X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git;a=blobdiff_plain;f=src%2Fquery.c;h=5e345ae72f5f4101e356c367be6489509b8b26f0;hp=172ff0607b150e81950276272fb9e22d8ca45671;hb=8af5175d702f5d198d731adf760edf3bdcb60817;hpb=28de64428cfdb63ad07acfcfc254907b608d5137

diff --git a/src/query.c b/src/query.c
index 172ff06..5e345ae 100644
--- a/src/query.c
+++ b/src/query.c
@@ -5,7 +5,12 @@
  * - query submission and cancellation (user-visible and internal)
  */
 /*
- *  This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
+ *  This file is
+ *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *
+ *  It is part of adns, which is
+ *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
+ *    Copyright (C) 1999 Tony Finch <dot@dotat.at>
  *  
  *  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
@@ -63,9 +68,9 @@ static adns_query query_alloc(adns_state ads, const typeinfo *typei,
 
   qu->id= 0;
   qu->flags= flags;
-  qu->udpretries= 0;
+  qu->retries= 0;
   qu->udpnextserver= 0;
-  qu->udpsent= qu->tcpfailed= 0;
+  qu->udpsent= 0;
   timerclear(&qu->timeout);
   qu->expires= now.tv_sec + MAXTTLBELIEVE;
 
@@ -86,7 +91,7 @@ static void query_submit(adns_state ads, adns_query qu,
 			 const typeinfo *typei, vbuf *qumsg_vb, int id,
 			 adns_queryflags flags, struct timeval now) {
   /* Fills in the query message in for a previously-allocated query,
-   * and submits it.  Cannot fail.
+   * and submits it.  Cannot fail.  Takes over the memory for qumsg_vb.
    */
 
   qu->vb= *qumsg_vb;
@@ -100,7 +105,6 @@ static void query_submit(adns_state ads, adns_query qu,
   memcpy(qu->query_dgram,qu->vb.buf,qu->vb.used);
   
   adns__query_send(qu,now);
-  adns__autosys(ads,now);
 }
 
 adns_status adns__internal_submit(adns_state ads, adns_query *query_r,
@@ -123,16 +127,24 @@ static void query_simple(adns_state ads, adns_query qu,
 			 const char *owner, int ol,
 			 const typeinfo *typei, adns_queryflags flags,
 			 struct timeval now) {
-  vbuf vb;
+  vbuf vb_new;
   int id;
   adns_status stat;
 
-  adns__vbuf_init(&vb);
-  
-  stat= adns__mkquery(ads,&vb,&id, owner,ol, typei,flags);
-  if (stat) { adns__query_fail(qu,stat); return; }
+  stat= adns__mkquery(ads,&qu->vb,&id, owner,ol, typei,flags);
+  if (stat) {
+    if (stat == adns_s_querydomaintoolong && (flags & adns_qf_search)) {
+      adns__search_next(ads,qu,now);
+      return;
+    } else {
+      adns__query_fail(qu,stat);
+      return;
+    }
+  }
 
-  query_submit(ads,qu, typei,&vb,id, flags,now);
+  vb_new= qu->vb;
+  adns__vbuf_init(&qu->vb);
+  query_submit(ads,qu, typei,&vb_new,id, flags,now);
 }
 
 void adns__search_next(adns_state ads, adns_query qu, struct timeval now) {
@@ -221,6 +233,7 @@ int adns_submit(adns_state ads,
 				 
   if (ol>=1 && owner[ol-1]=='.' && (ol<2 || owner[ol-2]!='\\')) {
     flags &= ~adns_qf_search;
+    qu->flags= flags;
     ol--;
   }
 
@@ -238,6 +251,7 @@ int adns_submit(adns_state ads,
     }
     query_simple(ads,qu, owner,ol, typei,flags, now);
   }
+  adns__autosys(ads,now);
   adns__consistency(ads,qu,cc_entex);
   return 0;
 
@@ -253,6 +267,27 @@ int adns_submit(adns_state ads,
   return r;
 }
 
+int adns_submit_reverse(adns_state ads,
+			const struct sockaddr *addr,
+			adns_rrtype type,
+			adns_queryflags flags,
+			void *context,
+			adns_query *query_r) {
+  const unsigned char *iaddr;
+  char buf[30];
+
+  if (type != adns_r_ptr && type != adns_r_ptr_raw) return EINVAL;
+  flags &= ~adns_qf_search;
+
+  if (addr->sa_family != AF_INET) return ENOSYS;
+  iaddr= (const unsigned char*) &(((const struct sockaddr_in*)addr) -> sin_addr);
+
+  sprintf(buf, "%d.%d.%d.%d.in-addr.arpa",
+	  iaddr[3], iaddr[2], iaddr[1], iaddr[0]);
+
+  return adns_submit(ads,buf,type,flags,context,query_r);
+}
+
 int adns_synchronous(adns_state ads,
 		     const char *owner,
 		     adns_rrtype type,
@@ -346,7 +381,6 @@ static void cancel_children(adns_query qu) {
     ncqu= cqu->siblings.next;
     adns_cancel(cqu);
   }
-  LIST_INIT(qu->children);
 }
 
 void adns__reset_preserved(adns_query qu) {
@@ -362,7 +396,10 @@ static void free_query_allocs(adns_query qu) {
 
   cancel_children(qu);
   for (an= qu->allocations.head; an; an= ann) { ann= an->next; free(an); }
+  LIST_INIT(qu->allocations);
   adns__vbuf_free(&qu->vb);
+  adns__vbuf_free(&qu->search_vb);
+  free(qu->query_dgram);
 }
 
 void adns_cancel(adns_query qu) {
@@ -370,11 +407,15 @@ void adns_cancel(adns_query qu) {
 
   ads= qu->ads;
   adns__consistency(ads,qu,cc_entex);
+  if (qu->parent) LIST_UNLINK_PART(qu->parent->children,qu,siblings.);
   switch (qu->state) {
-  case query_tosend: case query_tcpwait: case query_tcpsent:
-    LIST_UNLINK(ads->timew,qu);
+  case query_tosend:
+    LIST_UNLINK(ads->udpw,qu);
+    break;
+  case query_tcpw:
+    LIST_UNLINK(ads->tcpw,qu);
     break;
-  case query_child:
+  case query_childw:
     LIST_UNLINK(ads->childw,qu);
     break;
   case query_done:
@@ -469,12 +510,13 @@ void adns__query_done(adns_query qu) {
     LIST_UNLINK(qu->ads->childw,parent);
     qu->ctx.callback(parent,qu);
     free_query_allocs(qu);
+    free(qu->answer);
     free(qu);
   } else {
     makefinal_query(qu);
     LIST_LINK_TAIL(qu->ads->output,qu);
+    qu->state= query_done;
   }
-  qu->state= query_done;
 }
 
 void adns__query_fail(adns_query qu, adns_status stat) {