refnumtoa.c

网络时间协议NTP 源码 版本v4.2.0b 该源码用于linux平台下

/*
 * refnumtoa - return asciized refclock addresses stored in local array space
 */
#include <stdio.h>

#include "ntp_fp.h"
#include "lib_strbuf.h"
#include "ntp_stdlib.h"

char *
refnumtoa(
	struct sockaddr_storage* num
	)
{
	register u_int32 netnum;
	register char *buf;
	register const char *rclock;

	LIB_GETBUF(buf);

	if(num->ss_family == AF_INET) {
		netnum = ntohl(((struct sockaddr_in*)num)->sin_addr.s_addr);
		rclock = clockname((int)((u_long)netnum >> 8) & 0xff);

		if (rclock != NULL)
		    (void)sprintf(buf, "%s(%lu)", rclock, (u_long)netnum & 0xff);
		else
	    	(void)sprintf(buf, "REFCLK(%lu,%lu)",
				  ((u_long)netnum >> 8) & 0xff, (u_long)netnum & 0xff);

	}
	else {
		(void)sprintf(buf, "refclock address type not implemented yet, use IPv4 refclock address.");
	}
	return buf;
}