status-go/services/wallet/common/helpers.go

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package common
import (
"encoding/hex"
"fmt"
"math/big"
"strings"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/status-im/status-go/contracts/ierc20"
pathProcessorCommon "github.com/status-im/status-go/services/wallet/router/pathprocessor/common"
)
func IsProcessorBridge(name string) bool {
return name == pathProcessorCommon.ProcessorBridgeHopName || name == pathProcessorCommon.ProcessorBridgeCelerName
}
func IsProcessorSwap(name string) bool {
return name == pathProcessorCommon.ProcessorSwapParaswapName
}
func PackApprovalInputData(amountIn *big.Int, approvalContractAddress *common.Address) ([]byte, error) {
if approvalContractAddress == nil || *approvalContractAddress == ZeroAddress() {
return []byte{}, nil
}
erc20ABI, err := abi.JSON(strings.NewReader(ierc20.IERC20ABI))
if err != nil {
return []byte{}, err
}
return erc20ABI.Pack("approve", approvalContractAddress, amountIn)
}
func GetTokenIdFromSymbol(symbol string) (*big.Int, error) {
id, success := big.NewInt(0).SetString(symbol, 0)
if !success {
return nil, fmt.Errorf("failed to convert %s to big.Int", symbol)
}
return id, nil
}
func FullDomainName(username string) string {
return username + "." + StatusDomain
}
func ExtractCoordinates(pubkey string) ([32]byte, [32]byte) {
x, _ := hex.DecodeString(pubkey[4:68])
y, _ := hex.DecodeString(pubkey[68:132])
var xByte [32]byte
copy(xByte[:], x)
var yByte [32]byte
copy(yByte[:], y)
return xByte, yByte
}
func NameHash(name string) common.Hash {
node := common.Hash{}
if len(name) > 0 {
labels := strings.Split(name, ".")
for i := len(labels) - 1; i >= 0; i-- {
labelSha := crypto.Keccak256Hash([]byte(labels[i]))
node = crypto.Keccak256Hash(node.Bytes(), labelSha.Bytes())
}
}
return node
}
func ValidateENSUsername(username string) error {
if !strings.HasSuffix(username, ".eth") {
return fmt.Errorf("username must end with .eth")
}
return nil
}
func UsernameToLabel(username string) [32]byte {
usernameHashed := crypto.Keccak256([]byte(username))
var label [32]byte
copy(label[:], usernameHashed)
return label
}