forked from TrueCloudLab/frostfs-s3-gw
90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
package handler
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import (
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"bytes"
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"net/http"
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"github.com/nspcc-dev/neofs-s3-gw/api"
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"github.com/nspcc-dev/neofs-s3-gw/api/errors"
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"github.com/nspcc-dev/neofs-s3-gw/api/layer"
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"go.uber.org/zap"
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)
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const sizeToDetectType = 512
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func getRangeToDetectContentType(maxSize int64) *layer.RangeParams {
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end := uint64(maxSize)
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if sizeToDetectType < end {
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end = sizeToDetectType
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}
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return &layer.RangeParams{
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Start: 0,
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End: end - 1,
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}
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}
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func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
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var (
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err error
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info *layer.ObjectInfo
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reqInfo = api.GetReqInfo(r.Context())
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)
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if err = h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
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h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
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return
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}
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p := &layer.HeadObjectParams{
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Bucket: reqInfo.BucketName,
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Object: reqInfo.ObjectName,
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VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
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}
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if info, err = h.obj.GetObjectInfo(r.Context(), p); err != nil {
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h.logAndSendError(w, "could not fetch object info", reqInfo, err)
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return
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}
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tagSet, err := h.obj.GetObjectTagging(r.Context(), info)
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if err != nil && !errors.IsS3Error(err, errors.ErrNoSuchKey) {
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h.logAndSendError(w, "could not get object tag set", reqInfo, err)
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return
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}
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if len(info.ContentType) == 0 {
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buffer := bytes.NewBuffer(make([]byte, 0, sizeToDetectType))
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getParams := &layer.GetObjectParams{
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ObjectInfo: info,
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Writer: buffer,
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Range: getRangeToDetectContentType(info.Size),
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VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
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}
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if err = h.obj.GetObject(r.Context(), getParams); err != nil {
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h.logAndSendError(w, "could not get object", reqInfo, err, zap.Stringer("oid", info.ID()))
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return
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}
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info.ContentType = http.DetectContentType(buffer.Bytes())
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}
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writeHeaders(w.Header(), info, len(tagSet))
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w.WriteHeader(http.StatusOK)
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}
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func (h *handler) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {
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reqInfo := api.GetReqInfo(r.Context())
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bktInfo, err := h.obj.GetBucketInfo(r.Context(), reqInfo.BucketName)
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if err != nil {
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h.logAndSendError(w, "could not get bucket info", reqInfo, err)
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return
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}
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if err = checkOwner(bktInfo, r.Header.Get(api.AmzExpectedBucketOwner)); err != nil {
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h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
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return
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}
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w.Header().Set(api.ContainerID, bktInfo.CID.String())
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api.WriteResponse(w, http.StatusOK, nil, api.MimeNone)
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}
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