Beispiel #1
0
        internal static void Decode <T>(AsnReader reader, Asn1Tag expectedTag, out T decoded)
            where T : KrbEncKrbCredPart, new()
        {
            if (reader == null)
            {
                throw new ArgumentNullException(nameof(reader));
            }

            decoded = new T();

            AsnReader sequenceReader = reader.ReadSequence(expectedTag);
            AsnReader explicitReader;
            AsnReader collectionReader;

            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0));
            // Decode SEQUENCE OF for TicketInfo
            {
                collectionReader = explicitReader.ReadSequence();
                var         tmpList = new List <KrbCredInfo>();
                KrbCredInfo tmpItem;

                while (collectionReader.HasData)
                {
                    KrbCredInfo.Decode <KrbCredInfo>(collectionReader, out KrbCredInfo tmp);
                    tmpItem = tmp;
                    tmpList.Add(tmpItem);
                }

                decoded.TicketInfo = tmpList.ToArray();
            }

            explicitReader.ThrowIfNotEmpty();

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 1));

                if (explicitReader.TryReadInt32(out int tmpNonce))
                {
                    decoded.Nonce = tmpNonce;
                }
                else
                {
                    explicitReader.ThrowIfNotEmpty();
                }

                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 2)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 2));

                decoded.Timestamp = explicitReader.ReadGeneralizedTime();
                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 3)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 3));

                if (explicitReader.TryReadInt32(out int tmpUSec))
                {
                    decoded.USec = tmpUSec;
                }
                else
                {
                    explicitReader.ThrowIfNotEmpty();
                }

                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 4)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 4));

                KrbHostAddress.Decode <KrbHostAddress>(explicitReader, out KrbHostAddress tmpSAddress);
                decoded.SAddress = tmpSAddress;
                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 5)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 5));

                KrbHostAddress.Decode <KrbHostAddress>(explicitReader, out KrbHostAddress tmpRAddress);
                decoded.RAddress = tmpRAddress;
                explicitReader.ThrowIfNotEmpty();
            }

            sequenceReader.ThrowIfNotEmpty();
        }
Beispiel #2
0
        internal static void Decode <T>(AsnReader reader, Asn1Tag expectedTag, out T decoded)
            where T : KrbEncTicketPart, new()
        {
            if (reader == null)
            {
                throw new ArgumentNullException(nameof(reader));
            }

            decoded = new T();
            AsnReader sequenceReader = reader.ReadSequence(expectedTag);
            AsnReader explicitReader;
            AsnReader collectionReader;


            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0));

            if (explicitReader.TryReadPrimitiveBitStringValue(out _, out ReadOnlyMemory <byte> tmpFlags))
            {
                decoded.Flags = (TicketFlags)tmpFlags.AsLong();
            }
            else
            {
                decoded.Flags = (TicketFlags)explicitReader.ReadBitString(out _).AsLong();
            }

            explicitReader.ThrowIfNotEmpty();


            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 1));
            KrbEncryptionKey.Decode <KrbEncryptionKey>(explicitReader, out decoded.Key);
            explicitReader.ThrowIfNotEmpty();


            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 2));
            decoded.CRealm = explicitReader.ReadCharacterString(UniversalTagNumber.GeneralString);
            explicitReader.ThrowIfNotEmpty();


            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 3));
            KrbPrincipalName.Decode <KrbPrincipalName>(explicitReader, out decoded.CName);
            explicitReader.ThrowIfNotEmpty();


            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 4));
            KrbTransitedEncoding.Decode <KrbTransitedEncoding>(explicitReader, out decoded.Transited);
            explicitReader.ThrowIfNotEmpty();


            explicitReader   = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 5));
            decoded.AuthTime = explicitReader.ReadGeneralizedTime();
            explicitReader.ThrowIfNotEmpty();


            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 6)))
            {
                explicitReader    = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 6));
                decoded.StartTime = explicitReader.ReadGeneralizedTime();
                explicitReader.ThrowIfNotEmpty();
            }


            explicitReader  = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 7));
            decoded.EndTime = explicitReader.ReadGeneralizedTime();
            explicitReader.ThrowIfNotEmpty();


            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 8)))
            {
                explicitReader    = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 8));
                decoded.RenewTill = explicitReader.ReadGeneralizedTime();
                explicitReader.ThrowIfNotEmpty();
            }


            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 9)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 9));

                // Decode SEQUENCE OF for CAddr
                {
                    collectionReader = explicitReader.ReadSequence();
                    var            tmpList = new List <KrbHostAddress>();
                    KrbHostAddress tmpItem;

                    while (collectionReader.HasData)
                    {
                        KrbHostAddress.Decode <KrbHostAddress>(collectionReader, out tmpItem);
                        tmpList.Add(tmpItem);
                    }

                    decoded.CAddr = tmpList.ToArray();
                }

                explicitReader.ThrowIfNotEmpty();
            }


            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 10)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 10));

                // Decode SEQUENCE OF for AuthorizationData
                {
                    collectionReader = explicitReader.ReadSequence();
                    var tmpList = new List <KrbAuthorizationData>();
                    KrbAuthorizationData tmpItem;

                    while (collectionReader.HasData)
                    {
                        KrbAuthorizationData.Decode <KrbAuthorizationData>(collectionReader, out tmpItem);
                        tmpList.Add(tmpItem);
                    }

                    decoded.AuthorizationData = tmpList.ToArray();
                }

                explicitReader.ThrowIfNotEmpty();
            }


            sequenceReader.ThrowIfNotEmpty();
        }
        internal static void Decode <T>(AsnReader reader, Asn1Tag expectedTag, out T decoded)
            where T : KrbKdcReqBody, new()
        {
            if (reader == null)
            {
                throw new ArgumentNullException(nameof(reader));
            }

            decoded = new T();

            AsnReader sequenceReader = reader.ReadSequence(expectedTag);
            AsnReader explicitReader;
            AsnReader collectionReader;

            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 0));

            if (explicitReader.TryReadPrimitiveBitStringValue(out _, out ReadOnlyMemory <byte> tmpKdcOptions))
            {
                decoded.KdcOptions = (KdcOptions)tmpKdcOptions.AsLong();
            }
            else
            {
                decoded.KdcOptions = (KdcOptions)explicitReader.ReadBitString(out _).AsLong();
            }


            explicitReader.ThrowIfNotEmpty();

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 1)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 1));

                KrbPrincipalName.Decode <KrbPrincipalName>(explicitReader, out KrbPrincipalName tmpCName);
                decoded.CName = tmpCName;
                explicitReader.ThrowIfNotEmpty();
            }

            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 2));
            decoded.Realm  = explicitReader.ReadCharacterString(UniversalTagNumber.GeneralString);

            explicitReader.ThrowIfNotEmpty();

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 3)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 3));

                KrbPrincipalName.Decode <KrbPrincipalName>(explicitReader, out KrbPrincipalName tmpSName);
                decoded.SName = tmpSName;
                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 4)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 4));

                decoded.From = explicitReader.ReadGeneralizedTime();
                explicitReader.ThrowIfNotEmpty();
            }

            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 5));
            decoded.Till   = explicitReader.ReadGeneralizedTime();

            explicitReader.ThrowIfNotEmpty();

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 6)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 6));

                decoded.RTime = explicitReader.ReadGeneralizedTime();
                explicitReader.ThrowIfNotEmpty();
            }

            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 7));

            if (!explicitReader.TryReadInt32(out int tmpNonce))
            {
                explicitReader.ThrowIfNotEmpty();
            }

            decoded.Nonce = tmpNonce;

            explicitReader.ThrowIfNotEmpty();

            explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 8));
            // Decode SEQUENCE OF for EType
            {
                collectionReader = explicitReader.ReadSequence();
                var            tmpList = new List <EncryptionType>();
                EncryptionType tmpItem;

                while (collectionReader.HasData)
                {
                    if (!collectionReader.TryReadInt32(out EncryptionType tmp))
                    {
                        collectionReader.ThrowIfNotEmpty();
                    }

                    tmpItem = tmp;
                    tmpList.Add(tmpItem);
                }

                decoded.EType = tmpList.ToArray();
            }

            explicitReader.ThrowIfNotEmpty();

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 9)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 9));

                // Decode SEQUENCE OF for Addresses
                {
                    collectionReader = explicitReader.ReadSequence();
                    var            tmpList = new List <KrbHostAddress>();
                    KrbHostAddress tmpItem;

                    while (collectionReader.HasData)
                    {
                        KrbHostAddress.Decode <KrbHostAddress>(collectionReader, out KrbHostAddress tmp);
                        tmpItem = tmp;
                        tmpList.Add(tmpItem);
                    }

                    decoded.Addresses = tmpList.ToArray();
                }
                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 10)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 10));

                KrbEncryptedData.Decode <KrbEncryptedData>(explicitReader, out KrbEncryptedData tmpEncAuthorizationData);
                decoded.EncAuthorizationData = tmpEncAuthorizationData;
                explicitReader.ThrowIfNotEmpty();
            }

            if (sequenceReader.HasData && sequenceReader.PeekTag().HasSameClassAndValue(new Asn1Tag(TagClass.ContextSpecific, 11)))
            {
                explicitReader = sequenceReader.ReadSequence(new Asn1Tag(TagClass.ContextSpecific, 11));

                // Decode SEQUENCE OF for AdditionalTickets
                {
                    collectionReader = explicitReader.ReadSequence();
                    var       tmpList = new List <KrbTicket>();
                    KrbTicket tmpItem;

                    while (collectionReader.HasData)
                    {
                        KrbTicket.Decode <KrbTicket>(collectionReader, out KrbTicket tmp);
                        tmpItem = tmp;
                        tmpList.Add(tmpItem);
                    }

                    decoded.AdditionalTickets = tmpList.ToArray();
                }
                explicitReader.ThrowIfNotEmpty();
            }

            sequenceReader.ThrowIfNotEmpty();
        }