presence_reginfo: use parameter presence/default_expires instead of 3…

…600 constant

- GH #2996

src/modules/presence_reginfo/add_events.c

@@ -25,21 +25,31 @@
 #include <stdlib.h>
 #include <string.h>
 #include "../../core/parser/parse_content.h"
+#include "../../core/sr_module.h"
 #include "../presence/event_list.h"
 #include "presence_reginfo.h"
 
 int reginfo_add_events(void)
 {
 	pres_ev_t event;
 
+	/* read default expires from presence, if exists */
+	int pres_default_expires = 3600;
+	modparam_t type = 0;
+	int *param = find_param_export(find_module_by_name("presence"), "default_expires", INT_PARAM, &type);
+	if ( param && (type == INT_PARAM) ) 
+		pres_default_expires = *param;
+	else 
+		LOG(L_WARN, "cannot find pres_default_expires parameter or type is not correct in the presence module\n");
+
 	/* constructing message-summary event */
 	memset(&event, 0, sizeof(pres_ev_t));
 	event.name.s = "reg";
 	event.name.len = 3;
 
 	event.content_type.s = "application/reginfo+xml";
 	event.content_type.len = 23;
-	event.default_expires= 3600;
+	event.default_expires= pres_default_expires;
 	event.type = PUBL_TYPE;
 	event.req_auth = 0;
 	event.evs_publ_handl = 0;