/// <summary>
/// <para>Creates an array of commands, that will be sent to the server</para>
/// </summary>
protected override PipelineEntry[] BuildCommandsList(WebRequest req)
{
bool resetLoggedInState = false;
FtpWebRequest request = (FtpWebRequest)req;
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this);
}
_responseUri = request.RequestUri;
ArrayList commandList = new ArrayList();
if (request.EnableSsl && !UsingSecureStream)
{
commandList.Add(new PipelineEntry(FormatFtpCommand("AUTH", "TLS")));
// According to RFC we need to re-authorize with USER/PASS after we re-authenticate.
resetLoggedInState = true;
}
if (resetLoggedInState)
{
_loginDirectory = null;
_establishedServerDirectory = null;
_requestedServerDirectory = null;
_currentTypeSetting = string.Empty;
if (_loginState == FtpLoginState.LoggedIn)
{
_loginState = FtpLoginState.LoggedInButNeedsRelogin;
}
}
if (_loginState != FtpLoginState.LoggedIn)
{
Credentials = request.Credentials !.GetCredential(request.RequestUri, "basic");
_welcomeMessage = new StringBuilder();
_exitMessage = new StringBuilder();
string domainUserName = string.Empty;
string password = string.Empty;
if (Credentials != null)
{
domainUserName = Credentials.UserName;
string domain = Credentials.Domain;
if (!string.IsNullOrEmpty(domain))
{
domainUserName = domain + "\\" + domainUserName;
}
password = Credentials.Password;
}
if (domainUserName.Length == 0 && password.Length == 0)
{
domainUserName = "******";
// [SuppressMessage("Microsoft.Security", "CS002:SecretInNextLine", Justification="Suppression approved. Anonymous FTP credential in production code.")]
password = "******";
}
commandList.Add(new PipelineEntry(FormatFtpCommand("USER", domainUserName)));
commandList.Add(new PipelineEntry(FormatFtpCommand("PASS", password), PipelineEntryFlags.DontLogParameter));
// If SSL, always configure data channel encryption after authentication to maximum RFC compatibility. The RFC allows for
// PBSZ/PROT commands to come either before or after the USER/PASS, but some servers require USER/PASS immediately after
// the AUTH TLS command.
if (request.EnableSsl && !UsingSecureStream)
{
commandList.Add(new PipelineEntry(FormatFtpCommand("PBSZ", "0")));
commandList.Add(new PipelineEntry(FormatFtpCommand("PROT", "P")));
}
commandList.Add(new PipelineEntry(FormatFtpCommand("OPTS", "utf8 on")));
commandList.Add(new PipelineEntry(FormatFtpCommand("PWD", null)));
}
GetPathOption getPathOption = GetPathOption.Normal;
if (request.MethodInfo.HasFlag(FtpMethodFlags.DoesNotTakeParameter))
{
getPathOption = GetPathOption.AssumeNoFilename;
}
else if (request.MethodInfo.HasFlag(FtpMethodFlags.ParameterIsDirectory))
{
getPathOption = GetPathOption.AssumeFilename;
}
string requestPath;
string requestDirectory;
string requestFilename;
GetPathInfo(getPathOption, request.RequestUri, out requestPath, out requestDirectory, out requestFilename);
if (requestFilename.Length == 0 && request.MethodInfo.HasFlag(FtpMethodFlags.TakesParameter))
{
throw new WebException(SR.net_ftp_invalid_uri);
}
// We optimize for having the current working directory staying at the login directory. This ensure that
// our relative paths work right and reduces unnecessary CWD commands.
// Usually, we don't change the working directory except for some FTP commands. If necessary,
// we need to reset our working directory back to the login directory.
if (_establishedServerDirectory != null && _loginDirectory != null && _establishedServerDirectory != _loginDirectory)
{
commandList.Add(new PipelineEntry(FormatFtpCommand("CWD", _loginDirectory), PipelineEntryFlags.UserCommand));
_requestedServerDirectory = _loginDirectory;
}
// For most commands, we don't need to navigate to the directory since we pass in the full
// path as part of the FTP protocol command. However, some commands require it.
if (request.MethodInfo.HasFlag(FtpMethodFlags.MustChangeWorkingDirectoryToPath) && requestDirectory.Length > 0)
{
commandList.Add(new PipelineEntry(FormatFtpCommand("CWD", requestDirectory), PipelineEntryFlags.UserCommand));
_requestedServerDirectory = requestDirectory;
}
if (!request.MethodInfo.IsCommandOnly)
{
string requestedTypeSetting = request.UseBinary ? "I" : "A";
if (_currentTypeSetting != requestedTypeSetting)
{
commandList.Add(new PipelineEntry(FormatFtpCommand("TYPE", requestedTypeSetting)));
_currentTypeSetting = requestedTypeSetting;
}
if (request.UsePassive)
{
string passiveCommand = (ServerAddress.AddressFamily == AddressFamily.InterNetwork || ServerAddress.IsIPv4MappedToIPv6) ? "PASV" : "EPSV";
commandList.Add(new PipelineEntry(FormatFtpCommand(passiveCommand, null), PipelineEntryFlags.CreateDataConnection));
}
else
{
string portCommand = (ServerAddress.AddressFamily == AddressFamily.InterNetwork || ServerAddress.IsIPv4MappedToIPv6) ? "PORT" : "EPRT";
CreateFtpListenerSocket(request);
commandList.Add(new PipelineEntry(FormatFtpCommand(portCommand, GetPortCommandLine(request))));
}
if (request.ContentOffset > 0)
{
// REST command must always be the last sent before the main file command is sent.
commandList.Add(new PipelineEntry(FormatFtpCommand("REST", request.ContentOffset.ToString(CultureInfo.InvariantCulture))));
}
}
PipelineEntryFlags flags = PipelineEntryFlags.UserCommand;
if (!request.MethodInfo.IsCommandOnly)
{
flags |= PipelineEntryFlags.GiveDataStream;
if (!request.UsePassive)
{
flags |= PipelineEntryFlags.CreateDataConnection;
}
}
if (request.MethodInfo.Operation == FtpOperation.Rename)
{
string baseDir = (requestDirectory.Length == 0)
? string.Empty : requestDirectory + "/";
commandList.Add(new PipelineEntry(FormatFtpCommand("RNFR", baseDir + requestFilename), flags));
string renameTo;
if (!string.IsNullOrEmpty(request.RenameTo) &&
request.RenameTo.StartsWith("/", StringComparison.OrdinalIgnoreCase))
{
renameTo = request.RenameTo; // Absolute path
}
else
{
renameTo = baseDir + request.RenameTo; // Relative path
}
commandList.Add(new PipelineEntry(FormatFtpCommand("RNTO", renameTo), flags));
}
else if (request.MethodInfo.HasFlag(FtpMethodFlags.DoesNotTakeParameter))
{
commandList.Add(new PipelineEntry(FormatFtpCommand(request.Method, string.Empty), flags));
}
else if (request.MethodInfo.HasFlag(FtpMethodFlags.MustChangeWorkingDirectoryToPath))
{
commandList.Add(new PipelineEntry(FormatFtpCommand(request.Method, requestFilename), flags));
}
else
{
commandList.Add(new PipelineEntry(FormatFtpCommand(request.Method, requestPath), flags));
}
commandList.Add(new PipelineEntry(FormatFtpCommand("QUIT", null)));
return((PipelineEntry[])commandList.ToArray(typeof(PipelineEntry)));
}
private PipelineInstruction QueueOrCreateDataConection(PipelineEntry entry, ResponseDescription response, bool timeout, ref Stream?stream, out bool isSocketReady)
{
isSocketReady = false;
if (_dataHandshakeStarted)
{
isSocketReady = true;
return(PipelineInstruction.Pause); //if we already started then this is re-entering into the callback where we proceed with the stream
}
_dataHandshakeStarted = true;
// Handle passive responses by parsing the port and later doing a Connect(...)
bool isPassive = false;
int port = -1;
if (entry.Command == "PASV\r\n" || entry.Command == "EPSV\r\n")
{
if (!response.PositiveCompletion)
{
_abortReason = SR.Format(SR.net_ftp_server_failed_passive, response.Status);
return(PipelineInstruction.Abort);
}
if (entry.Command == "PASV\r\n")
{
port = GetPortV4(response.StatusDescription !);
}
else
{
port = GetPortV6(response.StatusDescription !);
}
isPassive = true;
}
if (isPassive)
{
Debug.Assert(port != -1, "'port' not set.");
try
{
_dataSocket = CreateFtpDataSocket((FtpWebRequest)_request !, Socket);
}
catch (ObjectDisposedException)
{
throw ExceptionHelper.RequestAbortedException;
}
IPEndPoint localEndPoint = new IPEndPoint(((IPEndPoint)Socket.LocalEndPoint !).Address, 0);
_dataSocket.Bind(localEndPoint);
_passiveEndPoint = new IPEndPoint(ServerAddress, port);
}
PipelineInstruction result;
if (_passiveEndPoint != null)
{
IPEndPoint passiveEndPoint = _passiveEndPoint;
_passiveEndPoint = null;
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, "starting Connect()");
}
if (_isAsync)
{
_dataSocket !.BeginConnect(passiveEndPoint, s_connectCallbackDelegate, this);
result = PipelineInstruction.Pause;
}
else
{
_dataSocket !.Connect(passiveEndPoint);
result = PipelineInstruction.Advance; // for passive mode we end up going to the next command
}
}
else
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, "starting Accept()");
}
if (_isAsync)
{
_dataSocket !.BeginAccept(s_acceptCallbackDelegate, this);
result = PipelineInstruction.Pause;
}
else
{
Socket listenSocket = _dataSocket !;
try
{
_dataSocket = _dataSocket !.Accept();
if (!ServerAddress.Equals(((IPEndPoint)_dataSocket.RemoteEndPoint !).Address))
{
_dataSocket.Close();
throw new WebException(SR.net_ftp_active_address_different, WebExceptionStatus.ProtocolError);
}
isSocketReady = true; // for active mode we end up creating a stream before advancing the pipeline
result = PipelineInstruction.Pause;
}
finally
{
listenSocket.Close();
}
}
}
return(result);
}
protected override bool CheckValid(ResponseDescription response, ref int validThrough, ref int completeLength)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, $"CheckValid({response.StatusBuffer})");
}
// If the response is less than 4 bytes long, it is too short to tell, so return true, valid so far.
if (response.StatusBuffer.Length < 4)
{
return(true);
}
string responseString = response.StatusBuffer.ToString();
// Otherwise, if there is no status code for this response yet, get one.
if (response.Status == ResponseDescription.NoStatus)
{
// If the response does not start with three digits, then it is not a valid response from an FTP server.
if (!(char.IsDigit(responseString[0]) && char.IsDigit(responseString[1]) && char.IsDigit(responseString[2]) && (responseString[3] == ' ' || responseString[3] == '-')))
{
return(false);
}
else
{
response.StatusCodeString = responseString.Substring(0, 3);
response.Status = Convert.ToInt16(response.StatusCodeString, NumberFormatInfo.InvariantInfo);
}
// IF a hyphen follows the status code on the first line of the response, then we have a multiline response coming.
if (responseString[3] == '-')
{
response.Multiline = true;
}
}
// If a complete line of response has been received from the server, then see if the
// overall response is complete.
// If this was not a multiline response, then the response is complete at the end of the line.
// If this was a multiline response (indicated by three digits followed by a '-' in the first line),
// then we see if the last line received started with the same three digits followed by a space.
// If it did, then this is the sign of a complete multiline response.
// If the line contained three other digits followed by the response, then this is a violation of the
// FTP protocol for multiline responses.
// All other cases indicate that the response is not yet complete.
int index = 0;
while ((index = responseString.IndexOf("\r\n", validThrough, StringComparison.Ordinal)) != -1) // gets the end line.
{
int lineStart = validThrough;
validThrough = index + 2; // validThrough now marks the end of the line being examined.
if (!response.Multiline)
{
completeLength = validThrough;
return(true);
}
if (responseString.Length > lineStart + 4)
{
// If the first three characters of the response line currently being examined
// match the status code, then if they are followed by a space, then we
// have reached the end of the reply.
if (responseString.Substring(lineStart, 3) == response.StatusCodeString)
{
if (responseString[lineStart + 3] == ' ')
{
completeLength = validThrough;
return(true);
}
}
}
}
return(true);
}
// This is called by underlying base class code, each time a new response is received from the wire or a protocol stage is resumed.
// This function controls the setting up of a data socket/connection, and of saving off the server responses.
protected override PipelineInstruction PipelineCallback(PipelineEntry?entry, ResponseDescription?response, bool timeout, ref Stream?stream)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, $"Command:{entry?.Command} Description:{response?.StatusDescription}");
}
// null response is not expected
if (response == null)
{
return(PipelineInstruction.Abort);
}
FtpStatusCode status = (FtpStatusCode)response.Status;
//
// Update global "current status" for FtpWebRequest
//
if (status != FtpStatusCode.ClosingControl)
{
// A 221 status won't be reflected on the user FTP response
// Anything else will (by design?)
StatusCode = status;
StatusLine = response.StatusDescription;
}
// If the status code is outside the range defined in RFC (1xx to 5xx) throw
if (response.InvalidStatusCode)
{
throw new WebException(SR.net_InvalidStatusCode, WebExceptionStatus.ProtocolError);
}
// Update the banner message if any, this is a little hack because the "entry" param is null
if (_index == -1)
{
if (status == FtpStatusCode.SendUserCommand)
{
_bannerMessage = new StringBuilder();
_bannerMessage.Append(StatusLine);
return(PipelineInstruction.Advance);
}
else if (status == FtpStatusCode.ServiceTemporarilyNotAvailable)
{
return(PipelineInstruction.Reread);
}
else
{
throw GenerateException(status, response.StatusDescription, null);
}
}
//
// Check for the result of our attempt to use UTF8
//
if (entry !.Command == "OPTS utf8 on\r\n")
{
if (response.PositiveCompletion)
{
Encoding = Encoding.UTF8;
}
else
{
Encoding = Encoding.Default;
}
return(PipelineInstruction.Advance);
}
// If we are already logged in and the server returns 530 then
// the server does not support re-issuing a USER command,
// tear down the connection and start all over again
if (entry.Command.IndexOf("USER", StringComparison.Ordinal) != -1)
{
// The server may not require a password for this user, so bypass the password command
if (status == FtpStatusCode.LoggedInProceed)
{
_loginState = FtpLoginState.LoggedIn;
_index++;
}
}
//
// Throw on an error with possible recovery option
//
if (response.TransientFailure || response.PermanentFailure)
{
if (status == FtpStatusCode.ServiceNotAvailable)
{
MarkAsRecoverableFailure();
}
throw GenerateException(status, response.StatusDescription, null);
}
if (_loginState != FtpLoginState.LoggedIn &&
entry.Command.IndexOf("PASS", StringComparison.Ordinal) != -1)
{
// Note the fact that we logged in
if (status == FtpStatusCode.NeedLoginAccount || status == FtpStatusCode.LoggedInProceed)
{
_loginState = FtpLoginState.LoggedIn;
}
else
{
throw GenerateException(status, response.StatusDescription, null);
}
}
//
// Parse special cases
//
if (entry.HasFlag(PipelineEntryFlags.CreateDataConnection) && (response.PositiveCompletion || response.PositiveIntermediate))
{
bool isSocketReady;
PipelineInstruction result = QueueOrCreateDataConection(entry, response, timeout, ref stream, out isSocketReady);
if (!isSocketReady)
{
return(result);
}
// otherwise we have a stream to create
}
//
// This is part of the above case and it's all about giving data stream back
//
if (status == FtpStatusCode.OpeningData || status == FtpStatusCode.DataAlreadyOpen)
{
if (_dataSocket == null)
{
return(PipelineInstruction.Abort);
}
if (!entry.HasFlag(PipelineEntryFlags.GiveDataStream))
{
_abortReason = SR.Format(SR.net_ftp_invalid_status_response, status, entry.Command);
return(PipelineInstruction.Abort);
}
// Parse out the Content length, if we can
TryUpdateContentLength(response.StatusDescription !);
// Parse out the file name, when it is returned and use it for our ResponseUri
FtpWebRequest request = (FtpWebRequest)_request !;
if (request.MethodInfo.ShouldParseForResponseUri)
{
TryUpdateResponseUri(response.StatusDescription !, request);
}
return(QueueOrCreateFtpDataStream(ref stream));
}
//
// Parse responses by status code exclusivelly
//
// Update welcome message
if (status == FtpStatusCode.LoggedInProceed)
{
_welcomeMessage !.Append(StatusLine);
}
// OR set the user response ExitMessage
else if (status == FtpStatusCode.ClosingControl)
{
_exitMessage !.Append(response.StatusDescription);
// And close the control stream socket on "QUIT"
CloseSocket();
}
// OR set us up for SSL/TLS, after this we'll be writing securely
else if (status == FtpStatusCode.ServerWantsSecureSession)
{
// If NetworkStream is a TlsStream, then this must be in the async callback
// from completing the SSL handshake.
// So just let the pipeline continue.
if (!(NetworkStream is TlsStream))
{
FtpWebRequest request = (FtpWebRequest)_request !;
TlsStream tlsStream = new TlsStream(NetworkStream, Socket, request.RequestUri.Host, request.ClientCertificates);
if (_isAsync)
{
tlsStream.BeginAuthenticateAsClient(ar =>
{
try
{
tlsStream.EndAuthenticateAsClient(ar);
NetworkStream = tlsStream;
this.ContinueCommandPipeline();
}
catch (Exception e)
{
this.CloseSocket();
this.InvokeRequestCallback(e);
}
}, null);
return(PipelineInstruction.Pause);
}
else
{
tlsStream.AuthenticateAsClient();
NetworkStream = tlsStream;
}
}
}
// OR parse out the file size or file time, usually a result of sending SIZE/MDTM commands
else if (status == FtpStatusCode.FileStatus)
{
if (entry.Command.StartsWith("SIZE ", StringComparison.Ordinal))
{
_contentLength = GetContentLengthFrom213Response(response.StatusDescription !);
}
else if (entry.Command.StartsWith("MDTM ", StringComparison.Ordinal))
{
_lastModified = GetLastModifiedFrom213Response(response.StatusDescription !);
}
}
// OR parse out our login directory
else if (status == FtpStatusCode.PathnameCreated)
{
if (entry.Command == "PWD\r\n" && !entry.HasFlag(PipelineEntryFlags.UserCommand))
{
_loginDirectory = GetLoginDirectory(response.StatusDescription !);
}
}
// Asserting we have some positive response
else
{
// We only use CWD to reset ourselves back to the login directory.
if (entry.Command.IndexOf("CWD", StringComparison.Ordinal) != -1)
{
_establishedServerDirectory = _requestedServerDirectory;
}
}
// Intermediate responses require rereading
if (response.PositiveIntermediate || (!UsingSecureStream && entry.Command == "AUTH TLS\r\n"))
{
return(PipelineInstruction.Reread);
}
return(PipelineInstruction.Advance);
}
private bool CaptureOrComplete(ref ExecutionContext?cachedContext, bool returnContext)
{
if ((_flags & StateFlags.PostBlockStarted) == 0)
{
NetEventSource.Fail(this, "Called without calling StartPostingAsyncOp.");
}
// See if we're going to need to capture the context.
bool capturingContext = AsyncCallback != null || (_flags & StateFlags.CaptureContext) != 0;
// Peek if we've already completed, but don't fix CompletedSynchronously yet
// Capture the identity if requested, unless we're going to capture the context anyway, unless
// capturing the context won't be sufficient.
if ((_flags & StateFlags.CaptureIdentity) != 0 && !InternalPeekCompleted && (!capturingContext))
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "starting identity capture");
}
SafeCaptureIdentity();
}
// No need to flow if there's no callback, unless it's been specifically requested.
// Note that Capture() can return null, for example if SuppressFlow() is in effect.
if (capturingContext && !InternalPeekCompleted)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "starting capture");
}
if (cachedContext == null)
{
cachedContext = ExecutionContext.Capture();
}
if (cachedContext != null)
{
if (!returnContext)
{
_context = cachedContext;
cachedContext = null;
}
else
{
_context = cachedContext;
}
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"_context:{_context}");
}
}
else
{
// Otherwise we have to have completed synchronously, or not needed the context.
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Skipping capture");
}
cachedContext = null;
if (AsyncCallback != null && !CompletedSynchronously)
{
NetEventSource.Fail(this, "Didn't capture context, but didn't complete synchronously!");
}
}
// Now we want to see for sure what to do. We might have just captured the context for no reason.
// This has to be the first time the state has been queried "for real" (apart from InvokeCallback)
// to guarantee synchronization with Complete() (otherwise, Complete() could try to call the
// callback without the context having been gotten).
DebugProtectState(false);
if (CompletedSynchronously)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Completing synchronously");
}
base.Complete(IntPtr.Zero);
return(true);
}
return(false);
}
/// Pipelined command resolution.
/// How this works:
/// A list of commands that need to be sent to the FTP server are spliced together into an array,
/// each command such STOR, PORT, etc, is sent to the server, then the response is parsed into a string,
/// with the response, the delegate is called, which returns an instruction (either continue, stop, or read additional
/// responses from server).
protected Stream?ContinueCommandPipeline()
{
// In async case, The BeginWrite can actually result in a
// series of synchronous completions that eventually close
// the connection. So we need to save the members that
// we need to access, since they may not be valid after
// BeginWrite returns
bool isAsync = _isAsync;
while (_index < _commands !.Length)
{
if (_doSend)
{
if (_index < 0)
{
throw new InternalException();
}
byte[] sendBuffer = Encoding.GetBytes(_commands[_index].Command);
if (NetEventSource.Log.IsEnabled())
{
string sendCommand = _commands[_index].Command.Substring(0, _commands[_index].Command.Length - 2);
if (_commands[_index].HasFlag(PipelineEntryFlags.DontLogParameter))
{
int index = sendCommand.IndexOf(' ');
if (index != -1)
{
sendCommand = string.Concat(sendCommand.AsSpan(0, index), " ********");
}
}
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, $"Sending command {sendCommand}");
}
}
try
{
if (isAsync)
{
BeginWrite(sendBuffer, 0, sendBuffer.Length, s_writeCallbackDelegate, this);
}
else
{
Write(sendBuffer, 0, sendBuffer.Length);
}
}
catch (IOException)
{
MarkAsRecoverableFailure();
throw;
}
catch
{
throw;
}
if (isAsync)
{
return(null);
}
}
Stream?stream = null;
bool isReturn = PostSendCommandProcessing(ref stream);
if (isReturn)
{
return(stream);
}
}
lock (this)
{
Close();
}
return(null);
}
// IO COMPLETION CALLBACK
//
// This callback is responsible for getting the complete protocol frame.
// 1. it reads the header.
// 2. it determines the frame size.
// 3. loops while not all frame received or an error.
//
private void ReadFrameComplete(IAsyncResult transportResult)
{
do
{
if (!(transportResult.AsyncState is WorkerAsyncResult))
{
NetEventSource.Fail(this, $"The state expected to be WorkerAsyncResult, received {transportResult}.");
}
WorkerAsyncResult workerResult = (WorkerAsyncResult)transportResult.AsyncState !;
int bytesRead = TaskToApm.End <int>(transportResult);
workerResult.Offset += bytesRead;
if (!(workerResult.Offset <= workerResult.End))
{
NetEventSource.Fail(this, $"WRONG: offset - end = {workerResult.Offset - workerResult.End}");
}
if (bytesRead <= 0)
{
// (by design) This indicates the stream has receives EOF
// If we are in the middle of a Frame - fail, otherwise - produce EOF
object?result = null;
if (!workerResult.HeaderDone && workerResult.Offset == 0)
{
result = (object)-1;
}
else
{
result = new System.IO.IOException(SR.net_frame_read_io);
}
workerResult.InvokeCallback(result);
return;
}
if (workerResult.Offset >= workerResult.End)
{
if (!workerResult.HeaderDone)
{
workerResult.HeaderDone = true;
// This indicates the header has been read successfully
_curReadHeader.CopyFrom(workerResult.Buffer !, 0, _readVerifier);
int payloadSize = _curReadHeader.PayloadSize;
if (payloadSize < 0)
{
// Let's call user callback and they call us back and we will throw
workerResult.InvokeCallback(new System.IO.IOException(SR.net_frame_read_size));
}
if (payloadSize == 0)
{
// report empty frame (NOT eof!) to the caller, he might be interested in
workerResult.InvokeCallback(0);
return;
}
if (payloadSize > _curReadHeader.MaxMessageSize)
{
throw new InvalidOperationException(SR.Format(SR.net_frame_size,
_curReadHeader.MaxMessageSize.ToString(NumberFormatInfo.InvariantInfo),
payloadSize.ToString(NumberFormatInfo.InvariantInfo)));
}
// Start reading the remaining frame data (note header does not count).
byte[] frame = new byte[payloadSize];
// Save the ref of the data block
workerResult.Buffer = frame;
workerResult.End = frame.Length;
workerResult.Offset = 0;
// Transport.ReadAsync below will pickup those changes.
}
else
{
workerResult.HeaderDone = false; // Reset for optional object reuse.
workerResult.InvokeCallback(workerResult.End);
return;
}
}
// This means we need more data to complete the data block.
transportResult = TaskToApm.Begin(_transport.ReadAsync(workerResult.Buffer !, workerResult.Offset, workerResult.End - workerResult.Offset),
_readFrameCallback, workerResult);
} while (transportResult.CompletedSynchronously);
}
private void Initialize(bool isServer, string package, NetworkCredential credential, string spn, Interop.SspiCli.ContextFlags requestedContextFlags, ChannelBinding channelBinding)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("NTAuthentication#" + LoggingHash.HashString(this) + "::.ctor() package:" + LoggingHash.ObjectToString(package) + " spn:" + LoggingHash.ObjectToString(spn) + " flags :" + requestedContextFlags.ToString());
}
_tokenSize = SSPIWrapper.GetVerifyPackageInfo(GlobalSSPI.SSPIAuth, package, true).MaxToken;
_isServer = isServer;
_spn = spn;
_securityContext = null;
_requestedContextFlags = requestedContextFlags;
_package = package;
_channelBinding = channelBinding;
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("Peer SPN-> '" + _spn + "'");
}
//
// Check if we're using DefaultCredentials.
//
Debug.Assert(CredentialCache.DefaultCredentials == CredentialCache.DefaultNetworkCredentials);
if (credential == CredentialCache.DefaultCredentials)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("NTAuthentication#" + LoggingHash.HashString(this) + "::.ctor(): using DefaultCredentials");
}
_credentialsHandle = SSPIWrapper.AcquireDefaultCredential(
GlobalSSPI.SSPIAuth,
package,
(_isServer ? Interop.SspiCli.CredentialUse.Inbound : Interop.SspiCli.CredentialUse.Outbound));
}
else
{
unsafe
{
SafeSspiAuthDataHandle authData = null;
try
{
Interop.SecurityStatus result = Interop.SspiCli.SspiEncodeStringsAsAuthIdentity(
credential.UserName, credential.Domain,
credential.Password, out authData);
if (result != Interop.SecurityStatus.OK)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.PrintError(
NetEventSource.ComponentType.Security,
SR.Format(
SR.net_log_operation_failed_with_error,
"SspiEncodeStringsAsAuthIdentity()",
String.Format(CultureInfo.CurrentCulture, "0x{0:X}", (int)result)));
}
throw new Win32Exception((int)result);
}
_credentialsHandle = SSPIWrapper.AcquireCredentialsHandle(GlobalSSPI.SSPIAuth,
package, (_isServer ? Interop.SspiCli.CredentialUse.Inbound : Interop.SspiCli.CredentialUse.Outbound), ref authData);
}
finally
{
if (authData != null)
{
authData.Dispose();
}
}
}
}
}
internal HttpResponseStreamAsyncResult(object asyncObject, object?userState, AsyncCallback?callback, byte[] buffer, int offset, int size, bool chunked, bool sentHeaders, ThreadPoolBoundHandle boundHandle) : base(asyncObject, userState, callback)
{
_boundHandle = boundHandle;
_sentHeaders = sentHeaders;
if (size == 0)
{
_dataChunks = null;
_pOverlapped = boundHandle.AllocateNativeOverlapped(s_IOCallback, state: this, pinData: null);
}
else
{
_dataChunks = new Interop.HttpApi.HTTP_DATA_CHUNK[chunked ? 3 : 1];
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Info(this, "m_pOverlapped:0x" + ((IntPtr)_pOverlapped).ToString("x8"));
}
object[] objectsToPin = new object[1 + _dataChunks.Length];
objectsToPin[_dataChunks.Length] = _dataChunks;
int chunkHeaderOffset = 0;
byte[]? chunkHeaderBuffer = null;
if (chunked)
{
chunkHeaderBuffer = GetChunkHeader(size, out chunkHeaderOffset);
_dataChunks[0] = default;
_dataChunks[0].DataChunkType = Interop.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
_dataChunks[0].BufferLength = (uint)(chunkHeaderBuffer.Length - chunkHeaderOffset);
objectsToPin[0] = chunkHeaderBuffer;
_dataChunks[1] = default;
_dataChunks[1].DataChunkType = Interop.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
_dataChunks[1].BufferLength = (uint)size;
objectsToPin[1] = buffer;
_dataChunks[2] = default;
_dataChunks[2].DataChunkType = Interop.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
_dataChunks[2].BufferLength = (uint)s_CRLFArray.Length;
objectsToPin[2] = s_CRLFArray;
}
else
{
_dataChunks[0] = default;
_dataChunks[0].DataChunkType = Interop.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
_dataChunks[0].BufferLength = (uint)size;
objectsToPin[0] = buffer;
}
// This call will pin needed memory
_pOverlapped = boundHandle.AllocateNativeOverlapped(s_IOCallback, state: this, pinData: objectsToPin);
if (chunked)
{
_dataChunks[0].pBuffer = (byte *)(Marshal.UnsafeAddrOfPinnedArrayElement(chunkHeaderBuffer !, chunkHeaderOffset));
_dataChunks[1].pBuffer = (byte *)(Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset));
_dataChunks[2].pBuffer = (byte *)(Marshal.UnsafeAddrOfPinnedArrayElement(s_CRLFArray, 0));
}
else
{
_dataChunks[0].pBuffer = (byte *)(Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset));
}
}
}
