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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package msgprocessor
import (
"time"
"github.com/hyperledger/fabric-protos-go/common"
"github.com/hyperledger/fabric/common/channelconfig"
"github.com/hyperledger/fabric/common/crypto"
"github.com/hyperledger/fabric/protoutil"
"github.com/pkg/errors"
)
type resources interface {
// OrdererConfig returns the config.Orderer for the channel
// and whether the Orderer config exists
OrdererConfig() (channelconfig.Orderer, bool)
}
// NewExpirationRejectRule returns a rule that rejects messages signed by identities
// who's identities have expired, given the capability is active
func NewExpirationRejectRule(filterSupport resources) Rule {
return &expirationRejectRule{filterSupport: filterSupport}
}
type expirationRejectRule struct {
filterSupport resources
}
// Apply checks whether the identity that created the envelope has expired
func (exp *expirationRejectRule) Apply(message *common.Envelope) error {
ordererConf, ok := exp.filterSupport.OrdererConfig()
if !ok {
logger.Panic("Programming error: orderer config not found")
}
if !ordererConf.Capabilities().ExpirationCheck() {
return nil
}
signedData, err := protoutil.EnvelopeAsSignedData(message)
if err != nil {
return errors.Errorf("could not convert message to signedData: %s", err)
}
expirationTime := crypto.ExpiresAt(signedData[0].Identity)
// Identity cannot expire, or identity has not expired yet
if expirationTime.IsZero() || time.Now().Before(expirationTime) {
return nil
}
return errors.New("identity expired")
}
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