Make pwdLastSet stuff more generic and not require parsing the timestamp

Signed-off-by: Margo Crawford <margaretc@vmware.com>

internal/controller/supervisorconfig/activedirectoryupstreamwatcher/active_directory_upstream_watcher.go

@@ -318,7 +318,7 @@ func (c *activeDirectoryWatcherController) validateUpstream(ctx context.Context,
 		Dialer:                       c.ldapDialer,
 		UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 		RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-			upstreamldap.PwdLastSetAttribute:                 upstreamldap.PwdUnchangedSinceLogin,
+			upstreamldap.PwdLastSetAttribute:                 upstreamldap.AttributeUnchangedSinceLogin(upstreamldap.PwdLastSetAttribute),
 			upstreamldap.UserAccountControlAttribute:         upstreamldap.ValidUserAccountControl,
 			upstreamldap.UserAccountControlComputedAttribute: upstreamldap.ValidComputedUserAccountControl,
 		},

internal/controller/supervisorconfig/activedirectoryupstreamwatcher/active_directory_upstream_watcher_test.go

@@ -222,7 +222,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 		},
 		UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 		RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-			"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+			"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 			"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 			"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 		},
@@ -543,7 +543,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -604,7 +604,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -668,7 +668,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -732,7 +732,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -795,7 +795,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -929,7 +929,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -1058,7 +1058,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					}},
@@ -1113,7 +1113,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -1318,7 +1318,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					UIDAttributeParsingOverrides:   map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					GroupAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"sAMAccountName": upstreamldap.GroupSAMAccountNameWithDomainSuffix},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -1375,7 +1375,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -1436,7 +1436,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -1491,7 +1491,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},
@@ -1692,7 +1692,7 @@ func TestActiveDirectoryUpstreamWatcherControllerSync(t *testing.T) {
 					},
 					UIDAttributeParsingOverrides: map[string]func(*ldap.Entry) (string, error){"objectGUID": upstreamldap.MicrosoftUUIDFromBinary("objectGUID")},
 					RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
-						"pwdLastSet":                         upstreamldap.PwdUnchangedSinceLogin,
+						"pwdLastSet":                         upstreamldap.AttributeUnchangedSinceLogin("pwdLastSet"),
 						"userAccountControl":                 upstreamldap.ValidUserAccountControl,
 						"msDS-User-Account-Control-Computed": upstreamldap.ValidComputedUserAccountControl,
 					},

internal/fositestorage/authorizationcode/authorizationcode.go

@@ -348,20 +348,47 @@ const ExpectedAuthorizeCodeSessionJSONFromFuzzing = `{
 					"upstreamRefreshToken": "嵽痊w©Ź榨Q|ôɵt毇妬"
 				},
 				"ldap": {
-					"userDN": "6鉢緋uƴŤȱʀļÂ?墖\u003cƬb獭潜Ʃ饾"
+					"userDN": "6鉢緋uƴŤȱʀļÂ?墖\u003cƬb獭潜Ʃ饾",
+					"extraRefreshAttributes": {
+						"ĝ": [
+							"IȽ齤士bEǎ",
+							"跞@)¿,ɭS隑ip偶宾儮猷V麹"
+						],
+						"齁š%OpKȱ藚ɏ¬Ê蒭堜]ȗ韚ʫ": [
+							"aŚB碠k9帴ʘ赱ŕ瑹xȢ~1Į",
+							"睋邔\u0026Ű惫蜀Ģ¡圔鎥墀jMʥ",
+							"+î艔垎0"
+						]
+					}
 				},
 				"activedirectory": {
-					"userDN": "|鬌R蜚蠣麹概÷驣7Ʀ澉1æɽ誮rʨ鷞"
+					"userDN": "ȝƋ鬯犦獢9c5¤.岵",
+					"extraRefreshAttributes": {
+						"\u0026錝D肁Ŷɽ蔒PR}Ųʓ": [
+							"_º$+溪ŸȢŒų崓ļ"
+						],
+						"P姧骦:駝重Eȫ": [
+							"ɂ/",
+							"Ƀɫ囤",
+							"鉌X縆跣ŠɞɮƎ賿礣©硇"
+						],
+						"a齙\\蹼偦歛ơ": [
+							"y衑拁Ȃ縅",
+							"Vƅȭǝ*擦28Dž ",
+							"ã置bņ抰蛖"
+						]
+					}
 				}
 			}
 		},
 		"requestedAudience": [
-			"ŚB碠k9"
+			"õC嶃",
+			"ɣƜ/気ū齢q萮左/篣AÚƄŕ~čfV",
+			"x荃墎]ac["
 		],
 		"grantedAudience": [
-			"ʘ赱",
+			"XôĖ给溬d鞕",
-			"ď逳鞪?3)藵睋邔\u0026Ű惫蜀Ģ¡圔",
+			"腿tʏƲ%}ſ¯Ɣ 籌Tǘ乚Ȥ2Ķě"
-			"墀jMʥ"
 		]
 	},
 	"version": "2"

internal/fositestorage/authorizationcode/authorizationcode_test.go

@@ -396,6 +396,7 @@ func TestFuzzAndJSONNewValidEmptyAuthorizeCodeSession(t *testing.T) {
 	// while the fuzzer will panic if AuthorizeRequest changes in a way that cannot be fuzzed,
 	// if it adds a new field that can be fuzzed, this check will fail
 	// thus if AuthorizeRequest changes, we will detect it here (though we could possibly miss an omitempty field)
+	t.Log(authorizeCodeSessionJSONFromFuzzing)
 	require.JSONEq(t, ExpectedAuthorizeCodeSessionJSONFromFuzzing, authorizeCodeSessionJSONFromFuzzing)
 }
 

internal/oidc/auth/auth_handler.go

@@ -123,11 +123,13 @@ func handleAuthRequestForLDAPUpstream(
 	if idpType == psession.ProviderTypeLDAP {
 		customSessionData.LDAP = &psession.LDAPSessionData{
 			UserDN:                 dn,
+			ExtraRefreshAttributes: authenticateResponse.User.GetExtra(),
 		}
 	}
 	if idpType == psession.ProviderTypeActiveDirectory {
 		customSessionData.ActiveDirectory = &psession.ActiveDirectorySessionData{
 			UserDN:                 dn,
+			ExtraRefreshAttributes: authenticateResponse.User.GetExtra(),
 		}
 	}
 

internal/oidc/auth/auth_handler_test.go

@@ -283,6 +283,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
 					Name:   happyLDAPUsernameFromAuthenticator,
 					UID:    happyLDAPUID,
 					Groups: happyLDAPGroups,
+					Extra:  map[string][]string{"some-refresh-attribute": {"some-refresh-attribute-value"}},
 				},
 				DN: happyLDAPUserDN,
 			}, true, nil
@@ -443,6 +444,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
 		LDAP:         nil,
 		ActiveDirectory: &psession.ActiveDirectorySessionData{
 			UserDN:                 happyLDAPUserDN,
+			ExtraRefreshAttributes: map[string][]string{"some-refresh-attribute": {"some-refresh-attribute-value"}},
 		},
 	}
 
@@ -453,6 +455,7 @@ func TestAuthorizationEndpoint(t *testing.T) {
 		OIDC:         nil,
 		LDAP: &psession.LDAPSessionData{
 			UserDN:                 happyLDAPUserDN,
+			ExtraRefreshAttributes: map[string][]string{"some-refresh-attribute": {"some-refresh-attribute-value"}},
 		},
 		ActiveDirectory: nil,
 	}

internal/oidc/provider/dynamic_upstream_idp_provider.go

@@ -102,6 +102,7 @@ type StoredRefreshAttributes struct {
 	Subject              string
 	DN                   string
 	AuthTime             time.Time
+	AdditionalAttributes map[string][]string
 }
 
 type DynamicUpstreamIDPProvider interface {

internal/oidc/token/token_handler.go

@@ -180,6 +180,13 @@ func upstreamLDAPRefresh(ctx context.Context, providerCache oidc.UpstreamIdentit
 		return errorsx.WithStack(errMissingUpstreamSessionInternalError)
 	}
 
+	var additionalAttributes map[string][]string
+	if s.ProviderType == psession.ProviderTypeLDAP {
+		additionalAttributes = s.LDAP.ExtraRefreshAttributes
+	} else {
+		additionalAttributes = s.ActiveDirectory.ExtraRefreshAttributes
+	}
+
 	// get ldap/ad provider out of cache
 	p, dn, err := findLDAPProviderByNameAndValidateUID(s, providerCache)
 	if err != nil {
@@ -194,6 +201,7 @@ func upstreamLDAPRefresh(ctx context.Context, providerCache oidc.UpstreamIdentit
 		Subject:              subject,
 		DN:                   dn,
 		AuthTime:             session.IDTokenClaims().AuthTime,
+		AdditionalAttributes: additionalAttributes,
 	})
 	if err != nil {
 		return errorsx.WithStack(errUpstreamRefreshError.WithHint(

internal/psession/pinniped_session.go

@@ -67,11 +67,13 @@ type OIDCSessionData struct {
 // LDAPSessionData is the additional data needed by Pinniped when the upstream IDP is an LDAP provider.
 type LDAPSessionData struct {
 	UserDN                 string              `json:"userDN"`
+	ExtraRefreshAttributes map[string][]string `json:"extraRefreshAttributes,omitempty"`
 }
 
 // ActiveDirectorySessionData is the additional data needed by Pinniped when the upstream IDP is an Active Directory provider.
 type ActiveDirectorySessionData struct {
 	UserDN                 string              `json:"userDN"`
+	ExtraRefreshAttributes map[string][]string `json:"extraRefreshAttributes,omitempty"`
 }
 
 // NewPinnipedSession returns a new empty session.

internal/upstreamldap/upstreamldap.go

@@ -593,6 +593,15 @@ func (p *Provider) searchAndBindUser(conn Conn, username string, bindFunc func(c
 	}
 	sort.Strings(mappedGroupNames)
 
+	mappedRefreshAttributes := make(map[string][]string)
+	for k := range p.c.RefreshAttributeChecks {
+		mappedVal, err := p.getSearchResultAttributeValue(k, userEntry, username)
+		if err != nil {
+			return nil, err
+		}
+		mappedRefreshAttributes[k] = []string{mappedVal}
+	}
+
 	// Caution: Note that any other LDAP commands after this bind will be run as this user instead of as the configured BindUsername!
 	err = bindFunc(conn, userEntry.DN)
 	if err != nil {
@@ -615,6 +624,7 @@ func (p *Provider) searchAndBindUser(conn Conn, username string, bindFunc func(c
 			Name:   mappedUsername,
 			UID:    mappedUID,
 			Groups: mappedGroupNames,
+			Extra:  mappedRefreshAttributes,
 		},
 		DN: userEntry.DN,
 	}
@@ -676,7 +686,7 @@ func (p *Provider) refreshUserSearchRequest(dn string) *ldap.SearchRequest {
 		TimeLimit:    90,
 		TypesOnly:    false,
 		Filter:       "(objectClass=*)", // we already have the dn, so the filter doesn't matter
-		Attributes:   p.refreshAttributes(),
+		Attributes:   p.userSearchRequestedAttributes(),
 		Controls:     nil, // this could be used to enable paging, but we're already limiting the result max size
 	}
 }
@@ -689,6 +699,9 @@ func (p *Provider) userSearchRequestedAttributes() []string {
 	if p.c.UserSearch.UIDAttribute != distinguishedNameAttributeName {
 		attributes = append(attributes, p.c.UserSearch.UIDAttribute)
 	}
+	for k := range p.c.RefreshAttributeChecks {
+		attributes = append(attributes, k)
+	}
 	return attributes
 }
 
@@ -703,14 +716,6 @@ func (p *Provider) groupSearchRequestedAttributes() []string {
 	}
 }
 
-func (p *Provider) refreshAttributes() []string {
-	attributes := p.userSearchRequestedAttributes()
-	for k := range p.c.RefreshAttributeChecks {
-		attributes = append(attributes, k)
-	}
-	return attributes
-}
-
 func (p *Provider) userSearchFilter(username string) string {
 	safeUsername := p.escapeUsernameForSearchFilter(username)
 	if len(p.c.UserSearch.Filter) == 0 {
@@ -869,43 +874,22 @@ func getDomainFromDistinguishedName(distinguishedName string) (string, error) {
 	return strings.Join(domainComponents[1:], "."), nil
 }
 
-func PwdUnchangedSinceLogin(entry *ldap.Entry, attributes provider.StoredRefreshAttributes) error {
+func AttributeUnchangedSinceLogin(attribute string) func(*ldap.Entry, provider.StoredRefreshAttributes) error {
-	authTime := attributes.AuthTime
+	return func(entry *ldap.Entry, storedAttributes provider.StoredRefreshAttributes) error {
-	pwdLastSetWin32Format := entry.GetAttributeValues(PwdLastSetAttribute)
+		prevAttributeValues := storedAttributes.AdditionalAttributes[attribute]
-	if len(pwdLastSetWin32Format) != 1 {
+		newValues := entry.GetAttributeValues(attribute)
-		return fmt.Errorf("expected to find 1 value for %s attribute, but found %d", PwdLastSetAttribute, len(pwdLastSetWin32Format))
-	}
-	// convert to a time.Time
-	pwdLastSetParsed, err := win32timestampToTime(pwdLastSetWin32Format[0])
-	if err != nil {
-		return err
-	}
 
-	// if pwdLastSet > authTime, that means that the password has been changed since the initial login.
+		if len(newValues) != 1 {
-	// return an error so the user is prompted to log in again.
+			return fmt.Errorf(`expected to find 1 value for "%s" attribute, but found %d`, attribute, len(newValues))
-	if pwdLastSetParsed.After(authTime) {
+		}
-		return fmt.Errorf("password has changed since login. login time: %s, password set time: %s", authTime, pwdLastSetParsed)
+		if len(prevAttributeValues) != 1 {
+			return fmt.Errorf(`expected to find 1 stored value for "%s" attribute, but found %d`, attribute, len(prevAttributeValues))
+		}
+		if prevAttributeValues[0] != newValues[0] {
+			return fmt.Errorf(`value for attribute "%s" has changed since initial value at login. Previous value: "%s", new value: "%s"`, attribute, prevAttributeValues[0], newValues[0])
 		}
 		return nil
 	}
-
-func win32timestampToTime(win32timestamp string) (time.Time, error) {
-	// take a win32 timestamp (represented as the number of 100 ns intervals since
-	// January 1, 1601) and make a time.Time
-
-	const unixTimeBaseAsWin = 116_444_736_000_000_000 // The unix base time (January 1, 1970 UTC) as 100 ns since Win32 epoch (1601-01-01)
-	const hundredNsToSecFactor = 10_000_000
-
-	win32Time, err := strconv.ParseInt(win32timestamp, 10, 64)
-	if err != nil {
-		return time.Time{}, fmt.Errorf("couldn't parse as timestamp")
-	}
-
-	unixsec := (win32Time - unixTimeBaseAsWin) / hundredNsToSecFactor
-	unixns := (win32Time % hundredNsToSecFactor) * 100
-
-	convertedTime := time.Unix(unixsec, unixns).UTC()
-	return convertedTime, nil
 }
 
 func ValidUserAccountControl(entry *ldap.Entry, _ provider.StoredRefreshAttributes) error {

internal/upstreamldap/upstreamldap_test.go

@@ -160,6 +160,7 @@ func TestEndUserAuthentication(t *testing.T) {
 			Name:   testUserSearchResultUsernameAttributeValue,
 			UID:    base64.RawURLEncoding.EncodeToString([]byte(testUserSearchResultUIDAttributeValue)),
 			Groups: []string{testGroupSearchResultGroupNameAttributeValue1, testGroupSearchResultGroupNameAttributeValue2},
+			Extra:  map[string][]string{},
 		}
 		if editFunc != nil {
 			editFunc(u)
@@ -507,6 +508,7 @@ func TestEndUserAuthentication(t *testing.T) {
 					Name:   testUserSearchResultUsernameAttributeValue,
 					UID:    base64.RawURLEncoding.EncodeToString([]byte(testUserSearchResultUIDAttributeValue)),
 					Groups: []string{"a", "b", "c"},
+					Extra:  map[string][]string{},
 				},
 				DN: testUserSearchResultDNValue,
 			},
@@ -610,6 +612,66 @@ func TestEndUserAuthentication(t *testing.T) {
 				r.Groups = []string{"Animals@activedirectory.mycompany.example.com", "Mammals@activedirectory.mycompany.example.com"}
 			}),
 		},
+		{
+			name:     "requesting additional refresh related attributes",
+			username: testUpstreamUsername,
+			password: testUpstreamPassword,
+			providerConfig: providerConfig(func(p *ProviderConfig) {
+				p.RefreshAttributeChecks = map[string]func(entry *ldap.Entry, attributes provider.StoredRefreshAttributes) error{
+					"some-attribute-to-check-during-refresh": func(entry *ldap.Entry, attributes provider.StoredRefreshAttributes) error {
+						return nil
+					},
+				}
+			}),
+			searchMocks: func(conn *mockldapconn.MockConn) {
+				conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
+				conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
+					r.Attributes = append(r.Attributes, "some-attribute-to-check-during-refresh")
+				})).Return(&ldap.SearchResult{
+					Entries: []*ldap.Entry{
+						{
+							DN: testUserSearchResultDNValue,
+							Attributes: []*ldap.EntryAttribute{
+								ldap.NewEntryAttribute(testUserSearchUsernameAttribute, []string{testUserSearchResultUsernameAttributeValue}),
+								ldap.NewEntryAttribute(testUserSearchUIDAttribute, []string{testUserSearchResultUIDAttributeValue}),
+								ldap.NewEntryAttribute("some-attribute-to-check-during-refresh", []string{"some-attribute-value"}),
+							},
+						},
+					},
+				}, nil).Times(1)
+				conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
+					Return(exampleGroupSearchResult, nil).Times(1)
+				conn.EXPECT().Close().Times(1)
+			},
+			bindEndUserMocks: func(conn *mockldapconn.MockConn) {
+				conn.EXPECT().Bind(testUserSearchResultDNValue, testUpstreamPassword).Times(1)
+			},
+			wantAuthResponse: expectedAuthResponse(func(r *user.DefaultInfo) {
+				r.Extra = map[string][]string{"some-attribute-to-check-during-refresh": {"some-attribute-value"}}
+			}),
+		},
+		{
+			name:     "requesting additional refresh related attributes, but they aren't returned",
+			username: testUpstreamUsername,
+			password: testUpstreamPassword,
+			providerConfig: providerConfig(func(p *ProviderConfig) {
+				p.RefreshAttributeChecks = map[string]func(entry *ldap.Entry, attributes provider.StoredRefreshAttributes) error{
+					"some-attribute-to-check-during-refresh": func(entry *ldap.Entry, attributes provider.StoredRefreshAttributes) error {
+						return nil
+					},
+				}
+			}),
+			searchMocks: func(conn *mockldapconn.MockConn) {
+				conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
+				conn.EXPECT().Search(expectedUserSearch(func(r *ldap.SearchRequest) {
+					r.Attributes = append(r.Attributes, "some-attribute-to-check-during-refresh")
+				})).Return(exampleUserSearchResult, nil).Times(1)
+				conn.EXPECT().SearchWithPaging(expectedGroupSearch(nil), expectedGroupSearchPageSize).
+					Return(exampleGroupSearchResult, nil).Times(1)
+				conn.EXPECT().Close().Times(1)
+			},
+			wantError: "found 0 values for attribute \"some-attribute-to-check-during-refresh\" while searching for user \"some-upstream-username\", but expected 1 result",
+		},
 		{
 			name:     "override group parsing when domain can't be determined from dn",
 			username: testUpstreamUsername,
@@ -1265,7 +1327,9 @@ func TestUpstreamRefresh(t *testing.T) {
 			UIDAttribute:      testUserSearchUIDAttribute,
 			UsernameAttribute: testUserSearchUsernameAttribute,
 		},
-		RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{pwdLastSetAttribute: PwdUnchangedSinceLogin},
+		RefreshAttributeChecks: map[string]func(*ldap.Entry, provider.StoredRefreshAttributes) error{
+			pwdLastSetAttribute: AttributeUnchangedSinceLogin(pwdLastSetAttribute),
+		},
 	}
 
 	tests := []struct {
@@ -1520,7 +1584,7 @@ func TestUpstreamRefresh(t *testing.T) {
 			wantErr: "found 2 values for attribute \"some-upstream-uid-attribute\" while searching for user \"some-upstream-user-dn\", but expected 1 result",
 		},
 		{
-			name:           "search result has a recent pwdLastSet value",
+			name:           "search result has a changed pwdLastSet value",
 			providerConfig: providerConfig,
 			setupMocks: func(conn *mockldapconn.MockConn) {
 				conn.EXPECT().Bind(testBindUsername, testBindPassword).Times(1)
@@ -1539,7 +1603,7 @@ func TestUpstreamRefresh(t *testing.T) {
 								},
 								{
 									Name:   pwdLastSetAttribute,
-									Values: []string{"132803468800000000"},
+									Values: []string{"132801740800000001"},
 								},
 							},
 						},
@@ -1547,7 +1611,7 @@ func TestUpstreamRefresh(t *testing.T) {
 				}, nil).Times(1)
 				conn.EXPECT().Close().Times(1)
 			},
-			wantErr: "validation for attribute \"pwdLastSet\" failed during upstream refresh: password has changed since login. login time: 2021-11-01 23:43:19 +0000 UTC, password set time: 2021-11-02 17:14:40 +0000 UTC",
+			wantErr: "validation for attribute \"pwdLastSet\" failed during upstream refresh: value for attribute \"pwdLastSet\" has changed since initial value at login. Previous value: \"132801740800000000\", new value: \"132801740800000001\"",
 		},
 	}
 
@@ -1581,6 +1645,7 @@ func TestUpstreamRefresh(t *testing.T) {
 				Subject:              subject,
 				DN:                   testUserSearchResultDNValue,
 				AuthTime:             authTime,
+				AdditionalAttributes: map[string][]string{pwdLastSetAttribute: {"132801740800000000"}},
 			})
 			if tt.wantErr != "" {
 				require.Error(t, err)
@@ -1960,148 +2025,67 @@ func TestGetDomainFromDistinguishedName(t *testing.T) {
 	}
 }
 
-func TestPwdUnchangedSinceLogin(t *testing.T) {
+func TestAttributeUnchangedSinceLogin(t *testing.T) {
-	authTime := "2021-11-01T23:43:19.826433579Z" // this is the format that fosite automatically stores
+	initialVal := "some-attribute-value"
-	authTimeParsed, err := time.Parse(time.RFC3339Nano, authTime)
+	changedVal := "some-different-attribute-value"
-	require.NoError(t, err)
+	attributeName := "some-attribute-name"
-	pwdResetTimeAfterAuthTime := "132803468800000000"  // Nov 2
-	pwdResetTimeBeforeAuthTime := "132801740800000000" // Oct 31
 	tests := []struct {
 		name       string
-		authTime   *time.Time
 		entry      *ldap.Entry
 		wantResult bool
 		wantErr    string
 	}{
 		{
-			name:     "happy path where password has not been reset since login",
+			name: "happy path where value has not changed since login",
-			authTime: &authTimeParsed,
 			entry: &ldap.Entry{
 				DN: "some-dn",
 				Attributes: []*ldap.EntryAttribute{
 					{
-						Name:   "pwdLastSet",
+						Name:   attributeName,
-						Values: []string{pwdResetTimeBeforeAuthTime},
+						Values: []string{initialVal},
 					},
 				},
 			},
 		},
 		{
 			name: "password has been reset since login",
-			authTime: &authTimeParsed,
 			entry: &ldap.Entry{
 				DN: "some-dn",
 				Attributes: []*ldap.EntryAttribute{
 					{
-						Name:   "pwdLastSet",
+						Name:   attributeName,
-						Values: []string{pwdResetTimeAfterAuthTime},
+						Values: []string{changedVal},
 					},
 				},
 			},
-			wantErr: "password has changed since login. login time: 2021-11-01 23:43:19.826433579 +0000 UTC, password set time: 2021-11-02 17:14:40 +0000 UTC",
+			wantErr: "value for attribute \"some-attribute-name\" has changed since initial value at login. Previous value: \"some-attribute-value\", new value: \"some-different-attribute-value\"",
 		},
 		{
-			name:     "ldap timestamp is in the wrong format",
+			name: "no value for attribute attribute",
-			authTime: &authTimeParsed,
-			entry: &ldap.Entry{
-				DN: "some-dn",
-				Attributes: []*ldap.EntryAttribute{
-					{
-						Name:   "pwdLastSet",
-						Values: []string{"invalid"},
-					},
-				},
-			},
-			wantErr: "couldn't parse as timestamp",
-		},
-		{
-			name:     "no value for pwdLastSet attribute",
-			authTime: &authTimeParsed,
 			entry: &ldap.Entry{
 				DN:         "some-dn",
 				Attributes: []*ldap.EntryAttribute{},
 			},
-			wantErr: "expected to find 1 value for pwdLastSet attribute, but found 0",
+			wantErr: "expected to find 1 value for \"some-attribute-name\" attribute, but found 0",
 		},
 		{
-			name:     "too many values for pwdLastSet attribute",
+			name: "too many values for attribute",
-			authTime: &authTimeParsed,
 			entry: &ldap.Entry{
 				DN: "some-dn",
 				Attributes: []*ldap.EntryAttribute{
 					{
-						Name:   "pwdLastSet",
+						Name:   attributeName,
 						Values: []string{"val1", "val2"},
 					},
 				},
 			},
-			wantErr: "expected to find 1 value for pwdLastSet attribute, but found 2",
+			wantErr: "expected to find 1 value for \"some-attribute-name\" attribute, but found 2",
 		},
 	}
 	for _, test := range tests {
 		tt := test
 		t.Run(tt.name, func(t *testing.T) {
-			err := PwdUnchangedSinceLogin(tt.entry, provider.StoredRefreshAttributes{AuthTime: *tt.authTime})
+			err := AttributeUnchangedSinceLogin(attributeName)(tt.entry, provider.StoredRefreshAttributes{AdditionalAttributes: map[string][]string{attributeName: {initialVal}}})
-			if tt.wantErr != "" {
-				require.Error(t, err)
-				require.Equal(t, tt.wantErr, err.Error())
-			} else {
-				require.NoError(t, err)
-			}
-		})
-	}
-}
-
-func TestWin32TimestampToTime(t *testing.T) {
-	happyPasswordChangeTime := time.Date(2021, time.January, 2, 0, 12, 21, 0, time.UTC).UTC()
-	tests := []struct {
-		name            string
-		timestampString string
-		wantTime        time.Time
-		wantErr         string
-	}{
-		{
-			name:            "happy case with a valid timestamp",
-			timestampString: "132540199410000000",
-			wantTime:        happyPasswordChangeTime,
-		},
-		{
-			name:            "handles error with a string thats not a timestamp",
-			timestampString: "not timestamp",
-			wantErr:         "couldn't parse as timestamp",
-		},
-		{
-			name:            "handles error with too big of a timestamp",
-			timestampString: "132540199410000000000",
-			wantErr:         "couldn't parse as timestamp",
-		},
-		{
-			name:            "timestamp of zero",
-			timestampString: "0",
-			wantTime:        time.Date(1601, time.January, 1, 0, 0, 0, 0, time.UTC).UTC(),
-		},
-		{
-			name:            "fractional seconds",
-			timestampString: "132540199410000001",
-			wantTime:        time.Date(2021, time.January, 2, 0, 12, 21, 100, time.UTC).UTC(),
-		},
-		{
-			name:            "max allowable value",
-			timestampString: "9223372036854775807", // 2^63-1
-			wantTime:        time.Date(30828, time.September, 14, 2, 48, 5, 477580700, time.UTC).UTC(),
-		},
-		{
-			name:            "just past max allowable value",
-			timestampString: "9223372036854775808", // 2^63
-			wantErr:         "couldn't parse as timestamp",
-		},
-	}
-
-	for _, test := range tests {
-		tt := test
-		t.Run(tt.name, func(t *testing.T) {
-			actualTime, err := win32timestampToTime(tt.timestampString)
-			require.Equal(t, tt.wantTime, actualTime)
 			if tt.wantErr != "" {
 				require.Error(t, err)
 				require.Equal(t, tt.wantErr, err.Error())