fix tipping and adjust DB

13 files changed, 167 insertions, 174 deletions

diff --git a/packages/taler-integrationtests/src/test-tipping.ts b/packages/taler-integrationtests/src/test-tipping.ts
index ddf56c0e0..f7840f5da 100644
--- a/packages/taler-integrationtests/src/test-tipping.ts
+++ b/packages/taler-integrationtests/src/test-tipping.ts
@@ -94,13 +94,19 @@ runTest(async (t: GlobalTestState) => {
 
   console.log(ptr);
 
+  t.assertAmountEquals(ptr.tipAmountRaw, "TESTKUDOS:5");
+  t.assertAmountEquals(ptr.tipAmountEffective, "TESTKUDOS:4.85");
+
   await wallet.acceptTip({
     walletTipId: ptr.walletTipId,
   });
 
+
   await wallet.runUntilDone();
 
   const bal = await wallet.getBalances();
 
   console.log(bal);
+
+  t.assertAmountEquals(bal.balances[0].available, "TESTKUDOS:4.85");
 });
diff --git a/packages/taler-wallet-core/src/TalerErrorCode.ts b/packages/taler-wallet-core/src/TalerErrorCode.ts
index 8a020b9da..e1f777f25 100644
--- a/packages/taler-wallet-core/src/TalerErrorCode.ts
+++ b/packages/taler-wallet-core/src/TalerErrorCode.ts
@@ -22,6 +22,8 @@
  */
 
 export enum TalerErrorCode {
+
+
   /**
    * Special code to indicate no error (or no "code" present).
    * Returned with an HTTP status code of #MHD_HTTP_UNINITIALIZED (0).
@@ -3271,9 +3273,17 @@ export enum TalerErrorCode {
   WALLET_WITHDRAWAL_GROUP_INCOMPLETE = 7015,
 
   /**
+   * The signature on a coin by the exchange's denomination key (obtained through the merchant via tipping) is invalid after unblinding it.
+   * Returned with an HTTP status code of #MHD_HTTP_UNINITIALIZED (0).
+   * (A value of 0 indicates that the error is generated client-side).
+   */
+  WALLET_TIPPING_COIN_SIGNATURE_INVALID = 7016,
+
+  /**
    * End of error code range.
    * Returned with an HTTP status code of #MHD_HTTP_UNINITIALIZED (0).
    * (A value of 0 indicates that the error is generated client-side).
    */
   END = 9999,
+
 }
diff --git a/packages/taler-wallet-core/src/operations/pending.ts b/packages/taler-wallet-core/src/operations/pending.ts
index 91a55c705..7dda1214d 100644
--- a/packages/taler-wallet-core/src/operations/pending.ts
+++ b/packages/taler-wallet-core/src/operations/pending.ts
@@ -286,7 +286,6 @@ async function gatherWithdrawalPending(
       givesLifeness: true,
       numCoinsTotal,
       numCoinsWithdrawn,
-      source: wsr.source,
       withdrawalGroupId: wsr.withdrawalGroupId,
       lastError: wsr.lastError,
       retryInfo: wsr.retryInfo,
diff --git a/packages/taler-wallet-core/src/operations/reserves.ts b/packages/taler-wallet-core/src/operations/reserves.ts
index 69942fe94..b4fa3b23e 100644
--- a/packages/taler-wallet-core/src/operations/reserves.ts
+++ b/packages/taler-wallet-core/src/operations/reserves.ts
@@ -818,10 +818,7 @@ async function depleteReserve(
       const withdrawalRecord: WithdrawalGroupRecord = {
         withdrawalGroupId: withdrawalGroupId,
         exchangeBaseUrl: newReserve.exchangeBaseUrl,
-        source: {
-          type: WithdrawalSourceType.Reserve,
-          reservePub: newReserve.reservePub,
-        },
+        reservePub: newReserve.reservePub,
         rawWithdrawalAmount: withdrawAmount,
         timestampStart: getTimestampNow(),
         retryInfo: initRetryInfo(),
diff --git a/packages/taler-wallet-core/src/operations/tip.ts b/packages/taler-wallet-core/src/operations/tip.ts
index 6fe374bf0..6ccd262b0 100644
--- a/packages/taler-wallet-core/src/operations/tip.ts
+++ b/packages/taler-wallet-core/src/operations/tip.ts
@@ -31,6 +31,9 @@ import {
   updateRetryInfoTimeout,
   WithdrawalSourceType,
   TipPlanchet,
+  CoinRecord,
+  CoinSourceType,
+  CoinStatus,
 } from "../types/dbTypes";
 import {
   getExchangeWithdrawalInfo,
@@ -40,13 +43,14 @@ import {
 } from "./withdraw";
 import { updateExchangeFromUrl } from "./exchanges";
 import { getRandomBytes, encodeCrock } from "../crypto/talerCrypto";
-import { guardOperationException } from "./errors";
+import { guardOperationException, makeErrorDetails } from "./errors";
 import { NotificationType } from "../types/notifications";
 import { getTimestampNow } from "../util/time";
 import { readSuccessResponseJsonOrThrow } from "../util/http";
 import { URL } from "../util/url";
 import { Logger } from "../util/logging";
 import { checkDbInvariant } from "../util/invariants";
+import { TalerErrorCode } from "../TalerErrorCode";
 
 const logger = new Logger("operations/tip.ts");
 
@@ -99,7 +103,7 @@ export async function prepareTip(
       walletTipId: walletTipId,
       acceptedTimestamp: undefined,
       rejectedTimestamp: undefined,
-      amount,
+      tipAmountRaw: amount,
       deadline: tipPickupStatus.expiration,
       exchangeUrl: tipPickupStatus.exchange_url,
       merchantBaseUrl: res.merchantBaseUrl,
@@ -109,10 +113,10 @@ export async function prepareTip(
       response: undefined,
       createdTimestamp: getTimestampNow(),
       merchantTipId: res.merchantTipId,
-      totalFees: Amounts.add(
+      tipAmountEffective: Amounts.sub(amount, Amounts.add(
         withdrawDetails.overhead,
         withdrawDetails.withdrawFee,
-      ).amount,
+      ).amount).amount,
       retryInfo: initRetryInfo(),
       lastError: undefined,
       denomsSel: denomSelectionInfoToState(selectedDenoms),
@@ -122,10 +126,10 @@ export async function prepareTip(
 
   const tipStatus: PrepareTipResult = {
     accepted: !!tipRecord && !!tipRecord.acceptedTimestamp,
-    amount: Amounts.stringify(tipPickupStatus.tip_amount),
+    tipAmountRaw: Amounts.stringify(tipPickupStatus.tip_amount),
     exchangeBaseUrl: tipPickupStatus.exchange_url,
     expirationTimestamp: tipPickupStatus.expiration,
-    totalFees: Amounts.stringify(tipRecord.totalFees),
+    tipAmountEffective: Amounts.stringify(tipRecord.tipAmountEffective),
     walletTipId: tipRecord.walletTipId,
   };
 
@@ -182,13 +186,13 @@ async function resetTipRetry(
 
 async function processTipImpl(
   ws: InternalWalletState,
-  tipId: string,
+  walletTipId: string,
   forceNow: boolean,
 ): Promise<void> {
   if (forceNow) {
-    await resetTipRetry(ws, tipId);
+    await resetTipRetry(ws, walletTipId);
   }
-  let tipRecord = await ws.db.get(Stores.tips, tipId);
+  let tipRecord = await ws.db.get(Stores.tips, walletTipId);
   if (!tipRecord) {
     return;
   }
@@ -216,7 +220,7 @@ async function processTipImpl(
         planchets.push(r);
       }
     }
-    await ws.db.mutate(Stores.tips, tipId, (r) => {
+    await ws.db.mutate(Stores.tips, walletTipId, (r) => {
       if (!r.planchets) {
         r.planchets = planchets;
       }
@@ -224,7 +228,7 @@ async function processTipImpl(
     });
   }
 
-  tipRecord = await ws.db.get(Stores.tips, tipId);
+  tipRecord = await ws.db.get(Stores.tips, walletTipId);
   checkDbInvariant(!!tipRecord, "tip record should be in database");
   checkDbInvariant(!!tipRecord.planchets, "tip record should have planchets");
 
@@ -246,55 +250,68 @@ async function processTipImpl(
     codecForTipResponse(),
   );
 
-  if (response.reserve_sigs.length !== tipRecord.planchets.length) {
+  if (response.blind_sigs.length !== tipRecord.planchets.length) {
     throw Error("number of tip responses does not match requested planchets");
   }
 
-  const withdrawalGroupId = encodeCrock(getRandomBytes(32));
-  const planchets: PlanchetRecord[] = [];
-
-  for (let i = 0; i < tipRecord.planchets.length; i++) {
-    const tipPlanchet = tipRecord.planchets[i];
-    const coinEvHash = await ws.cryptoApi.hashEncoded(tipPlanchet.coinEv);
-    const planchet: PlanchetRecord = {
-      blindingKey: tipPlanchet.blindingKey,
-      coinEv: tipPlanchet.coinEv,
-      coinPriv: tipPlanchet.coinPriv,
-      coinPub: tipPlanchet.coinPub,
-      coinValue: tipPlanchet.coinValue,
-      denomPub: tipPlanchet.denomPub,
-      denomPubHash: tipPlanchet.denomPubHash,
-      reservePub: response.reserve_pub,
-      withdrawSig: response.reserve_sigs[i].reserve_sig,
-      isFromTip: true,
-      coinEvHash,
-      coinIdx: i,
-      withdrawalDone: false,
-      withdrawalGroupId: withdrawalGroupId,
-      lastError: undefined,
-    };
-    planchets.push(planchet);
-  }
+  const newCoinRecords: CoinRecord[] = [];
 
-  const withdrawalGroup: WithdrawalGroupRecord = {
-    exchangeBaseUrl: tipRecord.exchangeUrl,
-    source: {
-      type: WithdrawalSourceType.Tip,
-      tipId: tipRecord.walletTipId,
-    },
-    timestampStart: getTimestampNow(),
-    withdrawalGroupId: withdrawalGroupId,
-    rawWithdrawalAmount: tipRecord.amount,
-    retryInfo: initRetryInfo(),
-    timestampFinish: undefined,
-    lastError: undefined,
-    denomsSel: tipRecord.denomsSel,
-  };
+  for (let i = 0; i < response.blind_sigs.length; i++) {
+    const blindedSig = response.blind_sigs[i].blind_sig;
+
+    const planchet = tipRecord.planchets[i];
+
+    const denomSig = await ws.cryptoApi.rsaUnblind(
+      blindedSig,
+      planchet.blindingKey,
+      planchet.denomPub,
+    );
+
+    const isValid = await ws.cryptoApi.rsaVerify(
+      planchet.coinPub,
+      denomSig,
+      planchet.denomPub,
+    );
+
+    if (!isValid) {
+      await ws.db.runWithWriteTransaction([Stores.planchets], async (tx) => {
+        const tipRecord = await tx.get(Stores.tips, walletTipId);
+        if (!tipRecord) {
+          return;
+        }
+        tipRecord.lastError = makeErrorDetails(
+          TalerErrorCode.WALLET_TIPPING_COIN_SIGNATURE_INVALID,
+          "invalid signature from the exchange (via merchant tip) after unblinding",
+          {},
+        );
+        await tx.put(Stores.tips, tipRecord);
+      });
+      return;
+    }
+
+    newCoinRecords.push({
+      blindingKey: planchet.blindingKey,
+      coinPriv: planchet.coinPriv,
+      coinPub: planchet.coinPub,
+      coinSource: {
+        type: CoinSourceType.Tip,
+        coinIndex: i,
+        walletTipId: walletTipId,
+      },
+      currentAmount: planchet.coinValue,
+      denomPub: planchet.denomPub,
+      denomPubHash: planchet.denomPubHash,
+      denomSig: denomSig,
+      exchangeBaseUrl: tipRecord.exchangeUrl,
+      status: CoinStatus.Fresh,
+      suspended: false,
+    });
+  }
 
   await ws.db.runWithWriteTransaction(
-    [Stores.tips, Stores.withdrawalGroups],
+    [Stores.coins, Stores.tips, Stores.withdrawalGroups],
     async (tx) => {
-      const tr = await tx.get(Stores.tips, tipId);
+      const tr = await tx.get(Stores.tips, walletTipId);
       if (!tr) {
         return;
       }
@@ -303,16 +320,12 @@ async function processTipImpl(
       }
       tr.pickedUp = true;
       tr.retryInfo = initRetryInfo(false);
-
       await tx.put(Stores.tips, tr);
-      await tx.put(Stores.withdrawalGroups, withdrawalGroup);
-      for (const p of planchets) {
-        await tx.put(Stores.planchets, p);
+      for (const cr of newCoinRecords) {
+        await tx.put(Stores.coins, cr);
       }
     },
   );
-
-  await processWithdrawGroup(ws, withdrawalGroupId);
 }
 
 export async function acceptTip(
diff --git a/packages/taler-wallet-core/src/operations/transactions.ts b/packages/taler-wallet-core/src/operations/transactions.ts
index 7a3228422..b5f77a190 100644
--- a/packages/taler-wallet-core/src/operations/transactions.ts
+++ b/packages/taler-wallet-core/src/operations/transactions.ts
@@ -116,63 +116,49 @@ export async function getTransactions(
           return;
         }
 
-        switch (wsr.source.type) {
-          case WithdrawalSourceType.Reserve:
-            {
-              const r = await tx.get(Stores.reserves, wsr.source.reservePub);
-              if (!r) {
-                break;
-              }
-              let amountRaw: AmountJson | undefined = undefined;
-              if (wsr.withdrawalGroupId === r.initialWithdrawalGroupId) {
-                amountRaw = r.instructedAmount;
-              } else {
-                amountRaw = wsr.denomsSel.totalWithdrawCost;
-              }
-              let withdrawalDetails: WithdrawalDetails;
-              if (r.bankInfo) {
-                withdrawalDetails = {
-                  type: WithdrawalType.TalerBankIntegrationApi,
-                  confirmed: true,
-                  bankConfirmationUrl: r.bankInfo.confirmUrl,
-                };
-              } else {
-                const exchange = await tx.get(
-                  Stores.exchanges,
-                  r.exchangeBaseUrl,
-                );
-                if (!exchange) {
-                  // FIXME: report somehow
-                  break;
-                }
-                withdrawalDetails = {
-                  type: WithdrawalType.ManualTransfer,
-                  exchangePaytoUris:
-                    exchange.wireInfo?.accounts.map((x) => x.payto_uri) ?? [],
-                };
-              }
-              transactions.push({
-                type: TransactionType.Withdrawal,
-                amountEffective: Amounts.stringify(
-                  wsr.denomsSel.totalCoinValue,
-                ),
-                amountRaw: Amounts.stringify(amountRaw),
-                withdrawalDetails,
-                exchangeBaseUrl: wsr.exchangeBaseUrl,
-                pending: !wsr.timestampFinish,
-                timestamp: wsr.timestampStart,
-                transactionId: makeEventId(
-                  TransactionType.Withdrawal,
-                  wsr.withdrawalGroupId,
-                ),
-                ...(wsr.lastError ? { error: wsr.lastError } : {}),
-              });
-            }
-            break;
-          default:
-            // Tips are reported via their own event
-            break;
+        const r = await tx.get(Stores.reserves, wsr.reservePub);
+        if (!r) {
+          return;
+        }
+        let amountRaw: AmountJson | undefined = undefined;
+        if (wsr.withdrawalGroupId === r.initialWithdrawalGroupId) {
+          amountRaw = r.instructedAmount;
+        } else {
+          amountRaw = wsr.denomsSel.totalWithdrawCost;
+        }
+        let withdrawalDetails: WithdrawalDetails;
+        if (r.bankInfo) {
+          withdrawalDetails = {
+            type: WithdrawalType.TalerBankIntegrationApi,
+            confirmed: true,
+            bankConfirmationUrl: r.bankInfo.confirmUrl,
+          };
+        } else {
+          const exchange = await tx.get(Stores.exchanges, r.exchangeBaseUrl);
+          if (!exchange) {
+            // FIXME: report somehow
+            return;
+          }
+          withdrawalDetails = {
+            type: WithdrawalType.ManualTransfer,
+            exchangePaytoUris:
+              exchange.wireInfo?.accounts.map((x) => x.payto_uri) ?? [],
+          };
         }
+        transactions.push({
+          type: TransactionType.Withdrawal,
+          amountEffective: Amounts.stringify(wsr.denomsSel.totalCoinValue),
+          amountRaw: Amounts.stringify(amountRaw),
+          withdrawalDetails,
+          exchangeBaseUrl: wsr.exchangeBaseUrl,
+          pending: !wsr.timestampFinish,
+          timestamp: wsr.timestampStart,
+          transactionId: makeEventId(
+            TransactionType.Withdrawal,
+            wsr.withdrawalGroupId,
+          ),
+          ...(wsr.lastError ? { error: wsr.lastError } : {}),
+        });
       });
 
       // Report pending withdrawals based on reserves that
diff --git a/packages/taler-wallet-core/src/operations/withdraw.ts b/packages/taler-wallet-core/src/operations/withdraw.ts
index 4070e39f4..eec92ba29 100644
--- a/packages/taler-wallet-core/src/operations/withdraw.ts
+++ b/packages/taler-wallet-core/src/operations/withdraw.ts
@@ -242,12 +242,9 @@ async function processPlanchetGenerate(
     if (!denom) {
       throw Error("invariant violated");
     }
-    if (withdrawalGroup.source.type != WithdrawalSourceType.Reserve) {
-      throw Error("invariant violated");
-    }
     const reserve = await ws.db.get(
       Stores.reserves,
-      withdrawalGroup.source.reservePub,
+      withdrawalGroup.reservePub,
     );
     if (!reserve) {
       throw Error("invariant violated");
@@ -420,7 +417,7 @@ async function processPlanchetVerifyAndStoreCoin(
 
   if (!isValid) {
     await ws.db.runWithWriteTransaction([Stores.planchets], async (tx) => {
-      let planchet = await ws.db.getIndexed(Stores.planchets.byGroupAndIndex, [
+      let planchet = await tx.getIndexed(Stores.planchets.byGroupAndIndex, [
         withdrawalGroupId,
         coinIdx,
       ]);
@@ -700,7 +697,7 @@ async function processWithdrawGroupImpl(
   if (finishedForFirstTime) {
     ws.notify({
       type: NotificationType.WithdrawGroupFinished,
-      withdrawalSource: withdrawalGroup.source,
+      reservePub: withdrawalGroup.reservePub,
     });
   }
 }
diff --git a/packages/taler-wallet-core/src/types/dbTypes.ts b/packages/taler-wallet-core/src/types/dbTypes.ts
index 4e2ba1bb4..3e24f787b 100644
--- a/packages/taler-wallet-core/src/types/dbTypes.ts
+++ b/packages/taler-wallet-core/src/types/dbTypes.ts
@@ -694,17 +694,28 @@ export interface PlanchetRecord {
   lastError: TalerErrorDetails | undefined;
 
   /**
-   * Public key of the reserve, this might be a reserve not
-   * known to the wallet if the planchet is from a tip.
+   * Public key of the reserve that this planchet
+   * is being withdrawn from.
+   * 
+   * Can be the empty string (non-null/undefined for DB indexing)
+   * if this is a tipping reserve.
    */
   reservePub: string;
+
   denomPubHash: string;
+
   denomPub: string;
+
   blindingKey: string;
+
   withdrawSig: string;
+
   coinEv: string;
+
   coinEvHash: string;
+
   coinValue: AmountJson;
+
   isFromTip: boolean;
 }
 
@@ -772,6 +783,8 @@ export interface RefreshCoinSource {
 
 export interface TipCoinSource {
   type: CoinSourceType.Tip;
+  walletTipId: string;
+  coinIndex: number;
 }
 
 export type CoinSource = WithdrawCoinSource | RefreshCoinSource | TipCoinSource;
@@ -950,9 +963,9 @@ export interface TipRecord {
   /**
    * The tipped amount.
    */
-  amount: AmountJson;
+  tipAmountRaw: AmountJson;
 
-  totalFees: AmountJson;
+  tipAmountEffective: AmountJson;
 
   /**
    * Timestamp, the tip can't be picked up anymore after this deadline.
@@ -1481,18 +1494,6 @@ export enum WithdrawalSourceType {
   Reserve = "reserve",
 }
 
-export interface WithdrawalSourceTip {
-  type: WithdrawalSourceType.Tip;
-  tipId: string;
-}
-
-export interface WithdrawalSourceReserve {
-  type: WithdrawalSourceType.Reserve;
-  reservePub: string;
-}
-
-export type WithdrawalSource = WithdrawalSourceTip | WithdrawalSourceReserve;
-
 export interface DenominationSelectionInfo {
   totalCoinValue: AmountJson;
   totalWithdrawCost: AmountJson;
@@ -1524,12 +1525,7 @@ export interface DenomSelectionState {
 export interface WithdrawalGroupRecord {
   withdrawalGroupId: string;
 
-  /**
-   * Withdrawal source.  Fields that don't apply to the respective
-   * withdrawal source type must be null (i.e. can't be absent),
-   * otherwise the IndexedDB indexing won't like us.
-   */
-  source: WithdrawalSource;
+  reservePub: string;
 
   exchangeBaseUrl: string;
 
diff --git a/packages/taler-wallet-core/src/types/notifications.ts b/packages/taler-wallet-core/src/types/notifications.ts
index e1b9a7aff..d86c5ae59 100644
--- a/packages/taler-wallet-core/src/types/notifications.ts
+++ b/packages/taler-wallet-core/src/types/notifications.ts
@@ -23,7 +23,6 @@
  * Imports.
  */
 import { TalerErrorDetails } from "./walletTypes";
-import { WithdrawalSource } from "./dbTypes";
 import { ReserveHistorySummary } from "../util/reserveHistoryUtil";
 
 export enum NotificationType {
@@ -141,7 +140,7 @@ export interface WithdrawalGroupCreatedNotification {
 
 export interface WithdrawalGroupFinishedNotification {
   type: NotificationType.WithdrawGroupFinished;
-  withdrawalSource: WithdrawalSource;
+  reservePub: string;
 }
 
 export interface WaitingForRetryNotification {
diff --git a/packages/taler-wallet-core/src/types/pending.ts b/packages/taler-wallet-core/src/types/pending.ts
index d07754fe9..b14872d74 100644
--- a/packages/taler-wallet-core/src/types/pending.ts
+++ b/packages/taler-wallet-core/src/types/pending.ts
@@ -22,7 +22,7 @@
  * Imports.
  */
 import { TalerErrorDetails, BalancesResponse } from "./walletTypes";
-import { WithdrawalSource, RetryInfo, ReserveRecordStatus } from "./dbTypes";
+import { RetryInfo, ReserveRecordStatus } from "./dbTypes";
 import { Timestamp, Duration } from "../util/time";
 
 export enum PendingOperationType {
@@ -219,7 +219,6 @@ export interface PendingRecoupOperation {
  */
 export interface PendingWithdrawOperation {
   type: PendingOperationType.Withdraw;
-  source: WithdrawalSource;
   lastError: TalerErrorDetails | undefined;
   retryInfo: RetryInfo;
   withdrawalGroupId: string;
diff --git a/packages/taler-wallet-core/src/types/talerTypes.ts b/packages/taler-wallet-core/src/types/talerTypes.ts
index 52dc4cb62..16d00e2ea 100644
--- a/packages/taler-wallet-core/src/types/talerTypes.ts
+++ b/packages/taler-wallet-core/src/types/talerTypes.ts
@@ -593,11 +593,11 @@ export interface TipPickupRequest {
  * Reserve signature, defined as separate class to facilitate
  * schema validation with "@Checkable".
  */
-export class ReserveSigSingleton {
+export class BlindSigWrapper {
   /**
    * Reserve signature.
    */
-  reserve_sig: string;
+  blind_sig: string;
 }
 
 /**
@@ -606,14 +606,9 @@ export class ReserveSigSingleton {
  */
 export class TipResponse {
   /**
-   * Public key of the reserve
-   */
-  reserve_pub: string;
-
-  /**
    * The order of the signatures matches the planchets list.
    */
-  reserve_sigs: ReserveSigSingleton[];
+  blind_sigs: BlindSigWrapper[];
 }
 
 /**
@@ -1166,15 +1161,14 @@ export const codecForMerchantRefundResponse = (): Codec<
     .property("refunds", codecForList(codecForMerchantRefundPermission()))
     .build("MerchantRefundResponse");
 
-export const codecForReserveSigSingleton = (): Codec<ReserveSigSingleton> =>
-  buildCodecForObject<ReserveSigSingleton>()
-    .property("reserve_sig", codecForString())
-    .build("ReserveSigSingleton");
+export const codecForBlindSigWrapper = (): Codec<BlindSigWrapper> =>
+  buildCodecForObject<BlindSigWrapper>()
+    .property("blind_sig", codecForString())
+    .build("BlindSigWrapper");
 
 export const codecForTipResponse = (): Codec<TipResponse> =>
   buildCodecForObject<TipResponse>()
-    .property("reserve_pub", codecForString())
-    .property("reserve_sigs", codecForList(codecForReserveSigSingleton()))
+    .property("blind_sigs", codecForList(codecForBlindSigWrapper()))
     .build("TipResponse");
 
 export const codecForRecoup = (): Codec<Recoup> =>
diff --git a/packages/taler-wallet-core/src/types/walletTypes.ts b/packages/taler-wallet-core/src/types/walletTypes.ts
index fb049caf9..c9014830b 100644
--- a/packages/taler-wallet-core/src/types/walletTypes.ts
+++ b/packages/taler-wallet-core/src/types/walletTypes.ts
@@ -359,8 +359,8 @@ export interface PrepareTipResult {
    * Has the tip already been accepted?
    */
   accepted: boolean;
-  amount: AmountString;
-  totalFees: AmountString;
+  tipAmountRaw: AmountString;
+  tipAmountEffective: AmountString;
   exchangeBaseUrl: string;
   expirationTimestamp: Timestamp;
 }
@@ -368,8 +368,8 @@ export interface PrepareTipResult {
 export const codecForPrepareTipResult = (): Codec<PrepareTipResult> =>
   buildCodecForObject<PrepareTipResult>()
      .property("accepted", codecForBoolean())
-     .property("amount", codecForAmountString())
-     .property("totalFees", codecForAmountString())
+     .property("tipAmountRaw", codecForAmountString())
+     .property("tipAmountEffective", codecForAmountString())
      .property("exchangeBaseUrl", codecForString())
      .property("expirationTimestamp", codecForTimestamp)
      .property("walletTipId", codecForString())
diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts
index 0507ac8b2..cd9646339 100644
--- a/packages/taler-wallet-core/src/wallet.ts
+++ b/packages/taler-wallet-core/src/wallet.ts
@@ -86,7 +86,6 @@ import {
   codecForPreparePayRequest,
   codecForIntegrationTestArgs,
   WithdrawTestBalanceRequest,
-  withdrawTestBalanceDefaults,
   codecForWithdrawTestBalance,
   codecForTestPayArgs,
   codecForSetCoinSuspendedRequest,
@@ -916,9 +915,7 @@ export class Wallet {
           console.error("no withdrawal session found for coin");
           continue;
         }
-        if (ws.source.type == "reserve") {
-          withdrawalReservePub = ws.source.reservePub;
-        }
+        withdrawalReservePub = ws.reservePub;
       }
       coinsJson.coins.push({
         coin_pub: c.coinPub,