mirror of
https://github.com/binary-kitchen/doorlockd
synced 2024-09-05 14:27:21 +02:00
195 lines
4.8 KiB
C++
195 lines
4.8 KiB
C++
#include <iostream>
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#include <string>
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#include <cstdlib>
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#include <memory>
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#include <utility>
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#include <csignal>
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#include <boost/program_options.hpp>
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#include <boost/asio.hpp>
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#include "daemon.h"
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#include "config.h"
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#include "logic.h"
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using namespace std;
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namespace po = boost::program_options;
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using boost::asio::ip::tcp;
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const static Logger &l = Logger::get();
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static unique_ptr<Logic> logic = nullptr;
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boost::asio::io_service io_service;
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void signal_handler(int signum)
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{
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(void)signum;
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io_service.stop();
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logic.reset();
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}
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/*
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* Session class handles asynchronosly handles one incoming TCP session
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*/
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class session
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: public std::enable_shared_from_this<session>
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{
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public:
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session(tcp::socket socket)
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: _socket(std::move(socket))
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{
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}
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void start()
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{
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auto self(shared_from_this());
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_socket.async_read_some(boost::asio::buffer(_data, _maxLen),
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[this, self](boost::system::error_code ec, std::size_t length)
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{
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if (!ec)
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{
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const string payload(_data, length);
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const auto rc = logic->parseRequest(payload);
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boost::asio::write(_socket, boost::asio::buffer(to_string(rc) + "\n"));
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}
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});
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}
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private:
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tcp::socket _socket;
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static constexpr int _maxLen = { 2048 };
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char _data[_maxLen];
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};
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/*
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* The TCP server
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*/
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class server
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{
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public:
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server(boost::asio::io_service& io_service, short port)
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: _acceptor(io_service, tcp::endpoint(boost::asio::ip::address::from_string("127.0.0.1"), port)),
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_socket(io_service)
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{
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do_accept();
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}
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private:
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void do_accept()
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{
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_acceptor.async_accept(_socket,
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[this](boost::system::error_code ec)
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{
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if (!ec)
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{
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std::make_shared<session>(std::move(_socket))->start();
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}
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do_accept();
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});
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}
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tcp::acceptor _acceptor;
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tcp::socket _socket;
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};
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int main(int argc, char** argv)
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{
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int retval = -1;
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short port;
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std::chrono::seconds tokenTimeout;
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string ldapUri;
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string bindDN;
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string lockPagePrefix;
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string logfile;
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string pidFile;
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bool foreground = false;
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l(LogLevel::notice, "Starting doorlockd");
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// Load SPI and I2C modules
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system("/usr/bin/gpio load spi");
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system("/usr/bin/gpio load i2c");
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try {
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unsigned int timeout;
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po::options_description desc("usage: doorlockd");
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desc.add_options()
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("help,h", "print help")
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("tokentimeout,t", po::value<unsigned int>(&timeout)->default_value(DEFAULT_TOKEN_TIMEOUT), "Token timeout in seconds")
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("port,p", po::value<short>(&port)->default_value(DEFAULT_PORT), "Port")
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("ldap,s", po::value<string>(&ldapUri)->default_value(DEFAULT_LDAP_URI), "Ldap Server")
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("bidndn,b", po::value<string>(&bindDN)->default_value(DEFAULT_BINDDN), "Bind DN, %s means username")
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("web,w", po::value<string>(&lockPagePrefix)->default_value(DEFAULT_WEB_PREFIX), "Prefix of the webpage")
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("foreground,f", po::bool_switch(&foreground)->default_value(false), "Run in foreground")
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("logfile,l", po::value<string>(&logfile)->default_value(DEFAULT_LOG_FILE), "Log file")
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("pid,z", po::value<string>(&pidFile)->default_value(DEFAULT_PID_FILE), "PID file");
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po::variables_map vm;
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po::store(po::command_line_parser(argc, argv).options(desc).run(), vm);
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if (vm.count("help"))
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{
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std::cout << desc << std::endl;
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retval = 0;
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goto out;
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}
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po::notify(vm);
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tokenTimeout = std::chrono::seconds(timeout>3 ? timeout-3 : timeout); // Epaper refresh takes ~3 seconds
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}
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catch(const std::exception &e)
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{
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std::cerr << "Error: " << e.what() << "\n";
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goto out;
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}
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daemonize(!foreground,
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"/",
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"/dev/null",
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logfile,
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logfile,
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pidFile);
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signal(SIGINT, signal_handler);
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signal(SIGKILL, signal_handler);
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signal(SIGTERM, signal_handler);
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signal(SIGUSR1, signal_handler);
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signal(SIGUSR2, signal_handler);
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logic = unique_ptr<Logic>(new Logic(tokenTimeout,
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ldapUri,
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bindDN,
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lockPagePrefix));
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try {
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server s(io_service, port);
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io_service.run();
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}
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catch (const char* const &ex) {
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ostringstream str;
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str << "FATAL ERROR: " << ex;
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l(str, LogLevel::error);
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retval = -1;
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goto out;
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}
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retval = 0;
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out:
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Door::get().lock();
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l(LogLevel::notice, "Doorlockd stopped");
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return retval;
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}
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