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core: clarify delegation deletion flow

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Felix Lange 2024-12-02 14:29:16 +01:00 committed by lightclient
parent ace3a3f12c
commit 1110fc5fc6
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1 changed files with 11 additions and 9 deletions
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20
core/state_transition.go
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@ -553,6 +553,7 @@ func (st *stateTransition) validateAuthorization(auth *types.Authorization) (aut
code := st.state.GetCode(authority)
if _, ok := types.ParseDelegation(code); len(code) != 0 && !ok {
return authority, ErrAuthorizationDestinationHasCode
}
if have := st.state.GetNonce(authority); have != auth.Nonce {
return authority, ErrAuthorizationNonceMismatch
@ -575,21 +576,22 @@ func (st *stateTransition) applyAuthorization(msg *Message, auth *types.Authoriz
// Update nonce and account code.
st.state.SetNonce(authority, auth.Nonce+1)
delegation := types.AddressToDelegation(auth.Address)
if auth.Address == (common.Address{}) {
// If the delegation is for the zero address, completely clear all
// delegations from the account.
delegation = []byte{}
// Delegation to zero address means clear.
st.state.SetCode(authority, nil)
return nil
}
st.state.SetCode(authority, delegation)
// Usually the transaction destination and delegation target are added to
// the access list in statedb.Prepare(..), however if the delegation is in
// the same transaction we need add here as Prepare already happened.
// Otherwise install delegation to auth.Address.
st.state.SetCode(authority, types.AddressToDelegation(auth.Address))
// Usually the delegation target is added to the access list in statedb.Prepare(..).
// However if the destination address of the transaction is an EOA, and the EOA gains
// a new delegation in the same transaction, we need to explicitly add the delegation
// address here since Prepare has already happened.
if *msg.To == authority {
st.state.AddAddressToAccessList(auth.Address)
}
return nil
}