/// <summary>
/// Removes the "Allow" read permissions, and adds the "Deny" read permission
/// on the HOSTS file. If the Hosts file cannot be locked, the exception error
/// will be logged in the App error log
/// </summary>
public bool Lock()
{
// Make sure we have a security object
if (Security == null)
{
return(false);
}
// Donot allow Read for the Everyone Sid. This prevents the BF2 client from reading the hosts file
Security.RemoveAccessRule(new FileSystemAccessRule(WorldSid, FileSystemRights.ReadData, AccessControlType.Allow));
Security.AddAccessRule(new FileSystemAccessRule(WorldSid, FileSystemRights.ReadData, AccessControlType.Deny));
// Try and set the new access control
try
{
HostFile.SetAccessControl(Security);
IsLocked = true;
return(true);
}
catch (Exception e)
{
TraceLog.TraceError("Unable to REMOVE the Readonly rule on Hosts File: " + e.Message);
LastException = e;
return(false);
}
}
/// <summary>
/// Removes the "Deny" read permissions, and adds the "Allow" read permission
/// on the HOSTS file. If the Hosts file cannot be unlocked, the exception error
/// will be logged in the App error log
/// </summary>
public bool UnLock()
{
// Make sure we have a security object
if (Security == null)
{
return(false);
}
// Allow ReadData
Security.RemoveAccessRule(new FileSystemAccessRule(WorldSid, FileSystemRights.ReadData, AccessControlType.Deny));
Security.AddAccessRule(new FileSystemAccessRule(WorldSid, FileSystemRights.ReadData, AccessControlType.Allow));
// Try and set the new access control
try
{
HostFile.SetAccessControl(Security);
IsLocked = false;
return(true);
}
catch (Exception e)
{
TraceLog.TraceError("Unable to REMOVE the Readonly rule on Hosts File: " + e.Message);
LastException = e;
return(false);
}
}
