777303f130
Allow different hash functions to be used in the NTP and cmdmon protocols. This breaks the cmdmon protocol compatibility. Extended key file format is used to specify the hash functions for chronyd and new authhash command is added to chronyc. MD5 is the default and the only function included in the chrony source code, other functions will be available from libraries.
117 lines
4.4 KiB
C
117 lines
4.4 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Richard P. Curnow 1997-2003
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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Various utility functions
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*/
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#ifndef GOT_UTIL_H
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#define GOT_UTIL_H
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#include "sysincl.h"
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#include "addressing.h"
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#include "ntp.h"
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#include "candm.h"
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#include "hash.h"
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/* Convert a timeval into a floating point number of seconds */
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extern void UTI_TimevalToDouble(struct timeval *a, double *b);
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/* Convert a number of seconds expressed in floating point into a
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timeval */
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extern void UTI_DoubleToTimeval(double a, struct timeval *b);
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/* Returns -1 if a comes earlier than b, 0 if a is the same time as b,
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and +1 if a comes after b */
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extern int UTI_CompareTimevals(struct timeval *a, struct timeval *b);
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/* Normalise a struct timeval, by adding or subtracting seconds to bring
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its microseconds field into range */
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extern void UTI_NormaliseTimeval(struct timeval *x);
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/* Calculate result = a - b */
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extern void UTI_DiffTimevals(struct timeval *result, struct timeval *a, struct timeval *b);
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/* Calculate result = a - b and return as a double */
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extern void UTI_DiffTimevalsToDouble(double *result, struct timeval *a, struct timeval *b);
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/* Add a double increment to a timeval to get a new one. 'start' is
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the starting time, 'end' is the result that we return. This is
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safe to use if start and end are the same */
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extern void UTI_AddDoubleToTimeval(struct timeval *start, double increment, struct timeval *end);
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/* Calculate the average and difference (as a double) of two timevals */
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extern void UTI_AverageDiffTimevals(struct timeval *earlier, struct timeval *later, struct timeval *average, double *diff);
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/* Convert a timeval into a temporary string, largely for diagnostic
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display */
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extern char *UTI_TimevalToString(struct timeval *tv);
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/* Convert an NTP timestamp into a temporary string, largely for
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diagnostic display */
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extern char *UTI_TimestampToString(NTP_int64 *ts);
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/* Convert ref_id into a temporary string, for diagnostics */
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extern char *UTI_RefidToString(uint32_t ref_id);
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/* Convert an IP address to string, for diagnostics */
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extern char *UTI_IPToString(IPAddr *ip);
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extern int UTI_StringToIP(const char *addr, IPAddr *ip);
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extern uint32_t UTI_IPToRefid(IPAddr *ip);
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extern void UTI_IPHostToNetwork(IPAddr *src, IPAddr *dest);
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extern void UTI_IPNetworkToHost(IPAddr *src, IPAddr *dest);
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extern int UTI_CompareIPs(IPAddr *a, IPAddr *b, IPAddr *mask);
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extern char *UTI_TimeToLogForm(time_t t);
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/* Adjust time following a frequency/offset change */
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extern void UTI_AdjustTimeval(struct timeval *old_tv, struct timeval *when, struct timeval *new_tv, double *delta, double dfreq, double doffset);
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extern void UTI_TimevalToInt64(struct timeval *src, NTP_int64 *dest);
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extern void UTI_Int64ToTimeval(NTP_int64 *src, struct timeval *dest);
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extern void UTI_TimevalNetworkToHost(Timeval *src, struct timeval *dest);
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extern void UTI_TimevalHostToNetwork(struct timeval *src, Timeval *dest);
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extern double UTI_FloatNetworkToHost(Float x);
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extern Float UTI_FloatHostToNetwork(double x);
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/* Set FD_CLOEXEC on descriptor */
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extern void UTI_FdSetCloexec(int fd);
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extern int UTI_GenerateNTPAuth(int hash_id, const unsigned char *key, int key_len,
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const unsigned char *data, int data_len, unsigned char *auth, int auth_len);
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extern int UTI_CheckNTPAuth(int hash_id, const unsigned char *key, int key_len,
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const unsigned char *data, int data_len, const unsigned char *auth, int auth_len);
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#if defined (INLINE_UTILITIES)
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#define INLINE_STATIC inline static
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#include "util.c"
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#else
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#define INLINE_STATIC
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#endif /* defined (INLINE_UTILITIES) */
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#endif /* GOT_UTIL_H */
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