/
object-api-input-checks.go
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/
object-api-input-checks.go
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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"encoding/base64"
"runtime"
"strings"
"github.com/minio/minio-go/v7/pkg/s3utils"
)
// Checks on CopyObject arguments, bucket and object.
func checkCopyObjArgs(ctx context.Context, bucket, object string) error {
return checkBucketAndObjectNames(ctx, bucket, object)
}
// Checks on GetObject arguments, bucket and object.
func checkGetObjArgs(ctx context.Context, bucket, object string) error {
return checkBucketAndObjectNames(ctx, bucket, object)
}
// Checks on DeleteObject arguments, bucket and object.
func checkDelObjArgs(ctx context.Context, bucket, object string) error {
return checkBucketAndObjectNames(ctx, bucket, object)
}
// Checks bucket and object name validity, returns nil if both are valid.
func checkBucketAndObjectNames(ctx context.Context, bucket, object string) error {
// Verify if bucket is valid.
if !isMinioMetaBucketName(bucket) && s3utils.CheckValidBucketNameStrict(bucket) != nil {
return BucketNameInvalid{Bucket: bucket}
}
// Verify if object is valid.
if len(object) == 0 {
return ObjectNameInvalid{Bucket: bucket, Object: object}
}
if !IsValidObjectPrefix(object) {
return ObjectNameInvalid{Bucket: bucket, Object: object}
}
if runtime.GOOS == globalWindowsOSName && strings.Contains(object, "\\") {
// Objects cannot be contain \ in Windows and is listed as `Characters to Avoid`.
return ObjectNameInvalid{Bucket: bucket, Object: object}
}
return nil
}
// Checks for all ListObjects arguments validity.
func checkListObjsArgs(ctx context.Context, bucket, prefix, marker string) error {
// Verify if bucket is valid.
if !isMinioMetaBucketName(bucket) && s3utils.CheckValidBucketNameStrict(bucket) != nil {
return BucketNameInvalid{Bucket: bucket}
}
// Validates object prefix validity after bucket exists.
if !IsValidObjectPrefix(prefix) {
return ObjectNameInvalid{
Bucket: bucket,
Object: prefix,
}
}
return nil
}
// Checks for all ListMultipartUploads arguments validity.
func checkListMultipartArgs(ctx context.Context, bucket, prefix, keyMarker, uploadIDMarker, delimiter string) error {
if err := checkListObjsArgs(ctx, bucket, prefix, keyMarker); err != nil {
return err
}
if uploadIDMarker != "" {
if HasSuffix(keyMarker, SlashSeparator) {
return InvalidUploadIDKeyCombination{
UploadIDMarker: uploadIDMarker,
KeyMarker: keyMarker,
}
}
_, err := base64.RawURLEncoding.DecodeString(uploadIDMarker)
if err != nil {
return MalformedUploadID{
UploadID: uploadIDMarker,
}
}
}
return nil
}
// Checks for NewMultipartUpload arguments validity, also validates if bucket exists.
func checkNewMultipartArgs(ctx context.Context, bucket, object string) error {
return checkObjectArgs(ctx, bucket, object)
}
func checkMultipartObjectArgs(ctx context.Context, bucket, object, uploadID string) error {
_, err := base64.RawURLEncoding.DecodeString(uploadID)
if err != nil {
return MalformedUploadID{
UploadID: uploadID,
}
}
return checkObjectArgs(ctx, bucket, object)
}
// Checks for PutObjectPart arguments validity, also validates if bucket exists.
func checkPutObjectPartArgs(ctx context.Context, bucket, object, uploadID string) error {
return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}
// Checks for ListParts arguments validity, also validates if bucket exists.
func checkListPartsArgs(ctx context.Context, bucket, object, uploadID string) error {
return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}
// Checks for CompleteMultipartUpload arguments validity, also validates if bucket exists.
func checkCompleteMultipartArgs(ctx context.Context, bucket, object, uploadID string) error {
return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}
// Checks for AbortMultipartUpload arguments validity, also validates if bucket exists.
func checkAbortMultipartArgs(ctx context.Context, bucket, object, uploadID string) error {
return checkMultipartObjectArgs(ctx, bucket, object, uploadID)
}
// Checks Object arguments validity.
func checkObjectArgs(ctx context.Context, bucket, object string) error {
// Verify if bucket is valid.
if !isMinioMetaBucketName(bucket) && s3utils.CheckValidBucketNameStrict(bucket) != nil {
return BucketNameInvalid{Bucket: bucket}
}
if err := checkObjectNameForLengthAndSlash(bucket, object); err != nil {
return err
}
// Validates object name validity after bucket exists.
if !IsValidObjectName(object) {
return ObjectNameInvalid{
Bucket: bucket,
Object: object,
}
}
return nil
}
// Checks for PutObject arguments validity.
func checkPutObjectArgs(ctx context.Context, bucket, object string) error {
// Verify if bucket is valid.
if !isMinioMetaBucketName(bucket) && s3utils.CheckValidBucketNameStrict(bucket) != nil {
return BucketNameInvalid{Bucket: bucket}
}
if err := checkObjectNameForLengthAndSlash(bucket, object); err != nil {
return err
}
if len(object) == 0 ||
!IsValidObjectPrefix(object) {
return ObjectNameInvalid{
Bucket: bucket,
Object: object,
}
}
return nil
}