4.1

1 files changed, 206 insertions, 0 deletions

diff --git a/zen/com_error.h b/zen/com_error.h
new file mode 100644
index 00000000..2ba76c0f
--- /dev/null
+++ b/zen/com_error.h
@@ -0,0 +1,206 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de)                    *
+// **************************************************************************
+
+#ifndef COM_ERROR_HEADER
+#define COM_ERROR_HEADER
+
+#include <string>
+#include <cstdio>
+#include "win.h" //includes "windows.h"
+
+namespace zen
+{
+std::wstring generateErrorMsg(const std::wstring& input, HRESULT hr);
+std::wstring formatWin32Msg(DWORD dwMessageId); //return empty string on error
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+//################# implementation #####################
+std::wstring formatWin32Msg(DWORD dwMessageId) //return empty string on error
+{
+    std::wstring output;
+    LPWSTR buffer = NULL;
+    if (::FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM    |
+                        FORMAT_MESSAGE_MAX_WIDTH_MASK |
+                        FORMAT_MESSAGE_IGNORE_INSERTS | //important: without this flag ::FormatMessage() will fail if message contains placeholders
+                        FORMAT_MESSAGE_ALLOCATE_BUFFER, NULL, dwMessageId, 0, reinterpret_cast<LPWSTR>(&buffer), 0, NULL) != 0)
+    {
+        if (buffer) //just to be sure
+        {
+            output = buffer;
+            ::LocalFree(buffer);
+        }
+    }
+    return output;
+}
+
+namespace
+{
+std::wstring formatFacility(HRESULT hr)
+{
+    switch (HRESULT_FACILITY(hr))
+    {
+        case FACILITY_XPS:
+            return L"XPS";
+        case FACILITY_WINRM:
+            return L"Windows Resource Manager";
+        case FACILITY_WINDOWSUPDATE:
+            return L"Windows Update";
+        case FACILITY_WINDOWS_DEFENDER:
+            return L"Windows Defender Component";
+        case FACILITY_WINDOWS_CE:
+            return L"Windows CE";
+        case FACILITY_WINDOWS:
+            return L"Windows Subsystem";
+        case FACILITY_USERMODE_VOLMGR:
+            return L"User Mode Volume Manager";
+        case FACILITY_USERMODE_VIRTUALIZATION:
+            return L"User Mode Virtualization Subsystem";
+        case FACILITY_USERMODE_VHD:
+            return L"User Mode Virtual Hard Disk Support";
+        case FACILITY_URT:
+            return L".NET CLR";
+        case FACILITY_UMI:
+            return L"Ubiquitous Memoryintrospection Service";
+        case FACILITY_UI:
+            return L"UI";
+        case FACILITY_TPM_SOFTWARE:
+            return L"Trusted Platform Module Applications";
+        case FACILITY_TPM_SERVICES:
+            return L"Trusted Platform Module Services";
+        case FACILITY_SXS:
+            return L"Side-by-side Servicing";
+        case FACILITY_STORAGE:
+            return L"OLE Storage";
+        case FACILITY_STATE_MANAGEMENT:
+            return L"State Management Services";
+        case FACILITY_SCARD:
+            return L"Smart-card Subsystem";
+        case FACILITY_SHELL:
+            return L"User Shell";
+        case FACILITY_SETUPAPI:
+            return L"Setup API";
+        case FACILITY_SECURITY:
+            return L"Security API Layer";
+        case FACILITY_SDIAG:
+            return L"System Diagnostics";
+        case FACILITY_RPC:
+            return L"RPC Subsystem";
+        case FACILITY_RAS:
+            return L"RAS";
+        case FACILITY_PLA:
+            return L"Performance Logs and Alerts";
+        case FACILITY_OPC:
+            return L"Open Connectivity Service";
+        case FACILITY_WIN32:
+            return L"Win32";
+        case FACILITY_CONTROL:
+            return L"Control Mechanism";
+        case FACILITY_WEBSERVICES:
+            return L"Web Services";
+        case FACILITY_NDIS:
+            return L"Network Driver Interface";
+        case FACILITY_METADIRECTORY:
+            return L"Microsoft Identity Server";
+        case FACILITY_MSMQ:
+            return L"Microsoft Message Queue";
+        case FACILITY_MEDIASERVER:
+            return L"Windows Media Server";
+        case FACILITY_MBN:
+            return L"MBN";
+        case FACILITY_INTERNET:
+            return L"Wininet";
+        case FACILITY_ITF:
+            return L"COM/OLE Interface Management";
+        case FACILITY_USERMODE_HYPERVISOR:
+            return L"Usermode Hypervisor Components";
+        case FACILITY_HTTP:
+            return L"HTTP Support";
+        case FACILITY_GRAPHICS:
+            return L"Graphics Drivers";
+        case FACILITY_FWP:
+            return L"Firewall Platform";
+        case FACILITY_FVE:
+            return L"Full volume encryption";
+        case FACILITY_USERMODE_FILTER_MANAGER:
+            return L"User Mode Filter Manager";
+        case FACILITY_DPLAY:
+            return L"Direct Play";
+        case FACILITY_DISPATCH:
+            return L"COM Dispatch";
+        case FACILITY_DIRECTORYSERVICE:
+            return L"Active Directory";
+        case FACILITY_CONFIGURATION:
+            return L"Configuration Services";
+        case FACILITY_COMPLUS:
+            return L"COM+";
+        case FACILITY_USERMODE_COMMONLOG:
+            return L"Common Logging Support";
+        case FACILITY_CMI:
+            return L"Configuration Management Infrastructure";
+        case FACILITY_CERT:
+            return L"Certificate";
+        case FACILITY_BCD:
+            return L"Boot Configuration Database";
+        case FACILITY_BACKGROUNDCOPY:
+            return L"Background Copy Control";
+        case FACILITY_ACS:
+            return L"Audit Collection Service";
+        case FACILITY_AAF:
+            return L"Microsoft Agent";
+        default:
+            return L"Unknown";
+    }
+}
+}
+
+inline
+std::wstring numberToHexString(long number)
+{
+    wchar_t result[100];
+    ::swprintf(result, 100, L"0x%08x", number);
+    return std::wstring(result);
+}
+
+
+inline
+std::wstring generateErrorMsg(const std::wstring& input, HRESULT hr)
+{
+    std::wstring output(input);
+    output += L"\n";
+    output += L"HRESULT: " + numberToHexString(hr) + L",\n";
+
+    //don't use _com_error(hr).ErrorMessage(): internally this is nothing more than a call to ::FormatMessage()
+    std::wstring win32Msg = formatWin32Msg(hr);
+    if (!win32Msg.empty())  //empty string on error
+        output += win32Msg;
+    else
+    {
+        output += L"Facility: " + formatFacility(hr) + L",\n";
+        output += L"Win32 Error: " + formatWin32Msg(HRESULT_CODE(hr)); //interpret hr as a Win32 code; this is often useful...
+    }
+    return output;
+}
+}
+#endif //COM_ERROR_HEADER