1 2 /* 3 * show.c 4 * 5 * Copyright (c) 1996-1999 Whistle Communications, Inc. 6 * All rights reserved. 7 * 8 * Subject to the following obligations and disclaimer of warranty, use and 9 * redistribution of this software, in source or object code forms, with or 10 * without modifications are expressly permitted by Whistle Communications; 11 * provided, however, that: 12 * 1. Any and all reproductions of the source or object code must include the 13 * copyright notice above and the following disclaimer of warranties; and 14 * 2. No rights are granted, in any manner or form, to use Whistle 15 * Communications, Inc. trademarks, including the mark "WHISTLE 16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 17 * such appears in the above copyright notice or in the software. 18 * 19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 35 * OF SUCH DAMAGE. 36 * 37 * $FreeBSD$ 38 */ 39 40 #include <err.h> 41 #include <netgraph.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <unistd.h> 45 46 #include "ngctl.h" 47 48 #define FMT " %-15s %-15s %-12s %-15s %-15s\n" 49 #define UNNAMED "<unnamed>" 50 #define NOSTATUS "<no status>" 51 52 static int ShowCmd(int ac, char **av); 53 54 const struct ngcmd show_cmd = { 55 ShowCmd, 56 "show [-n] <path>", 57 "Show information about the node at <path>", 58 "If the -n flag is given, hooks are not listed.", 59 { "inquire", "info" } 60 }; 61 62 static int 63 ShowCmd(int ac, char **av) 64 { 65 char *path; 66 struct ng_mesg *resp; 67 struct hooklist *hlist; 68 struct nodeinfo *ninfo; 69 int ch, no_hooks = 0; 70 71 /* Get options */ 72 optind = 1; 73 while ((ch = getopt(ac, av, "n")) != -1) { 74 switch (ch) { 75 case 'n': 76 no_hooks = 1; 77 break; 78 case '?': 79 default: 80 return (CMDRTN_USAGE); 81 break; 82 } 83 } 84 ac -= optind; 85 av += optind; 86 87 /* Get arguments */ 88 switch (ac) { 89 case 1: 90 path = av[0]; 91 break; 92 default: 93 return (CMDRTN_USAGE); 94 } 95 96 /* Get node info and hook list */ 97 if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE, 98 NGM_LISTHOOKS, NULL, 0) < 0) { 99 warn("send msg"); 100 return (CMDRTN_ERROR); 101 } 102 if (NgAllocRecvMsg(csock, &resp, NULL) < 0) { 103 warn("recv msg"); 104 return (CMDRTN_ERROR); 105 } 106 107 /* Show node information */ 108 hlist = (struct hooklist *) resp->data; 109 ninfo = &hlist->nodeinfo; 110 if (!*ninfo->name) 111 snprintf(ninfo->name, sizeof(ninfo->name), "%s", UNNAMED); 112 printf(" Name: %-15s Type: %-15s ID: %08x Num hooks: %d\n", 113 ninfo->name, ninfo->type, ninfo->id, ninfo->hooks); 114 if (!no_hooks && ninfo->hooks > 0) { 115 u_int k; 116 117 printf(FMT, "Local hook", "Peer name", 118 "Peer type", "Peer ID", "Peer hook"); 119 printf(FMT, "----------", "---------", 120 "---------", "-------", "---------"); 121 for (k = 0; k < ninfo->hooks; k++) { 122 struct linkinfo *const link = &hlist->link[k]; 123 struct nodeinfo *const peer = &hlist->link[k].nodeinfo; 124 char idbuf[20]; 125 126 if (!*peer->name) { 127 snprintf(peer->name, sizeof(peer->name), 128 "%s", UNNAMED); 129 } 130 snprintf(idbuf, sizeof(idbuf), "%08x", peer->id); 131 printf(FMT, link->ourhook, peer->name, 132 peer->type, idbuf, link->peerhook); 133 } 134 } 135 free(resp); 136 return (CMDRTN_OK); 137 } 138 139 140