add "log" application to print log messages From Mike Murdock.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3451 d0543943-73ff-0310-b7d9-9358b9ac24b2

AUTHORS

@@ -30,6 +30,8 @@ that much better:
  Ken Rice of Asteria Solutions Group, INC <ken AT asteriasgi.com> - xmlcdr, sofia improvements, load testing.
  Neal Horman <neal at wanlink dot com> - conference improvements, switch_ivr menu additions and other tweaks.
  Johny Kadarisman <jkr888 at gmail.com> - mod_python fixups.
+ Michael Murdock <mike at mmurdock dot org> - testing, documentation, bug finding and usability enhancements.
+
 
 A big THANK YOU goes to:
 

src/mod/applications/mod_dptools/mod_dptools.c

@@ -25,6 +25,7 @@
  * 
  * Anthony Minessale II <anthmct@yahoo.com>
  * Ken Rice, Asteria Solutions Group, Inc <ken@asteriasgi.com>
+ * Michael Murdock <mike at mmurdock dot org>
  *
  *
  * mod_dptools.c -- Raw Audio File Streaming Application Module
@@ -135,6 +136,17 @@ static void set_function(switch_core_session_t *session, char *data)
 	}
 }
 
+static void log_function(switch_core_session_t *session, char *data)
+{
+	switch_channel_t *channel;
+	channel = switch_core_session_get_channel(session);
+    assert(channel != NULL);
+
+	if (!switch_strlen_zero(data)) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "%s\n", data);
+	}
+}
+
 static void privacy_function(switch_core_session_t *session, char *data)
 {
 	switch_channel_t *channel;
@@ -315,13 +327,22 @@ static const switch_application_interface_t set_application_interface = {
 	/*.next */ &ringback_application_interface
 };
 
+static const switch_application_interface_t log_application_interface = {
+	/*.interface_name */ "log",
+	/*.application_function */ log_function,
+	/* long_desc */ "Logs a channel varaible for the channel calling the application.",
+	/* short_desc */ "Logs a channel varaible",
+	/* syntax */ "<varname>",
+	/*.next */ &set_application_interface
+};
+
 static const switch_application_interface_t answer_application_interface = {
 	/*.interface_name */ "answer",
 	/*.application_function */ answer_function,
 	/* long_desc */ "Answer the call for a channel.",
 	/* short_desc */ "Answer the call",
 	/* syntax */ "",
-	/*.next */ &set_application_interface
+	/*.next */ &log_application_interface
 
 };