[Pdns-users] TXT record with embedded tab causes thread to die.

[Ruben d'Arco]

Hi Chris,

I've tried to reproduce your issue with the latest PDNS. Here's my record:
pdnstest=> select * from records where id=20172;
  id   | domain_id |      name      | type |             content              | ttl  | prio | change_date | ordername | auth
-------+-----------+----------------+------+----------------------------------+------+------+-------------+-----------+------
 20172 |         3 | text.wtest.com | TXT  | "v=spf1 a mx ip4:127.0.0.1>?all" | 3600 |      |             |           |
(1 row)


This is the result of my dig for that record:
$ dig -p 5300 @127.0.0.2 TXT text.wtest.com +short
"v=spf1 a mx ip4:127.0.0.1>?all"

Could you provide us with some more information about your postgresql database and the output of '\d+ records' ?

Kind regards,
	Ruben





On Tue, Mar 27, 2012 at 11:09:29AM -0400, Christopher Pruden wrote:
> >> On Tue, Mar 27, 2012 at 09:43:27AM -0400, Christopher Pruden wrote:
> >>> Hi,
> >>> 
> >>> I'm working on a PowerDNS setup, with the gpgsql backend, and think I'm running into ticket #356.  I tried this with 3.0.1 initially, and now 3.1rc1 (static RPM for both).
> >>> 
> >>> Initially, data was loaded by setting PowerDNS as a slave to a bind master, and using AXFR to get everything across.  This seemed to work well, although I've found a few records that ended up in the DB that can't be retrieved.  Specifically, it seems to be TXT records with an embedded tab (the greater than sign is the tab):
> 
> I believe I've found the spot that is causing this issue.  I haven't tested this patch, as I've run into trouble getting PowerDNS to compile on Cent, but I believe the below patch (against svn) would take care of it.  I suspect there are other characters that should be handled in it as well though -- vertical tab, maybe \r, etc.
> 
> 
> Index: pdns/dnsparser.cc
> ===================================================================
> --- pdns/dnsparser.cc	(revision 2538)
> +++ pdns/dnsparser.cc	(working copy)
> @@ -393,6 +393,9 @@
>      if(*i=='\n') {  // XXX FIXME this should do a way better job!
>        ret += "\\010";
>      }
> +    else if(*i=='\t') {
> +      ret += "\\009";
> +    }
>      else if(*i=='"' || *i=='\\'){
>        ret += '\\';
>        ret += *i;
> 
> 
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