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|
/*
This file is part of GNU Taler
(C) 2022 GNUnet e.V.
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 {
AbsoluteTime,
AcceptPeerPullPaymentRequest,
AcceptPeerPushPaymentRequest,
AgeCommitmentProof,
AmountJson,
AmountLike,
Amounts,
AmountString,
buildCodecForObject,
CheckPeerPullPaymentRequest,
CheckPeerPullPaymentResponse,
CheckPeerPushPaymentRequest,
CheckPeerPushPaymentResponse,
Codec,
codecForAmountString,
codecForAny,
codecForExchangeGetContractResponse,
CoinPublicKey,
constructPayPullUri,
constructPayPushUri,
ContractTermsUtil,
decodeCrock,
Duration,
eddsaGetPublic,
encodeCrock,
ExchangePurseDeposits,
ExchangePurseMergeRequest,
ExchangeReservePurseRequest,
getRandomBytes,
InitiatePeerPullPaymentRequest,
InitiatePeerPullPaymentResponse,
InitiatePeerPushPaymentRequest,
InitiatePeerPushPaymentResponse,
j2s,
Logger,
parsePayPullUri,
parsePayPushUri,
RefreshReason,
strcmp,
TalerProtocolTimestamp,
UnblindedSignature,
WalletAccountMergeFlags,
} from "@gnu-taler/taler-util";
import {
CoinStatus,
MergeReserveInfo,
ReserveRecordStatus,
WalletStoresV1,
WithdrawalRecordType,
} from "../db.js";
import { readSuccessResponseJsonOrThrow } from "../util/http.js";
import { InternalWalletState } from "../internal-wallet-state.js";
import { checkDbInvariant } from "../util/invariants.js";
import { internalCreateWithdrawalGroup } from "./withdraw.js";
import { GetReadOnlyAccess } from "../util/query.js";
import { createRefreshGroup } from "./refresh.js";
import { updateExchangeFromUrl } from "./exchanges.js";
const logger = new Logger("operations/peer-to-peer.ts");
export interface PeerCoinSelection {
exchangeBaseUrl: string;
/**
* Info of Coins that were selected.
*/
coins: {
coinPub: string;
coinPriv: string;
contribution: AmountString;
denomPubHash: string;
denomSig: UnblindedSignature;
ageCommitmentProof: AgeCommitmentProof | undefined;
}[];
/**
* How much of the deposit fees is the customer paying?
*/
depositFees: AmountJson;
}
interface CoinInfo {
/**
* Public key of the coin.
*/
coinPub: string;
coinPriv: string;
/**
* Deposit fee for the coin.
*/
feeDeposit: AmountJson;
value: AmountJson;
denomPubHash: string;
denomSig: UnblindedSignature;
ageCommitmentProof: AgeCommitmentProof | undefined;
}
export async function selectPeerCoins(
ws: InternalWalletState,
tx: GetReadOnlyAccess<{
exchanges: typeof WalletStoresV1.exchanges;
denominations: typeof WalletStoresV1.denominations;
coins: typeof WalletStoresV1.coins;
}>,
instructedAmount: AmountJson,
): Promise<PeerCoinSelection | undefined> {
const exchanges = await tx.exchanges.iter().toArray();
for (const exch of exchanges) {
if (exch.detailsPointer?.currency !== instructedAmount.currency) {
continue;
}
const coins = (
await tx.coins.indexes.byBaseUrl.getAll(exch.baseUrl)
).filter((x) => x.status === CoinStatus.Fresh);
const coinInfos: CoinInfo[] = [];
for (const coin of coins) {
const denom = await ws.getDenomInfo(
ws,
tx,
coin.exchangeBaseUrl,
coin.denomPubHash,
);
if (!denom) {
throw Error("denom not found");
}
coinInfos.push({
coinPub: coin.coinPub,
feeDeposit: denom.feeDeposit,
value: denom.value,
denomPubHash: denom.denomPubHash,
coinPriv: coin.coinPriv,
denomSig: coin.denomSig,
ageCommitmentProof: coin.ageCommitmentProof,
});
}
if (coinInfos.length === 0) {
continue;
}
coinInfos.sort(
(o1, o2) =>
-Amounts.cmp(o1.value, o2.value) ||
strcmp(o1.denomPubHash, o2.denomPubHash),
);
let amountAcc = Amounts.getZero(instructedAmount.currency);
let depositFeesAcc = Amounts.getZero(instructedAmount.currency);
const resCoins: {
coinPub: string;
coinPriv: string;
contribution: AmountString;
denomPubHash: string;
denomSig: UnblindedSignature;
ageCommitmentProof: AgeCommitmentProof | undefined;
}[] = [];
for (const coin of coinInfos) {
if (Amounts.cmp(amountAcc, instructedAmount) >= 0) {
const res: PeerCoinSelection = {
exchangeBaseUrl: exch.baseUrl,
coins: resCoins,
depositFees: depositFeesAcc,
};
return res;
}
const gap = Amounts.add(
coin.feeDeposit,
Amounts.sub(instructedAmount, amountAcc).amount,
).amount;
const contrib = Amounts.min(gap, coin.value);
amountAcc = Amounts.add(
amountAcc,
Amounts.sub(contrib, coin.feeDeposit).amount,
).amount;
depositFeesAcc = Amounts.add(depositFeesAcc, coin.feeDeposit).amount;
resCoins.push({
coinPriv: coin.coinPriv,
coinPub: coin.coinPub,
contribution: Amounts.stringify(contrib),
denomPubHash: coin.denomPubHash,
denomSig: coin.denomSig,
ageCommitmentProof: coin.ageCommitmentProof,
});
}
continue;
}
return undefined;
}
export async function initiatePeerToPeerPush(
ws: InternalWalletState,
req: InitiatePeerPushPaymentRequest,
): Promise<InitiatePeerPushPaymentResponse> {
// FIXME: actually create a record for retries here!
const instructedAmount = Amounts.parseOrThrow(req.amount);
const pursePair = await ws.cryptoApi.createEddsaKeypair({});
const mergePair = await ws.cryptoApi.createEddsaKeypair({});
const purseExpiration: TalerProtocolTimestamp = AbsoluteTime.toTimestamp(
AbsoluteTime.addDuration(
AbsoluteTime.now(),
Duration.fromSpec({ days: 2 }),
),
);
const contractTerms = {
...req.partialContractTerms,
purse_expiration: purseExpiration,
amount: req.amount,
};
const hContractTerms = ContractTermsUtil.hashContractTerms(contractTerms);
const econtractResp = await ws.cryptoApi.encryptContractForMerge({
contractTerms,
mergePriv: mergePair.priv,
pursePriv: pursePair.priv,
pursePub: pursePair.pub,
});
const coinSelRes: PeerCoinSelection | undefined = await ws.db
.mktx((x) => ({
exchanges: x.exchanges,
coins: x.coins,
denominations: x.denominations,
refreshGroups: x.refreshGroups,
peerPushPaymentInitiations: x.peerPushPaymentInitiations,
}))
.runReadWrite(async (tx) => {
const sel = await selectPeerCoins(ws, tx, instructedAmount);
if (!sel) {
return undefined;
}
const pubs: CoinPublicKey[] = [];
for (const c of sel.coins) {
const coin = await tx.coins.get(c.coinPub);
checkDbInvariant(!!coin);
coin.currentAmount = Amounts.sub(
coin.currentAmount,
Amounts.parseOrThrow(c.contribution),
).amount;
coin.status = CoinStatus.Dormant;
await tx.coins.put(coin);
}
await tx.peerPushPaymentInitiations.add({
amount: Amounts.stringify(instructedAmount),
contractPriv: econtractResp.contractPriv,
contractTerms,
exchangeBaseUrl: sel.exchangeBaseUrl,
mergePriv: mergePair.priv,
mergePub: mergePair.pub,
// FIXME: only set this later!
purseCreated: true,
purseExpiration: purseExpiration,
pursePriv: pursePair.priv,
pursePub: pursePair.pub,
timestampCreated: TalerProtocolTimestamp.now(),
});
await createRefreshGroup(ws, tx, pubs, RefreshReason.Pay);
return sel;
});
logger.info(`selected p2p coins (push): ${j2s(coinSelRes)}`);
if (!coinSelRes) {
throw Error("insufficient balance");
}
const purseSigResp = await ws.cryptoApi.signPurseCreation({
hContractTerms,
mergePub: mergePair.pub,
minAge: 0,
purseAmount: Amounts.stringify(instructedAmount),
purseExpiration,
pursePriv: pursePair.priv,
});
const depositSigsResp = await ws.cryptoApi.signPurseDeposits({
exchangeBaseUrl: coinSelRes.exchangeBaseUrl,
pursePub: pursePair.pub,
coins: coinSelRes.coins,
});
const createPurseUrl = new URL(
`purses/${pursePair.pub}/create`,
coinSelRes.exchangeBaseUrl,
);
const httpResp = await ws.http.postJson(createPurseUrl.href, {
amount: Amounts.stringify(instructedAmount),
merge_pub: mergePair.pub,
purse_sig: purseSigResp.sig,
h_contract_terms: hContractTerms,
purse_expiration: purseExpiration,
deposits: depositSigsResp.deposits,
min_age: 0,
econtract: econtractResp.econtract,
});
const resp = await httpResp.json();
logger.info(`resp: ${j2s(resp)}`);
if (httpResp.status !== 200) {
throw Error("got error response from exchange");
}
return {
contractPriv: econtractResp.contractPriv,
mergePriv: mergePair.priv,
pursePub: pursePair.pub,
exchangeBaseUrl: coinSelRes.exchangeBaseUrl,
talerUri: constructPayPushUri({
exchangeBaseUrl: coinSelRes.exchangeBaseUrl,
contractPriv: econtractResp.contractPriv,
}),
};
}
interface ExchangePurseStatus {
balance: AmountString;
}
export const codecForExchangePurseStatus = (): Codec<ExchangePurseStatus> =>
buildCodecForObject<ExchangePurseStatus>()
.property("balance", codecForAmountString())
.build("ExchangePurseStatus");
export async function checkPeerPushPayment(
ws: InternalWalletState,
req: CheckPeerPushPaymentRequest,
): Promise<CheckPeerPushPaymentResponse> {
// FIXME: Check if existing record exists!
const uri = parsePayPushUri(req.talerUri);
if (!uri) {
throw Error("got invalid taler://pay-push URI");
}
const exchangeBaseUrl = uri.exchangeBaseUrl;
await updateExchangeFromUrl(ws, exchangeBaseUrl);
const contractPriv = uri.contractPriv;
const contractPub = encodeCrock(eddsaGetPublic(decodeCrock(contractPriv)));
const getContractUrl = new URL(`contracts/${contractPub}`, exchangeBaseUrl);
const contractHttpResp = await ws.http.get(getContractUrl.href);
const contractResp = await readSuccessResponseJsonOrThrow(
contractHttpResp,
codecForExchangeGetContractResponse(),
);
const pursePub = contractResp.purse_pub;
const dec = await ws.cryptoApi.decryptContractForMerge({
ciphertext: contractResp.econtract,
contractPriv: contractPriv,
pursePub: pursePub,
});
const getPurseUrl = new URL(`purses/${pursePub}/deposit`, exchangeBaseUrl);
const purseHttpResp = await ws.http.get(getPurseUrl.href);
const purseStatus = await readSuccessResponseJsonOrThrow(
purseHttpResp,
codecForExchangePurseStatus(),
);
const peerPushPaymentIncomingId = encodeCrock(getRandomBytes(32));
await ws.db
.mktx((x) => ({
peerPushPaymentIncoming: x.peerPushPaymentIncoming,
}))
.runReadWrite(async (tx) => {
await tx.peerPushPaymentIncoming.add({
peerPushPaymentIncomingId,
contractPriv: contractPriv,
exchangeBaseUrl: exchangeBaseUrl,
mergePriv: dec.mergePriv,
pursePub: pursePub,
timestamp: TalerProtocolTimestamp.now(),
contractTerms: dec.contractTerms,
});
});
return {
amount: purseStatus.balance,
contractTerms: dec.contractTerms,
peerPushPaymentIncomingId,
};
}
export function talerPaytoFromExchangeReserve(
exchangeBaseUrl: string,
reservePub: string,
): string {
const url = new URL(exchangeBaseUrl);
let proto: string;
if (url.protocol === "http:") {
proto = "taler-reserve-http";
} else if (url.protocol === "https:") {
proto = "taler-reserve";
} else {
throw Error(`unsupported exchange base URL protocol (${url.protocol})`);
}
let path = url.pathname;
if (!path.endsWith("/")) {
path = path + "/";
}
return `payto://${proto}/${url.host}${url.pathname}${reservePub}`;
}
async function getMergeReserveInfo(
ws: InternalWalletState,
req: {
exchangeBaseUrl: string;
},
): Promise<MergeReserveInfo> {
// We have to eagerly create the key pair outside of the transaction,
// due to the async crypto API.
const newReservePair = await ws.cryptoApi.createEddsaKeypair({});
const mergeReserveInfo: MergeReserveInfo = await ws.db
.mktx((x) => ({
exchanges: x.exchanges,
withdrawalGroups: x.withdrawalGroups,
}))
.runReadWrite(async (tx) => {
const ex = await tx.exchanges.get(req.exchangeBaseUrl);
checkDbInvariant(!!ex);
if (ex.currentMergeReserveInfo) {
return ex.currentMergeReserveInfo;
}
await tx.exchanges.put(ex);
ex.currentMergeReserveInfo = {
reservePriv: newReservePair.priv,
reservePub: newReservePair.pub,
};
return ex.currentMergeReserveInfo;
});
return mergeReserveInfo;
}
export async function acceptPeerPushPayment(
ws: InternalWalletState,
req: AcceptPeerPushPaymentRequest,
): Promise<void> {
const peerInc = await ws.db
.mktx((x) => ({ peerPushPaymentIncoming: x.peerPushPaymentIncoming }))
.runReadOnly(async (tx) => {
return tx.peerPushPaymentIncoming.get(req.peerPushPaymentIncomingId);
});
if (!peerInc) {
throw Error(
`can't accept unknown incoming p2p push payment (${req.peerPushPaymentIncomingId})`,
);
}
await updateExchangeFromUrl(ws, peerInc.exchangeBaseUrl);
const amount = Amounts.parseOrThrow(peerInc.contractTerms.amount);
const mergeReserveInfo = await getMergeReserveInfo(ws, {
exchangeBaseUrl: peerInc.exchangeBaseUrl,
});
const mergeTimestamp = TalerProtocolTimestamp.now();
const reservePayto = talerPaytoFromExchangeReserve(
peerInc.exchangeBaseUrl,
mergeReserveInfo.reservePub,
);
const sigRes = await ws.cryptoApi.signPurseMerge({
contractTermsHash: ContractTermsUtil.hashContractTerms(
peerInc.contractTerms,
),
flags: WalletAccountMergeFlags.MergeFullyPaidPurse,
mergePriv: peerInc.mergePriv,
mergeTimestamp: mergeTimestamp,
purseAmount: Amounts.stringify(amount),
purseExpiration: peerInc.contractTerms.purse_expiration,
purseFee: Amounts.stringify(Amounts.getZero(amount.currency)),
pursePub: peerInc.pursePub,
reservePayto,
reservePriv: mergeReserveInfo.reservePriv,
});
const mergePurseUrl = new URL(
`purses/${peerInc.pursePub}/merge`,
peerInc.exchangeBaseUrl,
);
const mergeReq: ExchangePurseMergeRequest = {
payto_uri: reservePayto,
merge_timestamp: mergeTimestamp,
merge_sig: sigRes.mergeSig,
reserve_sig: sigRes.accountSig,
};
const mergeHttpReq = await ws.http.postJson(mergePurseUrl.href, mergeReq);
logger.info(`merge request: ${j2s(mergeReq)}`);
const res = await readSuccessResponseJsonOrThrow(mergeHttpReq, codecForAny());
logger.info(`merge response: ${j2s(res)}`);
await internalCreateWithdrawalGroup(ws, {
amount,
wgInfo: {
withdrawalType: WithdrawalRecordType.PeerPushCredit,
contractTerms: peerInc.contractTerms,
},
exchangeBaseUrl: peerInc.exchangeBaseUrl,
reserveStatus: ReserveRecordStatus.QueryingStatus,
reserveKeyPair: {
priv: mergeReserveInfo.reservePriv,
pub: mergeReserveInfo.reservePub,
},
});
}
/**
* FIXME: Bad name!
*/
export async function acceptPeerPullPayment(
ws: InternalWalletState,
req: AcceptPeerPullPaymentRequest,
): Promise<void> {
const peerPullInc = await ws.db
.mktx((x) => ({ peerPullPaymentIncoming: x.peerPullPaymentIncoming }))
.runReadOnly(async (tx) => {
return tx.peerPullPaymentIncoming.get(req.peerPullPaymentIncomingId);
});
if (!peerPullInc) {
throw Error(
`can't accept unknown incoming p2p pull payment (${req.peerPullPaymentIncomingId})`,
);
}
const instructedAmount = Amounts.parseOrThrow(
peerPullInc.contractTerms.amount,
);
const coinSelRes: PeerCoinSelection | undefined = await ws.db
.mktx((x) => ({
exchanges: x.exchanges,
coins: x.coins,
denominations: x.denominations,
refreshGroups: x.refreshGroups,
peerPullPaymentIncoming: x.peerPullPaymentIncoming,
}))
.runReadWrite(async (tx) => {
const sel = await selectPeerCoins(ws, tx, instructedAmount);
if (!sel) {
return undefined;
}
const pubs: CoinPublicKey[] = [];
for (const c of sel.coins) {
const coin = await tx.coins.get(c.coinPub);
checkDbInvariant(!!coin);
coin.currentAmount = Amounts.sub(
coin.currentAmount,
Amounts.parseOrThrow(c.contribution),
).amount;
coin.status = CoinStatus.Dormant;
await tx.coins.put(coin);
}
await createRefreshGroup(ws, tx, pubs, RefreshReason.Pay);
const pi = await tx.peerPullPaymentIncoming.get(
req.peerPullPaymentIncomingId,
);
if (!pi) {
throw Error();
}
pi.accepted = true;
await tx.peerPullPaymentIncoming.put(pi);
return sel;
});
logger.info(`selected p2p coins (pull): ${j2s(coinSelRes)}`);
if (!coinSelRes) {
throw Error("insufficient balance");
}
const pursePub = peerPullInc.pursePub;
const depositSigsResp = await ws.cryptoApi.signPurseDeposits({
exchangeBaseUrl: coinSelRes.exchangeBaseUrl,
pursePub,
coins: coinSelRes.coins,
});
const purseDepositUrl = new URL(
`purses/${pursePub}/deposit`,
coinSelRes.exchangeBaseUrl,
);
const depositPayload: ExchangePurseDeposits = {
deposits: depositSigsResp.deposits,
};
const httpResp = await ws.http.postJson(purseDepositUrl.href, depositPayload);
const resp = await readSuccessResponseJsonOrThrow(httpResp, codecForAny());
logger.trace(`purse deposit response: ${j2s(resp)}`);
}
export async function checkPeerPullPayment(
ws: InternalWalletState,
req: CheckPeerPullPaymentRequest,
): Promise<CheckPeerPullPaymentResponse> {
const uri = parsePayPullUri(req.talerUri);
if (!uri) {
throw Error("got invalid taler://pay-push URI");
}
const exchangeBaseUrl = uri.exchangeBaseUrl;
const contractPriv = uri.contractPriv;
const contractPub = encodeCrock(eddsaGetPublic(decodeCrock(contractPriv)));
const getContractUrl = new URL(`contracts/${contractPub}`, exchangeBaseUrl);
const contractHttpResp = await ws.http.get(getContractUrl.href);
const contractResp = await readSuccessResponseJsonOrThrow(
contractHttpResp,
codecForExchangeGetContractResponse(),
);
const pursePub = contractResp.purse_pub;
const dec = await ws.cryptoApi.decryptContractForDeposit({
ciphertext: contractResp.econtract,
contractPriv: contractPriv,
pursePub: pursePub,
});
const getPurseUrl = new URL(`purses/${pursePub}/merge`, exchangeBaseUrl);
const purseHttpResp = await ws.http.get(getPurseUrl.href);
const purseStatus = await readSuccessResponseJsonOrThrow(
purseHttpResp,
codecForExchangePurseStatus(),
);
const peerPullPaymentIncomingId = encodeCrock(getRandomBytes(32));
await ws.db
.mktx((x) => ({
peerPullPaymentIncoming: x.peerPullPaymentIncoming,
}))
.runReadWrite(async (tx) => {
await tx.peerPullPaymentIncoming.add({
peerPullPaymentIncomingId,
contractPriv: contractPriv,
exchangeBaseUrl: exchangeBaseUrl,
pursePub: pursePub,
timestampCreated: TalerProtocolTimestamp.now(),
contractTerms: dec.contractTerms,
paid: false,
accepted: false,
});
});
return {
amount: purseStatus.balance,
contractTerms: dec.contractTerms,
peerPullPaymentIncomingId,
};
}
export async function initiatePeerRequestForPay(
ws: InternalWalletState,
req: InitiatePeerPullPaymentRequest,
): Promise<InitiatePeerPullPaymentResponse> {
await updateExchangeFromUrl(ws, req.exchangeBaseUrl);
const mergeReserveInfo = await getMergeReserveInfo(ws, {
exchangeBaseUrl: req.exchangeBaseUrl,
});
const mergeTimestamp = TalerProtocolTimestamp.now();
const pursePair = await ws.cryptoApi.createEddsaKeypair({});
const mergePair = await ws.cryptoApi.createEddsaKeypair({});
const purseExpiration: TalerProtocolTimestamp = AbsoluteTime.toTimestamp(
AbsoluteTime.addDuration(
AbsoluteTime.now(),
Duration.fromSpec({ days: 2 }),
),
);
const reservePayto = talerPaytoFromExchangeReserve(
req.exchangeBaseUrl,
mergeReserveInfo.reservePub,
);
const contractTerms = {
...req.partialContractTerms,
amount: req.amount,
purse_expiration: purseExpiration,
};
const econtractResp = await ws.cryptoApi.encryptContractForDeposit({
contractTerms,
pursePriv: pursePair.priv,
pursePub: pursePair.pub,
});
const hContractTerms = ContractTermsUtil.hashContractTerms(contractTerms);
const purseFee = Amounts.stringify(
Amounts.getZero(Amounts.parseOrThrow(req.amount).currency),
);
const sigRes = await ws.cryptoApi.signReservePurseCreate({
contractTermsHash: hContractTerms,
flags: WalletAccountMergeFlags.CreateWithPurseFee,
mergePriv: mergePair.priv,
mergeTimestamp: mergeTimestamp,
purseAmount: req.amount,
purseExpiration: purseExpiration,
purseFee: purseFee,
pursePriv: pursePair.priv,
pursePub: pursePair.pub,
reservePayto,
reservePriv: mergeReserveInfo.reservePriv,
});
await ws.db
.mktx((x) => ({
peerPullPaymentInitiation: x.peerPullPaymentInitiations,
}))
.runReadWrite(async (tx) => {
await tx.peerPullPaymentInitiation.put({
amount: req.amount,
contractTerms,
exchangeBaseUrl: req.exchangeBaseUrl,
pursePriv: pursePair.priv,
pursePub: pursePair.pub,
});
});
const reservePurseReqBody: ExchangeReservePurseRequest = {
merge_sig: sigRes.mergeSig,
merge_timestamp: mergeTimestamp,
h_contract_terms: hContractTerms,
merge_pub: mergePair.pub,
min_age: 0,
purse_expiration: purseExpiration,
purse_fee: purseFee,
purse_pub: pursePair.pub,
purse_sig: sigRes.purseSig,
purse_value: req.amount,
reserve_sig: sigRes.accountSig,
econtract: econtractResp.econtract,
};
logger.info(`reserve purse request: ${j2s(reservePurseReqBody)}`);
const reservePurseMergeUrl = new URL(
`reserves/${mergeReserveInfo.reservePub}/purse`,
req.exchangeBaseUrl,
);
const httpResp = await ws.http.postJson(
reservePurseMergeUrl.href,
reservePurseReqBody,
);
const resp = await readSuccessResponseJsonOrThrow(httpResp, codecForAny());
logger.info(`reserve merge response: ${j2s(resp)}`);
await internalCreateWithdrawalGroup(ws, {
amount: Amounts.parseOrThrow(req.amount),
wgInfo: {
withdrawalType: WithdrawalRecordType.PeerPullCredit,
contractTerms,
contractPriv: econtractResp.contractPriv,
},
exchangeBaseUrl: req.exchangeBaseUrl,
reserveStatus: ReserveRecordStatus.QueryingStatus,
reserveKeyPair: {
priv: mergeReserveInfo.reservePriv,
pub: mergeReserveInfo.reservePub,
},
});
return {
talerUri: constructPayPullUri({
exchangeBaseUrl: req.exchangeBaseUrl,
contractPriv: econtractResp.contractPriv,
}),
};
}
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