add authorizing fileId write access

need to secure upload/update/delete for benchmark/filer/mount
need to add secure grpc

weed/server/volume_server_handlers.go

@@ -3,6 +3,8 @@ package weed_server
 import (
 	"net/http"
 
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/stats"
 )
 
@@ -45,3 +47,32 @@ func (vs *VolumeServer) publicReadOnlyHandler(w http.ResponseWriter, r *http.Req
 		vs.GetOrHeadHandler(w, r)
 	}
 }
+
+func (vs *VolumeServer) maybeCheckJwtAuthorization(r *http.Request, vid, fid string) bool {
+
+	if len(vs.guard.SigningKey) == 0 {
+		return true
+	}
+
+	tokenStr := security.GetJwt(r)
+	if tokenStr == "" {
+		glog.V(1).Infof("missing jwt from %s", r.RemoteAddr)
+		return false
+	}
+
+	token, err := security.DecodeJwt(vs.guard.SigningKey, tokenStr)
+	if err != nil {
+		glog.V(1).Infof("jwt verification error from %s: %v", r.RemoteAddr, err)
+		return false
+	}
+	if !token.Valid {
+		glog.V(1).Infof("jwt invalid from %s: %v", r.RemoteAddr, tokenStr)
+		return false
+	}
+
+	if sc, ok := token.Claims.(*security.SeaweedFileIdClaims); ok {
+		return sc.Fid == vid+","+fid
+	}
+	glog.V(1).Infof("unexpected jwt from %s: %v", r.RemoteAddr, tokenStr)
+	return false
+}