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

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package morph
import (
"encoding/hex"
"errors"
"fmt"
"strconv"
"strings"
"time"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/rpcclient"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
"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/neofs-contract/nns"
morphClient "github.com/nspcc-dev/neofs-node/pkg/morph/client"
)
const defaultExpirationTime = 10 * 365 * 24 * time.Hour / time.Second
func (c *initializeContext) setNNS() error {
nnsCs, err := c.Client.GetContractStateByID(1)
if err != nil {
return err
}
ok, err := c.nnsRootRegistered(nnsCs.Hash, "neofs")
if err != nil {
return err
} else if !ok {
bw := io.NewBufBinWriter()
emit.AppCall(bw.BinWriter, nnsCs.Hash, "register", callflag.All,
"neofs", c.CommitteeAcc.Contract.ScriptHash(),
"ops@nspcc.ru", int64(3600), int64(600), int64(defaultExpirationTime), int64(3600))
emit.Opcodes(bw.BinWriter, opcode.ASSERT)
if err := c.sendCommitteeTx(bw.Bytes(), true); err != nil {
return fmt.Errorf("can't add domain root to NNS: %w", err)
}
if err := c.awaitTx(); err != nil {
return err
}
}
alphaCs := c.getContract(alphabetContract)
for i, acc := range c.Accounts {
alphaCs.Hash = state.CreateContractHash(acc.Contract.ScriptHash(), alphaCs.NEF.Checksum, alphaCs.Manifest.Name)
domain := getAlphabetNNSDomain(i)
if err := c.nnsRegisterDomain(nnsCs.Hash, alphaCs.Hash, domain); err != nil {
return err
}
c.Command.Printf("NNS: Set %s -> %s\n", domain, alphaCs.Hash.StringLE())
}
for _, ctrName := range contractList {
cs := c.getContract(ctrName)
domain := ctrName + ".neofs"
if err := c.nnsRegisterDomain(nnsCs.Hash, cs.Hash, domain); err != nil {
return err
}
c.Command.Printf("NNS: Set %s -> %s\n", domain, cs.Hash.StringLE())
}
groupKey := c.ContractWallet.Accounts[0].PrivateKey().PublicKey()
err = c.updateNNSGroup(nnsCs.Hash, groupKey)
if err != nil {
return err
}
c.Command.Printf("NNS: Set %s -> %s\n", morphClient.NNSGroupKeyName, hex.EncodeToString(groupKey.Bytes()))
return c.awaitTx()
}
func (c *initializeContext) updateNNSGroup(nnsHash util.Uint160, pub *keys.PublicKey) error {
bw := io.NewBufBinWriter()
needUpdate, needRegister, err := c.emitUpdateNNSGroupScript(bw, nnsHash, pub)
if !needUpdate || err != nil {
return err
}
script := bw.Bytes()
if needRegister {
w := io.NewBufBinWriter()
emit.Instruction(w.BinWriter, opcode.INITSSLOT, []byte{1})
wrapRegisterScriptWithPrice(w, nnsHash, script)
script = w.Bytes()
}
return c.sendCommitteeTx(script, true)
}
// emitUpdateNNSGroupScript emits script for updating group key stored in NNS.
// First return value is true iff the key is already there and nothing should be done.
// Second return value is true iff a domain registration code was emitted.
func (c *initializeContext) emitUpdateNNSGroupScript(bw *io.BufBinWriter, nnsHash util.Uint160, pub *keys.PublicKey) (bool, bool, error) {
isAvail, err := nnsIsAvailable(c.Client, nnsHash, morphClient.NNSGroupKeyName)
if err != nil {
return false, false, err
}
if !isAvail {
currentPub, err := nnsResolveKey(c.Client, nnsHash, morphClient.NNSGroupKeyName)
if err != nil {
return false, false, err
}
if pub.Equal(currentPub) {
return true, false, nil
}
}
if isAvail {
emit.AppCall(bw.BinWriter, nnsHash, "register", callflag.All,
morphClient.NNSGroupKeyName, c.CommitteeAcc.Contract.ScriptHash(),
"ops@nspcc.ru", int64(3600), int64(600), int64(defaultExpirationTime), int64(3600))
emit.Opcodes(bw.BinWriter, opcode.ASSERT)
}
emit.AppCall(bw.BinWriter, nnsHash, "deleteRecords", callflag.All, "group.neofs", int64(nns.TXT))
emit.AppCall(bw.BinWriter, nnsHash, "addRecord", callflag.All,
"group.neofs", int64(nns.TXT), hex.EncodeToString(pub.Bytes()))
return false, isAvail, nil
}
func getAlphabetNNSDomain(i int) string {
return alphabetContract + strconv.FormatUint(uint64(i), 10) + ".neofs"
}
// wrapRegisterScriptWithPrice wraps a given script with `getPrice`/`setPrice` calls for NNS.
// It is intended to be used for a single transaction, and not as a part of other scripts.
// It is assumed that script already contains static slot initialization code, the first one
// (with index 0) is used to store the price.
func wrapRegisterScriptWithPrice(w *io.BufBinWriter, nnsHash util.Uint160, s []byte) {
if len(s) == 0 {
return
}
emit.AppCall(w.BinWriter, nnsHash, "getPrice", callflag.All)
emit.Opcodes(w.BinWriter, opcode.STSFLD0)
emit.AppCall(w.BinWriter, nnsHash, "setPrice", callflag.All, 1)
w.WriteBytes(s)
emit.Opcodes(w.BinWriter, opcode.LDSFLD0, opcode.PUSH1, opcode.PACK)
emit.AppCallNoArgs(w.BinWriter, nnsHash, "setPrice", callflag.All)
if w.Err != nil {
panic(fmt.Errorf("BUG: can't wrap register script: %w", w.Err))
}
}
func (c *initializeContext) nnsRegisterDomainScript(nnsHash, expectedHash util.Uint160, domain string) ([]byte, bool, error) {
ok, err := nnsIsAvailable(c.Client, nnsHash, domain)
if err != nil {
return nil, false, err
}
if ok {
bw := io.NewBufBinWriter()
emit.AppCall(bw.BinWriter, nnsHash, "register", callflag.All,
domain, c.CommitteeAcc.Contract.ScriptHash(),
"ops@nspcc.ru", int64(3600), int64(600), int64(defaultExpirationTime), int64(3600))
emit.Opcodes(bw.BinWriter, opcode.ASSERT)
if bw.Err != nil {
panic(bw.Err)
}
return bw.Bytes(), false, nil
}
s, err := nnsResolveHash(c.Client, nnsHash, domain)
if err != nil {
return nil, false, err
}
return nil, s == expectedHash, nil
}
func (c *initializeContext) nnsRegisterDomain(nnsHash, expectedHash util.Uint160, domain string) error {
script, ok, err := c.nnsRegisterDomainScript(nnsHash, expectedHash, domain)
if ok || err != nil {
return err
}
w := io.NewBufBinWriter()
emit.Instruction(w.BinWriter, opcode.INITSSLOT, []byte{1})
wrapRegisterScriptWithPrice(w, nnsHash, script)
emit.AppCall(w.BinWriter, nnsHash, "deleteRecords", callflag.All, domain, int64(nns.TXT))
emit.AppCall(w.BinWriter, nnsHash, "addRecord", callflag.All,
domain, int64(nns.TXT), expectedHash.StringLE())
emit.AppCall(w.BinWriter, nnsHash, "addRecord", callflag.All,
domain, int64(nns.TXT), address.Uint160ToString(expectedHash))
return c.sendCommitteeTx(w.Bytes(), true)
}
func (c *initializeContext) nnsRootRegistered(nnsHash util.Uint160, zone string) (bool, error) {
params := []interface{}{"name." + zone}
res, err := invokeFunction(c.Client, nnsHash, "isAvailable", params, nil)
if err != nil {
return false, err
}
return res.State == vmstate.Halt.String(), nil
}
var errMissingNNSRecord = errors.New("missing NNS record")
// Returns errMissingNNSRecord if invocation fault exception contains "token not found".
func nnsResolveHash(c Client, nnsHash util.Uint160, domain string) (util.Uint160, error) {
item, err := nnsResolve(c, nnsHash, domain)
if err != nil {
return util.Uint160{}, err
}
return parseNNSResolveResult(item)
}
func nnsResolve(c Client, nnsHash util.Uint160, domain string) (stackitem.Item, error) {
result, err := invokeFunction(c, nnsHash, "resolve", []interface{}{domain, int64(nns.TXT)}, nil)
if err != nil {
return nil, fmt.Errorf("`resolve`: %w", err)
}
if result.State != vmstate.Halt.String() {
if strings.Contains(result.FaultException, "token not found") {
return nil, errMissingNNSRecord
}
return nil, fmt.Errorf("invocation failed: %s", result.FaultException)
}
if len(result.Stack) == 0 {
return nil, errors.New("result stack is empty")
}
return result.Stack[len(result.Stack)-1], nil
}
func nnsResolveKey(c Client, nnsHash util.Uint160, domain string) (*keys.PublicKey, error) {
item, err := nnsResolve(c, nnsHash, domain)
if err != nil {
return nil, err
}
arr, ok := item.Value().([]stackitem.Item)
if !ok || len(arr) == 0 {
return nil, errors.New("NNS record is missing")
}
bs, err := arr[0].TryBytes()
if err != nil {
return nil, errors.New("malformed response")
}
return keys.NewPublicKeyFromString(string(bs))
}
// parseNNSResolveResult parses the result of resolving NNS record.
// It works with multiple formats (corresponding to multiple NNS versions).
// If array of hashes is provided, it returns only the first one.
func parseNNSResolveResult(res stackitem.Item) (util.Uint160, error) {
arr, ok := res.Value().([]stackitem.Item)
if !ok {
arr = []stackitem.Item{res}
}
if _, ok := res.Value().(stackitem.Null); ok || len(arr) == 0 {
return util.Uint160{}, errors.New("NNS record is missing")
}
for i := range arr {
bs, err := arr[i].TryBytes()
if err != nil {
continue
}
h, err := util.Uint160DecodeStringLE(string(bs))
if err == nil {
return h, nil
}
h, err = address.StringToUint160(string(bs))
if err == nil {
return h, nil
}
}
return util.Uint160{}, errors.New("no valid hashes are found")
}
var errNNSIsAvailableInvalid = errors.New("`isAvailable`: invalid response")
func nnsIsAvailable(c Client, nnsHash util.Uint160, name string) (bool, error) {
switch ct := c.(type) {
case *rpcclient.Client:
return ct.NNSIsAvailable(nnsHash, name)
default:
res, err := invokeFunction(c, nnsHash, "isAvailable", []interface{}{name}, nil)
if err != nil {
return false, err
}
if len(res.Stack) == 0 {
return false, errNNSIsAvailableInvalid
}
b, err := res.Stack[0].TryBool()
if err != nil {
return b, errNNSIsAvailableInvalid
}
return b, nil
}
}