mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-26 22:19:40 -08:00
413 lines
14 KiB
Go
413 lines
14 KiB
Go
// Copyright 2017 The Prometheus Authors
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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 httputil
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import (
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"crypto/tls"
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"crypto/x509"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"reflect"
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"strings"
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"testing"
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"github.com/prometheus/prometheus/config"
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"github.com/prometheus/prometheus/util/testutil"
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)
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const (
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TLSCAChainPath = "testdata/tls-ca-chain.pem"
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ServerCertificatePath = "testdata/server.crt"
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ServerKeyPath = "testdata/server.key"
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BarneyCertificatePath = "testdata/barney.crt"
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BarneyKeyNoPassPath = "testdata/barney-no-pass.key"
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MissingCA = "missing/ca.crt"
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MissingCert = "missing/cert.crt"
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MissingKey = "missing/secret.key"
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ExpectedMessage = "I'm here to serve you!!!"
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BearerToken = "theanswertothegreatquestionoflifetheuniverseandeverythingisfortytwo"
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BearerTokenFile = "testdata/bearer.token"
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MissingBearerTokenFile = "missing/bearer.token"
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ExpectedBearer = "Bearer " + BearerToken
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ExpectedUsername = "arthurdent"
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ExpectedPassword = "42"
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)
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func newTestServer(handler func(w http.ResponseWriter, r *http.Request)) (*httptest.Server, error) {
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testServer := httptest.NewUnstartedServer(http.HandlerFunc(handler))
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tlsCAChain, err := ioutil.ReadFile(TLSCAChainPath)
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if err != nil {
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return nil, fmt.Errorf("Can't read %s", TLSCAChainPath)
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}
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serverCertificate, err := tls.LoadX509KeyPair(ServerCertificatePath, ServerKeyPath)
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if err != nil {
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return nil, fmt.Errorf("Can't load X509 key pair %s - %s", ServerCertificatePath, ServerKeyPath)
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}
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rootCAs := x509.NewCertPool()
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rootCAs.AppendCertsFromPEM(tlsCAChain)
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testServer.TLS = &tls.Config{
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Certificates: make([]tls.Certificate, 1),
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RootCAs: rootCAs,
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ClientAuth: tls.RequireAndVerifyClientCert,
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ClientCAs: rootCAs}
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testServer.TLS.Certificates[0] = serverCertificate
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testServer.TLS.BuildNameToCertificate()
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testServer.StartTLS()
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return testServer, nil
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}
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func TestNewClientFromConfig(t *testing.T) {
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var newClientValidConfig = []struct {
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clientConfig config.HTTPClientConfig
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handler func(w http.ResponseWriter, r *http.Request)
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}{
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{
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clientConfig: config.HTTPClientConfig{
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TLSConfig: config.TLSConfig{
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CAFile: "",
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: true},
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},
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handler: func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprint(w, ExpectedMessage)
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},
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}, {
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clientConfig: config.HTTPClientConfig{
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TLSConfig: config.TLSConfig{
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CAFile: TLSCAChainPath,
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: false},
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},
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handler: func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprint(w, ExpectedMessage)
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},
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}, {
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clientConfig: config.HTTPClientConfig{
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BearerToken: BearerToken,
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TLSConfig: config.TLSConfig{
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CAFile: TLSCAChainPath,
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: false},
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},
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handler: func(w http.ResponseWriter, r *http.Request) {
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bearer := r.Header.Get("Authorization")
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if bearer != ExpectedBearer {
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fmt.Fprintf(w, "The expected Bearer Authorization (%s) differs from the obtained Bearer Authorization (%s)",
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ExpectedBearer, bearer)
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} else {
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fmt.Fprint(w, ExpectedMessage)
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}
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},
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}, {
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clientConfig: config.HTTPClientConfig{
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BearerTokenFile: BearerTokenFile,
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TLSConfig: config.TLSConfig{
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CAFile: TLSCAChainPath,
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: false},
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},
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handler: func(w http.ResponseWriter, r *http.Request) {
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bearer := r.Header.Get("Authorization")
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if bearer != ExpectedBearer {
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fmt.Fprintf(w, "The expected Bearer Authorization (%s) differs from the obtained Bearer Authorization (%s)",
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ExpectedBearer, bearer)
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} else {
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fmt.Fprint(w, ExpectedMessage)
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}
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},
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}, {
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clientConfig: config.HTTPClientConfig{
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BasicAuth: &config.BasicAuth{
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Username: ExpectedUsername,
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Password: ExpectedPassword,
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},
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TLSConfig: config.TLSConfig{
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CAFile: TLSCAChainPath,
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: false},
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},
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handler: func(w http.ResponseWriter, r *http.Request) {
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username, password, ok := r.BasicAuth()
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if ok == false {
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fmt.Fprintf(w, "The Authorization header wasn't set")
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} else if ExpectedUsername != username {
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fmt.Fprintf(w, "The expected username (%s) differs from the obtained username (%s).", ExpectedUsername, username)
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} else if ExpectedPassword != password {
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fmt.Fprintf(w, "The expected password (%s) differs from the obtained password (%s).", ExpectedPassword, password)
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} else {
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fmt.Fprint(w, ExpectedMessage)
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}
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},
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},
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}
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for _, validConfig := range newClientValidConfig {
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testServer, err := newTestServer(validConfig.handler)
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if err != nil {
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t.Fatal(err.Error())
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}
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defer testServer.Close()
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client, err := NewClientFromConfig(validConfig.clientConfig, "test")
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if err != nil {
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t.Errorf("Can't create a client from this config: %+v", validConfig.clientConfig)
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continue
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}
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response, err := client.Get(testServer.URL)
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if err != nil {
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t.Errorf("Can't connect to the test server using this config: %+v", validConfig.clientConfig)
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continue
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}
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message, err := ioutil.ReadAll(response.Body)
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response.Body.Close()
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if err != nil {
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t.Errorf("Can't read the server response body using this config: %+v", validConfig.clientConfig)
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continue
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}
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trimMessage := strings.TrimSpace(string(message))
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if ExpectedMessage != trimMessage {
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t.Errorf("The expected message (%s) differs from the obtained message (%s) using this config: %+v",
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ExpectedMessage, trimMessage, validConfig.clientConfig)
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}
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}
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}
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func TestNewClientFromInvalidConfig(t *testing.T) {
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var newClientInvalidConfig = []struct {
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clientConfig config.HTTPClientConfig
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errorMsg string
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}{
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{
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clientConfig: config.HTTPClientConfig{
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TLSConfig: config.TLSConfig{
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CAFile: MissingCA,
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CertFile: "",
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KeyFile: "",
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ServerName: "",
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InsecureSkipVerify: true},
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},
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errorMsg: fmt.Sprintf("unable to use specified CA cert %s:", MissingCA),
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}, {
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clientConfig: config.HTTPClientConfig{
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BearerTokenFile: MissingBearerTokenFile,
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TLSConfig: config.TLSConfig{
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CAFile: TLSCAChainPath,
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: false},
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},
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errorMsg: fmt.Sprintf("unable to read bearer token file %s:", MissingBearerTokenFile),
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},
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}
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for _, invalidConfig := range newClientInvalidConfig {
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client, err := NewClientFromConfig(invalidConfig.clientConfig, "test")
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if client != nil {
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t.Errorf("A client instance was returned instead of nil using this config: %+v", invalidConfig.clientConfig)
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}
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if err == nil {
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t.Errorf("No error was returned using this config: %+v", invalidConfig.clientConfig)
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}
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if !strings.Contains(err.Error(), invalidConfig.errorMsg) {
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t.Errorf("Expected error %s does not contain %s", err.Error(), invalidConfig.errorMsg)
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}
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}
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}
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func TestBearerAuthRoundTripper(t *testing.T) {
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const (
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newBearerToken = "goodbyeandthankyouforthefish"
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)
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fakeRoundTripper := testutil.NewRoundTripCheckRequest(func(req *http.Request) {
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bearer := req.Header.Get("Authorization")
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if bearer != ExpectedBearer {
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t.Errorf("The expected Bearer Authorization (%s) differs from the obtained Bearer Authorization (%s)",
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ExpectedBearer, bearer)
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}
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}, nil, nil)
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//Normal flow
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bearerAuthRoundTripper := NewBearerAuthRoundTripper(BearerToken, fakeRoundTripper)
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request, _ := http.NewRequest("GET", "/hitchhiker", nil)
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request.Header.Set("User-Agent", "Douglas Adams mind")
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bearerAuthRoundTripper.RoundTrip(request)
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//Should honor already Authorization header set
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bearerAuthRoundTripperShouldNotModifyExistingAuthorization := NewBearerAuthRoundTripper(newBearerToken, fakeRoundTripper)
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request, _ = http.NewRequest("GET", "/hitchhiker", nil)
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request.Header.Set("Authorization", ExpectedBearer)
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bearerAuthRoundTripperShouldNotModifyExistingAuthorization.RoundTrip(request)
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}
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func TestBasicAuthRoundTripper(t *testing.T) {
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const (
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newUsername = "fordprefect"
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newPassword = "towel"
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)
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fakeRoundTripper := testutil.NewRoundTripCheckRequest(func(req *http.Request) {
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username, password, ok := req.BasicAuth()
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if ok == false {
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t.Errorf("The Authorization header wasn't set")
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}
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if ExpectedUsername != username {
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t.Errorf("The expected username (%s) differs from the obtained username (%s).", ExpectedUsername, username)
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}
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if ExpectedPassword != password {
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t.Errorf("The expected password (%s) differs from the obtained password (%s).", ExpectedPassword, password)
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}
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}, nil, nil)
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//Normal flow
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basicAuthRoundTripper := NewBasicAuthRoundTripper(ExpectedUsername,
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ExpectedPassword, fakeRoundTripper)
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request, _ := http.NewRequest("GET", "/hitchhiker", nil)
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request.Header.Set("User-Agent", "Douglas Adams mind")
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basicAuthRoundTripper.RoundTrip(request)
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//Should honor already Authorization header set
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basicAuthRoundTripperShouldNotModifyExistingAuthorization := NewBasicAuthRoundTripper(newUsername,
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newPassword, fakeRoundTripper)
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request, _ = http.NewRequest("GET", "/hitchhiker", nil)
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request.SetBasicAuth(ExpectedUsername, ExpectedPassword)
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basicAuthRoundTripperShouldNotModifyExistingAuthorization.RoundTrip(request)
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}
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func TestTLSConfig(t *testing.T) {
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configTLSConfig := config.TLSConfig{
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CAFile: TLSCAChainPath,
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CertFile: BarneyCertificatePath,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "localhost",
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InsecureSkipVerify: false}
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tlsCAChain, err := ioutil.ReadFile(TLSCAChainPath)
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if err != nil {
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t.Fatalf("Can't read the CA certificate chain (%s)",
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TLSCAChainPath)
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}
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rootCAs := x509.NewCertPool()
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rootCAs.AppendCertsFromPEM(tlsCAChain)
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barneyCertificate, err := tls.LoadX509KeyPair(BarneyCertificatePath, BarneyKeyNoPassPath)
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if err != nil {
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t.Fatalf("Can't load the client key pair ('%s' and '%s'). Reason: %s",
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BarneyCertificatePath, BarneyKeyNoPassPath, err)
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}
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expectedTLSConfig := &tls.Config{
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RootCAs: rootCAs,
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Certificates: []tls.Certificate{barneyCertificate},
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ServerName: configTLSConfig.ServerName,
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InsecureSkipVerify: configTLSConfig.InsecureSkipVerify}
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expectedTLSConfig.BuildNameToCertificate()
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tlsConfig, err := NewTLSConfig(configTLSConfig)
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if err != nil {
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t.Fatalf("Can't create a new TLS Config from a configuration (%s).", err)
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}
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if !reflect.DeepEqual(tlsConfig, expectedTLSConfig) {
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t.Fatalf("Unexpected TLS Config result: \n\n%+v\n expected\n\n%+v", tlsConfig, expectedTLSConfig)
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}
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}
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func TestTLSConfigEmpty(t *testing.T) {
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configTLSConfig := config.TLSConfig{
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CAFile: "",
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CertFile: "",
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KeyFile: "",
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ServerName: "",
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InsecureSkipVerify: true}
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expectedTLSConfig := &tls.Config{
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InsecureSkipVerify: configTLSConfig.InsecureSkipVerify}
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expectedTLSConfig.BuildNameToCertificate()
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tlsConfig, err := NewTLSConfig(configTLSConfig)
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if err != nil {
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t.Fatalf("Can't create a new TLS Config from a configuration (%s).", err)
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}
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if !reflect.DeepEqual(tlsConfig, expectedTLSConfig) {
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t.Fatalf("Unexpected TLS Config result: \n\n%+v\n expected\n\n%+v", tlsConfig, expectedTLSConfig)
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}
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}
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func TestTLSConfigInvalidCA(t *testing.T) {
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var invalidTLSConfig = []struct {
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configTLSConfig config.TLSConfig
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errorMessage string
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}{
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{
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configTLSConfig: config.TLSConfig{
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CAFile: MissingCA,
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CertFile: "",
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KeyFile: "",
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ServerName: "",
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InsecureSkipVerify: false},
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errorMessage: fmt.Sprintf("unable to use specified CA cert %s:", MissingCA),
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}, {
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configTLSConfig: config.TLSConfig{
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CAFile: "",
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CertFile: MissingCert,
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KeyFile: BarneyKeyNoPassPath,
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ServerName: "",
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InsecureSkipVerify: false},
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errorMessage: fmt.Sprintf("unable to use specified client cert (%s) & key (%s):", MissingCert, BarneyKeyNoPassPath),
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}, {
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configTLSConfig: config.TLSConfig{
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CAFile: "",
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CertFile: BarneyCertificatePath,
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KeyFile: MissingKey,
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ServerName: "",
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InsecureSkipVerify: false},
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errorMessage: fmt.Sprintf("unable to use specified client cert (%s) & key (%s):", BarneyCertificatePath, MissingKey),
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},
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}
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for _, anInvalididTLSConfig := range invalidTLSConfig {
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tlsConfig, err := NewTLSConfig(anInvalididTLSConfig.configTLSConfig)
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if tlsConfig != nil && err == nil {
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t.Errorf("The TLS Config could be created even with this %+v", anInvalididTLSConfig.configTLSConfig)
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continue
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}
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if !strings.Contains(err.Error(), anInvalididTLSConfig.errorMessage) {
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t.Errorf("The expected error should contain %s, but got %s", anInvalididTLSConfig.errorMessage, err)
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}
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}
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}
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