dnsname.c

   1 #include "buffer.h"
   2 #include "exit.h"
   3 #include "strerr.h"
   4 #include "ip4.h"
   5 #include "dns.h"
   6
   7 #define FATAL "dnsname: fatal: "
   8
   9 static char seed[128];
  10
  11 char ip[4];
  12 static stralloc out;
  13
  14 int main(int argc,char **argv)
  15 {
  16   dns_random_init(seed);
  17
  18   if (*argv) ++argv;
  19
  20   while (*argv) {
  21     if (!ip4_scan(*argv,ip))
  22       strerr_die3x(111,FATAL,"unable to parse IP address ",*argv);
  23     if (dns_name4(&out,ip) == -1)
  24       strerr_die4sys(111,FATAL,"unable to find host name for ",*argv,": ");
  25
  26     buffer_put(buffer_1,out.s,out.len);
  27     buffer_puts(buffer_1,"\n");
  28
  29     ++argv;
  30   }
  31
  32   buffer_flush(buffer_1);
  33   _exit(0);
  34 }