From f19f813537c7aea1c20749c914e756b54a9c3cf5 Mon Sep 17 00:00:00 2001 From: Igor Pavlov <87184205+ip7z@users.noreply.github.com> Date: Mon, 27 Dec 2021 00:00:00 +0000 Subject: '21.07' --- CPP/Windows/FileFind.cpp | 1242 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1242 insertions(+) create mode 100644 CPP/Windows/FileFind.cpp (limited to 'CPP/Windows/FileFind.cpp') diff --git a/CPP/Windows/FileFind.cpp b/CPP/Windows/FileFind.cpp new file mode 100644 index 0000000..591f8df --- /dev/null +++ b/CPP/Windows/FileFind.cpp @@ -0,0 +1,1242 @@ +// Windows/FileFind.cpp + +#include "StdAfx.h" + +// #include + +#ifndef _WIN32 +#include /* Definition of AT_* constants */ +#include "TimeUtils.h" +#endif + +#include "FileFind.h" +#include "FileIO.h" +#include "FileName.h" + +#ifndef _UNICODE +extern bool g_IsNT; +#endif + +using namespace NWindows; +using namespace NFile; +using namespace NName; + +#if defined(_WIN32) && !defined(UNDER_CE) + +EXTERN_C_BEGIN + +typedef enum +{ + My_FindStreamInfoStandard, + My_FindStreamInfoMaxInfoLevel +} MY_STREAM_INFO_LEVELS; + +typedef struct +{ + LARGE_INTEGER StreamSize; + WCHAR cStreamName[MAX_PATH + 36]; +} MY_WIN32_FIND_STREAM_DATA, *MY_PWIN32_FIND_STREAM_DATA; + +typedef HANDLE (WINAPI *FindFirstStreamW_Ptr)(LPCWSTR fileName, MY_STREAM_INFO_LEVELS infoLevel, + LPVOID findStreamData, DWORD flags); + +typedef BOOL (APIENTRY *FindNextStreamW_Ptr)(HANDLE findStream, LPVOID findStreamData); + +EXTERN_C_END + +#endif // defined(_WIN32) && !defined(UNDER_CE) + + +namespace NWindows { +namespace NFile { + + +#ifdef _WIN32 +#ifdef SUPPORT_DEVICE_FILE +namespace NSystem +{ +bool MyGetDiskFreeSpace(CFSTR rootPath, UInt64 &clusterSize, UInt64 &totalSize, UInt64 &freeSize); +} +#endif +#endif + +namespace NFind { + +#define MY_CLEAR_FILETIME(ft) ft.dwLowDateTime = ft.dwHighDateTime = 0; + +void CFileInfoBase::ClearBase() throw() +{ + Size = 0; + MY_CLEAR_FILETIME(CTime); + MY_CLEAR_FILETIME(ATime); + MY_CLEAR_FILETIME(MTime); + Attrib = 0; + // ReparseTag = 0; + IsAltStream = false; + IsDevice = false; + + #ifndef _WIN32 + ino = 0; + nlink = 0; + mode = 0; + #endif +} + +bool CFileInfo::IsDots() const throw() +{ + if (!IsDir() || Name.IsEmpty()) + return false; + if (Name[0] != '.') + return false; + return Name.Len() == 1 || (Name.Len() == 2 && Name[1] == '.'); +} + + +#ifdef _WIN32 + + +#define WIN_FD_TO_MY_FI(fi, fd) \ + fi.Attrib = fd.dwFileAttributes; \ + fi.CTime = fd.ftCreationTime; \ + fi.ATime = fd.ftLastAccessTime; \ + fi.MTime = fd.ftLastWriteTime; \ + fi.Size = (((UInt64)fd.nFileSizeHigh) << 32) + fd.nFileSizeLow; \ + /* fi.ReparseTag = fd.dwReserved0; */ \ + fi.IsAltStream = false; \ + fi.IsDevice = false; + + /* + #ifdef UNDER_CE + fi.ObjectID = fd.dwOID; + #else + fi.ReparseTag = fd.dwReserved0; + #endif + */ + +static void Convert_WIN32_FIND_DATA_to_FileInfo(const WIN32_FIND_DATAW &fd, CFileInfo &fi) +{ + WIN_FD_TO_MY_FI(fi, fd); + fi.Name = us2fs(fd.cFileName); + #if defined(_WIN32) && !defined(UNDER_CE) + // fi.ShortName = us2fs(fd.cAlternateFileName); + #endif +} + +#ifndef _UNICODE +static void Convert_WIN32_FIND_DATA_to_FileInfo(const WIN32_FIND_DATA &fd, CFileInfo &fi) +{ + WIN_FD_TO_MY_FI(fi, fd); + fi.Name = fas2fs(fd.cFileName); + #if defined(_WIN32) && !defined(UNDER_CE) + // fi.ShortName = fas2fs(fd.cAlternateFileName); + #endif +} +#endif + +//////////////////////////////// +// CFindFile + +bool CFindFileBase::Close() throw() +{ + if (_handle == INVALID_HANDLE_VALUE) + return true; + if (!::FindClose(_handle)) + return false; + _handle = INVALID_HANDLE_VALUE; + return true; +} + +/* +WinXP-64 FindFirstFile(): + "" - ERROR_PATH_NOT_FOUND + folder\ - ERROR_FILE_NOT_FOUND + \ - ERROR_FILE_NOT_FOUND + c:\ - ERROR_FILE_NOT_FOUND + c: - ERROR_FILE_NOT_FOUND, if current dir is ROOT ( c:\ ) + c: - OK, if current dir is NOT ROOT ( c:\folder ) + folder - OK + + \\ - ERROR_INVALID_NAME + \\Server - ERROR_INVALID_NAME + \\Server\ - ERROR_INVALID_NAME + + \\Server\Share - ERROR_BAD_NETPATH + \\Server\Share - ERROR_BAD_NET_NAME (Win7). + !!! There is problem : Win7 makes some requests for "\\Server\Shar" (look in Procmon), + when we call it for "\\Server\Share" + + \\Server\Share\ - ERROR_FILE_NOT_FOUND + + \\?\UNC\Server\Share - ERROR_INVALID_NAME + \\?\UNC\Server\Share - ERROR_BAD_PATHNAME (Win7) + \\?\UNC\Server\Share\ - ERROR_FILE_NOT_FOUND + + \\Server\Share_RootDrive - ERROR_INVALID_NAME + \\Server\Share_RootDrive\ - ERROR_INVALID_NAME + + e:\* - ERROR_FILE_NOT_FOUND, if there are no items in that root folder + w:\* - ERROR_PATH_NOT_FOUND, if there is no such drive w: +*/ + +bool CFindFile::FindFirst(CFSTR path, CFileInfo &fi) +{ + if (!Close()) + return false; + #ifndef _UNICODE + if (!g_IsNT) + { + WIN32_FIND_DATAA fd; + _handle = ::FindFirstFileA(fs2fas(path), &fd); + if (_handle == INVALID_HANDLE_VALUE) + return false; + Convert_WIN32_FIND_DATA_to_FileInfo(fd, fi); + } + else + #endif + { + WIN32_FIND_DATAW fd; + + IF_USE_MAIN_PATH + _handle = ::FindFirstFileW(fs2us(path), &fd); + #ifdef WIN_LONG_PATH + if (_handle == INVALID_HANDLE_VALUE && USE_SUPER_PATH) + { + UString superPath; + if (GetSuperPath(path, superPath, USE_MAIN_PATH)) + _handle = ::FindFirstFileW(superPath, &fd); + } + #endif + if (_handle == INVALID_HANDLE_VALUE) + return false; + Convert_WIN32_FIND_DATA_to_FileInfo(fd, fi); + } + return true; +} + +bool CFindFile::FindNext(CFileInfo &fi) +{ + #ifndef _UNICODE + if (!g_IsNT) + { + WIN32_FIND_DATAA fd; + if (!::FindNextFileA(_handle, &fd)) + return false; + Convert_WIN32_FIND_DATA_to_FileInfo(fd, fi); + } + else + #endif + { + WIN32_FIND_DATAW fd; + if (!::FindNextFileW(_handle, &fd)) + return false; + Convert_WIN32_FIND_DATA_to_FileInfo(fd, fi); + } + return true; +} + +#if defined(_WIN32) && !defined(UNDER_CE) + +//////////////////////////////// +// AltStreams + +static FindFirstStreamW_Ptr g_FindFirstStreamW; +static FindNextStreamW_Ptr g_FindNextStreamW; + +static struct CFindStreamLoader +{ + CFindStreamLoader() + { + HMODULE hm = ::GetModuleHandleA("kernel32.dll"); + g_FindFirstStreamW = (FindFirstStreamW_Ptr)(void *)::GetProcAddress(hm, "FindFirstStreamW"); + g_FindNextStreamW = (FindNextStreamW_Ptr)(void *)::GetProcAddress(hm, "FindNextStreamW"); + } +} g_FindStreamLoader; + +bool CStreamInfo::IsMainStream() const throw() +{ + return StringsAreEqualNoCase_Ascii(Name, "::$DATA"); +}; + +UString CStreamInfo::GetReducedName() const +{ + // remove ":$DATA" postfix, but keep postfix, if Name is "::$DATA" + UString s (Name); + if (s.Len() > 6 + 1 && StringsAreEqualNoCase_Ascii(s.RightPtr(6), ":$DATA")) + s.DeleteFrom(s.Len() - 6); + return s; +} + +/* +UString CStreamInfo::GetReducedName2() const +{ + UString s = GetReducedName(); + if (!s.IsEmpty() && s[0] == ':') + s.Delete(0); + return s; +} +*/ + +static void Convert_WIN32_FIND_STREAM_DATA_to_StreamInfo(const MY_WIN32_FIND_STREAM_DATA &sd, CStreamInfo &si) +{ + si.Size = (UInt64)sd.StreamSize.QuadPart; + si.Name = sd.cStreamName; +} + +/* + WinXP-64 FindFirstStream(): + "" - ERROR_PATH_NOT_FOUND + folder\ - OK + folder - OK + \ - OK + c:\ - OK + c: - OK, if current dir is ROOT ( c:\ ) + c: - OK, if current dir is NOT ROOT ( c:\folder ) + \\Server\Share - OK + \\Server\Share\ - OK + + \\ - ERROR_INVALID_NAME + \\Server - ERROR_INVALID_NAME + \\Server\ - ERROR_INVALID_NAME +*/ + +bool CFindStream::FindFirst(CFSTR path, CStreamInfo &si) +{ + if (!Close()) + return false; + if (!g_FindFirstStreamW) + { + ::SetLastError(ERROR_CALL_NOT_IMPLEMENTED); + return false; + } + { + MY_WIN32_FIND_STREAM_DATA sd; + SetLastError(0); + IF_USE_MAIN_PATH + _handle = g_FindFirstStreamW(fs2us(path), My_FindStreamInfoStandard, &sd, 0); + if (_handle == INVALID_HANDLE_VALUE) + { + if (::GetLastError() == ERROR_HANDLE_EOF) + return false; + // long name can be tricky for path like ".\dirName". + #ifdef WIN_LONG_PATH + if (USE_SUPER_PATH) + { + UString superPath; + if (GetSuperPath(path, superPath, USE_MAIN_PATH)) + _handle = g_FindFirstStreamW(superPath, My_FindStreamInfoStandard, &sd, 0); + } + #endif + } + if (_handle == INVALID_HANDLE_VALUE) + return false; + Convert_WIN32_FIND_STREAM_DATA_to_StreamInfo(sd, si); + } + return true; +} + +bool CFindStream::FindNext(CStreamInfo &si) +{ + if (!g_FindNextStreamW) + { + ::SetLastError(ERROR_CALL_NOT_IMPLEMENTED); + return false; + } + { + MY_WIN32_FIND_STREAM_DATA sd; + if (!g_FindNextStreamW(_handle, &sd)) + return false; + Convert_WIN32_FIND_STREAM_DATA_to_StreamInfo(sd, si); + } + return true; +} + +bool CStreamEnumerator::Next(CStreamInfo &si, bool &found) +{ + bool res; + if (_find.IsHandleAllocated()) + res = _find.FindNext(si); + else + res = _find.FindFirst(_filePath, si); + if (res) + { + found = true; + return true; + } + found = false; + return (::GetLastError() == ERROR_HANDLE_EOF); +} + +#endif + + +/* +WinXP-64 GetFileAttributes(): + If the function fails, it returns INVALID_FILE_ATTRIBUTES and use GetLastError() to get error code + + \ - OK + C:\ - OK, if there is such drive, + D:\ - ERROR_PATH_NOT_FOUND, if there is no such drive, + + C:\folder - OK + C:\folder\ - OK + C:\folderBad - ERROR_FILE_NOT_FOUND + + \\Server\BadShare - ERROR_BAD_NETPATH + \\Server\Share - WORKS OK, but MSDN says: + GetFileAttributes for a network share, the function fails, and GetLastError + returns ERROR_BAD_NETPATH. You must specify a path to a subfolder on that share. +*/ + +DWORD GetFileAttrib(CFSTR path) +{ + #ifndef _UNICODE + if (!g_IsNT) + return ::GetFileAttributes(fs2fas(path)); + else + #endif + { + IF_USE_MAIN_PATH + { + DWORD dw = ::GetFileAttributesW(fs2us(path)); + if (dw != INVALID_FILE_ATTRIBUTES) + return dw; + } + #ifdef WIN_LONG_PATH + if (USE_SUPER_PATH) + { + UString superPath; + if (GetSuperPath(path, superPath, USE_MAIN_PATH)) + return ::GetFileAttributesW(superPath); + } + #endif + return INVALID_FILE_ATTRIBUTES; + } +} + +/* if path is "c:" or "c::" then CFileInfo::Find() returns name of current folder for that disk + so instead of absolute path we have relative path in Name. That is not good in some calls */ + +/* In CFileInfo::Find() we want to support same names for alt streams as in CreateFile(). */ + +/* CFileInfo::Find() +We alow the following paths (as FindFirstFile): + C:\folder + c: - if current dir is NOT ROOT ( c:\folder ) + +also we support paths that are not supported by FindFirstFile: + \ + \\.\c: + c:\ - Name will be without tail slash ( c: ) + \\?\c:\ - Name will be without tail slash ( c: ) + \\Server\Share + \\?\UNC\Server\Share + + c:\folder:stream - Name = folder:stream + c:\:stream - Name = :stream + c::stream - Name = c::stream +*/ + +bool CFileInfo::Find(CFSTR path, bool followLink) +{ + #ifdef SUPPORT_DEVICE_FILE + if (IsDevicePath(path)) + { + ClearBase(); + Name = path + 4; + IsDevice = true; + + if (NName::IsDrivePath2(path + 4) && path[6] == 0) + { + FChar drive[4] = { path[4], ':', '\\', 0 }; + UInt64 clusterSize, totalSize, freeSize; + if (NSystem::MyGetDiskFreeSpace(drive, clusterSize, totalSize, freeSize)) + { + Size = totalSize; + return true; + } + } + + NIO::CInFile inFile; + // ::OutputDebugStringW(path); + if (!inFile.Open(path)) + return false; + // ::OutputDebugStringW(L"---"); + if (inFile.SizeDefined) + Size = inFile.Size; + return true; + } + #endif + + #if defined(_WIN32) && !defined(UNDER_CE) + + int colonPos = FindAltStreamColon(path); + if (colonPos >= 0 && path[(unsigned)colonPos + 1] != 0) + { + UString streamName = fs2us(path + (unsigned)colonPos); + FString filePath (path); + filePath.DeleteFrom((unsigned)colonPos); + /* we allow both cases: + name:stream + name:stream:$DATA + */ + const unsigned kPostfixSize = 6; + if (streamName.Len() <= kPostfixSize + || !StringsAreEqualNoCase_Ascii(streamName.RightPtr(kPostfixSize), ":$DATA")) + streamName += ":$DATA"; + + bool isOk = true; + + if (IsDrivePath2(filePath) && + (colonPos == 2 || (colonPos == 3 && filePath[2] == '\\'))) + { + // FindFirstFile doesn't work for "c:\" and for "c:" (if current dir is ROOT) + ClearBase(); + Name.Empty(); + if (colonPos == 2) + Name = filePath; + } + else + isOk = Find(filePath, followLink); // check it (followLink) + + if (isOk) + { + Attrib &= ~(DWORD)(FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT); + Size = 0; + CStreamEnumerator enumerator(filePath); + for (;;) + { + CStreamInfo si; + bool found; + if (!enumerator.Next(si, found)) + return false; + if (!found) + { + ::SetLastError(ERROR_FILE_NOT_FOUND); + return false; + } + if (si.Name.IsEqualTo_NoCase(streamName)) + { + // we delete postfix, if alt stream name is not "::$DATA" + if (si.Name.Len() > kPostfixSize + 1) + si.Name.DeleteFrom(si.Name.Len() - kPostfixSize); + Name += us2fs(si.Name); + Size = si.Size; + IsAltStream = true; + return true; + } + } + } + } + + #endif + + CFindFile finder; + + #if defined(_WIN32) && !defined(UNDER_CE) + { + /* + DWORD lastError = GetLastError(); + if (lastError == ERROR_FILE_NOT_FOUND + || lastError == ERROR_BAD_NETPATH // XP64: "\\Server\Share" + || lastError == ERROR_BAD_NET_NAME // Win7: "\\Server\Share" + || lastError == ERROR_INVALID_NAME // XP64: "\\?\UNC\Server\Share" + || lastError == ERROR_BAD_PATHNAME // Win7: "\\?\UNC\Server\Share" + ) + */ + + unsigned rootSize = 0; + if (IsSuperPath(path)) + rootSize = kSuperPathPrefixSize; + + if (NName::IsDrivePath(path + rootSize) && path[rootSize + 3] == 0) + { + DWORD attrib = GetFileAttrib(path); + if (attrib != INVALID_FILE_ATTRIBUTES && (attrib & FILE_ATTRIBUTE_DIRECTORY) != 0) + { + ClearBase(); + Attrib = attrib; + Name = path + rootSize; + Name.DeleteFrom(2); + if (!Fill_From_ByHandleFileInfo(path)) + { + } + return true; + } + } + else if (IS_PATH_SEPAR(path[0])) + { + if (path[1] == 0) + { + DWORD attrib = GetFileAttrib(path); + if (attrib != INVALID_FILE_ATTRIBUTES && (attrib & FILE_ATTRIBUTE_DIRECTORY) != 0) + { + ClearBase(); + Name.Empty(); + Attrib = attrib; + return true; + } + } + else + { + const unsigned prefixSize = GetNetworkServerPrefixSize(path); + if (prefixSize > 0 && path[prefixSize] != 0) + { + if (NName::FindSepar(path + prefixSize) < 0) + { + if (Fill_From_ByHandleFileInfo(path)) + { + Name = path + prefixSize; + return true; + } + + FString s (path); + s.Add_PathSepar(); + s += '*'; // CHAR_ANY_MASK + bool isOK = false; + if (finder.FindFirst(s, *this)) + { + if (Name == FTEXT(".")) + { + Name = path + prefixSize; + return true; + } + isOK = true; + /* if "\\server\share" maps to root folder "d:\", there is no "." item. + But it's possible that there are another items */ + } + { + DWORD attrib = GetFileAttrib(path); + if (isOK || (attrib != INVALID_FILE_ATTRIBUTES && (attrib & FILE_ATTRIBUTE_DIRECTORY) != 0)) + { + ClearBase(); + if (attrib != INVALID_FILE_ATTRIBUTES) + Attrib = attrib; + else + SetAsDir(); + Name = path + prefixSize; + return true; + } + } + // ::SetLastError(lastError); + } + } + } + } + } + #endif + + bool res = finder.FindFirst(path, *this); + if (!followLink + || !res + || !HasReparsePoint()) + return res; + + // return FollowReparse(path, IsDir()); + return Fill_From_ByHandleFileInfo(path); +} + +bool CFileInfo::Fill_From_ByHandleFileInfo(CFSTR path) +{ + BY_HANDLE_FILE_INFORMATION info; + if (!NIO::CFileBase::GetFileInformation(path, &info)) + return false; + { + Size = (((UInt64)info.nFileSizeHigh) << 32) + info.nFileSizeLow; + CTime = info.ftCreationTime; + ATime = info.ftLastAccessTime; + MTime = info.ftLastWriteTime; + Attrib = info.dwFileAttributes; + return true; + } +} + +/* +bool CFileInfo::FollowReparse(CFSTR path, bool isDir) +{ + if (isDir) + { + FString prefix = path; + prefix.Add_PathSepar(); + + // "folder/." refers to folder itself. So we can't use that path + // we must use enumerator and search "." item + CEnumerator enumerator; + enumerator.SetDirPrefix(prefix); + for (;;) + { + CFileInfo fi; + if (!enumerator.NextAny(fi)) + break; + if (fi.Name.IsEqualTo_Ascii_NoCase(".")) + { + // we can copy preperies; + CTime = fi.CTime; + ATime = fi.ATime; + MTime = fi.MTime; + Attrib = fi.Attrib; + Size = fi.Size; + return true; + } + break; + } + // LastError(lastError); + return false; + } + + { + NIO::CInFile inFile; + if (inFile.Open(path)) + { + BY_HANDLE_FILE_INFORMATION info; + if (inFile.GetFileInformation(&info)) + { + ClearBase(); + Size = (((UInt64)info.nFileSizeHigh) << 32) + info.nFileSizeLow; + CTime = info.ftCreationTime; + ATime = info.ftLastAccessTime; + MTime = info.ftLastWriteTime; + Attrib = info.dwFileAttributes; + return true; + } + } + return false; + } +} +*/ + +bool DoesFileExist_Raw(CFSTR name) +{ + CFileInfo fi; + return fi.Find(name) && !fi.IsDir(); +} + +bool DoesFileExist_FollowLink(CFSTR name) +{ + CFileInfo fi; + return fi.Find_FollowLink(name) && !fi.IsDir(); +} + +bool DoesDirExist(CFSTR name, bool followLink) +{ + CFileInfo fi; + return fi.Find(name, followLink) && fi.IsDir(); +} + +bool DoesFileOrDirExist(CFSTR name) +{ + CFileInfo fi; + return fi.Find(name); +} + + +void CEnumerator::SetDirPrefix(const FString &dirPrefix) +{ + _wildcard = dirPrefix; + _wildcard += '*'; +} + +bool CEnumerator::NextAny(CFileInfo &fi) +{ + if (_findFile.IsHandleAllocated()) + return _findFile.FindNext(fi); + else + return _findFile.FindFirst(_wildcard, fi); +} + +bool CEnumerator::Next(CFileInfo &fi) +{ + for (;;) + { + if (!NextAny(fi)) + return false; + if (!fi.IsDots()) + return true; + } +} + +bool CEnumerator::Next(CFileInfo &fi, bool &found) +{ + /* + for (;;) + { + if (!NextAny(fi)) + break; + if (!fi.IsDots()) + { + found = true; + return true; + } + } + */ + + if (Next(fi)) + { + found = true; + return true; + } + + found = false; + DWORD lastError = ::GetLastError(); + if (_findFile.IsHandleAllocated()) + return (lastError == ERROR_NO_MORE_FILES); + // we support the case for empty root folder: FindFirstFile("c:\\*") returns ERROR_FILE_NOT_FOUND + if (lastError == ERROR_FILE_NOT_FOUND) + return true; + if (lastError == ERROR_ACCESS_DENIED) + { + // here we show inaccessible root system folder as empty folder to eliminate redundant user warnings + const char *s = "System Volume Information" STRING_PATH_SEPARATOR "*"; + const int len = (int)strlen(s); + const int delta = (int)_wildcard.Len() - len; + if (delta == 0 || (delta > 0 && IS_PATH_SEPAR(_wildcard[(unsigned)delta - 1]))) + if (StringsAreEqual_Ascii(_wildcard.Ptr((unsigned)delta), s)) + return true; + } + return false; +} + + +//////////////////////////////// +// CFindChangeNotification +// FindFirstChangeNotification can return 0. MSDN doesn't tell about it. + +bool CFindChangeNotification::Close() throw() +{ + if (!IsHandleAllocated()) + return true; + if (!::FindCloseChangeNotification(_handle)) + return false; + _handle = INVALID_HANDLE_VALUE; + return true; +} + +HANDLE CFindChangeNotification::FindFirst(CFSTR path, bool watchSubtree, DWORD notifyFilter) +{ + #ifndef _UNICODE + if (!g_IsNT) + _handle = ::FindFirstChangeNotification(fs2fas(path), BoolToBOOL(watchSubtree), notifyFilter); + else + #endif + { + IF_USE_MAIN_PATH + _handle = ::FindFirstChangeNotificationW(fs2us(path), BoolToBOOL(watchSubtree), notifyFilter); + #ifdef WIN_LONG_PATH + if (!IsHandleAllocated()) + { + UString superPath; + if (GetSuperPath(path, superPath, USE_MAIN_PATH)) + _handle = ::FindFirstChangeNotificationW(superPath, BoolToBOOL(watchSubtree), notifyFilter); + } + #endif + } + return _handle; +} + +#ifndef UNDER_CE + +bool MyGetLogicalDriveStrings(CObjectVector &driveStrings) +{ + driveStrings.Clear(); + #ifndef _UNICODE + if (!g_IsNT) + { + driveStrings.Clear(); + UINT32 size = GetLogicalDriveStrings(0, NULL); + if (size == 0) + return false; + CObjArray buf(size); + UINT32 newSize = GetLogicalDriveStrings(size, buf); + if (newSize == 0 || newSize > size) + return false; + AString s; + UINT32 prev = 0; + for (UINT32 i = 0; i < newSize; i++) + { + if (buf[i] == 0) + { + s = buf + prev; + prev = i + 1; + driveStrings.Add(fas2fs(s)); + } + } + return prev == newSize; + } + else + #endif + { + UINT32 size = GetLogicalDriveStringsW(0, NULL); + if (size == 0) + return false; + CObjArray buf(size); + UINT32 newSize = GetLogicalDriveStringsW(size, buf); + if (newSize == 0 || newSize > size) + return false; + UString s; + UINT32 prev = 0; + for (UINT32 i = 0; i < newSize; i++) + { + if (buf[i] == 0) + { + s = buf + prev; + prev = i + 1; + driveStrings.Add(us2fs(s)); + } + } + return prev == newSize; + } +} + +#endif // UNDER_CE + + + +#else // _WIN32 + +// ---------- POSIX ---------- + +static int MY__lstat(CFSTR path, struct stat *st, bool followLink) +{ + memset(st, 0, sizeof(*st)); + int res; + // #ifdef ENV_HAVE_LSTAT + if (/* global_use_lstat && */ !followLink) + { + // printf("\nlstat\n"); + res = lstat(path, st); + } + else + // #endif + { + // printf("\nstat\n"); + res = stat(path, st); + } + /* + printf("\nres = %d\n", res); + printf("\n st_dev = %lld \n", (long long)(st->st_dev)); + printf("\n st_ino = %lld \n", (long long)(st->st_ino)); + printf("\n st_mode = %lld \n", (long long)(st->st_mode)); + printf("\n st_nlink = %lld \n", (long long)(st->st_nlink)); + printf("\n st_uid = %lld \n", (long long)(st->st_uid)); + printf("\n st_gid = %lld \n", (long long)(st->st_gid)); + printf("\n st_size = %lld \n", (long long)(st->st_size)); + printf("\n st_blksize = %lld \n", (long long)(st->st_blksize)); + printf("\n st_blocks = %lld \n", (long long)(st->st_blocks)); + */ + + return res; +} + + +static const char *Get_Name_from_Path(CFSTR path) throw() +{ + size_t len = strlen(path); + if (len == 0) + return path; + const char *p = path + len - 1; + { + if (p == path) + return path; + p--; + } + for (;;) + { + char c = *p; + if (IS_PATH_SEPAR(c)) + return p + 1; + if (p == path) + return path; + p--; + } +} + + +void timespec_To_FILETIME(const MY_ST_TIMESPEC &ts, FILETIME &ft) +{ + UInt64 v = NTime::UnixTime64ToFileTime64(ts.tv_sec) + ((UInt64)ts.tv_nsec / 100); + ft.dwLowDateTime = (DWORD)v; + ft.dwHighDateTime = (DWORD)(v >> 32); +} + +UInt32 Get_WinAttribPosix_From_PosixMode(UInt32 mode) +{ + UInt32 attrib = S_ISDIR(mode) ? + FILE_ATTRIBUTE_DIRECTORY : + FILE_ATTRIBUTE_ARCHIVE; + if ((mode & 0222) == 0) // S_IWUSR in p7zip + attrib |= FILE_ATTRIBUTE_READONLY; + return attrib | FILE_ATTRIBUTE_UNIX_EXTENSION | ((mode & 0xFFFF) << 16); +} + +/* +UInt32 Get_WinAttrib_From_stat(const struct stat &st) +{ + UInt32 attrib = S_ISDIR(st.st_mode) ? + FILE_ATTRIBUTE_DIRECTORY : + FILE_ATTRIBUTE_ARCHIVE; + + if ((st.st_mode & 0222) == 0) // check it !!! + attrib |= FILE_ATTRIBUTE_READONLY; + + attrib |= FILE_ATTRIBUTE_UNIX_EXTENSION + ((st.st_mode & 0xFFFF) << 16); + return attrib; +} +*/ + +void CFileInfo::SetFrom_stat(const struct stat &st) +{ + IsDevice = false; + + if (S_ISDIR(st.st_mode)) + { + Size = 0; + } + else + { + Size = (UInt64)st.st_size; // for a symbolic link, size = size of filename + } + + Attrib = Get_WinAttribPosix_From_PosixMode(st.st_mode); + + // NTime::UnixTimeToFileTime(st.st_ctime, CTime); + // NTime::UnixTimeToFileTime(st.st_mtime, MTime); + // NTime::UnixTimeToFileTime(st.st_atime, ATime); + #ifdef __APPLE__ + // #ifdef _DARWIN_FEATURE_64_BIT_INODE + /* + here we can use birthtime instead of st_ctimespec. + but we use st_ctimespec for compatibility with previous versions and p7zip. + st_birthtimespec in OSX + st_birthtim : at FreeBSD, NetBSD + */ + // timespec_To_FILETIME(st.st_birthtimespec, CTime); + // #else + timespec_To_FILETIME(st.st_ctimespec, CTime); + // #endif + timespec_To_FILETIME(st.st_mtimespec, MTime); + timespec_To_FILETIME(st.st_atimespec, ATime); + #else + timespec_To_FILETIME(st.st_ctim, CTime); + timespec_To_FILETIME(st.st_mtim, MTime); + timespec_To_FILETIME(st.st_atim, ATime); + #endif + + dev = st.st_dev; + ino = st.st_ino; + nlink = st.st_nlink; + mode = st.st_mode; +} + +bool CFileInfo::Find_DontFill_Name(CFSTR path, bool followLink) +{ + struct stat st; + if (MY__lstat(path, &st, followLink) != 0) + return false; + SetFrom_stat(st); + return true; +} + + +bool CFileInfo::Find(CFSTR path, bool followLink) +{ + // printf("\nCEnumerator::Find() name = %s\n", path); + if (!Find_DontFill_Name(path, followLink)) + return false; + + // printf("\nOK\n"); + + Name = Get_Name_from_Path(path); + if (!Name.IsEmpty()) + { + char c = Name.Back(); + if (IS_PATH_SEPAR(c)) + Name.DeleteBack(); + } + return true; +} + + +bool DoesFileExist_Raw(CFSTR name) +{ + // FIXME for symbolic links. + struct stat st; + if (MY__lstat(name, &st, false) != 0) + return false; + return !S_ISDIR(st.st_mode); +} + +bool DoesFileExist_FollowLink(CFSTR name) +{ + // FIXME for symbolic links. + struct stat st; + if (MY__lstat(name, &st, true) != 0) + return false; + return !S_ISDIR(st.st_mode); +} + +bool DoesDirExist(CFSTR name, bool followLink) +{ + struct stat st; + if (MY__lstat(name, &st, followLink) != 0) + return false; + return S_ISDIR(st.st_mode); +} + +bool DoesFileOrDirExist(CFSTR name) +{ + struct stat st; + if (MY__lstat(name, &st, false) != 0) + return false; + return true; +} + + +CEnumerator::~CEnumerator() +{ + if (_dir) + closedir(_dir); +} + +void CEnumerator::SetDirPrefix(const FString &dirPrefix) +{ + _wildcard = dirPrefix; +} + +bool CDirEntry::IsDots() const throw() +{ + /* some systems (like CentOS 7.x on XFS) have (Type == DT_UNKNOWN) + we can call fstatat() for that case, but we use only (Name) check here */ + + #if !defined(_AIX) + if (Type != DT_DIR && Type != DT_UNKNOWN) + return false; + #endif + + return Name.Len() != 0 + && Name.Len() <= 2 + && Name[0] == '.' + && (Name.Len() == 1 || Name[1] == '.'); +} + + +bool CEnumerator::NextAny(CDirEntry &fi, bool &found) +{ + found = false; + + if (!_dir) + { + const char *w = "./"; + if (!_wildcard.IsEmpty()) + w = _wildcard.Ptr(); + _dir = ::opendir((const char *)w); + if (_dir == NULL) + return false; + } + + // To distinguish end of stream from an error, we must set errno to zero before readdir() + errno = 0; + + struct dirent *de = readdir(_dir); + if (!de) + { + if (errno == 0) + return true; // it's end of stream, and we report it with (found = false) + // it's real error + return false; + } + + fi.iNode = de->d_ino; + + #if !defined(_AIX) + fi.Type = de->d_type; + /* some systems (like CentOS 7.x on XFS) have (Type == DT_UNKNOWN) + we can set (Type) from fstatat() in that case. + But (Type) is not too important. So we don't set it here with slow fstatat() */ + /* + // fi.Type = DT_UNKNOWN; // for debug + if (fi.Type == DT_UNKNOWN) + { + struct stat st; + if (fstatat(dirfd(_dir), de->d_name, &st, AT_SYMLINK_NOFOLLOW) == 0) + if (S_ISDIR(st.st_mode)) + fi.Type = DT_DIR; + } + */ + #endif + + /* + if (de->d_type == DT_DIR) + fi.Attrib = FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_UNIX_EXTENSION | ((UInt32)(S_IFDIR) << 16); + else if (de->d_type < 16) + fi.Attrib = FILE_ATTRIBUTE_UNIX_EXTENSION | ((UInt32)(de->d_type) << (16 + 12)); + */ + fi.Name = de->d_name; + + /* + printf("\nCEnumerator::NextAny; len = %d %s \n", (int)fi.Name.Len(), fi.Name.Ptr()); + for (unsigned i = 0; i < fi.Name.Len(); i++) + printf (" %02x", (unsigned)(Byte)de->d_name[i]); + printf("\n"); + */ + + found = true; + return true; +} + + +bool CEnumerator::Next(CDirEntry &fi, bool &found) +{ + // printf("\nCEnumerator::Next()\n"); + // PrintName("Next", ""); + for (;;) + { + if (!NextAny(fi, found)) + return false; + if (!found) + return true; + if (!fi.IsDots()) + { + /* + if (!NeedFullStat) + return true; + // we silently skip error file here - it can be wrong link item + if (fi.Find_DontFill_Name(path)) + return true; + */ + return true; + } + } +} + +/* +bool CEnumerator::Next(CDirEntry &fileInfo, bool &found) +{ + bool found; + if (!Next(fi, found)) + return false; + return found; +} +*/ + +bool CEnumerator::Fill_FileInfo(const CDirEntry &de, CFileInfo &fileInfo, bool followLink) const +{ + // printf("\nCEnumerator::Fill_FileInfo()\n"); + struct stat st; + // probably it's OK to use fstatat() even if it changes file position dirfd(_dir) + int res = fstatat(dirfd(_dir), de.Name, &st, followLink ? 0 : AT_SYMLINK_NOFOLLOW); + // if fstatat() is not supported, we can use stat() / lstat() + + /* + const FString path = _wildcard + s; + int res = MY__lstat(path, &st, followLink); + */ + + if (res != 0) + return false; + fileInfo.SetFrom_stat(st); + fileInfo.Name = de.Name; + return true; +} + +#endif // _WIN32 + +}}} -- cgit v1.2.3-55-g6feb