taler-typescript-core

commit 4144609f2619c558f642a1e4c847f6ceae1235f4
parent ebf29b9549b3c660111de409bf04fbd6102f9200
Author: Florian Dold <florian@dold.me>
Date:   Thu, 11 Dec 2025 12:40:57 +0100

wallet-core: new dev experiment for faking the exchange master public key

Diffstat:
M
packages/taler-wallet-core/src/dev-experiments.ts
 | 
18
++++++++++++++++++
M
packages/taler-wallet-core/src/exchanges.ts
 | 
20
++++++++++++++++++++
M
packages/taler-wallet-core/src/wallet.ts
 | 
9
++++++++-

3 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/packages/taler-wallet-core/src/dev-experiments.ts b/packages/taler-wallet-core/src/dev-experiments.ts
@@ -188,6 +188,24 @@ export async function applyDevExperiment(
       });
       return;
     }
+    case "start-fakemasterpub": {
+      const baseUrl = parsedUri.query?.get("base_url");
+      if (!baseUrl) {
+        throw Error("base_url required");
+      }
+      const fakePub = parsedUri.query?.get("fake_pub");
+      if (!fakePub) {
+        throw Error("fake_pub required");
+      }
+      let fakeSt = wex.ws.devExperimentState.fakeMasterPub;
+      if (!fakeSt) {
+        fakeSt = wex.ws.devExperimentState.fakeMasterPub = new Map();
+      }
+      fakeSt.set(baseUrl, {
+        fakeMasterPub: fakePub,
+      });
+      return;
+    }
     case "rebuild-transactions": {
       await wex.db.runAllStoresReadWriteTx({}, async (tx) => {
         // Re-build / fix up info about exchanges for purchase transactions.
diff --git a/packages/taler-wallet-core/src/exchanges.ts b/packages/taler-wallet-core/src/exchanges.ts
@@ -1514,6 +1514,17 @@ export async function waitReadyExchange(
           if (!options.forceUpdate) {
             ready = true;
           }
+          if (retryInfo && !options.noBail) {
+            const reason = retryInfo?.lastError ?? exchange.unavailableReason;
+            if (reason) {
+              throw TalerError.fromUncheckedDetail(reason);
+            } else {
+              // Unlikely, but could happen.
+              throw Error(
+                "updating exchange failed, error code unavailable (internal error, check logs)",
+              );
+            }
+          }
           break;
         case ExchangeEntryDbUpdateStatus.UnavailableUpdate: {
           if (!options.noBail) {
@@ -1838,6 +1849,15 @@ export async function updateExchangeFromUrlHandler(
       );
   }
 
+  {
+    const fakePub =
+      wex.ws.devExperimentState.fakeMasterPub?.get(exchangeBaseUrl);
+    if (fakePub) {
+      logger.warn("devexperiment: faking exchange pub");
+      keysInfoRes.res.masterPublicKey = fakePub.fakeMasterPub;
+    }
+  }
+
   const keysInfo = keysInfoRes.res;
 
   if (keysInfo.baseUrl != exchangeBaseUrl) {
diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts
@@ -256,7 +256,6 @@ import {
   codecForUserAttentionsRequest,
   codecForValidateIbanRequest,
   codecForWithdrawTestBalance,
-  constructIban,
   convertHUF_BBANtoIBAN,
   encodeCrock,
   getErrorDetailFromException,
@@ -2939,6 +2938,14 @@ export interface DevExperimentState {
     }
   >;
 
+  /** Map from base URL to faked version for /config or /keys */
+  fakeMasterPub?: Map<
+    string,
+    {
+      fakeMasterPub: string;
+    }
+  >;
+
   fakeShoppingUrl?: string;
 
   flagDisablePeerPayments?: boolean;