Automatic title ID fetch and Monster Hunter 4 Ultimate support

meladroit / svdt

tdvs, but backwards (whatever that means)

ISC License

101 stars 15 forks source link

Automatic title ID fetch and Monster Hunter 4 Ultimate support #8

Closed suloku closed 9 years ago

suloku commented 9 years ago

main.c:

Bugfix: scrolling filelist had one extra entry and return to previous folder (..) was still active even though a file takes offset 1 when list scrolls.
Automatically fetch title ID with APT_GetProgramID() (requires modified ctrulib, hope it gets added to ctrulib soon). For now it just sets title selector to the running title ID.
Version jump to 0.11

secure_values.c

reverted change to string "savedata.bin" which I changed thinking it was from SSB.
added support for Monster Hunter 4 Ultimate secure value patching, which uses blowfish encryption (blowfish.c, blowfish.h, mh4u.c and mh4u.h). Uses Paul Kocher's Blowfish C implementation.

suloku commented 9 years ago

Still need to find some testers for MH4U, since I tested it by manually writing the files to SSB demo save filesystem and using its product code. As far as decrypting, changing secure value, recalculating checksum and recrypting goes it works just fine.

3dsx is included because ctrulib doesn't have APT_GetProgramID() yet, I'm gonna throw the pull request now.

meladroit commented 9 years ago

Sounds like really good progress! I don't know how responsive the ctrulib maintainers are, but is it possible to temporarily add code for APT_GetProgramID somewhere in the svdt repo itself (much in the same way that svdt has a few extra FS:USER functions in filesystem.h ...)?

suloku commented 9 years ago

Oh, didn't think of that, but I don't see why it wouldn't be added to ctrulib though. The pull request is already made, let's give it a couple days. But also, I guess there's no harm in adding it to svdt and removing it if it gets added; should I make a separate file for that or include it in main.c?

meladroit commented 9 years ago

Actually, forget what I said. I think you'd have to duplicate apt.* entirely (unless there's a way to steal the APT:U handle, which there probably isn't), and that's just too much of a pain.

I've pulled most of this in manually, but I'll wait for ctrulib to pull this in before I post a new release, so that I can check properly that this builds. (The MH4U stuff complains about types, but it still builds, I suppose.)

suloku commented 9 years ago

Yes, it is blowfish code what gives warnings, but works fine. I guess casting could be used to get rid of those.