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<?php
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<?php
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/*
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/*
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 * OIDplus 2.0
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 * OIDplus 2.0
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 * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft
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 * Copyright 2019 - 2022 Daniel Marschall, ViaThinkSoft
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 *
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 * You may obtain a copy of the License at
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 *
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 *
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 * limitations under the License.
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 */
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 */
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// Note that there are no translations _L() because if we get an error at this
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// stage, then we have no language plugins anyways.
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function oidplus_get_missing_dependencies() {
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function oidplus_get_missing_dependencies() {
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        $missing_dependencies = array();
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        $missing_dependencies = array();
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        if (!extension_loaded('standard')) {
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        if (!extension_loaded('standard')) {
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                $missing_dependencies[] = 'standard';
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                $missing_dependencies[] = 'standard';
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                //                  includes/ipv6_functions.inc.php
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                //                  includes/ipv6_functions.inc.php
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                //                  plugins/viathinksoft/adminPages/400_oidinfo_export/oidinfo_api.inc.php (if GMP is not available, BC will be used)
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                //                  plugins/viathinksoft/adminPages/400_oidinfo_export/oidinfo_api.inc.php (if GMP is not available, BC will be used)
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                // Note that vendor/danielmarschall/php_utils/gmp_supplement.inc.php will implement the GMP functions if BCMath is present.
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                // Note that vendor/danielmarschall/php_utils/gmp_supplement.inc.php will implement the GMP functions if BCMath is present.
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                // This is the reason why we use function_exists('gmp_init') instead of extension_loaded('gmp')
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                // This is the reason why we use function_exists('gmp_init') instead of extension_loaded('gmp')
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                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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                        $install_hint1 = _L('On Windows, install it by enabling the line %1 in your PHP.ini',
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                        $install_hint1 = sprintf('On Windows, install it by enabling the line %s in your PHP.ini',
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                                'extension=php_gmp.dll');
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                                'extension=php_gmp.dll');
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                        $install_hint2 = _L('On Windows, it should be installed by default');
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                        $install_hint2 = sprintf('On Windows, it should be installed by default');
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                } else {
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                } else {
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                        $install_hint1 = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
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                        $install_hint1 = sprintf('On Linux, install it by running e.g. %s, and then restart your webserver service, e.g. by running %s',
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                                '<code>sudo apt-get update && sudo apt-get install php-gmp</code>',
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                                '<code>sudo apt-get update && sudo apt-get install php-gmp</code>',
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                                '<code>sudo service apache2 restart</code>');
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                                '<code>sudo service apache2 restart</code>');
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                        $install_hint2 = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
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                        $install_hint2 = sprintf('On Linux, install it by running e.g. %s, and then restart your webserver service, e.g. by running %s',
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                                '<code>sudo apt-get update && sudo apt-get install php-bcmath</code>',
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                                '<code>sudo apt-get update && sudo apt-get install php-bcmath</code>',
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                                '<code>sudo service apache2 restart</code>');
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                                '<code>sudo service apache2 restart</code>');
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                }
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                }
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                $missing_dependencies[] = 'GMP ('.$install_hint1.')'.
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                $missing_dependencies[] = 'GMP ('.$install_hint1.')'.
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                                          '<br>'._L('or alternatively').'<br>' .
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                                          '<br>'.sprintf('or alternatively').'<br>' .
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                                          'BCMath ('.$install_hint2.')';
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                                          'BCMath ('.$install_hint2.')';
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        }
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        }
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        if (!extension_loaded('mbstring') && !extension_loaded('iconv')) {
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        if (!extension_loaded('mbstring') && !extension_loaded('iconv')) {
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                // Required for includes/classes/OIDplusSessionHandler.class.php
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                // Required for includes/classes/OIDplusSessionHandler.class.php
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                //              vendor/n-other/php-sha3/src/Sha3.php
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                //              vendor/n-other/php-sha3/src/Sha3.php
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                //              includes/functions.inc.php (convert_to_utf8_no_bom)
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                //              includes/functions.inc.php (convert_to_utf8_no_bom)
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                // Note that vendor/symfony/polyfill-mbstring/ will always implement the MBString functions, but they only work if iconv is present.
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                // Note that vendor/symfony/polyfill-mbstring/ will always implement the MBString functions, but they only work if iconv is present.
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                // This is the reason why we use extension_loaded('mbstring') instead of function_exists('mb_substr')
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                // This is the reason why we use extension_loaded('mbstring') instead of function_exists('mb_substr')
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                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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                        $install_hint1 = _L('On Windows, install it by enabling the line %1 in your PHP.ini',
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                        $install_hint1 = sprintf('On Windows, install it by enabling the line %s in your PHP.ini',
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                                'extension=php_mbstring.dll');
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                                'extension=php_mbstring.dll');
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                        $install_hint2 = _L('On Windows, it should be installed by default');
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                        $install_hint2 = sprintf('On Windows, it should be installed by default');
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                } else {
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                } else {
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                        $install_hint1 = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
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                        $install_hint1 = sprintf('On Linux, install it by running e.g. %s, and then restart your webserver service, e.g. by running %s',
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                                '<code>sudo apt-get update && sudo apt-get install php-mbstring</code>',
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                                '<code>sudo apt-get update && sudo apt-get install php-mbstring</code>',
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                                '<code>sudo service apache2 restart</code>');
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                                '<code>sudo service apache2 restart</code>');
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                        $install_hint2 = _L('On Linux, it should be installed by default'); // Alpine Linux: apk add php-iconv
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                        $install_hint2 = sprintf('On Linux, it should be installed by default'); // Alpine Linux: apk add php-iconv
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                }
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                }
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                $missing_dependencies[] = 'MBString ('.$install_hint1.')'.
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                $missing_dependencies[] = 'MBString ('.$install_hint1.')'.
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                                          '<br>'._L('or alternatively').'<br>' .
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                                          '<br>'.sprintf('or alternatively').'<br>' .
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                                          'iconv ('.$install_hint2.')';
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                                          'iconv ('.$install_hint2.')';
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        }
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        }
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        if (!function_exists('simplexml_load_file')) {
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        if (!function_exists('simplexml_load_file')) {
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                // Required for includes/classes/OIDplusPluginManifest.class.php (Plugins)
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                // Required for includes/classes/OIDplusPluginManifest.class.php (Plugins)
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                //              includes/classes/OIDplus.class.php (Translation)
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                //              includes/classes/OIDplus.class.php (Translation)
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                //              plugins/viathinksoft/adminPages/400_oidinfo_export/OIDplusPageAdminOIDInfoExport.class.php (Import OID from oid-info.com)
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                //              plugins/viathinksoft/adminPages/400_oidinfo_export/OIDplusPageAdminOIDInfoExport.class.php (Import OID from oid-info.com)
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                //              dev/translation/*.phps (only for developers)
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                //              dev/translation/*.phps (only for developers)
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                // Note: This should not happen because of vendor/danielmarschall/php_utils/simplexml_supplement.inc.php
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                // Note: This should not happen because of vendor/danielmarschall/php_utils/simplexml_supplement.inc.php
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                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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                if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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                        $install_hint = _L('On Windows, it should be installed by default');
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                        $install_hint = sprintf('On Windows, it should be installed by default');
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                } else {
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                } else {
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                        $install_hint = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
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                        $install_hint = sprintf('On Linux, install it by running e.g. %s, and then restart your webserver service, e.g. by running %s',
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                                '<code>sudo apt-get update && sudo apt-get install php-xml</code>',
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                                '<code>sudo apt-get update && sudo apt-get install php-xml</code>',
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                                '<code>sudo service apache2 restart</code>');
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                                '<code>sudo service apache2 restart</code>');
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                }
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                }
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                $missing_dependencies[] = 'SimpleXML ('.$install_hint.')';
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                $missing_dependencies[] = 'SimpleXML ('.$install_hint.')';
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        }
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        }