Hello Everyone,

I tried use sr.pv.sets, but not sure how to pass value to it.

#!/usr/bin/lua

math.randomseed(os.time())

ruid = string.format("uloc-%08x-%03x-%x", math.random(0xffffffff), math.random(0xfff), math.random(0xf))

print(ruid) ---> Works
sr.pv.sets("$var(ruid)", "ruid") ---> In kamailio just static ruid

Output

AOR: New user Ruid -->[ruid]

Slava.

From: "volga629" <volga629@skillsearch.ca>
To: "sr-users" <sr-users@lists.sip-router.org>
Sent: Saturday, 26 November, 2016 23:41:46
Subject: Re: [SR-Users] msilo

Hello Everyone,

Can't find how actually return actual value from lua script not 1.

Because my setup is pass through REGISTER to B2BUA, I can't use registrar module. I though insert manually, but location table require ruid entry. I installed small lua script to generate it. Not sure if this good approach for it.

When user send first REGISTER in request do like this

if(is_method("REGISTER")) {
add_path_received();
xlog("L_INFO", "MSILO: New user request saving contact [$ct]\n");
$var(ruid) = lua_dofile("/usr/bin/ruid.lua");
xlog("L_INFO", "AOR: New user Ruid -->[$var(ruid)]\n");
sql_query_async("cb","INSERT INTO location(id, username, expires, contact, user_agent, domain, callid, ruid) VALUES(0, '$au', $TS, '$ct', '$ua', '$fd', '$ci', '$var(ruid)')");
}

Slava.

From: "volga629" <volga629@skillsearch.ca>
To: "sr-users" <sr-users@lists.sip-router.org>
Sent: Friday, 25 November, 2016 02:14:59
Subject: Re: [SR-Users] msilo

Hello Everyone,

I am trying run small lua script to generate random formatted string, but always get 1. Is script need be set in special way ? That related

to MSILO setup which I am trying to do.

xlog("L_INFO", "MSILO: New user request saving contact [$ct]\n");
$var(ruid) = lua_dofile("/usr/bin/ruid.lua");
xlog("L_INFO", "AOR: New user Ruid -->[$var(ruid)]\n");

Output

Nov 25 01:06:54 cavprx00 /usr/sbin/kamailio[3345]: INFO: <script>: AOR: New user Ruid -->[1]

Actual output

[root@cavprx00 kamailio]# /usr/bin/ruid.lua
uloc-8b7dae10-c17-2

[root@cavprx00 kamailio]# cat /usr/bin/ruid.lua
#!/usr/bin/lua

math.randomseed(os.time())
print(string.format("uloc-%08x-%03x-%x", math.random(0xffffffff), math.random(0xfff), math.random(0xf)))

Slava.

From: "volga629" <volga629@skillsearch.ca>
To: "sr-users" <sr-users@lists.sip-router.org>
Sent: Thursday, 24 November, 2016 12:15:45
Subject: Re: [SR-Users] msilo

Hello Everyone,

For dump I though do something like this. No sure if possible optimise it. Also how if possible convert inc_time to human readable ?

xlog("L_INFO", "[$rm], Got Register request for <$tU> dumping OFFLINE SMS\n");

while(sql_pvquery("cb","SELECT id FROM silo ORDER BY id ASC","$avp(id)")) {
sql_pvquery("cb", "SELECT dst_addr, src_addr, body, inc_time FROM silo WHERE id = '$avp(id)'","$avp(dst), $avp(src), $avp(body), $avp(time)");
crypto_aes_decrypt("$var(body)", "decryption key", "$avp(decrypted)");

$uac_req(method)="MESSAGE";
$uac_req(furi)=$avp(src);
$uac_req(turi)=$avp(dst);
$uac_req(body)=$avp(decrypted);
uac_req_send();
}

Slava.

From: "volga629" <volga629@skillsearch.ca>
To: miconda@gmail.com, "sr-users" <sr-users@lists.sip-router.org>
Sent: Thursday, 24 November, 2016 09:34:18
Subject: Re: [SR-Users] msilo

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

On 24/11/2016 05:28, Slava Bendersky wrote:

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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