From e2213689328f8ba42af1d32d12c7b78a71f1ddc7 Mon Sep 17 00:00:00 2001
From: Chun Kuan Lee <ken2812221@gmail.com>
Date: Tue, 11 Sep 2018 02:08:56 +0800
Subject: [PATCH] utils: Convert fs error messages from multibyte to utf-8

---
 src/fs.cpp            | 16 ++++++++++++++++
 src/fs.h              |  2 ++
 src/rpc/protocol.cpp  |  2 +-
 src/wallet/db.cpp     |  2 +-
 src/wallet/wallet.cpp |  2 +-
 5 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/fs.cpp b/src/fs.cpp
index 2dbc13643..1a221788b 100644
--- a/src/fs.cpp
+++ b/src/fs.cpp
@@ -92,4 +92,20 @@ bool FileLock::TryLock()
 }
 #endif
 
+std::string get_filesystem_error_message(const fs::filesystem_error& e)
+{
+#ifndef WIN32
+    return e.what();
+#else
+    // Convert from Multi Byte to utf-16
+    std::string mb_string(e.what());
+    int size = MultiByteToWideChar(CP_ACP, 0, mb_string.c_str(), mb_string.size(), nullptr, 0);
+
+    std::wstring utf16_string(size, L'\0');
+    MultiByteToWideChar(CP_ACP, 0, mb_string.c_str(), mb_string.size(), &*utf16_string.begin(), size);
+    // Convert from utf-16 to utf-8
+    return std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t>().to_bytes(utf16_string);
+#endif
+}
+
 } // fsbridge
diff --git a/src/fs.h b/src/fs.h
index 5a28d9a81..5492bdd4e 100644
--- a/src/fs.h
+++ b/src/fs.h
@@ -38,6 +38,8 @@ namespace fsbridge {
         void* hFile = (void*)-1; // INVALID_HANDLE_VALUE
 #endif
     };
+
+    std::string get_filesystem_error_message(const fs::filesystem_error& e);
 };
 
 #endif // BITCOIN_FS_H
diff --git a/src/rpc/protocol.cpp b/src/rpc/protocol.cpp
index dab63ab26..55bebb566 100644
--- a/src/rpc/protocol.cpp
+++ b/src/rpc/protocol.cpp
@@ -128,7 +128,7 @@ void DeleteAuthCookie()
     try {
         fs::remove(GetAuthCookieFile());
     } catch (const fs::filesystem_error& e) {
-        LogPrintf("%s: Unable to remove random auth cookie file: %s\n", __func__, e.what());
+        LogPrintf("%s: Unable to remove random auth cookie file: %s\n", __func__, fsbridge::get_filesystem_error_message(e));
     }
 }
 
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
index dfd60ae5e..025ae2975 100644
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -783,7 +783,7 @@ bool BerkeleyDatabase::Backup(const std::string& strDest)
                     LogPrintf("copied %s to %s\n", strFile, pathDest.string());
                     return true;
                 } catch (const fs::filesystem_error& e) {
-                    LogPrintf("error copying %s to %s - %s\n", strFile, pathDest.string(), e.what());
+                    LogPrintf("error copying %s to %s - %s\n", strFile, pathDest.string(), fsbridge::get_filesystem_error_message(e));
                     return false;
                 }
             }
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index de707a09f..690c7936d 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -3849,7 +3849,7 @@ bool CWallet::Verify(std::string wallet_file, bool salvage_wallet, std::string&
             return false;
         }
     } catch (const fs::filesystem_error& e) {
-        error_string = strprintf("Error loading wallet %s. %s", wallet_file, e.what());
+        error_string = strprintf("Error loading wallet %s. %s", wallet_file, fsbridge::get_filesystem_error_message(e));
         return false;
     }