diff options
Diffstat (limited to 'src/core/hle/service/ns/pl_u.cpp')
-rw-r--r-- | src/core/hle/service/ns/pl_u.cpp | 55 |
1 files changed, 18 insertions, 37 deletions
diff --git a/src/core/hle/service/ns/pl_u.cpp b/src/core/hle/service/ns/pl_u.cpp index 40838a225..71c7587db 100644 --- a/src/core/hle/service/ns/pl_u.cpp +++ b/src/core/hle/service/ns/pl_u.cpp @@ -27,42 +27,14 @@ namespace Service::NS { -enum class FontArchives : u64 { - Extension = 0x0100000000000810, - Standard = 0x0100000000000811, - Korean = 0x0100000000000812, - ChineseTraditional = 0x0100000000000813, - ChineseSimple = 0x0100000000000814, -}; - struct FontRegion { u32 offset; u32 size; }; -constexpr std::array<std::pair<FontArchives, const char*>, 7> SHARED_FONTS{ - std::make_pair(FontArchives::Standard, "nintendo_udsg-r_std_003.bfttf"), - std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_org_zh-cn_003.bfttf"), - std::make_pair(FontArchives::ChineseSimple, "nintendo_udsg-r_ext_zh-cn_003.bfttf"), - std::make_pair(FontArchives::ChineseTraditional, "nintendo_udjxh-db_zh-tw_003.bfttf"), - std::make_pair(FontArchives::Korean, "nintendo_udsg-r_ko_003.bfttf"), - std::make_pair(FontArchives::Extension, "nintendo_ext_003.bfttf"), - std::make_pair(FontArchives::Extension, "nintendo_ext2_003.bfttf"), -}; - -constexpr std::array<const char*, 7> SHARED_FONTS_TTF{ - "FontStandard.ttf", - "FontChineseSimplified.ttf", - "FontExtendedChineseSimplified.ttf", - "FontChineseTraditional.ttf", - "FontKorean.ttf", - "FontNintendoExtended.ttf", - "FontNintendoExtended2.ttf", -}; - // The below data is specific to shared font data dumped from Switch on f/w 2.2 // Virtual address and offsets/sizes likely will vary by dump -constexpr VAddr SHARED_FONT_MEM_VADDR{0x00000009d3016000ULL}; +[[maybe_unused]] constexpr VAddr SHARED_FONT_MEM_VADDR{0x00000009d3016000ULL}; constexpr u32 EXPECTED_RESULT{0x7f9a0218}; // What we expect the decrypted bfttf first 4 bytes to be constexpr u32 EXPECTED_MAGIC{0x36f81a1e}; // What we expect the encrypted bfttf first 4 bytes to be constexpr u64 SHARED_FONT_MEM_SIZE{0x1100000}; @@ -90,6 +62,18 @@ static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMem offset += transformed_font.size() * sizeof(u32); } +void DecryptSharedFontToTTF(const std::vector<u32>& input, std::vector<u8>& output) { + ASSERT_MSG(input[0] == EXPECTED_MAGIC, "Failed to derive key, unexpected magic number"); + + const u32 KEY = input[0] ^ EXPECTED_RESULT; // Derive key using an inverse xor + std::vector<u32> transformed_font(input.size()); + // TODO(ogniK): Figure out a better way to do this + std::transform(input.begin(), input.end(), transformed_font.begin(), + [&KEY](u32 font_data) { return Common::swap32(font_data ^ KEY); }); + transformed_font[1] = Common::swap32(transformed_font[1]) ^ KEY; // "re-encrypt" the size + std::memcpy(output.data(), transformed_font.data() + 2, transformed_font.size() * sizeof(u32)); +} + void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, std::size_t& offset) { ASSERT_MSG(offset + (input.size() * sizeof(u32)) < SHARED_FONT_MEM_SIZE, @@ -151,8 +135,8 @@ struct PL_U::Impl { std::vector<FontRegion> shared_font_regions; }; -PL_U::PL_U(Core::System& system) - : ServiceFramework("pl:u"), impl{std::make_unique<Impl>()}, system(system) { +PL_U::PL_U(Core::System& system_) + : ServiceFramework{system_, "pl:u"}, impl{std::make_unique<Impl>()} { // clang-format off static const FunctionInfo functions[] = { {0, &PL_U::RequestLoad, "RequestLoad"}, @@ -192,21 +176,18 @@ PL_U::PL_U(Core::System& system) } if (!romfs) { - LOG_ERROR(Service_NS, "Failed to find or synthesize {:016X}! Skipping", - static_cast<u64>(font.first)); + LOG_ERROR(Service_NS, "Failed to find or synthesize {:016X}! Skipping", font.first); continue; } const auto extracted_romfs = FileSys::ExtractRomFS(romfs); if (!extracted_romfs) { - LOG_ERROR(Service_NS, "Failed to extract RomFS for {:016X}! Skipping", - static_cast<u64>(font.first)); + LOG_ERROR(Service_NS, "Failed to extract RomFS for {:016X}! Skipping", font.first); continue; } const auto font_fp = extracted_romfs->GetFile(font.second); if (!font_fp) { - LOG_ERROR(Service_NS, "{:016X} has no file \"{}\"! Skipping", - static_cast<u64>(font.first), font.second); + LOG_ERROR(Service_NS, "{:016X} has no file \"{}\"! Skipping", font.first, font.second); continue; } std::vector<u32> font_data_u32(font_fp->GetSize() / sizeof(u32)); |