I am fully aware of the open source factor and that in each open grid
everything can be changed, which is why one always needs backend
function to make sure no fals information is passed on to the central
service. One can however filter 99% of the fals data in the local sim
which helps the central service because it does not need to process
every single plausability checks. In a multi grid environment with
closed grids we even have a lower chance of false data beeing passed
than in a open grid only environment.
We have the same situations in opensim were the simulator often does
some local plausability checks before it send data to the gridservers.
The gridservers again do a plausability check combined with other
methods which are not available on the local sim. Only if all steps are
plausable the data gets processed further.
Anyway, I added a new patch for llDetectedType were NPCs always return
NPC and useing OS_NPC_SENSE_AS_AGENT will returns AGENT + NPC. I think
that is an acceptable compromize... I also added an example script were
the true NPC detection always makes sense ;)
Am 11.07.2012 02:01, schrieb Justin Clark-Casey:
Argus, if your system relies on always reliably identifying unique
avatars then that is simply not possible in any OpenSimulator
environment where simulators are controlled by third parties or where
hypergrid travel is allowed.
Even if OS_NPC_SENSE_AS_AGENT did not exist, then people would be able
to compile a version of the code that did have that functionality.
This is not about ideology - it's about what is physically possible!
Equally, it is perfectly possible to create duplicate HG details -
anything can be put in the agent data that comes from a foreign grid
([email protected] or whatever). You cannot rely on these to be
unique either.
Without any central authority (like DNS, the secure certificate
infrastructure of something like Bitcoin block chains) it is simply
not possible to uniquely identify avatars.
I don't see this as much different from the web where one has to get
people to create unique accounts with passwords in order to identify
them later. Such a thing has to be done in some authority system
outside of OpenSimulator itself.
If your point is that without OS_NPC_SENSE_AS_AGENT then the vast
majority of systems would always present NPCs as NPCs (rather than
agents) then I would agree. In fact, in practice most people won't
use OS_NPC_SENSE_AS_AGENT anyway as it's the option rather than the
default. But you cannot rely on uniquely identifying avatars on any
environment outside those that you directly control.
On a minor note, script functions that don't make any sense for NPCs
should behave as if the UUID they received did not relate to a valid
entity for that function.
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