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/*
This file is part of GNU Taler
(C) 2020 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 {
TalerCorebankApiClient,
Duration,
j2s,
Logger,
NotificationType,
TransactionMajorState,
TransactionMinorState,
TransactionType,
encodeCrock,
} from "@gnu-taler/taler-util";
import { createPlatformHttpLib } from "@gnu-taler/taler-util/http";
import { WalletApiOperation } from "@gnu-taler/taler-wallet-core";
import * as http from "node:http";
import { CoinConfig, defaultCoinConfig } from "../harness/denomStructures.js";
import {
BankService,
ExchangeService,
generateRandomPayto,
GlobalTestState,
MerchantService,
setupDb,
WalletClient,
WalletService,
} from "../harness/harness.js";
import { EnvOptions, SimpleTestEnvironmentNg } from "../harness/helpers.js";
const logger = new Logger("test-kyc.ts");
export async function createKycTestkudosEnvironment(
t: GlobalTestState,
coinConfig: CoinConfig[] = defaultCoinConfig.map((x) => x("TESTKUDOS")),
opts: EnvOptions = {},
): Promise<SimpleTestEnvironmentNg> {
const db = await setupDb(t);
const bank = await BankService.create(t, {
allowRegistrations: true,
currency: "TESTKUDOS",
database: db.connStr,
httpPort: 8082,
});
const exchange = ExchangeService.create(t, {
name: "testexchange-1",
currency: "TESTKUDOS",
httpPort: 8081,
database: db.connStr,
});
const merchant = await MerchantService.create(t, {
name: "testmerchant-1",
currency: "TESTKUDOS",
httpPort: 8083,
database: db.connStr,
});
const exchangeBankAccount = await bank.createExchangeAccount(
"myexchange",
"x",
);
exchange.addBankAccount("1", exchangeBankAccount);
bank.setSuggestedExchange(exchange, exchangeBankAccount.accountPaytoUri);
await bank.start();
await bank.pingUntilAvailable();
const ageMaskSpec = opts.ageMaskSpec;
if (ageMaskSpec) {
exchange.enableAgeRestrictions(ageMaskSpec);
// Enable age restriction for all coins.
exchange.addCoinConfigList(
coinConfig.map((x) => ({
...x,
name: `${x.name}-age`,
ageRestricted: true,
})),
);
// For mixed age restrictions, we also offer coins without age restrictions
if (opts.mixedAgeRestriction) {
exchange.addCoinConfigList(
coinConfig.map((x) => ({ ...x, ageRestricted: false })),
);
}
} else {
exchange.addCoinConfigList(coinConfig);
}
await exchange.modifyConfig(async (config) => {
const myprov = "kyc-provider-myprov";
config.setString(myprov, "cost", "0");
config.setString(myprov, "logic", "oauth2");
config.setString(myprov, "provided_checks", "dummy1");
config.setString(myprov, "user_type", "individual");
config.setString(myprov, "kyc_oauth2_validity", "forever");
config.setString(
myprov,
"kyc_oauth2_token_url",
"http://localhost:6666/oauth/v2/token",
);
config.setString(
myprov,
"kyc_oauth2_authorize_url",
"http://localhost:6666/oauth/v2/login",
);
config.setString(
myprov,
"kyc_oauth2_info_url",
"http://localhost:6666/oauth/v2/info",
);
config.setString(
myprov,
"kyc_oauth2_converter_helper",
"taler-exchange-kyc-oauth2-test-converter.sh",
);
config.setString(myprov, "kyc_oauth2_client_id", "taler-exchange");
config.setString(myprov, "kyc_oauth2_client_secret", "exchange-secret");
config.setString(myprov, "kyc_oauth2_post_url", "https://taler.net");
config.setString(
"kyc-legitimization-withdraw1",
"operation_type",
"withdraw",
);
config.setString(
"kyc-legitimization-withdraw1",
"required_checks",
"dummy1",
);
config.setString("kyc-legitimization-withdraw1", "timeframe", "1d");
config.setString(
"kyc-legitimization-withdraw1",
"threshold",
"TESTKUDOS:5",
);
});
await exchange.start();
await exchange.pingUntilAvailable();
merchant.addExchange(exchange);
await merchant.start();
await merchant.pingUntilAvailable();
await merchant.addInstanceWithWireAccount({
id: "default",
name: "Default Instance",
paytoUris: [generateRandomPayto("merchant-default")],
defaultWireTransferDelay: Duration.toTalerProtocolDuration(
Duration.fromSpec({ minutes: 1 }),
),
});
await merchant.addInstanceWithWireAccount({
id: "minst1",
name: "minst1",
paytoUris: [generateRandomPayto("minst1")],
defaultWireTransferDelay: Duration.toTalerProtocolDuration(
Duration.fromSpec({ minutes: 1 }),
),
});
const walletService = new WalletService(t, {
name: "wallet",
useInMemoryDb: true,
});
await walletService.start();
await walletService.pingUntilAvailable();
const walletClient = new WalletClient({
unixPath: walletService.socketPath,
onNotification(n) {
console.log("got notification", n);
},
});
await walletClient.connect();
await walletClient.client.call(WalletApiOperation.InitWallet, {
skipDefaults: true,
});
console.log("setup done!");
return {
commonDb: db,
exchange,
merchant,
walletClient,
walletService,
bank,
exchangeBankAccount,
};
}
interface TestfakeKycService {
stop: () => void;
}
function splitInTwoAt(s: string, separator: string): [string, string] {
const idx = s.indexOf(separator);
if (idx === -1) {
return [s, ""];
}
return [s.slice(0, idx), s.slice(idx + 1)];
}
/**
* Testfake for the kyc service that the exchange talks to.
*/
async function runTestfakeKycService(): Promise<TestfakeKycService> {
const server = http.createServer((req, res) => {
const requestUrl = req.url!;
logger.info(`kyc: got ${req.method} request, ${requestUrl}`);
const [path, query] = splitInTwoAt(requestUrl, "?");
const qp = new URLSearchParams(query);
if (path === "/oauth/v2/login") {
// Usually this would render some HTML page for the user to log in,
// but we return JSON here.
const redirUriUnparsed = qp.get("redirect_uri");
if (!redirUriUnparsed) {
throw Error("missing redirect_url");
}
const state = qp.get("state");
if (!state) {
throw Error("missing state");
}
const redirUri = new URL(redirUriUnparsed);
redirUri.searchParams.set("code", "code_is_ok");
redirUri.searchParams.set("state", state);
res.writeHead(200, { "Content-Type": "application/json" });
res.end(
JSON.stringify({
redirect_uri: redirUri.href,
}),
);
} else if (path === "/oauth/v2/token") {
let reqBody = "";
req.on("data", (x) => {
reqBody += x;
});
req.on("end", () => {
logger.info("login request body:", reqBody);
res.writeHead(200, { "Content-Type": "application/json" });
// Normally, the access_token would also include which user we're trying
// to get info about, but we (for now) skip it in this test.
res.end(
JSON.stringify({
access_token: "exchange_access_token",
token_type: "Bearer",
}),
);
});
} else if (path === "/oauth/v2/info") {
logger.info("authorization header:", req.headers.authorization);
res.writeHead(200, { "Content-Type": "application/json" });
res.end(
JSON.stringify({
status: "success",
data: {
id: "foobar",
},
}),
);
} else {
res.writeHead(400, { "Content-Type": "application/json" });
res.end(JSON.stringify({ code: 1, message: "bad request" }));
}
});
await new Promise<void>((resolve, reject) => {
server.listen(6666, () => resolve());
});
return {
stop() {
server.close();
},
};
}
export async function runKycTest(t: GlobalTestState) {
// Set up test environment
const { walletClient, bank, exchange, merchant } =
await createKycTestkudosEnvironment(t);
const kycServer = await runTestfakeKycService();
// Withdraw digital cash into the wallet.
const bankClient = new TalerCorebankApiClient(bank.corebankApiBaseUrl);
const amount = "TESTKUDOS:20";
const user = await bankClient.createRandomBankUser();
const wop = await bankClient.createWithdrawalOperation(user.username, amount);
// Hand it to the wallet
await walletClient.client.call(
WalletApiOperation.GetWithdrawalDetailsForUri,
{
talerWithdrawUri: wop.taler_withdraw_uri,
},
);
// Withdraw
const acceptResp = await walletClient.client.call(
WalletApiOperation.AcceptBankIntegratedWithdrawal,
{
exchangeBaseUrl: exchange.baseUrl,
talerWithdrawUri: wop.taler_withdraw_uri,
},
);
const withdrawalTxId = acceptResp.transactionId;
// Confirm it
await bankClient.confirmWithdrawalOperation(user.username, {
withdrawalOperationId: wop.withdrawal_id,
});
const kycNotificationCond = walletClient.waitForNotificationCond((x) => {
if (
x.type === NotificationType.TransactionStateTransition &&
x.transactionId === withdrawalTxId &&
x.newTxState.major === TransactionMajorState.Pending &&
x.newTxState.minor === TransactionMinorState.KycRequired
) {
return x;
}
return false;
});
const withdrawalDoneCond = walletClient.waitForNotificationCond(
(x) =>
x.type === NotificationType.TransactionStateTransition &&
x.transactionId === withdrawalTxId &&
x.newTxState.major === TransactionMajorState.Done,
);
const kycNotif = await kycNotificationCond;
logger.info("got kyc notification:", j2s(kycNotif));
const txState = await walletClient.client.call(
WalletApiOperation.GetTransactionById,
{
transactionId: withdrawalTxId,
},
);
t.assertDeepEqual(txState.type, TransactionType.Withdrawal);
const kycUrl = txState.kycUrl;
t.assertTrue(!!kycUrl);
logger.info(`kyc URL is ${kycUrl}`);
// We now simulate the user interacting with the KYC service,
// which would usually done in the browser.
const httpLib = createPlatformHttpLib({
enableThrottling: false,
});
const kycServerResp = await httpLib.fetch(kycUrl);
const kycLoginResp = await kycServerResp.json();
logger.info(`kyc server resp: ${j2s(kycLoginResp)}`);
const kycProofUrl = kycLoginResp.redirect_uri;
// We need to "visit" the KYC proof URL at least once to trigger the exchange
// asking for the KYC status.
const proofHttpResp = await httpLib.fetch(kycProofUrl);
logger.info(`proof resp status ${proofHttpResp.status}`);
logger.info(`resp headers ${j2s(proofHttpResp.headers.toJSON())}`);
if (
!(proofHttpResp.status >= 200 && proofHttpResp.status <= 299) &&
proofHttpResp.status !== 303
) {
logger.error("kyc proof failed");
logger.info(await proofHttpResp.text());
t.assertTrue(false);
}
// Now that KYC is done, withdrawal should finally succeed.
await withdrawalDoneCond;
kycServer.stop();
}
runKycTest.suites = ["wallet"];
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