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| 1 | <?php |
| 2 | /** |
| 3 | * Global functions used everywhere. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | */ |
| 22 | |
| 23 | use MediaWiki\HookContainer\HookRunner; |
| 24 | use MediaWiki\Libs\UnpackFailedException; |
| 25 | use MediaWiki\Logger\LoggerFactory; |
| 26 | use MediaWiki\MediaWikiServices; |
| 27 | use MediaWiki\ProcOpenError; |
| 28 | use MediaWiki\Request\WebRequest; |
| 29 | use MediaWiki\Shell\Shell; |
| 30 | use MediaWiki\StubObject\StubUserLang; |
| 31 | use MediaWiki\Title\Title; |
| 32 | use MediaWiki\Utils\MWTimestamp; |
| 33 | use MediaWiki\Utils\UrlUtils; |
| 34 | use Wikimedia\AtEase\AtEase; |
| 35 | use Wikimedia\ParamValidator\TypeDef\ExpiryDef; |
| 36 | use Wikimedia\RequestTimeout\RequestTimeout; |
| 37 | |
| 38 | /** |
| 39 | * Load an extension |
| 40 | * |
| 41 | * This queues an extension to be loaded through |
| 42 | * the ExtensionRegistry system. |
| 43 | * |
| 44 | * @param string $ext Name of the extension to load |
| 45 | * @param string|null $path Absolute path of where to find the extension.json file |
| 46 | * @since 1.25 |
| 47 | */ |
| 48 | function wfLoadExtension( $ext, $path = null ) { |
| 49 | if ( !$path ) { |
| 50 | global $wgExtensionDirectory; |
| 51 | $path = "$wgExtensionDirectory/$ext/extension.json"; |
| 52 | } |
| 53 | ExtensionRegistry::getInstance()->queue( $path ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Load multiple extensions at once |
| 58 | * |
| 59 | * Same as wfLoadExtension, but more efficient if you |
| 60 | * are loading multiple extensions. |
| 61 | * |
| 62 | * If you want to specify custom paths, you should interact with |
| 63 | * ExtensionRegistry directly. |
| 64 | * |
| 65 | * @see wfLoadExtension |
| 66 | * @param string[] $exts Array of extension names to load |
| 67 | * @since 1.25 |
| 68 | */ |
| 69 | function wfLoadExtensions( array $exts ) { |
| 70 | global $wgExtensionDirectory; |
| 71 | $registry = ExtensionRegistry::getInstance(); |
| 72 | foreach ( $exts as $ext ) { |
| 73 | $registry->queue( "$wgExtensionDirectory/$ext/extension.json" ); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Load a skin |
| 79 | * |
| 80 | * @see wfLoadExtension |
| 81 | * @param string $skin Name of the extension to load |
| 82 | * @param string|null $path Absolute path of where to find the skin.json file |
| 83 | * @since 1.25 |
| 84 | */ |
| 85 | function wfLoadSkin( $skin, $path = null ) { |
| 86 | if ( !$path ) { |
| 87 | global $wgStyleDirectory; |
| 88 | $path = "$wgStyleDirectory/$skin/skin.json"; |
| 89 | } |
| 90 | ExtensionRegistry::getInstance()->queue( $path ); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * Load multiple skins at once |
| 95 | * |
| 96 | * @see wfLoadExtensions |
| 97 | * @param string[] $skins Array of extension names to load |
| 98 | * @since 1.25 |
| 99 | */ |
| 100 | function wfLoadSkins( array $skins ) { |
| 101 | global $wgStyleDirectory; |
| 102 | $registry = ExtensionRegistry::getInstance(); |
| 103 | foreach ( $skins as $skin ) { |
| 104 | $registry->queue( "$wgStyleDirectory/$skin/skin.json" ); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Like array_diff( $arr1, $arr2 ) except that it works with two-dimensional arrays. |
| 110 | * @param string[]|array[] $arr1 |
| 111 | * @param string[]|array[] $arr2 |
| 112 | * @return array |
| 113 | */ |
| 114 | function wfArrayDiff2( $arr1, $arr2 ) { |
| 115 | /** |
| 116 | * @param string|array $a |
| 117 | * @param string|array $b |
| 118 | */ |
| 119 | $comparator = static function ( $a, $b ): int { |
| 120 | if ( is_string( $a ) && is_string( $b ) ) { |
| 121 | return strcmp( $a, $b ); |
| 122 | } |
| 123 | if ( !is_array( $a ) && !is_array( $b ) ) { |
| 124 | throw new InvalidArgumentException( |
| 125 | 'This function assumes that array elements are all strings or all arrays' |
| 126 | ); |
| 127 | } |
| 128 | if ( count( $a ) !== count( $b ) ) { |
| 129 | return count( $a ) <=> count( $b ); |
| 130 | } else { |
| 131 | reset( $a ); |
| 132 | reset( $b ); |
| 133 | while ( key( $a ) !== null && key( $b ) !== null ) { |
| 134 | $valueA = current( $a ); |
| 135 | $valueB = current( $b ); |
| 136 | $cmp = strcmp( $valueA, $valueB ); |
| 137 | if ( $cmp !== 0 ) { |
| 138 | return $cmp; |
| 139 | } |
| 140 | next( $a ); |
| 141 | next( $b ); |
| 142 | } |
| 143 | return 0; |
| 144 | } |
| 145 | }; |
| 146 | return array_udiff( $arr1, $arr2, $comparator ); |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Merge arrays in the style of PermissionManager::getPermissionErrors, with duplicate removal |
| 151 | * e.g. |
| 152 | * wfMergeErrorArrays( |
| 153 | * [ [ 'x' ] ], |
| 154 | * [ [ 'x', '2' ] ], |
| 155 | * [ [ 'x' ] ], |
| 156 | * [ [ 'y' ] ] |
| 157 | * ); |
| 158 | * returns: |
| 159 | * [ |
| 160 | * [ 'x', '2' ], |
| 161 | * [ 'x' ], |
| 162 | * [ 'y' ] |
| 163 | * ] |
| 164 | * |
| 165 | * @param array[] ...$args |
| 166 | * @return array |
| 167 | */ |
| 168 | function wfMergeErrorArrays( ...$args ) { |
| 169 | $out = []; |
| 170 | foreach ( $args as $errors ) { |
| 171 | foreach ( $errors as $params ) { |
| 172 | $originalParams = $params; |
| 173 | if ( $params[0] instanceof MessageSpecifier ) { |
| 174 | $params = [ $params[0]->getKey(), ...$params[0]->getParams() ]; |
| 175 | } |
| 176 | # @todo FIXME: Sometimes get nested arrays for $params, |
| 177 | # which leads to E_NOTICEs |
| 178 | $spec = implode( "\t", $params ); |
| 179 | $out[$spec] = $originalParams; |
| 180 | } |
| 181 | } |
| 182 | return array_values( $out ); |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * Insert an array into another array after the specified key. If the key is |
| 187 | * not present in the input array, it is returned without modification. |
| 188 | * |
| 189 | * @param array $array |
| 190 | * @param array $insert The array to insert. |
| 191 | * @param mixed $after The key to insert after. |
| 192 | * @return array |
| 193 | */ |
| 194 | function wfArrayInsertAfter( array $array, array $insert, $after ) { |
| 195 | // Find the offset of the element to insert after. |
| 196 | $keys = array_keys( $array ); |
| 197 | $offsetByKey = array_flip( $keys ); |
| 198 | |
| 199 | if ( !\array_key_exists( $after, $offsetByKey ) ) { |
| 200 | return $array; |
| 201 | } |
| 202 | $offset = $offsetByKey[$after]; |
| 203 | |
| 204 | // Insert at the specified offset |
| 205 | $before = array_slice( $array, 0, $offset + 1, true ); |
| 206 | $after = array_slice( $array, $offset + 1, count( $array ) - $offset, true ); |
| 207 | |
| 208 | $output = $before + $insert + $after; |
| 209 | |
| 210 | return $output; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Recursively converts the parameter (an object) to an array with the same data |
| 215 | * |
| 216 | * @phpcs:ignore MediaWiki.Commenting.FunctionComment.ObjectTypeHintParam |
| 217 | * @param object|array $objOrArray |
| 218 | * @param bool $recursive |
| 219 | * @return array |
| 220 | */ |
| 221 | function wfObjectToArray( $objOrArray, $recursive = true ) { |
| 222 | $array = []; |
| 223 | if ( is_object( $objOrArray ) ) { |
| 224 | $objOrArray = get_object_vars( $objOrArray ); |
| 225 | } |
| 226 | foreach ( $objOrArray as $key => $value ) { |
| 227 | if ( $recursive && ( is_object( $value ) || is_array( $value ) ) ) { |
| 228 | $value = wfObjectToArray( $value ); |
| 229 | } |
| 230 | |
| 231 | $array[$key] = $value; |
| 232 | } |
| 233 | |
| 234 | return $array; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Get a random decimal value in the domain of [0, 1), in a way |
| 239 | * not likely to give duplicate values for any realistic |
| 240 | * number of articles. |
| 241 | * |
| 242 | * @note This is designed for use in relation to Special:RandomPage |
| 243 | * and the page_random database field. |
| 244 | * |
| 245 | * @return string |
| 246 | */ |
| 247 | function wfRandom() { |
| 248 | // The maximum random value is "only" 2^31-1, so get two random |
| 249 | // values to reduce the chance of dupes |
| 250 | $max = mt_getrandmax() + 1; |
| 251 | $rand = number_format( ( mt_rand() * $max + mt_rand() ) / $max / $max, 12, '.', '' ); |
| 252 | return $rand; |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Get a random string containing a number of pseudo-random hex characters. |
| 257 | * |
| 258 | * @note This is not secure, if you are trying to generate some sort |
| 259 | * of token please use MWCryptRand instead. |
| 260 | * |
| 261 | * @param int $length The length of the string to generate |
| 262 | * @return string |
| 263 | * @since 1.20 |
| 264 | */ |
| 265 | function wfRandomString( $length = 32 ) { |
| 266 | $str = ''; |
| 267 | for ( $n = 0; $n < $length; $n += 7 ) { |
| 268 | $str .= sprintf( '%07x', mt_rand() & 0xfffffff ); |
| 269 | } |
| 270 | return substr( $str, 0, $length ); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * We want some things to be included as literal characters in our title URLs |
| 275 | * for prettiness, which urlencode encodes by default. According to RFC 1738, |
| 276 | * all of the following should be safe: |
| 277 | * |
| 278 | * ;:@&=$-_.+!*'(), |
| 279 | * |
| 280 | * RFC 1738 says ~ is unsafe, however RFC 3986 considers it an unreserved |
| 281 | * character which should not be encoded. More importantly, google chrome |
| 282 | * always converts %7E back to ~, and converting it in this function can |
| 283 | * cause a redirect loop (T105265). |
| 284 | * |
| 285 | * But + is not safe because it's used to indicate a space; &= are only safe in |
| 286 | * paths and not in queries (and we don't distinguish here); ' seems kind of |
| 287 | * scary; and urlencode() doesn't touch -_. to begin with. Plus, although / |
| 288 | * is reserved, we don't care. So the list we unescape is: |
| 289 | * |
| 290 | * ;:@$!*(),/~ |
| 291 | * |
| 292 | * However, IIS7 redirects fail when the url contains a colon (see T24709), |
| 293 | * so no fancy : for IIS7. |
| 294 | * |
| 295 | * %2F in the page titles seems to fatally break for some reason. |
| 296 | * |
| 297 | * @param string $s |
| 298 | * @return string |
| 299 | */ |
| 300 | function wfUrlencode( $s ) { |
| 301 | static $needle; |
| 302 | |
| 303 | if ( $s === null ) { |
| 304 | // Reset $needle for testing. |
| 305 | $needle = null; |
| 306 | return ''; |
| 307 | } |
| 308 | |
| 309 | if ( $needle === null ) { |
| 310 | $needle = [ '%3B', '%40', '%24', '%21', '%2A', '%28', '%29', '%2C', '%2F', '%7E' ]; |
| 311 | if ( !isset( $_SERVER['SERVER_SOFTWARE'] ) || |
| 312 | !str_contains( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7' ) |
| 313 | ) { |
| 314 | $needle[] = '%3A'; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | $s = urlencode( $s ); |
| 319 | $s = str_ireplace( |
| 320 | $needle, |
| 321 | [ ';', '@', '$', '!', '*', '(', ')', ',', '/', '~', ':' ], |
| 322 | $s |
| 323 | ); |
| 324 | |
| 325 | return $s; |
| 326 | } |
| 327 | |
| 328 | /** |
| 329 | * This function takes one or two arrays as input, and returns a CGI-style string, e.g. |
| 330 | * "days=7&limit=100". Options in the first array override options in the second. |
| 331 | * Options set to null or false will not be output. |
| 332 | * |
| 333 | * @param array $array1 ( String|Array ) |
| 334 | * @param array|null $array2 ( String|Array ) |
| 335 | * @param string $prefix |
| 336 | * @return string |
| 337 | */ |
| 338 | function wfArrayToCgi( $array1, $array2 = null, $prefix = '' ) { |
| 339 | if ( $array2 !== null ) { |
| 340 | $array1 += $array2; |
| 341 | } |
| 342 | |
| 343 | $cgi = ''; |
| 344 | foreach ( $array1 as $key => $value ) { |
| 345 | if ( $value !== null && $value !== false ) { |
| 346 | if ( $cgi != '' ) { |
| 347 | $cgi .= '&'; |
| 348 | } |
| 349 | if ( $prefix !== '' ) { |
| 350 | $key = $prefix . "[$key]"; |
| 351 | } |
| 352 | if ( is_array( $value ) ) { |
| 353 | $firstTime = true; |
| 354 | foreach ( $value as $k => $v ) { |
| 355 | $cgi .= $firstTime ? '' : '&'; |
| 356 | if ( is_array( $v ) ) { |
| 357 | $cgi .= wfArrayToCgi( $v, null, $key . "[$k]" ); |
| 358 | } else { |
| 359 | $cgi .= urlencode( $key . "[$k]" ) . '=' . urlencode( $v ); |
| 360 | } |
| 361 | $firstTime = false; |
| 362 | } |
| 363 | } else { |
| 364 | if ( is_object( $value ) ) { |
| 365 | $value = $value->__toString(); |
| 366 | } |
| 367 | $cgi .= urlencode( $key ) . '=' . urlencode( $value ); |
| 368 | } |
| 369 | } |
| 370 | } |
| 371 | return $cgi; |
| 372 | } |
| 373 | |
| 374 | /** |
| 375 | * This is the logical opposite of wfArrayToCgi(): it accepts a query string as |
| 376 | * its argument and returns the same string in array form. This allows compatibility |
| 377 | * with legacy functions that accept raw query strings instead of nice |
| 378 | * arrays. Of course, keys and values are urldecode()d. |
| 379 | * |
| 380 | * @param string $query Query string |
| 381 | * @return string[] Array version of input |
| 382 | */ |
| 383 | function wfCgiToArray( $query ) { |
| 384 | if ( isset( $query[0] ) && $query[0] == '?' ) { |
| 385 | $query = substr( $query, 1 ); |
| 386 | } |
| 387 | $bits = explode( '&', $query ); |
| 388 | $ret = []; |
| 389 | foreach ( $bits as $bit ) { |
| 390 | if ( $bit === '' ) { |
| 391 | continue; |
| 392 | } |
| 393 | if ( strpos( $bit, '=' ) === false ) { |
| 394 | // Pieces like &qwerty become 'qwerty' => '' (at least this is what php does) |
| 395 | $key = $bit; |
| 396 | $value = ''; |
| 397 | } else { |
| 398 | [ $key, $value ] = explode( '=', $bit ); |
| 399 | } |
| 400 | $key = urldecode( $key ); |
| 401 | $value = urldecode( $value ); |
| 402 | if ( strpos( $key, '[' ) !== false ) { |
| 403 | $keys = array_reverse( explode( '[', $key ) ); |
| 404 | $key = array_pop( $keys ); |
| 405 | $temp = $value; |
| 406 | foreach ( $keys as $k ) { |
| 407 | $k = substr( $k, 0, -1 ); |
| 408 | $temp = [ $k => $temp ]; |
| 409 | } |
| 410 | if ( isset( $ret[$key] ) && is_array( $ret[$key] ) ) { |
| 411 | $ret[$key] = array_merge( $ret[$key], $temp ); |
| 412 | } else { |
| 413 | $ret[$key] = $temp; |
| 414 | } |
| 415 | } else { |
| 416 | $ret[$key] = $value; |
| 417 | } |
| 418 | } |
| 419 | return $ret; |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * Append a query string to an existing URL, which may or may not already |
| 424 | * have query string parameters already. If so, they will be combined. |
| 425 | * |
| 426 | * @param string $url |
| 427 | * @param string|array $query String or associative array |
| 428 | * @return string |
| 429 | */ |
| 430 | function wfAppendQuery( $url, $query ) { |
| 431 | if ( is_array( $query ) ) { |
| 432 | $query = wfArrayToCgi( $query ); |
| 433 | } |
| 434 | if ( $query != '' ) { |
| 435 | // Remove the fragment, if there is one |
| 436 | $fragment = false; |
| 437 | $hashPos = strpos( $url, '#' ); |
| 438 | if ( $hashPos !== false ) { |
| 439 | $fragment = substr( $url, $hashPos ); |
| 440 | $url = substr( $url, 0, $hashPos ); |
| 441 | } |
| 442 | |
| 443 | // Add parameter |
| 444 | if ( strpos( $url, '?' ) === false ) { |
| 445 | $url .= '?'; |
| 446 | } else { |
| 447 | $url .= '&'; |
| 448 | } |
| 449 | $url .= $query; |
| 450 | |
| 451 | // Put the fragment back |
| 452 | if ( $fragment !== false ) { |
| 453 | $url .= $fragment; |
| 454 | } |
| 455 | } |
| 456 | return $url; |
| 457 | } |
| 458 | |
| 459 | /** |
| 460 | * @deprecated Get a UrlUtils from services, or construct your own |
| 461 | * @internal |
| 462 | * @return UrlUtils from services if initialized, otherwise make one from globals |
| 463 | */ |
| 464 | function wfGetUrlUtils(): UrlUtils { |
| 465 | global $wgServer, $wgCanonicalServer, $wgInternalServer, $wgRequest, $wgHttpsPort, |
| 466 | $wgUrlProtocols; |
| 467 | |
| 468 | if ( MediaWikiServices::hasInstance() ) { |
| 469 | $services = MediaWikiServices::getInstance(); |
| 470 | if ( $services->hasService( 'UrlUtils' ) ) { |
| 471 | return $services->getUrlUtils(); |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | return new UrlUtils( [ |
| 476 | // UrlUtils throws if the relevant $wg(|Canonical|Internal) variable is null, but the old |
| 477 | // implementations implicitly converted it to an empty string (presumably by mistake). |
| 478 | // Preserve the old behavior for compatibility. |
| 479 | UrlUtils::SERVER => $wgServer ?? '', |
| 480 | UrlUtils::CANONICAL_SERVER => $wgCanonicalServer ?? '', |
| 481 | UrlUtils::INTERNAL_SERVER => $wgInternalServer ?? '', |
| 482 | UrlUtils::FALLBACK_PROTOCOL => $wgRequest ? $wgRequest->getProtocol() |
| 483 | : WebRequest::detectProtocol(), |
| 484 | UrlUtils::HTTPS_PORT => $wgHttpsPort, |
| 485 | UrlUtils::VALID_PROTOCOLS => $wgUrlProtocols, |
| 486 | ] ); |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * Expand a potentially local URL to a fully-qualified URL using $wgServer |
| 491 | * (or one of its alternatives). |
| 492 | * |
| 493 | * The meaning of the PROTO_* constants is as follows: |
| 494 | * PROTO_HTTP: Output a URL starting with http:// |
| 495 | * PROTO_HTTPS: Output a URL starting with https:// |
| 496 | * PROTO_RELATIVE: Output a URL starting with // (protocol-relative URL) |
| 497 | * PROTO_CURRENT: Output a URL starting with either http:// or https:// , depending |
| 498 | * on which protocol was used for the current incoming request |
| 499 | * PROTO_CANONICAL: For URLs without a domain, like /w/index.php , use $wgCanonicalServer. |
| 500 | * For protocol-relative URLs, use the protocol of $wgCanonicalServer |
| 501 | * PROTO_INTERNAL: Like PROTO_CANONICAL, but uses $wgInternalServer instead of $wgCanonicalServer |
| 502 | * |
| 503 | * If $url specifies a protocol, or $url is domain-relative and $wgServer |
| 504 | * specifies a protocol, PROTO_HTTP, PROTO_HTTPS, PROTO_RELATIVE and |
| 505 | * PROTO_CURRENT do not change that. |
| 506 | * |
| 507 | * Parent references (/../) in the path are resolved (as in wfRemoveDotSegments). |
| 508 | * |
| 509 | * @deprecated since 1.39, use UrlUtils::expand() |
| 510 | * @param string $url An URL; can be absolute (e.g. http://example.com/foo/bar), |
| 511 | * protocol-relative (//example.com/foo/bar) or domain-relative (/foo/bar). |
| 512 | * @param string|int|null $defaultProto One of the PROTO_* constants, as described above. |
| 513 | * @return string|false Fully-qualified URL, current-path-relative URL or false if |
| 514 | * no valid URL can be constructed |
| 515 | */ |
| 516 | function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT ) { |
| 517 | return wfGetUrlUtils()->expand( (string)$url, $defaultProto ) ?? false; |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * Get the wiki's "server", i.e. the protocol and host part of the URL, with a |
| 522 | * protocol specified using a PROTO_* constant as in wfExpandUrl() |
| 523 | * |
| 524 | * @deprecated since 1.39, use UrlUtils::getServer() |
| 525 | * @since 1.32 |
| 526 | * @param string|int|null $proto One of the PROTO_* constants. |
| 527 | * @return string The URL |
| 528 | */ |
| 529 | function wfGetServerUrl( $proto ) { |
| 530 | return wfGetUrlUtils()->getServer( $proto ) ?? ''; |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * This function will reassemble a URL parsed with wfParseURL. This is useful |
| 535 | * if you need to edit part of a URL and put it back together. |
| 536 | * |
| 537 | * This is the basic structure used (brackets contain keys for $urlParts): |
| 538 | * [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment] |
| 539 | * |
| 540 | * @deprecated since 1.39, use UrlUtils::assemble() |
| 541 | * @since 1.19 |
| 542 | * @param array $urlParts URL parts, as output from wfParseUrl |
| 543 | * @return string URL assembled from its component parts |
| 544 | */ |
| 545 | function wfAssembleUrl( $urlParts ) { |
| 546 | return UrlUtils::assemble( (array)$urlParts ); |
| 547 | } |
| 548 | |
| 549 | /** |
| 550 | * Remove all dot-segments in the provided URL path. For example, |
| 551 | * '/a/./b/../c/' becomes '/a/c/'. For details on the algorithm, please see |
| 552 | * RFC3986 section 5.2.4. |
| 553 | * |
| 554 | * @deprecated since 1.39, use UrlUtils::removeDotSegments() |
| 555 | * @since 1.19 |
| 556 | * @param string $urlPath URL path, potentially containing dot-segments |
| 557 | * @return string URL path with all dot-segments removed |
| 558 | */ |
| 559 | function wfRemoveDotSegments( $urlPath ) { |
| 560 | return UrlUtils::removeDotSegments( (string)$urlPath ); |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * Returns a partial regular expression of recognized URL protocols, e.g. "http:\/\/|https:\/\/" |
| 565 | * |
| 566 | * @deprecated since 1.39, use UrlUtils::validProtocols() |
| 567 | * @param bool $includeProtocolRelative If false, remove '//' from the returned protocol list. |
| 568 | * DO NOT USE this directly, use wfUrlProtocolsWithoutProtRel() instead |
| 569 | * @return string |
| 570 | */ |
| 571 | function wfUrlProtocols( $includeProtocolRelative = true ) { |
| 572 | return $includeProtocolRelative ? wfGetUrlUtils()->validProtocols() : |
| 573 | wfGetUrlUtils()->validAbsoluteProtocols(); |
| 574 | } |
| 575 | |
| 576 | /** |
| 577 | * Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if |
| 578 | * you need a regex that matches all URL protocols but does not match protocol- |
| 579 | * relative URLs |
| 580 | * @deprecated since 1.39, use UrlUtils::validAbsoluteProtocols() |
| 581 | * @return string |
| 582 | */ |
| 583 | function wfUrlProtocolsWithoutProtRel() { |
| 584 | return wfGetUrlUtils()->validAbsoluteProtocols(); |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * parse_url() work-alike, but non-broken. Differences: |
| 589 | * |
| 590 | * 1) Handles protocols that don't use :// (e.g., mailto: and news:, as well as |
| 591 | * protocol-relative URLs) correctly. |
| 592 | * 2) Adds a "delimiter" element to the array (see (2)). |
| 593 | * 3) Verifies that the protocol is on the $wgUrlProtocols allowed list. |
| 594 | * 4) Rejects some invalid URLs that parse_url doesn't, e.g. the empty string or URLs starting with |
| 595 | * a line feed character. |
| 596 | * |
| 597 | * @deprecated since 1.39, use UrlUtils::parse() |
| 598 | * @param string $url A URL to parse |
| 599 | * @return string[]|false Bits of the URL in an associative array, or false on failure. |
| 600 | * Possible fields: |
| 601 | * - scheme: URI scheme (protocol), e.g. 'http', 'mailto'. Lowercase, always present, but can |
| 602 | * be an empty string for protocol-relative URLs. |
| 603 | * - delimiter: either '://', ':' or '//'. Always present. |
| 604 | * - host: domain name / IP. Always present, but could be an empty string, e.g. for file: URLs. |
| 605 | * - port: port number. Will be missing when port is not explicitly specified. |
| 606 | * - user: user name, e.g. for HTTP Basic auth URLs such as http://user:pass@example.com/ |
| 607 | * Missing when there is no username. |
| 608 | * - pass: password, same as above. |
| 609 | * - path: path including the leading /. Will be missing when empty (e.g. 'http://example.com') |
| 610 | * - query: query string (as a string; see wfCgiToArray() for parsing it), can be missing. |
| 611 | * - fragment: the part after #, can be missing. |
| 612 | */ |
| 613 | function wfParseUrl( $url ) { |
| 614 | return wfGetUrlUtils()->parse( (string)$url ) ?? false; |
| 615 | } |
| 616 | |
| 617 | /** |
| 618 | * Take a URL, make sure it's expanded to fully qualified, and replace any |
| 619 | * encoded non-ASCII Unicode characters with their UTF-8 original forms |
| 620 | * for more compact display and legibility for local audiences. |
| 621 | * |
| 622 | * @deprecated since 1.39, use UrlUtils::expandIRI() |
| 623 | * @param string $url |
| 624 | * @return string |
| 625 | */ |
| 626 | function wfExpandIRI( $url ) { |
| 627 | return wfGetUrlUtils()->expandIRI( (string)$url ) ?? ''; |
| 628 | } |
| 629 | |
| 630 | /** |
| 631 | * Check whether a given URL has a domain that occurs in a given set of domains |
| 632 | * |
| 633 | * @deprecated since 1.39, use UrlUtils::expandIRI() |
| 634 | * @param string $url |
| 635 | * @param array $domains Array of domains (strings) |
| 636 | * @return bool True if the host part of $url ends in one of the strings in $domains |
| 637 | */ |
| 638 | function wfMatchesDomainList( $url, $domains ) { |
| 639 | return wfGetUrlUtils()->matchesDomainList( (string)$url, (array)$domains ); |
| 640 | } |
| 641 | |
| 642 | /** |
| 643 | * Sends a line to the debug log if enabled or, optionally, to a comment in output. |
| 644 | * In normal operation this is a NOP. |
| 645 | * |
| 646 | * Controlling globals: |
| 647 | * $wgDebugLogFile - points to the log file |
| 648 | * $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output. |
| 649 | * $wgDebugComments - if on, some debug items may appear in comments in the HTML output. |
| 650 | * |
| 651 | * @since 1.25 support for additional context data |
| 652 | * |
| 653 | * @param string $text |
| 654 | * @param string|bool $dest Destination of the message: |
| 655 | * - 'all': both to the log and HTML (debug toolbar or HTML comments) |
| 656 | * - 'private': excluded from HTML output |
| 657 | * For backward compatibility, it can also take a boolean: |
| 658 | * - true: same as 'all' |
| 659 | * - false: same as 'private' |
| 660 | * @param array $context Additional logging context data |
| 661 | */ |
| 662 | function wfDebug( $text, $dest = 'all', array $context = [] ) { |
| 663 | global $wgDebugRawPage, $wgDebugLogPrefix; |
| 664 | |
| 665 | if ( !$wgDebugRawPage && wfIsDebugRawPage() ) { |
| 666 | return; |
| 667 | } |
| 668 | |
| 669 | $text = trim( $text ); |
| 670 | |
| 671 | if ( $wgDebugLogPrefix !== '' ) { |
| 672 | $context['prefix'] = $wgDebugLogPrefix; |
| 673 | } |
| 674 | $context['private'] = ( $dest === false || $dest === 'private' ); |
| 675 | |
| 676 | $logger = LoggerFactory::getInstance( 'wfDebug' ); |
| 677 | $logger->debug( $text, $context ); |
| 678 | } |
| 679 | |
| 680 | /** |
| 681 | * Returns true if debug logging should be suppressed if $wgDebugRawPage = false |
| 682 | * @return bool |
| 683 | */ |
| 684 | function wfIsDebugRawPage() { |
| 685 | static $cache; |
| 686 | if ( $cache !== null ) { |
| 687 | return $cache; |
| 688 | } |
| 689 | // Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet |
| 690 | // phpcs:ignore MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals |
| 691 | if ( ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' ) |
| 692 | || MW_ENTRY_POINT === 'load' |
| 693 | ) { |
| 694 | $cache = true; |
| 695 | } else { |
| 696 | $cache = false; |
| 697 | } |
| 698 | return $cache; |
| 699 | } |
| 700 | |
| 701 | /** |
| 702 | * Send a line to a supplementary debug log file, if configured, or main debug |
| 703 | * log if not. |
| 704 | * |
| 705 | * To configure a supplementary log file, set $wgDebugLogGroups[$logGroup] to |
| 706 | * a string filename or an associative array mapping 'destination' to the |
| 707 | * desired filename. The associative array may also contain a 'sample' key |
| 708 | * with an integer value, specifying a sampling factor. Sampled log events |
| 709 | * will be emitted with a 1 in N random chance. |
| 710 | * |
| 711 | * @since 1.23 support for sampling log messages via $wgDebugLogGroups. |
| 712 | * @since 1.25 support for additional context data |
| 713 | * @since 1.25 sample behavior dependent on configured $wgMWLoggerDefaultSpi |
| 714 | * |
| 715 | * @param string $logGroup |
| 716 | * @param string $text |
| 717 | * @param string|bool $dest Destination of the message: |
| 718 | * - 'all': both to the log and HTML (debug toolbar or HTML comments) |
| 719 | * - 'private': only to the specific log if set in $wgDebugLogGroups and |
| 720 | * discarded otherwise |
| 721 | * For backward compatibility, it can also take a boolean: |
| 722 | * - true: same as 'all' |
| 723 | * - false: same as 'private' |
| 724 | * @param array $context Additional logging context data |
| 725 | */ |
| 726 | function wfDebugLog( |
| 727 | $logGroup, $text, $dest = 'all', array $context = [] |
| 728 | ) { |
| 729 | $text = trim( $text ); |
| 730 | |
| 731 | $logger = LoggerFactory::getInstance( $logGroup ); |
| 732 | $context['private'] = ( $dest === false || $dest === 'private' ); |
| 733 | $logger->info( $text, $context ); |
| 734 | } |
| 735 | |
| 736 | /** |
| 737 | * Log for database errors |
| 738 | * |
| 739 | * @since 1.25 support for additional context data |
| 740 | * |
| 741 | * @param string $text Database error message. |
| 742 | * @param array $context Additional logging context data |
| 743 | */ |
| 744 | function wfLogDBError( $text, array $context = [] ) { |
| 745 | $logger = LoggerFactory::getInstance( 'wfLogDBError' ); |
| 746 | $logger->error( trim( $text ), $context ); |
| 747 | } |
| 748 | |
| 749 | /** |
| 750 | * Logs a warning that a deprecated feature was used. |
| 751 | * |
| 752 | * To write a custom deprecation message, use wfDeprecatedMsg() instead. |
| 753 | * |
| 754 | * @param string $function Feature that is deprecated. |
| 755 | * @param string|false $version Version of MediaWiki that the feature |
| 756 | * was deprecated in (Added in 1.19). |
| 757 | * @param string|bool $component Component to which the feature belongs. |
| 758 | * If false, it is assumed the function is in MediaWiki core (Added in 1.19). |
| 759 | * @param int $callerOffset How far up the call stack is the original |
| 760 | * caller. 2 = function that called the function that called |
| 761 | * wfDeprecated (Added in 1.20). |
| 762 | * @throws InvalidArgumentException If the MediaWiki version |
| 763 | * number specified by $version is neither a string nor false. |
| 764 | */ |
| 765 | function wfDeprecated( $function, $version = false, $component = false, $callerOffset = 2 ) { |
| 766 | if ( !is_string( $version ) && $version !== false ) { |
| 767 | throw new InvalidArgumentException( |
| 768 | "MediaWiki version must either be a string or false. " . |
| 769 | "Example valid version: '1.33'" |
| 770 | ); |
| 771 | } |
| 772 | |
| 773 | MWDebug::deprecated( $function, $version, $component, $callerOffset + 1 ); |
| 774 | } |
| 775 | |
| 776 | /** |
| 777 | * Log a deprecation warning with arbitrary message text. A caller |
| 778 | * description will be appended. If the message has already been sent for |
| 779 | * this caller, it won't be sent again. |
| 780 | * |
| 781 | * Although there are component and version parameters, they are not |
| 782 | * automatically appended to the message. The message text should include |
| 783 | * information about when the thing was deprecated. The component and version |
| 784 | * are just used to implement $wgDeprecationReleaseLimit. |
| 785 | * |
| 786 | * @since 1.35 |
| 787 | * @param string $msg The message |
| 788 | * @param string|false $version Version of MediaWiki that the function |
| 789 | * was deprecated in. |
| 790 | * @param string|bool $component Component to which the function belongs. |
| 791 | * If false, it is assumed the function is in MediaWiki core. |
| 792 | * @param int|false $callerOffset How far up the call stack is the original |
| 793 | * caller. 2 = function that called the function that called us. If false, |
| 794 | * the caller description will not be appended. |
| 795 | */ |
| 796 | function wfDeprecatedMsg( $msg, $version = false, $component = false, $callerOffset = 2 ) { |
| 797 | MWDebug::deprecatedMsg( $msg, $version, $component, |
| 798 | $callerOffset === false ? false : $callerOffset + 1 ); |
| 799 | } |
| 800 | |
| 801 | /** |
| 802 | * Send a warning either to the debug log or in a PHP error depending on |
| 803 | * $wgDevelopmentWarnings. To log warnings in production, use wfLogWarning() instead. |
| 804 | * |
| 805 | * @param string $msg Message to send |
| 806 | * @param int $callerOffset Number of items to go back in the backtrace to |
| 807 | * find the correct caller (1 = function calling wfWarn, ...) |
| 808 | * @param int $level PHP error level; defaults to E_USER_NOTICE; |
| 809 | * only used when $wgDevelopmentWarnings is true |
| 810 | */ |
| 811 | function wfWarn( $msg, $callerOffset = 1, $level = E_USER_NOTICE ) { |
| 812 | MWDebug::warning( $msg, $callerOffset + 1, $level, 'auto' ); |
| 813 | } |
| 814 | |
| 815 | /** |
| 816 | * Send a warning as a PHP error and the debug log. This is intended for logging |
| 817 | * warnings in production. For logging development warnings, use WfWarn instead. |
| 818 | * |
| 819 | * @param string $msg Message to send |
| 820 | * @param int $callerOffset Number of items to go back in the backtrace to |
| 821 | * find the correct caller (1 = function calling wfLogWarning, ...) |
| 822 | * @param int $level PHP error level; defaults to E_USER_WARNING |
| 823 | */ |
| 824 | function wfLogWarning( $msg, $callerOffset = 1, $level = E_USER_WARNING ) { |
| 825 | MWDebug::warning( $msg, $callerOffset + 1, $level, 'production' ); |
| 826 | } |
| 827 | |
| 828 | /** |
| 829 | * Return a Language object from $langcode |
| 830 | * |
| 831 | * @deprecated since 1.41, use MediaWiki\Languages\LanguageFactory::getLanguage instead. |
| 832 | * @param Language|string|bool $langcode Either: |
| 833 | * - a Language object |
| 834 | * - code of the language to get the message for, if it is |
| 835 | * a valid code create a language for that language, if |
| 836 | * it is a string but not a valid code then make a basic |
| 837 | * language object |
| 838 | * - a boolean: if it's false then use the global object for |
| 839 | * the current user's language (as a fallback for the old parameter |
| 840 | * functionality), or if it is true then use global object |
| 841 | * for the wiki's content language. |
| 842 | * @return Language|StubUserLang |
| 843 | */ |
| 844 | function wfGetLangObj( $langcode = false ) { |
| 845 | wfDeprecated( __FUNCTION__, '1.41' ); |
| 846 | # Identify which language to get or create a language object for. |
| 847 | # Using is_object here due to Stub objects. |
| 848 | if ( is_object( $langcode ) ) { |
| 849 | # Great, we already have the object (hopefully)! |
| 850 | return $langcode; |
| 851 | } |
| 852 | |
| 853 | global $wgLanguageCode; |
| 854 | $services = MediaWikiServices::getInstance(); |
| 855 | if ( $langcode === true || $langcode === $wgLanguageCode ) { |
| 856 | # $langcode is the language code of the wikis content language object. |
| 857 | # or it is a boolean and value is true |
| 858 | return $services->getContentLanguage(); |
| 859 | } |
| 860 | |
| 861 | global $wgLang; |
| 862 | if ( $langcode === false || $langcode === $wgLang->getCode() ) { |
| 863 | # $langcode is the language code of user language object. |
| 864 | # or it was a boolean and value is false |
| 865 | return $wgLang; |
| 866 | } |
| 867 | |
| 868 | $languageNames = $services->getLanguageNameUtils()->getLanguageNames(); |
| 869 | // FIXME: Can we use isSupportedLanguage here? |
| 870 | if ( isset( $languageNames[$langcode] ) ) { |
| 871 | # $langcode corresponds to a valid language. |
| 872 | return $services->getLanguageFactory()->getLanguage( $langcode ); |
| 873 | } |
| 874 | |
| 875 | # $langcode is a string, but not a valid language code; use content language. |
| 876 | wfDebug( "Invalid language code passed to wfGetLangObj, falling back to content language." ); |
| 877 | return $services->getContentLanguage(); |
| 878 | } |
| 879 | |
| 880 | /** |
| 881 | * This is the function for getting translated interface messages. |
| 882 | * |
| 883 | * @see Message class for documentation how to use them. |
| 884 | * @see https://www.mediawiki.org/wiki/Manual:Messages_API |
| 885 | * |
| 886 | * This function replaces all old wfMsg* functions. |
| 887 | * |
| 888 | * When the MessageSpecifier object is an instance of Message, a clone of the object is returned. |
| 889 | * This is unlike the `new Message( … )` constructor, which returns a new object constructed from |
| 890 | * scratch with the same key. This difference is mostly relevant when the passed object is an |
| 891 | * instance of a subclass like RawMessage or ApiMessage. |
| 892 | * |
| 893 | * @param string|string[]|MessageSpecifier $key Message key, or array of keys, or a MessageSpecifier |
| 894 | * @param mixed ...$params Normal message parameters |
| 895 | * @return Message |
| 896 | * |
| 897 | * @since 1.17 |
| 898 | * |
| 899 | * @see Message::__construct |
| 900 | */ |
| 901 | function wfMessage( $key, ...$params ) { |
| 902 | if ( is_array( $key ) ) { |
| 903 | // Fallback keys are not allowed in message specifiers |
| 904 | $message = wfMessageFallback( ...$key ); |
| 905 | } else { |
| 906 | $message = Message::newFromSpecifier( $key ); |
| 907 | } |
| 908 | |
| 909 | // We call Message::params() to reduce code duplication |
| 910 | if ( $params ) { |
| 911 | $message->params( ...$params ); |
| 912 | } |
| 913 | |
| 914 | return $message; |
| 915 | } |
| 916 | |
| 917 | /** |
| 918 | * This function accepts multiple message keys and returns a message instance |
| 919 | * for the first message which is non-empty. If all messages are empty then an |
| 920 | * instance of the last message key is returned. |
| 921 | * |
| 922 | * @param string ...$keys Message keys |
| 923 | * @return Message |
| 924 | * |
| 925 | * @since 1.18 |
| 926 | * |
| 927 | * @see Message::newFallbackSequence |
| 928 | */ |
| 929 | function wfMessageFallback( ...$keys ) { |
| 930 | return Message::newFallbackSequence( ...$keys ); |
| 931 | } |
| 932 | |
| 933 | /** |
| 934 | * Replace message parameter keys on the given formatted output. |
| 935 | * |
| 936 | * @param string $message |
| 937 | * @param array $args |
| 938 | * @return string |
| 939 | * @internal |
| 940 | */ |
| 941 | function wfMsgReplaceArgs( $message, $args ) { |
| 942 | # Fix windows line-endings |
| 943 | # Some messages are split with explode("\n", $msg) |
| 944 | $message = str_replace( "\r", '', $message ); |
| 945 | |
| 946 | // Replace arguments |
| 947 | if ( is_array( $args ) && $args ) { |
| 948 | if ( is_array( $args[0] ) ) { |
| 949 | $args = array_values( $args[0] ); |
| 950 | } |
| 951 | $replacementKeys = []; |
| 952 | foreach ( $args as $n => $param ) { |
| 953 | $replacementKeys['$' . ( $n + 1 )] = $param; |
| 954 | } |
| 955 | $message = strtr( $message, $replacementKeys ); |
| 956 | } |
| 957 | |
| 958 | return $message; |
| 959 | } |
| 960 | |
| 961 | /** |
| 962 | * Get host name of the current machine, for use in error reporting. |
| 963 | * |
| 964 | * This helps to know which machine in a data center generated the |
| 965 | * current page. |
| 966 | * |
| 967 | * @return string |
| 968 | */ |
| 969 | function wfHostname() { |
| 970 | // Hostname overriding |
| 971 | global $wgOverrideHostname; |
| 972 | if ( $wgOverrideHostname !== false ) { |
| 973 | return $wgOverrideHostname; |
| 974 | } |
| 975 | |
| 976 | return php_uname( 'n' ) ?: 'unknown'; |
| 977 | } |
| 978 | |
| 979 | /** |
| 980 | * Safety wrapper for debug_backtrace(). |
| 981 | * |
| 982 | * Will return an empty array if debug_backtrace is disabled, otherwise |
| 983 | * the output from debug_backtrace() (trimmed). |
| 984 | * |
| 985 | * @param int $limit This parameter can be used to limit the number of stack frames returned |
| 986 | * |
| 987 | * @return array Array of backtrace information |
| 988 | */ |
| 989 | function wfDebugBacktrace( $limit = 0 ) { |
| 990 | static $disabled = null; |
| 991 | |
| 992 | if ( $disabled === null ) { |
| 993 | $disabled = !function_exists( 'debug_backtrace' ); |
| 994 | if ( $disabled ) { |
| 995 | wfDebug( "debug_backtrace() is disabled" ); |
| 996 | } |
| 997 | } |
| 998 | if ( $disabled ) { |
| 999 | return []; |
| 1000 | } |
| 1001 | |
| 1002 | if ( $limit ) { |
| 1003 | return array_slice( debug_backtrace( DEBUG_BACKTRACE_PROVIDE_OBJECT, $limit + 1 ), 1 ); |
| 1004 | } else { |
| 1005 | return array_slice( debug_backtrace(), 1 ); |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | /** |
| 1010 | * Get a debug backtrace as a string |
| 1011 | * |
| 1012 | * @param bool|null $raw If true, the return value is plain text. If false, HTML. |
| 1013 | * Defaults to true if MW_ENTRY_POINT is 'cli', otherwise false. |
| 1014 | * @return string |
| 1015 | * @since 1.25 Supports $raw parameter. |
| 1016 | */ |
| 1017 | function wfBacktrace( $raw = null ) { |
| 1018 | $raw ??= MW_ENTRY_POINT === 'cli'; |
| 1019 | if ( $raw ) { |
| 1020 | $frameFormat = "%s line %s calls %s()\n"; |
| 1021 | $traceFormat = "%s"; |
| 1022 | } else { |
| 1023 | $frameFormat = "<li>%s line %s calls %s()</li>\n"; |
| 1024 | $traceFormat = "<ul>\n%s</ul>\n"; |
| 1025 | } |
| 1026 | |
| 1027 | $frames = array_map( static function ( $frame ) use ( $frameFormat ) { |
| 1028 | $file = !empty( $frame['file'] ) ? basename( $frame['file'] ) : '-'; |
| 1029 | $line = $frame['line'] ?? '-'; |
| 1030 | $call = $frame['function']; |
| 1031 | if ( !empty( $frame['class'] ) ) { |
| 1032 | $call = $frame['class'] . $frame['type'] . $call; |
| 1033 | } |
| 1034 | return sprintf( $frameFormat, $file, $line, $call ); |
| 1035 | }, wfDebugBacktrace() ); |
| 1036 | |
| 1037 | return sprintf( $traceFormat, implode( '', $frames ) ); |
| 1038 | } |
| 1039 | |
| 1040 | /** |
| 1041 | * Get the name of the function which called this function |
| 1042 | * wfGetCaller( 1 ) is the function with the wfGetCaller() call (ie. __FUNCTION__) |
| 1043 | * wfGetCaller( 2 ) [default] is the caller of the function running wfGetCaller() |
| 1044 | * wfGetCaller( 3 ) is the parent of that. |
| 1045 | * |
| 1046 | * @param int $level |
| 1047 | * @return string |
| 1048 | */ |
| 1049 | function wfGetCaller( $level = 2 ) { |
| 1050 | $backtrace = wfDebugBacktrace( $level + 1 ); |
| 1051 | if ( isset( $backtrace[$level] ) ) { |
| 1052 | return wfFormatStackFrame( $backtrace[$level] ); |
| 1053 | } else { |
| 1054 | return 'unknown'; |
| 1055 | } |
| 1056 | } |
| 1057 | |
| 1058 | /** |
| 1059 | * Return a string consisting of callers in the stack. Useful sometimes |
| 1060 | * for profiling specific points. |
| 1061 | * |
| 1062 | * @param int|false $limit The maximum depth of the stack frame to return, or false for the entire stack. |
| 1063 | * @return string |
| 1064 | */ |
| 1065 | function wfGetAllCallers( $limit = 3 ) { |
| 1066 | $trace = array_reverse( wfDebugBacktrace() ); |
| 1067 | if ( !$limit || $limit > count( $trace ) - 1 ) { |
| 1068 | $limit = count( $trace ) - 1; |
| 1069 | } |
| 1070 | $trace = array_slice( $trace, -$limit - 1, $limit ); |
| 1071 | return implode( '/', array_map( 'wfFormatStackFrame', $trace ) ); |
| 1072 | } |
| 1073 | |
| 1074 | /** |
| 1075 | * Return a string representation of frame |
| 1076 | * |
| 1077 | * @param array $frame |
| 1078 | * @return string |
| 1079 | */ |
| 1080 | function wfFormatStackFrame( $frame ) { |
| 1081 | if ( !isset( $frame['function'] ) ) { |
| 1082 | return 'NO_FUNCTION_GIVEN'; |
| 1083 | } |
| 1084 | return isset( $frame['class'] ) && isset( $frame['type'] ) ? |
| 1085 | $frame['class'] . $frame['type'] . $frame['function'] : |
| 1086 | $frame['function']; |
| 1087 | } |
| 1088 | |
| 1089 | /** |
| 1090 | * Whether the client accept gzip encoding |
| 1091 | * |
| 1092 | * Uses the Accept-Encoding header to check if the client supports gzip encoding. |
| 1093 | * Use this when considering to send a gzip-encoded response to the client. |
| 1094 | * |
| 1095 | * @param bool $force Forces another check even if we already have a cached result. |
| 1096 | * @return bool |
| 1097 | */ |
| 1098 | function wfClientAcceptsGzip( $force = false ) { |
| 1099 | static $result = null; |
| 1100 | if ( $result === null || $force ) { |
| 1101 | $result = false; |
| 1102 | if ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) { |
| 1103 | # @todo FIXME: We may want to disallow some broken browsers |
| 1104 | $m = []; |
| 1105 | if ( preg_match( |
| 1106 | '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/', |
| 1107 | $_SERVER['HTTP_ACCEPT_ENCODING'], |
| 1108 | $m |
| 1109 | ) |
| 1110 | ) { |
| 1111 | if ( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) { |
| 1112 | return $result; |
| 1113 | } |
| 1114 | wfDebug( "wfClientAcceptsGzip: client accepts gzip." ); |
| 1115 | $result = true; |
| 1116 | } |
| 1117 | } |
| 1118 | } |
| 1119 | return $result; |
| 1120 | } |
| 1121 | |
| 1122 | /** |
| 1123 | * Escapes the given text so that it may be output using addWikiText() |
| 1124 | * without any linking, formatting, etc. making its way through. This |
| 1125 | * is achieved by substituting certain characters with HTML entities. |
| 1126 | * As required by the callers, "<nowiki>" is not used. |
| 1127 | * |
| 1128 | * @param string|null|false $input Text to be escaped |
| 1129 | * @param-taint $input escapes_html |
| 1130 | * @return string |
| 1131 | */ |
| 1132 | function wfEscapeWikiText( $input ): string { |
| 1133 | global $wgEnableMagicLinks; |
| 1134 | static $repl = null, $repl2 = null, $repl3 = null, $repl4 = null; |
| 1135 | if ( $repl === null || defined( 'MW_PARSER_TEST' ) || defined( 'MW_PHPUNIT_TEST' ) ) { |
| 1136 | // Tests depend upon being able to change $wgEnableMagicLinks, so don't cache |
| 1137 | // in those situations |
| 1138 | $repl = [ |
| 1139 | '"' => '"', '&' => '&', "'" => ''', '<' => '<', |
| 1140 | '=' => '=', '>' => '>', '[' => '[', ']' => ']', |
| 1141 | '{' => '{', '|' => '|', '}' => '}', |
| 1142 | ';' => ';', // a token inside language converter brackets |
| 1143 | '!!' => '!!', // a token inside table context |
| 1144 | "\n!" => "\n!", "\r!" => "\r!", // a token inside table context |
| 1145 | "\n#" => "\n#", "\r#" => "\r#", |
| 1146 | "\n*" => "\n*", "\r*" => "\r*", |
| 1147 | "\n:" => "\n:", "\r:" => "\r:", |
| 1148 | "\n " => "\n ", "\r " => "\r ", |
| 1149 | "\n\n" => "\n ", "\r\n" => " \n", |
| 1150 | "\n\r" => "\n ", "\r\r" => "\r ", |
| 1151 | "\n\t" => "\n	", "\r\t" => "\r	", // "\n\t\n" is treated like "\n\n" |
| 1152 | "\n----" => "\n----", "\r----" => "\r----", |
| 1153 | '__' => '__', '://' => '://', |
| 1154 | '~~~' => '~~~', // protect from PST, just to be safe(r) |
| 1155 | ]; |
| 1156 | |
| 1157 | $magicLinks = array_keys( array_filter( $wgEnableMagicLinks ) ); |
| 1158 | // We have to catch everything "\s" matches in PCRE |
| 1159 | foreach ( $magicLinks as $magic ) { |
| 1160 | $repl["$magic "] = "$magic "; |
| 1161 | $repl["$magic\t"] = "$magic	"; |
| 1162 | $repl["$magic\r"] = "$magic "; |
| 1163 | $repl["$magic\n"] = "$magic "; |
| 1164 | $repl["$magic\f"] = "$magic"; |
| 1165 | } |
| 1166 | // Additionally escape the following characters at the beginning of the |
| 1167 | // string, in case they merge to form tokens when spliced into a |
| 1168 | // string. Tokens like -{ {{ [[ {| etc are already escaped because |
| 1169 | // the second character is escaped above, but the following tokens |
| 1170 | // are handled here: |+ |- __FOO__ ~~~ |
| 1171 | $repl3 = [ |
| 1172 | '+' => '+', '-' => '-', '_' => '_', '~' => '~', |
| 1173 | ]; |
| 1174 | // Similarly, protect the following characters at the end of the |
| 1175 | // string, which could turn form the start of `__FOO__` or `~~~~` |
| 1176 | // A trailing newline could also form the unintended start of a |
| 1177 | // paragraph break if it is glued to a newline in the following |
| 1178 | // context. |
| 1179 | $repl4 = [ |
| 1180 | '_' => '_', '~' => '~', |
| 1181 | "\n" => " ", "\r" => " ", |
| 1182 | "\t" => "	", // "\n\t\n" is treated like "\n\n" |
| 1183 | ]; |
| 1184 | |
| 1185 | // And handle protocols that don't use "://" |
| 1186 | global $wgUrlProtocols; |
| 1187 | $repl2 = []; |
| 1188 | foreach ( $wgUrlProtocols as $prot ) { |
| 1189 | if ( substr( $prot, -1 ) === ':' ) { |
| 1190 | $repl2[] = preg_quote( substr( $prot, 0, -1 ), '/' ); |
| 1191 | } |
| 1192 | } |
| 1193 | $repl2 = $repl2 ? '/\b(' . implode( '|', $repl2 ) . '):/i' : '/^(?!)/'; |
| 1194 | } |
| 1195 | // Tell phan that $repl2, $repl3 and $repl4 will also be non-null here |
| 1196 | '@phan-var string $repl2'; |
| 1197 | '@phan-var string $repl3'; |
| 1198 | '@phan-var string $repl4'; |
| 1199 | // This will also stringify input in case it's not a string |
| 1200 | $text = substr( strtr( "\n$input", $repl ), 1 ); |
| 1201 | if ( $text === '' ) { |
| 1202 | return $text; |
| 1203 | } |
| 1204 | $first = strtr( $text[0], $repl3 ); // protect first character |
| 1205 | if ( strlen( $text ) > 1 ) { |
| 1206 | $text = $first . substr( $text, 1, -1 ) . |
| 1207 | strtr( substr( $text, -1 ), $repl4 ); // protect last character |
| 1208 | } else { |
| 1209 | // special case for single-character strings |
| 1210 | $text = strtr( $first, $repl4 ); // protect last character |
| 1211 | } |
| 1212 | $text = preg_replace( $repl2, '$1:', $text ); |
| 1213 | return $text; |
| 1214 | } |
| 1215 | |
| 1216 | /** |
| 1217 | * Sets dest to source and returns the original value of dest |
| 1218 | * If source is NULL, it just returns the value, it doesn't set the variable |
| 1219 | * If force is true, it will set the value even if source is NULL |
| 1220 | * |
| 1221 | * @param mixed &$dest |
| 1222 | * @param mixed $source |
| 1223 | * @param bool $force |
| 1224 | * @return mixed |
| 1225 | */ |
| 1226 | function wfSetVar( &$dest, $source, $force = false ) { |
| 1227 | $temp = $dest; |
| 1228 | if ( $source !== null || $force ) { |
| 1229 | $dest = $source; |
| 1230 | } |
| 1231 | return $temp; |
| 1232 | } |
| 1233 | |
| 1234 | /** |
| 1235 | * As for wfSetVar except setting a bit |
| 1236 | * |
| 1237 | * @param int &$dest |
| 1238 | * @param int $bit |
| 1239 | * @param bool $state |
| 1240 | * |
| 1241 | * @return bool |
| 1242 | */ |
| 1243 | function wfSetBit( &$dest, $bit, $state = true ) { |
| 1244 | $temp = (bool)( $dest & $bit ); |
| 1245 | if ( $state !== null ) { |
| 1246 | if ( $state ) { |
| 1247 | $dest |= $bit; |
| 1248 | } else { |
| 1249 | $dest &= ~$bit; |
| 1250 | } |
| 1251 | } |
| 1252 | return $temp; |
| 1253 | } |
| 1254 | |
| 1255 | /** |
| 1256 | * A wrapper around the PHP function var_export(). |
| 1257 | * Either print it or add it to the regular output ($wgOut). |
| 1258 | * |
| 1259 | * @param mixed $var A PHP variable to dump. |
| 1260 | */ |
| 1261 | function wfVarDump( $var ) { |
| 1262 | global $wgOut; |
| 1263 | $s = str_replace( "\n", "<br />\n", var_export( $var, true ) . "\n" ); |
| 1264 | if ( headers_sent() || !isset( $wgOut ) || !is_object( $wgOut ) ) { |
| 1265 | print $s; |
| 1266 | } else { |
| 1267 | $wgOut->addHTML( $s ); |
| 1268 | } |
| 1269 | } |
| 1270 | |
| 1271 | /** |
| 1272 | * Provide a simple HTTP error. |
| 1273 | * |
| 1274 | * @param int|string $code |
| 1275 | * @param string $label |
| 1276 | * @param string $desc |
| 1277 | */ |
| 1278 | function wfHttpError( $code, $label, $desc ) { |
| 1279 | global $wgOut; |
| 1280 | HttpStatus::header( $code ); |
| 1281 | if ( $wgOut ) { |
| 1282 | $wgOut->disable(); |
| 1283 | $wgOut->sendCacheControl(); |
| 1284 | } |
| 1285 | |
| 1286 | \MediaWiki\Request\HeaderCallback::warnIfHeadersSent(); |
| 1287 | header( 'Content-type: text/html; charset=utf-8' ); |
| 1288 | ob_start(); |
| 1289 | print '<!DOCTYPE html>' . |
| 1290 | '<html><head><title>' . |
| 1291 | htmlspecialchars( $label ) . |
| 1292 | '</title></head><body><h1>' . |
| 1293 | htmlspecialchars( $label ) . |
| 1294 | '</h1><p>' . |
| 1295 | nl2br( htmlspecialchars( $desc ) ) . |
| 1296 | "</p></body></html>\n"; |
| 1297 | header( 'Content-Length: ' . ob_get_length() ); |
| 1298 | ob_end_flush(); |
| 1299 | } |
| 1300 | |
| 1301 | /** |
| 1302 | * Clear away any user-level output buffers, discarding contents. |
| 1303 | * |
| 1304 | * Suitable for 'starting afresh', for instance when streaming |
| 1305 | * relatively large amounts of data without buffering, or wanting to |
| 1306 | * output image files without ob_gzhandler's compression. |
| 1307 | * |
| 1308 | * The optional $resetGzipEncoding parameter controls suppression of |
| 1309 | * the Content-Encoding header sent by ob_gzhandler; by default it |
| 1310 | * is left. This should be used for HTTP 304 responses, where you need to |
| 1311 | * preserve the Content-Encoding header of the real result, but |
| 1312 | * also need to suppress the output of ob_gzhandler to keep to spec |
| 1313 | * and avoid breaking Firefox in rare cases where the headers and |
| 1314 | * body are broken over two packets. |
| 1315 | * |
| 1316 | * Note that some PHP configuration options may add output buffer |
| 1317 | * layers which cannot be removed; these are left in place. |
| 1318 | * |
| 1319 | * @param bool $resetGzipEncoding |
| 1320 | */ |
| 1321 | function wfResetOutputBuffers( $resetGzipEncoding = true ) { |
| 1322 | while ( $status = ob_get_status() ) { |
| 1323 | if ( isset( $status['flags'] ) ) { |
| 1324 | $flags = PHP_OUTPUT_HANDLER_CLEANABLE | PHP_OUTPUT_HANDLER_REMOVABLE; |
| 1325 | $deleteable = ( $status['flags'] & $flags ) === $flags; |
| 1326 | } elseif ( isset( $status['del'] ) ) { |
| 1327 | $deleteable = $status['del']; |
| 1328 | } else { |
| 1329 | // Guess that any PHP-internal setting can't be removed. |
| 1330 | $deleteable = $status['type'] !== 0; /* PHP_OUTPUT_HANDLER_INTERNAL */ |
| 1331 | } |
| 1332 | if ( !$deleteable ) { |
| 1333 | // Give up, and hope the result doesn't break |
| 1334 | // output behavior. |
| 1335 | break; |
| 1336 | } |
| 1337 | if ( $status['name'] === 'MediaWikiIntegrationTestCase::wfResetOutputBuffersBarrier' ) { |
| 1338 | // Unit testing barrier to prevent this function from breaking PHPUnit. |
| 1339 | break; |
| 1340 | } |
| 1341 | if ( !ob_end_clean() ) { |
| 1342 | // Could not remove output buffer handler; abort now |
| 1343 | // to avoid getting in some kind of infinite loop. |
| 1344 | break; |
| 1345 | } |
| 1346 | if ( $resetGzipEncoding && $status['name'] == 'ob_gzhandler' ) { |
| 1347 | // Reset the 'Content-Encoding' field set by this handler |
| 1348 | // so we can start fresh. |
| 1349 | header_remove( 'Content-Encoding' ); |
| 1350 | break; |
| 1351 | } |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | /** |
| 1356 | * Get a timestamp string in one of various formats |
| 1357 | * |
| 1358 | * @param mixed $outputtype Output format, one of the TS_* constants. Defaults to |
| 1359 | * Unix timestamp. |
| 1360 | * @param mixed $ts A timestamp in any supported format. The |
| 1361 | * function will autodetect which format is supplied and act accordingly. Use 0 or |
| 1362 | * omit to use current time |
| 1363 | * @return string|false The date in the specified format, or false on error. |
| 1364 | */ |
| 1365 | function wfTimestamp( $outputtype = TS_UNIX, $ts = 0 ) { |
| 1366 | $ret = MWTimestamp::convert( $outputtype, $ts ); |
| 1367 | if ( $ret === false ) { |
| 1368 | wfDebug( "wfTimestamp() fed bogus time value: TYPE=$outputtype; VALUE=$ts" ); |
| 1369 | } |
| 1370 | return $ret; |
| 1371 | } |
| 1372 | |
| 1373 | /** |
| 1374 | * Return a formatted timestamp, or null if input is null. |
| 1375 | * For dealing with nullable timestamp columns in the database. |
| 1376 | * |
| 1377 | * @param mixed $outputtype |
| 1378 | * @param mixed|null $ts |
| 1379 | * @return string|false|null Null if called with null, otherwise the result of wfTimestamp() |
| 1380 | */ |
| 1381 | function wfTimestampOrNull( $outputtype = TS_UNIX, $ts = null ) { |
| 1382 | if ( $ts === null ) { |
| 1383 | return null; |
| 1384 | } else { |
| 1385 | return wfTimestamp( $outputtype, $ts ); |
| 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | /** |
| 1390 | * Convenience function; returns MediaWiki timestamp for the present time. |
| 1391 | * |
| 1392 | * @return string TS_MW timestamp |
| 1393 | */ |
| 1394 | function wfTimestampNow() { |
| 1395 | return MWTimestamp::now( TS_MW ); |
| 1396 | } |
| 1397 | |
| 1398 | /** |
| 1399 | * Tries to get the system directory for temporary files. First |
| 1400 | * $wgTmpDirectory is checked, and then the TMPDIR, TMP, and TEMP |
| 1401 | * environment variables are then checked in sequence, then |
| 1402 | * sys_get_temp_dir(), then upload_tmp_dir from php.ini. |
| 1403 | * |
| 1404 | * NOTE: When possible, use instead the tmpfile() function to create |
| 1405 | * temporary files to avoid race conditions on file creation, etc. |
| 1406 | * |
| 1407 | * @return string |
| 1408 | */ |
| 1409 | function wfTempDir() { |
| 1410 | global $wgTmpDirectory; |
| 1411 | |
| 1412 | if ( $wgTmpDirectory !== false ) { |
| 1413 | return $wgTmpDirectory; |
| 1414 | } |
| 1415 | |
| 1416 | return TempFSFile::getUsableTempDirectory(); |
| 1417 | } |
| 1418 | |
| 1419 | /** |
| 1420 | * Make directory, and make all parent directories if they don't exist |
| 1421 | * |
| 1422 | * @param string $dir Full path to directory to create. Callers should make sure this is not a storage path. |
| 1423 | * @param int|null $mode Chmod value to use, default is $wgDirectoryMode |
| 1424 | * @param string|null $caller Optional caller param for debugging. |
| 1425 | * @return bool |
| 1426 | */ |
| 1427 | function wfMkdirParents( $dir, $mode = null, $caller = null ) { |
| 1428 | global $wgDirectoryMode; |
| 1429 | |
| 1430 | if ( FileBackend::isStoragePath( $dir ) ) { |
| 1431 | throw new LogicException( __FUNCTION__ . " given storage path '$dir'." ); |
| 1432 | } |
| 1433 | if ( $caller !== null ) { |
| 1434 | wfDebug( "$caller: called wfMkdirParents($dir)" ); |
| 1435 | } |
| 1436 | if ( strval( $dir ) === '' ) { |
| 1437 | return true; |
| 1438 | } |
| 1439 | |
| 1440 | $dir = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $dir ); |
| 1441 | $mode ??= $wgDirectoryMode; |
| 1442 | |
| 1443 | // Turn off the normal warning, we're doing our own below |
| 1444 | // PHP doesn't include the path in its warning message, so we add our own to aid in diagnosis. |
| 1445 | // |
| 1446 | // Repeat existence check if creation failed so that we silently recover in case of |
| 1447 | // a race condition where another request created it since the first check. |
| 1448 | // |
| 1449 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 1450 | $ok = is_dir( $dir ) || @mkdir( $dir, $mode, true ) || is_dir( $dir ); |
| 1451 | if ( !$ok ) { |
| 1452 | trigger_error( sprintf( "failed to mkdir \"%s\" mode 0%o", $dir, $mode ), E_USER_WARNING ); |
| 1453 | } |
| 1454 | |
| 1455 | return $ok; |
| 1456 | } |
| 1457 | |
| 1458 | /** |
| 1459 | * Remove a directory and all its content. |
| 1460 | * Does not hide error. |
| 1461 | * @param string $dir |
| 1462 | */ |
| 1463 | function wfRecursiveRemoveDir( $dir ) { |
| 1464 | // taken from https://www.php.net/manual/en/function.rmdir.php#98622 |
| 1465 | if ( is_dir( $dir ) ) { |
| 1466 | $objects = scandir( $dir ); |
| 1467 | foreach ( $objects as $object ) { |
| 1468 | if ( $object != "." && $object != ".." ) { |
| 1469 | if ( filetype( $dir . '/' . $object ) == "dir" ) { |
| 1470 | wfRecursiveRemoveDir( $dir . '/' . $object ); |
| 1471 | } else { |
| 1472 | unlink( $dir . '/' . $object ); |
| 1473 | } |
| 1474 | } |
| 1475 | } |
| 1476 | rmdir( $dir ); |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | /** |
| 1481 | * @param float|int $nr The number to format |
| 1482 | * @param int $acc The number of digits after the decimal point, default 2 |
| 1483 | * @param bool $round Whether or not to round the value, default true |
| 1484 | * @return string |
| 1485 | */ |
| 1486 | function wfPercent( $nr, int $acc = 2, bool $round = true ) { |
| 1487 | $accForFormat = $acc >= 0 ? $acc : 0; |
| 1488 | $ret = sprintf( "%.{$accForFormat}f", $nr ); |
| 1489 | return $round ? round( (float)$ret, $acc ) . '%' : "$ret%"; |
| 1490 | } |
| 1491 | |
| 1492 | /** |
| 1493 | * Safety wrapper around ini_get() for boolean settings. |
| 1494 | * The values returned from ini_get() are pre-normalized for settings |
| 1495 | * set via php.ini or php_flag/php_admin_flag... but *not* |
| 1496 | * for those set via php_value/php_admin_value. |
| 1497 | * |
| 1498 | * It's fairly common for people to use php_value instead of php_flag, |
| 1499 | * which can leave you with an 'off' setting giving a false positive |
| 1500 | * for code that just takes the ini_get() return value as a boolean. |
| 1501 | * |
| 1502 | * To make things extra interesting, setting via php_value accepts |
| 1503 | * "true" and "yes" as true, but php.ini and php_flag consider them false. :) |
| 1504 | * Unrecognized values go false... again opposite PHP's own coercion |
| 1505 | * from string to bool. |
| 1506 | * |
| 1507 | * Luckily, 'properly' set settings will always come back as '0' or '1', |
| 1508 | * so we only have to worry about them and the 'improper' settings. |
| 1509 | * |
| 1510 | * I frickin' hate PHP... :P |
| 1511 | * |
| 1512 | * @param string $setting |
| 1513 | * @return bool |
| 1514 | */ |
| 1515 | function wfIniGetBool( $setting ) { |
| 1516 | return wfStringToBool( ini_get( $setting ) ); |
| 1517 | } |
| 1518 | |
| 1519 | /** |
| 1520 | * Convert string value to boolean, when the following are interpreted as true: |
| 1521 | * - on |
| 1522 | * - true |
| 1523 | * - yes |
| 1524 | * - Any number, except 0 |
| 1525 | * All other strings are interpreted as false. |
| 1526 | * |
| 1527 | * @param string $val |
| 1528 | * @return bool |
| 1529 | * @since 1.31 |
| 1530 | */ |
| 1531 | function wfStringToBool( $val ) { |
| 1532 | $val = strtolower( $val ); |
| 1533 | // 'on' and 'true' can't have whitespace around them, but '1' can. |
| 1534 | return $val == 'on' |
| 1535 | || $val == 'true' |
| 1536 | || $val == 'yes' |
| 1537 | || preg_match( "/^\s*[+-]?0*[1-9]/", $val ); // approx C atoi() function |
| 1538 | } |
| 1539 | |
| 1540 | /** |
| 1541 | * Locale-independent version of escapeshellarg() |
| 1542 | * |
| 1543 | * Originally, this fixed the incorrect use of single quotes on Windows |
| 1544 | * (https://bugs.php.net/bug.php?id=26285) and the locale problems on Linux in |
| 1545 | * PHP 5.2.6+ (https://bugs.php.net/bug.php?id=54391). The second bug is still |
| 1546 | * open as of 2021. |
| 1547 | * |
| 1548 | * @param string|string[] ...$args strings to escape and glue together, |
| 1549 | * or a single array of strings parameter |
| 1550 | * @return string |
| 1551 | * @deprecated since 1.30 use MediaWiki\Shell\Shell::escape() |
| 1552 | */ |
| 1553 | function wfEscapeShellArg( ...$args ) { |
| 1554 | return Shell::escape( ...$args ); |
| 1555 | } |
| 1556 | |
| 1557 | /** |
| 1558 | * Execute a shell command, with time and memory limits mirrored from the PHP |
| 1559 | * configuration if supported. |
| 1560 | * |
| 1561 | * @param string|string[] $cmd If string, a properly shell-escaped command line, |
| 1562 | * or an array of unescaped arguments, in which case each value will be escaped |
| 1563 | * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'" |
| 1564 | * @param null|mixed &$retval Optional, will receive the program's exit code. |
| 1565 | * (non-zero is usually failure). If there is an error from |
| 1566 | * read, select, or proc_open(), this will be set to -1. |
| 1567 | * @param array $environ Optional environment variables which should be |
| 1568 | * added to the executed command environment. |
| 1569 | * @param array $limits Optional array with limits(filesize, memory, time, walltime) |
| 1570 | * this overwrites the global wgMaxShell* limits. |
| 1571 | * @param array $options Array of options: |
| 1572 | * - duplicateStderr: Set this to true to duplicate stderr to stdout, |
| 1573 | * including errors from limit.sh |
| 1574 | * - profileMethod: By default this function will profile based on the calling |
| 1575 | * method. Set this to a string for an alternative method to profile from |
| 1576 | * @phan-param array{duplicateStderr?:bool,profileMethod?:string} $options |
| 1577 | * |
| 1578 | * @return string Collected stdout as a string |
| 1579 | * @deprecated since 1.30 use class MediaWiki\Shell\Shell |
| 1580 | */ |
| 1581 | function wfShellExec( $cmd, &$retval = null, $environ = [], |
| 1582 | $limits = [], $options = [] |
| 1583 | ) { |
| 1584 | if ( Shell::isDisabled() ) { |
| 1585 | $retval = 1; |
| 1586 | // Backwards compatibility be upon us... |
| 1587 | return 'Unable to run external programs, proc_open() is disabled.'; |
| 1588 | } |
| 1589 | |
| 1590 | if ( is_array( $cmd ) ) { |
| 1591 | $cmd = Shell::escape( $cmd ); |
| 1592 | } |
| 1593 | |
| 1594 | $includeStderr = isset( $options['duplicateStderr'] ) && $options['duplicateStderr']; |
| 1595 | $profileMethod = $options['profileMethod'] ?? wfGetCaller(); |
| 1596 | |
| 1597 | try { |
| 1598 | $result = Shell::command( [] ) |
| 1599 | ->unsafeParams( (array)$cmd ) |
| 1600 | ->environment( $environ ) |
| 1601 | ->limits( $limits ) |
| 1602 | ->includeStderr( $includeStderr ) |
| 1603 | ->profileMethod( $profileMethod ) |
| 1604 | // For b/c |
| 1605 | ->restrict( Shell::RESTRICT_NONE ) |
| 1606 | ->execute(); |
| 1607 | } catch ( ProcOpenError $ex ) { |
| 1608 | $retval = -1; |
| 1609 | return ''; |
| 1610 | } |
| 1611 | |
| 1612 | $retval = $result->getExitCode(); |
| 1613 | |
| 1614 | return $result->getStdout(); |
| 1615 | } |
| 1616 | |
| 1617 | /** |
| 1618 | * Execute a shell command, returning both stdout and stderr. Convenience |
| 1619 | * function, as all the arguments to wfShellExec can become unwieldy. |
| 1620 | * |
| 1621 | * @note This also includes errors from limit.sh, e.g. if $wgMaxShellFileSize is exceeded. |
| 1622 | * @param string|string[] $cmd If string, a properly shell-escaped command line, |
| 1623 | * or an array of unescaped arguments, in which case each value will be escaped |
| 1624 | * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'" |
| 1625 | * @param null|mixed &$retval Optional, will receive the program's exit code. |
| 1626 | * (non-zero is usually failure) |
| 1627 | * @param array $environ Optional environment variables which should be |
| 1628 | * added to the executed command environment. |
| 1629 | * @param array $limits Optional array with limits(filesize, memory, time, walltime) |
| 1630 | * this overwrites the global wgMaxShell* limits. |
| 1631 | * @return string Collected stdout and stderr as a string |
| 1632 | * @deprecated since 1.30 use class MediaWiki\Shell\Shell |
| 1633 | */ |
| 1634 | function wfShellExecWithStderr( $cmd, &$retval = null, $environ = [], $limits = [] ) { |
| 1635 | return wfShellExec( $cmd, $retval, $environ, $limits, |
| 1636 | [ 'duplicateStderr' => true, 'profileMethod' => wfGetCaller() ] ); |
| 1637 | } |
| 1638 | |
| 1639 | /** |
| 1640 | * Generate a shell-escaped command line string to run a MediaWiki cli script. |
| 1641 | * Note that $parameters should be a flat array and an option with an argument |
| 1642 | * should consist of two consecutive items in the array (do not use "--option value"). |
| 1643 | * |
| 1644 | * @deprecated since 1.31, use Shell::makeScriptCommand() |
| 1645 | * |
| 1646 | * @param string $script MediaWiki cli script path |
| 1647 | * @param array $parameters Arguments and options to the script |
| 1648 | * @param array $options Associative array of options: |
| 1649 | * 'php': The path to the php executable |
| 1650 | * 'wrapper': Path to a PHP wrapper to handle the maintenance script |
| 1651 | * @phan-param array{php?:string,wrapper?:string} $options |
| 1652 | * @return string |
| 1653 | */ |
| 1654 | function wfShellWikiCmd( $script, array $parameters = [], array $options = [] ) { |
| 1655 | global $wgPhpCli; |
| 1656 | // Give site config file a chance to run the script in a wrapper. |
| 1657 | // The caller may likely want to call wfBasename() on $script. |
| 1658 | ( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) ) |
| 1659 | ->onWfShellWikiCmd( $script, $parameters, $options ); |
| 1660 | $cmd = [ $options['php'] ?? $wgPhpCli ]; |
| 1661 | if ( isset( $options['wrapper'] ) ) { |
| 1662 | $cmd[] = $options['wrapper']; |
| 1663 | } |
| 1664 | $cmd[] = $script; |
| 1665 | // Escape each parameter for shell |
| 1666 | return Shell::escape( array_merge( $cmd, $parameters ) ); |
| 1667 | } |
| 1668 | |
| 1669 | /** |
| 1670 | * wfMerge attempts to merge differences between three texts. |
| 1671 | * |
| 1672 | * @param string $old Common base revision |
| 1673 | * @param string $mine The edit we wish to store but which potentially conflicts with another edit |
| 1674 | * which happened since we started editing. |
| 1675 | * @param string $yours The most recent stored revision of the article. Note that "mine" and "yours" |
| 1676 | * might have another meaning depending on the specific use case. |
| 1677 | * @param string|null &$simplisticMergeAttempt Automatically merged text, with overlapping edits |
| 1678 | * falling back to "my" text. |
| 1679 | * @param string|null &$mergeLeftovers Optional out parameter containing an "ed" script with the |
| 1680 | * remaining bits of "your" text that could not be merged into $simplisticMergeAttempt. |
| 1681 | * The "ed" file format is documented here: |
| 1682 | * https://www.gnu.org/software/diffutils/manual/html_node/Detailed-ed.html |
| 1683 | * @return bool true for a clean merge and false for failure or a conflict. |
| 1684 | */ |
| 1685 | function wfMerge( |
| 1686 | string $old, |
| 1687 | string $mine, |
| 1688 | string $yours, |
| 1689 | ?string &$simplisticMergeAttempt, |
| 1690 | string &$mergeLeftovers = null |
| 1691 | ): bool { |
| 1692 | global $wgDiff3; |
| 1693 | |
| 1694 | # This check may also protect against code injection in |
| 1695 | # case of broken installations. |
| 1696 | AtEase::suppressWarnings(); |
| 1697 | $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 ); |
| 1698 | AtEase::restoreWarnings(); |
| 1699 | |
| 1700 | if ( !$haveDiff3 ) { |
| 1701 | wfDebug( "diff3 not found" ); |
| 1702 | return false; |
| 1703 | } |
| 1704 | |
| 1705 | # Make temporary files |
| 1706 | $td = wfTempDir(); |
| 1707 | $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' ); |
| 1708 | $mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' ); |
| 1709 | $yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' ); |
| 1710 | |
| 1711 | # NOTE: diff3 issues a warning to stderr if any of the files does not end with |
| 1712 | # a newline character. To avoid this, we normalize the trailing whitespace before |
| 1713 | # creating the diff. |
| 1714 | |
| 1715 | fwrite( $oldtextFile, rtrim( $old ) . "\n" ); |
| 1716 | fclose( $oldtextFile ); |
| 1717 | fwrite( $mytextFile, rtrim( $mine ) . "\n" ); |
| 1718 | fclose( $mytextFile ); |
| 1719 | fwrite( $yourtextFile, rtrim( $yours ) . "\n" ); |
| 1720 | fclose( $yourtextFile ); |
| 1721 | |
| 1722 | # Check for a conflict |
| 1723 | $cmd = Shell::escape( $wgDiff3, '--text', '--overlap-only', $mytextName, |
| 1724 | $oldtextName, $yourtextName ); |
| 1725 | $handle = popen( $cmd, 'r' ); |
| 1726 | |
| 1727 | $mergeLeftovers = ''; |
| 1728 | do { |
| 1729 | $data = fread( $handle, 8192 ); |
| 1730 | if ( strlen( $data ) == 0 ) { |
| 1731 | break; |
| 1732 | } |
| 1733 | $mergeLeftovers .= $data; |
| 1734 | } while ( true ); |
| 1735 | pclose( $handle ); |
| 1736 | |
| 1737 | $conflict = $mergeLeftovers !== ''; |
| 1738 | |
| 1739 | # Merge differences automatically where possible, preferring "my" text for conflicts. |
| 1740 | $cmd = Shell::escape( $wgDiff3, '--text', '--ed', '--merge', $mytextName, |
| 1741 | $oldtextName, $yourtextName ); |
| 1742 | $handle = popen( $cmd, 'r' ); |
| 1743 | $simplisticMergeAttempt = ''; |
| 1744 | do { |
| 1745 | $data = fread( $handle, 8192 ); |
| 1746 | if ( strlen( $data ) == 0 ) { |
| 1747 | break; |
| 1748 | } |
| 1749 | $simplisticMergeAttempt .= $data; |
| 1750 | } while ( true ); |
| 1751 | pclose( $handle ); |
| 1752 | unlink( $mytextName ); |
| 1753 | unlink( $oldtextName ); |
| 1754 | unlink( $yourtextName ); |
| 1755 | |
| 1756 | if ( $simplisticMergeAttempt === '' && $old !== '' && !$conflict ) { |
| 1757 | wfDebug( "Unexpected null result from diff3. Command: $cmd" ); |
| 1758 | $conflict = true; |
| 1759 | } |
| 1760 | return !$conflict; |
| 1761 | } |
| 1762 | |
| 1763 | /** |
| 1764 | * Return the final portion of a pathname. |
| 1765 | * Reimplemented because PHP5's "basename()" is buggy with multibyte text. |
| 1766 | * https://bugs.php.net/bug.php?id=33898 |
| 1767 | * |
| 1768 | * PHP's basename() only considers '\' a pathchar on Windows and Netware. |
| 1769 | * We'll consider it so always, as we don't want '\s' in our Unix paths either. |
| 1770 | * |
| 1771 | * @param string $path |
| 1772 | * @param string $suffix String to remove if present |
| 1773 | * @return string |
| 1774 | */ |
| 1775 | function wfBaseName( $path, $suffix = '' ) { |
| 1776 | if ( $suffix == '' ) { |
| 1777 | $encSuffix = ''; |
| 1778 | } else { |
| 1779 | $encSuffix = '(?:' . preg_quote( $suffix, '#' ) . ')?'; |
| 1780 | } |
| 1781 | |
| 1782 | $matches = []; |
| 1783 | if ( preg_match( "#([^/\\\\]*?){$encSuffix}[/\\\\]*$#", $path, $matches ) ) { |
| 1784 | return $matches[1]; |
| 1785 | } else { |
| 1786 | return ''; |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | /** |
| 1791 | * Generate a relative path name to the given file. |
| 1792 | * May explode on non-matching case-insensitive paths, |
| 1793 | * funky symlinks, etc. |
| 1794 | * |
| 1795 | * @param string $path Absolute destination path including target filename |
| 1796 | * @param string $from Absolute source path, directory only |
| 1797 | * @return string |
| 1798 | */ |
| 1799 | function wfRelativePath( $path, $from ) { |
| 1800 | // Normalize mixed input on Windows... |
| 1801 | $path = str_replace( '/', DIRECTORY_SEPARATOR, $path ); |
| 1802 | $from = str_replace( '/', DIRECTORY_SEPARATOR, $from ); |
| 1803 | |
| 1804 | // Trim trailing slashes -- fix for drive root |
| 1805 | $path = rtrim( $path, DIRECTORY_SEPARATOR ); |
| 1806 | $from = rtrim( $from, DIRECTORY_SEPARATOR ); |
| 1807 | |
| 1808 | $pieces = explode( DIRECTORY_SEPARATOR, dirname( $path ) ); |
| 1809 | $against = explode( DIRECTORY_SEPARATOR, $from ); |
| 1810 | |
| 1811 | if ( $pieces[0] !== $against[0] ) { |
| 1812 | // Non-matching Windows drive letters? |
| 1813 | // Return a full path. |
| 1814 | return $path; |
| 1815 | } |
| 1816 | |
| 1817 | // Trim off common prefix |
| 1818 | while ( count( $pieces ) && count( $against ) |
| 1819 | && $pieces[0] == $against[0] ) { |
| 1820 | array_shift( $pieces ); |
| 1821 | array_shift( $against ); |
| 1822 | } |
| 1823 | |
| 1824 | // relative dots to bump us to the parent |
| 1825 | while ( count( $against ) ) { |
| 1826 | array_unshift( $pieces, '..' ); |
| 1827 | array_shift( $against ); |
| 1828 | } |
| 1829 | |
| 1830 | $pieces[] = wfBaseName( $path ); |
| 1831 | |
| 1832 | return implode( DIRECTORY_SEPARATOR, $pieces ); |
| 1833 | } |
| 1834 | |
| 1835 | /** |
| 1836 | * Get a Database object. |
| 1837 | * |
| 1838 | * @param int $db Index of the connection to get. May be DB_PRIMARY for the |
| 1839 | * primary (for write queries), DB_REPLICA for potentially lagged read |
| 1840 | * queries, or an integer >= 0 for a particular server. |
| 1841 | * |
| 1842 | * @param string|string[] $groups Query groups. An array of group names that this query |
| 1843 | * belongs to. May contain a single string if the query is only |
| 1844 | * in one group. |
| 1845 | * |
| 1846 | * @param string|false $wiki The wiki ID, or false for the current wiki |
| 1847 | * |
| 1848 | * Note: multiple calls to wfGetDB(DB_REPLICA) during the course of one request |
| 1849 | * will always return the same object, unless the underlying connection or load |
| 1850 | * balancer is manually destroyed. |
| 1851 | * |
| 1852 | * Note 2: use $this->getDB() in maintenance scripts that may be invoked by |
| 1853 | * updater to ensure that a proper database is being updated. |
| 1854 | * |
| 1855 | * Note 3: When replacing calls to this with calls to methods on an injected |
| 1856 | * LoadBalancer, LoadBalancer::getConnection is more commonly needed than |
| 1857 | * LoadBalancer::getMaintenanceConnectionRef, which is needed for more advanced |
| 1858 | * administrative tasks. See the IMaintainableDatabase and IDatabase interfaces |
| 1859 | * for details. |
| 1860 | * |
| 1861 | * @deprecated since 1.39, emitting warnings since 1.42; instead, you can use: |
| 1862 | * $services = MediaWikiServices::getInstance(); |
| 1863 | * $dbr = $services->getConnectionProvider()->getReplicaDatabase(); |
| 1864 | * $dbw = $services->getConnectionProvider()->getPrimaryDatabase(); |
| 1865 | * |
| 1866 | * … or, in rare circumstances, you may need to use: |
| 1867 | * |
| 1868 | * $services->getDBLoadBalancer()->getConnection() / getMaintenanceConnectionRef() |
| 1869 | * |
| 1870 | * @return \Wikimedia\Rdbms\DBConnRef |
| 1871 | */ |
| 1872 | function wfGetDB( $db, $groups = [], $wiki = false ) { |
| 1873 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 1874 | |
| 1875 | if ( $wiki === false ) { |
| 1876 | return MediaWikiServices::getInstance() |
| 1877 | ->getDBLoadBalancer() |
| 1878 | ->getMaintenanceConnectionRef( $db, $groups, $wiki ); |
| 1879 | } else { |
| 1880 | return MediaWikiServices::getInstance() |
| 1881 | ->getDBLoadBalancerFactory() |
| 1882 | ->getMainLB( $wiki ) |
| 1883 | ->getMaintenanceConnectionRef( $db, $groups, $wiki ); |
| 1884 | } |
| 1885 | } |
| 1886 | |
| 1887 | /** |
| 1888 | * Get the URL path to a MediaWiki entry point. |
| 1889 | * |
| 1890 | * This is a wrapper to respect $wgScript and $wgLoadScript overrides. |
| 1891 | * |
| 1892 | * @see MW_ENTRY_POINT |
| 1893 | * @param string $script Name of entrypoint, without `.php` extension. |
| 1894 | * @return string |
| 1895 | */ |
| 1896 | function wfScript( $script = 'index' ) { |
| 1897 | global $wgScriptPath, $wgScript, $wgLoadScript; |
| 1898 | if ( $script === 'index' ) { |
| 1899 | return $wgScript; |
| 1900 | } elseif ( $script === 'load' ) { |
| 1901 | return $wgLoadScript; |
| 1902 | } else { |
| 1903 | return "{$wgScriptPath}/{$script}.php"; |
| 1904 | } |
| 1905 | } |
| 1906 | |
| 1907 | /** |
| 1908 | * Convenience function converts boolean values into "true" |
| 1909 | * or "false" (string) values |
| 1910 | * |
| 1911 | * @param bool $value |
| 1912 | * @return string |
| 1913 | */ |
| 1914 | function wfBoolToStr( $value ) { |
| 1915 | return $value ? 'true' : 'false'; |
| 1916 | } |
| 1917 | |
| 1918 | /** |
| 1919 | * Get a platform-independent path to the null file, e.g. /dev/null |
| 1920 | * |
| 1921 | * @return string |
| 1922 | */ |
| 1923 | function wfGetNull() { |
| 1924 | return wfIsWindows() ? 'NUL' : '/dev/null'; |
| 1925 | } |
| 1926 | |
| 1927 | /** |
| 1928 | * Replace all invalid characters with '-'. |
| 1929 | * Additional characters can be defined in $wgIllegalFileChars (see T22489). |
| 1930 | * By default, $wgIllegalFileChars includes ':', '/', '\'. |
| 1931 | * |
| 1932 | * @param string $name Filename to process |
| 1933 | * @return string |
| 1934 | */ |
| 1935 | function wfStripIllegalFilenameChars( $name ) { |
| 1936 | global $wgIllegalFileChars; |
| 1937 | $illegalFileChars = $wgIllegalFileChars ? "|[" . $wgIllegalFileChars . "]" : ''; |
| 1938 | $name = preg_replace( |
| 1939 | "/[^" . Title::legalChars() . "]" . $illegalFileChars . "/", |
| 1940 | '-', |
| 1941 | $name |
| 1942 | ); |
| 1943 | // $wgIllegalFileChars may not include '/' and '\', so we still need to do this |
| 1944 | $name = wfBaseName( $name ); |
| 1945 | return $name; |
| 1946 | } |
| 1947 | |
| 1948 | /** |
| 1949 | * Raise PHP's memory limit (if needed). |
| 1950 | * |
| 1951 | * @internal For use by Setup.php |
| 1952 | * @param int $newLimit |
| 1953 | */ |
| 1954 | function wfMemoryLimit( $newLimit ) { |
| 1955 | $oldLimit = wfShorthandToInteger( ini_get( 'memory_limit' ) ); |
| 1956 | // If the INI config is already unlimited, there is nothing larger |
| 1957 | if ( $oldLimit != -1 ) { |
| 1958 | $newLimit = wfShorthandToInteger( (string)$newLimit ); |
| 1959 | if ( $newLimit == -1 ) { |
| 1960 | wfDebug( "Removing PHP's memory limit" ); |
| 1961 | AtEase::suppressWarnings(); |
| 1962 | ini_set( 'memory_limit', $newLimit ); |
| 1963 | AtEase::restoreWarnings(); |
| 1964 | } elseif ( $newLimit > $oldLimit ) { |
| 1965 | wfDebug( "Raising PHP's memory limit to $newLimit bytes" ); |
| 1966 | AtEase::suppressWarnings(); |
| 1967 | ini_set( 'memory_limit', $newLimit ); |
| 1968 | AtEase::restoreWarnings(); |
| 1969 | } |
| 1970 | } |
| 1971 | } |
| 1972 | |
| 1973 | /** |
| 1974 | * Raise the request time limit to $wgTransactionalTimeLimit |
| 1975 | * |
| 1976 | * @return int Prior time limit |
| 1977 | * @since 1.26 |
| 1978 | */ |
| 1979 | function wfTransactionalTimeLimit() { |
| 1980 | global $wgTransactionalTimeLimit; |
| 1981 | |
| 1982 | $timeout = RequestTimeout::singleton(); |
| 1983 | $timeLimit = $timeout->getWallTimeLimit(); |
| 1984 | if ( $timeLimit !== INF ) { |
| 1985 | // RequestTimeout library is active |
| 1986 | if ( $wgTransactionalTimeLimit > $timeLimit ) { |
| 1987 | $timeout->setWallTimeLimit( $wgTransactionalTimeLimit ); |
| 1988 | } |
| 1989 | } else { |
| 1990 | // Fallback case, likely $wgRequestTimeLimit === null |
| 1991 | $timeLimit = (int)ini_get( 'max_execution_time' ); |
| 1992 | // Note that CLI scripts use 0 |
| 1993 | if ( $timeLimit > 0 && $wgTransactionalTimeLimit > $timeLimit ) { |
| 1994 | $timeout->setWallTimeLimit( $wgTransactionalTimeLimit ); |
| 1995 | } |
| 1996 | } |
| 1997 | ignore_user_abort( true ); // ignore client disconnects |
| 1998 | |
| 1999 | return $timeLimit; |
| 2000 | } |
| 2001 | |
| 2002 | /** |
| 2003 | * Converts shorthand byte notation to integer form |
| 2004 | * |
| 2005 | * @param null|string $string |
| 2006 | * @param int $default Returned if $string is empty |
| 2007 | * @return int |
| 2008 | */ |
| 2009 | function wfShorthandToInteger( ?string $string = '', int $default = -1 ): int { |
| 2010 | $string = trim( $string ?? '' ); |
| 2011 | if ( $string === '' ) { |
| 2012 | return $default; |
| 2013 | } |
| 2014 | $last = $string[strlen( $string ) - 1]; |
| 2015 | $val = intval( $string ); |
| 2016 | switch ( $last ) { |
| 2017 | case 'g': |
| 2018 | case 'G': |
| 2019 | $val *= 1024; |
| 2020 | // break intentionally missing |
| 2021 | case 'm': |
| 2022 | case 'M': |
| 2023 | $val *= 1024; |
| 2024 | // break intentionally missing |
| 2025 | case 'k': |
| 2026 | case 'K': |
| 2027 | $val *= 1024; |
| 2028 | } |
| 2029 | |
| 2030 | return $val; |
| 2031 | } |
| 2032 | |
| 2033 | /** |
| 2034 | * Wrapper around php's unpack. |
| 2035 | * |
| 2036 | * @param string $format The format string (See php's docs) |
| 2037 | * @param string $data A binary string of binary data |
| 2038 | * @param int|bool $length The minimum length of $data or false. This is to |
| 2039 | * prevent reading beyond the end of $data. false to disable the check. |
| 2040 | * |
| 2041 | * Also be careful when using this function to read unsigned 32 bit integer |
| 2042 | * because php might make it negative. |
| 2043 | * |
| 2044 | * @throws MWException If $data not long enough, or if unpack fails |
| 2045 | * @return array Associative array of the extracted data |
| 2046 | * @deprecated since 1.42 Use StringUtils::unpack instead |
| 2047 | */ |
| 2048 | function wfUnpack( $format, $data, $length = false ) { |
| 2049 | wfDeprecated( __FUNCTION__, '1.42' ); |
| 2050 | try { |
| 2051 | return StringUtils::unpack( (string)$format, (string)$data, $length ); |
| 2052 | } catch ( UnpackFailedException $e ) { |
| 2053 | throw new MWException( $e->getMessage(), 0, $e ); |
| 2054 | } |
| 2055 | } |
| 2056 | |
| 2057 | /** |
| 2058 | * Determine input string is represents as infinity |
| 2059 | * |
| 2060 | * @param string $str The string to determine |
| 2061 | * @return bool |
| 2062 | * @since 1.25 |
| 2063 | */ |
| 2064 | function wfIsInfinity( $str ) { |
| 2065 | // The INFINITY_VALS are hardcoded elsewhere in MediaWiki (e.g. mediawiki.special.block.js). |
| 2066 | return in_array( $str, ExpiryDef::INFINITY_VALS ); |
| 2067 | } |
| 2068 | |
| 2069 | /** |
| 2070 | * Returns true if these thumbnail parameters match one that MediaWiki |
| 2071 | * requests from file description pages and/or parser output. |
| 2072 | * |
| 2073 | * $params is considered non-standard if they involve a non-standard |
| 2074 | * width or any non-default parameters aside from width and page number. |
| 2075 | * The number of possible files with standard parameters is far less than |
| 2076 | * that of all combinations; rate-limiting for them can thus be more generous. |
| 2077 | * |
| 2078 | * @param File $file |
| 2079 | * @param array $params |
| 2080 | * @return bool |
| 2081 | * @since 1.24 Moved from thumb.php to GlobalFunctions in 1.25 |
| 2082 | */ |
| 2083 | function wfThumbIsStandard( File $file, array $params ) { |
| 2084 | global $wgThumbLimits, $wgImageLimits, $wgResponsiveImages; |
| 2085 | |
| 2086 | $multipliers = [ 1 ]; |
| 2087 | if ( $wgResponsiveImages ) { |
| 2088 | // These available sizes are hardcoded currently elsewhere in MediaWiki. |
| 2089 | // @see Linker::processResponsiveImages |
| 2090 | $multipliers[] = 1.5; |
| 2091 | $multipliers[] = 2; |
| 2092 | } |
| 2093 | |
| 2094 | $handler = $file->getHandler(); |
| 2095 | if ( !$handler || !isset( $params['width'] ) ) { |
| 2096 | return false; |
| 2097 | } |
| 2098 | |
| 2099 | $basicParams = []; |
| 2100 | if ( isset( $params['page'] ) ) { |
| 2101 | $basicParams['page'] = $params['page']; |
| 2102 | } |
| 2103 | |
| 2104 | $thumbLimits = []; |
| 2105 | $imageLimits = []; |
| 2106 | // Expand limits to account for multipliers |
| 2107 | foreach ( $multipliers as $multiplier ) { |
| 2108 | $thumbLimits = array_merge( $thumbLimits, array_map( |
| 2109 | static function ( $width ) use ( $multiplier ) { |
| 2110 | return round( $width * $multiplier ); |
| 2111 | }, $wgThumbLimits ) |
| 2112 | ); |
| 2113 | $imageLimits = array_merge( $imageLimits, array_map( |
| 2114 | static function ( $pair ) use ( $multiplier ) { |
| 2115 | return [ |
| 2116 | round( $pair[0] * $multiplier ), |
| 2117 | round( $pair[1] * $multiplier ), |
| 2118 | ]; |
| 2119 | }, $wgImageLimits ) |
| 2120 | ); |
| 2121 | } |
| 2122 | |
| 2123 | // Check if the width matches one of $wgThumbLimits |
| 2124 | if ( in_array( $params['width'], $thumbLimits ) ) { |
| 2125 | $normalParams = $basicParams + [ 'width' => $params['width'] ]; |
| 2126 | // Append any default values to the map (e.g. "lossy", "lossless", ...) |
| 2127 | $handler->normaliseParams( $file, $normalParams ); |
| 2128 | } else { |
| 2129 | // If not, then check if the width matches one of $wgImageLimits |
| 2130 | $match = false; |
| 2131 | foreach ( $imageLimits as $pair ) { |
| 2132 | $normalParams = $basicParams + [ 'width' => $pair[0], 'height' => $pair[1] ]; |
| 2133 | // Decide whether the thumbnail should be scaled on width or height. |
| 2134 | // Also append any default values to the map (e.g. "lossy", "lossless", ...) |
| 2135 | $handler->normaliseParams( $file, $normalParams ); |
| 2136 | // Check if this standard thumbnail size maps to the given width |
| 2137 | if ( $normalParams['width'] == $params['width'] ) { |
| 2138 | $match = true; |
| 2139 | break; |
| 2140 | } |
| 2141 | } |
| 2142 | if ( !$match ) { |
| 2143 | return false; // not standard for description pages |
| 2144 | } |
| 2145 | } |
| 2146 | |
| 2147 | // Check that the given values for non-page, non-width, params are just defaults |
| 2148 | foreach ( $params as $key => $value ) { |
| 2149 | if ( !isset( $normalParams[$key] ) || $normalParams[$key] != $value ) { |
| 2150 | return false; |
| 2151 | } |
| 2152 | } |
| 2153 | |
| 2154 | return true; |
| 2155 | } |
| 2156 | |
| 2157 | /** |
| 2158 | * Merges two (possibly) 2 dimensional arrays into the target array ($baseArray). |
| 2159 | * |
| 2160 | * Values that exist in both values will be combined with += (all values of the array |
| 2161 | * of $newValues will be added to the values of the array of $baseArray, while values, |
| 2162 | * that exists in both, the value of $baseArray will be used). |
| 2163 | * |
| 2164 | * @param array $baseArray The array where you want to add the values of $newValues to |
| 2165 | * @param array $newValues An array with new values |
| 2166 | * @return array The combined array |
| 2167 | * @since 1.26 |
| 2168 | */ |
| 2169 | function wfArrayPlus2d( array $baseArray, array $newValues ) { |
| 2170 | // First merge items that are in both arrays |
| 2171 | foreach ( $baseArray as $name => &$groupVal ) { |
| 2172 | if ( isset( $newValues[$name] ) ) { |
| 2173 | $groupVal += $newValues[$name]; |
| 2174 | } |
| 2175 | } |
| 2176 | // Now add items that didn't exist yet |
| 2177 | $baseArray += $newValues; |
| 2178 | |
| 2179 | return $baseArray; |
| 2180 | } |