/*
 * 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):
 *
 * Brian West <brian@freeswitch.org>
 * Bret McDanel <trixter AT 0xdecafbad.com>
 * Justin Cassidy <xachenant@hotmail.com>
 *
 * mod_json_cdr.c -- JSON CDR Module to files or curl
 *
 */
#include <switch.h>
#include <sys/stat.h>
#include <switch_curl.h>

#define MAX_URLS 20
#define MAX_ERR_DIRS 20

#define ENCODING_NONE 0
#define ENCODING_DEFAULT 1
#define ENCODING_BASE64 2

static struct {
	char *cred;
	char *urls[MAX_URLS];
	int url_count;
	int url_index;
	switch_thread_rwlock_t *log_path_lock;
	char *base_log_dir;
	char *base_err_log_dir[MAX_ERR_DIRS];
	char *log_dir;
	char *err_log_dir[MAX_ERR_DIRS];
	int err_dir_count;
	uint32_t delay;
	uint32_t retries;
	uint32_t shutdown;
	uint32_t enable_cacert_check;
	char *ssl_cert_file;
	char *ssl_key_file;
	char *ssl_key_password;
	char *ssl_version;
	char *ssl_cacert_file;
	uint32_t enable_ssl_verifyhost;
	int encode;
	int log_http_and_disk;
	switch_bool_t log_errors_to_disk;
	int log_b;
	int prefix_a;
	int disable100continue;
	int rotate;
	long auth_scheme;
	switch_memory_pool_t *pool;
	switch_event_node_t *node;
	int encode_values;
	switch_queue_t *queue;
	switch_thread_t *thread;
} globals;

typedef struct {
	char *json_text;
	char *json_text_escaped;
	char *logdir;
	char *uuid;
	char *filename;
} cdr_data_t;

SWITCH_MODULE_LOAD_FUNCTION(mod_json_cdr_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_json_cdr_shutdown);
SWITCH_MODULE_DEFINITION(mod_json_cdr, mod_json_cdr_load, mod_json_cdr_shutdown, NULL);

/* this function would have access to the HTML returned by the webserver, we don't need it
 * and the default curl activity is to print to stdout, something not as desirable
 * so we have a dummy function here
 */
static size_t httpCallBack(char *buffer, size_t size, size_t nitems, void *outstream)
{
	return size * nitems;
}

static switch_status_t set_json_cdr_log_dirs()
{
	switch_time_exp_t tm;
	char *path = NULL;
	char date[80] = "";
	switch_size_t retsize;
	switch_status_t status = SWITCH_STATUS_SUCCESS, dir_status;
	int err_dir_index;

	switch_time_exp_lt(&tm, switch_micro_time_now());
	switch_strftime_nocheck(date, &retsize, sizeof(date), "%Y-%m-%d-%H-%M-%S", &tm);

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Rotating log file paths\n");

	if (!zstr(globals.base_log_dir)) {
		if (globals.rotate) {
			if ((path = switch_mprintf("%s%s%s", globals.base_log_dir, SWITCH_PATH_SEPARATOR, date))) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Rotating log file path to %s\n", path);

				dir_status = SWITCH_STATUS_SUCCESS;
				if (switch_directory_exists(path, globals.pool) != SWITCH_STATUS_SUCCESS) {
					dir_status = switch_dir_make(path, SWITCH_FPROT_OS_DEFAULT, globals.pool);
				}

				if (dir_status == SWITCH_STATUS_SUCCESS) {
					switch_thread_rwlock_wrlock(globals.log_path_lock);
					switch_safe_free(globals.log_dir);
					globals.log_dir = path;
					switch_thread_rwlock_unlock(globals.log_path_lock);
				} else {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to create new mod_json_cdr log_dir path\n");
					switch_safe_free(path);
					status = SWITCH_STATUS_FALSE;
				}
			} else {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to generate new mod_json_cdr log_dir path\n");
				status = SWITCH_STATUS_FALSE;
			}
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Setting log file path to %s\n", globals.base_log_dir);
			if ((path = switch_safe_strdup(globals.base_log_dir))) {
				switch_thread_rwlock_wrlock(globals.log_path_lock);
				switch_safe_free(globals.log_dir);
				switch_dir_make_recursive(path, SWITCH_DEFAULT_DIR_PERMS, globals.pool);
				globals.log_dir = path;
				switch_thread_rwlock_unlock(globals.log_path_lock);
			} else {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to set log_dir path\n");
				status = SWITCH_STATUS_FALSE;
			}
		}
	}

	for (err_dir_index = 0; err_dir_index < globals.err_dir_count; err_dir_index++) {
		if (globals.rotate) {
			if ((path = switch_mprintf("%s%s%s", globals.base_err_log_dir[err_dir_index], SWITCH_PATH_SEPARATOR, date))) {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Rotating err log file path to %s\n", path);

				dir_status = SWITCH_STATUS_SUCCESS;
				if (switch_directory_exists(path, globals.pool) != SWITCH_STATUS_SUCCESS) {
					dir_status = switch_dir_make(path, SWITCH_FPROT_OS_DEFAULT, globals.pool);
				}

				if (dir_status == SWITCH_STATUS_SUCCESS) {
					switch_thread_rwlock_wrlock(globals.log_path_lock);
					switch_safe_free(globals.err_log_dir[err_dir_index]);
					globals.err_log_dir[err_dir_index] = path;
					switch_thread_rwlock_unlock(globals.log_path_lock);
				} else {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to create new mod_json_cdr err_log_dir path\n");
					switch_safe_free(path);
					status = SWITCH_STATUS_FALSE;
				}
			} else {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to generate new mod_json_cdr err_log_dir path\n");
				status = SWITCH_STATUS_FALSE;
			}
		} else {
			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Setting err log file path to %s\n", globals.base_err_log_dir[err_dir_index]);
			if ((path = switch_safe_strdup(globals.base_err_log_dir[err_dir_index]))) {
				switch_thread_rwlock_wrlock(globals.log_path_lock);
				switch_safe_free(globals.err_log_dir[err_dir_index]);
				switch_dir_make_recursive(path, SWITCH_DEFAULT_DIR_PERMS, globals.pool);
				globals.err_log_dir[err_dir_index] = path;
				switch_thread_rwlock_unlock(globals.log_path_lock);
			} else {
				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to set err_log_dir path\n");
				status = SWITCH_STATUS_FALSE;
			}
		}
	}

	return status;
}

static void backup_cdr(cdr_data_t *data)
{
	if (globals.log_errors_to_disk) {
		int fd = -1, err_dir_index;
		char *path = NULL;
		const char *json_text = data->json_text_escaped ? data->json_text_escaped : data->json_text;

		for (err_dir_index = 0; err_dir_index < globals.err_dir_count; err_dir_index++) {
			switch_thread_rwlock_rdlock(globals.log_path_lock);
			path = switch_mprintf("%s%s%s", globals.err_log_dir[err_dir_index], SWITCH_PATH_SEPARATOR, data->filename);
			switch_thread_rwlock_unlock(globals.log_path_lock);

			switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_INFO, "Backup file %s\n", path);
			if (path) {
#ifdef _MSC_VER
				mode_t mode = S_IRUSR | S_IWUSR;
#else
				mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
#endif
				if ((fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, mode)) > -1) {
					switch_size_t json_len = strlen(json_text);
					switch_ssize_t wrote = 0, x;
					do { x = write(fd, json_text, json_len);
					} while (!(x<0) && json_len > (wrote += x));
					if (!(x<0)) do { x = write(fd, "\n", 1);
						} while (!(x<0) && x<1);
					close(fd); fd = -1;
					if (x < 0) {
						switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Error writing [%s]\n",path);
						if (0 > unlink(path))
							switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Error unlinking [%s]\n",path);
					}
					switch_safe_free(path);
					break;
				} else {
					char ebuf[512] = { 0 };
					switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Can't open %s! [%s]\n",
									  path, switch_strerror_r(errno, ebuf, sizeof(ebuf)));

				}
				switch_safe_free(path);
			}
		}
	} else {
		switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_NOTICE, "Not writing to file\n");
	}
}


void destroy_cdr_data(cdr_data_t *data)
{
	switch_safe_free(data->json_text);
	switch_safe_free(data->json_text_escaped);
	switch_safe_free(data->uuid);
	switch_safe_free(data->filename);
	switch_safe_free(data->logdir);
	switch_safe_free(data);
}

static void process_cdr(cdr_data_t *data)
{
	char *curl_json_text = NULL;
	long httpRes;
	CURL *curl_handle = NULL;
	switch_curl_slist_t *headers = NULL;
	switch_curl_slist_t *slist = NULL;
	int fd = -1;
	uint32_t cur_try;

	switch_assert(data != NULL);

	if (globals.shutdown) {
		goto end;
	}

	switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_INFO, "Process [%s]\n", data->filename);

	if (!zstr(data->logdir) && (globals.log_http_and_disk || !globals.url_count)) {
		char *path = switch_mprintf("%s%s%s", data->logdir, SWITCH_PATH_SEPARATOR, data->filename);
		switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_INFO, "Log to disk [%s]\n", path);
		if (path) {
#ifdef _MSC_VER
			if ((fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR)) > -1) {
#else
			if ((fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)) > -1) {
#endif
				switch_size_t json_len = strlen(data->json_text);
				switch_ssize_t wrote = 0, x;
				do { x = write(fd, data->json_text, json_len);
				} while (!(x<0) && json_len > (wrote += x));
				if (!(x<0)) do { x = write(fd, "\n", 1);
					} while (!(x<0) && x<1);
				close(fd); fd = -1;
				if (x < 0) {
					switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Error writing [%s]\n",path);
					if (0 > unlink(path))
						switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Error unlinking [%s]\n",path);
				}
			} else {
				char ebuf[512] = { 0 };
				switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Error writing [%s][%s]\n",
								  path, switch_strerror_r(errno, ebuf, sizeof(ebuf)));
			}
			switch_safe_free(path);
		}
	}

	/* try to post it to the web server */
	if (globals.url_count) {
		char *destUrl = NULL;
		curl_handle = switch_curl_easy_init();

		if (globals.encode) {
			if (globals.encode == ENCODING_DEFAULT) {
				headers = switch_curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded");
			} else {
				headers = switch_curl_slist_append(headers, "Content-Type: application/x-www-form-base64-encoded");
			}

			curl_json_text = switch_mprintf("cdr=%s", data->json_text_escaped);
			switch_assert(curl_json_text != NULL);

		} else {
			headers = switch_curl_slist_append(headers, "Content-Type: application/json");
			curl_json_text = (char *)data->json_text;
		}

		if (!zstr(globals.cred)) {
			switch_curl_easy_setopt(curl_handle, CURLOPT_HTTPAUTH, globals.auth_scheme);
			switch_curl_easy_setopt(curl_handle, CURLOPT_USERPWD, globals.cred);
		}

		switch_curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, headers);
		switch_curl_easy_setopt(curl_handle, CURLOPT_POST, 1);
		switch_curl_easy_setopt(curl_handle, CURLOPT_NOSIGNAL, 1);
		switch_curl_easy_setopt(curl_handle, CURLOPT_POSTFIELDS, curl_json_text);
		switch_curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "freeswitch-json/1.0");
		switch_curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, httpCallBack);

		if (globals.disable100continue) {
			slist = switch_curl_slist_append(slist, "Expect:");
			switch_curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, slist);
		}

		if (!zstr(globals.ssl_cert_file)) {
			switch_curl_easy_setopt(curl_handle, CURLOPT_SSLCERT, globals.ssl_cert_file);
		}

		if (!zstr(globals.ssl_key_file)) {
			switch_curl_easy_setopt(curl_handle, CURLOPT_SSLKEY, globals.ssl_key_file);
		}

		if (!zstr(globals.ssl_key_password)) {
			switch_curl_easy_setopt(curl_handle, CURLOPT_SSLKEYPASSWD, globals.ssl_key_password);
		}

		if (!zstr(globals.ssl_version)) {
			if (!strcasecmp(globals.ssl_version, "SSLv3")) {
				switch_curl_easy_setopt(curl_handle, CURLOPT_SSLVERSION, CURL_SSLVERSION_SSLv3);
			} else if (!strcasecmp(globals.ssl_version, "TLSv1")) {
				switch_curl_easy_setopt(curl_handle, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
			}
		}

		if (!zstr(globals.ssl_cacert_file)) {
			switch_curl_easy_setopt(curl_handle, CURLOPT_CAINFO, globals.ssl_cacert_file);
		}

		/* these were used for testing, optionally they may be enabled if someone desires
		   switch_curl_easy_setopt(curl_handle, CURLOPT_TIMEOUT, 120); // tcp timeout
		   switch_curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1); // 302 recursion level
		 */

		for (cur_try = 0; cur_try < globals.retries; cur_try++) {
			if (cur_try > 0) {
				switch_yield(globals.delay * 1000000);
			}

			destUrl = switch_mprintf("%s?uuid=%s", globals.urls[globals.url_index], data->uuid);
			switch_curl_easy_setopt(curl_handle, CURLOPT_URL, destUrl);

			if (!strncasecmp(destUrl, "https", 5)) {
				switch_curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 0);
				switch_curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYHOST, 0);
			}

			if (globals.enable_cacert_check) {
				switch_curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, TRUE);
			}

			if (globals.enable_ssl_verifyhost) {
				switch_curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYHOST, 2);
			}

			switch_curl_easy_perform(curl_handle);
			switch_curl_easy_getinfo(curl_handle, CURLINFO_RESPONSE_CODE, &httpRes);
			switch_safe_free(destUrl);
			if (httpRes >= 200 && httpRes < 300) {
				goto end;
			} else {
				switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Got error [%ld] posting to web server [%s]\n",
								  httpRes, globals.urls[globals.url_index]);
				globals.url_index++;
				switch_assert(globals.url_count <= MAX_URLS);
				if (globals.url_index >= globals.url_count) {
					globals.url_index = 0;
				} else {
					switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Retry will be with url [%s]\n", globals.urls[globals.url_index]);
					}
			}
		}
		switch_curl_easy_cleanup(curl_handle);
		switch_curl_slist_free_all(headers);
		switch_curl_slist_free_all(slist);
		slist = NULL;
		headers = NULL;
		curl_handle = NULL;

		/* if we are here the web post failed for some reason */
		switch_log_printf(SWITCH_CHANNEL_UUID_LOG(data->uuid), SWITCH_LOG_ERROR, "Unable to post to web server\n");
		backup_cdr(data);
	}

	end:
	if (curl_handle) {
		switch_curl_easy_cleanup(curl_handle);
	}
	if (headers) {
		switch_curl_slist_free_all(headers);
	}
	if (slist) {
		switch_curl_slist_free_all(slist);
	}
	if (curl_json_text != data->json_text) {
		switch_safe_free(curl_json_text);
	}

	destroy_cdr_data(data);
}

static switch_status_t my_on_reporting(switch_core_session_t *session)
{
	cJSON *json_cdr = NULL;
	char *json_text = NULL;
	char *json_text_escaped = NULL;
	switch_channel_t *channel = switch_core_session_get_channel(session);
	int is_b;
	const char *a_prefix = "";
	cdr_data_t *cdr_data = NULL;
	const char *logdir = NULL;

	if (globals.shutdown) {
		return SWITCH_STATUS_SUCCESS;
	}

	is_b = channel && switch_channel_get_originator_caller_profile(channel);
	if (!globals.log_b && is_b) {
		const char *force_cdr = switch_channel_get_variable(channel, SWITCH_FORCE_PROCESS_CDR_VARIABLE);
		if (!switch_true(force_cdr)) {
			return SWITCH_STATUS_SUCCESS;
		}
	}
	if (!is_b && globals.prefix_a) {
		a_prefix = "a_";
	}

	if (switch_ivr_generate_json_cdr(session, &json_cdr, globals.encode_values == ENCODING_DEFAULT) != SWITCH_STATUS_SUCCESS) {
		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Error Generating Data!\n");
		return SWITCH_STATUS_FALSE;
	}

	cdr_data = malloc(sizeof(cdr_data_t));
	switch_assert(cdr_data);

	json_text = cJSON_PrintUnformatted(json_cdr);

	if (globals.url_count && globals.encode) {
		switch_size_t need_bytes = strlen(json_text) * 3;

		json_text_escaped = malloc(need_bytes);
		switch_assert(json_text_escaped);
		memset(json_text_escaped, 0, need_bytes);
		if (globals.encode == ENCODING_DEFAULT) {
			switch_url_encode(json_text, json_text_escaped, need_bytes);
		} else {
			switch_b64_encode((unsigned char *) json_text, need_bytes / 3, (unsigned char *) json_text_escaped, need_bytes);
		}
	}

	cdr_data->uuid = strdup(switch_core_session_get_uuid(session));
	cdr_data->filename = switch_mprintf("%s%s.cdr.json", a_prefix, cdr_data->uuid);
	cdr_data->json_text = json_text;
    cdr_data->json_text_escaped = json_text_escaped;

	switch_thread_rwlock_rdlock(globals.log_path_lock);

	if (!(logdir = switch_channel_get_variable(channel, "json_cdr_base"))) {
		logdir = globals.log_dir;
	}
	cdr_data->logdir = switch_safe_strdup(logdir);

	switch_thread_rwlock_unlock(globals.log_path_lock);

	if (globals.queue) {
		if (switch_queue_trypush(globals.queue, cdr_data) != SWITCH_STATUS_SUCCESS) {
			switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "Unable to push cdr to queue\n");
			backup_cdr(cdr_data);
			destroy_cdr_data(cdr_data);
		}
	} else {
		process_cdr(cdr_data);
	}

	cJSON_Delete(json_cdr);

	return SWITCH_STATUS_SUCCESS;
}

static void *SWITCH_THREAD_FUNC cdr_thread(switch_thread_t *t, void *obj)
{
	void *pop = NULL;
	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Cdr thread started.\n");

	while (!globals.shutdown) {
		cdr_data_t *data = NULL;

		if (switch_queue_pop(globals.queue, &pop) != SWITCH_STATUS_SUCCESS) {
			break;
		}

		if (!pop) {
			break;
		}

		data = (cdr_data_t *) pop;
		process_cdr(data);
	}

	while (switch_queue_trypop(globals.queue, &pop) == SWITCH_STATUS_SUCCESS) {
		destroy_cdr_data((cdr_data_t *) pop);
	}

	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CONSOLE, "Cdr thread ended.\n");
	switch_thread_exit(t, SWITCH_STATUS_SUCCESS);

	return NULL;
}

static void event_handler(switch_event_t *event)
{
	const char *sig = switch_event_get_header(event, "Trapped-Signal");

	if (sig && !strcmp(sig, "HUP")) {
		if (globals.rotate) {
			set_json_cdr_log_dirs();
		}
	}
}

static switch_state_handler_table_t state_handlers = {
	/*.on_init */ NULL,
	/*.on_routing */ NULL,
	/*.on_execute */ NULL,
	/*.on_hangup */ NULL,
	/*.on_exchange_media */ NULL,
	/*.on_soft_execute */ NULL,
	/*.on_consume_media */ NULL,
	/*.on_hibernate */ NULL,
	/*.on_reset */ NULL,
	/*.on_park */ NULL,
	/*.on_reporting */ my_on_reporting
};

SWITCH_MODULE_LOAD_FUNCTION(mod_json_cdr_load)
{
	char *cf = "json_cdr.conf";
	switch_xml_t cfg, xml, settings, param;
	switch_status_t status = SWITCH_STATUS_SUCCESS;

	memset(&globals, 0, sizeof(globals));

	globals.log_http_and_disk = 0;
	globals.log_errors_to_disk = SWITCH_TRUE;
	globals.log_b = 1;
	globals.disable100continue = 0;
	globals.pool = pool;
	globals.auth_scheme = CURLAUTH_BASIC;
	globals.encode_values = ENCODING_DEFAULT;

	switch_thread_rwlock_create(&globals.log_path_lock, pool);

	/* parse the config */
	if (!(xml = switch_xml_open_cfg(cf, &cfg, NULL))) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Open of %s failed\n", cf);
		return SWITCH_STATUS_TERM;
	}

	if ((settings = switch_xml_child(cfg, "settings"))) {
		for (param = switch_xml_child(settings, "param"); param; param = param->next) {
			char *var = (char *) switch_xml_attr_soft(param, "name");
			char *val = (char *) switch_xml_attr_soft(param, "value");

			if (!strcasecmp(var, "cred") && !zstr(val)) {
				globals.cred = switch_core_strdup(globals.pool, val);
			} else if (!strcasecmp(var, "url") && !zstr(val)) {
				if (globals.url_count >= MAX_URLS) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "maximum urls configured!\n");
				} else {
					globals.urls[globals.url_count++] = switch_core_strdup(globals.pool, val);
				}
			} else if (!strcasecmp(var, "log-http-and-disk")) {
				globals.log_http_and_disk = switch_true(val);
			} else if (!strcasecmp(var, "log-errors-to-disk")) {
				globals.log_errors_to_disk = !switch_false(val);
			} else if (!strcasecmp(var, "delay") && !zstr(val)) {
				globals.delay = (uint32_t) atoi(val);
			} else if (!strcasecmp(var, "log-b-leg")) {
				globals.log_b = switch_true(val);
			} else if (!strcasecmp(var, "prefix-a-leg")) {
				globals.prefix_a = switch_true(val);
			} else if (!strcasecmp(var, "disable-100-continue") && switch_true(val)) {
				globals.disable100continue = 1;
			} else if (!strcasecmp(var, "encode") && !zstr(val)) {
				if (!strcasecmp(val, "base64")) {
					globals.encode = ENCODING_BASE64;
				} else {
					globals.encode = switch_true(val) ? ENCODING_DEFAULT : ENCODING_NONE;
				}
			} else if (!strcasecmp(var, "retries") && !zstr(val)) {
				globals.retries = (uint32_t) atoi(val);
			} else if (!strcasecmp(var, "rotate") && !zstr(val)) {
				globals.rotate = switch_true(val);
			} else if (!strcasecmp(var, "log-dir")) {
				if (zstr(val)) {
					globals.base_log_dir = switch_core_sprintf(globals.pool, "%s%sjson_cdr", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR);
				} else {
					if (switch_is_file_path(val)) {
						globals.base_log_dir = switch_core_strdup(globals.pool, val);
					} else {
						globals.base_log_dir = switch_core_sprintf(globals.pool, "%s%s%s", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR, val);
					}
				}
			} else if (!strcasecmp(var, "err-log-dir")) {
				if (globals.err_dir_count >= MAX_ERR_DIRS) {
					switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "maximum error directories configured!\n");
				} else {

					if (zstr(val)) {
						globals.base_err_log_dir[globals.err_dir_count++] = switch_core_sprintf(globals.pool, "%s%sjson_cdr", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR);
					} else {
						if (switch_is_file_path(val)) {
							globals.base_err_log_dir[globals.err_dir_count++] = switch_core_strdup(globals.pool, val);
						} else {
							globals.base_err_log_dir[globals.err_dir_count++] = switch_core_sprintf(globals.pool, "%s%s%s", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR, val);
						}
					}

				}
			} else if (!strcasecmp(var, "enable-cacert-check") && switch_true(val)) {
				globals.enable_cacert_check = 1;
			} else if (!strcasecmp(var, "ssl-cert-path")) {
				globals.ssl_cert_file = switch_core_strdup(globals.pool, val);
			} else if (!strcasecmp(var, "ssl-key-path")) {
				globals.ssl_key_file = switch_core_strdup(globals.pool, val);
			} else if (!strcasecmp(var, "ssl-key-password")) {
				globals.ssl_key_password = switch_core_strdup(globals.pool, val);
			} else if (!strcasecmp(var, "ssl-version")) {
				globals.ssl_version = switch_core_strdup(globals.pool, val);
			} else if (!strcasecmp(var, "ssl-cacert-file")) {
				globals.ssl_cacert_file = switch_core_strdup(globals.pool, val);
			} else if (!strcasecmp(var, "enable-ssl-verifyhost") && switch_true(val)) {
				globals.enable_ssl_verifyhost = 1;
			} else if (!strcasecmp(var, "auth-scheme")) {
				if (*val == '=') {
					globals.auth_scheme = 0;
					val++;
				}

				if (!strcasecmp(val, "basic")) {
					globals.auth_scheme |= CURLAUTH_BASIC;
				} else if (!strcasecmp(val, "digest")) {
					globals.auth_scheme |= CURLAUTH_DIGEST;
				} else if (!strcasecmp(val, "NTLM")) {
					globals.auth_scheme |= CURLAUTH_NTLM;
				} else if (!strcasecmp(val, "GSS-NEGOTIATE")) {
					globals.auth_scheme |= CURLAUTH_GSSNEGOTIATE;
				} else if (!strcasecmp(val, "any")) {
					globals.auth_scheme = (long)CURLAUTH_ANY;
				}
			} else if (!strcasecmp(var, "encode-values") && !zstr(val)) {
				globals.encode_values = switch_true(val) ? ENCODING_DEFAULT : ENCODING_NONE;
			} else if (!strcasecmp(var, "queue-capacity") && !zstr(val)) {
				int capacity = atoi(val);
				if (capacity > 0) {
					switch_threadattr_t *thd_attr;

					switch_queue_create(&globals.queue, capacity, globals.pool);

					switch_threadattr_create(&thd_attr, globals.pool);
					switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
					switch_thread_create(&globals.thread, thd_attr, cdr_thread, NULL, globals.pool);
				}
			}
		}

		if (!globals.err_dir_count) {
			if (!zstr(globals.base_log_dir)) {
				globals.base_err_log_dir[globals.err_dir_count++] = switch_core_strdup(globals.pool, globals.base_log_dir);
			} else {
				globals.base_err_log_dir[globals.err_dir_count++] = switch_core_sprintf(globals.pool, "%s%sjson_cdr", SWITCH_GLOBAL_dirs.log_dir, SWITCH_PATH_SEPARATOR);
			}
		}
	}

	if (globals.retries && !globals.delay) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Retries set but delay 0 setting to 5 seconds\n");
		globals.delay = 5;
	}

	globals.retries++;

	set_json_cdr_log_dirs();

	if (switch_event_bind_removable(modname, SWITCH_EVENT_TRAP, SWITCH_EVENT_SUBCLASS_ANY, event_handler, NULL, &globals.node) != SWITCH_STATUS_SUCCESS) {
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't bind!\n");
		return SWITCH_STATUS_GENERR;
	}

	/* test global state handlers */
	switch_core_add_state_handler(&state_handlers);

	*module_interface = switch_loadable_module_create_module_interface(pool, modname);

	switch_xml_free(xml);
	return status;
}


SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_json_cdr_shutdown)
{
	int err_dir_index = 0;
	switch_status_t status;

	globals.shutdown = 1;

	if (globals.queue) {
		switch_queue_push(globals.queue, NULL);
		switch_thread_join(&status, globals.thread);
	}

	switch_safe_free(globals.log_dir);

	for (;err_dir_index < globals.err_dir_count; err_dir_index++) {
		switch_safe_free(globals.err_log_dir[err_dir_index]);
	}

	switch_event_unbind(&globals.node);
	switch_core_remove_state_handler(&state_handlers);

	switch_thread_rwlock_destroy(globals.log_path_lock);

	return SWITCH_STATUS_SUCCESS;
}

/* 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:
 */
