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87 lines
2.9 KiB
87 lines
2.9 KiB
#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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