1
2/*
3 * list.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 UNNAMED		"<unnamed>"
49
50static int ListCmd(int ac, char **av);
51
52const struct ngcmd list_cmd = {
53	ListCmd,
54	"list [-ln]",
55	"Show information about all nodes",
56	"The list command shows information about every node that currently"
57	" exists in the netgraph system. The optional -n argument limits"
58	" this list to only those nodes with a global name assignment."
59	" The optional -l argument provides verbose output that includes"
60	" hook information as well.",
61	{ "ls" }
62};
63
64static int
65ListCmd(int ac, char **av)
66{
67	struct ng_mesg *resp;
68	struct namelist *nlist;
69	struct nodeinfo *ninfo;
70	int list_hooks = 0;
71	int named_only = 0;
72	int ch, rtn = CMDRTN_OK;
73
74	/* Get options */
75	optind = 1;
76	while ((ch = getopt(ac, av, "ln")) != -1) {
77		switch (ch) {
78		case 'l':
79			list_hooks = 1;
80			break;
81		case 'n':
82			named_only = 1;
83			break;
84		case '?':
85		default:
86			return (CMDRTN_USAGE);
87			break;
88		}
89	}
90	ac -= optind;
91	av += optind;
92
93	/* Get arguments */
94	switch (ac) {
95	case 0:
96		break;
97	default:
98		return (CMDRTN_USAGE);
99	}
100
101	/* Get list of nodes */
102	if (NgSendMsg(csock, ".", NGM_GENERIC_COOKIE,
103	    named_only ? NGM_LISTNAMES : NGM_LISTNODES, NULL, 0) < 0) {
104		warn("send msg");
105		return (CMDRTN_ERROR);
106	}
107	if (NgAllocRecvMsg(csock, &resp, NULL) < 0) {
108		warn("recv msg");
109		return (CMDRTN_ERROR);
110	}
111
112	/* Show each node */
113	nlist = (struct namelist *) resp->data;
114	printf("There are %d total %snodes:\n",
115	    nlist->numnames, named_only ? "named " : "");
116	ninfo = nlist->nodeinfo;
117	if (list_hooks) {
118		char	path[NG_PATHSIZ];
119		char	*argv[2] = { "show", path };
120
121		while (nlist->numnames > 0) {
122			snprintf(path, sizeof(path),
123			    "[%lx]:", (u_long)ninfo->id);
124			if ((rtn = (*show_cmd.func)(2, argv)) != CMDRTN_OK)
125				break;
126			ninfo++;
127			nlist->numnames--;
128		}
129	} else {
130		while (nlist->numnames > 0) {
131			if (!*ninfo->name)
132				snprintf(ninfo->name, sizeof(ninfo->name),
133				    "%s", UNNAMED);
134			printf("  Name: %-15s Type: %-15s ID: %08x   "
135			    "Num hooks: %d\n",
136			    ninfo->name, ninfo->type, ninfo->id, ninfo->hooks);
137			ninfo++;
138			nlist->numnames--;
139		}
140	}
141
142	/* Done */
143	free(resp);
144	return (rtn);
145}
146
147