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-rw-r--r--src/core/hle/service/ns/pl_u.cpp30
-rw-r--r--src/core/hle/service/ns/pl_u.h19
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> {