148 lines
4.5 KiB
C#
148 lines
4.5 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2021
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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using System.Globalization;
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using System.Text;
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using ASC.ActiveDirectory.Base;
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using ASC.ActiveDirectory.Base.Data;
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using ASC.ActiveDirectory.Novell.Data;
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using ASC.Common;
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using ASC.Common.Logging;
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using Microsoft.Extensions.Options;
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using Novell.Directory.Ldap;
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namespace ASC.ActiveDirectory.Novell.Extensions
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{
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[Singletone]
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public class NovellLdapEntryExtension
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{
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private readonly IOptionsMonitor<ILog> _options;
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public NovellLdapEntryExtension(IOptionsMonitor<ILog> option)
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{
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_options = option;
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}
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public object GetAttributeValue(LdapEntry ldapEntry, string attributeName, bool getBytes = false)
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{
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var attribute = ldapEntry.GetAttribute(attributeName);
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if (attribute == null)
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return null;
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if (!(string.Equals(attributeName, LdapConstants.ADSchemaAttributes.OBJECT_SID,
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StringComparison.OrdinalIgnoreCase) || getBytes))
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{
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return attribute.StringValue;
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}
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if (attribute.ByteValue == null)
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return null;
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var value = new byte[attribute.ByteValue.Length];
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Buffer.BlockCopy(attribute.ByteValue, 0, value, 0, attribute.ByteValue.Length);
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if (getBytes)
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{
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return value;
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}
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return DecodeSid(value);
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}
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public string[] GetAttributeArrayValue(LdapEntry ldapEntry, string attributeName)
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{
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var attribute = ldapEntry.GetAttribute(attributeName);
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return attribute == null ? null : attribute.StringValueArray;
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}
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private string DecodeSid(byte[] sid)
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{
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var strSid = new StringBuilder("S-");
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// get version
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int revision = sid[0];
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strSid.Append(revision.ToString(CultureInfo.InvariantCulture));
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//next byte is the count of sub-authorities
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var countSubAuths = sid[1] & 0xFF;
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//get the authority
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long authority = 0;
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//String rid = "";
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for (var i = 2; i <= 7; i++)
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{
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authority |= ((long)sid[i]) << (8 * (5 - (i - 2)));
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}
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strSid.Append("-");
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strSid.Append(authority);
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//iterate all the sub-auths
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var offset = 8;
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const int size = 4; //4 bytes for each sub auth
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for (var j = 0; j < countSubAuths; j++)
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{
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long subAuthority = 0;
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for (var k = 0; k < size; k++)
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{
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subAuthority |= (long)(sid[offset + k] & 0xFF) << (8 * k);
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}
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strSid.Append("-");
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strSid.Append(subAuthority);
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offset += size;
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}
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return strSid.ToString();
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}
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/// <summary>
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/// Create LDAPObject by LdapEntry
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/// </summary>
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/// <param name="ldapEntry">init ldapEntry</param>
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/// <param name="ldapUniqueIdAttribute"></param>
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/// <returns>LDAPObject</returns>
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public LdapObject ToLdapObject(LdapEntry ldapEntry, string ldapUniqueIdAttribute = null)
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{
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if (ldapEntry == null)
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throw new ArgumentNullException("ldapEntry");
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var novellLdapObject = new NovellLdapObject(_options, this);
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novellLdapObject.Init(ldapEntry, ldapUniqueIdAttribute);
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return novellLdapObject;
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}
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/// <summary>
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/// Create lis of LDAPObject by LdapEntry list
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/// </summary>
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/// <param name="entries">list of LdapEntry</param>
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/// <param name="ldapUniqueIdAttribute"></param>
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/// <returns>list of LDAPObjects</returns>
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public List<LdapObject> ToLdapObjects(IEnumerable<LdapEntry> entries, string ldapUniqueIdAttribute = null)
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{
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return entries.Select(e => ToLdapObject(e, ldapUniqueIdAttribute)).ToList();
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}
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}
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}
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