X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Frouting%2Fgossip.rs;h=b9b70e0a03165e49f71f7f8c9bf185fd0388d7a2;hb=66060cae8af6969373bb16b73064b8ea3a7b689a;hp=40969b180af9d6904d79eb29d8cdf05b3c624bc9;hpb=42e2f1d1a645156180cbcc664989df78175301d2;p=rust-lightning diff --git a/lightning/src/routing/gossip.rs b/lightning/src/routing/gossip.rs index 40969b18..b9b70e0a 100644 --- a/lightning/src/routing/gossip.rs +++ b/lightning/src/routing/gossip.rs @@ -10,7 +10,7 @@ //! The [`NetworkGraph`] stores the network gossip and [`P2PGossipSync`] fetches it from peers use bitcoin::secp256k1::constants::PUBLIC_KEY_SIZE; -use bitcoin::secp256k1::PublicKey; +use bitcoin::secp256k1::{PublicKey, Verification}; use bitcoin::secp256k1::Secp256k1; use bitcoin::secp256k1; @@ -409,6 +409,29 @@ macro_rules! get_pubkey_from_node_id { } } +/// Verifies the signature of a [`NodeAnnouncement`]. +/// +/// Returns an error if it is invalid. +pub fn verify_node_announcement(msg: &NodeAnnouncement, secp_ctx: &Secp256k1) -> Result<(), LightningError> { + let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.contents.encode()[..])[..]); + secp_verify_sig!(secp_ctx, &msg_hash, &msg.signature, &get_pubkey_from_node_id!(msg.contents.node_id, "node_announcement"), "node_announcement"); + + Ok(()) +} + +/// Verifies all signatures included in a [`ChannelAnnouncement`]. +/// +/// Returns an error if one of the signatures is invalid. +pub fn verify_channel_announcement(msg: &ChannelAnnouncement, secp_ctx: &Secp256k1) -> Result<(), LightningError> { + let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.contents.encode()[..])[..]); + secp_verify_sig!(secp_ctx, &msg_hash, &msg.node_signature_1, &get_pubkey_from_node_id!(msg.contents.node_id_1, "channel_announcement"), "channel_announcement"); + secp_verify_sig!(secp_ctx, &msg_hash, &msg.node_signature_2, &get_pubkey_from_node_id!(msg.contents.node_id_2, "channel_announcement"), "channel_announcement"); + secp_verify_sig!(secp_ctx, &msg_hash, &msg.bitcoin_signature_1, &get_pubkey_from_node_id!(msg.contents.bitcoin_key_1, "channel_announcement"), "channel_announcement"); + secp_verify_sig!(secp_ctx, &msg_hash, &msg.bitcoin_signature_2, &get_pubkey_from_node_id!(msg.contents.bitcoin_key_2, "channel_announcement"), "channel_announcement"); + + Ok(()) +} + impl>, U: Deref, L: Deref> RoutingMessageHandler for P2PGossipSync where U::Target: UtxoLookup, L::Target: Logger { @@ -1120,26 +1143,26 @@ impl Writeable for NodeAnnouncementInfo { (4, self.rgb, required), (6, self.alias, required), (8, self.announcement_message, option), - (10, empty_addresses, vec_type), // Versions prior to 0.0.115 require this field + (10, empty_addresses, required_vec), // Versions prior to 0.0.115 require this field }); Ok(()) } } impl Readable for NodeAnnouncementInfo { - fn read(reader: &mut R) -> Result { + fn read(reader: &mut R) -> Result { _init_and_read_tlv_fields!(reader, { (0, features, required), (2, last_update, required), (4, rgb, required), (6, alias, required), (8, announcement_message, option), - (10, _addresses, vec_type), // deprecated, not used anymore + (10, _addresses, optional_vec), // deprecated, not used anymore }); let _: Option> = _addresses; Ok(Self { features: features.0.unwrap(), last_update: last_update.0.unwrap(), rgb: rgb.0.unwrap(), alias: alias.0.unwrap(), announcement_message }) - } + } } /// A user-defined name for a node, which may be used when displaying the node in a graph. @@ -1205,7 +1228,7 @@ impl Writeable for NodeInfo { write_tlv_fields!(writer, { // Note that older versions of LDK wrote the lowest inbound fees here at type 0 (2, self.announcement_info, option), - (4, self.channels, vec_type), + (4, self.channels, required_vec), }); Ok(()) } @@ -1236,19 +1259,17 @@ impl Readable for NodeInfo { // with zero inbound fees, causing that heuristic to provide little gain. Worse, because it // requires additional complexity and lookups during routing, it ends up being a // performance loss. Thus, we simply ignore the old field here and no longer track it. - let mut _lowest_inbound_channel_fees: Option = None; - let mut announcement_info_wrap: Option = None; - _init_tlv_field_var!(channels, vec_type); - - read_tlv_fields!(reader, { + _init_and_read_tlv_fields!(reader, { (0, _lowest_inbound_channel_fees, option), (2, announcement_info_wrap, upgradable_option), - (4, channels, vec_type), + (4, channels, required_vec), }); + let _: Option = _lowest_inbound_channel_fees; + let announcement_info_wrap: Option = announcement_info_wrap; Ok(NodeInfo { announcement_info: announcement_info_wrap.map(|w| w.0), - channels: _init_tlv_based_struct_field!(channels, vec_type), + channels, }) } } @@ -1403,8 +1424,7 @@ impl NetworkGraph where L::Target: Logger { /// RoutingMessageHandler implementation to call it indirectly. This may be useful to accept /// routing messages from a source using a protocol other than the lightning P2P protocol. pub fn update_node_from_announcement(&self, msg: &msgs::NodeAnnouncement) -> Result<(), LightningError> { - let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.contents.encode()[..])[..]); - secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.signature, &get_pubkey_from_node_id!(msg.contents.node_id, "node_announcement"), "node_announcement"); + verify_node_announcement(msg, &self.secp_ctx)?; self.update_node_from_announcement_intern(&msg.contents, Some(&msg)) } @@ -1467,11 +1487,7 @@ impl NetworkGraph where L::Target: Logger { where U::Target: UtxoLookup, { - let msg_hash = hash_to_message!(&Sha256dHash::hash(&msg.contents.encode()[..])[..]); - secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.node_signature_1, &get_pubkey_from_node_id!(msg.contents.node_id_1, "channel_announcement"), "channel_announcement"); - secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.node_signature_2, &get_pubkey_from_node_id!(msg.contents.node_id_2, "channel_announcement"), "channel_announcement"); - secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.bitcoin_signature_1, &get_pubkey_from_node_id!(msg.contents.bitcoin_key_1, "channel_announcement"), "channel_announcement"); - secp_verify_sig!(self.secp_ctx, &msg_hash, &msg.bitcoin_signature_2, &get_pubkey_from_node_id!(msg.contents.bitcoin_key_2, "channel_announcement"), "channel_announcement"); + verify_channel_announcement(msg, &self.secp_ctx)?; self.update_channel_from_unsigned_announcement_intern(&msg.contents, Some(msg), utxo_lookup) }