private static void CallUnmanagedCodeWithoutPermission() { // Create a security permission object to describe the // UnmanagedCode permission: SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); // Deny the UnmanagedCode from our current set of permissions. // Any method that is called on this thread until this method // returns will be denied access to unmanaged code. // Even though the CallUnmanagedCodeWithPermission method // is called from a stack frame that already // calls Assert for unmanaged code, you still cannot call native // code. Because you use Deny here, the permission gets // overwritten. perm.Deny(); try { Console.WriteLine("Attempting to call unmanaged code without permission."); NativeMethods.puts("Hello World!"); NativeMethods._flushall(); Console.WriteLine("Called unmanaged code without permission. Whoops!"); } catch (SecurityException) { Console.WriteLine("Caught Security Exception attempting to call unmanaged code."); } }
public static void Main() { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); // The method itself is attached with the security permission Deny // for unmanaged code, which will override the Assert permission in // this stack frame. However, because you are using // SuppressUnmanagedCodeSecurityAttribute, you can still call the // unmanaged methods successfully. // The code should use other security checks to ensure that you // don't incur a security hole. perm.Assert(); CallUnmanagedCodeWithoutPermission(); // The method itself is attached with the security permission // Assert for unmanaged code, which will override the Deny // permission in this stack frame. Because you are using // SuppressUnmanagedCodeSecurityAttribute, you can call the // unmanaged methods successfully. // The SuppressUnmanagedCodeSecurityAttribute will let you succeed, // even if you don't have a permission. perm.Deny(); CallUnmanagedCodeWithPermission(); }
private Object Deserialize(SoapFormatter formatter, MemoryStream stream) { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter); perm.Deny(); return(formatter.Deserialize(stream)); }
private void ConstructOM() { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter); perm.Deny(); ObjectManager manager = new ObjectManager(null, new StreamingContext(StreamingContextStates.All)); }
private void Serialize(SoapFormatter formatter, MemoryStream stream, Object value) { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter); perm.Deny(); formatter.Serialize(stream, value); }
private static void CallUnmanagedCodeWithoutPermission() { // Create a security permission object to describe the // UnmanagedCode permission: SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); // Deny the UnmanagedCode from our current set of permissions. // Any method that is called on this thread until this method // returns will be denied access to unmanaged code. // Even though the CallUnmanagedCodeWithPermission method // is called from a stack frame that already // calls Assert for unmanaged code, you still cannot call native // code. Because you use Deny here, the permission gets // overwritten. perm.Deny(); try { Console.WriteLine("Attempting to call unmanaged code without permission."); NativeMethods.puts("Hello World!"); NativeMethods._flushall(); Console.WriteLine("Called unmanaged code without permission. Whoops!"); } catch (SecurityException) { Console.WriteLine("Caught Security Exception attempting to call unmanaged code."); } }
public static void Main() { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); // The method itself is attached with the security permission Deny // for unmanaged code, which will override the Assert permission in // this stack frame. However, because you are using // SuppressUnmanagedCodeSecurityAttribute, you can still call the // unmanaged methods successfully. // The code should use other security checks to ensure that you // don't incur a security hole. perm.Assert(); CallUnmanagedCodeWithoutPermission(); // The method itself is attached with the security permission // Assert for unmanaged code, which will override the Deny // permission in this stack frame. Because you are using // SuppressUnmanagedCodeSecurityAttribute, you can call the // unmanaged methods successfully. // The SuppressUnmanagedCodeSecurityAttribute will let you succeed, // even if you don't have a permission. perm.Deny(); CallUnmanagedCodeWithPermission(); }
public static void Main() { // The method itself will call the security permission Deny // for unmanaged code, which will override the Assert permission // in this stack frame. SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); perm.Assert(); CallUnmanagedCodeWithoutPermission(); // The method itself will call the security permission Assert // for unmanaged code, which will override the Deny permission in // this stack frame. perm.Deny(); CallUnmanagedCodeWithPermission(); }
public static void Main() { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); // The method itself is attached with the security permission // Deny for unmanaged code, which will override // the Assert permission in this stack frame. perm.Assert(); CallUnmanagedCodeWithoutPermission(); // The method itself is attached with the security permission // Assert for unmanaged code, which will override the Deny // permission in this stack frame. perm.Deny(); CallUnmanagedCodeWithPermission(); }
public static void Main() { // The method itself will call the security permission Deny // for unmanaged code, which will override the Assert permission // in this stack frame. SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); perm.Assert(); CallUnmanagedCodeWithoutPermission(); // The method itself will call the security permission Assert // for unmanaged code, which will override the Deny permission in // this stack frame. perm.Deny(); CallUnmanagedCodeWithPermission(); }
public static void Main() { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode); // The method itself is attached with the security permission // Deny for unmanaged code, which will override // the Assert permission in this stack frame. perm.Assert(); CallUnmanagedCodeWithoutPermission(); // The method itself is attached with the security permission // Assert for unmanaged code, which will override the Deny // permission in this stack frame. perm.Deny(); CallUnmanagedCodeWithPermission(); }
private void ConstructOM() { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter); perm.Deny(); ObjectManager manager = new ObjectManager(null, new StreamingContext(StreamingContextStates.All)); }
private Object Deserialize(SoapFormatter formatter, MemoryStream stream) { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter); perm.Deny(); return formatter.Deserialize(stream); }
private void Serialize(SoapFormatter formatter, MemoryStream stream, Object value) { SecurityPermission perm = new SecurityPermission(SecurityPermissionFlag.SerializationFormatter); perm.Deny(); formatter.Serialize(stream, value); }