Function psbt_using_utxos

wallet/reservation.c:246–325

}

static struct wally_psbt *psbt_using_utxos(const tal_t *ctx,
					   struct wallet *wallet,
					   struct utxo **utxos,
					   const struct ext_key *bip32_base,
					   u32 nlocktime,
					   u32 nsequence)
{
	struct pubkey key;
	u8 *scriptSig, *scriptPubkey, *redeemscript;
	struct wally_psbt *psbt;

	psbt = create_psbt(ctx, tal_count(utxos), 0, nlocktime);

	for (size_t i = 0; i < tal_count(utxos); i++) {
		u32 this_nsequence;
		struct bitcoin_tx *tx;

		if (utxos[i]->is_p2sh) {
			bip32_pubkey(bip32_base, &key, utxos[i]->keyindex);
			scriptSig = bitcoin_scriptsig_p2sh_p2wpkh(tmpctx, &key);
			redeemscript = bitcoin_redeem_p2sh_p2wpkh(tmpctx, &key);
			scriptPubkey = scriptpubkey_p2sh(tmpctx, redeemscript);

			/* Make sure we've got the right info! */
			if (utxos[i]->scriptPubkey)
				assert(memeq(utxos[i]->scriptPubkey,
					     tal_bytelen(utxos[i]->scriptPubkey),
					     scriptPubkey, tal_bytelen(scriptPubkey)));
		} else {
			scriptSig = NULL;
			redeemscript = NULL;
			scriptPubkey = utxos[i]->scriptPubkey;
		}

		/* BOLT #3:
		 * #### `to_remote` Output
		 * ...
		 * The output is spent by an input with `nSequence` field
		 * set to `1` and witness:
		 */
		if (utxos[i]->close_info
		    && utxos[i]->close_info->option_anchor_outputs)
			this_nsequence = utxos[i]->close_info->csv;
		else
			this_nsequence = nsequence;

		psbt_append_input(psbt, &utxos[i]->outpoint,
				  this_nsequence, scriptSig,
				  NULL, redeemscript);

		psbt_input_set_wit_utxo(psbt, i, scriptPubkey, utxos[i]->amount);
		if (is_elements(chainparams)) {
			struct amount_asset asset;
			/* FIXME: persist asset tags */
			asset = amount_sat_to_asset(&utxos[i]->amount,
						    chainparams->fee_asset_tag);
			/* FIXME: persist nonces */
			psbt_elements_input_set_asset(psbt,