From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 7 Jun 2014 21:26:34 +0000 (+0100)
Subject: src/: New type hook `query_send'.
X-Git-Tag: make-bug.2014-07-26~19
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git;a=commitdiff_plain;h=66ade6021bca9f024d7bcd2b3ddeedf7a1b3a90c;ds=sidebyside

src/: New type hook `query_send'.

Puts the type code in control of how to actually send the query off.  In
particular, this allows `virtual queries' which only actually spawn
child queries for interesting records, and then collate the results.

Signed-off-by: Mark Wooding <mdw@distorted.org.uk>
---

diff --git a/src/internal.h b/src/internal.h
index 552db15..5e34956 100644
--- a/src/internal.h
+++ b/src/internal.h
@@ -217,6 +217,12 @@ typedef struct typeinfo {
   /* Return the output resource-record element size; if this is null, then
    * the rrsz member can be used.
    */
+
+  void (*query_send)(adns_query qu, struct timeval now);
+  /* Send the query to nameservers, and hook it into the appropriate queue.
+   * Normal behaviour is to call adns__query_send, but this can be overridden
+   * for special effects.
+   */
 } typeinfo;
 
 adns_status adns__ckl_hostname(adns_state ads, adns_queryflags flags,
diff --git a/src/query.c b/src/query.c
index 1de9dfd..a5882f3 100644
--- a/src/query.c
+++ b/src/query.c
@@ -104,8 +104,8 @@ static void query_submit(adns_state ads, adns_query qu,
   qu->id= id;
   qu->query_dglen= qu->vb.used;
   memcpy(qu->query_dgram,qu->vb.buf,qu->vb.used);
-  
-  adns__query_send(qu,now);
+
+  typei->query_send(qu,now);
 }
 
 adns_status adns__ckl_hostname(adns_state ads, adns_queryflags flags,
diff --git a/src/types.c b/src/types.c
index 7cae881..0658615 100644
--- a/src/types.c
+++ b/src/types.c
@@ -85,6 +85,7 @@
  *    cs_*
  *    gsz_*
  *    postsort_*
+ *    qs_*
  */
 
 /*
@@ -1267,11 +1268,13 @@ static void mf_flat(adns_query qu, void *data) { }
 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...)	\
  { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_##memb,	\
      GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer,		\
-     adns__ckl_hostname, 0, adns__getrrsz_default, CDR(__VA_ARGS__) }
+     adns__ckl_hostname, 0, adns__getrrsz_default, adns__query_send,	\
+     CDR(__VA_ARGS__) }
 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,/*printer*/...)	\
  { adns_r_##code&adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), mf_flat,	\
      GLUE(cs_, CAR(__VA_ARGS__)),pa_##parser,di_##comparer,		\
-     adns__ckl_hostname, 0, adns__getrrsz_default, CDR(__VA_ARGS__) }
+     adns__ckl_hostname, 0, adns__getrrsz_default, adns__query_send,	\
+     CDR(__VA_ARGS__) }
 
 #define di_0 0