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// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/fs/file.h"
#include "common/fs/fs.h"
#include "common/fs/path_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/core.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/mode.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/patch_manager.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/file_sys/vfs_vector.h"
#include "core/frontend/applets/web_browser.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/result.h"
#include "core/hle/service/am/am.h"
#include "core/hle/service/am/applets/applet_web_browser.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/ns/pl_u.h"
#include "core/loader/loader.h"
namespace Service::AM::Applets {
namespace {
template <typename T>
void ParseRawValue(T& value, const std::vector<u8>& data) {
static_assert(std::is_trivially_copyable_v<T>,
"It's undefined behavior to use memcpy with non-trivially copyable objects");
std::memcpy(&value, data.data(), data.size());
}
template <typename T>
T ParseRawValue(const std::vector<u8>& data) {
T value;
ParseRawValue(value, data);
return value;
}
std::string ParseStringValue(const std::vector<u8>& data) {
return Common::StringFromFixedZeroTerminatedBuffer(reinterpret_cast<const char*>(data.data()),
data.size());
}
std::string GetMainURL(const std::string& url) {
const auto index = url.find('?');
if (index == std::string::npos) {
return url;
}
return url.substr(0, index);
}
std::string ResolveURL(const std::string& url) {
const auto index = url.find_first_of('%');
if (index == std::string::npos) {
return url;
}
return url.substr(0, index) + "lp1" + url.substr(index + 1);
}
WebArgInputTLVMap ReadWebArgs(const std::vector<u8>& web_arg, WebArgHeader& web_arg_header) {
std::memcpy(&web_arg_header, web_arg.data(), sizeof(WebArgHeader));
if (web_arg.size() == sizeof(WebArgHeader)) {
return {};
}
WebArgInputTLVMap input_tlv_map;
u64 current_offset = sizeof(WebArgHeader);
for (std::size_t i = 0; i < web_arg_header.total_tlv_entries; ++i) {
if (web_arg.size() < current_offset + sizeof(WebArgInputTLV)) {
return input_tlv_map;
}
WebArgInputTLV input_tlv;
std::memcpy(&input_tlv, web_arg.data() + current_offset, sizeof(WebArgInputTLV));
current_offset += sizeof(WebArgInputTLV);
if (web_arg.size() < current_offset + input_tlv.arg_data_size) {
return input_tlv_map;
}
std::vector<u8> data(input_tlv.arg_data_size);
std::memcpy(data.data(), web_arg.data() + current_offset, input_tlv.arg_data_size);
current_offset += input_tlv.arg_data_size;
input_tlv_map.insert_or_assign(input_tlv.input_tlv_type, std::move(data));
}
return input_tlv_map;
}
FileSys::VirtualFile GetOfflineRomFS(Core::System& system, u64 title_id,
FileSys::ContentRecordType nca_type) {
if (nca_type == FileSys::ContentRecordType::Data) {
const auto nca =
system.GetFileSystemController().GetSystemNANDContents()->GetEntry(title_id, nca_type);
if (nca == nullptr) {
LOG_ERROR(Service_AM,
"NCA of type={} with title_id={:016X} is not found in the System NAND!",
nca_type, title_id);
return FileSys::SystemArchive::SynthesizeSystemArchive(title_id);
}
return nca->GetRomFS();
} else {
const auto nca = system.GetContentProvider().GetEntry(title_id, nca_type);
if (nca == nullptr) {
if (nca_type == FileSys::ContentRecordType::HtmlDocument) {
LOG_WARNING(Service_AM, "Falling back to AppLoader to get the RomFS.");
FileSys::VirtualFile romfs;
system.GetAppLoader().ReadManualRomFS(romfs);
if (romfs != nullptr) {
return romfs;
}
}
LOG_ERROR(Service_AM,
"NCA of type={} with title_id={:016X} is not found in the ContentProvider!",
nca_type, title_id);
return nullptr;
}
const FileSys::PatchManager pm{title_id, system.GetFileSystemController(),
system.GetContentProvider()};
return pm.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), nca_type);
}
}
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",
};
const auto fonts_dir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::CacheDir) / "fonts";
for (std::size_t i = 0; i < NS::SHARED_FONTS.size(); ++i) {
const auto font_file_path = fonts_dir / DECRYPTED_SHARED_FONTS[i];
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(
Common::FS::PathToUTF8String(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_, LibraryAppletMode applet_mode_,
const Core::Frontend::WebBrowserApplet& frontend_)
: Applet{system_, applet_mode_}, frontend(frontend_), system{system_} {}
WebBrowser::~WebBrowser() = default;
void WebBrowser::Initialize() {
Applet::Initialize();
LOG_INFO(Service_AM, "Initializing Web Browser Applet.");
LOG_DEBUG(Service_AM,
"Initializing Applet with common_args: arg_version={}, lib_version={}, "
"play_startup_sound={}, size={}, system_tick={}, theme_color={}",
common_args.arguments_version, common_args.library_version,
common_args.play_startup_sound, common_args.size, common_args.system_tick,
common_args.theme_color);
web_applet_version = WebAppletVersion{common_args.library_version};
const auto web_arg_storage = broker.PopNormalDataToApplet();
ASSERT(web_arg_storage != nullptr);
const auto& web_arg = web_arg_storage->GetData();
ASSERT_OR_EXECUTE(web_arg.size() >= sizeof(WebArgHeader), { return; });
web_arg_input_tlv_map = ReadWebArgs(web_arg, web_arg_header);
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();
break;
case ShimKind::Login:
InitializeLogin();
break;
case ShimKind::Offline:
InitializeOffline();
break;
case ShimKind::Share:
InitializeShare();
break;
case ShimKind::Web:
InitializeWeb();
break;
case ShimKind::Wifi:
InitializeWifi();
break;
case ShimKind::Lobby:
InitializeLobby();
break;
default:
UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
break;
}
}
bool WebBrowser::TransactionComplete() const {
return complete;
}
ResultCode WebBrowser::GetStatus() const {
return status;
}
void WebBrowser::ExecuteInteractive() {
UNIMPLEMENTED_MSG("WebSession is not implemented");
}
void WebBrowser::Execute() {
switch (web_arg_header.shim_kind) {
case ShimKind::Shop:
ExecuteShop();
break;
case ShimKind::Login:
ExecuteLogin();
break;
case ShimKind::Offline:
ExecuteOffline();
break;
case ShimKind::Share:
ExecuteShare();
break;
case ShimKind::Web:
ExecuteWeb();
break;
case ShimKind::Wifi:
ExecuteWifi();
break;
case ShimKind::Lobby:
ExecuteLobby();
break;
default:
UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
WebBrowserExit(WebExitReason::EndButtonPressed);
break;
}
}
void WebBrowser::ExtractOfflineRomFS() {
LOG_DEBUG(Service_AM, "Extracting RomFS to {}",
Common::FS::PathToUTF8String(offline_cache_dir));
const auto extracted_romfs_dir =
FileSys::ExtractRomFS(offline_romfs, FileSys::RomFSExtractionType::SingleDiscard);
const auto temp_dir = system.GetFilesystem()->CreateDirectory(
Common::FS::PathToUTF8String(offline_cache_dir), FileSys::Mode::ReadWrite);
FileSys::VfsRawCopyD(extracted_romfs_dir, temp_dir);
}
void WebBrowser::WebBrowserExit(WebExitReason exit_reason, std::string last_url) {
if ((web_arg_header.shim_kind == ShimKind::Share &&
web_applet_version >= WebAppletVersion::Version196608) ||
(web_arg_header.shim_kind == ShimKind::Web &&
web_applet_version >= WebAppletVersion::Version524288)) {
// TODO: Push Output TLVs instead of a WebCommonReturnValue
}
WebCommonReturnValue web_common_return_value;
web_common_return_value.exit_reason = exit_reason;
std::memcpy(&web_common_return_value.last_url, last_url.data(), last_url.size());
web_common_return_value.last_url_size = last_url.size();
LOG_DEBUG(Service_AM, "WebCommonReturnValue: exit_reason={}, last_url={}, last_url_size={}",
exit_reason, last_url, last_url.size());
complete = true;
std::vector<u8> out_data(sizeof(WebCommonReturnValue));
std::memcpy(out_data.data(), &web_common_return_value, out_data.size());
broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(out_data)));
broker.SignalStateChanged();
}
bool WebBrowser::InputTLVExistsInMap(WebArgInputTLVType input_tlv_type) const {
return web_arg_input_tlv_map.find(input_tlv_type) != web_arg_input_tlv_map.end();
}
std::optional<std::vector<u8>> WebBrowser::GetInputTLVData(WebArgInputTLVType input_tlv_type) {
const auto map_it = web_arg_input_tlv_map.find(input_tlv_type);
if (map_it == web_arg_input_tlv_map.end()) {
return std::nullopt;
}
return map_it->second;
}
void WebBrowser::InitializeShop() {}
void WebBrowser::InitializeLogin() {}
void WebBrowser::InitializeOffline() {
const auto document_path =
ParseStringValue(GetInputTLVData(WebArgInputTLVType::DocumentPath).value());
const auto document_kind =
ParseRawValue<DocumentKind>(GetInputTLVData(WebArgInputTLVType::DocumentKind).value());
std::string additional_paths;
switch (document_kind) {
case DocumentKind::OfflineHtmlPage:
default:
title_id = system.CurrentProcess()->GetProgramID();
nca_type = FileSys::ContentRecordType::HtmlDocument;
additional_paths = "html-document";
break;
case DocumentKind::ApplicationLegalInformation:
title_id = ParseRawValue<u64>(GetInputTLVData(WebArgInputTLVType::ApplicationID).value());
nca_type = FileSys::ContentRecordType::LegalInformation;
break;
case DocumentKind::SystemDataPage:
title_id = ParseRawValue<u64>(GetInputTLVData(WebArgInputTLVType::SystemDataID).value());
nca_type = FileSys::ContentRecordType::Data;
break;
}
static constexpr std::array<const char*, 3> RESOURCE_TYPES{
"manual",
"legal_information",
"system_data",
};
offline_cache_dir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::CacheDir) /
fmt::format("offline_web_applet_{}/{:016X}",
RESOURCE_TYPES[static_cast<u32>(document_kind) - 1], title_id);
offline_document = Common::FS::ConcatPathSafe(
offline_cache_dir, fmt::format("{}/{}", additional_paths, document_path));
}
void WebBrowser::InitializeShare() {}
void WebBrowser::InitializeWeb() {
external_url = ParseStringValue(GetInputTLVData(WebArgInputTLVType::InitialURL).value());
// Resolve Nintendo CDN URLs.
external_url = ResolveURL(external_url);
}
void WebBrowser::InitializeWifi() {}
void WebBrowser::InitializeLobby() {}
void WebBrowser::ExecuteShop() {
LOG_WARNING(Service_AM, "(STUBBED) called, Shop Applet is not implemented");
WebBrowserExit(WebExitReason::EndButtonPressed);
}
void WebBrowser::ExecuteLogin() {
LOG_WARNING(Service_AM, "(STUBBED) called, Login Applet is not implemented");
WebBrowserExit(WebExitReason::EndButtonPressed);
}
void WebBrowser::ExecuteOffline() {
const auto main_url = GetMainURL(Common::FS::PathToUTF8String(offline_document));
if (!Common::FS::Exists(main_url)) {
offline_romfs = GetOfflineRomFS(system, title_id, nca_type);
if (offline_romfs == nullptr) {
LOG_ERROR(Service_AM,
"RomFS with title_id={:016X} and nca_type={} cannot be extracted!", title_id,
nca_type);
WebBrowserExit(WebExitReason::WindowClosed);
return;
}
}
LOG_INFO(Service_AM, "Opening offline document at {}",
Common::FS::PathToUTF8String(offline_document));
frontend.OpenLocalWebPage(
Common::FS::PathToUTF8String(offline_document), [this] { ExtractOfflineRomFS(); },
[this](WebExitReason exit_reason, std::string last_url) {
WebBrowserExit(exit_reason, last_url);
});
}
void WebBrowser::ExecuteShare() {
LOG_WARNING(Service_AM, "(STUBBED) called, Share Applet is not implemented");
WebBrowserExit(WebExitReason::EndButtonPressed);
}
void WebBrowser::ExecuteWeb() {
LOG_INFO(Service_AM, "Opening external URL at {}", external_url);
frontend.OpenExternalWebPage(external_url,
[this](WebExitReason exit_reason, std::string last_url) {
WebBrowserExit(exit_reason, last_url);
});
}
void WebBrowser::ExecuteWifi() {
LOG_WARNING(Service_AM, "(STUBBED) called, Wifi Applet is not implemented");
WebBrowserExit(WebExitReason::EndButtonPressed);
}
void WebBrowser::ExecuteLobby() {
LOG_WARNING(Service_AM, "(STUBBED) called, Lobby Applet is not implemented");
WebBrowserExit(WebExitReason::EndButtonPressed);
}
} // namespace Service::AM::Applets
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