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Added ability to extract uncompressed .code

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This commit is contained in:
d0k3 2017-09-08 03:12:04 +02:00
parent f12dcfda4c
commit a6a15eb70d
10 changed files with 147 additions and 14 deletions
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1
source/common/ui.c
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@ -701,6 +701,7 @@ bool ShowProgress(u64 current, u64 total, const char* opstr)
DrawRectangle(MAIN_SCREEN, bar_pos_x + 1, bar_pos_y + 1, bar_width - 2, bar_height - 2, COLOR_STD_BG);
}
DrawRectangle(MAIN_SCREEN, bar_pos_x + 2, bar_pos_y + 2, prog_width, bar_height - 4, COLOR_STD_FONT);
DrawRectangle(MAIN_SCREEN, bar_pos_x + 2 + prog_width, bar_pos_y + 2, (bar_width-4) - prog_width, bar_height - 4, COLOR_STD_BG);
TruncateString(progstr, opstr, (bar_width / FONT_WIDTH_EXT) - 7, 8);
snprintf(tempstr, 64, "%s (%lu%%)", progstr, prog_percent);

6
source/filesys/filetype.c
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@ -86,11 +86,11 @@ u32 IdentifyFileType(const char* path) {
strncpy(ext_cetk, "cetk", 5);
if (FileGetSize(path_cetk) > 0)
return GAME_NUSCDN; // NUS/CDN type 2
} else if (strncasecmp(fname, TIKDB_NAME_ENC, sizeof(TIKDB_NAME_ENC)) == 0) {
} else if (strncasecmp(fname, TIKDB_NAME_ENC, sizeof(TIKDB_NAME_ENC)+1) == 0) {
return BIN_TIKDB | FLAG_ENC; // titlekey database / encrypted
} else if (strncasecmp(fname, TIKDB_NAME_DEC, sizeof(TIKDB_NAME_DEC)) == 0) {
} else if (strncasecmp(fname, TIKDB_NAME_DEC, sizeof(TIKDB_NAME_DEC)+1) == 0) {
return BIN_TIKDB; // titlekey database / decrypted
} else if (strncasecmp(fname, KEYDB_NAME, sizeof(KEYDB_NAME)) == 0) {
} else if (strncasecmp(fname, KEYDB_NAME, sizeof(KEYDB_NAME)+1) == 0) {
return BIN_KEYDB; // key database
} else if ((sscanf(fname, "slot%02lXKey", &id) == 1) && (strncasecmp(ext, "bin", 4) == 0) && (fsize = 16) && (id < 0x40)) {
return BIN_LEGKEY; // legacy key file

2
source/filesys/filetype.h
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@ -42,7 +42,7 @@
#define FTYPE_TITLEINFO(tp) (tp&(GAME_SMDH|GAME_NCCH|GAME_NCSD|GAME_CIA|GAME_TMD|GAME_NDS))
#define FTYPE_RENAMABLE(tp) (tp&(GAME_NCCH|GAME_NCSD|GAME_CIA|GAME_NDS))
#define FTYPE_TRANSFERABLE(tp) ((u32) (tp&(IMG_FAT|FLAG_CTR)) == (u32) (IMG_FAT|FLAG_CTR))
#define FTYPE_HSINJECTABLE(tp) ((u32) (tp&(GAME_NCCH|FLAG_CXI)) == (u32) (GAME_NCCH|FLAG_CXI))
#define FTYPE_HASCODE(tp) ((u32) (tp&(GAME_NCCH|FLAG_CXI)) == (u32) (GAME_NCCH|FLAG_CXI))
#define FTYPE_RESTORABLE(tp) (tp&(IMG_NAND))
#define FTYPE_EBACKUP(tp) (tp&(IMG_NAND))
#define FTYPE_XORPAD(tp) (tp&(BIN_NCCHNFO))

82
source/game/codelzss.c Normal file
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@ -0,0 +1,82 @@
#include "codelzss.h"
#define CODE_COMP_SIZE(f) ((f)->off_size_comp & 0xFFFFFF)
#define CODE_COMP_END(f) ((int) CODE_COMP_SIZE(f) - (int) (((f)->off_size_comp >> 24) % 0xFF))
#define CODE_DEC_SIZE(f) (CODE_COMP_SIZE(f) + (f)->addsize_dec)
#define CODE_SEG_OFFSET(s) (((s) & 0x0FFF) + 2)
#define CODE_SEG_SIZE(s) ((((s) >> 12) & 0xF) + 3)
typedef struct {
u32 off_size_comp; // 0xOOSSSSSS, where O == reverse offset and S == size
u32 addsize_dec; // decompressed size - compressed size
} __attribute__((packed)) CodeLzssFooter;
// see: https://github.com/zoogie/DSP1/blob/master/source/main.c#L44
u32 DecompressCodeLzss(u8* data_start, u32* code_size, u32 max_size) {
u8* comp_start = data_start;
// get footer, fix comp_start offset
if ((*code_size < sizeof(CodeLzssFooter)) || (*code_size > max_size)) return 1;
CodeLzssFooter* footer = (CodeLzssFooter*) (void*) (data_start + *code_size - sizeof(CodeLzssFooter));
if (CODE_COMP_SIZE(footer) <= *code_size) comp_start += *code_size - CODE_COMP_SIZE(footer);
else return 1;
// more sanity checks
if ((CODE_COMP_END(footer) < 0) || (CODE_DEC_SIZE(footer) > max_size))
return 1; // not reverse LZSS compressed code or too big uncompressed
// set pointers
u8* data_end = (u8*) comp_start + CODE_DEC_SIZE(footer);
u8* ptr_in = (u8*) comp_start + CODE_COMP_END(footer);
u8* ptr_out = data_end;
// main decompression loop
while ((ptr_in > comp_start) && (ptr_out > comp_start)) {
// sanity check
if (ptr_out < ptr_in) return 1;
// read and process control byte
u8 ctrlbyte = *(--ptr_in);
for (int i = 7; i >= 0; i--) {
// end conditions met?
if ((ptr_in <= comp_start) || (ptr_out <= comp_start))
break;
// process control byte
if ((ctrlbyte >> i) & 0x1) {
// control bit set, read segment code
ptr_in -= 2;
u16 seg_code = getle16(ptr_in);
if (ptr_in < comp_start) return 1; // corrupted code
u32 seg_off = CODE_SEG_OFFSET(seg_code);
u32 seg_len = CODE_SEG_SIZE(seg_code);
// sanity check for output pointer
if ((ptr_out - seg_len < comp_start) || (ptr_out + seg_off >= data_end))
return 1;
// copy data to the correct place
for (u32 c = 0; c < seg_len; c++) {
u8 byte = *(ptr_out + seg_off);
*(--ptr_out) = byte;
}
} else {
// sanity check for both pointers
if ((ptr_out == comp_start) || (ptr_in == comp_start))
return 1;
// control bit not set, copy byte verbatim
*(--ptr_out) = *(--ptr_in);
}
}
}
// check pointers
if ((ptr_in != comp_start) || (ptr_out != comp_start))
return 1;
// all fine if arriving here - return the result
*code_size = data_end - data_start;
return 0;
}

7
source/game/codelzss.h Normal file
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@ -0,0 +1,7 @@
#pragma once
#include "common.h"
#define EXEFS_CODE_NAME ".code"
u32 DecompressCodeLzss(u8* data_start, u32* code_size, u32 max_size);

1
source/game/game.h
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@ -8,5 +8,6 @@
#include "firm.h"
#include "boss.h"
#include "smdh.h"
#include "codelzss.h"
#include "nds.h"
#include "ncchinfo.h"

2
source/game/ncch.h
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@ -32,7 +32,7 @@
typedef struct {
char name[8];
u8 reserved[0x5];
u8 flag; // bit 1 for SD
u8 flag; // bit 1 for SD, bit 0 for compressed .code
u16 remaster_version;
u8 sci_data[0x30];
u8 dependencies[0x180];

13
source/godmode.c
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@ -706,7 +706,8 @@ u32 FileHandlerMenu(char* current_path, u32* cursor, u32* scroll, DirStruct* cur
bool titleinfo = (FTYPE_TITLEINFO(filetype));
bool renamable = (FTYPE_RENAMABLE(filetype));
bool transferable = (FTYPE_TRANSFERABLE(filetype) && IS_A9LH && (drvtype & DRV_FAT));
bool hsinjectable = (FTYPE_HSINJECTABLE(filetype));
bool hsinjectable = (FTYPE_HASCODE(filetype));
bool extrcodeable = (FTYPE_HASCODE(filetype));
bool restorable = (FTYPE_RESTORABLE(filetype) && IS_A9LH && !(drvtype & DRV_SYSNAND));
bool ebackupable = (FTYPE_EBACKUP(filetype));
bool xorpadable = (FTYPE_XORPAD(filetype));
@ -714,7 +715,7 @@ u32 FileHandlerMenu(char* current_path, u32* cursor, u32* scroll, DirStruct* cur
bool scriptable = (FTYPE_SCRIPT(filetype));
bool bootable = (FTYPE_BOOTABLE(filetype) && !(drvtype & DRV_VIRTUAL));
bool installable = (FTYPE_INSTALLABLE(filetype) && !(drvtype & DRV_VIRTUAL));
bool special_opt = mountable || verificable || decryptable || encryptable || cia_buildable || cia_buildable_legit || cxi_dumpable || tik_buildable || key_buildable || titleinfo || renamable || transferable || hsinjectable || restorable || xorpadable || ebackupable || keyinitable || bootable || scriptable || installable;
bool special_opt = mountable || verificable || decryptable || encryptable || cia_buildable || cia_buildable_legit || cxi_dumpable || tik_buildable || key_buildable || titleinfo || renamable || transferable || hsinjectable || restorable || xorpadable || ebackupable || extrcodeable || keyinitable || bootable || scriptable || installable;
char pathstr[32+1];
TruncateString(pathstr, curr_entry->path, 32, 8);
@ -866,6 +867,7 @@ u32 FileHandlerMenu(char* current_path, u32* cursor, u32* scroll, DirStruct* cur
int verify = (verificable) ? ++n_opt : -1;
int ctrtransfer = (transferable) ? ++n_opt : -1;
int hsinject = (hsinjectable) ? ++n_opt : -1;
int extrcode = (extrcodeable) ? ++n_opt : -1;
int rename = (renamable) ? ++n_opt : -1;
int xorpad = (xorpadable) ? ++n_opt : -1;
int xorpad_inplace = (xorpadable) ? ++n_opt : -1;
@ -891,6 +893,7 @@ u32 FileHandlerMenu(char* current_path, u32* cursor, u32* scroll, DirStruct* cur
if (rename > 0) optionstr[rename-1] = "Rename file";
if (xorpad > 0) optionstr[xorpad-1] = "Build XORpads (SD output)";
if (xorpad_inplace > 0) optionstr[xorpad_inplace-1] = "Build XORpads (inplace)";
if (extrcode > 0) optionstr[extrcode-1] = "Extract " EXEFS_CODE_NAME;
if (keyinit > 0) optionstr[keyinit-1] = "Init " KEYDB_NAME;
if (install > 0) optionstr[install-1] = "Install FIRM";
if (boot > 0) optionstr[boot-1] = "Boot FIRM";
@ -1181,6 +1184,12 @@ u32 FileHandlerMenu(char* current_path, u32* cursor, u32* scroll, DirStruct* cur
(InjectHealthAndSafety(curr_entry->path, destdrv[user_select-1]) == 0) ? "success" : "failed");
}
return 0;
} else if (user_select == extrcode) { // -> Extract code
ShowString("%s\nExtracting .code,\nplease wait...", pathstr);
if (ExtractCodeFromCxiFile(curr_entry->path) == 0) {
ShowPrompt(false, "%s\n.code extracted to " OUTPUT_PATH, pathstr);
} else ShowPrompt(false, "%s\n.code extract failed", pathstr);
return 0;
} else if (user_select == ctrtransfer) { // -> transfer CTRNAND image to SysNAND
char* destdrv[2] = { NULL };
n_opt = 0;

46
source/utils/gameutil.c
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@ -121,7 +121,7 @@ u32 LoadCiaStub(CiaStub* stub, const char* path) {
return 0;
}
u32 LoadExeFsFile(void* data, const char* path, u32 offset, const char* name, u32 size_max) {
u32 LoadExeFsFile(void* data, const char* path, u32 offset, const char* name, u32 size_max, u32* bytes_read) {
NcchHeader ncch;
ExeFsHeader exefs;
FIL file;
@ -161,6 +161,7 @@ u32 LoadExeFsFile(void* data, const char* path, u32 offset, const char* name, u3
}
} else ret = 1;
if (bytes_read) *bytes_read = btr;
fvx_close(&file);
return ret;
}
@ -172,7 +173,7 @@ u32 LoadNcchMeta(CiaMeta* meta, const char* path, u64 offset) {
// get dependencies from exthdr, icon from exeFS
if ((LoadNcchHeaders(&ncch, &exthdr, NULL, path, offset) != 0) ||
(BuildCiaMeta(meta, &exthdr, NULL) != 0) ||
(LoadExeFsFile(meta->smdh, path, offset, "icon", sizeof(meta->smdh))))
(LoadExeFsFile(meta->smdh, path, offset, "icon", sizeof(meta->smdh), NULL)))
return 1;
return 0;
@ -1256,7 +1257,7 @@ u32 BuildCiaFromNcchFile(const char* path_ncch, const char* path_cia) {
// optional stuff (proper titlekey / meta data)
FindTitleKey((&cia->ticket), title_id);
if (exthdr && (BuildCiaMeta(meta, exthdr, NULL) == 0) &&
(LoadExeFsFile(meta->smdh, path_ncch, 0, "icon", sizeof(meta->smdh)) == 0) &&
(LoadExeFsFile(meta->smdh, path_ncch, 0, "icon", sizeof(meta->smdh), NULL) == 0) &&
(InsertCiaMeta(path_cia, meta) == 0))
cia->header.size_meta = CIA_META_SIZE;
@ -1321,7 +1322,7 @@ u32 BuildCiaFromNcsdFile(const char* path_ncsd, const char* path_cia) {
// optional stuff (proper titlekey / meta data)
FindTitleKey(&(cia->ticket), title_id);
if ((BuildCiaMeta(meta, exthdr, NULL) == 0) &&
(LoadExeFsFile(meta->smdh, path_ncsd, NCSD_CNT0_OFFSET, "icon", sizeof(meta->smdh)) == 0) &&
(LoadExeFsFile(meta->smdh, path_ncsd, NCSD_CNT0_OFFSET, "icon", sizeof(meta->smdh), NULL) == 0) &&
(InsertCiaMeta(path_cia, meta) == 0))
cia->header.size_meta = CIA_META_SIZE;
@ -1401,6 +1402,37 @@ u32 DumpCxiSrlFromTmdFile(const char* path) {
return 0;
}
u32 ExtractCodeFromCxiFile(const char* path) {
u8* code = (u8*) TEMP_BUFFER;
u32 code_max_size = TEMP_BUFFER_SIZE;
NcchHeader ncch;
NcchExtHeader exthdr;
// load ncch, exthdr, .code
u32 code_size;
if ((LoadNcchHeaders(&ncch, &exthdr, NULL, path, 0) != 0) ||
(LoadExeFsFile(code, path, 0, EXEFS_CODE_NAME, code_max_size, &code_size)))
return 1;
// decompress code (only if required)
if ((exthdr.flag & 0x1) && (DecompressCodeLzss(code, &code_size, code_max_size) != 0))
return 1;
// build output path
char dest[256];
snprintf(dest, 256, OUTPUT_PATH "/%016llX%s%s", ncch.programId, (exthdr.flag & 0x1) ? ".dec" : "", EXEFS_CODE_NAME);
// write output file
fvx_unlink(dest);
if (fvx_qwrite(dest, code, 0, code_size, NULL) != FR_OK) {
fvx_unlink(dest);
return 1;
}
return 0;
}
u32 LoadSmdhFromGameFile(const char* path, Smdh* smdh) {
u32 filetype = IdentifyFileType(path);
@ -1408,9 +1440,9 @@ u32 LoadSmdhFromGameFile(const char* path, Smdh* smdh) {
UINT btr;
if ((fvx_qread(path, smdh, 0, sizeof(Smdh), &btr) == FR_OK) || (btr == sizeof(Smdh))) return 0;
} else if (filetype & GAME_NCCH) { // NCCH file
if (LoadExeFsFile(smdh, path, 0, "icon", sizeof(Smdh)) == 0) return 0;
if (LoadExeFsFile(smdh, path, 0, "icon", sizeof(Smdh), NULL) == 0) return 0;
} else if (filetype & GAME_NCSD) { // NCSD file
if (LoadExeFsFile(smdh, path, NCSD_CNT0_OFFSET, "icon", sizeof(Smdh)) == 0) return 0;
if (LoadExeFsFile(smdh, path, NCSD_CNT0_OFFSET, "icon", sizeof(Smdh), NULL) == 0) return 0;
} else if (filetype & GAME_CIA) { // CIA file
CiaInfo info;
UINT btr;
@ -1419,7 +1451,7 @@ u32 LoadSmdhFromGameFile(const char* path, Smdh* smdh) {
(GetCiaInfo(&info, (CiaHeader*) &info) != 0)) return 1;
if ((info.offset_meta) && (fvx_qread(path, smdh, info.offset_meta + 0x400, sizeof(Smdh), &btr) == FR_OK) &&
(btr == sizeof(Smdh))) return 0;
else if (LoadExeFsFile(smdh, path, info.offset_content, "icon", sizeof(Smdh)) == 0) return 0;
else if (LoadExeFsFile(smdh, path, info.offset_content, "icon", sizeof(Smdh), NULL) == 0) return 0;
} else if (filetype & GAME_TMD) {
char path_content[256];
if (GetTmdContentPath(path_content, path) != 0) return 1;

1
source/utils/gameutil.h
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@ -7,6 +7,7 @@ u32 CheckEncryptedGameFile(const char* path);
u32 CryptGameFile(const char* path, bool inplace, bool encrypt);
u32 BuildCiaFromGameFile(const char* path, bool force_legit);
u32 DumpCxiSrlFromTmdFile(const char* path);
u32 ExtractCodeFromCxiFile(const char* path);
u32 ShowGameFileTitleInfo(const char* path);
u32 BuildNcchInfoXorpads(const char* destdir, const char* path);
u32 CheckHealthAndSafetyInject(const char* hsdrv);