diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/hle/service/ns/pl_u.cpp | 30 | ||||
-rw-r--r-- | src/core/hle/service/ns/pl_u.h | 19 |
2 files changed, 31 insertions, 18 deletions
diff --git a/src/core/hle/service/ns/pl_u.cpp b/src/core/hle/service/ns/pl_u.cpp index c8a215845..71c7587db 100644 --- a/src/core/hle/service/ns/pl_u.cpp +++ b/src/core/hle/service/ns/pl_u.cpp @@ -27,29 +27,11 @@ 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"), -}; - // 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 [[maybe_unused]] constexpr VAddr SHARED_FONT_MEM_VADDR{0x00000009d3016000ULL}; @@ -80,6 +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, diff --git a/src/core/hle/service/ns/pl_u.h b/src/core/hle/service/ns/pl_u.h index 224dcb997..f920c7f69 100644 --- a/src/core/hle/service/ns/pl_u.h +++ b/src/core/hle/service/ns/pl_u.h @@ -16,6 +16,25 @@ class FileSystemController; namespace NS { +enum class FontArchives : u64 { + Extension = 0x0100000000000810, + Standard = 0x0100000000000811, + Korean = 0x0100000000000812, + ChineseTraditional = 0x0100000000000813, + ChineseSimple = 0x0100000000000814, +}; + +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"), +}; + +void DecryptSharedFontToTTF(const std::vector<u32>& input, std::vector<u8>& output); void EncryptSharedFont(const std::vector<u32>& input, std::vector<u8>& output, std::size_t& offset); class PL_U final : public ServiceFramework<PL_U> { |