- Fix#501: forward-first does not recurse, when forward name is ".".

git-svn-id: file:///svn/unbound/trunk@2907 be551aaa-1e26-0410-a405-d3ace91eadb9

doc/Changelog

@@ -1,3 +1,6 @@
+10 Jun 2013: Wouter
+	- Fix#501: forward-first does not recurse, when forward name is ".".
+
 27 May 2013: Wouter
 	- Update acx_pthreads.m4 to ax_pthreads.4 (2013-03-29), and apply
 	  patch to it to not fail when -Werror is also specified, from the

iterator/iterator.c

@@ -1419,8 +1419,9 @@ can_have_last_resort(struct module_env* env, struct delegpt* dp,
 	/* do not process a last resort (the parent side) if a stub
 	 * or forward is configured, because we do not want to go 'above'
 	 * the configured servers */
-	if((stub = (struct iter_hints_stub*)name_tree_find(&env->hints->tree,
+	if(!dname_is_root(dp->name) && (stub = (struct iter_hints_stub*)
-		dp->name, dp->namelen, dp->namelabs, iq->qchase.qclass)) &&
+		name_tree_find(&env->hints->tree, dp->name, dp->namelen,
+		dp->namelabs, iq->qchase.qclass)) &&
 		/* has_parent side is turned off for stub_first, where we
 		 * are allowed to go to the parent */
 		stub->dp->has_parent_side_NS) {

testdata/iter_fwdfirstequal.rpl

@@ -0,0 +1,157 @@
+; config options
+server:
+	target-fetch-policy: "0 0 0 0 0"
+
+stub-zone:
+	name: "."
+	stub-addr: 193.0.14.129 	# K.ROOT-SERVERS.NET.
+
+forward-zone:
+	name: "."
+	forward-addr: 1.2.3.6		# failing resolver
+	forward-first: yes
+
+CONFIG_END
+
+SCENARIO_BEGIN Test forward-first directive with equal stub name configured.
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+	ADDRESS 193.0.14.129 
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+. IN NS
+SECTION ANSWER
+. IN NS	K.ROOT-SERVERS.NET.
+SECTION ADDITIONAL
+K.ROOT-SERVERS.NET.	IN	A	193.0.14.129
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode subdomain
+ADJUST copy_id copy_query
+REPLY QR NOERROR
+SECTION QUESTION
+com. IN A
+SECTION AUTHORITY
+com.	IN NS	a.gtld-servers.net.
+SECTION ADDITIONAL
+a.gtld-servers.net.	IN 	A	192.5.6.30
+ENTRY_END
+RANGE_END
+
+; a.gtld-servers.net.
+RANGE_BEGIN 0 100
+	ADDRESS 192.5.6.30
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+com. IN NS
+SECTION ANSWER
+com.	IN NS	a.gtld-servers.net.
+SECTION ADDITIONAL
+a.gtld-servers.net.	IN 	A	192.5.6.30
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode subdomain
+ADJUST copy_id copy_query
+REPLY QR NOERROR
+SECTION QUESTION
+example.com. IN A
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+RANGE_END
+
+; ns.example.com.
+RANGE_BEGIN 0 100
+	ADDRESS 1.2.3.4
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+example.com. IN NS
+SECTION ANSWER
+example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+www.example.com. IN A	10.20.30.40
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+RANGE_END
+
+; local resolver (that fails a lot)
+RANGE_BEGIN 0 100
+	ADDRESS 1.2.3.6
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR RA SERVFAIL
+SECTION QUESTION
+example.com. IN NS
+SECTION ANSWER
+;example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+;ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR RA SERVFAIL
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+;www.example.com. IN A	10.20.30.50
+SECTION AUTHORITY
+;example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+;ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+RANGE_END
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+www.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 10 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA NOERROR
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+www.example.com. IN A	10.20.30.40
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+SECTION ADDITIONAL
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+
+SCENARIO_END