package morph import ( "errors" "fmt" "strconv" nns "github.com/nspcc-dev/neo-go/examples/nft-nd-nns" "github.com/nspcc-dev/neo-go/pkg/core/native" "github.com/nspcc-dev/neo-go/pkg/core/state" "github.com/nspcc-dev/neo-go/pkg/io" "github.com/nspcc-dev/neo-go/pkg/rpc/client" "github.com/nspcc-dev/neo-go/pkg/smartcontract" "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" "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" ) const defaultNameServiceDomainPrice = 10_0000_0000 const defaultNameServiceSysfee = 4000_0000 const defaultRegisterSysfee = 10_0000_0000 + defaultNameServiceDomainPrice func (c *initializeContext) setNNS() error { nnsCs, err := c.readContract(nnsContract) if err != nil { return err } ok, err := c.nnsRootRegistered(nnsCs.Hash) if err != nil { return err } else if !ok { bw := io.NewBufBinWriter() emit.AppCall(bw.BinWriter, nnsCs.Hash, "addRoot", callflag.All, "neofs") if err := c.sendCommitteeTx(bw.Bytes(), -1); err != nil { return fmt.Errorf("can't add domain root to NNS: %w", err) } if err := c.awaitTx(); err != nil { return err } } alphaCs, err := c.readContract(alphabetContract) if err != nil { return fmt.Errorf("can't read alphabet contract: %w", err) } 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, err := c.readContract(ctrName) if err != nil { return err } 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()) } return c.awaitTx() } func getAlphabetNNSDomain(i int) string { return alphabetContract + strconv.FormatUint(uint64(i), 10) + ".neofs" } func (c *initializeContext) nnsRegisterDomain(nnsHash, expectedHash util.Uint160, domain string) error { ok, err := c.Client.NNSIsAvailable(nnsHash, domain) if err != nil { return err } bw := io.NewBufBinWriter() if ok { emit.AppCall(bw.BinWriter, nnsHash, "register", callflag.All, domain, c.CommitteeAcc.Contract.ScriptHash(), "ops@nspcc.ru", int64(3600), int64(600), int64(604800), int64(3600)) emit.Opcodes(bw.BinWriter, opcode.ASSERT) } else { s, err := nnsResolveHash(c.Client, nnsHash, domain) if err != nil { return err } if s != expectedHash { return nil } } emit.AppCall(bw.BinWriter, nnsHash, "addRecord", callflag.All, domain, int64(nns.TXT), expectedHash.StringLE()) if bw.Err != nil { panic(bw.Err) } sysFee := int64(defaultRegisterSysfee + native.GASFactor) return c.sendCommitteeTx(bw.Bytes(), sysFee) } func (c *initializeContext) nnsRootRegistered(nnsHash util.Uint160) (bool, error) { params := []smartcontract.Parameter{{Type: smartcontract.StringType, Value: "name.neofs"}} res, err := c.Client.InvokeFunction(nnsHash, "isAvailable", params, nil) if err != nil { return false, err } return res.State == vm.HaltState.String(), nil } func nnsResolveHash(c *client.Client, nnsHash util.Uint160, domain string) (util.Uint160, error) { result, err := c.InvokeFunction(nnsHash, "resolve", []smartcontract.Parameter{ { Type: smartcontract.StringType, Value: domain, }, { Type: smartcontract.IntegerType, Value: int64(nns.TXT), }, }, nil) if err != nil { return util.Uint160{}, fmt.Errorf("`resolve`: %w", err) } if result.State != vm.HaltState.String() { return util.Uint160{}, fmt.Errorf("invocation failed: %s", result.FaultException) } if len(result.Stack) == 0 { return util.Uint160{}, errors.New("result stack is empty") } arr, ok := result.Stack[len(result.Stack)-1].Value().([]stackitem.Item) if !ok || len(arr) == 0 { return util.Uint160{}, errors.New("malformed response") } bs, err := arr[0].TryBytes() if err != nil { return util.Uint160{}, errors.New("malformed response") } return util.Uint160DecodeStringLE(string(bs)) }