oci: update to image-spec v1 RC5

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

vendor/github.com/opencontainers/image-spec/schema/validator.go

@@ -1,119 +0,0 @@
-// Copyright 2016 The Linux Foundation
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package schema
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-
-	"github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
-	"github.com/xeipuuv/gojsonschema"
-)
-
-// Validator wraps a media type string identifier
-// and implements validation against a JSON schema.
-type Validator string
-
-type validateDescendantsFunc func(r io.Reader) error
-
-var mapValidateDescendants = map[Validator]validateDescendantsFunc{
-	MediaTypeManifest: validateManifestDescendants,
-}
-
-// ValidationError contains all the errors that happened during validation.
-type ValidationError struct {
-	Errs []error
-}
-
-func (e ValidationError) Error() string {
-	return fmt.Sprintf("%v", e.Errs)
-}
-
-// Validate validates the given reader against the schema of the wrapped media type.
-func (v Validator) Validate(src io.Reader) error {
-	buf, err := ioutil.ReadAll(src)
-	if err != nil {
-		return errors.Wrap(err, "unable to read the document file")
-	}
-
-	if f, ok := mapValidateDescendants[v]; ok {
-		if f == nil {
-			return fmt.Errorf("internal error: mapValidateDescendents[%q] is nil", v)
-		}
-		err = f(bytes.NewReader(buf))
-		if err != nil {
-			return err
-		}
-	}
-
-	sl := gojsonschema.NewReferenceLoaderFileSystem("file:///"+specs[v], fs)
-	ml := gojsonschema.NewStringLoader(string(buf))
-
-	result, err := gojsonschema.Validate(sl, ml)
-	if err != nil {
-		return errors.Wrapf(
-			WrapSyntaxError(bytes.NewReader(buf), err),
-			"schema %s: unable to validate", v)
-	}
-
-	if result.Valid() {
-		return nil
-	}
-
-	errs := make([]error, 0, len(result.Errors()))
-	for _, desc := range result.Errors() {
-		errs = append(errs, fmt.Errorf("%s", desc))
-	}
-
-	return ValidationError{
-		Errs: errs,
-	}
-}
-
-type unimplemented string
-
-func (v unimplemented) Validate(src io.Reader) error {
-	return fmt.Errorf("%s: unimplemented", v)
-}
-
-func validateManifestDescendants(r io.Reader) error {
-	header := v1.Manifest{}
-
-	buf, err := ioutil.ReadAll(r)
-	if err != nil {
-		return errors.Wrapf(err, "error reading the io stream")
-	}
-
-	err = json.Unmarshal(buf, &header)
-	if err != nil {
-		return errors.Wrap(err, "manifest format mismatch")
-	}
-
-	if header.Config.MediaType != string(v1.MediaTypeImageConfig) {
-		fmt.Printf("warning: config %s has an unknown media type: %s\n", header.Config.Digest, header.Config.MediaType)
-	}
-
-	for _, layer := range header.Layers {
-		if layer.MediaType != string(v1.MediaTypeImageLayer) &&
-			layer.MediaType != string(v1.MediaTypeImageLayerNonDistributable) {
-			fmt.Printf("warning: layer %s has an unknown media type: %s\n", layer.Digest, layer.MediaType)
-		}
-	}
-	return nil
-}