2015-02-15 08:48:15 +00:00
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/*
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2017-03-18 18:28:41 +00:00
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* Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
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2015-02-15 08:48:15 +00:00
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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2016-08-18 23:23:42 +00:00
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package cmd
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2015-02-11 11:23:15 +00:00
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import (
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"bytes"
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2018-01-22 22:54:55 +00:00
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"encoding/json"
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2015-02-11 11:23:15 +00:00
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"encoding/xml"
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2017-01-11 00:43:48 +00:00
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"fmt"
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2015-02-11 11:23:15 +00:00
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"net/http"
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"strconv"
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2017-01-11 00:43:48 +00:00
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"time"
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2018-09-21 02:22:09 +00:00
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"github.com/minio/minio/cmd/crypto"
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2015-02-11 11:23:15 +00:00
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)
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2017-01-11 00:43:48 +00:00
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// Returns a hexadecimal representation of time at the
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// time response is sent to the client.
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func mustGetRequestID(t time.Time) string {
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return fmt.Sprintf("%X", t.UnixNano())
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2015-07-14 21:29:56 +00:00
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}
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2015-02-24 00:46:48 +00:00
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// Write http common headers
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2016-01-08 08:40:06 +00:00
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func setCommonHeaders(w http.ResponseWriter) {
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2017-01-09 22:22:10 +00:00
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w.Header().Set("Server", globalServerUserAgent)
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2017-06-23 23:05:40 +00:00
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// Set `x-amz-bucket-region` only if region is set on the server
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// by default minio uses an empty region.
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2017-11-29 21:12:47 +00:00
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if region := globalServerConfig.GetRegion(); region != "" {
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2017-06-23 23:05:40 +00:00
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w.Header().Set("X-Amz-Bucket-Region", region)
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}
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2015-03-11 08:01:49 +00:00
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w.Header().Set("Accept-Ranges", "bytes")
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2018-09-25 19:39:46 +00:00
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// Remove sensitive information
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crypto.RemoveSensitiveHeaders(w.Header())
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2015-02-11 11:23:15 +00:00
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}
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2016-03-06 20:16:22 +00:00
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// Encodes the response headers into XML format.
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func encodeResponse(response interface{}) []byte {
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2015-02-11 11:23:15 +00:00
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var bytesBuffer bytes.Buffer
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2015-12-09 23:38:40 +00:00
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bytesBuffer.WriteString(xml.Header)
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2015-10-04 07:27:49 +00:00
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e := xml.NewEncoder(&bytesBuffer)
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2015-09-09 22:11:37 +00:00
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e.Encode(response)
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2015-02-11 11:23:15 +00:00
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return bytesBuffer.Bytes()
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}
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2018-01-22 22:54:55 +00:00
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// Encodes the response headers into JSON format.
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func encodeResponseJSON(response interface{}) []byte {
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var bytesBuffer bytes.Buffer
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e := json.NewEncoder(&bytesBuffer)
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e.Encode(response)
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return bytesBuffer.Bytes()
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}
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2015-02-24 00:46:48 +00:00
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// Write object header
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2018-09-21 02:22:09 +00:00
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func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, rs *HTTPRangeSpec) (err error) {
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2015-07-29 02:33:56 +00:00
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// set common headers
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2016-03-06 20:16:22 +00:00
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setCommonHeaders(w)
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2016-07-23 03:31:45 +00:00
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// Set last modified time.
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2016-04-08 17:37:38 +00:00
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lastModified := objInfo.ModTime.UTC().Format(http.TimeFormat)
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2016-03-06 20:16:22 +00:00
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w.Header().Set("Last-Modified", lastModified)
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2016-07-23 03:31:45 +00:00
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// Set Etag if available.
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2017-05-14 19:05:51 +00:00
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if objInfo.ETag != "" {
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w.Header().Set("ETag", "\""+objInfo.ETag+"\"")
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2016-01-29 03:57:23 +00:00
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}
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2016-07-23 03:31:45 +00:00
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2017-10-13 10:56:16 +00:00
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if objInfo.ContentType != "" {
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w.Header().Set("Content-Type", objInfo.ContentType)
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}
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if objInfo.ContentEncoding != "" {
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w.Header().Set("Content-Encoding", objInfo.ContentEncoding)
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}
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2016-07-23 03:31:45 +00:00
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// Set all other user defined metadata.
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2016-07-12 19:45:17 +00:00
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for k, v := range objInfo.UserDefined {
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2018-03-02 00:15:53 +00:00
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if hasPrefix(k, ReservedMetadataPrefix) {
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// Do not need to send any internal metadata
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// values to client.
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continue
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}
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2016-07-20 19:40:20 +00:00
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w.Header().Set(k, v)
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2016-07-12 19:45:17 +00:00
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}
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2016-03-06 20:16:22 +00:00
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2018-09-21 02:22:09 +00:00
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var totalObjectSize int64
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switch {
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case crypto.IsEncrypted(objInfo.UserDefined):
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totalObjectSize, err = objInfo.DecryptedSize()
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if err != nil {
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return err
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}
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2018-09-28 03:36:17 +00:00
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case objInfo.IsCompressed():
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totalObjectSize = objInfo.GetActualSize()
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if totalObjectSize < 0 {
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return errInvalidDecompressedSize
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}
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2018-09-21 02:22:09 +00:00
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default:
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totalObjectSize = objInfo.Size
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}
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2016-03-06 20:16:22 +00:00
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// for providing ranged content
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2018-09-21 02:22:09 +00:00
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start, rangeLen, err := rs.GetOffsetLength(totalObjectSize)
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if err != nil {
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return err
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2015-07-29 02:33:56 +00:00
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}
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2018-09-21 02:22:09 +00:00
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// Set content length.
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w.Header().Set("Content-Length", strconv.FormatInt(rangeLen, 10))
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if rs != nil {
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contentRange := fmt.Sprintf("bytes %d-%d/%d", start, start+rangeLen-1, totalObjectSize)
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w.Header().Set("Content-Range", contentRange)
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}
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return nil
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2015-03-11 08:01:49 +00:00
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}
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