mirror of
https://github.com/nspcc-dev/neo-go.git
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000109bfd1
Added missing function from smart-contract manifest. Close #2732 Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
549 lines
20 KiB
Go
549 lines
20 KiB
Go
// Package nns provide RPC wrappers for the non-native NNS contract.
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// This is Neo N3 NNS contract wrapper, the source code of the contract can be found here:
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// https://github.com/neo-project/non-native-contracts/blob/8d72b92e5e5705d763232bcc24784ced0fb8fc87/src/NameService/NameService.cs
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package nns
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import (
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"errors"
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"fmt"
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"math/big"
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"unicode/utf8"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/nep11"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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// MaxNameLength is the max length of domain name.
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const MaxNameLength = 255
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// SetAdminEvent represents "SetAdmin" event emitted by the contract.
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type SetAdminEvent struct {
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Name string
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OldAdmin util.Uint160
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NewAdmin util.Uint160
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}
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// RenewEvent represents "Renew" event emitted by the contract.
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type RenewEvent struct {
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Name string
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OldExpiration *big.Int
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NewExpiration *big.Int
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}
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// Invoker is used by ContractReader to call various safe methods.
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type Invoker interface {
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nep11.Invoker
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}
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// Actor is used by Contract to call state-changing methods.
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type Actor interface {
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Invoker
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nep11.Actor
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MakeCall(contract util.Uint160, method string, params ...any) (*transaction.Transaction, error)
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MakeRun(script []byte) (*transaction.Transaction, error)
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MakeUnsignedCall(contract util.Uint160, method string, attrs []transaction.Attribute, params ...any) (*transaction.Transaction, error)
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MakeUnsignedRun(script []byte, attrs []transaction.Attribute) (*transaction.Transaction, error)
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SendCall(contract util.Uint160, method string, params ...any) (util.Uint256, uint32, error)
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SendRun(script []byte) (util.Uint256, uint32, error)
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}
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// ContractReader implements safe contract methods.
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type ContractReader struct {
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nep11.NonDivisibleReader
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invoker Invoker
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hash util.Uint160
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}
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// Contract provides full NeoNameService interface, both safe and state-changing methods.
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type Contract struct {
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ContractReader
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nep11.BaseWriter
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actor Actor
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hash util.Uint160
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}
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// NewReader creates an instance of ContractReader using provided contract hash and the given Invoker.
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func NewReader(invoker Invoker, hash util.Uint160) *ContractReader {
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return &ContractReader{*nep11.NewNonDivisibleReader(invoker, hash), invoker, hash}
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}
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// New creates an instance of Contract using provided contract hash and the given Actor.
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func New(actor Actor, hash util.Uint160) *Contract {
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var nep11ndt = nep11.NewNonDivisible(actor, hash)
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return &Contract{ContractReader{nep11ndt.NonDivisibleReader, actor, hash}, nep11ndt.BaseWriter, actor, hash}
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}
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// Roots invokes `roots` method of contract.
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func (c *ContractReader) Roots() (*RootIterator, error) {
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sess, iter, err := unwrap.SessionIterator(c.invoker.Call(c.hash, "roots"))
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if err != nil {
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return nil, err
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}
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return &RootIterator{
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client: c.invoker,
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iterator: iter,
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session: sess,
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}, nil
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}
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// RootsExpanded is similar to Roots (uses the same contract
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// method), but can be useful if the server used doesn't support sessions and
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// doesn't expand iterators. It creates a script that will get the specified
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// number of result items from the iterator right in the VM and return them to
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// you. It's only limited by VM stack and GAS available for RPC invocations.
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func (c *ContractReader) RootsExpanded(_numOfIteratorItems int) ([]string, error) {
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arr, err := unwrap.Array(c.invoker.CallAndExpandIterator(c.hash, "roots", _numOfIteratorItems))
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if err != nil {
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return nil, err
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}
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return itemsToRoots(arr)
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}
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// GetPrice invokes `getPrice` method of contract.
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func (c *ContractReader) GetPrice(length uint8) (*big.Int, error) {
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return unwrap.BigInt(c.invoker.Call(c.hash, "getPrice", length))
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}
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// IsAvailable invokes `isAvailable` method of contract.
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func (c *ContractReader) IsAvailable(name string) (bool, error) {
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return unwrap.Bool(c.invoker.Call(c.hash, "isAvailable", name))
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}
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// GetRecord invokes `getRecord` method of contract.
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func (c *ContractReader) GetRecord(name string, typev RecordType) (string, error) {
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return unwrap.UTF8String(c.invoker.Call(c.hash, "getRecord", name, typev))
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}
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// GetAllRecords invokes `getAllRecords` method of contract.
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func (c *ContractReader) GetAllRecords(name string) (*RecordIterator, error) {
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sess, iter, err := unwrap.SessionIterator(c.invoker.Call(c.hash, "getAllRecords", name))
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if err != nil {
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return nil, err
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}
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return &RecordIterator{
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client: c.invoker,
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iterator: iter,
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session: sess,
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}, nil
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}
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// GetAllRecordsExpanded is similar to GetAllRecords (uses the same contract
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// method), but can be useful if the server used doesn't support sessions and
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// doesn't expand iterators. It creates a script that will get the specified
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// number of result items from the iterator right in the VM and return them to
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// you. It's only limited by VM stack and GAS available for RPC invocations.
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func (c *ContractReader) GetAllRecordsExpanded(name string, _numOfIteratorItems int) ([]RecordState, error) {
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arr, err := unwrap.Array(c.invoker.CallAndExpandIterator(c.hash, "getAllRecords", _numOfIteratorItems, name))
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if err != nil {
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return nil, err
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}
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return itemsToRecords(arr)
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}
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// Resolve invokes `resolve` method of contract.
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func (c *ContractReader) Resolve(name string, typev RecordType) (string, error) {
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return unwrap.UTF8String(c.invoker.Call(c.hash, "resolve", name, int64(typev)))
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}
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// Update creates a transaction invoking `update` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) Update(nef []byte, manifest string) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "update", nef, manifest)
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}
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// UpdateTransaction creates a transaction invoking `update` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) UpdateTransaction(nef []byte, manifest string) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "update", nef, manifest)
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}
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// UpdateUnsigned creates a transaction invoking `update` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) UpdateUnsigned(nef []byte, manifest string) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "update", nil, nef, manifest)
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}
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// AddRoot creates a transaction invoking `addRoot` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) AddRoot(root string) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "addRoot", root)
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}
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// AddRootTransaction creates a transaction invoking `addRoot` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) AddRootTransaction(root string) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "addRoot", root)
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}
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// AddRootUnsigned creates a transaction invoking `addRoot` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) AddRootUnsigned(root string) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "addRoot", nil, root)
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}
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// SetPrice creates a transaction invoking `setPrice` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) SetPrice(priceList []int64) (util.Uint256, uint32, error) {
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anyPriceList := make([]any, len(priceList))
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for i, price := range priceList {
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anyPriceList[i] = price
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}
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return c.actor.SendCall(c.hash, "setPrice", anyPriceList)
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}
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// SetPriceTransaction creates a transaction invoking `setPrice` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) SetPriceTransaction(priceList []int64) (*transaction.Transaction, error) {
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anyPriceList := make([]any, len(priceList))
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for i, price := range priceList {
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anyPriceList[i] = price
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}
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return c.actor.MakeCall(c.hash, "setPrice", anyPriceList)
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}
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// SetPriceUnsigned creates a transaction invoking `setPrice` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) SetPriceUnsigned(priceList []int64) (*transaction.Transaction, error) {
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anyPriceList := make([]any, len(priceList))
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for i, price := range priceList {
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anyPriceList[i] = price
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}
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return c.actor.MakeUnsignedCall(c.hash, "setPrice", nil, anyPriceList)
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}
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func (c *Contract) scriptForRegister(name string, owner util.Uint160) ([]byte, error) {
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return smartcontract.CreateCallWithAssertScript(c.hash, "register", name, owner)
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}
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// Register creates a transaction invoking `register` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) Register(name string, owner util.Uint160) (util.Uint256, uint32, error) {
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script, err := c.scriptForRegister(name, owner)
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if err != nil {
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return util.Uint256{}, 0, err
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}
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return c.actor.SendRun(script)
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}
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// RegisterTransaction creates a transaction invoking `register` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) RegisterTransaction(name string, owner util.Uint160) (*transaction.Transaction, error) {
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script, err := c.scriptForRegister(name, owner)
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if err != nil {
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return nil, err
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}
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return c.actor.MakeRun(script)
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}
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// RegisterUnsigned creates a transaction invoking `register` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) RegisterUnsigned(name string, owner util.Uint160) (*transaction.Transaction, error) {
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script, err := c.scriptForRegister(name, owner)
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if err != nil {
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return nil, err
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}
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return c.actor.MakeUnsignedRun(script, nil)
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}
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// Renew creates a transaction invoking `renew` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) Renew(name string) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "renew", name)
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}
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// RenewTransaction creates a transaction invoking `renew` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) RenewTransaction(name string) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "renew", name)
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}
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// RenewUnsigned creates a transaction invoking `renew` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) RenewUnsigned(name string) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "renew", nil, name)
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}
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// Renew2 creates a transaction invoking `renew` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) Renew2(name string, years int64) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "renew", name, years)
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}
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// Renew2Transaction creates a transaction invoking `renew` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) Renew2Transaction(name string, years int64) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "renew", name, years)
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}
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// Renew2Unsigned creates a transaction invoking `renew` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) Renew2Unsigned(name string, years int64) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "renew", nil, name, years)
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}
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// SetAdmin creates a transaction invoking `setAdmin` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) SetAdmin(name string, admin util.Uint160) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "setAdmin", name, admin)
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}
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// SetAdminTransaction creates a transaction invoking `setAdmin` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) SetAdminTransaction(name string, admin util.Uint160) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "setAdmin", name, admin)
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}
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// SetAdminUnsigned creates a transaction invoking `setAdmin` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) SetAdminUnsigned(name string, admin util.Uint160) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "setAdmin", nil, name, admin)
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}
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// SetRecord creates a transaction invoking `setRecord` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) SetRecord(name string, typev RecordType, data string) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "setRecord", name, typev, data)
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}
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// SetRecordTransaction creates a transaction invoking `setRecord` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) SetRecordTransaction(name string, typev RecordType, data string) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "setRecord", name, typev, data)
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}
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// SetRecordUnsigned creates a transaction invoking `setRecord` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) SetRecordUnsigned(name string, typev RecordType, data string) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "setRecord", nil, name, typev, data)
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}
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// DeleteRecord creates a transaction invoking `deleteRecord` method of the contract.
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// This transaction is signed and immediately sent to the network.
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// The values returned are its hash, ValidUntilBlock value and error if any.
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func (c *Contract) DeleteRecord(name string, typev RecordType) (util.Uint256, uint32, error) {
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return c.actor.SendCall(c.hash, "deleteRecord", name, typev)
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}
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// DeleteRecordTransaction creates a transaction invoking `deleteRecord` method of the contract.
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// This transaction is signed, but not sent to the network, instead it's
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// returned to the caller.
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func (c *Contract) DeleteRecordTransaction(name string, typev RecordType) (*transaction.Transaction, error) {
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return c.actor.MakeCall(c.hash, "deleteRecord", name, typev)
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}
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// DeleteRecordUnsigned creates a transaction invoking `deleteRecord` method of the contract.
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// This transaction is not signed, it's simply returned to the caller.
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// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
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// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
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func (c *Contract) DeleteRecordUnsigned(name string, typev RecordType) (*transaction.Transaction, error) {
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return c.actor.MakeUnsignedCall(c.hash, "deleteRecord", nil, name, typev)
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}
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// SetAdminEventsFromApplicationLog retrieves a set of all emitted events
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// with "SetAdmin" name from the provided [result.ApplicationLog].
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func SetAdminEventsFromApplicationLog(log *result.ApplicationLog) ([]*SetAdminEvent, error) {
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if log == nil {
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return nil, errors.New("nil application log")
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}
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var res []*SetAdminEvent
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for i, ex := range log.Executions {
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for j, e := range ex.Events {
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if e.Name != "SetAdmin" {
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continue
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}
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event := new(SetAdminEvent)
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err := event.FromStackItem(e.Item)
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if err != nil {
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return nil, fmt.Errorf("failed to deserialize SetAdminEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
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}
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res = append(res, event)
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}
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}
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return res, nil
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}
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// FromStackItem converts provided [stackitem.Array] to SetAdminEvent or
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// returns an error if it's not possible to do to so.
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func (e *SetAdminEvent) FromStackItem(item *stackitem.Array) error {
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if item == nil {
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return errors.New("nil item")
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}
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arr, ok := item.Value().([]stackitem.Item)
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if !ok {
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return errors.New("not an array")
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}
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if len(arr) != 3 {
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return errors.New("wrong number of structure elements")
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}
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var (
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index = -1
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err error
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)
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index++
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e.Name, err = func(item stackitem.Item) (string, error) {
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b, err := item.TryBytes()
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|
if err != nil {
|
|
return "", err
|
|
}
|
|
if !utf8.Valid(b) {
|
|
return "", errors.New("not a UTF-8 string")
|
|
}
|
|
return string(b), nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field Name: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.OldAdmin, err = func(item stackitem.Item) (util.Uint160, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
u, err := util.Uint160DecodeBytesBE(b)
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
return u, nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field OldAdmin: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.NewAdmin, err = func(item stackitem.Item) (util.Uint160, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
u, err := util.Uint160DecodeBytesBE(b)
|
|
if err != nil {
|
|
return util.Uint160{}, err
|
|
}
|
|
return u, nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field NewAdmin: %w", err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// RenewEventsFromApplicationLog retrieves a set of all emitted events
|
|
// with "Renew" name from the provided [result.ApplicationLog].
|
|
func RenewEventsFromApplicationLog(log *result.ApplicationLog) ([]*RenewEvent, error) {
|
|
if log == nil {
|
|
return nil, errors.New("nil application log")
|
|
}
|
|
|
|
var res []*RenewEvent
|
|
for i, ex := range log.Executions {
|
|
for j, e := range ex.Events {
|
|
if e.Name != "Renew" {
|
|
continue
|
|
}
|
|
event := new(RenewEvent)
|
|
err := event.FromStackItem(e.Item)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to deserialize RenewEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
|
|
}
|
|
res = append(res, event)
|
|
}
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
// FromStackItem converts provided [stackitem.Array] to RenewEvent or
|
|
// returns an error if it's not possible to do to so.
|
|
func (e *RenewEvent) FromStackItem(item *stackitem.Array) error {
|
|
if item == nil {
|
|
return errors.New("nil item")
|
|
}
|
|
arr, ok := item.Value().([]stackitem.Item)
|
|
if !ok {
|
|
return errors.New("not an array")
|
|
}
|
|
if len(arr) != 3 {
|
|
return errors.New("wrong number of structure elements")
|
|
}
|
|
|
|
var (
|
|
index = -1
|
|
err error
|
|
)
|
|
index++
|
|
e.Name, err = func(item stackitem.Item) (string, error) {
|
|
b, err := item.TryBytes()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
if !utf8.Valid(b) {
|
|
return "", errors.New("not a UTF-8 string")
|
|
}
|
|
return string(b), nil
|
|
}(arr[index])
|
|
if err != nil {
|
|
return fmt.Errorf("field Name: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.OldExpiration, err = arr[index].TryInteger()
|
|
if err != nil {
|
|
return fmt.Errorf("field OldExpiration: %w", err)
|
|
}
|
|
|
|
index++
|
|
e.NewExpiration, err = arr[index].TryInteger()
|
|
if err != nil {
|
|
return fmt.Errorf("field NewExpiration: %w", err)
|
|
}
|
|
|
|
return nil
|
|
}
|