AddrV2 structures
This commit is contained in:
Jake Rawsthorne
parent
c16053a265
commit
cf8e290c99
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@ -42,7 +42,7 @@ use util::psbt;
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use blockdata::transaction::{TxOut, Transaction, TxIn};
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use network::message_blockdata::Inventory;
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use network::address::Address;
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use network::address::{Address, AddrV2Message};
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/// Encoding error
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#[derive(Debug)]
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@ -530,6 +530,7 @@ macro_rules! impl_array {
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impl_array!(2);
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impl_array!(4);
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impl_array!(8);
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impl_array!(10);
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impl_array!(12);
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impl_array!(16);
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impl_array!(32);
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@ -600,6 +601,7 @@ impl_vec!(Inventory);
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impl_vec!(Vec<u8>);
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impl_vec!((u32, Address));
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impl_vec!(u64);
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impl_vec!(AddrV2Message);
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fn consensus_encode_with_size<S: io::Write>(data: &[u8], mut s: S) -> Result<usize, Error> {
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let vi_len = VarInt(data.len() as u64).consensus_encode(&mut s)?;
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@ -20,10 +20,10 @@
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use std::io;
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use std::fmt;
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use std::net::{SocketAddr, Ipv6Addr, SocketAddrV4, SocketAddrV6};
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use std::net::{SocketAddr, Ipv6Addr, SocketAddrV4, SocketAddrV6, Ipv4Addr};
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use network::constants::ServiceFlags;
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use consensus::encode::{self, Decodable, Encodable};
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use consensus::encode::{self, Decodable, Encodable, VarInt, ReadExt, WriteExt};
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/// A message which can be sent on the Bitcoin network
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#[derive(Clone, PartialEq, Eq, Hash)]
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@ -110,12 +110,167 @@ impl fmt::Debug for Address {
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}
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}
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/// Address received from BIP155 addrv2 message
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#[derive(Clone, PartialEq, Eq, Hash, Debug)]
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pub struct AddrV2Message {
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/// Time that this node was last seen as connected to the network
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pub time: u32,
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/// Service bits
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pub services: ServiceFlags,
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/// Network ID + Network Address
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pub addr: AddrV2,
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/// Network port, 0 if not applicable
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pub port: u16
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}
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/// Supported networks for use in BIP155 addrv2 message
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#[derive(Clone, PartialEq, Eq, Hash, Debug)]
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pub enum AddrV2 {
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/// IPV4
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Ipv4(Ipv4Addr),
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/// IPV6
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Ipv6(Ipv6Addr),
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/// TORV2
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TorV2([u8; 10]),
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/// TORV3
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TorV3([u8; 32]),
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/// I2P
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I2p([u8; 32]),
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/// CJDNS
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Cjdns(Ipv6Addr),
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/// Unknown
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Unknown(u8, Vec<u8>),
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}
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impl Encodable for AddrV2 {
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fn consensus_encode<W: io::Write>(&self, e: W) -> Result<usize, encode::Error> {
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fn encode_addr<W: io::Write>(mut e: W, network: u8, bytes: &[u8]) -> Result<usize, encode::Error> {
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let len =
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network.consensus_encode(&mut e)? +
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VarInt(bytes.len() as u64).consensus_encode(&mut e)? +
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bytes.len();
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e.emit_slice(bytes)?;
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Ok(len)
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}
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Ok(match *self {
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AddrV2::Ipv4(ref addr) => encode_addr(e, 1, &addr.octets())?,
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AddrV2::Ipv6(ref addr) => encode_addr(e, 2, &addr.octets())?,
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AddrV2::TorV2(ref bytes) => encode_addr(e, 3, bytes)?,
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AddrV2::TorV3(ref bytes) => encode_addr(e, 4, bytes)?,
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AddrV2::I2p(ref bytes) => encode_addr(e, 5, bytes)?,
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AddrV2::Cjdns(ref addr) => encode_addr(e, 6, &addr.octets())?,
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AddrV2::Unknown(network, ref bytes) => encode_addr(e, network, bytes)?
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})
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}
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}
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impl Decodable for AddrV2 {
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fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
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let network_id = u8::consensus_decode(&mut d)?;
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let len = VarInt::consensus_decode(&mut d)?.0;
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if len > 512 {
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return Err(encode::Error::ParseFailed("IP must be <= 512 bytes"));
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}
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Ok(match network_id {
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1 => {
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if len != 4 {
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return Err(encode::Error::ParseFailed("Invalid IPv4 address"));
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}
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let addr: [u8; 4] = Decodable::consensus_decode(&mut d)?;
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AddrV2::Ipv4(Ipv4Addr::new(addr[0], addr[1], addr[2], addr[3]))
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},
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2 => {
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if len != 16 {
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return Err(encode::Error::ParseFailed("Invalid IPv6 address"));
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}
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let addr: [u16; 8] = addr_to_be(Decodable::consensus_decode(&mut d)?);
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if addr[0..3] == ONION {
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return Err(encode::Error::ParseFailed("OnionCat address sent with IPv6 network id"));
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}
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if addr[0..6] == [0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xFFFF] {
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return Err(encode::Error::ParseFailed("IPV4 wrapped address sent with IPv6 network id"));
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}
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AddrV2::Ipv6(Ipv6Addr::new(
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addr[0],addr[1],addr[2],addr[3],
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addr[4],addr[5],addr[6],addr[7]
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))
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},
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3 => {
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if len != 10 {
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return Err(encode::Error::ParseFailed("Invalid TorV2 address"));
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}
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let id = Decodable::consensus_decode(&mut d)?;
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AddrV2::TorV2(id)
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},
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4 => {
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if len != 32 {
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return Err(encode::Error::ParseFailed("Invalid TorV3 address"));
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}
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let pubkey = Decodable::consensus_decode(&mut d)?;
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AddrV2::TorV3(pubkey)
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},
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5 => {
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if len != 32 {
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return Err(encode::Error::ParseFailed("Invalid I2P address"));
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}
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let hash = Decodable::consensus_decode(&mut d)?;
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AddrV2::I2p(hash)
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},
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6 => {
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if len != 16 {
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return Err(encode::Error::ParseFailed("Invalid CJDNS address"));
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}
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let addr: [u16; 8] = Decodable::consensus_decode(&mut d)?;
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// check the first byte for the CJDNS marker
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if addr[0] as u8 != 0xFC {
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return Err(encode::Error::ParseFailed("Invalid CJDNS address"));
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}
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let addr = addr_to_be(addr);
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AddrV2::Cjdns(Ipv6Addr::new(
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addr[0],addr[1],addr[2],addr[3],
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addr[4],addr[5],addr[6],addr[7]
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))
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},
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_ => {
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// len already checked above to be <= 512
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let mut addr = vec![0u8; len as usize];
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d.read_slice(&mut addr)?;
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AddrV2::Unknown(network_id, addr)
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}
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})
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}
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}
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impl Encodable for AddrV2Message {
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fn consensus_encode<W: io::Write>(&self, mut e: W) -> Result<usize, encode::Error> {
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let mut len = 0;
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len += self.time.consensus_encode(&mut e)?;
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len += VarInt(self.services.as_u64()).consensus_encode(&mut e)?;
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len += self.addr.consensus_encode(&mut e)?;
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len += self.port.to_be().consensus_encode(e)?;
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Ok(len)
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}
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}
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impl Decodable for AddrV2Message {
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fn consensus_decode<D: io::Read>(mut d: D) -> Result<Self, encode::Error> {
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Ok(AddrV2Message{
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time: Decodable::consensus_decode(&mut d)?,
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services: ServiceFlags::from(VarInt::consensus_decode(&mut d)?.0),
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addr: Decodable::consensus_decode(&mut d)?,
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port: u16::from_be(Decodable::consensus_decode(d)?),
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})
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}
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}
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#[cfg(test)]
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mod test {
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use std::str::FromStr;
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use super::Address;
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use super::{AddrV2Message, AddrV2, Address};
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use network::constants::ServiceFlags;
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use std::net::{SocketAddr, IpAddr, Ipv4Addr, Ipv6Addr};
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use hashes::hex::FromHex;
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use consensus::encode::{deserialize, serialize};
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@ -191,5 +346,116 @@ mod test {
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let addr = Address::new(&onionaddr, ServiceFlags::NONE);
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assert!(addr.socket_addr().is_err());
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}
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#[test]
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fn serialize_addrv2_test() {
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// Taken from https://github.com/bitcoin/bitcoin/blob/12a1c3ad1a43634d2a98717e49e3f02c4acea2fe/src/test/net_tests.cpp#L348
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let ip = AddrV2::Ipv4(Ipv4Addr::new(1, 2, 3, 4));
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assert_eq!(serialize(&ip), Vec::from_hex("010401020304").unwrap());
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let ip = AddrV2::Ipv6(Ipv6Addr::from_str("1a1b:2a2b:3a3b:4a4b:5a5b:6a6b:7a7b:8a8b").unwrap());
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assert_eq!(serialize(&ip), Vec::from_hex("02101a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b").unwrap());
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let ip = AddrV2::TorV2(FromHex::from_hex("f1f2f3f4f5f6f7f8f9fa").unwrap());
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assert_eq!(serialize(&ip), Vec::from_hex("030af1f2f3f4f5f6f7f8f9fa").unwrap());
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let ip = AddrV2::TorV3(FromHex::from_hex("53cd5648488c4707914182655b7664034e09e66f7e8cbf1084e654eb56c5bd88").unwrap());
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assert_eq!(serialize(&ip), Vec::from_hex("042053cd5648488c4707914182655b7664034e09e66f7e8cbf1084e654eb56c5bd88").unwrap());
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let ip = AddrV2::I2p(FromHex::from_hex("a2894dabaec08c0051a481a6dac88b64f98232ae42d4b6fd2fa81952dfe36a87").unwrap());
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assert_eq!(serialize(&ip), Vec::from_hex("0520a2894dabaec08c0051a481a6dac88b64f98232ae42d4b6fd2fa81952dfe36a87").unwrap());
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let ip = AddrV2::Cjdns(Ipv6Addr::from_str("fc00:1:2:3:4:5:6:7").unwrap());
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assert_eq!(serialize(&ip), Vec::from_hex("0610fc000001000200030004000500060007").unwrap());
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let ip = AddrV2::Unknown(170, Vec::from_hex("01020304").unwrap());
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assert_eq!(serialize(&ip), Vec::from_hex("aa0401020304").unwrap());
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}
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#[test]
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fn deserialize_addrv2_test() {
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// Taken from https://github.com/bitcoin/bitcoin/blob/12a1c3ad1a43634d2a98717e49e3f02c4acea2fe/src/test/net_tests.cpp#L386
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// Valid IPv4.
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let ip: AddrV2 = deserialize(&Vec::from_hex("010401020304").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::Ipv4(Ipv4Addr::new(1, 2, 3, 4)));
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// Invalid IPv4, valid length but address itself is shorter.
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deserialize::<AddrV2>(&Vec::from_hex("01040102").unwrap()).unwrap_err();
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// Invalid IPv4, with bogus length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("010501020304").unwrap()).is_err());
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// Invalid IPv4, with extreme length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("01fd010201020304").unwrap()).is_err());
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// Valid IPv6.
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let ip: AddrV2 = deserialize(&Vec::from_hex("02100102030405060708090a0b0c0d0e0f10").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::Ipv6(Ipv6Addr::from_str("102:304:506:708:90a:b0c:d0e:f10").unwrap()));
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// Invalid IPv6, with bogus length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("020400").unwrap()).is_err());
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// Invalid IPv6, contains embedded IPv4.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("021000000000000000000000ffff01020304").unwrap()).is_err());
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// Invalid IPv6, contains embedded TORv2.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("0210fd87d87eeb430102030405060708090a").unwrap()).is_err());
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// Valid TORv2.
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let ip: AddrV2 = deserialize(&Vec::from_hex("030af1f2f3f4f5f6f7f8f9fa").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::TorV2(FromHex::from_hex("f1f2f3f4f5f6f7f8f9fa").unwrap()));
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// Invalid TORv2, with bogus length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("030700").unwrap()).is_err());
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// Valid TORv3.
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let ip: AddrV2 = deserialize(&Vec::from_hex("042079bcc625184b05194975c28b66b66b0469f7f6556fb1ac3189a79b40dda32f1f").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::TorV3(FromHex::from_hex("79bcc625184b05194975c28b66b66b0469f7f6556fb1ac3189a79b40dda32f1f").unwrap()));
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// Invalid TORv3, with bogus length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("040000").unwrap()).is_err());
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// Valid I2P.
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let ip: AddrV2 = deserialize(&Vec::from_hex("0520a2894dabaec08c0051a481a6dac88b64f98232ae42d4b6fd2fa81952dfe36a87").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::I2p(FromHex::from_hex("a2894dabaec08c0051a481a6dac88b64f98232ae42d4b6fd2fa81952dfe36a87").unwrap()));
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// Invalid I2P, with bogus length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("050300").unwrap()).is_err());
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// Valid CJDNS.
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let ip: AddrV2 = deserialize(&Vec::from_hex("0610fc000001000200030004000500060007").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::Cjdns(Ipv6Addr::from_str("fc00:1:2:3:4:5:6:7").unwrap()));
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// Invalid CJDNS, incorrect marker
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assert!(deserialize::<AddrV2>(&Vec::from_hex("0610fd000001000200030004000500060007").unwrap()).is_err());
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// Invalid CJDNS, with bogus length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("060100").unwrap()).is_err());
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// Unknown, with extreme length.
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assert!(deserialize::<AddrV2>(&Vec::from_hex("aafe0000000201020304050607").unwrap()).is_err());
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// Unknown, with reasonable length.
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let ip: AddrV2 = deserialize(&Vec::from_hex("aa0401020304").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::Unknown(170, Vec::from_hex("01020304").unwrap()));
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// Unknown, with zero length.
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let ip: AddrV2 = deserialize(&Vec::from_hex("aa00").unwrap()).unwrap();
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assert_eq!(ip, AddrV2::Unknown(170, vec![]));
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}
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#[test]
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fn addrv2message_test() {
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let raw = Vec::from_hex("0261bc6649019902abab208d79627683fd4804010409090909208d").unwrap();
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let addresses: Vec<AddrV2Message> = deserialize(&raw).unwrap();
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assert_eq!(addresses, vec![
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AddrV2Message{services: ServiceFlags::NETWORK, time: 0x4966bc61, port: 8333, addr: AddrV2::Unknown(153, Vec::from_hex("abab").unwrap())},
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AddrV2Message{services: ServiceFlags::NETWORK_LIMITED | ServiceFlags::WITNESS | ServiceFlags::COMPACT_FILTERS, time: 0x83766279, port: 8333, addr: AddrV2::Ipv4(Ipv4Addr::new(9, 9, 9, 9))},
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]);
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assert_eq!(serialize(&addresses), raw);
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}
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}
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