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Allow .code extraction for .3ds files

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This commit is contained in:
d0k3 2018-04-17 00:48:50 +02:00
parent 1a9bf41c9d
commit 2e07189a1b
2 changed files with 14 additions and 4 deletions
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2
arm9/source/filesys/filetype.h
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@ -55,7 +55,7 @@
#define FTYPE_RENAMABLE(tp) (tp&(GAME_NCCH|GAME_NCSD|GAME_CIA|GAME_NDS|GAME_GBA))
#define FTYPE_TRANSFERABLE(tp) ((u64) (tp&(IMG_FAT|FLAG_CTR)) == (u64) (IMG_FAT|FLAG_CTR))
#define FTYPE_NCSDFIXABLE(tp) (tp&(HDR_NAND|NOIMG_NAND))
#define FTYPE_HASCODE(tp) ((u64) (tp&(GAME_NCCH|FLAG_CXI)) == (u64) (GAME_NCCH|FLAG_CXI))
#define FTYPE_HASCODE(tp) (((u64) (tp&(GAME_NCCH|FLAG_CXI)) == (u64) (GAME_NCCH|FLAG_CXI))|(tp&GAME_NCSD))
#define FTYPE_ISDISADIFF(tp) (tp&(SYS_DIFF|SYS_DISA))
#define FTYPE_RESTORABLE(tp) (tp&(IMG_NAND))
#define FTYPE_EBACKUP(tp) (tp&(IMG_NAND))

16
arm9/source/utils/gameutil.c
View File

@ -1498,16 +1498,26 @@ u32 DumpCxiSrlFromTmdFile(const char* path) {
}
u32 ExtractCodeFromCxiFile(const char* path, const char* path_out, char* extstr) {
u64 filetype = IdentifyFileType(path);
char dest[256];
if (!path_out && (fvx_rmkdir(OUTPUT_PATH) != FR_OK)) return 1;
strncpy(dest, path_out ? path_out : OUTPUT_PATH, 256);
if (!CheckWritePermissions(dest)) return 1;
// NCSD handling
u32 ncch_offset = 0;
if (filetype & GAME_NCSD) {
NcsdHeader ncsd;
if (LoadNcsdHeader(&ncsd, path) == 0)
ncch_offset = ncsd.partitions[0].offset * NCSD_MEDIA_UNIT;
else return 1;
}
// load all required headers
NcchHeader ncch;
NcchExtHeader exthdr;
ExeFsHeader exefs;
if (LoadNcchHeaders(&ncch, &exthdr, &exefs, path, 0) != 0) return 1;
if (LoadNcchHeaders(&ncch, &exthdr, &exefs, path, ncch_offset) != 0) return 1;
// find ".code" or ".firm" inside the ExeFS header
u32 code_size = 0;
@ -1526,7 +1536,7 @@ u32 ExtractCodeFromCxiFile(const char* path, const char* path_out, char* extstr)
if (exthdr.flag & 0x1) {
u8 footer[8];
if (code_size < 8) return 1;
if ((fvx_qread(path, footer, code_offset + code_size - 8, 8, NULL) != FR_OK) ||
if ((fvx_qread(path, footer, ncch_offset + code_offset + code_size - 8, 8, NULL) != FR_OK) ||
(DecryptNcch(footer, code_offset + code_size - 8, 8, &ncch, &exefs) != 0))
return 1;
u32 unc_size = GetCodeLzssUncompressedSize(footer, code_size);
@ -1541,7 +1551,7 @@ u32 ExtractCodeFromCxiFile(const char* path, const char* path_out, char* extstr)
}
// load .code
if ((fvx_qread(path, code, code_offset, code_size, NULL) != FR_OK) ||
if ((fvx_qread(path, code, ncch_offset + code_offset, code_size, NULL) != FR_OK) ||
(DecryptNcch(code, code_offset, code_size, &ncch, &exefs) != 0)) {
free(code);
return 1;