frostfs-node/cmd/neofs-adm/internal/modules/morph/local_client.go

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package morph
import (
"bytes"
"crypto/elliptic"
"errors"
"fmt"
"os"
"sort"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/chaindump"
"github.com/nspcc-dev/neo-go/pkg/core/fee"
"github.com/nspcc-dev/neo-go/pkg/core/native/noderoles"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/network/payload"
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/nspcc-dev/neo-go/pkg/vm/vmstate"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/spf13/viper"
"go.uber.org/zap"
)
type localClient struct {
bc *core.Blockchain
transactions []*transaction.Transaction
dumpPath string
accounts []*wallet.Account
}
func newLocalClient(v *viper.Viper, wallets []*wallet.Wallet) (*localClient, error) {
cfg, err := config.LoadFile(v.GetString(protoConfigPath))
if err != nil {
return nil, err
}
bc, err := core.NewBlockchain(storage.NewMemoryStore(), cfg.ProtocolConfiguration, zap.NewNop())
if err != nil {
return nil, err
}
defer func() { go bc.Run() }()
m := smartcontract.GetDefaultHonestNodeCount(cfg.ProtocolConfiguration.ValidatorsCount)
accounts := make([]*wallet.Account, len(wallets))
for i := range accounts {
accounts[i], err = getWalletAccount(wallets[i], consensusAccountName)
if err != nil {
return nil, err
}
}
indexMap := make(map[string]int)
for i, pub := range cfg.ProtocolConfiguration.StandbyCommittee {
indexMap[pub] = i
}
sort.Slice(accounts, func(i, j int) bool {
pi := accounts[i].PrivateKey().PublicKey().Bytes()
pj := accounts[j].PrivateKey().PublicKey().Bytes()
return indexMap[string(pi)] < indexMap[string(pj)]
})
sort.Slice(accounts[:cfg.ProtocolConfiguration.ValidatorsCount], func(i, j int) bool {
pi := accounts[i].PrivateKey().PublicKey().Bytes()
pj := accounts[j].PrivateKey().PublicKey().Bytes()
return bytes.Compare(pi, pj) == -1
})
return &localClient{
bc: bc,
dumpPath: v.GetString(localDumpFlag),
accounts: accounts[:m],
}, nil
}
func (l *localClient) GetBlockCount() (uint32, error) {
return l.bc.BlockHeight(), nil
}
func (l *localClient) GetContractStateByID(id int32) (*state.Contract, error) {
h, err := l.bc.GetContractScriptHash(id)
if err != nil {
return nil, err
}
return l.GetContractStateByHash(h)
}
func (l *localClient) GetContractStateByHash(h util.Uint160) (*state.Contract, error) {
if cs := l.bc.GetContractState(h); cs != nil {
return cs, nil
}
return nil, storage.ErrKeyNotFound
}
func (l *localClient) GetNativeContracts() ([]state.NativeContract, error) {
return l.bc.GetNatives(), nil
}
func (l *localClient) GetNetwork() (netmode.Magic, error) {
return l.bc.GetConfig().Magic, nil
}
func (l *localClient) GetApplicationLog(h util.Uint256, t *trigger.Type) (*result.ApplicationLog, error) {
aer, err := l.bc.GetAppExecResults(h, *t)
if err != nil {
return nil, err
}
a := result.NewApplicationLog(h, aer, *t)
return &a, nil
}
func (l *localClient) CreateTxFromScript(script []byte, acc *wallet.Account, sysFee int64, netFee int64, cosigners []client.SignerAccount) (*transaction.Transaction, error) {
signers, accounts, err := getSigners(acc, cosigners)
if err != nil {
return nil, fmt.Errorf("failed to construct tx signers: %w", err)
}
if sysFee < 0 {
res, err := l.InvokeScript(script, signers)
if err != nil {
return nil, fmt.Errorf("can't add system fee to transaction: %w", err)
}
if res.State != "HALT" {
return nil, fmt.Errorf("can't add system fee to transaction: bad vm state: %s due to an error: %s", res.State, res.FaultException)
}
sysFee = res.GasConsumed
}
tx := transaction.New(script, sysFee)
tx.Signers = signers
tx.ValidUntilBlock = l.bc.BlockHeight() + 2
err = l.AddNetworkFee(tx, netFee, accounts...)
if err != nil {
return nil, fmt.Errorf("failed to add network fee: %w", err)
}
return tx, nil
}
func (l *localClient) GetCommittee() (keys.PublicKeys, error) {
// not used by `morph init` command
panic("unexpected call")
}
func (l *localClient) InvokeFunction(_ util.Uint160, _ string, _ []smartcontract.Parameter, _ []transaction.Signer) (*result.Invoke, error) {
// not used by `morph init` command
panic("unexpected call")
}
func (l *localClient) CalculateNotaryFee(_ uint8) (int64, error) {
// not used by `morph init` command
panic("unexpected call")
}
func (l *localClient) SignAndPushP2PNotaryRequest(_ *transaction.Transaction, _ []byte, _ int64, _ int64, _ uint32, _ *wallet.Account) (*payload.P2PNotaryRequest, error) {
// not used by `morph init` command
panic("unexpected call")
}
func (l *localClient) SignAndPushInvocationTx(_ []byte, _ *wallet.Account, _ int64, _ fixedn.Fixed8, _ []client.SignerAccount) (util.Uint256, error) {
// not used by `morph init` command
panic("unexpected call")
}
// AddNetworkFee adds network fee for each witness script and optional extra
// network fee to transaction. `accs` is an array signer's accounts.
// Copied from neo-go with minor corrections (no need to support contract signers):
// https://github.com/nspcc-dev/neo-go/blob/6ff11baa1b9e4c71ef0d1de43b92a8c541ca732c/pkg/rpc/client/rpc.go#L960
func (l *localClient) AddNetworkFee(tx *transaction.Transaction, extraFee int64, accs ...*wallet.Account) error {
if len(tx.Signers) != len(accs) {
return errors.New("number of signers must match number of scripts")
}
size := io.GetVarSize(tx)
ef := l.bc.GetBaseExecFee()
for i := range tx.Signers {
netFee, sizeDelta := fee.Calculate(ef, accs[i].Contract.Script)
tx.NetworkFee += netFee
size += sizeDelta
}
tx.NetworkFee += int64(size)*l.bc.FeePerByte() + extraFee
return nil
}
// getSigners returns an array of transaction signers and corresponding accounts from
// given sender and cosigners. If cosigners list already contains sender, the sender
// will be placed at the start of the list.
// Copied from neo-go with minor corrections:
// https://github.com/nspcc-dev/neo-go/blob/6ff11baa1b9e4c71ef0d1de43b92a8c541ca732c/pkg/rpc/client/rpc.go#L735
func getSigners(sender *wallet.Account, cosigners []client.SignerAccount) ([]transaction.Signer, []*wallet.Account, error) {
var (
signers []transaction.Signer
accounts []*wallet.Account
)
from := sender.Contract.ScriptHash()
s := transaction.Signer{
Account: from,
Scopes: transaction.None,
}
for _, c := range cosigners {
if c.Signer.Account == from {
s = c.Signer
continue
}
signers = append(signers, c.Signer)
accounts = append(accounts, c.Account)
}
signers = append([]transaction.Signer{s}, signers...)
accounts = append([]*wallet.Account{sender}, accounts...)
return signers, accounts, nil
}
func (l *localClient) NEP17BalanceOf(h util.Uint160, acc util.Uint160) (int64, error) {
res, err := invokeFunction(l, h, "balanceOf", []interface{}{acc}, nil)
if err != nil {
return 0, err
}
if res.State != vmstate.Halt.String() || len(res.Stack) == 0 {
return 0, fmt.Errorf("`balance`: invalid response (empty: %t): %s",
len(res.Stack) == 0, res.FaultException)
}
bi, err := res.Stack[0].TryInteger()
if err != nil || !bi.IsInt64() {
return 0, fmt.Errorf("`balance`: invalid response")
}
return bi.Int64(), nil
}
func (l *localClient) InvokeScript(script []byte, signers []transaction.Signer) (*result.Invoke, error) {
lastBlock, err := l.bc.GetBlock(l.bc.CurrentBlockHash())
if err != nil {
return nil, err
}
tx := transaction.New(script, 0)
tx.Signers = signers
tx.ValidUntilBlock = l.bc.BlockHeight() + 2
ic := l.bc.GetTestVM(trigger.Application, tx, &block.Block{
Header: block.Header{
Index: lastBlock.Index + 1,
Timestamp: lastBlock.Timestamp + 1,
},
})
ic.VM.GasLimit = 100_0000_0000
ic.VM.LoadScriptWithFlags(script, callflag.All)
var errStr string
if err := ic.VM.Run(); err != nil {
errStr = err.Error()
}
return &result.Invoke{
State: ic.VM.State().String(),
GasConsumed: ic.VM.GasConsumed(),
Script: script,
Stack: ic.VM.Estack().ToArray(),
FaultException: errStr,
}, nil
}
func (l *localClient) SendRawTransaction(tx *transaction.Transaction) (util.Uint256, error) {
l.transactions = append(l.transactions, tx)
return tx.Hash(), nil
}
func (l *localClient) putTransactions() error {
// 1. Prepare new block.
lastBlock, err := l.bc.GetBlock(l.bc.CurrentBlockHash())
if err != nil {
panic(err)
}
defer func() { l.transactions = l.transactions[:0] }()
b := &block.Block{
Header: block.Header{
NextConsensus: l.accounts[0].Contract.ScriptHash(),
Script: transaction.Witness{
VerificationScript: l.accounts[0].Contract.Script,
},
Timestamp: lastBlock.Timestamp + 1,
},
Transactions: l.transactions,
}
if l.bc.GetConfig().StateRootInHeader {
b.StateRootEnabled = true
b.PrevStateRoot = l.bc.GetStateModule().CurrentLocalStateRoot()
}
b.PrevHash = lastBlock.Hash()
b.Index = lastBlock.Index + 1
b.RebuildMerkleRoot()
// 2. Sign prepared block.
var invocationScript []byte
magic := l.bc.GetConfig().Magic
for _, acc := range l.accounts {
sign := acc.PrivateKey().SignHashable(uint32(magic), b)
invocationScript = append(invocationScript, byte(opcode.PUSHDATA1), 64)
invocationScript = append(invocationScript, sign...)
}
b.Script.InvocationScript = invocationScript
// 3. Persist block.
return l.bc.AddBlock(b)
}
func invokeFunction(c Client, h util.Uint160, method string, parameters []interface{}, signers []transaction.Signer) (*result.Invoke, error) {
w := io.NewBufBinWriter()
emit.Array(w.BinWriter, parameters...)
emit.AppCallNoArgs(w.BinWriter, h, method, callflag.All)
if w.Err != nil {
panic(fmt.Sprintf("BUG: invalid parameters for '%s': %v", method, w.Err))
}
return c.InvokeScript(w.Bytes(), signers)
}
var errGetDesignatedByRoleResponse = errors.New("`getDesignatedByRole`: invalid response")
func getDesignatedByRole(c Client, h util.Uint160, role noderoles.Role, u uint32) (keys.PublicKeys, error) {
res, err := invokeFunction(c, h, "getDesignatedByRole", []interface{}{int64(role), int64(u)}, nil)
if err != nil {
return nil, err
}
if res.State != vmstate.Halt.String() || len(res.Stack) == 0 {
return nil, errGetDesignatedByRoleResponse
}
arr, ok := res.Stack[0].Value().([]stackitem.Item)
if !ok {
return nil, errGetDesignatedByRoleResponse
}
pubs := make(keys.PublicKeys, len(arr))
for i := range arr {
bs, err := arr[i].TryBytes()
if err != nil {
return nil, errGetDesignatedByRoleResponse
}
pubs[i], err = keys.NewPublicKeyFromBytes(bs, elliptic.P256())
if err != nil {
return nil, errGetDesignatedByRoleResponse
}
}
return pubs, nil
}
func (l *localClient) dump() (err error) {
defer l.bc.Close()
f, err := os.Create(l.dumpPath)
if err != nil {
return err
}
defer func() {
closeErr := f.Close()
if err == nil && closeErr != nil {
err = closeErr
}
}()
w := io.NewBinWriterFromIO(f)
err = chaindump.Dump(l.bc, w, 0, l.bc.BlockHeight())
return
}