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account.go
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account.go
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package starknetgo
import (
"context"
"errors"
"fmt"
"math/big"
"github.com/NethermindEth/juno/core/felt"
"github.com/NethermindEth/starknet.go/gateway"
"github.com/NethermindEth/starknet.go/rpc"
"github.com/NethermindEth/starknet.go/types"
"github.com/NethermindEth/starknet.go/utils"
)
var (
ErrUnsupportedAccount = errors.New("unsupported account implementation")
MAX_FEE, _ = big.NewInt(0).SetString("0x20000000000000", 0) // todo(use felt package)
)
const (
TRANSACTION_PREFIX = "invoke"
DECLARE_PREFIX = "declare"
EXECUTE_SELECTOR = "__execute__"
CONTRACT_ADDRESS_PREFIX = "STARKNET_CONTRACT_ADDRESS"
)
type account interface {
TransactionHash(calls []types.FunctionCall, details types.ExecuteDetails) (*big.Int, error)
Call(ctx context.Context, call rpc.FunctionCall) ([]*felt.Felt, error)
Nonce(ctx context.Context) (*big.Int, error)
EstimateFee(ctx context.Context, calls []types.FunctionCall, details types.ExecuteDetails) (*types.FeeEstimate, error)
Execute(ctx context.Context, calls []types.FunctionCall, details types.ExecuteDetails) (*types.AddInvokeTransactionOutput, error)
Declare(ctx context.Context, classHash string, contract rpc.ContractClass, details types.ExecuteDetails) (types.AddDeclareResponse, error)
Deploy(ctx context.Context, classHash string, details types.ExecuteDetails) (*types.AddDeployResponse, error)
}
var _ account = &Account{}
type AccountPlugin interface {
PluginCall(calls []types.FunctionCall) (types.FunctionCall, error)
}
type ProviderType string
const (
ProviderRPC ProviderType = "rpc"
ProviderGateway ProviderType = "gateway"
)
type Account struct {
rpc *rpc.Provider
sequencer *gateway.GatewayProvider
provider ProviderType
chainId string
AccountAddress *felt.Felt
sender *felt.Felt
ks Keystore
version uint64
plugin AccountPlugin
}
type AccountOption struct {
AccountPlugin AccountPlugin
version uint64
}
type AccountOptionFunc func(*felt.Felt, *felt.Felt) (AccountOption, error)
func AccountVersion0(*felt.Felt, *felt.Felt) (AccountOption, error) {
return AccountOption{
version: uint64(0),
}, nil
}
func AccountVersion1(*felt.Felt, *felt.Felt) (AccountOption, error) {
return AccountOption{
version: uint64(1),
}, nil
}
func newAccount(sender, address *felt.Felt, ks Keystore, options ...AccountOptionFunc) (*Account, error) {
var accountPlugin AccountPlugin
version := uint64(0)
for _, o := range options {
opt, err := o(sender, address)
if err != nil {
return nil, err
}
if opt.version != 0 {
version = opt.version
}
if opt.AccountPlugin != nil {
if accountPlugin != nil {
return nil, errors.New("multiple plugins not supported")
}
accountPlugin = opt.AccountPlugin
}
}
return &Account{
AccountAddress: address,
version: version,
plugin: accountPlugin,
ks: ks,
sender: sender,
}, nil
}
func setAccountProvider(account *Account, provider interface{}) error {
switch p := provider.(type) {
case *rpc.Provider:
chainID, err := p.ChainID(context.Background())
if err != nil {
return err
}
account.chainId = chainID
account.provider = ProviderRPC
account.rpc = p
return nil
}
return errors.New("unsupported provider")
}
func NewRPCAccount[Provider *rpc.Provider](sender, address *felt.Felt, ks Keystore, provider Provider, options ...AccountOptionFunc) (*Account, error) {
account, err := newAccount(sender, address, ks, options...)
if err != nil {
return nil, err
}
err = setAccountProvider(account, provider)
return account, err
}
func NewGatewayAccount(sender, address *felt.Felt, ks Keystore, provider *gateway.GatewayProvider, options ...AccountOptionFunc) (*Account, error) {
account, err := newAccount(sender, address, ks, options...)
if err != nil {
return nil, err
}
chainID, err := provider.ChainID(context.Background())
if err != nil {
return nil, err
}
account.chainId = chainID
account.provider = ProviderGateway
account.sequencer = provider
return account, nil
}
func (account *Account) Call(ctx context.Context, call rpc.FunctionCall) ([]*felt.Felt, error) {
switch account.provider {
case ProviderRPC:
if account.rpc == nil {
return nil, ErrUnsupportedAccount
}
return account.rpc.Call(
ctx,
rpc.FunctionCall{
ContractAddress: call.ContractAddress,
EntryPointSelector: call.EntryPointSelector,
Calldata: call.Calldata},
rpc.WithBlockTag("latest"))
case ProviderGateway:
if account.sequencer == nil {
return nil, ErrUnsupportedAccount
}
resp, err := account.sequencer.Call(ctx, call, "latest")
if err != nil {
return nil, err
}
return utils.HexArrToFelt(resp)
}
return nil, ErrUnsupportedAccount
}
func (account *Account) TransactionHash(calls []types.FunctionCall, details types.ExecuteDetails) (*big.Int, error) {
var callArray []*big.Int
switch account.version {
case 1:
callArray = fmtCalldata(calls)
default:
return nil, fmt.Errorf("version %d unsupported", account.version)
}
cdHash, err := Curve.ComputeHashOnElements(callArray)
if err != nil {
return nil, err
}
var multiHashData []*big.Int
switch account.version {
case 1:
multiHashData = []*big.Int{
types.UTF8StrToBig(TRANSACTION_PREFIX),
big.NewInt(int64(account.version)),
account.AccountAddress.BigInt(big.NewInt(0)),
big.NewInt(0),
cdHash,
details.MaxFee,
types.UTF8StrToBig(account.chainId),
details.Nonce,
}
default:
return nil, fmt.Errorf("version %d unsupported", account.version)
}
return Curve.ComputeHashOnElements(multiHashData)
}
func (account *Account) estimateFeeHash(calls []types.FunctionCall, details types.ExecuteDetails, version *big.Int) (*big.Int, error) {
var callArray []*big.Int
switch account.version {
case 1:
callArray = fmtCalldata(calls)
default:
return nil, fmt.Errorf("version %d unsupported", account.version)
}
cdHash, err := Curve.ComputeHashOnElements(callArray)
if err != nil {
return nil, err
}
var multiHashData []*big.Int
switch account.version {
case 1:
multiHashData = []*big.Int{
types.UTF8StrToBig(TRANSACTION_PREFIX),
version,
account.AccountAddress.BigInt(big.NewInt(0)),
big.NewInt(0),
cdHash,
details.MaxFee,
types.UTF8StrToBig(account.chainId),
details.Nonce,
}
default:
return nil, fmt.Errorf("version %d unsupported", account.version)
}
return Curve.ComputeHashOnElements(multiHashData)
}
func (account *Account) Nonce(ctx context.Context) (*big.Int, error) {
switch account.version {
case 1:
switch account.provider {
case ProviderRPC:
nonce, err := account.rpc.Nonce(
ctx,
rpc.WithBlockTag("latest"),
account.AccountAddress,
)
if err != nil {
return nil, err
}
n, ok := big.NewInt(0).SetString(*nonce, 0)
if !ok {
return nil, errors.New("nonce error")
}
return n, nil
case ProviderGateway:
return account.sequencer.Nonce(ctx, account.AccountAddress.String(), "latest")
}
}
return nil, fmt.Errorf("version %d unsupported", account.version)
}
func (account *Account) prepFunctionInvokeRPC(ctx context.Context, messageType string, calls []types.FunctionCall, details types.ExecuteDetails) (*rpc.BroadcastedInvokeV1Transaction, error) {
if messageType != "invoke" && messageType != "estimate" {
return nil, errors.New("unsupported message type")
}
nonce := details.Nonce
var err error
if details.Nonce == nil {
nonce, err = account.Nonce(ctx)
if err != nil {
return nil, err
}
}
maxFee := MAX_FEE
if details.MaxFee != nil {
maxFee = details.MaxFee
}
if account.plugin != nil {
call, err := account.plugin.PluginCall(calls)
if err != nil {
return nil, err
}
calls = append([]types.FunctionCall{call}, calls...)
}
// starknet.go currently only supports V1
version := rpc.TransactionV1
var txHash *big.Int
switch messageType {
case "invoke":
// version = big.NewInt(int64(account.version))
txHash, err = account.TransactionHash(
calls,
types.ExecuteDetails{
Nonce: nonce,
MaxFee: maxFee,
},
)
if err != nil {
return nil, err
}
case "estimate":
if account.version == 1 {
// version, _ = big.NewInt(0).SetString("0x100000000000000000000000000000001", 0)
version = rpc.TransactionV1
}
versionBig, err := version.BigInt()
if err != nil {
return nil, err
}
txHash, err = account.estimateFeeHash(
calls,
types.ExecuteDetails{
Nonce: nonce,
MaxFee: maxFee,
},
versionBig,
)
if err != nil {
return nil, err
}
}
s1, s2, err := account.ks.Sign(ctx, account.sender.String(), txHash)
if err != nil {
return nil, err
}
switch account.version {
case 1:
calldata := fmtCalldataStrings(calls)
maxFeeFelt, err := new(felt.Felt).SetString(maxFee.String())
if err != nil {
return nil, err
}
calldataFelt, err := utils.HexArrToFelt(calldata)
if err != nil {
return nil, err
}
nonceFelt, err := utils.BigIntToFelt(nonce)
if err != nil {
return nil, err
}
s1Felt, err := utils.BigIntToFelt(s1)
if err != nil {
return nil, err
}
s2Felt, err := utils.BigIntToFelt(s2)
if err != nil {
return nil, err
}
return &rpc.BroadcastedInvokeV1Transaction{
BroadcastedTxnCommonProperties: rpc.BroadcastedTxnCommonProperties{
MaxFee: maxFeeFelt,
Version: version,
Signature: []*felt.Felt{s1Felt, s2Felt},
Nonce: nonceFelt,
},
SenderAddress: account.AccountAddress,
Calldata: calldataFelt,
}, nil
}
return nil, ErrUnsupportedAccount
}
func (account *Account) prepFunctionInvoke(ctx context.Context, messageType string, calls []types.FunctionCall, details types.ExecuteDetails) (*types.FunctionInvoke, error) {
if messageType != "invoke" && messageType != "estimate" {
return nil, errors.New("unsupported message type")
}
nonce := details.Nonce
var err error
if details.Nonce == nil {
nonce, err = account.Nonce(ctx)
if err != nil {
return nil, err
}
}
maxFee := MAX_FEE
if details.MaxFee != nil {
maxFee = details.MaxFee
}
if account.plugin != nil {
call, err := account.plugin.PluginCall(calls)
if err != nil {
return nil, err
}
calls = append([]types.FunctionCall{call}, calls...)
}
// version, _ := big.NewInt(0).SetString("0x100000000000000000000000000000000", 0)
version, _ := big.NewInt(0).SetString("0x0", 0)
var txHash *big.Int
switch messageType {
case "invoke":
version = big.NewInt(int64(account.version))
txHash, err = account.TransactionHash(
calls,
types.ExecuteDetails{
Nonce: nonce,
MaxFee: maxFee,
},
)
if err != nil {
return nil, err
}
case "estimate":
if account.version == 1 {
// version, _ = big.NewInt(0).SetString("0x100000000000000000000000000000001", 0)
version, _ = big.NewInt(0).SetString("0x1", 0)
}
txHash, err = account.estimateFeeHash(
calls,
types.ExecuteDetails{
Nonce: nonce,
MaxFee: maxFee,
},
version,
)
if err != nil {
return nil, err
}
}
s1, s2, err := account.ks.Sign(ctx, account.sender.String(), txHash)
if err != nil {
return nil, err
}
switch account.version {
case 1:
calldata := fmtCalldataStrings(calls)
return &types.FunctionInvoke{
MaxFee: maxFee,
Version: version,
Signature: types.Signature{s1, s2},
SenderAddress: account.AccountAddress,
Calldata: calldata,
Nonce: nonce,
}, nil
}
return nil, ErrUnsupportedAccount
}
func (account *Account) EstimateFee(ctx context.Context, calls []types.FunctionCall, details types.ExecuteDetails) (*types.FeeEstimate, error) {
switch account.provider {
case ProviderRPC:
call, err := account.prepFunctionInvokeRPC(ctx, "estimate", calls, details)
if err != nil {
return nil, err
}
switch account.version {
case 1:
estimates, err := account.rpc.EstimateFee(ctx, []rpc.BroadcastedTransaction{rpc.BroadcastedInvokeV1Transaction{
BroadcastedTxnCommonProperties: rpc.BroadcastedTxnCommonProperties{
MaxFee: call.MaxFee,
Version: rpc.TransactionV1,
Signature: call.Signature,
Nonce: call.Nonce,
Type: "INVOKE",
},
Calldata: call.Calldata,
SenderAddress: account.AccountAddress,
}}, rpc.WithBlockTag("latest"))
if err != nil {
return nil, err
}
return &types.FeeEstimate{types.NumAsHex(estimates[0].GasConsumed), types.NumAsHex(estimates[0].GasPrice), types.NumAsHex(estimates[0].OverallFee)}, nil
}
case ProviderGateway:
call, err := account.prepFunctionInvoke(ctx, "estimate", calls, details)
if err != nil {
return nil, err
}
return account.sequencer.EstimateFee(ctx, *call, "latest")
}
return nil, ErrUnsupportedAccount
}
func (account *Account) Execute(ctx context.Context, calls []types.FunctionCall, details types.ExecuteDetails) (*types.AddInvokeTransactionOutput, error) {
maxFee := details.MaxFee
if maxFee == nil {
estimate, err := account.EstimateFee(ctx, calls, details)
if err != nil {
return nil, err
}
fmt.Printf("fee %+v\n", estimate)
v, ok := big.NewInt(0).SetString(string(estimate.OverallFee), 0)
if !ok {
return nil, errors.New("could not match OverallFee to big.Int")
}
maxFee = v.Mul(v, big.NewInt(2))
}
details.MaxFee = maxFee
switch account.provider {
case ProviderRPC:
call, err := account.prepFunctionInvokeRPC(ctx, "invoke", calls, details)
if err != nil {
return nil, err
}
switch account.version {
case 1:
resp, err := account.rpc.AddInvokeTransaction(ctx, rpc.BroadcastedInvokeV1Transaction{
BroadcastedTxnCommonProperties: rpc.BroadcastedTxnCommonProperties{
MaxFee: call.MaxFee,
Version: rpc.TransactionV1,
Signature: call.Signature,
Nonce: call.Nonce,
Type: "INVOKE",
},
SenderAddress: account.AccountAddress,
Calldata: call.Calldata,
})
if err != nil {
return nil, err
}
return &types.AddInvokeTransactionOutput{resp.TransactionHash}, nil
}
case ProviderGateway:
call, err := account.prepFunctionInvoke(ctx, "invoke", calls, details)
if err != nil {
return nil, err
}
return account.sequencer.Invoke(
context.Background(),
*call,
)
}
return nil, ErrUnsupportedAccount
}
func (account *Account) Declare(ctx context.Context, classHash string, contract rpc.ContractClass, details types.ExecuteDetails) (types.AddDeclareResponse, error) {
switch account.provider {
case ProviderRPC:
panic("unsupported")
case ProviderGateway:
version := big.NewInt(1)
nonce := details.Nonce
var err error
if details.Nonce == nil {
nonce, err = account.Nonce(ctx)
if err != nil {
return types.AddDeclareResponse{}, err
}
}
// TODO: use max fee estimation instead
maxFee := MAX_FEE
if details.MaxFee != nil {
maxFee = details.MaxFee
}
// TODO: extract as declareHash
hash, _ := big.NewInt(0).SetString(classHash, 0)
calldataHash, err := Curve.ComputeHashOnElements([]*big.Int{hash})
if err != nil {
return types.AddDeclareResponse{}, err
}
var multiHashData []*big.Int
switch account.version {
case 1:
multiHashData = []*big.Int{
types.UTF8StrToBig(DECLARE_PREFIX),
version,
account.AccountAddress.BigInt(big.NewInt(0)),
big.NewInt(0),
calldataHash,
maxFee,
types.UTF8StrToBig(account.chainId),
nonce, // TODO: also include compiledClassHash for cairo 1.0?
}
default:
return types.AddDeclareResponse{}, fmt.Errorf("version %d unsupported", account.version)
}
txHash, err := Curve.ComputeHashOnElements(multiHashData)
// TODO: end extract as declareHash
if err != nil {
return types.AddDeclareResponse{}, err
}
s1, s2, err := account.ks.Sign(ctx, account.sender.String(), txHash)
if err != nil {
return types.AddDeclareResponse{}, err
}
signature := []string{}
signature = append(signature, s1.String())
signature = append(signature, s2.String())
request := gateway.DeclareRequest{
SenderAddress: account.AccountAddress,
Version: fmt.Sprintf("0x%x", version),
MaxFee: fmt.Sprintf("0x%x", maxFee),
Nonce: fmt.Sprintf("0x%x", nonce),
Signature: signature,
ContractClass: contract,
Type: "DECLARE",
}
return account.sequencer.Declare(ctx, contract, request)
}
return types.AddDeclareResponse{}, ErrUnsupportedAccount
}
// Deploys a declared contract using the UDC.
// TODO: use types.DeployRequest{} as input for salt + calldata (remove contract_definition)
func (account *Account) Deploy(ctx context.Context, classHash string, details types.ExecuteDetails) (*types.AddDeployResponse, error) {
// TODO: allow passing salt in
salt, err := Curve.GetRandomPrivateKey()
if err != nil {
return nil, err
}
unique := true
calldata := []string{}
uniqueInt := big.NewInt(0)
if unique {
uniqueInt = big.NewInt(1)
}
deployerAddress, err := utils.HexToFelt("0x41a78e741e5af2fec34b695679bc6891742439f7afb8484ecd7766661ad02bf") // UDC
if err != nil {
return nil, err
}
classhHashFelt, err := utils.HexToFelt(classHash)
if err != nil {
return nil, err
}
saltFelt, err := utils.BigIntToFelt(salt)
if err != nil {
return nil, err
}
uniqueIntFelt, err := utils.BigIntToFelt(uniqueInt)
if err != nil {
return nil, err
}
lenCalldataFelt, err := utils.HexToFelt(fmt.Sprintf("0x%x", len(calldata)))
if err != nil {
return nil, err
}
calldataFelt, err := utils.HexArrToFelt(calldata)
if err != nil {
return nil, err
}
tx, err := account.Execute(ctx, []types.FunctionCall{
{
ContractAddress: deployerAddress,
EntryPointSelector: types.GetSelectorFromNameFelt("deployContract"),
Calldata: append([]*felt.Felt{
classhHashFelt,
saltFelt,
uniqueIntFelt, // unique
lenCalldataFelt,
}, calldataFelt...),
},
}, details)
if err != nil {
return nil, err
}
// Calculate the resulting contract address
constructorCalldata := []*big.Int{}
for _, value := range calldata {
constructorCalldata = append(constructorCalldata, types.SNValToBN(value))
}
constructorCalldataHash, err := Curve.ComputeHashOnElements(constructorCalldata)
if err != nil {
return nil, err
}
if unique {
salt, err = Curve.PedersenHash([]*big.Int{
account.AccountAddress.BigInt(big.NewInt(0)),
salt,
})
if err != nil {
return nil, err
}
}
prefix := types.HexToBN("0x535441524b4e45545f434f4e54524143545f41444452455353")
contractAddress, err := Curve.ComputeHashOnElements([]*big.Int{
prefix, // CONTRACT_ADDRESS_PREFIX
deployerAddress.BigInt(big.NewInt(0)), // TODO: 0 if !unique
salt,
types.HexToBN(classHash),
constructorCalldataHash,
})
if err != nil {
return nil, err
}
return &types.AddDeployResponse{
TransactionHash: tx.TransactionHash.String(),
ContractAddress: fmt.Sprintf("0x%x", contractAddress),
}, nil
}