defs.h revision 1.19
1 /* $NetBSD: defs.h,v 1.19 2001/01/15 13:19:12 itojun 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 acknowledgment: 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 vestigial 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/cdefs.h> 77 #include <sys/time.h> 78 #include <sys/types.h> 79 #include <sys/param.h> 80 #include <sys/ioctl.h> 81 #include <sys/sysctl.h> 82 #include <sys/socket.h> 83 #ifdef sgi 84 #define _USER_ROUTE_TREE 85 #include <net/radix.h> 86 #else 87 #include "radix.h" 88 #define UNUSED __attribute__((unused)) 89 #define PATTRIB(f,l) __attribute__((format (printf,f,l))) 90 #endif 91 #include <net/if.h> 92 #include <net/route.h> 93 #include <net/if_dl.h> 94 #include <netinet/in.h> 95 #include <arpa/inet.h> 96 #define RIPVERSION RIPv2 97 #include <protocols/routed.h> 98 99 100 /* Type of an IP address. 101 * Some systems do not like to pass structures, so do not use in_addr. 102 * Some systems think a long has 64 bits, which would be a gross waste. 103 * So define it here so it can be changed for the target system. 104 * It should be defined somewhere netinet/in.h, but it is not. 105 */ 106 #ifdef sgi 107 #define naddr u_int32_t 108 #elif defined (__NetBSD__) 109 #define naddr u_int32_t 110 #define _HAVE_SA_LEN 111 #define _HAVE_SIN_LEN 112 #else 113 #define naddr u_long 114 #define _HAVE_SA_LEN 115 #define _HAVE_SIN_LEN 116 #endif 117 118 /* Turn on if IP_{ADD,DROP}_MEMBERSHIP and IP_MULTICAST_IF considers address 119 * within 0.0.0.0/8 as interface index. 120 */ 121 #ifdef __NetBSD__ 122 #define MCAST_IFINDEX 123 #endif 124 125 /* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 126 * the dstaddr of point-to-point interfaces. 127 #undef MCAST_PPP_BUG 128 */ 129 #ifdef MCAST_IFINDEX 130 #undef MCAST_PPP_BUG 131 #endif 132 133 #define DAY (24*60*60) 134 #define NEVER DAY /* a long time */ 135 #define EPOCH NEVER /* bias time by this to avoid <0 */ 136 137 /* Scan the kernel regularly to see if any interfaces have appeared or been 138 * turned off. These must be less than STALE_TIME. 139 */ 140 #define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 141 #define CHECK_ACT_INTERVAL 30 /* when advertising */ 142 #define CHECK_QUIET_INTERVAL 300 /* when not */ 143 144 #define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 145 146 /* Metric used for fake default routes. It ought to be 15, but when 147 * processing advertised routes, previous versions of `routed` added 148 * to the received metric and discarded the route if the total was 16 149 * or larger. 150 */ 151 #define FAKE_METRIC (HOPCNT_INFINITY-2) 152 153 154 /* Router Discovery parameters */ 155 #ifndef sgi 156 #define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 157 #endif 158 #define MaxMaxAdvertiseInterval 1800 159 #define MinMaxAdvertiseInterval 4 160 #define DefMaxAdvertiseInterval 600 161 #define DEF_PreferenceLevel 0 162 #define MIN_PreferenceLevel 0x80000000 163 164 #define MAX_INITIAL_ADVERT_INTERVAL 16 165 #define MAX_INITIAL_ADVERTS 3 166 #define MAX_RESPONSE_DELAY 2 167 168 #define MAX_SOLICITATION_DELAY 1 169 #define SOLICITATION_INTERVAL 3 170 #define MAX_SOLICITATIONS 3 171 172 173 /* Bloated packet size for systems that simply add authentication to 174 * full-sized packets 175 */ 176 #define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 177 /* typical packet buffers */ 178 union pkt_buf { 179 char packet[OVER_MAXPACKETSIZE*2]; 180 struct rip rip; 181 }; 182 183 #define GNAME_LEN 64 /* assumed=64 in parms.c */ 184 /* bigger than IFNAMSIZ, with room for "external()" or "remote()" */ 185 #define IF_NAME_LEN (GNAME_LEN+15) 186 187 /* No more routes than this, to protect ourself in case something goes 188 * whacko and starts broadcasting zillions of bogus routes. 189 */ 190 #define MAX_ROUTES (128*1024) 191 extern int total_routes; 192 193 /* Main, daemon routing table structure 194 */ 195 struct rt_entry { 196 struct radix_node rt_nodes[2]; /* radix tree glue */ 197 u_int rt_state; 198 # define RS_IF 0x001 /* for network interface */ 199 # define RS_NET_INT 0x002 /* authority route */ 200 # define RS_NET_SYN 0x004 /* fake net route for subnet */ 201 # define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 202 # define RS_SUBNET 0x008 /* subnet route from any source */ 203 # define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 204 # define RS_MHOME 0x020 /* from -m */ 205 # define RS_STATIC 0x040 /* from the kernel */ 206 # define RS_RDISC 0x080 /* from router discovery */ 207 struct sockaddr_in rt_dst_sock; 208 naddr rt_mask; 209 struct rt_spare { 210 struct interface *rts_ifp; 211 naddr rts_gate; /* forward packets here */ 212 naddr rts_router; /* on the authority of this router */ 213 char rts_metric; 214 u_short rts_tag; 215 time_t rts_time; /* timer to junk stale routes */ 216 u_int rts_de_ag; /* de-aggregation level */ 217 #define NUM_SPARES 4 218 } rt_spares[NUM_SPARES]; 219 u_int rt_seqno; /* when last changed */ 220 char rt_poison_metric; /* to notice maximum recently */ 221 time_t rt_poison_time; /* advertised metric */ 222 }; 223 #define rt_dst rt_dst_sock.sin_addr.s_addr 224 #define rt_ifp rt_spares[0].rts_ifp 225 #define rt_gate rt_spares[0].rts_gate 226 #define rt_router rt_spares[0].rts_router 227 #define rt_metric rt_spares[0].rts_metric 228 #define rt_tag rt_spares[0].rts_tag 229 #define rt_time rt_spares[0].rts_time 230 #define rt_de_ag rt_spares[0].rts_de_ag 231 232 #define HOST_MASK 0xffffffff 233 #define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 234 235 /* age all routes that 236 * are not from -g, -m, or static routes from the kernel 237 * not unbroken interface routes 238 * but not broken interfaces 239 * nor non-passive, remote interfaces that are not aliases 240 * (i.e. remote & metric=0) 241 */ 242 #define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 243 | RS_NET_SYN | RS_RDISC)) \ 244 && (!((rt_state) & RS_IF) \ 245 || (ifp) == 0 \ 246 || (((ifp)->int_state & IS_REMOTE) \ 247 && !((ifp)->int_state & IS_PASSIVE)))) 248 249 /* true if A is better than B 250 * Better if 251 * - A is not a poisoned route 252 * - and A is not stale 253 * - and A has a shorter path 254 * - or is the router speaking for itself 255 * - or the current route is equal but stale 256 * - or it is a host route advertised by a system for itself 257 */ 258 #define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 259 && now_stale <= (A)->rts_time \ 260 && ((A)->rts_metric < (B)->rts_metric \ 261 || ((A)->rts_gate == (A)->rts_router \ 262 && (B)->rts_gate != (B)->rts_router) \ 263 || ((A)->rts_metric == (B)->rts_metric \ 264 && now_stale > (B)->rts_time) \ 265 || (RT_ISHOST(rt) \ 266 && (rt)->rt_dst == (A)->rts_router \ 267 && (A)->rts_metric == (B)->rts_metric))) 268 269 270 /* An "interface" is similar to a kernel ifnet structure, except it also 271 * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 272 */ 273 struct interface { 274 struct interface *int_next, **int_prev; 275 struct interface *int_ahash, **int_ahash_prev; 276 struct interface *int_bhash, **int_bhash_prev; 277 struct interface *int_rlink, **int_rlink_prev; 278 struct interface *int_nhash, **int_nhash_prev; 279 char int_name[IF_NAME_LEN+1]; 280 u_short int_index; 281 naddr int_addr; /* address on this host (net order) */ 282 naddr int_brdaddr; /* broadcast address (n) */ 283 naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 284 naddr int_net; /* working network # (host order)*/ 285 naddr int_mask; /* working net mask (host order) */ 286 naddr int_ripv1_mask; /* for inferring a mask (n) */ 287 naddr int_std_addr; /* class A/B/C address (n) */ 288 naddr int_std_net; /* class A/B/C network (h) */ 289 naddr int_std_mask; /* class A/B/C netmask (h) */ 290 int int_rip_sock; /* for queries */ 291 int int_if_flags; /* some bits copied from kernel */ 292 u_int int_state; 293 time_t int_act_time; /* last thought healthy */ 294 time_t int_query_time; 295 u_short int_transitions; /* times gone up-down */ 296 char int_metric; 297 char int_d_metric; /* for faked default route */ 298 struct int_data { 299 u_int ipackets; /* previous network stats */ 300 u_int ierrors; 301 u_int opackets; 302 u_int oerrors; 303 #ifdef sgi 304 u_int odrops; 305 #endif 306 time_t ts; /* timestamp on network stats */ 307 } int_data; 308 # define MAX_AUTH_KEYS 5 309 struct auth { /* authentication info */ 310 u_int16_t type; 311 u_char key[RIP_AUTH_PW_LEN]; 312 u_char keyid; 313 time_t start, end; 314 } int_auth[MAX_AUTH_KEYS]; 315 /* router discovery parameters */ 316 int int_rdisc_pref; /* signed preference to advertise */ 317 int int_rdisc_int; /* MaxAdvertiseInterval */ 318 int int_rdisc_cnt; 319 struct timeval int_rdisc_timer; 320 }; 321 322 /* bits in int_state */ 323 #define IS_ALIAS 0x0000001 /* interface alias */ 324 #define IS_SUBNET 0x0000002 /* interface on subnetted network */ 325 #define IS_REMOTE 0x0000004 /* interface is not on this machine */ 326 #define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 327 #define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 328 #define IS_CHECKED 0x0000020 /* still exists */ 329 #define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 330 #define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 331 #define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 332 #define IS_REDIRECT_OK 0x0000200 /* accept ICMP redirects */ 333 #define IS_BROKE 0x0000400 /* seems to be broken */ 334 #define IS_SICK 0x0000800 /* seems to be broken */ 335 #define IS_DUP 0x0001000 /* has a duplicate address */ 336 #define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 337 #define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 338 #define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 339 #define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 340 #define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 341 #define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 342 #define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 343 #define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 344 #define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 345 #define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 346 #define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 347 #define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 348 #define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 349 #define IS_NO_RIP_MCAST 0x0100000 /* broadcast RIPv2 */ 350 #define IS_NO_ADV_IN 0x0200000 /* do not listen to advertisements */ 351 #define IS_NO_SOL_OUT 0x0400000 /* send no solicitations */ 352 #define IS_SOL_OUT 0x0800000 /* send solicitations */ 353 #define GROUP_IS_SOL_OUT (IS_SOL_OUT | IS_NO_SOL_OUT) 354 #define IS_NO_ADV_OUT 0x1000000 /* do not advertise rdisc */ 355 #define IS_ADV_OUT 0x2000000 /* advertise rdisc */ 356 #define GROUP_IS_ADV_OUT (IS_NO_ADV_OUT | IS_ADV_OUT) 357 #define IS_BCAST_RDISC 0x4000000 /* broadcast instead of multicast */ 358 #define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 359 #define IS_PM_RDISC 0x8000000 /* poor-man's router discovery */ 360 361 #define iff_up(f) ((f) & IFF_UP) 362 363 364 /* Information for aggregating routes */ 365 #define NUM_AG_SLOTS 32 366 struct ag_info { 367 struct ag_info *ag_fine; /* slot with finer netmask */ 368 struct ag_info *ag_cors; /* more coarse netmask */ 369 naddr ag_dst_h; /* destination in host byte order */ 370 naddr ag_mask; 371 naddr ag_gate; 372 naddr ag_nhop; 373 char ag_metric; /* metric to be advertised */ 374 char ag_pref; /* aggregate based on this */ 375 u_int ag_seqno; 376 u_short ag_tag; 377 u_short ag_state; 378 #define AGS_SUPPRESS 0x001 /* combine with coarser mask */ 379 #define AGS_AGGREGATE 0x002 /* synthesize combined routes */ 380 #define AGS_REDUN0 0x004 /* redundant, finer routes output */ 381 #define AGS_REDUN1 0x008 382 #define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 383 == (AGS_REDUN0 | AGS_REDUN1)) 384 #define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 385 #define AGS_IF 0x020 /* for an interface */ 386 #define AGS_RIPV2 0x040 /* send only as RIPv2 */ 387 #define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 388 * has the finer netmask */ 389 #define AGS_CORS_GATE 0x100 /* ignore differing gate when this 390 * has the coarser netmasks */ 391 #define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 392 393 /* some bits are set if they are set on either route */ 394 #define AGS_AGGREGATE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 395 AGS_SUPPRESS | AGS_CORS_GATE) 396 }; 397 398 399 /* parameters for interfaces */ 400 extern struct parm { 401 struct parm *parm_next; 402 char parm_name[IF_NAME_LEN+1]; 403 naddr parm_net; 404 naddr parm_mask; 405 406 char parm_d_metric; 407 u_int parm_int_state; 408 int parm_rdisc_pref; /* signed IRDP preference */ 409 int parm_rdisc_int; /* IRDP advertising interval */ 410 struct auth parm_auth[MAX_AUTH_KEYS]; 411 } *parms; 412 413 /* authority for internal networks */ 414 extern struct intnet { 415 struct intnet *intnet_next; 416 naddr intnet_addr; /* network byte order */ 417 naddr intnet_mask; 418 char intnet_metric; 419 } *intnets; 420 421 /* defined RIPv1 netmasks */ 422 extern struct r1net { 423 struct r1net *r1net_next; 424 naddr r1net_net; /* host order */ 425 naddr r1net_match; 426 naddr r1net_mask; 427 } *r1nets; 428 429 /* trusted routers */ 430 extern struct tgate { 431 struct tgate *tgate_next; 432 naddr tgate_addr; 433 #define MAX_TGATE_NETS 32 434 struct tgate_net { 435 naddr net; /* host order */ 436 naddr mask; 437 } tgate_nets[MAX_TGATE_NETS]; 438 } *tgates; 439 440 enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 441 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 442 443 /* common output buffers */ 444 extern struct ws_buf { 445 struct rip *buf; 446 struct netinfo *n; 447 struct netinfo *base; 448 struct netinfo *lim; 449 enum output_type type; 450 } v12buf, v2buf; 451 452 extern pid_t mypid; 453 extern naddr myaddr; /* main address of this system */ 454 455 extern int stopint; /* !=0 to stop */ 456 457 extern int sock_max; 458 extern int rip_sock; /* RIP socket */ 459 extern struct interface *rip_sock_mcast; /* current multicast interface */ 460 extern int rt_sock; /* routing socket */ 461 extern int rt_sock_seqno; 462 extern int rdisc_sock; /* router-discovery raw socket */ 463 464 extern int seqno; /* sequence number for messages */ 465 extern int supplier; /* process should supply updates */ 466 extern int supplier_set; /* -s or -q requested */ 467 extern int lookforinterfaces; /* 1=probe for new up interfaces */ 468 extern int ridhosts; /* 1=reduce host routes */ 469 extern int mhome; /* 1=want multi-homed host route */ 470 extern int advertise_mhome; /* 1=must continue advertising it */ 471 extern int auth_ok; /* 1=ignore auth if we do not care */ 472 473 extern struct timeval clk; /* system clock's idea of time */ 474 extern struct timeval epoch; /* system clock when started */ 475 extern struct timeval now; /* current idea of time */ 476 extern time_t now_stale; 477 extern time_t now_expire; 478 extern time_t now_garbage; 479 480 extern struct timeval next_bcast; /* next general broadcast */ 481 extern struct timeval age_timer; /* next check of old routes */ 482 extern struct timeval no_flash; /* inhibit flash update until then */ 483 extern struct timeval rdisc_timer; /* next advert. or solicitation */ 484 extern int rdisc_ok; /* using solicited route */ 485 486 extern struct timeval ifinit_timer; /* time to check interfaces */ 487 488 extern naddr loopaddr; /* our address on loopback */ 489 extern int tot_interfaces; /* # of remote and local interfaces */ 490 extern int rip_interfaces; /* # of interfaces doing RIP */ 491 extern struct interface *ifnet; /* all interfaces */ 492 extern struct interface *remote_if; /* remote interfaces */ 493 extern int have_ripv1_out; /* have a RIPv1 interface */ 494 extern int have_ripv1_in; 495 extern int need_flash; /* flash update needed */ 496 extern struct timeval need_kern; /* need to update kernel table */ 497 extern u_int update_seqno; /* a route has changed */ 498 499 extern int tracelevel, new_tracelevel; 500 #define MAX_TRACELEVEL 4 501 #define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 502 #define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 503 #define TRACEPACKETS (tracelevel >= 2) /* note packets */ 504 #define TRACEACTIONS (tracelevel != 0) 505 extern FILE *ftrace; /* output trace file */ 506 extern char inittracename[MAXPATHLEN+1]; 507 508 extern struct radix_node_head *rhead; 509 510 511 #ifdef sgi 512 /* Fix conflicts */ 513 #define dup2(x,y) BSDdup2(x,y) 514 #endif /* sgi */ 515 516 extern void fix_sock(int, const char *); 517 extern void fix_select(void); 518 extern void rip_off(void); 519 extern void rip_on(struct interface *); 520 521 extern void bufinit(void); 522 extern int output(enum output_type, struct sockaddr_in *, 523 struct interface *, struct rip *, int); 524 extern void clr_ws_buf(struct ws_buf *, struct auth *); 525 extern void rip_query(void); 526 extern void rip_bcast(int); 527 extern void supply(struct sockaddr_in *, struct interface *, 528 enum output_type, int, int, int); 529 530 extern void msglog(const char *, ...) PATTRIB(1,2); 531 struct msg_limit { 532 time_t reuse; 533 struct msg_sub { 534 naddr addr; 535 time_t until; 536 # define MSG_SUBJECT_N 8 537 } subs[MSG_SUBJECT_N]; 538 }; 539 extern void msglim(struct msg_limit *, naddr, 540 const char *, ...) PATTRIB(3,4); 541 #define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 542 extern void logbad(int, const char *, ...) PATTRIB(2,3); 543 #define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 544 #ifdef DEBUG 545 #define DBGERR(dump,msg) BADERR(dump,msg) 546 #else 547 #define DBGERR(dump,msg) LOGERR(msg) 548 #endif 549 extern char *naddr_ntoa(naddr); 550 extern const char *saddr_ntoa(struct sockaddr *); 551 552 extern void *rtmalloc(size_t, const char *); 553 extern void timevaladd(struct timeval *, struct timeval *); 554 extern void intvl_random(struct timeval *, u_long, u_long); 555 extern int getnet(char *, naddr *, naddr *); 556 extern int gethost(char *, naddr *); 557 extern void gwkludge(void); 558 extern const char *parse_parms(char *, int); 559 extern const char *check_parms(struct parm *); 560 extern void get_parms(struct interface *); 561 562 extern void lastlog(void); 563 extern void trace_close(int); 564 extern void set_tracefile(const char *, const char *, int); 565 extern void tracelevel_msg(const char *, int); 566 extern void trace_off(const char*, ...) PATTRIB(1,2); 567 extern void set_tracelevel(void); 568 extern void trace_flush(void); 569 extern void trace_misc(const char *, ...) PATTRIB(1,2); 570 extern void trace_act(const char *, ...) PATTRIB(1,2); 571 extern void trace_pkt(const char *, ...) PATTRIB(1,2); 572 extern void trace_add_del(const char *, struct rt_entry *); 573 extern void trace_change(struct rt_entry *, u_int, struct rt_spare *, 574 const char *); 575 extern void trace_if(const char *, struct interface *); 576 extern void trace_upslot(struct rt_entry *, struct rt_spare *, 577 struct rt_spare *); 578 extern void trace_rip(const char*, const char*, struct sockaddr_in *, 579 struct interface *, struct rip *, int); 580 extern char *addrname(naddr, naddr, int); 581 extern char *rtname(naddr, naddr, naddr); 582 583 extern void rdisc_age(naddr); 584 extern void set_rdisc_mg(struct interface *, int); 585 extern void set_supplier(void); 586 extern void if_bad_rdisc(struct interface *); 587 extern void if_ok_rdisc(struct interface *); 588 extern void read_rip(int, struct interface *); 589 extern void read_rt(void); 590 extern void read_d(void); 591 extern void rdisc_adv(void); 592 extern void rdisc_sol(void); 593 594 extern void sigalrm(int); 595 extern void sigterm(int); 596 597 extern void sigtrace_on(int); 598 extern void sigtrace_off(int); 599 600 extern void flush_kern(void); 601 extern void age(naddr); 602 603 extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 604 extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 605 u_short, u_short, void (*)(struct ag_info *)); 606 extern void del_static(naddr, naddr, naddr, int); 607 extern void del_redirects(naddr, time_t); 608 extern struct rt_entry *rtget(naddr, naddr); 609 extern struct rt_entry *rtfind(naddr); 610 extern void rtinit(void); 611 extern void rtadd(naddr, naddr, u_int, struct rt_spare *); 612 extern void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 613 extern void rtdelete(struct rt_entry *); 614 extern void rts_delete(struct rt_entry *, struct rt_spare *); 615 extern void rtbad_sub(struct rt_entry *); 616 extern void rtswitch(struct rt_entry *, struct rt_spare *); 617 extern void rtbad(struct rt_entry *); 618 619 #define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 620 #define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 621 #define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 622 #define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 623 #define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 624 #define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 625 #define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 626 #define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 627 void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 628 int); 629 630 extern naddr std_mask(naddr); 631 extern naddr ripv1_mask_net(naddr, struct interface *); 632 extern naddr ripv1_mask_host(naddr,struct interface *); 633 #define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 634 extern int check_dst(naddr); 635 extern struct interface *check_dup(naddr, naddr, naddr, int); 636 extern int check_remote(struct interface *); 637 extern int addrouteforif(struct interface *); 638 extern void ifinit(void); 639 extern int walk_bad(struct radix_node *, struct walkarg *); 640 extern int if_ok(struct interface *, const char *); 641 extern void if_sick(struct interface *); 642 extern void if_bad(struct interface *); 643 extern void if_link(struct interface *); 644 extern struct interface *ifwithaddr(naddr, int, int); 645 extern struct interface *ifwithname(char *, naddr); 646 extern struct interface *ifwithindex(u_short, int); 647 extern struct interface *iflookup(naddr); 648 649 extern struct auth *find_auth(struct interface *); 650 extern void end_md5_auth(struct ws_buf *, struct auth *); 651 652 #define MD5_DIGEST_LEN 16 653 typedef struct { 654 u_int32_t state[4]; /* state (ABCD) */ 655 u_int32_t count[2]; /* # of bits, modulo 2^64 (LSB 1st) */ 656 unsigned char buffer[64]; /* input buffer */ 657 } MD5_CTX; 658 extern void MD5Init(MD5_CTX*); 659 extern void MD5Update(MD5_CTX*, u_char*, u_int); 660 extern void MD5Final(u_char[MD5_DIGEST_LEN], MD5_CTX*); 661
Indexes created Sat Sep 27 22:09:54 GMT 2025