libntp/numtoa.c

   1 /*
   2  * numtoa - return asciized network numbers store in local array space
   3  */
   4 #include "config.h"
   5
   6 #include <sys/types.h>
   7 #include <netinet/in.h>         /* ntohl */
   8
   9 #include <stdio.h>
  10
  11 #include "ntp_fp.h"
  12 #include "lib_strbuf.h"
  13 #include "ntp_stdlib.h"
  14
  15 /* Convert a refid & stratum to a string
  16  * Only used by record_raw_stats
  17  */
  18 const char *
  19 refid_str(
  20         uint32_t        refid,
  21         int     stratum
  22         )
  23 {
  24         char *  text;
  25         size_t  tlen;
  26
  27         if (stratum > 1) {
  28                 struct in_addr in4;
  29                 in4.s_addr = refid;
  30                 return inet_ntoa(in4);
  31         }
  32
  33         text = lib_getbuf();
  34         memcpy(&text[0], &refid, sizeof(refid));
  35         text[1 + sizeof(refid)] = '\0';
  36         // Chop off trailing spaces. Facebook was sending "FB  "
  37         for (int i=sizeof(refid)-1; i>0; i--) {
  38           if (text[i] != ' ') break;
  39           text[i] = '\0';
  40         }
  41         tlen = strlen(text);
  42         if (0 == tlen) {
  43           strlcat(text, "?", LIB_BUFLENGTH);
  44         }
  45
  46         return text;
  47 }
  48