private bool XPUpdate(string challenge, HttpWebRequest httpWebRequest)
{
SecurityStatus status;
NTAuthentication securityContext = httpWebRequest.CurrentAuthenticationState.GetSecurityContext(this);
if (securityContext == null)
{
return(false);
}
int index = (challenge == null) ? -1 : AuthenticationManager.FindSubstringNotInQuotes(challenge, Signature);
if (index < 0)
{
httpWebRequest.ServicePoint.SetCachedChannelBinding(httpWebRequest.ChallengedUri, securityContext.ChannelBinding);
this.ClearSession(httpWebRequest);
return(true);
}
if (httpWebRequest.ResponseStatusCode != httpWebRequest.CurrentAuthenticationState.StatusCodeMatch)
{
httpWebRequest.ServicePoint.SetCachedChannelBinding(httpWebRequest.ChallengedUri, securityContext.ChannelBinding);
this.ClearSession(httpWebRequest);
return(true);
}
string incomingBlob = RefineDigestChallenge(challenge, index);
securityContext.GetOutgoingDigestBlob(incomingBlob, httpWebRequest.CurrentMethod.Name, null, null, false, true, out status);
httpWebRequest.CurrentAuthenticationState.Authorization.MutuallyAuthenticated = securityContext.IsMutualAuthFlag;
return(securityContext.IsCompleted);
}
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;
}
private ArrayList BuildChallenge(System.Net.AuthenticationSchemes authenticationScheme, ulong connectionId, out NTAuthentication newContext, System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy policy, bool isSecureConnection)
{
ArrayList challenges = null;
newContext = null;
if ((authenticationScheme & System.Net.AuthenticationSchemes.Negotiate) != System.Net.AuthenticationSchemes.None)
{
AddChallenge(ref challenges, "Negotiate");
}
if ((authenticationScheme & System.Net.AuthenticationSchemes.Ntlm) != System.Net.AuthenticationSchemes.None)
{
AddChallenge(ref challenges, "NTLM");
}
if ((authenticationScheme & System.Net.AuthenticationSchemes.Digest) != System.Net.AuthenticationSchemes.None)
{
NTAuthentication authentication = null;
try
{
SecurityStatus status;
string str = null;
ChannelBinding channelBinding = this.GetChannelBinding(connectionId, isSecureConnection, policy);
authentication = new NTAuthentication(true, "WDigest", null, this.GetContextFlags(policy, isSecureConnection), channelBinding);
str = authentication.GetOutgoingDigestBlob(null, null, null, this.Realm, false, false, out status);
if (authentication.IsValidContext)
{
newContext = authentication;
}
AddChallenge(ref challenges, "Digest" + (string.IsNullOrEmpty(str) ? "" : (" " + str)));
}
finally
{
if ((authentication != null) && (newContext != authentication))
{
authentication.CloseContext();
}
}
}
if ((authenticationScheme & System.Net.AuthenticationSchemes.Basic) != System.Net.AuthenticationSchemes.None)
{
AddChallenge(ref challenges, "Basic realm=\"" + this.Realm + "\"");
}
return challenges;
}
private ArrayList BuildChallenge(AuthenticationSchemes authenticationScheme, ulong connectionId,
out NTAuthentication newContext, ExtendedProtectionPolicy policy, bool isSecureConnection)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::BuildChallenge() authenticationScheme:" + authenticationScheme.ToString());
ArrayList challenges = null;
newContext = null;
if ((authenticationScheme & AuthenticationSchemes.Negotiate) != 0)
{
AddChallenge(ref challenges, NegotiateClient.AuthType);
}
if ((authenticationScheme & AuthenticationSchemes.Ntlm) != 0)
{
AddChallenge(ref challenges, NtlmClient.AuthType);
}
if ((authenticationScheme & AuthenticationSchemes.Digest) != 0)
{
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::BuildChallenge() package:WDigest");
NTAuthentication context = null;
try
{
string outBlob = null;
ChannelBinding binding = GetChannelBinding(connectionId, isSecureConnection, policy);
context = new NTAuthentication(true, NegotiationInfoClass.WDigest, null,
GetContextFlags(policy, isSecureConnection), binding);
SecurityStatus statusCode;
outBlob = context.GetOutgoingDigestBlob(null, null, null, Realm, false, false, out statusCode);
GlobalLog.Print("HttpListener#" + ValidationHelper.HashString(this) + "::BuildChallenge() GetOutgoingDigestBlob() returned IsCompleted:" + context.IsCompleted + " statusCode:" + statusCode + " outBlob:[" + outBlob + "]");
if (context.IsValidContext)
{
newContext = context;
}
AddChallenge(ref challenges, DigestClient.AuthType + (string.IsNullOrEmpty(outBlob) ? "" : " " + outBlob));
}
finally
{
if (context != null && newContext != context)
{
context.CloseContext();
}
}
}
if ((authenticationScheme & AuthenticationSchemes.Basic) != 0)
{
AddChallenge(ref challenges, BasicClient.AuthType + " realm=\"" + Realm + "\"");
}
return challenges;
}
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();
}
}
}
}
public static bool Update(string challenge, WebRequest webRequest)
{
GlobalLog.Print("XPDigestClient::Update(): " + challenge);
HttpWebRequest httpWebRequest = webRequest as HttpWebRequest;
GlobalLog.Assert(httpWebRequest != null, "XPDigestClient::Update() httpWebRequest==null", "");
if (httpWebRequest == null || httpWebRequest.ChallengedUri == null)
{
//
// there has been no challenge:
// 1) the request never went on the wire
// 2) somebody other than us is calling into AuthenticationManager
//
GlobalLog.Print("XPDigestClient::Update(): no request. returning true");
return(true);
}
NTAuthentication authSession = sessions[httpWebRequest.CurrentAuthenticationState] as NTAuthentication;
GlobalLog.Print("XPDigestClient::Update() key:" + ValidationHelper.HashString(httpWebRequest.CurrentAuthenticationState) + " retrieved authSession:" + ValidationHelper.HashString(authSession));
if (authSession == null)
{
return(false);
}
int index = challenge == null ? -1 : AuthenticationManager.FindSubstringNotInQuotes(challenge.ToLower(CultureInfo.InvariantCulture), DigestClient.Signature);
if (index < 0)
{
GlobalLog.Print("XPDigestClient::Update(): no challenge. returning true");
return(true);
}
// here's how we know if the handshake is complete when we get the response back,
// (keeping in mind that we need to support stale credentials):
// !40X - complete & success
// 40X & stale=false - complete & failure
// 40X & stale=true - !complete
if (httpWebRequest.ResponseStatusCode != httpWebRequest.CurrentAuthenticationState.StatusCodeMatch)
{
GlobalLog.Print("XPDigestClient::Update() removing authSession:" + ValidationHelper.HashString(authSession) + " from:" + ValidationHelper.HashString(httpWebRequest.CurrentAuthenticationState));
sessions.Remove(httpWebRequest.CurrentAuthenticationState);
GlobalLog.Print("XPDigestClient::Update(): no status code match. returning true");
return(true);
}
int blobBegin = index + DigestClient.SignatureSize;
string incoming = null;
//
// there may be multiple challenges. If the next character after the
// package name is not a comma then it is challenge data
//
if (challenge.Length > blobBegin && challenge[blobBegin] != ',')
{
++blobBegin;
}
else
{
index = -1;
}
if (index >= 0 && challenge.Length > blobBegin)
{
incoming = challenge.Substring(blobBegin);
}
// we should get here only on invalid or stale credentials:
bool handshakeComplete;
string clientResponse = authSession.GetOutgoingDigestBlob(incoming, httpWebRequest.CurrentMethod, out handshakeComplete);
GlobalLog.Print("XPDigestClient::Update() GetOutgoingDigestBlob(" + incoming + ") returns:" + ValidationHelper.ToString(clientResponse));
GlobalLog.Assert(handshakeComplete, "XPDigestClient::Update() handshakeComplete==false", "");
GlobalLog.Print("XPDigestClient::Update() GetOutgoingBlob() returns clientResponse:[" + ValidationHelper.ToString(clientResponse) + "] handshakeComplete:" + handshakeComplete.ToString());
return(handshakeComplete);
}
