FlightGear(开源)
FlightGear是一款开源飞行模拟器。项目始于1997年，主要目标是为学术科研领域创造一个尖端的飞行模拟器框架，也可拓展到飞行训练，飞行仿真，模拟飞行游戏等方面。
它支持全球三维实景，20,000多个跑道、400多种飞行器、跨平台、多人联飞、多样的开放飞行数据模型等功能。重点这是开源的。
源码
项目结构
Pro配置文件
在*.pro文件中需要添加
QT += network win32 { LIBS +=-lws2_32 }
mainWindow类
mainWindow.h
#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> #include "qttelnet.h" namespace Ui { class MainWindow; } class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); ~MainWindow(); QtTelnet * telnet ; private: Ui::MainWindow *ui; private slots: void telnetMessage(const QString &); void telnetLoginRequired(); // void telnetLoginFailed(); // 登录失败 void telnetLoggedOut(); // 退出成功 void telnetLoggedIn(); // 登录成功 void telnetConnectionError(QAbstractSocket::SocketError); // 连接错误 void on_pb_Link_clicked(); void on_pb_close_clicked(); void on_pb_Send_clicked(); }; #endif // MAINWINDOW_H
mainWindow.cpp
#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); telnet = new QtTelnet(this); connect(telnet, SIGNAL(message(const QString &)),this, SLOT(telnetMessage(const QString &))); connect(telnet, SIGNAL(loginRequired()),this, SLOT(telnetLoginRequired())); connect(telnet, SIGNAL(loginFailed()),this, SLOT(telnetLoginFailed())); connect(telnet, SIGNAL(loggedOut()),this, SLOT(telnetLoggedOut())); connect(telnet, SIGNAL(loggedIn()),this, SLOT(telnetLoggedIn())); connect(telnet, SIGNAL(connectionError(QAbstractSocket::SocketError)), this, SLOT(telnetConnectionError(QAbstractSocket::SocketError))); } MainWindow::~MainWindow() { delete ui; } void MainWindow::telnetMessage(const QString &msg) { ui->te_Msg->append(msg); } void MainWindow::telnetLoginRequired() { QString user = ui->le_User->text(); QString passwd = ui->le_Passwd->text(); if(user == "" || passwd == "") { ui->te_Msg->append("用户名和密码不能为空!"); return; } telnet->login(user,passwd); // 登入telnet // telnet->logout(); // 登出 } void MainWindow::telnetLoginFailed() { ui->te_Msg->append("登录失败!"); } void MainWindow::telnetLoggedOut() { ui->te_Msg->append("登出成功!"); } void MainWindow::telnetLoggedIn() { ui->te_Msg->append("登录成功!"); } void MainWindow::telnetConnectionError(QAbstractSocket::SocketError error) { ui->te_Msg->append(QString("连接错误: %1").arg(error)); } void MainWindow::on_pb_Link_clicked() { QString host = ui->le_Host->text(); if(host == "") { ui->te_Msg->append("IP地址不能为空!"); return ; } telnet->connectToHost(host); } void MainWindow::on_pb_close_clicked() { telnet->close(); } void MainWindow::on_pb_Send_clicked() { QString cmd = ui->le_SendText->text() + "\r\n" ; telnet->sendData(cmd); }
mainWindow.ui
<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>MainWindow</class> <widget class="QMainWindow" name="MainWindow"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>713</width> <height>483</height> </rect> </property> <property name="windowTitle"> <string>Telnet客户端</string> </property> <widget class="QWidget" name="centralWidget"> <layout class="QGridLayout" name="gridLayout"> <item row="0" column="0"> <widget class="QLabel" name="label"> <property name="text"> <string>IP地址：</string> </property> </widget> </item> <item row="0" column="1"> <widget class="QLineEdit" name="le_Host"/> </item> <item row="0" column="2"> <widget class="QLabel" name="label_2"> <property name="text"> <string>用户名：</string> </property> </widget> </item> <item row="0" column="3"> <widget class="QLineEdit" name="le_User"/> </item> <item row="0" column="4"> <widget class="QLabel" name="label_3"> <property name="text"> <string>密码：</string> </property> </widget> </item> <item row="0" column="5"> <widget class="QLineEdit" name="le_Passwd"/> </item> <item row="0" column="6"> <widget class="QPushButton" name="pb_Link"> <property name="text"> <string>连接</string> </property> </widget> </item> <item row="0" column="7"> <widget class="QPushButton" name="pb_close"> <property name="text"> <string>断开</string> </property> </widget> </item> <item row="1" column="0" colspan="8"> <widget class="QTextEdit" name="te_Msg"/> </item> <item row="2" column="7"> <widget class="QPushButton" name="pb_Send"> <property name="text"> <string>发送</string> </property> </widget> </item> <item row="2" column="0" colspan="7"> <widget class="QLineEdit" name="le_SendText"/> </item> </layout> </widget> </widget> <layoutdefault spacing="6" margin="11"/> <resources/> <connections/> </ui>
qttelnet类
qttelnet.h
/**************************************************************************** ** ** This file is part of a Qt Solutions component. ** ** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). ** ** Contact: Qt Software Information (qt-info@nokia.com) ** ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Solutions Commercial License Agreement provided ** with the Software or, alternatively, in accordance with the terms ** contained in a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** Please note Third Party Software included with Qt Solutions may impose ** additional restrictions and it is the user's responsibility to ensure ** that they have met the licensing requirements of the GPL, LGPL, or Qt ** Solutions Commercial license and the relevant license of the Third ** Party Software they are using. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at qt-sales@nokia.com. ** ****************************************************************************/ #ifndef QTTELNET_H #define QTTELNET_H #include <QtCore/QObject> #include <QtCore/QString> #include <QtCore/QSize> #include <QtCore/QRegExp> #include <QtNetwork/QTcpSocket> #include <QByteArray> class QtTelnetPrivate; #if defined(Q_WS_WIN) # if !defined(QT_QTTELNET_EXPORT) && !defined(QT_QTTELNET_IMPORT) # define QT_QTTELNET_EXPORT # elif defined(QT_QTTELNET_IMPORT) # if defined(QT_QTTELNET_EXPORT) # undef QT_QTTELNET_EXPORT # endif # define QT_QTTELNET_EXPORT __declspec(dllimport) # elif defined(QT_QTTELNET_EXPORT) # undef QT_QTTELNET_EXPORT # define QT_QTTELNET_EXPORT __declspec(dllexport) # endif #else # define QT_QTTELNET_EXPORT #endif class QT_QTTELNET_EXPORT QtTelnet : public QObject { Q_OBJECT friend class QtTelnetPrivate; public: QtTelnet(QObject *parent = 0); ~QtTelnet(); enum Control { GoAhead, InterruptProcess, AreYouThere, AbortOutput, EraseCharacter, EraseLine, Break, EndOfFile, Suspend, Abort }; void connectToHost(const QString &host, quint16 port = 23); void login(const QString &user, const QString &pass); void setWindowSize(const QSize &size); void setWindowSize(int width, int height); // In number of characters QSize windowSize() const; bool isValidWindowSize() const; void setSocket(QTcpSocket *socket); QTcpSocket *socket() const; void setPromptPattern(const QRegExp &pattern); void setPromptString(const QString &pattern) { setPromptPattern(QRegExp(QRegExp::escape(pattern))); } public Q_SLOTS: void close(); void logout(); void sendControl(Control ctrl); void sendData(const QString &data); void sendSync(); Q_SIGNALS: void loginRequired(); void loginFailed(); void loggedIn(); void loggedOut(); void connectionError(QAbstractSocket::SocketError error); void message(const QString &data); public: void setLoginPattern(const QRegExp &pattern); void setLoginString(const QString &pattern) { setLoginPattern(QRegExp(QRegExp::escape(pattern))); } void setPasswordPattern(const QRegExp &pattern); void setPasswordString(const QString &pattern) { setPasswordPattern(QRegExp(QRegExp::escape(pattern))); } private: QtTelnetPrivate *d; }; #endif
qttelnet.cpp
/**************************************************************************** ** ** This file is part of a Qt Solutions component. ** ** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). ** ** Contact: Qt Software Information (qt-info@nokia.com) ** ** Commercial Usage ** Licensees holding valid Qt Commercial licenses may use this file in ** accordance with the Qt Solutions Commercial License Agreement provided ** with the Software or, alternatively, in accordance with the terms ** contained in a written agreement between you and Nokia. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** Please note Third Party Software included with Qt Solutions may impose ** additional restrictions and it is the user's responsibility to ensure ** that they have met the licensing requirements of the GPL, LGPL, or Qt ** Solutions Commercial license and the relevant license of the Third ** Party Software they are using. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at qt-sales@nokia.com. ** ****************************************************************************/ /*! \class QtTelnet \brief The QtTelnet class proveds an API to connect to Telnet servers, issue commands and receive replies. When a QtTelnet object has been created, you need to call connectToHost() to establish a connection with a Telnet server. When the connection is established the connected() signal is emitted. At this point you should call login(). The QtTelnet object will emit connectionError() if the connection fails, and authenticationFailed() if the login() failed. Once the connection has been successfully established and you've logged in you can send control messages using sendControl() and data using sendData(). Connect to the message() signal to receive data from the Telnet server. The connection is closed with close(). You can use your own socket if you call setSocket() before connecting. The socket used by QtTelnet is available from socket(). */ #include "qttelnet.h" #include <QtNetwork/QTcpSocket> #include <QtCore/QList> #include <QtCore/QMap> #include <QtCore/QPair> #include <QtCore/QVariant> #include <QtCore/QSocketNotifier> #include <QtCore/QBuffer> #include <QtCore/QVarLengthArray> #ifdef Q_OS_WIN # include <winsock2.h> #endif #if defined (Q_OS_UNIX) # include <sys/types.h> # include <sys/socket.h> # include <netinet/in.h> #endif // #define QTTELNET_DEBUG #ifdef QTTELNET_DEBUG #include <QtCore/QDebug> #endif class QtTelnetAuth { public: enum State { AuthIntermediate, AuthSuccess, AuthFailure }; QtTelnetAuth(char code) : st(AuthIntermediate), cd(code) {}; virtual ~QtTelnetAuth() {} int code() const { return cd; } State state() const { return st; } void setState(State state) { st = state; }; virtual QByteArray authStep(const QByteArray &data) = 0; private: State st; int cd; }; class QtTelnetReceiveBuffer { public: QtTelnetReceiveBuffer() : bytesAvailable(0) {} void append(const QByteArray &data) { buffers.append(data); } void push_back(const QByteArray &data) { buffers.prepend(data); } long size() const { return bytesAvailable; } QByteArray readAll() { QByteArray a; while (!buffers.isEmpty()) { a.append(buffers.takeFirst()); } return a; } private: QList<QByteArray> buffers; long bytesAvailable; }; namespace Common // RFC854 { // Commands const uchar CEOF = 236; const uchar SUSP = 237; const uchar ABORT = 238; const uchar SE = 240; const uchar NOP = 241; const uchar DM = 242; const uchar BRK = 243; const uchar IP = 244; const uchar AO = 245; const uchar AYT = 246; const uchar EC = 247; const uchar EL = 248; const uchar GA = 249; const uchar SB = 250; const uchar WILL = 251; const uchar WONT = 252; const uchar DO = 253; const uchar DONT = 254; const uchar IAC = 255; // Types const char IS = 0; const char SEND = 1; const char Authentication = 37; // RFC1416, // implemented to always return NULL const char SuppressGoAhead = 3; // RFC858 const char Echo = 1; // RFC857, not implemented (returns WONT/DONT) const char LineMode = 34; // RFC1184, implemented const uchar LineModeEOF = 236, // RFC1184, not implemented LineModeSUSP = 237, LineModeABORT = 238; const char Status = 5; // RFC859, should be implemented! const char Logout = 18; // RFC727, implemented const char TerminalType = 24; // RFC1091, // implemented to always return UNKNOWN const char NAWS = 31; // RFC1073, implemented const char TerminalSpeed = 32; // RFC1079, not implemented const char FlowControl = 33; // RFC1372, should be implemented? const char XDisplayLocation = 35; // RFC1096, not implemented const char EnvironmentOld = 36; // RFC1408, should not be implemented! const char Environment = 39; // RFC1572, should be implemented const char Encrypt = 38; // RFC2946, not implemented #ifdef QTTELNET_DEBUG QString typeStr(char op) { QString str; switch (op) { case IS: str = "IS"; break; case SEND: str = "SEND"; break; default: str = QString("Unknown common type (%1)").arg(op); } return str; } QString operationStr(char op) { QString str; switch (quint8(op)) { case quint8(WILL): str = "WILL"; break; case quint8(WONT): str = "WONT"; break; case quint8(DO): str = "DO"; break; case quint8(DONT): str = "DONT"; break; case quint8(SB): str = "SB"; break; default: str = QString("Unknown operation (%1)").arg(quint8(op)); } return str; } QString optionStr(char op) { QString str; switch (op) { case Authentication: str = "AUTHENTICATION"; break; case SuppressGoAhead: str = "SUPPRESS GO AHEAD"; break; case Echo: str = "ECHO"; break; case LineMode: str = "LINEMODE"; break; case Status: str = "STATUS"; break; case Logout: str = "LOGOUT"; break; case TerminalType: str = "TERMINAL-TYPE"; break; case TerminalSpeed: str = "TERMINAL-SPEED"; break; case NAWS: str = "NAWS"; break; case FlowControl: str = "TOGGLE-FLOW-CONTROL"; break; case XDisplayLocation: str = "X-DISPLAY-LOCATION"; break; case EnvironmentOld: str = "ENVIRON"; break; case Environment: str = "NEW-ENVIRON"; break; case Encrypt: str = "ENCRYPT"; break; default: str = QString("Unknown option (%1)").arg(op); } return str; } #endif }; namespace Auth // RFC1416 { enum Auth { REPLY = 2, NAME }; enum Types { AUTHNULL, // Can't have enum values named NULL :/ KERBEROS_V4, KERBEROS_V5, SPX, SRA = 6, LOKI = 10 }; enum Modifiers { AUTH_WHO_MASK = 1, AUTH_CLIENT_TO_SERVER = 0, AUTH_SERVER_TO_CLIENT = 1, AUTH_HOW_MASK = 2, AUTH_HOW_ONE_WAY = 0, AUTH_HOW_MUTUAL = 2 }; enum SRA { SRA_KEY = 0, SRA_USER = 1, SRA_CONTINUE = 2, SRA_PASSWORD = 3, SRA_ACCEPT = 4, SRA_REJECT = 5 }; #ifdef QTTELNET_DEBUG QString authStr(int op) { QString str; switch (op) { case REPLY: str = "REPLY"; break; case NAME: str = "NAME"; break; default: str = QString("Unknown auth (%1)").arg(op); } return str; } QString typeStr(int op) { QString str; switch (op) { case AUTHNULL: str = "NULL"; break; case KERBEROS_V4: str = "KERBEROS_V4"; break; case KERBEROS_V5: str = "KERBEROS_V5"; break; case SPX: str = "SPX"; break; case SRA: str = "SRA"; break; case LOKI: str = "LOKI"; break; default: str = QString("Unknown auth type (%1)").arg(op); } return str; } QString whoStr(int op) { QString str; op = op & AUTH_WHO_MASK; switch (op) { case AUTH_CLIENT_TO_SERVER: str = "CLIENT"; break; case AUTH_SERVER_TO_CLIENT: str = "SERVER"; break; default: str = QString("Unknown who type (%1)").arg(op); } return str; } QString howStr(int op) { QString str; op = op & AUTH_HOW_MASK; switch (op) { case AUTH_HOW_ONE_WAY: str = "ONE-WAY"; break; case AUTH_HOW_MUTUAL: str = "MUTUAL"; break; default: str = QString("Unknown how type (%1)").arg(op); } return str; } QString sraStr(int op) { QString str; switch (op) { case SRA_KEY: str = "KEY"; break; case SRA_REJECT: str = "REJECT"; break; case SRA_ACCEPT: str = "ACCEPT"; break; case SRA_USER: str = "USER"; break; case SRA_CONTINUE: str = "CONTINUE"; break; case SRA_PASSWORD: str = "PASSWORD"; break; default: str = QString("Unknown SRA option (%1)").arg(op); } return str; } #endif }; namespace LineMode // RFC1184 { const char Mode = 1; const char ForwardMask = 2; const char SLC = 3; enum Modes { EDIT = 1, TRAPSIG = 2, MODE_ACK = 4, SOFT_TAB = 8, LIT_ECHO = 16 }; enum SLCs { SLC_SYNCH = 1, SLC_BRK = 2, SLC_IP = 3, SLC_AO = 4, SLC_AYT = 5, SLC_EOR = 6, SLC_ABORT = 7, SLC_EOF = 8, SLC_SUSP = 9, SLC_EC = 10, SLC_EL = 11, SLC_EW = 12, SLC_RP = 13, SLC_LNEXT = 14, SLC_XON = 15, SLC_XOFF = 16, SLC_FORW1 = 17, SLC_FORW2 = 18, SLC_MCL = 19, SLC_MCR = 20, SLC_MCWL = 21, SLC_MCWR = 22, SLC_MCBOL = 23, SLC_MCEOL = 24, SLC_INSRT = 25, SLC_OVER = 26, SLC_ECR = 27, SLC_EWR = 28, SLC_EBOL = 29, SLC_EEOL = 30, SLC_DEFAULT = 3, SLC_VALUE = 2, SLC_CANTCHANGE = 1, SLC_NOSUPPORT = 0, SLC_LEVELBITS = 3, SLC_ACK = 128, SLC_FLUSHIN = 64, SLC_FLUSHOUT = 32 }; }; class QtTelnetAuthNull : public QtTelnetAuth { public: QtTelnetAuthNull() : QtTelnetAuth(0) {} QByteArray authStep(const QByteArray &data); }; QByteArray QtTelnetAuthNull::authStep(const QByteArray &data) { Q_ASSERT(data[0] == Common::Authentication); if (data.size() < 2 || data[1] != Common::SEND) return QByteArray(); const char buf[8] = {(char)Common::IAC, (char)Common::SB, (char)Common::Authentication, (char)Common::IS, (char)Auth::AUTHNULL, 0, // CLIENT|ONE-WAY (char)Common::IAC, (char)Common::SE}; setState(AuthSuccess); return QByteArray(buf, sizeof(buf)); } class QtTelnetPrivate : public QObject { Q_OBJECT public: QtTelnetPrivate(QtTelnet *parent); ~QtTelnetPrivate(); QMap<char, bool> modes; QList< QPair<uchar, uchar> > osent; QtTelnet *q; QTcpSocket *socket; QtTelnetReceiveBuffer buffer; QSocketNotifier *notifier; QSize windowSize; bool connected, nocheckp; bool triedlogin, triedpass, firsttry; QMap<int, QtTelnetAuth*> auths; QtTelnetAuth *curauth; bool nullauth; QRegExp loginp, passp, promptp; QString login, pass; bool allowOption(int oper, int opt); void sendOptions(); void sendCommand(const QByteArray &command); void sendCommand(const char *command, int length); void sendCommand(const char operation, const char option); void sendString(const QString &str); bool replyNeeded(uchar operation, uchar option); void setMode(uchar operation, uchar option); bool alreadySent(uchar operation, uchar option); void addSent(uchar operation, uchar option); void sendWindowSize(); int parsePlaintext(const QByteArray &data); int parseIAC(const QByteArray &data); bool isOperation(const uchar c); bool isCommand(const uchar c); QByteArray getSubOption(const QByteArray &data); void parseSubAuth(const QByteArray &data); void parseSubTT(const QByteArray &data); void parseSubNAWS(const QByteArray &data); uchar opposite(uchar operation, bool positive); void consume(); void setSocket(QTcpSocket *socket); public slots: void socketConnected(); void socketConnectionClosed(); void socketReadyRead(); void socketError(QAbstractSocket::SocketError error); void socketException(int); }; QtTelnetPrivate::QtTelnetPrivate(QtTelnet *parent) : q(parent), socket(0), notifier(0), connected(false), nocheckp(false), triedlogin(false), triedpass(false), firsttry(true), curauth(0), nullauth(false), loginp("ogin:\\s*$"), passp("assword:\\s*$") { setSocket(new QTcpSocket(this)); } QtTelnetPrivate::~QtTelnetPrivate() { delete socket; delete notifier; delete curauth; } void QtTelnetPrivate::setSocket(QTcpSocket *s) { if (socket) { q->logout(); socket->flush(); } delete socket; socket = s; connected = false; if (socket) { connect(socket, SIGNAL(connected()), this, SLOT(socketConnected())); connect(socket, SIGNAL(disconnected()), this, SLOT(socketConnectionClosed())); connect(socket, SIGNAL(readyRead()), this, SLOT(socketReadyRead())); connect(socket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(socketError(QAbstractSocket::SocketError))); } } /* Returns the opposite value of the one we pass in. */ uchar QtTelnetPrivate::opposite(uchar operation, bool positive) { if (operation == Common::DO) return (positive ? Common::WILL : Common::WONT); else if (operation == Common::DONT) // Not allowed to say WILL return Common::WONT; else if (operation == Common::WILL) return (positive ? Common::DO : Common::DONT); else if (operation == Common::WONT) // Not allowed to say DO return Common::DONT; return 0; } void QtTelnetPrivate::consume() { const QByteArray data = buffer.readAll(); int currpos = 0; int prevpos = -1;; while (prevpos < currpos && currpos < data.size()) { prevpos = currpos; const uchar c = uchar(data[currpos]); if (c == Common::DM) ++currpos; else if (c == Common::IAC) currpos += parseIAC(data.mid(currpos)); else // Assume plain text currpos += parsePlaintext(data.mid(currpos)); } if (currpos < data.size()) buffer.push_back(data.mid(currpos)); } bool QtTelnetPrivate::isCommand(const uchar c) { return (c == Common::DM); } bool QtTelnetPrivate::isOperation(const uchar c) { return (c == Common::WILL || c == Common::WONT || c == Common::DO ||c == Common::DONT); } QByteArray QtTelnetPrivate::getSubOption(const QByteArray &data) { Q_ASSERT(!data.isEmpty() && uchar(data[0]) == Common::IAC); if (data.size() < 4 || uchar(data[1]) != Common::SB) return QByteArray(); for (int i = 2; i < data.size() - 1; ++i) { if (uchar(data[i]) == Common::IAC && uchar(data[i+1]) == Common::SE) { return data.mid(2, i-2); } } return QByteArray(); } void QtTelnetPrivate::parseSubNAWS(const QByteArray &data) { Q_UNUSED(data); } void QtTelnetPrivate::parseSubTT(const QByteArray &data) { Q_ASSERT(!data.isEmpty() && data[0] == Common::TerminalType); if (data.size() < 2 || data[1] != Common::SEND) return; const char c1[4] = { (char)Common::IAC, (char)Common::SB, (char)Common::TerminalType, (char)Common::IS}; sendCommand(c1, sizeof(c1)); sendString("UNKNOWN"); const char c2[2] = { (char)Common::IAC, (char)Common::SE }; sendCommand(c2, sizeof(c2)); } void QtTelnetPrivate::parseSubAuth(const QByteArray &data) { Q_ASSERT(data[0] == Common::Authentication); if (!curauth && data[1] == Common::SEND) { int pos = 2; while (pos < data.size() && !curauth) { curauth = auths[data[pos]]; pos += 2; if (curauth) { emit q->loginRequired(); break; } } if (!curauth) { curauth = new QtTelnetAuthNull; nullauth = true; if (loginp.isEmpty() && passp.isEmpty()) { // emit q->loginRequired(); nocheckp = true; } } } if (curauth) { const QByteArray a = curauth->authStep(data); if (!a.isEmpty()) sendCommand(a); if (curauth->state() == QtTelnetAuth::AuthFailure) emit q->loginFailed(); else if (curauth->state() == QtTelnetAuth::AuthSuccess) { if (loginp.isEmpty() && passp.isEmpty()) emit q->loggedIn(); if (!nullauth) nocheckp = true; } } } /* returns number of bytes consumed */ int QtTelnetPrivate::parseIAC(const QByteArray &data) { if (data.isEmpty()) return 0; Q_ASSERT(uchar(data.at(0)) == Common::IAC); if (data.size() >= 3 && isOperation(data[1])) { // IAC, Operation, Option const uchar operation = data[1]; const uchar option = data[2]; if (operation == Common::WONT && option == Common::Logout) { q->close(); return 3; } if (operation == Common::DONT && option == Common::Authentication) { if (loginp.isEmpty() && passp.isEmpty()) emit q->loggedIn(); nullauth = true; } if (replyNeeded(operation, option)) { bool allowed = allowOption(operation, option); sendCommand(opposite(operation, allowed), option); setMode(operation, option); } return 3; } if (data.size() >= 2 && isCommand(data[1])) { // IAC Command return 2; } QByteArray suboption = getSubOption(data); if (suboption.isEmpty()) return 0; // IAC SB Operation SubOption [...] IAC SE switch (suboption[0]) { case Common::Authentication: parseSubAuth(suboption); break; case Common::TerminalType: parseSubTT(suboption); break; case Common::NAWS: parseSubNAWS(data); break; default: qWarning("QtTelnetPrivate::parseIAC: unknown suboption %d", quint8(suboption.at(0))); break; } return suboption.size() + 4; } int QtTelnetPrivate::parsePlaintext(const QByteArray &data) { int consumed = 0; int length = data.indexOf('\0'); if (length == -1) { length = data.size(); consumed = length; } else { consumed = length + 1; // + 1 for removing '\0' } QString text = QString::fromLocal8Bit(data.constData(), length); if (!nocheckp && nullauth) { if (!promptp.isEmpty() && promptp.indexIn(text) != -1) { emit q->loggedIn(); nocheckp = true; } } if (!nocheckp && nullauth) { if (!loginp.isEmpty() && loginp.indexIn(text) != -1) { if (triedlogin || firsttry) { emit q->message(text); // Display the login prompt text.clear(); emit q->loginRequired(); // Get a (new) login firsttry = false; } if (!triedlogin) { q->sendData(login); triedlogin = true; } } if (!passp.isEmpty() && passp.indexIn(text) != -1) { if (triedpass || firsttry) { emit q->message(text); // Display the password prompt text.clear(); emit q->loginRequired(); // Get a (new) pass firsttry = false; } if (!triedpass) { q->sendData(pass); triedpass = true; // We don't have to store the password anymore pass.fill(' '); pass.resize(0); } } } if (!text.isEmpty()) emit q->message(text); return consumed; } bool QtTelnetPrivate::replyNeeded(uchar operation, uchar option) { if (operation == Common::DO || operation == Common::DONT) { // RFC854 requires that we don't acknowledge // requests to enter a mode we're already in if (operation == Common::DO && modes[option]) return false; if (operation == Common::DONT && !modes[option]) return false; } return true; } void QtTelnetPrivate::setMode(uchar operation, uchar option) { if (operation != Common::DO && operation != Common::DONT) return; modes[option] = (operation == Common::DO); if (option == Common::NAWS && modes[Common::NAWS]) sendWindowSize(); } void QtTelnetPrivate::sendWindowSize() { if (!modes[Common::NAWS]) return; if (!q->isValidWindowSize()) return; short h = htons(windowSize.height()); short w = htons(windowSize.width()); char c[9] = { (char)Common::IAC, (char)Common::SB, (char)Common::NAWS, (char)(w & 0x00ff), (char)(w >> 8), (char)(h & 0x00ff), (char)(h >> 8), (char)Common::IAC, (char)Common::SE }; sendCommand(c, sizeof(c)); } void QtTelnetPrivate::addSent(uchar operation, uchar option) { osent.append(QPair<uchar, uchar>(operation, option)); } bool QtTelnetPrivate::alreadySent(uchar operation, uchar option) { QPair<uchar, uchar> value(operation, option); if (osent.contains(value)) { osent.removeAll(value); return true; } return false; } void QtTelnetPrivate::sendString(const QString &str) { if (!connected || str.length() == 0) return; socket->write(str.toLocal8Bit()); } void QtTelnetPrivate::sendCommand(const QByteArray &command) { if (!connected || command.isEmpty()) return; if (command.size() == 3) { const char operation = command.at(1); const char option = command.at(2); if (alreadySent(operation, option)) return; addSent(operation, option); } socket->write(command); } void QtTelnetPrivate::sendCommand(const char operation, const char option) { const char c[3] = { (char)Common::IAC, operation, option }; sendCommand(c, 3); } void QtTelnetPrivate::sendCommand(const char *command, int length) { QByteArray a(command, length); sendCommand(a); } bool QtTelnetPrivate::allowOption(int /*oper*/, int opt) { if (opt == Common::Authentication || opt == Common::SuppressGoAhead || opt == Common::LineMode || opt == Common::Status || opt == Common::Logout || opt == Common::TerminalType) return true; if (opt == Common::NAWS && q->isValidWindowSize()) return true; return false; } void QtTelnetPrivate::sendOptions() { sendCommand(Common::WILL, Common::Authentication); sendCommand(Common::DO, Common::SuppressGoAhead); sendCommand(Common::WILL, Common::LineMode); sendCommand(Common::DO, Common::Status); if (q->isValidWindowSize()) sendCommand(Common::WILL, Common::NAWS); } void QtTelnetPrivate::socketConnected() { connected = true; delete notifier; notifier = new QSocketNotifier(socket->socketDescriptor(), QSocketNotifier::Exception, this); connect(notifier, SIGNAL(activated(int)), this, SLOT(socketException(int))); sendOptions(); } void QtTelnetPrivate::socketException(int) { // qDebug("out-of-band data received, should handle that here!"); } void QtTelnetPrivate::socketConnectionClosed() { delete notifier; notifier = 0; connected = false; emit q->loggedOut(); } void QtTelnetPrivate::socketReadyRead() { buffer.append(socket->readAll()); consume(); } void QtTelnetPrivate::socketError(QAbstractSocket::SocketError error) { emit q->connectionError(error); } /*! \enum QtTelnet::Control This enum specifies control messages you can send to the Telnet server using sendControl(). \value GoAhead Sends the \c GO \c AHEAD control message, meaning that the server can continue to send data. \value InterruptProcess Interrupts the current running process on the server. This is the equivalent of pressing \key{Ctrl+C} in most terminal emulators. \value AreYouThere Sends the \c ARE \c YOU \c THERE control message, to check if the connection is still alive. \value AbortOutput Temporarily suspends the output from the server. The output will resume if you send this control message again. \value EraseCharacter Erases the last entered character. \value EraseLine Erases the last line. \value Break Sends the \c BREAK control message. \value EndOfFile Sends the \c END \c OF \c FILE control message. \value Suspend Suspends the current running process on the server. Equivalent to pressing \key{Ctrl+Z} in most terminal emulators. \value Abort Sends the \c ABORT control message. \sa sendControl() */ /*! Constructs a QtTelnet object. You must call connectToHost() before calling any of the other member functions. The \a parent is sent to the QObject constructor. \sa connectToHost() */ QtTelnet::QtTelnet(QObject *parent) : QObject(parent), d(new QtTelnetPrivate(this)) { } /*! Destroys the QtTelnet object. This will also close the connection to the server. \sa logout() */ QtTelnet::~QtTelnet() { delete d; } /*! Calling this function will make the QtTelnet object attempt to connect to a Telnet server specified by the given \a host and \a port. The connected() signal is emitted if the connection succeeds, and the connectionError() signal is emitted if the connection fails. Once the connection is establishe you must call login(). \sa close() */ void QtTelnet::connectToHost(const QString &host, quint16 port) { if (d->connected) return; d->socket->connectToHost(host, port); } /*! Closes the connection to a Telnet server. \sa connectToHost() login() */ void QtTelnet::close() { if (!d->connected) return; delete d->notifier; d->notifier = 0; d->connected = false; d->socket->close(); emit loggedOut(); } /*! Sends the control message \a ctrl to the Telnet server the QtTelnet object is connected to. \sa Control sendData() sendSync() */ void QtTelnet::sendControl(Control ctrl) { bool sendsync = false; char c; switch (ctrl) { case InterruptProcess: // Ctrl-C c = Common::IP; sendsync = true; break; case AbortOutput: // suspend/resume output c = Common::AO; sendsync = true; break; case Break: c = Common::BRK; break; case Suspend: // Ctrl-Z c = Common::SUSP; break; case EndOfFile: c = Common::CEOF; break; case Abort: c = Common::ABORT; break; case GoAhead: c = Common::GA; break; case AreYouThere: c = Common::AYT; sendsync = true; break; case EraseCharacter: c = Common::EC; break; case EraseLine: c = Common::EL; break; default: return; } const char command[2] = {(char)Common::IAC, c}; d->sendCommand(command, sizeof(command)); if (sendsync) sendSync(); } /*! Sends the string \a data to the Telnet server. This is often a command the Telnet server will execute. \sa sendControl() */ void QtTelnet::sendData(const QString &data) { if (!d->connected) return; QByteArray str = data.toLocal8Bit(); d->socket->write(str); //d->socket->write("\r\n\0", 3); } /*! This function will log you out of the Telnet server. You cannot send any other data after sending this command. \sa login() sendData() sendControl() */ void QtTelnet::logout() { d->sendCommand(Common::DO, Common::Logout); } /*! Sets the client window size to \a size. The width and height are given in number of characters. Non-visible clients should pass an invalid size (i.e. QSize()). \sa isValidWindowSize() */ void QtTelnet::setWindowSize(const QSize &size) { setWindowSize(size.width(), size.height()); } /*! Sets the client window size. The \a width and \a height are given in number of characters. \overload */ void QtTelnet::setWindowSize(int width, int height) { bool wasvalid = isValidWindowSize(); d->windowSize.setWidth(width); d->windowSize.setHeight(height); if (wasvalid && isValidWindowSize()) d->sendWindowSize(); else if (isValidWindowSize()) d->sendCommand(Common::WILL, Common::NAWS); else if (wasvalid) d->sendCommand(Common::WONT, Common::NAWS); } /*! Returns the window's size. This will be an invalid size if the Telnet server is not using the NAWS option (RFC1073). \sa isValidWindowSize() */ QSize QtTelnet::windowSize() const { return (d->modes[Common::NAWS] ? d->windowSize : QSize()); } /*! Returns true if the window size is valid, i.e. windowSize().isValid() returns true; otherwise returns false. \sa setWindowSize() */ bool QtTelnet::isValidWindowSize() const { return windowSize().isValid(); } /*! Set the \a socket to be used in the communication. This function allows you to use your own QSocket subclass. You should call this function before calling connectToHost(); if you call it after a connection has been established the connection will be closed, so in all cases you will need to call connectToHost() after calling this function. \sa socket(), connectToHost(), logout() */ void QtTelnet::setSocket(QTcpSocket *socket) { d->setSocket(socket); } /*! Returns the QTcpSocket instance used by this telnet object. \sa setSocket() */ QTcpSocket *QtTelnet::socket() const { return d->socket; } /*! Sends the Telnet \c SYNC sequence, meaning that the Telnet server should discard any data waiting to be processed once the \c SYNC sequence has been received. This is sent using a TCP urgent notification. \sa sendControl() */ void QtTelnet::sendSync() { if (!d->connected) return; d->socket->flush(); // Force the socket to send all the pending data before // sending the SYNC sequence. int s = d->socket->socketDescriptor(); char tosend = (char)Common::DM; ::send(s, &tosend, 1, MSG_OOB); // Send the DATA MARK as out-of-band } /*! Sets the expected shell prompt pattern. The \a pattern is used to automatically recognize when the client has successfully logged in. When a line is read that matches the \a pattern, the loggedIn() signal will be emitted. \sa login(), loggedIn() */ void QtTelnet::setPromptPattern(const QRegExp &pattern) { d->promptp = pattern; } /*! \fn void QtTelnet::setPromptString(const QString &pattern) Sets the expected shell prompt to \a pattern. \overload */ /*! Sets the expected login pattern. The \a pattern is used to automatically recognize when the server asks for a username. If no username has been set, the loginRequired() signal will be emitted. \sa login() */ void QtTelnet::setLoginPattern(const QRegExp &pattern) { d->loginp = pattern; } /*! \fn void QtTelnet::setLoginString(const QString &login) Sets the expected login string to \a login. \overload */ /*! Sets the expected password prompt pattern. The \a pattern is used to automatically recognize when the server asks for a password. If no password has been set, the loginRequired() signal will be emitted. \sa login() */ void QtTelnet::setPasswordPattern(const QRegExp &pattern) { d->passp = pattern; } /*! \fn void QtTelnet::setPasswordString(const QString &pattern) Sets the expected password prompt to \a pattern. \overload */ /*! Sets the \a username and \a password to be used when logging in to the server. \sa setLoginPattern(), setPasswordPattern() */ void QtTelnet::login(const QString &username, const QString &password) { d->triedpass = d->triedlogin = false; d->login = username; d->pass = password; } /*! \fn void QtTelnet::loginRequired() This signal is emitted when the QtTelnet class sees that the Telnet server expects authentication and you have not already called login(). As a reply to this signal you should either call login() or logout() \sa login(), logout() */ /*! \fn void QtTelnet::loginFailed() This signal is emitted when the login has failed. Do note that you might in certain cases see several loginRequired() signals being emitted but no loginFailed() signals. This is due to the Telnet specification not requiring the Telnet server to support reliable authentication methods. \sa login(), loginRequired() */ /*! \fn void QtTelnet::loggedOut() This signal is emitted when you have called logout() and the Telnet server has actually logged you out. \sa logout(), login() */ /*! \fn void QtTelnet::loggedIn() This signal is emitted when you have been logged in to the server as a result of the login() command being called. Do note that you might never see this signal even if you have been logged in, due to the Telnet specification not requiring Telnet servers to notify clients when users are logged in. \sa login(), setPromptPattern() */ /*! \fn void QtTelnet::connectionError(QAbstractSocket::SocketError error) This signal is emitted if the underlying socket implementation receives an error. The \a error argument is the same as being used in QSocket::connectionError() */ /*! \fn void QtTelnet::message(const QString &data) This signal is emitted when the QtTelnet object receives more \a data from the Telnet server. \sa sendData() */ #include "qttelnet.moc"
效果图
Error：‘telnet’ 不是内部或外部命令，也不是可运行的程序或批处理文件。
这个方法能解决大多数情况。一般是Windows默认未开启Tenlnet Client。需要我们手动开启。
Step1：打开控制面板
Step2：点程序
Step3：点启动或关闭Windows功能
Step4：找到Telnet Client 并勾上。
执行完以上步骤在启动cmd执行telnet IP命令就可以识别了。（我这是因为端口没开启，FlightGear在公司电脑上，我这个电脑没有，所以这里演示了）
编译报错：No such file or directory #include “qttelnet.moc”
这是因为你在构建项目时选择了构建目录，导致找不到qttelnet.mocl了。
在QtCeater右侧点击项目进入下面图片这个界面将shadow build的勾去掉等待项目更新。重写生成即可。
