SecurityPermission Class
Describes a set of security permissions applied to code. This class cannot be inherited.
For a list of all members of this type, see SecurityPermission Members.
System.Object
System.Security.CodeAccessPermission
System.Security.Permissions.SecurityPermission
[Visual Basic] <Serializable> NotInheritable Public Class SecurityPermission Inherits CodeAccessPermission Implements IUnrestrictedPermission [C#] [Serializable] public sealed class SecurityPermission : CodeAccessPermission, IUnrestrictedPermission [C++] [Serializable] public __gc __sealed class SecurityPermission : public CodeAccessPermission, IUnrestrictedPermission [JScript] public Serializable class SecurityPermission extends CodeAccessPermission implements IUnrestrictedPermission
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 uses the SecurityPermissionFlag enumeration. The values for this enumeration can be found in its documentation.
Example
[Visual Basic] ' This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods ' of the SecurityPermission Class. Imports System Imports System.Security Imports System.Security.Permissions Imports Microsoft.VisualBasic <Assembly: CLSCompliant(True)> Public Class SecurityPermissionDemo ' IsSubsetOf determines whether the current permission is a subset of the specified permission. Private Function IsSubsetOfDemo() As Boolean Dim returnValue As Boolean = True Dim Security1, Security2 As SecurityPermissionFlag Dim SecurityPerm1, SecurityPerm2 As SecurityPermission Dim SecurityGen1 As New SecurityGenerator() Dim SecurityGen2 As New SecurityGenerator() SecurityGen1.ResetIndex() While SecurityGen1.CreateSecurity(SecurityPerm1, Security1) If SecurityPerm1 Is Nothing Then GoTo ContinueWhile1 End If SecurityGen2.ResetIndex() Console.WriteLine("********************************************************" & ControlChars.Lf) While SecurityGen2.CreateSecurity(SecurityPerm2, Security2) If SecurityPerm2 Is Nothing Then GoTo ContinueWhile2 End If Try If SecurityPerm1.IsSubsetOf(SecurityPerm2) Then Console.WriteLine((SecurityPerm1.Flags.ToString().ToString() _ & " is a subset of " & SecurityPerm2.Flags.ToString())) Else Console.WriteLine((SecurityPerm1.Flags.ToString() & " is not a subset of " _ & SecurityPerm2.Flags.ToString())) End If Catch e As Exception Console.WriteLine(("An exception was thrown for subset :" & SecurityPerm1.ToString() _ & ControlChars.Lf & SecurityPerm2.ToString() & ControlChars.Lf & 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 Security1, Security2 As SecurityPermissionFlag Dim SecurityPerm1, SecurityPerm2 As SecurityPermission Dim SecurityPerm3 As IPermission Dim SecurityGen1 As New SecurityGenerator() Dim SecurityGen2 As New SecurityGenerator() SecurityGen1.ResetIndex() While SecurityGen1.CreateSecurity(SecurityPerm1, Security1) If SecurityPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("**********************************************************" & ControlChars.Lf) SecurityGen2.ResetIndex() While SecurityGen2.CreateSecurity(SecurityPerm2, Security2) If SecurityPerm2 Is Nothing Then GoTo ContinueWhile2 End If SecurityPerm3 = CType(SecurityPerm1.Union(SecurityPerm2), SecurityPermission) SecurityPerm3 = SecurityPerm1.Union(SecurityPerm2) If SecurityPerm3 Is Nothing Then Console.WriteLine(("The union of " & Security1 & " and " & Security2 & " is null.")) Else Console.WriteLine(("The union of " & SecurityPerm1.Flags.ToString() _ & " and " & SecurityPerm2.Flags.ToString() & " = " & CType(SecurityPerm3, SecurityPermission).Flags.ToString().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 Security1, Security2 As SecurityPermissionFlag Dim SecurityPerm1, SecurityPerm2, SecurityPerm3 As SecurityPermission Dim SecurityGen1 As New SecurityGenerator() Dim SecurityGen2 As New SecurityGenerator() SecurityGen1.ResetIndex() While SecurityGen1.CreateSecurity(SecurityPerm1, Security1) If SecurityPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("**********************************************************" & ControlChars.Lf) SecurityGen2.ResetIndex() While SecurityGen2.CreateSecurity(SecurityPerm2, Security2) If SecurityPerm2 Is Nothing Then GoTo ContinueWhile2 End If SecurityPerm3 = CType(SecurityPerm1.Intersect(SecurityPerm2), SecurityPermission) If Not (SecurityPerm3 Is Nothing) Then Console.WriteLine(("The intersection of " & Security1.ToString() & " and " _ & Security2.ToString() & " = " _ & CType(SecurityPerm3, SecurityPermission).Flags.ToString().ToString())) Else Console.WriteLine(("The intersection of " & Security1.ToString() & " and " _ & Security2.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 Security1 As SecurityPermissionFlag Dim SecurityPerm1, SecurityPerm2 As SecurityPermission Dim SecurityGen1 As New SecurityGenerator() Dim SecurityGen2 As New SecurityGenerator() SecurityGen1.ResetIndex() While SecurityGen1.CreateSecurity(SecurityPerm1, Security1) If SecurityPerm1 Is Nothing Then GoTo ContinueWhile1 End If SecurityGen2.ResetIndex() Console.WriteLine("********************************************************" & ControlChars.Lf) Try SecurityPerm2 = CType(SecurityPerm1.Copy(), SecurityPermission) Console.WriteLine(("Result of copy = " & SecurityPerm2.ToString())) Catch e As Exception Console.WriteLine(("Copy failed :" & SecurityPerm1.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 Security1 As SecurityPermissionFlag Dim SecurityPerm1, SecurityPerm2 As SecurityPermission Dim SecurityGen1 As New SecurityGenerator() Dim SecurityGen2 As New SecurityGenerator() SecurityGen1.ResetIndex() While SecurityGen1.CreateSecurity(SecurityPerm1, Security1) If SecurityPerm1 Is Nothing Then GoTo ContinueWhile1 End If Console.WriteLine("********************************************************" & ControlChars.Lf) SecurityGen2.ResetIndex() Try SecurityPerm2 = New SecurityPermission(PermissionState.None) SecurityPerm2.FromXml(SecurityPerm1.ToXml()) Console.WriteLine(("Result of ToFromXml = " & SecurityPerm2.ToString())) Catch e As Exception Console.WriteLine(("ToFromXml failed :" & SecurityPerm1.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. tempReturnCode = IsSubsetOfDemo() If tempReturnCode Then Console.Out.WriteLine("IsSubsetOf demo completed successfully.") Else Console.Out.WriteLine("IsSubsetOf demo failed.") End If returnCode = tempReturnCode AndAlso returnCode ' Call the Union demo. tempReturnCode = UnionDemo() If tempReturnCode Then Console.Out.WriteLine("Union demo completed successfully.") Else Console.Out.WriteLine("Union demo failed.") End If returnCode = tempReturnCode AndAlso returnCode ' Call the Intersect demo. tempReturnCode = IntersectDemo() If tempReturnCode Then Console.Out.WriteLine("Intersect demo completed successfully.") Else Console.Out.WriteLine("Intersect demo failed.") End If returnCode = tempReturnCode AndAlso returnCode ' Call the Copy demo. tempReturnCode = CopyDemo() If tempReturnCode Then Console.Out.WriteLine("Copy demo completed successfully.") Else Console.Out.WriteLine("Copy demo failed.") End If returnCode = tempReturnCode AndAlso returnCode ' Call the ToFromXml demo. tempReturnCode = ToFromXmlDemo() If tempReturnCode Then Console.Out.WriteLine("ToFromXml demo completed successfully.") Else Console.Out.WriteLine("ToFromXml demo failed.") End If returnCode = tempReturnCode AndAlso returnCode Return returnCode End Function 'runDemo ' Test harness. Public Overloads Shared Sub Main(ByVal args() As [String]) Try Dim democase As New SecurityPermissionDemo() Dim returnCode As Boolean = democase.runDemo() If returnCode Then Console.Out.WriteLine("SecurityPermission 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("SecurityPermission 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("SecurityPermission 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 'SecurityPermissionDemo ' This class generates SecurityPermission objects. Friend Class SecurityGenerator Private mySecurity As SecurityPermissionFlag() = {SecurityPermissionFlag.AllFlags, _ SecurityPermissionFlag.Assertion, SecurityPermissionFlag.ControlAppDomain, _ SecurityPermissionFlag.ControlDomainPolicy, SecurityPermissionFlag.ControlEvidence, _ SecurityPermissionFlag.ControlPolicy, SecurityPermissionFlag.ControlPrincipal, _ SecurityPermissionFlag.ControlThread, SecurityPermissionFlag.Execution, _ SecurityPermissionFlag.Infrastructure, SecurityPermissionFlag.NoFlags, _ SecurityPermissionFlag.RemotingConfiguration, _ SecurityPermissionFlag.SerializationFormatter, _ SecurityPermissionFlag.SkipVerification, _ SecurityPermissionFlag.UnmanagedCode} Private reflectionIndex As Integer = 0 Public Sub New() ResetIndex() End Sub 'New Public Sub ResetIndex() reflectionIndex = 0 End Sub 'ResetIndex ' CreateSecurity creates a SecurityPermission object. Public Function CreateSecurity(ByRef SecurityPerm As SecurityPermission, _ ByRef Security As SecurityPermissionFlag) As Boolean If reflectionIndex >= mySecurity.Length Then SecurityPerm = New SecurityPermission(PermissionState.None) Security = SecurityPermissionFlag.NoFlags reflectionIndex &= 1 Return False End If Security = mySecurity(reflectionIndex) reflectionIndex = reflectionIndex + 1 Try SecurityPerm = New SecurityPermission(Security) Return True Catch e As Exception Console.WriteLine(("Cannot create SecurityPermission: " & Security & " " & e.ToString())) SecurityPerm = New SecurityPermission(PermissionState.None) Security = SecurityPermissionFlag.NoFlags Return True End Try End Function 'CreateSecurity ' End of SecurityGenerator. [C#] // This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods // of the SecurityPermission Class. using System; using System.Security; using System.Security.Permissions; [assembly:CLSCompliant(true)] public class SecurityPermissionDemo { // IsSubsetOf determines whether the current permission is a subset of the specified permission. private bool IsSubsetOfDemo() { bool returnValue = true; SecurityPermissionFlag Security1,Security2; SecurityPermission SecurityPerm1,SecurityPerm2; SecurityGenerator SecurityGen1 = new SecurityGenerator(); SecurityGenerator SecurityGen2 = new SecurityGenerator(); SecurityGen1.ResetIndex(); while(SecurityGen1.CreateSecurity(out SecurityPerm1, out Security1)) { if(SecurityPerm1 == null) continue; SecurityGen2.ResetIndex(); Console.WriteLine("********************************************************\n"); while(SecurityGen2.CreateSecurity(out SecurityPerm2, out Security2)) { if(SecurityPerm2 == null) continue; try { if (SecurityPerm1.IsSubsetOf(SecurityPerm2)) { Console.WriteLine(SecurityPerm1.Flags + " is a subset of " + SecurityPerm2.Flags); } else { Console.WriteLine(SecurityPerm1.Flags + " is not a subset of " + SecurityPerm2.Flags); } } catch(Exception e) { Console.WriteLine("An exception was thrown for subset :" + SecurityPerm1 + "\n" + SecurityPerm2 +"\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; SecurityPermissionFlag Security1,Security2; SecurityPermission SecurityPerm1,SecurityPerm2; IPermission SecurityPerm3; SecurityGenerator SecurityGen1 = new SecurityGenerator(); SecurityGenerator SecurityGen2 = new SecurityGenerator(); SecurityGen1.ResetIndex(); while(SecurityGen1.CreateSecurity(out SecurityPerm1, out Security1)) { if(SecurityPerm1 == null) continue; Console.WriteLine("**********************************************************\n"); SecurityGen2.ResetIndex(); while(SecurityGen2.CreateSecurity(out SecurityPerm2, out Security2)) { if(SecurityPerm2 == null) continue; SecurityPerm3 = (SecurityPermission)SecurityPerm1.Union(SecurityPerm2); SecurityPerm3 = SecurityPerm1.Union(SecurityPerm2); if(SecurityPerm3 == null) { Console.WriteLine("The union of " + Security1 + " and " + Security2 + " is null." ); } else { Console.WriteLine("The union of " + SecurityPerm1.Flags + " and " + SecurityPerm2.Flags + " = " + ((SecurityPermission)SecurityPerm3).Flags.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; SecurityPermissionFlag Security1,Security2; SecurityPermission SecurityPerm1,SecurityPerm2,SecurityPerm3; SecurityGenerator SecurityGen1 = new SecurityGenerator(); SecurityGenerator SecurityGen2 = new SecurityGenerator(); SecurityGen1.ResetIndex(); while(SecurityGen1.CreateSecurity(out SecurityPerm1, out Security1)) { if(SecurityPerm1 == null) continue; Console.WriteLine("**********************************************************\n"); SecurityGen2.ResetIndex(); while(SecurityGen2.CreateSecurity(out SecurityPerm2, out Security2)) { if(SecurityPerm2 == null) continue; SecurityPerm3 = (SecurityPermission)SecurityPerm1.Intersect(SecurityPerm2); if (SecurityPerm3 != null) { Console.WriteLine("The intersection of " + Security1 + " and " + Security2 + " = " + ((SecurityPermission)SecurityPerm3).Flags.ToString()); } else { Console.WriteLine("The intersection of " + Security1 + " and " + Security2 + " is null." ); } } } return returnValue; } //Copy creates and returns an identical copy of the current permission. private bool CopyDemo() { bool returnValue = true; SecurityPermissionFlag Security1; SecurityPermission SecurityPerm1,SecurityPerm2; SecurityGenerator SecurityGen1 = new SecurityGenerator(); SecurityGenerator SecurityGen2 = new SecurityGenerator(); SecurityGen1.ResetIndex(); while(SecurityGen1.CreateSecurity(out SecurityPerm1, out Security1)) { if(SecurityPerm1 == null) continue; SecurityGen2.ResetIndex(); Console.WriteLine("********************************************************\n"); try { SecurityPerm2 = (SecurityPermission)SecurityPerm1.Copy(); Console.WriteLine("Result of copy = " + SecurityPerm2.ToString()); } catch(Exception e) { Console.WriteLine("Copy failed :" + SecurityPerm1.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; SecurityPermissionFlag Security1; SecurityPermission SecurityPerm1,SecurityPerm2; SecurityGenerator SecurityGen1 = new SecurityGenerator(); SecurityGenerator SecurityGen2 = new SecurityGenerator(); SecurityGen1.ResetIndex(); while(SecurityGen1.CreateSecurity(out SecurityPerm1, out Security1)) { if(SecurityPerm1 == null) continue; Console.WriteLine("********************************************************\n"); SecurityGen2.ResetIndex(); try { SecurityPerm2= new SecurityPermission(PermissionState.None); SecurityPerm2.FromXml(SecurityPerm1.ToXml()); Console.WriteLine("Result of ToFromXml = " + SecurityPerm2.ToString()); } catch(Exception e) { Console.WriteLine("ToFromXml failed :" + SecurityPerm1.ToString() + e); continue; } } return returnValue; } // Invoke all demos. public bool runDemo() { bool returnCode = true; bool tempReturnCode; // Call the IsSubsetOf demo. tempReturnCode= IsSubsetOfDemo(); if(tempReturnCode)Console.Out.WriteLine("IsSubsetOf demo completed successfully."); else Console.Out.WriteLine("IsSubsetOf demo failed."); returnCode=tempReturnCode && returnCode; // Call the Union demo. tempReturnCode= UnionDemo(); if(tempReturnCode)Console.Out.WriteLine("Union demo completed successfully."); else Console.Out.WriteLine("Union demo failed."); returnCode=tempReturnCode && returnCode; // Call the Intersect demo. tempReturnCode= IntersectDemo(); if(tempReturnCode)Console.Out.WriteLine("Intersect demo completed successfully."); else Console.Out.WriteLine("Intersect demo failed."); returnCode=tempReturnCode && returnCode; // Call the Copy demo. tempReturnCode= CopyDemo(); if(tempReturnCode)Console.Out.WriteLine("Copy demo completed successfully."); else Console.Out.WriteLine("Copy demo failed."); returnCode=tempReturnCode && returnCode; // Call the ToFromXml demo. tempReturnCode= ToFromXmlDemo(); if(tempReturnCode)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 { SecurityPermissionDemo democase = new SecurityPermissionDemo(); bool returnCode = democase.runDemo(); if (returnCode) { Console.Out.WriteLine("SecurityPermission demo completed successfully."); Console.Out.WriteLine("Press the Enter key to exit."); string consoleInput = Console.ReadLine(); System.Environment.ExitCode = 100; } else { Console.Out.WriteLine("SecurityPermission 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("SecurityPermission 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 SecurityPermission objects. internal class SecurityGenerator { private SecurityPermissionFlag[] mySecurity = {SecurityPermissionFlag.AllFlags, SecurityPermissionFlag.Assertion, SecurityPermissionFlag.ControlAppDomain, SecurityPermissionFlag.ControlDomainPolicy, SecurityPermissionFlag.ControlEvidence, SecurityPermissionFlag.ControlPolicy, SecurityPermissionFlag.ControlPrincipal, SecurityPermissionFlag.ControlThread, SecurityPermissionFlag.Execution, SecurityPermissionFlag.Infrastructure, SecurityPermissionFlag.NoFlags, SecurityPermissionFlag.RemotingConfiguration, SecurityPermissionFlag.SerializationFormatter, SecurityPermissionFlag.SkipVerification, SecurityPermissionFlag.UnmanagedCode}; private int reflectionIndex = 0; public SecurityGenerator() { ResetIndex(); } public void ResetIndex() { reflectionIndex = 0; } // CreateSecurity creates a SecurityPermission object. public bool CreateSecurity(out SecurityPermission SecurityPerm, out SecurityPermissionFlag Security) { if(reflectionIndex >= mySecurity.Length) { SecurityPerm = new SecurityPermission(PermissionState.None); Security=SecurityPermissionFlag.NoFlags; reflectionIndex++; return false; } Security = mySecurity[reflectionIndex++]; try { SecurityPerm = new SecurityPermission(Security); return true; } catch(Exception e) { Console.WriteLine("Cannot create SecurityPermission: " + Security +" "+e); SecurityPerm = new SecurityPermission(PermissionState.None); Security=SecurityPermissionFlag.NoFlags; return true; } } } // End of SecurityGenerator. [C++] // This sample demonstrates the IsSubsetOf, Union, Intersect, Copy, ToXml and FromXml methods // of the SecurityPermission 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 SecurityPermission objects. private __gc class SecurityGenerator { private: SecurityPermissionFlag mySecurity[]; int reflectionIndex; public: SecurityGenerator() { SecurityPermissionFlag temp[] = {SecurityPermissionFlag::AllFlags, SecurityPermissionFlag::Assertion, SecurityPermissionFlag::ControlAppDomain, SecurityPermissionFlag::ControlDomainPolicy, SecurityPermissionFlag::ControlEvidence, SecurityPermissionFlag::ControlPolicy, SecurityPermissionFlag::ControlPrincipal, SecurityPermissionFlag::ControlThread, SecurityPermissionFlag::Execution, SecurityPermissionFlag::Infrastructure, SecurityPermissionFlag::NoFlags, SecurityPermissionFlag::RemotingConfiguration, SecurityPermissionFlag::SerializationFormatter, SecurityPermissionFlag::SkipVerification, SecurityPermissionFlag::UnmanagedCode}; mySecurity = temp; reflectionIndex = 0; ResetIndex(); } void ResetIndex() { reflectionIndex = 0; } // CreateSecurity creates a SecurityPermission object. bool CreateSecurity([Out] SecurityPermission** SecurityPerm, [Out] SecurityPermissionFlag* Security) { if(reflectionIndex >= mySecurity->Length) { *SecurityPerm = new SecurityPermission(PermissionState::None); *Security=SecurityPermissionFlag::NoFlags; reflectionIndex++; return false; } *Security = mySecurity[reflectionIndex++]; try { *SecurityPerm = new SecurityPermission(*Security); return true; } catch(Exception* e) { Console::WriteLine(S"Cannot create SecurityPermission: {0} {1}", __box(*Security), e); *SecurityPerm = new SecurityPermission(PermissionState::None); *Security=SecurityPermissionFlag::NoFlags; return true; } } }; // End of SecurityGenerator. public __gc class SecurityPermissionDemo { // IsSubsetOf determines whether the current permission is a subset of the specified permission. private: bool IsSubsetOfDemo() { bool returnValue = true; SecurityPermissionFlag Security1,Security2; SecurityPermission* SecurityPerm1; SecurityPermission* SecurityPerm2; SecurityGenerator* SecurityGen1 = new SecurityGenerator(); SecurityGenerator* SecurityGen2 = new SecurityGenerator(); SecurityGen1->ResetIndex(); while(SecurityGen1->CreateSecurity(&SecurityPerm1, &Security1)) { if(SecurityPerm1 == 0) continue; SecurityGen2->ResetIndex(); Console::WriteLine(S"********************************************************\n"); while(SecurityGen2->CreateSecurity(&SecurityPerm2, &Security2)) { if(SecurityPerm2 == 0) continue; try { if (SecurityPerm1->IsSubsetOf(SecurityPerm2)) { Console::WriteLine(S"{0} is a subset of {1}", __box(SecurityPerm1->Flags), __box(SecurityPerm2->Flags)); } else { Console::WriteLine(S"{0} is not a subset of {1}", __box(SecurityPerm1->Flags), __box(SecurityPerm2->Flags)); } } catch(Exception* e) { Console::WriteLine(S"An exception was thrown for subset :{0}\n{1}\n{2}", SecurityPerm1, SecurityPerm2, e); returnValue=false; } } } return returnValue; } // Union creates a new permission that is the union of the current permission and the specified permission. bool UnionDemo() { bool returnValue = true; SecurityPermissionFlag Security1,Security2; SecurityPermission* SecurityPerm1; SecurityPermission* SecurityPerm2; IPermission* SecurityPerm3; SecurityGenerator* SecurityGen1 = new SecurityGenerator(); SecurityGenerator* SecurityGen2 = new SecurityGenerator(); SecurityGen1->ResetIndex(); while(SecurityGen1->CreateSecurity(&SecurityPerm1, &Security1)) { if(SecurityPerm1 == 0) continue; Console::WriteLine(S"**********************************************************\n"); SecurityGen2->ResetIndex(); while(SecurityGen2->CreateSecurity(&SecurityPerm2, &Security2)) { if(SecurityPerm2 == 0) continue; SecurityPerm3 = dynamic_cast<SecurityPermission*>(SecurityPerm1->Union(SecurityPerm2)); SecurityPerm3 = SecurityPerm1->Union(SecurityPerm2); if(SecurityPerm3 == 0) { Console::WriteLine(S"The union of {0} and {1} is null.", __box(Security1), __box(Security2)); } else { Console::WriteLine(S"The union of {0} and {1} = {2}", __box(SecurityPerm1->Flags), __box(SecurityPerm2->Flags), __box((dynamic_cast<SecurityPermission*>(SecurityPerm3))->Flags)); } } } return returnValue; } // Intersect creates and returns a new permission that is the intersection of the current // permission and the permission specified. bool IntersectDemo() { bool returnValue = true; SecurityPermissionFlag Security1,Security2; SecurityPermission* SecurityPerm1; SecurityPermission* SecurityPerm2; SecurityPermission* SecurityPerm3; SecurityGenerator* SecurityGen1 = new SecurityGenerator(); SecurityGenerator* SecurityGen2 = new SecurityGenerator(); SecurityGen1->ResetIndex(); while(SecurityGen1->CreateSecurity(&SecurityPerm1, &Security1)) { if(SecurityPerm1 == 0) continue; Console::WriteLine(S"**********************************************************\n"); SecurityGen2->ResetIndex(); while(SecurityGen2->CreateSecurity(&SecurityPerm2, &Security2)) { if(SecurityPerm2 == 0) continue; SecurityPerm3 = dynamic_cast<SecurityPermission*>(SecurityPerm1->Intersect(SecurityPerm2)); if (SecurityPerm3 != 0) { Console::WriteLine(S"The intersection of {0} and {1} = {2}", __box(Security1), __box(Security2), __box((dynamic_cast<SecurityPermission*>(SecurityPerm3))->Flags)); } else { Console::WriteLine(S"The intersection of {0} and {1} is null.", __box(Security1), __box(Security2)); } } } return returnValue; } //Copy creates and returns an identical copy of the current permission. bool CopyDemo() { bool returnValue = true; SecurityPermissionFlag Security1; SecurityPermission* SecurityPerm1; SecurityPermission* SecurityPerm2; SecurityGenerator* SecurityGen1 = new SecurityGenerator(); SecurityGenerator* SecurityGen2 = new SecurityGenerator(); SecurityGen1->ResetIndex(); while(SecurityGen1->CreateSecurity(&SecurityPerm1, &Security1)) { if(SecurityPerm1 == 0) continue; SecurityGen2->ResetIndex(); Console::WriteLine(S"********************************************************\n"); try { SecurityPerm2 = dynamic_cast<SecurityPermission*>(SecurityPerm1->Copy()); Console::WriteLine(S"Result of copy = {0}", SecurityPerm2); } catch(Exception* e) { Console::WriteLine(S"Copy failed :{0}{1}", SecurityPerm1, 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. bool ToFromXmlDemo() { bool returnValue = true; SecurityPermissionFlag Security1; SecurityPermission* SecurityPerm1; SecurityPermission* SecurityPerm2; SecurityGenerator* SecurityGen1 = new SecurityGenerator(); SecurityGenerator* SecurityGen2 = new SecurityGenerator(); SecurityGen1->ResetIndex(); while(SecurityGen1->CreateSecurity(&SecurityPerm1, &Security1)) { if(SecurityPerm1 == 0) continue; Console::WriteLine(S"********************************************************\n"); SecurityGen2->ResetIndex(); try { SecurityPerm2= new SecurityPermission(PermissionState::None); SecurityPerm2->FromXml(SecurityPerm1->ToXml()); Console::WriteLine(S"Result of ToFromXml = {0}", SecurityPerm2); } catch(Exception* e) { Console::WriteLine(S"ToFromXml failed :{0}{1}", SecurityPerm1, e); continue; } } return returnValue; } // Invoke all demos. public: bool runDemo() { bool returnCode = true; bool tempReturnCode; // Call the IsSubsetOf demo. tempReturnCode= IsSubsetOfDemo(); if(tempReturnCode)Console::Out->WriteLine(S"IsSubsetOf demo completed successfully."); else Console::Out->WriteLine(S"IsSubsetOf demo failed."); returnCode=tempReturnCode && returnCode; // Call the Union demo. tempReturnCode= UnionDemo(); if(tempReturnCode)Console::Out->WriteLine(S"Union demo completed successfully."); else Console::Out->WriteLine(S"Union demo failed."); returnCode=tempReturnCode && returnCode; // Call the Intersect demo. tempReturnCode= IntersectDemo(); if(tempReturnCode)Console::Out->WriteLine(S"Intersect demo completed successfully."); else Console::Out->WriteLine(S"Intersect demo failed."); returnCode=tempReturnCode && returnCode; // Call the Copy demo. tempReturnCode= CopyDemo(); if(tempReturnCode)Console::Out->WriteLine(S"Copy demo completed successfully."); else Console::Out->WriteLine(S"Copy demo failed."); returnCode=tempReturnCode && returnCode; // Call the ToFromXml demo. tempReturnCode= ToFromXmlDemo(); if(tempReturnCode)Console::Out->WriteLine(S"ToFromXml demo completed successfully."); else Console::Out->WriteLine(S"ToFromXml demo failed."); returnCode=tempReturnCode && returnCode; return ( returnCode ); } }; // Test harness. int main() { try { SecurityPermissionDemo* democase = new SecurityPermissionDemo(); bool returnCode = democase->runDemo(); if (returnCode) { Console::Out->WriteLine(S"SecurityPermission demo completed successfully."); Console::Out->WriteLine(S"Press the Enter key to exit."); String* consoleInput = Console::ReadLine(); System::Environment::ExitCode = 100; } else { Console::Out->WriteLine(S"SecurityPermission demo failed."); Console::Out->WriteLine(S"Press the Enter key to exit."); String* consoleInput = Console::ReadLine(); System::Environment::ExitCode = 101; } } catch(Exception* e) { Console::Out->WriteLine(S"SecurityPermission demo failed."); Console::WriteLine(e); Console::Out->WriteLine(S"Press the Enter key to exit."); String* consoleInput = 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
SecurityPermission Members | System.Security.Permissions Namespace | Permissions | Requesting Permissions | SecurityPermissionAttribute | SecurityPermissionFlag