refactor(configuration): utilize time duration decode hook (#2938)

This enhances the existing time.Duration parser to allow multiple units, and implements a decode hook which can be used by koanf to decode string/integers into time.Durations as applicable.

docs/configuration/index.md

@@ -100,27 +100,46 @@ $ authelia validate-config --config configuration.yml
 
 # Duration Notation Format
 
-We have implemented a string based notation for configuration options that take a duration. This section describes its
-usage. You can use this implementation in: session for expiration, inactivity, and remember_me_duration; and regulation
-for ban_time, and find_time. This notation also supports just providing the number of seconds instead.
+We have implemented a string/integer based notation for configuration options that take a duration of time. This section 
+describes the implementation of this. You can use this implementation in various areas of configuration such as:
 
-The notation is comprised of a number which must be positive and not have leading zeros, followed by a letter
-denoting the unit of time measurement. The table below describes the units of time and the associated letter.
+- session:
+  - expiration
+  - inactivity
+  - remember_me_duration
+- regulation:
+  - ban_time
+  - find_time
+- ntp:
+  - max_desync
+- webauthn:
+  - timeout
 
-|Unit   |Associated Letter|
-|:-----:|:---------------:|
-|Years  |y                |
-|Months |M                |
-|Weeks  |w                |
-|Days   |d                |
-|Hours  |h                |
-|Minutes|m                |
-|Seconds|s                |
+The way this format works is you can either configure an integer or a string in the specific configuration areas. If you
+supply an integer, it is considered a representation of seconds. If you supply a string, it parses the string in blocks
+of quantities and units (number followed by a unit letter).  For example `5h` indicates a quantity of 5 units of `h`.
 
-Examples:
-* 1 hour and 30 minutes: 90m
-* 1 day: 1d
-* 10 hours: 10h
+While you can use multiple of these blocks in combination, ee suggest keeping it simple and use a single value.
+
+## Duration Notation Format Unit Legend
+
+|  Unit   | Associated Letter |
+|:-------:|:-----------------:|
+|  Years  |         y         |
+| Months  |         M         |
+|  Weeks  |         w         |
+|  Days   |         d         |
+|  Hours  |         h         |
+| Minutes |         m         |
+| Seconds |         s         |
+
+## Duration Notation Format Examples
+
+|     Desired Value     |        Configuration Examples         |
+|:---------------------:|:-------------------------------------:|
+| 1 hour and 30 minutes | `90m` or `1h30m` or `5400` or `5400s` |
+|         1 day         | `1d` or `24h` or `86400` or `86400s`  |
+|       10 hours        | `10h` or `600m` or `9h60m` or `36000` |
 
 # TLS Configuration
 

internal/commands/helpers.go

@@ -57,10 +57,7 @@ func getProviders() (providers middlewares.Providers, warnings []error, errors [
 		notifier = notification.NewFileNotifier(*config.Notifier.FileSystem)
 	}
 
-	var ntpProvider *ntp.Provider
-	if config.NTP != nil {
-		ntpProvider = ntp.NewProvider(config.NTP)
-	}
+	ntpProvider := ntp.NewProvider(&config.NTP)
 
 	clock := utils.RealClock{}
 	authorizer := authorization.NewAuthorizer(config)

internal/configuration/decode_hooks.go

@@ -4,8 +4,11 @@ import (
 	"fmt"
 	"net/mail"
 	"reflect"
+	"time"
 
 	"github.com/mitchellh/mapstructure"
+
+	"github.com/authelia/authelia/v4/internal/utils"
 )
 
 // StringToMailAddressFunc decodes a string into a mail.Address.
@@ -33,3 +36,67 @@ func StringToMailAddressFunc() mapstructure.DecodeHookFunc {
 		return *mailAddress, nil
 	}
 }
+
+// ToTimeDurationFunc converts string and integer types to a time.Duration.
+func ToTimeDurationFunc() mapstructure.DecodeHookFuncType {
+	return func(f reflect.Type, t reflect.Type, data interface{}) (value interface{}, err error) {
+		var (
+			ptr bool
+		)
+
+		switch f.Kind() {
+		case reflect.String, reflect.Int, reflect.Int32, reflect.Int64:
+			// We only allow string and integer from kinds to match.
+			break
+		default:
+			return data, nil
+		}
+
+		typeTimeDuration := reflect.TypeOf(time.Hour)
+
+		if t.Kind() == reflect.Ptr {
+			if t.Elem() != typeTimeDuration {
+				return data, nil
+			}
+
+			ptr = true
+		} else if t != typeTimeDuration {
+			return data, nil
+		}
+
+		var duration time.Duration
+
+		switch {
+		case f.Kind() == reflect.String:
+			break
+		case f.Kind() == reflect.Int:
+			seconds := data.(int)
+
+			duration = time.Second * time.Duration(seconds)
+		case f.Kind() == reflect.Int32:
+			seconds := data.(int32)
+
+			duration = time.Second * time.Duration(seconds)
+		case f == typeTimeDuration:
+			duration = data.(time.Duration)
+		case f.Kind() == reflect.Int64:
+			seconds := data.(int64)
+
+			duration = time.Second * time.Duration(seconds)
+		}
+
+		if duration == 0 {
+			dataStr := data.(string)
+
+			if duration, err = utils.ParseDurationString(dataStr); err != nil {
+				return nil, err
+			}
+		}
+
+		if ptr {
+			return &duration, nil
+		}
+
+		return duration, nil
+	}
+}

internal/configuration/decode_hooks_test.go

@@ -0,0 +1,270 @@
+package configuration
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestToTimeDurationFunc_ShouldParse_String(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = "1h"
+		expected = time.Hour
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_String_Years(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = "1y"
+		expected = time.Hour * 24 * 365
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_String_Months(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = "1M"
+		expected = time.Hour * 24 * 30
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_String_Weeks(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = "1w"
+		expected = time.Hour * 24 * 7
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_String_Days(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = "1d"
+		expected = time.Hour * 24
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldNotParseAndRaiseErr_InvalidString(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from = "abc"
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.EqualError(t, err, "could not parse 'abc' as a duration")
+	assert.Nil(t, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.EqualError(t, err, "could not parse 'abc' as a duration")
+	assert.Nil(t, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_Int(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = 60
+		expected = time.Second * 60
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_Int32(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = int32(120)
+		expected = time.Second * 120
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_Int64(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = int64(30)
+		expected = time.Second * 30
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldParse_Duration(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from     = time.Second * 30
+		expected = time.Second * 30
+
+		to     time.Duration
+		ptrTo  *time.Duration
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, expected, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, &expected, result)
+}
+
+func TestToTimeDurationFunc_ShouldNotParse_Int64ToString(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from = int64(30)
+
+		to     string
+		ptrTo  *string
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, from, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, from, result)
+}
+
+func TestToTimeDurationFunc_ShouldNotParse_FromBool(t *testing.T) {
+	hook := ToTimeDurationFunc()
+
+	var (
+		from = true
+
+		to     string
+		ptrTo  *string
+		result interface{}
+		err    error
+	)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(to), from)
+	assert.NoError(t, err)
+	assert.Equal(t, from, result)
+
+	result, err = hook(reflect.TypeOf(from), reflect.TypeOf(ptrTo), from)
+	assert.NoError(t, err)
+	assert.Equal(t, from, result)
+}

internal/configuration/provider.go

@@ -43,9 +43,9 @@ func unmarshal(ko *koanf.Koanf, val *schema.StructValidator, path string, o inte
 	c := koanf.UnmarshalConf{
 		DecoderConfig: &mapstructure.DecoderConfig{
 			DecodeHook: mapstructure.ComposeDecodeHookFunc(
-				mapstructure.StringToTimeDurationHookFunc(),
 				mapstructure.StringToSliceHookFunc(","),
 				StringToMailAddressFunc(),
+				ToTimeDurationFunc(),
 			),
 			Metadata:         nil,
 			Result:           o,

internal/configuration/schema/configuration.go

@@ -14,8 +14,8 @@ type Configuration struct {
 	TOTP                  *TOTPConfiguration                 `koanf:"totp"`
 	DuoAPI                *DuoAPIConfiguration               `koanf:"duo_api"`
 	AccessControl         AccessControlConfiguration         `koanf:"access_control"`
-	NTP                   *NTPConfiguration                  `koanf:"ntp"`
-	Regulation            *RegulationConfiguration           `koanf:"regulation"`
+	NTP                   NTPConfiguration                   `koanf:"ntp"`
+	Regulation            RegulationConfiguration            `koanf:"regulation"`
 	Storage               StorageConfiguration               `koanf:"storage"`
 	Notifier              *NotifierConfiguration             `koanf:"notifier"`
 	Server                ServerConfiguration                `koanf:"server"`

internal/configuration/schema/ntp.go

@@ -1,17 +1,21 @@
 package schema
 
+import (
+	"time"
+)
+
 // NTPConfiguration represents the configuration related to ntp server.
 type NTPConfiguration struct {
-	Address             string `koanf:"address"`
-	Version             int    `koanf:"version"`
-	MaximumDesync       string `koanf:"max_desync"`
-	DisableStartupCheck bool   `koanf:"disable_startup_check"`
-	DisableFailure      bool   `koanf:"disable_failure"`
+	Address             string        `koanf:"address"`
+	Version             int           `koanf:"version"`
+	MaximumDesync       time.Duration `koanf:"max_desync"`
+	DisableStartupCheck bool          `koanf:"disable_startup_check"`
+	DisableFailure      bool          `koanf:"disable_failure"`
 }
 
 // DefaultNTPConfiguration represents default configuration parameters for the NTP server.
 var DefaultNTPConfiguration = NTPConfiguration{
 	Address:       "time.cloudflare.com:123",
 	Version:       4,
-	MaximumDesync: "3s",
+	MaximumDesync: time.Second * 3,
 }

internal/configuration/schema/regulation.go

@@ -1,15 +1,19 @@
 package schema
 
+import (
+	"time"
+)
+
 // RegulationConfiguration represents the configuration related to regulation.
 type RegulationConfiguration struct {
-	MaxRetries int    `koanf:"max_retries"`
-	FindTime   string `koanf:"find_time,weak"`
-	BanTime    string `koanf:"ban_time,weak"`
+	MaxRetries int           `koanf:"max_retries"`
+	FindTime   time.Duration `koanf:"find_time,weak"`
+	BanTime    time.Duration `koanf:"ban_time,weak"`
 }
 
 // DefaultRegulationConfiguration represents default configuration parameters for the regulator.
 var DefaultRegulationConfiguration = RegulationConfiguration{
 	MaxRetries: 3,
-	FindTime:   "2m",
-	BanTime:    "5m",
+	FindTime:   time.Minute * 2,
+	BanTime:    time.Minute * 5,
 }

internal/configuration/schema/session.go

@@ -1,5 +1,9 @@
 package schema
 
+import (
+	"time"
+)
+
 // RedisNode Represents a Node.
 type RedisNode struct {
 	Host string `koanf:"host"`
@@ -31,21 +35,22 @@ type RedisSessionConfiguration struct {
 
 // SessionConfiguration represents the configuration related to user sessions.
 type SessionConfiguration struct {
-	Name               string                     `koanf:"name"`
-	Domain             string                     `koanf:"domain"`
-	SameSite           string                     `koanf:"same_site"`
-	Secret             string                     `koanf:"secret"`
-	Expiration         string                     `koanf:"expiration"`
-	Inactivity         string                     `koanf:"inactivity"`
-	RememberMeDuration string                     `koanf:"remember_me_duration"`
-	Redis              *RedisSessionConfiguration `koanf:"redis"`
+	Name               string        `koanf:"name"`
+	Domain             string        `koanf:"domain"`
+	SameSite           string        `koanf:"same_site"`
+	Secret             string        `koanf:"secret"`
+	Expiration         time.Duration `koanf:"expiration"`
+	Inactivity         time.Duration `koanf:"inactivity"`
+	RememberMeDuration time.Duration `koanf:"remember_me_duration"`
+
+	Redis *RedisSessionConfiguration `koanf:"redis"`
 }
 
 // DefaultSessionConfiguration is the default session configuration.
 var DefaultSessionConfiguration = SessionConfiguration{
 	Name:               "authelia_session",
-	Expiration:         "1h",
-	Inactivity:         "5m",
-	RememberMeDuration: "1M",
+	Expiration:         time.Hour,
+	Inactivity:         time.Minute * 5,
+	RememberMeDuration: time.Hour * 24 * 30,
 	SameSite:           "lax",
 }

internal/configuration/validator/const.go

@@ -35,7 +35,6 @@ const (
 
 // Test constants.
 const (
-	testBadTimer      = "-1"
 	testInvalidPolicy = "invalid"
 	testJWTSecret     = "a_secret"
 	testLDAPBaseDN    = "base_dn"
@@ -185,13 +184,11 @@ const (
 
 // NTP Error constants.
 const (
-	errFmtNTPVersion   = "ntp: option 'version' must be either 3 or 4 but it is configured as '%d'"
-	errFmtNTPMaxDesync = "ntp: option 'max_desync' can't be parsed: %w"
+	errFmtNTPVersion = "ntp: option 'version' must be either 3 or 4 but it is configured as '%d'"
 )
 
 // Session error constants.
 const (
-	errFmtSessionCouldNotParseDuration    = "session: option '%s' could not be parsed: %w"
 	errFmtSessionOptionRequired           = "session: option '%s' is required"
 	errFmtSessionDomainMustBeRoot         = "session: option 'domain' must be the domain you wish to protect not a wildcard domain but it is configured as '%s'"
 	errFmtSessionSameSite                 = "session: option 'same_site' must be one of '%s' but is configured as '%s'"
@@ -206,7 +203,6 @@ const (
 
 // Regulation Error Consts.
 const (
-	errFmtRegulationParseDuration              = "regulation: option '%s' could not be parsed: %w"
 	errFmtRegulationFindTimeGreaterThanBanTime = "regulation: option 'find_time' must be less than or equal to option 'ban_time'"
 )
 

internal/configuration/validator/ntp.go

@@ -4,17 +4,10 @@ import (
 	"fmt"
 
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
-	"github.com/authelia/authelia/v4/internal/utils"
 )
 
 // ValidateNTP validates and update NTP configuration.
 func ValidateNTP(config *schema.Configuration, validator *schema.StructValidator) {
-	if config.NTP == nil {
-		config.NTP = &schema.DefaultNTPConfiguration
-
-		return
-	}
-
 	if config.NTP.Address == "" {
 		config.NTP.Address = schema.DefaultNTPConfiguration.Address
 	}
@@ -25,12 +18,7 @@ func ValidateNTP(config *schema.Configuration, validator *schema.StructValidator
 		validator.Push(fmt.Errorf(errFmtNTPVersion, config.NTP.Version))
 	}
 
-	if config.NTP.MaximumDesync == "" {
+	if config.NTP.MaximumDesync == 0 {
 		config.NTP.MaximumDesync = schema.DefaultNTPConfiguration.MaximumDesync
 	}
-
-	_, err := utils.ParseDurationString(config.NTP.MaximumDesync)
-	if err != nil {
-		validator.Push(fmt.Errorf(errFmtNTPMaxDesync, err))
-	}
 }

internal/configuration/validator/ntp_test.go

@@ -11,7 +11,7 @@ import (
 
 func newDefaultNTPConfig() schema.Configuration {
 	return schema.Configuration{
-		NTP: &schema.NTPConfiguration{},
+		NTP: schema.NTPConfiguration{},
 	}
 }
 
@@ -55,18 +55,6 @@ func TestShouldSetDefaultNtpDisableStartupCheck(t *testing.T) {
 	assert.Equal(t, schema.DefaultNTPConfiguration.DisableStartupCheck, config.NTP.DisableStartupCheck)
 }
 
-func TestShouldRaiseErrorOnMaximumDesyncString(t *testing.T) {
-	validator := schema.NewStructValidator()
-	config := newDefaultNTPConfig()
-	config.NTP.MaximumDesync = "a second"
-
-	ValidateNTP(&config, validator)
-
-	require.Len(t, validator.Errors(), 1)
-
-	assert.EqualError(t, validator.Errors()[0], "ntp: option 'max_desync' can't be parsed: could not parse 'a second' as a duration")
-}
-
 func TestShouldRaiseErrorOnInvalidNTPVersion(t *testing.T) {
 	validator := schema.NewStructValidator()
 	config := newDefaultNTPConfig()

internal/configuration/validator/regulation.go

@@ -4,36 +4,19 @@ import (
 	"fmt"
 
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
-	"github.com/authelia/authelia/v4/internal/utils"
 )
 
 // ValidateRegulation validates and update regulator configuration.
 func ValidateRegulation(config *schema.Configuration, validator *schema.StructValidator) {
-	if config.Regulation == nil {
-		config.Regulation = &schema.DefaultRegulationConfiguration
-
-		return
-	}
-
-	if config.Regulation.FindTime == "" {
+	if config.Regulation.FindTime == 0 {
 		config.Regulation.FindTime = schema.DefaultRegulationConfiguration.FindTime // 2 min.
 	}
 
-	if config.Regulation.BanTime == "" {
+	if config.Regulation.BanTime == 0 {
 		config.Regulation.BanTime = schema.DefaultRegulationConfiguration.BanTime // 5 min.
 	}
 
-	findTime, err := utils.ParseDurationString(config.Regulation.FindTime)
-	if err != nil {
-		validator.Push(fmt.Errorf(errFmtRegulationParseDuration, "find_time", err))
-	}
-
-	banTime, err := utils.ParseDurationString(config.Regulation.BanTime)
-	if err != nil {
-		validator.Push(fmt.Errorf(errFmtRegulationParseDuration, "ban_time", err))
-	}
-
-	if findTime > banTime {
+	if config.Regulation.FindTime > config.Regulation.BanTime {
 		validator.Push(fmt.Errorf(errFmtRegulationFindTimeGreaterThanBanTime))
 	}
 }

internal/configuration/validator/regulation_test.go

@@ -2,6 +2,7 @@ package validator
 
 import (
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 
@@ -10,7 +11,7 @@ import (
 
 func newDefaultRegulationConfig() schema.Configuration {
 	config := schema.Configuration{
-		Regulation: &schema.RegulationConfiguration{},
+		Regulation: schema.RegulationConfiguration{},
 	}
 
 	return config
@@ -39,24 +40,11 @@ func TestShouldSetDefaultRegulationFindTime(t *testing.T) {
 func TestShouldRaiseErrorWhenFindTimeLessThanBanTime(t *testing.T) {
 	validator := schema.NewStructValidator()
 	config := newDefaultRegulationConfig()
-	config.Regulation.FindTime = "1m"
-	config.Regulation.BanTime = "10s"
+	config.Regulation.FindTime = time.Minute
+	config.Regulation.BanTime = time.Second * 10
 
 	ValidateRegulation(&config, validator)
 
 	assert.Len(t, validator.Errors(), 1)
 	assert.EqualError(t, validator.Errors()[0], "regulation: option 'find_time' must be less than or equal to option 'ban_time'")
 }
-
-func TestShouldRaiseErrorOnBadDurationStrings(t *testing.T) {
-	validator := schema.NewStructValidator()
-	config := newDefaultRegulationConfig()
-	config.Regulation.FindTime = "a year"
-	config.Regulation.BanTime = "forever"
-
-	ValidateRegulation(&config, validator)
-
-	assert.Len(t, validator.Errors(), 2)
-	assert.EqualError(t, validator.Errors()[0], "regulation: option 'find_time' could not be parsed: could not parse 'a year' as a duration")
-	assert.EqualError(t, validator.Errors()[1], "regulation: option 'ban_time' could not be parsed: could not parse 'forever' as a duration")
-}

internal/configuration/validator/session.go

@@ -27,22 +27,16 @@ func ValidateSession(config *schema.SessionConfiguration, validator *schema.Stru
 }
 
 func validateSession(config *schema.SessionConfiguration, validator *schema.StructValidator) {
-	if config.Expiration == "" {
+	if config.Expiration <= 0 {
 		config.Expiration = schema.DefaultSessionConfiguration.Expiration // 1 hour.
-	} else if _, err := utils.ParseDurationString(config.Expiration); err != nil {
-		validator.Push(fmt.Errorf(errFmtSessionCouldNotParseDuration, "expiriation", err))
 	}
 
-	if config.Inactivity == "" {
+	if config.Inactivity <= 0 {
 		config.Inactivity = schema.DefaultSessionConfiguration.Inactivity // 5 min.
-	} else if _, err := utils.ParseDurationString(config.Inactivity); err != nil {
-		validator.Push(fmt.Errorf(errFmtSessionCouldNotParseDuration, "inactivity", err))
 	}
 
-	if config.RememberMeDuration == "" {
+	if config.RememberMeDuration <= 0 {
 		config.RememberMeDuration = schema.DefaultSessionConfiguration.RememberMeDuration // 1 month.
-	} else if _, err := utils.ParseDurationString(config.RememberMeDuration); err != nil {
-		validator.Push(fmt.Errorf(errFmtSessionCouldNotParseDuration, "remember_me_duration", err))
 	}
 
 	if config.Domain == "" {

internal/configuration/validator/session_test.go

@@ -420,30 +420,21 @@ func TestShouldNotRaiseErrorWhenSameSiteSetCorrectly(t *testing.T) {
 	}
 }
 
-func TestShouldRaiseErrorWhenBadInactivityAndExpirationSet(t *testing.T) {
+func TestShouldSetDefaultWhenNegativeInactivityAndExpirationSet(t *testing.T) {
 	validator := schema.NewStructValidator()
 	config := newDefaultSessionConfig()
-	config.Inactivity = testBadTimer
-	config.Expiration = testBadTimer
+	config.Inactivity = -1
+	config.Expiration = -1
+	config.RememberMeDuration = -1
 
 	ValidateSession(&config, validator)
 
-	assert.False(t, validator.HasWarnings())
-	assert.Len(t, validator.Errors(), 2)
-	assert.EqualError(t, validator.Errors()[0], "session: option 'expiriation' could not be parsed: could not parse '-1' as a duration")
-	assert.EqualError(t, validator.Errors()[1], "session: option 'inactivity' could not be parsed: could not parse '-1' as a duration")
-}
+	assert.Len(t, validator.Warnings(), 0)
+	assert.Len(t, validator.Errors(), 0)
 
-func TestShouldRaiseErrorWhenBadRememberMeDurationSet(t *testing.T) {
-	validator := schema.NewStructValidator()
-	config := newDefaultSessionConfig()
-	config.RememberMeDuration = "1 year"
-
-	ValidateSession(&config, validator)
-
-	assert.False(t, validator.HasWarnings())
-	assert.Len(t, validator.Errors(), 1)
-	assert.EqualError(t, validator.Errors()[0], "session: option 'remember_me_duration' could not be parsed: could not parse '1 year' as a duration")
+	assert.Equal(t, schema.DefaultSessionConfiguration.Inactivity, config.Inactivity)
+	assert.Equal(t, schema.DefaultSessionConfiguration.Expiration, config.Expiration)
+	assert.Equal(t, schema.DefaultSessionConfiguration.RememberMeDuration, config.RememberMeDuration)
 }
 
 func TestShouldSetDefaultRememberMeDuration(t *testing.T) {

internal/handlers/const.go

@@ -1,6 +1,8 @@
 package handlers
 
 import (
+	"time"
+
 	"github.com/valyala/fasthttp"
 )
 
@@ -56,7 +58,7 @@ const (
 )
 
 const (
-	testInactivity     = "10"
+	testInactivity     = time.Second * 10
 	testRedirectionURL = "http://redirection.local"
 	testUsername       = "john"
 )

internal/handlers/handler_verify_test.go

@@ -602,7 +602,7 @@ func TestShouldDestroySessionWhenInactiveForTooLongUsingDurationNotation(t *test
 	clock := mocks.TestingClock{}
 	clock.Set(time.Now())
 
-	mock.Ctx.Configuration.Session.Inactivity = "10s"
+	mock.Ctx.Configuration.Session.Inactivity = time.Second * 10
 	// Reload the session provider since the configuration is indirect.
 	mock.Ctx.Providers.SessionProvider = session.NewProvider(mock.Ctx.Configuration.Session, nil)
 	assert.Equal(t, time.Second*10, mock.Ctx.Providers.SessionProvider.Inactivity)

internal/ntp/ntp.go

@@ -8,7 +8,6 @@ import (
 
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
 	"github.com/authelia/authelia/v4/internal/logging"
-	"github.com/authelia/authelia/v4/internal/utils"
 )
 
 // NewProvider instantiate a ntp provider given a configuration.
@@ -59,11 +58,9 @@ func (p *Provider) StartupCheck() (err error) {
 		return nil
 	}
 
-	maxOffset, _ := utils.ParseDurationString(p.config.MaximumDesync)
-
 	ntpTime := ntpPacketToTime(resp)
 
-	if result := ntpIsOffsetTooLarge(maxOffset, now, ntpTime); result {
+	if result := ntpIsOffsetTooLarge(p.config.MaximumDesync, now, ntpTime); result {
 		return errors.New("the system clock is not synchronized accurately enough with the configured NTP server")
 	}
 

internal/ntp/ntp_test.go

@@ -2,6 +2,7 @@ package ntp
 
 import (
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 
@@ -11,18 +12,17 @@ import (
 
 func TestShouldCheckNTP(t *testing.T) {
 	config := &schema.Configuration{
-		NTP: &schema.NTPConfiguration{
-			Address:             "time.cloudflare.com:123",
-			Version:             4,
-			MaximumDesync:       "3s",
-			DisableStartupCheck: false,
+		NTP: schema.NTPConfiguration{
+			Address:       "time.cloudflare.com:123",
+			Version:       4,
+			MaximumDesync: time.Second * 3,
 		},
 	}
 
 	sv := schema.NewStructValidator()
 	validator.ValidateNTP(config, sv)
 
-	ntp := NewProvider(config.NTP)
+	ntp := NewProvider(&config.NTP)
 
 	assert.NoError(t, ntp.StartupCheck())
 }

internal/regulation/regulator.go

@@ -2,7 +2,6 @@ package regulation
 
 import (
 	"context"
-	"fmt"
 	"net"
 	"time"
 
@@ -13,33 +12,13 @@ import (
 )
 
 // NewRegulator create a regulator instance.
-func NewRegulator(configuration *schema.RegulationConfiguration, provider storage.RegulatorProvider, clock utils.Clock) *Regulator {
-	regulator := &Regulator{storageProvider: provider}
-	regulator.clock = clock
-
-	if configuration != nil {
-		findTime, err := utils.ParseDurationString(configuration.FindTime)
-		if err != nil {
-			panic(err)
-		}
-
-		banTime, err := utils.ParseDurationString(configuration.BanTime)
-		if err != nil {
-			panic(err)
-		}
-
-		if findTime > banTime {
-			panic(fmt.Errorf("find_time cannot be greater than ban_time"))
-		}
-
-		// Set regulator enabled only if MaxRetries is not 0.
-		regulator.enabled = configuration.MaxRetries > 0
-		regulator.maxRetries = configuration.MaxRetries
-		regulator.findTime = findTime
-		regulator.banTime = banTime
+func NewRegulator(config schema.RegulationConfiguration, provider storage.RegulatorProvider, clock utils.Clock) *Regulator {
+	return &Regulator{
+		enabled:         config.MaxRetries > 0,
+		storageProvider: provider,
+		clock:           clock,
+		config:          config,
 	}
-
-	return regulator
 }
 
 // Mark an authentication attempt.
@@ -65,15 +44,15 @@ func (r *Regulator) Regulate(ctx context.Context, username string) (time.Time, e
 		return time.Time{}, nil
 	}
 
-	attempts, err := r.storageProvider.LoadAuthenticationLogs(ctx, username, r.clock.Now().Add(-r.banTime), 10, 0)
+	attempts, err := r.storageProvider.LoadAuthenticationLogs(ctx, username, r.clock.Now().Add(-r.config.BanTime), 10, 0)
 	if err != nil {
 		return time.Time{}, nil
 	}
 
-	latestFailedAttempts := make([]models.AuthenticationAttempt, 0, r.maxRetries)
+	latestFailedAttempts := make([]models.AuthenticationAttempt, 0, r.config.MaxRetries)
 
 	for _, attempt := range attempts {
-		if attempt.Successful || len(latestFailedAttempts) >= r.maxRetries {
+		if attempt.Successful || len(latestFailedAttempts) >= r.config.MaxRetries {
 			// We stop appending failed attempts once we find the first successful attempts or we reach
 			// the configured number of retries, meaning the user is already banned.
 			break
@@ -84,17 +63,17 @@ func (r *Regulator) Regulate(ctx context.Context, username string) (time.Time, e
 
 	// If the number of failed attempts within the ban time is less than the max number of retries
 	// then the user is not banned.
-	if len(latestFailedAttempts) < r.maxRetries {
+	if len(latestFailedAttempts) < r.config.MaxRetries {
 		return time.Time{}, nil
 	}
 
 	// Now we compute the time between the latest attempt and the MaxRetry-th one. If it's
 	// within the FindTime then it means that the user has been banned.
 	durationBetweenLatestAttempts := latestFailedAttempts[0].Time.Sub(
-		latestFailedAttempts[r.maxRetries-1].Time)
+		latestFailedAttempts[r.config.MaxRetries-1].Time)
 
-	if durationBetweenLatestAttempts < r.findTime {
-		bannedUntil := latestFailedAttempts[0].Time.Add(r.banTime)
+	if durationBetweenLatestAttempts < r.config.FindTime {
+		bannedUntil := latestFailedAttempts[0].Time.Add(r.config.BanTime)
 		return bannedUntil, ErrUserIsBanned
 	}
 

internal/regulation/regulator_test.go

@@ -18,11 +18,11 @@ import (
 type RegulatorSuite struct {
 	suite.Suite
 
-	ctx           context.Context
-	ctrl          *gomock.Controller
-	storageMock   *mocks.MockStorage
-	configuration schema.RegulationConfiguration
-	clock         mocks.TestingClock
+	ctx         context.Context
+	ctrl        *gomock.Controller
+	storageMock *mocks.MockStorage
+	config      schema.RegulationConfiguration
+	clock       mocks.TestingClock
 }
 
 func (s *RegulatorSuite) SetupTest() {
@@ -30,10 +30,10 @@ func (s *RegulatorSuite) SetupTest() {
 	s.storageMock = mocks.NewMockStorage(s.ctrl)
 	s.ctx = context.Background()
 
-	s.configuration = schema.RegulationConfiguration{
+	s.config = schema.RegulationConfiguration{
 		MaxRetries: 3,
-		BanTime:    "180",
-		FindTime:   "30",
+		BanTime:    time.Second * 180,
+		FindTime:   time.Second * 30,
 	}
 	s.clock.Set(time.Now())
 }
@@ -55,7 +55,7 @@ func (s *RegulatorSuite) TestShouldNotThrowWhenUserIsLegitimate() {
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.NoError(s.T(), err)
@@ -86,7 +86,7 @@ func (s *RegulatorSuite) TestShouldNotThrowWhenFailedAuthenticationNotInFindTime
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.NoError(s.T(), err)
@@ -122,7 +122,7 @@ func (s *RegulatorSuite) TestShouldBanUserIfLatestAttemptsAreWithinFinTime() {
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.Equal(s.T(), regulation.ErrUserIsBanned, err)
@@ -155,7 +155,7 @@ func (s *RegulatorSuite) TestShouldCheckUserIsStillBanned() {
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.Equal(s.T(), regulation.ErrUserIsBanned, err)
@@ -179,7 +179,7 @@ func (s *RegulatorSuite) TestShouldCheckUserIsNotYetBanned() {
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.NoError(s.T(), err)
@@ -211,7 +211,7 @@ func (s *RegulatorSuite) TestShouldCheckUserWasAboutToBeBanned() {
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.NoError(s.T(), err)
@@ -247,7 +247,7 @@ func (s *RegulatorSuite) TestShouldCheckRegulationHasBeenResetOnSuccessfulAttemp
 		LoadAuthenticationLogs(s.ctx, gomock.Eq("john"), gomock.Any(), gomock.Eq(10), gomock.Eq(0)).
 		Return(attemptsInDB, nil)
 
-	regulator := regulation.NewRegulator(&s.configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(s.config, s.storageMock, &s.clock)
 
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.NoError(s.T(), err)
@@ -283,24 +283,24 @@ func (s *RegulatorSuite) TestShouldHaveRegulatorDisabled() {
 		Return(attemptsInDB, nil)
 
 	// Check Disabled Functionality.
-	configuration := schema.RegulationConfiguration{
+	config := schema.RegulationConfiguration{
 		MaxRetries: 0,
-		FindTime:   "180",
-		BanTime:    "180",
+		FindTime:   time.Second * 180,
+		BanTime:    time.Second * 180,
 	}
 
-	regulator := regulation.NewRegulator(&configuration, s.storageMock, &s.clock)
+	regulator := regulation.NewRegulator(config, s.storageMock, &s.clock)
 	_, err := regulator.Regulate(s.ctx, "john")
 	assert.NoError(s.T(), err)
 
 	// Check Enabled Functionality.
-	configuration = schema.RegulationConfiguration{
+	config = schema.RegulationConfiguration{
 		MaxRetries: 1,
-		FindTime:   "180",
-		BanTime:    "180",
+		FindTime:   time.Second * 180,
+		BanTime:    time.Second * 180,
 	}
 
-	regulator = regulation.NewRegulator(&configuration, s.storageMock, &s.clock)
+	regulator = regulation.NewRegulator(config, s.storageMock, &s.clock)
 	_, err = regulator.Regulate(s.ctx, "john")
 	assert.Equal(s.T(), regulation.ErrUserIsBanned, err)
 }

internal/regulation/types.go

@@ -1,8 +1,7 @@
 package regulation
 
 import (
-	"time"
-
+	"github.com/authelia/authelia/v4/internal/configuration/schema"
 	"github.com/authelia/authelia/v4/internal/storage"
 	"github.com/authelia/authelia/v4/internal/utils"
 )
@@ -11,12 +10,8 @@ import (
 type Regulator struct {
 	// Is the regulation enabled.
 	enabled bool
-	// The number of failed authentication attempt before banning the user.
-	maxRetries int
-	// If a user does the max number of retries within that duration, she will be banned.
-	findTime time.Duration
-	// If a user has been banned, this duration is the timelapse during which the user is banned.
-	banTime time.Duration
+
+	config schema.RegulationConfiguration
 
 	storageProvider storage.RegulatorProvider
 

internal/server/server.go

@@ -28,7 +28,7 @@ var assets embed.FS
 
 func registerRoutes(configuration schema.Configuration, providers middlewares.Providers) fasthttp.RequestHandler {
 	autheliaMiddleware := middlewares.AutheliaMiddleware(configuration, providers)
-	rememberMe := strconv.FormatBool(configuration.Session.RememberMeDuration != "0")
+	rememberMe := strconv.FormatBool(configuration.Session.RememberMeDuration != -1)
 	resetPassword := strconv.FormatBool(!configuration.AuthenticationBackend.DisableResetPassword)
 
 	duoSelfEnrollment := f

internal/session/const.go

@@ -1,8 +1,12 @@
 package session
 
+import (
+	"time"
+)
+
 const (
 	testDomain     = "example.com"
-	testExpiration = "40"
+	testExpiration = time.Second * 40
 	testName       = "my_session"
 	testUsername   = "john"
 )

internal/session/provider.go

@@ -12,7 +12,6 @@ import (
 
 	"github.com/authelia/authelia/v4/internal/configuration/schema"
 	"github.com/authelia/authelia/v4/internal/logging"
-	"github.com/authelia/authelia/v4/internal/utils"
 )
 
 // Provider a session provider.
@@ -23,38 +22,29 @@ type Provider struct {
 }
 
 // NewProvider instantiate a session provider given a configuration.
-func NewProvider(configuration schema.SessionConfiguration, certPool *x509.CertPool) *Provider {
-	providerConfig := NewProviderConfig(configuration, certPool)
+func NewProvider(config schema.SessionConfiguration, certPool *x509.CertPool) *Provider {
+	c := NewProviderConfig(config, certPool)
 
 	provider := new(Provider)
-	provider.sessionHolder = fasthttpsession.New(providerConfig.config)
+	provider.sessionHolder = fasthttpsession.New(c.config)
 
 	logger := logging.Logger()
 
-	duration, err := utils.ParseDurationString(configuration.RememberMeDuration)
-	if err != nil {
-		logger.Fatal(err)
-	}
+	provider.Inactivity, provider.RememberMe = config.Inactivity, config.RememberMeDuration
 
-	provider.RememberMe = duration
-
-	duration, err = utils.ParseDurationString(configuration.Inactivity)
-	if err != nil {
-		logger.Fatal(err)
-	}
-
-	provider.Inactivity = duration
-
-	var providerImpl fasthttpsession.Provider
+	var (
+		providerImpl fasthttpsession.Provider
+		err          error
+	)
 
 	switch {
-	case providerConfig.redisConfig != nil:
-		providerImpl, err = redis.New(*providerConfig.redisConfig)
+	case c.redisConfig != nil:
+		providerImpl, err = redis.New(*c.redisConfig)
 		if err != nil {
 			logger.Fatal(err)
 		}
-	case providerConfig.redisSentinelConfig != nil:
-		providerImpl, err = redis.NewFailoverCluster(*providerConfig.redisSentinelConfig)
+	case c.redisSentinelConfig != nil:
+		providerImpl, err = redis.NewFailoverCluster(*c.redisSentinelConfig)
 		if err != nil {
 			logger.Fatal(err)
 		}

internal/session/provider_config.go

@@ -17,10 +17,10 @@ import (
 )
 
 // NewProviderConfig creates a configuration for creating the session provider.
-func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509.CertPool) ProviderConfig {
-	config := session.NewDefaultConfig()
+func NewProviderConfig(config schema.SessionConfiguration, certPool *x509.CertPool) ProviderConfig {
+	c := session.NewDefaultConfig()
 
-	config.SessionIDGeneratorFunc = func() []byte {
+	c.SessionIDGeneratorFunc = func() []byte {
 		bytes := make([]byte, 32)
 
 		_, _ = rand.Read(bytes)
@@ -33,30 +33,30 @@ func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509
 	}
 
 	// Override the cookie name.
-	config.CookieName = configuration.Name
+	c.CookieName = config.Name
 
 	// Set the cookie to the given domain.
-	config.Domain = configuration.Domain
+	c.Domain = config.Domain
 
 	// Set the cookie SameSite option.
-	switch configuration.SameSite {
+	switch config.SameSite {
 	case "strict":
-		config.CookieSameSite = fasthttp.CookieSameSiteStrictMode
+		c.CookieSameSite = fasthttp.CookieSameSiteStrictMode
 	case "none":
-		config.CookieSameSite = fasthttp.CookieSameSiteNoneMode
+		c.CookieSameSite = fasthttp.CookieSameSiteNoneMode
 	case "lax":
-		config.CookieSameSite = fasthttp.CookieSameSiteLaxMode
+		c.CookieSameSite = fasthttp.CookieSameSiteLaxMode
 	default:
-		config.CookieSameSite = fasthttp.CookieSameSiteLaxMode
+		c.CookieSameSite = fasthttp.CookieSameSiteLaxMode
 	}
 
 	// Only serve the header over HTTPS.
-	config.Secure = true
+	c.Secure = true
 
 	// Ignore the error as it will be handled by validator.
-	config.Expiration, _ = utils.ParseDurationString(configuration.Expiration)
+	c.Expiration = config.Expiration
 
-	config.IsSecureFunc = func(*fasthttp.RequestCtx) bool {
+	c.IsSecureFunc = func(*fasthttp.RequestCtx) bool {
 		return true
 	}
 
@@ -68,23 +68,23 @@ func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509
 
 	// If redis configuration is provided, then use the redis provider.
 	switch {
-	case configuration.Redis != nil:
-		serializer := NewEncryptingSerializer(configuration.Secret)
+	case config.Redis != nil:
+		serializer := NewEncryptingSerializer(config.Secret)
 
 		var tlsConfig *tls.Config
 
-		if configuration.Redis.TLS != nil {
-			tlsConfig = utils.NewTLSConfig(configuration.Redis.TLS, tls.VersionTLS12, certPool)
+		if config.Redis.TLS != nil {
+			tlsConfig = utils.NewTLSConfig(config.Redis.TLS, tls.VersionTLS12, certPool)
 		}
 
-		if configuration.Redis.HighAvailability != nil && configuration.Redis.HighAvailability.SentinelName != "" {
+		if config.Redis.HighAvailability != nil && config.Redis.HighAvailability.SentinelName != "" {
 			addrs := make([]string, 0)
 
-			if configuration.Redis.Host != "" {
-				addrs = append(addrs, fmt.Sprintf("%s:%d", strings.ToLower(configuration.Redis.Host), configuration.Redis.Port))
+			if config.Redis.Host != "" {
+				addrs = append(addrs, fmt.Sprintf("%s:%d", strings.ToLower(config.Redis.Host), config.Redis.Port))
 			}
 
-			for _, node := range configuration.Redis.HighAvailability.Nodes {
+			for _, node := range config.Redis.HighAvailability.Nodes {
 				addr := fmt.Sprintf("%s:%d", strings.ToLower(node.Host), node.Port)
 				if !utils.IsStringInSlice(addr, addrs) {
 					addrs = append(addrs, addr)
@@ -94,17 +94,17 @@ func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509
 			providerName = "redis-sentinel"
 			redisSentinelConfig = &redis.FailoverConfig{
 				Logger:           &redisLogger{logger: logging.Logger()},
-				MasterName:       configuration.Redis.HighAvailability.SentinelName,
+				MasterName:       config.Redis.HighAvailability.SentinelName,
 				SentinelAddrs:    addrs,
-				SentinelUsername: configuration.Redis.HighAvailability.SentinelUsername,
-				SentinelPassword: configuration.Redis.HighAvailability.SentinelPassword,
-				RouteByLatency:   configuration.Redis.HighAvailability.RouteByLatency,
-				RouteRandomly:    configuration.Redis.HighAvailability.RouteRandomly,
-				Username:         configuration.Redis.Username,
-				Password:         configuration.Redis.Password,
-				DB:               configuration.Redis.DatabaseIndex, // DB is the fasthttp/session property for the Redis DB Index.
-				PoolSize:         configuration.Redis.MaximumActiveConnections,
-				MinIdleConns:     configuration.Redis.MinimumIdleConnections,
+				SentinelUsername: config.Redis.HighAvailability.SentinelUsername,
+				SentinelPassword: config.Redis.HighAvailability.SentinelPassword,
+				RouteByLatency:   config.Redis.HighAvailability.RouteByLatency,
+				RouteRandomly:    config.Redis.HighAvailability.RouteRandomly,
+				Username:         config.Redis.Username,
+				Password:         config.Redis.Password,
+				DB:               config.Redis.DatabaseIndex, // DB is the fasthttp/session property for the Redis DB Index.
+				PoolSize:         config.Redis.MaximumActiveConnections,
+				MinIdleConns:     config.Redis.MinimumIdleConnections,
 				IdleTimeout:      300,
 				TLSConfig:        tlsConfig,
 				KeyPrefix:        "authelia-session",
@@ -115,36 +115,36 @@ func NewProviderConfig(configuration schema.SessionConfiguration, certPool *x509
 
 			var addr string
 
-			if configuration.Redis.Port == 0 {
+			if config.Redis.Port == 0 {
 				network = "unix"
-				addr = configuration.Redis.Host
+				addr = config.Redis.Host
 			} else {
-				addr = fmt.Sprintf("%s:%d", configuration.Redis.Host, configuration.Redis.Port)
+				addr = fmt.Sprintf("%s:%d", config.Redis.Host, config.Redis.Port)
 			}
 
 			redisConfig = &redis.Config{
 				Logger:       newRedisLogger(),
 				Network:      network,
 				Addr:         addr,
-				Username:     configuration.Redis.Username,
-				Password:     configuration.Redis.Password,
-				DB:           configuration.Redis.DatabaseIndex, // DB is the fasthttp/session property for the Redis DB Index.
-				PoolSize:     configuration.Redis.MaximumActiveConnections,
-				MinIdleConns: configuration.Redis.MinimumIdleConnections,
+				Username:     config.Redis.Username,
+				Password:     config.Redis.Password,
+				DB:           config.Redis.DatabaseIndex, // DB is the fasthttp/session property for the Redis DB Index.
+				PoolSize:     config.Redis.MaximumActiveConnections,
+				MinIdleConns: config.Redis.MinimumIdleConnections,
 				IdleTimeout:  300,
 				TLSConfig:    tlsConfig,
 				KeyPrefix:    "authelia-session",
 			}
 		}
 
-		config.EncodeFunc = serializer.Encode
-		config.DecodeFunc = serializer.Decode
+		c.EncodeFunc = serializer.Encode
+		c.DecodeFunc = serializer.Decode
 	default:
 		providerName = "memory"
 	}
 
 	return ProviderConfig{
-		config,
+		c,
 		redisConfig,
 		redisSentinelConfig,
 		providerName,

internal/utils/const.go

@@ -53,7 +53,25 @@ const (
 )
 
 var (
-	reDuration = regexp.MustCompile(`^(?P<Duration>[1-9]\d*?)(?P<Unit>[smhdwMy])?$`)
+	standardDurationUnits = []string{"ns", "us", "µs", "μs", "ms", "s", "m", "h"}
+	reDurationSeconds     = regexp.MustCompile(`^\d+$`)
+	reDurationStandard    = regexp.MustCompile(`(?P<Duration>[1-9]\d*?)(?P<Unit>[^\d\s]+)`)
+)
+
+// Duration unit types.
+const (
+	DurationUnitDays   = "d"
+	DurationUnitWeeks  = "w"
+	DurationUnitMonths = "M"
+	DurationUnitYears  = "y"
+)
+
+// Number of hours in particular measurements of time.
+const (
+	HoursInDay   = 24
+	HoursInWeek  = HoursInDay * 7
+	HoursInMonth = HoursInDay * 30
+	HoursInYear  = HoursInDay * 365
 )
 
 var (

internal/utils/time.go

@@ -6,46 +6,64 @@ import (
 	"time"
 )
 
-// ParseDurationString parses a string to a duration
-// Duration notations are an integer followed by a unit
-// Units are s = second, m = minute, d = day, w = week, M = month, y = year
-// Example 1y is the same as 1 year.
-func ParseDurationString(input string) (time.Duration, error) {
-	var duration time.Duration
-
-	matches := reDuration.FindStringSubmatch(input)
-
-	switch {
-	case len(matches) == 3 && matches[2] != "":
-		d, _ := strconv.Atoi(matches[1])
-
-		switch matches[2] {
-		case "y":
-			duration = time.Duration(d) * Year
-		case "M":
-			duration = time.Duration(d) * Month
-		case "w":
-			duration = time.Duration(d) * Week
-		case "d":
-			duration = time.Duration(d) * Day
-		case "h":
-			duration = time.Duration(d) * Hour
-		case "m":
-			duration = time.Duration(d) * time.Minute
-		case "s":
-			duration = time.Duration(d) * time.Second
-		}
-	case input == "0" || len(matches) == 3:
-		seconds, err := strconv.Atoi(input)
-		if err != nil {
-			return 0, fmt.Errorf("could not parse '%s' as a duration: %w", input, err)
-		}
-
-		duration = time.Duration(seconds) * time.Second
-	case input != "":
-		// Throw this error if input is anything other than a blank string, blank string will default to a duration of nothing.
-		return 0, fmt.Errorf("could not parse '%s' as a duration", input)
+// StandardizeDurationString converts units of time that stdlib is unaware of to hours.
+func StandardizeDurationString(input string) (output string, err error) {
+	if input == "" {
+		return "0s", nil
 	}
 
-	return duration, nil
+	matches := reDurationStandard.FindAllStringSubmatch(input, -1)
+
+	if len(matches) == 0 {
+		return "", fmt.Errorf("could not parse '%s' as a duration", input)
+	}
+
+	var d int
+
+	for _, match := range matches {
+		if d, err = strconv.Atoi(match[1]); err != nil {
+			return "", fmt.Errorf("could not parse the numeric portion of '%s' in duration string '%s': %w", match[0], input, err)
+		}
+
+		unit := match[2]
+
+		switch {
+		case IsStringInSlice(unit, standardDurationUnits):
+			output += fmt.Sprintf("%d%s", d, unit)
+		case unit == DurationUnitDays:
+			output += fmt.Sprintf("%dh", d*HoursInDay)
+		case unit == DurationUnitWeeks:
+			output += fmt.Sprintf("%dh", d*HoursInWeek)
+		case unit == DurationUnitMonths:
+			output += fmt.Sprintf("%dh", d*HoursInMonth)
+		case unit == DurationUnitYears:
+			output += fmt.Sprintf("%dh", d*HoursInYear)
+		default:
+			return "", fmt.Errorf("could not parse the units portion of '%s' in duration string '%s': the unit '%s' is not valid", match[0], input, unit)
+		}
+	}
+
+	return output, nil
+}
+
+// ParseDurationString standardizes a duration string with StandardizeDurationString then uses time.ParseDuration to
+// convert it into a time.Duration.
+func ParseDurationString(input string) (duration time.Duration, err error) {
+	if reDurationSeconds.MatchString(input) {
+		var seconds int
+
+		if seconds, err = strconv.Atoi(input); err != nil {
+			return 0, nil
+		}
+
+		return time.Second * time.Duration(seconds), nil
+	}
+
+	var out string
+
+	if out, err = StandardizeDurationString(input); err != nil {
+		return 0, err
+	}
+
+	return time.ParseDuration(out)
 }

internal/utils/time_test.go

@@ -7,66 +7,112 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestShouldParseDurationString(t *testing.T) {
+func TestParseDurationString_ShouldParseDurationString(t *testing.T) {
 	duration, err := ParseDurationString("1h")
+
 	assert.NoError(t, err)
 	assert.Equal(t, 60*time.Minute, duration)
 }
 
-func TestShouldParseDurationStringAllUnits(t *testing.T) {
-	duration, err := ParseDurationString("1y")
+func TestParseDurationString_ShouldParseBlankString(t *testing.T) {
+	duration, err := ParseDurationString("")
+
 	assert.NoError(t, err)
-	assert.Equal(t, Year, duration)
+	assert.Equal(t, time.Second*0, duration)
+}
+
+func TestParseDurationString_ShouldParseDurationStringAllUnits(t *testing.T) {
+	duration, err := ParseDurationString("1y")
+
+	assert.NoError(t, err)
+	assert.Equal(t, time.Hour*24*365, duration)
 
 	duration, err = ParseDurationString("1M")
+
 	assert.NoError(t, err)
-	assert.Equal(t, Month, duration)
+	assert.Equal(t, time.Hour*24*30, duration)
 
 	duration, err = ParseDurationString("1w")
+
 	assert.NoError(t, err)
-	assert.Equal(t, Week, duration)
+	assert.Equal(t, time.Hour*24*7, duration)
 
 	duration, err = ParseDurationString("1d")
+
 	assert.NoError(t, err)
-	assert.Equal(t, Day, duration)
+	assert.Equal(t, time.Hour*24, duration)
 
 	duration, err = ParseDurationString("1h")
+
 	assert.NoError(t, err)
-	assert.Equal(t, Hour, duration)
+	assert.Equal(t, time.Hour, duration)
 
 	duration, err = ParseDurationString("1s")
+
 	assert.NoError(t, err)
 	assert.Equal(t, time.Second, duration)
 }
 
-func TestShouldParseSecondsString(t *testing.T) {
+func TestParseDurationString_ShouldParseSecondsString(t *testing.T) {
 	duration, err := ParseDurationString("100")
+
 	assert.NoError(t, err)
 	assert.Equal(t, 100*time.Second, duration)
 }
 
-func TestShouldNotParseDurationStringWithOutOfOrderQuantitiesAndUnits(t *testing.T) {
+func TestParseDurationString_ShouldNotParseDurationStringWithOutOfOrderQuantitiesAndUnits(t *testing.T) {
 	duration, err := ParseDurationString("h1")
+
 	assert.EqualError(t, err, "could not parse 'h1' as a duration")
 	assert.Equal(t, time.Duration(0), duration)
 }
 
-func TestShouldNotParseBadDurationString(t *testing.T) {
+func TestParseDurationString_ShouldNotParseBadDurationString(t *testing.T) {
 	duration, err := ParseDurationString("10x")
-	assert.EqualError(t, err, "could not parse '10x' as a duration")
+
+	assert.EqualError(t, err, "could not parse the units portion of '10x' in duration string '10x': the unit 'x' is not valid")
 	assert.Equal(t, time.Duration(0), duration)
 }
 
-func TestShouldNotParseDurationStringWithMultiValueUnits(t *testing.T) {
+func TestParseDurationString_ShouldParseDurationStringWithMultiValueUnits(t *testing.T) {
 	duration, err := ParseDurationString("10ms")
-	assert.EqualError(t, err, "could not parse '10ms' as a duration")
-	assert.Equal(t, time.Duration(0), duration)
+
+	assert.NoError(t, err)
+	assert.Equal(t, time.Duration(10)*time.Millisecond, duration)
 }
 
-func TestShouldNotParseDurationStringWithLeadingZero(t *testing.T) {
+func TestParseDurationString_ShouldParseDurationStringWithLeadingZero(t *testing.T) {
 	duration, err := ParseDurationString("005h")
-	assert.EqualError(t, err, "could not parse '005h' as a duration")
-	assert.Equal(t, time.Duration(0), duration)
+
+	assert.NoError(t, err)
+	assert.Equal(t, time.Duration(5)*time.Hour, duration)
+}
+
+func TestParseDurationString_ShouldParseMultiUnitValues(t *testing.T) {
+	duration, err := ParseDurationString("1d3w10ms")
+
+	assert.NoError(t, err)
+	assert.Equal(t,
+		(time.Hour*time.Duration(24))+
+			(time.Hour*time.Duration(24)*time.Duration(7)*time.Duration(3))+
+			(time.Millisecond*time.Duration(10)), duration)
+}
+
+func TestParseDurationString_ShouldParseDuplicateUnitValues(t *testing.T) {
+	duration, err := ParseDurationString("1d4d2d")
+
+	assert.NoError(t, err)
+	assert.Equal(t,
+		(time.Hour*time.Duration(24))+
+			(time.Hour*time.Duration(24)*time.Duration(4))+
+			(time.Hour*time.Duration(24)*time.Duration(2)), duration)
+}
+
+func TestStandardizeDurationString_ShouldParseStringWithSpaces(t *testing.T) {
+	result, err := StandardizeDurationString("1d 1h 20m")
+
+	assert.NoError(t, err)
+	assert.Equal(t, result, "24h1h20m")
 }
 
 func TestShouldTimeIntervalsMakeSense(t *testing.T) {