| public static Enter ( object thisOrContextObject, object arg1 = null, object arg2 = null, object arg3 = null ) : void | ||
| thisOrContextObject | object | |
| arg1 | object | |
| arg2 | object | |
| arg3 | object | |
| Résultat | void | |
public static IPHostEntry EndResolve(IAsyncResult asyncResult)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null, asyncResult);
}
IPHostEntry ipHostEntry;
try
{
ipHostEntry = TaskToApm.End <IPHostEntry>(asyncResult);
}
catch (SocketException ex)
{
IPAddress?address = asyncResult switch
{
Task t => t.AsyncState as IPAddress,
TaskToApm.TaskAsyncResult twar => twar._task.AsyncState as IPAddress,
_ => null
};
if (address is null)
{
throw; // BeginResolve was called with a HostName, not an IPAddress
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(null, ex);
}
ipHostEntry = CreateHostEntryForAddress(address);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null, ipHostEntry);
}
return(ipHostEntry);
}
} // EndGetHostByName()
public static IPHostEntry GetHostEntry(string hostNameOrAddress)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Enter(NetEventSource.ComponentType.Socket, "DNS", "GetHostEntry", hostNameOrAddress);
}
NameResolutionPal.EnsureSocketsAreInitialized();
if (hostNameOrAddress == null)
{
throw new ArgumentNullException(nameof(hostNameOrAddress));
}
// See if it's an IP Address.
IPAddress address;
IPHostEntry ipHostEntry;
if (IPAddress.TryParse(hostNameOrAddress, out address))
{
if (address.Equals(IPAddress.Any) || address.Equals(IPAddress.IPv6Any))
{
throw new ArgumentException(SR.Format(SR.net_invalid_ip_addr, nameof(hostNameOrAddress)));
}
ipHostEntry = InternalGetHostByAddress(address, true);
}
else
{
ipHostEntry = InternalGetHostByName(hostNameOrAddress, true);
}
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Socket, "DNS", "GetHostEntry", ipHostEntry);
}
return(ipHostEntry);
}
public void Start()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
lock (_internalLock)
{
try
{
CheckDisposed();
if (_state == State.Started)
{
return;
}
HttpEndPointManager.AddListener(this);
_state = State.Started;
}
catch (Exception exception)
{
_state = State.Closed;
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, $"Start {exception}");
}
throw;
}
finally
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
}
}
} // GetHostEntry
public static IPAddress[] GetHostAddresses(string hostNameOrAddress)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null, hostNameOrAddress);
}
NameResolutionPal.EnsureSocketsAreInitialized();
if (hostNameOrAddress == null)
{
throw new ArgumentNullException(nameof(hostNameOrAddress));
}
// See if it's an IP Address.
IPAddress address;
IPAddress[] addresses;
if (IPAddress.TryParse(hostNameOrAddress, out address))
{
if (address.Equals(IPAddress.Any) || address.Equals(IPAddress.IPv6Any))
{
throw new ArgumentException(SR.Format(SR.net_invalid_ip_addr, nameof(hostNameOrAddress)));
}
addresses = new IPAddress[] { address };
}
else
{
// InternalGetHostByName works with IP addresses (and avoids a reverse-lookup), but we need
// explicit handling in order to do the ArgumentException and guarantee the behavior.
addresses = InternalGetHostByName(hostNameOrAddress).AddressList;
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null, addresses);
}
return(addresses);
}
private void Initialize(bool isServer, string package, NetworkCredential credential, string?spn, ContextFlagsPal requestedContextFlags, ChannelBinding?channelBinding)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this, package, spn, requestedContextFlags);
}
_tokenSize = NegotiateStreamPal.QueryMaxTokenSize(package);
_isServer = isServer;
_spn = spn;
_securityContext = null;
_requestedContextFlags = requestedContextFlags;
_package = package;
_channelBinding = channelBinding;
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"Peer SPN-> '{_spn}'");
}
//
// Check if we're using DefaultCredentials.
//
Debug.Assert(CredentialCache.DefaultCredentials == CredentialCache.DefaultNetworkCredentials);
if (credential == CredentialCache.DefaultCredentials)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "using DefaultCredentials");
}
_credentialsHandle = NegotiateStreamPal.AcquireDefaultCredential(package, _isServer);
}
else
{
_credentialsHandle = NegotiateStreamPal.AcquireCredentialsHandle(package, _isServer, credential);
}
}
private static unsafe uint Verify(SafeX509ChainHandle chainContext, ref Interop.Crypt32.CERT_CHAIN_POLICY_PARA cpp)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(chainContext, cpp.dwFlags);
}
Interop.Crypt32.CERT_CHAIN_POLICY_STATUS status = default;
status.cbSize = (uint)sizeof(Interop.Crypt32.CERT_CHAIN_POLICY_STATUS);
bool errorCode =
Interop.Crypt32.CertVerifyCertificateChainPolicy(
(IntPtr)Interop.Crypt32.CertChainPolicy.CERT_CHAIN_POLICY_SSL,
chainContext,
ref cpp,
ref status);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(chainContext, $"CertVerifyCertificateChainPolicy returned: {errorCode}. Status: {status.dwError}");
}
return(status.dwError);
}
public X509Certificate2 GetClientCertificate()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
try
{
ProcessClientCertificate();
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"_clientCertificate:{_clientCertificate}");
}
}
finally
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
return(_clientCertificate);
}
public HttpListener()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
_state = State.Stopped;
_internalLock = new object();
_defaultServiceNames = new ServiceNameStore();
_timeoutManager = new HttpListenerTimeoutManager(this);
_prefixes = new HttpListenerPrefixCollection(this);
// default: no CBT checks on any platform (appcompat reasons); applies also to PolicyEnforcement
// config element
_extendedProtectionPolicy = new ExtendedProtectionPolicy(PolicyEnforcement.Never);
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
protected override void Dispose(bool disposing)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
try
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "_closed:" + _closed);
}
_closed = true;
}
finally
{
base.Dispose(disposing);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
public void Stop()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
try
{
lock (_internalLock)
{
CheckDisposed();
if (_state == State.Stopped)
{
return;
}
Close(false);
_state = State.Stopped;
}
}
catch (Exception exception)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, $"Stop {exception}");
}
throw;
}
finally
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
}
public void Abort()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
try
{
if (_responseState >= ResponseState.Closed)
{
return;
}
_responseState = ResponseState.Closed;
HttpListenerContext.Abort();
}
finally
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
}
private void Dispose()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
lock (_internalLock)
{
try
{
if (_state == State.Closed)
{
return;
}
Close(true);
}
catch (Exception exception)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, $"Dispose {exception}");
}
throw;
}
finally
{
_state = State.Closed;
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
}
}
private static IPHostEntry InternalGetHostByName(string hostName)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null, hostName);
}
IPHostEntry ipHostEntry = null;
ValidateHostName(hostName);
int nativeErrorCode;
SocketError errorCode = NameResolutionPal.TryGetAddrInfo(hostName, out ipHostEntry, out nativeErrorCode);
if (errorCode != SocketError.Success)
{
throw SocketExceptionFactory.CreateSocketException(errorCode, nativeErrorCode);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null, ipHostEntry);
}
return(ipHostEntry);
} // GetHostByName
public static IPHostEntry GetHostEntry(string hostNameOrAddress)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null, hostNameOrAddress);
}
NameResolutionPal.EnsureSocketsAreInitialized();
if (hostNameOrAddress is null)
{
throw new ArgumentNullException(nameof(hostNameOrAddress));
}
// See if it's an IP Address.
IPHostEntry ipHostEntry;
if (IPAddress.TryParse(hostNameOrAddress, out IPAddress address))
{
if (address.Equals(IPAddress.Any) || address.Equals(IPAddress.IPv6Any))
{
throw new ArgumentException(SR.Format(SR.net_invalid_ip_addr, nameof(hostNameOrAddress)));
}
ipHostEntry = GetHostEntryCore(address);
}
else
{
ipHostEntry = GetHostEntryCore(hostNameOrAddress);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null, ipHostEntry);
}
return(ipHostEntry);
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int size, AsyncCallback callback, object state)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "buffer.Length:" + buffer.Length + " size:" + size + " offset:" + offset);
}
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
if (size == 0 || _closed)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
HttpRequestStreamAsyncResult result = new HttpRequestStreamAsyncResult(this, state, callback);
result.InvokeCallback((uint)0);
return(result);
}
HttpRequestStreamAsyncResult asyncResult = null;
uint dataRead = 0;
if (_dataChunkIndex != -1)
{
dataRead = Interop.HttpApi.GetChunks(_httpContext.Request.RequestBuffer, _httpContext.Request.OriginalBlobAddress, ref _dataChunkIndex, ref _dataChunkOffset, buffer, offset, size);
if (_dataChunkIndex != -1 && dataRead == size)
{
asyncResult = new HttpRequestStreamAsyncResult(_httpContext.RequestQueueBoundHandle, this, state, callback, buffer, offset, (uint)size, 0);
asyncResult.InvokeCallback(dataRead);
}
}
if (_dataChunkIndex == -1 && dataRead < size)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "size:" + size + " offset:" + offset);
}
uint statusCode = 0;
offset += (int)dataRead;
size -= (int)dataRead;
//the http.sys team recommends that we limit the size to 128kb
if (size > MaxReadSize)
{
size = MaxReadSize;
}
asyncResult = new HttpRequestStreamAsyncResult(_httpContext.RequestQueueBoundHandle, this, state, callback, buffer, offset, (uint)size, dataRead);
uint bytesReturned;
try
{
fixed(byte *pBuffer = buffer)
{
// issue unmanaged blocking call
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Calling Interop.HttpApi.HttpReceiveRequestEntityBody");
}
uint flags = 0;
if (!_inOpaqueMode)
{
flags = (uint)Interop.HttpApi.HTTP_FLAGS.HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY;
}
statusCode =
Interop.HttpApi.HttpReceiveRequestEntityBody(
_httpContext.RequestQueueHandle,
_httpContext.RequestId,
flags,
asyncResult._pPinnedBuffer,
(uint)size,
out bytesReturned,
asyncResult._pOverlapped);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Call to Interop.HttpApi.HttpReceiveRequestEntityBody returned:" + statusCode + " dataRead:" + dataRead);
}
}
}
catch (Exception e)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, e.ToString());
}
asyncResult.InternalCleanup();
throw;
}
if (statusCode != Interop.HttpApi.ERROR_SUCCESS && statusCode != Interop.HttpApi.ERROR_IO_PENDING)
{
asyncResult.InternalCleanup();
if (statusCode == Interop.HttpApi.ERROR_HANDLE_EOF)
{
asyncResult = new HttpRequestStreamAsyncResult(this, state, callback, dataRead);
asyncResult.InvokeCallback((uint)0);
}
else
{
Exception exception = new HttpListenerException((int)statusCode);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, exception.ToString());
}
asyncResult.InternalCleanup();
throw exception;
}
}
else if (statusCode == Interop.HttpApi.ERROR_SUCCESS &&
HttpListener.SkipIOCPCallbackOnSuccess)
{
// IO operation completed synchronously - callback won't be called to signal completion.
asyncResult.IOCompleted(statusCode, bytesReturned);
}
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
return(asyncResult);
}
public override void Write(byte[] buffer, int offset, int size)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
NetEventSource.Info(this, "buffer.Length:" + buffer.Length + " size:" + size + " offset:" + offset);
}
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
Interop.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (_closed || (size == 0 && _leftToWrite != 0))
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
return;
}
if (_leftToWrite >= 0 && size > _leftToWrite)
{
throw new ProtocolViolationException(SR.net_entitytoobig);
}
uint statusCode;
uint dataToWrite = (uint)size;
SafeLocalAllocHandle bufferAsIntPtr = null;
IntPtr pBufferAsIntPtr = IntPtr.Zero;
bool sentHeaders = _httpContext.Response.SentHeaders;
try
{
if (size == 0)
{
statusCode = _httpContext.Response.SendHeaders(null, null, flags, false);
}
else
{
fixed(byte *pDataBuffer = buffer)
{
byte *pBuffer = pDataBuffer;
if (_httpContext.Response.BoundaryType == BoundaryType.Chunked)
{
string chunkHeader = size.ToString("x", CultureInfo.InvariantCulture);
dataToWrite = dataToWrite + (uint)(chunkHeader.Length + 4);
bufferAsIntPtr = SafeLocalAllocHandle.LocalAlloc((int)dataToWrite);
pBufferAsIntPtr = bufferAsIntPtr.DangerousGetHandle();
for (int i = 0; i < chunkHeader.Length; i++)
{
Marshal.WriteByte(pBufferAsIntPtr, i, (byte)chunkHeader[i]);
}
Marshal.WriteInt16(pBufferAsIntPtr, chunkHeader.Length, 0x0A0D);
Marshal.Copy(buffer, offset, pBufferAsIntPtr + chunkHeader.Length + 2, size);
Marshal.WriteInt16(pBufferAsIntPtr, (int)(dataToWrite - 2), 0x0A0D);
pBuffer = (byte *)pBufferAsIntPtr;
offset = 0;
}
Interop.HttpApi.HTTP_DATA_CHUNK dataChunk = new Interop.HttpApi.HTTP_DATA_CHUNK();
dataChunk.DataChunkType = Interop.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
dataChunk.pBuffer = (byte *)(pBuffer + offset);
dataChunk.BufferLength = dataToWrite;
flags |= _leftToWrite == size ? Interop.HttpApi.HTTP_FLAGS.NONE : Interop.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_MORE_DATA;
if (!sentHeaders)
{
statusCode = _httpContext.Response.SendHeaders(&dataChunk, null, flags, false);
}
else
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Calling Interop.HttpApi.HttpSendResponseEntityBody");
}
statusCode =
Interop.HttpApi.HttpSendResponseEntityBody(
_httpContext.RequestQueueHandle,
_httpContext.RequestId,
(uint)flags,
1,
&dataChunk,
null,
SafeLocalAllocHandle.Zero,
0,
null,
null);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Call to Interop.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
}
if (_httpContext.Listener.IgnoreWriteExceptions)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Write() suppressing error");
}
statusCode = Interop.HttpApi.ERROR_SUCCESS;
}
}
}
}
}
finally
{
// free unmanaged buffer
bufferAsIntPtr?.Close();
}
if (statusCode != Interop.HttpApi.ERROR_SUCCESS && statusCode != Interop.HttpApi.ERROR_HANDLE_EOF)
{
Exception exception = new HttpListenerException((int)statusCode);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, exception.ToString());
}
_closed = true;
_httpContext.Abort();
throw exception;
}
UpdateAfterWrite(dataToWrite);
if (NetEventSource.IsEnabled)
{
NetEventSource.DumpBuffer(this, buffer, offset, (int)dataToWrite);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
// Accepts an incoming binary security blob and returns an outgoing binary security blob.
internal byte[] GetOutgoingBlob(byte[] incomingBlob, bool throwOnError, out SecurityStatusPal statusCode)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this, incomingBlob);
}
SecurityBuffer[] inSecurityBufferArray = null;
if (incomingBlob != null && _channelBinding != null)
{
inSecurityBufferArray = new SecurityBuffer[2]
{
new SecurityBuffer(incomingBlob, SecurityBufferType.SECBUFFER_TOKEN),
new SecurityBuffer(_channelBinding)
};
}
else if (incomingBlob != null)
{
inSecurityBufferArray = new SecurityBuffer[1] {
new SecurityBuffer(incomingBlob, SecurityBufferType.SECBUFFER_TOKEN)
};
}
else if (_channelBinding != null)
{
inSecurityBufferArray = new SecurityBuffer[1] {
new SecurityBuffer(_channelBinding)
};
}
var outSecurityBuffer = new SecurityBuffer(_tokenSize, SecurityBufferType.SECBUFFER_TOKEN);
bool firstTime = _securityContext == null;
try
{
if (!_isServer)
{
// client session
statusCode = NegotiateStreamPal.InitializeSecurityContext(
_credentialsHandle,
ref _securityContext,
_spn,
_requestedContextFlags,
inSecurityBufferArray,
outSecurityBuffer,
ref _contextFlags);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"SSPIWrapper.InitializeSecurityContext() returns statusCode:0x{((int)statusCode.ErrorCode):x8} ({statusCode})");
}
if (statusCode.ErrorCode == SecurityStatusPalErrorCode.CompleteNeeded)
{
var inSecurityBuffers = new SecurityBuffer[1];
inSecurityBuffers[0] = outSecurityBuffer;
statusCode = NegotiateStreamPal.CompleteAuthToken(ref _securityContext, inSecurityBuffers);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"SSPIWrapper.CompleteAuthToken() returns statusCode:0x{((int)statusCode.ErrorCode):x8} ({statusCode})");
}
outSecurityBuffer.token = null;
}
}
else
{
// Server session.
statusCode = NegotiateStreamPal.AcceptSecurityContext(
_credentialsHandle,
ref _securityContext,
_requestedContextFlags,
inSecurityBufferArray,
outSecurityBuffer,
ref _contextFlags);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"SSPIWrapper.AcceptSecurityContext() returns statusCode:0x{((int)statusCode.ErrorCode):x8} ({statusCode})");
}
}
}
finally
{
//
// Assuming the ISC or ASC has referenced the credential on the first successful call,
// we want to decrement the effective ref count by "disposing" it.
// The real dispose will happen when the security context is closed.
// Note if the first call was not successful the handle is physically destroyed here.
//
if (firstTime && _credentialsHandle != null)
{
_credentialsHandle.Dispose();
}
}
if (((int)statusCode.ErrorCode >= (int)SecurityStatusPalErrorCode.OutOfMemory))
{
CloseContext();
_isCompleted = true;
if (throwOnError)
{
Exception exception = NegotiateStreamPal.CreateExceptionFromError(statusCode);
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this, exception);
}
throw exception;
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this, $"null statusCode:0x{((int)statusCode.ErrorCode):x8} ({statusCode})");
}
return(null);
}
else if (firstTime && _credentialsHandle != null)
{
// Cache until it is pushed out by newly incoming handles.
SSPIHandleCache.CacheCredential(_credentialsHandle);
}
// The return value will tell us correctly if the handshake is over or not
if (statusCode.ErrorCode == SecurityStatusPalErrorCode.OK)
{
// Success.
_isCompleted = true;
}
else if (NetEventSource.IsEnabled)
{
// We need to continue.
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"need continue statusCode:0x{((int)statusCode.ErrorCode):x8} ({statusCode}) _securityContext:{_securityContext}");
}
}
if (NetEventSource.IsEnabled)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this, $"IsCompleted: {IsCompleted}");
}
}
return(outSecurityBuffer.token);
}
public override int Read([In, Out] byte[] buffer, int offset, int size)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
NetEventSource.Info(this, "size:" + size + " offset:" + offset);
}
if (buffer == null)
{
throw new ArgumentNullException(nameof(buffer));
}
if (offset < 0 || offset > buffer.Length)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
if (size < 0 || size > buffer.Length - offset)
{
throw new ArgumentOutOfRangeException(nameof(size));
}
if (size == 0 || _closed)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this, "dataRead:0");
}
return(0);
}
uint dataRead = 0;
if (_dataChunkIndex != -1)
{
dataRead = Interop.HttpApi.GetChunks(_httpContext.Request.RequestBuffer, _httpContext.Request.OriginalBlobAddress, ref _dataChunkIndex, ref _dataChunkOffset, buffer, offset, size);
}
if (_dataChunkIndex == -1 && dataRead < size)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "size:" + size + " offset:" + offset);
}
uint statusCode = 0;
uint extraDataRead = 0;
offset += (int)dataRead;
size -= (int)dataRead;
//the http.sys team recommends that we limit the size to 128kb
if (size > MaxReadSize)
{
size = MaxReadSize;
}
fixed(byte *pBuffer = buffer)
{
// issue unmanaged blocking call
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Calling Interop.HttpApi.HttpReceiveRequestEntityBody");
}
uint flags = 0;
if (!_inOpaqueMode)
{
flags = (uint)Interop.HttpApi.HTTP_FLAGS.HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY;
}
statusCode =
Interop.HttpApi.HttpReceiveRequestEntityBody(
_httpContext.RequestQueueHandle,
_httpContext.RequestId,
flags,
(void *)(pBuffer + offset),
(uint)size,
out extraDataRead,
null);
dataRead += extraDataRead;
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Call to Interop.HttpApi.HttpReceiveRequestEntityBody returned:" + statusCode + " dataRead:" + dataRead);
}
}
if (statusCode != Interop.HttpApi.ERROR_SUCCESS && statusCode != Interop.HttpApi.ERROR_HANDLE_EOF)
{
Exception exception = new HttpListenerException((int)statusCode);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, exception.ToString());
}
throw exception;
}
UpdateAfterRead(statusCode, dataRead);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.DumpBuffer(this, buffer, offset, (int)dataRead);
NetEventSource.Info(this, "returning dataRead:" + dataRead);
NetEventSource.Exit(this, "dataRead:" + dataRead);
}
return((int)dataRead);
}
public static object QueryContextAttributes(SSPIInterface secModule, SafeDeleteContext securityContext, Interop.SspiCli.ContextAttribute contextAttribute, out int errorCode)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null, contextAttribute);
}
int nativeBlockSize = IntPtr.Size;
Type handleType = null;
switch (contextAttribute)
{
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_SIZES:
nativeBlockSize = SecPkgContext_Sizes.SizeOf;
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_STREAM_SIZES:
nativeBlockSize = SecPkgContext_StreamSizes.SizeOf;
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_NAMES:
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_PACKAGE_INFO:
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_NEGOTIATION_INFO:
handleType = typeof(SafeFreeContextBuffer);
unsafe
{
nativeBlockSize = sizeof(SecPkgContext_NegotiationInfoW);
}
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_CLIENT_SPECIFIED_TARGET:
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_REMOTE_CERT_CONTEXT:
handleType = typeof(SafeFreeCertContext);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_LOCAL_CERT_CONTEXT:
handleType = typeof(SafeFreeCertContext);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_ISSUER_LIST_EX:
nativeBlockSize = Marshal.SizeOf <Interop.SspiCli.SecPkgContext_IssuerListInfoEx>();
handleType = typeof(SafeFreeContextBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_CONNECTION_INFO:
nativeBlockSize = Marshal.SizeOf <SecPkgContext_ConnectionInfo>();
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_APPLICATION_PROTOCOL:
nativeBlockSize = Marshal.SizeOf <Interop.SecPkgContext_ApplicationProtocol>();
break;
default:
throw new ArgumentException(System.StringsHelper.Format(Strings.net_invalid_enum, nameof(contextAttribute)), nameof(contextAttribute));
}
SafeHandle sspiHandle = null;
object attribute = null;
try
{
var nativeBuffer = new byte[nativeBlockSize];
errorCode = secModule.QueryContextAttributes(securityContext, contextAttribute, nativeBuffer, handleType, out sspiHandle);
if (errorCode != 0)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null, $"ERROR = {ErrorDescription(errorCode)}");
}
return(null);
}
switch (contextAttribute)
{
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_SIZES:
attribute = new SecPkgContext_Sizes(nativeBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_STREAM_SIZES:
attribute = new SecPkgContext_StreamSizes(nativeBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_NAMES:
attribute = Marshal.PtrToStringUni(sspiHandle.DangerousGetHandle());
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_PACKAGE_INFO:
attribute = new SecurityPackageInfoClass(sspiHandle, 0);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_NEGOTIATION_INFO:
unsafe
{
fixed(void *ptr = &nativeBuffer[0])
{
attribute = new NegotiationInfoClass(sspiHandle, (int)((SecPkgContext_NegotiationInfoW *)ptr)->NegotiationState);
}
}
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_CLIENT_SPECIFIED_TARGET:
attribute = Marshal.PtrToStringUni(sspiHandle.DangerousGetHandle());
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_LOCAL_CERT_CONTEXT:
// Fall-through to RemoteCertificate is intentional.
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_REMOTE_CERT_CONTEXT:
attribute = sspiHandle;
sspiHandle = null;
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_ISSUER_LIST_EX:
attribute = new Interop.SspiCli.SecPkgContext_IssuerListInfoEx(sspiHandle, nativeBuffer);
sspiHandle = null;
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_CONNECTION_INFO:
attribute = new SecPkgContext_ConnectionInfo(nativeBuffer);
break;
case Interop.SspiCli.ContextAttribute.SECPKG_ATTR_APPLICATION_PROTOCOL:
unsafe
{
fixed(void *ptr = nativeBuffer)
{
attribute = Marshal.PtrToStructure <Interop.SecPkgContext_ApplicationProtocol>(new IntPtr(ptr));
}
}
break;
default:
// Will return null.
break;
}
}
finally
{
if (sspiHandle != null)
{
sspiHandle.Dispose();
}
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null, attribute);
}
return(attribute);
}
internal static IPHostEntry InternalGetHostByName(string hostName, bool includeIPv6)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Enter(NetEventSource.ComponentType.Socket, "DNS", "GetHostByName", hostName);
}
IPHostEntry ipHostEntry = null;
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("Dns.GetHostByName: " + hostName);
}
NameResolutionPal.EnsureSocketsAreInitialized();
if (hostName.Length > MaxHostName || // If 255 chars, the last one must be a dot.
hostName.Length == MaxHostName && hostName[MaxHostName - 1] != '.')
{
throw new ArgumentOutOfRangeException(nameof(hostName), SR.Format(SR.net_toolong,
"hostName", MaxHostName.ToString(NumberFormatInfo.CurrentInfo)));
}
//
// IPv6 Changes: IPv6 requires the use of getaddrinfo() rather
// than the traditional IPv4 gethostbyaddr() / gethostbyname().
// getaddrinfo() is also protocol independent in that it will also
// resolve IPv4 names / addresses. As a result, it is the preferred
// resolution mechanism on platforms that support it (Windows 5.1+).
// If getaddrinfo() is unsupported, IPv6 resolution does not work.
//
// Consider : If IPv6 is disabled, we could detect IPv6 addresses
// and throw an unsupported platform exception.
//
// Note : Whilst getaddrinfo is available on WinXP+, we only
// use it if IPv6 is enabled (platform is part of that
// decision). This is done to minimize the number of
// possible tests that are needed.
//
if (includeIPv6 || SocketProtocolSupportPal.OSSupportsIPv6)
{
//
// IPv6 enabled: use getaddrinfo() to obtain DNS information.
//
int nativeErrorCode;
SocketError errorCode = NameResolutionPal.TryGetAddrInfo(hostName, out ipHostEntry, out nativeErrorCode);
if (errorCode != SocketError.Success)
{
throw new InternalSocketException(errorCode, nativeErrorCode);
}
}
else
{
ipHostEntry = NameResolutionPal.GetHostByName(hostName);
}
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Socket, "DNS", "GetHostByName", ipHostEntry);
}
return(ipHostEntry);
} // GetHostByName
private static byte[] GetChunkHeader(int size, out int offset)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null, $"size:{size}");
}
uint Mask = 0xf0000000;
byte[] Header = new byte[10];
int i;
offset = -1;
//
// Loop through the size, looking at each nibble. If it's not 0
// convert it to hex. Save the index of the first non-zero
// byte.
//
for (i = 0; i < 8; i++, size <<= 4)
{
//
// offset == -1 means that we haven't found a non-zero nibble
// yet. If we haven't found one, and the current one is zero,
// don't do anything.
//
if (offset == -1)
{
if ((size & Mask) == 0)
{
continue;
}
}
//
// Either we have a non-zero nibble or we're no longer skipping
// leading zeros. Convert this nibble to ASCII and save it.
//
uint Temp = (uint)size >> 28;
if (Temp < 10)
{
Header[i] = (byte)(Temp + '0');
}
else
{
Header[i] = (byte)((Temp - 10) + 'A');
}
//
// If we haven't found a non-zero nibble yet, we've found one
// now, so remember that.
//
if (offset == -1)
{
offset = i;
}
}
Header[8] = (byte)'\r';
Header[9] = (byte)'\n';
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(null);
}
return(Header);
}
// Create a WebRequest.
//
// This is the main creation routine. We take a Uri object, look
// up the Uri in the prefix match table, and invoke the appropriate
// handler to create the object. We also have a parameter that
// tells us whether or not to use the whole Uri or just the
// scheme portion of it.
//
// Input:
// requestUri - Uri object for request.
// useUriBase - True if we're only to look at the scheme portion of the Uri.
//
// Returns:
// Newly created WebRequest.
private static WebRequest Create(Uri requestUri, bool useUriBase)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Enter(NetEventSource.ComponentType.Requests, "WebRequest", "Create", requestUri.ToString());
}
string LookupUri;
WebRequestPrefixElement Current = null;
bool Found = false;
if (!useUriBase)
{
LookupUri = requestUri.AbsoluteUri;
}
else
{
// schemes are registered as <schemeName>":", so add the separator
// to the string returned from the Uri object
LookupUri = requestUri.Scheme + ':';
}
int LookupLength = LookupUri.Length;
// Copy the prefix list so that if it is updated it will
// not affect us on this thread.
List <WebRequestPrefixElement> prefixList = PrefixList;
// Look for the longest matching prefix.
// Walk down the list of prefixes. The prefixes are kept longest
// first. When we find a prefix that is shorter or the same size
// as this Uri, we'll do a compare to see if they match. If they
// do we'll break out of the loop and call the creator.
for (int i = 0; i < prefixList.Count; i++)
{
Current = prefixList[i];
// See if this prefix is short enough.
if (LookupLength >= Current.Prefix.Length)
{
// It is. See if these match.
if (String.Compare(Current.Prefix,
0,
LookupUri,
0,
Current.Prefix.Length,
StringComparison.OrdinalIgnoreCase) == 0)
{
// These match. Remember that we found it and break
// out.
Found = true;
break;
}
}
}
WebRequest webRequest = null;
if (Found)
{
// We found a match, so just call the creator and return what it does.
webRequest = Current.Creator.Create(requestUri);
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Requests, "WebRequest", "Create", webRequest);
}
return(webRequest);
}
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Requests, "WebRequest", "Create", null);
}
// Otherwise no match, throw an exception.
throw new NotSupportedException(SR.net_unknown_prefix);
}
private static X509Certificate2?GetRemoteCertificate(SafeDeleteContext?securityContext, X509Certificate2Collection?remoteCertificateStore)
{
bool gotReference = false;
if (securityContext == null)
{
return(null);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(securityContext);
}
X509Certificate2? result = null;
SafeFreeCertContext?remoteContext = null;
try
{
int errorCode = QueryContextRemoteCertificate(securityContext, out remoteContext);
if (remoteContext != null && !remoteContext.IsInvalid)
{
remoteContext.DangerousAddRef(ref gotReference);
result = new X509Certificate2(remoteContext.DangerousGetHandle());
}
if (remoteCertificateStore != null)
{
using (SafeSharedX509StackHandle chainStack =
Interop.OpenSsl.GetPeerCertificateChain(((SafeDeleteSslContext)securityContext).SslContext))
{
if (!chainStack.IsInvalid)
{
int count = Interop.Crypto.GetX509StackFieldCount(chainStack);
for (int i = 0; i < count; i++)
{
IntPtr certPtr = Interop.Crypto.GetX509StackField(chainStack, i);
if (certPtr != IntPtr.Zero)
{
// X509Certificate2(IntPtr) calls X509_dup, so the reference is appropriately tracked.
X509Certificate2 chainCert = new X509Certificate2(certPtr);
remoteCertificateStore.Add(chainCert);
}
}
}
}
}
}
catch
{
result?.Dispose();
throw;
}
finally
{
if (remoteContext != null)
{
if (gotReference)
{
remoteContext.DangerousRelease();
}
remoteContext.Dispose();
}
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Log.RemoteCertificate(result);
NetEventSource.Exit(securityContext, result);
}
return(result);
}
/// <summary>
/// <para>Thread for the timer. Ignores all exceptions. If no activity occurs for a while,
/// the thread will shut down.</para>
/// </summary>
private static void ThreadProc()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(null);
}
#if DEBUG
DebugThreadTracking.SetThreadSource(ThreadKinds.Timer);
using (DebugThreadTracking.SetThreadKind(ThreadKinds.System | ThreadKinds.Async))
{
#endif
// Set this thread as a background thread. On AppDomain/Process shutdown, the thread will just be killed.
Thread.CurrentThread.IsBackground = true;
// Keep a permanent lock on s_Queues. This lets for example Shutdown() know when this thread isn't running.
lock (s_Queues)
{
// If shutdown was recently called, abort here.
if (Interlocked.CompareExchange(ref s_ThreadState, (int)TimerThreadState.Running, (int)TimerThreadState.Running) !=
(int)TimerThreadState.Running)
{
return;
}
bool running = true;
while (running)
{
try
{
s_ThreadReadyEvent.Reset();
while (true)
{
// Copy all the new queues to the real queues. Since only this thread modifies the real queues, it doesn't have to lock it.
if (s_NewQueues.Count > 0)
{
lock (s_NewQueues)
{
for (LinkedListNode <WeakReference> node = s_NewQueues.First; node != null; node = s_NewQueues.First)
{
s_NewQueues.Remove(node);
s_Queues.AddLast(node);
}
}
}
int now = Environment.TickCount;
int nextTick = 0;
bool haveNextTick = false;
for (LinkedListNode <WeakReference> node = s_Queues.First; node != null; /* node = node.Next must be done in the body */)
{
TimerQueue queue = (TimerQueue)node.Value.Target;
if (queue == null)
{
LinkedListNode <WeakReference> next = node.Next;
s_Queues.Remove(node);
node = next;
continue;
}
// Fire() will always return values that should be interpreted as later than 'now' (that is, even if 'now' is
// returned, it is 0x100000000 milliseconds in the future). There's also a chance that Fire() will return a value
// intended as > 0x100000000 milliseconds from 'now'. Either case will just cause an extra scan through the timers.
int nextTickInstance;
if (queue.Fire(out nextTickInstance) && (!haveNextTick || IsTickBetween(now, nextTick, nextTickInstance)))
{
nextTick = nextTickInstance;
haveNextTick = true;
}
node = node.Next;
}
// Figure out how long to wait, taking into account how long the loop took.
// Add 15 ms to compensate for poor TickCount resolution (want to guarantee a firing).
int newNow = Environment.TickCount;
int waitDuration = haveNextTick ?
(int)(IsTickBetween(now, nextTick, newNow) ?
Math.Min(unchecked ((uint)(nextTick - newNow)), (uint)(Int32.MaxValue - c_TickCountResolution)) + c_TickCountResolution :
0) :
c_ThreadIdleTimeoutMilliseconds;
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(null, $"Waiting for {waitDuration}ms");
}
int waitResult = WaitHandle.WaitAny(s_ThreadEvents, waitDuration, false);
// 0 is s_ThreadShutdownEvent - die.
if (waitResult == 0)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(null, "Awoke, cause: Shutdown");
}
running = false;
break;
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(null, $"Awoke, cause {(waitResult == WaitHandle.WaitTimeout ? "Timeout" : "Prod")}");
}
// If we timed out with nothing to do, shut down.
if (waitResult == WaitHandle.WaitTimeout && !haveNextTick)
{
Interlocked.CompareExchange(ref s_ThreadState, (int)TimerThreadState.Idle, (int)TimerThreadState.Running);
// There could have been one more prod between the wait and the exchange. Check, and abort if necessary.
if (s_ThreadReadyEvent.WaitOne(0, false))
{
if (Interlocked.CompareExchange(ref s_ThreadState, (int)TimerThreadState.Running, (int)TimerThreadState.Idle) ==
(int)TimerThreadState.Idle)
{
continue;
}
}
running = false;
break;
}
}
}
catch (Exception exception)
{
if (ExceptionCheck.IsFatal(exception))
{
throw;
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(null, exception);
}
// The only options are to continue processing and likely enter an error-loop,
// shut down timers for this AppDomain, or shut down the AppDomain. Go with shutting
// down the AppDomain in debug, and going into a loop in retail, but try to make the
// loop somewhat slow. Note that in retail, this can only be triggered by OutOfMemory or StackOverflow,
// or an exception thrown within TimerThread - the rest are caught in Fire().
#if !DEBUG
Thread.Sleep(1000);
#else
throw;
#endif
}
}
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(null, "Stop");
}
#if DEBUG
}
#endif
}
protected override void Dispose(bool disposing)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
try
{
if (disposing)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "_closed:" + _closed);
}
if (_closed)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
return;
}
_closed = true;
Interop.HttpApi.HTTP_FLAGS flags = ComputeLeftToWrite();
if (_leftToWrite > 0 && !_inOpaqueMode)
{
throw new InvalidOperationException(SR.net_io_notenoughbyteswritten);
}
bool sentHeaders = _httpContext.Response.SentHeaders;
if (sentHeaders && _leftToWrite == 0)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
return;
}
uint statusCode = 0;
if ((_httpContext.Response.BoundaryType == BoundaryType.Chunked || _httpContext.Response.BoundaryType == BoundaryType.None) && (String.Compare(_httpContext.Request.HttpMethod, "HEAD", StringComparison.OrdinalIgnoreCase) != 0))
{
if (_httpContext.Response.BoundaryType == BoundaryType.None)
{
flags |= Interop.HttpApi.HTTP_FLAGS.HTTP_SEND_RESPONSE_FLAG_DISCONNECT;
}
fixed(void *pBuffer = ChunkTerminator)
{
Interop.HttpApi.HTTP_DATA_CHUNK *pDataChunk = null;
if (_httpContext.Response.BoundaryType == BoundaryType.Chunked)
{
Interop.HttpApi.HTTP_DATA_CHUNK dataChunk = new Interop.HttpApi.HTTP_DATA_CHUNK();
dataChunk.DataChunkType = Interop.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
dataChunk.pBuffer = (byte *)pBuffer;
dataChunk.BufferLength = (uint)ChunkTerminator.Length;
pDataChunk = &dataChunk;
}
if (!sentHeaders)
{
statusCode = _httpContext.Response.SendHeaders(pDataChunk, null, flags, false);
}
else
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Calling Interop.HttpApi.HttpSendResponseEntityBody");
}
statusCode =
Interop.HttpApi.HttpSendResponseEntityBody(
_httpContext.RequestQueueHandle,
_httpContext.RequestId,
(uint)flags,
pDataChunk != null ? (ushort)1 : (ushort)0,
pDataChunk,
null,
SafeLocalAllocHandle.Zero,
0,
null,
null);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Call to Interop.HttpApi.HttpSendResponseEntityBody returned:" + statusCode);
}
if (_httpContext.Listener.IgnoreWriteExceptions)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Suppressing error");
}
statusCode = Interop.HttpApi.ERROR_SUCCESS;
}
}
}
}
else
{
if (!sentHeaders)
{
statusCode = _httpContext.Response.SendHeaders(null, null, flags, false);
}
}
if (statusCode != Interop.HttpApi.ERROR_SUCCESS && statusCode != Interop.HttpApi.ERROR_HANDLE_EOF)
{
Exception exception = new HttpListenerException((int)statusCode);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, exception.ToString());
}
_httpContext.Abort();
throw exception;
}
_leftToWrite = 0;
}
}
finally
{
base.Dispose(disposing);
}
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
