Function htlc_accepted_invoice_created

plugins/keysend.c:264–326

}

static struct command_result *
htlc_accepted_invoice_created(struct command *cmd, const char *buf,
			      const jsmntok_t *result,
			      struct keysend_in *ki)
{
	struct tlv_field field;

	/* Remove all unknown fields: complain about unused even ones!
	 * (Keysend is not a design, it's a kludge by people who
	 * didn't read the spec, and Just Made Something Work). */
	for (size_t i = 0; i < tal_count(ki->payload->fields); i++) {
		/* Odd fields are fine, leave them. */
		if (ki->payload->fields[i].numtype % 2)
			continue;
		/* Same with known fields */
		if (ki->payload->fields[i].meta)
			continue;
		/* Complain about it, at least. */
		if (ki->preimage_field != &ki->payload->fields[i]) {
			plugin_log(cmd->plugin, LOG_INFORM,
				   "Keysend payment uses illegal even field %"
				   PRIu64 ": stripping",
				   ki->payload->fields[i].numtype);
		}
		tal_arr_remove(&ki->payload->fields, i);
		i--;
	}

	/* Now we can fill in the payment secret, from invoice. */
	ki->payload->payment_data = tal(ki->payload,
					struct tlv_tlv_payload_payment_data);
	json_to_secret(buf, json_get_member(buf, result, "payment_secret"),
		       &ki->payload->payment_data->payment_secret);

	/* We checked that amt_to_forward was non-NULL before */
	ki->payload->payment_data->total_msat = *ki->payload->amt_to_forward;

	/* In order to put payment_data into ->fields, I'd normally re-serialize,
	 * but we can have completely unknown fields.  So insert manually. */
	/* BOLT #4:
	 *     1. type: 8 (`payment_data`)
	 *     2. data:
	 *         * [`32*byte`:`payment_secret`]
	 *         * [`tu64`:`total_msat`]
	 */
	field.numtype = 8;
	field.value = tal_arr(ki->payload, u8, 0);
	towire_secret(&field.value, &ki->payload->payment_data->payment_secret);
	towire_tu64(&field.value, ki->payload->payment_data->total_msat);
	field.length = tal_bytelen(field.value);
	tal_arr_expand(&ki->payload->fields, field);

	asort(ki->payload->fields, tal_count(ki->payload->fields),
	      tlvfield_cmp, NULL);

	/* Finally we can resolve the payment with the preimage. */
	plugin_log(cmd->plugin, LOG_INFORM,
		   "Resolving incoming HTLC with preimage for payment_hash %s "