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-rw-r--r--lib/RemoteControl.cpp579
1 files changed, 0 insertions, 579 deletions
diff --git a/lib/RemoteControl.cpp b/lib/RemoteControl.cpp
deleted file mode 100644
index 30dcb60..0000000
--- a/lib/RemoteControl.cpp
+++ /dev/null
@@ -1,579 +0,0 @@
-/*
- Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
- Her Majesty the Queen in Right of Canada (Communications Research
- Center Canada)
-
- Copyright (C) 2019
- Matthias P. Braendli, matthias.braendli@mpb.li
-
- http://www.opendigitalradio.org
- */
-/*
- This program 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.
-
- This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
- */
-#include <list>
-#include <string>
-#include <iostream>
-#include <string>
-#include <algorithm>
-
-#include "RemoteControl.h"
-#if defined(HAVE_ZEROMQ)
- #include "zmq.hpp"
-#endif
-
-using namespace std;
-
-RemoteControllerTelnet::~RemoteControllerTelnet()
-{
- m_active = false;
-
- if (m_restarter_thread.joinable()) {
- m_restarter_thread.join();
- }
-
- if (m_child_thread.joinable()) {
- m_child_thread.join();
- }
-}
-
-void RemoteControllerTelnet::restart()
-{
- if (m_restarter_thread.joinable()) {
- m_restarter_thread.join();
- }
-
- m_restarter_thread = std::thread(
- &RemoteControllerTelnet::restart_thread,
- this, 0);
-}
-
-RemoteControllable::~RemoteControllable() {
- rcs.remove_controllable(this);
-}
-
-std::list<std::string> RemoteControllable::get_supported_parameters() const {
- std::list<std::string> parameterlist;
- for (const auto& param : m_parameters) {
- parameterlist.push_back(param[0]);
- }
- return parameterlist;
-}
-
-void RemoteControllers::add_controller(std::shared_ptr<BaseRemoteController> rc) {
- m_controllers.push_back(rc);
-}
-
-void RemoteControllers::enrol(RemoteControllable *rc) {
- controllables.push_back(rc);
-}
-
-void RemoteControllers::remove_controllable(RemoteControllable *rc) {
- controllables.remove(rc);
-}
-
-std::list< std::vector<std::string> > RemoteControllers::get_param_list_values(const std::string& name) {
- RemoteControllable* controllable = get_controllable_(name);
-
- std::list< std::vector<std::string> > allparams;
- for (auto &param : controllable->get_supported_parameters()) {
- std::vector<std::string> item;
- item.push_back(param);
- try {
- item.push_back(controllable->get_parameter(param));
- }
- catch (const ParameterError &e) {
- item.push_back(std::string("error: ") + e.what());
- }
-
- allparams.push_back(item);
- }
- return allparams;
-}
-
-std::string RemoteControllers::get_param(const std::string& name, const std::string& param) {
- RemoteControllable* controllable = get_controllable_(name);
- return controllable->get_parameter(param);
-}
-
-void RemoteControllers::check_faults() {
- for (auto &controller : m_controllers) {
- if (controller->fault_detected()) {
- etiLog.level(warn) <<
- "Detected Remote Control fault, restarting it";
- controller->restart();
- }
- }
-}
-
-RemoteControllable* RemoteControllers::get_controllable_(const std::string& name)
-{
- auto rc = std::find_if(controllables.begin(), controllables.end(),
- [&](RemoteControllable* r) { return r->get_rc_name() == name; });
-
- if (rc == controllables.end()) {
- throw ParameterError("Module name unknown");
- }
- else {
- return *rc;
- }
-}
-
-void RemoteControllers::set_param(
- const std::string& name,
- const std::string& param,
- const std::string& value)
-{
- etiLog.level(info) << "RC: Setting " << name << " " << param
- << " to " << value;
- RemoteControllable* controllable = get_controllable_(name);
- try {
- return controllable->set_parameter(param, value);
- }
- catch (const ios_base::failure& e) {
- etiLog.level(info) << "RC: Failed to set " << name << " " << param
- << " to " << value << ": " << e.what();
- throw ParameterError("Cannot understand value");
- }
-}
-
-// This runs in a separate thread, because
-// it would take too long to be done in the main loop
-// thread.
-void RemoteControllerTelnet::restart_thread(long)
-{
- m_active = false;
-
- if (m_child_thread.joinable()) {
- m_child_thread.join();
- }
-
- m_child_thread = std::thread(&RemoteControllerTelnet::process, this, 0);
-}
-
-void RemoteControllerTelnet::handle_accept(Socket::TCPSocket&& socket)
-{
- const std::string welcome = PACKAGE_NAME " Remote Control CLI\n"
- "Write 'help' for help.\n"
- "**********\n";
- const std::string prompt = "> ";
-
- std::string in_message;
-
- try {
- etiLog.level(info) << "RC: Accepted";
-
- socket.sendall(welcome.data(), welcome.size());
-
- while (m_active and in_message != "quit") {
- socket.sendall(prompt.data(), prompt.size());
-
- stringstream in_message_stream;
-
- char last_char = '\0';
- try {
- while (last_char != '\n') {
- try {
- auto ret = socket.recv(&last_char, 1, 0, 1000);
- if (ret == 1) {
- in_message_stream << last_char;
- }
- else {
- break;
- }
- }
- catch (const Socket::TCPSocket::Timeout&) {
- if (not m_active) {
- break;
- }
- }
- }
- }
- catch (const Socket::TCPSocket::Interrupted&) {
- in_message_stream.clear();
- }
-
-
- if (in_message_stream.str().size() == 0) {
- etiLog.level(info) << "RC: Connection terminated";
- break;
- }
-
- std::getline(in_message_stream, in_message);
-
- 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;
- }
-
- etiLog.level(info) << "RC: Got message '" << in_message << "'";
-
- dispatch_command(socket, in_message);
- }
- etiLog.level(info) << "RC: Closing socket";
- socket.close();
- }
- catch (const std::exception& e) {
- etiLog.level(error) << "Remote control caught exception: " << e.what();
- }
-}
-
-void RemoteControllerTelnet::process(long)
-{
- try {
- m_active = true;
-
- m_socket.listen(m_port, "localhost");
-
- etiLog.level(info) << "RC: Waiting for connection on port " << m_port;
- while (m_active) {
- auto sock = m_socket.accept(1000);
-
- if (sock.valid()) {
- handle_accept(move(sock));
- etiLog.level(info) << "RC: Connection closed. Waiting for connection on port " << m_port;
- }
- }
- }
- catch (const runtime_error& e) {
- etiLog.level(warn) << "RC: Encountered error: " << e.what();
- }
-
- etiLog.level(info) << "RC: Leaving";
- m_fault = true;
-}
-
-static std::vector<std::string> tokenise(const std::string& message) {
- stringstream ss(message);
- std::vector<std::string> all_tokens;
- std::string item;
-
- while (std::getline(ss, item, ' ')) {
- all_tokens.push_back(move(item));
- }
- return all_tokens;
-}
-
-
-void RemoteControllerTelnet::dispatch_command(Socket::TCPSocket& 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 and their parameters\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 (auto &controllable : rcs.controllables) {
- ss << controllable->get_rc_name() << endl;
-
- list< vector<string> > params = controllable->get_parameter_descriptions();
- for (auto &param : params) {
- ss << "\t" << param[0] << " : " << param[1] << endl;
- }
- }
- }
- 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 = rcs.get_param_list_values(cmd[1]);
- for (auto &param_val : r) {
- ss << param_val[0] << ": " << param_val[1] << endl;
- }
- reply(socket, ss.str());
-
- }
- catch (const 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 = rcs.get_param(cmd[1], cmd[2]);
- reply(socket, r);
- }
- catch (const ParameterError &e) {
- reply(socket, e.what());
- }
- }
- else {
- reply(socket, "Incorrect parameters for command 'get'");
- }
- }
- else if (cmd[0] == "set") {
- if (cmd.size() >= 4) {
- try {
- stringstream new_param_value;
- for (size_t i = 3; i < cmd.size(); i++) {
- new_param_value << cmd[i];
-
- if (i+1 < cmd.size()) {
- new_param_value << " ";
- }
- }
-
- rcs.set_param(cmd[1], cmd[2], new_param_value.str());
- reply(socket, "ok");
- }
- catch (const ParameterError &e) {
- reply(socket, e.what());
- }
- catch (const exception &e) {
- reply(socket, "Error: Invalid parameter value. ");
- }
- }
- else {
- reply(socket, "Incorrect parameters for command 'set'");
- }
- }
- else if (cmd[0] == "quit") {
- reply(socket, "Goodbye");
- }
- else {
- reply(socket, "Message not understood");
- }
-}
-
-void RemoteControllerTelnet::reply(Socket::TCPSocket& socket, string message)
-{
- stringstream ss;
- ss << message << "\r\n";
- socket.sendall(message.data(), message.size());
-}
-
-
-#if defined(HAVE_ZEROMQ)
-
-RemoteControllerZmq::~RemoteControllerZmq() {
- m_active = false;
- m_fault = false;
-
- if (m_restarter_thread.joinable()) {
- m_restarter_thread.join();
- }
-
- if (m_child_thread.joinable()) {
- m_child_thread.join();
- }
-}
-
-void RemoteControllerZmq::restart()
-{
- if (m_restarter_thread.joinable()) {
- m_restarter_thread.join();
- }
-
- m_restarter_thread = std::thread(&RemoteControllerZmq::restart_thread, this);
-}
-
-// This runs in a separate thread, because
-// it would take too long to be done in the main loop
-// thread.
-void RemoteControllerZmq::restart_thread()
-{
- m_active = false;
-
- if (m_child_thread.joinable()) {
- m_child_thread.join();
- }
-
- m_child_thread = std::thread(&RemoteControllerZmq::process, this);
-}
-
-void RemoteControllerZmq::recv_all(zmq::socket_t& pSocket, std::vector<std::string> &message)
-{
- bool more = true;
- do {
- zmq::message_t msg;
- pSocket.recv(msg);
- std::string incoming((char*)msg.data(), msg.size());
- message.push_back(incoming);
- more = msg.more();
- } while (more);
-}
-
-void RemoteControllerZmq::send_ok_reply(zmq::socket_t &pSocket)
-{
- zmq::message_t msg(2);
- char repCode[2] = {'o', 'k'};
- memcpy ((void*) msg.data(), repCode, 2);
- pSocket.send(msg, zmq::send_flags::none);
-}
-
-void RemoteControllerZmq::send_fail_reply(zmq::socket_t &pSocket, const std::string &error)
-{
- zmq::message_t msg1(4);
- char repCode[4] = {'f', 'a', 'i', 'l'};
- memcpy ((void*) msg1.data(), repCode, 4);
- pSocket.send(msg1, zmq::send_flags::sndmore);
-
- zmq::message_t msg2(error.length());
- memcpy ((void*) msg2.data(), error.c_str(), error.length());
- pSocket.send(msg2, zmq::send_flags::none);
-}
-
-void RemoteControllerZmq::process()
-{
- m_fault = false;
-
- // create zmq reply socket for receiving ctrl parameters
- try {
- zmq::socket_t repSocket(m_zmqContext, ZMQ_REP);
-
- // connect the socket
- int hwm = 100;
- int linger = 0;
- repSocket.setsockopt(ZMQ_RCVHWM, &hwm, sizeof(hwm));
- repSocket.setsockopt(ZMQ_SNDHWM, &hwm, sizeof(hwm));
- repSocket.setsockopt(ZMQ_LINGER, &linger, sizeof(linger));
- repSocket.bind(m_endpoint.c_str());
-
- // create pollitem that polls the ZMQ sockets
- zmq::pollitem_t pollItems[] = { {repSocket, 0, ZMQ_POLLIN, 0} };
- while (m_active) {
- zmq::poll(pollItems, 1, 100);
- std::vector<std::string> msg;
-
- if (pollItems[0].revents & ZMQ_POLLIN) {
- recv_all(repSocket, msg);
-
- std::string command((char*)msg[0].data(), msg[0].size());
-
- if (msg.size() == 1 && command == "ping") {
- send_ok_reply(repSocket);
- }
- else if (msg.size() == 1 && command == "list") {
- size_t cohort_size = rcs.controllables.size();
- for (auto &controllable : rcs.controllables) {
- std::stringstream ss;
- ss << "{ \"name\": \"" << controllable->get_rc_name() << "\"," <<
- " \"params\": { ";
-
- list< vector<string> > params = controllable->get_parameter_descriptions();
- size_t i = 0;
- for (auto &param : params) {
- if (i > 0) {
- ss << ", ";
- }
-
- ss << "\"" << param[0] << "\": " <<
- "\"" << param[1] << "\"";
-
- i++;
- }
-
- ss << " } }";
-
- std::string msg_s = ss.str();
-
- zmq::message_t zmsg(ss.str().size());
- memcpy ((void*) zmsg.data(), msg_s.data(), msg_s.size());
-
- repSocket.send(zmsg, (--cohort_size > 0) ? zmq::send_flags::sndmore : zmq::send_flags::none);
- }
- }
- else if (msg.size() == 2 && command == "show") {
- std::string module((char*) msg[1].data(), msg[1].size());
- try {
- list< vector<string> > r = rcs.get_param_list_values(module);
- size_t r_size = r.size();
- for (auto &param_val : r) {
- std::stringstream ss;
- ss << param_val[0] << ": " << param_val[1] << endl;
- zmq::message_t zmsg(ss.str().size());
- memcpy(zmsg.data(), ss.str().data(), ss.str().size());
-
- repSocket.send(zmsg, (--r_size > 0) ? zmq::send_flags::sndmore : zmq::send_flags::none);
- }
- }
- catch (const ParameterError &err) {
- send_fail_reply(repSocket, err.what());
- }
- }
- else if (msg.size() == 3 && command == "get") {
- std::string module((char*) msg[1].data(), msg[1].size());
- std::string parameter((char*) msg[2].data(), msg[2].size());
-
- try {
- std::string value = rcs.get_param(module, parameter);
- zmq::message_t zmsg(value.size());
- memcpy ((void*) zmsg.data(), value.data(), value.size());
- repSocket.send(zmsg, zmq::send_flags::none);
- }
- catch (const ParameterError &err) {
- send_fail_reply(repSocket, err.what());
- }
- }
- else if (msg.size() == 4 && command == "set") {
- std::string module((char*) msg[1].data(), msg[1].size());
- std::string parameter((char*) msg[2].data(), msg[2].size());
- std::string value((char*) msg[3].data(), msg[3].size());
-
- try {
- rcs.set_param(module, parameter, value);
- send_ok_reply(repSocket);
- }
- catch (const ParameterError &err) {
- send_fail_reply(repSocket, err.what());
- }
- }
- else {
- send_fail_reply(repSocket,
- "Unsupported command. commands: list, show, get, set");
- }
- }
- }
- repSocket.close();
- }
- catch (const zmq::error_t &e) {
- etiLog.level(error) << "ZMQ RC error: " << std::string(e.what());
- }
- catch (const std::exception& e) {
- etiLog.level(error) << "ZMQ RC caught exception: " << e.what();
- m_fault = true;
- }
-}
-
-#endif
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