88 lines
3.2 KiB
Go
88 lines
3.2 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package gracefulexit
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import (
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"bytes"
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"context"
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"storj.io/common/identity"
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"storj.io/common/pb"
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"storj.io/common/signing"
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)
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func (endpoint *Endpoint) validatePendingTransfer(ctx context.Context, transfer *PendingTransfer) error {
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if transfer.SatelliteMessage == nil {
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return Error.New("Satellite message cannot be nil")
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}
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if transfer.SatelliteMessage.GetTransferPiece() == nil {
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return Error.New("Satellite message transfer piece cannot be nil")
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}
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if transfer.SatelliteMessage.GetTransferPiece().GetAddressedOrderLimit() == nil {
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return Error.New("Addressed order limit on transfer piece cannot be nil")
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}
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if transfer.SatelliteMessage.GetTransferPiece().GetAddressedOrderLimit().GetLimit() == nil {
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return Error.New("Addressed order limit on transfer piece cannot be nil")
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}
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if transfer.Path == nil {
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return Error.New("Transfer path cannot be nil")
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}
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if transfer.OriginalPointer == nil || transfer.OriginalPointer.GetRemote() == nil {
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return Error.New("could not get remote pointer from transfer item")
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}
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return nil
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}
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func (endpoint *Endpoint) verifyPieceTransferred(ctx context.Context, message *pb.StorageNodeMessage_Succeeded, transfer *PendingTransfer, receivingNodePeerID *identity.PeerIdentity) error {
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originalOrderLimit := message.Succeeded.GetOriginalOrderLimit()
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if originalOrderLimit == nil {
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return ErrInvalidArgument.New("Original order limit cannot be nil")
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}
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originalPieceHash := message.Succeeded.GetOriginalPieceHash()
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if originalPieceHash == nil {
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return ErrInvalidArgument.New("Original piece hash cannot be nil")
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}
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replacementPieceHash := message.Succeeded.GetReplacementPieceHash()
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if replacementPieceHash == nil {
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return ErrInvalidArgument.New("Replacement piece hash cannot be nil")
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}
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// verify that the original piece hash and replacement piece hash match
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if !bytes.Equal(originalPieceHash.Hash, replacementPieceHash.Hash) {
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return ErrInvalidArgument.New("Piece hashes for transferred piece don't match")
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}
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// verify that the satellite signed the original order limit
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err := signing.VerifyOrderLimitSignature(ctx, endpoint.signer, originalOrderLimit)
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if err != nil {
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return ErrInvalidArgument.Wrap(err)
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}
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// verify that the public key on the order limit signed the original piece hash
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err = signing.VerifyUplinkPieceHashSignature(ctx, originalOrderLimit.UplinkPublicKey, originalPieceHash)
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if err != nil {
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return ErrInvalidArgument.Wrap(err)
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}
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if originalOrderLimit.PieceId != message.Succeeded.OriginalPieceId {
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return ErrInvalidArgument.New("Invalid original piece ID")
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}
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receivingNodeID := transfer.SatelliteMessage.GetTransferPiece().GetAddressedOrderLimit().GetLimit().StorageNodeId
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calculatedNewPieceID := transfer.OriginalPointer.GetRemote().RootPieceId.Derive(receivingNodeID, transfer.PieceNum)
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if calculatedNewPieceID != replacementPieceHash.PieceId {
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return ErrInvalidArgument.New("Invalid replacement piece ID")
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}
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signee := signing.SigneeFromPeerIdentity(receivingNodePeerID)
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// verify that the new node signed the replacement piece hash
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err = signing.VerifyPieceHashSignature(ctx, signee, replacementPieceHash)
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if err != nil {
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return ErrInvalidArgument.Wrap(err)
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}
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return nil
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}
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