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128 lines
3.7 KiB
C++
128 lines
3.7 KiB
C++
// Copyright 2020 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "DiscIO/VolumeDisc.h"
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#include <memory>
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#include <optional>
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#include <string>
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#include <vector>
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#include "Common/CommonTypes.h"
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#include "Common/Crypto/SHA1.h"
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#include "DiscIO/DiscUtils.h"
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#include "DiscIO/Enums.h"
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#include "DiscIO/Filesystem.h"
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namespace DiscIO
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{
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std::string VolumeDisc::GetGameID(const Partition& partition) const
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{
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char id[6];
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if (!Read(0, sizeof(id), reinterpret_cast<u8*>(id), partition))
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return std::string();
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return DecodeString(id);
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}
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Country VolumeDisc::GetCountry(const Partition& partition) const
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{
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// The 0 that we use as a default value is mapped to Country::Unknown and Region::Unknown
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const u8 country_byte = ReadSwapped<u8>(3, partition).value_or(0);
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const Region region = GetRegion();
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const std::optional<u16> revision = GetRevision();
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if (CountryCodeToRegion(country_byte, GetVolumeType(), region, revision) != region)
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return TypicalCountryForRegion(region);
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return CountryCodeToCountry(country_byte, GetVolumeType(), region, revision);
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}
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Region VolumeDisc::RegionCodeToRegion(std::optional<u32> region_code) const
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{
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if (!region_code)
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return Region::Unknown;
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const Region region = static_cast<Region>(*region_code);
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return region <= Region::NTSC_K ? region : Region::Unknown;
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}
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std::string VolumeDisc::GetMakerID(const Partition& partition) const
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{
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char maker_id[2];
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if (!Read(0x4, sizeof(maker_id), reinterpret_cast<u8*>(&maker_id), partition))
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return std::string();
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return DecodeString(maker_id);
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}
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std::optional<u16> VolumeDisc::GetRevision(const Partition& partition) const
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{
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std::optional<u8> revision = ReadSwapped<u8>(7, partition);
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return revision ? *revision : std::optional<u16>();
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}
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std::string VolumeDisc::GetInternalName(const Partition& partition) const
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{
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char name[0x60];
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if (!Read(0x20, sizeof(name), reinterpret_cast<u8*>(&name), partition))
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return std::string();
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return DecodeString(name);
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}
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std::string VolumeDisc::GetApploaderDate(const Partition& partition) const
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{
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char date[16];
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if (!Read(0x2440, sizeof(date), reinterpret_cast<u8*>(&date), partition))
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return std::string();
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return DecodeString(date);
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}
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std::optional<u8> VolumeDisc::GetDiscNumber(const Partition& partition) const
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{
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return ReadSwapped<u8>(6, partition);
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}
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bool VolumeDisc::IsNKit() const
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{
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constexpr u32 NKIT_MAGIC = 0x4E4B4954; // "NKIT"
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return ReadSwapped<u32>(0x200, PARTITION_NONE) == NKIT_MAGIC;
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}
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void VolumeDisc::AddGamePartitionToSyncHash(Common::SHA1::Context* context) const
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{
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const Partition partition = GetGamePartition();
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// All headers at the beginning of the partition, plus the apploader
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ReadAndAddToSyncHash(context, 0, 0x2440 + GetApploaderSize(*this, partition).value_or(0),
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partition);
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// Boot DOL (may be missing if this is a Datel disc)
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const std::optional<u64> dol_offset = GetBootDOLOffset(*this, partition);
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if (dol_offset)
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{
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ReadAndAddToSyncHash(context, *dol_offset,
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GetBootDOLSize(*this, partition, *dol_offset).value_or(0), partition);
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}
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// File system
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const std::optional<u64> fst_offset = GetFSTOffset(*this, partition);
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if (fst_offset)
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ReadAndAddToSyncHash(context, *fst_offset, GetFSTSize(*this, partition).value_or(0), partition);
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// opening.bnr (name and banner)
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const FileSystem* file_system = GetFileSystem(partition);
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if (file_system)
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{
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std::unique_ptr<FileInfo> file_info = file_system->FindFileInfo("opening.bnr");
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if (file_info && !file_info->IsDirectory())
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ReadAndAddToSyncHash(context, file_info->GetOffset(), file_info->GetSize(), partition);
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}
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}
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} // namespace DiscIO
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