403 lines
13 KiB
C++
403 lines
13 KiB
C++
#include "systemrestoreproxy.h"
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#include <QDateTime>
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#include <QDir>
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#include <QDebug>
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#include <unistd.h>
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#include <sys/reboot.h>
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#include "../common/utils.h"
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#include "mymountproxy.h"
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IMPLEMENT_DYNCREATE(SystemRestoreProxy)
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/**
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* @brief 构造函数
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*/
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SystemRestoreProxy::SystemRestoreProxy()
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{
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m_bSuccess = false;
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m_p = nullptr;
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}
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/**
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* @brief 析构函数
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*/
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SystemRestoreProxy::~SystemRestoreProxy()
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{
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delete m_p;
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}
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/**
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* @brief 环境检测
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* @return false,检测失败;true,检测成功
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*/
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bool SystemRestoreProxy::checkEnvEx()
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{
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qDebug() << "SystemRestoreProxy::checkEnvEx invoke begin";
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// 1、检测.user.txt是否存在
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m_userFile = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/" + PATHS_USER_FILE;
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m_userFile.replace("//", "/");
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if (!Utils::filsExists(m_userFile)) {
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qCritical(".user.txt文件不存在");
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emit checkResult(int(BackupResult::WRITE_BACKUP_PATHS_TO_USER_FAILED));
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return false;
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}
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// 2、检测.exclude.user.txt是否存在
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m_excludeUserFile = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/" + EXCLUDE_PATHS_USER_FILE;
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m_excludeUserFile.replace("//", "/");
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if (!Utils::filsExists(m_excludeUserFile)) {
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qCritical(".exclude.user.txt文件不存在");
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emit checkResult(int(BackupResult::WRITE_EXCLUDE_BACKUP_PATHS_TO_USER_FAILED));
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return false;
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}
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// 3、检测还原点是否存在
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m_backupPath = Utils::getSysRootPath() + BACKUP_SNAPSHOTS_PATH + "/" + m_backupWrapper.m_uuid + "/data";
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m_backupPath.replace("//", "/");
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if (Utils::isDirEmpty(m_backupPath)) {
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qCritical("还原点{uuid}/data目录不存在");
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emit checkResult(int(BackupResult::INC_NOT_FOUND_DIR));
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return false;
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}
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emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
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qDebug() << "SystemRestoreProxy::checkEnvEx invoke end";
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return true;
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}
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/**
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* @brief 执行还原逻辑
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*/
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void SystemRestoreProxy::doWorkEx()
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{
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qDebug() << "SystemRestoreProxy::doWorkEx invoke begin";
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// 1、校验
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if (!checkEnvEx())
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return ;
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// 2、还原efi(兼容旧版本的备份)
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if (!restoreEfi()) {
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qCritical("/boot/efi目录同步失败");
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emit checkResult(int(BackupResult::EFI_RSYNC_FAIL));
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return ;
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}
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// 3、还原系统
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restoreSystem();
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qDebug() << "SystemRestoreProxy::doWorkEx invoke end";
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}
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/**
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* @brief 还原efi(兼容旧版本的备份)
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* @return
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*/
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bool SystemRestoreProxy::restoreEfi()
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{
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qDebug() << "SystemRestoreProxy::restoreEfi invoke begin";
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// 是否有/boot/efi目录
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QString efiPath = Utils::getSysRootPath() + "/boot/efi";
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efiPath.replace("//", "/");
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if (!Utils::isDirEmpty(efiPath)) {
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// 1、修复源数据
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repairEfi();
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// 2、重新rw读写挂载
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remountEfi();
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// 3、同步efi
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return rsyncEfi();
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}
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qDebug() << "SystemRestoreProxy::restoreEfi invoke end";
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return true;
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}
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/**
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* @brief 修复efi目录
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*/
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void SystemRestoreProxy::repairEfi()
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{
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QString qsEfiPath = m_backupPath + "/efi";
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if (!Utils::isDirEmpty(qsEfiPath)) {
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// 存在/efi说明是老备份数据，尽量修正老数据
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QStringList args;
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args << "-f";
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args << qsEfiPath;
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QString newPath = m_backupPath + "/boot";
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args << newPath;
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QProcess::execute("mv", args);
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}
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}
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/**
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* @brief 重新rw读写挂载efi分区
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*/
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void SystemRestoreProxy::remountEfi()
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{
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QString mountPath = Utils::getSysRootPath() + "/boot/efi";
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mountPath.replace("//", "/");
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QStringList args;
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args << "-o"
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<< "rw,remount"
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<< mountPath;
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QProcess::execute("mount", args);
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}
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/**
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* @brief 重新rw读写挂载boot分区
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*/
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void SystemRestoreProxy::remountBoot()
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{
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QString mountPath = Utils::getSysRootPath() + "/boot";
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mountPath.replace("//", "/");
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QStringList args;
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args << "-o"
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<< "rw,remount"
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<< mountPath;
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QProcess::execute("mount", args);
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}
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/**
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* @brief 同步efi
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*/
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bool SystemRestoreProxy::rsyncEfi()
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{
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QString efiPath = m_backupPath + "/boot/efi/";
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if (Utils::isDirEmpty(efiPath))
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efiPath = efiPath = m_backupPath + "/efi/";
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if (Utils::isDirEmpty(efiPath))
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return true;
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QStringList args = getRsyncArgs(SystemRestoreScene::EFI_RESTORE);
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QString mountPath = Utils::getSysRootPath() + "/boot/efi/";
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mountPath.replace("//", "/");
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args << efiPath << mountPath;
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m_p = new RsyncPathToDirProcess(this);
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bool result = m_p->start(args);
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delete m_p;
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m_p = nullptr;
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return result;
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}
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/**
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* @brief 根据场景获取rsync命令参数
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* @param scene，场景
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* @return 组装好的rsync的参数信息
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*/
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QStringList SystemRestoreProxy::getRsyncArgs(SystemRestoreScene scene)
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{
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QStringList args;
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args << "-avAHXr";
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args << "--info=progress2";
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args << "--no-inc-recursive";
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args << "--ignore-missing-args";
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args << "--delete";
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QDir dataDir(m_srcPath + "/data");
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QFile file(m_srcPath + "/etc/uid_list");
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QDir efiDir(m_srcPath + "/boot/efi");
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QStringList excludes;
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switch (scene) {
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case SystemRestoreScene::RESTORE_SYSTEM_WITH_DATA :
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args << "--exclude=/home";
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args << "--exclude=/root";
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if (Utils::isHuawei990()) {
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args << "--exclude=/data";
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} else {
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args << "--exclude=/data/usershare";
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}
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// 保留指纹数据，用户密码、角色、权限、生物识别等信息不需要改变
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args << "--exclude=/var/lib/biometric-auth";
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args << "--exclude=/data/sec_storage_data";
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args << "--exclude=/etc/passwd";
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args << "--exclude=/etc/shadow";
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args << "--exclude=/etc/group";
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args << "--exclude=/etc/gshadow";
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args << "--exclude=/etc/sudoers";
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args << "--exclude=/data/home";
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args << "--exclude=/data/root";
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// 此处不要break，因为还需要排除SYSTEM_RESTORE中的项
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case SystemRestoreScene::SYSTEM_RESTORE :
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// 还原工具不还原自身
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args << "--exclude=/usr/bin/backup-daemon";
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args << "--exclude=/usr/bin/kybackup";
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args << "--exclude=/usr/bin/mount_fstab_efi";
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args << "--exclude=/usr/bin/backup-auto-efi";
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args << "--exclude=/usr/bin/backup-auto";
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args << "--exclude=/usr/bin/rsync";
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args << "--exclude=/usr/share/rsync";
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args << "--exclude=/usr/share/initramfs-tools/hooks/kybackup-hooks";
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args << "--exclude=/usr/share/initramfs-tools/scripts/local-bottom/kybackup";
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// 以前的出厂备份和grub备份没有备份/data，还原时需要判断/data是否存在，如不存在需要屏蔽掉，不然会将主机上的/data删除，造成问题
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// 此为兼容以前备份的老数据而改，等以后老的备份估计不存在了可已去掉
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if (!dataDir.exists()) {
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args << "--exclude=/data";
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}
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if (!file.exists()) {
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args << "--exclude=/etc/uid_list";
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}
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// 为兼容以前的老备份数据，增加下面几行
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if (efiDir.isEmpty()) {
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args << QString("--exclude=/boot/efi");
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}
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// 系统安装后有的会将/data/home /data/root挂载到的/home /root上，实际文件是存放在/data/home /data/root下面
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Utils::excludeFstabBindPath(excludes);
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for (const QString& item : excludes) {
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QDir itemDir(m_srcPath + item);
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// 以后统一用/home /root这种路径， 兼容老备份数据（原来的U盘备份，在mksquashfs时排除bind挂载的任意一方时，都备份不上）
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if (item == "/data/home") {
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QDir homeDir(m_srcPath + "/home");
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if (!homeDir.isEmpty()) {
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args << QString("--exclude=/data/home");
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} else if (!itemDir.isEmpty()) {
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args << QString("--exclude=/home");
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} else {
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args << QString("--exclude=/data/home");
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args << QString("--exclude=/home");
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}
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continue;
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} else if (item == "/data/root") {
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QDir homeDir(m_srcPath + "/root");
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if (!homeDir.isEmpty()) {
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args << QString("--exclude=/data/root");
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} else if (!itemDir.isEmpty()) {
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args << QString("--exclude=/root");
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} else {
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args << QString("--exclude=/data/root");
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args << QString("--exclude=/root");
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}
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continue;
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}
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args << QString("--exclude=") + item;
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}
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args << "--exclude-from" << m_excludeUserFile;
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args << "--files-from" << m_userFile;
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break ;
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case SystemRestoreScene::EFI_RESTORE :
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break ;
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default:
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return args;
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}
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return args;
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}
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/**
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* @brief 系统还原
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*/
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void SystemRestoreProxy::restoreSystem()
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{
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// 本地系统备份没有img挂载，故下面两个路径相等
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m_srcPath = m_backupPath;
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QString destPath = Utils::getSysRootPath();
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// 以读写方式重新挂载boot分区，因为有的机器默认以只读挂载
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remountBoot();
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QStringList args;
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// 自动更新的备份还原时保留用户数据
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if (m_curUuid == AUTO_BACKUP_UUID || m_backupWrapper.m_type == BackupType::RESTORE_SYSTEM_WITH_DATA) {
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args = getRsyncArgs(SystemRestoreScene::RESTORE_SYSTEM_WITH_DATA);
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} else {
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args = getRsyncArgs(SystemRestoreScene::SYSTEM_RESTORE);
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}
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args << m_srcPath + "/";
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args << destPath + "/";
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m_p = new RsyncPathToDirProcess(this);
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connect(m_p, &RsyncPathToDirProcess::progress, this, &SystemRestoreProxy::progress);
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connect(m_p, &RsyncPathToDirProcess::finished, this, [&](bool result) {
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if (result) {
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QString time = QDateTime::currentDateTime().toString("yy-MM-dd hh:mm:ss");
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// Utils::writeBackupLog(time + "," + m_curUuid + "," + QString::number(m_backupWrapper.m_type) + ",,," + QString::number(m_backupWrapper.m_frontUid));
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Utils::writeBackupLog(time + "," + m_curUuid + "," + QString::number(m_backupWrapper.m_type) + ",,,");
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Utils::updateSyncFile();
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QString fileIfSync = Utils::getSysRootPath() + FILE_IF_SYNC;
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fileIfSync.replace("//", "/");
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QFileInfo file(fileIfSync);
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QDateTime beginTime = file.fileTime(QFileDevice::FileModificationTime);
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if (Utils::isHuawei990() && FACTORY_BACKUP_UUID == m_curUuid && m_backupWrapper.m_type == BackupType::RESTORE_SYSTEM) {
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// 出厂还原有的机器上删除/home/xxx有残留，故在此再强制删除一下，sudo rm -rf命令一遍还删除不了（报错：无法删除/home/xx/.config:目录非空,应该是删除后又自动生成了），多删除几次还不是非常干净，^_^
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removeHome(Utils::getSysRootPath() + "/home");
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removeHome(Utils::getSysRootPath() + "/data/home");
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}
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Utils::wait(10);
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Utils::updateSyncFile();
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while (1) {
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Utils::wait(2);
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QFileInfo file1(fileIfSync);
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QDateTime UpdateTime = file1.fileTime(QFileDevice::FileModificationTime);
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if (UpdateTime > beginTime)
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break;
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}
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emit this->workResult(result);
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Utils::wait(2);
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reboot(RB_AUTOBOOT);
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}
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emit this->workResult(result);
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});
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m_p->start(args, false);
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}
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/**
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* @brief 删除home子目录，此处主要用于删除用户残留信息
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* @param path
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* @return
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*/
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void SystemRestoreProxy::removeHome(const QString& path)
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{
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QDir dir(path);
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if (dir.exists()) {
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bool needRm = false;
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QString subcmd("rm -rf ");
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QString delDirs;
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QStringList list = dir.entryList(QDir::NoDotAndDotDot | QDir::Dirs);
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for (const QString& item : list) {
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// 出厂备份里面的/home/oem保留
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if (item == "oem")
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continue ;
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QString subPath = path;
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subPath += "/";
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subPath += item;
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QDir subDir(subPath);
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subDir.removeRecursively();
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delDirs += "${rootmnt}";
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delDirs += path;
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delDirs += "/";
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delDirs += item;
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delDirs += " ";
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needRm = true;
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}
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if (needRm) {
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QString cmd = QString("bash -c \"%1\" ").arg(subcmd + delDirs);
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cmd.replace("${rootmnt}", "");
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QProcess::execute(cmd);
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}
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}
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}
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