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7de0d51345
These functions don't actually depend on any state from the class instance, so they don't really belong in the header, and are just an implementation detail.
103 lines
2.6 KiB
C++
103 lines
2.6 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 <string>
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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 "Common/MathUtil.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(IBlobReader& 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(const CBlobBigEndianReader& reader)
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{
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u32 header_size = 0;
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u32 header_type = 0;
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reader.ReadSwapped(0x0, &header_size);
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reader.ReadSwapped(0x4, &header_type);
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return header_size == 0x20 && (header_type == 0x49730000 || header_type == 0x69620000);
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}
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} // Anonymous namespace
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WiiWAD::WiiWAD(const std::string& name)
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{
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std::unique_ptr<IBlobReader> reader(CreateBlobReader(name));
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if (reader == nullptr || File::IsDirectory(name))
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{
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m_valid = false;
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return;
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}
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m_valid = ParseWAD(*reader);
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}
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WiiWAD::~WiiWAD()
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{
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}
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bool WiiWAD::ParseWAD(IBlobReader& reader)
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{
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CBlobBigEndianReader big_endian_reader(reader);
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if (!IsWiiWAD(big_endian_reader))
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return false;
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u32 certificate_chain_size;
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u32 reserved;
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u32 ticket_size;
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u32 tmd_size;
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u32 data_app_size;
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u32 footer_size;
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if (!big_endian_reader.ReadSwapped(0x08, &certificate_chain_size) ||
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!big_endian_reader.ReadSwapped(0x0C, &reserved) ||
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!big_endian_reader.ReadSwapped(0x10, &ticket_size) ||
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!big_endian_reader.ReadSwapped(0x14, &tmd_size) ||
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!big_endian_reader.ReadSwapped(0x18, &data_app_size) ||
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!big_endian_reader.ReadSwapped(0x1C, &footer_size))
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return false;
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if (MAX_LOGLEVEL >= LogTypes::LOG_LEVELS::LDEBUG)
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_dbg_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(reader, certificate_chain_size, offset);
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offset += ROUND_UP(certificate_chain_size, 0x40);
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m_ticket = CreateWADEntry(reader, ticket_size, offset);
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offset += ROUND_UP(ticket_size, 0x40);
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m_tmd = CreateWADEntry(reader, tmd_size, offset);
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offset += ROUND_UP(tmd_size, 0x40);
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m_data_app = CreateWADEntry(reader, data_app_size, offset);
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offset += ROUND_UP(data_app_size, 0x40);
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m_footer = CreateWADEntry(reader, footer_size, offset);
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offset += ROUND_UP(footer_size, 0x40);
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return true;
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}
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} // namespace DiscIO
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