freeswitch_rs/include/switch_event.c

/*
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2005-2014, 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>
 * Michael Jerris <mike@jerris.com>
 * Paul D. Tinsley <pdt at jackhammer.org>
 * William King <william.king@quentustech.com>
 * Raymond Chandler <intralanman@freeswitch.org>
 *
 * switch_event.c -- Event System
 *
 */

#include <switch.h>
#include "private/switch_core_pvt.h"
#include <switch_event.h>
#ifdef HAVE_LIBTPL
#include <tpl.h>
#endif

//#define SWITCH_EVENT_RECYCLE
#define DISPATCH_QUEUE_LEN 10000
//#define DEBUG_DISPATCH_QUEUES

/*! \brief A node to store binded events */
struct switch_event_node {
	/*! the id of the node */
	char *id;
	/*! the event id enumeration to bind to */
	switch_event_types_t event_id;
	/*! the event subclass to bind to for custom events */
	char *subclass_name;
	/*! a callback function to execute when the event is triggered */
	switch_event_callback_t callback;
	/*! private data */
	void *user_data;
	struct switch_event_node *next;
};

/*! \brief A registered custom event subclass  */
struct switch_event_subclass {
	/*! the owner of the subclass */
	char *owner;
	/*! the subclass name */
	char *name;
	/*! the subclass was reserved by a listener so it's ok for a module to reserve it still */
	int bind;
};


static struct {
	switch_event_channel_id_t ID;
	switch_thread_rwlock_t *rwlock;
	switch_hash_t *hash;
	switch_hash_t *perm_hash;
	switch_hash_t *lahash;
	switch_mutex_t *lamutex;
} event_channel_manager;

#define MAX_DISPATCH_VAL 64
static unsigned int MAX_DISPATCH = MAX_DISPATCH_VAL;
static unsigned int SOFT_MAX_DISPATCH = 0;
static char guess_ip_v4[80] = "";
static char guess_ip_v6[80] = "";
static switch_event_node_t *EVENT_NODES[SWITCH_EVENT_ALL + 1] = { NULL };
static switch_thread_rwlock_t *RWLOCK = NULL;
static switch_mutex_t *BLOCK = NULL;
static switch_mutex_t *POOL_LOCK = NULL;
static switch_memory_pool_t *RUNTIME_POOL = NULL;
static switch_memory_pool_t *THRUNTIME_POOL = NULL;
static switch_thread_t *EVENT_DISPATCH_QUEUE_THREADS[MAX_DISPATCH_VAL] = { 0 };
static uint8_t EVENT_DISPATCH_QUEUE_RUNNING[MAX_DISPATCH_VAL] = { 0 };
static switch_queue_t *EVENT_DISPATCH_QUEUE = NULL;
static switch_queue_t *EVENT_CHANNEL_DISPATCH_QUEUE = NULL;
static switch_mutex_t *EVENT_QUEUE_MUTEX = NULL;
static switch_mutex_t *CUSTOM_HASH_MUTEX = NULL;
static switch_hash_t *CUSTOM_HASH = NULL;
static int THREAD_COUNT = 0;
static int DISPATCH_THREAD_COUNT = 0;
static int EVENT_CHANNEL_DISPATCH_THREAD_COUNT = 0;
static int EVENT_CHANNEL_DISPATCH_THREAD_STARTING = 0;
static int SYSTEM_RUNNING = 0;
static uint64_t EVENT_SEQUENCE_NR = 0;
#ifdef SWITCH_EVENT_RECYCLE
static switch_queue_t *EVENT_RECYCLE_QUEUE = NULL;
static switch_queue_t *EVENT_HEADER_RECYCLE_QUEUE = NULL;
#endif

static void unsub_all_switch_event_channel(void);

static char *my_dup(const char *s)
{
	size_t len = strlen(s) + 1;
	void *new = malloc(len);
	switch_assert(new);

	return (char *) memcpy(new, s, len);
}

#ifndef ALLOC
#define ALLOC(size) malloc(size)
#endif
#ifndef DUP
#define DUP(str) my_dup(str)
#endif
#ifndef FREE
#define FREE(ptr) switch_safe_free(ptr)
#endif

static void free_header(switch_event_header_t **header);

/* make sure this is synced with the switch_event_types_t enum in switch_types.h
   also never put any new ones before EVENT_ALL
*/
static char *EVENT_NAMES[] = {
	"CUSTOM",
	"CLONE",
	"CHANNEL_CREATE",
	"CHANNEL_DESTROY",
	"CHANNEL_STATE",
	"CHANNEL_CALLSTATE",
	"CHANNEL_ANSWER",
	"CHANNEL_HANGUP",
	"CHANNEL_HANGUP_COMPLETE",
	"CHANNEL_EXECUTE",
	"CHANNEL_EXECUTE_COMPLETE",
	"CHANNEL_HOLD",
	"CHANNEL_UNHOLD",
	"CHANNEL_BRIDGE",
	"CHANNEL_UNBRIDGE",
	"CHANNEL_PROGRESS",
	"CHANNEL_PROGRESS_MEDIA",
	"CHANNEL_OUTGOING",
	"CHANNEL_PARK",
	"CHANNEL_UNPARK",
	"CHANNEL_APPLICATION",
	"CHANNEL_ORIGINATE",
	"CHANNEL_UUID",
	"API",
	"LOG",
	"INBOUND_CHAN",
	"OUTBOUND_CHAN",
	"STARTUP",
	"SHUTDOWN",
	"PUBLISH",
	"UNPUBLISH",
	"TALK",
	"NOTALK",
	"SESSION_CRASH",
	"MODULE_LOAD",
	"MODULE_UNLOAD",
	"DTMF",
	"MESSAGE",
	"PRESENCE_IN",
	"NOTIFY_IN",
	"PRESENCE_OUT",
	"PRESENCE_PROBE",
	"MESSAGE_WAITING",
	"MESSAGE_QUERY",
	"ROSTER",
	"CODEC",
	"BACKGROUND_JOB",
	"DETECTED_SPEECH",
	"DETECTED_TONE",
	"PRIVATE_COMMAND",
	"HEARTBEAT",
	"TRAP",
	"ADD_SCHEDULE",
	"DEL_SCHEDULE",
	"EXE_SCHEDULE",
	"RE_SCHEDULE",
	"RELOADXML",
	"NOTIFY",
	"PHONE_FEATURE",
	"PHONE_FEATURE_SUBSCRIBE",
	"SEND_MESSAGE",
	"RECV_MESSAGE",
	"REQUEST_PARAMS",
	"CHANNEL_DATA",
	"GENERAL",
	"COMMAND",
	"SESSION_HEARTBEAT",
	"CLIENT_DISCONNECTED",
	"SERVER_DISCONNECTED",
	"SEND_INFO",
	"RECV_INFO",
	"RECV_RTCP_MESSAGE",
	"SEND_RTCP_MESSAGE",
	"CALL_SECURE",
	"NAT",
	"RECORD_START",
	"RECORD_STOP",
	"PLAYBACK_START",
	"PLAYBACK_STOP",
	"CALL_UPDATE",
	"FAILURE",
	"SOCKET_DATA",
	"MEDIA_BUG_START",
	"MEDIA_BUG_STOP",
	"CONFERENCE_DATA_QUERY",
	"CONFERENCE_DATA",
	"CALL_SETUP_REQ",
	"CALL_SETUP_RESULT",
	"CALL_DETAIL",
	"DEVICE_STATE",
	"TEXT",
	"SHUTDOWN_REQUESTED",
	"ALL"
};

static int switch_events_match(switch_event_t *event, switch_event_node_t *node)
{
	int match = 0;

	if (node->event_id == SWITCH_EVENT_ALL) {
		match++;

		if (!node->subclass_name) {
			return match;
		}
	}

	if (match || event->event_id == node->event_id) {

		if (event->subclass_name && node->subclass_name) {
			if (!strncasecmp(node->subclass_name, "file:", 5)) {
				char *file_header;
				if ((file_header = switch_event_get_header(event, "file")) != 0) {
					match = !strcmp(node->subclass_name + 5, file_header) ? 1 : 0;
				}
			} else if (!strncasecmp(node->subclass_name, "func:", 5)) {
				char *func_header;
				if ((func_header = switch_event_get_header(event, "function")) != 0) {
					match = !strcmp(node->subclass_name + 5, func_header) ? 1 : 0;
				}
			} else if (event->subclass_name && node->subclass_name) {
				match = !strcmp(event->subclass_name, node->subclass_name) ? 1 : 0;
			}
		} else if ((event->subclass_name && !node->subclass_name) || (!event->subclass_name && !node->subclass_name)) {
			match = 1;
		} else {
			match = 0;
		}
	}

	return match;
}


static void *SWITCH_THREAD_FUNC switch_event_deliver_thread(switch_thread_t *thread, void *obj)
{
	switch_event_t *event = (switch_event_t *) obj;

	switch_event_deliver(&event);

	return NULL;
}

static void switch_event_deliver_thread_pool(switch_event_t **event)
{
	switch_thread_data_t *td;

	td = malloc(sizeof(*td));
	switch_assert(td);

	td->alloc = 1;
	td->func = switch_event_deliver_thread;
	td->obj = *event;
	td->pool = NULL;

	*event = NULL;

	switch_thread_pool_launch_thread(&td);

}

static void *SWITCH_THREAD_FUNC switch_event_dispatch_thread(switch_thread_t *thread, void *obj)
{
	switch_queue_t *queue = (switch_queue_t *) obj;
	int my_id = 0;

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	THREAD_COUNT++;
	DISPATCH_THREAD_COUNT++;

	for (my_id = 0; my_id < MAX_DISPATCH_VAL; my_id++) {
		if (EVENT_DISPATCH_QUEUE_THREADS[my_id] == thread) {
			break;
		}
	}

	if ( my_id >= MAX_DISPATCH_VAL ) {
		switch_mutex_unlock(EVENT_QUEUE_MUTEX);
		return NULL;
	}

	EVENT_DISPATCH_QUEUE_RUNNING[my_id] = 1;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);


	for (;;) {
		void *pop = NULL;
		switch_event_t *event = NULL;

		if (!SYSTEM_RUNNING) {
			break;
		}

		if (switch_queue_pop(queue, &pop) != SWITCH_STATUS_SUCCESS) {
			continue;
		}

		if (!pop) {
			break;
		}

		event = (switch_event_t *) pop;
		switch_event_deliver(&event);
		switch_os_yield();
	}


	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	EVENT_DISPATCH_QUEUE_RUNNING[my_id] = 0;
	THREAD_COUNT--;
	DISPATCH_THREAD_COUNT--;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Dispatch Thread %d Ended.\n", my_id);
	return NULL;

}

static int PENDING = 0;

static switch_status_t switch_event_queue_dispatch_event(switch_event_t **eventp)
{

	switch_event_t *event = *eventp;

	if (!SYSTEM_RUNNING) {
		return SWITCH_STATUS_FALSE;
	}

	while (event) {
		int launch = 0;

		switch_mutex_lock(EVENT_QUEUE_MUTEX);

		if (!PENDING && switch_queue_size(EVENT_DISPATCH_QUEUE) > (unsigned int)(DISPATCH_QUEUE_LEN * DISPATCH_THREAD_COUNT)) {
			if (SOFT_MAX_DISPATCH + 1 < MAX_DISPATCH) {
				launch++;
				PENDING++;
			}
		}

		switch_mutex_unlock(EVENT_QUEUE_MUTEX);

		if (launch) {
			if (SOFT_MAX_DISPATCH + 1 < MAX_DISPATCH) {
				switch_event_launch_dispatch_threads(SOFT_MAX_DISPATCH + 1);
			}

			switch_mutex_lock(EVENT_QUEUE_MUTEX);
			PENDING--;
			switch_mutex_unlock(EVENT_QUEUE_MUTEX);
		}

		*eventp = NULL;
		switch_queue_push(EVENT_DISPATCH_QUEUE, event);
		event = NULL;

	}

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(void) switch_event_deliver(switch_event_t **event)
{
	switch_event_types_t e;
	switch_event_node_t *node;

	if (SYSTEM_RUNNING) {
		switch_thread_rwlock_rdlock(RWLOCK);
		for (e = (*event)->event_id;; e = SWITCH_EVENT_ALL) {
			for (node = EVENT_NODES[e]; node; node = node->next) {
				if (switch_events_match(*event, node)) {
					(*event)->bind_user_data = node->user_data;
					node->callback(*event);
				}
			}

			if (e == SWITCH_EVENT_ALL) {
				break;
			}
		}
		switch_thread_rwlock_unlock(RWLOCK);
	}

	switch_event_destroy(event);
}

SWITCH_DECLARE(switch_status_t) switch_event_running(void)
{
	return SYSTEM_RUNNING ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}

SWITCH_DECLARE(const char *) switch_event_name(switch_event_types_t event)
{
	switch_assert(BLOCK != NULL);
	switch_assert(RUNTIME_POOL != NULL);

	return EVENT_NAMES[event];
}

SWITCH_DECLARE(switch_status_t) switch_name_event(const char *name, switch_event_types_t *type)
{
	switch_event_types_t x;
	switch_assert(BLOCK != NULL);
	switch_assert(RUNTIME_POOL != NULL);

	for (x = 0; x <= SWITCH_EVENT_ALL; x++) {
		if ((strlen(name) > 13 && !strcasecmp(name + 13, EVENT_NAMES[x])) || !strcasecmp(name, EVENT_NAMES[x])) {
			*type = x;
			return SWITCH_STATUS_SUCCESS;
		}
	}

	return SWITCH_STATUS_FALSE;
}

SWITCH_DECLARE(switch_status_t) switch_event_free_subclass_detailed(const char *owner, const char *subclass_name)
{
	switch_event_subclass_t *subclass;
	switch_status_t status = SWITCH_STATUS_FALSE;

	switch_mutex_lock(CUSTOM_HASH_MUTEX);

	switch_assert(RUNTIME_POOL != NULL);
	switch_assert(CUSTOM_HASH != NULL);

	if ((subclass = switch_core_hash_find(CUSTOM_HASH, subclass_name))) {
		if (!strcmp(owner, subclass->owner)) {
			switch_thread_rwlock_wrlock(RWLOCK);
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Subclass reservation deleted for %s:%s\n", owner, subclass_name);
			switch_core_hash_delete(CUSTOM_HASH, subclass_name);
			FREE(subclass->owner);
			FREE(subclass->name);
			FREE(subclass);
			status = SWITCH_STATUS_SUCCESS;
			switch_thread_rwlock_unlock(RWLOCK);
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Subclass reservation %s inuse by listeners, detaching..\n", subclass_name);
			subclass->bind = 1;
		}
	}

	switch_mutex_unlock(CUSTOM_HASH_MUTEX);

	return status;
}

SWITCH_DECLARE(switch_status_t) switch_event_reserve_subclass_detailed(const char *owner, const char *subclass_name)
{
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	switch_event_subclass_t *subclass;

	switch_mutex_lock(CUSTOM_HASH_MUTEX);

	switch_assert(RUNTIME_POOL != NULL);
	switch_assert(CUSTOM_HASH != NULL);

	if ((subclass = switch_core_hash_find(CUSTOM_HASH, subclass_name))) {
		/* a listener reserved it for us, now we can lock it so nobody else can have it */
		if (subclass->bind) {
			subclass->bind = 0;
			switch_goto_status(SWITCH_STATUS_SUCCESS, end);
		}
		switch_goto_status(SWITCH_STATUS_INUSE, end);
	}

	switch_zmalloc(subclass, sizeof(*subclass));

	subclass->owner = DUP(owner);
	subclass->name = DUP(subclass_name);

	status = switch_core_hash_insert(CUSTOM_HASH, subclass->name, subclass);

	if (status != SWITCH_STATUS_SUCCESS) {
		free(subclass->owner);
		free(subclass->name);
		free(subclass);
	}

end:

	switch_mutex_unlock(CUSTOM_HASH_MUTEX);

	return status;
}

SWITCH_DECLARE(void) switch_core_memory_reclaim_events(void)
{
#ifdef SWITCH_EVENT_RECYCLE

	void *pop;
	int size;
	size = switch_queue_size(EVENT_RECYCLE_QUEUE);

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Returning %d recycled event(s) %d bytes\n", size, (int) sizeof(switch_event_t) * size);
	size = switch_queue_size(EVENT_HEADER_RECYCLE_QUEUE);
	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Returning %d recycled event header(s) %d bytes\n",
					  size, (int) sizeof(switch_event_header_t) * size);

	while (switch_queue_trypop(EVENT_HEADER_RECYCLE_QUEUE, &pop) == SWITCH_STATUS_SUCCESS && pop) {
		free(pop);
	}
	while (switch_queue_trypop(EVENT_RECYCLE_QUEUE, &pop) == SWITCH_STATUS_SUCCESS && pop) {
		free(pop);
	}
#else
	return;
#endif

}

SWITCH_DECLARE(switch_status_t) switch_event_shutdown(void)
{
	uint32_t x = 0;
	int last = 0;
	switch_hash_index_t *hi;
	const void *var;
	void *val;

	if (switch_core_test_flag(SCF_MINIMAL)) {
		return SWITCH_STATUS_SUCCESS;
	}

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	SYSTEM_RUNNING = 0;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	unsub_all_switch_event_channel();

	if (EVENT_CHANNEL_DISPATCH_QUEUE) {
		switch_queue_trypush(EVENT_CHANNEL_DISPATCH_QUEUE, NULL);
		switch_queue_interrupt_all(EVENT_CHANNEL_DISPATCH_QUEUE);
	}

	if (runtime.events_use_dispatch) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Stopping dispatch queues\n");

		for(x = 0; x < (uint32_t)DISPATCH_THREAD_COUNT; x++) {
			switch_queue_trypush(EVENT_DISPATCH_QUEUE, NULL);
		}


		switch_queue_interrupt_all(EVENT_DISPATCH_QUEUE);

		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Stopping dispatch threads\n");

		for(x = 0; x < (uint32_t)MAX_DISPATCH; x++) {
			if (EVENT_DISPATCH_QUEUE_THREADS[x]) {
				switch_status_t st;
				switch_thread_join(&st, EVENT_DISPATCH_QUEUE_THREADS[x]);
			}
		}
	}

	x = 0;
	while (x < 100 && THREAD_COUNT) {
		switch_yield(100000);
		if (THREAD_COUNT == last) {
			x++;
		}
		last = THREAD_COUNT;
	}

	if (runtime.events_use_dispatch) {
		void *pop = NULL;
		switch_event_t *event = NULL;

		while (switch_queue_trypop(EVENT_DISPATCH_QUEUE, &pop) == SWITCH_STATUS_SUCCESS && pop) {
			event = (switch_event_t *) pop;
			switch_event_destroy(&event);
		}
	}

	for (hi = switch_core_hash_first(CUSTOM_HASH); hi; hi = switch_core_hash_next(&hi)) {
		switch_event_subclass_t *subclass;
		switch_core_hash_this(hi, &var, NULL, &val);
		if ((subclass = (switch_event_subclass_t *) val)) {
			FREE(subclass->name);
			FREE(subclass->owner);
			FREE(subclass);
		}
	}

	switch_core_hash_destroy(&event_channel_manager.lahash);
	switch_core_hash_destroy(&event_channel_manager.hash);
	switch_core_hash_destroy(&event_channel_manager.perm_hash);

	switch_core_hash_destroy(&CUSTOM_HASH);
	switch_core_memory_reclaim_events();

	return SWITCH_STATUS_SUCCESS;
}

static void check_dispatch(void)
{
	if (!EVENT_DISPATCH_QUEUE) {
		switch_mutex_lock(BLOCK);

		if (!EVENT_DISPATCH_QUEUE) {
			switch_queue_create(&EVENT_DISPATCH_QUEUE, DISPATCH_QUEUE_LEN * MAX_DISPATCH, THRUNTIME_POOL);
			switch_event_launch_dispatch_threads(1);

			while (!THREAD_COUNT) {
				switch_cond_next();
			}
		}
		switch_mutex_unlock(BLOCK);
	}
}



SWITCH_DECLARE(void) switch_event_launch_dispatch_threads(uint32_t max)
{
	switch_threadattr_t *thd_attr;
	uint32_t index = 0;
	uint32_t sanity = 200;

	switch_memory_pool_t *pool = RUNTIME_POOL;

	check_dispatch();

	if (max > MAX_DISPATCH) {
		return;
	}

	if (max < SOFT_MAX_DISPATCH) {
		return;
	}

	for (index = SOFT_MAX_DISPATCH; index < max && index < MAX_DISPATCH; index++) {
		if (EVENT_DISPATCH_QUEUE_THREADS[index]) {
			continue;
		}

		switch_threadattr_create(&thd_attr, pool);
		switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
		switch_threadattr_priority_set(thd_attr, SWITCH_PRI_REALTIME);
		switch_thread_create(&EVENT_DISPATCH_QUEUE_THREADS[index], thd_attr, switch_event_dispatch_thread, EVENT_DISPATCH_QUEUE, pool);
		while(--sanity && !EVENT_DISPATCH_QUEUE_RUNNING[index]) switch_yield(10000);

		if (index == 1) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Create event dispatch thread %d\n", index);
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Create additional event dispatch thread %d\n", index);
		}
	}

	SOFT_MAX_DISPATCH = index;
}

SWITCH_DECLARE(switch_status_t) switch_event_init(switch_memory_pool_t *pool)
{

	/* don't need any more dispatch threads than we have CPU's*/
	MAX_DISPATCH = (switch_core_cpu_count() / 2) + 1;
	if (MAX_DISPATCH < 2) {
		MAX_DISPATCH = 2;
	}

	switch_assert(pool != NULL);
	THRUNTIME_POOL = RUNTIME_POOL = pool;
	switch_thread_rwlock_create(&RWLOCK, RUNTIME_POOL);
	switch_mutex_init(&BLOCK, SWITCH_MUTEX_NESTED, RUNTIME_POOL);
	switch_mutex_init(&POOL_LOCK, SWITCH_MUTEX_NESTED, RUNTIME_POOL);
	switch_mutex_init(&EVENT_QUEUE_MUTEX, SWITCH_MUTEX_NESTED, RUNTIME_POOL);
	switch_mutex_init(&CUSTOM_HASH_MUTEX, SWITCH_MUTEX_NESTED, RUNTIME_POOL);
	switch_core_hash_init(&CUSTOM_HASH);

	if (switch_core_test_flag(SCF_MINIMAL)) {
		return SWITCH_STATUS_SUCCESS;
	}

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Activate Eventing Engine.\n");

	switch_core_hash_init(&event_channel_manager.lahash);
	switch_mutex_init(&event_channel_manager.lamutex, SWITCH_MUTEX_NESTED, RUNTIME_POOL);

	switch_thread_rwlock_create(&event_channel_manager.rwlock, RUNTIME_POOL);
	switch_core_hash_init(&event_channel_manager.hash);
	switch_core_hash_init(&event_channel_manager.perm_hash);
	event_channel_manager.ID = 1;

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	SYSTEM_RUNNING = -1;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	//switch_threadattr_create(&thd_attr, pool);
	switch_find_local_ip(guess_ip_v4, sizeof(guess_ip_v4), NULL, AF_INET);
	switch_find_local_ip(guess_ip_v6, sizeof(guess_ip_v6), NULL, AF_INET6);


#ifdef SWITCH_EVENT_RECYCLE
	switch_queue_create(&EVENT_RECYCLE_QUEUE, 250000, THRUNTIME_POOL);
	switch_queue_create(&EVENT_HEADER_RECYCLE_QUEUE, 250000, THRUNTIME_POOL);
#endif

	check_dispatch();

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	SYSTEM_RUNNING = 1;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_create_subclass_detailed(const char *file, const char *func, int line,
																	  switch_event_t **event, switch_event_types_t event_id, const char *subclass_name)
{
#ifdef SWITCH_EVENT_RECYCLE
	void *pop;
#endif

	*event = NULL;

	if ((event_id != SWITCH_EVENT_CLONE && event_id != SWITCH_EVENT_CUSTOM) && subclass_name) {
		return SWITCH_STATUS_GENERR;
	}
#ifdef SWITCH_EVENT_RECYCLE
	if (EVENT_RECYCLE_QUEUE && switch_queue_trypop(EVENT_RECYCLE_QUEUE, &pop) == SWITCH_STATUS_SUCCESS && pop) {
		*event = (switch_event_t *) pop;
	} else {
#endif
		*event = ALLOC(sizeof(switch_event_t));
		switch_assert(*event);
#ifdef SWITCH_EVENT_RECYCLE
	}
#endif

	memset(*event, 0, sizeof(switch_event_t));

	if (event_id == SWITCH_EVENT_REQUEST_PARAMS || event_id == SWITCH_EVENT_CHANNEL_DATA || event_id == SWITCH_EVENT_MESSAGE) {
		(*event)->flags |= EF_UNIQ_HEADERS;
	}

	if (event_id != SWITCH_EVENT_CLONE) {
		(*event)->event_id = event_id;
		switch_event_prep_for_delivery_detailed(file, func, line, *event);
	}

	if (subclass_name) {
		(*event)->subclass_name = DUP(subclass_name);
		switch_event_add_header_string(*event, SWITCH_STACK_BOTTOM, "Event-Subclass", subclass_name);
	}

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_set_priority(switch_event_t *event, switch_priority_t priority)
{
	event->priority = priority;
	switch_event_add_header_string(event, SWITCH_STACK_TOP, "priority", switch_priority_name(priority));
	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_rename_header(switch_event_t *event, const char *header_name, const char *new_header_name)
{
	switch_event_header_t *hp;
	switch_ssize_t hlen = -1;
	unsigned long hash = 0;
	int x = 0;

	switch_assert(event);

	if (!header_name) {
		return SWITCH_STATUS_FALSE;
	}

	hash = switch_ci_hashfunc_default(header_name, &hlen);

	for (hp = event->headers; hp; hp = hp->next) {
		if ((!hp->hash || hash == hp->hash) && !strcasecmp(hp->name, header_name)) {
			FREE(hp->name);
			hp->name = DUP(new_header_name);
			hlen = -1;
			hp->hash = switch_ci_hashfunc_default(hp->name, &hlen);
			x++;
		}
	}

	return x ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}


SWITCH_DECLARE(switch_event_header_t *) switch_event_get_header_ptr(switch_event_t *event, const char *header_name)
{
	switch_event_header_t *hp;
	switch_ssize_t hlen = -1;
	unsigned long hash = 0;

	switch_assert(event);

	if (!header_name)
		return NULL;

	hash = switch_ci_hashfunc_default(header_name, &hlen);

	for (hp = event->headers; hp; hp = hp->next) {
		if ((!hp->hash || hash == hp->hash) && !strcasecmp(hp->name, header_name)) {
			return hp;
		}
	}
	return NULL;
}

SWITCH_DECLARE(char *) switch_event_get_header_idx(switch_event_t *event, const char *header_name, int idx)
{
	switch_event_header_t *hp;

	if ((hp = switch_event_get_header_ptr(event, header_name))) {
		if (idx > -1) {
			if (idx < hp->idx) {
				return hp->array[idx];
			} else {
				return NULL;
			}
		}

		return hp->value;
	} else if (!strcmp(header_name, "_body")) {
		return event->body;
	}

	return NULL;
}

SWITCH_DECLARE(char *) switch_event_get_body(switch_event_t *event)
{
	return (event ? event->body : NULL);
}

SWITCH_DECLARE(switch_status_t) switch_event_del_header_val(switch_event_t *event, const char *header_name, const char *val)
{
	switch_event_header_t *hp, *lp = NULL, *tp;
	switch_status_t status = SWITCH_STATUS_FALSE;
	int x = 0;
	switch_ssize_t hlen = -1;
	unsigned long hash = 0;

	tp = event->headers;
	hash = switch_ci_hashfunc_default(header_name, &hlen);
	while (tp) {
		hp = tp;
		tp = tp->next;

		x++;
		switch_assert(x < 1000000);

		if ((!hp->hash || hash == hp->hash) && !strcasecmp(header_name, hp->name) && (zstr(val) || !strcmp(hp->value, val))) {
			if (lp) {
				lp->next = hp->next;
			} else {
				event->headers = hp->next;
			}
			if (hp == event->last_header || !hp->next) {
				event->last_header = lp;
			}
			free_header(&hp);
			status = SWITCH_STATUS_SUCCESS;
		} else {
			lp = hp;
		}
	}

	return status;
}

static switch_event_header_t *new_header(const char *header_name)
{
	switch_event_header_t *header;

#ifdef SWITCH_EVENT_RECYCLE
		void *pop;
		if (EVENT_HEADER_RECYCLE_QUEUE && switch_queue_trypop(EVENT_HEADER_RECYCLE_QUEUE, &pop) == SWITCH_STATUS_SUCCESS) {
			header = (switch_event_header_t *) pop;
		} else {
#endif
			header = ALLOC(sizeof(*header));
			switch_assert(header);
#ifdef SWITCH_EVENT_RECYCLE
		}
#endif

		memset(header, 0, sizeof(*header));
		header->name = DUP(header_name);

		return header;

}

static void free_header(switch_event_header_t **header)
{
	assert(header);

	if (*header) {
		if ((*header)->idx) {
			if (!(*header)->array) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "INDEX WITH NO ARRAY ?? [%s][%s]\n", (*header)->name, (*header)->value);
			} else {
				int i = 0;

				for (i = 0; i < (*header)->idx; i++) {
					FREE((*header)->array[i]);
				}
				FREE((*header)->array);
			}
		}

		FREE((*header)->name);
		FREE((*header)->value);

#ifdef SWITCH_EVENT_RECYCLE
		if (switch_queue_trypush(EVENT_HEADER_RECYCLE_QUEUE, *header) != SWITCH_STATUS_SUCCESS) {
			FREE(*header);
		}
#else
		FREE(*header);
#endif
	}
}

SWITCH_DECLARE(int) switch_event_add_array(switch_event_t *event, const char *var, const char *val)
{
	char *data;
	char **array;
	int max = 0;
	int len;
	const char *p;
	int i;

	if (strlen(val) < 8) {
		return -1;
	}

	p = val + 7;

	max = 1;

	while((p = strstr(p, "|:"))) {
		max++;
		p += 2;
	}

	data = strdup(val + 7);

	len = (sizeof(char *) * max) + 1;
	switch_assert(len);

	array = malloc(len);
	switch_assert(array);
	memset(array, 0, len);

	switch_separate_string_string(data, "|:", array, max);

	for(i = 0; i < max; i++) {
		switch_event_add_header_string(event, SWITCH_STACK_PUSH, var, array[i]);
	}

	free(array);
	free(data);

	return 0;
}

static switch_status_t switch_event_base_add_header(switch_event_t *event, switch_stack_t stack, const char *header_name, char *data)
{
	switch_event_header_t *header = NULL;
	switch_ssize_t hlen = -1;
	int exists = 0, fly = 0;
	char *index_ptr;
	int index = 0;
	char *real_header_name = NULL;


	if (!strcmp(header_name, "_body")) {
		switch_event_set_body(event, data);
	}

	if ((index_ptr = strchr(header_name, '['))) {
		index_ptr++;
		index = atoi(index_ptr);
		real_header_name = DUP(header_name);
		if ((index_ptr = strchr(real_header_name, '['))) {
			*index_ptr++ = '\0';
		}
		header_name = real_header_name;
	}

	if (index_ptr || (stack & SWITCH_STACK_PUSH) || (stack & SWITCH_STACK_UNSHIFT)) {
		switch_event_header_t *tmp_header = NULL;

		if (!(header = switch_event_get_header_ptr(event, header_name)) && index_ptr) {

			tmp_header = header = new_header(header_name);

			if (switch_test_flag(event, EF_UNIQ_HEADERS)) {
				switch_event_del_header(event, header_name);
			}

			fly++;
		}

		if (header || (header = switch_event_get_header_ptr(event, header_name))) {

			if (index_ptr) {
				if (index > -1 && index <= 4000) {
					if (index < header->idx) {
						FREE(header->array[index]);
						header->array[index] = DUP(data);
					} else {
						int i;
						char **m;

						m = realloc(header->array, sizeof(char *) * (index + 1));
						switch_assert(m);
						header->array = m;
						for (i = header->idx; i < index; i++) {
							m[i] = DUP("");
						}
						m[index] = DUP(data);
						header->idx = index + 1;
						if (!fly) {
							exists = 1;
						}

						FREE(data);
						goto redraw;
					}
				} else if (tmp_header) {
					free_header(&tmp_header);
				}

				FREE(data);
				goto end;
			} else {
				if ((stack & SWITCH_STACK_PUSH) || (stack & SWITCH_STACK_UNSHIFT)) {
					exists++;
					stack &= ~(SWITCH_STACK_TOP | SWITCH_STACK_BOTTOM);
				} else {
					header = NULL;
				}
			}
		}
	}


	if (!header) {

		if (zstr(data)) {
			switch_event_del_header(event, header_name);
			FREE(data);
			goto end;
		}

		if (switch_test_flag(event, EF_UNIQ_HEADERS)) {
			switch_event_del_header(event, header_name);
		}

		if (!strncmp(data, "ARRAY::", 7)) {
			switch_event_add_array(event, header_name, data);
			FREE(data);
			goto end;
		}


		header = new_header(header_name);
	}

	if ((stack & SWITCH_STACK_PUSH) || (stack & SWITCH_STACK_UNSHIFT)) {
		char **m = NULL;
		switch_size_t len = 0;
		char *hv;
		int i = 0, j = 0;

		if (header->value && !header->idx) {
			m = malloc(sizeof(char *));
			switch_assert(m);
			m[0] = header->value;
			header->value = NULL;
			header->array = m;
			header->idx++;
			m = NULL;
		}

		i = header->idx + 1;
		m = realloc(header->array, sizeof(char *) * i);
		switch_assert(m);

		if ((stack & SWITCH_STACK_PUSH)) {
			m[header->idx] = data;
		} else if ((stack & SWITCH_STACK_UNSHIFT)) {
			for (j = header->idx; j > 0; j--) {
				m[j] = m[j-1];
			}
			m[0] = data;
		}

		header->idx++;
		header->array = m;

	redraw:
		len = 0;
		for(j = 0; j < header->idx; j++) {
			len += 2;
			if (!header->array[j]) { 
				continue;
			}
			len += strlen(header->array[j]);
		}

		if (len) {
			len += 8;
			hv = realloc(header->value, len);
			switch_assert(hv);
			header->value = hv;

			if (header->idx > 1) {
				switch_snprintf(header->value, len, "ARRAY::");
			} else {
				*header->value = '\0';
			}

			hv += strlen(header->value);
			for(j = 0; j < header->idx; j++) {
				if (j > 0) {
					memcpy(hv, "|:", 2);
					hv += 2;
				}
				if (!header->array[j]) { 
					continue;
				}
				memcpy(hv, header->array[j], strlen(header->array[j]));
				hv += strlen(header->array[j]);
			}
			*hv = '\0';
		}

	} else {
		switch_safe_free(header->value);
		header->value = data;
	}

	if (!exists) {
		header->hash = switch_ci_hashfunc_default(header->name, &hlen);

		if ((stack & SWITCH_STACK_TOP)) {
			header->next = event->headers;
			event->headers = header;
			if (!event->last_header) {
				event->last_header = header;
			}
		} else {
			if (event->last_header) {
				event->last_header->next = header;
			} else {
				event->headers = header;
				header->next = NULL;
			}
			event->last_header = header;
		}
	}

 end:

	switch_safe_free(real_header_name);

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_add_header(switch_event_t *event, switch_stack_t stack, const char *header_name, const char *fmt, ...)
{
	int ret = 0;
	char *data;
	va_list ap;

	va_start(ap, fmt);
	ret = switch_vasprintf(&data, fmt, ap);
	va_end(ap);

	if (ret == -1) {
		return SWITCH_STATUS_MEMERR;
	}

	return switch_event_base_add_header(event, stack, header_name, data);
}

SWITCH_DECLARE(switch_status_t) switch_event_set_subclass_name(switch_event_t *event, const char *subclass_name)
{
	if (!event || !subclass_name)
		return SWITCH_STATUS_GENERR;

	switch_safe_free(event->subclass_name);
	event->subclass_name = DUP(subclass_name);
	switch_event_del_header(event, "Event-Subclass");
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Event-Subclass", event->subclass_name);
	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_add_header_string_nodup(switch_event_t *event, switch_stack_t stack, const char *header_name, const char *data)
{
	if (data) {
		return switch_event_base_add_header(event, stack, header_name, (char *)data);
	}
	return SWITCH_STATUS_GENERR;
}

SWITCH_DECLARE(switch_status_t) switch_event_add_header_string(switch_event_t *event, switch_stack_t stack, const char *header_name, const char *data)
{
	if (data) {
		return switch_event_base_add_header(event, stack, header_name, DUP(data));
	}
	return SWITCH_STATUS_GENERR;
}

SWITCH_DECLARE(switch_status_t) switch_event_set_body(switch_event_t *event, const char *body)
{
	switch_safe_free(event->body);

	if (body) {
		event->body = DUP(body);
	}

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_add_body(switch_event_t *event, const char *fmt, ...)
{
	int ret = 0;
	char *data;

	va_list ap;
	if (fmt) {
		va_start(ap, fmt);
		ret = switch_vasprintf(&data, fmt, ap);
		va_end(ap);

		if (ret == -1) {
			return SWITCH_STATUS_GENERR;
		} else {
			switch_safe_free(event->body);
			event->body = data;
			return SWITCH_STATUS_SUCCESS;
		}
	} else {
		return SWITCH_STATUS_GENERR;
	}
}

SWITCH_DECLARE(void) switch_event_destroy(switch_event_t **event)
{
	switch_event_t *ep = *event;
	switch_event_header_t *hp, *this;

	if (ep) {
		for (hp = ep->headers; hp;) {
			this = hp;
			hp = hp->next;
			free_header(&this);
		}
		FREE(ep->body);
		FREE(ep->subclass_name);
#ifdef SWITCH_EVENT_RECYCLE
		if (switch_queue_trypush(EVENT_RECYCLE_QUEUE, ep) != SWITCH_STATUS_SUCCESS) {
			FREE(ep);
		}
#else
		FREE(ep);
#endif

	}
	*event = NULL;
}


SWITCH_DECLARE(void) switch_event_merge(switch_event_t *event, switch_event_t *tomerge)
{
	switch_event_header_t *hp;

	switch_assert(tomerge && event);

	for (hp = tomerge->headers; hp; hp = hp->next) {
		if (hp->idx) {
			int i;

			for(i = 0; i < hp->idx; i++) {
				switch_event_add_header_string(event, SWITCH_STACK_PUSH, hp->name, hp->array[i]);
			}
		} else {
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, hp->name, hp->value);
		}
	}
}

SWITCH_DECLARE(switch_status_t) switch_event_dup(switch_event_t **event, switch_event_t *todup)
{
	switch_event_header_t *hp;

	if (switch_event_create_subclass(event, SWITCH_EVENT_CLONE, todup->subclass_name) != SWITCH_STATUS_SUCCESS) {
		return SWITCH_STATUS_GENERR;
	}

	(*event)->event_id = todup->event_id;
	(*event)->event_user_data = todup->event_user_data;
	(*event)->bind_user_data = todup->bind_user_data;
	(*event)->flags = todup->flags;
	for (hp = todup->headers; hp; hp = hp->next) {
		if (todup->subclass_name && !strcmp(hp->name, "Event-Subclass")) {
			continue;
		}

		if (hp->idx) {
			int i;
			for (i = 0; i < hp->idx; i++) {
				switch_event_add_header_string(*event, SWITCH_STACK_PUSH, hp->name, hp->array[i]);
			}
		} else {
			switch_event_add_header_string(*event, SWITCH_STACK_BOTTOM, hp->name, hp->value);
		}
	}

	if (todup->body) {
		(*event)->body = DUP(todup->body);
	}

	(*event)->key = todup->key;

	return SWITCH_STATUS_SUCCESS;
}


SWITCH_DECLARE(switch_status_t) switch_event_dup_reply(switch_event_t **event, switch_event_t *todup)
{
	switch_event_header_t *hp;
	char hname[1024] = "";
	char *p;

	if (switch_event_create_subclass(event, SWITCH_EVENT_CLONE, todup->subclass_name) != SWITCH_STATUS_SUCCESS) {
		return SWITCH_STATUS_GENERR;
	}

	(*event)->event_id = todup->event_id;
	(*event)->event_user_data = todup->event_user_data;
	(*event)->bind_user_data = todup->bind_user_data;
	(*event)->flags = todup->flags;

	for (hp = todup->headers; hp; hp = hp->next) {
		char *name = hp->name, *value = hp->value;

		if (todup->subclass_name && !strcmp(hp->name, "Event-Subclass")) {
			continue;
		}

		if (!strncasecmp(hp->name, "from_", 5)) {
			p = hp->name + 5;
			switch_snprintf(hname, sizeof(hname), "to_%s", p);
			name = hname;
		} else if (!strncasecmp(hp->name, "to_", 3)) {
			p = hp->name + 3;
			switch_snprintf(hname, sizeof(hname), "from_%s", p);
			name = hname;
		} else if (!strcasecmp(name, "to")) {
			name = "from";
		} else if (!strcasecmp(name, "from")) {
			name = "to";
		}

		if (hp->idx) {
			int i;
			for (i = 0; i < hp->idx; i++) {
				switch_event_add_header_string(*event, SWITCH_STACK_PUSH, name, hp->array[i]);
			}
		} else {
			switch_event_add_header_string(*event, SWITCH_STACK_BOTTOM, name, value);
		}
	}

	switch_event_add_header_string(*event, SWITCH_STACK_BOTTOM, "replying", "true");

	if (todup->body) {
		switch_event_add_header_string(*event, SWITCH_STACK_BOTTOM, "orig_body", todup->body);
	}

	(*event)->key = todup->key;

	return SWITCH_STATUS_SUCCESS;
}

#define SWITCH_SERIALIZED_EVENT_MAP "S(iiisss)A(S(ss))"

SWITCH_DECLARE(switch_status_t) switch_event_binary_deserialize(switch_event_t **eventp, void **data, switch_size_t len, switch_bool_t destroy)
{
#ifdef HAVE_LIBTPL
	switch_event_t *event;
	tpl_node *tn;
	switch_serial_event_t e;
	switch_serial_event_header_t sh;
	int how = TPL_MEM;

	switch_event_create(&event, SWITCH_EVENT_CLONE);
	switch_assert(event);

	tn = tpl_map(SWITCH_SERIALIZED_EVENT_MAP, &e, &sh);

	if (!destroy) {
		how |= TPL_EXCESS_OK;
	}

	tpl_load(tn, how, data, len);

	tpl_unpack(tn, 0);

	event->event_id = e.event_id;
	event->priority = e.priority;
	event->flags = e.flags;

	event->owner = e.owner;
	event->subclass_name = e.subclass_name;
	event->body = e.body;


	while (tpl_unpack(tn, 1)) {
		switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, sh.name, sh.value);
	}

	*eventp = event;

	tpl_free(tn);

	if (destroy) {
		free(*data);
	}

	*data = NULL;

	return SWITCH_STATUS_SUCCESS;
#else
	return SWITCH_STATUS_FALSE;
#endif

}

SWITCH_DECLARE(switch_status_t) switch_event_binary_serialize(switch_event_t *event, void **data, switch_size_t *len)
{
#ifdef HAVE_LIBTPL
	tpl_node *tn;
	switch_serial_event_t e;
	switch_serial_event_header_t sh;
	switch_event_header_t *eh;
	int how = TPL_MEM;

	e.event_id = event->event_id;
	e.priority = event->priority;
	e.flags = event->flags;

	e.owner = event->owner;
	e.subclass_name = event->subclass_name;
	e.body = event->body;

	tn = tpl_map(SWITCH_SERIALIZED_EVENT_MAP, &e, &sh);

	tpl_pack(tn, 0);

	for (eh = event->headers; eh; eh = eh->next) {
		if (eh->idx) continue;  // no arrays yet

		sh.name = eh->name;
		sh.value = eh->value;

		tpl_pack(tn, 1);
	}

	if (*len > 0) {
		how |= TPL_PREALLOCD;
	}

	tpl_dump(tn, how, data, len);

	tpl_free(tn);

	return SWITCH_STATUS_SUCCESS;
#else
	return SWITCH_STATUS_FALSE;
#endif
}


SWITCH_DECLARE(switch_status_t) switch_event_serialize(switch_event_t *event, char **str, switch_bool_t encode)
{
	switch_size_t len = 0;
	switch_event_header_t *hp;
	switch_size_t llen = 0, dlen = 0, blocksize = 512, encode_len = 1536, new_len = 0;
	char *buf;
	char *encode_buf = NULL;	/* used for url encoding of variables to make sure unsafe things stay out of the serialized copy */

	*str = NULL;

	dlen = blocksize * 2;

	if (!(buf = malloc(dlen))) {
		abort();
	}

	/* go ahead and give ourselves some space to work with, should save a few reallocs */
	if (!(encode_buf = malloc(encode_len))) {
		abort();
	}

	/* switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "hit serialized!.\n"); */
	for (hp = event->headers; hp; hp = hp->next) {
		/*
		 * grab enough memory to store 3x the string (url encode takes one char and turns it into %XX)
		 * so we could end up with a string that is 3 times the originals length, unlikely but rather
		 * be safe than destroy the string, also add one for the null.  And try to be smart about using
		 * the memory, allocate and only reallocate if we need more.  This avoids an alloc, free CPU
		 * destroying loop.
		 */

		if (hp->idx) {
			int i;
			new_len = 0;
			for(i = 0; i < hp->idx; i++) {
				new_len += (strlen(hp->array[i]) * 3) + 1;
			}
		} else {
			new_len = (strlen(hp->value) * 3) + 1;
		}

		if (encode_len < new_len) {
			char *tmp;

			/* keep track of the size of our allocation */
			encode_len = new_len;

			if (!(tmp = realloc(encode_buf, encode_len))) {
				abort();
			}

			encode_buf = tmp;
		}

		/* handle any bad things in the string like newlines : etc that screw up the serialized format */


		if (encode) {
			switch_url_encode(hp->value, encode_buf, encode_len);
		} else {
			switch_snprintf(encode_buf, encode_len, "[%s]", hp->value);
		}


		llen = strlen(hp->name) + strlen(encode_buf) + 8;

		if ((len + llen) > dlen) {
			char *m = NULL;
			dlen += (blocksize + (len + llen));
			if (!(m = realloc(buf, dlen))) {
				abort();
			}
			buf = m;
		}

		switch_snprintf(buf + len, dlen - len, "%s: %s\n", hp->name, *encode_buf == '\0' ? "_undef_" : encode_buf);
		len = strlen(buf);
	}

	/* we are done with the memory we used for encoding, give it back */
	switch_safe_free(encode_buf);

	if (event->body) {
		int blen = (int) strlen(event->body);
		llen = blen;

		if (blen) {
			llen += 25;
		} else {
			llen += 5;
		}

		if ((len + llen) > dlen) {
			char *m = NULL;
			dlen += (blocksize + (len + llen));
			if (!(m = realloc(buf, dlen))) {
				abort();
			}
			buf = m;
		}

		if (blen) {
			switch_snprintf(buf + len, dlen - len, "Content-Length: %d\n\n%s", blen, event->body);
		} else {
			switch_snprintf(buf + len, dlen - len, "\n");
		}
	} else {
		switch_snprintf(buf + len, dlen - len, "\n");
	}

	*str = buf;

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_create_array_pair(switch_event_t **event, char **names, char **vals, int len)
{
	int r;
	char *name, *val;

	switch_event_create(event, SWITCH_EVENT_CLONE);

	for (r = 0; r < len; r++) {
		val = switch_str_nil(vals[r]);
		name = names[r];

		if (zstr(name)) {
			name = "Unknown";
		}

		switch_event_add_header_string(*event, SWITCH_STACK_BOTTOM, name, val);
	}

	return SWITCH_STATUS_SUCCESS;

}

SWITCH_DECLARE(switch_status_t) switch_event_create_brackets(char *data, char a, char b, char c, switch_event_t **event, char **new_data, switch_bool_t dup)
{
	char *vdata, *vdatap = NULL;
	char *end, *check_a, *check_b;
	switch_event_t *e = *event;
	char *var_array[1024] = { 0 };
	int var_count = 0;
	char *next = NULL, *vnext = NULL;

	if (dup) {
		vdatap = strdup(data);
		vdata = vdatap;
	} else {
		vdata = data;
	}

	end = switch_find_end_paren(vdata, a, b);

	check_a = end;

	while (check_a && (check_b = switch_strchr_strict(check_a, a, " "))) {
		if ((check_b = switch_find_end_paren(check_b, a, b))) {
			check_a = check_b;
		}
	}

	if (check_a) end = check_a;

	if (end) {
		next = end;
		vdata++;
		*end++ = '\0';
	} else {
		if (dup) {
			free(vdatap);
		}
		return SWITCH_STATUS_FALSE;
	}

	if (!e) {
		switch_event_create_plain(&e, SWITCH_EVENT_CHANNEL_DATA);
		e->flags |= EF_UNIQ_HEADERS;
	}


	for (;;) {
		if (next) {
			char *pnext;

			*next++ = '\0';

			if ((pnext = switch_strchr_strict(next, a, " "))) {
				next = pnext + 1;
			}

			vnext = switch_find_end_paren(next, a, b);
			next = NULL;
		}


		if (vdata) {
			if (*vdata == '^' && *(vdata + 1) == '^') {
				vdata += 2;
				c = *vdata++;
			}
		}

		if ((var_count = switch_separate_string(vdata, c, var_array, (sizeof(var_array) / sizeof(var_array[0]))))) {
			int x = 0;
			for (x = 0; x < var_count; x++) {
				char *inner_var_array[2] = { 0 };

				if (switch_separate_string(var_array[x], '=', inner_var_array, (sizeof(inner_var_array) / sizeof(inner_var_array[0]))) == 2) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "Parsing variable [%s]=[%s]\n", inner_var_array[0], inner_var_array[1]);
					switch_event_add_header_string(e, SWITCH_STACK_BOTTOM, inner_var_array[0], inner_var_array[1]);
				}
			}
		}

		if (vnext) {
			vdata = vnext;
			vnext = NULL;
		} else {
			break;
		}

	}

	*event = e;

	if (dup) {
		*new_data = strdup(end);
		free(vdatap);
	} else {
		*new_data = end;
	}

	return SWITCH_STATUS_SUCCESS;

}



SWITCH_DECLARE(switch_status_t) switch_event_create_json(switch_event_t **event, const char *json)
{
	switch_event_t *new_event;
	cJSON *cj, *cjp;


	if (!(cj = cJSON_Parse(json))) {
		return SWITCH_STATUS_FALSE;
	}

	if (switch_event_create(&new_event, SWITCH_EVENT_CLONE) != SWITCH_STATUS_SUCCESS) {
		cJSON_Delete(cj);
		return SWITCH_STATUS_FALSE;
	}

	for (cjp = cj->child; cjp; cjp = cjp->next) {
		char *name = cjp->string;
		char *value = cjp->valuestring;

		if (name && value) {
			if (!strcasecmp(name, "_body")) {
				switch_event_add_body(new_event, value, SWITCH_VA_NONE);
			} else {
				if (!strcasecmp(name, "event-name")) {
					switch_event_del_header(new_event, "event-name");
					switch_name_event(value, &new_event->event_id);
				}

				switch_event_add_header_string(new_event, SWITCH_STACK_BOTTOM, name, value);
			}

		} else if (name) {
			if (cjp->type == cJSON_Array) {
				int i, x = cJSON_GetArraySize(cjp);

				for (i = 0; i < x; i++) {
					cJSON *item = cJSON_GetArrayItem(cjp, i);

					if (item && item->type == cJSON_String && item->valuestring) {
						switch_event_add_header_string(new_event, SWITCH_STACK_PUSH, name, item->valuestring);
					}
				}
			}
		}
	}

	cJSON_Delete(cj);
	*event = new_event;
	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_serialize_json_obj(switch_event_t *event, cJSON **json)
{
	switch_event_header_t *hp;
	cJSON *cj;

	cj = cJSON_CreateObject();

	for (hp = event->headers; hp; hp = hp->next) {
		if (hp->idx) {
			cJSON *a = cJSON_CreateArray();
			int i;

			for(i = 0; i < hp->idx; i++) {
				cJSON_AddItemToArray(a, cJSON_CreateString(hp->array[i]));
			}

			cJSON_AddItemToObject(cj, hp->name, a);

		} else {
			cJSON_AddItemToObject(cj, hp->name, cJSON_CreateString(hp->value));
		}
	}

	if (event->body) {
		int blen = (int) strlen(event->body);
		char tmp[25];

		switch_snprintf(tmp, sizeof(tmp), "%d", blen);

		cJSON_AddItemToObject(cj, "Content-Length", cJSON_CreateString(tmp));
		cJSON_AddItemToObject(cj, "_body", cJSON_CreateString(event->body));
	}

	*json = cj;

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_serialize_json(switch_event_t *event, char **str)
{

	cJSON *cj;
	*str = NULL;

	if (switch_event_serialize_json_obj(event, &cj) == SWITCH_STATUS_SUCCESS) {
		*str = cJSON_PrintUnformatted(cj);
		cJSON_Delete(cj);

		return SWITCH_STATUS_SUCCESS;
	}

	return SWITCH_STATUS_FALSE;
}

static switch_xml_t add_xml_header(switch_xml_t xml, char *name, char *value, int offset)
{
	switch_xml_t header = switch_xml_add_child_d(xml, name, offset);

	if (header) {
		switch_size_t encode_len = (strlen(value) * 3) + 1;
		char *encode_buf = malloc(encode_len);

		switch_assert(encode_buf);

		memset(encode_buf, 0, encode_len);
		switch_url_encode((char *) value, encode_buf, encode_len);
		switch_xml_set_txt_d(header, encode_buf);
		free(encode_buf);
	}

	return header;
}

SWITCH_DECLARE(switch_xml_t) switch_event_xmlize(switch_event_t *event, const char *fmt,...)
{
	switch_event_header_t *hp;
	char *data = NULL, *body = NULL;
	int ret = 0;
	switch_xml_t xml = NULL;
	uint32_t off = 0;
	va_list ap;
	switch_xml_t xheaders = NULL;

	if (!(xml = switch_xml_new("event"))) {
		return xml;
	}

	if (!zstr(fmt)) {
		va_start(ap, fmt);
#ifdef HAVE_VASPRINTF
		ret = vasprintf(&data, fmt, ap);
#else
		data = (char *) malloc(2048);
		if (!data) {
			va_end(ap);
			switch_xml_free(xml);

			return NULL;
		}
		ret = vsnprintf(data, 2048, fmt, ap);
#endif
		va_end(ap);
		if (ret == -1) {
#ifndef HAVE_VASPRINTF
			free(data);
#endif
			switch_xml_free(xml);

			return NULL;
		}
	}

	if ((xheaders = switch_xml_add_child_d(xml, "headers", off++))) {
		int hoff = 0;
		for (hp = event->headers; hp; hp = hp->next) {

			if (hp->idx) {
				int i;
				for (i = 0; i < hp->idx; i++) {
					add_xml_header(xheaders, hp->name, hp->array[i], hoff++);
				}
			} else {
				add_xml_header(xheaders, hp->name, hp->value, hoff++);
			}
		}
	}

	if (!zstr(data)) {
		body = data;
	} else if (event->body) {
		body = event->body;
	}

	if (body) {
		int blen = (int) strlen(body);
		char blena[25];
		switch_snprintf(blena, sizeof(blena), "%d", blen);
		if (blen) {
			switch_xml_t xbody = NULL;

			add_xml_header(xml, "Content-Length", blena, off++);
			if ((xbody = switch_xml_add_child_d(xml, "body", off++))) {
				switch_xml_set_txt_d(xbody, body);
			}
		}
	}

	if (data) {
		free(data);
	}

	return xml;
}

SWITCH_DECLARE(void) switch_event_prep_for_delivery_detailed(const char *file, const char *func, int line, switch_event_t *event)
{
	switch_time_exp_t tm;
	char date[80] = "";
	switch_size_t retsize;
	switch_time_t ts = switch_micro_time_now();
	uint64_t seq;

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	seq = ++EVENT_SEQUENCE_NR;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);


	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Event-Name", switch_event_name(event->event_id));
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Core-UUID", switch_core_get_uuid());
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "FreeSWITCH-Hostname", switch_core_get_hostname());
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "FreeSWITCH-Switchname", switch_core_get_switchname());
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "FreeSWITCH-IPv4", guess_ip_v4);
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "FreeSWITCH-IPv6", guess_ip_v6);

	switch_time_exp_lt(&tm, ts);
	switch_strftime_nocheck(date, &retsize, sizeof(date), "%Y-%m-%d %T", &tm);
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Event-Date-Local", date);
	switch_rfc822_date(date, ts);
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Event-Date-GMT", date);
	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Event-Date-Timestamp", "%" SWITCH_UINT64_T_FMT, (uint64_t) ts);
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Event-Calling-File", switch_cut_path(file));
	switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, "Event-Calling-Function", func);
	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Event-Calling-Line-Number", "%d", line);
	switch_event_add_header(event, SWITCH_STACK_BOTTOM, "Event-Sequence", "%" SWITCH_UINT64_T_FMT, seq);


}

SWITCH_DECLARE(switch_status_t) switch_event_fire_detailed(const char *file, const char *func, int line, switch_event_t **event, void *user_data)
{

	switch_assert(BLOCK != NULL);
	switch_assert(RUNTIME_POOL != NULL);
	switch_assert(EVENT_QUEUE_MUTEX != NULL);
	switch_assert(RUNTIME_POOL != NULL);

	if (SYSTEM_RUNNING <= 0) {
		/* sorry we're closed */
		switch_event_destroy(event);
		return SWITCH_STATUS_SUCCESS;
	}

	if (user_data) {
		(*event)->event_user_data = user_data;
	}



	if (runtime.events_use_dispatch) {
		check_dispatch();

		if (switch_event_queue_dispatch_event(event) != SWITCH_STATUS_SUCCESS) {
			switch_event_destroy(event);
			return SWITCH_STATUS_FALSE;
		}
	} else {
		switch_event_deliver_thread_pool(event);
	}

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_event_get_custom_events(switch_console_callback_match_t **matches)
{
	switch_hash_index_t *hi = NULL;
	const void *var;
	void *val;
	int x = 0;

	switch_mutex_lock(CUSTOM_HASH_MUTEX);

	for (hi = switch_core_hash_first(CUSTOM_HASH); hi; hi = switch_core_hash_next(&hi)) {
		switch_core_hash_this(hi, &var, NULL, &val);
		switch_console_push_match(matches, (const char *) var);
		x++;
	}

	switch_mutex_unlock(CUSTOM_HASH_MUTEX);

	return x ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}

SWITCH_DECLARE(switch_status_t) switch_event_bind_removable(const char *id, switch_event_types_t event, const char *subclass_name,
															switch_event_callback_t callback, void *user_data, switch_event_node_t **node)
{
	switch_event_node_t *event_node;
	switch_event_subclass_t *subclass = NULL;

	switch_assert(BLOCK != NULL);
	switch_assert(RUNTIME_POOL != NULL);

	if (node) {
		*node = NULL;
	}

	if (subclass_name) {
		switch_mutex_lock(CUSTOM_HASH_MUTEX);

		if (!(subclass = switch_core_hash_find(CUSTOM_HASH, subclass_name))) {
			if (switch_event_reserve_subclass_detailed(id, subclass_name) == SWITCH_STATUS_SUCCESS) {
				if ((subclass = switch_core_hash_find(CUSTOM_HASH, subclass_name))) {
					subclass->bind = 1;
				}
			}
		}

		switch_mutex_unlock(CUSTOM_HASH_MUTEX);

		if (!subclass) {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not reserve subclass. '%s'\n", subclass_name);

			return SWITCH_STATUS_FALSE;
		}
	}

	if (event <= SWITCH_EVENT_ALL) {
		switch_zmalloc(event_node, sizeof(*event_node));
		switch_thread_rwlock_wrlock(RWLOCK);
		switch_mutex_lock(BLOCK);
		/* <LOCKED> ----------------------------------------------- */
		event_node->id = DUP(id);
		event_node->event_id = event;
		if (subclass_name) {
			event_node->subclass_name = DUP(subclass_name);
		}

		event_node->callback = callback;
		event_node->user_data = user_data;

		if (EVENT_NODES[event]) {
			event_node->next = EVENT_NODES[event];
		}

		EVENT_NODES[event] = event_node;
		switch_mutex_unlock(BLOCK);
		switch_thread_rwlock_unlock(RWLOCK);
		/* </LOCKED> ----------------------------------------------- */

		if (node) {
			*node = event_node;
		}

		return SWITCH_STATUS_SUCCESS;
	}

	return SWITCH_STATUS_MEMERR;
}


SWITCH_DECLARE(switch_status_t) switch_event_bind(const char *id, switch_event_types_t event, const char *subclass_name,
												  switch_event_callback_t callback, void *user_data)
{
	return switch_event_bind_removable(id, event, subclass_name, callback, user_data, NULL);
}


SWITCH_DECLARE(switch_status_t) switch_event_unbind_callback(switch_event_callback_t callback)
{
	switch_event_node_t *n, *np, *lnp = NULL;
	switch_status_t status = SWITCH_STATUS_FALSE;
	int id;

	switch_thread_rwlock_wrlock(RWLOCK);
	switch_mutex_lock(BLOCK);
	/* <LOCKED> ----------------------------------------------- */
	for (id = 0; id <= SWITCH_EVENT_ALL; id++) {
		lnp = NULL;

		for (np = EVENT_NODES[id]; np;) {
			n = np;
			np = np->next;
			if (n->callback == callback) {
				if (lnp) {
					lnp->next = n->next;
				} else {
					EVENT_NODES[n->event_id] = n->next;
				}

				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Event Binding deleted for %s:%s\n", n->id, switch_event_name(n->event_id));
				FREE(n->subclass_name);
				FREE(n->id);
				FREE(n);
				status = SWITCH_STATUS_SUCCESS;
			} else {
				lnp = n;
			}
		}
	}
	switch_mutex_unlock(BLOCK);
	switch_thread_rwlock_unlock(RWLOCK);
	/* </LOCKED> ----------------------------------------------- */

	return status;
}



SWITCH_DECLARE(switch_status_t) switch_event_unbind(switch_event_node_t **node)
{
	switch_event_node_t *n, *np, *lnp = NULL;
	switch_status_t status = SWITCH_STATUS_FALSE;

	n = *node;

	if (!n) {
		return status;
	}

	switch_thread_rwlock_wrlock(RWLOCK);
	switch_mutex_lock(BLOCK);
	/* <LOCKED> ----------------------------------------------- */
	for (np = EVENT_NODES[n->event_id]; np; np = np->next) {
		if (np == n) {
			if (lnp) {
				lnp->next = n->next;
			} else {
				EVENT_NODES[n->event_id] = n->next;
			}
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Event Binding deleted for %s:%s\n", n->id, switch_event_name(n->event_id));
			FREE(n->subclass_name);
			FREE(n->id);
			FREE(n);
			*node = NULL;
			status = SWITCH_STATUS_SUCCESS;
			break;
		}
		lnp = np;
	}
	switch_mutex_unlock(BLOCK);
	switch_thread_rwlock_unlock(RWLOCK);
	/* </LOCKED> ----------------------------------------------- */

	return status;
}

SWITCH_DECLARE(switch_status_t) switch_event_create_pres_in_detailed(char *file, char *func, int line,
																	 const char *proto, const char *login,
																	 const char *from, const char *from_domain,
																	 const char *status, const char *event_type,
																	 const char *alt_event_type, int event_count,
																	 const char *unique_id, const char *channel_state,
																	 const char *answer_state, const char *call_direction)
{
	switch_event_t *pres_event;

	if (switch_event_create_subclass(&pres_event, SWITCH_EVENT_PRESENCE_IN, SWITCH_EVENT_SUBCLASS_ANY) == SWITCH_STATUS_SUCCESS) {
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "proto", proto);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "login", login);
		switch_event_add_header(pres_event, SWITCH_STACK_TOP, "from", "%s@%s", from, from_domain);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "status", status);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "event_type", event_type);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "alt_event_type", alt_event_type);
		switch_event_add_header(pres_event, SWITCH_STACK_TOP, "event_count", "%d", event_count);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "unique-id", alt_event_type);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "channel-state", channel_state);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "answer-state", answer_state);
		switch_event_add_header_string(pres_event, SWITCH_STACK_TOP, "presence-call-direction", call_direction);
		switch_event_fire_detailed(file, func, line, &pres_event, NULL);
		return SWITCH_STATUS_SUCCESS;
	}
	return SWITCH_STATUS_MEMERR;
}

#define resize(l) {\
char *dp;\
olen += (len + l + block);\
cpos = c - data;\
if ((dp = realloc(data, olen))) {\
	data = dp;\
	c = data + cpos;\
	memset(c, 0, olen - cpos);\
 }}                           \

SWITCH_DECLARE(char *) switch_event_expand_headers_check(switch_event_t *event, const char *in, switch_event_t *var_list, switch_event_t *api_list, uint32_t recur)
{
	char *p, *c = NULL;
	char *data, *indup, *endof_indup;
	size_t sp = 0, len = 0, olen = 0, vtype = 0, br = 0, cpos, block = 128;
	const char *sub_val = NULL;
	char *cloned_sub_val = NULL, *expanded_sub_val = NULL;
	char *func_val = NULL;
	int nv = 0;
	char *gvar = NULL, *sb = NULL;

	if (recur > 100) {
		return (char *) in;
	}

	if (zstr(in)) {
		return (char *) in;
	}

	nv = switch_string_var_check_const(in) || switch_string_has_escaped_data(in);

	if (!nv) {
		return (char *) in;
	}

	nv = 0;
	olen = strlen(in) + 1;
	indup = strdup(in);
	switch_assert(indup);
	endof_indup = end_of_p(indup) + 1;

	if ((data = malloc(olen))) {
		memset(data, 0, olen);
		c = data;
		for (p = indup; p && p < endof_indup && *p; p++) {
			int global = 0;
			vtype = 0;

			if (*p == '\\') {
				if (*(p + 1) == '$') {
					nv = 1;
					p++;
					if (*(p + 1) == '$') {
						p++;
					}
				} else if (*(p + 1) == '\'') {
					p++;
					continue;
				} else if (*(p + 1) == '\\') {
					if (len + 1 >= olen) {
						resize(1);
					}

					*c++ = *p++;
					len++;
					continue;
				}
			}

			if (*p == '$' && !nv) {
				if (*(p + 1) == '$') {
					p++;
					global++;
				}

				if (*(p + 1)) {
					if (*(p + 1) == '{') {
						vtype = global ? 3 : 1;
					} else {
						nv = 1;
					}
				} else {
					nv = 1;
				}
			}

			if (nv) {
				if (len + 1 >= olen) {
					resize(1);
				}

				*c++ = *p;
				len++;
				nv = 0;
				continue;
			}

			if (vtype) {
				char *s = p, *e, *vname, *vval = NULL;
				size_t nlen;

				s++;

				if ((vtype == 1 || vtype == 3) && *s == '{') {
					br = 1;
					s++;
				}

				e = s;
				vname = s;
				while (*e) {
					if (br == 1 && *e == '}') {
						br = 0;
						*e++ = '\0';
						break;
					}

					if (br > 0) {
						if (e != s && *e == '{') {
							br++;
						} else if (br > 1 && *e == '}') {
							br--;
						}
					}

					e++;
				}
				p = e > endof_indup ? endof_indup : e;

				vval = NULL;
				for(sb = vname; sb && *sb; sb++) {
					if (*sb == ' ') {
						vval = sb;
						break;
					} else if (*sb == '(') {
						vval = sb;
						br = 1;
						break;
					}
				}

				if (vval) {
					e = vval - 1;
					*vval++ = '\0';

					while (*e == ' ') {
						*e-- = '\0';
					}
					e = vval;

					while (e && *e) {
						if (*e == '(') {
							br++;
						} else if (br > 1 && *e == ')') {
							br--;
						} else if (br == 1 && *e == ')') {
							*e = '\0';
							break;
						}
						e++;
					}

					vtype = 2;
				}

				if (vtype == 1 || vtype == 3) {
					char *expanded = NULL;
					int offset = 0;
					int ooffset = 0;
					char *ptr;
					int idx = -1;

					if ((expanded = switch_event_expand_headers_check(event, (char *) vname, var_list, api_list, recur+1)) == vname) {
						expanded = NULL;
					} else {
						vname = expanded;
					}
					if ((ptr = strchr(vname, ':'))) {
						*ptr++ = '\0';
						offset = atoi(ptr);
						if ((ptr = strchr(ptr, ':'))) {
							ptr++;
							ooffset = atoi(ptr);
						}
					}

					if ((ptr = strchr(vname, '[')) && strchr(ptr, ']')) {
						*ptr++ = '\0';
						idx = atoi(ptr);
					}

					if (vtype == 3 || !(sub_val = switch_event_get_header_idx(event, vname, idx))) {
						switch_safe_free(gvar);
						if ((gvar = switch_core_get_variable_dup(vname))) {
							sub_val = gvar;
						}

						if (var_list && !switch_event_check_permission_list(var_list, vname)) {
							sub_val = "<Variable Expansion Permission Denied>";
						}


						if ((expanded_sub_val = switch_event_expand_headers_check(event, sub_val, var_list, api_list, recur+1)) == sub_val) {
							expanded_sub_val = NULL;
						} else {
							sub_val = expanded_sub_val;
						}
					}

					if (sub_val) {
						if (offset || ooffset) {
							cloned_sub_val = strdup(sub_val);
							switch_assert(cloned_sub_val);
							sub_val = cloned_sub_val;
						}

						if (offset >= 0) {
							sub_val += offset;
						} else if ((size_t) abs(offset) <= strlen(sub_val)) {
							sub_val = cloned_sub_val + (strlen(cloned_sub_val) + offset);
						}

						if (ooffset > 0 && (size_t) ooffset < strlen(sub_val)) {
							if ((ptr = (char *) sub_val + ooffset)) {
								*ptr = '\0';
							}
						}
					}

					switch_safe_free(expanded);
				} else {
					switch_stream_handle_t stream = { 0 };
					char *expanded = NULL;
					char *expanded_vname = NULL;

					if ((expanded_vname = switch_event_expand_headers_check(event, (char *) vname, var_list, api_list, recur+1)) == vname) {
						expanded_vname = NULL;
					} else {
						vname = expanded_vname;
					}

					if ((expanded = switch_event_expand_headers_check(event, vval, var_list, api_list, recur+1)) == vval) {
						expanded = NULL;
					} else {
						vval = expanded;
					}

					if (!switch_core_test_flag(SCF_API_EXPANSION) || (api_list && !switch_event_check_permission_list(api_list, vname))) {
						func_val = NULL;
						sub_val = "<API execute Permission Denied>";
					} else {
						SWITCH_STANDARD_STREAM(stream);
						if (switch_api_execute(vname, vval, NULL, &stream) == SWITCH_STATUS_SUCCESS) {
							func_val = stream.data;
							sub_val = func_val;
						} else {
							free(stream.data);
						}
					}

					switch_safe_free(expanded);
					switch_safe_free(expanded_vname);
				}
				if ((nlen = sub_val ? strlen(sub_val) : 0)) {
					if (len + nlen >= olen) {
						resize(nlen);
					}

					len += nlen;
					strcat(c, sub_val);
					c += nlen;
				}

				switch_safe_free(func_val);
				switch_safe_free(cloned_sub_val);
				switch_safe_free(expanded_sub_val);
				sub_val = NULL;
				vname = NULL;
				br = 0;
			}

			if (sp) {
				if (len + 1 >= olen) {
					resize(1);
				}

				*c++ = ' ';
				sp = 0;
				len++;
			}

			if (*p == '$') {
				p--;
			} else {
				if (len + 1 >= olen) {
					resize(1);
				}

				*c++ = *p;
				len++;
			}
		}
	}
	free(indup);
	switch_safe_free(gvar);

	return data;
}

SWITCH_DECLARE(char *) switch_event_build_param_string(switch_event_t *event, const char *prefix, switch_hash_t *vars_map)
{
	switch_stream_handle_t stream = { 0 };
	switch_size_t encode_len = 1024, new_len = 0;
	char *encode_buf = NULL;
	const char *prof[12] = { 0 }, *prof_names[12] = {
	0};
	char *e = NULL;
	switch_event_header_t *hi;
	uint32_t x = 0;
	void *data = NULL;

	SWITCH_STANDARD_STREAM(stream);

	if (prefix) {
		stream.write_function(&stream, "%s&", prefix);
	}

	encode_buf = malloc(encode_len);
	switch_assert(encode_buf);



	for (x = 0; prof[x]; x++) {
		if (zstr(prof[x])) {
			continue;
		}
		new_len = (strlen(prof[x]) * 3) + 1;
		if (encode_len < new_len) {
			char *tmp;

			encode_len = new_len;

			if (!(tmp = realloc(encode_buf, encode_len))) {
				abort();
			}

			encode_buf = tmp;
		}
		switch_url_encode(prof[x], encode_buf, encode_len);
		stream.write_function(&stream, "%s=%s&", prof_names[x], encode_buf);
	}

	if (event) {
		if ((hi = event->headers)) {

			for (; hi; hi = hi->next) {
				char *var = hi->name;
				char *val = hi->value;

				if (vars_map != NULL) {
					if ((data = switch_core_hash_find(vars_map, var)) == NULL || strcasecmp(((char *) data), "enabled"))
						continue;

				}

				new_len = (strlen((char *) val) * 3) + 1;
				if (encode_len < new_len) {
					char *tmp;

					encode_len = new_len;

					tmp = realloc(encode_buf, encode_len);
					switch_assert(tmp);
					encode_buf = tmp;
				}

				switch_url_encode((char *) val, encode_buf, encode_len);
				stream.write_function(&stream, "%s=%s&", (char *) var, encode_buf);

			}
		}
	}

	e = (char *) stream.data + (strlen((char *) stream.data) - 1);

	if (e && *e == '&') {
		*e = '\0';
	}

	switch_safe_free(encode_buf);

	return stream.data;
}

SWITCH_DECLARE(int) switch_event_check_permission_list(switch_event_t *list, const char *name)
{
	const char *v;
	int r = 0;
	int default_allow = 0;

	if (!list) {
		return 1;
	}

	default_allow = switch_test_flag(list, EF_DEFAULT_ALLOW);

	if (!list->headers) {
		return default_allow;
	}

	if ((v = switch_event_get_header(list, name))) {
		if (*v == 'd') {
			r = 0;
		} else {
			r = 1;
		}
	} else {
		r = default_allow;
	}

	return r;
}

SWITCH_DECLARE(void) switch_json_add_presence_data_cols(switch_event_t *event, cJSON *json, const char *prefix)
{
	const char *data;

	if (!prefix) prefix = "";

	if ((data = switch_event_get_header(event, "presence_data_cols"))) {
		char *cols[128] = { 0 };
		char header_name[128] = "";
		int col_count = 0, i = 0;
		char *data_copy = NULL;

		data_copy = strdup(data);

		col_count = switch_split(data_copy, ':', cols);

		for (i = 0; i < col_count; i++) {
			const char *val = NULL;
			switch_snprintf(header_name, sizeof(header_name), "%s%s", prefix, cols[i]);

			val = switch_event_get_header(event, cols[i]);
			json_add_child_string(json, header_name, val);
		}

		switch_safe_free(data_copy);
	}

}


SWITCH_DECLARE(void) switch_event_add_presence_data_cols(switch_channel_t *channel, switch_event_t *event, const char *prefix)
{
	const char *data;

	if (!prefix) prefix = "";

	if ((data = switch_channel_get_variable(channel, "presence_data_cols"))) {
		char *cols[128] = { 0 };
		char header_name[128] = "";
		int col_count = 0, i = 0;
		char *data_copy = NULL;

		data_copy = strdup(data);

		col_count = switch_split(data_copy, ':', cols);

		for (i = 0; i < col_count; i++) {
			const char *val = NULL;
			switch_snprintf(header_name, sizeof(header_name), "%s%s", prefix, cols[i]);

			val = switch_channel_get_variable(channel, cols[i]);
			switch_event_add_header_string(event, SWITCH_STACK_BOTTOM, header_name, val);
		}

		switch_safe_free(data_copy);
	}

}

struct switch_event_channel_sub_node_head_s;
typedef struct switch_event_channel_sub_node_s {
	switch_event_channel_func_t func;
	void *user_data;
	switch_event_channel_id_t id;
	struct switch_event_channel_sub_node_head_s *head;
	struct switch_event_channel_sub_node_s *next;
} switch_event_channel_sub_node_t;

typedef struct switch_event_channel_sub_node_head_s {
	switch_event_channel_sub_node_t *node;
	switch_event_channel_sub_node_t *tail;
	char *event_channel;
} switch_event_channel_sub_node_head_t;

static uint32_t switch_event_channel_unsub_head(switch_event_channel_func_t func, switch_event_channel_sub_node_head_t *head, void *user_data)
{
	uint32_t x = 0;

	switch_event_channel_sub_node_t *thisnp = NULL, *np, *last = NULL;

	np = head->tail = head->node;

	while (np) {

		thisnp = np;
		np = np->next;

		if (!(func) || (thisnp->func == func && (thisnp->user_data == user_data || user_data == NULL))) {
			x++;

			if (last) {
				last->next = np;
			} else {
				head->node = np;
			}


			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "UNSUBBING %p [%s]\n", (void *)(intptr_t)thisnp->func, thisnp->head->event_channel);


			thisnp->func = NULL;
			free(thisnp);
		} else {
			last = thisnp;
			head->tail = last;
		}
	}

	return x;
}

static void unsub_all_switch_event_channel(void)
{
	switch_hash_index_t *hi = NULL;
	const void *var;
	void *val;
	switch_event_channel_sub_node_head_t *head;

	switch_thread_rwlock_wrlock(event_channel_manager.rwlock);

	while ((hi = switch_core_hash_first_iter( event_channel_manager.perm_hash, hi))) {
		switch_event_t *vals = NULL;
		switch_core_hash_this(hi, &var, NULL, &val);
		vals = (switch_event_t *) val;
		switch_core_hash_delete(event_channel_manager.perm_hash, var);
		switch_event_destroy(&vals);
	}

	while ((hi = switch_core_hash_first_iter( event_channel_manager.hash, hi))) {
		switch_core_hash_this(hi, NULL, NULL, &val);
		head = (switch_event_channel_sub_node_head_t *) val;
		switch_event_channel_unsub_head(NULL, head, NULL);
		switch_core_hash_delete(event_channel_manager.hash, head->event_channel);
		free(head->event_channel);
		free(head);
	}

	switch_safe_free(hi);
	switch_thread_rwlock_unlock(event_channel_manager.rwlock);
}

static uint32_t switch_event_channel_unsub_channel(switch_event_channel_func_t func, const char *event_channel, void *user_data)
{
	switch_event_channel_sub_node_head_t *head;
	uint32_t x = 0;

	switch_thread_rwlock_wrlock(event_channel_manager.rwlock);

	if (!event_channel) {
		switch_hash_index_t *hi;
		void *val;

		for (hi = switch_core_hash_first(event_channel_manager.hash); hi; hi = switch_core_hash_next(&hi)) {
			switch_core_hash_this(hi, NULL, NULL, &val);

			if (val) {
				head = (switch_event_channel_sub_node_head_t *) val;
				x += switch_event_channel_unsub_head(func, head, user_data);
			}
		}

	} else {
		if ((head = switch_core_hash_find(event_channel_manager.hash, event_channel))) {
			x += switch_event_channel_unsub_head(func, head, user_data);
		}
	}

	switch_thread_rwlock_unlock(event_channel_manager.rwlock);

	return x;
}

static switch_status_t switch_event_channel_sub_channel(const char *event_channel, switch_event_channel_func_t func, switch_event_channel_id_t id, void *user_data)

{
	switch_event_channel_sub_node_t *node, *np;
	switch_event_channel_sub_node_head_t *head;
	switch_status_t status = SWITCH_STATUS_FALSE;

	switch_thread_rwlock_wrlock(event_channel_manager.rwlock);

	if (!(head = switch_core_hash_find(event_channel_manager.hash, event_channel))) {
		switch_zmalloc(head, sizeof(*head));
		head->event_channel = strdup(event_channel);
		switch_core_hash_insert(event_channel_manager.hash, event_channel, head);

		switch_zmalloc(node, sizeof(*node));
		node->func = func;
		node->user_data = user_data;
		node->id = id;

		node->head = head;
		head->node = node;
		head->tail = node;
		status = SWITCH_STATUS_SUCCESS;
	} else {
		int exist = 0;

		for (np = head->node; np; np = np->next) {
			if (np->func == func && np->user_data == user_data) {
				exist = 1;
				break;
			}
		}

		if (!exist) {
			switch_zmalloc(node, sizeof(*node));

			node->func = func;
			node->user_data = user_data;
			node->id = id;
			node->head = head;


			if (!head->node) {
				head->node = node;
				head->tail = node;
			} else {
				head->tail->next = node;
				head->tail = head->tail->next;
			}
			status = SWITCH_STATUS_SUCCESS;
		}
	}

	switch_thread_rwlock_unlock(event_channel_manager.rwlock);

	return status;
}

typedef struct {
	char *event_channel;
	cJSON *json;
	char *key;
	switch_event_channel_id_t id;
} event_channel_data_t;



static uint32_t _switch_event_channel_broadcast(const char *event_channel, const char *broadcast_channel,
												cJSON *json, const char *key, switch_event_channel_id_t id)
{
	switch_event_channel_sub_node_t *np;
	switch_event_channel_sub_node_head_t *head;
	uint32_t x = 0;

	switch_thread_rwlock_rdlock(event_channel_manager.rwlock);
	if ((head = switch_core_hash_find(event_channel_manager.hash, event_channel))) {
		for (np = head->node; np; np = np->next) {
			if (np->id == id) {
				continue;
			}

			np->func(broadcast_channel, json, key, id, np->user_data);
			x++;
		}
	}
	switch_thread_rwlock_unlock(event_channel_manager.rwlock);

	return x;
}

static void destroy_ecd(event_channel_data_t **ecdP)
{
	event_channel_data_t *ecd = *ecdP;
	*ecdP = NULL;

	switch_safe_free(ecd->event_channel);
	switch_safe_free(ecd->key);
	if (ecd->json) {
		cJSON_Delete(ecd->json);
		ecd->json = NULL;
	}

	free(ecd);
}

#ifndef SWITCH_CHANNEL_DISPATCH_MAX_KEY_PARTS
#define SWITCH_CHANNEL_DISPATCH_MAX_KEY_PARTS 10
#endif

static void ecd_deliver(event_channel_data_t **ecdP)
{
	event_channel_data_t *ecd = *ecdP;
	char *key;
	uint32_t t = 0;

	*ecdP = NULL;

	t = _switch_event_channel_broadcast(ecd->event_channel, ecd->event_channel, ecd->json, ecd->key, ecd->id);

	key = strdup(ecd->event_channel);
	if (switch_core_test_flag(SCF_EVENT_CHANNEL_ENABLE_HIERARCHY_DELIVERY)) {
		const char *sep = switch_core_get_event_channel_key_separator();
		char *x_argv[SWITCH_CHANNEL_DISPATCH_MAX_KEY_PARTS] = { 0 };
		int x_argc = switch_separate_string_string(key, (char*) sep, x_argv, SWITCH_CHANNEL_DISPATCH_MAX_KEY_PARTS);
		char buf[1024];
		int i, r;

		for(i=x_argc - 1; i > 0; i--) {
			int z;

			memset(buf, 0, 1024);
			switch_snprintf(buf, sizeof(buf), "%s", x_argv[0]);
			for(z=1; z < i; z++) {
				strcat(buf, sep);
				strncat(buf, x_argv[z], sizeof(buf) - strlen(buf) - 1);
			}

			r = _switch_event_channel_broadcast(buf, ecd->event_channel, ecd->json, ecd->key, ecd->id);
			t += r;
			if (r && switch_core_test_flag(SCF_EVENT_CHANNEL_HIERARCHY_DELIVERY_ONCE)) {
				break;
			}
		}
	} else {
		char *p = NULL;

		if ((p = strchr(key, '.'))) {
			*p = '\0';
			t += _switch_event_channel_broadcast(key, ecd->event_channel, ecd->json, ecd->key, ecd->id);
		}
	}

	switch_safe_free(key);

	t += _switch_event_channel_broadcast(SWITCH_EVENT_CHANNEL_GLOBAL, ecd->event_channel, ecd->json, ecd->key, ecd->id);

	if(t == 0) {
		if (switch_core_test_flag(SCF_EVENT_CHANNEL_LOG_UNDELIVERABLE_JSON)) {
			char *json = cJSON_Print(ecd->json);

			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "no subscribers for %s , %s => %s\n", ecd->event_channel, ecd->key, json);
			switch_safe_free(json);
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "no subscribers for %s , %s\n", ecd->event_channel, ecd->key);
		}
	} else {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG1, "delivered to %u subscribers for %s\n", t, ecd->event_channel);
	}

	destroy_ecd(&ecd);
}

static void *SWITCH_THREAD_FUNC switch_event_channel_deliver_thread(switch_thread_t *thread, void *obj)
{
	switch_queue_t *queue = (switch_queue_t *) obj;
	void *pop = NULL;
	event_channel_data_t *ecd = NULL;

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	THREAD_COUNT++;
	EVENT_CHANNEL_DISPATCH_THREAD_COUNT++;
	EVENT_CHANNEL_DISPATCH_THREAD_STARTING = 0;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	while(SYSTEM_RUNNING) {

		if (switch_queue_pop(queue, &pop) != SWITCH_STATUS_SUCCESS) {
			continue;
		}

		if (!pop) {
			break;
		}

		ecd = (event_channel_data_t *) pop;
		ecd_deliver(&ecd);
		switch_os_yield();
	}

	while (switch_queue_trypop(queue, &pop) == SWITCH_STATUS_SUCCESS) {
		ecd = (event_channel_data_t *) pop;
		destroy_ecd(&ecd);
	}

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	THREAD_COUNT--;
	EVENT_CHANNEL_DISPATCH_THREAD_COUNT--;
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Event Channel Dispatch Thread Ended.\n");
	return NULL;
}

SWITCH_DECLARE(switch_status_t) switch_event_channel_broadcast(const char *event_channel, cJSON **json, const char *key, switch_event_channel_id_t id)
{
	event_channel_data_t *ecd = NULL;
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	int launch = 0;

	if (!SYSTEM_RUNNING) {
		cJSON_Delete(*json);
		*json = NULL;
		return SWITCH_STATUS_FALSE;
	}

	switch_zmalloc(ecd, sizeof(*ecd));

	ecd->event_channel = strdup(event_channel);
	ecd->json = *json;
	ecd->key = strdup(key);
	ecd->id = id;

	*json = NULL;

	switch_mutex_lock(EVENT_QUEUE_MUTEX);
	if (!EVENT_CHANNEL_DISPATCH_THREAD_COUNT && !EVENT_CHANNEL_DISPATCH_THREAD_STARTING && SYSTEM_RUNNING) {
		EVENT_CHANNEL_DISPATCH_THREAD_STARTING = 1;
		launch = 1;
	}
	switch_mutex_unlock(EVENT_QUEUE_MUTEX);

	if (launch) {
		switch_thread_data_t *td;

		if (!EVENT_CHANNEL_DISPATCH_QUEUE) {
			switch_queue_create(&EVENT_CHANNEL_DISPATCH_QUEUE, DISPATCH_QUEUE_LEN * MAX_DISPATCH, THRUNTIME_POOL);
		}

		td = malloc(sizeof(*td));
		switch_assert(td);

		td->alloc = 1;
		td->func = switch_event_channel_deliver_thread;
		td->obj = EVENT_CHANNEL_DISPATCH_QUEUE;
		td->pool = NULL;

		switch_thread_pool_launch_thread(&td);
	}

	if ((status = switch_queue_trypush(EVENT_CHANNEL_DISPATCH_QUEUE, ecd)) != SWITCH_STATUS_SUCCESS) {
		cJSON_Delete(ecd->json);
		ecd->json = NULL;
		destroy_ecd(&ecd);
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Event Channel Queue failure for channel %s, status = %d\n", event_channel, status);
	} else {
		ecd = NULL;
	}

	return status;
}

SWITCH_DECLARE(switch_status_t) switch_event_channel_deliver(const char *event_channel, cJSON **json, const char *key, switch_event_channel_id_t id)
{
	event_channel_data_t *ecd = NULL;
	switch_zmalloc(ecd, sizeof(*ecd));

	ecd->event_channel = strdup(event_channel);
	ecd->json = *json;
	ecd->key = strdup(key);
	ecd->id = id;

	*json = NULL;

	ecd_deliver(&ecd);

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(uint32_t) switch_event_channel_unbind(const char *event_channel, switch_event_channel_func_t func, void *user_data)
{
	return switch_event_channel_unsub_channel(func, event_channel, user_data);
}

SWITCH_DECLARE(switch_status_t) switch_event_channel_bind(const char *event_channel, switch_event_channel_func_t func, switch_event_channel_id_t *id, void *user_data)
{
	switch_status_t status = SWITCH_STATUS_SUCCESS;

	switch_assert(id);

	if (!*id) {
		switch_thread_rwlock_wrlock(event_channel_manager.rwlock);
		*id = event_channel_manager.ID++;
		switch_thread_rwlock_unlock(event_channel_manager.rwlock);
	}

	status = switch_event_channel_sub_channel(event_channel, func, *id, user_data);

	return status;
}

SWITCH_DECLARE(switch_bool_t) switch_event_channel_permission_verify(const char *cookie, const char *event_channel)
{
	switch_event_t *vals;
	switch_bool_t r = SWITCH_FALSE;

	switch_thread_rwlock_rdlock(event_channel_manager.rwlock);
	if ((vals = switch_core_hash_find(event_channel_manager.perm_hash, cookie))) {
		r = switch_true(switch_event_get_header(vals, event_channel));
	}
	switch_thread_rwlock_unlock(event_channel_manager.rwlock);

	return r;
}

SWITCH_DECLARE(void) switch_event_channel_permission_modify(const char *cookie, const char *event_channel, switch_bool_t set)
{
	switch_event_t *vals;

	switch_thread_rwlock_wrlock(event_channel_manager.rwlock);
	if (!(vals = switch_core_hash_find(event_channel_manager.perm_hash, cookie))) {
		if (!set) goto end;

		switch_event_create_plain(&vals, SWITCH_EVENT_CHANNEL_DATA);
		switch_core_hash_insert(event_channel_manager.perm_hash, cookie, vals);
	}

	if (set) {
		switch_event_add_header_string(vals, SWITCH_STACK_BOTTOM, event_channel, "true");
	} else {
		switch_event_del_header(vals, event_channel);
	}


 end:

	switch_thread_rwlock_unlock(event_channel_manager.rwlock);
}

SWITCH_DECLARE(void) switch_event_channel_permission_clear(const char *cookie)
{
	switch_event_t *vals;

	switch_thread_rwlock_wrlock(event_channel_manager.rwlock);
	if ((vals = switch_core_hash_find(event_channel_manager.perm_hash, cookie))) {
		switch_core_hash_delete(event_channel_manager.perm_hash, cookie);
		switch_event_destroy(&vals);
	}
	switch_thread_rwlock_unlock(event_channel_manager.rwlock);
}


typedef struct alias_node_s {
	char *event_channel;
	char *name;
	char *key;
	struct alias_node_s *next;
} alias_node_t;

typedef struct la_node_s {
	char *name;
	cJSON *obj;
	struct la_node_s *next;
	int pos;
} la_node_t;

struct switch_live_array_s {
	char *event_channel;
	char *name;
	char *key;
	la_node_t *head;
	la_node_t *tail;
	switch_memory_pool_t *pool;
	switch_hash_t *hash;
	switch_mutex_t *mutex;
	uint32_t serno;
	int pos;
	switch_bool_t visible;
	switch_bool_t new;
	switch_event_channel_id_t channel_id;
	switch_live_array_command_handler_t command_handler;
	void *user_data;
	alias_node_t *aliases;
	int refs;
};

static switch_status_t la_broadcast(switch_live_array_t *la, cJSON **json)
{
	alias_node_t *np;

	if (la->aliases) {
		switch_mutex_lock(la->mutex);
		for (np = la->aliases; np; np = np->next) {
			cJSON *dup = cJSON_Duplicate(*json, 1);
			cJSON *data = cJSON_GetObjectItem(dup, "data");

			cJSON_ReplaceItemInObject(dup, "eventChannel", cJSON_CreateString(np->event_channel));
			cJSON_ReplaceItemInObject(data, "name", cJSON_CreateString(np->name));

			switch_event_channel_broadcast(np->event_channel, &dup, __FILE__, la->channel_id);
		}
		switch_mutex_unlock(la->mutex);
	}

	return switch_event_channel_broadcast(la->event_channel, json, __FILE__, la->channel_id);

}


SWITCH_DECLARE(switch_status_t) switch_live_array_visible(switch_live_array_t *la, switch_bool_t visible, switch_bool_t force)
{
	switch_status_t status = SWITCH_STATUS_FALSE;

	switch_mutex_lock(la->mutex);
	if (la->visible != visible || force) {
		cJSON *msg, *data;

		msg = cJSON_CreateObject();
		data = json_add_child_obj(msg, "data", NULL);

		cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
		cJSON_AddItemToObject(data, "action", cJSON_CreateString(visible ? "hide" : "show"));
		cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(la->serno++));

		la_broadcast(la, &msg);

		la->visible = visible;
	}
	switch_mutex_unlock(la->mutex);

	return status;
}

SWITCH_DECLARE(switch_status_t) switch_live_array_clear(switch_live_array_t *la)
{
	la_node_t *cur, *np;
	cJSON *msg, *data;

	switch_mutex_lock(la->mutex);
	np = la->head;

	msg = cJSON_CreateObject();
	data = json_add_child_obj(msg, "data", NULL);

	cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
	cJSON_AddItemToObject(data, "action", cJSON_CreateString("clear"));
	cJSON_AddItemToObject(data, "name", cJSON_CreateString(la->name));
	cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(-1));
	cJSON_AddItemToObject(data, "data", cJSON_CreateObject());

	la_broadcast(la, &msg);

	while(np) {
		cur = np;
		np  = np->next;
		cJSON_Delete(cur->obj);
		free(cur->name);
		free(cur);
	}

	la->head = la->tail = NULL;

	switch_mutex_unlock(la->mutex);

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_live_array_bootstrap(switch_live_array_t *la, const char *sessid, switch_event_channel_id_t channel_id)
{
	la_node_t *np;
	cJSON *msg, *data;

	switch_mutex_lock(la->mutex);

#if OLD_WAY
	msg = cJSON_CreateObject();
	data = json_add_child_obj(msg, "data", NULL);

	cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
	cJSON_AddItemToObject(data, "action", cJSON_CreateString("clear"));
	cJSON_AddItemToObject(data, "name", cJSON_CreateString(la->name));
	cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(-1));
	cJSON_AddItemToObject(data, "data", cJSON_CreateObject());

	switch_event_channel_broadcast(la->event_channel, &msg, __FILE__, channel_id);

	for (np = la->head; np; np = np->next) {
		msg = cJSON_CreateObject();
		data = json_add_child_obj(msg, "data", NULL);

		cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
		cJSON_AddItemToObject(data, "action", cJSON_CreateString("add"));
		cJSON_AddItemToObject(data, "name", cJSON_CreateString(la->name));
		cJSON_AddItemToObject(data, "hashKey", cJSON_CreateString(np->name));
		cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(la->serno++));
		cJSON_AddItemToObject(data, "data", cJSON_Duplicate(np->obj, 1));
		if (sessid) {
			cJSON_AddItemToObject(msg, "sessid", cJSON_CreateString(sessid));
		}
		switch_event_channel_broadcast(la->event_channel, &msg, __FILE__, channel_id);
	}
#else


	msg = cJSON_CreateObject();
	data = json_add_child_obj(msg, "data", NULL);

	cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
	cJSON_AddItemToObject(data, "action", cJSON_CreateString("bootObj"));
	cJSON_AddItemToObject(data, "name", cJSON_CreateString(la->name));
	cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(-1));

	if (sessid) {
		cJSON_AddItemToObject(msg, "sessid", cJSON_CreateString(sessid));
	}

	data = json_add_child_array(data, "data");

	for (np = la->head; np; np = np->next) {
		cJSON *row = cJSON_CreateArray();
		cJSON_AddItemToArray(row, cJSON_CreateString(np->name));
		cJSON_AddItemToArray(row, cJSON_Duplicate(np->obj, 1));
		cJSON_AddItemToArray(data, row);
	}

	switch_event_channel_broadcast(la->event_channel, &msg, __FILE__, channel_id);


#endif

	if (!la->visible) {
		switch_live_array_visible(la, SWITCH_FALSE, SWITCH_TRUE);
	}

	switch_mutex_unlock(la->mutex);

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_status_t) switch_live_array_destroy(switch_live_array_t **live_arrayP)
{
	switch_live_array_t *la = *live_arrayP;
	switch_memory_pool_t *pool;
	alias_node_t *np;
	int done = 0;

	*live_arrayP = NULL;

	switch_mutex_lock(la->mutex);
	if (la->refs) {
		la->refs--;
	}
	if (la->refs) done = 1;
	switch_mutex_unlock(la->mutex);

	if (done) {
		return SWITCH_STATUS_SUCCESS;
	}

	pool = la->pool;

	switch_live_array_clear(la);

	switch_core_hash_destroy(&la->hash);

	switch_mutex_lock(event_channel_manager.lamutex);
	switch_core_hash_delete(event_channel_manager.lahash, la->key);
	for (np = la->aliases; np; np = np->next) {
		switch_core_hash_delete(event_channel_manager.lahash, np->key);
	}
	switch_mutex_unlock(event_channel_manager.lamutex);

	switch_core_destroy_memory_pool(&pool);

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(switch_bool_t) switch_live_array_isnew(switch_live_array_t *la)
{
	return la->new;
}

SWITCH_DECLARE(switch_bool_t) switch_live_array_clear_alias(switch_live_array_t *la, const char *event_channel, const char *name)
{
	alias_node_t *np, *last = NULL, *del = NULL;
	switch_bool_t r = SWITCH_FALSE;

	switch_mutex_lock(la->mutex);
	for (np = la->aliases; np; np = np->next) {
		if (!strcmp(np->event_channel, event_channel) && !strcmp(np->name, name)) {
			r = SWITCH_TRUE;
			del = np;

			if (last) {
				last->next = np->next;
			} else {
				la->aliases = np->next;
			}
		} else {
			last = np;
		}
	}
	switch_mutex_unlock(la->mutex);

	if (r) {
		switch_mutex_lock(event_channel_manager.lamutex);
		switch_core_hash_delete(event_channel_manager.lahash, del->key);
		switch_mutex_unlock(event_channel_manager.lamutex);
	}


	return r;
}

SWITCH_DECLARE(switch_bool_t) switch_live_array_add_alias(switch_live_array_t *la, const char *event_channel, const char *name)
{
	alias_node_t *node = 0, *np;
	switch_bool_t exist = SWITCH_FALSE;

	switch_mutex_lock(la->mutex);
	for (np = la->aliases; np && np->next; np = np->next) {
		if (!strcmp(np->event_channel, event_channel) && !strcmp(np->name, name)) {
			exist = SWITCH_TRUE;
			break;
		}
	}

	if (!exist) {
		node = switch_core_alloc(la->pool, sizeof(*node));
		node->event_channel = switch_core_strdup(la->pool, event_channel);
		node->name = switch_core_strdup(la->pool, name);
		node->key = switch_core_sprintf(la->pool, "%s.%s", event_channel, name);

		if (np) {
			np->next = node;
		} else {
			la->aliases = node;
		}
	}

	switch_mutex_unlock(la->mutex);

	if (!exist) {
		switch_mutex_lock(event_channel_manager.lamutex);
		switch_core_hash_insert(event_channel_manager.lahash, node->key, la);
		switch_mutex_unlock(event_channel_manager.lamutex);
	}


	return !exist;
}

SWITCH_DECLARE(switch_status_t) switch_live_array_create(const char *event_channel, const char *name,
														 switch_event_channel_id_t channel_id, switch_live_array_t **live_arrayP)
{
	switch_live_array_t *la = NULL;
	switch_memory_pool_t *pool;
	char *key = NULL;

	switch_core_new_memory_pool(&pool);
	key = switch_core_sprintf(pool, "%s.%s", event_channel, name);

	switch_mutex_lock(event_channel_manager.lamutex);
	la = switch_core_hash_find(event_channel_manager.lahash, key);
	switch_mutex_unlock(event_channel_manager.lamutex);

	if (la) {
		la->new = SWITCH_FALSE;
	} else {
		la = switch_core_alloc(pool, sizeof(*la));
		la->pool = pool;
		la->serno = 1;
		la->visible = SWITCH_TRUE;
		la->event_channel = switch_core_strdup(la->pool, event_channel);
		la->name = switch_core_strdup(la->pool, name);
		la->key = key;
		la->new = SWITCH_TRUE;
		la->channel_id = channel_id;
		switch_core_hash_init(&la->hash);
		switch_mutex_init(&la->mutex, SWITCH_MUTEX_NESTED, la->pool);

		switch_mutex_lock(event_channel_manager.lamutex);
		switch_core_hash_insert(event_channel_manager.lahash, la->key, la);
		switch_mutex_unlock(event_channel_manager.lamutex);
	}

	switch_mutex_lock(la->mutex);
	la->refs++;
	switch_mutex_unlock(la->mutex);

	*live_arrayP = la;

	return SWITCH_STATUS_SUCCESS;
}

SWITCH_DECLARE(cJSON *) switch_live_array_get(switch_live_array_t *la, const char *name)
{
	la_node_t *node;
	cJSON *dup = NULL;

	switch_mutex_lock(la->mutex);
	if ((node = switch_core_hash_find(la->hash, name))) {
		dup = cJSON_Duplicate(node->obj, 1);
	}
	switch_mutex_unlock(la->mutex);

	return dup;
}

SWITCH_DECLARE(cJSON *) switch_live_array_get_idx(switch_live_array_t *la, int idx)
{
	la_node_t *node;
	cJSON *dup = NULL;

	switch_mutex_lock(la->mutex);
	for (node = la->head; node; node = node->next) {
		if (node->pos == idx) {
			dup = cJSON_Duplicate(node->obj, 1);
			break;
		}
	}
	switch_mutex_unlock(la->mutex);

	return dup;
}

SWITCH_DECLARE(void) switch_live_array_lock(switch_live_array_t *la)
{
	switch_mutex_lock(la->mutex);
}

SWITCH_DECLARE(void) switch_live_array_unlock(switch_live_array_t *la)
{
	switch_mutex_unlock(la->mutex);
}

SWITCH_DECLARE(switch_status_t) switch_live_array_del(switch_live_array_t *la, const char *name)
{
	switch_status_t status = SWITCH_STATUS_FALSE;
	la_node_t *node, *cur, *np, *last = NULL;
	cJSON *msg, *data = NULL;

	switch_mutex_lock(la->mutex);
	if ((node = switch_core_hash_find(la->hash, name))) {
		np = la->head;

		while(np) {
			cur = np;
			np = np->next;

			if (cur == node) {
				if (last) {
					last->next = cur->next;
				} else {
					la->head = cur->next;
				}
				switch_core_hash_delete(la->hash, name);

				msg = cJSON_CreateObject();
				data = json_add_child_obj(msg, "data", NULL);

				cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
				cJSON_AddItemToObject(data, "name", cJSON_CreateString(la->name));
				cJSON_AddItemToObject(data, "action", cJSON_CreateString("del"));
				cJSON_AddItemToObject(data, "hashKey", cJSON_CreateString(cur->name));
				cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(la->serno++));
				cJSON_AddItemToObject(data, "data", cur->obj);
				cur->obj = NULL;

				la_broadcast(la, &msg);
				free(cur->name);
				free(cur);
			} else {
				cur->pos = la->pos++;
				la->tail = cur;
				last = cur;
			}
		}
	}
	switch_mutex_unlock(la->mutex);

	return status;
}

SWITCH_DECLARE(switch_status_t) switch_live_array_add(switch_live_array_t *la, const char *name, int index, cJSON **obj, switch_bool_t duplicate)
{
	la_node_t *node;
	switch_status_t status = SWITCH_STATUS_SUCCESS;
	const char *action = "add";
	cJSON *msg = NULL, *data = NULL;
	const char *visibility = NULL;
	
	switch_mutex_lock(la->mutex);

	if ((node = switch_core_hash_find(la->hash, name))) {

		action = "modify";

		if (node->obj) {
			if (duplicate) {
				cJSON_Delete(node->obj);
				node->obj = NULL;
			}
		}
	} else {
		switch_zmalloc(node, sizeof(*node));

		node->name = strdup(name);
		switch_core_hash_insert(la->hash, name, node);

		if (index > -1 && index < la->pos && la->head) {
			la_node_t *np, *last = NULL;
			int i = 0;

			for(np = la->head; np; np = np->next) {

				if (i == index) {
					if (last) {
						node->next = last->next;
						last->next = node;
						np = node;
					} else {
						node->next = la->head;
						la->head = node;
						np = node;
					}
				}

				np->pos = i;
				la->tail = np;
				last = np;
				i++;
			}


		} else {

			node->pos = la->pos++;
			index = node->pos;

			if (!la->head) {
				la->head = node;
			} else {
				la->tail->next = node;
			}

			la->tail = node;
		}
	}

	if (duplicate) {
		node->obj = cJSON_Duplicate(*obj, 1);
	} else {
		node->obj = *obj;
	}

	msg = cJSON_CreateObject();
	data = json_add_child_obj(msg, "data", NULL);
	if ((visibility = cJSON_GetObjectCstr(node->obj, "contentVisibility"))) {
		cJSON_AddItemToObject(msg, "contentVisibility", cJSON_CreateString(visibility));
	}
	cJSON_AddItemToObject(msg, "eventChannel", cJSON_CreateString(la->event_channel));
	cJSON_AddItemToObject(data, "action", cJSON_CreateString(action));

	if (index > -1) {
		cJSON_AddItemToObject(data, "arrIndex", cJSON_CreateNumber(index));
	}

	cJSON_AddItemToObject(data, "name", cJSON_CreateString(la->name));
	cJSON_AddItemToObject(data, "hashKey", cJSON_CreateString(node->name));
	cJSON_AddItemToObject(data, "wireSerno", cJSON_CreateNumber(la->serno++));
	cJSON_AddItemToObject(data, "data", cJSON_Duplicate(node->obj, 1));

	la_broadcast(la, &msg);

	switch_mutex_unlock(la->mutex);

	return status;
}

SWITCH_DECLARE(void) switch_live_array_set_user_data(switch_live_array_t *la, void *user_data)
{
	switch_assert(la);
	la->user_data = user_data;
}

SWITCH_DECLARE(void) switch_live_array_set_command_handler(switch_live_array_t *la, switch_live_array_command_handler_t command_handler)
{
	switch_assert(la);
	la->command_handler = command_handler;
}


SWITCH_DECLARE(void) switch_live_array_parse_json(cJSON *json, switch_event_channel_id_t channel_id)
{
	const char *context = NULL, *name = NULL;
	switch_live_array_t *la = NULL;
	cJSON *jla = NULL;

	if ((jla = cJSON_GetObjectItem(json, "data")) && (jla = cJSON_GetObjectItem(jla, "liveArray"))) {

		if ((context = cJSON_GetObjectCstr(jla, "context")) && (name = cJSON_GetObjectCstr(jla, "name"))) {
			const char *command = cJSON_GetObjectCstr(jla, "command");
			const char *sessid = cJSON_GetObjectCstr(json, "sessid");

			if (command) {
				if (switch_live_array_create(context, name, channel_id, &la) == SWITCH_STATUS_SUCCESS) {

					if (!strcasecmp(command, "bootstrap")) {
						switch_live_array_bootstrap(la, sessid, channel_id);
					} else {
						if (la->command_handler) {
							la->command_handler(la, command, sessid, jla, la->user_data);
						}
					}
					switch_live_array_destroy(&la);
				}
			}
		}
	}

}

/* 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:
 */