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Nonce.php
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testMinimumPhpVersion.php
2 years ago
Common.php
1057 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Matomo - free/libre analytics platform |
| 5 | * |
| 6 | * @link https://matomo.org |
| 7 | * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later |
| 8 | * |
| 9 | */ |
| 10 | namespace Piwik; |
| 11 | |
| 12 | use Exception; |
| 13 | use Piwik\CliMulti\Process; |
| 14 | use Piwik\Container\StaticContainer; |
| 15 | use Piwik\Intl\Data\Provider\LanguageDataProvider; |
| 16 | use Piwik\Intl\Data\Provider\RegionDataProvider; |
| 17 | use Piwik\Log\LoggerInterface; |
| 18 | use Piwik\Tracker\Cache as TrackerCache; |
| 19 | /** |
| 20 | * Contains helper methods used by both Piwik Core and the Piwik Tracking engine. |
| 21 | * |
| 22 | * This is the only non-Tracker class loaded by the **\/piwik.php** file. |
| 23 | */ |
| 24 | class Common |
| 25 | { |
| 26 | // constants used to map the referrer type to an integer in the log_visit table |
| 27 | const REFERRER_TYPE_DIRECT_ENTRY = 1; |
| 28 | const REFERRER_TYPE_SEARCH_ENGINE = 2; |
| 29 | const REFERRER_TYPE_WEBSITE = 3; |
| 30 | const REFERRER_TYPE_CAMPAIGN = 6; |
| 31 | const REFERRER_TYPE_SOCIAL_NETWORK = 7; |
| 32 | // Flag used with htmlspecialchar. See php.net/htmlspecialchars. |
| 33 | const HTML_ENCODING_QUOTE_STYLE = ENT_QUOTES; |
| 34 | public static $isCliMode = null; |
| 35 | /* |
| 36 | * Database |
| 37 | */ |
| 38 | const LANGUAGE_CODE_INVALID = 'xx'; |
| 39 | /** |
| 40 | * Hashes a string into an integer which should be very low collision risks |
| 41 | * @param string $string String to hash |
| 42 | * @return int Resulting int hash |
| 43 | */ |
| 44 | public static function hashStringToInt($string) |
| 45 | { |
| 46 | $stringHash = substr(md5($string), 0, 8); |
| 47 | return base_convert($stringHash, 16, 10); |
| 48 | } |
| 49 | /** |
| 50 | * Returns a prefixed table name. |
| 51 | * |
| 52 | * The table prefix is determined by the `[database] tables_prefix` INI config |
| 53 | * option. |
| 54 | * |
| 55 | * @param string $table The table name to prefix, ie "log_visit" |
| 56 | * @return string The prefixed name, ie "piwik-production_log_visit". |
| 57 | * @api |
| 58 | */ |
| 59 | public static function prefixTable($table) |
| 60 | { |
| 61 | $prefix = \Piwik\Config::getInstance()->database['tables_prefix']; |
| 62 | return $prefix . $table; |
| 63 | } |
| 64 | /** |
| 65 | * Returns an array containing the prefixed table names of every passed argument. |
| 66 | * |
| 67 | * @param string ...$tables The table names to prefix, ie "log_visit" |
| 68 | * @return array The prefixed names in an array. |
| 69 | */ |
| 70 | public static function prefixTables(...$tables) |
| 71 | { |
| 72 | $result = array(); |
| 73 | foreach ($tables as $table) { |
| 74 | $result[] = self::prefixTable($table); |
| 75 | } |
| 76 | return $result; |
| 77 | } |
| 78 | /** |
| 79 | * Removes the prefix from a table name and returns the result. |
| 80 | * |
| 81 | * The table prefix is determined by the `[database] tables_prefix` INI config |
| 82 | * option. |
| 83 | * |
| 84 | * @param string $table The prefixed table name, eg "piwik-production_log_visit". |
| 85 | * @return string The unprefixed table name, eg "log_visit". |
| 86 | * @api |
| 87 | */ |
| 88 | public static function unprefixTable($table) |
| 89 | { |
| 90 | static $prefixTable = null; |
| 91 | if (is_null($prefixTable)) { |
| 92 | $prefixTable = \Piwik\Config::getInstance()->database['tables_prefix']; |
| 93 | } |
| 94 | if (empty($prefixTable) || strpos($table, $prefixTable) !== 0) { |
| 95 | return $table; |
| 96 | } |
| 97 | $count = 1; |
| 98 | return str_replace($prefixTable, '', $table, $count); |
| 99 | } |
| 100 | /* |
| 101 | * Tracker |
| 102 | */ |
| 103 | public static function isGoalPluginEnabled() |
| 104 | { |
| 105 | return \Piwik\Plugin\Manager::getInstance()->isPluginActivated('Goals'); |
| 106 | } |
| 107 | public static function isActionsPluginEnabled() |
| 108 | { |
| 109 | return \Piwik\Plugin\Manager::getInstance()->isPluginActivated('Actions'); |
| 110 | } |
| 111 | /** |
| 112 | * Returns true if PHP was invoked from command-line interface (shell) |
| 113 | * |
| 114 | * @since added in 0.4.4 |
| 115 | * @return bool true if PHP invoked as a CGI or from CLI |
| 116 | */ |
| 117 | public static function isPhpCliMode() |
| 118 | { |
| 119 | if (is_bool(self::$isCliMode)) { |
| 120 | return self::$isCliMode; |
| 121 | } |
| 122 | if (PHP_SAPI === 'cli') { |
| 123 | return true; |
| 124 | } |
| 125 | if (self::isPhpCgiType() && (!isset($_SERVER['REMOTE_ADDR']) || empty($_SERVER['REMOTE_ADDR']))) { |
| 126 | return true; |
| 127 | } |
| 128 | return false; |
| 129 | } |
| 130 | /** |
| 131 | * Returns true if PHP is executed as CGI type. |
| 132 | * |
| 133 | * @since added in 0.4.4 |
| 134 | * @return bool true if PHP invoked as a CGI |
| 135 | */ |
| 136 | public static function isPhpCgiType() |
| 137 | { |
| 138 | $sapiType = php_sapi_name(); |
| 139 | return substr($sapiType, 0, 3) === 'cgi'; |
| 140 | } |
| 141 | /** |
| 142 | * Returns true if the current request is a console command, eg. |
| 143 | * ./console xx:yy |
| 144 | * or |
| 145 | * php console xx:yy |
| 146 | * |
| 147 | * @return bool |
| 148 | */ |
| 149 | public static function isRunningConsoleCommand() |
| 150 | { |
| 151 | $searched = 'console'; |
| 152 | $consolePos = strpos($_SERVER['SCRIPT_NAME'], $searched); |
| 153 | $expectedConsolePos = strlen($_SERVER['SCRIPT_NAME']) - strlen($searched); |
| 154 | $isScriptIsConsole = $consolePos === $expectedConsolePos; |
| 155 | return self::isPhpCliMode() && $isScriptIsConsole; |
| 156 | } |
| 157 | /* |
| 158 | * String operations |
| 159 | */ |
| 160 | /** |
| 161 | * Multi-byte substr() - works with UTF-8. |
| 162 | * |
| 163 | * Calls `mb_substr` if available and falls back to `substr` if it's not. |
| 164 | * |
| 165 | * @param string $string |
| 166 | * @param int $start |
| 167 | * @param int|null $length optional length |
| 168 | * @return string |
| 169 | * @deprecated since 4.4 - directly use mb_substr instead |
| 170 | */ |
| 171 | public static function mb_substr($string, $start, $length = null) |
| 172 | { |
| 173 | return mb_substr($string, $start, $length, 'UTF-8'); |
| 174 | } |
| 175 | /** |
| 176 | * Gets the current process ID. |
| 177 | * Note: If getmypid is disabled, a random ID will be generated once and used throughout the request. There is a |
| 178 | * small chance that two processes at the same time may generated the same random ID. If you need to rely on the |
| 179 | * value being 100% unique, then you may need to use `getmypid` directly or some other logic. Eg in CliMulti it is |
| 180 | * fine to use `getmypid` directly as the logic won't be used if getmypid is disabled... |
| 181 | * If you are wanting to use the pid to check if the process is running eg using `ps`, then you also have to use |
| 182 | * getmypid directly. |
| 183 | * |
| 184 | * @return int|null |
| 185 | */ |
| 186 | public static function getProcessId() |
| 187 | { |
| 188 | static $pid; |
| 189 | if (!isset($pid)) { |
| 190 | if (Process::isMethodDisabled('getmypid')) { |
| 191 | $pid = \Piwik\Common::getRandomInt(12); |
| 192 | } else { |
| 193 | $pid = \getmypid(); |
| 194 | } |
| 195 | } |
| 196 | return $pid; |
| 197 | } |
| 198 | /** |
| 199 | * Multi-byte strlen() - works with UTF-8 |
| 200 | * |
| 201 | * Calls `mb_substr` if available and falls back to `substr` if not. |
| 202 | * |
| 203 | * @param string $string |
| 204 | * @return int |
| 205 | * @deprecated since 4.4 - directly use mb_strlen instead |
| 206 | */ |
| 207 | public static function mb_strlen($string) |
| 208 | { |
| 209 | return mb_strlen($string, 'UTF-8'); |
| 210 | } |
| 211 | /** |
| 212 | * Multi-byte strtolower() - works with UTF-8. |
| 213 | * |
| 214 | * Calls `mb_strtolower` if available and falls back to `strtolower` if not. |
| 215 | * |
| 216 | * @param string $string |
| 217 | * @return string |
| 218 | * @deprecated since 4.4 - directly use mb_strtolower instead |
| 219 | */ |
| 220 | public static function mb_strtolower($string) |
| 221 | { |
| 222 | return mb_strtolower($string, 'UTF-8'); |
| 223 | } |
| 224 | /** |
| 225 | * Multi-byte strtoupper() - works with UTF-8. |
| 226 | * |
| 227 | * Calls `mb_strtoupper` if available and falls back to `strtoupper` if not. |
| 228 | * |
| 229 | * @param string $string |
| 230 | * @return string |
| 231 | * @deprecated since 4.4 - directly use mb_strtoupper instead |
| 232 | */ |
| 233 | public static function mb_strtoupper($string) |
| 234 | { |
| 235 | return mb_strtoupper($string, 'UTF-8'); |
| 236 | } |
| 237 | /** |
| 238 | * Timing attack safe string comparison. |
| 239 | * |
| 240 | * @param string $stringA |
| 241 | * @param string $stringB |
| 242 | * @return bool |
| 243 | */ |
| 244 | public static function hashEquals(string $stringA, string $stringB) |
| 245 | { |
| 246 | if (function_exists('hash_equals')) { |
| 247 | return hash_equals($stringA, $stringB); |
| 248 | } |
| 249 | if (strlen($stringA) !== strlen($stringB)) { |
| 250 | return false; |
| 251 | } |
| 252 | $result = "\x00"; |
| 253 | $stringA ^= $stringB; |
| 254 | for ($i = 0; $i < strlen($stringA); $i++) { |
| 255 | $result |= $stringA[$i]; |
| 256 | } |
| 257 | return $result === "\x00"; |
| 258 | } |
| 259 | /** |
| 260 | * Secure wrapper for unserialize, which by default disallows unserializing classes |
| 261 | * |
| 262 | * @param string $string String to unserialize |
| 263 | * @param array $allowedClasses Class names that should be allowed to unserialize |
| 264 | * @param bool $rethrow Whether to rethrow exceptions or not. |
| 265 | * @return mixed |
| 266 | */ |
| 267 | public static function safe_unserialize($string, $allowedClasses = [], $rethrow = false) |
| 268 | { |
| 269 | try { |
| 270 | // phpcs:ignore Generic.PHP.ForbiddenFunctions |
| 271 | return unserialize($string ?? '', ['allowed_classes' => empty($allowedClasses) ? false : $allowedClasses]); |
| 272 | } catch (\Throwable $e) { |
| 273 | if ($rethrow) { |
| 274 | throw $e; |
| 275 | } |
| 276 | $logger = StaticContainer::get(LoggerInterface::class); |
| 277 | $logger->debug('Unable to unserialize a string: {exception} (string = {string})', ['exception' => $e, 'string' => $string]); |
| 278 | return false; |
| 279 | } |
| 280 | } |
| 281 | /* |
| 282 | * Escaping input |
| 283 | */ |
| 284 | /** |
| 285 | * Sanitizes a string to help avoid XSS vulnerabilities. |
| 286 | * |
| 287 | * This function is automatically called when {@link getRequestVar()} is called, |
| 288 | * so you should not normally have to use it. |
| 289 | * |
| 290 | * This function should be used when outputting data that isn't escaped and was |
| 291 | * obtained from the user (for example when using the `|raw` twig filter on goal names). |
| 292 | * |
| 293 | * _NOTE: Sanitized input should not be used directly in an SQL query; SQL placeholders |
| 294 | * should still be used._ |
| 295 | * |
| 296 | * **Implementation Details** |
| 297 | * |
| 298 | * - [htmlspecialchars](http://php.net/manual/en/function.htmlspecialchars.php) is used to escape text. |
| 299 | * - Single quotes are not escaped so **Piwik's amazing community** will still be |
| 300 | * **Piwik's amazing community**. |
| 301 | * - Use of the `magic_quotes` setting will not break this method. |
| 302 | * - Boolean, numeric and null values are not modified. |
| 303 | * |
| 304 | * @param mixed $value The variable to be sanitized. If an array is supplied, the contents |
| 305 | * of the array will be sanitized recursively. The keys of the array |
| 306 | * will also be sanitized. |
| 307 | * @param bool $alreadyStripslashed Implementation detail, ignore. |
| 308 | * @throws Exception If `$value` is of an incorrect type. |
| 309 | * @return mixed The sanitized value. |
| 310 | * @api |
| 311 | */ |
| 312 | public static function sanitizeInputValues($value, $alreadyStripslashed = false) |
| 313 | { |
| 314 | if (is_numeric($value)) { |
| 315 | return $value; |
| 316 | } elseif (is_string($value)) { |
| 317 | $value = self::sanitizeString($value); |
| 318 | } elseif (is_array($value)) { |
| 319 | foreach (array_keys($value) as $key) { |
| 320 | $newKey = $key; |
| 321 | $newKey = self::sanitizeInputValues($newKey, $alreadyStripslashed); |
| 322 | if ($key !== $newKey) { |
| 323 | $value[$newKey] = $value[$key]; |
| 324 | unset($value[$key]); |
| 325 | } |
| 326 | $value[$newKey] = self::sanitizeInputValues($value[$newKey], $alreadyStripslashed); |
| 327 | } |
| 328 | } elseif (!is_null($value) && !is_bool($value)) { |
| 329 | throw new Exception("The value to escape has not a supported type. Value = " . var_export($value, true)); |
| 330 | } |
| 331 | return $value; |
| 332 | } |
| 333 | /** |
| 334 | * Sanitize a single input value and removes line breaks, tabs and null characters. |
| 335 | * |
| 336 | * @param string $value |
| 337 | * @return string sanitized input |
| 338 | */ |
| 339 | public static function sanitizeInputValue($value) |
| 340 | { |
| 341 | $value = self::sanitizeLineBreaks($value); |
| 342 | $value = self::sanitizeString($value); |
| 343 | return $value; |
| 344 | } |
| 345 | /** |
| 346 | * Sanitize a single input value |
| 347 | * |
| 348 | * @param $value |
| 349 | * @return string |
| 350 | */ |
| 351 | private static function sanitizeString($value) |
| 352 | { |
| 353 | // $_GET and $_REQUEST already urldecode()'d |
| 354 | // decode |
| 355 | // note: before php 5.2.7, htmlspecialchars() double encodes &#x hex items |
| 356 | $value = html_entity_decode($value, self::HTML_ENCODING_QUOTE_STYLE, 'UTF-8'); |
| 357 | $value = self::sanitizeNullBytes($value); |
| 358 | // escape |
| 359 | $tmp = @htmlspecialchars($value, self::HTML_ENCODING_QUOTE_STYLE, 'UTF-8'); |
| 360 | // note: php 5.2.5 and above, htmlspecialchars is destructive if input is not UTF-8 |
| 361 | if ($value !== '' && $tmp === '') { |
| 362 | // convert and escape |
| 363 | $value = utf8_encode($value); |
| 364 | $tmp = htmlspecialchars($value, self::HTML_ENCODING_QUOTE_STYLE, 'UTF-8'); |
| 365 | return $tmp; |
| 366 | } |
| 367 | return $tmp; |
| 368 | } |
| 369 | /** |
| 370 | * Unsanitizes a single input value and returns the result. |
| 371 | * |
| 372 | * @param string $value |
| 373 | * @return string unsanitized input |
| 374 | * @api |
| 375 | */ |
| 376 | public static function unsanitizeInputValue($value) |
| 377 | { |
| 378 | return htmlspecialchars_decode($value ?? '', self::HTML_ENCODING_QUOTE_STYLE); |
| 379 | } |
| 380 | /** |
| 381 | * Unsanitizes one or more values and returns the result. |
| 382 | * |
| 383 | * This method should be used when you need to unescape data that was obtained from |
| 384 | * the user. |
| 385 | * |
| 386 | * Some data in Piwik is stored sanitized (such as site name). In this case you may |
| 387 | * have to use this method to unsanitize it in order to, for example, output it in JSON. |
| 388 | * |
| 389 | * @param string|array $value The data to unsanitize. If an array is passed, the |
| 390 | * array is sanitized recursively. Key values are not unsanitized. |
| 391 | * @return string|array The unsanitized data. |
| 392 | * @api |
| 393 | */ |
| 394 | public static function unsanitizeInputValues($value) |
| 395 | { |
| 396 | if (is_array($value)) { |
| 397 | $result = array(); |
| 398 | foreach ($value as $key => $arrayValue) { |
| 399 | $result[$key] = self::unsanitizeInputValues($arrayValue); |
| 400 | } |
| 401 | return $result; |
| 402 | } else { |
| 403 | return self::unsanitizeInputValue($value); |
| 404 | } |
| 405 | } |
| 406 | /** |
| 407 | * @param string $value |
| 408 | * @return string Line breaks and line carriage removed |
| 409 | */ |
| 410 | public static function sanitizeLineBreaks($value) |
| 411 | { |
| 412 | return is_null($value) ? '' : str_replace(array("\n", "\r"), '', $value); |
| 413 | } |
| 414 | /** |
| 415 | * @param string $value |
| 416 | * @return string Null bytes removed |
| 417 | */ |
| 418 | public static function sanitizeNullBytes($value) |
| 419 | { |
| 420 | return str_replace(array("\x00"), '', $value); |
| 421 | } |
| 422 | /** |
| 423 | * Gets a sanitized request parameter by name from the `$_GET` and `$_POST` superglobals. |
| 424 | * |
| 425 | * Use this function to get request parameter values. **_NEVER use `$_GET` and `$_POST` directly._** |
| 426 | * |
| 427 | * If the variable cannot be found, and a default value was not provided, an exception is raised. |
| 428 | * |
| 429 | * _See {@link sanitizeInputValues()} to learn more about sanitization._ |
| 430 | * |
| 431 | * @param string $varName Name of the request parameter to get. By default, we look in `$_GET[$varName]` |
| 432 | * and `$_POST[$varName]` for the value. |
| 433 | * @param string|null $varDefault The value to return if the request parameter cannot be found or has an empty value. |
| 434 | * @param string|null $varType Expected type of the request variable. This parameters value must be one of the following: |
| 435 | * `'array'`, `'int'`, `'integer'`, `'string'`, `'json'`. |
| 436 | * |
| 437 | * If `'json'`, the string value will be `json_decode`-d and then sanitized. |
| 438 | * @param array|null $requestArrayToUse The array to use instead of `$_GET` and `$_POST`. |
| 439 | * @throws Exception If the request parameter doesn't exist and there is no default value, or if the request parameter |
| 440 | * exists but has an incorrect type. |
| 441 | * @return mixed The sanitized request parameter. |
| 442 | * @see Request::getParameter() |
| 443 | * @deprecated Use Request class instead, which will return raw values instead. |
| 444 | * @api |
| 445 | */ |
| 446 | public static function getRequestVar($varName, $varDefault = null, $varType = null, $requestArrayToUse = null) |
| 447 | { |
| 448 | if (is_null($requestArrayToUse)) { |
| 449 | $requestArrayToUse = $_GET + $_POST; |
| 450 | } |
| 451 | $varDefault = self::sanitizeInputValues($varDefault); |
| 452 | if ($varType === 'int') { |
| 453 | // settype accepts only integer |
| 454 | // 'int' is simply a shortcut for 'integer' |
| 455 | $varType = 'integer'; |
| 456 | } |
| 457 | // there is no value $varName in the REQUEST so we try to use the default value |
| 458 | if (empty($varName) || !isset($requestArrayToUse[$varName]) || !is_array($requestArrayToUse[$varName]) && strlen($requestArrayToUse[$varName]) === 0) { |
| 459 | if (is_null($varDefault)) { |
| 460 | throw new Exception("The parameter '{$varName}' isn't set in the Request, and a default value wasn't provided."); |
| 461 | } else { |
| 462 | if (!is_null($varType) && in_array($varType, array('string', 'integer', 'array'))) { |
| 463 | settype($varDefault, $varType); |
| 464 | } |
| 465 | return $varDefault; |
| 466 | } |
| 467 | } |
| 468 | // Normal case, there is a value available in REQUEST for the requested varName: |
| 469 | // we deal w/ json differently |
| 470 | if ($varType === 'json') { |
| 471 | $value = $requestArrayToUse[$varName]; |
| 472 | if (is_string($value)) { |
| 473 | $value = json_decode($value, $assoc = true); |
| 474 | } |
| 475 | return self::sanitizeInputValues($value, true); |
| 476 | } |
| 477 | $value = self::sanitizeInputValues($requestArrayToUse[$varName]); |
| 478 | if (isset($varType)) { |
| 479 | $ok = false; |
| 480 | if ($varType === 'string') { |
| 481 | if (is_string($value) || is_int($value)) { |
| 482 | $ok = true; |
| 483 | } elseif (is_float($value)) { |
| 484 | $value = \Piwik\Common::forceDotAsSeparatorForDecimalPoint($value); |
| 485 | $ok = true; |
| 486 | } |
| 487 | } elseif ($varType === 'integer') { |
| 488 | if ($value == (string) (int) $value) { |
| 489 | $ok = true; |
| 490 | } |
| 491 | } elseif ($varType === 'float') { |
| 492 | $valueToCompare = (string) (float) $value; |
| 493 | $valueToCompare = \Piwik\Common::forceDotAsSeparatorForDecimalPoint($valueToCompare); |
| 494 | if ($value == $valueToCompare) { |
| 495 | $ok = true; |
| 496 | } |
| 497 | } elseif ($varType === 'array') { |
| 498 | if (is_array($value)) { |
| 499 | $ok = true; |
| 500 | } |
| 501 | } else { |
| 502 | throw new Exception("\$varType specified is not known. It should be one of the following: array, int, integer, float, string"); |
| 503 | } |
| 504 | // The type is not correct |
| 505 | if ($ok === false) { |
| 506 | if ($varDefault === null) { |
| 507 | throw new Exception("The parameter '{$varName}' doesn't have a correct type, and a default value wasn't provided."); |
| 508 | } else { |
| 509 | // we return the default value with the good type set |
| 510 | settype($varDefault, $varType); |
| 511 | return $varDefault; |
| 512 | } |
| 513 | } |
| 514 | settype($value, $varType); |
| 515 | } |
| 516 | return $value; |
| 517 | } |
| 518 | /* |
| 519 | * Generating unique strings |
| 520 | */ |
| 521 | /** |
| 522 | * Generates a random integer |
| 523 | * |
| 524 | * @param int $min |
| 525 | * @param null|int $max Defaults to max int value |
| 526 | * @return int |
| 527 | */ |
| 528 | public static function getRandomInt($min = 0, $max = null) |
| 529 | { |
| 530 | if (!isset($max)) { |
| 531 | $max = PHP_INT_MAX; |
| 532 | } |
| 533 | return random_int($min, $max); |
| 534 | } |
| 535 | /** |
| 536 | * Returns a 32 characters long uniq ID |
| 537 | * |
| 538 | * @return string 32 chars |
| 539 | */ |
| 540 | public static function generateUniqId() |
| 541 | { |
| 542 | return bin2hex(random_bytes(16)); |
| 543 | } |
| 544 | /** |
| 545 | * Configurable hash() algorithm (defaults to md5) |
| 546 | * |
| 547 | * @param string $str String to be hashed |
| 548 | * @param bool $raw_output |
| 549 | * @return string Hash string |
| 550 | */ |
| 551 | public static function hash($str, $raw_output = false) |
| 552 | { |
| 553 | static $hashAlgorithm = null; |
| 554 | if (is_null($hashAlgorithm)) { |
| 555 | $hashAlgorithm = @\Piwik\Config::getInstance()->General['hash_algorithm']; |
| 556 | } |
| 557 | if ($hashAlgorithm) { |
| 558 | $hash = @hash($hashAlgorithm, $str, $raw_output); |
| 559 | if ($hash !== false) { |
| 560 | return $hash; |
| 561 | } |
| 562 | } |
| 563 | return md5($str, $raw_output); |
| 564 | } |
| 565 | /** |
| 566 | * Generate random string. |
| 567 | * |
| 568 | * @param int $length string length |
| 569 | * @param string $alphabet characters allowed in random string |
| 570 | * @return string random string with given length |
| 571 | */ |
| 572 | public static function getRandomString($length = 16, $alphabet = "abcdefghijklmnoprstuvwxyz0123456789") |
| 573 | { |
| 574 | $chars = $alphabet; |
| 575 | $str = ''; |
| 576 | for ($i = 0; $i < $length; $i++) { |
| 577 | $rand_key = self::getRandomInt(0, strlen($chars) - 1); |
| 578 | $str .= substr($chars, $rand_key, 1); |
| 579 | } |
| 580 | return str_shuffle($str); |
| 581 | } |
| 582 | /* |
| 583 | * Conversions |
| 584 | */ |
| 585 | /** |
| 586 | * Convert hexadecimal representation into binary data. |
| 587 | * !! Will emit warning if input string is not hex!! |
| 588 | * |
| 589 | * @see http://php.net/bin2hex |
| 590 | * |
| 591 | * @param string $str Hexadecimal representation |
| 592 | * @return string |
| 593 | */ |
| 594 | public static function hex2bin($str) |
| 595 | { |
| 596 | return pack("H*", $str); |
| 597 | } |
| 598 | /** |
| 599 | * This function will convert the input string to the binary representation of the ID |
| 600 | * but it will throw an Exception if the specified input ID is not correct |
| 601 | * |
| 602 | * This is used when building segments containing visitorId which could be an invalid string |
| 603 | * therefore throwing Unexpected PHP error [pack(): Type H: illegal hex digit i] severity [E_WARNING] |
| 604 | * |
| 605 | * It would be simply to silent fail the pack() call above but in all other cases, we don't expect an error, |
| 606 | * so better be safe and get the php error when something unexpected is happening |
| 607 | * @param string $id |
| 608 | * @throws Exception |
| 609 | * @return string binary string |
| 610 | */ |
| 611 | public static function convertVisitorIdToBin($id) |
| 612 | { |
| 613 | if (strlen($id) !== \Piwik\Tracker::LENGTH_HEX_ID_STRING || @bin2hex(self::hex2bin($id)) != $id) { |
| 614 | throw new Exception("visitorId is expected to be a " . \Piwik\Tracker::LENGTH_HEX_ID_STRING . " hex char string"); |
| 615 | } |
| 616 | return self::hex2bin($id); |
| 617 | } |
| 618 | /** |
| 619 | * Converts a User ID string to the Visitor ID Binary representation. |
| 620 | * |
| 621 | * @param $userId |
| 622 | * @return string |
| 623 | */ |
| 624 | public static function convertUserIdToVisitorIdBin($userId) |
| 625 | { |
| 626 | $userIdHashed = \MatomoTracker::getUserIdHashed($userId); |
| 627 | return self::convertVisitorIdToBin($userIdHashed); |
| 628 | } |
| 629 | /** |
| 630 | * Detects whether an error occurred during the last json encode/decode. |
| 631 | * @return bool |
| 632 | */ |
| 633 | public static function hasJsonErrorOccurred() |
| 634 | { |
| 635 | return json_last_error() != JSON_ERROR_NONE; |
| 636 | } |
| 637 | /** |
| 638 | * Returns a human readable error message in case an error occurred during the last json encode/decode. |
| 639 | * Returns an empty string in case there was no error. |
| 640 | * |
| 641 | * @return string |
| 642 | */ |
| 643 | public static function getLastJsonError() |
| 644 | { |
| 645 | switch (json_last_error()) { |
| 646 | case JSON_ERROR_NONE: |
| 647 | return ''; |
| 648 | case JSON_ERROR_DEPTH: |
| 649 | return 'Maximum stack depth exceeded'; |
| 650 | case JSON_ERROR_STATE_MISMATCH: |
| 651 | return 'Underflow or the modes mismatch'; |
| 652 | case JSON_ERROR_CTRL_CHAR: |
| 653 | return 'Unexpected control character found'; |
| 654 | case JSON_ERROR_SYNTAX: |
| 655 | return 'Syntax error, malformed JSON'; |
| 656 | case JSON_ERROR_UTF8: |
| 657 | return 'Malformed UTF-8 characters, possibly incorrectly encoded'; |
| 658 | } |
| 659 | return 'Unknown error'; |
| 660 | } |
| 661 | public static function stringEndsWith($haystack, $needle) |
| 662 | { |
| 663 | if (strlen(strval($needle)) === 0) { |
| 664 | return true; |
| 665 | } |
| 666 | if (strlen(strval($haystack)) === 0) { |
| 667 | return false; |
| 668 | } |
| 669 | $lastCharacters = substr($haystack, -strlen($needle)); |
| 670 | return $lastCharacters === $needle; |
| 671 | } |
| 672 | /** |
| 673 | * Returns the list of parent classes for the given class. |
| 674 | * |
| 675 | * @param string $class A class name. |
| 676 | * @return string[] The list of parent classes in order from highest ancestor to the descended class. |
| 677 | */ |
| 678 | public static function getClassLineage($class) |
| 679 | { |
| 680 | $classes = array_merge(array($class), array_values(class_parents($class, $autoload = false))); |
| 681 | return array_reverse($classes); |
| 682 | } |
| 683 | /* |
| 684 | * DataFiles |
| 685 | */ |
| 686 | /** |
| 687 | * Returns list of provider names |
| 688 | * |
| 689 | * @see core/DataFiles/Providers.php |
| 690 | * |
| 691 | * @return array Array of ( dnsName => providerName ) |
| 692 | */ |
| 693 | public static function getProviderNames() |
| 694 | { |
| 695 | require_once PIWIK_INCLUDE_PATH . '/core/DataFiles/Providers.php'; |
| 696 | $providers = $GLOBALS['Piwik_ProviderNames']; |
| 697 | return $providers; |
| 698 | } |
| 699 | /* |
| 700 | * Language, country, continent |
| 701 | */ |
| 702 | /** |
| 703 | * Returns the browser language code, eg. "en-gb,en;q=0.5" |
| 704 | * |
| 705 | * @param string|null $browserLang Optional browser language, otherwise taken from the request header |
| 706 | * @return string |
| 707 | */ |
| 708 | public static function getBrowserLanguage($browserLang = null) |
| 709 | { |
| 710 | static $replacementPatterns = array( |
| 711 | // extraneous bits of RFC 3282 that we ignore |
| 712 | '/(\\\\.)/', |
| 713 | // quoted-pairs |
| 714 | '/(\\s+)/', |
| 715 | // CFWcS white space |
| 716 | '/(\\([^)]*\\))/', |
| 717 | // CFWS comments |
| 718 | '/(;q=[0-9.]+)/', |
| 719 | // quality |
| 720 | // found in the LANG environment variable |
| 721 | '/\\.(.*)/', |
| 722 | // charset (e.g., en_CA.UTF-8) |
| 723 | '/^C$/', |
| 724 | ); |
| 725 | if (is_null($browserLang)) { |
| 726 | $browserLang = self::sanitizeInputValues($_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? ''); |
| 727 | if (empty($browserLang) && self::isPhpCliMode()) { |
| 728 | $browserLang = @getenv('LANG'); |
| 729 | } |
| 730 | } |
| 731 | if (empty($browserLang)) { |
| 732 | // a fallback might be to infer the language in HTTP_USER_AGENT (i.e., localized build) |
| 733 | $browserLang = ""; |
| 734 | } else { |
| 735 | // language tags are case-insensitive per HTTP/1.1 s3.10 but the region may be capitalized per ISO3166-1; |
| 736 | // underscores are not permitted per RFC 4646 or 4647 (which obsolete RFC 1766 and 3066), |
| 737 | // but we guard against a bad user agent which naively uses its locale |
| 738 | $browserLang = strtolower(str_replace('_', '-', $browserLang)); |
| 739 | // filters |
| 740 | $browserLang = preg_replace($replacementPatterns, '', $browserLang); |
| 741 | $browserLang = preg_replace('/((^|,)chrome:.*)/', '', $browserLang, 1); |
| 742 | // Firefox bug |
| 743 | $browserLang = preg_replace('/(,)(?:en-securid,)|(?:(^|,)en-securid(,|$))/', '$1', $browserLang, 1); |
| 744 | // unregistered language tag |
| 745 | $browserLang = str_replace('sr-sp', 'sr-rs', $browserLang); |
| 746 | // unofficial (proposed) code in the wild |
| 747 | } |
| 748 | return $browserLang; |
| 749 | } |
| 750 | /** |
| 751 | * Returns the visitor country based on the Browser 'accepted language' |
| 752 | * information, but provides a hook for geolocation via IP address. |
| 753 | * |
| 754 | * @param string $lang browser lang |
| 755 | * @param bool $enableLanguageToCountryGuess If set to true, some assumption will be made and detection guessed more often, but accuracy could be affected |
| 756 | * @param string $ip |
| 757 | * @return string 2 letter ISO code |
| 758 | */ |
| 759 | public static function getCountry($lang, $enableLanguageToCountryGuess, $ip) |
| 760 | { |
| 761 | if (empty($lang) || strlen($lang) < 2 || $lang === self::LANGUAGE_CODE_INVALID) { |
| 762 | return self::LANGUAGE_CODE_INVALID; |
| 763 | } |
| 764 | /** @var RegionDataProvider $dataProvider */ |
| 765 | $dataProvider = StaticContainer::get('Piwik\\Intl\\Data\\Provider\\RegionDataProvider'); |
| 766 | $validCountries = $dataProvider->getCountryList(); |
| 767 | return self::extractCountryCodeFromBrowserLanguage($lang, $validCountries, $enableLanguageToCountryGuess); |
| 768 | } |
| 769 | /** |
| 770 | * Returns list of valid country codes |
| 771 | * |
| 772 | * @param string $browserLanguage |
| 773 | * @param array $validCountries Array of valid countries |
| 774 | * @param bool $enableLanguageToCountryGuess (if true, will guess country based on language that lacks region information) |
| 775 | * @return array Array of 2 letter ISO codes |
| 776 | */ |
| 777 | public static function extractCountryCodeFromBrowserLanguage($browserLanguage, $validCountries, $enableLanguageToCountryGuess) |
| 778 | { |
| 779 | /** @var LanguageDataProvider $dataProvider */ |
| 780 | $dataProvider = StaticContainer::get('Piwik\\Intl\\Data\\Provider\\LanguageDataProvider'); |
| 781 | $langToCountry = $dataProvider->getLanguageToCountryList(); |
| 782 | if ($enableLanguageToCountryGuess) { |
| 783 | if (preg_match('/^([a-z]{2,3})(?:,|;|$)/', $browserLanguage, $matches)) { |
| 784 | // match language (without region) to infer the country of origin |
| 785 | if (array_key_exists($matches[1], $langToCountry)) { |
| 786 | return $langToCountry[$matches[1]]; |
| 787 | } |
| 788 | } |
| 789 | } |
| 790 | if (!empty($validCountries) && preg_match_all('/[-]([a-z]{2})/', $browserLanguage, $matches, PREG_SET_ORDER)) { |
| 791 | foreach ($matches as $parts) { |
| 792 | // match location; we don't make any inferences from the language |
| 793 | if (array_key_exists($parts[1], $validCountries)) { |
| 794 | return $parts[1]; |
| 795 | } |
| 796 | } |
| 797 | } |
| 798 | return self::LANGUAGE_CODE_INVALID; |
| 799 | } |
| 800 | /** |
| 801 | * Returns the language string, based only on the Browser 'accepted language' information. |
| 802 | * * The language tag is defined by ISO 639-1 |
| 803 | * |
| 804 | * @param string $browserLanguage Browser's accepted language header |
| 805 | * @param array $validLanguages array of valid language codes |
| 806 | * @return string 2 letter ISO 639 code 'es' (Spanish) |
| 807 | */ |
| 808 | public static function extractLanguageCodeFromBrowserLanguage($browserLanguage, $validLanguages = array()) |
| 809 | { |
| 810 | $languageRegionCode = self::extractLanguageAndRegionCodeFromBrowserLanguage($browserLanguage, $validLanguages); |
| 811 | $validLanguages = self::checkValidLanguagesIsSet($validLanguages); |
| 812 | if (strlen($languageRegionCode) === 2) { |
| 813 | $languageCode = $languageRegionCode; |
| 814 | } else { |
| 815 | $languageCode = substr($languageRegionCode, 0, 2); |
| 816 | } |
| 817 | if (in_array($languageCode, $validLanguages)) { |
| 818 | return $languageCode; |
| 819 | } |
| 820 | return self::LANGUAGE_CODE_INVALID; |
| 821 | } |
| 822 | /** |
| 823 | * Returns the language and region string, based only on the Browser 'accepted language' information. |
| 824 | * * The language tag is defined by ISO 639-1 |
| 825 | * * The region tag is defined by ISO 3166-1 |
| 826 | * |
| 827 | * @param string $browserLanguage Browser's accepted language header |
| 828 | * @param array $validLanguages array of valid language/region codes. |
| 829 | * @return string 2-letter ISO 639 code 'es' (Spanish) or if found, includes the region as well: 'es-ar' |
| 830 | */ |
| 831 | public static function extractLanguageAndRegionCodeFromBrowserLanguage($browserLanguage, $validLanguages = array()) |
| 832 | { |
| 833 | $forceRegionValidation = !empty($validLanguages); |
| 834 | $validLanguages = self::checkValidLanguagesIsSet($validLanguages); |
| 835 | if (!preg_match_all('/(?:^|,)([a-z]{2,3})(?:[-][a-z]{4})?([-][a-z]{2})?/', $browserLanguage, $matches, PREG_SET_ORDER)) { |
| 836 | return self::LANGUAGE_CODE_INVALID; |
| 837 | } |
| 838 | foreach ($matches as $parts) { |
| 839 | $langIso639 = $parts[1]; |
| 840 | if (empty($langIso639)) { |
| 841 | continue; |
| 842 | } |
| 843 | // If a region tag is found eg. "fr-ca" |
| 844 | if (count($parts) === 3) { |
| 845 | $regionIso3166 = $parts[2]; |
| 846 | // eg. "-ca" |
| 847 | if (in_array($langIso639 . $regionIso3166, $validLanguages)) { |
| 848 | return $langIso639 . $regionIso3166; |
| 849 | } |
| 850 | // if a set of valid codes was provided, we do not append the region if it was not included |
| 851 | if (in_array($langIso639, $validLanguages) && !$forceRegionValidation) { |
| 852 | return $langIso639 . $regionIso3166; |
| 853 | } |
| 854 | } |
| 855 | // eg. "fr" or "es" |
| 856 | if (in_array($langIso639, $validLanguages)) { |
| 857 | return $langIso639; |
| 858 | } |
| 859 | } |
| 860 | return self::LANGUAGE_CODE_INVALID; |
| 861 | } |
| 862 | /** |
| 863 | * Returns the continent of a given country |
| 864 | * |
| 865 | * @param string $country 2 letters iso code |
| 866 | * |
| 867 | * @return string Continent (3 letters code : afr, asi, eur, amn, ams, oce) |
| 868 | */ |
| 869 | public static function getContinent($country) |
| 870 | { |
| 871 | /** @var RegionDataProvider $dataProvider */ |
| 872 | $dataProvider = StaticContainer::get('Piwik\\Intl\\Data\\Provider\\RegionDataProvider'); |
| 873 | $countryList = $dataProvider->getCountryList(); |
| 874 | if ($country === 'ti') { |
| 875 | $country = 'cn'; |
| 876 | } |
| 877 | return isset($countryList[$country]) ? $countryList[$country] : 'unk'; |
| 878 | } |
| 879 | /* |
| 880 | * Campaign |
| 881 | */ |
| 882 | /** |
| 883 | * Returns the list of Campaign parameter names that will be read to classify |
| 884 | * a visit as coming from a Campaign |
| 885 | * |
| 886 | * @return array array( |
| 887 | * 0 => array( ... ) // campaign names parameters |
| 888 | * 1 => array( ... ) // campaign keyword parameters |
| 889 | * ); |
| 890 | */ |
| 891 | public static function getCampaignParameters() |
| 892 | { |
| 893 | $return = array(\Piwik\Config::getInstance()->Tracker['campaign_var_name'], \Piwik\Config::getInstance()->Tracker['campaign_keyword_var_name']); |
| 894 | foreach ($return as &$list) { |
| 895 | if (strpos($list, ',') !== false) { |
| 896 | $list = explode(',', $list); |
| 897 | } else { |
| 898 | $list = array($list); |
| 899 | } |
| 900 | $list = array_map('trim', $list); |
| 901 | } |
| 902 | return $return; |
| 903 | } |
| 904 | /* |
| 905 | * Referrer |
| 906 | */ |
| 907 | /** |
| 908 | * Returns a string with a comma separated list of placeholders for use in an SQL query. Used mainly |
| 909 | * to fill the `IN (...)` part of a query. |
| 910 | * |
| 911 | * @param array|string $fields The names of the mysql table fields to bind, e.g. |
| 912 | * `array(fieldName1, fieldName2, fieldName3)`. |
| 913 | * |
| 914 | * _Note: The content of the array isn't important, just its length._ |
| 915 | * @return string The placeholder string, e.g. `"?, ?, ?"`. |
| 916 | * @api |
| 917 | */ |
| 918 | public static function getSqlStringFieldsArray($fields) |
| 919 | { |
| 920 | if (is_string($fields)) { |
| 921 | $fields = array($fields); |
| 922 | } |
| 923 | $count = count($fields); |
| 924 | if ($count === 0) { |
| 925 | return "''"; |
| 926 | } |
| 927 | return '?' . str_repeat(',?', $count - 1); |
| 928 | } |
| 929 | /** |
| 930 | * Force the separator for decimal point to be a dot. See https://github.com/piwik/piwik/issues/6435 |
| 931 | * If for instance a German locale is used it would be a comma otherwise. |
| 932 | * |
| 933 | * @param float|string $value |
| 934 | * @return string |
| 935 | */ |
| 936 | public static function forceDotAsSeparatorForDecimalPoint($value) |
| 937 | { |
| 938 | if (null === $value || false === $value) { |
| 939 | return $value; |
| 940 | } |
| 941 | return str_replace(',', '.', $value); |
| 942 | } |
| 943 | /** |
| 944 | * Sets outgoing header. |
| 945 | * |
| 946 | * @param string $header The header. |
| 947 | * @param bool $replace Whether to replace existing or not. |
| 948 | */ |
| 949 | public static function sendHeader($header, $replace = true) |
| 950 | { |
| 951 | // don't send header in CLI mode |
| 952 | if (!\Piwik\Common::isPhpCliMode() and !headers_sent()) { |
| 953 | header($header, $replace); |
| 954 | } |
| 955 | } |
| 956 | /** |
| 957 | * Strips outgoing header. |
| 958 | * |
| 959 | * @param string $name The header name. |
| 960 | */ |
| 961 | public static function stripHeader($name) |
| 962 | { |
| 963 | // don't strip header in CLI mode |
| 964 | if (!\Piwik\Common::isPhpCliMode() and !headers_sent()) { |
| 965 | header_remove($name); |
| 966 | } |
| 967 | } |
| 968 | /** |
| 969 | * Sends the given response code if supported. |
| 970 | * |
| 971 | * @param int $code Eg 204 |
| 972 | * |
| 973 | * @throws Exception |
| 974 | */ |
| 975 | public static function sendResponseCode($code) |
| 976 | { |
| 977 | $messages = array(200 => 'Ok', 204 => 'No Response', 301 => 'Moved Permanently', 302 => 'Found', 304 => 'Not Modified', 400 => 'Bad Request', 401 => 'Unauthorized', 403 => 'Forbidden', 404 => 'Not Found', 429 => 'Too Many Requests', 500 => 'Internal Server Error', 503 => 'Service Unavailable'); |
| 978 | if (!array_key_exists($code, $messages)) { |
| 979 | throw new Exception('Response code not supported: ' . $code); |
| 980 | } |
| 981 | if (strpos(PHP_SAPI, '-fcgi') === false) { |
| 982 | $key = 'HTTP/1.1'; |
| 983 | if (array_key_exists('SERVER_PROTOCOL', $_SERVER) && strlen($_SERVER['SERVER_PROTOCOL']) < 15 && strlen($_SERVER['SERVER_PROTOCOL']) > 1) { |
| 984 | $key = $_SERVER['SERVER_PROTOCOL']; |
| 985 | } |
| 986 | } else { |
| 987 | // FastCGI |
| 988 | $key = 'Status:'; |
| 989 | } |
| 990 | $message = $messages[$code]; |
| 991 | \Piwik\Common::sendHeader($key . ' ' . $code . ' ' . $message); |
| 992 | } |
| 993 | /** |
| 994 | * Returns the ID of the current LocationProvider (see UserCountry plugin code) from |
| 995 | * the Tracker cache. |
| 996 | */ |
| 997 | public static function getCurrentLocationProviderId() |
| 998 | { |
| 999 | $cache = TrackerCache::getCacheGeneral(); |
| 1000 | return empty($cache['currentLocationProviderId']) ? \Piwik\Plugins\UserCountry\LocationProvider::getDefaultProviderId() : $cache['currentLocationProviderId']; |
| 1001 | } |
| 1002 | /** |
| 1003 | * Marks an orphaned object for garbage collection. |
| 1004 | * |
| 1005 | * For more information: {@link https://github.com/piwik/piwik/issues/374} |
| 1006 | * @param mixed $var The object to destroy. |
| 1007 | * @api |
| 1008 | */ |
| 1009 | public static function destroy(&$var) |
| 1010 | { |
| 1011 | if (is_object($var) && method_exists($var, '__destruct')) { |
| 1012 | $var->__destruct(); |
| 1013 | } |
| 1014 | unset($var); |
| 1015 | $var = null; |
| 1016 | } |
| 1017 | /** |
| 1018 | * @deprecated Use the logger directly instead. |
| 1019 | */ |
| 1020 | public static function printDebug($info = '') |
| 1021 | { |
| 1022 | if (is_object($info)) { |
| 1023 | $info = var_export($info, true); |
| 1024 | } |
| 1025 | $logger = StaticContainer::get(LoggerInterface::class); |
| 1026 | if (is_array($info) || is_object($info)) { |
| 1027 | $out = var_export($info, true); |
| 1028 | $logger->debug($out); |
| 1029 | } else { |
| 1030 | $logger->debug($info); |
| 1031 | } |
| 1032 | } |
| 1033 | /** |
| 1034 | * Returns true if the request is an AJAX request. |
| 1035 | * |
| 1036 | * @return bool |
| 1037 | */ |
| 1038 | public static function isXmlHttpRequest() |
| 1039 | { |
| 1040 | return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest'; |
| 1041 | } |
| 1042 | /** |
| 1043 | * @param $validLanguages |
| 1044 | * @return array |
| 1045 | */ |
| 1046 | protected static function checkValidLanguagesIsSet($validLanguages) |
| 1047 | { |
| 1048 | /** @var LanguageDataProvider $dataProvider */ |
| 1049 | $dataProvider = StaticContainer::get('Piwik\\Intl\\Data\\Provider\\LanguageDataProvider'); |
| 1050 | if (empty($validLanguages)) { |
| 1051 | $validLanguages = array_keys($dataProvider->getLanguageList()); |
| 1052 | return $validLanguages; |
| 1053 | } |
| 1054 | return $validLanguages; |
| 1055 | } |
| 1056 | } |
| 1057 |