package images import ( "context" "fmt" "io" "net/http" "net/url" "strconv" "github.com/containers/image/v5/types" "github.com/containers/podman/v2/pkg/api/handlers" "github.com/containers/podman/v2/pkg/auth" "github.com/containers/podman/v2/pkg/bindings" "github.com/containers/podman/v2/pkg/domain/entities" "github.com/pkg/errors" ) // Exists a lightweight way to determine if an image exists in local storage. It returns a // boolean response. func Exists(ctx context.Context, nameOrID string) (bool, error) { conn, err := bindings.GetClient(ctx) if err != nil { return false, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/exists", nil, nil, nameOrID) if err != nil { return false, err } return response.IsSuccess(), nil } // List returns a list of images in local storage. The all boolean and filters parameters are optional // ways to alter the image query. func List(ctx context.Context, all *bool, filters map[string][]string) ([]*entities.ImageSummary, error) { var imageSummary []*entities.ImageSummary conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} if all != nil { params.Set("all", strconv.FormatBool(*all)) } if filters != nil { strFilters, err := bindings.FiltersToString(filters) if err != nil { return nil, err } params.Set("filters", strFilters) } response, err := conn.DoRequest(nil, http.MethodGet, "/images/json", params, nil) if err != nil { return imageSummary, err } return imageSummary, response.Process(&imageSummary) } // Get performs an image inspect. To have the on-disk size of the image calculated, you can // use the optional size parameter. func GetImage(ctx context.Context, nameOrID string, size *bool) (*entities.ImageInspectReport, error) { conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} if size != nil { params.Set("size", strconv.FormatBool(*size)) } inspectedData := entities.ImageInspectReport{} response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/json", params, nil, nameOrID) if err != nil { return &inspectedData, err } return &inspectedData, response.Process(&inspectedData) } // Tree retrieves a "tree" based representation of the given image func Tree(ctx context.Context, nameOrID string, whatRequires *bool) (*entities.ImageTreeReport, error) { var report entities.ImageTreeReport conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} if whatRequires != nil { params.Set("size", strconv.FormatBool(*whatRequires)) } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/tree", params, nil, nameOrID) if err != nil { return nil, err } return &report, response.Process(&report) } // History returns the parent layers of an image. func History(ctx context.Context, nameOrID string) ([]*handlers.HistoryResponse, error) { var history []*handlers.HistoryResponse conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/history", nil, nil, nameOrID) if err != nil { return history, err } return history, response.Process(&history) } func Load(ctx context.Context, r io.Reader, name *string) (*entities.ImageLoadReport, error) { var report entities.ImageLoadReport conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} if name != nil { params.Set("reference", *name) } response, err := conn.DoRequest(r, http.MethodPost, "/images/load", params, nil) if err != nil { return nil, err } return &report, response.Process(&report) } func MultiExport(ctx context.Context, namesOrIds []string, w io.Writer, format *string, compress *bool) error { conn, err := bindings.GetClient(ctx) if err != nil { return err } params := url.Values{} if format != nil { params.Set("format", *format) } if compress != nil { params.Set("compress", strconv.FormatBool(*compress)) } for _, ref := range namesOrIds { params.Add("references", ref) } response, err := conn.DoRequest(nil, http.MethodGet, "/images/export", params, nil) if err != nil { return err } if response.StatusCode/100 == 2 || response.StatusCode/100 == 3 { _, err = io.Copy(w, response.Body) return err } return response.Process(nil) } // Export saves an image from local storage as a tarball or image archive. The optional format // parameter is used to change the format of the output. func Export(ctx context.Context, nameOrID string, w io.Writer, format *string, compress *bool) error { conn, err := bindings.GetClient(ctx) if err != nil { return err } params := url.Values{} if format != nil { params.Set("format", *format) } if compress != nil { params.Set("compress", strconv.FormatBool(*compress)) } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/get", params, nil, nameOrID) if err != nil { return err } if response.StatusCode/100 == 2 || response.StatusCode/100 == 3 { _, err = io.Copy(w, response.Body) return err } return response.Process(nil) } // Prune removes unused images from local storage. The optional filters can be used to further // define which images should be pruned. func Prune(ctx context.Context, all *bool, filters map[string][]string) ([]string, error) { var ( deleted []string ) conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} if all != nil { params.Set("all", strconv.FormatBool(*all)) } if filters != nil { stringFilter, err := bindings.FiltersToString(filters) if err != nil { return nil, err } params.Set("filters", stringFilter) } response, err := conn.DoRequest(nil, http.MethodPost, "/images/prune", params, nil) if err != nil { return deleted, err } return deleted, response.Process(&deleted) } // Tag adds an additional name to locally-stored image. Both the tag and repo parameters are required. func Tag(ctx context.Context, nameOrID, tag, repo string) error { conn, err := bindings.GetClient(ctx) if err != nil { return err } params := url.Values{} params.Set("tag", tag) params.Set("repo", repo) response, err := conn.DoRequest(nil, http.MethodPost, "/images/%s/tag", params, nil, nameOrID) if err != nil { return err } return response.Process(nil) } // Untag removes a name from locally-stored image. Both the tag and repo parameters are required. func Untag(ctx context.Context, nameOrID, tag, repo string) error { conn, err := bindings.GetClient(ctx) if err != nil { return err } params := url.Values{} params.Set("tag", tag) params.Set("repo", repo) response, err := conn.DoRequest(nil, http.MethodPost, "/images/%s/untag", params, nil, nameOrID) if err != nil { return err } return response.Process(nil) } // Imports adds the given image to the local image store. This can be done by file and the given reader // or via the url parameter. Additional metadata can be associated with the image by using the changes and // message parameters. The image can also be tagged given a reference. One of url OR r must be provided. func Import(ctx context.Context, changes []string, message, reference, u *string, r io.Reader) (*entities.ImageImportReport, error) { var report entities.ImageImportReport if r != nil && u != nil { return nil, errors.New("url and r parameters cannot be used together") } conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} for _, change := range changes { params.Add("changes", change) } if message != nil { params.Set("message", *message) } if reference != nil { params.Set("reference", *reference) } if u != nil { params.Set("url", *u) } response, err := conn.DoRequest(r, http.MethodPost, "/images/import", params, nil) if err != nil { return nil, err } return &report, response.Process(&report) } // Push is the binding for libpod's v2 endpoints for push images. Note that // `source` must be a referring to an image in the remote's container storage. // The destination must be a reference to a registry (i.e., of docker transport // or be normalized to one). Other transports are rejected as they do not make // sense in a remote context. func Push(ctx context.Context, source string, destination string, options entities.ImagePushOptions) error { conn, err := bindings.GetClient(ctx) if err != nil { return err } // TODO: have a global system context we can pass around (1st argument) header, err := auth.Header(nil, auth.XRegistryAuthHeader, options.Authfile, options.Username, options.Password) if err != nil { return err } params := url.Values{} params.Set("destination", destination) if options.SkipTLSVerify != types.OptionalBoolUndefined { // Note: we have to verify if skipped is false. verifyTLS := bool(options.SkipTLSVerify == types.OptionalBoolFalse) params.Set("tlsVerify", strconv.FormatBool(verifyTLS)) } path := fmt.Sprintf("/images/%s/push", source) response, err := conn.DoRequest(nil, http.MethodPost, path, params, header) if err != nil { return err } return response.Process(err) } // Search is the binding for libpod's v2 endpoints for Search images. func Search(ctx context.Context, term string, opts entities.ImageSearchOptions) ([]entities.ImageSearchReport, error) { conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params := url.Values{} params.Set("term", term) params.Set("limit", strconv.Itoa(opts.Limit)) params.Set("noTrunc", strconv.FormatBool(opts.NoTrunc)) params.Set("listTags", strconv.FormatBool(opts.ListTags)) for _, f := range opts.Filters { params.Set("filters", f) } if opts.SkipTLSVerify != types.OptionalBoolUndefined { // Note: we have to verify if skipped is false. verifyTLS := bool(opts.SkipTLSVerify == types.OptionalBoolFalse) params.Set("tlsVerify", strconv.FormatBool(verifyTLS)) } // TODO: have a global system context we can pass around (1st argument) header, err := auth.Header(nil, auth.XRegistryAuthHeader, opts.Authfile, "", "") if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/search", params, header) if err != nil { return nil, err } results := []entities.ImageSearchReport{} if err := response.Process(&results); err != nil { return nil, err } return results, nil }