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+ new cmdline & config impl

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hagen 2016-01-20 00:00:00 +00:00
parent 6c4977ee78
commit 35200a1ee5
2 changed files with 237 additions and 0 deletions
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137
Config.cpp Normal file
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/*
* Copyright (c) 2013-2016, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
* See full license text in LICENSE file at top of project tree
*/
#include <cstdlib>
#include <iostream>
#include <fstream>
#include <map>
#include <string>
#include <boost/program_options/options_description.hpp>
#include <boost/program_options/parsers.hpp>
#include <boost/program_options/variables_map.hpp>
#include "Config.h"
#include "version.h"
using namespace boost::program_options;
namespace i2p {
namespace config {
options_description m_OptionsDesc;
variables_map m_Options;
void Init() {
options_description general("General options");
general.add_options()
("help,h", "Show this message")
("conf,c", value<std::string>()->default_value(""), "Path to main i2pd config file (default: try ~/.i2pd/i2p.conf or /var/lib/i2pd/i2p.conf)")
("tunconf", value<std::string>()->default_value(""), "Path to config with tunnels list and options (default: try ~/.i2pd/tunnels.cfg or /var/lib/i2pd/tunnels.cfg)")
("pidfile", value<std::string>()->default_value(""), "Write pidfile to given path")
("log", value<bool>()->zero_tokens(), "Write logs to file instead stdout")
("loglevel", value<std::string>()->default_value("info"), "Set the minimal level of log messages (debug, info, warn, error)")
("host", value<std::string>()->default_value(""), "External IP (deprecated)")
("port,p", value<uint16_t>()->default_value(4567), "Port to listen for incoming connections")
("ipv6,6", value<bool>()->zero_tokens(), "Enable communication through ipv6")
("daemon", value<bool>()->zero_tokens(), "Router will go to background after start")
("service", value<bool>()->zero_tokens(), "Router will use system folders like '/var/lib/i2pd'")
("notransit", value<bool>()->zero_tokens(), "Router will not forward transit traffic")
("floodfill", value<bool>()->zero_tokens(), "Router will try to become floodfill")
("bandwidth", value<char>()->default_value('O'), "Bandwidth limiting: L - 32kbps, O - 256Kbps, P - unlimited")
;
options_description httpserver("HTTP Server options");
httpserver.add_options()
("http.enabled", value<bool>()->default_value(true), "Enable or disable webconsole")
("http.address", value<std::string>()->default_value("127.0.0.1"), "Webconsole listen address")
("http.port", value<uint16_t>()->default_value(7070), "Webconsole listen port")
;
options_description httpproxy("HTTP Proxy options");
httpproxy.add_options()
("httpproxy.enabled", value<bool>()->default_value(true), "Enable or disable HTTP Proxy")
("httpproxy.address", value<std::string>()->default_value("127.0.0.1"), "HTTP Proxy listen address")
("httpproxy.port", value<uint16_t>()->default_value(4446), "HTTP Proxy listen port")
("httpproxy.keys", value<std::string>()->default_value("httpproxy-keys.dat"), "HTTP Proxy encryption keys")
;
options_description socksproxy("SOCKS Proxy options");
socksproxy.add_options()
("socksproxy.enabled", value<bool>()->default_value(true), "Enable or disable SOCKS Proxy")
("socksproxy.address", value<std::string>()->default_value("127.0.0.1"), "SOCKS Proxy listen address")
("socksproxy.port", value<uint16_t>()->default_value(4447), "SOCKS Proxy listen port")
("socksproxy.keys", value<std::string>()->default_value("socksproxy-keys.dat"), "SOCKS Proxy encryption keys")
;
options_description sam("SAM bridge options");
sam.add_options()
("sam.enabled", value<bool>()->default_value(false), "Enable or disable SAM Application bridge")
("sam.address", value<std::string>()->default_value("127.0.0.1"), "SAM listen address")
("sam.port", value<uint16_t>()->default_value(7656), "SAM listen port")
;
options_description bob("BOB options");
bob.add_options()
("bob.enabled", value<bool>()->default_value(false), "Enable or disable BOB command channel")
("bob.address", value<std::string>()->default_value("127.0.0.1"), "BOB listen address")
("bob.port", value<uint16_t>()->default_value(2827), "BOB listen port")
;
options_description i2pcontrol("I2PControl options");
i2pcontrol.add_options()
("i2pcontrol.enabled", value<bool>()->default_value(false), "Enable or disable I2P Control Protocol")
("i2pcontrol.address", value<std::string>()->default_value("127.0.0.1"), "I2PCP listen address")
("i2pcontrol.port", value<uint16_t>()->default_value(7650), "I2PCP listen port")
;
m_OptionsDesc
.add(general)
.add(httpserver)
.add(httpproxy)
.add(socksproxy)
.add(sam)
.add(bob)
.add(i2pcontrol)
;
}
void ParseCmdline(int argc, char* argv[]) {
try {
store(parse_command_line(argc, argv, m_OptionsDesc), m_Options);
} catch (boost::program_options::error e) {
std::cerr << "args: " << e.what() << std::endl;
exit(EXIT_FAILURE);
}
if (m_Options.count("help")) {
std::cout << "i2pd version " << I2PD_VERSION << " (" << I2P_VERSION << ")" << std::endl;
std::cout << m_OptionsDesc;
exit(EXIT_SUCCESS);
}
}
void ParseConfig(const std::string& path) {
std::ifstream config(path, std::ios::in);
if (!config.is_open()) {
std::cerr << "missing/unreadable config file: " << path << std::endl;
exit(EXIT_FAILURE);
}
try {
store(boost::program_options::parse_config_file(config, m_OptionsDesc), m_Options);
} catch (boost::program_options::error e) {
std::cerr << e.what() << std::endl;
exit(EXIT_FAILURE);
};
}
void Finalize() {
notify(m_Options);
};
} // namespace config
} // namespace i2p

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#ifndef CONFIG_H__
#define CONFIG_H__
#include <string>
#include <boost/program_options/options_description.hpp>
#include <boost/program_options/variables_map.hpp>
/**
* Functions to parse and store i2pd parameters
*
* General usage flow:
* Init() -- early as possible
* ParseCmdline() -- somewhere close to main()
* ParseConfig() -- after detecting path to config
* Finalize() -- right after all Parse*() functions called
* GetOption() -- may be called after Finalize()
*/
namespace i2p {
namespace config {
extern boost::program_options::variables_map m_Options;
/**
* @brief Initialize list of acceptable parameters
*
* Should be called before any Parse* functions.
*/
void Init();
/**
* @brief Parse cmdline parameters, and show help if requested
* @param argc Cmdline arguments count, should be passed from main().
* @param argv Cmdline parameters array, should be passed from main()
*
* If --help is given in parameters, shows it's list with description
* terminates the program with exitcode 0.
*
* In case of parameter misuse boost throws an exception.
* We internally handle type boost::program_options::unknown_option,
* and then terminate program with exitcode 1.
*
* Other exceptions will be passed to higher level.
*/
void ParseCmdline(int argc, char* argv[]);
/**
* @brief Load and parse given config file
* @param path Path to config file
*
* If error occured when opening file path is points to,
* we show the error message and terminate program.
*
* In case of parameter misuse boost throws an exception.
* We internally handle type boost::program_options::unknown_option,
* and then terminate program with exitcode 1.
*
* Other exceptions will be passed to higher level.
*/
void ParseConfig(const std::string& path);
/**
* @brief Used to combine options from cmdline, config and default values
*/
void Finalize();
/* @brief Accessor to parameters by name
* @param name Name of the requested parameter
* @param value Variable where to store option
* @return this function returns false if parameter not found
*
* @example uint16_t port; GetOption("sam.port", port);
*/
template<typename T>
bool GetOption(const char *name, T& value) {
if (!m_Options.count(name))
return false;
value = m_Options[name].as<T>();
return true;
}
/**
* @brief Set value of given parameter
* @param name Name of settable parameter
* @param value New parameter value
* @return true if value set up successful, false otherwise
*
* @example uint16_t port = 2827; SetOption("bob.port", port);
*/
template<typename T>
bool SetOption(const char *name, const T& value) {
if (!m_Options.count(name))
return false;
m_Options[name] = value;
notify(m_Options);
return true;
}
}
}
#endif // CONFIG_H__