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97 lines
2.6 KiB
Go
97 lines
2.6 KiB
Go
// Source: https://github.com/distribution/distribution
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// Copyright 2014 https://github.com/distribution/distribution Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package requestutil
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import (
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"net/http"
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"net/http/httptest"
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"net/http/httputil"
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"net/url"
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"testing"
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)
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// SingleHostReverseProxy will insert an X-Forwarded-For header, and can be used to test
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// RemoteAddr(). A fake RemoteAddr cannot be set on the HTTP request - it is overwritten
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// at the transport layer to 127.0.0.1:<port> . However, as the X-Forwarded-For header
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// just contains the IP address, it is different enough for testing.
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func TestRemoteAddr(t *testing.T) {
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var expectedRemote string
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backend := httptest.NewServer(
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http.HandlerFunc(
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func(w http.ResponseWriter, r *http.Request) {
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defer r.Body.Close()
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if r.RemoteAddr == expectedRemote {
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t.Errorf("Unexpected matching remote addresses")
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}
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actualRemote := RemoteAddr(r)
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if expectedRemote != actualRemote {
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t.Errorf("Mismatching remote hosts: %v != %v", expectedRemote, actualRemote)
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}
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w.WriteHeader(http.StatusOK)
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},
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),
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)
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defer backend.Close()
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backendURL, err := url.Parse(backend.URL)
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if err != nil {
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t.Fatal(err)
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}
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proxy := httputil.NewSingleHostReverseProxy(backendURL)
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frontend := httptest.NewServer(proxy)
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defer frontend.Close()
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// X-Forwarded-For set by proxy
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expectedRemote = "127.0.0.1"
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proxyReq, err := http.NewRequest(http.MethodGet, frontend.URL, nil)
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if err != nil {
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t.Fatal(err)
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}
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resp, err := http.DefaultClient.Do(proxyReq)
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if err != nil {
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t.Fatal(err)
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}
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defer resp.Body.Close()
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// RemoteAddr in X-Real-Ip
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getReq, err := http.NewRequest(http.MethodGet, backend.URL, nil)
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if err != nil {
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t.Fatal(err)
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}
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expectedRemote = "1.2.3.4"
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getReq.Header["X-Real-ip"] = []string{expectedRemote}
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resp, err = http.DefaultClient.Do(getReq)
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if err != nil {
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t.Fatal(err)
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}
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defer resp.Body.Close()
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// Valid X-Real-Ip and invalid X-Forwarded-For
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getReq.Header["X-forwarded-for"] = []string{"1.2.3"}
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resp, err = http.DefaultClient.Do(getReq)
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if err != nil {
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t.Fatal(err)
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}
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defer resp.Body.Close()
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}
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