116 lines
3.2 KiB
Go
116 lines
3.2 KiB
Go
package evm
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import (
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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sdk "github.com/cosmos/cosmos-sdk/types"
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authutils "github.com/cosmos/cosmos-sdk/x/auth/client/utils"
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emint "github.com/cosmos/ethermint/types"
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"github.com/cosmos/ethermint/x/evm/types"
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tm "github.com/tendermint/tendermint/types"
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)
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// NewHandler returns a handler for Ethermint type messages.
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func NewHandler(keeper Keeper) sdk.Handler {
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return func(ctx sdk.Context, msg sdk.Msg) sdk.Result {
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switch msg := msg.(type) {
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case types.EthereumTxMsg:
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return handleETHTxMsg(ctx, keeper, msg)
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case *types.EmintMsg:
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return handleEmintMsg(ctx, keeper, *msg)
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default:
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errMsg := fmt.Sprintf("Unrecognized ethermint Msg type: %v", msg.Type())
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return sdk.ErrUnknownRequest(errMsg).Result()
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}
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}
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}
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// Handle an Ethereum specific tx
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func handleETHTxMsg(ctx sdk.Context, keeper Keeper, msg types.EthereumTxMsg) sdk.Result {
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if err := msg.ValidateBasic(); err != nil {
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return err.Result()
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}
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// parse the chainID from a string to a base-10 integer
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intChainID, ok := new(big.Int).SetString(ctx.ChainID(), 10)
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if !ok {
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return emint.ErrInvalidChainID(fmt.Sprintf("invalid chainID: %s", ctx.ChainID())).Result()
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}
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// Verify signature and retrieve sender address
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sender, err := msg.VerifySig(intChainID)
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if err != nil {
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return emint.ErrInvalidSender(err.Error()).Result()
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}
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// Encode transaction by default Tx encoder
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txEncoder := authutils.GetTxEncoder(types.ModuleCdc)
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txBytes, err := txEncoder(msg)
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if err != nil {
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return sdk.ErrInternal(err.Error()).Result()
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}
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txHash := tm.Tx(txBytes).Hash()
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ethHash := common.BytesToHash(txHash)
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st := types.StateTransition{
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Sender: sender,
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AccountNonce: msg.Data.AccountNonce,
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Price: msg.Data.Price,
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GasLimit: msg.Data.GasLimit,
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Recipient: msg.Data.Recipient,
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Amount: msg.Data.Amount,
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Payload: msg.Data.Payload,
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Csdb: keeper.csdb.WithContext(ctx),
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ChainID: intChainID,
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THash: ðHash,
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Simulate: ctx.IsCheckTx(),
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}
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// Prepare db for logs
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keeper.csdb.Prepare(ethHash, common.Hash{}, keeper.txCount.get())
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keeper.txCount.increment()
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bloom, res := st.TransitionCSDB(ctx)
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keeper.bloom.Or(keeper.bloom, bloom)
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return res
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}
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func handleEmintMsg(ctx sdk.Context, keeper Keeper, msg types.EmintMsg) sdk.Result {
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if err := msg.ValidateBasic(); err != nil {
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return err.Result()
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}
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// parse the chainID from a string to a base-10 integer
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intChainID, ok := new(big.Int).SetString(ctx.ChainID(), 10)
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if !ok {
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return emint.ErrInvalidChainID(fmt.Sprintf("invalid chainID: %s", ctx.ChainID())).Result()
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}
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st := types.StateTransition{
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Sender: common.BytesToAddress(msg.From.Bytes()),
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AccountNonce: msg.AccountNonce,
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Price: msg.Price.BigInt(),
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GasLimit: msg.GasLimit,
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Amount: msg.Amount.BigInt(),
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Payload: msg.Payload,
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Csdb: keeper.csdb.WithContext(ctx),
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ChainID: intChainID,
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Simulate: ctx.IsCheckTx(),
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}
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if msg.Recipient != nil {
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to := common.BytesToAddress(msg.Recipient.Bytes())
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st.Recipient = &to
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}
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// Prepare db for logs
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keeper.csdb.Prepare(common.Hash{}, common.Hash{}, keeper.txCount.get()) // Cannot provide tx hash
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keeper.txCount.increment()
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_, res := st.TransitionCSDB(ctx)
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return res
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}
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