Hi Pierre,
Could you not just check all the mac addresses returned? If one matches
then you are good? If the network card is removed/changed I guess they
need to get a new licence.
Steve
Pierre Jasmin wrote:
All OS have a way to enumerate all mac addresses (sometimes there is
6, and eth0 can vary over time including if you have two ports by just
plugging the cable in other port) for you to strcmp
The other scheme I have seen is to use disk ID, this is more common
for temp licenses then permanent one though.
Pierre
On 10/23/2012 9:15 AM, Steve Booth wrote:
Mike,
If you’re on a commercial workstation, and are not using a plug-in
network adapter card, then the MAC address will be unique, although
some (most?) workstations have not one, but **two** network
interfaces, so there will actually be two distinct MAC addresses. If,
however, you’re using a plug-in card, you run the risk of crashing
your software if the network hardware is upgraded.
It is also possible, on Intel CPUs at least (not sure about AMD) to
obtain the CPU serial number. Microsoft has the ‘__cpuid’ macro that
generates in-line, the MASM to obtain this:
http://msdn.microsoft.com/en-us/library/hskdteyh%28v=vs.100%29.aspx
That ties your software to a specific CPU (assuming CPU
identification is enabled in the BIOS), and is much more reliable.
Steve
*From:* [email protected]
[mailto:[email protected]] *On Behalf Of
*Stephen Newbold
*Sent:* Tuesday, October 23, 2012 1:03 AM
*To:* Nuke plug-in development discussion
*Subject:* Re: [Nuke-dev] Plugin Licencing
Hi Steve,
I can see how this would work when tying the plugin to a specific
domain but how would you approach locking the plugin to a single
machine? Use the MAC address?
Steve
Steve Booth wrote:
Mike,
How you do it depends on the OS platform you’re using. Generally
speaking, what I do is to get the domain name from the network stack
(or just using the Win32 API under Windows), and compare it to a
const string. Thus, if you’re working within, say, Disney Animation,
and the compositing domain is comp.disney.com, for example, just
error() if the domain does not match this string.
Hope that helps.
Steve
--
Stephen Newbold
Compositing Lead - Film
MPC
127 Wardour Street
Soho, London, W1F 0NL
Main - + 44 (0) 20 7434 3100
www.moving-picture.com
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