3ds FRD unofficial server patch

This patches the 3ds FRD system module to make building and testing unofficial 3ds game servers easier.

Why does this exist?

Building and testing unofficial servers for 3ds online play has a few issues:

• With the 3ds friend services still operational, it wouldn't be good to use unofficial friend services since it would be easy to get desynchronized from the official services
• 3ds users have a hidden password that is used to go online. It would be bad to rely on a user's real password for unofficial servers for obvious security reaons
• NASC uses specific root CAs that don't work with any random server

This patch does the following things:

• Use official servers and the 3ds user's real password for friend services
• Use unofficial servers and a fake password for games
• Use a custom root CA so TLS doesn't have to be disabled when talking with the NASC server

Building and installing

Make sure to have armips and flips installed or an image built from the provided dockerfile

1. Extract the code.bin from the frd sysmodule (0004013000003202) and put it in this directory
2. Run make -e PASSWORD="<password>" -e NASC_URL="<nasc url>" -e ROOT_CA="<cert file>" -e ROOT_CA_SIZE=<cert size>
3. Copy the resulting code.ips to /luma/titles/0004013000003202/code.ips

Building with docker

1. docker build -t patch-builder .
2. docker run --rm -w /app -v $(pwd):/app patch-builder make -e PASSWORD="<password>" -e NASC_URL="<nasc url>" -e ROOT_CA="<cert file>" -e ROOT_CA_SIZE=<cert size>