You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
3.9 KiB
128 lines
3.9 KiB
######## NAT Traversal module - signaling functions ########
|
|
#!ifndef NATHELPER_LOADED
|
|
loadmodule "nathelper.so"
|
|
#!trydef NATHELPER_LOADED
|
|
#!endif
|
|
modparam("nathelper", "received_avp", "$avp(AVP_RECV_PARAM)")
|
|
modparam("nathelper", "sipping_from", "sip:registrar@MY_HOSTNAME")
|
|
|
|
#!ifdef WEBSOCKETS_ROLE
|
|
#!trydef KZ_NAT_DETECT 83
|
|
#!else
|
|
#!trydef KZ_NAT_DETECT 19
|
|
#!endif
|
|
|
|
#!trydef KZ_NAT_FIX_SDP_REQUEST 1
|
|
#!trydef KZ_NAT_FIX_SDP_REPLY 1
|
|
#!trydef KZ_NAT_SDP_TEST 8
|
|
#!trydef KZ_NAT_SDP_FIX 10
|
|
|
|
|
|
kazoo.nat_fix_sdp_request = KZ_NAT_FIX_SDP_REQUEST descr "performs request sdp replacement of private addresses"
|
|
kazoo.nat_fix_sdp_reply = KZ_NAT_FIX_SDP_REPLY descr "performs reply sdp replacement of private addresses"
|
|
|
|
####### NAT Traversal Logic ########
|
|
route[NAT_SDP]
|
|
{
|
|
if( has_body("application/sdp")) {
|
|
if( nat_uac_test(KZ_NAT_SDP_TEST)) {
|
|
xlog("L_DEBUG", "$ci|log|applying sdp nat fix\n");
|
|
$var(ret) = fix_nated_sdp(KZ_NAT_SDP_FIX);
|
|
xlog("L_DEBUG", "$ci|log|result of applying sdp nat fix is $var(ret)\n");
|
|
} else if( is_method("INVITE") && !isflagset(FLAG_INTERNALLY_SOURCED) && is_audio_on_hold()) {
|
|
xlog("L_DEBUG", "$ci|log|applying sdp nat fix for held channel\n");
|
|
$var(ret) = fix_nated_sdp(KZ_NAT_SDP_FIX);
|
|
xlog("L_DEBUG", "$ci|log|result of applying sdp nat fix for held channel is $var(ret)\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
route[NAT_DETECT]
|
|
{
|
|
|
|
if($sel(cfg_get.kazoo.nat_fix_sdp_request) == 1) {
|
|
route(NAT_SDP);
|
|
}
|
|
|
|
if ($Rp == "5080") {
|
|
setflag(FLAG_SKIP_NAT_CORRECTION);
|
|
xlog("L_DEBUG", "$ci|log|skipping nat correction on PORT 5080\n");
|
|
} else {
|
|
if (is_present_hf("Record-Route")) {
|
|
$var(i) = 0;
|
|
$var(rr_count) = $rr_count;
|
|
while($var(i) < $var(rr_count)) {
|
|
$var(rr_base) = $(hdr(Record-Route)[$var(i)]);
|
|
$var(rr_idx) = 0;
|
|
$var(rr) = $(var(rr_base){s.select,$var(rr_idx),,});
|
|
while($var(rr) != $null && $var(rr) != "") {
|
|
$var(i) = $var(i) + 1;
|
|
if (!is_myself("$(var(rr){nameaddr.uri})")) {
|
|
setflag(FLAG_SKIP_NAT_CORRECTION);
|
|
xlog("L_DEBUG", "$ci|log|skipping nat correction on record-route $(var(rr){nameaddr.uri})\n");
|
|
}
|
|
$var(rr_idx) = $var(rr_idx) + 1;
|
|
$var(rr) = $(var(rr_base){s.select,$var(rr_idx),,});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isflagset(FLAG_SKIP_NAT_CORRECTION)) {
|
|
xlog("L_DEBUG", "$ci|log|skipping nat detection\n");
|
|
return;
|
|
}
|
|
|
|
force_rport();
|
|
|
|
if(nat_uac_test(KZ_NAT_DETECT)) {
|
|
xlog("L_DEBUG", "$ci|log|detected nat request\n");
|
|
setflag(FLT_NATS);
|
|
if (!is_method("REGISTER")) {
|
|
if(is_first_hop()) set_contact_alias();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
route[NAT_MANAGE]
|
|
{
|
|
if( is_reply() && $sel(cfg_get.kazoo.nat_fix_sdp_reply) == 1) {
|
|
route(NAT_SDP);
|
|
}
|
|
|
|
if ( is_request() && isflagset(FLAG_INTERNALLY_SOURCED)) {
|
|
xlog("L_DEBUG", "$ci|log|INTERNAL AND REQUEST => SET FLB_NATB\n");
|
|
setbflag(FLB_NATB);
|
|
}
|
|
|
|
if ( is_request() && has_totag() ) {
|
|
xlog("L_DEBUG", "$ci|log|TOTAG AND REQUEST => SET FLB_NATB\n");
|
|
setbflag(FLB_NATB);
|
|
}
|
|
|
|
if (is_reply()) {
|
|
set_contact_alias();
|
|
}
|
|
|
|
if (!(isflagset(FLT_NATS) || isbflagset(FLB_NATB))) {
|
|
xlog("L_DEBUG", "$ci|log|NOT SETTING\n");
|
|
return;
|
|
}
|
|
|
|
if (is_reply()) {
|
|
if(isflagset(FLT_NATS) || isbflagset(FLB_NATB)) {
|
|
if(is_first_hop()) {
|
|
if (!isflagset(FLAG_MANUAL_ALIAS)) {
|
|
xlog("L_DEBUG", "$ci|log|MANAGE => SET CONTACT ALIAS\n");
|
|
set_contact_alias();
|
|
}
|
|
} else {
|
|
xlog("L_DEBUG", "$ci|log|MANAGE => NOT FIRST HOP $mb\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
# vim: tabstop=4 softtabstop=4 shiftwidth=4 expandtab
|