如何在Windows上获取和修改用户组的其他权利

Question

我正在尝试更改.NET Core中文件的权限。但是，FileInfo似乎不再有任何SetAccessControl。

// Create a new FileInfo object.
FileInfo fInfo = new FileInfo(FileName);

// Get a FileSecurity object that represents the 
// current security settings.
FileSecurity fSecurity = fInfo.GetAccessControl();

// Add the FileSystemAccessRule to the security settings. 
fSecurity.AddAccessRule(new FileSystemAccessRule(Account,
                                                Rights,
                                                ControlType));

// Set the new access settings.
fInfo.SetAccessControl(fSecurity);

目标只是将执行权添加到文件的当前所有者（不是Windows或Unix特定功能）。

有关如何在.NET Core上执行此操作的任何线索？

Answer 1

item.name类现在是.NET Core的System.IO.FileSystem.AccessControl包的一部分。不再使用FileSecurity方法，因此您需要自己实例化File.GetAccessControl实例。

Answer 2

目前，有两种扩展方法：GetAccessControl和SetAccessControl，分别用于FileInfo，DirectoryInfo等。

因此您可以使用var ac = new FileInfo(path).GetAccessControl()，此表达式在.NET Framework和.Net Core中均有效。但是您仍然需要dotnet add package System.IO.FileSystem.AccessControl。

File.GetAccessControl在.NET Core中不可用。

ref：https://docs.microsoft.com/dotnet/api/system.io.filesystemaclextensions.getaccesscontrol

Answer 3

如何在Windows上获取和修改用户组的其他权利

我终于实现了Windows文件权限访问：

1。获取文件安全性：

      var security = new FileSecurity(fileSystemInfoFullName, 
                AccessControlSections.Owner | 
                AccessControlSections.Group |
                AccessControlSections.Access);

2。获取授权规则：

var authorizationRules = security.GetAccessRules(true, true, typeof(NTAccount));

3。获取所有者的授权规则：

var owner = security.GetOwner(typeof(NTAccount));
foreach (AuthorizationRule rule in authorizationRules)
{
    FileSystemAccessRule fileRule = rule as FileSystemAccessRule;
    if (fileRule != null)
    {
        if (owner != null && fileRule.IdentityReference == owner)
        {
             if (fileRule.FileSystemRights.HasFlag(FileSystemRights.ExecuteFile) ||
                fileRule.FileSystemRights.HasFlag(FileSystemRights.ReadAndExecute) ||
                fileRule.FileSystemRights.HasFlag(FileSystemRights.FullControl))
            {
                ownerRights.IsExecutable = true;
            }
        }
        else if (group != null && fileRule.IdentityReference == group)
        {
            // TO BE CONTINUED...
        }
    }
}

4。为所有者添加规则：

security.ModifyAccessRule(AccessControlModification.Add,
    new FileSystemAccessRule(owner, FileSystemRights.Modify, AccessControlType.Allow),
    out bool modified);

5。奖金

如何获取group和others，或者...我对等价物的定义？

var group = security.GetGroup(typeof(NTAccount));

var others = new SecurityIdentifier(WellKnownSidType.BuiltinUsersSid, null)
                 .Translate(typeof(NTAccount));

注意：此代码来自我的开源项目Lx.Shell

Answer 4

这是添加到其他答案中。请注意，GetAccessControl中的SetAccessControl和System.IO.FileSystem.AccessControl与其他.NET Core System.IO API一样，不不支持长文件名（255个字符）。

您收到的异常是内部调用引发的ArgumentException，参数是name。

如果您正在使用该软件包，则可能会发现文件名太长而需要添加：

if (usingFile.FullName.Length > 255)
{
    usingFile = new FileInfo(@"\\?\" + file.FullName);
}

或

if (folder.FullName.Length > 255)
{
    folder = new DirectoryInfo(@"\\?\" + folder.FullName);
}

Answer 5

文档说此功能受支持并且对我有用。 https://docs.microsoft.com/en-us/dotnet/api/system.io.filesystemaclextensions?view=dotnet-plat-ext-3.1是否具有SetAccessControl方法

请确保添加System.IO.FileSystem.AccessControl NuGet程序包。

这是我在.NET Framework中所拥有的：

var ds = new DirectorySecurity();
ds.AddAccessRule(new FileSystemAccessRule(adminSI, FileSystemRights.FullControl, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow));
ds.SetAccessRuleProtection(true, false); // disable inheritance and clear any inherited permissions

Directory.SetAccessControl(<path to directory>, ds);

这是.NET Core 3.1中的工作方式。只有最后一行不同：

var ds = new DirectorySecurity();
ds.AddAccessRule(new FileSystemAccessRule(adminSI, FileSystemRights.FullControl, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow));
ds.SetAccessRuleProtection(true, false); // disable inheritance and clear any inherited permissions

System.IO.FileSystemAclExtensions.SetAccessControl(new DirectoryInfo(<path to directory>), ds);

Answer 6

处理目录或文件ACL的另一种方法：

       // Adds an ACL entry on the specified directory for the specified account.
    public static void AddDirectorySecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
    {
        // Create a new DirectoryInfo object.
        DirectoryInfo dInfo = new DirectoryInfo(FileName);

        // Get a DirectorySecurity object that represents the 
        // current security settings.
        DirectorySecurity dSecurity = dInfo.GetAccessControl();

        // Add the FileSystemAccessRule to the security settings. 
        dSecurity.AddAccessRule(new FileSystemAccessRule(Account,
                                                        Rights,
                                                        ControlType));

        // Set the new access settings.
        dInfo.SetAccessControl(dSecurity);
    }

    // Removes an ACL entry on the specified directory for the specified account.
    public static void RemoveDirectorySecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
    {
        // Create a new DirectoryInfo object.
        DirectoryInfo dInfo = new DirectoryInfo(FileName);

        // Get a DirectorySecurity object that represents the 
        // current security settings.
        DirectorySecurity dSecurity = dInfo.GetAccessControl();

        // Add the FileSystemAccessRule to the security settings. 
        dSecurity.RemoveAccessRule(new FileSystemAccessRule(Account,
                                                        Rights,
                                                        ControlType));

        // Set the new access settings.
        dInfo.SetAccessControl(dSecurity);
    }

    // Adds an ACL entry on the specified file for the specified account.
    public static void AddFileSecurity(string fileName, string account,
        FileSystemRights rights, AccessControlType controlType)
    {

        // Create a new FileInfo object.
        FileInfo fInfo = new FileInfo(fileName);

        // Get a FileSecurity object that represents the 
        // current security settings.
        FileSecurity fSecurity = fInfo.GetAccessControl();

        // Add the FileSystemAccessRule to the security settings.
        fSecurity.AddAccessRule(new FileSystemAccessRule(account,
            rights, controlType));

        // Set the new access settings.
        fInfo.SetAccessControl(fSecurity);
    }

    // Removes an ACL entry on the specified file for the specified account.
    public static void RemoveFileSecurity(string fileName, string account,
        FileSystemRights rights, AccessControlType controlType)
    {

        // Create a new FileInfo object.
        FileInfo fInfo = new FileInfo(fileName);

        // Get a FileSecurity object that represents the 
        // current security settings.
        FileSecurity fSecurity = fInfo.GetAccessControl();

        // Remove the FileSystemAccessRule from the security settings.
        fSecurity.RemoveAccessRule(new FileSystemAccessRule(account,
            rights, controlType));

        // Set the new access settings.
        fInfo.SetAccessControl(fSecurity);
    }

    //example for open onClick folderdialog and get owner by NTACCOUNT of folder from acl
    private async void Button_Click(object sender, RoutedEventArgs e)
    {
        var folderPicker = new Windows.Storage.Pickers.FolderPicker();
        folderPicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.Desktop;
        folderPicker.FileTypeFilter.Add("*");

        Windows.Storage.StorageFolder folder = await folderPicker.PickSingleFolderAsync();
        if (folder != null)
        {
            // Application now has read/write access to all contents in the picked folder
            // (including other sub-folder contents)
            Windows.Storage.AccessCache.StorageApplicationPermissions.
            FutureAccessList.AddOrReplace("PickedFolderToken", folder);

            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(folder.ToString());

            // Get a FileSecurity object that represents the 
            // current security settings.
            FileSecurity fSecurity = fInfo.GetAccessControl();

            IdentityReference identityReference = fSecurity.GetOwner(typeof(SecurityIdentifier));
            NTAccount ntAccount = identityReference.Translate(typeof(NTAccount)) as NTAccount;
            var fileOwner = ntAccount.Value;


            //do something with file Owner
            //this.tb1.Text = "folder: " + folder.Name + " in Pfad: " + folder.Path + "owned by: " + fileOwner;
        }
        else
        {
            //error Handler
        }

    }

如何在.NET Core中修改文件访问控制

6 个答案:

如何在Windows上获取和修改用户组的其他权利