140 lines
4.3 KiB
Go
140 lines
4.3 KiB
Go
package genesis
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import (
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"context"
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"fmt"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/go-address"
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actorstypes "github.com/filecoin-project/go-state-types/actors"
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"github.com/filecoin-project/go-state-types/big"
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"github.com/filecoin-project/go-state-types/builtin"
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"github.com/filecoin-project/go-state-types/manifest"
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"github.com/filecoin-project/go-state-types/network"
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"github.com/filecoin-project/lotus/chain/actors"
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"github.com/filecoin-project/lotus/chain/actors/adt"
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init_ "github.com/filecoin-project/lotus/chain/actors/builtin/init"
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"github.com/filecoin-project/lotus/chain/state"
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"github.com/filecoin-project/lotus/chain/types"
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"github.com/filecoin-project/lotus/chain/types/ethtypes"
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"github.com/filecoin-project/lotus/chain/vm"
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)
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// EthNullAddresses are the Ethereum addresses we want to create zero-balanced EthAccounts in.
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// We may want to add null addresses for precompiles going forward.
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var EthNullAddresses = []string{
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"0x0000000000000000000000000000000000000000",
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}
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func SetupEAM(_ context.Context, nst *state.StateTree, nv network.Version) error {
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av, err := actorstypes.VersionForNetwork(nv)
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if err != nil {
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return fmt.Errorf("failed to get actors version for network version %d: %w", nv, err)
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}
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if av < actorstypes.Version10 {
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// Not defined before version 10; migration has to create.
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return nil
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}
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codecid, ok := actors.GetActorCodeID(av, manifest.EamKey)
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if !ok {
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return fmt.Errorf("failed to get CodeCID for EAM during genesis")
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}
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header := &types.Actor{
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Code: codecid,
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Head: vm.EmptyObjectCid,
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Balance: big.Zero(),
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Address: &builtin.EthereumAddressManagerActorAddr, // so that it can create ETH0
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}
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return nst.SetActor(builtin.EthereumAddressManagerActorAddr, header)
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}
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// MakeEthNullAddressActor creates a null address actor at the specified Ethereum address.
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func MakeEthNullAddressActor(av actorstypes.Version, addr address.Address) (*types.Actor, error) {
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actcid, ok := actors.GetActorCodeID(av, manifest.EthAccountKey)
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if !ok {
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return nil, xerrors.Errorf("failed to get EthAccount actor code ID for actors version %d", av)
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}
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act := &types.Actor{
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Code: actcid,
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Head: vm.EmptyObjectCid,
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Nonce: 0,
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Balance: big.Zero(),
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Address: &addr,
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}
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return act, nil
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}
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func SetupEthNullAddresses(ctx context.Context, st *state.StateTree, nv network.Version) ([]address.Address, error) {
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av, err := actorstypes.VersionForNetwork(nv)
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if err != nil {
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return nil, xerrors.Errorf("failed to resolve actors version for network version %d: %w", av, err)
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}
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if av < actorstypes.Version10 {
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// Not defined before version 10.
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return nil, nil
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}
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var ethAddresses []ethtypes.EthAddress
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for _, addr := range EthNullAddresses {
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a, err := ethtypes.ParseEthAddress(addr)
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if err != nil {
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return nil, xerrors.Errorf("failed to represent the 0x0 as an EthAddress: %w", err)
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}
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ethAddresses = append(ethAddresses, a)
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}
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initAct, err := st.GetActor(builtin.InitActorAddr)
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if err != nil {
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return nil, xerrors.Errorf("failed to load init actor: %w", err)
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}
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initState, err := init_.Load(adt.WrapStore(ctx, st.Store), initAct)
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if err != nil {
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return nil, xerrors.Errorf("failed to load init actor state: %w", err)
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}
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var ret []address.Address
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for _, ethAddr := range ethAddresses {
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// Place an EthAccount at the 0x0 Eth Null Address.
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f4Addr, err := ethAddr.ToFilecoinAddress()
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if err != nil {
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return nil, xerrors.Errorf("failed to compute Filecoin address for Eth addr 0x0: %w", err)
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}
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idAddr, err := initState.MapAddressToNewID(f4Addr)
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if err != nil {
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return nil, xerrors.Errorf("failed to map addr in init actor: %w", err)
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}
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actState, err := MakeEthNullAddressActor(av, f4Addr)
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if err != nil {
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return nil, xerrors.Errorf("failed to create EthAccount actor for null address: %w", err)
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}
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if err := st.SetActor(idAddr, actState); err != nil {
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return nil, xerrors.Errorf("failed to set Eth Null Address EthAccount actor state: %w", err)
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}
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ret = append(ret, idAddr)
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}
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initAct.Head, err = st.Store.Put(ctx, initState)
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if err != nil {
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return nil, xerrors.Errorf("failed to add init actor state to store: %w", err)
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}
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if err := st.SetActor(builtin.InitActorAddr, initAct); err != nil {
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return nil, xerrors.Errorf("failed to set updated state for init actor: %w", err)
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}
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return ret, nil
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}
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