"encoding/xml"

	"github.com/minio/minio/internal/auth"
)

// AssumedRoleUser - The identifiers for the temporary security credentials that
// the operation returns. Please also see https://docs.aws.amazon.com/goto/WebAPI/sts-2011-06-15/AssumedRoleUser
type AssumedRoleUser struct {
	// The ARN of the temporary security credentials that are returned from the
	// AssumeRole action. For more information about ARNs and how to use them in

	return nil
}

// stsAPIHandlers implements and provides http handlers for AWS STS API.
type stsAPIHandlers struct{}

// registerSTSRouter - registers AWS STS compatible APIs.
func registerSTSRouter(router *mux.Router) {
	// Initialize STS.
	sts := &stsAPIHandlers{}

	// STS Router
	stsRouter := router.NewRoute().PathPrefix(SlashSeparator).Subrouter()

### Response Elements

XML response for this API is similar to [AWS STS AssumeRoleWithWebIdentity](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html#API_AssumeRoleWithWebIdentity_ResponseElements)

### Errors

XML error response for this API is similar to [AWS STS AssumeRoleWithWebIdentity](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html#API_AssumeRoleWithWebIdentity_Errors)

				writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
				return
			}
			for _, sts := range stsKeys {
				accessKeys.STSKeys = append(accessKeys.STSKeys, madmin.ServiceAccountInfo{
					AccessKey:  sts.AccessKey,
					Expiration: &sts.Expiration,
				})
			}
			// if only STS keys, skip if user has no STS keys
			if !listServiceAccounts && len(stsKeys) == 0 {
				continue
			}
		}

### Response Elements

XML response for this API is similar to [AWS STS AssumeRoleWithWebIdentity](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html#API_AssumeRoleWithWebIdentity_ResponseElements)

### Errors

XML error response for this API is similar to [AWS STS AssumeRoleWithWebIdentity](https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRoleWithWebIdentity.html#API_AssumeRoleWithWebIdentity_Errors)

	svcAccListKey           = "service-accounts/"
	groupsListKey           = "groups/"
	policiesListKey         = "policies/"
	stsListKey              = "sts/"
	policyDBPrefix          = "policydb/"
	policyDBUsersListKey    = "policydb/users/"
	policyDBSTSUsersListKey = "policydb/sts-users/"
	policyDBGroupsListKey   = "policydb/groups/"
)

func findSecondIndex(s string, substr string) int {
	first := strings.Index(s, substr)

		// STS accounts ops
		adminRouter.Methods(http.MethodGet).Path(adminVersion+"/temporary-account-info").HandlerFunc(adminMiddleware(adminAPI.TemporaryAccountInfo)).Queries("accessKey", "{accessKey:.*}")

		// Access key (service account/STS) operations

			guessIsRPCReq(r) || guessIsLoginSTSReq(r) || isAdminReq(r) || isKMSReq(r) {
			h.ServeHTTP(w, r)
			return
		}

		bucket, object := request2BucketObjectName(r)

		// Requests in federated setups for STS type calls which are
		// performed at '/' resource should be routed by the muxer,
		// the assumption is simply such that requests without a bucket
		// in a federated setup cannot be proxied, so serve them at

const (
	signV4Algorithm = "AWS4-HMAC-SHA256"
	iso8601Format   = "20060102T150405Z"
	yyyymmdd        = "20060102"
)

type serviceType string

const (
	serviceS3  serviceType = "s3"
	serviceSTS serviceType = "sts"
)

// getCanonicalHeaders generate a list of request headers with their values
func getCanonicalHeaders(signedHeaders http.Header) string {
	var headers []string
	vals := make(http.Header, len(signedHeaders))