Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / _BasicClient.cs / 1305376 / _BasicClient.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net { using System.Text; using System.Globalization; using System.Security.Permissions; internal class BasicClient : IAuthenticationModule { internal const string AuthType = "Basic"; internal static string Signature = AuthType.ToLower(CultureInfo.InvariantCulture); internal static int SignatureSize = Signature.Length; public Authorization Authenticate(string challenge, WebRequest webRequest, ICredentials credentials) { GlobalLog.Print("BasicClient::Authenticate(): " + challenge); GlobalLog.Assert(credentials != null, "BasicClient::Authenticate()|credentials == null"); #if !FEATURE_PAL if (credentials==null || credentials is SystemNetworkCredential) { #else if (credentials==null) { #endif // !FEATURE_PAL return null; } HttpWebRequest httpWebRequest = webRequest as HttpWebRequest; GlobalLog.Assert(httpWebRequest != null, "BasicClient::Authenticate()|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 // return null; } int index = AuthenticationManager.FindSubstringNotInQuotes(challenge, Signature); if (index < 0) { return null; } return Lookup(httpWebRequest, credentials); } public bool CanPreAuthenticate { get { return true; } } public Authorization PreAuthenticate(WebRequest webRequest, ICredentials credentials) { GlobalLog.Print("BasicClient::PreAuthenticate()"); GlobalLog.Assert(credentials != null, "BasicClient::Authenticate()|credentials == null"); #if !FEATURE_PAL if (credentials==null || credentials is SystemNetworkCredential) { #else if (credentials==null) { #endif // !FEATURE_PAL return null; } HttpWebRequest httpWebRequest = webRequest as HttpWebRequest; GlobalLog.Assert(httpWebRequest != null, "BasicClient::Authenticate()|httpWebRequest == null"); if (httpWebRequest==null) { return null; } return Lookup(httpWebRequest, credentials); } public string AuthenticationType { get { return AuthType; } } private Authorization Lookup(HttpWebRequest httpWebRequest, ICredentials credentials) { GlobalLog.Print("BasicClient::Lookup(): ChallengedUri:" + httpWebRequest.ChallengedUri.ToString()); NetworkCredential NC = credentials.GetCredential(httpWebRequest.ChallengedUri, Signature); GlobalLog.Print("BasicClient::Lookup() GetCredential() returns:" + ValidationHelper.ToString(NC)); if (NC==null) { return null; } ICredentialPolicy policy = AuthenticationManager.CredentialPolicy; if (policy != null && !policy.ShouldSendCredential(httpWebRequest.ChallengedUri, httpWebRequest, NC, this)) return null; string username = NC.InternalGetUserName(); string domain = NC.InternalGetDomain(); if (ValidationHelper.IsBlankString(username)) { return null; } string rawString = ((!ValidationHelper.IsBlankString(domain)) ? (domain + "\\") : "") + username + ":" + NC.InternalGetPassword(); // The response is an "Authorization:" header where the value is // the text "Basic" followed by BASE64 encoded (as defined by RFC1341) value byte[] bytes = EncodingRightGetBytes(rawString); string responseHeader = BasicClient.AuthType + " " + Convert.ToBase64String(bytes); return new Authorization(responseHeader, true); } internal static byte[] EncodingRightGetBytes(string rawString) { GlobalLog.Enter("BasicClient::EncodingRightGetBytes", "[" + rawString.Length.ToString() + ":" + rawString + "]"); // // in order to know if there will not be any '?' translations (which means // we should use the Default Encoding) we need to attempt encoding and then decoding. //this is a limitation only on win9x, if we ever drop support for this platform there might be // a more efficient way of doing this. // GlobalLog.Print("BasicClient::EncodingRightGetBytes(): Default Encoding is:" + Encoding.Default.EncodingName); byte[] bytes = Encoding.Default.GetBytes(rawString); string rawCopy = Encoding.Default.GetString(bytes); bool canMapToCurrentCodePage = string.Compare(rawString, rawCopy, StringComparison.Ordinal)==0; GlobalLog.Print("BasicClient::EncodingRightGetBytes(): canMapToCurrentCodePage:" + canMapToCurrentCodePage.ToString()); //// if mapping to the current code page leaves characters out of the // [0x00, 0xFF] range, then we need to use the new encoding that IIS6.0 // will support. do it when they decide it's good enough. // if (!canMapToCurrentCodePage) { //// for now throw. when IIS 6.0 adds support test it. // GlobalLog.LeaveException("BasicClient::EncodingRightGetBytes", ExceptionHelper.MethodNotSupportedException); throw ExceptionHelper.MethodNotSupportedException; /* GlobalLog.Print("BasicClient::EncodingRightGetBytes(): using:" + Encoding.UTF8.EncodingName); bytes = Encoding.UTF8.GetBytes(rawString); string blob = "=?utf-8?B?" + Convert.ToBase64String(bytes) + "?="; bytes = Encoding.ASCII.GetBytes(blob); */ } GlobalLog.Dump(bytes); GlobalLog.Leave("BasicClient::EncodingRightGetBytes", bytes.Length.ToString()); return bytes; } }; // class BasicClient } // namespace System.Net // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DirectoryObjectSecurity.cs
- SymmetricAlgorithm.cs
- HierarchicalDataBoundControlAdapter.cs
- WebPageTraceListener.cs
- AssociatedControlConverter.cs
- HotCommands.cs
- XPathEmptyIterator.cs
- LocalizableAttribute.cs
- EncodingInfo.cs
- IntegerFacetDescriptionElement.cs
- RequestContext.cs
- Int64AnimationBase.cs
- LoaderAllocator.cs
- AndCondition.cs
- ProjectionRewriter.cs
- ClientReliableChannelBinder.cs
- IdleTimeoutMonitor.cs
- SQLInt16Storage.cs
- HandledMouseEvent.cs
- TextServicesProperty.cs
- WebPartConnectionsConnectVerb.cs
- Point3D.cs
- PeerCollaboration.cs
- PassportAuthentication.cs
- FileSecurity.cs
- ImageList.cs
- Label.cs
- InteropBitmapSource.cs
- MetafileHeaderWmf.cs
- ReturnEventArgs.cs
- InvalidPrinterException.cs
- ToolStripButton.cs
- AppliedDeviceFiltersDialog.cs
- CodeDomSerializerBase.cs
- ParentUndoUnit.cs
- XmlCharCheckingWriter.cs
- DataGridPageChangedEventArgs.cs
- TemplateBaseAction.cs
- SqlStatistics.cs
- PeerToPeerException.cs
- DBConnectionString.cs
- ConfigurationSection.cs
- CLSCompliantAttribute.cs
- SingleAnimation.cs
- HttpResponse.cs
- HtmlInputButton.cs
- LookupBindingPropertiesAttribute.cs
- _HTTPDateParse.cs
- SqlLiftWhereClauses.cs
- MsmqProcessProtocolHandler.cs
- UnsafeNativeMethods.cs
- RuntimeCompatibilityAttribute.cs
- SineEase.cs
- QueryTaskGroupState.cs
- EventBuilder.cs
- AggregatePushdown.cs
- ByteStack.cs
- AmbiguousMatchException.cs
- DoubleIndependentAnimationStorage.cs
- TextServicesContext.cs
- SingleConverter.cs
- WinEventQueueItem.cs
- ToolstripProfessionalRenderer.cs
- HebrewNumber.cs
- HttpInputStream.cs
- EditingCommands.cs
- DocumentGridContextMenu.cs
- CustomErrorCollection.cs
- ConnectionManagementElementCollection.cs
- DataGridViewCellMouseEventArgs.cs
- EndpointBehaviorElement.cs
- StorageEntityContainerMapping.cs
- SqlDataSourceFilteringEventArgs.cs
- AdPostCacheSubstitution.cs
- UserControlAutomationPeer.cs
- SymDocumentType.cs
- XsdDateTime.cs
- Transform.cs
- RequiredFieldValidator.cs
- TypeSource.cs
- TranslateTransform.cs
- ListViewInsertionMark.cs
- ToolTipService.cs
- Camera.cs
- DataListItemEventArgs.cs
- XamlToRtfWriter.cs
- ProcessThread.cs
- OperationContractAttribute.cs
- GenericRootAutomationPeer.cs
- Interlocked.cs
- FillBehavior.cs
- ListDictionaryInternal.cs
- NullableDecimalAverageAggregationOperator.cs
- StorageSetMapping.cs
- StorageMappingItemLoader.cs
- ClientBuildManagerTypeDescriptionProviderBridge.cs
- ContactManager.cs
- DesignerProperties.cs
- EditingCoordinator.cs
- RequestResizeEvent.cs