/*
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2005-2021, Anthony Minessale II <anthm@freeswitch.org>
 *
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 *
 * The Initial Developer of the Original Code is
 * Anthony Minessale II <anthm@freeswitch.org>
 * Portions created by the Initial Developer are Copyright (C)
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Anthony Minessale II <anthm@freeswitch.org>
 * Ken Rice, <krice at freeswitch.org>  (work sponsored by Comet Signaling LLC, CopperCom, Inc and Asteria Solutions Group, Inc)
 * Paul D. Tinsley <pdt at jackhammer.org>
 * Bret McDanel <trixter AT 0xdecafbad.com>
 * Marcel Barbulescu <marcelbarbulescu@gmail.com>
 * David Knell <david.knell@telng.com>
 * Eliot Gable <egable AT.AT broadvox.com>
 * Leon de Rooij <leon@scarlet-internet.nl>
 * Emmanuel Schmidbauer <e.schmidbauer@gmail.com>
 * William King <william.king@quentustech.com>
 *
 * sofia_reg.c -- SOFIA SIP Endpoint (registration code)
 *
 */
#include "mod_sofia.h"
#include "sofia-sip/hostdomain.h"
#include "sip-dig.h"
/* This include defines OPENSSL_VERSION_NUMBER required for SHA-512-256 (RFC-8760)
   Do NOT remove this line even if mod_sofia builds without it. 
*/
#include "switch_ssl.h"

static void sofia_reg_new_handle(sofia_gateway_t *gateway_ptr, int attach)
{
	int ss_state = nua_callstate_authenticating;

	if (gateway_ptr->nh) {
		nua_handle_bind(gateway_ptr->nh, NULL);
		nua_handle_destroy(gateway_ptr->nh);
		gateway_ptr->nh = NULL;
		sofia_private_free(gateway_ptr->sofia_private);
	}

	gateway_ptr->nh = nua_handle(gateway_ptr->profile->nua, NULL,
								 SIPTAG_CALL_ID_STR(gateway_ptr->uuid_str),
								 SIPTAG_TO_STR(gateway_ptr->register_to),
								 NUTAG_CALLSTATE_REF(ss_state), SIPTAG_FROM_STR(gateway_ptr->register_from), TAG_END());
	if (attach) {
		if (!gateway_ptr->sofia_private) {
			switch_zmalloc(gateway_ptr->sofia_private, sizeof(*gateway_ptr->sofia_private));
		}

		switch_set_string(gateway_ptr->sofia_private->gateway_name, gateway_ptr->name);
		nua_handle_bind(gateway_ptr->nh, gateway_ptr->sofia_private);
	}
}

static void sofia_reg_new_sub_handle(sofia_gateway_subscription_t *gw_sub_ptr)
{
	sofia_gateway_t *gateway_ptr = gw_sub_ptr->gateway;
	char *user_via = NULL;
	char *register_host = sofia_glue_get_register_host(gateway_ptr->register_proxy);
	int ss_state = nua_callstate_authenticating;


	/* check for NAT and place a Via header if necessary (hostname or non-local IP) */
	if (register_host && sofia_glue_check_nat(gateway_ptr->profile, register_host)) {
		user_via = sofia_glue_create_external_via(NULL, gateway_ptr->profile, gateway_ptr->register_transport);
	}

	if (gw_sub_ptr->nh) {
		nua_handle_bind(gw_sub_ptr->nh, NULL);
		nua_handle_destroy(gw_sub_ptr->nh);
		gw_sub_ptr->nh = NULL;
		sofia_private_free(gw_sub_ptr->sofia_private);
	}

	gw_sub_ptr->nh = nua_handle(gateway_ptr->profile->nua, NULL,
									 NUTAG_URL(gateway_ptr->register_proxy),
									 TAG_IF(user_via, SIPTAG_VIA_STR(user_via)),
									 SIPTAG_TO_STR(gateway_ptr->register_to),
									 NUTAG_CALLSTATE_REF(ss_state), SIPTAG_FROM_STR(gateway_ptr->register_from), TAG_END());
	if (!gw_sub_ptr->sofia_private) {
		switch_zmalloc(gw_sub_ptr->sofia_private, sizeof(*gw_sub_ptr->sofia_private));
	}

	switch_set_string(gw_sub_ptr->sofia_private->gateway_name, gateway_ptr->name);
	nua_handle_bind(gw_sub_ptr->nh, gw_sub_ptr->sofia_private);

	switch_safe_free(register_host);
	switch_safe_free(user_via);
}

static void sofia_reg_kill_sub(sofia_gateway_subscription_t *gw_sub_ptr)
{
	sofia_gateway_t *gateway_ptr = gw_sub_ptr->gateway;

	sofia_private_free(gw_sub_ptr->sofia_private);

	if (gw_sub_ptr->nh) {
		nua_handle_bind(gw_sub_ptr->nh, NULL);
	}

	if (gw_sub_ptr->state != SUB_STATE_SUBED && gw_sub_ptr->state != SUB_STATE_UNSUBSCRIBE) {
		if (gw_sub_ptr->nh) {
			nua_handle_destroy(gw_sub_ptr->nh);
			gw_sub_ptr->nh = NULL;
		}
		return;
	}

	if (gw_sub_ptr->nh) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "UN-Subbing %s %s\n", gateway_ptr->name, gw_sub_ptr->event);
		nua_unsubscribe(gw_sub_ptr->nh, NUTAG_URL(gw_sub_ptr->request_uri), TAG_END());
	}
}

static void sofia_reg_kill_reg(sofia_gateway_t *gateway_ptr)
{

	if (!gateway_ptr->nh) {
		return;
	}

	if (gateway_ptr->state == REG_STATE_REGED || gateway_ptr->state == REG_STATE_UNREGISTER) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "UN-Registering %s\n", gateway_ptr->name);
		nua_unregister(gateway_ptr->nh, NUTAG_URL(gateway_ptr->register_url), NUTAG_REGISTRAR(gateway_ptr->register_proxy), TAG_END());
	} else {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Destroying registration handle for %s\n", gateway_ptr->name);
	}

	sofia_private_free(gateway_ptr->sofia_private);
	nua_handle_bind(gateway_ptr->nh, NULL);
	nua_handle_destroy(gateway_ptr->nh);
	gateway_ptr->nh = NULL;
}

void sofia_reg_fire_custom_gateway_state_event(sofia_gateway_t *gateway, int status, const char *phrase)
{
	switch_event_t *s_event;
	if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_GATEWAY_STATE) == SWITCH_STATUS_SUCCESS) {
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Gateway", gateway->name);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "State", sofia_state_string(gateway->state));
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Ping-Status", sofia_gateway_status_name(gateway->status));
		if (!zstr_buf(gateway->register_network_ip)) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Register-Network-IP", gateway->register_network_ip);
			switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "Register-Network-Port", "%d", gateway->register_network_port);
		}

		if (!zstr(phrase)) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Phrase", phrase);
		}
		if (status) {
			switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "Status", "%d", status);
		}
		switch_event_fire(&s_event);
	}
}

void sofia_reg_fire_custom_sip_user_state_event(sofia_profile_t *profile, const char *sip_user, const char *contact,
							const char* from_user, const char* from_host, const char *call_id, sofia_sip_user_status_t status, int options_res, const char *phrase)
{
	switch_event_t *s_event;
	if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_SIP_USER_STATE) == SWITCH_STATUS_SUCCESS) {
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "sip_contact", contact);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "sip_user", sip_user);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-user", from_user);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-host", from_host);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "call-id", call_id);
		switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Ping-Status", sofia_sip_user_status_name(status));
		switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "Status", "%d", options_res);
		if (!zstr(phrase)) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Phrase", phrase);
		}
		switch_event_fire(&s_event);
	}
}

void sofia_reg_unregister(sofia_profile_t *profile)
{
	sofia_gateway_t *gateway_ptr;
	sofia_gateway_subscription_t *gw_sub_ptr;

	switch_mutex_lock(mod_sofia_globals.hash_mutex);
	for (gateway_ptr = profile->gateways; gateway_ptr; gateway_ptr = gateway_ptr->next) {

		if (gateway_ptr->nh) {
			nua_handle_bind(gateway_ptr->nh, NULL);
		}

		if (gateway_ptr->state == REG_STATE_REGED) {
			sofia_reg_kill_reg(gateway_ptr);
		}
		sofia_private_free(gateway_ptr->sofia_private);

		for (gw_sub_ptr = gateway_ptr->subscriptions; gw_sub_ptr; gw_sub_ptr = gw_sub_ptr->next) {

			if (gw_sub_ptr->state == SUB_STATE_SUBED) {
				sofia_reg_kill_sub(gw_sub_ptr);
			}
			sofia_private_free(gw_sub_ptr->sofia_private);
		}

		gateway_ptr->subscriptions = NULL;
	}
	switch_mutex_unlock(mod_sofia_globals.hash_mutex);
}

void sofia_sub_check_gateway(sofia_profile_t *profile, time_t now)
{
	/* NOTE: A lot of the mechanism in place here for refreshing subscriptions is
	 * pretty much redundant, as the sofia stack takes it upon itself to
	 * refresh subscriptions on its own, based on the value of the Expires
	 * header (which we control in the outgoing subscription request)
	 */
	sofia_gateway_t *gateway_ptr;

	switch_mutex_lock(profile->gw_mutex);
	for (gateway_ptr = profile->gateways; gateway_ptr; gateway_ptr = gateway_ptr->next) {
		sofia_gateway_subscription_t *gw_sub_ptr;

		for (gw_sub_ptr = gateway_ptr->subscriptions; gw_sub_ptr; gw_sub_ptr = gw_sub_ptr->next) {
			sub_state_t ostate = gw_sub_ptr->state;

			if (!now) {
				gw_sub_ptr->state = ostate = SUB_STATE_UNSUBED;
				gw_sub_ptr->expires_str = "0";
			}

			//gateway_ptr->sub_state = gw_sub_ptr->state;

			switch (ostate) {
			case SUB_STATE_NOSUB:
				break;
			case SUB_STATE_SUBSCRIBE:
				gw_sub_ptr->expires = now + gw_sub_ptr->freq;
				gw_sub_ptr->state = SUB_STATE_SUBED;
				break;
			case SUB_STATE_UNSUBSCRIBE:
				gw_sub_ptr->state = SUB_STATE_NOSUB;
				sofia_reg_kill_sub(gw_sub_ptr);
				break;
			case SUB_STATE_UNSUBED:

				sofia_reg_new_sub_handle(gw_sub_ptr);

				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "subscribing to [%s] on gateway [%s]\n", gw_sub_ptr->event, gateway_ptr->name);

				if (now) {
					nua_subscribe(gw_sub_ptr->nh,
								  NUTAG_URL(gw_sub_ptr->request_uri),
								  SIPTAG_EVENT_STR(gw_sub_ptr->event),
								  TAG_IF(strcmp(gw_sub_ptr->content_type, "NO_CONTENT_TYPE"), SIPTAG_ACCEPT_STR(gw_sub_ptr->content_type)),
								  SIPTAG_TO_STR(gateway_ptr->register_from),
								  SIPTAG_FROM_STR(gateway_ptr->register_from),
								  SIPTAG_CONTACT_STR(gateway_ptr->register_contact),
								  SIPTAG_EXPIRES_STR(gw_sub_ptr->expires_str),	/* sofia stack bases its auto-refresh stuff on this */
								  TAG_NULL());
					gw_sub_ptr->retry = now + gw_sub_ptr->retry_seconds;
				} else {
					nua_unsubscribe(gw_sub_ptr->nh,
									NUTAG_URL(gw_sub_ptr->request_uri),
									SIPTAG_EVENT_STR(gw_sub_ptr->event),
									TAG_IF(strcmp(gw_sub_ptr->content_type, "NO_CONTENT_TYPE"), SIPTAG_ACCEPT_STR(gw_sub_ptr->content_type)),
									SIPTAG_FROM_STR(gateway_ptr->register_from),
									SIPTAG_TO_STR(gateway_ptr->register_from),
									SIPTAG_CONTACT_STR(gateway_ptr->register_contact), SIPTAG_EXPIRES_STR(gw_sub_ptr->expires_str), TAG_NULL());
				}
				gw_sub_ptr->state = SUB_STATE_TRYING;
				break;

			case SUB_STATE_FAILED:
				gw_sub_ptr->expires = now;
				gw_sub_ptr->retry = now + gw_sub_ptr->retry_seconds;
				gw_sub_ptr->state = SUB_STATE_FAIL_WAIT;
				break;
			case SUB_STATE_FAIL_WAIT:
				if (!gw_sub_ptr->retry || now >= gw_sub_ptr->retry) {
					gw_sub_ptr->state = SUB_STATE_UNSUBED;
				}
				break;
			case SUB_STATE_TRYING:
				if (gw_sub_ptr->retry && now >= gw_sub_ptr->retry) {
					gw_sub_ptr->state = SUB_STATE_UNSUBED;
					gw_sub_ptr->retry = 0;
				}
				break;
			default:
				if (now >= gw_sub_ptr->expires) {
					gw_sub_ptr->state = SUB_STATE_UNSUBED;
				}
				break;
			}

		}
	}
	switch_mutex_unlock(profile->gw_mutex);
}

void sofia_reg_check_gateway(sofia_profile_t *profile, time_t now)
{
	sofia_gateway_t *check, *gateway_ptr, *last = NULL;
	switch_event_t *event;
	int delta = 0;

	switch_mutex_lock(profile->gw_mutex);
	for (gateway_ptr = profile->gateways; gateway_ptr; gateway_ptr = gateway_ptr->next) {
		if (gateway_ptr->deleted) {
			if ((check = switch_core_hash_find(mod_sofia_globals.gateway_hash, gateway_ptr->name)) && check == gateway_ptr) {
				char *pkey = switch_mprintf("%s::%s", profile->name, gateway_ptr->name);
				switch_assert(pkey);
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Removing gateway %s from hash.\n", pkey);
				switch_core_hash_delete(mod_sofia_globals.gateway_hash, pkey);
				switch_core_hash_delete(mod_sofia_globals.gateway_hash, gateway_ptr->name);
				free(pkey);
			}

			if (gateway_ptr->state == REG_STATE_NOREG || gateway_ptr->state == REG_STATE_DOWN) {

				if (last) {
					last->next = gateway_ptr->next;
				} else {
					profile->gateways = gateway_ptr->next;
				}

				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Deleted gateway %s\n", gateway_ptr->name);
				if (switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, MY_EVENT_GATEWAY_DEL) == SWITCH_STATUS_SUCCESS) {
					switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "profile-name", gateway_ptr->profile->name);
					switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Gateway", gateway_ptr->name);
					switch_event_fire(&event);
				}
				if (gateway_ptr->ob_vars) {
					switch_event_destroy(&gateway_ptr->ob_vars);
				}
				if (gateway_ptr->ib_vars) {
					switch_event_destroy(&gateway_ptr->ib_vars);
				}
			} else {
				last = gateway_ptr;
			}
		} else {
			last = gateway_ptr;
		}
	}

	for (gateway_ptr = profile->gateways; gateway_ptr; gateway_ptr = gateway_ptr->next) {
		reg_state_t ostate = gateway_ptr->state;
		char *user_via = NULL;
		char *register_host = NULL;

		if (!now && ostate != REG_STATE_NOREG) {
			gateway_ptr->state = ostate = REG_STATE_UNREGED;
			gateway_ptr->expires_str = "0";
		}

		if (gateway_ptr->ping && !gateway_ptr->pinging && (now >= gateway_ptr->ping && (ostate == REG_STATE_NOREG || ostate == REG_STATE_REGED)) &&
			!gateway_ptr->deleted) {
			nua_handle_t *nh = nua_handle(profile->nua, NULL, NUTAG_URL(gateway_ptr->register_url), TAG_END());
			sofia_private_t *pvt;

			register_host = sofia_glue_get_register_host(gateway_ptr->register_proxy);

			/* check for NAT and place a Via header if necessary (hostname or non-local IP) */
			if (register_host && sofia_glue_check_nat(gateway_ptr->profile, register_host)) {
				user_via = sofia_glue_create_external_via(NULL, gateway_ptr->profile, gateway_ptr->register_transport);
			}

			switch_safe_free(register_host);

			pvt = malloc(sizeof(*pvt));
			switch_assert(pvt);
			memset(pvt, 0, sizeof(*pvt));
			pvt->destroy_nh = 1;
			pvt->destroy_me = 1;
			switch_copy_string(pvt->gateway_name, gateway_ptr->name, sizeof(pvt->gateway_name));
			nua_handle_bind(nh, pvt);

			gateway_ptr->pinging = 1;
			gateway_ptr->ping_sent = switch_time_now();
			nua_options(nh,
						TAG_IF(gateway_ptr->register_sticky_proxy, NUTAG_PROXY(gateway_ptr->register_sticky_proxy)),
						TAG_IF(user_via, SIPTAG_VIA_STR(user_via)),
						SIPTAG_TO_STR(gateway_ptr->options_to_uri), SIPTAG_FROM_STR(gateway_ptr->options_from_uri),
						TAG_IF(gateway_ptr->contact_in_ping, SIPTAG_CONTACT_STR(gateway_ptr->register_contact)),
						TAG_IF(gateway_ptr->options_user_agent, SIPTAG_USER_AGENT_STR(gateway_ptr->options_user_agent)),
						TAG_END());

			switch_safe_free(user_via);
			user_via = NULL;
		}

		switch (ostate) {
		case REG_STATE_DOWN:
		case REG_STATE_NOREG:
			if (!gateway_ptr->ping && !gateway_ptr->pinging && gateway_ptr->status != SOFIA_GATEWAY_UP) {
				gateway_ptr->status = SOFIA_GATEWAY_UP;
				gateway_ptr->uptime = switch_time_now();
			}
			break;
		case REG_STATE_REGISTER:
			if (profile->debug) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Registered %s\n", gateway_ptr->name);
			}

			gateway_ptr->failures = 0;

			if (gateway_ptr->freq > 30) {
				delta = (gateway_ptr->freq - 15);
			} else {
				delta = (gateway_ptr->freq / 2);
			}

			if (delta < 1) {
				delta = 1;
			}

			gateway_ptr->expires = now + delta;

			gateway_ptr->state = REG_STATE_REGED;
			if (gateway_ptr->status != SOFIA_GATEWAY_UP) {
				gateway_ptr->status = SOFIA_GATEWAY_UP;
				gateway_ptr->uptime = switch_time_now();
			}
			break;

		case REG_STATE_UNREGISTER:
			sofia_reg_kill_reg(gateway_ptr);
			gateway_ptr->state = REG_STATE_DOWN;
			gateway_ptr->status = SOFIA_GATEWAY_DOWN;
			break;
		case REG_STATE_UNREGED:
			gateway_ptr->retry = 0;

			if (!gateway_ptr->nh) {
				sofia_reg_new_handle(gateway_ptr, now ? 1 : 0);
			}

			register_host = sofia_glue_get_register_host(gateway_ptr->register_proxy);

			/* check for NAT and place a Via header if necessary (hostname or non-local IP) */
			if (register_host && sofia_glue_check_nat(gateway_ptr->profile, register_host)) {
				user_via = sofia_glue_create_external_via(NULL, gateway_ptr->profile, gateway_ptr->register_transport);
			}

			switch_safe_free(register_host);

			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Registering %s\n", gateway_ptr->name);

			if (now) {
				nua_register(gateway_ptr->nh,
							 NUTAG_URL(gateway_ptr->register_url),
							 TAG_IF(gateway_ptr->register_sticky_proxy, NUTAG_PROXY(gateway_ptr->register_sticky_proxy)),
							 TAG_IF(user_via, SIPTAG_VIA_STR(user_via)),
							 SIPTAG_TO_STR(gateway_ptr->distinct_to ? gateway_ptr->register_to : gateway_ptr->register_from),
							 SIPTAG_CONTACT_STR(gateway_ptr->register_contact),
							 SIPTAG_FROM_STR(gateway_ptr->register_from),
							 SIPTAG_EXPIRES_STR(gateway_ptr->expires_str),
							 NUTAG_REGISTRAR(gateway_ptr->register_proxy),
							 NUTAG_OUTBOUND("no-options-keepalive"), NUTAG_OUTBOUND("no-validate"), NUTAG_KEEPALIVE(0), TAG_NULL());
				gateway_ptr->retry = now + gateway_ptr->retry_seconds;
			} else {
				gateway_ptr->status = SOFIA_GATEWAY_DOWN;
				nua_unregister(gateway_ptr->nh,
							   NUTAG_URL(gateway_ptr->register_url),
							   TAG_IF(gateway_ptr->register_sticky_proxy, NUTAG_PROXY(gateway_ptr->register_sticky_proxy)),
							   TAG_IF(user_via, SIPTAG_VIA_STR(user_via)),
							   SIPTAG_FROM_STR(gateway_ptr->register_from),
							   SIPTAG_TO_STR(gateway_ptr->distinct_to ? gateway_ptr->register_to : gateway_ptr->register_from),
							   SIPTAG_EXPIRES_STR(gateway_ptr->expires_str),
							   NUTAG_REGISTRAR(gateway_ptr->register_proxy),
							   NUTAG_OUTBOUND("no-options-keepalive"), NUTAG_OUTBOUND("no-validate"), NUTAG_KEEPALIVE(0), TAG_NULL());
			}
			gateway_ptr->reg_timeout = now + gateway_ptr->reg_timeout_seconds;
			gateway_ptr->state = REG_STATE_TRYING;
			switch_safe_free(user_via);
			user_via = NULL;
			break;

		case REG_STATE_TIMEOUT:
			{
				nua_handle_t *nh = gateway_ptr->nh;

				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Timeout Registering %s\n", gateway_ptr->name);

				gateway_ptr->nh = NULL;
				nua_handle_destroy(nh);
				gateway_ptr->state = REG_STATE_FAILED;
				gateway_ptr->failures++;
				gateway_ptr->failure_status = 908;
			}
			break;
		case REG_STATE_FAILED:
			{
				int sec;

				if (gateway_ptr->fail_908_retry_seconds && gateway_ptr->failure_status == 908) {
					sec = gateway_ptr->fail_908_retry_seconds;
				} else if (gateway_ptr->failure_status == 503 || gateway_ptr->failure_status == 908 || gateway_ptr->failures < 1) {
					sec = gateway_ptr->retry_seconds;
				} else {
					sec = gateway_ptr->retry_seconds * gateway_ptr->failures;
				}

				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "%s Failed Registration [%d], setting retry to %d seconds.\n",
								  gateway_ptr->name, gateway_ptr->failure_status, sec);

				gateway_ptr->retry = switch_epoch_time_now(NULL) + sec;
				gateway_ptr->status = SOFIA_GATEWAY_DOWN;
				gateway_ptr->state = REG_STATE_FAIL_WAIT;
				gateway_ptr->failure_status = 0;

			}
			break;
		case REG_STATE_FAIL_WAIT:
			if (!gateway_ptr->retry || now >= gateway_ptr->retry) {
				gateway_ptr->state = REG_STATE_UNREGED;
			}
			break;
		case REG_STATE_TRYING:
			if (now >= gateway_ptr->reg_timeout) {
				gateway_ptr->state = REG_STATE_TIMEOUT;
			}
			break;
		default:
			if (now >= gateway_ptr->expires) {
				gateway_ptr->state = REG_STATE_UNREGED;
			}
			break;
		}
		if (ostate != gateway_ptr->state) {
			sofia_reg_fire_custom_gateway_state_event(gateway_ptr, 0, NULL);
		}
	}
	switch_mutex_unlock(profile->gw_mutex);
}


int sofia_reg_find_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	struct callback_t *cbt = (struct callback_t *) pArg;

	if (!cbt->len) {
		switch_console_push_match(&cbt->list, argv[0]);
		cbt->matches++;
		return 0;
	}

	switch_copy_string(cbt->val, argv[0], cbt->len);
	cbt->matches++;
	return cbt->matches == 1 ? 0 : 1;
}


int sofia_reg_find_reg_with_positive_expires_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	struct callback_t *cbt = (struct callback_t *) pArg;
	sofia_destination_t *dst = NULL;
	long int expires;
	char *contact = NULL;

	if (zstr(argv[0])) {
		return 0;
	}

	if (cbt->contact_str && !strcasecmp(argv[0], cbt->contact_str)) {
		expires = cbt->exptime;
	} else {
		expires = atol(argv[1]) - 60 - (long) cbt->time;
	}

	if (expires > 0) {
		dst = sofia_glue_get_destination(argv[0]);
		contact = switch_mprintf("<%s>;expires=%ld", dst->contact, expires);

		if (!cbt->len) {
			switch_console_push_match(&cbt->list, contact);
			switch_safe_free(contact);
			sofia_glue_free_destination(dst);
			cbt->matches++;
			return 0;
		}

		switch_copy_string(cbt->val, contact, cbt->len);
		switch_safe_free(contact);
		sofia_glue_free_destination(dst);
		cbt->matches++;
		return cbt->matches == 1 ? 0 : 1;
	}

	return 0;
}


int sofia_reg_nat_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	sofia_profile_t *profile = (sofia_profile_t *) pArg;
	nua_handle_t *nh;
	char to[512] = "", call_id[512] = "";
	sofia_destination_t *dst = NULL;
	switch_uuid_t uuid;
	sofia_private_t *pvt;

	switch_snprintf(to, sizeof(to), "sip:%s@%s", argv[1], argv[2]);

	// create call-id for OPTIONS in the form "<uuid>_<original-register-call-id>"
	switch_uuid_get(&uuid);
	switch_uuid_format(call_id, &uuid);
	strcat(call_id, "_");
	strncat(call_id, argv[0], sizeof(call_id) - SWITCH_UUID_FORMATTED_LENGTH - 2);

	dst = sofia_glue_get_destination(argv[3]);
	switch_assert(dst);

	nh = nua_handle(profile->nua, NULL, SIPTAG_FROM_STR(profile->url), SIPTAG_TO_STR(to), NUTAG_URL(dst->contact), SIPTAG_CONTACT_STR(profile->url),
					SIPTAG_CALL_ID_STR(call_id), TAG_END());

	pvt = malloc(sizeof(*pvt));
	switch_assert(pvt);
	memset(pvt, 0, sizeof(*pvt));
	pvt->destroy_nh = 1;
	pvt->destroy_me = 1;
	pvt->ping_sent = switch_time_now();
	nua_handle_bind(nh, pvt);

	nua_options(nh,
				NTATAG_SIP_T2(5000),
				NTATAG_SIP_T4(10000),
				TAG_IF(dst->route_uri, NUTAG_PROXY(dst->route_uri)), TAG_IF(dst->route, SIPTAG_ROUTE_STR(dst->route)), TAG_END());

	sofia_glue_free_destination(dst);

	return 0;
}


void sofia_reg_send_reboot(sofia_profile_t *profile, const char *callid, const char *user, const char *host, const char *contact, const char *user_agent,
						   const char *network_ip)
{
	const char *event = "check-sync";
	const char *contenttype = "application/simple-message-summary";
	char *body = NULL;

	if (switch_stristr("snom", user_agent) || switch_stristr("yealink", user_agent)) {
		event = "check-sync;reboot=true";
	} else if (switch_stristr("Linksys/SPA8000", user_agent)) {
		event = "check-sync";
	} else if (switch_stristr("linksys", user_agent)) {
		event = "reboot_now";
	} else if (switch_stristr("spa", user_agent)) {
		event = "reboot";
	} else if (switch_stristr("Cisco-CP7960G", user_agent) || switch_stristr("Cisco-CP7940G", user_agent)) {
		event = "check-sync";
	} else if (switch_stristr("cisco", user_agent)) {
		event = "service-control";
		contenttype = "text/plain";
		body = switch_mprintf("action=restart\n"
							  "RegisterCallId={%s}\n"
							  "ConfigVersionStamp={0000000000000000}\n"
							  "DialplanVersionStamp={0000000000000000}\n"
							  "SoftkeyVersionStamp={0000000000000000}", callid);
	}

	sofia_glue_send_notify(profile, user, host, event, contenttype, body ? body : "", contact, network_ip, callid);

	switch_safe_free(body);
}

int sofia_sla_dialog_del_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	sofia_profile_t *profile = (sofia_profile_t *) pArg;
	nua_handle_t *nh = NULL;

	if ((nh = nua_handle_by_call_id(profile->nua, argv[0]))) {
		nua_handle_destroy(nh);
	}

	return 0;
}

void sofia_reg_check_socket(sofia_profile_t *profile, const char *call_id, const char *network_addr, const char *network_ip)
{
	char key[256] = "";
	nua_handle_t *hnh;

	switch_snprintf(key, sizeof(key), "%s%s%s", call_id, network_addr, network_ip);
	switch_mutex_lock(profile->flag_mutex);
	if ((hnh = switch_core_hash_find(profile->reg_nh_hash, key))) {
		switch_core_hash_delete(profile->reg_nh_hash, key);
		nua_handle_unref_user(hnh);
		nua_handle_destroy(hnh);
	}
	switch_mutex_unlock(profile->flag_mutex);
}



int sofia_reg_del_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	switch_event_t *s_event;
	sofia_profile_t *profile = (sofia_profile_t *) pArg;

	if (argc > 13 && atoi(argv[13]) == 1) {
		sofia_reg_send_reboot(profile, argv[0], argv[1], argv[2], argv[3], argv[7], argv[11]);
	}

	sofia_reg_check_socket(profile, argv[0], argv[11], argv[12]);


	if (argc >= 3) {
		if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_EXPIRE) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", argv[10]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "call-id", argv[0]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user", argv[1]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "username", argv[1]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "host", argv[2]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "contact", argv[3]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "expires", argv[6]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", argv[7]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "realm", argv[14]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-ip", argv[11]);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-port", argv[12]);
			sofia_event_fire(profile, &s_event);
		}

		if (switch_event_create(&s_event, SWITCH_EVENT_PRESENCE_IN) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "proto", SOFIA_CHAT_PROTO);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "rpid", "away");
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "login", profile->url);

			if (argv[4]) {
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", argv[4]);
			}

			if (argv[1] && argv[2]) {
				switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "from", "%s@%s", argv[1], argv[2]);
			}

			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "status", "Unregistered");
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "event_type", "presence");
			sofia_event_fire(profile, &s_event);
		}

	}
	return 0;
}

void sofia_reg_expire_call_id(sofia_profile_t *profile, const char *call_id, int reboot)
{
	char *sql = NULL;
	char *sqlextra = NULL;
	char *dup = strdup(call_id);
	char *host = NULL, *user = NULL;

	switch_assert(dup);

	if ((host = strchr(dup, '@'))) {
		*host++ = '\0';
		user = dup;
	} else {
		host = dup;
	}

	if (zstr(host)) {
		host = "none";
	}

	if (zstr(user)) {
		sqlextra = switch_mprintf(" or (sip_host='%q')", host);
	} else {
		sqlextra = switch_mprintf(" or (sip_user='%q' and sip_host='%q')", user, host);
	}

	sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,expires"
						 ",user_agent,server_user,server_host,profile_name,network_ip,network_port"
						 ",%d,sip_realm from sip_registrations where call_id='%q' %s", reboot, call_id, sqlextra);


	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_del_callback, profile);
	switch_safe_free(sql);

	sql = switch_mprintf("delete from sip_registrations where call_id='%q' %s", call_id, sqlextra);
	sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

	switch_safe_free(sqlextra);
	switch_safe_free(sql);
	switch_safe_free(dup);

}

void sofia_reg_check_expire(sofia_profile_t *profile, time_t now, int reboot)
{
	char *sql;

	if (now) {
		sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,expires"
						",user_agent,server_user,server_host,profile_name,network_ip, network_port"
						",%d,sip_realm from sip_registrations where expires > 0 and expires <= %ld", reboot, (long) now);
	} else {
		sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,expires"
						",user_agent,server_user,server_host,profile_name,network_ip, network_port" ",%d,sip_realm from sip_registrations where expires > 0", reboot);
	}

	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_del_callback, profile);
	free(sql);

	if (now) {
		sql = switch_mprintf("delete from sip_registrations where expires > 0 and expires <= %ld and hostname='%q'",
						(long) now, mod_sofia_globals.hostname);
	} else {
		sql = switch_mprintf("delete from sip_registrations where expires > 0 and hostname='%q'", mod_sofia_globals.hostname);
	}
	sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);




	if (now) {
		sql = switch_mprintf("select call_id from sip_shared_appearance_dialogs where hostname='%q' "
						"and profile_name='%q' and expires <= %ld", mod_sofia_globals.hostname, profile->name, (long) now);

		sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_sla_dialog_del_callback, profile);
		free(sql);

		sql = switch_mprintf("delete from sip_shared_appearance_dialogs where expires > 0 and hostname='%q' and expires <= %ld",
						mod_sofia_globals.hostname, (long) now);


		sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);
	}


	if (now) {
		sql = switch_mprintf("delete from sip_presence where expires > 0 and expires <= %ld and hostname='%q'",
						(long) now, mod_sofia_globals.hostname);
	} else {
		sql = switch_mprintf("delete from sip_presence where expires > 0 and hostname='%q'", mod_sofia_globals.hostname);
	}

	sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);

	if (now) {
		sql = switch_mprintf("delete from sip_authentication where expires > 0 and expires <= %ld and hostname='%q'",
						(long) now, mod_sofia_globals.hostname);
	} else {
		sql = switch_mprintf("delete from sip_authentication where expires > 0 and hostname='%q'", mod_sofia_globals.hostname);
	}

	sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);

	sofia_presence_check_subscriptions(profile, now);

	if (now) {
		sql = switch_mprintf("delete from sip_dialogs where (expires = -1 or (expires > 0 and expires <= %ld)) and hostname='%q'",
						(long) now, mod_sofia_globals.hostname);
	} else {
		sql = switch_mprintf("delete from sip_dialogs where expires >= -1 and hostname='%q'", mod_sofia_globals.hostname);
	}

	sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);

}

long sofia_reg_uniform_distribution(int max)
{
/*
 * Generate a random number following a uniform distribution between 0 and max
 */
	int result;
	int range = max + 1;

	result = (int)((double)rand() / (((double)RAND_MAX + (double)1) / range));

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Generated random %ld, max is %d\n", (long) result, max);
	return (long) result;
}

void sofia_reg_check_ping_expire(sofia_profile_t *profile, time_t now, int interval)
{
	char *sql;
	long next;
	char buf[32] = "";
	int count;

	if (now) {
		if (sofia_test_pflag(profile, PFLAG_ALL_REG_OPTIONS_PING)) {
			sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,"
								 "expires,user_agent,server_user,server_host,profile_name "
								 "from sip_registrations where hostname='%q' and "
								 "profile_name='%q' and orig_hostname='%q' and "
								 "ping_expires > 0 and ping_expires <= %ld",
								 mod_sofia_globals.hostname, profile->name, mod_sofia_globals.hostname, (long) now);

			sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_nat_callback, profile);
			switch_safe_free(sql);
		} else if (sofia_test_pflag(profile, PFLAG_UDP_NAT_OPTIONS_PING)) {
			sql = switch_mprintf(" select call_id,sip_user,sip_host,contact,status,rpid, "
								 " expires,user_agent,server_user,server_host,profile_name "
								 " from sip_registrations where (status like '%%UDP-NAT%%' or force_ping=1)"
								 " and hostname='%q' and profile_name='%q' and ping_expires > 0 and ping_expires <= %ld ",
								 mod_sofia_globals.hostname, profile->name, (long) now);

			sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_nat_callback, profile);
			switch_safe_free(sql);
		} else if (sofia_test_pflag(profile, PFLAG_NAT_OPTIONS_PING)) {
			sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,"
								 "expires,user_agent,server_user,server_host,profile_name "
								 "from sip_registrations where (status like '%%NAT%%' "
								 "or contact like '%%fs_nat=yes%%' or force_ping=1) and hostname='%q' "
								 "and profile_name='%q' and orig_hostname='%q' and "
								 "ping_expires > 0 and ping_expires <= %ld",
								 mod_sofia_globals.hostname, profile->name, mod_sofia_globals.hostname, (long) now);

			sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_nat_callback, profile);
			switch_safe_free(sql);
		} else {
			sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,"
								 "expires,user_agent,server_user,server_host,profile_name "
								 "from sip_registrations where force_ping=1 and hostname='%q' "
								 "and profile_name='%q' and orig_hostname='%q' and "
								 "ping_expires > 0 and ping_expires <= %ld",
								 mod_sofia_globals.hostname, profile->name, mod_sofia_globals.hostname, (long) now);

			sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_nat_callback, profile);
			switch_safe_free(sql);
		}

		sql = switch_mprintf("select count(*) from sip_registrations where hostname='%q' and profile_name='%q' and ping_expires <= %ld",
							 mod_sofia_globals.hostname, profile->name, (long) now);

		sofia_glue_execute_sql2str(profile, profile->dbh_mutex, sql, buf, sizeof(buf));
		switch_safe_free(sql);
		count = atoi(buf);

		/* only update if needed */
		if (count) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG9, "Updating ping expires for profile %s\n", profile->name);
			next = (long) now + interval;

			sql = switch_mprintf("update sip_registrations set ping_expires = %ld where hostname='%q' and profile_name='%q' and ping_expires <= %ld ",
								 next, mod_sofia_globals.hostname, profile->name, (long) now);
			sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);
		}
	}
}


int sofia_reg_check_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	sofia_profile_t *profile = (sofia_profile_t *) pArg;

	sofia_reg_send_reboot(profile, argv[0], argv[1], argv[2], argv[3], argv[7], argv[11]);

	return 0;
}

void sofia_reg_check_call_id(sofia_profile_t *profile, const char *call_id)
{
	char *sql = NULL;
	char *sqlextra = NULL;
	char *dup = strdup(call_id);
	char *host = NULL, *user = NULL;

	switch_assert(dup);

	if ((host = strchr(dup, '@'))) {
		*host++ = '\0';
		user = dup;
	} else {
		host = dup;
	}

	if (zstr(host)) {
		host = "none";
	}

	if (zstr(user)) {
		sqlextra = switch_mprintf(" or (sip_host='%q')", host);
	} else {
		sqlextra = switch_mprintf(" or (sip_user='%q' and sip_host='%q')", user, host);
	}

	sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,expires"
						 ",user_agent,server_user,server_host,profile_name,network_ip"
						 " from sip_registrations where call_id='%q' %s", call_id, sqlextra);


	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_check_callback, profile);


	switch_safe_free(sql);
	switch_safe_free(sqlextra);
	switch_safe_free(dup);

}

void sofia_reg_check_sync(sofia_profile_t *profile)
{
	char *sql;

	sql = switch_mprintf("select call_id,sip_user,sip_host,contact,status,rpid,expires"
					",user_agent,server_user,server_host,profile_name,network_ip,network_port,0,sip_realm"
					" from sip_registrations where expires > 0");


	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_del_callback, profile);
	switch_safe_free(sql);

	sql = switch_mprintf("delete from sip_registrations where expires > 0 and hostname='%q'", mod_sofia_globals.hostname);
	sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

	sql = switch_mprintf("delete from sip_presence where expires > 0 and hostname='%q'", mod_sofia_globals.hostname);
	sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

	sql = switch_mprintf("delete from sip_authentication where expires > 0 and hostname='%q'", mod_sofia_globals.hostname);
	sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

	sql = switch_mprintf("delete from sip_subscriptions where expires >= -1 and hostname='%q'", mod_sofia_globals.hostname);
	sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

	sql = switch_mprintf("delete from sip_dialogs where expires >= -1 and hostname='%q'", mod_sofia_globals.hostname);
	sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

}

char *sofia_reg_find_reg_url(sofia_profile_t *profile, const char *user, const char *host, char *val, switch_size_t len)
{
	struct callback_t cbt = { 0 };
	char *sql;

	if (!user) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Called with null user!\n");
		return NULL;
	}

	cbt.val = val;
	cbt.len = len;

	if (host) {
		sql = switch_mprintf("select contact from sip_registrations where sip_user='%q' and (sip_host='%q' or presence_hosts like '%%%q%%')",
						user, host, host);
	} else {
		sql = switch_mprintf("select contact from sip_registrations where sip_user='%q'", user);
	}


	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_find_callback, &cbt);

	switch_safe_free(sql);

	if (cbt.list) {
		switch_console_free_matches(&cbt.list);
	}

	if (cbt.matches) {
		return val;
	} else {
		return NULL;
	}
}


switch_console_callback_match_t *sofia_reg_find_reg_url_multi(sofia_profile_t *profile, const char *user, const char *host)
{
	struct callback_t cbt = { 0 };
	char *sql;

	if (!user) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Called with null user!\n");
		return NULL;
	}

	if (host) {
		sql = switch_mprintf("select contact from sip_registrations where sip_user='%q' and (sip_host='%q' or presence_hosts like '%%%q%%')",
						user, host, host);
	} else {
		sql = switch_mprintf("select contact from sip_registrations where sip_user='%q'", user);
	}


	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_find_callback, &cbt);

	switch_safe_free(sql);

	return cbt.list;
}


switch_console_callback_match_t *sofia_reg_find_reg_url_with_positive_expires_multi(sofia_profile_t *profile, const char *user, const char *host, time_t reg_time, const char *contact_str, long exptime)
{
	struct callback_t cbt = { 0 };
	char *sql;

	if (!user) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Called with null user!\n");
		return NULL;
	}

	if (host) {
		sql = switch_mprintf("select contact,expires from sip_registrations where sip_user='%q' and (sip_host='%q' or presence_hosts like '%%%q%%')",
						user, host, host);
	} else {
		sql = switch_mprintf("select contact,expires from sip_registrations where sip_user='%q'", user);
	}

	cbt.time = reg_time;
	cbt.contact_str = contact_str;
	cbt.exptime = exptime;

	sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_find_reg_with_positive_expires_callback, &cbt);
	free(sql);

	return cbt.list;
}

static char * sofia_alg_to_str(sofia_auth_algs_t alg) 
{
	if (alg == ALG_SHA256) 
		return "SHA-256";
#if OPENSSL_VERSION_NUMBER >= 0x10101000L
	if (alg == ALG_SHA512) 
		return "SHA-512-256";
#endif 
	return "MD5";
}

void sofia_reg_auth_challenge(sofia_profile_t *profile, nua_handle_t *nh, sofia_dispatch_event_t *de,
							  sofia_regtype_t regtype, const char *realm, int stale, long exptime)
{
	switch_uuid_t uuid;
	char uuid_str[SWITCH_UUID_FORMATTED_LENGTH + 1];
	char *sql, *auth_str = NULL; 
	char *auth_str_rfc8760[SOFIA_MAX_REG_ALGS] = {0};
	msg_t *msg = NULL;


	if (de && de->data) {
		msg = de->data->e_msg;
	}

	if (!profile->rfc8760_algs_count) {
		switch_uuid_get(&uuid);
		switch_uuid_format(uuid_str, &uuid);

		sql = switch_mprintf("insert into sip_authentication (nonce,expires,profile_name,hostname, last_nc) "
							 "values('%q', %ld, '%q', '%q', 0)", uuid_str,
							 (long) switch_epoch_time_now(NULL) + (profile->nonce_ttl ? profile->nonce_ttl : DEFAULT_NONCE_TTL) + profile->timer_t1x64 / 1000,
							 profile->name, mod_sofia_globals.hostname);
		switch_assert(sql != NULL);
		sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

		auth_str = switch_mprintf("Digest realm=\"%q\", nonce=\"%q\",%s algorithm=MD5, qop=\"auth\"", realm, uuid_str, stale ? " stale=true," : "");
	} else {
		int i;
		char *sql_build;
		switch_stream_handle_t stream = { 0 };

		SWITCH_STANDARD_STREAM(stream);
		for (i = 0; i < profile->rfc8760_algs_count; i++) {
			switch_uuid_get(&uuid);
			switch_uuid_format(uuid_str, &uuid);
			sql_build = switch_mprintf("insert into sip_authentication (nonce,expires,profile_name,hostname, last_nc, algorithm) "
								 "values('%s', %ld, '%q', '%q', 0, %d)", uuid_str,
								 (long) switch_epoch_time_now(NULL) + (profile->nonce_ttl ? profile->nonce_ttl : DEFAULT_NONCE_TTL) + profile->timer_t1x64 / 1000,
								 profile->name, mod_sofia_globals.hostname, profile->auth_algs[i]);

			auth_str_rfc8760[i] = switch_mprintf("Digest realm=\"%q\", nonce=\"%q\",%s algorithm=%s, qop=\"auth\"", realm, uuid_str, stale ? " stale=true," : "", sofia_alg_to_str(profile->auth_algs[i]));
			stream.write_function(&stream, "%s%s", i ? ";" : "", sql_build);
			switch_safe_free(sql_build);
		}
		sofia_glue_execute_sql_now(profile, (char **)&stream.data, SWITCH_TRUE);
	}

	if (regtype == REG_REGISTER) {
		if (!profile->rfc8760_algs_count) {
			nua_respond(nh, SIP_401_UNAUTHORIZED, TAG_IF(msg, NUTAG_WITH_THIS_MSG(msg)), SIPTAG_WWW_AUTHENTICATE_STR(auth_str), TAG_END());
		} else {
			int i;
			nua_respond(nh, SIP_401_UNAUTHORIZED, TAG_IF(msg, NUTAG_WITH_THIS_MSG(msg)), 
					TAG_IF(auth_str_rfc8760[0], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[0])), TAG_IF(auth_str_rfc8760[1], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[1])),
					TAG_IF(auth_str_rfc8760[2], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[2])), TAG_IF(auth_str_rfc8760[3], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[3])),
					TAG_IF(auth_str_rfc8760[4], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[4])), TAG_IF(auth_str_rfc8760[5], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[5])),
					TAG_IF(auth_str_rfc8760[6], SIPTAG_WWW_AUTHENTICATE_STR(auth_str_rfc8760[6])), TAG_END());
			for (i = 0 ; i < profile->rfc8760_algs_count; i++) {
				switch_safe_free(auth_str_rfc8760[i]);
			}
		}
	} else if (regtype == REG_INVITE) {
		if (!profile->rfc8760_algs_count) {
			nua_respond(nh, SIP_407_PROXY_AUTH_REQUIRED,
						TAG_IF(msg, NUTAG_WITH_THIS_MSG(msg)),
						SIPTAG_PROXY_AUTHENTICATE_STR(auth_str), TAG_END());
		} else {
			int i;
			nua_respond(nh, SIP_407_PROXY_AUTH_REQUIRED,
					TAG_IF(msg, NUTAG_WITH_THIS_MSG(msg)),
					TAG_IF(auth_str_rfc8760[0], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[0])), 
					TAG_IF(auth_str_rfc8760[1], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[1])), 
					TAG_IF(auth_str_rfc8760[2], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[2])), 
					TAG_IF(auth_str_rfc8760[3], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[3])), 
					TAG_IF(auth_str_rfc8760[4], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[4])), 
					TAG_IF(auth_str_rfc8760[5], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[5])), 
					TAG_IF(auth_str_rfc8760[6], SIPTAG_PROXY_AUTHENTICATE_STR(auth_str_rfc8760[6])), 
					TAG_END());
			for (i = 0 ; i < profile->rfc8760_algs_count; i++) {
				switch_safe_free(auth_str_rfc8760[i]);
			}
		}

	}

	switch_safe_free(auth_str);
}

uint32_t sofia_reg_reg_count(sofia_profile_t *profile, const char *user, const char *host)
{
	char buf[32] = "";
	char *sql;

	sql = switch_mprintf("select count(*) from sip_registrations where profile_name='%q' and "
						 "sip_user='%q' and (sip_host='%q' or presence_hosts like '%%%q%%')", profile->name, user, host, host);

	sofia_glue_execute_sql2str(profile, profile->dbh_mutex, sql, buf, sizeof(buf));
	switch_safe_free(sql);
	return atoi(buf);
}

static int debounce_check(sofia_profile_t *profile, const char *user, const char *host)
{
	char key[512] = "";
	int r = 0;
	time_t *last, now = switch_epoch_time_now(NULL);

	snprintf(key, sizeof(key)-1, "%s%s", user, host);
	key[sizeof(key)-1] = '\0';

	switch_mutex_lock(profile->ireg_mutex);
	if ((last = switch_core_hash_find(profile->mwi_debounce_hash, key))) {
		if (now - *last > 30) {
			*last = now;
			r = 1;
		}
	} else {
		last = switch_core_alloc(profile->pool, sizeof(*last));
		*last = now;

		switch_core_hash_insert(profile->mwi_debounce_hash, key, last);
		r = 1;
	}
	switch_mutex_unlock(profile->ireg_mutex);

	return r;
}

void sofia_reg_close_handles(sofia_profile_t *profile)
{
	nua_handle_t *nh = NULL;
	switch_hash_index_t *hi = NULL;
	const void *var;
	void *val;


	switch_mutex_lock(profile->flag_mutex);
	if (profile->reg_nh_hash) {
	top:
		for (hi = switch_core_hash_first_iter( profile->reg_nh_hash, hi); hi; hi = switch_core_hash_next(&hi)) {
			switch_core_hash_this(hi, &var, NULL, &val);
			if ((nh = (nua_handle_t *) val)) {
				nua_handle_unref_user(nh);
				nua_handle_destroy(nh);
				switch_core_hash_delete(profile->reg_nh_hash, (char *) var);
				goto top;
			}
		}
		switch_safe_free(hi);

	}
	switch_mutex_unlock(profile->flag_mutex);

	return;

}


uint8_t sofia_reg_handle_register_token(nua_t *nua, sofia_profile_t *profile, nua_handle_t *nh, sip_t const *sip,
								sofia_dispatch_event_t *de, sofia_regtype_t regtype, char *key,
								  uint32_t keylen, switch_event_t **v_event, const char *is_nat, sofia_private_t **sofia_private_p, switch_xml_t *user_xml, const char *sw_acl_token)
{
	sip_to_t const *to = NULL;
	sip_from_t const *from = NULL;
	sip_expires_t const *expires = NULL;
	sip_authorization_t const *authorization = NULL;
	sip_contact_t const *contact = NULL;
	char *sql;
	switch_event_t *s_event;
	const char *reg_meta = NULL;
	const char *to_user = NULL;
	const char *to_host = NULL;
	char *mwi_account = NULL;
	char *dup_mwi_account = NULL;
	char *display_m = NULL;
	char *mwi_user = NULL;
	char *mwi_host = NULL;
	char *var = NULL;
	const char *from_user = NULL;
	const char *from_host = NULL;
	const char *reg_host = profile->reg_db_domain;
	const char *sub_host = profile->sub_domain;
	char contact_str[1024] = "";
	uint8_t multi_reg = 0, multi_reg_contact = 0, avoid_multi_reg = 0;
	uint8_t stale = 0, forbidden = 0;
	auth_res_t auth_res = AUTH_OK;
	long exptime = 300;
	switch_event_t *event;
	const char *rpid = "unknown";
	const char *display = "\"user\"";
	char network_ip[80];
	char network_port_c[6];
	char url_ip[80];
	int network_port;
	const char *reg_desc = "Registered";
	const char *call_id = NULL;
	char *force_user;
	char received_data[128] = "";
	char *path_val = NULL;
	switch_event_t *auth_params = NULL;
	int r = 0;
	long reg_count = 0;
	const char *agent = "unknown";
	const char *pres_on_reg = NULL;
	int send_pres = 0;
	int send_message_query = 0;
	int force_ping = 0;
	int is_tls = 0, is_tcp = 0, is_ws = 0, is_wss = 0;
	char expbuf[35] = "";
	time_t reg_time = switch_epoch_time_now(NULL);
	const char *vproto = NULL;
	const char *proto = "sip";
	const char *uparams = NULL;
	const char *p;
	char *utmp = NULL;
	sofia_private_t *sofia_private = NULL;
	char *sw_to_user;
	char *sw_reg_host;
	char *token_val = NULL;


	if (sofia_private_p) {
		sofia_private = *sofia_private_p;
	}

	if (sip && sip->sip_contact && sip->sip_contact->m_url->url_params) {
		uparams = sip->sip_contact->m_url->url_params;
	} else {
		uparams = NULL;
	}


	if (sip && sip->sip_via && (vproto = sip->sip_via->v_protocol)) {
		if (!strcasecmp(vproto, "sip/2.0/ws")) {
			is_ws = 1;
			is_nat = "ws";
		} else if (!strcasecmp(vproto, "sip/2.0/wss")) {
			is_wss = 1;
			is_nat = "wss";

			if (uparams && (p = switch_stristr("transport=ws", uparams))) {
				if (p[12] != 's') {
					utmp = switch_string_replace(uparams, "transport=ws", "transport=wss");
				}
			}
		}
	}

	if (v_event && *v_event) pres_on_reg = switch_event_get_header(*v_event, "send-presence-on-register");

	if (!(send_pres = switch_true(pres_on_reg))) {
		if (pres_on_reg && !strcasecmp(pres_on_reg, "first-only")) {
			send_pres = 2;
		}
	}

	/* all callers must confirm that sip and sip->sip_request are not NULL */
	switch_assert(sip != NULL && sip->sip_request != NULL);

	sofia_glue_get_addr(de->data->e_msg, network_ip, sizeof(network_ip), &network_port);

	snprintf(network_port_c, sizeof(network_port_c), "%d", network_port);

	snprintf(url_ip, sizeof(url_ip), (msg_addrinfo(de->data->e_msg))->ai_addr->sa_family == AF_INET6 ? "[%s]" : "%s", network_ip);

	expires = sip->sip_expires;
	authorization = sip->sip_authorization;
	contact = sip->sip_contact;
	to = sip->sip_to;
	from = sip->sip_from;
	call_id = sip->sip_call_id->i_id;
	switch_assert(call_id);

	if (sip->sip_user_agent) {
		agent = sip->sip_user_agent->g_string;
	}

	if (from) {
		from_user = from->a_url->url_user;
		from_host = from->a_url->url_host;
	}

	if (to) {
		to_user = to->a_url->url_user;
		to_host = to->a_url->url_host;
	}

	if (!to_user) {
		to_user = from_user;
	}
	if (!to_host) {
		to_host = from_host;
	}

	if (!to_user || !to_host) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Can not do authorization without a complete header in REGISTER request from %s:%d\n",
						  network_ip, network_port);

		nua_respond(nh, SIP_401_UNAUTHORIZED, NUTAG_WITH_THIS_MSG(de->data->e_msg), TAG_END());
		switch_goto_int(r, 1, end);
	}

	if (zstr(reg_host)) {
		reg_host = to_host;
	}
	if (zstr(sub_host)) {
		sub_host = to_host;
	}

	if (contact) {
		const char *port = contact->m_url->url_port;
		char new_port[25] = "";
		const char *contact_host = contact->m_url->url_host;
		char *path_encoded = NULL;
		int path_encoded_len = 0;


		if (uparams && switch_stristr("transport=tls", uparams)) {
			is_tls += 1;
			if (sofia_test_pflag(profile, PFLAG_TLS_ALWAYS_NAT)) {
				is_nat = "tls";
			}
		}

		if (sip->sip_contact->m_url->url_type == url_sips) {
			proto = "sips";
			is_tls += 2;
			if (sofia_test_pflag(profile, PFLAG_TLS_ALWAYS_NAT)) {
				is_nat = "tls";
			}
		}

		if (uparams && switch_stristr("transport=tcp", uparams)) {
			is_tcp = 1;
			if (sofia_test_pflag(profile, PFLAG_TCP_ALWAYS_NAT)) {
				is_nat = "tcp";
			}
		}

		display = contact->m_display;

		if (is_nat) {
			if (is_tls) {
				reg_desc = "Registered(TLS-NAT)";
			} else if (is_tcp) {
				reg_desc = "Registered(TCP-NAT)";
			} else if (is_ws) {
				reg_desc = "Registered(WS-NAT)";
			} else if (is_wss) {
				reg_desc = "Registered(WSS-NAT)";
			} else {
				reg_desc = "Registered(UDP-NAT)";
			}
			//contact_host = url_ip;
			//switch_snprintf(new_port, sizeof(new_port), ":%d", network_port);
			//port = NULL;
		} else {
			if (is_tls) {
				reg_desc = "Registered(TLS)";
			} else if (is_tcp) {
				reg_desc = "Registered(TCP)";
			} else {
				reg_desc = "Registered(UDP)";
			}
		}

		if (zstr(display)) {
			if (to) {
				display = to->a_display;
				if (zstr(display)) {
					display = "\"\"";
				}
			}
		}

		if (display && !strchr(display, '"')) {
			display_m = switch_mprintf("\"%q\"", display);
			display = display_m;
		}


		if (sip->sip_path) {
			path_encoded = sofia_glue_get_encoded_fs_path(nh, sip->sip_path, SWITCH_TRUE);
			if (!path_encoded) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Could not get fs_path str.\n");
			}

		} else if (is_nat) {
			char my_contact_str[1024];
			if (uparams) {
				switch_snprintf(my_contact_str, sizeof(my_contact_str), "%s:%s@%s:%d;%s", proto,
								contact->m_url->url_user, url_ip, network_port, utmp ? utmp : uparams);
			} else {
				switch_snprintf(my_contact_str, sizeof(my_contact_str), "%s:%s@%s:%d", proto, contact->m_url->url_user, url_ip, network_port);
			}

			path_encoded_len = (int)(strlen(my_contact_str) * 3) + 1;

			switch_zmalloc(path_encoded, path_encoded_len);
			switch_copy_string(path_encoded, ";fs_path=", 10);
			switch_url_encode(my_contact_str, path_encoded + 9, path_encoded_len - 9);
			exptime = 30;
		}

		if (port) {
			switch_snprintf(new_port, sizeof(new_port), ":%s", port);
		}

		if (is_nat && sofia_test_pflag(profile, PFLAG_RECIEVED_IN_NAT_REG_CONTACT)) {
			switch_snprintf(received_data, sizeof(received_data), ";received=%s:%d", url_ip, network_port);
		}

		if (uparams) {
			switch_snprintf(contact_str, sizeof(contact_str), "%s <%s:%s@%s%s;%s%s%s%s>",
							display, proto, contact->m_url->url_user, contact_host, new_port,
							uparams,
							received_data, is_nat ? ";fs_nat=yes" : "", path_encoded ? path_encoded : "");

		} else {
			switch_snprintf(contact_str, sizeof(contact_str), "%s <%s:%s@%s%s%s%s%s>", display, proto, contact->m_url->url_user, contact_host, new_port,
							received_data, is_nat ? ";fs_nat=yes" : "", path_encoded ? path_encoded : "");
		}

		switch_safe_free(path_encoded);
	}

	if (expires) {
		exptime = expires->ex_delta;
	} else if (contact && contact->m_expires) {
		exptime = atol(contact->m_expires);
	}

	if (regtype == REG_REGISTER) {
		authorization = sip->sip_authorization;
	} else if (regtype == REG_INVITE) {
		authorization = sip->sip_proxy_authorization;
	}

	if (regtype == REG_AUTO_REGISTER || (regtype == REG_REGISTER && sofia_test_pflag(profile, PFLAG_BLIND_REG))) {
		regtype = REG_REGISTER;
		if (!zstr(sw_acl_token)) {
			token_val = strdup(sw_acl_token);

			switch_split_user_domain(token_val, &sw_to_user, &sw_reg_host);
			to_user = sw_to_user;
			reg_host = sw_reg_host;
		}
		goto reg;
	}

	if (authorization) {
		char *v_contact_str = NULL;
		const char *username = "unknown";
		const char *realm = reg_host;
		if ((auth_res = sofia_reg_parse_auth(profile, authorization, sip, de, sip->sip_request->rq_method_name,
											 key, keylen, network_ip, network_port, v_event, exptime, regtype, to_user, &auth_params, &reg_count, user_xml)) == AUTH_STALE) {
			stale = 1;
		}


		if (auth_params) {
			username = switch_event_get_header(auth_params, "sip_auth_username");
			realm = switch_event_get_header(auth_params, "sip_auth_realm");
		}
		if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_REGISTER_ATTEMPT) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-user", to_user);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-host", reg_host);
			if (contact)
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "contact", contact_str);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "call-id", call_id);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "rpid", rpid);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "status", reg_desc);
			if (contact)
				switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "expires", "%ld", (long) exptime);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-user", from_user);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-host", from_host);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-ip", network_ip);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-port", network_port_c);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "username", username);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "realm", realm);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", agent);

            switch (auth_res) {
            case AUTH_OK:
                switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "auth-result", "SUCCESS");
                break;
            case AUTH_RENEWED:
                switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "auth-result", "RENEWED");
                break;
            case AUTH_STALE:
                switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "auth-result", "STALE");
                break;
            case AUTH_FORBIDDEN:
                switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "auth-result", "FORBIDDEN");
                break;
            }
			switch_event_fire(&s_event);
		}

		if (contact && exptime && v_event && *v_event) {
			uint32_t exp_var;
			uint32_t exp_max_deviation_var;
			char *allow_multireg = NULL;
			int auto_connectile = 0;

			allow_multireg = switch_event_get_header(*v_event, "sip-allow-multiple-registrations");
			if (allow_multireg && switch_false(allow_multireg)) {
				avoid_multi_reg = 1;
			}

			/* Allow us to force the SIP user to be something specific - needed if
			 * we - for example - want to be able to ensure that the username a UA can
			 * be contacted at is the same one that they used for authentication.
			 */
			if ((force_user = switch_event_get_header(*v_event, "sip-force-user"))) {
				to_user = force_user;
			}

			if (!is_tcp && !is_tls && (zstr(network_ip) || !switch_check_network_list_ip(network_ip, profile->local_network)) &&
				profile->server_rport_level >= 2 && sip->sip_user_agent &&
				sip->sip_user_agent->g_string &&
				( !strncasecmp(sip->sip_user_agent->g_string, "Polycom", 7) ||
				  !strncasecmp(sip->sip_user_agent->g_string, "KIRK Wireless Server", 20) ||
				  !strncasecmp(sip->sip_user_agent->g_string, "ADTRAN_Total_Access", 19) )) {
				if (sip->sip_via) {
					const char *host = sip->sip_via->v_host;
					const char *c_port = sip->sip_via->v_port;
					int port = 0;

					if (c_port) port = atoi(c_port);
					if (!port)  port = 5060;

					if (host && strcmp(network_ip, host)) {
						auto_connectile = 1;
					} else if (port != network_port) {
						auto_connectile = 1;
					}
				} else {
					auto_connectile = 1;
				}
			}

			if (auto_connectile || (v_contact_str = switch_event_get_header(*v_event, "sip-force-contact"))) {
				if (auto_connectile || (!strcasecmp(v_contact_str, "NDLB-connectile-dysfunction-2.0"))) {
					char *path_encoded = NULL;
					size_t path_encoded_len;
					char my_contact_str[1024];

					switch_snprintf(my_contact_str, sizeof(my_contact_str), "%s:%s@%s:%d", proto, contact->m_url->url_user, url_ip, network_port);
					path_encoded_len = (strlen(my_contact_str) * 3) + 1;

					if (!switch_stristr("fs_path=", contact_str)) {
					switch_zmalloc(path_encoded, path_encoded_len);
					switch_copy_string(path_encoded, ";fs_nat=yes;fs_path=", 21);
					switch_url_encode(my_contact_str, path_encoded + 20, path_encoded_len - 20);
					reg_desc = "Registered(AUTO-NAT-2.0)";
					exptime = 30;

					/* place fs_path (the encoded path) inside the <...> of the contact string, if possible */
					if (contact_str[strlen(contact_str) - 1] == '>') {
						switch_snprintf(contact_str + strlen(contact_str) - 1, sizeof(contact_str) - strlen(contact_str) + 1, "%s>", path_encoded);
					} else {
						switch_snprintf(contact_str + strlen(contact_str), sizeof(contact_str) - strlen(contact_str), "%s", path_encoded);
					}
						switch_safe_free(path_encoded);
					}
				} else {
					if (*received_data && sofia_test_pflag(profile, PFLAG_RECIEVED_IN_NAT_REG_CONTACT)) {
						switch_snprintf(received_data, sizeof(received_data), ";received=%s:%d", url_ip, network_port);
					}

					if (!strcasecmp(v_contact_str, "nat-connectile-dysfunction") ||
						!strcasecmp(v_contact_str, "NDLB-connectile-dysfunction") || !strcasecmp(v_contact_str, "NDLB-tls-connectile-dysfunction")) {
						if (uparams) {
							switch_snprintf(contact_str, sizeof(contact_str), "%s <%s:%s@%s:%d;%s%s;fs_nat=yes>",
											display, proto, contact->m_url->url_user, url_ip, network_port, uparams, received_data);
						} else {
							switch_snprintf(contact_str, sizeof(contact_str), "%s <%s:%s@%s:%d%s;fs_nat=yes>", display, proto,
											contact->m_url->url_user, url_ip,
											network_port, received_data);
						}
						if (switch_stristr(v_contact_str, "transport=tls")) {
							reg_desc = "Registered(TLSHACK)";
						} else {
							reg_desc = "Registered(AUTO-NAT)";
							exptime = 30;
						}
					} else {
						char *p;
						switch_copy_string(contact_str, v_contact_str, sizeof(contact_str));
						for (p = contact_str; p && *p; p++) {
							if (*p == '\'' || *p == '[' || *p == ']') {
								*p = '"';
							}
						}
					}
				}
			}

			if ( (( exp_var = atoi(switch_event_get_header_nil(*v_event, "sip-force-expires-min")) )) ||
			     (( exp_var = profile->sip_force_expires_min )) ) {
				if ( (exp_var > 0) && (exptime < exp_var) ) {
					exptime = exp_var;
				}
			}
			if ( (( exp_var = atoi(switch_event_get_header_nil(*v_event, "sip-force-expires-max")) )) ||
			     (( exp_var = profile->sip_force_expires_max )) ) {
				if ( (exp_var > 0) && (exptime > exp_var) ) {
					exptime = exp_var;
				}
			}
			if ( (( exp_var = atoi(switch_event_get_header_nil(*v_event, "sip-force-expires")) )) ||
			     (( exp_var = profile->sip_force_expires )) ) {
				if (exp_var > 0) {
					exptime = exp_var;
				}
			}

			if ( (( exp_max_deviation_var = atoi(switch_event_get_header_nil(*v_event, "sip-expires-max-deviation")) )) ||
			     (( exp_max_deviation_var = profile->sip_expires_max_deviation )) ) {
				if (exp_max_deviation_var > 0) {
					int exp_deviation;
					/* random number between negative exp_max_deviation_var and positive exp_max_deviation_var: */
					exp_deviation = ( rand() % ( exp_max_deviation_var * 2 ) ) - exp_max_deviation_var;
					exptime += exp_deviation;
				}
			}

		}

		if (auth_res != AUTH_OK && auth_res != AUTH_RENEWED && !stale) {
			if (auth_res == AUTH_FORBIDDEN) {
				nua_respond(nh, SIP_403_FORBIDDEN, NUTAG_WITH_THIS_MSG(de->data->e_msg), TAG_END());
				forbidden = 1;
			} else {
				nua_respond(nh, SIP_401_UNAUTHORIZED, NUTAG_WITH_THIS_MSG(de->data->e_msg), TAG_END());
			}

			if (profile->debug) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Send %s for [%s@%s]\n",
								  forbidden ? "forbidden" : "challenge", to_user, to_host);
			}
			/* Log line added to support Fail2Ban */
			if (sofia_test_pflag(profile, PFLAG_LOG_AUTH_FAIL)) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "SIP auth %s (%s) on sofia profile '%s' "
								  "for [%s@%s] from ip %s\n", forbidden ? "failure" : "challenge",
								  (regtype == REG_INVITE) ? "INVITE" : "REGISTER", profile->name, to_user, to_host, network_ip);
			}

			if (forbidden && switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_REGISTER_FAILURE) == SWITCH_STATUS_SUCCESS) {
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-user", to_user);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-host", to_host);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-ip", network_ip);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", agent);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-port", network_port_c);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "registration-type", (regtype == REG_INVITE) ? "INVITE" : "REGISTER");
				switch_event_fire(&s_event);
			}
			switch_goto_int(r, 1, end);
		}
	}

	if (!authorization || stale) {
		const char *realm = profile->challenge_realm;

		if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_PRE_REGISTER) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-user", to_user);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-host", reg_host);
			if (contact)
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "contact", contact_str);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "call-id", call_id);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "rpid", rpid);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "status", reg_desc);
			if (contact)
				switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "expires", "%ld", (long) exptime);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-user", from_user);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-host", from_host);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-ip", network_ip);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-port", network_port_c);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", agent);
			switch_event_fire(&s_event);
		}

		if (zstr(realm) || !strcasecmp(realm, "auto_to")) {
			realm = to_host;
		} else if (!strcasecmp(realm, "auto_from")) {
			realm = from_host;
		}

		sofia_reg_auth_challenge(profile, nh, de, regtype, realm, stale, exptime);

		if (profile->debug) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Send challenge for [%s@%s]\n", to_user, to_host);
		}
		/* Log line added to support Fail2Ban */
		if (sofia_test_pflag(profile, PFLAG_LOG_AUTH_FAIL)) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "SIP auth challenge (%s) on sofia profile '%s' "
							  "for [%s@%s] from ip %s\n", (regtype == REG_INVITE) ? "INVITE" : "REGISTER",
							  profile->name, to_user, to_host, network_ip);
		}

		switch_goto_int(r, 1, end);
	}

	if (!contact)
		goto respond_200_ok;

  reg:


	if (v_event && *v_event && (var = switch_event_get_header(*v_event, "sip-force-extension"))) {
		to_user = var;
	}

	if (v_event && *v_event && (var = switch_event_get_header(*v_event, "registration_metadata"))) {
		reg_meta = var;
	}

	/* associated MWI account */
	if (v_event && *v_event && (mwi_account = switch_event_get_header(*v_event, "mwi-account"))) {
		dup_mwi_account = strdup(mwi_account);
		switch_assert(dup_mwi_account != NULL);
		switch_split_user_domain(dup_mwi_account, &mwi_user, &mwi_host);
	}

	if (!mwi_user) {
		mwi_user = (char *) to_user;
	}
	if (!mwi_host) {
		mwi_host = (char *) reg_host;
	}

	/* per-profile unsolicited MWI on register */
	if (sofia_test_pflag(profile, PFLAG_MESSAGE_QUERY_ON_REGISTER)) {
		send_message_query = 2;
	} else if (sofia_test_pflag(profile, PFLAG_MESSAGE_QUERY_ON_FIRST_REGISTER)) {
		send_message_query = 1;
	} else {
		send_message_query = 0;
	}

	/* per-account unsolicited MWI on register */
	if (v_event && *v_event && (var = switch_event_get_header(*v_event, "send-message-query-on-register"))) {
		if (switch_true(var)) {
			send_message_query = 2;
		} else if (!strcasecmp(var, "first-only")) {
			send_message_query = 1;
		} else {
			send_message_query = 0;
		}
	}

	/* per-account enable options ping on register */
	if (v_event && *v_event && (var = switch_event_get_header(*v_event, "force_ping"))) {
		if (switch_true(var)) {
			force_ping = 1;
		} else {
			force_ping = 0;
		}
	}

	if (regtype != REG_REGISTER) {
		switch_goto_int(r, 0, end);
	}


	/* Does this profile supports multiple registrations ? */
	multi_reg = (sofia_test_pflag(profile, PFLAG_MULTIREG)) ? 1 : 0;
	multi_reg_contact = (sofia_test_pflag(profile, PFLAG_MULTIREG_CONTACT)) ? 1 : 0;


	if (multi_reg && avoid_multi_reg) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
						  "Disabling multiple registrations on a per-user basis for %s@%s\n", switch_str_nil(to_user), switch_str_nil(to_host));
		multi_reg = 0;
	}

	if (exptime) {
		char guess_ip4[256];
		const char *username = "unknown";
		const char *realm = reg_host;
		char *url = NULL;
		char *contact = NULL;
		switch_bool_t update_registration = SWITCH_FALSE;

		if (auth_params) {
			username = switch_event_get_header(auth_params, "sip_auth_username");
			realm = switch_event_get_header(auth_params, "sip_auth_realm");
		}

		if (auth_res != AUTH_RENEWED || !multi_reg) {
			if (multi_reg) {
				if (multi_reg_contact) {
					sql =
						switch_mprintf("delete from sip_registrations where sip_user='%q' and sip_host='%q' and contact='%q'", to_user, reg_host, contact_str);
				} else {
					sql = switch_mprintf("delete from sip_registrations where call_id='%q'", call_id);
				}
			} else {
				sql = switch_mprintf("delete from sip_registrations where sip_user='%q' and sip_host='%q'", to_user, reg_host);
			}

			sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);
		} else {
			char buf[32] = "";


			sql = switch_mprintf("select count(*) from sip_registrations where sip_user='%q' and sip_username='%q' and sip_host='%q' and contact='%q'",
								 to_user, username, reg_host, contact_str);



			sofia_glue_execute_sql2str(profile, profile->dbh_mutex, sql, buf, sizeof(buf));
			switch_safe_free(sql);
			if (atoi(buf) > 0) {
				update_registration = SWITCH_TRUE;
			}
		}

		switch_find_local_ip(guess_ip4, sizeof(guess_ip4), NULL, AF_INET);

		contact = sofia_glue_get_url_from_contact(contact_str, 1);
		url = switch_mprintf("sofia/%q/%s:%q", profile->name, proto, sofia_glue_strip_proto(contact));

		switch_core_add_registration(to_user, reg_host, call_id, url, (long) reg_time + (long) exptime + profile->sip_expires_late_margin,
									 network_ip, network_port_c, is_tls ? "tls" : is_tcp ? "tcp" : "udp", reg_meta);

		switch_safe_free(url);
		switch_safe_free(contact);

		if ((is_wss || is_ws || (sofia_test_pflag(profile, PFLAG_TCP_UNREG_ON_SOCKET_CLOSE) && (is_tcp || is_tls))) && !sofia_private) {
			char key[256] = "";
			nua_handle_t *hnh;
			switch_snprintf(key, sizeof(key), "%s%s%s", call_id, network_ip, network_port_c);

			switch_mutex_lock(profile->flag_mutex);
			hnh = switch_core_hash_find(profile->reg_nh_hash, key);

			if (!hnh) {
				if (!(sofia_private = su_alloc(nua_handle_get_home(nh), sizeof(*sofia_private)))) {
					abort();
				}

				memset(sofia_private, 0, sizeof(*sofia_private));
				sofia_private->call_id = su_strdup(nua_handle_get_home(nh), call_id);
				sofia_private->network_ip = su_strdup(nua_handle_get_home(nh), network_ip);
				sofia_private->network_port = su_strdup(nua_handle_get_home(nh), network_port_c);
				sofia_private->key = su_strdup(nua_handle_get_home(nh), key);
				sofia_private->user = su_strdup(nua_handle_get_home(nh), to_user);
				sofia_private->realm = su_strdup(nua_handle_get_home(nh), reg_host);

				sofia_private->is_static++;
				*sofia_private_p = sofia_private;
				nua_handle_bind(nh, sofia_private);
				nua_handle_ref(nh);
				switch_core_hash_insert(profile->reg_nh_hash, key, nh);
			}

			switch_mutex_unlock(profile->flag_mutex);
		}


		if (!update_registration) {
			sql = switch_mprintf("insert into sip_registrations "
					"(call_id,sip_user,sip_host,presence_hosts,contact,status,rpid,expires,"
					"user_agent,server_user,server_host,profile_name,hostname,network_ip,network_port,sip_username,sip_realm,"
					"mwi_user,mwi_host, orig_server_host, orig_hostname, sub_host, ping_status, ping_count, ping_expires, force_ping) "
					"values ('%q','%q', '%q','%q','%q','%q', '%q', %ld, '%q', '%q', '%q', '%q', '%q', '%q', '%q','%q','%q','%q','%q','%q','%q','%q', '%q', %d, %ld, %d)",
					call_id, to_user, reg_host, profile->presence_hosts ? profile->presence_hosts : "",
					contact_str, reg_desc, rpid, (long) reg_time + (long) exptime + profile->sip_expires_late_margin,
					agent, from_user, guess_ip4, profile->name, mod_sofia_globals.hostname, network_ip, network_port_c, username, realm,
								 mwi_user, mwi_host, guess_ip4, mod_sofia_globals.hostname, sub_host, "Reachable", 0,
								 (long) switch_epoch_time_now(NULL) + sofia_reg_uniform_distribution(profile->iping_seconds), force_ping);
		} else {
			sql = switch_mprintf("update sip_registrations set call_id='%q',"
								 "sub_host='%q', network_ip='%q',network_port='%q',"
								 "presence_hosts='%q', server_host='%q', orig_server_host='%q',"
								 "hostname='%q', orig_hostname='%q',"
								 "expires = %ld, ping_expires=%ld, force_ping=%d "
								 "where sip_user='%q' and sip_username='%q' and sip_host='%q' and contact='%q'",
								 call_id, sub_host, network_ip, network_port_c,
								 profile->presence_hosts ? profile->presence_hosts : "", guess_ip4, guess_ip4,
                                                                 mod_sofia_globals.hostname, mod_sofia_globals.hostname,
								 (long) reg_time + (long) exptime + profile->sip_expires_late_margin,
								 (long) switch_epoch_time_now(NULL) + sofia_reg_uniform_distribution(profile->iping_seconds),
								 force_ping, to_user, username, reg_host, contact_str);
		}

		if (sql) {
			sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);
		}

		if (!update_registration && sofia_reg_reg_count(profile, to_user, reg_host) == 1) {
			sql = switch_mprintf("delete from sip_presence where sip_user='%q' and sip_host='%q' and profile_name='%q' and open_closed='closed'",
								 to_user, reg_host, profile->name);
			if (mod_sofia_globals.debug_presence > 0) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "DELETE PRESENCE SQL: %s\n", sql);
			}
			sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);
		}

		if (multi_reg) {
			if (multi_reg_contact) {
				sql = switch_mprintf("delete from sip_registrations where contact='%q' and expires!=%ld", contact_str, (long) reg_time + (long) exptime + profile->sip_expires_late_margin);
			} else {
				sql = switch_mprintf("delete from sip_registrations where call_id='%q' and expires!=%ld", call_id, (long) reg_time + (long) exptime + profile->sip_expires_late_margin);
			}

			sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);
		}



		if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_REGISTER) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-user", to_user);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-host", reg_host);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "presence-hosts", profile->presence_hosts ? profile->presence_hosts : "n/a");
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "contact", contact_str);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "call-id", call_id);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "rpid", rpid);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "status", reg_desc);
			switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "expires", "%ld", (long) exptime);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-user", from_user);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "to-host", from_host);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-ip", network_ip);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-port", network_port_c);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "username", username);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "realm", realm);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", agent);
			if (update_registration) {
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "update-reg", "true");
			}
			if (v_event && *v_event) {
				switch_event_merge(s_event, *v_event);
			}
			switch_event_fire(&s_event);
		}



		if (profile->debug) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
							  "Register:\nFrom:    [%s@%s]\nContact: [%s]\nExpires: [%ld]\n", to_user, reg_host, contact_str, (long) exptime);
		}

	} else {
		int send = 1;

		if (multi_reg) {
			if (sofia_reg_reg_count(profile, to_user, sub_host) > 0) {
				send = 0;
			}
		}

		sofia_reg_check_socket(profile, call_id, network_ip, network_port_c);

		if (send && switch_event_create(&event, SWITCH_EVENT_PRESENCE_IN) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "proto", SOFIA_CHAT_PROTO);
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "rpid", rpid);
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "login", profile->url);
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "user-agent",
										   (sip && sip->sip_user_agent) ? sip->sip_user_agent->g_string : "unknown");
			switch_event_add_header(event, SWITCH_STACK_BOTTOM, "from", "%s@%s", to_user, sub_host);
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "status", "Unregistered");
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "presence-source", "register");
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "event_type", "presence");
			switch_event_fire(&event);
		}


		if (multi_reg) {
			char *icontact, *p;
			icontact = sofia_glue_get_url_from_contact(contact_str, 1);
			if ((p = strchr(icontact, ';'))) {
				*p = '\0';
			}
			if ((p = strchr(icontact + 4, ':'))) {
				*p = '\0';
			}

			if (multi_reg_contact) {
				sql =
					switch_mprintf("delete from sip_registrations where sip_user='%q' and sip_host='%q' and contact='%q'", to_user, reg_host, contact_str);
			} else {
				sql = switch_mprintf("delete from sip_registrations where call_id='%q'", call_id);
			}

			sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

			switch_safe_free(icontact);
		} else {

			if ((sql = switch_mprintf("delete from sip_registrations where sip_user='%q' and sip_host='%q'", to_user, reg_host))) {
				sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);
			}
		}
	}

  respond_200_ok:

	if (regtype == REG_REGISTER) {
		char exp_param[128] = "";
		char date[80] = "";
		switch_event_t *s_mwi_event = NULL;

		switch_console_callback_match_t *contact_list = NULL;
		tagi_t *contact_tags;
		switch_console_callback_match_node_t *m;
		int i;

		s_event = NULL;

		if (contact) {
			if (exptime) {
				int debounce_ok = debounce_check(profile, mwi_user, mwi_host);

				switch_snprintf(exp_param, sizeof(exp_param), "expires=%ld", exptime);
				sip_contact_add_param(nua_handle_home(nh), sip->sip_contact, exp_param);

				/* send unsolicited MWI if configured */
				if (send_message_query == 2 || (reg_count == 1 && send_message_query == 1 && debounce_ok)) {
					if (switch_event_create(&s_mwi_event, SWITCH_EVENT_MESSAGE_QUERY) == SWITCH_STATUS_SUCCESS) {
						switch_event_add_header(s_mwi_event, SWITCH_STACK_BOTTOM, "Message-Account", "%s:%s@%s", proto, mwi_user, mwi_host);
						switch_event_add_header_string(s_mwi_event, SWITCH_STACK_BOTTOM, "VM-Sofia-Profile", profile->name);
						switch_event_add_header_string(s_mwi_event, SWITCH_STACK_BOTTOM, "VM-Call-ID", call_id);
					}
				}

				if ((sofia_test_pflag(profile, PFLAG_PRESENCE_ON_REGISTER) ||
					(reg_count == 1 && sofia_test_pflag(profile, PFLAG_PRESENCE_ON_FIRST_REGISTER))
					 || send_pres == 1 || (reg_count == 1 && send_pres == 2)) && debounce_ok) {

					if (sofia_test_pflag(profile, PFLAG_PRESENCE_PROBE_ON_REGISTER)) {
						if (switch_event_create(&s_event, SWITCH_EVENT_PRESENCE_PROBE) == SWITCH_STATUS_SUCCESS) {
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "proto", SOFIA_CHAT_PROTO);
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "login", profile->name);
							switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "from", "%s@%s", to_user, sub_host);
							switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "to", "%s@%s", to_user, sub_host);
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "event_type", "presence");
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "presence-source", "register");
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "alt_event_type", "dialog");
							switch_event_fire(&s_event);
						}
					} else {
						if (switch_event_create(&s_event, SWITCH_EVENT_PRESENCE_IN) == SWITCH_STATUS_SUCCESS) {
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "proto", SOFIA_CHAT_PROTO);
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "login", profile->name);
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "presence-source", "register");
							switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "from", "%s@%s", to_user, sub_host);
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "rpid", "unknown");
							switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "status", "Registered");
							switch_event_fire(&s_event);
						}
					}
				}
			} else {
				const char *username = "unknown";
				const char *realm = "unknown";

				if (auth_params) {
					username = switch_event_get_header(auth_params, "sip_auth_username");
					realm = switch_event_get_header(auth_params, "sip_auth_realm");
				}

				switch_core_del_registration(to_user, reg_host, call_id);

				if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_UNREGISTER) == SWITCH_STATUS_SUCCESS) {
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", profile->name);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "username", username);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-user", to_user);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "from-host", reg_host);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "contact", contact_str);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "call-id", call_id);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "rpid", rpid);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "realm", realm);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-ip", network_ip);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "network-port", network_port_c);
					switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "user-agent", agent);
					switch_event_add_header(s_event, SWITCH_STACK_BOTTOM, "expires", "%ld", (long) exptime);

					if (v_event && *v_event) {
						switch_event_merge(s_event, *v_event);
					}

				}
			}
		}

		switch_rfc822_date(date, switch_micro_time_now());

		/* generate and respond a 200 OK */

		if ((profile->ndlb & PFLAG_NDLB_EXPIRES_IN_REGISTER_RESPONSE)) {
			switch_snprintf(expbuf, sizeof(expbuf), "%ld", exptime);
		}

		if (mod_sofia_globals.reg_deny_binding_fetch_and_no_lookup) {
			/* handle backwards compatibility - contacts will not be looked up but only copied from the request into the response
			   remove this condition later if nobody complains about the extra select of the below new behavior
			   also remove the parts in mod_sofia.h, sofia.c and sofia_reg.c that refer to reg_deny_binding_fetch_and_no_lookup */
			nua_respond(nh, SIP_200_OK, TAG_IF(contact, SIPTAG_CONTACT(sip->sip_contact)), TAG_IF(path_val, SIPTAG_PATH_STR(path_val)),
						TAG_IF(!zstr(expbuf), SIPTAG_EXPIRES_STR(expbuf)),
						NUTAG_WITH_THIS_MSG(de->data->e_msg), SIPTAG_DATE_STR(date), TAG_END());

		} else if ((contact_list = sofia_reg_find_reg_url_with_positive_expires_multi(profile, from_user, reg_host, reg_time, contact_str, exptime))) {
			/* all + 1 tag_i elements initialized as NULL - last one implies TAG_END() */
			switch_zmalloc(contact_tags, sizeof(*contact_tags) * (contact_list->count + 1));
			i = 0;
			for (m = contact_list->head; m; m = m->next) {
				contact_tags[i].t_tag = siptag_contact_str;
				contact_tags[i].t_value = (tag_value_t) m->val;
				++i;
			}


			nua_respond(nh, SIP_200_OK, TAG_IF(path_val, SIPTAG_PATH_STR(path_val)),
						TAG_IF(!zstr(expbuf), SIPTAG_EXPIRES_STR(expbuf)),
						NUTAG_WITH_THIS_MSG(de->data->e_msg), SIPTAG_DATE_STR(date), TAG_NEXT(contact_tags));

			switch_safe_free(contact_tags);
			switch_console_free_matches(&contact_list);

		} else {
			/* respond without any contacts */
			nua_respond(nh, SIP_200_OK, TAG_IF(path_val, SIPTAG_PATH_STR(path_val)),
						TAG_IF(!zstr(expbuf), SIPTAG_EXPIRES_STR(expbuf)),
						NUTAG_WITH_THIS_MSG(de->data->e_msg), SIPTAG_DATE_STR(date), TAG_END());
		}


		if (s_event) {
			switch_event_fire(&s_event);
		}

		if (s_mwi_event) {
			switch_event_fire(&s_mwi_event);
		}

		switch_goto_int(r, 1, end);
	}


  end:
	switch_safe_free(display_m);
	switch_safe_free(dup_mwi_account);
	switch_safe_free(utmp);
	su_free(nua_handle_home(nh), path_val);
	switch_safe_free(token_val);

	if (auth_params) {
		switch_event_destroy(&auth_params);
	}

	return (uint8_t) r;
}



void sofia_reg_handle_sip_i_register(nua_t *nua, sofia_profile_t *profile, nua_handle_t *nh, sofia_private_t **sofia_private_p, sip_t const *sip,
									 sofia_dispatch_event_t *de,
									 tagi_t tags[])
{
	char key[128] = "";
	switch_event_t *v_event = NULL;
	char network_ip[80];
	sofia_regtype_t type = REG_REGISTER;
	int network_port = 0;
	char *is_nat = NULL;
	const char *acl_token = NULL;


#if 0 /* This seems to cause undesirable effects so nevermind */
	if (sip->sip_to && sip->sip_to->a_url && sip->sip_to->a_url->url_host) {
		const char *to_host = sip->sip_to->a_url->url_host;
		if (profile->reg_db_domain) {
			if (!sofia_glue_profile_exists(to_host)) {
				if (sofia_glue_add_profile(switch_core_strdup(profile->pool, to_host), profile) == SWITCH_STATUS_SUCCESS) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Auto-Adding Alias [%s] for profile [%s]\n", to_host, profile->name);
				}
			}
		}
	}
#endif

	sofia_glue_get_addr(de->data->e_msg, network_ip, sizeof(network_ip), &network_port);

	/* backwards compatibility */
	if (mod_sofia_globals.reg_deny_binding_fetch_and_no_lookup && !sip->sip_contact) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "NO CONTACT! ip: %s, port: %i\n", network_ip, network_port);
		nua_respond(nh, 400, "Missing Contact Header", TAG_END());
		goto end;
	}

	if (!(profile->mflags & MFLAG_REGISTER)) {
		nua_respond(nh, SIP_403_FORBIDDEN, NUTAG_WITH_THIS_MSG(de->data->e_msg), TAG_END());
		goto end;
	}

	if (sofia_test_pflag(profile, PFLAG_AGGRESSIVE_NAT_DETECTION)) {
		if (sip && sip->sip_via) {
			const char *port = sip->sip_via->v_port;
			const char *host = sip->sip_via->v_host;

			if (host && sip->sip_via->v_received) {
				is_nat = "via received";
			} else if (host && strcmp(network_ip, host)) {
				is_nat = "via host";
			} else if (port && atoi(port) != network_port) {
				is_nat = "via port";
			}

			if (!is_nat && sip->sip_via->v_port &&
				atoi(sip->sip_via->v_port) == 5060 && network_port != 5060 ) {
				is_nat = "via port";
			}
		}
	}

	if (!is_nat && profile->nat_acl_count) {
		uint32_t x = 0;
		int ok = 1;
		char *last_acl = NULL;
		const char *contact_host = NULL;

		if (sip && sip->sip_contact) {
			contact_host = sip->sip_contact->m_url->url_host;
		}

		if (!zstr(contact_host)) {
			for (x = 0; x < profile->nat_acl_count; x++) {
				last_acl = profile->nat_acl[x];
				if (!(ok = switch_check_network_list_ip(contact_host, last_acl))) {
					break;
				}
			}

			if (ok) {
				is_nat = last_acl;
			}
		}
	}

	if (profile->reg_acl_count) {
		uint32_t x = 0;
		int ok = 1;
		char *last_acl = NULL;
		const char *token_sw = NULL;

		for (x = 0; x < profile->reg_acl_count; x++) {
			last_acl = profile->reg_acl[x];
			if (!(ok = switch_check_network_list_ip_token(network_ip, last_acl, &token_sw))) {
				break;
			}
		}

		if (ok && !sofia_test_pflag(profile, PFLAG_BLIND_REG)) {
			type = REG_AUTO_REGISTER;
			acl_token = token_sw;
		} else if (!ok) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "IP %s Rejected by register acl \"%s\"\n", network_ip, profile->reg_acl[x]);
			nua_respond(nh, SIP_403_FORBIDDEN, NUTAG_WITH_THIS_MSG(de->data->e_msg), TAG_END());
			goto end;
		}
	}

	if (!sip || !sip->sip_request || !sip->sip_request->rq_method_name) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Received an invalid packet!\n");
		nua_respond(nh, SIP_500_INTERNAL_SERVER_ERROR, TAG_END());
		goto end;
	}

	if (is_nat && profile->local_network && switch_check_network_list_ip(network_ip, profile->local_network)) {
		if (profile->debug) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "IP %s is on local network, not seting NAT mode.\n", network_ip);
		}
		is_nat = NULL;
	}

	sofia_reg_handle_register_token(nua, profile, nh, sip, de, type, key, sizeof(key), &v_event, is_nat, sofia_private_p, NULL, acl_token);

	if (v_event) {
		switch_event_destroy(&v_event);
	}

  end:

	if (!sofia_private_p || !*sofia_private_p) nua_handle_destroy(nh);

}

switch_bool_t sip_resolve_prepare_transport(struct dig *dig, sofia_transport_t tport)
{
	struct transport *tports = dig->tports;

	if (tport == SOFIA_TRANSPORT_UDP) {
		tports[0].name = "udp";
		tports[0].service = "SIP+D2U";
		tports[0].srv = "_sip._udp.";
	}
	else if (tport == SOFIA_TRANSPORT_TCP) {
		tports[0].name = "tcp";
		tports[0].service = "SIP+D2T";
		tports[0].srv = "_sip._tcp.";
	}
	else if (tport == SOFIA_TRANSPORT_TCP_TLS) {
		tports[0].name = "tls";
		tports[0].service = "SIPS+D2T";
		tports[0].srv = "_sips._tcp.";
	}
	else if (tport == SOFIA_TRANSPORT_SCTP) {
		tports[0].name = "sctp";
		tports[0].service = "SIP+D2S";
		tports[0].srv = "_sip._sctp.";
	} else {
		return SWITCH_FALSE;
	}
	return SWITCH_TRUE;
}

/* resolve domain name (SRV + A + AAAA) and compare result with passed IP address */
switch_bool_t sip_resolve_compare(const char *domainname, const char *ip, sofia_transport_t transport)
{
	url_t *uri = NULL;
	char const *host;
	char const *port;
	struct dig dig[1] = {{ NULL }};
	su_home_t *home = NULL;
	sres_record_t **answers = NULL;
	switch_bool_t ret = SWITCH_FALSE, ipv6 = SWITCH_FALSE;
	
	if (!host_is_domain(domainname)) {
		return ret;
	}

	if (!sip_resolve_prepare_transport(dig, transport)) {
		return ret;
	}

	home = su_home_new(sizeof(*home));

	dig->sres = sres_resolver_new(getenv("SRESOLV_CONF"));

	uri = url_hdup(home, (void *)domainname);

	if (uri && uri->url_type == url_unknown)
		url_sanitize(uri);

	if (uri && uri->url_type == url_any) {
		goto out;
	}

	if (!uri || (uri->url_type != url_sip && uri->url_type != url_sips)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "invalid uri\n");
		goto out;
	}

	port = url_port(uri);
	if (port && !port[0]) port = NULL;

	host = uri->url_host;

	if (strchr(ip, ':')) {
		ipv6 = SWITCH_TRUE;
	}

	ret = dig_all_srvs_simple(dig, domainname, ip, ipv6);

	if (!ret) {
		answers = dig_addr_simple(dig, host, ipv6?sres_type_aaaa:sres_type_a);
		ret = verify_ip(answers, ip, ipv6);
	}

out:
	su_home_unref(home);
	sres_resolver_unref(dig->sres);

	return ret;
}

static switch_bool_t is_host_from_gateway(const char *remote_ip, sofia_gateway_t *gateway) 
{
	switch_bool_t ret = SWITCH_FALSE;
	char *hosts[3]; /* check the 3 places where we keep IP/hostname */
	int i;

	hosts[0] = gateway->proxy_host_cfg;
	hosts[1] = gateway->register_proxy_host_cfg;
	hosts[2] = gateway->outbound_proxy_host_cfg;

	for (i = 0; i < 3; i++) {
		if (zstr(hosts[i])) {
			continue;
		}

		if (host_is_ip_address(hosts[i])) {
			if (!strcmp(hosts[i], remote_ip)) {
				ret = SWITCH_TRUE;
			}

			if (ret) break;
		} else {
			ret = sip_resolve_compare(hosts[i], remote_ip, gateway->register_transport);
			if (ret) break;
		}
	}

	return ret;
}

static switch_bool_t is_legitimate_gateway(sofia_dispatch_event_t *de, sofia_gateway_t *gateway) 
{
	char remote_ip[80] = { 0 };
	switch_bool_t ret = SWITCH_FALSE;

	sofia_glue_get_addr(de->data->e_msg, remote_ip, sizeof(remote_ip), NULL);

	/* setting param "gw-auth-acl" supersedes everything */
	if (gateway->gw_auth_acl) {
		ret = switch_check_network_list_ip(remote_ip, gateway->gw_auth_acl);
		if (!ret) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Challange from [%s] denied by gw-auth-acl.\n", remote_ip);
		}

		return ret;
	} else {
		return is_host_from_gateway(remote_ip, gateway);
	}
}

void sofia_reg_handle_sip_r_register(int status,
									 char const *phrase,
									 nua_t *nua, sofia_profile_t *profile, nua_handle_t *nh, sofia_private_t *sofia_private, sip_t const *sip,
								sofia_dispatch_event_t *de,
									 tagi_t tags[])
{
	sofia_gateway_t *gateway = NULL;


	if (!sofia_private) {
		nua_handle_destroy(nh);
		return;
	}

	if (!zstr(sofia_private->gateway_name)) {
		gateway = sofia_reg_find_gateway(sofia_private->gateway_name);
	}

	if (gateway) {
		reg_state_t ostate = gateway->state;
		char oregister_network_ip[80] = { 0 };
		char network_ip[80] = { 0 };

		if (de && de->data && de->data->e_msg) {
			if (!zstr_buf(gateway->register_network_ip)) {
				snprintf(oregister_network_ip, sizeof(oregister_network_ip), "%s", gateway->register_network_ip);
			}
			sofia_glue_get_addr(de->data->e_msg, network_ip, sizeof(network_ip), &gateway->register_network_port);
			if (!zstr_buf(network_ip)) {
				snprintf(gateway->register_network_ip, sizeof(gateway->register_network_ip), (msg_addrinfo(de->data->e_msg))->ai_addr->sa_family == AF_INET6 ? "[%s]" : "%s", network_ip);

			}
		}

		switch (status) {
		case 200:
			if (sip && sip->sip_contact) {
				sip_contact_t *contact = sip->sip_contact;
				const char *new_expires;
				uint32_t expi;
				if (contact->m_next) {
					char *full;

					for (; contact; contact = contact->m_next) {
						if ((full = sip_header_as_string(nua_handle_get_home(nh), (void *) contact))) {
							if (switch_stristr(gateway->register_contact, full)) {
								break;
							}

							su_free(nua_handle_get_home(nh), full);
						}
					}
				}

				if (!contact) {
					contact = sip->sip_contact;
				}

				if (contact->m_expires) {
					new_expires = contact->m_expires;
					expi = (uint32_t) atoi(new_expires);

					if (expi > 0 && expi != gateway->freq) {
						//gateway->freq = expi;
						//gateway->expires_str = switch_core_sprintf(gateway->pool, "%d", expi);

						if (expi > 60) {
							gateway->expires = switch_epoch_time_now(NULL) + (expi - 15);
						} else {
							gateway->expires = switch_epoch_time_now(NULL) + (expi - 2);
						}


						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
										  "Changing expire time to %d by request of proxy %s\n", expi, gateway->register_proxy);
					}
				}
			}
			gateway->state = REG_STATE_REGISTER;
			break;
		case 100:
			break;
		default:
			gateway->state = REG_STATE_FAILED;
			gateway->failure_status = status;
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%s Failed Registration with status %s [%d]. failure #%d\n",
							  gateway->name, switch_str_nil(phrase), status, ++gateway->failures);
			break;
		}
		if (ostate != gateway->state ||
		    (!zstr_buf(gateway->register_network_ip) &&
		     (zstr_buf(oregister_network_ip) || strcmp(oregister_network_ip, gateway->register_network_ip)))) {
			sofia_reg_fire_custom_gateway_state_event(gateway, status, phrase);
		}
	}

	if (gateway) {
		sofia_reg_release_gateway(gateway);
	}

}

void sofia_reg_handle_sip_r_challenge(int status,
									  char const *phrase,
									  nua_t *nua, sofia_profile_t *profile, nua_handle_t *nh, sofia_private_t *sofia_private,
									  switch_core_session_t *session, sofia_gateway_t *gateway, sip_t const *sip,
								sofia_dispatch_event_t *de, tagi_t tags[])
{
	sip_www_authenticate_t const *authenticate = NULL;
	char const *realm = NULL;
	char const *scheme = NULL;
	int indexnum;
	char *cur;
	char authentication[256] = "";
	int ss_state;
	sofia_gateway_t *var_gateway = NULL;
	const char *gw_name = NULL;
	switch_channel_t *channel = NULL;
	const char *sip_auth_username = NULL;
	const char *sip_auth_password = NULL;
	char *dup_user = NULL;
	char *dup_pass = NULL;

	if (session && (channel = switch_core_session_get_channel(session))) {
		sip_auth_username = switch_channel_get_variable(channel, "sip_auth_username");
		sip_auth_password = switch_channel_get_variable(channel, "sip_auth_password");
	}

	if (sofia_private) {
		if (*sofia_private->auth_gateway_name) {
			gw_name = sofia_private->auth_gateway_name;
		} else if (*sofia_private->gateway_name) {
			gw_name = sofia_private->gateway_name;
		}
	}

	if (session) {
		private_object_t *tech_pvt;

		if ((tech_pvt = switch_core_session_get_private(session)) && sofia_test_flag(tech_pvt, TFLAG_REFER)) {
			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Received reply from REFER\n");
			goto end;
		}

		gw_name = switch_channel_get_variable(switch_core_session_get_channel(session), "sip_use_gateway");
	}


	if (sip->sip_www_authenticate) {
		authenticate = sip->sip_www_authenticate;
	} else if (sip->sip_proxy_authenticate) {
		authenticate = sip->sip_proxy_authenticate;
	} else {
		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Missing Authenticate Header!\n");
		goto end;
	}


	scheme = (char const *) authenticate->au_scheme;

	if (zstr(scheme)) {
		scheme = "Digest";
	}

	if (authenticate->au_params) {
		for (indexnum = 0; (cur = (char *) authenticate->au_params[indexnum]); indexnum++) {
			if ((realm = strstr(cur, "realm="))) {
				realm += 6;
				break;
			}
		}

		if (zstr(realm)) {
			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Realm: [%s] is invalid\n", switch_str_nil(realm));

			for (indexnum = 0; (cur = (char *) authenticate->au_params[indexnum]); indexnum++) {
				switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "DUMP: [%s]\n", cur);
			}
			goto end;
		}
	} else {
		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "NO AUTHENTICATE PARAMS\n");
		goto end;
	}

	if (!gateway) {
		if (gw_name) {
			var_gateway = sofia_reg_find_gateway((char *) gw_name);
		}


		if (!var_gateway && realm) {
			char rb[512] = "";
			char *p = (char *) realm;
			while (*p == '"') {
				p++;
			}
			switch_set_string(rb, p);
			if ((p = strchr(rb, '"'))) {
				*p = '\0';
			}
			if (!(var_gateway = sofia_reg_find_gateway(rb))) {
				var_gateway = sofia_reg_find_gateway_by_realm(rb);
			}
		}

		if (!var_gateway && sip && sip->sip_to) {
			var_gateway = sofia_reg_find_gateway(sip->sip_to->a_url->url_host);
		}

		if (var_gateway) {
			gateway = var_gateway;
		}
	}

	if (!gateway && !sip_auth_username && sip && sip->sip_to && sip->sip_to->a_url->url_user && sip->sip_to->a_url->url_host) {
		switch_xml_t x_user, x_param, x_params;
		switch_event_t *locate_params;

		switch_event_create(&locate_params, SWITCH_EVENT_REQUEST_PARAMS);
		switch_assert(locate_params);

		switch_event_add_header_string(locate_params, SWITCH_STACK_BOTTOM, "action", "reverse-auth-lookup");

		if ( sip->sip_call_id ) {
			switch_event_add_header_string(locate_params, SWITCH_STACK_BOTTOM, "sip_call_id", sip->sip_call_id->i_id);
		}

		if (switch_xml_locate_user_merged("id", sip->sip_to->a_url->url_user, sip->sip_to->a_url->url_host, NULL,
										  &x_user, locate_params) == SWITCH_STATUS_SUCCESS) {
			if ((x_params = switch_xml_child(x_user, "params"))) {
				for (x_param = switch_xml_child(x_params, "param"); x_param; x_param = x_param->next) {
					const char *var = switch_xml_attr_soft(x_param, "name");
					const char *val = switch_xml_attr_soft(x_param, "value");

					if (!strcasecmp(var, "reverse-auth-user")) {
						switch_safe_free(dup_user);
						dup_user = strdup(val);
						sip_auth_username = dup_user;
					} else if (!strcasecmp(var, "reverse-auth-pass")) {
						switch_safe_free(dup_pass);
						dup_pass = strdup(val);
						sip_auth_password = dup_pass;
					}
				}
			}
			switch_xml_free(x_user);
		}

		switch_event_destroy(&locate_params);
	}

	if (sip_auth_username && sip_auth_password) {
		switch_snprintf(authentication, sizeof(authentication), "%s:%s:%s:%s", scheme, realm, sip_auth_username, sip_auth_password);
	} else if (gateway && is_legitimate_gateway(de, gateway)) {
		switch_snprintf(authentication, sizeof(authentication), "%s:%s:%s:%s", scheme, realm, gateway->auth_username, gateway->register_password);
	} else {
		if (gateway) {
			switch_event_t *s_event;
			if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_GATEWAY_INVALID_DIGEST_REQ) == SWITCH_STATUS_SUCCESS) {
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Gateway", gateway->name);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", gateway->profile->name);
				switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "realm", realm);
				switch_event_fire(&s_event);
			}
		}

		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING,
							  "Cannot locate any authentication credentials to complete an authentication request for realm '%s'\n", realm);

		goto cancel;
	}

	if (profile->debug) {
		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Authenticating '%s' with '%s'.\n",
						  (sip_auth_username && sip_auth_password) ? sip_auth_username : gateway->auth_username, authentication);
	}

	ss_state = nua_callstate_authenticating;

	tl_gets(tags, NUTAG_CALLSTATE_REF(ss_state), SIPTAG_WWW_AUTHENTICATE_REF(authenticate), TAG_END());

	nua_authenticate(nh,
					 TAG_IF(sofia_private && !zstr(sofia_private->gateway_name), SIPTAG_EXPIRES_STR(gateway ? gateway->expires_str : "3600")),
					 NUTAG_AUTH(authentication), TAG_END());

	goto end;

  cancel:

	if (session) {
		switch_channel_hangup(switch_core_session_get_channel(session), SWITCH_CAUSE_MANDATORY_IE_MISSING);
	} else {
		nua_cancel(nh, SIPTAG_CONTACT(SIP_NONE), TAG_END());
	}

  end:


	switch_safe_free(dup_user);
	switch_safe_free(dup_pass);

	if (var_gateway) {
		sofia_reg_release_gateway(var_gateway);
	}

	return;



}

typedef struct {
	char *nonce;
	switch_size_t nplen;
	int last_nc;
} nonce_cb_t;

static int sofia_reg_nonce_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	nonce_cb_t *cb = (nonce_cb_t *) pArg;
	switch_copy_string(cb->nonce, argv[0], cb->nplen);
	if (argc == 2) {
		cb->last_nc = zstr(argv[1]) ? 0 : atoi(argv[1]);
	} else {
		cb->last_nc = 0;
	}
	return 0;
}

static int sofia_reg_regcount_callback(void *pArg, int argc, char **argv, char **columnNames)
{
	int *ret = (int *) pArg;
	if (argc == 1) {
		*ret = atoi(argv[0]);
	}
	return 0;
}

static switch_bool_t sofia_alg_is_allowed(sofia_profile_t *profile, sofia_auth_algs_t alg) 
{
	int i;

	for (i = 0 ; i < SOFIA_MAX_REG_ALGS; i++) {
		if (profile->auth_algs[i] == alg) { 
			return SWITCH_TRUE;
		}
	}
	return SWITCH_FALSE;
}

/*we are more permissive with the alg names that come from cfg */
sofia_auth_algs_t sofia_alg_str2id(char *algorithm, switch_bool_t permissive)
{
	if (!strcasecmp(algorithm, "MD5") || (permissive && !strcasecmp(algorithm, "MD-5"))) {
		return ALG_MD5;
	}
	if (!strcasecmp(algorithm, "SHA-256") || (permissive && !strcasecmp(algorithm, "SHA256"))) {
		return ALG_SHA256;
	}
#if OPENSSL_VERSION_NUMBER >= 0x10101000L
	if (!strcasecmp(algorithm, "SHA-512-256") || (permissive && !strcasecmp(algorithm, "SHA512")) 
			|| (permissive && !strcasecmp(algorithm, "SHA512-256")) || (permissive && !strcasecmp(algorithm, "SHA-512"))) {
		return ALG_SHA512;
	}
#endif
	return ALG_NONE;
}

switch_status_t sofia_make_digest(sofia_auth_algs_t use_alg, char **digest, const void *input, unsigned int *outputlen) 
{
	switch_status_t status = SWITCH_STATUS_FALSE;
	switch (use_alg) 
	{
		case ALG_MD5:
			status = switch_digest_string("md5", digest, input, strlen((char *)input), outputlen);
			break;
		case ALG_SHA256:
			status = switch_digest_string("sha256", digest, input, strlen((char *)input), outputlen);
			break;
#if OPENSSL_VERSION_NUMBER >= 0x10101000L
		case ALG_SHA512:
			status = switch_digest_string("sha512-256", digest, input, strlen((char *)input), outputlen);
			break;
#endif
		default:
			return SWITCH_STATUS_FALSE;
	}
	return status;
}

auth_res_t sofia_reg_parse_auth(sofia_profile_t *profile,
								sip_authorization_t const *authorization,
								sip_t const *sip,
								sofia_dispatch_event_t *de,
								const char *regstr,
								char *np,
								size_t nplen,
								char *ip,
								int network_port,
								switch_event_t **v_event,
								long exptime, sofia_regtype_t regtype, const char *to_user, switch_event_t **auth_params, long *reg_count, switch_xml_t *user_xml)
{
	int indexnum;
	const char *cur;
	char *uridigest = NULL, *bigdigest = NULL, *hexdigest = NULL;
	char *username, *realm, *nonce, *uri, *qop, *cnonce, *nc, *response, *algorithm, *input = NULL, *input2 = NULL;
	auth_res_t ret = AUTH_FORBIDDEN;
	int first = 0;
	const char *passwd = NULL;
	const char *a1_hash = NULL;
	const char *mwi_account = NULL;
	switch_bool_t allow_empty_password = SWITCH_TRUE;
	const char *call_id = NULL;
	char *sql;
	char *number_alias = NULL;
	switch_xml_t user = NULL, param, uparams;
	char *domain_name = NULL;
	switch_event_t *params = NULL;
	const char *auth_acl = NULL;
	long ncl = 0;
	sip_unknown_t *un;
	const char *user_agent = NULL;
	const char *user_agent_filter = profile->user_agent_filter;
	uint32_t max_registrations_perext = profile->max_registrations_perext;
	char client_port[16];
	uint8_t use_alg;
	unsigned int digest_outputlen;

	snprintf(client_port, 15, "%d", network_port);

	username = realm = nonce = uri = qop = cnonce = nc = response = algorithm = NULL;

	if (authorization->au_params) {
		for (indexnum = 0; (cur = authorization->au_params[indexnum]); indexnum++) {
			char *var, *val, *p, *work;
			var = val = work = NULL;
			if ((work = strdup(cur))) {
				var = work;
				if ((val = strchr(var, '='))) {
					*val++ = '\0';
					while (*val == '"') {
						*val++ = '\0';
					}
					if ((p = strchr(val, '"'))) {
						*p = '\0';
					}

					if (!strcasecmp(var, "username") && !username) {
						username = strdup(val);
					} else if (!strcasecmp(var, "realm") && !realm) {
						realm = strdup(val);
					} else if (!strcasecmp(var, "nonce") && !nonce) {
						nonce = strdup(val);
					} else if (!strcasecmp(var, "uri") && !uri) {
						uri = strdup(val);
					} else if (!strcasecmp(var, "qop") && !qop) {
						qop = strdup(val);
					} else if (!strcasecmp(var, "cnonce") && !cnonce) {
						cnonce = strdup(val);
					} else if (!strcasecmp(var, "response") && !response) {
						response = strdup(val);
					} else if (!strcasecmp(var, "nc") && !nc) {
						nc = strdup(val);
					} else if (!strcasecmp(var, "algorithm") && !algorithm) {
						algorithm = strdup(val);
					}

				}

				free(work);
			}
		}
	}

	if (!(username && realm && nonce && uri && response)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid Authorization header!\n");
		ret = AUTH_STALE;
		goto end;
	}

	/* Optional check that auth name == SIP username */
	if ((regtype == REG_REGISTER) && sofia_test_pflag(profile, PFLAG_CHECKUSER)) {
		if (zstr(username) || zstr(to_user) || strcasecmp(to_user, username)) {
			/* Names don't match, so fail */
			if (profile->debug) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "SIP username %s does not match auth username\n", switch_str_nil(to_user));
			}
			goto end;
		}
	}

	if (algorithm) {
		if (profile->rfc8760_algs_count) {
			switch_bool_t not_allowed = SWITCH_FALSE;
			sofia_auth_algs_t alg_id = sofia_alg_str2id(algorithm, SWITCH_FALSE);
			if ((alg_id == ALG_NONE) || !sofia_alg_is_allowed(profile, alg_id)) {
				not_allowed = SWITCH_TRUE;
			} else {
				use_alg = alg_id;
			}
			if (not_allowed) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "SIP auth hash algorithm explicitly not allowed. [%s]\n", algorithm);
				goto end;
			}
		} else {
			use_alg = ALG_MD5;
		}
	} else {
		use_alg = ALG_MD5;
	}

	user_agent = (sip && sip->sip_user_agent) ? sip->sip_user_agent->g_string : "unknown";

	if (zstr(np)) {
		nonce_cb_t cb = { 0 };
		long nc_long = 0;

		first = 1;

		if (nc) {
			nc_long = strtoul(nc, 0, 16);
			sql = switch_mprintf("select nonce,last_nc from sip_authentication where nonce='%q' and last_nc < %lu", nonce, nc_long);
		} else {
			sql = switch_mprintf("select nonce from sip_authentication where nonce='%q'", nonce);
		}

		cb.nonce = np;
		cb.nplen = nplen;

		switch_assert(sql != NULL);

		sofia_glue_execute_sql_callback(profile, profile->dbh_mutex, sql, sofia_reg_nonce_callback, &cb);
		free(sql);

		//if (!sofia_glue_execute_sql2str(profile, profile->dbh_mutex, sql, np, nplen)) {
		if (zstr(np) || (profile->max_auth_validity != 0 && (uint32_t)cb.last_nc >= profile->max_auth_validity )) {
			sql = switch_mprintf("delete from sip_authentication where nonce='%q'", nonce);
			sofia_glue_execute_sql(profile, &sql, SWITCH_TRUE);
			ret = AUTH_STALE;
			goto end;
		}

		if (reg_count) {
			*reg_count = cb.last_nc + 1;
		}
	}

	switch_event_create(&params, SWITCH_EVENT_REQUEST_PARAMS);
	switch_assert(params);
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "action", "sip_auth");
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_profile", profile->name);
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_user_agent", user_agent);
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_username", username);
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_realm", realm);
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_nonce", nonce);
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_uri", uri);

	if (sip->sip_contact) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_contact_user", sip->sip_contact->m_url->url_user);
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_contact_host", sip->sip_contact->m_url->url_host);
	}

	if (sip->sip_to) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_to_user", sip->sip_to->a_url->url_user);
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_to_host", sip->sip_to->a_url->url_host);
		if (sip->sip_to->a_url->url_port) {
			switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_to_port", sip->sip_to->a_url->url_port);
		}
	}

	if (sip->sip_via) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_via_protocol", sofia_glue_transport2str(sofia_glue_via2transport(sip->sip_via)));
	}


	if (sip->sip_from) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_from_user", sip->sip_from->a_url->url_user);
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_from_host", sip->sip_from->a_url->url_host);
		if (sip->sip_from->a_url->url_port) {
			switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_from_port", sip->sip_from->a_url->url_port);
		}
	}

	if (sip->sip_call_id && sip->sip_call_id->i_id) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_call_id", sip->sip_call_id->i_id);
	}


	if (sip->sip_request) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_request_user", sip->sip_request->rq_url->url_user);
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_request_host", sip->sip_request->rq_url->url_host);
		if (sip->sip_request->rq_url->url_port) {
			switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_request_port", sip->sip_request->rq_url->url_port);
		}
	}

	for (un = sip->sip_unknown; un; un = un->un_next) {
		if (!strncasecmp(un->un_name, "X-", 2)) {
			if (!zstr(un->un_value)) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "adding %s => %s to xml_curl request\n", un->un_name, un->un_value);
				switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, un->un_name, un->un_value);
			}
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "skipping %s => %s from xml_curl request\n", un->un_name, un->un_value);
		}
	}

	if (qop) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_qop", qop);
	}
	if (cnonce) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_cnonce", cnonce);
	}
	if (nc) {
		switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_nc", nc);
	}
	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_response", response);

	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "sip_auth_method", (sip && sip->sip_request) ? sip->sip_request->rq_method_name : NULL);

	switch_event_add_header_string(params, SWITCH_STACK_BOTTOM, "client_port", client_port);
	if (auth_params) {
		switch_event_dup(auth_params, params);
	}


	if (!zstr(profile->reg_domain)) {
		domain_name = profile->reg_domain;
	} else {
		domain_name = realm;
	}

	if (switch_xml_locate_user_merged("id", zstr(username) ? "nobody" : username, domain_name, ip, &user, params) != SWITCH_STATUS_SUCCESS) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Can't find user [%s@%s] from %s\n"
						  "You must define a domain called '%s' in your directory and add a user with the id=\"%s\" attribute\n"
						  "and you must configure your device to use the proper domain in its authentication credentials.\n", username, domain_name,
						  ip, domain_name, username);

		ret = AUTH_FORBIDDEN;
		goto end;
	} else {
		const char *type = switch_xml_attr(user, "type");
		if (type && !strcasecmp(type, "pointer")) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Can't register a pointer.\n");
			ret = AUTH_FORBIDDEN;
			goto end;
		}
	}

	if (!(number_alias = (char *) switch_xml_attr(user, "number-alias"))) {
		number_alias = zstr(username) ? "nobody" : username;
	}

	if (!(uparams = switch_xml_child(user, "params"))) {
		ret = AUTH_OK;
		goto skip_auth;
	} else {
		for (param = switch_xml_child(uparams, "param"); param; param = param->next) {
			const char *var = switch_xml_attr_soft(param, "name");
			const char *val = switch_xml_attr_soft(param, "value");

			if (!strcasecmp(var, "sip-forbid-register") && switch_true(val)) {
				ret = AUTH_FORBIDDEN;
				goto end;
			}

			if (!strcasecmp(var, "password")) {
				passwd = val;
			}

			if (!strcasecmp(var, "auth-acl")) {
				auth_acl = val;
			}

			if (!strcasecmp(var, "a1-hash")) {
				a1_hash = val;
			}
			if (!strcasecmp(var, "mwi-account")) {
				mwi_account = val;
			}
			if (!strcasecmp(var, "allow-empty-password")) {
				allow_empty_password = switch_true(val);
			}
			if (!strcasecmp(var, "user-agent-filter")) {
				user_agent_filter = val;
			}
			if (!strcasecmp(var, "max-registrations-per-extension")) {
				max_registrations_perext = atoi(val);
			}
		}
	}

	if (auth_acl) {
		if (!switch_check_network_list_ip(ip, auth_acl)) {
			int network_ip_is_proxy = 0;
			uint32_t x = 0;
			char *last_acl = NULL;
			if (profile->proxy_acl_count == 0) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "IP %s Rejected by user acl [%s] and no proxy acl present\n", ip, auth_acl);
				ret = AUTH_FORBIDDEN;
				goto end;
			} else {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "IP %s Rejected by user acl [%s] checking proxy ACLs now\n", ip, auth_acl);
			}
			/* Check if network_ip is a proxy allowed to send us calls */
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%d acls to check for proxy\n", profile->proxy_acl_count);

			for (x = 0; x < profile->proxy_acl_count; x++) {
				last_acl = profile->proxy_acl[x];
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "checking %s against acl %s\n", ip, last_acl);
				if (switch_check_network_list_ip(ip, last_acl)) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s is a proxy according to the %s acl\n", ip, last_acl);
					network_ip_is_proxy = 1;
					break;
				}
			}
			/*
			 * if network_ip is a proxy allowed to send traffic, check for auth
			 * ip header and see if it matches against the auth acl
			 */
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "network ip is a proxy [%d]\n", network_ip_is_proxy);
			if (network_ip_is_proxy) {
				int x_auth_ip = 0;
				for (un = sip->sip_unknown; un; un = un->un_next) {
					if (!strcasecmp(un->un_name, "X-AUTH-IP")) {
						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "found auth ip [%s] header of [%s]\n", un->un_name, un->un_value);
						if (!zstr(un->un_value)) {
							if (!switch_check_network_list_ip(un->un_value, auth_acl)) {
								switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "IP %s Rejected by user acl %s\n", un->un_value, auth_acl);
								ret = AUTH_FORBIDDEN;
								goto end;
							} else {
								switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
												  "IP %s allowed by acl %s, checking credentials\n", un->un_value, auth_acl);
								x_auth_ip = 1;
								break;
							}
						}
					}
				}
				if (!x_auth_ip) {
					ret = AUTH_FORBIDDEN;
					goto end;
				}
			}
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "IP [%s] passed ACL check [%s]\n", ip, auth_acl);
		}
	}

	if (!allow_empty_password && zstr(passwd) && zstr(a1_hash)) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Empty password denied for user %s@%s\n", username, domain_name);
		ret = AUTH_FORBIDDEN;
		goto end;
	}

	if (zstr(passwd) && zstr(a1_hash)) {
		ret = AUTH_OK;
		goto skip_auth;
	}

	if (!a1_hash) {
		input = switch_mprintf("%s:%s:%s", username, realm, passwd);

		if (sofia_make_digest(use_alg, &hexdigest, (void *)input, &digest_outputlen) != SWITCH_STATUS_SUCCESS) {
			switch_safe_free(input);
			goto end;
		}

		switch_safe_free(input);
		a1_hash = hexdigest;
	}

	if (user_agent_filter) {
		if (switch_regex_match(user_agent, user_agent_filter) == SWITCH_STATUS_SUCCESS) {
			if (sofia_test_pflag(profile, PFLAG_LOG_AUTH_FAIL)) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
								  "SIP auth OK (REGISTER) due to user-agent-filter.  Filter \"%s\" User-Agent \"%s\"\n", user_agent_filter, user_agent);
			}
		} else {
			ret = AUTH_FORBIDDEN;
			if (sofia_test_pflag(profile, PFLAG_LOG_AUTH_FAIL)) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING,
								  "SIP auth failure (REGISTER) due to user-agent-filter.  Filter \"%s\" User-Agent \"%s\"\n", user_agent_filter,
								  user_agent);
			}
			goto end;
		}
	}

	/* The max-registrations-per-extension-option only affects REGISTER-authentications */
	if ((REG_REGISTER == regtype || REG_AUTO_REGISTER == regtype) && max_registrations_perext > 0 && (sip && sip->sip_contact && (sip->sip_contact->m_expires == NULL || atol(sip->sip_contact->m_expires) > 0))) {
		/* if expires is null still process */
		/* expires == 0 means the phone is going to unregiser, so don't count against max */
		uint32_t count = 0;

		call_id = sip->sip_call_id->i_id;
		switch_assert(call_id);

		sql = switch_mprintf("select count(sip_user) from sip_registrations where sip_user='%q' AND call_id <> '%q' AND sip_host='%q'",
							 sip->sip_to->a_url->url_user, call_id, domain_name);
		switch_assert(sql != NULL);
		sofia_glue_execute_sql_callback(profile, NULL, sql, sofia_reg_regcount_callback, &count);
		free(sql);

		if (count + 1 > max_registrations_perext) {
			ret = AUTH_FORBIDDEN;
			if (sofia_test_pflag(profile, PFLAG_LOG_AUTH_FAIL)) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING,
								  "SIP auth failure (REGISTER) due to reaching max allowed registrations.  Count: %d\n", count);
			}
			goto end;
		}
	}

  for_the_sake_of_interop:

	if ((input = switch_mprintf("%s:%q", regstr, uri))) {
		if (sofia_make_digest(use_alg, &uridigest, (void *)input, &digest_outputlen) != SWITCH_STATUS_SUCCESS) {
			switch_safe_free(input);
			goto end;
		}
	}

	if (nc && cnonce && qop) {
		input2 = switch_mprintf("%s:%s:%s:%s:%s:%s", a1_hash, nonce, nc, cnonce, qop, uridigest);
	} else {
		input2 = switch_mprintf("%s:%s:%s", a1_hash, nonce, uridigest);
	}

	if (input2) {
		if (sofia_make_digest(use_alg, &bigdigest, (void *)input2, &digest_outputlen) != SWITCH_STATUS_SUCCESS) {
			switch_safe_free(input2);
			goto end;
		}
	}

	if (input2 && !strcasecmp(bigdigest, response)) {
		ret = AUTH_OK;
	} else {
		if ((profile->ndlb & PFLAG_NDLB_BROKEN_AUTH_HASH) && strcasecmp(regstr, "REGISTER") && strcasecmp(regstr, "INVITE")) {
			/* some clients send an ACK with the method 'INVITE' in the hash which will break auth so we will
			   try again with INVITE so we don't get people complaining to us when someone else's client has a bug......
			 */
			switch_safe_free(input);
			switch_safe_free(input2);
			regstr = "INVITE";
			goto for_the_sake_of_interop;
		}

		ret = AUTH_FORBIDDEN;
	}

	switch_safe_free(input2);

  skip_auth:
	if (first && (ret == AUTH_OK || ret == AUTH_RENEWED)) {
		if (v_event && !*v_event) {
			switch_event_create_plain(v_event, SWITCH_EVENT_REQUEST_PARAMS);
		}


		if (v_event && *v_event) {
			short int xparams_type[6];
			switch_xml_t xparams[6];
			int i = 0;

			switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "sip_number_alias", number_alias);
			switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "sip_auth_username", username);
			switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "sip_auth_realm", realm);
			switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "number_alias", number_alias);
			switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "user_name", username);
			switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "domain_name", domain_name);

			if (mwi_account) {
				switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, "mwi-account", mwi_account);
			}

			if ((uparams = switch_xml_child(user, "params"))) {
				xparams_type[i] = 0;
				xparams[i++] = uparams;
			}

			if ((uparams = switch_xml_child(user, "variables"))) {
				xparams_type[i] = 1;
				xparams[i++] = uparams;
			}

			if (i <= 6) {
				int j = 0;
				const char *gw_val = NULL;

				for (j = 0; j < i; j++) {
					for (param = switch_xml_child(xparams[j], (xparams_type[j] ? "variable" : "param")); param; param = param->next) {
						const char *var = switch_xml_attr_soft(param, "name");
						const char *val = switch_xml_attr_soft(param, "value");

						if (!zstr(var) && !zstr(val) && (xparams_type[j] == 1 || !strncasecmp(var, "sip-", 4) || !strcasecmp(var, "register-gateway"))) {
							if (profile->debug) {
								switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "event_add_header -> '%s' = '%s'\n", var, val);
							}
							switch_event_add_header_string(*v_event, SWITCH_STACK_BOTTOM, var, val);
						}
					}
				}
				if ((gw_val = switch_event_get_header(*v_event, "register-gateway"))) {
					sofia_gateway_t *gateway_ptr = NULL;
					if (!strcasecmp(gw_val, "all")) {
						switch_xml_t gateways_tag, gateway_tag;
						if ((gateways_tag = switch_xml_child(user, "gateways"))) {
							for (gateway_tag = switch_xml_child(gateways_tag, "gateway"); gateway_tag; gateway_tag = gateway_tag->next) {
								char *name = (char *) switch_xml_attr_soft(gateway_tag, "name");
								if (zstr(name)) {
									name = "anonymous";
								}

								if ((gateway_ptr = sofia_reg_find_gateway(name))) {
									reg_state_t ostate = gateway_ptr->state;
									gateway_ptr->retry = 0;
									if (exptime) {
										gateway_ptr->state = REG_STATE_UNREGED;
									} else {
										gateway_ptr->state = REG_STATE_UNREGISTER;
									}
									if (ostate != gateway_ptr->state) {
										sofia_reg_fire_custom_gateway_state_event(gateway_ptr, 0, NULL);
									}
									sofia_reg_release_gateway(gateway_ptr);
								}

							}
						}
					} else {
						int x, argc;
						char *mydata, *argv[50];

						mydata = strdup(gw_val);
						switch_assert(mydata != NULL);

						argc = switch_separate_string(mydata, ',', argv, (sizeof(argv) / sizeof(argv[0])));

						for (x = 0; x < argc; x++) {
							if ((gateway_ptr = sofia_reg_find_gateway((char *) argv[x]))) {
								reg_state_t ostate = gateway_ptr->state;
								gateway_ptr->retry = 0;
								if (exptime) {
									gateway_ptr->state = REG_STATE_UNREGED;
								} else {
									gateway_ptr->state = REG_STATE_UNREGISTER;
								}
								if (ostate != gateway_ptr->state) {
									sofia_reg_fire_custom_gateway_state_event(gateway_ptr, 0, NULL);
								}
								sofia_reg_release_gateway(gateway_ptr);
							} else {
								switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Gateway '%s' not found.\n", argv[x]);
							}
						}

						free(mydata);
					}
				}
			}
		}
	}
  end:


	if (nc && cnonce && qop && ret == AUTH_OK) {
		ret = AUTH_RENEWED;
	}

	if (((ret == AUTH_OK) || (ret == AUTH_RENEWED)) && nc) {
		ncl = strtoul(nc, 0, 16);

		sql = switch_mprintf("update sip_authentication set expires='%ld',last_nc=%lu where nonce='%q'",
							 (long)switch_epoch_time_now(NULL) + (profile->nonce_ttl ? profile->nonce_ttl : DEFAULT_NONCE_TTL) + exptime, ncl, nonce);

		switch_assert(sql != NULL);
		sofia_glue_execute_sql_now(profile, &sql, SWITCH_TRUE);

	}

	switch_event_destroy(&params);

	if (user) {
		if (user_xml) {
			*user_xml = user;
		} else {
			switch_xml_free(user);
		}
	}

	switch_safe_free(input);
	switch_safe_free(username);
	switch_safe_free(realm);
	switch_safe_free(nonce);
	switch_safe_free(uri);
	switch_safe_free(qop);
	switch_safe_free(cnonce);
	switch_safe_free(nc);
	switch_safe_free(response);
	switch_safe_free(algorithm);
	switch_safe_free(uridigest);
	switch_safe_free(bigdigest);
	switch_safe_free(hexdigest);

	if (reg_count && !*reg_count) {
		if ((ret == AUTH_OK || ret == AUTH_RENEWED)) {
			if (ncl) {
				*reg_count = ncl;
			} else {
				*reg_count = 1;
			}
		} else {
			*reg_count = 0;
		}
	}

	return ret;

}


sofia_gateway_t *sofia_reg_find_gateway__(const char *file, const char *func, int line, const char *key)
{
	sofia_gateway_t *gateway = NULL;

	switch_mutex_lock(mod_sofia_globals.hash_mutex);
	if ((gateway = (sofia_gateway_t *) switch_core_hash_find(mod_sofia_globals.gateway_hash, key))) {
		if (!sofia_test_pflag(gateway->profile, PFLAG_RUNNING) || gateway->deleted) {
			gateway = NULL;
			goto done;
		}
		if (sofia_reg_gateway_rdlock__(file, func, line, gateway) != SWITCH_STATUS_SUCCESS) {
			gateway = NULL;
		}
	}

  done:
	switch_mutex_unlock(mod_sofia_globals.hash_mutex);
	return gateway;
}


sofia_gateway_t *sofia_reg_find_gateway_by_realm__(const char *file, const char *func, int line, const char *key)
{
	sofia_gateway_t *gateway = NULL;
	switch_hash_index_t *hi;
	const void *var;
	void *val;

	switch_mutex_lock(mod_sofia_globals.hash_mutex);
	for (hi = switch_core_hash_first(mod_sofia_globals.gateway_hash); hi; hi = switch_core_hash_next(&hi)) {
		switch_core_hash_this(hi, &var, NULL, &val);
		if (key && (gateway = (sofia_gateway_t *) val) && !gateway->deleted && gateway->register_realm && !strcasecmp(gateway->register_realm, key)) {
			break;
		} else {
			gateway = NULL;
		}
	}
	switch_safe_free(hi);

	if (gateway) {
		if (!sofia_test_pflag(gateway->profile, PFLAG_RUNNING) || gateway->deleted) {
			gateway = NULL;
			goto done;
		}
		if (switch_thread_rwlock_tryrdlock(gateway->profile->rwlock) != SWITCH_STATUS_SUCCESS) {
			switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_ERROR, "Profile %s is locked\n", gateway->profile->name);
			gateway = NULL;
		}
	}
	if (gateway) {
#ifdef SOFIA_DEBUG_RWLOCKS
		switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, SWITCH_LOG_ERROR, "XXXXXXXXXXXXXX GW LOCK %s\n", gateway->profile->name);
#endif
	}

  done:
	switch_mutex_unlock(mod_sofia_globals.hash_mutex);
	return gateway;
}

switch_status_t sofia_reg_gateway_rdlock__(const char *file, const char *func, int line, sofia_gateway_t *gateway)
{
	switch_status_t status = sofia_glue_profile_rdlock__(file, func, line, gateway->profile);

#ifdef SOFIA_DEBUG_RWLOCKS
	if (status == SWITCH_STATUS_SUCCESS) {
		switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, SWITCH_LOG_ERROR, "XXXXXXXXXXXXXX GW LOCK %s\n", gateway->profile->name);
	}
#endif

	return status;
}


void sofia_reg_release_gateway__(const char *file, const char *func, int line, sofia_gateway_t *gateway)
{
	switch_thread_rwlock_unlock(gateway->profile->rwlock);
#ifdef SOFIA_DEBUG_RWLOCKS
	switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, SWITCH_LOG_ERROR, "XXXXXXXXXXXXXX GW UNLOCK %s\n", gateway->profile->name);
#endif
}

switch_status_t sofia_reg_add_gateway(sofia_profile_t *profile, const char *key, sofia_gateway_t *gateway)
{
	switch_status_t status = SWITCH_STATUS_FALSE;
	char *pkey = switch_mprintf("%s::%s", profile->name, key);
	sofia_gateway_t *gp;

	switch_mutex_lock(profile->gw_mutex);

	gateway->next = profile->gateways;
	profile->gateways = gateway;

	switch_mutex_unlock(profile->gw_mutex);

	switch_mutex_lock(mod_sofia_globals.hash_mutex);

	if ((gp = switch_core_hash_find(mod_sofia_globals.gateway_hash, key))) {
		if (gp->deleted) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Removing deleted gateway from hash.\n");
			switch_core_hash_delete(mod_sofia_globals.gateway_hash, gp->name);
			switch_core_hash_delete(mod_sofia_globals.gateway_hash, pkey);
			switch_core_hash_delete(mod_sofia_globals.gateway_hash, key);
		}
	}

	if (!switch_core_hash_find(mod_sofia_globals.gateway_hash, key) && !switch_core_hash_find(mod_sofia_globals.gateway_hash, pkey)) {
		status = switch_core_hash_insert(mod_sofia_globals.gateway_hash, key, gateway);
		status |= switch_core_hash_insert(mod_sofia_globals.gateway_hash, pkey, gateway);
		if (status != SWITCH_STATUS_SUCCESS) {
			status = SWITCH_STATUS_FALSE;
		}
	} else {
		status = SWITCH_STATUS_FALSE;
	}
	switch_mutex_unlock(mod_sofia_globals.hash_mutex);

	free(pkey);

	if (status == SWITCH_STATUS_SUCCESS) {
		switch_event_t *s_event;
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Added gateway '%s' to profile '%s'\n", gateway->name, gateway->profile->name);
		if (switch_event_create_subclass(&s_event, SWITCH_EVENT_CUSTOM, MY_EVENT_GATEWAY_ADD) == SWITCH_STATUS_SUCCESS) {
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "Gateway", gateway->name);
			switch_event_add_header_string(s_event, SWITCH_STACK_BOTTOM, "profile-name", gateway->profile->name);
			switch_event_fire(&s_event);
		}
	}

	return status;
}

/* For Emacs:
 * Local Variables:
 * mode:c
 * indent-tabs-mode:t
 * tab-width:4
 * c-basic-offset:4
 * End:
 * For VIM:
 * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
 */
