diff options
Diffstat (limited to 'shared/fileHandling.cpp')
| -rw-r--r-- | shared/fileHandling.cpp | 228 |
1 files changed, 195 insertions, 33 deletions
diff --git a/shared/fileHandling.cpp b/shared/fileHandling.cpp index a5d3cf57..55fd7ff5 100644 --- a/shared/fileHandling.cpp +++ b/shared/fileHandling.cpp @@ -1,8 +1,13 @@ #include "fileHandling.h" #include <wx/intl.h> #include "systemFunctions.h" -#include "globalFunctions.h" +#include "systemConstants.h" #include "fileTraverser.h" +#include <wx/file.h> +#include <stdexcept> +#include <boost/bind.hpp> +#include <algorithm> +#include <wx/log.h> #ifdef FFS_WIN #include <wx/msw/wrapwin.h> //includes "windows.h" @@ -55,7 +60,7 @@ public: return recycleBinAvailable; } - bool moveToRecycleBin(const Zstring& filename) const; //throw (RuntimeException) + bool moveToRecycleBin(const Zstring& filename) const; //throw (std::logic_error) private: RecycleBin() : @@ -73,10 +78,10 @@ private: }; -bool RecycleBin::moveToRecycleBin(const Zstring& filename) const //throw (RuntimeException) +bool RecycleBin::moveToRecycleBin(const Zstring& filename) const //throw (std::logic_error) { if (!recycleBinAvailable) //this method should ONLY be called if recycle bin is available - throw RuntimeException(_("Initialization of Recycle Bin failed!")); + throw std::logic_error("Initialization of Recycle Bin failed!"); #ifdef FFS_WIN Zstring filenameDoubleNull = filename + wxChar(0); @@ -105,7 +110,7 @@ bool FreeFileSync::recycleBinExists() inline -bool moveToRecycleBin(const Zstring& filename) //throw (RuntimeException) +bool moveToRecycleBin(const Zstring& filename) //throw (std::logic_error) { return RecycleBin::getInstance().moveToRecycleBin(filename); } @@ -159,7 +164,54 @@ bool FreeFileSync::symlinkExists(const DefaultChar* objname) } -void FreeFileSync::removeFile(const Zstring& filename, const bool useRecycleBin) //throw (FileError, ::RuntimeException); +bool FreeFileSync::isMovable(const Zstring& pathFrom, const Zstring& pathTo) +{ + wxLogNull noWxLogs; //prevent wxWidgets logging if dummy file creation failed + + const Zstring dummyFileSource = pathFrom.EndsWith(globalFunctions::FILE_NAME_SEPARATOR) ? + pathFrom + wxT("DeleteMe.tmp") : + pathFrom + globalFunctions::FILE_NAME_SEPARATOR + wxT("DeleteMe.tmp"); + + const Zstring dummyFileTarget = pathTo.EndsWith(globalFunctions::FILE_NAME_SEPARATOR) ? + pathTo + wxT("DeleteMe.tmp") : + pathTo + globalFunctions::FILE_NAME_SEPARATOR + wxT("DeleteMe.tmp"); + try + { + removeFile(dummyFileSource, false); + removeFile(dummyFileTarget, false); + } + catch (...) {} + + //create dummy file + { + wxFile dummy(dummyFileSource.c_str(), wxFile::write); + if (!dummy.IsOpened()) + return false; //if there's no write access, files can't be moved neither + dummy.Write(wxT("FreeFileSync dummy file. May be deleted safely.\n")); + } + + const bool result = + //try to move the file +#ifdef FFS_WIN + ::MoveFileEx(dummyFileSource.c_str(), //__in LPCTSTR lpExistingFileName, + dummyFileTarget.c_str(), //__in_opt LPCTSTR lpNewFileName, + 0) != 0; //__in DWORD dwFlags +#elif defined FFS_LINUX + ::rename(dummyFileSource.c_str(), dummyFileTarget.c_str()) == 0; +#endif + + try + { + removeFile(dummyFileSource, false); + removeFile(dummyFileTarget, false); + } + catch (...) {} + + return result; +} + + +void FreeFileSync::removeFile(const Zstring& filename, const bool useRecycleBin) //throw (FileError, std::logic_error); { //no error situation if file is not existing! manual deletion relies on it! #ifdef FFS_WIN @@ -232,7 +284,7 @@ private: void FreeFileSync::moveFile(const Zstring& sourceFile, const Zstring& targetFile, MoveFileCallback* callback) //throw (FileError); { - if (fileExists(targetFile)) //test file existence: e.g. Linux might silently overwrite existing symlinks + if (fileExists(targetFile.c_str())) //test file existence: e.g. Linux might silently overwrite existing symlinks { const wxString errorMessage = wxString(_("Error moving file:")) + wxT("\n\"") + sourceFile + wxT("\" ->\n\"") + targetFile + wxT("\""); throw FileError(errorMessage + wxT("\n\n") + _("Target file already existing!")); @@ -481,18 +533,21 @@ void FreeFileSync::removeDirectory(const Zstring& directory, const bool useRecyc return; } -//attention: check if directory is a symlink! Do NOT traverse into it deleting contained files!!! + #ifdef FFS_WIN - if (dirAttr & FILE_ATTRIBUTE_REPARSE_POINT) //remove symlink directly, support for \\?\-prefix + //initialize file attributes + if (!::SetFileAttributes( // initialize file attributes: actually NEEDED for symbolic links also! + directory.c_str(), // address of directory name + FILE_ATTRIBUTE_NORMAL)) // attributes to set { - if (!::SetFileAttributes( // initialize file attributes: actually NEEDED for symbolic links also! - directory.c_str(), // address of directory name - FILE_ATTRIBUTE_NORMAL)) // attributes to set - { - wxString errorMessage = wxString(_("Error deleting directory:")) + wxT("\n\"") + directory.c_str() + wxT("\""); - throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); - } + wxString errorMessage = wxString(_("Error deleting directory:")) + wxT("\n\"") + directory.c_str() + wxT("\""); + throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); + } + +//attention: check if directory is a symlink! Do NOT traverse into it deleting contained files!!! + if (dirAttr & FILE_ATTRIBUTE_REPARSE_POINT) //remove symlink directly, support for \\?\-prefix + { if (!::RemoveDirectory(directory.c_str())) { wxString errorMessage = wxString(_("Error deleting directory:")) + wxT("\n\"") + directory.c_str() + wxT("\""); @@ -521,24 +576,13 @@ void FreeFileSync::removeDirectory(const Zstring& directory, const bool useRecyc FreeFileSync::traverseFolder(directory, false, &traverser); //delete files - for (std::vector<Zstring>::const_iterator j = fileList.begin(); j != fileList.end(); ++j) - FreeFileSync::removeFile(*j, false); + std::for_each(fileList.begin(), fileList.end(), boost::bind(removeFile, _1, false)); //delete directories recursively - for (std::vector<Zstring>::const_iterator j = dirList.begin(); j != dirList.end(); ++j) - FreeFileSync::removeDirectory(*j, false); //call recursively to correctly handle symbolic links + std::for_each(dirList.begin(), dirList.end(), boost::bind(removeDirectory, _1, false)); //call recursively to correctly handle symbolic links //parent directory is deleted last #ifdef FFS_WIN - //initialize file attributes - if (!::SetFileAttributes( - directory.c_str(), // address of directory name - FILE_ATTRIBUTE_NORMAL)) // attributes to set - { - wxString errorMessage = wxString(_("Error deleting directory:")) + wxT("\n\"") + directory.c_str() + wxT("\""); - throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); - } - //remove directory, support for \\?\-prefix if (!::RemoveDirectory(directory.c_str())) { @@ -563,14 +607,77 @@ public: ~CloseHandleOnExit() { - CloseHandle(fileHandle_); + ::CloseHandle(fileHandle_); } private: HANDLE fileHandle_; }; +#endif + + +//optionally: copy directory last change date, DO NOTHING if something fails +void FreeFileSync::copyDirLastChangeDate(const Zstring& sourceDir, const Zstring& targetDir) +{ + if (symlinkExists(sourceDir)) //don't handle symlinks (yet) + return; + +#ifdef FFS_WIN + HANDLE hDirRead = ::CreateFile(sourceDir.c_str(), + 0, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + NULL, + OPEN_EXISTING, + FILE_FLAG_BACKUP_SEMANTICS, //needed for directories + NULL); + + if (hDirRead == INVALID_HANDLE_VALUE) + return; + CloseHandleOnExit dummy(hDirRead); + + FILETIME lastWriteTime; + if (::GetFileTime(hDirRead, + NULL, + NULL, + &lastWriteTime)) + { + HANDLE hDirWrite = ::CreateFile(targetDir.c_str(), + FILE_WRITE_ATTRIBUTES, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + NULL, + OPEN_EXISTING, + FILE_FLAG_BACKUP_SEMANTICS, //needed for directories + NULL); + + if (hDirWrite != INVALID_HANDLE_VALUE) + { + CloseHandleOnExit dummy2(hDirWrite); + + //(try to) set new "last write time" + ::SetFileTime(hDirWrite, + NULL, + NULL, + &lastWriteTime); //return value not evalutated! + } + } +#elif defined FFS_LINUX + struct stat dirInfo; + if (::stat(sourceDir.c_str(), &dirInfo) == 0) //read file attributes from source directory + { + //adapt file modification time: + struct utimbuf newTimes; + ::time(&newTimes.actime); //set file access time to current time + newTimes.modtime = dirInfo.st_mtime; + //(try to) set new "last write time" + ::utime(targetDir.c_str(), &newTimes); //return value not evalutated! + } +#endif +} + + +#ifdef FFS_WIN class KernelDllHandler //dynamically load windows API functions { typedef DWORD (WINAPI *GetFinalPath)( @@ -640,6 +747,53 @@ Zstring resolveDirectorySymlink(const Zstring& dirLinkName) //get full target pa return targetPath; } + + +//#include <aclapi.h> +//optionally: copy additional metadata, DO NOTHING if something fails +//void copyAdditionalMetadata(const Zstring& sourceDir, const Zstring& targetDir) +//{ +// PSECURITY_DESCRIPTOR pSD; +// +// PSID pSidOwner; +// PSID pSidGroup; +// PACL pDacl; +// PACL pSacl; +// if (::GetNamedSecurityInfo( +// const_cast<DefaultChar*>(sourceDir.c_str()), +// SE_FILE_OBJECT, //file or directory +// OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION, +// &pSidOwner, +// &pSidGroup, +// &pDacl, +// &pSacl, +// &pSD +// ) == ERROR_SUCCESS) +// { +// //(try to) set new security information +// if (::SetNamedSecurityInfo( +// const_cast<DefaultChar*>(targetDir.c_str()), +// SE_FILE_OBJECT, //file or directory +// OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION, +// pSidOwner, +// pSidGroup, +// pDacl, +// pSacl) != ERROR_SUCCESS) //return value not evalutated! +// { +// const wxString errorMessage = wxString(wxT("Error 2:")) + wxT("\n\"") + targetDir.c_str() + wxT("\""); +// throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); +// } +//warning BUG! +// +// LocalFree(pSD); //pSidOwner, pSidGroup, pDacl, pSacl must not be freed! +// } +// else +// { +// const wxString errorMessage = wxString(wxT("Error 1:")) + wxT("\n\"") + sourceDir.c_str() + wxT("\""); +// throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); +// } +// +//} #endif @@ -694,6 +848,9 @@ void createDirectoryRecursively(const Zstring& directory, const Zstring& templat const wxString errorMessage = wxString(_("Error creating directory:")) + wxT("\n\"") + directory.c_str() + wxT("\""); throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); } + + //(try to) copy additional metadata like last modification time: no measurable performance drawback + //copyAdditionalMetadata(linkPath, directory); } } else //in all other cases @@ -706,6 +863,9 @@ void createDirectoryRecursively(const Zstring& directory, const Zstring& templat const wxString errorMessage = wxString(_("Error creating directory:")) + wxT("\n\"") + directory.c_str() + wxT("\""); throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); } + + //(try to) copy additional metadata like last modification time: no measurable performance drawback + //copyAdditionalMetadata(templateDir, directory); } } #elif defined FFS_LINUX @@ -874,13 +1034,15 @@ void FreeFileSync::copyFile(const Zstring& sourceFile, //don't suppress "lastError == ERROR_REQUEST_ABORTED": an user aborted operation IS an error condition! //if file is locked (try to) use Windows Volume Shadow Copy Service - if (lastError == ERROR_SHARING_VIOLATION && shadowCopyHandler != NULL) + if (shadowCopyHandler != NULL && + (lastError == ERROR_SHARING_VIOLATION || + lastError == ERROR_LOCK_VIOLATION)) { const Zstring shadowFilename(shadowCopyHandler->makeShadowCopy(sourceFile)); FreeFileSync::copyFile(shadowFilename, //transferred bytes is automatically reset when new file is copied targetFile, copyFileSymLinks, - shadowCopyHandler, + NULL, callback); return; } @@ -958,7 +1120,7 @@ void FreeFileSync::copyFile(const Zstring& sourceFile, //begin of regular file copy struct stat fileInfo; - if (stat(sourceFile.c_str(), &fileInfo) != 0) //read file attributes from source file (resolving symlinks) + if (stat(sourceFile.c_str(), &fileInfo) != 0) //read file attributes from source file (resolving symlinks; but cannot be one in this context) { const wxString errorMessage = wxString(_("Error reading file attributes:")) + wxT("\n\"") + sourceFile.c_str() + wxT("\""); throw FileError(errorMessage + wxT("\n\n") + FreeFileSync::getLastErrorFormatted()); |