Authorization Costruttori

Definizione

Spazio dei nomi:

System.Net

Assembly:

System.Net.Requests.dll

Crea una nuova istanza della classe Authorization.

Overload

Authorization(String)	Crea una nuova istanza della classe Authorization con il messaggio di autorizzazione specificato.
Authorization(String, Boolean)	Crea una nuova istanza della classe Authorization con il messaggio di autorizzazione e lo stato di completamento specificati.
Authorization(String, Boolean, String)	Crea una nuova istanza della classe Authorization con il messaggio di autorizzazione, lo stato di completamento e l'identificatore del gruppo di connessione specificati.

Authorization(String)

Origine:

Authorization.cs

Crea una nuova istanza della classe Authorization con il messaggio di autorizzazione specificato.

public:
 Authorization(System::String ^ token);

public Authorization (string? token);

new System.Net.Authorization : string -> System.Net.Authorization

Public Sub New (token As String)

Parametri

token

String

Messaggio di autorizzazione crittografato atteso dal server.

Esempio

Nell'esempio di codice seguente viene illustrato come creare un Authorization oggetto. Per un esempio completo, fare riferimento alla AuthenticationManager classe .

// 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

Commenti

L'istanza Authorization viene creata con la Message proprietà impostata su token e la Complete proprietà impostata su true.

Authorization(String, Boolean)

Origine:

Authorization.cs

Crea una nuova istanza della classe Authorization con il messaggio di autorizzazione e lo stato di completamento specificati.

public:
 Authorization(System::String ^ token, bool finished);

public Authorization (string? token, bool finished);

new System.Net.Authorization : string * bool -> System.Net.Authorization

Public Sub New (token As String, finished As Boolean)

Parametri

token

String

Messaggio di autorizzazione crittografato atteso dal server.

finished

Boolean

Stato di completamento del tentativo di autorizzazione. true se il tentativo di autenticazione è completo. In caso contrario, false.

Esempio

Nell'esempio di codice seguente viene creata una nuova istanza della Authorization classe con il messaggio di autorizzazione e lo stato di completamento specificati.

virtual Authorization^ Authenticate( String^ challenge, WebRequest^ request, ICredentials^ credentials )
{
   try
   {
      String^ message;

      // Check if Challenge String* was raised by a site which requires 'CloneBasic' authentication.
      if ( (challenge == nullptr) || ( !challenge->StartsWith( "CloneBasic" )) )
               return nullptr;
      NetworkCredential^ myCredentials;
      if ( dynamic_cast<CredentialCache^>(credentials) == nullptr )
      {
         myCredentials = credentials->GetCredential( request->RequestUri, "CloneBasic" );
         if ( myCredentials == nullptr )
                     return nullptr;
      }
      else
               myCredentials = dynamic_cast<NetworkCredential^>(credentials);

      // Message encryption scheme :
      //   a)Concatenate username and password seperated by space;
      //   b)Apply ASCII encoding to obtain a stream of bytes;
      //   c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message.
      message = String::Concat( myCredentials->UserName, " ", myCredentials->Password );

      // Apply AsciiEncoding to 'message' String* to obtain it as an array of bytes.
      Encoding^ ascii = Encoding::ASCII;
      array<Byte>^byteArray = gcnew array<Byte>(ascii->GetByteCount( message ));
      byteArray = ascii->GetBytes( message );

      // Performing Base64 transformation.
      message = Convert::ToBase64String( byteArray );
      Authorization^ myAuthorization = gcnew Authorization( String::Concat( "CloneBasic ", message, true ) );
      array<String^>^protectionRealm = gcnew array<String^>(1);
      protectionRealm[ 0 ] = request->RequestUri->AbsolutePath;
      myAuthorization->ProtectionRealm = protectionRealm;
      return myAuthorization;
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "The following exception was raised in Authenticate method: {0}", e->Message );
      return nullptr;
   }
}

public Authorization Authenticate( string challenge,WebRequest request,ICredentials credentials)
{
    try
    {
        string message;
        // Check if Challenge string was raised by a site which requires 'CloneBasic' authentication.
        if ((challenge == null) || (!challenge.StartsWith("CloneBasic")))
            return null;
        NetworkCredential myCredentials;
        if (credentials is CredentialCache)
        {
            myCredentials = credentials.GetCredential(request.RequestUri,"CloneBasic");
            if (myCredentials == null)
                return null;
        }
        else
        {
            myCredentials = (NetworkCredential)credentials;
        }
        // Message encryption scheme :
        //   a)Concatenate username and password seperated by space;
        //   b)Apply ASCII encoding to obtain a stream of bytes;
        //   c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message.

        message = myCredentials.UserName + " " + myCredentials.Password;
        // Apply AsciiEncoding to 'message' string to obtain it as an array of bytes.
        Encoding ascii = Encoding.ASCII;
        byte[] byteArray = new byte[ascii.GetByteCount(message)];
        byteArray = ascii.GetBytes(message);

        // Performing Base64 transformation.
        message = Convert.ToBase64String(byteArray);
        Authorization myAuthorization = new Authorization("CloneBasic " + message,true);
        string[] protectionRealm = new string[]{request.RequestUri.AbsolutePath};
        myAuthorization.ProtectionRealm = protectionRealm;

        return myAuthorization;
    }
    catch(Exception e)
    {
        Console.WriteLine("The following exception was raised in Authenticate method:{0}",e.Message);
        return null;
    }
  }

Function Authenticate(ByVal challenge As String, ByVal request As WebRequest, ByVal credentials As ICredentials) As Authorization Implements IAuthenticationModule.Authenticate
    Try
        Dim message As String
        ' Check if Challenge string was raised by a site which requires 'CloneBasic' authentication.
        If challenge Is Nothing Or Not challenge.StartsWith("CloneBasic") Then
            Return Nothing
        End If
        Dim myCredentials As NetworkCredential
        If TypeOf credentials Is CredentialCache Then
            myCredentials = credentials.GetCredential(request.RequestUri, "CloneBasic")
            If myCredentials Is Nothing Then
                Return Nothing
            End If
        Else
            myCredentials = CType(credentials, NetworkCredential)
        End If
        ' Message encryption scheme : 
        ' a)Concatenate username and password seperated by space
        ' b)Apply ASCII encoding to obtain a stream of bytes
        ' c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message
        message = myCredentials.UserName + " " + myCredentials.Password
        ' Apply AsciiEncoding to 'message' string to obtain it as an array of bytes.
        Dim ascii As Encoding = Encoding.ASCII
        Dim byteArray(ascii.GetByteCount(message)) As Byte
        byteArray = ascii.GetBytes(message)

        ' Performing Base64 transformation.
        message = Convert.ToBase64String(byteArray)
        Dim myAuthorization As New Authorization("CloneBasic " + message, True)
        Dim protectionRealm() As String = {request.RequestUri.AbsolutePath}
        myAuthorization.ProtectionRealm = protectionRealm

        Return myAuthorization
    Catch e As Exception
        Console.WriteLine("The following exception was raised in Authenticate method:{0}", e.Message)
        Return Nothing
    End Try
End Function 'Authenticate

Commenti

L'istanza Authorization viene creata con la Message proprietà impostata su token e la Complete proprietà impostata su finished.

Authorization(String, Boolean, String)

Origine:

Authorization.cs

Crea una nuova istanza della classe Authorization con il messaggio di autorizzazione, lo stato di completamento e l'identificatore del gruppo di connessione specificati.

public:
 Authorization(System::String ^ token, bool finished, System::String ^ connectionGroupId);

public Authorization (string? token, bool finished, string? connectionGroupId);

new System.Net.Authorization : string * bool * string -> System.Net.Authorization

Public Sub New (token As String, finished As Boolean, connectionGroupId As String)

Parametri

token

String

Messaggio di autorizzazione crittografato atteso dal server.

finished

Boolean

Stato di completamento del tentativo di autorizzazione. true se il tentativo di autenticazione è completo. In caso contrario, false.

connectionGroupId

String

Identificatore univoco che può essere utilizzato per creare connessioni client-server private, che saranno associate solo a questo schema di autenticazione.

Esempio

Nell'esempio di codice seguente viene creata una nuova istanza della Authorization classe con il messaggio di autorizzazione, lo stato di completamento e l'identificatore del gruppo di connessione specificati.

virtual Authorization^ Authenticate( String^ challenge, WebRequest^ request, ICredentials^ credentials )
{
   try
   {
      String^ message;

      // Check if Challenge String* was raised by a site which requires CloneBasic authentication.
      if ( (challenge == nullptr) || ( !challenge->StartsWith( "CloneBasic" )) )
               return nullptr;
      NetworkCredential^ myCredentials;
      if ( dynamic_cast<CredentialCache^>(credentials) == nullptr )
      {
         myCredentials = credentials->GetCredential( request->RequestUri, "CloneBasic" );
         if ( myCredentials == nullptr )
                     return nullptr;
      }
      else
               myCredentials = dynamic_cast<NetworkCredential^>(credentials);

      // Message encryption scheme :
      // a)Concatenate username and password seperated by space;
      // b)Apply ASCII encoding to obtain a stream of bytes;
      // c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message.
      message = String::Concat( myCredentials->UserName, " ", myCredentials->Password );

      // Apply AsciiEncoding to our user name and password to obtain it as an array of bytes.
      Encoding^ asciiEncoding = Encoding::ASCII;
      array<Byte>^byteArray = gcnew array<Byte>(asciiEncoding->GetByteCount( message ));
      byteArray = asciiEncoding->GetBytes( message );

      // Perform Base64 transform.
      message = Convert::ToBase64String( byteArray );

      // The following overloaded contructor sets the 'Message' property of authorization to the base64 String*;
      // that  we just formed and it also sets the 'Complete' property to true and the connection group id;
      // to the domain of the NetworkCredential Object*.
      Authorization^ myAuthorization = gcnew Authorization( String::Concat( "CloneBasic ", message, true, request->ConnectionGroupName ) );
      return myAuthorization;
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception Raised ...: {0}", e->Message );
      return nullptr;
   }
}

public Authorization Authenticate( string challenge,WebRequest request,ICredentials credentials)
{
    try
    {
        string message;
        // Check if Challenge string was raised by a site which requires CloneBasic authentication.
        if ((challenge == null) || (!challenge.StartsWith("CloneBasic")))
            return null;
        NetworkCredential myCredentials;
        if (credentials is CredentialCache)
        {
            myCredentials = credentials.GetCredential(request.RequestUri,"CloneBasic");
            if (myCredentials == null)
                return null;
        }
        else
        {
            myCredentials = (NetworkCredential)credentials;
        }
        // Message encryption scheme :
        // a)Concatenate username and password seperated by space;
        // b)Apply ASCII encoding to obtain a stream of bytes;
        // c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message.

        message = myCredentials.UserName + " " + myCredentials.Password;
        // Apply AsciiEncoding to our user name and password to obtain it as an array of bytes.
        Encoding asciiEncoding = Encoding.ASCII;
        byte[] byteArray = new byte[asciiEncoding.GetByteCount(message)];
        byteArray = asciiEncoding.GetBytes(message);

        // Perform Base64 transform.
        message = Convert.ToBase64String(byteArray);
    // The following overloaded contructor sets the 'Message' property of authorization to the base64 string;
    // that  we just formed and it also sets the 'Complete' property to true and the connection group id;
    // to the domain of the NetworkCredential object.
        Authorization myAuthorization = new Authorization("CloneBasic " + message,true,request.ConnectionGroupName);
        return myAuthorization;
    }
    catch(Exception e)
    {
            Console.WriteLine("Exception Raised ...:"+e.Message);
        return null;
    }
  }

Public Function Authenticate(challenge As String, request As WebRequest, credentials As ICredentials) As Authorization Implements IAuthenticationModule.Authenticate
    Try
        Dim message As String
        ' Check if Challenge string was raised by a site which requires CloneBasic authentication.
        If challenge Is Nothing Or Not challenge.StartsWith("CloneBasic") Then
            Return Nothing
        End If
        Dim myCredentials As NetworkCredential
        If TypeOf credentials Is CredentialCache Then
            myCredentials = credentials.GetCredential(request.RequestUri, "CloneBasic")
            If myCredentials Is Nothing Then
                Return Nothing
            End If
        Else
            myCredentials = CType(credentials, NetworkCredential)
        End If 'Message encryption scheme : 
        '        a)Concatenate username and password seperated by space
        '        b)Apply ASCII encoding to obtain a stream of bytes
        '        c)Apply Base64 Encoding to this array of bytes to obtain our encoded authorization message

        message = myCredentials.UserName + " " + myCredentials.Password
        'Apply AsciiEncoding to our user name and password to obtain it as an array of bytes
        Dim asciiEncoding As Encoding = Encoding.ASCII
        Dim byteArray(asciiEncoding.GetByteCount(message)) As Byte
        byteArray = asciiEncoding.GetBytes(message)

        'Perform Base64 transform
        message = Convert.ToBase64String(byteArray)
        'The following overloaded contructor sets the 'Message' property of authorization to the base64 string
        '         *that  we just formed and it also sets the 'Complete' property to true and the connection group id
        '         *to the domain of the NetworkCredential object
        Dim myAuthorization As New Authorization("CloneBasic " + message, True, request.ConnectionGroupName)
        Return myAuthorization
    Catch e As Exception
        Console.WriteLine(("Exception Raised ...:" + e.Message))
        Return Nothing
    End Try
End Function 'Authenticate