forked from TrueCloudLab/frostfs-s3-gw
9cd4ef1ac4
Signed-off-by: Denis Kirillov <denis@nspcc.ru>
153 lines
3.9 KiB
Go
153 lines
3.9 KiB
Go
package layer
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import (
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"context"
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"encoding/hex"
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"fmt"
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"os"
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"strconv"
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"strings"
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"time"
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"github.com/nspcc-dev/neofs-s3-gw/api"
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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/layer/encryption"
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"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
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"github.com/nspcc-dev/neofs-sdk-go/object"
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)
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type (
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// ListObjectsInfo contains common fields of data for ListObjectsV1 and ListObjectsV2.
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ListObjectsInfo struct {
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Prefixes []string
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Objects []*data.ObjectInfo
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IsTruncated bool
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}
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// ListObjectsInfoV1 holds data which ListObjectsV1 returns.
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ListObjectsInfoV1 struct {
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ListObjectsInfo
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NextMarker string
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}
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// ListObjectsInfoV2 holds data which ListObjectsV2 returns.
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ListObjectsInfoV2 struct {
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ListObjectsInfo
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NextContinuationToken string
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}
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// ListObjectVersionsInfo stores info and list of objects versions.
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ListObjectVersionsInfo struct {
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CommonPrefixes []string
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IsTruncated bool
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KeyMarker string
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NextKeyMarker string
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NextVersionIDMarker string
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Version []*data.ExtendedObjectInfo
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DeleteMarker []*data.ExtendedObjectInfo
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VersionIDMarker string
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}
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)
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// PathSeparator is a path components separator string.
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const PathSeparator = string(os.PathSeparator)
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func userHeaders(attrs []object.Attribute) map[string]string {
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result := make(map[string]string, len(attrs))
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for _, attr := range attrs {
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result[attr.Key()] = attr.Value()
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}
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return result
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}
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func objectInfoFromMeta(bkt *data.BucketInfo, meta *object.Object) *data.ObjectInfo {
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var (
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mimeType string
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creation time.Time
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)
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headers := userHeaders(meta.Attributes())
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delete(headers, object.AttributeFilePath)
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if contentType, ok := headers[object.AttributeContentType]; ok {
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mimeType = contentType
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delete(headers, object.AttributeContentType)
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}
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if val, ok := headers[object.AttributeTimestamp]; !ok {
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// ignore empty value
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} else if dt, err := strconv.ParseInt(val, 10, 64); err == nil {
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creation = time.Unix(dt, 0)
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delete(headers, object.AttributeTimestamp)
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}
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objID, _ := meta.ID()
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payloadChecksum, _ := meta.PayloadChecksum()
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return &data.ObjectInfo{
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ID: objID,
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CID: bkt.CID,
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IsDir: false,
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Bucket: bkt.Name,
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Name: filepathFromObject(meta),
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Created: creation,
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ContentType: mimeType,
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Headers: headers,
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Owner: *meta.OwnerID(),
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Size: int64(meta.PayloadSize()),
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HashSum: hex.EncodeToString(payloadChecksum.Value()),
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}
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}
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func FormEncryptionInfo(headers map[string]string) encryption.ObjectEncryption {
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algorithm := headers[AttributeEncryptionAlgorithm]
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return encryption.ObjectEncryption{
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Enabled: len(algorithm) > 0,
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Algorithm: algorithm,
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HMACKey: headers[AttributeHMACKey],
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HMACSalt: headers[AttributeHMACSalt],
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}
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}
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func addEncryptionHeaders(meta map[string]string, enc encryption.Params) error {
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meta[AttributeEncryptionAlgorithm] = AESEncryptionAlgorithm
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hmacKey, hmacSalt, err := enc.HMAC()
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if err != nil {
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return fmt.Errorf("get hmac: %w", err)
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}
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meta[AttributeHMACKey] = hex.EncodeToString(hmacKey)
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meta[AttributeHMACSalt] = hex.EncodeToString(hmacSalt)
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return nil
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}
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func filepathFromObject(o *object.Object) string {
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for _, attr := range o.Attributes() {
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if attr.Key() == object.AttributeFilePath {
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return attr.Value()
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}
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}
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objID, _ := o.ID()
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return objID.EncodeToString()
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}
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// NameFromString splits name into a base file name and a directory path.
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func NameFromString(name string) (string, string) {
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ind := strings.LastIndex(name, PathSeparator)
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return name[ind+1:], name[:ind+1]
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}
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// GetBoxData extracts accessbox.Box from context.
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func GetBoxData(ctx context.Context) (*accessbox.Box, error) {
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var boxData *accessbox.Box
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data, ok := ctx.Value(api.BoxData).(*accessbox.Box)
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if !ok || data == nil {
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return nil, fmt.Errorf("couldn't get box data from context")
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}
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boxData = data
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if boxData.Gate == nil {
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boxData.Gate = &accessbox.GateData{}
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}
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return boxData, nil
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}
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