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validate.go
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validate.go
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// Copyright 2020-2022 Buf Technologies, Inc.
//
// 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 bufimage
import (
"errors"
"fmt"
imagev1 "github.com/bufbuild/buf/private/gen/proto/go/buf/alpha/image/v1"
)
// we validate the actual fields of the FileDescriptorProtos as part of newImageFile
func validateProtoImage(protoImage *imagev1.Image) error {
if protoImage == nil {
return errors.New("nil Image")
}
if len(protoImage.File) == 0 {
return errors.New("image contains no files")
}
for _, protoImageFile := range protoImage.File {
if err := validateProtoImageFile(protoImageFile); err != nil {
return err
}
}
return nil
}
func validateProtoImageFile(protoImageFile *imagev1.ImageFile) error {
if protoImageFileExtension := protoImageFile.GetBufExtension(); protoImageFileExtension != nil {
lenDependencies := len(protoImageFile.GetDependency())
for _, index := range protoImageFileExtension.GetUnusedDependency() {
if int(index) >= lenDependencies || int(index) < 0 {
return fmt.Errorf("unused dependency index %d is out of range", index)
}
}
if protoModuleInfo := protoImageFileExtension.GetModuleInfo(); protoModuleInfo != nil {
return validateProtoModuleInfo(protoModuleInfo)
}
}
return nil
}
func validateProtoModuleInfo(protoModuleInfo *imagev1.ModuleInfo) error {
if protoModuleName := protoModuleInfo.GetName(); protoModuleName != nil {
return validateProtoModuleName(protoModuleInfo.Name)
}
return nil
}
func validateProtoModuleName(protoModuleName *imagev1.ModuleName) error {
if protoModuleName.GetRemote() == "" {
return errors.New("empty ModuleName.Remote")
}
if protoModuleName.GetOwner() == "" {
return errors.New("empty ModuleName.Owner")
}
if protoModuleName.GetRepository() == "" {
return errors.New("empty ModuleName.Repository")
}
return nil
}