refine tenant api

Signed-off-by: hongming <talonwan@yunify.com>

pkg/utils/iputil/iputils.go

@@ -0,0 +1,48 @@
+/*
+
+ Copyright 2019 The KubeSphere Authors.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+*/
+package iputil
+
+import (
+	"net"
+	"net/http"
+)
+
+const (
+	XForwardedFor = "X-Forwarded-For"
+	XRealIP       = "X-Real-IP"
+	XClientIP     = "x-client-ip"
+)
+
+func RemoteIp(req *http.Request) string {
+	remoteAddr := req.RemoteAddr
+	if ip := req.Header.Get(XClientIP); ip != "" {
+		remoteAddr = ip
+	} else if ip := req.Header.Get(XRealIP); ip != "" {
+		remoteAddr = ip
+	} else if ip = req.Header.Get(XForwardedFor); ip != "" {
+		remoteAddr = ip
+	} else {
+		remoteAddr, _, _ = net.SplitHostPort(remoteAddr)
+	}
+
+	if remoteAddr == "::1" {
+		remoteAddr = "127.0.0.1"
+	}
+
+	return remoteAddr
+}