pomerium/authorize/state.go
2020-10-09 11:08:40 -06:00

82 lines
2.3 KiB
Go

package authorize
import (
"encoding/base64"
"fmt"
"sync/atomic"
"github.com/pomerium/pomerium/authorize/evaluator"
"github.com/pomerium/pomerium/config"
"github.com/pomerium/pomerium/internal/encoding"
"github.com/pomerium/pomerium/internal/encoding/jws"
"github.com/pomerium/pomerium/pkg/grpc"
"github.com/pomerium/pomerium/pkg/grpc/databroker"
)
type authorizeState struct {
evaluator *evaluator.Evaluator
encoder encoding.MarshalUnmarshaler
dataBrokerClient databroker.DataBrokerServiceClient
}
func newAuthorizeStateFromConfig(cfg *config.Config, store *evaluator.Store) (*authorizeState, error) {
if err := validateOptions(cfg.Options); err != nil {
return nil, fmt.Errorf("authorize: bad options: %w", err)
}
state := new(authorizeState)
var err error
state.evaluator, err = newPolicyEvaluator(cfg.Options, store)
if err != nil {
return nil, fmt.Errorf("authorize: failed to update policy with options: %w", err)
}
var host string
if cfg.Options.AuthenticateURL != nil {
host = cfg.Options.AuthenticateURL.Host
}
state.encoder, err = jws.NewHS256Signer([]byte(cfg.Options.SharedKey), host)
if err != nil {
return nil, err
}
sharedKey, _ := base64.StdEncoding.DecodeString(cfg.Options.SharedKey)
cc, err := grpc.GetGRPCClientConn("databroker", &grpc.Options{
Addr: cfg.Options.DataBrokerURL,
OverrideCertificateName: cfg.Options.OverrideCertificateName,
CA: cfg.Options.CA,
CAFile: cfg.Options.CAFile,
RequestTimeout: cfg.Options.GRPCClientTimeout,
ClientDNSRoundRobin: cfg.Options.GRPCClientDNSRoundRobin,
WithInsecure: cfg.Options.GRPCInsecure,
ServiceName: cfg.Options.Services,
SignedJWTKey: sharedKey,
})
if err != nil {
return nil, fmt.Errorf("authorize: error creating databroker connection: %w", err)
}
state.dataBrokerClient = databroker.NewDataBrokerServiceClient(cc)
return state, nil
}
type atomicAuthorizeState struct {
value atomic.Value
}
func newAtomicAuthorizeState(state *authorizeState) *atomicAuthorizeState {
aas := new(atomicAuthorizeState)
aas.Store(state)
return aas
}
func (aas *atomicAuthorizeState) Load() *authorizeState {
return aas.value.Load().(*authorizeState)
}
func (aas *atomicAuthorizeState) Store(state *authorizeState) {
aas.value.Store(state)
}