From 69f59af54d15ee9800d5df86bcdb0e962c71e7c3 Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Mon, 13 Jul 2020 03:01:57 +0000
Subject: [PATCH] Bugfix: Wallet: Soft-fail exceptions within ListWalletDir
 file checks

---
 src/wallet/walletutil.cpp | 39 ++++++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 17 deletions(-)

diff --git a/src/wallet/walletutil.cpp b/src/wallet/walletutil.cpp
index 2f3e597b90..6563c45134 100644
--- a/src/wallet/walletutil.cpp
+++ b/src/wallet/walletutil.cpp
@@ -49,26 +49,31 @@ std::vector<fs::path> ListWalletDir()
             continue;
         }
 
-        // Get wallet path relative to walletdir by removing walletdir from the wallet path.
-        // This can be replaced by boost::filesystem::lexically_relative once boost is bumped to 1.60.
-        const fs::path path = it->path().string().substr(offset);
+        try {
+            // Get wallet path relative to walletdir by removing walletdir from the wallet path.
+            // This can be replaced by boost::filesystem::lexically_relative once boost is bumped to 1.60.
+            const fs::path path = it->path().string().substr(offset);
 
-        if (it->status().type() == fs::directory_file &&
-            (ExistsBerkeleyDatabase(it->path()) || ExistsSQLiteDatabase(it->path()))) {
-            // Found a directory which contains wallet.dat btree file, add it as a wallet.
-            paths.emplace_back(path);
-        } else if (it.level() == 0 && it->symlink_status().type() == fs::regular_file && ExistsBerkeleyDatabase(it->path())) {
-            if (it->path().filename() == "wallet.dat") {
-                // Found top-level wallet.dat btree file, add top level directory ""
-                // as a wallet.
-                paths.emplace_back();
-            } else {
-                // Found top-level btree file not called wallet.dat. Current bitcoin
-                // software will never create these files but will allow them to be
-                // opened in a shared database environment for backwards compatibility.
-                // Add it to the list of available wallets.
+            if (it->status().type() == fs::directory_file &&
+                (ExistsBerkeleyDatabase(it->path()) || ExistsSQLiteDatabase(it->path()))) {
+                // Found a directory which contains wallet.dat btree file, add it as a wallet.
                 paths.emplace_back(path);
+            } else if (it.level() == 0 && it->symlink_status().type() == fs::regular_file && ExistsBerkeleyDatabase(it->path())) {
+                if (it->path().filename() == "wallet.dat") {
+                    // Found top-level wallet.dat btree file, add top level directory ""
+                    // as a wallet.
+                    paths.emplace_back();
+                } else {
+                    // Found top-level btree file not called wallet.dat. Current bitcoin
+                    // software will never create these files but will allow them to be
+                    // opened in a shared database environment for backwards compatibility.
+                    // Add it to the list of available wallets.
+                    paths.emplace_back(path);
+                }
             }
+        } catch (const std::exception& e) {
+            LogPrintf("%s: Error scanning %s: %s\n", __func__, it->path().string(), e.what());
+            it.no_push();
         }
     }