1 /***************************************************************************
2 * Copyright (C) 2005-2018 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
24 #include "corenetwork.h"
25 #include "identserver.h"
27 IdentServer::IdentServer(bool strict, QObject *parent) : QObject(parent), _strict(strict), _socketId(0), _requestId(0) {
28 connect(&_server, SIGNAL(newConnection()), this, SLOT(incomingConnection()));
29 connect(&_v6server, SIGNAL(newConnection()), this, SLOT(incomingConnection()));
32 IdentServer::~IdentServer() = default;
34 bool IdentServer::startListening() {
35 uint16_t port = 10113;
38 if (_v6server.listen(QHostAddress("::1"), port)) {
39 quInfo() << qPrintable(
40 tr("Listening for identd clients on IPv6 %1 port %2")
42 .arg(_v6server.serverPort())
48 if (_server.listen(QHostAddress("127.0.0.1"), port)) {
51 quInfo() << qPrintable(
52 tr("Listening for identd clients on IPv4 %1 port %2")
54 .arg(_server.serverPort())
59 quError() << qPrintable(
60 tr("Identd could not open any network interfaces to listen on! No identd functionality will be available"));
66 void IdentServer::stopListening(const QString &msg) {
67 bool wasListening = false;
68 if (_server.isListening()) {
72 if (_v6server.isListening()) {
78 quInfo() << "No longer listening for identd clients.";
80 quInfo() << qPrintable(msg);
84 void IdentServer::incomingConnection() {
85 auto *server = qobject_cast<QTcpServer *>(sender());
87 while (server->hasPendingConnections()) {
88 QTcpSocket *socket = server->nextPendingConnection();
89 connect(socket, SIGNAL(readyRead()), this, SLOT(respond()));
93 void IdentServer::respond() {
94 QTcpSocket *socket = qobject_cast<QTcpSocket *>(sender());
97 qint64 transactionId = _socketId;
99 if (socket->canReadLine()) {
100 QByteArray query = socket->readLine();
101 if (query.endsWith("\r\n"))
103 else if (query.endsWith("\n"))
106 QList<QByteArray> split = query.split(',');
108 bool success = false;
111 if (!split.empty()) {
112 localPort = split[0].trimmed().toUShort(&success, 10);
115 Request request{socket, localPort, query, transactionId, _requestId++};
117 responseUnavailable(request);
118 } else if (!responseAvailable(request)) {
119 if (hasSocketsBelowId(transactionId)) {
120 _requestQueue.emplace_back(request);
122 responseUnavailable(request);
128 bool IdentServer::responseAvailable(Request request) {
131 if (_connections.contains(request.localPort)) {
132 user = _connections[request.localPort];
139 data += request.query + " : USERID : Quassel : " + user + "\r\n";
141 request.socket->write(data.toUtf8());
142 request.socket->flush();
143 request.socket->close();
148 void IdentServer::responseUnavailable(Request request) {
149 QString data = request.query + " : ERROR : NO-USER\r\n";
151 request.socket->write(data.toUtf8());
152 request.socket->flush();
153 request.socket->close();
157 bool IdentServer::addSocket(const CoreIdentity *identity, const QHostAddress &localAddress, quint16 localPort,
158 const QHostAddress &peerAddress, quint16 peerPort, qint64 socketId) {
159 Q_UNUSED(localAddress)
160 Q_UNUSED(peerAddress)
163 const CoreNetwork *network = qobject_cast<CoreNetwork *>(sender());
164 _connections[localPort] = network->coreSession()->strictCompliantIdent(identity);;
165 processWaiting(socketId);
170 bool IdentServer::removeSocket(const CoreIdentity *identity, const QHostAddress &localAddress, quint16 localPort,
171 const QHostAddress &peerAddress, quint16 peerPort, qint64 socketId) {
173 Q_UNUSED(localAddress)
174 Q_UNUSED(peerAddress)
177 _connections.remove(localPort);
178 processWaiting(socketId);
182 qint64 IdentServer::addWaitingSocket() {
183 qint64 newSocketId = _socketId++;
184 _waiting.push_back(newSocketId);
188 bool IdentServer::hasSocketsBelowId(qint64 id) {
189 return std::any_of(_waiting.begin(), _waiting.end(), [=](qint64 socketId) {
190 return socketId <= id;
194 void IdentServer::removeWaitingSocket(qint64 socketId) {
195 _waiting.remove(socketId);
198 void IdentServer::processWaiting(qint64 socketId) {
199 qint64 lowestSocketId = std::numeric_limits<qint64 >::max();
200 for (qint64 id : _waiting) {
201 if (id < lowestSocketId) {
205 removeWaitingSocket(socketId);
206 _requestQueue.remove_if([=](Request request) {
207 if (request.transactionId < lowestSocketId) {
208 responseUnavailable(request);
210 } else if (request.transactionId > socketId) {
211 return responseAvailable(request);
218 bool operator==(const Request &a, const Request &b) {
219 return a.requestId == b.requestId;