package libpod import ( "context" "fmt" "io" "io/ioutil" "net/http" "os" "strconv" "strings" "github.com/containers/buildah" "github.com/containers/image/v5/manifest" "github.com/containers/image/v5/types" "github.com/containers/podman/v3/libpod" "github.com/containers/podman/v3/libpod/define" "github.com/containers/podman/v3/libpod/image" "github.com/containers/podman/v3/pkg/api/handlers" "github.com/containers/podman/v3/pkg/api/handlers/utils" "github.com/containers/podman/v3/pkg/auth" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/containers/podman/v3/pkg/domain/infra/abi" "github.com/containers/podman/v3/pkg/errorhandling" "github.com/containers/podman/v3/pkg/util" utils2 "github.com/containers/podman/v3/utils" "github.com/gorilla/schema" "github.com/pkg/errors" ) // Commit // author string // "container" // repo string // tag string // message // pause bool // changes []string // create func ImageExists(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) name := utils.GetName(r) ir := abi.ImageEngine{Libpod: runtime} report, err := ir.Exists(r.Context(), name) if err != nil { utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Wrapf(err, "failed to find image %s", name)) return } if !report.Value { utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Errorf("failed to find image %s", name)) return } utils.WriteResponse(w, http.StatusNoContent, "") } func ImageTree(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) name := utils.GetName(r) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { WhatRequires bool `schema:"whatrequires"` }{ WhatRequires: false, } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } ir := abi.ImageEngine{Libpod: runtime} options := entities.ImageTreeOptions{WhatRequires: query.WhatRequires} report, err := ir.Tree(r.Context(), name, options) if err != nil { if errors.Cause(err) == define.ErrNoSuchImage { utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Wrapf(err, "failed to find image %s", name)) return } utils.Error(w, "Server error", http.StatusInternalServerError, errors.Wrapf(err, "failed to generate image tree for %s", name)) return } utils.WriteResponse(w, http.StatusOK, report) } func GetImage(w http.ResponseWriter, r *http.Request) { name := utils.GetName(r) newImage, err := utils.GetImage(r, name) if err != nil { utils.Error(w, "Something went wrong.", http.StatusNotFound, errors.Wrapf(err, "failed to find image %s", name)) return } inspect, err := newImage.Inspect(r.Context()) if err != nil { utils.Error(w, "Server error", http.StatusInternalServerError, errors.Wrapf(err, "failed in inspect image %s", inspect.ID)) return } utils.WriteResponse(w, http.StatusOK, inspect) } func GetImages(w http.ResponseWriter, r *http.Request) { images, err := utils.GetImages(w, r) if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed get images")) return } var summaries = make([]*entities.ImageSummary, len(images)) for j, img := range images { is, err := handlers.ImageToImageSummary(img) if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "Failed transform image summaries")) return } // libpod has additional fields that we need to populate. is.ReadOnly = img.IsReadOnly() summaries[j] = is } utils.WriteResponse(w, http.StatusOK, summaries) } func PruneImages(w http.ResponseWriter, r *http.Request) { var ( err error ) runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { All bool `schema:"all"` }{ // override any golang type defaults } filterMap, err := util.PrepareFilters(r) if dErr := decoder.Decode(&query, r.URL.Query()); dErr != nil || err != nil { utils.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } var libpodFilters = []string{} if _, found := r.URL.Query()["filters"]; found { dangling := (*filterMap)["all"] if len(dangling) > 0 { query.All, err = strconv.ParseBool((*filterMap)["all"][0]) if err != nil { utils.InternalServerError(w, err) return } } // dangling is special and not implemented in the libpod side of things delete(*filterMap, "dangling") for k, v := range *filterMap { libpodFilters = append(libpodFilters, fmt.Sprintf("%s=%s", k, v[0])) } } imagePruneReports, err := runtime.ImageRuntime().PruneImages(r.Context(), query.All, libpodFilters) if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, err) return } utils.WriteResponse(w, http.StatusOK, imagePruneReports) } func ExportImage(w http.ResponseWriter, r *http.Request) { var ( output string ) runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { Compress bool `schema:"compress"` Format string `schema:"format"` }{ Format: define.OCIArchive, } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } name := utils.GetName(r) newImage, err := runtime.ImageRuntime().NewFromLocal(name) if err != nil { utils.ImageNotFound(w, name, err) return } switch query.Format { case define.OCIArchive, define.V2s2Archive: tmpfile, err := ioutil.TempFile("", "api.tar") if err != nil { utils.Error(w, "unable to create tmpfile", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile")) return } output = tmpfile.Name() if err := tmpfile.Close(); err != nil { utils.Error(w, "unable to close tmpfile", http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile")) return } case define.OCIManifestDir, define.V2s2ManifestDir: tmpdir, err := ioutil.TempDir("", "save") if err != nil { utils.Error(w, "unable to create tmpdir", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempdir")) return } output = tmpdir default: utils.Error(w, "unknown format", http.StatusInternalServerError, errors.Errorf("unknown format %q", query.Format)) return } if err := newImage.Save(r.Context(), name, query.Format, output, []string{}, false, query.Compress, true); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err) return } defer os.RemoveAll(output) // if dir format, we need to tar it if query.Format == "oci-dir" || query.Format == "docker-dir" { rdr, err := utils2.Tar(output) if err != nil { utils.InternalServerError(w, err) return } defer rdr.Close() utils.WriteResponse(w, http.StatusOK, rdr) return } rdr, err := os.Open(output) if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to read the exported tarfile")) return } defer rdr.Close() utils.WriteResponse(w, http.StatusOK, rdr) } func ExportImages(w http.ResponseWriter, r *http.Request) { var ( output string ) runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { Compress bool `schema:"compress"` Format string `schema:"format"` References []string `schema:"references"` }{ Format: define.OCIArchive, } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } // References are mandatory! if len(query.References) == 0 { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.New("No references")) return } // Format is mandatory! Currently, we only support multi-image docker // archives. if len(query.References) > 1 && query.Format != define.V2s2Archive { utils.Error(w, "unsupported format", http.StatusInternalServerError, errors.Errorf("multi-image archives must use format of %s", define.V2s2Archive)) return } // if format is dir, server will save to an archive // the client will unArchive after receive the archive file // so must convert is at here switch query.Format { case define.OCIManifestDir: query.Format = define.OCIArchive case define.V2s2ManifestDir: query.Format = define.V2s2Archive } switch query.Format { case define.V2s2Archive, define.OCIArchive: tmpfile, err := ioutil.TempFile("", "api.tar") if err != nil { utils.Error(w, "unable to create tmpfile", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile")) return } output = tmpfile.Name() if err := tmpfile.Close(); err != nil { utils.Error(w, "unable to close tmpfile", http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile")) return } case define.OCIManifestDir, define.V2s2ManifestDir: tmpdir, err := ioutil.TempDir("", "save") if err != nil { utils.Error(w, "unable to create tmpdir", http.StatusInternalServerError, errors.Wrap(err, "unable to create tmpdir")) return } output = tmpdir default: utils.Error(w, "unsupported format", http.StatusInternalServerError, errors.Errorf("unsupported format %q", query.Format)) return } defer os.RemoveAll(output) // Use the ABI image engine to share as much code as possible. opts := entities.ImageSaveOptions{ Compress: query.Compress, Format: query.Format, MultiImageArchive: len(query.References) > 1, Output: output, RemoveSignatures: true, } imageEngine := abi.ImageEngine{Libpod: runtime} if err := imageEngine.Save(r.Context(), query.References[0], query.References[1:], opts); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err) return } rdr, err := os.Open(output) if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "failed to read the exported tarfile")) return } defer rdr.Close() utils.WriteResponse(w, http.StatusOK, rdr) } func ImagesLoad(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) tmpfile, err := ioutil.TempFile("", "libpod-images-load.tar") if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile")) return } defer os.Remove(tmpfile.Name()) _, err = io.Copy(tmpfile, r.Body) tmpfile.Close() if err != nil && err != io.EOF { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to write archive to temporary file")) return } loadedImage, err := runtime.LoadImage(context.Background(), tmpfile.Name(), os.Stderr, "") if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to load image")) return } utils.WriteResponse(w, http.StatusOK, entities.ImageLoadReport{Names: strings.Split(loadedImage, ",")}) } func ImagesImport(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { Changes []string `schema:"changes"` Message string `schema:"message"` Reference string `schema:"reference"` URL string `schema:"URL"` }{ // Add defaults here once needed. } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } // Check if we need to load the image from a URL or from the request's body. source := query.URL if len(query.URL) == 0 { tmpfile, err := ioutil.TempFile("", "libpod-images-import.tar") if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile")) return } defer os.Remove(tmpfile.Name()) defer tmpfile.Close() if _, err := io.Copy(tmpfile, r.Body); err != nil && err != io.EOF { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to write archive to temporary file")) return } tmpfile.Close() source = tmpfile.Name() } importedImage, err := runtime.Import(context.Background(), source, query.Reference, "", query.Changes, query.Message, true) if err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "unable to import image")) return } utils.WriteResponse(w, http.StatusOK, entities.ImageImportReport{Id: importedImage}) } // PushImage is the handler for the compat http endpoint for pushing images. func PushImage(w http.ResponseWriter, r *http.Request) { decoder := r.Context().Value("decoder").(*schema.Decoder) runtime := r.Context().Value("runtime").(*libpod.Runtime) query := struct { Destination string `schema:"destination"` TLSVerify bool `schema:"tlsVerify"` Format string `schema:"format"` All bool `schema:"all"` }{ // This is where you can override the golang default value for one of fields } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } source := strings.TrimSuffix(utils.GetName(r), "/push") // GetName returns the entire path if _, err := utils.ParseStorageReference(source); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err) return } destination := query.Destination if destination == "" { destination = source } if _, err := utils.ParseDockerReference(destination); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, err) return } authconf, authfile, key, err := auth.GetCredentials(r) if err != nil { utils.Error(w, "failed to retrieve repository credentials", http.StatusBadRequest, errors.Wrapf(err, "failed to parse %q header for %s", key, r.URL.String())) return } defer auth.RemoveAuthfile(authfile) var username, password string if authconf != nil { username = authconf.Username password = authconf.Password } options := entities.ImagePushOptions{ Authfile: authfile, Username: username, Password: password, Format: query.Format, All: query.All, Quiet: true, } if _, found := r.URL.Query()["tlsVerify"]; found { options.SkipTLSVerify = types.NewOptionalBool(!query.TLSVerify) } imageEngine := abi.ImageEngine{Libpod: runtime} if err := imageEngine.Push(context.Background(), source, destination, options); err != nil { utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "error pushing image %q", destination)) return } utils.WriteResponse(w, http.StatusOK, "") } func CommitContainer(w http.ResponseWriter, r *http.Request) { var ( destImage string mimeType string ) decoder := r.Context().Value("decoder").(*schema.Decoder) runtime := r.Context().Value("runtime").(*libpod.Runtime) query := struct { Author string `schema:"author"` Changes []string `schema:"changes"` Comment string `schema:"comment"` Container string `schema:"container"` Format string `schema:"format"` Pause bool `schema:"pause"` Repo string `schema:"repo"` Tag string `schema:"tag"` }{ Format: "oci", } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } rtc, err := runtime.GetConfig() if err != nil { utils.Error(w, "failed to get runtime config", http.StatusInternalServerError, errors.Wrap(err, "failed to get runtime config")) return } sc := image.GetSystemContext(rtc.Engine.SignaturePolicyPath, "", false) tag := "latest" options := libpod.ContainerCommitOptions{ Pause: true, } switch query.Format { case "oci": mimeType = buildah.OCIv1ImageManifest if len(query.Comment) > 0 { utils.InternalServerError(w, errors.New("messages are only compatible with the docker image format (-f docker)")) return } case "docker": mimeType = manifest.DockerV2Schema2MediaType default: utils.InternalServerError(w, errors.Errorf("unrecognized image format %q", query.Format)) return } options.CommitOptions = buildah.CommitOptions{ SignaturePolicyPath: rtc.Engine.SignaturePolicyPath, ReportWriter: os.Stderr, SystemContext: sc, PreferredManifestType: mimeType, } if len(query.Tag) > 0 { tag = query.Tag } options.Message = query.Comment options.Author = query.Author options.Pause = query.Pause options.Changes = query.Changes ctr, err := runtime.LookupContainer(query.Container) if err != nil { utils.Error(w, "failed to lookup container", http.StatusNotFound, err) return } if len(query.Repo) > 0 { destImage = fmt.Sprintf("%s:%s", query.Repo, tag) } commitImage, err := ctr.Commit(r.Context(), destImage, options) if err != nil && !strings.Contains(err.Error(), "is not running") { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrapf(err, "CommitFailure")) return } utils.WriteResponse(w, http.StatusOK, handlers.IDResponse{ID: commitImage.ID()}) // nolint } func UntagImage(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) tags := []string{} // Note: if empty, all tags will be removed from the image. repo := r.Form.Get("repo") tag := r.Form.Get("tag") // Do the parameter dance. switch { // If tag is set, repo must be as well. case len(repo) == 0 && len(tag) > 0: utils.Error(w, "repo tag is required", http.StatusBadRequest, errors.New("repo parameter is required to tag an image")) return case len(repo) == 0: break // If repo is specified, we need to add that to the tags. default: if len(tag) == 0 { // Normalize tag to "latest" if empty. tag = "latest" } tags = append(tags, fmt.Sprintf("%s:%s", repo, tag)) } // Now use the ABI implementation to prevent us from having duplicate // code. opts := entities.ImageUntagOptions{} imageEngine := abi.ImageEngine{Libpod: runtime} name := utils.GetName(r) if err := imageEngine.Untag(r.Context(), name, tags, opts); err != nil { if errors.Cause(err) == define.ErrNoSuchImage { utils.ImageNotFound(w, name, errors.Wrapf(err, "failed to find image %s", name)) } else { utils.Error(w, "failed to untag", http.StatusInternalServerError, err) } return } utils.WriteResponse(w, http.StatusCreated, "") } // ImagesBatchRemove is the endpoint for batch image removal. func ImagesBatchRemove(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { All bool `schema:"all"` Force bool `schema:"force"` Images []string `schema:"images"` }{} if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } opts := entities.ImageRemoveOptions{All: query.All, Force: query.Force} imageEngine := abi.ImageEngine{Libpod: runtime} rmReport, rmErrors := imageEngine.Remove(r.Context(), query.Images, opts) strErrs := errorhandling.ErrorsToStrings(rmErrors) report := handlers.LibpodImagesRemoveReport{ImageRemoveReport: *rmReport, Errors: strErrs} utils.WriteResponse(w, http.StatusOK, report) } // ImagesRemove is the endpoint for removing one image. func ImagesRemove(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { Force bool `schema:"force"` }{ Force: false, } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "failed to parse parameters for %s", r.URL.String())) return } opts := entities.ImageRemoveOptions{Force: query.Force} imageEngine := abi.ImageEngine{Libpod: runtime} rmReport, rmErrors := imageEngine.Remove(r.Context(), []string{utils.GetName(r)}, opts) // In contrast to batch-removal, where we're only setting the exit // code, we need to have another closer look at the errors here and set // the appropriate http status code. switch rmReport.ExitCode { case 0: report := handlers.LibpodImagesRemoveReport{ImageRemoveReport: *rmReport, Errors: []string{}} utils.WriteResponse(w, http.StatusOK, report) case 1: // 404 - no such image utils.Error(w, "error removing image", http.StatusNotFound, errorhandling.JoinErrors(rmErrors)) case 2: // 409 - conflict error (in use by containers) utils.Error(w, "error removing image", http.StatusConflict, errorhandling.JoinErrors(rmErrors)) default: // 500 - internal error utils.Error(w, "failed to remove image", http.StatusInternalServerError, errorhandling.JoinErrors(rmErrors)) } }