#!KAMAILIO

################################################################
#
#  SIP relay server for Bluepackets
#  Author: Stanislav Sinyagin <ssinaygin@k-open.com>
#
################################################################

fork=yes
children=4


###  Site-specific configuration defines hosts and ports
include_file "/etc/kamailio/kamailio_siteconfig.cfg"

####### Global Parameters #########

#!ifdef WITH_DEBUG
debug=4
log_stderror=no
#!else
debug=2
log_stderror=no
#!endif

memdbg=5
memlog=5

log_facility=LOG_LOCAL0

# This is not part of siteconfig because the routing logic
# depends on these settings
disable_tcp=yes
auto_aliases=no
mhomed=1


####### Modules Section ########

mpath="/usr/lib/x86_64-linux-gnu/kamailio/modules"

loadmodule "mi_fifo.so"
loadmodule "kex.so"
loadmodule "sl.so"
loadmodule "rr.so"
loadmodule "pv.so"
loadmodule "maxfwd.so"
loadmodule "textops.so"
loadmodule "siputils.so"
loadmodule "xlog.so"
loadmodule "sanity.so"
loadmodule "ctl.so"
loadmodule "cfg_rpc.so"
loadmodule "mi_rpc.so"

loadmodule "rtpproxy.so"
loadmodule "nathelper.so"

#!ifdef WITH_DEBUG
loadmodule "debugger.so"
#!endif

# ----------------- setting module-specific parameters ---------------


modparam("mi_fifo", "fifo_name", "/tmp/kamailio_fifo")

modparam("nathelper", "received_avp", "$avp(RECEIVED)")
modparam("nathelper", "nortpproxy_str", "a=sdpmangled:yes\r\n")

modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:9000")
modparam("rtpproxy", "nortpproxy_str", "")

#!ifdef WITH_DEBUG
# ----- debugger params -----
modparam("debugger", "cfgtrace", 1)
#!endif

####### Routing Logic ########


route {
    if (!sanity_check()) {
        exit;
    }

    if ( !mf_process_maxfwd_header("10") )
    {
        sl_send_reply("483","To Many Hops");
        xlog("L_NOTICE", "$si $rm $ru -- too many hops\n");
        exit;
    }

    if( !is_method("OPTIONS") )
    {
        xlog("L_INFO", "received SIP request: " +
            "$si:$sp -> $rm $ru From: $fu To: $tu\n");
    }
    
    if( !loose_route() )
    {
        $var(usr) = "";
        if( !strempty($rU) )
        {
            $var(usr) = $rU + "@";
        }
        
        if (dst_ip == 192.168.0.2 && dst_port == 5060)
        {
            $du = "sip:" + "192.168.1.1" + ":" + "5060";
            $ru = "sip:" + $var(usr) + "192.168.1.1" + ":" + "5060";
            loose_route();
            record_route();
            rtpproxy_manage("cwie");	
        }
        else if (dst_ip == 192.168.1.1 && dst_port == 5060)
        {
            $du = "sip:" + "192.168.0.1" + ":" + "5060";
            $ru = "sip:" + $var(usr) + "192.168.0.1" + ":" + "5060";
            rtpproxy_manage("cwei");
            record_route(); 
        }
        else
        {
            xlog("L_NOTICE", "Dropping request: $si:$sp $rm $ru\n");
            exit;
        }
    }


    forward();
    if( !is_method("OPTIONS") )
    {
        xlog("L_INFO", "forwarding SIP request: " +
            "$nh(u) <- $rm $ru From: $fu To: $tu\n");
    }
}


onreply_route {

    if( !is_method("OPTIONS") )
    {
        xlog("L_INFO", "received SIP reply: " +
            "$si:$sp -> $rs $rm From: $fu To: $tu\n");
    }
    
    if (dst_ip == 192.168.0.2 && dst_port == 5060)
    {
        rtpproxy_manage("cwei");
    }
    else if(dst_ip == 192.168.1.1 && dst_port == 5060)
    {
        rtpproxy_manage("cwie");
#        fix_nated_contact();
    }
    else
    {
        exit;
    }
    
    return(1);
}



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