status-go/account/utils.go

122 lines
3.0 KiB
Go

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), &params); 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
}