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Copy pathcopy-part-range.go
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72 lines (67 loc) · 2.48 KB
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Copy pathcopy-part-range.go
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72 lines (67 loc) · 2.48 KB
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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"
"net/http"
"net/url"
)
// Writes S3 compatible copy part range error.
func writeCopyPartErr(ctx context.Context, w http.ResponseWriter, err error, url *url.URL) {
switch err {
case errInvalidRange:
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRange), url)
return
case errInvalidRangeSource:
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource), url)
return
default:
apiErr := errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource)
apiErr.Description = err.Error()
writeErrorResponse(ctx, w, apiErr, url)
return
}
}
// Parses x-amz-copy-source-range for CopyObjectPart API. Its behavior
// is different from regular HTTP range header. It only supports the
// form `bytes=first-last` where first and last are zero-based byte
// offsets. See
// http://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadUploadPartCopy.html
// for full details. This function treats an empty rangeString as
// referring to the whole resource.
func parseCopyPartRangeSpec(rangeString string) (hrange *HTTPRangeSpec, err error) {
hrange, err = parseRequestRangeSpec(rangeString)
if err != nil {
return nil, err
}
if hrange.IsSuffixLength || hrange.Start < 0 || hrange.End < 0 {
return nil, errInvalidRange
}
return hrange, nil
}
// checkCopyPartRangeWithSize adds more check to the range string in case of
// copy object part. This API requires having specific start and end range values
// e.g. 'bytes=3-10'. Other use cases will be rejected.
func checkCopyPartRangeWithSize(rs *HTTPRangeSpec, resourceSize int64) (err error) {
if rs == nil {
return nil
}
if rs.IsSuffixLength || rs.Start >= resourceSize || rs.End >= resourceSize {
return errInvalidRangeSource
}
return nil
}