IAuthenticationModule.Authenticate(String, WebRequest, ICredentials) Метод
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Возвращает экземпляр класса Authorization в ответ на запрос проверки подлинности, посылаемый с сервера.
public:
System::Net::Authorization ^ Authenticate(System::String ^ challenge, System::Net::WebRequest ^ request, System::Net::ICredentials ^ credentials);
public System.Net.Authorization? Authenticate (string challenge, System.Net.WebRequest request, System.Net.ICredentials credentials);
public System.Net.Authorization Authenticate (string challenge, System.Net.WebRequest request, System.Net.ICredentials credentials);
abstract member Authenticate : string * System.Net.WebRequest * System.Net.ICredentials -> System.Net.Authorization
Public Function Authenticate (challenge As String, request As WebRequest, credentials As ICredentials) As Authorization
- challenge
- String
Запрос проверки подлинности, посылаемый сервером.
- request
- WebRequest
Экземпляр класса WebRequest, связанный с запросом.
- credentials
- ICredentials
Учетные данные, связанные с запросом.
Экземпляр класса Authorization, содержащий сообщение авторизации для запроса или null
, если запрос не может быть обработан.
В следующем примере показано, как использовать метод Authenticate. Полный пример см. в AuthenticationManager разделе класс .
// Authenticate is the core method for this custom authentication.
// When an internet resource requests authentication, the WebRequest::GetResponse
// method calls the AuthenticationManager::Authenticate method. This method, in
// turn, calls the Authenticate method on each of the registered authentication
// modules, in the order they were registered. When the authentication is
// complete an Authorization object is returned to the WebRequest, as
// shown by this routine's retun type.
virtual Authorization^ Authenticate( String^ challenge, WebRequest^ request, ICredentials^ credentials )
{
Encoding^ ASCII = Encoding::ASCII;
// Get the username and password from the credentials
NetworkCredential^ MyCreds = credentials->GetCredential( request->RequestUri, "Basic" );
if ( PreAuthenticate( request, credentials ) == nullptr )
Console::WriteLine( "\n Pre-authentication is not allowed." );
else
Console::WriteLine( "\n Pre-authentication is allowed." );
// Verify that the challenge satisfies the authorization requirements.
bool challengeOk = checkChallenge( challenge, MyCreds->Domain );
if ( !challengeOk )
return nullptr;
// Create the encrypted string according to the Basic authentication format as
// follows:
// a)Concatenate username and password separated by colon;
// b)Apply ASCII encoding to obtain a stream of bytes;
// c)Apply Base64 Encoding to this array of bytes to obtain the encoded
// authorization.
String^ BasicEncrypt = String::Concat( MyCreds->UserName, ":", MyCreds->Password );
String^ BasicToken = String::Concat( "Basic ", Convert::ToBase64String( ASCII->GetBytes( BasicEncrypt ) ) );
// Create an Authorization object using the above encoded authorization.
Authorization^ resourceAuthorization = gcnew Authorization( BasicToken );
// Get the Message property which contains the authorization string that the
// client returns to the server when accessing protected resources
Console::WriteLine( "\n Authorization Message: {0}", resourceAuthorization->Message );
// Get the Complete property which is set to true when the authentication process
// between the client and the server is finished.
Console::WriteLine( "\n Authorization Complete: {0}", resourceAuthorization->Complete );
Console::WriteLine( "\n Authorization ConnectionGroupId: {0}", resourceAuthorization->ConnectionGroupId );
return resourceAuthorization;
}
// Authenticate is the core method for this custom authentication.
// When an Internet resource requests authentication, the WebRequest.GetResponse
// method calls the AuthenticationManager.Authenticate method. This method, in
// turn, calls the Authenticate method on each of the registered authentication
// modules, in the order in which they were registered. When the authentication is
// complete an Authorization object is returned to the WebRequest.
public Authorization Authenticate(String challenge, WebRequest request, ICredentials credentials)
{
Encoding ASCII = Encoding.ASCII;
// Get the username and password from the credentials
NetworkCredential myCreds = credentials.GetCredential(request.RequestUri, "Basic");
if (PreAuthenticate(request, credentials) == null)
Console.WriteLine("\n Pre-authentication is not allowed.");
else
Console.WriteLine("\n Pre-authentication is allowed.");
// Verify that the challenge satisfies the authorization requirements.
bool challengeOk = CheckChallenge(challenge, myCreds.Domain);
if (!challengeOk)
return null;
// Create the encrypted string according to the Basic authentication format as
// follows:
// a)Concatenate the username and password separated by colon;
// b)Apply ASCII encoding to obtain a stream of bytes;
// c)Apply Base64 encoding to this array of bytes to obtain the encoded
// authorization.
string basicEncrypt = myCreds.UserName + ":" + myCreds.Password;
string basicToken = "Basic " + Convert.ToBase64String(ASCII.GetBytes(basicEncrypt));
// Create an Authorization object using the encoded authorization above.
Authorization resourceAuthorization = new Authorization(basicToken);
// Get the Message property, which contains the authorization string that the
// client returns to the server when accessing protected resources.
Console.WriteLine("\n Authorization Message:{0}",resourceAuthorization.Message);
// Get the Complete property, which is set to true when the authentication process
// between the client and the server is finished.
Console.WriteLine("\n Authorization Complete:{0}",resourceAuthorization.Complete);
Console.WriteLine("\n Authorization ConnectionGroupId:{0}",resourceAuthorization.ConnectionGroupId);
return resourceAuthorization;
}
' Authenticate is the core method for this custom authentication.
' When an Internet resource requests authentication, the WebRequest.GetResponse
' method calls the AuthenticationManager.Authenticate method. This method, in
' turn, calls the Authenticate method on each of the registered authentication
' modules, in the order in which they were registered. When the authentication is
' complete an Authorization object is returned to the WebRequest.
Public Function Authenticate(ByVal challenge As String, ByVal request As WebRequest, ByVal credentials As ICredentials) As Authorization _
Implements IAuthenticationModule.Authenticate
Dim ASCII As Encoding = Encoding.ASCII
' Get the username and password from the credentials
Dim MyCreds As NetworkCredential = credentials.GetCredential(request.RequestUri, "Basic")
If PreAuthenticate(request, credentials) Is Nothing Then
Console.WriteLine(ControlChars.Lf + " Pre-authentication is not allowed.")
Else
Console.WriteLine(ControlChars.Lf + " Pre-authentication is allowed.")
End If
' Verify that the challenge satisfies the authorization requirements.
Dim challengeOk As Boolean = checkChallenge(challenge, MyCreds.Domain)
If Not challengeOk Then
Return Nothing
End If
' Create the encrypted string according to the Basic authentication format as
' follows:
' a)Concatenate the username and password separated by colon;
' b)Apply ASCII encoding to obtain a stream of bytes;
' c)Apply Base64 encoding to this array of bytes to obtain the encoded
' authorization.
Dim BasicEncrypt As String = MyCreds.UserName + ":" + MyCreds.Password
Dim BasicToken As String = "Basic " + Convert.ToBase64String(ASCII.GetBytes(BasicEncrypt))
' Create an Authorization object using the encoded authorization above.
Dim resourceAuthorization As New Authorization(BasicToken)
' Get the Message property, which contains the authorization string that the
' client returns to the server when accessing protected resources.
Console.WriteLine(ControlChars.Lf + " Authorization Message:{0}", resourceAuthorization.Message)
' Get the Complete property, which is set to true when the authentication process
' between the client and the server is finished.
Console.WriteLine(ControlChars.Lf + " Authorization Complete:{0}", resourceAuthorization.Complete)
Console.WriteLine(ControlChars.Lf + " Authorization ConnectionGroupId:{0}", resourceAuthorization.ConnectionGroupId)
Return resourceAuthorization
End Function 'Authenticate
End Class
Метод Authenticate выполняет процесс проверки подлинности на сервере и возвращает Authorization экземпляр в AuthenticationManager.
Вызывает AuthenticationManagerAuthenticate(String, WebRequest, ICredentials) метод для зарегистрированных модулей проверки подлинности, чтобы определить, какой модуль обрабатывает запрос. Если модуль проверки подлинности не может обработать запрос, Authenticate(String, WebRequest, ICredentials) метод должен возвращать null
. Если модуль проверки подлинности обнаруживает ошибку при выполнении процесса проверки подлинности, Authenticate(String, WebRequest, ICredentials) необходимо вызвать исключение.
Продукт | Версии |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
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