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], *pos, *end; 66 int nostat = 0, i; 67 68 /* Get arguments */ 69 if (ac < 2) 70 return (CMDRTN_USAGE); 71 path = av[1]; 72 73 pos = buf; 74 end = buf + sizeof(buf); 75 for (i = 2; i < ac; i++) { 76 if (i > 2) { 77 if (pos == end) 78 return (CMDRTN_USAGE); 79 *pos++ = ' '; 80 } 81 if ((pos += strlcpy(pos, av[i], end - pos)) >= end) 82 return (CMDRTN_USAGE); 83 } 84 *pos = '\0'; 85 86 /* Get node config summary */ 87 if (*buf != '\0') 88 i = NgSendMsg(csock, path, NGM_GENERIC_COOKIE, 89 NGM_TEXT_CONFIG, buf, pos - buf + 1); 90 else 91 i = NgSendMsg(csock, path, NGM_GENERIC_COOKIE, 92 NGM_TEXT_CONFIG, NULL, 0); 93 if (i < 0) { 94 switch (errno) { 95 case EINVAL: 96 nostat = 1; 97 break; 98 default: 99 warn("send msg"); 100 return (CMDRTN_ERROR); 101 } 102 } else { 103 if (NgRecvMsg(csock, resp, sizeof(sbuf), NULL) < 0 || 104 (resp->header.flags & NGF_RESP) == 0) 105 nostat = 1; 106 } 107 108 /* Show it */ 109 if (nostat) 110 printf("No config available for \"%s\"\n", path); 111 else 112 printf("Config for \"%s\":\n%s\n", path, status); 113 return (CMDRTN_OK); 114 } 115