From 0364ba8a9a9a27a353a7f3a4ca244793dad7dd61 Mon Sep 17 00:00:00 2001
From: codemaestro64 <code.maestro64@gmail.com>
Date: Sun, 24 May 2020 12:20:28 +0100
Subject: [PATCH] prevent more than one wallet from using the same seed

---
 errors.go      | 1 +
 multiwallet.go | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/errors.go b/errors.go
index 476e42e1..5636aacd 100644
--- a/errors.go
+++ b/errors.go
@@ -30,6 +30,7 @@ const (
 	ErrLoggerAlreadyRegistered      = "logger_already_registered"
 	ErrLogRotatorAlreadyInitialized = "log_rotator_already_initialized"
 	ErrAddressDiscoveryNotDone      = "address_discovery_not_done"
+	ErrSeedExists                   = "wallet_seed_exists"
 )
 
 // todo, should update this method to translate more error kinds.
diff --git a/multiwallet.go b/multiwallet.go
index a8041fa5..59ff1843 100644
--- a/multiwallet.go
+++ b/multiwallet.go
@@ -388,6 +388,14 @@ func (mw *MultiWallet) saveNewWallet(wallet *Wallet, setupWallet func() error) (
 		return nil, errors.New(ErrExist)
 	}
 
+	// Check if any of the other wallets has the same seed with this wallet
+	// If so, return an error 
+	for _, wal := range mw.wallets {
+		if wal.Seed == wallet.Seed {
+			return nil, errors.New(ErrSeedExists)
+		}
+	}
+
 	// Perform database save operations in batch transaction
 	// for automatic rollback if error occurs at any point.
 	err = mw.batchDbTransaction(func(db storm.Node) error {