asterisk users - Mar 2008 - How to find out the IP of the calling party?

Hi All,

I'm trying to achieve the following:

- If <sip/iax user> logs in from home, they can dial internal extensions
only (this is to avoid employees going wild on local/mobile calls from home)
- If <sip/iax user> logs in from the office, they can call anyone they
want.

Since I have my users defined in an LDAP tree, I'd like to stick to
one-account-per-user (each account is setup for both - IAX and SIP logins -
to allow the employee to use IAX from home and SIP at work, or whatever
combination they prefer).

So, I thought I would simply look at the IP address of the originating call.
If the SIP/IAX user has an IP address outside the local subnet -> allow
calls to extensions only. Else -> allow all. I thought the best way of doing
this would be using AGI with a Perl script. The only problem I'm having is
determining the IP address of the originating call. I can't find any channel
variable that gives me this info.

The reason why I mentioned that I'd like to stick to one-account-per-user is
that I know I could fix this simply by having 2 accounts per user (one that
allows connections from the local subnet, and the other to login from
outside and use different contexts for each), but it'd be much nicer to
avoid having 2 accounts per user.

If anyone has any suggestions on how to achieve the above, I'd love to read
them!

Thanks in advance.
Gonzalo
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On Thu, Mar 13, 2008 at 3:47 AM, Gonzalo Servat <gservat at gmail.com>
wrote:
>
> I can't find any channel variable that gives me this info.
>
  Gonzalo,

  With SIP callers you can get the address from the SIPURI channel variable.
  IAX does not seem to have an equivalent var... The best I could find is the
  output of "iax2 show channels" on the CLI wich seems to include the
peer IP
  for running channels.

  Good luck,
--
 exvito

Improvement: also check the funcions SIPCHANINFO and IAXPEER... With
  this and the SIPURI channel variable you should be able to have all the info.

  Cheers,
--
 exvito

I dont know about IAX, but for SIP users you can use the function
SIP_HEADER(headername) to get the information u need from the sip packets.
for example you can use SIP_HEADER(From) which will give you the From header
containing the IP address of the caller. You will have to apply regex on it
to extract the ip.

On Thu, Mar 13, 2008 at 8:47 AM, Gonzalo Servat <gservat at gmail.com>
wrote:
> Hi All,
>
> I'm trying to achieve the following:
>
> - If <sip/iax user> logs in from home, they can dial internal
extensions
> only (this is to avoid employees going wild on local/mobile calls from
home)
> - If <sip/iax user> logs in from the office, they can call anyone
they
> want.
>
> Since I have my users defined in an LDAP tree, I'd like to stick to
> one-account-per-user (each account is setup for both - IAX and SIP logins -
> to allow the employee to use IAX from home and SIP at work, or whatever
> combination they prefer).
>
> So, I thought I would simply look at the IP address of the originating
> call. If the SIP/IAX user has an IP address outside the local subnet ->
> allow calls to extensions only. Else -> allow all. I thought the best
way of
> doing this would be using AGI with a Perl script. The only problem I'm
> having is determining the IP address of the originating call. I can't
find
> any channel variable that gives me this info.
>
> The reason why I mentioned that I'd like to stick to
one-account-per-user
> is that I know I could fix this simply by having 2 accounts per user (one
> that allows connections from the local subnet, and the other to login from
> outside and use different contexts for each), but it'd be much nicer to
> avoid having 2 accounts per user.
>
> If anyone has any suggestions on how to achieve the above, I'd love to
> read them!
>
> Thanks in advance.
> Gonzalo
>
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-- 
Best Regards
Rizwan Hisham
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