X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fquery.c;h=c32acbacf2cec16303c9528d7035bbfbed451478;hb=60b40c591fd6136f91f7119383c34524279b7f1b;hp=d09702e3702f555d8fc1c85b1c8a129d911ce55a;hpb=ae8cc9775a6eb23901a89a2604f73525b0553db8;p=adns.git

diff --git a/src/query.c b/src/query.c
index d09702e..c32acba 100644
--- a/src/query.c
+++ b/src/query.c
@@ -83,7 +83,7 @@ static adns_query query_alloc(adns_state ads,
   qu->answer->expires= -1;
   qu->answer->nrrs= 0;
   qu->answer->rrs.untyped= 0;
-  qu->answer->rrsz= typei->rrsz;
+  qu->answer->rrsz= typei->getrrsz(typei,type);
 
   return qu;
 }
@@ -108,21 +108,67 @@ static void query_submit(adns_state ads, adns_query qu,
   adns__query_send(qu,now);
 }
 
+adns_status adns__ckl_hostname(adns_state ads, adns_queryflags flags,
+			       union checklabel_state *cls,
+			       qcontext *ctx, int labnum,
+			       const char *label, int lablen)
+{
+  int i, c;
+
+  if (flags & adns_qf_quoteok_query) return adns_s_ok;
+  for (i=0; i<lablen; i++) {
+    c= label[i];
+    if (c == '-') {
+      if (!i) return adns_s_querydomaininvalid;
+    } else if (!ctype_alpha(c) && !ctype_digit(c)) {
+      return adns_s_querydomaininvalid;
+    }
+  }
+  return adns_s_ok;
+}
+
+static adns_status check_domain_name(adns_state ads, adns_queryflags flags,
+				     qcontext *ctx, const typeinfo *typei,
+				     const byte *dgram, int dglen)
+{
+  findlabel_state fls;
+  adns_status err;
+  int labnum= 0, labstart, lablen;
+  union checklabel_state cls;
+
+  adns__findlabel_start(&fls,ads, -1,0, dgram,dglen,dglen, DNS_HDRSIZE,0);
+  do {
+    err= adns__findlabel_next(&fls, &lablen,&labstart);
+    assert(!err); assert(lablen >= 0);
+    err= typei->checklabel(ads,flags, &cls,ctx,
+			   labnum++, dgram+labstart,lablen);
+    if (err) return err;
+  } while (lablen);
+  return adns_s_ok;
+}
+
 adns_status adns__internal_submit(adns_state ads, adns_query *query_r,
-				  const typeinfo *typei, vbuf *qumsg_vb,
-				  int id,
+				  const typeinfo *typei, adns_rrtype type,
+				  vbuf *qumsg_vb, int id,
 				  adns_queryflags flags, struct timeval now,
-				  const qcontext *ctx) {
+				  qcontext *ctx) {
   adns_query qu;
+  adns_status err;
 
-  qu= query_alloc(ads,typei,typei->typekey,flags,now);
-  if (!qu) { adns__vbuf_free(qumsg_vb); return adns_s_nomemory; }
+  err= check_domain_name(ads, flags,ctx,typei, qumsg_vb->buf,qumsg_vb->used);
+  if (err) goto x_err;
+  qu= query_alloc(ads,typei,type,flags,now);
+  if (!qu) { err = adns_s_nomemory; goto x_err; }
   *query_r= qu;
 
   memcpy(&qu->ctx,ctx,sizeof(qu->ctx));
   query_submit(ads,qu, typei,qumsg_vb,id,flags,now);
   
   return adns_s_ok;
+
+x_err:
+  adns__vbuf_free(qumsg_vb);
+  return err;
 }
 
 static void query_simple(adns_state ads, adns_query qu,
@@ -145,6 +191,9 @@ static void query_simple(adns_state ads, adns_query qu,
     }
   }
 
+  stat= check_domain_name(ads, flags,&qu->ctx,typei, qu->vb.buf,qu->vb.used);
+  if (stat) { adns__query_fail(qu,stat); return; }
+
   vb_new= qu->vb;
   adns__vbuf_init(&qu->vb);
   query_submit(ads,qu, typei,&vb_new,id, flags,now);
@@ -230,7 +279,8 @@ int adns_submit(adns_state ads,
   
   qu->ctx.ext= context;
   qu->ctx.callback= 0;
-  memset(&qu->ctx.info,0,sizeof(qu->ctx.info));
+  memset(&qu->ctx.pinfo,0,sizeof(qu->ctx.pinfo));
+  memset(&qu->ctx.tinfo,0,sizeof(qu->ctx.tinfo));
 
   *query_r= qu;
 
@@ -281,28 +331,15 @@ int adns_submit_reverse_any(adns_state ads,
 			    adns_queryflags flags,
 			    void *context,
 			    adns_query *query_r) {
-  const unsigned char *iaddr;
-  char *buf, *buf_free;
+  char *buf, *buf_free = 0;
   char shortbuf[100];
-  int r, lreq;
+  int r;
 
   flags &= ~adns_qf_search;
 
-  if (addr->sa_family != AF_INET) return ENOSYS;
-  iaddr= (const unsigned char*)
-    &(((const struct sockaddr_in*)addr) -> sin_addr);
-
-  lreq= strlen(zone) + 4*4 + 1;
-  if (lreq > sizeof(shortbuf)) {
-    buf= malloc(strlen(zone) + 4*4 + 1);
-    if (!buf) return errno;
-    buf_free= buf;
-  } else {
-    buf= shortbuf;
-    buf_free= 0;
-  }
-  sprintf(buf, "%d.%d.%d.%d.%s", iaddr[3], iaddr[2], iaddr[1], iaddr[0], zone);
-
+  buf = shortbuf;
+  r= adns__make_reverse_domain(addr,zone, &buf,sizeof(shortbuf),&buf_free);
+  if (r) return r;
   r= adns_submit(ads,buf,type,flags,context,query_r);
   free(buf_free);
   return r;
@@ -314,9 +351,10 @@ int adns_submit_reverse(adns_state ads,
 			adns_queryflags flags,
 			void *context,
 			adns_query *query_r) {
-  if (type != adns_r_ptr && type != adns_r_ptr_raw) return EINVAL;
-  return adns_submit_reverse_any(ads,addr,"in-addr.arpa",
-				 type,flags,context,query_r);
+  if (((type^adns_r_ptr) & adns_rrt_reprmask) &&
+      ((type^adns_r_ptr_raw) & adns_rrt_reprmask))
+    return EINVAL;
+  return adns_submit_reverse_any(ads,addr,0,type,flags,context,query_r);
 }
 
 int adns_synchronous(adns_state ads,
@@ -528,7 +566,7 @@ void adns__query_done(adns_query qu) {
   }
 
   if (ans->nrrs && qu->typei->diff_needswap) {
-    if (!adns__vbuf_ensure(&qu->vb,qu->typei->rrsz)) {
+    if (!adns__vbuf_ensure(&qu->vb,qu->answer->rrsz)) {
       adns__query_fail(qu,adns_s_nomemory);
       return;
     }
@@ -539,7 +577,8 @@ void adns__query_done(adns_query qu) {
 		qu->ads);
   }
   if (ans->nrrs && qu->typei->postsort) {
-    qu->typei->postsort(qu->ads, ans->rrs.bytes, ans->nrrs, qu->typei);
+    qu->typei->postsort(qu->ads, ans->rrs.bytes,
+			ans->nrrs,ans->rrsz, qu->typei);
   }
 
   ans->expires= qu->expires;