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elementsd: use the elements version of a 'witness utxo' 

Elements requires the witness utxo to include the asset and value info,
in order for the signing hash to be constructed correctly

Changelog-Fixed: elementsd: PSBTs include correct witness_utxo struct for elements transactions
This commit is contained in:
niftynei 2020-09-09 16:26:47 -05:00 committed by Rusty Russell
parent bd811fbd1a
commit 24578c7fea
1 changed files with 22 additions and 6 deletions
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28
bitcoin/psbt.c
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@ -257,13 +257,29 @@ void psbt_input_set_wit_utxo(struct wally_psbt *psbt, size_t in,
assert(in < psbt->num_inputs);
assert(tal_bytelen(scriptPubkey) > 0);
wally_err = wally_tx_output_init(amt.satoshis, /* Raw: type conv */
scriptPubkey,
tal_bytelen(scriptPubkey),
&tx_out);
if (is_elements(chainparams)) {
u8 value[9];
wally_err =
wally_tx_confidential_value_from_satoshi(amt.satoshis, /* Raw: wally API */
value,
sizeof(value));
assert(wally_err == WALLY_OK);
wally_err =
wally_tx_elements_output_init(scriptPubkey,
tal_bytelen(scriptPubkey),
chainparams->fee_asset_tag,
ELEMENTS_ASSET_LEN,
value, sizeof(value),
NULL, 0, NULL, 0,
NULL, 0, &tx_out);
} else
wally_err = wally_tx_output_init(amt.satoshis, /* Raw: type conv */
scriptPubkey,
tal_bytelen(scriptPubkey),
&tx_out);
assert(wally_err == WALLY_OK);
wally_err = wally_psbt_input_set_witness_utxo(&psbt->inputs[in],
&tx_out);
wally_err = wally_psbt_input_set_witness_utxo(&psbt->inputs[in], &tx_out);
assert(wally_err == WALLY_OK);
}