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
37 #include <err.h>
38 #include <netgraph.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <unistd.h>
42
43 #include "ngctl.h"
44
45 #define FMT " %-15s %-15s %-12s %-15s %-15s\n"
46 #define UNNAMED "<unnamed>"
47 #define NOSTATUS "<no status>"
48
49 static int ShowCmd(int ac, char **av);
50
51 const struct ngcmd show_cmd = {
52 ShowCmd,
53 "show [-n] <path>",
54 "Show information about the node at <path>",
55 "If the -n flag is given, hooks are not listed.",
56 { "inquire", "info" }
57 };
58
59 static int
ShowCmd(int ac,char ** av)60 ShowCmd(int ac, char **av)
61 {
62 char *path;
63 struct ng_mesg *resp;
64 struct hooklist *hlist;
65 struct nodeinfo *ninfo;
66 int ch, no_hooks = 0;
67
68 /* Get options */
69 optreset = 1;
70 optind = 1;
71 while ((ch = getopt(ac, av, "n")) != -1) {
72 switch (ch) {
73 case 'n':
74 no_hooks = 1;
75 break;
76 default:
77 return (CMDRTN_USAGE);
78 break;
79 }
80 }
81 ac -= optind;
82 av += optind;
83
84 /* Get arguments */
85 switch (ac) {
86 case 1:
87 path = av[0];
88 break;
89 default:
90 return (CMDRTN_USAGE);
91 }
92
93 /* Get node info and hook list */
94 if (NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
95 NGM_LISTHOOKS, NULL, 0) < 0) {
96 warn("send msg");
97 return (CMDRTN_ERROR);
98 }
99 if (NgAllocRecvMsg(csock, &resp, NULL) < 0) {
100 warn("recv msg");
101 return (CMDRTN_ERROR);
102 }
103
104 /* Show node information */
105 hlist = (struct hooklist *) resp->data;
106 ninfo = &hlist->nodeinfo;
107 if (!*ninfo->name)
108 snprintf(ninfo->name, sizeof(ninfo->name), "%s", UNNAMED);
109 printf(" Name: %-15s Type: %-15s ID: %08x Num hooks: %d\n",
110 ninfo->name, ninfo->type, ninfo->id, ninfo->hooks);
111 if (!no_hooks && ninfo->hooks > 0) {
112 u_int k;
113
114 printf(FMT, "Local hook", "Peer name",
115 "Peer type", "Peer ID", "Peer hook");
116 printf(FMT, "----------", "---------",
117 "---------", "-------", "---------");
118 for (k = 0; k < ninfo->hooks; k++) {
119 struct linkinfo *const link = &hlist->link[k];
120 struct nodeinfo *const peer = &hlist->link[k].nodeinfo;
121 char idbuf[20];
122
123 if (!*peer->name) {
124 snprintf(peer->name, sizeof(peer->name),
125 "%s", UNNAMED);
126 }
127 snprintf(idbuf, sizeof(idbuf), "%08x", peer->id);
128 printf(FMT, link->ourhook, peer->name,
129 peer->type, idbuf, link->peerhook);
130 }
131 }
132 free(resp);
133 return (CMDRTN_OK);
134 }
135