Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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check_server_environment.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\install\module\requirements\task;
015
016 /**
017 * Installer task that checks if the server meats phpBB requirements
018 */
019 class check_server_environment extends \phpbb\install\task_base
020 {
021 /**
022 * @var \phpbb\install\helper\database
023 */
024 protected $database_helper;
025
026 /**
027 * @var \phpbb\install\helper\iohandler\iohandler_interface
028 */
029 protected $response_helper;
030
031 /**
032 * @var bool
033 */
034 protected $tests_passed;
035
036 /**
037 * Constructor
038 *
039 * @param \phpbb\install\helper\database $database_helper
040 * @param \phpbb\install\helper\iohandler\iohandler_interface $response
041 */
042 public function __construct(\phpbb\install\helper\database $database_helper,
043 \phpbb\install\helper\iohandler\iohandler_interface $response)
044 {
045 $this->database_helper = $database_helper;
046 $this->response_helper = $response;
047 $this->tests_passed = true;
048
049 parent::__construct(true);
050 }
051
052 /**
053 * {@inheritdoc}
054 */
055 public function run()
056 {
057 //
058 // Check requirements
059 // The error messages should be set in the check_ functions
060 //
061
062 // Check PHP version
063 $this->check_php_version();
064
065 // Check for getimagesize()
066 $this->check_image_size();
067
068 // Check for PCRE support
069 $this->check_pcre();
070
071 // Check for JSON support
072 $this->check_json();
073
074 // XML extension support check
075 $this->check_xml();
076
077 // Check for dbms support
078 $this->check_available_dbms();
079
080 return $this->tests_passed;
081 }
082
083 /**
084 * Sets $this->tests_passed
085 *
086 * @param bool $is_passed
087 */
088 protected function set_test_passed($is_passed)
089 {
090 // If one test failed, tests_passed should be false
091 $this->tests_passed = (!$this->tests_passed) ? false : $is_passed;
092 }
093
094 /**
095 * Check if the requirements for PHP version is met
096 */
097 protected function check_php_version()
098 {
099 $php_version = PHP_VERSION;
100
101 if (version_compare($php_version, '5.4') < 0)
102 {
103 $this->response_helper->add_error_message('PHP_VERSION_REQD', 'PHP_VERSION_REQD_EXPLAIN');
104
105 $this->set_test_passed(false);
106 return;
107 }
108
109 $this->set_test_passed(true);
110 }
111
112 /**
113 * Checks if the installed PHP has getimagesize() available
114 */
115 protected function check_image_size()
116 {
117 if (!@function_exists('getimagesize'))
118 {
119 $this->response_helper->add_error_message('PHP_GETIMAGESIZE_SUPPORT', 'PHP_GETIMAGESIZE_SUPPORT_EXPLAIN');
120
121 $this->set_test_passed(false);
122 return;
123 }
124
125 $this->set_test_passed(true);
126 }
127
128 /**
129 * Checks if the installed PHP supports PCRE
130 */
131 protected function check_pcre()
132 {
133 if (@preg_match('//u', ''))
134 {
135 $this->set_test_passed(true);
136 return;
137 }
138
139 $this->response_helper->add_error_message('PCRE_UTF_SUPPORT', 'PCRE_UTF_SUPPORT_EXPLAIN');
140
141 $this->set_test_passed(false);
142 }
143
144 /**
145 * Checks whether PHP's JSON extension is available or not
146 */
147 protected function check_json()
148 {
149 if (@extension_loaded('json'))
150 {
151 $this->set_test_passed(true);
152 return;
153 }
154
155 $this->response_helper->add_error_message('PHP_JSON_SUPPORT', 'PHP_JSON_SUPPORT_EXPLAIN');
156
157 $this->set_test_passed(false);
158 }
159
160 /**
161 * Checks whether or not the XML PHP extension is available (Required by the text formatter)
162 */
163 protected function check_xml()
164 {
165 if (class_exists('DOMDocument'))
166 {
167 $this->set_test_passed(true);
168 return;
169 }
170
171 $this->response_helper->add_error_message('PHP_XML_SUPPORT', 'PHP_XML_SUPPORT_EXPLAIN');
172
173 $this->set_test_passed(false);
174 }
175
176 /**
177 * Check if any supported DBMS is available
178 */
179 protected function check_available_dbms()
180 {
181 $available_dbms = $this->database_helper->get_available_dbms(false, true);
182
183 if ($available_dbms['ANY_DB_SUPPORT'])
184 {
185 $this->set_test_passed(true);
186 return;
187 }
188
189 $this->response_helper->add_error_message('PHP_SUPPORTED_DB', 'PHP_SUPPORTED_DB_EXPLAIN');
190
191 $this->set_test_passed(false);
192 }
193
194 /**
195 * {@inheritdoc}
196 */
197 static public function get_step_count()
198 {
199 return 0;
200 }
201
202 /**
203 * {@inheritdoc}
204 */
205 public function get_task_lang_name()
206 {
207 return '';
208 }
209 }
210