package account import ( "encoding/json" "errors" "fmt" "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts/keystore" "github.com/ethereum/go-ethereum/common" ) // errors var ( ErrInvalidAccountAddressOrKey = errors.New("cannot parse address or key to valid account address") ErrInvalidMnemonicPhraseLength = errors.New("invalid mnemonic phrase length; valid lengths are 12, 15, 18, 21, and 24") ) type LoginParams struct { ChatAddress common.Address `json:"chatAddress"` Password string `json:"password"` MainAccount common.Address `json:"mainAccount"` WatchAddresses []common.Address `json:"watchAddresses"` } type ErrZeroAddress struct { field string } func (e *ErrZeroAddress) Error() string { return fmt.Sprintf("%s contains an empty address", e.field) } func newErrZeroAddress(field string) *ErrZeroAddress { return &ErrZeroAddress{ field: field, } } func ParseLoginParams(paramsJSON string) (LoginParams, error) { var ( params LoginParams zeroAddress common.Address ) if err := json.Unmarshal([]byte(paramsJSON), ¶ms); err != nil { return params, err } if params.ChatAddress == zeroAddress { return params, newErrZeroAddress("ChatAddress") } if params.MainAccount == zeroAddress { return params, newErrZeroAddress("MainAccount") } for _, address := range params.WatchAddresses { if address == zeroAddress { return params, newErrZeroAddress("WatchAddresses") } } return params, nil } // Info contains wallet and chat addresses and public keys of an account. type Info struct { WalletAddress string WalletPubKey string ChatAddress string ChatPubKey string } // SelectedExtKey is a container for the selected (logged in) external account. type SelectedExtKey struct { Address common.Address AccountKey *keystore.Key SubAccounts []accounts.Account } // Hex dumps address of a given extended key as hex string. func (k *SelectedExtKey) Hex() string { if k == nil { return "0x0" } return k.Address.Hex() } // ParseAccountString parses hex encoded string and returns is as accounts.Account. func ParseAccountString(account string) (accounts.Account, error) { // valid address, convert to account if common.IsHexAddress(account) { return accounts.Account{Address: common.HexToAddress(account)}, nil } return accounts.Account{}, ErrInvalidAccountAddressOrKey } // FromAddress converts account address from string to common.Address. // The function is useful to format "From" field of send transaction struct. func FromAddress(accountAddress string) common.Address { from, err := ParseAccountString(accountAddress) if err != nil { return common.Address{} } return from.Address } // ToAddress converts account address from string to *common.Address. // The function is useful to format "To" field of send transaction struct. func ToAddress(accountAddress string) *common.Address { to, err := ParseAccountString(accountAddress) if err != nil { return nil } return &to.Address }