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
54 int
nb_getlocalname(char * name)55 nb_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
68 int
nb_resolvehost_in(const char * name,struct sockaddr ** dest,long smbtcpport)69 nb_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
102 int
nb_enum_if(struct nb_ifdesc ** iflist,int maxif)103 nb_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
148 nbns_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 /*
155 int
156 nb_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