Date: Tue, 11 Sep 2001 00:42:17 +0000 From: Tony Finch <dot@dotat.at> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/30496: `host` does not work properly with top-level domains Message-ID: <E15gbd3-0000m6-00@hand.dotat.at>
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>Number: 30496
>Category: bin
>Synopsis: `host` does not work properly with top-level domains
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Sep 10 16:50:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Tony Finch
>Release: FreeBSD 4.4-RC i386
>Organization:
dotat labs
>Environment:
System: FreeBSD hand.dotat.at 4.4-RC FreeBSD 4.4-RC #4: Sat Sep 1 19:06:27 GMT 2001 fanf@hand.dotat.at:/FreeBSD/obj/FreeBSD/releng4/sys/SHARP i386
>Description:
`host` fails to make queries for top-level domains properly, because it
adds a superfluous dot to the end of the domain name when constructing
the query.
>How-To-Repeat:
fanf@hand.dotat.at:/FreeBSD/releng4/contrib/bind/bin/host
:; cat /etc/resolv.conf
search lab.dotat.at. dotat.at. .
nameserver 127.0.0.1
fanf@hand.dotat.at:~
:; /usr/obj/FreeBSD/releng4/usr.bin/host/host -d -v -t soa uk
Trying domain "lab.dotat.at."
;; res_nmkquery(QUERY, uk.lab.dotat.at., IN, SOA)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31536
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; uk.lab.dotat.at, type = SOA, class = IN
;; Querying server (# 1) address = 127.0.0.1
;; new DG socket
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 31536
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; uk.lab.dotat.at, type = SOA, class = IN
lab.dotat.at. 1H IN SOA hand.dotat.at. dot.dotat.at. (
999950951 ; serial
1D ; refresh
5M ; retry
1W ; expiry
1H ) ; minimum
rcode = 3 (Non-existent domain), ancount=0
Trying domain "dotat.at."
;; res_nmkquery(QUERY, uk.dotat.at., IN, SOA)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31537
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; uk.dotat.at, type = SOA, class = IN
;; Querying server (# 1) address = 127.0.0.1
;; new DG socket
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 31537
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; uk.dotat.at, type = SOA, class = IN
dotat.at. 1H IN SOA chiark.greenend.org.uk. dot.dotat.at. (
999303549 ; serial
1D ; refresh
5M ; retry
1W ; expiry
1H ) ; minimum
rcode = 3 (Non-existent domain), ancount=0
Trying domain "."
;; res_nmkquery(QUERY, uk.., IN, SOA)
res_nmkquery failed
No recovery, Host not found.
fanf@hand.dotat.at:~
:;
>Fix:
Index: host.c
===================================================================
RCS file: /home/ncvs/src/contrib/bind/bin/host/host.c,v
retrieving revision 1.1.1.2.2.4
diff -u -r1.1.1.2.2.4 host.c
--- host.c 2001/08/05 16:02:05 1.1.1.2.2.4
+++ host.c 2001/09/03 00:07:04
@@ -611,7 +611,8 @@
int n;
char host[NS_MAXDNAME];
- if (domain == NULL)
+ if (domain == NULL ||
+ domain[0] == '.' && domain[1] == '\0')
sprintf(host, "%.*s", NS_MAXDNAME, name);
else
sprintf(host, "%.*s.%.*s",
>Release-Note:
>Audit-Trail:
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