Function linearize_output

common/psbt_open.c:96–130

}

static const u8 *linearize_output(const tal_t *ctx,
				  const struct wally_psbt_output *out,
				  const struct wally_tx_output *tx_out)
{
	struct wally_psbt *psbt = create_psbt(NULL, 1, 1, 0);
	size_t byte_len;
	struct bitcoin_outpoint outpoint;

	/* Add a 'fake' input so this will linearize the tx */
	memset(&outpoint, 0, sizeof(outpoint));
	psbt_append_input(psbt, &outpoint, 0, NULL, NULL, NULL);

	tal_wally_start();
	if (wally_tx_add_output(psbt->tx, tx_out) != WALLY_OK)
		abort();
	tal_wally_end(psbt->tx);

	psbt->outputs[0] = *out;
	psbt->num_outputs++;
	/* Sort the outputs, so serializing them is ok */
	wally_map_sort(&psbt->outputs[0].unknowns, 0);

	/* We don't care if the keypaths change */
	psbt->outputs[0].keypaths.num_items = 0;
	/* And you can add scripts, no problem */
	psbt->outputs[0].witness_script_len = 0;
	psbt->outputs[0].redeem_script_len = 0;

	const u8 *bytes = psbt_get_bytes(ctx, psbt, &byte_len);

	/* Hide the outputs we added, so it doesn't get freed */
	psbt->num_outputs--;
	tal_free(psbt);
	return bytes;
}

static bool input_identical(const struct wally_psbt *a,
			    size_t a_index,