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// Copyright 2018 Google LLC 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 transport
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"net/http/httptest"
"net/url"
"strings"
"testing"
"github.com/google/go-containerregistry/pkg/authn"
"github.com/google/go-containerregistry/pkg/name"
)
var (
testReference, _ = name.NewTag("localhost:8080/user/image:latest", name.StrictValidation)
)
func TestTransportNoActionIfTransportIsAlreadyWrapper(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("WWW-Authenticate", `Bearer realm="http://foo.io"`)
http.Error(w, "Should not contact the server", http.StatusBadRequest)
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
wTprt := &Wrapper{inner: tprt}
if _, err := NewWithContext(context.Background(), testReference.Context().Registry, nil, wTprt, []string{testReference.Scope(PullScope)}); err != nil {
t.Errorf("NewWithContext unexpected error %s", err)
}
}
func TestTransportSelectionAnonymous(t *testing.T) {
// Record the requests we get in the inner transport.
cannedResponse := http.Response{
Status: http.StatusText(http.StatusOK),
StatusCode: http.StatusOK,
Body: io.NopCloser(strings.NewReader("")),
}
recorder := newRecorder(&cannedResponse, nil)
basic := &authn.Basic{Username: "foo", Password: "bar"}
reg := testReference.Context().Registry
tp, err := NewWithContext(context.Background(), reg, basic, recorder, []string{testReference.Scope(PullScope)})
if err != nil {
t.Errorf("NewWithContext() = %v", err)
}
req, err := http.NewRequest("GET", fmt.Sprintf("http://%s/v2/anything", reg), nil)
if err != nil {
t.Fatalf("Unexpected error during NewRequest: %v", err)
}
if _, err := tp.RoundTrip(req); err != nil {
t.Fatalf("Unexpected error during RoundTrip: %v", err)
}
if got, want := len(recorder.reqs), 2; got != want {
t.Fatalf("expected %d requests, got %d", want, got)
}
recorded := recorder.reqs[1]
if got, want := recorded.URL.Scheme, "https"; got != want {
t.Errorf("wrong scheme, want %s got %s", want, got)
}
}
func TestTransportSelectionBasic(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("WWW-Authenticate", `Basic`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
basic := &authn.Basic{Username: "foo", Password: "bar"}
tp, err := NewWithContext(context.Background(), testReference.Context().Registry, basic, tprt, []string{testReference.Scope(PullScope)})
if err != nil {
t.Errorf("NewWithContext() = %v", err)
}
if tpw, ok := tp.(*Wrapper); !ok {
t.Errorf("NewWithContext(); got %T, want *Wrapper", tp)
} else if _, ok := tpw.inner.(*basicTransport); !ok {
t.Errorf("NewWithContext(); got %T, want *basicTransport", tp)
}
}
type badAuth struct{}
func (a *badAuth) Authorization() (*authn.AuthConfig, error) {
return nil, errors.New("sorry dave, I'm afraid I can't let you do that")
}
func TestTransportBadAuth(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("WWW-Authenticate", `Bearer realm="http://foo.io"`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
if _, err := NewWithContext(context.Background(), testReference.Context().Registry, &badAuth{}, tprt, []string{testReference.Scope(PullScope)}); err == nil {
t.Errorf("NewWithContext() expected err, got nil")
}
}
func TestTransportSelectionBearer(t *testing.T) {
request := 0
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
request++
switch request {
case 1:
// This is an https request that fails, causing us to fall back to http.
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
case 2:
w.Header().Set("WWW-Authenticate", `Bearer realm="http://foo.io"`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
case 3:
hdr := r.Header.Get("Authorization")
if !strings.HasPrefix(hdr, "Basic ") {
t.Errorf("Header.Get(Authorization); got %v, want Basic prefix", hdr)
}
if got, want := r.FormValue("scope"), testReference.Scope(PullScope); got != want {
t.Errorf("FormValue(scope); got %v, want %v", got, want)
}
// Check that the service isn't set (we didn't specify it above)
// https://github.com/google/go-containerregistry/issues/1359
if got, want := r.FormValue("service"), ""; got != want {
t.Errorf("FormValue(service); got %q, want %q", got, want)
}
w.Write([]byte(`{"token": "dfskdjhfkhsjdhfkjhsdf"}`))
}
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
basic := &authn.Basic{Username: "foo", Password: "bar"}
tp, err := NewWithContext(context.Background(), testReference.Context().Registry, basic, tprt, []string{testReference.Scope(PullScope)})
if err != nil {
t.Errorf("NewWithContext() = %v", err)
}
if tpw, ok := tp.(*Wrapper); !ok {
t.Errorf("NewWithContext(); got %T, want *Wrapper", tp)
} else if _, ok := tpw.inner.(*bearerTransport); !ok {
t.Errorf("NewWithContext(); got %T, want *bearerTransport", tp)
}
}
func TestTransportSelectionBearerMissingRealm(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("WWW-Authenticate", `Bearer service="gcr.io"`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
basic := &authn.Basic{Username: "foo", Password: "bar"}
tp, err := NewWithContext(context.Background(), testReference.Context().Registry, basic, tprt, []string{testReference.Scope(PullScope)})
if err == nil || !strings.Contains(err.Error(), "missing realm") {
t.Errorf("NewWithContext() = %v, %v", tp, err)
}
}
func TestTransportSelectionBearerAuthError(t *testing.T) {
request := 0
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
request++
switch request {
case 1:
w.Header().Set("WWW-Authenticate", `Bearer realm="http://foo.io"`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
case 2:
http.Error(w, "Oops", http.StatusInternalServerError)
}
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
basic := &authn.Basic{Username: "foo", Password: "bar"}
tp, err := NewWithContext(context.Background(), testReference.Context().Registry, basic, tprt, []string{testReference.Scope(PullScope)})
if err == nil {
t.Errorf("NewWithContext() = %v", tp)
}
}
func TestTransportSelectionUnrecognizedChallenge(t *testing.T) {
server := httptest.NewServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("WWW-Authenticate", `Unrecognized`)
http.Error(w, "Unauthorized", http.StatusUnauthorized)
}))
defer server.Close()
tprt := &http.Transport{
Proxy: func(req *http.Request) (*url.URL, error) {
return url.Parse(server.URL)
},
}
basic := &authn.Basic{Username: "foo", Password: "bar"}
tp, err := NewWithContext(context.Background(), testReference.Context().Registry, basic, tprt, []string{testReference.Scope(PullScope)})
if err == nil || !strings.Contains(err.Error(), "challenge") {
t.Errorf("NewWithContext() = %v, %v", tp, err)
}
}
func TestTransportAlwaysTriesHttps(t *testing.T) {
// Use a NewTLSServer so that this speaks TLS even though it's localhost.
// This ensures that we try https even for local registries.
count := 0
server := httptest.NewTLSServer(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
count++
w.Write([]byte(`{"token": "dfskdjhfkhsjdhfkjhsdf"}`))
}))
defer server.Close()
u, err := url.Parse(server.URL)
if err != nil {
t.Errorf("Unexpected error during url.Parse: %v", err)
}
registry, err := name.NewRegistry(u.Host, name.WeakValidation)
if err != nil {
t.Errorf("Unexpected error during NewRegistry: %v", err)
}
basic := &authn.Basic{Username: "foo", Password: "bar"}
tp, err := NewWithContext(context.Background(), registry, basic, server.Client().Transport, []string{testReference.Scope(PullScope)})
if err != nil {
t.Fatalf("NewWithContext() = %v, %v", tp, err)
}
if count == 0 {
t.Errorf("failed to call TLS localhost server")
}
}
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