SocketPermission.IsUnrestricted SocketPermission.IsUnrestricted SocketPermission.IsUnrestricted SocketPermission.IsUnrestricted Method

Definition

Überprüft den allgemeinen Berechtigungszustand des Objekts.Checks the overall permission state of the object.

public:
 virtual bool IsUnrestricted();
public bool IsUnrestricted ();
override this.IsUnrestricted : unit -> bool
Public Function IsUnrestricted () As Boolean

Gibt zurück

true, wenn die SocketPermission-Instanz mit dem Unrestricted-Wert von PermissionState erstellt wird, andernfalls false.true if the SocketPermission instance is created with the Unrestricted value from PermissionState; otherwise, false.

Implementiert

Beispiele

Das folgende Beispiel überprüft die IsUnrestricted Eigenschaft, um zu bestimmen, ob das angegebene SocketPermission gelten Einschränkungen.The following example checks the IsUnrestricted property to determine if the specified SocketPermission has any restrictions.

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()

Gilt für: