adns_reverse_submit function for easy in-addr queries.

[adns.git] / src / query.c

diff --git a/src/query.c b/src/query.c
index b9e6d4dffb91ed7d57ceb4e87afd08e9d2d7bb29..8d9994b748a8f5ca977ad0768b17028d1a5aa58f 100644 (file)
--- a/src/query.c
+++ b/src/query.c
@@ -258,6 +258,27 @@ 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,