/* Copyright 2014 The Kubernetes Authors All rights reserved. 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 apiserver import ( "compress/gzip" "crypto/tls" "crypto/x509" "fmt" "io" "io/ioutil" "net" "net/http" "net/http/httptest" "net/url" "strings" "testing" "golang.org/x/net/websocket" "k8s.io/kubernetes/pkg/api/rest" ) func TestProxy(t *testing.T) { table := []struct { method string path string reqBody string respBody string respContentType string reqNamespace string }{ {"GET", "/some/dir", "", "answer", "text/css", "default"}, {"GET", "/some/dir", "", "answer", "text/html", "default"}, {"POST", "/some/other/dir", "question", "answer", "text/css", "default"}, {"PUT", "/some/dir/id", "different question", "answer", "text/css", "default"}, {"DELETE", "/some/dir/id", "", "ok", "text/css", "default"}, {"GET", "/some/dir/id", "", "answer", "text/css", "other"}, {"GET", "/trailing/slash/", "", "answer", "text/css", "default"}, {"GET", "/", "", "answer", "text/css", "default"}, } for _, item := range table { proxyServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { gotBody, err := ioutil.ReadAll(req.Body) if err != nil { t.Errorf("%v - unexpected error %v", item.method, err) } if e, a := item.reqBody, string(gotBody); e != a { t.Errorf("%v - expected %v, got %v", item.method, e, a) } if e, a := item.path, req.URL.Path; e != a { t.Errorf("%v - expected %v, got %v", item.method, e, a) } w.Header().Set("Content-Type", item.respContentType) var out io.Writer = w if strings.Contains(req.Header.Get("Accept-Encoding"), "gzip") { // The proxier can ask for gzip'd data; we need to provide it with that // in order to test our processing of that data. w.Header().Set("Content-Encoding", "gzip") gzw := gzip.NewWriter(w) out = gzw defer gzw.Close() } fmt.Fprint(out, item.respBody) })) defer proxyServer.Close() serverURL, _ := url.Parse(proxyServer.URL) simpleStorage := &SimpleRESTStorage{ errors: map[string]error{}, resourceLocation: serverURL, expectedResourceNamespace: item.reqNamespace, } namespaceHandler := handleNamespaced(map[string]rest.Storage{"foo": simpleStorage}) namespaceServer := httptest.NewServer(namespaceHandler) defer namespaceServer.Close() // test each supported URL pattern for finding the redirection resource in the proxy in a particular namespace serverPatterns := []struct { server *httptest.Server proxyTestPattern string }{ {namespaceServer, "/" + prefix + "/" + newGroupVersion.Group + "/" + newGroupVersion.Version + "/proxy/namespaces/" + item.reqNamespace + "/foo/id" + item.path}, } for _, serverPattern := range serverPatterns { server := serverPattern.server proxyTestPattern := serverPattern.proxyTestPattern req, err := http.NewRequest( item.method, server.URL+proxyTestPattern, strings.NewReader(item.reqBody), ) if err != nil { t.Errorf("%v - unexpected error %v", item.method, err) continue } resp, err := http.DefaultClient.Do(req) if err != nil { t.Errorf("%v - unexpected error %v", item.method, err) continue } gotResp, err := ioutil.ReadAll(resp.Body) if err != nil { t.Errorf("%v - unexpected error %v", item.method, err) } resp.Body.Close() if e, a := item.respBody, string(gotResp); e != a { t.Errorf("%v - expected %v, got %v. url: %#v", item.method, e, a, req.URL) } } } } func TestProxyUpgrade(t *testing.T) { localhostPool := x509.NewCertPool() if !localhostPool.AppendCertsFromPEM(localhostCert) { t.Errorf("error setting up localhostCert pool") } testcases := map[string]struct { ServerFunc func(http.Handler) *httptest.Server ProxyTransport http.RoundTripper }{ "http": { ServerFunc: httptest.NewServer, ProxyTransport: nil, }, "https (invalid hostname + InsecureSkipVerify)": { ServerFunc: func(h http.Handler) *httptest.Server { cert, err := tls.X509KeyPair(exampleCert, exampleKey) if err != nil { t.Errorf("https (invalid hostname): proxy_test: %v", err) } ts := httptest.NewUnstartedServer(h) ts.TLS = &tls.Config{ Certificates: []tls.Certificate{cert}, } ts.StartTLS() return ts }, ProxyTransport: &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: true}}, }, "https (valid hostname + RootCAs)": { ServerFunc: func(h http.Handler) *httptest.Server { cert, err := tls.X509KeyPair(localhostCert, localhostKey) if err != nil { t.Errorf("https (valid hostname): proxy_test: %v", err) } ts := httptest.NewUnstartedServer(h) ts.TLS = &tls.Config{ Certificates: []tls.Certificate{cert}, } ts.StartTLS() return ts }, ProxyTransport: &http.Transport{TLSClientConfig: &tls.Config{RootCAs: localhostPool}}, }, "https (valid hostname + RootCAs + custom dialer)": { ServerFunc: func(h http.Handler) *httptest.Server { cert, err := tls.X509KeyPair(localhostCert, localhostKey) if err != nil { t.Errorf("https (valid hostname): proxy_test: %v", err) } ts := httptest.NewUnstartedServer(h) ts.TLS = &tls.Config{ Certificates: []tls.Certificate{cert}, } ts.StartTLS() return ts }, ProxyTransport: &http.Transport{Dial: net.Dial, TLSClientConfig: &tls.Config{RootCAs: localhostPool}}, }, } for k, tc := range testcases { backendServer := tc.ServerFunc(websocket.Handler(func(ws *websocket.Conn) { defer ws.Close() body := make([]byte, 5) ws.Read(body) ws.Write([]byte("hello " + string(body))) })) defer backendServer.Close() serverURL, _ := url.Parse(backendServer.URL) simpleStorage := &SimpleRESTStorage{ errors: map[string]error{}, resourceLocation: serverURL, resourceLocationTransport: tc.ProxyTransport, expectedResourceNamespace: "myns", } namespaceHandler := handleNamespaced(map[string]rest.Storage{"foo": simpleStorage}) server := httptest.NewServer(namespaceHandler) defer server.Close() ws, err := websocket.Dial("ws://"+server.Listener.Addr().String()+"/"+prefix+"/"+newGroupVersion.Group+"/"+newGroupVersion.Version+"/proxy/namespaces/myns/foo/123", "", "http://127.0.0.1/") if err != nil { t.Errorf("%s: websocket dial err: %s", k, err) continue } defer ws.Close() if _, err := ws.Write([]byte("world")); err != nil { t.Errorf("%s: write err: %s", k, err) continue } response := make([]byte, 20) n, err := ws.Read(response) if err != nil { t.Errorf("%s: read err: %s", k, err) continue } if e, a := "hello world", string(response[0:n]); e != a { t.Errorf("%s: expected '%#v', got '%#v'", k, e, a) continue } } } func TestRedirectOnMissingTrailingSlash(t *testing.T) { table := []struct { // The requested path path string // The path requested on the proxy server. proxyServerPath string // query string query string }{ {"/trailing/slash/", "/trailing/slash/", ""}, {"/", "/", "test1=value1&test2=value2"}, // "/" should be added at the end. {"", "/", "test1=value1&test2=value2"}, // "/" should not be added at a non-root path. {"/some/path", "/some/path", ""}, } for _, item := range table { proxyServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { if req.URL.Path != item.proxyServerPath { t.Errorf("Unexpected request on path: %s, expected path: %s, item: %v", req.URL.Path, item.proxyServerPath, item) } if req.URL.RawQuery != item.query { t.Errorf("Unexpected query on url: %s, expected: %s", req.URL.RawQuery, item.query) } })) defer proxyServer.Close() serverURL, _ := url.Parse(proxyServer.URL) simpleStorage := &SimpleRESTStorage{ errors: map[string]error{}, resourceLocation: serverURL, expectedResourceNamespace: "ns", } handler := handleNamespaced(map[string]rest.Storage{"foo": simpleStorage}) server := httptest.NewServer(handler) defer server.Close() proxyTestPattern := "/" + prefix + "/" + newGroupVersion.Group + "/" + newGroupVersion.Version + "/proxy/namespaces/ns/foo/id" + item.path req, err := http.NewRequest( "GET", server.URL+proxyTestPattern+"?"+item.query, strings.NewReader(""), ) if err != nil { t.Errorf("unexpected error %v", err) continue } // Note: We are using a default client here, that follows redirects. resp, err := http.DefaultClient.Do(req) if err != nil { t.Errorf("unexpected error %v", err) continue } if resp.StatusCode != http.StatusOK { t.Errorf("Unexpected errorCode: %v, expected: 200. Response: %v, item: %v", resp.StatusCode, resp, item) } } } // exampleCert was generated from crypto/tls/generate_cert.go with the following command: // go run generate_cert.go --rsa-bits 512 --host example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h var exampleCert = []byte(`-----BEGIN CERTIFICATE----- MIIBcjCCAR6gAwIBAgIQBOUTYowZaENkZi0faI9DgTALBgkqhkiG9w0BAQswEjEQ MA4GA1UEChMHQWNtZSBDbzAgFw03MDAxMDEwMDAwMDBaGA8yMDg0MDEyOTE2MDAw MFowEjEQMA4GA1UEChMHQWNtZSBDbzBcMA0GCSqGSIb3DQEBAQUAA0sAMEgCQQCZ xfR3sgeHBraGFfF/24tTn4PRVAHOf2UOOxSQRs+aYjNqimFqf/SRIblQgeXdBJDR gVK5F1Js2zwlehw0bHxRAgMBAAGjUDBOMA4GA1UdDwEB/wQEAwIApDATBgNVHSUE DDAKBggrBgEFBQcDATAPBgNVHRMBAf8EBTADAQH/MBYGA1UdEQQPMA2CC2V4YW1w bGUuY29tMAsGCSqGSIb3DQEBCwNBAI/mfBB8dm33IpUl+acSyWfL6gX5Wc0FFyVj dKeesE1XBuPX1My/rzU6Oy/YwX7LOL4FaeNUS6bbL4axSLPKYSs= -----END CERTIFICATE-----`) var exampleKey = []byte(`-----BEGIN RSA PRIVATE KEY----- MIIBOgIBAAJBAJnF9HeyB4cGtoYV8X/bi1Ofg9FUAc5/ZQ47FJBGz5piM2qKYWp/ 9JEhuVCB5d0EkNGBUrkXUmzbPCV6HDRsfFECAwEAAQJBAJLH9yPuButniACTn5L5 IJQw1mWQt6zBw9eCo41YWkA0866EgjC53aPZaRjXMp0uNJGdIsys2V5rCOOLWN2C ODECIQDICHsi8QQQ9wpuJy8X5l8MAfxHL+DIqI84wQTeVM91FQIhAMTME8A18/7h 1Ad6drdnxAkuC0tX6Sx0LDozrmen+HFNAiAlcEDrt0RVkIcpOrg7tuhPLQf0oudl Zvb3Xlj069awSQIgcT15E/43w2+RASifzVNhQ2MCTr1sSA8lL+xzK+REmnUCIBhQ j4139pf8Re1J50zBxS/JlQfgDQi9sO9pYeiHIxNs -----END RSA PRIVATE KEY-----`) // localhostCert was generated from crypto/tls/generate_cert.go with the following command: // go run generate_cert.go --rsa-bits 512 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h var localhostCert = []byte(`-----BEGIN CERTIFICATE----- MIIBdzCCASOgAwIBAgIBADALBgkqhkiG9w0BAQUwEjEQMA4GA1UEChMHQWNtZSBD bzAeFw03MDAxMDEwMDAwMDBaFw00OTEyMzEyMzU5NTlaMBIxEDAOBgNVBAoTB0Fj bWUgQ28wWjALBgkqhkiG9w0BAQEDSwAwSAJBAN55NcYKZeInyTuhcCwFMhDHCmwa IUSdtXdcbItRB/yfXGBhiex00IaLXQnSU+QZPRZWYqeTEbFSgihqi1PUDy8CAwEA AaNoMGYwDgYDVR0PAQH/BAQDAgCkMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1Ud EwEB/wQFMAMBAf8wLgYDVR0RBCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAA AAAAAAAAAAAAAAEwCwYJKoZIhvcNAQEFA0EAAoQn/ytgqpiLcZu9XKbCJsJcvkgk Se6AbGXgSlq+ZCEVo0qIwSgeBqmsJxUu7NCSOwVJLYNEBO2DtIxoYVk+MA== -----END CERTIFICATE-----`) // localhostKey is the private key for localhostCert. var localhostKey = []byte(`-----BEGIN RSA PRIVATE KEY----- MIIBPAIBAAJBAN55NcYKZeInyTuhcCwFMhDHCmwaIUSdtXdcbItRB/yfXGBhiex0 0IaLXQnSU+QZPRZWYqeTEbFSgihqi1PUDy8CAwEAAQJBAQdUx66rfh8sYsgfdcvV NoafYpnEcB5s4m/vSVe6SU7dCK6eYec9f9wpT353ljhDUHq3EbmE4foNzJngh35d AekCIQDhRQG5Li0Wj8TM4obOnnXUXf1jRv0UkzE9AHWLG5q3AwIhAPzSjpYUDjVW MCUXgckTpKCuGwbJk7424Nb8bLzf3kllAiA5mUBgjfr/WtFSJdWcPQ4Zt9KTMNKD EUO0ukpTwEIl6wIhAMbGqZK3zAAFdq8DD2jPx+UJXnh0rnOkZBzDtJ6/iN69AiEA 1Aq8MJgTaYsDQWyU/hDq5YkDJc9e9DSCvUIzqxQWMQE= -----END RSA PRIVATE KEY-----`)