feat: add configurable search filter

internal/ldap/ldap.go

@@ -41,7 +41,7 @@ func (l *LDAP) Search(username string) (string, error) {
 	searchRequest := ldapgo.NewSearchRequest(
 		l.BaseDN,
 		ldapgo.ScopeWholeSubtree, ldapgo.NeverDerefAliases, 0, 0, false,
-		fmt.Sprintf("(uid=%s)", username),
+		fmt.Sprintf(l.Config.SearchFilter, username),
 		[]string{"dn"},
 		nil,
 	)

internal/types/config.go

@@ -41,6 +41,7 @@ type Config struct {
 	LdapBindPassword        string `mapstructure:"ldap-bind-password"`
 	LdapBaseDN              string `mapstructure:"ldap-base-dn"`
 	LdapInsecure            bool   `mapstructure:"ldap-insecure"`
+	LdapSearchFilter        string `mapstructure:"ldap-search-filter"`
 }
 
 // Server configuration
@@ -135,4 +136,5 @@ type LdapConfig struct {
 	BindPassword string
 	BaseDN       string
 	Insecure     bool
+	SearchFilter string
 }