DSInternals/Src/DSInternals.Common/ADSI/AdsiObjectAdapter.cs

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namespace DSInternals.Common.ADSI
{
using DSInternals.Common.Data;
using System;
using System.DirectoryServices;
using System.Linq;
using System.Security.Principal;
public class AdsiObjectAdapter : DirectoryObject
{
private const char DBWithBinarySeparator = ':';
protected SearchResult directoryEntry;
public AdsiObjectAdapter(SearchResult directoryEntry)
{
Validator.AssertNotNull(directoryEntry, "directoryEntry");
this.directoryEntry = directoryEntry;
}
public override string DistinguishedName
{
get
{
return this.ReadAttributeSingle<string>(CommonDirectoryAttributes.DN);
}
}
public override Guid Guid
{
get
{
Guid? guid;
this.ReadAttribute(CommonDirectoryAttributes.ObjectGUID, out guid);
return guid.Value;
}
}
public override SecurityIdentifier Sid
{
get
{
SecurityIdentifier sid;
this.ReadAttribute(CommonDirectoryAttributes.ObjectSid, out sid);
return sid;
}
}
protected override bool HasBigEndianRid
{
get
{
return false;
}
}
public override bool HasAttribute(string name)
{
return this.directoryEntry.Properties.Contains(name);
}
public override void ReadAttribute(string name, out byte[] value)
{
value = this.ReadAttributeSingle<byte[]>(name);
}
public override void ReadAttribute(string name, out byte[][] value)
{
value = this.ReadAttributeMulti<byte[]>(name);
}
public override void ReadAttribute(string name, out int? value)
{
value = this.ReadAttributeSingle<int?>(name);
}
public override void ReadAttribute(string name, out long? value)
{
value = this.ReadAttributeSingle<long?>(name);
}
public override void ReadAttribute(string name, out string value)
{
value = this.ReadAttributeSingle<string>(name);
}
public override void ReadAttribute(string name, out string[] values)
{
values = this.ReadAttributeMulti<string>(name);
}
public override void ReadAttribute(string name, out DistinguishedName value)
{
string dnString = this.ReadAttributeSingle<string>(name);
value = new DistinguishedName(dnString);
}
public override void ReadLinkedValues(string attributeName, out byte[][] values)
{
// Parse the DN with binary value
string[] textValues = this.ReadAttributeMulti<string>(attributeName);
values = textValues.Select(textValue => textValue.Split(DBWithBinarySeparator)[2].HexToBinary()).ToArray();
}
protected TResult ReadAttributeSingle<TResult>(string name)
{
return this.directoryEntry.Properties[name].Cast<TResult>().FirstOrDefault();
}
protected TResult[] ReadAttributeMulti<TResult>(string name)
{
var result = this.directoryEntry.Properties[name].Cast<TResult>().ToArray();
if(result != null && result.Length == 0)
{
// We do not want to return an empty array.
result = null;
}
return result;
}
}
}