Possible Idea for More Accurate DLC Dumping

[RoboFox83]

I wanted to break this off as an idea, I threw it in an issue I had (which ended up being something you already fixed).

You said you may look into it further and I did some more research and testing. I just wanted to provide my findings .. hoping it might be of some use.

Summary of possible enhancements:

• Accurate/original Icons dumping
• Accurate/original param.sfo dumping, so accurate titles, content_id, and so on
• Creating a dump that provides you everything you need making repackage as fpkg DLC easier
• A possible way of dumping DLC without extra data (Disc version DLC that's an unlocker)
• A very rough idea around dumping DLC without extra data that's not from a disc

DLC with Extra Data

• I only have one example in my collection I ripped.. so if anyone else has extra data DLCs and can help confirm that would be great. Not sure if this is true for Digital Content as well
• It appears DLCs with extra data stores the package under /user/add/content/{CUSA#####}/{truncated_dlc_title}/ac.pkg
• Where DLC title is UP0082-CUSA08479_00-BTS0000000000002-ac the last folder would be BTS0000000000002
• 
• Alternative location for this is off the disc /mnt/disc/addcont/{CUSA#####}/{truncated_dlc_title}/ac.pkg as well.
• I suggest maybe adding dumping this ac.pkg (icon0.png and param.sfo to sce_sys folder) as part of the DLC Dump process

DLC without Extra Data (Disc Version DLC)

• This data currently doesn't get dump by the tool. So, maybe try this if no DLC folders are found... or check if a disc is inserted and compare to the folders dumped with extra data. If extra DLC exists follow this method to dump files needed to make an unlocker DLC.
• I have 3 discs with this type of DLC and the ac.pkg doens't appear to be copied to the PS4 like it does with DLC that has extra data.
• Though I found from the disc itself it has ac.pkg stored in /mnt/disc/addcont/{CUSA#####}/{Ptruncated_dlc_title}/ac.pkg
• 
• I was able to dump the icon and param.sfo from this and create an unlocker DLC with it.

DLC without Extra Data (Digital Content)

• I don't have any content like this, so this is all theory
• If no Extra Data DLC exists and no disc is insert.. maybe do this method.
• Read from addcont.db, there might be enough data to build a param.sfo?
• 
• The icon can be found under /user/appmeta/addcont/{CUSA#####}/{truncated_dlc_title}/
• Create a folder use the dir_name, create a sce_sys folder, place the generated param.sfo and icon (pngs) .. that's all that's needed for a unlocker DLC.. so

Sorry this turned into a book, but again I hope this is helpful and might trigger some ideas for your dumper script, I really love it using it and it's saved me a ton of time dumping my games.