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/*
* The mrouted program is covered by the license in the accompanying file
* named "LICENSE". Use of the mrouted program represents acceptance of
* the terms and conditions listed in that file.
*
* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
* Leland Stanford Junior University.
*
*
* $FreeBSD$
* defs.h,v 3.8.4.15 1998/03/01 02:51:42 fenner Exp
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include <syslog.h>
#include <signal.h>
#include <string.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#ifdef SYSV
#include <sys/sockio.h>
#endif
#ifdef _AIX
#include <time.h>
#endif
#include <sys/time.h>
#include <sys/uio.h>
#include <net/if.h>
#define rtentry kern_rtentry /* XXX !!! UGH */
#include <net/route.h>
#undef rtentry
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <netinet/igmp.h>
#ifdef __FreeBSD__ /* sigh */
#include <osreldate.h>
#if __FreeBSD_version >= 220000
#define rtentry kernel_rtentry
#include <net/route.h>
#undef rtentry
#endif
#endif
#include <netinet/ip_mroute.h>
#ifdef RSRR
#include <sys/un.h>
#endif /* RSRR */
/*XXX*/
typedef u_int u_int32;
#ifndef __P
#ifdef __STDC__
#define __P(x) x
#else
#define __P(x) ()
#endif
#endif
typedef void (*cfunc_t) __P((void *));
typedef void (*ihfunc_t) __P((int, fd_set *));
#include "dvmrp.h"
#include "igmpv2.h"
#include "vif.h"
#include "route.h"
#include "prune.h"
#include "pathnames.h"
#ifdef RSRR
#include "rsrr.h"
#include "rsrr_var.h"
#endif /* RSRR */
/*
* Miscellaneous constants and macros.
*/
#define FALSE 0
#define TRUE 1
#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
#define TIMER_INTERVAL ROUTE_MAX_REPORT_DELAY
#define PROTOCOL_VERSION 3 /* increment when packet format/content changes */
#define MROUTED_VERSION 9 /* not in DVMRP packets at all */
#define DVMRP_CONSTANT 0x000eff00 /* constant portion of 'group' field */
#define MROUTED_LEVEL (DVMRP_CONSTANT | PROTOCOL_VERSION)
/* for IGMP 'group' field of DVMRP messages */
#define LEAF_FLAGS (( vifs_with_neighbors == 1 ) ? 0x010000 : 0)
/* more for IGMP 'group' field of DVMRP messages */
#define DEL_RTE_GROUP 0
#define DEL_ALL_ROUTES 1
/* for Deleting kernel table entries */
/* obnoxious gcc gives an extraneous warning about this constant... */
#if defined(__STDC__) || defined(__GNUC__)
#define JAN_1970 2208988800UL /* 1970 - 1900 in seconds */
#else
#define JAN_1970 2208988800L /* 1970 - 1900 in seconds */
#define const /**/
#endif
#ifdef RSRR
#define BIT_ZERO(X) ((X) = 0)
#define BIT_SET(X,n) ((X) |= 1 << (n))
#define BIT_CLR(X,n) ((X) &= ~(1 << (n)))
#define BIT_TST(X,n) ((X) & 1 << (n))
#endif /* RSRR */
#ifdef SYSV
#define bcopy(a, b, c) memcpy(b, a, c)
#define bzero(s, n) memset((s), 0, (n))
#define setlinebuf(s) setvbuf(s, NULL, _IOLBF, 0)
#endif
#if defined(_AIX) || (defined(BSD) && (BSD >= 199103))
#define HAVE_SA_LEN
#endif
/*
* External declarations for global variables and functions.
*/
#define RECV_BUF_SIZE 8192
extern char *recv_buf;
extern char *send_buf;
extern int igmp_socket;
#ifdef RSRR
extern int rsrr_socket;
#endif /* RSRR */
extern u_int32 allhosts_group;
extern u_int32 allrtrs_group;
extern u_int32 dvmrp_group;
extern u_int32 dvmrp_genid;
#define IF_DEBUG(l) if (debug && debug & (l))
#define DEBUG_PKT 0x0001
#define DEBUG_PRUNE 0x0002
#define DEBUG_ROUTE 0x0004
#define DEBUG_PEER 0x0008
#define DEBUG_CACHE 0x0010
#define DEBUG_TIMEOUT 0x0020
#define DEBUG_IF 0x0040
#define DEBUG_MEMBER 0x0080
#define DEBUG_TRACE 0x0100
#define DEBUG_IGMP 0x0200
#define DEBUG_RTDETAIL 0x0400
#define DEBUG_KERN 0x0800
#define DEBUG_RSRR 0x1000
#define DEBUG_ICMP 0x2000
#define DEFAULT_DEBUG 0x02de /* default if "-d" given without value */
extern int debug;
extern int did_final_init;
extern int routes_changed;
extern int delay_change_reports;
extern unsigned nroutes;
extern struct uvif uvifs[MAXVIFS];
extern vifi_t numvifs;
extern int vifs_down;
extern int udp_socket;
extern int vifs_with_neighbors;
extern char s1[];
extern char s2[];
extern char s3[];
extern char s4[];
#if !(defined(BSD) && (BSD >= 199103))
extern int errno;
extern int sys_nerr;
extern char * sys_errlist[];
#endif
#ifdef OLD_KERNEL
#define MRT_INIT DVMRP_INIT
#define MRT_DONE DVMRP_DONE
#define MRT_ADD_VIF DVMRP_ADD_VIF
#define MRT_DEL_VIF DVMRP_DEL_VIF
#define MRT_ADD_MFC DVMRP_ADD_MFC
#define MRT_DEL_MFC DVMRP_DEL_MFC
#endif
#ifndef IGMP_PIM
#define IGMP_PIM 0x14
#endif
#ifndef IPPROTO_IPIP
#define IPPROTO_IPIP 4
#endif
/*
* The original multicast releases defined
* IGMP_HOST_{MEMBERSHIP_QUERY,MEMBERSHIP_REPORT,NEW_MEMBERSHIP_REPORT
* ,LEAVE_MESSAGE}. Later releases removed the HOST and inserted
* the IGMP version number. NetBSD inserted the version number in
* a different way. mrouted uses the new names, so we #define them
* to the old ones if needed.
*/
#if !defined(IGMP_MEMBERSHIP_QUERY) && defined(IGMP_HOST_MEMBERSHIP_QUERY)
#define IGMP_MEMBERSHIP_QUERY IGMP_HOST_MEMBERSHIP_QUERY
#define IGMP_V2_LEAVE_GROUP IGMP_HOST_LEAVE_MESSAGE
#endif
#ifndef IGMP_V1_MEMBERSHIP_REPORT
#ifdef IGMP_HOST_MEMBERSHIP_REPORT
#define IGMP_V1_MEMBERSHIP_REPORT IGMP_HOST_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT IGMP_HOST_NEW_MEMBERSHIP_REPORT
#endif
#ifdef IGMP_v1_HOST_MEMBERSHIP_REPORT
#define IGMP_V1_MEMBERSHIP_REPORT IGMP_v1_HOST_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT IGMP_v2_HOST_MEMBERSHIP_REPORT
#endif
#endif
/*
* NetBSD also renamed the mtrace types.
*/
#if !defined(IGMP_MTRACE_RESP) && defined(IGMP_MTRACE_REPLY)
#define IGMP_MTRACE_RESP IGMP_MTRACE_REPLY
#define IGMP_MTRACE IGMP_MTRACE_QUERY
#endif
/* main.c */
extern char * scaletime __P((u_long));
extern void log __P((int, int, char *, ...)) __printflike(3, 4);
extern int register_input_handler __P((int, ihfunc_t));
/* igmp.c */
extern void init_igmp __P((void));
extern void accept_igmp __P((int));
extern void build_igmp __P((u_int32, u_int32, int, int, u_int32,
int));
extern void send_igmp __P((u_int32, u_int32, int, int, u_int32,
int));
extern char * igmp_packet_kind __P((u_int, u_int));
extern int igmp_debug_kind __P((u_int, u_int));
/* icmp.c */
extern void init_icmp __P((void));
/* ipip.c */
extern void init_ipip __P((void));
extern void init_ipip_on_vif __P((struct uvif *));
extern void send_ipip __P((u_int32, u_int32, int, int, u_int32,
int, struct uvif *));
/* callout.c */
extern void callout_init __P((void));
extern void free_all_callouts __P((void));
extern void age_callout_queue __P((int));
extern int timer_nextTimer __P((void));
extern int timer_setTimer __P((int, cfunc_t, void *));
extern int timer_clearTimer __P((int));
extern int timer_leftTimer __P((int));
/* route.c */
extern void init_routes __P((void));
extern void start_route_updates __P((void));
extern void update_route __P((u_int32, u_int32, u_int, u_int32,
vifi_t, struct listaddr *));
extern void age_routes __P((void));
extern void expire_all_routes __P((void));
extern void free_all_routes __P((void));
extern void accept_probe __P((u_int32, u_int32, char *, int,
u_int32));
extern void accept_report __P((u_int32, u_int32, char *, int,
u_int32));
extern struct rtentry * determine_route __P((u_int32 src));
extern void report __P((int, vifi_t, u_int32));
extern void report_to_all_neighbors __P((int));
extern int report_next_chunk __P((void));
extern void blaster_alloc __P((vifi_t));
extern void add_vif_to_routes __P((vifi_t));
extern void delete_vif_from_routes __P((vifi_t));
extern void add_neighbor_to_routes __P((vifi_t, int));
extern void delete_neighbor_from_routes __P((u_int32,
vifi_t, int));
extern void dump_routes __P((FILE *fp));
/* vif.c */
extern void init_vifs __P((void));
extern void zero_vif __P((struct uvif *, int));
extern void init_installvifs __P((void));
extern void check_vif_state __P((void));
extern void send_on_vif __P((struct uvif *, u_int32, int, int));
extern vifi_t find_vif __P((u_int32, u_int32));
extern void age_vifs __P((void));
extern void dump_vifs __P((FILE *));
extern void stop_all_vifs __P((void));
extern struct listaddr *neighbor_info __P((vifi_t, u_int32));
extern void accept_group_report __P((u_int32, u_int32,
u_int32, int));
extern void query_groups __P((void));
extern void probe_for_neighbors __P((void));
extern struct listaddr *update_neighbor __P((vifi_t, u_int32, int, char *, int,
u_int32));
extern void accept_neighbor_request __P((u_int32, u_int32));
extern void accept_neighbor_request2 __P((u_int32, u_int32));
extern void accept_info_request __P((u_int32, u_int32,
u_char *, int));
extern void accept_info_reply __P((u_int32, u_int32,
u_char *, int));
extern void accept_neighbors __P((u_int32, u_int32,
u_char *, int, u_int32));
extern void accept_neighbors2 __P((u_int32, u_int32,
u_char *, int, u_int32));
extern void accept_leave_message __P((u_int32, u_int32,
u_int32));
extern void accept_membership_query __P((u_int32, u_int32,
u_int32, int));
/* config.c */
extern void config_vifs_from_kernel __P((void));
/* cfparse.y */
extern void config_vifs_from_file __P((void));
/* inet.c */
extern int inet_valid_host __P((u_int32));
extern int inet_valid_mask __P((u_int32));
extern int inet_valid_subnet __P((u_int32, u_int32));
extern char * inet_fmt __P((u_int32, char *));
extern char * inet_fmts __P((u_int32, u_int32, char *));
extern u_int32 inet_parse __P((char *, int));
extern int inet_cksum __P((u_short *, u_int));
/* prune.c */
extern unsigned kroutes;
extern void determine_forwvifs __P((struct gtable *));
extern void send_prune_or_graft __P((struct gtable *));
extern void add_table_entry __P((u_int32, u_int32));
extern void del_table_entry __P((struct rtentry *,
u_int32, u_int));
extern void update_table_entry __P((struct rtentry *, u_int32));
extern int find_src_grp __P((u_int32, u_int32, u_int32));
extern void init_ktable __P((void));
extern void steal_sources __P((struct rtentry *));
extern void reset_neighbor_state __P((vifi_t, u_int32));
extern int grplst_mem __P((vifi_t, u_int32));
extern void free_all_prunes __P((void));
extern void age_table_entry __P((void));
extern void dump_cache __P((FILE *));
extern void update_lclgrp __P((vifi_t, u_int32));
extern void delete_lclgrp __P((vifi_t, u_int32));
extern void chkgrp_graft __P((vifi_t, u_int32));
extern void accept_prune __P((u_int32, u_int32, char *, int));
extern void accept_graft __P((u_int32, u_int32, char *, int));
extern void accept_g_ack __P((u_int32, u_int32, char *, int));
/* u_int is promoted u_char */
extern void accept_mtrace __P((u_int32, u_int32,
u_int32, char *, u_int, int));
/* kern.c */
extern void k_set_rcvbuf __P((int, int));
extern void k_hdr_include __P((int));
extern void k_set_ttl __P((int));
extern void k_set_loop __P((int));
extern void k_set_if __P((u_int32));
extern void k_join __P((u_int32, u_int32));
extern void k_leave __P((u_int32, u_int32));
extern void k_init_dvmrp __P((void));
extern void k_stop_dvmrp __P((void));
extern void k_add_vif __P((vifi_t, struct uvif *));
extern void k_del_vif __P((vifi_t));
extern void k_add_rg __P((u_int32, struct gtable *));
extern int k_del_rg __P((u_int32, struct gtable *));
extern int k_get_version __P((void));
#ifdef SNMP
/* prune.c */
extern struct gtable * find_grp __P((u_int32));
extern struct stable * find_grp_src __P((struct gtable *, u_int32));
extern int next_grp_src_mask __P((struct gtable **,
struct stable **, u_int32,
u_int32, u_int32));
extern void refresh_sg __P((struct sioc_sg_req *, struct gtable *,
struct stable *));
extern int next_child __P((struct gtable **, struct stable **,
u_int32, u_int32, u_int32,
vifi_t *));
/* route.c */
extern struct rtentry * snmp_find_route __P((u_int32, u_int32));
extern int next_route __P((struct rtentry **, u_int32, u_int32));
extern int next_route_child __P((struct rtentry **,
u_int32, u_int32, vifi_t *));
#endif
#ifdef RSRR
/* prune.c */
extern struct gtable *kernel_table;
extern struct gtable *gtp;
/* rsrr.c */
extern void rsrr_init __P((void));
extern void rsrr_clean __P((void));
extern void rsrr_cache_send __P((struct gtable *, int));
extern void rsrr_cache_clean __P((struct gtable *));
#endif /* RSRR */
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