Function json_openchannel_bump

lightningd/dual_open_control.c:2255–2392

}

static struct command_result *
json_openchannel_bump(struct command *cmd,
		      const char *buffer,
		      const jsmntok_t *obj UNNEEDED,
		      const jsmntok_t *params)
{
	struct channel_id *cid;
	struct channel *channel;
	struct amount_sat *amount, psbt_val;
	struct wally_psbt *psbt;
	u32 last_feerate_perkw, next_feerate_min, *feerate_per_kw_funding;
	struct open_attempt *oa;

	if (!param(cmd, buffer, params,
		   p_req("channel_id", param_channel_id, &cid),
		   p_req("amount", param_sat, &amount),
		   p_req("initialpsbt", param_psbt, &psbt),
		   p_opt("funding_feerate", param_feerate,
			 &feerate_per_kw_funding),
		   NULL))
		return command_param_failed();

	psbt_val = AMOUNT_SAT(0);
	for (size_t i = 0; i < psbt->num_inputs; i++) {
		struct amount_sat in_amt = psbt_input_get_amount(psbt, i);
		if (!amount_sat_add(&psbt_val, psbt_val, in_amt))
			return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
					    "Overflow in adding PSBT input"
					    " values. %s",
					    type_to_string(tmpctx,
							   struct wally_psbt,
							   psbt));
	}

	/* If they don't pass in at least enough in the PSBT to cover
	 * their amount, nope */
	if (!amount_sat_greater(psbt_val, *amount))
		return command_fail(cmd, FUND_CANNOT_AFFORD,
				    "Provided PSBT cannot afford funding of "
				    "amount %s. %s",
				    type_to_string(tmpctx,
						   struct amount_sat,
						   amount),
				    type_to_string(tmpctx,
						   struct wally_psbt,
						   psbt));

	if (!topology_synced(cmd->ld->topology)) {
		return command_fail(cmd, FUNDING_STILL_SYNCING_BITCOIN,
				    "Still syncing with bitcoin network");
	}

	/* Are we in a state where we can attempt an RBF? */
	channel = channel_by_cid(cmd->ld, cid);
	if (!channel)
		return command_fail(cmd, FUNDING_UNKNOWN_CHANNEL,
				    "Unknown channel %s",
				    type_to_string(tmpctx, struct channel_id,