I've been provided a SourceMod plugin for a community game server. I was provided the compiled plugin, but not the source code. The license and explanation provided describes all SourceMod plugins as derivatives, meaning I should also receive a copy of the source.
How does one enforce such a requirement?
To be clearer, this is not about the SourceMod source code. That is available at the links I provided. This is about source code from the derived plugins made by a third party. The plugin is not listed on the SourceMod page, thus the source code is not available via their forums.