server

cmd/cli/commands/list/list.go

@@ -12,20 +12,18 @@ import (
 
 type (
 	ListCmd struct {
-		name string
 	}
 )
 
 func (*ListCmd) Name() string     { return "list" }
 func (*ListCmd) Synopsis() string { return "list all game registered" }
 func (*ListCmd) Usage() string {
-	return `add:
+	return `list:
   List all game registered
 `
 }
 
 func (p *ListCmd) SetFlags(f *flag.FlagSet) {
-	f.StringVar(&p.name, "name", "", "Override the name of the game")
 }
 
 func (p *ListCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {

cmd/cli/commands/sync/sync.go

@@ -2,7 +2,6 @@ package sync
 
 import (
 	"cloudsave/pkg/remote"
-	"cloudsave/pkg/sync/ssh"
 	"context"
 	"flag"
 	"fmt"
@@ -28,15 +27,15 @@ func (p *SyncCmd) SetFlags(f *flag.FlagSet) {
 }
 
 func (p *SyncCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
-	remotes, err := remote.All()
+	_, err := remote.All()
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "error: failed to load datastore:", err)
 		return subcommands.ExitFailure
 	}
 
-	for _, remote := range remotes {
+	/*for _, remote := range remotes {
-		ssh.SFTPSyncer{}.Sync(remote)
+
-	}
+	}*/
 
 	return subcommands.ExitSuccess
 }

cmd/cli/commands/version/version.go

@@ -0,0 +1,38 @@
+package version
+
+import (
+	"cloudsave/pkg/constants"
+	"context"
+	"flag"
+	"fmt"
+	"runtime"
+	"strconv"
+
+	"github.com/google/subcommands"
+)
+
+type (
+	VersionCmd struct {
+	}
+)
+
+func (*VersionCmd) Name() string     { return "version" }
+func (*VersionCmd) Synopsis() string { return "show version and system information" }
+func (*VersionCmd) Usage() string {
+	return `add:
+  Show version and system information
+`
+}
+
+func (p *VersionCmd) SetFlags(f *flag.FlagSet) {
+}
+
+func (p *VersionCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
+	fmt.Println("Client: CloudSave cli")
+	fmt.Println(" Version:       " + constants.Version)
+	fmt.Println(" API version:   " + strconv.Itoa(constants.ApiVersion))
+	fmt.Println(" Go version:    " + runtime.Version())
+	fmt.Println(" OS/Arch:       " + runtime.GOOS + "/" + runtime.GOARCH)
+
+	return subcommands.ExitSuccess
+}

cmd/cli/main.go

@@ -7,6 +7,7 @@ import (
 	"cloudsave/cmd/cli/commands/remove"
 	"cloudsave/cmd/cli/commands/run"
 	"cloudsave/cmd/cli/commands/sync"
+	"cloudsave/cmd/cli/commands/version"
 	"context"
 	"flag"
 	"os"
@@ -18,6 +19,7 @@ func main() {
 	subcommands.Register(subcommands.HelpCommand(), "help")
 	subcommands.Register(subcommands.FlagsCommand(), "help")
 	subcommands.Register(subcommands.CommandsCommand(), "help")
+	subcommands.Register(&version.VersionCmd{}, "help")
 
 	subcommands.Register(&add.AddCmd{}, "management")
 	subcommands.Register(&run.RunCmd{}, "management")

cmd/server/api/api.go

@@ -0,0 +1,181 @@
+package api
+
+import (
+	"cloudsave/pkg/game"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+)
+
+type (
+	HTTPServer struct {
+		Server       *http.Server
+		documentRoot string
+	}
+)
+
+// NewServer start the http server
+func NewServer(documentRoot string, creds map[string]string, port int) *HTTPServer {
+	if !filepath.IsAbs(documentRoot) {
+		panic("the document root is not an absolute path")
+	}
+	s := &HTTPServer{
+		documentRoot: documentRoot,
+	}
+	router := chi.NewRouter()
+	router.NotFound(func(writer http.ResponseWriter, request *http.Request) {
+		notFound("This route does not exist", writer, request)
+	})
+	router.MethodNotAllowed(func(writer http.ResponseWriter, request *http.Request) {
+		methodNotAllowed(writer, request)
+	})
+	router.Use(middleware.Logger)
+	router.Use(recoverMiddleware)
+	router.Use(middleware.Compress(5, "application/gzip"))
+	router.Use(BasicAuth("cloudsave", creds))
+	router.Use(middleware.Heartbeat("/heartbeat"))
+	router.Route("/api", func(routerAPI chi.Router) {
+		routerAPI.Route("/v1", func(r chi.Router) {
+			// Get information about the server
+			r.Get("/version", s.Information)
+			// Secured routes
+			r.Group(func(secureRouter chi.Router) {
+				// Save files routes
+				secureRouter.Route("/games", func(gameRouter chi.Router) {
+					// List all available saves
+					gameRouter.Get("/", s.all)
+					// Data routes
+					gameRouter.Group(func(uploadRouter chi.Router) {
+						uploadRouter.Post("/{id}/data", s.upload)
+						uploadRouter.Get("/{id}/data", s.download)
+					})
+				})
+			})
+		})
+	})
+	s.Server = &http.Server{
+		Addr:    fmt.Sprintf(":%d", port),
+		Handler: router,
+	}
+	return s
+}
+
+func (s HTTPServer) all(w http.ResponseWriter, r *http.Request) {
+	ds, err := os.ReadDir(s.documentRoot)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "failed to open datastore (", s.documentRoot, "):", err)
+		internalServerError(w, r)
+		return
+	}
+
+	datastore := make([]game.Metadata, 0)
+	for _, d := range ds {
+		content, err := os.ReadFile(filepath.Join(s.documentRoot, d.Name(), "metadata.json"))
+		if err != nil {
+			continue
+		}
+
+		var m game.Metadata
+		err = json.Unmarshal(content, &m)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "corrupted datastore: failed to parse %s/metadata.json: %s", d.Name(), err)
+			internalServerError(w, r)
+		}
+
+		datastore = append(datastore, m)
+	}
+
+	ok(datastore, w, r)
+}
+
+func (s HTTPServer) download(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	path := filepath.Clean(filepath.Join(s.documentRoot, "data", id))
+
+	sdir, err := os.Stat(path)
+	if err != nil {
+		notFound("id not found", w, r)
+		return
+	}
+
+	if !sdir.IsDir() {
+		notFound("id not found", w, r)
+		return
+	}
+
+	path = filepath.Join(path, "data.tar.gz")
+
+	f, err := os.OpenFile(path, os.O_RDONLY, 0)
+	if err != nil {
+		notFound("id not found", w, r)
+		return
+	}
+	defer f.Close()
+
+	// Get file info to set headers
+	fi, err := f.Stat()
+	if err != nil || fi.IsDir() {
+		internalServerError(w, r)
+		return
+	}
+
+	// Set headers
+	w.Header().Set("Content-Disposition", "attachment; filename=\"data.tar.gz\"")
+	w.Header().Set("Content-Type", "application/gzip")
+	w.Header().Set("Content-Length", strconv.FormatInt(fi.Size(), 10))
+	w.WriteHeader(200)
+
+	// Stream the file content
+	http.ServeContent(w, r, "data.tar.gz", fi.ModTime(), f)
+}
+
+func (s HTTPServer) upload(w http.ResponseWriter, r *http.Request) {
+	id := chi.URLParam(r, "id")
+	path := filepath.Clean(filepath.Join(s.documentRoot, "data", id, "data.tar.gz"))
+
+	// Limit max upload size (e.g., 500 MB)
+	r.Body = http.MaxBytesReader(w, r.Body, 500<<20)
+
+	// Parse multipart form
+	err := r.ParseMultipartForm(500 << 20) // 500 MB
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to load payload:", err)
+		badRequest("bad payload", w, r)
+		return
+	}
+
+	// Retrieve file
+	file, _, err := r.FormFile("payload")
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: cannot find payload in the form:", err)
+		badRequest("payload not found", w, r)
+		return
+	}
+	defer file.Close()
+
+	// Create destination file
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0640)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "error: failed to open file:", err)
+		internalServerError(w, r)
+		return
+	}
+	defer f.Close()
+
+	// Copy the uploaded content to the file
+	if _, err := io.Copy(f, file); err != nil {
+		fmt.Fprintln(os.Stderr, "error: an error occured while downloading data:", err)
+		internalServerError(w, r)
+		return
+	}
+
+	// Respond success
+	w.WriteHeader(http.StatusCreated)
+}

cmd/server/api/middlewares.go

@@ -0,0 +1,46 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+
+	"golang.org/x/crypto/bcrypt"
+)
+
+func recoverMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			err := recover()
+			if err != nil {
+				internalServerError(w, r)
+			}
+		}()
+		next.ServeHTTP(w, r)
+	})
+}
+
+// BasicAuth implements a simple middleware handler for adding basic http auth to a route.
+func BasicAuth(realm string, creds map[string]string) func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			user, pass, ok := r.BasicAuth()
+			if !ok {
+				basicAuthFailed(w, r, realm)
+				return
+			}
+
+			credPass := creds[user]
+			if err := bcrypt.CompareHashAndPassword([]byte(credPass), []byte(pass)); err != nil {
+				basicAuthFailed(w, r, realm)
+				return
+			}
+
+			next.ServeHTTP(w, r)
+		})
+	}
+}
+
+func basicAuthFailed(w http.ResponseWriter, r *http.Request, realm string) {
+	w.Header().Add("WWW-Authenticate", fmt.Sprintf(`Basic realm="%s"`, realm))
+	unauthorized(w, r)
+}

cmd/server/api/responses.go

@@ -0,0 +1,187 @@
+package api
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"time"
+)
+
+type (
+	httpCore struct {
+		Status    int       `json:"status"`
+		Timestamp time.Time `json:"timestamp"`
+		Path      string    `json:"path"`
+	}
+
+	httpError struct {
+		httpCore
+		Error   string `json:"error"`
+		Message string `json:"message"`
+	}
+
+	httpObject struct {
+		httpCore
+		Data any `json:"data"`
+	}
+)
+
+func internalServerError(w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		httpCore: httpCore{
+			Status:    http.StatusInternalServerError,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Internal Server Error",
+		Message: "The server encountered an unexpected condition that prevented it from fulfilling the request.",
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusInternalServerError)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func notFound(message string, w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		httpCore: httpCore{
+			Status:    http.StatusNotFound,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Not Found",
+		Message: message,
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusNotFound)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func methodNotAllowed(w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		httpCore: httpCore{
+			Status:    http.StatusMethodNotAllowed,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Method Not Allowed",
+		Message: "The server knows the request method, but the target resource doesn't support this method",
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusMethodNotAllowed)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func unauthorized(w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		httpCore: httpCore{
+			Status:    http.StatusUnauthorized,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Unauthorized",
+		Message: "The request has not been completed because it lacks valid authentication credentials for the requested resource.",
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.Header().Add("WWW-Authenticate", "Custom realm=\"loginUserHandler via /api/login\"")
+	w.WriteHeader(http.StatusUnauthorized)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func forbidden(w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		httpCore: httpCore{
+			Status:    http.StatusForbidden,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Forbidden",
+		Message: "The access is permanently forbidden and tied to the application logic, such as insufficient rights to a resource.",
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusForbidden)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func ok(obj interface{}, w http.ResponseWriter, r *http.Request) {
+	e := httpObject{
+		httpCore: httpCore{
+			Status:    http.StatusOK,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Data: obj,
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func badRequest(message string, w http.ResponseWriter, r *http.Request) {
+	e := httpError{
+		httpCore: httpCore{
+			Status:    http.StatusBadRequest,
+			Path:      r.RequestURI,
+			Timestamp: time.Now(),
+		},
+		Error:   "Bad Request",
+		Message: message,
+	}
+
+	payload, err := json.Marshal(e)
+	if err != nil {
+		log.Println(err)
+	}
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(http.StatusBadRequest)
+	_, err = w.Write(payload)
+	if err != nil {
+		log.Println(err)
+	}
+}

cmd/server/api/system.go

@@ -0,0 +1,26 @@
+package api
+
+import (
+	"cloudsave/pkg/constants"
+	"net/http"
+	"runtime"
+)
+
+type information struct {
+	Version        string `json:"version"`
+	APIVersion     int    `json:"api_version"`
+	GoVersion      string `json:"go_version"`
+	OSName         string `json:"os_name"`
+	OSArchitecture string `json:"os_architecture"`
+}
+
+func (s *HTTPServer) Information(w http.ResponseWriter, r *http.Request) {
+	info := information{
+		Version:        constants.Version,
+		APIVersion:     constants.ApiVersion,
+		GoVersion:      runtime.Version(),
+		OSName:         runtime.GOOS,
+		OSArchitecture: runtime.GOARCH,
+	}
+	ok(info, w, r)
+}

cmd/server/main.go

@@ -0,0 +1,19 @@
+//go:build !windows
+
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+const defaultDocumentRoot string = "/var/lib/cloudsave"
+
+func main() {
+	run()
+}
+
+func fatal(message string, exitCode int) {
+	fmt.Fprintln(os.Stderr, message)
+	os.Exit(exitCode)
+}

cmd/server/main_windows.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"cloudsave/pkg/tools/windows"
+	"os"
+)
+
+const defaultDocumentRoot string = "C:/ProgramData/CloudSave"
+
+func main() {
+	run()
+}
+
+func fatal(message string, exitCode int) {
+	windows.MessageBox(windows.NULL, message, "CloudSave", windows.MB_OK)
+	os.Exit(exitCode)
+}

cmd/server/runner.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"cloudsave/cmd/server/api"
+	"cloudsave/cmd/server/security/htpasswd"
+	"cloudsave/pkg/constants"
+	"flag"
+	"fmt"
+	"path/filepath"
+	"runtime"
+	"strconv"
+)
+
+func run() {
+	fmt.Printf("CloudSave server -- v%s.%s.%s\n\n", constants.Version, runtime.GOOS, runtime.GOARCH)
+
+	var documentRoot string
+	var port int
+	flag.StringVar(&documentRoot, "document-root", defaultDocumentRoot, "Define the path to the document root")
+	flag.IntVar(&port, "port", 8080, "Define the port of the server")
+	flag.Parse()
+
+	h, err := htpasswd.Open(filepath.Join(documentRoot, ".htpasswd"))
+	if err != nil {
+		fatal("failed to load .htpasswd: "+err.Error(), 1)
+	}
+
+	server := api.NewServer(documentRoot, h.Content(), port)
+
+	fmt.Println("starting server at :" + strconv.Itoa(port))
+	if err := server.Server.ListenAndServe(); err != nil {
+		fatal("failed to start server: "+err.Error(), 1)
+	}
+}

cmd/server/security/htpasswd/htpasswd.go

@@ -0,0 +1,37 @@
+package htpasswd
+
+import (
+	"os"
+	"strings"
+)
+
+type (
+	File struct {
+		data map[string]string
+	}
+)
+
+func Open(path string) (File, error) {
+	c, err := os.ReadFile(path)
+	if err != nil {
+		return File{}, err
+	}
+
+	f := File{
+		data: make(map[string]string),
+	}
+	creds := strings.Split(string(c), "\n")
+	for _, cred := range creds {
+		kv := strings.Split(cred, ":")
+		if len(kv) != 2 {
+			continue
+		}
+		f.data[kv[0]] = kv[1]
+	}
+
+	return f, nil
+}
+
+func (f File) Content() map[string]string {
+	return f.data
+}

go.mod

@@ -3,14 +3,7 @@ module cloudsave
 go 1.24
 
 require (
+	github.com/go-chi/chi/v5 v5.2.1
 	github.com/google/subcommands v1.2.0
-	github.com/pkg/sftp v1.13.9
 	golang.org/x/crypto v0.38.0
-	golang.org/x/term v0.32.0
-)
-
-require (
-	github.com/kr/fs v0.1.0 // indirect
-	github.com/stretchr/testify v1.10.0 // indirect
-	golang.org/x/sys v0.33.0 // indirect
 )

go.sum

@@ -1,91 +1,6 @@
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-chi/chi/v5 v5.2.1 h1:KOIHODQj58PmL80G2Eak4WdvUzjSJSm0vG72crDCqb8=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/go-chi/chi/v5 v5.2.1/go.mod h1:L2yAIGWB3H+phAw1NxKwWM+7eUH/lU8pOMm5hHcoops=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/subcommands v1.2.0 h1:vWQspBTo2nEqTUFita5/KeEWlUL8kQObDFbub/EN9oE=
 github.com/google/subcommands v1.2.0/go.mod h1:ZjhPrFU+Olkh9WazFPsl27BQ4UPiG37m3yTrtFlrHVk=
-github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8=
-github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
-github.com/pkg/sftp v1.13.9 h1:4NGkvGudBL7GteO3m6qnaQ4pC0Kvf0onSVc9gR3EWBw=
-github.com/pkg/sftp v1.13.9/go.mod h1:OBN7bVXdstkFFN/gdnHPUb5TE8eb8G1Rp9wCItqjkkA=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
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pkg/constants/constants.go

@@ -0,0 +1,5 @@
+package constants
+
+const Version = "0.0.1"
+
+const ApiVersion = 1

pkg/remote/sync.go

@@ -1,99 +0,0 @@
-package remote
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"path/filepath"
-	"syscall"
-
-	"github.com/pkg/sftp"
-	"golang.org/x/crypto/ssh"
-	"golang.org/x/term"
-)
-
-func ConnectWithKey(host, user string) (*sftp.Client, error) {
-	authMethods := loadSshKeys()
-
-	// Create SSH client configuration
-	config := &ssh.ClientConfig{
-		User: user,
-		Auth: authMethods,
-	}
-
-	return connect(host, config)
-}
-
-func ConnectWithPassword(host, user string) (*sftp.Client, error) {
-	fmt.Printf("%s@%s's password:", user, host)
-	bytePassword, err := term.ReadPassword(int(syscall.Stdin))
-	if err != nil {
-		return nil, err
-	}
-
-	// Create SSH client configuration
-	config := &ssh.ClientConfig{
-		User: user,
-		Auth: []ssh.AuthMethod{
-			ssh.Password(string(bytePassword)),
-		},
-	}
-
-	return connect(host, config)
-}
-
-func connect(host string, config *ssh.ClientConfig) (*sftp.Client, error) {
-	// Connect to the SSH server
-	conn, err := ssh.Dial("tcp", host, config)
-	if err != nil {
-		return nil, fmt.Errorf("cannot connect to ssh server: %w", err)
-	}
-	defer conn.Close()
-
-	// Open SFTP session
-	sftpClient, err := sftp.NewClient(conn)
-	if err != nil {
-		return nil, fmt.Errorf("cannot connect to ssh server: %w", err)
-	}
-	return sftpClient, nil
-}
-
-func loadSshKeys() []ssh.AuthMethod {
-	dirname, err := os.UserHomeDir()
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	var auths []ssh.AuthMethod
-	entries, err := os.ReadDir(filepath.Join(dirname, ".ssh"))
-	if err != nil {
-		return auths
-	}
-
-	for _, entry := range entries {
-		if entry.IsDir() {
-			continue
-		}
-		name := entry.Name()
-		keyPath := filepath.Join(dirname, name)
-		keyData, err := os.ReadFile(keyPath)
-		if err != nil {
-			continue
-		}
-		signer, err := ssh.ParsePrivateKey(keyData)
-		if err != nil {
-			fmt.Printf("%s's passphrase:", entry.Name())
-			bytePassword, err := term.ReadPassword(int(syscall.Stdin))
-			if err != nil {
-				continue
-			}
-			signer, err = ssh.ParsePrivateKeyWithPassphrase(keyData, bytePassword)
-			if err != nil {
-				continue
-			}
-		}
-		auths = append(auths, ssh.PublicKeys(signer))
-	}
-
-	return auths
-}

pkg/sync/ssh/ssh.go

@@ -1,32 +0,0 @@
-package ssh
-
-import (
-	"cloudsave/pkg/remote"
-	"fmt"
-	"log"
-	"os/user"
-)
-
-type (
-	SFTPSyncer struct {
-	}
-)
-
-func (SFTPSyncer) Sync(r remote.Remote) error {
-	currentUser, err := user.Current()
-	if err != nil {
-		log.Fatalf("Failed to get current user: %v", err)
-	}
-	cli, err := remote.ConnectWithKey(r.URL, currentUser.Username)
-	if err != nil {
-		cli, err = remote.ConnectWithPassword(r.URL, currentUser.Username)
-		if err != nil {
-			return fmt.Errorf("failed to connect to host: %w", err)
-		}
-	}
-	defer cli.Close()
-
-	
-
-	return nil
-}

pkg/tools/windows/windows_windows.go

@@ -0,0 +1,22 @@
+package windows
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+const (
+	NULL  = 0
+	MB_OK = 0
+)
+
+// MessageBox of Win32 API.
+func MessageBox(hwnd uintptr, caption, title string, flags uint) int {
+	ret, _, _ := syscall.NewLazyDLL("user32.dll").NewProc("MessageBoxW").Call(
+		uintptr(hwnd),
+		uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(caption))),
+		uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(title))),
+		uintptr(flags))
+
+	return int(ret)
+}