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
38 #include <err.h>
39 #include <netgraph.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <unistd.h>
43
44 #include "ngctl.h"
45
46 #define UNNAMED "<unnamed>"
47
48 static int ListCmd(int ac, char **av);
49
50 const struct ngcmd list_cmd = {
51 ListCmd,
52 "list [-ln]",
53 "Show information about all nodes",
54 "The list command shows information about every node that currently"
55 " exists in the netgraph system. The optional -n argument limits"
56 " this list to only those nodes with a global name assignment."
57 " The optional -l argument provides verbose output that includes"
58 " hook information as well.",
59 { "ls" }
60 };
61
62 static int
ListCmd(int ac,char ** av)63 ListCmd(int ac, char **av)
64 {
65 struct ng_mesg *resp;
66 struct namelist *nlist;
67 struct nodeinfo *ninfo;
68 int list_hooks = 0;
69 int named_only = 0;
70 int ch, rtn = CMDRTN_OK;
71
72 /* Get options */
73 optind = 1;
74 while ((ch = getopt(ac, av, "ln")) != -1) {
75 switch (ch) {
76 case 'l':
77 list_hooks = 1;
78 break;
79 case 'n':
80 named_only = 1;
81 break;
82 case '?':
83 default:
84 return (CMDRTN_USAGE);
85 break;
86 }
87 }
88 ac -= optind;
89 av += optind;
90
91 /* Get arguments */
92 switch (ac) {
93 case 0:
94 break;
95 default:
96 return (CMDRTN_USAGE);
97 }
98
99 /* Get list of nodes */
100 if (NgSendMsg(csock, ".", NGM_GENERIC_COOKIE,
101 named_only ? NGM_LISTNAMES : NGM_LISTNODES, NULL, 0) < 0) {
102 warn("send msg");
103 return (CMDRTN_ERROR);
104 }
105 if (NgAllocRecvMsg(csock, &resp, NULL) < 0) {
106 warn("recv msg");
107 return (CMDRTN_ERROR);
108 }
109
110 /* Show each node */
111 nlist = (struct namelist *) resp->data;
112 printf("There are %d total %snodes:\n",
113 nlist->numnames, named_only ? "named " : "");
114 ninfo = nlist->nodeinfo;
115 if (list_hooks) {
116 char path[NG_PATHSIZ];
117 char *argv[2] = { "show", path };
118
119 while (nlist->numnames > 0) {
120 snprintf(path, sizeof(path),
121 "[%lx]:", (u_long)ninfo->id);
122 if ((rtn = (*show_cmd.func)(2, argv)) != CMDRTN_OK)
123 break;
124 ninfo++;
125 nlist->numnames--;
126 if (nlist->numnames > 0)
127 printf("\n");
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