frostfs-s3-gw/api/handler/tagging.go

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package handler
import (
"encoding/xml"
"io"
"net/http"
"sort"
"strings"
"unicode"
"github.com/nspcc-dev/neofs-s3-gw/api"
"github.com/nspcc-dev/neofs-s3-gw/api/data"
"github.com/nspcc-dev/neofs-s3-gw/api/errors"
"github.com/nspcc-dev/neofs-s3-gw/api/layer"
"go.uber.org/zap"
)
const (
allowedTagChars = "+-=._:/@"
maxTags = 10
keyTagMaxLength = 128
valueTagMaxLength = 256
)
func (h *handler) PutObjectTaggingHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
tagSet, err := readTagSet(r.Body)
if err != nil {
h.logAndSendError(w, "could not read tag set", reqInfo, err)
return
}
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
p := &layer.ObjectVersion{
BktInfo: bktInfo,
ObjectName: reqInfo.ObjectName,
VersionID: reqInfo.URL.Query().Get("versionId"),
}
if err = h.obj.PutObjectTagging(r.Context(), p, tagSet); err != nil {
h.logAndSendError(w, "could not put object tagging", reqInfo, err)
return
}
s := &SendNotificationParams{
Event: EventObjectTaggingPut,
ObjInfo: &data.ObjectInfo{
Name: reqInfo.ObjectName,
},
BktInfo: bktInfo,
ReqInfo: reqInfo,
}
if err = h.sendNotifications(r.Context(), s); err != nil {
h.log.Error("couldn't send notification: %w", zap.Error(err))
}
w.WriteHeader(http.StatusOK)
}
func (h *handler) GetObjectTaggingHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
settings, err := h.obj.GetBucketSettings(r.Context(), bktInfo)
if err != nil {
h.logAndSendError(w, "could not get bucket settings", reqInfo, err)
return
}
p := &layer.ObjectVersion{
BktInfo: bktInfo,
ObjectName: reqInfo.ObjectName,
VersionID: reqInfo.URL.Query().Get("versionId"),
}
versionID, tagSet, err := h.obj.GetObjectTagging(r.Context(), p)
if err != nil {
h.logAndSendError(w, "could not get object tagging", reqInfo, err)
return
}
if settings.VersioningEnabled {
w.Header().Set(api.AmzVersionID, versionID)
}
if err = api.EncodeToResponse(w, encodeTagging(tagSet)); err != nil {
h.logAndSendError(w, "something went wrong", reqInfo, err)
}
}
func (h *handler) DeleteObjectTaggingHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
p := &layer.ObjectVersion{
BktInfo: bktInfo,
ObjectName: reqInfo.ObjectName,
VersionID: reqInfo.URL.Query().Get("versionId"),
}
if err = h.obj.DeleteObjectTagging(r.Context(), p); err != nil {
h.logAndSendError(w, "could not delete object tagging", reqInfo, err)
return
}
s := &SendNotificationParams{
Event: EventObjectTaggingDelete,
ObjInfo: &data.ObjectInfo{
Name: reqInfo.ObjectName,
},
BktInfo: bktInfo,
ReqInfo: reqInfo,
}
if err = h.sendNotifications(r.Context(), s); err != nil {
h.log.Error("couldn't send notification: %w", zap.Error(err))
}
w.WriteHeader(http.StatusNoContent)
}
func (h *handler) PutBucketTaggingHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
tagSet, err := readTagSet(r.Body)
if err != nil {
h.logAndSendError(w, "could not read tag set", reqInfo, err)
return
}
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
if err = h.obj.PutBucketTagging(r.Context(), &bktInfo.CID, tagSet); err != nil {
h.logAndSendError(w, "could not put object tagging", reqInfo, err)
return
}
}
func (h *handler) GetBucketTaggingHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
tagSet, err := h.obj.GetBucketTagging(r.Context(), &bktInfo.CID)
if err != nil {
h.logAndSendError(w, "could not get object tagging", reqInfo, err)
return
}
if err = api.EncodeToResponse(w, encodeTagging(tagSet)); err != nil {
h.logAndSendError(w, "something went wrong", reqInfo, err)
return
}
}
func (h *handler) DeleteBucketTaggingHandler(w http.ResponseWriter, r *http.Request) {
reqInfo := api.GetReqInfo(r.Context())
bktInfo, err := h.getBucketAndCheckOwner(r, reqInfo.BucketName)
if err != nil {
h.logAndSendError(w, "could not get bucket info", reqInfo, err)
return
}
if err = h.obj.DeleteBucketTagging(r.Context(), &bktInfo.CID); err != nil {
h.logAndSendError(w, "could not delete bucket tagging", reqInfo, err)
return
}
w.WriteHeader(http.StatusNoContent)
}
func readTagSet(reader io.Reader) (map[string]string, error) {
tagging := new(Tagging)
if err := xml.NewDecoder(reader).Decode(tagging); err != nil {
return nil, errors.GetAPIError(errors.ErrMalformedXML)
}
if err := checkTagSet(tagging.TagSet); err != nil {
return nil, err
}
tagSet := make(map[string]string, len(tagging.TagSet))
for _, tag := range tagging.TagSet {
tagSet[tag.Key] = tag.Value
}
return tagSet, nil
}
func encodeTagging(tagSet map[string]string) *Tagging {
tagging := &Tagging{}
for k, v := range tagSet {
tagging.TagSet = append(tagging.TagSet, Tag{Key: k, Value: v})
}
sort.Slice(tagging.TagSet, func(i, j int) bool {
return tagging.TagSet[i].Key < tagging.TagSet[j].Key
})
return tagging
}
func checkTagSet(tagSet []Tag) error {
if len(tagSet) > maxTags {
return errors.GetAPIError(errors.ErrInvalidTagsSizeExceed)
}
for _, tag := range tagSet {
if err := checkTag(tag); err != nil {
return err
}
}
return nil
}
func checkTag(tag Tag) error {
if len(tag.Key) < 1 || len(tag.Key) > keyTagMaxLength {
return errors.GetAPIError(errors.ErrInvalidTagKey)
}
if len(tag.Value) > valueTagMaxLength {
return errors.GetAPIError(errors.ErrInvalidTagValue)
}
if strings.HasPrefix(tag.Key, "aws:") {
return errors.GetAPIError(errors.ErrInvalidTagKey)
}
if !isValidTag(tag.Key) {
return errors.GetAPIError(errors.ErrInvalidTagKey)
}
if !isValidTag(tag.Value) {
return errors.GetAPIError(errors.ErrInvalidTagValue)
}
return nil
}
func isValidTag(str string) bool {
for _, r := range str {
if !unicode.IsLetter(r) && !unicode.IsDigit(r) &&
!unicode.IsSpace(r) && !strings.ContainsRune(allowedTagChars, r) {
return false
}
}
return true
}