mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-27 15:11:16 +00:00
77 lines
2.8 KiB
C++
77 lines
2.8 KiB
C++
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/*
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* Copyright (c) 2019-2020 Adubbz, 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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Result PackageSystemDowngradeTask::PreCommit() {
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constexpr size_t MaxContentMetas = 0x40;
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auto &data = this->GetInstallData();
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/* Count the number of content meta entries. */
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s32 count;
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R_TRY(data.Count(std::addressof(count)));
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/* Iterate over content meta. */
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for (s32 i = 0; i < count; i++) {
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/* Obtain the content meta. */
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InstallContentMeta content_meta;
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R_TRY(data.Get(std::addressof(content_meta), i));
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/* Create a reader. */
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const auto reader = content_meta.GetReader();
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const auto key = reader.GetKey();
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/* Obtain a list of suitable storage ids. */
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const auto storage_list = GetStorageList(this->GetInstallStorage());
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/* Iterate over storage ids. */
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for (s32 i = 0; i < storage_list.Count(); i++) {
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/* Open the content meta database. */
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ContentMetaDatabase meta_db;
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if (R_FAILED(OpenContentMetaDatabase(std::addressof(meta_db), storage_list[i]))) {
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continue;
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}
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/* List keys matching the type and id of the install content meta key. */
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ncm::ContentMetaKey keys[MaxContentMetas];
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const auto count = meta_db.ListContentMeta(keys, MaxContentMetas, key.type, { key.id });
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/* Remove matching keys. */
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for (auto i = 0; i < count.total; i++) {
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meta_db.Remove(keys[i]);
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}
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}
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}
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return ResultSuccess();
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}
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Result PackageSystemDowngradeTask::Commit() {
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R_TRY(this->PreCommit());
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return InstallTaskBase::Commit();
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}
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Result PackageSystemDowngradeTask::PrepareContentMetaIfLatest(const ContentMetaKey &key) {
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/* Get and prepare install content meta info. We aren't concerned if our key is older. */
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InstallContentMetaInfo install_content_meta_info;
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R_TRY(this->GetInstallContentMetaInfo(std::addressof(install_content_meta_info), key));
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return this->PrepareContentMeta(install_content_meta_info, key, std::nullopt);
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}
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}
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