Hello Daniel,

That good idea, I will need help with sqlops to update information properly. Make sure the query is optimal. I will still can use if(m_store("$tu")), because it maintain offline notification, but I can use something like this. For dump I will put uac.

route[OFFLINE_MESSAGE] {
if(!is_method("MESSAGE")) {
return;
}

if(isflagset(FLAG_FROM_PEER)) {
if(!lookup("location")) {
xlog("L_INFO", "User $tU domain $td offline. Trying store SMS for later delivery\n");
xlog("L_INFO", "SMS received from $fU to $tU domain [$td] --> storing using MSILO\n");
# MSILO - storing as offline message
if(m_store("$tu")) {
xlog("L_INFO", "MSILO: offline message stored\n");
# Encrypt stored offline message
crypto_aes_encrypt("$rb", "mykey", "$avp(encrypted)");
sql_pvquery("cb", "select * from silo ORDER BY id DESC LIMIT 1","$avp(id)");
sql_query_async("cb","UPDATE silo SET body = $avp(encrypted) WHERE id = $avp(id)");

if(is_request()) {
if(!sl_send_reply("202", "Accepted")) {
sl_reply_error();
}
} else {
xlog("L_INFO", "MSILO: offline message NOT stored\n");
#if(!sl_send_reply("503", "Service Unavailable")) {
# sl_reply_error();
#}
}
}
t_on_failure("SMS_FAIL_ROUTE");
exit;
}
}
}

Slava.

From: "Daniel-Constantin Mierla" <miconda@gmail.com>
To: "sr-users" <sr-users@lists.sip-router.org>
Sent: Thursday, 24 November, 2016 06:45:48
Subject: Re: [SR-Users] msilo

I expect the encryption/decryption can be done with some triggers in mysql server.

In kamailio config you can use crypto module to encrypt a text and store it in a variable:

  - https://www.kamailio.org/docs/modules/stable/modules/crypto.html

Then you can use sqlops to insert into the database. The issue comes when dumping stored messages... probably you can just replace msilo with sqlops+uac at the expense of a more complex configuration file.

On the other hand, probably adds some privacy to the local platform operators, which have access only to the mysql, because the key will be in kamailio.cfg. For full privacy, the endpoints should do the encryption/decryption with a key they agreed before, without being known by the server.

Cheers,
Daniel

Sent message to mailing list

---

From: "volga629" <volga629@skillsearch.ca>
To: miconda@gmail.com
Sent: Thursday, 24 November, 2016 00:25:30
Subject: Re: [SR-Users] msilo

Hello Everyone,

I want to ask about another improvement for MSILO module. If possible encrypt BODY column in database. That will improve some privacy concerns for storing body in plain text.

Slava. 

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 28-30, 2016 - http://www.asipto.com

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