net/djbdns/patches/210-dnscache-strict-forwardonly.patch

   1 --- a/log.h
   2 +++ b/log.h
   3 @@ -25,6 +25,7 @@ extern void log_nxdomain(const char *,co
   4  extern void log_nodata(const char *,const char *,const char *,unsigned int);
   5  extern void log_servfail(const char *);
   6  extern void log_lame(const char *,const char *,const char *);
   7 +extern void log_ignore_referral(const char *,const char *,const char *);
   8
   9  extern void log_rr(const char *,const char *,const char *,const char *,unsigned int,unsigned int);
  10  extern void log_rrns(const char *,const char *,const char *,unsigned int);
  11 --- a/log.c
  12 +++ b/log.c
  13 @@ -197,6 +197,13 @@ void log_lame(const char server[4],const
  14    line();
  15  }
  16
  17 +void log_ignore_referral(const char server[4],const char * control, const char *referral)
  18 +{
  19 +  string("ignored referral "); ip(server); space();
  20 +  name(control); space(); name(referral);
  21 +  line();
  22 +}
  23 +
  24  void log_servfail(const char *dn)
  25  {
  26    const char *x = error_str(errno);
  27 --- a/query.c
  28 +++ b/query.c
  29 @@ -828,6 +828,18 @@ static int doit(struct query *z,int stat
  30
  31
  32    if (!dns_domain_suffix(d,referral)) goto DIE;
  33 +
  34 +  /* In strict "forwardonly" mode, we don't, as the manual states,
  35 +  ** contact a chain of servers according to "NS" resource records.
  36 +  ** We don't obey any referral responses, therefore.  Instead, we
  37 +  ** eliminate the server from the list and try the next one.
  38 +  */
  39 +  if (flagforwardonly) {
  40 +      log_ignore_referral(whichserver,control,referral);
  41 +      byte_zero(whichserver,4);
  42 +      goto HAVENS;
  43 +  }
  44 +
  45    control = d + dns_domain_suffixpos(d,referral);
  46    z->control[z->level] = control;
  47    byte_zero(z->servers[z->level],64);