Merge pull request #451: Transaction Implementation
This commit is contained in:
Aleksandr Bezobchuk
parent
cc1e582d97
commit
fbf3137b85
110
Gopkg.lock
generated
110
Gopkg.lock
generated
@ -3,30 +3,29 @@
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@ -37,11 +36,11 @@
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@ -57,7 +56,7 @@
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@ -94,7 +93,7 @@
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@ -122,7 +121,7 @@
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@ -147,19 +146,18 @@
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"websocket",
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@ -371,14 +363,14 @@
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@ -390,9 +382,11 @@
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@ -419,7 +413,7 @@
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pruneopts = "T"
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"github.com/cosmos/cosmos-sdk/store",
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"github.com/cosmos/cosmos-sdk/wire",
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"github.com/ethereum/go-ethereum/common",
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"github.com/ethereum/go-ethereum/consensus",
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"github.com/ethereum/go-ethereum/core/state",
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"github.com/ethereum/go-ethereum/core/types",
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"github.com/ethereum/go-ethereum/core/vm",
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"github.com/ethereum/go-ethereum/crypto",
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]
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solver-name = "gps-cdcl"
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solver-version = 1
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13
Gopkg.toml
13
Gopkg.toml
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[[constraint]]
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name = "github.com/cosmos/cosmos-sdk"
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version = "=0.21.0"
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version = "=0.23.1"
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[[constraint]]
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name = "github.com/hashicorp/golang-lru"
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revision = "0fb14efe8c47ae851c0034ed7a448854d3d34cf3"
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[[constraint]]
|
||||
name = "github.com/spf13/cobra"
|
||||
@ -19,11 +20,19 @@
|
||||
|
||||
[[override]]
|
||||
name = "github.com/tendermint/tendermint"
|
||||
version = "=0.22.2"
|
||||
version = "=v0.22.8"
|
||||
|
||||
[[constraint]]
|
||||
name = "github.com/stretchr/testify"
|
||||
version = "=1.2.2"
|
||||
|
||||
[[constraint]]
|
||||
name = "github.com/pkg/errors"
|
||||
version = "=0.8.0"
|
||||
|
||||
[[override]]
|
||||
name = "gopkg.in/fatih/set.v0"
|
||||
version = "=0.1.0"
|
||||
|
||||
[prune]
|
||||
go-tests = true
|
||||
|
||||
@ -2,38 +2,73 @@ package app
|
||||
|
||||
import (
|
||||
bam "github.com/cosmos/cosmos-sdk/baseapp"
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
"github.com/cosmos/cosmos-sdk/wire"
|
||||
"github.com/cosmos/cosmos-sdk/x/auth"
|
||||
|
||||
"github.com/cosmos/ethermint/handlers"
|
||||
"github.com/cosmos/ethermint/types"
|
||||
|
||||
ethcmn "github.com/ethereum/go-ethereum/common"
|
||||
ethparams "github.com/ethereum/go-ethereum/params"
|
||||
|
||||
tmcmn "github.com/tendermint/tendermint/libs/common"
|
||||
dbm "github.com/tendermint/tendermint/libs/db"
|
||||
tmlog "github.com/tendermint/tendermint/libs/log"
|
||||
)
|
||||
|
||||
const (
|
||||
appName = "Ethermint"
|
||||
)
|
||||
|
||||
// EthermintApp implements an extended ABCI application.
|
||||
type EthermintApp struct {
|
||||
*bam.BaseApp
|
||||
type (
|
||||
// EthermintApp implements an extended ABCI application. It is an application
|
||||
// that may process transactions through Ethereum's EVM running atop of
|
||||
// Tendermint consensus.
|
||||
EthermintApp struct {
|
||||
*bam.BaseApp
|
||||
|
||||
codec *wire.Codec
|
||||
sealed bool
|
||||
codec *wire.Codec
|
||||
sealed bool
|
||||
|
||||
// TODO: stores and keys
|
||||
accountKey *sdk.KVStoreKey
|
||||
accountMapper auth.AccountMapper
|
||||
// TODO: keys, stores, mappers, and keepers
|
||||
}
|
||||
|
||||
// TODO: keepers
|
||||
|
||||
// TODO: mappers
|
||||
}
|
||||
// Options is a function signature that provides the ability to modify
|
||||
// options of an EthermintApp during initialization.
|
||||
Options func(*EthermintApp)
|
||||
)
|
||||
|
||||
// NewEthermintApp returns a reference to a new initialized Ethermint
|
||||
// application.
|
||||
func NewEthermintApp(opts ...func(*EthermintApp)) *EthermintApp {
|
||||
app := &EthermintApp{}
|
||||
func NewEthermintApp(
|
||||
logger tmlog.Logger, db dbm.DB, ethChainCfg *ethparams.ChainConfig,
|
||||
sdkAddr ethcmn.Address, opts ...Options,
|
||||
) *EthermintApp {
|
||||
|
||||
// TODO: implement constructor
|
||||
codec := CreateCodec()
|
||||
app := &EthermintApp{
|
||||
BaseApp: bam.NewBaseApp(appName, codec, logger, db),
|
||||
codec: codec,
|
||||
accountKey: sdk.NewKVStoreKey("accounts"),
|
||||
}
|
||||
app.accountMapper = auth.NewAccountMapper(codec, app.accountKey, auth.ProtoBaseAccount)
|
||||
|
||||
app.SetTxDecoder(types.TxDecoder(codec, sdkAddr))
|
||||
app.SetAnteHandler(handlers.AnteHandler(app.accountMapper))
|
||||
app.MountStoresIAVL(app.accountKey)
|
||||
|
||||
for _, opt := range opts {
|
||||
opt(app)
|
||||
}
|
||||
|
||||
err := app.LoadLatestVersion(app.accountKey)
|
||||
if err != nil {
|
||||
tmcmn.Exit(err.Error())
|
||||
}
|
||||
|
||||
app.seal()
|
||||
return app
|
||||
}
|
||||
@ -43,3 +78,13 @@ func NewEthermintApp(opts ...func(*EthermintApp)) *EthermintApp {
|
||||
func (app *EthermintApp) seal() {
|
||||
app.sealed = true
|
||||
}
|
||||
|
||||
// CreateCodec creates a new amino wire codec and registers all the necessary
|
||||
// structures and interfaces needed for the application.
|
||||
func CreateCodec() *wire.Codec {
|
||||
codec := wire.NewCodec()
|
||||
|
||||
// Register other modules, types, and messages...
|
||||
types.RegisterWire(codec)
|
||||
return codec
|
||||
}
|
||||
|
||||
196
handlers/ante.go
Normal file
196
handlers/ante.go
Normal file
@ -0,0 +1,196 @@
|
||||
package handlers
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math/big"
|
||||
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
"github.com/cosmos/cosmos-sdk/x/auth"
|
||||
|
||||
"github.com/cosmos/ethermint/types"
|
||||
ethcmn "github.com/ethereum/go-ethereum/common"
|
||||
|
||||
ethtypes "github.com/ethereum/go-ethereum/core/types"
|
||||
)
|
||||
|
||||
const (
|
||||
// TODO: Ported from the SDK and may have a different context/value for
|
||||
// Ethermint.
|
||||
verifySigCost = 100
|
||||
)
|
||||
|
||||
// internalAnteHandler reflects a function signature an internal ante handler
|
||||
// must implementing. Internal ante handlers will be dependant upon the
|
||||
// transaction type.
|
||||
type internalAnteHandler func(
|
||||
sdkCtx sdk.Context, tx sdk.Tx, am auth.AccountMapper,
|
||||
) (newCtx sdk.Context, res sdk.Result, abort bool)
|
||||
|
||||
// AnteHandler handles Ethereum transactions and passes SDK transactions to the
|
||||
// embeddedAnteHandler if it's an Ethermint transaction. The ante handler gets
|
||||
// invoked after the BaseApp performs the runTx. At this point, the transaction
|
||||
// should be properly decoded via the TxDecoder and should be of a proper type,
|
||||
// Transaction or EmbeddedTx.
|
||||
func AnteHandler(am auth.AccountMapper) sdk.AnteHandler {
|
||||
return func(sdkCtx sdk.Context, tx sdk.Tx) (newCtx sdk.Context, res sdk.Result, abort bool) {
|
||||
var (
|
||||
gasLimit int64
|
||||
handler internalAnteHandler
|
||||
)
|
||||
|
||||
switch tx := tx.(type) {
|
||||
case types.Transaction:
|
||||
gasLimit = int64(tx.Data.GasLimit)
|
||||
handler = handleEthTx
|
||||
case types.EmbeddedTx:
|
||||
gasLimit = tx.Fee.Gas
|
||||
handler = handleEmbeddedTx
|
||||
default:
|
||||
return sdkCtx, sdk.ErrInternal(fmt.Sprintf("invalid transaction: %T", tx)).Result(), true
|
||||
}
|
||||
|
||||
newCtx = sdkCtx.WithGasMeter(sdk.NewGasMeter(gasLimit))
|
||||
|
||||
// AnteHandlers must have their own defer/recover in order for the
|
||||
// BaseApp to know how much gas was used! This is because the GasMeter
|
||||
// is created in the AnteHandler, but if it panics the context won't be
|
||||
// set properly in runTx's recover.
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
switch rType := r.(type) {
|
||||
case sdk.ErrorOutOfGas:
|
||||
log := fmt.Sprintf("out of gas in location: %v", rType.Descriptor)
|
||||
res = sdk.ErrOutOfGas(log).Result()
|
||||
res.GasWanted = gasLimit
|
||||
res.GasUsed = newCtx.GasMeter().GasConsumed()
|
||||
abort = true
|
||||
default:
|
||||
panic(r)
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
return handler(newCtx, tx, am)
|
||||
}
|
||||
}
|
||||
|
||||
// handleEthTx implements an ante handler for an Ethereum transaction. It
|
||||
// validates the signature and if valid returns an OK result.
|
||||
//
|
||||
// TODO: Do we need to do any further validation or account manipulation
|
||||
// (e.g. increment nonce)?
|
||||
func handleEthTx(sdkCtx sdk.Context, tx sdk.Tx, am auth.AccountMapper) (sdk.Context, sdk.Result, bool) {
|
||||
ethTx, ok := tx.(types.Transaction)
|
||||
if !ok {
|
||||
return sdkCtx, sdk.ErrInternal(fmt.Sprintf("invalid transaction: %T", tx)).Result(), true
|
||||
}
|
||||
|
||||
// the SDK chainID is a string representation of integer
|
||||
chainID, ok := new(big.Int).SetString(sdkCtx.ChainID(), 10)
|
||||
if !ok {
|
||||
// TODO: ErrInternal may not be correct error to throw here?
|
||||
return sdkCtx, sdk.ErrInternal(fmt.Sprintf("invalid chainID: %s", sdkCtx.ChainID())).Result(), true
|
||||
}
|
||||
|
||||
// validate signature
|
||||
gethTx := ethTx.ConvertTx(chainID)
|
||||
signer := ethtypes.NewEIP155Signer(chainID)
|
||||
|
||||
_, err := signer.Sender(&gethTx)
|
||||
if err != nil {
|
||||
return sdkCtx, sdk.ErrUnauthorized("signature verification failed").Result(), true
|
||||
}
|
||||
|
||||
return sdkCtx, sdk.Result{GasWanted: int64(ethTx.Data.GasLimit)}, false
|
||||
}
|
||||
|
||||
// handleEmbeddedTx implements an ante handler for an SDK transaction. It
|
||||
// validates the signature and if valid returns an OK result.
|
||||
func handleEmbeddedTx(sdkCtx sdk.Context, tx sdk.Tx, am auth.AccountMapper) (sdk.Context, sdk.Result, bool) {
|
||||
etx, ok := tx.(types.EmbeddedTx)
|
||||
if !ok {
|
||||
return sdkCtx, sdk.ErrInternal(fmt.Sprintf("invalid transaction: %T", tx)).Result(), true
|
||||
}
|
||||
|
||||
if err := validateEmbeddedTxBasic(etx); err != nil {
|
||||
return sdkCtx, err.Result(), true
|
||||
}
|
||||
|
||||
signerAddrs := etx.GetRequiredSigners()
|
||||
signerAccs := make([]auth.Account, len(signerAddrs))
|
||||
|
||||
// validate signatures
|
||||
for i, sig := range etx.Signatures {
|
||||
signer := ethcmn.BytesToAddress(signerAddrs[i].Bytes())
|
||||
|
||||
signerAcc, err := validateSignature(sdkCtx, etx, signer, sig, am)
|
||||
if err.Code() != sdk.CodeOK {
|
||||
return sdkCtx, err.Result(), false
|
||||
}
|
||||
|
||||
// TODO: Fees!
|
||||
|
||||
am.SetAccount(sdkCtx, signerAcc)
|
||||
signerAccs[i] = signerAcc
|
||||
}
|
||||
|
||||
newCtx := auth.WithSigners(sdkCtx, signerAccs)
|
||||
|
||||
return newCtx, sdk.Result{GasWanted: etx.Fee.Gas}, false
|
||||
}
|
||||
|
||||
// validateEmbeddedTxBasic validates an EmbeddedTx based on things that don't
|
||||
// depend on the context.
|
||||
func validateEmbeddedTxBasic(etx types.EmbeddedTx) (err sdk.Error) {
|
||||
sigs := etx.Signatures
|
||||
if len(sigs) == 0 {
|
||||
return sdk.ErrUnauthorized("transaction missing signatures")
|
||||
}
|
||||
|
||||
signerAddrs := etx.GetRequiredSigners()
|
||||
if len(sigs) != len(signerAddrs) {
|
||||
return sdk.ErrUnauthorized("invalid number of transaction signers")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func validateSignature(
|
||||
sdkCtx sdk.Context, etx types.EmbeddedTx, signer ethcmn.Address,
|
||||
sig []byte, am auth.AccountMapper,
|
||||
) (acc auth.Account, sdkErr sdk.Error) {
|
||||
|
||||
chainID := sdkCtx.ChainID()
|
||||
|
||||
acc = am.GetAccount(sdkCtx, signer.Bytes())
|
||||
if acc == nil {
|
||||
return nil, sdk.ErrUnknownAddress(fmt.Sprintf("no account with address %s found", signer))
|
||||
}
|
||||
|
||||
signEtx := types.EmbeddedTxSign{
|
||||
ChainID: chainID,
|
||||
AccountNumber: acc.GetAccountNumber(),
|
||||
Sequence: acc.GetSequence(),
|
||||
Messages: etx.Messages,
|
||||
Fee: etx.Fee,
|
||||
}
|
||||
|
||||
err := acc.SetSequence(signEtx.Sequence + 1)
|
||||
if err != nil {
|
||||
return nil, sdk.ErrInternal(err.Error())
|
||||
}
|
||||
|
||||
signBytes, err := signEtx.Bytes()
|
||||
if err != nil {
|
||||
return nil, sdk.ErrInternal(err.Error())
|
||||
}
|
||||
|
||||
// consume gas for signature verification
|
||||
sdkCtx.GasMeter().ConsumeGas(verifySigCost, "ante verify")
|
||||
|
||||
if err := types.ValidateSigner(signBytes, sig, signer); err != nil {
|
||||
return nil, sdk.ErrUnauthorized(err.Error())
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
28
types/errors.go
Normal file
28
types/errors.go
Normal file
@ -0,0 +1,28 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
)
|
||||
|
||||
const (
|
||||
// DefaultCodespace reserves a Codespace for Ethermint, as 0 and 1 are
|
||||
// reserved by SDK.
|
||||
DefaultCodespace sdk.CodespaceType = 2
|
||||
|
||||
// CodeInvalidValue reserves the CodeInvalidValue with first non-OK
|
||||
// codetype.
|
||||
CodeInvalidValue sdk.CodeType = 1
|
||||
)
|
||||
|
||||
func codeToDefaultMsg(code sdk.CodeType) string {
|
||||
switch code {
|
||||
default:
|
||||
return sdk.CodeToDefaultMsg(code)
|
||||
}
|
||||
}
|
||||
|
||||
// ErrInvalidValue returns a standardized SDK error for a given codespace and
|
||||
// message.
|
||||
func ErrInvalidValue(codespace sdk.CodespaceType, msg string) sdk.Error {
|
||||
return sdk.NewError(codespace, CodeInvalidValue, msg)
|
||||
}
|
||||
441
types/tx.go
Normal file
441
types/tx.go
Normal file
@ -0,0 +1,441 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/ecdsa"
|
||||
"crypto/sha256"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"sync/atomic"
|
||||
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
"github.com/cosmos/cosmos-sdk/wire"
|
||||
"github.com/cosmos/cosmos-sdk/x/auth"
|
||||
ethcmn "github.com/ethereum/go-ethereum/common"
|
||||
ethtypes "github.com/ethereum/go-ethereum/core/types"
|
||||
ethcrypto "github.com/ethereum/go-ethereum/crypto"
|
||||
ethsha "github.com/ethereum/go-ethereum/crypto/sha3"
|
||||
"github.com/ethereum/go-ethereum/rlp"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
const (
|
||||
// TypeTxEthereum reflects an Ethereum Transaction type.
|
||||
TypeTxEthereum = "Ethereum"
|
||||
)
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Ethereum transaction
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
type (
|
||||
// Transaction implements the Ethereum transaction structure as an exact
|
||||
// copy. It implements the Cosmos sdk.Tx interface. Due to the private
|
||||
// fields, it must be replicated here and cannot be embedded or used
|
||||
// directly.
|
||||
//
|
||||
// Note: The transaction also implements the sdk.Msg interface to perform
|
||||
// basic validation that is done in the BaseApp.
|
||||
Transaction struct {
|
||||
Data TxData
|
||||
|
||||
// caches
|
||||
hash atomic.Value
|
||||
size atomic.Value
|
||||
from atomic.Value
|
||||
}
|
||||
|
||||
// TxData implements the Ethereum transaction data structure as an exact
|
||||
// copy. It is used solely as intended in Ethereum abiding by the protocol
|
||||
// except for the payload field which may embed a Cosmos SDK transaction.
|
||||
TxData struct {
|
||||
AccountNonce uint64 `json:"nonce"`
|
||||
Price sdk.Int `json:"gasPrice"`
|
||||
GasLimit uint64 `json:"gas"`
|
||||
Recipient *ethcmn.Address `json:"to"` // nil means contract creation
|
||||
Amount sdk.Int `json:"value"`
|
||||
Payload []byte `json:"input"`
|
||||
Signature *EthSignature `json:"signature"`
|
||||
|
||||
// hash is only used when marshaling to JSON
|
||||
Hash *ethcmn.Hash `json:"hash"`
|
||||
}
|
||||
|
||||
// EthSignature reflects an Ethereum signature. We wrap this in a structure
|
||||
// to support Amino serialization of transactions.
|
||||
EthSignature struct {
|
||||
v, r, s *big.Int
|
||||
}
|
||||
)
|
||||
|
||||
// NewEthSignature returns a new instantiated Ethereum signature.
|
||||
func NewEthSignature(v, r, s *big.Int) *EthSignature {
|
||||
return &EthSignature{v, r, s}
|
||||
}
|
||||
|
||||
func (es *EthSignature) sanitize() {
|
||||
if es.v == nil {
|
||||
es.v = new(big.Int)
|
||||
}
|
||||
if es.r == nil {
|
||||
es.r = new(big.Int)
|
||||
}
|
||||
if es.s == nil {
|
||||
es.s = new(big.Int)
|
||||
}
|
||||
}
|
||||
|
||||
// MarshalAmino defines a custom encoding scheme for a EthSignature.
|
||||
func (es EthSignature) MarshalAmino() ([3]string, error) {
|
||||
es.sanitize()
|
||||
return ethSigMarshalAmino(es)
|
||||
}
|
||||
|
||||
// UnmarshalAmino defines a custom decoding scheme for a EthSignature.
|
||||
func (es *EthSignature) UnmarshalAmino(raw [3]string) error {
|
||||
es.sanitize()
|
||||
return ethSigUnmarshalAmino(es, raw)
|
||||
}
|
||||
|
||||
// NewTransaction mimics ethereum's NewTransaction function. It returns a
|
||||
// reference to a new Ethereum Transaction.
|
||||
func NewTransaction(
|
||||
nonce uint64, to ethcmn.Address, amount sdk.Int,
|
||||
gasLimit uint64, gasPrice sdk.Int, payload []byte,
|
||||
) Transaction {
|
||||
|
||||
if len(payload) > 0 {
|
||||
payload = ethcmn.CopyBytes(payload)
|
||||
}
|
||||
|
||||
txData := TxData{
|
||||
Recipient: &to,
|
||||
AccountNonce: nonce,
|
||||
Payload: payload,
|
||||
GasLimit: gasLimit,
|
||||
Amount: amount,
|
||||
Price: gasPrice,
|
||||
Signature: NewEthSignature(new(big.Int), new(big.Int), new(big.Int)),
|
||||
}
|
||||
|
||||
return Transaction{Data: txData}
|
||||
}
|
||||
|
||||
// Sign calculates a secp256k1 ECDSA signature and signs the transaction. It
|
||||
// takes a private key and chainID to sign an Ethereum transaction according to
|
||||
// EIP155 standard. It mutates the transaction as it populates the V, R, S
|
||||
// fields of the Transaction's Signature.
|
||||
func (tx *Transaction) Sign(chainID sdk.Int, priv *ecdsa.PrivateKey) {
|
||||
h := rlpHash([]interface{}{
|
||||
tx.Data.AccountNonce,
|
||||
tx.Data.Price.BigInt(),
|
||||
tx.Data.GasLimit,
|
||||
tx.Data.Recipient,
|
||||
tx.Data.Amount.BigInt(),
|
||||
tx.Data.Payload,
|
||||
chainID.BigInt(), uint(0), uint(0),
|
||||
})
|
||||
|
||||
sig, err := ethcrypto.Sign(h[:], priv)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
if len(sig) != 65 {
|
||||
panic(fmt.Sprintf("wrong size for signature: got %d, want 65", len(sig)))
|
||||
}
|
||||
|
||||
r := new(big.Int).SetBytes(sig[:32])
|
||||
s := new(big.Int).SetBytes(sig[32:64])
|
||||
|
||||
var v *big.Int
|
||||
if chainID.Sign() == 0 {
|
||||
v = new(big.Int).SetBytes([]byte{sig[64] + 27})
|
||||
} else {
|
||||
v = big.NewInt(int64(sig[64] + 35))
|
||||
chainIDMul := new(big.Int).Mul(chainID.BigInt(), big.NewInt(2))
|
||||
v.Add(v, chainIDMul)
|
||||
}
|
||||
|
||||
tx.Data.Signature.v = v
|
||||
tx.Data.Signature.r = r
|
||||
tx.Data.Signature.s = s
|
||||
}
|
||||
|
||||
// Type implements the sdk.Msg interface. It returns the type of the
|
||||
// Transaction.
|
||||
func (tx Transaction) Type() string {
|
||||
return TypeTxEthereum
|
||||
}
|
||||
|
||||
// ValidateBasic implements the sdk.Msg interface. It performs basic validation
|
||||
// checks of a Transaction. If returns an sdk.Error if validation fails.
|
||||
func (tx Transaction) ValidateBasic() sdk.Error {
|
||||
if tx.Data.Price.Sign() != 1 {
|
||||
return ErrInvalidValue(DefaultCodespace, "price must be positive")
|
||||
}
|
||||
|
||||
if tx.Data.Amount.Sign() != 1 {
|
||||
return ErrInvalidValue(DefaultCodespace, "amount must be positive")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetSignBytes performs a no-op and should not be used. It implements the
|
||||
// sdk.Msg Interface
|
||||
func (tx Transaction) GetSignBytes() (sigBytes []byte) { return }
|
||||
|
||||
// GetSigners performs a no-op and should not be used. It implements the
|
||||
// sdk.Msg Interface
|
||||
//
|
||||
// CONTRACT: The transaction must already be signed.
|
||||
func (tx Transaction) GetSigners() (signers []sdk.AccAddress) { return }
|
||||
|
||||
// GetMsgs returns a single message containing the Transaction itself. It
|
||||
// implements the Cosmos sdk.Tx interface.
|
||||
func (tx Transaction) GetMsgs() []sdk.Msg {
|
||||
return []sdk.Msg{tx}
|
||||
}
|
||||
|
||||
// ConvertTx attempts to converts a Transaction to a new Ethereum transaction
|
||||
// with the signature set. The signature if first recovered and then a new
|
||||
// Transaction is created with that signature. If setting the signature fails,
|
||||
// a panic will be triggered.
|
||||
func (tx Transaction) ConvertTx(chainID *big.Int) ethtypes.Transaction {
|
||||
gethTx := ethtypes.NewTransaction(
|
||||
tx.Data.AccountNonce, *tx.Data.Recipient, tx.Data.Amount.BigInt(),
|
||||
tx.Data.GasLimit, tx.Data.Price.BigInt(), tx.Data.Payload,
|
||||
)
|
||||
|
||||
sig := recoverEthSig(tx.Data.Signature, chainID)
|
||||
signer := ethtypes.NewEIP155Signer(chainID)
|
||||
|
||||
gethTx, err := gethTx.WithSignature(signer, sig)
|
||||
if err != nil {
|
||||
panic(errors.Wrap(err, "failed to convert transaction with a given signature"))
|
||||
}
|
||||
|
||||
return *gethTx
|
||||
}
|
||||
|
||||
// HasEmbeddedTx returns a boolean reflecting if the transaction contains an
|
||||
// SDK transaction or not based on the recipient address.
|
||||
func (tx Transaction) HasEmbeddedTx(addr ethcmn.Address) bool {
|
||||
return bytes.Equal(tx.Data.Recipient.Bytes(), addr.Bytes())
|
||||
}
|
||||
|
||||
// GetEmbeddedTx returns the embedded SDK transaction from an Ethereum
|
||||
// transaction. It returns an error if decoding the inner transaction fails.
|
||||
//
|
||||
// CONTRACT: The payload field of an Ethereum transaction must contain a valid
|
||||
// encoded SDK transaction.
|
||||
func (tx Transaction) GetEmbeddedTx(codec *wire.Codec) (EmbeddedTx, sdk.Error) {
|
||||
etx := EmbeddedTx{}
|
||||
|
||||
err := codec.UnmarshalBinary(tx.Data.Payload, &etx)
|
||||
if err != nil {
|
||||
return EmbeddedTx{}, sdk.ErrTxDecode("failed to encode embedded tx")
|
||||
}
|
||||
|
||||
return etx, nil
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// embedded SDK transaction
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
type (
|
||||
// EmbeddedTx implements an SDK transaction. It is to be encoded into the
|
||||
// payload field of an Ethereum transaction in order to route and handle SDK
|
||||
// transactions.
|
||||
EmbeddedTx struct {
|
||||
Messages []sdk.Msg `json:"messages"`
|
||||
Fee auth.StdFee `json:"fee"`
|
||||
Signatures [][]byte `json:"signatures"`
|
||||
}
|
||||
|
||||
// embeddedSignDoc implements a simple SignDoc for a EmbeddedTx signer to
|
||||
// sign over.
|
||||
embeddedSignDoc struct {
|
||||
ChainID string `json:"chainID"`
|
||||
AccountNumber int64 `json:"accountNumber"`
|
||||
Sequence int64 `json:"sequence"`
|
||||
Messages []json.RawMessage `json:"messages"`
|
||||
Fee json.RawMessage `json:"fee"`
|
||||
}
|
||||
|
||||
// EmbeddedTxSign implements a structure for containing the information
|
||||
// necessary for building and signing an EmbeddedTx.
|
||||
EmbeddedTxSign struct {
|
||||
ChainID string
|
||||
AccountNumber int64
|
||||
Sequence int64
|
||||
Messages []sdk.Msg
|
||||
Fee auth.StdFee
|
||||
}
|
||||
)
|
||||
|
||||
// GetMsgs implements the sdk.Tx interface. It returns all the SDK transaction
|
||||
// messages.
|
||||
func (etx EmbeddedTx) GetMsgs() []sdk.Msg {
|
||||
return etx.Messages
|
||||
}
|
||||
|
||||
// GetRequiredSigners returns all the required signers of an SDK transaction
|
||||
// accumulated from messages. It returns them in a deterministic fashion given
|
||||
// a list of messages.
|
||||
func (etx EmbeddedTx) GetRequiredSigners() []sdk.AccAddress {
|
||||
seen := map[string]bool{}
|
||||
|
||||
var signers []sdk.AccAddress
|
||||
for _, msg := range etx.GetMsgs() {
|
||||
for _, addr := range msg.GetSigners() {
|
||||
if !seen[addr.String()] {
|
||||
signers = append(signers, sdk.AccAddress(addr))
|
||||
seen[addr.String()] = true
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return signers
|
||||
}
|
||||
|
||||
// Bytes returns the EmbeddedTxSign signature bytes for a signer to sign over.
|
||||
func (ets EmbeddedTxSign) Bytes() ([]byte, error) {
|
||||
sigBytes, err := EmbeddedSignBytes(ets.ChainID, ets.AccountNumber, ets.Sequence, ets.Messages, ets.Fee)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
hash := sha256.Sum256(sigBytes)
|
||||
return hash[:], nil
|
||||
}
|
||||
|
||||
// EmbeddedSignBytes creates signature bytes for a signer to sign an embedded
|
||||
// transaction. The signature bytes require a chainID and an account number.
|
||||
// The signature bytes are JSON encoded.
|
||||
func EmbeddedSignBytes(chainID string, accnum, sequence int64, msgs []sdk.Msg, fee auth.StdFee) ([]byte, error) {
|
||||
var msgsBytes []json.RawMessage
|
||||
for _, msg := range msgs {
|
||||
msgsBytes = append(msgsBytes, json.RawMessage(msg.GetSignBytes()))
|
||||
}
|
||||
|
||||
signDoc := embeddedSignDoc{
|
||||
ChainID: chainID,
|
||||
AccountNumber: accnum,
|
||||
Sequence: sequence,
|
||||
Messages: msgsBytes,
|
||||
Fee: json.RawMessage(fee.Bytes()),
|
||||
}
|
||||
|
||||
bz, err := typesCodec.MarshalJSON(signDoc)
|
||||
if err != nil {
|
||||
errors.Wrap(err, "failed to JSON encode EmbeddedSignDoc")
|
||||
}
|
||||
|
||||
return bz, nil
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// Utilities
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// TxDecoder returns an sdk.TxDecoder that given raw transaction bytes,
|
||||
// attempts to decode them into a Transaction or an EmbeddedTx or returning an
|
||||
// error if decoding fails.
|
||||
func TxDecoder(codec *wire.Codec, sdkAddress ethcmn.Address) sdk.TxDecoder {
|
||||
return func(txBytes []byte) (sdk.Tx, sdk.Error) {
|
||||
var tx = Transaction{}
|
||||
|
||||
if len(txBytes) == 0 {
|
||||
return nil, sdk.ErrTxDecode("txBytes are empty")
|
||||
}
|
||||
|
||||
// The given codec should have all the appropriate message types
|
||||
// registered.
|
||||
err := codec.UnmarshalBinary(txBytes, &tx)
|
||||
if err != nil {
|
||||
return nil, sdk.ErrTxDecode("failed to decode tx").TraceSDK(err.Error())
|
||||
}
|
||||
|
||||
// If the transaction is routed as an SDK transaction, decode and
|
||||
// return the embedded transaction.
|
||||
if tx.HasEmbeddedTx(sdkAddress) {
|
||||
etx, err := tx.GetEmbeddedTx(codec)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return etx, nil
|
||||
}
|
||||
|
||||
return tx, nil
|
||||
}
|
||||
}
|
||||
|
||||
// recoverEthSig recovers a signature according to the Ethereum specification.
|
||||
func recoverEthSig(es *EthSignature, chainID *big.Int) []byte {
|
||||
var v byte
|
||||
|
||||
r, s := es.r.Bytes(), es.s.Bytes()
|
||||
sig := make([]byte, 65)
|
||||
|
||||
copy(sig[32-len(r):32], r)
|
||||
copy(sig[64-len(s):64], s)
|
||||
|
||||
if chainID.Sign() == 0 {
|
||||
v = byte(es.v.Uint64() - 27)
|
||||
} else {
|
||||
chainIDMul := new(big.Int).Mul(chainID, big.NewInt(2))
|
||||
V := new(big.Int).Sub(es.v, chainIDMul)
|
||||
|
||||
v = byte(V.Uint64() - 35)
|
||||
}
|
||||
|
||||
sig[64] = v
|
||||
return sig
|
||||
}
|
||||
|
||||
func rlpHash(x interface{}) (h ethcmn.Hash) {
|
||||
hasher := ethsha.NewKeccak256()
|
||||
|
||||
rlp.Encode(hasher, x)
|
||||
hasher.Sum(h[:0])
|
||||
|
||||
return h
|
||||
}
|
||||
|
||||
func ethSigMarshalAmino(es EthSignature) (raw [3]string, err error) {
|
||||
vb, err := es.v.MarshalText()
|
||||
if err != nil {
|
||||
return raw, err
|
||||
}
|
||||
rb, err := es.r.MarshalText()
|
||||
if err != nil {
|
||||
return raw, err
|
||||
}
|
||||
sb, err := es.s.MarshalText()
|
||||
if err != nil {
|
||||
return raw, err
|
||||
}
|
||||
|
||||
raw[0], raw[1], raw[2] = string(vb), string(rb), string(sb)
|
||||
return raw, err
|
||||
}
|
||||
|
||||
func ethSigUnmarshalAmino(es *EthSignature, raw [3]string) (err error) {
|
||||
if err = es.v.UnmarshalText([]byte(raw[0])); err != nil {
|
||||
return
|
||||
}
|
||||
if err = es.r.UnmarshalText([]byte(raw[1])); err != nil {
|
||||
return
|
||||
}
|
||||
if err = es.s.UnmarshalText([]byte(raw[2])); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
326
types/tx_test.go
Normal file
326
types/tx_test.go
Normal file
@ -0,0 +1,326 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
"crypto/ecdsa"
|
||||
"fmt"
|
||||
"math/big"
|
||||
"testing"
|
||||
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
"github.com/cosmos/cosmos-sdk/wire"
|
||||
"github.com/cosmos/cosmos-sdk/x/auth"
|
||||
ethcmn "github.com/ethereum/go-ethereum/common"
|
||||
ethtypes "github.com/ethereum/go-ethereum/core/types"
|
||||
ethcrypto "github.com/ethereum/go-ethereum/crypto"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
var (
|
||||
testChainID = sdk.NewInt(3)
|
||||
|
||||
testPrivKey1, _ = ethcrypto.GenerateKey()
|
||||
testPrivKey2, _ = ethcrypto.GenerateKey()
|
||||
|
||||
testAddr1 = PrivKeyToEthAddress(testPrivKey1)
|
||||
testAddr2 = PrivKeyToEthAddress(testPrivKey2)
|
||||
|
||||
testSDKAddress = GenerateEthAddress()
|
||||
)
|
||||
|
||||
func newTestCodec() *wire.Codec {
|
||||
codec := wire.NewCodec()
|
||||
|
||||
RegisterWire(codec)
|
||||
codec.RegisterConcrete(&sdk.TestMsg{}, "test/TestMsg", nil)
|
||||
|
||||
return codec
|
||||
}
|
||||
|
||||
func newStdFee() auth.StdFee {
|
||||
return auth.NewStdFee(5000, sdk.NewCoin("photon", 150))
|
||||
}
|
||||
|
||||
func newTestEmbeddedTx(
|
||||
chainID sdk.Int, msgs []sdk.Msg, pKeys []*ecdsa.PrivateKey,
|
||||
accNums []int64, seqs []int64, fee auth.StdFee,
|
||||
) sdk.Tx {
|
||||
|
||||
sigs := make([][]byte, len(pKeys))
|
||||
|
||||
for i, priv := range pKeys {
|
||||
signEtx := EmbeddedTxSign{chainID.String(), accNums[i], seqs[i], msgs, newStdFee()}
|
||||
|
||||
signBytes, err := signEtx.Bytes()
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
sig, err := ethcrypto.Sign(signBytes, priv)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
sigs[i] = sig
|
||||
}
|
||||
|
||||
return EmbeddedTx{msgs, fee, sigs}
|
||||
}
|
||||
|
||||
func newTestGethTxs(chainID sdk.Int, pKeys []*ecdsa.PrivateKey, addrs []ethcmn.Address) []ethtypes.Transaction {
|
||||
txs := make([]ethtypes.Transaction, len(pKeys))
|
||||
|
||||
for i, priv := range pKeys {
|
||||
ethTx := ethtypes.NewTransaction(
|
||||
uint64(i), addrs[i], big.NewInt(10), 100, big.NewInt(100), nil,
|
||||
)
|
||||
|
||||
signer := ethtypes.NewEIP155Signer(chainID.BigInt())
|
||||
ethTx, _ = ethtypes.SignTx(ethTx, signer, priv)
|
||||
|
||||
txs[i] = *ethTx
|
||||
}
|
||||
|
||||
return txs
|
||||
}
|
||||
|
||||
func newTestEthTxs(chainID sdk.Int, pKeys []*ecdsa.PrivateKey, addrs []ethcmn.Address) []Transaction {
|
||||
txs := make([]Transaction, len(pKeys))
|
||||
|
||||
for i, priv := range pKeys {
|
||||
emintTx := NewTransaction(
|
||||
uint64(i), addrs[i], sdk.NewInt(10), 100, sdk.NewInt(100), nil,
|
||||
)
|
||||
|
||||
emintTx.Sign(chainID, priv)
|
||||
|
||||
txs[i] = emintTx
|
||||
}
|
||||
|
||||
return txs
|
||||
}
|
||||
|
||||
func newTestSDKTxs(
|
||||
codec *wire.Codec, chainID sdk.Int, msgs []sdk.Msg, pKeys []*ecdsa.PrivateKey,
|
||||
accNums []int64, seqs []int64, fee auth.StdFee,
|
||||
) []Transaction {
|
||||
|
||||
txs := make([]Transaction, len(pKeys))
|
||||
etx := newTestEmbeddedTx(chainID, msgs, pKeys, accNums, seqs, fee)
|
||||
|
||||
for i, priv := range pKeys {
|
||||
payload := codec.MustMarshalBinary(etx)
|
||||
|
||||
emintTx := NewTransaction(
|
||||
uint64(i), testSDKAddress, sdk.NewInt(10), 100,
|
||||
sdk.NewInt(100), payload,
|
||||
)
|
||||
|
||||
emintTx.Sign(testChainID, priv)
|
||||
|
||||
txs[i] = emintTx
|
||||
}
|
||||
|
||||
return txs
|
||||
}
|
||||
|
||||
func TestConvertTx(t *testing.T) {
|
||||
gethTxs := newTestGethTxs(
|
||||
testChainID,
|
||||
[]*ecdsa.PrivateKey{testPrivKey1, testPrivKey2},
|
||||
[]ethcmn.Address{testAddr1, testAddr2},
|
||||
)
|
||||
ethTxs := newTestEthTxs(
|
||||
testChainID,
|
||||
[]*ecdsa.PrivateKey{testPrivKey1, testPrivKey2},
|
||||
[]ethcmn.Address{testAddr1, testAddr2},
|
||||
)
|
||||
|
||||
testCases := []struct {
|
||||
ethTx ethtypes.Transaction
|
||||
emintTx Transaction
|
||||
expectedEq bool
|
||||
}{
|
||||
{gethTxs[0], ethTxs[0], true},
|
||||
{gethTxs[0], ethTxs[1], false},
|
||||
{gethTxs[1], ethTxs[0], false},
|
||||
}
|
||||
|
||||
for i, tc := range testCases {
|
||||
convertedTx := tc.emintTx.ConvertTx(testChainID.BigInt())
|
||||
|
||||
if tc.expectedEq {
|
||||
require.Equal(t, tc.ethTx, convertedTx, fmt.Sprintf("unexpected result: test case #%d", i))
|
||||
} else {
|
||||
require.NotEqual(t, tc.ethTx, convertedTx, fmt.Sprintf("unexpected result: test case #%d", i))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestValidation(t *testing.T) {
|
||||
ethTxs := newTestEthTxs(
|
||||
testChainID,
|
||||
[]*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]ethcmn.Address{testAddr1},
|
||||
)
|
||||
|
||||
testCases := []struct {
|
||||
msg sdk.Msg
|
||||
mutate func(sdk.Msg) sdk.Msg
|
||||
expectedErr bool
|
||||
}{
|
||||
{ethTxs[0], func(msg sdk.Msg) sdk.Msg { return msg }, false},
|
||||
{ethTxs[0], func(msg sdk.Msg) sdk.Msg {
|
||||
tx := msg.(Transaction)
|
||||
tx.Data.Price = sdk.NewInt(-1)
|
||||
return tx
|
||||
}, true},
|
||||
{ethTxs[0], func(msg sdk.Msg) sdk.Msg {
|
||||
tx := msg.(Transaction)
|
||||
tx.Data.Amount = sdk.NewInt(-1)
|
||||
return tx
|
||||
}, true},
|
||||
}
|
||||
|
||||
for i, tc := range testCases {
|
||||
msg := tc.mutate(tc.msg)
|
||||
err := msg.ValidateBasic()
|
||||
|
||||
if tc.expectedErr {
|
||||
require.NotEqual(t, sdk.CodeOK, err.Code(), fmt.Sprintf("expected error: test case #%d", i))
|
||||
} else {
|
||||
require.NoError(t, err, fmt.Sprintf("unexpected error: test case #%d", i))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestHasEmbeddedTx(t *testing.T) {
|
||||
testCodec := newTestCodec()
|
||||
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(testAddr1.Bytes()))}
|
||||
|
||||
sdkTxs := newTestSDKTxs(
|
||||
testCodec, testChainID, msgs, []*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]int64{0}, []int64{0}, newStdFee(),
|
||||
)
|
||||
require.True(t, sdkTxs[0].HasEmbeddedTx(testSDKAddress))
|
||||
|
||||
ethTxs := newTestEthTxs(
|
||||
testChainID,
|
||||
[]*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]ethcmn.Address{testAddr1},
|
||||
)
|
||||
require.False(t, ethTxs[0].HasEmbeddedTx(testSDKAddress))
|
||||
}
|
||||
|
||||
func TestGetEmbeddedTx(t *testing.T) {
|
||||
testCodec := newTestCodec()
|
||||
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(testAddr1.Bytes()))}
|
||||
|
||||
ethTxs := newTestEthTxs(
|
||||
testChainID,
|
||||
[]*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]ethcmn.Address{testAddr1},
|
||||
)
|
||||
sdkTxs := newTestSDKTxs(
|
||||
testCodec, testChainID, msgs, []*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]int64{0}, []int64{0}, newStdFee(),
|
||||
)
|
||||
|
||||
etx, err := sdkTxs[0].GetEmbeddedTx(testCodec)
|
||||
require.NoError(t, err)
|
||||
require.NotEmpty(t, etx.Messages)
|
||||
|
||||
etx, err = ethTxs[0].GetEmbeddedTx(testCodec)
|
||||
require.Error(t, err)
|
||||
require.Empty(t, etx.Messages)
|
||||
}
|
||||
|
||||
func TestTransactionGetMsgs(t *testing.T) {
|
||||
ethTxs := newTestEthTxs(
|
||||
testChainID,
|
||||
[]*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]ethcmn.Address{testAddr1},
|
||||
)
|
||||
|
||||
msgs := ethTxs[0].GetMsgs()
|
||||
require.Len(t, msgs, 1)
|
||||
require.Equal(t, ethTxs[0], msgs[0])
|
||||
|
||||
expectedMsgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(testAddr1.Bytes()))}
|
||||
etx := newTestEmbeddedTx(
|
||||
testChainID, expectedMsgs, []*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]int64{0}, []int64{0}, newStdFee(),
|
||||
)
|
||||
|
||||
msgs = etx.GetMsgs()
|
||||
require.Len(t, msgs, len(expectedMsgs))
|
||||
require.Equal(t, expectedMsgs, msgs)
|
||||
}
|
||||
|
||||
func TestGetRequiredSigners(t *testing.T) {
|
||||
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(testAddr1.Bytes()))}
|
||||
etx := newTestEmbeddedTx(
|
||||
testChainID, msgs, []*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]int64{0}, []int64{0}, newStdFee(),
|
||||
)
|
||||
|
||||
signers := etx.(EmbeddedTx).GetRequiredSigners()
|
||||
require.Equal(t, []sdk.AccAddress{sdk.AccAddress(testAddr1.Bytes())}, signers)
|
||||
}
|
||||
|
||||
func TestTxDecoder(t *testing.T) {
|
||||
testCodec := newTestCodec()
|
||||
txDecoder := TxDecoder(testCodec, testSDKAddress)
|
||||
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(testAddr1.Bytes()))}
|
||||
|
||||
// create a non-SDK Ethereum transaction
|
||||
emintTx := NewTransaction(
|
||||
uint64(0), testAddr1, sdk.NewInt(10), 100, sdk.NewInt(100), nil,
|
||||
)
|
||||
emintTx.Sign(testChainID, testPrivKey1)
|
||||
|
||||
// require the transaction to properly decode into a Transaction
|
||||
txBytes := testCodec.MustMarshalBinary(emintTx)
|
||||
tx, err := txDecoder(txBytes)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, emintTx, tx)
|
||||
|
||||
// create embedded transaction and encode
|
||||
etx := newTestEmbeddedTx(
|
||||
testChainID, msgs, []*ecdsa.PrivateKey{testPrivKey1},
|
||||
[]int64{0}, []int64{0}, newStdFee(),
|
||||
)
|
||||
|
||||
payload := testCodec.MustMarshalBinary(etx)
|
||||
|
||||
expectedEtx := EmbeddedTx{}
|
||||
testCodec.UnmarshalBinary(payload, &expectedEtx)
|
||||
|
||||
emintTx = NewTransaction(
|
||||
uint64(0), testSDKAddress, sdk.NewInt(10), 100,
|
||||
sdk.NewInt(100), payload,
|
||||
)
|
||||
emintTx.Sign(testChainID, testPrivKey1)
|
||||
|
||||
// require the transaction to properly decode into a Transaction
|
||||
txBytes = testCodec.MustMarshalBinary(emintTx)
|
||||
tx, err = txDecoder(txBytes)
|
||||
require.NoError(t, err)
|
||||
require.Equal(t, expectedEtx, tx)
|
||||
|
||||
// require the decoding to fail when no transaction bytes are given
|
||||
tx, err = txDecoder([]byte{})
|
||||
require.Error(t, err)
|
||||
require.Nil(t, tx)
|
||||
|
||||
// create a non-SDK Ethereum transaction with an SDK address and garbage payload
|
||||
emintTx = NewTransaction(
|
||||
uint64(0), testSDKAddress, sdk.NewInt(10), 100, sdk.NewInt(100), []byte("garbage"),
|
||||
)
|
||||
emintTx.Sign(testChainID, testPrivKey1)
|
||||
|
||||
// require the transaction to fail decoding as the payload is invalid
|
||||
txBytes = testCodec.MustMarshalBinary(emintTx)
|
||||
tx, err = txDecoder(txBytes)
|
||||
require.Error(t, err)
|
||||
require.Nil(t, tx)
|
||||
}
|
||||
41
types/utils.go
Normal file
41
types/utils.go
Normal file
@ -0,0 +1,41 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
"crypto/ecdsa"
|
||||
"fmt"
|
||||
|
||||
ethcmn "github.com/ethereum/go-ethereum/common"
|
||||
ethcrypto "github.com/ethereum/go-ethereum/crypto"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
// GenerateAddress generates an Ethereum address.
|
||||
func GenerateEthAddress() ethcmn.Address {
|
||||
priv, err := ethcrypto.GenerateKey()
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
|
||||
return PrivKeyToEthAddress(priv)
|
||||
}
|
||||
|
||||
// PrivKeyToEthAddress generates an Ethereum address given an ECDSA private key.
|
||||
func PrivKeyToEthAddress(p *ecdsa.PrivateKey) ethcmn.Address {
|
||||
return ethcrypto.PubkeyToAddress(ecdsa.PublicKey(p.PublicKey))
|
||||
}
|
||||
|
||||
// ValidateSigner attempts to validate a signer for a given slice of bytes over
|
||||
// which a signature and signer is given. An error is returned if address
|
||||
// derived from the signature and bytes signed does not match the given signer.
|
||||
func ValidateSigner(signBytes, sig []byte, signer ethcmn.Address) error {
|
||||
pk, err := ethcrypto.SigToPub(signBytes, sig)
|
||||
|
||||
if err != nil {
|
||||
return errors.Wrap(err, "signature verification failed")
|
||||
} else if ethcrypto.PubkeyToAddress(*pk) != signer {
|
||||
return fmt.Errorf("invalid signature for signer: %s", signer)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
36
types/utils_test.go
Normal file
36
types/utils_test.go
Normal file
@ -0,0 +1,36 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"github.com/stretchr/testify/require"
|
||||
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
ethcrypto "github.com/ethereum/go-ethereum/crypto"
|
||||
)
|
||||
|
||||
func TestValidateSigner(t *testing.T) {
|
||||
msgs := []sdk.Msg{sdk.NewTestMsg(sdk.AccAddress(testAddr1.Bytes()))}
|
||||
|
||||
// create message signing structure
|
||||
signEtx := EmbeddedTxSign{testChainID.String(), 0, 0, msgs, newStdFee()}
|
||||
|
||||
// create signing bytes and sign
|
||||
signBytes, err := signEtx.Bytes()
|
||||
require.NoError(t, err)
|
||||
|
||||
// require signing not to fail
|
||||
sig, err := ethcrypto.Sign(signBytes, testPrivKey1)
|
||||
require.NoError(t, err)
|
||||
|
||||
// require signature to be valid
|
||||
err = ValidateSigner(signBytes, sig, testAddr1)
|
||||
require.NoError(t, err)
|
||||
|
||||
sig, err = ethcrypto.Sign(signBytes, testPrivKey2)
|
||||
require.NoError(t, err)
|
||||
|
||||
// require signature to be invalid
|
||||
err = ValidateSigner(signBytes, sig, testAddr1)
|
||||
require.Error(t, err)
|
||||
}
|
||||
22
types/wire.go
Normal file
22
types/wire.go
Normal file
@ -0,0 +1,22 @@
|
||||
package types
|
||||
|
||||
import (
|
||||
sdk "github.com/cosmos/cosmos-sdk/types"
|
||||
"github.com/cosmos/cosmos-sdk/wire"
|
||||
)
|
||||
|
||||
var typesCodec = wire.NewCodec()
|
||||
|
||||
func init() {
|
||||
RegisterWire(typesCodec)
|
||||
}
|
||||
|
||||
// RegisterWire registers all the necessary types with amino for the given
|
||||
// codec.
|
||||
func RegisterWire(codec *wire.Codec) {
|
||||
sdk.RegisterWire(codec)
|
||||
codec.RegisterConcrete(&EthSignature{}, "types/EthSignature", nil)
|
||||
codec.RegisterConcrete(TxData{}, "types/TxData", nil)
|
||||
codec.RegisterConcrete(Transaction{}, "types/Transaction", nil)
|
||||
codec.RegisterConcrete(EmbeddedTx{}, "types/EmbeddedTx", nil)
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user