/* $NetBSD: networking.h,v 1.9 2020/05/25 20:47:32 christos Exp $ */
#ifndef NETWORKING_H
#define NETWORKING_H
#include <arpa/inet.h>
#include <netinet/in.h>
#include <strings.h>
#include <errno.h>
#include <config.h>
#include <netdb.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <ntp_rfc2553.h>
#include <ntp_stdlib.h>
#include <ntp_machine.h>
#include <ntp_unixtime.h>
#include <ntp_fp.h>
#include <ntp.h>
#include "crypto.h"
#include "log.h"
#include "sntp-opts.h"
#include "utilities.h"
/* FIXME To be replaced by the constants in ntp.h */
#define SERVER_UNUSEABLE -1 /* Skip server */
#define PACKET_UNUSEABLE -2 /* Discard packet and try to get a useable packet again if not tried too often */
#define SERVER_AUTH_FAIL -3 /* Authentication failed, act upon settings */
#define KOD_DEMOBILIZE -4 /* KOD packet with code DENY or RSTR, stop all communication and save KOD information */
#define KOD_RATE -5 /* KOD packet with code RATE, reduce poll intervall */
#define BROADCAST_FAILED -6
/* prototypes */
int sendpkt(SOCKET rsock, sockaddr_u *dest, struct pkt *pkt, int len);
int recvdata(SOCKET rsock, sockaddr_u *sender, void *rdata,
int rdata_len);
int recvpkt(SOCKET rsock, struct pkt *rpkt, unsigned int rsize,
struct pkt *spkt);
int process_pkt(struct pkt *rpkt, sockaddr_u *sas, int pkt_len,
int mode, struct pkt *spkt, const char *func_name);
/* Shortened peer structure. Not absolutely necessary yet */
struct speer {
struct speer *next;
sockaddr_u srcadr;
u_char version;
u_char hmode;
u_char hpoll;
u_char minpoll;
u_char maxpoll;
u_int flags;
u_char num_events;
u_char ttl;
u_char leap;
u_char pmode;
u_char stratum;
u_char ppoll;
u_char precision; /* should be s_char */
u_int32 refid;
l_fp reftime;
keyid_t keyid;
#ifdef AUTOKEY
#define clear_to_zero opcode
u_int32 opcode; /* last request opcode */
associd_t assoc; /* peer association ID */
u_int32 crypto; /* peer status word */
EVP_PKEY *pkey; /* public key */
const EVP_MD *digest; /* message digest algorithm */
char *subject; /* certificate subject name */
char *issuer; /* certificate issuer name */
struct cert_info *xinfo; /* issuer certificate */
keyid_t pkeyid; /* previous key ID */
keyid_t hcookie; /* host cookie */
keyid_t pcookie; /* peer cookie */
const struct pkey_info *ident_pkey; /* identity key */
BIGNUM *iffval; /* identity challenge (IFF, GQ, MV) */
const BIGNUM *grpkey; /* identity challenge key (GQ) */
struct value cookval; /* receive cookie values */
struct value recval; /* receive autokey values */
struct exten *cmmd; /* extension pointer */
u_long refresh; /* next refresh epoch */
/*
* Variables used by authenticated server
*/
keyid_t *keylist; /* session key ID list */
int keynumber; /* current key number */
struct value encrypt; /* send encrypt values */
struct value sndval; /* send autokey values */
#else /* !AUTOKEY follows */
#define clear_to_zero status
#endif /* !AUTOKEY */
l_fp rec; /* receive time stamp */
l_fp xmt; /* transmit time stamp */
l_fp dst; /* destination timestamp */
l_fp aorg; /* origin timestamp */
l_fp borg; /* alternate origin timestamp */
double offset; /* peer clock offset */
double delay; /* peer roundtrip delay */
};
#endif
