SocketPermission.ToXml Método

Definición

Espacio de nombres:

System.Net

Ensamblado:

System.Security.Permissions.dll

Paquete:

System.Security.Permissions v8.0.0

Source:

SocketPermission.cs

Crea una codificación XML de una instancia de SocketPermission y su estado actual.

public:
 override System::Security::SecurityElement ^ ToXml();

public override System.Security.SecurityElement ToXml ();

override this.ToXml : unit -> System.Security.SecurityElement

Public Overrides Function ToXml () As SecurityElement

Devoluciones

SecurityElement

Una instancia de SecurityElement que contiene una representación en código XML de la instancia de SocketPermission, incluida la información de estado.

Ejemplos

En el ejemplo siguiente se usa el ToXml método para convertir a SocketPermission XML.

SocketPermission^ socketPermission1 = gcnew SocketPermission( PermissionState::Unrestricted );

// Create a 'SocketPermission' Object* for two ip addresses.
SocketPermission^ socketPermission2 = gcnew SocketPermission( PermissionState::None );
SecurityElement^ securityElement4 = socketPermission2->ToXml();

// 'SocketPermission' Object* for 'Connect' permission
SecurityElement^ securityElement1 = gcnew SecurityElement( "ConnectAccess" );

// Format to specify ip address are <ip-address>#<port>#<transport-type>
// First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
SecurityElement^ securityElement2 = gcnew SecurityElement( "URI","192.168.144.238#-1#3" );

// Second 'SocketPermission' ip-address is '192.168.144.240' for 'All' transport types and for 'All' ports for the ip-address.
SecurityElement^ securityElement3 = gcnew SecurityElement( "URI","192.168.144.240#-1#3" );
securityElement1->AddChild( securityElement2 );
securityElement1->AddChild( securityElement3 );
securityElement4->AddChild( securityElement1 );

// Obtain a 'SocketPermission' Object* using 'FromXml' method.
socketPermission2->FromXml( securityElement4 );

// Create another 'SocketPermission' Object* with two ip addresses.
// First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
SocketPermission^ socketPermission3 = gcnew SocketPermission( NetworkAccess::Connect,TransportType::All,"192.168.144.238",SocketPermission::AllPorts );

// Second 'SocketPermission' ip-address is '192.168.144.239' for 'All' transport types and for 'All' ports for the ip-address.
socketPermission3->AddPermission( NetworkAccess::Connect, TransportType::All, "192.168.144.239", SocketPermission::AllPorts );
Console::WriteLine( "\nChecks the Socket permissions using IsUnrestricted method : " );
if ( socketPermission1->IsUnrestricted() )
      Console::WriteLine( "Socket permission is unrestricted" );
else
      Console::WriteLine( "Socket permission is restricted" );

Console::WriteLine();
Console::WriteLine( "Display result of ConnectList property : \n" );
IEnumerator^ enumerator = socketPermission3->ConnectList;
while ( enumerator->MoveNext() )
{
   Console::WriteLine( "The hostname is       : {0}", dynamic_cast<EndpointPermission^>(enumerator->Current)->Hostname );
   Console::WriteLine( "The port is           : {0}", dynamic_cast<EndpointPermission^>(enumerator->Current)->Port );
   Console::WriteLine( "The Transport type is : {0}", dynamic_cast<EndpointPermission^>(enumerator->Current)->Transport );
}

Console::WriteLine( "" );
Console::WriteLine( "Display Security Elements :\n " );
PrintSecurityElement( socketPermission2->ToXml(), 0 );

// Get a 'SocketPermission' Object* which is a union of two other 'SocketPermission' objects.
socketPermission1 = dynamic_cast<SocketPermission^>(socketPermission3->Union( socketPermission2 ));

// Demand that the calling method have the socket permission.
socketPermission1->Demand();

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Collections;
using System.Security;
using System.Security.Permissions;

public class DateClient {

    private Socket serverSocket;
    private Encoding asciiEncoding;
    private IPAddress serverAddress;

    private int serverPort;

    // The constructor takes the address and port of the remote server.
    public DateClient(IPAddress serverIpAddress, int port) {
        serverAddress = serverIpAddress;
        serverPort = port;
        serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        asciiEncoding = Encoding.ASCII;
    }

    // Print a security element and all its children, in a depth-first manner.
    private void PrintSecurityElement(SecurityElement securityElementObj, int depth) {

        Console.WriteLine("Depth    : {0}", depth);
        Console.WriteLine("Tag      : {0}", securityElementObj.Tag);
        Console.WriteLine("Text     : {0}", securityElementObj.Text);
        if(securityElementObj.Children != null)
            Console.WriteLine("Children : {0}", securityElementObj.Children.Count);

        if(securityElementObj.Attributes != null) {
            IEnumerator attributeEnumerator = securityElementObj.Attributes.GetEnumerator();
            while(attributeEnumerator.MoveNext())
            Console.WriteLine("Attribute - \"{0}\" , Value - \"{1}\"", ((IDictionaryEnumerator)attributeEnumerator).Key,
                                                                    ((IDictionaryEnumerator)attributeEnumerator).Value);
        }

        Console.WriteLine("");

        if(securityElementObj.Children != null) {
            depth += 1;
            for(int i = 0; i < securityElementObj.Children.Count; i++)
                PrintSecurityElement((SecurityElement)(securityElementObj.Children[i]), depth);
        }
    }

    public String GetDate()
    {

        SocketPermission socketPermission1 = new SocketPermission(PermissionState.Unrestricted);

        // Create a 'SocketPermission' object for two ip addresses.
        SocketPermission socketPermission2 = new SocketPermission(PermissionState.None);
        SecurityElement securityElement4 = socketPermission2.ToXml();
      // 'SocketPermission' object for 'Connect' permission
        SecurityElement securityElement1 = new SecurityElement("ConnectAccess");
      // Format to specify ip address are <ip-address>#<port>#<transport-type>
        // First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
        SecurityElement securityElement2 = new SecurityElement("URI", "192.168.144.238#-1#3");
      // Second 'SocketPermission' ip-address is '192.168.144.240' for 'All' transport types and for 'All' ports for the ip-address.
        SecurityElement securityElement3 = new SecurityElement("URI", "192.168.144.240#-1#3");
        securityElement1.AddChild(securityElement2);
        securityElement1.AddChild(securityElement3);
        securityElement4.AddChild(securityElement1);
        
       // Obtain a 'SocketPermission' object using 'FromXml' method.	
        socketPermission2.FromXml(securityElement4);

        // Create another 'SocketPermission' object with two ip addresses.
      // First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
        SocketPermission socketPermission3 =
                        new SocketPermission(NetworkAccess.Connect,
                                             TransportType.All,
                                             "192.168.144.238",
                                             SocketPermission.AllPorts);

      // Second 'SocketPermission' ip-address is '192.168.144.239' for 'All' transport types and for 'All' ports for the ip-address.
        socketPermission3.AddPermission(NetworkAccess.Connect,
                                       TransportType.All,
                                       "192.168.144.239",
                                       SocketPermission.AllPorts);

        Console.WriteLine("\nChecks the Socket permissions using IsUnrestricted method : ");
        if(socketPermission1.IsUnrestricted())
            Console.WriteLine("Socket permission is unrestricted");
        else
            Console.WriteLine("Socket permission is restricted");

        Console.WriteLine();

        Console.WriteLine("Display result of ConnectList property : \n");
        IEnumerator enumerator = socketPermission3.ConnectList;
        while(enumerator.MoveNext()) {
            Console.WriteLine("The hostname is       : {0}", ((EndpointPermission)enumerator.Current).Hostname);
            Console.WriteLine("The port is           : {0}", ((EndpointPermission)enumerator.Current).Port);
            Console.WriteLine("The Transport type is : {0}", ((EndpointPermission)enumerator.Current).Transport);
        }
        Console.WriteLine("");

        Console.WriteLine("Display Security Elements :\n ");
        PrintSecurityElement(socketPermission2.ToXml(), 0);

        // Get a 'SocketPermission' object which is a union of two other 'SocketPermission' objects.
        socketPermission1 = (SocketPermission)socketPermission3.Union(socketPermission2);

        // Demand that the calling method have the socket permission.
        socketPermission1.Demand();

        // Get the current date from the remote date server.
        try {
            int bytesReceived;		
            byte[] getByte = new byte[100];
            serverSocket.Connect(new IPEndPoint( serverAddress, serverPort));
            bytesReceived = serverSocket.Receive( getByte, getByte.Length, 0 );
            return asciiEncoding.GetString( getByte, 0, bytesReceived );
        }
        catch(Exception e)
        {
            Console.WriteLine("\nException raised : {0}", e.Message);
            return "";
        }
    }
};

Dim socketPermission1 As New SocketPermission(PermissionState.Unrestricted)

    'Create a 'SocketPermission' object for two ip addresses.
    Dim socketPermission2 As New SocketPermission(PermissionState.None)
    Dim securityElement4 As SecurityElement = socketPermission2.ToXml()
    ''SocketPermission' object for 'Connect' permission
    Dim securityElement1 As New SecurityElement("ConnectAccess")
    'Format to specify ip address are <ip-address>#<port>#<transport-type>
    'First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
    Dim securityElement2 As New SecurityElement("URI", "192.168.144.238#-1#3")
    'Second 'SocketPermission' ip-address is '192.168.144.240' for 'All' transport types and for 'All' ports for the ip-address.
    Dim securityElement3 As New SecurityElement("URI", "192.168.144.240#-1#3")
    securityElement1.AddChild(securityElement2)
    securityElement1.AddChild(securityElement3)
    securityElement4.AddChild(securityElement1)
    
    'Obtain a 'SocketPermission' object using 'FromXml' method.	
    socketPermission2.FromXml(securityElement4)
    
    'Create another 'SocketPermission' object with two ip addresses.
    'First 'SocketPermission' ip-address is '192.168.144.238' for 'All' transport types and for 'All' ports for the ip-address.
    Dim socketPermission3 As New SocketPermission(NetworkAccess.Connect, TransportType.All, "192.168.144.238", SocketPermission.AllPorts)
    
    'Second 'SocketPermission' ip-address is '192.168.144.239' for 'All' transport types and for 'All' ports for the ip-address.
    socketPermission3.AddPermission(NetworkAccess.Connect, TransportType.All, "192.168.144.239", SocketPermission.AllPorts)

    Console.WriteLine(ControlChars.Cr + "Checks the Socket permissions using IsUnrestricted method : ")
    If socketPermission1.IsUnrestricted() Then
        Console.WriteLine("Socket permission is unrestricted")
    Else
        Console.WriteLine("Socket permission is restricted")
    End If 
    Console.WriteLine()
    
    Console.WriteLine("Display result of ConnectList property : " + ControlChars.Cr)
    Dim enumerator As IEnumerator = socketPermission3.ConnectList
    While enumerator.MoveNext()
        Console.WriteLine("The hostname is       : {0}", CType(enumerator.Current, EndpointPermission).Hostname)
        Console.WriteLine("The port is           : {0}", CType(enumerator.Current, EndpointPermission).Port)
        Console.WriteLine("The Transport type is : {0}", CType(enumerator.Current, EndpointPermission).Transport)
    End While
    
    Console.WriteLine("")
    
    Console.WriteLine("Display Security Elements :" + ControlChars.Cr + " ")
    PrintSecurityElement(socketPermission2.ToXml(), 0)
    
    'Get a 'SocketPermission' object which is a union of two other 'SocketPermission' objects.
    socketPermission1 = CType(socketPermission3.Union(socketPermission2), SocketPermission)
    
    'Demand that the calling method have the socket permission.
    socketPermission1.Demand()

Comentarios

El ToXml método crea una SecurityElement instancia para codificar una representación de la instancia, incluida la SocketPermission información de estado, en XML.

Use el FromXml método para restaurar la información de estado de una SecurityElement instancia de .