src/setup.c, src/transmit.c: New function finds udpsocket by AF.

[adns] / src / transmit.c

diff --git a/src/transmit.c b/src/transmit.c
index 3b148227ef48f87a6cc57c3fbe28155fb6fe0aa9..63e222c23356784655a7b805ce02371b79554b8d 100644 (file)
--- a/src/transmit.c
+++ b/src/transmit.c
@@ -4,12 +4,11 @@
  * - send queries
  */
 /*
- *  This file is
- *    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
- *
- *  It is part of adns, which is
- *    Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
- *    Copyright (C) 1999-2000 Tony Finch <dot@dotat.at>
+ *  This file is part of adns, which is
+ *    Copyright (C) 1997-2000,2003,2006  Ian Jackson
+ *    Copyright (C) 1999-2000,2003,2006  Tony Finch
+ *    Copyright (C) 1991 Massachusetts Institute of Technology
+ *  (See the file INSTALL for full details.)
  *  
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -67,7 +66,7 @@ static adns_status mkquery_footer(vbuf *vb, adns_rrtype type) {
   byte *rqp;
 
   MKQUERY_START(vb);
-  MKQUERY_ADDW(type & adns__rrt_typemask); /* QTYPE */
+  MKQUERY_ADDW(type & adns_rrt_typemask); /* QTYPE */
   MKQUERY_ADDW(DNS_CLASS_IN); /* QCLASS=IN */
   MKQUERY_STOP(vb);
   assert(vb->used <= vb->avail);
@@ -77,9 +76,11 @@ static adns_status mkquery_footer(vbuf *vb, adns_rrtype type) {
 
 adns_status adns__mkquery(adns_state ads, vbuf *vb, int *id_r,
                          const char *owner, int ol,
-                         const typeinfo *typei, adns_queryflags flags) {
-  int ll, c, nbytes;
-  byte label[255], *rqp;
+                         const typeinfo *typei, adns_rrtype type,
+                         adns_queryflags flags) {
+  int labelnum, ll, c, nbytes;
+  byte label[255];
+  byte *rqp;
   const char *p, *pe;
   adns_status st;
 
@@ -89,14 +90,18 @@ adns_status adns__mkquery(adns_state ads, vbuf *vb, int *id_r,
 
   p= owner; pe= owner+ol;
   nbytes= 0;
+  labelnum= 0;
   while (p!=pe) {
+
     ll= 0;
     while (p!=pe && (c= *p++)!='.') {
       if (c=='\\') {
-       if (!(flags & adns_qf_quoteok_query)) return adns_s_querydomaininvalid;
        if (ctype_digit(p[0])) {
+         if (p+1==pe || p+2==pe) return adns_s_querydomaininvalid;
          if (ctype_digit(p[1]) && ctype_digit(p[2])) {
-           c= (*p++ - '0')*100 + (*p++ - '0')*10 + (*p++ - '0');
+           c= (*p++ - '0')*100;
+           c += (*p++ - '0')*10;
+           c += (*p++ - '0');
            if (c >= 256) return adns_s_querydomaininvalid;
          } else {
            return adns_s_querydomaininvalid;
@@ -105,18 +110,10 @@ adns_status adns__mkquery(adns_state ads, vbuf *vb, int *id_r,
          return adns_s_querydomaininvalid;
        }
       }
-      if (!(flags & adns_qf_quoteok_query)) {
-       if (c == '-') {
-         if (!ll) return adns_s_querydomaininvalid;
-       } else if (!ctype_alpha(c) && !ctype_digit(c)) {
-         return adns_s_querydomaininvalid;
-       }
-      }
-      if (ll == sizeof(label)) return adns_s_querydomaininvalid;
+      if (ll >= DNS_MAXLABEL) return adns_s_querydomaintoolong;
       label[ll++]= c;
     }
     if (!ll) return adns_s_querydomaininvalid;
-    if (ll > DNS_MAXLABEL) return adns_s_querydomaintoolong;
     nbytes+= ll+1;
     if (nbytes >= DNS_MAXDOMAIN) return adns_s_querydomaintoolong;
     MKQUERY_ADDB(ll);
@@ -126,7 +123,7 @@ adns_status adns__mkquery(adns_state ads, vbuf *vb, int *id_r,
 
   MKQUERY_STOP(vb);
   
-  st= mkquery_footer(vb,typei->type);
+  st= mkquery_footer(vb,type);
   
   return adns_s_ok;
 }
@@ -225,10 +222,18 @@ static void query_usetcp(adns_query qu, struct timeval now) {
   adns__tcp_tryconnect(qu->ads,now);
 }
 
+struct udpsocket *adns__udpsocket_by_af(adns_state ads, int af) {
+  int i;
+  for (i=0; i<ads->nudp; i++)
+    if (ads->udpsocket[i].af == af) return &ads->udpsocket[i];
+  return 0;
+}
+
 void adns__query_send(adns_query qu, struct timeval now) {
-  struct sockaddr_in servaddr;
-  int serv, r;
+  int serv, r, i;
   adns_state ads;
+  struct udpsocket *udp;
+  adns_rr_addr *addr;
 
   assert(qu->state == query_tosend);
   if ((qu->flags & adns_qf_usevc) || (qu->query_dglen > DNS_MAXUDP)) {
@@ -241,16 +246,14 @@ void adns__query_send(adns_query qu, struct timeval now) {
     return;
   }
 
-  serv= qu->udpnextserver;
-  memset(&servaddr,0,sizeof(servaddr));
-
   ads= qu->ads;
-  servaddr.sin_family= AF_INET;
-  servaddr.sin_addr= ads->servers[serv].addr;
-  servaddr.sin_port= htons(DNS_PORT);
+  serv= qu->udpnextserver;
+  addr= &ads->servers[serv];
+  udp= adns__udpsocket_by_af(ads, addr->addr.sa.sa_family);
+  assert(udp);
   
-  r= sendto(ads->udpsocket,qu->query_dgram,qu->query_dglen,0,
-           (const struct sockaddr*)&servaddr,sizeof(servaddr));
+  r= sendto(udp->fd,qu->query_dgram,qu->query_dglen,0,
+           &addr->addr.sa,addr->len);
   if (r<0 && errno == EMSGSIZE) {
     qu->retries= 0;
     query_usetcp(qu,now);