ip6conf.tproj/ip6tool.c

   1 /*      Copyright (c) 2002 Apple Computer, Inc. All rights reserved.
   2 *
   3 * @APPLE_LICENSE_HEADER_START@
   4 *
   5 * "Portions Copyright (c) 2002 Apple Computer, Inc.  All Rights
   6 * Reserved.  This file contains Original Code and/or Modifications of
   7 * Original Code as defined in and that are subject to the Apple Public
   8 * Source License Version 1.0 (the 'License').  You may not use this file
   9 * except in compliance with the License.  Please obtain a copy of the
  10 * License at http://www.apple.com/publicsource and read it before using
  11 * this file.
  12 *
  13 * The Original Code and all software distributed under the License are
  14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  18 * License for the specific language governing rights and limitations
  19 * under the License."
  20 *
  21 * @APPLE_LICENSE_HEADER_END@
  22 *
  23 */
  24
  25 #include <stdio.h>
  26 #include <unistd.h>
  27 #include <string.h>
  28 #include <sys/socket.h>
  29 /* this is needed to get SIOCPROTOATTACH/SIOCPROTODETACH */
  30 #define KERNEL_PRIVATE
  31 #include <sys/ioctl.h>
  32 #undef KERNEL_PRIVATE
  33 #include <net/if.h>
  34 #include <sys/types.h>
  35 #include <ifaddrs.h>
  36
  37
  38 /* options */
  39 #define IPv6_STARTUP            1
  40 #define IPv6_SHUTDOWN           2
  41 #define IPv6_STARTUP_ALL        3
  42 #define IPv6_SHUTDOWN_ALL       4
  43
  44 const char *if_exceptions[] = {"lo0", "gif0", "faith0", "stf0"};
  45
  46 extern char     *optarg;
  47
  48 void do_usage(void);
  49 int do_protoattach(int s, char *name);
  50 int do_protodetach(int s, char *name);
  51 int do_protoattach_all(int s);
  52 int do_protodetach_all(int s);
  53
  54
  55 int
  56 main(int argc, char **argv)
  57 {
  58         int     s,
  59                         ch,
  60                         option = 0,
  61                         err;
  62         char    *interface = NULL;
  63
  64         if ((ch = getopt(argc, argv, "u:d:ax")) != -1) {
  65                 switch (ch) {
  66                         case 'u':
  67                                 /* option -u: start up proto */
  68                                 option = IPv6_STARTUP;
  69                                 interface = optarg;
  70                                 break;
  71                         case 'd':
  72                                 /* option -d: shut down proto */
  73                                 option = IPv6_SHUTDOWN;
  74                                 interface = optarg;
  75                                 break;
  76                         case 'a':
  77                                 /* option -a: start up proto on all interfaces */
  78                                 option = IPv6_STARTUP_ALL;
  79                                 break;
  80                         case 'x':
  81                                 /* option -x: shut down proto on all interfaces */
  82                                 option = IPv6_SHUTDOWN_ALL;
  83                                 break;
  84                         default:
  85                                 break;
  86                 }
  87         }
  88
  89         if (!option) {
  90                 do_usage();
  91                 return 0;
  92         }
  93
  94         if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
  95                 err = s;
  96                 printf("%s: Error %d creating socket.\n", argv[0], err);
  97                 return 0;
  98         }
  99
 100         switch (option) {
 101                 case IPv6_STARTUP:
 102                         err = do_protoattach(s, interface);
 103                         if (err < 0)
 104                                 printf("%s: Error %d encountered attaching to interface %s.\n", argv[0], err, interface);
 105
 106                         break;
 107                 case IPv6_SHUTDOWN:
 108                         err = do_protodetach(s, interface);
 109                         if (err < 0)
 110                                 printf("%s: Error %d encountered detaching to interface %s.\n", argv[0], err, interface);
 111
 112                         break;
 113                 case IPv6_STARTUP_ALL:
 114                         err = do_protoattach_all(s);
 115                         if (err < 0)
 116                                 printf("%s: Error %d encountered attaching to interfaces.\n", argv[0], err);
 117
 118                         break;
 119                 case IPv6_SHUTDOWN_ALL:
 120                         err = do_protodetach_all(s);
 121                         if (err < 0)
 122                                 printf("%s: Error %d encountered detaching to interfaces.\n", argv[0], err);
 123
 124                         break;
 125                 default:
 126                         break;
 127         }
 128
 129         close(s);
 130
 131         return 0;
 132 }
 133
 134 void
 135 do_usage(void)
 136 {
 137         printf("Usage: \n\
 138         Start up IPv6 on ALL interfaces:        -a\n\
 139         Shut down IPv6 on ALL interfaces:       -x\n\
 140         Start up IPv6 on given interface:       -u [interface]\n\
 141         Shut down IPv6 on given interface:      -d [interface].\n");
 142 }
 143
 144 int
 145 do_protoattach(int s, char *name)
 146 {
 147     struct ifreq        ifr;
 148
 149     bzero(&ifr, sizeof(ifr));
 150     strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 151     return (ioctl(s, SIOCPROTOATTACH, &ifr));
 152 }
 153
 154 int
 155 do_protodetach(int s, char *name)
 156 {
 157     struct ifreq        ifr;
 158
 159     bzero(&ifr, sizeof(ifr));
 160     strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
 161     return (ioctl(s, SIOCPROTODETACH, &ifr));
 162 }
 163
 164 int
 165 do_protoattach_all(int s)
 166 {
 167         struct  ifaddrs *ifaddrs, *ifa;
 168         int             err;
 169
 170         if ((err = getifaddrs(&ifaddrs)) < 0)
 171                 return err; /* getifaddrs properly sets errno */
 172
 173         for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
 174                 /* skip over invalid interfaces */
 175                 if ((strcmp(ifa->ifa_name, if_exceptions[0])))
 176                         if (strcmp(ifa->ifa_name, if_exceptions[1]))
 177                                 if (strcmp(ifa->ifa_name, if_exceptions[2]))
 178                                         if (strcmp(ifa->ifa_name, if_exceptions[3])) {
 179                                                 /* this is a valid interface */
 180                                                 err = do_protoattach(s, ifa->ifa_name);
 181                                                 if (err)
 182                                                         break;
 183
 184                                                 while (ifa->ifa_next != NULL &&
 185                                                                 !(strcmp(ifa->ifa_name, ifa->ifa_next->ifa_name))) {
 186                                                         /* skip multiple entries for same interface */
 187                                                         ifa = ifa->ifa_next;
 188                                                 }
 189                                         }
 190         }
 191
 192         freeifaddrs(ifaddrs);
 193
 194         return err;
 195 }
 196
 197 int
 198 do_protodetach_all(int s)
 199 {
 200         struct  ifaddrs *ifaddrs, *ifa;
 201         int             err;
 202
 203         if ((err = getifaddrs(&ifaddrs)) < 0)
 204                 return err; /* getifaddrs properly sets errno */
 205
 206         for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
 207                 /* skip over invalid interfaces */
 208                 if ((strcmp(ifa->ifa_name, if_exceptions[0])))
 209                         if (strcmp(ifa->ifa_name, if_exceptions[1]))
 210                                 if (strcmp(ifa->ifa_name, if_exceptions[2]))
 211                                         if (strcmp(ifa->ifa_name, if_exceptions[3])) {
 212                                                 /* this is a valid interface */
 213                                                 err = do_protodetach(s, ifa->ifa_name);
 214                                                 if (err)
 215                                                         break;
 216
 217                                                 while (ifa->ifa_next != NULL &&
 218                                                                 !(strcmp(ifa->ifa_name, ifa->ifa_next->ifa_name))) {
 219                                                         /* skip multiple entries for same interface */
 220                                                         ifa = ifa->ifa_next;
 221                                                 }
 222                                         }
 223         }
 224
 225         freeifaddrs(ifaddrs);
 226
 227         return err;
 228 }