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ncm: implement firmware downgrading (#958)

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* ncm: implement firmware downgrading

* ncm: make storage list const
This commit is contained in:
Adubbz 2020-05-19 01:03:38 +10:00 • committed by GitHub
parent 19d8a0fc2b
commit 79ae47f028
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 111 additions and 3 deletions
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1
libraries/libstratosphere/include/stratosphere/ncm.hpp
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@ -36,6 +36,7 @@
#include <stratosphere/ncm/ncm_memory_report.hpp>
#include <stratosphere/ncm/ncm_package_install_task_base.hpp>
#include <stratosphere/ncm/ncm_package_install_task.hpp>
#include <stratosphere/ncm/ncm_package_system_downgrade_task.hpp>
#include <stratosphere/ncm/ncm_package_system_update_task.hpp>
#include <stratosphere/ncm/ncm_submission_package_install_task.hpp>
#include <stratosphere/ncm/ncm_storage_utils.hpp>

4
libraries/libstratosphere/include/stratosphere/ncm/ncm_install_task_base.hpp
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@ -139,10 +139,11 @@ namespace ams::ncm {
Result CountInstallContentMetaData(s32 *out_count);
Result GetInstallContentMetaData(InstallContentMeta *out_content_meta, s32 index);
Result DeleteInstallContentMetaData(const ContentMetaKey *keys, s32 num_keys);
virtual Result GetInstallContentMetaInfo(InstallContentMetaInfo *out_info, const ContentMetaKey &key) = 0;
virtual Result PrepareDependency();
Result PrepareSystemUpdateDependency();
Result PrepareContentMetaIfLatest(const ContentMetaKey &key);
virtual Result PrepareContentMetaIfLatest(const ContentMetaKey &key); /* NOTE: This is not virtual in Nintendo's code. We do so to facilitate downgrades. */
u32 GetConfig() const { return this->config; }
Result WriteContentMetaToPlaceHolder(InstallContentInfo *out_install_content_info, ContentStorage *storage, const InstallContentMetaInfo &meta_info, std::optional<bool> is_temporary);
@ -163,7 +164,6 @@ namespace ams::ncm {
Result VerifyAllNotCommitted(const StorageContentMetaKey *keys, s32 num_keys);
virtual Result PrepareInstallContentMetaData() = 0;
virtual Result GetInstallContentMetaInfo(InstallContentMetaInfo *out_info, const ContentMetaKey &key) = 0;
virtual Result GetLatestVersion(std::optional<u32> *out_version, u64 id) { return ncm::ResultContentMetaNotFound(); }
virtual Result OnExecuteComplete() { return ResultSuccess(); }

30
libraries/libstratosphere/include/stratosphere/ncm/ncm_package_system_downgrade_task.hpp Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (c) 2019-2020 Adubbz, Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere/ncm/ncm_package_system_update_task.hpp>
namespace ams::ncm {
class PackageSystemDowngradeTask : public PackageSystemUpdateTask {
public:
Result Commit();
protected:
virtual Result PrepareContentMetaIfLatest(const ContentMetaKey &key) override;
private:
Result PreCommit();
};
}

3
libraries/libstratosphere/include/stratosphere/ncm/ncm_package_system_update_task.hpp
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@ -34,9 +34,10 @@ namespace ams::ncm {
std::optional<ContentMetaKey> GetSystemUpdateMetaKey();
protected:
virtual Result PrepareInstallContentMetaData() override;
virtual Result GetInstallContentMetaInfo(InstallContentMetaInfo *out, const ContentMetaKey &key) override;
InstallTaskDataBase &GetInstallData() { return this->data; } /* Atmosphere extension. */
private:
virtual Result PrepareDependency() override;
virtual Result GetInstallContentMetaInfo(InstallContentMetaInfo *out, const ContentMetaKey &key) override;
Result GetContentInfoOfContentMeta(ContentInfo *out, const ContentMetaKey &key);
};