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92 lines
3.3 KiB
92 lines
3.3 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using System.Collections;
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using System.IO;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.IO;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Tls
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{
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public sealed class ServerNameList
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{
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private readonly IList m_serverNameList;
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/// <param name="serverNameList">an <see cref="IList"/> of <see cref="ServerName"/>.</param>
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public ServerNameList(IList serverNameList)
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{
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if (null == serverNameList)
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throw new ArgumentNullException("serverNameList");
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this.m_serverNameList = serverNameList;
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}
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/// <returns>an <see cref="IList"/> of <see cref="ServerName"/>.</returns>
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public IList ServerNames
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{
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get { return m_serverNameList; }
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}
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/// <summary>Encode this <see cref="ServerNameList"/> to a <see cref="Stream"/>.</summary>
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/// <param name="output">the <see cref="Stream"/> to encode to .</param>
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/// <exception cref="IOException"/>
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public void Encode(Stream output)
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{
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MemoryStream buf = new MemoryStream();
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short[] nameTypesSeen = TlsUtilities.EmptyShorts;
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foreach (ServerName entry in ServerNames)
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{
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nameTypesSeen = CheckNameType(nameTypesSeen, entry.NameType);
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if (null == nameTypesSeen)
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throw new TlsFatalAlert(AlertDescription.internal_error);
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entry.Encode(buf);
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}
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int length = (int)buf.Length;
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TlsUtilities.CheckUint16(length);
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TlsUtilities.WriteUint16(length, output);
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Streams.WriteBufTo(buf, output);
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}
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/// <summary>Parse a <see cref="ServerNameList"/> from a <see cref="Stream"/>.</summary>
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/// <param name="input">the <see cref="Stream"/> to parse from.</param>
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/// <returns>a <see cref="ServerNameList"/> object.</returns>
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/// <exception cref="IOException"/>
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public static ServerNameList Parse(Stream input)
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{
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byte[] data = TlsUtilities.ReadOpaque16(input, 1);
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MemoryStream buf = new MemoryStream(data, false);
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short[] nameTypesSeen = TlsUtilities.EmptyShorts;
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IList server_name_list = BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.CreateArrayList();
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while (buf.Position < buf.Length)
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{
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ServerName entry = ServerName.Parse(buf);
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nameTypesSeen = CheckNameType(nameTypesSeen, entry.NameType);
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if (null == nameTypesSeen)
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throw new TlsFatalAlert(AlertDescription.illegal_parameter);
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server_name_list.Add(entry);
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}
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return new ServerNameList(server_name_list);
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}
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private static short[] CheckNameType(short[] nameTypesSeen, short nameType)
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{
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// RFC 6066 3. The ServerNameList MUST NOT contain more than one name of the same NameType.
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if (Arrays.Contains(nameTypesSeen, nameType))
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return null;
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return Arrays.Append(nameTypesSeen, nameType);
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}
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}
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}
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#pragma warning restore
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#endif
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