feat: initial commit of vps-commander release v1.0.0

2026-09-28 07:48:01 +08:00
commit 467e28a6a1
48 changed files with 3851 additions and 0 deletions
@@ -0,0 +1,190 @@
+package main
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"errors"
+	"flag"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"sync"
+	"time"
+
+	"github.com/gorilla/websocket"
+	"github.com/wjyhk/vps-commander/internal/cluster"
+	"github.com/wjyhk/vps-commander/internal/executor"
+)
+
+func main() {
+	hub := flag.String("hub", "", "Hub WebSocket URL")
+	name := flag.String("name", "", "device name")
+	token := flag.String("token", os.Getenv("VPS_COMMANDER_CLUSTER_SECRET"), "cluster secret")
+	insecure := flag.Bool("insecure", false, "skip TLS verification")
+	flag.Parse()
+	if *hub == "" || *name == "" || *token == "" {
+		log.Fatal("-hub, -name and -token are required")
+	}
+	backoff := time.Second
+	for {
+		if err := run(*hub, *name, *token, *insecure); err != nil {
+			log.Printf("agent connection: %v", err)
+		}
+		time.Sleep(backoff)
+		if backoff < 30*time.Second {
+			backoff *= 2
+			if backoff > 30*time.Second {
+				backoff = 30 * time.Second
+			}
+		}
+	}
+}
+
+func run(hub, name, token string, insecure bool) error {
+	u := hub + "?device_name=" + name
+	dialer := websocket.DefaultDialer
+	if insecure {
+		dialer = &websocket.Dialer{TLSClientConfig: &tls.Config{InsecureSkipVerify: true}}
+	}
+	header := http.Header{}
+	header.Set("Authorization", "Bearer "+token)
+	c, _, err := dialer.Dial(u, header)
+	if err != nil {
+		return err
+	}
+	defer c.Close()
+	var writeMu sync.Mutex
+	writeJSON := func(msg cluster.Message) error {
+		writeMu.Lock()
+		defer writeMu.Unlock()
+		if err := c.SetWriteDeadline(time.Now().Add(10 * time.Second)); err != nil {
+			return err
+		}
+		return c.WriteJSON(msg)
+	}
+	if err := c.SetReadDeadline(time.Now().Add(75 * time.Second)); err != nil {
+		return err
+	}
+	exec := executor.Local{MaxOutput: 1024 * 1024}
+	if err := writeJSON(cluster.Message{Event: "hello", Device: name, TS: time.Now().Unix()}); err != nil {
+		return err
+	}
+	stopPing := make(chan struct{})
+	defer close(stopPing)
+	go func() {
+		t := time.NewTicker(30 * time.Second)
+		defer t.Stop()
+		for {
+			select {
+			case <-t.C:
+				_ = writeJSON(cluster.Message{Event: "ping", Device: name, TS: time.Now().Unix()})
+			case <-stopPing:
+				return
+			}
+		}
+	}()
+	for {
+		var msg cluster.Message
+		if err := c.ReadJSON(&msg); err != nil {
+			return err
+		}
+		_ = c.SetReadDeadline(time.Now().Add(75 * time.Second))
+		if msg.Event == "registered" {
+			continue
+		}
+		if msg.Event == "ping" {
+			if err := writeJSON(cluster.Message{Event: "pong", Device: name, TS: msg.TS}); err != nil {
+				return err
+			}
+			continue
+		}
+		if msg.Action == "" || msg.ID == "" {
+			continue
+		}
+		go func(msg cluster.Message) {
+			if err := handle(writeJSON, exec, msg); err != nil {
+				log.Printf("request %s failed: %v", msg.ID, err)
+				_ = c.Close()
+			}
+		}(msg)
+	}
+}
+
+func handle(writeJSON func(cluster.Message) error, exec executor.Local, msg cluster.Message) error {
+	switch msg.Action {
+	case "exec":
+		var p cluster.ExecPayload
+		if err := decodePayload(msg.Payload, &p); err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		timeout := p.Timeout
+		if timeout <= 0 {
+			timeout = 30
+		}
+		if timeout > 300 {
+			timeout = 300
+		}
+		ctx, cancel := context.WithTimeout(context.Background(), time.Duration(timeout)*time.Second)
+		res := exec.Run(ctx, p.Command, p.Workdir)
+		cancel()
+		return writeJSON(cluster.Message{ID: msg.ID, Status: "success", ExitCode: res.ExitCode, Stdout: res.Stdout, Stderr: res.Stderr, DurationMS: res.DurationMS})
+	case "file_read":
+		var p cluster.FileReadPayload
+		if err := decodePayload(msg.Payload, &p); err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		if p.Offset < 0 {
+			return sendError(writeJSON, msg.ID, errors.New("negative offset"))
+		}
+		f, err := os.Open(p.Path)
+		if err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		defer f.Close()
+		info, err := f.Stat()
+		if err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		if _, err = f.Seek(p.Offset, io.SeekStart); err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		limit := p.Limit
+		if limit <= 0 || limit > 1024*1024 {
+			limit = 256 * 1024
+		}
+		buf := make([]byte, limit)
+		n, err := io.ReadFull(f, buf)
+		eof := err == io.EOF || err == io.ErrUnexpectedEOF
+		if err != nil && !eof {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		return writeJSON(cluster.Message{ID: msg.ID, Status: "success", Payload: map[string]any{"content": string(buf[:n]), "bytes": n, "total_size": info.Size(), "has_more": p.Offset+int64(n) < info.Size(), "eof": eof}})
+	case "file_write":
+		var p cluster.FileWritePayload
+		if err := decodePayload(msg.Payload, &p); err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		if len(p.Content) > 1024*1024 {
+			return sendError(writeJSON, msg.ID, errors.New("content too large"))
+		}
+		if err := os.WriteFile(p.Path, []byte(p.Content), 0644); err != nil {
+			return sendError(writeJSON, msg.ID, err)
+		}
+		return writeJSON(cluster.Message{ID: msg.ID, Status: "success", Payload: map[string]any{"bytes": len(p.Content)}})
+	default:
+		return sendError(writeJSON, msg.ID, errors.New("unsupported action"))
+	}
+}
+
+func decodePayload(v any, out any) error {
+	b, err := json.Marshal(v)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(b, out)
+}
+func sendError(writeJSON func(cluster.Message) error, id string, err error) error {
+	return writeJSON(cluster.Message{ID: id, Status: "error", Error: err.Error()})
+}