/*
*
* Copyright (C) 2010 Mattias Runge
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <string>
#include <vector>
#include <iostream>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <pwd.h>
#include <boost/lexical_cast.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition.hpp>
#include <boost/thread/locks.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/program_options.hpp>
#include "config.h"
#include "net/Manager.h"
#include "net/Subscriber.h"
#include "net/types.h"
#include "common/common.h"
#include <readline/readline.h>
#include <readline/history.h>
using namespace atom;
bool finish = false;
common::StringList autocomplete_list;
char* buffer = NULL;
boost::condition on_message_condition;
struct termios original_flags;
std::string history_filename;
void Handler(int status);
void CleanUp();
char* AutoCompleteGet(const char* text, int state);
static char** AutoComplete(const char* text, int start, int end);
std::string GetUserHomeDirectory()
{
return std::string(getpwuid(getuid())->pw_dir);
}
class ConsoleClient : public net::Subscriber
{
public:
typedef boost::shared_ptr<ConsoleClient> Pointer;
ConsoleClient(std::string address, unsigned int port)
{
this->client_id_ = net::Manager::Instance()->Connect(net::PROTOCOL_TCP, address, port);
}
virtual ~ConsoleClient()
{
net::Manager::Instance()->Disconnect(this->client_id_);
this->io_service_.stop();
}
std::string GetPrompt()
{
return this->prompt_;
}
void SendResponse(std::string payload)
{
std::string packet = "RESP";
packet += common::PadNumber(payload.length() + 1, 4);
packet += payload;
net::Manager::Instance()->SendTo(this->client_id_, packet);
}
void AutoCompleteRequest(unsigned int arg_index, std::string commandline)
{
std::string payload = common::PadNumber(arg_index, 4);
payload += commandline;
std::string packet = "COMP";
packet += common::PadNumber(payload.length() + 1, 4);
packet += payload;
net::Manager::Instance()->SendTo(this->client_id_, packet);
}
private:
net::ClientId client_id_;
std::string prompt_;
void SlotOnNewStateHandler(net::ClientId client_id, net::ServerId server_id, net::ClientState client_state)
{
if (client_state != net::CLIENT_STATE_CONNECTED)
{
std::cout << "Disconnected from server" << std::endl;
this->client_id_ = 0;
finish = true;
kill(getpid(), SIGTERM);
}
}
void SlotOnNewDataHandler(net::ClientId client_id, net::ServerId server_id, common::Byteset data)
{
std::string s(data.ToCharString());
while (s.length() > 0)
{
std::string command = s.substr(0, 4);
unsigned int payload_length = boost::lexical_cast<unsigned int>(s.substr(4, 4));
if (command == "TEXT")
{
std::cout << s.substr(8, payload_length - 1) << std::flush;
}
else if (command == "PROM")
{
this->prompt_ = s.substr(8, payload_length - 1);
on_message_condition.notify_all();
}
else if (command == "COMP")
{
autocomplete_list.clear();
if (payload_length > 0)
{
std::string payload = s.substr(8, payload_length - 1);
if (payload.length() > 0)
{
boost::algorithm::split(autocomplete_list, payload, boost::is_any_of("\n"), boost::algorithm::token_compress_on);
}
}
on_message_condition.notify_all();
}
else
{
std::cerr << "Unknown data received: " << s << std::endl;
finish = true;
on_message_condition.notify_all();
break;
}
if (8 + payload_length >= s.length())
{
break;
}
s = s.substr(8 + payload_length);
}
}
};
ConsoleClient::Pointer cc;
int main(int argc, char **argv)
{
// Signal handlers
signal(SIGTERM, Handler);
signal(SIGINT, Handler);
signal(SIGQUIT, Handler);
signal(SIGABRT, Handler);
signal(SIGPIPE, Handler);
boost::mutex guard_mutex;
// Setup readline
history_filename = GetUserHomeDirectory() + "/.atomic_history";
read_history(history_filename.data());
rl_attempted_completion_function = AutoComplete;
// Save command line state
tcgetattr(fileno(stdin), &original_flags);
// Parse commandline
boost::program_options::options_description command_line;
boost::program_options::variables_map variable_map;
command_line.add_options()
("help,h", "produce help message")
("server,s", boost::program_options::value<std::string>()->default_value("localhost"), "server address")
("port,p", boost::program_options::value<unsigned int>()->default_value(1202), "server port");
try
{
boost::program_options::store(boost::program_options::command_line_parser(argc, argv).options(command_line).run(), variable_map);
}
catch (boost::program_options::unknown_option e)
{
std::cerr << e.what() << std::endl;
std::cout << command_line << std::endl;
CleanUp();
return EXIT_FAILURE;
}
catch (boost::program_options::invalid_syntax e)
{
std::cerr << e.what() << std::endl;
std::cout << command_line << std::endl;
CleanUp();
return EXIT_FAILURE;
}
if (variable_map.count("help") != 0)
{
std::cout << command_line << std::endl;
CleanUp();
return EXIT_SUCCESS;
}
std::cout << "Atom Interactive Console, version " + std::string(VERSION) + " starting..." << std::endl;
std::cout << "Written by Mattias Runge 2010." << std::endl;
std::cout << "Released under GPL version 2." << std::endl;
net::Manager::Create();
std::cout << "Connecting to " << variable_map["server"].as<std::string>().data() << ":" << variable_map["port"].as<unsigned int>() << "..." << std::endl;
try
{
cc = ConsoleClient::Pointer(new ConsoleClient(variable_map["server"].as<std::string>(), variable_map["port"].as<unsigned int>()));
}
catch (std::runtime_error& e)
{
std::cout << "error!" << std::endl;
std::cerr << e.what() << std::endl;
CleanUp();
return EXIT_FAILURE;
}
while (true)
{
boost::mutex::scoped_lock guard(guard_mutex);
on_message_condition.wait(guard);
if (finish)
{
break;
}
while ((buffer = readline(cc->GetPrompt().data())) != NULL)
{
if (strlen(buffer) == 0)
{
continue;
}
break;
}
cc->SendResponse(buffer);
add_history(buffer);
}
CleanUp();
return EXIT_SUCCESS;
}
static char** AutoComplete(const char* text, int start, int end)
{
unsigned int count = 0;
boost::mutex guard_mutex;
for (unsigned int n = 0; n < start; n++)
{
if (rl_line_buffer[n] == ' ')
{
count++;
}
}
cc->AutoCompleteRequest(count, rl_line_buffer);
boost::mutex::scoped_lock guard(guard_mutex);
on_message_condition.wait(guard);
/*if (autocomplete_list.size() == 0)
{
return NULL;
}*/
return rl_completion_matches(text, &AutoCompleteGet);
}
char* AutoCompleteGet(const char* text, int state)
{
static int index = 0;
int length = strlen(text);
std::string name;
if (!state) // First run
{
index = 0;
}
while (autocomplete_list.size() > index)
{
name = autocomplete_list[index];
index++;
if (strncmp(name.data(), text, length) == 0)
{
char *result = (char*)malloc(name.size() + 1);
strcpy(result, name.data());
return result;
}
}
return NULL;
}
void CleanUp()
{
std::cout << "Cleaning up..." << std::endl;
write_history(history_filename.data());
cc.reset();
net::Manager::Delete();
if (buffer != NULL)
{
free(buffer);
}
std::cout << "Thank you for using Atom. Goodbye!" << std::endl;
tcsetattr(fileno(stdin), TCSANOW, &original_flags); // Restore
}
void Handler(int status)
{
std::string signal_name = "Unknown";
switch (status)
{
case SIGTERM:
{
signal_name = "Terminate";
break;
}
case SIGINT:
{
signal_name = "Interupt";
break;
}
case SIGQUIT:
{
signal_name = "Quit";
break;
}
case SIGABRT:
{
signal_name = "Abort";
break;
}
case SIGIO:
{
signal_name = "I/O";
break;
}
case SIGPIPE:
{
signal_name = "Pipe";
break;
}
}
if (status != SIGPIPE)
{
CleanUp();
exit(0);
}
}