113 lines
3.2 KiB
C++
113 lines
3.2 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 <cstddef>
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#include <memory>
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#include <optional>
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#include <string>
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#include "Common/Align.h"
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#include "Common/Assert.h"
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#include "Common/CommonTypes.h"
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#include "Common/FileUtil.h"
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#include "Common/Logging/Log.h"
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#include "DiscIO/Blob.h"
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#include "DiscIO/WiiWad.h"
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namespace DiscIO
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{
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namespace
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{
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std::vector<u8> CreateWADEntry(BlobReader& reader, u32 size, u64 offset)
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{
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if (size == 0)
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return {};
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std::vector<u8> buffer(size);
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if (!reader.Read(offset, size, buffer.data()))
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{
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ERROR_LOG(DISCIO, "WiiWAD: Could not read from file");
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PanicAlertT("WiiWAD: Could not read from file");
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}
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return buffer;
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}
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bool IsWiiWAD(BlobReader& reader)
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{
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const std::optional<u32> header_size = reader.ReadSwapped<u32>(0x0);
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const std::optional<u32> header_type = reader.ReadSwapped<u32>(0x4);
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return header_size == u32(0x20) &&
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(header_type == u32(0x49730000) || header_type == u32(0x69620000));
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}
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} // Anonymous namespace
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WiiWAD::WiiWAD(const std::string& name) : WiiWAD(CreateBlobReader(name))
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{
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}
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WiiWAD::WiiWAD(std::unique_ptr<BlobReader> blob_reader) : m_reader(std::move(blob_reader))
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{
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if (m_reader)
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m_valid = ParseWAD();
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}
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WiiWAD::~WiiWAD() = default;
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bool WiiWAD::ParseWAD()
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{
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if (!IsWiiWAD(*m_reader))
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return false;
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std::optional<u32> certificate_chain_size = m_reader->ReadSwapped<u32>(0x08);
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std::optional<u32> reserved = m_reader->ReadSwapped<u32>(0x0C);
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std::optional<u32> ticket_size = m_reader->ReadSwapped<u32>(0x10);
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std::optional<u32> tmd_size = m_reader->ReadSwapped<u32>(0x14);
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std::optional<u32> data_app_size = m_reader->ReadSwapped<u32>(0x18);
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std::optional<u32> footer_size = m_reader->ReadSwapped<u32>(0x1C);
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if (!certificate_chain_size || !reserved || !ticket_size || !tmd_size || !data_app_size ||
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!footer_size)
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{
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return false;
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}
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if (MAX_LOGLEVEL >= LogTypes::LOG_LEVELS::LDEBUG)
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DEBUG_ASSERT_MSG(BOOT, *reserved == 0x00, "WiiWAD: Reserved must be 0x00");
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u32 offset = 0x40;
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m_certificate_chain = CreateWADEntry(*m_reader, *certificate_chain_size, offset);
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offset += Common::AlignUp(*certificate_chain_size, 0x40);
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m_ticket.SetBytes(CreateWADEntry(*m_reader, *ticket_size, offset));
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offset += Common::AlignUp(*ticket_size, 0x40);
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m_tmd.SetBytes(CreateWADEntry(*m_reader, *tmd_size, offset));
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offset += Common::AlignUp(*tmd_size, 0x40);
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m_data_app_offset = offset;
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m_data_app = CreateWADEntry(*m_reader, *data_app_size, offset);
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offset += Common::AlignUp(*data_app_size, 0x40);
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m_footer = CreateWADEntry(*m_reader, *footer_size, offset);
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offset += Common::AlignUp(*footer_size, 0x40);
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return true;
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}
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std::vector<u8> WiiWAD::GetContent(u16 index) const
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{
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u64 offset = m_data_app_offset;
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for (const IOS::ES::Content& content : m_tmd.GetContents())
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{
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const u64 aligned_size = Common::AlignUp(content.size, 0x40);
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if (content.index == index)
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{
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std::vector<u8> data(aligned_size);
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if (!m_reader->Read(offset, aligned_size, data.data()))
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return {};
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return data;
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}
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offset += aligned_size;
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}
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return {};
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}
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} // namespace DiscIO
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