usr.sbin/ngctl/show.c

   1 /*
   2  * show.c
   3  *
   4  * Copyright (c) 1996-1999 Whistle Communications, Inc.
   5  * All rights reserved.
   6  *
   7  * Subject to the following obligations and disclaimer of warranty, use and
   8  * redistribution of this software, in source or object code forms, with or
   9  * without modifications are expressly permitted by Whistle Communications;
  10  * provided, however, that:
  11  * 1. Any and all reproductions of the source or object code must include the
  12  *    copyright notice above and the following disclaimer of warranties; and
  13  * 2. No rights are granted, in any manner or form, to use Whistle
  14  *    Communications, Inc. trademarks, including the mark "WHISTLE
  15  *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
  16  *    such appears in the above copyright notice or in the software.
  17  *
  18  * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
  19  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
  20  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
  21  * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  23  * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
  24  * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
  25  * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
  26  * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
  27  * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
  28  * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
  29  * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
  31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  33  * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
  34  * OF SUCH DAMAGE.
  35  *
  36  * $FreeBSD: src/usr.sbin/ngctl/show.c,v 1.2 1999/11/30 02:45:31 archie Exp $
  37  * $DragonFly: src/usr.sbin/ngctl/show.c,v 1.5 2008/07/10 18:29:52 swildner Exp $
  38  */
  39
  40 #include "ngctl.h"
  41
  42 #define FMT             "  %-15s %-15s %-12s %-15s %-15s\n"
  43 #define UNNAMED         "<unnamed>"
  44 #define NOSTATUS        "<no status>"
  45
  46 static int ShowCmd(int ac, const char **av);
  47
  48 const struct ngcmd show_cmd = {
  49         ShowCmd,
  50         "show [-n] <path>",
  51         "Show information about the node at <path>",
  52         "If the -n flag is given, hooks are not listed.",
  53         { "inquire", "info" }
  54 };
  55
  56 static int
  57 ShowCmd(int ac, const char **av)
  58 {
  59         const char *path;
  60         u_char rbuf[16 * 1024];
  61         struct ng_mesg *const resp = (struct ng_mesg *) rbuf;
  62         struct hooklist *const hlist = (struct hooklist *) resp->data;
  63         struct nodeinfo *const ninfo = &hlist->nodeinfo;
  64         int ch, no_hooks = 0;
  65
  66         /* Get options */
  67         optind = 1;
  68         while ((ch = getopt(ac, __DECONST(char **, av), "n")) != -1) {
  69                 switch (ch) {
  70                 case 'n':
  71                         no_hooks = 1;
  72                         break;
  73                 case '?':
  74                 default:
  75                         return(CMDRTN_USAGE);
  76                         break;
  77                 }
  78         }
  79         ac -= optind;
  80         av += optind;
  81
  82         /* Get arguments */
  83         switch (ac) {
  84         case 1:
  85                 path = av[0];
  86                 break;
  87         default:
  88                 return(CMDRTN_USAGE);
  89         }
  90
  91         /* Get node info and hook list */
  92         if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
  93             NGM_LISTHOOKS, NULL, 0) < 0) {
  94                 warn("send msg");
  95                 return(CMDRTN_ERROR);
  96         }
  97         if (NgRecvMsg(csock, resp, sizeof(rbuf), NULL) < 0) {
  98                 warn("recv msg");
  99                 return(CMDRTN_ERROR);
 100         }
 101
 102         /* Show node information */
 103         if (!*ninfo->name)
 104                 snprintf(ninfo->name, sizeof(ninfo->name), "%s", UNNAMED);
 105         printf("  Name: %-15s Type: %-15s ID: %08x   Num hooks: %d\n",
 106             ninfo->name, ninfo->type, ninfo->id, ninfo->hooks);
 107         if (!no_hooks && ninfo->hooks > 0) {
 108                 uint32_t k;
 109
 110                 printf(FMT, "Local hook", "Peer name",
 111                     "Peer type", "Peer ID", "Peer hook");
 112                 printf(FMT, "----------", "---------",
 113                     "---------", "-------", "---------");
 114                 for (k = 0; k < ninfo->hooks; k++) {
 115                         struct linkinfo *const sc_link = &hlist->link[k];
 116                         struct nodeinfo *const peer = &hlist->link[k].nodeinfo;
 117                         char idbuf[20];
 118
 119                         if (!*peer->name) {
 120                                 snprintf(peer->name, sizeof(peer->name),
 121                                   "%s", UNNAMED);
 122                         }
 123                         snprintf(idbuf, sizeof(idbuf), "%08x", peer->id);
 124                         printf(FMT, sc_link->ourhook, peer->name,
 125                             peer->type, idbuf, sc_link->peerhook);
 126                 }
 127         }
 128         return(CMDRTN_OK);
 129 }