if canonicalQuery != "" {
		return encodedResource + "?" + canonicalQuery
	}
	return encodedResource
}

// Return string to sign under two different conditions.
// - if expires string is set then string to sign includes date instead of the Date header.
// - if expires string is empty then string to sign includes date header instead.

//     only after as a 2-phase call, allowing the older dataDir to
//     hang-around in-case we need some form of recovery.
type RenameDataResp struct {
	Sign       []byte
	OldDataDir string // contains '<uuid>', it is designed to be passed as value to Delete(bucket, pathJoin(object, dataDir))
}

// LocalDiskIDs - GetLocalIDs response.
type LocalDiskIDs struct {
	IDs []string
}

		{
			authT: authTypeStreamingSigned,
			pass:  true,
		},
		// Test 6 - supported s3 type with signature v2.
		{
			authT: authTypeSignedV2,
			pass:  true,
		},
		// Test 7 - supported s3 type with presign v2.
		{
			authT: authTypePresignedV2,
			pass:  true,
		},
		// Test 8 - JWT is not supported s3 type.
		{
			authT: authTypeJWT,
			pass:  false,
		},

// getChunkSignature - get chunk signature.
// Does not update anything in cr.
func (cr *s3ChunkedReader) getChunkSignature() string {
	hashedChunk := hex.EncodeToString(cr.chunkSHA256Writer.Sum(nil))

	// Calculate string to sign.
	alg := signV4ChunkedAlgorithm + "\n"
	stringToSign := alg +
		cr.seedDate.Format(iso8601Format) + "\n" +
		getScope(cr.seedDate, cr.region) + "\n" +
		cr.seedSignature + "\n" +
		emptySHA256 + "\n" +
		hashedChunk

	// Create a new post policy.
	policy := newPostPolicyBytesV2(bucketName, objectName, expirationTime)
	// Only need the encoding.
	encodedPolicy := base64.StdEncoding.EncodeToString(policy)

	// Presign with V4 signature based on the policy.
	signature := calculateSignatureV2(encodedPolicy, secretKey)

	formData := map[string]string{
		"AWSAccessKeyId":              accessKey,

		return 0, errors.New("Cannot compute decrypted size of an unencrypted object")
	}
	if !o.isMultipart() {
		size, err := sio.DecryptedSize(uint64(o.Size))
		if err != nil {
			err = errObjectTampered // assign correct error type
		}
		return int64(size), err
	}

	var size int64
	for _, part := range o.Parts {
		partSize, err := sio.DecryptedSize(uint64(part.Size))
		if err != nil {

	frameSize := p.positiveAtoi(op[0].String())
	if negative {
		frameSize = -frameSize
	}
	op = op[1:]
	argSize := int64(abi.ArgsSizeUnknown)
	if len(op) > 0 {
		// There is an argument size. It must be a minus sign followed by a non-negative integer literal.
		if len(op) != 2 || op[0].ScanToken != '-' || op[1].ScanToken != scanner.Int {
			p.errorf("TEXT %s: argument size must be of form -integer", name)
			return
		}

}

// GetMultipartInfo returns multipart metadata uploaded during newMultipartUpload, used
// by callers to verify object states
// - encrypted
// - compressed
// Does not contain currently uploaded parts by design.
func (er erasureObjects) GetMultipartInfo(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) (MultipartInfo, error) {
	if !opts.NoAuditLog {
		auditObjectErasureSet(ctx, object, &er)
	}

type setsDsyncLockers [][]dsync.NetLocker

// erasureSets implements ObjectLayer combining a static list of erasure coded
// object sets. NOTE: There is no dynamic scaling allowed or intended in
// current design.
type erasureSets struct {
	sets []*erasureObjects

	// Reference format.
	format *formatErasureV3

	// erasureDisks mutex to lock erasureDisks.
	erasureDisksMu sync.RWMutex

		strings.HasPrefix(r.Header.Get(xhttp.Authorization), signV2Algorithm))
}

// Verify if request has AWS PreSign Version '4'.
func isRequestPresignedSignatureV4(r *http.Request) bool {
	_, ok := r.Form[xhttp.AmzCredential]
	return ok
}

// Verify request has AWS PreSign Version '2'.
func isRequestPresignedSignatureV2(r *http.Request) bool {
	_, ok := r.Form[xhttp.AmzAccessKeyID]
	return ok
}