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  1. <?php
  2.  
  3. /*
  4.  * OIDplus 2.0
  5.  * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft
  6.  *
  7.  * Licensed under the Apache License, Version 2.0 (the "License");
  8.  * you may not use this file except in compliance with the License.
  9.  * You may obtain a copy of the License at
  10.  *
  11.  *     http://www.apache.org/licenses/LICENSE-2.0
  12.  *
  13.  * Unless required by applicable law or agreed to in writing, software
  14.  * distributed under the License is distributed on an "AS IS" BASIS,
  15.  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16.  * See the License for the specific language governing permissions and
  17.  * limitations under the License.
  18.  */
  19.  
  20. function oidplus_get_missing_dependencies() {
  21.         $missing_dependencies = array();
  22.  
  23.         if (!extension_loaded('standard')) {
  24.                 $missing_dependencies[] = 'standard';
  25.         }
  26.  
  27.         if (!extension_loaded('Core')) {
  28.                 $missing_dependencies[] = 'Core';
  29.         }
  30.  
  31.         if (!extension_loaded('SPL')) {
  32.                 $missing_dependencies[] = 'SPL';
  33.         }
  34.  
  35.         if (!extension_loaded('session')) {
  36.                 // Alpine Linux: apk add php-session
  37.                 $missing_dependencies[] = 'session';
  38.         }
  39.  
  40.         if (!extension_loaded('json')) {
  41.                 $missing_dependencies[] = 'json';
  42.         }
  43.  
  44.         if (!extension_loaded('date')) {
  45.                 $missing_dependencies[] = 'date';
  46.         }
  47.  
  48.         if (!extension_loaded('filter')) {
  49.                 $missing_dependencies[] = 'filter';
  50.         }
  51.  
  52.         if (!extension_loaded('hash')) {
  53.                 $missing_dependencies[] = 'hash';
  54.         }
  55.  
  56.         if (!extension_loaded('pcre')) {
  57.                 $missing_dependencies[] = 'pcre';
  58.         }
  59.  
  60.         if (!function_exists('gmp_init')) {
  61.                 // GMP Required for includes/uuid_functions.inc.php
  62.                 //                  includes/ipv6_functions.inc.php
  63.                 //                  plugins/viathinksoft/adminPages/400_oidinfo_export/oidinfo_api.inc.php (if GMP is not available, BC will be used)
  64.                 // Note that vendor/danielmarschall/php_utils/gmp_supplement.inc.php will implement the GMP functions if BCMath is present.
  65.                 // This is the reason why we use function_exists('gmp_init') instead of extension_loaded('gmp')
  66.                 if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
  67.                         $install_hint1 = _L('On Windows, install it by enabling the line %1 in your PHP.ini',
  68.                                 'extension=php_gmp.dll');
  69.                         $install_hint2 = _L('On Windows, it should be installed by default');
  70.                 } else {
  71.                         $install_hint1 = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
  72.                                 '<code>sudo apt-get update && sudo apt-get install php-gmp</code>',
  73.                                 '<code>sudo service apache2 restart</code>');
  74.                         $install_hint2 = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
  75.                                 '<code>sudo apt-get update && sudo apt-get install php-bcmath</code>',
  76.                                 '<code>sudo service apache2 restart</code>');
  77.                 }
  78.                 $missing_dependencies[] = 'GMP ('.$install_hint1.')'.
  79.                                           '<br>'._L('or alternatively').'<br>' .
  80.                                           'BCMath ('.$install_hint2.')';
  81.         }
  82.  
  83.         if (!extension_loaded('mbstring') && !extension_loaded('iconv')) {
  84.                 // Required for includes/classes/OIDplusSessionHandler.class.php
  85.                 //              includes/oid_utils.inc.php
  86.                 //              vendor/matthiasmullie/path-converter/src/Converter.php
  87.                 //              vendor/n-other/php-sha3/src/Sha3.php
  88.                 //              includes/functions.inc.php (convert_to_utf8_no_bom)
  89.                 // Note that vendor/symfony/polyfill-mbstring/ will always implement the MBString functions, but they only work if iconv is present.
  90.                 // This is the reason why we use extension_loaded('mbstring') instead of function_exists('mb_substr')
  91.                 if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
  92.                         $install_hint1 = _L('On Windows, install it by enabling the line %1 in your PHP.ini',
  93.                                 'extension=php_mbstring.dll');
  94.                         $install_hint2 = _L('On Windows, it should be installed by default');
  95.                 } else {
  96.                         $install_hint1 = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
  97.                                 '<code>sudo apt-get update && sudo apt-get install php-mbstring</code>',
  98.                                 '<code>sudo service apache2 restart</code>');
  99.                         $install_hint2 = _L('On Linux, it should be installed by default'); // Alpine Linux: apk add php-iconv
  100.                 }
  101.                 $missing_dependencies[] = 'MBString ('.$install_hint1.')'.
  102.                                           '<br>'._L('or alternatively').'<br>' .
  103.                                           'iconv ('.$install_hint2.')';
  104.         }
  105.  
  106.         if (!function_exists('simplexml_load_file')) {
  107.                 // Required for includes/classes/OIDplusPluginManifest.class.php (Plugins)
  108.                 //              includes/classes/OIDplus.class.php (Translation)
  109.                 //              plugins/viathinksoft/adminPages/400_oidinfo_export/OIDplusPageAdminOIDInfoExport.class.php (Import OID from oid-info.com)
  110.                 //              dev/translation/*.phps (only for developers)
  111.                 // Note: This should not happen because of vendor/danielmarschall/php_utils/simplexml_supplement.inc.php
  112.                 if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
  113.                         $install_hint = _L('On Windows, it should be installed by default');
  114.                 } else {
  115.                         $install_hint = _L('On Linux, install it by running e.g. %1, and then restart your webserver service, e.g. by running %2',
  116.                                 '<code>sudo apt-get update && sudo apt-get install php-xml</code>',
  117.                                 '<code>sudo service apache2 restart</code>');
  118.                 }
  119.                 $missing_dependencies[] = 'SimpleXML ('.$install_hint.')';
  120.         }
  121.  
  122.         return $missing_dependencies;
  123. }
  124.