internal static int Decrypt(
SafeDeleteContext securityContext,
byte[] buffer,
int offset,
int count,
bool isConfidential,
bool isNtlm,
out int newOffset,
uint sequenceNumber)
{
if (offset < 0 || offset > (buffer == null ? 0 : buffer.Length))
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Assert("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Decrypt", "Argument 'offset' out of range.");
}
Debug.Fail("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Decrypt", "Argument 'offset' out of range.");
throw new ArgumentOutOfRangeException(nameof(offset));
}
if (count < 0 || count > (buffer == null ? 0 : buffer.Length - offset))
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Assert("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Decrypt", "Argument 'count' out of range.");
}
Debug.Fail("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Decrypt", "Argument 'count' out of range.");
throw new ArgumentOutOfRangeException(nameof(count));
}
if (isNtlm)
{
return(DecryptNtlm(securityContext, buffer, offset, count, isConfidential, out newOffset, sequenceNumber));
}
//
// Kerberos and up
//
var securityBuffer = new SecurityBuffer[2];
securityBuffer[0] = new SecurityBuffer(buffer, offset, count, SecurityBufferType.Stream);
securityBuffer[1] = new SecurityBuffer(0, SecurityBufferType.Data);
int errorCode;
if (isConfidential)
{
errorCode = SSPIWrapper.DecryptMessage(GlobalSSPI.SSPIAuth, securityContext, securityBuffer, sequenceNumber);
}
else
{
errorCode = SSPIWrapper.VerifySignature(GlobalSSPI.SSPIAuth, securityContext, securityBuffer, sequenceNumber);
}
if (errorCode != 0)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("NTAuthentication#" + "::Decrypt() throw Error = " + errorCode.ToString("x", NumberFormatInfo.InvariantInfo));
}
throw new Win32Exception(errorCode);
}
if (securityBuffer[1].type != SecurityBufferType.Data)
{
throw new InternalException();
}
newOffset = securityBuffer[1].offset;
return(securityBuffer[1].size);
}
public void LogRemainingOperations()
{
Interlocked.MemoryBarrier();
GlobalLog.Print("InnerSafeCloseSocket: Releasing with pending operations: " + _refCount);
}
/*++
* VerifyRemoteCertificate - Validates the content of a Remote Certificate
*
* checkCRL if true, checks the certificate revocation list for validity.
* checkCertName, if true checks the CN field of the certificate
* --*/
//This method validates a remote certificate.
//SECURITY: The scenario is allowed in semitrust StorePermission is asserted for Chain.Build
// A user callback has unique signature so it is safe to call it under permission assert.
//
internal bool VerifyRemoteCertificate(RemoteCertValidationCallback remoteCertValidationCallback)
{
GlobalLog.Enter("SecureChannel#" + Logging.HashString(this) + "::VerifyRemoteCertificate");
SslPolicyErrors sslPolicyErrors = SslPolicyErrors.None;
// We don't catch exceptions in this method, so it's safe for "accepted" be initialized with true.
bool success = false;
X509Chain chain = null;
X509Certificate2 remoteCertificateEx = null;
try
{
X509Certificate2Collection remoteCertificateStore;
remoteCertificateEx = CertWrapper.GetRemoteCertificate(_securityContext, out remoteCertificateStore);
_isRemoteCertificateAvailable = remoteCertificateEx != null;
if (remoteCertificateEx == null)
{
GlobalLog.Leave("SecureChannel#" + Logging.HashString(this) + "::VerifyRemoteCertificate (no remote cert)", (!_remoteCertRequired).ToString());
sslPolicyErrors |= SslPolicyErrors.RemoteCertificateNotAvailable;
}
else
{
chain = new X509Chain();
chain.ChainPolicy.RevocationMode = _checkCertRevocation ? X509RevocationMode.Online : X509RevocationMode.NoCheck;
chain.ChainPolicy.RevocationFlag = X509RevocationFlag.ExcludeRoot;
if (remoteCertificateStore != null)
{
chain.ChainPolicy.ExtraStore.AddRange(remoteCertificateStore);
}
// Don't call chain.Build here in the common code, because the Windows version
// is potentially going to check for GetLastWin32Error, and that call needs to be
// guaranteed to be right after the call to chain.Build.
sslPolicyErrors |= CertWrapper.VerifyCertificateProperties(
chain,
remoteCertificateEx,
_checkCertName,
_serverMode,
_hostName);
}
if (remoteCertValidationCallback != null)
{
success = remoteCertValidationCallback(_hostName, remoteCertificateEx, chain, sslPolicyErrors);
}
else
{
if (sslPolicyErrors == SslPolicyErrors.RemoteCertificateNotAvailable && !_remoteCertRequired)
{
success = true;
}
else
{
success = (sslPolicyErrors == SslPolicyErrors.None);
}
}
if (Logging.On)
{
if (sslPolicyErrors != SslPolicyErrors.None)
{
Logging.PrintInfo(Logging.Web, this, SR.net_log_remote_cert_has_errors);
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateNotAvailable) != 0)
{
Logging.PrintInfo(Logging.Web, this, "\t" + SR.net_log_remote_cert_not_available);
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateNameMismatch) != 0)
{
Logging.PrintInfo(Logging.Web, this, "\t" + SR.net_log_remote_cert_name_mismatch);
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateChainErrors) != 0)
{
foreach (X509ChainStatus chainStatus in chain.ChainStatus)
{
Logging.PrintInfo(Logging.Web, this, "\t" + chainStatus.StatusInformation);
}
}
}
if (success)
{
if (remoteCertValidationCallback != null)
{
Logging.PrintInfo(Logging.Web, this, SR.net_log_remote_cert_user_declared_valid);
}
else
{
Logging.PrintInfo(Logging.Web, this, SR.net_log_remote_cert_has_no_errors);
}
}
else
{
if (remoteCertValidationCallback != null)
{
Logging.PrintInfo(Logging.Web, this, SR.net_log_remote_cert_user_declared_invalid);
}
}
}
GlobalLog.Print("Cert Validation, remote cert = " + (remoteCertificateEx == null ? "<null>" : remoteCertificateEx.ToString(true)));
}
finally
{
// At least on Win2k server the chain is found to have dependencies on the original cert context.
// So it should be closed first.
if (chain != null)
{
chain.Dispose();
}
if (remoteCertificateEx != null)
{
remoteCertificateEx.Dispose();
}
}
GlobalLog.Leave("SecureChannel#" + Logging.HashString(this) + "::VerifyRemoteCertificate", success.ToString());
return(success);
}
/// <include file='doc\NetworkStream.uex' path='docs/doc[@for="NetworkStream.Close"]/*' />
/// <devdoc>
/// <para>
/// Closes the stream, and then closes the underlying socket.
/// </para>
/// </devdoc>
public override void Close()
{
GlobalLog.Print("NetworkStream::Close()");
((IDisposable)this).Dispose();
}
//
// The app is calling this method after starting an SSL handshake.
//
// ATTN: The thumbPrint must be from inspected and possibly cloned user Cert object or we get a security hole in SslCredKey ctor.
//
internal static void CacheCredential(SafeFreeCredentials creds, byte[] thumbPrint, SslProtocols sslProtocols, bool isServer, EncryptionPolicy encryptionPolicy)
{
GlobalLog.Assert(creds != null, "CacheCredential|creds == null");
if (creds.IsInvalid)
{
GlobalLog.Print("CacheCredential() Refused to cache an Invalid Handle = " + creds.ToString() + ", Current Cache Count = " + s_CachedCreds.Count);
return;
}
object key = new SslCredKey(thumbPrint, (int)sslProtocols, isServer, encryptionPolicy);
SafeCredentialReference cached = s_CachedCreds[key] as SafeCredentialReference;
if (cached == null || cached.IsClosed || cached.Target.IsInvalid)
{
lock (s_CachedCreds)
{
cached = s_CachedCreds[key] as SafeCredentialReference;
if (cached == null || cached.IsClosed)
{
cached = SafeCredentialReference.CreateReference(creds);
if (cached == null)
{
// Means the handle got closed in between, return it back and let caller deal with the issue.
return;
}
s_CachedCreds[key] = cached;
GlobalLog.Print("CacheCredential() Caching New Handle = " + creds.ToString() + ", Current Cache Count = " + s_CachedCreds.Count);
//
// A simplest way of preventing infinite cache grows.
//
// Security relief (DoS):
// A number of active creds is never greater than a number of _outstanding_
// security sessions, i.e. SSL connections.
// So we will try to shrink cache to the number of active creds once in a while.
//
// We won't shrink cache in the case when NO new handles are coming to it.
//
if ((s_CachedCreds.Count % CheckExpiredModulo) == 0)
{
DictionaryEntry[] toRemoveAttempt = new DictionaryEntry[s_CachedCreds.Count];
s_CachedCreds.CopyTo(toRemoveAttempt, 0);
for (int i = 0; i < toRemoveAttempt.Length; ++i)
{
cached = toRemoveAttempt[i].Value as SafeCredentialReference;
if (cached != null)
{
creds = cached.Target;
cached.Dispose();
if (!creds.IsClosed && !creds.IsInvalid && (cached = SafeCredentialReference.CreateReference(creds)) != null)
{
s_CachedCreds[toRemoveAttempt[i].Key] = cached;
}
else
{
s_CachedCreds.Remove(toRemoveAttempt[i].Key);
}
}
}
GlobalLog.Print("Scavenged cache, New Cache Count = " + s_CachedCreds.Count);
}
}
else
{
GlobalLog.Print("CacheCredential() (locked retry) Found already cached Handle = " + cached.Target.ToString());
}
}
}
else
{
GlobalLog.Print("CacheCredential() Ignoring incoming handle = " + creds.ToString() + " since found already cached Handle = " + cached.Target.ToString());
}
}
/*++
* VerifyRemoteCertificate - Validates the content of a Remote Certificate
*
* checkCRL if true, checks the certificate revocation list for validity.
* checkCertName, if true checks the CN field of the certificate
* --*/
//This method validates a remote certificate.
//SECURITY: The scenario is allowed in semitrust StorePermission is asserted for Chain.Build
// A user callback has unique signature so it is safe to call it under permission assert.
//
internal bool VerifyRemoteCertificate(RemoteCertValidationCallback remoteCertValidationCallback)
{
GlobalLog.Enter("SecureChannel#" + LoggingHash.HashString(this) + "::VerifyRemoteCertificate");
SslPolicyErrors sslPolicyErrors = SslPolicyErrors.None;
// We don't catch exceptions in this method, so it's safe for "accepted" be initialized with true.
bool success = false;
X509Chain chain = null;
X509Certificate2 remoteCertificateEx = null;
try
{
X509Certificate2Collection remoteCertificateStore;
remoteCertificateEx = CertificateValidationPal.GetRemoteCertificate(_securityContext, out remoteCertificateStore);
_isRemoteCertificateAvailable = remoteCertificateEx != null;
if (remoteCertificateEx == null)
{
GlobalLog.Leave("SecureChannel#" + LoggingHash.HashString(this) + "::VerifyRemoteCertificate (no remote cert)", (!_remoteCertRequired).ToString());
sslPolicyErrors |= SslPolicyErrors.RemoteCertificateNotAvailable;
}
else
{
chain = new X509Chain();
chain.ChainPolicy.RevocationMode = _checkCertRevocation ? X509RevocationMode.Online : X509RevocationMode.NoCheck;
chain.ChainPolicy.RevocationFlag = X509RevocationFlag.ExcludeRoot;
if (remoteCertificateStore != null)
{
chain.ChainPolicy.ExtraStore.AddRange(remoteCertificateStore);
}
sslPolicyErrors |= CertificateValidationPal.VerifyCertificateProperties(
chain,
remoteCertificateEx,
_checkCertName,
_serverMode,
_hostName);
}
if (remoteCertValidationCallback != null)
{
success = remoteCertValidationCallback(_hostName, remoteCertificateEx, chain, sslPolicyErrors);
}
else
{
if (sslPolicyErrors == SslPolicyErrors.RemoteCertificateNotAvailable && !_remoteCertRequired)
{
success = true;
}
else
{
success = (sslPolicyErrors == SslPolicyErrors.None);
}
}
if (SecurityEventSource.Log.IsEnabled())
{
if (sslPolicyErrors != SslPolicyErrors.None)
{
SecurityEventSource.Log.RemoteCertificateError(LoggingHash.HashInt(this), SR.net_log_remote_cert_has_errors);
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateNotAvailable) != 0)
{
SecurityEventSource.Log.RemoteCertificateError(LoggingHash.HashInt(this), SR.net_log_remote_cert_not_available);
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateNameMismatch) != 0)
{
SecurityEventSource.Log.RemoteCertificateError(LoggingHash.HashInt(this), SR.net_log_remote_cert_name_mismatch);
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateChainErrors) != 0)
{
string chainStatusString = "ChainStatus: ";
foreach (X509ChainStatus chainStatus in chain.ChainStatus)
{
chainStatusString += "\t" + chainStatus.StatusInformation;
}
SecurityEventSource.Log.RemoteCertificateError(LoggingHash.HashInt(this), chainStatusString);
}
}
if (success)
{
if (remoteCertValidationCallback != null)
{
SecurityEventSource.Log.RemoteCertDeclaredValid(LoggingHash.HashInt(this));
}
else
{
SecurityEventSource.Log.RemoteCertHasNoErrors(LoggingHash.HashInt(this));
}
}
else
{
if (remoteCertValidationCallback != null)
{
SecurityEventSource.Log.RemoteCertUserDeclaredInvalid(LoggingHash.HashInt(this));
}
}
}
GlobalLog.Print("Cert Validation, remote cert = " + (remoteCertificateEx == null ? "<null>" : remoteCertificateEx.ToString(true)));
}
finally
{
// At least on Win2k server the chain is found to have dependencies on the original cert context.
// So it should be closed first.
if (chain != null)
{
chain.Dispose();
}
if (remoteCertificateEx != null)
{
remoteCertificateEx.Dispose();
}
}
GlobalLog.Leave("SecureChannel#" + LoggingHash.HashString(this) + "::VerifyRemoteCertificate", success.ToString());
return(success);
}
//
// Acquire Server Side Certificate information and set it on the class.
//
private bool AcquireServerCredentials(ref byte[] thumbPrint)
{
GlobalLog.Enter("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireServerCredentials");
X509Certificate localCertificate = null;
bool cachedCred = false;
if (_certSelectionDelegate != null)
{
X509CertificateCollection tempCollection = new X509CertificateCollection();
tempCollection.Add(_serverCertificate);
localCertificate = _certSelectionDelegate(string.Empty, tempCollection, null, Array.Empty <string>());
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireServerCredentials() Use delegate selected Cert");
}
else
{
localCertificate = _serverCertificate;
}
if (localCertificate == null)
{
throw new NotSupportedException(SR.net_ssl_io_no_server_cert);
}
// SECURITY: Accessing X509 cert Credential is disabled for semitrust.
// We no longer need to demand for unmanaged code permissions.
// EnsurePrivateKey should do the right demand for us.
X509Certificate2 selectedCert = EnsurePrivateKey(localCertificate);
if (selectedCert == null)
{
throw new NotSupportedException(SR.net_ssl_io_no_server_cert);
}
GlobalLog.Assert(localCertificate.Equals(selectedCert), "AcquireServerCredentials()|'selectedCert' does not match 'localCertificate'.");
//
// Note selectedCert is a safe ref possibly cloned from the user passed Cert object
//
byte[] guessedThumbPrint = selectedCert.GetCertHash();
try
{
SafeFreeCredentials cachedCredentialHandle = SslSessionsCache.TryCachedCredential(guessedThumbPrint, _sslProtocols, _serverMode, _encryptionPolicy);
if (cachedCredentialHandle != null)
{
_credentialsHandle = cachedCredentialHandle;
_serverCertificate = localCertificate;
cachedCred = true;
}
else
{
_credentialsHandle = SslStreamPal.AcquireCredentialsHandle(selectedCert, _sslProtocols, _encryptionPolicy, _serverMode);
thumbPrint = guessedThumbPrint;
_serverCertificate = localCertificate;
}
}
finally
{
// An extra cert could have been created, dispose it now.
if ((object)localCertificate != (object)selectedCert)
{
selectedCert.Dispose();
}
}
GlobalLog.Leave("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireServerCredentials, cachedCreds = " + cachedCred.ToString(), LoggingHash.ObjectToString(_credentialsHandle));
return(cachedCred);
}
public void SendAsync(MailMessage message, object userToken)
{
if (_disposed)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Enter(NetEventSource.ComponentType.Web, this, "SendAsync", "DeliveryMethod=" + DeliveryMethod.ToString());
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Enter("SmtpClient#" + LoggingHash.HashString(this) + "::SendAsync Transport#" + LoggingHash.HashString(_transport));
}
try
{
if (InCall)
{
throw new InvalidOperationException(SR.net_inasync);
}
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (DeliveryMethod == SmtpDeliveryMethod.Network)
{
CheckHostAndPort();
}
_recipients = new MailAddressCollection();
if (message.From == null)
{
throw new InvalidOperationException(SR.SmtpFromRequired);
}
if (message.To != null)
{
foreach (MailAddress address in message.To)
{
_recipients.Add(address);
}
}
if (message.Bcc != null)
{
foreach (MailAddress address in message.Bcc)
{
_recipients.Add(address);
}
}
if (message.CC != null)
{
foreach (MailAddress address in message.CC)
{
_recipients.Add(address);
}
}
if (_recipients.Count == 0)
{
throw new InvalidOperationException(SR.SmtpRecipientRequired);
}
try
{
InCall = true;
_cancelled = false;
_message = message;
string pickupDirectory = PickupDirectoryLocation;
CredentialCache cache;
// Skip token capturing if no credentials are used or they don't include a default one.
// Also do capture the token if ICredential is not of CredentialCache type so we don't know what the exact credential response will be.
_transport.IdentityRequired = Credentials != null && (ReferenceEquals(Credentials, CredentialCache.DefaultNetworkCredentials) || (cache = Credentials as CredentialCache) == null);
_asyncOp = AsyncOperationManager.CreateOperation(userToken);
switch (DeliveryMethod)
{
case SmtpDeliveryMethod.PickupDirectoryFromIis:
throw new NotSupportedException(SR.SmtpGetIisPickupDirectoryNotSupported);
case SmtpDeliveryMethod.SpecifiedPickupDirectory:
{
if (EnableSsl)
{
throw new SmtpException(SR.SmtpPickupDirectoryDoesnotSupportSsl);
}
_writer = GetFileMailWriter(pickupDirectory);
bool allowUnicode = IsUnicodeSupported();
ValidateUnicodeRequirement(message, _recipients, allowUnicode);
message.Send(_writer, true, allowUnicode);
if (_writer != null)
{
_writer.Close();
}
_transport.ReleaseConnection();
AsyncCompletedEventArgs eventArgs = new AsyncCompletedEventArgs(null, false, _asyncOp.UserSuppliedState);
InCall = false;
_asyncOp.PostOperationCompleted(_onSendCompletedDelegate, eventArgs);
break;
}
case SmtpDeliveryMethod.Network:
default:
_operationCompletedResult = new ContextAwareResult(_transport.IdentityRequired, true, null, this, s_contextSafeCompleteCallback);
lock (_operationCompletedResult.StartPostingAsyncOp())
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SmtpClient#" + LoggingHash.HashString(this) + "::SendAsync calling BeginConnect. Transport#" + LoggingHash.HashString(_transport));
}
_transport.BeginGetConnection(_operationCompletedResult, ConnectCallback, _operationCompletedResult, Host, Port);
_operationCompletedResult.FinishPostingAsyncOp();
}
break;
}
}
catch (Exception e)
{
InCall = false;
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exception(NetEventSource.ComponentType.Web, this, "Send", e);
}
if (e is SmtpFailedRecipientException && !((SmtpFailedRecipientException)e).fatal)
{
throw;
}
Abort();
if (_timedOut)
{
throw new SmtpException(SR.net_timeout);
}
if (e is SecurityException ||
e is AuthenticationException ||
e is SmtpException)
{
throw;
}
throw new SmtpException(SR.SmtpSendMailFailure, e);
}
}
finally
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Web, this, "SendAsync", null);
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Leave("SmtpClient#" + LoggingHash.HashString(this) + "::SendAsync");
}
}
}
//UEUE
/// <include file='doc\UDPClient.uex' path='docs/doc[@for="UdpClient.Close"]/*' />
public void Close()
{
GlobalLog.Print("UdpClient::Close()");
this.FreeResources();
GC.SuppressFinalize(this);
}
// This method will be called by us when the IO completes synchronously and
// by the ThreadPool when the IO completes asynchronously. (only called on WinNT)
internal override object PostCompletion(int numBytes)
{
SocketError errorCode = (SocketError)ErrorCode;
Internals.SocketAddress remoteSocketAddress = null;
if (errorCode == SocketError.Success)
{
_localBytesTransferred = numBytes;
if (SocketsEventSource.Log.IsEnabled())
{
LogBuffer((long)numBytes);
}
// get the endpoint
remoteSocketAddress = IPEndPointExtensions.Serialize(_listenSocket._rightEndPoint);
IntPtr localAddr;
int localAddrLength;
IntPtr remoteAddr;
// set the socket context
try
{
_listenSocket.GetAcceptExSockaddrs(
Marshal.UnsafeAddrOfPinnedArrayElement(_buffer, 0),
_buffer.Length - (_addressBufferLength * 2),
_addressBufferLength,
_addressBufferLength,
out localAddr,
out localAddrLength,
out remoteAddr,
out remoteSocketAddress.InternalSize);
Marshal.Copy(remoteAddr, remoteSocketAddress.Buffer, 0, remoteSocketAddress.Size);
IntPtr handle = _listenSocket.SafeHandle.DangerousGetHandle();
errorCode = Interop.Winsock.setsockopt(
_acceptSocket.SafeHandle,
SocketOptionLevel.Socket,
SocketOptionName.UpdateAcceptContext,
ref handle,
Marshal.SizeOf(handle));
if (errorCode == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("AcceptOverlappedAsyncResult#" + LoggingHash.HashString(this) + "::PostCallback() setsockopt handle:" + handle.ToString() + " AcceptSocket:" + LoggingHash.HashString(_acceptSocket) + " itsHandle:" + _acceptSocket.SafeHandle.DangerousGetHandle().ToString() + " returns:" + errorCode.ToString());
}
}
catch (ObjectDisposedException)
{
errorCode = SocketError.OperationAborted;
}
ErrorCode = (int)errorCode;
}
if (errorCode != SocketError.Success)
{
return(null);
}
return(_listenSocket.UpdateAcceptSocket(_acceptSocket, _listenSocket._rightEndPoint.Create(remoteSocketAddress)));
}
//
// This is the static internal callback that will be called when
// the IO we issued for the user to winsock has completed, either
// synchronously (Signaled=false) or asynchronously (Signaled=true)
// when this function gets called it must:
// 1) update the AsyncResult object with the results of the completed IO
// 2) signal events that the user might be waiting on
// 3) cal the callback function that the user might have specified
//
internal static void ConnectCallback(object stateObject, bool Signaled)
{
ConnectAsyncResult asyncResult = stateObject as ConnectAsyncResult;
Socket socket = asyncResult.AsyncObject as Socket;
GlobalLog.Enter("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", "Signaled:" + Signaled.ToString());
GlobalLog.Assert(!asyncResult.IsCompleted, "Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() asyncResult.IsCompleted", "");
//
// we now need to get the status of the async completion, we had an easy implementation
// that uses GetSocketOption(), but VadimE suggested not to use this 'cause it may be
// buggy on some platforms, so we use WSAEnumNetworkEvents() instead:
//
// The best way to do this is to call WSAEnumNetworkEvents and use the error code iError
// array corresponding to FD_CONNECT. getsockopt (SO_ERROR) may return NO_ERROR under
// stress even in case of error at least on Winnt4.0 (I don't remember whether I fixed
// it on Win2000 or WinXP).
//
//
// get async completion
//
/*
* int errorCode = (int)socket.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Error);
* GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() GetSocketOption() returns errorCode:" + errorCode.ToString());
*/
NetworkEvents networkEvents = new NetworkEvents();
networkEvents.Events = AsyncEventBits.FdConnect;
AutoResetEvent chkAsyncEvent = socket.m_AsyncEvent;
int errorCode = SocketErrors.WSAENOTSOCK;
if (chkAsyncEvent != null)
{
errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAEnumNetworkEvents(
socket.m_Handle,
chkAsyncEvent.Handle,
ref networkEvents);
if (errorCode != SocketErrors.Success)
{
errorCode = Marshal.GetLastWin32Error();
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() WSAEnumNetworkEvents() failed with errorCode:" + errorCode.ToString());
}
else
{
errorCode = networkEvents.ErrorCodes[(int)AsyncEventBitsPos.FdConnectBit];
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() ErrorCodes(FdConnect) got errorCode:" + errorCode.ToString());
}
}
try {
//
// cancel async event
//
socket.SetAsyncEventSelect(AsyncEventBits.FdNone);
//
// go back to blocking mode
//
socket.InternalSetBlocking(true);
}
catch (Exception exception) {
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() caught exception::" + exception.Message);
asyncResult.Result = exception;
}
//
// if the native non-blocking call failed we'll throw a SocketException in EndConnect()
//
if (errorCode != SocketErrors.Success)
{
//
// just save the error code, the SocketException will be thrown in EndConnect()
//
asyncResult.ErrorCode = errorCode;
}
else
{
//
// the Socket is connected, update our state and performance counter
//
socket.SetToConnected();
}
//
// call the user's callback now, if there is one.
//
asyncResult.InvokeCallback(false);
GlobalLog.Leave("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", errorCode.ToString());
}
//
// This method will be called by us when the IO completes synchronously and
// by the ThreadPool when the IO completes asynchronously. (only called on WinNT)
//
internal override object PostCompletion(int numBytes)
{
SocketError errorCode = (SocketError)ErrorCode;
SocketAddress remoteSocketAddress = null;
if (errorCode == SocketError.Success)
{
m_LocalBytesTransferred = numBytes;
if (Logging.On)
{
LogBuffer((long)numBytes);
}
//get the endpoint
remoteSocketAddress = m_ListenSocket.m_RightEndPoint.Serialize();
IntPtr localAddr;
int localAddrLength;
IntPtr remoteAddr;
//set the socket context
try
{
m_ListenSocket.GetAcceptExSockaddrs(
Marshal.UnsafeAddrOfPinnedArrayElement(m_Buffer, 0),
m_Buffer.Length - (m_AddressBufferLength * 2),
m_AddressBufferLength,
m_AddressBufferLength,
out localAddr,
out localAddrLength,
out remoteAddr,
out remoteSocketAddress.m_Size
);
Marshal.Copy(remoteAddr, remoteSocketAddress.m_Buffer, 0, remoteSocketAddress.m_Size);
IntPtr handle = m_ListenSocket.SafeHandle.DangerousGetHandle();
errorCode = UnsafeNclNativeMethods.OSSOCK.setsockopt(
m_AcceptSocket.SafeHandle,
SocketOptionLevel.Socket,
SocketOptionName.UpdateAcceptContext,
ref handle,
Marshal.SizeOf(handle));
if (errorCode == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
GlobalLog.Print("AcceptOverlappedAsyncResult#" + ValidationHelper.HashString(this) + "::PostCallback() setsockopt handle:" + handle.ToString() + " AcceptSocket:" + ValidationHelper.HashString(m_AcceptSocket) + " itsHandle:" + m_AcceptSocket.SafeHandle.DangerousGetHandle().ToString() + " returns:" + errorCode.ToString());
}
catch (ObjectDisposedException)
{
errorCode = SocketError.OperationAborted;
}
ErrorCode = (int)errorCode;
}
if (errorCode == SocketError.Success)
{
return(m_ListenSocket.UpdateAcceptSocket(m_AcceptSocket, m_ListenSocket.m_RightEndPoint.Create(remoteSocketAddress), false));
}
else
{
return(null);
}
}
//
// This is the static internal callback that will be called when
// the IO we issued for the user to winsock has completed, either
// synchronously (Signaled=false) or asynchronously (Signaled=true)
// when this function gets called it must:
// 1) update the AsyncResult object with the results of the completed IO
// 2) signal events that the user might be waiting on
// 3) cal the callback function that the user might have specified
//
internal static void ConnectCallback(object stateObject, bool Signaled)
{
ConnectAsyncResult asyncResult = stateObject as ConnectAsyncResult;
Socket socket = asyncResult.AsyncObject as Socket;
GlobalLog.Enter("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", "Signaled:" + Signaled.ToString());
GlobalLog.Assert(!asyncResult.IsCompleted, "Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() asyncResult.IsCompleted", "");
//
//
// get async completion
//
/*
* int errorCode = (int)socket.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Error);
* GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() GetSocketOption() returns errorCode:" + errorCode.ToString());
*/
NetworkEvents networkEvents = new NetworkEvents();
networkEvents.Events = AsyncEventBits.FdConnect;
AutoResetEvent chkAsyncEvent = socket.m_AsyncEvent;
int errorCode = SocketErrors.WSAENOTSOCK;
if (chkAsyncEvent != null)
{
errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAEnumNetworkEvents(
socket.m_Handle,
chkAsyncEvent.Handle,
ref networkEvents);
if (errorCode != SocketErrors.Success)
{
errorCode = Marshal.GetLastWin32Error();
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() WSAEnumNetworkEvents() failed with errorCode:" + errorCode.ToString());
}
else
{
errorCode = networkEvents.ErrorCodes[(int)AsyncEventBitsPos.FdConnectBit];
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() ErrorCodes(FdConnect) got errorCode:" + errorCode.ToString());
}
}
try {
//
// cancel async event
//
socket.SetAsyncEventSelect(AsyncEventBits.FdNone);
//
// go back to blocking mode
//
socket.InternalSetBlocking(true);
}
catch (Exception exception) {
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() caught exception::" + exception.Message);
asyncResult.Result = exception;
}
//
// if the native non-blocking call failed we'll throw a SocketException in EndConnect()
//
if (errorCode != SocketErrors.Success)
{
//
// just save the error code, the SocketException will be thrown in EndConnect()
//
asyncResult.ErrorCode = errorCode;
}
else
{
//
// the Socket is connected, update our state and performance counter
//
socket.SetToConnected();
}
//
// call the user's callback now, if there is one.
//
asyncResult.InvokeCallback(false);
GlobalLog.Leave("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", errorCode.ToString());
}
protected SafeNativeOverlapped()
: this(IntPtr.Zero)
{
GlobalLog.Print("SafeNativeOverlapped#" + LoggingHash.HashString(this) + "::ctor(null)");
}
internal unsafe static int CompleteAuthToken(
ref SafeDeleteContext refContext,
SecurityBuffer[] inSecBuffers)
{
GlobalLog.Enter("SafeDeleteContext::CompleteAuthToken");
GlobalLog.Print(" refContext = " + LoggingHash.ObjectToString(refContext));
#if TRACE_VERBOSE
GlobalLog.Print(" inSecBuffers[] = length:" + inSecBuffers.Length);
#endif
GlobalLog.Assert(inSecBuffers != null, "SafeDeleteContext::CompleteAuthToken()|inSecBuffers == null");
var inSecurityBufferDescriptor = new Interop.Secur32.SecurityBufferDescriptor(inSecBuffers.Length);
int errorCode = (int)Interop.SecurityStatus.InvalidHandle;
// These are pinned user byte arrays passed along with SecurityBuffers.
GCHandle[] pinnedInBytes = null;
var inUnmanagedBuffer = new Interop.Secur32.SecurityBufferStruct[inSecurityBufferDescriptor.Count];
fixed(void *inUnmanagedBufferPtr = inUnmanagedBuffer)
{
// Fix Descriptor pointer that points to unmanaged SecurityBuffers.
inSecurityBufferDescriptor.UnmanagedPointer = inUnmanagedBufferPtr;
pinnedInBytes = new GCHandle[inSecurityBufferDescriptor.Count];
SecurityBuffer securityBuffer;
for (int index = 0; index < inSecurityBufferDescriptor.Count; ++index)
{
securityBuffer = inSecBuffers[index];
if (securityBuffer != null)
{
inUnmanagedBuffer[index].count = securityBuffer.size;
inUnmanagedBuffer[index].type = securityBuffer.type;
// Use the unmanaged token if it's not null; otherwise use the managed buffer.
if (securityBuffer.unmanagedToken != null)
{
inUnmanagedBuffer[index].token = securityBuffer.unmanagedToken.DangerousGetHandle();
}
else if (securityBuffer.token == null || securityBuffer.token.Length == 0)
{
inUnmanagedBuffer[index].token = IntPtr.Zero;
}
else
{
pinnedInBytes[index] = GCHandle.Alloc(securityBuffer.token, GCHandleType.Pinned);
inUnmanagedBuffer[index].token = Marshal.UnsafeAddrOfPinnedArrayElement(securityBuffer.token, securityBuffer.offset);
}
#if TRACE_VERBOSE
GlobalLog.Print("SecBuffer: cbBuffer:" + securityBuffer.size + " BufferType:" + securityBuffer.type);
#endif
}
}
Interop.Secur32.SSPIHandle contextHandle = new Interop.Secur32.SSPIHandle();
if (refContext != null)
{
contextHandle = refContext._handle;
}
try
{
if (refContext == null || refContext.IsInvalid)
{
refContext = new SafeDeleteContext_SECURITY();
}
try
{
bool ignore = false;
refContext.DangerousAddRef(ref ignore);
errorCode = Interop.Secur32.CompleteAuthToken(contextHandle.IsZero ? null : &contextHandle, inSecurityBufferDescriptor);
}
finally
{
refContext.DangerousRelease();
}
}
finally
{
if (pinnedInBytes != null)
{
for (int index = 0; index < pinnedInBytes.Length; index++)
{
if (pinnedInBytes[index].IsAllocated)
{
pinnedInBytes[index].Free();
}
}
}
}
}
GlobalLog.Leave("SafeDeleteContext::CompleteAuthToken() unmanaged CompleteAuthToken()", "errorCode:0x" + errorCode.ToString("x8") + " refContext:" + LoggingHash.ObjectToString(refContext));
return(errorCode);
}
public void SendAsync(MailMessage message, object userToken)
{
if (disposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
if (Logging.On)
{
Logging.Enter(Logging.Web, this, "SendAsync", "DeliveryMethod=" + DeliveryMethod.ToString());
}
GlobalLog.Enter("SmtpClient#" + ValidationHelper.HashString(this) + "::SendAsync Transport#" + ValidationHelper.HashString(transport));
try {
if (InCall)
{
throw new InvalidOperationException(SR.GetString(SR.net_inasync));
}
if (message == null)
{
throw new ArgumentNullException("message");
}
if (DeliveryMethod == SmtpDeliveryMethod.Network)
{
CheckHostAndPort();
}
recipients = new MailAddressCollection();
if (message.From == null)
{
throw new InvalidOperationException(SR.GetString(SR.SmtpFromRequired));
}
if (message.To != null)
{
foreach (MailAddress address in message.To)
{
recipients.Add(address);
}
}
if (message.Bcc != null)
{
foreach (MailAddress address in message.Bcc)
{
recipients.Add(address);
}
}
if (message.CC != null)
{
foreach (MailAddress address in message.CC)
{
recipients.Add(address);
}
}
if (recipients.Count == 0)
{
throw new InvalidOperationException(SR.GetString(SR.SmtpRecipientRequired));
}
try {
InCall = true;
cancelled = false;
this.message = message;
string pickupDirectory = PickupDirectoryLocation;
#if !FEATURE_PAL
CredentialCache cache;
// Skip token capturing if no credentials are used or they don't include a default one.
// Also do capture the token if ICredential is not of CredentialCache type so we don't know what the exact credential response will be.
transport.IdentityRequired = Credentials != null && (Credentials is SystemNetworkCredential || (cache = Credentials as CredentialCache) == null || cache.IsDefaultInCache);
#endif // !FEATURE_PAL
asyncOp = AsyncOperationManager.CreateOperation(userToken);
switch (DeliveryMethod)
{
#if !FEATURE_PAL
case SmtpDeliveryMethod.PickupDirectoryFromIis:
pickupDirectory = IisPickupDirectory.GetPickupDirectory();
goto case SmtpDeliveryMethod.SpecifiedPickupDirectory;
#endif // !FEATURE_PAL
case SmtpDeliveryMethod.SpecifiedPickupDirectory:
{
if (EnableSsl)
{
throw new SmtpException(SR.GetString(SR.SmtpPickupDirectoryDoesnotSupportSsl));
}
writer = GetFileMailWriter(pickupDirectory);
bool allowUnicode = IsUnicodeSupported();
ValidateUnicodeRequirement(message, recipients, allowUnicode);
message.Send(writer, true, allowUnicode);
if (writer != null)
{
writer.Close();
}
transport.ReleaseConnection();
AsyncCompletedEventArgs eventArgs = new AsyncCompletedEventArgs(null, false, asyncOp.UserSuppliedState);
InCall = false;
asyncOp.PostOperationCompleted(onSendCompletedDelegate, eventArgs);
break;
}
case SmtpDeliveryMethod.Network:
default:
operationCompletedResult = new ContextAwareResult(transport.IdentityRequired, true, null, this, _ContextSafeCompleteCallback);
lock (operationCompletedResult.StartPostingAsyncOp())
{
GlobalLog.Print("SmtpClient#" + ValidationHelper.HashString(this) + "::SendAsync calling BeginConnect. Transport#" + ValidationHelper.HashString(transport));
transport.BeginGetConnection(ServicePoint, operationCompletedResult, ConnectCallback, operationCompletedResult);
operationCompletedResult.FinishPostingAsyncOp();
}
break;
}
}
catch (Exception e) {
InCall = false;
if (Logging.On)
{
Logging.Exception(Logging.Web, this, "Send", e);
}
if (e is SmtpFailedRecipientException && !((SmtpFailedRecipientException)e).fatal)
{
throw;
}
Abort();
if (timedOut)
{
throw new SmtpException(SR.GetString(SR.net_timeout));
}
if (e is SecurityException ||
e is AuthenticationException ||
e is SmtpException)
{
throw;
}
throw new SmtpException(SR.GetString(SR.SmtpSendMailFailure), e);
}
} finally {
if (Logging.On)
{
Logging.Exit(Logging.Web, this, "SendAsync", null);
}
GlobalLog.Leave("SmtpClient#" + ValidationHelper.HashString(this) + "::SendAsync");
}
}
//-------------------------------------------------------------------
internal unsafe static int AcceptSecurityContext(
ref SafeFreeCredentials inCredentials,
ref SafeDeleteContext refContext,
Interop.Secur32.ContextFlags inFlags,
Interop.Secur32.Endianness endianness,
SecurityBuffer inSecBuffer,
SecurityBuffer[] inSecBuffers,
SecurityBuffer outSecBuffer,
ref Interop.Secur32.ContextFlags outFlags)
{
#if TRACE_VERBOSE
GlobalLog.Enter("SafeDeleteContext::AcceptSecurityContex");
GlobalLog.Print(" credential = " + inCredentials.ToString());
GlobalLog.Print(" refContext = " + LoggingHash.ObjectToString(refContext));
GlobalLog.Print(" inFlags = " + inFlags);
if (inSecBuffers == null)
{
GlobalLog.Print(" inSecBuffers = (null)");
}
else
{
GlobalLog.Print(" inSecBuffers[] = length:" + inSecBuffers.Length);
}
#endif
GlobalLog.Assert(outSecBuffer != null, "SafeDeleteContext::AcceptSecurityContext()|outSecBuffer != null");
GlobalLog.Assert(inSecBuffer == null || inSecBuffers == null, "SafeDeleteContext::AcceptSecurityContext()|inSecBuffer == null || inSecBuffers == null");
if (inCredentials == null)
{
throw new ArgumentNullException("inCredentials");
}
Interop.Secur32.SecurityBufferDescriptor inSecurityBufferDescriptor = null;
if (inSecBuffer != null)
{
inSecurityBufferDescriptor = new Interop.Secur32.SecurityBufferDescriptor(1);
}
else if (inSecBuffers != null)
{
inSecurityBufferDescriptor = new Interop.Secur32.SecurityBufferDescriptor(inSecBuffers.Length);
}
Interop.Secur32.SecurityBufferDescriptor outSecurityBufferDescriptor = new Interop.Secur32.SecurityBufferDescriptor(1);
// Actually, this is returned in outFlags.
bool isSspiAllocated = (inFlags & Interop.Secur32.ContextFlags.AllocateMemory) != 0 ? true : false;
int errorCode = -1;
Interop.Secur32.SSPIHandle contextHandle = new Interop.Secur32.SSPIHandle();
if (refContext != null)
{
contextHandle = refContext._handle;
}
// These are pinned user byte arrays passed along with SecurityBuffers.
GCHandle[] pinnedInBytes = null;
GCHandle pinnedOutBytes = new GCHandle();
// Optional output buffer that may need to be freed.
SafeFreeContextBuffer outFreeContextBuffer = null;
try
{
pinnedOutBytes = GCHandle.Alloc(outSecBuffer.token, GCHandleType.Pinned);
var inUnmanagedBuffer = new Interop.Secur32.SecurityBufferStruct[inSecurityBufferDescriptor == null ? 1 : inSecurityBufferDescriptor.Count];
fixed(void *inUnmanagedBufferPtr = inUnmanagedBuffer)
{
if (inSecurityBufferDescriptor != null)
{
// Fix Descriptor pointer that points to unmanaged SecurityBuffers.
inSecurityBufferDescriptor.UnmanagedPointer = inUnmanagedBufferPtr;
pinnedInBytes = new GCHandle[inSecurityBufferDescriptor.Count];
SecurityBuffer securityBuffer;
for (int index = 0; index < inSecurityBufferDescriptor.Count; ++index)
{
securityBuffer = inSecBuffer != null ? inSecBuffer : inSecBuffers[index];
if (securityBuffer != null)
{
// Copy the SecurityBuffer content into unmanaged place holder.
inUnmanagedBuffer[index].count = securityBuffer.size;
inUnmanagedBuffer[index].type = securityBuffer.type;
// Use the unmanaged token if it's not null; otherwise use the managed buffer.
if (securityBuffer.unmanagedToken != null)
{
inUnmanagedBuffer[index].token = securityBuffer.unmanagedToken.DangerousGetHandle();
}
else if (securityBuffer.token == null || securityBuffer.token.Length == 0)
{
inUnmanagedBuffer[index].token = IntPtr.Zero;
}
else
{
pinnedInBytes[index] = GCHandle.Alloc(securityBuffer.token, GCHandleType.Pinned);
inUnmanagedBuffer[index].token = Marshal.UnsafeAddrOfPinnedArrayElement(securityBuffer.token, securityBuffer.offset);
}
#if TRACE_VERBOSE
GlobalLog.Print("SecBuffer: cbBuffer:" + securityBuffer.size + " BufferType:" + securityBuffer.type);
#endif
}
}
}
var outUnmanagedBuffer = new Interop.Secur32.SecurityBufferStruct[1];
fixed(void *outUnmanagedBufferPtr = outUnmanagedBuffer)
{
// Fix Descriptor pointer that points to unmanaged SecurityBuffers.
outSecurityBufferDescriptor.UnmanagedPointer = outUnmanagedBufferPtr;
// Copy the SecurityBuffer content into unmanaged place holder.
outUnmanagedBuffer[0].count = outSecBuffer.size;
outUnmanagedBuffer[0].type = outSecBuffer.type;
if (outSecBuffer.token == null || outSecBuffer.token.Length == 0)
{
outUnmanagedBuffer[0].token = IntPtr.Zero;
}
else
{
outUnmanagedBuffer[0].token = Marshal.UnsafeAddrOfPinnedArrayElement(outSecBuffer.token, outSecBuffer.offset);
}
if (isSspiAllocated)
{
outFreeContextBuffer = SafeFreeContextBuffer.CreateEmptyHandle();
}
if (refContext == null || refContext.IsInvalid)
{
refContext = new SafeDeleteContext_SECURITY();
}
errorCode = MustRunAcceptSecurityContext_SECURITY(
ref inCredentials,
contextHandle.IsZero ? null : &contextHandle,
inSecurityBufferDescriptor,
inFlags,
endianness,
refContext,
outSecurityBufferDescriptor,
ref outFlags,
outFreeContextBuffer);
GlobalLog.Print("SafeDeleteContext:AcceptSecurityContext Marshalling OUT buffer");
// Get unmanaged buffer with index 0 as the only one passed into PInvoke.
outSecBuffer.size = outUnmanagedBuffer[0].count;
outSecBuffer.type = outUnmanagedBuffer[0].type;
if (outSecBuffer.size > 0)
{
outSecBuffer.token = new byte[outSecBuffer.size];
Marshal.Copy(outUnmanagedBuffer[0].token, outSecBuffer.token, 0, outSecBuffer.size);
}
else
{
outSecBuffer.token = null;
}
}
}
}
finally
{
if (pinnedInBytes != null)
{
for (int index = 0; index < pinnedInBytes.Length; index++)
{
if (pinnedInBytes[index].IsAllocated)
{
pinnedInBytes[index].Free();
}
}
}
if (pinnedOutBytes.IsAllocated)
{
pinnedOutBytes.Free();
}
if (outFreeContextBuffer != null)
{
outFreeContextBuffer.Dispose();
}
}
GlobalLog.Leave("SafeDeleteContext::AcceptSecurityContex() unmanaged AcceptSecurityContex()", "errorCode:0x" + errorCode.ToString("x8") + " refContext:" + LoggingHash.ObjectToString(refContext));
return(errorCode);
}
private static SecurityStatusPal EstablishSecurityContext(
SafeFreeNegoCredentials credential,
ref SafeDeleteContext context,
string targetName,
ContextFlagsPal inFlags,
SecurityBuffer inputBuffer,
SecurityBuffer outputBuffer,
ref ContextFlagsPal outFlags)
{
bool isNtlmOnly = credential.IsNtlmOnly;
if (context == null)
{
// Empty target name causes the failure on Linux, hence passing a non-empty string
context = isNtlmOnly ? new SafeDeleteNegoContext(credential, credential.UserName) : new SafeDeleteNegoContext(credential, targetName);
}
SafeDeleteNegoContext negoContext = (SafeDeleteNegoContext)context;
try
{
Interop.NetSecurityNative.GssFlags inputFlags = ContextFlagsAdapterPal.GetInteropFromContextFlagsPal(inFlags);
uint outputFlags;
int isNtlmUsed;
SafeGssContextHandle contextHandle = negoContext.GssContext;
bool done = Interop.GssApi.EstablishSecurityContext(
ref contextHandle,
credential.GssCredential,
isNtlmOnly,
negoContext.TargetName,
inputFlags,
inputBuffer?.token,
out outputBuffer.token,
out outputFlags,
out isNtlmUsed);
Debug.Assert(outputBuffer.token != null, "Unexpected null buffer returned by GssApi");
outputBuffer.size = outputBuffer.token.Length;
outputBuffer.offset = 0;
outFlags = ContextFlagsAdapterPal.GetContextFlagsPalFromInterop((Interop.NetSecurityNative.GssFlags)outputFlags);
// Save the inner context handle for further calls to NetSecurity
Debug.Assert(negoContext.GssContext == null || contextHandle == negoContext.GssContext);
if (null == negoContext.GssContext)
{
negoContext.SetGssContext(contextHandle);
}
// Populate protocol used for authentication
if (done)
{
negoContext.SetAuthenticationPackage(Convert.ToBoolean(isNtlmUsed));
}
SecurityStatusPalErrorCode errorCode = done ?
(negoContext.IsNtlmUsed && outputBuffer.size > 0 ? SecurityStatusPalErrorCode.OK : SecurityStatusPalErrorCode.CompleteNeeded) :
SecurityStatusPalErrorCode.ContinueNeeded;
return(new SecurityStatusPal(errorCode));
}
catch (Exception ex)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("Exception Caught. - " + ex);
}
return(new SecurityStatusPal(SecurityStatusPalErrorCode.InternalError, ex));
}
}
/*++
* AcquireCredentials - Attempts to find Client Credential
* Information, that can be sent to the server. In our case,
* this is only Client Certificates, that we have Credential Info.
*
* How it works:
* case 0: Cert Selection delegate is present
* Always use its result as the client cert answer.
* Try to use cached credential handle whenever feasible.
* Do not use cached anonymous creds if the delegate has returned null
* and the collection is not empty (allow responding with the cert later).
*
* case 1: Certs collection is empty
* Always use the same statically acquired anonymous SSL Credential
*
* case 2: Before our Connection with the Server
* If we have a cached credential handle keyed by first X509Certificate
**content** in the passed collection, then we use that cached
* credential and hoping to restart a session.
*
* Otherwise create a new anonymous (allow responding with the cert later).
*
* case 3: After our Connection with the Server (i.e. during handshake or re-handshake)
* The server has requested that we send it a Certificate then
* we Enumerate a list of server sent Issuers trying to match against
* our list of Certificates, the first match is sent to the server.
*
* Once we got a cert we again try to match cached credential handle if possible.
* This will not restart a session but helps minimizing the number of handles we create.
*
* In the case of an error getting a Certificate or checking its private Key we fall back
* to the behavior of having no certs, case 1.
*
* Returns: True if cached creds were used, false otherwise.
*
* --*/
private bool AcquireClientCredentials(ref byte[] thumbPrint)
{
GlobalLog.Enter("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials");
// Acquire possible Client Certificate information and set it on the handle.
X509Certificate clientCertificate = null; // This is a candidate that can come from the user callback or be guessed when targeting a session restart.
ArrayList filteredCerts = new ArrayList(); // This is an intermediate client certs collection that try to use if no selectedCert is available yet.
string[] issuers = null; // This is a list of issuers sent by the server, only valid is we do know what the server cert is.
bool sessionRestartAttempt = false; // If true and no cached creds we will use anonymous creds.
if (_certSelectionDelegate != null)
{
issuers = GetRequestCertificateAuthorities();
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials() calling CertificateSelectionCallback");
X509Certificate2 remoteCert = null;
try
{
X509Certificate2Collection dummyCollection;
remoteCert = CertificateValidationPal.GetRemoteCertificate(_securityContext, out dummyCollection);
clientCertificate = _certSelectionDelegate(_hostName, ClientCertificates, remoteCert, issuers);
}
finally
{
if (remoteCert != null)
{
remoteCert.Dispose();
}
}
if (clientCertificate != null)
{
if (_credentialsHandle == null)
{
sessionRestartAttempt = true;
}
filteredCerts.Add(clientCertificate);
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.CertificateFromDelegate(LoggingHash.HashInt(this));
}
}
else
{
if (ClientCertificates.Count == 0)
{
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.NoDelegateNoClientCert(LoggingHash.HashInt(this));
}
sessionRestartAttempt = true;
}
else
{
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.NoDelegateButClientCert(LoggingHash.HashInt(this));
}
}
}
}
else if (_credentialsHandle == null && _clientCertificates != null && _clientCertificates.Count > 0)
{
// This is where we attempt to restart a session by picking the FIRST cert from the collection.
// Otherwise it is either server sending a client cert request or the session is renegotiated.
clientCertificate = ClientCertificates[0];
sessionRestartAttempt = true;
if (clientCertificate != null)
{
filteredCerts.Add(clientCertificate);
}
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.AttemptingRestartUsingCert(clientCertificate == null ? "null" : clientCertificate.ToString(true), LoggingHash.HashInt(this));
}
}
else if (_clientCertificates != null && _clientCertificates.Count > 0)
{
//
// This should be a server request for the client cert sent over currently anonymous sessions.
//
issuers = GetRequestCertificateAuthorities();
if (SecurityEventSource.Log.IsEnabled())
{
if (issuers == null || issuers.Length == 0)
{
SecurityEventSource.Log.NoIssuersTryAllCerts(LoggingHash.HashInt(this));
}
else
{
SecurityEventSource.Log.LookForMatchingCerts(issuers.Length, LoggingHash.HashInt(this));
}
}
for (int i = 0; i < _clientCertificates.Count; ++i)
{
//
// Make sure we add only if the cert matches one of the issuers.
// If no issuers were sent and then try all client certs starting with the first one.
//
if (issuers != null && issuers.Length != 0)
{
X509Certificate2 certificateEx = null;
X509Chain chain = null;
try
{
certificateEx = MakeEx(_clientCertificates[i]);
if (certificateEx == null)
{
continue;
}
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials() root cert:" + certificateEx.Issuer);
chain = new X509Chain();
chain.ChainPolicy.RevocationMode = X509RevocationMode.NoCheck;
chain.ChainPolicy.VerificationFlags = X509VerificationFlags.IgnoreInvalidName;
chain.Build(certificateEx);
bool found = false;
//
// We ignore any errors happened with chain.
//
if (chain.ChainElements.Count > 0)
{
for (int ii = 0; ii < chain.ChainElements.Count; ++ii)
{
string issuer = chain.ChainElements[ii].Certificate.Issuer;
found = Array.IndexOf(issuers, issuer) != -1;
if (found)
{
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials() matched:" + issuer);
break;
}
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials() no match:" + issuer);
}
}
if (!found)
{
continue;
}
}
finally
{
if (chain != null)
{
chain.Dispose();
}
if (certificateEx != null && (object)certificateEx != (object)_clientCertificates[i])
{
certificateEx.Dispose();
}
}
}
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.SelectedCert(_clientCertificates[i].ToString(true), LoggingHash.HashInt(this));
}
filteredCerts.Add(_clientCertificates[i]);
}
}
bool cachedCred = false; // This is a return result from this method.
X509Certificate2 selectedCert = null; // This is a final selected cert (ensured that it does have private key with it).
clientCertificate = null;
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.CertsAfterFiltering(filteredCerts.Count, LoggingHash.HashInt(this));
if (filteredCerts.Count != 0)
{
SecurityEventSource.Log.FindingMatchingCerts(LoggingHash.HashInt(this));
}
}
//
// ATTN: When the client cert was returned by the user callback OR it was guessed AND it has no private key,
// THEN anonymous (no client cert) credential will be used.
//
// SECURITY: Accessing X509 cert Credential is disabled for semitrust.
// We no longer need to demand for unmanaged code permissions.
// EnsurePrivateKey should do the right demand for us.
for (int i = 0; i < filteredCerts.Count; ++i)
{
clientCertificate = filteredCerts[i] as X509Certificate;
if ((selectedCert = EnsurePrivateKey(clientCertificate)) != null)
{
break;
}
clientCertificate = null;
selectedCert = null;
}
GlobalLog.Assert(((object)clientCertificate == (object)selectedCert) || clientCertificate.Equals(selectedCert), "AcquireClientCredentials()|'selectedCert' does not match 'clientCertificate'.");
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials() Selected Cert = " + (selectedCert == null ? "null" : selectedCert.Subject));
try
{
// Try to locate cached creds first.
//
// SECURITY: selectedCert ref if not null is a safe object that does not depend on possible **user** inherited X509Certificate type.
//
byte[] guessedThumbPrint = selectedCert == null ? null : selectedCert.GetCertHash();
SafeFreeCredentials cachedCredentialHandle = SslSessionsCache.TryCachedCredential(guessedThumbPrint, _sslProtocols, _serverMode, _encryptionPolicy);
// We can probably do some optimization here. If the selectedCert is returned by the delegate
// we can always go ahead and use the certificate to create our credential
// (instead of going anonymous as we do here).
if (sessionRestartAttempt && cachedCredentialHandle == null && selectedCert != null)
{
GlobalLog.Print("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials() Reset to anonymous session.");
// IIS does not renegotiate a restarted session if client cert is needed.
// So we don't want to reuse **anonymous** cached credential for a new SSL connection if the client has passed some certificate.
// The following block happens if client did specify a certificate but no cached creds were found in the cache.
// Since we don't restart a session the server side can still challenge for a client cert.
if ((object)clientCertificate != (object)selectedCert)
{
selectedCert.Dispose();
}
guessedThumbPrint = null;
selectedCert = null;
clientCertificate = null;
}
if (cachedCredentialHandle != null)
{
if (SecurityEventSource.Log.IsEnabled())
{
SecurityEventSource.Log.UsingCachedCredential(LoggingHash.HashInt(this));
}
_credentialsHandle = cachedCredentialHandle;
_selectedClientCertificate = clientCertificate;
cachedCred = true;
}
else
{
_credentialsHandle = SslStreamPal.AcquireCredentialsHandle(selectedCert, _sslProtocols, _encryptionPolicy, _serverMode);
thumbPrint = guessedThumbPrint; // Delay until here in case something above threw.
_selectedClientCertificate = clientCertificate;
}
}
finally
{
// An extra cert could have been created, dispose it now.
if (selectedCert != null && (object)clientCertificate != (object)selectedCert)
{
selectedCert.Dispose();
}
}
GlobalLog.Leave("SecureChannel#" + LoggingHash.HashString(this) + "::AcquireClientCredentials, cachedCreds = " + cachedCred.ToString(), LoggingHash.ObjectToString(_credentialsHandle));
return(cachedCred);
}
/// <devdoc>
/// <para>
/// Creates a new instance of the <see cref='System.Net.Sockets.SocketException'/> class with the default error code.
/// </para>
/// </devdoc>
public SocketException() : base(Marshal.GetLastWin32Error())
{
GlobalLog.Print("SocketException::.ctor() " + NativeErrorCode.ToString() + ":" + Message);
}
private unsafe SocketError InnerReleaseHandle()
{
int errorCode;
// If _blockable was set in BlockingRelease, it's safe to block here, which means
// we can honor the linger options set on the socket. It also means closesocket() might return WSAEWOULDBLOCK, in which
// case we need to do some recovery.
if (_blockable)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") Following 'blockable' branch.");
}
errorCode = Interop.Sys.Close(handle);
if (errorCode == -1)
{
errorCode = (int)Interop.Sys.GetLastError();
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") close()#1:" + errorCode.ToString());
}
#if DEBUG
_closeSocketHandle = handle;
_closeSocketResult = SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode);
#endif
// If it's not EWOULDBLOCK, there's no more recourse - we either succeeded or failed.
if (errorCode != (int)Interop.Error.EWOULDBLOCK)
{
return(SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode));
}
// The socket must be non-blocking with a linger timeout set.
// We have to set the socket to blocking.
errorCode = Interop.Sys.Fcntl.DangerousSetIsNonBlocking(handle, 0);
if (errorCode == 0)
{
// The socket successfully made blocking; retry the close().
errorCode = Interop.Sys.Close(handle);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") close()#2:" + errorCode.ToString());
}
#if DEBUG
_closeSocketHandle = handle;
_closeSocketResult = SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode);
#endif
return(SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode));
}
// The socket could not be made blocking; fall through to the regular abortive close.
}
// By default or if CloseAsIs() path failed, set linger timeout to zero to get an abortive close (RST).
var linger = new Interop.Sys.LingerOption {
OnOff = 1,
Seconds = 0
};
errorCode = (int)Interop.Sys.DangerousSetLingerOption((int)handle, &linger);
#if DEBUG
_closeSocketLinger = SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode);
#endif
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") setsockopt():" + errorCode.ToString());
}
if (errorCode != 0 && errorCode != (int)Interop.Error.EINVAL && errorCode != (int)Interop.Error.ENOPROTOOPT)
{
// Too dangerous to try closesocket() - it might block!
return(SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode));
}
errorCode = Interop.Sys.Close(handle);
#if DEBUG
_closeSocketHandle = handle;
_closeSocketResult = SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode);
#endif
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") close#3():" + (errorCode == -1 ? (int)Interop.Sys.GetLastError() : errorCode).ToString());
}
return(SocketPal.GetSocketErrorForErrorCode((Interop.Error)errorCode));
}
/// <devdoc>
/// <para>
/// Creates a new instance of the <see cref='System.Net.Sockets.SocketException'/> class with the specified error code.
/// </para>
/// </devdoc>
public SocketException(int errorCode) : base(errorCode)
{
GlobalLog.Print("SocketException::.ctor(int) " + NativeErrorCode.ToString() + ":" + Message);
}
GetChunkSize(IReadChunkBytes Source, out int chunkSize)
{
int BytesRead;
int Size;
int Current;
GlobalLog.Enter("GetChunkSize");
Size = 0;
//
// Loop while we have data. If we run out of data and exit the loop
// at the bottom, then we've run out of data and haven't found the
// length.
Current = Source.NextByte;
BytesRead = 0;
if (Current == 10 || Current == 13)
{
GlobalLog.Print(" Got Char: " + Current.ToString());
BytesRead++;
Current = Source.NextByte;
}
while (Current != -1)
{
// Get the next byte, and decode it.
if (Current >= '0' && Current <= '9')
{
// Normalize it to 0 based.
Current -= '0';
}
else
{
// If we're here, this might be a hex digit.
// If it is, normalize it to 10 based.
if (Current >= 'a' && Current <= 'f')
{
Current -= 'a';
}
else
{
if (Current >= 'A' && Current <= 'F')
{
Current -= 'A';
}
else
{
// Done with the decoding. If we haven't actually
// decoded a digit yet, we'll end up returning
// 0, which will signal the error.
// Push back the byte we read and didn't use.
Source.NextByte = Current;
chunkSize = Size;
// Return how many bytes we took.
GlobalLog.Print("*Size* = " + Size.ToString());
GlobalLog.Leave("GetChunkSize", BytesRead);
return(BytesRead);
}
}
// If we get here we've had an A-F digit, add 10
// to it to normalize it.
Current += 10;
}
// Update the size and our state.
Size *= 16;
Size += Current;
BytesRead++;
Current = Source.NextByte;
}
chunkSize = Size;
GlobalLog.Print("*Size* = " + Size.ToString());
GlobalLog.Leave("GetChunkSize", -1);
return(-1);
}
protected SocketException(SerializationInfo serializationInfo, StreamingContext streamingContext)
: base(serializationInfo, streamingContext)
{
GlobalLog.Print("SocketException::.ctor(serialized) " + NativeErrorCode.ToString() + ":" + Message);
}
private SocketError InnerReleaseHandle()
{
SocketError errorCode;
// If _blockable was set in BlockingRelease, it's safe to block here, which means
// we can honor the linger options set on the socket. It also means closesocket() might return WSAEWOULDBLOCK, in which
// case we need to do some recovery.
if (_blockable)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") Following 'blockable' branch.");
}
errorCode = Interop.Winsock.closesocket(handle);
#if DEBUG
_closeSocketHandle = handle;
_closeSocketResult = errorCode;
#endif
if (errorCode == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") closesocket()#1:" + errorCode.ToString());
}
// If it's not WSAEWOULDBLOCK, there's no more recourse - we either succeeded or failed.
if (errorCode != SocketError.WouldBlock)
{
return(errorCode);
}
// The socket must be non-blocking with a linger timeout set.
// We have to set the socket to blocking.
int nonBlockCmd = 0;
errorCode = Interop.Winsock.ioctlsocket(
handle,
Interop.Winsock.IoctlSocketConstants.FIONBIO,
ref nonBlockCmd);
if (errorCode == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") ioctlsocket()#1:" + errorCode.ToString());
}
// This can fail if there's a pending WSAEventSelect. Try canceling it.
if (errorCode == SocketError.InvalidArgument)
{
errorCode = Interop.Winsock.WSAEventSelect(
handle,
IntPtr.Zero,
Interop.Winsock.AsyncEventBits.FdNone);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") WSAEventSelect():" + (errorCode == SocketError.SocketError ? (SocketError)Marshal.GetLastWin32Error() : errorCode).ToString());
}
// Now retry the ioctl.
errorCode = Interop.Winsock.ioctlsocket(
handle,
Interop.Winsock.IoctlSocketConstants.FIONBIO,
ref nonBlockCmd);
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") ioctlsocket#2():" + (errorCode == SocketError.SocketError ? (SocketError)Marshal.GetLastWin32Error() : errorCode).ToString());
}
}
// If that succeeded, try again.
if (errorCode == SocketError.Success)
{
errorCode = Interop.Winsock.closesocket(handle);
#if DEBUG
_closeSocketHandle = handle;
_closeSocketResult = errorCode;
#endif
if (errorCode == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") closesocket#2():" + errorCode.ToString());
}
// If it's not WSAEWOULDBLOCK, there's no more recourse - we either succeeded or failed.
if (errorCode != SocketError.WouldBlock)
{
return(errorCode);
}
}
// It failed. Fall through to the regular abortive close.
}
// By default or if CloseAsIs() path failed, set linger timeout to zero to get an abortive close (RST).
Interop.Winsock.Linger lingerStruct;
lingerStruct.OnOff = 1;
lingerStruct.Time = 0;
errorCode = Interop.Winsock.setsockopt(
handle,
SocketOptionLevel.Socket,
SocketOptionName.Linger,
ref lingerStruct,
4);
#if DEBUG
_closeSocketLinger = errorCode;
#endif
if (errorCode == SocketError.SocketError)
{
errorCode = (SocketError)Marshal.GetLastWin32Error();
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") setsockopt():" + errorCode.ToString());
}
if (errorCode != SocketError.Success && errorCode != SocketError.InvalidArgument && errorCode != SocketError.ProtocolOption)
{
// Too dangerous to try closesocket() - it might block!
return(errorCode);
}
errorCode = Interop.Winsock.closesocket(handle);
#if DEBUG
_closeSocketHandle = handle;
_closeSocketResult = errorCode;
#endif
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SafeCloseSocket::ReleaseHandle(handle:" + handle.ToString("x") + ") closesocket#3():" + (errorCode == SocketError.SocketError ? (SocketError)Marshal.GetLastWin32Error() : errorCode).ToString());
}
return(errorCode);
}
internal static int Encrypt(
SafeDeleteContext securityContext,
byte[] buffer,
int offset,
int count,
bool isConfidential,
bool isNtlm,
ref byte[] output,
uint sequenceNumber)
{
SecSizes sizes = SSPIWrapper.QueryContextAttributes(
GlobalSSPI.SSPIAuth,
securityContext,
Interop.SspiCli.ContextAttribute.Sizes
) as SecSizes;
try
{
int maxCount = checked (Int32.MaxValue - 4 - sizes.BlockSize - sizes.SecurityTrailer);
if (count > maxCount || count < 0)
{
throw new ArgumentOutOfRangeException(nameof(count), SR.Format(SR.net_io_out_range, maxCount));
}
}
catch (Exception e)
{
if (!ExceptionCheck.IsFatal(e))
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Assert("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Encrypt", "Arguments out of range.");
}
Debug.Fail("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Encrypt", "Arguments out of range.");
}
throw;
}
int resultSize = count + sizes.SecurityTrailer + sizes.BlockSize;
if (output == null || output.Length < resultSize + 4)
{
output = new byte[resultSize + 4];
}
// Make a copy of user data for in-place encryption.
Buffer.BlockCopy(buffer, offset, output, 4 + sizes.SecurityTrailer, count);
// Prepare buffers TOKEN(signature), DATA and Padding.
var securityBuffer = new SecurityBuffer[3];
securityBuffer[0] = new SecurityBuffer(output, 4, sizes.SecurityTrailer, SecurityBufferType.Token);
securityBuffer[1] = new SecurityBuffer(output, 4 + sizes.SecurityTrailer, count, SecurityBufferType.Data);
securityBuffer[2] = new SecurityBuffer(output, 4 + sizes.SecurityTrailer + count, sizes.BlockSize, SecurityBufferType.Padding);
int errorCode;
if (isConfidential)
{
errorCode = SSPIWrapper.EncryptMessage(GlobalSSPI.SSPIAuth, securityContext, securityBuffer, sequenceNumber);
}
else
{
if (isNtlm)
{
securityBuffer[1].type |= SecurityBufferType.ReadOnlyFlag;
}
errorCode = SSPIWrapper.MakeSignature(GlobalSSPI.SSPIAuth, securityContext, securityBuffer, 0);
}
if (errorCode != 0)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("NTAuthentication#" + LoggingHash.HashString(securityContext) + "::Encrypt() throw Error = " + errorCode.ToString("x", NumberFormatInfo.InvariantInfo));
}
throw new Win32Exception(errorCode);
}
// Compacting the result.
resultSize = securityBuffer[0].size;
bool forceCopy = false;
if (resultSize != sizes.SecurityTrailer)
{
forceCopy = true;
Buffer.BlockCopy(output, securityBuffer[1].offset, output, 4 + resultSize, securityBuffer[1].size);
}
resultSize += securityBuffer[1].size;
if (securityBuffer[2].size != 0 && (forceCopy || resultSize != (count + sizes.SecurityTrailer)))
{
Buffer.BlockCopy(output, securityBuffer[2].offset, output, 4 + resultSize, securityBuffer[2].size);
}
resultSize += securityBuffer[2].size;
unchecked
{
output[0] = (byte)((resultSize) & 0xFF);
output[1] = (byte)(((resultSize) >> 8) & 0xFF);
output[2] = (byte)(((resultSize) >> 16) & 0xFF);
output[3] = (byte)(((resultSize) >> 24) & 0xFF);
}
return(resultSize + 4);
}
private unsafe static void CompletionPortCallback(uint errorCode, uint numBytes, NativeOverlapped *nativeOverlapped)
{
#if DEBUG
GlobalLog.SetThreadSource(ThreadKinds.CompletionPort);
using (GlobalLog.SetThreadKind(ThreadKinds.System))
{
#endif
BaseOverlappedAsyncResult asyncResult = (BaseOverlappedAsyncResult)ThreadPoolBoundHandle.GetNativeOverlappedState(nativeOverlapped);
object returnObject = null;
if (asyncResult.InternalPeekCompleted)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.AssertFormat("BaseOverlappedAsyncResult#{0}::CompletionPortCallback()|asyncResult.IsCompleted", LoggingHash.HashString(asyncResult));
}
Debug.Fail("BaseOverlappedAsyncResult#" + LoggingHash.HashString(asyncResult) + "::CompletionPortCallback()|asyncResult.IsCompleted");
}
if (GlobalLog.IsEnabled)
{
GlobalLog.Print(
"BaseOverlappedAsyncResult#" + LoggingHash.HashString(asyncResult) + "::CompletionPortCallback" +
" errorCode:" + errorCode.ToString() +
" numBytes:" + numBytes.ToString() +
" pOverlapped:" + ((int)nativeOverlapped).ToString());
}
// Complete the IO and invoke the user's callback.
SocketError socketError = (SocketError)errorCode;
if (socketError != SocketError.Success && socketError != SocketError.OperationAborted)
{
// There are cases where passed errorCode does not reflect the details of the underlined socket error.
// "So as of today, the key is the difference between WSAECONNRESET and ConnectionAborted,
// .e.g remote party or network causing the connection reset or something on the local host (e.g. closesocket
// or receiving data after shutdown (SD_RECV)). With Winsock/TCP stack rewrite in longhorn, there may
// be other differences as well."
Socket socket = asyncResult.AsyncObject as Socket;
if (socket == null)
{
socketError = SocketError.NotSocket;
}
else if (socket.CleanedUp)
{
socketError = SocketError.OperationAborted;
}
else
{
try
{
// The async IO completed with a failure.
// Here we need to call WSAGetOverlappedResult() just so Marshal.GetLastWin32Error() will return the correct error.
SocketFlags ignore;
bool success = Interop.Winsock.WSAGetOverlappedResult(
socket.SafeHandle,
asyncResult.NativeOverlapped,
out numBytes,
false,
out ignore);
if (!success)
{
socketError = (SocketError)Marshal.GetLastWin32Error();
if (socketError == 0)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.AssertFormat("BaseOverlappedAsyncResult#{0}::CompletionPortCallback()|socketError:0 numBytes:{1}", LoggingHash.HashString(asyncResult), numBytes);
}
Debug.Fail("BaseOverlappedAsyncResult#" + LoggingHash.HashString(asyncResult) + "::CompletionPortCallback()|socketError:0 numBytes:" + numBytes);
}
}
if (success)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.AssertFormat("BaseOverlappedAsyncResult#{0}::CompletionPortCallback()|Unexpectedly succeeded. errorCode:{1} numBytes:{2}", LoggingHash.HashString(asyncResult), errorCode, numBytes);
}
Debug.Fail("BaseOverlappedAsyncResult#" + LoggingHash.HashString(asyncResult) + "::CompletionPortCallback()|Unexpectedly succeeded. errorCode:" + errorCode + " numBytes: " + numBytes);
}
}
catch (ObjectDisposedException)
{
// CleanedUp check above does not always work since this code is subject to race conditions
socketError = SocketError.OperationAborted;
}
}
}
asyncResult.ErrorCode = (int)socketError;
returnObject = asyncResult.PostCompletion((int)numBytes);
asyncResult.ReleaseUnmanagedStructures();
asyncResult.InvokeCallback(returnObject);
#if DEBUG
}
#endif
}
public static unsafe SecurityStatusPal EncryptMessage(SafeDeleteContext securityContext, byte[] input, int offset, int size, int headerSize, int trailerSize, ref byte[] output, out int resultSize)
{
// Ensure that there is sufficient space for the message output.
int bufferSizeNeeded;
try
{
bufferSizeNeeded = checked (size + headerSize + trailerSize);
}
catch
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Assert("SslStreamPal.Windows: SecureChannel#" + LoggingHash.HashString(securityContext) + "::Encrypt", "Arguments out of range.");
}
Debug.Fail("SslStreamPal.Windows: SecureChannel#" + LoggingHash.HashString(securityContext) + "::Encrypt", "Arguments out of range.");
throw;
}
if (output == null || output.Length < bufferSizeNeeded)
{
output = new byte[bufferSizeNeeded];
}
// Copy the input into the output buffer to prepare for SCHANNEL's expectations
Buffer.BlockCopy(input, offset, output, headerSize, size);
const int NumSecBuffers = 4; // header + data + trailer + empty
var unmanagedBuffer = stackalloc Interop.SspiCli.SecBuffer[NumSecBuffers];
var sdcInOut = new Interop.SspiCli.SecBufferDesc(NumSecBuffers);
sdcInOut.pBuffers = unmanagedBuffer;
fixed(byte *outputPtr = output)
{
Interop.SspiCli.SecBuffer *headerSecBuffer = &unmanagedBuffer[0];
headerSecBuffer->BufferType = SecurityBufferType.SECBUFFER_STREAM_HEADER;
headerSecBuffer->pvBuffer = (IntPtr)outputPtr;
headerSecBuffer->cbBuffer = headerSize;
Interop.SspiCli.SecBuffer *dataSecBuffer = &unmanagedBuffer[1];
dataSecBuffer->BufferType = SecurityBufferType.SECBUFFER_DATA;
dataSecBuffer->pvBuffer = (IntPtr)(outputPtr + headerSize);
dataSecBuffer->cbBuffer = size;
Interop.SspiCli.SecBuffer *trailerSecBuffer = &unmanagedBuffer[2];
trailerSecBuffer->BufferType = SecurityBufferType.SECBUFFER_STREAM_TRAILER;
trailerSecBuffer->pvBuffer = (IntPtr)(outputPtr + headerSize + size);
trailerSecBuffer->cbBuffer = trailerSize;
Interop.SspiCli.SecBuffer *emptySecBuffer = &unmanagedBuffer[3];
emptySecBuffer->BufferType = SecurityBufferType.SECBUFFER_EMPTY;
emptySecBuffer->cbBuffer = 0;
emptySecBuffer->pvBuffer = IntPtr.Zero;
int errorCode = GlobalSSPI.SSPISecureChannel.EncryptMessage(securityContext, sdcInOut, 0);
if (errorCode != 0)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("SslStreamPal.Windows: SecureChannel#" + LoggingHash.HashString(securityContext) + "::Encrypt ERROR" + errorCode.ToString("x"));
}
resultSize = 0;
return(SecurityStatusAdapterPal.GetSecurityStatusPalFromNativeInt(errorCode));
}
Debug.Assert(headerSecBuffer->cbBuffer >= 0 && dataSecBuffer->cbBuffer >= 0 && trailerSecBuffer->cbBuffer >= 0);
Debug.Assert(checked (headerSecBuffer->cbBuffer + dataSecBuffer->cbBuffer + trailerSecBuffer->cbBuffer) <= output.Length);
resultSize = checked (headerSecBuffer->cbBuffer + dataSecBuffer->cbBuffer + trailerSecBuffer->cbBuffer);
return(new SecurityStatusPal(SecurityStatusPalErrorCode.OK));
}
}