defs.h revision 19885
118316Swollman/* 218316Swollman * Copyright (c) 1983, 1988, 1993 318316Swollman * The Regents of the University of California. All rights reserved. 418316Swollman * 518316Swollman * Redistribution and use in source and binary forms, with or without 618316Swollman * modification, are permitted provided that the following conditions 718316Swollman * are met: 818316Swollman * 1. Redistributions of source code must retain the above copyright 918316Swollman * notice, this list of conditions and the following disclaimer. 1018316Swollman * 2. Redistributions in binary form must reproduce the above copyright 1118316Swollman * notice, this list of conditions and the following disclaimer in the 1218316Swollman * documentation and/or other materials provided with the distribution. 1318316Swollman * 3. All advertising materials mentioning features or use of this software 1418316Swollman * must display the following acknowledgement: 1518316Swollman * This product includes software developed by the University of 1618316Swollman * California, Berkeley and its contributors. 1718316Swollman * 4. Neither the name of the University nor the names of its contributors 1818316Swollman * may be used to endorse or promote products derived from this software 1918316Swollman * without specific prior written permission. 2018316Swollman * 2118316Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2218316Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2318316Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2418316Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2518316Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2618316Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2718316Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2818316Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2918316Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3018316Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3118316Swollman * SUCH DAMAGE. 3218316Swollman * 3318316Swollman * @(#)defs.h 8.1 (Berkeley) 6/5/93 3419885Swollman * $Id: defs.h,v 1.2 1996/09/16 17:03:29 wollman Exp $ 3518316Swollman */ 3618316Swollman 3718316Swollman/* Definitions for RIPv2 routing process. 3818316Swollman * 3918316Swollman * This code is based on the 4.4BSD `routed` daemon, with extensions to 4018316Swollman * support: 4118316Swollman * RIPv2, including variable length subnet masks. 4218316Swollman * Router Discovery 4318316Swollman * aggregate routes in the kernel tables. 4418316Swollman * aggregate advertised routes. 4518316Swollman * maintain spare routes for faster selection of another gateway 4618316Swollman * when the current gateway dies. 4718316Swollman * timers on routes with second granularity so that selection 4818316Swollman * of a new route does not wait 30-60 seconds. 4918316Swollman * tolerance of static routes. 5018316Swollman * tell the kernel hop counts 5118316Swollman * do not advertise if ipforwarding=0 5218316Swollman * 5318316Swollman * The vestigual support for other protocols has been removed. There 5418316Swollman * is no likelihood that IETF RIPv1 or RIPv2 will ever be used with 5518316Swollman * other protocols. The result is far smaller, faster, cleaner, and 5618316Swollman * perhaps understandable. 5718316Swollman * 5818316Swollman * The accumulation of special flags and kludges added over the many 5918316Swollman * years have been simplified and integrated. 6018316Swollman */ 6118316Swollman 6218316Swollman#include <stdio.h> 6318316Swollman#include <netdb.h> 6418316Swollman#include <stdlib.h> 6518316Swollman#include <unistd.h> 6618316Swollman#include <errno.h> 6718316Swollman#include <string.h> 6818316Swollman#ifdef sgi 6918316Swollman#include <strings.h> 7018316Swollman#include <bstring.h> 7118316Swollman#endif 7218316Swollman#include <stdarg.h> 7318316Swollman#include <syslog.h> 7418316Swollman#include <time.h> 7518316Swollman#include <sys/types.h> 7618316Swollman#include <sys/param.h> 7718316Swollman#include <sys/ioctl.h> 7818316Swollman#include <sys/sysctl.h> 7918316Swollman#include <sys/socket.h> 8018316Swollman#ifdef sgi 8118316Swollman#include <net/radix.h> 8218316Swollman#else 8318316Swollman#include "radix.h" 8418316Swollman#endif 8518316Swollman#include <net/if.h> 8618316Swollman#include <net/route.h> 8718316Swollman#include <net/if_dl.h> 8818316Swollman#include <netinet/in.h> 8918316Swollman#include <arpa/inet.h> 9018316Swollman#define RIPVERSION RIPv2 9118316Swollman#include <protocols/routed.h> 9218316Swollman 9319885Swollman#ifdef sgi 9419885Swollman#define USE_PASSIFNAME 9519885Swollman#endif 9618316Swollman 9719885Swollman 9818316Swollman/* Type of an IP address. 9918316Swollman * Some systems do not like to pass structures, so do not use in_addr. 10018316Swollman * Some systems think a long has 64 bits, which would be a gross waste. 10118316Swollman * So define it here so it can be changed for the target system. 10218316Swollman * It should be defined somewhere netinet/in.h, but it is not. 10318316Swollman */ 10418316Swollman#ifdef sgi 10518316Swollman#define naddr __uint32_t 10618316Swollman#else 10718316Swollman#ifdef __NetBSD__ 10818316Swollman#define naddr u_int32_t 10918316Swollman#else 11018316Swollman#define naddr u_long 11118316Swollman#endif 11218316Swollman#define _HAVE_SA_LEN 11318316Swollman#define _HAVE_SIN_LEN 11418316Swollman#endif 11518316Swollman 11618316Swollman/* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at 11718316Swollman * the dstaddr of point-to-point interfaces. 11818316Swollman */ 11918316Swollman/* #define MCAST_PPP_BUG */ 12018316Swollman 12118316Swollman#define NEVER (24*60*60) /* a long time */ 12218316Swollman#define EPOCH NEVER /* bias time by this to avoid <0 */ 12318316Swollman 12418316Swollman/* Scan the kernel regularly to see if any interfaces have appeared or been 12518316Swollman * turned off. These must be less than STALE_TIME. 12618316Swollman */ 12718316Swollman#define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */ 12818316Swollman#define CHECK_ACT_INTERVAL 30 /* when advertising */ 12918316Swollman#define CHECK_QUIET_INTERVAL 300 /* when not */ 13018316Swollman 13118316Swollman#define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l))) 13218316Swollman 13319885Swollman/* Metric used for fake default routes. It ought to be 15, but when 13419885Swollman * processing advertised routes, previous versions of `routed` added 13519885Swollman * to the received metric and discarded the route if the total was 16 13619885Swollman * or larger. 13719885Swollman */ 13819885Swollman#define FAKE_METRIC (HOPCNT_INFINITY-2) 13918316Swollman 14019885Swollman 14118316Swollman/* Router Discovery parameters */ 14218316Swollman#ifndef sgi 14318316Swollman#define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */ 14418316Swollman#endif 14518316Swollman#define MaxMaxAdvertiseInterval 1800 14618316Swollman#define MinMaxAdvertiseInterval 4 14718316Swollman#define DefMaxAdvertiseInterval 600 14818316Swollman#define DEF_PreferenceLevel 0 14918316Swollman#define MIN_PreferenceLevel 0x80000000 15018316Swollman 15118316Swollman#define MAX_INITIAL_ADVERT_INTERVAL 16 15218316Swollman#define MAX_INITIAL_ADVERTS 3 15318316Swollman#define MAX_RESPONSE_DELAY 2 15418316Swollman 15518316Swollman#define MAX_SOLICITATION_DELAY 1 15618316Swollman#define SOLICITATION_INTERVAL 3 15718316Swollman#define MAX_SOLICITATIONS 3 15818316Swollman 15918316Swollman 16019885Swollman/* Bloated packet size for systems that simply add authentication to 16119885Swollman * full-sized packets 16219885Swollman */ 16319885Swollman#define OVER_MAXPACKETSIZE (MAXPACKETSIZE+sizeof(struct netinfo)*2) 16418316Swollman/* typical packet buffers */ 16518316Swollmanunion pkt_buf { 16619885Swollman char packet[OVER_MAXPACKETSIZE*2]; 16718316Swollman struct rip rip; 16818316Swollman}; 16918316Swollman 17018316Swollman 17119885Swollman/* No more routes than this, to protect ourself in case something goes 17219885Swollman * whacko and starts broadcasting zillions of bogus routes. 17318316Swollman */ 17418316Swollman#define MAX_ROUTES (128*1024) 17518316Swollmanextern int total_routes; 17618316Swollman 17718316Swollman/* Main, daemon routing table structure 17818316Swollman */ 17918316Swollmanstruct rt_entry { 18018316Swollman struct radix_node rt_nodes[2]; /* radix tree glue */ 18118316Swollman u_int rt_state; 18218316Swollman# define RS_IF 0x001 /* for network interface */ 18318316Swollman# define RS_NET_INT 0x002 /* authority route */ 18418316Swollman# define RS_NET_SYN 0x004 /* fake net route for subnet */ 18518316Swollman# define RS_NO_NET_SYN (RS_LOCAL | RS_LOCAL | RS_IF) 18618316Swollman# define RS_SUBNET 0x008 /* subnet route from any source */ 18718316Swollman# define RS_LOCAL 0x010 /* loopback for pt-to-pt */ 18818316Swollman# define RS_MHOME 0x020 /* from -m */ 18918316Swollman# define RS_STATIC 0x040 /* from the kernel */ 19018316Swollman# define RS_RDISC 0x080 /* from router discovery */ 19118316Swollman struct sockaddr_in rt_dst_sock; 19218316Swollman naddr rt_mask; 19318316Swollman struct rt_spare { 19418316Swollman struct interface *rts_ifp; 19518316Swollman naddr rts_gate; /* forward packets here */ 19618316Swollman naddr rts_router; /* on the authority of this router */ 19718316Swollman char rts_metric; 19818316Swollman u_short rts_tag; 19918316Swollman time_t rts_time; /* timer to junk stale routes */ 20018316Swollman#define NUM_SPARES 4 20118316Swollman } rt_spares[NUM_SPARES]; 20218316Swollman u_int rt_seqno; /* when last changed */ 20318316Swollman char rt_poison_metric; /* to notice maximum recently */ 20418316Swollman time_t rt_poison_time; /* advertised metric */ 20518316Swollman}; 20618316Swollman#define rt_dst rt_dst_sock.sin_addr.s_addr 20718316Swollman#define rt_ifp rt_spares[0].rts_ifp 20818316Swollman#define rt_gate rt_spares[0].rts_gate 20918316Swollman#define rt_router rt_spares[0].rts_router 21018316Swollman#define rt_metric rt_spares[0].rts_metric 21118316Swollman#define rt_tag rt_spares[0].rts_tag 21218316Swollman#define rt_time rt_spares[0].rts_time 21318316Swollman 21418316Swollman#define HOST_MASK 0xffffffff 21518316Swollman#define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK) 21618316Swollman 21718316Swollman/* age all routes that 21818316Swollman * are not from -g, -m, or static routes from the kernel 21918316Swollman * not unbroken interface routes 22018316Swollman * but not broken interfaces 22118316Swollman * nor non-passive, remote interfaces that are not aliases 22218316Swollman * (i.e. remote & metric=0) 22318316Swollman */ 22418316Swollman#define AGE_RT(rt_state,ifp) (0 == ((rt_state) & (RS_MHOME | RS_STATIC \ 22518316Swollman | RS_NET_SYN | RS_RDISC)) \ 22618316Swollman && (!((rt_state) & RS_IF) \ 22718316Swollman || (ifp) == 0 \ 22818316Swollman || (((ifp)->int_state & IS_REMOTE) \ 22918316Swollman && !((ifp)->int_state & IS_PASSIVE)))) 23018316Swollman 23118316Swollman/* true if A is better than B 23218316Swollman * Better if 23318316Swollman * - A is not a poisoned route 23418316Swollman * - and A is not stale 23518316Swollman * - and A has a shorter path 23618316Swollman * - or is the router speaking for itself 23718316Swollman * - or the current route is equal but stale 23818316Swollman * - or it is a host route advertised by a system for itself 23918316Swollman */ 24018316Swollman#define BETTER_LINK(rt,A,B) ((A)->rts_metric < HOPCNT_INFINITY \ 24118316Swollman && now_stale <= (A)->rts_time \ 24218316Swollman && ((A)->rts_metric < (B)->rts_metric \ 24318316Swollman || ((A)->rts_gate == (A)->rts_router \ 24418316Swollman && (B)->rts_gate != (B)->rts_router) \ 24518316Swollman || ((A)->rts_metric == (B)->rts_metric \ 24618316Swollman && now_stale > (B)->rts_time) \ 24718316Swollman || (RT_ISHOST(rt) \ 24818316Swollman && (rt)->rt_dst == (A)->rts_router \ 24918316Swollman && (A)->rts_metric == (B)->rts_metric))) 25018316Swollman 25118316Swollman 25218316Swollman/* An "interface" is similar to a kernel ifnet structure, except it also 25318316Swollman * handles "logical" or "IS_REMOTE" interfaces (remote gateways). 25418316Swollman */ 25518316Swollmanstruct interface { 25619885Swollman struct interface *int_next, **int_prev; 25719885Swollman struct interface *int_ahash, **int_ahash_prev; 25819885Swollman struct interface *int_bhash, **int_bhash_prev; 25919885Swollman struct interface *int_rlink, **int_rlink_prev; 26019885Swollman struct interface *int_nhash, **int_nhash_prev; 26118316Swollman char int_name[IFNAMSIZ+15+1]; /* big enough for IS_REMOTE */ 26218316Swollman u_short int_index; 26318316Swollman naddr int_addr; /* address on this host (net order) */ 26418316Swollman naddr int_brdaddr; /* broadcast address (n) */ 26518316Swollman naddr int_dstaddr; /* other end of pt-to-pt link (n) */ 26618316Swollman naddr int_net; /* working network # (host order)*/ 26718316Swollman naddr int_mask; /* working net mask (host order) */ 26818316Swollman naddr int_ripv1_mask; /* for inferring a mask (n) */ 26918316Swollman naddr int_std_addr; /* class A/B/C address (n) */ 27018316Swollman naddr int_std_net; /* class A/B/C network (h) */ 27118316Swollman naddr int_std_mask; /* class A/B/C netmask (h) */ 27218316Swollman int int_rip_sock; /* for queries */ 27318316Swollman int int_if_flags; /* some bits copied from kernel */ 27418316Swollman u_int int_state; 27518316Swollman time_t int_act_time; /* last thought healthy */ 27619885Swollman time_t int_query_time; 27718316Swollman u_short int_transitions; /* times gone up-down */ 27818316Swollman char int_metric; 27918316Swollman char int_d_metric; /* for faked default route */ 28018316Swollman struct int_data { 28118316Swollman u_int ipackets; /* previous network stats */ 28218316Swollman u_int ierrors; 28318316Swollman u_int opackets; 28418316Swollman u_int oerrors; 28518316Swollman#ifdef sgi 28618316Swollman u_int odrops; 28718316Swollman#endif 28818316Swollman time_t ts; /* timestamp on network stats */ 28918316Swollman } int_data; 29019885Swollman struct auth { /* authentication info */ 29119885Swollman u_char type; 29219885Swollman# define MAX_AUTH_KEYS 3 29319885Swollman struct auth_key { 29419885Swollman u_char key[RIP_AUTH_PW_LEN]; 29519885Swollman u_char keyid; 29619885Swollman time_t start, end; 29719885Swollman } keys[MAX_AUTH_KEYS]; 29819885Swollman } int_auth; 29918316Swollman int int_rdisc_pref; /* advertised rdisc preference */ 30018316Swollman int int_rdisc_int; /* MaxAdvertiseInterval */ 30118316Swollman int int_rdisc_cnt; 30218316Swollman struct timeval int_rdisc_timer; 30318316Swollman}; 30418316Swollman 30518316Swollman/* bits in int_state */ 30618316Swollman#define IS_ALIAS 0x0000001 /* interface alias */ 30718316Swollman#define IS_SUBNET 0x0000002 /* interface on subnetted network */ 30818316Swollman#define IS_REMOTE 0x0000004 /* interface is not on this machine */ 30918316Swollman#define IS_PASSIVE 0x0000008 /* remote and does not do RIP */ 31018316Swollman#define IS_EXTERNAL 0x0000010 /* handled by EGP or something */ 31118316Swollman#define IS_CHECKED 0x0000020 /* still exists */ 31218316Swollman#define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */ 31318316Swollman#define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */ 31419885Swollman#define IS_DISTRUST 0x0000100 /* ignore untrusted routers */ 31518316Swollman#define IS_BROKE 0x0000200 /* seems to be broken */ 31618316Swollman#define IS_SICK 0x0000400 /* seems to be broken */ 31718316Swollman#define IS_DUP 0x0000800 /* has a duplicate address */ 31819885Swollman/* 0x0001000 spare */ 31918316Swollman#define IS_NEED_NET_SYN 0x0002000 /* need RS_NET_SYN route */ 32018316Swollman#define IS_NO_AG 0x0004000 /* do not aggregate subnets */ 32118316Swollman#define IS_NO_SUPER_AG 0x0008000 /* do not aggregate networks */ 32218316Swollman#define IS_NO_RIPV1_IN 0x0010000 /* no RIPv1 input at all */ 32318316Swollman#define IS_NO_RIPV2_IN 0x0020000 /* no RIPv2 input at all */ 32418316Swollman#define IS_NO_RIP_IN (IS_NO_RIPV1_IN | IS_NO_RIPV2_IN) 32518316Swollman#define IS_RIP_IN_OFF(s) (((s) & IS_NO_RIP_IN) == IS_NO_RIP_IN) 32618316Swollman#define IS_NO_RIPV1_OUT 0x0040000 /* no RIPv1 output at all */ 32718316Swollman#define IS_NO_RIPV2_OUT 0x0080000 /* no RIPv2 output at all */ 32818316Swollman#define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT) 32918316Swollman#define IS_NO_RIP (IS_NO_RIP_OUT | IS_NO_RIP_IN) 33018316Swollman#define IS_RIP_OUT_OFF(s) (((s) & IS_NO_RIP_OUT) == IS_NO_RIP_OUT) 33118316Swollman#define IS_RIP_OFF(s) (((s) & IS_NO_RIP) == IS_NO_RIP) 33218316Swollman#define IS_NO_ADV_IN 0x0100000 33318316Swollman#define IS_NO_SOL_OUT 0x0200000 /* no solicitations */ 33418316Swollman#define IS_SOL_OUT 0x0400000 /* send solicitations */ 33518316Swollman#define GROUP_IS_SOL (IS_NO_ADV_IN|IS_NO_SOL_OUT) 33618316Swollman#define IS_NO_ADV_OUT 0x0800000 /* do not advertise rdisc */ 33718316Swollman#define IS_ADV_OUT 0x1000000 /* advertise rdisc */ 33818316Swollman#define GROUP_IS_ADV (IS_NO_ADV_OUT|IS_ADV_OUT) 33918316Swollman#define IS_BCAST_RDISC 0x2000000 /* broadcast instead of multicast */ 34018316Swollman#define IS_NO_RDISC (IS_NO_ADV_IN | IS_NO_SOL_OUT | IS_NO_ADV_OUT) 34118316Swollman#define IS_PM_RDISC 0x4000000 /* poor-man's router discovery */ 34218316Swollman 34318316Swollman#ifdef sgi 34418316Swollman#define IFF_UP_RUNNING (IFF_RUNNING|IFF_UP) 34518316Swollman#else 34618316Swollman#define IFF_UP_RUNNING IFF_UP 34718316Swollman#endif 34818316Swollman#define iff_alive(f) (((f) & IFF_UP_RUNNING) == IFF_UP_RUNNING) 34918316Swollman 35018316Swollman 35118316Swollman/* Information for aggregating routes */ 35218316Swollman#define NUM_AG_SLOTS 32 35318316Swollmanstruct ag_info { 35418316Swollman struct ag_info *ag_fine; /* slot with finer netmask */ 35518316Swollman struct ag_info *ag_cors; /* more coarse netmask */ 35618316Swollman naddr ag_dst_h; /* destination in host byte order */ 35718316Swollman naddr ag_mask; 35818316Swollman naddr ag_gate; 35918316Swollman naddr ag_nhop; 36018316Swollman char ag_metric; /* metric to be advertised */ 36118316Swollman char ag_pref; /* aggregate based on this */ 36218316Swollman u_int ag_seqno; 36318316Swollman u_short ag_tag; 36418316Swollman u_short ag_state; 36518316Swollman#define AGS_SUPPRESS 0x001 /* combine with coaser mask */ 36618316Swollman#define AGS_PROMOTE 0x002 /* synthesize combined routes */ 36718316Swollman#define AGS_REDUN0 0x004 /* redundant, finer routes output */ 36818316Swollman#define AGS_REDUN1 0x008 36918316Swollman#define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \ 37018316Swollman == (AGS_REDUN0 | AGS_REDUN1)) 37118316Swollman#define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */ 37218316Swollman#define AGS_IF 0x020 /* for an interface */ 37318316Swollman#define AGS_RIPV2 0x040 /* send only as RIPv2 */ 37418316Swollman#define AGS_FINE_GATE 0x080 /* ignore differing ag_gate when this 37518316Swollman * has the finer netmask */ 37618316Swollman#define AGS_CORS_GATE 0x100 /* ignore differing gate when this 37718316Swollman * has the coarser netmaks */ 37818316Swollman#define AGS_SPLIT_HZ 0x200 /* suppress for split horizon */ 37918316Swollman 38018316Swollman /* some bits are set if they are set on either route */ 38118316Swollman#define AGS_PROMOTE_EITHER (AGS_RIPV2 | AGS_GATEWAY | \ 38218316Swollman AGS_SUPPRESS | AGS_CORS_GATE) 38318316Swollman}; 38418316Swollman 38518316Swollman 38618316Swollman/* parameters for interfaces */ 38718316Swollmanextern struct parm { 38818316Swollman struct parm *parm_next; 38918316Swollman char parm_name[IFNAMSIZ+1]; 39019885Swollman naddr parm_net; 39118316Swollman naddr parm_mask; 39218316Swollman 39318316Swollman char parm_d_metric; 39418316Swollman u_int parm_int_state; 39518316Swollman int parm_rdisc_pref; 39618316Swollman int parm_rdisc_int; 39719885Swollman struct auth parm_auth; 39818316Swollman} *parms; 39918316Swollman 40018316Swollman/* authority for internal networks */ 40118316Swollmanextern struct intnet { 40218316Swollman struct intnet *intnet_next; 40318316Swollman naddr intnet_addr; 40418316Swollman naddr intnet_mask; 40518316Swollman char intnet_metric; 40618316Swollman} *intnets; 40718316Swollman 40819885Swollman/* trusted routers */ 40919885Swollmanextern struct tgate { 41019885Swollman struct tgate *tgate_next; 41119885Swollman naddr tgate_addr; 41219885Swollman} *tgates; 41318316Swollman 41419885Swollmanenum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST, 41519885Swollman NO_OUT_MULTICAST, NO_OUT_RIPV2}; 41618316Swollman 41719885Swollman/* common output buffers */ 41819885Swollmanextern struct ws_buf { 41919885Swollman struct rip *buf; 42019885Swollman struct netinfo *n; 42119885Swollman struct netinfo *base; 42219885Swollman struct netinfo *lim; 42319885Swollman enum output_type type; 42419885Swollman} v12buf, v2buf; 42519885Swollman 42618316Swollmanextern pid_t mypid; 42718316Swollmanextern naddr myaddr; /* main address of this system */ 42818316Swollman 42918316Swollmanextern int stopint; /* !=0 to stop */ 43018316Swollman 43118316Swollmanextern int sock_max; 43218316Swollmanextern int rip_sock; /* RIP socket */ 43318316Swollmanextern struct interface *rip_sock_mcast; /* current multicast interface */ 43418316Swollmanextern int rt_sock; /* routing socket */ 43518316Swollmanextern int rt_sock_seqno; 43618316Swollmanextern int rdisc_sock; /* router-discovery raw socket */ 43718316Swollman 43818316Swollmanextern int seqno; /* sequence number for messages */ 43918316Swollmanextern int supplier; /* process should supply updates */ 44018316Swollmanextern int lookforinterfaces; /* 1=probe for new up interfaces */ 44118316Swollmanextern int supplier_set; /* -s or -q requested */ 44218316Swollmanextern int ridhosts; /* 1=reduce host routes */ 44318316Swollmanextern int mhome; /* 1=want multi-homed host route */ 44418316Swollmanextern int advertise_mhome; /* 1=must continue adverising it */ 44518316Swollmanextern int auth_ok; /* 1=ignore auth if we do not care */ 44618316Swollman 44719885Swollmanextern struct timeval clk; /* system clock's idea of time */ 44819885Swollmanextern struct timeval epoch; /* system clock when started */ 44918316Swollmanextern struct timeval now; /* current idea of time */ 45018316Swollmanextern time_t now_stale; 45118316Swollmanextern time_t now_expire; 45218316Swollmanextern time_t now_garbage; 45318316Swollman 45418316Swollmanextern struct timeval next_bcast; /* next general broadcast */ 45518316Swollmanextern struct timeval age_timer; /* next check of old routes */ 45618316Swollmanextern struct timeval no_flash; /* inhibit flash update until then */ 45718316Swollmanextern struct timeval rdisc_timer; /* next advert. or solicitation */ 45818316Swollmanextern int rdisc_ok; /* using solicited route */ 45918316Swollman 46018316Swollmanextern struct timeval ifinit_timer; /* time to check interfaces */ 46118316Swollman 46218316Swollmanextern naddr loopaddr; /* our address on loopback */ 46318316Swollmanextern int tot_interfaces; /* # of remote and local interfaces */ 46418316Swollmanextern int rip_interfaces; /* # of interfaces doing RIP */ 46518316Swollmanextern struct interface *ifnet; /* all interfaces */ 46619885Swollmanextern struct interface *remote_if; /* remote interfaces */ 46718316Swollmanextern int have_ripv1_out; /* have a RIPv1 interface */ 46818316Swollmanextern int have_ripv1_in; 46918316Swollmanextern int need_flash; /* flash update needed */ 47018316Swollmanextern struct timeval need_kern; /* need to update kernel table */ 47118316Swollmanextern int update_seqno; /* a route has changed */ 47218316Swollman 47318316Swollmanextern u_int tracelevel, new_tracelevel; 47418316Swollman#define MAX_TRACELEVEL 4 47518316Swollman#define TRACEKERNEL (tracelevel >= 4) /* log kernel changes */ 47618316Swollman#define TRACECONTENTS (tracelevel >= 3) /* display packet contents */ 47718316Swollman#define TRACEPACKETS (tracelevel >= 2) /* note packets */ 47818316Swollman#define TRACEACTIONS (tracelevel != 0) 47918316Swollmanextern FILE *ftrace; /* output trace file */ 48018316Swollman 48118316Swollmanextern struct radix_node_head *rhead; 48218316Swollman 48318316Swollman 48418316Swollman#ifdef sgi 48518316Swollman/* Fix conflicts */ 48618316Swollman#define dup2(x,y) BSDdup2(x,y) 48718316Swollman#endif /* sgi */ 48818316Swollman 48918316Swollmanextern void fix_sock(int, char *); 49018316Swollmanextern void fix_select(void); 49118316Swollmanextern void rip_off(void); 49218316Swollmanextern void rip_on(struct interface *); 49318316Swollman 49419885Swollmanextern void bufinit(void); 49519885Swollmanextern int output(enum output_type, struct sockaddr_in *, 49619885Swollman struct interface *, struct rip *, int); 49719885Swollmanextern void clr_ws_buf(struct ws_buf *, struct auth_key *, struct interface *); 49818316Swollmanextern void rip_query(void); 49918316Swollmanextern void rip_bcast(int); 50018316Swollmanextern void supply(struct sockaddr_in *, struct interface *, 50119885Swollman enum output_type, int, int, int); 50218316Swollman 50318316Swollmanextern void msglog(char *, ...); 50419885Swollmanstruct msg_limit { 50519885Swollman naddr addr; 50619885Swollman time_t until; 50719885Swollman}; 50819885Swollmanextern void msglim(struct msg_limit *, naddr, char *, ...); 50918316Swollman#define LOGERR(msg) msglog(msg ": %s", strerror(errno)) 51018316Swollmanextern void logbad(int, char *, ...); 51118316Swollman#define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno)) 51218316Swollman#ifdef DEBUG 51318316Swollman#define DBGERR(dump,msg) BADERR(dump,msg) 51418316Swollman#else 51518316Swollman#define DBGERR(dump,msg) LOGERR(msg) 51618316Swollman#endif 51718316Swollmanextern char *naddr_ntoa(naddr); 51818316Swollmanextern char *saddr_ntoa(struct sockaddr *); 51918316Swollman 52018316Swollmanextern void *rtmalloc(size_t, char *); 52118316Swollmanextern void timevaladd(struct timeval *, struct timeval *); 52218316Swollmanextern void intvl_random(struct timeval *, u_long, u_long); 52318316Swollmanextern int getnet(char *, naddr *, naddr *); 52418316Swollmanextern int gethost(char *, naddr *); 52518316Swollmanextern void gwkludge(void); 52618316Swollmanextern char *parse_parms(char *); 52718316Swollmanextern char *check_parms(struct parm *); 52818316Swollmanextern void get_parms(struct interface *); 52918316Swollman 53018316Swollmanextern void lastlog(void); 53118316Swollmanextern void trace_on(char *, int); 53218316Swollmanextern void trace_off(char*, ...); 53318316Swollmanextern void trace_flush(void); 53419885Swollmanextern void set_tracelevel(int); 53518316Swollmanextern void trace_kernel(char *, ...); 53618316Swollmanextern void trace_act(char *, ...); 53718316Swollmanextern void trace_pkt(char *, ...); 53818316Swollmanextern void trace_add_del(char *, struct rt_entry *); 53918316Swollmanextern void trace_change(struct rt_entry *, u_int, naddr, naddr, int, 54018316Swollman u_short, struct interface *, time_t, char *); 54118316Swollmanextern void trace_if(char *, struct interface *); 54218316Swollmanextern void trace_upslot(struct rt_entry *, struct rt_spare *, 54318316Swollman naddr, naddr, 54418316Swollman struct interface *, int, u_short, time_t); 54518316Swollmanextern void trace_rip(char*, char*, struct sockaddr_in *, 54618316Swollman struct interface *, struct rip *, int); 54718316Swollmanextern char *addrname(naddr, naddr, int); 54818316Swollman 54918316Swollmanextern void rdisc_age(naddr); 55018316Swollmanextern void set_rdisc_mg(struct interface *, int); 55118316Swollmanextern void set_supplier(void); 55218316Swollmanextern void if_bad_rdisc(struct interface *); 55318316Swollmanextern void if_ok_rdisc(struct interface *); 55418316Swollmanextern void read_rip(int, struct interface *); 55518316Swollmanextern void read_rt(void); 55618316Swollmanextern void read_d(void); 55718316Swollmanextern void rdisc_adv(void); 55818316Swollmanextern void rdisc_sol(void); 55918316Swollman 56018316Swollmanextern void sigalrm(int); 56118316Swollmanextern void sigterm(int); 56218316Swollman 56318316Swollmanextern void sigtrace_on(int); 56418316Swollmanextern void sigtrace_off(int); 56518316Swollman 56618316Swollmanextern void flush_kern(void); 56718316Swollmanextern void age(naddr); 56818316Swollman 56918316Swollmanextern void ag_flush(naddr, naddr, void (*)(struct ag_info *)); 57018316Swollmanextern void ag_check(naddr, naddr, naddr, naddr, char, char, u_int, 57118316Swollman u_short, u_short, void (*)(struct ag_info *)); 57218316Swollmanextern void del_static(naddr, naddr, int); 57318316Swollmanextern void del_redirects(naddr, time_t); 57418316Swollmanextern struct rt_entry *rtget(naddr, naddr); 57518316Swollmanextern struct rt_entry *rtfind(naddr); 57618316Swollmanextern void rtinit(void); 57718316Swollmanextern void rtadd(naddr, naddr, naddr, naddr, 57818316Swollman int, u_short, u_int, struct interface *); 57918316Swollmanextern void rtchange(struct rt_entry *, u_int, naddr,naddr, int, u_short, 58018316Swollman struct interface *ifp, time_t, char *); 58118316Swollmanextern void rtdelete(struct rt_entry *); 58218316Swollmanextern void rtbad_sub(struct rt_entry *); 58318316Swollmanextern void rtswitch(struct rt_entry *, struct rt_spare *); 58418316Swollmanextern void rtbad(struct rt_entry *); 58518316Swollman 58618316Swollman 58718316Swollman#define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr) 58818316Swollman#define INFO_DST(I) ((I)->rti_info[RTAX_DST]) 58918316Swollman#define INFO_GATE(I) ((I)->rti_info[RTAX_GATEWAY]) 59018316Swollman#define INFO_MASK(I) ((I)->rti_info[RTAX_NETMASK]) 59118316Swollman#define INFO_IFA(I) ((I)->rti_info[RTAX_IFA]) 59218316Swollman#define INFO_IFP(I) ((I)->rti_info[RTAX_IFP]) 59318316Swollman#define INFO_AUTHOR(I) ((I)->rti_info[RTAX_AUTHOR]) 59418316Swollman#define INFO_BRD(I) ((I)->rti_info[RTAX_BRD]) 59518316Swollmanvoid rt_xaddrs(struct rt_addrinfo *, struct sockaddr *, struct sockaddr *, 59618316Swollman int); 59718316Swollman 59818316Swollmanextern naddr std_mask(naddr); 59918316Swollmanextern naddr ripv1_mask_net(naddr, struct interface *); 60018316Swollmanextern naddr ripv1_mask_host(naddr,struct interface *); 60118316Swollman#define on_net(a,net,mask) (((ntohl(a) ^ (net)) & (mask)) == 0) 60218316Swollmanextern int check_dst(naddr); 60319885Swollmanextern struct interface *check_dup(naddr, naddr, naddr, int); 60419885Swollmanextern int check_remote(struct interface *); 60519885Swollmanextern int addrouteforif(register struct interface *); 60618316Swollmanextern void ifinit(void); 60718316Swollmanextern int walk_bad(struct radix_node *, struct walkarg *); 60818316Swollmanextern int if_ok(struct interface *, char *); 60918316Swollmanextern void if_sick(struct interface *); 61018316Swollmanextern void if_bad(struct interface *); 61119885Swollmanextern void if_link(struct interface *); 61218316Swollmanextern struct interface *ifwithaddr(naddr, int, int); 61318316Swollmanextern struct interface *ifwithname(char *, naddr); 61418316Swollmanextern struct interface *ifwithindex(u_short); 61518316Swollmanextern struct interface *iflookup(naddr); 61619885Swollman 61719885Swollmanextern struct auth_key *find_auth(struct interface *); 61819885Swollmanextern void end_md5_auth(struct ws_buf *, struct auth_key *); 61919885Swollman 62019885Swollman#include <md5.h> 621