Feat/expose registrar address (#2600)

* feat: expose registrar address

* fix code gen

contracts/ierc20/ierc20.go

@@ -27,13 +27,16 @@ var (
 )
 
 // IERC20ABI is the input ABI used to generate the binding from.
-const IERC20ABI = "[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"sender\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]"
+const IERC20ABI = "[{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"sender\",\"type\":\"address\"},{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"recipient\",\"type\":\"address\"},{\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}]"
 
 // IERC20FuncSigs maps the 4-byte function signature to its string representation.
 var IERC20FuncSigs = map[string]string{
 	"dd62ed3e": "allowance(address,address)",
 	"095ea7b3": "approve(address,uint256)",
 	"70a08231": "balanceOf(address)",
+	"313ce567": "decimals()",
+	"06fdde03": "name()",
+	"95d89b41": "symbol()",
 	"18160ddd": "totalSupply()",
 	"a9059cbb": "transfer(address,uint256)",
 	"23b872dd": "transferFrom(address,address,uint256)",
@@ -243,6 +246,99 @@ func (_IERC20 *IERC20CallerSession) BalanceOf(account common.Address) (*big.Int,
 	return _IERC20.Contract.BalanceOf(&_IERC20.CallOpts, account)
 }
 
+// Decimals is a free data retrieval call binding the contract method 0x313ce567.
+//
+// Solidity: function decimals() view returns(uint8)
+func (_IERC20 *IERC20Caller) Decimals(opts *bind.CallOpts) (uint8, error) {
+	var out []interface{}
+	err := _IERC20.contract.Call(opts, &out, "decimals")
+
+	if err != nil {
+		return *new(uint8), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(uint8)).(*uint8)
+
+	return out0, err
+
+}
+
+// Decimals is a free data retrieval call binding the contract method 0x313ce567.
+//
+// Solidity: function decimals() view returns(uint8)
+func (_IERC20 *IERC20Session) Decimals() (uint8, error) {
+	return _IERC20.Contract.Decimals(&_IERC20.CallOpts)
+}
+
+// Decimals is a free data retrieval call binding the contract method 0x313ce567.
+//
+// Solidity: function decimals() view returns(uint8)
+func (_IERC20 *IERC20CallerSession) Decimals() (uint8, error) {
+	return _IERC20.Contract.Decimals(&_IERC20.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_IERC20 *IERC20Caller) Name(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _IERC20.contract.Call(opts, &out, "name")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_IERC20 *IERC20Session) Name() (string, error) {
+	return _IERC20.Contract.Name(&_IERC20.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_IERC20 *IERC20CallerSession) Name() (string, error) {
+	return _IERC20.Contract.Name(&_IERC20.CallOpts)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_IERC20 *IERC20Caller) Symbol(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _IERC20.contract.Call(opts, &out, "symbol")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_IERC20 *IERC20Session) Symbol() (string, error) {
+	return _IERC20.Contract.Symbol(&_IERC20.CallOpts)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_IERC20 *IERC20CallerSession) Symbol() (string, error) {
+	return _IERC20.Contract.Symbol(&_IERC20.CallOpts)
+}
+
 // TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
 //
 // Solidity: function totalSupply() view returns(uint256)

contracts/ierc20/ierc20.sol

@@ -1,11 +1,17 @@
 // SPDX-License-Identifier: MIT
 
-pragma solidity ^0.8.0;
+pragma solidity ^0.4.24;
 
 /**
  * @dev Interface of the ERC20 standard as defined in the EIP.
  */
 interface IERC20 {
+    function name() external view returns (string memory);
+
+    function symbol() external view returns (string memory);
+
+    function decimals() external view returns (uint8);
+    
     /**
      * @dev Returns the amount of tokens in existence.
      */

services/ens/api.go

@@ -56,6 +56,10 @@ type API struct {
 	config          *params.NodeConfig
 }
 
+func (api *API) GetRegistrarAddress(ctx context.Context, chainID uint64) (common.Address, error) {
+	return registrar.ContractAddress(chainID)
+}
+
 func (api *API) Resolver(ctx context.Context, chainID uint64, username string) (*common.Address, error) {
 	err := validateENSUsername(username)
 	if err != nil {

services/wallet/api.go

@@ -93,6 +93,12 @@ func (api *API) GetCustomTokens(ctx context.Context) ([]*Token, error) {
 	return rst, err
 }
 
+func (api *API) DiscoverToken(ctx context.Context, chainID uint64, address common.Address) (*Token, error) {
+	log.Debug("call to get discover token")
+	token, err := api.s.tokenManager.discoverToken(ctx, chainID, address)
+	return token, err
+}
+
 func (api *API) AddCustomToken(ctx context.Context, token Token) error {
 	log.Debug("call to create or edit custom token")
 	if token.ChainID == 0 {

services/wallet/service.go

@@ -17,7 +17,7 @@ func NewService(db *sql.DB, rpcClient *rpc.Client, accountFeed *event.Feed, open
 	cryptoOnRampManager := NewCryptoOnRampManager(&CryptoOnRampOptions{
 		dataSourceType: DataSourceStatic,
 	})
-	tokenManager := &TokenManager{db: db}
+	tokenManager := &TokenManager{db: db, RPCClient: rpcClient}
 	savedAddressesManager := &SavedAddressesManager{db: db}
 	transactionManager := &TransactionManager{db: db}
 	favouriteManager := &FavouriteManager{db: db}

services/wallet/token.go

@@ -13,6 +13,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/status-im/status-go/contracts/ierc20"
+	"github.com/status-im/status-go/rpc"
 	"github.com/status-im/status-go/services/wallet/async"
 	"github.com/status-im/status-go/services/wallet/chain"
 )
@@ -32,7 +33,8 @@ type Token struct {
 }
 
 type TokenManager struct {
-	db *sql.DB
+	db        *sql.DB
+	RPCClient *rpc.Client
 }
 
 func (tm *TokenManager) getTokens(chainID uint64) ([]*Token, error) {
@@ -50,6 +52,45 @@ func (tm *TokenManager) getTokens(chainID uint64) ([]*Token, error) {
 	return res, nil
 }
 
+func (tm *TokenManager) discoverToken(ctx context.Context, chainID uint64, address common.Address) (*Token, error) {
+	backend, err := tm.RPCClient.EthClient(chainID)
+	if err != nil {
+		return nil, err
+	}
+	caller, err := ierc20.NewIERC20Caller(address, backend)
+	if err != nil {
+		return nil, err
+	}
+
+	name, err := caller.Name(&bind.CallOpts{
+		Context: ctx,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	symbol, err := caller.Symbol(&bind.CallOpts{
+		Context: ctx,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	decimal, err := caller.Decimals(&bind.CallOpts{
+		Context: ctx,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return &Token{
+		Address:  address,
+		Name:     name,
+		Symbol:   symbol,
+		Decimals: uint(decimal),
+	}, nil
+}
+
 func (tm *TokenManager) getCustoms() ([]*Token, error) {
 	rows, err := tm.db.Query("SELECT address, name, symbol, decimals, color, network_id FROM tokens")
 	if err != nil {

services/wallet/token_test.go

@@ -17,7 +17,7 @@ func setupTestTokenDB(t *testing.T) (*TokenManager, func()) {
 	require.NoError(t, err)
 	db, err := appdatabase.InitializeDB(tmpfile.Name(), "wallet-token-tests")
 	require.NoError(t, err)
-	return &TokenManager{db}, func() {
+	return &TokenManager{db, nil}, func() {
 		require.NoError(t, db.Close())
 		require.NoError(t, os.Remove(tmpfile.Name()))
 	}