307 lines
10 KiB
Go
307 lines
10 KiB
Go
// Command botcheck 是 bot 客户端验证工具（开发用，非生产组件）。
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//
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// 它用 BotFather 发的 token 经 auth.importBotAuthorization 登录本地 telesrv，
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// 自检 bot 身份 / updates 状态 / userFull.bot_info，并可选以 echo 模式持续回显
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// 收到的私聊消息，验证 bot 收发闭环（在线推送 → bot 处理 → bot 回复）。
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//
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// 用法：
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//
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// go run ./cmd/bots/botcheck -token "<bot_id>:<secret>" # 仅登录自检
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// go run ./cmd/bots/botcheck -token "<bot_id>:<secret>" -echo # 自检后持续 echo
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//
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// 以 obfuscated TCP 连接生产 telesrv：server 会逐连接自动区分 plain/obfuscated；
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// 此探针靠 DCOption.TCPObfuscatedOnly=true 让 gotd 客户端选择 MTProto TCP obfuscation。
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package main
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import (
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"context"
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"crypto/rand"
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"encoding/binary"
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"flag"
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"fmt"
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"net"
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"os"
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"os/signal"
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"strconv"
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"syscall"
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"time"
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"go.uber.org/zap"
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"github.com/gotd/log/logzap"
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"github.com/iamxvbaba/td/exchange"
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"github.com/iamxvbaba/td/mtproxy"
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"github.com/iamxvbaba/td/mtproxy/obfuscator"
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"github.com/iamxvbaba/td/proto/codec"
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"github.com/iamxvbaba/td/telegram"
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"github.com/iamxvbaba/td/telegram/dcs"
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"github.com/iamxvbaba/td/tg"
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"github.com/iamxvbaba/td/transport"
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"telesrv/internal/mtprotoedge"
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)
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// obfuscatedResolver 用标准无-secret MTProto TCP obfuscation（obfuscated2）连接，
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// 匹配 telesrv 生产 server 自动检测后的 obfuscated2.Accept(conn, nil) 路径。
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// gotd 内置 dcs.Plain 的 obfuscated 路径走 MTProxy（强制 secret），不适用这里。
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type obfuscatedResolver struct {
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host string
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port int
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}
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func (r obfuscatedResolver) dial(ctx context.Context, dc int) (transport.Conn, error) {
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var d net.Dialer
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conn, err := d.DialContext(ctx, "tcp", net.JoinHostPort(r.host, strconv.Itoa(r.port)))
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if err != nil {
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return nil, err
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}
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// obfuscated2 握手携带 intermediate codec 的 init tag；空 secret = 标准 obfuscation。
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obf := obfuscator.Obfuscated2(rand.Reader, conn)
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if err := obf.Handshake(codec.IntermediateClientStart, dc, mtproxy.Secret{}); err != nil {
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_ = conn.Close()
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return nil, fmt.Errorf("obfuscated2 handshake: %w", err)
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}
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// NoHeader：tag 已由 obf 握手发出，codec 不再重发。
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proto := transport.NewProtocol(func() transport.Codec {
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return codec.NoHeader{Codec: codec.Intermediate{}}
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})
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tc, err := proto.Handshake(obf)
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if err != nil {
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_ = conn.Close()
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return nil, fmt.Errorf("transport handshake: %w", err)
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}
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return tc, nil
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}
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func (r obfuscatedResolver) Primary(ctx context.Context, dc int, _ dcs.List) (transport.Conn, error) {
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return r.dial(ctx, dc)
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}
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func (r obfuscatedResolver) MediaOnly(ctx context.Context, dc int, _ dcs.List) (transport.Conn, error) {
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return r.dial(ctx, dc)
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}
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func (r obfuscatedResolver) CDN(ctx context.Context, dc int, _ dcs.List) (transport.Conn, error) {
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return r.dial(ctx, dc)
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}
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func main() {
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addr := flag.String("addr", "127.0.0.1:2398", "telesrv MTProto 地址")
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dcID := flag.Int("dc", 2, "DC id")
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token := flag.String("token", os.Getenv("TELESRV_BOT_TOKEN"), "bot token <bot_id>:<secret>，默认取 env TELESRV_BOT_TOKEN")
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rsaPath := flag.String("rsa", "data/server_rsa.pem", "server RSA key 路径（仅读 public key）")
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apiID := flag.Int("api-id", 1, "api_id")
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apiHash := flag.String("api-hash", "hash", "api_hash")
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echo := flag.Bool("echo", false, "登录后持续 echo 收到的私聊消息")
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sendTo := flag.Int64("send-to", 0, "主动发送目标 user_id（验证 bot 主动发起消息）")
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sendText := flag.String("send-text", "", "主动发送的文本")
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runFor := flag.Duration("for", 0, "echo 模式运行时长，0=直到 Ctrl+C")
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flag.Parse()
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if *token == "" {
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fmt.Fprintln(os.Stderr, "缺少 -token（或设环境变量 TELESRV_BOT_TOKEN）")
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os.Exit(2)
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}
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logger, _ := zap.NewDevelopment()
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defer func() { _ = logger.Sync() }()
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priv, err := mtprotoedge.LoadOrGenerateRSAKey(*rsaPath)
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if err != nil {
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logger.Fatal("加载 RSA key 失败", zap.Error(err))
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}
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host, portStr, err := net.SplitHostPort(*addr)
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if err != nil {
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logger.Fatal("解析地址失败", zap.Error(err))
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}
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port, err := strconv.Atoi(portStr)
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if err != nil {
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logger.Fatal("解析端口失败", zap.Error(err))
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}
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var client *telegram.Client
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handler := telegram.UpdateHandlerFunc(func(ctx context.Context, u tg.UpdatesClass) error {
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if !*echo {
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return nil
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}
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return echoUpdates(ctx, tg.NewClient(client), u, logger)
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})
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client = telegram.NewClient(*apiID, *apiHash, telegram.Options{
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PublicKeys: []exchange.PublicKey{{RSA: &priv.PublicKey}},
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Resolver: obfuscatedResolver{host: host, port: port},
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DCList: dcs.List{Options: []tg.DCOption{
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{ID: *dcID, IPAddress: host, Port: port, Static: true},
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}},
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Logger: logzap.New(logger.Named("client")),
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UpdateHandler: handler,
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})
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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if err := client.Run(ctx, func(ctx context.Context) error {
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raw := tg.NewClient(client)
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authz, err := raw.AuthImportBotAuthorization(ctx, &tg.AuthImportBotAuthorizationRequest{
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APIID: *apiID, APIHash: *apiHash, BotAuthToken: *token,
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})
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if err != nil {
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return fmt.Errorf("importBotAuthorization: %w", err)
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}
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a, ok := authz.(*tg.AuthAuthorization)
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if !ok {
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return fmt.Errorf("authorization 类型 = %T，want *tg.AuthAuthorization", authz)
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}
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self, ok := a.User.(*tg.User)
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if !ok {
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return fmt.Errorf("self 类型 = %T，want *tg.User", a.User)
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}
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ver, hasVer := self.GetBotInfoVersion()
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fmt.Println("==== 登录成功 ====")
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fmt.Printf(" id=%d username=@%s name=%q bot=%v self=%v bot_info_version=%d(present=%v)\n",
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self.ID, self.Username, self.FirstName, self.Bot, self.Self, ver, hasVer)
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if !self.Bot || !hasVer {
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fmt.Println(" [警告] self 缺 bot flag 或 bot_info_version —— TDesktop 不会当 bot 处理")
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}
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if _, hasStatus := self.GetStatus(); hasStatus {
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fmt.Println(" [警告] bot 携带 status —— 官方 bot 不应有 presence")
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}
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if self.Phone != "" {
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fmt.Printf(" [警告] bot 携带 phone=%q —— 官方 bot 无手机号\n", self.Phone)
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}
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state, err := raw.UpdatesGetState(ctx)
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if err != nil {
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return fmt.Errorf("getState: %w", err)
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}
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fmt.Printf(" getState: pts=%d qts=%d date=%d seq=%d\n", state.Pts, state.Qts, state.Date, state.Seq)
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full, err := raw.UsersGetFullUser(ctx, &tg.InputUserSelf{})
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if err != nil {
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return fmt.Errorf("getFullUser: %w", err)
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}
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if bi, ok := full.FullUser.GetBotInfo(); ok {
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uid, _ := bi.GetUserID()
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desc, _ := bi.GetDescription()
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cmds, _ := bi.GetCommands()
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fmt.Printf(" bot_info: user_id=%d description=%q commands=%d\n", uid, desc, len(cmds))
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if uid != self.ID {
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fmt.Printf(" [警告] bot_info.user_id=%d != self.id=%d —— TDesktop 会整体忽略 bot_info\n", uid, self.ID)
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}
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for _, c := range cmds {
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fmt.Printf(" /%s - %s\n", c.Command, c.Description)
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}
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} else {
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fmt.Println(" [警告] userFull 缺 bot_info —— TDesktop 会反复重拉 getFullUser")
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}
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fmt.Println("==== 自检通过 ====")
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// 主动发起：bot 主动给指定用户发消息（用户须先与 bot 交互过）。
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// access_hash 经 getUsers 解析（bot 重新登录时手里没有该用户的 update）。
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if *sendTo != 0 && *sendText != "" {
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target := &tg.InputPeerUser{UserID: *sendTo}
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if list, err := raw.UsersGetUsers(ctx, []tg.InputUserClass{&tg.InputUser{UserID: *sendTo}}); err == nil {
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for _, uc := range list {
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if u, ok := uc.(*tg.User); ok && u.ID == *sendTo {
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target.AccessHash = u.AccessHash
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fmt.Printf(" 解析目标用户: id=%d username=@%s name=%q\n", u.ID, u.Username, u.FirstName)
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}
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}
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} else {
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fmt.Printf(" [警告] getUsers(%d) 失败: %v（仍尝试 access_hash=0 发送）\n", *sendTo, err)
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}
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rid, _ := randInt64()
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if _, err := raw.MessagesSendMessage(ctx, &tg.MessagesSendMessageRequest{
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Peer: target,
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Message: *sendText,
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RandomID: rid,
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}); err != nil {
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return fmt.Errorf("主动发送: %w", err)
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}
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fmt.Printf(">> 已主动发送给 %d: %q\n", *sendTo, *sendText)
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}
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if !*echo {
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return nil
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}
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fmt.Println(">> echo 模式：从 TDesktop/Android 给这个 bot 发私聊消息，bot 会回 \"echo: <原文>\"")
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if *runFor > 0 {
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fmt.Printf(">> 运行 %s 后自动退出（或 Ctrl+C）\n", *runFor)
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t := time.NewTimer(*runFor)
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defer t.Stop()
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select {
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case <-ctx.Done():
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case <-t.C:
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}
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return nil
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}
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fmt.Println(">> Ctrl+C 退出")
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<-ctx.Done()
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return nil
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}); err != nil {
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logger.Fatal("运行失败", zap.Error(err))
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}
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fmt.Println("已退出")
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}
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// echoUpdates 解析推送的 updates，对收到的 incoming 私聊消息回 "echo: <原文>"。
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func echoUpdates(ctx context.Context, raw *tg.Client, u tg.UpdatesClass, logger *zap.Logger) error {
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var ups []tg.UpdateClass
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var users []tg.UserClass
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switch v := u.(type) {
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case *tg.Updates:
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ups, users = v.Updates, v.Users
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case *tg.UpdatesCombined:
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ups, users = v.Updates, v.Users
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case *tg.UpdateShort:
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ups = []tg.UpdateClass{v.Update}
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default:
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return nil
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}
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hashByID := make(map[int64]int64, len(users))
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for _, uc := range users {
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if usr, ok := uc.(*tg.User); ok {
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hashByID[usr.ID] = usr.AccessHash
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}
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}
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for _, up := range ups {
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nm, ok := up.(*tg.UpdateNewMessage)
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if !ok {
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continue
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}
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msg, ok := nm.Message.(*tg.Message)
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if !ok || msg.Out {
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continue
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}
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peer, ok := msg.PeerID.(*tg.PeerUser)
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if !ok {
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continue
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}
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from := peer.UserID
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fmt.Printf("<< 收到来自 %d: %q\n", from, msg.Message)
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rid, _ := randInt64()
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if _, err := raw.MessagesSendMessage(ctx, &tg.MessagesSendMessageRequest{
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Peer: &tg.InputPeerUser{UserID: from, AccessHash: hashByID[from]},
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Message: "echo: " + msg.Message,
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RandomID: rid,
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}); err != nil {
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logger.Warn("echo 回复失败", zap.Int64("to", from), zap.Error(err))
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continue
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}
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fmt.Printf(">> 已回复 %d: %q\n", from, "echo: "+msg.Message)
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}
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return nil
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}
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func randInt64() (int64, error) {
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var b [8]byte
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if _, err := rand.Read(b[:]); err != nil {
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return time.Now().UnixNano(), err
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}
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v := int64(binary.LittleEndian.Uint64(b[:]))
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if v == 0 {
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v = 1
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}
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return v, nil
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}
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