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142 lines
4.1 KiB
C++
142 lines
4.1 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "DiscIO/Volume.h"
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#include <algorithm>
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#include <map>
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#include <memory>
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#include <optional>
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#include <string>
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#include <type_traits>
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#include <utility>
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#include <vector>
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#include <mbedtls/sha1.h>
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#include "Common/CommonTypes.h"
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#include "Common/StringUtil.h"
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#include "Core/IOS/ES/Formats.h"
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#include "DiscIO/Blob.h"
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#include "DiscIO/DiscUtils.h"
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#include "DiscIO/Enums.h"
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#include "DiscIO/VolumeDisc.h"
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#include "DiscIO/VolumeGC.h"
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#include "DiscIO/VolumeWad.h"
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#include "DiscIO/VolumeWii.h"
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namespace DiscIO
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{
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const IOS::ES::TicketReader Volume::INVALID_TICKET{};
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const IOS::ES::TMDReader Volume::INVALID_TMD{};
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const std::vector<u8> Volume::INVALID_CERT_CHAIN{};
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template <typename T>
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static void AddToSyncHash(mbedtls_sha1_context* context, const T& data)
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{
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static_assert(std::is_trivially_copyable_v<T>);
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mbedtls_sha1_update_ret(context, reinterpret_cast<const u8*>(&data), sizeof(data));
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}
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void Volume::ReadAndAddToSyncHash(mbedtls_sha1_context* context, u64 offset, u64 length,
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const Partition& partition) const
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{
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std::vector<u8> buffer(length);
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if (Read(offset, length, buffer.data(), partition))
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mbedtls_sha1_update_ret(context, buffer.data(), buffer.size());
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}
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void Volume::AddTMDToSyncHash(mbedtls_sha1_context* context, const Partition& partition) const
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{
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// We want to hash some important parts of the TMD, but nothing that changes when fakesigning.
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// (Fakesigned WADs are very popular, and we don't want people with properly signed WADs to
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// unnecessarily be at a disadvantage due to most netplay partners having fakesigned WADs.)
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const IOS::ES::TMDReader& tmd = GetTMD(partition);
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if (!tmd.IsValid())
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return;
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AddToSyncHash(context, tmd.GetIOSId());
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AddToSyncHash(context, tmd.GetTitleId());
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AddToSyncHash(context, tmd.GetTitleFlags());
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AddToSyncHash(context, tmd.GetGroupId());
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AddToSyncHash(context, tmd.GetRegion());
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AddToSyncHash(context, tmd.GetTitleVersion());
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AddToSyncHash(context, tmd.GetBootIndex());
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for (const IOS::ES::Content& content : tmd.GetContents())
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AddToSyncHash(context, content);
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}
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std::map<Language, std::string> Volume::ReadWiiNames(const std::vector<char16_t>& data)
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{
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std::map<Language, std::string> names;
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for (size_t i = 0; i < NUMBER_OF_LANGUAGES; ++i)
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{
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const size_t name_start = NAME_CHARS_LENGTH * i;
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if (name_start + NAME_CHARS_LENGTH <= data.size())
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{
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const std::string name = UTF16BEToUTF8(data.data() + name_start, NAME_CHARS_LENGTH);
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if (!name.empty())
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names[static_cast<Language>(i)] = name;
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}
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}
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return names;
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}
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static std::unique_ptr<VolumeDisc> CreateDisc(std::unique_ptr<BlobReader>& reader)
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{
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if (reader->ReadSwapped<u32>(0x18) == WII_DISC_MAGIC)
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return std::make_unique<VolumeWii>(std::move(reader));
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if (reader->ReadSwapped<u32>(0x1C) == GAMECUBE_DISC_MAGIC)
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return std::make_unique<VolumeGC>(std::move(reader));
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// No known magic words found
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return nullptr;
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}
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std::unique_ptr<VolumeDisc> CreateDisc(const std::string& path)
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{
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std::unique_ptr<BlobReader> reader(CreateBlobReader(path));
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return reader ? CreateDisc(reader) : nullptr;
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}
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static std::unique_ptr<VolumeWAD> CreateWAD(std::unique_ptr<BlobReader>& reader)
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{
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// Check for WAD
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// 0x206962 for boot2 wads
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const std::optional<u32> wad_magic = reader->ReadSwapped<u32>(0x02);
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if (wad_magic == u32(0x00204973) || wad_magic == u32(0x00206962))
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return std::make_unique<VolumeWAD>(std::move(reader));
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// No known magic words found
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return nullptr;
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}
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std::unique_ptr<VolumeWAD> CreateWAD(const std::string& path)
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{
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std::unique_ptr<BlobReader> reader(CreateBlobReader(path));
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return reader ? CreateWAD(reader) : nullptr;
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}
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std::unique_ptr<Volume> CreateVolume(const std::string& path)
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{
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std::unique_ptr<BlobReader> reader(CreateBlobReader(path));
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if (reader == nullptr)
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return nullptr;
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std::unique_ptr<VolumeDisc> disc = CreateDisc(reader);
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if (disc)
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return disc;
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std::unique_ptr<VolumeWAD> wad = CreateWAD(reader);
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if (wad)
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return wad;
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return nullptr;
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}
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} // namespace DiscIO
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