298 lines
10 KiB
C++
298 lines
10 KiB
C++
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#include "dir-watcher.h"
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#include <QDebug>
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#include <QDir>
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#include <QDBusConnection>
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#include <QDBusArgument>
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#include <QThread>
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#include <fstab.h>
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static std::once_flag flag;
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static DirWatcher *global_intance = nullptr;
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QMutex DirWatcher::s_mutex;
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DirWatcher::DirWatcher(QObject *parent) : QObject(parent)
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{
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initData();
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initDiskWatcher();
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}
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DirWatcher::~DirWatcher()
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{
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if (m_volumeMonitor) {
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g_signal_handler_disconnect(m_volumeMonitor, m_mountAddHandle);
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g_signal_handler_disconnect(m_volumeMonitor, m_mountRemoveHandle);
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m_volumeMonitor = nullptr;
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}
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}
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DirWatcher *DirWatcher::getDirWatcher()
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{
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std::call_once(flag, [ & ] {
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global_intance = new DirWatcher();
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});
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return global_intance;
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}
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QStringList DirWatcher::currentindexableDir()
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{
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s_mutex.lock();
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QStringList indexableDirList = m_indexableDirList;
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s_mutex.unlock();
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return indexableDirList;
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}
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QStringList DirWatcher::currentBlackListOfIndex()
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{
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s_mutex.lock();
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QStringList blackListOfIndex = m_blackListOfIndex;
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s_mutex.unlock();
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return blackListOfIndex;
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}
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/**
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* @brief DirWatcher::blackListOfDir 根据传入目录返回当前目录下的所有不可搜索目录，没有则返回空列表
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* @param dirPath 要搜索的目录
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*/
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QStringList DirWatcher::blackListOfDir(const QString &dirPath)
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{
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//new TODO: Optimize the search algorithm.
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//There is no processing for the subvolumes.May be a bug.
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QStringList blackListOfDir;
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s_mutex.lock();
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for (auto t = m_repeatedlyMountedDeviceInfo.constBegin(); t != m_repeatedlyMountedDeviceInfo.constEnd(); t++) {
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QString topRepeatedMountPoint;
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for (QString mountPoint: t.value()) {
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if (mountPoint.startsWith(dirPath)) {
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if (topRepeatedMountPoint.isEmpty()) {
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topRepeatedMountPoint = mountPoint;
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continue;
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} else if (topRepeatedMountPoint.startsWith(mountPoint)) {
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blackListOfDir.append(topRepeatedMountPoint);
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topRepeatedMountPoint = mountPoint;
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} else {
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blackListOfDir.append(mountPoint);
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}
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}
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}
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}
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s_mutex.unlock();
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return blackListOfDir;
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}
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void DirWatcher::appendBlackListItemOfIndex(const QString &path)
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{
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s_mutex.lock();
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m_blackListOfIndex.append(path);
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m_blackListOfIndex = m_blackListOfIndex.toSet().toList();
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s_mutex.unlock();
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}
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void DirWatcher::appendBlackListItemOfIndex(const QStringList &pathList)
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{
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s_mutex.lock();
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m_blackListOfIndex.append(pathList);
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m_blackListOfIndex = m_blackListOfIndex.toSet().toList();
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s_mutex.unlock();
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}
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void DirWatcher::removeBlackListItemOfIndex(const QString &path)
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{
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s_mutex.lock();
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m_blackListOfIndex.removeAll(path);
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s_mutex.unlock();
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}
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void DirWatcher::removeBlackListItemOfIndex(const QStringList &pathList)
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{
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s_mutex.lock();
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for (QString path: pathList) {
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m_blackListOfIndex.removeAll(path);
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}
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s_mutex.unlock();
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}
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void DirWatcher::mountAddCallback(GVolumeMonitor *monitor, GMount *gmount, DirWatcher *pThis)
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{
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qDebug() << "Mount Added";
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pThis->handleDisk();
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}
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void DirWatcher::mountRemoveCallback(GVolumeMonitor *monitor, GMount *gmount, DirWatcher *pThis)
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{
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qDebug() << "Mount Removed";
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s_mutex.lock();
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//处理u盘设备
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if (pThis->m_removedUDiskDevice != NULL) {
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pThis->m_currentUDiskDeviceInfo.remove(pThis->m_removedUDiskDevice);
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qDebug() << "m_currentMountedDeviceInfo:" << pThis->m_currentMountedDeviceInfo;
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qDebug() << "m_repeatedlyMountedDeviceInfo:" << pThis->m_repeatedlyMountedDeviceInfo;
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qDebug() << "m_currentUDiskDeviceInfo:" << pThis->m_currentUDiskDeviceInfo;
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qDebug() << "m_blackListOfIndex:" << pThis->m_blackListOfIndex;
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pThis->m_removedUDiskDevice = "";
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s_mutex.unlock();
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return;
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}
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GMount* mount = (GMount*)g_object_ref(gmount);
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GFile* rootFile;
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rootFile = g_mount_get_root(mount);
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if (!rootFile) {
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s_mutex.unlock();
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return;
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}
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QString mountPoint = g_file_get_uri(rootFile);
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if (mountPoint.isEmpty()) {
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s_mutex.unlock();
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return;
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}
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//处理uri转码,处理子卷情况
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if (mountPoint.startsWith("file:///")) {
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QString removedMountPoint = g_filename_from_uri(mountPoint.toUtf8().constData(), nullptr, nullptr);
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pThis->m_blackListOfIndex.removeAll(removedMountPoint);
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for (auto t = pThis->m_infoOfSubvolume.constBegin(); t != pThis->m_infoOfSubvolume.constEnd(); t++) {
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if (removedMountPoint.startsWith(t.value())) {
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pThis->m_blackListOfIndex.removeAll(removedMountPoint.replace(t.value(), t.key()));
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}
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if (removedMountPoint.startsWith(t.key())) {
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pThis->m_blackListOfIndex.removeAll(removedMountPoint.replace(t.key(), t.value()));
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}
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}
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s_mutex.unlock();
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qDebug() << "m_currentMountedDeviceInfo:" << pThis->m_currentMountedDeviceInfo;
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qDebug() << "m_repeatedlyMountedDeviceInfo:" << pThis->m_repeatedlyMountedDeviceInfo;
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qDebug() << "m_currentUDiskDeviceInfo:" << pThis->m_currentUDiskDeviceInfo;
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qDebug() << "m_blackListOfIndex:" << pThis->m_blackListOfIndex;
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} else {
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s_mutex.unlock();
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qWarning() << "There's someting wrong with the MountPoint!";
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}
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g_object_unref(rootFile);
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}
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void DirWatcher::initData()
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{
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//目前方案只索引数据盘和家目录。
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m_indexableDirList << "/data" << QDir::homePath();
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m_blackListOfIndex << "/data/home" << "/data/root";
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//init auto mounted device list
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setfsent();
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while (1) {
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fstab *myFstab = getfsent();
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if (!myFstab) {
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endfsent();
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break;
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}
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QString automaticMountPoint = myFstab->fs_file;
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QString spec = myFstab->fs_spec;
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//目前只索引data和home，因此只存这两个文件夹下的挂载点
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if (automaticMountPoint.contains("/data") || automaticMountPoint.contains("/home")) {
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m_autoMountList.append(automaticMountPoint);
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}
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if (!spec.startsWith("UUID")) {
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m_infoOfSubvolume.insert(spec, automaticMountPoint);
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}
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}
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//init disk data, refresh the black list
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handleDisk();
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}
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void DirWatcher::initDiskWatcher()
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{
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//use Dbus to monitor the hot plug of Udisk.
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QDBusConnection::systemBus().connect("org.freedesktop.UDisks2",
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"/org/freedesktop/UDisks2",
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"org.freedesktop.DBus.ObjectManager",
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"InterfacesAdded",
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this, SLOT(handleAddedUDiskDevice(QDBusMessage)));
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QDBusConnection::systemBus().connect("org.freedesktop.UDisks2",
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"/org/freedesktop/UDisks2",
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"org.freedesktop.DBus.ObjectManager",
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"InterfacesRemoved",
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this, SLOT(handleRemovedUDiskDevice(QDBusMessage)));
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m_volumeMonitor = g_volume_monitor_get();
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if (!m_volumeMonitor) {
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return;
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}
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m_mountAddHandle = g_signal_connect(m_volumeMonitor, "mount-added", G_CALLBACK(mountAddCallback), this);
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m_mountRemoveHandle = g_signal_connect(m_volumeMonitor, "mount-removed", G_CALLBACK(mountRemoveCallback), this);
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}
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void DirWatcher::handleDisk()
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{
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//init current mounted device info
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s_mutex.lock();
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m_currentMountedDeviceInfo.clear();
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for (QStorageInfo &storage: QStorageInfo::mountedVolumes()) {
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if (storage.isValid() && storage.isReady() && QString(storage.device()).contains(QRegExp("/sd[a-z][1-9]"))) {
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m_currentMountedDeviceInfo[storage.device()].append(storage.rootPath());
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if (m_currentMountedDeviceInfo.value(storage.device()).length() > 1) {
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m_repeatedlyMountedDeviceInfo.insert(storage.device(), m_currentMountedDeviceInfo.value(storage.device()));
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}
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if (storage.rootPath().startsWith("/data") || storage.rootPath().startsWith("/home")) {
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m_blackListOfIndex.append(storage.rootPath());
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}
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}
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}
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//init udisk info
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if (!m_addedUDiskDeviceList.isEmpty()) {
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for (QString addedUDiskDevice: m_addedUDiskDeviceList) {
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m_currentUDiskDeviceInfo.insert(addedUDiskDevice, m_currentMountedDeviceInfo.value("/dev/" + addedUDiskDevice));
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}
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}
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//将u盘设备在/data和/home下的所有挂载点添加到索引黑名单
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if (!m_currentUDiskDeviceInfo.isEmpty()) {
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for (auto t = m_currentUDiskDeviceInfo.constBegin(); t != m_currentUDiskDeviceInfo.constEnd(); t++) {
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for (QString udiskDevice: t.value()) {
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if (udiskDevice.startsWith("/data") || udiskDevice.startsWith("/home")) {
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m_blackListOfIndex.append(udiskDevice);
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}
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}
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}
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}
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//从黑名单中移除所有自动挂载设备（目前只包含自动挂载到/data和/home目录下的设备）
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for (QString autoMountDevice: m_autoMountList) {
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m_blackListOfIndex.removeAll(autoMountDevice);
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}
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m_blackListOfIndex.removeDuplicates();
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qDebug() << "autoMountList:" << m_autoMountList;
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qDebug() << "m_currentMountedDeviceInfo:" << m_currentMountedDeviceInfo;
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qDebug() << "m_repeatedlyMountedDeviceInfo:" << m_repeatedlyMountedDeviceInfo;
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qDebug() << "m_currentUDiskDeviceInfo:" << m_currentUDiskDeviceInfo;
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qDebug() << "m_blackListOfIndex:" << m_blackListOfIndex;
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s_mutex.unlock();
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}
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void DirWatcher::handleAddedUDiskDevice(QDBusMessage msg)
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{
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QDBusObjectPath objPath = msg.arguments().at(0).value<QDBusObjectPath>();
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if (objPath.path().contains(QRegExp("/sd[a-z][1-9]"))) {
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s_mutex.lock();
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m_addedUDiskDeviceList.append(objPath.path().section("/",-1));
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qDebug() << "Add Udisk:" << m_addedUDiskDeviceList;
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s_mutex.unlock();
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}
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}
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void DirWatcher::handleRemovedUDiskDevice(QDBusMessage msg)
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{
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Q_EMIT this->udiskRemoved();
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QDBusObjectPath objPath = msg.arguments().at(0).value<QDBusObjectPath>();
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if (objPath.path().contains(QRegExp("/sd[a-z][1-9]"))) {
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s_mutex.lock();
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m_removedUDiskDevice = objPath.path().section("/",-1);
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m_addedUDiskDeviceList.removeAll(m_removedUDiskDevice);
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s_mutex.unlock();
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}
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}
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