1 // This file is Copyright its original authors, visible in version control
4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
7 // You may not use this file except in accordance with one or both of these
10 //! Types describing on-chain transactions.
12 use bitcoin::hash_types::Txid;
13 use bitcoin::blockdata::transaction::OutPoint as BitcoinOutPoint;
14 use bitcoin::blockdata::transaction::Transaction;
16 /// Transaction data where each item consists of a transaction reference paired with the index of
17 /// the transaction within a block.
19 /// Useful for passing enumerated transactions from a block, possibly filtered, in order to retain
20 /// the transaction index.
23 /// extern crate bitcoin;
24 /// extern crate lightning;
26 /// use bitcoin::blockdata::block::Block;
27 /// use bitcoin::blockdata::constants::genesis_block;
28 /// use bitcoin::network::constants::Network;
29 /// use lightning::chain::transaction::TransactionData;
31 /// let block = genesis_block(Network::Bitcoin);
32 /// let txdata: Vec<_> = block.txdata.iter().enumerate().collect();
33 /// check_block(&block, &txdata);
35 /// fn check_block(block: &Block, txdata: &TransactionData) {
36 /// assert_eq!(block.txdata.len(), 1);
37 /// assert_eq!(txdata.len(), 1);
39 /// let (index, tx) = txdata[0];
40 /// assert_eq!(index, 0);
41 /// assert_eq!(tx, &block.txdata[0]);
44 pub type TransactionData<'a> = [(usize, &'a Transaction)];
46 /// A reference to a transaction output.
48 /// Differs from bitcoin::blockdata::transaction::OutPoint as the index is a u16 instead of u32
49 /// due to LN's restrictions on index values. Should reduce (possibly) unsafe conversions this way.
50 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
52 /// The referenced transaction's txid.
54 /// The index of the referenced output in its transaction's vout.
59 /// Converts this OutPoint into the OutPoint field as used by rust-bitcoin
61 /// This is not exported to bindings users as the same type is used universally in the C bindings
63 pub fn into_bitcoin_outpoint(self) -> BitcoinOutPoint {
66 vout: self.index as u32,
71 impl core::fmt::Display for OutPoint {
72 fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
73 write!(f, "{}:{}", self.txid, self.index)
77 impl_writeable!(OutPoint, { txid, index });
79 #[derive(Debug, Clone)]
80 pub(crate) struct MaybeSignedTransaction(pub Transaction);
82 impl MaybeSignedTransaction {
83 pub fn is_fully_signed(&self) -> bool {
84 !self.0.input.iter().any(|input| input.witness.is_empty())
90 use crate::chain::transaction::OutPoint;
91 use crate::ln::ChannelId;
93 use bitcoin::blockdata::transaction::Transaction;
94 use bitcoin::consensus::encode;
95 use bitcoin::hashes::hex::FromHex;
98 fn test_channel_id_calculation() {
99 let tx: Transaction = encode::deserialize(&<Vec<u8>>::from_hex("020000000001010e0adef48412e4361325ac1c6e36411299ab09d4f083b9d8ddb55fbc06e1b0c00000000000feffffff0220a1070000000000220020f81d95e040bd0a493e38bae27bff52fe2bb58b93b293eb579c01c31b05c5af1dc072cfee54a3000016001434b1d6211af5551905dc2642d05f5b04d25a8fe80247304402207f570e3f0de50546aad25a872e3df059d277e776dda4269fa0d2cc8c2ee6ec9a022054e7fae5ca94d47534c86705857c24ceea3ad51c69dd6051c5850304880fc43a012103cb11a1bacc223d98d91f1946c6752e358a5eb1a1c983b3e6fb15378f453b76bd00000000").unwrap()[..]).unwrap();
100 assert_eq!(&ChannelId::v1_from_funding_outpoint(OutPoint {
103 }).0[..], &<Vec<u8>>::from_hex("3e88dd7165faf7be58b3c5bb2c9c452aebef682807ea57080f62e6f6e113c25e").unwrap()[..]);
104 assert_eq!(&ChannelId::v1_from_funding_outpoint(OutPoint {
107 }).0[..], &<Vec<u8>>::from_hex("3e88dd7165faf7be58b3c5bb2c9c452aebef682807ea57080f62e6f6e113c25f").unwrap()[..]);