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Enable browsing the ExeFS dir

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This commit is contained in:
d0k3 2016-11-28 23:38:54 +01:00
parent f0492ad02d
commit 34b58e979a
2 changed files with 36 additions and 5 deletions
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2
source/game/ncch.h
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@ -7,6 +7,8 @@
#define NCCH_EXTHDR_SIZE 0x800 // NCCH header says 0x400, which is not the full thing
#define NCCH_EXTHDR_OFFSET 0x200
#define NCCH_ENCRYPTED(ncch) (!(ncch->flags[7] & 0x04))
// see: https://www.3dbrew.org/wiki/NCCH/Extended_Header
// very limited, contains only required stuff
typedef struct {

39
source/virtual/vgame.c
View File

@ -45,6 +45,9 @@
#define NAME_NCCH_LOGO "logo.bin"
#define NAME_NCCH_EXEFS "exefs.bin"
#define NAME_NCCH_ROMFS "romfs.bin"
#define NAME_NCCH_EXEFSDIR "exefs"
#define NAME_NCCH_ROMFSDIR "romfs"
static u32 vgame_type = 0;
static u32 base_vdir = 0;
@ -67,6 +70,25 @@ static NcsdHeader* ncsd = (NcsdHeader*) (VGAME_BUFFER + 0xF3000); // 512 byte re
static NcchHeader* ncch = (NcchHeader*) (VGAME_BUFFER + 0xF3200); // 512 byte reserved
static ExeFsHeader* exefs = (ExeFsHeader*) (VGAME_BUFFER + 0xF3400); // 512 byte reserved
bool BuildVGameExeFsDir(void) {
VirtualFile* templates = templates_exefs;
u32 n = 0;
for (u32 i = 0; i < 10; i++) {
ExeFsFileHeader* file = exefs->files + i;
if (file->size == 0) continue;
strncpy(templates[n].name, file->name, 32);
templates[n].offset = offset_exefs + sizeof(ExeFsHeader) + file->offset;
templates[n].size = file->size;
templates[n].keyslot = 0xFF; // needs to be handled
templates[n].flags = 0;
n++;
}
n_templates_exefs = n;
return true;
}
bool BuildVGameNcchDir(void) {
VirtualFile* templates = templates_ncch;
u32 n = 0;
@ -85,7 +107,7 @@ bool BuildVGameNcchDir(void) {
templates[n].offset = offset_ncch + NCCH_EXTHDR_OFFSET;
templates[n].size = NCCH_EXTHDR_SIZE;
templates[n].keyslot = 0xFF; // crypto ?
templates[n].flags = 0;
templates[n].flags = VFLAG_EXTHDR;
n++;
}
@ -114,9 +136,15 @@ bool BuildVGameNcchDir(void) {
strncpy(templates[n].name, NAME_NCCH_EXEFS, 32);
templates[n].offset = offset_ncch + (ncch->offset_exefs * NCCH_MEDIA_UNIT);
templates[n].size = ncch->size_exefs * NCCH_MEDIA_UNIT;
templates[n].keyslot = 0xFF;
templates[n].flags = 0;
templates[n].keyslot = 0xFF; // crypto ?
templates[n].flags = VFLAG_EXEFS;
n++;
if (!NCCH_ENCRYPTED(ncch)) {
memcpy(templates + n, templates + n - 1, sizeof(VirtualFile));
strncpy(templates[n].name, NAME_NCCH_EXEFSDIR, 32);
templates[n].flags |= VFLAG_DIR;
n++;
}
}
// romfs
@ -124,8 +152,8 @@ bool BuildVGameNcchDir(void) {
strncpy(templates[n].name, NAME_NCCH_ROMFS, 32);
templates[n].offset = offset_ncch + (ncch->offset_romfs * NCCH_MEDIA_UNIT);
templates[n].size = ncch->size_romfs * NCCH_MEDIA_UNIT;
templates[n].keyslot = 0xFF;
templates[n].flags = 0;
templates[n].keyslot = 0xFF; // crypto ?
templates[n].flags = VFLAG_ROMFS;
n++;
}
@ -357,6 +385,7 @@ bool OpenVGameDir(VirtualDir* vdir, VirtualFile* ventry) {
(ValidateExeFsHeader(exefs, ncch->size_exefs * NCCH_MEDIA_UNIT) != 0))
return false;
offset_exefs = vdir->offset;
if (!BuildVGameExeFsDir()) return false;
}
}