mirror of
https://github.com/qbittorrent/qBittorrent
synced 2025-07-15 01:33:07 -07:00
Implement new GeoIPManager class.
This commit is contained in:
Vladimir Golovnev (Glassez)
parent
c702a7e426
commit
79976fbfce
28 changed files with 1228 additions and 401 deletions
631
src/core/net/private/geoipdatabase.cpp
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631
src/core/net/private/geoipdatabase.cpp
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/*
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* Bittorrent Client using Qt and libtorrent.
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* Copyright (C) 2015 Vladimir Golovnev <glassez@yandex.ru>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* In addition, as a special exception, the copyright holders give permission to
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* link this program with the OpenSSL project's "OpenSSL" library (or with
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* modified versions of it that use the same license as the "OpenSSL" library),
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* and distribute the linked executables. You must obey the GNU General Public
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* License in all respects for all of the code used other than "OpenSSL". If you
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* modify file(s), you may extend this exception to your version of the file(s),
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* but you are not obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*/
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#include <QDebug>
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#include <QCoreApplication>
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#include <QVariant>
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#include <QHash>
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#include <QList>
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#include <QScopedArrayPointer>
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#include <QScopedPointer>
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#include <QHostAddress>
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#include <QDateTime>
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#include <QFile>
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#include "core/types.h"
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#include "geoipdatabase.h"
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struct Node
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{
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quint32 left;
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quint32 right;
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};
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struct GeoIPData
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{
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// Metadata
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quint16 ipVersion;
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quint16 recordSize;
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quint32 nodeCount;
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QDateTime buildEpoch;
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// Search data
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QList<Node> index;
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QHash<quint32, QString> countries;
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};
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namespace
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{
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const quint32 __ENDIAN_TEST__ = 0x00000001;
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const bool __IS_LITTLE_ENDIAN__ = (reinterpret_cast<const uchar *>(&__ENDIAN_TEST__)[0] == 0x01);
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BEGIN_SCOPED_ENUM(DataType)
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{
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Unknown = 0,
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Pointer = 1,
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String = 2,
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Double = 3,
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Bytes = 4,
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Integer16 = 5,
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Integer32 = 6,
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Map = 7,
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SignedInteger32 = 8,
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Integer64 = 9,
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Integer128 = 10,
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Array = 11,
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DataCacheContainer = 12,
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EndMarker = 13,
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Boolean = 14,
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Float = 15
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}
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END_SCOPED_ENUM
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struct DataFieldDescriptor
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{
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DataType fieldType;
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union
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{
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quint32 fieldSize;
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quint32 offset; // Pointer
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};
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};
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const int MAX_FILE_SIZE = 10485760; // 10MB
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const char DB_TYPE[] = "GeoLite2-Country";
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const quint32 MAX_METADATA_SIZE = 131072; // 128KB
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const char METADATA_BEGIN_MARK[] = "\xab\xcd\xefMaxMind.com";
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const char DATA_SECTION_SEPARATOR[16] = { 0 };
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#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
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Q_IPV6ADDR createMappedAddress(quint32 ip4);
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#endif
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class Loader
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{
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Q_DECLARE_TR_FUNCTIONS(GeoIPDatabase)
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public:
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GeoIPData *load(const QString &filename);
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GeoIPData *load(const QByteArray &data);
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QString error() const;
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private:
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bool parseMetadata(const QVariantHash &metadata);
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bool loadDB();
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QVariantHash readMetadata();
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QVariant readDataField(quint32 &offset);
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bool readDataFieldDescriptor(quint32 &offset, DataFieldDescriptor &out);
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void fromBigEndian(uchar *buf, quint32 len);
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QVariant readMapValue(quint32 &offset, quint32 count);
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QVariant readArrayValue(quint32 &offset, quint32 count);
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template<typename T>
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QVariant readPlainValue(quint32 &offset, quint8 len)
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{
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T value = 0;
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const uchar *const data = m_data + offset;
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const quint32 availSize = m_size - offset;
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if ((len > 0) && (len <= sizeof(T) && (availSize >= len))) {
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// copy input data to last 'len' bytes of 'value'
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uchar *dst = reinterpret_cast<uchar *>(&value) + (sizeof(T) - len);
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memcpy(dst, data, len);
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fromBigEndian(reinterpret_cast<uchar *>(&value), sizeof(T));
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offset += len;
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}
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return QVariant::fromValue(value);
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}
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private:
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const uchar *m_data;
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quint32 m_size;
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QString m_error;
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GeoIPData *m_geoIPData;
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};
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}
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// GeoIPDatabase
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GeoIPDatabase::GeoIPDatabase(GeoIPData *geoIPData)
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: m_geoIPData(geoIPData)
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{
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}
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GeoIPDatabase *GeoIPDatabase::load(const QString &filename, QString &error)
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{
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GeoIPDatabase *db = 0;
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Loader loader;
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GeoIPData *geoIPData = loader.load(filename);
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if (!geoIPData)
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error = loader.error();
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else
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db = new GeoIPDatabase(geoIPData);
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return db;
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}
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GeoIPDatabase *GeoIPDatabase::load(const QByteArray &data, QString &error)
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{
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GeoIPDatabase *db = 0;
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Loader loader;
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GeoIPData *geoIPData = loader.load(data);
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if (!geoIPData)
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error = loader.error();
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else
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db = new GeoIPDatabase(geoIPData);
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return db;
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}
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GeoIPDatabase::~GeoIPDatabase()
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{
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delete m_geoIPData;
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}
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QString GeoIPDatabase::type() const
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{
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return DB_TYPE;
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}
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quint16 GeoIPDatabase::ipVersion() const
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{
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return m_geoIPData->ipVersion;
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}
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QDateTime GeoIPDatabase::buildEpoch() const
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{
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return m_geoIPData->buildEpoch;
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}
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QString GeoIPDatabase::lookup(const QHostAddress &hostAddr) const
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{
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#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
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Q_IPV6ADDR addr = hostAddr.protocol() == QAbstractSocket::IPv4Protocol
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? createMappedAddress(hostAddr.toIPv4Address())
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: hostAddr.toIPv6Address();
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#else
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Q_IPV6ADDR addr = hostAddr.toIPv6Address();
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#endif
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const quint32 nodeCount = static_cast<quint32>(m_geoIPData->index.size());
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Node node = m_geoIPData->index[0];
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for (int i = 0; i < 16; ++i) {
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for (int j = 0; j < 8; ++j) {
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bool right = static_cast<bool>((addr[i] >> (7 - j)) & 1);
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quint32 id = (right ? node.right : node.left);
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if (id == nodeCount)
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return QString();
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else if (id > nodeCount)
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return m_geoIPData->countries[id];
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else
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node = m_geoIPData->index[id];
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}
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}
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return QString();
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}
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namespace
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{
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// Loader
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GeoIPData *Loader::load(const QString &filename)
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{
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QFile file(filename);
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if (file.size() > MAX_FILE_SIZE) {
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m_error = tr("Unsupported database file size.");
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return 0;
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}
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if (!file.open(QFile::ReadOnly)) {
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m_error = file.errorString();
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return 0;
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}
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m_size = file.size();
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QScopedArrayPointer<uchar> data(new uchar[m_size]);
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m_data = data.data();
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if (file.read((char *)m_data, m_size) != m_size) {
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m_error = file.errorString();
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return 0;
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}
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QScopedPointer<GeoIPData> geoIPData(new GeoIPData);
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m_geoIPData = geoIPData.data();
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if (!parseMetadata(readMetadata()) || !loadDB())
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return 0;
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return geoIPData.take();
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}
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GeoIPData *Loader::load(const QByteArray &data)
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{
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if (data.size() > MAX_FILE_SIZE) {
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m_error = tr("Unsupported database file size.");
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return 0;
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}
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m_size = data.size();
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m_data = reinterpret_cast<const uchar *>(data.constData());
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QScopedPointer<GeoIPData> geoIPData(new GeoIPData);
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m_geoIPData = geoIPData.data();
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if (!parseMetadata(readMetadata()) || !loadDB())
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return 0;
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return geoIPData.take();
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}
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QString Loader::error() const
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{
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return m_error;
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}
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#define CHECK_METADATA_REQ(key, type) \
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if (!metadata.contains(#key)) { \
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m_error = errMsgNotFound.arg(#key); \
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return false; \
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} \
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else if (metadata.value(#key).userType() != QMetaType::type) { \
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m_error = errMsgInvalid.arg(#key); \
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return false; \
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}
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#define CHECK_METADATA_OPT(key, type) \
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if (metadata.contains(#key)) { \
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if (metadata.value(#key).userType() != QMetaType::type) { \
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m_error = errMsgInvalid.arg(#key); \
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return false; \
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} \
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}
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bool Loader::parseMetadata(const QVariantHash &metadata)
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{
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const QString errMsgNotFound = tr("Metadata error: '%1' entry not found.");
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const QString errMsgInvalid = tr("Metadata error: '%1' entry has invalid type.");
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qDebug() << "Parsing MaxMindDB metadata...";
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CHECK_METADATA_REQ(binary_format_major_version, UShort);
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CHECK_METADATA_REQ(binary_format_minor_version, UShort);
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uint versionMajor = metadata.value("binary_format_major_version").toUInt();
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uint versionMinor = metadata.value("binary_format_minor_version").toUInt();
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if (versionMajor != 2) {
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m_error = tr("Unsupported database version: %1.%2").arg(versionMajor).arg(versionMinor);
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return false;
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}
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CHECK_METADATA_REQ(ip_version, UShort);
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m_geoIPData->ipVersion = metadata.value("ip_version").value<quint16>();
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if (m_geoIPData->ipVersion != 6) {
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m_error = tr("Unsupported IP version: %1").arg(m_geoIPData->ipVersion);
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return false;
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}
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CHECK_METADATA_REQ(record_size, UShort);
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m_geoIPData->recordSize = metadata.value("record_size").value<quint16>();
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if (m_geoIPData->recordSize != 24) {
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m_error = tr("Unsupported record size: %1").arg(m_geoIPData->recordSize);
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return false;
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}
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CHECK_METADATA_REQ(node_count, UInt);
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m_geoIPData->nodeCount = metadata.value("node_count").value<quint32>();
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CHECK_METADATA_REQ(database_type, QString);
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QString dbType = metadata.value("database_type").toString();
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if (dbType != DB_TYPE) {
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m_error = tr("Invalid database type: %1").arg(dbType);
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return false;
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}
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CHECK_METADATA_REQ(build_epoch, ULongLong);
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m_geoIPData->buildEpoch = QDateTime::fromTime_t(metadata.value("build_epoch").toULongLong());
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CHECK_METADATA_OPT(languages, QVariantList);
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CHECK_METADATA_OPT(description, QVariantHash);
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return true;
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}
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bool Loader::loadDB()
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{
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qDebug() << "Parsing MaxMindDB index tree...";
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const int nodeSize = m_geoIPData->recordSize / 4; // in bytes
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const int indexSize = m_geoIPData->nodeCount * nodeSize;
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if ((m_size < (indexSize + sizeof(DATA_SECTION_SEPARATOR)))
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|| (memcmp(m_data + indexSize, DATA_SECTION_SEPARATOR, sizeof(DATA_SECTION_SEPARATOR)) != 0)) {
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m_error = tr("Database corrupted: no data section found.");
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return false;
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}
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m_geoIPData->index.reserve(m_geoIPData->nodeCount);
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const int recordBytes = nodeSize / 2;
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const uchar *ptr = m_data;
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bool left = true;
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Node node;
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for (quint32 i = 0; i < (2 * m_geoIPData->nodeCount); ++i) {
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uchar buf[4] = { 0 };
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memcpy(&buf[4 - recordBytes], ptr, recordBytes);
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fromBigEndian(buf, 4);
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quint32 id = *(reinterpret_cast<quint32 *>(buf));
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if ((id > m_geoIPData->nodeCount) && !m_geoIPData->countries.contains(id)) {
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const quint32 offset = id - m_geoIPData->nodeCount - sizeof(DATA_SECTION_SEPARATOR);
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quint32 tmp = offset + indexSize + sizeof(DATA_SECTION_SEPARATOR);
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QVariant val = readDataField(tmp);
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if (val.userType() == QMetaType::QVariantHash) {
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m_geoIPData->countries[id] = val.toHash()["country"].toHash()["iso_code"].toString();
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}
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else if (val.userType() == QVariant::Invalid) {
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m_error = tr("Database corrupted: invalid data type at DATA@%1").arg(offset, 8, 16, QLatin1Char('0'));
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return false;
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}
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else {
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m_error = tr("Invalid database: unsupported data type at DATA@%1").arg(offset, 8, 16, QLatin1Char('0'));
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return false;
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}
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}
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if (left) {
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node.left = id;
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}
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else {
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node.right = id;
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m_geoIPData->index << node;
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}
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left = !left;
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ptr += recordBytes;
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}
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return true;
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}
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QVariantHash Loader::readMetadata()
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{
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const char *ptr = reinterpret_cast<const char *>(m_data);
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quint32 size = m_size;
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if (m_size > MAX_METADATA_SIZE) {
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ptr += m_size - MAX_METADATA_SIZE;
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size = MAX_METADATA_SIZE;
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}
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const QByteArray data = QByteArray::fromRawData(ptr, size);
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int index = data.lastIndexOf(METADATA_BEGIN_MARK);
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if (index >= 0) {
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if (m_size > MAX_METADATA_SIZE)
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index += (m_size - MAX_METADATA_SIZE); // from begin of all data
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quint32 offset = static_cast<quint32>(index + strlen(METADATA_BEGIN_MARK));
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QVariant metadata = readDataField(offset);
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m_size = index; // truncate m_size to not contain metadata section
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if (metadata.userType() == QMetaType::QVariantHash)
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return metadata.toHash();
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}
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return QVariantHash();
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}
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QVariant Loader::readDataField(quint32 &offset)
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{
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DataFieldDescriptor descr;
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if (!readDataFieldDescriptor(offset, descr))
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return QVariant();
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quint32 locOffset = offset;
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bool usePointer = false;
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if (descr.fieldType == DataType::Pointer) {
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usePointer = true;
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// convert offset from data section to global
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locOffset = descr.offset + (m_geoIPData->nodeCount * m_geoIPData->recordSize / 4) + sizeof(DATA_SECTION_SEPARATOR);
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if (!readDataFieldDescriptor(locOffset, descr))
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return QVariant();
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}
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QVariant fieldValue;
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switch (descr.fieldType) {
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case DataType::Pointer:
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qDebug() << "* Illegal Pointer using";
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break;
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case DataType::String:
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fieldValue = QString::fromUtf8(reinterpret_cast<const char *>(m_data + locOffset), descr.fieldSize);
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locOffset += descr.fieldSize;
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break;
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case DataType::Double:
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if (descr.fieldSize == 8)
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fieldValue = readPlainValue<double>(locOffset, descr.fieldSize);
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else
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qDebug() << "* Invalid field size for type: Double";
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break;
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case DataType::Bytes:
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fieldValue = QByteArray(reinterpret_cast<const char *>(m_data + locOffset), descr.fieldSize);
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locOffset += descr.fieldSize;
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break;
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case DataType::Integer16:
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fieldValue = readPlainValue<quint16>(locOffset, descr.fieldSize);
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break;
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case DataType::Integer32:
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fieldValue = readPlainValue<quint32>(locOffset, descr.fieldSize);
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break;
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||||
case DataType::Map:
|
||||
fieldValue = readMapValue(locOffset, descr.fieldSize);
|
||||
break;
|
||||
case DataType::SignedInteger32:
|
||||
fieldValue = readPlainValue<qint32>(locOffset, descr.fieldSize);
|
||||
break;
|
||||
case DataType::Integer64:
|
||||
fieldValue = readPlainValue<quint64>(locOffset, descr.fieldSize);
|
||||
break;
|
||||
case DataType::Integer128:
|
||||
qDebug() << "* Unsupported data type: Integer128";
|
||||
break;
|
||||
case DataType::Array:
|
||||
fieldValue = readArrayValue(locOffset, descr.fieldSize);
|
||||
break;
|
||||
case DataType::DataCacheContainer:
|
||||
qDebug() << "* Unsupported data type: DataCacheContainer";
|
||||
break;
|
||||
case DataType::EndMarker:
|
||||
qDebug() << "* Unsupported data type: EndMarker";
|
||||
break;
|
||||
case DataType::Boolean:
|
||||
fieldValue = QVariant::fromValue(static_cast<bool>(descr.fieldSize));
|
||||
break;
|
||||
case DataType::Float:
|
||||
if (descr.fieldSize == 4)
|
||||
fieldValue = readPlainValue<float>(locOffset, descr.fieldSize);
|
||||
else
|
||||
qDebug() << "* Invalid field size for type: Float";
|
||||
break;
|
||||
}
|
||||
|
||||
if (!usePointer)
|
||||
offset = locOffset;
|
||||
return fieldValue;
|
||||
}
|
||||
|
||||
bool Loader::readDataFieldDescriptor(quint32 &offset, DataFieldDescriptor &out)
|
||||
{
|
||||
const uchar *dataPtr = m_data + offset;
|
||||
int availSize = m_size - offset;
|
||||
if (availSize < 1) return false;
|
||||
|
||||
out.fieldType = static_cast<DataType>((dataPtr[0] & 0xE0) >> 5);
|
||||
if (out.fieldType == DataType::Pointer) {
|
||||
int size = ((dataPtr[0] & 0x18) >> 3);
|
||||
if (availSize < (size + 2)) return false;
|
||||
|
||||
if (size == 0)
|
||||
out.offset = ((dataPtr[0] & 0x07) << 8) + dataPtr[1];
|
||||
else if (size == 1)
|
||||
out.offset = ((dataPtr[0] & 0x07) << 16) + (dataPtr[1] << 8) + dataPtr[2] + 2048;
|
||||
else if (size == 2)
|
||||
out.offset = ((dataPtr[0] & 0x07) << 24) + (dataPtr[1] << 16) + (dataPtr[2] << 8) + dataPtr[3] + 526336;
|
||||
else if (size == 3)
|
||||
out.offset = (dataPtr[1] << 24) + (dataPtr[2] << 16) + (dataPtr[3] << 8) + dataPtr[4];
|
||||
|
||||
offset += size + 2;
|
||||
return true;
|
||||
}
|
||||
|
||||
out.fieldSize = dataPtr[0] & 0x1F;
|
||||
if (out.fieldSize <= 28) {
|
||||
if (out.fieldType == DataType::Unknown) {
|
||||
out.fieldType = static_cast<DataType>(dataPtr[1] + 7);
|
||||
if ((out.fieldType <= DataType::Map) || (out.fieldType > DataType::Float) || (availSize < 3))
|
||||
return false;
|
||||
offset += 2;
|
||||
}
|
||||
else {
|
||||
offset += 1;
|
||||
}
|
||||
}
|
||||
else if (out.fieldSize == 29) {
|
||||
if (availSize < 2) return false;
|
||||
out.fieldSize = dataPtr[1] + 29;
|
||||
offset += 2;
|
||||
}
|
||||
else if (out.fieldSize == 30) {
|
||||
if (availSize < 3) return false;
|
||||
out.fieldSize = (dataPtr[1] << 8) + dataPtr[2] + 285;
|
||||
offset += 3;
|
||||
}
|
||||
else if (out.fieldSize == 31) {
|
||||
if (availSize < 4) return false;
|
||||
out.fieldSize = (dataPtr[1] << 16) + (dataPtr[2] << 8) + dataPtr[3] + 65821;
|
||||
offset += 4;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void Loader::fromBigEndian(uchar *buf, quint32 len)
|
||||
{
|
||||
if (__IS_LITTLE_ENDIAN__)
|
||||
std::reverse(buf, buf + len);
|
||||
}
|
||||
|
||||
QVariant Loader::readMapValue(quint32 &offset, quint32 count)
|
||||
{
|
||||
QVariantHash map;
|
||||
|
||||
for (quint32 i = 0; i < count; ++i) {
|
||||
QVariant field = readDataField(offset);
|
||||
if (field.userType() != QMetaType::QString)
|
||||
return QVariant();
|
||||
|
||||
QString key = field.toString();
|
||||
field = readDataField(offset);
|
||||
if (field.userType() == QVariant::Invalid)
|
||||
return QVariant();
|
||||
|
||||
map[key] = field;
|
||||
}
|
||||
|
||||
return map;
|
||||
}
|
||||
|
||||
QVariant Loader::readArrayValue(quint32 &offset, quint32 count)
|
||||
{
|
||||
QVariantList array;
|
||||
|
||||
for (quint32 i = 0; i < count; ++i) {
|
||||
QVariant field = readDataField(offset);
|
||||
if (field.userType() == QVariant::Invalid)
|
||||
return QVariant();
|
||||
|
||||
array.append(field);
|
||||
}
|
||||
|
||||
return array;
|
||||
}
|
||||
|
||||
#if (QT_VERSION < QT_VERSION_CHECK(5, 0, 0))
|
||||
Q_IPV6ADDR createMappedAddress(quint32 ip4)
|
||||
{
|
||||
Q_IPV6ADDR ip6;
|
||||
memset(&ip6, 0, sizeof(ip6));
|
||||
|
||||
int i;
|
||||
for (i = 15; ip4 != 0; i--) {
|
||||
ip6[i] = ip4 & 0xFF;
|
||||
ip4 >>= 8;
|
||||
}
|
||||
|
||||
ip6[11] = 0xFF;
|
||||
ip6[10] = 0xFF;
|
||||
|
||||
return ip6;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue