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/*
This file is part of GNU Taler
(C) 2022 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Imports.
*/
import {
j2s,
Logger,
stringifyError as safeStringifyError,
TalerErrorCode,
} from "@gnu-taler/taler-util";
import {
getErrorDetailFromException,
makeErrorDetail,
} from "@gnu-taler/taler-util";
import { TalerCryptoInterfaceR } from "../cryptoImplementation.js";
import {
CryptoWorkerRequestMessage,
CryptoWorkerResponseMessage,
} from "./cryptoWorkerInterface.js";
const logger = new Logger("worker-common.ts");
/**
* Process a crypto worker request by calling into the table
* of supported operations.
*
* Does not throw, but returns an error response instead.
*/
export async function processRequestWithImpl(
reqMsg: CryptoWorkerRequestMessage,
impl: TalerCryptoInterfaceR,
): Promise<CryptoWorkerResponseMessage> {
if (typeof reqMsg !== "object") {
logger.error("request must be an object");
return {
type: "error",
error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
detail: "",
}),
};
}
const id = reqMsg.id;
if (typeof id !== "number") {
const msg = "RPC id must be number";
logger.error(msg);
return {
type: "error",
error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
detail: msg,
}),
};
}
const operation = reqMsg.operation;
if (typeof operation !== "string") {
const msg = "RPC operation must be string";
logger.error(msg);
return {
type: "error",
id,
error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
detail: msg,
}),
};
}
if (!(operation in impl)) {
const msg = `crypto operation '${operation}' not found`;
logger.error(msg);
return {
type: "error",
id,
error: makeErrorDetail(TalerErrorCode.WALLET_CRYPTO_WORKER_BAD_REQUEST, {
detail: msg,
}),
};
}
let responseMsg: CryptoWorkerResponseMessage;
try {
const result = await (impl as any)[operation](impl, reqMsg.req);
responseMsg = { type: "success", result, id };
} catch (e: any) {
logger.error(`error during operation: ${safeStringifyError(e)}`);
responseMsg = {
type: "error",
error: getErrorDetailFromException(e),
id,
};
}
return responseMsg;
}
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