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pl_u, applets/web: Decrypt shared fonts to TTF files

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This commit is contained in:
Morph 2020-11-29 10:54:09 -05:00
parent 46183294b2
commit d46ca5a015
3 changed files with 117 additions and 18 deletions
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86
src/core/hle/service/am/applets/web_browser.cpp
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@ -16,12 +16,14 @@
#include "core/file_sys/romfs.h"
#include "core/file_sys/system_archive/system_archive.h"
#include "core/file_sys/vfs_types.h"
#include "core/file_sys/vfs_vector.h"
#include "core/frontend/applets/web_browser.h"
#include "core/hle/kernel/process.h"
#include "core/hle/result.h"
#include "core/hle/service/am/am.h"
#include "core/hle/service/am/applets/web_browser.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/ns/pl_u.h"
namespace Service::AM::Applets {
@ -123,6 +125,88 @@ FileSys::VirtualFile GetOfflineRomFS(Core::System& system, u64 title_id,
}
}
void ExtractSharedFonts(Core::System& system) {
static constexpr std::array<const char*, 7> DECRYPTED_SHARED_FONTS{
"FontStandard.ttf",
"FontChineseSimplified.ttf",
"FontExtendedChineseSimplified.ttf",
"FontChineseTraditional.ttf",
"FontKorean.ttf",
"FontNintendoExtended.ttf",
"FontNintendoExtended2.ttf",
};
for (std::size_t i = 0; i < NS::SHARED_FONTS.size(); ++i) {
const auto fonts_dir = Common::FS::SanitizePath(
fmt::format("{}/fonts", Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
Common::FS::DirectorySeparator::PlatformDefault);
const auto font_file_path =
Common::FS::SanitizePath(fmt::format("{}/{}", fonts_dir, DECRYPTED_SHARED_FONTS[i]),
Common::FS::DirectorySeparator::PlatformDefault);
if (Common::FS::Exists(font_file_path)) {
continue;
}
const auto font = NS::SHARED_FONTS[i];
const auto font_title_id = static_cast<u64>(font.first);
const auto nca = system.GetFileSystemController().GetSystemNANDContents()->GetEntry(
font_title_id, FileSys::ContentRecordType::Data);
FileSys::VirtualFile romfs;
if (!nca) {
romfs = FileSys::SystemArchive::SynthesizeSystemArchive(font_title_id);
} else {
romfs = nca->GetRomFS();
}
if (!romfs) {
LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} cannot be extracted!",
font_title_id);
continue;
}
const auto extracted_romfs = FileSys::ExtractRomFS(romfs);
if (!extracted_romfs) {
LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} failed to extract!",
font_title_id);
continue;
}
const auto font_file = extracted_romfs->GetFile(font.second);
if (!font_file) {
LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} has no font file \"{}\"!",
font_title_id, font.second);
continue;
}
std::vector<u32> font_data_u32(font_file->GetSize() / sizeof(u32));
font_file->ReadBytes<u32>(font_data_u32.data(), font_file->GetSize());
std::transform(font_data_u32.begin(), font_data_u32.end(), font_data_u32.begin(),
Common::swap32);
std::vector<u8> decrypted_data(font_file->GetSize() - 8);
NS::DecryptSharedFontToTTF(font_data_u32, decrypted_data);
FileSys::VirtualFile decrypted_font = std::make_shared<FileSys::VectorVfsFile>(
std::move(decrypted_data), DECRYPTED_SHARED_FONTS[i]);
const auto temp_dir =
system.GetFilesystem()->CreateDirectory(fonts_dir, FileSys::Mode::ReadWrite);
const auto out_file = temp_dir->CreateFile(DECRYPTED_SHARED_FONTS[i]);
FileSys::VfsRawCopy(decrypted_font, out_file);
}
}
} // namespace
WebBrowser::WebBrowser(Core::System& system_, const Core::Frontend::WebBrowserApplet& frontend_)
@ -155,6 +239,8 @@ void WebBrowser::Initialize() {
LOG_DEBUG(Service_AM, "WebArgHeader: total_tlv_entries={}, shim_kind={}",
web_arg_header.total_tlv_entries, web_arg_header.shim_kind);
ExtractSharedFonts(system);
switch (web_arg_header.shim_kind) {
case ShimKind::Shop:
InitializeShop();