mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-19 18:11:28 +01:00
b076f40cf3
we can now keep associated witness data with the output in the psbt struct, so we do that.
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
#include "withdraw_tx.h"
|
|
#include <assert.h>
|
|
#include <bitcoin/pubkey.h>
|
|
#include <bitcoin/script.h>
|
|
#include <ccan/ptrint/ptrint.h>
|
|
#include <common/permute_tx.h>
|
|
#include <common/utils.h>
|
|
#include <common/utxo.h>
|
|
#include <string.h>
|
|
#include <wally_bip32.h>
|
|
|
|
struct bitcoin_tx *withdraw_tx(const tal_t *ctx,
|
|
const struct chainparams *chainparams,
|
|
const struct utxo **utxos,
|
|
struct bitcoin_tx_output **outputs,
|
|
const struct pubkey *changekey,
|
|
struct amount_sat change,
|
|
const struct ext_key *bip32_base,
|
|
int *change_outnum, u32 nlocktime)
|
|
{
|
|
struct bitcoin_tx *tx;
|
|
int output_count;
|
|
|
|
tx = tx_spending_utxos(ctx, chainparams, utxos, bip32_base,
|
|
!amount_sat_eq(change, AMOUNT_SAT(0)),
|
|
tal_count(outputs), nlocktime,
|
|
BITCOIN_TX_DEFAULT_SEQUENCE - 1);
|
|
|
|
output_count = bitcoin_tx_add_multi_outputs(tx, outputs);
|
|
assert(output_count == tal_count(outputs));
|
|
|
|
if (!amount_sat_eq(change, AMOUNT_SAT(0))) {
|
|
/* Add one to the output_count, for the change */
|
|
output_count++;
|
|
|
|
const void *map[output_count];
|
|
for (size_t i = 0; i < output_count; i++)
|
|
map[i] = int2ptr(i);
|
|
|
|
bitcoin_tx_add_output(tx, scriptpubkey_p2wpkh(tmpctx, changekey),
|
|
NULL, change);
|
|
|
|
assert(tx->wtx->num_outputs == output_count);
|
|
permute_outputs(tx, NULL, map);
|
|
|
|
/* The change is the last output added, so the last position
|
|
* in the map */
|
|
if (change_outnum)
|
|
*change_outnum = ptr2int(map[output_count - 1]);
|
|
|
|
} else if (change_outnum)
|
|
*change_outnum = -1;
|
|
|
|
permute_inputs(tx, (const void **)utxos);
|
|
|
|
bitcoin_tx_finalize(tx);
|
|
assert(bitcoin_tx_check(tx));
|
|
return tx;
|
|
}
|
|
|