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 1.8 2004/03/19 01:49:47 lindak Exp $
33 */
34
35 #include <sys/param.h>
36 #include <sys/socket.h>
37 #include <sys/ioctl.h>
38 #include <sys/sockio.h>
39 #include <net/if.h>
40 #include <ctype.h>
41 #include <errno.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <strings.h>
45 #include <stdio.h>
46 #include <unistd.h>
47 #include <netdb.h>
48 #include <nss_dbdefs.h>
49
50 #include <err.h>
51
52 #include <netsmb/netbios.h>
53 #include <netsmb/smb_lib.h>
54 #include <netsmb/nb_lib.h>
55 #include "private.h"
56
57 /*
58 * General networking stuff, in spite of the names
59 * that imply they're specific to NetBIOS.
60 */
61
62 int
nb_resolvehost_in(const char * name,struct in_addr * ia)63 nb_resolvehost_in(const char *name, struct in_addr *ia)
64 {
65 char he_buf[NSS_BUFLEN_HOSTS];
66 struct hostent he, *h;
67 int err;
68
69 h = gethostbyname_r(name, &he, he_buf, sizeof (he_buf), &err);
70 if (h == NULL) {
71 #ifdef DEBUG
72 warnx("can't get server address `%s': ", name);
73 #endif
74 return (ENETDOWN);
75 }
76 if (h->h_addrtype != AF_INET) {
77 #ifdef DEBUG
78 warnx("address for `%s' is not in the AF_INET family", name);
79 #endif
80 return (EAFNOSUPPORT);
81 }
82 if (h->h_length != 4) {
83 #ifdef DEBUG
84 warnx("address for `%s' has invalid length", name);
85 #endif
86 return (EAFNOSUPPORT);
87 }
88
89 memcpy(ia, h->h_addr, sizeof (*ia));
90 return (0);
91 }
92