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: src/usr.sbin/rrenumd/rrenumd.c,v 1.1.2.4 2001/07/09 09:49:49 ume Exp $
  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 <netinet6/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
 121
 122 /* Print usage. Don't call this after daemonized. */
 123 static void
 124 show_usage(void)
 125 {
 126         fprintf(stderr, "usage: rrenumd [-c conf_file|-s] [-df"
 127 #ifdef IPSEC
 128 #ifdef IPSEC_POLICY_IPSEC
 129                 "] [-P policy"
 130 #else /* IPSEC_POLICY_IPSEC */
 131                 "AE"
 132 #endif /* IPSEC_POLICY_IPSEC */
 133 #endif /* IPSEC */
 134                 "]\n");
 135         exit(1);
 136 }
 137
 138 static void
 139 init_sin6(struct sockaddr_in6 *sin6, const char *addr_ascii)
 140 {
 141         memset(sin6, 0, sizeof(*sin6));
 142         sin6->sin6_len = sizeof(*sin6);
 143         sin6->sin6_family = AF_INET6;
 144         if (inet_pton(AF_INET6, addr_ascii, &sin6->sin6_addr) != 1)
 145                 ; /* XXX do something */
 146 }
 147
 148 #if 0  /* XXX: not necessary ?? */
 149 static void
 150 join_multi(const char *addrname)
 151 {
 152         struct ipv6_mreq mreq;
 153
 154         if (inet_pton(AF_INET6, addrname, &mreq.ipv6mr_multiaddr.s6_addr)
 155             != 1) {
 156                 syslog(LOG_ERR, "<%s> inet_pton failed(library bug?)",
 157                        __func__);
 158                 exit(1);
 159         }
 160         /* ADHOC: currently join only one */
 161         {
 162                 if ((mreq.ipv6mr_interface = if_nametoindex(ifname)) == 0) {
 163                         syslog(LOG_ERR, "<%s> ifname %s should be invalid: %s",
 164                                __func__, ifname, strerror(errno));
 165                         exit(1);
 166                 }
 167                 if (setsockopt(s, IPPROTO_IPV6, IPV6_JOIN_GROUP,
 168                                &mreq,
 169                                sizeof(mreq)) < 0) {
 170                         syslog(LOG_ERR, "<%s> IPV6_JOIN_GROUP on %s: %s",
 171                                __func__, ifname, strerror(errno));
 172                         exit(1);
 173                 }
 174         }
 175 }
 176 #endif
 177
 178 static void
 179 init_globals(void)
 180 {
 181         static struct iovec rcviov;
 182         static u_char rprdata[4500]; /* maximal MTU of connected links */
 183         static u_char *rcvcmsgbuf = NULL;
 184         static u_char *sndcmsgbuf = NULL;
 185         int sndcmsglen, rcvcmsglen;
 186
 187         /* init ll_allrouters */
 188         init_sin6(&sin6_ll_allrouters, LL_ALLROUTERS);
 189
 190         /* initialize msghdr for receiving packets */
 191         rcviov.iov_base = (caddr_t)rprdata;
 192         rcviov.iov_len = sizeof(rprdata);
 193         rcvmhdr.msg_namelen = sizeof(struct sockaddr_in6);
 194         rcvmhdr.msg_iov = &rcviov;
 195         rcvmhdr.msg_iovlen = 1;
 196         rcvcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) +
 197                 CMSG_SPACE(sizeof(int));
 198         if (rcvcmsgbuf == NULL &&
 199             (rcvcmsgbuf = (u_char *)malloc(rcvcmsglen)) == NULL) {
 200                 syslog(LOG_ERR, "<%s>: malloc failed", __func__);
 201                 exit(1);
 202         }
 203         rcvmhdr.msg_control = (caddr_t)rcvcmsgbuf;
 204         rcvmhdr.msg_controllen = rcvcmsglen;
 205
 206         /* initialize msghdr for sending packets */
 207         sndmhdr.msg_namelen = sizeof(struct sockaddr_in6);
 208         sndmhdr.msg_iovlen = 1;
 209         sndcmsglen = CMSG_SPACE(sizeof(struct in6_pktinfo)) +
 210                 CMSG_SPACE(sizeof(int));
 211         if (sndcmsgbuf == NULL &&
 212             (sndcmsgbuf = (u_char *)malloc(sndcmsglen)) == NULL) {
 213                 syslog(LOG_ERR, "<%s>: malloc failed", __func__);
 214                 exit(1);
 215         }
 216         sndmhdr.msg_control = (caddr_t)sndcmsgbuf;
 217         sndmhdr.msg_controllen = sndcmsglen;
 218 }
 219
 220 static void
 221 config(FILE **fpp)
 222 {
 223         struct payload_list *pl;
 224         struct iovec *iov;
 225         struct icmp6_router_renum *irr;
 226         struct rr_pco_match *rpm;
 227
 228         if (parse(fpp) < 0) {
 229                 syslog(LOG_ERR, "<%s> parse failed", __func__);
 230                 exit(1);
 231         }
 232
 233         /* initialize fields not configured by parser */
 234         for (pl = pl_head; pl; pl = pl->pl_next) {
 235                 iov = (struct iovec *)&pl->pl_sndiov;
 236                 irr = (struct icmp6_router_renum *)&pl->pl_irr;
 237                 rpm = (struct rr_pco_match *)&pl->pl_rpm;
 238
 239                 irr->rr_type = ICMP6_ROUTER_RENUMBERING;
 240                 irr->rr_code = 0;
 241                 /*
 242                  * now we don't support multiple PCOs in a rr message.
 243                  * so segment number is not supported.
 244                  */
 245                 /* TODO: rr flags config in parser */
 246                 irr->rr_flags |= ICMP6_RR_FLAGS_SPECSITE;
 247                 /* TODO: max delay config in parser */
 248
 249                 /*
 250                  * means only 1 use_prefix is contained as router-renum-05.txt.
 251                  * now we don't support multiple PCOs in a rr message,
 252                  * nor multiple use_prefix in one PCO.
 253                  */
 254                 rpm->rpm_len = 4*1 +3;
 255                 rpm->rpm_ordinal = 0;
 256                 iov->iov_base = (caddr_t)irr;
 257                 iov->iov_len =  sizeof(struct icmp6_router_renum)
 258                         + sizeof(struct rr_pco_match)
 259                         + sizeof(struct rr_pco_use);
 260         }
 261 }
 262
 263 static void
 264 sock6_open(struct flags *flags
 265 #ifdef IPSEC_POLICY_IPSEC
 266            , char *policy
 267 #endif /* IPSEC_POLICY_IPSEC */
 268            )
 269 {
 270         struct icmp6_filter filt;
 271         int on;
 272 #ifdef IPSEC
 273 #ifndef IPSEC_POLICY_IPSEC
 274         int optval;
 275 #endif
 276 #endif
 277
 278         if (with_v6dest == 0)
 279                 return;
 280         if (with_v6dest &&
 281             (s6 = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0) {
 282                 syslog(LOG_ERR, "<%s> socket(v6): %s", __func__,
 283                        strerror(errno));
 284                 exit(1);
 285         }
 286
 287         /*
 288          * join all routers multicast addresses.
 289          */
 290 #if 0 /* XXX: not necessary ?? */
 291         join_multi(LL_ALLROUTERS);
 292         join_multi(SL_ALLROUTERS);
 293 #endif
 294
 295         /* set icmpv6 filter */
 296         ICMP6_FILTER_SETBLOCKALL(&filt);
 297         ICMP6_FILTER_SETPASS(ICMP6_ROUTER_RENUMBERING, &filt);
 298         if (setsockopt(s6, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
 299                        sizeof(filt)) < 0) {
 300                 syslog(LOG_ERR, "<%s> IICMP6_FILTER: %s",
 301                        __func__, strerror(errno));
 302                 exit(1);
 303         }
 304
 305         /* specify to tell receiving interface */
 306         on = 1;
 307         if (setsockopt(s6, IPPROTO_IPV6, IPV6_PKTINFO, &on,
 308                        sizeof(on)) < 0) {
 309                 syslog(LOG_ERR, "<%s> IPV6_PKTINFO: %s",
 310                        __func__, strerror(errno));
 311                 exit(1);
 312         }
 313
 314 #ifdef IPSEC
 315 #ifdef IPSEC_POLICY_IPSEC
 316         if (flags->policy) {
 317                 char *buf;
 318                 buf = ipsec_set_policy(policy, strlen(policy));
 319                 if (buf == NULL)
 320                         errx(1, "%s", ipsec_strerror());
 321                 /* XXX should handle in/out bound policy. */
 322                 if (setsockopt(s6, IPPROTO_IPV6, IPV6_IPSEC_POLICY,
 323                                 buf, ipsec_get_policylen(buf)) < 0)
 324                         err(1, "setsockopt(IPV6_IPSEC_POLICY)");
 325                 free(buf);
 326         }
 327 #else /* IPSEC_POLICY_IPSEC */
 328         if (flags->auth) {
 329                 optval = IPSEC_LEVEL_REQUIRE;
 330                 if (setsockopt(s6, IPPROTO_IPV6, IPV6_AUTH_TRANS_LEVEL,
 331                                &optval, sizeof(optval)) == -1) {
 332                         syslog(LOG_ERR, "<%s> IPV6_AUTH_TRANS_LEVEL: %s",
 333                                __func__, strerror(errno));
 334                         exit(1);
 335                 }
 336         }
 337         if (flags->encrypt) {
 338                 optval = IPSEC_LEVEL_REQUIRE;
 339                 if (setsockopt(s6, IPPROTO_IPV6, IPV6_ESP_TRANS_LEVEL,
 340                                 &optval, sizeof(optval)) == -1) {
 341                         syslog(LOG_ERR, "<%s> IPV6_ESP_TRANS_LEVEL: %s",
 342                                __func__, strerror(errno));
 343                         exit(1);
 344                 }
 345         }
 346 #endif /* IPSEC_POLICY_IPSEC */
 347 #endif /* IPSEC */
 348
 349         return;
 350 }
 351
 352 static void
 353 sock4_open(struct flags *flags
 354 #ifdef IPSEC_POLICY_IPSEC
 355            , char *policy
 356 #endif /* IPSEC_POLICY_IPSEC */
 357            )
 358 {
 359 #ifdef IPSEC
 360 #ifndef IPSEC_POLICY_IPSEC
 361         int optval;
 362 #endif
 363 #endif
 364
 365         if (with_v4dest == 0)
 366                 return;
 367         if ((s4 = socket(AF_INET, SOCK_RAW, IPPROTO_ICMPV6)) < 0) {
 368                 syslog(LOG_ERR, "<%s> socket(v4): %s", __func__,
 369                        strerror(errno));
 370                 exit(1);
 371         }
 372
 373 #if 0 /* XXX: not necessary ?? */
 374         /*
 375          * join all routers multicast addresses.
 376          */
 377         some_join_function();
 378 #endif
 379
 380 #ifdef IPSEC
 381 #ifdef IPSEC_POLICY_IPSEC
 382         if (flags->policy) {
 383                 char *buf;
 384                 buf = ipsec_set_policy(policy, strlen(policy));
 385                 if (buf == NULL)
 386                         errx(1, "%s", ipsec_strerror());
 387                 /* XXX should handle in/out bound policy. */
 388                 if (setsockopt(s4, IPPROTO_IP, IP_IPSEC_POLICY,
 389                                 buf, ipsec_get_policylen(buf)) < 0)
 390                         err(1, "setsockopt(IP_IPSEC_POLICY)");
 391                 free(buf);
 392         }
 393 #else /* IPSEC_POLICY_IPSEC */
 394         if (flags->auth) {
 395                 optval = IPSEC_LEVEL_REQUIRE;
 396                 if (setsockopt(s4, IPPROTO_IP, IP_AUTH_TRANS_LEVEL,
 397                                &optval, sizeof(optval)) == -1) {
 398                         syslog(LOG_ERR, "<%s> IP_AUTH_TRANS_LEVEL: %s",
 399                                __func__, strerror(errno));
 400                         exit(1);
 401                 }
 402         }
 403         if (flags->encrypt) {
 404                 optval = IPSEC_LEVEL_REQUIRE;
 405                 if (setsockopt(s4, IPPROTO_IP, IP_ESP_TRANS_LEVEL,
 406                                 &optval, sizeof(optval)) == -1) {
 407                         syslog(LOG_ERR, "<%s> IP_ESP_TRANS_LEVEL: %s",
 408                                __func__, strerror(errno));
 409                         exit(1);
 410                 }
 411         }
 412 #endif /* IPSEC_POLICY_IPSEC */
 413 #endif /* IPSEC */
 414
 415         return;
 416 }
 417
 418 static void
 419 rrenum_output(struct payload_list *pl, struct dst_list *dl)
 420 {
 421         int i, msglen = 0;
 422         struct cmsghdr *cm;
 423         struct in6_pktinfo *pi;
 424         struct sockaddr_in6 *sin6 = NULL;
 425
 426         sndmhdr.msg_name = (caddr_t)dl->dl_dst;
 427         if (dl->dl_dst->sa_family == AF_INET6)
 428                 sin6 = (struct sockaddr_in6 *)dl->dl_dst;
 429
 430         if (sin6 != NULL &&
 431             IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
 432                 int hoplimit = RR_MCHLIM_DEFAULT;
 433
 434                 cm = CMSG_FIRSTHDR(&sndmhdr);
 435                 /* specify the outgoing interface */
 436                 cm->cmsg_level = IPPROTO_IPV6;
 437                 cm->cmsg_type = IPV6_PKTINFO;
 438                 cm->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
 439                 pi = (struct in6_pktinfo *)CMSG_DATA(cm);
 440                 memset(&pi->ipi6_addr, 0, sizeof(pi->ipi6_addr));       /*XXX*/
 441                 pi->ipi6_ifindex = sin6->sin6_scope_id;
 442                 msglen += CMSG_LEN(sizeof(struct in6_pktinfo));
 443
 444                 /* specify the hop limit of the packet if dest is link local */
 445                 /* not defined by router-renum-05.txt, but maybe its OK */
 446                 cm = CMSG_NXTHDR(&sndmhdr, cm);
 447                 cm->cmsg_level = IPPROTO_IPV6;
 448                 cm->cmsg_type = IPV6_HOPLIMIT;
 449                 cm->cmsg_len = CMSG_LEN(sizeof(int));
 450                 memcpy(CMSG_DATA(cm), &hoplimit, sizeof(int));
 451                 msglen += CMSG_LEN(sizeof(int));
 452         }
 453         sndmhdr.msg_controllen = msglen;
 454         if (sndmhdr.msg_controllen == 0)
 455                 sndmhdr.msg_control = 0;
 456
 457         sndmhdr.msg_iov = &pl->pl_sndiov;
 458         i = sendmsg(dl->dl_dst->sa_family == AF_INET ? s4 : s6, &sndmhdr, 0);
 459
 460         if (i < 0 || i != sndmhdr.msg_iov->iov_len)
 461                 syslog(LOG_ERR, "<%s> sendmsg: %s", __func__,
 462                        strerror(errno));
 463 }
 464
 465 static void
 466 rrenum_snd_eachdst(struct payload_list *pl)
 467 {
 468         struct dst_list *dl;
 469
 470         for (dl = dl_head; dl; dl = dl->dl_next) {
 471                 rrenum_output(pl, dl);
 472         }
 473 }
 474
 475 #if 0
 476 static void
 477 rrenum_snd_fullsequence(void)
 478 {
 479         struct payload_list *pl;
 480
 481         for (pl = pl_head; pl; pl = pl->pl_next) {
 482                 rrenum_snd_eachdst(pl);
 483         }
 484 }
 485 #endif
 486
 487 static void
 488 rrenum_input(int s)
 489 {
 490         int i;
 491         struct icmp6_router_renum *rr;
 492
 493         /* get message */
 494         if ((i = recvmsg(s, &rcvmhdr, 0)) < 0) {
 495                 syslog(LOG_ERR, "<%s> recvmsg: %s", __func__,
 496                        strerror(errno));
 497                 return;
 498         }
 499         if (s == s4)
 500                 i -= sizeof(struct ip);
 501         if (i < sizeof(struct icmp6_router_renum)) {
 502                 syslog(LOG_ERR, "<%s> packet size(%d) is too short",
 503                        __func__, i);
 504                 return;
 505         }
 506         if (s == s4) {
 507                 struct ip *ip = (struct ip *)rcvmhdr.msg_iov->iov_base;
 508
 509                 rr = (struct icmp6_router_renum *)(ip + 1);
 510         } else /* s == s6 */
 511                 rr = (struct icmp6_router_renum *)rcvmhdr.msg_iov->iov_base;
 512
 513         switch(rr->rr_code) {
 514         case ICMP6_ROUTER_RENUMBERING_COMMAND:
 515                 /* COMMAND will be processed by rtadvd */
 516                 break;
 517         case ICMP6_ROUTER_RENUMBERING_RESULT:
 518                 /* TODO: receiving result message */
 519                 break;
 520         default:
 521                 syslog(LOG_ERR, "<%s> received unknown code %d",
 522                        __func__, rr->rr_code);
 523                 break;
 524         }
 525 }
 526
 527 int
 528 main(int argc, char *argv[])
 529 {
 530         FILE *fp = stdin;
 531         fd_set fdset;
 532         struct timeval timeout;
 533         int ch, i, maxfd = 0, send_counter = 0;
 534         struct flags flags;
 535         struct payload_list *pl;
 536 #ifdef IPSEC_POLICY_IPSEC
 537         char *policy = NULL;
 538 #endif
 539
 540         memset(&flags, 0, sizeof(flags));
 541         openlog("rrenumd", LOG_PID, LOG_DAEMON);
 542
 543         /* get options */
 544         while ((ch = getopt(argc, argv, "c:sdf"
 545 #ifdef IPSEC
 546 #ifdef IPSEC_POLICY_IPSEC
 547                             "P:"
 548 #else /* IPSEC_POLICY_IPSEC */
 549                             "AE"
 550 #endif /* IPSEC_POLICY_IPSEC */
 551 #endif /* IPSEC */
 552                             )) != -1){
 553                 switch (ch) {
 554                 case 'c':
 555                         if((fp = fopen(optarg, "r")) == NULL) {
 556                                 syslog(LOG_ERR,
 557                                        "<%s> config file %s open failed",
 558                                        __func__, optarg);
 559                                 exit(1);
 560                         }
 561                         break;
 562                 case 's':
 563                         fp = stdin;
 564                         break;
 565                 case 'd':
 566                         flags.debug = 1;
 567                         break;
 568                 case 'f':
 569                         flags.fg = 1;
 570                         break;
 571 #ifdef IPSEC
 572 #ifdef IPSEC_POLICY_IPSEC
 573                 case 'P':
 574                         flags.policy = 1;
 575                         policy = strdup(optarg);
 576                         break;
 577 #else /* IPSEC_POLICY_IPSEC */
 578                 case 'A':
 579                         flags.auth = 1;
 580                         break;
 581                 case 'E':
 582                         flags.encrypt = 1;
 583                         break;
 584 #endif /* IPSEC_POLICY_IPSEC */
 585 #endif /*IPSEC*/
 586                 default:
 587                         show_usage();
 588                 }
 589         }
 590         argc -= optind;
 591         argv += optind;
 592
 593         /* set log level */
 594         if (flags.debug == 0)
 595                 setlogmask(LOG_UPTO(LOG_ERR));
 596         if (flags.debug == 1)
 597                 setlogmask(LOG_UPTO(LOG_INFO));
 598
 599         /* init global variables */
 600         init_globals();
 601
 602         config(&fp);
 603
 604         sock6_open(&flags
 605 #ifdef IPSEC_POLICY_IPSEC
 606                    , policy
 607 #endif /* IPSEC_POLICY_IPSEC */
 608                    );
 609         sock4_open(&flags
 610 #ifdef IPSEC_POLICY_IPSEC
 611                    , policy
 612 #endif /* IPSEC_POLICY_IPSEC */
 613                    );
 614
 615         if (!flags.fg)
 616                 daemon(0, 0);
 617
 618         FD_ZERO(&fdset);
 619         if (with_v6dest) {
 620                 FD_SET(s6, &fdset);
 621                 if (s6 > maxfd)
 622                         maxfd = s6;
 623         }
 624         if (with_v4dest) {
 625                 FD_SET(s4, &fdset);
 626                 if (s4 > maxfd)
 627                         maxfd = s4;
 628         }
 629
 630         /* ADHOC: timeout each 30seconds */
 631         memset(&timeout, 0, sizeof(timeout));
 632
 633         /* init temporary payload_list and send_counter*/
 634         pl = pl_head;
 635         send_counter = retry + 1;
 636         while (1) {
 637                 struct fd_set select_fd = fdset; /* reinitialize */
 638
 639                 if ((i = select(maxfd + 1, &select_fd, NULL, NULL,
 640                                 &timeout)) < 0){
 641                         syslog(LOG_ERR, "<%s> select: %s",
 642                                __func__, strerror(errno));
 643                         continue;
 644                 }
 645                 if (i == 0) {   /* timeout */
 646                         if (pl == NULL)
 647                                 exit(0);
 648                         rrenum_snd_eachdst(pl);
 649                         send_counter--;
 650                         timeout.tv_sec = 30;
 651                         if (send_counter == 0) {
 652                                 timeout.tv_sec = 0;
 653                                 pl = pl->pl_next;
 654                                 send_counter = retry + 1;
 655                         }
 656                 }
 657                 if (FD_ISSET(s4, &select_fd))
 658                         rrenum_input(s4);
 659                 if (FD_ISSET(s6, &select_fd))
 660                         rrenum_input(s6);
 661         }
 662 }