[SR-Users] registrar and check registered

[Victor V. Kustov]

Hi.

I try to use Kamailio 4.1 git version as registrar and PSTN gw. 

Need accept register from users. Its OK, I made it and use save()
function - from keep registrations in case of kamailio restart.

Need forward calls to gw, but only for registered users.
If I understand correctly in INVITE enough check
registered("location"), isnt it? but it's not work, i need verify auth
again.



Routing part of my config:


route {
        # initial sanity checks - skip in letter
        
# We are registrar!

        if (is_method("REGISTER"))
        {
                sl_send_reply("100", "Trying"); # send "Trying, dont threat on me
                if(isflagset(FLT_NATS))
                {
                      setbflag(FLB_NATB);
                        # uncomment next line to do SIP NAT pinging
                        ## setbflag(FLB_NATSIPPING);
                }

                # we must check auth right now
                # WORK: if (!www_authorize("$fd", "subscriber")) 
                if (!auth_check("$fd", "subscriber", "1")) 
                {
                    # WORK: www_challenge("$fd", "0");
                    auth_challenge("$fd", "0");
                    # send me requisites plz
                    exit;
                } else
                {
                    # ok. auth accepted, save in location
                    if (save("location")) 
                    #if (save("location","0x04","$fd"))
		            {
                        xlog("L_WARN", "Save OK in location sip:$au@$fd");
		            } else 
		            { 
                        xlog("L_WARN", "Save FAIL in location sip:$au@$fd");
		            }
                }

                xlog("L_WARN", "REGISTERED method done");
                exit;
        }

        if (is_method("INVITE"))
        {
           if ($si == $sel(cfg_get.pstn.gw_ip)) 
           {
             # incoming calls
             xlog("L_WARN", "Incoming call");
           } else  
           {
                # outgoing calls

                xlog("L_WARN", "Outgoing call");
                # check auth
                # we must check auth right now

                if (!proxy_authorize("$fd", "subscriber")) 
                {
                    proxy_challenge("$fd", "0");
                    exit;
                }
                
                consume_credentials();

### THAT FUNCTIONS ALWAYS WRITE IN LOGS
# "!registered" "!lookup" for both registered and unregged users

#                if (!registered("location")) xlog("L_WARN","!registered");
#                if (!lookup("location")) xlog("L_WARN", "!lookup");

                # number change - FIX late
                # check may be used dialplan automatically?

                # route
                $ru = "sip:" + $rU + "@" + $sel(cfg_get.pstn.gw_ip);
                xlog("L_WARN", "Rewrite to $ru, send to PSTN.");
		        
                if (!t_relay()) { sl_reply_error(); }
           } 

	} else 
       {
	# reply 2 keepalive and drop all 
        # if (!t_relay()) { sl_reply_error(); }
        }	

}






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	Victor V. Kustov
  +7 (952) 966 76 24
  JID: coyote at bks.tv
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