2 files changed, 48 insertions, 112 deletions

diff --git a/src/core/file_sys/system_archive/shared_font.cpp b/src/core/file_sys/system_archive/shared_font.cpp
index 2c05eb42e..8613a39b7 100644
--- a/src/core/file_sys/system_archive/shared_font.cpp
+++ b/src/core/file_sys/system_archive/shared_font.cpp
@@ -23,8 +23,7 @@ VirtualFile PackBFTTF(const std::array<u8, Size>& data, const std::string& name)
 
     std::vector<u8> bfttf(Size + sizeof(u64));
 
-    u64 offset = 0;
-    Service::NS::EncryptSharedFont(vec, bfttf, offset);
+    Service::NS::EncryptSharedFont(vec, bfttf);
     return std::make_shared<VectorVfsFile>(std::move(bfttf), name);
 }
 
diff --git a/src/core/hle/service/ns/pl_u.cpp b/src/core/hle/service/ns/pl_u.cpp
index f64535237..bafba3d2f 100644
--- a/src/core/hle/service/ns/pl_u.cpp
+++ b/src/core/hle/service/ns/pl_u.cpp
@@ -24,6 +24,7 @@
 #include "core/file_sys/nca_metadata.h"
 #include "core/file_sys/registered_cache.h"
 #include "core/file_sys/romfs.h"
+#include "core/file_sys/system_archive/system_archive.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/shared_memory.h"
 #include "core/hle/service/filesystem/filesystem.h"
@@ -94,15 +95,16 @@ static void DecryptSharedFont(const std::vector<u32>& input, Kernel::PhysicalMem
     offset += transformed_font.size() * sizeof(u32);
 }
 
-static void EncryptSharedFont(const std::vector<u8>& input, Kernel::PhysicalMemory& output,
-                              std::size_t& offset) {
-    ASSERT_MSG(offset + input.size() + 8 < SHARED_FONT_MEM_SIZE, "Shared fonts exceeds 17mb!");
-    const u32 KEY = EXPECTED_MAGIC ^ EXPECTED_RESULT;
-    std::memcpy(output.data() + offset, &EXPECTED_RESULT, sizeof(u32)); // Magic header
-    const u32 ENC_SIZE = static_cast<u32>(input.size()) ^ KEY;
-    std::memcpy(output.data() + offset + sizeof(u32), &ENC_SIZE, sizeof(u32));
-    std::memcpy(output.data() + offset + (sizeof(u32) * 2), input.data(), input.size());
-    offset += input.size() + (sizeof(u32) * 2);
+static void EncryptSharedFont(const std::vector<u8>& input, Kernel::PhysicalMemory& output) {
+    ASSERT_MSG(input.size() * sizeof(u32) < SHARED_FONT_MEM_SIZE, "Shared fonts exceeds 17mb!");
+
+    const auto key = Common::swap32(EXPECTED_RESULT ^ EXPECTED_MAGIC);
+    std::vector<u32> transformed_font(input.size() + 2);
+    transformed_font[0] = Common::swap32(EXPECTED_MAGIC);
+    transformed_font[1] = Common::swap32(input.size() * sizeof(u32)) ^ key;
+    std::transform(input.begin(), input.end(), transformed_font.begin() + 2,
+                   [key](u32 in) { return in ^ key; });
+    std::memcpy(output.data(), transformed_font.data(), transformed_font.size() * sizeof(u32));
 }
 
 // Helper function to make BuildSharedFontsRawRegions a bit nicer
@@ -168,114 +170,49 @@ PL_U::PL_U(Core::System& system)
     // Attempt to load shared font data from disk
     const auto* nand = fsc.GetSystemNANDContents();
     std::size_t offset = 0;
-    // Rebuild shared fonts from data ncas
-    if (nand->HasEntry(static_cast<u64>(FontArchives::Standard),
-                       FileSys::ContentRecordType::Data)) {
-        impl->shared_font = std::make_shared<Kernel::PhysicalMemory>(SHARED_FONT_MEM_SIZE);
-        for (auto font : SHARED_FONTS) {
-            const auto nca =
-                nand->GetEntry(static_cast<u64>(font.first), FileSys::ContentRecordType::Data);
-            if (!nca) {
-                LOG_ERROR(Service_NS, "Failed to find {:016X}! Skipping",
-                          static_cast<u64>(font.first));
-                continue;
-            }
-            const auto romfs = nca->GetRomFS();
-            if (!romfs) {
-                LOG_ERROR(Service_NS, "{:016X} has no RomFS! Skipping",
-                          static_cast<u64>(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));
-                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);
-                continue;
-            }
-            std::vector<u32> font_data_u32(font_fp->GetSize() / sizeof(u32));
-            font_fp->ReadBytes<u32>(font_data_u32.data(), font_fp->GetSize());
-            // We need to be BigEndian as u32s for the xor encryption
-            std::transform(font_data_u32.begin(), font_data_u32.end(), font_data_u32.begin(),
-                           Common::swap32);
-            FontRegion region{
-                static_cast<u32>(offset + 8),
-                static_cast<u32>((font_data_u32.size() * sizeof(u32)) -
-                                 8)}; // Font offset and size do not account for the header
-            DecryptSharedFont(font_data_u32, *impl->shared_font, offset);
-            impl->shared_font_regions.push_back(region);
+    // Rebuild shared fonts from data ncas or synthesize
+
+    impl->shared_font = std::make_shared<Kernel::PhysicalMemory>(SHARED_FONT_MEM_SIZE);
+    for (auto font : SHARED_FONTS) {
+        FileSys::VirtualFile romfs;
+        const auto nca =
+            nand->GetEntry(static_cast<u64>(font.first), FileSys::ContentRecordType::Data);
+        if (nca) {
+            romfs = nca->GetRomFS();
         }
 
-    } else {
-        impl->shared_font = std::make_shared<Kernel::PhysicalMemory>(
-            SHARED_FONT_MEM_SIZE); // Shared memory needs to always be allocated and a fixed size
-
-        const std::string user_path = FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir);
-        const std::string filepath{user_path + SHARED_FONT};
+        if (!romfs) {
+            romfs = FileSys::SystemArchive::SynthesizeSystemArchive(static_cast<u64>(font.first));
+        }
 
-        // Create path if not already created
-        if (!FileUtil::CreateFullPath(filepath)) {
-            LOG_ERROR(Service_NS, "Failed to create sharedfonts path \"{}\"!", filepath);
-            return;
+        if (!romfs) {
+            LOG_ERROR(Service_NS, "Failed to find or synthesize {:016X}! Skipping",
+                      static_cast<u64>(font.first));
+            continue;
         }
 
-        bool using_ttf = false;
-        for (const char* font_ttf : SHARED_FONTS_TTF) {
-            if (FileUtil::Exists(user_path + font_ttf)) {
-                using_ttf = true;
-                FileUtil::IOFile file(user_path + font_ttf, "rb");
-                if (file.IsOpen()) {
-                    std::vector<u8> ttf_bytes(file.GetSize());
-                    file.ReadBytes<u8>(ttf_bytes.data(), ttf_bytes.size());
-                    FontRegion region{
-                        static_cast<u32>(offset + 8),
-                        static_cast<u32>(ttf_bytes.size())}; // Font offset and size do not account
-                                                             // for the header
-                    EncryptSharedFont(ttf_bytes, *impl->shared_font, offset);
-                    impl->shared_font_regions.push_back(region);
-                } else {
-                    LOG_WARNING(Service_NS, "Unable to load font: {}", font_ttf);
-                }
-            } else if (using_ttf) {
-                LOG_WARNING(Service_NS, "Unable to find font: {}", font_ttf);
-            }
+        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));
+            continue;
         }
-        if (using_ttf)
-            return;
-        FileUtil::IOFile file(filepath, "rb");
-
-        if (file.IsOpen()) {
-            // Read shared font data
-            ASSERT(file.GetSize() == SHARED_FONT_MEM_SIZE);
-            file.ReadBytes(impl->shared_font->data(), impl->shared_font->size());
-            impl->BuildSharedFontsRawRegions(*impl->shared_font);
-        } else {
-            LOG_WARNING(Service_NS,
-                        "Shared Font file missing. Loading open source replacement from memory");
-
-            // clang-format off
-            const std::vector<std::vector<u8>> open_source_shared_fonts_ttf = {
-                {std::begin(FontChineseSimplified), std::end(FontChineseSimplified)},
-                {std::begin(FontChineseTraditional), std::end(FontChineseTraditional)},
-                {std::begin(FontExtendedChineseSimplified), std::end(FontExtendedChineseSimplified)},
-                {std::begin(FontKorean), std::end(FontKorean)},
-                {std::begin(FontNintendoExtended), std::end(FontNintendoExtended)},
-                {std::begin(FontStandard), std::end(FontStandard)},
-            };
-            // clang-format on
-
-            for (const std::vector<u8>& font_ttf : open_source_shared_fonts_ttf) {
-                const FontRegion region{static_cast<u32>(offset + 8),
-                                        static_cast<u32>(font_ttf.size())};
-                EncryptSharedFont(font_ttf, *impl->shared_font, offset);
-                impl->shared_font_regions.push_back(region);
-            }
+        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);
+            continue;
         }
+        std::vector<u32> font_data_u32(font_fp->GetSize() / sizeof(u32));
+        font_fp->ReadBytes<u32>(font_data_u32.data(), font_fp->GetSize());
+        // We need to be BigEndian as u32s for the xor encryption
+        std::transform(font_data_u32.begin(), font_data_u32.end(), font_data_u32.begin(),
+                       Common::swap32);
+        // Font offset and size do not account for the header
+        const FontRegion region{static_cast<u32>(offset + 8),
+                                static_cast<u32>((font_data_u32.size() * sizeof(u32)) - 8)};
+        DecryptSharedFont(font_data_u32, *impl->shared_font, offset);
+        impl->shared_font_regions.push_back(region);
     }
 }