src/TortoiseShell/ShellExt.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2011-2013 - TortoiseGit
   4 // Copyright (C) 2003-2013 - TortoiseSVN
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 #include "stdafx.h"
  21
  22 // Initialize GUIDs (should be done only and at-least once per DLL/EXE)
  23 #include <initguid.h>
  24 #include "Guids.h"
  25
  26 #include "ShellExt.h"
  27 #include "ShellObjects.h"
  28 #include "..\version.h"
  29 #undef swprintf
  30
  31 extern ShellObjects g_shellObjects;
  32
  33 // *********************** CShellExt *************************
  34 CShellExt::CShellExt(FileState state)
  35 #if ENABLE_CRASHHANLDER
  36         : m_crasher(L"TortoiseGit", TGIT_VERMAJOR, TGIT_VERMINOR, TGIT_VERMICRO, TGIT_VERBUILD, TGIT_VERDATE, false)
  37 #else
  38         : m_State(state)
  39 #endif
  40         ,regDiffLater(L"Software\\TortoiseGit\\DiffLater", L"")
  41 {
  42         m_State = state;
  43
  44         m_cRef = 0L;
  45         InterlockedIncrement(&g_cRefThisDll);
  46
  47         {
  48                 AutoLocker lock(g_csGlobalCOMGuard);
  49                 g_shellObjects.Insert(this);
  50         }
  51
  52         INITCOMMONCONTROLSEX used = {
  53                 sizeof(INITCOMMONCONTROLSEX),
  54                         ICC_LISTVIEW_CLASSES | ICC_WIN95_CLASSES | ICC_BAR_CLASSES | ICC_USEREX_CLASSES
  55         };
  56         InitCommonControlsEx(&used);
  57         LoadLangDll();
  58 }
  59
  60 CShellExt::~CShellExt()
  61 {
  62         AutoLocker lock(g_csGlobalCOMGuard);
  63         InterlockedDecrement(&g_cRefThisDll);
  64         g_shellObjects.Erase(this);
  65 }
  66
  67 void LoadLangDll()
  68 {
  69         if ((g_langid != g_ShellCache.GetLangID())&&((g_langTimeout == 0)||(g_langTimeout < GetTickCount())))
  70         {
  71                 g_langid = g_ShellCache.GetLangID();
  72                 DWORD langId = g_langid;
  73                 TCHAR langDll[MAX_PATH*4];
  74                 HINSTANCE hInst = NULL;
  75                 TCHAR langdir[MAX_PATH] = {0};
  76                 char langdirA[MAX_PATH] = {0};
  77                 if (GetModuleFileName(g_hmodThisDll, langdir, _countof(langdir))==0)
  78                         return;
  79                 if (GetModuleFileNameA(g_hmodThisDll, langdirA, _countof(langdirA))==0)
  80                         return;
  81                 TCHAR * dirpoint = _tcsrchr(langdir, '\\');
  82                 char * dirpointA = strrchr(langdirA, '\\');
  83                 if (dirpoint)
  84                         *dirpoint = 0;
  85                 if (dirpointA)
  86                         *dirpointA = 0;
  87                 dirpoint = _tcsrchr(langdir, '\\');
  88                 dirpointA = strrchr(langdirA, '\\');
  89                 if (dirpoint)
  90                         *dirpoint = 0;
  91                 if (dirpointA)
  92                         *dirpointA = 0;
  93                 strcat_s(langdirA, "\\Languages");
  94 //              bindtextdomain ("subversion", langdirA);
  95
  96                 BOOL bIsWow = FALSE;
  97                 IsWow64Process(GetCurrentProcess(), &bIsWow);
  98
  99                 do
 100                 {
 101                         if (bIsWow)
 102                                 _stprintf_s(langDll, _T("%s\\Languages\\TortoiseProc32%lu.dll"), langdir, langId);
 103                         else
 104                                 _stprintf_s(langDll, _T("%s\\Languages\\TortoiseProc%lu.dll"), langdir, langId);
 105                         BOOL versionmatch = TRUE;
 106
 107                         struct TRANSARRAY
 108                         {
 109                                 WORD wLanguageID;
 110                                 WORD wCharacterSet;
 111                         };
 112
 113                         DWORD dwReserved,dwBufferSize;
 114                         dwBufferSize = GetFileVersionInfoSize((LPTSTR)langDll,&dwReserved);
 115
 116                         if (dwBufferSize > 0)
 117                         {
 118                                 LPVOID pBuffer = (void*) malloc(dwBufferSize);
 119
 120                                 if (pBuffer != (void*) NULL)
 121                                 {
 122                                         UINT        nInfoSize = 0;
 123                                         UINT        nFixedLength = 0;
 124                                         LPSTR       lpVersion = NULL;
 125                                         VOID*       lpFixedPointer;
 126                                         TRANSARRAY* lpTransArray;
 127                                         TCHAR       strLangProductVersion[MAX_PATH];
 128
 129                                         if (GetFileVersionInfo((LPTSTR)langDll,
 130                                                 dwReserved,
 131                                                 dwBufferSize,
 132                                                 pBuffer))
 133                                         {
 134                                                 // Query the current language
 135                                                 if (VerQueryValue(      pBuffer,
 136                                                         _T("\\VarFileInfo\\Translation"),
 137                                                         &lpFixedPointer,
 138                                                         &nFixedLength))
 139                                                 {
 140                                                         lpTransArray = (TRANSARRAY*) lpFixedPointer;
 141
 142                                                         _stprintf_s(strLangProductVersion, _T("\\StringFileInfo\\%04x%04x\\ProductVersion"),
 143                                                                 lpTransArray[0].wLanguageID, lpTransArray[0].wCharacterSet);
 144
 145                                                         if (VerQueryValue(pBuffer,
 146                                                                 (LPTSTR)strLangProductVersion,
 147                                                                 (LPVOID *)&lpVersion,
 148                                                                 &nInfoSize))
 149                                                         {
 150                                                                 versionmatch = (_tcscmp((LPCTSTR)lpVersion, _T(STRPRODUCTVER)) == 0);
 151                                                         }
 152
 153                                                 }
 154                                         }
 155                                         free(pBuffer);
 156                                 } // if (pBuffer != (void*) NULL)
 157                         } // if (dwBufferSize > 0)
 158                         else
 159                                 versionmatch = FALSE;
 160
 161                         if (versionmatch)
 162                                 hInst = LoadLibrary(langDll);
 163                         if (hInst != NULL)
 164                         {
 165                                 if (g_hResInst != g_hmodThisDll)
 166                                         FreeLibrary(g_hResInst);
 167                                 g_hResInst = hInst;
 168                         }
 169                         else
 170                         {
 171                                 DWORD lid = SUBLANGID(langId);
 172                                 lid--;
 173                                 if (lid > 0)
 174                                 {
 175                                         langId = MAKELANGID(PRIMARYLANGID(langId), lid);
 176                                 }
 177                                 else
 178                                         langId = 0;
 179                         }
 180                 } while ((hInst == NULL) && (langId != 0));
 181                 if (hInst == NULL)
 182                 {
 183                         // either the dll for the selected language is not present, or
 184                         // it is the wrong version.
 185                         // fall back to English and set a timeout so we don't retry
 186                         // to load the language dll too often
 187                         if (g_hResInst != g_hmodThisDll)
 188                                 FreeLibrary(g_hResInst);
 189                         g_hResInst = g_hmodThisDll;
 190                         g_langid = 1033;
 191                         // set a timeout of 10 seconds
 192                         if (g_ShellCache.GetLangID() != 1033)
 193                                 g_langTimeout = GetTickCount() + 10000;
 194                 }
 195                 else
 196                         g_langTimeout = 0;
 197         } // if (g_langid != g_ShellCache.GetLangID())
 198 }
 199
 200 STDMETHODIMP CShellExt::QueryInterface(REFIID riid, LPVOID FAR *ppv)
 201 {
 202         if(ppv == 0)
 203                 return E_POINTER;
 204
 205         *ppv = NULL;
 206
 207         if (IsEqualIID(riid, IID_IShellExtInit) || IsEqualIID(riid, IID_IUnknown))
 208         {
 209                 *ppv = static_cast<LPSHELLEXTINIT>(this);
 210         }
 211         else if (IsEqualIID(riid, IID_IContextMenu))
 212         {
 213                 *ppv = static_cast<LPCONTEXTMENU>(this);
 214         }
 215         else if (IsEqualIID(riid, IID_IContextMenu2))
 216         {
 217                 *ppv = static_cast<LPCONTEXTMENU2>(this);
 218         }
 219         else if (IsEqualIID(riid, IID_IContextMenu3))
 220         {
 221                 *ppv = static_cast<LPCONTEXTMENU3>(this);
 222         }
 223         else if (IsEqualIID(riid, IID_IShellIconOverlayIdentifier))
 224         {
 225                 *ppv = static_cast<IShellIconOverlayIdentifier*>(this);
 226         }
 227         else if (IsEqualIID(riid, IID_IShellPropSheetExt))
 228         {
 229                 *ppv = static_cast<LPSHELLPROPSHEETEXT>(this);
 230         }
 231         else if (IsEqualIID(riid, IID_IShellCopyHook))
 232         {
 233                 *ppv = static_cast<ICopyHook*>(this);
 234         }
 235         else
 236         {
 237                 return E_NOINTERFACE;
 238         }
 239
 240         AddRef();
 241         return S_OK;
 242 }
 243
 244 STDMETHODIMP_(ULONG) CShellExt::AddRef()
 245 {
 246         return ++m_cRef;
 247 }
 248
 249 STDMETHODIMP_(ULONG) CShellExt::Release()
 250 {
 251         if (--m_cRef)
 252                 return m_cRef;
 253
 254         delete this;
 255
 256         return 0L;
 257 }
 258
 259 // IPersistFile members
 260 STDMETHODIMP CShellExt::GetClassID(CLSID *pclsid)
 261 {
 262         if(pclsid == 0)
 263                 return E_POINTER;
 264         *pclsid = CLSID_Tortoisegit_UNCONTROLLED;
 265         return S_OK;
 266 }
 267
 268 STDMETHODIMP CShellExt::Load(LPCOLESTR /*pszFileName*/, DWORD /*dwMode*/)
 269 {
 270         return S_OK;
 271 }
 272
 273 // ICopyHook member
 274 UINT __stdcall CShellExt::CopyCallback(HWND hWnd, UINT wFunc, UINT wFlags, LPCTSTR pszSrcFile, DWORD dwSrcAttribs, LPCTSTR pszDestFile, DWORD dwDestAttribs)
 275 {
 276         __try
 277         {
 278                 return CopyCallback_Wrap(hWnd, wFunc, wFlags, pszSrcFile, dwSrcAttribs, pszDestFile, dwDestAttribs);
 279         }
 280         __except(CCrashReport::Instance().SendReport(GetExceptionInformation()))
 281         {
 282         }
 283         return IDYES;
 284 }
 285
 286 UINT __stdcall CShellExt::CopyCallback_Wrap(HWND /*hWnd*/, UINT wFunc, UINT /*wFlags*/, LPCTSTR pszSrcFile, DWORD /*dwSrcAttribs*/, LPCTSTR /*pszDestFile*/, DWORD /*dwDestAttribs*/)
 287 {
 288         if (wFunc == FO_COPY)
 289                 return IDYES;   // copying is not a problem for us
 290
 291         m_remoteCacheLink.ReleaseLockForPath(CTGitPath(pszSrcFile));
 292         // we could now wait a little bit to give the cache time to release the handles.
 293         // but the explorer/shell already retries any action for about two seconds
 294         // if it first fails. So if the cache hasn't released the handle yet, the explorer
 295         // will retry anyway, so we just leave here immediately.
 296         return IDYES;
 297 }