external/bsd/ntp/dist/libntp/socktoa.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * socktoa - return a numeric host name from a sockaddr_storage structure
   5  */
   6
   7 #ifdef HAVE_CONFIG_H
   8 #include <config.h>
   9 #endif
  10
  11 #include <sys/types.h>
  12 #ifdef HAVE_SYS_SOCKET_H
  13 #include <sys/socket.h>
  14 #endif
  15 #ifdef HAVE_NETINET_IN_H
  16 #include <netinet/in.h>
  17 #endif
  18
  19 #include <arpa/inet.h>
  20
  21 #ifdef ISC_PLATFORM_NEEDNTOP
  22 #include <isc/net.h>
  23 #endif
  24
  25 #include <stdio.h>
  26
  27 #include "ntp_fp.h"
  28 #include "lib_strbuf.h"
  29 #include "ntp_stdlib.h"
  30 #include "ntp.h"
  31
  32 char *
  33 socktoa(
  34         sockaddr_u *sock
  35         )
  36 {
  37         register char *buffer;
  38
  39         LIB_GETBUF(buffer);
  40
  41         if (NULL == sock)
  42                 strncpy(buffer, "(null)", LIB_BUFLENGTH);
  43         else {
  44                 switch(AF(sock)) {
  45
  46                 case AF_INET:
  47                 case AF_UNSPEC:
  48                         inet_ntop(AF_INET, PSOCK_ADDR4(sock), buffer,
  49                                   LIB_BUFLENGTH);
  50                         break;
  51
  52                 case AF_INET6:
  53                         inet_ntop(AF_INET6, PSOCK_ADDR6(sock), buffer,
  54                                   LIB_BUFLENGTH);
  55                         break;
  56
  57                 default:
  58                         snprintf(buffer, LIB_BUFLENGTH,
  59                                  "(socktoa unknown family %d)",
  60                                  AF(sock));
  61                 }
  62         }
  63         return buffer;
  64 }