internal PositionInfo(EmberId emberId, bool isInner, long lengthPosition, long?endPosition)
{
this.EmberId = emberId;
this.IsInner = isInner;
this.LengthPosition = lengthPosition;
this.EndPosition = endPosition;
}
public void MainTest()
{
var u1 = default(EmberId);
var n1 = this.Random.Next();
var n2 = n1 + 1;
var a1 = EmberId.CreateApplication(n1);
var a2 = EmberId.CreateApplication(n2);
var c1 = EmberId.CreateContextSpecific(n1);
EmberId p1;
using (var stream = new MemoryStream(new byte[] { 0xE0, 0x03, 0x01, 0x01, 0xFF }))
using (var reader = new EmberReader(stream, 1))
{
reader.Read();
p1 = reader.OuterId;
}
TestStructEquality(a1, a2, (l, r) => l == r, (l, r) => l != r);
TestStructEquality(a1, c1, (l, r) => l == r, (l, r) => l != r);
TestParse(u1);
TestParse(a1);
TestParse(c1);
TestParse(p1);
EmberId dummy;
Assert.IsFalse(EmberId.TryParse("S-234", out dummy));
Assert.IsFalse(EmberId.TryParse("U+234", out dummy));
Assert.IsFalse(EmberId.TryParse("P--234", out dummy));
Assert.IsFalse(EmberId.TryParse("A-89345734579385749354", out dummy));
}
public void ExceptionTest()
{
AssertThrow <ArgumentNullException>(() => new EmberWriter(null, 1).Dispose());
AssertThrow <ArgumentException>(() => new EmberWriter(new MemoryStream(), 0).Dispose());
using (var writer = new EmberWriter(new MemoryStream(), 1))
{
var outer = EmberId.CreateApplication(0);
AssertThrow <ArgumentNullException>(
() => writer.WriteValue(outer, (byte[])null),
() => writer.WriteValue(outer, (int[])null),
() => writer.WriteValue(outer, (string)null));
AssertThrow <ArgumentOutOfRangeException>(
() => writer.WriteStartApplicationDefinedType(outer, InnerNumber.FirstApplication - 1));
writer.Dispose();
AssertThrow <ObjectDisposedException>(
() => writer.WriteValue(outer, true),
() => writer.WriteValue(outer, 0),
() => writer.WriteValue(outer, new byte[] { }),
() => writer.WriteValue(outer, 0.0),
() => writer.WriteValue(outer, string.Empty),
() => writer.WriteValue(outer, new int[] { }),
() => writer.WriteStartSequence(outer),
() => writer.WriteStartSet(outer),
() => writer.WriteStartApplicationDefinedType(outer, InnerNumber.FirstApplication),
() => writer.WriteEndContainer());
}
}
private static void AssertDecode(int expectedInnerNumber, Action <EmberReader> assertEqual, params byte[] input)
{
using (var stream = new MemoryStream(input))
using (var reader = new EmberReader(stream, 1))
{
AssertThrow <InvalidOperationException>(() => reader.InnerNumber.GetHashCode().Ignore());
AssertThrow <InvalidOperationException>(() => reader.OuterId.Ignore());
AssertThrow <InvalidOperationException>(() => reader.ReadContentsAsObject());
Assert.IsFalse(reader.CanReadContents);
Assert.IsTrue(reader.Read());
Assert.AreEqual(EmberId.CreateApplication(0), reader.OuterId);
Assert.AreEqual(expectedInnerNumber, reader.InnerNumber);
assertEqual(reader);
AssertThrow <InvalidOperationException>(() => reader.ReadContentsAsObject());
Assert.IsFalse(reader.Read());
reader.Dispose();
Assert.IsFalse(reader.CanReadContents);
AssertThrow <ObjectDisposedException>(() => reader.InnerNumber.Ignore());
AssertThrow <ObjectDisposedException>(() => reader.OuterId.Ignore());
AssertThrow <ObjectDisposedException>(() => reader.ReadContentsAsObject());
}
using (var writer = XmlWriter.Create(Console.Out, new XmlWriterSettings()
{
Indent = true
}))
{
new EmberConverter(GlowTypes.Instance).ToXml(input, writer);
Console.WriteLine();
Console.WriteLine();
}
}
/// <summary>Writes <paramref name="outer"/> with definite length followed by <paramref name="value"/> as
/// Boolean.</summary>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteValue(EmberId outer, bool value)
{
this.AssertNotDisposed();
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength + 1);
this.WriteIdentifiersAndLengths(outer, Boolean, 1);
Write8Bit(this.writeBuffer, value ? Constants.AllBitsSetLong : 0, 0); // AllBitsSet is encoded as 0xFF
}
private bool ProcessOuter(EmberId id, long idPosition)
{
if (id == EndContainer)
{
if (ReadLength(this.readBuffer) != 0)
{
throw CreateEmberException(
"Unexpected length for End-of-contents identifier at position {0}.", idPosition);
}
if (this.endPositions.Count == 0)
{
throw CreateEmberException(
"Unexpected excess End-of-contents identifier at position {0}.", idPosition);
}
var endPosition = this.endPositions.Pop();
if (endPosition.EndPosition.HasValue)
{
throw CreateEmberException(
"Unexpected End-of-contents identifier at position {0} for definite length at position {1}.",
idPosition,
endPosition.LengthPosition);
}
return(IsContainer(endPosition));
}
else
{
this.ReadAndProcessLength(id, false);
return(true);
}
}
private static byte GetLeadingOctet(EmberId emberId, int bits)
{
const int PrimitiveFlag = 0x00;
const int ConstructedFlag = 0x20;
return((byte)((int)emberId.Class | (emberId.IsConstructed ? ConstructedFlag : PrimitiveFlag) | bits));
}
private void ReadAndProcessLength(EmberId id, bool isInner)
{
var lengthPosition = this.readBuffer.Position;
var length = ReadLength(this.readBuffer);
this.endPositions.Push(new PositionInfo(id, isInner, lengthPosition, this.readBuffer.Position + length));
}
/// <summary>Writes <paramref name="outer"/> with definite length followed by <paramref name="value"/> as
/// Relative object identifier.</summary>
/// <exception cref="ArgumentNullException"><paramref name="value"/> equals <c>null</c>.</exception>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteValue(EmberId outer, int[] value)
{
this.AssertNotDisposed();
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
// For byte[] values, the buffer size does not matter
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength);
this.tempBuffer.Reserve(SubidentifierMaxLength * value.Length);
try
{
// See http://www.itu.int/ITU-T/studygroups/com17/languages/X.690-0207.pdf, chapter 8.20.2.
foreach (int number in value)
{
Write7Bit(this.tempBuffer, number, Get7BitStartShift(number));
}
this.WriteIdentifiersAndLengths(outer, RelativeObjectIdentifier, this.tempBuffer.Count);
this.tempBuffer.Flush();
}
finally
{
// Make sure that tempBuffer is empty if anything goes wrong
this.tempBuffer.Count = 0;
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
private static void TestParse(EmberId emberId)
{
EmberId parsed;
Assert.IsTrue(EmberId.TryParse(emberId.ToString(), out parsed));
Assert.AreEqual(emberId, parsed);
Console.WriteLine(emberId);
}
/// <summary>Writes <paramref name="outer"/> with definite length followed by <paramref name="value"/> as
/// Integer.</summary>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteValue(EmberId outer, long value)
{
this.AssertNotDisposed();
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength + Constants.BytesPerLong);
var shift = Get8BitStartShift(value, true);
this.WriteIdentifiersAndLengths(outer, Integer, GetLengthFromShift8Bit(shift));
Write8Bit(this.writeBuffer, value, shift);
}
/// <summary>See <i>"X.690"</i><cite>X.690</cite>, chapter 8.1.2.</summary>
private static void WriteIdentifier(WriteBuffer writeBuffer, EmberId emberId)
{
if (emberId.Number <= 30)
{
writeBuffer[writeBuffer.Count++] = GetLeadingOctet(emberId, emberId.Number);
}
else
{
writeBuffer[writeBuffer.Count++] = GetLeadingOctet(emberId, 0x1F);
Write7Bit(writeBuffer, emberId.Number, Get7BitStartShift(emberId.Number));
}
}
private EmberId GetFieldId(FieldPath <string, string> fieldPath)
{
EmberId emberId;
if (this.fieldIds.TryGetValue(fieldPath, out emberId) ||
EmberId.TryParse(fieldPath.Tail.GetValueOrDefault().FieldId, out emberId))
{
return(emberId);
}
throw new XmlException(string.Format(InvariantCulture, "Unknown field path: {0}.", fieldPath));
}
/// <summary>Writes <paramref name="outer"/> with indefinite length followed by the start of an
/// application-defined type with indefinite length.</summary>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="innerNumber"/> is smaller than
/// <see cref="InnerNumber.FirstApplication"/>.</exception>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteStartApplicationDefinedType(EmberId outer, int innerNumber)
{
this.AssertNotDisposed();
if (innerNumber < InnerNumber.FirstApplication)
{
throw new ArgumentOutOfRangeException(
nameof(innerNumber), "Must be greater than or equal to InnerNumber.StartFirstApplication");
}
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength);
this.WriteIdentifiersAndLengths(outer, EmberId.FromInnerNumber(innerNumber), null);
}
/// <summary>Writes <paramref name="outer"/> with definite length followed by <paramref name="value"/> as
/// Octetstring.</summary>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteValue(EmberId outer, byte[] value)
{
this.AssertNotDisposed();
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
// For byte[] values, the buffer size does not matter
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength);
this.WriteIdentifiersAndLengths(outer, Octetstring, value.Length);
this.writeBuffer.Write(value, 0, value.Length);
}
private void WriteIdentifiersAndLengths(EmberId outer, EmberId inner, int?innerLength)
{
// The outer length is the inner length + the length of the inner length field + the length of the inner
// token (for definite lengths the inner token is always universal and therefore one byte).
int innerShift;
var innerLengthLength = GetLengthLength(innerLength, out innerShift);
var outerLength = innerLength + innerLengthLength + 1;
int outerShift;
var outerLengthLength = GetLengthLength(outerLength, out outerShift);
WriteIdentifier(this.writeBuffer, outer);
WriteLength(this.writeBuffer, outerLength, outerShift, outerLengthLength);
WriteIdentifier(this.writeBuffer, inner);
WriteLength(this.writeBuffer, innerLength, innerShift, innerLengthLength);
}
/// <summary>Writes <paramref name="outer"/> with definite length followed by <paramref name="value"/> as
/// UTF8String.</summary>
/// <exception cref="ArgumentNullException"><paramref name="value"/> equals <c>null</c>.</exception>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteValue(EmberId outer, string value)
{
this.AssertNotDisposed();
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
var byteCount = Encoding.UTF8.GetByteCount(value);
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength + byteCount);
this.WriteIdentifiersAndLengths(outer, Utf8String, byteCount);
this.writeBuffer.WriteAsUtf8(value, byteCount);
}
private static void WriteOctetstring(XmlReader reader, EmberWriter writer, EmberId fieldId)
{
var buffer = new byte[1024];
using (var stream = new MemoryStream())
{
var read = ReadValue(reader, r => (int?)r.ReadContentAsBinHex(buffer, 0, buffer.Length), 0);
while (read > 0)
{
stream.Write(buffer, 0, read.Value);
read = reader.ReadContentAsBinHex(buffer, 0, buffer.Length);
}
writer.WriteValue(fieldId, stream.ToArray());
}
}
public void MainTest()
{
AssertEncode(
writer => writer.WriteValue(EmberId.CreateApplication(0), true),
0x60, 0x03, 0x01, 0x01, 0xFF);
AssertEncode(
writer => writer.WriteValue(EmberId.CreateContextSpecific(1), 0x80),
0xA1, 0x04, 0x02, 0x02, 0x00, 0x80);
AssertEncode(
writer => writer.WriteValue(EmberId.CreateApplication(2), new byte[] { 0x42 }),
0x62, 0x03, 0x04, 0x01, 0x42);
AssertEncode(writer => writer.WriteValue(EmberId.CreateContextSpecific(3), 0.0), 0xA3, 0x02, 0x09, 0x00);
AssertEncode(writer => writer.WriteValue(EmberId.CreateContextSpecific(3), double.PositiveInfinity), 0xA3, 0x03, 0x09, 0x01, 0x40);
AssertEncode(writer => writer.WriteValue(EmberId.CreateContextSpecific(3), double.NegativeInfinity), 0xA3, 0x03, 0x09, 0x01, 0x41);
AssertEncode(writer => writer.WriteValue(EmberId.CreateContextSpecific(3), double.NaN), 0xA3, 0x03, 0x09, 0x01, 0x42);
AssertEncode(writer => writer.WriteValue(EmberId.CreateContextSpecific(3), -0.0), 0xA3, 0x03, 0x09, 0x01, 0x43);
AssertEncode(writer => writer.WriteValue(EmberId.CreateContextSpecific(3), -1.0), 0xA3, 0x05, 0x09, 0x03, 0xC0, 0x00, 0x01);
AssertEncode(
writer => writer.WriteValue(EmberId.CreateApplication(4), "A"),
0x64, 0x03, 0x0C, 0x01, 0x41);
AssertEncode(
writer => writer.WriteValue(EmberId.CreateContextSpecific(5), new[] { 15 }),
0xA5, 0x03, 0x0D, 0x01, 0x0F);
AssertEncode(
writer => writer.WriteStartSequence(EmberId.CreateApplication(6)),
0x66, 0x80, 0x30, 0x80);
AssertEncode(
writer => writer.WriteStartSet(EmberId.CreateContextSpecific(7)),
0xA7, 0x80, 0x31, 0x80);
AssertEncode(
writer => writer.WriteStartApplicationDefinedType(
EmberId.CreateContextSpecific(7), InnerNumber.FirstApplication),
0xA7, 0x80, 0x60, 0x80);
AssertEncode(
writer => writer.WriteEndContainer(),
0x00, 0x00, 0x00, 0x00);
}
/// <summary>Writes <paramref name="outer"/> with definite length followed by <paramref name="value"/> as
/// Real.</summary>
/// <exception cref="NotSupportedException">This method is called on a big endian CPU, which is currently not
/// supported.</exception>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteValue(EmberId outer, double value)
{
this.AssertNotDisposed();
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength);
this.tempBuffer.Reserve(10); // 1st byte followed by max. 2 exponent bytes, followed by max 7 mantissa bytes
try
{
WriteReal(this.tempBuffer, value);
this.WriteIdentifiersAndLengths(outer, Real, this.tempBuffer.Count);
this.tempBuffer.Flush();
}
finally
{
this.tempBuffer.Count = 0;
}
}
public void InvalidXmlCharactersTest()
{
using (var stream = new MemoryStream())
{
using (var writer = new EmberWriter(stream))
{
writer.WriteValue(EmberId.CreateContextSpecific(0), "\0");
}
var builder = new StringBuilder();
using (var xmlWriter = XmlWriter.Create(builder))
{
var converter = new EmberConverter();
converter.ToXml(stream.ToArray(), xmlWriter);
}
}
}
private int GetInnerNumber(string type)
{
int innerNumber;
if (this.innerNumbers.TryGetValue(type, out innerNumber))
{
return(innerNumber);
}
EmberId id;
int? innerNumberCandidate;
if (EmberId.TryParse(type, out id) && (innerNumberCandidate = id.ToInnerNumber()).HasValue)
{
return(innerNumberCandidate.Value);
}
throw new XmlException(string.Format(InvariantCulture, "Unknown type: {0}.", type));
}
private void AssertEqual <T>(
Action <EmberLib.EmberWriter, BerTag, T> write, Func <EmberReader, T> read, T value, Action <T, T> assertEqual)
{
var number = this.Random.Next();
var outerId = EmberId.CreateApplication(number);
var tag = new BerTag(BerClass.Application, (uint)number);
var output = new BerMemoryOutput();
var writer = new EmberLib.EmberWriter(output);
write(writer, tag, value);
using (var input = new MemoryStream(output.ToArray()))
using (var reader = new EmberReader(input, 1))
{
Assert.IsTrue(reader.Read());
Assert.AreEqual(outerId, reader.OuterId);
assertEqual(value, read(reader));
}
}
private int ValidateIdentifierAndLength(EmberId innerIdentifier, long innerIdentifierPosition)
{
if (innerIdentifier.IsConstructed)
{
throw CreateEmberException(
"Unexpected constructed encoding at position {0}.", innerIdentifierPosition);
}
innerIdentifier.Ignore();
var length = this.ContentsLength;
if (!length.HasValue)
{
throw CreateEmberException(
"Unexpected indefinite length for primitive data value at position {0}.",
innerIdentifierPosition);
}
this.CanReadContents = true;
return(length.Value);
}
public void SkipContentsTest()
{
using (var stream = new MemoryStream(new byte[] { 0x60, 0x03, 0x01, 0x01, 0xFF, 0x60, 0x03, 0x01, 0x01, 0x00 }))
using (var reader = new EmberReader(stream, 1))
{
Assert.IsTrue(reader.Read());
Assert.IsTrue(reader.Read());
Assert.IsFalse(reader.ReadContentsAsBoolean());
}
var original = new byte[64];
this.Random.NextBytes(original);
byte[] encoded;
using (var stream = new MemoryStream())
{
using (var writer = new EmberWriter(stream))
{
writer.WriteValue(EmberId.CreateApplication(0), original);
writer.WriteValue(EmberId.CreateApplication(1), true);
}
encoded = stream.ToArray();
}
using (var stream = new MemoryStream(encoded))
using (var reader = new EmberReader(stream, 1))
{
Assert.IsTrue(reader.Read());
Assert.AreEqual(InnerNumber.Octetstring, reader.InnerNumber);
Assert.IsTrue(reader.Read());
Assert.AreEqual(InnerNumber.Boolean, reader.InnerNumber);
Assert.AreEqual(true, reader.ReadContentsAsBoolean());
Assert.IsFalse(reader.Read());
}
}
private static void WriteRelativeObjectIdentifier(XmlReader reader, EmberWriter writer, EmberId fieldId)
{
var pathElements = ReadValue(reader, r => r.ReadContentAsString()).Split('.');
var value = (pathElements.Length == 1) && string.IsNullOrEmpty(pathElements[0]) ?
new int[0] : pathElements.Select(s => int.Parse(s, InvariantCulture)).ToArray();
writer.WriteValue(fieldId, value);
}
/// <summary>Writes <paramref name="outer"/> with indefinite length followed by the start of a set with
/// indefinite length.</summary>
/// <exception cref="ObjectDisposedException"><see cref="Dispose"/> has been called.</exception>
public void WriteStartSet(EmberId outer)
{
this.AssertNotDisposed();
this.writeBuffer.Reserve(IdentifiersAndLengthsMaxLength);
this.WriteIdentifiersAndLengths(outer, Set, null);
}
public void ExceptionTest() =>
AssertThrow <ArgumentOutOfRangeException>(
() => EmberId.CreateApplication(-1),
() => EmberId.CreateContextSpecific(-1));
private static string GetFallbackName(int innerNumber) => EmberId.FromInnerNumber(innerNumber).ToString();
