src/regression/dn_expand-empty.c

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