openwrt/package/network/services/dnsmasq/patches/0006-Fix-spurious-AD-flags-in-some-DNS-replies-from-local.patch

From 6f7812d97bc8f87004c0a5069c6c94c64af78106 Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Tue, 23 Oct 2018 23:54:44 +0100
Subject: [PATCH 06/32] Fix spurious AD flags in some DNS replies from local
 config.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
---
 src/rfc1035.c | 42 ++++++++++++++++++++++++------------------
 1 file changed, 24 insertions(+), 18 deletions(-)

--- a/src/rfc1035.c
+++ b/src/rfc1035.c
@@ -1330,7 +1330,7 @@ size_t answer_request(struct dns_header
 	    {
 	      if (t->class == qclass && hostname_isequal(name, t->name))
 		{
-		  ans = 1;
+		  ans = 1, sec_data = 0;
 		  if (!dryrun)
 		    {
 		      unsigned long ttl = daemon->local_ttl;
@@ -1370,7 +1370,7 @@ size_t answer_request(struct dns_header
 		       addr.addr.rcode.rcode = NOTIMP;
 		       log_query(F_CONFIG | F_RCODE, name, &addr, NULL);
 		    }
-		  ans = 1;
+		  ans = 1, sec_data = 0;
 		}
 	    }
 	}
@@ -1725,7 +1725,7 @@ size_t answer_request(struct dns_header
 		}
 	      else if (is_name_synthetic(flag, name, &addr))
 		{
-		  ans = 1;
+		  ans = 1, sec_data = 0;
 		  if (!dryrun)
 		    {
 		      log_query(F_FORWARD | F_CONFIG | flag, name, &addr, NULL);
@@ -1763,25 +1763,27 @@ size_t answer_request(struct dns_header
 	      for (rec = daemon->mxnames; rec; rec = rec->next)
 		if (!rec->issrv && hostname_isequal(name, rec->name))
 		  {
-		  ans = found = 1;
-		  if (!dryrun)
-		    {
-		      int offset;
-		      log_query(F_CONFIG | F_RRNAME, name, NULL, "<MX>");
-		      if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->local_ttl,
-					      &offset, T_MX, C_IN, "sd", rec->weight, rec->target))
-			{
-			  anscount++;
-			  if (rec->target)
-			    rec->offset = offset;
-			}
-		    }
+		    ans = found = 1;
+		    sec_data = 0;
+		    if (!dryrun)
+		      {
+			int offset;
+			log_query(F_CONFIG | F_RRNAME, name, NULL, "<MX>");
+			if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->local_ttl,
+						&offset, T_MX, C_IN, "sd", rec->weight, rec->target))
+			  {
+			    anscount++;
+			    if (rec->target)
+			      rec->offset = offset;
+			  }
+		      }
 		  }
 	      
 	      if (!found && (option_bool(OPT_SELFMX) || option_bool(OPT_LOCALMX)) && 
 		  cache_find_by_name(NULL, name, now, F_HOSTS | F_DHCP | F_NO_RR))
 		{ 
 		  ans = 1;
+		  sec_data = 0;
 		  if (!dryrun)
 		    {
 		      log_query(F_CONFIG | F_RRNAME, name, NULL, "<MX>");
@@ -1802,6 +1804,7 @@ size_t answer_request(struct dns_header
 		if (rec->issrv && hostname_isequal(name, rec->name))
 		  {
 		    found = ans = 1;
+		    sec_data = 0;
 		    if (!dryrun)
 		      {
 			int offset;
@@ -1838,6 +1841,7 @@ size_t answer_request(struct dns_header
 	      if (!found && option_bool(OPT_FILTER) && (qtype == T_SRV || (qtype == T_ANY && strchr(name, '_'))))
 		{
 		  ans = 1;
+		  sec_data = 0;
 		  if (!dryrun)
 		    log_query(F_CONFIG | F_NEG, name, NULL, NULL);
 		}
@@ -1850,6 +1854,7 @@ size_t answer_request(struct dns_header
 		if (hostname_isequal(name, na->name))
 		  {
 		    ans = 1;
+		    sec_data = 0;
 		    if (!dryrun)
 		      {
 			log_query(F_CONFIG | F_RRNAME, name, NULL, "<NAPTR>");
@@ -1862,11 +1867,12 @@ size_t answer_request(struct dns_header
 	    }
 	  
 	  if (qtype == T_MAILB)
-	    ans = 1, nxdomain = 1;
+	    ans = 1, nxdomain = 1, sec_data = 0;
 
 	  if (qtype == T_SOA && option_bool(OPT_FILTER))
 	    {
-	      ans = 1; 
+	      ans = 1;
+	      sec_data = 0;
 	      if (!dryrun)
 		log_query(F_CONFIG | F_NEG, name, &addr, NULL);
 	    }