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google: add utilities supporting upcoming oauth2 functionality 

These are used to support some extended utilities to help with STS requests.

Change-Id: Iafc145b06ca42374cfc2ac6572762a50bcf560f2
GitHub-Last-Rev: 3085fe5703
GitHub-Pull-Request: golang/oauth2#439
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/259777
Trust: Cody Oss <codyoss@google.com>
Run-TryBot: Cody Oss <codyoss@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tyler Bui-Palsulich <tbp@google.com>
This commit is contained in:
Patrick Jones 2020-11-03 00:39:58 +00:00 committed by Cody Oss
parent 5d25da1a8d
commit 9fd604954f
4 changed files with 191 additions and 0 deletions
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41
google/internal/externalaccount/clientauth.go Normal file
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package externalaccount
import (
"encoding/base64"
"golang.org/x/oauth2"
"net/http"
"net/url"
)
// ClientAuthentication represents an OAuth client ID and secret and the mechanism for passing these credentials as stated in rfc6749#2.3.1.
type ClientAuthentication struct {
// AuthStyle can be either basic or request-body
AuthStyle oauth2.AuthStyle
ClientID string
ClientSecret string
}
func (c *ClientAuthentication) InjectAuthentication(values url.Values, headers http.Header) {
if c.ClientID == "" || c.ClientSecret == "" || values == nil || headers == nil {
return
}
switch c.AuthStyle {
case oauth2.AuthStyleInHeader: // AuthStyleInHeader corresponds to basic authentication as defined in rfc7617#2
plainHeader := c.ClientID + ":" + c.ClientSecret
headers.Add("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(plainHeader)))
case oauth2.AuthStyleInParams: // AuthStyleInParams corresponds to request-body authentication with ClientID and ClientSecret in the message body.
values.Set("client_id", c.ClientID)
values.Set("client_secret", c.ClientSecret)
case oauth2.AuthStyleAutoDetect:
values.Set("client_id", c.ClientID)
values.Set("client_secret", c.ClientSecret)
default:
values.Set("client_id", c.ClientID)
values.Set("client_secret", c.ClientSecret)
}
}

113
google/internal/externalaccount/clientauth_test.go Normal file
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package externalaccount
import (
"golang.org/x/oauth2"
"net/http"
"net/url"
"reflect"
"testing"
)
var clientID = "rbrgnognrhongo3bi4gb9ghg9g"
var clientSecret = "notsosecret"
var audience = []string{"32555940559.apps.googleusercontent.com"}
var grantType = []string{"urn:ietf:params:oauth:grant-type:token-exchange"}
var requestedTokenType = []string{"urn:ietf:params:oauth:token-type:access_token"}
var subjectTokenType = []string{"urn:ietf:params:oauth:token-type:jwt"}
var subjectToken = []string{"eyJhbGciOiJSUzI1NiIsImtpZCI6IjJjNmZhNmY1OTUwYTdjZTQ2NWZjZjI0N2FhMGIwOTQ4MjhhYzk1MmMiLCJ0eXAiOiJKV1QifQ.eyJpc3MiOiJodHRwczovL2FjY291bnRzLmdvb2dsZS5jb20iLCJhenAiOiIzMjU1NTk0MDU1OS5hcHBzLmdvb2dsZXVzZXJjb250ZW50LmNvbSIsImF1ZCI6IjMyNTU1OTQwNTU5LmFwcHMuZ29vZ2xldXNlcmNvbnRlbnQuY29tIiwic3ViIjoiMTEzMzE4NTQxMDA5MDU3Mzc4MzI4IiwiaGQiOiJnb29nbGUuY29tIiwiZW1haWwiOiJpdGh1cmllbEBnb29nbGUuY29tIiwiZW1haWxfdmVyaWZpZWQiOnRydWUsImF0X2hhc2giOiI5OVJVYVFrRHJsVDFZOUV0SzdiYXJnIiwiaWF0IjoxNjAxNTgxMzQ5LCJleHAiOjE2MDE1ODQ5NDl9.SZ-4DyDcogDh_CDUKHqPCiT8AKLg4zLMpPhGQzmcmHQ6cJiV0WRVMf5Lq911qsvuekgxfQpIdKNXlD6yk3FqvC2rjBbuEztMF-OD_2B8CEIYFlMLGuTQimJlUQksLKM-3B2ITRDCxnyEdaZik0OVssiy1CBTsllS5MgTFqic7w8w0Cd6diqNkfPFZRWyRYsrRDRlHHbH5_TUnv2wnLVHBHlNvU4wU2yyjDIoqOvTRp8jtXdq7K31CDhXd47-hXsVFQn2ZgzuUEAkH2Q6NIXACcVyZOrjBcZiOQI9IRWz-g03LzbzPSecO7I8dDrhqUSqMrdNUz_f8Kr8JFhuVMfVug"}
var scope = []string{"https://www.googleapis.com/auth/devstorage.full_control"}
var ContentType = []string{"application/x-www-form-urlencoded"}
func TestClientAuthentication_InjectHeaderAuthentication(t *testing.T) {
valuesH := url.Values{
"audience": audience,
"grant_type": grantType,
"requested_token_type": requestedTokenType,
"subject_token_type": subjectTokenType,
"subject_token": subjectToken,
"scope": scope,
}
headerH := http.Header{
"Content-Type": ContentType,
}
headerAuthentication := ClientAuthentication{
AuthStyle: oauth2.AuthStyleInHeader,
ClientID: clientID,
ClientSecret: clientSecret,
}
headerAuthentication.InjectAuthentication(valuesH, headerH)
if got, want := valuesH["audience"], audience; !reflect.DeepEqual(got, want) {
t.Errorf("audience = %q, want %q", got, want)
}
if got, want := valuesH["grant_type"], grantType; !reflect.DeepEqual(got, want) {
t.Errorf("grant_type = %q, want %q", got, want)
}
if got, want := valuesH["requested_token_type"], requestedTokenType; !reflect.DeepEqual(got, want) {
t.Errorf("requested_token_type = %q, want %q", got, want)
}
if got, want := valuesH["subject_token_type"], subjectTokenType; !reflect.DeepEqual(got, want) {
t.Errorf("subject_token_type = %q, want %q", got, want)
}
if got, want := valuesH["subject_token"], subjectToken; !reflect.DeepEqual(got, want) {
t.Errorf("subject_token = %q, want %q", got, want)
}
if got, want := valuesH["scope"], scope; !reflect.DeepEqual(got, want) {
t.Errorf("scope = %q, want %q", got, want)
}
if got, want := headerH["Authorization"], []string{"Basic cmJyZ25vZ25yaG9uZ28zYmk0Z2I5Z2hnOWc6bm90c29zZWNyZXQ="}; !reflect.DeepEqual(got, want) {
t.Errorf("Authorization in header = %q, want %q", got, want)
}
}
func TestClientAuthentication_ParamsAuthentication(t *testing.T) {
valuesP := url.Values{
"audience": audience,
"grant_type": grantType,
"requested_token_type": requestedTokenType,
"subject_token_type": subjectTokenType,
"subject_token": subjectToken,
"scope": scope,
}
headerP := http.Header{
"Content-Type": ContentType,
}
paramsAuthentication := ClientAuthentication{
AuthStyle: oauth2.AuthStyleInParams,
ClientID: clientID,
ClientSecret: clientSecret,
}
paramsAuthentication.InjectAuthentication(valuesP, headerP)
if got, want := valuesP["audience"], audience; !reflect.DeepEqual(got, want) {
t.Errorf("audience = %q, want %q", got, want)
}
if got, want := valuesP["grant_type"], grantType; !reflect.DeepEqual(got, want) {
t.Errorf("grant_type = %q, want %q", got, want)
}
if got, want := valuesP["requested_token_type"], requestedTokenType; !reflect.DeepEqual(got, want) {
t.Errorf("requested_token_type = %q, want %q", got, want)
}
if got, want := valuesP["subject_token_type"], subjectTokenType; !reflect.DeepEqual(got, want) {
t.Errorf("subject_token_type = %q, want %q", got, want)
}
if got, want := valuesP["subject_token"], subjectToken; !reflect.DeepEqual(got, want) {
t.Errorf("subject_token = %q, want %q", got, want)
}
if got, want := valuesP["scope"], scope; !reflect.DeepEqual(got, want) {
t.Errorf("scope = %q, want %q", got, want)
}
if got, want := valuesP["client_id"], []string{clientID}; !reflect.DeepEqual(got, want) {
t.Errorf("client_id = %q, want %q", got, want)
}
if got, want := valuesP["client_secret"], []string{clientSecret}; !reflect.DeepEqual(got, want) {
t.Errorf("client_secret = %q, want %q", got, want)
}
}

18
google/internal/externalaccount/err.go Normal file
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package externalaccount
import "fmt"
// Error for handling OAuth related error responses as stated in rfc6749#5.2.
type Error struct {
Code string
URI string
Description string
}
func (err *Error) Error() string {
return fmt.Sprintf("got error code %s from %s: %s", err.Code, err.URI, err.Description)
}

19
google/internal/externalaccount/err_test.go Normal file
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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package externalaccount
import "testing"
func TestError(t *testing.T) {
e := Error{
"42",
"http:thisIsAPlaceholder",
"The Answer!",
}
want := "got error code 42 from http:thisIsAPlaceholder: The Answer!"
if got := e.Error(); got != want {
t.Errorf("Got error message %q; want %q", got, want)
}
}