Function htlc_accepted_call

plugins/keysend.c:342–477

}

static struct command_result *htlc_accepted_call(struct command *cmd,
						 const char *buf,
						 const jsmntok_t *params)
{
	const u8 *rawpayload;
	struct sha256 payment_hash;
	size_t max;
	struct tlv_tlv_payload *payload;
	struct tlv_field *preimage_field = NULL, *desc_field = NULL;
	bigsize_t s;
	struct keysend_in *ki;
	struct out_req *req;
	struct timeabs now = time_now();
	const char *err;
	u64 *allowed;
	size_t err_off;
	u64 err_type;

	err = json_scan(tmpctx, buf, params,
			"{onion:{payload:%},htlc:{payment_hash:%}}",
			JSON_SCAN_TAL(cmd, json_tok_bin_from_hex, &rawpayload),
			JSON_SCAN(json_to_sha256, &payment_hash));
	if (err)
		return htlc_accepted_continue(cmd, NULL);

	max = tal_bytelen(rawpayload);

	s = fromwire_bigsize(&rawpayload, &max);
	if (s != max) {
		return htlc_accepted_continue(cmd, NULL);
	}

	/* Note: This is a magic pointer value, not an actual array */
	allowed = cast_const(u64 *, FROMWIRE_TLV_ANY_TYPE);

	payload = tlv_tlv_payload_new(cmd);
	if (!fromwire_tlv(&rawpayload, &max, tlvs_tlv_tlv_payload, TLVS_ARRAY_SIZE_tlv_tlv_payload,
			  payload, &payload->fields, allowed, &err_off, &err_type)) {
		plugin_log(
		    cmd->plugin, LOG_UNUSUAL, "Malformed TLV payload type %"PRIu64" at off %zu %.*s",
		    err_type, err_off,
		    json_tok_full_len(params),
		    json_tok_full(buf, params));
		return htlc_accepted_continue(cmd, NULL);
	}

	/* Try looking for the field that contains the preimage */
	for (size_t i = 0; i < tal_count(payload->fields); i++) {
		struct tlv_field *field = &payload->fields[i];
		if (field->numtype == PREIMAGE_TLV_TYPE) {
			preimage_field = field;
			continue;
		}

		/* Longest (unknown) text field wins. */
		if (!field->meta
		    && utf8_check(field->value, field->length)
		    && (!desc_field || field->length > desc_field->length))