public void JwtSignatureDecode(string base64, int length, byte first, byte fiftyOneth, byte last)
{
var decode = Base64Url.Decode(base64);
var bytes = new UTF8Encoding(false).GetBytes(decode);
bytes.Length.Should().Be(length);
bytes.First().Should().Be(first);
bytes.Skip(51).First().Should().Be(fiftyOneth);
bytes.Last().Should().Be(last);
}
public async Task VerifyChecksumAsync_Data_Is_Truncated_If_Verification_Fails_Using_Single_Chunk()
{
// Checksum is for "hello world"
const string incorrectChecksum = "Kq5sNclPz7QV2+lfQIuc6R7oRu0=";
const string message = "Hello World 12345!!@@åäö";
var buffer = new UTF8Encoding(false).GetBytes(message);
var bytesWritten = 0L;
var fileId = await _fixture.Store.CreateFileAsync(buffer.Length, null, CancellationToken.None);
// Emulate several requests
do
{
// Create a new store and cancellation token source on each request as one would do in a real scenario.
_fixture.CreateNewStore();
var cts = new CancellationTokenSource();
var requestStream = new RequestStreamFake(
(stream, bufferToFill, offset, count, ct) =>
{
// Emulate that the request completed
if (bytesWritten == buffer.Length)
{
return(Task.FromResult(0));
}
// Emulate client disconnect after two bytes read.
if (stream.Position == 2)
{
cts.Cancel();
cts.Token.ThrowIfCancellationRequested();
}
bytesWritten += 2;
return(stream.ReadBackingStreamAsync(bufferToFill, offset, 2, ct));
},
buffer.Skip((int)bytesWritten).ToArray());
await ClientDisconnectGuard.ExecuteAsync(
() => _fixture.Store.AppendDataAsync(fileId, requestStream, cts.Token),
cts.Token);
} while (bytesWritten < buffer.Length);
var checksumOk = await _fixture.Store
.VerifyChecksumAsync(fileId, "sha1", Convert.FromBase64String(incorrectChecksum), CancellationToken.None);
// File should not have been saved.
checksumOk.ShouldBeFalse();
var filePath = Path.Combine(_fixture.Path, fileId);
new FileInfo(filePath).Length.ShouldBe(0);
}
public async Task VerifyChecksumAsync_Data_Is_Truncated_If_Verification_Fails()
{
// Checksum is for "hello world"
const string incorrectChecksum = "Kq5sNclPz7QV2+lfQIuc6R7oRu0=";
const string message = "Hello World 12345!!@@åäö";
var buffer = new UTF8Encoding(false).GetBytes(message);
// Test complete upload
var fileId = await _fixture.Store.CreateFileAsync(buffer.Length, null, CancellationToken.None);
using (var stream = new MemoryStream(buffer))
{
await _fixture.Store.AppendDataAsync(fileId, stream, CancellationToken.None);
}
var checksumOk = await _fixture.Store
.VerifyChecksumAsync(fileId, "sha1", Convert.FromBase64String(incorrectChecksum), CancellationToken.None);
// File should not have been saved.
checksumOk.ShouldBeFalse();
var filePath = Path.Combine(_fixture.Path, fileId);
new FileInfo(filePath).Length.ShouldBe(0);
// Test chunked upload
fileId = await _fixture.Store.CreateFileAsync(buffer.Length, null, CancellationToken.None);
using (var stream = new MemoryStream(buffer.Take(10).ToArray()))
{
// Write first 10 bytes
await _fixture.Store.AppendDataAsync(fileId, stream, CancellationToken.None);
}
using (var stream = new MemoryStream(buffer.Skip(10).ToArray()))
{
// Skip first 10 bytes and write the rest
await _fixture.Store.AppendDataAsync(fileId, stream, CancellationToken.None);
}
checksumOk = await _fixture.Store.VerifyChecksumAsync(fileId, "sha1", Convert.FromBase64String(incorrectChecksum),
CancellationToken.None);
// Only first chunk should have been saved.
checksumOk.ShouldBeFalse();
filePath = Path.Combine(_fixture.Path, fileId);
new FileInfo(filePath).Length.ShouldBe(10);
}