1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgment: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)defs.h 8.1 (Berkeley) 6/5/93 34 * 35 * $FreeBSD: src/sbin/routed/defs.h,v 1.13 1999/09/05 17:49:11 peter Exp $ 36 */ 37 38 #ifdef sgi 39 #ident "$FreeBSD: src/sbin/routed/defs.h,v 1.13 1999/09/05 17:49:11 peter Exp $" 40 #endif 41 42 /* Definitions for RIPv2 routing process. 43 * 44 * This code is based on the 4.4BSD `routed` daemon, with extensions to 45 * support: 46 * RIPv2, including variable length subnet masks. 47 * Router Discovery 48 * aggregate routes in the kernel tables. 49 * aggregate advertised routes. 50 * maintain spare routes for faster selection of another gateway 51 * when the current gateway dies. 52 * timers on routes with second granularity so that selection 53 * of a new route does not wait 30-60 seconds. 54 * tolerance of static routes. 55 * tell the kernel hop counts 56 * do not advertise if ipforwarding=0 57 * 58 * The vestigial support for other protocols has been removed. There 59 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 60 * other protocols. The result is far smaller, faster, cleaner, and 61 * perhaps understandable. 62 * 63 * The accumulation of special flags and kludges added over the many 64 * years have been simplified and integrated. 65 */ 66 67 #include <stdio.h> 68 #include <netdb.h> 69 #include <stdlib.h> 70 #include <unistd.h> 71 #include <errno.h> 72 #include <string.h> 73 #ifdef sgi 74 #include <strings.h> 75 #include <bstring.h> 76 #endif 77 #include <stdarg.h> 78 #include <syslog.h> 79 #include <time.h> 80 #include <sys/cdefs.h> 81 #include <sys/time.h> 82 #include <sys/types.h> 83 #include <sys/param.h> 84 #include <sys/ioctl.h> 85 #include <sys/sysctl.h> 86 #include <sys/socket.h> 87 #ifdef sgi 88 #define _USER_ROUTE_TREE 89 #include <net/radix.h> 90 #else 91 #include "radix.h" 92 #define UNUSED __attribute__((unused)) 93 #define PATTRIB(f,l) __attribute__((format (printf,f,l))) 94 #endif 95 #include <net/if.h> 96 #include <net/route.h> 97 #include <net/if_dl.h> 98 #include <netinet/in.h> 99 #include <arpa/inet.h> 100 #define RIPVERSION RIPv2 101 #include <protocols/routed.h> 102 103 104 /* Type of an IP address. 105 * Some systems do not like to pass structures, so do not use in_addr. 106 * Some systems think a long has 64 bits, which would be a gross waste. 107 * So define it here so it can be changed for the target system. 108 * It should be defined somewhere netinet/in.h, but it is not. 109 */ 110 #ifdef sgi 111 #define naddr u_int32_t 112 #elif defined (__NetBSD__) 113 #define naddr u_int32_t 114 #define _HAVE_SA_LEN 115 #define _HAVE_SIN_LEN 116 #else 117 #define naddr u_long 118 #define _HAVE_SA_LEN 119 #define _HAVE_SIN_LEN 120 #endif 121 122 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 123 * the dstaddr of point-to-point interfaces. 124 */ 125 #ifdef __NetBSD__ 126 #define MCAST_PPP_BUG 127 #endif 128 129 #define DAY (24*60*60) 130 #define NEVER DAY /* a long time */ 131 #define EPOCH NEVER /* bias time by this to avoid <0 */ 132 133 /* Scan the kernel regularly to see if any interfaces have appeared or been 134 * turned off. These must be less than STALE_TIME. 135 */ 136 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 137 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 138 #define CHECK_QUIET_INTERVAL 300 /* when not */ 139 140 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 141 142 /* Metric used for fake default routes. It ought to be 15, but when 143 * processing advertised routes, previous versions of `routed` added 144 * to the received metric and discarded the route if the total was 16 145 * or larger. 146 */ 147 #define FAKE_METRIC (HOPCNT_INFINITY-2) 148 149 150 /* Router Discovery parameters */ 151 #ifndef sgi 152 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 153 #endif 154 #define MaxMaxAdvertiseInterval 1800 155 #define MinMaxAdvertiseInterval 4 156 #define DefMaxAdvertiseInterval 600 157 #define DEF_PreferenceLevel 0 158 #define MIN_PreferenceLevel 0x80000000 159 160 #define MAX_INITIAL_ADVERT_INTERVAL 16 161 #define MAX_INITIAL_ADVERTS 3 162 #define MAX_RESPONSE_DELAY 2 163 164 #define MAX_SOLICITATION_DELAY 1 165 #define SOLICITATION_INTERVAL 3 166 #define MAX_SOLICITATIONS 3 167 168 169 /* Bloated packet size for systems that simply add authentication to 170 * full-sized packets 171 */ 172 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 173 /* typical packet buffers */ 174 union pkt_buf { 175 char packet[OVER_MAXPACKETSIZE*2]; 176 struct rip rip; 177 }; 178 179 #define GNAME_LEN 64 /* assumed=64 in parms.c */ 180 /* bigger than IFNAMSIZ, with room for "external()" or "remote()" */ 181 #define IF_NAME_LEN (GNAME_LEN+15) 182 183 /* No more routes than this, to protect ourself in case something goes 184 * whacko and starts broadcasting zillions of bogus routes. 185 */ 186 #define MAX_ROUTES (128*1024) 187 extern int total_routes; 188 189 /* Main, daemon routing table structure 190 */ 191 struct rt_entry { 192 struct radix_node rt_nodes[2]; /* radix tree glue */ 193 u_int rt_state; 194 # define RS_IF 0x001 /* for network interface */ 195 # define RS_NET_INT 0x002 /* authority route */ 196 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 197 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 198 # define RS_SUBNET 0x008 /* subnet route from any source */ 199 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 200 # define RS_MHOME 0x020 /* from -m */ 201 # define RS_STATIC 0x040 /* from the kernel */ 202 # define RS_RDISC 0x080 /* from router discovery */ 203 struct sockaddr_in rt_dst_sock; 204 naddr rt_mask; 205 struct rt_spare { 206 struct interface *rts_ifp; 207 naddr rts_gate; /* forward packets here */ 208 naddr rts_router; /* on the authority of this router */ 209 char rts_metric; 210 u_short rts_tag; 211 time_t rts_time; /* timer to junk stale routes */ 212 u_int rts_de_ag; /* de-aggregation level */ 213 #define NUM_SPARES 4 214 } rt_spares[NUM_SPARES]; 215 u_int rt_seqno; /* when last changed */ 216 char rt_poison_metric; /* to notice maximum recently */ 217 time_t rt_poison_time; /* advertised metric */ 218 }; 219 #define rt_dst rt_dst_sock.sin_addr.s_addr 220 #define rt_ifp rt_spares[0].rts_ifp 221 #define rt_gate rt_spares[0].rts_gate 222 #define rt_router rt_spares[0].rts_router 223 #define rt_metric rt_spares[0].rts_metric 224 #define rt_tag rt_spares[0].rts_tag 225 #define rt_time rt_spares[0].rts_time 226 #define rt_de_ag rt_spares[0].rts_de_ag 227 228 #define HOST_MASK 0xffffffff 229 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 230 231 /* age all routes that 232 * are not from -g, -m, or static routes from the kernel 233 * not unbroken interface routes 234 * but not broken interfaces 235 * nor non-passive, remote interfaces that are not aliases 236 * (i.e. remote & metric=0) 237 */ 238 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 239 | RS_NET_SYN | RS_RDISC)) \ 240 && (!((rt_state) & RS_IF) \ 241 || (ifp) == 0 \ 242 || (((ifp)->int_state & IS_REMOTE) \ 243 && !((ifp)->int_state & IS_PASSIVE)))) 244 245 /* true if A is better than B 246 * Better if 247 * - A is not a poisoned route 248 * - and A is not stale 249 * - and A has a shorter path 250 * - or is the router speaking for itself 251 * - or the current route is equal but stale 252 * - or it is a host route advertised by a system for itself 253 */ 254 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 255 && now_stale <= (A)->rts_time \ 256 && ((A)->rts_metric < (B)->rts_metric \ 257 || ((A)->rts_gate == (A)->rts_router \ 258 && (B)->rts_gate != (B)->rts_router) \ 259 || ((A)->rts_metric == (B)->rts_metric \ 260 && now_stale > (B)->rts_time) \ 261 || (RT_ISHOST(rt) \ 262 && (rt)->rt_dst == (A)->rts_router \ 263 && (A)->rts_metric == (B)->rts_metric))) 264 265 266 /* An "interface" is similar to a kernel ifnet structure, except it also 267 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 268 */ 269 struct interface { 270 struct interface *int_next, **int_prev; 271 struct interface *int_ahash, **int_ahash_prev; 272 struct interface *int_bhash, **int_bhash_prev; 273 struct interface *int_rlink, **int_rlink_prev; 274 struct interface *int_nhash, **int_nhash_prev; 275 char int_name[IF_NAME_LEN+1]; 276 u_short int_index; 277 naddr int_addr; /* address on this host (net order) */ 278 naddr int_brdaddr; /* broadcast address (n) */ 279 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 280 naddr int_net; /* working network # (host order)*/ 281 naddr int_mask; /* working net mask (host order) */ 282 naddr int_ripv1_mask; /* for inferring a mask (n) */ 283 naddr int_std_addr; /* class A/B/C address (n) */ 284 naddr int_std_net; /* class A/B/C network (h) */ 285 naddr int_std_mask; /* class A/B/C netmask (h) */ 286 int int_rip_sock; /* for queries */ 287 int int_if_flags; /* some bits copied from kernel */ 288 u_int int_state; 289 time_t int_act_time; /* last thought healthy */ 290 time_t int_query_time; 291 u_short int_transitions; /* times gone up-down */ 292 char int_metric; 293 char int_d_metric; /* for faked default route */ 294 struct int_data { 295 u_int ipackets; /* previous network stats */ 296 u_int ierrors; 297 u_int opackets; 298 u_int oerrors; 299 #ifdef sgi 300 u_int odrops; 301 #endif 302 time_t ts; /* timestamp on network stats */ 303 } int_data; 304 # define MAX_AUTH_KEYS 5 305 struct auth { /* authentication info */ 306 u_int16_t type; 307 u_char key[RIP_AUTH_PW_LEN]; 308 u_char keyid; 309 time_t start, end; 310 } int_auth[MAX_AUTH_KEYS]; 311 /* router discovery parameters */ 312 int int_rdisc_pref; /* signed preference to advertise */ 313 int int_rdisc_int; /* MaxAdvertiseInterval */ 314 int int_rdisc_cnt; 315 struct timeval int_rdisc_timer; 316 }; 317 318 /* bits in int_state */ 319 #define IS_ALIAS 0x0000001 /* interface alias */ 320 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 321 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 322 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 323 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 324 #define IS_CHECKED 0x0000020 /* still exists */ 325 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 326 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 327 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 328 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 329 #define IS_BROKE 0x0000400 /* seems to be broken */ 330 #define IS_SICK 0x0000800 /* seems to be broken */ 331 #define IS_DUP 0x0001000 /* has a duplicate address */ 332 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 333 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 334 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 335 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 336 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 337 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 338 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 339 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 340 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 341 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 342 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 343 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 344 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 345 #define IS_NO_RIP_MCAST 0x0100000 /* broadcast RIPv2 */ 346 #define IS_NO_ADV_IN 0x0200000 /* do not listen to advertisements */ 347 #define IS_NO_SOL_OUT 0x0400000 /* send no solicitations */ 348 #define IS_SOL_OUT 0x0800000 /* send solicitations */ 349 #define GROUP_IS_SOL_OUT (IS_SOL_OUT | IS_NO_SOL_OUT) 350 #define IS_NO_ADV_OUT 0x1000000 /* do not advertise rdisc */ 351 #define IS_ADV_OUT 0x2000000 /* advertise rdisc */ 352 #define GROUP_IS_ADV_OUT (IS_NO_ADV_OUT | IS_ADV_OUT) 353 #define IS_BCAST_RDISC 0x4000000 /* broadcast instead of multicast */ 354 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 355 #define IS_PM_RDISC 0x8000000 /* poor-man's router discovery */ 356 357 #define iff_up(f) ((f) & IFF_UP) 358 359 360 /* Information for aggregating routes */ 361 #define NUM_AG_SLOTS 32 362 struct ag_info { 363 struct ag_info *ag_fine; /* slot with finer netmask */ 364 struct ag_info *ag_cors; /* more coarse netmask */ 365 naddr ag_dst_h; /* destination in host byte order */ 366 naddr ag_mask; 367 naddr ag_gate; 368 naddr ag_nhop; 369 char ag_metric; /* metric to be advertised */ 370 char ag_pref; /* aggregate based on this */ 371 u_int ag_seqno; 372 u_short ag_tag; 373 u_short ag_state; 374 #define AGS_SUPPRESS 0x001 /* combine with coarser mask */ 375 #define AGS_AGGREGATE 0x002 /* synthesize combined routes */ 376 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 377 #define AGS_REDUN1 0x008 378 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 379 == (AGS_REDUN0 | AGS_REDUN1)) 380 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 381 #define AGS_IF 0x020 /* for an interface */ 382 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 383 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 384 * has the finer netmask */ 385 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 386 * has the coarser netmasks */ 387 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 388 389 /* some bits are set if they are set on either route */ 390 #define AGS_AGGREGATE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 391 AGS_SUPPRESS | AGS_CORS_GATE) 392 }; 393 394 395 /* parameters for interfaces */ 396 extern struct parm { 397 struct parm *parm_next; 398 char parm_name[IF_NAME_LEN+1]; 399 naddr parm_net; 400 naddr parm_mask; 401 402 char parm_d_metric; 403 u_int parm_int_state; 404 int parm_rdisc_pref; /* signed IRDP preference */ 405 int parm_rdisc_int; /* IRDP advertising interval */ 406 struct auth parm_auth[MAX_AUTH_KEYS]; 407 } *parms; 408 409 /* authority for internal networks */ 410 extern struct intnet { 411 struct intnet *intnet_next; 412 naddr intnet_addr; /* network byte order */ 413 naddr intnet_mask; 414 char intnet_metric; 415 } *intnets; 416 417 /* defined RIPv1 netmasks */ 418 extern struct r1net { 419 struct r1net *r1net_next; 420 naddr r1net_net; /* host order */ 421 naddr r1net_match; 422 naddr r1net_mask; 423 } *r1nets; 424 425 /* trusted routers */ 426 extern struct tgate { 427 struct tgate *tgate_next; 428 naddr tgate_addr; 429 #define MAX_TGATE_NETS 32 430 struct tgate_net { 431 naddr net; /* host order */ 432 naddr mask; 433 } tgate_nets[MAX_TGATE_NETS]; 434 } *tgates; 435 436 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 437 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 438 439 /* common output buffers */ 440 extern struct ws_buf { 441 struct rip *buf; 442 struct netinfo *n; 443 struct netinfo *base; 444 struct netinfo *lim; 445 enum output_type type; 446 } v12buf, v2buf; 447 448 extern pid_t mypid; 449 extern naddr myaddr; /* main address of this system */ 450 451 extern int stopint; /* !=0 to stop */ 452 453 extern int sock_max; 454 extern int rip_sock; /* RIP socket */ 455 extern struct interface *rip_sock_mcast; /* current multicast interface */ 456 extern int rt_sock; /* routing socket */ 457 extern int rt_sock_seqno; 458 extern int rdisc_sock; /* router-discovery raw socket */ 459 460 extern int seqno; /* sequence number for messages */ 461 extern int supplier; /* process should supply updates */ 462 extern int supplier_set; /* -s or -q requested */ 463 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 464 extern int ridhosts; /* 1=reduce host routes */ 465 extern int mhome; /* 1=want multi-homed host route */ 466 extern int advertise_mhome; /* 1=must continue advertising it */ 467 extern int auth_ok; /* 1=ignore auth if we do not care */ 468 469 extern struct timeval clk; /* system clock's idea of time */ 470 extern struct timeval epoch; /* system clock when started */ 471 extern struct timeval now; /* current idea of time */ 472 extern time_t now_stale; 473 extern time_t now_expire; 474 extern time_t now_garbage; 475 476 extern struct timeval next_bcast; /* next general broadcast */ 477 extern struct timeval age_timer; /* next check of old routes */ 478 extern struct timeval no_flash; /* inhibit flash update until then */ 479 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 480 extern int rdisc_ok; /* using solicited route */ 481 482 extern struct timeval ifinit_timer; /* time to check interfaces */ 483 484 extern naddr loopaddr; /* our address on loopback */ 485 extern int tot_interfaces; /* # of remote and local interfaces */ 486 extern int rip_interfaces; /* # of interfaces doing RIP */ 487 extern struct interface *ifnet; /* all interfaces */ 488 extern struct interface *remote_if; /* remote interfaces */ 489 extern int have_ripv1_out; /* have a RIPv1 interface */ 490 extern int have_ripv1_in; 491 extern int need_flash; /* flash update needed */ 492 extern struct timeval need_kern; /* need to update kernel table */ 493 extern u_int update_seqno; /* a route has changed */ 494 495 extern int tracelevel, new_tracelevel; 496 #define MAX_TRACELEVEL 4 497 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 498 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 499 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 500 #define TRACEACTIONS (tracelevel != 0) 501 extern FILE *ftrace; /* output trace file */ 502 extern char inittracename[MAXPATHLEN+1]; 503 504 extern struct radix_node_head *rhead; 505 506 507 #ifdef sgi 508 /* Fix conflicts */ 509 #define dup2(x,y) BSDdup2(x,y) 510 #endif /* sgi */ 511 512 extern void fix_sock(int, const char *); 513 extern void fix_select(void); 514 extern void rip_off(void); 515 extern void rip_on(struct interface *); 516 517 extern void bufinit(void); 518 extern int output(enum output_type, struct sockaddr_in *, 519 struct interface *, struct rip *, int); 520 extern void clr_ws_buf(struct ws_buf *, struct auth *); 521 extern void rip_query(void); 522 extern void rip_bcast(int); 523 extern void supply(struct sockaddr_in *, struct interface *, 524 enum output_type, int, int, int); 525 526 extern void msglog(const char *, ...) PATTRIB(1,2); 527 struct msg_limit { 528 time_t reuse; 529 struct msg_sub { 530 naddr addr; 531 time_t until; 532 # define MSG_SUBJECT_N 8 533 } subs[MSG_SUBJECT_N]; 534 }; 535 extern void msglim(struct msg_limit *, naddr, 536 const char *, ...) PATTRIB(3,4); 537 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 538 extern void logbad(int, const char *, ...) PATTRIB(2,3); 539 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 540 #ifdef DEBUG 541 #define DBGERR(dump,msg) BADERR(dump,msg) 542 #else 543 #define DBGERR(dump,msg) LOGERR(msg) 544 #endif 545 extern char *naddr_ntoa(naddr); 546 extern const char *saddr_ntoa(struct sockaddr *); 547 548 extern void *rtmalloc(size_t, const char *); 549 extern void timevaladd(struct timeval *, struct timeval *); 550 extern void intvl_random(struct timeval *, u_long, u_long); 551 extern int getnet(char *, naddr *, naddr *); 552 extern int gethost(char *, naddr *); 553 extern void gwkludge(void); 554 extern const char *parse_parms(char *, int); 555 extern const char *check_parms(struct parm *); 556 extern void get_parms(struct interface *); 557 558 extern void lastlog(void); 559 extern void trace_close(int); 560 extern void set_tracefile(const char *, const char *, int); 561 extern void tracelevel_msg(const char *, int); 562 extern void trace_off(const char*, ...) PATTRIB(1,2); 563 extern void set_tracelevel(void); 564 extern void trace_flush(void); 565 extern void trace_misc(const char *, ...) PATTRIB(1,2); 566 extern void trace_act(const char *, ...) PATTRIB(1,2); 567 extern void trace_pkt(const char *, ...) PATTRIB(1,2); 568 extern void trace_add_del(const char *, struct rt_entry *); 569 extern void trace_change(struct rt_entry *, u_int, struct rt_spare *, 570 const char *); 571 extern void trace_if(const char *, struct interface *); 572 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 573 struct rt_spare *); 574 extern void trace_rip(const char*, const char*, struct sockaddr_in *, 575 struct interface *, struct rip *, int); 576 extern char *addrname(naddr, naddr, int); 577 extern char *rtname(naddr, naddr, naddr); 578 579 extern void rdisc_age(naddr); 580 extern void set_rdisc_mg(struct interface *, int); 581 extern void set_supplier(void); 582 extern void if_bad_rdisc(struct interface *); 583 extern void if_ok_rdisc(struct interface *); 584 extern void read_rip(int, struct interface *); 585 extern void read_rt(void); 586 extern void read_d(void); 587 extern void rdisc_adv(void); 588 extern void rdisc_sol(void); 589 590 extern void sigalrm(int); 591 extern void sigterm(int); 592 593 extern void sigtrace_on(int); 594 extern void sigtrace_off(int); 595 596 extern void flush_kern(void); 597 extern void age(naddr); 598 599 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 600 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 601 u_short, u_short, void (*)(struct ag_info *)); 602 extern void del_static(naddr, naddr, naddr, int); 603 extern void del_redirects(naddr, time_t); 604 extern struct rt_entry *rtget(naddr, naddr); 605 extern struct rt_entry *rtfind(naddr); 606 extern void rtinit(void); 607 extern void rtadd(naddr, naddr, u_int, struct rt_spare *); 608 extern void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 609 extern void rtdelete(struct rt_entry *); 610 extern void rts_delete(struct rt_entry *, struct rt_spare *); 611 extern void rtbad_sub(struct rt_entry *); 612 extern void rtswitch(struct rt_entry *, struct rt_spare *); 613 extern void rtbad(struct rt_entry *); 614 615 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 616 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 617 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 618 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 619 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 620 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 621 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 622 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 623 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 624 int); 625 626 extern naddr std_mask(naddr); 627 extern naddr ripv1_mask_net(naddr, struct interface *); 628 extern naddr ripv1_mask_host(naddr,struct interface *); 629 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 630 extern int check_dst(naddr); 631 extern struct interface *check_dup(naddr, naddr, naddr, int); 632 extern int check_remote(struct interface *); 633 extern int addrouteforif(struct interface *); 634 extern void ifinit(void); 635 extern int walk_bad(struct radix_node *, struct walkarg *); 636 extern int if_ok(struct interface *, const char *); 637 extern void if_sick(struct interface *); 638 extern void if_bad(struct interface *); 639 extern void if_link(struct interface *); 640 extern struct interface *ifwithaddr(naddr, int, int); 641 extern struct interface *ifwithname(char *, naddr); 642 extern struct interface *ifwithindex(u_short, int); 643 extern struct interface *iflookup(naddr); 644 645 extern struct auth *find_auth(struct interface *); 646 extern void end_md5_auth(struct ws_buf *, struct auth *); 647 648 #define MD5_DIGEST_LEN 16 649 typedef struct { 650 u_int32_t state[4]; /* state (ABCD) */ 651 u_int32_t count[2]; /* # of bits, modulo 2^64 (LSB 1st) */ 652 unsigned char buffer[64]; /* input buffer */ 653 } MD5_CTX; 654 extern void MD5Init(MD5_CTX*); 655 extern void MD5Update(MD5_CTX*, u_char*, u_int); 656 extern void MD5Final(u_char[MD5_DIGEST_LEN], MD5_CTX*); 657