public static async Task <string> ReadStringAsync(this HttpListenerContext context)
{
if (!context.Request.HasEntityBody || context.Request.ContentLength64 == 0)
{
return(null);
}
//NOTE: Mono breaks keep-alive connection on disponsing HttpRequestStream
//using(var stream = request.InputStream)
try
{
//NOTE: Vulnerability #1 part #0: Static pool of request buffers
using (var buffer = await RequestBuffersPool.AcquireAsync())
{
try
{
await
context.Request.InputStream.ReadToBufferAsync(buffer.Item)
.WithTimeout(HttpServerSettings.ReadWriteTimeout) //NOTE: HttpRequestStream is not cancellable with CancellationToken :(
.ConfigureAwait(false);
}
catch (Exception e)
{
context.Close(408);
throw new HttpConnectionClosed(e);
}
//NOTE: Vulnerability #1 part #1: Do NOT rely on Content-Length field!
return(Encoding.UTF8.GetString(buffer.Item, 0, (int)context.Request.ContentLength64));
}
}
finally
{
context.Request.InputStream.Close();
}
}
private static void HandleRequestThread()
{
HttpListenerResponse response = null;
HttpListenerContext context = null;
try
{
lock (m_responseQueue)
{
context = (HttpListenerContext)m_responseQueue.Dequeue();
}
response = context.Response;
HttpListenerRequest request = context.Request;
switch (request.HttpMethod.ToUpper())
{
case "GET": ProcessClientGetRequest(context); break;
case "POST": ProcessClientPostRequest(context); break;
}
}
catch
{
}
finally
{
if (context != null)
{
context.Close();
}
}
}
private static void HandleRequestThread(HttpListenerContext context)
{
try
{
foreach (var httpHandlerObj in HttpHandlers)
{
IHttpHandler httpHandler = httpHandlerObj as IHttpHandler;
httpHandler.ProcessRequest(context);
}
}
catch (HttpException exception)
{
ExceptionHelper.RespondError(context.Response, exception);
}
catch (Exception exception)
{
ExceptionHelper.RespondError(context.Response, exception);
}
finally
{
if (context != null)
{
context.Close();
}
}
}
internal static void RunServer(string prefix)
{
HttpListener listener = new HttpListener(prefix, -1);
// Loads certificate if it is https server.
if (prefix == "https")
{
//
// SKU == 3 indicates the device is the emulator.
//
// The emulator and the device use different certificate types. The emulator requires the use of a .PFX certficate, whereas the device simply
// requires a CER certificate with appended private key. In addtion, the .PFX certificate requires a password ("NetMF").
//
if (Microsoft.SPOT.Hardware.SystemInfo.SystemID.SKU == 3)
{
listener.HttpsCert = new X509Certificate(m_emulatorCertData, "NetMF");
}
else
{
string serverCertAsString = HttpServerSample.Resource1.GetString(HttpServerSample.Resource1.StringResources.cert_device_microsoft_com);
byte[] serverCertAsArray = Encoding.UTF8.GetBytes(serverCertAsString);
listener.HttpsCert = new X509Certificate(serverCertAsArray);
}
}
listener.Start();
while (true)
{
HttpListenerResponse response = null;
HttpListenerContext context = null;
try
{
context = listener.GetContext();
response = context.Response;
HttpListenerRequest request = context.Request;
switch (request.HttpMethod.ToUpper())
{
case "GET": ProcessClientGetRequest(context); break;
case "POST": ProcessClientPostRequest(context); break;
}
if (response != null)
{
response.Close();
}
}
catch
{
if (context != null)
{
context.Close();
}
}
}
}
public static void Main()
{
var networkHerlpers = new NetworkHelpers();
networkHerlpers.SetupAndConnectNetwork(true);
Console.WriteLine("Waiting for network up and IP address...");
NetworkHelpers.IpAddressAvailable.WaitOne();
Console.WriteLine("Waiting for valid Date & Time...");
NetworkHelpers.DateTimeAvailable.WaitOne();
Thread.Sleep(2000);
string prefix = "http";
int port = 80;
Console.WriteLine("* Creating Http Listener: " + prefix + " on port " + port);
HttpListener listener = new HttpListener(prefix, port);
// Start Listener
listener.Start();
// After Starting, several exceptions are thrown
string ips = $"{NetworkInterface.GetAllNetworkInterfaces()[0].IPv4Address}, {NetworkInterface.GetAllNetworkInterfaces()[1].IPv4Address}, {NetworkInterface.GetAllNetworkInterfaces()[2].IPv4Address}";
Console.WriteLine($"Listening for HTTP requests @ {ips}:{port} ...");
while (true)
{
try
{
// now wait on context for a connection
HttpListenerContext context = listener.GetContext();
if (context != null)
{
string url = context.Request.Url.OriginalString;
string remoteHost = context.Request.RemoteEndPoint.Address.ToString();
string responseString = $"<HTML><BODY>Hello world! This is nanoFramework.<br/>CurrentTime:{DateTime.UtcNow.ToString()}<br/>Requested URL:{url}<br/>RemoteHost: {remoteHost}<br/>Server IPs:{ips}</BODY></HTML>";
Console.WriteLine($"Request received: {responseString}");
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
// Get the response stream and write the response content to it
context.Response.ContentLength64 = buffer.Length;
context.Response.OutputStream.Write(buffer, 0, buffer.Length);
// output stream must be closed
context.Response.Close();
// context must be closed
context.Close();
}
}
catch (Exception ex)
{
Console.WriteLine("* Error getting context: " + ex.Message + "\r\nSack = " + ex.StackTrace);
}
}
}
public static void Main()
{
X509Certificate _myWebServerCertificate509 = new X509Certificate2(_myWebServerCrt, _myWebServerPrivateKey, "");
var networkHerlpers = new NetworkHelpers();
networkHerlpers.SetupAndConnectNetwork(true);
Debug.WriteLine("Waiting for network up and IP address...");
NetworkHelpers.IpAddressAvailable.WaitOne();
Debug.WriteLine("Waiting for valid Date & Time...");
NetworkHelpers.DateTimeAvailable.WaitOne();
// setup HTTP response
string responseString = "<HTML><BODY>Hello world! This is nanoFramework.</BODY></HTML>";
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
// Create a listener.
string prefix = "https";
int port = prefix == "http" ? 80 : 443;
Debug.WriteLine("* Creating Http Listener: " + prefix + " on port " + port);
HttpListener listener = new HttpListener(prefix, port);
// assign server certificate
listener.HttpsCert = _myWebServerCertificate509;
listener.SslProtocols = System.Net.Security.SslProtocols.Tls | System.Net.Security.SslProtocols.Tls11 | System.Net.Security.SslProtocols.Tls12;
Debug.WriteLine($"Listening for HTTP requests @ {NetworkInterface.GetAllNetworkInterfaces()[0].IPv4Address}:{port} ...");
listener.Start();
while (true)
{
try
{
// now wait on context for a connection
HttpListenerContext context = listener.GetContext();
// Get the response stream and write the response content to it
context.Response.ContentLength64 = buffer.Length;
context.Response.OutputStream.Write(buffer, 0, buffer.Length);
// output stream must be closed
context.Response.Close();
// context must be closed
context.Close();
}
catch (Exception ex)
{
Debug.WriteLine("* Error getting context: " + ex.Message + "\r\nSack = " + ex.StackTrace);
}
}
}
private void StartWebServer()
{
// izvietot HttpListener objektu uz 80. porta
HttpListener httpListener = new HttpListener("http", 80);
// sakt klausities
httpListener.Start();
HttpListenerContext httpContext = null;
while (true)
{
try
{
// wait for incoming request
// iegut context'u kas satur pieprasijumu
// wait for the incoming request
httpContext = httpListener.GetContext();
if (httpContext == null)
{
continue;
}
// sagatabot atbildi
byte[] response = this.PrepareResponseV3LED(httpContext);
// nosutit atbildi
this.SendResponse(httpContext, response, 202); // 202 - ACCEPTED
}
catch (Exception e)
{
Debug.Print("Error processing listener context: " + e.Message);
}
finally
{
if (httpContext != null)
{
httpContext.Close();
}
}
}
}
public static void Main()
{
X509Certificate _myWebServerCertificate509 = new X509Certificate2(_myWebServerCrt, _myWebServerPrivateKey, "");
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if BUILD_FOR_ESP32
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
// setup HTTP response
string responseString = "<HTML><BODY>Hello world! This is nanoFramework.</BODY></HTML>";
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
// Create a listener.
string prefix = "https";
int port = prefix == "http" ? 80 : 443;
Debug.WriteLine("* Creating Http Listener: " + prefix + " on port " + port);
HttpListener listener = new HttpListener(prefix, port);
// assign server certificate
listener.HttpsCert = _myWebServerCertificate509;
listener.SslProtocols = System.Net.Security.SslProtocols.Tls | System.Net.Security.SslProtocols.Tls11 | System.Net.Security.SslProtocols.Tls12;
Debug.WriteLine($"Listening for HTTP requests @ {NetworkInterface.GetAllNetworkInterfaces()[0].IPv4Address}:{port} ...");
listener.Start();
while (true)
{
try
{
// now wait on context for a connection
HttpListenerContext context = listener.GetContext();
// Get the response stream and write the response content to it
context.Response.ContentLength64 = buffer.Length;
context.Response.OutputStream.Write(buffer, 0, buffer.Length);
// output stream must be closed
context.Response.Close();
// context must be closed
context.Close();
}
catch (Exception ex)
{
Debug.WriteLine("* Error getting context: " + ex.Message + "\r\nSack = " + ex.StackTrace);
}
}
}
private async Task ProcessClient(HttpListenerContext httpContext)
{
string ip = httpContext.GetIP();
// Check authentication
var authResult = auth.Authenticate(httpContext.Request);
if (false == authResult.Success || authResult.ClientID == null)
{
Log.Debug($"Connection from {ip} denied" +
(authResult.ClientID != null ? $" (client ID {authResult.ClientID})" : ""));
httpContext.Close(HttpStatusCode.Unauthorized);
return;
}
string clientID = authResult.ClientID;
// Accept web socket
var clientInfo = RpcPeerInfo.Client(clientID, ip);
WebSocketContext context;
try {
context = await httpContext.AcceptWebSocketAsync(subProtocol : null);
Log.Debug($"Connected {clientInfo}");
} catch (Exception ex) {
Log.Debug($"Could not accept WebSocket to {clientInfo}: {ex.Message}");
httpContext.Close(HttpStatusCode.InternalServerError);
return;
}
// WebSocket loop
WebSocket webSocket = context.WebSocket;
try {
var connection = new WebSocketRpcConnection(clientInfo, webSocket);
var channel = await RpcChannel.Create(clientInfo, connection, this, Settings.Backlog);
if (channelsByClientID.TryGetValue(clientID, out var oldChannel))
{
Log.Debug($"Channel for client {clientID} was already open; close it and open a new one after 3 seconds.");
oldChannel.Stop();
await Task.Delay(3000);
}
channelsByClientID[clientID] = channel;
await channel.Start();
Log.Debug($"Connection to {clientInfo} closed");
} catch (Exception ex) {
if (ex is WebSocketException wsEx)
{
Log.Debug($"Connection to {clientInfo} unexpectedly closed: " + wsEx.WebSocketErrorCode);
}
else
{
Log.Debug($"Connection to {clientInfo} unexpectedly closed: " + ex.Message);
}
} finally {
webSocket?.Dispose();
}
channelsByClientID.Remove(clientID);
}
public void Start(string prefix, int port)
{
if (listener != null)
{
return;
}
listener = new HttpListener(prefix, port);
// Loads certificate if it is https server.
if (prefix == "https")
{
// SKU == 3 indicates the device is the emulator.
// The emulator and the device use different certificate types. The emulator requires the use of a .PFX certficate, whereas the device simply
// requires a CER certificate with appended private key. In addtion, the .PFX certificate requires a password ("NetMF").
if (Utils.IsEmulator)
{
listener.HttpsCert = new X509Certificate(m_emulatorCertData, "NetMF");
}
else
{
string serverCertAsString = Resource1.GetString(Resource1.StringResources.cert_device_microsoft_com);
listener.HttpsCert = new X509Certificate(Encoding.UTF8.GetBytes(serverCertAsString));
}
}
listener.Start();
isStopped = false;
new Thread(() =>
{
while (!isStopped)
{
try
{
if (!listener.IsListening)
{
listener.Start();
}
HttpListenerContext context = listener.GetContext();
// see http://netmf.codeplex.com/workitem/2157
//new Thread(() =>
{
try
{
if (OnRequest != null)
{
OnRequest(context.Request);
}
switch (context.Request.HttpMethod.ToUpper())
{
case "GET": ProcessClientGetRequest(context); break;
case "POST": ProcessClientPostRequest(context); break;
}
// for test:
//SendStream(Encoding.UTF8.GetBytes("<html><body>" + DateTime.Now + "</body></html>"), "text/html", context.Response);
context.Close();
}
catch (Exception e)
{
Debug.Print(e.Message);
}
}
//).Start();
}
//catch (InvalidOperationException ex)
//{
// listener.Stop();
// Thread.Sleep(1000);
//}
//catch (ObjectDisposedException ex)
//{
// listener.Start();
//}
//catch (SocketException ex)
//{
// if (ex.ErrorCode == 10053)
// listener.Stop();
//}
catch (Exception ex)
{
//Thread.Sleep(1000);
//if (context != null)
// context.Close();
}
}
// stopped
listener.Close();
listener = null;
})
{
Priority = ThreadPriority.Normal
}.Start();
}
#pragma warning restore 0649
private static void AddComment(HttpListenerContext client, int categoryIndex)
{
var r = client.Request;
string name = null, email = null, text = null;
int replyTo = -1;
var buf = new byte[r.ContentLength64];
var query = Encoding.UTF8.GetString(buf, 0, r.InputStream.Read(buf, 0, buf.Length));
var param = query.Split('&');
foreach (var p in param)
{
var segments = p.Split(new[] { '=' }, 2);
if (segments.Length < 2)
{
client.Error(HttpStatusCode.BadRequest);
return;
}
var value = Uri.UnescapeDataString(segments[1]).Replace('+', ' ');
if (segments[0] == "name")
{
name = value;
}
else if (segments[0] == "email")
{
email = value;
}
else if (segments[0] == "comment")
{
text = value;
}
else if (segments[0] == "replyTo")
{
replyTo = int.Parse(segments[1]);
}
}
if (name == null || text == null)
{
client.Error(HttpStatusCode.BadRequest);
return;
}
var article = articles[categoryIndex][r.Url.Segments[2]];
var comment = new Comment(name, text, article.CommentCount, replyTo);
if (!Validate(comment, article))
{
client.Error(HttpStatusCode.BadRequest);
return;
}
article.AddComment(comment);
if (client.Request.Url.Query.Contains("returnSelf"))
{
client.WriteAndClose(GenerateCommentHtml(comment, ""), "html", HttpStatusCode.Created);
}
else
{
// This should prevent accidently submitting a form multiple times
client.SetHeader("Location", client.Request.Url);
client.Close(HttpStatusCode.SeeOther);
}
}
/// <summary>
/// Processes a message
/// </summary>
/// <param name="msg">The message being processed.</param>
/// <param name="ctx">The context associated with the message.</param>
/// <returns>The handling status for this operation.</returns>
protected override ChainResult OnProcessOutputMessage(ref WsMessage msg, BindingContext ctx)
{
ArrayList props = ctx.BindingProperties;
byte[] message = null;
string contentType = "text/plain";
if (msg != null)
{
message = msg.Body as byte[];
if (msg.BodyParts != null)
{
contentType = "Multipart/Related;boundary=" +
msg.MtomPropeties.boundary +
";type=\"application/xop+xml\";start=\"" +
msg.MtomPropeties.start +
"\";start-info=\"application/soap+xml\"";
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.Server, "Microsoft-MF HTTP 1.0"));
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.MimeVersion, "1.0"));
ctx.BindingProperties.Add(new BindingProperty("header", HttpKnownHeaderNames.Date, DateTime.Now.ToString()));
}
else
{
contentType = "application/soap+xml; charset=utf-8";
}
}
if (ctx is ClientBindingContext)
{
if (message == null)
{
return(ChainResult.Abort);
}
HttpWebRequest request;
try
{
if (!m_persistConn || ctx.ContextObject == null)
{
request = HttpWebRequest.Create(new Uri(m_transportUri.AbsoluteUri)) as HttpWebRequest;
request.Timeout = (int)(ctx.OpenTimeout.Ticks / TimeSpan.TicksPerMillisecond);
request.ReadWriteTimeout = (int)(ctx.ReceiveTimeout.Ticks / TimeSpan.TicksPerMillisecond);
ctx.ContextObject = request;
}
else
{
request = (HttpWebRequest)ctx.ContextObject;
request.Reset();
}
// Post method
request.Method = "POST";
WebHeaderCollection headers = request.Headers;
request.ContentType = contentType;
request.UserAgent = "MFWsAPI";
request.Headers.Add(HttpKnownHeaderNames.CacheControl, "no-cache");
request.Headers.Add(HttpKnownHeaderNames.Pragma, "no-cache");
if (props != null)
{
int len = props.Count;
for (int i = 0; i < len; i++)
{
BindingProperty prop = (BindingProperty)props[i];
string container = prop.Container;
if (container == "header")
{
headers.Add(prop.Name, (string)prop.Value);
}
else if (container == null || container == "")
{
string name = prop.Name;
if (name == HttpKnownHeaderNames.ContentType)
{
request.ContentType = (string)prop.Value;
}
else if (name == HttpKnownHeaderNames.UserAgent)
{
request.UserAgent = (string)prop.Value;
}
}
}
}
if (message != null)
{
System.Ext.Console.Write("Http message sent: ");
System.Ext.Console.Write(message);
request.ContentLength = message.Length;
using (Stream stream = request.GetRequestStream())
{
// Write soap message
stream.Write(message, 0, message.Length);
// Flush the stream and force a write
stream.Flush();
}
}
}
catch
{
ctx.ContextObject = null;
throw;
}
}
else
{
HttpListenerContext listenerContext = ctx.ContextObject as HttpListenerContext;
if (listenerContext == null)
{
return(ChainResult.Abort);
}
HttpListenerResponse listenerResponse = listenerContext.Response;
if (listenerResponse == null || listenerResponse.OutputStream == null)
{
ctx.ContextObject = null;
return(ChainResult.Abort);
}
try
{
StreamWriter streamWriter = new StreamWriter(listenerResponse.OutputStream);
// Write Header, if message is null write accepted
if (message == null || (msg != null && msg.Header != null && msg.Header.IsFaultMessage))
{
listenerResponse.StatusCode = 202;
}
else
{
listenerResponse.StatusCode = 200;
}
// Check to see it the hosted service is sending mtom
WebHeaderCollection headers = listenerResponse.Headers;
listenerResponse.ContentType = contentType;
bool isChunked = false;
if (props != null)
{
int len = props.Count;
for (int i = 0; i < len; i++)
{
BindingProperty prop = (BindingProperty)props[i];
string container = prop.Container;
string name = prop.Name;
string value = (string)prop.Value;
if (container == "header")
{
if (!isChunked && name == HttpKnownHeaderNames.TransferEncoding && value.ToLower() == "chunked")
{
isChunked = true;
}
headers.Add(name, (string)prop.Value);
}
else if (container == null || container == "")
{
if (name == HttpKnownHeaderNames.ContentType)
{
listenerResponse.ContentType = (string)prop.Value;
System.Ext.Console.Write(HttpKnownHeaderNames.ContentType + ": " + listenerResponse.ContentType);
}
}
}
}
// If chunked encoding is enabled write chunked message else write Content-Length
if (isChunked)
{
// Chunk message
int bufferIndex = 0;
int chunkSize = 0;
int defaultChunkSize = 0xff;
#if DEBUG
byte[] displayBuffer = new byte[defaultChunkSize];
#endif
while (bufferIndex < message.Length)
{
// Calculate chunk size and write to stream
chunkSize = message.Length - bufferIndex < defaultChunkSize ? message.Length - bufferIndex : defaultChunkSize;
streamWriter.WriteLine(chunkSize.ToString("{0:X}"));
System.Ext.Console.Write(chunkSize.ToString("{0:X}"));
// Write chunk
streamWriter.WriteBytes(message, bufferIndex, chunkSize);
streamWriter.WriteLine();
#if DEBUG
Array.Copy(message, bufferIndex, displayBuffer, 0, chunkSize);
System.Ext.Console.Write(displayBuffer, bufferIndex, chunkSize);
#endif
// Adjust buffer index
bufferIndex = bufferIndex + chunkSize;
}
// Write 0 length and blank line
streamWriter.WriteLine("0");
streamWriter.WriteLine();
System.Ext.Console.Write("0");
System.Ext.Console.Write("");
}
else
{
if (message == null)
{
listenerResponse.ContentLength64 = 0;
}
else
{
listenerResponse.ContentLength64 = message.Length;
}
System.Ext.Console.Write("Content Length: " + listenerResponse.ContentLength64);
// If an empty message is returned (i.e. oneway request response) don't send
if (message != null && message.Length > 0)
{
System.Ext.Console.Write(message);
// Write soap message
streamWriter.WriteBytes(message, 0, message.Length);
}
}
// Flush the stream and return
streamWriter.Flush();
}
catch
{
return(ChainResult.Abort);
}
finally
{
if (m_persistConn)
{
listenerResponse.Detach();
}
else
{
listenerContext.Close(ctx.CloseTimeout.Seconds);
ctx.ContextObject = null;
}
}
}
return(ChainResult.Handled);
}
