Hi, Schneur!
The second parameter of the is_ip_registered() function[1] should be the
AOR of the caller, in the sip:SIP_USER@SIP_DOMAIN format. The source IP
is only checked against the contacts of that specific subscriber.
However, if I understand correctly, your problem is determining what is
the correct AOR to use, because the From username and domain might be
different between REGISTER and INVITE, right? If that's the case, you
don't have that many choices: either you search through all registered
IPs (but there is no OpenSIPS function to do that, so you'll need
someting external as you've already done), or you create some sort of
mappings between the REGISTER and INVITE users/formats. Or you impose
your customers to comply with a specific format, that can help you
figure out the mapping.
[1] http://www.opensips.org/html/docs/modules/2.2.x/registrar.html#id294953
Best regards,
Răzvan Crainea
OpenSIPS Solutions
www.opensips-solutions.com
On 12/04/2016 01:20 PM, Schneur Rosenberg wrote:
Hi, I would like to check during the initial invite if the request
comes from a IP that is registered (I don't care about the user
credentials at this time), I use it to know if the invite is from a
registered user or if it is from a unauthenticated source (DID's or
hacking attempt) I can't use is_contact_registered() because not all
clients send the user name in the initial invite, and they only send
it in the authentication username which is absent in the initial
invite, therefore I want to use is_ip_registered() but I'm having
issues and I don't understand exactly what the second parameter is
for, I want to check for the ip in the $si variable if it is
registered (either in the contact field or in the received field).
When leaving blank the AOR field, some devices work well but some don't.
Due to NAT some devices register the IP in the contact field, and some
in the received field, I want to try to match to either one, and it
should parse the contact field that it should ignore the username from
the contact field.
I was doing a avp_db_query() until now, but it had 2 major issues.
1) It runs a MYSQL query on each REQUEST which reduces performance, I
couldn't use memcache because IP's are dynamic in nature.
2) I use db_mode 2 on usrloc and it takes about a minute for the
registration to appear in the DB and the user can't call out during
that minute, and even worse if he tries multiple times and it gets
rejected my iptables will block his IP.
thank you
S. Rosenberg
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