Finish implementing rig_get_conf2

https://github.com/Hamlib/Hamlib/issues/924

include/hamlib/rig.h

@@ -2105,6 +2105,7 @@ enum rig_function_e {
     RIG_FUNCTION_READ_FRAME_DIRECT,
     RIG_FUNCTION_IS_ASYNC_FRAME,
     RIG_FUNCTION_PROCESS_ASYNC_FRAME,
+    RIG_FUNCTION_GET_CONF2,
 };
 
 /**

src/conf.c

@@ -692,7 +692,7 @@ static int frontend_set_conf(RIG *rig, token_t token, const char *val)
  * frontend_get_conf
  * assumes rig!=NULL, val!=NULL
  */
-static int frontend_get_conf(RIG *rig, token_t token, char *val)
+static int frontend_get_conf2(RIG *rig, token_t token, char *val, int val_len)
 {
     struct rig_state *rs;
     const char *s = "";
@@ -1245,6 +1245,11 @@ int HAMLIB_API rig_set_conf(RIG *rig, token_t token, const char *val)
  * \sa rig_set_conf()
  */
 int HAMLIB_API rig_get_conf(RIG *rig, token_t token, char *val)
+{
+    return rig_get_conf2(rig, token, val, 128);
+}
+
+int HAMLIB_API rig_get_conf2(RIG *rig, token_t token, char *val, int val_len)
 {
     rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
 
@@ -1255,7 +1260,12 @@ int HAMLIB_API rig_get_conf(RIG *rig, token_t token, char *val)
 
     if (IS_TOKEN_FRONTEND(token))
     {
-        return frontend_get_conf(rig, token, val);
+        return frontend_get_conf2(rig, token, val, val_len);
+    }
+    
+    if (rig->caps->get_conf2)
+    {
+        return rig->caps->get_conf2(rig, token, val, val_len);
     }
 
     if (rig->caps->get_conf == NULL)

src/misc.c

@@ -2351,6 +2351,9 @@ void *HAMLIB_API rig_get_function_ptr(rig_model_t rig_model,
     case RIG_FUNCTION_GET_CONF:
         return caps->get_conf;
 
+    case RIG_FUNCTION_GET_CONF2:
+        return caps->get_conf2;
+
     case RIG_FUNCTION_SEND_DTMF:
         return caps->send_dtmf;