examples/fdnsspf1.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "../include/firedns.h"
   4
   5 int main(int argc, char **argv) {
   6         struct firedns_txtlist *iter;
   7         char *spfrecord = NULL;
   8         firedns_state dns, *d = &dns;
   9
  10         if (argc != 2) {
  11                 fprintf(stderr,"usage: %s <hostname>\n",argv[0]);
  12                 return 2;
  13         }
  14
  15         firedns_init(d);
  16         firedns_add_servers_from_resolv_conf(d);
  17
  18         iter = firedns_resolvetxtlist(d, argv[1]);
  19
  20         if (iter == NULL)
  21                 return 1;
  22
  23         while (iter != NULL) {
  24                 if (strncmp(iter->txt,"v=spf1 ",7) == 0) {
  25                         if (spfrecord != NULL)
  26                                 return 1;
  27                         spfrecord = iter->txt;
  28                 }
  29                 iter = iter->next;
  30         }
  31
  32         if (spfrecord == NULL)
  33                 return 1;
  34
  35         printf("%s\n",spfrecord);
  36
  37         return 0;
  38 }