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Fixed is_library_file() for older Windows versions.
[mutilities/MUtilities.git] / src / OSSupport_Win32.cpp
index 7822808..ce2dd35 100644 (file)
@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 // MuldeR's Utilities for Qt
-// Copyright (C) 2004-2015 LoRd_MuldeR <MuldeR2@GMX.de>
+// Copyright (C) 2004-2016 LoRd_MuldeR <MuldeR2@GMX.de>
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 #include <ShlObj.h>
 #pragma warning(pop)
 
+//CRT
+#include <io.h>
+
 //Internal
 #include <MUtils/Global.h>
 #include <MUtils/OSSupport.h>
 #include <MUtils/GUI.h>
 #include "CriticalSection_Win32.h"
+#include "Utils_Win32.h"
 
 //Qt
 #include <QMap>
 #include <QReadWriteLock>
-#include <QLibrary>
 #include <QDir>
 #include <QWidget>
 #include <QProcess>
@@ -483,17 +486,8 @@ static QReadWriteLock g_wine_lock;
 
 static const bool detect_wine(void)
 {
-       bool is_wine = false;
-       
-       QLibrary ntdll("ntdll.dll");
-       if(ntdll.load())
-       {
-               if(ntdll.resolve("wine_nt_to_unix_file_name") != NULL) is_wine = true;
-               if(ntdll.resolve("wine_get_version")          != NULL) is_wine = true;
-               ntdll.unload();
-       }
-
-       return is_wine;
+       void *const ptr = MUtils::Win32Utils::resolve<void*>(QLatin1String("ntdll"), QLatin1String("wine_get_version"));
+       return (ptr != NULL);
 }
 
 const bool &MUtils::OS::running_on_wine(void)
@@ -528,11 +522,9 @@ const bool &MUtils::OS::running_on_wine(void)
 
 typedef QMap<size_t, QString> KFMap;
 typedef HRESULT (WINAPI *SHGetKnownFolderPath_t)(const GUID &rfid, DWORD dwFlags, HANDLE hToken, PWSTR *ppszPath);
-typedef HRESULT (WINAPI *SHGetFolderPath_t)(HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
+typedef HRESULT (WINAPI *SHGetFolderPath_t)     (HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
 
 static QScopedPointer<KFMap>  g_known_folders_map;
-static SHGetKnownFolderPath_t g_known_folders_fpGetKnownFolderPath;
-static SHGetFolderPath_t      g_known_folders_fpGetFolderPath;
 static QReadWriteLock         g_known_folders_lock;
 
 const QString &MUtils::OS::known_folder(known_folder_t folder_id)
@@ -595,22 +587,16 @@ const QString &MUtils::OS::known_folder(known_folder_t folder_id)
        //Initialize on first call
        if(g_known_folders_map.isNull())
        {
-               QLibrary shell32("shell32.dll");
-               if(shell32.load())
-               {
-                       g_known_folders_fpGetFolderPath =      (SHGetFolderPath_t)      shell32.resolve("SHGetFolderPathW");
-                       g_known_folders_fpGetKnownFolderPath = (SHGetKnownFolderPath_t) shell32.resolve("SHGetKnownFolderPath");
-               }
                g_known_folders_map.reset(new QMap<size_t, QString>());
        }
 
        QString folderPath;
 
        //Now try to get the folder path!
-       if(g_known_folders_fpGetKnownFolderPath)
+       if(const SHGetKnownFolderPath_t known_folders_fpGetKnownFolderPath = MUtils::Win32Utils::resolve<SHGetKnownFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetKnownFolderPath")))
        {
                WCHAR *path = NULL;
-               if(g_known_folders_fpGetKnownFolderPath(s_folders[folderId].guid, KF_FLAG_CREATE, NULL, &path) == S_OK)
+               if(known_folders_fpGetKnownFolderPath(s_folders[folderId].guid, KF_FLAG_CREATE, NULL, &path) == S_OK)
                {
                        //MessageBoxW(0, path, L"SHGetKnownFolderPath", MB_TOPMOST);
                        QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path)));
@@ -621,10 +607,10 @@ const QString &MUtils::OS::known_folder(known_folder_t folder_id)
                        CoTaskMemFree(path);
                }
        }
-       else if(g_known_folders_fpGetFolderPath)
+       else if(const SHGetFolderPath_t known_folders_fpGetFolderPath = MUtils::Win32Utils::resolve<SHGetFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetFolderPathW")))
        {
                QScopedArrayPointer<WCHAR> path(new WCHAR[4096]);
-               if(g_known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
+               if(known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
                {
                        //MessageBoxW(0, path, L"SHGetFolderPathW", MB_TOPMOST);
                        QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path.data())));
@@ -713,6 +699,117 @@ quint64 MUtils::OS::current_file_time(void)
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+// FILE PATH FROM FD
+///////////////////////////////////////////////////////////////////////////////
+
+typedef DWORD(_stdcall *GetPathNameByHandleFun)(HANDLE hFile, LPWSTR lpszFilePath, DWORD cchFilePath, DWORD dwFlags);
+
+static QString get_file_path_drive_list(void)
+{
+       QString list;
+       const DWORD len = GetLogicalDriveStringsW(0, NULL);
+       if (len > 0)
+       {
+               if (wchar_t *const buffer = (wchar_t*) _malloca(sizeof(wchar_t) * len))
+               {
+                       const DWORD ret = GetLogicalDriveStringsW(len, buffer);
+                       if ((ret > 0) && (ret < len))
+                       {
+                               const wchar_t *ptr = buffer;
+                               while (const size_t current_len = wcslen(ptr))
+                               {
+                                       list.append(QChar(*reinterpret_cast<const ushort*>(ptr)));
+                                       ptr += (current_len + 1);
+                               }
+                       }
+                       _freea(buffer);
+               }
+       }
+       return list;
+}
+
+static void get_file_path_translate(QString &path)
+{
+       static const DWORD BUFSIZE = 2048;
+       wchar_t buffer[BUFSIZE], drive[3];
+
+       const QString driveList = get_file_path_drive_list();
+       wcscpy_s(drive, 3, L"?:");
+       for (const wchar_t *current = MUTILS_WCHR(driveList); *current; current++)
+       {
+               drive[0] = (*current);
+               if (QueryDosDeviceW(drive, buffer, MAX_PATH))
+               {
+                       const QString prefix = MUTILS_QSTR(buffer);
+                       if (path.startsWith(prefix, Qt::CaseInsensitive))
+                       {
+                               path.remove(0, prefix.length()).prepend(QLatin1Char(':')).prepend(QChar(*reinterpret_cast<const ushort*>(current)));
+                               break;
+                       }
+               }
+       }
+}
+
+static QString get_file_path_fallback(const HANDLE &hFile)
+{
+       QString filePath;
+
+       const HANDLE hFileMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 1, NULL);
+       if (hFileMap)
+       {
+               void *const pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
+               if (pMem)
+               {
+                       static const size_t BUFFSIZE = 2048;
+                       wchar_t buffer[BUFFSIZE];
+                       if (GetMappedFileNameW(GetCurrentProcess(), pMem, buffer, BUFFSIZE) > 0)
+                       {
+                               filePath = MUTILS_QSTR(buffer);
+                       }
+                       UnmapViewOfFile(pMem);
+               }
+               CloseHandle(hFileMap);
+       }
+
+       if (!filePath.isEmpty())
+       {
+               get_file_path_translate(filePath);
+       }
+
+       return filePath;
+}
+
+QString MUtils::OS::get_file_path(const int &fd)
+{
+       if (fd >= 0)
+       {
+               const GetPathNameByHandleFun getPathNameByHandleFun = MUtils::Win32Utils::resolve<GetPathNameByHandleFun>(QLatin1String("kernel32"), QLatin1String("GetFinalPathNameByHandleW"));
+               if (!getPathNameByHandleFun)
+               {
+                       return get_file_path_fallback((HANDLE)_get_osfhandle(fd));
+               }
+
+               const HANDLE handle = (HANDLE) _get_osfhandle(fd);
+               const DWORD len = getPathNameByHandleFun(handle, NULL, 0, FILE_NAME_OPENED);
+               if (len > 0)
+               {
+                       if (wchar_t *const buffer = (wchar_t*)_malloca(sizeof(wchar_t) * len))
+                       {
+                               const DWORD ret = getPathNameByHandleFun(handle, buffer, len, FILE_NAME_OPENED);
+                               if ((ret > 0) && (ret < len))
+                               {
+                                       const QString path(MUTILS_QSTR(buffer));
+                                       return path.startsWith(QLatin1String("\\\\?\\")) ? path.mid(4) : path;
+                               }
+                               _freea(buffer);
+                       }
+               }
+       }
+
+       return QString();
+}
+
+///////////////////////////////////////////////////////////////////////////////
 // PROCESS ELEVATION
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -903,15 +1000,46 @@ void MUtils::OS::sleep_ms(const size_t &duration)
 // EXECUTABLE CHECK
 ///////////////////////////////////////////////////////////////////////////////
 
+static bool libraryAsImageResourceSupported()
+{
+       OSVERSIONINFOEXW osvi;
+       memset(&osvi, 0, sizeof(OSVERSIONINFOEXW));
+       osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
+       if(GetVersionExW((LPOSVERSIONINFOW)&osvi))
+       {
+               if(osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
+               {
+                       return (osvi.dwMajorVersion >= 6U);
+               }
+       }
+       return false;
+}
+
 bool MUtils::OS::is_executable_file(const QString &path)
 {
-       bool bIsExecutable = false;
        DWORD binaryType;
        if(GetBinaryType(MUTILS_WCHR(QDir::toNativeSeparators(path)), &binaryType))
        {
-               bIsExecutable = (binaryType == SCS_32BIT_BINARY || binaryType == SCS_64BIT_BINARY);
+               return ((binaryType == SCS_32BIT_BINARY) || (binaryType == SCS_64BIT_BINARY));
+       }
+
+       const DWORD errorCode = GetLastError();
+       qWarning("GetBinaryType() failed with error: 0x%08X", errorCode);
+       return false;
+}
+
+bool MUtils::OS::is_library_file(const QString &path)
+{
+       const DWORD flags = libraryAsImageResourceSupported() ? (LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE) : (LOAD_LIBRARY_AS_DATAFILE | DONT_RESOLVE_DLL_REFERENCES);
+       if (const HMODULE hMod = LoadLibraryEx(MUTILS_WCHR(QDir::toNativeSeparators(path)), NULL, flags))
+       {
+               FreeLibrary(hMod);
+               return true;
        }
-       return bIsExecutable;
+
+       const DWORD errorCode = GetLastError();
+       qWarning("LoadLibraryEx() failed with error: 0x%08X", errorCode);
+       return false;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1160,6 +1288,89 @@ bool MUtils::OS::reset_timer_resolution(const quint32 &interval)
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+// SET FILE TIME
+///////////////////////////////////////////////////////////////////////////////
+
+static QScopedPointer<QDateTime> s_epoch;
+static QReadWriteLock            s_epochLock;
+
+static const QDateTime *get_epoch(void)
+{
+       QReadLocker rdLock(&s_epochLock);
+
+       if (s_epoch.isNull())
+       {
+               rdLock.unlock();
+               QWriteLocker wrLock(&s_epochLock);
+               if (s_epoch.isNull())
+               {
+                       s_epoch.reset(new QDateTime(QDate(1601, 1, 1), QTime(0, 0, 0, 0), Qt::UTC));
+               }
+               wrLock.unlock();
+               rdLock.relock();
+       }
+
+       return s_epoch.data();
+}
+
+static FILETIME *qt_time_to_file_time(FILETIME *const fileTime, const QDateTime &dateTime)
+{
+       memset(fileTime, 0, sizeof(FILETIME));
+
+       if (const QDateTime *const epoch = get_epoch())
+       {
+               const qint64 msecs = epoch->msecsTo(dateTime);
+               if (msecs > 0)
+               {
+                       const quint64 ticks = 10000U * quint64(msecs);
+                       fileTime->dwHighDateTime = ((ticks >> 32) & 0xFFFFFFFF);
+                       fileTime->dwLowDateTime = (ticks & 0xFFFFFFFF);
+                       return fileTime;
+               }
+       }
+
+       return NULL;
+}
+
+static bool set_file_time(const HANDLE hFile, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
+{
+       FILETIME ftCreated, ftLastMod, ftLastAcc;
+
+       FILETIME *const pCreated = created.isValid() ? qt_time_to_file_time(&ftCreated, created) : NULL;
+       FILETIME *const pLastMod = lastMod.isValid() ? qt_time_to_file_time(&ftLastMod, lastMod) : NULL;
+       FILETIME *const pLastAcc = lastAcc.isValid() ? qt_time_to_file_time(&ftLastAcc, lastAcc) : NULL;
+
+       if (pCreated || pLastMod || pLastAcc)
+       {
+               return (SetFileTime(hFile, pCreated, pLastAcc, pLastMod) != FALSE);
+       }
+
+       return false;
+}
+
+bool MUtils::OS::set_file_time(const QFile &file, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
+{
+       const int fd = file.handle();
+       if (fd >= 0)
+       {
+               return set_file_time((HANDLE)_get_osfhandle(fd), created, lastMod, lastAcc);
+       }
+       return false;
+}
+
+bool MUtils::OS::set_file_time(const QString &path, const QDateTime &created, const QDateTime &lastMod, const QDateTime &lastAcc)
+{
+       const HANDLE hFile = CreateFileW(MUTILS_WCHR(path), FILE_WRITE_ATTRIBUTES, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
+       bool okay = false;
+       if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
+       {
+               okay = set_file_time(hFile, created, lastMod, lastAcc);
+               CloseHandle(hFile);
+       }
+       return okay;
+}
+
+///////////////////////////////////////////////////////////////////////////////
 // CHECK KEY STATE
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -1184,67 +1395,28 @@ void MUtils::OS::shell_change_notification(void)
 typedef BOOL (_stdcall *Wow64DisableWow64FsRedirectionFun)(void *OldValue);
 typedef BOOL (_stdcall *Wow64RevertWow64FsRedirectionFun )(void *OldValue);
 
-static QReadWriteLock                    g_wow64redir_lock;
-static QScopedPointer<QLibrary>          g_wow64redir_kernel32;
-static Wow64DisableWow64FsRedirectionFun g_wow64redir_disable = NULL;
-static Wow64RevertWow64FsRedirectionFun  g_wow64redir_revert  = NULL;
-
-static bool wow64fsredir_init()
+bool MUtils::OS::wow64fsredir_disable(void *oldValue)
 {
-       QWriteLocker writeLock(&g_wow64redir_lock);
-       if(g_wow64redir_disable && g_wow64redir_revert)
-       {
-               return true; /*already initialized*/
-       }
-
-       if(g_wow64redir_kernel32.isNull())
-       {
-               g_wow64redir_kernel32.reset(new QLibrary("kernel32.dll"));
-       }
-
-       if(!g_wow64redir_kernel32->isLoaded())
+       const Wow64DisableWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64DisableWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64DisableWow64FsRedirection"));
+       if(wow64redir_disable)
        {
-               if(!g_wow64redir_kernel32->load())
+               if (wow64redir_disable(oldValue))
                {
-                       return false; /*faild to load kernel32.dll*/
+                       return true;
                }
        }
-
-       g_wow64redir_disable = (Wow64DisableWow64FsRedirectionFun) g_wow64redir_kernel32->resolve("Wow64DisableWow64FsRedirection");
-       g_wow64redir_revert  = (Wow64RevertWow64FsRedirectionFun)  g_wow64redir_kernel32->resolve("Wow64RevertWow64FsRedirection");
-
-       return (g_wow64redir_disable && g_wow64redir_revert);
-}
-
-#define WOW64FSREDIR_INIT(RDLOCK) do \
-{ \
-       while(!(g_wow64redir_disable && g_wow64redir_revert)) \
-       { \
-               (RDLOCK).unlock(); \
-               if(!wow64fsredir_init()) return false; \
-               (RDLOCK).relock(); \
-       } \
-} \
-while(0)
-
-bool MUtils::OS::wow64fsredir_disable(void *oldValue)
-{
-       QReadLocker readLock(&g_wow64redir_lock);
-       WOW64FSREDIR_INIT(readLock);
-       if(g_wow64redir_disable(oldValue))
-       {
-               return true;
-       }
        return false;
 }
 
 bool MUtils::OS::wow64fsredir_revert(void *oldValue)
 {
-       QReadLocker readLock(&g_wow64redir_lock);
-       WOW64FSREDIR_INIT(readLock);
-       if(g_wow64redir_revert(oldValue))
+       const Wow64RevertWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64RevertWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64RevertWow64FsRedirection"));
+       if (wow64redir_disable)
        {
-               return true;
+               if (wow64redir_disable(oldValue))
+               {
+                       return true;
+               }
        }
        return false;
 }