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/*
$Header: /cvs/src/chrony/ntp_core.h,v 1.16 2002/02/28 23:27:12 richard Exp $
=======================================================================
chronyd/chronyc - Programs for keeping computer clocks accurate.
**********************************************************************
* Copyright (C) Richard P. Curnow 1997-2002
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************
=======================================================================
Header file for the main NTP protocol engine
*/
#ifndef GOT_NTP_CORE_H
#define GOT_NTP_CORE_H
#include "sysincl.h"
#include "addressing.h"
#include "srcparams.h"
#include "ntp.h"
#include "reports.h"
/* This is a private data type used for storing the instance record for
each source that we are chiming with */
typedef struct NCR_Instance_Record *NCR_Instance;
/* Init and fini functions */
extern void NCR_Initialise(void);
extern void NCR_Finalise(void);
/* Get a new instance for a server */
extern NCR_Instance NCR_GetServerInstance(NTP_Remote_Address *remote_addr, SourceParameters *params);
/* Get a new instance for a peer */
extern NCR_Instance NCR_GetPeerInstance(NTP_Remote_Address *remote_addr, SourceParameters *params);
/* Destroy an instance */
extern void NCR_DestroyInstance(NCR_Instance instance);
/* This routine is called when a new packet arrives off the network,
and it relates to a source we have an ongoing protocol exchange with */
extern void NCR_ProcessNoauthKnown(NTP_Packet *message, struct timeval *now, NCR_Instance data);
/* This routine is called when a new packet arrives off the network,
and we do not recognize its source */
extern void NCR_ProcessNoauthUnknown(NTP_Packet *message, struct timeval *now, NTP_Remote_Address *remote_addr);
/* This routine is called when a new authenticated packet arrives off
the network, and it relates to a source we have an ongoing protocol
exchange with */
extern void NCR_ProcessAuthKnown(NTP_Packet *message, struct timeval *now, NCR_Instance data);
/* This routine is called when a new authenticated packet arrives off
the network, and we do not recognize its source */
extern void NCR_ProcessAuthUnknown(NTP_Packet *message, struct timeval *now, NTP_Remote_Address *remote_addr);
/* Slew receive and transmit times in instance records */
extern void NCR_SlewTimes(NCR_Instance inst, struct timeval *when, double dfreq, double doffset);
/* Take a particular source online (i.e. start sampling it) */
extern void NCR_TakeSourceOnline(NCR_Instance inst);
/* Take a particular source offline (i.e. stop sampling it, without
marking it unreachable in the source selection stuff) */
extern void NCR_TakeSourceOffline(NCR_Instance inst);
extern void NCR_ModifyMinpoll(NCR_Instance inst, int new_minpoll);
extern void NCR_ModifyMaxpoll(NCR_Instance inst, int new_maxpoll);
extern void NCR_ModifyMaxdelay(NCR_Instance inst, double new_max_delay);
extern void NCR_ModifyMaxdelayratio(NCR_Instance inst, double new_max_delay_ratio);
extern void NCR_InitiateSampleBurst(NCR_Instance inst, int n_good_samples, int n_total_samples);
extern void NCR_ReportSource(NCR_Instance inst, RPT_SourceReport *report, struct timeval *now);
extern int NCR_AddAccessRestriction(IPAddr *ip_addr, int subnet_bits, int allow, int all);
extern int NCR_CheckAccessRestriction(IPAddr *ip_addr);
extern void NCR_CycleLogFile(void);
extern void NCR_IncrementActivityCounters(NCR_Instance inst, int *online, int *offline,
int *burst_online, int *burst_offline);
extern NTP_Remote_Address *NCR_GetRemoteAddress(NCR_Instance instance);
#endif /* GOT_NTP_CORE_H */
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