429 lines
12 KiB
Go
429 lines
12 KiB
Go
package ext
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import (
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"context"
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"crypto/ecdsa"
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"database/sql"
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"math/big"
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"os"
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"path/filepath"
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"time"
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"github.com/syndtr/goleveldb/leveldb"
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commongethtypes "github.com/ethereum/go-ethereum/common"
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gethtypes "github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/ethclient"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/status-im/status-go/connection"
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"github.com/status-im/status-go/db"
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coretypes "github.com/status-im/status-go/eth-node/core/types"
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"github.com/status-im/status-go/eth-node/types"
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"github.com/status-im/status-go/multiaccounts"
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"github.com/status-im/status-go/multiaccounts/accounts"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/protocol"
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"github.com/status-im/status-go/protocol/pushnotificationclient"
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"github.com/status-im/status-go/protocol/pushnotificationserver"
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"github.com/status-im/status-go/protocol/transport"
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"github.com/status-im/status-go/services/ext/mailservers"
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localnotifications "github.com/status-im/status-go/services/local-notifications"
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mailserversDB "github.com/status-im/status-go/services/mailservers"
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"github.com/status-im/status-go/services/wallet"
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"go.uber.org/zap"
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)
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// EnvelopeEventsHandler used for two different event types.
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type EnvelopeEventsHandler interface {
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EnvelopeSent([][]byte)
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EnvelopeExpired([][]byte, error)
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MailServerRequestCompleted(types.Hash, types.Hash, []byte, error)
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MailServerRequestExpired(types.Hash)
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}
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// Service is a service that provides some additional API to whisper-based protocols like Whisper or Waku.
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type Service struct {
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messenger *protocol.Messenger
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identity *ecdsa.PrivateKey
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cancelMessenger chan struct{}
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storage db.TransactionalStorage
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n types.Node
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config params.ShhextConfig
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mailMonitor *MailRequestMonitor
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server *p2p.Server
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peerStore *mailservers.PeerStore
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accountsDB *accounts.Database
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multiAccountsDB *multiaccounts.Database
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account *multiaccounts.Account
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}
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// Make sure that Service implements node.Service interface.
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var _ node.Lifecycle = (*Service)(nil)
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func New(
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config params.ShhextConfig,
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n types.Node,
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ldb *leveldb.DB,
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mailMonitor *MailRequestMonitor,
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eventSub mailservers.EnvelopeEventSubscriber,
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) *Service {
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cache := mailservers.NewCache(ldb)
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peerStore := mailservers.NewPeerStore(cache)
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return &Service{
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storage: db.NewLevelDBStorage(ldb),
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n: n,
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config: config,
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mailMonitor: mailMonitor,
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peerStore: peerStore,
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}
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}
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func (s *Service) NodeID() *ecdsa.PrivateKey {
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if s.server == nil {
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return nil
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}
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return s.server.PrivateKey
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}
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func (s *Service) GetPeer(rawURL string) (*enode.Node, error) {
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if len(rawURL) == 0 {
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return mailservers.GetFirstConnected(s.server, s.peerStore)
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}
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return enode.ParseV4(rawURL)
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}
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func (s *Service) InitProtocol(identity *ecdsa.PrivateKey, db *sql.DB, multiAccountDb *multiaccounts.Database, acc *multiaccounts.Account, logger *zap.Logger) error {
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if !s.config.PFSEnabled {
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return nil
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}
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// If Messenger has been already set up, we need to shut it down
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// before we init it again. Otherwise, it will lead to goroutines leakage
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// due to not stopped filters.
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if s.messenger != nil {
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if err := s.messenger.Shutdown(); err != nil {
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return err
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}
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}
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s.identity = identity
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dataDir := filepath.Clean(s.config.BackupDisabledDataDir)
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if err := os.MkdirAll(dataDir, os.ModePerm); err != nil {
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return err
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}
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envelopesMonitorConfig := &transport.EnvelopesMonitorConfig{
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MaxAttempts: s.config.MaxMessageDeliveryAttempts,
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MailserverConfirmationsEnabled: s.config.MailServerConfirmations,
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IsMailserver: func(peer types.EnodeID) bool {
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return s.peerStore.Exist(peer)
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},
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EnvelopeEventsHandler: EnvelopeSignalHandler{},
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Logger: logger,
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}
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s.accountsDB = accounts.NewDB(db)
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s.multiAccountsDB = multiAccountDb
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s.account = acc
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options, err := buildMessengerOptions(s.config, identity, db, s.multiAccountsDB, acc, envelopesMonitorConfig, s.accountsDB, logger, &MessengerSignalsHandler{})
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if err != nil {
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return err
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}
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messenger, err := protocol.NewMessenger(
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identity,
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s.n,
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s.config.InstallationID,
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options...,
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)
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if err != nil {
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return err
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}
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s.messenger = messenger
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return messenger.Init()
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}
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func (s *Service) StartMessenger() (*protocol.MessengerResponse, error) {
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// Start a loop that retrieves all messages and propagates them to status-react.
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s.cancelMessenger = make(chan struct{})
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response, err := s.messenger.Start()
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if err != nil {
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return nil, err
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}
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go s.retrieveMessagesLoop(time.Second, s.cancelMessenger)
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go s.verifyTransactionLoop(30*time.Second, s.cancelMessenger)
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return response, nil
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}
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func publishMessengerResponse(response *protocol.MessengerResponse) {
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if !response.IsEmpty() {
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notifications := response.Notifications()
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// Clear notifications as not used for now
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response.ClearNotifications()
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PublisherSignalHandler{}.NewMessages(response)
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localnotifications.PushMessages(notifications)
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}
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}
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func (s *Service) retrieveMessagesLoop(tick time.Duration, cancel <-chan struct{}) {
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ticker := time.NewTicker(tick)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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response, err := s.messenger.RetrieveAll()
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if err != nil {
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log.Error("failed to retrieve raw messages", "err", err)
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continue
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}
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publishMessengerResponse(response)
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case <-cancel:
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return
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}
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}
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}
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type verifyTransactionClient struct {
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chainID *big.Int
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url string
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}
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func (c *verifyTransactionClient) TransactionByHash(ctx context.Context, hash types.Hash) (coretypes.Message, coretypes.TransactionStatus, error) {
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signer := gethtypes.NewLondonSigner(c.chainID)
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client, err := ethclient.Dial(c.url)
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if err != nil {
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return coretypes.Message{}, coretypes.TransactionStatusPending, err
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}
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transaction, pending, err := client.TransactionByHash(ctx, commongethtypes.BytesToHash(hash.Bytes()))
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if err != nil {
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return coretypes.Message{}, coretypes.TransactionStatusPending, err
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}
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message, err := transaction.AsMessage(signer, nil)
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if err != nil {
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return coretypes.Message{}, coretypes.TransactionStatusPending, err
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}
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from := types.BytesToAddress(message.From().Bytes())
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to := types.BytesToAddress(message.To().Bytes())
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if pending {
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return coretypes.NewMessage(
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from,
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&to,
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message.Nonce(),
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message.Value(),
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message.Gas(),
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message.GasPrice(),
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message.Data(),
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message.CheckNonce(),
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), coretypes.TransactionStatusPending, nil
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}
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receipt, err := client.TransactionReceipt(ctx, commongethtypes.BytesToHash(hash.Bytes()))
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if err != nil {
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return coretypes.Message{}, coretypes.TransactionStatusPending, err
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}
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coremessage := coretypes.NewMessage(
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from,
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&to,
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message.Nonce(),
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message.Value(),
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message.Gas(),
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message.GasPrice(),
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message.Data(),
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message.CheckNonce(),
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)
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// Token transfer, check the logs
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if len(coremessage.Data()) != 0 {
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if wallet.IsTokenTransfer(receipt.Logs) {
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return coremessage, coretypes.TransactionStatus(receipt.Status), nil
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}
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return coremessage, coretypes.TransactionStatusFailed, nil
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}
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return coremessage, coretypes.TransactionStatus(receipt.Status), nil
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}
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func (s *Service) verifyTransactionLoop(tick time.Duration, cancel <-chan struct{}) {
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if s.config.VerifyTransactionURL == "" {
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log.Warn("not starting transaction loop")
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return
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}
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ticker := time.NewTicker(tick)
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defer ticker.Stop()
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ctx, cancelVerifyTransaction := context.WithCancel(context.Background())
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for {
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select {
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case <-ticker.C:
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accounts, err := s.accountsDB.GetAccounts()
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if err != nil {
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log.Error("failed to retrieve accounts", "err", err)
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}
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var wallets []types.Address
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for _, account := range accounts {
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if account.IsOwnAccount() {
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wallets = append(wallets, types.BytesToAddress(account.Address.Bytes()))
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}
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}
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response, err := s.messenger.ValidateTransactions(ctx, wallets)
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if err != nil {
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log.Error("failed to validate transactions", "err", err)
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continue
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}
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publishMessengerResponse(response)
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case <-cancel:
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cancelVerifyTransaction()
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return
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}
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}
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}
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func (s *Service) EnableInstallation(installationID string) error {
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return s.messenger.EnableInstallation(installationID)
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}
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// DisableInstallation disables an installation for multi-device sync.
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func (s *Service) DisableInstallation(installationID string) error {
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return s.messenger.DisableInstallation(installationID)
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}
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// UpdateMailservers updates information about selected mail servers.
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func (s *Service) UpdateMailservers(nodes []*enode.Node) error {
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if len(nodes) > 0 && s.messenger != nil {
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s.messenger.SetMailserver(nodes[0].ID().Bytes())
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}
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for _, peer := range nodes {
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s.server.AddPeer(peer)
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}
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if err := s.peerStore.Update(nodes); err != nil {
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return err
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}
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return nil
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}
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// Protocols returns a new protocols list. In this case, there are none.
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func (s *Service) Protocols() []p2p.Protocol {
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return []p2p.Protocol{}
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}
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// APIs returns a list of new APIs.
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func (s *Service) APIs() []rpc.API {
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panic("this is abstract service, use shhext or wakuext implementation")
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}
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func (s *Service) SetP2PServer(server *p2p.Server) {
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s.server = server
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}
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// Start is run when a service is started.
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// It does nothing in this case but is required by `node.Service` interface.
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func (s *Service) Start() error {
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return nil
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}
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// Stop is run when a service is stopped.
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func (s *Service) Stop() error {
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log.Info("Stopping shhext service")
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if s.cancelMessenger != nil {
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select {
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case <-s.cancelMessenger:
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// channel already closed
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default:
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close(s.cancelMessenger)
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s.cancelMessenger = nil
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}
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}
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if s.messenger != nil {
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if err := s.messenger.Shutdown(); err != nil {
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log.Error("failed to stop messenger", "err", err)
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return err
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}
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s.messenger = nil
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}
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return nil
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}
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func buildMessengerOptions(
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config params.ShhextConfig,
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identity *ecdsa.PrivateKey,
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db *sql.DB,
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multiAccounts *multiaccounts.Database,
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account *multiaccounts.Account,
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envelopesMonitorConfig *transport.EnvelopesMonitorConfig,
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accountsDB *accounts.Database,
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logger *zap.Logger,
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messengerSignalsHandler protocol.MessengerSignalsHandler,
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) ([]protocol.Option, error) {
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options := []protocol.Option{
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protocol.WithCustomLogger(logger),
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protocol.WithPushNotifications(),
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protocol.WithDatabase(db),
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protocol.WithMultiAccounts(multiAccounts),
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protocol.WithMailserversDatabase(mailserversDB.NewDB(db)),
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protocol.WithAccount(account),
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protocol.WithEnvelopesMonitorConfig(envelopesMonitorConfig),
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protocol.WithSignalsHandler(messengerSignalsHandler),
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protocol.WithENSVerificationConfig(publishMessengerResponse, config.VerifyENSURL, config.VerifyENSContractAddress),
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}
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if config.DataSyncEnabled {
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options = append(options, protocol.WithDatasync())
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}
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settings, err := accountsDB.GetSettings()
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if err != sql.ErrNoRows && err != nil {
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return nil, err
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}
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if settings.PushNotificationsServerEnabled {
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config := &pushnotificationserver.Config{
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Enabled: true,
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Logger: logger,
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}
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options = append(options, protocol.WithPushNotificationServerConfig(config))
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}
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options = append(options, protocol.WithPushNotificationClientConfig(&pushnotificationclient.Config{
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DefaultServers: config.DefaultPushNotificationsServers,
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BlockMentions: settings.PushNotificationsBlockMentions,
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SendEnabled: settings.SendPushNotifications,
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AllowFromContactsOnly: settings.PushNotificationsFromContactsOnly,
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RemoteNotificationsEnabled: settings.RemotePushNotificationsEnabled,
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}))
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if config.VerifyTransactionURL != "" {
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client := &verifyTransactionClient{
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url: config.VerifyTransactionURL,
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chainID: big.NewInt(config.VerifyTransactionChainID),
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}
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options = append(options, protocol.WithVerifyTransactionClient(client))
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}
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return options, nil
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}
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func (s *Service) ConnectionChanged(state connection.State) {
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if s.messenger != nil {
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s.messenger.ConnectionChanged(state)
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}
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}
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