public void EncodeInPlace()
{
const int numberOfBytes = 15;
var list = new List <byte>();
for (int value = 0; value < numberOfBytes; value++)
{
list.Add((byte)value);
}
// padding
for (int i = 0; i < (numberOfBytes / 3) + 2; i++)
{
list.Add(0);
}
var testBytes = list.ToArray();
for (int numberOfBytesToTest = 1; numberOfBytesToTest <= numberOfBytes; numberOfBytesToTest++)
{
var copy = testBytes.Clone();
var expectedText = Convert.ToBase64String(testBytes, 0, numberOfBytesToTest);
Assert.Equal(OperationStatus.Done, Base64.BytesToUtf8InPlace(testBytes, numberOfBytesToTest, out int bytesWritten));
Assert.Equal(Base64.BytesToUtf8Length(numberOfBytesToTest), bytesWritten);
var encodedText = Text.Encoding.ASCII.GetString(testBytes, 0, bytesWritten);
Assert.Equal(expectedText, encodedText);
}
}
public static bool TryWrite(Span <byte> output, Sha256 hash, string keyType, string verb, string resourceId, string resourceType, string tokenVersion, DateTime utc, out int bytesWritten)
{
int written, consumed, totalWritten = 0;
bytesWritten = 0;
Span <byte> buffer = stackalloc byte[AuthenticationHeaderBufferSize];
s_type.CopyTo(buffer);
totalWritten += s_type.Length;
var bufferSlice = buffer.Slice(totalWritten);
if (Encodings.Utf16.ToUtf8(keyType.AsReadOnlySpan().AsBytes(), bufferSlice, out consumed, out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
totalWritten += written;
bufferSlice = buffer.Slice(totalWritten);
s_ver.CopyTo(bufferSlice);
totalWritten += s_ver.Length;
bufferSlice = buffer.Slice(totalWritten);
if (Encodings.Utf16.ToUtf8(tokenVersion.AsReadOnlySpan().AsBytes(), bufferSlice, out consumed, out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
totalWritten += written;
bufferSlice = buffer.Slice(totalWritten);
s_sig.CopyTo(bufferSlice);
totalWritten += s_sig.Length;
var front = buffer.Slice(0, totalWritten);
var payload = buffer.Slice(totalWritten);
totalWritten = 0;
if (verb.Equals("GET", StringComparison.Ordinal) || verb.Equals("get", StringComparison.Ordinal))
{
s_get.CopyTo(payload);
totalWritten += s_get.Length;
}
else if (verb.Equals("POST", StringComparison.Ordinal) || verb.Equals("post", StringComparison.Ordinal))
{
s_post.CopyTo(payload);
totalWritten += s_post.Length;
}
else if (verb.Equals("DELETE", StringComparison.Ordinal) || verb.Equals("delete", StringComparison.Ordinal))
{
s_delete.CopyTo(payload);
totalWritten += s_delete.Length;
}
else
{
if (Encodings.Utf16.ToUtf8(verb.AsReadOnlySpan().AsBytes(), payload, out consumed, out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
if (Encodings.Ascii.ToLowerInPlace(payload.Slice(0, written), out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
payload[written] = (byte)'\n';
totalWritten += written + 1;
}
bufferSlice = payload.Slice(totalWritten);
if (Encodings.Utf16.ToUtf8(resourceType.AsReadOnlySpan().AsBytes(), bufferSlice, out consumed, out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
if (Encodings.Ascii.ToLowerInPlace(bufferSlice.Slice(0, written), out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
bufferSlice[written] = (byte)'\n';
totalWritten += written + 1;
bufferSlice = payload.Slice(totalWritten);
if (Encodings.Utf16.ToUtf8(resourceId.AsReadOnlySpan().AsBytes(), bufferSlice, out consumed, out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
bufferSlice[written] = (byte)'\n';
totalWritten += written + 1;
bufferSlice = payload.Slice(totalWritten);
if (!Utf8Formatter.TryFormat(utc, bufferSlice, out written, 'l'))
{
throw new NotImplementedException("need to resize buffer");
}
bufferSlice[written] = (byte)'\n';
totalWritten += written + 1;
bufferSlice = payload.Slice(totalWritten);
bufferSlice[0] = (byte)'\n';
totalWritten += 1;
hash.Append(buffer.Slice(front.Length, totalWritten));
hash.GetHash(buffer.Slice(front.Length, hash.OutputSize));
if (Base64.BytesToUtf8InPlace(buffer.Slice(front.Length), hash.OutputSize, out written) != OperationStatus.Done)
{
throw new NotImplementedException("need to resize buffer");
}
var len = front.Length + written;
if (UrlEncoder.Utf8.Encode(buffer.Slice(0, len), output, out consumed, out bytesWritten) != OperationStatus.Done)
{
bytesWritten = 0;
return(false);
}
return(true);
}
public static bool TryWrite(Span <byte> output, Sha256 hash, string verb, string canonicalizedResource, DateTime utc, out int bytesWritten)
{
int written, consumed;
bytesWritten = 0;
if (verb.Equals("GET", StringComparison.Ordinal))
{
if (output.Length < 3)
{
bytesWritten = 0;
return(false);
}
s_GET.CopyTo(output);
bytesWritten += s_GET.Length;
}
else
{
if (Encodings.Utf16.ToUtf8(verb.AsReadOnlySpan().AsBytes(), output, out consumed, out written) != OperationStatus.Done)
{
bytesWritten = 0;
return(false);
}
output[written] = (byte)'\n';
bytesWritten += written + 1;
}
var free = output.Slice(bytesWritten);
s_emptyHeaders.CopyTo(free);
bytesWritten += s_emptyHeaders.Length;
free = output.Slice(bytesWritten);
if (!Utf8Formatter.TryFormat(utc, free, out written, 'R'))
{
bytesWritten = 0;
return(false);
}
free[written] = (byte)'\n';
bytesWritten += written + 1;
free = output.Slice(bytesWritten);
if (Encodings.Utf16.ToUtf8(canonicalizedResource.AsReadOnlySpan().AsBytes(), free, out consumed, out written) != OperationStatus.Done)
{
bytesWritten = 0;
return(false);
}
bytesWritten += written;
var formatted = output.Slice(0, bytesWritten);
hash.Append(formatted);
hash.GetHash(output.Slice(0, hash.OutputSize));
if (Base64.BytesToUtf8InPlace(output, hash.OutputSize, out written) != OperationStatus.Done)
{
bytesWritten = 0;
return(false);
}
bytesWritten = written;
return(true);
}
