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/*
* Copyright (C) 2002 Dominic Sacr <bugcreator@gmx.de>.
*
* 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.
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <iostream>
#include <sys/time.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include "ControlSocket.h"
#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 108
#endif
using std::cerr;
using std::string;
using std::endl;
// ============================================================================
// ControlSocket
// ============================================================================
ControlSocket & ControlSocket::operator<< (unsigned int v)
{
send (m_sd, &v, sizeof(unsigned int), 0);
return *this;
}
ControlSocket & ControlSocket::operator<< (bool v)
{
send (m_sd, &v, sizeof(bool), 0);
return *this;
}
ControlSocket & ControlSocket::operator<< (const string & v)
{
size_t s = v.size() + 1;
send (m_sd, &s, sizeof(size_t), 0);
send (m_sd, v.c_str(), s, 0);
return *this;
}
ControlSocket & ControlSocket::operator>> (unsigned int & v)
{
recv (m_sd, &v, sizeof(unsigned int), 0);
return *this;
}
ControlSocket & ControlSocket::operator>> (bool & v)
{
recv (m_sd, &v, sizeof(bool), 0);
return *this;
}
ControlSocket & ControlSocket::operator>> (string & v)
{
size_t s;
recv (m_sd, &s, sizeof(size_t), 0);
char *p = new char[s];
if (p != NULL) {
recv (m_sd, p, s, 0);
v = string (p);
delete [] p;
}
return *this;
}
ControlSocket::ReadStatus ControlSocket::readStatus ()
{
char foo;
fcntl (m_sd, F_SETFL, O_NONBLOCK);
int r = recv (m_sd, &foo, sizeof(foo), MSG_PEEK);
fcntl (m_sd, F_SETFL, 0);
if (r > 0) return READ;
else if (r == 0) return CLOSED;
return WAITING;
}
// ============================================================================
// ControlSocketServer
// ============================================================================
bool ControlSocketServer::init (const string & socket_path)
{
m_saddr.sun_family = AF_UNIX;
snprintf (m_saddr.sun_path, UNIX_PATH_MAX, "%s/ctrlsocket", socket_path.c_str());
// try to create the directory where the socket should be created
if ((mkdir (socket_path.c_str(), 0700) == -1) && errno != EEXIST) {
cerr << "Failed to create directory `" << socket_path.c_str() << "' (Error: " << strerror(errno) << ")" << endl;
return false;
}
// try to delete the socket if it already exists
if ((unlink (m_saddr.sun_path) == -1) && errno != ENOENT) {
cerr << "Failed to unlink `" << m_saddr.sun_path << "' (Error: " << strerror(errno) << ")" << endl;
return false;
}
// create the socket
if ((m_sd = socket (AF_UNIX, SOCK_STREAM, 0)) == -1) {
cerr << "Failed to open socket" << endl;
return false;
}
if (bind (m_sd, (struct sockaddr *) &m_saddr, sizeof(m_saddr)) == -1) {
cerr << "Failed to assign `" << m_saddr.sun_path << "' to a socket (Error: " << strerror(errno) << ")" << endl;
close (m_sd);
return false;
}
chmod (m_saddr.sun_path, 0700);
listen (m_sd, 5);
return true;
}
void ControlSocketServer::quit ()
{
close (m_sd);
unlink (m_saddr.sun_path);
}
int ControlSocketServer::getConnection ()
{
fd_set set;
timeval tv;
FD_ZERO (&set);
FD_SET (m_sd, &set);
tv.tv_sec = 0;
tv.tv_usec = 0;
// see whether someone connected to our socket
if (select (m_sd + 1, &set, NULL, NULL, &tv) > 0) {
int sd = accept (m_sd, (sockaddr *) NULL, NULL);
return sd;
}
return -1;
}
void ControlSocketServer::closeConnection (int sd)
{
close (sd);
}
// ============================================================================
// ControlSocketClient
// ============================================================================
bool ControlSocketClient::init (const string & socket_path, bool quiet)
{
sockaddr_un saddr;
saddr.sun_family = AF_UNIX;
snprintf (saddr.sun_path, UNIX_PATH_MAX, "%s/ctrlsocket", socket_path.c_str());
if ((m_sd = socket (AF_UNIX, SOCK_STREAM, 0)) == -1) {
if (!quiet) cerr << "Failed to open socket" << endl;
return false;
}
if (connect (m_sd, (sockaddr *) &saddr, sizeof (saddr)) == -1) {
if (!quiet) cerr << "Couldn't connect to socket `" << saddr.sun_path << "'" << endl;
close (m_sd);
return false;
}
return true;
}
void ControlSocketClient::quit ()
{
close (m_sd);
}
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