SocketPermission.ToXml Metodo
Definizione
Importante
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Crea una codifica XML di un'istanza di SocketPermission e del relativo stato corrente.
public:
override System::Security::SecurityElement ^ ToXml();public override System.Security.SecurityElement ToXml ();override this.ToXml : unit -> System.Security.SecurityElementPublic Overrides Function ToXml () As SecurityElementRestituisce
Un'istanza di SecurityElement che contiene una rappresentazione con codifica XML dell'istanza di SocketPermission, incluse le informazioni sullo stato.
Esempio
Nell'esempio seguente viene usato il ToXml metodo per convertire un oggetto SocketPermission in 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()
Commenti
Il ToXml metodo crea un'istanza per codificare una SecurityElement rappresentazione dell'istanza SocketPermission , incluse le informazioni sullo stato, in XML.
Usare il metodo per ripristinare le informazioni sullo stato da un'istanza FromXmlSecurityElement .
Si applica a
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