diff --git a/kamailio/acl-role.cfg b/kamailio/acl-role.cfg new file mode 100644 index 0000000..d0cbcb4 --- /dev/null +++ b/kamailio/acl-role.cfg @@ -0,0 +1,253 @@ +######## DoS prevention module ######## +# Default "order" is "deny,allow". +# So if there is no data from DB request will be permitted by default. +# +loadmodule "ipops.so" +modparam("htable", "htable", "acl=>initval=-1;autoexpire=7200") + +#!trydef ACL_MESSAGE_DENY "Rejected by ACL" +#!trydef ACL_CODE_DENY "603" +#!trydef ACL_ORDER_ALLOW_DENY "allow,deny" +#!trydef ACL_IP_ADDR_ANY "0.0.0.0/0" + +#!trydef IP_REGEX "[0-9]{1,3}\.[0-9]{1,3}.[0-9]{1,3}\.[0-9]{1,3}" + +## Route for ACL functionality +route[ACL_CHECK] { + + # If packet came from platform or from 4 class MERA, do not check it + if (isflagset(FLAG_INTERNALLY_SOURCED) || isflagset(FLAG_TRUSTED_SOURCE) ) { + xlog("L_DEBUG", "$ci|ACL|Trusted source IP($si) ignoring"); + return; + } + + + if (isflagset(FLAG_IS_REPLY)) { + $var(sip-packet) = $rs; + } else { + $var(sip-packet) = $rm; + } + + # FIX for BYE method with IP instead of REALM in From, take REALM from To header + if ($fd =~ IP_REGEX) { + xlog("L_WARNING","$ci|ACL-realm|Fix for $var(sip-packet) with IP in from URI: use to-domain"); + $var(realm) = $td; + } else { + $var(realm) = $fd; + } + + $var(acl-realm-request) = "false"; + $var(acl-device-request) = "false"; + + $var(realm-decision) = $sht(acl=>$var(realm)/$si); + + if ($var(realm-decision) == -1) { # we do not have cached decision + $var(acl-realm-request) = "true"; + } else if ($var(realm-decision) == 1 ){ # We have cached decision, let's use it + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(realm)\n"); + } else { + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(realm)\n"); + exit; + } + + if (not_empty("$fU")) { + if ($fd =~ IP_REGEX) { + xlog("L_WARNING","$ci|ACL-device|Fix for $var(sip-packet) with IP in from URI: use to-domain"); + $var(device) = $fU + "@" + $td; + } else { + $var(device) = $fU + "@" + $fd; + } + $var(device-decision) = $sht(acl=>$var(device)/$si); + + if ($var(device-decision) == -1) { # we do not have cached decision + $var(acl-device-request) = "true"; + } else if ($var(device-decision) == 1 ){ # We have cached decision, let's use it + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(device)\n"); + } else { + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(device)\n"); + exit; + } + } + + + if ($var(acl-realm-request) == "true" || $var(acl-device-request) == "true") { + if (not_empty("$fU")) + $var(query) = "{'Event-Category': 'acl', 'Event-Name': 'query', 'Entity': '" + $var(device) + "', 'With-Realm': " + $var(acl-realm-request) + "}"; + else + $var(query) = "{'Event-Category': 'acl', 'Event-Name': 'query', 'Entity': '" + $var(realm) + "'}"; + xlog("L_DBG", "$ci|ACL log|Query: $var(query)"); + if (kazoo_query("frontier", "sbc_config", $var(query), "$var(acl-response)")) { + xlog("L_DBG", "$ci|ACL log|Response: $var(acl-response)"); + + kazoo_json($var(acl-response), "Realm.Order", "$var(acl-realm-order)"); + kazoo_json($var(acl-response), "Realm.CIDR", "$var(acl-realm-cidr)"); + kazoo_json($var(acl-response), "Device.Order", "$var(acl-device-order)"); + kazoo_json($var(acl-response), "Device.CIDR", "$var(acl-device-cidr)"); + kazoo_json($var(acl-response), "Device.User-Agent", "$var(acl-device-ua)"); + + } else { + xlog("L_ERROR","$ci|ACL log|DB is unreachable"); + $sht(acl=>$var(device)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(device)\n"); + return; + } + + route(ACL_CHECK_REALM); + if (not_empty("$fU")) { + route(ACL_CHECK_DEVICE); + } + } + +} + +# Check ORDER setting for REALM +route[ACL_CHECK_REALM] { + if (not_empty("$var(acl-realm-order)")) { + if ($var(acl-realm-order) == ACL_ORDER_ALLOW_DENY) { + route(ACL_CHECK_REALM_ALLOW); + } else { + route(ACL_CHECK_REALM_DENY); + } + } else { + xlog("L_INFO","$ci|ACL-realm|undefined Order in response for $var(realm)"); + $sht(acl=>$var(realm)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(realm)\n"); + } +} + +route[ACL_CHECK_REALM_ALLOW] { + if (not_empty("$var(acl-realm-cidr)")) { + $var(i) = 0; + kazoo_json($var(acl-response), "Realm.CIDR[$var(i)]", "$var(record)");; + while(not_empty("$var(record)")) { + xlog("L_INFO", "$ci|ACL-realm|checking if $si is in $var(record)"); + if (($var(record) == ACL_IP_ADDR_ANY) || is_in_subnet("$si", $var(record))) { + $sht(acl=>$var(realm)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(realm)\n"); + return; + } + $var(i) = $var(i) + 1; + kazoo_json($var(acl-response), "Realm.CIDR[$var(i)]", "$var(record)");; + } + } else { + xlog("L_INFO", "$ci|ACL-realm|undefined CIDR in response for $var(realm)"); + } + # Remember in CACHE and DENY + $sht(acl=>$var(realm)/$si) = 0; + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(realm)\n"); + exit; +} + +route[ACL_CHECK_REALM_DENY] { + $var(size) = $(kzR{kz.json,Realm.CIDR.length}); + if (not_empty("$var(acl-realm-cidr)")) { + $var(i) = 0; + kazoo_json($var(acl-response), "Realm.CIDR[$var(i)]", "$var(record)");; + while(not_empty("$var(record)")) { + xlog("L_INFO", "$ci|ACL-realm|checking if $si is in $var(record)"); + if (($var(record) == ACL_IP_ADDR_ANY) || is_in_subnet("$si", $var(record))) { + $sht(acl=>$var(realm)/$si) = 0; + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(realm)\n"); + exit; + } + $var(i) = $var(i) + 1; + kazoo_json($var(acl-response), "Realm.CIDR[$var(i)]", "$var(record)");; + } + } else { + xlog("L_INFO", "$ci|ACL-realm|undefined CIDR in response for $var(realm)"); + } + # Remember in CACHE and ALLOW + $sht(acl=>$var(realm)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(realm)\n"); + return; +} + +# Check ORDER setting for DEVICE +route[ACL_CHECK_DEVICE] { + if (not_empty("$var(acl-device-order)")) { + if ($var(acl-device-order) == ACL_ORDER_ALLOW_DENY) { + route(ACL_CHECK_DEVICE_ALLOW); + } else { + route(ACL_CHECK_DEVICE_DENY); + } + } else { + xlog("L_INFO","$ci|ACL-device|undefined Order in response for $var(device)"); + $sht(acl=>$var(device)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(device)\n"); + } +} + +route[ACL_CHECK_DEVICE_ALLOW] { + if (!not_empty("$var(acl-device-ua)") || (not_empty("$var(acl-device-ua)") && $ua =~ $var(acl-device-ua))) { + if (not_empty("$var(acl-device-cidr)")) { + $var(i) = 0; + kazoo_json($var(acl-response), "Device.CIDR[$var(i)]", "$var(record)");; + while(not_empty("$var(record)")) { + xlog("L_INFO", "$ci|ACL-realm|checking if $si is in $var(record)"); + if (($var(record) == ACL_IP_ADDR_ANY) || is_in_subnet("$si", $var(record))) { + $sht(acl=>$var(device)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(device)\n"); + return; + } + $var(i) = $var(i) + 1; + kazoo_json($var(acl-response), "Device.CIDR[$var(i)]", "$var(record)");; + } + } else { + xlog("L_INFO", "$ci|ACL-realm|undefined CIDR in response for $var(device)"); + } + } + # Remember in CACHE and DENY + $sht(acl=>$var(device)/$si) = 0; + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(device)\n"); + exit; +} + +route[ACL_CHECK_DEVICE_DENY] { + if (not_empty("$var(acl-device-ua)") && !($ua =~ $var(acl-device-ua))) { + $sht(acl=>$var(device)/$si) = 0; + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(device)\n"); + exit; + } + + if (not_empty("$var(acl-device-cidr)")) { + $var(i) = 0; + kazoo_json($var(acl-response), "Device.CIDR[$var(i)]", "$var(record)");; + while(not_empty("$var(record)")) { + xlog("L_INFO", "$ci|ACL-device|checking if $si is in $var(record)"); + if (($var(record) == ACL_IP_ADDR_ANY) || is_in_subnet("$si", $var(record))) { + $sht(acl=>$var(device)/$si) = 0; + if (!isflagset(FLAG_IS_REPLY)) { + sl_send_reply(ACL_CODE_DENY, ACL_MESSAGE_DENY); + } + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is rejected by ACL for $var(device)\n"); + exit; + } + $var(i) = $var(i) + 1; + kazoo_json($var(acl-response), "Device.CIDR[$var(i)]", "$var(record)");; + } + } else { + xlog("L_INFO", "$ci|ACL-device|undefined CIDR in response for $var(device)"); + } + # Remember in CACHE and ALLOW + $sht(acl=>$var(device)/$si) = 1; + xlog("L_INFO", "$ci|ACL|$var(sip-packet) from $si is permitted by ACL for $var(device)\n"); + return; +} diff --git a/kamailio/default.cfg b/kamailio/default.cfg index a521ca0..9e4cf54 100644 --- a/kamailio/default.cfg +++ b/kamailio/default.cfg @@ -8,6 +8,7 @@ flags FLAG_ASSOCIATE_USER: 4, FLAG_TRUSTED_SOURCE: 5, FLAG_SESSION_PROGRESS: 6; + FLAG_IS_REPLY: 7; ####### Global Parameters ######### fork = yes @@ -195,9 +196,15 @@ include_file "accounting-role.cfg" #!ifdef ANTIFLOOD-ROLE include_file "antiflood-role.cfg" #!endif -#!ifdef TRAFFIC-FILTER-ROLE +#!ifdef TRAFFIC_FILTER-ROLE include_file "traffic-filter-role.cfg" #!endif +#!ifdef ACL-ROLE +include_file "acl-role.cfg" +#!endif +#!ifdef RATE_LIMITER-ROLE +include_file "rate-limiter-role.cfg" +#endif #!ifdef PUSHER-ROLE include_file "pusher-role.cfg" #!endif @@ -231,10 +238,18 @@ route route(ANITFLOOD_AUTH_LIMIT); #!endif - #!ifdef TRAFFIC-FILTER-ROLE + #!ifdef TRAFFIC_FILTER-ROLE route(TRAFFIC_FILTER); #!endif + #!ifdef ACL-ROLE + route(ACL_CHECK); + #!endif + + #!ifdef RATE_LIMITER-ROLE + route(DOS_PREVENTION); + #!endif + #!ifdef WEBSOCKETS-ROLE route(HANDLE_WEBSOCKETS); #!endif @@ -312,7 +327,7 @@ route[HANDLE_OPTIONS] if (isflagset(FLAG_INTERNALLY_SOURCED)) { route(INTERNAL_TO_EXTERNAL_RELAY); } else { - #!ifdef TRAFFIC-FILTER-ROLE + #!ifdef TRAFFIC_FILTER-ROLE route(FILTER_REQUEST_DOMAIN); #!endif @@ -336,7 +351,7 @@ route[HANDLE_NOTIFY] } route(INTERNAL_TO_EXTERNAL_RELAY); } else { - #!ifdef TRAFFIC-FILTER-ROLE + #!ifdef TRAFFIC_FILTER-ROLE route(FILTER_REQUEST_DOMAIN); #!endif @@ -373,7 +388,7 @@ route[HANDLE_MESSAGE] xlog("L_INFO", "$ci|log|routing to $ruid"); } route(INTERNAL_TO_EXTERNAL_RELAY); - #!ifdef TRAFFIC-FILTER-ROLE + #!ifdef TRAFFIC_FILTER-ROLE } else if (!isflagset(FLAG_TRUSTED_SOURCE) && $rd =~ "[0-9]{1,3}\.[0-9]{1,3}.[0-9]{1,3}\.[0-9]{1,3}") { xlog("L_WARN", "$ci|end|dropping MESSAGE request with IP domain"); @@ -580,6 +595,16 @@ onreply_route[EXTERNAL_REPLY] #!ifdef NAT-TRAVERSAL-ROLE route(NAT_TEST_AND_CORRECT); #!endif + + #!ifdef ACL-ROLE + setflag(FLAG_IS_REPLY); + route(ACL_CHECK); + #!endif + + #!ifdef RATE_LIMITER-ROLE + setflag(FLAG_IS_REPLY); + route(DOS_PREVENTION); + #!endif } onreply_route[INTERNAL_REPLY] @@ -592,6 +617,16 @@ onreply_route[INTERNAL_REPLY] route(NAT_WEBSOCKETS_CORRECT); #!endif + #!ifdef ACL-ROLE + setflag(FLAG_IS_REPLY); + route(ACL_CHECK); + #!endif + + #!ifdef RATE_LIMITER-ROLE + setflag(FLAG_IS_REPLY); + route(DOS_PREVENTION); + #!endif + if (is_method("INVITE") && !isflagset(FLAG_SESSION_PROGRESS) && t_check_status("(180)|(183)|(200)") diff --git a/kamailio/local.cfg b/kamailio/local.cfg index e3d21f4..48eb357 100644 --- a/kamailio/local.cfg +++ b/kamailio/local.cfg @@ -15,10 +15,12 @@ debug = L_INFO #!trydef NODES-ROLE ## Disabled Roles - remove all but the last '#' to enable -# # #!trydef TRAFFIC-FILTER-ROLE +# # #!trydef TRAFFIC_FILTER-ROLE # # #!trydef WEBSOCKETS-ROLE # # #!trydef TLS-ROLE # # #!trydef ANTIFLOOD-ROLE +# # #!trydef RATE_LIMITER-ROLE +# # #!trydef ACL-ROLE # # #!trydef MESSAGE-ROLE # # #!trydef PUSHER-ROLE diff --git a/kamailio/rate-limiter-role.cfg b/kamailio/rate-limiter-role.cfg new file mode 100644 index 0000000..f39a184 --- /dev/null +++ b/kamailio/rate-limiter-role.cfg @@ -0,0 +1,253 @@ +######## DoS prevention module ######## +modparam("htable", "timer_interval", 10) +modparam("htable", "htable", "rps=>size=8;initval=0;autoexpire=60") +modparam("htable", "htable", "rpm=>size=8;initval=0;autoexpire=180") +modparam("htable", "htable", "tps=>size=8;initval=0;autoexpire=60") +modparam("htable", "htable", "tpm=>size=8;initval=0;autoexpire=180") +modparam("htable", "htable", "rate_limits=>initval=-1;autoexpire=60") # initval = -1 means that record is expired and we need an update from DB + +#!trydef RATE_LIMIT_MESSAGE "Over rate Limit" +#!trydef RATE_LIMIT_CODE "603" + +#!trydef IP_REGEX "[0-9]{1,3}\.[0-9]{1,3}.[0-9]{1,3}\.[0-9]{1,3}" + +route[DOS_PREVENTION] { + + # If packet came from platform or from 4 class MERA, do not check it + if (isflagset(FLAG_INTERNALLY_SOURCED) || isflagset(FLAG_TRUSTED_SOURCE) ) { + xlog("L_DEBUG", "$ci |RL| Trusted source IP($si) ignoring"); + return; + } + + # Initially we do not want to get data + $var(with-realm-request) = "false"; + $var(with-realm-total) = "false"; + $var(with-device-request) = "false"; + $var(with-device-total) = "false"; + $var(method-key) = "Method"; + $var(method-value) = "\"TOTAL\""; + + # SIP methods INVITE and REGISTER have personal counters + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + $var(lrpm_realm) = $fd+"/"+$rm+"/min"; + $var(lrps_realm) = $fd+"/"+$rm+"/sec"; + + $var(lrpm_device) = $fU+"@"+$fd+"/"+$rm+"/min"; + $var(lrps_device) = $fU+"@"+$fd+"/"+$rm+"/sec"; + $var(method-value) = "\"" + $rm + "\""; + } + + # For BYE method we use REALM from To SIP header + if ($fd =~ IP_REGEX) { + xlog("L_WARNING","$ci|RL-realm log| Fixup for $rm method with IP in from URI: use to-domain"); + $var(ltpm_realm) = $td+"/TOTAL/min"; + $var(ltps_realm) = $td+"/TOTAL/sec"; + $var(ltpm_device) = $fU+"@"+$td+"/TOTAL/min"; + $var(ltps_device) = $fU+"@"+$td+"/TOTAL/sec"; + $var(entity) = $td; + } else { + $var(ltpm_realm) = $fd+"/TOTAL/min"; + $var(ltps_realm) = $fd+"/TOTAL/sec"; + $var(ltpm_device) = $fU+"@"+$fd+"/TOTAL/min"; + $var(ltps_device) = $fU+"@"+$fd+"/TOTAL/sec"; + $var(entity) = $fd; + } + + # REALM check + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + if ($sht(rate_limits=>$var(lrpm_realm)) == -1 + || $sht(rate_limits=>$var(lrps_realm)) == -1) { + xlog("L_INFO", "$ci|RL-realm log| Can't find HASHed rate for $var(entity) with $rm method"); + $var(with-realm-request) = "true"; + } + } + + if ($sht(rate_limits=>$var(ltpm_realm)) == -1 + || $sht(rate_limits=>$var(ltps_realm)) == -1) { + xlog("L_INFO", "$ci|RL-realm log| Can't find HASHed rate for $var(entity) with $rm method"); + $var(with-realm-total) = "true"; + } + + if (not_empty("$fU")) { + if ($fd =~ IP_REGEX) { + xlog("L_WARNING","$ci|RL-realm log| Fixup for $rm method with IP in from URI: use to-domain"); + $var(entity) = $fU+"@"+$td; + } else { + $var(entity) = $fU+"@"+$fd; + } + + #DEVICE check + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + if ($sht(rate_limits=>$var(lrpm_device)) == -1 + || $sht(rate_limits=>$var(lrps_device)) == -1) { + xlog("L_INFO", "$ci|RL-device log| Can't find HASHed rate for $var(entity) with $rm method"); + $var(with-device-request) = "true"; + } + } + + if ($sht(rate_limits=>$var(ltpm_device)) == -1 || $sht(rate_limits=>$var(ltps_device)) == -1) { + xlog("L_INFO", "$ci|RL-device log| Can't find HASHed rate for $var(entity) with $rm method"); + $var(with-device-total) = "true"; + } + } + + if ((is_method("INVITE") || is_method("REGISTER")) + && (($var(with-device-request) == "true" && $var(with-device-total) == "true") + || ($var(with-realm-request) == "true" && $var(with-realm-total) == "true"))) { + $var(method-key) = "Method-List"; + $var(method-value) = "[\"" + $rm + "\", \"TOTAL\"]"; + } + + if ( $var(with-device-request) == "true" + || $var(with-device-total) == "true" + || $var(with-realm-request) == "true" + || $var(with-realm-total) == "true" ) { + + avp_printf("$avp(s:query-request)", "{\"Entity\" : \"$var(entity)\", \"$var(method-key)\" : $var(method-value), \"Event-Category\" : \"rate_limit\", \"Event-Name\" : \"query\", \"With-Realm\" : $var(with-realm-request)}"); + xlog("L_INFO", "$ci|RL log| Query: $avp(s:query-request)"); + if (kazoo_query("frontier", "sbc_config", $avp(s:query-request), "$var(amqp_result)")) { + xlog("L_INFO", "$ci|RL log| Response: $var(amqp_result)"); + + kazoo_json($var(amqp_result), "Realm.Minute." + $rm, "$var(realm-min)"); + kazoo_json($var(amqp_result), "Realm.Second." + $rm, "$var(realm-sec)"); + kazoo_json($var(amqp_result), "Realm.Minute.TOTAL", "$var(realm-min-total)"); + kazoo_json($var(amqp_result), "Realm.Second.TOTAL", "$var(realm-sec-total)"); + kazoo_json($var(amqp_result), "Device.Minute." + $rm, "$var(device-min)"); + kazoo_json($var(amqp_result), "Device.Second." + $rm, "$var(device-sec)"); + kazoo_json($var(amqp_result), "Device.Minute.TOTAL", "$var(device-min-total)"); + kazoo_json($var(amqp_result), "Device.Second.TOTAL", "$var(device-sec-total)"); + + if ( not_empty("$var(realm-min)") ) { + $sht(rate_limits=>$var(lrpm_realm)) = $(var(realm-min){s.int}); + xlog("L_INFO", "$ci|RL-realm log| $rm DB=>HASH for $var(lrpm_realm)=$sht(rate_limits=>$var(lrpm_realm))"); + } + if ( not_empty("$var(realm-sec)") ) { + $sht(rate_limits=>$var(lrps_realm)) = $(var(realm-sec){s.int}); + xlog("L_INFO", "$ci|RL-realm log| $rm DB=>HASH for $var(lrps_realm)=$sht(rate_limits=>$var(lrps_realm))"); + } + if ( not_empty("$var(realm-min-total)") ) { + $sht(rate_limits=>$var(ltpm_realm)) = $(var(realm-min-total){s.int}); + xlog("L_INFO", "$ci|RL-realm log| $rm DB=>HASH for $var(ltpm_realm)=$sht(rate_limits=>$var(ltpm_realm))"); + } + if ( not_empty("$var(realm-sec-total)") ) { + $sht(rate_limits=>$var(ltps_realm)) = $(var(realm-sec-total){s.int}); + xlog("L_INFO", "$ci|RL-realm log| $rm DB=>HASH for $var(ltps_realm)=$sht(rate_limits=>$var(ltps_realm))"); + } + if ( not_empty("$var(device-min)") ) { + $sht(rate_limits=>$var(lrpm_device)) = $(var(device-min){s.int}); + xlog("L_INFO", "$ci|RL-device log| $rm DB=>HASH for $var(lrpm_device)=$sht(rate_limits=>$var(lrpm_device))"); + } + if ( not_empty("$var(device-sec)") ) { + $sht(rate_limits=>$var(lrps_device)) = $(var(device-sec){s.int}); + xlog("L_INFO", "$ci|RL-device log| $rm DB=>HASH for $var(lrps_device)=$sht(rate_limits=>$var(lrps_device))"); + } + if ( not_empty("$var(device-min-total)") ) { + $sht(rate_limits=>$var(ltpm_device)) = $(var(device-min-total){s.int}); + xlog("L_INFO", "$ci|RL-device log| $rm DB=>HASH for $var(ltpm_device)=$sht(rate_limits=>$var(ltpm_device))"); + } + if ( not_empty("$var(device-sec-total)") ) { + $sht(rate_limits=>$var(ltps_device)) = $(var(device-sec-total){s.int}); + xlog("L_INFO", "$ci|RL-device log| $rm DB=>HASH for $var(ltps_device)=$sht(rate_limits=>$var(ltps_device))"); + } + } else { + xlog("L_ERROR", "$ci|RL log| $rm DB unreachable for entity: $var(entity)"); + return; + } + } + + if ($fd =~ IP_REGEX) { + xlog("L_WARNING","$ci|RL-device log| Fixup for $rm method with IP in from URI: use to-domain"); + $var(entity) = $td; + } else { + $var(entity) = $fd; + } + $var(entity-type) = "realm"; + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + $var(lrpm) = $sht(rate_limits=>$var(lrpm_realm)); + $var(lrps) = $sht(rate_limits=>$var(lrps_realm)); + } + $var(ltpm) = $sht(rate_limits=>$var(ltpm_realm)); + $var(ltps) = $sht(rate_limits=>$var(ltps_realm)); + + + route(DO_DOS_PREVENTION); + if ( not_empty("$fU") ) { + if ($fd =~ IP_REGEX) { + $var(entity) = $fU+"@"+$td; + xlog("L_WARNING","$ci|RL-device log| Fixup for $rm method with IP in from URI: use to-domain"); + } else { + $var(entity) = $fU+"@"+$fd; + } + $var(entity-type) = "device"; + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + $var(lrpm) = $sht(rate_limits=>$var(lrpm_device)); + $var(lrps) = $sht(rate_limits=>$var(lrps_device)); + } + $var(ltpm) = $sht(rate_limits=>$var(ltpm_device)); + $var(ltps) = $sht(rate_limits=>$var(ltps_device)); + route(DO_DOS_PREVENTION); + } +} + +# This route do counting and decide either to ACCEPT or DECLINE packet +route[DO_DOS_PREVENTION] { + # Personal counters for INVITE and REGISTER + if ((is_method("INVITE") || is_method("REGISTER"))) { + $var(rpm) = $var(entity)+":"+$rm+":min:"+$timef(%Y/%m/%d_%H_%M_00); + $var(rps) = $var(entity)+":"+$rm+":sec:"+$timef(%Y/%m/%d_%H_%M_%S); + } + # Commmon counters for ALL packet including INVITE and REGISTER + $var(tpm) = $var(entity)+":TOTAL:min:"+$timef(%Y/%m/%d_%H_%M_00); + $var(tps) = $var(entity)+":TOTAL:sec:"+$timef(%Y/%m/%d_%H_%M_%S); + + # Personal debug for INVITE and REGISTER + if ((is_method("INVITE") || is_method("REGISTER"))) { + xlog("L_INFO", "$ci|RL-$var(entity-type) log| L/C for $var(rpm) = $var(lrpm)/$sht(rpm=>$var(rpm))"); + xlog("L_INFO", "$ci|RL-$var(entity-type) log| L/C for $var(rps) = $var(lrps)/$sht(rps=>$var(rps))"); + } + # Commmon debug for ALL packet including INVITE and REGISTER + xlog("L_INFO", "$ci|RL-$var(entity-type) log| L/C for $var(tpm) = $var(ltpm)/$sht(tpm=>$var(tpm))"); + xlog("L_INFO", "$ci|RL-$var(entity-type) log| L/C for $var(tps) = $var(ltps)/$sht(tps=>$var(tps))"); + + # Personal increment just for INVITE and REGISTER + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + $sht(rpm=>$var(rpm)) = $shtinc(rpm=>$var(rpm)); + $sht(rps=>$var(rps)) = $shtinc(rps=>$var(rps)); + } + # Commmon increment for ALL packet including INVITE and REGISTER + $sht(tpm=>$var(tpm)) = $shtinc(tpm=>$var(tpm)); + $sht(tps=>$var(tps)) = $shtinc(tps=>$var(tps)); + + # Personal checks for INVITE and REGISTER + if ((is_method("INVITE") || is_method("REGISTER")) && (!isflagset(FLAG_IS_REPLY))) { + if ($sht(rps=>$var(rps)) > $var(lrps)) { + sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE); + xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of $rm $var(rps) rate limits: $sht(rps=>$var(rps)) > $var(lrps))"); + exit; + } + if ($sht(rpm=>$var(rpm)) > $var(lrpm)) { + sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE); + xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of $rm $var(rpm) rate limits: $sht(rpm=>$var(rpm)) > $var(lrpm))"); + exit; + } + } + # Commmon checks for ALL packet including INVITE and REGISTER + if ($sht(tps=>$var(tps)) > $var(ltps)) { + if (isflagset(FLAG_IS_REPLY)) { + xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm::$rs $rr) $var(tps) rate limits: $sht(tps=>$var(tps)) > $var(ltps))"); + } else { + sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE); + xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm) $var(tps) rate limits: $sht(tps=>$var(tps)) > $var(ltps))"); + } + exit; + } + if ($sht(tpm=>$var(tpm)) > $var(ltpm)) { + if (isflagset(FLAG_IS_REPLY)) { + xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm::$rs $rr) $var(tpm) rate limits: $sht(tpm=>$var(tpm)) > $var(ltpm))"); + } else { + sl_send_reply(RATE_LIMIT_CODE, RATE_LIMIT_MESSAGE); + xlog("L_INFO", "$ci|RL-$var(entity-type) log| Out of TOTAL($rm) $var(tpm) rate limits: $sht(tpm=>$var(tpm)) > $var(ltpm))"); + } + exit; + } +}