[Freeswitch-svn] [commit] r10508 - freeswitch/trunk/scripts/contrib/intralanman/C/lcr/mod_lcr

FreeSWITCH SVN intralanman at freeswitch.org
Fri Nov 21 14:43:55 PST 2008


Author: intralanman
Date: Fri Nov 21 17:43:55 2008
New Revision: 10508

Log:
more patches from rupa

Modified:
   freeswitch/trunk/scripts/contrib/intralanman/C/lcr/mod_lcr/mod_lcr.c

Modified: freeswitch/trunk/scripts/contrib/intralanman/C/lcr/mod_lcr/mod_lcr.c
==============================================================================
--- freeswitch/trunk/scripts/contrib/intralanman/C/lcr/mod_lcr/mod_lcr.c	(original)
+++ freeswitch/trunk/scripts/contrib/intralanman/C/lcr/mod_lcr/mod_lcr.c	Fri Nov 21 17:43:55 2008
@@ -1,561 +1,601 @@
-/* 
- * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
- * Copyright (C) 2005/2006, Anthony Minessale II <anthmct at yahoo.com>
- *
- * 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 <anthmct at yahoo.com>
- * Portions created by the Initial Developer are Copyright (C)
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * 
- * Raymond Chandler <intralanman at gmail.com>
- *
- * mod_lcr.c -- Least Cost Routing Module
- *
- */
-
-#include <switch.h>
-#include <switch_odbc.h>
-
-
-#define LCR_SYNTAX "lcr <digits>"
-
-/* SQL Query places */
-#define LCR_DIGITS_PLACE 0
-#define LCR_CARRIER_PLACE 1
-#define LCR_RATE_PLACE 2
-#define LCR_GATEWAY_PLACE 3
-#define LCR_IP_ADDRESS_PLACE 4
-#define LCR_PORT_PLACE 5
-#define LCR_LSTRIP_PLACE 6
-#define LCR_TSTRIP_PLACE 7
-#define LCR_PREFIX_PLACE 8
-#define LCR_SUFFIX_PLACE 9
-
-
-#define LCR_DIALSTRING_PLACE 3
-#define LCR_HEADERS_COUNT 4
-char headers[LCR_HEADERS_COUNT][32] = {
-	"Digit Match",
-	"Carrier",
-	"Rate",
-	"Dialstring",
-};
-
-struct odbc_obj {
-	switch_odbc_handle_t *handle;
-	SQLHSTMT stmt;
-	SQLCHAR *colbuf;
-	int32_t cblen;
-	SQLCHAR *code;
-	int32_t codelen;
-};
-
-struct lcr_obj {
-	char *carrier_name;
-	char *gateway_name;
-	char *term_host;
-	char *port;
-	char *digit_str;
-	char *prefix;
-	char *suffix;
-	char *dialstring;
-	float rate;
-	size_t lstrip;
-	size_t tstrip;
-	size_t digit_len;
-	struct lcr_obj *next;
-};
-
-struct max_obj {
-	size_t carrier_name;
-	size_t gateway_name;
-	size_t digit_str;
-	size_t rate;
-	size_t dialstring;
-};
-
-typedef struct odbc_obj  odbc_obj_t;
-typedef odbc_obj_t *odbc_handle;
-
-typedef struct lcr_obj lcr_obj_t;
-typedef lcr_obj_t *lcr_route;
-
-typedef struct max_obj max_obj_t;
-typedef max_obj_t *max_len;
-
-struct callback_obj {
-	lcr_route head;
-	int matches;
-	char *lookup_number;
-};
-typedef struct callback_obj callback_t;
-
-static struct {
-	switch_memory_pool_t *pool;
-	char *dbname;
-	char *odbc_dsn;
-	switch_mutex_t *mutex;
-	switch_odbc_handle_t *master_odbc;
-	void *filler1;
-} globals;
-
-
-SWITCH_MODULE_LOAD_FUNCTION(mod_lcr_load);
-SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_lcr_shutdown);
-SWITCH_MODULE_DEFINITION(mod_lcr, mod_lcr_load, mod_lcr_shutdown, NULL);
-
-static char *get_bridge_data(const char *dialed_number, lcr_route cur_route) {
-	size_t lstrip;
-	size_t  tstrip;
-	char *data = NULL;
-	char *destination_number = NULL; 
-
-	destination_number = strdup(dialed_number);
-
-	tstrip = ((cur_route->digit_len - cur_route->tstrip) + 1);
-	lstrip = cur_route->lstrip;
-	
-	if (strlen(destination_number) > tstrip && cur_route->tstrip > 0) {
-		destination_number[tstrip] = '\0';
-	}
-	if (strlen(destination_number) > lstrip && cur_route->lstrip > 0) {
-		destination_number += lstrip;
-	}
-	
-	if (strlen(cur_route->gateway_name) > 0) {
-		 data = switch_mprintf("sofia/gateway/%s/%s%s%s", cur_route->gateway_name
-							   , cur_route->prefix, destination_number, cur_route->suffix
-							   );
-	} else {
-		char port[8];
-		switch_snprintf(port, sizeof(port), ":%s", cur_route->port);
-		data = switch_mprintf("sofia/${use_profile}/%s@%s%s"
-							  , destination_number, cur_route->term_host, (strlen(cur_route->port) > 0 ? port : "")
-							  );
-	}
-	
-	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Returning Dialstring %s\n", data);
-	switch_safe_free(destination_number);
-	return data;
-}
-
-void init_max_lens(max_len maxes) {
-	maxes->digit_str = (headers[LCR_DIGITS_PLACE] == NULL ? 0 : strlen(headers[LCR_DIGITS_PLACE]));
-	maxes->carrier_name = (headers[LCR_CARRIER_PLACE] == NULL ? 0 : strlen(headers[LCR_CARRIER_PLACE]));
-	maxes->gateway_name = (headers[LCR_GATEWAY_PLACE] == NULL ? 0 : strlen(headers[LCR_GATEWAY_PLACE]));
-	maxes->dialstring = (headers[LCR_DIALSTRING_PLACE] == NULL ? 0 : strlen(headers[LCR_DIALSTRING_PLACE]));
-	maxes->digit_str = (headers[LCR_DIGITS_PLACE] == NULL ? 0 : strlen(headers[LCR_DIGITS_PLACE]));
-	maxes->rate = 8;
-}
-
-switch_status_t process_max_lengths(max_obj_t *maxes, lcr_route routes, char *destination_number) {
-	lcr_route current = NULL;
-
-	if (routes == NULL) {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "no routes\n");
-		return SWITCH_STATUS_FALSE;
-	}
-	if (maxes == NULL) {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "no maxes\n");
-		return SWITCH_STATUS_FALSE;
-	}
-
-	init_max_lens(maxes);
-
-	for (current = routes; current; current = current->next) {
-		size_t this_len;
-
-		if (current->gateway_name != NULL) {
-			this_len = strlen(current->gateway_name);
-			if (this_len > maxes->gateway_name) {				
-				maxes->gateway_name = this_len;
-			}
-		}
-		if (current->carrier_name != NULL) {
-			this_len = strlen(current->carrier_name);
-			if (this_len > maxes->carrier_name) {
-				maxes->carrier_name = this_len;
-			}
-		}
-		if (current->dialstring != NULL) {
-			this_len = strlen(current->dialstring);
-			if (this_len > maxes->dialstring) {
-				maxes->dialstring = this_len;
-			}
-		}
-		if (current->digit_str != NULL) {
-			if (current->digit_len > maxes->digit_str) {
-				maxes->digit_str = current->digit_len;
-			} 
-		}
-	}
-	return SWITCH_STATUS_SUCCESS;
-}
-
-static switch_bool_t lcr_execute_sql_callback(char *sql, switch_core_db_callback_func_t callback, void *pdata) {
-	if (globals.odbc_dsn) {
-		switch_odbc_handle_callback_exec(globals.master_odbc, sql, callback, pdata);
-		return SWITCH_TRUE;
-	}
-	return SWITCH_FALSE;
-}
-
-int route_add_callback(void *pArg, int argc, char **argv, char **columnNames) {
-	lcr_route additional = NULL;
-	lcr_route current = NULL;
-	callback_t *cbt = (callback_t *) pArg;
-	
-	cbt->matches++;
-
-	switch_zmalloc(additional, sizeof(lcr_obj_t));
-
-	additional->digit_len = strlen(argv[LCR_DIGITS_PLACE]);
-	additional->digit_str = switch_safe_strdup(argv[LCR_DIGITS_PLACE]);
-	additional->suffix = switch_safe_strdup(argv[LCR_SUFFIX_PLACE]);
-	additional->prefix = switch_safe_strdup(argv[LCR_PREFIX_PLACE]);
-	additional->carrier_name = switch_safe_strdup(argv[LCR_CARRIER_PLACE]);
-	additional->rate = (float)atof(argv[LCR_RATE_PLACE]);
-	additional->gateway_name = switch_safe_strdup(argv[LCR_GATEWAY_PLACE]);
-	additional->term_host = switch_safe_strdup(argv[LCR_IP_ADDRESS_PLACE]);
-	additional->port = switch_safe_strdup(argv[LCR_PORT_PLACE]);
-	additional->lstrip = atoi(argv[LCR_LSTRIP_PLACE]);
-	additional->tstrip = atoi(argv[LCR_TSTRIP_PLACE]);
-	additional->dialstring = get_bridge_data(cbt->lookup_number, additional);
-
-	if (cbt->head == NULL) {
-		additional->next = cbt->head;
-		cbt->head = additional;
-
-		return SWITCH_STATUS_SUCCESS;
-	}
-
-	for (current = cbt->head; current; current = current->next) {
-
-		if (switch_strlen_zero(additional->gateway_name) && switch_strlen_zero(additional->term_host) && switch_strlen_zero(additional->port) ) {
-			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING
-							  , "WTF?!? There's no way to dial this Gateway: %s IP:Port %s:%s\n"
-							  , additional->gateway_name, additional->term_host, additional->port
-							  );
-			break;
-		}
-			
-		if (!strcmp(current->gateway_name, additional->gateway_name)) {
-			if (!strcmp(current->term_host, additional->term_host) && !strcmp(current->port, additional->port)) {
-				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG
-								  , "Ignoring Duplicate route for termination point (%s:%s)\n"
-								  , additional->term_host, additional->port
-								  );
-				switch_safe_free(additional);
-				break;
-			}
-		}
-			
-		if (current->next == NULL) {
-			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "adding route to end of list\n");
-			current->next = additional;
-			break;
-		}
-	}
-	return SWITCH_STATUS_SUCCESS;
-}
-
-switch_status_t lcr_do_lookup(char *digits, callback_t *cb_struct) {
-	/* instantiate the object/struct we defined earlier */
-	switch_stream_handle_t sql_stream = { 0 };
-	size_t n, digit_len = strlen(digits);
-	char *digits_copy;
-
-	if (switch_strlen_zero(digits)) {
-		return SWITCH_FALSE;
-	}
-
-   	digits_copy = strdup(digits);
-
-	SWITCH_STANDARD_STREAM(sql_stream);
-
-	/* set up the query to be executed */
-	sql_stream.write_function(&sql_stream, 
-							  "SELECT l.digits, c.Carrier_Name, l.rate, cg.gateway, cg.term_host, cg.port, l.lead_strip, l.trail_strip, l.prefix, l.suffix "
-							  );
-	sql_stream.write_function(&sql_stream, "FROM lcr l JOIN carriers c ON l.carrier_id=c.id JOIN carrier_gateway cg ON c.id=cg.carrier_id ");
-	for (n = digit_len; n > 0; n--) {
-		digits_copy[n] = '\0';
-		sql_stream.write_function(&sql_stream, "%s digits='%s' ", (n==digit_len ? "WHERE" : "OR"), digits_copy);
-	}
-	sql_stream.write_function(&sql_stream, "ORDER BY digits DESC, rate;");
-
-	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "%s\n", (char *)sql_stream.data);    
-
-	lcr_execute_sql_callback((char *)sql_stream.data, route_add_callback, cb_struct);
-	switch_safe_free(sql_stream.data);
-
-	return SWITCH_STATUS_SUCCESS;
-}
-
-static switch_status_t lcr_load_config() {
-	char *cf = "lcr.conf";
-	switch_xml_t cfg, xml, settings, param;
-	switch_status_t status = SWITCH_STATUS_SUCCESS;
-	char *odbc_user = NULL;
-	char *odbc_pass = NULL;
-
-	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 = NULL;
-			char *val = NULL;
-			var = (char *) switch_xml_attr_soft(param, "name");
-			val = (char *) switch_xml_attr_soft(param, "value");
-			if (!strcasecmp(var, "odbc-dsn") && !switch_strlen_zero(val)) {
-				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "odbc_dsn is %s\n", val);
-				globals.odbc_dsn = switch_core_strdup(globals.pool, val);
-				if ((odbc_user = strchr(globals.odbc_dsn, ':'))) {
-					*odbc_user++ = '\0';
-					if ((odbc_pass = strchr(odbc_user, ':'))) {
-						*odbc_pass++ = '\0';
-					}
-				}
-			}
-		}
-	}
-	if (globals.odbc_dsn) {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO
-						  , "dsn is \"%s\", user is \"%s\", and password is \"%s\"\n"
-						  , globals.odbc_dsn, odbc_user, odbc_pass
-						  );
-		if (!(globals.master_odbc = switch_odbc_handle_new(globals.odbc_dsn, odbc_user, odbc_pass))) {
-			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open ODBC Database!\n");
-			status = SWITCH_STATUS_FALSE;
-			goto done;
-		}
-		if (switch_odbc_handle_connect(globals.master_odbc) != SWITCH_ODBC_SUCCESS) {
-			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open ODBC Database!\n");
-			status = SWITCH_STATUS_FALSE;
-			goto done;
-		}
-	}
- done:
-	switch_xml_free(xml);
-	return status;
-}
-
-static void destroy_list(lcr_route *head) {
-	lcr_route cur = NULL, top = *head;
-
-	while (top) {
-		cur = top;
-		top = top->next;
-		switch_safe_free(cur->digit_str);
-		switch_safe_free(cur->suffix);
-		switch_safe_free(cur->prefix);
-		switch_safe_free(cur->carrier_name);
-		switch_safe_free(cur->gateway_name);
-		switch_safe_free(cur);
-	}
-	*head = NULL;
-}
-
-SWITCH_STANDARD_DIALPLAN(lcr_dialplan_hunt) {
-	switch_caller_extension_t *extension = NULL;
-	switch_channel_t *channel = switch_core_session_get_channel(session);
-	callback_t routes = { 0 };
-	lcr_route cur_route = { 0 };
-	char *bridge_data = NULL;;
-
-	if (!caller_profile) {
-		caller_profile = switch_channel_get_caller_profile(channel);
-	}
-
-	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "LCR Lookup on %s\n", caller_profile->destination_number);
-	routes.lookup_number = caller_profile->destination_number;
-	if (lcr_do_lookup(caller_profile->destination_number, &routes) == SWITCH_STATUS_SUCCESS) {
-		if ((extension = switch_caller_extension_new(session, caller_profile->destination_number, caller_profile->destination_number)) == 0) {
-			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "memory error!\n");
-			destroy_list(&routes.head);
-			return NULL;
-		}
-
-		switch_channel_set_variable(channel, SWITCH_CONTINUE_ON_FAILURE_VARIABLE, "true");
-		switch_channel_set_variable(channel, SWITCH_HANGUP_AFTER_BRIDGE_VARIABLE, "true");
-
-		for (cur_route = routes.head; cur_route; cur_route = cur_route->next) {
-			//bridge_data = get_bridge_data(caller_profile->destination_number, cur_route);
-			switch_caller_extension_add_application(session, extension, "bridge", cur_route->dialstring);
-			switch_safe_free(bridge_data);
-		}
-		destroy_list(&routes.head);
-	} else {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "LCR lookup failed for %s\n", caller_profile->destination_number);
-	}
-	switch_safe_free(bridge_data);
-
-	return extension;
-}
-
-void str_repeat(size_t how_many, char *what, switch_stream_handle_t *str_stream) {
-	size_t i;
-
-	//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "repeating %d of '%s'\n", how_many, what);
-
-	for (i=0; i<how_many; i++) {
-		str_stream->write_function(str_stream, "%s", what);
-	}
-}
-
-SWITCH_STANDARD_API(dialplan_lcr_function) {
-	char *argv[4] = { 0 };
-	int argc;
-	char *mydata = NULL;
-	char *dialstring = NULL;
-	char *destination_number = NULL;
-	lcr_route current = NULL;
-	max_obj_t maximum_lengths = { 0 };
-	callback_t cb_struct = { 0 };
-	//switch_malloc(maximum_lengths, sizeof(max_obj_t));
-
-	if (switch_strlen_zero(cmd)) {
-		goto usage;
-	}
-
-	mydata = switch_safe_strdup(cmd);
-
-	if ((argc = switch_separate_string(mydata, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
-		destination_number = strdup(argv[0]);
-		cb_struct.lookup_number = destination_number;
-
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO
-						  , "data passed to lcr is [%s]\n", cmd
-						  );
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO
-						  , "lcr lookup returned [%d]\n"
-						  , lcr_do_lookup(destination_number, &cb_struct)
-						  );
-		if (cb_struct.head != NULL) {
-			size_t len;
-
-			process_max_lengths(&maximum_lengths, cb_struct.head, destination_number);
-
-			stream->write_function(stream, " | %s", headers[LCR_DIGITS_PLACE]);
-			if ((len = (maximum_lengths.digit_str - strlen(headers[LCR_DIGITS_PLACE]))) > 0) {
-				str_repeat(len, " ", stream);
-			}
-
-			stream->write_function(stream, " | %s", headers[LCR_CARRIER_PLACE]);
-			if ((len = (maximum_lengths.carrier_name - strlen(headers[LCR_CARRIER_PLACE]))) > 0) {
-				str_repeat(len, " ", stream);
-			}
-
-			stream->write_function(stream, " | %s", headers[LCR_RATE_PLACE]);
-			if ((len = (maximum_lengths.rate - strlen(headers[LCR_RATE_PLACE]))) > 0) {
-				str_repeat(len, " ", stream);
-			}
-
-			stream->write_function(stream, " | %s", headers[LCR_DIALSTRING_PLACE]);
-			if ((len = (maximum_lengths.dialstring - strlen(headers[LCR_DIALSTRING_PLACE]))) > 0) {
-				str_repeat(len, " ", stream);
-			}
-
-			stream->write_function(stream, " |\n");
-
-			current = cb_struct.head;
-			while (current) {
-				char srate[10];
-
-				dialstring = get_bridge_data(destination_number, current);
-				switch_snprintf(srate, sizeof(srate), "%0.5f", current->rate);
-
-				stream->write_function(stream, " | %s", current->digit_str);
-				str_repeat((maximum_lengths.digit_str - current->digit_len), " ", stream);
-				
-				stream->write_function(stream, " | %s", current->carrier_name );
-				str_repeat((maximum_lengths.carrier_name - strlen(current->carrier_name)), " ", stream);
-				
-				stream->write_function(stream, " | %s", srate );
-				str_repeat((maximum_lengths.rate - strlen(srate)), " ", stream);
-								
-				stream->write_function(stream, " | %s", dialstring);
-				str_repeat((maximum_lengths.dialstring - strlen(dialstring)), " ", stream);
-				
-				stream->write_function(stream, " |\n");
-				
-				switch_safe_free(dialstring);
-				current = current->next;
-			}
-
-			destroy_list(&cb_struct.head);
-			switch_safe_free(dialstring);
-		} else {
-			stream->write_function(stream, "No Routes To Display\n");
-		}
-	}
-
-	switch_safe_free(mydata);
-	return SWITCH_STATUS_SUCCESS;
- usage:
-	stream->write_function(stream, "USAGE: %s\n", LCR_SYNTAX);
-	return SWITCH_STATUS_SUCCESS;
-}
-
-SWITCH_MODULE_LOAD_FUNCTION(mod_lcr_load) {
-	switch_api_interface_t *dialplan_lcr_api_interface;
-	switch_dialplan_interface_t *dp_interface;
-	
-	*module_interface = switch_loadable_module_create_module_interface(pool, modname);
-
-#ifndef SWITCH_HAVE_ODBC
-	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "You must have ODBC support in FreeSWITCH to use this module\n");
-	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "\t./configure --enable-core-odbc-support\n");
-	return SWITCH_STATUS_FALSE;
-#endif
-
-	globals.pool = pool;
-
-	if (lcr_load_config() != SWITCH_STATUS_SUCCESS) {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unable to load lcr config file\n");
-		return SWITCH_STATUS_FALSE;
-	}
-	if (switch_mutex_init(&globals.mutex, SWITCH_MUTEX_NESTED, globals.pool) != SWITCH_STATUS_SUCCESS) {
-		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "failed to initialize mutex\n");
-	}
-
-	SWITCH_ADD_API(dialplan_lcr_api_interface, "lcr", "Least Cost Routing Module", dialplan_lcr_function, LCR_SYNTAX);
-	SWITCH_ADD_DIALPLAN(dp_interface, "lcr", lcr_dialplan_hunt);
-	
-	/* indicate that the module should continue to be loaded */
-	return SWITCH_STATUS_SUCCESS;
-}
-
-SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_lcr_shutdown) {
-	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 expandtab:
- */
+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005/2006, Anthony Minessale II <anthmct at yahoo.com>
+ *
+ * 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 <anthmct at yahoo.com>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * 
+ * Raymond Chandler <intralanman at gmail.com>
+ * Rupa Schomaker <rupa at rupa.com>
+ *
+ * mod_lcr.c -- Least Cost Routing Module
+ *
+ */
+
+#include <switch.h>
+#include <switch_odbc.h>
+
+
+#define LCR_SYNTAX "lcr <digits>"
+
+/* SQL Query places */
+#define LCR_DIGITS_PLACE 0
+#define LCR_CARRIER_PLACE 1
+#define LCR_RATE_PLACE 2
+#define LCR_GW_PREFIX_PLACE 3
+#define LCR_GW_SUFFIX_PLACE 4
+#define LCR_LSTRIP_PLACE 5
+#define LCR_TSTRIP_PLACE 6
+#define LCR_PREFIX_PLACE 7
+#define LCR_SUFFIX_PLACE 8
+
+
+#define LCR_DIALSTRING_PLACE 3
+#define LCR_HEADERS_COUNT 4
+char headers[LCR_HEADERS_COUNT][32] = {
+	"Digit Match",
+	"Carrier",
+	"Rate",
+	"Dialstring",
+};
+
+struct odbc_obj {
+	switch_odbc_handle_t *handle;
+	SQLHSTMT stmt;
+	SQLCHAR *colbuf;
+	int32_t cblen;
+	SQLCHAR *code;
+	int32_t codelen;
+};
+
+struct lcr_obj {
+	char *carrier_name;
+	char *gw_prefix;
+	char *gw_suffix;
+	char *digit_str;
+	char *prefix;
+	char *suffix;
+	char *dialstring;
+	float rate;
+	char *rate_str;
+	size_t lstrip;
+	size_t tstrip;
+	size_t digit_len;
+	struct lcr_obj *next;
+};
+
+struct max_obj {
+	size_t carrier_name;
+	size_t digit_str;
+	size_t rate;
+	size_t dialstring;
+};
+
+typedef struct odbc_obj  odbc_obj_t;
+typedef odbc_obj_t *odbc_handle;
+
+typedef struct lcr_obj lcr_obj_t;
+typedef lcr_obj_t *lcr_route;
+
+typedef struct max_obj max_obj_t;
+typedef max_obj_t *max_len;
+
+struct callback_obj {
+	lcr_route head;
+	int matches;
+	char *lookup_number;
+};
+typedef struct callback_obj callback_t;
+
+static struct {
+	switch_memory_pool_t *pool;
+	char *dbname;
+	char *odbc_dsn;
+	switch_mutex_t *mutex;
+	switch_odbc_handle_t *master_odbc;
+	void *filler1;
+} globals;
+
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_lcr_load);
+SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_lcr_shutdown);
+SWITCH_MODULE_DEFINITION(mod_lcr, mod_lcr_load, mod_lcr_shutdown, NULL);
+
+static char *get_bridge_data(const char *dialed_number, lcr_route cur_route) {
+	size_t lstrip;
+	size_t  tstrip;
+	char *data = NULL;
+	char *destination_number = NULL;
+	char *orig_destination_number = NULL; 
+
+	orig_destination_number = destination_number = strdup(dialed_number);
+
+	tstrip = ((cur_route->digit_len - cur_route->tstrip) + 1);
+	lstrip = cur_route->lstrip;
+	
+	if (strlen(destination_number) > tstrip && cur_route->tstrip > 0) {
+		destination_number[tstrip] = '\0';
+	}
+	if (strlen(destination_number) > lstrip && cur_route->lstrip > 0) {
+		destination_number += lstrip;
+	}
+	
+	data = switch_mprintf("%s%s%s%s%s", cur_route->gw_prefix, cur_route->prefix
+						  , destination_number, cur_route->suffix, cur_route->gw_suffix);
+		
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Returning Dialstring %s\n", data);
+	switch_safe_free(orig_destination_number);
+	return data;
+}
+
+void init_max_lens(max_len maxes) {
+	maxes->digit_str = (headers[LCR_DIGITS_PLACE] == NULL ? 0 : strlen(headers[LCR_DIGITS_PLACE]));
+	maxes->carrier_name = (headers[LCR_CARRIER_PLACE] == NULL ? 0 : strlen(headers[LCR_CARRIER_PLACE]));
+	maxes->dialstring = (headers[LCR_DIALSTRING_PLACE] == NULL ? 0 : strlen(headers[LCR_DIALSTRING_PLACE]));
+	maxes->digit_str = (headers[LCR_DIGITS_PLACE] == NULL ? 0 : strlen(headers[LCR_DIGITS_PLACE]));
+	maxes->rate = 8;
+}
+
+switch_status_t process_max_lengths(max_obj_t *maxes, lcr_route routes, char *destination_number) {
+	lcr_route current = NULL;
+
+	if (routes == NULL) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "no routes\n");
+		return SWITCH_STATUS_FALSE;
+	}
+	if (maxes == NULL) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "no maxes\n");
+		return SWITCH_STATUS_FALSE;
+	}
+
+	init_max_lens(maxes);
+
+	for (current = routes; current; current = current->next) {
+		size_t this_len;
+
+		if (current->carrier_name != NULL) {
+			this_len = strlen(current->carrier_name);
+			if (this_len > maxes->carrier_name) {
+				maxes->carrier_name = this_len;
+			}
+		}
+		if (current->dialstring != NULL) {
+			this_len = strlen(current->dialstring);
+			if (this_len > maxes->dialstring) {
+				maxes->dialstring = this_len;
+			}
+		}
+		if (current->digit_str != NULL) {
+			if (current->digit_len > maxes->digit_str) {
+				maxes->digit_str = current->digit_len;
+			} 
+		}
+		if (current->rate_str != NULL) {
+			this_len = strlen(current->rate_str);
+			if (this_len > maxes->rate) {
+				maxes->rate = this_len;
+			}
+		}
+	}
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_bool_t lcr_execute_sql_callback(char *sql, switch_core_db_callback_func_t callback, void *pdata) {
+	if (globals.odbc_dsn) {
+		switch_odbc_handle_callback_exec(globals.master_odbc, sql, callback, pdata);
+		return SWITCH_TRUE;
+	}
+	return SWITCH_FALSE;
+}
+
+int route_add_callback(void *pArg, int argc, char **argv, char **columnNames) {
+	lcr_route additional = NULL;
+	lcr_route current = NULL;
+	callback_t *cbt = (callback_t *) pArg;
+	char srate[10];
+	
+	cbt->matches++;
+
+	switch_zmalloc(additional, sizeof(lcr_obj_t));
+
+	additional->digit_len = strlen(argv[LCR_DIGITS_PLACE]);
+	additional->digit_str = switch_safe_strdup(argv[LCR_DIGITS_PLACE]);
+	additional->suffix = switch_safe_strdup(argv[LCR_SUFFIX_PLACE]);
+	additional->prefix = switch_safe_strdup(argv[LCR_PREFIX_PLACE]);
+	additional->carrier_name = switch_safe_strdup(argv[LCR_CARRIER_PLACE]);
+	additional->rate = (float)atof(argv[LCR_RATE_PLACE]);
+	switch_snprintf(srate, sizeof(srate), "%0.5f", additional->rate);
+	additional->rate_str = switch_safe_strdup(srate);
+	additional->gw_prefix = switch_safe_strdup(argv[LCR_GW_PREFIX_PLACE]);
+	additional->gw_suffix = switch_safe_strdup(argv[LCR_GW_SUFFIX_PLACE]);
+	additional->lstrip = atoi(argv[LCR_LSTRIP_PLACE]);
+	additional->tstrip = atoi(argv[LCR_TSTRIP_PLACE]);
+	additional->dialstring = get_bridge_data(cbt->lookup_number, additional);
+
+	if (cbt->head == NULL) {
+		additional->next = cbt->head;
+		cbt->head = additional;
+
+		return SWITCH_STATUS_SUCCESS;
+	}
+
+	for (current = cbt->head; current; current = current->next) {
+
+	if (switch_strlen_zero(additional->gw_prefix) && switch_strlen_zero(additional->gw_suffix) ) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING
+							  , "WTF?!? There's no way to dial this Gateway: Carrier: \"%s\" Prefix: \"%s\", Suffix \"%s\"\n"
+							  , additional->carrier_name
+							  , additional->gw_prefix, additional->gw_suffix
+							  );
+			break;
+		}
+			
+		if (!strcmp(current->gw_prefix, additional->gw_prefix) && !strcmp(current->gw_suffix, additional->gw_suffix)) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG
+							  , "Ignoring Duplicate route for termination point (%s:%s)\n"
+							  , additional->gw_prefix, additional->gw_suffix
+							  );
+			switch_safe_free(additional);
+			break;
+		}
+			
+		if (current->next == NULL) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "adding route to end of list\n");
+			current->next = additional;
+			break;
+		}
+	}
+	return SWITCH_STATUS_SUCCESS;
+}
+
+switch_status_t lcr_do_lookup(char *digits, callback_t *cb_struct) {
+	/* instantiate the object/struct we defined earlier */
+	switch_stream_handle_t sql_stream = { 0 };
+	size_t n, digit_len = strlen(digits);
+	char *digits_copy;
+
+	if (switch_strlen_zero(digits)) {
+		return SWITCH_FALSE;
+	}
+
+   	digits_copy = strdup(digits);
+
+	SWITCH_STANDARD_STREAM(sql_stream);
+
+	/* set up the query to be executed */
+	sql_stream.write_function(&sql_stream, 
+							  "SELECT l.digits, c.carrier_name, l.rate, cg.prefix AS gw_prefix, cg.suffix AS gw_suffix, l.lead_strip, l.trail_strip, l.prefix, l.suffix "
+							  );
+	sql_stream.write_function(&sql_stream, "FROM lcr l JOIN carriers c ON l.carrier_id=c.id JOIN carrier_gateway cg ON c.id=cg.carrier_id ");
+	for (n = digit_len; n > 0; n--) {
+		digits_copy[n] = '\0';
+		sql_stream.write_function(&sql_stream, "%s digits='%s' ", (n==digit_len ? "WHERE" : "OR"), digits_copy);
+	}
+	sql_stream.write_function(&sql_stream, "ORDER BY digits DESC, rate;");
+
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "%s\n", (char *)sql_stream.data);    
+
+	lcr_execute_sql_callback((char *)sql_stream.data, route_add_callback, cb_struct);
+	switch_safe_free(sql_stream.data);
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t lcr_load_config() {
+	char *cf = "lcr.conf";
+	switch_xml_t cfg, xml, settings, param;
+	switch_status_t status = SWITCH_STATUS_SUCCESS;
+	char *odbc_user = NULL;
+	char *odbc_pass = NULL;
+
+	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 = NULL;
+			char *val = NULL;
+			var = (char *) switch_xml_attr_soft(param, "name");
+			val = (char *) switch_xml_attr_soft(param, "value");
+			if (!strcasecmp(var, "odbc-dsn") && !switch_strlen_zero(val)) {
+				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "odbc_dsn is %s\n", val);
+				globals.odbc_dsn = switch_core_strdup(globals.pool, val);
+				if ((odbc_user = strchr(globals.odbc_dsn, ':'))) {
+					*odbc_user++ = '\0';
+					if ((odbc_pass = strchr(odbc_user, ':'))) {
+						*odbc_pass++ = '\0';
+					}
+				}
+			}
+		}
+	}
+	if (globals.odbc_dsn) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO
+						  , "dsn is \"%s\", user is \"%s\", and password is \"%s\"\n"
+						  , globals.odbc_dsn, odbc_user, odbc_pass
+						  );
+		if (!(globals.master_odbc = switch_odbc_handle_new(globals.odbc_dsn, odbc_user, odbc_pass))) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open ODBC Database!\n");
+			status = SWITCH_STATUS_FALSE;
+			goto done;
+		}
+		if (switch_odbc_handle_connect(globals.master_odbc) != SWITCH_ODBC_SUCCESS) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Cannot Open ODBC Database!\n");
+			status = SWITCH_STATUS_FALSE;
+			goto done;
+		}
+	}
+ done:
+	switch_xml_free(xml);
+	return status;
+}
+
+static void destroy_list(lcr_route *head) {
+	lcr_route cur = NULL, top = *head;
+
+	while (top) {
+		cur = top;
+		top = top->next;
+		switch_safe_free(cur->digit_str);
+		switch_safe_free(cur->suffix);
+		switch_safe_free(cur->prefix);
+		switch_safe_free(cur->carrier_name);
+		switch_safe_free(cur->gw_prefix);
+		switch_safe_free(cur->gw_suffix);
+		switch_safe_free(cur->rate_str);
+		switch_safe_free(cur);
+	}
+	*head = NULL;
+}
+
+SWITCH_STANDARD_DIALPLAN(lcr_dialplan_hunt) {
+	switch_caller_extension_t *extension = NULL;
+	switch_channel_t *channel = switch_core_session_get_channel(session);
+	callback_t routes = { 0 };
+	lcr_route cur_route = { 0 };
+	char *bridge_data = NULL;;
+
+	if (!caller_profile) {
+		caller_profile = switch_channel_get_caller_profile(channel);
+	}
+
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "LCR Lookup on %s\n", caller_profile->destination_number);
+	routes.lookup_number = caller_profile->destination_number;
+	if (lcr_do_lookup(caller_profile->destination_number, &routes) == SWITCH_STATUS_SUCCESS) {
+		if ((extension = switch_caller_extension_new(session, caller_profile->destination_number, caller_profile->destination_number)) == 0) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "memory error!\n");
+			destroy_list(&routes.head);
+			return NULL;
+		}
+
+		switch_channel_set_variable(channel, SWITCH_CONTINUE_ON_FAILURE_VARIABLE, "true");
+		switch_channel_set_variable(channel, SWITCH_HANGUP_AFTER_BRIDGE_VARIABLE, "true");
+
+		for (cur_route = routes.head; cur_route; cur_route = cur_route->next) {
+			//bridge_data = get_bridge_data(caller_profile->destination_number, cur_route);
+			switch_caller_extension_add_application(session, extension, "bridge", cur_route->dialstring);
+			switch_safe_free(bridge_data);
+		}
+		destroy_list(&routes.head);
+	} else {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "LCR lookup failed for %s\n", caller_profile->destination_number);
+	}
+	switch_safe_free(bridge_data);
+
+	return extension;
+}
+
+void str_repeat(size_t how_many, char *what, switch_stream_handle_t *str_stream) {
+	size_t i;
+
+	//switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "repeating %d of '%s'\n", how_many, what);
+
+	for (i=0; i<how_many; i++) {
+		str_stream->write_function(str_stream, "%s", what);
+	}
+}
+
+SWITCH_STANDARD_APP(lcr_app_function)
+{
+	int argc = 0;
+	char *argv[4] = { 0 };
+	char *mydata = NULL;
+	char *dest = NULL;
+	char rbuf[1024] = "";
+	char vbuf[1024] = "";
+	char *rbp = rbuf;
+	switch_size_t l = 0, rbl = sizeof(rbuf);
+	uint32_t cnt = 1;
+	switch_channel_t *channel = switch_core_session_get_channel(session);
+	char *last_delim = "|";
+	callback_t routes = { 0 };
+	lcr_route cur_route = { 0 };
+
+	if (!(mydata = switch_core_session_strdup(session, data))) {
+		return;
+	}
+
+	if ((argc = switch_separate_string(mydata, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
+		dest = argv[0];
+
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "LCR Lookup on %s\n", dest);
+		routes.lookup_number = dest;
+		if (lcr_do_lookup(dest, &routes) == SWITCH_STATUS_SUCCESS) {
+			for (cur_route = routes.head; cur_route; cur_route = cur_route->next) {
+				switch_snprintf(vbuf, sizeof(vbuf), "lcr_route_%d", cnt++);
+				switch_channel_set_variable(channel, vbuf, cur_route->dialstring);
+				switch_snprintf(rbp, rbl, "%s|", cur_route->dialstring);
+				last_delim = end_of_p(rbp);
+				l = strlen(cur_route->dialstring) + 1;
+				rbp += l;
+				rbl -= l;
+			}
+			switch_snprintf(vbuf, sizeof(vbuf), "%d", cnt - 1);
+			switch_channel_set_variable(channel, "lcr_route_count", vbuf);
+			*(rbuf + strlen(rbuf) - 1) = '\0';
+			switch_channel_set_variable(channel, "lcr_auto_route", rbuf);
+			destroy_list(&routes.head);
+		} else {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "LCR lookup failed for %s\n", dest);
+		}
+	}
+}
+
+SWITCH_STANDARD_API(dialplan_lcr_function) {
+	char *argv[4] = { 0 };
+	int argc;
+	char *mydata = NULL;
+	char *dialstring = NULL;
+	char *destination_number = NULL;
+	lcr_route current = NULL;
+	max_obj_t maximum_lengths = { 0 };
+	callback_t cb_struct = { 0 };
+	//switch_malloc(maximum_lengths, sizeof(max_obj_t));
+
+	if (switch_strlen_zero(cmd)) {
+		goto usage;
+	}
+
+	mydata = switch_safe_strdup(cmd);
+
+	if ((argc = switch_separate_string(mydata, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
+		destination_number = strdup(argv[0]);
+		cb_struct.lookup_number = destination_number;
+
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO
+						  , "data passed to lcr is [%s]\n", cmd
+						  );
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO
+						  , "lcr lookup returned [%d]\n"
+						  , lcr_do_lookup(destination_number, &cb_struct)
+						  );
+		if (cb_struct.head != NULL) {
+			size_t len;
+
+			process_max_lengths(&maximum_lengths, cb_struct.head, destination_number);
+
+			stream->write_function(stream, " | %s", headers[LCR_DIGITS_PLACE]);
+			if ((len = (maximum_lengths.digit_str - strlen(headers[LCR_DIGITS_PLACE]))) > 0) {
+				str_repeat(len, " ", stream);
+			}
+
+			stream->write_function(stream, " | %s", headers[LCR_CARRIER_PLACE]);
+			if ((len = (maximum_lengths.carrier_name - strlen(headers[LCR_CARRIER_PLACE]))) > 0) {
+				str_repeat(len, " ", stream);
+			}
+
+			stream->write_function(stream, " | %s", headers[LCR_RATE_PLACE]);
+			if ((len = (maximum_lengths.rate - strlen(headers[LCR_RATE_PLACE]))) > 0) {
+				str_repeat(len, " ", stream);
+			}
+
+			stream->write_function(stream, " | %s", headers[LCR_DIALSTRING_PLACE]);
+			if ((len = (maximum_lengths.dialstring - strlen(headers[LCR_DIALSTRING_PLACE]))) > 0) {
+				str_repeat(len, " ", stream);
+			}
+
+			stream->write_function(stream, " |\n");
+
+			current = cb_struct.head;
+			while (current) {
+
+				dialstring = get_bridge_data(destination_number, current);
+
+				stream->write_function(stream, " | %s", current->digit_str);
+				str_repeat((maximum_lengths.digit_str - current->digit_len), " ", stream);
+				
+				stream->write_function(stream, " | %s", current->carrier_name );
+				str_repeat((maximum_lengths.carrier_name - strlen(current->carrier_name)), " ", stream);
+				
+				stream->write_function(stream, " | %s", current->rate_str );
+				str_repeat((maximum_lengths.rate - strlen(current->rate_str)), " ", stream);
+								
+				stream->write_function(stream, " | %s", dialstring);
+				str_repeat((maximum_lengths.dialstring - strlen(dialstring)), " ", stream);
+				
+				stream->write_function(stream, " |\n");
+				
+				switch_safe_free(dialstring);
+				current = current->next;
+			}
+
+			destroy_list(&cb_struct.head);
+			switch_safe_free(dialstring);
+		} else {
+			stream->write_function(stream, "No Routes To Display\n");
+		}
+	}
+
+	switch_safe_free(mydata);
+	return SWITCH_STATUS_SUCCESS;
+ usage:
+	stream->write_function(stream, "USAGE: %s\n", LCR_SYNTAX);
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_lcr_load) {
+	switch_api_interface_t *dialplan_lcr_api_interface;
+	switch_application_interface_t *app_interface;
+	switch_dialplan_interface_t *dp_interface;
+	
+	*module_interface = switch_loadable_module_create_module_interface(pool, modname);
+
+#ifndef SWITCH_HAVE_ODBC
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "You must have ODBC support in FreeSWITCH to use this module\n");
+	switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "\t./configure --enable-core-odbc-support\n");
+	return SWITCH_STATUS_FALSE;
+#endif
+
+	globals.pool = pool;
+
+	if (lcr_load_config() != SWITCH_STATUS_SUCCESS) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unable to load lcr config file\n");
+		return SWITCH_STATUS_FALSE;
+	}
+	if (switch_mutex_init(&globals.mutex, SWITCH_MUTEX_NESTED, globals.pool) != SWITCH_STATUS_SUCCESS) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "failed to initialize mutex\n");
+	}
+
+	SWITCH_ADD_API(dialplan_lcr_api_interface, "lcr", "Least Cost Routing Module", dialplan_lcr_function, LCR_SYNTAX);
+	SWITCH_ADD_APP(app_interface, "lcr", "Perform an LCR lookup", "Perform an LCR lookup",
+				   lcr_app_function, "<number>", SAF_SUPPORT_NOMEDIA);
+	SWITCH_ADD_DIALPLAN(dp_interface, "lcr", lcr_dialplan_hunt);
+	
+	/* indicate that the module should continue to be loaded */
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_lcr_shutdown) {
+	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 expandtab:
+ */



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