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 * $Id: nb_net.c,v 1.4 2001/02/16 02:46:12 bp Exp $
33 * $FreeBSD$
34 */
35#include <sys/param.h>
36#include <sys/socket.h>
37
38#include <net/if.h>
39
40#include <ctype.h>
41#include <netdb.h>
42#include <err.h>
43#include <errno.h>
44#include <stdlib.h>
45#include <string.h>
46#include <stdio.h>
47#include <unistd.h>
48#include <ifaddrs.h>
49
50#include <netsmb/netbios.h>
51#include <netsmb/smb_lib.h>
52#include <netsmb/nb_lib.h>
53
54int
55nb_getlocalname(char *name)
56{
57	char buf[1024], *cp;
58
59	if (gethostname(buf, sizeof(buf)) != 0)
60		return errno;
61	cp = strchr(buf, '.');
62	if (cp)
63		*cp = 0;
64	strcpy(name, buf);
65	return 0;
66}
67
68int
69nb_resolvehost_in(const char *name, struct sockaddr **dest, long smbtcpport)
70{
71	struct hostent* h;
72	struct sockaddr_in *sinp;
73	int len;
74
75	h = gethostbyname(name);
76	if (!h) {
77		warnx("can't get server address `%s': ", name);
78		herror(NULL);
79		return ENETDOWN;
80	}
81	if (h->h_addrtype != AF_INET) {
82		warnx("address for `%s' is not in the AF_INET family", name);
83		return EAFNOSUPPORT;
84	}
85	if (h->h_length != 4) {
86		warnx("address for `%s' has invalid length", name);
87		return EAFNOSUPPORT;
88	}
89	len = sizeof(struct sockaddr_in);
90	sinp = malloc(len);
91	if (sinp == NULL)
92		return ENOMEM;
93	bzero(sinp, len);
94	sinp->sin_len = len;
95	sinp->sin_family = h->h_addrtype;
96	memcpy(&sinp->sin_addr.s_addr, h->h_addr, 4);
97	sinp->sin_port = htons(smbtcpport);
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
146/*ARGSUSED*/
147/*int
148nbns_resolvename(const char *name, struct sockaddr **dest)
149{
150	printf("NetBIOS name resolver is not included in this distribution.\n");
151	printf("Please use '-I' option to specify an IP address of server.\n");
152	return EHOSTUNREACH;
153}*/
154/*
155int
156nb_hostlookup(struct nb_name *np, const char *server, const char *hint,
157	struct sockaddr_nb **dst)
158{
159	struct sockaddr_nb *snb;
160	int error;
161
162	error = nb_sockaddr(NULL, np, &snb);
163	if (error)
164		return error;
165	do {
166		if (hint) {
167			error = nb_resolvehost_in(host, snb, SMB_TCP_PORT);
168			if (error)
169				break;
170		} else {
171			error = nb_resolvename(server);
172		}
173	} while(0);
174	if (!error) {
175		*dst = snb;
176	} else
177		nb_snbfree(snb);
178	return error;
179}
180*/
181