mod_esl: New module. Allow to Passtruth API command to a remote FS via ESL. …

mod_esl: New module.  Allow to Passtruth API command to a remote FS via ESL.  First api doesn't keep a persistant connection to farend server explaining the name single_esl.  Future version will include settings to keep connections alive for multiple performance

build/modules.conf.in

@@ -42,6 +42,7 @@ applications/mod_valet_parking
 #applications/mod_ladspa
 #applications/mod_mongo
 #applications/mod_abstraction
+#applications/mod_esl
 applications/mod_sms
 codecs/mod_g723_1
 codecs/mod_amr

src/mod/applications/mod_esl/Makefile

+BASE=../../../..
+
+ESL_DIR = $(switch_srcdir)/libs/esl
+
+LOCAL_LDFLAGS=-L$(ESL_DIR) -lesl
+LOCAL_OBJS=$(ESL_DIR)/libesl.so
+LOCAL_LIBADD=$(ESL_DIR)/libesl.so
+LOCAL_CFLAGS=-I$(ESL_DIR)/src/include
+
+include $(BASE)/build/modmake.rules
+
+$(ESL_DIR)/libesl.so: $(ESL_DIR)/Makefile
+	cd $(ESL_DIR) && $(MAKE) -j1

src/mod/applications/mod_esl/mod_esl.c

+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2011, 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):
+ * 
+ * Marc Olivier Chouinard <mochouinard@moctel.com>
+ *
+ *
+ * mod_esl.c -- Allow to generate remote ESL commands
+ *
+ */
+#include <switch.h>
+
+#include <esl.h>
+
+/* Prototypes */
+SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_esl_shutdown);
+SWITCH_MODULE_RUNTIME_FUNCTION(mod_esl_runtime);
+SWITCH_MODULE_LOAD_FUNCTION(mod_esl_load);
+
+/* SWITCH_MODULE_DEFINITION(name, load, shutdown, runtime) 
+ * Defines a switch_loadable_module_function_table_t and a static const char[] modname
+ */
+SWITCH_MODULE_DEFINITION(mod_esl, mod_esl_load, mod_esl_shutdown, NULL);
+
+SWITCH_STANDARD_API(single_esl_api_function)
+{
+	esl_handle_t handle = {{0}};
+	char *host = "127.0.0.1";
+	char *s_port = NULL;
+	int port = 8021;
+	char *username = NULL;
+	char *password = "ClueCon";
+	char *args = NULL;
+	char *s_timeout = NULL;
+	int timeout = 5000;
+	char *dup = strdup(cmd);
+	char *send = NULL;
+
+	username = dup;
+
+	if (username && (password = strchr(username, '|'))) {
+		*password++ = '\0';
+	}
+
+	if (password && (host = strchr(password, ' '))) {
+		*host++ = '\0';
+	}   
+
+	if (host && (s_timeout = strchr(host, ' '))) {
+		*s_timeout++ = '\0';
+	}
+
+	if (host && (s_port = strchr(host, ':'))) {
+		*s_port++ = '\0';
+	}
+
+	if (s_timeout && (args = strchr(s_timeout, ' '))) {
+		*args++ = '\0';
+	}
+
+	if (!zstr(s_port)) {
+		port = atoi(s_port);
+	}
+
+	if (zstr(host) || zstr(password) || zstr(args) || zstr(s_timeout)) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Bad parameters\n");
+		goto end;
+	}
+
+
+	timeout = atoi(s_timeout);
+
+
+	if  (esl_connect_timeout(&handle, host, port, username, password, timeout) != ESL_SUCCESS) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to connect to remote ESL at %s:%d\n",
+				host, port);
+		goto end;
+	} else {
+		send = switch_mprintf("api %s", args);
+		if (esl_send_recv_timed(&handle, send, timeout) != ESL_SUCCESS) {
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Disconnected from remote ESL at %s:%d\n",
+					host, port);
+			goto end;
+		} else {
+			stream->write_function(stream, handle.last_sr_event->body);
+		}
+	}
+
+end:
+	esl_disconnect(&handle);
+	memset(&handle, 0, sizeof(handle));
+	switch_safe_free(send);
+	switch_safe_free(dup);
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+/* Macro expands to: switch_status_t mod_esl_load(switch_loadable_module_interface_t **module_interface, switch_memory_pool_t *pool) */
+SWITCH_MODULE_LOAD_FUNCTION(mod_esl_load)
+{
+	switch_api_interface_t *api_interface;
+
+	/* connect my internal structure to the blank pointer passed to me */
+	*module_interface = switch_loadable_module_create_module_interface(pool, modname);
+
+	SWITCH_ADD_API(api_interface, "single_esl", "Allow to do a single connection api call to a remote ESL server", single_esl_api_function, "[<user>]|<password> <host>[:<port>] <timeout> <remote api> <arguments>");
+
+	/* indicate that the module should continue to be loaded */
+	return SWITCH_STATUS_SUCCESS;
+}
+
+/*
+  Called when the system shuts down
+  Macro expands to: switch_status_t mod_esl_shutdown() */
+SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_esl_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
+ */