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https://github.com/Atmosphere-NX/Atmosphere.git
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328 lines
15 KiB
C++
328 lines
15 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 <stratosphere.hpp>
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namespace ams::ncm {
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namespace {
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void ConvertPackageContentMetaHeaderToContentMetaHeader(ContentMetaHeader *dst, const PackagedContentMetaHeader &src) {
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/* Set destination. */
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*dst = {
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.extended_header_size = src.extended_header_size,
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.content_count = src.content_count,
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.content_meta_count = src.content_meta_count,
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.attributes = src.attributes,
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};
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}
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void ConvertPackageContentMetaHeaderToInstallContentMetaHeader(InstallContentMetaHeader *dst, const PackagedContentMetaHeader &src) {
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/* Set destination. */
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static_assert(std::is_same<InstallContentMetaHeader, PackagedContentMetaHeader>::value);
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std::memcpy(dst, std::addressof(src), sizeof(*dst));
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}
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void ConvertInstallContentMetaHeaderToContentMetaHeader(ContentMetaHeader *dst, const InstallContentMetaHeader &src) {
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/* Set destination. */
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*dst = {
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.extended_header_size = src.extended_header_size,
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.content_count = src.content_count,
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.content_meta_count = src.content_meta_count,
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.attributes = src.attributes,
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};
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}
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Result FindDeltaIndex(s32 *out_index, const PatchMetaExtendedDataReader &reader, u32 src_version, u32 dst_version) {
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/* Iterate over all deltas. */
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auto header = reader.GetHeader();
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for (s32 i = 0; i < static_cast<s32>(header->delta_count); i++) {
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/* Check if the current delta matches the versions. */
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auto delta = reader.GetPatchDeltaHeader(i);
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if ((src_version == 0 || delta->delta.source_version == src_version) && delta->delta.destination_version == dst_version) {
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*out_index = i;
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return ResultSuccess();
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}
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}
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/* We didn't find the delta. */
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return ncm::ResultDeltaNotFound();
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}
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s32 CountContentExceptForMeta(const PatchMetaExtendedDataReader &reader, s32 delta_index) {
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/* Iterate over packaged content infos, checking for those which aren't metas. */
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s32 count = 0;
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auto delta = reader.GetPatchDeltaHeader(delta_index);
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for (s32 i = 0; i < static_cast<s32>(delta->content_count); i++) {
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if (reader.GetPatchDeltaPackagedContentInfo(delta_index, i)->GetType() != ContentType::Meta) {
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count++;
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}
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}
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return count;
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}
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}
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size_t PackagedContentMetaReader::CalculateConvertInstallContentMetaSize() const {
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/* Prepare the header. */
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const auto *header = this->GetHeader();
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if ((header->type == ContentMetaType::SystemUpdate && this->GetExtendedHeaderSize() > 0) || header->type == ContentMetaType::Delta) {
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/* Newer SystemUpdates and Deltas contain extended data. */
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return this->CalculateSizeImpl<InstallContentMetaHeader, InstallContentInfo>(header->extended_header_size, header->content_count + 1, header->content_meta_count, this->GetExtendedDataSize(), false);
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} else if (header->type == ContentMetaType::Patch) {
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/* Subtract the number of delta fragments for patches, include extended data. */
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return this->CalculateSizeImpl<InstallContentMetaHeader, InstallContentInfo>(header->extended_header_size, header->content_count - this->CountDeltaFragments() + 1, header->content_meta_count, this->GetExtendedDataSize(), false);
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}
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/* No extended data or delta fragments by default. */
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return this->CalculateSizeImpl<InstallContentMetaHeader, InstallContentInfo>(header->extended_header_size, header->content_count + 1, header->content_meta_count, 0, false);
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}
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size_t PackagedContentMetaReader::CountDeltaFragments() const {
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size_t count = 0;
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for (size_t i = 0; i < this->GetContentCount(); i++) {
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if (this->GetContentInfo(i)->GetType() == ContentType::DeltaFragment) {
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count++;
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}
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}
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return count;
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}
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size_t PackagedContentMetaReader::CalculateConvertContentMetaSize() const {
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const auto *header = this->GetHeader();
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return this->CalculateSizeImpl<ContentMetaHeader, ContentInfo>(header->extended_header_size, header->content_count + 1, header->content_meta_count, 0, false);
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}
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void PackagedContentMetaReader::ConvertToInstallContentMeta(void *dst, size_t size, const InstallContentInfo &meta) {
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/* Ensure we have enough space to convert. */
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AMS_ABORT_UNLESS(size >= this->CalculateConvertInstallContentMetaSize());
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/* Prepare for conversion. */
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const auto *packaged_header = this->GetHeader();
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uintptr_t dst_addr = reinterpret_cast<uintptr_t>(dst);
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/* Convert the header. */
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InstallContentMetaHeader header;
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ConvertPackageContentMetaHeaderToInstallContentMetaHeader(std::addressof(header), *packaged_header);
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header.content_count += 1;
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/* Don't include deltas. */
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if (packaged_header->type == ContentMetaType::Patch) {
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header.content_count -= this->CountDeltaFragments();
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}
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/* Copy the header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(header), sizeof(header));
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dst_addr += sizeof(header);
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/* Copy the extended header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), reinterpret_cast<void *>(this->GetExtendedHeaderAddress()), packaged_header->extended_header_size);
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dst_addr += packaged_header->extended_header_size;
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/* Copy the top level meta. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(meta), sizeof(meta));
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dst_addr += sizeof(meta);
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/* Copy content infos. */
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for (size_t i = 0; i < this->GetContentCount(); i++) {
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const auto *packaged_content_info = this->GetContentInfo(i);
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/* Don't copy any delta fragments. */
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if (packaged_header->type == ContentMetaType::Patch) {
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if (packaged_content_info->GetType() == ContentType::DeltaFragment) {
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continue;
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}
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}
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/* Create the install content info. */
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InstallContentInfo install_content_info = InstallContentInfo::Make(*packaged_content_info, packaged_header->type);
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/* Copy the info. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(install_content_info), sizeof(InstallContentInfo));
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dst_addr += sizeof(InstallContentInfo);
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}
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/* Copy content meta infos. */
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for (size_t i = 0; i < this->GetContentMetaCount(); i++) {
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std::memcpy(reinterpret_cast<void *>(dst_addr), this->GetContentMetaInfo(i), sizeof(ContentMetaInfo));
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dst_addr += sizeof(ContentMetaInfo);
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}
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}
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Result PackagedContentMetaReader::ConvertToFragmentOnlyInstallContentMeta(void *dst, size_t size, const InstallContentInfo &meta, u32 source_version) {
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/* Ensure that we have enough space. */
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size_t required_size;
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R_TRY(this->CalculateConvertFragmentOnlyInstallContentMetaSize(std::addressof(required_size), source_version));
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AMS_ABORT_UNLESS(size >= required_size);
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/* Find the delta index. */
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PatchMetaExtendedDataReader reader(this->GetExtendedData(), this->GetExtendedDataSize());
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s32 index;
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R_TRY(FindDeltaIndex(std::addressof(index), reader, source_version, this->GetKey().version));
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auto delta = reader.GetPatchDeltaHeader(index);
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/* Prepare for conversion. */
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const auto *packaged_header = this->GetHeader();
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uintptr_t dst_addr = reinterpret_cast<uintptr_t>(dst);
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/* Convert the header. */
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InstallContentMetaHeader header;
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ConvertPackageContentMetaHeaderToInstallContentMetaHeader(std::addressof(header), *packaged_header);
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header.install_type = ContentInstallType::FragmentOnly;
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/* Set the content count. */
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auto fragment_count = CountContentExceptForMeta(reader, index);
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header.content_count = static_cast<u16>(fragment_count) + 1;
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/* Copy the header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(header), sizeof(header));
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dst_addr += sizeof(header);
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/* Copy the extended header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), reinterpret_cast<void *>(this->GetExtendedHeaderAddress()), packaged_header->extended_header_size);
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dst_addr += packaged_header->extended_header_size;
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/* Copy the top level meta. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(meta), sizeof(meta));
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dst_addr += sizeof(meta);
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s32 count = 0;
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for (s32 i = 0; i < static_cast<s32>(delta->content_count); i++) {
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auto packaged_content_info = reader.GetPatchDeltaPackagedContentInfo(index, i);
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if (packaged_content_info->GetType() != ContentType::Meta) {
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/* Create the install content info. */
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InstallContentInfo install_content_info = InstallContentInfo::Make(*packaged_content_info, packaged_header->type);
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/* Copy the info. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(install_content_info), sizeof(InstallContentInfo));
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dst_addr += sizeof(InstallContentInfo);
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/* Increment the count. */
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count++;
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}
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}
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/* Assert that we copied the right number of infos. */
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AMS_ASSERT(count == fragment_count);
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return ResultSuccess();
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}
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Result PackagedContentMetaReader::CalculateConvertFragmentOnlyInstallContentMetaSize(size_t *out_size, u32 source_version) const {
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/* Find the delta index. */
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PatchMetaExtendedDataReader reader(this->GetExtendedData(), this->GetExtendedDataSize());
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s32 index;
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R_TRY(FindDeltaIndex(std::addressof(index), reader, source_version, this->GetKey().version));
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/* Get the fragment count. */
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auto fragment_count = CountContentExceptForMeta(reader, index);
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/* Recalculate. */
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*out_size = CalculateSizeImpl<InstallContentMetaHeader, InstallContentInfo>(this->GetExtendedHeaderSize(), fragment_count + 1, 0, this->GetExtendedDataSize(), false);
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return ResultSuccess();
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}
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void PackagedContentMetaReader::ConvertToContentMeta(void *dst, size_t size, const ContentInfo &meta) {
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/* Ensure we have enough space to convert. */
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AMS_ABORT_UNLESS(size >= this->CalculateConvertContentMetaSize());
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/* Prepare for conversion. */
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const auto *packaged_header = this->GetHeader();
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uintptr_t dst_addr = reinterpret_cast<uintptr_t>(dst);
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/* Convert the header. */
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ContentMetaHeader header;
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ConvertPackageContentMetaHeaderToContentMetaHeader(std::addressof(header), *packaged_header);
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header.content_count += 1;
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/* Don't include deltas. */
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if (packaged_header->type == ContentMetaType::Patch) {
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header.content_count -= this->CountDeltaFragments();
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}
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/* Copy the header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(header), sizeof(header));
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dst_addr += sizeof(header);
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/* Copy the extended header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), reinterpret_cast<void *>(this->GetExtendedHeaderAddress()), packaged_header->extended_header_size);
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dst_addr += packaged_header->extended_header_size;
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/* Copy the top level meta. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(meta), sizeof(meta));
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dst_addr += sizeof(meta);
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/* Copy content infos. */
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for (size_t i = 0; i < this->GetContentCount(); i++) {
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/* Don't copy any delta fragments. */
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if (packaged_header->type == ContentMetaType::Patch) {
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if (this->GetContentInfo(i)->GetType() == ContentType::DeltaFragment) {
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continue;
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}
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}
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/* Copy the current info. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(this->GetContentInfo(i)->info), sizeof(ContentInfo));
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dst_addr += sizeof(ContentInfo);
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}
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/* Copy content meta infos. */
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for (size_t i = 0; i < this->GetContentMetaCount(); i++) {
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std::memcpy(reinterpret_cast<void *>(dst_addr), this->GetContentMetaInfo(i), sizeof(ContentMetaInfo));
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dst_addr += sizeof(ContentMetaInfo);
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}
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}
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size_t InstallContentMetaReader::CalculateConvertSize() const {
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return CalculateSizeImpl<ContentMetaHeader, ContentInfo>(this->GetExtendedHeaderSize(), this->GetContentCount(), this->GetContentMetaCount(), this->GetExtendedDataSize(), false);
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}
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void InstallContentMetaReader::ConvertToContentMeta(void *dst, size_t size) const {
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/* Ensure we have enough space to convert. */
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AMS_ABORT_UNLESS(size >= this->CalculateConvertSize());
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/* Prepare for conversion. */
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const auto *install_header = this->GetHeader();
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uintptr_t dst_addr = reinterpret_cast<uintptr_t>(dst);
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/* Convert the header. */
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ContentMetaHeader header;
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ConvertInstallContentMetaHeaderToContentMetaHeader(std::addressof(header), *install_header);
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/* Copy the header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(header), sizeof(header));
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dst_addr += sizeof(header);
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/* Copy the extended header. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), reinterpret_cast<void *>(this->GetExtendedHeaderAddress()), install_header->extended_header_size);
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dst_addr += install_header->extended_header_size;
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/* Copy content infos. */
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for (size_t i = 0; i < this->GetContentCount(); i++) {
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/* Copy the current info. */
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std::memcpy(reinterpret_cast<void *>(dst_addr), std::addressof(this->GetContentInfo(i)->info), sizeof(ContentInfo));
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dst_addr += sizeof(ContentInfo);
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}
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/* Copy content meta infos. */
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for (size_t i = 0; i < this->GetContentMetaCount(); i++) {
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std::memcpy(reinterpret_cast<void *>(dst_addr), this->GetContentMetaInfo(i), sizeof(ContentMetaInfo));
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dst_addr += sizeof(ContentMetaInfo);
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}
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}
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}
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