SRCDS OR HLDS Code Modification

[DF-Beyond-Devil]

Hi,

I was wondering if it is possible to edit SRCDS or HLDS code itself, is the code open source? If not is there still a way to edit / add on stuff? Would that be legal?

Just some questions I have...

[Drocona]

The actual SRCDS and HLDS are not open source, it's owned by VALVe and I'm pretty sure it's "illegal" to do any reverse engineering or modifying.
VALVe has added the option to edit almost anything by the Valve Server Plugin interface, that's all we got

[recon0]

You could make a MOD.

[Mooga]

I'm not sure, but part of the code is probably released for third-party mods. However, but like all mods, this isn't the full code, just part of it. It wouldn't work for your standard games.