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/*
* NTP defines required to do a monlist query.
*
* Extracted from:
*
* ntp_request.h
* ntp_types.h
* ntp_fp.h
*
* Modified fom xntpd source by Larry Schwimmer
* Copyright 1992-1997 University of Delaware
* Copyright 1997, 2008, 2012
* The Board of Trustees of the Leland Stanford Junior University
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appears in all copies and that
* both the copyright notice and this permission notice appear in supporting
* documentation, and that the name University of Delaware not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The University of Delaware makes no
* representations about the suitability this software for any purpose. It is
* provided "as is" without express or implied warranty.
*/
#ifndef MODULES_MONLIST_H
#define MODULES_MONLIST_H 1
#include <portable/macros.h>
typedef struct {
union {
uint32_t Xl_ui;
int Xl_i;
} Ul_i;
union {
uint32_t Xl_uf;
int Xl_f;
} Ul_f;
} l_fp;
/*
* A request packet. These are almost a fixed length. */
struct req_pkt {
uint8_t rm_vn_mode; /* Response, more, version, mode */
uint8_t auth_seq; /* Key, sequence number */
uint8_t implementation; /* Implementation number */
uint8_t request; /* Request number */
uint16_t err_nitems; /* Error code/number of data items */
uint16_t mbz_itemsize; /* Item size */
char data[32]; /* Data area */
l_fp tstamp; /* Time stamp, for authentication */
uint32_t keyid; /* Encryption key */
};
/* Input packet lengths. One with the mac, one without. */
#define REQ_LEN_MAC (sizeof(struct req_pkt))
#define REQ_LEN_NOMAC REQ_LEN_MAC
/*
* A response packet. The length here is variable, this is a maximally sized
* one. Note that this implementation doesn't authenticate responses.
*/
#define RESP_HEADER_SIZE (8)
#define RESP_DATA_SIZE (500)
struct resp_pkt {
uint8_t rm_vn_mode; /* Response, more, version, mode */
uint8_t auth_seq; /* Key, sequence number */
uint8_t implementation; /* Implementation number */
uint8_t request; /* Request number */
uint16_t err_nitems; /* Error code/number of data items */
uint16_t mbz_itemsize; /* Item size */
char data[RESP_DATA_SIZE]; /* Data area */
};
/* Information error codes. */
#define INFO_OKAY 0
#define INFO_ERR_IMPL 1 /* Incompatable implementation */
#define INFO_ERR_REQ 2 /* Unknown request code */
#define INFO_ERR_FMT 3 /* Format error */
#define INFO_ERR_NODATA 4 /* No data for this request */
#define INFO_ERR_AUTH 7 /* Authentication failure */
/* Bit setting macros for multifield items. */
#define RESP_BIT 0x80
#define MORE_BIT 0x40
#define ISRESPONSE(rm_vn_mode) (((rm_vn_mode) & RESP_BIT) != 0)
#define ISMORE(rm_vn_mode) (((rm_vn_mode) & MORE_BIT) != 0)
#define INFO_VERSION(rm_vn_mode) ((uint8_t)(((rm_vn_mode) >> 3) & 0x7))
#define INFO_MODE(rm_vn_mode) ((rm_vn_mode) & 0x7)
#define RM_VN_MODE(resp, more) \
((uint8_t)(((resp) ? RESP_BIT : 0) | ((more) ? MORE_BIT : 0) \
| ((NTP_VERSION) << 3) | (MODE_PRIVATE)))
#define INFO_IS_AUTH(auth_seq) (((auth_seq) & 0x80) != 0)
#define INFO_SEQ(auth_seq) ((auth_seq) & 0x7f)
#define AUTH_SEQ(auth, seq) \
((uint8_t)((((auth) != 0) ? 0x80 : 0) | ((seq) & 0x7f)))
#define INFO_ERR(err_nitems) ((uint16_t)((ntohs(err_nitems) >> 12) & 0xf))
#define INFO_NITEMS(err_nitems) ((uint16_t)(ntohs(err_nitems) & 0xfff))
#define ERR_NITEMS(err, nitems) \
(htons((uint16_t)((((uint16_t)(err) << 12) & 0xf000) \
| ((uint16_t)(nitems) & 0xfff))))
#define INFO_MBZ(mbz_itemsize) ((ntohs(mbz_itemsize) >> 12) & 0xf)
#define INFO_ITEMSIZE(mbz_itemsize) (ntohs(mbz_itemsize) & 0xfff)
#define MBZ_ITEMSIZE(itemsize) (htons((uint16_t)(itemsize)))
/* XNTPD request codes. */
#define REQ_MON_GETLIST 20 /* Return data collected by monitor */
/* Other defines. */
#define IMPL_XNTPD 2
#define NTP_VERSION ((uint8_t) 3) /* Current version number */
#define MODE_PRIVATE 7 /* Implementation defined function */
BEGIN_DECLS
extern int monlist(int sd, int timeout);
END_DECLS
#endif /* !MODULES_MONLIST_H */
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