| 1 | <?php |
| 2 | |
| 3 | namespace Civi\Install; |
| 4 | |
| 5 | /** |
| 6 | * Class Requirements |
| 7 | * @package Civi\Install |
| 8 | */ |
| 9 | class Requirements { |
| 10 | |
| 11 | /** |
| 12 | * Requirement severity -- Requirement successfully met. |
| 13 | */ |
| 14 | const REQUIREMENT_OK = 0; |
| 15 | |
| 16 | /** |
| 17 | * Requirement severity -- Warning condition; proceed but flag warning. |
| 18 | */ |
| 19 | const REQUIREMENT_WARNING = 1; |
| 20 | |
| 21 | /** |
| 22 | * Requirement severity -- Error condition; abort installation. |
| 23 | */ |
| 24 | const REQUIREMENT_ERROR = 2; |
| 25 | |
| 26 | protected $system_checks = array( |
| 27 | 'checkMemory', |
| 28 | 'checkServerVariables', |
| 29 | 'checkMysqlConnectExists', |
| 30 | 'checkJsonEncodeExists', |
| 31 | ); |
| 32 | |
| 33 | protected $database_checks = array( |
| 34 | 'checkMysqlConnection', |
| 35 | 'checkMysqlVersion', |
| 36 | 'checkMysqlInnodb', |
| 37 | 'checkMysqlTempTables', |
| 38 | 'checkMySQLAutoIncrementIncrementOne', |
| 39 | 'checkMysqlTrigger', |
| 40 | 'checkMysqlThreadStack', |
| 41 | 'checkMysqlLockTables', |
| 42 | ); |
| 43 | |
| 44 | /** |
| 45 | * Run all requirements tests. |
| 46 | * |
| 47 | * @param array $config |
| 48 | * An array with two keys: |
| 49 | * - file_paths |
| 50 | * - db_config |
| 51 | * |
| 52 | * @return array |
| 53 | * An array of check summaries. Each array contains the keys 'title', 'severity', and 'details'. |
| 54 | */ |
| 55 | public function checkAll(array $config) { |
| 56 | return array_merge($this->checkSystem($config['file_paths']), $this->checkDatabase($config['db_config'])); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Check system requirements are met, such as sufficient memory, |
| 61 | * necessary file paths are writable and required php extensions |
| 62 | * are available. |
| 63 | * |
| 64 | * @param array $file_paths |
| 65 | * An array of file paths that will be checked to confirm they |
| 66 | * are writable. |
| 67 | * |
| 68 | * @return array |
| 69 | */ |
| 70 | public function checkSystem(array $file_paths) { |
| 71 | $errors = array(); |
| 72 | |
| 73 | $errors[] = $this->checkFilepathIsWritable($file_paths); |
| 74 | foreach ($this->system_checks as $check) { |
| 75 | $errors[] = $this->$check(); |
| 76 | } |
| 77 | |
| 78 | return $errors; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Check database connection, database version and other |
| 83 | * database requirements are met. |
| 84 | * |
| 85 | * @param array $db_config |
| 86 | * An array with keys: |
| 87 | * - host (with optional port specified eg. localhost:12345) |
| 88 | * - database (name of database to select) |
| 89 | * - username |
| 90 | * - password |
| 91 | * |
| 92 | * @return array |
| 93 | */ |
| 94 | public function checkDatabase(array $db_config) { |
| 95 | $errors = array(); |
| 96 | |
| 97 | foreach ($this->database_checks as $check) { |
| 98 | $errors[] = $this->$check($db_config); |
| 99 | } |
| 100 | |
| 101 | return $errors; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Check configured php Memory. |
| 106 | * @return array |
| 107 | */ |
| 108 | public function checkMemory() { |
| 109 | $min = 1024 * 1024 * 32; |
| 110 | $recommended = 1024 * 1024 * 64; |
| 111 | |
| 112 | $mem = $this->getPHPMemory(); |
| 113 | $mem_string = ini_get('memory_limit'); |
| 114 | |
| 115 | $results = array( |
| 116 | 'title' => 'CiviCRM memory check', |
| 117 | 'severity' => $this::REQUIREMENT_OK, |
| 118 | 'details' => "You have $mem_string allocated (minimum 32Mb, recommended 64Mb)", |
| 119 | ); |
| 120 | |
| 121 | if ($mem < $min && $mem > 0) { |
| 122 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 123 | } |
| 124 | elseif ($mem < $recommended && $mem != 0) { |
| 125 | $results['severity'] = $this::REQUIREMENT_WARNING; |
| 126 | } |
| 127 | elseif ($mem == 0) { |
| 128 | $results['details'] = "Cannot determine PHP memory allocation. Install only if you're sure you've allocated at least 32 MB."; |
| 129 | $results['severity'] = $this::REQUIREMENT_WARNING; |
| 130 | } |
| 131 | |
| 132 | return $results; |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Get Configured PHP memory. |
| 137 | * @return float |
| 138 | */ |
| 139 | protected function getPHPMemory() { |
| 140 | $memString = ini_get("memory_limit"); |
| 141 | |
| 142 | switch (strtolower(substr($memString, -1))) { |
| 143 | case "k": |
| 144 | return round(substr($memString, 0, -1) * 1024); |
| 145 | |
| 146 | case "m": |
| 147 | return round(substr($memString, 0, -1) * 1024 * 1024); |
| 148 | |
| 149 | case "g": |
| 150 | return round(substr($memString, 0, -1) * 1024 * 1024 * 1024); |
| 151 | |
| 152 | default: |
| 153 | return round($memString); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * @return array |
| 159 | */ |
| 160 | public function checkServerVariables() { |
| 161 | $results = array( |
| 162 | 'title' => 'CiviCRM PHP server variables', |
| 163 | 'severity' => $this::REQUIREMENT_OK, |
| 164 | 'details' => 'The required $_SERVER variables are set', |
| 165 | ); |
| 166 | |
| 167 | $required_variables = array('SCRIPT_NAME', 'HTTP_HOST', 'SCRIPT_FILENAME'); |
| 168 | $missing = array(); |
| 169 | |
| 170 | foreach ($required_variables as $required_variable) { |
| 171 | if (empty($_SERVER[$required_variable])) { |
| 172 | $missing[] = '$_SERVER[' . $required_variable . ']'; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | if ($missing) { |
| 177 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 178 | $results['details'] = 'The following PHP variables are not set: ' . implode(', ', $missing); |
| 179 | } |
| 180 | |
| 181 | return $results; |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * @return array |
| 186 | */ |
| 187 | public function checkJsonEncodeExists() { |
| 188 | $results = array( |
| 189 | 'title' => 'CiviCRM JSON encoding support', |
| 190 | 'severity' => $this::REQUIREMENT_OK, |
| 191 | 'details' => 'Function json_encode() found', |
| 192 | ); |
| 193 | if (!function_exists('json_encode')) { |
| 194 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 195 | $results['details'] = 'Function json_encode() does not exist'; |
| 196 | } |
| 197 | |
| 198 | return $results; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @return array |
| 203 | */ |
| 204 | public function checkMysqlConnectExists() { |
| 205 | $results = array( |
| 206 | 'title' => 'CiviCRM MySQL check', |
| 207 | 'severity' => $this::REQUIREMENT_OK, |
| 208 | 'details' => 'Function mysql_connect() found', |
| 209 | ); |
| 210 | if (!function_exists('mysql_connect')) { |
| 211 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 212 | $results['details'] = 'Function mysql_connect() does not exist'; |
| 213 | } |
| 214 | |
| 215 | return $results; |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * @param array $db_config |
| 220 | * |
| 221 | * @return array |
| 222 | */ |
| 223 | public function checkMysqlConnection(array $db_config) { |
| 224 | $results = array( |
| 225 | 'title' => 'CiviCRM MySQL connection', |
| 226 | 'severity' => $this::REQUIREMENT_OK, |
| 227 | 'details' => "Connected", |
| 228 | ); |
| 229 | |
| 230 | $conn = @mysql_connect($db_config['host'], $db_config['username'], $db_config['password']); |
| 231 | |
| 232 | if (!$conn) { |
| 233 | $results['details'] = mysql_error(); |
| 234 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 235 | return $results; |
| 236 | } |
| 237 | |
| 238 | if (!@mysql_select_db($db_config['database'], $conn)) { |
| 239 | $results['details'] = mysql_error(); |
| 240 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 241 | return $results; |
| 242 | } |
| 243 | |
| 244 | return $results; |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * @param array $db_config |
| 249 | * |
| 250 | * @return array |
| 251 | */ |
| 252 | public function checkMysqlVersion(array $db_config) { |
| 253 | $min = '5.1'; |
| 254 | $results = array( |
| 255 | 'title' => 'CiviCRM MySQL Version', |
| 256 | 'severity' => $this::REQUIREMENT_OK, |
| 257 | ); |
| 258 | |
| 259 | $conn = @mysql_connect($db_config['host'], $db_config['username'], $db_config['password']); |
| 260 | if (!$conn || !($info = mysql_get_server_info($conn))) { |
| 261 | $results['severity'] = $this::REQUIREMENT_WARNING; |
| 262 | $results['details'] = "Cannot determine the version of MySQL installed. Please ensure at least version {$min} is installed."; |
| 263 | return $results; |
| 264 | } |
| 265 | |
| 266 | if (version_compare($info, $min) == -1) { |
| 267 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 268 | $results['details'] = "MySQL version is {$info}; minimum required is {$min}"; |
| 269 | return $results; |
| 270 | } |
| 271 | |
| 272 | $results['details'] = "MySQL version is {$info}"; |
| 273 | return $results; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * @param array $db_config |
| 278 | * |
| 279 | * @return array |
| 280 | */ |
| 281 | public function checkMysqlInnodb(array $db_config) { |
| 282 | $results = array( |
| 283 | 'title' => 'CiviCRM InnoDB support', |
| 284 | 'severity' => $this::REQUIREMENT_ERROR, |
| 285 | 'details' => 'Could not determine if MySQL has InnoDB support. Assuming none.', |
| 286 | ); |
| 287 | |
| 288 | $conn = @mysql_connect($db_config['host'], $db_config['username'], $db_config['password']); |
| 289 | if (!$conn) { |
| 290 | return $results; |
| 291 | } |
| 292 | |
| 293 | $innodb_support = FALSE; |
| 294 | $result = mysql_query("SHOW ENGINES", $conn); |
| 295 | while ($values = mysql_fetch_array($result)) { |
| 296 | if ($values['Engine'] == 'InnoDB') { |
| 297 | if (strtolower($values['Support']) == 'yes' || strtolower($values['Support']) == 'default') { |
| 298 | $innodb_support = TRUE; |
| 299 | break; |
| 300 | } |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | if ($innodb_support) { |
| 305 | $results['severity'] = $this::REQUIREMENT_OK; |
| 306 | $results['details'] = 'MySQL supports InnoDB'; |
| 307 | } |
| 308 | return $results; |
| 309 | } |
| 310 | |
| 311 | /** |
| 312 | * @param array $db_config |
| 313 | * |
| 314 | * @return array |
| 315 | */ |
| 316 | public function checkMysqlTempTables(array $db_config) { |
| 317 | $results = array( |
| 318 | 'title' => 'CiviCRM MySQL Temp Tables', |
| 319 | 'severity' => $this::REQUIREMENT_OK, |
| 320 | 'details' => 'MySQL server supports temporary tables', |
| 321 | ); |
| 322 | |
| 323 | $conn = @mysql_connect($db_config['host'], $db_config['username'], $db_config['password']); |
| 324 | if (!$conn) { |
| 325 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 326 | $results['details'] = "Could not connect to database"; |
| 327 | return $results; |
| 328 | } |
| 329 | |
| 330 | if (!@mysql_select_db($db_config['database'], $conn)) { |
| 331 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 332 | $results['details'] = "Could not select the database"; |
| 333 | return $results; |
| 334 | } |
| 335 | |
| 336 | $r = mysql_query('CREATE TEMPORARY TABLE civicrm_install_temp_table_test (test text)', $conn); |
| 337 | if (!$r) { |
| 338 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 339 | $results['details'] = "Database does not support creation of temporary tables"; |
| 340 | return $results; |
| 341 | } |
| 342 | |
| 343 | mysql_query('DROP TEMPORARY TABLE civicrm_install_temp_table_test'); |
| 344 | return $results; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * @param $db_config |
| 349 | * |
| 350 | * @return array |
| 351 | */ |
| 352 | public function checkMysqlTrigger($db_config) { |
| 353 | $results = array( |
| 354 | 'title' => 'CiviCRM MySQL Trigger', |
| 355 | 'severity' => $this::REQUIREMENT_OK, |
| 356 | 'details' => 'Database supports MySQL triggers', |
| 357 | ); |
| 358 | |
| 359 | $conn = @mysql_connect($db_config['host'], $db_config['username'], $db_config['password']); |
| 360 | if (!$conn) { |
| 361 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 362 | $results['details'] = 'Could not connect to database'; |
| 363 | return $results; |
| 364 | } |
| 365 | |
| 366 | if (!@mysql_select_db($db_config['database'], $conn)) { |
| 367 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 368 | $results['details'] = "Could not select the database"; |
| 369 | return $results; |
| 370 | } |
| 371 | |
| 372 | $r = mysql_query('CREATE TABLE civicrm_install_temp_table_test (test text)', $conn); |
| 373 | if (!$r) { |
| 374 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 375 | $results['details'] = 'Could not create a table to run test'; |
| 376 | return $results; |
| 377 | } |
| 378 | |
| 379 | $r = mysql_query('CREATE TRIGGER civicrm_install_temp_table_test_trigger BEFORE INSERT ON civicrm_install_temp_table_test FOR EACH ROW BEGIN END'); |
| 380 | if (!$r) { |
| 381 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 382 | $results['details'] = 'Database does not support creation of triggers'; |
| 383 | } |
| 384 | else { |
| 385 | mysql_query('DROP TRIGGER civicrm_install_temp_table_test_trigger'); |
| 386 | } |
| 387 | |
| 388 | mysql_query('DROP TABLE civicrm_install_temp_table_test'); |
| 389 | return $results; |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * @param array $db_config |
| 394 | * |
| 395 | * @return array |
| 396 | */ |
| 397 | public function checkMySQLAutoIncrementIncrementOne(array $db_config) { |
| 398 | $results = array( |
| 399 | 'title' => 'CiviCRM MySQL AutoIncrementIncrement', |
| 400 | 'severity' => $this::REQUIREMENT_OK, |
| 401 | 'details' => 'MySQL server auto_increment_increment is 1', |
| 402 | ); |
| 403 | |
| 404 | $conn = @mysql_connect($db_config['host'], $db_config['username'], $db_config['password']); |
| 405 | if (!$conn) { |
| 406 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 407 | $results['details'] = 'Could not connect to database'; |
| 408 | return $results; |
| 409 | } |
| 410 | |
| 411 | $r = mysql_query("SHOW variables like 'auto_increment_increment'", $conn); |
| 412 | if (!$r) { |
| 413 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 414 | $results['details'] = 'Could not query database server variables'; |
| 415 | return $results; |
| 416 | } |
| 417 | |
| 418 | $values = mysql_fetch_row($r); |
| 419 | if ($values[1] != 1) { |
| 420 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 421 | $results['details'] = 'MySQL server auto_increment_increment is not 1'; |
| 422 | } |
| 423 | return $results; |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * @param $db_config |
| 428 | * |
| 429 | * @return array |
| 430 | */ |
| 431 | public function checkMysqlThreadStack($db_config) { |
| 432 | $min_thread_stack = 192; |
| 433 | |
| 434 | $results = array( |
| 435 | 'title' => 'CiviCRM Mysql thread stack', |
| 436 | 'severity' => $this::REQUIREMENT_OK, |
| 437 | 'details' => 'MySQL thread_stack is OK', |
| 438 | ); |
| 439 | |
| 440 | $conn = @mysql_connect($db_config['server'], $db_config['username'], $db_config['password']); |
| 441 | if (!$conn) { |
| 442 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 443 | $results['details'] = 'Could not connect to database'; |
| 444 | return $results; |
| 445 | } |
| 446 | |
| 447 | if (!@mysql_select_db($db_config['database'], $conn)) { |
| 448 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 449 | $results['details'] = 'Could not select the database'; |
| 450 | return $results; |
| 451 | } |
| 452 | |
| 453 | $r = mysql_query("SHOW VARIABLES LIKE 'thread_stack'", $conn); // bytes => kb |
| 454 | if (!$r) { |
| 455 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 456 | $results['details'] = 'Could not query thread_stack value'; |
| 457 | } |
| 458 | else { |
| 459 | $values = mysql_fetch_row($r); |
| 460 | if ($values[1] < (1024 * $min_thread_stack)) { |
| 461 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 462 | $results['details'] = 'MySQL thread_stack is ' . ($values[1] / 1024) . "kb (minimum required is {$min_thread_stack} kb"; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | return $results; |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * @param $db_config |
| 471 | * |
| 472 | * @return array |
| 473 | */ |
| 474 | public function checkMysqlLockTables($db_config) { |
| 475 | $results = array( |
| 476 | 'title' => 'CiviCRM MySQL Lock Tables', |
| 477 | 'severity' => $this::REQUIREMENT_OK, |
| 478 | 'details' => 'Can successfully lock and unlock tables', |
| 479 | ); |
| 480 | |
| 481 | $conn = @mysql_connect($db_config['server'], $db_config['username'], $db_config['password']); |
| 482 | if (!$conn) { |
| 483 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 484 | $results['details'] = 'Could not connect to database'; |
| 485 | return $results; |
| 486 | } |
| 487 | |
| 488 | if (!@mysql_select_db($db_config['database'], $conn)) { |
| 489 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 490 | $results['details'] = 'Could not select the database'; |
| 491 | mysql_close($conn); |
| 492 | return $results; |
| 493 | } |
| 494 | |
| 495 | $r = mysql_query('CREATE TEMPORARY TABLE civicrm_install_temp_table_test (test text)', $conn); |
| 496 | if (!$r) { |
| 497 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 498 | $results['details'] = 'Could not create a table'; |
| 499 | mysql_close($conn); |
| 500 | return $results; |
| 501 | } |
| 502 | |
| 503 | $r = mysql_query('LOCK TABLES civicrm_install_temp_table_test WRITE', $conn); |
| 504 | if (!$r) { |
| 505 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 506 | $results['details'] = 'Could not obtain a write lock'; |
| 507 | mysql_close($conn); |
| 508 | return $results; |
| 509 | } |
| 510 | |
| 511 | $r = mysql_query('UNLOCK TABLES', $conn); |
| 512 | if (!$r) { |
| 513 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 514 | $results['details'] = 'Could not release table lock'; |
| 515 | } |
| 516 | |
| 517 | mysql_close($conn); |
| 518 | return $results; |
| 519 | } |
| 520 | |
| 521 | /** |
| 522 | * @param $file_paths |
| 523 | * |
| 524 | * @return array |
| 525 | */ |
| 526 | public function checkFilepathIsWritable($file_paths) { |
| 527 | $results = array( |
| 528 | 'title' => 'CiviCRM directories are writable', |
| 529 | 'severity' => $this::REQUIREMENT_OK, |
| 530 | 'details' => 'All required directories are writable: ' . implode(', ', $file_paths), |
| 531 | ); |
| 532 | |
| 533 | $unwritable_dirs = array(); |
| 534 | foreach ($file_paths as $path) { |
| 535 | if (!is_writable($path)) { |
| 536 | $unwritable_dirs[] = $path; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | if ($unwritable_dirs) { |
| 541 | $results['severity'] = $this::REQUIREMENT_ERROR; |
| 542 | $results['details'] = "The following directories need to be made writable by the webserver: " . implode(', ', $unwritable_dirs); |
| 543 | } |
| 544 | |
| 545 | return $results; |
| 546 | } |
| 547 | |
| 548 | } |