Hello. What I am looking for is a tool that I can use on my server so a player with the vanilla client can connect to the server normally, but if the player has Minecraft Forge installed, they have the option to go through a portal or something and enter a modded world with Forge.
Is this possible with current 1.5 code? I understand this would involve having a custom server jar that could handle the players logging in with and without forge.
I found something exactly like this for 1.2.5 but it was never updated.
Something like this would be perfect for my server and I would really appreciate if someone could inform me of an existing tool or if you are a sufficient coder, make me something like it (I know something like this isn't easy).
Thanks!
Edit: Here is the old mod that does what I want but in 1.2.5: http://www.mcportcentral.co.za/index.php?topic=929.0