storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/cmd/copy-part-range.go (about) 1 /* 2 * MinIO Cloud Storage, (C) 2017 MinIO, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package cmd 18 19 import ( 20 "context" 21 "net/http" 22 "net/url" 23 ) 24 25 // Writes S3 compatible copy part range error. 26 func writeCopyPartErr(ctx context.Context, w http.ResponseWriter, err error, url *url.URL, browser bool) { 27 switch err { 28 case errInvalidRange: 29 WriteErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRange), url, browser) 30 return 31 case errInvalidRangeSource: 32 WriteErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource), url, browser) 33 return 34 default: 35 apiErr := errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource) 36 apiErr.Description = err.Error() 37 WriteErrorResponse(ctx, w, apiErr, url, browser) 38 return 39 } 40 } 41 42 // Parses x-amz-copy-source-range for CopyObjectPart API. Its behavior 43 // is different from regular HTTP range header. It only supports the 44 // form `bytes=first-last` where first and last are zero-based byte 45 // offsets. See 46 // http://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadUploadPartCopy.html 47 // for full details. This function treats an empty rangeString as 48 // referring to the whole resource. 49 func parseCopyPartRangeSpec(rangeString string) (hrange *HTTPRangeSpec, err error) { 50 hrange, err = parseRequestRangeSpec(rangeString) 51 if err != nil { 52 return nil, err 53 } 54 if hrange.IsSuffixLength || hrange.Start < 0 || hrange.End < 0 { 55 return nil, errInvalidRange 56 } 57 return hrange, nil 58 } 59 60 // checkCopyPartRangeWithSize adds more check to the range string in case of 61 // copy object part. This API requires having specific start and end range values 62 // e.g. 'bytes=3-10'. Other use cases will be rejected. 63 func checkCopyPartRangeWithSize(rs *HTTPRangeSpec, resourceSize int64) (err error) { 64 if rs == nil { 65 return nil 66 } 67 if rs.IsSuffixLength || rs.Start >= resourceSize || rs.End >= resourceSize { 68 return errInvalidRangeSource 69 } 70 return nil 71 }