luci2: properly handle failed ubus calls in LuCI2.rpc to ensure that chained then...

diff --git a/luci2/htdocs/luci2/luci2.js b/luci2/htdocs/luci2/luci2.js
index 6c7db67..4e87218 100644 (file)
--- a/luci2/htdocs/luci2/luci2.js
+++ b/luci2/htdocs/luci2/luci2.js
@@ -505,43 +505,48 @@ function LuCI2()
                                data:        JSON.stringify(req),
                                dataType:    'json',
                                type:        'POST',
-                               timeout:     _luci2.globals.timeout
-                       }).then(cb);
+                               timeout:     _luci2.globals.timeout,
+                               _rpc_req:   req
+                       }).then(cb, cb);
                },
 
                _list_cb: function(msg)
                {
+                       var list = msg.result;
+
                        /* verify message frame */
-                       if (typeof(msg) != 'object' || msg.jsonrpc != '2.0' || !msg.id)
-                               throw 'Invalid JSON response';
+                       if (typeof(msg) != 'object' || msg.jsonrpc != '2.0' || !msg.id || !$.isArray(list))
+                               list = [ ];
 
-                       return msg.result;
+                       return $.Deferred().resolveWith(this, [ list ]);
                },
 
                _call_cb: function(msg)
                {
                        var data = [ ];
                        var type = Object.prototype.toString;
+                       var reqs = this._rpc_req;
 
-                       if (!$.isArray(msg))
+                       if (!$.isArray(reqs))
+                       {
                                msg = [ msg ];
+                               reqs = [ reqs ];
+                       }
 
                        for (var i = 0; i < msg.length; i++)
                        {
-                               /* verify message frame */
-                               if (typeof(msg[i]) != 'object' || msg[i].jsonrpc != '2.0' || !msg[i].id)
-                                       throw 'Invalid JSON response';
-
                                /* fetch related request info */
-                               var req = _luci2.rpc._requests[msg[i].id];
+                               var req = _luci2.rpc._requests[reqs[i].id];
                                if (typeof(req) != 'object')
                                        throw 'No related request for JSON response';
 
                                /* fetch response attribute and verify returned type */
                                var ret = undefined;
 
-                               if ($.isArray(msg[i].result) && msg[i].result[0] == 0)
-                                       ret = (msg[i].result.length > 1) ? msg[i].result[1] : msg[i].result[0];
+                               /* verify message frame */
+                               if (typeof(msg[i]) == 'object' && msg[i].jsonrpc == '2.0')
+                                       if ($.isArray(msg[i].result) && msg[i].result[0] == 0)
+                                               ret = (msg[i].result.length > 1) ? msg[i].result[1] : msg[i].result[0];
 
                                if (req.expect)
                                {
@@ -572,10 +577,10 @@ function LuCI2()
                                        data = ret;
 
                                /* delete request object */
-                               delete _luci2.rpc._requests[msg[i].id];
+                               delete _luci2.rpc._requests[reqs[i].id];
                        }
 
-                       return data;
+                       return $.Deferred().resolveWith(this, [ data ]);
                },
 
                list: function()