diff --git a/.env.example b/.env.example index a8886bb..947cd56 100644 --- a/.env.example +++ b/.env.example @@ -1,5 +1,10 @@ -PHONE=+1234567890 -API_ID=123456789 -API_HASH=0123456789abcdef0123456789abcdef +# TG_PHONE is phone number in international format. +# Like +4123456789. +TG_PHONE=your_telegram_phone_number + +# APP_HASH, APP_ID is from https://my.telegram.org/. +APP_ID=your_app_id +APP_HASH=your_app_hash + SOURCE_GROUP_ID=-123456789 TARGET_GROUP_ID=-123456789 diff --git a/.gitignore b/.gitignore index 5f60ac5..089a213 100644 --- a/.gitignore +++ b/.gitignore @@ -1,164 +1,36 @@ -# Byte-compiled / optimized / DLL files -__pycache__/ -*.py[cod] -*$py.class +.idea -# C extensions + + +# If you prefer the allow list template instead of the deny list, see community template: +# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore +# +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll *.so +*.dylib -# Distribution / packaging -.Python -build/ -develop-eggs/ -dist/ -downloads/ -eggs/ -.eggs/ -lib/ -lib64/ -parts/ -sdist/ -var/ -wheels/ -share/python-wheels/ -*.egg-info/ -.installed.cfg -*.egg -MANIFEST +# Test binary, built with `go test -c` +*.test -# PyInstaller -# Usually these files are written by a python script from a template -# before PyInstaller builds the exe, so as to inject date/other infos into it. -*.manifest -*.spec +# Code coverage profiles and other test artifacts +*.out +coverage.* +*.coverprofile +profile.cov -# Installer logs -pip-log.txt -pip-delete-this-directory.txt +# Dependency directories (remove the comment below to include it) +# vendor/ -# Unit test / coverage reports -htmlcov/ -.tox/ -.nox/ -.coverage -.coverage.* -.cache -nosetests.xml -coverage.xml -*.cover -*.py,cover -.hypothesis/ -.pytest_cache/ -cover/ +# Go workspace file +go.work +go.work.sum -# Translations -*.mo -*.pot - -# Django stuff: -*.log -local_settings.py -db.sqlite3 -db.sqlite3-journal - -# Flask stuff: -instance/ -.webassets-cache - -# Scrapy stuff: -.scrapy - -# Sphinx documentation -docs/_build/ - -# PyBuilder -.pybuilder/ -target/ - -# Jupyter Notebook -.ipynb_checkpoints - -# IPython -profile_default/ -ipython_config.py - -# pyenv -# For a library or package, you might want to ignore these files since the code is -# intended to run in multiple environments; otherwise, check them in: -# .python-version - -# pipenv -# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. -# However, in case of collaboration, if having platform-specific dependencies or dependencies -# having no cross-platform support, pipenv may install dependencies that don't work, or not -# install all needed dependencies. -#Pipfile.lock - -# poetry -# Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control. -# This is especially recommended for binary packages to ensure reproducibility, and is more -# commonly ignored for libraries. -# https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control -#poetry.lock - -# pdm -# Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control. -#pdm.lock -# pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it -# in version control. -# https://pdm.fming.dev/#use-with-ide -.pdm.toml - -# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm -__pypackages__/ - -# Celery stuff -celerybeat-schedule -celerybeat.pid - -# SageMath parsed files -*.sage.py - -# Environments +# env file .env -.venv -env/ -venv/ -ENV/ -env.bak/ -venv.bak/ -# Spyder project settings -.spyderproject -.spyproject - -# Rope project settings -.ropeproject - -# mkdocs documentation -/site - -# mypy -.mypy_cache/ -.dmypy.json -dmypy.json - -# Pyre type checker -.pyre/ - -# pytype static type analyzer -.pytype/ - -# Cython debug symbols -cython_debug/ - -# PyCharm -# JetBrains specific template is maintained in a separate JetBrains.gitignore that can -# be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore -# and can be added to the global gitignore or merged into this file. For a more nuclear -# option (not recommended) you can uncomment the following to ignore the entire idea folder. -#.idea/ - -.idea/ -*.session -*.session-journal \ No newline at end of file +# Editor/IDE +# .idea/ +# .vscode/ diff --git a/README.md b/README.md index f2a64db..34d2e38 100644 --- a/README.md +++ b/README.md @@ -1 +1,62 @@ -# forward-telegram-message \ No newline at end of file +# forward-telegram-message + +A Telegram message forwarder that forwards messages from a source chat to a target chat. + +This project is implemented in Go using the gotd/td Telegram client library. + +## Features + +- Forward messages from one Telegram chat to another +- Automatic reconnection on disconnect +- Proper error handling and logging +- Environment variable configuration + +## Requirements + +- Go 1.24 or higher +- Telegram API credentials (visit https://my.telegram.org/ to get them) + +## Installation + +1. Clone the repository: +```bash +git clone https://github.com/tiennm99/forward-telegram-message.git +cd forward-telegram-message +``` + +2. Install dependencies: +```bash +go mod tidy +``` + +## Configuration + +Create a `.env` file in the project root with the following content: + +```env +TG_PHONE=+1234567890 +API_ID=123456789 +API_HASH=0123456789abcdef0123456789abcdef +SOURCE_GROUP_ID=-123456789 +TARGET_GROUP_ID=-123456789 +``` + +Replace the values with your Telegram credentials and chat IDs. + +## Usage + +1. Install dependencies: +```bash +go mod tidy +``` + +2. Run the application: +```bash +go run . +``` + +The application will connect to Telegram and start forwarding messages from the source chat to the target chat. + +## The Original Python Version + +The original Python version of this project can be found at the `feature/python` branch. diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..9e174c7 --- /dev/null +++ b/go.mod @@ -0,0 +1,76 @@ +module github.com/tiennm99/forward-telegram-message + +go 1.24.0 + +toolchain go1.24.10 + +require ( + github.com/cockroachdb/pebble v1.1.5 + github.com/go-faster/errors v0.7.1 + github.com/gotd/contrib v0.21.1 + github.com/gotd/td v0.134.0 + github.com/gotd/td/examples v0.0.0-20251127112541-207a24e4aa3c + github.com/joho/godotenv v1.5.1 + go.etcd.io/bbolt v1.4.3 + go.uber.org/zap v1.27.1 + golang.org/x/time v0.14.0 + gopkg.in/natefinch/lumberjack.v2 v2.2.1 +) + +require ( + github.com/DataDog/zstd v1.4.5 // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cenkalti/backoff/v4 v4.3.0 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/cockroachdb/errors v1.11.3 // indirect + github.com/cockroachdb/fifo v0.0.0-20240606204812-0bbfbd93a7ce // indirect + github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect + github.com/cockroachdb/redact v1.1.5 // indirect + github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect + github.com/coder/websocket v1.8.14 // indirect + github.com/dlclark/regexp2 v1.11.5 // indirect + github.com/fatih/color v1.18.0 // indirect + github.com/getsentry/sentry-go v0.27.0 // indirect + github.com/ghodss/yaml v1.0.0 // indirect + github.com/go-faster/jx v1.2.0 // indirect + github.com/go-faster/xor v1.0.0 // indirect + github.com/go-faster/yaml v0.4.6 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/snappy v0.0.4 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/gotd/ige v0.2.2 // indirect + github.com/gotd/neo v0.1.5 // indirect + github.com/klauspost/compress v1.18.1 // indirect + github.com/kr/pretty v0.3.1 // indirect + github.com/kr/text v0.2.0 // indirect + github.com/mattn/go-colorable v0.1.14 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/ogen-go/ogen v1.16.0 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/client_golang v1.23.2 // indirect + github.com/prometheus/client_model v0.6.2 // indirect + github.com/prometheus/common v0.66.1 // indirect + github.com/prometheus/procfs v0.16.1 // indirect + github.com/rogpeppe/go-internal v1.14.1 // indirect + github.com/segmentio/asm v1.2.1 // indirect + github.com/shopspring/decimal v1.4.0 // indirect + go.opentelemetry.io/otel v1.38.0 // indirect + go.opentelemetry.io/otel/metric v1.38.0 // indirect + go.opentelemetry.io/otel/trace v1.38.0 // indirect + go.uber.org/atomic v1.11.0 // indirect + go.uber.org/multierr v1.11.0 // indirect + go.yaml.in/yaml/v2 v2.4.2 // indirect + golang.org/x/crypto v0.45.0 // indirect + golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 // indirect + golang.org/x/mod v0.30.0 // indirect + golang.org/x/net v0.47.0 // indirect + golang.org/x/sync v0.18.0 // indirect + golang.org/x/sys v0.38.0 // indirect + golang.org/x/term v0.37.0 // indirect + golang.org/x/text v0.31.0 // indirect + golang.org/x/tools v0.39.0 // indirect + google.golang.org/protobuf v1.36.8 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + rsc.io/qr v0.2.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..32a184c --- /dev/null +++ b/go.sum @@ -0,0 +1,194 @@ +github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ= +github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks 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"github.com/gotd/contrib/middleware/ratelimit" + "github.com/gotd/contrib/pebble" + "github.com/gotd/contrib/storage" + "github.com/joho/godotenv" + "go.etcd.io/bbolt" + "go.uber.org/zap" + "go.uber.org/zap/zapcore" + "golang.org/x/time/rate" + lj "gopkg.in/natefinch/lumberjack.v2" + + "github.com/gotd/td/examples" + "github.com/gotd/td/telegram" + "github.com/gotd/td/telegram/auth" + "github.com/gotd/td/telegram/message/peer" + "github.com/gotd/td/telegram/query" + "github.com/gotd/td/telegram/updates" + "github.com/gotd/td/tg" +) + +func sessionFolder(phone string) string { + var out []rune + for _, r := range phone { + if r >= '0' && r <= '9' { + out = append(out, r) + } + } + return "phone-" + string(out) +} + +func run(ctx context.Context) error { + var arg struct { + FillPeerStorage bool + } + flag.BoolVar(&arg.FillPeerStorage, "fill-peer-storage", false, "fill peer storage") + flag.Parse() + + // Using ".env" file to load environment variables. + if err := godotenv.Load(); err != nil && !os.IsNotExist(err) { + return errors.Wrap(err, "load env") + } + + // TG_PHONE is phone number in international format. + // Like +4123456789. + phone := os.Getenv("TG_PHONE") + if phone == "" { + return errors.New("no phone") + } + // APP_HASH, APP_ID is from https://my.telegram.org/. + appID, err := strconv.Atoi(os.Getenv("APP_ID")) + if err != nil { + return errors.Wrap(err, " parse app id") + } + appHash := os.Getenv("APP_HASH") + if appHash == "" { + return errors.New("no app hash") + } + + // Setting up session storage. + // This is needed to reuse session and not login every time. + sessionDir := filepath.Join("session", sessionFolder(phone)) + if err := os.MkdirAll(sessionDir, 0700); err != nil { + return err + } + logFilePath := filepath.Join(sessionDir, "log.jsonl") + + fmt.Printf("Storing session in %s, logs in %s\n", sessionDir, logFilePath) + + // Setting up logging to file with rotation. + // + // Log to file, so we don't interfere with prompts and messages to user. + logWriter := zapcore.AddSync(&lj.Logger{ + Filename: logFilePath, + MaxBackups: 3, + MaxSize: 1, // megabytes + MaxAge: 7, // days + }) + logCore := zapcore.NewCore( + zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()), + logWriter, + zap.DebugLevel, + ) + lg := zap.New(logCore) + defer func() { _ = lg.Sync() }() + + // So, we are storing session information in current directory, under subdirectory "session/phone_hash" + sessionStorage := &telegram.FileSessionStorage{ + Path: filepath.Join(sessionDir, "session.json"), + } + // Peer storage, for resolve caching and short updates handling. + db, err := pebbledb.Open(filepath.Join(sessionDir, "peers.pebble.db"), &pebbledb.Options{}) + if err != nil { + return errors.Wrap(err, "create pebble storage") + } + peerDB := pebble.NewPeerStorage(db) + lg.Info("Storage", zap.String("path", sessionDir)) + + // Setting up client. + // + // Dispatcher is used to register handlers for events. + dispatcher := tg.NewUpdateDispatcher() + // Setting up update handler that will fill peer storage before + // calling dispatcher handlers. + updateHandler := storage.UpdateHook(dispatcher, peerDB) + + // Setting up persistent storage for qts/pts to be able to + // recover after restart. + boltdb, err := bbolt.Open(filepath.Join(sessionDir, "updates.bolt.db"), 0666, nil) + if err != nil { + return errors.Wrap(err, "create bolt storage") + } + updatesRecovery := updates.New(updates.Config{ + Handler: updateHandler, // using previous handler with peerDB + Logger: lg.Named("updates.recovery"), + Storage: boltstor.NewStateStorage(boltdb), + }) + + // Handler of FLOOD_WAIT that will automatically retry request. + waiter := floodwait.NewWaiter().WithCallback(func(ctx context.Context, wait floodwait.FloodWait) { + // Notifying about flood wait. + lg.Warn("Flood wait", zap.Duration("wait", wait.Duration)) + fmt.Println("Got FLOOD_WAIT. Will retry after", wait.Duration) + }) + + // Filling client options. + options := telegram.Options{ + Logger: lg, // Passing logger for observability. + SessionStorage: sessionStorage, // Setting up session sessionStorage to store auth data. + UpdateHandler: updatesRecovery, // Setting up handler for updates from server. + Middlewares: []telegram.Middleware{ + // Setting up FLOOD_WAIT handler to automatically wait and retry request. + waiter, + // Setting up general rate limits to less likely get flood wait errors. + ratelimit.New(rate.Every(time.Millisecond*100), 5), + }, + } + client := telegram.NewClient(appID, appHash, options) + api := client.API() + + // Setting up resolver cache that will use peer storage. + resolver := storage.NewResolverCache(peer.Plain(api), peerDB) + // Usage: + // if _, err := resolver.ResolveDomain(ctx, "tdlibchat"); err != nil { + // return errors.Wrap(err, "resolve") + // } + _ = resolver + + // Registering handler for new private messages. + dispatcher.OnNewMessage(func(ctx context.Context, e tg.Entities, u *tg.UpdateNewMessage) error { + msg, ok := u.Message.(*tg.Message) + if !ok { + return nil + } + if msg.Out { + // Outgoing message. + return nil + } + + // Use PeerID to find peer because *Short updates does not contain any entities, so it necessary to + // store some entities. + // + // Storage can be filled using PeerCollector (i.e. fetching all dialogs first). + p, err := storage.FindPeer(ctx, peerDB, msg.GetPeerID()) + if err != nil { + return err + } + + fmt.Printf("%s: %s\n", p, msg.Message) + return nil + }) + + // Authentication flow handles authentication process, like prompting for code and 2FA password. + flow := auth.NewFlow(examples.Terminal{PhoneNumber: phone}, auth.SendCodeOptions{}) + + return waiter.Run(ctx, func(ctx context.Context) error { + // Spawning main goroutine. + if err := client.Run(ctx, func(ctx context.Context) error { + // Perform auth if no session is available. + if err := client.Auth().IfNecessary(ctx, flow); err != nil { + return errors.Wrap(err, "auth") + } + + // Getting info about current user. + self, err := client.Self(ctx) + if err != nil { + return errors.Wrap(err, "call self") + } + + name := self.FirstName + if self.Username != "" { + // Username is optional. + name = fmt.Sprintf("%s (@%s)", name, self.Username) + } + fmt.Println("Current user:", name) + + lg.Info("Login", + zap.String("first_name", self.FirstName), + zap.String("last_name", self.LastName), + zap.String("username", self.Username), + zap.Int64("id", self.ID), + ) + + if arg.FillPeerStorage { + fmt.Println("Filling peer storage from dialogs to cache entities") + collector := storage.CollectPeers(peerDB) + if err := collector.Dialogs(ctx, query.GetDialogs(api).Iter()); err != nil { + return errors.Wrap(err, "collect peers") + } + fmt.Println("Filled") + } + + // Waiting until context is done. + fmt.Println("Listening for updates. Interrupt (Ctrl+C) to stop.") + return updatesRecovery.Run(ctx, api, self.ID, updates.AuthOptions{ + IsBot: self.Bot, + OnStart: func(ctx context.Context) { + fmt.Println("Update recovery initialized and started, listening for events") + }, + }) + }); err != nil { + return errors.Wrap(err, "run") + } + return nil + }) +} + +func main() { + ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt) + defer cancel() + + if err := run(ctx); err != nil { + if errors.Is(err, context.Canceled) && ctx.Err() == context.Canceled { + fmt.Println("\rClosed") + os.Exit(0) + } + _, _ = fmt.Fprintf(os.Stderr, "Error: %+v\n", err) + os.Exit(1) + } else { + fmt.Println("Done") + os.Exit(0) + } +}