Question

I asked a while ago how to restrict plugins access ( I want to prevent them from writing to the disk or network ) and i was told to use AppDomain. I have searched and tried and failed on how to get this working.

Can anyone provide some information so i can get started, simply put make a AppDomain that does not allows writing to the file or network.

Answer 1

I guess this is what you need, if I understand correctly your point.

System.Security.PermissionSet ps = 
    new System.Security.PermissionSet(System.Security.Permissions.PermissionState.None);
ps.AddPermission(new System.Security.Permissions.FileIOPermission(System.Security.Permissions.FileIOPermissionAccess.NoAccess, "C:\\"));
System.Security.Policy.PolicyLevel pl = System.Security.Policy.PolicyLevel.CreateAppDomainLevel();
pl.RootCodeGroup.PolicyStatement = new System.Security.Policy.PolicyStatement(ps);
AppDomain.CurrentDomain.SetAppDomainPolicy(pl);
System.Reflection.Assembly myPluginAssembly = AppDomain.CurrentDomain.Load("MyPluginAssembly");

Is this more precisely what you meant?

Notice that you may provide an array of string containg the paths where you don’t want the plugin to have access. You may provide if when initializing the new instance of FileIOPermission class.

Let me know if this helps. 🙂