SharePoint使用 C# 擷取目前使用者的SID

C# 擷取目前使用者的SID  

2013-08-21 17:16:51|  分類： C# |  标簽：c#   |舉報 |字号 訂閱

1.簡單點的：

System.Security.Principal.WindowsIdentity currentUser = System.Security.Principal.WindowsIdentity.GetCurrent();

string sid = currentUser.User.ToString();

2.複雜點的：

private string GetSid(string strLogin)

{

    string str = "";

    // Parse the string to check if domain name is present.

    int idx = strLogin.IndexOf('\\');

    if (idx == -1)

    {

        idx = strLogin.IndexOf('@');

    }

    string strDomain;

    string strName;

    if (idx != -1)

    {

        strDomain = strLogin.Substring(0, idx);

        strName = strLogin.Substring(idx + 1);

    }

    else

    {

        strDomain = Environment.MachineName;

        strName = strLogin;

    }

    DirectoryEntry obDirEntry = null;

    try

    {

        Int64 iBigVal = 5;

        Byte[] bigArr = BitConverter.GetBytes(iBigVal);

        obDirEntry = new DirectoryEntry("WinNT://" +

                                strDomain + "/" + strName);

        System.DirectoryServices.PropertyCollection

                            coll = obDirEntry.Properties;

        object obVal = coll["objectSid"].Value;

        if (null != obVal)

        {

            str = this.ConvertByteToStringSid((Byte[])obVal);

        }

    }

    catch (Exception ex)

    {

        str = "";

        System.Diagnostics.Trace.Write(ex.Message);

    }

    return str;

}

private string ConvertByteToStringSid(Byte[] sidBytes)

{

    StringBuilder strSid = new StringBuilder();

    strSid.Append("S-");

    try

    {

        // Add SID revision.

        strSid.Append(sidBytes[0].ToString());

        // Next six bytes are SID authority value.

        if (sidBytes[6] != 0 || sidBytes[5] != 0)

        {

            string strAuth = String.Format

                ("0x{0:2x}{1:2x}{2:2x}{3:2x}{4:2x}{5:2x}",

                (Int16)sidBytes[1],

                (Int16)sidBytes[2],

                (Int16)sidBytes[3],

                (Int16)sidBytes[4],

                (Int16)sidBytes[5],

                (Int16)sidBytes[6]);

            strSid.Append("-");

            strSid.Append(strAuth);

        }

        else

        {

            Int64 iVal = (Int32)(sidBytes[1]) +

                (Int32)(sidBytes[2] << 8) +

                (Int32)(sidBytes[3] << 16) +

                (Int32)(sidBytes[4] << 24);

            strSid.Append("-");

            strSid.Append(iVal.ToString());

        }

        // Get sub authority count...

        int iSubCount = Convert.ToInt32(sidBytes[7]);

        int idxAuth = 0;

        for (int i = 0; i < iSubCount; i++)

        {

            idxAuth = 8 + i * 4;

            UInt32 iSubAuth = BitConverter.ToUInt32(sidBytes, idxAuth);

            strSid.Append("-");

            strSid.Append(iSubAuth.ToString());

        }

    }

    catch (Exception ex)

    {

        System.Diagnostics.Trace.Write(ex.Message);

        return "";

    }

    return strSid.ToString();

}

這段是參考：

http://www.netomatix.com/GetUserSid.aspx

http://www.codeproject.com/Articles/3688/How-to-get-user-SID-using-DirectoryServices-classe

要添加引用程式集: System.DirectoryServices（在 system.directoryservices.dll 中），本人用的方法1，方法2沒去驗證正确性