kopia lustrzana https://github.com/Hamlib/Hamlib
153 wiersze
3.8 KiB
C
153 wiersze
3.8 KiB
C
/*
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* Hamlib Interface - getaddrinfo replacement
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* Copyright (c) 2000-2010 by Stephane Fillod
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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/* Forcing WINVER in MinGW yanks in getaddrinfo(), but locks out Win95/Win98 */
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/* #define WINVER 0x0501 */
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#include <hamlib/config.h>
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#include <stdlib.h>
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#include <stdio.h> /* Standard input/output definitions */
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#include <unistd.h> /* UNIX standard function definitions */
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#include <fcntl.h> /* File control definitions */
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#include <errno.h> /* Error number definitions */
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#include <sys/types.h>
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#include <signal.h>
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#if HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#elif HAVE_WS2TCPIP_H
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#include <ws2tcpip.h>
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# if defined(HAVE_WSPIAPI_H)
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# include <wspiapi.h>
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# endif
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#endif
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/*
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* Replacement for getaddrinfo. Only one addrinfo is returned.
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* Weak checking.
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* Return 0 when success, otherwise -1.
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*/
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#ifndef HAVE_GETADDRINFO
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int getaddrinfo(const char *node, const char *service,
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const struct addrinfo *hints, struct addrinfo **res)
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{
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struct addrinfo *p;
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int ai_family, ai_socktype, ai_protocol, ai_flags;
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/* limitation: service must be non null */
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if (!service)
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{
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return -1;
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}
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if (hints == NULL)
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{
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ai_family = AF_UNSPEC;
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ai_socktype = 0;
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ai_protocol = 0;
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ai_flags = 0;
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}
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else
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{
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ai_family = hints->ai_family;
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ai_socktype = hints->ai_socktype;
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ai_protocol = hints->ai_protocol;
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ai_flags = hints->ai_flags;
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}
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/* limitation: this replacement function only for IPv4 */
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if (ai_family == AF_UNSPEC)
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{
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ai_family = AF_INET;
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}
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if (ai_family != AF_INET)
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{
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return -1;
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}
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p = malloc(sizeof(struct addrinfo));
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if (!p)
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{
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return -1;
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}
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memset(p, 0, sizeof(struct addrinfo));
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p->ai_family = ai_family;
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p->ai_socktype = ai_socktype;
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p->ai_protocol = ai_protocol;
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p->ai_addrlen = sizeof(struct sockaddr_in);
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p->ai_addr = malloc(p->ai_addrlen);
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if (!p->ai_addr)
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{
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free(p);
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return -1;
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}
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memset((char *) p->ai_addr, 0, p->ai_addrlen);
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((struct sockaddr_in *)p->ai_addr)->sin_family = p->ai_family;
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/* limitation: the service must be a port _number_ */
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((struct sockaddr_in *)p->ai_addr)->sin_port = htons(atoi(service));
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/* limitation: the node must be in numbers-and-dots notation */
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if (!node && (ai_flags & AI_PASSIVE))
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{
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((struct sockaddr_in *)p->ai_addr)->sin_addr.s_addr = INADDR_ANY;
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}
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else
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{
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((struct sockaddr_in *)p->ai_addr)->sin_addr.s_addr = inet_addr(node);
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}
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*res = p;
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return 0;
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}
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void freeaddrinfo(struct addrinfo *res)
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{
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free(res->ai_addr);
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free(res);
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}
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#endif /* !HAVE_GETADDRINFO */
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#if !defined(HAVE_DECL_GAI_STRERROR) && !defined(gai_strerror)
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const char *gai_strerror(int errcode)
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{
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return strerror(errcode);
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}
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#endif /* !HAVE_DECL_GAI_STRERROR */
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