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/*
Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
Her Majesty the Queen in Right of Canada (Communications Research
Center Canada)
Written by Matthias P. Braendli, matthias.braendli@mpb.li, 2012
*/
/*
This file is part of CRC-DADMOD.
CRC-DADMOD is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
CRC-DADMOD 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with CRC-DADMOD. If not, see <http://www.gnu.org/licenses/>.
*/
#include <list>
#include <string>
#include <iostream>
#include <string>
#include <boost/bind.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/asio.hpp>
#include "RemoteControl.h"
using boost::asio::ip::tcp;
void
RemoteControllerTelnet::process(long)
{
welcome_ = "CRC-DABMOD Remote Control CLI\nWrite 'help' for help.\n**********\n";
prompt_ = "> ";
std::string in_message;
size_t length;
try {
boost::asio::io_service io_service;
tcp::acceptor acceptor(io_service, tcp::endpoint(tcp::v4(), port_));
while (running_) {
in_message = "";
tcp::socket socket(io_service);
acceptor.accept(socket);
boost::system::error_code ignored_error;
boost::asio::write(socket, boost::asio::buffer(welcome_), ignored_error);
while (running_ && in_message != "quit") {
boost::asio::write(socket, boost::asio::buffer(prompt_), ignored_error);
in_message = "";
boost::asio::streambuf buffer;
length = boost::asio::read_until( socket, buffer, "\n", ignored_error);
std::istream str(&buffer);
std::getline(str, in_message);
if (length == 0) {
std::cerr << "Connection terminated" << std::endl;
break;
}
while (in_message.length() > 0 &&
(in_message[in_message.length()-1] == '\r' || in_message[in_message.length()-1] == '\n')) {
in_message.erase(in_message.length()-1, 1);
}
if (in_message.length() == 0) {
continue;
}
std::cerr << "Got message '" << in_message << "'" << std::endl;
dispatch_command(socket, in_message);
}
std::cerr << "Closing socket" << std::endl;
socket.close();
}
}
catch (std::exception& e)
{
std::cerr << e.what() << std::endl;
}
}
void
RemoteControllerTelnet::dispatch_command(tcp::socket& socket, string command)
{
vector<string> cmd = tokenise_(command);
if (cmd[0] == "help") {
reply(socket,
"The following commands are supported:\n"
" list\n"
" * Lists the modules that are loaded\n"
" list MODULE\n"
" * Lists the parameters exported by module MODULE\n"
" show MODULE\n"
" * Lists all parameters and their values from module MODULE\n"
" get MODULE PARAMETER\n"
" * Gets the value for the specified PARAMETER from module MODULE\n"
" set MODULE PARAMETER VALUE\n"
" * Sets the value for the PARAMETER ofr module MODULE\n"
" quit\n"
" * Terminate this session\n"
"\n");
}
else if (cmd[0] == "list") {
stringstream ss;
if (cmd.size() == 1) {
for (list<RemoteControllable*>::iterator it = cohort_.begin(); it != cohort_.end(); it++) {
ss << (*it)->get_rc_name() << " ";
}
}
else if (cmd.size() == 2) {
try {
stringstream ss;
list<string> params = get_param_list_(cmd[1]);
for (list<string>::iterator it = params.begin(); it != params.end(); it++) {
ss << *it << " ";
}
reply(socket, ss.str());
}
catch (ParameterError &e) {
reply(socket, e.what());
}
}
else {
reply(socket, "Too many arguments for command 'list'");
}
reply(socket, ss.str());
}
else if (cmd[0] == "show") {
if (cmd.size() == 2) {
try {
stringstream ss;
list< vector<string> > r = get_param_list_values_(cmd[1]);
for (list< vector<string> >::iterator it = r.begin(); it != r.end(); it++) {
ss << (*it)[0] << ": " << (*it)[1] << endl;
}
reply(socket, ss.str());
}
catch (ParameterError &e) {
reply(socket, e.what());
}
}
else
{
reply(socket, "Incorrect parameters for command 'show'");
}
}
else if (cmd[0] == "get") {
if (cmd.size() == 3) {
try {
string r = get_param_(cmd[1], cmd[2]);
reply(socket, r);
}
catch (ParameterError &e) {
reply(socket, e.what());
}
}
else
{
reply(socket, "Incorrect parameters for command 'get'");
}
}
else if (cmd[0] == "set") {
if (cmd.size() == 4) {
try {
set_param_(cmd[1], cmd[2], cmd[3]);
reply(socket, "ok");
}
catch (ParameterError &e) {
reply(socket, e.what());
}
}
else
{
reply(socket, "Incorrect parameters for command 'get'");
}
}
else if (cmd[0] == "quit") {
reply(socket, "Goodbye");
}
else {
reply(socket, "Message not understood");
}
}
void
RemoteControllerTelnet::reply(tcp::socket& socket, string message)
{
boost::system::error_code ignored_error;
stringstream ss;
ss << message << "\r\n";
boost::asio::write(socket, boost::asio::buffer(ss.str()), ignored_error);
}
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