Add optional <variables> and <params> tag to <gateway> tag.

current gateways are:
<gateway>
 <param name="foo" value="bar"/>
</gateway>

now can also be:
<gateway>
 <params>
  <param name="foo" value="bar"/>
 </params>
</gateway>

now can also be:
<gateway>
 <params>
  <param name="foo" value="bar"/>
 </params>
 <variables>
  <variable name="myvar" val="myval"/>
 </variables>
</gateway>

any variables will be set on all outgoing channels using that gateway.




git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10103 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -2029,6 +2029,16 @@ static switch_call_cause_t sofia_outgoing_channel(switch_core_session_t *session
 		} else {
 			tech_pvt->invite_contact = switch_core_session_strdup(nsession, gateway_ptr->register_contact);
 		}
+
+		if (gateway_ptr->vars) {
+			switch_event_header_t *hp;
+			for(hp = gateway_ptr->vars->headers; hp; hp = hp->next) {
+				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s setting variable [%s]=[%s]\n",
+								  switch_channel_get_name(nchannel), hp->name, hp->value);
+				switch_channel_set_variable(nchannel, hp->name, hp->value);
+			}
+		}
+
 	} else {
 		if (!(dest = strchr(profile_name, '/'))) {
 			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Invalid URL\n");

src/mod/endpoints/mod_sofia/mod_sofia.h

@@ -297,6 +297,7 @@ struct sofia_gateway {
 	reg_state_t state;
 	switch_memory_pool_t *pool;
 	int deleted;
+	switch_event_t *vars;
 	struct sofia_gateway *next;
 };
 

src/mod/endpoints/mod_sofia/sofia_reg.c

@@ -93,6 +93,9 @@ void sofia_reg_check_gateway(sofia_profile_t *profile, time_t now)
 			switch_core_hash_delete(mod_sofia_globals.gateway_hash, gateway_ptr->register_from);
 			switch_core_hash_delete(mod_sofia_globals.gateway_hash, gateway_ptr->register_contact);
 			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Deleted gateway %s\n", gateway_ptr->name);
+			if (gateway_ptr->vars) {
+				switch_event_destroy(&gateway_ptr->vars);
+			}
 		} else {
 			last = gateway_ptr;
 		}