a8f75cca28
We previously treated it as a P2WPKH, which is wrong. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Changelog-Fixed: wallet: fees are much closer to target feerate when doing txprepare/fundchannel.
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
#include "config.h"
|
|
#include <common/utxo.h>
|
|
#include <wire/wire.h>
|
|
|
|
size_t utxo_spend_weight(const struct utxo *utxo, size_t min_witness_weight)
|
|
{
|
|
size_t witness_weight;
|
|
bool p2sh;
|
|
|
|
switch (utxo->utxotype) {
|
|
case UTXO_P2SH_P2WPKH:
|
|
witness_weight = bitcoin_tx_simple_input_witness_weight();
|
|
p2sh = true;
|
|
goto have_weight;
|
|
case UTXO_P2WPKH:
|
|
witness_weight = bitcoin_tx_simple_input_witness_weight();
|
|
p2sh = false;
|
|
goto have_weight;
|
|
case UTXO_P2WSH_FROM_CLOSE:
|
|
/* BOLT #3:
|
|
* #### `to_remote` Output
|
|
*
|
|
* If `option_anchors` applies to the commitment
|
|
* transaction, the `to_remote` output is encumbered by a one
|
|
* block csv lock.
|
|
* <remotepubkey> OP_CHECKSIGVERIFY 1 OP_CHECKSEQUENCEVERIFY
|
|
*
|
|
* The output is spent by an input with `nSequence` field set
|
|
* to `1` and witness: <remote_sig>
|
|
* Otherwise, this output is a simple P2WPKH to `remotepubkey`.
|
|
*/
|
|
if (utxo->close_info->option_anchors)
|
|
witness_weight = 1 + 33 + 3 + 1 + 64;
|
|
else
|
|
witness_weight = 1 + 64;
|
|
p2sh = false;
|
|
goto have_weight;
|
|
case UTXO_P2TR:
|
|
witness_weight = 1 + 64;
|
|
p2sh = false;
|
|
goto have_weight;
|
|
}
|
|
abort();
|
|
|
|
have_weight:
|
|
/* If the min is less than what we'd use for a 'normal' tx,
|
|
* we return the value with the greater added/calculated */
|
|
if (witness_weight < min_witness_weight)
|
|
return bitcoin_tx_input_weight(p2sh,
|
|
min_witness_weight);
|
|
|
|
return bitcoin_tx_input_weight(p2sh, witness_weight);
|
|
}
|
|
|
|
u32 utxo_is_immature(const struct utxo *utxo, u32 blockheight)
|
|
{
|
|
if (utxo->is_in_coinbase) {
|
|
/* We got this from a block, it must have a known
|
|
* blockheight. */
|
|
assert(utxo->blockheight);
|
|
|
|
if (blockheight < *utxo->blockheight + 100)
|
|
return *utxo->blockheight + 99 - blockheight;
|
|
|
|
else
|
|
return 0;
|
|
} else {
|
|
/* Non-coinbase outputs are always mature. */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
const char *utxotype_to_str(enum utxotype utxotype)
|
|
{
|
|
switch (utxotype) {
|
|
case UTXO_P2SH_P2WPKH:
|
|
return "p2sh_p2wpkh";
|
|
case UTXO_P2WPKH:
|
|
return "p2wpkh";
|
|
case UTXO_P2WSH_FROM_CLOSE:
|
|
return "p2wsh_from_close";
|
|
case UTXO_P2TR:
|
|
return "p2tr";
|
|
}
|
|
abort();
|
|
}
|