kopia lustrzana https://github.com/Hamlib/Hamlib
166 wiersze
3.9 KiB
C
166 wiersze
3.9 KiB
C
/*
|
|
* Hamlib Interface - network communication low-level support
|
|
* Copyright (c) 2000-2010 by Stephane Fillod
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* \addtogroup rig_internal
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* \brief Network port IO
|
|
* \file network.c
|
|
*/
|
|
|
|
/* Forcing WINVER in MinGW yanks in getaddrinfo(), but locks out Win95/Win98 */
|
|
/* #define WINVER 0x0501 */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h> /* Standard input/output definitions */
|
|
#include <string.h> /* String function definitions */
|
|
#include <unistd.h> /* UNIX standard function definitions */
|
|
#include <fcntl.h> /* File control definitions */
|
|
#include <errno.h> /* Error number definitions */
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <signal.h>
|
|
|
|
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#if HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#elif HAVE_WS2TCPIP_H
|
|
#include <ws2tcpip.h>
|
|
#endif
|
|
|
|
#include "hamlib/rig.h"
|
|
#include "network.h"
|
|
#include "misc.h"
|
|
|
|
|
|
#ifdef __MINGW32__
|
|
static int wsstarted;
|
|
#endif
|
|
|
|
/**
|
|
* \brief Open network port using rig.state data
|
|
*
|
|
* Open Open network port using rig.state data.
|
|
* NB: The signal PIPE will be ignored for the whole application.
|
|
*
|
|
* \param rp Port data structure (must spec port id eg hostname:port)
|
|
* \param default_port Default network socket port
|
|
* \return RIG_OK or < 0 if error
|
|
*/
|
|
int network_open(hamlib_port_t *rp, int default_port)
|
|
{
|
|
int fd; /* File descriptor for the port */
|
|
int status;
|
|
struct addrinfo hints, *res;
|
|
char *portstr;
|
|
char hostname[FILPATHLEN] = "127.0.0.1";
|
|
char defaultportstr[8];
|
|
|
|
#ifdef __MINGW32__
|
|
WSADATA wsadata;
|
|
if (!(wsstarted++) && WSAStartup(MAKEWORD(1,1), &wsadata) == SOCKET_ERROR) {
|
|
rig_debug(RIG_DEBUG_ERR, "Error creating socket\n");
|
|
return -RIG_EIO;
|
|
}
|
|
#endif
|
|
|
|
if (!rp)
|
|
return -RIG_EINVAL;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
if (rp->pathname[0] == ':') {
|
|
portstr = rp->pathname+1;
|
|
} else {
|
|
strncpy(hostname, rp->pathname, FILPATHLEN-1);
|
|
|
|
/* search last ':', because IPv6 may have some */
|
|
portstr = strrchr(hostname, ':');
|
|
if (portstr) {
|
|
*portstr++ = '\0';
|
|
} else {
|
|
sprintf(defaultportstr, "%d", default_port);
|
|
portstr = defaultportstr;
|
|
}
|
|
}
|
|
|
|
status=getaddrinfo(hostname, portstr, &hints, &res);
|
|
if (status != 0) {
|
|
rig_debug(RIG_DEBUG_ERR, "Cannot get host \"%s\": %s\n",
|
|
rp->pathname, gai_strerror(errno));
|
|
return -RIG_ECONF;
|
|
}
|
|
|
|
/* we don't want a signal when connection get broken */
|
|
#ifdef SIGPIPE
|
|
signal(SIGPIPE, SIG_IGN);
|
|
#endif
|
|
|
|
fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
|
|
if (fd < 0)
|
|
return -RIG_EIO;
|
|
|
|
status = connect(fd, res->ai_addr, res->ai_addrlen);
|
|
freeaddrinfo(res);
|
|
if (status < 0) {
|
|
rig_debug(RIG_DEBUG_ERR, "Cannot open NET device \"%s\": %s\n",
|
|
rp->pathname, strerror(errno));
|
|
close(fd);
|
|
return -RIG_EIO;
|
|
}
|
|
|
|
rp->fd = fd;
|
|
|
|
return RIG_OK;
|
|
}
|
|
|
|
int network_close(hamlib_port_t *rp)
|
|
{
|
|
int ret;
|
|
#ifdef __MINGW32__
|
|
ret = closesocket(rp->fd);
|
|
if (--wsstarted)
|
|
WSACleanup();
|
|
#else
|
|
ret = close(rp->fd);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
/** @} */
|