PLT-3412 WebRTC Server side & System Console (#3706)

* WebRTC Server side

* WebRTC System Console

* Consistency on variable names

* Add turn and stun uri validation

api/webrtc.go

@@ -0,0 +1,51 @@
+// Copyright (c) 2016 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package api
+
+import (
+	l4g "github.com/alecthomas/log4go"
+	"github.com/mattermost/platform/einterfaces"
+	"github.com/mattermost/platform/model"
+	"github.com/mattermost/platform/utils"
+	"net/http"
+)
+
+func InitWebrtc() {
+	l4g.Debug(utils.T("api.webrtc.init.debug"))
+
+	BaseRoutes.Webrtc.Handle("/token", ApiUserRequired(webrtcToken)).Methods("POST")
+
+	BaseRoutes.WebSocket.Handle("webrtc", ApiWebSocketHandler(webrtcMessage))
+}
+
+func webrtcToken(c *Context, w http.ResponseWriter, r *http.Request) {
+	webrtcInterface := einterfaces.GetWebrtcInterface()
+
+	if webrtcInterface == nil {
+		c.Err = model.NewLocAppError("webrtcToken", "api.webrtc.not_available.app_error", nil, "")
+		c.Err.StatusCode = http.StatusNotImplemented
+		return
+	}
+
+	if result, err := webrtcInterface.Token(c.Session.Id); err != nil {
+		c.Err = err
+		return
+	} else {
+		w.Write([]byte(model.MapToJson(result)))
+	}
+}
+
+func webrtcMessage(req *model.WebSocketRequest) (map[string]interface{}, *model.AppError) {
+	var ok bool
+	var toUserId string
+	if toUserId, ok = req.Data["to_user_id"].(string); !ok || len(toUserId) != 26 {
+		return nil, NewInvalidWebSocketParamError(req.Action, "to_user_id")
+	}
+
+	event := model.NewWebSocketEvent("", "", toUserId, model.WEBSOCKET_EVENT_WEBRTC)
+	event.Data = req.Data
+	go Publish(event)
+
+	return nil, nil
+}