You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.4 KiB
46 lines
1.4 KiB
#include "withdraw_tx.h"
|
|
#include <bitcoin/pubkey.h>
|
|
#include <bitcoin/script.h>
|
|
#include <ccan/ptrint/ptrint.h>
|
|
#include <common/key_derive.h>
|
|
#include <common/permute_tx.h>
|
|
#include <common/utxo.h>
|
|
#include <string.h>
|
|
#include <wally_bip32.h>
|
|
|
|
struct bitcoin_tx *withdraw_tx(const tal_t *ctx,
|
|
const struct utxo **utxos,
|
|
u8 *destination,
|
|
const u64 withdraw_amount,
|
|
const struct pubkey *changekey,
|
|
const u64 changesat,
|
|
const struct ext_key *bip32_base)
|
|
{
|
|
struct bitcoin_tx *tx =
|
|
bitcoin_tx(ctx, tal_count(utxos), changesat ? 2 : 1);
|
|
for (size_t i = 0; i < tal_count(utxos); i++) {
|
|
tx->input[i].txid = utxos[i]->txid;
|
|
tx->input[i].index = utxos[i]->outnum;
|
|
tx->input[i].amount = tal_dup(tx, u64, &utxos[i]->amount);
|
|
if (utxos[i]->is_p2sh && bip32_base) {
|
|
struct pubkey key;
|
|
bip32_pubkey(bip32_base, &key, utxos[i]->keyindex);
|
|
tx->input[i].script =
|
|
bitcoin_scriptsig_p2sh_p2wpkh(tx, &key);
|
|
}
|
|
}
|
|
tx->output[0].amount = withdraw_amount;
|
|
tx->output[0].script = destination;
|
|
|
|
if (changesat != 0) {
|
|
const void *map[2];
|
|
map[0] = int2ptr(0);
|
|
map[1] = int2ptr(1);
|
|
tx->output[1].script = scriptpubkey_p2wpkh(tx, changekey);
|
|
tx->output[1].amount = changesat;
|
|
permute_outputs(tx->output, tal_count(tx->output), map);
|
|
}
|
|
permute_inputs(tx->input, tal_count(tx->input), (const void **)utxos);
|
|
return tx;
|
|
}
|
|
|
|
|