300 lines
9.2 KiB
C
300 lines
9.2 KiB
C
/* $NetBSD: defs.h,v 1.16 2020/09/07 18:37:21 christos Exp $ */
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/*
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* The mrouted program is covered by the license in the accompanying file
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* named "LICENSE". Use of the mrouted program represents acceptance of
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* the terms and conditions listed in that file.
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*
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* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
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* Leland Stanford Junior University.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <syslog.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#ifdef SYSV
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#include <sys/sockio.h>
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#endif
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#include <sys/time.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/igmp.h>
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#include <netinet/ip_mroute.h>
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#ifdef RSRR
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#include <sys/un.h>
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#endif /* RSRR */
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typedef void (*cfunc_t)(void *);
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typedef void (*ihfunc_t)(int, fd_set *);
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#include "dvmrp.h"
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#include "vif.h"
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#include "route.h"
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#include "prune.h"
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#include "pathnames.h"
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#ifdef RSRR
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#include "rsrr.h"
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#include "rsrr_var.h"
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#endif /* RSRR */
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/*
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* Miscellaneous constants and macros.
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*/
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#define FALSE 0
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#define TRUE 1
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#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
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#define TIMER_INTERVAL ROUTE_MAX_REPORT_DELAY
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#define VENDOR_CODE 1 /* Get a new vendor code if you make significant
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* changes to mrouted. */
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#define PROTOCOL_VERSION 3 /* increment when packet format/content changes */
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#define MROUTED_VERSION 8 /* increment on local changes or bug fixes, */
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/* reset to 0 whever PROTOCOL_VERSION increments */
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#define MROUTED_LEVEL ((MROUTED_VERSION << 8) | PROTOCOL_VERSION | \
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((NF_PRUNE | NF_GENID | NF_MTRACE) << 16) | \
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(VENDOR_CODE << 24))
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/* for IGMP 'group' field of DVMRP messages */
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#define LEAF_FLAGS (( vifs_with_neighbors == 1 ) ? 0x010000 : 0)
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/* more for IGMP 'group' field of DVMRP messages */
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#define DEL_RTE_GROUP 0
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#define DEL_ALL_ROUTES 1
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/* for Deleting kernel table entries */
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/* obnoxious gcc gives an extraneous warning about this constant... */
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#define JAN_1970 2208988800UL /* 1970 - 1900 in seconds */
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#ifdef RSRR
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#define BIT_ZERO(X) ((X) = 0)
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#define BIT_SET(X,n) ((X) |= 1 << (n))
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#define BIT_CLR(X,n) ((X) &= ~(1 << (n)))
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#define BIT_TST(X,n) ((X) & 1 << (n))
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#endif /* RSRR */
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#ifdef SYSV
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#define bcopy(a, b, c) memcpy(b, a, c)
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#define bzero(s, n) memset((s), 0, (n))
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#define setlinebuf(s) setvbuf(s, NULL, _IOLBF, 0)
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#define signal(s,f) sigset(s,f)
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#endif
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/*
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* External declarations for global variables and functions.
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*/
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#define RECV_BUF_SIZE 8192
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extern char *recv_buf;
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extern char *send_buf;
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extern size_t send_buflen;
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extern int igmp_socket;
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#ifdef RSRR
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extern int rsrr_socket;
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#endif /* RSRR */
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extern u_int32_t allhosts_group;
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extern u_int32_t allrtrs_group;
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extern u_int32_t dvmrp_group;
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extern u_int32_t dvmrp_genid;
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#define DEFAULT_DEBUG 2 /* default if "-d" given without value */
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extern int debug;
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extern u_char pruning;
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extern int routes_changed;
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extern int delay_change_reports;
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extern unsigned nroutes;
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extern struct uvif uvifs[MAXVIFS];
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extern vifi_t numvifs;
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extern int vifs_down;
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extern int udp_socket;
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extern int vifs_with_neighbors;
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#if !(defined(BSD) && (BSD >= 199103))
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extern int errno;
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extern int sys_nerr;
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extern char * sys_errlist[];
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#endif
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#ifdef OLD_KERNEL
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#define MRT_INIT DVMRP_INIT
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#define MRT_DONE DVMRP_DONE
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#define MRT_ADD_VIF DVMRP_ADD_VIF
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#define MRT_DEL_VIF DVMRP_DEL_VIF
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#define MRT_ADD_MFC DVMRP_ADD_MFC
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#define MRT_DEL_MFC DVMRP_DEL_MFC
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#define IGMP_PIM 0x14
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#endif
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/* main.c */
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extern void logit(int, int, const char *, ...)
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__attribute__((__format__(__printf__, 3, 4)));
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extern int register_input_handler(int fd, ihfunc_t func);
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/* igmp.c */
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extern void init_igmp(void);
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extern void accept_igmp(int recvlen);
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extern void send_igmp(u_int32_t src, u_int32_t dst, int type,
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int code, u_int32_t group, int datalen);
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/* callout.c */
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extern void callout_init(void);
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extern void age_callout_queue(void);
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extern int timer_setTimer(int delay, cfunc_t action, char *data);
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extern void timer_clearTimer(int timer_id);
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/* route.c */
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extern void init_routes(void);
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extern void start_route_updates(void);
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extern void update_route(u_int32_t origin, u_int32_t mask,
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u_int metric, u_int32_t src, vifi_t vifi);
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extern void age_routes(void);
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extern void expire_all_routes(void);
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extern void free_all_routes(void);
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extern void accept_probe(u_int32_t src, u_int32_t dst,
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char *p, int datalen, u_int32_t level);
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extern void accept_report(u_int32_t src, u_int32_t dst,
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char *p, int datalen, u_int32_t level);
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extern struct rtentry * determine_route(u_int32_t src);
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extern void report(int which_routes, vifi_t vifi, u_int32_t dst);
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extern void report_to_all_neighbors(int which_routes);
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extern int report_next_chunk(void);
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extern void add_vif_to_routes(vifi_t vifi);
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extern void delete_vif_from_routes(vifi_t vifi);
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extern void delete_neighbor_from_routes(u_int32_t addr,
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vifi_t vifi);
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extern void dump_routes(FILE *fp);
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extern void start_route_updates(void);
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/* vif.c */
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extern void init_vifs(void);
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extern void check_vif_state(void);
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extern vifi_t find_vif(u_int32_t src, u_int32_t dst);
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extern void age_vifs(void);
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extern void dump_vifs(FILE *fp);
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extern void stop_all_vifs(void);
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extern struct listaddr *neighbor_info(vifi_t vifi, u_int32_t addr);
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extern void accept_group_report(u_int32_t src, u_int32_t dst,
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u_int32_t group, int r_type);
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extern void query_groups(void);
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extern void probe_for_neighbors(void);
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extern int update_neighbor(vifi_t vifi, u_int32_t addr,
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int msgtype, char *p, int datalen,
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u_int32_t level);
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extern void accept_neighbor_request(u_int32_t src, u_int32_t dst);
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extern void accept_neighbor_request2(u_int32_t src, u_int32_t dst);
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extern void accept_neighbors(u_int32_t src, u_int32_t dst,
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u_char *p, int datalen,
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u_int32_t level);
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extern void accept_neighbors2(u_int32_t src, u_int32_t dst,
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u_char *p, int datalen,
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u_int32_t level);
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extern void accept_leave_message(u_int32_t src, u_int32_t dst,
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u_int32_t group);
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extern void accept_membership_query(u_int32_t src, u_int32_t dst,
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u_int32_t group, int tmo);
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/* config.c */
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extern void config_vifs_from_kernel(void);
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/* cfparse.y */
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extern void config_vifs_from_file(void);
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/* inet.c */
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extern int inet_valid_host(u_int32_t naddr);
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extern int inet_valid_mask(u_int32_t mask);
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extern int inet_valid_subnet(u_int32_t nsubnet, u_int32_t nmask);
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extern char * inet_fmt(u_int32_t addr);
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extern char * inet_fmts(u_int32_t addr, u_int32_t mask);
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extern u_int32_t inet_parse(char *s, int *);
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extern int inet_cksum(const void *addr, u_int len);
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/* prune.c */
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extern unsigned kroutes;
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extern void add_table_entry(u_int32_t origin, u_int32_t mcastgrp);
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extern void del_table_entry(struct rtentry *r,
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u_int32_t mcastgrp, u_int del_flag);
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extern void update_table_entry(struct rtentry *r);
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extern void init_ktable(void);
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extern void accept_prune(u_int32_t src, u_int32_t dst, char *p,
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int datalen);
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extern void steal_sources(struct rtentry *rt);
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extern void reset_neighbor_state(vifi_t vifi, u_int32_t addr);
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extern int grplst_mem(vifi_t vifi, u_int32_t mcastgrp);
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extern int scoped_addr(vifi_t vifi, u_int32_t addr);
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extern void free_all_prunes(void);
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extern void age_table_entry(void);
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extern void dump_cache(FILE *fp2);
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extern void update_lclgrp(vifi_t vifi, u_int32_t mcastgrp);
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extern void delete_lclgrp(vifi_t vifi, u_int32_t mcastgrp);
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extern void chkgrp_graft(vifi_t vifi, u_int32_t mcastgrp);
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extern void accept_graft(u_int32_t src, u_int32_t dst, char *p,
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int datalen);
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extern void accept_g_ack(u_int32_t src, u_int32_t dst, char *p,
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int datalen);
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/* u_int is promoted u_char */
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extern void accept_mtrace(u_int32_t src, u_int32_t dst,
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u_int32_t group, char *data, u_int no,
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int datalen);
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extern int find_src_grp(u_int32_t, u_int32_t, u_int32_t);
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/* kern.c */
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extern void k_set_rcvbuf(int);
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extern void k_hdr_include(int);
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extern void k_set_ttl(int);
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extern void k_set_loop(int);
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extern void k_set_if(u_int32_t);
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extern void k_join(u_int32_t, u_int32_t);
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extern void k_leave(u_int32_t, u_int32_t);
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extern void k_init_dvmrp(void);
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extern void k_stop_dvmrp(void);
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extern void k_add_vif(vifi_t, struct uvif *);
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extern void k_del_vif(vifi_t);
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extern void k_add_rg(u_int32_t, struct gtable *);
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extern int k_del_rg(u_int32_t, struct gtable *);
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extern int k_get_version(void);
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#ifdef SNMP
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/* prune.c */
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extern struct rtentry * snmp_find_route();
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extern struct gtable * find_grp();
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extern struct stable * find_grp_src();
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#endif
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#ifdef RSRR
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/* prune.c */
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extern struct gtable *kernel_table;
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extern struct gtable *gtp;
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extern int find_src_grp(u_int32_t src, u_int32_t mask,
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u_int32_t grp);
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/* rsrr.c */
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extern void rsrr_init(void);
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extern void rsrr_read(int f, fd_set *rfd);
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extern void rsrr_clean(void);
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extern void rsrr_cache_send(struct gtable *gt, int notify);
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extern void rsrr_cache_clean(struct gtable *gt);
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#endif /* RSRR */
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/* vif.c */
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extern void accept_info_reply(u_int32_t, u_int32_t, u_char *, int);
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extern void accept_info_request(u_int32_t, u_int32_t,
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u_char *, int);
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extern void init_installvifs(void);
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