Give an error when rescan is aborted by the user

Author: achow101

src/wallet/rpcdump.cpp

@@ -172,7 +172,13 @@ UniValue importprivkey(const JSONRPCRequest& request)
         }
     }
     if (fRescan) {
-        pwallet->RescanFromTime(TIMESTAMP_MIN, reserver, true /* update */);
+        int64_t scanned_time = pwallet->RescanFromTime(TIMESTAMP_MIN, reserver, true /* update */);
+        if (pwallet->IsAbortingRescan()) {
+            throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
+        }
+        if (scanned_time > TIMESTAMP_MIN) {
+            throw JSONRPCError(RPC_WALLET_ERROR, "Rescan was unable to fully rescan the blockchain. Some transactions may be missing.");
+        }
     }
 
     return NullUniValue;
@@ -310,7 +316,13 @@ UniValue importaddress(const JSONRPCRequest& request)
     }
     if (fRescan)
     {
-        pwallet->RescanFromTime(TIMESTAMP_MIN, reserver, true /* update */);
+        int64_t scanned_time = pwallet->RescanFromTime(TIMESTAMP_MIN, reserver, true /* update */);
+        if (pwallet->IsAbortingRescan()) {
+            throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
+        }
+        if (scanned_time > TIMESTAMP_MIN) {
+            throw JSONRPCError(RPC_WALLET_ERROR, "Rescan was unable to fully rescan the blockchain. Some transactions may be missing.");
+        }
         pwallet->ReacceptWalletTransactions();
     }
 
@@ -479,7 +491,13 @@ UniValue importpubkey(const JSONRPCRequest& request)
     }
     if (fRescan)
     {
-        pwallet->RescanFromTime(TIMESTAMP_MIN, reserver, true /* update */);
+        int64_t scanned_time = pwallet->RescanFromTime(TIMESTAMP_MIN, reserver, true /* update */);
+        if (pwallet->IsAbortingRescan()) {
+            throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
+        }
+        if (scanned_time > TIMESTAMP_MIN) {
+            throw JSONRPCError(RPC_WALLET_ERROR, "Rescan was unable to fully rescan the blockchain. Some transactions may be missing.");
+        }
         pwallet->ReacceptWalletTransactions();
     }
 
@@ -604,7 +622,14 @@ UniValue importwallet(const JSONRPCRequest& request)
         uiInterface.ShowProgress("", 100, false); // hide progress dialog in GUI
         pwallet->UpdateTimeFirstKey(nTimeBegin);
     }
-    pwallet->RescanFromTime(nTimeBegin, reserver, false /* update */);
+    uiInterface.ShowProgress("", 100, false); // hide progress dialog in GUI
+    int64_t scanned_time = pwallet->RescanFromTime(nTimeBegin, reserver, false /* update */);
+    if (pwallet->IsAbortingRescan()) {
+        throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
+    }
+    if (scanned_time > nTimeBegin) {
+        throw JSONRPCError(RPC_WALLET_ERROR, "Rescan was unable to fully rescan the blockchain. Some transactions may be missing.");
+    }
     pwallet->MarkDirty();
 
     if (!fGood)
@@ -1214,6 +1239,9 @@ UniValue importmulti(const JSONRPCRequest& mainRequest)
         int64_t scannedTime = pwallet->RescanFromTime(nLowestTimestamp, reserver, true /* update */);
         pwallet->ReacceptWalletTransactions();
 
+        if (pwallet->IsAbortingRescan()) {
+            throw JSONRPCError(RPC_MISC_ERROR, "Rescan aborted by user.");
+        }
         if (scannedTime > nLowestTimestamp) {
             std::vector<UniValue> results = response.getValues();
             response.clear();