1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include "defs.h"
28 #include "tables.h"
29 
30 static void	print_opt(struct nd_opt_hdr *opt, int len);
31 
32 void
print_route_sol(char * str,struct phyint * pi,struct nd_router_solicit * rs,int len,struct sockaddr_in6 * addr)33 print_route_sol(char *str, struct phyint *pi,
34     struct nd_router_solicit *rs, int len, struct sockaddr_in6 *addr)
35 {
36 	struct nd_opt_hdr *opt;
37 	char abuf[INET6_ADDRSTRLEN];
38 
39 	logmsg(LOG_DEBUG, "%s %s (%d bytes) on %s\n", str,
40 	    inet_ntop(addr->sin6_family, (void *)&addr->sin6_addr,
41 	    abuf, sizeof (abuf)),
42 	    len, pi->pi_name);
43 
44 	len -= sizeof (*rs);
45 	opt = (struct nd_opt_hdr *)&rs[1];
46 	print_opt(opt, len);
47 }
48 
49 void
print_route_adv(char * str,struct phyint * pi,struct nd_router_advert * ra,int len,struct sockaddr_in6 * addr)50 print_route_adv(char *str, struct phyint *pi,
51     struct nd_router_advert *ra, int len, struct sockaddr_in6 *addr)
52 {
53 	struct nd_opt_hdr *opt;
54 	char abuf[INET6_ADDRSTRLEN];
55 
56 	logmsg(LOG_DEBUG, "%s %s (%d bytes) on %s\n", str,
57 	    inet_ntop(addr->sin6_family, (void *)&addr->sin6_addr,
58 	    abuf, sizeof (abuf)),
59 	    len, pi->pi_name);
60 	logmsg(LOG_DEBUG, "\tMax hop limit: %u\n", ra->nd_ra_curhoplimit);
61 	logmsg(LOG_DEBUG, "\tManaged address configuration: %s\n",
62 	    (ra->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED) ?
63 	    "Set" : "Not set");
64 	logmsg(LOG_DEBUG, "\tOther configuration flag: %s\n",
65 	    (ra->nd_ra_flags_reserved & ND_RA_FLAG_OTHER) ?
66 	    "Set" : "Not set");
67 	logmsg(LOG_DEBUG, "\tRouter lifetime: %u\n",
68 	    ntohs(ra->nd_ra_router_lifetime));
69 	logmsg(LOG_DEBUG, "\tReachable timer: %u\n",
70 	    ntohl(ra->nd_ra_reachable));
71 	logmsg(LOG_DEBUG, "\tReachable retrans timer: %u\n",
72 	    ntohl(ra->nd_ra_retransmit));
73 
74 	len -= sizeof (*ra);
75 	opt = (struct nd_opt_hdr *)&ra[1];
76 	print_opt(opt, len);
77 }
78 
79 static void
print_opt(struct nd_opt_hdr * opt,int len)80 print_opt(struct nd_opt_hdr *opt, int len)
81 {
82 	struct nd_opt_prefix_info *po;
83 	struct nd_opt_mtu *mo;
84 	struct nd_opt_lla *lo;
85 	int optlen;
86 	char abuf[INET6_ADDRSTRLEN];
87 	char llabuf[BUFSIZ];
88 
89 	while (len >= sizeof (struct nd_opt_hdr)) {
90 		optlen = opt->nd_opt_len * 8;
91 		if (optlen == 0) {
92 			logmsg(LOG_DEBUG, "Zero length option!\n");
93 			break;
94 		}
95 		switch (opt->nd_opt_type) {
96 		case ND_OPT_PREFIX_INFORMATION:
97 			po = (struct nd_opt_prefix_info *)opt;
98 			if (optlen != sizeof (*po) ||
99 			    optlen > len)
100 				break;
101 
102 			logmsg(LOG_DEBUG, "\tPrefix: %s/%u\n",
103 			    inet_ntop(AF_INET6, (void *)&po->nd_opt_pi_prefix,
104 			    abuf, sizeof (abuf)),
105 			    po->nd_opt_pi_prefix_len);
106 			logmsg(LOG_DEBUG, "\t\tOn link flag:%s\n",
107 			    (po->nd_opt_pi_flags_reserved &
108 			    ND_OPT_PI_FLAG_ONLINK) ?
109 			    "Set" : "Not set");
110 			logmsg(LOG_DEBUG, "\t\tAuto addrconf flag:%s\n",
111 			    (po->nd_opt_pi_flags_reserved &
112 			    ND_OPT_PI_FLAG_AUTO) ?
113 			    "Set" : "Not set");
114 			logmsg(LOG_DEBUG, "\t\tValid time: %u\n",
115 			    ntohl(po->nd_opt_pi_valid_time));
116 			logmsg(LOG_DEBUG, "\t\tPreferred time: %u\n",
117 			    ntohl(po->nd_opt_pi_preferred_time));
118 			break;
119 		case ND_OPT_MTU:
120 			mo = (struct nd_opt_mtu *)opt;
121 			if (optlen != sizeof (*mo) ||
122 			    optlen > len)
123 				break;
124 			logmsg(LOG_DEBUG, "\tMTU: %d\n",
125 			    ntohl(mo->nd_opt_mtu_mtu));
126 			break;
127 		case ND_OPT_SOURCE_LINKADDR:
128 			lo = (struct nd_opt_lla *)opt;
129 			if (optlen < 8 ||
130 			    optlen > len)
131 				break;
132 			(void) fmt_lla(llabuf, sizeof (llabuf),
133 			    lo->nd_opt_lla_hdw_addr,
134 			    optlen - sizeof (nd_opt_hdr_t));
135 			logmsg(LOG_DEBUG, "\tSource LLA: len %d <%s>\n",
136 			    optlen - sizeof (nd_opt_hdr_t),
137 			    llabuf);
138 			break;
139 		case ND_OPT_TARGET_LINKADDR:
140 			lo = (struct nd_opt_lla *)opt;
141 			if (optlen < 8||
142 			    optlen > len)
143 				break;
144 			(void) fmt_lla(llabuf, sizeof (llabuf),
145 			    lo->nd_opt_lla_hdw_addr,
146 			    optlen - sizeof (nd_opt_hdr_t));
147 			logmsg(LOG_DEBUG, "\tTarget LLA: len %d <%s>\n",
148 			    optlen - sizeof (nd_opt_hdr_t),
149 			    llabuf);
150 			break;
151 		case ND_OPT_REDIRECTED_HEADER:
152 			logmsg(LOG_DEBUG, "\tRedirected header option!\n");
153 			break;
154 		default:
155 			logmsg(LOG_DEBUG, "Unknown option %d (0x%x)\n",
156 			    opt->nd_opt_type, opt->nd_opt_type);
157 			break;
158 		}
159 		opt = (struct nd_opt_hdr *)((char *)opt + optlen);
160 		len -= optlen;
161 	}
162 }
163 
164 char *
fmt_lla(char * llabuf,int bufsize,uchar_t * lla,int llalen)165 fmt_lla(char *llabuf, int bufsize, uchar_t *lla, int llalen)
166 {
167 	int i;
168 	char *cp = llabuf;
169 
170 	for (i = 0; i < llalen; i++) {
171 		if (i == llalen - 1) /* Last byte? */
172 			(void) snprintf(cp, bufsize, "%02x", lla[i] & 0xFF);
173 		else
174 			(void) snprintf(cp, bufsize, "%02x:", lla[i] & 0xFF);
175 		bufsize -= strlen(cp);
176 		cp += strlen(cp);
177 	}
178 	return (llabuf);
179 }
180