google: base account credentials with file-sourcing

Implements the core functionality to allow 3rd party identities access to Google APIs.  Specifically, this PR implements the base account credential type and supports file-sourced credentials such as Kubernetes workloads.  Later updates will add support for URL-sourced credentials such as Microsoft Azure and support for AWS credentials.

Change-Id: I6e09a450f5221a1e06394b51374cff70ab3ab8a7
GitHub-Last-Rev: 3ab51622f8
GitHub-Pull-Request: golang/oauth2#462
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/276312
Reviewed-by: Tyler Bui-Palsulich <tbp@google.com>
Trust: Tyler Bui-Palsulich <tbp@google.com>
Trust: Cody Oss <codyoss@google.com>
Run-TryBot: Tyler Bui-Palsulich <tbp@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This commit is contained in:
Patrick Jones
2021-01-12 19:45:47 +00:00
committed by Tyler Bui-Palsulich
parent 08078c50e5
commit 01de73cf58
7 changed files with 380 additions and 0 deletions

View File

@@ -15,6 +15,7 @@ import (
"cloud.google.com/go/compute/metadata"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google/internal/externalaccount"
"golang.org/x/oauth2/jwt"
)
@@ -93,6 +94,7 @@ func JWTConfigFromJSON(jsonKey []byte, scope ...string) (*jwt.Config, error) {
const (
serviceAccountKey = "service_account"
userCredentialsKey = "authorized_user"
externalAccountKey = "external_account"
)
// credentialsFile is the unmarshalled representation of a credentials file.
@@ -111,6 +113,16 @@ type credentialsFile struct {
ClientSecret string `json:"client_secret"`
ClientID string `json:"client_id"`
RefreshToken string `json:"refresh_token"`
// External Account fields
Audience string `json:"audience"`
SubjectTokenType string `json:"subject_token_type"`
TokenURLExternal string `json:"token_url"`
TokenInfoURL string `json:"token_info_url"`
ServiceAccountImpersonationURL string `json:"service_account_impersonation_url"`
CredentialSource externalaccount.CredentialSource `json:"credential_source"`
QuotaProjectID string `json:"quota_project_id"`
}
func (f *credentialsFile) jwtConfig(scopes []string) *jwt.Config {
@@ -141,6 +153,20 @@ func (f *credentialsFile) tokenSource(ctx context.Context, scopes []string) (oau
}
tok := &oauth2.Token{RefreshToken: f.RefreshToken}
return cfg.TokenSource(ctx, tok), nil
case externalAccountKey:
cfg := &externalaccount.Config{
Audience: f.Audience,
SubjectTokenType: f.SubjectTokenType,
TokenURL: f.TokenURLExternal,
TokenInfoURL: f.TokenInfoURL,
ServiceAccountImpersonationURL: f.ServiceAccountImpersonationURL,
ClientSecret: f.ClientSecret,
ClientID: f.ClientID,
CredentialSource: f.CredentialSource,
QuotaProjectID: f.QuotaProjectID,
Scopes: scopes,
}
return cfg.TokenSource(ctx), nil
case "":
return nil, errors.New("missing 'type' field in credentials")
default: