29 Sep
2017
29 Sep
'17
1:29 a.m.
### Description
I use kazoo and postgres modules on my host. I found that many database operation
generates error like
```
19(150) exec: *** cfgtrace:request_route=[kazoo:consumer-event-presence-dialog-update]
c=[//etc/kamailio/presence-role.cfg] l=270 a=32 n=kazoo_pua_publish_presence
17(148) exec: *** cfgtrace:request_route=[kazoo:consumer-event-presence-dialog-update]
c=[//etc/kamailio/presence-role.cfg] l=271 a=27 n=pres_refresh_watchers
Entity: line 1: parser error : Start tag expected, '<' not found
\x3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e3c
^
17(148) ERROR: presence_xml [notify_body.c:551]: agregate_xmls(): while parsing xml body
message
17(148) ERROR: presence_xml [notify_body.c:156]: pres_agg_nbody(): while aggregating body
19(150) exec: *** cfgtrace:request_route=[kazoo:consumer-event-presence-dialog-update]
c=[//etc/kamailio/presence-role.cfg] l=271 a=27 n=pres_refresh_watchers
Entity: line 1: parser error : Start tag expected, '<' not found
\x3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e3c
^
19(150) ERROR: presence_xml [notify_body.c:551]: agregate_xmls(): while parsing xml body
message
19(150) ERROR: presence_xml [notify_body.c:156]: pres_agg_nbody(): while aggregating body
18(149) exec: *** cfgtrace:request_route=[kazoo:consumer-event-nodes-advertise]
c=[//etc/kamailio/nodes-role.cfg] l=66 a=63 n=assign
18(149) exec: *** cfgtrace:request_route=[kazoo:consumer-event-nodes-advertise]
c=[//etc/kamailio/nodes-role.cfg] l=74 a=16 n=if
18(149) exec: *** cfgtrace:request_route=[kazoo:consumer-event-nodes-advertise]
c=[//etc/kamailio/nodes-role.cfg] l=74 a=16 n=if
18(149) exec: *** cfgtrace:request_route=[kazoo:consumer-event-nodes-advertise]
c=[//etc/kamailio/nodes-role.cfg] l=75 a=27 n=mq_add
Entity: line 1: parser error : Start tag expected, '<' not found
\x3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e3c
^
17(148) ERROR: presence_xml [notify_body.c:551]: agregate_xmls(): while parsing xml body
message
17(148) ERROR: presence_xml [notify_body.c:156]: pres_agg_nbody(): while aggregating body
Entity: line 1: parser error : Start tag expected, '<' not found
\x3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e3c
^
19(150) ERROR: presence_xml [notify_body.c:551]: agregate_xmls(): while parsing xml body
message
19(150) ERROR: presence_xml [notify_body.c:156]: pres_agg_nbody(): while aggregating body
Entity: line 1: parser error : Start tag expected, '<' not found
\x3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e3c
^
17(148) ERROR: presence_xml [notify_body.c:551]: agregate_xmls(): while parsing xml body
message
17(148) ERROR: presence_xml [notify_body.c:156]: pres_agg_nbody(): while aggregating body
17(148) exec: *** cfgtrace:request_route=[kazoo:consumer-event-presence-dialog-update]
c=[//etc/kamailio/presence-role.cfg] l=276 a=26 n=xlog
17(148) INFO: <script>: 3O75Qw3gqR3ZNla5RfCgQLVW0-8KKbrT|log|finished processing
dialog update for sip:2496@rcsnet.ru state confirmed from sip:217.12.247.98:11000 at
1506632313/1506632313/1506632313
Entity: line 1: parser error : Start tag expected, '<' not found
\x3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e3c
^
```
After some debugging i found that kamailio wants save to database xml string like this as
BLOB object
```
<?xml version="1.0" encoding="UTF-8"?><presence
xmlns="urn:ietf:params:xml:ns:pidf"
xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model"
xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid"
xmlns:c="urn:ietf:params:xml:ns:pidf:cipid" entity="2496">
<tuple xmlns="urn:ietf:params:xml:ns:pidf"
id="t8No1hQnp65U33jS1oqFMgxbIRPq-iFP"><status><basic>open</basic></status></tuple><note
xmlns="urn:ietf:params:xml:ns:pidf">On the Phone</note><dm:person
xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model"
xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid"
id="1"><rpid:activities><rpid:on-the-phone/></rpid:activities><dm:note>On
the Phone</dm:note></dm:person></presence>
```
And later tries to read. But when this XML read reverse conversion of BLOB to string is
not take place. And late used BLOB as is. This breaks presentation logic completely.
#### Reproduction
Configure kamailio on kazoo cluster to use PostgreSQL database
On phone create subscribe to second
From second phone create new call.
#### Operating System
CentOS 7
Linux node2.docker.rcsnet.ru 3.10.0-514.16.1.el7.x86_64 #1 SMP Wed Apr 12 15:04:24 UTC
2017 x86_64 x86_64 x86_64 GNU/Linux
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