source: rtems-libbsd/freebsd/sbin/ifconfig/af_inet.c @ 8ff186f

4.1155-freebsd-126-freebsd-12freebsd-9.3
Last change on this file since 8ff186f was 8ff186f, checked in by Sebastian Huber <sebastian.huber@…>, on 10/18/13 at 14:47:43

IFCONFIG(8): Fix isdigit() and isprint() usage

  • Property mode set to 100644
File size: 5.7 KB
Line 
1/*
2 * Copyright (c) 1983, 1993
3 *      The Regents of the University of California.  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 * 4. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef lint
31static const char rcsid[] =
32  "$FreeBSD$";
33#endif /* not lint */
34
35#include <rtems/bsd/sys/types.h>
36#include <sys/ioctl.h>
37#include <sys/socket.h>
38#include <net/if.h>
39
40#include <ctype.h>
41#include <err.h>
42#include <stdio.h>
43#include <stdlib.h>
44#include <string.h>
45#include <unistd.h>
46#include <ifaddrs.h>
47
48#include <netinet/in.h>
49#include <net/if_var.h>         /* for struct ifaddr */
50#include <netinet/in_var.h>
51#include <arpa/inet.h>
52#include <netdb.h>
53
54#include "ifconfig.h"
55
56static struct in_aliasreq in_addreq;
57static struct ifreq in_ridreq;
58
59static void
60in_status(int s __unused, const struct ifaddrs *ifa)
61{
62        struct sockaddr_in *sin, null_sin;
63       
64        memset(&null_sin, 0, sizeof(null_sin));
65
66        sin = (struct sockaddr_in *)ifa->ifa_addr;
67        if (sin == NULL)
68                return;
69
70        printf("\tinet %s ", inet_ntoa(sin->sin_addr));
71
72        if (ifa->ifa_flags & IFF_POINTOPOINT) {
73                sin = (struct sockaddr_in *)ifa->ifa_dstaddr;
74                if (sin == NULL)
75                        sin = &null_sin;
76                printf("--> %s ", inet_ntoa(sin->sin_addr));
77        }
78
79        sin = (struct sockaddr_in *)ifa->ifa_netmask;
80        if (sin == NULL)
81                sin = &null_sin;
82        printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
83
84        if (ifa->ifa_flags & IFF_BROADCAST) {
85                sin = (struct sockaddr_in *)ifa->ifa_broadaddr;
86                if (sin != NULL && sin->sin_addr.s_addr != 0)
87                        printf("broadcast %s", inet_ntoa(sin->sin_addr));
88        }
89        putchar('\n');
90}
91
92#define SIN(x) ((struct sockaddr_in *) &(x))
93static struct sockaddr_in *sintab[] = {
94        SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
95        SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
96};
97
98static void
99in_getaddr(const char *s, int which)
100{
101#define MIN(a,b)        ((a)<(b)?(a):(b))
102        struct sockaddr_in *sin = sintab[which];
103        struct hostent *hp;
104        struct netent *np;
105
106        sin->sin_len = sizeof(*sin);
107        if (which != MASK)
108                sin->sin_family = AF_INET;
109
110        if (which == ADDR) {
111                char *p = NULL;
112
113                if((p = strrchr(s, '/')) != NULL) {
114                        const char *errstr;
115                        /* address is `name/masklen' */
116                        int masklen;
117                        struct sockaddr_in *min = sintab[MASK];
118                        *p = '\0';
119                        if (!isdigit((unsigned char)*(p + 1)))
120                                errstr = "invalid";
121                        else
122                                masklen = (int)strtonum(p + 1, 0, 32, &errstr);
123                        if (errstr != NULL) {
124                                *p = '/';
125                                errx(1, "%s: bad value (width %s)", s, errstr);
126                        }
127                        min->sin_len = sizeof(*min);
128                        min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
129                                              0xffffffff);
130                }
131        }
132
133        if (inet_aton(s, &sin->sin_addr))
134                return;
135        if ((hp = gethostbyname(s)) != 0)
136                bcopy(hp->h_addr, (char *)&sin->sin_addr,
137                    MIN((size_t)hp->h_length, sizeof(sin->sin_addr)));
138        else if ((np = getnetbyname(s)) != 0)
139                sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
140        else
141                errx(1, "%s: bad value", s);
142#undef MIN
143}
144
145static void
146in_status_tunnel(int s)
147{
148        char src[NI_MAXHOST];
149        char dst[NI_MAXHOST];
150        struct ifreq ifr;
151        const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
152
153        memset(&ifr, 0, sizeof(ifr));
154        strncpy(ifr.ifr_name, name, IFNAMSIZ);
155
156        if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
157                return;
158        if (sa->sa_family != AF_INET)
159                return;
160        if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
161                src[0] = '\0';
162
163        if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
164                return;
165        if (sa->sa_family != AF_INET)
166                return;
167        if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
168                dst[0] = '\0';
169
170        printf("\ttunnel inet %s --> %s\n", src, dst);
171}
172
173static void
174in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
175{
176        struct in_aliasreq addreq;
177
178        memset(&addreq, 0, sizeof(addreq));
179        strncpy(addreq.ifra_name, name, IFNAMSIZ);
180        memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
181        memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
182
183        if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
184                warn("SIOCSIFPHYADDR");
185}
186
187static struct afswtch af_inet = {
188        .af_name        = "inet",
189        .af_af          = AF_INET,
190        .af_status      = in_status,
191        .af_getaddr     = in_getaddr,
192        .af_status_tunnel = in_status_tunnel,
193        .af_settunnel   = in_set_tunnel,
194        .af_difaddr     = SIOCDIFADDR,
195        .af_aifaddr     = SIOCAIFADDR,
196        .af_ridreq      = &in_ridreq,
197        .af_addreq      = &in_addreq,
198};
199
200static __constructor void
201inet_ctor(void)
202{
203        af_register(&af_inet);
204}
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