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.
114 lines
2.9 KiB
C
114 lines
2.9 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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Header file containing common NTP bits and pieces
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*/
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#ifndef GOT_NTP_H
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#define GOT_NTP_H
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#ifdef HAS_STDINT_H
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#include <stdint.h>
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#elif defined(HAS_INTTYPES_H)
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#include <inttypes.h>
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#endif
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#include "hash.h"
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typedef struct {
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uint32_t hi;
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uint32_t lo;
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} NTP_int64;
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typedef uint32_t NTP_int32;
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#define MAX_NTP_AUTH_DATA_LEN MAX_HASH_LENGTH
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/* Type definition for leap bits */
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typedef enum {
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LEAP_Normal = 0,
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LEAP_InsertSecond = 1,
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LEAP_DeleteSecond = 2,
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LEAP_Unsynchronised = 3
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} NTP_Leap;
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typedef enum {
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MODE_UNDEFINED = 0,
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MODE_ACTIVE = 1,
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MODE_PASSIVE = 2,
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MODE_CLIENT = 3,
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MODE_SERVER = 4,
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MODE_BROADCAST = 5
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} NTP_Mode;
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typedef struct {
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uint8_t lvm;
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uint8_t stratum;
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int8_t poll;
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int8_t precision;
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NTP_int32 root_delay;
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NTP_int32 root_dispersion;
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NTP_int32 reference_id;
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NTP_int64 reference_ts;
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NTP_int64 originate_ts;
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NTP_int64 receive_ts;
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NTP_int64 transmit_ts;
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NTP_int32 auth_keyid;
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uint8_t auth_data[MAX_NTP_AUTH_DATA_LEN];
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} NTP_Packet;
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/* We have to declare a buffer type to hold a datagram read from the
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network. Even though we won't be using them (yet?!), this must be
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large enough to hold NTP control messages. */
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/* Define the maximum number of bytes that can be read in a single
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message. (This is cribbed from ntp.h in the xntpd source code). */
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#define MAX_NTP_MESSAGE_SIZE (468+12+16+4)
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typedef union {
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NTP_Packet ntp_pkt;
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uint8_t arbitrary[MAX_NTP_MESSAGE_SIZE];
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} ReceiveBuffer;
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#define NTP_NORMAL_PACKET_SIZE offsetof(NTP_Packet, auth_keyid)
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/* ================================================== */
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inline static double
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int32_to_double(NTP_int32 x)
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{
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return (double) ntohl(x) / 65536.0;
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}
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/* ================================================== */
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inline static NTP_int32
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double_to_int32(double x)
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{
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return htonl((NTP_int32)(0.5 + 65536.0 * x));
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}
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/* ================================================== */
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#endif /* GOT_NTP_H */
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