Ok(PeerID(pk))
+ }
+}
diff --git a/p2p/src/peer_pool.rs b/p2p/src/peer_pool.rs
index a0079f2..dd7e669 100644
--- a/p2p/src/peer_pool.rs
+++ b/p2p/src/peer_pool.rs
@@ -11,23 +11,23 @@ use smol::{
};
use karyons_core::{
- async_utils::{TaskGroup, TaskResult},
- utils::decode,
+ async_util::{TaskGroup, TaskResult},
+ util::decode,
GlobalExecutor,
};
use karyons_net::Conn;
use crate::{
+ codec::{Codec, CodecMsg},
config::Config,
connection::{ConnDirection, ConnQueue},
- io_codec::{CodecMsg, IOCodec},
message::{get_msg_payload, NetMsg, NetMsgCmd, VerAckMsg, VerMsg},
monitor::{Monitor, PeerPoolEvent},
peer::{ArcPeer, Peer, PeerID},
protocol::{Protocol, ProtocolConstructor, ProtocolID},
protocols::PingProtocol,
- utils::{version_match, Version, VersionInt},
+ version::{version_match, Version, VersionInt},
Error, Result,
};
@@ -155,10 +155,10 @@ impl PeerPool {
disconnect_signal: Sender<Result<()>>,
) -> Result<()> {
let endpoint = conn.peer_endpoint()?;
- let io_codec = IOCodec::new(conn);
+ let codec = Codec::new(conn);
// Do a handshake with the connection before creating a new peer.
- let pid = self.do_handshake(&io_codec, conn_direction).await?;
+ let pid = self.do_handshake(&codec, conn_direction).await?;
// TODO: Consider restricting the subnet for inbound connections
if self.contains_peer(&pid).await {
@@ -169,7 +169,7 @@ impl PeerPool {
let peer = Peer::new(
Arc::downgrade(self),
&pid,
- io_codec,
+ codec,
endpoint.clone(),
conn_direction.clone(),
self.executor.clone(),
@@ -235,20 +235,16 @@ impl PeerPool {
}
/// Initiate a handshake with a connection.
- async fn do_handshake(
- &self,
- io_codec: &IOCodec,
- conn_direction: &ConnDirection,
- ) -> Result<PeerID> {
+ async fn do_handshake(&self, codec: &Codec, conn_direction: &ConnDirection) -> Result<PeerID> {
match conn_direction {
ConnDirection::Inbound => {
- let result = self.wait_vermsg(io_codec).await;
+ let result = self.wait_vermsg(codec).await;
match result {
Ok(_) => {
- self.send_verack(io_codec, true).await?;
+ self.send_verack(codec, true).await?;
}
Err(Error::IncompatibleVersion(_)) | Err(Error::UnsupportedProtocol(_)) => {
- self.send_verack(io_codec, false).await?;
+ self.send_verack(codec, false).await?;
}
_ => {}
}
@@ -256,14 +252,14 @@ impl PeerPool {
}
ConnDirection::Outbound => {
- self.send_vermsg(io_codec).await?;
- self.wait_verack(io_codec).await
+ self.send_vermsg(codec).await?;
+ self.wait_verack(codec).await
}
}
}
/// Send a Version message
- async fn send_vermsg(&self, io_codec: &IOCodec) -> Result<()> {
+ async fn send_vermsg(&self, codec: &Codec) -> Result<()> {
let pids = self.protocol_versions.read().await;
let protocols = pids.iter().map(|p| (p.0.clone(), p.1.v.clone())).collect();
drop(pids);
@@ -275,16 +271,16 @@ impl PeerPool {
};
trace!("Send VerMsg");
- io_codec.write(NetMsgCmd::Version, &vermsg).await?;
+ codec.write(NetMsgCmd::Version, &vermsg).await?;
Ok(())
}
/// Wait for a Version message
///
/// Returns the peer's ID upon successfully receiving the Version message.
- async fn wait_vermsg(&self, io_codec: &IOCodec) -> Result<PeerID> {
+ async fn wait_vermsg(&self, codec: &Codec) -> Result<PeerID> {
let timeout = Duration::from_secs(self.config.handshake_timeout);
- let msg: NetMsg = io_codec.read_timeout(timeout).await?;
+ let msg: NetMsg = codec.read_timeout(timeout).await?;
let payload = get_msg_payload!(Version, msg);
let (vermsg, _) = decode::<VerMsg>(&payload)?;
@@ -300,23 +296,23 @@ impl PeerPool {
}
/// Send a Verack message
- async fn send_verack(&self, io_codec: &IOCodec, ack: bool) -> Result<()> {
+ async fn send_verack(&self, codec: &Codec, ack: bool) -> Result<()> {
let verack = VerAckMsg {
peer_id: self.id.clone(),
ack,
};
trace!("Send VerAckMsg {:?}", verack);
- io_codec.write(NetMsgCmd::Verack, &verack).await?;
+ codec.write(NetMsgCmd::Verack, &verack).await?;
Ok(())
}
/// Wait for a Verack message
///
/// Returns the peer's ID upon successfully receiving the Verack message.
- async fn wait_verack(&self, io_codec: &IOCodec) -> Result<PeerID> {
+ async fn wait_verack(&self, codec: &Codec) -> Result<PeerID> {
let timeout = Duration::from_secs(self.config.handshake_timeout);
- let msg: NetMsg = io_codec.read_timeout(timeout).await?;
+ let msg: NetMsg = codec.read_timeout(timeout).await?;
let payload = get_msg_payload!(Verack, msg);
let (verack, _) = decode::<VerAckMsg>(&payload)?;
diff --git a/p2p/src/protocol.rs b/p2p/src/protocol.rs
index 770b695..8ddc685 100644
--- a/p2p/src/protocol.rs
+++ b/p2p/src/protocol.rs
@@ -4,7 +4,7 @@ use async_trait::async_trait;
use karyons_core::{event::EventValue, Executor};
-use crate::{peer::ArcPeer, utils::Version, Result};
+use crate::{peer::ArcPeer, version::Version, Result};
pub type ArcProtocol = Arc<dyn Protocol>;
@@ -37,6 +37,7 @@ impl EventValue for ProtocolEvent {
/// use async_trait::async_trait;
/// use smol::Executor;
///
+/// use karyons_core::key_pair::{KeyPair, KeyPairType};
/// use karyons_p2p::{
/// protocol::{ArcProtocol, Protocol, ProtocolID, ProtocolEvent},
/// Backend, PeerID, Config, Version, P2pError, ArcPeer};
@@ -84,14 +85,14 @@ impl EventValue for ProtocolEvent {
/// }
///
/// async {
-/// let peer_id = PeerID::random();
+/// let key_pair = KeyPair::generate(&KeyPairType::Ed25519);
/// let config = Config::default();
///
/// // Create a new Executor
/// let ex = Arc::new(Executor::new());
///
/// // Create a new Backend
-/// let backend = Backend::new(peer_id, config, ex);
+/// let backend = Backend::new(&key_pair, config, ex);
///
/// // Attach the NewProtocol
/// let c = move |peer| NewProtocol::new(peer);
diff --git a/p2p/src/protocols/ping.rs b/p2p/src/protocols/ping.rs
index dc1b9a1..0a5488d 100644
--- a/p2p/src/protocols/ping.rs
+++ b/p2p/src/protocols/ping.rs
@@ -12,9 +12,9 @@ use smol::{
};
use karyons_core::{
- async_utils::{select, timeout, Either, TaskGroup, TaskResult},
+ async_util::{select, timeout, Either, TaskGroup, TaskResult},
event::EventListener,
- utils::decode,
+ util::decode,
Executor,
};
@@ -23,7 +23,7 @@ use karyons_net::NetError;
use crate::{
peer::ArcPeer,
protocol::{ArcProtocol, Protocol, ProtocolEvent, ProtocolID},
- utils::Version,
+ version::Version,
Result,
};
diff --git a/p2p/src/routing_table/entry.rs b/p2p/src/routing_table/entry.rs
index b3f219f..c5fa65d 100644
--- a/p2p/src/routing_table/entry.rs
+++ b/p2p/src/routing_table/entry.rs
@@ -20,7 +20,7 @@ pub struct Entry {
impl PartialEq for Entry {
fn eq(&self, other: &Self) -> bool {
- // XXX this should also compare both addresses (the self.addr == other.addr)
+ // TODO: this should also compare both addresses (the self.addr == other.addr)
self.key == other.key
}
}
diff --git a/p2p/src/routing_table/mod.rs b/p2p/src/routing_table/mod.rs
index 5277c0a..cfc3128 100644
--- a/p2p/src/routing_table/mod.rs
+++ b/p2p/src/routing_table/mod.rs
@@ -1,5 +1,8 @@
+use std::net::IpAddr;
+
mod bucket;
mod entry;
+
pub use bucket::{
Bucket, BucketEntry, EntryStatusFlag, CONNECTED_ENTRY, DISCONNECTED_ENTRY, INCOMPATIBLE_ENTRY,
PENDING_ENTRY, UNREACHABLE_ENTRY, UNSTABLE_ENTRY,
@@ -8,7 +11,7 @@ pub use entry::{xor_distance, Entry, Key};
use rand::{rngs::OsRng, seq::SliceRandom};
-use crate::utils::subnet_match;
+use karyons_net::Addr;
use bucket::BUCKET_SIZE;
use entry::KEY_SIZE;
@@ -262,6 +265,20 @@ impl RoutingTable {
}
}
+/// Check if two addresses belong to the same subnet.
+pub fn subnet_match(addr: &Addr, other_addr: &Addr) -> bool {
+ match (addr, other_addr) {
+ (Addr::Ip(IpAddr::V4(ip)), Addr::Ip(IpAddr::V4(other_ip))) => {
+ // TODO: Consider moving this to a different place
+ if other_ip.is_loopback() && ip.is_loopback() {
+ return false;
+ }
+ ip.octets()[0..3] == other_ip.octets()[0..3]
+ }
+ _ => false,
+ }
+}
+
#[cfg(test)]
mod tests {
use super::bucket::ALL_ENTRY;
diff --git a/p2p/src/slots.rs b/p2p/src/slots.rs
index 99f0a78..d3a1d0a 100644
--- a/p2p/src/slots.rs
+++ b/p2p/src/slots.rs
@@ -1,6 +1,6 @@
use std::sync::atomic::{AtomicUsize, Ordering};
-use karyons_core::async_utils::CondWait;
+use karyons_core::async_util::CondWait;
/// Manages available inbound and outbound slots.
pub struct ConnectionSlots {
diff --git a/p2p/src/tls_config.rs b/p2p/src/tls_config.rs
new file mode 100644
index 0000000..f3b231a
--- /dev/null
+++ b/p2p/src/tls_config.rs
@@ -0,0 +1,214 @@
+use std::sync::Arc;
+
+use async_rustls::rustls::{
+ self, cipher_suite::TLS13_CHACHA20_POLY1305_SHA256, client::ServerCertVerifier,
+ server::ClientCertVerifier, Certificate, CertificateError, Error::InvalidCertificate,
+ PrivateKey, SupportedCipherSuite, SupportedKxGroup, SupportedProtocolVersion,
+};
+use log::error;
+use x509_parser::{certificate::X509Certificate, parse_x509_certificate};
+
+use karyons_core::key_pair::{KeyPair, KeyPairType, PublicKey};
+
+use crate::{PeerID, Result};
+
+// NOTE: This code needs a comprehensive audit.
+
+static PROTOCOL_VERSIONS: &[&SupportedProtocolVersion] = &[&rustls::version::TLS13];
+static CIPHER_SUITES: &[SupportedCipherSuite] = &[TLS13_CHACHA20_POLY1305_SHA256];
+static KX_GROUPS: &[&SupportedKxGroup] = &[&rustls::kx_group::X25519];
+
+const BAD_SIGNATURE_ERR: rustls::Error = InvalidCertificate(CertificateError::BadSignature);
+const BAD_ENCODING_ERR: rustls::Error = InvalidCertificate(CertificateError::BadEncoding);
+
+/// Returns a TLS client configuration.
+pub fn tls_client_config(
+ key_pair: &KeyPair,
+ peer_id: Option<PeerID>,
+) -> Result<rustls::ClientConfig> {
+ let (cert, private_key) = generate_cert(key_pair)?;
+ let server_verifier = SrvrCertVerifier { peer_id };
+ let client_config = rustls::ClientConfig::builder()
+ .with_cipher_suites(CIPHER_SUITES)
+ .with_kx_groups(KX_GROUPS)
+ .with_protocol_versions(PROTOCOL_VERSIONS)?
+ .with_custom_certificate_verifier(Arc::new(server_verifier))
+ .with_client_auth_cert(vec![cert], private_key)?;
+
+ Ok(client_config)
+}
+
+/// Returns a TLS server configuration.
+pub fn tls_server_config(key_pair: &KeyPair) -> Result<rustls::ServerConfig> {
+ let (cert, private_key) = generate_cert(key_pair)?;
+ let client_verifier = CliCertVerifier {};
+ let server_config = rustls::ServerConfig::builder()
+ .with_cipher_suites(CIPHER_SUITES)
+ .with_kx_groups(KX_GROUPS)
+ .with_protocol_versions(PROTOCOL_VERSIONS)?
+ .with_client_cert_verifier(Arc::new(client_verifier))
+ .with_single_cert(vec![cert], private_key)?;
+
+ Ok(server_config)
+}
+
+/// Generates a certificate and returns both the certificate and the private key.
+fn generate_cert(key_pair: &KeyPair) -> Result<(Certificate, PrivateKey)> {
+ let cert_key_pair = rcgen::KeyPair::generate(&rcgen::PKCS_ED25519)?;
+ let private_key = rustls::PrivateKey(cert_key_pair.serialize_der());
+
+ // Add a custom extension to the certificate:
+ // - Sign the certificate's public key with the provided key pair's public key
+ // - Append both the signature and the key pair's public key to the extension
+ let signature = key_pair.sign(&cert_key_pair.public_key_der());
+ let ext_content = yasna::encode_der(&(key_pair.public().as_bytes().to_vec(), signature));
+ // XXX: Not sure about the oid number ???
+ let mut ext = rcgen::CustomExtension::from_oid_content(&[0, 0, 0, 0], ext_content);
+ ext.set_criticality(true);
+
+ let mut params = rcgen::CertificateParams::new(vec![]);
+ params.alg = &rcgen::PKCS_ED25519;
+ params.key_pair = Some(cert_key_pair);
+ params.custom_extensions.push(ext);
+
+ let cert = rustls::Certificate(rcgen::Certificate::from_params(params)?.serialize_der()?);
+ Ok((cert, private_key))
+}
+
+/// Verifies the given certification.
+fn verify_cert(end_entity: &Certificate) -> std::result::Result<PeerID, rustls::Error> {
+ // Parse the certificate.
+ let cert = parse_cert(end_entity)?;
+
+ match cert.extensions().first() {
+ Some(ext) => {
+ // Extract the peer id (public key) and the signature from the extension.
+ let (public_key, signature): (Vec<u8>, Vec<u8>) =
+ yasna::decode_der(ext.value).map_err(|_| BAD_ENCODING_ERR)?;
+
+ // Use the peer id (public key) to verify the extracted signature.
+ let public_key = PublicKey::from_bytes(&KeyPairType::Ed25519, &public_key)
+ .map_err(|_| BAD_ENCODING_ERR)?;
+ public_key
+ .verify(cert.public_key().raw, &signature)
+ .map_err(|_| BAD_SIGNATURE_ERR)?;
+
+ // Verify the certificate signature.
+ verify_cert_signature(
+ &cert,
+ cert.tbs_certificate.as_ref(),
+ cert.signature_value.as_ref(),
+ )?;
+
+ PeerID::try_from(public_key).map_err(|_| BAD_ENCODING_ERR)
+ }
+ None => Err(BAD_ENCODING_ERR),
+ }
+}
+
+/// Parses the given x509 certificate.
+fn parse_cert(end_entity: &Certificate) -> std::result::Result<X509Certificate, rustls::Error> {
+ let (_, cert) = parse_x509_certificate(end_entity.as_ref()).map_err(|_| BAD_ENCODING_ERR)?;
+
+ if !cert.validity().is_valid() {
+ return Err(InvalidCertificate(CertificateError::NotValidYet));
+ }
+
+ Ok(cert)
+}
+
+/// Verifies the signature of the given certificate.
+fn verify_cert_signature(
+ cert: &X509Certificate,
+ message: &[u8],
+ signature: &[u8],
+) -> std::result::Result<(), rustls::Error> {
+ let public_key = PublicKey::from_bytes(
+ &KeyPairType::Ed25519,
+ cert.tbs_certificate.subject_pki.subject_public_key.as_ref(),
+ )
+ .map_err(|_| BAD_ENCODING_ERR)?;
+
+ public_key
+ .verify(message, signature)
+ .map_err(|_| BAD_SIGNATURE_ERR)
+}
+
+struct SrvrCertVerifier {
+ peer_id: Option<PeerID>,
+}
+
+impl ServerCertVerifier for SrvrCertVerifier {
+ fn verify_server_cert(
+ &self,
+ end_entity: &Certificate,
+ _intermediates: &[Certificate],
+ _server_name: &rustls::ServerName,
+ _scts: &mut dyn Iterator<Item = &[u8]>,
+ _ocsp_response: &[u8],
+ _now: std::time::SystemTime,
+ ) -> std::result::Result<rustls::client::ServerCertVerified, rustls::Error> {
+ let peer_id = match verify_cert(end_entity) {
+ Ok(pid) => pid,
+ Err(err) => {
+ error!("Failed to verify cert: {err}");
+ return Err(err);
+ }
+ };
+
+ // Verify that the peer id in the certificate's extension matches the
+ // one the client intends to connect to.
+ // Both should be equal for establishing a fully secure connection.
+ if let Some(pid) = &self.peer_id {
+ if pid != &peer_id {
+ return Err(InvalidCertificate(
+ CertificateError::ApplicationVerificationFailure,
+ ));
+ }
+ }
+
+ Ok(rustls::client::ServerCertVerified::assertion())
+ }
+
+ fn verify_tls13_signature(
+ &self,
+ message: &[u8],
+ cert: &Certificate,
+ dss: &rustls::DigitallySignedStruct,
+ ) -> std::result::Result<rustls::client::HandshakeSignatureValid, rustls::Error> {
+ let cert = parse_cert(cert)?;
+ verify_cert_signature(&cert, message, dss.signature())?;
+ Ok(rustls::client::HandshakeSignatureValid::assertion())
+ }
+}
+
+struct CliCertVerifier {}
+impl ClientCertVerifier for CliCertVerifier {
+ fn verify_client_cert(
+ &self,
+ end_entity: &Certificate,
+ _intermediates: &[Certificate],
+ _now: std::time::SystemTime,
+ ) -> std::result::Result<rustls::server::ClientCertVerified, rustls::Error> {
+ if let Err(err) = verify_cert(end_entity) {
+ error!("Failed to verify cert: {err}");
+ return Err(err);
+ };
+ Ok(rustls::server::ClientCertVerified::assertion())
+ }
+
+ fn verify_tls13_signature(
+ &self,
+ message: &[u8],
+ cert: &Certificate,
+ dss: &rustls::DigitallySignedStruct,
+ ) -> std::result::Result<rustls::client::HandshakeSignatureValid, rustls::Error> {
+ let cert = parse_cert(cert)?;
+ verify_cert_signature(&cert, message, dss.signature())?;
+ Ok(rustls::client::HandshakeSignatureValid::assertion())
+ }
+
+ fn client_auth_root_subjects(&self) -> &[rustls::DistinguishedName] {
+ &[]
+ }
+}
diff --git a/p2p/src/utils/mod.rs b/p2p/src/utils/mod.rs
deleted file mode 100644
index e8ff9d0..0000000
--- a/p2p/src/utils/mod.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-mod version;
-
-pub use version::{version_match, Version, VersionInt};
-
-use std::net::IpAddr;
-
-use karyons_net::Addr;
-
-/// Check if two addresses belong to the same subnet.
-pub fn subnet_match(addr: &Addr, other_addr: &Addr) -> bool {
- match (addr, other_addr) {
- (Addr::Ip(IpAddr::V4(ip)), Addr::Ip(IpAddr::V4(other_ip))) => {
- // XXX Consider moving this to a different location
- if other_ip.is_loopback() && ip.is_loopback() {
- return false;
- }
- ip.octets()[0..3] == other_ip.octets()[0..3]
- }
- _ => false,
- }
-}
diff --git a/p2p/src/utils/version.rs b/p2p/src/version.rs
index a101b28..a101b28 100644
--- a/p2p/src/utils/version.rs
+++ b/p2p/src/version.rs
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 23:17:53 +0000