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// Cyphesis Online RPG Server and AI Engine
// Copyright (C) 2010 Alistair Riddoch
//
// 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
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "system.h"
#ifdef _WIN32
#undef DATADIR
#endif // _WIN32
#include <cassert>
extern "C" {
#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#endif // HAVE_SYS_UTSNAME_H
#include <sys/types.h>
}
#ifdef HAVE_WINSOCK_H
#include <winsock2.h>
#endif // HAVE_WINSOCK_H
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif // HAVE_SYS_UN_H
static const bool debug_flag = false;
const std::string get_hostname()
{
#ifndef HAVE_UNAME
char hostname_buf[256];
if (gethostname(hostname_buf, 256) != 0) {
return "UNKNOWN";
}
return std::string(hostname_buf);
#else // HAVE_UNAME
struct utsname host_ident;
if (uname(&host_ident) != 0) {
return "UNKNOWN";
}
return std::string(host_ident.nodename);
#endif // HAVE_UNAME
}
int socket_linger(SOCKET_TYPE fd, int time)
{
struct linger {
int l_onoff;
int l_linger;
} listenLinger = { 1, time };
::setsockopt(fd, SOL_SOCKET, SO_LINGER, (char *)&listenLinger,
sizeof(listenLinger));
return 0;
}
int socket_client_send_credentials(int fd)
{
#ifdef HAVE_SYS_UN_H
#ifndef __APPLE__
#ifndef SO_PEERCRED
// Prove to the server that we are real.
unsigned char buf[1];
buf[0] = '\0';
struct iovec vec[1];
vec[0].iov_base = buf;
vec[0].iov_len = 1;
struct msghdr auth_message;
auth_message.msg_iov = vec;
auth_message.msg_iovlen = 1;
auth_message.msg_name = 0;
auth_message.msg_namelen = 0;
auth_message.msg_controllen = CMSG_SPACE(sizeof(struct ucred));
unsigned char * mcb = new unsigned char[auth_message.msg_controllen];
auth_message.msg_control = mcb;
auth_message.msg_flags = 0;
struct cmsghdr * control = CMSG_FIRSTHDR(&auth_message);
control->cmsg_len = CMSG_LEN(sizeof(struct ucred));
control->cmsg_level = SOL_SOCKET;
control->cmsg_type = SCM_CREDENTIALS;
struct ucred * creds = (struct ucred *)CMSG_DATA(control);
creds->pid = ::getpid();
creds->uid = ::getuid();
creds->gid = ::getgid();
int serr = sendmsg(m_fd, &auth_message, 0);
delete [] mcb;
if (serr < 0) {
perror("sendmsg");
}
// Done proving we are real.
#endif // SO_PEERCRED
return 0;
#endif // __APPLE__
#else // HAVE_SYS_UN_H
return -1;
#endif // HAVE_SYS_UN_H
}
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