67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
#include <bitcoin/script.h>
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#include <common/key_derive.h>
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#include <common/utxo.h>
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#include <wire/wire.h>
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void towire_utxo(u8 **pptr, const struct utxo *utxo)
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{
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/* Is this a unilateral close output and needs the
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* close_info? */
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bool is_unilateral_close = utxo->close_info != NULL;
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towire_bitcoin_txid(pptr, &utxo->txid);
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towire_u32(pptr, utxo->outnum);
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towire_u64(pptr, utxo->amount);
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towire_u32(pptr, utxo->keyindex);
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towire_bool(pptr, utxo->is_p2sh);
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towire_bool(pptr, is_unilateral_close);
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if (is_unilateral_close) {
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towire_u64(pptr, utxo->close_info->channel_id);
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towire_pubkey(pptr, &utxo->close_info->peer_id);
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towire_pubkey(pptr, &utxo->close_info->commitment_point);
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}
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}
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struct utxo *fromwire_utxo(const tal_t *ctx, const u8 **ptr, size_t *max)
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{
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struct utxo *utxo = tal(ctx, struct utxo);
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fromwire_bitcoin_txid(ptr, max, &utxo->txid);
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utxo->outnum = fromwire_u32(ptr, max);
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utxo->amount = fromwire_u64(ptr, max);
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utxo->keyindex = fromwire_u32(ptr, max);
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utxo->is_p2sh = fromwire_bool(ptr, max);
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if (fromwire_bool(ptr, max)) {
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utxo->close_info = tal(utxo, struct unilateral_close_info);
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utxo->close_info->channel_id = fromwire_u64(ptr, max);
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fromwire_pubkey(ptr, max, &utxo->close_info->peer_id);
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fromwire_pubkey(ptr, max, &utxo->close_info->commitment_point);
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} else {
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utxo->close_info = NULL;
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}
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return utxo;
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}
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struct bitcoin_tx *tx_spending_utxos(const tal_t *ctx,
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const struct utxo **utxos,
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const struct ext_key *bip32_base,
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bool add_change_output)
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{
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struct bitcoin_tx *tx =
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bitcoin_tx(ctx, tal_count(utxos), add_change_output ? 2 : 1);
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for (size_t i = 0; i < tal_count(utxos); i++) {
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tx->input[i].txid = utxos[i]->txid;
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tx->input[i].index = utxos[i]->outnum;
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tx->input[i].amount = tal_dup(tx, u64, &utxos[i]->amount);
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if (utxos[i]->is_p2sh && bip32_base) {
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struct pubkey key;
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bip32_pubkey(bip32_base, &key, utxos[i]->keyindex);
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tx->input[i].script =
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bitcoin_scriptsig_p2sh_p2wpkh(tx, &key);
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}
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}
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return tx;
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}
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