Authorization-Konstruktor (String)

Erstellt eine neue Instanz der Authorization-Klasse mit der angegebenen Autorisierungsmeldung.

Namespace: System.Net
Assembly: System (in system.dll)

Syntax

'Declaration
Public Sub New ( _
    token As String _
)
'Usage
Dim token As String

Dim instance As New Authorization(token)

public Authorization (
    string token
)

public:
Authorization (
    String^ token
)

public Authorization (
    String token
)

public function Authorization (
    token : String
)

Parameter

• token
  Die vom Server erwartete verschlüsselte Autorisierungsmeldung.

Hinweise

Beim Erstellen der Authorization-Instanz wird die Message-Eigenschaft auf token und die Complete-Eigenschaft auf true festgelegt.

Beispiel

Im folgenden Codebeispiel wird das Erstellen eines Authorization-Objekts veranschaulicht. Ein vollständiges Beispiel finden Sie unter der AuthenticationManager-Klasse.

  ' 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 'CustomBasic 

// 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 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.get_ASCII();

    // Get the username and password from the credentials
    NetworkCredential myCreds = credentials.GetCredential(
                                request.get_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.
    boolean challengeOk = CheckChallenge(challenge, myCreds.get_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.get_UserName() + ":" 
        + myCreds.get_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.get_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}", 
        System.Convert.ToString(resourceAuthorization.get_Complete()));

    Console.WriteLine("\n Authorization ConnectionGroupId:{0}", 
        resourceAuthorization.get_ConnectionGroupId());
    return resourceAuthorization;
} //Authenticate

Plattformen

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

.NET Compact Framework

Unterstützt in: 2.0, 1.0

Siehe auch

Referenz

Authorization-Klasse
Authorization-Member
System.Net-Namespace