[addons_zz]

Originally Posted by HamletEagle IIRC, the license allow you to do anything with the source code if you have it, so Dias permission is not needed.

Yes, the GPL does it. However was said people can request a special permission.

Originally Posted by devicenull If you would like to make your plugin exempted from the GPL rule, please contact us.

Looking the code provided, there was any license explicit. On USA law, it states copyrighted work by 'Dias' as the author stated on the file. However, were stated here that:

Originally Posted by devicenull The HLSDK EULA mandates that nothing linked to the SDK can be used for commercial purposes, and Small plugins are not linked.

Then or Dias requested a permission to fully use his working as copyrighted and under his fully control, or he did nothing and the source is by under the GPL licence.

Moreover, from my understanding of this phrase above: "and Small plugins are not linked." It states that every 'normal or big (not small)' plugins source code are by default not copyrighted and then he must not to have explicit permission from 'Dias' (as it is a small plugin source code), unless the small plugin source code had a GPL licence statement, as there are on some plugins around here. But there is not any GPL license statement on the source provided, so he can share despite 'Dias' authorized it, or it is even considered fair use or a big/normal plugin.

So beyond that, mostly only remains one question:

Originally Posted by KliPPy Are you able to support these plugins?

Bibliography used:

1. What is a Copyright?
2. Public copyright license
3. Read before posting new plugins. - Updated 9-5-14
4. COPYRIGHT LICENSES AND ASSIGNMENTS
5. GNU General Public License
6. Fair use