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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)defs.h 8.1 (Berkeley) 6/5/93 30 * 31 * $FreeBSD: src/sbin/routed/defs.h,v 1.13 1999/09/05 17:49:11 peter Exp $ 32 */ 33 34 /* Definitions for RIPv2 routing process. 35 * 36 * This code is based on the 4.4BSD `routed` daemon, with extensions to 37 * support: 38 * RIPv2, including variable length subnet masks. 39 * Router Discovery 40 * aggregate routes in the kernel tables. 41 * aggregate advertised routes. 42 * maintain spare routes for faster selection of another gateway 43 * when the current gateway dies. 44 * timers on routes with second granularity so that selection 45 * of a new route does not wait 30-60 seconds. 46 * tolerance of static routes. 47 * tell the kernel hop counts 48 * do not advertise if ipforwarding=0 49 * 50 * The vestigial support for other protocols has been removed. There 51 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 52 * other protocols. The result is far smaller, faster, cleaner, and 53 * perhaps understandable. 54 * 55 * The accumulation of special flags and kludges added over the many 56 * years have been simplified and integrated. 57 */ 58 59 #include <stdio.h> 60 #include <netdb.h> 61 #include <stdlib.h> 62 #include <unistd.h> 63 #include <errno.h> 64 #include <string.h> 65 #include <stdarg.h> 66 #include <syslog.h> 67 #include <time.h> 68 #include <sys/cdefs.h> 69 #include <sys/time.h> 70 #include <sys/types.h> 71 #include <sys/param.h> 72 #include <sys/ioctl.h> 73 #include <sys/sysctl.h> 74 #include <sys/socket.h> 75 #include "radix.h" 76 #include <net/if.h> 77 #include <net/route.h> 78 #include <net/if_dl.h> 79 #include <netinet/in.h> 80 #include <arpa/inet.h> 81 #define RIPVERSION RIPv2 82 #include <protocols/routed.h> 83 #include <openssl/md5.h> 84 85 86 /* Type of an IP address. 87 * Some systems do not like to pass structures, so do not use in_addr. 88 * Some systems think a long has 64 bits, which would be a gross waste. 89 * So define it here so it can be changed for the target system. 90 * It should be defined somewhere netinet/in.h, but it is not. 91 */ 92 #if defined (__NetBSD__) 93 #define naddr u_int32_t 94 #define _HAVE_SA_LEN 95 #define _HAVE_SIN_LEN 96 #else 97 #define naddr u_long 98 #define _HAVE_SA_LEN 99 #define _HAVE_SIN_LEN 100 #endif 101 102 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 103 * the dstaddr of point-to-point interfaces. 104 */ 105 #ifdef __NetBSD__ 106 #define MCAST_PPP_BUG 107 #endif 108 109 #define DAY (24*60*60) 110 #define NEVER DAY /* a long time */ 111 #define EPOCH NEVER /* bias time by this to avoid <0 */ 112 113 /* Scan the kernel regularly to see if any interfaces have appeared or been 114 * turned off. These must be less than STALE_TIME. 115 */ 116 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 117 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 118 #define CHECK_QUIET_INTERVAL 300 /* when not */ 119 120 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 121 122 /* Metric used for fake default routes. It ought to be 15, but when 123 * processing advertised routes, previous versions of `routed` added 124 * to the received metric and discarded the route if the total was 16 125 * or larger. 126 */ 127 #define FAKE_METRIC (HOPCNT_INFINITY-2) 128 129 130 /* Router Discovery parameters */ 131 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 132 #define MaxMaxAdvertiseInterval 1800 133 #define MinMaxAdvertiseInterval 4 134 #define DefMaxAdvertiseInterval 600 135 #define DEF_PreferenceLevel 0 136 #define MIN_PreferenceLevel 0x80000000 137 138 #define MAX_INITIAL_ADVERT_INTERVAL 16 139 #define MAX_INITIAL_ADVERTS 3 140 #define MAX_RESPONSE_DELAY 2 141 142 #define MAX_SOLICITATION_DELAY 1 143 #define SOLICITATION_INTERVAL 3 144 #define MAX_SOLICITATIONS 3 145 146 147 /* Bloated packet size for systems that simply add authentication to 148 * full-sized packets 149 */ 150 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 151 /* typical packet buffers */ 152 union pkt_buf { 153 char packet[OVER_MAXPACKETSIZE*2]; 154 struct rip rip; 155 }; 156 157 #define GNAME_LEN 64 /* assumed=64 in parms.c */ 158 /* bigger than IFNAMSIZ, with room for "external()" or "remote()" */ 159 #define IF_NAME_LEN (GNAME_LEN+15) 160 161 /* No more routes than this, to protect ourself in case something goes 162 * whacko and starts broadcasting zillions of bogus routes. 163 */ 164 #define MAX_ROUTES (128*1024) 165 extern int total_routes; 166 167 /* Main, daemon routing table structure 168 */ 169 struct rt_entry { 170 struct radix_node rt_nodes[2]; /* radix tree glue */ 171 u_int rt_state; 172 # define RS_IF 0x001 /* for network interface */ 173 # define RS_NET_INT 0x002 /* authority route */ 174 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 175 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 176 # define RS_SUBNET 0x008 /* subnet route from any source */ 177 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 178 # define RS_MHOME 0x020 /* from -m */ 179 # define RS_STATIC 0x040 /* from the kernel */ 180 # define RS_RDISC 0x080 /* from router discovery */ 181 struct sockaddr_in rt_dst_sock; 182 naddr rt_mask; 183 struct rt_spare { 184 struct interface *rts_ifp; 185 naddr rts_gate; /* forward packets here */ 186 naddr rts_router; /* on the authority of this router */ 187 char rts_metric; 188 u_short rts_tag; 189 time_t rts_time; /* timer to junk stale routes */ 190 u_int rts_de_ag; /* de-aggregation level */ 191 #define NUM_SPARES 4 192 } rt_spares[NUM_SPARES]; 193 u_int rt_seqno; /* when last changed */ 194 char rt_poison_metric; /* to notice maximum recently */ 195 time_t rt_poison_time; /* advertised metric */ 196 }; 197 #define rt_dst rt_dst_sock.sin_addr.s_addr 198 #define rt_ifp rt_spares[0].rts_ifp 199 #define rt_gate rt_spares[0].rts_gate 200 #define rt_router rt_spares[0].rts_router 201 #define rt_metric rt_spares[0].rts_metric 202 #define rt_tag rt_spares[0].rts_tag 203 #define rt_time rt_spares[0].rts_time 204 #define rt_de_ag rt_spares[0].rts_de_ag 205 206 #define HOST_MASK 0xffffffff 207 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 208 209 /* age all routes that 210 * are not from -g, -m, or static routes from the kernel 211 * not unbroken interface routes 212 * but not broken interfaces 213 * nor non-passive, remote interfaces that are not aliases 214 * (i.e. remote & metric=0) 215 */ 216 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 217 | RS_NET_SYN | RS_RDISC)) \ 218 && (!((rt_state) & RS_IF) \ 219 || (ifp) == 0 \ 220 || (((ifp)->int_state & IS_REMOTE) \ 221 && !((ifp)->int_state & IS_PASSIVE)))) 222 223 /* true if A is better than B 224 * Better if 225 * - A is not a poisoned route 226 * - and A is not stale 227 * - and A has a shorter path 228 * - or is the router speaking for itself 229 * - or the current route is equal but stale 230 * - or it is a host route advertised by a system for itself 231 */ 232 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 233 && now_stale <= (A)->rts_time \ 234 && ((A)->rts_metric < (B)->rts_metric \ 235 || ((A)->rts_gate == (A)->rts_router \ 236 && (B)->rts_gate != (B)->rts_router) \ 237 || ((A)->rts_metric == (B)->rts_metric \ 238 && now_stale > (B)->rts_time) \ 239 || (RT_ISHOST(rt) \ 240 && (rt)->rt_dst == (A)->rts_router \ 241 && (A)->rts_metric == (B)->rts_metric))) 242 243 244 /* An "interface" is similar to a kernel ifnet structure, except it also 245 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 246 */ 247 struct interface { 248 struct interface *int_next, **int_prev; 249 struct interface *int_ahash, **int_ahash_prev; 250 struct interface *int_bhash, **int_bhash_prev; 251 struct interface *int_rlink, **int_rlink_prev; 252 struct interface *int_nhash, **int_nhash_prev; 253 char int_name[IF_NAME_LEN+1]; 254 u_short int_index; 255 naddr int_addr; /* address on this host (net order) */ 256 naddr int_brdaddr; /* broadcast address (n) */ 257 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 258 naddr int_net; /* working network # (host order)*/ 259 naddr int_mask; /* working net mask (host order) */ 260 naddr int_ripv1_mask; /* for inferring a mask (n) */ 261 naddr int_std_addr; /* class A/B/C address (n) */ 262 naddr int_std_net; /* class A/B/C network (h) */ 263 naddr int_std_mask; /* class A/B/C netmask (h) */ 264 int int_rip_sock; /* for queries */ 265 int int_if_flags; /* some bits copied from kernel */ 266 u_int int_state; 267 time_t int_act_time; /* last thought healthy */ 268 time_t int_query_time; 269 u_short int_transitions; /* times gone up-down */ 270 char int_metric; 271 char int_d_metric; /* for faked default route */ 272 struct int_data { 273 u_int ipackets; /* previous network stats */ 274 u_int ierrors; 275 u_int opackets; 276 u_int oerrors; 277 time_t ts; /* timestamp on network stats */ 278 } int_data; 279 # define MAX_AUTH_KEYS 5 280 struct auth { /* authentication info */ 281 u_int16_t type; 282 u_char key[RIP_AUTH_PW_LEN]; 283 u_char keyid; 284 time_t start, end; 285 } int_auth[MAX_AUTH_KEYS]; 286 /* router discovery parameters */ 287 int int_rdisc_pref; /* signed preference to advertise */ 288 int int_rdisc_int; /* MaxAdvertiseInterval */ 289 int int_rdisc_cnt; 290 struct timeval int_rdisc_timer; 291 }; 292 293 /* bits in int_state */ 294 #define IS_ALIAS 0x0000001 /* interface alias */ 295 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 296 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 297 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 298 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 299 #define IS_CHECKED 0x0000020 /* still exists */ 300 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 301 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 302 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 303 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 304 #define IS_BROKE 0x0000400 /* seems to be broken */ 305 #define IS_SICK 0x0000800 /* seems to be broken */ 306 #define IS_DUP 0x0001000 /* has a duplicate address */ 307 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 308 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 309 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 310 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 311 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 312 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 313 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 314 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 315 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 316 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 317 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 318 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 319 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 320 #define IS_NO_RIP_MCAST 0x0100000 /* broadcast RIPv2 */ 321 #define IS_NO_ADV_IN 0x0200000 /* do not listen to advertisements */ 322 #define IS_NO_SOL_OUT 0x0400000 /* send no solicitations */ 323 #define IS_SOL_OUT 0x0800000 /* send solicitations */ 324 #define GROUP_IS_SOL_OUT (IS_SOL_OUT | IS_NO_SOL_OUT) 325 #define IS_NO_ADV_OUT 0x1000000 /* do not advertise rdisc */ 326 #define IS_ADV_OUT 0x2000000 /* advertise rdisc */ 327 #define GROUP_IS_ADV_OUT (IS_NO_ADV_OUT | IS_ADV_OUT) 328 #define IS_BCAST_RDISC 0x4000000 /* broadcast instead of multicast */ 329 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 330 #define IS_PM_RDISC 0x8000000 /* poor-man's router discovery */ 331 332 #define iff_up(f) ((f) & IFF_UP) 333 334 335 /* Information for aggregating routes */ 336 #define NUM_AG_SLOTS 32 337 struct ag_info { 338 struct ag_info *ag_fine; /* slot with finer netmask */ 339 struct ag_info *ag_cors; /* more coarse netmask */ 340 naddr ag_dst_h; /* destination in host byte order */ 341 naddr ag_mask; 342 naddr ag_gate; 343 naddr ag_nhop; 344 char ag_metric; /* metric to be advertised */ 345 char ag_pref; /* aggregate based on this */ 346 u_int ag_seqno; 347 u_short ag_tag; 348 u_short ag_state; 349 #define AGS_SUPPRESS 0x001 /* combine with coarser mask */ 350 #define AGS_AGGREGATE 0x002 /* synthesize combined routes */ 351 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 352 #define AGS_REDUN1 0x008 353 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 354 == (AGS_REDUN0 | AGS_REDUN1)) 355 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 356 #define AGS_IF 0x020 /* for an interface */ 357 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 358 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 359 * has the finer netmask */ 360 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 361 * has the coarser netmasks */ 362 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 363 364 /* some bits are set if they are set on either route */ 365 #define AGS_AGGREGATE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 366 AGS_SUPPRESS | AGS_CORS_GATE) 367 }; 368 369 370 /* parameters for interfaces */ 371 extern struct parm { 372 struct parm *parm_next; 373 char parm_name[IF_NAME_LEN+1]; 374 naddr parm_net; 375 naddr parm_mask; 376 377 char parm_d_metric; 378 u_int parm_int_state; 379 int parm_rdisc_pref; /* signed IRDP preference */ 380 int parm_rdisc_int; /* IRDP advertising interval */ 381 struct auth parm_auth[MAX_AUTH_KEYS]; 382 } *parms; 383 384 /* authority for internal networks */ 385 extern struct intnet { 386 struct intnet *intnet_next; 387 naddr intnet_addr; /* network byte order */ 388 naddr intnet_mask; 389 char intnet_metric; 390 } *intnets; 391 392 /* defined RIPv1 netmasks */ 393 extern struct r1net { 394 struct r1net *r1net_next; 395 naddr r1net_net; /* host order */ 396 naddr r1net_match; 397 naddr r1net_mask; 398 } *r1nets; 399 400 /* trusted routers */ 401 extern struct tgate { 402 struct tgate *tgate_next; 403 naddr tgate_addr; 404 #define MAX_TGATE_NETS 32 405 struct tgate_net { 406 naddr net; /* host order */ 407 naddr mask; 408 } tgate_nets[MAX_TGATE_NETS]; 409 } *tgates; 410 411 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 412 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 413 414 /* common output buffers */ 415 extern struct ws_buf { 416 struct rip *buf; 417 struct netinfo *n; 418 struct netinfo *base; 419 struct netinfo *lim; 420 enum output_type type; 421 } v12buf, v2buf; 422 423 extern pid_t mypid; 424 extern naddr myaddr; /* main address of this system */ 425 426 extern int stopint; /* !=0 to stop */ 427 428 extern int sock_max; 429 extern int rip_sock; /* RIP socket */ 430 extern struct interface *rip_sock_mcast; /* current multicast interface */ 431 extern int rt_sock; /* routing socket */ 432 extern int rt_sock_seqno; 433 extern int rdisc_sock; /* router-discovery raw socket */ 434 435 extern int seqno; /* sequence number for messages */ 436 extern int supplier; /* process should supply updates */ 437 extern int supplier_set; /* -s or -q requested */ 438 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 439 extern int ridhosts; /* 1=reduce host routes */ 440 extern int mhome; /* 1=want multi-homed host route */ 441 extern int advertise_mhome; /* 1=must continue advertising it */ 442 extern int auth_ok; /* 1=ignore auth if we do not care */ 443 444 extern struct timeval clk; /* system clock's idea of time */ 445 extern struct timeval epoch; /* system clock when started */ 446 extern struct timeval now; /* current idea of time */ 447 extern time_t now_stale; 448 extern time_t now_expire; 449 extern time_t now_garbage; 450 451 extern struct timeval next_bcast; /* next general broadcast */ 452 extern struct timeval age_timer; /* next check of old routes */ 453 extern struct timeval no_flash; /* inhibit flash update until then */ 454 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 455 extern int rdisc_ok; /* using solicited route */ 456 457 extern struct timeval ifinit_timer; /* time to check interfaces */ 458 459 extern naddr loopaddr; /* our address on loopback */ 460 extern int tot_interfaces; /* # of remote and local interfaces */ 461 extern int rip_interfaces; /* # of interfaces doing RIP */ 462 extern struct interface *ifnet; /* all interfaces */ 463 extern struct interface *remote_if; /* remote interfaces */ 464 extern int have_ripv1_out; /* have a RIPv1 interface */ 465 extern int have_ripv1_in; 466 extern int need_flash; /* flash update needed */ 467 extern struct timeval need_kern; /* need to update kernel table */ 468 extern u_int update_seqno; /* a route has changed */ 469 470 extern int tracelevel, new_tracelevel; 471 #define MAX_TRACELEVEL 4 472 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 473 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 474 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 475 #define TRACEACTIONS (tracelevel != 0) 476 extern FILE *ftrace; /* output trace file */ 477 extern char inittracename[MAXPATHLEN+1]; 478 479 extern struct radix_node_head *rhead; 480 481 482 extern void fix_sock(int, const char *); 483 extern void fix_select(void); 484 extern void rip_off(void); 485 extern void rip_on(struct interface *); 486 487 extern void bufinit(void); 488 extern int output(enum output_type, struct sockaddr_in *, 489 struct interface *, struct rip *, int); 490 extern void clr_ws_buf(struct ws_buf *, struct auth *); 491 extern void rip_query(void); 492 extern void rip_bcast(int); 493 extern void supply(struct sockaddr_in *, struct interface *, 494 enum output_type, int, int, int); 495 496 extern void msglog(const char *, ...) __printflike(1, 2); 497 struct msg_limit { 498 time_t reuse; 499 struct msg_sub { 500 naddr addr; 501 time_t until; 502 # define MSG_SUBJECT_N 8 503 } subs[MSG_SUBJECT_N]; 504 }; 505 extern void msglim(struct msg_limit *, naddr, 506 const char *, ...) __printflike(3, 4); 507 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 508 extern void logbad(int, const char *, ...) __dead2 __printflike(2, 3); 509 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 510 #ifdef DEBUG 511 #define DBGERR(dump,msg) BADERR(dump,msg) 512 #else 513 #define DBGERR(dump,msg) LOGERR(msg) 514 #endif 515 extern char *naddr_ntoa(naddr); 516 extern const char *saddr_ntoa(struct sockaddr *); 517 518 extern void *rtmalloc(size_t, const char *); 519 extern void timevaladd(struct timeval *, struct timeval *); 520 extern void intvl_random(struct timeval *, u_long, u_long); 521 extern int getnet(char *, naddr *, naddr *); 522 extern int gethost(char *, naddr *); 523 extern void gwkludge(void); 524 extern const char *parse_parms(char *, int); 525 extern const char *check_parms(struct parm *); 526 extern void get_parms(struct interface *); 527 528 extern void lastlog(void); 529 extern void trace_close(int); 530 extern void set_tracefile(const char *, const char *, int); 531 extern void tracelevel_msg(const char *, int); 532 extern void trace_off(const char*, ...) __printflike(1, 2); 533 extern void set_tracelevel(void); 534 extern void trace_flush(void); 535 extern void trace_misc(const char *, ...) __printflike(1, 2); 536 extern void trace_act(const char *, ...) __printflike(1, 2); 537 extern void trace_pkt(const char *, ...) __printflike(1, 2); 538 extern void trace_add_del(const char *, struct rt_entry *); 539 extern void trace_change(struct rt_entry *, u_int, struct rt_spare *, 540 const char *); 541 extern void trace_if(const char *, struct interface *); 542 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 543 struct rt_spare *); 544 extern void trace_rip(const char*, const char*, struct sockaddr_in *, 545 struct interface *, struct rip *, int); 546 extern char *addrname(naddr, naddr, int); 547 extern char *rtname(naddr, naddr, naddr); 548 549 extern void rdisc_age(naddr); 550 extern void set_rdisc_mg(struct interface *, int); 551 extern void set_supplier(void); 552 extern void if_bad_rdisc(struct interface *); 553 extern void if_ok_rdisc(struct interface *); 554 extern void read_rip(int, struct interface *); 555 extern void read_rt(void); 556 extern void read_d(void); 557 extern void rdisc_adv(void); 558 extern void rdisc_sol(void); 559 560 extern void sigalrm(int); 561 extern void sigterm(int); 562 563 extern void sigtrace_on(int); 564 extern void sigtrace_off(int); 565 566 extern void flush_kern(void); 567 extern void age(naddr); 568 569 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 570 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 571 u_short, u_short, void (*)(struct ag_info *)); 572 extern void del_static(naddr, naddr, naddr, int); 573 extern void del_redirects(naddr, time_t); 574 extern struct rt_entry *rtget(naddr, naddr); 575 extern struct rt_entry *rtfind(naddr); 576 extern void rtinit(void); 577 extern void rtadd(naddr, naddr, u_int, struct rt_spare *); 578 extern void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 579 extern void rtdelete(struct rt_entry *); 580 extern void rts_delete(struct rt_entry *, struct rt_spare *); 581 extern void rtbad_sub(struct rt_entry *); 582 extern void rtswitch(struct rt_entry *, struct rt_spare *); 583 extern void rtbad(struct rt_entry *); 584 585 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 586 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 587 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 588 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 589 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 590 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 591 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 592 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 593 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 594 int); 595 596 extern naddr std_mask(naddr); 597 extern naddr ripv1_mask_net(naddr, struct interface *); 598 extern naddr ripv1_mask_host(naddr,struct interface *); 599 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 600 extern int check_dst(naddr); 601 extern struct interface *check_dup(naddr, naddr, naddr, int); 602 extern int check_remote(struct interface *); 603 extern int addrouteforif(struct interface *); 604 extern void ifinit(void); 605 extern int walk_bad(struct radix_node *, struct walkarg *); 606 extern int if_ok(struct interface *, const char *); 607 extern void if_sick(struct interface *); 608 extern void if_bad(struct interface *); 609 extern void if_link(struct interface *); 610 extern struct interface *ifwithaddr(naddr, int, int); 611 extern struct interface *ifwithname(char *, naddr); 612 extern struct interface *ifwithindex(u_short, int); 613 extern struct interface *iflookup(naddr); 614 615 extern struct auth *find_auth(struct interface *); 616 extern void end_md5_auth(struct ws_buf *, struct auth *); 617