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/*
* Hamlib Interface - getaddrinfo replacement
* 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
*
*/
/* Forcing WINVER in MinGW yanks in getaddrinfo(), but locks out Win95/Win98 */
/* #define WINVER 0x0501 */
#include <hamlib/config.h>
#include <stdlib.h>
#include <stdio.h> /* Standard input/output definitions */
#include <unistd.h> /* UNIX standard function definitions */
#include <fcntl.h> /* File control definitions */
#include <errno.h> /* Error number definitions */
#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>
# if defined(HAVE_WSPIAPI_H)
# include <wspiapi.h>
# endif
#endif
/*
* Replacement for getaddrinfo. Only one addrinfo is returned.
* Weak checking.
* Return 0 when success, otherwise -1.
*/
#ifndef HAVE_GETADDRINFO
int getaddrinfo(const char *node, const char *service,
const struct addrinfo *hints, struct addrinfo **res)
{
struct addrinfo *p;
int ai_family, ai_socktype, ai_protocol, ai_flags;
/* limitation: service must be non null */
if (!service)
{
return -1;
}
if (hints == NULL)
{
ai_family = AF_UNSPEC;
ai_socktype = 0;
ai_protocol = 0;
ai_flags = 0;
}
else
{
ai_family = hints->ai_family;
ai_socktype = hints->ai_socktype;
ai_protocol = hints->ai_protocol;
ai_flags = hints->ai_flags;
}
/* limitation: this replacement function only for IPv4 */
if (ai_family == AF_UNSPEC)
{
ai_family = AF_INET;
}
if (ai_family != AF_INET)
{
return -1;
}
p = calloc(1, sizeof(struct addrinfo));
if (!p)
{
return -1;
}
memset(p, 0, sizeof(struct addrinfo));
p->ai_family = ai_family;
p->ai_socktype = ai_socktype;
p->ai_protocol = ai_protocol;
p->ai_addrlen = sizeof(struct sockaddr_in);
p->ai_addr = calloc(1, p->ai_addrlen);
if (!p->ai_addr)
{
free(p);
return -1;
}
memset((char *) p->ai_addr, 0, p->ai_addrlen);
((struct sockaddr_in *)p->ai_addr)->sin_family = p->ai_family;
/* limitation: the service must be a port _number_ */
((struct sockaddr_in *)p->ai_addr)->sin_port = htons(atoi(service));
/* limitation: the node must be in numbers-and-dots notation */
if (!node && (ai_flags & AI_PASSIVE))
{
((struct sockaddr_in *)p->ai_addr)->sin_addr.s_addr = INADDR_ANY;
}
else
{
((struct sockaddr_in *)p->ai_addr)->sin_addr.s_addr = inet_addr(node);
}
*res = p;
return 0;
}
void freeaddrinfo(struct addrinfo *res)
{
free(res->ai_addr);
free(res);
}
#endif /* !HAVE_GETADDRINFO */
#if !defined(HAVE_DECL_GAI_STRERROR) && !defined(gai_strerror)
const char *gai_strerror(int errcode)
{
return strerror(errcode);
}
#endif /* !HAVE_DECL_GAI_STRERROR */
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