usr.sbin/rrenumd/rrenumd.c

   1 /*      $KAME: rrenumd.c,v 1.20 2000/11/08 02:40:53 itojun Exp $        */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD$
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/socket.h>
  36 #include <sys/uio.h>
  37 #include <sys/time.h>
  38
  39 #include <string.h>
  40
  41 #include <net/route.h>
  42
  43 #include <netinet/in_systm.h>
  44 #include <netinet/in.h>
  45 #include <netinet/ip.h>
  46 #include <netinet/ip6.h>
  47 #include <netinet/icmp6.h>
  48
  49 #include <arpa/inet.h>
  50
  51 #ifdef IPSEC
  52 #include <netipsec/ipsec.h>
  53 #endif
  54
  55 #include <stdio.h>
  56 #include <err.h>
  57 #include <errno.h>
  58 #include <stdlib.h>
  59 #include <unistd.h>
  60 #include <syslog.h>
  61
  62 #include "rrenumd.h"
  63
  64 #define LL_ALLROUTERS "ff02::2"
  65 #define SL_ALLROUTERS "ff05::2"
  66
  67 #define RR_MCHLIM_DEFAULT 64
  68
  69 #ifndef IN6_IS_SCOPE_LINKLOCAL
  70 #define IN6_IS_SCOPE_LINKLOCAL(a)       \
  71         ((IN6_IS_ADDR_LINKLOCAL(a)) ||  \
  72          (IN6_IS_ADDR_MC_LINKLOCAL(a)))
  73 #endif /* IN6_IS_SCOPE_LINKLOCAL */
  74
  75 struct flags {
  76         u_long debug : 1;
  77         u_long fg : 1;
  78 #ifdef IPSEC
  79 #ifdef IPSEC_POLICY_IPSEC
  80         u_long policy : 1;
  81 #else /* IPSEC_POLICY_IPSEC */
  82         u_long auth : 1;
  83         u_long encrypt : 1;
  84 #endif /* IPSEC_POLICY_IPSEC */
  85 #endif /*IPSEC*/
  86 };
  87
  88 struct msghdr sndmhdr;
  89 struct msghdr rcvmhdr;
  90 struct sockaddr_in6 from;
  91 struct sockaddr_in6 sin6_ll_allrouters;
  92
  93 int s4, s6;
  94 int with_v4dest, with_v6dest;
  95 struct in6_addr prefix; /* ADHOC */
  96 int prefixlen = 64; /* ADHOC */
  97
  98 extern int parse(FILE **);
  99
 100 static void show_usage(void);
 101 static void init_sin6(struct sockaddr_in6 *, const char *);
 102 #if 0
 103 static void join_multi(const char *);
 104 #endif
 105 static void init_globals(void);
 106 static void config(FILE **);
 107 #ifdef IPSEC_POLICY_IPSEC
 108 static void sock6_open(struct flags *, char *);
 109 static void sock4_open(struct flags *, char *);
 110 #else
 111 static void sock6_open(struct flags *);
 112 static void sock4_open(struct flags *);
 113 #endif
 114 static void rrenum_output(struct payload_list *, struct dst_list *);
 115 static void rrenum_snd_eachdst(struct payload_list *);
 116 #if 0
 117 static void rrenum_snd_fullsequence(void);
 118 #endif
 119 static void rrenum_input(int);
 120 int main(int, char *[]);
 121
 122
 123 /* Print usage. Don't call this after daemonized. */
 124 static void
 125 show_usage()
 126 {
 127         fprintf(stderr, "usage: rrenumd [-c conf_file|-s] [-df"
 128 #ifdef IPSEC
 129 #ifdef IPSEC_POLICY_IPSEC
 130                 "] [-P policy"
 131 #else /* IPSEC_POLICY_IPSEC */
 132                 "AE"
 133 #endif /* IPSEC_POLICY_IPSEC */
 134 #endif /* IPSEC */
 135                 "]\n");
 136         exit(1);
 137 }
 138
 139 static void
 140 init_sin6(struct sockaddr_in6 *sin6, const char *addr_ascii)
 141 {
 142         memset(sin6, 0, sizeof(*sin6));
 143         sin6->sin6_len = sizeof(*sin6);
 144         sin6->sin6_family = AF_INET6;
 145         if (inet_pton(AF_INET6, addr_ascii, &sin6->sin6_addr) != 1)
 146                 ; /* XXX do something */
 147 }
 148
 149 #if 0  /* XXX: not necessary ?? */
 150 static void
 151 join_multi(const char *addrname)
 152 {
 153         struct ipv6_mreq mreq;
 154
 155         if (inet_pton(AF_INET6, addrname, &mreq.ipv6mr_multiaddr.s6_addr)
 156             != 1) {
 157                 syslog(LOG_ERR, "<%s> inet_pton failed(library bug?)",
 158                        __func__);
 159                 exit(1);
 160         }
 161         /* ADHOC: currently join only one */
 162         {
 163                 if ((mreq.ipv6mr_interface = if_nametoindex(ifname)) == 0) {
 164                         syslog(LOG_ERR, "<%s> ifname %s should be invalid: %s",
 165                                __func__, ifname, strerror(errno));
 166                         exit(1);
 167                 }
 168                 if (setsockopt(s, IPPROTO_IPV6, IPV6_JOIN_GROUP,
 169                                &mreq,
 170                                sizeof(mreq)) < 0) {
 171                         syslog(LOG_ERR, "<%s> IPV6_JOIN_GROUP on %s: %s",
 172                                __func__, ifname, strerror(errno));
 173                         exit(1);
 174                 }
 175         }
 176 }
 177 #endif
 178
 179 static void
 180 init_globals()
 181 {
 182         static struct iovec rcviov;
 183         static u_char rprdata[4500]; /* maximal MTU of connected links */
 184         static u_char *rcvcmsgbuf = NULL;
 185         static u_char *sndcmsgbuf = NULL;
 186         int sndcmsglen, rcvcmsglen;
 187
 188         /* init ll_allrouters */
 189         init_sin6(&sin6_ll_allrouters, LL_ALLROUTERS);
 190
 191         /* initialize msghdr for receiving packets */
 192         rcviov.iov_base = (caddr_t)rprdata;
 193         rcviov.iov_len = sizeof(rprdata);
 194         rcvmhdr.msg_namelen = sizeof(struct sockaddr_in6);
 195         rcvmhdr.msg_iov = &rcviov;
 196         rcvmhdr.msg_iovlen = 1;
 197         rcvcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) +
 198                 CMSG_SPACE(sizeof(int));
 199         if (rcvcmsgbuf == NULL &&
 200             (rcvcmsgbuf = (u_char *)malloc(rcvcmsglen)) == NULL) {
 201                 syslog(LOG_ERR, "<%s>: malloc failed", __func__);
 202                 exit(1);
 203         }
 204         rcvmhdr.msg_control = (caddr_t)rcvcmsgbuf;
 205         rcvmhdr.msg_controllen = rcvcmsglen;
 206
 207         /* initialize msghdr for sending packets */
 208         sndmhdr.msg_namelen = sizeof(struct sockaddr_in6);
 209         sndmhdr.msg_iovlen = 1;
 210         sndcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) +
 211                 CMSG_SPACE(sizeof(int));
 212         if (sndcmsgbuf == NULL &&
 213             (sndcmsgbuf = (u_char *)malloc(sndcmsglen)) == NULL) {
 214                 syslog(LOG_ERR, "<%s>: malloc failed", __func__);
 215                 exit(1);
 216         }
 217         sndmhdr.msg_control = (caddr_t)sndcmsgbuf;
 218         sndmhdr.msg_controllen = sndcmsglen;
 219 }
 220
 221 static void
 222 config(FILE **fpp)
 223 {
 224         struct payload_list *pl;
 225         struct iovec *iov;
 226         struct icmp6_router_renum *irr;
 227         struct rr_pco_match *rpm;
 228
 229         if (parse(fpp) < 0) {
 230                 syslog(LOG_ERR, "<%s> parse failed", __func__);
 231                 exit(1);
 232         }
 233
 234         /* initialize fields not configured by parser */
 235         for (pl = pl_head; pl; pl = pl->pl_next) {
 236                 iov = (struct iovec *)&pl->pl_sndiov;
 237                 irr = (struct icmp6_router_renum *)&pl->pl_irr;
 238                 rpm = (struct rr_pco_match *)&pl->pl_rpm;
 239
 240                 irr->rr_type = ICMP6_ROUTER_RENUMBERING;
 241                 irr->rr_code = 0;
 242                 /*
 243                  * now we don't support multiple PCOs in a rr message.
 244                  * so segment number is not supported.
 245                  */
 246                 /* TODO: rr flags config in parser */
 247                 irr->rr_flags |= ICMP6_RR_FLAGS_SPECSITE;
 248                 /* TODO: max delay config in parser */
 249
 250                 /*
 251                  * means only 1 use_prefix is contained as router-renum-05.txt.
 252                  * now we don't support multiple PCOs in a rr message,
 253                  * nor multiple use_prefix in one PCO.
 254                  */
 255                 rpm->rpm_len = 4*1 +3;
 256                 rpm->rpm_ordinal = 0;
 257                 iov->iov_base = (caddr_t)irr;
 258                 iov->iov_len =  sizeof(struct icmp6_router_renum)
 259                         + sizeof(struct rr_pco_match)
 260                         + sizeof(struct rr_pco_use);
 261         }
 262 }
 263
 264 static void
 265 sock6_open(struct flags *flags
 266 #ifdef IPSEC_POLICY_IPSEC
 267            , char *policy
 268 #endif /* IPSEC_POLICY_IPSEC */
 269            )
 270 {
 271         struct icmp6_filter filt;
 272         int on;
 273 #ifdef IPSEC
 274 #ifndef IPSEC_POLICY_IPSEC
 275         int optval;
 276 #endif
 277 #endif
 278
 279         if (with_v6dest == 0)
 280                 return;
 281         if (with_v6dest &&
 282             (s6 = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0) {
 283                 syslog(LOG_ERR, "<%s> socket(v6): %s", __func__,
 284                        strerror(errno));
 285                 exit(1);
 286         }
 287
 288         /*
 289          * join all routers multicast addresses.
 290          */
 291 #if 0 /* XXX: not necessary ?? */
 292         join_multi(LL_ALLROUTERS);
 293         join_multi(SL_ALLROUTERS);
 294 #endif
 295
 296         /* set icmpv6 filter */
 297         ICMP6_FILTER_SETBLOCKALL(&filt);
 298         ICMP6_FILTER_SETPASS(ICMP6_ROUTER_RENUMBERING, &filt);
 299         if (setsockopt(s6, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
 300                        sizeof(filt)) < 0) {
 301                 syslog(LOG_ERR, "<%s> IICMP6_FILTER: %s",
 302                        __func__, strerror(errno));
 303                 exit(1);
 304         }
 305
 306         /* specify to tell receiving interface */
 307         on = 1;
 308         if (setsockopt(s6, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on,
 309                        sizeof(on)) < 0) {
 310                 syslog(LOG_ERR, "<%s> IPV6_RECVPKTINFO: %s",
 311                        __func__, strerror(errno));
 312                 exit(1);
 313         }
 314
 315 #ifdef IPSEC
 316 #ifdef IPSEC_POLICY_IPSEC
 317         if (flags->policy) {
 318                 char *buf;
 319                 buf = ipsec_set_policy(policy, strlen(policy));
 320                 if (buf == NULL)
 321                         errx(1, "%s", ipsec_strerror());
 322                 /* XXX should handle in/out bound policy. */
 323                 if (setsockopt(s6, IPPROTO_IPV6, IPV6_IPSEC_POLICY,
 324                                 buf, ipsec_get_policylen(buf)) < 0)
 325                         err(1, "setsockopt(IPV6_IPSEC_POLICY)");
 326                 free(buf);
 327         }
 328 #else /* IPSEC_POLICY_IPSEC */
 329         if (flags->auth) {
 330                 optval = IPSEC_LEVEL_REQUIRE;
 331                 if (setsockopt(s6, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
 332                                &optval, sizeof(optval)) == -1) {
 333                         syslog(LOG_ERR, "<%s> IPV6_AUTH_TRANS_LEVEL: %s",
 334                                __func__, strerror(errno));
 335                         exit(1);
 336                 }
 337         }
 338         if (flags->encrypt) {
 339                 optval = IPSEC_LEVEL_REQUIRE;
 340                 if (setsockopt(s6, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
 341                                 &optval, sizeof(optval)) == -1) {
 342                         syslog(LOG_ERR, "<%s> IPV6_ESP_TRANS_LEVEL: %s",
 343                                __func__, strerror(errno));
 344                         exit(1);
 345                 }
 346         }
 347 #endif /* IPSEC_POLICY_IPSEC */
 348 #endif /* IPSEC */
 349
 350         return;
 351 }
 352
 353 static void
 354 sock4_open(struct flags *flags
 355 #ifdef IPSEC_POLICY_IPSEC
 356            , char *policy
 357 #endif /* IPSEC_POLICY_IPSEC */
 358            )
 359 {
 360 #ifdef IPSEC
 361 #ifndef IPSEC_POLICY_IPSEC
 362         int optval;
 363 #endif
 364 #endif
 365
 366         if (with_v4dest == 0)
 367                 return;
 368         if ((s4 = socket(AF_INET, SOCK_RAW, IPPROTO_ICMPV6)) < 0) {
 369                 syslog(LOG_ERR, "<%s> socket(v4): %s", __func__,
 370                        strerror(errno));
 371                 exit(1);
 372         }
 373
 374 #if 0 /* XXX: not necessary ?? */
 375         /*
 376          * join all routers multicast addresses.
 377          */
 378         some_join_function();
 379 #endif
 380
 381 #ifdef IPSEC
 382 #ifdef IPSEC_POLICY_IPSEC
 383         if (flags->policy) {
 384                 char *buf;
 385                 buf = ipsec_set_policy(policy, strlen(policy));
 386                 if (buf == NULL)
 387                         errx(1, "%s", ipsec_strerror());
 388                 /* XXX should handle in/out bound policy. */
 389                 if (setsockopt(s4, IPPROTO_IP, IP_IPSEC_POLICY,
 390                                 buf, ipsec_get_policylen(buf)) < 0)
 391                         err(1, "setsockopt(IP_IPSEC_POLICY)");
 392                 free(buf);
 393         }
 394 #else /* IPSEC_POLICY_IPSEC */
 395         if (flags->auth) {
 396                 optval = IPSEC_LEVEL_REQUIRE;
 397                 if (setsockopt(s4, IPPROTO_IP, IP_AUTH_TRANS_LEVEL,
 398                                &optval, sizeof(optval)) == -1) {
 399                         syslog(LOG_ERR, "<%s> IP_AUTH_TRANS_LEVEL: %s",
 400                                __func__, strerror(errno));
 401                         exit(1);
 402                 }
 403         }
 404         if (flags->encrypt) {
 405                 optval = IPSEC_LEVEL_REQUIRE;
 406                 if (setsockopt(s4, IPPROTO_IP, IP_ESP_TRANS_LEVEL,
 407                                 &optval, sizeof(optval)) == -1) {
 408                         syslog(LOG_ERR, "<%s> IP_ESP_TRANS_LEVEL: %s",
 409                                __func__, strerror(errno));
 410                         exit(1);
 411                 }
 412         }
 413 #endif /* IPSEC_POLICY_IPSEC */
 414 #endif /* IPSEC */
 415
 416         return;
 417 }
 418
 419 static void
 420 rrenum_output(struct payload_list *pl, struct dst_list *dl)
 421 {
 422         int i, msglen = 0;
 423         struct cmsghdr *cm;
 424         struct in6_pktinfo *pi;
 425         struct sockaddr_in6 *sin6 = NULL;
 426
 427         sndmhdr.msg_name = (caddr_t)dl->dl_dst;
 428         if (dl->dl_dst->sa_family == AF_INET6)
 429                 sin6 = (struct sockaddr_in6 *)dl->dl_dst;
 430
 431         if (sin6 != NULL &&
 432             IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
 433                 int hoplimit = RR_MCHLIM_DEFAULT;
 434
 435                 cm = CMSG_FIRSTHDR(&sndmhdr);
 436                 /* specify the outgoing interface */
 437                 cm->cmsg_level = IPPROTO_IPV6;
 438                 cm->cmsg_type = IPV6_PKTINFO;
 439                 cm->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
 440                 pi = (struct in6_pktinfo *)CMSG_DATA(cm);
 441                 memset(&pi->ipi6_addr, 0, sizeof(pi->ipi6_addr));       /*XXX*/
 442                 pi->ipi6_ifindex = sin6->sin6_scope_id;
 443                 msglen += CMSG_LEN(sizeof(struct in6_pktinfo));
 444
 445                 /* specify the hop limit of the packet if dest is link local */
 446                 /* not defined by router-renum-05.txt, but maybe its OK */
 447                 cm = CMSG_NXTHDR(&sndmhdr, cm);
 448                 cm->cmsg_level = IPPROTO_IPV6;
 449                 cm->cmsg_type = IPV6_HOPLIMIT;
 450                 cm->cmsg_len = CMSG_LEN(sizeof(int));
 451                 memcpy(CMSG_DATA(cm), &hoplimit, sizeof(int));
 452                 msglen += CMSG_LEN(sizeof(int));
 453         }
 454         sndmhdr.msg_controllen = msglen;
 455         if (sndmhdr.msg_controllen == 0)
 456                 sndmhdr.msg_control = 0;
 457
 458         sndmhdr.msg_iov = &pl->pl_sndiov;
 459         i = sendmsg(dl->dl_dst->sa_family == AF_INET ? s4 : s6, &sndmhdr, 0);
 460
 461         if (i < 0 || i != sndmhdr.msg_iov->iov_len)
 462                 syslog(LOG_ERR, "<%s> sendmsg: %s", __func__,
 463                        strerror(errno));
 464 }
 465
 466 static void
 467 rrenum_snd_eachdst(struct payload_list *pl)
 468 {
 469         struct dst_list *dl;
 470
 471         for (dl = dl_head; dl; dl = dl->dl_next) {
 472                 rrenum_output(pl, dl);
 473         }
 474 }
 475
 476 #if 0
 477 static void
 478 rrenum_snd_fullsequence()
 479 {
 480         struct payload_list *pl;
 481
 482         for (pl = pl_head; pl; pl = pl->pl_next) {
 483                 rrenum_snd_eachdst(pl);
 484         }
 485 }
 486 #endif
 487
 488 static void
 489 rrenum_input(int s)
 490 {
 491         int i;
 492         struct icmp6_router_renum *rr;
 493
 494         /* get message */
 495         if ((i = recvmsg(s, &rcvmhdr, 0)) < 0) {
 496                 syslog(LOG_ERR, "<%s> recvmsg: %s", __func__,
 497                        strerror(errno));
 498                 return;
 499         }
 500         if (s == s4)
 501                 i -= sizeof(struct ip);
 502         if (i < sizeof(struct icmp6_router_renum)) {
 503                 syslog(LOG_ERR, "<%s> packet size(%d) is too short",
 504                        __func__, i);
 505                 return;
 506         }
 507         if (s == s4) {
 508                 struct ip *ip = (struct ip *)rcvmhdr.msg_iov->iov_base;
 509
 510                 rr = (struct icmp6_router_renum *)(ip + 1);
 511         } else /* s == s6 */
 512                 rr = (struct icmp6_router_renum *)rcvmhdr.msg_iov->iov_base;
 513
 514         switch(rr->rr_code) {
 515         case ICMP6_ROUTER_RENUMBERING_COMMAND:
 516                 /* COMMAND will be processed by rtadvd */
 517                 break;
 518         case ICMP6_ROUTER_RENUMBERING_RESULT:
 519                 /* TODO: receiving result message */
 520                 break;
 521         default:
 522                 syslog(LOG_ERR, "<%s> received unknown code %d",
 523                        __func__, rr->rr_code);
 524                 break;
 525         }
 526 }
 527
 528 int
 529 main(int argc, char *argv[])
 530 {
 531         FILE *fp = stdin;
 532         fd_set fdset;
 533         struct timeval timeout;
 534         int ch, i, maxfd = 0, send_counter = 0;
 535         struct flags flags;
 536         struct payload_list *pl;
 537 #ifdef IPSEC_POLICY_IPSEC
 538         char *policy = NULL;
 539 #endif
 540
 541         memset(&flags, 0, sizeof(flags));
 542         openlog("rrenumd", LOG_PID, LOG_DAEMON);
 543
 544         /* get options */
 545         while ((ch = getopt(argc, argv, "c:sdf"
 546 #ifdef IPSEC
 547 #ifdef IPSEC_POLICY_IPSEC
 548                             "P:"
 549 #else /* IPSEC_POLICY_IPSEC */
 550                             "AE"
 551 #endif /* IPSEC_POLICY_IPSEC */
 552 #endif /* IPSEC */
 553                             )) != -1){
 554                 switch (ch) {
 555                 case 'c':
 556                         if((fp = fopen(optarg, "r")) == NULL) {
 557                                 syslog(LOG_ERR,
 558                                        "<%s> config file %s open failed",
 559                                        __func__, optarg);
 560                                 exit(1);
 561                         }
 562                         break;
 563                 case 's':
 564                         fp = stdin;
 565                         break;
 566                 case 'd':
 567                         flags.debug = 1;
 568                         break;
 569                 case 'f':
 570                         flags.fg = 1;
 571                         break;
 572 #ifdef IPSEC
 573 #ifdef IPSEC_POLICY_IPSEC
 574                 case 'P':
 575                         flags.policy = 1;
 576                         policy = strdup(optarg);
 577                         break;
 578 #else /* IPSEC_POLICY_IPSEC */
 579                 case 'A':
 580                         flags.auth = 1;
 581                         break;
 582                 case 'E':
 583                         flags.encrypt = 1;
 584                         break;
 585 #endif /* IPSEC_POLICY_IPSEC */
 586 #endif /*IPSEC*/
 587                 default:
 588                         show_usage();
 589                 }
 590         }
 591         argc -= optind;
 592         argv += optind;
 593
 594         /* set log level */
 595         if (flags.debug == 0)
 596                 (void)setlogmask(LOG_UPTO(LOG_ERR));
 597         if (flags.debug == 1)
 598                 (void)setlogmask(LOG_UPTO(LOG_INFO));
 599
 600         /* init global variables */
 601         init_globals();
 602
 603         config(&fp);
 604
 605         sock6_open(&flags
 606 #ifdef IPSEC_POLICY_IPSEC
 607                    , policy
 608 #endif /* IPSEC_POLICY_IPSEC */
 609                    );
 610         sock4_open(&flags
 611 #ifdef IPSEC_POLICY_IPSEC
 612                    , policy
 613 #endif /* IPSEC_POLICY_IPSEC */
 614                    );
 615
 616         if (!flags.fg)
 617                 daemon(0, 0);
 618
 619         FD_ZERO(&fdset);
 620         if (with_v6dest) {
 621                 FD_SET(s6, &fdset);
 622                 if (s6 > maxfd)
 623                         maxfd = s6;
 624         }
 625         if (with_v4dest) {
 626                 FD_SET(s4, &fdset);
 627                 if (s4 > maxfd)
 628                         maxfd = s4;
 629         }
 630
 631         /* ADHOC: timeout each 30seconds */
 632         memset(&timeout, 0, sizeof(timeout));
 633
 634         /* init temporary payload_list and send_counter*/
 635         pl = pl_head;
 636         send_counter = retry + 1;
 637         while (1) {
 638                 struct fd_set select_fd = fdset; /* reinitialize */
 639
 640                 if ((i = select(maxfd + 1, &select_fd, NULL, NULL,
 641                                 &timeout)) < 0){
 642                         syslog(LOG_ERR, "<%s> select: %s",
 643                                __func__, strerror(errno));
 644                         continue;
 645                 }
 646                 if (i == 0) {   /* timeout */
 647                         if (pl == NULL)
 648                                 exit(0);
 649                         rrenum_snd_eachdst(pl);
 650                         send_counter--;
 651                         timeout.tv_sec = 30;
 652                         if (send_counter == 0) {
 653                                 timeout.tv_sec = 0;
 654                                 pl = pl->pl_next;
 655                                 send_counter = retry + 1;
 656                         }
 657                 }
 658                 if (FD_ISSET(s4, &select_fd))
 659                         rrenum_input(s4);
 660                 if (FD_ISSET(s6, &select_fd))
 661                         rrenum_input(s6);
 662         }
 663 }