public static dynamic Decode(RequestStream ioStream)
{
int length = (int)ioStream.Length;
byte[] data = new byte[length];
ioStream.Read(data, 0, length);
return(JsonConvert.DeserializeObject <dynamic>(System.Text.Encoding.Default.GetString(data)));
}
/// <summary>
/// Modifies our application startup to enable CSRF, and reparse thrown exceptions into messages and status codes.
/// </summary>
/// <remarks>
/// To use this functionality, within every 'form' block, after all the inputs add '@Html.AntiForgeryToken()'.
/// Then, within your POST reception, call 'this.ValidateCsrfToken();, catch the CsrfValidationException, and handle the result appropriately.
/// </remarks>
protected override void ApplicationStartup(TinyIoCContainer container, IPipelines pipelines)
{
base.ApplicationStartup(container, pipelines);
Csrf.Enable(pipelines);
pipelines.BeforeRequest += (ctx) =>
{
NancyContext context = ctx as NancyContext;
logger.Info(context.Request.UserHostAddress + ": " + context.Request.Url);
if (Global.SystemStats.AddCall(context.Request.UserHostAddress))
{
logger.Info($"Throttling a request from {context.Request.UserHostAddress}");
return(this.GenerateJsonException(new ExcessiveQueriesException(), HttpStatusCode.TooManyRequests));
}
// Technically this is 7.4% over 1 MiB. I'm not going to be pedantic.
int maxIterations = 12;
int hundredKiB = 100 * 1024;
byte[] hundredK = new byte[hundredKiB];
RequestStream requestStream = context.Request.Body;
for (int i = 0; i < maxIterations; i++)
{
// This unfortunately means we're processing the request stream twice.
if (requestStream.Read(hundredK, 0, hundredKiB) != hundredKiB)
{
// The request is under 1 MiB, so continue processing. Reset the stream so deserializing the JSON works.
requestStream.Seek(0, SeekOrigin.Begin);
return(null);
}
}
logger.Info($"Request from {context.Request.UserHostAddress} to {context.Request.Url} over 1 MiB");
return(this.GenerateJsonException(new ExcessiveNapackException(), HttpStatusCode.BadRequest));
};
StaticConfiguration.DisableErrorTraces = false;
pipelines.OnError += (context, exception) =>
{
HttpStatusCode code = HttpStatusCode.InternalServerError;
Exception parsedException = exception as Exception;
if (parsedException != null)
{
if (!exceptionStatusCodeMapping.TryGetValue(parsedException.GetType(), out code))
{
code = HttpStatusCode.InternalServerError;
}
}
else
{
parsedException = new Exception("Unable to decode the detected exception!");
}
logger.Warn($"Hit a {parsedException.GetType()} exception: {parsedException.Message}");
return(this.GenerateJsonException(parsedException, code));
};
}
public static T DecodeFromSnakeCase <T>(RequestStream ioStream)
{
var length = (int)ioStream.Length;
var data = new byte[length];
ioStream.Read(data, 0, length);
return(JsonConvert.DeserializeObject <T>(Encoding.Default.GetString(data), new JsonSerializerSettings
{
ContractResolver = new SnakeCaseContractResolver()
}));
}
public SignModule() : base("api/v1")
{
Post["/checksign"] = _ =>
{
RequestStream requestStream = this.Request.Body;
byte[] bytes = new byte[requestStream.Length];
requestStream.Read(bytes, 0, (int)requestStream.Length);
string jsonString = Encoding.UTF8.GetString(bytes);
PayData payData = new PayData();
payData.FromJson(jsonString);
return(payData.CheckSign(key));
};
}
public GossipModule()
{
Post["/chat/{id}"] = _ =>
{
User user = UserManager.get().getShortUser(_.id);
if (user == null)
{
//HeadResponse response = new HeadResponse(Response.Context.Response);
//response.StatusCode = HttpStatusCode.BadRequest;
//response.ReasonPhrase = _.id + " is not a valid user at this endpoint.";
return(HttpStatusCode.BadRequest);
}
RequestStream requestStream = Request.Body;
int requestLength = (int)requestStream.Length;
byte[] requestBytes = new byte[requestLength];
requestStream.Read(requestBytes, 0, requestLength);
string requestBody = System.Text.Encoding.Default.GetString(requestBytes);
WantMessage want = JsonConvert.DeserializeObject <WantMessage>(requestBody);
RumorMessage rumor = JsonConvert.DeserializeObject <RumorMessage>(requestBody);
if (VerifyRumor(rumor) && !user.MessageState.ReceivedMessages.Contains(rumor))
{
if (!user.Neighbors.Contains(new Peer {
Endpoint = rumor.EndPoint
}))
{
user.AddPeer(rumor.EndPoint);
}
user.MessageState.AddMessage(rumor);
}
else if (VerifyWant(want))
{
if (!user.Neighbors.Contains(new Peer {
Endpoint = rumor.EndPoint
}))
{
user.AddPeer(rumor.EndPoint);
}
List <RumorMessage> missingMessages = user.MessageState.GetMissingRumors(want.WantList);
foreach (RumorMessage mm in missingMessages)
{
mm.EndPoint = user.Endpoint;
bool success = Sender.SendMessage(want.EndPoint, mm);
if (success)
{
user.MessageState.AddSentTo(want.EndPoint, mm);
}
}
}
else
{
//HeadResponse response = new HeadResponse(Response.Context.Response);
//response.StatusCode = HttpStatusCode.BadRequest;
//response.ReasonPhrase = "The following is not a valid request body:\n" + requestBody;
return(HttpStatusCode.BadRequest);
}
// this is the endpoint that external nodes will use
// it must implement the following algorithm:
/*
* t = getMessage();
* if ( isRumor(t) ) {
* store(t)
* } elsif ( isWant(t) ) {
* work_queue = addWorkToQueue(t)
* foreach w work_queue {
* s = prepareMsg(state, w)
* <url> = getUrl(w)
* send(<url>, s)
* state = update(state, s)
* }
* }
*/
return(HttpStatusCode.OK);
};
Get["/timer/{milliseconds}"] = _ =>
{
int repeatMilliSeconds = (int)_.milliseconds;
GossipLoop.ChangeLoopTime(repeatMilliSeconds);
return(null);
};
}
