<?php

use ProcessMaker\Model\RbacAuthenticationSource;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use ProcessMaker\BusinessModel\User;
use ProcessMaker\Model\Department;
use ProcessMaker\Model\Groupwf;


/**
 * Class LdapAdvanced
 */
class LdapSource
{
    public $authSourceUid;
    public $ldapcnn = null;
    public $terminatedOu;

    private $arrayObjectClassFilter = [
        "user" => "|(objectclass=inetorgperson)(objectclass=organizationalperson)(objectclass=person)(objectclass=user)",
        "group" => "|(objectclass=posixgroup)(objectclass=group)(objectclass=groupofuniquenames)",
        "department" => "|(objectclass=organizationalunit)"
    ];
    private $arrayAttributes = [
        "ldap" => ["uid" => "uid", "member" => "memberuid"], //OpenLDAP
        "ad" => ["uid" => "samaccountname", "member" => "member"], //Active Directory
        "ds" => ["uid" => "uid", "member" => "uniquemember"] //389 DS
    ];

    private $arrayAttributesForUser = ["dn", "uid", "samaccountname", "givenname", "sn", "cn", "mail", "userprincipalname", "useraccountcontrol", "accountexpires", "manager"];

    public function ldapConnection($authSourceData) {
        $pass = explode('_', $authSourceData['AUTH_SOURCE_PASSWORD']);

        // Removing sensitive data
        $loggableAuthSource = $authSourceData;
        unset($loggableAuthSource['AUTH_SOURCE_PASSWORD']);

        foreach ($pass as $index => $value) {
            if ($value == '2NnV3ujj3w') {
                $authSourceData['AUTH_SOURCE_PASSWORD'] = G::decrypt($pass[0], $authSourceData['AUTH_SOURCE_SERVER_NAME']);
            }
        }

        $ldapcnn = ldap_connect($authSourceData['AUTH_SOURCE_SERVER_NAME'], $authSourceData['AUTH_SOURCE_PORT']);
        $this->stdLog($ldapcnn, 'ldap_connect', $loggableAuthSource);

        $ldapServer = $authSourceData['AUTH_SOURCE_SERVER_NAME'] . ':' . $authSourceData['AUTH_SOURCE_PORT'];

        ldap_set_option($ldapcnn, LDAP_OPT_PROTOCOL_VERSION, 3);
        $this->stdLog($ldapcnn, 'ldap_set_option', $loggableAuthSource);
        ldap_set_option($ldapcnn, LDAP_OPT_REFERRALS, 0);
        $this->stdLog($ldapcnn, 'ldap_set_option', $loggableAuthSource);

        $resultLDAPStartTLS = true;
        if (isset($authSourceData['AUTH_SOURCE_ENABLED_TLS']) && $authSourceData['AUTH_SOURCE_ENABLED_TLS']) {
            $resultLDAPStartTLS = @ldap_start_tls($ldapcnn);
            $this->stdLog($ldapcnn, 'ldap_start_tls', $loggableAuthSource);
            $ldapServer = 'TLS ' . $ldapServer;
        }

        if ($authSourceData['AUTH_ANONYMOUS'] == '1') {
            $bBind = ldap_bind($ldapcnn);
            $this->log($ldapcnn, 'bind $ldapServer like anonymous user');
        } else {
            $bBind = ldap_bind($ldapcnn, $authSourceData['AUTH_SOURCE_SEARCH_USER'], $authSourceData['AUTH_SOURCE_PASSWORD']);
            $this->log($ldapcnn, 'bind $ldapServer with user ' . $loggableAuthSource['AUTH_SOURCE_SEARCH_USER']);
        }
        $this->stdLog($ldapcnn, 'ldap_bind', $loggableAuthSource);
        $this->getDiagnosticMessage($ldapcnn);
        if (!$bBind) {
            $message = 'Unable to bind to server: ' . $ldapServer . 'LDAP-Errno: ' . ldap_errno($ldapcnn) . ' : ' . ldap_error($ldapcnn) . " \n";
            throw new Exception($message);
        }

        return ['connection' =>$ldapcnn, 'startTLS' => $resultLDAPStartTLS];
    }

    public function searchGroups() {
        try {
            $arrayGroup = [];

            $rbac = RBAC::getSingleton();

            if (is_null($rbac->authSourcesObj)) {
                $rbac->authSourcesObj = new AuthenticationSource();
            }

            $arrayAuthenticationSourceData = $rbac->authSourcesObj->load($this->authSourceUid);

            if (is_null($this->ldapcnn)) {
                $ldapcnn = $this->ldapConnection($arrayAuthenticationSourceData);
                $this->ldapcnn = $ldapcnn['connection'];
            }

            $ldapcnn = $this->ldapcnn;
            // Get Groups
            $limit = $this->getPageSizeLimitByData($arrayAuthenticationSourceData);
            $flagError = false;
            $filter = '(' . $this->arrayObjectClassFilter['group'] . ')';
            $this->log($ldapcnn, 'search groups with Filter: ' . $filter);

            $cookie = '';
            do {
                $searchResult = @ldap_search(
                    $ldapcnn,
                    $arrayAuthenticationSourceData['AUTH_SOURCE_BASE_DN'],
                    $filter,
                    ['dn', 'cn'],
                    0,
                    -1,
                    -1,
                    LDAP_DEREF_NEVER,
                    [['oid' => LDAP_CONTROL_PAGEDRESULTS, 'value' => ['size' => $limit, 'cookie' => $cookie]]]
                );
                ldap_parse_result($ldapcnn, $searchResult, $errcode, $matcheddn, $errmsg, $referrals, $controls);
                $this->stdLog($ldapcnn, "ldap_search", ["filter" => $filter, "attributes" => ['dn', 'cn']]);

                $context = [
                    "baseDN" => $arrayAuthenticationSourceData['AUTH_SOURCE_BASE_DN'],
                    "filter" => $filter,
                    "attributes" => ['dn', 'cn']
                ];
                $this->stdLog($ldapcnn, "ldap_search", $context);

                if ($error = ldap_errno($ldapcnn)) {
                    $this->log($ldapcnn, 'Error in Search');

                    $flagError = true;
                } else {
                    if ($searchResult) {
                        //Get groups from the ldap entries
                        $countEntries = ldap_count_entries($ldapcnn, $searchResult);
                        $this->stdLog($ldapcnn, "ldap_count_entries");

                        if ($countEntries > 0) {
                            $entry = ldap_first_entry($ldapcnn, $searchResult);
                            $this->stdLog($ldapcnn, "ldap_first_entry");

                            do {
                                $arrayEntryData = $this->ldapGetAttributes($ldapcnn, $entry);

                                if (isset($arrayEntryData['cn']) && !is_array($arrayEntryData['cn'])) {
                                    $arrayGroup[] = [
                                        'dn' => $arrayEntryData['dn'],
                                        'cn' => trim($arrayEntryData['cn']),
                                        'users' => 0,
                                    ];
                                }
                            } while ($entry = ldap_next_entry($ldapcnn, $entry));
                        }
                    }
                }

                if (!$flagError) {
                    if (isset($controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'])) {
                        // You need to pass the cookie from the last call to the next one
                        $cookie = $controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'];
                    } else {
                        $cookie = '';
                    }
                }
                // Empty cookie means last page
            } while (!empty($cookie) && !$flagError);

            $str = '';

            foreach ($arrayGroup as $group) {
                $str .= ' ' . $group['cn'];
            }

            $this->log($ldapcnn, 'found ' . count($arrayGroup) . ' groups: ' . $str);

            return $arrayGroup;
        } catch (Exception $e) {
            throw $e;
        }
    }

    public function searchDepartments() {
        try {
            $arrayDepartment = [];

            $filters = ['conditions' => ['AUTH_SOURCE_UID'=> $this->authSourceUid]];
            $rbacAuthenticationSource = new RbacAuthenticationSource();
            $authSourceReturn = $rbacAuthenticationSource->show($filters);
            $authenticationSourceData = $authSourceReturn['data'][0];

            if (is_null($this->ldapcnn)) {
                $ldapcnn = $this->ldapConnection($authenticationSourceData);
                $this->ldapcnn = $ldapcnn['connection'];
            }
            $this->terminatedOu = $attributes['AUTH_SOURCE_RETIRED_OU'] ?? '';
            $ldapcnn = $this->ldapcnn;

            //Get Departments
            $limit = $this->getPageSizeLimitByData($authenticationSourceData);
            $flagError = false;
            $filter = '(' . $this->arrayObjectClassFilter['department'] . ')';
            $this->log($ldapcnn, 'search Departments with Filter: ' . $filter);
            $unitsBase = $this->custom_ldap_explode_dn($authenticationSourceData['AUTH_SOURCE_BASE_DN']);

            $cookie = '';
            do {
                $searchResult = @ldap_search(
                    $ldapcnn,
                    $authenticationSourceData['AUTH_SOURCE_BASE_DN'],
                    $filter,
                    ['dn', 'ou'],
                    0,
                    -1,
                    -1,
                    LDAP_DEREF_NEVER,
                    [['oid' => LDAP_CONTROL_PAGEDRESULTS, 'value' => ['size' => $limit, 'cookie' => $cookie]]]
                );
                ldap_parse_result($ldapcnn, $searchResult, $errcode, $matcheddn, $errmsg, $referrals, $controls);
                $this->stdLog($ldapcnn, "ldap_search", ["filter" => $filter, "attributes" => ['dn', 'ou']]);

                $context = [
                    "baseDN" => $authenticationSourceData['AUTH_SOURCE_BASE_DN'],
                    "filter" => $filter,
                    "attributes" => ['dn', 'ou']
                ];
                $this->stdLog($ldapcnn, "ldap_search", $context);

                if ($error = ldap_errno($ldapcnn)) {
                    $this->log($ldapcnn, 'Error in Search');

                    $flagError = true;
                } else {
                    if ($searchResult) {
                        //The first node is root
                        if (empty($arrayDepartment)) {
                            $arrayDepartment[] = [
                                'dn' => $authenticationSourceData['AUTH_SOURCE_BASE_DN'],
                                'parent' => '',
                                'ou' => 'ROOT',
                                'users' => 0
                            ];
                        }

                        //Get departments from the ldap entries
                        if (ldap_count_entries($ldapcnn, $searchResult) > 0) {
                            $this->stdLog($ldapcnn, "ldap_count_entries");
                            $entry = ldap_first_entry($ldapcnn, $searchResult);
                            $this->stdLog($ldapcnn, "ldap_first_entry", $context);

                            do {
                                $arrayEntryData = $this->ldapGetAttributes($ldapcnn, $entry);
                                $unitsEqual = $this->custom_ldap_explode_dn($arrayEntryData['dn']);

                                if (count($unitsEqual) == 1 && $unitsEqual[0] == '') {
                                    continue;
                                }

                                if (count($unitsEqual) > count($unitsBase)) {
                                    unset($unitsEqual[0]);
                                }

                                if (isset($arrayEntryData['ou']) && !is_array($arrayEntryData['ou'])) {
                                    $arrayDepartment[] = [
                                        'dn' => $arrayEntryData['dn'],
                                        'parent' => (isset($unitsEqual[1])) ? implode(',', $unitsEqual) : '',
                                        'ou' => trim($arrayEntryData['ou']),
                                        'users' => 0
                                    ];
                                }
                            } while ($entry = ldap_next_entry($ldapcnn, $entry));
                        }
                    }
                }

                if (!$flagError) {
                    if (isset($controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'])) {
                        // You need to pass the cookie from the last call to the next one
                        $cookie = $controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'];
                    } else {
                        $cookie = '';
                    }
                }
                // Empty cookie means last page
            } while (!empty($cookie) && !$flagError);

            $str = '';

            foreach ($arrayDepartment as $dep) {
                $str .= ' ' . $dep['ou'];
            }

            $this->log($ldapcnn, 'found ' . count($arrayDepartment) . ' departments: ' . $str);

            return $arrayDepartment;
        } catch (Exception $e) {
            throw $e;
        }
    }

    public function getPageSizeLimit($ldapcnn, $baseDn = '')
    {
        try {
            $limit = 1000;

            if ($ldapcnn === false) {
                return $limit;
            }

            $searchResult = @ldap_search($ldapcnn, $baseDn, '(|(objectclass=*))', ['dn']);
            $context = [
                'baseDN' => $baseDn,
                'filter' => '(|(objectclass=*))',
                'attributes' => ['dn']
            ];
            $this->stdLog($ldapcnn, 'ldap_search', $context);

            if ($searchResult) {
                $countEntries = ldap_count_entries($ldapcnn, $searchResult);
                $this->stdLog($ldapcnn, 'ldap_count_entries');

                if ($countEntries > 0) {
                    $limit = ($countEntries > $limit) ? $limit : $countEntries;
                }
            }

            return $limit;
        } catch (Exception $e) {
            throw $e;
        }
    }

    private function getDiagnosticMessage($linkIdentifier)
    {
        //specific message
        $keysError = [
            [
                'key' => 'USER_NOT_FOUND',
                'code' => 525,
                'message' => G::LoadTranslation('ID_LDAP_USER_NOT_FOUND_INVALID'),
            ], [
                'key' => 'NOT_PERMITTED_TO_LOGON_AT_THIS_TIME',
                'code' => 530,
                'message' => G::LoadTranslation('ID_LDAP_NOT_PERMITTED_TO_LOGON_AT_THIS_TIME'),
            ], [
                'key' => 'RESTRICTED_TO_SPECIFIC_MACHINES',
                'code' => 531,
                'message' => G::LoadTranslation('ID_LDAP_RESTRICTED_TO_SPECIFIC_MACHINES'),
            ], [
                'key' => 'PASSWORD_EXPIRED',
                'code' => 532,
                'message' => G::LoadTranslation('ID_LDAP_PASSWORD_EXPIRED'),
            ], [
                'key' => 'ACCOUNT_DISABLED',
                'code' => 533,
                'message' => G::LoadTranslation('ID_LDAP_ACCOUNT_DISABLED'),
            ], [
                'key' => 'ACCOUNT_EXPIRED',
                'code' => 701,
                'message' => G::LoadTranslation('ID_LDAP_ACCOUNT_EXPIRED'),
            ], [
                'key' => 'USER_MUST_RESET_PASSWORD',
                'code' => 773,
                'message' => G::LoadTranslation('ID_LDAP_USER_MUST_RESET_PASSWORD'),
            ]
        ];
        $message = '';
        ldap_get_option($linkIdentifier, LDAP_OPT_DIAGNOSTIC_MESSAGE, $messageError);
        $this->stdLog($linkIdentifier, 'ldap_get_option', ['error' => $messageError]);
        foreach ($keysError as $key => $value) {
            if (strpos($messageError, (string) $value['code']) !== false) {
                $message = $value['message'];
                break;
            }
        }
        //standard message
        if (empty($message)) {
            $errorNumber = ldap_errno($linkIdentifier);
            $message = ldap_err2str($errorNumber) . '.';
        }
        if (empty($message)) {
            $message = G::LoadTranslation('ID_LDAP_ERROR_CONNECTION');
        }
        Cache::put('ldapMessageError', $message, 120); //laravel 8.x the time parameter is in seconds.
        $this->log($linkIdentifier, $messageError);
    }

    private function log($link, $text)
    {
        $logFile = PATH_DATA . 'logs/ldap.log';

        if (!file_exists($logFile)) {
            file_put_contents($logFile, "Start\n");
            @chmod($logFile, 0644);
        }

        if (!is_writable($logFile)) {
            error_log('Log file is not writable: ' . $logFile);
            throw new Exception('Log file is not writable: ' . $logFile);
        }

        $fpt = fopen($logFile, 'a');
        $ldapErrorMsg = '';
        $ldapErrorNr = 0;

        if ($link != null) {
            $ldapErrorNr = ldap_errno($link);

            if ($ldapErrorNr != 0) {
                $ldapErrorMsg = ldap_error($link);
                $text = $ldapErrorMsg . ' : ' . $text;
            }
        }

        // Log format: date hour ipaddress workspace ldapErrorNr
        fwrite($fpt, sprintf("%s %s %s %s %s \n", date('Y-m-d H:i:s'), getenv('REMOTE_ADDR'), config('system.workspace'), $ldapErrorNr, $text));
        fclose($fpt);
    }

    private function stdLog($link, $message = "", $context = [], $level = "info")
    {
        try {
            if (empty($link)) {
                switch ($level) {
                    case "error":
                        Log::channel(':ldapAdvanced')->error($message, Bootstrap::context($context));
                        break;
                    case "info":
                    default:
                        Log::channel(':ldapAdvanced')->info($message, Bootstrap::context($context));
                        break;
                }
                return;
            }
            $code = ldap_errno($link);
            $detail = ldap_err2str($code);
            $context["detail"] = $detail;
            if ($code === 0) {
                Log::channel(':ldapAdvanced')->info($message, Bootstrap::context($context));
            } else {
                Log::channel(':ldapAdvanced')->error($message, Bootstrap::context($context));
            }
        } catch (Exception $exception) {
            return ['success' => false, 'message' => $exception->getMessage()];
        }
    }

    
    public function searchUsersLdap($keyword, $start = null, $limit = null) {
        $arrayUser = [];
        $totalUser = 0;
        $countUser = 0;

        $paged = !is_null($start) && !is_null($limit);

        $filters = [
            'conditions' => ['AUTH_SOURCE_UID' => $this->authSourceUid],
        ];
        $rbacAuthenticationSource = new RbacAuthenticationSource();
        $authSourceReturn = $rbacAuthenticationSource->show($filters);
        $arrayAuthenticationSourceData = $authSourceReturn['data'][0];
        $arrayAuthenticationSourceData['AUTH_SOURCE_DATA'] = json_decode($arrayAuthenticationSourceData['AUTH_SOURCE_DATA'], true);

        $attributeUserSet = [];
        $attributeSetAdd = [];

        if (
            isset($arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_GRID_ATTRIBUTE']) && !empty($arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_GRID_ATTRIBUTE'])
        ) {
            foreach ($arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_GRID_ATTRIBUTE'] as $value) {
                $attributeSetAdd[] = $value['attributeLdap'];
                $attributeUserSet[$value['attributeUser']] = $value['attributeLdap'];
            }
        }

        $ldapcnn = $this->ldapConnection($arrayAuthenticationSourceData);
        $ldapcnn = $ldapcnn['connection'];

        //Get Users
        if (!isset($arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_USERS_FILTER'])) {
            $arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_USERS_FILTER'] = '';
        }

        $uidUserIdentifier = (isset($arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_IDENTIFIER_FOR_USER'])) ? $arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_IDENTIFIER_FOR_USER'] : 'uid';
        $filterUsers = trim($arrayAuthenticationSourceData['AUTH_SOURCE_DATA']['AUTH_SOURCE_USERS_FILTER']);
        $filter = ($filterUsers != '') ? $filterUsers : '(' . $this->arrayObjectClassFilter['user'] . ')';
        $filter = "(&$filter(|(dn=$keyword)(uid=$keyword)(samaccountname=$keyword)(givenname=$keyword)(sn=$keyword)(cn=$keyword)(mail=$keyword)(userprincipalname=$keyword)))";
        $oSearch = @ldap_search($ldapcnn, $arrayAuthenticationSourceData['AUTH_SOURCE_BASE_DN'], $filter, array_merge($this->arrayAttributesForUser, $attributeSetAdd));
        $context = [
            'baseDN' => $arrayAuthenticationSourceData['AUTH_SOURCE_BASE_DN'],
            'filter' => $filter,
            'attribute' => array_merge($this->arrayAttributesForUser, $attributeSetAdd)
        ];
        $this->stdLog($ldapcnn, 'ldap_search', $context);

        if ($oError = ldap_errno($ldapcnn)) {
            $this->log($ldapcnn, 'Error in Search users');
        } else {
            if ($oSearch) {
                $entries = ldap_count_entries($ldapcnn, $oSearch);
                $this->stdLog($ldapcnn, 'ldap_count_entries');
                $totalUser = $entries;

                if ($entries > 0) {
                    $oEntry = ldap_first_entry($ldapcnn, $oSearch);
                    $this->stdLog($ldapcnn, 'ldap_first_entry');
                    $countEntries = 0;
                    $flagNextRecord = true;

                    do {
                        $aAttr = $this->ldapGetAttributes($ldapcnn, $oEntry);
                        $sUsername = (isset($aAttr[$uidUserIdentifier])) ? $aAttr[$uidUserIdentifier] : '';

                        if ((is_array($sUsername) && !empty($sUsername)) || trim($sUsername) != '') {
                            $countUser++;

                            /* Active Directory userAccountControl Values
                              Normal Day to Day Values:
                              512 - Enable Account
                              514 - Disable account
                              544 - Account Enabled - Require user to change password at first logon
                              4096 - Workstation/server
                              66048 - Enabled, password never expires
                              66050 - Disabled, password never expires
                              262656 - Smart Card Logon Required
                              532480 - Domain controller
                              1 - script
                              2 - accountdisable
                              8 - homedir_required
                              16 - lockout
                              32 - passwd_notreqd
                              64 - passwd_cant_change
                              128 - encrypted_text_pwd_allowed
                              256 - temp_duplicate_account
                              512 - normal_account
                              2048 - interdomain_trust_account
                              4096 - workstation_trust_account
                              8192 - server_trust_account
                              65536 - dont_expire_password
                              131072 - mns_logon_account
                              262144 - smartcard_required
                              524288 - trusted_for_delegation
                              1048576 - not_delegated
                              2097152 - use_des_key_only
                              4194304 - dont_req_preauth
                              8388608 - password_expired
                              16777216 - trusted_to_auth_for_delegation
                             */
                            $userCountControl = '';
                            //Active Directory, openLdap
                            if (isset($aAttr['useraccountcontrol'])) {
                                switch ($aAttr['useraccountcontrol']) {
                                    case '512':
                                    case '544':
                                    case '66048':
                                    case '66080':
                                        $userCountControl = 'ACTIVE';
                                        break;
                                    case '514':
                                    case '546':
                                    case '66050':
                                    case '66082':
                                    case '2':
                                    case '16':
                                    case '8388608':
                                    default:
                                        $userCountControl = 'INACTIVE';
                                        break;
                                }
                            }
                            //apache ldap
                            if (isset($aAttr['status'])) {
                                $userCountControl = strtoupper($aAttr['status']);
                            }
                            $aUserAttributes = [];
                            foreach ($attributeUserSet as $key => $value) {
                                if ($key == 'USR_STATUS') {
                                    $aUserAttributes[$key] = ($userCountControl != '') ? $userCountControl : 'ACTIVE';
                                } elseif (isset($aAttr[$value])) {
                                    $aUserAttributes[$key] = $aAttr[$value];
                                }
                            }

                            if ($paged) {
                                if ($countUser - 1 <= $start + $limit - 1) {
                                    if ($start <= $countUser - 1) {
                                        $arrayUser[] = array_merge($this->getUserDataFromAttribute($sUsername, $aAttr), $aUserAttributes);
                                    }
                                } else {
                                    $flagNextRecord = false;
                                }
                            } else {
                                $arrayUser[] = array_merge($this->getUserDataFromAttribute($sUsername, $aAttr), $aUserAttributes);
                            }

                            $countEntries++;
                        }
                    } while (($oEntry = ldap_next_entry($ldapcnn, $oEntry)) && $flagNextRecord);
                }
            }
        }

        return ($paged) ? ['numRecTotal' => $totalUser, 'data' => $arrayUser] : $arrayUser;
    }

    private function getUserDataFromAttribute($username, array $arrayAttributes)
    {
        try {
            $keyMail = (isset($arrayAttributes['mail'])) ? 'mail' : ((isset($arrayAttributes['userprincipalname'])) ? 'userprincipalname' : 'nomail');

            return [
                'sUsername' => trim((is_array($username)) ? $username[0] : $username),
                'sPassword' => trim((isset($arrayAttributes['userpassword'])) ? ((is_array($arrayAttributes['userpassword'])) ? $arrayAttributes['userpassword'][0] : $arrayAttributes['userpassword']) : ''),
                'sFullname' => trim((isset($arrayAttributes['cn'])) ? ((is_array($arrayAttributes['cn'])) ? $arrayAttributes['cn'][0] : $arrayAttributes['cn']) : ''),
                'sFirstname' => trim((isset($arrayAttributes['givenname'])) ? ((is_array($arrayAttributes['givenname'])) ? $arrayAttributes['givenname'][0] : $arrayAttributes['givenname']) : ''),
                'sLastname' => trim((isset($arrayAttributes['sn'])) ? ((is_array($arrayAttributes['sn'])) ? $arrayAttributes['sn'][0] : $arrayAttributes['sn']) : ''),
                'sEmail' => trim((isset($arrayAttributes[$keyMail])) ? ((is_array($arrayAttributes[$keyMail])) ? $arrayAttributes[$keyMail][0] : $arrayAttributes[$keyMail]) : ''),
                'sDN' => trim($arrayAttributes['dn']),
                'sManagerDN' => trim((isset($arrayAttributes['manager'])) ? ((is_array($arrayAttributes['manager'])) ? $arrayAttributes['manager'][0] : $arrayAttributes['manager']) : '')
            ];
        } catch (Exception $e) {
            throw $e;
        }
    }

    private function getPageSizeLimitByData(array $arrayAuthSourceData)
    {
        if (isset($arrayAuthSourceData['AUTH_SOURCE_DATA']['LDAP_PAGE_SIZE_LIMIT'])) {
            return $arrayAuthSourceData['AUTH_SOURCE_DATA']['LDAP_PAGE_SIZE_LIMIT'];
        } else {
            return $this->getPageSizeLimit(false);
        }
    }

    private function ldapGetAttributes($ldapcnn, $entry)
    {
        try {
            $arrayAttributes = [];

            $arrayAttributes['dn'] = ldap_get_dn($ldapcnn, $entry);
            $this->stdLog($ldapcnn, 'ldap_get_dn');

            $arrayAux = ldap_get_attributes($ldapcnn, $entry);
            $this->stdLog($ldapcnn, 'ldap_get_attributes');

            for ($i = 0; $i <= $arrayAux['count'] - 1; $i++) {
                $key = strtolower($arrayAux[$i]);

                switch ($arrayAux[$arrayAux[$i]]['count']) {
                    case 0:
                        $arrayAttributes[$key] = '';
                        break;
                    case 1:
                        $arrayAttributes[$key] = $arrayAux[$arrayAux[$i]][0];
                        break;
                    default:
                        $arrayAttributes[$key] = $arrayAux[$arrayAux[$i]];

                        unset($arrayAttributes[$key]['count']);
                        break;
                }
            }

            if (!isset($arrayAttributes['mail']) && isset($arrayAttributes['userprincipalname'])) {
                $arrayAttributes['mail'] = $arrayAttributes['userprincipalname'];
            }

            return $arrayAttributes;
        } catch (Exception $e) {
            throw $e;
        }
    }

    public function custom_ldap_explode_dn($dn)
    {
        $dn = trim($dn, ',');
        $result = ldap_explode_dn($dn, 0);
        $this->stdLog(null, "ldap_explode_dn", ["dn" => $dn]);

        if (is_array($result)) {
            unset($result['count']);

            foreach ($result as $key => $value) {
                $result[$key] = addcslashes(preg_replace_callback("/\\\([0-9A-Fa-f]{2})/", function ($m) {
                    return chr(hexdec($m[1]));
                }, $value), '<>,"');
            }
        }

        return $result;
    }
}