[OpenSIPS-Users] Retrieve callee auth username and realm

[Jeff Pyle]

Andreas,

On the usr preferences, you're right.  Not the cleanest approach.  Bogdan's
approach seemed quite elegant, and completely accommodated by the built-in
functions.  In other words, not special or custom.  That's almost always
better.


- Jeff



On 3/10/09 8:56 AM, "Andreas Westermaier" <andreas.westermaier at gmx.de>
wrote:

> Hi Jeff,
> 
>> Instead of using the To URI, I think you'll need to relate the dialed
>> number back to the authorization user to be able to use the same profile
>> values to get your counts.
> 
> The uri's of the users equals their associated pstn number. This is the to-uri
> for external calls from gateways coming in.
> 
>> The uri table may help with this, as part of the uri_db
>> module and use_uri_table parameter.
> 
> Authorization is done via radius. The mapping between auth-user and uri is
> done in the uri-table.
> 
>> But, this also adds the possibility of
>> using the check_from() function to restrict your customers' From users to
>> be their PSTN numbers.  I think.  I'd have to work through that one
>> completely.
> 
> So we already use check_from() to restrict the customers to only use uri's
> (pstn-numbers) which are associated to them.
> 
>> Another way may be to use AVP user preferences to relate both the
>> authorization user (for outbound calls) and PSTN numbers (for inbound
>> calls) back to the same SIP "account".  Then, use the uuid of the user
>> preference to key your profile values
> 
> Ok, didn't think about that, yet. This should definitely work, but imposes
> using an additional table to maintain (the usr preferences) and duplicate user
> data storage.
> 
> My idea was to use the uri table also for this back-mapping of uri's to
> auth-name/realm by the two introduced additional functions.
> 
> Do you think this scenario to 'special' for extending the uri_db module?
> 
> 
> Regards,
> Andreas
> 
> 
> 
> 
> -----Original Message-----
> From: Jeff Pyle [mailto:jpyle at fidelityvoice.com]
> Sent: Tuesday, March 10, 2009 12:55 PM
> To: andreas.westermaier at gmx.de; users at lists.opensips.org
> Subject: Re: [OpenSIPS-Users] Retrieve callee auth username and realm
> 
> Andreas,
> 
> Instead of using the To URI, I think you'll need to relate the dialed number
> back to the authorization user to be able to use the same profile values to
> get your counts.  The uri table may help with this, as part of the uri_db
> module and use_uri_table parameter.  This is a probably a lot of reworking
> and rethinking your lookup logic.  But, this also adds the possibility of
> using the check_from() function to restrict your customers' From users to be
> their PSTN numbers.  I think.  I'd have to work through that one completely.
> 
> Another way may be to use AVP user preferences to relate both the
> authorization user (for outbound calls) and PSTN numbers (for inbound calls)
> back to the same SIP "account".  Then, use the uuid of the user preference
> to key your profile values.
> 
> Hopefully something in here is helpful for you.
> 
> 
> - Jeff
> 
> 
> 
> On 3/10/09 7:45 AM, "Andreas Westermaier" <andreas.westermaier at gmx.de>
> wrote:
> 
>> Hi,
>> 
>> in one of our setups we want to have one authorization username per customer,
>> which in turn got different sip accounts (user names). For each of its
>> accounts the customer uses the same authorization user name and the same
>> password, just the user name differs.
>> 
>> We want to enforce a inbound _and_ outbound channel limitations on a per
>> customer basis, this means on the authorization user. A customer should just
>> be able to receive/make two (the sum of incoming and outgoing) calls, where
>> it
>> doesn't matter which of its sip accounts the customer uses.
>> 
>> For outgoing channel limitation I currently achieve this by setting
>> set_dialog_profile("xyz", "$au@$ar"), where I bind the profile to the auth
>> user and realm. But for incoming calls, especially from our pstn gateway, I
>> currently have only access to the "to-uri" and I'm not able to get the
>> current
>> amount of calls the callee currently has.
>> 
>> Is there a way to retrieve the corresponding auth-user and realm for a local
>> callee from the "to-uri", already?
>> 
>> If not, where is the best place to start integrating this function? I thought
>> of adding it to the uri_db module where the functions then could be called
>> just like 
>> 
>> - get_uri_authuser("$tu", "$avp(s:tu_au)") and
>> - get_uri_authrealm("$tu", "$avp(s:tu_ar)")
>> 
>> Auth user/realm will be returned in the given avp and the function returns
>> success or no success (if no local user fort he given to-uri exists).
>> 
>> Please tell me if there's already such a possibility so I can start
>> implementing it if it's not. I think such functions are essential in
>> enforcing
>> channel limits which affect inbound and outbound channels at the same time
>> for
>> one user with multiple sip accounts.
>> 
>> Comments appreciated. :-)
>> 
>> 
>> Regards,
>> Andreas
>