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350 lines
12 KiB
350 lines
12 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 System.Text;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Utilities
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{
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public sealed class Asn1Dump
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{
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private static readonly string NewLine = BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.NewLine;
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private Asn1Dump()
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{
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}
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private const string Tab = " ";
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private const int SampleSize = 32;
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/**
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* dump a Der object as a formatted string with indentation
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*
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* @param obj the Asn1Object to be dumped out.
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*/
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private static void AsString(
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string indent,
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bool verbose,
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Asn1Object obj,
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StringBuilder buf)
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{
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if (obj is Asn1Null)
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{
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buf.Append(indent);
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buf.Append("NULL");
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buf.Append(NewLine);
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}
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else if (obj is Asn1Sequence)
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{
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buf.Append(indent);
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if (obj is BerSequence)
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{
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buf.Append("BER Sequence");
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}
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else if (obj is DerSequence)
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{
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buf.Append("DER Sequence");
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}
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else
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{
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buf.Append("Sequence");
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}
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buf.Append(NewLine);
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Asn1Sequence sequence = (Asn1Sequence)obj;
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string elementsIndent = indent + Tab;
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for (int i = 0, count = sequence.Count; i < count; ++i)
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{
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AsString(elementsIndent, verbose, sequence[i].ToAsn1Object(), buf);
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}
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}
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else if (obj is Asn1Set)
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{
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buf.Append(indent);
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if (obj is BerSet)
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{
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buf.Append("BER Set");
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}
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else if (obj is DerSet)
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{
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buf.Append("DER Set");
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}
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else
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{
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buf.Append("Set");
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}
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buf.Append(NewLine);
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Asn1Set set = (Asn1Set)obj;
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string elementsIndent = indent + Tab;
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for (int i = 0, count = set.Count; i < count; ++i)
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{
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AsString(elementsIndent, verbose, set[i].ToAsn1Object(), buf);
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}
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}
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else if (obj is Asn1TaggedObject)
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{
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string tab = indent + Tab;
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buf.Append(indent);
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if (obj is BerTaggedObject)
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{
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buf.Append("BER Tagged [");
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}
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else
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{
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buf.Append("Tagged [");
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}
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Asn1TaggedObject o = (Asn1TaggedObject)obj;
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buf.Append(o.TagNo.ToString());
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buf.Append(']');
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if (!o.IsExplicit())
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{
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buf.Append(" IMPLICIT ");
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}
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buf.Append(NewLine);
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if (o.IsEmpty())
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{
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buf.Append(tab);
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buf.Append("EMPTY");
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buf.Append(NewLine);
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}
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else
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{
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AsString(tab, verbose, o.GetObject(), buf);
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}
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}
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else if (obj is DerObjectIdentifier)
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{
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buf.Append(indent + "ObjectIdentifier(" + ((DerObjectIdentifier)obj).Id + ")" + NewLine);
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}
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else if (obj is DerBoolean)
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{
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buf.Append(indent + "Boolean(" + ((DerBoolean)obj).IsTrue + ")" + NewLine);
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}
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else if (obj is DerInteger)
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{
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buf.Append(indent + "Integer(" + ((DerInteger)obj).Value + ")" + NewLine);
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}
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else if (obj is BerOctetString)
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{
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byte[] octets = ((Asn1OctetString)obj).GetOctets();
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string extra = verbose ? dumpBinaryDataAsString(indent, octets) : Hex.ToHexString(octets);
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buf.Append(indent + "BER Octet String" + "[" + octets.Length + "] " + extra + NewLine);
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}
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else if (obj is DerOctetString)
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{
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byte[] octets = ((Asn1OctetString)obj).GetOctets();
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string extra = verbose ? dumpBinaryDataAsString(indent, octets) : Hex.ToHexString(octets);
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buf.Append(indent + "DER Octet String" + "[" + octets.Length + "] " + extra + NewLine);
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}
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else if (obj is DerBitString)
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{
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DerBitString bt = (DerBitString)obj;
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byte[] bytes = bt.GetBytes();
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string extra = verbose ? dumpBinaryDataAsString(indent, bytes) : "";
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buf.Append(indent + "DER Bit String" + "[" + bytes.Length + ", " + bt.PadBits + "] " + extra + NewLine);
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}
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else if (obj is DerIA5String)
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{
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buf.Append(indent + "IA5String(" + ((DerIA5String)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerUtf8String)
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{
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buf.Append(indent + "UTF8String(" + ((DerUtf8String)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerPrintableString)
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{
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buf.Append(indent + "PrintableString(" + ((DerPrintableString)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerVisibleString)
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{
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buf.Append(indent + "VisibleString(" + ((DerVisibleString)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerBmpString)
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{
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buf.Append(indent + "BMPString(" + ((DerBmpString)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerT61String)
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{
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buf.Append(indent + "T61String(" + ((DerT61String)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerGraphicString)
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{
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buf.Append(indent + "GraphicString(" + ((DerGraphicString)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerVideotexString)
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{
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buf.Append(indent + "VideotexString(" + ((DerVideotexString)obj).GetString() + ") " + NewLine);
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}
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else if (obj is DerUtcTime)
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{
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buf.Append(indent + "UTCTime(" + ((DerUtcTime)obj).TimeString + ") " + NewLine);
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}
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else if (obj is DerGeneralizedTime)
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{
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buf.Append(indent + "GeneralizedTime(" + ((DerGeneralizedTime)obj).GetTime() + ") " + NewLine);
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}
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else if (obj is BerApplicationSpecific)
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{
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buf.Append(outputApplicationSpecific("BER", indent, verbose, (BerApplicationSpecific)obj));
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}
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else if (obj is DerApplicationSpecific)
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{
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buf.Append(outputApplicationSpecific("DER", indent, verbose, (DerApplicationSpecific)obj));
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}
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else if (obj is DerEnumerated)
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{
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DerEnumerated en = (DerEnumerated)obj;
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buf.Append(indent + "DER Enumerated(" + en.Value + ")" + NewLine);
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}
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else if (obj is DerExternal)
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{
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DerExternal ext = (DerExternal)obj;
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buf.Append(indent + "External " + NewLine);
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string tab = indent + Tab;
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if (ext.DirectReference != null)
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{
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buf.Append(tab + "Direct Reference: " + ext.DirectReference.Id + NewLine);
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}
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if (ext.IndirectReference != null)
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{
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buf.Append(tab + "Indirect Reference: " + ext.IndirectReference.ToString() + NewLine);
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}
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if (ext.DataValueDescriptor != null)
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{
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AsString(tab, verbose, ext.DataValueDescriptor, buf);
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}
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buf.Append(tab + "Encoding: " + ext.Encoding + NewLine);
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AsString(tab, verbose, ext.ExternalContent, buf);
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}
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else
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{
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buf.Append(indent + obj.ToString() + NewLine);
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}
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}
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private static string outputApplicationSpecific(
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string type,
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string indent,
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bool verbose,
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DerApplicationSpecific app)
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{
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StringBuilder buf = new StringBuilder();
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if (app.IsConstructed())
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{
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try
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{
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Asn1Sequence s = Asn1Sequence.GetInstance(app.GetObject(Asn1Tags.Sequence));
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buf.Append(indent + type + " ApplicationSpecific[" + app.ApplicationTag + "]" + NewLine);
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foreach (Asn1Encodable ae in s)
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{
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AsString(indent + Tab, verbose, ae.ToAsn1Object(), buf);
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}
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}
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catch (IOException e)
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{
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buf.Append(e);
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}
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return buf.ToString();
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}
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return indent + type + " ApplicationSpecific[" + app.ApplicationTag + "] ("
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+ Hex.ToHexString(app.GetContents()) + ")" + NewLine;
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}
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/**
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* dump out a DER object as a formatted string, in non-verbose mode
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*
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* @param obj the Asn1Encodable to be dumped out.
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* @return the resulting string.
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*/
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public static string DumpAsString(
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Asn1Encodable obj)
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{
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return DumpAsString(obj, false);
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}
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/**
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* Dump out the object as a string
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*
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* @param obj the Asn1Encodable to be dumped out.
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* @param verbose if true, dump out the contents of octet and bit strings.
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* @return the resulting string.
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*/
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public static string DumpAsString(
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Asn1Encodable obj,
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bool verbose)
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{
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StringBuilder buf = new StringBuilder();
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AsString("", verbose, obj.ToAsn1Object(), buf);
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return buf.ToString();
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}
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private static string dumpBinaryDataAsString(string indent, byte[] bytes)
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{
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indent += Tab;
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StringBuilder buf = new StringBuilder(NewLine);
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for (int i = 0; i < bytes.Length; i += SampleSize)
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{
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if (bytes.Length - i > SampleSize)
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{
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buf.Append(indent);
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buf.Append(Hex.ToHexString(bytes, i, SampleSize));
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buf.Append(Tab);
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buf.Append(calculateAscString(bytes, i, SampleSize));
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buf.Append(NewLine);
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}
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else
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{
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buf.Append(indent);
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buf.Append(Hex.ToHexString(bytes, i, bytes.Length - i));
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for (int j = bytes.Length - i; j != SampleSize; j++)
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{
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buf.Append(" ");
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}
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buf.Append(Tab);
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buf.Append(calculateAscString(bytes, i, bytes.Length - i));
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buf.Append(NewLine);
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}
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}
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return buf.ToString();
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}
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private static string calculateAscString(
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byte[] bytes,
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int off,
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int len)
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{
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StringBuilder buf = new StringBuilder();
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for (int i = off; i != off + len; i++)
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{
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char c = (char)bytes[i];
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if (c >= ' ' && c <= '~')
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{
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buf.Append(c);
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}
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}
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return buf.ToString();
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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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