- Event::SpendableOutputs { ref outputs } => {
- for outp in outputs {
- match *outp {
- SpendableOutputDescriptor::StaticOutputCounterpartyPayment { ref outpoint, ref output, ref key_derivation_params } => {
- let input = TxIn {
- previous_output: outpoint.into_bitcoin_outpoint(),
- script_sig: Script::new(),
- sequence: 0,
- witness: Vec::new(),
- };
- let outp = TxOut {
- script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
- value: output.value,
- };
- let mut spend_tx = Transaction {
- version: 2,
- lock_time: 0,
- input: vec![input],
- output: vec![outp],
- };
- spend_tx.output[0].value -= (spend_tx.get_weight() + 2 + 1 + 73 + 35 + 3) as u64 / 4; // (Max weight + 3 (to round up)) / 4
- let secp_ctx = Secp256k1::new();
- let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
- let remotepubkey = keys.pubkeys().payment_point;
- let witness_script = Address::p2pkh(&::bitcoin::PublicKey{compressed: true, key: remotepubkey}, Network::Testnet).script_pubkey();
- let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
- let remotesig = secp_ctx.sign(&sighash, &keys.inner.payment_key);
- spend_tx.input[0].witness.push(remotesig.serialize_der().to_vec());
- spend_tx.input[0].witness[0].push(SigHashType::All as u8);
- spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec());
- txn.push(spend_tx);
- },
- SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref per_commitment_point, ref to_self_delay, ref output, ref key_derivation_params, ref revocation_pubkey } => {
- let input = TxIn {
- previous_output: outpoint.into_bitcoin_outpoint(),
- script_sig: Script::new(),
- sequence: *to_self_delay as u32,
- witness: Vec::new(),
- };
- let outp = TxOut {
- script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
- value: output.value,
- };
- let mut spend_tx = Transaction {
- version: 2,
- lock_time: 0,
- input: vec![input],
- output: vec![outp],
- };
- let secp_ctx = Secp256k1::new();
- let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
- if let Ok(delayed_payment_key) = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &keys.inner.delayed_payment_base_key) {
-
- let delayed_payment_pubkey = PublicKey::from_secret_key(&secp_ctx, &delayed_payment_key);
- let witness_script = chan_utils::get_revokeable_redeemscript(revocation_pubkey, *to_self_delay, &delayed_payment_pubkey);
- spend_tx.output[0].value -= (spend_tx.get_weight() + 2 + 1 + 73 + 1 + witness_script.len() + 1 + 3) as u64 / 4; // (Max weight + 3 (to round up)) / 4
- let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
- let local_delayedsig = secp_ctx.sign(&sighash, &delayed_payment_key);
- spend_tx.input[0].witness.push(local_delayedsig.serialize_der().to_vec());
- spend_tx.input[0].witness[0].push(SigHashType::All as u8);
- spend_tx.input[0].witness.push(vec!()); //MINIMALIF
- spend_tx.input[0].witness.push(witness_script.clone().into_bytes());
- } else { panic!() }
- txn.push(spend_tx);
- },
- SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => {
- let secp_ctx = Secp256k1::new();
- let input = TxIn {
- previous_output: outpoint.into_bitcoin_outpoint(),
- script_sig: Script::new(),
- sequence: 0,
- witness: Vec::new(),
- };
- let outp = TxOut {
- script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
- value: output.value,
- };
- let mut spend_tx = Transaction {
- version: 2,
- lock_time: 0,
- input: vec![input],
- output: vec![outp.clone()],
- };
- spend_tx.output[0].value -= (spend_tx.get_weight() + 2 + 1 + 73 + 35 + 3) as u64 / 4; // (Max weight + 3 (to round up)) / 4
- let secret = {
- match ExtendedPrivKey::new_master(Network::Testnet, &$node.node_seed) {
- Ok(master_key) => {
- match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx).expect("key space exhausted")) {
- Ok(key) => key,
- Err(_) => panic!("Your RNG is busted"),
- }
- }
- Err(_) => panic!("Your rng is busted"),
- }
- };
- let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key;
- let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey();
- let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
- let sig = secp_ctx.sign(&sighash, &secret.private_key.key);
- spend_tx.input[0].witness.push(sig.serialize_der().to_vec());
- spend_tx.input[0].witness[0].push(SigHashType::All as u8);
- spend_tx.input[0].witness.push(pubkey.key.serialize().to_vec());
- txn.push(spend_tx);
- },
- }