src/regression/dn_expand-ptr-0.c

   1 // dn_expand should handle offset pointer to 0 byte
   2 #define _DEFAULT_SOURCE 1
   3 #define _BSD_SOURCE 1
   4 #include <resolv.h>
   5 #include <string.h>
   6 #include "test.h"
   7
   8 int main(void)
   9 {
  10         unsigned char packet[] = {2,'p','q',0xc0,5,0};
  11         char name[] = "XXXX";
  12         int r;
  13
  14         /* non-empty name with pointer to 0 */
  15         r = dn_expand(packet, packet+6, packet, name, 3);
  16         if (r!=5)
  17                 t_error("dn_expand(\"\\2pq\\xc0\\5\", name, 3) returned %d, wanted 5\n", r);
  18         if (strcmp(name, "pq"))
  19                 t_error("dn_expand(\"\\2pq\\xc0\\5\", name, 3) failed: got \"%s\" name, wanted \"pq\"\n", name);
  20
  21         /* empty name with pointer to 0 */
  22         memcpy(packet, "\xc0\2", 3);
  23         memcpy(name, "XXXX", 5);
  24         r = dn_expand(packet, packet+3, packet, name, 1);
  25         if (r!=2)
  26                 t_error("dn_expand(\"\\xc0\\2\", name, 1) returned %d, wanted 2\n", r);
  27         if (name[0])
  28                 t_error("dn_expand(\"\\xc0\\2\", name, 1) failed: got \"%s\" name, wanted \"\"\n", name);
  29
  30         return t_status;
  31 }