package database import ( "database/sql" "encoding/json" "fmt" "github.com/matrix-org/go-neb/api" "github.com/matrix-org/go-neb/types" "time" ) // A ServiceDB stores the configuration for the services type ServiceDB struct { db *sql.DB } // A single global instance of the service DB. var globalServiceDB Storer // SetServiceDB sets the global service DB instance. func SetServiceDB(db Storer) { globalServiceDB = db } // GetServiceDB gets the global service DB instance. func GetServiceDB() Storer { return globalServiceDB } // Open a SQL database to use as a ServiceDB. This will automatically create // the necessary database tables if they aren't already present. func Open(databaseType, databaseURL string) (serviceDB *ServiceDB, err error) { db, err := sql.Open(databaseType, databaseURL) if err != nil { return } if _, err = db.Exec(schemaSQL); err != nil { return } if databaseType == "sqlite3" { // Fix for "database is locked" errors // https://github.com/mattn/go-sqlite3/issues/274 db.SetMaxOpenConns(1) } serviceDB = &ServiceDB{db: db} return } // StoreMatrixClientConfig stores the Matrix client config for a bot service. // If a config already exists then it will be updated, otherwise a new config // will be inserted. The previous config is returned. func (d *ServiceDB) StoreMatrixClientConfig(config api.ClientConfig) (oldConfig api.ClientConfig, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { oldConfig, err = selectMatrixClientConfigTxn(txn, config.UserID) now := time.Now() if err == nil { return updateMatrixClientConfigTxn(txn, now, config) } else if err == sql.ErrNoRows { return insertMatrixClientConfigTxn(txn, now, config) } else { return err } }) return } // LoadMatrixClientConfigs loads all Matrix client configs from the database. func (d *ServiceDB) LoadMatrixClientConfigs() (configs []api.ClientConfig, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { configs, err = selectMatrixClientConfigsTxn(txn) return err }) return } // LoadMatrixClientConfig loads a Matrix client config from the database. // Returns sql.ErrNoRows if the client isn't in the database. func (d *ServiceDB) LoadMatrixClientConfig(userID string) (config api.ClientConfig, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { config, err = selectMatrixClientConfigTxn(txn, userID) return err }) return } // UpdateNextBatch updates the next_batch token for the given user. func (d *ServiceDB) UpdateNextBatch(userID, nextBatch string) (err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { return updateNextBatchTxn(txn, userID, nextBatch) }) return } // LoadNextBatch loads the next_batch token for the given user. func (d *ServiceDB) LoadNextBatch(userID string) (nextBatch string, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { nextBatch, err = selectNextBatchTxn(txn, userID) return err }) return } // LoadService loads a service from the database. // Returns sql.ErrNoRows if the service isn't in the database. func (d *ServiceDB) LoadService(serviceID string) (service types.Service, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { service, err = selectServiceTxn(txn, serviceID) return err }) return } // DeleteService deletes the given service from the database. func (d *ServiceDB) DeleteService(serviceID string) (err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { return deleteServiceTxn(txn, serviceID) }) return } // LoadServicesForUser loads all the bot services configured for a given user. // Returns an empty list if there aren't any services configured. func (d *ServiceDB) LoadServicesForUser(serviceUserID string) (services []types.Service, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { services, err = selectServicesForUserTxn(txn, serviceUserID) if err != nil { return err } return nil }) return } // LoadServicesByType loads all the bot services configured for a given type. // Returns an empty list if there aren't any services configured. func (d *ServiceDB) LoadServicesByType(serviceType string) (services []types.Service, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { services, err = selectServicesByTypeTxn(txn, serviceType) if err != nil { return err } return nil }) return } // StoreService stores a service into the database either by inserting a new // service or updating an existing service. Returns the old service if there // was one. func (d *ServiceDB) StoreService(service types.Service) (oldService types.Service, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { oldService, err = selectServiceTxn(txn, service.ServiceID()) if err == sql.ErrNoRows { return insertServiceTxn(txn, time.Now(), service) } else if err != nil { return err } else { return updateServiceTxn(txn, time.Now(), service) } }) return } // LoadAuthRealm loads an AuthRealm from the database. // Returns sql.ErrNoRows if the realm isn't in the database. func (d *ServiceDB) LoadAuthRealm(realmID string) (realm types.AuthRealm, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { realm, err = selectRealmTxn(txn, realmID) return err }) return } // LoadAuthRealmsByType loads all auth realms with the given type from the database. // The realms are ordered based on their realm ID. // Returns an empty list if there are no realms with that type. func (d *ServiceDB) LoadAuthRealmsByType(realmType string) (realms []types.AuthRealm, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { realms, err = selectRealmsByTypeTxn(txn, realmType) return err }) return } // StoreAuthRealm stores the given AuthRealm, clobbering based on the realm ID. // This function updates the time added/updated values. The previous realm, if any, is // returned. func (d *ServiceDB) StoreAuthRealm(realm types.AuthRealm) (old types.AuthRealm, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { old, err = selectRealmTxn(txn, realm.ID()) if err == sql.ErrNoRows { return insertRealmTxn(txn, time.Now(), realm) } else if err != nil { return err } else { return updateRealmTxn(txn, time.Now(), realm) } }) return } // StoreAuthSession stores the given AuthSession, clobbering based on the tuple of // user ID and realm ID. This function updates the time added/updated values. // The previous session, if any, is returned. func (d *ServiceDB) StoreAuthSession(session types.AuthSession) (old types.AuthSession, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { old, err = selectAuthSessionByUserTxn(txn, session.RealmID(), session.UserID()) if err == sql.ErrNoRows { return insertAuthSessionTxn(txn, time.Now(), session) } else if err != nil { return err } else { return updateAuthSessionTxn(txn, time.Now(), session) } }) return } // RemoveAuthSession removes the auth session for the given user on the given realm. // No error is returned if the session did not exist in the first place. func (d *ServiceDB) RemoveAuthSession(realmID, userID string) error { return runTransaction(d.db, func(txn *sql.Tx) error { return deleteAuthSessionTxn(txn, realmID, userID) }) } // LoadAuthSessionByUser loads an AuthSession from the database based on the given // realm and user ID. // Returns sql.ErrNoRows if the session isn't in the database. func (d *ServiceDB) LoadAuthSessionByUser(realmID, userID string) (session types.AuthSession, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { session, err = selectAuthSessionByUserTxn(txn, realmID, userID) return err }) return } // LoadAuthSessionByID loads an AuthSession from the database based on the given // realm and session ID. // Returns sql.ErrNoRows if the session isn't in the database. func (d *ServiceDB) LoadAuthSessionByID(realmID, sessionID string) (session types.AuthSession, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { session, err = selectAuthSessionByIDTxn(txn, realmID, sessionID) return err }) return } // LoadBotOptions loads bot options from the database. // Returns sql.ErrNoRows if the bot options isn't in the database. func (d *ServiceDB) LoadBotOptions(userID, roomID string) (opts types.BotOptions, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { opts, err = selectBotOptionsTxn(txn, userID, roomID) return err }) return } // StoreBotOptions stores a BotOptions into the database either by inserting a new // bot options or updating an existing bot options. Returns the old bot options if there // was one. func (d *ServiceDB) StoreBotOptions(opts types.BotOptions) (oldOpts types.BotOptions, err error) { err = runTransaction(d.db, func(txn *sql.Tx) error { oldOpts, err = selectBotOptionsTxn(txn, opts.UserID, opts.RoomID) if err == sql.ErrNoRows { return insertBotOptionsTxn(txn, time.Now(), opts) } else if err != nil { return err } else { return updateBotOptionsTxn(txn, time.Now(), opts) } }) return } // InsertFromConfig inserts entries from the config file into the database. This only really // makes sense for in-memory databases. func (d *ServiceDB) InsertFromConfig(cfg *api.ConfigFile) error { // Insert clients for _, cli := range cfg.Clients { if _, err := d.StoreMatrixClientConfig(cli); err != nil { return err } } // Keep a map of realms for inserting sessions realms := map[string]types.AuthRealm{} // by realm ID // Insert realms for _, r := range cfg.Realms { if err := r.Check(); err != nil { return err } realm, err := types.CreateAuthRealm(r.ID, r.Type, r.Config) if err != nil { return err } if _, err := d.StoreAuthRealm(realm); err != nil { return err } realms[realm.ID()] = realm } // Insert sessions for _, s := range cfg.Sessions { if err := s.Check(); err != nil { return err } r := realms[s.RealmID] if r == nil { return fmt.Errorf("Session %s specifies an unknown realm ID %s", s.SessionID, s.RealmID) } session := r.AuthSession(s.SessionID, s.UserID, s.RealmID) // dump the raw JSON config directly into the session. This is what // selectAuthSessionByUserTxn does. if err := json.Unmarshal(s.Config, session); err != nil { return err } if _, err := d.StoreAuthSession(session); err != nil { return err } } // Do not insert services yet, they require more work to set up. return nil } func runTransaction(db *sql.DB, fn func(txn *sql.Tx) error) (err error) { txn, err := db.Begin() if err != nil { return } defer func() { if r := recover(); r != nil { txn.Rollback() panic(r) } else if err != nil { txn.Rollback() } else { err = txn.Commit() } }() err = fn(txn) return }