pbx_config: Only the first [globals] section is seen.

If multiple [globals] sections are used (for example via separate
included files), only the first one is processed.  This can result in
lost global variables when using a modular extensions.conf.

ASTERISK-28146 #close

Change-Id: Iaac810c0a7c4d9b1bf8989fcc041cdb910ef08a0

CHANGES

@@ -23,6 +23,12 @@ chan_sip
 --- Functionality changes from Asterisk 16.0.0 to Asterisk 16.1.0 ------------
 ------------------------------------------------------------------------------
 
+pbx_config
+------------------
+ * pbx_config will now find and process multiple 'globals' sections from
+   extensions.conf.  Variables are processed in the order they are found
+   and duplicate variables overwrite the previous value.
+
 res_pjsip
 ------------------
  * New options 'trust_connected_line' and 'send_connected_line' have been

pbx/pbx_config.c

@@ -1714,10 +1714,20 @@ static int pbx_load_config(const char *config_file)
 
 	ast_copy_string(userscontext, ast_variable_retrieve(cfg, "general", "userscontext") ?: "default", sizeof(userscontext));
 
-	for (v = ast_variable_browse(cfg, "globals"); v; v = v->next) {
-		pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
-		pbx_builtin_setvar_helper(NULL, v->name, realvalue);
+	/* ast_variable_browse does not merge multiple [globals] sections */
+	for (cxt = ast_category_browse(cfg, NULL);
+	     cxt;
+	     cxt = ast_category_browse(cfg, cxt)) {
+		if (strcasecmp(cxt, "globals")) {
+			continue;
+		}
+
+		for (v = ast_variable_browse(cfg, cxt); v; v = v->next) {
+			pbx_substitute_variables_helper(NULL, v->value, realvalue, sizeof(realvalue) - 1);
+			pbx_builtin_setvar_helper(NULL, v->name, realvalue);
+		}
 	}
+
 	for (cxt = ast_category_browse(cfg, NULL);
 	     cxt;
 	     cxt = ast_category_browse(cfg, cxt)) {