12 Jul
2006
12 Jul
'06
4:57 a.m.
Hi Ilker,
just my first idea, not tested:
1. lookup the From HF
if (!lookup_user("From")) {
# reject the INVITE
...
}
2. save original To UID and Request URI
$orig_to_uid = $tu.uid;
$orig_req_uri = @ruri;
3. set To UID -- registrar module will use this in the lookup
$tu.uid = $fu.uid;
4. lookup From HF and compare the source address of the INVITE with the
source address of the REGISTER message
if (lookup("location")) {
if ((src_ip != @ruri.host) || (src_port != @ruri.port)) {
# reject the INVITE
...
}
# restore original To UID and Request URI
$tu.uid = $orig_to_uid;
attr2uri("$orig_req_uri");
} else {
# reject the INVITE
...
}
Note, that the above solution is a bit ugly, you can get into troubles
when the user registers multiple contact addresses. It is better to
disable branches (see append_branches parameter in registrar module),
but you loose some functionality.
Regards,
Miklos
İlker Aktuna (Koç.net) wrote:
Hi everyone,
I am still trying to find a solution to this problem. (but couldn't find
yet)
Victor was trying to help me but I think he's not able to reply these days.
Is there any idea to achieve what I need.
Thanks,
ilker
------------------------------------------------------------------------
*From:* serusers-bounces(a)lists.iptel.org
[mailto:serusers-bounces@lists.iptel.org] *On Behalf Of *İlker Aktuna
(Koç.net)
*Sent:* Tuesday, July 11, 2006 1:41 PM
*To:* Victor Stanescu
*Cc:* serusers(a)iptel.org
*Subject:* RE: [Serusers] prevent INVITE without REGISTERing
Hi,
What if my proxy does not handle authenticating INVITE messages ?
In that case I think the best way is to lookup location table for the
source URI.
If the source URI location matches the location in that table then we
must permit INVITE message.
How can I configure this ?
Thanks,
ilker
-----Original Message-----
From: serusers-bounces(a)lists.iptel.org
[mailto:serusers-bounces@lists.iptel.org] On Behalf Of Victor Stanescu
Sent: Monday, July 10, 2006 1:49 PM
Cc: serusers(a)iptel.org
Subject: Re: [Serusers] prevent INVITE without REGISTERing
Please read "domain" instead of "gtstelecom.ro":
www_authorize("domain",
"subscriber") and proxy_authorize("domain", "subscriber"),
otherwise the
code fragment will not be correct. I forgot to replace with a generic name.
Victor Stanescu wrote:
I think it is easier to force him to authenticate
the INVITE. If he is
able to authenticate the INVITE, why do you care if he is registered
or not?
if (method=="REGISTER") {
if(!src_ip=="other") {
if (!www_authorize("gtstelecom.ro", "subscriber")) {
www_challenge("domain", "0");
break;
};
save("location");
log("Replicating REGISTER\n");
t_replicate("other", "5060");
} else {
save("location");
};
break;
} else {
# this is an INVITE
if (!proxy_authorize("gtstelecom.ro", "subscriber")) {
proxy_challenge("domain", "1");
break;
};
# route the call
...
};
İlker Aktuna (Koç.net) wrote:
>
> Hi all,
>
> Is it possible to prevent any user calling without registering ? What
> is the best way to do this ?
> I guess I'll have to check if the source URI exists in location table.
> What is the easiest way to do this ?
>
> If there is a more robust way to do it, please suggest...
>
> Thanks,
> ilker
>
>
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