network_cmds/ifconfig.tproj/nexus.c

   1 /*
   2  * Copyright (c) 2017 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 /*
  24  * nexus.c
  25  * - report information about attached nexus
  26  */
  27
  28 /*
  29  * Modification History:
  30  *
  31  * April 10, 2017       Dieter Siegmund (dieter@apple.com)
  32  * - created
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/ioctl.h>
  37 #include <sys/socket.h>
  38
  39 #include <stdlib.h>
  40 #include <unistd.h>
  41
  42 #include <net/ethernet.h>
  43 #include <net/if.h>
  44 #include <net/if_var.h>
  45 #include <net/if_fake_var.h>
  46
  47 #include <net/route.h>
  48
  49 #include <ctype.h>
  50 #include <stdio.h>
  51 #include <string.h>
  52 #include <stdlib.h>
  53 #include <unistd.h>
  54 #include <err.h>
  55 #include <errno.h>
  56
  57 #include "ifconfig.h"
  58
  59 #if __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 135000
  60 #define flowswitch multistack
  61 #define ifnr_flowswitch ifnr_multistack
  62 #endif
  63
  64 static void
  65 nexus_status(int s)
  66 {
  67         struct if_nexusreq      ifnr;
  68         uuid_string_t           flowswitch;
  69         uuid_string_t           netif;
  70
  71         if (!verbose) {
  72                 return;
  73         }
  74         bzero((char *)&ifnr, sizeof(ifnr));
  75         strlcpy(ifnr.ifnr_name, ifr.ifr_name, sizeof(ifnr.ifnr_name));
  76         if (ioctl(s, SIOCGIFNEXUS, &ifnr) < 0) {
  77                 return;
  78         }
  79         if (uuid_is_null(ifnr.ifnr_netif)) {
  80                 /* technically, this shouldn't happen */
  81                 return;
  82         }
  83         uuid_unparse_upper(ifnr.ifnr_netif, netif);
  84         printf("\tnetif: %s\n", netif);
  85         if (uuid_is_null(ifnr.ifnr_flowswitch) == 0) {
  86                 uuid_unparse_upper(ifnr.ifnr_flowswitch, flowswitch);
  87                 printf("\tflowswitch: %s\n", flowswitch);
  88         }
  89         return;
  90 }
  91
  92 static struct afswtch af_fake = {
  93         .af_name        = "af_fake",
  94         .af_af          = AF_UNSPEC,
  95         .af_other_status = nexus_status,
  96 };
  97
  98 static __constructor void
  99 fake_ctor(void)
 100 {
 101         af_register(&af_fake);
 102 }
 103