src/OSSupport_Win32.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2014 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 #pragma once
  23
  24 //Internal
  25 #include <MUtils/Global.h>
  26 #include <MUtils/OSSupport.h>
  27 #include "CriticalSection_Win32.h"
  28
  29 //Win32 API
  30 #define WIN32_LEAN_AND_MEAN 1
  31 #include <Windows.h>
  32 #include <Objbase.h>
  33
  34 //Qt
  35 #include <QMap>
  36 #include <QReadWriteLock>
  37 #include <QLibrary>
  38 #include <QDir>
  39
  40 //Main thread ID
  41 static const DWORD g_main_thread_id = GetCurrentThreadId();
  42
  43 ///////////////////////////////////////////////////////////////////////////////
  44 // KNWON FOLDERS
  45 ///////////////////////////////////////////////////////////////////////////////
  46
  47 typedef HRESULT (WINAPI *SHGetKnownFolderPath_t)(const GUID &rfid, DWORD dwFlags, HANDLE hToken, PWSTR *ppszPath);
  48 typedef HRESULT (WINAPI *SHGetFolderPath_t)(HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
  49
  50 static QMap<size_t, QString>* g_known_folders_map;
  51 static SHGetKnownFolderPath_t g_known_folders_fpGetKnownFolderPath;
  52 static SHGetFolderPath_t      g_known_folders_fpGetFolderPath;
  53 static QReadWriteLock         g_known_folders_lock;
  54
  55 const QString &MUtils::OS::known_folder(known_folder_t folder_id)
  56 {
  57         static const int CSIDL_FLAG_CREATE = 0x8000;
  58         typedef enum { KF_FLAG_CREATE = 0x00008000 } kf_flags_t;
  59
  60         struct
  61         {
  62                 const int csidl;
  63                 const GUID guid;
  64         }
  65         static s_folders[] =
  66         {
  67                 { 0x001c, {0xF1B32785,0x6FBA,0x4FCF,{0x9D,0x55,0x7B,0x8E,0x7F,0x15,0x70,0x91}} },  //CSIDL_LOCAL_APPDATA
  68                 { 0x0026, {0x905e63b6,0xc1bf,0x494e,{0xb2,0x9c,0x65,0xb7,0x32,0xd3,0xd2,0x1a}} },  //CSIDL_PROGRAM_FILES
  69                 { 0x0024, {0xF38BF404,0x1D43,0x42F2,{0x93,0x05,0x67,0xDE,0x0B,0x28,0xFC,0x23}} },  //CSIDL_WINDOWS_FOLDER
  70                 { 0x0025, {0x1AC14E77,0x02E7,0x4E5D,{0xB7,0x44,0x2E,0xB1,0xAE,0x51,0x98,0xB7}} },  //CSIDL_SYSTEM_FOLDER
  71         };
  72
  73         size_t folderId = size_t(-1);
  74
  75         switch(folder_id)
  76         {
  77                 case FOLDER_LOCALAPPDATA: folderId = 0; break;
  78                 case FOLDER_PROGRAMFILES: folderId = 1; break;
  79                 case FOLDER_SYSTROOT_DIR: folderId = 2; break;
  80                 case FOLDER_SYSTEMFOLDER: folderId = 3; break;
  81         }
  82
  83         if(folderId == size_t(-1))
  84         {
  85                 qWarning("Invalid 'known' folder was requested!");
  86                 return *reinterpret_cast<QString*>(NULL);
  87         }
  88
  89         QReadLocker readLock(&g_known_folders_lock);
  90
  91         //Already in cache?
  92         if(g_known_folders_map)
  93         {
  94                 if(g_known_folders_map->contains(folderId))
  95                 {
  96                         return g_known_folders_map->operator[](folderId);
  97                 }
  98         }
  99
 100         //Obtain write lock to initialize
 101         readLock.unlock();
 102         QWriteLocker writeLock(&g_known_folders_lock);
 103
 104         //Still not in cache?
 105         if(g_known_folders_map)
 106         {
 107                 if(g_known_folders_map->contains(folderId))
 108                 {
 109                         return g_known_folders_map->operator[](folderId);
 110                 }
 111         }
 112
 113         //Initialize on first call
 114         if(!g_known_folders_map)
 115         {
 116                 QLibrary shell32("shell32.dll");
 117                 if(shell32.load())
 118                 {
 119                         g_known_folders_fpGetFolderPath =      (SHGetFolderPath_t)      shell32.resolve("SHGetFolderPathW");
 120                         g_known_folders_fpGetKnownFolderPath = (SHGetKnownFolderPath_t) shell32.resolve("SHGetKnownFolderPath");
 121                 }
 122                 g_known_folders_map = new QMap<size_t, QString>();
 123         }
 124
 125         QString folderPath;
 126
 127         //Now try to get the folder path!
 128         if(g_known_folders_fpGetKnownFolderPath)
 129         {
 130                 WCHAR *path = NULL;
 131                 if(g_known_folders_fpGetKnownFolderPath(s_folders[folderId].guid, KF_FLAG_CREATE, NULL, &path) == S_OK)
 132                 {
 133                         //MessageBoxW(0, path, L"SHGetKnownFolderPath", MB_TOPMOST);
 134                         QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_WCHAR2QSTR(path)));
 135                         if(folderTemp.exists())
 136                         {
 137                                 folderPath = folderTemp.canonicalPath();
 138                         }
 139                         CoTaskMemFree(path);
 140                 }
 141         }
 142         else if(g_known_folders_fpGetFolderPath)
 143         {
 144                 QScopedArrayPointer<WCHAR> path(new WCHAR[4096]);
 145                 if(g_known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
 146                 {
 147                         //MessageBoxW(0, path, L"SHGetFolderPathW", MB_TOPMOST);
 148                         QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_WCHAR2QSTR(path.data())));
 149                         if(folderTemp.exists())
 150                         {
 151                                 folderPath = folderTemp.canonicalPath();
 152                         }
 153                 }
 154         }
 155
 156         //Update cache
 157         g_known_folders_map->insert(folderId, folderPath);
 158         return g_known_folders_map->operator[](folderId);
 159 }
 160
 161 ///////////////////////////////////////////////////////////////////////////////
 162 // FATAL EXIT
 163 ///////////////////////////////////////////////////////////////////////////////
 164
 165 static CriticalSection g_fatal_exit_lock;
 166 static volatile bool   g_fatal_exit_flag = true;
 167
 168 static DWORD WINAPI fatal_exit_helper(LPVOID lpParameter)
 169 {
 170         MessageBoxA(NULL, ((LPCSTR) lpParameter), "LameXP - Guru Meditation", MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_TOPMOST | MB_SETFOREGROUND);
 171         return 0;
 172 }
 173
 174 void MUtils::OS::fatal_exit(const char* const errorMessage)
 175 {
 176         g_fatal_exit_lock.enter();
 177
 178         if(!g_fatal_exit_flag)
 179         {
 180                 return; /*prevent recursive invocation*/
 181         }
 182
 183         g_fatal_exit_flag = false;
 184
 185         if(g_main_thread_id != GetCurrentThreadId())
 186         {
 187                 if(HANDLE hThreadMain = OpenThread(THREAD_SUSPEND_RESUME, FALSE, g_main_thread_id))
 188                 {
 189                         SuspendThread(hThreadMain); /*stop main thread*/
 190                 }
 191         }
 192
 193         if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID) errorMessage, 0, NULL))
 194         {
 195                 WaitForSingleObject(hThread, INFINITE);
 196         }
 197
 198         for(;;)
 199         {
 200                 TerminateProcess(GetCurrentProcess(), 666);
 201         }
 202 }
 203
 204 ///////////////////////////////////////////////////////////////////////////////