use std::borrow::Borrow;
use std::convert::TryFrom;
use anyhow::Result;
use crate::adnl;
use crate::proto;
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub struct IdFull([u8; 32]);
impl IdFull {
pub fn for_catchain_overlay<'tl, I>(unique_hash: &'tl [u8; 32], nodes: I) -> Self
where
I: Iterator<Item = &'tl [u8; 32]> + ExactSizeIterator + Clone,
{
Self(tl_proto::hash(proto::overlay::CatchainFirstBlock {
unique_hash,
nodes: tl_proto::IterRef(&nodes),
}))
}
pub fn for_workchain_overlay(workchain: i32, zero_state_file_hash: &[u8; 32]) -> Self {
Self(tl_proto::hash(proto::overlay::ShardPublicOverlayId {
workchain,
shard: 1u64 << 63,
zero_state_file_hash,
}))
}
pub fn as_slice(&self) -> &[u8; 32] {
&self.0
}
pub fn compute_short_id(&self) -> IdShort {
let key = everscale_crypto::tl::PublicKey::Overlay { name: &self.0 };
IdShort(tl_proto::hash(key))
}
}
#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Hash, Ord, PartialOrd)]
pub struct IdShort([u8; 32]);
impl IdShort {
#[inline(always)]
pub const fn new(id: [u8; 32]) -> Self {
Self(id)
}
pub fn verify_overlay_node(&self, node: &proto::overlay::Node) -> Result<()> {
if node.overlay != &self.0 {
return Err(OverlayIdError::OverlayIdMismatch.into());
}
let peer_id_full = adnl::NodeIdFull::try_from(node.id)?;
let peer_id = peer_id_full.compute_short_id();
let node_to_sign = proto::overlay::NodeToSign {
id: peer_id.as_slice(),
overlay: node.overlay,
version: node.version,
};
peer_id_full.verify(&node_to_sign, node.signature)?;
Ok(())
}
#[inline(always)]
pub const fn as_slice(&self) -> &[u8; 32] {
&self.0
}
}
impl PartialEq<[u8]> for IdShort {
fn eq(&self, other: &[u8]) -> bool {
self.0.eq(other)
}
}
impl PartialEq<[u8; 32]> for IdShort {
fn eq(&self, other: &[u8; 32]) -> bool {
self.0.eq(other)
}
}
impl From<IdShort> for [u8; 32] {
fn from(id: IdShort) -> Self {
id.0
}
}
impl From<&IdShort> for [u8; 32] {
fn from(id: &IdShort) -> Self {
id.0
}
}
impl From<[u8; 32]> for IdShort {
fn from(id: [u8; 32]) -> Self {
Self(id)
}
}
impl Borrow<[u8; 32]> for IdShort {
fn borrow(&self) -> &[u8; 32] {
&self.0
}
}
impl<'a> Borrow<[u8; 32]> for &'a IdShort {
fn borrow(&self) -> &[u8; 32] {
&self.0
}
}
impl std::fmt::Display for IdShort {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
f.write_str(&hex::encode(self.0))
}
}
#[derive(thiserror::Error, Debug)]
enum OverlayIdError {
#[error("Overlay id mismatch")]
OverlayIdMismatch,
}