defs.h revision 1.14
1 /* $NetBSD: defs.h,v 1.14 1997/02/03 22:02:53 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)defs.h 8.1 (Berkeley) 6/5/93 36 */ 37 38 /* Definitions for RIPv2 routing process. 39 * 40 * This code is based on the 4.4BSD `routed` daemon, with extensions to 41 * support: 42 * RIPv2, including variable length subnet masks. 43 * Router Discovery 44 * aggregate routes in the kernel tables. 45 * aggregate advertised routes. 46 * maintain spare routes for faster selection of another gateway 47 * when the current gateway dies. 48 * timers on routes with second granularity so that selection 49 * of a new route does not wait 30-60 seconds. 50 * tolerance of static routes. 51 * tell the kernel hop counts 52 * do not advertise if ipforwarding=0 53 * 54 * The vestigual support for other protocols has been removed. There 55 * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 56 * other protocols. The result is far smaller, faster, cleaner, and 57 * perhaps understandable. 58 * 59 * The accumulation of special flags and kludges added over the many 60 * years have been simplified and integrated. 61 */ 62 63 #include <stdio.h> 64 #include <netdb.h> 65 #include <stdlib.h> 66 #include <unistd.h> 67 #include <errno.h> 68 #include <string.h> 69 #ifdef sgi 70 #include <strings.h> 71 #include <bstring.h> 72 #endif 73 #include <stdarg.h> 74 #include <syslog.h> 75 #include <time.h> 76 #include <sys/time.h> 77 #include <sys/types.h> 78 #include <sys/param.h> 79 #include <sys/ioctl.h> 80 #include <sys/sysctl.h> 81 #include <sys/socket.h> 82 #ifdef sgi 83 #include <net/radix.h> 84 #else 85 #include "radix.h" 86 #endif 87 #include <net/if.h> 88 #include <net/route.h> 89 #include <net/if_dl.h> 90 #include <netinet/in.h> 91 #include <arpa/inet.h> 92 #define RIPVERSION RIPv2 93 #include <protocols/routed.h> 94 95 /* Type of an IP address. 96 * Some systems do not like to pass structures, so do not use in_addr. 97 * Some systems think a long has 64 bits, which would be a gross waste. 98 * So define it here so it can be changed for the target system. 99 * It should be defined somewhere netinet/in.h, but it is not. 100 */ 101 #ifdef sgi 102 #define naddr __uint32_t 103 #elif defined (__NetBSD__) 104 #define naddr u_int32_t 105 #define _HAVE_SA_LEN 106 #define _HAVE_SIN_LEN 107 #else 108 #define naddr u_long 109 #define _HAVE_SA_LEN 110 #define _HAVE_SIN_LEN 111 #endif 112 113 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 114 * the dstaddr of point-to-point interfaces. 115 */ 116 #if defined(__NetBSD__) 117 #define MCAST_PPP_BUG 118 #endif 119 120 #define DAY (24*60*60) 121 #define NEVER DAY /* a long time */ 122 #define EPOCH NEVER /* bias time by this to avoid <0 */ 123 124 /* Scan the kernel regularly to see if any interfaces have appeared or been 125 * turned off. These must be less than STALE_TIME. 126 */ 127 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 128 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 129 #define CHECK_QUIET_INTERVAL 300 /* when not */ 130 131 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 132 133 /* Metric used for fake default routes. It ought to be 15, but when 134 * processing advertised routes, previous versions of `routed` added 135 * to the received metric and discarded the route if the total was 16 136 * or larger. 137 */ 138 #define FAKE_METRIC (HOPCNT_INFINITY-2) 139 140 141 /* Router Discovery parameters */ 142 #ifndef sgi 143 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 144 #endif 145 #define MaxMaxAdvertiseInterval 1800 146 #define MinMaxAdvertiseInterval 4 147 #define DefMaxAdvertiseInterval 600 148 #define DEF_PreferenceLevel 0 149 #define MIN_PreferenceLevel 0x80000000 150 151 #define MAX_INITIAL_ADVERT_INTERVAL 16 152 #define MAX_INITIAL_ADVERTS 3 153 #define MAX_RESPONSE_DELAY 2 154 155 #define MAX_SOLICITATION_DELAY 1 156 #define SOLICITATION_INTERVAL 3 157 #define MAX_SOLICITATIONS 3 158 159 160 /* Bloated packet size for systems that simply add authentication to 161 * full-sized packets 162 */ 163 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 164 /* typical packet buffers */ 165 union pkt_buf { 166 char packet[OVER_MAXPACKETSIZE*2]; 167 struct rip rip; 168 }; 169 170 171 /* No more routes than this, to protect ourself in case something goes 172 * whacko and starts broadcasting zillions of bogus routes. 173 */ 174 #define MAX_ROUTES (128*1024) 175 extern int total_routes; 176 177 /* Main, daemon routing table structure 178 */ 179 struct rt_entry { 180 struct radix_node rt_nodes[2]; /* radix tree glue */ 181 u_int rt_state; 182 # define RS_IF 0x001 /* for network interface */ 183 # define RS_NET_INT 0x002 /* authority route */ 184 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 185 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 186 # define RS_SUBNET 0x008 /* subnet route from any source */ 187 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 188 # define RS_MHOME 0x020 /* from -m */ 189 # define RS_STATIC 0x040 /* from the kernel */ 190 # define RS_RDISC 0x080 /* from router discovery */ 191 struct sockaddr_in rt_dst_sock; 192 naddr rt_mask; 193 struct rt_spare { 194 struct interface *rts_ifp; 195 naddr rts_gate; /* forward packets here */ 196 naddr rts_router; /* on the authority of this router */ 197 char rts_metric; 198 u_short rts_tag; 199 time_t rts_time; /* timer to junk stale routes */ 200 #define NUM_SPARES 4 201 } rt_spares[NUM_SPARES]; 202 u_int rt_seqno; /* when last changed */ 203 char rt_poison_metric; /* to notice maximum recently */ 204 time_t rt_poison_time; /* advertised metric */ 205 }; 206 #define rt_dst rt_dst_sock.sin_addr.s_addr 207 #define rt_ifp rt_spares[0].rts_ifp 208 #define rt_gate rt_spares[0].rts_gate 209 #define rt_router rt_spares[0].rts_router 210 #define rt_metric rt_spares[0].rts_metric 211 #define rt_tag rt_spares[0].rts_tag 212 #define rt_time rt_spares[0].rts_time 213 214 #define HOST_MASK 0xffffffff 215 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 216 217 /* age all routes that 218 * are not from -g, -m, or static routes from the kernel 219 * not unbroken interface routes 220 * but not broken interfaces 221 * nor non-passive, remote interfaces that are not aliases 222 * (i.e. remote & metric=0) 223 */ 224 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 225 | RS_NET_SYN | RS_RDISC)) \ 226 && (!((rt_state) & RS_IF) \ 227 || (ifp) == 0 \ 228 || (((ifp)->int_state & IS_REMOTE) \ 229 && !((ifp)->int_state & IS_PASSIVE)))) 230 231 /* true if A is better than B 232 * Better if 233 * - A is not a poisoned route 234 * - and A is not stale 235 * - and A has a shorter path 236 * - or is the router speaking for itself 237 * - or the current route is equal but stale 238 * - or it is a host route advertised by a system for itself 239 */ 240 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 241 && now_stale <= (A)->rts_time \ 242 && ((A)->rts_metric < (B)->rts_metric \ 243 || ((A)->rts_gate == (A)->rts_router \ 244 && (B)->rts_gate != (B)->rts_router) \ 245 || ((A)->rts_metric == (B)->rts_metric \ 246 && now_stale > (B)->rts_time) \ 247 || (RT_ISHOST(rt) \ 248 && (rt)->rt_dst == (A)->rts_router \ 249 && (A)->rts_metric == (B)->rts_metric))) 250 251 252 /* An "interface" is similar to a kernel ifnet structure, except it also 253 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 254 */ 255 struct interface { 256 struct interface *int_next, **int_prev; 257 struct interface *int_ahash, **int_ahash_prev; 258 struct interface *int_bhash, **int_bhash_prev; 259 struct interface *int_rlink, **int_rlink_prev; 260 struct interface *int_nhash, **int_nhash_prev; 261 char int_name[IFNAMSIZ+15+1]; /* big enough for IS_REMOTE */ 262 u_short int_index; 263 naddr int_addr; /* address on this host (net order) */ 264 naddr int_brdaddr; /* broadcast address (n) */ 265 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 266 naddr int_net; /* working network # (host order)*/ 267 naddr int_mask; /* working net mask (host order) */ 268 naddr int_ripv1_mask; /* for inferring a mask (n) */ 269 naddr int_std_addr; /* class A/B/C address (n) */ 270 naddr int_std_net; /* class A/B/C network (h) */ 271 naddr int_std_mask; /* class A/B/C netmask (h) */ 272 int int_rip_sock; /* for queries */ 273 int int_if_flags; /* some bits copied from kernel */ 274 u_int int_state; 275 time_t int_act_time; /* last thought healthy */ 276 time_t int_query_time; 277 u_short int_transitions; /* times gone up-down */ 278 char int_metric; 279 char int_d_metric; /* for faked default route */ 280 struct int_data { 281 u_int ipackets; /* previous network stats */ 282 u_int ierrors; 283 u_int opackets; 284 u_int oerrors; 285 #ifdef sgi 286 u_int odrops; 287 #endif 288 time_t ts; /* timestamp on network stats */ 289 } int_data; 290 # define MAX_AUTH_KEYS 5 291 struct auth { /* authentication info */ 292 u_char type; 293 u_char key[RIP_AUTH_PW_LEN]; 294 u_char keyid; 295 time_t start, end; 296 } int_auth[MAX_AUTH_KEYS]; 297 int int_rdisc_pref; /* advertised rdisc preference */ 298 int int_rdisc_int; /* MaxAdvertiseInterval */ 299 int int_rdisc_cnt; 300 struct timeval int_rdisc_timer; 301 }; 302 303 /* bits in int_state */ 304 #define IS_ALIAS 0x0000001 /* interface alias */ 305 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 306 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 307 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 308 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 309 #define IS_CHECKED 0x0000020 /* still exists */ 310 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 311 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 312 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 313 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 314 #define IS_BROKE 0x0000400 /* seems to be broken */ 315 #define IS_SICK 0x0000800 /* seems to be broken */ 316 #define IS_DUP 0x0001000 /* has a duplicate address */ 317 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 318 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 319 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 320 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 321 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 322 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 323 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 324 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 325 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 326 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 327 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 328 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 329 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 330 #define IS_NO_ADV_IN 0x0100000 331 #define IS_NO_SOL_OUT 0x0200000 /* no solicitations */ 332 #define IS_SOL_OUT 0x0400000 /* send solicitations */ 333 #define GROUP_IS_SOL (IS_NO_ADV_IN|IS_NO_SOL_OUT) 334 #define IS_NO_ADV_OUT 0x0800000 /* do not advertise rdisc */ 335 #define IS_ADV_OUT 0x1000000 /* advertise rdisc */ 336 #define GROUP_IS_ADV (IS_NO_ADV_OUT|IS_ADV_OUT) 337 #define IS_BCAST_RDISC 0x2000000 /* broadcast instead of multicast */ 338 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 339 #define IS_PM_RDISC 0x4000000 /* poor-man's router discovery */ 340 341 #ifdef sgi 342 #define IFF_UP_RUNNING (IFF_RUNNING|IFF_UP) 343 #else 344 #define IFF_UP_RUNNING IFF_UP 345 #endif 346 #define iff_alive(f) (((f) & IFF_UP_RUNNING) == IFF_UP_RUNNING) 347 348 349 /* Information for aggregating routes */ 350 #define NUM_AG_SLOTS 32 351 struct ag_info { 352 struct ag_info *ag_fine; /* slot with finer netmask */ 353 struct ag_info *ag_cors; /* more coarse netmask */ 354 naddr ag_dst_h; /* destination in host byte order */ 355 naddr ag_mask; 356 naddr ag_gate; 357 naddr ag_nhop; 358 char ag_metric; /* metric to be advertised */ 359 char ag_pref; /* aggregate based on this */ 360 u_int ag_seqno; 361 u_short ag_tag; 362 u_short ag_state; 363 #define AGS_SUPPRESS 0x001 /* combine with coaser mask */ 364 #define AGS_PROMOTE 0x002 /* synthesize combined routes */ 365 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 366 #define AGS_REDUN1 0x008 367 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 368 == (AGS_REDUN0 | AGS_REDUN1)) 369 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 370 #define AGS_IF 0x020 /* for an interface */ 371 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 372 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 373 * has the finer netmask */ 374 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 375 * has the coarser netmaks */ 376 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 377 378 /* some bits are set if they are set on either route */ 379 #define AGS_PROMOTE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 380 AGS_SUPPRESS | AGS_CORS_GATE) 381 }; 382 383 384 /* parameters for interfaces */ 385 extern struct parm { 386 struct parm *parm_next; 387 char parm_name[IFNAMSIZ+1]; 388 naddr parm_net; 389 naddr parm_mask; 390 391 char parm_d_metric; 392 u_int parm_int_state; 393 int parm_rdisc_pref; 394 int parm_rdisc_int; 395 struct auth parm_auth[MAX_AUTH_KEYS]; 396 } *parms; 397 398 /* authority for internal networks */ 399 extern struct intnet { 400 struct intnet *intnet_next; 401 naddr intnet_addr; 402 naddr intnet_mask; 403 char intnet_metric; 404 } *intnets; 405 406 /* trusted routers */ 407 extern struct tgate { 408 struct tgate *tgate_next; 409 naddr tgate_addr; 410 } *tgates; 411 412 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 413 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 414 415 /* common output buffers */ 416 extern struct ws_buf { 417 struct rip *buf; 418 struct netinfo *n; 419 struct netinfo *base; 420 struct netinfo *lim; 421 enum output_type type; 422 } v12buf, v2buf; 423 424 extern pid_t mypid; 425 extern naddr myaddr; /* main address of this system */ 426 427 extern int stopint; /* !=0 to stop */ 428 429 extern int sock_max; 430 extern int rip_sock; /* RIP socket */ 431 extern struct interface *rip_sock_mcast; /* current multicast interface */ 432 extern int rt_sock; /* routing socket */ 433 extern int rt_sock_seqno; 434 extern int rdisc_sock; /* router-discovery raw socket */ 435 436 extern int seqno; /* sequence number for messages */ 437 extern int supplier; /* process should supply updates */ 438 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 439 extern int supplier_set; /* -s or -q requested */ 440 extern int ridhosts; /* 1=reduce host routes */ 441 extern int mhome; /* 1=want multi-homed host route */ 442 extern int advertise_mhome; /* 1=must continue adverising it */ 443 extern int auth_ok; /* 1=ignore auth if we do not care */ 444 445 extern struct timeval clk; /* system clock's idea of time */ 446 extern struct timeval epoch; /* system clock when started */ 447 extern struct timeval now; /* current idea of time */ 448 extern time_t now_stale; 449 extern time_t now_expire; 450 extern time_t now_garbage; 451 452 extern struct timeval next_bcast; /* next general broadcast */ 453 extern struct timeval age_timer; /* next check of old routes */ 454 extern struct timeval no_flash; /* inhibit flash update until then */ 455 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 456 extern int rdisc_ok; /* using solicited route */ 457 458 extern struct timeval ifinit_timer; /* time to check interfaces */ 459 460 extern naddr loopaddr; /* our address on loopback */ 461 extern int tot_interfaces; /* # of remote and local interfaces */ 462 extern int rip_interfaces; /* # of interfaces doing RIP */ 463 extern struct interface *ifnet; /* all interfaces */ 464 extern struct interface *remote_if; /* remote interfaces */ 465 extern int have_ripv1_out; /* have a RIPv1 interface */ 466 extern int have_ripv1_in; 467 extern int need_flash; /* flash update needed */ 468 extern struct timeval need_kern; /* need to update kernel table */ 469 extern int update_seqno; /* a route has changed */ 470 471 extern int tracelevel, new_tracelevel; 472 #define MAX_TRACELEVEL 4 473 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 474 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 475 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 476 #define TRACEACTIONS (tracelevel != 0) 477 extern FILE *ftrace; /* output trace file */ 478 extern char inittracename[MAXPATHLEN+1]; 479 480 extern struct radix_node_head *rhead; 481 482 483 #ifdef sgi 484 /* Fix conflicts */ 485 #define dup2(x,y) BSDdup2(x,y) 486 #endif /* sgi */ 487 488 extern void fix_sock(int, char *); 489 extern void fix_select(void); 490 extern void rip_off(void); 491 extern void rip_on(struct interface *); 492 493 extern void bufinit(void); 494 extern int output(enum output_type, struct sockaddr_in *, 495 struct interface *, struct rip *, int); 496 extern void clr_ws_buf(struct ws_buf *, struct auth *); 497 extern void rip_query(void); 498 extern void rip_bcast(int); 499 extern void supply(struct sockaddr_in *, struct interface *, 500 enum output_type, int, int, int); 501 502 extern void msglog(char *, ...); 503 struct msg_limit { 504 time_t reuse; 505 struct msg_sub { 506 naddr addr; 507 time_t until; 508 # define MSG_SUBJECT_N 8 509 } subs[MSG_SUBJECT_N]; 510 }; 511 extern void msglim(struct msg_limit *, naddr, char *, ...); 512 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 513 extern void logbad(int, char *, ...); 514 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 515 #ifdef DEBUG 516 #define DBGERR(dump,msg) BADERR(dump,msg) 517 #else 518 #define DBGERR(dump,msg) LOGERR(msg) 519 #endif 520 extern char *naddr_ntoa(naddr); 521 extern char *saddr_ntoa(struct sockaddr *); 522 523 extern void *rtmalloc(size_t, char *); 524 extern void timevaladd(struct timeval *, struct timeval *); 525 extern void intvl_random(struct timeval *, u_long, u_long); 526 extern int getnet(char *, naddr *, naddr *); 527 extern int gethost(char *, naddr *); 528 extern void gwkludge(void); 529 extern char *parse_parms(char *, int); 530 extern char *check_parms(struct parm *); 531 extern void get_parms(struct interface *); 532 533 extern void lastlog(void); 534 extern void set_tracefile(char *, char *, int); 535 extern void tracelevel_msg(char *, int); 536 extern void trace_off(char*, ...); 537 extern void set_tracelevel(void); 538 extern void trace_flush(void); 539 extern void trace_kernel(char *, ...); 540 extern void trace_act(char *, ...); 541 extern void trace_pkt(char *, ...); 542 extern void trace_add_del(char *, struct rt_entry *); 543 extern void trace_change(struct rt_entry *, u_int, naddr, naddr, int, 544 u_short, struct interface *, time_t, char *); 545 extern void trace_if(char *, struct interface *); 546 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 547 naddr, naddr, 548 struct interface *, int, u_short, time_t); 549 extern void trace_rip(char*, char*, struct sockaddr_in *, 550 struct interface *, struct rip *, int); 551 extern char *addrname(naddr, naddr, int); 552 extern char *rtname(naddr, naddr, naddr); 553 554 extern void rdisc_age(naddr); 555 extern void set_rdisc_mg(struct interface *, int); 556 extern void set_supplier(void); 557 extern void if_bad_rdisc(struct interface *); 558 extern void if_ok_rdisc(struct interface *); 559 extern void read_rip(int, struct interface *); 560 extern void read_rt(void); 561 extern void read_d(void); 562 extern void rdisc_adv(void); 563 extern void rdisc_sol(void); 564 565 extern void sigalrm(int); 566 extern void sigterm(int); 567 568 extern void sigtrace_on(int); 569 extern void sigtrace_off(int); 570 571 extern void flush_kern(void); 572 extern void age(naddr); 573 574 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 575 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 576 u_short, u_short, void (*)(struct ag_info *)); 577 extern void del_static(naddr, naddr, int); 578 extern void del_redirects(naddr, time_t); 579 extern struct rt_entry *rtget(naddr, naddr); 580 extern struct rt_entry *rtfind(naddr); 581 extern void rtinit(void); 582 extern void rtadd(naddr, naddr, naddr, naddr, 583 int, u_short, u_int, struct interface *); 584 extern void rtchange(struct rt_entry *, u_int, naddr,naddr, int, u_short, 585 struct interface *ifp, time_t, char *); 586 extern void rtdelete(struct rt_entry *); 587 extern void rts_delete(struct rt_entry *, struct rt_spare *); 588 extern void rtbad_sub(struct rt_entry *); 589 extern void rtswitch(struct rt_entry *, struct rt_spare *); 590 extern void rtbad(struct rt_entry *); 591 592 593 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 594 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 595 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 596 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 597 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 598 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 599 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 600 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 601 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 602 int); 603 604 extern naddr std_mask(naddr); 605 extern naddr ripv1_mask_net(naddr, struct interface *); 606 extern naddr ripv1_mask_host(naddr,struct interface *); 607 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 608 extern int check_dst(naddr); 609 extern struct interface *check_dup(naddr, naddr, naddr, int); 610 extern int check_remote(struct interface *); 611 extern int addrouteforif(register struct interface *); 612 extern void ifinit(void); 613 extern int walk_bad(struct radix_node *, struct walkarg *); 614 extern int if_ok(struct interface *, char *); 615 extern void if_sick(struct interface *); 616 extern void if_bad(struct interface *); 617 extern void if_link(struct interface *); 618 extern struct interface *ifwithaddr(naddr, int, int); 619 extern struct interface *ifwithname(char *, naddr); 620 extern struct interface *ifwithindex(u_short, int); 621 extern struct interface *iflookup(naddr); 622 623 extern struct auth *find_auth(struct interface *); 624 extern void end_md5_auth(struct ws_buf *, struct auth *); 625 626 #define MD5_DIGEST_LEN 16 627 typedef struct { 628 u_int32_t state[4]; /* state (ABCD) */ 629 u_int32_t count[2]; /* # of bits, modulo 2^64 (LSB 1st) */ 630 unsigned char buffer[64]; /* input buffer */ 631 } MD5_CTX; 632 extern void MD5Init(MD5_CTX*); 633 extern void MD5Update(MD5_CTX*, u_char*, u_int); 634 extern void MD5Final(u_char[MD5_DIGEST_LEN], MD5_CTX*); 635
Indexes created Thu Sep 25 16:09:42 GMT 2025