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 = Quassel::optionValue("ident-port").toUShort();
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()) {
103 QByteArray query = socket->readLine();
104 if (query.endsWith("\r\n"))
106 else if (query.endsWith("\n"))
109 QList<QByteArray> split = query.split(',');
111 bool success = false;
113 quint16 localPort = 0;
114 if (!split.empty()) {
115 localPort = split[0].trimmed().toUShort(&success, 10);
118 Request request{socket, localPort, query, transactionId, _requestId++};
120 responseUnavailable(request);
121 } else if (responseAvailable(request)) {
123 } else if (lowestSocketId() < transactionId) {
124 _requestQueue.emplace_back(request);
126 responseUnavailable(request);
130 bool IdentServer::responseAvailable(Request request) {
131 if (!_connections.contains(request.localPort)) {
135 QString user = _connections[request.localPort];
136 QString data = request.query + " : USERID : Quassel : " + user + "\r\n";
138 request.socket->write(data.toUtf8());
139 request.socket->flush();
140 request.socket->close();
145 void IdentServer::responseUnavailable(Request request) {
146 QString data = request.query + " : ERROR : NO-USER\r\n";
148 request.socket->write(data.toUtf8());
149 request.socket->flush();
150 request.socket->close();
154 bool IdentServer::addSocket(const CoreIdentity *identity, const QHostAddress &localAddress, quint16 localPort,
155 const QHostAddress &peerAddress, quint16 peerPort, qint64 socketId) {
156 Q_UNUSED(localAddress)
157 Q_UNUSED(peerAddress)
160 const CoreNetwork *network = qobject_cast<CoreNetwork *>(sender());
161 _connections[localPort] = network->coreSession()->strictCompliantIdent(identity);;
162 processWaiting(socketId);
167 bool IdentServer::removeSocket(const CoreIdentity *identity, const QHostAddress &localAddress, quint16 localPort,
168 const QHostAddress &peerAddress, quint16 peerPort, qint64 socketId) {
170 Q_UNUSED(localAddress)
171 Q_UNUSED(peerAddress)
174 _connections.remove(localPort);
175 processWaiting(socketId);
179 qint64 IdentServer::addWaitingSocket() {
180 qint64 newSocketId = _socketId++;
181 _waiting.push_back(newSocketId);
185 qint64 IdentServer::lowestSocketId() {
186 if (_waiting.empty()) {
187 return std::numeric_limits<qint64>::max();
190 return _waiting.front();
193 void IdentServer::removeWaitingSocket(qint64 socketId) {
194 _waiting.remove(socketId);
197 void IdentServer::processWaiting(qint64 socketId) {
198 removeWaitingSocket(socketId);
199 _requestQueue.remove_if([=](Request request) {
200 if (socketId < request.transactionId && responseAvailable(request)) {
202 } else if (lowestSocketId() < request.transactionId) {
205 responseUnavailable(request);
211 bool operator==(const Request &a, const Request &b) {
212 return a.requestId == b.requestId;