usr.sbin/ngctl/config.c

   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