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88 lines
2.9 KiB
88 lines
2.9 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.IO;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Tls
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{
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/// <summary>RFC 6066 5.</summary>
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public sealed class UrlAndHash
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{
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private readonly string m_url;
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private readonly byte[] m_sha1Hash;
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public UrlAndHash(string url, byte[] sha1Hash)
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{
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if (TlsUtilities.IsNullOrEmpty(url) || url.Length >= (1 << 16))
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throw new ArgumentException("must have length from 1 to (2^16 - 1)", "url");
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if (sha1Hash != null && sha1Hash.Length != 20)
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throw new ArgumentException("must have length == 20, if present", "sha1Hash");
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this.m_url = url;
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this.m_sha1Hash = sha1Hash;
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}
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public string Url
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{
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get { return m_url; }
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}
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public byte[] Sha1Hash
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{
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get { return m_sha1Hash; }
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}
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/// <summary>Encode this <see cref="UrlAndHash"/> 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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byte[] urlEncoding = Strings.ToByteArray(m_url);
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TlsUtilities.WriteOpaque16(urlEncoding, output);
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if (m_sha1Hash == null)
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{
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TlsUtilities.WriteUint8(0, output);
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}
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else
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{
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TlsUtilities.WriteUint8(1, output);
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output.Write(m_sha1Hash, 0, m_sha1Hash.Length);
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}
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}
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/// <summary>Parse a <see cref="UrlAndHash"/> from a <see cref="Stream"/>.</summary>
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/// <param name="context">the <see cref="TlsContext"/> of the current connection.</param>
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/// <param name="input">the <see cref="Stream"/> to parse from.</param>
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/// <returns>a <see cref="UrlAndHash"/> object.</returns>
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/// <exception cref="IOException"/>
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public static UrlAndHash Parse(TlsContext context, Stream input)
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{
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byte[] urlEncoding = TlsUtilities.ReadOpaque16(input, 1);
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string url = Strings.FromByteArray(urlEncoding);
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byte[] sha1Hash = null;
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short padding = TlsUtilities.ReadUint8(input);
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switch (padding)
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{
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case 0:
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if (TlsUtilities.IsTlsV12(context))
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throw new TlsFatalAlert(AlertDescription.illegal_parameter);
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break;
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case 1:
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sha1Hash = TlsUtilities.ReadFully(20, input);
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break;
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default:
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throw new TlsFatalAlert(AlertDescription.illegal_parameter);
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}
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return new UrlAndHash(url, sha1Hash);
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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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