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fix(transport/grpc): separate options for creds and certs #1759

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merged 2 commits into from Nov 22, 2022
Merged

fix(transport/grpc): separate options for creds and certs #1759

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9726352
fix(transport/grpc): separate enforcement of WithoutAuthentication an…
noahdietz Nov 21, 2022
ad1d1c1
disallow NoAuth when insecure, refactor deprecated grpc option
noahdietz Nov 22, 2022
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31 changes: 18 additions & 13 deletions transport/grpc/dial.go
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Expand Up @@ -129,7 +129,15 @@ func dial(ctx context.Context, insecure bool, o *internal.DialSettings) (*grpc.C
var grpcOpts []grpc.DialOption
if insecure {
grpcOpts = []grpc.DialOption{grpc.WithInsecure()}
} else if !o.NoAuth {
} else {
tlsConfig := &tls.Config{
GetClientCertificate: clientCertSource,
}
grpcOpts = []grpc.DialOption{
grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
}
}
if !o.NoAuth {
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if o.APIKey != "" {
log.Print("API keys are not supported for gRPC APIs. Remove the WithAPIKey option from your client-creating call.")
}
Expand All @@ -142,8 +150,17 @@ func dial(ctx context.Context, insecure bool, o *internal.DialSettings) (*grpc.C
o.QuotaProject = internal.QuotaProjectFromCreds(creds)
}

grpcOpts = append(grpcOpts,
grpc.WithPerRPCCredentials(grpcTokenSource{
TokenSource: oauth.TokenSource{creds.TokenSource},
quotaProject: o.QuotaProject,
requestReason: o.RequestReason,
}),
)

// Attempt Direct Path:
if isDirectPathEnabled(endpoint, o) && isTokenSourceDirectPathCompatible(creds.TokenSource, o) && metadata.OnGCE() {
// Overwrite all of the previously specific DialOptions, DirectPath uses its own set of credentials and certificates.
grpcOpts = []grpc.DialOption{
grpc.WithCredentialsBundle(grpcgoogle.NewDefaultCredentialsWithOptions(grpcgoogle.DefaultCredentialsOptions{oauth.TokenSource{creds.TokenSource}}))}
if timeoutDialerOption != nil {
Expand All @@ -169,18 +186,6 @@ func dial(ctx context.Context, insecure bool, o *internal.DialSettings) (*grpc.C
grpc.WithDefaultServiceConfig(`{"loadBalancingConfig":[{"grpclb":{"childPolicy":[{"pick_first":{}}]}}]}`))
}
// TODO(cbro): add support for system parameters (quota project, request reason) via chained interceptor.
} else {
tlsConfig := &tls.Config{
GetClientCertificate: clientCertSource,
}
grpcOpts = []grpc.DialOption{
grpc.WithPerRPCCredentials(grpcTokenSource{
TokenSource: oauth.TokenSource{creds.TokenSource},
quotaProject: o.QuotaProject,
requestReason: o.RequestReason,
}),
grpc.WithTransportCredentials(credentials.NewTLS(tlsConfig)),
}
}
}

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