internal void DetachBlob(RequestContextBase memoryBlob)
{
if ((memoryBlob != null) && (memoryBlob == this.m_MemoryBlob))
{
this.m_MemoryBlob = null;
}
}
// Use this to save the blob from dispose if this object was never used (never given to a user) and is about to be
// disposed.
internal void DetachBlob(RequestContextBase memoryBlob)
{
if (memoryBlob != null && (object)memoryBlob == (object)_memoryBlob !)
{
_memoryBlob = null;
}
}
internal HttpListenerRequest(HttpListenerContext httpContext, RequestContextBase memoryBlob)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"httpContext:${httpContext} memoryBlob {((IntPtr)memoryBlob.RequestBlob)}");
NetEventSource.Associate(this, httpContext);
}
_httpContext = httpContext;
_memoryBlob = memoryBlob;
_boundaryType = BoundaryType.None;
// Set up some of these now to avoid refcounting on memory blob later.
_requestId = memoryBlob.RequestBlob->RequestId;
_connectionId = memoryBlob.RequestBlob->ConnectionId;
_sslStatus = memoryBlob.RequestBlob->pSslInfo == null ? SslStatus.Insecure :
memoryBlob.RequestBlob->pSslInfo->SslClientCertNegotiated == 0 ? SslStatus.NoClientCert :
SslStatus.ClientCert;
if (memoryBlob.RequestBlob->pRawUrl != null && memoryBlob.RequestBlob->RawUrlLength > 0)
{
_rawUrl = Marshal.PtrToStringAnsi((IntPtr)memoryBlob.RequestBlob->pRawUrl, memoryBlob.RequestBlob->RawUrlLength);
}
Interop.HttpApi.HTTP_COOKED_URL cookedUrl = memoryBlob.RequestBlob->CookedUrl;
if (cookedUrl.pHost != null && cookedUrl.HostLength > 0)
{
_cookedUrlHost = Marshal.PtrToStringUni((IntPtr)cookedUrl.pHost, cookedUrl.HostLength / 2);
}
if (cookedUrl.pAbsPath != null && cookedUrl.AbsPathLength > 0)
{
_cookedUrlPath = Marshal.PtrToStringUni((IntPtr)cookedUrl.pAbsPath, cookedUrl.AbsPathLength / 2);
}
if (cookedUrl.pQueryString != null && cookedUrl.QueryStringLength > 0)
{
_cookedUrlQuery = Marshal.PtrToStringUni((IntPtr)cookedUrl.pQueryString, cookedUrl.QueryStringLength / 2);
}
_version = new Version(memoryBlob.RequestBlob->Version.MajorVersion, memoryBlob.RequestBlob->Version.MinorVersion);
_clientCertState = ListenerClientCertState.NotInitialized;
_keepAlive = null;
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"RequestId:{RequestId} ConnectionId:{_connectionId} RawConnectionId:{memoryBlob.RequestBlob->RawConnectionId} UrlContext:{memoryBlob.RequestBlob->UrlContext} RawUrl:{_rawUrl} Version:{_version} Secure:{_sslStatus}");
NetEventSource.Info(this, $"httpContext:${httpContext} RequestUri:{RequestUri} Content-Length:{ContentLength64} HTTP Method:{HttpMethod}");
}
// Log headers
if (NetEventSource.IsEnabled)
{
StringBuilder sb = new StringBuilder("HttpListenerRequest Headers:\n");
for (int i = 0; i < Headers.Count; i++)
{
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
NetEventSource.Info(this, sb.ToString());
}
}
internal HttpListenerRequest(HttpListenerContext httpContext, RequestContextBase memoryBlob)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"httpContext:${httpContext} memoryBlob {((IntPtr)memoryBlob.RequestBlob)}");
NetEventSource.Associate(this, httpContext);
}
_httpContext = httpContext;
_memoryBlob = memoryBlob;
_boundaryType = BoundaryType.None;
// Set up some of these now to avoid refcounting on memory blob later.
_requestId = memoryBlob.RequestBlob->RequestId;
_connectionId = memoryBlob.RequestBlob->ConnectionId;
_sslStatus = memoryBlob.RequestBlob->pSslInfo == null ? SslStatus.Insecure :
memoryBlob.RequestBlob->pSslInfo->SslClientCertNegotiated == 0 ? SslStatus.NoClientCert :
SslStatus.ClientCert;
if (memoryBlob.RequestBlob->pRawUrl != null && memoryBlob.RequestBlob->RawUrlLength > 0)
{
_rawUrl = Marshal.PtrToStringAnsi((IntPtr)memoryBlob.RequestBlob->pRawUrl, memoryBlob.RequestBlob->RawUrlLength);
}
Interop.HttpApi.HTTP_COOKED_URL cookedUrl = memoryBlob.RequestBlob->CookedUrl;
if (cookedUrl.pHost != null && cookedUrl.HostLength > 0)
{
_cookedUrlHost = Marshal.PtrToStringUni((IntPtr)cookedUrl.pHost, cookedUrl.HostLength / 2);
}
if (cookedUrl.pAbsPath != null && cookedUrl.AbsPathLength > 0)
{
_cookedUrlPath = Marshal.PtrToStringUni((IntPtr)cookedUrl.pAbsPath, cookedUrl.AbsPathLength / 2);
}
if (cookedUrl.pQueryString != null && cookedUrl.QueryStringLength > 0)
{
_cookedUrlQuery = Marshal.PtrToStringUni((IntPtr)cookedUrl.pQueryString, cookedUrl.QueryStringLength / 2);
}
_version = new Version(memoryBlob.RequestBlob->Version.MajorVersion, memoryBlob.RequestBlob->Version.MinorVersion);
_clientCertState = ListenerClientCertState.NotInitialized;
_keepAlive = null;
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"RequestId:{RequestId} ConnectionId:{_connectionId} RawConnectionId:{memoryBlob.RequestBlob->RawConnectionId} UrlContext:{memoryBlob.RequestBlob->UrlContext} RawUrl:{_rawUrl} Version:{_version} Secure:{_sslStatus}");
NetEventSource.Info(this, $"httpContext:${httpContext} RequestUri:{RequestUri} Content-Length:{ContentLength64} HTTP Method:{HttpMethod}");
}
// Log headers
if (NetEventSource.IsEnabled)
{
StringBuilder sb = new StringBuilder("HttpListenerRequest Headers:\n");
for (int i = 0; i < Headers.Count; i++)
{
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
NetEventSource.Info(this, sb.ToString());
}
}
internal HttpListenerContext(HttpListener httpListener, RequestContextBase memoryBlob)
{
if (Logging.On) Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpListener#" + ValidationHelper.HashString(httpListener) + " requestBlob=" + ValidationHelper.HashString((IntPtr) memoryBlob.RequestBlob));
m_Listener = httpListener;
m_Request = new HttpListenerRequest(this, memoryBlob);
m_AuthenticationSchemes = httpListener.AuthenticationSchemes;
m_ExtendedProtectionPolicy = httpListener.ExtendedProtectionPolicy;
GlobalLog.Print("HttpListenerContext#" + ValidationHelper.HashString(this) + "::.ctor() HttpListener#" + ValidationHelper.HashString(m_Listener) + " HttpListenerRequest#" + ValidationHelper.HashString(m_Request));
}
internal unsafe HttpListenerContext(HttpListener httpListener, RequestContextBase memoryBlob)
{
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpListener#" + ValidationHelper.HashString(httpListener) + " requestBlob=" + ValidationHelper.HashString((IntPtr) memoryBlob.RequestBlob));
}
this.m_Listener = httpListener;
this.m_Request = new HttpListenerRequest(this, memoryBlob);
}
internal HttpListenerContext(HttpListener httpListener, RequestContextBase memoryBlob)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"httpListener {httpListener} requestBlob={((IntPtr)memoryBlob.RequestBlob)}");
_listener = httpListener;
Request = new HttpListenerRequest(this, memoryBlob);
AuthenticationSchemes = httpListener.AuthenticationSchemes;
ExtendedProtectionPolicy = httpListener.ExtendedProtectionPolicy;
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"HttpListener: {_listener} HttpListenerRequest: {Request}");
}
internal unsafe HttpListenerContext(HttpListener httpListener, RequestContextBase memoryBlob)
{
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpListener#" + ValidationHelper.HashString(httpListener) + " requestBlob=" + ValidationHelper.HashString((IntPtr)memoryBlob.RequestBlob));
}
this.m_Listener = httpListener;
this.m_Request = new HttpListenerRequest(this, memoryBlob);
}
internal unsafe HttpListenerRequest(System.Net.HttpListenerContext httpContext, RequestContextBase memoryBlob)
{
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpContext#" + ValidationHelper.HashString(httpContext) + " memoryBlob# " + ValidationHelper.HashString((IntPtr)memoryBlob.RequestBlob));
}
if (Logging.On)
{
Logging.Associate(Logging.HttpListener, this, httpContext);
}
this.m_HttpContext = httpContext;
this.m_MemoryBlob = memoryBlob;
this.m_BoundaryType = BoundaryType.None;
this.m_RequestId = memoryBlob.RequestBlob.RequestId;
this.m_ConnectionId = memoryBlob.RequestBlob.ConnectionId;
this.m_SslStatus = (memoryBlob.RequestBlob.pSslInfo == null) ? SslStatus.Insecure : ((memoryBlob.RequestBlob.pSslInfo.SslClientCertNegotiated == 0) ? SslStatus.NoClientCert : SslStatus.ClientCert);
if ((memoryBlob.RequestBlob.pRawUrl != null) && (memoryBlob.RequestBlob.RawUrlLength > 0))
{
this.m_RawUrl = Marshal.PtrToStringAnsi((IntPtr)memoryBlob.RequestBlob.pRawUrl, memoryBlob.RequestBlob.RawUrlLength);
}
UnsafeNclNativeMethods.HttpApi.HTTP_COOKED_URL cookedUrl = memoryBlob.RequestBlob.CookedUrl;
if ((cookedUrl.pHost != null) && (cookedUrl.HostLength > 0))
{
this.m_CookedUrlHost = Marshal.PtrToStringUni((IntPtr)cookedUrl.pHost, cookedUrl.HostLength / 2);
}
if ((cookedUrl.pAbsPath != null) && (cookedUrl.AbsPathLength > 0))
{
this.m_CookedUrlPath = Marshal.PtrToStringUni((IntPtr)cookedUrl.pAbsPath, cookedUrl.AbsPathLength / 2);
}
if ((cookedUrl.pQueryString != null) && (cookedUrl.QueryStringLength > 0))
{
this.m_CookedUrlQuery = Marshal.PtrToStringUni((IntPtr)cookedUrl.pQueryString, cookedUrl.QueryStringLength / 2);
}
this.m_Version = new Version(memoryBlob.RequestBlob.Version.MajorVersion, memoryBlob.RequestBlob.Version.MinorVersion);
this.m_ClientCertState = ListenerClientCertState.NotInitialized;
this.m_KeepAlive = TriState.Unspecified;
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpContext#" + ValidationHelper.HashString(httpContext) + " RequestUri:" + ValidationHelper.ToString(this.RequestUri) + " Content-Length:" + ValidationHelper.ToString(this.ContentLength64) + " HTTP Method:" + ValidationHelper.ToString(this.HttpMethod));
}
if (Logging.On)
{
StringBuilder builder = new StringBuilder("HttpListenerRequest Headers:\n");
for (int i = 0; i < this.Headers.Count; i++)
{
builder.Append("\t");
builder.Append(this.Headers.GetKey(i));
builder.Append(" : ");
builder.Append(this.Headers.Get(i));
builder.Append("\n");
}
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", builder.ToString());
}
}
internal unsafe HttpListenerRequest(System.Net.HttpListenerContext httpContext, RequestContextBase memoryBlob)
{
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpContext#" + ValidationHelper.HashString(httpContext) + " memoryBlob# " + ValidationHelper.HashString((IntPtr) memoryBlob.RequestBlob));
}
if (Logging.On)
{
Logging.Associate(Logging.HttpListener, this, httpContext);
}
this.m_HttpContext = httpContext;
this.m_MemoryBlob = memoryBlob;
this.m_BoundaryType = BoundaryType.None;
this.m_RequestId = memoryBlob.RequestBlob.RequestId;
this.m_ConnectionId = memoryBlob.RequestBlob.ConnectionId;
this.m_SslStatus = (memoryBlob.RequestBlob.pSslInfo == null) ? SslStatus.Insecure : ((memoryBlob.RequestBlob.pSslInfo.SslClientCertNegotiated == 0) ? SslStatus.NoClientCert : SslStatus.ClientCert);
if ((memoryBlob.RequestBlob.pRawUrl != null) && (memoryBlob.RequestBlob.RawUrlLength > 0))
{
this.m_RawUrl = Marshal.PtrToStringAnsi((IntPtr) memoryBlob.RequestBlob.pRawUrl, memoryBlob.RequestBlob.RawUrlLength);
}
UnsafeNclNativeMethods.HttpApi.HTTP_COOKED_URL cookedUrl = memoryBlob.RequestBlob.CookedUrl;
if ((cookedUrl.pHost != null) && (cookedUrl.HostLength > 0))
{
this.m_CookedUrlHost = Marshal.PtrToStringUni((IntPtr) cookedUrl.pHost, cookedUrl.HostLength / 2);
}
if ((cookedUrl.pAbsPath != null) && (cookedUrl.AbsPathLength > 0))
{
this.m_CookedUrlPath = Marshal.PtrToStringUni((IntPtr) cookedUrl.pAbsPath, cookedUrl.AbsPathLength / 2);
}
if ((cookedUrl.pQueryString != null) && (cookedUrl.QueryStringLength > 0))
{
this.m_CookedUrlQuery = Marshal.PtrToStringUni((IntPtr) cookedUrl.pQueryString, cookedUrl.QueryStringLength / 2);
}
this.m_Version = new Version(memoryBlob.RequestBlob.Version.MajorVersion, memoryBlob.RequestBlob.Version.MinorVersion);
this.m_ClientCertState = ListenerClientCertState.NotInitialized;
this.m_KeepAlive = TriState.Unspecified;
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpContext#" + ValidationHelper.HashString(httpContext) + " RequestUri:" + ValidationHelper.ToString(this.RequestUri) + " Content-Length:" + ValidationHelper.ToString(this.ContentLength64) + " HTTP Method:" + ValidationHelper.ToString(this.HttpMethod));
}
if (Logging.On)
{
StringBuilder builder = new StringBuilder("HttpListenerRequest Headers:\n");
for (int i = 0; i < this.Headers.Count; i++)
{
builder.Append("\t");
builder.Append(this.Headers.GetKey(i));
builder.Append(" : ");
builder.Append(this.Headers.Get(i));
builder.Append("\n");
}
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", builder.ToString());
}
}
internal HttpListenerContext(HttpListener httpListener, RequestContextBase memoryBlob)
{
if (Logging.On)
{
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpListener#" + ValidationHelper.HashString(httpListener) + " requestBlob=" + ValidationHelper.HashString((IntPtr)memoryBlob.RequestBlob));
}
m_Listener = httpListener;
m_Request = new HttpListenerRequest(this, memoryBlob);
m_AuthenticationSchemes = httpListener.AuthenticationSchemes;
m_ExtendedProtectionPolicy = httpListener.ExtendedProtectionPolicy;
GlobalLog.Print("HttpListenerContext#" + ValidationHelper.HashString(this) + "::.ctor() HttpListener#" + ValidationHelper.HashString(m_Listener) + " HttpListenerRequest#" + ValidationHelper.HashString(m_Request));
}
internal HttpListenerContext(HttpListener httpListener, RequestContextBase memoryBlob)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"httpListener {httpListener} requestBlob={((IntPtr)memoryBlob.RequestBlob)}");
}
_listener = httpListener;
Request = new HttpListenerRequest(this, memoryBlob);
AuthenticationSchemes = httpListener.AuthenticationSchemes;
ExtendedProtectionPolicy = httpListener.ExtendedProtectionPolicy;
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"HttpListener: {_listener} HttpListenerRequest: {Request}");
}
}
internal void Close()
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Close", "");
}
RequestContextBase memoryBlob = this.m_MemoryBlob;
if (memoryBlob != null)
{
memoryBlob.Close();
this.m_MemoryBlob = null;
}
this.m_IsDisposed = true;
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Close", "");
}
}
//should only be called from httplistenercontext
internal void Close()
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Enter(this);
}
RequestContextBase memoryBlob = _memoryBlob;
if (memoryBlob != null)
{
memoryBlob.Close();
_memoryBlob = null;
}
_isDisposed = true;
if (NetEventSource.IsEnabled)
{
NetEventSource.Exit(this);
}
}
internal void DetachBlob(RequestContextBase memoryBlob)
{
if ((memoryBlob != null) && (memoryBlob == this.m_MemoryBlob))
{
this.m_MemoryBlob = null;
}
}
internal HttpListenerContext HandleAuthentication(RequestContextBase memoryBlob, out bool stoleBlob)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() memoryBlob:0x" + ((IntPtr) memoryBlob.RequestBlob).ToString("x"));
string challenge = null;
stoleBlob = false;
// Some things we need right away. Lift them out now while it's convenient.
string verb = UnsafeNclNativeMethods.HttpApi.GetVerb(memoryBlob.RequestBlob);
string authorizationHeader = UnsafeNclNativeMethods.HttpApi.GetKnownHeader(memoryBlob.RequestBlob, (int) HttpRequestHeader.Authorization);
ulong connectionId = memoryBlob.RequestBlob->ConnectionId;
ulong requestId = memoryBlob.RequestBlob->RequestId;
bool isSecureConnection = memoryBlob.RequestBlob->pSslInfo != null;
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() authorizationHeader:" + ValidationHelper.ToString(authorizationHeader));
// if the app has turned on AuthPersistence, an anonymous request might
// be authenticated by virtue of it coming on a connection that was
// previously authenticated.
// assurance that we do this only for NTLM/Negotiate is not here, but in the
// code that caches WindowsIdentity instances in the Dictionary.
DisconnectAsyncResult disconnectResult = (DisconnectAsyncResult) DisconnectResults[connectionId];
if (UnsafeConnectionNtlmAuthentication)
{
if (authorizationHeader == null)
{
WindowsPrincipal principal = disconnectResult == null ? null : disconnectResult.AuthenticatedConnection;
if (principal != null)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() got principal:" + ValidationHelper.ToString(principal) + " principal.Identity.Name:" + ValidationHelper.ToString(principal.Identity.Name) + " creating request");
stoleBlob = true;
HttpListenerContext ntlmContext = new HttpListenerContext(this, memoryBlob);
ntlmContext.SetIdentity(principal, null);
ntlmContext.Request.ReleasePins();
return ntlmContext;
}
}
else
{
// They sent an authorization - destroy their previous credentials.
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() clearing principal cache");
if (disconnectResult != null)
{
disconnectResult.AuthenticatedConnection = null;
}
}
}
// Figure out what schemes we're allowing, what context we have.
stoleBlob = true;
HttpListenerContext httpContext = null;
NTAuthentication oldContext = null;
NTAuthentication newContext = null;
NTAuthentication context = null;
AuthenticationSchemes headerScheme = AuthenticationSchemes.None;
AuthenticationSchemes authenticationScheme = AuthenticationSchemes;
ExtendedProtectionPolicy extendedProtectionPolicy = m_ExtendedProtectionPolicy;
try
{
// Take over handling disconnects for now.
if (disconnectResult != null && !disconnectResult.StartOwningDisconnectHandling())
{
// Oops! Just disconnected just then. Pretend we didn't see the disconnectResult.
disconnectResult = null;
}
// Pick out the old context now. By default, it'll be removed in the finally, unless context is set somewhere.
if (disconnectResult != null)
{
oldContext = disconnectResult.Session;
}
httpContext = new HttpListenerContext(this, memoryBlob);
AuthenticationSelectorInfo authenticationSelector = m_AuthenticationDelegate;
if (authenticationSelector != null)
{
try
{
httpContext.Request.ReleasePins();
authenticationScheme = authenticationSelector.Delegate(httpContext.Request);
// Cache the results of authenticationSelector (if any)
httpContext.AuthenticationSchemes = authenticationScheme;
if (!authenticationSelector.AdvancedAuth &&
(authenticationScheme & (AuthenticationSchemes.Negotiate | AuthenticationSchemes.Ntlm | AuthenticationSchemes.Digest)) != 0)
{
throw m_SecurityException;
}
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() AuthenticationSchemeSelectorDelegate() returned authenticationScheme:" + authenticationScheme);
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception)) throw;
if (Logging.On) Logging.PrintError(Logging.HttpListener, this, "HandleAuthentication", SR.GetString(SR.net_log_listener_delegate_exception, exception));
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() AuthenticationSchemeSelectorDelegate() returned authenticationScheme:" + authenticationScheme);
SendError(requestId, HttpStatusCode.InternalServerError, null);
httpContext.Close();
return null;
}
}
else
{
// We didn't give the request to the user yet, so we haven't lost control of the unmanaged blob and can
// continue to reuse the buffer.
stoleBlob = false;
}
ExtendedProtectionSelector extendedProtectionSelector = m_ExtendedProtectionSelectorDelegate;
if (extendedProtectionSelector != null)
{
extendedProtectionPolicy = extendedProtectionSelector(httpContext.Request);
if (extendedProtectionPolicy == null)
{
extendedProtectionPolicy = new ExtendedProtectionPolicy(PolicyEnforcement.Never);
}
// Cache the results of extendedProtectionSelector (if any)
httpContext.ExtendedProtectionPolicy = extendedProtectionPolicy;
}
// Then figure out what scheme they're trying (if any are allowed)
int index = -1;
if (authorizationHeader != null && (authenticationScheme & ~AuthenticationSchemes.Anonymous) != AuthenticationSchemes.None)
{
// Find the end of the scheme name. Trust that HTTP.SYS parsed out just our header ok.
for (index = 0; index < authorizationHeader.Length; index++)
{
if (authorizationHeader[index] == ' ' || authorizationHeader[index] == '\t' ||
authorizationHeader[index] == '\r' || authorizationHeader[index] == '\n')
{
break;
}
}
// Currently only allow one Authorization scheme/header per request.
if (index < authorizationHeader.Length)
{
if ((authenticationScheme & AuthenticationSchemes.Negotiate) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, NegotiateClient.AuthType, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Negotiate;
}
else if ((authenticationScheme & AuthenticationSchemes.Ntlm) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, NtlmClient.AuthType, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Ntlm;
}
else if ((authenticationScheme & AuthenticationSchemes.Digest) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, DigestClient.AuthType, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Digest;
}
else if ((authenticationScheme & AuthenticationSchemes.Basic) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, BasicClient.AuthType, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Basic;
}
else
{
if (Logging.On) Logging.PrintWarning(Logging.HttpListener, this, "HandleAuthentication", SR.GetString(SR.net_log_listener_unsupported_authentication_scheme, authorizationHeader , authenticationScheme));
}
}
}
// httpError holds the error we will return if an Authorization header is present but can't be authenticated
HttpStatusCode httpError = HttpStatusCode.InternalServerError;
bool error = false;
// See if we found an acceptable auth header
if (headerScheme == AuthenticationSchemes.None)
{
if (Logging.On) Logging.PrintWarning(Logging.HttpListener, this, "HandleAuthentication", SR.GetString(SR.net_log_listener_unmatched_authentication_scheme, ValidationHelper.ToString(authenticationScheme), (authorizationHeader == null ? "<null>" : authorizationHeader)));
// If anonymous is allowed, just return the context. Otherwise go for the 401.
if ((authenticationScheme & AuthenticationSchemes.Anonymous) != AuthenticationSchemes.None)
{
if (!stoleBlob)
{
stoleBlob = true;
httpContext.Request.ReleasePins();
}
return httpContext;
}
httpError = HttpStatusCode.Unauthorized;
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
httpContext = null;
}
else
{
// Perform Authentication
byte[] bytes = null;
byte[] decodedOutgoingBlob = null;
string outBlob = null;
// Find the beginning of the blob. Trust that HTTP.SYS parsed out just our header ok.
for (index++; index < authorizationHeader.Length; index++)
{
if (authorizationHeader[index] != ' ' && authorizationHeader[index] != '\t' &&
authorizationHeader[index] != '\r' && authorizationHeader[index] != '\n')
{
break;
}
}
string inBlob = index < authorizationHeader.Length ? authorizationHeader.Substring(index) : "";
IPrincipal principal = null;
SecurityStatus statusCodeNew;
ChannelBinding binding;
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() Performing Authentication headerScheme:" + ValidationHelper.ToString(headerScheme));
switch (headerScheme)
{
case AuthenticationSchemes.Digest:
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() package:WDigest headerScheme:" + headerScheme);
// WDigest had some weird behavior. This is what I have discovered:
// Local accounts don't work, only domain accounts. The domain (i.e. REDMOND) is implied. Not sure how it is chosen.
// If the domain is specified and the credentials are correct, it works. If they're not (domain, username or password):
// AcceptSecurityContext (GetOutgoingDigestBlob) returns success but with a bogus 4k challenge, and
// QuerySecurityContextToken (GetContextToken) fails with NoImpersonation.
// If the domain isn't specified, AcceptSecurityContext returns NoAuthenticatingAuthority for a bad username,
// and LogonDenied for a bad password.
// Also interesting is that WDigest requires us to keep a reference to the previous context, but fails if we
// actually pass it in! (It't ok to pass it in for the first request, but not if nc > 1.) For Whidbey,
// we create a new context and associate it with the connection, just like NTLM, but instead of using it for
// the next request on the connection, we always create a new context and swap the old one out. As long
// as we keep the old one around until after we authenticate with the new one, it works. For this reason,
// we also keep these contexts around past the lifetime of the connection, so that KeepAlive=false works.
binding = GetChannelBinding(connectionId, isSecureConnection, extendedProtectionPolicy);
context = new NTAuthentication(true, NegotiationInfoClass.WDigest, null,
GetContextFlags(extendedProtectionPolicy, isSecureConnection), binding);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() verb:" + verb + " context.IsValidContext:" + context.IsValidContext.ToString());
outBlob = context.GetOutgoingDigestBlob(inBlob, verb, null, Realm, false, false, out statusCodeNew);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() GetOutgoingDigestBlob() returned IsCompleted:" + context.IsCompleted + " statusCodeNew:" + statusCodeNew + " outBlob:[" + outBlob + "]");
// WDigest bug: sometimes when AcceptSecurityContext returns success, it provides a bogus, empty 4k buffer.
// Ignore it. (Should find out what's going on here from WDigest people.)
if (statusCodeNew == SecurityStatus.OK)
{
outBlob = null;
}
if (context.IsValidContext)
{
SafeCloseHandle userContext = null;
try
{
if (!CheckSpn(context, isSecureConnection, extendedProtectionPolicy)) {
httpError = HttpStatusCode.Unauthorized;
}
else {
httpContext.Request.ServiceName = context.ClientSpecifiedSpn;
userContext = context.GetContextToken(out statusCodeNew);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() GetContextToken() returned:" + statusCodeNew.ToString());
if (statusCodeNew != SecurityStatus.OK)
{
httpError = HttpStatusFromSecurityStatus(statusCodeNew);
}
else if (userContext == null)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() error: GetContextToken() returned:null statusCodeNew:" + statusCodeNew.ToString());
httpError = HttpStatusCode.Unauthorized;
}
else
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() creating new WindowsIdentity() from userContext:" + userContext.DangerousGetHandle().ToString("x8"));
principal = new WindowsPrincipal(CreateWindowsIdentity(userContext.DangerousGetHandle(), DigestClient.AuthType, WindowsAccountType.Normal, true));
}
}
}
finally {
if (userContext!=null) {
userContext.Close();
}
}
newContext = context;
if (outBlob != null)
{
challenge = DigestClient.AuthType + " " + outBlob;
}
}
else
{
httpError = HttpStatusFromSecurityStatus(statusCodeNew);
}
break;
case AuthenticationSchemes.Negotiate:
case AuthenticationSchemes.Ntlm:
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() headerScheme:" + headerScheme);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() returned context#" + ValidationHelper.HashString(oldContext) + " for connectionId:" + connectionId);
string package = headerScheme == AuthenticationSchemes.Ntlm ? NtlmClient.AuthType : NegotiateClient.AuthType;
if (oldContext != null && oldContext.Package == package)
{
context = oldContext;
}
else
{
binding = GetChannelBinding(connectionId, isSecureConnection, extendedProtectionPolicy);
context = new NTAuthentication(true, package, null,
GetContextFlags(extendedProtectionPolicy, isSecureConnection), binding);
}
try
{
bytes = Convert.FromBase64String(inBlob);
}
catch (FormatException)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() FromBase64String threw a FormatException.");
httpError = HttpStatusCode.BadRequest;
error = true;
}
if (!error)
{
decodedOutgoingBlob = context.GetOutgoingBlob(bytes, false, out statusCodeNew);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() GetOutgoingBlob() returned IsCompleted:" + context.IsCompleted + " statusCodeNew:" + statusCodeNew);
error = !context.IsValidContext;
if (error)
{
// Bug #474228: SSPI Workaround
// If a client sends up a blob on the initial request, Negotiate returns SEC_E_INVALID_HANDLE
// when it should return SEC_E_INVALID_TOKEN.
if (statusCodeNew == SecurityStatus.InvalidHandle && oldContext == null && bytes != null && bytes.Length > 0)
{
statusCodeNew = SecurityStatus.InvalidToken;
}
httpError = HttpStatusFromSecurityStatus(statusCodeNew);
}
}
if (decodedOutgoingBlob!=null) {
outBlob = Convert.ToBase64String(decodedOutgoingBlob);
}
if (!error)
{
if (context.IsCompleted) {
SafeCloseHandle userContext = null;
try
{
if (!CheckSpn(context, isSecureConnection, extendedProtectionPolicy)) {
httpError = HttpStatusCode.Unauthorized;
}
else {
httpContext.Request.ServiceName = context.ClientSpecifiedSpn;
userContext = context.GetContextToken(out statusCodeNew);
if (statusCodeNew != SecurityStatus.OK)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() GetContextToken() failed with statusCodeNew:" + statusCodeNew.ToString());
httpError = HttpStatusFromSecurityStatus(statusCodeNew);
}
else
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() creating new WindowsIdentity() from userContext:" + userContext.DangerousGetHandle().ToString("x8"));
WindowsPrincipal windowsPrincipal = new WindowsPrincipal(CreateWindowsIdentity(userContext.DangerousGetHandle(), context.ProtocolName, WindowsAccountType.Normal, true));
principal = windowsPrincipal;
// if appropriate, cache this credential on this connection
if (UnsafeConnectionNtlmAuthentication && context.ProtocolName == NegotiationInfoClass.NTLM)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() inserting principal#" + ValidationHelper.HashString(principal) + " for connectionId:" + connectionId);
// We may need to call WaitForDisconnect.
if (disconnectResult == null)
{
RegisterForDisconnectNotification(connectionId, ref disconnectResult);
}
if (disconnectResult != null)
{
lock (DisconnectResults.SyncRoot)
{
if (UnsafeConnectionNtlmAuthentication)
{
disconnectResult.AuthenticatedConnection = windowsPrincipal;
}
}
}
else
{
// Registration failed - UnsafeConnectionNtlmAuthentication ignored.
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() RegisterForDisconnectNotification() failed.");
}
}
}
}
}
finally {
if (userContext!=null) {
userContext.Close();
}
}
}
else
{
// auth incomplete
newContext = context;
challenge = (headerScheme==AuthenticationSchemes.Ntlm ? NtlmClient.AuthType : NegotiateClient.AuthType);
if (!String.IsNullOrEmpty(outBlob))
{
challenge += " " + outBlob;
}
}
}
break;
case AuthenticationSchemes.Basic:
try
{
bytes = Convert.FromBase64String(inBlob);
inBlob = WebHeaderCollection.HeaderEncoding.GetString(bytes, 0, bytes.Length);
index = inBlob.IndexOf(':');
if (index!=-1) {
string userName = inBlob.Substring(0, index);
string password = inBlob.Substring(index+1);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() basic identity found, userName:"******"HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() FromBase64String threw a FormatException.");
}
break;
}
if (principal != null)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() got principal:" + ValidationHelper.ToString(principal) + " principal.Identity.Name:" + ValidationHelper.ToString(principal.Identity.Name) + " creating request");
httpContext.SetIdentity(principal, outBlob);
}
else
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() handshake has failed");
if(Logging.On)Logging.PrintWarning(Logging.HttpListener, this, "HandleAuthentication", SR.GetString(SR.net_log_listener_create_valid_identity_failed));
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
httpContext = null;
}
}
// if we're not giving a request to the application, we need to send an error
ArrayList challenges = null;
if (httpContext == null)
{
// If we already have a challenge, just use it. Otherwise put a challenge for each acceptable scheme.
if (challenge != null)
{
AddChallenge(ref challenges, challenge);
}
else
{
// We're starting over. Any context SSPI might have wanted us to keep is useless.
if (newContext != null)
{
if (newContext == context)
{
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
// If we're sending something besides 401, do it here.
if (httpError != HttpStatusCode.Unauthorized)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() failed context#" + ValidationHelper.HashString(context) + " for connectionId:" + connectionId + " because of error:" + httpError.ToString());
SendError(requestId, httpError, null);
return null;
}
challenges = BuildChallenge(authenticationScheme, connectionId, out newContext,
extendedProtectionPolicy, isSecureConnection);
}
}
// Check if we need to call WaitForDisconnect, because if we do and it fails, we want to send a 500 instead.
if (disconnectResult == null && newContext != null)
{
RegisterForDisconnectNotification(connectionId, ref disconnectResult);
// Failed - send 500.
if (disconnectResult == null)
{
if (newContext != null)
{
if (newContext == context)
{
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() failed context#" + ValidationHelper.HashString(context) + " for connectionId:" + connectionId + " because of failed HttpWaitForDisconnect");
SendError(requestId, HttpStatusCode.InternalServerError, null);
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
return null;
}
}
// Update Session if necessary.
if (oldContext != newContext)
{
if (oldContext == context)
{
// Prevent the finally from closing this twice.
context = null;
}
NTAuthentication toClose = oldContext;
oldContext = newContext;
disconnectResult.Session = newContext;
if (toClose != null)
{
// Save digest context in digest cache, we may need it later because of
// subsequest responses to the same req on the same/diff connection
if ((authenticationScheme & AuthenticationSchemes.Digest) != 0)
{
SaveDigestContext(toClose);
}
else
{
toClose.CloseContext();
}
}
}
// Send the 401 here.
if (httpContext == null)
{
SendError(requestId, challenges != null && challenges.Count > 0 ? HttpStatusCode.Unauthorized : HttpStatusCode.Forbidden, challenges);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::HandleAuthentication() SendUnauthorized(Scheme:" + authenticationScheme + ")");
return null;
}
if (!stoleBlob)
{
stoleBlob = true;
httpContext.Request.ReleasePins();
}
return httpContext;
}
catch
{
if (httpContext != null)
{
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
}
if (newContext != null)
{
if (newContext == context)
{
// Prevent the finally from closing this twice.
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
throw;
}
finally
{
try
{
// Clean up the previous context if necessary.
if (oldContext != null && oldContext != newContext)
{
// Clear out Session if it wasn't already.
if (newContext == null && disconnectResult != null)
{
disconnectResult.Session = null;
}
// Save digest context in digest cache, we may need it later because of
// subsequest responses to the same req on the same/diff connection
if ((authenticationScheme & AuthenticationSchemes.Digest) != 0)
{
SaveDigestContext(oldContext);
}
else
{
oldContext.CloseContext();
}
}
// Delete any context created but not stored.
if (context != null && oldContext != context && newContext != context)
{
context.CloseContext();
}
}
finally
{
// Check if the connection got deleted while in this method, and clear out the hashtables if it did.
// In a nested finally because if this doesn't happen, we leak.
if (disconnectResult != null)
{
disconnectResult.FinishOwningDisconnectHandling();
}
}
}
}
internal unsafe bool ValidateRequest(RequestContextBase requestMemory)
{
// Block potential DOS attacks
if (requestMemory.RequestBlob->Headers.UnknownHeaderCount > UnknownHeaderLimit)
{
SendError(requestMemory.RequestBlob->RequestId, HttpStatusCode.BadRequest, null);
return false;
}
return true;
}
internal HttpListenerContext HandleAuthentication(RequestContextBase memoryBlob, out bool stoleBlob)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "HandleAuthentication() memoryBlob:0x" + ((IntPtr)memoryBlob.RequestBlob).ToString("x"));
string challenge = null;
stoleBlob = false;
// Some things we need right away. Lift them out now while it's convenient.
string verb = Interop.HttpApi.GetVerb(memoryBlob.RequestBlob);
string authorizationHeader = Interop.HttpApi.GetKnownHeader(memoryBlob.RequestBlob, (int)HttpRequestHeader.Authorization);
ulong connectionId = memoryBlob.RequestBlob->ConnectionId;
ulong requestId = memoryBlob.RequestBlob->RequestId;
bool isSecureConnection = memoryBlob.RequestBlob->pSslInfo != null;
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"HandleAuthentication() authorizationHeader: ({authorizationHeader})");
// if the app has turned on AuthPersistence, an anonymous request might
// be authenticated by virtue of it coming on a connection that was
// previously authenticated.
// assurance that we do this only for NTLM/Negotiate is not here, but in the
// code that caches WindowsIdentity instances in the Dictionary.
DisconnectAsyncResult disconnectResult;
DisconnectResults.TryGetValue(connectionId, out disconnectResult);
if (UnsafeConnectionNtlmAuthentication)
{
if (authorizationHeader == null)
{
WindowsPrincipal principal = disconnectResult?.AuthenticatedConnection;
if (principal != null)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"Principal: {principal} principal.Identity.Name: {principal.Identity.Name} creating request");
stoleBlob = true;
HttpListenerContext ntlmContext = new HttpListenerContext(this, memoryBlob);
ntlmContext.SetIdentity(principal, null);
ntlmContext.Request.ReleasePins();
return ntlmContext;
}
}
else
{
// They sent an authorization - destroy their previous credentials.
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Clearing principal cache");
if (disconnectResult != null)
{
disconnectResult.AuthenticatedConnection = null;
}
}
}
// Figure out what schemes we're allowing, what context we have.
stoleBlob = true;
HttpListenerContext httpContext = null;
NTAuthentication oldContext = null;
NTAuthentication newContext = null;
NTAuthentication context = null;
AuthenticationSchemes headerScheme = AuthenticationSchemes.None;
AuthenticationSchemes authenticationScheme = AuthenticationSchemes;
ExtendedProtectionPolicy extendedProtectionPolicy = _extendedProtectionPolicy;
try
{
// Take over handling disconnects for now.
if (disconnectResult != null && !disconnectResult.StartOwningDisconnectHandling())
{
// Just disconnected just then. Pretend we didn't see the disconnectResult.
disconnectResult = null;
}
// Pick out the old context now. By default, it'll be removed in the finally, unless context is set somewhere.
if (disconnectResult != null)
{
oldContext = disconnectResult.Session;
}
httpContext = new HttpListenerContext(this, memoryBlob);
AuthenticationSchemeSelector authenticationSelector = _authenticationDelegate;
if (authenticationSelector != null)
{
try
{
httpContext.Request.ReleasePins();
authenticationScheme = authenticationSelector(httpContext.Request);
// Cache the results of authenticationSelector (if any)
httpContext.AuthenticationSchemes = authenticationScheme;
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"AuthenticationScheme: {authenticationScheme}");
}
catch (Exception exception) when (!ExceptionCheck.IsFatal(exception))
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, SR.Format(SR.net_log_listener_delegate_exception, exception));
NetEventSource.Info(this, $"authenticationScheme: {authenticationScheme}");
}
SendError(requestId, HttpStatusCode.InternalServerError, null);
httpContext.Close();
return null;
}
}
else
{
// We didn't give the request to the user yet, so we haven't lost control of the unmanaged blob and can
// continue to reuse the buffer.
stoleBlob = false;
}
ExtendedProtectionSelector extendedProtectionSelector = _extendedProtectionSelectorDelegate;
if (extendedProtectionSelector != null)
{
extendedProtectionPolicy = extendedProtectionSelector(httpContext.Request);
if (extendedProtectionPolicy == null)
{
extendedProtectionPolicy = new ExtendedProtectionPolicy(PolicyEnforcement.Never);
}
// Cache the results of extendedProtectionSelector (if any)
httpContext.ExtendedProtectionPolicy = extendedProtectionPolicy;
}
// Then figure out what scheme they're trying (if any are allowed)
int index = -1;
if (authorizationHeader != null && (authenticationScheme & ~AuthenticationSchemes.Anonymous) != AuthenticationSchemes.None)
{
// Find the end of the scheme name. Trust that HTTP.SYS parsed out just our header ok.
for (index = 0; index < authorizationHeader.Length; index++)
{
if (authorizationHeader[index] == ' ' || authorizationHeader[index] == '\t' ||
authorizationHeader[index] == '\r' || authorizationHeader[index] == '\n')
{
break;
}
}
// Currently only allow one Authorization scheme/header per request.
if (index < authorizationHeader.Length)
{
if ((authenticationScheme & AuthenticationSchemes.Negotiate) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthConstants.Negotiate, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Negotiate;
}
else if ((authenticationScheme & AuthenticationSchemes.Ntlm) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthConstants.NTLM, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Ntlm;
}
else if ((authenticationScheme & AuthenticationSchemes.Digest) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthConstants.Digest, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Digest;
}
else if ((authenticationScheme & AuthenticationSchemes.Basic) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthConstants.Basic, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Basic;
}
else
{
if (NetEventSource.IsEnabled) NetEventSource.Error(this, SR.Format(SR.net_log_listener_unsupported_authentication_scheme, authorizationHeader, authenticationScheme));
}
}
}
// httpError holds the error we will return if an Authorization header is present but can't be authenticated
HttpStatusCode httpError = HttpStatusCode.InternalServerError;
// See if we found an acceptable auth header
if (headerScheme == AuthenticationSchemes.None)
{
if (NetEventSource.IsEnabled) NetEventSource.Error(this, SR.Format(SR.net_log_listener_unmatched_authentication_scheme, authenticationScheme.ToString(), (authorizationHeader == null ? "<null>" : authorizationHeader)));
// If anonymous is allowed, just return the context. Otherwise go for the 401.
if ((authenticationScheme & AuthenticationSchemes.Anonymous) != AuthenticationSchemes.None)
{
if (!stoleBlob)
{
stoleBlob = true;
httpContext.Request.ReleasePins();
}
return httpContext;
}
httpError = HttpStatusCode.Unauthorized;
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
httpContext = null;
}
else
{
throw new NotImplementedException();
}
// if we're not giving a request to the application, we need to send an error
ArrayList challenges = null;
if (httpContext == null)
{
// If we already have a challenge, just use it. Otherwise put a challenge for each acceptable scheme.
if (challenge != null)
{
AddChallenge(ref challenges, challenge);
}
else
{
// We're starting over. Any context SSPI might have wanted us to keep is useless.
if (newContext != null)
{
if (newContext == context)
{
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
// If we're sending something besides 401, do it here.
if (httpError != HttpStatusCode.Unauthorized)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "ConnectionId:" + connectionId + " because of error:" + httpError.ToString());
SendError(requestId, httpError, null);
return null;
}
challenges = BuildChallenge(authenticationScheme, connectionId, out newContext,
extendedProtectionPolicy, isSecureConnection);
}
}
// Check if we need to call WaitForDisconnect, because if we do and it fails, we want to send a 500 instead.
if (disconnectResult == null && newContext != null)
{
RegisterForDisconnectNotification(connectionId, ref disconnectResult);
// Failed - send 500.
if (disconnectResult == null)
{
if (newContext != null)
{
if (newContext == context)
{
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "connectionId:" + connectionId + " because of failed HttpWaitForDisconnect");
SendError(requestId, HttpStatusCode.InternalServerError, null);
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
return null;
}
}
// Update Session if necessary.
if (oldContext != newContext)
{
if (oldContext == context)
{
// Prevent the finally from closing this twice.
context = null;
}
NTAuthentication toClose = oldContext;
oldContext = newContext;
disconnectResult.Session = newContext;
if (toClose != null)
{
// Save digest context in digest cache, we may need it later because of
// subsequest responses to the same req on the same/diff connection
if ((authenticationScheme & AuthenticationSchemes.Digest) != 0)
{
SaveDigestContext(toClose);
}
else
{
toClose.CloseContext();
}
}
}
// Send the 401 here.
if (httpContext == null)
{
SendError(requestId, challenges != null && challenges.Count > 0 ? HttpStatusCode.Unauthorized : HttpStatusCode.Forbidden, challenges);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Scheme:" + authenticationScheme);
return null;
}
if (!stoleBlob)
{
stoleBlob = true;
httpContext.Request.ReleasePins();
}
return httpContext;
}
catch
{
if (httpContext != null)
{
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
}
if (newContext != null)
{
if (newContext == context)
{
// Prevent the finally from closing this twice.
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
throw;
}
finally
{
try
{
// Clean up the previous context if necessary.
if (oldContext != null && oldContext != newContext)
{
// Clear out Session if it wasn't already.
if (newContext == null && disconnectResult != null)
{
disconnectResult.Session = null;
}
// Save digest context in digest cache, we may need it later because of
// subsequest responses to the same req on the same/diff connection
if ((authenticationScheme & AuthenticationSchemes.Digest) != 0)
{
SaveDigestContext(oldContext);
}
else
{
oldContext.CloseContext();
}
}
// Delete any context created but not stored.
if (context != null && oldContext != context && newContext != context)
{
context.CloseContext();
}
}
finally
{
// Check if the connection got deleted while in this method, and clear out the hashtables if it did.
// In a nested finally because if this doesn't happen, we leak.
if (disconnectResult != null)
{
disconnectResult.FinishOwningDisconnectHandling();
}
}
}
}
internal unsafe HttpListenerContext HandleAuthentication(RequestContextBase memoryBlob, out bool stoleBlob)
{
string challenge = null;
HttpListenerContext context3;
stoleBlob = false;
string verb = UnsafeNclNativeMethods.HttpApi.GetVerb(memoryBlob.RequestBlob);
string knownHeader = UnsafeNclNativeMethods.HttpApi.GetKnownHeader(memoryBlob.RequestBlob, 0x18);
ulong connectionId = memoryBlob.RequestBlob.ConnectionId;
ulong requestId = memoryBlob.RequestBlob.RequestId;
bool isSecureConnection = memoryBlob.RequestBlob.pSslInfo != null;
DisconnectAsyncResult disconnectResult = (DisconnectAsyncResult) this.DisconnectResults[connectionId];
if (this.UnsafeConnectionNtlmAuthentication)
{
if (knownHeader == null)
{
WindowsPrincipal principal = (disconnectResult == null) ? null : disconnectResult.AuthenticatedConnection;
if (principal != null)
{
stoleBlob = true;
HttpListenerContext context = new HttpListenerContext(this, memoryBlob);
context.SetIdentity(principal, null);
context.Request.ReleasePins();
return context;
}
}
else if (disconnectResult != null)
{
disconnectResult.AuthenticatedConnection = null;
}
}
stoleBlob = true;
HttpListenerContext context2 = null;
NTAuthentication digestContext = null;
NTAuthentication newContext = null;
NTAuthentication authentication3 = null;
System.Net.AuthenticationSchemes none = System.Net.AuthenticationSchemes.None;
System.Net.AuthenticationSchemes authenticationSchemes = this.AuthenticationSchemes;
System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy extendedProtectionPolicy = this.m_ExtendedProtectionPolicy;
try
{
ExtendedProtectionSelector selector;
SecurityStatus invalidToken;
ChannelBinding binding;
string str6;
ArrayList list;
if ((disconnectResult != null) && !disconnectResult.StartOwningDisconnectHandling())
{
disconnectResult = null;
}
if (disconnectResult != null)
{
digestContext = disconnectResult.Session;
}
context2 = new HttpListenerContext(this, memoryBlob);
AuthenticationSelectorInfo authenticationDelegate = this.m_AuthenticationDelegate;
if (authenticationDelegate != null)
{
try
{
context2.Request.ReleasePins();
authenticationSchemes = authenticationDelegate.Delegate(context2.Request);
if (!authenticationDelegate.AdvancedAuth && ((authenticationSchemes & (System.Net.AuthenticationSchemes.IntegratedWindowsAuthentication | System.Net.AuthenticationSchemes.Digest)) != System.Net.AuthenticationSchemes.None))
{
throw this.m_SecurityException;
}
goto Label_01A2;
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception))
{
throw;
}
if (Logging.On)
{
Logging.PrintError(Logging.HttpListener, this, "HandleAuthentication", SR.GetString("net_log_listener_delegate_exception", new object[] { exception }));
}
this.SendError(requestId, HttpStatusCode.InternalServerError, null);
context2.Close();
return null;
}
}
stoleBlob = false;
Label_01A2:
selector = this.m_ExtendedProtectionSelectorDelegate;
if (selector != null)
{
extendedProtectionPolicy = selector(context2.Request);
if (extendedProtectionPolicy == null)
{
extendedProtectionPolicy = new System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy(PolicyEnforcement.Never);
}
}
int length = -1;
if ((knownHeader != null) && ((authenticationSchemes & ~System.Net.AuthenticationSchemes.Anonymous) != System.Net.AuthenticationSchemes.None))
{
length = 0;
while (length < knownHeader.Length)
{
if (((knownHeader[length] == ' ') || (knownHeader[length] == '\t')) || ((knownHeader[length] == '\r') || (knownHeader[length] == '\n')))
{
break;
}
length++;
}
if (length < knownHeader.Length)
{
if (((authenticationSchemes & System.Net.AuthenticationSchemes.Negotiate) != System.Net.AuthenticationSchemes.None) && (string.Compare(knownHeader, 0, "Negotiate", 0, length, StringComparison.OrdinalIgnoreCase) == 0))
{
none = System.Net.AuthenticationSchemes.Negotiate;
}
else if (((authenticationSchemes & System.Net.AuthenticationSchemes.Ntlm) != System.Net.AuthenticationSchemes.None) && (string.Compare(knownHeader, 0, "NTLM", 0, length, StringComparison.OrdinalIgnoreCase) == 0))
{
none = System.Net.AuthenticationSchemes.Ntlm;
}
else if (((authenticationSchemes & System.Net.AuthenticationSchemes.Digest) != System.Net.AuthenticationSchemes.None) && (string.Compare(knownHeader, 0, "Digest", 0, length, StringComparison.OrdinalIgnoreCase) == 0))
{
none = System.Net.AuthenticationSchemes.Digest;
}
else if (((authenticationSchemes & System.Net.AuthenticationSchemes.Basic) != System.Net.AuthenticationSchemes.None) && (string.Compare(knownHeader, 0, "Basic", 0, length, StringComparison.OrdinalIgnoreCase) == 0))
{
none = System.Net.AuthenticationSchemes.Basic;
}
else if (Logging.On)
{
Logging.PrintWarning(Logging.HttpListener, this, "HandleAuthentication", SR.GetString("net_log_listener_unsupported_authentication_scheme", new object[] { knownHeader, authenticationSchemes }));
}
}
}
HttpStatusCode internalServerError = HttpStatusCode.InternalServerError;
bool flag2 = false;
if (none == System.Net.AuthenticationSchemes.None)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.HttpListener, this, "HandleAuthentication", SR.GetString("net_log_listener_unmatched_authentication_scheme", new object[] { ValidationHelper.ToString(authenticationSchemes), (knownHeader == null) ? "<null>" : knownHeader }));
}
if ((authenticationSchemes & System.Net.AuthenticationSchemes.Anonymous) != System.Net.AuthenticationSchemes.None)
{
if (!stoleBlob)
{
stoleBlob = true;
context2.Request.ReleasePins();
}
return context2;
}
internalServerError = HttpStatusCode.Unauthorized;
context2.Request.DetachBlob(memoryBlob);
context2.Close();
context2 = null;
goto Label_07AA;
}
byte[] bytes = null;
byte[] inArray = null;
string str4 = null;
length++;
while (length < knownHeader.Length)
{
if (((knownHeader[length] != ' ') && (knownHeader[length] != '\t')) && ((knownHeader[length] != '\r') && (knownHeader[length] != '\n')))
{
break;
}
length++;
}
string incomingBlob = (length < knownHeader.Length) ? knownHeader.Substring(length) : "";
IPrincipal principal2 = null;
switch (none)
{
case System.Net.AuthenticationSchemes.Digest:
{
binding = this.GetChannelBinding(connectionId, isSecureConnection, extendedProtectionPolicy);
authentication3 = new NTAuthentication(true, "WDigest", null, this.GetContextFlags(extendedProtectionPolicy, isSecureConnection), binding);
str4 = authentication3.GetOutgoingDigestBlob(incomingBlob, verb, null, this.Realm, false, false, out invalidToken);
if (invalidToken == SecurityStatus.OK)
{
str4 = null;
}
if (!authentication3.IsValidContext)
{
break;
}
SafeCloseHandle contextToken = null;
try
{
if (!this.CheckSpn(authentication3, isSecureConnection, extendedProtectionPolicy))
{
internalServerError = HttpStatusCode.Unauthorized;
}
else
{
context2.Request.ServiceName = authentication3.ClientSpecifiedSpn;
contextToken = authentication3.GetContextToken(out invalidToken);
if (invalidToken != SecurityStatus.OK)
{
internalServerError = this.HttpStatusFromSecurityStatus(invalidToken);
}
else if (contextToken == null)
{
internalServerError = HttpStatusCode.Unauthorized;
}
else
{
principal2 = new WindowsPrincipal(this.CreateWindowsIdentity(contextToken.DangerousGetHandle(), "Digest", WindowsAccountType.Normal, true));
}
}
}
finally
{
if (contextToken != null)
{
contextToken.Close();
}
}
newContext = authentication3;
if (str4 != null)
{
challenge = "Digest " + str4;
}
goto Label_0761;
}
case System.Net.AuthenticationSchemes.Negotiate:
case System.Net.AuthenticationSchemes.Ntlm:
str6 = (none == System.Net.AuthenticationSchemes.Ntlm) ? "NTLM" : "Negotiate";
if ((digestContext == null) || !(digestContext.Package == str6))
{
goto Label_0549;
}
authentication3 = digestContext;
goto Label_056D;
case System.Net.AuthenticationSchemes.Basic:
try
{
bytes = Convert.FromBase64String(incomingBlob);
incomingBlob = WebHeaderCollection.HeaderEncoding.GetString(bytes, 0, bytes.Length);
length = incomingBlob.IndexOf(':');
if (length != -1)
{
string username = incomingBlob.Substring(0, length);
string password = incomingBlob.Substring(length + 1);
principal2 = new GenericPrincipal(new HttpListenerBasicIdentity(username, password), null);
}
else
{
internalServerError = HttpStatusCode.BadRequest;
}
}
catch (FormatException)
{
}
goto Label_0761;
default:
goto Label_0761;
}
internalServerError = this.HttpStatusFromSecurityStatus(invalidToken);
goto Label_0761;
Label_0549:
binding = this.GetChannelBinding(connectionId, isSecureConnection, extendedProtectionPolicy);
authentication3 = new NTAuthentication(true, str6, null, this.GetContextFlags(extendedProtectionPolicy, isSecureConnection), binding);
Label_056D:
try
{
bytes = Convert.FromBase64String(incomingBlob);
}
catch (FormatException)
{
internalServerError = HttpStatusCode.BadRequest;
flag2 = true;
}
if (!flag2)
{
inArray = authentication3.GetOutgoingBlob(bytes, false, out invalidToken);
flag2 = !authentication3.IsValidContext;
if (flag2)
{
if (((invalidToken == SecurityStatus.InvalidHandle) && (digestContext == null)) && ((bytes != null) && (bytes.Length > 0)))
{
invalidToken = SecurityStatus.InvalidToken;
}
internalServerError = this.HttpStatusFromSecurityStatus(invalidToken);
}
}
if (inArray != null)
{
str4 = Convert.ToBase64String(inArray);
}
if (!flag2)
{
if (authentication3.IsCompleted)
{
SafeCloseHandle handle2 = null;
try
{
if (!this.CheckSpn(authentication3, isSecureConnection, extendedProtectionPolicy))
{
internalServerError = HttpStatusCode.Unauthorized;
}
else
{
context2.Request.ServiceName = authentication3.ClientSpecifiedSpn;
handle2 = authentication3.GetContextToken(out invalidToken);
if (invalidToken != SecurityStatus.OK)
{
internalServerError = this.HttpStatusFromSecurityStatus(invalidToken);
}
else
{
WindowsPrincipal principal3 = new WindowsPrincipal(this.CreateWindowsIdentity(handle2.DangerousGetHandle(), authentication3.ProtocolName, WindowsAccountType.Normal, true));
principal2 = principal3;
if (this.UnsafeConnectionNtlmAuthentication && (authentication3.ProtocolName == "NTLM"))
{
if (disconnectResult == null)
{
this.RegisterForDisconnectNotification(connectionId, ref disconnectResult);
}
if (disconnectResult != null)
{
lock (this.DisconnectResults.SyncRoot)
{
if (this.UnsafeConnectionNtlmAuthentication)
{
disconnectResult.AuthenticatedConnection = principal3;
}
}
}
}
}
}
goto Label_0761;
}
finally
{
if (handle2 != null)
{
handle2.Close();
}
}
}
newContext = authentication3;
challenge = (none == System.Net.AuthenticationSchemes.Ntlm) ? "NTLM" : "Negotiate";
if (!string.IsNullOrEmpty(str4))
{
challenge = challenge + " " + str4;
}
}
Label_0761:
if (principal2 != null)
{
context2.SetIdentity(principal2, str4);
}
else
{
if (Logging.On)
{
Logging.PrintWarning(Logging.HttpListener, this, "HandleAuthentication", SR.GetString("net_log_listener_create_valid_identity_failed"));
}
context2.Request.DetachBlob(memoryBlob);
context2.Close();
context2 = null;
}
Label_07AA:
list = null;
if (context2 == null)
{
if (challenge != null)
{
AddChallenge(ref list, challenge);
}
else
{
if (newContext != null)
{
if (newContext == authentication3)
{
authentication3 = null;
}
if (newContext != digestContext)
{
NTAuthentication authentication4 = newContext;
newContext = null;
authentication4.CloseContext();
}
else
{
newContext = null;
}
}
if (internalServerError != HttpStatusCode.Unauthorized)
{
this.SendError(requestId, internalServerError, null);
return null;
}
list = this.BuildChallenge(authenticationSchemes, connectionId, out newContext, extendedProtectionPolicy, isSecureConnection);
}
}
if ((disconnectResult == null) && (newContext != null))
{
this.RegisterForDisconnectNotification(connectionId, ref disconnectResult);
if (disconnectResult == null)
{
if (newContext != null)
{
if (newContext == authentication3)
{
authentication3 = null;
}
if (newContext != digestContext)
{
NTAuthentication authentication5 = newContext;
newContext = null;
authentication5.CloseContext();
}
else
{
newContext = null;
}
}
this.SendError(requestId, HttpStatusCode.InternalServerError, null);
context2.Request.DetachBlob(memoryBlob);
context2.Close();
return null;
}
}
if (digestContext != newContext)
{
if (digestContext == authentication3)
{
authentication3 = null;
}
NTAuthentication authentication6 = digestContext;
digestContext = newContext;
disconnectResult.Session = newContext;
if (authentication6 != null)
{
if ((authenticationSchemes & System.Net.AuthenticationSchemes.Digest) != System.Net.AuthenticationSchemes.None)
{
this.SaveDigestContext(authentication6);
}
else
{
authentication6.CloseContext();
}
}
}
if (context2 == null)
{
this.SendError(requestId, ((list != null) && (list.Count > 0)) ? HttpStatusCode.Unauthorized : HttpStatusCode.Forbidden, list);
return null;
}
if (!stoleBlob)
{
stoleBlob = true;
context2.Request.ReleasePins();
}
context3 = context2;
}
catch
{
if (context2 != null)
{
context2.Request.DetachBlob(memoryBlob);
context2.Close();
}
if (newContext != null)
{
if (newContext == authentication3)
{
authentication3 = null;
}
if (newContext != digestContext)
{
NTAuthentication authentication7 = newContext;
newContext = null;
authentication7.CloseContext();
}
else
{
newContext = null;
}
}
throw;
}
finally
{
try
{
if ((digestContext != null) && (digestContext != newContext))
{
if ((newContext == null) && (disconnectResult != null))
{
disconnectResult.Session = null;
}
if ((authenticationSchemes & System.Net.AuthenticationSchemes.Digest) != System.Net.AuthenticationSchemes.None)
{
this.SaveDigestContext(digestContext);
}
else
{
digestContext.CloseContext();
}
}
if (((authentication3 != null) && (digestContext != authentication3)) && (newContext != authentication3))
{
authentication3.CloseContext();
}
}
finally
{
if (disconnectResult != null)
{
disconnectResult.FinishOwningDisconnectHandling();
}
}
}
return context3;
}
//should only be called from httplistenercontext
internal void Close()
{
if (NetEventSource.IsEnabled) NetEventSource.Enter(this);
RequestContextBase memoryBlob = _memoryBlob;
if (memoryBlob != null)
{
memoryBlob.Close();
_memoryBlob = null;
}
_isDisposed = true;
if (NetEventSource.IsEnabled) NetEventSource.Exit(this);
}
internal HttpListenerRequest(HttpListenerContext httpContext, RequestContextBase memoryBlob)
{
if (Logging.On) Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpContext#" + ValidationHelper.HashString(httpContext) + " memoryBlob# " + ValidationHelper.HashString((IntPtr) memoryBlob.RequestBlob));
if(Logging.On)Logging.Associate(Logging.HttpListener, this, httpContext);
m_HttpContext = httpContext;
m_MemoryBlob = memoryBlob;
m_BoundaryType = BoundaryType.None;
// Set up some of these now to avoid refcounting on memory blob later.
m_RequestId = memoryBlob.RequestBlob->RequestId;
m_ConnectionId = memoryBlob.RequestBlob->ConnectionId;
m_SslStatus = memoryBlob.RequestBlob->pSslInfo == null ? SslStatus.Insecure :
memoryBlob.RequestBlob->pSslInfo->SslClientCertNegotiated == 0 ? SslStatus.NoClientCert :
SslStatus.ClientCert;
if (memoryBlob.RequestBlob->pRawUrl != null && memoryBlob.RequestBlob->RawUrlLength > 0) {
m_RawUrl = Marshal.PtrToStringAnsi((IntPtr) memoryBlob.RequestBlob->pRawUrl, memoryBlob.RequestBlob->RawUrlLength);
}
UnsafeNclNativeMethods.HttpApi.HTTP_COOKED_URL cookedUrl = memoryBlob.RequestBlob->CookedUrl;
if (cookedUrl.pHost != null && cookedUrl.HostLength > 0) {
m_CookedUrlHost = Marshal.PtrToStringUni((IntPtr)cookedUrl.pHost, cookedUrl.HostLength / 2);
}
if (cookedUrl.pAbsPath != null && cookedUrl.AbsPathLength > 0) {
m_CookedUrlPath = Marshal.PtrToStringUni((IntPtr)cookedUrl.pAbsPath, cookedUrl.AbsPathLength / 2);
}
if (cookedUrl.pQueryString != null && cookedUrl.QueryStringLength > 0) {
m_CookedUrlQuery = Marshal.PtrToStringUni((IntPtr)cookedUrl.pQueryString, cookedUrl.QueryStringLength / 2);
}
m_Version = new Version(memoryBlob.RequestBlob->Version.MajorVersion, memoryBlob.RequestBlob->Version.MinorVersion);
m_ClientCertState = ListenerClientCertState.NotInitialized;
m_KeepAlive = TriState.Unspecified;
GlobalLog.Print("HttpListenerContext#" + ValidationHelper.HashString(this) + "::.ctor() RequestId:" + RequestId + " ConnectionId:" + m_ConnectionId + " RawConnectionId:" + memoryBlob.RequestBlob->RawConnectionId + " UrlContext:" + memoryBlob.RequestBlob->UrlContext + " RawUrl:" + m_RawUrl + " Version:" + m_Version.ToString() + " Secure:" + m_SslStatus.ToString());
if(Logging.On)Logging.PrintInfo(Logging.HttpListener, this, ".ctor", "httpContext#"+ ValidationHelper.HashString(httpContext)+ " RequestUri:" + ValidationHelper.ToString(RequestUri) + " Content-Length:" + ValidationHelper.ToString(ContentLength64) + " HTTP Method:" + ValidationHelper.ToString(HttpMethod));
// Log headers
if(Logging.On) {
StringBuilder sb = new StringBuilder("HttpListenerRequest Headers:\n");
for (int i=0; i<Headers.Count; i++) {
sb.Append("\t");
sb.Append(Headers.GetKey(i));
sb.Append(" : ");
sb.Append(Headers.Get(i));
sb.Append("\n");
}
Logging.PrintInfo(Logging.HttpListener, this, ".ctor", sb.ToString());
}
}
// Use this to save the blob from dispose if this object was never used (never given to a user) and is about to be
// disposed.
internal void DetachBlob(RequestContextBase memoryBlob)
{
if (memoryBlob != null && (object)memoryBlob == (object)_memoryBlob)
{
_memoryBlob = null;
}
}
internal void Close()
{
if (Logging.On)
{
Logging.Enter(Logging.HttpListener, this, "Close", "");
}
RequestContextBase memoryBlob = this.m_MemoryBlob;
if (memoryBlob != null)
{
memoryBlob.Close();
this.m_MemoryBlob = null;
}
this.m_IsDisposed = true;
if (Logging.On)
{
Logging.Exit(Logging.HttpListener, this, "Close", "");
}
}
internal HttpListenerContext HandleAuthentication(RequestContextBase memoryBlob, out bool stoleBlob)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "HandleAuthentication() memoryBlob:0x" + ((IntPtr)memoryBlob.RequestBlob).ToString("x"));
string challenge = null;
stoleBlob = false;
// Some things we need right away. Lift them out now while it's convenient.
string verb = Interop.HttpApi.GetVerb(memoryBlob.RequestBlob);
string authorizationHeader = Interop.HttpApi.GetKnownHeader(memoryBlob.RequestBlob, (int)HttpRequestHeader.Authorization);
ulong connectionId = memoryBlob.RequestBlob->ConnectionId;
ulong requestId = memoryBlob.RequestBlob->RequestId;
bool isSecureConnection = memoryBlob.RequestBlob->pSslInfo != null;
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"HandleAuthentication() authorizationHeader: ({authorizationHeader})");
// if the app has turned on AuthPersistence, an anonymous request might
// be authenticated by virtue of it coming on a connection that was
// previously authenticated.
// assurance that we do this only for NTLM/Negotiate is not here, but in the
// code that caches WindowsIdentity instances in the Dictionary.
DisconnectAsyncResult disconnectResult;
DisconnectResults.TryGetValue(connectionId, out disconnectResult);
if (UnsafeConnectionNtlmAuthentication)
{
if (authorizationHeader == null)
{
WindowsPrincipal principal = disconnectResult?.AuthenticatedConnection;
if (principal != null)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"Principal: {principal} principal.Identity.Name: {principal.Identity.Name} creating request");
stoleBlob = true;
HttpListenerContext ntlmContext = new HttpListenerContext(this, memoryBlob);
ntlmContext.SetIdentity(principal, null);
ntlmContext.Request.ReleasePins();
return ntlmContext;
}
}
else
{
// They sent an authorization - destroy their previous credentials.
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Clearing principal cache");
if (disconnectResult != null)
{
disconnectResult.AuthenticatedConnection = null;
}
}
}
// Figure out what schemes we're allowing, what context we have.
stoleBlob = true;
HttpListenerContext httpContext = null;
NTAuthentication oldContext = null;
NTAuthentication newContext = null;
NTAuthentication context = null;
AuthenticationSchemes headerScheme = AuthenticationSchemes.None;
AuthenticationSchemes authenticationScheme = AuthenticationSchemes;
ExtendedProtectionPolicy extendedProtectionPolicy = _extendedProtectionPolicy;
try
{
// Take over handling disconnects for now.
if (disconnectResult != null && !disconnectResult.StartOwningDisconnectHandling())
{
// Just disconnected just then. Pretend we didn't see the disconnectResult.
disconnectResult = null;
}
// Pick out the old context now. By default, it'll be removed in the finally, unless context is set somewhere.
if (disconnectResult != null)
{
oldContext = disconnectResult.Session;
}
httpContext = new HttpListenerContext(this, memoryBlob);
AuthenticationSchemeSelector authenticationSelector = _authenticationDelegate;
if (authenticationSelector != null)
{
try
{
httpContext.Request.ReleasePins();
authenticationScheme = authenticationSelector(httpContext.Request);
// Cache the results of authenticationSelector (if any)
httpContext.AuthenticationSchemes = authenticationScheme;
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"AuthenticationScheme: {authenticationScheme}");
}
catch (Exception exception) when (!ExceptionCheck.IsFatal(exception))
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, SR.Format(SR.net_log_listener_delegate_exception, exception));
NetEventSource.Info(this, $"authenticationScheme: {authenticationScheme}");
}
SendError(requestId, HttpStatusCode.InternalServerError, null);
httpContext.Close();
return null;
}
}
else
{
// We didn't give the request to the user yet, so we haven't lost control of the unmanaged blob and can
// continue to reuse the buffer.
stoleBlob = false;
}
ExtendedProtectionSelector extendedProtectionSelector = _extendedProtectionSelectorDelegate;
if (extendedProtectionSelector != null)
{
extendedProtectionPolicy = extendedProtectionSelector(httpContext.Request);
if (extendedProtectionPolicy == null)
{
extendedProtectionPolicy = new ExtendedProtectionPolicy(PolicyEnforcement.Never);
}
// Cache the results of extendedProtectionSelector (if any)
httpContext.ExtendedProtectionPolicy = extendedProtectionPolicy;
}
// Then figure out what scheme they're trying (if any are allowed)
int index = -1;
if (authorizationHeader != null && (authenticationScheme & ~AuthenticationSchemes.Anonymous) != AuthenticationSchemes.None)
{
// Find the end of the scheme name. Trust that HTTP.SYS parsed out just our header ok.
for (index = 0; index < authorizationHeader.Length; index++)
{
if (authorizationHeader[index] == ' ' || authorizationHeader[index] == '\t' ||
authorizationHeader[index] == '\r' || authorizationHeader[index] == '\n')
{
break;
}
}
// Currently only allow one Authorization scheme/header per request.
if (index < authorizationHeader.Length)
{
if ((authenticationScheme & AuthenticationSchemes.Negotiate) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthenticationTypes.Negotiate, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Negotiate;
}
else if ((authenticationScheme & AuthenticationSchemes.Ntlm) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthenticationTypes.NTLM, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Ntlm;
}
else if ((authenticationScheme & AuthenticationSchemes.Basic) != AuthenticationSchemes.None &&
string.Compare(authorizationHeader, 0, AuthenticationTypes.Basic, 0, index, StringComparison.OrdinalIgnoreCase) == 0)
{
headerScheme = AuthenticationSchemes.Basic;
}
else
{
if (NetEventSource.IsEnabled) NetEventSource.Error(this, SR.Format(SR.net_log_listener_unsupported_authentication_scheme, authorizationHeader, authenticationScheme));
}
}
}
// httpError holds the error we will return if an Authorization header is present but can't be authenticated
HttpStatusCode httpError = HttpStatusCode.InternalServerError;
bool error = false;
// See if we found an acceptable auth header
if (headerScheme == AuthenticationSchemes.None)
{
if (NetEventSource.IsEnabled) NetEventSource.Error(this, SR.Format(SR.net_log_listener_unmatched_authentication_scheme, authenticationScheme.ToString(), (authorizationHeader == null ? "<null>" : authorizationHeader)));
// If anonymous is allowed, just return the context. Otherwise go for the 401.
if ((authenticationScheme & AuthenticationSchemes.Anonymous) != AuthenticationSchemes.None)
{
if (!stoleBlob)
{
stoleBlob = true;
httpContext.Request.ReleasePins();
}
return httpContext;
}
httpError = HttpStatusCode.Unauthorized;
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
httpContext = null;
}
else
{
// Perform Authentication
byte[] bytes = null;
byte[] decodedOutgoingBlob = null;
string outBlob = null;
// Find the beginning of the blob. Trust that HTTP.SYS parsed out just our header ok.
for (index++; index < authorizationHeader.Length; index++)
{
if (authorizationHeader[index] != ' ' && authorizationHeader[index] != '\t' &&
authorizationHeader[index] != '\r' && authorizationHeader[index] != '\n')
{
break;
}
}
string inBlob = index < authorizationHeader.Length ? authorizationHeader.Substring(index) : "";
IPrincipal principal = null;
SecurityStatusPal statusCodeNew;
ChannelBinding binding;
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"Performing Authentication headerScheme: {headerScheme}");
switch (headerScheme)
{
case AuthenticationSchemes.Negotiate:
case AuthenticationSchemes.Ntlm:
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"context: {oldContext} for connectionId: {connectionId}");
string package = headerScheme == AuthenticationSchemes.Ntlm ? NegotiationInfoClass.NTLM : NegotiationInfoClass.Negotiate;
if (oldContext != null && oldContext.Package == package)
{
context = oldContext;
}
else
{
binding = GetChannelBinding(connectionId, isSecureConnection, extendedProtectionPolicy);
ContextFlagsPal contextFlags = GetContextFlags(extendedProtectionPolicy, isSecureConnection);
context = new NTAuthentication(true, package, CredentialCache.DefaultNetworkCredentials, null, contextFlags, binding);
}
try
{
bytes = Convert.FromBase64String(inBlob);
}
catch (FormatException)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"FormatException from FormBase64String");
httpError = HttpStatusCode.BadRequest;
error = true;
}
if (!error)
{
decodedOutgoingBlob = context.GetOutgoingBlob(bytes, false, out statusCodeNew);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"GetOutgoingBlob returned IsCompleted: {context.IsCompleted} and statusCodeNew: {statusCodeNew}");
error = !context.IsValidContext;
if (error)
{
// SSPI Workaround
// If a client sends up a blob on the initial request, Negotiate returns SEC_E_INVALID_HANDLE
// when it should return SEC_E_INVALID_TOKEN.
if (statusCodeNew.ErrorCode == SecurityStatusPalErrorCode.InvalidHandle && oldContext == null && bytes != null && bytes.Length > 0)
{
statusCodeNew = new SecurityStatusPal(SecurityStatusPalErrorCode.InvalidToken);
}
httpError = HttpStatusFromSecurityStatus(statusCodeNew.ErrorCode);
}
}
if (decodedOutgoingBlob != null)
{
outBlob = Convert.ToBase64String(decodedOutgoingBlob);
}
if (!error)
{
if (context.IsCompleted)
{
SecurityContextTokenHandle userContext = null;
try
{
if (!CheckSpn(context, isSecureConnection, extendedProtectionPolicy))
{
httpError = HttpStatusCode.Unauthorized;
}
else
{
httpContext.Request.ServiceName = context.ClientSpecifiedSpn;
SafeDeleteContext securityContext = context.GetContext(out statusCodeNew);
if (statusCodeNew.ErrorCode != SecurityStatusPalErrorCode.OK)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this,
$"HandleAuthentication GetContextToken failed with statusCodeNew: {statusCodeNew}");
}
httpError = HttpStatusFromSecurityStatus(statusCodeNew.ErrorCode);
}
else
{
SSPIWrapper.QuerySecurityContextToken(GlobalSSPI.SSPIAuth, securityContext, out userContext);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this,
$"HandleAuthentication creating new WindowsIdentity from user context: {userContext.DangerousGetHandle().ToString("x8")}");
}
WindowsPrincipal windowsPrincipal = new WindowsPrincipal(
new WindowsIdentity(userContext.DangerousGetHandle(), context.ProtocolName));
principal = windowsPrincipal;
// if appropriate, cache this credential on this connection
if (UnsafeConnectionNtlmAuthentication && context.ProtocolName == NegotiationInfoClass.NTLM)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this,
$"HandleAuthentication inserting principal: {principal} for connectionId: {connectionId}");
}
// We may need to call WaitForDisconnect.
if (disconnectResult == null)
{
RegisterForDisconnectNotification(connectionId, ref disconnectResult);
}
if (disconnectResult != null)
{
lock ((DisconnectResults as ICollection).SyncRoot)
{
if (UnsafeConnectionNtlmAuthentication)
{
disconnectResult.AuthenticatedConnection = windowsPrincipal;
}
}
}
else
{
// Registration failed - UnsafeConnectionNtlmAuthentication ignored.
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"HandleAuthentication RegisterForDisconnectNotification failed.");
}
}
}
}
}
}
finally
{
if (userContext != null)
{
userContext.Close();
}
}
}
else
{
// auth incomplete
newContext = context;
challenge = (headerScheme == AuthenticationSchemes.Ntlm ? NegotiationInfoClass.NTLM : NegotiationInfoClass.Negotiate);
if (!String.IsNullOrEmpty(outBlob))
{
challenge += " " + outBlob;
}
}
}
break;
case AuthenticationSchemes.Basic:
try
{
bytes = Convert.FromBase64String(inBlob);
inBlob = WebHeaderEncoding.GetString(bytes, 0, bytes.Length);
index = inBlob.IndexOf(':');
if (index != -1)
{
string userName = inBlob.Substring(0, index);
string password = inBlob.Substring(index + 1);
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"Basic Identity found, userName: {userName}");
}
principal = new GenericPrincipal(new HttpListenerBasicIdentity(userName, password), null);
}
else
{
httpError = HttpStatusCode.BadRequest;
}
}
catch (FormatException)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"FromBase64String threw a FormatException.");
}
}
break;
}
if (principal != null)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, $"Got principal: {principal}, IdentityName: {principal.Identity.Name} for creating request.");
}
httpContext.SetIdentity(principal, outBlob);
}
else
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this, "Handshake has failed.");
}
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
httpContext = null;
}
}
// if we're not giving a request to the application, we need to send an error
ArrayList challenges = null;
if (httpContext == null)
{
// If we already have a challenge, just use it. Otherwise put a challenge for each acceptable scheme.
if (challenge != null)
{
AddChallenge(ref challenges, challenge);
}
else
{
// We're starting over. Any context SSPI might have wanted us to keep is useless.
if (newContext != null)
{
if (newContext == context)
{
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
// If we're sending something besides 401, do it here.
if (httpError != HttpStatusCode.Unauthorized)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "ConnectionId:" + connectionId + " because of error:" + httpError.ToString());
SendError(requestId, httpError, null);
return null;
}
challenges = BuildChallenge(authenticationScheme, connectionId, out newContext,
extendedProtectionPolicy, isSecureConnection);
}
}
// Check if we need to call WaitForDisconnect, because if we do and it fails, we want to send a 500 instead.
if (disconnectResult == null && newContext != null)
{
RegisterForDisconnectNotification(connectionId, ref disconnectResult);
// Failed - send 500.
if (disconnectResult == null)
{
if (newContext != null)
{
if (newContext == context)
{
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "connectionId:" + connectionId + " because of failed HttpWaitForDisconnect");
SendError(requestId, HttpStatusCode.InternalServerError, null);
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
return null;
}
}
// Update Session if necessary.
if (oldContext != newContext)
{
if (oldContext == context)
{
// Prevent the finally from closing this twice.
context = null;
}
NTAuthentication toClose = oldContext;
oldContext = newContext;
disconnectResult.Session = newContext;
if (toClose != null)
{
toClose.CloseContext();
}
}
// Send the 401 here.
if (httpContext == null)
{
SendError(requestId, challenges != null && challenges.Count > 0 ? HttpStatusCode.Unauthorized : HttpStatusCode.Forbidden, challenges);
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Scheme:" + authenticationScheme);
return null;
}
if (!stoleBlob)
{
stoleBlob = true;
httpContext.Request.ReleasePins();
}
return httpContext;
}
catch
{
if (httpContext != null)
{
httpContext.Request.DetachBlob(memoryBlob);
httpContext.Close();
}
if (newContext != null)
{
if (newContext == context)
{
// Prevent the finally from closing this twice.
context = null;
}
if (newContext != oldContext)
{
NTAuthentication toClose = newContext;
newContext = null;
toClose.CloseContext();
}
else
{
newContext = null;
}
}
throw;
}
finally
{
try
{
// Clean up the previous context if necessary.
if (oldContext != null && oldContext != newContext)
{
// Clear out Session if it wasn't already.
if (newContext == null && disconnectResult != null)
{
disconnectResult.Session = null;
}
oldContext.CloseContext();
}
// Delete any context created but not stored.
if (context != null && oldContext != context && newContext != context)
{
context.CloseContext();
}
}
finally
{
// Check if the connection got deleted while in this method, and clear out the hashtables if it did.
// In a nested finally because if this doesn't happen, we leak.
if (disconnectResult != null)
{
disconnectResult.FinishOwningDisconnectHandling();
}
}
}
}
