[1.7.10] Get the CheckSum of the Client

[Kurimatzu]

I'm trying to do a check between the client and the server.

The client sends a PacketPlayLoad to the server verify the .jar.

 

However, I'm in trouble, get the client jar directory.

 

More or less like this:

 

File f = new File (Minecraft. getMinecraftDir (), "versions/<version_here >/<version_here>.jar");

 

However, how to know which version performed by the client?

Which profile, is selected to open the client?

 

[LexManos]

You don't.

1) 1.7.10 modding is dead, move on

2) You NEVER trust the client.

[Kurimatzu]

Yes, I'm going to do that for several versions.

 

In a more recent version (1.10) is that possible? Get the .jar directory of client?

[Ernio]

There is no point in what you are trying to do... JAR file of MC can be left unmodified and have correct CheckSum - yet, client can be modified. Forge itself isn't even in JAR, not to mention any other possible mods or coremods.

 

In simpler words: "Verifying JAR" is impossible.

[Draco18s]

public int getCheckSum() {
    return "0xF239AFB520983D20978C290FC9"; //hax
}