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add a network version gate to IsValidForSending.

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This commit is contained in:
Raúl Kripalani 2023-01-10 18:24:52 +00:00 committed by raulk
parent c73a0b5265
commit ac38c9776c
2 changed files with 27 additions and 3 deletions
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24
chain/consensus/filcns/filecoin.go
View File

@ -436,15 +436,35 @@ func (filec *FilecoinEC) VerifyWinningPoStProof(ctx context.Context, nv network.
return nil
}
func IsValidForSending(act *types.Actor) bool {
func IsValidForSending(nv network.Version, act *types.Actor) bool {
// Before nv18 (Hygge), we only supported built-in account actors as senders.
//
// Note: this gate is probably superfluous, since:
// 1. Placeholder actors cannot be created before nv18.
// 2. EthAccount actors cannot be created before nv18.
// 3. Delegated addresses cannot be created before nv18.
//
// But it's a safeguard.
//
// Note 2: ad-hoc checks for network versions like this across the codebase
// will be problematic with networks with diverging version lineages
// (e.g. Hyperspace). We need to revisit this strategy entirely.
if nv < network.Version18 {
return builtin.IsAccountActor(act.Code)
}
// After nv18, we also support other kinds of senders.
if builtin.IsAccountActor(act.Code) || builtin.IsEthAccountActor(act.Code) {
return true
}
// Allow placeholder actors with a delegated address and nonce 0 to send a message.
// These will be converted to an EthAccount actor on first send.
if !builtin.IsPlaceholderActor(act.Code) || act.Nonce != 0 || act.Address == nil || act.Address.Protocol() != address.Delegated {
return false
}
// Only allow such actors to send if their delegated address is in the EAM's namespace.
id, _, err := varint.FromUvarint(act.Address.Payload())
return err == nil && id == builtintypes.EthereumAddressManagerActorID
}
@ -521,7 +541,7 @@ func (filec *FilecoinEC) checkBlockMessages(ctx context.Context, b *types.FullBl
return xerrors.Errorf("failed to get actor: %w", err)
}
if !IsValidForSending(act) {
if !IsValidForSending(nv, act) {
return xerrors.New("Sender must be an account actor")
}
nonces[sender] = act.Nonce

6
chain/messagepool/messagepool.go
View File

@ -870,8 +870,12 @@ func (mp *MessagePool) addTs(ctx context.Context, m *types.SignedMessage, curTs
return false, xerrors.Errorf("failed to get sender actor: %w", err)
}
// This message can only be included in the _next_ epoch and beyond, hence the +1.
epoch := curTs.Height() + 1
nv := mp.api.StateNetworkVersion(ctx, epoch)
// TODO: I'm not thrilled about depending on filcns here, but I prefer this to duplicating logic
if !filcns.IsValidForSending(senderAct) {
if !filcns.IsValidForSending(nv, senderAct) {
return false, xerrors.Errorf("sender actor %s is not a valid top-level sender", m.Message.From)
}