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package manager
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import (
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"archive/zip"
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"context"
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"encoding/gob"
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"fmt"
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"io"
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"path"
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"path/filepath"
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"strings"
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"time"
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"unicode/utf8"
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"github.com/bodgit/sevenzip"
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"github.com/cloudreve/Cloudreve/v4/inventory/types"
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"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/fs"
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"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/fs/dbfs"
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"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/manager/entitysource"
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"github.com/cloudreve/Cloudreve/v4/pkg/util"
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"golang.org/x/text/encoding/charmap"
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"golang.org/x/text/encoding/simplifiedchinese"
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"golang.org/x/text/transform"
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"golang.org/x/tools/container/intsets"
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)
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type (
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ArchivedFile struct {
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Name string `json:"name"`
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Size int64 `json:"size"`
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UpdatedAt *time.Time `json:"updated_at"`
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IsDirectory bool `json:"is_directory"`
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}
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)
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const (
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ArchiveListCacheTTL = 3600 // 1 hour
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)
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func init() {
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gob.Register([]ArchivedFile{})
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}
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func normalizeArchiveName(rawString string) string {
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// 1. 有效 UTF-8
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if utf8.ValidString(rawString) {
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return rawString
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}
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// 2. 尝试 GB18030（GBK 的超集）
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if dec, _, err := transform.String(simplifiedchinese.GB18030.NewDecoder(), rawString); err == nil && utf8.ValidString(dec) {
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return dec
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}
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// 3. 尝试 GBK
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if dec, _, err := transform.String(simplifiedchinese.GBK.NewDecoder(), rawString); err == nil && utf8.ValidString(dec) {
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return dec
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}
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// 4. 尝试 CP437（ZIP 规范默认）
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if dec, _, err := transform.String(charmap.CodePage437.NewDecoder(), rawString); err == nil && utf8.ValidString(dec) {
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return dec
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}
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return rawString
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}
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func (m *manager) ListArchiveFiles(ctx context.Context, uri *fs.URI, entity string) ([]ArchivedFile, error) {
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file, err := m.fs.Get(ctx, uri, dbfs.WithFileEntities(), dbfs.WithRequiredCapabilities(dbfs.NavigatorCapabilityDownloadFile))
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if err != nil {
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return nil, fmt.Errorf("failed to get file: %w", err)
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}
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if file.Type() != types.FileTypeFile {
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return nil, fs.ErrNotSupportedAction.WithError(fmt.Errorf("path %s is not a file", uri))
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}
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// Validate file size
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if m.user.Edges.Group.Settings.DecompressSize > 0 && file.Size() > m.user.Edges.Group.Settings.DecompressSize {
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return nil, fs.ErrFileSizeTooBig.WithError(fmt.Errorf("file size %d exceeds the limit %d", file.Size(), m.user.Edges.Group.Settings.DecompressSize))
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}
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found, targetEntity := fs.FindDesiredEntity(file, entity, m.hasher, nil)
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if !found {
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return nil, fs.ErrEntityNotExist
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}
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cacheKey := getArchiveListCacheKey(targetEntity.ID())
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kv := m.kv
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res, found := kv.Get(cacheKey)
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if found {
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return res.([]ArchivedFile), nil
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}
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es, err := m.GetEntitySource(ctx, 0, fs.WithEntity(targetEntity))
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if err != nil {
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return nil, fmt.Errorf("failed to get entity source: %w", err)
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}
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es.Apply(entitysource.WithContext(ctx))
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defer es.Close()
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var readerFunc func(ctx context.Context, file io.ReaderAt, size int64) ([]ArchivedFile, error)
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switch file.Ext() {
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case "zip":
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readerFunc = getZipFileList
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case "7z":
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readerFunc = get7zFileList
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default:
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return nil, fs.ErrNotSupportedAction.WithError(fmt.Errorf("not supported archive format: %s", file.Ext()))
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}
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sr := io.NewSectionReader(es, 0, targetEntity.Size())
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fileList, err := readerFunc(ctx, sr, targetEntity.Size())
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if err != nil {
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return nil, fmt.Errorf("failed to read file list: %w", err)
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}
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for i := range fileList {
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fileList[i].Name = normalizeArchiveName(fileList[i].Name)
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}
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kv.Set(cacheKey, fileList, ArchiveListCacheTTL)
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return fileList, nil
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}
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func (m *manager) CreateArchive(ctx context.Context, uris []*fs.URI, writer io.Writer, opts ...fs.Option) (int, error) {
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o := newOption()
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for _, opt := range opts {
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opt.Apply(o)
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}
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failed := 0
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// List all top level files
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files := make([]fs.File, 0, len(uris))
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for _, uri := range uris {
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file, err := m.Get(ctx, uri, dbfs.WithFileEntities(), dbfs.WithRequiredCapabilities(dbfs.NavigatorCapabilityDownloadFile), dbfs.WithNotRoot())
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if err != nil {
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return 0, fmt.Errorf("failed to get file %s: %w", uri, err)
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}
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files = append(files, file)
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}
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zipWriter := zip.NewWriter(writer)
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defer zipWriter.Close()
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var compressed int64
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for _, file := range files {
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if file.Type() == types.FileTypeFile {
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if err := m.compressFileToArchive(ctx, "/", file, zipWriter, o.ArchiveCompression, o.DryRun); err != nil {
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failed++
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m.l.Warning("Failed to compress file %s: %s, skipping it...", file.Uri(false), err)
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}
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compressed += file.Size()
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if o.ProgressFunc != nil {
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o.ProgressFunc(compressed, file.Size(), 0)
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}
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if o.MaxArchiveSize > 0 && compressed > o.MaxArchiveSize {
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return 0, fs.ErrArchiveSrcSizeTooBig
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}
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} else {
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if err := m.Walk(ctx, file.Uri(false), intsets.MaxInt, func(f fs.File, level int) error {
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if f.Type() == types.FileTypeFolder || f.IsSymbolic() {
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return nil
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}
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if err := m.compressFileToArchive(ctx, strings.TrimPrefix(f.Uri(false).Dir(),
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file.Uri(false).Dir()), f, zipWriter, o.ArchiveCompression, o.DryRun); err != nil {
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failed++
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m.l.Warning("Failed to compress file %s: %s, skipping it...", f.Uri(false), err)
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}
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compressed += f.Size()
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if o.ProgressFunc != nil {
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o.ProgressFunc(compressed, f.Size(), 0)
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}
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if o.MaxArchiveSize > 0 && compressed > o.MaxArchiveSize {
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return fs.ErrArchiveSrcSizeTooBig
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}
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return nil
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}); err != nil {
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m.l.Warning("Failed to walk folder %s: %s, skipping it...", file.Uri(false), err)
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failed++
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}
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}
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}
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return failed, nil
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}
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func (m *manager) compressFileToArchive(ctx context.Context, parent string, file fs.File, zipWriter *zip.Writer,
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compression bool, dryrun fs.CreateArchiveDryRunFunc) error {
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es, err := m.GetEntitySource(ctx, file.PrimaryEntityID())
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if err != nil {
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return fmt.Errorf("failed to get entity source for file %s: %w", file.Uri(false), err)
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}
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zipName := filepath.FromSlash(path.Join(parent, file.DisplayName()))
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if dryrun != nil {
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dryrun(zipName, es.Entity())
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return nil
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}
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m.l.Debug("Compressing %s to archive...", file.Uri(false))
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header := &zip.FileHeader{
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Name: zipName,
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Modified: file.UpdatedAt(),
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UncompressedSize64: uint64(file.Size()),
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}
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if !compression {
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header.Method = zip.Store
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} else {
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header.Method = zip.Deflate
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}
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writer, err := zipWriter.CreateHeader(header)
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if err != nil {
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return fmt.Errorf("failed to create zip header for %s: %w", file.Uri(false), err)
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}
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es.Apply(entitysource.WithContext(ctx))
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_, err = io.Copy(writer, es)
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return err
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}
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func getZipFileList(ctx context.Context, file io.ReaderAt, size int64) ([]ArchivedFile, error) {
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zr, err := zip.NewReader(file, size)
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if err != nil {
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return nil, fmt.Errorf("failed to create zip reader: %w", err)
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}
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fileList := make([]ArchivedFile, 0, len(zr.File))
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for _, f := range zr.File {
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info := f.FileInfo()
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modTime := info.ModTime()
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fileList = append(fileList, ArchivedFile{
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Name: util.FormSlash(f.Name),
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Size: info.Size(),
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UpdatedAt: &modTime,
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IsDirectory: info.IsDir(),
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})
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}
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return fileList, nil
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}
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func get7zFileList(ctx context.Context, file io.ReaderAt, size int64) ([]ArchivedFile, error) {
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zr, err := sevenzip.NewReader(file, size)
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if err != nil {
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return nil, fmt.Errorf("failed to create 7z reader: %w", err)
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}
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fileList := make([]ArchivedFile, 0, len(zr.File))
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for _, f := range zr.File {
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info := f.FileInfo()
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modTime := info.ModTime()
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fileList = append(fileList, ArchivedFile{
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Name: util.FormSlash(f.Name),
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Size: info.Size(),
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UpdatedAt: &modTime,
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IsDirectory: info.IsDir(),
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})
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}
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return fileList, nil
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}
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func getArchiveListCacheKey(entity int) string {
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return fmt.Sprintf("archive_list_%d", entity)
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}
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