ZoneIdentityPermission Class
Defines the identity permission for the zone from which the code originates. This class cannot be inherited.
For a list of all members of this type, see ZoneIdentityPermission Members.
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.ZoneIdentityPermission
[Visual Basic] <Serializable> NotInheritable Public Class ZoneIdentityPermission Inherits CodeAccessPermission [C#] [Serializable] public sealed class ZoneIdentityPermission : CodeAccessPermission [C++] [Serializable] public __gc __sealed class ZoneIdentityPermission : public CodeAccessPermission [JScript] public Serializable class ZoneIdentityPermission extends CodeAccessPermission
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Remarks
This permission can determine whether calling code is from a certain zone. Zones are configured according to the Microsoft Internet Explorer options, and are mapped from URL by Internet Explorer's IInternetSecurityManager and related APIs. Only exact zone matches are defined for the permission; a URL can only belong to one zone.
- Local intranet zone: The Local intranet zone is used for content located on a company's intranet. Because the servers are within a company's firewall, content on the intranet is assigned a higher level of trust.
- Trusted sites zone: The Trusted sites zone is used for content located on Web sites that are considered more reputable or trustworthy than other sites on the Internet. Users can use this zone to assign a higher level of trust to specific Internet sites. The URLs of these trusted Web sites need to be mapped into this zone by the user. By default, sites in the Trusted sites zone receive no higher trust than those in the Internet zone. A user or company needs to change the level of trust granted to this zone if they want the sites it contains to be given a higher level of trust.
- Internet zone: The Internet zone is used for the Web sites on the Internet that do not belong to another zone. The default settings allow code downloaded from these sites only minimal access to resources on the user's computer. Web sites that are not mapped into other zones automatically fall into this zone.
- Restricted sites zone: The Restricted sites zone is used for Web sites that contain content that could cause, or could have previously caused, problems when downloaded. This zone could be used to prevent code downloaded from these sites from running on the user's computer. The URLs of these untrusted Web sites need to be mapped into this zone by the user.
- Local Machine zone: The Local Machine zone is an implicit zone that is used for content that exists on the user's computer. The content found on the user's computer, except for content cached by Internet Explorer on the local system, is treated with a very high level of trust.
Example
[Visual Basic] ' This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods ' of the ZoneIdentityPermission class. Imports System Imports System.Security Imports System.Security.Permissions Imports Microsoft.VisualBasic <Assembly: CLSCompliant(True)> Module Module1 Public Class ZoneIdentityDemo ' IsSubsetOf determines whether the current permission is a subset of the specified permission. Private Function IsSubsetOfDemo() As Boolean Dim returnValue As Boolean = True Dim zone1, zone2 As SecurityZone Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission Dim zoneGen1 As New zoneGenerator() Dim zoneGen2 As New zoneGenerator() zoneGen1.ResetIndex() While zoneGen1.CreateZone(zoneIdPerm1, zone1) If zoneIdPerm1 Is Nothing Then GoTo ContinueWhile1 End If zoneGen2.ResetIndex() Console.WriteLine("********************************************************" & ControlChars.Cr) While zoneGen2.CreateZone(zoneIdPerm2, zone2) If zoneIdPerm2 Is Nothing Then GoTo ContinueWhile2 End If Try If zoneIdPerm1.IsSubsetOf(zoneIdPerm2) Then Console.WriteLine((zoneIdPerm1.SecurityZone.ToString() & _ " is a subset of " & zoneIdPerm2.SecurityZone.ToString())) Else Console.WriteLine((zoneIdPerm1.SecurityZone.ToString() & _ " is not a subset of " & zoneIdPerm2.SecurityZone.ToString())) End If Catch e As Exception Console.WriteLine(("An exception was thrown for subset :" & _ zoneIdPerm1.ToString() & ControlChars.Cr & zoneIdPerm2.ToString() & _ ControlChars.Cr & e.ToString())) returnValue = False End Try ContinueWhile2: End While ContinueWhile1: End While Return returnValue End Function 'IsSubsetOfDemo ' Union creates a new permission that is the union of the current permission and the specified permission. Private Function UnionDemo() As Boolean Dim returnValue As Boolean = True Dim zone1, zone2 As SecurityZone Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission Dim zoneIdPerm3 As IPermission Dim zoneGen1 As New zoneGenerator() Dim zoneGen2 As New zoneGenerator() zoneGen1.ResetIndex() While zoneGen1.CreateZone(zoneIdPerm1, zone1) If zoneIdPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("**********************************************************" & ControlChars.Cr) zoneGen2.ResetIndex() While zoneGen2.CreateZone(zoneIdPerm2, zone2) If zoneIdPerm2 Is Nothing Then GoTo ContinueWhile2 End If zoneIdPerm3 = CType(zoneIdPerm1.Union(zoneIdPerm2), ZoneIdentityPermission) zoneIdPerm3 = zoneIdPerm1.Union(zoneIdPerm2) If zoneIdPerm3 Is Nothing Then Console.WriteLine(("The union of " & zone1.ToString() & " and " & _ zone2.ToString() & " is null.")) Else Console.WriteLine(("The union of " & zoneIdPerm1.SecurityZone.ToString() & " and " _ & zoneIdPerm2.SecurityZone.ToString() & " = " _ & CType(zoneIdPerm3, Object).SecurityZone.ToString())) End If ContinueWhile2: End While ContinueWhile1: End While Return returnValue End Function 'UnionDemo ' Intersect creates and returns a new permission that is the intersection of the current ' permission and the permission specified. Private Function IntersectDemo() As Boolean Dim returnValue As Boolean = True Dim zone1, zone2 As SecurityZone Dim zoneIdPerm1, zoneIdPerm2, zoneIdPerm3 As ZoneIdentityPermission Dim zoneGen1 As New zoneGenerator() Dim zoneGen2 As New zoneGenerator() zoneGen1.ResetIndex() While zoneGen1.CreateZone(zoneIdPerm1, zone1) If zoneIdPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("**********************************************************" & ControlChars.Cr) zoneGen2.ResetIndex() While zoneGen2.CreateZone(zoneIdPerm2, zone2) If zoneIdPerm2 Is Nothing Then GoTo ContinueWhile2 End If zoneIdPerm3 = CType(zoneIdPerm1.Intersect(zoneIdPerm2), ZoneIdentityPermission) If Not (zoneIdPerm3 Is Nothing) Then Console.WriteLine(("The intersection of " & zone1.ToString() & " and " & _ zone2.ToString() & " = " & CType(zoneIdPerm3, Object).SecurityZone.ToString())) Else Console.WriteLine(("The intersection of " & zone1.ToString() & " and " & _ zone2.ToString() & " is null.")) End If ContinueWhile2: End While ContinueWhile1: End While Return returnValue End Function 'IntersectDemo 'Copy creates and returns an identical copy of the current permission. Private Function CopyDemo() As Boolean Dim returnValue As Boolean = True Dim zone1 As SecurityZone Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission Dim zoneGen1 As New zoneGenerator() Dim zoneGen2 As New zoneGenerator() zoneGen1.ResetIndex() While zoneGen1.CreateZone(zoneIdPerm1, zone1) If zoneIdPerm1 Is Nothing Then GoTo ContinueWhile1 End If zoneGen2.ResetIndex() Console.WriteLine("********************************************************" & ControlChars.Cr) Try zoneIdPerm2 = CType(zoneIdPerm1.Copy(), ZoneIdentityPermission) Console.WriteLine(("Result of copy = " & zoneIdPerm2.ToString())) Catch e As Exception Console.WriteLine(("Copy failed :" & zoneIdPerm1.ToString() & e.ToString())) GoTo ContinueWhile1 End Try ContinueWhile1: End While Return returnValue End Function 'CopyDemo ' ToXml creates an XML encoding of the permission and its current state; ' FromXml reconstructs a permission with the specified state from the XML encoding. Private Function ToFromXmlDemo() As Boolean Dim returnValue As Boolean = True Dim zone1 As SecurityZone Dim zoneIdPerm1, zoneIdPerm2 As ZoneIdentityPermission Dim zoneGen1 As New zoneGenerator() Dim zoneGen2 As New zoneGenerator() zoneGen1.ResetIndex() While zoneGen1.CreateZone(zoneIdPerm1, zone1) If zoneIdPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("********************************************************" & ControlChars.Cr) zoneGen2.ResetIndex() Try zoneIdPerm2 = New ZoneIdentityPermission(PermissionState.None) zoneIdPerm2.FromXml(zoneIdPerm1.ToXml()) Console.WriteLine(("Result of ToFromXml = " & zoneIdPerm2.ToString())) Catch e As Exception Console.WriteLine(("ToFromXml failed :" & zoneIdPerm1.ToString() & e.ToString())) GoTo ContinueWhile1 End Try ContinueWhile1: End While Return returnValue End Function 'ToFromXmlDemo ' Invoke all demos. Public Function RunDemo() As Boolean Dim returnCode As Boolean = True Dim tempReturnCode As Boolean ' Call the IsSubsetOf demo. If IsSubsetOfDemo() Then Console.Out.WriteLine("IsSubsetOf demo completed successfully.") tempReturnCode = True Else Console.Out.WriteLine("IsSubsetOf demo failed.") tempReturnCode = False End If returnCode = tempReturnCode And returnCode ' Call the Union demo. If UnionDemo() Then Console.Out.WriteLine("Union demo completed successfully.") tempReturnCode = True Else Console.Out.WriteLine("Union demo failed.") tempReturnCode = False End If returnCode = tempReturnCode And returnCode ' Call the Intersect demo. If IntersectDemo() Then Console.Out.WriteLine("Intersect demo completed successfully.") tempReturnCode = True Else Console.Out.WriteLine("Intersect demo failed.") tempReturnCode = False End If returnCode = tempReturnCode And returnCode ' Call the Copy demo. If CopyDemo() Then Console.Out.WriteLine("Copy demo completed successfully.") tempReturnCode = True Else Console.Out.WriteLine("Copy demo failed.") tempReturnCode = False End If returnCode = tempReturnCode And returnCode ' Call the ToFromXml demo. If ToFromXmlDemo() Then Console.Out.WriteLine("ToFromXml demo completed successfully.") tempReturnCode = True Else Console.Out.WriteLine("ToFromXml demo failed.") tempReturnCode = False End If returnCode = tempReturnCode And returnCode Return returnCode End Function ' Test harness. Public Overloads Shared Sub Main(ByVal args() As [String]) Try Dim democase As New ZoneIdentityDemo() Dim returnCode As Boolean = democase.RunDemo() If returnCode Then Console.Out.WriteLine("ZoneIdentityPermission demo completed successfully.") Console.Out.WriteLine("Press the Enter key to exit.") Dim consoleInput As String = Console.ReadLine() System.Environment.ExitCode = 100 Else Console.Out.WriteLine("ZoneIdentityPermission demo failed.") Console.Out.WriteLine("Press the Enter key to exit.") Dim consoleInput As String = Console.ReadLine() System.Environment.ExitCode = 101 End If Catch e As Exception Console.Out.WriteLine("ZoneIdentityPermission demo failed.") Console.WriteLine(e.ToString()) Console.Out.WriteLine("Press the Enter key to exit.") Dim consoleInput As String = Console.ReadLine() System.Environment.ExitCode = 101 End Try End Sub 'Main End Class 'ZoneIdentityDemo _ ' This class generates ZoneIdentityPermission objects. Friend Class ZoneGenerator Private myZone As SecurityZone() = {SecurityZone.NoZone, _ SecurityZone.Internet, _ SecurityZone.Intranet, _ SecurityZone.MyComputer, _ SecurityZone.Untrusted, _ SecurityZone.Trusted} Private zoneIndex As Integer = 0 Public Sub New() ResetIndex() End Sub 'New Public Sub ResetIndex() zoneIndex = 0 End Sub 'ResetIndex ' CreateZone creates ZoneIdentityPermission objects. Public Function CreateZone(ByRef zonePerm As ZoneIdentityPermission, ByRef zone As SecurityZone) As Boolean If zoneIndex >= myZone.Length Then zonePerm = New ZoneIdentityPermission(PermissionState.None) zone = SecurityZone.NoZone zoneIndex = zoneIndex + 1 Return False End If zone = myZone(zoneIndex) zoneIndex = zoneIndex + 1 Try zonePerm = New ZoneIdentityPermission(zone) Return True Catch e As Exception Console.WriteLine(("Cannot create ZoneIdentityPermission: " & zone & " " & e.ToString())) zonePerm = New ZoneIdentityPermission(PermissionState.None) zone = SecurityZone.NoZone Return True End Try End Function 'CreateZone ' End of ZoneGenerator. End Module [C#] // This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods // of the ZoneIdentityPermission class. using System; using System.Security; using System.Security.Permissions; [assembly:CLSCompliant(true)] public class ZoneIdentityDemo { // IsSubsetOf determines whether the current permission is a subset of the specified permission. private bool IsSubsetOfDemo() { bool returnValue = true; SecurityZone zone1,zone2; ZoneIdentityPermission zoneIdPerm1,zoneIdPerm2; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while(zoneGen1.CreateZone(out zoneIdPerm1, out zone1)) { if(zoneIdPerm1 == null) continue; zoneGen2.ResetIndex(); Console.WriteLine("********************************************************\n"); while(zoneGen2.CreateZone(out zoneIdPerm2, out zone2)) { if(zoneIdPerm2 == null) continue; try { if (zoneIdPerm1.IsSubsetOf(zoneIdPerm2)) { Console.WriteLine(zoneIdPerm1.SecurityZone + " is a subset of " + zoneIdPerm2.SecurityZone); } else { Console.WriteLine(zoneIdPerm1.SecurityZone + " is not a subset of " + zoneIdPerm2.SecurityZone); } } catch(Exception e) { Console.WriteLine("An exception was thrown for subset :" + zoneIdPerm1 + "\n" + zoneIdPerm2 +"\n" + e); returnValue=false; } } } return returnValue; } // Union creates a new permission that is the union of the current permission and the specified permission. private bool UnionDemo() { bool returnValue = true; SecurityZone zone1,zone2; ZoneIdentityPermission zoneIdPerm1,zoneIdPerm2; IPermission zoneIdPerm3; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while(zoneGen1.CreateZone(out zoneIdPerm1, out zone1)) { if(zoneIdPerm1 == null) continue; Console.WriteLine("**********************************************************\n"); zoneGen2.ResetIndex(); while(zoneGen2.CreateZone(out zoneIdPerm2, out zone2)) { if(zoneIdPerm2 == null) continue; zoneIdPerm3 = (ZoneIdentityPermission)zoneIdPerm1.Union(zoneIdPerm2); zoneIdPerm3 = zoneIdPerm1.Union(zoneIdPerm2); if(zoneIdPerm3 == null) { Console.WriteLine("The union of " + zone1 + " and " + zone2 + " is null." ); } else { Console.WriteLine("The union of " + zoneIdPerm1.SecurityZone + " and " + zoneIdPerm2.SecurityZone + " = " + ((ZoneIdentityPermission)zoneIdPerm3).SecurityZone.ToString()); } } } return returnValue; } // Intersect creates and returns a new permission that is the intersection of the current // permission and the permission specified. private bool IntersectDemo() { bool returnValue = true; SecurityZone zone1,zone2; ZoneIdentityPermission zoneIdPerm1,zoneIdPerm2,zoneIdPerm3; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while(zoneGen1.CreateZone(out zoneIdPerm1, out zone1)) { if(zoneIdPerm1 == null) continue; Console.WriteLine("**********************************************************\n"); zoneGen2.ResetIndex(); while(zoneGen2.CreateZone(out zoneIdPerm2, out zone2)) { if(zoneIdPerm2 == null) continue; zoneIdPerm3 = (ZoneIdentityPermission)zoneIdPerm1.Intersect(zoneIdPerm2); if (zoneIdPerm3 != null) { Console.WriteLine("The intersection of " + zone1 + " and " + zone2 + " = " + ((ZoneIdentityPermission)zoneIdPerm3).SecurityZone.ToString()); } else { Console.WriteLine("The intersection of " + zone1 + " and " + zone2 + " is null." ); } } } return returnValue; } //Copy creates and returns an identical copy of the current permission. private bool CopyDemo() { bool returnValue = true; SecurityZone zone1; ZoneIdentityPermission zoneIdPerm1,zoneIdPerm2; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while(zoneGen1.CreateZone(out zoneIdPerm1, out zone1)) { if(zoneIdPerm1 == null) continue; zoneGen2.ResetIndex(); Console.WriteLine("********************************************************\n"); try { zoneIdPerm2 = (ZoneIdentityPermission)zoneIdPerm1.Copy(); Console.WriteLine("Result of copy = " + zoneIdPerm2.ToString()); } catch(Exception e) { Console.WriteLine("Copy failed :" + zoneIdPerm1.ToString() + e); continue; } } return returnValue; } // ToXml creates an XML encoding of the permission and its current state; // FromXml reconstructs a permission with the specified state from the XML encoding. private bool ToFromXmlDemo() { bool returnValue = true; SecurityZone zone1; ZoneIdentityPermission zoneIdPerm1,zoneIdPerm2; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while(zoneGen1.CreateZone(out zoneIdPerm1, out zone1)) { if(zoneIdPerm1 == null) continue; Console.WriteLine("********************************************************\n"); zoneGen2.ResetIndex(); try { zoneIdPerm2= new ZoneIdentityPermission(PermissionState.None); zoneIdPerm2.FromXml(zoneIdPerm1.ToXml()); Console.WriteLine("Result of ToFromXml = " + zoneIdPerm2.ToString()); } catch(Exception e) { Console.WriteLine("ToFromXml failed :" + zoneIdPerm1.ToString() + e); continue; } } return returnValue; } // Invoke all demos. public bool RunDemo() { bool returnCode = true; bool tempReturnCode; // Call the IsSubsetOf demo. if(tempReturnCode= IsSubsetOfDemo())Console.Out.WriteLine("IsSubsetOf demo completed successfully."); else Console.Out.WriteLine("IsSubsetOf demo failed."); returnCode=tempReturnCode && returnCode; // Call the Union demo. if(tempReturnCode= UnionDemo())Console.Out.WriteLine("Union demo completed successfully."); else Console.Out.WriteLine("Union demo failed."); returnCode=tempReturnCode && returnCode; // Call the Intersect demo. if(tempReturnCode= IntersectDemo())Console.Out.WriteLine("Intersect demo completed successfully."); else Console.Out.WriteLine("Intersect demo failed."); returnCode=tempReturnCode && returnCode; // Call the Copy demo. if(tempReturnCode= CopyDemo())Console.Out.WriteLine("Copy demo completed successfully."); else Console.Out.WriteLine("Copy demo failed."); returnCode=tempReturnCode && returnCode; // Call the ToFromXml demo. if(tempReturnCode= ToFromXmlDemo())Console.Out.WriteLine("ToFromXml demo completed successfully."); else Console.Out.WriteLine("ToFromXml demo failed."); returnCode=tempReturnCode && returnCode; return ( returnCode ); } // Test harness. public static void Main(String[] args) { try { ZoneIdentityDemo democase = new ZoneIdentityDemo(); bool returnCode = democase.RunDemo(); if (returnCode) { Console.Out.WriteLine("ZoneIdentityPermission demo completed successfully."); Console.Out.WriteLine("Press the Enter key to exit."); string consoleInput = Console.ReadLine(); System.Environment.ExitCode = 100; } else { Console.Out.WriteLine("ZoneIdentityPermission demo failed."); Console.Out.WriteLine("Press the Enter key to exit."); string consoleInput = Console.ReadLine(); System.Environment.ExitCode = 101; } } catch(Exception e) { Console.Out.WriteLine("ZoneIdentityPermission demo failed."); Console.WriteLine(e.ToString()); Console.Out.WriteLine("Press the Enter key to exit."); string consoleInput = Console.ReadLine(); System.Environment.ExitCode = 101; } } } // This class generates ZoneIdentityPermission objects. internal class ZoneGenerator { private SecurityZone[] myZone = {SecurityZone.NoZone,SecurityZone.Internet,SecurityZone.Intranet,SecurityZone.MyComputer,SecurityZone.Untrusted,SecurityZone.Trusted}; private int zoneIndex = 0; public ZoneGenerator() { ResetIndex(); } public void ResetIndex() { zoneIndex = 0; } // CreateZone creates ZoneIdentityPermission objects. public bool CreateZone(out ZoneIdentityPermission zonePerm, out SecurityZone zone) { if(zoneIndex >= myZone.Length) { zonePerm = new ZoneIdentityPermission(PermissionState.None); zone=SecurityZone.NoZone; zoneIndex++; return false; } zone = myZone[zoneIndex++]; try { zonePerm = new ZoneIdentityPermission(zone); return true; } catch(Exception e) { Console.WriteLine("Cannot create ZoneIdentityPermission: " + zone +" "+e); zonePerm = new ZoneIdentityPermission(PermissionState.None); zone=SecurityZone.NoZone; return true; } } } // End of ZoneGenerator. [C++] // This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods // of the ZoneIdentityPermission class. #using <mscorlib.dll> using namespace System; using namespace System::Security; using namespace System::Security::Permissions; using namespace System::Runtime::InteropServices; [assembly:CLSCompliant(true)]; // This class generates ZoneIdentityPermission objects. __gc class ZoneGenerator { private: SecurityZone myZone[]; int zoneIndex; public: ZoneGenerator() { SecurityZone temp[] = {SecurityZone::NoZone, SecurityZone::Internet, SecurityZone::Intranet, SecurityZone::MyComputer, SecurityZone::Untrusted, SecurityZone::Trusted}; myZone = temp; ResetIndex(); }; void ResetIndex() { zoneIndex = 0; }; // CreateZone creates ZoneIdentityPermission objects. public: bool CreateZone([Out] ZoneIdentityPermission** zonePerm, [Out] SecurityZone* zone) { if (zoneIndex >= myZone->Length) { *zonePerm = new ZoneIdentityPermission(PermissionState::None); *zone=SecurityZone::NoZone; zoneIndex++; return false; }; *zone = myZone[zoneIndex++]; try { *zonePerm = new ZoneIdentityPermission(*zone); return true; } catch (Exception* e) { Console::WriteLine(S"Cannot create ZoneIdentityPermission: {0} {1}", __box(*zone), e); *zonePerm = new ZoneIdentityPermission(PermissionState::None); *zone=SecurityZone::NoZone; return false; }; }; }; // End of ZoneGenerator. public __gc class ZoneIdentityDemo { // IsSubsetOf determines whether the current permission is a subset of the specified permission. private: bool IsSubsetOfDemo() { bool returnValue = true; SecurityZone zone1, zone2; ZoneIdentityPermission* zoneIdPerm1, * zoneIdPerm2; ZoneGenerator* zoneGen1 = new ZoneGenerator(); ZoneGenerator* zoneGen2 = new ZoneGenerator(); zoneGen1->ResetIndex(); while(zoneGen1->CreateZone(&zoneIdPerm1, &zone1)) { if (zoneIdPerm1 == 0) continue; zoneGen2->ResetIndex(); Console::WriteLine(S"********************************************************\n"); while(zoneGen2->CreateZone(&zoneIdPerm2, &zone2)) { if (zoneIdPerm2 == 0) continue; try { if (zoneIdPerm1->IsSubsetOf(zoneIdPerm2)) { Console::WriteLine(S"{0} is a subset of {1}", __box(zoneIdPerm1->SecurityZone), __box(zoneIdPerm2->SecurityZone)); } else { Console::WriteLine(S"{0} is not a subset of {1}", __box(zoneIdPerm1->SecurityZone), __box(zoneIdPerm2->SecurityZone)); } } catch (Exception* e) { Console::WriteLine(S"An exception was thrown for subset : {0}\n{1}\n{2}", zoneIdPerm1, zoneIdPerm2, e); returnValue=false; } } } return returnValue; } // Union creates a new permission that is the union of the current permission and the specified permission. private: bool UnionDemo() { bool returnValue = true; SecurityZone zone1, zone2; ZoneIdentityPermission* zoneIdPerm1, *zoneIdPerm2; IPermission* zoneIdPerm3; ZoneGenerator* zoneGen1 = new ZoneGenerator(); ZoneGenerator* zoneGen2 = new ZoneGenerator(); zoneGen1->ResetIndex(); while(zoneGen1->CreateZone(&zoneIdPerm1, &zone1)) { if (zoneIdPerm1 == 0) continue; Console::WriteLine(S"**********************************************************\n"); zoneGen2->ResetIndex(); while(zoneGen2->CreateZone(&zoneIdPerm2, &zone2)) { if (zoneIdPerm2 == 0) continue; zoneIdPerm3 = zoneIdPerm1->Union(zoneIdPerm2); if (zoneIdPerm3 == 0) { Console::WriteLine(S"The union of {0} and {1} is null.", __box(zone1), __box(zone2)); } else { Console::WriteLine(S"The union of {0} and {1} = {2}", __box(zoneIdPerm1->SecurityZone), __box(zoneIdPerm2->SecurityZone), __box((dynamic_cast<ZoneIdentityPermission*>(zoneIdPerm3))->SecurityZone)); } } } return returnValue; } // Intersect creates and returns a new permission that is the intersection of the current // permission and the permission specified. private: bool IntersectDemo() { bool returnValue = true; SecurityZone zone1, zone2; ZoneIdentityPermission* zoneIdPerm1, *zoneIdPerm2, *zoneIdPerm3; ZoneGenerator* zoneGen1 = new ZoneGenerator(); ZoneGenerator* zoneGen2 = new ZoneGenerator(); zoneGen1->ResetIndex(); while(zoneGen1->CreateZone(&zoneIdPerm1, &zone1)) { if (zoneIdPerm1 == 0) continue; Console::WriteLine(S"**********************************************************\n"); zoneGen2->ResetIndex(); while(zoneGen2->CreateZone(&zoneIdPerm2, &zone2)) { if (zoneIdPerm2 == 0) continue; zoneIdPerm3 = dynamic_cast<ZoneIdentityPermission*>(zoneIdPerm1->Intersect(zoneIdPerm2)); if (zoneIdPerm3 != 0) { Console::WriteLine(S"The intersection of {0} and {1} = {2}", __box(zone1), __box(zone2), __box((dynamic_cast<ZoneIdentityPermission*>(zoneIdPerm3))->SecurityZone)); } else { Console::WriteLine(S"The intersection of {0} and {1} is null.", __box(zone1), __box(zone2)); } } } return returnValue; } //Copy creates and returns an identical copy of the current permission. private: bool CopyDemo() { bool returnValue = true; SecurityZone zone1; ZoneIdentityPermission* zoneIdPerm1, *zoneIdPerm2; ZoneGenerator* zoneGen1 = new ZoneGenerator(); ZoneGenerator* zoneGen2 = new ZoneGenerator(); zoneGen1->ResetIndex(); while(zoneGen1->CreateZone(&zoneIdPerm1, &zone1)) { if (zoneIdPerm1 == 0) continue; zoneGen2->ResetIndex(); Console::WriteLine(S"********************************************************\n"); try { zoneIdPerm2 = dynamic_cast<ZoneIdentityPermission*>(zoneIdPerm1->Copy()); Console::WriteLine(S"Result of copy = {0}", zoneIdPerm2); } catch (Exception* e) { Console::WriteLine(S"Copy failed : {0}{1}", zoneIdPerm1, e); continue; } } return returnValue; } // ToXml creates an XML encoding of the permission and its current state; // FromXml reconstructs a permission with the specified state from the XML encoding. private: bool ToFromXmlDemo() { bool returnValue = true; SecurityZone zone1; ZoneIdentityPermission* zoneIdPerm1, *zoneIdPerm2; ZoneGenerator* zoneGen1 = new ZoneGenerator(); ZoneGenerator* zoneGen2 = new ZoneGenerator(); zoneGen1->ResetIndex(); while(zoneGen1->CreateZone(&zoneIdPerm1, &zone1)) { if (zoneIdPerm1 == 0) continue; Console::WriteLine(S"********************************************************\n"); zoneGen2->ResetIndex(); try { zoneIdPerm2 = new ZoneIdentityPermission(PermissionState::None); zoneIdPerm2->FromXml(zoneIdPerm1->ToXml()); Console::WriteLine(S"Result of ToFromXml = {0}", zoneIdPerm2); } catch (Exception* e) { Console::WriteLine(S"ToFromXml failed : {0}{1}", zoneIdPerm1, e); continue; } } return returnValue; } // Invoke all demos. public: bool RunDemo() { bool returnCode = true; bool tempReturnCode; // Call the IsSubsetOf demo. if (tempReturnCode= IsSubsetOfDemo()) Console::WriteLine(S"IsSubsetOf demo completed successfully."); else Console::WriteLine(S"IsSubsetOf demo failed."); returnCode=tempReturnCode && returnCode; // Call the Union demo. if (tempReturnCode= UnionDemo()) Console::WriteLine(S"Union demo completed successfully."); else Console::WriteLine(S"Union demo failed."); returnCode=tempReturnCode && returnCode; // Call the Intersect demo. if (tempReturnCode= IntersectDemo()) Console::WriteLine(S"Intersect demo completed successfully."); else Console::WriteLine(S"Intersect demo failed."); returnCode=tempReturnCode && returnCode; // Call the Copy demo. if (tempReturnCode= CopyDemo()) Console::WriteLine(S"Copy demo completed successfully."); else Console::WriteLine(S"Copy demo failed."); returnCode=tempReturnCode && returnCode; // Call the ToFromXml demo. if (tempReturnCode= ToFromXmlDemo()) Console::WriteLine(S"ToFromXml demo completed successfully."); else Console::WriteLine(S"ToFromXml demo failed."); returnCode=tempReturnCode && returnCode; return (returnCode); } }; // Test harness. int main() { try { ZoneIdentityDemo* democase = new ZoneIdentityDemo(); bool returnCode = democase->RunDemo(); if (returnCode) { Console::WriteLine(S"ZoneIdentityPermission demo completed successfully."); Console::WriteLine(S"Press the Enter key to exit."); Console::ReadLine(); System::Environment::ExitCode = 100; } else { Console::WriteLine(S"ZoneIdentityPermission demo failed."); Console::WriteLine(S"Press the Enter key to exit."); Console::ReadLine(); System::Environment::ExitCode = 101; } } catch (Exception* e) { Console::WriteLine(S"ZoneIdentityPermission demo failed."); Console::WriteLine(e); Console::WriteLine(S"Press the Enter key to exit."); Console::ReadLine(); System::Environment::ExitCode = 101; } }
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Requirements
Namespace: System.Security.Permissions
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: Mscorlib (in Mscorlib.dll)
See Also
ZoneIdentityPermission Members | System.Security.Permissions Namespace | Permissions | Requesting Permissions | ZoneIdentityPermissionAttribute | Zone | ZoneMembershipCondition