diff options
author | Florian Dold <florian@dold.me> | 2023-02-19 23:13:44 +0100 |
---|---|---|
committer | Florian Dold <florian@dold.me> | 2023-02-19 23:13:44 +0100 |
commit | e6ed901626a5219a1d091f4f41654365d2c29531 (patch) | |
tree | 1dfb2fbc7615ebe6e91621b901bf90968bd98edf /packages | |
parent | 925ef1f410e01323ee24ab9019afcc1713bf07c2 (diff) |
wallet-core: various p2p payment fixes
Diffstat (limited to 'packages')
-rw-r--r-- | packages/taler-harness/src/integrationtests/test-peer-to-peer-pull.ts | 4 | ||||
-rw-r--r-- | packages/taler-util/src/wallet-types.ts | 21 | ||||
-rw-r--r-- | packages/taler-wallet-cli/src/index.ts | 150 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/db.ts | 58 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/operations/common.ts | 14 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/operations/pay-peer.ts | 283 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/operations/pending.ts | 29 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/operations/transactions.ts | 5 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/operations/withdraw.ts | 6 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/pending-types.ts | 10 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/util/retries.ts | 6 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/wallet-api-types.ts | 10 | ||||
-rw-r--r-- | packages/taler-wallet-core/src/wallet.ts | 15 |
13 files changed, 537 insertions, 74 deletions
diff --git a/packages/taler-harness/src/integrationtests/test-peer-to-peer-pull.ts b/packages/taler-harness/src/integrationtests/test-peer-to-peer-pull.ts index 80978e726..15b274e6b 100644 --- a/packages/taler-harness/src/integrationtests/test-peer-to-peer-pull.ts +++ b/packages/taler-harness/src/integrationtests/test-peer-to-peer-pull.ts @@ -31,9 +31,7 @@ import { export async function runPeerToPeerPullTest(t: GlobalTestState) { // Set up test environment - const { bank, exchange, merchant } = await createSimpleTestkudosEnvironment( - t, - ); + const { bank, exchange } = await createSimpleTestkudosEnvironment(t); // Withdraw digital cash into the wallet. const wallet1 = new WalletCli(t, "w1"); diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts index 06d76a6d4..5841b316e 100644 --- a/packages/taler-util/src/wallet-types.ts +++ b/packages/taler-util/src/wallet-types.ts @@ -2038,7 +2038,7 @@ export interface PreparePeerPushPaymentRequest { /** * Instructed amount. - * + * * FIXME: Allow specifying the instructed amount type. */ amount: AmountString; @@ -2092,7 +2092,14 @@ export interface CheckPeerPushPaymentResponse { export interface CheckPeerPullPaymentResponse { contractTerms: PeerContractTerms; + /** + * @deprecated Redundant field with bad name, will be removed soon. + */ amount: AmountString; + + amountRaw: AmountString; + amountEffective: AmountString; + peerPullPaymentIncomingId: string; } @@ -2161,25 +2168,23 @@ export const codecForAcceptPeerPullPaymentRequest = .build("AcceptPeerPllPaymentRequest"); export interface PreparePeerPullPaymentRequest { - exchangeBaseUrl: string; + exchangeBaseUrl?: string; amount: AmountString; } export const codecForPreparePeerPullPaymentRequest = (): Codec<PreparePeerPullPaymentRequest> => buildCodecForObject<PreparePeerPullPaymentRequest>() .property("amount", codecForAmountString()) - .property("exchangeBaseUrl", codecForString()) + .property("exchangeBaseUrl", codecOptional(codecForString())) .build("PreparePeerPullPaymentRequest"); export interface PreparePeerPullPaymentResponse { + exchangeBaseUrl: string; amountRaw: AmountString; amountEffective: AmountString; } export interface InitiatePeerPullPaymentRequest { - /** - * FIXME: Make this optional? - */ - exchangeBaseUrl: string; + exchangeBaseUrl?: string; partialContractTerms: PeerContractTerms; } @@ -2187,7 +2192,7 @@ export const codecForInitiatePeerPullPaymentRequest = (): Codec<InitiatePeerPullPaymentRequest> => buildCodecForObject<InitiatePeerPullPaymentRequest>() .property("partialContractTerms", codecForPeerContractTerms()) - .property("exchangeBaseUrl", codecForString()) + .property("exchangeBaseUrl", codecOptional(codecForString())) .build("InitiatePeerPullPaymentRequest"); export interface InitiatePeerPullPaymentResponse { diff --git a/packages/taler-wallet-cli/src/index.ts b/packages/taler-wallet-cli/src/index.ts index aed9a24c0..dbd5ce956 100644 --- a/packages/taler-wallet-cli/src/index.ts +++ b/packages/taler-wallet-cli/src/index.ts @@ -18,12 +18,14 @@ * Imports. */ import { + AbsoluteTime, addPaytoQueryParams, AgeRestriction, classifyTalerUri, codecForList, codecForString, CoreApiResponse, + Duration, encodeCrock, getErrorDetailFromException, getRandomBytes, @@ -35,6 +37,7 @@ import { setDangerousTimetravel, setGlobalLogLevelFromString, summarizeTalerErrorDetail, + TalerProtocolTimestamp, TalerUriType, WalletNotification, } from "@gnu-taler/taler-util"; @@ -43,6 +46,7 @@ import { getenv, pathHomedir, processExit, + readlinePrompt, setUnhandledRejectionHandler, } from "@gnu-taler/taler-util/compat"; import { createPlatformHttpLib } from "@gnu-taler/taler-util/http"; @@ -416,7 +420,7 @@ transactionsCli }); transactionsCli - .subcommand("abortTransaction", "delete", { + .subcommand("abortTransaction", "abort", { help: "Abort a transaction.", }) .requiredArgument("transactionId", clk.STRING, { @@ -552,11 +556,16 @@ walletCli .subcommand("handleUri", "handle-uri", { help: "Handle a taler:// URI.", }) - .requiredArgument("uri", clk.STRING) + .maybeArgument("uri", clk.STRING) .flag("autoYes", ["-y", "--yes"]) .action(async (args) => { await withWallet(args, async (wallet) => { - const uri: string = args.handleUri.uri; + let uri; + if (args.handleUri.uri) { + uri = args.handleUri.uri; + } else { + uri = await readlinePrompt("Taler URI: "); + } const uriType = classifyTalerUri(uri); switch (uriType) { case TalerUriType.TalerPay: @@ -921,6 +930,141 @@ const advancedCli = walletCli.subcommand("advancedArgs", "advanced", { }); advancedCli + .subcommand("checkPayPull", "check-pay-pull", { + help: "Check fees for a peer-pull payment initiation.", + }) + .requiredArgument("amount", clk.STRING, { + help: "Amount to request", + }) + .action(async (args) => { + await withWallet(args, async (wallet) => { + const resp = await wallet.client.call( + WalletApiOperation.PreparePeerPullPayment, + { + amount: args.checkPayPull.amount, + }, + ); + console.log(JSON.stringify(resp, undefined, 2)); + }); + }); + +advancedCli + .subcommand("prepareIncomingPayPull", "prepare-incoming-pay-pull") + .requiredArgument("talerUri", clk.STRING) + .action(async (args) => { + await withWallet(args, async (wallet) => { + const resp = await wallet.client.call( + WalletApiOperation.CheckPeerPullPayment, + { + talerUri: args.prepareIncomingPayPull.talerUri, + }, + ); + console.log(JSON.stringify(resp, undefined, 2)); + }); + }); + +advancedCli + .subcommand("confirmIncomingPayPull", "confirm-incoming-pay-pull") + .requiredArgument("peerPullPaymentIncomingId", clk.STRING) + .action(async (args) => { + await withWallet(args, async (wallet) => { + const resp = await wallet.client.call( + WalletApiOperation.AcceptPeerPullPayment, + { + peerPullPaymentIncomingId: + args.confirmIncomingPayPull.peerPullPaymentIncomingId, + }, + ); + console.log(JSON.stringify(resp, undefined, 2)); + }); + }); + +advancedCli + .subcommand("initiatePayPull", "initiate-pay-pull", { + help: "Initiate a peer-pull payment.", + }) + .requiredArgument("amount", clk.STRING, { + help: "Amount to request", + }) + .maybeOption("summary", ["--summary"], clk.STRING, { + help: "Summary to use in the contract terms.", + }) + .maybeOption("exchangeBaseUrl", ["--exchange"], clk.STRING) + .action(async (args) => { + await withWallet(args, async (wallet) => { + const resp = await wallet.client.call( + WalletApiOperation.InitiatePeerPullPayment, + { + exchangeBaseUrl: args.initiatePayPull.exchangeBaseUrl, + partialContractTerms: { + amount: args.initiatePayPull.amount, + summary: args.initiatePayPull.summary ?? "Invoice", + // FIXME: Make the expiration configurable + purse_expiration: AbsoluteTime.toTimestamp( + AbsoluteTime.addDuration( + AbsoluteTime.now(), + Duration.fromSpec({ hours: 1 }), + ), + ), + }, + }, + ); + console.log(JSON.stringify(resp, undefined, 2)); + }); + }); + +advancedCli + .subcommand("checkPayPush", "check-pay-push", { + help: "Check fees for a peer-push payment.", + }) + .requiredArgument("amount", clk.STRING, { + help: "Amount to pay", + }) + .action(async (args) => { + await withWallet(args, async (wallet) => { + const resp = await wallet.client.call( + WalletApiOperation.PreparePeerPushPayment, + { + amount: args.checkPayPush.amount, + }, + ); + console.log(JSON.stringify(resp, undefined, 2)); + }); + }); + +advancedCli + .subcommand("payPush", "initiate-pay-push", { + help: "Initiate a peer-push payment.", + }) + .requiredArgument("amount", clk.STRING, { + help: "Amount to pay", + }) + .maybeOption("summary", ["--summary"], clk.STRING, { + help: "Summary to use in the contract terms.", + }) + .action(async (args) => { + await withWallet(args, async (wallet) => { + const resp = await wallet.client.call( + WalletApiOperation.InitiatePeerPushPayment, + { + partialContractTerms: { + amount: args.payPush.amount, + summary: args.payPush.summary ?? "Payment", + // FIXME: Make the expiration configurable + purse_expiration: AbsoluteTime.toTimestamp( + AbsoluteTime.addDuration( + AbsoluteTime.now(), + Duration.fromSpec({ hours: 1 }), + ), + ), + }, + }, + ); + console.log(JSON.stringify(resp, undefined, 2)); + }); + }); + +advancedCli .subcommand("serve", "serve", { help: "Serve the wallet API via a unix domain socket.", }) diff --git a/packages/taler-wallet-core/src/db.ts b/packages/taler-wallet-core/src/db.ts index 75e6408f7..f8fbe2f07 100644 --- a/packages/taler-wallet-core/src/db.ts +++ b/packages/taler-wallet-core/src/db.ts @@ -54,9 +54,7 @@ import { WireInfo, HashCodeString, Amounts, - AttentionPriority, AttentionInfo, - AbsoluteTime, Logger, CoinPublicKeyString, } from "@gnu-taler/taler-util"; @@ -72,7 +70,6 @@ import { StoreWithIndexes, } from "./util/query.js"; import { RetryInfo, RetryTags } from "./util/retries.js"; -import { Wallet } from "./wallet.js"; /** * This file contains the database schema of the Taler wallet together @@ -121,7 +118,7 @@ export const CURRENT_DB_CONFIG_KEY = "currentMainDbName"; * backwards-compatible way or object stores and indices * are added. */ -export const WALLET_DB_MINOR_VERSION = 3; +export const WALLET_DB_MINOR_VERSION = 4; /** * Ranges for operation status fields. @@ -539,6 +536,13 @@ export interface ExchangeRecord { baseUrl: string; /** + * When did we confirm the last withdrawal from this exchange? + * + * Used mostly in the UI to suggest exchanges. + */ + lastWithdrawal?: TalerProtocolTimestamp; + + /** * Pointer to the current exchange details. * * Should usually not change. Only changes when the @@ -1852,6 +1856,20 @@ export enum PeerPullPaymentIncomingStatus { Paid = 50 /* DORMANT_START */, } +export interface PeerPullPaymentCoinSelection { + contributions: AmountString[]; + coinPubs: CoinPublicKeyString[]; + + /** + * Total cost based on the coin selection. + * Non undefined after status === "Accepted" + */ + totalCost: AmountString | undefined; +} + +/** + * AKA PeerPullDebit. + */ export interface PeerPullPaymentIncomingRecord { peerPullPaymentIncomingId: string; @@ -1863,6 +1881,9 @@ export interface PeerPullPaymentIncomingRecord { timestampCreated: TalerProtocolTimestamp; + /** + * Contract priv that we got from the other party. + */ contractPriv: string; /** @@ -1871,10 +1892,11 @@ export interface PeerPullPaymentIncomingRecord { status: PeerPullPaymentIncomingStatus; /** - * Total cost based on the coin selection. - * Non undefined after status === "Accepted" + * Estimated total cost when the record was created. */ - totalCost: AmountString | undefined; + totalCostEstimated: AmountString; + + coinSel?: PeerPullPaymentCoinSelection; } /** @@ -2251,6 +2273,14 @@ export const WalletStoresV1 = { "exchangeBaseUrl", "pursePub", ]), + byExchangeAndContractPriv: describeIndex( + "byExchangeAndContractPriv", + ["exchangeBaseUrl", "contractPriv"], + { + versionAdded: 4, + unique: true, + }, + ), byStatus: describeIndex("byStatus", "status"), }, ), @@ -2484,6 +2514,20 @@ export const walletDbFixups: FixupDescription[] = [ }); }, }, + { + name: "PeerPullPaymentIncomingRecord_totalCostEstimated_add", + async fn(tx): Promise<void> { + await tx.peerPullPaymentIncoming.iter().forEachAsync(async (pi) => { + if (pi.totalCostEstimated) { + return; + } + // Not really the cost, but a good substitute for older transactions + // that don't sture the effective cost of the transaction. + pi.totalCostEstimated = pi.contractTerms.amount; + await tx.peerPullPaymentIncoming.put(pi); + }); + }, + }, ]; const logger = new Logger("db.ts"); diff --git a/packages/taler-wallet-core/src/operations/common.ts b/packages/taler-wallet-core/src/operations/common.ts index e61a6fe95..2db5cd7b4 100644 --- a/packages/taler-wallet-core/src/operations/common.ts +++ b/packages/taler-wallet-core/src/operations/common.ts @@ -51,6 +51,7 @@ import { OperationAttemptResultType, RetryInfo, } from "../util/retries.js"; +import { CryptoApiStoppedError } from "../crypto/workers/crypto-dispatcher.js"; const logger = new Logger("operations/common.ts"); @@ -260,6 +261,19 @@ export async function runOperationWithErrorReporting<T1, T2>( return resp; } } catch (e) { + if (e instanceof CryptoApiStoppedError) { + if (ws.stopped) { + logger.warn("crypto API stopped during shutdown, ignoring error"); + return { + type: OperationAttemptResultType.Error, + errorDetail: makeErrorDetail( + TalerErrorCode.WALLET_UNEXPECTED_EXCEPTION, + {}, + "Crypto API stopped during shutdown", + ), + }; + } + } if (e instanceof TalerError) { logger.warn("operation processed resulted in error"); logger.warn(`error was: ${j2s(e.errorDetail)}`); diff --git a/packages/taler-wallet-core/src/operations/pay-peer.ts b/packages/taler-wallet-core/src/operations/pay-peer.ts index c1cacead9..eda107bea 100644 --- a/packages/taler-wallet-core/src/operations/pay-peer.ts +++ b/packages/taler-wallet-core/src/operations/pay-peer.ts @@ -18,6 +18,7 @@ * Imports. */ import { + AbsoluteTime, AcceptPeerPullPaymentRequest, AcceptPeerPullPaymentResponse, AcceptPeerPushPaymentRequest, @@ -35,6 +36,7 @@ import { codecForAmountString, codecForAny, codecForExchangeGetContractResponse, + codecForPeerContractTerms, CoinStatus, constructPayPullUri, constructPayPushUri, @@ -545,6 +547,9 @@ export async function initiatePeerPushPayment( x.peerPushPaymentInitiations, ]) .runReadWrite(async (tx) => { + // FIXME: Instead of directly doing a spendCoin here, + // we might want to mark the coins as used and spend them + // after we've been able to create the purse. await spendCoins(ws, tx, { allocationId: `txn:peer-push-debit:${pursePair.pub}`, coinPubs: sel.coins.map((x) => x.coinPub), @@ -846,7 +851,77 @@ export async function acceptPeerPushPayment( }; } -export async function acceptPeerPullPayment( +export async function processPeerPullDebit( + ws: InternalWalletState, + peerPullPaymentIncomingId: string, +): Promise<OperationAttemptResult> { + const peerPullInc = await ws.db + .mktx((x) => [x.peerPullPaymentIncoming]) + .runReadOnly(async (tx) => { + return tx.peerPullPaymentIncoming.get(peerPullPaymentIncomingId); + }); + if (!peerPullInc) { + throw Error("peer pull debit not found"); + } + if (peerPullInc.status === PeerPullPaymentIncomingStatus.Accepted) { + const pursePub = peerPullInc.pursePub; + + const coinSel = peerPullInc.coinSel; + if (!coinSel) { + throw Error("invalid state, no coins selected"); + } + + const coins = await queryCoinInfosForSelection(ws, coinSel); + + const depositSigsResp = await ws.cryptoApi.signPurseDeposits({ + exchangeBaseUrl: peerPullInc.exchangeBaseUrl, + pursePub: peerPullInc.pursePub, + coins, + }); + + const purseDepositUrl = new URL( + `purses/${pursePub}/deposit`, + peerPullInc.exchangeBaseUrl, + ); + + const depositPayload: ExchangePurseDeposits = { + deposits: depositSigsResp.deposits, + }; + + if (logger.shouldLogTrace()) { + logger.trace(`purse deposit payload: ${j2s(depositPayload)}`); + } + + const httpResp = await ws.http.postJson( + purseDepositUrl.href, + depositPayload, + ); + const resp = await readSuccessResponseJsonOrThrow(httpResp, codecForAny()); + logger.trace(`purse deposit response: ${j2s(resp)}`); + } + + await ws.db + .mktx((x) => [x.peerPullPaymentIncoming]) + .runReadWrite(async (tx) => { + const pi = await tx.peerPullPaymentIncoming.get( + peerPullPaymentIncomingId, + ); + if (!pi) { + throw Error("peer pull payment not found anymore"); + } + if (pi.status === PeerPullPaymentIncomingStatus.Accepted) { + pi.status = PeerPullPaymentIncomingStatus.Paid; + } + await tx.peerPullPaymentIncoming.put(pi); + }); + + return { + type: OperationAttemptResultType.Finished, + result: undefined, + }; +} + +export async function acceptIncomingPeerPullPayment( ws: InternalWalletState, req: AcceptPeerPullPaymentRequest, ): Promise<AcceptPeerPullPaymentResponse> { @@ -885,7 +960,7 @@ export async function acceptPeerPullPayment( coinSelRes.result.coins, ); - await ws.db + const ppi = await ws.db .mktx((x) => [ x.exchanges, x.coins, @@ -910,34 +985,26 @@ export async function acceptPeerPullPayment( if (!pi) { throw Error(); } - pi.status = PeerPullPaymentIncomingStatus.Accepted; - pi.totalCost = Amounts.stringify(totalAmount); + if (pi.status === PeerPullPaymentIncomingStatus.Proposed) { + pi.status = PeerPullPaymentIncomingStatus.Accepted; + pi.coinSel = { + coinPubs: sel.coins.map((x) => x.coinPub), + contributions: sel.coins.map((x) => x.contribution), + totalCost: Amounts.stringify(totalAmount), + }; + } await tx.peerPullPaymentIncoming.put(pi); + return pi; }); - const pursePub = peerPullInc.pursePub; - - const coinSel = coinSelRes.result; - - const depositSigsResp = await ws.cryptoApi.signPurseDeposits({ - exchangeBaseUrl: coinSel.exchangeBaseUrl, - pursePub, - coins: coinSel.coins, - }); - - const purseDepositUrl = new URL( - `purses/${pursePub}/deposit`, - coinSel.exchangeBaseUrl, + await runOperationWithErrorReporting( + ws, + RetryTags.forPeerPullPaymentDebit(ppi), + async () => { + return processPeerPullDebit(ws, ppi.peerPullPaymentIncomingId); + }, ); - 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)}`); - return { transactionId: makeTransactionId( TransactionType.PeerPullDebit, @@ -946,14 +1013,38 @@ export async function acceptPeerPullPayment( }; } -export async function checkPeerPullPayment( +/** + * Look up information about an incoming peer pull payment. + * Store the results in the wallet DB. + */ +export async function prepareIncomingPeerPullPayment( ws: InternalWalletState, req: CheckPeerPullPaymentRequest, ): Promise<CheckPeerPullPaymentResponse> { const uri = parsePayPullUri(req.talerUri); if (!uri) { - throw Error("got invalid taler://pay-push URI"); + throw Error("got invalid taler://pay-pull URI"); + } + + const existingPullIncomingRecord = await ws.db + .mktx((x) => [x.peerPullPaymentIncoming]) + .runReadOnly(async (tx) => { + return tx.peerPullPaymentIncoming.indexes.byExchangeAndContractPriv.get([ + uri.exchangeBaseUrl, + uri.contractPriv, + ]); + }); + + if (existingPullIncomingRecord) { + return { + amount: existingPullIncomingRecord.contractTerms.amount, + amountRaw: existingPullIncomingRecord.contractTerms.amount, + amountEffective: existingPullIncomingRecord.totalCostEstimated, + contractTerms: existingPullIncomingRecord.contractTerms, + peerPullPaymentIncomingId: + existingPullIncomingRecord.peerPullPaymentIncomingId, + }; } const exchangeBaseUrl = uri.exchangeBaseUrl; @@ -988,6 +1079,38 @@ export async function checkPeerPullPayment( const peerPullPaymentIncomingId = encodeCrock(getRandomBytes(32)); + let contractTerms: PeerContractTerms; + + if (dec.contractTerms) { + contractTerms = codecForPeerContractTerms().decode(dec.contractTerms); + // FIXME: Check that the purseStatus balance matches contract terms amount + } else { + // FIXME: In this case, where do we get the purse expiration from?! + // https://bugs.gnunet.org/view.php?id=7706 + throw Error("pull payments without contract terms not supported yet"); + } + + // FIXME: Why don't we compute the totalCost here?! + + const instructedAmount = Amounts.parseOrThrow(contractTerms.amount); + + const coinSelRes = await selectPeerCoins(ws, instructedAmount); + logger.info(`selected p2p coins (pull): ${j2s(coinSelRes)}`); + + if (coinSelRes.type !== "success") { + throw TalerError.fromDetail( + TalerErrorCode.WALLET_PEER_PUSH_PAYMENT_INSUFFICIENT_BALANCE, + { + insufficientBalanceDetails: coinSelRes.insufficientBalanceDetails, + }, + ); + } + + const totalAmount = await getTotalPeerPaymentCost( + ws, + coinSelRes.result.coins, + ); + await ws.db .mktx((x) => [x.peerPullPaymentIncoming]) .runReadWrite(async (tx) => { @@ -997,15 +1120,17 @@ export async function checkPeerPullPayment( exchangeBaseUrl: exchangeBaseUrl, pursePub: pursePub, timestampCreated: TalerProtocolTimestamp.now(), - contractTerms: dec.contractTerms, + contractTerms, status: PeerPullPaymentIncomingStatus.Proposed, - totalCost: undefined, + totalCostEstimated: Amounts.stringify(totalAmount), }); }); return { - amount: purseStatus.balance, - contractTerms: dec.contractTerms, + amount: contractTerms.amount, + amountEffective: Amounts.stringify(totalAmount), + amountRaw: contractTerms.amount, + contractTerms: contractTerms, peerPullPaymentIncomingId, }; } @@ -1119,12 +1244,75 @@ export async function processPeerPullInitiation( }; } -export async function preparePeerPullPayment( +/** + * Find a prefered exchange based on when we withdrew last from this exchange. + */ +async function getPreferredExchangeForCurrency( + ws: InternalWalletState, + currency: string, +): Promise<string | undefined> { + // Find an exchange with the matching currency. + // Prefer exchanges with the most recent withdrawal. + const url = await ws.db + .mktx((x) => [x.exchanges]) + .runReadOnly(async (tx) => { + const exchanges = await tx.exchanges.iter().toArray(); + let candidate = undefined; + for (const e of exchanges) { + if (e.detailsPointer?.currency !== currency) { + continue; + } + if (!candidate) { + candidate = e; + continue; + } + if (candidate.lastWithdrawal && !e.lastWithdrawal) { + continue; + } + if (candidate.lastWithdrawal && e.lastWithdrawal) { + if ( + AbsoluteTime.cmp( + AbsoluteTime.fromTimestamp(e.lastWithdrawal), + AbsoluteTime.fromTimestamp(candidate.lastWithdrawal), + ) > 0 + ) { + candidate = e; + } + } + } + if (candidate) { + return candidate.baseUrl; + } + return undefined; + }); + return url; +} + +/** + * Check fees and available exchanges for a peer push payment initiation. + */ +export async function checkPeerPullPaymentInitiation( ws: InternalWalletState, req: PreparePeerPullPaymentRequest, ): Promise<PreparePeerPullPaymentResponse> { - //FIXME: look up for exchange details and use purse fee + // FIXME: We don't support exchanges with purse fees yet. + // Select an exchange where we have money in the specified currency + // FIXME: How do we handle regional currency scopes here? Is it an additional input? + + const currency = Amounts.currencyOf(req.amount); + let exchangeUrl; + if (req.exchangeBaseUrl) { + exchangeUrl = req.exchangeBaseUrl; + } else { + exchangeUrl = await getPreferredExchangeForCurrency(ws, currency); + } + + if (!exchangeUrl) { + throw Error("no exchange found for initiating a peer pull payment"); + } + return { + exchangeBaseUrl: exchangeUrl, amountEffective: req.amount, amountRaw: req.amount, }; @@ -1137,10 +1325,24 @@ export async function initiatePeerPullPayment( ws: InternalWalletState, req: InitiatePeerPullPaymentRequest, ): Promise<InitiatePeerPullPaymentResponse> { - await updateExchangeFromUrl(ws, req.exchangeBaseUrl); + const currency = Amounts.currencyOf(req.partialContractTerms.amount); + let maybeExchangeBaseUrl: string | undefined; + if (req.exchangeBaseUrl) { + maybeExchangeBaseUrl = req.exchangeBaseUrl; + } else { + maybeExchangeBaseUrl = await getPreferredExchangeForCurrency(ws, currency); + } + + if (!maybeExchangeBaseUrl) { + throw Error("no exchange found for initiating a peer pull payment"); + } + + const exchangeBaseUrl = maybeExchangeBaseUrl; + + await updateExchangeFromUrl(ws, exchangeBaseUrl); const mergeReserveInfo = await getMergeReserveInfo(ws, { - exchangeBaseUrl: req.exchangeBaseUrl, + exchangeBaseUrl: exchangeBaseUrl, }); const mergeTimestamp = TalerProtocolTimestamp.now(); @@ -1166,7 +1368,7 @@ export async function initiatePeerPullPayment( await tx.peerPullPaymentInitiations.put({ amount: req.partialContractTerms.amount, contractTermsHash: hContractTerms, - exchangeBaseUrl: req.exchangeBaseUrl, + exchangeBaseUrl: exchangeBaseUrl, pursePriv: pursePair.priv, pursePub: pursePair.pub, mergePriv: mergePair.priv, @@ -1196,6 +1398,9 @@ export async function initiatePeerPullPayment( }, ); + // FIXME: Why do we create this only here? + // What if the previous operation didn't succeed? + const wg = await internalCreateWithdrawalGroup(ws, { amount: instructedAmount, wgInfo: { @@ -1203,7 +1408,7 @@ export async function initiatePeerPullPayment( contractTerms, contractPriv: contractKeyPair.priv, }, - exchangeBaseUrl: req.exchangeBaseUrl, + exchangeBaseUrl: exchangeBaseUrl, reserveStatus: WithdrawalGroupStatus.QueryingStatus, reserveKeyPair: { priv: mergeReserveInfo.reservePriv, @@ -1213,7 +1418,7 @@ export async function initiatePeerPullPayment( return { talerUri: constructPayPullUri({ - exchangeBaseUrl: req.exchangeBaseUrl, + exchangeBaseUrl: exchangeBaseUrl, contractPriv: contractKeyPair.priv, }), transactionId: makeTransactionId( @@ -1222,5 +1427,3 @@ export async function initiatePeerPullPayment( ), }; } - - diff --git a/packages/taler-wallet-core/src/operations/pending.ts b/packages/taler-wallet-core/src/operations/pending.ts index a73af528c..d1d1bb03a 100644 --- a/packages/taler-wallet-core/src/operations/pending.ts +++ b/packages/taler-wallet-core/src/operations/pending.ts @@ -29,6 +29,7 @@ import { OperationStatus, OperationStatusRange, PeerPushPaymentInitiationStatus, + PeerPullPaymentIncomingStatus, } from "../db.js"; import { PendingOperationsResponse, @@ -377,6 +378,32 @@ async function gatherPeerPullInitiationPending( }); } +async function gatherPeerPullDebitPending( + ws: InternalWalletState, + tx: GetReadOnlyAccess<{ + peerPullPaymentIncoming: typeof WalletStoresV1.peerPullPaymentIncoming; + operationRetries: typeof WalletStoresV1.operationRetries; + }>, + now: AbsoluteTime, + resp: PendingOperationsResponse, +): Promise<void> { + await tx.peerPullPaymentIncoming.iter().forEachAsync(async (pi) => { + if (pi.status === PeerPullPaymentIncomingStatus.Paid) { + return; + } + const opId = RetryTags.forPeerPullPaymentDebit(pi); + const retryRecord = await tx.operationRetries.get(opId); + const timestampDue = retryRecord?.retryInfo.nextRetry ?? AbsoluteTime.now(); + resp.pendingOperations.push({ + type: PendingTaskType.PeerPullDebit, + ...getPendingCommon(ws, opId, timestampDue), + givesLifeness: true, + retryInfo: retryRecord?.retryInfo, + peerPullPaymentIncomingId: pi.peerPullPaymentIncomingId, + }); + }); +} + async function gatherPeerPushInitiationPending( ws: InternalWalletState, tx: GetReadOnlyAccess<{ @@ -423,6 +450,7 @@ export async function getPendingOperations( x.operationRetries, x.peerPullPaymentInitiations, x.peerPushPaymentInitiations, + x.peerPullPaymentIncoming, ]) .runReadWrite(async (tx) => { const resp: PendingOperationsResponse = { @@ -438,6 +466,7 @@ export async function getPendingOperations( await gatherBackupPending(ws, tx, now, resp); await gatherPeerPushInitiationPending(ws, tx, now, resp); await gatherPeerPullInitiationPending(ws, tx, now, resp); + await gatherPeerPullDebitPending(ws, tx, now, resp); return resp; }); } diff --git a/packages/taler-wallet-core/src/operations/transactions.ts b/packages/taler-wallet-core/src/operations/transactions.ts index d2a7e9d41..1864a0b50 100644 --- a/packages/taler-wallet-core/src/operations/transactions.ts +++ b/packages/taler-wallet-core/src/operations/transactions.ts @@ -24,7 +24,6 @@ import { constructPayPullUri, constructPayPushUri, ExtendedStatus, - j2s, Logger, OrderShortInfo, PaymentStatus, @@ -402,8 +401,8 @@ function buildTransactionForPullPaymentDebit( ): Transaction { return { type: TransactionType.PeerPullDebit, - amountEffective: pi.totalCost - ? pi.totalCost + amountEffective: pi.coinSel?.totalCost + ? pi.coinSel?.totalCost : Amounts.stringify(pi.contractTerms.amount), amountRaw: Amounts.stringify(pi.contractTerms.amount), exchangeBaseUrl: pi.exchangeBaseUrl, diff --git a/packages/taler-wallet-core/src/operations/withdraw.ts b/packages/taler-wallet-core/src/operations/withdraw.ts index f6d79b229..e6c233e2b 100644 --- a/packages/taler-wallet-core/src/operations/withdraw.ts +++ b/packages/taler-wallet-core/src/operations/withdraw.ts @@ -1914,6 +1914,12 @@ export async function internalCreateWithdrawalGroup( reservePriv: withdrawalGroup.reservePriv, }); + const exchange = await tx.exchanges.get(withdrawalGroup.exchangeBaseUrl); + if (exchange) { + exchange.lastWithdrawal = TalerProtocolTimestamp.now(); + await tx.exchanges.put(exchange); + } + if (!isAudited && !isTrusted) { await tx.exchangeTrust.put({ currency: amount.currency, diff --git a/packages/taler-wallet-core/src/pending-types.ts b/packages/taler-wallet-core/src/pending-types.ts index 809fa52d4..fd742250c 100644 --- a/packages/taler-wallet-core/src/pending-types.ts +++ b/packages/taler-wallet-core/src/pending-types.ts @@ -39,6 +39,7 @@ export enum PendingTaskType { Backup = "backup", PeerPushInitiation = "peer-push-initiation", PeerPullInitiation = "peer-pull-initiation", + PeerPullDebit = "peer-pull-debit", } /** @@ -57,6 +58,7 @@ export type PendingTaskInfo = PendingTaskInfoCommon & | PendingBackupTask | PendingPeerPushInitiationTask | PendingPeerPullInitiationTask + | PendingPeerPullDebitTask ); export interface PendingBackupTask { @@ -91,6 +93,14 @@ export interface PendingPeerPullInitiationTask { } /** + * The wallet wants to send a peer pull payment. + */ +export interface PendingPeerPullDebitTask { + type: PendingTaskType.PeerPullDebit; + peerPullPaymentIncomingId: string; +} + +/** * The wallet should check whether coins from this exchange * need to be auto-refreshed. */ diff --git a/packages/taler-wallet-core/src/util/retries.ts b/packages/taler-wallet-core/src/util/retries.ts index 742381f7b..6485a6b79 100644 --- a/packages/taler-wallet-core/src/util/retries.ts +++ b/packages/taler-wallet-core/src/util/retries.ts @@ -31,6 +31,7 @@ import { BackupProviderRecord, DepositGroupRecord, ExchangeRecord, + PeerPullPaymentIncomingRecord, PeerPullPaymentInitiationRecord, PeerPushPaymentInitiationRecord, PurchaseRecord, @@ -215,6 +216,11 @@ export namespace RetryTags { ): string { return `${PendingTaskType.PeerPullInitiation}:${ppi.pursePub}`; } + export function forPeerPullPaymentDebit( + ppi: PeerPullPaymentIncomingRecord, + ): string { + return `${PendingTaskType.PeerPullDebit}:${ppi.pursePub}`; + } export function byPaymentProposalId(proposalId: string): string { return `${PendingTaskType.Purchase}:${proposalId}`; } diff --git a/packages/taler-wallet-core/src/wallet-api-types.ts b/packages/taler-wallet-core/src/wallet-api-types.ts index 3895c944d..093a1b15c 100644 --- a/packages/taler-wallet-core/src/wallet-api-types.ts +++ b/packages/taler-wallet-core/src/wallet-api-types.ts @@ -613,7 +613,7 @@ export type InitiatePeerPushPaymentOp = { /** * Check an incoming peer push payment. - * + * * FIXME: Rename to "PrepareIncomingPeerPushPayment" */ export type CheckPeerPushPaymentOp = { @@ -624,6 +624,8 @@ export type CheckPeerPushPaymentOp = { /** * Accept an incoming peer push payment. + * + * FIXME: Rename to ConfirmIncomingPeerPushPayment */ export type AcceptPeerPushPaymentOp = { op: WalletApiOperation.AcceptPeerPushPayment; @@ -633,7 +635,7 @@ export type AcceptPeerPushPaymentOp = { /** * Initiate an outgoing peer pull payment. - * + * * FIXME: This does not check anything, so rename to CheckPeerPullPaymentInitiation */ export type PreparePeerPullPaymentOp = { @@ -654,7 +656,7 @@ export type InitiatePeerPullPaymentOp = { /** * Prepare for an incoming peer pull payment. * - * FIXME: Rename to "PreparePeerPullPayment" + * FIXME: Rename to "PrepareIncomingPeerPullPayment" */ export type CheckPeerPullPaymentOp = { op: WalletApiOperation.CheckPeerPullPayment; @@ -665,7 +667,7 @@ export type CheckPeerPullPaymentOp = { /** * Accept an incoming peer pull payment (i.e. pay the other party). * - * FIXME: Rename to ConfirmPeerPullPayment + * FIXME: Rename to ConfirmIncomingPeerPullPayment */ export type AcceptPeerPullPaymentOp = { op: WalletApiOperation.AcceptPeerPullPayment; diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts index 0d02b667b..cbf11d84e 100644 --- a/packages/taler-wallet-core/src/wallet.ts +++ b/packages/taler-wallet-core/src/wallet.ts @@ -195,16 +195,17 @@ import { processPurchase, } from "./operations/pay-merchant.js"; import { - acceptPeerPullPayment, + acceptIncomingPeerPullPayment, acceptPeerPushPayment, - checkPeerPullPayment, + prepareIncomingPeerPullPayment, checkPeerPushPayment, initiatePeerPullPayment, initiatePeerPushPayment, - preparePeerPullPayment, + checkPeerPullPaymentInitiation, preparePeerPushPayment, processPeerPullInitiation, processPeerPushInitiation, + processPeerPullDebit, } from "./operations/pay-peer.js"; import { getPendingOperations } from "./operations/pending.js"; import { @@ -328,6 +329,8 @@ async function callOperationHandler( return await processPeerPushInitiation(ws, pending.pursePub); case PendingTaskType.PeerPullInitiation: return await processPeerPullInitiation(ws, pending.pursePub); + case PendingTaskType.PeerPullDebit: + return await processPeerPullDebit(ws, pending.peerPullPaymentIncomingId); default: return assertUnreachable(pending); } @@ -1440,7 +1443,7 @@ async function dispatchRequestInternal<Op extends WalletApiOperation>( } case WalletApiOperation.PreparePeerPullPayment: { const req = codecForPreparePeerPullPaymentRequest().decode(payload); - return await preparePeerPullPayment(ws, req); + return await checkPeerPullPaymentInitiation(ws, req); } case WalletApiOperation.InitiatePeerPullPayment: { const req = codecForInitiatePeerPullPaymentRequest().decode(payload); @@ -1448,11 +1451,11 @@ async function dispatchRequestInternal<Op extends WalletApiOperation>( } case WalletApiOperation.CheckPeerPullPayment: { const req = codecForCheckPeerPullPaymentRequest().decode(payload); - return await checkPeerPullPayment(ws, req); + return await prepareIncomingPeerPullPayment(ws, req); } case WalletApiOperation.AcceptPeerPullPayment: { const req = codecForAcceptPeerPullPaymentRequest().decode(payload); - return await acceptPeerPullPayment(ws, req); + return await acceptIncomingPeerPullPayment(ws, req); } case WalletApiOperation.ApplyDevExperiment: { const req = codecForApplyDevExperiment().decode(payload); |