Check zones with underscores in host names (A Records)

[Gregory Hicks]

> Subject: Check zones with underscores in host names (A Records)
> Date: Tue, 12 Feb 2008 02:57:13 -0800
> From: "Jack Tavares" <j.tavares at f5.com>
> To: <bind-users at isc.org>
> 
> Hello -
>  
> I use named-checkzone to check for zone validity.
>  
> However, named-checkzone will complain if there is an "_" in the 
domain label of an A Record.
>  
> I need to allow for underscores in A records, but I still want to 
check for other errors.
>  
> It seems to me that the only way to do that would be to parse the 
error/warning strings
> to separate errors that I want to ignore (underscores) and catch 
errors that I care about.
>  
> Is there any other way to do this?

Raplace all "_" with "-", run named-checkzone, then replace all "-"
with "_"...?  Underscore is NOT a legal char in host names according to
all RFCs that I have read...  (I may have missed one though.)

Regards,
GRegory Hicks

>  
> Example, given this zone file
> $ORIGIN .
> $TTL 500        ; 8 minutes 20 seconds
> test.com                IN SOA  d62.test.net. hostmaster.d62.test.net. 
(
>                                 8          ; serial
>                                 10800      ; refresh (3 hours)
>                                 3600       ; retry (1 hour)
>                                 604800     ; expire (1 week)
>                                 60         ; minimum (1 minute)
>                                 )
>                         NS      d62.test.net.
> $ORIGIN test.com.
> under_score             A 1.2.3.4
>                                NS unknown.test.net.
>  
> calling named-checkzone thusly
>  
> named-checkzone test.com. db.test
> returns
> db.test:14: under_score.test.com: bad owner name (check-names)
> zone test.com/IN: under_score.test.com/NS 'unknown.test.net' (out of 
zone) has no addresses records (A or AAAA)
> zone test.com/IN: loaded serial 8
> OK
> with a return code of 0
>  
> Calling with
> named-checkzone -kfail test.com. db.test
> returns
> db.test:14: under_score.test.com: bad owner name (check-names)
> zone test.com/IN: loading from master file db.test failed: bad owner 
name (check-names)
> [root at d35:Active] namedb # echo $?
> 1
> 
> It returns an error code of "1", but stops after the first error.
>  
> calling with
>  
> named-checkzone -kfail -ifull test.com. db.test
> also stops at the first error.
>  
> using
> named-checkzone -kwarn -ifull test.com . db.test
> gives
> db.test:14: under_score.test.com: bad owner name (check-names)
> zone test.com/IN: under_score.test.com/NS 'unknown.test.net' (out of 
zone) has no addresses records (A or AAAA)
> zone test.com/IN: loaded serial 8
> OK
> 
> returns an error code of 0 (ok) but logs messages.
>  
> So, to do what I want to do,
> I have to basically ignore the return code and parse the output 
messages to see if something has
> gone wrong.
>  
> Am I missing an easier way to do this?
>  
> Thanks
>  
> --
> jack
>  
>  
>  
> 
> 

---------------------------------------------------------------------
Gregory Hicks                           | Principal Systems Engineer
Cadence Design Systems                  | Direct:   408.576.3609
555 River Oaks Pkwy M/S 9B1
San Jose, CA 95134

I am perfectly capable of learning from my mistakes.  I will surely
learn a great deal today.

"A democracy is a sheep and two wolves deciding on what to have for
lunch.  Freedom is a well armed sheep contesting the results of the
decision."

"The best we can hope for concerning the people at large is that they
be properly armed." --Alexander Hamilton