qfileinfo_win.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

	    psl->Release();
	}
    } );

    return fileLinked;
#else
    return QString();
#endif // QT_NO_COMPONENT
}

Q_EXPORT int qt_ntfs_permission_lookup = 1;

QString QFileInfo::owner() const
{
    if ( ( qt_ntfs_permission_lookup > 0 ) && ( qWinVersion() == Qt::WV_2000 || qWinVersion() == Qt::WV_XP ) ) {
	PSID pOwner = 0;
	PSECURITY_DESCRIPTOR pSD;
	QString name;
	resolveLibs();
	if ( ptrGetNamedSecurityInfoW && ptrLookupAccountSidW ) {
	    if ( ptrGetNamedSecurityInfoW( (wchar_t*)fn.ucs2(), SE_FILE_OBJECT, OWNER_SECURITY_INFORMATION, &pOwner, NULL, NULL, NULL, &pSD ) == ERROR_SUCCESS ) {
		DWORD lowner = 0, ldomain = 0;
		SID_NAME_USE use;
		// First call, to determine size of the strings (with '\0').
		ptrLookupAccountSidW( NULL, pOwner, NULL, &lowner, NULL, &ldomain, &use );
		TCHAR *owner = new TCHAR[lowner];
		TCHAR *domain = new TCHAR[ldomain];
		// Second call, size is without '\0'
		if ( ptrLookupAccountSidW( NULL, pOwner, (LPWSTR)owner, &lowner, (LPWSTR)domain, &ldomain, &use ) ) {
		    name = qt_winQString(owner);
		}
		LocalFree( pSD );
		delete [] owner;
		delete [] domain;
	    }
	}
	return name;
    } else
	return QString::null;
}

static const uint nobodyID = (uint) -2;

uint QFileInfo::ownerId() const
{
    return nobodyID;
}

QString QFileInfo::group() const
{
    if ( ( qt_ntfs_permission_lookup > 0 ) && ( qWinVersion() == Qt::WV_2000 || qWinVersion() == Qt::WV_XP ) ) {
	PSID pGroup = 0;
	PSECURITY_DESCRIPTOR pSD;
	QString name;
	resolveLibs();

	if ( ptrGetNamedSecurityInfoW && ptrLookupAccountSidW ) {
	    if ( ptrGetNamedSecurityInfoW( (wchar_t*)fn.ucs2(), SE_FILE_OBJECT, GROUP_SECURITY_INFORMATION, NULL, &pGroup, NULL, NULL, &pSD ) == ERROR_SUCCESS ) {
		DWORD lgroup = 0, ldomain = 0;
		SID_NAME_USE use;
		// First call, to determine size of the strings (with '\0').
		ptrLookupAccountSidW( NULL, pGroup, NULL, &lgroup, NULL, &ldomain, &use );
		TCHAR *group = new TCHAR[lgroup];
		TCHAR *domain = new TCHAR[ldomain];
		// Second call, size is without '\0'
		if ( ptrLookupAccountSidW( NULL, pGroup, (LPWSTR)group, &lgroup, (LPWSTR)domain, &ldomain, &use ) ) {
		    name = qt_winQString(group);
		}
		LocalFree( pSD );
		delete [] group;
		delete [] domain;
	    }
	}
	return name;
    } else
	return QString::null;
}

uint QFileInfo::groupId() const
{
    return nobodyID;
}

bool QFileInfo::permission( int p ) const
{
    if ( ( qt_ntfs_permission_lookup > 0 ) && ( qWinVersion() == Qt::WV_2000 || qWinVersion() == Qt::WV_XP ) ) {
	PSID pOwner = 0;
	PSID pGroup = 0;
	PACL pDacl;
	PSECURITY_DESCRIPTOR pSD;
	ACCESS_MASK access_mask;

	enum { ReadMask = 0x00000001, WriteMask = 0x00000002, ExecMask = 0x00000020 };
	resolveLibs();

	if ( ptrGetNamedSecurityInfoW && ptrAllocateAndInitializeSid && ptrBuildTrusteeWithSidW && ptrGetEffectiveRightsFromAclW && ptrFreeSid ) {
	    DWORD res = ptrGetNamedSecurityInfoW( (wchar_t*)fn.ucs2(), SE_FILE_OBJECT,
		OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION,
		&pOwner, &pGroup, &pDacl, 0, &pSD );

	    if ( res == ERROR_SUCCESS ) {
		TRUSTEE_W trustee;
		if ( p & ( ReadUser | WriteUser | ExeUser) ) {
		    if ( ptrGetEffectiveRightsFromAclW( pDacl, &currentUserTrusteeW, &access_mask ) != ERROR_SUCCESS )
			access_mask = (ACCESS_MASK)-1;
		    if ( ( p & ReadUser ) && !( access_mask & ReadMask )   ||
			( p & WriteUser ) && !( access_mask & WriteMask ) ||
			( p & ExeUser ) && !( access_mask & ExecMask )      ) {
			LocalFree( pSD );
			return FALSE;
		    }
		}
		if ( p & ( ReadOwner | WriteOwner | ExeOwner) ) {
		    ptrBuildTrusteeWithSidW( &trustee, pOwner );
		    if ( ptrGetEffectiveRightsFromAclW( pDacl, &trustee, &access_mask ) != ERROR_SUCCESS )
			access_mask = (ACCESS_MASK)-1;
		    if ( ( p & ReadOwner ) && !( access_mask & ReadMask )   ||
			( p & WriteOwner ) && !( access_mask & WriteMask ) ||
			( p & ExeOwner ) && !( access_mask & ExecMask )      ) {
			LocalFree( pSD );
			return FALSE;
		    }
		}
		if ( p & ( ReadGroup | WriteGroup | ExeGroup) ) {
		    ptrBuildTrusteeWithSidW( &trustee, pGroup );
		    if ( ptrGetEffectiveRightsFromAclW( pDacl, &trustee, &access_mask ) != ERROR_SUCCESS )
			access_mask = (ACCESS_MASK)-1;
		    if ( ( p & ReadGroup ) && !( access_mask & ReadMask )   ||
			( p & WriteGroup ) && !( access_mask & WriteMask ) ||
			( p & ExeGroup ) && !( access_mask & ExecMask )      ) {
			LocalFree( pSD );
			return FALSE;
		    }
		}
		if ( p & ( ReadOther | WriteOther | ExeOther) ) {
		    // Create SID 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( &trustee, pWorld );
			if ( ptrGetEffectiveRightsFromAclW( pDacl, &trustee, &access_mask ) != ERROR_SUCCESS )
			    access_mask = (ACCESS_MASK)-1; // ###
			if ( ( p & ReadOther ) && !( access_mask & ReadMask )   ||
			    ( p & WriteOther ) && !( access_mask & WriteMask ) ||
			    ( p & ExeOther ) && !( access_mask & ExecMask )      ) {
			    LocalFree( pSD );
			    return FALSE;
			}
		    }
		    ptrFreeSid( pWorld );
		}
		LocalFree( pSD );
	    }
	}
    }
    // just check if it's ReadOnly

    QT_WA( {
	if ( p & ( WriteOwner | WriteUser | WriteGroup | WriteOther ) ) {
	    DWORD attr = GetFileAttributes( (TCHAR*)fn.ucs2() );
	    if ( attr & FILE_ATTRIBUTE_READONLY )
		return FALSE;
	}
    } , {
	if ( p & ( WriteOwner | WriteUser | WriteGroup | WriteOther ) ) {
	    DWORD attr = GetFileAttributesA( fn.local8Bit() );
	    if ( attr & FILE_ATTRIBUTE_READONLY )
		return FALSE;
	}
    } );

    return TRUE;
}

void QFileInfo::doStat() const
{
    if ( fn.isEmpty() )
	return;

    UINT oldmode = SetErrorMode(SEM_FAILCRITICALERRORS);
    QFileInfo *that = ((QFileInfo*)this);	// mutable function
    if ( !that->fic )
	that->fic = new QFileInfoCache;
    QT_STATBUF *b = &that->fic->st;

    int r;
    QT_WA( {
	r = QT_TSTAT((TCHAR*)fn.ucs2(), (QT_STATBUF4TSTAT*)b);
    } , {
	r = QT_STAT(qt_win95Name(fn), b);
    } );
    if ( r!=0 ) {
	bool is_dir=FALSE;
	if ( fn[0] == '/' && fn[1] == '/'
	  || fn[0] == '\\' && fn[1] == '\\' )
	{
	    // UNC - stat doesn't work for all cases (Windows bug)
	    int s = fn.find(fn[0],2);
	    if ( s > 0 ) {
		// "\\server\..."
		s = fn.find(fn[0],s+1);
		if ( s > 0 ) {
		    // "\\server\share\..."
		    if ( fn[s+1] ) {
			// "\\server\share\notfound"
		    } else {
			// "\\server\share\"
			is_dir=TRUE;
		    }
		} else {
		    // "\\server\share"
		    is_dir=TRUE;
		}
	    } else {
		// "\\server"
		is_dir=TRUE;
	    }
	}
	if ( is_dir ) {
	    // looks like a UNC dir, is a dir.
	    memset(b,0,sizeof(*b));
	    b->st_mode = QT_STAT_DIR;
	    b->st_nlink = 1;
	    r = 0;
	}
    }

    if ( r != 0 ) {
	delete that->fic;
	that->fic = 0;
    }

    SetErrorMode(oldmode);
}

QString QFileInfo::dirPath( bool absPath ) const
{
    QString s;
    if ( absPath )
	s = absFilePath();
    else
	s = fn;
    int pos = s.findRev( '/' );
    if ( pos == -1 ) {
	if ( s[ 2 ] == '/' )
	    return s.left( 3 );
	if ( s[ 1 ] == ':' ) {
	    if ( absPath )
		return s.left( 2 ) + "/";
	    return s.left( 2 );
	}
	return QString::fromLatin1(".");
    } else {
	if ( pos == 0 )
	    return QString::fromLatin1( "/" );
	if ( pos == 2 && s[ 1 ] == ':'  && s[ 2 ] == '/')
	    pos++;
	return s.left( pos );
    }
}

QString QFileInfo::fileName() const
{
    int p = fn.findRev( '/' );
    if ( p == -1 ) {
	int p = fn.findRev( ':' );
	if ( p != -1 )
	    return fn.mid( p + 1 );
	return fn;
    } else {
	return fn.mid( p + 1 );
    }
}

/*!
    Returns TRUE if the file is hidden; otherwise returns FALSE.

    On Unix-like operating systems, including Mac OS X, a file is
    hidden if its name begins with ".". On Windows a file is hidden if
    its hidden attribute is set.
*/
bool QFileInfo::isHidden() const
{
    QT_WA( {
	return GetFileAttributesW( (TCHAR*)fn.ucs2() ) & FILE_ATTRIBUTE_HIDDEN;
    } , {
    return GetFileAttributesA( fn.local8Bit() ) & FILE_ATTRIBUTE_HIDDEN;
    } );
}