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powersync-core/libnymea-core/hardware/network/macaddressdatabase.cpp

249 lines
8.8 KiB
C++

// SPDX-License-Identifier: LGPL-3.0-or-later
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright (C) 2013 - 2024, nymea GmbH
* Copyright (C) 2024 - 2025, chargebyte austria GmbH
*
* This file is part of nymea.
*
* nymea is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* nymea is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with nymea. If not, see <https://www.gnu.org/licenses/>.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "macaddressdatabase.h"
#include "loggingcategories.h"
#include <QSqlQuery>
#include <QSqlError>
#include <QFileInfo>
#include <QTimer>
#include <QSqlDatabase>
#include <QDir>
#include <QStandardPaths>
#include <QtConcurrent/QtConcurrent>
NYMEA_LOGGING_CATEGORY(dcMacAddressDatabase, "MacAddressDatabase")
namespace nymeaserver {
MacAddressDatabase::MacAddressDatabase(QObject *parent) : QObject(parent)
{
// Find database in system data locations
QString databaseFileName;
const QStringList dataLocations = QStandardPaths::standardLocations(QStandardPaths::GenericDataLocation);
foreach (const QString &dataLocation, dataLocations) {
const QStringList candidateFiles = {
dataLocation + QDir::separator() + "nymea" + QDir::separator() + "nymead" + QDir::separator() + "mac-addresses.db",
dataLocation + QDir::separator() + "nymea" + QDir::separator() + "mac-addresses.db",
dataLocation + QDir::separator() + "mac-addresses.db"
};
foreach (const QString &candidate, candidateFiles) {
QFileInfo databaseFileInfo(candidate);
if (!databaseFileInfo.exists())
continue;
databaseFileName = databaseFileInfo.absoluteFilePath();
break;
}
if (!databaseFileName.isEmpty())
break;
}
if (databaseFileName.isEmpty()) {
qCWarning(dcMacAddressDatabase()) << "Could not find the mac address database in any system data location paths" << dataLocations;
qCWarning(dcMacAddressDatabase()) << "The mac address database lookup feature will not be available.";
return;
}
m_databaseName = databaseFileName;
m_available = initDatabase();
if (m_available) {
m_futureWatcher = new QFutureWatcher<QString>(this);
connect(m_futureWatcher, &QFutureWatcher<QString>::finished, this, &MacAddressDatabase::onLookupFinished);
}
}
MacAddressDatabase::MacAddressDatabase(const QString &databaseName, QObject *parent) :
QObject(parent),
m_databaseName(databaseName)
{
m_available = initDatabase();
if (m_available) {
m_futureWatcher = new QFutureWatcher<QString>(this);
connect(m_futureWatcher, &QFutureWatcher<QString>::finished, this, &MacAddressDatabase::onLookupFinished);
}
}
MacAddressDatabase::~MacAddressDatabase()
{
m_db.close();
m_db = QSqlDatabase();
QSqlDatabase::removeDatabase(m_connectionName);
}
bool MacAddressDatabase::available() const
{
return m_available;
}
MacAddressDatabaseReply *MacAddressDatabase::lookupMacAddress(const QString &macAddress)
{
MacAddressDatabaseReplyImpl *reply = new MacAddressDatabaseReplyImpl(this);
connect(reply, &MacAddressDatabaseReply::finished, reply, &MacAddressDatabaseReply::deleteLater);
reply->m_macAddress = macAddress;
if (!m_available) {
QTimer::singleShot(0, this, [=](){ emit reply->finished(); });
return reply;
}
m_pendingReplies.enqueue(reply);
runNextLookup();
return reply;
}
bool MacAddressDatabase::initDatabase()
{
qCDebug(dcMacAddressDatabase()) << "Starting to initialize the mac address database:" << m_databaseName;
m_connectionName = QFileInfo(m_databaseName).baseName();
m_db = QSqlDatabase::addDatabase(QStringLiteral("QSQLITE"), m_connectionName);
m_db.setDatabaseName(m_databaseName);
if (!m_db.isValid()) {
qCWarning(dcMacAddressDatabase()) << "The network database is not valid" << m_db.databaseName();
return false;
}
m_db.close();
if (!m_db.open()) {
qCWarning(dcMacAddressDatabase()) << "Could not open database" << m_db.databaseName() << "Initialization failed.";
return false;
}
// Verify the tables we need exist
qCDebug(dcMacAddressDatabase()) << "Tables" << m_db.tables();
if (!m_db.tables().contains("oui")) {
qCWarning(dcMacAddressDatabase()) << "Invalid database. Could not find \"oui\" table in" << m_db.databaseName();
return false;
}
if (!m_db.tables().contains("companyNames")) {
qCWarning(dcMacAddressDatabase()) << "Invalid database. Could not find \"companyNames\" table in" << m_db.databaseName();
return false;
}
qCInfo(dcMacAddressDatabase()) << "Database initialized successfully" << m_databaseName;
return true;
}
void MacAddressDatabase::runNextLookup()
{
if (m_pendingReplies.isEmpty())
return;
if (m_futureWatcher->isRunning() || m_currentReply)
return;
m_currentReply = m_pendingReplies.dequeue();
m_currentReply->m_startTimestamp = QDateTime::currentMSecsSinceEpoch();
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
QFuture<QString> future = QtConcurrent::run(&MacAddressDatabase::lookupMacAddressVendorInternal, this, m_currentReply->macAddress());
#else
QFuture<QString> future = QtConcurrent::run(this, &MacAddressDatabase::lookupMacAddressVendorInternal, m_currentReply->macAddress());
#endif
m_futureWatcher->setFuture(future);
}
void MacAddressDatabase::onLookupFinished()
{
if (m_currentReply) {
QString manufacturer = m_futureWatcher->future().result();
qCInfo(dcMacAddressDatabase()) << "Manufacturer lookup for" << m_currentReply->macAddress() << "finished:" << manufacturer << QDateTime::currentMSecsSinceEpoch() - m_currentReply->m_startTimestamp << "ms";
m_currentReply->m_manufacturer = manufacturer;
emit m_currentReply->finished();
m_currentReply = nullptr;
}
runNextLookup();
}
QString MacAddressDatabase::lookupMacAddressVendorInternal(const QString &macAddress)
{
qCInfo(dcMacAddressDatabase()) << "Start looking up vendor for" << macAddress;
// Convert the mac address string to upper like in the database and remove : since they have been removed for size reasons
QString fullMacAddressString = QString(macAddress).toUpper().remove(":");
QString manufacturer;
int length = 6;
while (true) {
QString searchString = fullMacAddressString.left(length);
QString queryString = QString("SELECT COUNT(oui) FROM oui WHERE oui LIKE \'%1%\';").arg(searchString);
qCDebug(dcMacAddressDatabase()) << "Query:" << queryString;
QSqlQuery countQuery(m_db);
if (!countQuery.exec(queryString)) {
qCWarning(dcMacAddressDatabase()) << "Unable to execute SQL query" << queryString << m_db.lastError().databaseText() << m_db.lastError().driverText();
break;
}
if (countQuery.lastError().isValid()) {
qCWarning(dcMacAddressDatabase()) << "Query finished with error" << countQuery.lastError().text();
break;
}
if (!countQuery.next())
break;
int rowCount = countQuery.value(0).toInt();
qCDebug(dcMacAddressDatabase()) << "Found" << rowCount << "with" << searchString;
// If we have found the one...
if (rowCount == 1) {
// Query the name
queryString = QString("SELECT companyName from companyNames WHERE rowid IS (SELECT companyNameIndex FROM oui WHERE oui=\'%1\');").arg(searchString);
qCDebug(dcMacAddressDatabase()) << "Query:" << queryString;
QSqlQuery rowQuery(m_db);
if (!rowQuery.exec(queryString)) {
qCWarning(dcMacAddressDatabase()) << "Unable to execute SQL query" << queryString << m_db.lastError().databaseText() << m_db.lastError().driverText();
break;
}
if (!rowQuery.next())
break;
manufacturer = rowQuery.value(0).toString();
break;
}
// If nothing found
if (rowCount == 0)
break;
// Found to many results, lets add a value until we find the matching vendor
length += 1;
if (length > fullMacAddressString.length())
break;
// Search with one addition digit
}
return manufacturer;
}
}