package command import ( "archive/tar" "archive/zip" "bytes" "compress/gzip" "context" "crypto/md5" "encoding/hex" "encoding/json" "fmt" "io" "net/http" "os" "path/filepath" "runtime" "strings" "time" "github.com/seaweedfs/seaweedfs/weed/glog" "github.com/seaweedfs/seaweedfs/weed/util" "golang.org/x/net/context/ctxhttp" ) //copied from https://github.com/restic/restic/tree/master/internal/selfupdate // Release collects data about a single release on GitHub. type Release struct { Name string `json:"name"` TagName string `json:"tag_name"` Draft bool `json:"draft"` PreRelease bool `json:"prerelease"` PublishedAt time.Time `json:"published_at"` Assets []Asset `json:"assets"` Version string `json:"-"` // set manually in the code } // Asset is a file uploaded and attached to a release. type Asset struct { ID int `json:"id"` Name string `json:"name"` URL string `json:"url"` } const githubAPITimeout = 30 * time.Second // githubError is returned by the GitHub API, e.g. for rate-limiting. type githubError struct { Message string } // default version is not full version var isFullVersion = false var ( updateOpt UpdateOptions ) type UpdateOptions struct { dir *string name *string Version *string } func init() { path, _ := os.Executable() _, name := filepath.Split(path) updateOpt.dir = cmdUpdate.Flag.String("dir", filepath.Dir(path), "directory to save new weed.") updateOpt.name = cmdUpdate.Flag.String("name", name, "name of new weed. On windows, name shouldn't be same to the original name.") updateOpt.Version = cmdUpdate.Flag.String("version", "0", "specific version of weed you want to download. If not specified, get the latest version.") cmdUpdate.Run = runUpdate } var cmdUpdate = &Command{ UsageLine: "update [-dir=/path/to/dir] [-name=name] [-version=x.xx]", Short: "get latest or specific version from https://github.com/seaweedfs/seaweedfs", Long: `get latest or specific version from https://github.com/seaweedfs/seaweedfs`, } func runUpdate(cmd *Command, args []string) bool { path, _ := os.Executable() _, name := filepath.Split(path) if *updateOpt.dir != "" { if err := util.TestFolderWritable(util.ResolvePath(*updateOpt.dir)); err != nil { glog.Fatalf("Check Folder(-dir) Writable %s : %s", *updateOpt.dir, err) return false } } else { *updateOpt.dir = filepath.Dir(path) } if *updateOpt.name == "" { *updateOpt.name = name } target := filepath.Join(*updateOpt.dir, *updateOpt.name) if runtime.GOOS == "windows" { if target == path { glog.Fatalf("On windows, name of the new weed shouldn't be same to the original name.") return false } } glog.V(0).Infof("new weed will be saved to %s", target) _, err := downloadRelease(context.Background(), target, *updateOpt.Version) if err != nil { glog.Errorf("unable to download weed: %v", err) return false } return true } func downloadRelease(ctx context.Context, target string, ver string) (version string, err error) { currentVersion := util.VERSION_NUMBER rel, err := GitHubLatestRelease(ctx, ver, "seaweedfs", "seaweedfs") if err != nil { return "", err } if rel.Version == currentVersion { if ver == "0" { glog.V(0).Infof("weed is up to date") } else { glog.V(0).Infof("no need to download the same version of weed ") } return currentVersion, nil } glog.V(0).Infof("download version: %s", rel.Version) largeDiskSuffix := "" if util.VolumeSizeLimitGB == 8000 { largeDiskSuffix = "_large_disk" } fullSuffix := "" if isFullVersion { fullSuffix = "_full" } ext := "tar.gz" if runtime.GOOS == "windows" { ext = "zip" } suffix := fmt.Sprintf("%s_%s%s%s.%s", runtime.GOOS, runtime.GOARCH, fullSuffix, largeDiskSuffix, ext) md5Filename := fmt.Sprintf("%s.md5", suffix) _, md5Val, err := getGithubDataFile(ctx, rel.Assets, md5Filename) if err != nil { return "", err } downloadFilename, buf, err := getGithubDataFile(ctx, rel.Assets, suffix) if err != nil { return "", err } md5Ctx := md5.New() md5Ctx.Write(buf) binaryMd5 := md5Ctx.Sum(nil) if hex.EncodeToString(binaryMd5) != string(md5Val[0:32]) { glog.Errorf("md5:'%s' '%s'", hex.EncodeToString(binaryMd5), string(md5Val[0:32])) err = fmt.Errorf("binary md5sum doesn't match") return "", err } err = extractToFile(buf, downloadFilename, target) if err != nil { return "", err } else { glog.V(0).Infof("successfully updated weed to version %v\n", rel.Version) } return rel.Version, nil } // GitHubLatestRelease uses the GitHub API to get information about the specific // release of a repository. func GitHubLatestRelease(ctx context.Context, ver string, owner, repo string) (Release, error) { ctx, cancel := context.WithTimeout(ctx, githubAPITimeout) defer cancel() url := fmt.Sprintf("https://api.github.com/repos/%s/%s/releases", owner, repo) req, err := http.NewRequest(http.MethodGet, url, nil) if err != nil { return Release{}, err } // pin API version 3 req.Header.Set("Accept", "application/vnd.github.v3+json") res, err := ctxhttp.Do(ctx, http.DefaultClient, req) if err != nil { return Release{}, err } defer util.CloseResponse(res) if res.StatusCode != http.StatusOK { content := res.Header.Get("Content-Type") if strings.Contains(content, "application/json") { // try to decode error message var msg githubError jerr := json.NewDecoder(res.Body).Decode(&msg) if jerr == nil { return Release{}, fmt.Errorf("unexpected status %v (%v) returned, message:\n %v", res.StatusCode, res.Status, msg.Message) } } return Release{}, fmt.Errorf("unexpected status %v (%v) returned", res.StatusCode, res.Status) } buf, err := io.ReadAll(res.Body) if err != nil { return Release{}, err } var release Release var releaseList []Release err = json.Unmarshal(buf, &releaseList) if err != nil { return Release{}, err } if ver == "0" { release = releaseList[0] glog.V(0).Infof("latest version is %v\n", release.TagName) } else { for _, r := range releaseList { if r.TagName == ver { release = r break } } } if release.TagName == "" { return Release{}, fmt.Errorf("can not find the specific version") } release.Version = release.TagName return release, nil } func getGithubData(ctx context.Context, url string) ([]byte, error) { req, err := http.NewRequest(http.MethodGet, url, nil) if err != nil { return nil, err } // request binary data req.Header.Set("Accept", "application/octet-stream") res, err := ctxhttp.Do(ctx, http.DefaultClient, req) if err != nil { return nil, err } defer util.CloseResponse(res) if res.StatusCode != http.StatusOK { return nil, fmt.Errorf("unexpected status %v (%v) returned", res.StatusCode, res.Status) } buf, err := io.ReadAll(res.Body) if err != nil { return nil, err } return buf, nil } func getGithubDataFile(ctx context.Context, assets []Asset, suffix string) (filename string, data []byte, err error) { var url string for _, a := range assets { if strings.HasSuffix(a.Name, suffix) { url = a.URL filename = a.Name break } } if url == "" { return "", nil, fmt.Errorf("unable to find file with suffix %v", suffix) } glog.V(0).Infof("download %v\n", filename) data, err = getGithubData(ctx, url) if err != nil { return "", nil, err } return filename, data, nil } func extractToFile(buf []byte, filename, target string) error { var rd io.Reader = bytes.NewReader(buf) switch filepath.Ext(filename) { case ".gz": gr, err := gzip.NewReader(rd) if err != nil { return err } defer gr.Close() trd := tar.NewReader(gr) hdr, terr := trd.Next() if terr != nil { glog.Errorf("uncompress file(%s) failed:%s", hdr.Name, terr) return terr } rd = trd case ".zip": zrd, err := zip.NewReader(bytes.NewReader(buf), int64(len(buf))) if err != nil { return err } if len(zrd.File) != 1 { return fmt.Errorf("ZIP archive contains more than one file") } file, err := zrd.File[0].Open() if err != nil { return err } defer func() { _ = file.Close() }() rd = file } // Write everything to a temp file dir := filepath.Dir(target) new, err := os.CreateTemp(dir, "weed") if err != nil { return err } n, err := io.Copy(new, rd) if err != nil { _ = new.Close() _ = os.Remove(new.Name()) return err } if err = new.Sync(); err != nil { return err } if err = new.Close(); err != nil { return err } mode := os.FileMode(0755) // attempt to find the original mode if fi, err := os.Lstat(target); err == nil { mode = fi.Mode() } // Rename the temp file to the final location atomically. if err := os.Rename(new.Name(), target); err != nil { return err } glog.V(0).Infof("saved %d bytes in %v\n", n, target) return os.Chmod(target, mode) }