}

	ctx = newContext(r, w, action)

	token := r.Form.Get(stsToken)
	if token == "" {
		token = r.Form.Get(stsWebIdentityToken)
	}

	accessToken := r.Form.Get(stsWebIdentityAccessToken)

	// RoleARN parameter processing: If a role ARN is given in the request, we
	// use that and validate the authentication request. If not, we assume this
	// is an STS request for a claim based IDP (if one is present) and set

	if req.Form.Get(xhttp.AmzExpires) != query.Get(xhttp.AmzExpires) {
		return ErrSignatureDoesNotMatch
	}
	// Verify if signed headers query is same.
	if req.Form.Get(xhttp.AmzSignedHeaders) != query.Get(xhttp.AmzSignedHeaders) {
		return ErrSignatureDoesNotMatch
	}
	// Verify if credential query is same.
	if req.Form.Get(xhttp.AmzCredential) != query.Get(xhttp.AmzCredential) {
		return ErrSignatureDoesNotMatch
	}

	if objectAPI == nil {
		return
	}

	sizeStr := r.Form.Get(peerRESTSize)
	durationStr := r.Form.Get(peerRESTDuration)
	concurrentStr := r.Form.Get(peerRESTConcurrent)
	storageClass := strings.TrimSpace(r.Form.Get(peerRESTStorageClass))
	customBucket := strings.TrimSpace(r.Form.Get(peerRESTBucket))
	autotune := r.Form.Get("autotune") == "true"
	noClear := r.Form.Get("noclear") == "true"

		return
	}
	origvolume := r.Form.Get(storageRESTOrigVolume)
	volume := r.Form.Get(storageRESTVolume)
	filePath := r.Form.Get(storageRESTFilePath)
	versionID := r.Form.Get(storageRESTVersionID)
	readData, err := strconv.ParseBool(r.Form.Get(storageRESTReadData))
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	healing, err := strconv.ParseBool(r.Form.Get(storageRESTHealing))
	if err != nil {

	return signedHeaders, ErrNone
}

// signValues data type represents structured form of AWS Signature V4 header.
type signValues struct {
	Credential    credentialHeader
	SignedHeaders []string
	Signature     string
}

// preSignValues data type represents structured form of AWS Signature V4 query string.
type preSignValues struct {
	signValues
	Date    time.Time
	Expires time.Duration

		return
	}

	ctx, cancel := context.WithTimeout(ctx, globalAPIConfig.getClusterDeadline())
	defer cancel()

	opts := HealthOptions{
		Maintenance:    r.Form.Get("maintenance") == "true",
		DeploymentType: r.Form.Get("deployment-type"),
	}
	result := objLayer.Health(ctx, opts)
	w.Header().Set(xhttp.MinIOWriteQuorum, strconv.Itoa(result.WriteQuorum))

		createdAt, cerr := time.Parse(time.RFC3339Nano, strings.TrimSpace(r.Form.Get("createdAt")))
		if cerr != nil {
			createdAt = timeSentinel
		}

		opts := MakeBucketOptions{
			LockEnabled:       r.Form.Get("lockEnabled") == "true",
			VersioningEnabled: r.Form.Get("versioningEnabled") == "true",
			ForceCreate:       r.Form.Get("forceCreate") == "true",
			CreatedAt:         createdAt,
		}

	// Iterate over policy conditions and check them against received form fields
	for _, policy := range postPolicyForm.Conditions.Policies {
		// Form fields names are in canonical format, convert conditions names
		// to canonical for simplification purpose, so `$key` will become `Key`
		formCanonicalName := http.CanonicalHeaderKey(strings.TrimPrefix(policy.Key, "$"))
		// Operator for the current policy condition
		op := policy.Operator

}

// UnmarshalXML decodes delete marker boolean from the XML form.
func (b *Boolean) UnmarshalXML(d *xml.Decoder, startElement xml.StartElement) error {
	var exp bool
	err := d.DecodeElement(&exp, &startElement)
	if err != nil {
		return err
	}
	b.val = exp
	b.set = true
	return nil
}

// MarshalXML encodes expiration field into an XML form.

	if objectAPI == nil {
		return
	}

	// Validate API arguments.

	q := madmin.PolicyEntitiesQuery{
		Users:  r.Form["user"],
		Groups: r.Form["group"],
		Policy: r.Form["policy"],
	}

	// Query IAM

	res, err := globalIAMSys.QueryLDAPPolicyEntities(r.Context(), q)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)