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