Reject duplicate wallet filenames

1 files changed, 12 insertions, 1 deletions

diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 3e9c531f00..ccf5353eb7 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -468,13 +468,24 @@ bool CWallet::Verify()
 
     uiInterface.InitMessage(_("Verifying wallet(s)..."));
 
+    // Keep track of each wallet absolute path to detect duplicates.
+    std::set<fs::path> wallet_paths;
+
     for (const std::string& walletFile : gArgs.GetArgs("-wallet")) {
         if (boost::filesystem::path(walletFile).filename() != walletFile) {
             return InitError(_("-wallet parameter must only specify a filename (not a path)"));
-        } else if (SanitizeString(walletFile, SAFE_CHARS_FILENAME) != walletFile) {
+        }
+
+        if (SanitizeString(walletFile, SAFE_CHARS_FILENAME) != walletFile) {
             return InitError(_("Invalid characters in -wallet filename"));
         }
 
+        fs::path wallet_path = fs::absolute(walletFile, GetDataDir());
+
+        if (!wallet_paths.insert(wallet_path).second) {
+            return InitError(_("Duplicate -wallet filename"));
+        }
+
         std::string strError;
         if (!CWalletDB::VerifyEnvironment(walletFile, GetDataDir().string(), strError)) {
             return InitError(strError);