forked from TrueCloudLab/frostfs-s3-gw
139 lines
3.2 KiB
Go
139 lines
3.2 KiB
Go
package handler
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import (
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"encoding/xml"
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"net/http"
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"strings"
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"unicode"
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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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)
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const (
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allowedTagChars = "+-=._:/@"
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keyTagMaxLength = 128
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valueTagMaxLength = 256
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)
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func (h *handler) PutObjectTaggingHandler(w http.ResponseWriter, r *http.Request) {
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reqInfo := api.GetReqInfo(r.Context())
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tagging := new(Tagging)
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if err := xml.NewDecoder(r.Body).Decode(tagging); err != nil {
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h.logAndSendError(w, "could not decode body", reqInfo, errors.GetAPIError(errors.ErrMalformedXML))
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return
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}
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if err := checkTagSet(tagging.TagSet); err != nil {
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h.logAndSendError(w, "some tags are invalid", 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("versionId"),
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}
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objInfo, err := h.obj.GetObjectInfo(r.Context(), p)
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if err != nil {
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h.logAndSendError(w, "could not get object info", reqInfo, err)
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return
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}
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tagSet := make(map[string]string, len(tagging.TagSet))
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for _, tag := range tagging.TagSet {
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tagSet[tag.Key] = tag.Value
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}
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p2 := &layer.PutTaggingParams{
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ObjectInfo: objInfo,
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TagSet: tagSet,
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}
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if err = h.obj.PutObjectTagging(r.Context(), p2); err != nil {
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h.logAndSendError(w, "could not put object tagging", reqInfo, err)
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return
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}
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}
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func (h *handler) GetObjectTaggingHandler(w http.ResponseWriter, r *http.Request) {
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reqInfo := api.GetReqInfo(r.Context())
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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("versionId"),
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}
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objInfo, err := h.obj.GetObjectInfo(r.Context(), p)
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if err != nil {
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h.logAndSendError(w, "could not get object info", reqInfo, err)
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return
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}
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tagSet, err := h.obj.GetObjectTagging(r.Context(), objInfo)
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if err != nil {
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h.logAndSendError(w, "could not get object tagging", reqInfo, err)
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return
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}
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tagging := &Tagging{}
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for k, v := range tagSet {
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tagging.TagSet = append(tagging.TagSet, Tag{Key: k, Value: v})
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}
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w.Header().Set(api.AmzVersionID, objInfo.Version())
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if err = api.EncodeToResponse(w, tagging); err != nil {
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h.logAndSendError(w, "something went wrong", reqInfo, err)
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}
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}
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func checkTagSet(tagSet []Tag) error {
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if len(tagSet) > 10 {
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return errors.GetAPIError(errors.ErrInvalidTag)
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}
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for _, tag := range tagSet {
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if err := checkTag(tag); err != nil {
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return err
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}
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}
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return nil
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}
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func checkTag(tag Tag) error {
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if len(tag.Key) < 1 || len(tag.Key) > keyTagMaxLength {
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return errors.GetAPIError(errors.ErrInvalidTag)
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}
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if len(tag.Value) < 1 || len(tag.Value) > valueTagMaxLength {
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return errors.GetAPIError(errors.ErrInvalidTag)
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}
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if strings.HasPrefix(tag.Key, "aws:") {
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return errors.GetAPIError(errors.ErrInvalidTag)
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}
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if err := checkCharacters(tag.Key); err != nil {
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return err
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}
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if err := checkCharacters(tag.Value); err != nil {
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return err
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}
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return nil
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}
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func checkCharacters(str string) error {
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for _, r := range str {
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if !unicode.IsLetter(r) && !unicode.IsDigit(r) &&
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!unicode.IsSpace(r) && !strings.ContainsRune(allowedTagChars, r) {
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return errors.GetAPIError(errors.ErrInvalidTag)
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}
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}
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return nil
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}
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