defs.h revision 50969
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: head/sbin/routed/defs.h 50969 1999-09-05 17:49:11Z peter $ 36 */ 37 38#ifdef sgi 39#ident "$FreeBSD: head/sbin/routed/defs.h 50969 1999-09-05 17:49:11Z peter $" 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 */ 174union 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) 187extern int total_routes; 188 189/* Main, daemon routing table structure 190 */ 191struct 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 */ 269struct 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 362struct 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 */ 396extern 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 */ 410extern 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 */ 418extern 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 */ 426extern 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 436enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 437 NO_OUT_MULTICAST, NO_OUT_RIPV2}; 438 439/* common output buffers */ 440extern 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 448extern pid_t mypid; 449extern naddr myaddr; /* main address of this system */ 450 451extern int stopint; /* !=0 to stop */ 452 453extern int sock_max; 454extern int rip_sock; /* RIP socket */ 455extern struct interface *rip_sock_mcast; /* current multicast interface */ 456extern int rt_sock; /* routing socket */ 457extern int rt_sock_seqno; 458extern int rdisc_sock; /* router-discovery raw socket */ 459 460extern int seqno; /* sequence number for messages */ 461extern int supplier; /* process should supply updates */ 462extern int supplier_set; /* -s or -q requested */ 463extern int lookforinterfaces; /* 1=probe for new up interfaces */ 464extern int ridhosts; /* 1=reduce host routes */ 465extern int mhome; /* 1=want multi-homed host route */ 466extern int advertise_mhome; /* 1=must continue advertising it */ 467extern int auth_ok; /* 1=ignore auth if we do not care */ 468 469extern struct timeval clk; /* system clock's idea of time */ 470extern struct timeval epoch; /* system clock when started */ 471extern struct timeval now; /* current idea of time */ 472extern time_t now_stale; 473extern time_t now_expire; 474extern time_t now_garbage; 475 476extern struct timeval next_bcast; /* next general broadcast */ 477extern struct timeval age_timer; /* next check of old routes */ 478extern struct timeval no_flash; /* inhibit flash update until then */ 479extern struct timeval rdisc_timer; /* next advert. or solicitation */ 480extern int rdisc_ok; /* using solicited route */ 481 482extern struct timeval ifinit_timer; /* time to check interfaces */ 483 484extern naddr loopaddr; /* our address on loopback */ 485extern int tot_interfaces; /* # of remote and local interfaces */ 486extern int rip_interfaces; /* # of interfaces doing RIP */ 487extern struct interface *ifnet; /* all interfaces */ 488extern struct interface *remote_if; /* remote interfaces */ 489extern int have_ripv1_out; /* have a RIPv1 interface */ 490extern int have_ripv1_in; 491extern int need_flash; /* flash update needed */ 492extern struct timeval need_kern; /* need to update kernel table */ 493extern u_int update_seqno; /* a route has changed */ 494 495extern 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) 501extern FILE *ftrace; /* output trace file */ 502extern char inittracename[MAXPATHLEN+1]; 503 504extern 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 512extern void fix_sock(int, const char *); 513extern void fix_select(void); 514extern void rip_off(void); 515extern void rip_on(struct interface *); 516 517extern void bufinit(void); 518extern int output(enum output_type, struct sockaddr_in *, 519 struct interface *, struct rip *, int); 520extern void clr_ws_buf(struct ws_buf *, struct auth *); 521extern void rip_query(void); 522extern void rip_bcast(int); 523extern void supply(struct sockaddr_in *, struct interface *, 524 enum output_type, int, int, int); 525 526extern void msglog(const char *, ...) PATTRIB(1,2); 527struct 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}; 535extern void msglim(struct msg_limit *, naddr, 536 const char *, ...) PATTRIB(3,4); 537#define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 538extern 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 545extern char *naddr_ntoa(naddr); 546extern const char *saddr_ntoa(struct sockaddr *); 547 548extern void *rtmalloc(size_t, const char *); 549extern void timevaladd(struct timeval *, struct timeval *); 550extern void intvl_random(struct timeval *, u_long, u_long); 551extern int getnet(char *, naddr *, naddr *); 552extern int gethost(char *, naddr *); 553extern void gwkludge(void); 554extern const char *parse_parms(char *, int); 555extern const char *check_parms(struct parm *); 556extern void get_parms(struct interface *); 557 558extern void lastlog(void); 559extern void trace_close(int); 560extern void set_tracefile(const char *, const char *, int); 561extern void tracelevel_msg(const char *, int); 562extern void trace_off(const char*, ...) PATTRIB(1,2); 563extern void set_tracelevel(void); 564extern void trace_flush(void); 565extern void trace_misc(const char *, ...) PATTRIB(1,2); 566extern void trace_act(const char *, ...) PATTRIB(1,2); 567extern void trace_pkt(const char *, ...) PATTRIB(1,2); 568extern void trace_add_del(const char *, struct rt_entry *); 569extern void trace_change(struct rt_entry *, u_int, struct rt_spare *, 570 const char *); 571extern void trace_if(const char *, struct interface *); 572extern void trace_upslot(struct rt_entry *, struct rt_spare *, 573 struct rt_spare *); 574extern void trace_rip(const char*, const char*, struct sockaddr_in *, 575 struct interface *, struct rip *, int); 576extern char *addrname(naddr, naddr, int); 577extern char *rtname(naddr, naddr, naddr); 578 579extern void rdisc_age(naddr); 580extern void set_rdisc_mg(struct interface *, int); 581extern void set_supplier(void); 582extern void if_bad_rdisc(struct interface *); 583extern void if_ok_rdisc(struct interface *); 584extern void read_rip(int, struct interface *); 585extern void read_rt(void); 586extern void read_d(void); 587extern void rdisc_adv(void); 588extern void rdisc_sol(void); 589 590extern void sigalrm(int); 591extern void sigterm(int); 592 593extern void sigtrace_on(int); 594extern void sigtrace_off(int); 595 596extern void flush_kern(void); 597extern void age(naddr); 598 599extern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 600extern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 601 u_short, u_short, void (*)(struct ag_info *)); 602extern void del_static(naddr, naddr, naddr, int); 603extern void del_redirects(naddr, time_t); 604extern struct rt_entry *rtget(naddr, naddr); 605extern struct rt_entry *rtfind(naddr); 606extern void rtinit(void); 607extern void rtadd(naddr, naddr, u_int, struct rt_spare *); 608extern void rtchange(struct rt_entry *, u_int, struct rt_spare *, char *); 609extern void rtdelete(struct rt_entry *); 610extern void rts_delete(struct rt_entry *, struct rt_spare *); 611extern void rtbad_sub(struct rt_entry *); 612extern void rtswitch(struct rt_entry *, struct rt_spare *); 613extern 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]) 623void rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 624 int); 625 626extern naddr std_mask(naddr); 627extern naddr ripv1_mask_net(naddr, struct interface *); 628extern naddr ripv1_mask_host(naddr,struct interface *); 629#define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 630extern int check_dst(naddr); 631extern struct interface *check_dup(naddr, naddr, naddr, int); 632extern int check_remote(struct interface *); 633extern int addrouteforif(struct interface *); 634extern void ifinit(void); 635extern int walk_bad(struct radix_node *, struct walkarg *); 636extern int if_ok(struct interface *, const char *); 637extern void if_sick(struct interface *); 638extern void if_bad(struct interface *); 639extern void if_link(struct interface *); 640extern struct interface *ifwithaddr(naddr, int, int); 641extern struct interface *ifwithname(char *, naddr); 642extern struct interface *ifwithindex(u_short, int); 643extern struct interface *iflookup(naddr); 644 645extern struct auth *find_auth(struct interface *); 646extern void end_md5_auth(struct ws_buf *, struct auth *); 647 648#define MD5_DIGEST_LEN 16 649typedef 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; 654extern void MD5Init(MD5_CTX*); 655extern void MD5Update(MD5_CTX*, u_char*, u_int); 656extern void MD5Final(u_char[MD5_DIGEST_LEN], MD5_CTX*); 657