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NetBSD/usr.sbin/pim6dd/defs.h
itojun b1ba1c6a53 $KAME$ cleanup. address PR 11616 (CMSG_SPACE should be CMSG_LEN). 
couple of stability/protocol conformance fixes.  sync with kame.
2000-12-04 07:05:47 +00:00

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/* $KAME: defs.h,v 1.10 2000/12/04 06:33:09 itojun Exp $ */
/*
* Copyright (c) 1998 by the University of Oregon.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation in source and binary forms for lawful
* purposes and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both
* the copyright notice and this permission notice appear in supporting
* documentation, and that any documentation, advertising materials,
* and other materials related to such distribution and use acknowledge
* that the software was developed by the University of Oregon.
* The name of the University of Oregon may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THE UNIVERSITY OF OREGON DOES NOT MAKE ANY REPRESENTATIONS
* ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS
* PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
* NON-INFRINGEMENT.
*
* IN NO EVENT SHALL UO, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
* TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH,
* THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Other copyrights might apply to parts of this software and are so
* noted when applicable.
*/
/*
* Questions concerning this software should be directed to
* Kurt Windisch (kurtw@antc.uoregon.edu)
*/
/*
* Part of this program has been derived from PIM sparse-mode pimd.
* The pimd program is covered by the license in the accompanying file
* named "LICENSE.pimd".
*
* The pimd program is COPYRIGHT 1998 by University of Southern California.
*
* Part of this program has been derived from mrouted.
* The mrouted program is covered by the license in the accompanying file
* named "LICENSE.mrouted".
*
* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
* Leland Stanford Junior University.
*
*/
#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>
#include <sys/queue.h>
#include <fcntl.h>
#if ((defined(SYSV)) || (defined(__bsdi__)) || ((defined SunOS) && (SunOS < 50)))
#include <sys/sockio.h>
#endif /* SYSV || __bsdi__ || SunOS 4.x */
#include <sys/time.h>
#include <net/if.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include <net/if_var.h>
#endif /* __FreeBSD__ >= 3 */
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/icmp6.h>
#include <netinet6/in6_var.h>
#include <netinet/ip6.h>
#include <arpa/inet.h>
#ifdef __FreeBSD__ /* sigh */
#include <osreldate.h>
#endif /* __FreeBSD__ */
#if (defined(__bsdi__)) || (defined(__FreeBSD__) && (__FreeBSD_version >= 220000))
#define rtentry kernel_rtentry
#include <net/route.h>
#undef rtentry
#endif /* __bsdi__ or __FreeBSD_version >= 220000 */
#include <netinet/ip_mroute.h>
#include <netinet6/ip6_mroute.h>
#include <strings.h>
#ifdef RSRR
#include <sys/un.h>
#endif /* RSRR */
typedef u_int u_int32;
typedef u_short u_int16;
typedef u_char u_int8;
#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 "pimdd.h"
#include "mrt.h"
#include "mld6.h"
#include "vif.h"
#include "debug.h"
#include "pathnames.h"
#ifdef RSRR
#include "rsrr.h"
#include "rsrr_var.h"
#endif /* RSRR */
/*
* Miscellaneous constants and macros
*/
/* #if (!(defined(__bsdi__)) && !(defined(KERNEL))) */
#ifndef KERNEL
#define max(a, b) ((a) < (b) ? (b) : (a))
#define min(a, b) ((a) > (b) ? (b) : (a))
#endif
/*
* Various definitions to make it working for different platforms
*/
/* The old style sockaddr definition doesn't have sa_len */
#if (defined(BSD) && (BSD >= 199006)) /* sa_len was added with 4.3-Reno */
#define HAVE_SA_LEN
#endif
/* Versions of Solaris older than 2.6 don't have routing sockets. */
/* XXX TODO: check FreeBSD version and add all other platforms */
#if ((defined(SunOS) && SunOS >=56) || (defined __FreeBSD__) || (defined IRIX) || (defined __bsdi__) || defined(__NetBSD__))
#define HAVE_ROUTING_SOCKETS
#endif
#define TRUE 1
#define FALSE 0
#define CREATE TRUE
#define DONT_CREATE FALSE
#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
/* 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
#define MINHLIM 1 /* min hoplim in the packets send locally */
#define MAX_IP_PACKET_LEN 576
#define MIN_IP_HEADER_LEN 20
#define MAX_IP_HEADER_LEN 60
/*
* The IGMPv2 <netinet/in.h> defines INADDR_ALLRTRS_GROUP, but earlier
* ones don't, so we define it conditionally here.
*/
#ifndef INADDR_ALLRTRS_GROUP
/* address for multicast mtrace msg */
#define INADDR_ALLRTRS_GROUP (u_int32)0xe0000002 /* 224.0.0.2 */
#endif
#ifndef INADDR_MAX_LOCAL_GROUP
define INADDR_MAX_LOCAL_GROUP (u_int32)0xe00000ff /* 224.0.0.255 */
#endif
#define INADDR_ANY_N (u_int32)0x00000000 /* INADDR_ANY in
* network order */
#define CLASSD_PREFIX (u_int32)0xe0000000 /* 224.0.0.0 */
#define ALL_MCAST_GROUPS_ADDR (u_int32)0xe0000000 /* 224.0.0.0 */
#define ALL_MCAST_GROUPS_LENGTH 4
/* Used by DVMRP */
#define DEFAULT_METRIC 1 /* default subnet/tunnel metric */
#define DEFAULT_THRESHOLD 1 /* default subnet/tunnel threshold */
#define TIMER_INTERVAL 5 /* 5 sec virtual timer granularity */
#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)
#define RANDOM() lrand48()
#else
#define RANDOM() random()
#endif /* SYSV */
/*
* External declarations for global variables and functions.
*/
#define RECV_BUF_SIZE 64*1024 /* Maximum buff size to send
* or receive packet */
#define SO_RECV_BUF_SIZE_MAX 256*1024
#define SO_RECV_BUF_SIZE_MIN 48*1024
/* TODO: describe the variables and clean up */
extern char *mld6_recv_buf;
extern char *mld6_send_buf;
extern char *pim6_recv_buf;
extern char *pim6_send_buf;
extern int mld6_socket;
extern int pim6_socket;
extern struct sockaddr_in6 allnodes_group;
extern struct sockaddr_in6 allrouters_group;
extern struct sockaddr_in6 allpim6routers_group;
extern if_set nbr_mifs;
#ifdef RSRR
extern int rsrr_socket;
#endif /* RSRR */
extern u_long virtual_time;
extern char configfilename[];
extern u_int32 default_source_metric;
extern u_int32 default_source_preference;
extern srcentry_t *srclist;
extern grpentry_t *grplist;
extern struct uvif uvifs[];
extern vifi_t numvifs;
extern int total_interfaces;
extern int phys_vif;
extern int udp_socket;
extern int vifs_down;
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
#ifndef IGMP_MEMBERSHIP_QUERY
#define IGMP_MEMBERSHIP_QUERY IGMP_HOST_MEMBERSHIP_QUERY
#if !(defined(__NetBSD__))
#define IGMP_V1_MEMBERSHIP_REPORT IGMP_HOST_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT IGMP_HOST_NEW_MEMBERSHIP_REPORT
#else
#define IGMP_V1_MEMBERSHIP_REPORT IGMP_v1_HOST_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT IGMP_v2_HOST_MEMBERSHIP_REPORT
#endif
#define IGMP_V2_LEAVE_GROUP IGMP_HOST_LEAVE_MESSAGE
#endif
#if defined(__NetBSD__)
#define IGMP_MTRACE_RESP IGMP_MTRACE_REPLY
#define IGMP_MTRACE IGMP_MTRACE_QUERY
#endif
/* For timeout. The timers count down */
#define SET_TIMER(timer, value) (timer) = (value)
#define IF_TIMER_SET(timer) if ((timer) > 0)
#define IF_TIMER_NOT_SET(timer) if ((timer) <= 0)
#define FIRE_TIMER(timer) (timer) = 0
#define IF_TIMEOUT(value) \
if (!(((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL)))
#define IF_NOT_TIMEOUT(value) \
if (((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL))
#define TIMEOUT(value) \
(!(((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL)))
#define NOT_TIMEOUT(value) \
(((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL))
#define ELSE else /* To make emacs cc-mode happy */
/*
* External function definitions
*/
/* 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 void timer_clearTimer __P((int));
extern int timer_leftTimer __P((int));
/* config.c */
extern void config_vifs_from_kernel __P((void));
extern void config_vifs_from_file __P((void));
/* debug.c */
extern char *packet_kind __P((u_int proto, u_int type, u_int code));
extern int debug_kind __P((u_int proto, u_int type, u_int code));
extern void log __P((int, int, char *, ...))
__attribute__((__format__(__printf__, 3, 4)));
extern void dump_mldqueriers __P((FILE *));
extern int log_level __P((u_int proto, u_int type, u_int code));
extern void dump __P((int i));
extern void fdump __P((int i));
extern void cdump __P((int i));
extern void dump_vifs __P((FILE *fp));
extern void dump_pim_mrt __P((FILE *fp));
extern void dump_lcl_grp __P((FILE *fp));
/* dvmrp_proto.c */
extern void dvmrp_accept_probe __P((u_int32 src, u_int32 dst,
char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_report __P((u_int32 src, u_int32 dst,
char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_info_request __P((u_int32 src, u_int32 dst,
u_char *p, int datalen));
extern void dvmrp_accept_info_reply __P((u_int32 src, u_int32 dst,
u_char *p, int datalen));
extern void dvmrp_accept_neighbors __P((u_int32 src, u_int32 dst,
u_char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_neighbors2 __P((u_int32 src, u_int32 dst,
u_char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_prune __P((u_int32 src, u_int32 dst,
char *p, int datalen));
extern void dvmrp_accept_graft __P((u_int32 src, u_int32 dst,
char *p, int datalen));
extern void dvmrp_accept_g_ack __P((u_int32 src, u_int32 dst,
char *p, int datalen));
/* mld6.c */
void init_mld6 __P((void));
void send_mld6 __P((int type, int code, struct sockaddr_in6 *src,
struct sockaddr_in6 *dst, struct in6_addr *group,
int index, int delay, int datalen, int alert));
/* mld6_proto.c */
extern void query_groups __P((struct uvif *v));
extern int check_grp_membership __P((struct uvif *v,
struct sockaddr_in6 *group));
extern void accept_listener_query __P((struct sockaddr_in6 *src,
struct in6_addr *dst,
struct in6_addr *group,
int tmo));
extern void accept_listener_report __P((struct sockaddr_in6 *src,
struct in6_addr *dst,
struct in6_addr *group));
extern void accept_listener_done __P((struct sockaddr_in6 *src,
struct in6_addr *dst,
struct in6_addr *group));
extern int check_multicast_listener __P((struct uvif *v,
struct sockaddr_in6 *group));
/* igmp.c */
#if 0
extern void init_igmp __P((void));
extern void send_igmp __P((char *buf, u_int32 src, u_int32 dst,
int type, int code, u_int32 group,
int datalen));
/* igmp_proto.c */
extern void query_groups __P((struct uvif *v));
extern void accept_membership_query __P((u_int32 src, u_int32 dst,
u_int32 group, int tmo));
extern void accept_group_report __P((u_int32 src, u_int32 dst,
u_int32 group, int r_type));
extern void accept_leave_message __P((u_int32 src, u_int32 dst,
u_int32 group));
#endif
#if 0
/* inet.c */
extern int inet_cksum __P((u_int16 *addr, u_int len));
extern int inet_valid_host __P((u_int32 naddr));
extern int inet_valid_mask __P((u_int32 mask));
extern int inet_valid_subnet __P((u_int32 nsubnet, u_int32 nmask));
extern char *inet_fmt __P((u_int32, char *s));
#ifdef NOSUCHDEF
extern char *inet_fmts __P((u_int32 addr, u_int32 mask, char *s));
#endif /* NOSUCHDEF */
extern char *netname __P((u_int32 addr, u_int32 mask));
extern u_int32 inet_parse __P((char *s, int n));
#endif
/* inet6.c */
extern int inet6_equal __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_lessoreq __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_lessthan __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_localif_address __P((struct sockaddr_in6 *sa,
struct uvif *v));
extern int inet6_greaterthan __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_greateroreq __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_match_prefix __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2,
struct in6_addr *mask));
extern int inet6_mask2plen __P((struct in6_addr *mask));
extern int inet6_uvif2scopeid __P((struct sockaddr_in6 *sa, struct uvif *v));
extern int inet6_valid_host __P((struct sockaddr_in6 *addr));
extern char *inet6_fmt __P((struct in6_addr *addr));
extern char *ifindex2str __P((int ifindex));
extern char *net6name __P((struct in6_addr *prefix,
struct in6_addr *mask));
/* kern.c */
extern void k_set_rcvbuf __P((int socket, int bufsize, int minsize));
extern void k_hdr_include __P((int socket, int bool));
extern void k_set_hlim __P((int socket, int t));
extern void k_set_loop __P((int socket, int l));
extern void k_set_if __P((int socket, u_int ifindex));
extern void k_join __P((int socket, struct in6_addr *grp,
u_int ifindex));
extern void k_leave __P((int socket, struct in6_addr *grp,
u_int ifindex));
extern void k_init_pim __P((int));
extern void k_stop_pim __P((int));
extern int k_del_mfc __P((int socket, struct sockaddr_in6 *source,
struct sockaddr_in6 *group));
extern int k_chg_mfc __P((int socket, struct sockaddr_in6 *source,
struct sockaddr_in6 *group, vifi_t iif,
if_set *oifs));
extern void k_add_vif __P((int socket, vifi_t vifi, struct uvif *v));
extern void k_del_vif __P((int socket, vifi_t vifi));
extern int k_get_vif_count __P((vifi_t vifi, struct vif_count *retval));
extern int k_get_sg_cnt __P((int socket, struct sockaddr_in6 *source,
struct sockaddr_in6 *group,
struct sg_count *retval));
/* main.c */
extern int register_input_handler __P((int fd, ihfunc_t func));
/* mrt.c */
extern void init_pim6_mrt __P((void));
extern mrtentry_t *find_route __P((struct sockaddr_in6 *source,
struct sockaddr_in6 *group,
u_int16 flags, char create));
extern grpentry_t *find_group __P((struct sockaddr_in6 *group));
extern srcentry_t *find_source __P((struct sockaddr_in6 *source));
extern void delete_mrtentry __P((mrtentry_t *mrtentry_ptr));
extern void delete_srcentry __P((srcentry_t *srcentry_ptr));
extern void delete_grpentry __P((grpentry_t *grpentry_ptr));
extern struct mrtfilter *search_filter __P((struct in6_addr *));
extern struct mrtfilter *add_filter __P((int, struct in6_addr *,
struct in6_addr *, int));
/* pim6.c */
extern void init_pim6 __P((void));
extern void send_pim6 __P((char *buf, struct sockaddr_in6 *src,
struct sockaddr_in6 *dst,
int type, int datalen));
/* pim6_poto.c */
extern int receive_pim6_hello __P((struct sockaddr_in6 *src,
char *pim_message, int datalen));
extern int send_pim6_hello __P((struct uvif *v, u_int16 holdtime));
extern void delete_pim6_nbr __P((pim_nbr_entry_t *nbr_delete));
extern int receive_pim6_join_prune __P((struct sockaddr_in6 *src,
char *pim_message, int datalen));
extern int send_pim6_jp __P((mrtentry_t *mrtentry_ptr, int action,
mifi_t mifi,
struct sockaddr_in6 *target_addr,
u_int16 holdtime, int echo));
extern int receive_pim6_assert __P((struct sockaddr_in6 *src,
char *pim_message, int datalen));
extern int send_pim6_assert __P((struct sockaddr_in6 *source,
struct sockaddr_in6 *group,
mifi_t mifi,
mrtentry_t *mrtentry_ptr));
extern void delete_pim6_graft_entry __P((mrtentry_t *mrtentry_ptr));
extern int receive_pim6_graft __P((struct sockaddr_in6 *src,
char *pim_message, int datalen,
int pimtype));
extern int send_pim6_graft __P((mrtentry_t *mrtentry_ptr));
#if 0
/* pim.c */
extern void init_pim __P((void));
extern void send_pim __P((char *buf, u_int32 src, u_int32 dst,
int type, int datalen));
extern void send_pim_unicast __P((char *buf, u_int32 src, u_int32 dst,
int type, int datalen));
/* pim_proto.c */
extern int receive_pim_hello __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen));
extern int send_pim_hello __P((struct uvif *v, u_int16 holdtime));
extern void delete_pim_nbr __P((pim_nbr_entry_t *nbr_delete));
extern int receive_pim_join_prune __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen));
extern int send_pim_jp __P((mrtentry_t *mrtentry_ptr, int action,
vifi_t vifi, u_int32 target_addr,
u_int16 holdtime));
extern int receive_pim_assert __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen));
extern int send_pim_assert __P((u_int32 source, u_int32 group,
vifi_t vifi,
mrtentry_t *mrtentry_ptr));
extern void delete_pim_graft_entry __P((mrtentry_t *mrtentry_ptr));
extern int receive_pim_graft __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen,
int pimtype));
#endif
/* route.c */
extern int set_incoming __P((srcentry_t *srcentry_ptr,
int srctype));
extern vifi_t get_iif __P((struct sockaddr_in6 *source));
extern pim_nbr_entry_t *find_pim6_nbr __P((struct sockaddr_in6 *source));
extern int add_sg_oif __P((mrtentry_t *mrtentry_ptr,
vifi_t vifi,
u_int16 holdtime,
int update_holdtime));
extern void add_leaf __P((vifi_t vifi,
struct sockaddr_in6 *source,
struct sockaddr_in6 *group));
extern void delete_leaf __P((vifi_t vifi,
struct sockaddr_in6 *source,
struct sockaddr_in6 *group));
extern void set_leaves __P((mrtentry_t *mrtentry_ptr));
extern int change_interfaces __P((mrtentry_t *mrtentry_ptr,
vifi_t new_iif,
if_set *new_pruned_oifs,
if_set *new_leaves_,
if_set *new_asserted_oifs));
extern void calc_oifs __P((mrtentry_t *mrtentry_ptr,
if_set *oifs_ptr));
extern void process_kernel_call __P((void));
extern int delete_vif_from_mrt __P((vifi_t vifi));
extern void trigger_join_alert __P((mrtentry_t *mrtentry_ptr));
extern void trigger_prune_alert __P((mrtentry_t *mrtentry_ptr));
/* routesock.c */
extern int k_req_incoming __P((struct sockaddr_in6 *source,
struct rpfctl *rpfp));
#ifdef HAVE_ROUTING_SOCKETS
extern int init_routesock __P((void));
#endif /* HAVE_ROUTING_SOCKETS */
#ifdef RSRR
#define gtable mrtentry
#define RSRR_NOTIFICATION_OK TRUE
#define RSRR_NOTIFICATION_FALSE FALSE
/* 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 *));
extern void rsrr_cache_bring_up __P((struct gtable *));
#endif /* RSRR */
/* timer.c */
extern void init_timers __P((void));
extern void age_vifs __P((void));
extern void age_routes __P((void));
extern int clean_srclist __P((void));
/* trace.c */
/* u_int is promoted u_char */
extern void accept_mtrace __P((struct sockaddr_in6 *src,
struct in6_addr *dst, struct in6_addr *group,
int ifindex, char *data, u_int no, int datalen));
/* vif.c */
extern void init_vifs __P((void));
extern void stop_all_vifs __P((void));
extern void check_vif_state __P((void));
extern vifi_t local_address __P((struct sockaddr_in6 *src));
extern vifi_t find_vif_direct __P((struct sockaddr_in6 *src));
extern vifi_t find_vif_direct_local __P((struct sockaddr_in6 *src));
extern struct sockaddr_in6 *max_global_address __P((void));
extern struct sockaddr_in6 *uv_global __P((vifi_t vifi));
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