static inline bool patchRomfsRedirection(u64 progId, u8* code, u32 size)
{
/* Here we look for "/luma/titles/[u64 titleID in hex, uppercase]/romfs"
If it exists it should be a decrypted raw RomFS */
char path[] = "/luma/titles/0000000000000000/romfs";
progIdToStr(path + 28, progId);
IFile file;
u32 archive = openLumaFile(&file, path);
if(!archive) return true;
bool ret = false;
u64 romfsSize;
if(R_FAILED(IFile_GetSize(&file, &romfsSize))) goto exit;
u64 total;
u32 magic;
if(R_FAILED(IFile_Read(&file, &total, &magic, 4)) || total != 4 || magic != 0x43465649) goto exit;
u32 fsOpenFileDirectly = findFunctionCommand(code, size, 0x08030204),
throwFatalError = findThrowFatalError(code, size);
if(fsOpenFileDirectly == 0xFFFFFFFF || throwFatalError == 0xFFFFFFFF) goto exit;
//Setup the payload
u8 *payload = code + throwFatalError;
memcpy(payload, romfsredir_bin, romfsredir_bin_size);
memcpy(payload + romfsredir_bin_size, path, sizeof(path));
*(u32 *)(payload + 0xC) = *(u32 *)(code + fsOpenFileDirectly);
u32 *payloadSymbols = (u32 *)(payload + romfsredir_bin_size - 0x24);
payloadSymbols[0] = 0x100000 + fsOpenFileDirectly + 4;
*(u64 *)(payloadSymbols + 2) = 0x1000ULL;
*(u64 *)(payloadSymbols + 4) = romfsSize - 0x1000ULL;
payloadSymbols[6] = archive;
payloadSymbols[7] = sizeof(path);
payloadSymbols[8] = 0x100000 + throwFatalError + romfsredir_bin_size; //String pointer
//Place the hooks
*(u32 *)(code + fsOpenFileDirectly) = MAKE_BRANCH(fsOpenFileDirectly, throwFatalError);
u32 fsOpenLinkFile = findFunctionCommand(code, size, 0x80C0000);
if(fsOpenLinkFile != 0xFFFFFFFF)
{
*(u32 *)(code + fsOpenLinkFile) = 0xE3A03003; //mov r3, #3
*(u32 *)(code + fsOpenLinkFile + 4) = MAKE_BRANCH(fsOpenLinkFile + 4, throwFatalError);
}
ret = true;
exit:
IFile_Close(&file);
return ret;
}
static int loadTitleCodeSection(u64 progId, u8 *code, u32 size)
{
/* Here we look for "/luma/code_sections/[u64 titleID in hex, uppercase].bin"
If it exists it should be a decompressed binary code file */
char path[] = "/luma/code_sections/0000000000000000.bin";
progIdToStr(path + 35, progId);
IFile file;
Result ret = fileOpen(&file, ARCHIVE_SDMC, path, FS_OPEN_READ);
if(R_SUCCEEDED(ret))
{
u64 fileSize, total;
ret = IFile_GetSize(&file, &fileSize);
if(!R_SUCCEEDED(ret) || fileSize > size) return -1;
ret = IFile_Read(&file, &total, code, fileSize);
IFile_Close(&file);
if(!R_SUCCEEDED(ret)) return -1;
else if(total < fileSize) return -2; //Shouldn't happen
}
return ret;
}
static inline bool loadTitleCodeSection(u64 progId, u8 *code, u32 size)
{
/* Here we look for "/luma/titles/[u64 titleID in hex, uppercase]/code.bin"
If it exists it should be a decrypted and decompressed binary code file */
char path[] = "/luma/titles/0000000000000000/code.bin";
progIdToStr(path + 28, progId);
IFile file;
if(!openLumaFile(&file, path)) return true;
bool ret;
u64 fileSize;
if(R_FAILED(IFile_GetSize(&file, &fileSize)) || fileSize > size) ret = false;
else
{
u64 total;
ret = R_SUCCEEDED(IFile_Read(&file, &total, code, fileSize)) && total == fileSize;
}
IFile_Close(&file);
return ret;
}
static void loadCustomVerString(u16 *out, u32 *verStringSize, u32 currentNand)
{
static const char *paths[] = { "/puma/customversion_sys.txt",
"/puma/customversion_emu.txt",
"/puma/customversion_emu2.txt",
"/puma/customversion_emu3.txt",
"/puma/customversion_emu4.txt" };
IFile file;
if(R_SUCCEEDED(fileOpen(&file, ARCHIVE_SDMC, paths[currentNand], FS_OPEN_READ)))
{
u64 fileSize;
if(R_SUCCEEDED(IFile_GetSize(&file, &fileSize)) && fileSize <= 62)
{
u8 buf[fileSize];
u64 total;
if(R_SUCCEEDED(IFile_Read(&file, &total, buf, fileSize)))
{
static const u8 bom[] = {0xEF, 0xBB, 0xBF};
u32 finalSize = 0;
//Convert from UTF-8 to UTF-16 (Nintendo doesn't support 4-byte UTF-16, so 4-byte UTF-8 is unsupported)
for(u32 increase, fileSizeTmp = (u32)fileSize, i = (fileSizeTmp > 2 && memcmp(buf, bom, 3) == 0) ? 3 : 0;
i < fileSizeTmp && finalSize < 19; i += increase, finalSize++)
{
if((buf[i] & 0x80) == 0 && !(buf[i] == 0xA || buf[i] == 0xD))
{
increase = 1;
out[finalSize] = (u16)buf[i];
}
else if((buf[i] & 0xE0) == 0xC0 && i + 1 < fileSizeTmp && (buf[i + 1] & 0xC0) == 0x80)
{
increase = 2;
out[finalSize] = (u16)(((buf[i] & 0x1F) << 6) | (buf[i + 1] & 0x3F));
}
else if((buf[i] & 0xF0) == 0xE0 && i + 2 < fileSizeTmp && (buf[i + 1] & 0xC0) == 0x80 && (buf[i + 2] & 0xC0) == 0x80)
{
increase = 3;
out[finalSize] = (u16)(((buf[i] & 0xF) << 12) | ((buf[i + 1] & 0x3F) << 6) | (buf[i + 2] & 0x3F));
}
else break;
}
if(finalSize > 0)
{
if(finalSize > 5 && finalSize < 19) out[finalSize++] = 0;
*verStringSize = finalSize * 2;
}
}
}
IFile_Close(&file);
}
}
static inline bool loadTitleLocaleConfig(u64 progId, u8 *regionId, u8 *languageId)
{
/* Here we look for "/luma/titles/[u64 titleID in hex, uppercase]/locale.txt"
If it exists it should contain, for example, "EUR IT" */
char path[] = "/luma/titles/0000000000000000/locale.txt";
progIdToStr(path + 28, progId);
IFile file;
if(!openLumaFile(&file, path)) return true;
bool ret = false;
u64 fileSize;
if(R_FAILED(IFile_GetSize(&file, &fileSize)) || fileSize < 6 || fileSize > 8) goto exit;
char buf[8];
u64 total;
if(R_FAILED(IFile_Read(&file, &total, buf, fileSize))) goto exit;
u32 i,
j;
for(i = 0; i < 7; i++)
{
static const char *regions[] = {"JPN", "USA", "EUR", "AUS", "CHN", "KOR", "TWN"};
if(memcmp(buf, regions[i], 3) == 0)
{
*regionId = (u8)i;
break;
}
}
for(j = 0; j < 12; j++)
{
static const char *languages[] = {"JP", "EN", "FR", "DE", "IT", "ES", "ZH", "KO", "NL", "PT", "RU", "TW"};
if(memcmp(buf + 4, languages[j], 2) == 0)
{
*languageId = (u8)j;
break;
}
}
ret = i != 7 && j != 12;
exit:
IFile_Close(&file);
return ret;
}
static void loadTitleLocaleConfig(u64 progId, u8 *regionId, u8 *languageId)
{
/* Here we look for "/puma/locales/[u64 titleID in hex, uppercase].txt"
If it exists it should contain, for example, "EUR IT" */
char path[] = "/puma/locales/0000000000000000.txt";
progIdToStr(path + 29, progId);
IFile file;
if(R_SUCCEEDED(fileOpen(&file, ARCHIVE_SDMC, path, FS_OPEN_READ)))
{
u64 fileSize;
if(R_SUCCEEDED(IFile_GetSize(&file, &fileSize)) && fileSize > 5 && fileSize < 9)
{
char buf[fileSize];
u64 total;
if(R_SUCCEEDED(IFile_Read(&file, &total, buf, fileSize)))
{
for(u32 i = 0; i < 7; i++)
{
static const char *regions[] = {"JPN", "USA", "EUR", "AUS", "CHN", "KOR", "TWN"};
if(memcmp(buf, regions[i], 3) == 0)
{
*regionId = (u8)i;
break;
}
}
for(u32 i = 0; i < 12; i++)
{
static const char *languages[] = {"JP", "EN", "FR", "DE", "IT", "ES", "ZH", "KO", "NL", "PT", "RU", "TW"};
if(memcmp(buf + 4, languages[i], 2) == 0)
{
*languageId = (u8)i;
break;
}
}
}
}
IFile_Close(&file);
}
}
static void loadTitleCodeSection(u64 progId, u8 *code, u32 size)
{
/* Here we look for "/puma/code_sections/[u64 titleID in hex, uppercase].bin"
If it exists it should be a decompressed binary code file */
char path[] = "/puma/code_sections/0000000000000000.bin";
progIdToStr(path + 35, progId);
IFile file;
if(R_SUCCEEDED(fileOpen(&file, ARCHIVE_SDMC, path, FS_OPEN_READ)))
{
u64 fileSize;
if(R_SUCCEEDED(IFile_GetSize(&file, &fileSize)) && fileSize <= size)
{
u64 total;
IFile_Read(&file, &total, code, fileSize);
}
IFile_Close(&file);
}
}
