size limit on RDATA in nsupdate

[Carsten Strotmann]

Hi,

I'm trying to build an automated update system for OPENPGPKEY records
with BIND 9 9.9.6-P2 and "nsupate".

I've verified the TSIG keys, I can add and remove TXT records with the
key under the domain name.

Adding a 6K PGP key as OPENPGPKEY does fail with 

21-Feb-2015 13:24:19.714 dns_rdata_fromtext: buffer-0x7f04662e14f0:1:
near eof: unexpected end of input
invalid rdata format: unexpected end of input

Below is the debug output from nsupdate:

setup_system()
Creating key...
namefromtext
keycreate
reset_system()
user_interaction()
do_next_command()
do_next_command()
do_next_command()
update_addordelete()
do_next_command()
start_update()
recvsoa()
About to create rcvmsg
show_message()
Reply from SOA query:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id:  44542
;; flags: qr aa; QUESTION: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; QUESTION SECTION:
;f437b55d4fb40f93bbfa04802a6a2bcf8b69d5ee93d1b53259e6e4fc._openpgpkey.sys4.de. IN
SOA

;; AUTHORITY SECTION:
_openpgpkey.sys4.de.    900     IN      SOA
danens1.sys4.de. hostmaster.sys4.de. 1000003 7200 3600 3542400 900

;; TSIG PSEUDOSECTION:
f437b55d4fb40f93bbfa04802a6a2bcf8b69d5ee93d1b53259e6e4fc._openpgpkey.sys4.de. 0
ANY TSIG hmac-sha256. 1424521459 300 32
1e+FXn+fpeSOtiwXfC4KsDQwyGYO8q5VtS95aqhwJGw= 44542 NOERROR 0 

Found zone name: _openpgpkey.sys4.de
The master is: danens1.sys4.de
send_update()
Sending update to 5.45.109.212#53
show_message()
Outgoing update query:
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id:  10928
;; flags:; ZONE: 1, PREREQ: 0, UPDATE: 1, ADDITIONAL: 1
;; UPDATE SECTION:
f437b55d4fb40f93bbfa04802a6a2bcf8b69d5ee93d1b53259e6e4fc._openpgpkey.sys4.de. 0
ANY ANY

;; TSIG PSEUDOSECTION:
f437b55d4fb40f93bbfa04802a6a2bcf8b69d5ee93d1b53259e6e4fc._openpgpkey.sys4.de. 0
ANY TSIG hmac-sha256. 1424521459 300 32
BoYO8mOklQiZXgOvcM0zGpw+wzuhVQj0Qx1yOBvCu3s= 10928 NOERROR 0 

Out of recvsoa
update_completed()
tsig verification successful
show_message()

Reply from update query:
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id:  10928
;; flags: qr; ZONE: 1, PREREQ: 0, UPDATE: 0, ADDITIONAL: 1
;; ZONE SECTION:
;_openpgpkey.sys4.de.           IN      SOA

;; TSIG PSEUDOSECTION:
f437b55d4fb40f93bbfa04802a6a2bcf8b69d5ee93d1b53259e6e4fc._openpgpkey.sys4.de. 0
ANY TSIG hmac-sha256. 1424521459 300 32
LAa1ANz/k/B+TwEfMSjw2A+OMPxQQgHZRuvM6uY8WMY= 10928 NOERROR 0 

done_update()
reset_system()
user_interaction()
do_next_command()
update_addordelete()
21-Feb-2015 13:24:19.714 dns_rdata_fromtext: buffer-0x7f04662e14f0:1:
near eof: unexpected end of input
invalid rdata format: unexpected end of input
syntax error

Is there an error in the "generic RR" syntax (generated by
hash-slinger)?
 
Might this be an buffer issue?


-- 
Carsten Strotmann
Email: cas at strotmann.de
Blog: strotmann.de