Thu Jan 24 17:44:59 2013 UTC ()
make it static const


(christos)
diff -r1.31 -r1.32 src/usr.sbin/rtadvd/config.c
cvs diff -r1.31 -r1.32 src/usr.sbin/rtadvd/config.c (switch to unified diff)

--- src/usr.sbin/rtadvd/config.c 2012/12/14 09:48:31 1.31
+++ src/usr.sbin/rtadvd/config.c 2013/01/24 17:44:59 1.32
@@ -1,1325 +1,1325 @@ @@ -1,1325 +1,1325 @@
1/* $NetBSD: config.c,v 1.31 2012/12/14 09:48:31 roy Exp $ */ 1/* $NetBSD: config.c,v 1.32 2013/01/24 17:44:59 christos Exp $ */
2/* $KAME: config.c,v 1.93 2005/10/17 14:40:02 suz Exp $ */ 2/* $KAME: config.c,v 1.93 2005/10/17 14:40:02 suz Exp $ */
3 3
4/* 4/*
5 * Copyright (C) 1998 WIDE Project. 5 * Copyright (C) 1998 WIDE Project.
6 * All rights reserved. 6 * All rights reserved.
7 *  7 *
8 * Redistribution and use in source and binary forms, with or without 8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions 9 * modification, are permitted provided that the following conditions
10 * are met: 10 * are met:
11 * 1. Redistributions of source code must retain the above copyright 11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer. 12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors 16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software 17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission. 18 * without specific prior written permission.
19 *  19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE. 30 * SUCH DAMAGE.
31 */ 31 */
32 32
33#include <sys/param.h> 33#include <sys/param.h>
34#include <sys/ioctl.h> 34#include <sys/ioctl.h>
35#include <sys/socket.h> 35#include <sys/socket.h>
36#include <sys/time.h> 36#include <sys/time.h>
37#include <sys/sysctl.h> 37#include <sys/sysctl.h>
38 38
39#include <net/if.h> 39#include <net/if.h>
40#include <net/route.h> 40#include <net/route.h>
41#include <net/if_dl.h> 41#include <net/if_dl.h>
42#ifdef __FreeBSD__ 42#ifdef __FreeBSD__
43#include <net/if_var.h> 43#include <net/if_var.h>
44#endif 44#endif
45 45
46#include <netinet/in.h> 46#include <netinet/in.h>
47#include <netinet/in_var.h> 47#include <netinet/in_var.h>
48#include <netinet/ip6.h> 48#include <netinet/ip6.h>
49#include <netinet6/ip6_var.h> 49#include <netinet6/ip6_var.h>
50#include <netinet/icmp6.h> 50#include <netinet/icmp6.h>
51#include <netinet6/nd6.h> 51#include <netinet6/nd6.h>
52 52
53#include <arpa/inet.h> 53#include <arpa/inet.h>
54 54
55#include <stdio.h> 55#include <stdio.h>
56#include <syslog.h> 56#include <syslog.h>
57#include <errno.h> 57#include <errno.h>
58#include <string.h> 58#include <string.h>
59#include <stdlib.h> 59#include <stdlib.h>
60#include <search.h> 60#include <search.h>
61#include <unistd.h> 61#include <unistd.h>
62#include <ifaddrs.h> 62#include <ifaddrs.h>
63#include <inttypes.h> 63#include <inttypes.h>
64 64
65#include "rtadvd.h" 65#include "rtadvd.h"
66#include "advcap.h" 66#include "advcap.h"
67#include "timer.h" 67#include "timer.h"
68#include "if.h" 68#include "if.h"
69#include "config.h" 69#include "config.h"
70 70
71#ifndef __arraycount 71#ifndef __arraycount
72#define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 72#define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
73#endif 73#endif
74 74
75static time_t prefix_timo = (60 * 120); /* 2 hours. 75static time_t prefix_timo = (60 * 120); /* 2 hours.
76 * XXX: should be configurable. */ 76 * XXX: should be configurable. */
77static struct rtadvd_timer *prefix_timeout(void *); 77static struct rtadvd_timer *prefix_timeout(void *);
78static void makeentry(char *, size_t, int, const char *); 78static void makeentry(char *, size_t, int, const char *);
79static int getinet6sysctl(int); 79static int getinet6sysctl(int);
80 80
81static size_t 81static size_t
82encode_domain(char *dst, const char *src) 82encode_domain(char *dst, const char *src)
83{ 83{
84 ssize_t len; 84 ssize_t len;
85 char *odst, *p; 85 char *odst, *p;
86 86
87 odst = dst; 87 odst = dst;
88 while (src && (len = strlen(src)) != 0) { 88 while (src && (len = strlen(src)) != 0) {
89 p = strchr(src, '.'); 89 p = strchr(src, '.');
90 *dst++ = len = MIN(63, p == NULL ? len : p - src); 90 *dst++ = len = MIN(63, p == NULL ? len : p - src);
91 memcpy(dst, src, len); 91 memcpy(dst, src, len);
92 dst += len; 92 dst += len;
93 if (p == NULL) 93 if (p == NULL)
94 break; 94 break;
95 src = p + 1; 95 src = p + 1;
96 } 96 }
97 *dst++ = '\0'; 97 *dst++ = '\0';
98  98
99 return dst - odst; 99 return dst - odst;
100} 100}
101 101
102void 102void
103free_rainfo(struct rainfo *rai) 103free_rainfo(struct rainfo *rai)
104{ 104{
105 struct prefix *pfx; 105 struct prefix *pfx;
106 struct rtinfo *rti; 106 struct rtinfo *rti;
107 struct rdnss *rdnss; 107 struct rdnss *rdnss;
108 struct rdnss_addr *rdnsa; 108 struct rdnss_addr *rdnsa;
109 struct dnssl *dnssl; 109 struct dnssl *dnssl;
110 struct dnssl_domain *dnsd; 110 struct dnssl_domain *dnsd;
111 111
112 rtadvd_remove_timer(&rai->timer); 112 rtadvd_remove_timer(&rai->timer);
113 113
114 while ((pfx = TAILQ_FIRST(&rai->prefix))) { 114 while ((pfx = TAILQ_FIRST(&rai->prefix))) {
115 TAILQ_REMOVE(&rai->prefix, pfx, next); 115 TAILQ_REMOVE(&rai->prefix, pfx, next);
116 free(pfx); 116 free(pfx);
117 } 117 }
118 118
119 while ((rti = TAILQ_FIRST(&rai->route))) { 119 while ((rti = TAILQ_FIRST(&rai->route))) {
120 TAILQ_REMOVE(&rai->route, rti, next); 120 TAILQ_REMOVE(&rai->route, rti, next);
121 free(rti); 121 free(rti);
122 } 122 }
123 123
124 while ((rdnss = TAILQ_FIRST(&rai->rdnss))) { 124 while ((rdnss = TAILQ_FIRST(&rai->rdnss))) {
125 TAILQ_REMOVE(&rai->rdnss, rdnss, next); 125 TAILQ_REMOVE(&rai->rdnss, rdnss, next);
126 while ((rdnsa = TAILQ_FIRST(&rdnss->list))) { 126 while ((rdnsa = TAILQ_FIRST(&rdnss->list))) {
127 TAILQ_REMOVE(&rdnss->list, rdnsa, next); 127 TAILQ_REMOVE(&rdnss->list, rdnsa, next);
128 free(rdnsa); 128 free(rdnsa);
129 } 129 }
130 free(rdnss); 130 free(rdnss);
131 } 131 }
132 132
133 while ((dnssl = TAILQ_FIRST(&rai->dnssl))) { 133 while ((dnssl = TAILQ_FIRST(&rai->dnssl))) {
134 TAILQ_REMOVE(&rai->dnssl, dnssl, next); 134 TAILQ_REMOVE(&rai->dnssl, dnssl, next);
135 while ((dnsd = TAILQ_FIRST(&dnssl->list))) { 135 while ((dnsd = TAILQ_FIRST(&dnssl->list))) {
136 TAILQ_REMOVE(&dnssl->list, dnsd, next); 136 TAILQ_REMOVE(&dnssl->list, dnsd, next);
137 free(dnsd); 137 free(dnsd);
138 } 138 }
139 free(dnssl); 139 free(dnssl);
140 } 140 }
141 141
142 free(rai->sdl); 142 free(rai->sdl);
143 free(rai->ra_data); 143 free(rai->ra_data);
144 free(rai); 144 free(rai);
145} 145}
146 146
147void 147void
148getconfig(const char *intface, int exithard) 148getconfig(const char *intface, int exithard)
149{ 149{
150 int stat, c, i; 150 int stat, c, i;
151 char tbuf[BUFSIZ]; 151 char tbuf[BUFSIZ];
152 struct rainfo *tmp, *rai; 152 struct rainfo *tmp, *rai;
153 int32_t val; 153 int32_t val;
154 int64_t val64; 154 int64_t val64;
155 char buf[BUFSIZ]; 155 char buf[BUFSIZ];
156 char *bp = buf; 156 char *bp = buf;
157 char *addr, *flagstr, *ap; 157 char *addr, *flagstr, *ap;
158 static int forwarding = -1; 158 static int forwarding = -1;
159 char entbuf[256], abuf[256]; 159 char entbuf[256], abuf[256];
160 struct rdnss *rdnss; 160 struct rdnss *rdnss;
161 struct dnssl *dnssl; 161 struct dnssl *dnssl;
162 162
163#define MUSTHAVE(var, cap) \ 163#define MUSTHAVE(var, cap) \
164 do { \ 164 do { \
165 int64_t t; \ 165 int64_t t; \
166 if ((t = agetnum(cap)) < 0) { \ 166 if ((t = agetnum(cap)) < 0) { \
167 fprintf(stderr, "rtadvd: need %s for interface %s\n", \ 167 fprintf(stderr, "rtadvd: need %s for interface %s\n", \
168 cap, intface); \ 168 cap, intface); \
169 goto errexit; \ 169 goto errexit; \
170 } \ 170 } \
171 var = t; \ 171 var = t; \
172 } while (0) 172 } while (0)
173#define MAYHAVE(var, cap, def) \ 173#define MAYHAVE(var, cap, def) \
174 do { \ 174 do { \
175 if ((var = agetnum(cap)) < 0) \ 175 if ((var = agetnum(cap)) < 0) \
176 var = def; \ 176 var = def; \
177 } while (0) 177 } while (0)
178#define ELM_MALLOC(p) \ 178#define ELM_MALLOC(p) \
179 do { \ 179 do { \
180 p = calloc(1, sizeof(*p)); \ 180 p = calloc(1, sizeof(*p)); \
181 if (p == NULL) { \ 181 if (p == NULL) { \
182 syslog(LOG_ERR, "<%s> calloc failed: %m", \ 182 syslog(LOG_ERR, "<%s> calloc failed: %m", \
183 __func__); \ 183 __func__); \
184 goto errexit; \ 184 goto errexit; \
185 } \ 185 } \
186 } while(/*CONSTCOND*/0) 186 } while(/*CONSTCOND*/0)
187 187
188 if (if_nametoindex(intface) == 0) { 188 if (if_nametoindex(intface) == 0) {
189 syslog(LOG_INFO, "<%s> interface %s not found, ignoring", 189 syslog(LOG_INFO, "<%s> interface %s not found, ignoring",
190 __func__, intface); 190 __func__, intface);
191 return; 191 return;
192 } 192 }
193 193
194 syslog(LOG_DEBUG, "<%s> loading configuration for interface %s", 194 syslog(LOG_DEBUG, "<%s> loading configuration for interface %s",
195 __func__, intface); 195 __func__, intface);
196 196
197 if ((stat = agetent(tbuf, intface)) <= 0) { 197 if ((stat = agetent(tbuf, intface)) <= 0) {
198 memset(tbuf, 0, sizeof(tbuf)); 198 memset(tbuf, 0, sizeof(tbuf));
199 syslog(LOG_INFO, 199 syslog(LOG_INFO,
200 "<%s> %s isn't defined in the configuration file" 200 "<%s> %s isn't defined in the configuration file"
201 " or the configuration file doesn't exist." 201 " or the configuration file doesn't exist."
202 " Treat it as default", 202 " Treat it as default",
203 __func__, intface); 203 __func__, intface);
204 } 204 }
205 205
206 ELM_MALLOC(tmp); 206 ELM_MALLOC(tmp);
207 TAILQ_INIT(&tmp->prefix); 207 TAILQ_INIT(&tmp->prefix);
208 TAILQ_INIT(&tmp->route); 208 TAILQ_INIT(&tmp->route);
209 TAILQ_INIT(&tmp->rdnss); 209 TAILQ_INIT(&tmp->rdnss);
210 TAILQ_INIT(&tmp->dnssl); 210 TAILQ_INIT(&tmp->dnssl);
211 211
212 /* check if we are allowed to forward packets (if not determined) */ 212 /* check if we are allowed to forward packets (if not determined) */
213 if (forwarding < 0) { 213 if (forwarding < 0) {
214 if ((forwarding = getinet6sysctl(IPV6CTL_FORWARDING)) < 0) 214 if ((forwarding = getinet6sysctl(IPV6CTL_FORWARDING)) < 0)
215 exit(1); 215 exit(1);
216 } 216 }
217 217
218 /* get interface information */ 218 /* get interface information */
219 if (agetflag("nolladdr")) 219 if (agetflag("nolladdr"))
220 tmp->advlinkopt = 0; 220 tmp->advlinkopt = 0;
221 else 221 else
222 tmp->advlinkopt = 1; 222 tmp->advlinkopt = 1;
223 if (tmp->advlinkopt) { 223 if (tmp->advlinkopt) {
224 if ((tmp->sdl = if_nametosdl(intface)) == NULL) { 224 if ((tmp->sdl = if_nametosdl(intface)) == NULL) {
225 syslog(LOG_ERR, 225 syslog(LOG_ERR,
226 "<%s> can't get information of %s", 226 "<%s> can't get information of %s",
227 __func__, intface); 227 __func__, intface);
228 goto errexit; 228 goto errexit;
229 } 229 }
230 tmp->ifindex = tmp->sdl->sdl_index; 230 tmp->ifindex = tmp->sdl->sdl_index;
231 } else { 231 } else {
232 tmp->ifindex = if_nametoindex(intface); 232 tmp->ifindex = if_nametoindex(intface);
233 if (tmp->ifindex == 0) { 233 if (tmp->ifindex == 0) {
234 syslog(LOG_ERR, 234 syslog(LOG_ERR,
235 "<%s> can't get information of %s", 235 "<%s> can't get information of %s",
236 __func__, intface); 236 __func__, intface);
237 goto errexit; 237 goto errexit;
238 } 238 }
239 } 239 }
240 tmp->ifflags = if_getflags(tmp->ifindex, 0); 240 tmp->ifflags = if_getflags(tmp->ifindex, 0);
241 strlcpy(tmp->ifname, intface, sizeof(tmp->ifname)); 241 strlcpy(tmp->ifname, intface, sizeof(tmp->ifname));
242 if ((tmp->phymtu = if_getmtu(intface)) == 0) { 242 if ((tmp->phymtu = if_getmtu(intface)) == 0) {
243 tmp->phymtu = IPV6_MMTU; 243 tmp->phymtu = IPV6_MMTU;
244 syslog(LOG_WARNING, 244 syslog(LOG_WARNING,
245 "<%s> can't get interface mtu of %s. Treat as %d", 245 "<%s> can't get interface mtu of %s. Treat as %d",
246 __func__, intface, IPV6_MMTU); 246 __func__, intface, IPV6_MMTU);
247 } 247 }
248 248
249 /* 249 /*
250 * set router configuration variables. 250 * set router configuration variables.
251 */ 251 */
252 MAYHAVE(val, "maxinterval", DEF_MAXRTRADVINTERVAL); 252 MAYHAVE(val, "maxinterval", DEF_MAXRTRADVINTERVAL);
253 if (val < MIN_MAXINTERVAL || val > MAX_MAXINTERVAL) { 253 if (val < MIN_MAXINTERVAL || val > MAX_MAXINTERVAL) {
254 syslog(LOG_ERR, 254 syslog(LOG_ERR,
255 "<%s> maxinterval (%d) on %s is invalid " 255 "<%s> maxinterval (%d) on %s is invalid "
256 "(must be between %u and %u)", __func__, val, 256 "(must be between %u and %u)", __func__, val,
257 intface, MIN_MAXINTERVAL, MAX_MAXINTERVAL); 257 intface, MIN_MAXINTERVAL, MAX_MAXINTERVAL);
258 goto errexit; 258 goto errexit;
259 } 259 }
260 tmp->maxinterval = val; 260 tmp->maxinterval = val;
261 MAYHAVE(val, "mininterval", tmp->maxinterval/3); 261 MAYHAVE(val, "mininterval", tmp->maxinterval/3);
262 if (val < MIN_MININTERVAL || val > (tmp->maxinterval * 3) / 4) { 262 if (val < MIN_MININTERVAL || val > (tmp->maxinterval * 3) / 4) {
263 syslog(LOG_ERR, 263 syslog(LOG_ERR,
264 "<%s> mininterval (%d) on %s is invalid " 264 "<%s> mininterval (%d) on %s is invalid "
265 "(must be between %u and %d)", 265 "(must be between %u and %d)",
266 __func__, val, intface, MIN_MININTERVAL, 266 __func__, val, intface, MIN_MININTERVAL,
267 (tmp->maxinterval * 3) / 4); 267 (tmp->maxinterval * 3) / 4);
268 goto errexit; 268 goto errexit;
269 } 269 }
270 tmp->mininterval = val; 270 tmp->mininterval = val;
271 271
272 MAYHAVE(val, "chlim", DEF_ADVCURHOPLIMIT); 272 MAYHAVE(val, "chlim", DEF_ADVCURHOPLIMIT);
273 tmp->hoplimit = val & 0xff; 273 tmp->hoplimit = val & 0xff;
274 274
275 if ((flagstr = (char *)agetstr("raflags", &bp))) { 275 if ((flagstr = (char *)agetstr("raflags", &bp))) {
276 val = 0; 276 val = 0;
277 if (strchr(flagstr, 'm')) 277 if (strchr(flagstr, 'm'))
278 val |= ND_RA_FLAG_MANAGED; 278 val |= ND_RA_FLAG_MANAGED;
279 if (strchr(flagstr, 'o')) 279 if (strchr(flagstr, 'o'))
280 val |= ND_RA_FLAG_OTHER; 280 val |= ND_RA_FLAG_OTHER;
281 if (strchr(flagstr, 'h')) 281 if (strchr(flagstr, 'h'))
282 val |= ND_RA_FLAG_RTPREF_HIGH; 282 val |= ND_RA_FLAG_RTPREF_HIGH;
283 if (strchr(flagstr, 'l')) { 283 if (strchr(flagstr, 'l')) {
284 if ((val & ND_RA_FLAG_RTPREF_HIGH)) { 284 if ((val & ND_RA_FLAG_RTPREF_HIGH)) {
285 syslog(LOG_ERR, "<%s> the \'h\' and \'l\'" 285 syslog(LOG_ERR, "<%s> the \'h\' and \'l\'"
286 " router flags are exclusive", __func__); 286 " router flags are exclusive", __func__);
287 goto errexit; 287 goto errexit;
288 } 288 }
289 val |= ND_RA_FLAG_RTPREF_LOW; 289 val |= ND_RA_FLAG_RTPREF_LOW;
290 } 290 }
291 } else { 291 } else {
292 MAYHAVE(val, "raflags", 0); 292 MAYHAVE(val, "raflags", 0);
293 } 293 }
294 tmp->managedflg = val & ND_RA_FLAG_MANAGED; 294 tmp->managedflg = val & ND_RA_FLAG_MANAGED;
295 tmp->otherflg = val & ND_RA_FLAG_OTHER; 295 tmp->otherflg = val & ND_RA_FLAG_OTHER;
296#ifndef ND_RA_FLAG_RTPREF_MASK 296#ifndef ND_RA_FLAG_RTPREF_MASK
297#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 297#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
298#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 298#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
299#endif 299#endif
300 tmp->rtpref = val & ND_RA_FLAG_RTPREF_MASK; 300 tmp->rtpref = val & ND_RA_FLAG_RTPREF_MASK;
301 if (tmp->rtpref == ND_RA_FLAG_RTPREF_RSV) { 301 if (tmp->rtpref == ND_RA_FLAG_RTPREF_RSV) {
302 syslog(LOG_ERR, "<%s> invalid router preference (%02x) on %s", 302 syslog(LOG_ERR, "<%s> invalid router preference (%02x) on %s",
303 __func__, tmp->rtpref, intface); 303 __func__, tmp->rtpref, intface);
304 goto errexit; 304 goto errexit;
305 } 305 }
306 306
307 MAYHAVE(val, "rltime", tmp->maxinterval * 3); 307 MAYHAVE(val, "rltime", tmp->maxinterval * 3);
308 if (val && (val < tmp->maxinterval || val > MAXROUTERLIFETIME)) { 308 if (val && (val < tmp->maxinterval || val > MAXROUTERLIFETIME)) {
309 syslog(LOG_ERR, 309 syslog(LOG_ERR,
310 "<%s> router lifetime (%d) on %s is invalid " 310 "<%s> router lifetime (%d) on %s is invalid "
311 "(must be 0 or between %d and %d)", 311 "(must be 0 or between %d and %d)",
312 __func__, val, intface, 312 __func__, val, intface,
313 tmp->maxinterval, MAXROUTERLIFETIME); 313 tmp->maxinterval, MAXROUTERLIFETIME);
314 goto errexit; 314 goto errexit;
315 } 315 }
316 /* 316 /*
317 * Basically, hosts MUST NOT send Router Advertisement messages at any 317 * Basically, hosts MUST NOT send Router Advertisement messages at any
318 * time (RFC 2461, Section 6.2.3). However, it would sometimes be 318 * time (RFC 2461, Section 6.2.3). However, it would sometimes be
319 * useful to allow hosts to advertise some parameters such as prefix 319 * useful to allow hosts to advertise some parameters such as prefix
320 * information and link MTU. Thus, we allow hosts to invoke rtadvd 320 * information and link MTU. Thus, we allow hosts to invoke rtadvd
321 * only when router lifetime (on every advertising interface) is 321 * only when router lifetime (on every advertising interface) is
322 * explicitly set zero. (see also the above section) 322 * explicitly set zero. (see also the above section)
323 */ 323 */
324 if (val && forwarding == 0) { 324 if (val && forwarding == 0) {
325 syslog(LOG_ERR, 325 syslog(LOG_ERR,
326 "<%s> non zero router lifetime is specified for %s, " 326 "<%s> non zero router lifetime is specified for %s, "
327 "which must not be allowed for hosts. you must " 327 "which must not be allowed for hosts. you must "
328 "change router lifetime or enable IPv6 forwarding.", 328 "change router lifetime or enable IPv6 forwarding.",
329 __func__, intface); 329 __func__, intface);
330 goto errexit; 330 goto errexit;
331 } 331 }
332 tmp->lifetime = val & 0xffff; 332 tmp->lifetime = val & 0xffff;
333 333
334 MAYHAVE(val, "rtime", DEF_ADVREACHABLETIME); 334 MAYHAVE(val, "rtime", DEF_ADVREACHABLETIME);
335 if (val < 0 || val > MAXREACHABLETIME) { 335 if (val < 0 || val > MAXREACHABLETIME) {
336 syslog(LOG_ERR, 336 syslog(LOG_ERR,
337 "<%s> reachable time (%d) on %s is invalid " 337 "<%s> reachable time (%d) on %s is invalid "
338 "(must be no greater than %d)", 338 "(must be no greater than %d)",
339 __func__, val, intface, MAXREACHABLETIME); 339 __func__, val, intface, MAXREACHABLETIME);
340 goto errexit; 340 goto errexit;
341 } 341 }
342 tmp->reachabletime = (uint32_t)val; 342 tmp->reachabletime = (uint32_t)val;
343 343
344 MAYHAVE(val64, "retrans", DEF_ADVRETRANSTIMER); 344 MAYHAVE(val64, "retrans", DEF_ADVRETRANSTIMER);
345 if (val64 < 0 || val64 > 0xffffffff) { 345 if (val64 < 0 || val64 > 0xffffffff) {
346 syslog(LOG_ERR, "<%s> retrans time (%lld) on %s out of range", 346 syslog(LOG_ERR, "<%s> retrans time (%lld) on %s out of range",
347 __func__, (long long)val64, intface); 347 __func__, (long long)val64, intface);
348 goto errexit; 348 goto errexit;
349 } 349 }
350 tmp->retranstimer = (uint32_t)val64; 350 tmp->retranstimer = (uint32_t)val64;
351 351
352 if (agetnum("hapref") != -1 || agetnum("hatime") != -1) { 352 if (agetnum("hapref") != -1 || agetnum("hatime") != -1) {
353 syslog(LOG_ERR, 353 syslog(LOG_ERR,
354 "<%s> mobile-ip6 configuration not supported", 354 "<%s> mobile-ip6 configuration not supported",
355 __func__); 355 __func__);
356 goto errexit; 356 goto errexit;
357 } 357 }
358 /* prefix information */ 358 /* prefix information */
359 359
360 /* 360 /*
361 * This is an implementation specific parameter to consider 361 * This is an implementation specific parameter to consider
362 * link propagation delays and poorly synchronized clocks when 362 * link propagation delays and poorly synchronized clocks when
363 * checking consistency of advertised lifetimes. 363 * checking consistency of advertised lifetimes.
364 */ 364 */
365 MAYHAVE(val, "clockskew", 0); 365 MAYHAVE(val, "clockskew", 0);
366 tmp->clockskew = val; 366 tmp->clockskew = val;
367 367
368 tmp->pfxs = 0; 368 tmp->pfxs = 0;
369 for (i = -1; i < MAXPREFIX; i++) { 369 for (i = -1; i < MAXPREFIX; i++) {
370 struct prefix *pfx; 370 struct prefix *pfx;
371 371
372 makeentry(entbuf, sizeof(entbuf), i, "addr"); 372 makeentry(entbuf, sizeof(entbuf), i, "addr");
373 addr = (char *)agetstr(entbuf, &bp); 373 addr = (char *)agetstr(entbuf, &bp);
374 if (addr == NULL) 374 if (addr == NULL)
375 continue; 375 continue;
376 376
377 /* allocate memory to store prefix information */ 377 /* allocate memory to store prefix information */
378 if ((pfx = calloc(1, sizeof(*pfx))) == NULL) { 378 if ((pfx = calloc(1, sizeof(*pfx))) == NULL) {
379 syslog(LOG_ERR, 379 syslog(LOG_ERR,
380 "<%s> can't allocate memory: %m", 380 "<%s> can't allocate memory: %m",
381 __func__); 381 __func__);
382 goto errexit; 382 goto errexit;
383 } 383 }
384 384
385 TAILQ_INSERT_TAIL(&tmp->prefix, pfx, next); 385 TAILQ_INSERT_TAIL(&tmp->prefix, pfx, next);
386 tmp->pfxs++; 386 tmp->pfxs++;
387 pfx->rainfo = tmp; 387 pfx->rainfo = tmp;
388 388
389 pfx->origin = PREFIX_FROM_CONFIG; 389 pfx->origin = PREFIX_FROM_CONFIG;
390 390
391 if (inet_pton(AF_INET6, addr, &pfx->prefix) != 1) { 391 if (inet_pton(AF_INET6, addr, &pfx->prefix) != 1) {
392 syslog(LOG_ERR, 392 syslog(LOG_ERR,
393 "<%s> inet_pton failed for %s", 393 "<%s> inet_pton failed for %s",
394 __func__, addr); 394 __func__, addr);
395 goto errexit; 395 goto errexit;
396 } 396 }
397 if (IN6_IS_ADDR_MULTICAST(&pfx->prefix)) { 397 if (IN6_IS_ADDR_MULTICAST(&pfx->prefix)) {
398 syslog(LOG_ERR, 398 syslog(LOG_ERR,
399 "<%s> multicast prefix (%s) must " 399 "<%s> multicast prefix (%s) must "
400 "not be advertised on %s", 400 "not be advertised on %s",
401 __func__, addr, intface); 401 __func__, addr, intface);
402 goto errexit; 402 goto errexit;
403 } 403 }
404 if (IN6_IS_ADDR_LINKLOCAL(&pfx->prefix)) 404 if (IN6_IS_ADDR_LINKLOCAL(&pfx->prefix))
405 syslog(LOG_NOTICE, 405 syslog(LOG_NOTICE,
406 "<%s> link-local prefix (%s) will be" 406 "<%s> link-local prefix (%s) will be"
407 " advertised on %s", 407 " advertised on %s",
408 __func__, addr, intface); 408 __func__, addr, intface);
409 409
410 makeentry(entbuf, sizeof(entbuf), i, "prefixlen"); 410 makeentry(entbuf, sizeof(entbuf), i, "prefixlen");
411 MAYHAVE(val, entbuf, 64); 411 MAYHAVE(val, entbuf, 64);
412 if (val < 0 || val > 128) { 412 if (val < 0 || val > 128) {
413 syslog(LOG_ERR, "<%s> prefixlen (%d) for %s " 413 syslog(LOG_ERR, "<%s> prefixlen (%d) for %s "
414 "on %s out of range", 414 "on %s out of range",
415 __func__, val, addr, intface); 415 __func__, val, addr, intface);
416 goto errexit; 416 goto errexit;
417 } 417 }
418 pfx->prefixlen = (int)val; 418 pfx->prefixlen = (int)val;
419 419
420 makeentry(entbuf, sizeof(entbuf), i, "pinfoflags"); 420 makeentry(entbuf, sizeof(entbuf), i, "pinfoflags");
421 if ((flagstr = (char *)agetstr(entbuf, &bp))) { 421 if ((flagstr = (char *)agetstr(entbuf, &bp))) {
422 val = 0; 422 val = 0;
423 if (strchr(flagstr, 'l')) 423 if (strchr(flagstr, 'l'))
424 val |= ND_OPT_PI_FLAG_ONLINK; 424 val |= ND_OPT_PI_FLAG_ONLINK;
425 if (strchr(flagstr, 'a')) 425 if (strchr(flagstr, 'a'))
426 val |= ND_OPT_PI_FLAG_AUTO; 426 val |= ND_OPT_PI_FLAG_AUTO;
427 } else { 427 } else {
428 MAYHAVE(val, entbuf, 428 MAYHAVE(val, entbuf,
429 (ND_OPT_PI_FLAG_ONLINK|ND_OPT_PI_FLAG_AUTO)); 429 (ND_OPT_PI_FLAG_ONLINK|ND_OPT_PI_FLAG_AUTO));
430 } 430 }
431 pfx->onlinkflg = val & ND_OPT_PI_FLAG_ONLINK; 431 pfx->onlinkflg = val & ND_OPT_PI_FLAG_ONLINK;
432 pfx->autoconfflg = val & ND_OPT_PI_FLAG_AUTO; 432 pfx->autoconfflg = val & ND_OPT_PI_FLAG_AUTO;
433 433
434 makeentry(entbuf, sizeof(entbuf), i, "vltime"); 434 makeentry(entbuf, sizeof(entbuf), i, "vltime");
435 MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME); 435 MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME);
436 if (val64 < 0 || val64 > 0xffffffff) { 436 if (val64 < 0 || val64 > 0xffffffff) {
437 syslog(LOG_ERR, "<%s> vltime (%lld) for " 437 syslog(LOG_ERR, "<%s> vltime (%lld) for "
438 "%s/%d on %s is out of range", 438 "%s/%d on %s is out of range",
439 __func__, (long long)val64, 439 __func__, (long long)val64,
440 addr, pfx->prefixlen, intface); 440 addr, pfx->prefixlen, intface);
441 goto errexit; 441 goto errexit;
442 } 442 }
443 pfx->validlifetime = (uint32_t)val64; 443 pfx->validlifetime = (uint32_t)val64;
444 444
445 makeentry(entbuf, sizeof(entbuf), i, "vltimedecr"); 445 makeentry(entbuf, sizeof(entbuf), i, "vltimedecr");
446 if (agetflag(entbuf)) { 446 if (agetflag(entbuf)) {
447 struct timeval now; 447 struct timeval now;
448 gettimeofday(&now, 0); 448 gettimeofday(&now, 0);
449 pfx->vltimeexpire = 449 pfx->vltimeexpire =
450 now.tv_sec + pfx->validlifetime; 450 now.tv_sec + pfx->validlifetime;
451 } 451 }
452 452
453 makeentry(entbuf, sizeof(entbuf), i, "pltime"); 453 makeentry(entbuf, sizeof(entbuf), i, "pltime");
454 MAYHAVE(val64, entbuf, DEF_ADVPREFERREDLIFETIME); 454 MAYHAVE(val64, entbuf, DEF_ADVPREFERREDLIFETIME);
455 if (val64 < 0 || val64 > 0xffffffff) { 455 if (val64 < 0 || val64 > 0xffffffff) {
456 syslog(LOG_ERR, 456 syslog(LOG_ERR,
457 "<%s> pltime (%lld) for %s/%d on %s " 457 "<%s> pltime (%lld) for %s/%d on %s "
458 "is out of range", 458 "is out of range",
459 __func__, (long long)val64, 459 __func__, (long long)val64,
460 addr, pfx->prefixlen, intface); 460 addr, pfx->prefixlen, intface);
461 goto errexit; 461 goto errexit;
462 } 462 }
463 pfx->preflifetime = (uint32_t)val64; 463 pfx->preflifetime = (uint32_t)val64;
464 464
465 makeentry(entbuf, sizeof(entbuf), i, "pltimedecr"); 465 makeentry(entbuf, sizeof(entbuf), i, "pltimedecr");
466 if (agetflag(entbuf)) { 466 if (agetflag(entbuf)) {
467 struct timeval now; 467 struct timeval now;
468 gettimeofday(&now, 0); 468 gettimeofday(&now, 0);
469 pfx->pltimeexpire = 469 pfx->pltimeexpire =
470 now.tv_sec + pfx->preflifetime; 470 now.tv_sec + pfx->preflifetime;
471 } 471 }
472 } 472 }
473 if (TAILQ_FIRST(&tmp->prefix) == NULL && !agetflag("noifprefix")) 473 if (TAILQ_FIRST(&tmp->prefix) == NULL && !agetflag("noifprefix"))
474 get_prefix(tmp); 474 get_prefix(tmp);
475 475
476 MAYHAVE(val64, "mtu", 0); 476 MAYHAVE(val64, "mtu", 0);
477 if (val64 < 0 || val64 > 0xffffffff) { 477 if (val64 < 0 || val64 > 0xffffffff) {
478 syslog(LOG_ERR, 478 syslog(LOG_ERR,
479 "<%s> mtu (%" PRIi64 ") on %s out of range", 479 "<%s> mtu (%" PRIi64 ") on %s out of range",
480 __func__, val64, intface); 480 __func__, val64, intface);
481 goto errexit; 481 goto errexit;
482 } 482 }
483 tmp->linkmtu = (uint32_t)val64; 483 tmp->linkmtu = (uint32_t)val64;
484 if (tmp->linkmtu == 0) { 484 if (tmp->linkmtu == 0) {
485 char *mtustr; 485 char *mtustr;
486 486
487 if ((mtustr = (char *)agetstr("mtu", &bp)) && 487 if ((mtustr = (char *)agetstr("mtu", &bp)) &&
488 strcmp(mtustr, "auto") == 0) 488 strcmp(mtustr, "auto") == 0)
489 tmp->linkmtu = tmp->phymtu; 489 tmp->linkmtu = tmp->phymtu;
490 } 490 }
491 else if (tmp->linkmtu < IPV6_MMTU || tmp->linkmtu > tmp->phymtu) { 491 else if (tmp->linkmtu < IPV6_MMTU || tmp->linkmtu > tmp->phymtu) {
492 syslog(LOG_ERR, 492 syslog(LOG_ERR,
493 "<%s> advertised link mtu (%d) on %s is invalid (must " 493 "<%s> advertised link mtu (%d) on %s is invalid (must "
494 "be between least MTU (%d) and physical link MTU (%d)", 494 "be between least MTU (%d) and physical link MTU (%d)",
495 __func__, tmp->linkmtu, intface, 495 __func__, tmp->linkmtu, intface,
496 IPV6_MMTU, tmp->phymtu); 496 IPV6_MMTU, tmp->phymtu);
497 goto errexit; 497 goto errexit;
498 } 498 }
499 499
500#ifdef SIOCSIFINFO_IN6 500#ifdef SIOCSIFINFO_IN6
501 { 501 {
502 struct in6_ndireq ndi; 502 struct in6_ndireq ndi;
503 int s; 503 int s;
504 504
505 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 505 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
506 syslog(LOG_ERR, "<%s> socket: %m", __func__); 506 syslog(LOG_ERR, "<%s> socket: %m", __func__);
507 goto errexit; 507 goto errexit;
508 } 508 }
509 memset(&ndi, 0, sizeof(ndi)); 509 memset(&ndi, 0, sizeof(ndi));
510 strncpy(ndi.ifname, intface, IFNAMSIZ); 510 strncpy(ndi.ifname, intface, IFNAMSIZ);
511 if (ioctl(s, SIOCGIFINFO_IN6, &ndi) < 0) { 511 if (ioctl(s, SIOCGIFINFO_IN6, &ndi) < 0) {
512 syslog(LOG_INFO, "<%s> ioctl:SIOCGIFINFO_IN6 at %s: %m", 512 syslog(LOG_INFO, "<%s> ioctl:SIOCGIFINFO_IN6 at %s: %m",
513 __func__, intface); 513 __func__, intface);
514 } 514 }
515 515
516 /* reflect the RA info to the host variables in kernel */ 516 /* reflect the RA info to the host variables in kernel */
517 ndi.ndi.chlim = tmp->hoplimit; 517 ndi.ndi.chlim = tmp->hoplimit;
518 ndi.ndi.retrans = tmp->retranstimer; 518 ndi.ndi.retrans = tmp->retranstimer;
519 ndi.ndi.basereachable = tmp->reachabletime; 519 ndi.ndi.basereachable = tmp->reachabletime;
520 if (ioctl(s, SIOCSIFINFO_IN6, &ndi) < 0) { 520 if (ioctl(s, SIOCSIFINFO_IN6, &ndi) < 0) {
521 syslog(LOG_INFO, "<%s> ioctl:SIOCSIFINFO_IN6 at %s: %m", 521 syslog(LOG_INFO, "<%s> ioctl:SIOCSIFINFO_IN6 at %s: %m",
522 __func__, intface); 522 __func__, intface);
523 } 523 }
524 close(s); 524 close(s);
525 } 525 }
526#endif 526#endif
527 527
528 /* route information */ 528 /* route information */
529 for (i = -1; i < MAXROUTE; i++) { 529 for (i = -1; i < MAXROUTE; i++) {
530 struct rtinfo *rti; 530 struct rtinfo *rti;
531 char oentbuf[256]; 531 char oentbuf[256];
532 532
533 makeentry(entbuf, sizeof(entbuf), i, "rtprefix"); 533 makeentry(entbuf, sizeof(entbuf), i, "rtprefix");
534 addr = (char *)agetstr(entbuf, &bp); 534 addr = (char *)agetstr(entbuf, &bp);
535 if (addr == NULL) { 535 if (addr == NULL) {
536 makeentry(oentbuf, sizeof(oentbuf), i, "rtrprefix"); 536 makeentry(oentbuf, sizeof(oentbuf), i, "rtrprefix");
537 addr = (char *)agetstr(oentbuf, &bp); 537 addr = (char *)agetstr(oentbuf, &bp);
538 if (addr) { 538 if (addr) {
539 fprintf(stderr, "%s was obsoleted. Use %s.\n", 539 fprintf(stderr, "%s was obsoleted. Use %s.\n",
540 oentbuf, entbuf); 540 oentbuf, entbuf);
541 } 541 }
542 } 542 }
543 if (addr == NULL) 543 if (addr == NULL)
544 continue; 544 continue;
545 545
546 ELM_MALLOC(rti); 546 ELM_MALLOC(rti);
547 memset(rti, 0, sizeof(*rti)); 547 memset(rti, 0, sizeof(*rti));
548 548
549 /* link into chain */ 549 /* link into chain */
550 TAILQ_INSERT_TAIL(&tmp->route, rti, next); 550 TAILQ_INSERT_TAIL(&tmp->route, rti, next);
551 551
552 if (inet_pton(AF_INET6, addr, &rti->prefix) != 1) { 552 if (inet_pton(AF_INET6, addr, &rti->prefix) != 1) {
553 syslog(LOG_ERR, "<%s> inet_pton failed for %s", 553 syslog(LOG_ERR, "<%s> inet_pton failed for %s",
554 __func__, addr); 554 __func__, addr);
555 goto errexit; 555 goto errexit;
556 } 556 }
557#if 0 557#if 0
558 /* 558 /*
559 * XXX: currently there's no restriction in route information 559 * XXX: currently there's no restriction in route information
560 * prefix according to 560 * prefix according to
561 * draft-ietf-ipngwg-router-selection-00.txt. 561 * draft-ietf-ipngwg-router-selection-00.txt.
562 * However, I think the similar restriction be necessary. 562 * However, I think the similar restriction be necessary.
563 */ 563 */
564 MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME); 564 MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME);
565 if (IN6_IS_ADDR_MULTICAST(&rti->prefix)) { 565 if (IN6_IS_ADDR_MULTICAST(&rti->prefix)) {
566 syslog(LOG_ERR, 566 syslog(LOG_ERR,
567 "<%s> multicast route (%s) must " 567 "<%s> multicast route (%s) must "
568 "not be advertised on %s", 568 "not be advertised on %s",
569 __func__, addr, intface); 569 __func__, addr, intface);
570 goto errexit; 570 goto errexit;
571 } 571 }
572 if (IN6_IS_ADDR_LINKLOCAL(&rti->prefix)) { 572 if (IN6_IS_ADDR_LINKLOCAL(&rti->prefix)) {
573 syslog(LOG_NOTICE, 573 syslog(LOG_NOTICE,
574 "<%s> link-local route (%s) will " 574 "<%s> link-local route (%s) will "
575 "be advertised on %s", 575 "be advertised on %s",
576 __func__, addr, intface); 576 __func__, addr, intface);
577 goto errexit; 577 goto errexit;
578 } 578 }
579#endif 579#endif
580 580
581 makeentry(entbuf, sizeof(entbuf), i, "rtplen"); 581 makeentry(entbuf, sizeof(entbuf), i, "rtplen");
582 /* XXX: 256 is a magic number for compatibility check. */ 582 /* XXX: 256 is a magic number for compatibility check. */
583 MAYHAVE(val, entbuf, 256); 583 MAYHAVE(val, entbuf, 256);
584 if (val == 256) { 584 if (val == 256) {
585 makeentry(oentbuf, sizeof(oentbuf), i, "rtrplen"); 585 makeentry(oentbuf, sizeof(oentbuf), i, "rtrplen");
586 MAYHAVE(val, oentbuf, 256); 586 MAYHAVE(val, oentbuf, 256);
587 if (val != 256) { 587 if (val != 256) {
588 fprintf(stderr, "%s was obsoleted. Use %s.\n", 588 fprintf(stderr, "%s was obsoleted. Use %s.\n",
589 oentbuf, entbuf); 589 oentbuf, entbuf);
590 } else 590 } else
591 val = 64; 591 val = 64;
592 } 592 }
593 if (val < 0 || val > 128) { 593 if (val < 0 || val > 128) {
594 syslog(LOG_ERR, "<%s> prefixlen (%d) for %s on %s " 594 syslog(LOG_ERR, "<%s> prefixlen (%d) for %s on %s "
595 "out of range", 595 "out of range",
596 __func__, val, addr, intface); 596 __func__, val, addr, intface);
597 goto errexit; 597 goto errexit;
598 } 598 }
599 rti->prefixlen = (int)val; 599 rti->prefixlen = (int)val;
600 600
601 makeentry(entbuf, sizeof(entbuf), i, "rtflags"); 601 makeentry(entbuf, sizeof(entbuf), i, "rtflags");
602 if ((flagstr = (char *)agetstr(entbuf, &bp))) { 602 if ((flagstr = (char *)agetstr(entbuf, &bp))) {
603 val = 0; 603 val = 0;
604 if (strchr(flagstr, 'h')) 604 if (strchr(flagstr, 'h'))
605 val |= ND_RA_FLAG_RTPREF_HIGH; 605 val |= ND_RA_FLAG_RTPREF_HIGH;
606 if (strchr(flagstr, 'l')) { 606 if (strchr(flagstr, 'l')) {
607 if ((val & ND_RA_FLAG_RTPREF_HIGH)) { 607 if ((val & ND_RA_FLAG_RTPREF_HIGH)) {
608 syslog(LOG_ERR, 608 syslog(LOG_ERR,
609 "<%s> the \'h\' and \'l\' route" 609 "<%s> the \'h\' and \'l\' route"
610 " preferences are exclusive", 610 " preferences are exclusive",
611 __func__); 611 __func__);
612 goto errexit; 612 goto errexit;
613 } 613 }
614 val |= ND_RA_FLAG_RTPREF_LOW; 614 val |= ND_RA_FLAG_RTPREF_LOW;
615 } 615 }
616 } else 616 } else
617 MAYHAVE(val, entbuf, 256); /* XXX */ 617 MAYHAVE(val, entbuf, 256); /* XXX */
618 if (val == 256) { 618 if (val == 256) {
619 makeentry(oentbuf, sizeof(oentbuf), i, "rtrflags"); 619 makeentry(oentbuf, sizeof(oentbuf), i, "rtrflags");
620 MAYHAVE(val, oentbuf, 256); 620 MAYHAVE(val, oentbuf, 256);
621 if (val != 256) { 621 if (val != 256) {
622 fprintf(stderr, "%s was obsoleted. Use %s.\n", 622 fprintf(stderr, "%s was obsoleted. Use %s.\n",
623 oentbuf, entbuf); 623 oentbuf, entbuf);
624 } else 624 } else
625 val = 0; 625 val = 0;
626 } 626 }
627 rti->rtpref = val & ND_RA_FLAG_RTPREF_MASK; 627 rti->rtpref = val & ND_RA_FLAG_RTPREF_MASK;
628 if (rti->rtpref == ND_RA_FLAG_RTPREF_RSV) { 628 if (rti->rtpref == ND_RA_FLAG_RTPREF_RSV) {
629 syslog(LOG_ERR, "<%s> invalid route preference (%02x) " 629 syslog(LOG_ERR, "<%s> invalid route preference (%02x) "
630 "for %s/%d on %s", 630 "for %s/%d on %s",
631 __func__, rti->rtpref, addr, 631 __func__, rti->rtpref, addr,
632 rti->prefixlen, intface); 632 rti->prefixlen, intface);
633 goto errexit; 633 goto errexit;
634 } 634 }
635 635
636 /* 636 /*
637 * Since the spec does not a default value, we should make 637 * Since the spec does not a default value, we should make
638 * this entry mandatory. However, FreeBSD 4.4 has shipped 638 * this entry mandatory. However, FreeBSD 4.4 has shipped
639 * with this field being optional, we use the router lifetime 639 * with this field being optional, we use the router lifetime
640 * as an ad-hoc default value with a warning message. 640 * as an ad-hoc default value with a warning message.
641 */ 641 */
642 makeentry(entbuf, sizeof(entbuf), i, "rtltime"); 642 makeentry(entbuf, sizeof(entbuf), i, "rtltime");
643 MAYHAVE(val64, entbuf, -1); 643 MAYHAVE(val64, entbuf, -1);
644 if (val64 == -1) { 644 if (val64 == -1) {
645 makeentry(oentbuf, sizeof(oentbuf), i, "rtrltime"); 645 makeentry(oentbuf, sizeof(oentbuf), i, "rtrltime");
646 MAYHAVE(val64, oentbuf, -1); 646 MAYHAVE(val64, oentbuf, -1);
647 if (val64 != -1) { 647 if (val64 != -1) {
648 fprintf(stderr, "%s was obsoleted. Use %s.\n", 648 fprintf(stderr, "%s was obsoleted. Use %s.\n",
649 oentbuf, entbuf); 649 oentbuf, entbuf);
650 } else { 650 } else {
651 fprintf(stderr, "%s should be specified " 651 fprintf(stderr, "%s should be specified "
652 "for interface %s.\n", 652 "for interface %s.\n",
653 entbuf, intface); 653 entbuf, intface);
654 val64 = tmp->lifetime; 654 val64 = tmp->lifetime;
655 } 655 }
656 } 656 }
657 if (val64 < 0 || val64 > 0xffffffff) { 657 if (val64 < 0 || val64 > 0xffffffff) {
658 syslog(LOG_ERR, "<%s> route lifetime (%lld) for " 658 syslog(LOG_ERR, "<%s> route lifetime (%lld) for "
659 "%s/%d on %s out of range", __func__, 659 "%s/%d on %s out of range", __func__,
660 (long long)val64, addr, rti->prefixlen, intface); 660 (long long)val64, addr, rti->prefixlen, intface);
661 goto errexit; 661 goto errexit;
662 } 662 }
663 rti->ltime = (uint32_t)val64; 663 rti->ltime = (uint32_t)val64;
664 } 664 }
665 665
666 /* RDNSS */ 666 /* RDNSS */
667 for (i = -1; i < MAXRDNSS; i++) { 667 for (i = -1; i < MAXRDNSS; i++) {
668 struct rdnss_addr *rdnsa; 668 struct rdnss_addr *rdnsa;
669 669
670 makeentry(entbuf, sizeof(entbuf), i, "rdnss"); 670 makeentry(entbuf, sizeof(entbuf), i, "rdnss");
671 addr = (char *)agetstr(entbuf, &bp); 671 addr = (char *)agetstr(entbuf, &bp);
672 if (addr == NULL) 672 if (addr == NULL)
673 continue; 673 continue;
674 674
675 ELM_MALLOC(rdnss); 675 ELM_MALLOC(rdnss);
676 TAILQ_INSERT_TAIL(&tmp->rdnss, rdnss, next); 676 TAILQ_INSERT_TAIL(&tmp->rdnss, rdnss, next);
677 TAILQ_INIT(&rdnss->list); 677 TAILQ_INIT(&rdnss->list);
678 678
679 for (ap = addr; ap - addr < (ssize_t)strlen(addr); ap += c+1) { 679 for (ap = addr; ap - addr < (ssize_t)strlen(addr); ap += c+1) {
680 c = strcspn(ap, ","); 680 c = strcspn(ap, ",");
681 strncpy(abuf, ap, c); 681 strncpy(abuf, ap, c);
682 abuf[c] = '\0'; 682 abuf[c] = '\0';
683 ELM_MALLOC(rdnsa); 683 ELM_MALLOC(rdnsa);
684 TAILQ_INSERT_TAIL(&rdnss->list, rdnsa, next); 684 TAILQ_INSERT_TAIL(&rdnss->list, rdnsa, next);
685 if (inet_pton(AF_INET6, abuf, &rdnsa->addr) != 1) { 685 if (inet_pton(AF_INET6, abuf, &rdnsa->addr) != 1) {
686 syslog(LOG_ERR, "<%s> inet_pton failed for %s", 686 syslog(LOG_ERR, "<%s> inet_pton failed for %s",
687 __func__, addr); 687 __func__, addr);
688 goto errexit; 688 goto errexit;
689 } 689 }
690 } 690 }
691 691
692 makeentry(entbuf, sizeof(entbuf), i, "rdnssltime"); 692 makeentry(entbuf, sizeof(entbuf), i, "rdnssltime");
693 MAYHAVE(val64, entbuf, tmp->maxinterval * 3 / 2); 693 MAYHAVE(val64, entbuf, tmp->maxinterval * 3 / 2);
694 if (val64 < tmp->maxinterval || 694 if (val64 < tmp->maxinterval ||
695 val64 > tmp->maxinterval * 2) 695 val64 > tmp->maxinterval * 2)
696 { 696 {
697 syslog(LOG_ERR, "<%s> %s (%lld) on %s is invalid", 697 syslog(LOG_ERR, "<%s> %s (%lld) on %s is invalid",
698 __func__, entbuf, (long long)val64, intface); 698 __func__, entbuf, (long long)val64, intface);
699 goto errexit; 699 goto errexit;
700 } 700 }
701 rdnss->lifetime = (uint32_t)val64; 701 rdnss->lifetime = (uint32_t)val64;
702 702
703 } 703 }
704 704
705 /* DNSSL */ 705 /* DNSSL */
706 TAILQ_INIT(&tmp->dnssl); 706 TAILQ_INIT(&tmp->dnssl);
707 for (i = -1; i < MAXDNSSL; i++) { 707 for (i = -1; i < MAXDNSSL; i++) {
708 struct dnssl_domain *dnsd; 708 struct dnssl_domain *dnsd;
709 709
710 makeentry(entbuf, sizeof(entbuf), i, "dnssl"); 710 makeentry(entbuf, sizeof(entbuf), i, "dnssl");
711 addr = (char *)agetstr(entbuf, &bp); 711 addr = (char *)agetstr(entbuf, &bp);
712 if (addr == NULL) 712 if (addr == NULL)
713 continue; 713 continue;
714 714
715 ELM_MALLOC(dnssl); 715 ELM_MALLOC(dnssl);
716 TAILQ_INSERT_TAIL(&tmp->dnssl, dnssl, next); 716 TAILQ_INSERT_TAIL(&tmp->dnssl, dnssl, next);
717 TAILQ_INIT(&dnssl->list); 717 TAILQ_INIT(&dnssl->list);
718 718
719 for (ap = addr; ap - addr < (ssize_t)strlen(addr); ap += c+1) { 719 for (ap = addr; ap - addr < (ssize_t)strlen(addr); ap += c+1) {
720 c = strcspn(ap, ","); 720 c = strcspn(ap, ",");
721 strncpy(abuf, ap, c); 721 strncpy(abuf, ap, c);
722 abuf[c] = '\0'; 722 abuf[c] = '\0';
723 ELM_MALLOC(dnsd); 723 ELM_MALLOC(dnsd);
724 TAILQ_INSERT_TAIL(&dnssl->list, dnsd, next); 724 TAILQ_INSERT_TAIL(&dnssl->list, dnsd, next);
725 dnsd->len = encode_domain(dnsd->domain, abuf); 725 dnsd->len = encode_domain(dnsd->domain, abuf);
726 } 726 }
727 727
728 makeentry(entbuf, sizeof(entbuf), i, "dnsslltime"); 728 makeentry(entbuf, sizeof(entbuf), i, "dnsslltime");
729 MAYHAVE(val64, entbuf, tmp->maxinterval * 3 / 2); 729 MAYHAVE(val64, entbuf, tmp->maxinterval * 3 / 2);
730 if (val64 < tmp->maxinterval || 730 if (val64 < tmp->maxinterval ||
731 val64 > tmp->maxinterval * 2) 731 val64 > tmp->maxinterval * 2)
732 { 732 {
733 syslog(LOG_ERR, "<%s> %s (%lld) on %s is invalid", 733 syslog(LOG_ERR, "<%s> %s (%lld) on %s is invalid",
734 __func__, entbuf, (long long)val64, intface); 734 __func__, entbuf, (long long)val64, intface);
735 goto errexit; 735 goto errexit;
736 } 736 }
737 dnssl->lifetime = (uint32_t)val64; 737 dnssl->lifetime = (uint32_t)val64;
738 738
739 } 739 }
740 740
741 TAILQ_FOREACH(rai, &ralist, next) { 741 TAILQ_FOREACH(rai, &ralist, next) {
742 if (rai->ifindex == tmp->ifindex) { 742 if (rai->ifindex == tmp->ifindex) {
743 TAILQ_REMOVE(&ralist, rai, next); 743 TAILQ_REMOVE(&ralist, rai, next);
744 /* If we already have a leaving RA use that 744 /* If we already have a leaving RA use that
745 * as this config hasn't been advertised */ 745 * as this config hasn't been advertised */
746 if (rai->leaving) { 746 if (rai->leaving) {
747 tmp->leaving = rai->leaving; 747 tmp->leaving = rai->leaving;
748 free_rainfo(rai); 748 free_rainfo(rai);
749 rai = tmp->leaving; 749 rai = tmp->leaving;
750 rai->leaving_for = tmp; 750 rai->leaving_for = tmp;
751 break; 751 break;
752 } 752 }
753 rai->lifetime = 0; 753 rai->lifetime = 0;
754 TAILQ_FOREACH(rdnss, &rai->rdnss, next) 754 TAILQ_FOREACH(rdnss, &rai->rdnss, next)
755 rdnss->lifetime = 0; 755 rdnss->lifetime = 0;
756 TAILQ_FOREACH(dnssl, &rai->dnssl, next) 756 TAILQ_FOREACH(dnssl, &rai->dnssl, next)
757 dnssl->lifetime = 0; 757 dnssl->lifetime = 0;
758 rai->leaving_for = tmp; 758 rai->leaving_for = tmp;
759 tmp->leaving = rai; 759 tmp->leaving = rai;
760 rai->initcounter = MAX_INITIAL_RTR_ADVERTISEMENTS; 760 rai->initcounter = MAX_INITIAL_RTR_ADVERTISEMENTS;
761 rai->mininterval = MIN_DELAY_BETWEEN_RAS; 761 rai->mininterval = MIN_DELAY_BETWEEN_RAS;
762 rai->maxinterval = MIN_DELAY_BETWEEN_RAS; 762 rai->maxinterval = MIN_DELAY_BETWEEN_RAS;
763 rai->leaving_adv = MAX_FINAL_RTR_ADVERTISEMENTS; 763 rai->leaving_adv = MAX_FINAL_RTR_ADVERTISEMENTS;
764 if (rai->timer == NULL) 764 if (rai->timer == NULL)
765 rai->timer = rtadvd_add_timer(ra_timeout, 765 rai->timer = rtadvd_add_timer(ra_timeout,
766 ra_timer_update, 766 ra_timer_update,
767 rai, rai); 767 rai, rai);
768 ra_timer_update((void *)rai, &rai->timer->tm); 768 ra_timer_update((void *)rai, &rai->timer->tm);
769 rtadvd_set_timer(&rai->timer->tm, rai->timer); 769 rtadvd_set_timer(&rai->timer->tm, rai->timer);
770 break; 770 break;
771 } 771 }
772 } 772 }
773 773
774 /* okey */ 774 /* okey */
775 TAILQ_INSERT_TAIL(&ralist, tmp, next); 775 TAILQ_INSERT_TAIL(&ralist, tmp, next);
776 776
777 /* construct the sending packet */ 777 /* construct the sending packet */
778 make_packet(tmp); 778 make_packet(tmp);
779 779
780 /* set timer */ 780 /* set timer */
781 if (rai) 781 if (rai)
782 return; 782 return;
783 tmp->timer = rtadvd_add_timer(ra_timeout, ra_timer_update, 783 tmp->timer = rtadvd_add_timer(ra_timeout, ra_timer_update,
784 tmp, tmp); 784 tmp, tmp);
785 ra_timer_set_short_delay(tmp); 785 ra_timer_set_short_delay(tmp);
786 786
787 return; 787 return;
788 788
789errexit: 789errexit:
790 if (exithard) 790 if (exithard)
791 exit(1); 791 exit(1);
792 free_rainfo(tmp); 792 free_rainfo(tmp);
793} 793}
794 794
795void 795void
796get_prefix(struct rainfo *rai) 796get_prefix(struct rainfo *rai)
797{ 797{
798 struct ifaddrs *ifap, *ifa; 798 struct ifaddrs *ifap, *ifa;
799 struct prefix *pp; 799 struct prefix *pp;
800 struct in6_addr *a; 800 struct in6_addr *a;
801 unsigned char *p, *ep, *m, *lim; 801 unsigned char *p, *ep, *m, *lim;
802 char ntopbuf[INET6_ADDRSTRLEN]; 802 char ntopbuf[INET6_ADDRSTRLEN];
803 803
804 if (getifaddrs(&ifap) < 0) { 804 if (getifaddrs(&ifap) < 0) {
805 syslog(LOG_ERR, 805 syslog(LOG_ERR,
806 "<%s> can't get interface addresses", 806 "<%s> can't get interface addresses",
807 __func__); 807 __func__);
808 exit(1); 808 exit(1);
809 } 809 }
810 810
811 for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 811 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
812 int plen; 812 int plen;
813 813
814 if (strcmp(ifa->ifa_name, rai->ifname) != 0) 814 if (strcmp(ifa->ifa_name, rai->ifname) != 0)
815 continue; 815 continue;
816 if (ifa->ifa_addr->sa_family != AF_INET6) 816 if (ifa->ifa_addr->sa_family != AF_INET6)
817 continue; 817 continue;
818 a = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 818 a = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
819 if (IN6_IS_ADDR_LINKLOCAL(a)) 819 if (IN6_IS_ADDR_LINKLOCAL(a))
820 continue; 820 continue;
821 /* get prefix length */ 821 /* get prefix length */
822 m = (unsigned char *)&((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 822 m = (unsigned char *)&((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr;
823 lim = (unsigned char *)(ifa->ifa_netmask) + ifa->ifa_netmask->sa_len; 823 lim = (unsigned char *)(ifa->ifa_netmask) + ifa->ifa_netmask->sa_len;
824 plen = prefixlen(m, lim); 824 plen = prefixlen(m, lim);
825 if (plen <= 0 || plen > 128) { 825 if (plen <= 0 || plen > 128) {
826 syslog(LOG_ERR, "<%s> failed to get prefixlen " 826 syslog(LOG_ERR, "<%s> failed to get prefixlen "
827 "or prefix is invalid", 827 "or prefix is invalid",
828 __func__); 828 __func__);
829 exit(1); 829 exit(1);
830 } 830 }
831 if (plen == 128) /* XXX */ 831 if (plen == 128) /* XXX */
832 continue; 832 continue;
833 if (find_prefix(rai, a, plen)) { 833 if (find_prefix(rai, a, plen)) {
834 /* ignore a duplicated prefix. */ 834 /* ignore a duplicated prefix. */
835 continue; 835 continue;
836 } 836 }
837 837
838 /* allocate memory to store prefix info. */ 838 /* allocate memory to store prefix info. */
839 if ((pp = calloc(1, sizeof(*pp))) == NULL) { 839 if ((pp = calloc(1, sizeof(*pp))) == NULL) {
840 syslog(LOG_ERR, 840 syslog(LOG_ERR,
841 "<%s> can't get allocate buffer for prefix", 841 "<%s> can't get allocate buffer for prefix",
842 __func__); 842 __func__);
843 exit(1); 843 exit(1);
844 } 844 }
845 845
846 /* set prefix, sweep bits outside of prefixlen */ 846 /* set prefix, sweep bits outside of prefixlen */
847 pp->prefixlen = plen; 847 pp->prefixlen = plen;
848 memcpy(&pp->prefix, a, sizeof(*a)); 848 memcpy(&pp->prefix, a, sizeof(*a));
849 if (1) 849 if (1)
850 { 850 {
851 p = (unsigned char *)&pp->prefix; 851 p = (unsigned char *)&pp->prefix;
852 ep = (unsigned char *)(&pp->prefix + 1); 852 ep = (unsigned char *)(&pp->prefix + 1);
853 while (m < lim && p < ep) 853 while (m < lim && p < ep)
854 *p++ &= *m++; 854 *p++ &= *m++;
855 while (p < ep) 855 while (p < ep)
856 *p++ = 0x00; 856 *p++ = 0x00;
857 } 857 }
858 if (!inet_ntop(AF_INET6, &pp->prefix, ntopbuf, 858 if (!inet_ntop(AF_INET6, &pp->prefix, ntopbuf,
859 sizeof(ntopbuf))) { 859 sizeof(ntopbuf))) {
860 syslog(LOG_ERR, "<%s> inet_ntop failed", __func__); 860 syslog(LOG_ERR, "<%s> inet_ntop failed", __func__);
861 exit(1); 861 exit(1);
862 } 862 }
863 syslog(LOG_DEBUG, 863 syslog(LOG_DEBUG,
864 "<%s> add %s/%d to prefix list on %s", 864 "<%s> add %s/%d to prefix list on %s",
865 __func__, ntopbuf, pp->prefixlen, rai->ifname); 865 __func__, ntopbuf, pp->prefixlen, rai->ifname);
866 866
867 /* set other fields with protocol defaults */ 867 /* set other fields with protocol defaults */
868 pp->validlifetime = DEF_ADVVALIDLIFETIME; 868 pp->validlifetime = DEF_ADVVALIDLIFETIME;
869 pp->preflifetime = DEF_ADVPREFERREDLIFETIME; 869 pp->preflifetime = DEF_ADVPREFERREDLIFETIME;
870 pp->onlinkflg = 1; 870 pp->onlinkflg = 1;
871 pp->autoconfflg = 1; 871 pp->autoconfflg = 1;
872 pp->origin = PREFIX_FROM_KERNEL; 872 pp->origin = PREFIX_FROM_KERNEL;
873 pp->rainfo = rai; 873 pp->rainfo = rai;
874 874
875 /* link into chain */ 875 /* link into chain */
876 TAILQ_INSERT_TAIL(&rai->prefix, pp, next); 876 TAILQ_INSERT_TAIL(&rai->prefix, pp, next);
877 rai->pfxs++; 877 rai->pfxs++;
878 } 878 }
879 879
880 freeifaddrs(ifap); 880 freeifaddrs(ifap);
881} 881}
882 882
883static void 883static void
884makeentry(char *buf, size_t len, int id, const char *string) 884makeentry(char *buf, size_t len, int id, const char *string)
885{ 885{
886 886
887 if (id < 0) 887 if (id < 0)
888 strlcpy(buf, string, len); 888 strlcpy(buf, string, len);
889 else 889 else
890 snprintf(buf, len, "%s%d", string, id); 890 snprintf(buf, len, "%s%d", string, id);
891} 891}
892 892
893/* 893/*
894 * Add a prefix to the list of specified interface and reconstruct 894 * Add a prefix to the list of specified interface and reconstruct
895 * the outgoing packet. 895 * the outgoing packet.
896 * The prefix must not be in the list. 896 * The prefix must not be in the list.
897 * XXX: other parameters of the prefix(e.g. lifetime) should be 897 * XXX: other parameters of the prefix(e.g. lifetime) should be
898 * able to be specified. 898 * able to be specified.
899 */ 899 */
900static void 900static void
901add_prefix(struct rainfo *rai, struct in6_prefixreq *ipr) 901add_prefix(struct rainfo *rai, struct in6_prefixreq *ipr)
902{ 902{
903 struct prefix *prefix; 903 struct prefix *prefix;
904 char ntopbuf[INET6_ADDRSTRLEN]; 904 char ntopbuf[INET6_ADDRSTRLEN];
905 905
906 if ((prefix = calloc(1, sizeof(*prefix))) == NULL) { 906 if ((prefix = calloc(1, sizeof(*prefix))) == NULL) {
907 syslog(LOG_ERR, "<%s> memory allocation failed", 907 syslog(LOG_ERR, "<%s> memory allocation failed",
908 __func__); 908 __func__);
909 return; /* XXX: error or exit? */ 909 return; /* XXX: error or exit? */
910 } 910 }
911 prefix->prefix = ipr->ipr_prefix.sin6_addr; 911 prefix->prefix = ipr->ipr_prefix.sin6_addr;
912 prefix->prefixlen = ipr->ipr_plen; 912 prefix->prefixlen = ipr->ipr_plen;
913 prefix->validlifetime = ipr->ipr_vltime; 913 prefix->validlifetime = ipr->ipr_vltime;
914 prefix->preflifetime = ipr->ipr_pltime; 914 prefix->preflifetime = ipr->ipr_pltime;
915 prefix->onlinkflg = ipr->ipr_raf_onlink; 915 prefix->onlinkflg = ipr->ipr_raf_onlink;
916 prefix->autoconfflg = ipr->ipr_raf_auto; 916 prefix->autoconfflg = ipr->ipr_raf_auto;
917 prefix->origin = PREFIX_FROM_DYNAMIC; 917 prefix->origin = PREFIX_FROM_DYNAMIC;
918 918
919 prefix->rainfo = rai; 919 prefix->rainfo = rai;
920 TAILQ_INSERT_TAIL(&rai->prefix, prefix, next); 920 TAILQ_INSERT_TAIL(&rai->prefix, prefix, next);
921 rai->pfxs++; 921 rai->pfxs++;
922 922
923 syslog(LOG_DEBUG, "<%s> new prefix %s/%d was added on %s", 923 syslog(LOG_DEBUG, "<%s> new prefix %s/%d was added on %s",
924 __func__, inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr, 924 __func__, inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr,
925 ntopbuf, INET6_ADDRSTRLEN), 925 ntopbuf, INET6_ADDRSTRLEN),
926 ipr->ipr_plen, rai->ifname); 926 ipr->ipr_plen, rai->ifname);
927 927
928 /* free the previous packet */ 928 /* free the previous packet */
929 free(rai->ra_data); 929 free(rai->ra_data);
930 rai->ra_data = NULL; 930 rai->ra_data = NULL;
931 931
932 /* reconstruct the packet */ 932 /* reconstruct the packet */
933 make_packet(rai); 933 make_packet(rai);
934} 934}
935 935
936/* 936/*
937 * Delete a prefix to the list of specified interface and reconstruct 937 * Delete a prefix to the list of specified interface and reconstruct
938 * the outgoing packet. 938 * the outgoing packet.
939 * The prefix must be in the list. 939 * The prefix must be in the list.
940 */ 940 */
941void 941void
942delete_prefix(struct prefix *prefix) 942delete_prefix(struct prefix *prefix)
943{ 943{
944 char ntopbuf[INET6_ADDRSTRLEN]; 944 char ntopbuf[INET6_ADDRSTRLEN];
945 struct rainfo *rai = prefix->rainfo; 945 struct rainfo *rai = prefix->rainfo;
946 946
947 TAILQ_REMOVE(&rai->prefix, prefix, next); 947 TAILQ_REMOVE(&rai->prefix, prefix, next);
948 rai->pfxs--; 948 rai->pfxs--;
949 syslog(LOG_DEBUG, "<%s> prefix %s/%d was deleted on %s", 949 syslog(LOG_DEBUG, "<%s> prefix %s/%d was deleted on %s",
950 __func__, inet_ntop(AF_INET6, &prefix->prefix, 950 __func__, inet_ntop(AF_INET6, &prefix->prefix,
951 ntopbuf, INET6_ADDRSTRLEN), 951 ntopbuf, INET6_ADDRSTRLEN),
952 prefix->prefixlen, rai->ifname); 952 prefix->prefixlen, rai->ifname);
953 rtadvd_remove_timer(&prefix->timer); 953 rtadvd_remove_timer(&prefix->timer);
954 free(prefix); 954 free(prefix);
955} 955}
956 956
957void 957void
958invalidate_prefix(struct prefix *prefix) 958invalidate_prefix(struct prefix *prefix)
959{ 959{
960 char ntopbuf[INET6_ADDRSTRLEN]; 960 char ntopbuf[INET6_ADDRSTRLEN];
961 struct timeval timo; 961 struct timeval timo;
962 struct rainfo *rai = prefix->rainfo; 962 struct rainfo *rai = prefix->rainfo;
963 963
964 if (prefix->timer) { /* sanity check */ 964 if (prefix->timer) { /* sanity check */
965 syslog(LOG_ERR, 965 syslog(LOG_ERR,
966 "<%s> assumption failure: timer already exists", 966 "<%s> assumption failure: timer already exists",
967 __func__); 967 __func__);
968 exit(1); 968 exit(1);
969 } 969 }
970 970
971 syslog(LOG_DEBUG, "<%s> prefix %s/%d was invalidated on %s, " 971 syslog(LOG_DEBUG, "<%s> prefix %s/%d was invalidated on %s, "
972 "will expire in %ld seconds", __func__, 972 "will expire in %ld seconds", __func__,
973 inet_ntop(AF_INET6, &prefix->prefix, ntopbuf, INET6_ADDRSTRLEN), 973 inet_ntop(AF_INET6, &prefix->prefix, ntopbuf, INET6_ADDRSTRLEN),
974 prefix->prefixlen, rai->ifname, (long)prefix_timo); 974 prefix->prefixlen, rai->ifname, (long)prefix_timo);
975 975
976 /* set the expiration timer */ 976 /* set the expiration timer */
977 prefix->timer = rtadvd_add_timer(prefix_timeout, NULL, prefix, NULL); 977 prefix->timer = rtadvd_add_timer(prefix_timeout, NULL, prefix, NULL);
978 if (prefix->timer == NULL) { 978 if (prefix->timer == NULL) {
979 syslog(LOG_ERR, "<%s> failed to add a timer for a prefix. " 979 syslog(LOG_ERR, "<%s> failed to add a timer for a prefix. "
980 "remove the prefix", __func__); 980 "remove the prefix", __func__);
981 delete_prefix(prefix); 981 delete_prefix(prefix);
982 } 982 }
983 timo.tv_sec = prefix_timo; 983 timo.tv_sec = prefix_timo;
984 timo.tv_usec = 0; 984 timo.tv_usec = 0;
985 rtadvd_set_timer(&timo, prefix->timer); 985 rtadvd_set_timer(&timo, prefix->timer);
986} 986}
987 987
988static struct rtadvd_timer * 988static struct rtadvd_timer *
989prefix_timeout(void *arg) 989prefix_timeout(void *arg)
990{ 990{
991 struct prefix *prefix = (struct prefix *)arg; 991 struct prefix *prefix = (struct prefix *)arg;
992 992
993 delete_prefix(prefix); 993 delete_prefix(prefix);
994 994
995 return(NULL); 995 return(NULL);
996} 996}
997 997
998void 998void
999update_prefix(struct prefix * prefix) 999update_prefix(struct prefix * prefix)
1000{ 1000{
1001 char ntopbuf[INET6_ADDRSTRLEN]; 1001 char ntopbuf[INET6_ADDRSTRLEN];
1002 struct rainfo *rai = prefix->rainfo; 1002 struct rainfo *rai = prefix->rainfo;
1003 1003
1004 if (prefix->timer == NULL) { /* sanity check */ 1004 if (prefix->timer == NULL) { /* sanity check */
1005 syslog(LOG_ERR, 1005 syslog(LOG_ERR,
1006 "<%s> assumption failure: timer does not exist", 1006 "<%s> assumption failure: timer does not exist",
1007 __func__); 1007 __func__);
1008 exit(1); 1008 exit(1);
1009 } 1009 }
1010 1010
1011 syslog(LOG_DEBUG, "<%s> prefix %s/%d was re-enabled on %s", 1011 syslog(LOG_DEBUG, "<%s> prefix %s/%d was re-enabled on %s",
1012 __func__, inet_ntop(AF_INET6, &prefix->prefix, ntopbuf, 1012 __func__, inet_ntop(AF_INET6, &prefix->prefix, ntopbuf,
1013 INET6_ADDRSTRLEN), prefix->prefixlen, rai->ifname); 1013 INET6_ADDRSTRLEN), prefix->prefixlen, rai->ifname);
1014 1014
1015 /* stop the expiration timer */ 1015 /* stop the expiration timer */
1016 rtadvd_remove_timer(&prefix->timer); 1016 rtadvd_remove_timer(&prefix->timer);
1017} 1017}
1018 1018
1019/* 1019/*
1020 * Try to get an in6_prefixreq contents for a prefix which matches 1020 * Try to get an in6_prefixreq contents for a prefix which matches
1021 * ipr->ipr_prefix and ipr->ipr_plen and belongs to 1021 * ipr->ipr_prefix and ipr->ipr_plen and belongs to
1022 * the interface whose name is ipr->ipr_name[]. 1022 * the interface whose name is ipr->ipr_name[].
1023 */ 1023 */
1024static int 1024static int
1025init_prefix(struct in6_prefixreq *ipr) 1025init_prefix(struct in6_prefixreq *ipr)
1026{ 1026{
1027#if 0 1027#if 0
1028 int s; 1028 int s;
1029 1029
1030 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { 1030 if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
1031 syslog(LOG_ERR, "<%s> socket: %m", __func__); 1031 syslog(LOG_ERR, "<%s> socket: %m", __func__);
1032 exit(1); 1032 exit(1);
1033 } 1033 }
1034 1034
1035 if (ioctl(s, SIOCGIFPREFIX_IN6, ipr) < 0) { 1035 if (ioctl(s, SIOCGIFPREFIX_IN6, ipr) < 0) {
1036 syslog(LOG_INFO, "<%s> ioctl:SIOCGIFPREFIX: %m", __func__); 1036 syslog(LOG_INFO, "<%s> ioctl:SIOCGIFPREFIX: %m", __func__);
1037 1037
1038 ipr->ipr_vltime = DEF_ADVVALIDLIFETIME; 1038 ipr->ipr_vltime = DEF_ADVVALIDLIFETIME;
1039 ipr->ipr_pltime = DEF_ADVPREFERREDLIFETIME; 1039 ipr->ipr_pltime = DEF_ADVPREFERREDLIFETIME;
1040 ipr->ipr_raf_onlink = 1; 1040 ipr->ipr_raf_onlink = 1;
1041 ipr->ipr_raf_auto = 1; 1041 ipr->ipr_raf_auto = 1;
1042 /* omit other field initialization */ 1042 /* omit other field initialization */
1043 } 1043 }
1044 else if (ipr->ipr_origin < PR_ORIG_RR) { 1044 else if (ipr->ipr_origin < PR_ORIG_RR) {
1045 char ntopbuf[INET6_ADDRSTRLEN]; 1045 char ntopbuf[INET6_ADDRSTRLEN];
1046 1046
1047 syslog(LOG_WARNING, "<%s> Added prefix(%s)'s origin %d is" 1047 syslog(LOG_WARNING, "<%s> Added prefix(%s)'s origin %d is"
1048 "lower than PR_ORIG_RR(router renumbering)." 1048 "lower than PR_ORIG_RR(router renumbering)."
1049 "This should not happen if I am router", __func__, 1049 "This should not happen if I am router", __func__,
1050 inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr, ntopbuf, 1050 inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr, ntopbuf,
1051 sizeof(ntopbuf)), ipr->ipr_origin); 1051 sizeof(ntopbuf)), ipr->ipr_origin);
1052 close(s); 1052 close(s);
1053 return 1; 1053 return 1;
1054 } 1054 }
1055 1055
1056 close(s); 1056 close(s);
1057 return 0; 1057 return 0;
1058#else 1058#else
1059 ipr->ipr_vltime = DEF_ADVVALIDLIFETIME; 1059 ipr->ipr_vltime = DEF_ADVVALIDLIFETIME;
1060 ipr->ipr_pltime = DEF_ADVPREFERREDLIFETIME; 1060 ipr->ipr_pltime = DEF_ADVPREFERREDLIFETIME;
1061 ipr->ipr_raf_onlink = 1; 1061 ipr->ipr_raf_onlink = 1;
1062 ipr->ipr_raf_auto = 1; 1062 ipr->ipr_raf_auto = 1;
1063 return 0; 1063 return 0;
1064#endif 1064#endif
1065} 1065}
1066 1066
1067void 1067void
1068make_prefix(struct rainfo *rai, int ifindex, struct in6_addr *addr, int plen) 1068make_prefix(struct rainfo *rai, int ifindex, struct in6_addr *addr, int plen)
1069{ 1069{
1070 struct in6_prefixreq ipr; 1070 struct in6_prefixreq ipr;
1071 1071
1072 memset(&ipr, 0, sizeof(ipr)); 1072 memset(&ipr, 0, sizeof(ipr));
1073 if (if_indextoname(ifindex, ipr.ipr_name) == NULL) { 1073 if (if_indextoname(ifindex, ipr.ipr_name) == NULL) {
1074 syslog(LOG_ERR, "<%s> Prefix added interface No.%d doesn't" 1074 syslog(LOG_ERR, "<%s> Prefix added interface No.%d doesn't"
1075 "exist. This should not happen: %m", __func__, 1075 "exist. This should not happen: %m", __func__,
1076 ifindex); 1076 ifindex);
1077 exit(1); 1077 exit(1);
1078 } 1078 }
1079 ipr.ipr_prefix.sin6_len = sizeof(ipr.ipr_prefix); 1079 ipr.ipr_prefix.sin6_len = sizeof(ipr.ipr_prefix);
1080 ipr.ipr_prefix.sin6_family = AF_INET6; 1080 ipr.ipr_prefix.sin6_family = AF_INET6;
1081 ipr.ipr_prefix.sin6_addr = *addr; 1081 ipr.ipr_prefix.sin6_addr = *addr;
1082 ipr.ipr_plen = plen; 1082 ipr.ipr_plen = plen;
1083 1083
1084 if (init_prefix(&ipr)) 1084 if (init_prefix(&ipr))
1085 return; /* init failed by some error */ 1085 return; /* init failed by some error */
1086 add_prefix(rai, &ipr); 1086 add_prefix(rai, &ipr);
1087} 1087}
1088 1088
1089void 1089void
1090make_packet(struct rainfo *rainfo) 1090make_packet(struct rainfo *rainfo)
1091{ 1091{
1092 size_t packlen, lladdroptlen = 0; 1092 size_t packlen, lladdroptlen = 0;
1093 char *buf; 1093 char *buf;
1094 struct nd_router_advert *ra; 1094 struct nd_router_advert *ra;
1095 struct nd_opt_prefix_info *ndopt_pi; 1095 struct nd_opt_prefix_info *ndopt_pi;
1096 struct nd_opt_mtu *ndopt_mtu; 1096 struct nd_opt_mtu *ndopt_mtu;
1097 struct prefix *pfx; 1097 struct prefix *pfx;
1098 struct nd_opt_route_info *ndopt_rti; 1098 struct nd_opt_route_info *ndopt_rti;
1099 struct rtinfo *rti; 1099 struct rtinfo *rti;
1100 struct nd_opt_rdnss *ndopt_rdnss; 1100 struct nd_opt_rdnss *ndopt_rdnss;
1101 struct rdnss *rdns; 1101 struct rdnss *rdns;
1102 struct rdnss_addr *rdnsa; 1102 struct rdnss_addr *rdnsa;
1103 struct nd_opt_dnssl *ndopt_dnssl; 1103 struct nd_opt_dnssl *ndopt_dnssl;
1104 struct dnssl *dnsl; 1104 struct dnssl *dnsl;
1105 struct dnssl_domain *dnsd; 1105 struct dnssl_domain *dnsd;
1106 size_t len, plen; 1106 size_t len, plen;
1107 1107
1108 /* calculate total length */ 1108 /* calculate total length */
1109 packlen = sizeof(struct nd_router_advert); 1109 packlen = sizeof(struct nd_router_advert);
1110 if (rainfo->advlinkopt) { 1110 if (rainfo->advlinkopt) {
1111 if ((lladdroptlen = lladdropt_length(rainfo->sdl)) == 0) { 1111 if ((lladdroptlen = lladdropt_length(rainfo->sdl)) == 0) {
1112 syslog(LOG_INFO, 1112 syslog(LOG_INFO,
1113 "<%s> link-layer address option has" 1113 "<%s> link-layer address option has"
1114 " null length on %s. Treat as not included.", 1114 " null length on %s. Treat as not included.",
1115 __func__, rainfo->ifname); 1115 __func__, rainfo->ifname);
1116 rainfo->advlinkopt = 0; 1116 rainfo->advlinkopt = 0;
1117 } 1117 }
1118 packlen += lladdroptlen; 1118 packlen += lladdroptlen;
1119 } 1119 }
1120 if (TAILQ_FIRST(&rainfo->prefix) != NULL) 1120 if (TAILQ_FIRST(&rainfo->prefix) != NULL)
1121 packlen += sizeof(struct nd_opt_prefix_info) * rainfo->pfxs; 1121 packlen += sizeof(struct nd_opt_prefix_info) * rainfo->pfxs;
1122 if (rainfo->linkmtu) 1122 if (rainfo->linkmtu)
1123 packlen += sizeof(struct nd_opt_mtu); 1123 packlen += sizeof(struct nd_opt_mtu);
1124 TAILQ_FOREACH(rti, &rainfo->route, next)  1124 TAILQ_FOREACH(rti, &rainfo->route, next)
1125 packlen += sizeof(struct nd_opt_route_info) +  1125 packlen += sizeof(struct nd_opt_route_info) +
1126 ((rti->prefixlen + 0x3f) >> 6) * 8; 1126 ((rti->prefixlen + 0x3f) >> 6) * 8;
1127 1127
1128 TAILQ_FOREACH(rdns, &rainfo->rdnss, next) { 1128 TAILQ_FOREACH(rdns, &rainfo->rdnss, next) {
1129 packlen += sizeof(struct nd_opt_rdnss); 1129 packlen += sizeof(struct nd_opt_rdnss);
1130 TAILQ_FOREACH(rdnsa, &rdns->list, next) 1130 TAILQ_FOREACH(rdnsa, &rdns->list, next)
1131 packlen += sizeof(rdnsa->addr); 1131 packlen += sizeof(rdnsa->addr);
1132 } 1132 }
1133 TAILQ_FOREACH(dnsl, &rainfo->dnssl, next) { 1133 TAILQ_FOREACH(dnsl, &rainfo->dnssl, next) {
1134 packlen += sizeof(struct nd_opt_dnssl); 1134 packlen += sizeof(struct nd_opt_dnssl);
1135 len = 0; 1135 len = 0;
1136 TAILQ_FOREACH(dnsd, &dnsl->list, next) 1136 TAILQ_FOREACH(dnsd, &dnsl->list, next)
1137 len += dnsd->len; 1137 len += dnsd->len;
1138 len += len % 8 ? 8 - len % 8 : 0; 1138 len += len % 8 ? 8 - len % 8 : 0;
1139 packlen += len; 1139 packlen += len;
1140 } 1140 }
1141 1141
1142 /* allocate memory for the packet */ 1142 /* allocate memory for the packet */
1143 if ((buf = realloc(rainfo->ra_data, packlen)) == NULL) { 1143 if ((buf = realloc(rainfo->ra_data, packlen)) == NULL) {
1144 syslog(LOG_ERR, 1144 syslog(LOG_ERR,
1145 "<%s> can't get enough memory for an RA packet %m", 1145 "<%s> can't get enough memory for an RA packet %m",
1146 __func__); 1146 __func__);
1147 exit(1); 1147 exit(1);
1148 } 1148 }
1149 rainfo->ra_data = buf; 1149 rainfo->ra_data = buf;
1150 /* XXX: what if packlen > 576? */ 1150 /* XXX: what if packlen > 576? */
1151 rainfo->ra_datalen = packlen; 1151 rainfo->ra_datalen = packlen;
1152#define CHECKLEN(size) \ 1152#define CHECKLEN(size) \
1153 do { \ 1153 do { \
1154 if (buf + size > rainfo->ra_data + packlen) { \ 1154 if (buf + size > rainfo->ra_data + packlen) { \
1155 syslog(LOG_ERR, \ 1155 syslog(LOG_ERR, \
1156 "<%s, %d> RA packet does not fit in %zu",\ 1156 "<%s, %d> RA packet does not fit in %zu",\
1157 __func__, __LINE__, packlen); \ 1157 __func__, __LINE__, packlen); \
1158 exit(1); \ 1158 exit(1); \
1159 } \ 1159 } \
1160 } while (/*CONSTCOND*/0) 1160 } while (/*CONSTCOND*/0)
1161 /* 1161 /*
1162 * construct the packet 1162 * construct the packet
1163 */ 1163 */
1164 CHECKLEN(sizeof(*ra)); 1164 CHECKLEN(sizeof(*ra));
1165 ra = (struct nd_router_advert *)buf; 1165 ra = (struct nd_router_advert *)buf;
1166 ra->nd_ra_type = ND_ROUTER_ADVERT; 1166 ra->nd_ra_type = ND_ROUTER_ADVERT;
1167 ra->nd_ra_code = 0; 1167 ra->nd_ra_code = 0;
1168 ra->nd_ra_cksum = 0; 1168 ra->nd_ra_cksum = 0;
1169 ra->nd_ra_curhoplimit = (uint8_t)(0xff & rainfo->hoplimit); 1169 ra->nd_ra_curhoplimit = (uint8_t)(0xff & rainfo->hoplimit);
1170 ra->nd_ra_flags_reserved = 0; /* just in case */ 1170 ra->nd_ra_flags_reserved = 0; /* just in case */
1171 /* 1171 /*
1172 * XXX: the router preference field, which is a 2-bit field, should be 1172 * XXX: the router preference field, which is a 2-bit field, should be
1173 * initialized before other fields. 1173 * initialized before other fields.
1174 */ 1174 */
1175 ra->nd_ra_flags_reserved = 0xff & rainfo->rtpref; 1175 ra->nd_ra_flags_reserved = 0xff & rainfo->rtpref;
1176 ra->nd_ra_flags_reserved |= 1176 ra->nd_ra_flags_reserved |=
1177 rainfo->managedflg ? ND_RA_FLAG_MANAGED : 0; 1177 rainfo->managedflg ? ND_RA_FLAG_MANAGED : 0;
1178 ra->nd_ra_flags_reserved |= 1178 ra->nd_ra_flags_reserved |=
1179 rainfo->otherflg ? ND_RA_FLAG_OTHER : 0; 1179 rainfo->otherflg ? ND_RA_FLAG_OTHER : 0;
1180 ra->nd_ra_router_lifetime = htons(rainfo->lifetime); 1180 ra->nd_ra_router_lifetime = htons(rainfo->lifetime);
1181 ra->nd_ra_reachable = htonl(rainfo->reachabletime); 1181 ra->nd_ra_reachable = htonl(rainfo->reachabletime);
1182 ra->nd_ra_retransmit = htonl(rainfo->retranstimer); 1182 ra->nd_ra_retransmit = htonl(rainfo->retranstimer);
1183 buf += sizeof(*ra); 1183 buf += sizeof(*ra);
1184 1184
1185 if (rainfo->advlinkopt) { 1185 if (rainfo->advlinkopt) {
1186 CHECKLEN(sizeof(struct nd_opt_hdr)); 1186 CHECKLEN(sizeof(struct nd_opt_hdr));
1187 lladdropt_fill(rainfo->sdl, (struct nd_opt_hdr *)buf); 1187 lladdropt_fill(rainfo->sdl, (struct nd_opt_hdr *)buf);
1188 buf += lladdroptlen; 1188 buf += lladdroptlen;
1189 } 1189 }
1190 1190
1191 if (rainfo->linkmtu) { 1191 if (rainfo->linkmtu) {
1192 CHECKLEN(sizeof(*ndopt_mtu)); 1192 CHECKLEN(sizeof(*ndopt_mtu));
1193 ndopt_mtu = (struct nd_opt_mtu *)buf; 1193 ndopt_mtu = (struct nd_opt_mtu *)buf;
1194 ndopt_mtu->nd_opt_mtu_type = ND_OPT_MTU; 1194 ndopt_mtu->nd_opt_mtu_type = ND_OPT_MTU;
1195 ndopt_mtu->nd_opt_mtu_len = 1; 1195 ndopt_mtu->nd_opt_mtu_len = 1;
1196 ndopt_mtu->nd_opt_mtu_reserved = 0; 1196 ndopt_mtu->nd_opt_mtu_reserved = 0;
1197 ndopt_mtu->nd_opt_mtu_mtu = htonl(rainfo->linkmtu); 1197 ndopt_mtu->nd_opt_mtu_mtu = htonl(rainfo->linkmtu);
1198 buf += sizeof(struct nd_opt_mtu); 1198 buf += sizeof(struct nd_opt_mtu);
1199 } 1199 }
1200 1200
1201 TAILQ_FOREACH(pfx, &rainfo->prefix, next) {  1201 TAILQ_FOREACH(pfx, &rainfo->prefix, next) {
1202 uint32_t vltime, pltime; 1202 uint32_t vltime, pltime;
1203 struct timeval now; 1203 struct timeval now;
1204 1204
1205 CHECKLEN(sizeof(*ndopt_pi)); 1205 CHECKLEN(sizeof(*ndopt_pi));
1206 ndopt_pi = (struct nd_opt_prefix_info *)buf; 1206 ndopt_pi = (struct nd_opt_prefix_info *)buf;
1207 ndopt_pi->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION; 1207 ndopt_pi->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION;
1208 ndopt_pi->nd_opt_pi_len = 4; 1208 ndopt_pi->nd_opt_pi_len = 4;
1209 ndopt_pi->nd_opt_pi_prefix_len = pfx->prefixlen; 1209 ndopt_pi->nd_opt_pi_prefix_len = pfx->prefixlen;
1210 ndopt_pi->nd_opt_pi_flags_reserved = 0; 1210 ndopt_pi->nd_opt_pi_flags_reserved = 0;
1211 if (pfx->onlinkflg) 1211 if (pfx->onlinkflg)
1212 ndopt_pi->nd_opt_pi_flags_reserved |= 1212 ndopt_pi->nd_opt_pi_flags_reserved |=
1213 ND_OPT_PI_FLAG_ONLINK; 1213 ND_OPT_PI_FLAG_ONLINK;
1214 if (pfx->autoconfflg) 1214 if (pfx->autoconfflg)
1215 ndopt_pi->nd_opt_pi_flags_reserved |= 1215 ndopt_pi->nd_opt_pi_flags_reserved |=
1216 ND_OPT_PI_FLAG_AUTO; 1216 ND_OPT_PI_FLAG_AUTO;
1217 if (pfx->timer) 1217 if (pfx->timer)
1218 vltime = 0; 1218 vltime = 0;
1219 else { 1219 else {
1220 if (pfx->vltimeexpire || pfx->pltimeexpire) 1220 if (pfx->vltimeexpire || pfx->pltimeexpire)
1221 gettimeofday(&now, NULL); 1221 gettimeofday(&now, NULL);
1222 if (pfx->vltimeexpire == 0) 1222 if (pfx->vltimeexpire == 0)
1223 vltime = pfx->validlifetime; 1223 vltime = pfx->validlifetime;
1224 else 1224 else
1225 vltime = (pfx->vltimeexpire > now.tv_sec) ? 1225 vltime = (pfx->vltimeexpire > now.tv_sec) ?
1226 pfx->vltimeexpire - now.tv_sec : 0; 1226 pfx->vltimeexpire - now.tv_sec : 0;
1227 } 1227 }
1228 if (pfx->timer) 1228 if (pfx->timer)
1229 pltime = 0; 1229 pltime = 0;
1230 else { 1230 else {
1231 if (pfx->pltimeexpire == 0) 1231 if (pfx->pltimeexpire == 0)
1232 pltime = pfx->preflifetime; 1232 pltime = pfx->preflifetime;
1233 else 1233 else
1234 pltime = (pfx->pltimeexpire > now.tv_sec) ?  1234 pltime = (pfx->pltimeexpire > now.tv_sec) ?
1235 pfx->pltimeexpire - now.tv_sec : 0; 1235 pfx->pltimeexpire - now.tv_sec : 0;
1236 } 1236 }
1237 if (vltime < pltime) { 1237 if (vltime < pltime) {
1238 /* 1238 /*
1239 * this can happen if vltime is decrement but pltime 1239 * this can happen if vltime is decrement but pltime
1240 * is not. 1240 * is not.
1241 */ 1241 */
1242 pltime = vltime; 1242 pltime = vltime;
1243 } 1243 }
1244 ndopt_pi->nd_opt_pi_valid_time = htonl(vltime); 1244 ndopt_pi->nd_opt_pi_valid_time = htonl(vltime);
1245 ndopt_pi->nd_opt_pi_preferred_time = htonl(pltime); 1245 ndopt_pi->nd_opt_pi_preferred_time = htonl(pltime);
1246 ndopt_pi->nd_opt_pi_reserved2 = 0; 1246 ndopt_pi->nd_opt_pi_reserved2 = 0;
1247 ndopt_pi->nd_opt_pi_prefix = pfx->prefix; 1247 ndopt_pi->nd_opt_pi_prefix = pfx->prefix;
1248 1248
1249 buf += sizeof(struct nd_opt_prefix_info); 1249 buf += sizeof(struct nd_opt_prefix_info);
1250 } 1250 }
1251 1251
1252 TAILQ_FOREACH(rti, &rainfo->route, next) { 1252 TAILQ_FOREACH(rti, &rainfo->route, next) {
1253 uint8_t psize = (rti->prefixlen + 0x3f) >> 6; 1253 uint8_t psize = (rti->prefixlen + 0x3f) >> 6;
1254 1254
1255 CHECKLEN(sizeof(*ndopt_rti)); 1255 CHECKLEN(sizeof(*ndopt_rti));
1256 ndopt_rti = (struct nd_opt_route_info *)buf; 1256 ndopt_rti = (struct nd_opt_route_info *)buf;
1257 ndopt_rti->nd_opt_rti_type = ND_OPT_ROUTE_INFO; 1257 ndopt_rti->nd_opt_rti_type = ND_OPT_ROUTE_INFO;
1258 ndopt_rti->nd_opt_rti_len = 1 + psize; 1258 ndopt_rti->nd_opt_rti_len = 1 + psize;
1259 ndopt_rti->nd_opt_rti_prefixlen = rti->prefixlen; 1259 ndopt_rti->nd_opt_rti_prefixlen = rti->prefixlen;
1260 ndopt_rti->nd_opt_rti_flags = 0xff & rti->rtpref; 1260 ndopt_rti->nd_opt_rti_flags = 0xff & rti->rtpref;
1261 ndopt_rti->nd_opt_rti_lifetime = htonl(rti->ltime); 1261 ndopt_rti->nd_opt_rti_lifetime = htonl(rti->ltime);
1262 memcpy(ndopt_rti + 1, &rti->prefix, psize * 8); 1262 memcpy(ndopt_rti + 1, &rti->prefix, psize * 8);
1263 buf += sizeof(struct nd_opt_route_info) + psize * 8; 1263 buf += sizeof(struct nd_opt_route_info) + psize * 8;
1264 } 1264 }
1265 1265
1266 TAILQ_FOREACH(rdns, &rainfo->rdnss, next) { 1266 TAILQ_FOREACH(rdns, &rainfo->rdnss, next) {
1267 CHECKLEN(sizeof(*ndopt_rdnss)); 1267 CHECKLEN(sizeof(*ndopt_rdnss));
1268 ndopt_rdnss = (struct nd_opt_rdnss *)buf; 1268 ndopt_rdnss = (struct nd_opt_rdnss *)buf;
1269 ndopt_rdnss->nd_opt_rdnss_type = ND_OPT_RDNSS; 1269 ndopt_rdnss->nd_opt_rdnss_type = ND_OPT_RDNSS;
1270 ndopt_rdnss->nd_opt_rdnss_len = 1; 1270 ndopt_rdnss->nd_opt_rdnss_len = 1;
1271 ndopt_rdnss->nd_opt_rdnss_reserved = 0; 1271 ndopt_rdnss->nd_opt_rdnss_reserved = 0;
1272 ndopt_rdnss->nd_opt_rdnss_lifetime = htonl(rdns->lifetime); 1272 ndopt_rdnss->nd_opt_rdnss_lifetime = htonl(rdns->lifetime);
1273 buf += sizeof(*ndopt_rdnss); 1273 buf += sizeof(*ndopt_rdnss);
1274  1274
1275 TAILQ_FOREACH(rdnsa, &rdns->list, next) { 1275 TAILQ_FOREACH(rdnsa, &rdns->list, next) {
1276 CHECKLEN(sizeof(rdnsa->addr)); 1276 CHECKLEN(sizeof(rdnsa->addr));
1277 memcpy(buf, &rdnsa->addr, sizeof(rdnsa->addr)); 1277 memcpy(buf, &rdnsa->addr, sizeof(rdnsa->addr));
1278 ndopt_rdnss->nd_opt_rdnss_len += 2; 1278 ndopt_rdnss->nd_opt_rdnss_len += 2;
1279 buf += sizeof(rdnsa->addr); 1279 buf += sizeof(rdnsa->addr);
1280 } 1280 }
1281 } 1281 }
1282 1282
1283 TAILQ_FOREACH(dnsl, &rainfo->dnssl, next) { 1283 TAILQ_FOREACH(dnsl, &rainfo->dnssl, next) {
1284 CHECKLEN(sizeof(*ndopt_dnssl)); 1284 CHECKLEN(sizeof(*ndopt_dnssl));
1285 ndopt_dnssl = (struct nd_opt_dnssl *)buf; 1285 ndopt_dnssl = (struct nd_opt_dnssl *)buf;
1286 ndopt_dnssl->nd_opt_dnssl_type = ND_OPT_DNSSL; 1286 ndopt_dnssl->nd_opt_dnssl_type = ND_OPT_DNSSL;
1287 ndopt_dnssl->nd_opt_dnssl_len = 0; 1287 ndopt_dnssl->nd_opt_dnssl_len = 0;
1288 ndopt_dnssl->nd_opt_dnssl_reserved = 0; 1288 ndopt_dnssl->nd_opt_dnssl_reserved = 0;
1289 ndopt_dnssl->nd_opt_dnssl_lifetime = htonl(dnsl->lifetime); 1289 ndopt_dnssl->nd_opt_dnssl_lifetime = htonl(dnsl->lifetime);
1290 buf += sizeof(*ndopt_dnssl); 1290 buf += sizeof(*ndopt_dnssl);
1291  1291
1292 TAILQ_FOREACH(dnsd, &dnsl->list, next) { 1292 TAILQ_FOREACH(dnsd, &dnsl->list, next) {
1293 CHECKLEN(dnsd->len); 1293 CHECKLEN(dnsd->len);
1294 memcpy(buf, dnsd->domain, dnsd->len); 1294 memcpy(buf, dnsd->domain, dnsd->len);
1295 buf += dnsd->len; 1295 buf += dnsd->len;
1296 } 1296 }
1297 /* Ensure our length is padded correctly */ 1297 /* Ensure our length is padded correctly */
1298 len = buf - (char *)ndopt_dnssl; 1298 len = buf - (char *)ndopt_dnssl;
1299 plen = len % 8 ? 8 - len % 8 : 0; 1299 plen = len % 8 ? 8 - len % 8 : 0;
1300 CHECKLEN(plen); 1300 CHECKLEN(plen);
1301 memset(buf, 0, plen); 1301 memset(buf, 0, plen);
1302 buf += plen; 1302 buf += plen;
1303 ndopt_dnssl->nd_opt_dnssl_len = (len + plen) / 8; 1303 ndopt_dnssl->nd_opt_dnssl_len = (len + plen) / 8;
1304 } 1304 }
1305 memset(buf, 0, packlen - (buf - rainfo->ra_data)); 1305 memset(buf, 0, packlen - (buf - rainfo->ra_data));
1306} 1306}
1307 1307
1308static int 1308static int
1309getinet6sysctl(int code) 1309getinet6sysctl(int code)
1310{ 1310{
1311 int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 }; 1311 static const int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 };
1312 int value; 1312 int value;
1313 size_t size; 1313 size_t size;
1314 1314
1315 mib[3] = code; 1315 mib[3] = code;
1316 size = sizeof(value); 1316 size = sizeof(value);
1317 if (sysctl(mib, __arraycount(mib), &value, &size, NULL, 0) 1317 if (sysctl(mib, __arraycount(mib), &value, &size, NULL, 0)
1318 < 0) { 1318 < 0) {
1319 syslog(LOG_ERR, "<%s>: failed to get ip6 sysctl(%d): %m", 1319 syslog(LOG_ERR, "<%s>: failed to get ip6 sysctl(%d): %m",
1320 __func__, code); 1320 __func__, code);
1321 return -1; 1321 return -1;
1322 } 1322 }
1323 else 1323 else
1324 return value; 1324 return value;
1325} 1325}