use super::*;
use crate::Enr;
use enr::{CombinedPublicKey, NodeId};
use std::net::SocketAddr;
#[cfg(feature = "libp2p")]
use libp2p_core::{identity::PublicKey, multiaddr::Protocol, multihash, Multiaddr};
#[derive(Debug, Clone, PartialEq)]
pub struct NodeContact {
public_key: CombinedPublicKey,
socket_addr: SocketAddr,
enr: Option<Enr>,
}
#[derive(Debug, Clone)]
pub struct NonContactable {
pub enr: Enr,
}
impl NodeContact {
pub fn node_id(&self) -> NodeId {
self.public_key.clone().into()
}
pub fn seq_no(&self) -> Option<u64> {
self.enr.as_ref().map(|enr| enr.seq())
}
pub fn public_key(&self) -> CombinedPublicKey {
self.public_key.clone()
}
pub fn enr(&self) -> Option<Enr> {
self.enr.clone()
}
pub fn socket_addr(&self) -> SocketAddr {
self.socket_addr
}
pub fn node_address(&self) -> NodeAddress {
NodeAddress {
socket_addr: self.socket_addr,
node_id: self.node_id(),
}
}
pub fn to_address_and_enr(self) -> (NodeAddress, Option<Enr>) {
let NodeContact {
public_key,
socket_addr,
enr,
} = self;
(
NodeAddress {
node_id: public_key.into(),
socket_addr,
},
enr,
)
}
pub fn try_from_enr(enr: Enr, ip_mode: IpMode) -> Result<Self, NonContactable> {
let socket_addr = match ip_mode.get_contactable_addr(&enr) {
Some(socket_addr) => socket_addr,
None => return Err(NonContactable { enr }),
};
Ok(NodeContact {
public_key: enr.public_key(),
socket_addr,
enr: Some(enr),
})
}
#[cfg(feature = "libp2p")]
pub fn try_from_multiaddr(multiaddr: Multiaddr) -> Result<Self, &'static str> {
let mut ip_addr = None;
let mut udp_port = None;
let mut p2p = None;
for protocol in multiaddr.into_iter() {
match protocol {
Protocol::Udp(port) => udp_port = Some(port),
Protocol::Ip4(addr) => ip_addr = Some(addr.into()),
Protocol::Ip6(addr) => ip_addr = Some(addr.into()),
Protocol::P2p(multihash) => p2p = Some(multihash),
_ => {}
}
}
let udp_port = udp_port.ok_or("A UDP port must be specified in the multiaddr")?;
let ip_addr = ip_addr.ok_or("An IP address must be specified in the multiaddr")?;
let multihash = p2p.ok_or("The p2p protocol must be specified in the multiaddr")?;
if multihash.code() != u64::from(multihash::Code::Identity) {
return Err("The key type is unsupported");
}
let public_key: CombinedPublicKey =
match PublicKey::from_protobuf_encoding(&multihash.to_bytes()[2..])
.map_err(|_| "Invalid public key")?
{
PublicKey::Secp256k1(pk) => {
enr::k256::ecdsa::VerifyingKey::from_sec1_bytes(&pk.encode_uncompressed())
.expect("Libp2p key conversion, always valid")
.into()
}
PublicKey::Ed25519(pk) => enr::ed25519_dalek::PublicKey::from_bytes(&pk.encode())
.expect("Libp2p key conversion, always valid")
.into(),
_ => return Err("The key type is not supported"),
};
Ok(NodeContact {
public_key,
socket_addr: SocketAddr::new(ip_addr, udp_port),
enr: None,
})
}
}
#[cfg(test)]
impl From<Enr> for NodeContact {
#[track_caller]
fn from(enr: Enr) -> Self {
NodeContact::try_from_enr(enr, IpMode::default()).unwrap()
}
}
impl std::fmt::Display for NodeContact {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "Node: {}, addr: {:?}", self.node_id(), self.socket_addr)
}
}
#[derive(PartialEq, Hash, Eq, Clone, Debug)]
pub struct NodeAddress {
pub socket_addr: SocketAddr,
pub node_id: NodeId,
}
impl Ord for NodeAddress {
fn cmp(&self, other: &Self) -> std::cmp::Ordering {
let ord = self.node_id.raw().cmp(&other.node_id.raw());
if ord != std::cmp::Ordering::Equal {
return ord;
}
let ord = self.socket_addr.ip().cmp(&other.socket_addr.ip());
if ord != std::cmp::Ordering::Equal {
return ord;
}
self.socket_addr.port().cmp(&other.socket_addr.port())
}
}
impl PartialOrd for NodeAddress {
fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
Some(self.cmp(other))
}
}
impl NodeAddress {
pub fn new(socket_addr: SocketAddr, node_id: NodeId) -> Self {
Self {
socket_addr,
node_id,
}
}
}
impl std::fmt::Display for NodeAddress {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "Node: {}, addr: {:?}", self.node_id, self.socket_addr)
}
}