ifconfig.tproj/if6lowpan.c

   1 /*
   2  * Copyright (c) 2017-2018 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 /*
  30  * Copyright (c) 1999
  31  *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by Bill Paul.
  44  * 4. Neither the name of the author nor the names of any co-contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
  52  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  53  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  54  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  55  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  56  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  57  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  58  * THE POSSIBILITY OF SUCH DAMAGE.
  59  */
  60
  61 #include <sys/param.h>
  62 #include <sys/ioctl.h>
  63 #include <sys/socket.h>
  64 #include <sys/sockio.h>
  65
  66 #include <stdlib.h>
  67 #include <unistd.h>
  68
  69 #include <net/ethernet.h>
  70 #include <net/if.h>
  71 #include <net/if_var.h>
  72 #include <net/if_6lowpan_var.h>
  73 #include <net/route.h>
  74
  75 #include <ctype.h>
  76 #include <stdio.h>
  77 #include <string.h>
  78 #include <stdlib.h>
  79 #include <unistd.h>
  80 #include <err.h>
  81 #include <errno.h>
  82
  83 #include "ifconfig.h"
  84
  85 #include <sys/cdefs.h>
  86
  87
  88 static boolean_t is_sixlowpan_inited = FALSE;
  89 static struct sixlowpanreq params;
  90
  91 static int
  92 get6lowpan(int s, struct ifreq *ifr, struct sixlowpanreq *req)
  93 {
  94         bzero((char *)req, sizeof(*req));
  95         ifr->ifr_data = (caddr_t)req;
  96         return ioctl(s, SIOCGIF6LOWPAN, (caddr_t)ifr);
  97 }
  98
  99 static void
 100 sixlowpan_status(int s)
 101 {
 102         struct sixlowpanreq req;
 103
 104         if (get6lowpan(s, &ifr, &req) != -1)
 105                 printf("\t6lowpan: parent interface: %s\n",
 106                         req.parent[0] == '\0' ?
 107                         "<none>" : req.parent);
 108 }
 109
 110
 111 static void
 112 set6lowpandev(const char *val, int d, int s, const struct afswtch *afp)
 113 {
 114         struct sixlowpanreq req;
 115
 116         strlcpy(params.parent, val, sizeof(params.parent));
 117         is_sixlowpan_inited = TRUE;
 118         fprintf(stderr, "val %s\n", val);
 119
 120         strlcpy(req.parent, val, sizeof(req.parent));
 121         ifr.ifr_data = (caddr_t) &req;
 122         if (ioctl(s, SIOCSIF6LOWPAN, (caddr_t)&ifr) == -1)
 123                 err(1, "SIOCSIF6LOWPAN");
 124 }
 125
 126 static void
 127 unset6lowpandev(const char *val, int d, int s, const struct afswtch *afp)
 128 {
 129         struct sixlowpanreq req;
 130
 131         bzero((char *)&req, sizeof(req));
 132         ifr.ifr_data = (caddr_t)&req;
 133
 134         if (ioctl(s, SIOCGIF6LOWPAN, (caddr_t)&ifr) == -1)
 135                 err(1, "SIOCGIF6LOWPAN");
 136
 137         bzero((char *)&req, sizeof(req));
 138         if (ioctl(s, SIOCSIF6LOWPAN, (caddr_t)&ifr) == -1)
 139                 err(1, "SIOCSIF6LOWPAN");
 140 }
 141
 142 static void
 143 sixlowpan_create(const char *val, int d, int s, const struct afswtch *afp)
 144 {
 145         strlcpy(params.parent, val, sizeof(params.parent));
 146     is_sixlowpan_inited = TRUE;
 147 }
 148
 149 static void
 150 sixlowpan_clone_cb(int s, void *arg)
 151 {
 152         if (is_sixlowpan_inited == TRUE && params.parent[0] == '\0')
 153                 errx(1, "6lowpandev must be specified");
 154 }
 155
 156 static struct cmd sixlowpan_cmds[] = {
 157         DEF_CLONE_CMD_ARG("6lowpandev", sixlowpan_create),
 158         DEF_CMD_OPTARG("6lowpansetdev", set6lowpandev),
 159         DEF_CMD_OPTARG("6lowpanunsetdev", unset6lowpandev),
 160 };
 161 static struct afswtch af_6lowpan = {
 162         .af_name        = "af_6lowpan",
 163         .af_af          = AF_UNSPEC,
 164         .af_other_status = sixlowpan_status,
 165 };
 166
 167 static __constructor void
 168 sixlowpan_ctor(void)
 169 {
 170 #define N(a)    (sizeof(a) / sizeof(a[0]))
 171         int i;
 172
 173         for (i = 0; i < N(sixlowpan_cmds);  i++)
 174                 cmd_register(&sixlowpan_cmds[i]);
 175         af_register(&af_6lowpan);
 176         callback_register(sixlowpan_clone_cb, NULL);
 177 #undef N
 178 }