2021-05-19 12:18:07 +00:00
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package container
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import (
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2021-05-19 12:26:41 +00:00
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"crypto/elliptic"
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"crypto/sha256"
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"errors"
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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2021-05-19 12:18:07 +00:00
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"github.com/nspcc-dev/neofs-node/pkg/morph/event/container"
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"go.uber.org/zap"
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)
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func (cp *Processor) processSetEACL(e container.SetEACL) {
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if !cp.alphabetState.IsAlphabet() {
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cp.log.Info("non alphabet mode, ignore set EACL")
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return
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}
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err := cp.checkSetEACL(e)
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if err != nil {
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cp.log.Error("set EACL check failed",
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zap.String("error", err.Error()),
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)
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return
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}
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cp.approveSetEACL(e)
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}
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func (cp *Processor) checkSetEACL(e container.SetEACL) error {
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2021-05-19 12:26:41 +00:00
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// verify signature
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key, err := keys.NewPublicKeyFromBytes(e.PublicKey(), elliptic.P256())
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if err != nil {
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return fmt.Errorf("invalid key: %w", err)
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}
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table := e.Table()
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tableHash := sha256.Sum256(table)
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if !key.Verify(e.Signature(), tableHash[:]) {
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return errors.New("invalid signature")
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}
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// TODO: check key ownership
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2021-05-19 12:18:07 +00:00
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return nil
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}
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func (cp *Processor) approveSetEACL(e container.SetEACL) {
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err := cp.cnrClient.PutEACLBinary(e.Table(), e.PublicKey(), e.Signature())
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if err != nil {
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cp.log.Error("could not approve set EACL",
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zap.String("error", err.Error()),
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)
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}
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}
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