236 lines
8.4 KiB
C++
236 lines
8.4 KiB
C++
/**
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* SPDX-FileCopyrightText: 2014 Samoilenko Yuri <kinnalru@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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*/
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#include "mounter.h"
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#include <QDebug>
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#include <QDir>
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#include <unistd.h>
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#include <KLocalizedString>
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#include "config-sftp.h"
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#include "kdeconnectconfig.h"
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#include "mountloop.h"
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#include "plugin_sftp_debug.h"
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Mounter::Mounter(SftpPlugin *sftp)
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: QObject(sftp)
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, m_sftp(sftp)
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, m_proc(nullptr)
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, m_mountPoint(sftp->mountPoint())
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, m_started(false)
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{
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connect(m_sftp, &SftpPlugin::packetReceived, this, &Mounter::onPackageReceived);
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connect(&m_connectTimer, &QTimer::timeout, this, &Mounter::onMountTimeout);
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connect(this, &Mounter::mounted, &m_connectTimer, &QTimer::stop);
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connect(this, &Mounter::failed, &m_connectTimer, &QTimer::stop);
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m_connectTimer.setInterval(10000);
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m_connectTimer.setSingleShot(true);
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QTimer::singleShot(0, this, &Mounter::start);
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Created mounter";
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}
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Mounter::~Mounter()
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{
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Destroy mounter";
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unmount(false);
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}
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bool Mounter::wait()
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{
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if (m_started) {
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return true;
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}
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Starting loop to wait for mount";
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MountLoop loop;
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connect(this, &Mounter::mounted, &loop, &MountLoop::succeeded);
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connect(this, &Mounter::failed, &loop, &MountLoop::failed);
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return loop.exec();
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}
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void Mounter::onPackageReceived(const NetworkPacket &np)
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{
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if (np.get<bool>(QStringLiteral("stop"), false)) {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "SFTP server stopped";
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unmount(false);
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return;
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}
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if (np.has(QStringLiteral("errorMessage"))) {
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Q_EMIT failed(np.get<QString>(QStringLiteral("errorMessage")));
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return;
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}
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// This is the previous code, to access sftp server using KIO. Now we are
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// using the external binary sshfs, and accessing it as a local filesystem.
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/*
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* QUrl url;
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* url.setScheme("sftp");
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* url.setHost(np.get<QString>("ip"));
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* url.setPort(np.get<QString>("port").toInt());
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* url.setUserName(np.get<QString>("user"));
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* url.setPassword(np.get<QString>("password"));
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* url.setPath(np.get<QString>("path"));
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* new KRun(url, 0);
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* Q_EMIT mounted();
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*/
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unmount(false);
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m_proc = new KProcess();
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m_proc->setOutputChannelMode(KProcess::MergedChannels);
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connect(m_proc, &QProcess::started, this, &Mounter::onStarted);
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connect(m_proc, &QProcess::errorOccurred, this, &Mounter::onError);
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connect(m_proc, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished), this, &Mounter::onFinished);
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QDir().mkpath(m_mountPoint);
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const QString program = QStringLiteral("sshfs");
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QString path;
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if (np.has(QStringLiteral("multiPaths")))
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path = QStringLiteral("/");
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else
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path = np.get<QString>(QStringLiteral("path"));
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QHostAddress addr = m_sftp->device()->getLocalIpAddress();
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if (addr == QHostAddress::Null) {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Device doesn't have a LanDeviceLink, unable to get IP address";
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return;
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}
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QString ip = addr.toString();
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if (addr.protocol() == QAbstractSocket::IPv6Protocol) {
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ip.prepend(QLatin1Char('['));
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ip.append(QLatin1Char(']'));
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}
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const QStringList arguments =
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QStringList() << QStringLiteral("%1@%2:%3")
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.arg(np.get<QString>(QStringLiteral("user")),
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ip,
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path)
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<< m_mountPoint << QStringLiteral("-p") << np.get<QString>(QStringLiteral("port"))
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<< QStringLiteral("-s") // This fixes a bug where file chunks are sent out of order and get corrupted on reception
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<< QStringLiteral("-f") << QStringLiteral("-F") << QStringLiteral("/dev/null") // Do not use ~/.ssh/config
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<< QStringLiteral("-o") << QStringLiteral("IdentityFile=") + KdeConnectConfig::instance().privateKeyPath() << QStringLiteral("-o")
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<< QStringLiteral("StrictHostKeyChecking=no") // Do not ask for confirmation because it is not a known host
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<< QStringLiteral("-o") << QStringLiteral("UserKnownHostsFile=/dev/null") // Prevent storing as a known host
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<< QStringLiteral("-o") << QStringLiteral("HostKeyAlgorithms=+ssh-dss\\,ssh-rsa") // https://bugs.kde.org/show_bug.cgi?id=351725
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<< QStringLiteral("-o") << QStringLiteral("uid=") + QString::number(getuid()) << QStringLiteral("-o")
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<< QStringLiteral("gid=") + QString::number(getgid()) << QStringLiteral("-o") << QStringLiteral("reconnect") << QStringLiteral("-o")
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<< QStringLiteral("ServerAliveInterval=30") << QStringLiteral("-o") << QStringLiteral("password_stdin");
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m_proc->setProgram(program, arguments);
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Starting process: " << m_proc->program().join(QStringLiteral(" "));
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m_proc->start();
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// qCDebug(KDECONNECT_PLUGIN_SFTP) << "Passing password: " << np.get<QString>("password").toLatin1();
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m_proc->write(np.get<QString>(QStringLiteral("password")).toLatin1());
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m_proc->write("\n");
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}
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void Mounter::onStarted()
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{
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Process started";
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m_started = true;
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Q_EMIT mounted();
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// m_proc->setStandardOutputFile("/tmp/kdeconnect-sftp.out");
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// m_proc->setStandardErrorFile("/tmp/kdeconnect-sftp.err");
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auto proc = m_proc;
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connect(m_proc, &KProcess::readyReadStandardError, this, [proc]() {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "stderr: " << proc->readAll();
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});
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connect(m_proc, &KProcess::readyReadStandardOutput, this, [proc]() {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "stdout:" << proc->readAll();
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});
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}
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void Mounter::onError(QProcess::ProcessError error)
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{
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if (error == QProcess::FailedToStart) {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "sshfs process failed to start";
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m_started = false;
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Q_EMIT failed(i18n("Failed to start sshfs"));
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} else if (error == QProcess::ProcessError::Crashed) {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "sshfs process crashed";
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m_started = false;
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Q_EMIT failed(i18n("sshfs process crashed"));
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} else {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "sshfs process error" << error;
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m_started = false;
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Q_EMIT failed(i18n("Unknown error in sshfs"));
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}
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}
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void Mounter::onFinished(int exitCode, QProcess::ExitStatus exitStatus)
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{
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if (exitStatus == QProcess::NormalExit && exitCode == 0) {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Process finished (exit code: " << exitCode << ")";
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Q_EMIT unmounted();
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} else {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Process failed (exit code:" << exitCode << ")";
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Q_EMIT failed(i18n("Error when accessing filesystem. sshfs finished with exit code %0").arg(exitCode));
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}
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unmount(true);
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}
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void Mounter::onMountTimeout()
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{
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Timeout: device not responding";
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Q_EMIT failed(i18n("Failed to mount filesystem: device not responding"));
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}
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void Mounter::start()
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{
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NetworkPacket np(PACKET_TYPE_SFTP_REQUEST, {{QStringLiteral("startBrowsing"), true}});
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m_sftp->sendPacket(np);
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m_connectTimer.start();
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}
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void Mounter::unmount(bool finished)
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{
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Unmount" << m_proc;
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if (m_proc) {
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if (!finished) {
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// Process is still running, we want to stop it
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// But when the finished signal come, we might have already gone.
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// Disconnect everything.
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m_proc->disconnect();
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m_proc->kill();
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auto proc = m_proc;
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m_proc = nullptr;
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connect(proc, static_cast<void (QProcess::*)(int, QProcess::ExitStatus)>(&QProcess::finished), [proc]() {
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qCDebug(KDECONNECT_PLUGIN_SFTP) << "Free" << proc;
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proc->deleteLater();
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});
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Q_EMIT unmounted();
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} else
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m_proc->deleteLater();
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// Free mount point (won't always succeed if the path is in use)
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#if defined(HAVE_FUSERMOUNT)
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KProcess::execute(QStringList() << QStringLiteral("fusermount") << QStringLiteral("-u") << m_mountPoint, 10000);
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#else
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KProcess::execute(QStringList() << QStringLiteral("umount") << m_mountPoint, 10000);
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#endif
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m_proc = nullptr;
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}
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m_started = false;
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}
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