@trezor/transport/lib/thp/receive.js

Low level library facilitating protocol buffers based communication with Trezor devices

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseThpMessage = exports.receiveThpMessage = void 0;
const protobuf_1 = require("@trezor/protobuf");
const protocol_1 = require("@trezor/protocol");
const readWithExpectedHeaders_1 = require("../utils/readWithExpectedHeaders");
const receive_1 = require("../utils/receive");
const result_1 = require("../utils/result");
const receiveThpMessage = async ({ thpState, skipAck, apiRead, apiWrite, signal, logger, }) => {
    if (!thpState) {
        return (0, result_1.error)({ error: 'ThpStateMissing' });
    }
    logger?.debug(`receiveThpMessage start ${thpState.expectedResponses}`);
    try {
        const apiReadWithExpectedHeaders = (0, readWithExpectedHeaders_1.readWithExpectedHeaders)(apiRead, { signal, logger });
        const expectedHeaders = protocol_1.thp.getExpectedHeaders(thpState);
        const message = await (0, receive_1.receive)(() => apiReadWithExpectedHeaders(expectedHeaders), protocol_1.v2);
        if (!message.success) {
            return message;
        }
        const isAckExpected = protocol_1.thp.isAckExpected(thpState.expectedResponses || []);
        if (!skipAck && isAckExpected) {
            const chunk = protocol_1.thp.encodeAck(message.payload.header);
            logger?.debug(`receiveThpMessage send ThpAck`);
            const ackResult = await apiWrite(chunk, signal);
            if (!ackResult.success) {
                return ackResult;
            }
        }
        logger?.debug(`receiveThpMessage done`);
        return message;
    }
    catch (err) {
        logger?.error(`receiveThpMessage error ${err.message}`);
        return (0, result_1.error)({ error: err.code, message: err.message });
    }
};
exports.receiveThpMessage = receiveThpMessage;
const parseThpMessage = ({ decoded, messages, thpState }) => {
    const message = protocol_1.thp.decode(decoded, (messageType, data) => (0, protobuf_1.decodeMessage)(messages, messageType, data), thpState);
    return message;
};
exports.parseThpMessage = parseThpMessage;
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