/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
**
****************************************************************************/
#include "qfilesystemengine_p.h"
#define _POSIX_
#include "qplatformdefs.h"
#include "qabstractfileengine.h"
#include "private/qfsfileengine_p.h"
#include <private/qsystemlibrary_p.h>
#include <qdebug.h>
#include "qfile.h"
#include "qdir.h"
#include "private/qmutexpool_p.h"
#include "qvarlengtharray.h"
#include "qdatetime.h"
#include "qt_windows.h"
#if !defined(Q_OS_WINCE)
# include <sys/types.h>
# include <direct.h>
# include <winioctl.h>
#else
# include <types.h>
#endif
#include <objbase.h>
#include <shlobj.h>
#include <initguid.h>
#include <accctrl.h>
#include <ctype.h>
#include <limits.h>
#define SECURITY_WIN32
#include <security.h>
#ifndef SPI_GETPLATFORMTYPE
#define SPI_GETPLATFORMTYPE 257
#endif
#ifndef PATH_MAX
#define PATH_MAX FILENAME_MAX
#endif
#ifndef _INTPTR_T_DEFINED
#ifdef _WIN64
typedef __int64 intptr_t;
#else
#ifdef _W64
typedef _W64 int intptr_t;
#else
typedef INT_PTR intptr_t;
#endif
#endif
#define _INTPTR_T_DEFINED
#endif
#ifndef INVALID_FILE_ATTRIBUTES
# define INVALID_FILE_ATTRIBUTES (DWORD (-1))
#endif
#if !defined(Q_OS_WINCE)
# if !defined(REPARSE_DATA_BUFFER_HEADER_SIZE)
typedef struct _REPARSE_DATA_BUFFER {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
union {
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[1];
} SymbolicLinkReparseBuffer;
struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
WCHAR PathBuffer[1];
} MountPointReparseBuffer;
struct {
UCHAR DataBuffer[1];
} GenericReparseBuffer;
};
} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
# define REPARSE_DATA_BUFFER_HEADER_SIZE FIELD_OFFSET(REPARSE_DATA_BUFFER, GenericReparseBuffer)
# endif // !defined(REPARSE_DATA_BUFFER_HEADER_SIZE)
# ifndef MAXIMUM_REPARSE_DATA_BUFFER_SIZE
# define MAXIMUM_REPARSE_DATA_BUFFER_SIZE 16384
# endif
# ifndef IO_REPARSE_TAG_SYMLINK
# define IO_REPARSE_TAG_SYMLINK (0xA000000CL)
# endif
# ifndef FSCTL_GET_REPARSE_POINT
# define FSCTL_GET_REPARSE_POINT CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 42, METHOD_BUFFERED, FILE_ANY_ACCESS)
# endif
#endif // !defined(Q_OS_WINCE)
QT_BEGIN_NAMESPACE
Q_CORE_EXPORT int qt_ntfs_permission_lookup = 0;
#if defined(Q_OS_WINCE)
static QString qfsPrivateCurrentDir = QLatin1String("");
// As none of the functions we try to resolve do exist on Windows CE
// we use QT_NO_LIBRARY to shorten everything up a little bit.
#define QT_NO_LIBRARY 1
#endif
#if !defined(QT_NO_LIBRARY)
QT_BEGIN_INCLUDE_NAMESPACE
typedef DWORD (WINAPI *PtrGetNamedSecurityInfoW)(LPWSTR, SE_OBJECT_TYPE, SECURITY_INFORMATION, PSID*, PSID*, PACL*, PACL*, PSECURITY_DESCRIPTOR*);
static PtrGetNamedSecurityInfoW ptrGetNamedSecurityInfoW = 0;
typedef BOOL (WINAPI *PtrLookupAccountSidW)(LPCWSTR, PSID, LPWSTR, LPDWORD, LPWSTR, LPDWORD, PSID_NAME_USE);
static PtrLookupAccountSidW ptrLookupAccountSidW = 0;
typedef VOID (WINAPI *PtrBuildTrusteeWithSidW)(PTRUSTEE_W, PSID);
static PtrBuildTrusteeWithSidW ptrBuildTrusteeWithSidW = 0;
typedef DWORD (WINAPI *PtrGetEffectiveRightsFromAclW)(PACL, PTRUSTEE_W, OUT PACCESS_MASK);
static PtrGetEffectiveRightsFromAclW ptrGetEffectiveRightsFromAclW = 0;
static TRUSTEE_W currentUserTrusteeW;
static TRUSTEE_W worldTrusteeW;
typedef BOOL (WINAPI *PtrGetUserProfileDirectoryW)(HANDLE, LPWSTR, LPDWORD);
static PtrGetUserProfileDirectoryW ptrGetUserProfileDirectoryW = 0;
typedef BOOL (WINAPI *PtrGetVolumePathNamesForVolumeNameW)(LPCWSTR,LPWSTR,DWORD,PDWORD);
static PtrGetVolumePathNamesForVolumeNameW ptrGetVolumePathNamesForVolumeNameW = 0;
QT_END_INCLUDE_NAMESPACE
static void resolveLibs()
{
static bool triedResolve = false;
if (!triedResolve) {
// need to resolve the security info functions
// protect initialization
#ifndef QT_NO_THREAD
QMutexLocker locker(QMutexPool::globalInstanceGet(&triedResolve));
// check triedResolve again, since another thread may have already
// done the initialization
if (triedResolve) {
// another thread did initialize the security function pointers,
// so we shouldn't do it again.
return;
}
#endif
triedResolve = true;
#if !defined(Q_OS_WINCE)
HINSTANCE advapiHnd = QSystemLibrary::load(L"advapi32");
if (advapiHnd) {
ptrGetNamedSecurityInfoW = (PtrGetNamedSecurityInfoW)GetProcAddress(advapiHnd, "GetNamedSecurityInfoW");
ptrLookupAccountSidW = (PtrLookupAccountSidW)GetProcAddress(advapiHnd, "LookupAccountSidW");
ptrBuildTrusteeWithSidW = (PtrBuildTrusteeWithSidW)GetProcAddress(advapiHnd, "BuildTrusteeWithSidW");
ptrGetEffectiveRightsFromAclW = (PtrGetEffectiveRightsFromAclW)GetProcAddress(advapiHnd, "GetEffectiveRightsFromAclW");
}
if (ptrBuildTrusteeWithSidW) {
// Create TRUSTEE for current user
HANDLE hnd = ::GetCurrentProcess();
HANDLE token = 0;
if (::OpenProcessToken(hnd, TOKEN_QUERY, &token)) {
TOKEN_USER tu;
DWORD retsize;
if (::GetTokenInformation(token, TokenUser, &tu, sizeof(tu), &retsize))
ptrBuildTrusteeWithSidW(¤tUserTrusteeW, tu.User.Sid);
::CloseHandle(token);
}
typedef BOOL (WINAPI *PtrAllocateAndInitializeSid)(PSID_IDENTIFIER_AUTHORITY, BYTE, DWORD, DWORD, DWORD, DWORD, DWORD, DWORD, DWORD, DWORD, PSID*);
PtrAllocateAndInitializeSid ptrAllocateAndInitializeSid = (PtrAllocateAndInitializeSid)GetProcAddress(advapiHnd, "AllocateAndInitializeSid");
typedef PVOID (WINAPI *PtrFreeSid)(PSID);
PtrFreeSid ptrFreeSid = (PtrFreeSid)GetProcAddress(advapiHnd, "FreeSid");
if (ptrAllocateAndInitializeSid && ptrFreeSid) {
// Create TRUSTEE for Everyone (World)
SID_IDENTIFIER_AUTHORITY worldAuth = { SECURITY_WORLD_SID_AUTHORITY };
PSID pWorld = 0;
if (ptrAllocateAndInitializeSid(&worldAuth, 1, SECURITY_WORLD_RID, 0, 0, 0, 0, 0, 0, 0, &pWorld))
ptrBuildTrusteeWithSidW(&worldTrusteeW, pWorld);
ptrFreeSid(pWorld);
}
}
HINSTANCE userenvHnd = QSystemLibrary::load(L"userenv");
if (userenvHnd)
ptrGetUserProfileDirectoryW = (PtrGetUserProfileDirectoryW)GetProcAddress(userenvHnd, "GetUserProfileDirectoryW");
HINSTANCE kernel32 = LoadLibrary(L"kernel32");
if(kernel32)
ptrGetVolumePathNamesForVolumeNameW = (PtrGetVolumePathNamesForVolumeNameW)GetProcAddress(kernel32, "GetVolumePathNamesForVolumeNameW");
#endif
}
}
#endif // QT_NO_LIBRARY
typedef DWORD (WINAPI *PtrNetShareEnum)(LPWSTR, DWORD, LPBYTE*, DWORD, LPDWORD, LPDWORD, LPDWORD);
static PtrNetShareEnum ptrNetShareEnum = 0;
typedef DWORD (WINAPI *PtrNetApiBufferFree)(LPVOID);
static PtrNetApiBufferFree ptrNetApiBufferFree = 0;
typedef struct _SHARE_INFO_1 {
LPWSTR shi1_netname;
DWORD shi1_type;
LPWSTR shi1_remark;
} SHARE_INFO_1;
static bool resolveUNCLibs()
{
static bool triedResolve = false;
if (!triedResolve) {
#ifndef QT_NO_THREAD
QMutexLocker locker(QMutexPool::globalInstanceGet(&triedResolve));
if (triedResolve) {
return ptrNetShareEnum && ptrNetApiBufferFree;
}
#endif
triedResolve = true;
#if !defined(Q_OS_WINCE)
HINSTANCE hLib = QSystemLibrary::load(L"Netapi32");
if (hLib) {
ptrNetShareEnum = (PtrNetShareEnum)GetProcAddress(hLib, "NetShareEnum");
if (ptrNetShareEnum)
ptrNetApiBufferFree = (PtrNetApiBufferFree)GetProcAddress(hLib, "NetApiBufferFree");
}
#endif
}
return ptrNetShareEnum && ptrNetApiBufferFree;
}
static QString readSymLink(const QFileSystemEntry &link)
{
QString result;
#if !defined(Q_OS_WINCE)
HANDLE handle = CreateFile((wchar_t*)link.nativeFilePath().utf16(),
FILE_READ_EA,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
0,
OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT,
0);
if (handle != INVALID_HANDLE_VALUE) {
DWORD bufsize = MAXIMUM_REPARSE_DATA_BUFFER_SIZE;
REPARSE_DATA_BUFFER *rdb = (REPARSE_DATA_BUFFER*)qMalloc(bufsize);
DWORD retsize = 0;
if (::DeviceIoControl(handle, FSCTL_GET_REPARSE_POINT, 0, 0, rdb, bufsize, &retsize, 0)) {
if (rdb->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT) {
int length = rdb->MountPointReparseBuffer.SubstituteNameLength / sizeof(wchar_t);
int offset = rdb->MountPointReparseBuffer.SubstituteNameOffset / sizeof(wchar_t);
const wchar_t* PathBuffer = &rdb->MountPointReparseBuffer.PathBuffer[offset];
result = QString::fromWCharArray(PathBuffer, length);
} else if (rdb->ReparseTag == IO_REPARSE_TAG_SYMLINK) {
int length = rdb->SymbolicLinkReparseBuffer.SubstituteNameLength / sizeof(wchar_t);
int offset = rdb->SymbolicLinkReparseBuffer.SubstituteNameOffset / sizeof(wchar_t);
const wchar_t* PathBuffer = &rdb->SymbolicLinkReparseBuffer.PathBuffer[offset];
result = QString::fromWCharArray(PathBuffer, length);
}
// cut-off "//?/" and "/??/"
if (result.size() > 4 && result.at(0) == QLatin1Char('\\') && result.at(2) == QLatin1Char('?') && result.at(3) == QLatin1Char('\\'))
result = result.mid(4);
}
qFree(rdb);
CloseHandle(handle);
#if !defined(QT_NO_LIBRARY)
resolveLibs();
if (ptrGetVolumePathNamesForVolumeNameW) {
QRegExp matchVolName(QLatin1String("^Volume\\{([a-z]|[0-9]|-)+\\}\\\\"), Qt::CaseInsensitive);
if(matchVolName.indexIn(result) == 0) {
DWORD len;
wchar_t buffer[MAX_PATH];
QString volumeName = result.mid(0, matchVolName.matchedLength()).prepend(QLatin1String("\\\\?\\"));
if(ptrGetVolumePathNamesForVolumeNameW((wchar_t*)volumeName.utf16(), buffer, MAX_PATH, &len) != 0)
result.replace(0,matchVolName.matchedLength(), QString::fromWCharArray(buffer));
}
}
#endif
}
#else
Q_UNUSED(link);
#endif // Q_OS_WINCE
return result;
}
static QString readLink(const QFileSystemEntry &link)
{
#if !defined(Q_OS_WINCE)
#if !defined(QT_NO_LIBRARY) && !defined(Q_CC_MWERKS)
QString ret;
bool neededCoInit = false;
IShellLink *psl; // pointer to IShellLink i/f
WIN32_FIND_DATA wfd;
wchar_t szGotPath[MAX_PATH];
// Get pointer to the IShellLink interface.
HRESULT hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (LPVOID *)&psl);
if (hres == CO_E_NOTINITIALIZED) { // COM was not initialized
neededCoInit = true;
CoInitialize(NULL);
hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
IID_IShellLink, (LPVOID *)&psl);
}
if (SUCCEEDED(hres)) { // Get pointer to the IPersistFile interface.
IPersistFile *ppf;
hres = psl->QueryInterface(IID_IPersistFile, (LPVOID *)&ppf);
if (SUCCEEDED(hres)) {
hres = ppf->Load((LPOLESTR)link.nativeFilePath().utf16(), STGM_READ);
//The original path of the link is retrieved. If the file/folder
//was moved, the return value still have the old path.
if (SUCCEEDED(hres)) {
if (psl->GetPath(szGotPath, MAX_PATH, &wfd, SLGP_UNCPRIORITY) == NOERROR)
ret = QString::fromWCharArray(szGotPath);
}
ppf->Release();
}
psl->Release();
}
if (neededCoInit)
CoUninitialize();
return ret;
#else
Q_UNUSED(link);
return QString();
#endif // QT_NO_LIBRARY
#else
wchar_t target[MAX_PATH];
QString result;
if (SHGetShortcutTarget((wchar_t*)QFileInfo(link.filePath()).absoluteFilePath().replace(QLatin1Char('/'),QLatin1Char('\\')).utf16(), target, MAX_PATH)) {
result = QString::fromWCharArray(target);
if (result.startsWith(QLatin1Char('"')))
result.remove(0,1);
if (result.endsWith(QLatin1Char('"')))
result.remove(result.size()-1,1);
}
return result;
#endif // Q_OS_WINCE
}
static bool uncShareExists(const QString &server)
{
// This code assumes the UNC path is always like \\?\UNC\server...
QStringList parts = server.split(QLatin1Char('\\'), QString::SkipEmptyParts);
if (parts.count() >= 3) {
QStringList shares;
if (QFileSystemEngine::uncListSharesOnServer(QLatin1String("\\\\") + parts.at(2), &shares))
return parts.count() >= 4 ? shares.contains(parts.at(3), Qt::CaseInsensitive) : true;
}
return false;
}
static inline bool getFindData(QString path, WIN32_FIND_DATA &findData)
{
// path should not end with a trailing slash
while (path.endsWith(QLatin1Char('\\')))
path.chop(1);
// can't handle drives
if (!path.endsWith(QLatin1Char(':'))) {
HANDLE hFind = ::FindFirstFile((wchar_t*)path.utf16(), &findData);
if (hFind != INVALID_HANDLE_VALUE) {
::FindClose(hFind);
return true;
}
}
return false;
}
bool QFileSystemEngine::uncListSharesOnServer(const QString &server, QStringList *list)
{
if (resolveUNCLibs()) {
SHARE_INFO_1 *BufPtr, *p;
DWORD res;
DWORD er = 0, tr = 0, resume = 0, i;
do {
res = ptrNetShareEnum((wchar_t*)server.utf16(), 1, (LPBYTE *)&BufPtr, DWORD(-1), &er, &tr, &resume);
if (res == ERROR_SUCCESS || res == ERROR_MORE_DATA) {
p = BufPtr;
for (i = 1; i <= er; ++i) {
if (list && p->shi1_type == 0)
list->append(QString::fromWCharArray(p->shi1_netname));
p++;
}
}
ptrNetApiBufferFree(BufPtr);
} while (res == ERROR_MORE_DATA);
return res == ERROR_SUCCESS;
}
return false;
}
void QFileSystemEngine::clearWinStatData(QFileSystemMetaData &data)
{
data.size_ = 0;
data.fileAttribute_ = 0;
data.creationTime_ = FILETIME();
data.lastAccessTime_ = FILETIME();
data.lastWriteTime_ = FILETIME();
}
bool QFileSystemEngine::isCaseSensitive()
{
return false;
}
//static
QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link,
QFileSystemMetaData &data)
{
if (data.missingFlags(QFileSystemMetaData::LinkType))
QFileSystemEngine::fillMetaData(link, data, QFileSystemMetaData::LinkType);
QString ret;
if (data.isLnkFile())
ret = readLink(link);
else if (data.isLink())
ret = readSymLink(link);
return QFileSystemEntry(ret);
}
//static
QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
{
if (data.missingFlags(QFileSystemMetaData::ExistsAttribute))
QFileSystemEngine::fillMetaData(entry, data, QFileSystemMetaData::ExistsAttribute);
if (data.exists())
return QFileSystemEntry(slowCanonicalized(absoluteName(entry).filePath()));
else
return QFileSystemEntry();
}
//static
QString QFileSystemEngine::nativeAbsoluteFilePath(const QString &path)
{
// can be //server or //server/share
QString absPath;
#if !defined(Q_OS_WINCE)
QVarLengthArray<wchar_t, MAX_PATH> buf(qMax(MAX_PATH, path.size() + 1));
wchar_t *fileName = 0;
DWORD retLen = GetFullPathName((wchar_t*)path.utf16(), buf.size(), buf.data(), &fileName);
if (retLen > (DWORD)buf.size()) {
buf.resize(retLen);
retLen = GetFullPathName((wchar_t*)path.utf16(), buf.size(), buf.data(), &fileName);
}
if (retLen != 0)
absPath = QString::fromWCharArray(buf.data(), retLen);
#else
if (path.startsWith(QLatin1Char('/')) || path.startsWith(QLatin1Char('\\')))
absPath = QDir::toNativeSeparators(path);
else
absPath = QDir::toNativeSeparators(QDir::cleanPath(qfsPrivateCurrentDir + QLatin1Char('/') + path));
#endif
// This is really ugly, but GetFullPathName strips off whitespace at the end.
// If you for instance write ". " in the lineedit of QFileDialog,
// (which is an invalid filename) this function will strip the space off and viola,
// the file is later reported as existing. Therefore, we re-add the whitespace that
// was at the end of path in order to keep the filename invalid.
if (!path.isEmpty() && path.at(path.size() - 1) == QLatin1Char(' '))
absPath.append(QLatin1Char(' '));
return absPath;
}
//static
QFileSystemEntry QFileSystemEngine::absoluteName(const QFileSystemEntry &entry)
{
QString ret;
if (!entry.isRelative()) {
#if !defined(Q_OS_WINCE)
if (entry.isAbsolute()
&& !entry.filePath().contains(QLatin1String("/../"))
&& !entry.filePath().contains(QLatin1String("/./"))
&& !entry.filePath().endsWith(QLatin1String("/.."))
&& !entry.filePath().endsWith(QLatin1String("/."))) {
ret = entry.filePath();
} else {
ret = QDir::fromNativeSeparators(nativeAbsoluteFilePath(entry.filePath()));
}
#else
ret = entry.filePath();
#endif
} else {
ret = QDir::cleanPath(QDir::currentPath() + QLatin1Char('/') + entry.filePath());
}
// The path should be absolute at this point.
// From the docs :
// Absolute paths begin with the directory separator "/"
// (optionally preceded by a drive specification under Windows).
if (ret.at(0) != QLatin1Char('/')) {
Q_ASSERT(ret.length() >= 2);
Q_ASSERT(ret.at(0).isLetter());
Q_ASSERT(ret.at(1) == QLatin1Char(':'));
// Force uppercase drive letters.
ret[0] = ret.at(0).toUpper();
}
return QFileSystemEntry(ret);
}
//static
QString QFileSystemEngine::owner(const QFileSystemEntry &entry, QAbstractFileEngine::FileOwner own)
{
QString name;
#if !defined(QT_NO_LIBRARY)
extern int qt_ntfs_permission_lookup;
if((qt_ntfs_permission_lookup > 0) && (QSysInfo::WindowsVersion & QSysInfo::WV_NT_based)) {
resolveLibs();
if (ptrGetNamedSecurityInfoW && ptrLookupAccountSidW) {
PSID pOwner = 0;
PSECURITY_DESCRIPTOR pSD;
if (ptrGetNamedSecurityInfoW((wchar_t*)entry.nativeFilePath().utf16(), SE_FILE_OBJECT,
own == QAbstractFileEngine::OwnerGroup ? GROUP_SECURITY_INFORMATION : OWNER_SECURITY_INFORMATION,
own == QAbstractFileEngine::OwnerUser ? &pOwner : 0, own == QAbstractFileEngine::OwnerGroup ? &pOwner : 0,
0, 0, &pSD) == ERROR_SUCCESS) {
DWORD lowner = 64;
DWORD ldomain = 64;
QVarLengthArray<wchar_t, 64> owner(lowner);
QVarLengthArray<wchar_t, 64> domain(ldomain);
SID_NAME_USE use = SidTypeUnknown;
// First call, to determine size of the strings (with '\0').
if (!ptrLookupAccountSidW(NULL, pOwner, (LPWSTR)owner.data(), &lowner,
(LPWSTR)domain.data(), &ldomain, (SID_NAME_USE*)&use)) {
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
if (lowner > (DWORD)owner.size())
owner.resize(lowner);
if (ldomain > (DWORD)domain.size())
domain.resize(ldomain);
// Second call, try on resized buf-s
if (!ptrLookupAccountSidW(NULL, pOwner, (LPWSTR)owner.data(), &lowner,
(LPWSTR)domain.data(), &ldomain, (SID_NAME_USE*)&use)) {
lowner = 0;
}
} else {
lowner = 0;
}
}
if (lowner != 0)
name = QString::fromWCharArray(owner.data());
LocalFree(pSD);
}
}
}
#else
Q_UNUSED(own);
#endif
return name;
}
//static
bool QFileSystemEngine::fillPermissions(const QFileSystemEntry &entry, QFileSystemMetaData &data,
QFileSystemMetaData::MetaDataFlags what)
{
QAbstractFileEngine::FileFlags ret = 0;
#if !defined(QT_NO_LIBRARY)
if((qt_ntfs_permission_lookup > 0) && (QSysInfo::WindowsVersion & QSysInfo::WV_NT_based)) {
resolveLibs();
if(ptrGetNamedSecurityInfoW && ptrBuildTrusteeWithSidW && ptrGetEffectiveRightsFromAclW) {
enum { ReadMask = 0x00000001, WriteMask = 0x00000002, ExecMask = 0x00000020 };
QString fname = entry.filePath();
PSID pOwner = 0;
PSID pGroup = 0;
PACL pDacl;
PSECURITY_DESCRIPTOR pSD;
DWORD res = ptrGetNamedSecurityInfoW((wchar_t*)fname.utf16(), SE_FILE_OBJECT,
OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION,
&pOwner, &pGroup, &pDacl, 0, &pSD);
if(res == ERROR_SUCCESS) {
ACCESS_MASK access_mask;
TRUSTEE_W trustee;
if (what & QFileSystemMetaData::UserPermissions) { // user
data.knownFlagsMask |= QFileSystemMetaData::UserPermissions;
if(ptrGetEffectiveRightsFromAclW(pDacl, ¤tUserTrusteeW, &access_mask) != ERROR_SUCCESS)
access_mask = (ACCESS_MASK)-1;
if(access_mask & ReadMask)
data.entryFlags |= QFileSystemMetaData::UserReadPermission;
if(access_mask & WriteMask)
data.entryFlags|= QFileSystemMetaData::UserWritePermission;
if(access_mask & ExecMask)
data.entryFlags|= QFileSystemMetaData::UserExecutePermission;
}
if (what & QFileSystemMetaData::OwnerPermissions) { // owner
data.knownFlagsMask |= QFileSystemMetaData::OwnerPermissions;
ptrBuildTrusteeWithSidW(&trustee, pOwner);
if(ptrGetEffectiveRightsFromAclW(pDacl, &trustee, &access_mask) != ERROR_SUCCESS)
access_mask = (ACCESS_MASK)-1;
if(access_mask & ReadMask)
data.entryFlags |= QFileSystemMetaData::OwnerReadPermission;
if(access_mask & WriteMask)
data.entryFlags |= QFileSystemMetaData::OwnerWritePermission;
if(access_mask & ExecMask)
data.entryFlags |= QFileSystemMetaData::OwnerExecutePermission;
}
if (what & QFileSystemMetaData::GroupPermissions) { // group
data.knownFlagsMask |= QFileSystemMetaData::GroupPermissions;
ptrBuildTrusteeWithSidW(&trustee, pGroup);
if(ptrGetEffectiveRightsFromAclW(pDacl, &trustee, &access_mask) != ERROR_SUCCESS)
access_mask = (ACCESS_MASK)-1;
if(access_mask & ReadMask)
data.entryFlags |= QFileSystemMetaData::GroupReadPermission;
if(access_mask & WriteMask)
data.entryFlags |= QFileSystemMetaData::GroupWritePermission;
if(access_mask & ExecMask)
data.entryFlags |= QFileSystemMetaData::GroupExecutePermission;
}
if (what & QFileSystemMetaData::OtherPermissions) { // other (world)
data.knownFlagsMask |= QFileSystemMetaData::OtherPermissions;
if(ptrGetEffectiveRightsFromAclW(pDacl, &worldTrusteeW, &access_mask) != ERROR_SUCCESS)
access_mask = (ACCESS_MASK)-1; // ###
if(access_mask & ReadMask)
data.entryFlags |= QFileSystemMetaData::OtherReadPermission;
if(access_mask & WriteMask)
data.entryFlags |= QFileSystemMetaData::OtherWritePermission;
if(access_mask & ExecMask)
data.entryFlags |= QFileSystemMetaData::OwnerExecutePermission;
}
LocalFree(pSD);
}
}
} else
#endif
{
//### what to do with permissions if we don't use NTFS
// for now just add all permissions and what about exe missions ??
// also qt_ntfs_permission_lookup is now not set by default ... should it ?
data.entryFlags |= QFileSystemMetaData::OwnerReadPermission
| QFileSystemMetaData::GroupReadPermission
| QFileSystemMetaData::OtherReadPermission;
if (!(data.fileAttribute_ & FILE_ATTRIBUTE_READONLY)) {
data.entryFlags |= QFileSystemMetaData::OwnerWritePermission
| QFileSystemMetaData::GroupWritePermission
| QFileSystemMetaData::OtherWritePermission;
}
QString fname = entry.filePath();
QString ext = fname.right(4).toLower();
if (data.isDirectory() ||
ext == QLatin1String(".exe") || ext == QLatin1String(".com") || ext == QLatin1String(".bat") ||
ext == QLatin1String(".pif") || ext == QLatin1String(".cmd")) {
data.entryFlags |= QFileSystemMetaData::OwnerExecutePermission | QFileSystemMetaData::GroupExecutePermission
| QFileSystemMetaData::OtherExecutePermission | QFileSystemMetaData::UserExecutePermission;
}
data.knownFlagsMask |= QFileSystemMetaData::OwnerPermissions | QFileSystemMetaData::GroupPermissions
| QFileSystemMetaData::OtherPermissions | QFileSystemMetaData::UserExecutePermission;
// calculate user permissions
if (what & QFileSystemMetaData::UserReadPermission) {
if (::_waccess((wchar_t*)entry.nativeFilePath().utf16(), R_OK) == 0)
data.entryFlags |= QFileSystemMetaData::UserReadPermission;
data.knownFlagsMask |= QFileSystemMetaData::UserReadPermission;
}
if (what & QFileSystemMetaData::UserWritePermission) {
if (::_waccess((wchar_t*)entry.nativeFilePath().utf16(), W_OK) == 0)
data.entryFlags |= QFileSystemMetaData::UserWritePermission;
data.knownFlagsMask |= QFileSystemMetaData::UserReadPermission;
}
}
return data.hasFlags(what);
}
static bool tryDriveUNCFallback(const QFileSystemEntry &fname, QFileSystemMetaData &data)
{
bool entryExists = false;
DWORD fileAttrib = 0;
#if !defined(Q_OS_WINCE)
if (fname.isDriveRoot()) {
// a valid drive ??
DWORD drivesBitmask = ::GetLogicalDrives();
int drivebit = 1 << (fname.filePath().at(0).toUpper().unicode() - QLatin1Char('A').unicode());
if (drivesBitmask & drivebit) {
fileAttrib = FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_SYSTEM;
entryExists = true;
}
} else {
#endif
const QString &path = fname.nativeFilePath();
bool is_dir = false;
if (path.startsWith(QLatin1String("\\\\?\\UNC"))) {
// UNC - stat doesn't work for all cases (Windows bug)
int s = path.indexOf(path.at(0),7);
if (s > 0) {
// "\\?\UNC\server\..."
s = path.indexOf(path.at(0),s+1);
if (s > 0) {
// "\\?\UNC\server\share\..."
if (s == path.size() - 1) {
// "\\?\UNC\server\share\"
is_dir = true;
} else {
// "\\?\UNC\server\share\notfound"
}
} else {
// "\\?\UNC\server\share"
is_dir = true;
}
} else {
// "\\?\UNC\server"
is_dir = true;
}
}
if (is_dir && uncShareExists(path)) {
// looks like a UNC dir, is a dir.
fileAttrib = FILE_ATTRIBUTE_DIRECTORY;
entryExists = true;
}
#if !defined(Q_OS_WINCE)
}
#endif
if (entryExists)
data.fillFromFileAttribute(fileAttrib);
return entryExists;
}
static bool tryFindFallback(const QFileSystemEntry &fname, QFileSystemMetaData &data)
{
bool filledData = false;
// This assumes the last call to a Windows API failed.
int errorCode = GetLastError();
if (errorCode == ERROR_ACCESS_DENIED || errorCode == ERROR_SHARING_VIOLATION) {
WIN32_FIND_DATA findData;
if (getFindData(fname.nativeFilePath(), findData)
&& findData.dwFileAttributes != INVALID_FILE_ATTRIBUTES) {
data.fillFromFindData(findData, true, fname.isDriveRoot());
filledData = true;
}
}
return filledData;
}
#if !defined(Q_OS_WINCE)
//static
bool QFileSystemEngine::fillMetaData(int fd, QFileSystemMetaData &data,
QFileSystemMetaData::MetaDataFlags what)
{
HANDLE fHandle = (HANDLE)_get_osfhandle(fd);
if (fHandle != INVALID_HANDLE_VALUE) {
return fillMetaData(fHandle, data, what);
}
return false;
}
#endif
//static
bool QFileSystemEngine::fillMetaData(HANDLE fHandle, QFileSystemMetaData &data,
QFileSystemMetaData::MetaDataFlags what)
{
data.entryFlags &= ~what;
clearWinStatData(data);
BY_HANDLE_FILE_INFORMATION fileInfo;
UINT oldmode = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
if (GetFileInformationByHandle(fHandle , &fileInfo)) {
data.fillFromFindInfo(fileInfo);
}
SetErrorMode(oldmode);
return data.hasFlags(what);
}
//static
bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemMetaData &data,
QFileSystemMetaData::MetaDataFlags what)
{
what |= QFileSystemMetaData::WinLnkType | QFileSystemMetaData::WinStatFlags;
data.entryFlags &= ~what;
QFileSystemEntry fname;
data.knownFlagsMask |= QFileSystemMetaData::WinLnkType;
if(entry.filePath().endsWith(QLatin1String(".lnk"))) {
data.entryFlags |= QFileSystemMetaData::WinLnkType;
fname = QFileSystemEntry(readLink(entry));
} else {
fname = entry;
}
if (fname.isEmpty()) {
data.knownFlagsMask |= what;
clearWinStatData(data);
return false;
}
if (what & QFileSystemMetaData::WinStatFlags) {
UINT oldmode = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
clearWinStatData(data);
WIN32_FIND_DATA findData;
// The memory structure for WIN32_FIND_DATA is same as WIN32_FILE_ATTRIBUTE_DATA
// for all members used by fillFindData().
bool ok = ::GetFileAttributesEx((wchar_t*)fname.nativeFilePath().utf16(), GetFileExInfoStandard,
reinterpret_cast<WIN32_FILE_ATTRIBUTE_DATA *>(&findData));
if (ok) {
data.fillFromFindData(findData, false, fname.isDriveRoot());
} else {
if (!tryFindFallback(fname, data))
tryDriveUNCFallback(fname, data);
}
SetErrorMode(oldmode);
}
if (what & QFileSystemMetaData::Permissions)
fillPermissions(fname, data, what);
if ((what & QFileSystemMetaData::LinkType)
&& data.missingFlags(QFileSystemMetaData::LinkType)) {
data.knownFlagsMask |= QFileSystemMetaData::LinkType;
if (data.fileAttribute_ & FILE_ATTRIBUTE_REPARSE_POINT) {
WIN32_FIND_DATA findData;
if (getFindData(fname.nativeFilePath(), findData))
data.fillFromFindData(findData, true);
}
}
data.knownFlagsMask |= what;
return data.hasFlags(what);
}
static inline bool mkDir(const QString &path)
{
#if defined(Q_OS_WINCE)
// Unfortunately CreateDirectory returns true for paths longer than
// 256, but does not create a directory. It starts to fail, when
// path length > MAX_PATH, which is 260 usually on CE.
// This only happens on a Windows Mobile device. Windows CE seems
// not to be affected by this.
static int platformId = 0;
if (platformId == 0) {
wchar_t platformString[64];
if (SystemParametersInfo(SPI_GETPLATFORMTYPE, sizeof(platformString)/sizeof(*platformString),platformString,0)) {
if (0 == wcscmp(platformString, L"PocketPC") || 0 == wcscmp(platformString, L"Smartphone"))
platformId = 1;
else
platformId = 2;
}
}
if (platformId == 1 && QFSFileEnginePrivate::longFileName(path).size() > 256)
return false;
#endif
return ::CreateDirectory((wchar_t*)QFSFileEnginePrivate::longFileName(path).utf16(), 0);
}
static inline bool rmDir(const QString &path)
{
return ::RemoveDirectory((wchar_t*)QFSFileEnginePrivate::longFileName(path).utf16());
}
static bool isDirPath(const QString &dirPath, bool *existed)
{
QString path = dirPath;
if (path.length() == 2 && path.at(1) == QLatin1Char(':'))
path += QLatin1Char('\\');
DWORD fileAttrib = ::GetFileAttributes((wchar_t*)QFSFileEnginePrivate::longFileName(path).utf16());
if (fileAttrib == INVALID_FILE_ATTRIBUTES) {
int errorCode = GetLastError();
if (errorCode == ERROR_ACCESS_DENIED || errorCode == ERROR_SHARING_VIOLATION) {
WIN32_FIND_DATA findData;
if (getFindData(QFSFileEnginePrivate::longFileName(path), findData))
fileAttrib = findData.dwFileAttributes;
}
}
if (existed)
*existed = fileAttrib != INVALID_FILE_ATTRIBUTES;
if (fileAttrib == INVALID_FILE_ATTRIBUTES)
return false;
return fileAttrib & FILE_ATTRIBUTE_DIRECTORY;
}
//static
bool QFileSystemEngine::createDirectory(const QFileSystemEntry &entry, bool createParents)
{
QString dirName = entry.filePath();
if (createParents) {
dirName = QDir::toNativeSeparators(QDir::cleanPath(dirName));
// We spefically search for / so \ would break it..
int oldslash = -1;
if (dirName.startsWith(QLatin1String("\\\\"))) {
// Don't try to create the root path of a UNC path;
// CreateDirectory() will just return ERROR_INVALID_NAME.
for (int i = 0; i < dirName.size(); ++i) {
if (dirName.at(i) != QDir::separator()) {
oldslash = i;
break;
}
}
if (oldslash != -1)
oldslash = dirName.indexOf(QDir::separator(), oldslash);
}
for (int slash=0; slash != -1; oldslash = slash) {
slash = dirName.indexOf(QDir::separator(), oldslash+1);
if (slash == -1) {
if (oldslash == dirName.length())
break;
slash = dirName.length();
}
if (slash) {
QString chunk = dirName.left(slash);
bool existed = false;
if (!isDirPath(chunk, &existed)) {
if (!existed) {
if (!mkDir(chunk))
return false;
} else {
return false;
}
}
}
}
return true;
}
return mkDir(entry.filePath());
}
//static
bool QFileSystemEngine::removeDirectory(const QFileSystemEntry &entry, bool removeEmptyParents)
{
QString dirName = entry.filePath();
if (removeEmptyParents) {
dirName = QDir::toNativeSeparators(QDir::cleanPath(dirName));
for (int oldslash = 0, slash=dirName.length(); slash > 0; oldslash = slash) {
QString chunk = dirName.left(slash);
if (chunk.length() == 2 && chunk.at(0).isLetter() && chunk.at(1) == QLatin1Char(':'))
break;
if (!isDirPath(chunk, 0))
return false;
if (!rmDir(chunk))
return oldslash != 0;
slash = dirName.lastIndexOf(QDir::separator(), oldslash-1);
}
return true;
}
return rmDir(entry.filePath());
}
//static
QString QFileSystemEngine::rootPath()
{
#if defined(Q_OS_WINCE)
QString ret = QLatin1String("/");
#elif defined(Q_FS_FAT)
QString ret = QString::fromLatin1(qgetenv("SystemDrive").constData());
if (ret.isEmpty())
ret = QLatin1String("c:");
ret.append(QLatin1Char('/'));
#elif defined(Q_OS_OS2EMX)
char dir[4];
_abspath(dir, QLatin1String("/"), _MAX_PATH);
QString ret(dir);
#endif
return ret;
}
//static
QString QFileSystemEngine::homePath()
{
QString ret;
#if !defined(QT_NO_LIBRARY)
resolveLibs();
if (ptrGetUserProfileDirectoryW) {
HANDLE hnd = ::GetCurrentProcess();
HANDLE token = 0;
BOOL ok = ::OpenProcessToken(hnd, TOKEN_QUERY, &token);
if (ok) {
DWORD dwBufferSize = 0;
// First call, to determine size of the strings (with '\0').
ok = ptrGetUserProfileDirectoryW(token, NULL, &dwBufferSize);
if (!ok && dwBufferSize != 0) { // We got the required buffer size
wchar_t *userDirectory = new wchar_t[dwBufferSize];
// Second call, now we can fill the allocated buffer.
ok = ptrGetUserProfileDirectoryW(token, userDirectory, &dwBufferSize);
if (ok)
ret = QString::fromWCharArray(userDirectory);
delete [] userDirectory;
}
::CloseHandle(token);
}
}
#endif
if (ret.isEmpty() || !QFile::exists(ret)) {
ret = QString::fromLocal8Bit(qgetenv("USERPROFILE").constData());
if (ret.isEmpty() || !QFile::exists(ret)) {
ret = QString::fromLocal8Bit(qgetenv("HOMEDRIVE").constData())
+ QString::fromLocal8Bit(qgetenv("HOMEPATH").constData());
if (ret.isEmpty() || !QFile::exists(ret)) {
ret = QString::fromLocal8Bit(qgetenv("HOME").constData());
if (ret.isEmpty() || !QFile::exists(ret)) {
#if defined(Q_OS_WINCE)
ret = QLatin1String("\\My Documents");
if (!QFile::exists(ret))
#endif
ret = rootPath();
}
}
}
}
return QDir::fromNativeSeparators(ret);
}
QString QFileSystemEngine::tempPath()
{
QString ret;
wchar_t tempPath[MAX_PATH];
DWORD len = GetTempPath(MAX_PATH, tempPath);
if (len)
ret = QString::fromWCharArray(tempPath, len);
if (!ret.isEmpty()) {
while (ret.endsWith(QLatin1Char('\\')))
ret.chop(1);
ret = QDir::fromNativeSeparators(ret);
}
if (ret.isEmpty()) {
#if !defined(Q_OS_WINCE)
ret = QLatin1String("c:/tmp");
#else
ret = QLatin1String("/Temp");
#endif
}
return ret;
}
bool QFileSystemEngine::setCurrentPath(const QFileSystemEntry &entry)
{
QFileSystemMetaData meta;
fillMetaData(entry, meta, QFileSystemMetaData::ExistsAttribute | QFileSystemMetaData::DirectoryType);
if(!(meta.exists() && meta.isDirectory()))
return false;
#if !defined(Q_OS_WINCE)
//TODO: this should really be using nativeFilePath(), but that returns a path in long format \\?\c:\foo
//which causes many problems later on when it's returned through currentPath()
return ::SetCurrentDirectory(reinterpret_cast<const wchar_t*>(QDir::toNativeSeparators(entry.filePath()).utf16())) != 0;
#else
qfsPrivateCurrentDir = entry.filePath();
return true;
#endif
}
QFileSystemEntry QFileSystemEngine::currentPath()
{
QString ret;
#if !defined(Q_OS_WINCE)
DWORD size = 0;
wchar_t currentName[PATH_MAX];
size = ::GetCurrentDirectory(PATH_MAX, currentName);
if (size != 0) {
if (size > PATH_MAX) {
wchar_t *newCurrentName = new wchar_t[size];
if (::GetCurrentDirectory(PATH_MAX, newCurrentName) != 0)
ret = QString::fromWCharArray(newCurrentName, size);
delete [] newCurrentName;
} else {
ret = QString::fromWCharArray(currentName, size);
}
}
if (ret.length() >= 2 && ret[1] == QLatin1Char(':'))
ret[0] = ret.at(0).toUpper(); // Force uppercase drive letters.
#else
Q_UNUSED(fileName);
//TODO - a race condition exists when using currentPath / setCurrentPath from multiple threads
if (qfsPrivateCurrentDir.isEmpty())
qfsPrivateCurrentDir = QCoreApplication::applicationDirPath();
ret = qfsPrivateCurrentDir;
#endif
return QFileSystemEntry(ret, QFileSystemEntry::FromNativePath());
}
//static
bool QFileSystemEngine::createLink(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error)
{
Q_ASSERT(false);
Q_UNUSED(source)
Q_UNUSED(target)
Q_UNUSED(error)
return false; // TODO implement; - code needs to be moved from qfsfileengine_win.cpp
}
//static
bool QFileSystemEngine::copyFile(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error)
{
bool ret = ::CopyFile((wchar_t*)source.nativeFilePath().utf16(),
(wchar_t*)target.nativeFilePath().utf16(), true) != 0;
if(!ret)
error = QSystemError(::GetLastError(), QSystemError::NativeError);
return ret;
}
//static
bool QFileSystemEngine::renameFile(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error)
{
bool ret = ::MoveFile((wchar_t*)source.nativeFilePath().utf16(),
(wchar_t*)target.nativeFilePath().utf16()) != 0;
if(!ret)
error = QSystemError(::GetLastError(), QSystemError::NativeError);
return ret;
}
//static
bool QFileSystemEngine::removeFile(const QFileSystemEntry &entry, QSystemError &error)
{
bool ret = ::DeleteFile((wchar_t*)entry.nativeFilePath().utf16()) != 0;
if(!ret)
error = QSystemError(::GetLastError(), QSystemError::NativeError);
return ret;
}
//static
bool QFileSystemEngine::setPermissions(const QFileSystemEntry &entry, QFile::Permissions permissions, QSystemError &error,
QFileSystemMetaData *data)
{
Q_UNUSED(data);
int mode = 0;
if (permissions & QFile::ReadOwner || permissions & QFile::ReadUser
|| permissions & QFile::ReadGroup || permissions & QFile::ReadOther)
mode |= _S_IREAD;
if (permissions & QFile::WriteOwner || permissions & QFile::WriteUser
|| permissions & QFile::WriteGroup || permissions & QFile::WriteOther)
mode |= _S_IWRITE;
if (mode == 0) // not supported
return false;
bool ret = (::_wchmod((wchar_t*)entry.nativeFilePath().utf16(), mode) == 0);
if(!ret)
error = QSystemError(errno, QSystemError::StandardLibraryError);
return ret;
}
static inline QDateTime fileTimeToQDateTime(const FILETIME *time)
{
QDateTime ret;
#if defined(Q_OS_WINCE)
SYSTEMTIME systime;
FILETIME ftime;
systime.wYear = 1970;
systime.wMonth = 1;
systime.wDay = 1;
systime.wHour = 0;
systime.wMinute = 0;
systime.wSecond = 0;
systime.wMilliseconds = 0;
systime.wDayOfWeek = 4;
SystemTimeToFileTime(&systime, &ftime);
unsigned __int64 acttime = (unsigned __int64)time->dwHighDateTime << 32 | time->dwLowDateTime;
FileTimeToSystemTime(time, &systime);
unsigned __int64 time1970 = (unsigned __int64)ftime.dwHighDateTime << 32 | ftime.dwLowDateTime;
unsigned __int64 difftime = acttime - time1970;
difftime /= 10000000;
ret.setTime_t((unsigned int)difftime);
#else
SYSTEMTIME sTime, lTime;
FileTimeToSystemTime(time, &sTime);
SystemTimeToTzSpecificLocalTime(0, &sTime, &lTime);
ret.setDate(QDate(lTime.wYear, lTime.wMonth, lTime.wDay));
ret.setTime(QTime(lTime.wHour, lTime.wMinute, lTime.wSecond, lTime.wMilliseconds));
#endif
return ret;
}
QDateTime QFileSystemMetaData::creationTime() const
{
return fileTimeToQDateTime(&creationTime_);
}
QDateTime QFileSystemMetaData::modificationTime() const
{
return fileTimeToQDateTime(&lastWriteTime_);
}
QDateTime QFileSystemMetaData::accessTime() const
{
return fileTimeToQDateTime(&lastAccessTime_);
}
QT_END_NAMESPACE