mirror of
https://github.com/minio/minio
synced 2024-11-05 17:34:01 +00:00
228 lines
7 KiB
Go
228 lines
7 KiB
Go
// 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 (
|
|
"bytes"
|
|
"encoding/json"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/minio/minio/cmd/crypto"
|
|
xhttp "github.com/minio/minio/cmd/http"
|
|
"github.com/minio/minio/pkg/bucket/lifecycle"
|
|
)
|
|
|
|
// Returns a hexadecimal representation of time at the
|
|
// time response is sent to the client.
|
|
func mustGetRequestID(t time.Time) string {
|
|
return fmt.Sprintf("%X", t.UnixNano())
|
|
}
|
|
|
|
// setEventStreamHeaders to allow proxies to avoid buffering proxy responses
|
|
func setEventStreamHeaders(w http.ResponseWriter) {
|
|
w.Header().Set(xhttp.ContentType, "text/event-stream")
|
|
w.Header().Set(xhttp.CacheControl, "no-cache") // nginx to turn off buffering
|
|
w.Header().Set("X-Accel-Buffering", "no") // nginx to turn off buffering
|
|
}
|
|
|
|
// Write http common headers
|
|
func setCommonHeaders(w http.ResponseWriter) {
|
|
// Set the "Server" http header.
|
|
w.Header().Set(xhttp.ServerInfo, "MinIO")
|
|
|
|
// Set `x-amz-bucket-region` only if region is set on the server
|
|
// by default minio uses an empty region.
|
|
if region := globalServerRegion; region != "" {
|
|
w.Header().Set(xhttp.AmzBucketRegion, region)
|
|
}
|
|
w.Header().Set(xhttp.AcceptRanges, "bytes")
|
|
|
|
// Remove sensitive information
|
|
crypto.RemoveSensitiveHeaders(w.Header())
|
|
}
|
|
|
|
// Encodes the response headers into XML format.
|
|
func encodeResponse(response interface{}) []byte {
|
|
var bytesBuffer bytes.Buffer
|
|
bytesBuffer.WriteString(xml.Header)
|
|
e := xml.NewEncoder(&bytesBuffer)
|
|
e.Encode(response)
|
|
return bytesBuffer.Bytes()
|
|
}
|
|
|
|
// Encodes the response headers into JSON format.
|
|
func encodeResponseJSON(response interface{}) []byte {
|
|
var bytesBuffer bytes.Buffer
|
|
e := json.NewEncoder(&bytesBuffer)
|
|
e.Encode(response)
|
|
return bytesBuffer.Bytes()
|
|
}
|
|
|
|
// Write parts count
|
|
func setPartsCountHeaders(w http.ResponseWriter, objInfo ObjectInfo) {
|
|
if strings.Contains(objInfo.ETag, "-") && len(objInfo.Parts) > 0 {
|
|
w.Header()[xhttp.AmzMpPartsCount] = []string{strconv.Itoa(len(objInfo.Parts))}
|
|
}
|
|
}
|
|
|
|
// Write object header
|
|
func setObjectHeaders(w http.ResponseWriter, objInfo ObjectInfo, rs *HTTPRangeSpec, opts ObjectOptions) (err error) {
|
|
// set common headers
|
|
setCommonHeaders(w)
|
|
|
|
// Set last modified time.
|
|
lastModified := objInfo.ModTime.UTC().Format(http.TimeFormat)
|
|
w.Header().Set(xhttp.LastModified, lastModified)
|
|
|
|
// Set Etag if available.
|
|
if objInfo.ETag != "" {
|
|
w.Header()[xhttp.ETag] = []string{"\"" + objInfo.ETag + "\""}
|
|
}
|
|
|
|
if objInfo.ContentType != "" {
|
|
w.Header().Set(xhttp.ContentType, objInfo.ContentType)
|
|
}
|
|
|
|
if objInfo.ContentEncoding != "" {
|
|
w.Header().Set(xhttp.ContentEncoding, objInfo.ContentEncoding)
|
|
}
|
|
|
|
if !objInfo.Expires.IsZero() {
|
|
w.Header().Set(xhttp.Expires, objInfo.Expires.UTC().Format(http.TimeFormat))
|
|
}
|
|
|
|
if globalCacheConfig.Enabled {
|
|
w.Header().Set(xhttp.XCache, objInfo.CacheStatus.String())
|
|
w.Header().Set(xhttp.XCacheLookup, objInfo.CacheLookupStatus.String())
|
|
}
|
|
|
|
// Set tag count if object has tags
|
|
if len(objInfo.UserTags) > 0 {
|
|
tags, _ := url.ParseQuery(objInfo.UserTags)
|
|
if len(tags) > 0 {
|
|
w.Header()[xhttp.AmzTagCount] = []string{strconv.Itoa(len(tags))}
|
|
}
|
|
}
|
|
|
|
// Set all other user defined metadata.
|
|
for k, v := range objInfo.UserDefined {
|
|
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
|
|
// Do not need to send any internal metadata
|
|
// values to client.
|
|
continue
|
|
}
|
|
|
|
// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
|
|
if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
|
|
continue
|
|
}
|
|
|
|
var isSet bool
|
|
for _, userMetadataPrefix := range userMetadataKeyPrefixes {
|
|
if !strings.HasPrefix(strings.ToLower(k), strings.ToLower(userMetadataPrefix)) {
|
|
continue
|
|
}
|
|
w.Header()[strings.ToLower(k)] = []string{v}
|
|
isSet = true
|
|
break
|
|
}
|
|
|
|
if !isSet {
|
|
w.Header().Set(k, v)
|
|
}
|
|
}
|
|
|
|
var start, rangeLen int64
|
|
totalObjectSize, err := objInfo.GetActualSize()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if rs == nil && opts.PartNumber > 0 {
|
|
rs = partNumberToRangeSpec(objInfo, opts.PartNumber)
|
|
}
|
|
|
|
// For providing ranged content
|
|
start, rangeLen, err = rs.GetOffsetLength(totalObjectSize)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Set content length.
|
|
w.Header().Set(xhttp.ContentLength, strconv.FormatInt(rangeLen, 10))
|
|
if rs != nil {
|
|
contentRange := fmt.Sprintf("bytes %d-%d/%d", start, start+rangeLen-1, totalObjectSize)
|
|
w.Header().Set(xhttp.ContentRange, contentRange)
|
|
}
|
|
|
|
// Set the relevant version ID as part of the response header.
|
|
if objInfo.VersionID != "" {
|
|
w.Header()[xhttp.AmzVersionID] = []string{objInfo.VersionID}
|
|
}
|
|
|
|
if objInfo.ReplicationStatus.String() != "" {
|
|
w.Header()[xhttp.AmzBucketReplicationStatus] = []string{objInfo.ReplicationStatus.String()}
|
|
}
|
|
|
|
if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil {
|
|
if opts.VersionID == "" {
|
|
if ruleID, expiryTime := lc.PredictExpiryTime(lifecycle.ObjectOpts{
|
|
Name: objInfo.Name,
|
|
UserTags: objInfo.UserTags,
|
|
VersionID: objInfo.VersionID,
|
|
ModTime: objInfo.ModTime,
|
|
IsLatest: objInfo.IsLatest,
|
|
DeleteMarker: objInfo.DeleteMarker,
|
|
SuccessorModTime: objInfo.SuccessorModTime,
|
|
}); !expiryTime.IsZero() {
|
|
w.Header()[xhttp.AmzExpiration] = []string{
|
|
fmt.Sprintf(`expiry-date="%s", rule-id="%s"`, expiryTime.Format(http.TimeFormat), ruleID),
|
|
}
|
|
}
|
|
}
|
|
if objInfo.IsRemote() {
|
|
// Check if object is being restored. For more information on x-amz-restore header see
|
|
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_HeadObject.html#API_HeadObject_ResponseSyntax
|
|
w.Header()[xhttp.AmzStorageClass] = []string{objInfo.TransitionTier}
|
|
}
|
|
ruleID, transitionTime := lc.PredictTransitionTime(lifecycle.ObjectOpts{
|
|
Name: objInfo.Name,
|
|
UserTags: objInfo.UserTags,
|
|
VersionID: objInfo.VersionID,
|
|
ModTime: objInfo.ModTime,
|
|
IsLatest: objInfo.IsLatest,
|
|
DeleteMarker: objInfo.DeleteMarker,
|
|
TransitionStatus: objInfo.TransitionStatus,
|
|
})
|
|
if !transitionTime.IsZero() {
|
|
// This header is a MinIO centric extension to show expected transition date in a similar spirit as x-amz-expiration
|
|
w.Header()[xhttp.MinIOTransition] = []string{
|
|
fmt.Sprintf(`transition-date="%s", rule-id="%s"`, transitionTime.Format(http.TimeFormat), ruleID),
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
}
|