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/*
$NiH: sockets.c,v 1.25 2002/09/16 12:42:43 dillo Exp $
sockets.c -- auxiliary socket functions
Copyright (C) 1996-2002 Dieter Baron
This file is part of cftp, a fullscreen ftp client
The author can be contacted at <dillo@giga.or.at>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <unistd.h>
#include "config.h"
#include "display.h"
#include "sockets.h"
int
sopen(char *host, char *service, int family)
{
struct addrinfo hints, *res0, *res;
int s, err;
char *cause;
memset(&hints, 0, sizeof(hints));
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
if ((err=getaddrinfo(host, service, &hints, &res0)) != 0) {
disp_status(DISP_ERROR, "cannot get host/service %s/%s: %s\n",
host, service, gai_strerror(err));
return -1;
}
s = -1;
for (res = res0; res; res = res->ai_next) {
if ((s=socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) < 0) {
cause = "create socket";
continue;
}
if (connect(s, res->ai_addr, res->ai_addrlen) < 0) {
cause = "connect";
close(s);
s = -1;
continue;
}
/* okay we got one */
break;
}
if (s < 0)
disp_status(DISP_ERROR, "cannot %s: %s", cause, strerror(errno));
freeaddrinfo(res0);
return s;
}
int
spassive(int family, struct sockaddr *addr, int *lenp)
{
struct addrinfo hints, *res, *res0;
int s;
char *cause;
memset(&hints, 0, sizeof(hints));
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
if (getaddrinfo(NULL, "0", &hints, &res0) != 0) {
disp_status(DISP_ERROR, "cannot get address info: %s\n",
gai_strerror(errno));
return -1;
}
for (res = res0; res; res = res->ai_next) {
if ((s=socket(res->ai_family, res->ai_socktype,
res->ai_protocol)) < 0) {
cause = "create socket";
continue;
}
if (bind(s, res->ai_addr, res->ai_addrlen) < 0) {
cause = "bind";
close(s);
continue;
}
if (getsockname(s, addr, lenp) == -1) {
cause = "get socket name";
close(s);
continue;
}
if (listen(s, 1) < 0) {
cause = "listen";
close(s);
continue;
}
freeaddrinfo(res0);
return s;
}
freeaddrinfo(res0);
disp_status(DISP_ERROR, "cannot %s: %s", cause, strerror(errno));
return -1;
}
const char *
sockaddr_ntop(struct sockaddr *sa)
{
#ifdef HAVE_GETNAMEINFO
static char addrbuf[NI_MAXHOST];
int len;
#ifdef HAVE_STRUCT_MEMBER_SOCKADDR_SA_LEN
len = sa->sa_len;
#else
if (sa->sa_family == AF_INET)
len = sizeof(struct sockaddr_in);
else
len = sizeof(struct sockaddr_in6);
#endif
if (getnameinfo(sa, len, addrbuf, sizeof(addrbuf),
NULL, 0, NI_NUMERICHOST) == 0)
return addrbuf;
else
return NULL;
#else /* !HAVE_GETNAMEINFO */
struct sockaddr_in *si;
if (sa->sa_family != AF_INET)
return NULL;
si = (struct sockaddr_in *)sa;
return inet_ntoa(si->sin_addr);
#endif
}
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