17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*d04ccbb3Scarlsonj * Common Development and Distribution License (the "License").
6*d04ccbb3Scarlsonj * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22*d04ccbb3Scarlsonj * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23*d04ccbb3Scarlsonj * Use is subject to license terms.
247c478bd9Sstevel@tonic-gate */
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate #include <sys/types.h>
277c478bd9Sstevel@tonic-gate #include <stdlib.h>
287c478bd9Sstevel@tonic-gate #include <stdio.h>
297c478bd9Sstevel@tonic-gate #include <ctype.h>
30*d04ccbb3Scarlsonj #include <string.h>
317c478bd9Sstevel@tonic-gate #include <dhcpagent_ipc.h>
327c478bd9Sstevel@tonic-gate #include <dhcp_inittab.h>
337c478bd9Sstevel@tonic-gate #include <dhcp_symbol.h>
347c478bd9Sstevel@tonic-gate
35*d04ccbb3Scarlsonj #define DHCP_INFO_VENDOR_START_V4 256
36*d04ccbb3Scarlsonj #define DHCP_INFO_VENDOR_START_V6 65536
377c478bd9Sstevel@tonic-gate
387c478bd9Sstevel@tonic-gate static void
usage(const char * program)397c478bd9Sstevel@tonic-gate usage(const char *program)
407c478bd9Sstevel@tonic-gate {
417c478bd9Sstevel@tonic-gate (void) fprintf(stderr,
42*d04ccbb3Scarlsonj "usage: %s [-c] [-i interface] [-n limit] [-v {4|6}] code\n"
43*d04ccbb3Scarlsonj " %s [-c] [-i interface] [-n limit] [-v {4|6}] identifier\n",
447c478bd9Sstevel@tonic-gate program, program);
457c478bd9Sstevel@tonic-gate
467c478bd9Sstevel@tonic-gate exit(DHCP_EXIT_BADARGS);
477c478bd9Sstevel@tonic-gate }
487c478bd9Sstevel@tonic-gate
497c478bd9Sstevel@tonic-gate int
main(int argc,char ** argv)507c478bd9Sstevel@tonic-gate main(int argc, char **argv)
517c478bd9Sstevel@tonic-gate {
527c478bd9Sstevel@tonic-gate ssize_t max_lines = -1;
537c478bd9Sstevel@tonic-gate size_t gran, n_spaces = 0;
547c478bd9Sstevel@tonic-gate dhcp_optnum_t optnum;
557c478bd9Sstevel@tonic-gate dhcp_ipc_request_t *request;
567c478bd9Sstevel@tonic-gate dhcp_ipc_reply_t *reply;
577c478bd9Sstevel@tonic-gate int c, error, i;
587c478bd9Sstevel@tonic-gate char *ifname = "";
597c478bd9Sstevel@tonic-gate char *value, *valuep;
607c478bd9Sstevel@tonic-gate dhcp_symbol_t *entry;
617c478bd9Sstevel@tonic-gate DHCP_OPT *opt;
627c478bd9Sstevel@tonic-gate size_t opt_len;
637c478bd9Sstevel@tonic-gate boolean_t is_canonical = B_FALSE;
64*d04ccbb3Scarlsonj long version = 4;
65*d04ccbb3Scarlsonj boolean_t isv6;
66*d04ccbb3Scarlsonj uint8_t *valptr;
677c478bd9Sstevel@tonic-gate
68*d04ccbb3Scarlsonj while ((c = getopt(argc, argv, "ci:n:v:")) != EOF) {
697c478bd9Sstevel@tonic-gate
707c478bd9Sstevel@tonic-gate switch (c) {
717c478bd9Sstevel@tonic-gate
727c478bd9Sstevel@tonic-gate case 'c':
737c478bd9Sstevel@tonic-gate is_canonical = B_TRUE;
747c478bd9Sstevel@tonic-gate break;
757c478bd9Sstevel@tonic-gate
767c478bd9Sstevel@tonic-gate case 'i':
777c478bd9Sstevel@tonic-gate ifname = optarg;
787c478bd9Sstevel@tonic-gate break;
797c478bd9Sstevel@tonic-gate
807c478bd9Sstevel@tonic-gate case 'n':
817c478bd9Sstevel@tonic-gate max_lines = strtoul(optarg, NULL, 0);
827c478bd9Sstevel@tonic-gate break;
837c478bd9Sstevel@tonic-gate
84*d04ccbb3Scarlsonj case 'v':
85*d04ccbb3Scarlsonj version = strtol(optarg, NULL, 0);
86*d04ccbb3Scarlsonj if (version != 4 && version != 6)
87*d04ccbb3Scarlsonj usage(argv[0]);
88*d04ccbb3Scarlsonj break;
89*d04ccbb3Scarlsonj
907c478bd9Sstevel@tonic-gate case '?':
917c478bd9Sstevel@tonic-gate usage(argv[0]);
927c478bd9Sstevel@tonic-gate
937c478bd9Sstevel@tonic-gate default:
947c478bd9Sstevel@tonic-gate break;
957c478bd9Sstevel@tonic-gate }
967c478bd9Sstevel@tonic-gate }
977c478bd9Sstevel@tonic-gate
987c478bd9Sstevel@tonic-gate if (argc - optind != 1)
997c478bd9Sstevel@tonic-gate usage(argv[0]);
1007c478bd9Sstevel@tonic-gate
1017c478bd9Sstevel@tonic-gate /*
1027c478bd9Sstevel@tonic-gate * we either have a code or an identifer. if we have a code,
1037c478bd9Sstevel@tonic-gate * then values over 256 indicate a vendor option. if we have
1047c478bd9Sstevel@tonic-gate * an identifier, then use inittab_getbyname() to turn the
1057c478bd9Sstevel@tonic-gate * identifier into a code, then send the request over the wire.
1067c478bd9Sstevel@tonic-gate */
1077c478bd9Sstevel@tonic-gate
108*d04ccbb3Scarlsonj isv6 = (version == 6);
109*d04ccbb3Scarlsonj
1107c478bd9Sstevel@tonic-gate if (isalpha(*argv[optind])) {
1117c478bd9Sstevel@tonic-gate
112*d04ccbb3Scarlsonj entry = inittab_getbyname(ITAB_CAT_SITE | ITAB_CAT_STANDARD |
113*d04ccbb3Scarlsonj ITAB_CAT_VENDOR | ITAB_CAT_FIELD |
114*d04ccbb3Scarlsonj (isv6 ? ITAB_CAT_V6 : 0), ITAB_CONS_INFO,
1157c478bd9Sstevel@tonic-gate argv[optind]);
1167c478bd9Sstevel@tonic-gate
1177c478bd9Sstevel@tonic-gate if (entry == NULL) {
1187c478bd9Sstevel@tonic-gate (void) fprintf(stderr, "%s: unknown identifier `%s'\n",
1197c478bd9Sstevel@tonic-gate argv[0], argv[optind]);
1207c478bd9Sstevel@tonic-gate return (DHCP_EXIT_BADARGS);
1217c478bd9Sstevel@tonic-gate }
1227c478bd9Sstevel@tonic-gate
1237c478bd9Sstevel@tonic-gate optnum.code = entry->ds_code;
1247c478bd9Sstevel@tonic-gate optnum.category = entry->ds_category;
1257c478bd9Sstevel@tonic-gate
1267c478bd9Sstevel@tonic-gate } else {
127*d04ccbb3Scarlsonj ulong_t start;
1287c478bd9Sstevel@tonic-gate
1297c478bd9Sstevel@tonic-gate optnum.code = strtoul(argv[optind], 0, 0);
130*d04ccbb3Scarlsonj optnum.category = ITAB_CAT_STANDARD | ITAB_CAT_SITE;
1317c478bd9Sstevel@tonic-gate
1327c478bd9Sstevel@tonic-gate /*
1337c478bd9Sstevel@tonic-gate * sigh. this is a hack, but it's needed for backward
1347c478bd9Sstevel@tonic-gate * compatibility with the CA dhcpinfo program.
1357c478bd9Sstevel@tonic-gate */
1367c478bd9Sstevel@tonic-gate
137*d04ccbb3Scarlsonj start = isv6 ? DHCP_INFO_VENDOR_START_V6 :
138*d04ccbb3Scarlsonj DHCP_INFO_VENDOR_START_V4;
139*d04ccbb3Scarlsonj if (optnum.code > start) {
140*d04ccbb3Scarlsonj optnum.code -= start;
1417c478bd9Sstevel@tonic-gate optnum.category = ITAB_CAT_VENDOR;
1427c478bd9Sstevel@tonic-gate }
1437c478bd9Sstevel@tonic-gate
144*d04ccbb3Scarlsonj if (isv6)
145*d04ccbb3Scarlsonj optnum.category |= ITAB_CAT_V6;
146*d04ccbb3Scarlsonj
1477c478bd9Sstevel@tonic-gate entry = inittab_getbycode(optnum.category, ITAB_CONS_INFO,
1487c478bd9Sstevel@tonic-gate optnum.code);
1497c478bd9Sstevel@tonic-gate
1507c478bd9Sstevel@tonic-gate if (entry == NULL) {
1517c478bd9Sstevel@tonic-gate (void) fprintf(stderr, "%s: unknown code `%s'\n",
1527c478bd9Sstevel@tonic-gate argv[0], argv[optind]);
1537c478bd9Sstevel@tonic-gate return (DHCP_EXIT_BADARGS);
1547c478bd9Sstevel@tonic-gate }
1557c478bd9Sstevel@tonic-gate optnum.category = entry->ds_category;
1567c478bd9Sstevel@tonic-gate }
1577c478bd9Sstevel@tonic-gate
1587c478bd9Sstevel@tonic-gate optnum.size = entry->ds_max * inittab_type_to_size(entry);
1597c478bd9Sstevel@tonic-gate
1607c478bd9Sstevel@tonic-gate /*
1617c478bd9Sstevel@tonic-gate * send the request to the agent and reap the reply
1627c478bd9Sstevel@tonic-gate */
1637c478bd9Sstevel@tonic-gate
164*d04ccbb3Scarlsonj request = dhcp_ipc_alloc_request(DHCP_GET_TAG | (isv6 ? DHCP_V6 : 0),
165*d04ccbb3Scarlsonj ifname, &optnum, sizeof (dhcp_optnum_t), DHCP_TYPE_OPTNUM);
1667c478bd9Sstevel@tonic-gate
1677c478bd9Sstevel@tonic-gate if (request == NULL)
1687c478bd9Sstevel@tonic-gate return (DHCP_EXIT_SYSTEM);
1697c478bd9Sstevel@tonic-gate
1707c478bd9Sstevel@tonic-gate error = dhcp_ipc_make_request(request, &reply, DHCP_IPC_WAIT_DEFAULT);
1717c478bd9Sstevel@tonic-gate if (error != 0 || reply->return_code != 0) {
1727c478bd9Sstevel@tonic-gate
1737c478bd9Sstevel@tonic-gate if (error == 0)
1747c478bd9Sstevel@tonic-gate error = reply->return_code;
1757c478bd9Sstevel@tonic-gate
1767c478bd9Sstevel@tonic-gate (void) fprintf(stderr, "%s: %s\n", argv[0],
1777c478bd9Sstevel@tonic-gate dhcp_ipc_strerror(error));
1787c478bd9Sstevel@tonic-gate
1797c478bd9Sstevel@tonic-gate if (error == DHCP_IPC_E_TIMEOUT)
1807c478bd9Sstevel@tonic-gate return (DHCP_EXIT_TIMEOUT);
1817c478bd9Sstevel@tonic-gate
1827c478bd9Sstevel@tonic-gate return (DHCP_EXIT_FAILURE);
1837c478bd9Sstevel@tonic-gate }
1847c478bd9Sstevel@tonic-gate
1857c478bd9Sstevel@tonic-gate opt = dhcp_ipc_get_data(reply, &opt_len, NULL);
1867c478bd9Sstevel@tonic-gate
1877c478bd9Sstevel@tonic-gate /*
1887c478bd9Sstevel@tonic-gate * no data means that the client has an ACK but has no information
1897c478bd9Sstevel@tonic-gate * about the specified option; return success
1907c478bd9Sstevel@tonic-gate */
1917c478bd9Sstevel@tonic-gate
1927c478bd9Sstevel@tonic-gate if (opt_len == 0)
1937c478bd9Sstevel@tonic-gate return (DHCP_EXIT_SUCCESS);
1947c478bd9Sstevel@tonic-gate
1957c478bd9Sstevel@tonic-gate /*
1967c478bd9Sstevel@tonic-gate * check for protocol error
1977c478bd9Sstevel@tonic-gate */
1987c478bd9Sstevel@tonic-gate
199*d04ccbb3Scarlsonj if (isv6) {
200*d04ccbb3Scarlsonj dhcpv6_option_t d6o;
201*d04ccbb3Scarlsonj
202*d04ccbb3Scarlsonj if (opt_len < sizeof (d6o))
203*d04ccbb3Scarlsonj return (DHCP_EXIT_FAILURE);
204*d04ccbb3Scarlsonj (void) memcpy(&d6o, opt, sizeof (d6o));
205*d04ccbb3Scarlsonj if (opt_len != ntohs(d6o.d6o_len) + sizeof (d6o))
206*d04ccbb3Scarlsonj return (DHCP_EXIT_FAILURE);
207*d04ccbb3Scarlsonj valptr = (uint8_t *)opt + sizeof (d6o);
208*d04ccbb3Scarlsonj opt_len -= sizeof (d6o);
209*d04ccbb3Scarlsonj } else {
210*d04ccbb3Scarlsonj if (opt_len < 2 || (opt_len - 2 != opt->len))
211*d04ccbb3Scarlsonj return (DHCP_EXIT_FAILURE);
212*d04ccbb3Scarlsonj opt_len -= 2;
213*d04ccbb3Scarlsonj valptr = opt->value;
214*d04ccbb3Scarlsonj }
2157c478bd9Sstevel@tonic-gate
2167c478bd9Sstevel@tonic-gate if (is_canonical) {
2177c478bd9Sstevel@tonic-gate
218*d04ccbb3Scarlsonj value = malloc(opt_len * (sizeof ("0xNN") + 1));
2197c478bd9Sstevel@tonic-gate if (value == NULL) {
2207c478bd9Sstevel@tonic-gate (void) fprintf(stderr, "%s: out of memory\n", argv[0]);
2217c478bd9Sstevel@tonic-gate return (DHCP_EXIT_FAILURE);
2227c478bd9Sstevel@tonic-gate }
2237c478bd9Sstevel@tonic-gate
224*d04ccbb3Scarlsonj for (i = 0, valuep = value; i < opt_len; i++)
225*d04ccbb3Scarlsonj valuep += sprintf(valuep, "0x%02X ", valptr[i]);
2267c478bd9Sstevel@tonic-gate
2277c478bd9Sstevel@tonic-gate valuep[-1] = '\0';
2287c478bd9Sstevel@tonic-gate gran = 1;
2297c478bd9Sstevel@tonic-gate
2307c478bd9Sstevel@tonic-gate } else {
2317c478bd9Sstevel@tonic-gate
232*d04ccbb3Scarlsonj value = inittab_decode(entry, valptr, opt_len, B_TRUE);
2337c478bd9Sstevel@tonic-gate if (value == NULL) {
2347c478bd9Sstevel@tonic-gate (void) fprintf(stderr, "%s: cannot decode agent's "
2357c478bd9Sstevel@tonic-gate "reply\n", argv[0]);
2367c478bd9Sstevel@tonic-gate return (DHCP_EXIT_FAILURE);
2377c478bd9Sstevel@tonic-gate }
2387c478bd9Sstevel@tonic-gate
2397c478bd9Sstevel@tonic-gate gran = entry->ds_gran;
2407c478bd9Sstevel@tonic-gate }
2417c478bd9Sstevel@tonic-gate
2427c478bd9Sstevel@tonic-gate /*
2437c478bd9Sstevel@tonic-gate * now display `gran' items per line, printing at most `max_lines'.
2447c478bd9Sstevel@tonic-gate */
2457c478bd9Sstevel@tonic-gate
2467c478bd9Sstevel@tonic-gate for (i = 0; value[i] != '\0'; i++) {
2477c478bd9Sstevel@tonic-gate if (value[i] == ' ') {
2487c478bd9Sstevel@tonic-gate if ((++n_spaces % gran) == 0) {
2497c478bd9Sstevel@tonic-gate value[i] = '\n';
2507c478bd9Sstevel@tonic-gate if (max_lines != -1 && --max_lines == 0) {
2517c478bd9Sstevel@tonic-gate value[i] = '\0';
2527c478bd9Sstevel@tonic-gate break;
2537c478bd9Sstevel@tonic-gate }
2547c478bd9Sstevel@tonic-gate }
2557c478bd9Sstevel@tonic-gate }
2567c478bd9Sstevel@tonic-gate }
2577c478bd9Sstevel@tonic-gate
2587c478bd9Sstevel@tonic-gate (void) printf("%s\n", value);
2597c478bd9Sstevel@tonic-gate
2607c478bd9Sstevel@tonic-gate return (DHCP_EXIT_SUCCESS);
2617c478bd9Sstevel@tonic-gate }
262