Function funding_transaction_established

plugins/spender/openchannel.c:616–660

 */

static struct command_result *
funding_transaction_established(struct multifundchannel_command *mfc)
{
	/* Elements requires a fee output.  */
	/* FIXME: v2 on liquid */
	psbt_elements_normalize_fees(mfc->psbt);

	/* Generate the TXID.  */
	mfc->txid = tal(mfc, struct bitcoin_txid);
	psbt_txid(NULL, mfc->psbt, mfc->txid, NULL);
	plugin_log(mfc->cmd->plugin, LOG_DBG,
		   "mfc %"PRIu64": funding tx %s",
		   mfc->id,
		   fmt_bitcoin_txid(tmpctx, mfc->txid));

	/* If all we've got is v2 destinations, we're just waiting
	 * for all of our peers to send us their sigs.
	 * Let's check if we've gotten them yet */
	if (dest_count(mfc, FUND_CHANNEL) == 0)
		return check_sigs_ready(mfc);

	/* For any v1 destination, we need to update the destination
	 * outnum with the correct outnum on the now-known
	 * funding transaction */
	for (size_t i = 0; i < tal_count(mfc->destinations); i++) {
		struct multifundchannel_destination *dest;
		if (is_v2(&mfc->destinations[i]))
			continue;

		dest = &mfc->destinations[i];
		dest->outnum = mfc->psbt->num_outputs;
		for (size_t j = 0; j < mfc->psbt->num_outputs; j++) {
			if (memeq(dest->funding_script,
				  tal_bytelen(dest->funding_script),
				  mfc->psbt->outputs[j].script,
				  mfc->psbt->outputs[j].script_len))
				dest->outnum = j;
		}
		if (dest->outnum == mfc->psbt->num_outputs)
			abort();
		assert(dest->outnum < mfc->psbt->num_outputs);
	}

	return perform_fundchannel_complete(mfc);
}

static struct command_result *
openchannel_update_returned(struct multifundchannel_destination *dest)