xref: /freebsd/usr.sbin/ngctl/config.c (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1 /*
2  * config.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 <errno.h>
39 #include <netgraph.h>
40 #include <stdio.h>
41 #include <string.h>
42 #include <unistd.h>
43 
44 #include "ngctl.h"
45 
46 #define NOCONFIG	"<no config>"
47 
48 static int ConfigCmd(int ac, char **av);
49 
50 const struct ngcmd config_cmd = {
51 	ConfigCmd,
52 	"config <path> [arguments]",
53 	"get or set configuration of node at <path>",
54 	NULL,
55 	{ NULL }
56 };
57 
58 static int
59 ConfigCmd(int ac, char **av)
60 {
61 	u_char sbuf[sizeof(struct ng_mesg) + NG_TEXTRESPONSE];
62 	struct ng_mesg *const resp = (struct ng_mesg *) sbuf;
63 	char *const status = (char *) resp->data;
64 	char *path;
65 	char buf[NG_TEXTRESPONSE];
66 	int nostat = 0, i;
67 
68 	/* Get arguments */
69 	if (ac < 2)
70 		return (CMDRTN_USAGE);
71 	path = av[1];
72 
73 	*buf = '\0';
74 	for (i = 2; i < ac; i++) {
75 		if (i != 2)
76 			strcat(buf, " ");
77 		strcat(buf, av[i]);
78 	}
79 
80 	/* Get node config summary */
81 	if (*buf != '\0')
82 		i = NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
83 	            NGM_TEXT_CONFIG, buf, strlen(buf) + 1);
84 	else
85 		i = NgSendMsg(csock, path, NGM_GENERIC_COOKIE,
86 	            NGM_TEXT_CONFIG, NULL, 0);
87 	if (i < 0) {
88 		switch (errno) {
89 		case EINVAL:
90 			nostat = 1;
91 			break;
92 		default:
93 			warn("send msg");
94 			return (CMDRTN_ERROR);
95 		}
96 	} else {
97 		if (NgRecvMsg(csock, resp, sizeof(sbuf), NULL) < 0
98 		    || (resp->header.flags & NGF_RESP) == 0)
99 			nostat = 1;
100 	}
101 
102 	/* Show it */
103 	if (nostat)
104 		printf("No config available for \"%s\"\n", path);
105 	else
106 		printf("Config for \"%s\":\n%s\n", path, status);
107 	return (CMDRTN_OK);
108 }
109 
110