SocketPermission.IsUnrestricted Method
Definition
Important
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Checks the overall permission state of the object.
public:
virtual bool IsUnrestricted();public bool IsUnrestricted ();abstract member IsUnrestricted : unit -> bool
override this.IsUnrestricted : unit -> boolPublic Function IsUnrestricted () As BooleanReturns
true if the SocketPermission instance is created with the Unrestricted value from PermissionState; otherwise, false.
Implements
Examples
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()
Applies to
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