forked from TrueCloudLab/frostfs-s3-gw
116 lines
2.9 KiB
Go
116 lines
2.9 KiB
Go
package layer
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import (
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"bytes"
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"context"
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"encoding/xml"
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errorsStd "errors"
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"fmt"
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"io"
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"github.com/nspcc-dev/neofs-s3-gw/api/data"
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"github.com/nspcc-dev/neofs-s3-gw/api/errors"
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"go.uber.org/zap"
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)
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const wildcard = "*"
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var supportedMethods = map[string]struct{}{"GET": {}, "HEAD": {}, "POST": {}, "PUT": {}, "DELETE": {}}
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func (n *layer) PutBucketCORS(ctx context.Context, p *PutCORSParams) error {
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var (
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buf bytes.Buffer
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tee = io.TeeReader(p.Reader, &buf)
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cors = &data.CORSConfiguration{}
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)
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if err := xml.NewDecoder(tee).Decode(cors); err != nil {
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return fmt.Errorf("xml decode cors: %w", err)
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}
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if cors.CORSRules == nil {
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return errors.GetAPIError(errors.ErrMalformedXML)
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}
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if err := checkCORS(cors); err != nil {
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return err
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}
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prm := PrmObjectCreate{
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Container: p.BktInfo.CID,
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Creator: p.BktInfo.Owner,
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Payload: p.Reader,
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Filename: p.BktInfo.CORSObjectName(),
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}
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objID, _, err := n.objectPutAndHash(ctx, prm, p.BktInfo)
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if err != nil {
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return fmt.Errorf("put system object: %w", err)
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}
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objIDToDelete, err := n.treeService.PutBucketCORS(ctx, p.BktInfo.CID, objID)
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objIDToDeleteNotFound := errorsStd.Is(err, ErrNoNodeToRemove)
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if err != nil && !objIDToDeleteNotFound {
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return err
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}
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if !objIDToDeleteNotFound {
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if err = n.objectDelete(ctx, p.BktInfo, objIDToDelete); err != nil {
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n.log.Error("couldn't delete cors object", zap.Error(err),
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zap.String("cnrID", p.BktInfo.CID.EncodeToString()),
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zap.String("bucket name", p.BktInfo.Name),
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zap.String("objID", objIDToDelete.EncodeToString()))
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}
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}
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if err := n.systemCache.PutCORS(systemObjectKey(p.BktInfo, prm.Filename), cors); err != nil {
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n.log.Error("couldn't cache system object", zap.Error(err))
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}
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return nil
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}
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func (n *layer) GetBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) (*data.CORSConfiguration, error) {
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cors, err := n.getCORS(ctx, bktInfo, bktInfo.CORSObjectName())
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if err != nil {
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if errorsStd.Is(err, ErrNodeNotFound) {
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return nil, errors.GetAPIError(errors.ErrNoSuchCORSConfiguration)
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}
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return nil, err
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}
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return cors, nil
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}
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func (n *layer) DeleteBucketCORS(ctx context.Context, bktInfo *data.BucketInfo) error {
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objID, err := n.treeService.DeleteBucketCORS(ctx, bktInfo.CID)
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objIDNotFound := errorsStd.Is(err, ErrNoNodeToRemove)
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if err != nil && !objIDNotFound {
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return err
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}
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if !objIDNotFound {
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if err = n.objectDelete(ctx, bktInfo, objID); err != nil {
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return err
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}
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}
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n.systemCache.Delete(systemObjectKey(bktInfo, bktInfo.CORSObjectName()))
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return nil
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}
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func checkCORS(cors *data.CORSConfiguration) error {
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for _, r := range cors.CORSRules {
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for _, m := range r.AllowedMethods {
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if _, ok := supportedMethods[m]; !ok {
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return errors.GetAPIErrorWithError(errors.ErrCORSUnsupportedMethod, fmt.Errorf("unsupported method is %s", m))
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}
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}
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for _, h := range r.ExposeHeaders {
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if h == wildcard {
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return errors.GetAPIError(errors.ErrCORSWildcardExposeHeaders)
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}
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}
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}
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return nil
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}
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