laconicd/types/validation.go

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package types
import (
"bytes"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/ethereum/go-ethereum/common"
)
// IsEmptyHash returns true if the hash corresponds to an empty ethereum hex hash.
func IsEmptyHash(hash string) bool {
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return bytes.Equal(common.HexToHash(hash).Bytes(), common.Hash{}.Bytes())
}
// IsZeroAddress returns true if the address corresponds to an empty ethereum hex address.
func IsZeroAddress(address string) bool {
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return bytes.Equal(common.HexToAddress(address).Bytes(), common.Address{}.Bytes())
}
// ValidateAddress returns an error if the provided string is either not a hex formatted string address
func ValidateAddress(address string) error {
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if !common.IsHexAddress(address) {
return sdkerrors.Wrapf(
sdkerrors.ErrInvalidAddress, "address '%s' is not a valid ethereum hex address",
address,
)
}
return nil
}
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// ValidateNonZeroAddress returns an error if the provided string is not a hex
// formatted string address or is equal to zero
func ValidateNonZeroAddress(address string) error {
if IsZeroAddress(address) {
return sdkerrors.Wrapf(
sdkerrors.ErrInvalidAddress, "address '%s' must not be zero",
address,
)
}
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return ValidateAddress(address)
}