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Diffstat (limited to 'src/RemoteControl.h')
| -rw-r--r-- | src/RemoteControl.h | 233 | 
1 files changed, 233 insertions, 0 deletions
diff --git a/src/RemoteControl.h b/src/RemoteControl.h new file mode 100644 index 0000000..77dbff4 --- /dev/null +++ b/src/RemoteControl.h @@ -0,0 +1,233 @@ +/* +   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 module adds remote-control capability to some of the dabmod modules. +   see testremotecontrol/test.cpp for an example of how to use this. + */ +/* +   This file is part of CRC-DabMux. + +   CRC-DabMux 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-DabMux 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-DabMux.  If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef _REMOTECONTROL_H +#define _REMOTECONTROL_H + +#include <list> +#include <map> +#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 <boost/foreach.hpp> +#include <boost/tokenizer.hpp> +#include <boost/thread.hpp> +#include <stdexcept> + + +#define RC_ADD_PARAMETER(p, desc) {   \ +  vector<string> p; \ +  p.push_back(#p); \ +  p.push_back(desc); \ +  m_parameters.push_back(p); \ +} + + +using namespace std; +using boost::asio::ip::tcp; + +class ParameterError : public std::exception +{ +    public: +        ParameterError(string message) : m_message(message) {} +        ~ParameterError() throw() {}; +        const char* what() const throw() { return m_message.c_str(); } + +    private: +        string m_message; +}; + +class RemoteControllable; + +/* Remote controllers (that recieve orders from the user) must implement BaseRemoteController */ +class BaseRemoteController { +    public: +        /* Add a new controllable under this controller's command */ +        virtual void enrol(RemoteControllable* controllable) = 0; +}; + +/* Objects that support remote control must implement the following class */ +class RemoteControllable { +    public: + +        RemoteControllable(string name) : m_name(name) {} + +        /* return a short name used to identify the controllable. +         * It might be used in the commands the user has to type, so keep +         * it short +         */ +        virtual std::string get_rc_name() { return m_name; } + +        /* Tell the controllable to enrol at the given controller */ +        virtual void enrol_at(BaseRemoteController& controller) { +            controller.enrol(this); +        } + +        /* Return a list of possible parameters that can be set */ +        virtual list<string> get_supported_parameters() { +            cerr << "get_sup_par" << m_parameters.size() << endl; +            list<string> parameterlist; +            for (list< vector<string> >::iterator it = m_parameters.begin(); +                    it != m_parameters.end(); ++it) { +                parameterlist.push_back((*it)[0]); +            } +            return parameterlist; +        } + +        /* Return a mapping of the descriptions of all parameters */ +        virtual std::list< std::vector<std::string> > get_parameter_descriptions() { +            return m_parameters; +        } + +        /* Base function to set parameters. */ +        virtual void set_parameter(string parameter, string value) = 0; + +        /* Getting a parameter always returns a string. */ +        virtual string get_parameter(string parameter) = 0; + +    protected: +        std::string m_name; +        std::list< std::vector<std::string> > m_parameters; +}; + +/* Implements a Remote controller based on a simple telnet CLI + * that listens on localhost + */ +class RemoteControllerTelnet : public BaseRemoteController { +    public: +        RemoteControllerTelnet(int port) { +            m_port = port; +            m_running = false; +        }; + +        void start() { +            m_running = true; +            m_child_thread = boost::thread(&RemoteControllerTelnet::process, this, 0); +        } + +        void stop() { +            m_running = false; +            m_child_thread.interrupt(); +            m_child_thread.join(); +        } + +        void process(long); + +        void dispatch_command(tcp::socket& socket, string command); + +        void reply(tcp::socket& socket, string message); + +        void enrol(RemoteControllable* controllable) { +            m_cohort.push_back(controllable); +        } + + +    private: +        vector<string> tokenise_(string message) { +            vector<string> all_tokens; + +            boost::char_separator<char> sep(" "); +            boost::tokenizer< boost::char_separator<char> > tokens(message, sep); +            BOOST_FOREACH (const string& t, tokens) { +                all_tokens.push_back(t); +            } +            return all_tokens; +        } + +        RemoteControllable* get_controllable_(string name) { +            for (list<RemoteControllable*>::iterator it = m_cohort.begin(); +                    it != m_cohort.end(); ++it) { +                if ((*it)->get_rc_name() == name) +                { +                    return *it; +                } +            } +            throw ParameterError("Module name unknown"); +        } + +        list< vector<string> > get_parameter_descriptions_(string name) { +            RemoteControllable* controllable = get_controllable_(name); +            return controllable->get_parameter_descriptions(); +        } + +        list<string> get_param_list_(string name) { +            RemoteControllable* controllable = get_controllable_(name); +            return controllable->get_supported_parameters(); +        } + +        list< vector<string> > get_param_list_values_(string name) { +            RemoteControllable* controllable = get_controllable_(name); + +            list< vector<string> > allparams; +            list<string> params = controllable->get_supported_parameters(); +            cerr << "# of supported parameters " << params.size() << endl; +            for (list<string>::iterator it = params.begin(); it != params.end(); ++it) { +                vector<string> item; +                item.push_back(*it); +                item.push_back(controllable->get_parameter(*it)); + +                allparams.push_back(item); +            } +            return allparams; +        } + +        string get_param_(string name, string param) { +            RemoteControllable* controllable = get_controllable_(name); +            return controllable->get_parameter(param); +        } + +        void set_param_(string name, string param, string value) { +            RemoteControllable* controllable = get_controllable_(name); +            return controllable->set_parameter(param, value); +        } + +        bool m_running; +        boost::thread m_child_thread; + +        /* This controller commands the controllables in the cohort */ +        list<RemoteControllable*> m_cohort; + +        std::string m_welcome; +        std::string m_prompt; + +        int m_port; +}; + + +/* The Dummy remote controller does nothing + */ +class RemoteControllerDummy : public BaseRemoteController { +    public: +        void enrol(RemoteControllable* controllable) {}; +}; + +#endif +  | 
