1/*
2 * Copyright (c) 2000, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *    This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * from: Id: nb_net.c,v 1.4 2001/02/16 02:46:12 bp Exp
33 */
34
35#include <sys/cdefs.h>
36__RCSID("$NetBSD: nb_net.c,v 1.4 2003/04/04 08:05:34 jdolecek Exp $");
37
38#include <sys/param.h>
39#include <sys/socket.h>
40
41#include <net/if.h>
42
43#include <ctype.h>
44#include <netdb.h>
45#include <err.h>
46#include <errno.h>
47#include <stdlib.h>
48#include <string.h>
49#include <stdio.h>
50#include <unistd.h>
51#include <ifaddrs.h>
52
53#include <netsmb/netbios.h>
54#include <netsmb/smb_lib.h>
55#include <netsmb/nb_lib.h>
56
57int
58nb_getlocalname(char *name)
59{
60	char buf[1024], *cp;
61
62	if (gethostname(buf, sizeof(buf)) != 0)
63		return errno;
64	cp = strchr(buf, '.');
65	if (cp)
66		*cp = 0;
67	strcpy(name, buf);
68	return 0;
69}
70
71int
72nb_resolvehost_in(const char *name, struct sockaddr **dest)
73{
74	struct addrinfo *res, hints;
75	struct sockaddr_in *sinp;
76	int error;
77	char port[6];
78
79	memset(&hints, 0, sizeof(hints));
80	hints.ai_family = PF_INET;
81	hints.ai_socktype = SOCK_STREAM;
82	snprintf(port, sizeof(port), "%d", SMB_TCP_PORT);
83
84	error = getaddrinfo(name, port, &hints, &res);
85	if (error) {
86		warnx("server address `%s': %s", name, gai_strerror(error));
87		return ENETDOWN;
88	}
89
90	/* Use first address as the address to connect to */
91	sinp = malloc(res[0].ai_addrlen);
92	if (sinp == NULL)
93		return ENOMEM;
94	memcpy(sinp, res[0].ai_addr, res[0].ai_addrlen);
95
96	freeaddrinfo(res);
97
98	*dest = (struct sockaddr*)sinp;
99	return 0;
100}
101
102int
103nb_enum_if(struct nb_ifdesc **iflist, int maxif)
104{
105	struct nb_ifdesc *ifd;
106	struct ifaddrs *ifp, *p;
107	int i;
108
109	if (getifaddrs(&ifp) < 0)
110		return errno;
111
112	*iflist = NULL;
113	i = 0;
114	for (p = ifp; p; p = p->ifa_next) {
115
116		if (i >= maxif)
117			break;
118
119		if ((p->ifa_addr->sa_family != AF_INET) ||
120		    ((p->ifa_flags & (IFF_UP|IFF_BROADCAST))
121		     != (IFF_UP|IFF_BROADCAST)))
122			continue;
123		if (strlen(p->ifa_name) >= sizeof(ifd->id_name))
124			continue;
125
126		ifd = malloc(sizeof(struct nb_ifdesc));
127		if (ifd == NULL) {
128			freeifaddrs(ifp);
129			/* XXX should free stuff already in *iflist */
130			return ENOMEM;
131		}
132		bzero(ifd, sizeof(struct nb_ifdesc));
133		strcpy(ifd->id_name, p->ifa_name);
134		ifd->id_flags = p->ifa_flags;
135		ifd->id_addr = ((struct sockaddr_in *)p->ifa_addr)->sin_addr;
136		ifd->id_mask = ((struct sockaddr_in *)p->ifa_netmask)->sin_addr;
137		ifd->id_next = *iflist;
138		*iflist = ifd;
139		i++;
140	}
141
142	freeifaddrs(ifp);
143	return 0;
144}
145