/
authentication.go
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/
authentication.go
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// Copyright Istio Authors
//
// 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 model
import (
"time"
core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
tls "github.com/envoyproxy/go-control-plane/envoy/extensions/transport_sockets/tls/v3"
"google.golang.org/protobuf/types/known/durationpb"
)
const (
// SDSClusterName is the name of the cluster for SDS connections
SDSClusterName = "sds-grpc"
// SDSDefaultResourceName is the default name in sdsconfig, used for fetching normal key/cert.
SDSDefaultResourceName = "default"
// SDSRootResourceName is the sdsconfig name for root CA, used for fetching root cert.
SDSRootResourceName = "ROOTCA"
)
// Preconfigured SDS configs to avoid excessive memory allocations
var (
defaultSDSConfig = &tls.SdsSecretConfig{
Name: SDSDefaultResourceName,
SdsConfig: &core.ConfigSource{
ConfigSourceSpecifier: &core.ConfigSource_ApiConfigSource{
ApiConfigSource: &core.ApiConfigSource{
ApiType: core.ApiConfigSource_GRPC,
SetNodeOnFirstMessageOnly: true,
TransportApiVersion: core.ApiVersion_V3,
GrpcServices: []*core.GrpcService{
{
TargetSpecifier: &core.GrpcService_EnvoyGrpc_{
EnvoyGrpc: &core.GrpcService_EnvoyGrpc{ClusterName: SDSClusterName},
},
},
},
},
},
ResourceApiVersion: core.ApiVersion_V3,
InitialFetchTimeout: durationpb.New(time.Second * 0),
},
}
rootSDSConfig = &tls.SdsSecretConfig{
Name: SDSRootResourceName,
SdsConfig: &core.ConfigSource{
ConfigSourceSpecifier: &core.ConfigSource_ApiConfigSource{
ApiConfigSource: &core.ApiConfigSource{
ApiType: core.ApiConfigSource_GRPC,
SetNodeOnFirstMessageOnly: true,
TransportApiVersion: core.ApiVersion_V3,
GrpcServices: []*core.GrpcService{
{
TargetSpecifier: &core.GrpcService_EnvoyGrpc_{
EnvoyGrpc: &core.GrpcService_EnvoyGrpc{ClusterName: SDSClusterName},
},
},
},
},
},
ResourceApiVersion: core.ApiVersion_V3,
InitialFetchTimeout: durationpb.New(time.Second * 0),
},
}
)
// ConstructSdsSecretConfig constructs SDS Secret Configuration for workload proxy.
func ConstructSdsSecretConfig(name string) *tls.SdsSecretConfig {
if name == "" {
return nil
}
if name == SDSDefaultResourceName {
return defaultSDSConfig
}
if name == SDSRootResourceName {
return rootSDSConfig
}
cfg := &tls.SdsSecretConfig{
Name: name,
SdsConfig: &core.ConfigSource{
ConfigSourceSpecifier: &core.ConfigSource_ApiConfigSource{
ApiConfigSource: &core.ApiConfigSource{
SetNodeOnFirstMessageOnly: true,
ApiType: core.ApiConfigSource_GRPC,
TransportApiVersion: core.ApiVersion_V3,
GrpcServices: []*core.GrpcService{
{
TargetSpecifier: &core.GrpcService_EnvoyGrpc_{
EnvoyGrpc: &core.GrpcService_EnvoyGrpc{ClusterName: SDSClusterName},
},
},
},
},
},
ResourceApiVersion: core.ApiVersion_V3,
},
}
return cfg
}