xref: /dragonfly/usr.sbin/ngctl/show.c (revision cd1c6085)
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 }
130