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/*
* numtoa - return asciized network numbers store in local array space
*/
#include <config.h>
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h> /* ntohl */
#endif
#include <stdio.h>
#include <ctype.h>
#include "ntp_fp.h"
#include "ntp_stdlib.h"
char *
numtoa(
u_int32 num
)
{
register u_int32 netnum;
register char *buf;
netnum = ntohl(num);
LIB_GETBUF(buf);
snprintf(buf, LIB_BUFLENGTH, "%lu.%lu.%lu.%lu",
((u_long)netnum >> 24) & 0xff,
((u_long)netnum >> 16) & 0xff,
((u_long)netnum >> 8) & 0xff,
(u_long)netnum & 0xff);
return buf;
}
/*
* Convert a refid & stratum to a string. If stratum is negative and the
* refid consists entirely of graphic chars, up to an optional
* terminating zero, display as text similar to stratum 0 & 1.
*/
const char *
refid_str(
u_int32 refid,
int stratum
)
{
char * text;
size_t tlen;
char * cp;
int printable;
/*
* ntpd can have stratum = 0 and refid 127.0.0.1 in orphan mode.
* https://bugs.ntp.org/3854. Mirror the refid logic in timer().
*/
if (0 == stratum && LOOPBACKADR_N == refid) {
return ".ORPH.";
}
printable = FALSE;
if (stratum < 2) {
text = lib_getbuf();
text[0] = '.';
memcpy(&text[1], &refid, sizeof(refid));
text[1 + sizeof(refid)] = '\0';
tlen = strlen(text);
text[tlen] = '.';
text[tlen + 1] = '\0';
/*
* Now make sure the contents are 'graphic'.
*
* This refid is expected to be up to 4 printable ASCII.
* isgraph() is similar to isprint() but excludes space.
* If any character is not graphic, replace it with a '?'.
* This will at least alert the viewer of a problem.
*/
for (cp = text + 1; '\0' != *cp; ++cp) {
if (!isgraph((int)*cp)) {
printable = FALSE;
*cp = '?';
}
}
if ( (stratum < 0 && printable)
|| stratum < 2) {
return text;
}
}
return numtoa(refid);
}
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