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// SPDX-FileCopyrightText: 2020 Simon Persson <simon.persson@mykolab.com>
//
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
#include "bupjob.h"
#include "kupdaemon_debug.h"
#include <KLocalizedString>
#include <QFileInfo>
#include <QThread>
#include <csignal>
BupJob::BupJob(BackupPlan &pBackupPlan, const QString &pDestinationPath, const QString &pLogFilePath, KupDaemon *pKupDaemon)
: BackupJob(pBackupPlan, pDestinationPath, pLogFilePath, pKupDaemon)
{
mFsckProcess.setOutputChannelMode(KProcess::SeparateChannels);
mIndexProcess.setOutputChannelMode(KProcess::SeparateChannels);
mSaveProcess.setOutputChannelMode(KProcess::SeparateChannels);
mPar2Process.setOutputChannelMode(KProcess::SeparateChannels);
setCapabilities(KJob::Suspendable);
mHarmlessErrorCount = 0;
mAllErrorsHarmless = false;
mLineBreaksRegExp = QRegularExpression(QStringLiteral("\n|\r"));
mLineBreaksRegExp.optimize();
mNonsenseRegExp = QRegularExpression(QStringLiteral("^(?:Reading index|bloom|midx)"));
mNonsenseRegExp.optimize();
mFileGoneRegExp = QRegularExpression(QStringLiteral("\\[Errno 2\\]"));
mFileGoneRegExp.optimize();
mProgressRegExp = QRegularExpression(QStringLiteral("(\\d+)/(\\d+)k, (\\d+)/(\\d+) files\\) \\S* (?:(\\d+)k/s|)"));
mProgressRegExp.optimize();
mErrorCountRegExp = QRegularExpression(QStringLiteral("^WARNING: (\\d+) errors encountered while saving."));
mErrorCountRegExp.optimize();
mFileInfoRegExp = QRegularExpression(QStringLiteral("^(?: |A|M) \\/"));
mFileInfoRegExp.optimize();
}
void BupJob::performJob()
{
KProcess lPar2Process;
lPar2Process.setOutputChannelMode(KProcess::SeparateChannels);
lPar2Process << QStringLiteral("bup") << QStringLiteral("fsck") << QStringLiteral("--par2-ok");
int lExitCode = lPar2Process.execute();
if (lExitCode < 0) {
jobFinishedError(ErrorWithoutLog,
xi18nc("@info notification",
"The <application>bup</application> program is "
"needed but could not be found, maybe it is not installed?"));
return;
}
if (mBackupPlan.mGenerateRecoveryInfo && lExitCode != 0) {
jobFinishedError(ErrorWithoutLog,
xi18nc("@info notification",
"The <application>par2</application> program is "
"needed but could not be found, maybe it is not installed?"));
return;
}
mLogStream << QStringLiteral("Kup is starting bup backup job at ") << QLocale().toString(QDateTime::currentDateTime()) << Qt::endl << Qt::endl;
KProcess lInitProcess;
lInitProcess.setOutputChannelMode(KProcess::SeparateChannels);
lInitProcess << QStringLiteral("bup");
lInitProcess << QStringLiteral("-d") << mDestinationPath;
lInitProcess << QStringLiteral("init");
mLogStream << quoteArgs(lInitProcess.program()) << Qt::endl;
if (lInitProcess.execute() != 0) {
mLogStream << QString::fromUtf8(lInitProcess.readAllStandardError()) << Qt::endl;
mLogStream << QStringLiteral(
"Kup did not successfully complete the bup backup job: "
"failed to initialize backup destination.")
<< Qt::endl;
jobFinishedError(ErrorWithLog,
xi18nc("@info notification",
"Backup destination could not be initialised. "
"See log file for more details."));
return;
}
if (mBackupPlan.mCheckBackups) {
mFsckProcess << QStringLiteral("bup");
mFsckProcess << QStringLiteral("-d") << mDestinationPath;
mFsckProcess << QStringLiteral("fsck") << QStringLiteral("--quick");
mFsckProcess << QStringLiteral("-j") << QString::number(qMin(4, QThread::idealThreadCount()));
connect(&mFsckProcess, qOverload<int, QProcess::ExitStatus>(&QProcess::finished), this, &BupJob::slotCheckingDone);
connect(&mFsckProcess, &KProcess::started, this, &BupJob::slotCheckingStarted);
mLogStream << quoteArgs(mFsckProcess.program()) << Qt::endl;
mFsckProcess.start();
mInfoRateLimiter.start();
} else {
startIndexing();
}
}
void BupJob::slotCheckingStarted()
{
makeNice(mFsckProcess.processId());
emit description(this, i18n("Checking backup integrity"));
}
void BupJob::slotCheckingDone(int pExitCode, QProcess::ExitStatus pExitStatus)
{
QString lErrors = QString::fromUtf8(mFsckProcess.readAllStandardError());
if (!lErrors.isEmpty()) {
mLogStream << lErrors << Qt::endl;
}
mLogStream << "Exit code: " << pExitCode << Qt::endl;
if (pExitStatus != QProcess::NormalExit || pExitCode != 0) {
mLogStream << QStringLiteral(
"Kup did not successfully complete the bup backup job: "
"failed integrity check. Your backups could be "
"corrupted! See above for details.")
<< Qt::endl;
if (mBackupPlan.mGenerateRecoveryInfo) {
jobFinishedError(ErrorSuggestRepair,
xi18nc("@info notification",
"Failed backup integrity check. Your backups could be corrupted! "
"See log file for more details. Do you want to try repairing the backup files?"));
} else {
jobFinishedError(ErrorWithLog,
xi18nc("@info notification",
"Failed backup integrity check. Your backups could be corrupted! "
"See log file for more details."));
}
return;
}
startIndexing();
}
void BupJob::startIndexing()
{
mIndexProcess << QStringLiteral("bup");
mIndexProcess << QStringLiteral("-d") << mDestinationPath;
mIndexProcess << QStringLiteral("index") << QStringLiteral("-u");
foreach (QString lExclude, mBackupPlan.mPathsExcluded) {
mIndexProcess << QStringLiteral("--exclude");
mIndexProcess << lExclude;
}
QString lExcludesPath = mBackupPlan.absoluteExcludesFilePath();
if (mBackupPlan.mExcludePatterns && QFileInfo::exists(lExcludesPath)) {
mIndexProcess << QStringLiteral("--exclude-rx-from") << lExcludesPath;
}
mIndexProcess << mBackupPlan.mPathsIncluded;
connect(&mIndexProcess, qOverload<int, QProcess::ExitStatus>(&QProcess::finished), this, &BupJob::slotIndexingDone);
connect(&mIndexProcess, &KProcess::started, this, &BupJob::slotIndexingStarted);
mLogStream << quoteArgs(mIndexProcess.program()) << Qt::endl;
mIndexProcess.start();
}
void BupJob::slotIndexingStarted()
{
makeNice(mIndexProcess.processId());
emit description(this, i18n("Checking what to copy"));
}
void BupJob::slotIndexingDone(int pExitCode, QProcess::ExitStatus pExitStatus)
{
QString lErrors = QString::fromUtf8(mIndexProcess.readAllStandardError());
if (!lErrors.isEmpty()) {
mLogStream << lErrors << Qt::endl;
}
mLogStream << "Exit code: " << pExitCode << Qt::endl;
if (pExitStatus != QProcess::NormalExit || pExitCode != 0) {
mLogStream << QStringLiteral("Kup did not successfully complete the bup backup job: failed to index everything.") << Qt::endl;
jobFinishedError(ErrorWithLog,
xi18nc("@info notification",
"Failed to analyze files. "
"See log file for more details."));
return;
}
mSaveProcess << QStringLiteral("bup");
mSaveProcess << QStringLiteral("-d") << mDestinationPath;
mSaveProcess << QStringLiteral("save");
mSaveProcess << QStringLiteral("-n") << QStringLiteral("kup") << QStringLiteral("-vv");
mSaveProcess << mBackupPlan.mPathsIncluded;
mLogStream << quoteArgs(mSaveProcess.program()) << Qt::endl;
connect(&mSaveProcess, qOverload<int, QProcess::ExitStatus>(&QProcess::finished), this, &BupJob::slotSavingDone);
connect(&mSaveProcess, &KProcess::started, this, &BupJob::slotSavingStarted);
connect(&mSaveProcess, &KProcess::readyReadStandardError, this, &BupJob::slotReadBupErrors);
mSaveProcess.setEnv(QStringLiteral("BUP_FORCE_TTY"), QStringLiteral("2"));
mSaveProcess.start();
}
void BupJob::slotSavingStarted()
{
makeNice(mSaveProcess.processId());
emit description(this, i18n("Saving backup"));
}
void BupJob::slotSavingDone(int pExitCode, QProcess::ExitStatus pExitStatus)
{
slotReadBupErrors();
mLogStream << "Exit code: " << pExitCode << Qt::endl;
if (pExitStatus != QProcess::NormalExit || pExitCode != 0) {
if (mAllErrorsHarmless) {
mLogStream << QStringLiteral("Only harmless errors detected by Kup.") << Qt::endl;
} else {
mLogStream << QStringLiteral(
"Kup did not successfully complete the bup backup job: "
"failed to save everything.")
<< Qt::endl;
jobFinishedError(ErrorWithLog,
xi18nc("@info notification",
"Failed to save backup. "
"See log file for more details."));
return;
}
}
if (mBackupPlan.mGenerateRecoveryInfo) {
mPar2Process << QStringLiteral("bup");
mPar2Process << QStringLiteral("-d") << mDestinationPath;
mPar2Process << QStringLiteral("fsck") << QStringLiteral("-g");
mPar2Process << QStringLiteral("-j") << QString::number(qMin(4, QThread::idealThreadCount()));
connect(&mPar2Process, qOverload<int, QProcess::ExitStatus>(&QProcess::finished), this, &BupJob::slotRecoveryInfoDone);
connect(&mPar2Process, &KProcess::started, this, &BupJob::slotRecoveryInfoStarted);
mLogStream << quoteArgs(mPar2Process.program()) << Qt::endl;
mPar2Process.start();
} else {
mLogStream << QStringLiteral("Kup successfully completed the bup backup job at ") << QLocale().toString(QDateTime::currentDateTime()) << Qt::endl;
jobFinishedSuccess();
}
}
void BupJob::slotRecoveryInfoStarted()
{
makeNice(mPar2Process.processId());
emit description(this, i18n("Generating recovery information"));
}
void BupJob::slotRecoveryInfoDone(int pExitCode, QProcess::ExitStatus pExitStatus)
{
QString lErrors = QString::fromUtf8(mPar2Process.readAllStandardError());
if (!lErrors.isEmpty()) {
mLogStream << lErrors << Qt::endl;
}
mLogStream << "Exit code: " << pExitCode << Qt::endl;
if (pExitStatus != QProcess::NormalExit || pExitCode != 0) {
mLogStream << QStringLiteral(
"Kup did not successfully complete the bup backup job: "
"failed to generate recovery info.")
<< Qt::endl;
jobFinishedError(ErrorWithLog,
xi18nc("@info notification",
"Failed to generate recovery info for the backup. "
"See log file for more details."));
} else {
mLogStream << QStringLiteral("Kup successfully completed the bup backup job.") << Qt::endl;
jobFinishedSuccess();
}
}
void BupJob::slotReadBupErrors()
{
qulonglong lCopiedKBytes = 0, lTotalKBytes = 0, lCopiedFiles = 0, lTotalFiles = 0;
ulong lSpeedKBps = 0, lPercent = 0;
QString lFileName;
const auto lInput = QString::fromUtf8(mSaveProcess.readAllStandardError());
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
const auto lLines = lInput.split(mLineBreaksRegExp, QString::SkipEmptyParts);
#else
const auto lLines = lInput.split(mLineBreaksRegExp, Qt::SkipEmptyParts);
#endif
for (const QString &lLine : lLines) {
qCDebug(KUPDAEMON) << lLine;
if (mNonsenseRegExp.match(lLine).hasMatch()) {
continue;
}
if (mFileGoneRegExp.match(lLine).hasMatch()) {
mHarmlessErrorCount++;
mLogStream << lLine << Qt::endl;
continue;
}
const auto lCountMatch = mErrorCountRegExp.match(lLine);
if (lCountMatch.hasMatch()) {
mAllErrorsHarmless = lCountMatch.captured(1).toInt() == mHarmlessErrorCount;
mLogStream << lLine << Qt::endl;
continue;
}
const auto lProgressMatch = mProgressRegExp.match(lLine);
if (lProgressMatch.hasMatch()) {
lCopiedKBytes = lProgressMatch.captured(1).toULongLong();
lTotalKBytes = lProgressMatch.captured(2).toULongLong();
lCopiedFiles = lProgressMatch.captured(3).toULongLong();
lTotalFiles = lProgressMatch.captured(4).toULongLong();
lSpeedKBps = lProgressMatch.captured(5).toULong();
if (lTotalKBytes != 0) {
lPercent = qMax(100 * lCopiedKBytes / lTotalKBytes, static_cast<qulonglong>(1));
}
continue;
}
if (mFileInfoRegExp.match(lLine).hasMatch()) {
lFileName = lLine.mid(2);
continue;
}
if (!lLine.startsWith(QStringLiteral("D /"))) {
mLogStream << lLine << Qt::endl;
}
}
if (mInfoRateLimiter.hasExpired(200)) {
if (lTotalFiles != 0) {
setPercent(lPercent);
setTotalAmount(KJob::Bytes, lTotalKBytes * 1024);
setTotalAmount(KJob::Files, lTotalFiles);
setProcessedAmount(KJob::Bytes, lCopiedKBytes * 1024);
setProcessedAmount(KJob::Files, lCopiedFiles);
emitSpeed(lSpeedKBps * 1024);
}
if (!lFileName.isEmpty()) {
emit description(this, i18n("Saving backup"), qMakePair(i18nc("Label for file currently being copied", "File"), lFileName));
}
mInfoRateLimiter.start();
}
}
bool BupJob::doSuspend()
{
if (mFsckProcess.state() == KProcess::Running) {
return 0 == ::kill(mFsckProcess.processId(), SIGSTOP);
}
if (mIndexProcess.state() == KProcess::Running) {
return 0 == ::kill(mIndexProcess.processId(), SIGSTOP);
}
if (mSaveProcess.state() == KProcess::Running) {
return 0 == ::kill(mSaveProcess.processId(), SIGSTOP);
}
if (mPar2Process.state() == KProcess::Running) {
return 0 == ::kill(mPar2Process.processId(), SIGSTOP);
}
return false;
}
bool BupJob::doResume()
{
if (mFsckProcess.state() == KProcess::Running) {
return 0 == ::kill(mFsckProcess.processId(), SIGCONT);
}
if (mIndexProcess.state() == KProcess::Running) {
return 0 == ::kill(mIndexProcess.processId(), SIGCONT);
}
if (mSaveProcess.state() == KProcess::Running) {
return 0 == ::kill(mSaveProcess.processId(), SIGCONT);
}
if (mPar2Process.state() == KProcess::Running) {
return 0 == ::kill(mPar2Process.processId(), SIGCONT);
}
return false;
}
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