bcat: Add BCAT backend for Boxcat service
Downloads content from yuzu servers and unpacks it into the temporary directory provided. Fully supports all Backend features except passphrase.
This commit is contained in:
Zach Hilman
parent
2c0b75a744
commit
2903f3524e
351
src/core/hle/service/bcat/backend/boxcat.cpp
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351
src/core/hle/service/bcat/backend/boxcat.cpp
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// Copyright 2019 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <fmt/ostream.h>
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#include <httplib.h>
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#include <json.hpp>
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#include <mbedtls/sha256.h>
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#include "common/hex_util.h"
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#include "common/logging/backend.h"
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#include "common/logging/log.h"
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#include "core/core.h"
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#include "core/file_sys/vfs.h"
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#include "core/file_sys/vfs_libzip.h"
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#include "core/file_sys/vfs_vector.h"
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#include "core/frontend/applets/error.h"
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#include "core/hle/lock.h"
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#include "core/hle/service/am/applets/applets.h"
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#include "core/hle/service/bcat/backend/boxcat.h"
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#include "core/settings.h"
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namespace Service::BCAT {
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constexpr char BOXCAT_HOSTNAME[] = "api.yuzu-emu.org";
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// Formatted using fmt with arg[0] = hex title id
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constexpr char BOXCAT_PATHNAME_DATA[] = "/boxcat/titles/{:016X}/data";
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constexpr char BOXCAT_PATHNAME_EVENTS[] = "/boxcat/events";
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constexpr char BOXCAT_API_VERSION[] = "1";
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// HTTP status codes for Boxcat
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enum class ResponseStatus {
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BadClientVersion = 301, ///< The Boxcat-Client-Version doesn't match the server.
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NoUpdate = 304, ///< The digest provided would match the new data, no need to update.
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NoMatchTitleId = 404, ///< The title ID provided doesn't have a boxcat implementation.
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NoMatchBuildId = 406, ///< The build ID provided is blacklisted (potentially because of format
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///< issues or whatnot) and has no data.
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};
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enum class DownloadResult {
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Success = 0,
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NoResponse,
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GeneralWebError,
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NoMatchTitleId,
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NoMatchBuildId,
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InvalidContentType,
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GeneralFSError,
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BadClientVersion,
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};
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constexpr std::array<const char*, 8> DOWNLOAD_RESULT_LOG_MESSAGES{
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"Success",
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"There was no response from the server.",
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"There was a general web error code returned from the server.",
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"The title ID of the current game doesn't have a boxcat implementation. If you believe an "
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"implementation should be added, contact yuzu support.",
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"The build ID of the current version of the game is marked as incompatible with the current "
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"BCAT distribution. Try upgrading or downgrading your game version or contacting yuzu support.",
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"The content type of the web response was invalid.",
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"There was a general filesystem error while saving the zip file.",
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"The server is either too new or too old to serve the request. Try using the latest version of "
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"an official release of yuzu.",
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};
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std::ostream& operator<<(std::ostream& os, DownloadResult result) {
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return os << DOWNLOAD_RESULT_LOG_MESSAGES.at(static_cast<std::size_t>(result));
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}
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constexpr u32 PORT = 443;
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constexpr u32 TIMEOUT_SECONDS = 30;
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constexpr u64 VFS_COPY_BLOCK_SIZE = 1ull << 24; // 4MB
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namespace {
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std::string GetZIPFilePath(u64 title_id) {
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return fmt::format("{}bcat/{:016X}/data.zip",
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FileUtil::GetUserPath(FileUtil::UserPath::CacheDir), title_id);
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}
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// If the error is something the user should know about (build ID mismatch, bad client version),
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// display an error.
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void HandleDownloadDisplayResult(DownloadResult res) {
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if (res == DownloadResult::Success || res == DownloadResult::NoResponse ||
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res == DownloadResult::GeneralWebError || res == DownloadResult::GeneralFSError ||
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res == DownloadResult::NoMatchTitleId || res == DownloadResult::InvalidContentType) {
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return;
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}
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const auto& frontend{Core::System::GetInstance().GetAppletManager().GetAppletFrontendSet()};
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frontend.error->ShowCustomErrorText(
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ResultCode(-1), "There was an error while attempting to use Boxcat.",
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DOWNLOAD_RESULT_LOG_MESSAGES[static_cast<std::size_t>(res)], [] {});
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}
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} // namespace
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class Boxcat::Client {
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public:
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Client(std::string zip_path, u64 title_id, u64 build_id)
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: zip_path(std::move(zip_path)), title_id(title_id), build_id(build_id) {}
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DownloadResult Download() {
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const auto resolved_path = fmt::format(BOXCAT_PATHNAME_DATA, title_id);
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if (client == nullptr) {
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client = std::make_unique<httplib::SSLClient>(BOXCAT_HOSTNAME, PORT, TIMEOUT_SECONDS);
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}
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httplib::Headers headers{
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{std::string("Boxcat-Client-Version"), std::string(BOXCAT_API_VERSION)},
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{std::string("Boxcat-Build-Id"), fmt::format("{:016X}", build_id)},
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};
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if (FileUtil::Exists(zip_path)) {
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FileUtil::IOFile file{zip_path, "rb"};
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std::vector<u8> bytes(file.GetSize());
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file.ReadBytes(bytes.data(), bytes.size());
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const auto digest = DigestFile(bytes);
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headers.insert({std::string("Boxcat-Current-Zip-Digest"),
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Common::HexArrayToString(digest, false)});
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}
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const auto response = client->Get(resolved_path.c_str(), headers);
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if (response == nullptr)
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return DownloadResult::NoResponse;
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if (response->status == static_cast<int>(ResponseStatus::NoUpdate))
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return DownloadResult::Success;
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if (response->status == static_cast<int>(ResponseStatus::BadClientVersion))
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return DownloadResult::BadClientVersion;
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if (response->status == static_cast<int>(ResponseStatus::NoMatchTitleId))
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return DownloadResult::NoMatchTitleId;
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if (response->status == static_cast<int>(ResponseStatus::NoMatchBuildId))
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return DownloadResult::NoMatchBuildId;
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if (response->status >= 400)
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return DownloadResult::GeneralWebError;
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const auto content_type = response->headers.find("content-type");
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if (content_type == response->headers.end() ||
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content_type->second.find("application/zip") == std::string::npos) {
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return DownloadResult::InvalidContentType;
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}
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FileUtil::CreateFullPath(zip_path);
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FileUtil::IOFile file{zip_path, "wb"};
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if (!file.IsOpen())
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return DownloadResult::GeneralFSError;
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if (!file.Resize(response->body.size()))
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return DownloadResult::GeneralFSError;
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if (file.WriteBytes(response->body.data(), response->body.size()) != response->body.size())
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return DownloadResult::GeneralFSError;
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return DownloadResult::Success;
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}
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private:
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using Digest = std::array<u8, 0x20>;
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static Digest DigestFile(std::vector<u8> bytes) {
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Digest out{};
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mbedtls_sha256(bytes.data(), bytes.size(), out.data(), 0);
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return out;
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}
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std::unique_ptr<httplib::Client> client;
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std::string zip_path;
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u64 title_id;
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u64 build_id;
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};
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Boxcat::Boxcat(DirectoryGetter getter) : Backend(std::move(getter)) {}
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Boxcat::~Boxcat() = default;
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void SynchronizeInternal(DirectoryGetter dir_getter, TitleIDVersion title,
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CompletionCallback callback, std::optional<std::string> dir_name = {}) {
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const auto failure = [&callback] {
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// Acquire the HLE mutex
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std::lock_guard lock{HLE::g_hle_lock};
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callback(false);
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};
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if (Settings::values.bcat_boxcat_local) {
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LOG_INFO(Service_BCAT, "Boxcat using local data by override, skipping download.");
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// Acquire the HLE mutex
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std::lock_guard lock{HLE::g_hle_lock};
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callback(true);
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return;
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}
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const auto zip_path{GetZIPFilePath(title.title_id)};
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Boxcat::Client client{zip_path, title.title_id, title.build_id};
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const auto res = client.Download();
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if (res != DownloadResult::Success) {
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LOG_ERROR(Service_BCAT, "Boxcat synchronization failed with error '{}'!", res);
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HandleDownloadDisplayResult(res);
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failure();
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return;
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}
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FileUtil::IOFile zip{zip_path, "rb"};
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const auto size = zip.GetSize();
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std::vector<u8> bytes(size);
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if (size == 0 || zip.ReadBytes(bytes.data(), bytes.size()) != bytes.size()) {
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LOG_ERROR(Service_BCAT, "Boxcat failed to read ZIP file at path '{}'!", zip_path);
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failure();
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return;
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}
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const auto extracted = FileSys::ExtractZIP(std::make_shared<FileSys::VectorVfsFile>(bytes));
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if (extracted == nullptr) {
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LOG_ERROR(Service_BCAT, "Boxcat failed to extract ZIP file!");
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failure();
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return;
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}
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if (dir_name == std::nullopt) {
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const auto target_dir = dir_getter(title.title_id);
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if (target_dir == nullptr ||
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!FileSys::VfsRawCopyD(extracted, target_dir, VFS_COPY_BLOCK_SIZE)) {
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LOG_ERROR(Service_BCAT, "Boxcat failed to copy extracted ZIP to target directory!");
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failure();
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return;
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}
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} else {
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const auto target_dir = dir_getter(title.title_id);
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if (target_dir == nullptr) {
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LOG_ERROR(Service_BCAT, "Boxcat failed to get directory for title ID!");
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failure();
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return;
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}
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const auto target_sub = target_dir->GetSubdirectory(*dir_name);
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const auto source_sub = extracted->GetSubdirectory(*dir_name);
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if (target_sub == nullptr || source_sub == nullptr ||
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!FileSys::VfsRawCopyD(source_sub, target_sub, VFS_COPY_BLOCK_SIZE)) {
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LOG_ERROR(Service_BCAT, "Boxcat failed to copy extracted ZIP to target directory!");
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failure();
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return;
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}
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}
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// Acquire the HLE mutex
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std::lock_guard lock{HLE::g_hle_lock};
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callback(true);
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}
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bool Boxcat::Synchronize(TitleIDVersion title, CompletionCallback callback) {
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is_syncing.exchange(true);
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std::thread(&SynchronizeInternal, dir_getter, title, callback, std::nullopt).detach();
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return true;
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}
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bool Boxcat::SynchronizeDirectory(TitleIDVersion title, std::string name,
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CompletionCallback callback) {
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is_syncing.exchange(true);
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std::thread(&SynchronizeInternal, dir_getter, title, callback, name).detach();
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return true;
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}
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bool Boxcat::Clear(u64 title_id) {
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if (Settings::values.bcat_boxcat_local) {
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LOG_INFO(Service_BCAT, "Boxcat using local data by override, skipping clear.");
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return true;
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}
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const auto dir = dir_getter(title_id);
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std::vector<std::string> dirnames;
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for (const auto& subdir : dir->GetSubdirectories())
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dirnames.push_back(subdir->GetName());
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for (const auto& subdir : dirnames) {
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if (!dir->DeleteSubdirectoryRecursive(subdir))
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return false;
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}
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return true;
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}
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void Boxcat::SetPassphrase(u64 title_id, const Passphrase& passphrase) {
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LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
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Common::HexArrayToString(passphrase));
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}
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Boxcat::StatusResult Boxcat::GetStatus(std::optional<std::string>& global,
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std::map<std::string, EventStatus>& games) {
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httplib::SSLClient client{BOXCAT_HOSTNAME, static_cast<int>(PORT),
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static_cast<int>(TIMEOUT_SECONDS)};
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httplib::Headers headers{
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{std::string("Boxcat-Client-Version"), std::string(BOXCAT_API_VERSION)},
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};
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const auto response = client.Get(BOXCAT_PATHNAME_EVENTS, headers);
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if (response == nullptr)
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return StatusResult::Offline;
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if (response->status == static_cast<int>(ResponseStatus::BadClientVersion))
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return StatusResult::BadClientVersion;
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try {
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nlohmann::json json = nlohmann::json::parse(response->body);
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if (!json["online"].get<bool>())
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return StatusResult::Offline;
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if (json["global"].is_null())
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global = std::nullopt;
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else
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global = json["global"].get<std::string>();
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if (json["games"].is_array()) {
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for (const auto object : json["games"]) {
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if (object.is_object() && object.find("name") != object.end()) {
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EventStatus detail{};
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if (object["header"].is_string()) {
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detail.header = object["header"].get<std::string>();
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} else {
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detail.header = std::nullopt;
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}
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if (object["footer"].is_string()) {
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detail.footer = object["footer"].get<std::string>();
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} else {
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detail.footer = std::nullopt;
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}
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if (object["events"].is_array()) {
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for (const auto& event : object["events"]) {
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if (!event.is_string())
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continue;
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detail.events.push_back(event.get<std::string>());
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}
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}
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games.insert_or_assign(object["name"], std::move(detail));
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}
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}
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}
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return StatusResult::Success;
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} catch (const nlohmann::json::parse_error& e) {
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return StatusResult::ParseError;
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}
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}
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} // namespace Service::BCAT
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56
src/core/hle/service/bcat/backend/boxcat.h
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56
src/core/hle/service/bcat/backend/boxcat.h
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// Copyright 2019 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <atomic>
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#include <map>
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#include <optional>
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#include "core/hle/service/bcat/backend/backend.h"
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namespace Service::BCAT {
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struct EventStatus {
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std::optional<std::string> header;
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std::optional<std::string> footer;
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std::vector<std::string> events;
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};
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/// Boxcat is yuzu's custom backend implementation of Nintendo's BCAT service. It is free to use and
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/// doesn't require a switch or nintendo account. The content is controlled by the yuzu team.
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class Boxcat final : public Backend {
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friend void SynchronizeInternal(DirectoryGetter dir_getter, TitleIDVersion title,
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CompletionCallback callback,
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std::optional<std::string> dir_name);
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public:
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explicit Boxcat(DirectoryGetter getter);
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~Boxcat() override;
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bool Synchronize(TitleIDVersion title, CompletionCallback callback) override;
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bool SynchronizeDirectory(TitleIDVersion title, std::string name,
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CompletionCallback callback) override;
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bool Clear(u64 title_id) override;
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void SetPassphrase(u64 title_id, const Passphrase& passphrase) override;
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enum class StatusResult {
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Success,
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Offline,
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ParseError,
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BadClientVersion,
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};
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static StatusResult GetStatus(std::optional<std::string>& global,
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std::map<std::string, EventStatus>& games);
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private:
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std::atomic_bool is_syncing{false};
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class Client;
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std::unique_ptr<Client> client;
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};
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} // namespace Service::BCAT
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