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minio/cmd/object-api-input-checks.go

185 lines
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/*
* Minio Cloud Storage, (C) 2016 Minio, 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 cmd
import (
"context"
"github.com/minio/minio/pkg/errors"
"github.com/skyrings/skyring-common/tools/uuid"
)
// Checks on GetObject arguments, bucket and object.
func checkGetObjArgs(bucket, object string) error {
return checkBucketAndObjectNames(bucket, object)
}
// Checks on DeleteObject arguments, bucket and object.
func checkDelObjArgs(bucket, object string) error {
return checkBucketAndObjectNames(bucket, object)
}
// Checks bucket and object name validity, returns nil if both are valid.
func checkBucketAndObjectNames(bucket, object string) error {
// Verify if bucket is valid.
if !IsValidBucketName(bucket) {
return errors.Trace(BucketNameInvalid{Bucket: bucket})
}
// Verify if object is valid.
if len(object) == 0 {
return errors.Trace(ObjectNameInvalid{Bucket: bucket, Object: object})
}
if !IsValidObjectPrefix(object) {
return errors.Trace(ObjectNameInvalid{Bucket: bucket, Object: object})
}
return nil
}
// Checks for all ListObjects arguments validity.
func checkListObjsArgs(bucket, prefix, marker, delimiter string, obj ObjectLayer) error {
// Verify if bucket exists before validating object name.
// This is done on purpose since the order of errors is
// important here bucket does not exist error should
// happen before we return an error for invalid object name.
// FIXME: should be moved to handler layer.
if err := checkBucketExist(bucket, obj); err != nil {
return errors.Trace(err)
}
// Validates object prefix validity after bucket exists.
if !IsValidObjectPrefix(prefix) {
return errors.Trace(ObjectNameInvalid{
Bucket: bucket,
Object: prefix,
})
}
// Verify if delimiter is anything other than '/', which we do not support.
if delimiter != "" && delimiter != slashSeparator {
return errors.Trace(UnsupportedDelimiter{
Delimiter: delimiter,
})
}
// Verify if marker has prefix.
if marker != "" && !hasPrefix(marker, prefix) {
return errors.Trace(InvalidMarkerPrefixCombination{
Marker: marker,
Prefix: prefix,
})
}
return nil
}
// Checks for all ListMultipartUploads arguments validity.
func checkListMultipartArgs(bucket, prefix, keyMarker, uploadIDMarker, delimiter string, obj ObjectLayer) error {
if err := checkListObjsArgs(bucket, prefix, keyMarker, delimiter, obj); err != nil {
return err
}
if uploadIDMarker != "" {
if hasSuffix(keyMarker, slashSeparator) {
return errors.Trace(InvalidUploadIDKeyCombination{
UploadIDMarker: uploadIDMarker,
KeyMarker: keyMarker,
})
}
id, err := uuid.Parse(uploadIDMarker)
if err != nil {
return errors.Trace(err)
}
if id.IsZero() {
return errors.Trace(MalformedUploadID{
UploadID: uploadIDMarker,
})
}
}
return nil
}
// Checks for NewMultipartUpload arguments validity, also validates if bucket exists.
func checkNewMultipartArgs(bucket, object string, obj ObjectLayer) error {
return checkObjectArgs(bucket, object, obj)
}
// Checks for PutObjectPart arguments validity, also validates if bucket exists.
func checkPutObjectPartArgs(bucket, object string, obj ObjectLayer) error {
return checkObjectArgs(bucket, object, obj)
}
// Checks for ListParts arguments validity, also validates if bucket exists.
func checkListPartsArgs(bucket, object string, obj ObjectLayer) error {
return checkObjectArgs(bucket, object, obj)
}
// Checks for CompleteMultipartUpload arguments validity, also validates if bucket exists.
func checkCompleteMultipartArgs(bucket, object string, obj ObjectLayer) error {
return checkObjectArgs(bucket, object, obj)
}
// Checks for AbortMultipartUpload arguments validity, also validates if bucket exists.
func checkAbortMultipartArgs(bucket, object string, obj ObjectLayer) error {
return checkObjectArgs(bucket, object, obj)
}
// Checks Object arguments validity, also validates if bucket exists.
func checkObjectArgs(bucket, object string, obj ObjectLayer) error {
// Verify if bucket exists before validating object name.
// This is done on purpose since the order of errors is
// important here bucket does not exist error should
// happen before we return an error for invalid object name.
// FIXME: should be moved to handler layer.
if err := checkBucketExist(bucket, obj); err != nil {
return errors.Trace(err)
}
// Validates object name validity after bucket exists.
if !IsValidObjectName(object) {
return errors.Trace(ObjectNameInvalid{
Bucket: bucket,
Object: object,
})
}
return nil
}
// Checks for PutObject arguments validity, also validates if bucket exists.
func checkPutObjectArgs(bucket, object string, obj ObjectLayer, size int64) error {
// Verify if bucket exists before validating object name.
// This is done on purpose since the order of errors is
// important here bucket does not exist error should
// happen before we return an error for invalid object name.
// FIXME: should be moved to handler layer.
if err := checkBucketExist(bucket, obj); err != nil {
return errors.Trace(err)
}
if len(object) == 0 ||
hasPrefix(object, slashSeparator) ||
(hasSuffix(object, slashSeparator) && size != 0) ||
!IsValidObjectPrefix(object) {
return errors.Trace(ObjectNameInvalid{
Bucket: bucket,
Object: object,
})
}
return nil
}
// Checks whether bucket exists and returns appropriate error if not.
func checkBucketExist(bucket string, obj ObjectLayer) error {
_, err := obj.GetBucketInfo(context.Background(), bucket)
if err != nil {
return errors.Cause(err)
}
return nil
}