src/regression/dn_expand-ptr-0.c

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