Question

我有一个问题，我希望有人可以提供帮助。我有一个c＃应用程序需要从驻留在Linux服务器上的文件中获取文件所有者信息。 .Net System.IO GetFileInfo抛出异常，WMI调用失败。我知道有PInvoke方法GetFileOwner但是pinvoke.net上的示例不完整且无法编译。有没有人有一个很好的完整示例或链接来查找此信息？

这是一个.Net c＃3.5 windows应用程序，并且有权访问该文件，但我希望在完成剩余的处理之前获取所有者信息。

由于

Answer 1

以下是我使用的代码示例。它适用于我的应用程序和我的环境。应该在别人身上工作。对不起，这个没有尽快发布，是StackOverFlow的新手。我希望这个帖子能够正确发布。

public class GetUserInfo{
private const int NAME_SIZE = 0x40;

// Methods
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
private static extern bool ConvertSidToStringSid(IntPtr Sid, ref IntPtr StringSid);
public string ConvertSidToStringSidNT(IntPtr Sid)
{
    string ans = string.Empty;
    if (IsValidSid(Sid))
    {
        ans = "S-1-";
        SID_IDENTIFIER_AUTHORITY psia = (SID_IDENTIFIER_AUTHORITY) Marshal.PtrToStructure(GetSidIdentifierAuthority(Sid), typeof(SID_IDENTIFIER_AUTHORITY));
        int num = Marshal.ReadInt16(GetSidSubAuthorityCount(Sid));
        if ((psia.Value[0] != 0) & (psia.Value[1] != 0))
        {
            ans = ((ans + Conversion.Hex(psia.Value[0]) + Conversion.Hex(psia.Value[1]).PadLeft(2, '0')) + Conversion.Hex(psia.Value[2]).PadLeft(2, '0') + Conversion.Hex(psia.Value[3]).PadLeft(2, '0')) + Conversion.Hex(psia.Value[4]).PadLeft(2, '0') + Conversion.Hex(psia.Value[5]).PadLeft(2, '0');
        }
        else
        {
            long top = psia.Value[5];
            top += psia.Value[4] * 0x100;
            top += (psia.Value[3] * 0x100) * 0x100;
            ans = ans + ((top + (((psia.Value[2] * 0x100) * 0x100) * 0x100))).ToString();
        }
        int VB$t_i4$L0 = num - 1;
        for (int i = 0; i <= VB$t_i4$L0; i++)
        {
            ans = ans + "-" + Marshal.ReadInt32(GetSidSubAuthority(Sid, i)).ToString();
        }
    }
    return ans;
}

public string GetFileOwner(string Path)
{
    string MachineName;
    IntPtr OwnerSid;
    int peUse;
    IntPtr SD;
    string UserName;
    IntPtr VB$t_struct$N0;
    SE_OBJECT_TYPE ObjectType = SE_OBJECT_TYPE.SE_FILE_OBJECT;
    if (GetNamedSecurityInfo(ref Path, ObjectType, SECURITY_INFORMATION.OWNER_SECURITY_INFORMATION, ref OwnerSid, ref VB$t_struct$N0, ref VB$t_struct$N0, ref VB$t_struct$N0, ref SD) != 0)
    {
        return "Error";
    }
    Marshal.FreeHGlobal(SD);
    if (Path.StartsWith(@"\\"))
    {
        MachineName = Path.Split(new char[] { '\\' })[2];
    }
    else
    {
        MachineName = "";
    }
    int name_len = 0x40;
    int domain_len = 0x40;
    string name = Strings.Space(name_len);
    string domain_name = Strings.Space(domain_len);
    if (!LookupAccountSid(ref MachineName, OwnerSid, ref name, ref name_len, ref domain_name, ref domain_len, ref peUse))
    {
        string SidString;
        if (Marshal.GetLastWin32Error() != 0x534)
        {
            return "Error";
        }
        if (Environment.Version.Major == 4)
        {
            SidString = this.ConvertSidToStringSidNT(OwnerSid);
        }
        else
        {
            IntPtr StringPtr;
            if (!ConvertSidToStringSid(OwnerSid, ref StringPtr))
            {
                return "Error";
            }
            SidString = Marshal.PtrToStringAuto(StringPtr);
            Marshal.FreeHGlobal(StringPtr);
        }
        domain_len = 0;
        name = SidString;
        name_len = Strings.Len(name);
    }
    if (domain_len > 0)
    {
        UserName = Strings.Left(name, name_len);
    }
    else
    {
        UserName = Strings.Left(name, name_len);
    }
    return UserName;
}

[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
private static extern int GetNamedSecurityInfo([MarshalAs(UnmanagedType.VBByRefStr)] ref string pObjectName, SE_OBJECT_TYPE ObjectType, SECURITY_INFORMATION SecurityInfo, ref IntPtr ppsidOwner, ref IntPtr ppsidGroup, ref IntPtr ppDacl, ref IntPtr ppSacl, ref IntPtr ppSecurityDescriptor);
[DllImport("advapi32.dll", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)]
private static extern IntPtr GetSidIdentifierAuthority(IntPtr pSid);
[DllImport("advapi32.dll", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)]
private static extern IntPtr GetSidSubAuthority(IntPtr pSid, int nSubAuthority);
[DllImport("advapi32.dll", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)]
private static extern IntPtr GetSidSubAuthorityCount(IntPtr pSid);
[DllImport("advapi32.dll", CharSet=CharSet.Ansi, SetLastError=true, ExactSpelling=true)]
private static extern bool IsValidSid(IntPtr pSid);
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
private static extern bool LookupAccountSid([MarshalAs(UnmanagedType.VBByRefStr)] ref string lpSystemName, IntPtr lpSid, [MarshalAs(UnmanagedType.VBByRefStr)] ref string lpName, ref int cchName, [MarshalAs(UnmanagedType.VBByRefStr)] ref string lpReferenceDomainName, ref int cchReferencedDomainName, ref int peUse);

// Nested Types
private enum SE_OBJECT_TYPE
{
    SE_UNKNOWN_OBJECT_TYPE,
    SE_FILE_OBJECT,
    SE_SERVICE,
    SE_PRINTER,
    SE_REGISTRY_KEY,
    SE_LMSHARE,
    SE_KERNEL_OBJECT,
    SE_WINDOW_OBJECT,
    SE_DS_OBJECT,
    SE_DS_OBJECT_ALL,
    SE_PROVIDER_DEFINED_OBJECT,
    SE_WMIGUID_OBJECT,
    SE_REGISTRY_WOW64_32
}

private enum SECURITY_INFORMATION
{
    DACL_SECURITY_INFORMATION = 4,
    GROUP_SECURITY_INFORMATION = 2,
    OWNER_SECURITY_INFORMATION = 1,
    PROTECTED_DACL_SECURITY_INFORMATION = 0x20,
    PROTECTED_SACL_SECURITY_INFORMATION = 0x10,
    SACL_SECURITY_INFORMATION = 8,
    UNPROTECTED_DACL_SECURITY_INFORMATION = 0x80,
    UNPROTECTED_SACL_SECURITY_INFORMATION = 0x40
}

[StructLayout(LayoutKind.Sequential)]
private struct SID_IDENTIFIER_AUTHORITY
{
    [MarshalAs(UnmanagedType.ByValArray, SizeConst=6)]
    public byte[] Value;
} }

C＃从Linux文件获取文件所有者

1 个答案: