93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
/****************************************************************************
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* Copyright (C) 2016-2021 Maschell
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include "WiiUPartition.h"
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#include <coreinit/debug.h>
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#include <memory>
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uint64_t WiiUPartition::getSectionOffsetOnDefaultPartition() {
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if (volumes.size() != 1) {
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OSFatal("We have more or less than 1 volume header.");
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}
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return volumes.begin()->first.getAddressInBytes();
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}
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std::optional<std::shared_ptr<WiiUPartition>> WiiUPartition::make_shared(const std::shared_ptr<DiscReader> &discReader, uint32_t offset, const DiscBlockSize &blockSize) {
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auto buffer = (uint8_t *) malloc(LENGTH);
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if (buffer == nullptr) {
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return {};
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}
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if (!discReader->hasDiscKey) {
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if (!discReader->readEncrypted(buffer, offset, LENGTH)) {
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return {};
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}
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} else {
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auto bufferBigger = (uint8_t *) malloc(LENGTH + 0x10);
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if (bufferBigger == nullptr) {
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return {};
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}
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if (!discReader->readDecrypted(bufferBigger, offset - 0x10, 0, LENGTH + 0x10, discReader->discKey, nullptr, true)) {
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return {};
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}
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memcpy(buffer, bufferBigger + 0x10, LENGTH);
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free(bufferBigger);
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}
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char name[32];
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memset(name, 0, sizeof(name));
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memcpy(name, buffer, 31);
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auto volumeId = name;
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uint8_t num = buffer[31];
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std::map<AddressInDiscBlocks, std::shared_ptr<VolumeHeader>> volumes;
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for (int i = 0; i < num; i++) {
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auto address = *((uint32_t *) &buffer[32 + (i * 4)]);
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AddressInDiscBlocks discLbaAddress = AddressInDiscBlocks(blockSize, address);
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auto vh = VolumeHeader::make_shared(discReader, discLbaAddress.getAddressInBytes());
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if (!vh.has_value()) {
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free(buffer);
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return {};
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}
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volumes[discLbaAddress] = vh.value();
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}
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auto fileSystemDescriptor = ((uint16_t *) &buffer[64])[0];
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free(buffer);
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return std::unique_ptr<WiiUPartition>(new WiiUPartition(
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volumeId,
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volumes,
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fileSystemDescriptor));
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}
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std::string WiiUPartition::getVolumeId() const & {
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return volumeId;
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}
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std::map<AddressInDiscBlocks, std::shared_ptr<VolumeHeader>> WiiUPartition::getVolumes() const & {
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return volumes;
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}
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uint16_t WiiUPartition::getFileSystemDescriptor() const {
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return fileSystemDescriptor;
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}
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WiiUPartition::~WiiUPartition() = default;
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