From 9626393ef8f39f7e8e8eddd49f28b280edf08ee7 Mon Sep 17 00:00:00 2001
From: Anthony Minessale <anthony.minessale@gmail.com>
Date: Fri, 16 Feb 2007 20:07:35 +0000
Subject: [PATCH] add export app (set + adding to export_vars) in 1

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4299 d0543943-73ff-0310-b7d9-9358b9ac24b2
---
 src/include/switch_types.h                    |  1 +
 .../applications/mod_dptools/mod_dptools.c    | 48 ++++++++++++++++++-
 src/switch_core.c                             |  2 +-
 3 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/src/include/switch_types.h b/src/include/switch_types.h
index b72faa317c..d3799cf719 100644
--- a/src/include/switch_types.h
+++ b/src/include/switch_types.h
@@ -76,6 +76,7 @@ SWITCH_BEGIN_EXTERN_C
 #define SWITCH_GRAMMAR_DIR SWITCH_PREFIX_DIR SWITCH_PATH_SEPARATOR "grammar"
 #endif
 
+#define SWITCH_EXPORT_VARS_VARIABLE "export_vars"
 #define SWITCH_R_SDP_VARIABLE "switch_r_sdp"
 #define SWITCH_L_SDP_VARIABLE "switch_l_sdp"
 #define SWITCH_B_SDP_VARIABLE "switch_m_sdp"
diff --git a/src/mod/applications/mod_dptools/mod_dptools.c b/src/mod/applications/mod_dptools/mod_dptools.c
index 0630963b4b..7b0d2e9faa 100644
--- a/src/mod/applications/mod_dptools/mod_dptools.c
+++ b/src/mod/applications/mod_dptools/mod_dptools.c
@@ -210,6 +210,43 @@ static void set_function(switch_core_session_t *session, char *data)
 	}
 }
 
+static void export_function(switch_core_session_t *session, char *data)
+{
+	switch_channel_t *channel;
+	char *exports, *new_exports = NULL, *new_exports_d = NULL, *var, *val = NULL;
+
+	channel = switch_core_session_get_channel(session);
+    assert(channel != NULL);
+
+	if (switch_strlen_zero(data)) {
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No variable name specified.\n");
+	} else {
+		exports = switch_channel_get_variable(channel, SWITCH_EXPORT_VARS_VARIABLE);
+		var = switch_core_session_strdup(session, data);
+		val = strchr(var, '=');
+
+		if (val) {
+			*val++ = '\0';
+            if (switch_strlen_zero(val)) {
+                val = NULL;
+            }
+		}
+		
+		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "EXPORT [%s]=[%s]\n", var, val ? val : "UNDEF");
+		switch_channel_set_variable(channel, var, val);
+
+		if (var && val) {
+			if (exports) {
+				new_exports_d = switch_mprintf("%s,%s", exports, var);
+				new_exports = new_exports_d;
+			} else {
+				new_exports = var;
+			}
+			switch_channel_set_variable(channel, SWITCH_EXPORT_VARS_VARIABLE, new_exports);
+			switch_safe_free(new_exports_d);
+		}
+	}
+}
 
 static void unset_function(switch_core_session_t *session, char *data)
 {
@@ -567,13 +604,22 @@ static const switch_application_interface_t set_application_interface = {
 	/*.next */ &unset_application_interface
 };
 
+static const switch_application_interface_t export_application_interface = {
+	/*.interface_name */ "export",
+	/*.application_function */ export_function,
+	/* long_desc */ "Set and export a channel varaible for the channel calling the application.",
+	/* short_desc */ "Export a channel varaible across a bridge",
+	/* syntax */ "<varname>=<value>",
+	/*.next */ &set_application_interface
+};
+
 static const switch_application_interface_t info_application_interface = {
 	/*.interface_name */ "info",
 	/*.application_function */ info_function,
 	/* long_desc */ "Display Call Info",
 	/* short_desc */ "Display Call Info",
 	/* syntax */ "",
-	/*.next */ &set_application_interface
+	/*.next */ &export_application_interface
 };
 
 static const switch_application_interface_t log_application_interface = {
diff --git a/src/switch_core.c b/src/switch_core.c
index 3b3c6b9976..d250ce18f4 100644
--- a/src/switch_core.c
+++ b/src/switch_core.c
@@ -1641,7 +1641,7 @@ SWITCH_DECLARE(switch_call_cause_t) switch_core_session_outgoing_channel(switch_
 			switch_channel_set_variable(peer_channel, SWITCH_ORIGINATOR_VARIABLE, switch_core_session_get_uuid(session));            
 
             /* A comma (,) separated list of variable names that should ne propagated from originator to originatee */
-			if ((export_vars = switch_channel_get_variable(channel, "export_vars"))) {
+			if ((export_vars = switch_channel_get_variable(channel, SWITCH_EXPORT_VARS_VARIABLE))) {
 				char *cptmp = switch_core_session_strdup(session, export_vars);
 				int argc;
 				char *argv[256];