146 lines
3.7 KiB
Go
146 lines
3.7 KiB
Go
package container // import "github.com/docker/docker/api/server/router/container"
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import (
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"compress/flate"
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"compress/gzip"
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"context"
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"encoding/base64"
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"encoding/json"
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"errors"
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"io"
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"net/http"
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"github.com/docker/docker/api/server/httputils"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/versions"
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"github.com/docker/docker/errdefs"
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gddohttputil "github.com/golang/gddo/httputil"
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)
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type pathError struct{}
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func (pathError) Error() string {
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return "Path cannot be empty"
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}
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func (pathError) InvalidParameter() {}
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// postContainersCopy is deprecated in favor of getContainersArchive.
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func (s *containerRouter) postContainersCopy(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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// Deprecated since 1.8, Errors out since 1.12
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version := httputils.VersionFromContext(ctx)
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if versions.GreaterThanOrEqualTo(version, "1.24") {
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w.WriteHeader(http.StatusNotFound)
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return nil
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}
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if err := httputils.CheckForJSON(r); err != nil {
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return err
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}
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cfg := types.CopyConfig{}
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if err := json.NewDecoder(r.Body).Decode(&cfg); err != nil {
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if err == io.EOF {
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return errdefs.InvalidParameter(errors.New("got EOF while reading request body"))
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}
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return errdefs.InvalidParameter(err)
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}
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if cfg.Resource == "" {
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return pathError{}
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}
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data, err := s.backend.ContainerCopy(vars["name"], cfg.Resource)
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if err != nil {
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return err
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}
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defer data.Close()
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w.Header().Set("Content-Type", "application/x-tar")
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_, err = io.Copy(w, data)
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return err
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}
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// // Encode the stat to JSON, base64 encode, and place in a header.
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func setContainerPathStatHeader(stat *types.ContainerPathStat, header http.Header) error {
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statJSON, err := json.Marshal(stat)
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if err != nil {
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return err
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}
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header.Set(
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"X-Docker-Container-Path-Stat",
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base64.StdEncoding.EncodeToString(statJSON),
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)
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return nil
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}
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func (s *containerRouter) headContainersArchive(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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v, err := httputils.ArchiveFormValues(r, vars)
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if err != nil {
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return err
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}
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stat, err := s.backend.ContainerStatPath(v.Name, v.Path)
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if err != nil {
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return err
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}
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return setContainerPathStatHeader(stat, w.Header())
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}
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func writeCompressedResponse(w http.ResponseWriter, r *http.Request, body io.Reader) error {
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var cw io.Writer
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switch gddohttputil.NegotiateContentEncoding(r, []string{"gzip", "deflate"}) {
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case "gzip":
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gw := gzip.NewWriter(w)
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defer gw.Close()
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cw = gw
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w.Header().Set("Content-Encoding", "gzip")
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case "deflate":
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fw, err := flate.NewWriter(w, flate.DefaultCompression)
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if err != nil {
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return err
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}
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defer fw.Close()
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cw = fw
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w.Header().Set("Content-Encoding", "deflate")
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default:
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cw = w
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}
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_, err := io.Copy(cw, body)
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return err
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}
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func (s *containerRouter) getContainersArchive(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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v, err := httputils.ArchiveFormValues(r, vars)
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if err != nil {
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return err
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}
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tarArchive, stat, err := s.backend.ContainerArchivePath(v.Name, v.Path)
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if err != nil {
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return err
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}
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defer tarArchive.Close()
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if err := setContainerPathStatHeader(stat, w.Header()); err != nil {
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return err
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}
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w.Header().Set("Content-Type", "application/x-tar")
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return writeCompressedResponse(w, r, tarArchive)
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}
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func (s *containerRouter) putContainersArchive(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
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v, err := httputils.ArchiveFormValues(r, vars)
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if err != nil {
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return err
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}
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noOverwriteDirNonDir := httputils.BoolValue(r, "noOverwriteDirNonDir")
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copyUIDGID := httputils.BoolValue(r, "copyUIDGID")
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return s.backend.ContainerExtractToDir(v.Name, v.Path, copyUIDGID, noOverwriteDirNonDir, r.Body)
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}
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