347 lines
11 KiB
Go
347 lines
11 KiB
Go
package shhext
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import (
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"crypto/ecdsa"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"time"
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"github.com/ethereum/go-ethereum/common"
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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/db"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/services/shhext/chat"
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appDB "github.com/status-im/status-go/services/shhext/chat/db"
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"github.com/status-im/status-go/services/shhext/chat/topic"
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"github.com/status-im/status-go/services/shhext/dedup"
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"github.com/status-im/status-go/services/shhext/filter"
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"github.com/status-im/status-go/services/shhext/mailservers"
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"github.com/status-im/status-go/signal"
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whisper "github.com/status-im/whisper/whisperv6"
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"github.com/syndtr/goleveldb/leveldb"
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"golang.org/x/crypto/sha3"
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)
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const (
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// defaultConnectionsTarget used in Service.Start if configured connection target is 0.
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defaultConnectionsTarget = 1
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// defaultTimeoutWaitAdded is a timeout to use to establish initial connections.
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defaultTimeoutWaitAdded = 5 * time.Second
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)
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var errProtocolNotInitialized = errors.New("protocol is not initialized")
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// EnvelopeEventsHandler used for two different event types.
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type EnvelopeEventsHandler interface {
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EnvelopeSent(common.Hash)
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EnvelopeExpired(common.Hash, error)
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MailServerRequestCompleted(common.Hash, common.Hash, []byte, error)
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MailServerRequestExpired(common.Hash)
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}
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// Service is a service that provides some additional Whisper API.
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type Service struct {
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storage db.TransactionalStorage
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w *whisper.Whisper
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config params.ShhextConfig
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envelopesMonitor *EnvelopesMonitor
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mailMonitor *MailRequestMonitor
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requestsRegistry *RequestsRegistry
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historyUpdates *HistoryUpdateReactor
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server *p2p.Server
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nodeID *ecdsa.PrivateKey
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deduplicator *dedup.Deduplicator
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protocol *chat.ProtocolService
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dataDir string
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installationID string
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pfsEnabled bool
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peerStore *mailservers.PeerStore
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cache *mailservers.Cache
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connManager *mailservers.ConnectionManager
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lastUsedMonitor *mailservers.LastUsedConnectionMonitor
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filter *filter.Service
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}
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// Make sure that Service implements node.Service interface.
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var _ node.Service = (*Service)(nil)
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// New returns a new Service. dataDir is a folder path to a network-independent location
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func New(w *whisper.Whisper, handler EnvelopeEventsHandler, ldb *leveldb.DB, config params.ShhextConfig) *Service {
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cache := mailservers.NewCache(ldb)
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ps := mailservers.NewPeerStore(cache)
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delay := defaultRequestsDelay
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if config.RequestsDelay != 0 {
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delay = config.RequestsDelay
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}
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requestsRegistry := NewRequestsRegistry(delay)
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historyUpdates := NewHistoryUpdateReactor()
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mailMonitor := &MailRequestMonitor{
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w: w,
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handler: handler,
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cache: map[common.Hash]EnvelopeState{},
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requestsRegistry: requestsRegistry,
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}
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envelopesMonitor := NewEnvelopesMonitor(w, handler, config.MailServerConfirmations, ps, config.MaxMessageDeliveryAttempts)
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return &Service{
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storage: db.NewLevelDBStorage(ldb),
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w: w,
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config: config,
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envelopesMonitor: envelopesMonitor,
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mailMonitor: mailMonitor,
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requestsRegistry: requestsRegistry,
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historyUpdates: historyUpdates,
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deduplicator: dedup.NewDeduplicator(w, ldb),
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dataDir: config.BackupDisabledDataDir,
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installationID: config.InstallationID,
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pfsEnabled: config.PFSEnabled,
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peerStore: ps,
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cache: cache,
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}
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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 err := s.peerStore.Update(nodes); err != nil {
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return err
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}
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if s.connManager != nil {
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s.connManager.Notify(nodes)
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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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// InitProtocolWithPassword creates an instance of ProtocolService given an address and password used to generate an encryption key.
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func (s *Service) InitProtocolWithPassword(address string, password string) error {
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digest := sha3.Sum256([]byte(password))
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encKey := fmt.Sprintf("%x", digest)
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return s.initProtocol(address, encKey, password)
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}
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// InitProtocolWithEncyptionKey creates an instance of ProtocolService given an address and encryption key.
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func (s *Service) InitProtocolWithEncyptionKey(address string, encKey string) error {
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return s.initProtocol(address, encKey, "")
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}
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func (s *Service) initProtocol(address, encKey, password string) error {
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if !s.pfsEnabled {
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return nil
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}
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if err := os.MkdirAll(filepath.Clean(s.dataDir), os.ModePerm); err != nil {
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return err
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}
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v0Path := filepath.Join(s.dataDir, fmt.Sprintf("%x.db", address))
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v1Path := filepath.Join(s.dataDir, fmt.Sprintf("%s.db", s.installationID))
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v2Path := filepath.Join(s.dataDir, fmt.Sprintf("%s.v2.db", s.installationID))
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v3Path := filepath.Join(s.dataDir, fmt.Sprintf("%s.v3.db", s.installationID))
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v4Path := filepath.Join(s.dataDir, fmt.Sprintf("%s.v4.db", s.installationID))
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if password != "" {
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if err := appDB.MigrateDBFile(v0Path, v1Path, "ON", password); err != nil {
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return err
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}
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if err := appDB.MigrateDBFile(v1Path, v2Path, password, encKey); err != nil {
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// Remove db file as created with a blank password and never used,
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// and there's no need to rekey in this case
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os.Remove(v1Path)
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os.Remove(v2Path)
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}
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}
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if err := appDB.MigrateDBKeyKdfIterations(v2Path, v3Path, encKey); err != nil {
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os.Remove(v2Path)
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os.Remove(v3Path)
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}
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// Fix IOS not encrypting database
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if err := appDB.EncryptDatabase(v3Path, v4Path, encKey); err != nil {
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os.Remove(v3Path)
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os.Remove(v4Path)
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}
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// Desktop was passing a network dependent directory, which meant that
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// if running on testnet it would not access the right db. This copies
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// the db from mainnet to the root location.
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networkDependentPath := filepath.Join(s.dataDir, "ethereum", "mainnet_rpc", fmt.Sprintf("%s.v4.db", s.installationID))
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if _, err := os.Stat(networkDependentPath); err == nil {
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if err := os.Rename(networkDependentPath, v4Path); err != nil {
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return err
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}
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} else if !os.IsNotExist(err) {
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return err
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}
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persistence, err := chat.NewSQLLitePersistence(v4Path, encKey)
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if err != nil {
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return err
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}
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addedBundlesHandler := func(addedBundles []chat.IdentityAndIDPair) {
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handler := EnvelopeSignalHandler{}
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for _, bundle := range addedBundles {
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handler.BundleAdded(bundle[0], bundle[1])
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}
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}
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// Initialize topics
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topicService := topic.NewService(persistence.GetTopicStorage())
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filterService := filter.New(s.config.AsymKeyID, s.w, topicService)
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s.filter = filterService
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s.protocol = chat.NewProtocolService(
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chat.NewEncryptionService(
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persistence,
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chat.DefaultEncryptionServiceConfig(s.installationID)),
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topicService,
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addedBundlesHandler,
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s.onNewTopicHandler)
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return nil
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}
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func (s *Service) ProcessPublicBundle(myIdentityKey *ecdsa.PrivateKey, bundle *chat.Bundle) ([]chat.IdentityAndIDPair, error) {
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if s.protocol == nil {
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return nil, errProtocolNotInitialized
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}
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return s.protocol.ProcessPublicBundle(myIdentityKey, bundle)
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}
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func (s *Service) GetBundle(myIdentityKey *ecdsa.PrivateKey) (*chat.Bundle, error) {
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if s.protocol == nil {
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return nil, errProtocolNotInitialized
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}
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return s.protocol.GetBundle(myIdentityKey)
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}
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// EnableInstallation enables an installation for multi-device sync.
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func (s *Service) EnableInstallation(myIdentityKey *ecdsa.PublicKey, installationID string) error {
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if s.protocol == nil {
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return errProtocolNotInitialized
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}
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return s.protocol.EnableInstallation(myIdentityKey, installationID)
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}
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func (s *Service) GetPublicBundle(identityKey *ecdsa.PublicKey) (*chat.Bundle, error) {
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if s.protocol == nil {
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return nil, errProtocolNotInitialized
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}
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return s.protocol.GetPublicBundle(identityKey)
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}
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// DisableInstallation disables an installation for multi-device sync.
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func (s *Service) DisableInstallation(myIdentityKey *ecdsa.PublicKey, installationID string) error {
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if s.protocol == nil {
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return errProtocolNotInitialized
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}
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return s.protocol.DisableInstallation(myIdentityKey, installationID)
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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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apis := []rpc.API{
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{
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Namespace: "shhext",
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Version: "1.0",
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Service: NewPublicAPI(s),
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Public: true,
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},
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}
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return apis
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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(server *p2p.Server) error {
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if s.config.EnableConnectionManager {
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connectionsTarget := s.config.ConnectionTarget
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if connectionsTarget == 0 {
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connectionsTarget = defaultConnectionsTarget
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}
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maxFailures := s.config.MaxServerFailures
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// if not defined change server on first expired event
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if maxFailures == 0 {
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maxFailures = 1
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}
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s.connManager = mailservers.NewConnectionManager(server, s.w, connectionsTarget, maxFailures, defaultTimeoutWaitAdded)
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s.connManager.Start()
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if err := mailservers.EnsureUsedRecordsAddedFirst(s.peerStore, s.connManager); err != nil {
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return err
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}
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}
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if s.config.EnableLastUsedMonitor {
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s.lastUsedMonitor = mailservers.NewLastUsedConnectionMonitor(s.peerStore, s.cache, s.w)
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s.lastUsedMonitor.Start()
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}
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s.envelopesMonitor.Start()
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s.mailMonitor.Start()
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s.nodeID = server.PrivateKey
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s.server = server
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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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// It does nothing in this case but is required by `node.Service` interface.
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func (s *Service) Stop() error {
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if s.config.EnableConnectionManager {
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s.connManager.Stop()
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}
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if s.config.EnableLastUsedMonitor {
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s.lastUsedMonitor.Stop()
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}
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s.requestsRegistry.Clear()
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s.envelopesMonitor.Stop()
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s.mailMonitor.Stop()
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s.filter.Stop()
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return nil
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}
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func (s *Service) GetNegotiatedChat(identity *ecdsa.PublicKey) *filter.Chat {
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return s.filter.Get(identity)
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}
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func (s *Service) LoadFilters(chats []*filter.Chat) error {
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return s.filter.Init(chats)
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}
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func (s *Service) RemoveFilter(chat *filter.Chat) {
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// remove filter
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}
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func (s *Service) onNewTopicHandler(sharedSecrets []*topic.Secret) {
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var filters []*signal.Filter
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log.Info("NEW TOPIC HANDLER", "secrets", sharedSecrets)
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for _, sharedSecret := range sharedSecrets {
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err := s.filter.ProcessNegotiatedSecret(sharedSecret)
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if err != nil {
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log.Error("Failed to process negotiated secret", "err", err)
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return
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}
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}
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// TODO: send back chat filter
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log.Info("FILTER IDS", "filter", filters)
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if len(filters) != 0 {
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log.Info("SENDING FILTERS")
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handler := EnvelopeSignalHandler{}
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handler.WhisperFilterAdded(filters)
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}
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}
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