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| 1 | <?php |
| 2 | /** |
| 3 | * Global functions used everywhere. |
| 4 | * |
| 5 | * @license GPL-2.0-or-later |
| 6 | * @file |
| 7 | */ |
| 8 | |
| 9 | use MediaWiki\Debug\MWDebug; |
| 10 | use MediaWiki\Exception\ProcOpenError; |
| 11 | use MediaWiki\FileRepo\File\File; |
| 12 | use MediaWiki\HookContainer\HookRunner; |
| 13 | use MediaWiki\Logger\LoggerFactory; |
| 14 | use MediaWiki\MediaWikiServices; |
| 15 | use MediaWiki\Message\Message; |
| 16 | use MediaWiki\Registration\ExtensionRegistry; |
| 17 | use MediaWiki\Request\ContentSecurityPolicy; |
| 18 | use MediaWiki\Request\WebRequest; |
| 19 | use MediaWiki\Shell\Shell; |
| 20 | use MediaWiki\Title\Title; |
| 21 | use MediaWiki\Utils\UrlUtils; |
| 22 | use Wikimedia\FileBackend\FileBackend; |
| 23 | use Wikimedia\FileBackend\FSFile\TempFSFile; |
| 24 | use Wikimedia\Http\HttpStatus; |
| 25 | use Wikimedia\Message\MessageParam; |
| 26 | use Wikimedia\Message\MessageSpecifier; |
| 27 | use Wikimedia\ParamValidator\TypeDef\ExpiryDef; |
| 28 | use Wikimedia\RequestTimeout\RequestTimeout; |
| 29 | use Wikimedia\Timestamp\ConvertibleTimestamp; |
| 30 | use Wikimedia\Timestamp\TimestampFormat as TS; |
| 31 | |
| 32 | /** |
| 33 | * Load an extension |
| 34 | * |
| 35 | * This queues an extension to be loaded through |
| 36 | * the ExtensionRegistry system. |
| 37 | * |
| 38 | * @param string $ext Name of the extension to load |
| 39 | * @param string|null $path Absolute path of where to find the extension.json file |
| 40 | * @since 1.25 |
| 41 | */ |
| 42 | function wfLoadExtension( $ext, $path = null ) { |
| 43 | if ( !$path ) { |
| 44 | global $wgExtensionDirectory; |
| 45 | $path = "$wgExtensionDirectory/$ext/extension.json"; |
| 46 | } |
| 47 | ExtensionRegistry::getInstance()->queue( $path ); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Load multiple extensions at once |
| 52 | * |
| 53 | * Same as wfLoadExtension, but more efficient if you |
| 54 | * are loading multiple extensions. |
| 55 | * |
| 56 | * If you want to specify custom paths, you should interact with |
| 57 | * ExtensionRegistry directly. |
| 58 | * |
| 59 | * @see wfLoadExtension |
| 60 | * @param string[] $exts Array of extension names to load |
| 61 | * @since 1.25 |
| 62 | */ |
| 63 | function wfLoadExtensions( array $exts ) { |
| 64 | global $wgExtensionDirectory; |
| 65 | $registry = ExtensionRegistry::getInstance(); |
| 66 | foreach ( $exts as $ext ) { |
| 67 | $registry->queue( "$wgExtensionDirectory/$ext/extension.json" ); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Load a skin |
| 73 | * |
| 74 | * @see wfLoadExtension |
| 75 | * @param string $skin Name of the extension to load |
| 76 | * @param string|null $path Absolute path of where to find the skin.json file |
| 77 | * @since 1.25 |
| 78 | */ |
| 79 | function wfLoadSkin( $skin, $path = null ) { |
| 80 | if ( !$path ) { |
| 81 | global $wgStyleDirectory; |
| 82 | $path = "$wgStyleDirectory/$skin/skin.json"; |
| 83 | } |
| 84 | ExtensionRegistry::getInstance()->queue( $path ); |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Load multiple skins at once |
| 89 | * |
| 90 | * @see wfLoadExtensions |
| 91 | * @param string[] $skins Array of extension names to load |
| 92 | * @since 1.25 |
| 93 | */ |
| 94 | function wfLoadSkins( array $skins ) { |
| 95 | global $wgStyleDirectory; |
| 96 | $registry = ExtensionRegistry::getInstance(); |
| 97 | foreach ( $skins as $skin ) { |
| 98 | $registry->queue( "$wgStyleDirectory/$skin/skin.json" ); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Like array_diff( $arr1, $arr2 ) except that it works with two-dimensional arrays. |
| 104 | * @deprecated since 1.43 Use StatusValue::merge() instead |
| 105 | * @param string[]|array[] $arr1 |
| 106 | * @param string[]|array[] $arr2 |
| 107 | * @return array |
| 108 | */ |
| 109 | function wfArrayDiff2( $arr1, $arr2 ) { |
| 110 | wfDeprecated( __FUNCTION__, '1.43' ); |
| 111 | /** |
| 112 | * @param string|array $a |
| 113 | * @param string|array $b |
| 114 | */ |
| 115 | $comparator = static function ( $a, $b ): int { |
| 116 | if ( is_string( $a ) && is_string( $b ) ) { |
| 117 | return strcmp( $a, $b ); |
| 118 | } |
| 119 | if ( !is_array( $a ) && !is_array( $b ) ) { |
| 120 | throw new InvalidArgumentException( |
| 121 | 'This function assumes that array elements are all strings or all arrays' |
| 122 | ); |
| 123 | } |
| 124 | if ( count( $a ) !== count( $b ) ) { |
| 125 | return count( $a ) <=> count( $b ); |
| 126 | } else { |
| 127 | reset( $a ); |
| 128 | reset( $b ); |
| 129 | while ( key( $a ) !== null && key( $b ) !== null ) { |
| 130 | $valueA = current( $a ); |
| 131 | $valueB = current( $b ); |
| 132 | $cmp = strcmp( $valueA, $valueB ); |
| 133 | if ( $cmp !== 0 ) { |
| 134 | return $cmp; |
| 135 | } |
| 136 | next( $a ); |
| 137 | next( $b ); |
| 138 | } |
| 139 | return 0; |
| 140 | } |
| 141 | }; |
| 142 | return array_udiff( $arr1, $arr2, $comparator ); |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Merge arrays in the style of PermissionManager::getPermissionErrors, with duplicate removal |
| 147 | * e.g. |
| 148 | * wfMergeErrorArrays( |
| 149 | * [ [ 'x' ] ], |
| 150 | * [ [ 'x', '2' ] ], |
| 151 | * [ [ 'x' ] ], |
| 152 | * [ [ 'y' ] ] |
| 153 | * ); |
| 154 | * returns: |
| 155 | * [ |
| 156 | * [ 'x', '2' ], |
| 157 | * [ 'x' ], |
| 158 | * [ 'y' ] |
| 159 | * ] |
| 160 | * |
| 161 | * @deprecated since 1.43 Use StatusValue::merge() instead |
| 162 | * @param array[] ...$args |
| 163 | * @return array |
| 164 | */ |
| 165 | function wfMergeErrorArrays( ...$args ) { |
| 166 | wfDeprecated( __FUNCTION__, '1.43' ); |
| 167 | $out = []; |
| 168 | foreach ( $args as $errors ) { |
| 169 | foreach ( $errors as $params ) { |
| 170 | $originalParams = $params; |
| 171 | if ( $params[0] instanceof MessageSpecifier ) { |
| 172 | $params = [ $params[0]->getKey(), ...$params[0]->getParams() ]; |
| 173 | } |
| 174 | # @todo FIXME: Sometimes get nested arrays for $params, |
| 175 | # which leads to E_NOTICEs |
| 176 | $spec = implode( "\t", $params ); |
| 177 | $out[$spec] = $originalParams; |
| 178 | } |
| 179 | } |
| 180 | return array_values( $out ); |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Insert an array into another array after the specified key. If the key is |
| 185 | * not present in the input array, it is returned without modification. |
| 186 | * |
| 187 | * @param array $array |
| 188 | * @param array $insert The array to insert. |
| 189 | * @param mixed $after The key to insert after. |
| 190 | * @return array |
| 191 | */ |
| 192 | function wfArrayInsertAfter( array $array, array $insert, $after ) { |
| 193 | // Find the offset of the element to insert after. |
| 194 | $keys = array_keys( $array ); |
| 195 | $offsetByKey = array_flip( $keys ); |
| 196 | |
| 197 | if ( !\array_key_exists( $after, $offsetByKey ) ) { |
| 198 | return $array; |
| 199 | } |
| 200 | $offset = $offsetByKey[$after]; |
| 201 | |
| 202 | // Insert at the specified offset |
| 203 | $before = array_slice( $array, 0, $offset + 1, true ); |
| 204 | $after = array_slice( $array, $offset + 1, count( $array ) - $offset, true ); |
| 205 | |
| 206 | $output = $before + $insert + $after; |
| 207 | |
| 208 | return $output; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Recursively converts the parameter (an object) to an array with the same data |
| 213 | * |
| 214 | * @phpcs:ignore MediaWiki.Commenting.FunctionComment.ObjectTypeHintParam |
| 215 | * @param object|array $objOrArray |
| 216 | * @param bool $recursive |
| 217 | * @return array |
| 218 | */ |
| 219 | function wfObjectToArray( $objOrArray, $recursive = true ) { |
| 220 | $array = []; |
| 221 | if ( is_object( $objOrArray ) ) { |
| 222 | $objOrArray = get_object_vars( $objOrArray ); |
| 223 | } |
| 224 | foreach ( $objOrArray as $key => $value ) { |
| 225 | if ( $recursive && ( is_object( $value ) || is_array( $value ) ) ) { |
| 226 | $value = wfObjectToArray( $value ); |
| 227 | } |
| 228 | |
| 229 | $array[$key] = $value; |
| 230 | } |
| 231 | |
| 232 | return $array; |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Get a random decimal value in the domain of [0, 1), in a way |
| 237 | * not likely to give duplicate values for any realistic |
| 238 | * number of articles. |
| 239 | * |
| 240 | * @note This is designed for use in relation to Special:RandomPage |
| 241 | * and the page_random database field. |
| 242 | * |
| 243 | * @return string |
| 244 | */ |
| 245 | function wfRandom() { |
| 246 | // The maximum random value is "only" 2^31-1, so get two random |
| 247 | // values to reduce the chance of dupes |
| 248 | $max = mt_getrandmax() + 1; |
| 249 | $rand = number_format( ( mt_rand() * $max + mt_rand() ) / $max / $max, 12, '.', '' ); |
| 250 | return $rand; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Get a random string containing a number of pseudo-random hex characters. |
| 255 | * |
| 256 | * @note This is not secure, if you are trying to generate some sort |
| 257 | * of token please use MWCryptRand instead. |
| 258 | * |
| 259 | * @param int $length The length of the string to generate |
| 260 | * @return string |
| 261 | * @since 1.20 |
| 262 | */ |
| 263 | function wfRandomString( $length = 32 ) { |
| 264 | $str = ''; |
| 265 | for ( $n = 0; $n < $length; $n += 7 ) { |
| 266 | $str .= sprintf( '%07x', mt_rand() & 0xfffffff ); |
| 267 | } |
| 268 | return substr( $str, 0, $length ); |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * We want some things to be included as literal characters in our title URLs |
| 273 | * for prettiness, which urlencode encodes by default. According to RFC 1738, |
| 274 | * all of the following should be safe: |
| 275 | * |
| 276 | * ;:@&=$-_.+!*'(), |
| 277 | * |
| 278 | * RFC 1738 says ~ is unsafe, however RFC 3986 considers it an unreserved |
| 279 | * character which should not be encoded. More importantly, google chrome |
| 280 | * always converts %7E back to ~, and converting it in this function can |
| 281 | * cause a redirect loop (T105265). |
| 282 | * |
| 283 | * But + is not safe because it's used to indicate a space; &= are only safe in |
| 284 | * paths and not in queries (and we don't distinguish here); ' seems kind of |
| 285 | * scary; and urlencode() doesn't touch -_. to begin with. Plus, although / |
| 286 | * is reserved, we don't care. So the list we unescape is: |
| 287 | * |
| 288 | * ;:@$!*(),/~ |
| 289 | * |
| 290 | * However, IIS7 redirects fail when the url contains a colon (see T24709), |
| 291 | * so no fancy : for IIS7. |
| 292 | * |
| 293 | * %2F in the page titles seems to fatally break for some reason. |
| 294 | * |
| 295 | * @param string $s |
| 296 | * @return string |
| 297 | */ |
| 298 | function wfUrlencode( $s ) { |
| 299 | static $needle; |
| 300 | |
| 301 | if ( $s === null ) { |
| 302 | // Reset $needle for testing. |
| 303 | $needle = null; |
| 304 | return ''; |
| 305 | } |
| 306 | |
| 307 | if ( $needle === null ) { |
| 308 | $needle = [ '%3B', '%40', '%24', '%21', '%2A', '%28', '%29', '%2C', '%2F', '%7E' ]; |
| 309 | if ( !isset( $_SERVER['SERVER_SOFTWARE'] ) || |
| 310 | !str_contains( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7' ) |
| 311 | ) { |
| 312 | $needle[] = '%3A'; |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | $s = urlencode( $s ); |
| 317 | $s = str_ireplace( |
| 318 | $needle, |
| 319 | [ ';', '@', '$', '!', '*', '(', ')', ',', '/', '~', ':' ], |
| 320 | $s |
| 321 | ); |
| 322 | |
| 323 | return $s; |
| 324 | } |
| 325 | |
| 326 | /** |
| 327 | * This function takes one or two arrays as input, and returns a CGI-style string, e.g. |
| 328 | * "days=7&limit=100". Options in the first array override options in the second. |
| 329 | * Options set to null or false will not be output. |
| 330 | * |
| 331 | * @param array $array1 ( String|Array ) |
| 332 | * @param array|null $array2 ( String|Array ) |
| 333 | * @param string $prefix |
| 334 | * @return string |
| 335 | */ |
| 336 | function wfArrayToCgi( $array1, $array2 = null, $prefix = '' ) { |
| 337 | if ( $array2 !== null ) { |
| 338 | $array1 += $array2; |
| 339 | } |
| 340 | |
| 341 | $cgi = ''; |
| 342 | foreach ( $array1 as $key => $value ) { |
| 343 | if ( $value !== null && $value !== false ) { |
| 344 | if ( $cgi != '' ) { |
| 345 | $cgi .= '&'; |
| 346 | } |
| 347 | if ( $prefix !== '' ) { |
| 348 | $key = $prefix . "[$key]"; |
| 349 | } |
| 350 | if ( is_array( $value ) ) { |
| 351 | $firstTime = true; |
| 352 | foreach ( $value as $k => $v ) { |
| 353 | $cgi .= $firstTime ? '' : '&'; |
| 354 | if ( is_array( $v ) ) { |
| 355 | $cgi .= wfArrayToCgi( $v, null, $key . "[$k]" ); |
| 356 | } else { |
| 357 | $cgi .= urlencode( $key . "[$k]" ) . '=' . urlencode( $v ); |
| 358 | } |
| 359 | $firstTime = false; |
| 360 | } |
| 361 | } else { |
| 362 | if ( is_object( $value ) ) { |
| 363 | $value = $value->__toString(); |
| 364 | } |
| 365 | $cgi .= urlencode( $key ) . '=' . urlencode( $value ); |
| 366 | } |
| 367 | } |
| 368 | } |
| 369 | return $cgi; |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * This is the logical opposite of wfArrayToCgi(): it accepts a query string as |
| 374 | * its argument and returns the same string in array form. This allows compatibility |
| 375 | * with legacy functions that accept raw query strings instead of nice |
| 376 | * arrays. Of course, keys and values are urldecode()d. |
| 377 | * |
| 378 | * @param string $query Query string |
| 379 | * @return string[] Array version of input |
| 380 | */ |
| 381 | function wfCgiToArray( $query ) { |
| 382 | if ( isset( $query[0] ) && $query[0] == '?' ) { |
| 383 | $query = substr( $query, 1 ); |
| 384 | } |
| 385 | $bits = explode( '&', $query ); |
| 386 | $ret = []; |
| 387 | foreach ( $bits as $bit ) { |
| 388 | if ( $bit === '' ) { |
| 389 | continue; |
| 390 | } |
| 391 | if ( !str_contains( $bit, '=' ) ) { |
| 392 | // Pieces like &qwerty become 'qwerty' => '' (at least this is what php does) |
| 393 | $key = $bit; |
| 394 | $value = ''; |
| 395 | } else { |
| 396 | [ $key, $value ] = explode( '=', $bit ); |
| 397 | } |
| 398 | $key = urldecode( $key ); |
| 399 | $value = urldecode( $value ); |
| 400 | if ( str_contains( $key, '[' ) ) { |
| 401 | $keys = array_reverse( explode( '[', $key ) ); |
| 402 | $key = array_pop( $keys ); |
| 403 | $temp = $value; |
| 404 | foreach ( $keys as $k ) { |
| 405 | $k = substr( $k, 0, -1 ); |
| 406 | $temp = [ $k => $temp ]; |
| 407 | } |
| 408 | if ( isset( $ret[$key] ) && is_array( $ret[$key] ) ) { |
| 409 | $ret[$key] = array_merge( $ret[$key], $temp ); |
| 410 | } else { |
| 411 | $ret[$key] = $temp; |
| 412 | } |
| 413 | } else { |
| 414 | $ret[$key] = $value; |
| 415 | } |
| 416 | } |
| 417 | return $ret; |
| 418 | } |
| 419 | |
| 420 | /** |
| 421 | * Append a query string to an existing URL, which may or may not already |
| 422 | * have query string parameters already. If so, they will be combined. |
| 423 | * |
| 424 | * @param string $url |
| 425 | * @param string|array $query String or associative array |
| 426 | * @return string |
| 427 | */ |
| 428 | function wfAppendQuery( $url, $query ) { |
| 429 | if ( is_array( $query ) ) { |
| 430 | $query = wfArrayToCgi( $query ); |
| 431 | } |
| 432 | if ( $query != '' ) { |
| 433 | // Remove the fragment, if there is one |
| 434 | $fragment = false; |
| 435 | $hashPos = strpos( $url, '#' ); |
| 436 | if ( $hashPos !== false ) { |
| 437 | $fragment = substr( $url, $hashPos ); |
| 438 | $url = substr( $url, 0, $hashPos ); |
| 439 | } |
| 440 | |
| 441 | // Add parameter |
| 442 | if ( !str_contains( $url, '?' ) ) { |
| 443 | $url .= '?'; |
| 444 | } else { |
| 445 | $url .= '&'; |
| 446 | } |
| 447 | $url .= $query; |
| 448 | |
| 449 | // Put the fragment back |
| 450 | if ( $fragment !== false ) { |
| 451 | $url .= $fragment; |
| 452 | } |
| 453 | } |
| 454 | return $url; |
| 455 | } |
| 456 | |
| 457 | /** |
| 458 | * @deprecated since 1.43; get a UrlUtils from services, or construct your own |
| 459 | * @internal |
| 460 | * @return UrlUtils from services if initialized, otherwise make one from globals |
| 461 | */ |
| 462 | function wfGetUrlUtils(): UrlUtils { |
| 463 | global $wgServer, $wgCanonicalServer, $wgInternalServer, $wgRequest, $wgHttpsPort, |
| 464 | $wgUrlProtocols; |
| 465 | |
| 466 | if ( MediaWikiServices::hasInstance() ) { |
| 467 | $services = MediaWikiServices::getInstance(); |
| 468 | if ( $services->hasService( 'UrlUtils' ) ) { |
| 469 | return $services->getUrlUtils(); |
| 470 | } |
| 471 | } |
| 472 | |
| 473 | return new UrlUtils( [ |
| 474 | // UrlUtils throws if the relevant $wg(|Canonical|Internal) variable is null, but the old |
| 475 | // implementations implicitly converted it to an empty string (presumably by mistake). |
| 476 | // Preserve the old behavior for compatibility. |
| 477 | UrlUtils::SERVER => $wgServer ?? '', |
| 478 | UrlUtils::CANONICAL_SERVER => $wgCanonicalServer ?? '', |
| 479 | UrlUtils::INTERNAL_SERVER => $wgInternalServer ?? '', |
| 480 | UrlUtils::FALLBACK_PROTOCOL => $wgRequest ? $wgRequest->getProtocol() |
| 481 | : WebRequest::detectProtocol(), |
| 482 | UrlUtils::HTTPS_PORT => $wgHttpsPort, |
| 483 | UrlUtils::VALID_PROTOCOLS => $wgUrlProtocols, |
| 484 | ] ); |
| 485 | } |
| 486 | |
| 487 | /** |
| 488 | * Expand a potentially local URL to a fully-qualified URL using $wgServer |
| 489 | * (or one of its alternatives). |
| 490 | * |
| 491 | * The meaning of the PROTO_* constants is as follows: |
| 492 | * PROTO_HTTP: Output a URL starting with http:// |
| 493 | * PROTO_HTTPS: Output a URL starting with https:// |
| 494 | * PROTO_RELATIVE: Output a URL starting with // (protocol-relative URL) |
| 495 | * PROTO_CURRENT: Output a URL starting with either http:// or https:// , depending |
| 496 | * on which protocol was used for the current incoming request |
| 497 | * PROTO_CANONICAL: For URLs without a domain, like /w/index.php , use $wgCanonicalServer. |
| 498 | * For protocol-relative URLs, use the protocol of $wgCanonicalServer |
| 499 | * PROTO_INTERNAL: Like PROTO_CANONICAL, but uses $wgInternalServer instead of $wgCanonicalServer |
| 500 | * |
| 501 | * If $url specifies a protocol, or $url is domain-relative and $wgServer |
| 502 | * specifies a protocol, PROTO_HTTP, PROTO_HTTPS, PROTO_RELATIVE and |
| 503 | * PROTO_CURRENT do not change that. |
| 504 | * |
| 505 | * Parent references (/../) in the path are resolved (as in UrlUtils::removeDotSegments()). |
| 506 | * |
| 507 | * @deprecated since 1.39, use UrlUtils::expand(); hard-deprecated since 1.45 |
| 508 | * @param string $url An URL; can be absolute (e.g. http://example.com/foo/bar), |
| 509 | * protocol-relative (//example.com/foo/bar) or domain-relative (/foo/bar). |
| 510 | * @param string|int|null $defaultProto One of the PROTO_* constants, as described above. |
| 511 | * @return string|false Fully-qualified URL, current-path-relative URL or false if |
| 512 | * no valid URL can be constructed |
| 513 | */ |
| 514 | function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT ) { |
| 515 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 516 | |
| 517 | return wfGetUrlUtils()->expand( (string)$url, $defaultProto ) ?? false; |
| 518 | } |
| 519 | |
| 520 | /** |
| 521 | * This function will reassemble a URL parsed with wfParseURL. This is useful |
| 522 | * if you need to edit part of a URL and put it back together. |
| 523 | * |
| 524 | * This is the basic structure used (brackets contain keys for $urlParts): |
| 525 | * [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment] |
| 526 | * |
| 527 | * @deprecated since 1.39, use UrlUtils::assemble(); hard-deprecated since 1.45 |
| 528 | * @since 1.19 |
| 529 | * @param array $urlParts URL parts, as output from wfParseUrl |
| 530 | * @return string URL assembled from its component parts |
| 531 | */ |
| 532 | function wfAssembleUrl( $urlParts ) { |
| 533 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 534 | |
| 535 | return UrlUtils::assemble( (array)$urlParts ); |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * Returns a partial regular expression of recognized URL protocols, e.g. "http:\/\/|https:\/\/" |
| 540 | * |
| 541 | * @deprecated since 1.39, use UrlUtils::validProtocols(); hard-deprecated since 1.43 |
| 542 | * @param bool $includeProtocolRelative If false, remove '//' from the returned protocol list. |
| 543 | * DO NOT USE this directly, use UrlUtils::validAbsoluteProtocols() instead |
| 544 | * @return string |
| 545 | */ |
| 546 | function wfUrlProtocols( $includeProtocolRelative = true ) { |
| 547 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 548 | |
| 549 | return $includeProtocolRelative ? wfGetUrlUtils()->validProtocols() : |
| 550 | wfGetUrlUtils()->validAbsoluteProtocols(); |
| 551 | } |
| 552 | |
| 553 | /** |
| 554 | * Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if |
| 555 | * you need a regex that matches all URL protocols but does not match protocol- |
| 556 | * relative URLs |
| 557 | * @deprecated since 1.39, use UrlUtils::validAbsoluteProtocols(); hard-deprecated since 1.44 |
| 558 | * @return string |
| 559 | */ |
| 560 | function wfUrlProtocolsWithoutProtRel() { |
| 561 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 562 | |
| 563 | return wfGetUrlUtils()->validAbsoluteProtocols(); |
| 564 | } |
| 565 | |
| 566 | /** |
| 567 | * parse_url() work-alike, but non-broken. Differences: |
| 568 | * |
| 569 | * 1) Handles protocols that don't use :// (e.g., mailto: and news:, as well as |
| 570 | * protocol-relative URLs) correctly. |
| 571 | * 2) Adds a "delimiter" element to the array (see (2)). |
| 572 | * 3) Verifies that the protocol is on the $wgUrlProtocols allowed list. |
| 573 | * 4) Rejects some invalid URLs that parse_url doesn't, e.g. the empty string or URLs starting with |
| 574 | * a line feed character. |
| 575 | * |
| 576 | * @deprecated since 1.39, use UrlUtils::parse(); hard-deprecated since 1.45 |
| 577 | * @param string $url A URL to parse |
| 578 | * @return string[]|false Bits of the URL in an associative array, or false on failure. |
| 579 | * Possible fields: |
| 580 | * - scheme: URI scheme (protocol), e.g. 'http', 'mailto'. Lowercase, always present, but can |
| 581 | * be an empty string for protocol-relative URLs. |
| 582 | * - delimiter: either '://', ':' or '//'. Always present. |
| 583 | * - host: domain name / IP. Always present, but could be an empty string, e.g. for file: URLs. |
| 584 | * - port: port number. Will be missing when port is not explicitly specified. |
| 585 | * - user: user name, e.g. for HTTP Basic auth URLs such as http://user:pass@example.com/ |
| 586 | * Missing when there is no username. |
| 587 | * - pass: password, same as above. |
| 588 | * - path: path including the leading /. Will be missing when empty (e.g. 'http://example.com') |
| 589 | * - query: query string (as a string; see wfCgiToArray() for parsing it), can be missing. |
| 590 | * - fragment: the part after #, can be missing. |
| 591 | */ |
| 592 | function wfParseUrl( $url ) { |
| 593 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 594 | |
| 595 | return wfGetUrlUtils()->parse( (string)$url ) ?? false; |
| 596 | } |
| 597 | |
| 598 | /** |
| 599 | * Check whether a given URL has a domain that occurs in a given set of domains |
| 600 | * |
| 601 | * @deprecated since 1.39, use UrlUtils::matchesDomainList(); hard-deprecated since 1.44 |
| 602 | * @param string $url |
| 603 | * @param array $domains Array of domains (strings) |
| 604 | * @return bool True if the host part of $url ends in one of the strings in $domains |
| 605 | */ |
| 606 | function wfMatchesDomainList( $url, $domains ) { |
| 607 | wfDeprecated( __FUNCTION__, '1.39' ); |
| 608 | |
| 609 | return wfGetUrlUtils()->matchesDomainList( (string)$url, (array)$domains ); |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * Sends a line to the debug log if enabled or, optionally, to a comment in output. |
| 614 | * In normal operation this is a NOP. |
| 615 | * |
| 616 | * Controlling globals: |
| 617 | * $wgDebugLogFile - points to the log file |
| 618 | * $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output. |
| 619 | * $wgDebugComments - if on, some debug items may appear in comments in the HTML output. |
| 620 | * |
| 621 | * @since 1.25 support for additional context data |
| 622 | * |
| 623 | * @param string $text |
| 624 | * @param string|bool $dest Destination of the message: |
| 625 | * - 'all': both to the log and HTML (debug toolbar or HTML comments) |
| 626 | * - 'private': excluded from HTML output |
| 627 | * For backward compatibility, it can also take a boolean: |
| 628 | * - true: same as 'all' |
| 629 | * - false: same as 'private' |
| 630 | * @param array $context Additional logging context data |
| 631 | */ |
| 632 | function wfDebug( $text, $dest = 'all', array $context = [] ) { |
| 633 | global $wgDebugRawPage, $wgDebugLogPrefix; |
| 634 | |
| 635 | if ( !$wgDebugRawPage && wfIsDebugRawPage() ) { |
| 636 | return; |
| 637 | } |
| 638 | |
| 639 | $text = trim( $text ); |
| 640 | |
| 641 | if ( $wgDebugLogPrefix !== '' ) { |
| 642 | $context['prefix'] = $wgDebugLogPrefix; |
| 643 | } |
| 644 | $context['private'] = ( $dest === false || $dest === 'private' ); |
| 645 | |
| 646 | $logger = LoggerFactory::getInstance( 'wfDebug' ); |
| 647 | $logger->debug( $text, $context ); |
| 648 | } |
| 649 | |
| 650 | /** |
| 651 | * Returns true if debug logging should be suppressed if $wgDebugRawPage = false |
| 652 | * @return bool |
| 653 | */ |
| 654 | function wfIsDebugRawPage() { |
| 655 | static $cache; |
| 656 | if ( $cache !== null ) { |
| 657 | return $cache; |
| 658 | } |
| 659 | // Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet |
| 660 | // phpcs:ignore MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals |
| 661 | if ( ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' ) |
| 662 | || MW_ENTRY_POINT === 'load' |
| 663 | ) { |
| 664 | $cache = true; |
| 665 | } else { |
| 666 | $cache = false; |
| 667 | } |
| 668 | return $cache; |
| 669 | } |
| 670 | |
| 671 | /** |
| 672 | * Send a line to a supplementary debug log file, if configured, or main debug |
| 673 | * log if not. |
| 674 | * |
| 675 | * To configure a supplementary log file, set $wgDebugLogGroups[$logGroup] to |
| 676 | * a string filename or an associative array mapping 'destination' to the |
| 677 | * desired filename. The associative array may also contain a 'sample' key |
| 678 | * with an integer value, specifying a sampling factor. Sampled log events |
| 679 | * will be emitted with a 1 in N random chance. |
| 680 | * |
| 681 | * @since 1.23 support for sampling log messages via $wgDebugLogGroups. |
| 682 | * @since 1.25 support for additional context data |
| 683 | * @since 1.25 sample behavior dependent on configured $wgMWLoggerDefaultSpi |
| 684 | * |
| 685 | * @param string $logGroup |
| 686 | * @param string $text |
| 687 | * @param string|bool $dest Destination of the message: |
| 688 | * - 'all': both to the log and HTML (debug toolbar or HTML comments) |
| 689 | * - 'private': only to the specific log if set in $wgDebugLogGroups and |
| 690 | * discarded otherwise |
| 691 | * For backward compatibility, it can also take a boolean: |
| 692 | * - true: same as 'all' |
| 693 | * - false: same as 'private' |
| 694 | * @param array $context Additional logging context data |
| 695 | */ |
| 696 | function wfDebugLog( |
| 697 | $logGroup, $text, $dest = 'all', array $context = [] |
| 698 | ) { |
| 699 | $text = trim( $text ); |
| 700 | |
| 701 | $logger = LoggerFactory::getInstance( $logGroup ); |
| 702 | $context['private'] = ( $dest === false || $dest === 'private' ); |
| 703 | $logger->info( $text, $context ); |
| 704 | } |
| 705 | |
| 706 | /** |
| 707 | * Log for database errors |
| 708 | * |
| 709 | * @since 1.25 support for additional context data |
| 710 | * |
| 711 | * @param string $text Database error message. |
| 712 | * @param array $context Additional logging context data |
| 713 | */ |
| 714 | function wfLogDBError( $text, array $context = [] ) { |
| 715 | $logger = LoggerFactory::getInstance( 'wfLogDBError' ); |
| 716 | $logger->error( trim( $text ), $context ); |
| 717 | } |
| 718 | |
| 719 | /** |
| 720 | * Logs a warning that a deprecated feature was used. |
| 721 | * |
| 722 | * To write a custom deprecation message, use wfDeprecatedMsg() instead. |
| 723 | * |
| 724 | * @param string $function Feature that is deprecated. |
| 725 | * @param string|false $version Version of MediaWiki that the feature |
| 726 | * was deprecated in (Added in 1.19). |
| 727 | * @param string|bool $component Component to which the feature belongs. |
| 728 | * If false, it is assumed the function is in MediaWiki core (Added in 1.19). |
| 729 | * @param int $callerOffset How far up the call stack is the original |
| 730 | * caller. 2 = function that called the function that called |
| 731 | * wfDeprecated (Added in 1.20). |
| 732 | * @throws InvalidArgumentException If the MediaWiki version |
| 733 | * number specified by $version is neither a string nor false. |
| 734 | */ |
| 735 | function wfDeprecated( $function, $version = false, $component = false, $callerOffset = 2 ) { |
| 736 | if ( !is_string( $version ) && $version !== false ) { |
| 737 | throw new InvalidArgumentException( |
| 738 | "MediaWiki version must either be a string or false. " . |
| 739 | "Example valid version: '1.33'" |
| 740 | ); |
| 741 | } |
| 742 | |
| 743 | MWDebug::deprecated( $function, $version, $component, $callerOffset + 1 ); |
| 744 | } |
| 745 | |
| 746 | /** |
| 747 | * Log a deprecation warning with arbitrary message text. A caller |
| 748 | * description will be appended. If the message has already been sent for |
| 749 | * this caller, it won't be sent again. |
| 750 | * |
| 751 | * Although there are component and version parameters, they are not |
| 752 | * automatically appended to the message. The message text should include |
| 753 | * information about when the thing was deprecated. The component and version |
| 754 | * are just used to implement $wgDeprecationReleaseLimit. |
| 755 | * |
| 756 | * @since 1.35 |
| 757 | * @param string $msg The message |
| 758 | * @param string|false $version Version of MediaWiki that the function |
| 759 | * was deprecated in. |
| 760 | * @param string|bool $component Component to which the function belongs. |
| 761 | * If false, it is assumed the function is in MediaWiki core. |
| 762 | * @param int|false $callerOffset How far up the call stack is the original |
| 763 | * caller. 2 = function that called the function that called us. If false, |
| 764 | * the caller description will not be appended. |
| 765 | */ |
| 766 | function wfDeprecatedMsg( $msg, $version = false, $component = false, $callerOffset = 2 ) { |
| 767 | MWDebug::deprecatedMsg( $msg, $version, $component, |
| 768 | $callerOffset === false ? false : $callerOffset + 1 ); |
| 769 | } |
| 770 | |
| 771 | /** |
| 772 | * Send a warning either to the debug log or in a PHP error depending on |
| 773 | * $wgDevelopmentWarnings. To log warnings in production, use wfLogWarning() instead. |
| 774 | * |
| 775 | * @param string $msg Message to send |
| 776 | * @param int $callerOffset Number of items to go back in the backtrace to |
| 777 | * find the correct caller (1 = function calling wfWarn, ...) |
| 778 | * @param int $level PHP error level; defaults to E_USER_NOTICE; |
| 779 | * only used when $wgDevelopmentWarnings is true |
| 780 | */ |
| 781 | function wfWarn( $msg, $callerOffset = 1, $level = E_USER_NOTICE ) { |
| 782 | MWDebug::warning( $msg, $callerOffset + 1, $level, 'auto' ); |
| 783 | } |
| 784 | |
| 785 | /** |
| 786 | * Send a warning as a PHP error and the debug log. This is intended for logging |
| 787 | * warnings in production. For logging development warnings, use WfWarn instead. |
| 788 | * |
| 789 | * @param string $msg Message to send |
| 790 | * @param int $callerOffset Number of items to go back in the backtrace to |
| 791 | * find the correct caller (1 = function calling wfLogWarning, ...) |
| 792 | * @param int $level PHP error level; defaults to E_USER_WARNING |
| 793 | */ |
| 794 | function wfLogWarning( $msg, $callerOffset = 1, $level = E_USER_WARNING ) { |
| 795 | MWDebug::warning( $msg, $callerOffset + 1, $level, 'production' ); |
| 796 | } |
| 797 | |
| 798 | /** |
| 799 | * This is the function for getting translated interface messages. |
| 800 | * |
| 801 | * @see Message class for documentation how to use them. |
| 802 | * @see https://www.mediawiki.org/wiki/Manual:Messages_API |
| 803 | * |
| 804 | * This function replaces all old wfMsg* functions. |
| 805 | * |
| 806 | * When the MessageSpecifier object is an instance of Message, a clone of the object is returned. |
| 807 | * This is unlike the `new Message( … )` constructor, which returns a new object constructed from |
| 808 | * scratch with the same key. This difference is mostly relevant when the passed object is an |
| 809 | * instance of a subclass like RawMessage or ApiMessage. |
| 810 | * |
| 811 | * @param string|string[]|MessageSpecifier $key Message key, or array of keys, or a MessageSpecifier |
| 812 | * @param MessageParam|MessageSpecifier|string|int|float|list<MessageParam|MessageSpecifier|string|int|float> ...$params |
| 813 | * See Message::params() |
| 814 | * @return Message |
| 815 | * |
| 816 | * @since 1.17 |
| 817 | * |
| 818 | * @see Message::__construct |
| 819 | */ |
| 820 | function wfMessage( $key, ...$params ) { |
| 821 | if ( is_array( $key ) ) { |
| 822 | // Fallback keys are not allowed in message specifiers |
| 823 | $message = wfMessageFallback( ...$key ); |
| 824 | } else { |
| 825 | $message = Message::newFromSpecifier( $key ); |
| 826 | } |
| 827 | |
| 828 | // We call Message::params() to reduce code duplication |
| 829 | if ( $params ) { |
| 830 | $message->params( ...$params ); |
| 831 | } |
| 832 | |
| 833 | return $message; |
| 834 | } |
| 835 | |
| 836 | /** |
| 837 | * This function accepts multiple message keys and returns a message instance |
| 838 | * for the first message which is non-empty. If all messages are empty then an |
| 839 | * instance of the last message key is returned. |
| 840 | * |
| 841 | * @param string ...$keys Message keys |
| 842 | * @return Message |
| 843 | * |
| 844 | * @since 1.18 |
| 845 | * |
| 846 | * @see Message::newFallbackSequence |
| 847 | */ |
| 848 | function wfMessageFallback( ...$keys ) { |
| 849 | return Message::newFallbackSequence( ...$keys ); |
| 850 | } |
| 851 | |
| 852 | /** |
| 853 | * Replace message parameter keys on the given formatted output. |
| 854 | * |
| 855 | * @param string $message |
| 856 | * @param array $args |
| 857 | * @return string |
| 858 | * @internal |
| 859 | */ |
| 860 | function wfMsgReplaceArgs( $message, $args ) { |
| 861 | # Fix windows line-endings |
| 862 | # Some messages are split with explode("\n", $msg) |
| 863 | $message = str_replace( "\r", '', $message ); |
| 864 | |
| 865 | // Replace arguments |
| 866 | if ( is_array( $args ) && $args ) { |
| 867 | if ( is_array( $args[0] ) ) { |
| 868 | $args = array_values( $args[0] ); |
| 869 | } |
| 870 | $replacementKeys = []; |
| 871 | foreach ( $args as $n => $param ) { |
| 872 | $replacementKeys['$' . ( $n + 1 )] = $param; |
| 873 | } |
| 874 | $message = strtr( $message, $replacementKeys ); |
| 875 | } |
| 876 | |
| 877 | return $message; |
| 878 | } |
| 879 | |
| 880 | /** |
| 881 | * Get host name of the current machine, for use in error reporting. |
| 882 | * |
| 883 | * This helps to know which machine in a data center generated the |
| 884 | * current page. |
| 885 | * |
| 886 | * @return string |
| 887 | */ |
| 888 | function wfHostname() { |
| 889 | // Hostname overriding |
| 890 | global $wgOverrideHostname; |
| 891 | if ( $wgOverrideHostname !== false ) { |
| 892 | return $wgOverrideHostname; |
| 893 | } |
| 894 | |
| 895 | return php_uname( 'n' ) ?: 'unknown'; |
| 896 | } |
| 897 | |
| 898 | /** |
| 899 | * Safety wrapper for debug_backtrace(). |
| 900 | * |
| 901 | * Will return an empty array if debug_backtrace is disabled, otherwise |
| 902 | * the output from debug_backtrace() (trimmed). |
| 903 | * |
| 904 | * @param int $limit This parameter can be used to limit the number of stack frames returned |
| 905 | * |
| 906 | * @return array Array of backtrace information |
| 907 | */ |
| 908 | function wfDebugBacktrace( $limit = 0 ) { |
| 909 | static $disabled = null; |
| 910 | |
| 911 | if ( $disabled === null ) { |
| 912 | $disabled = !function_exists( 'debug_backtrace' ); |
| 913 | if ( $disabled ) { |
| 914 | wfDebug( "debug_backtrace() is disabled" ); |
| 915 | } |
| 916 | } |
| 917 | if ( $disabled ) { |
| 918 | return []; |
| 919 | } |
| 920 | |
| 921 | if ( $limit ) { |
| 922 | return array_slice( debug_backtrace( DEBUG_BACKTRACE_PROVIDE_OBJECT, $limit + 1 ), 1 ); |
| 923 | } else { |
| 924 | return array_slice( debug_backtrace(), 1 ); |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | /** |
| 929 | * Get a debug backtrace as a string |
| 930 | * |
| 931 | * @param bool|null $raw If true, the return value is plain text. If false, HTML. |
| 932 | * Defaults to true if MW_ENTRY_POINT is 'cli', otherwise false. |
| 933 | * @return string |
| 934 | * @since 1.25 Supports $raw parameter. |
| 935 | */ |
| 936 | function wfBacktrace( $raw = null ) { |
| 937 | $raw ??= MW_ENTRY_POINT === 'cli'; |
| 938 | if ( $raw ) { |
| 939 | $frameFormat = "%s line %s calls %s()\n"; |
| 940 | $traceFormat = "%s"; |
| 941 | } else { |
| 942 | $frameFormat = "<li>%s line %s calls %s()</li>\n"; |
| 943 | $traceFormat = "<ul>\n%s</ul>\n"; |
| 944 | } |
| 945 | |
| 946 | $frames = array_map( static function ( $frame ) use ( $frameFormat ) { |
| 947 | $file = !empty( $frame['file'] ) ? basename( $frame['file'] ) : '-'; |
| 948 | $line = $frame['line'] ?? '-'; |
| 949 | $call = $frame['function']; |
| 950 | if ( !empty( $frame['class'] ) ) { |
| 951 | $call = $frame['class'] . $frame['type'] . $call; |
| 952 | } |
| 953 | return sprintf( $frameFormat, $file, $line, $call ); |
| 954 | }, wfDebugBacktrace() ); |
| 955 | |
| 956 | return sprintf( $traceFormat, implode( '', $frames ) ); |
| 957 | } |
| 958 | |
| 959 | /** |
| 960 | * Get the name of the function which called this function |
| 961 | * wfGetCaller( 1 ) is the function with the wfGetCaller() call (ie. __FUNCTION__) |
| 962 | * wfGetCaller( 2 ) [default] is the caller of the function running wfGetCaller() |
| 963 | * wfGetCaller( 3 ) is the parent of that. |
| 964 | * |
| 965 | * The format will be the same as for {@see wfFormatStackFrame()}. |
| 966 | * @param int $level |
| 967 | * @return string function name or 'unknown' |
| 968 | */ |
| 969 | function wfGetCaller( $level = 2 ) { |
| 970 | $backtrace = wfDebugBacktrace( $level + 1 ); |
| 971 | if ( isset( $backtrace[$level] ) ) { |
| 972 | return wfFormatStackFrame( $backtrace[$level] ); |
| 973 | } else { |
| 974 | return 'unknown'; |
| 975 | } |
| 976 | } |
| 977 | |
| 978 | /** |
| 979 | * Return a string consisting of callers in the stack. Useful sometimes |
| 980 | * for profiling specific points. |
| 981 | * |
| 982 | * @param int|false $limit The maximum depth of the stack frame to return, or false for the entire stack. |
| 983 | * @return string |
| 984 | */ |
| 985 | function wfGetAllCallers( $limit = 3 ) { |
| 986 | $limit = $limit ? $limit + 1 : 0; |
| 987 | // Strip the own "wfGetAllCallers" from the list |
| 988 | $trace = array_reverse( array_slice( wfDebugBacktrace( $limit ), 1 ) ); |
| 989 | return implode( '/', array_map( wfFormatStackFrame( ... ), $trace ) ); |
| 990 | } |
| 991 | |
| 992 | /** |
| 993 | * Return a string representation of frame |
| 994 | * |
| 995 | * Typically, the returned value will be in one of these formats: |
| 996 | * - method |
| 997 | * - Fully\Qualified\method |
| 998 | * - Fully\Qualified\Class->method |
| 999 | * - Fully\Qualified\Class::method |
| 1000 | * |
| 1001 | * @param array $frame |
| 1002 | * @return string |
| 1003 | */ |
| 1004 | function wfFormatStackFrame( $frame ) { |
| 1005 | if ( !isset( $frame['function'] ) ) { |
| 1006 | return 'NO_FUNCTION_GIVEN'; |
| 1007 | } |
| 1008 | return isset( $frame['class'] ) && isset( $frame['type'] ) ? |
| 1009 | $frame['class'] . $frame['type'] . $frame['function'] : |
| 1010 | $frame['function']; |
| 1011 | } |
| 1012 | |
| 1013 | /** |
| 1014 | * Whether the client accept gzip encoding |
| 1015 | * |
| 1016 | * Uses the Accept-Encoding header to check if the client supports gzip encoding. |
| 1017 | * Use this when considering to send a gzip-encoded response to the client. |
| 1018 | * |
| 1019 | * @param bool $force Forces another check even if we already have a cached result. |
| 1020 | * @return bool |
| 1021 | */ |
| 1022 | function wfClientAcceptsGzip( $force = false ) { |
| 1023 | static $result = null; |
| 1024 | if ( $result === null || $force ) { |
| 1025 | $result = false; |
| 1026 | if ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) { |
| 1027 | # @todo FIXME: We may want to disallow some broken browsers |
| 1028 | $m = []; |
| 1029 | if ( preg_match( |
| 1030 | '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/', |
| 1031 | $_SERVER['HTTP_ACCEPT_ENCODING'], |
| 1032 | $m |
| 1033 | ) |
| 1034 | ) { |
| 1035 | if ( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) { |
| 1036 | return $result; |
| 1037 | } |
| 1038 | wfDebug( "wfClientAcceptsGzip: client accepts gzip." ); |
| 1039 | $result = true; |
| 1040 | } |
| 1041 | } |
| 1042 | } |
| 1043 | return $result; |
| 1044 | } |
| 1045 | |
| 1046 | /** |
| 1047 | * Escapes the given text so that it may be output using addWikiText() |
| 1048 | * without any linking, formatting, etc. making its way through. This |
| 1049 | * is achieved by substituting certain characters with HTML entities. |
| 1050 | * As required by the callers, "<nowiki>" is not used. |
| 1051 | * |
| 1052 | * @param string|null|false $input Text to be escaped |
| 1053 | * @param-taint $input escapes_html |
| 1054 | * @return string |
| 1055 | */ |
| 1056 | function wfEscapeWikiText( $input ): string { |
| 1057 | global $wgEnableMagicLinks; |
| 1058 | static $repl = null, $repl2 = null, $repl3 = null, $repl4 = null; |
| 1059 | if ( $repl === null || defined( 'MW_PHPUNIT_TEST' ) ) { |
| 1060 | // Tests depend upon being able to change $wgEnableMagicLinks, so don't cache |
| 1061 | // in those situations |
| 1062 | $repl = [ |
| 1063 | '"' => '"', '&' => '&', "'" => ''', '<' => '<', |
| 1064 | '=' => '=', '>' => '>', '[' => '[', ']' => ']', |
| 1065 | '{' => '{', '|' => '|', '}' => '}', |
| 1066 | ';' => ';', // a token inside language converter brackets |
| 1067 | '!!' => '!!', // a token inside table context |
| 1068 | "\n!" => "\n!", "\r!" => "\r!", // a token inside table context |
| 1069 | "\n#" => "\n#", "\r#" => "\r#", |
| 1070 | "\n*" => "\n*", "\r*" => "\r*", |
| 1071 | "\n:" => "\n:", "\r:" => "\r:", |
| 1072 | "\n " => "\n ", "\r " => "\r ", |
| 1073 | "\n\n" => "\n ", "\r\n" => " \n", |
| 1074 | "\n\r" => "\n ", "\r\r" => "\r ", |
| 1075 | "\n\t" => "\n	", "\r\t" => "\r	", // "\n\t\n" is treated like "\n\n" |
| 1076 | "\n----" => "\n----", "\r----" => "\r----", |
| 1077 | '__' => '__', '://' => '://', |
| 1078 | // Japanese magic words start w/ wide underscore |
| 1079 | '＿' => '＿', |
| 1080 | '~~~' => '~~~', // protect from PST, just to be safe(r) |
| 1081 | ]; |
| 1082 | |
| 1083 | $magicLinks = array_keys( array_filter( $wgEnableMagicLinks ) ); |
| 1084 | // We have to catch everything "\s" matches in PCRE |
| 1085 | foreach ( $magicLinks as $magic ) { |
| 1086 | $repl["$magic "] = "$magic "; |
| 1087 | $repl["$magic\t"] = "$magic	"; |
| 1088 | $repl["$magic\r"] = "$magic "; |
| 1089 | $repl["$magic\n"] = "$magic "; |
| 1090 | $repl["$magic\f"] = "$magic"; |
| 1091 | } |
| 1092 | // Additionally escape the following characters at the beginning of the |
| 1093 | // string, in case they merge to form tokens when spliced into a |
| 1094 | // string. Tokens like -{ {{ [[ {| etc are already escaped because |
| 1095 | // the second character is escaped above, but the following tokens |
| 1096 | // are handled here: |+ |- __FOO__ ~~~ |
| 1097 | // (Only single-byte characters can go here; multibyte characters |
| 1098 | // like 'wide underscore' must go into $repl above.) |
| 1099 | $repl3 = [ |
| 1100 | '+' => '+', '-' => '-', '_' => '_', '~' => '~', |
| 1101 | ]; |
| 1102 | // Similarly, protect the following characters at the end of the |
| 1103 | // string, which could turn form the start of `__FOO__` or `~~~~` |
| 1104 | // A trailing newline could also form the unintended start of a |
| 1105 | // paragraph break if it is glued to a newline in the following |
| 1106 | // context. Again, only single-byte characters can be protected |
| 1107 | // here; 'wide underscore' is protected by $repl above. |
| 1108 | $repl4 = [ |
| 1109 | '_' => '_', '~' => '~', |
| 1110 | "\n" => " ", "\r" => " ", |
| 1111 | "\t" => "	", // "\n\t\n" is treated like "\n\n" |
| 1112 | ]; |
| 1113 | |
| 1114 | // And handle protocols that don't use "://" |
| 1115 | global $wgUrlProtocols; |
| 1116 | $repl2 = []; |
| 1117 | foreach ( $wgUrlProtocols as $prot ) { |
| 1118 | if ( substr( $prot, -1 ) === ':' ) { |
| 1119 | $repl2[] = preg_quote( substr( $prot, 0, -1 ), '/' ); |
| 1120 | } |
| 1121 | } |
| 1122 | $repl2 = $repl2 ? '/\b(' . implode( '|', $repl2 ) . '):/i' : '/^(?!)/'; |
| 1123 | } |
| 1124 | // Tell phan that $repl2, $repl3 and $repl4 will also be non-null here |
| 1125 | '@phan-var string $repl2'; |
| 1126 | '@phan-var string $repl3'; |
| 1127 | '@phan-var string $repl4'; |
| 1128 | // This will also stringify input in case it's not a string |
| 1129 | $text = substr( strtr( "\n$input", $repl ), 1 ); |
| 1130 | if ( $text === '' ) { |
| 1131 | return $text; |
| 1132 | } |
| 1133 | $first = strtr( $text[0], $repl3 ); // protect first character |
| 1134 | if ( strlen( $text ) > 1 ) { |
| 1135 | $text = $first . substr( $text, 1, -1 ) . |
| 1136 | strtr( substr( $text, -1 ), $repl4 ); // protect last character |
| 1137 | } else { |
| 1138 | // special case for single-character strings |
| 1139 | $text = strtr( $first, $repl4 ); // protect last character |
| 1140 | } |
| 1141 | $text = preg_replace( $repl2, '$1:', $text ); |
| 1142 | return $text; |
| 1143 | } |
| 1144 | |
| 1145 | /** |
| 1146 | * Sets dest to source and returns the original value of dest |
| 1147 | * If source is NULL, it just returns the value, it doesn't set the variable |
| 1148 | * If force is true, it will set the value even if source is NULL |
| 1149 | * |
| 1150 | * @param mixed &$dest |
| 1151 | * @param mixed $source |
| 1152 | * @param bool $force |
| 1153 | * @return mixed |
| 1154 | */ |
| 1155 | function wfSetVar( &$dest, $source, $force = false ) { |
| 1156 | $temp = $dest; |
| 1157 | if ( $source !== null || $force ) { |
| 1158 | $dest = $source; |
| 1159 | } |
| 1160 | return $temp; |
| 1161 | } |
| 1162 | |
| 1163 | /** |
| 1164 | * As for wfSetVar except setting a bit |
| 1165 | * |
| 1166 | * @param int &$dest |
| 1167 | * @param int $bit |
| 1168 | * @param bool $state |
| 1169 | * |
| 1170 | * @return bool |
| 1171 | */ |
| 1172 | function wfSetBit( &$dest, $bit, $state = true ) { |
| 1173 | $temp = (bool)( $dest & $bit ); |
| 1174 | if ( $state !== null ) { |
| 1175 | if ( $state ) { |
| 1176 | $dest |= $bit; |
| 1177 | } else { |
| 1178 | $dest &= ~$bit; |
| 1179 | } |
| 1180 | } |
| 1181 | return $temp; |
| 1182 | } |
| 1183 | |
| 1184 | /** |
| 1185 | * A wrapper around the PHP function var_export(). |
| 1186 | * Either print it or add it to the regular output ($wgOut). |
| 1187 | * |
| 1188 | * @param mixed $var A PHP variable to dump. |
| 1189 | */ |
| 1190 | function wfVarDump( $var ) { |
| 1191 | global $wgOut; |
| 1192 | $s = str_replace( "\n", "<br />\n", var_export( $var, true ) . "\n" ); |
| 1193 | if ( headers_sent() || $wgOut === null || !is_object( $wgOut ) ) { |
| 1194 | print $s; |
| 1195 | } else { |
| 1196 | $wgOut->addHTML( $s ); |
| 1197 | } |
| 1198 | } |
| 1199 | |
| 1200 | /** |
| 1201 | * Provide a simple HTTP error. |
| 1202 | * |
| 1203 | * @param int|string $code |
| 1204 | * @param string $label |
| 1205 | * @param string $desc |
| 1206 | */ |
| 1207 | function wfHttpError( $code, $label, $desc ) { |
| 1208 | global $wgOut; |
| 1209 | HttpStatus::header( $code ); |
| 1210 | if ( $wgOut ) { |
| 1211 | $wgOut->disable(); |
| 1212 | $wgOut->sendCacheControl(); |
| 1213 | } |
| 1214 | |
| 1215 | \MediaWiki\Request\HeaderCallback::warnIfHeadersSent(); |
| 1216 | header( 'Content-type: text/html; charset=utf-8' ); |
| 1217 | ContentSecurityPolicy::sendRestrictiveHeader(); |
| 1218 | ob_start(); |
| 1219 | print '<!DOCTYPE html>' . |
| 1220 | '<html><head><title>' . |
| 1221 | htmlspecialchars( $label ) . |
| 1222 | '</title><meta name="color-scheme" content="light dark" /></head><body><h1>' . |
| 1223 | htmlspecialchars( $label ) . |
| 1224 | '</h1><p>' . |
| 1225 | nl2br( htmlspecialchars( $desc ) ) . |
| 1226 | "</p></body></html>\n"; |
| 1227 | header( 'Content-Length: ' . ob_get_length() ); |
| 1228 | ob_end_flush(); |
| 1229 | } |
| 1230 | |
| 1231 | /** |
| 1232 | * Clear away any user-level output buffers, discarding contents. |
| 1233 | * |
| 1234 | * Suitable for 'starting afresh', for instance when streaming |
| 1235 | * relatively large amounts of data without buffering, or wanting to |
| 1236 | * output image files without ob_gzhandler's compression. |
| 1237 | * |
| 1238 | * The optional $resetGzipEncoding parameter controls suppression of |
| 1239 | * the Content-Encoding header sent by ob_gzhandler; by default it |
| 1240 | * is left. This should be used for HTTP 304 responses, where you need to |
| 1241 | * preserve the Content-Encoding header of the real result, but |
| 1242 | * also need to suppress the output of ob_gzhandler to keep to spec |
| 1243 | * and avoid breaking Firefox in rare cases where the headers and |
| 1244 | * body are broken over two packets. |
| 1245 | * |
| 1246 | * Note that some PHP configuration options may add output buffer |
| 1247 | * layers which cannot be removed; these are left in place. |
| 1248 | * |
| 1249 | * @param bool $resetGzipEncoding |
| 1250 | */ |
| 1251 | function wfResetOutputBuffers( $resetGzipEncoding = true ) { |
| 1252 | // phpcs:ignore Generic.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition |
| 1253 | while ( $status = ob_get_status() ) { |
| 1254 | if ( isset( $status['flags'] ) ) { |
| 1255 | $flags = PHP_OUTPUT_HANDLER_CLEANABLE | PHP_OUTPUT_HANDLER_REMOVABLE; |
| 1256 | $deleteable = ( $status['flags'] & $flags ) === $flags; |
| 1257 | } elseif ( isset( $status['del'] ) ) { |
| 1258 | $deleteable = $status['del']; |
| 1259 | } else { |
| 1260 | // Guess that any PHP-internal setting can't be removed. |
| 1261 | $deleteable = $status['type'] !== 0; /* PHP_OUTPUT_HANDLER_INTERNAL */ |
| 1262 | } |
| 1263 | if ( !$deleteable ) { |
| 1264 | // Give up, and hope the result doesn't break |
| 1265 | // output behavior. |
| 1266 | break; |
| 1267 | } |
| 1268 | if ( $status['name'] === 'MediaWikiIntegrationTestCase::wfResetOutputBuffersBarrier' ) { |
| 1269 | // Unit testing barrier to prevent this function from breaking PHPUnit. |
| 1270 | break; |
| 1271 | } |
| 1272 | if ( !ob_end_clean() ) { |
| 1273 | // Could not remove output buffer handler; abort now |
| 1274 | // to avoid getting in some kind of infinite loop. |
| 1275 | break; |
| 1276 | } |
| 1277 | if ( $resetGzipEncoding && $status['name'] == 'ob_gzhandler' ) { |
| 1278 | // Reset the 'Content-Encoding' field set by this handler |
| 1279 | // so we can start fresh. |
| 1280 | header_remove( 'Content-Encoding' ); |
| 1281 | break; |
| 1282 | } |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | /** |
| 1287 | * Get a timestamp string in one of various formats |
| 1288 | * |
| 1289 | * @param int|TS $outputtype Output format, one of the TS::* constants. Defaults to |
| 1290 | * Unix timestamp. |
| 1291 | * @param mixed $ts A timestamp in any supported format. The |
| 1292 | * function will autodetect which format is supplied and act accordingly. Use 0 or |
| 1293 | * omit to use current time |
| 1294 | * @return string|false The date in the specified format, or false on error. |
| 1295 | */ |
| 1296 | function wfTimestamp( $outputtype = TS::UNIX, $ts = 0 ) { |
| 1297 | $ret = ConvertibleTimestamp::convert( $outputtype, $ts ); |
| 1298 | if ( $ret === false ) { |
| 1299 | if ( $outputtype instanceof TS ) { |
| 1300 | $outputtype = $outputtype->name; |
| 1301 | } |
| 1302 | wfDebug( "wfTimestamp() fed bogus time value: TYPE=$outputtype; VALUE=$ts" ); |
| 1303 | } |
| 1304 | return $ret; |
| 1305 | } |
| 1306 | |
| 1307 | /** |
| 1308 | * Return a formatted timestamp, or null if input is null. |
| 1309 | * For dealing with nullable timestamp columns in the database. |
| 1310 | * |
| 1311 | * @param mixed $outputtype |
| 1312 | * @param mixed|null $ts |
| 1313 | * @return string|false|null Null if called with null, otherwise the result of wfTimestamp() |
| 1314 | */ |
| 1315 | function wfTimestampOrNull( $outputtype = TS::UNIX, $ts = null ) { |
| 1316 | if ( $ts === null ) { |
| 1317 | return null; |
| 1318 | } else { |
| 1319 | return wfTimestamp( $outputtype, $ts ); |
| 1320 | } |
| 1321 | } |
| 1322 | |
| 1323 | /** |
| 1324 | * Convenience function; returns MediaWiki timestamp for the present time. |
| 1325 | * |
| 1326 | * @return string TS::MW timestamp |
| 1327 | */ |
| 1328 | function wfTimestampNow() { |
| 1329 | return ConvertibleTimestamp::now( TS::MW ); |
| 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * Tries to get the system directory for temporary files. First |
| 1334 | * $wgTmpDirectory is checked, and then the TMPDIR, TMP, and TEMP |
| 1335 | * environment variables are then checked in sequence, then |
| 1336 | * sys_get_temp_dir(), then upload_tmp_dir from php.ini. |
| 1337 | * |
| 1338 | * NOTE: When possible, use instead the tmpfile() function to create |
| 1339 | * temporary files to avoid race conditions on file creation, etc. |
| 1340 | * |
| 1341 | * @return string |
| 1342 | */ |
| 1343 | function wfTempDir() { |
| 1344 | global $wgTmpDirectory; |
| 1345 | |
| 1346 | if ( $wgTmpDirectory !== false ) { |
| 1347 | return $wgTmpDirectory; |
| 1348 | } |
| 1349 | |
| 1350 | return TempFSFile::getUsableTempDirectory(); |
| 1351 | } |
| 1352 | |
| 1353 | /** |
| 1354 | * Make directory, and make all parent directories if they don't exist |
| 1355 | * |
| 1356 | * @param string $dir Full path to directory to create. Callers should make sure this is not a storage path. |
| 1357 | * @param int|null $mode Chmod value to use, default is $wgDirectoryMode |
| 1358 | * @param string|null $caller Optional caller param for debugging. |
| 1359 | * @return bool |
| 1360 | */ |
| 1361 | function wfMkdirParents( $dir, $mode = null, $caller = null ) { |
| 1362 | global $wgDirectoryMode; |
| 1363 | |
| 1364 | if ( FileBackend::isStoragePath( $dir ) ) { |
| 1365 | throw new LogicException( __FUNCTION__ . " given storage path '$dir'." ); |
| 1366 | } |
| 1367 | if ( $caller !== null ) { |
| 1368 | wfDebug( "$caller: called wfMkdirParents($dir)" ); |
| 1369 | } |
| 1370 | if ( strval( $dir ) === '' ) { |
| 1371 | return true; |
| 1372 | } |
| 1373 | |
| 1374 | $dir = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $dir ); |
| 1375 | $mode ??= $wgDirectoryMode; |
| 1376 | |
| 1377 | // Turn off the normal warning, we're doing our own below |
| 1378 | // PHP doesn't include the path in its warning message, so we add our own to aid in diagnosis. |
| 1379 | // |
| 1380 | // Repeat existence check if creation failed so that we silently recover in case of |
| 1381 | // a race condition where another request created it since the first check. |
| 1382 | // |
| 1383 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 1384 | $ok = is_dir( $dir ) || @mkdir( $dir, $mode, true ) || is_dir( $dir ); |
| 1385 | if ( !$ok ) { |
| 1386 | trigger_error( sprintf( "failed to mkdir \"%s\" mode 0%o", $dir, $mode ), E_USER_WARNING ); |
| 1387 | } |
| 1388 | |
| 1389 | return $ok; |
| 1390 | } |
| 1391 | |
| 1392 | /** |
| 1393 | * Remove a directory and all its content. |
| 1394 | * Does not hide error. |
| 1395 | * @param string $dir |
| 1396 | */ |
| 1397 | function wfRecursiveRemoveDir( $dir ) { |
| 1398 | // taken from https://www.php.net/manual/en/function.rmdir.php#98622 |
| 1399 | if ( is_dir( $dir ) ) { |
| 1400 | $objects = scandir( $dir ); |
| 1401 | foreach ( $objects as $object ) { |
| 1402 | if ( $object != "." && $object != ".." ) { |
| 1403 | if ( filetype( $dir . '/' . $object ) == "dir" ) { |
| 1404 | wfRecursiveRemoveDir( $dir . '/' . $object ); |
| 1405 | } else { |
| 1406 | unlink( $dir . '/' . $object ); |
| 1407 | } |
| 1408 | } |
| 1409 | } |
| 1410 | rmdir( $dir ); |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | /** |
| 1415 | * @param float|int $nr The number to format |
| 1416 | * @param int $acc The number of digits after the decimal point, default 2 |
| 1417 | * @param bool $round Whether or not to round the value, default true |
| 1418 | * @return string |
| 1419 | */ |
| 1420 | function wfPercent( $nr, int $acc = 2, bool $round = true ) { |
| 1421 | $accForFormat = $acc >= 0 ? $acc : 0; |
| 1422 | $ret = sprintf( "%.{$accForFormat}f", $nr ); |
| 1423 | return $round ? round( (float)$ret, $acc ) . '%' : "$ret%"; |
| 1424 | } |
| 1425 | |
| 1426 | /** |
| 1427 | * Safety wrapper around ini_get() for boolean settings. |
| 1428 | * The values returned from ini_get() are pre-normalized for settings |
| 1429 | * set via php.ini or php_flag/php_admin_flag... but *not* |
| 1430 | * for those set via php_value/php_admin_value. |
| 1431 | * |
| 1432 | * It's fairly common for people to use php_value instead of php_flag, |
| 1433 | * which can leave you with an 'off' setting giving a false positive |
| 1434 | * for code that just takes the ini_get() return value as a boolean. |
| 1435 | * |
| 1436 | * To make things extra interesting, setting via php_value accepts |
| 1437 | * "true" and "yes" as true, but php.ini and php_flag consider them false. :) |
| 1438 | * Unrecognized values go false... again opposite PHP's own coercion |
| 1439 | * from string to bool. |
| 1440 | * |
| 1441 | * Luckily, 'properly' set settings will always come back as '0' or '1', |
| 1442 | * so we only have to worry about them and the 'improper' settings. |
| 1443 | * |
| 1444 | * I frickin' hate PHP... :P |
| 1445 | * |
| 1446 | * @param string $setting |
| 1447 | * @return bool |
| 1448 | */ |
| 1449 | function wfIniGetBool( $setting ) { |
| 1450 | return wfStringToBool( ini_get( $setting ) ); |
| 1451 | } |
| 1452 | |
| 1453 | /** |
| 1454 | * Convert string value to boolean, when the following are interpreted as true: |
| 1455 | * - on |
| 1456 | * - true |
| 1457 | * - yes |
| 1458 | * - Any number, except 0 |
| 1459 | * All other strings are interpreted as false. |
| 1460 | * |
| 1461 | * @param string $val |
| 1462 | * @return bool |
| 1463 | * @since 1.31 |
| 1464 | */ |
| 1465 | function wfStringToBool( $val ) { |
| 1466 | $val = strtolower( $val ); |
| 1467 | // 'on' and 'true' can't have whitespace around them, but '1' can. |
| 1468 | return $val == 'on' |
| 1469 | || $val == 'true' |
| 1470 | || $val == 'yes' |
| 1471 | || preg_match( "/^\s*[+-]?0*[1-9]/", $val ); // approx C atoi() function |
| 1472 | } |
| 1473 | |
| 1474 | /** |
| 1475 | * Locale-independent version of escapeshellarg() |
| 1476 | * |
| 1477 | * Originally, this fixed the incorrect use of single quotes on Windows |
| 1478 | * (https://bugs.php.net/bug.php?id=26285) and the locale problems on Linux in |
| 1479 | * PHP 5.2.6+ (https://bugs.php.net/bug.php?id=54391). The second bug is still |
| 1480 | * open as of 2021. |
| 1481 | * |
| 1482 | * @param string|string[] ...$args strings to escape and glue together, |
| 1483 | * or a single array of strings parameter |
| 1484 | * @return string |
| 1485 | * @deprecated since 1.30 use MediaWiki\Shell\Shell::escape() |
| 1486 | */ |
| 1487 | function wfEscapeShellArg( ...$args ) { |
| 1488 | return Shell::escape( ...$args ); |
| 1489 | } |
| 1490 | |
| 1491 | /** |
| 1492 | * Execute a shell command, with time and memory limits mirrored from the PHP |
| 1493 | * configuration if supported. |
| 1494 | * |
| 1495 | * @param string|string[] $cmd If string, a properly shell-escaped command line, |
| 1496 | * or an array of unescaped arguments, in which case each value will be escaped |
| 1497 | * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'" |
| 1498 | * @param null|mixed &$retval Optional, will receive the program's exit code. |
| 1499 | * (non-zero is usually failure). If there is an error from |
| 1500 | * read, select, or proc_open(), this will be set to -1. |
| 1501 | * @param array $environ Optional environment variables which should be |
| 1502 | * added to the executed command environment. |
| 1503 | * @param array $limits Optional array with limits(filesize, memory, time, walltime) |
| 1504 | * this overwrites the global wgMaxShell* limits. |
| 1505 | * @param array $options Array of options: |
| 1506 | * - duplicateStderr: Set this to true to duplicate stderr to stdout, |
| 1507 | * including errors from limit.sh |
| 1508 | * - profileMethod: By default this function will profile based on the calling |
| 1509 | * method. Set this to a string for an alternative method to profile from |
| 1510 | * @phan-param array{duplicateStderr?:bool,profileMethod?:string} $options |
| 1511 | * |
| 1512 | * @return string Collected stdout as a string |
| 1513 | * @deprecated since 1.30 use class MediaWiki\Shell\Shell |
| 1514 | */ |
| 1515 | function wfShellExec( $cmd, &$retval = null, $environ = [], |
| 1516 | $limits = [], $options = [] |
| 1517 | ) { |
| 1518 | if ( Shell::isDisabled() ) { |
| 1519 | $retval = 1; |
| 1520 | // Backwards compatibility be upon us... |
| 1521 | return 'Unable to run external programs, proc_open() is disabled.'; |
| 1522 | } |
| 1523 | |
| 1524 | if ( is_array( $cmd ) ) { |
| 1525 | $cmd = Shell::escape( $cmd ); |
| 1526 | } |
| 1527 | |
| 1528 | $includeStderr = isset( $options['duplicateStderr'] ) && $options['duplicateStderr']; |
| 1529 | $profileMethod = $options['profileMethod'] ?? wfGetCaller(); |
| 1530 | |
| 1531 | try { |
| 1532 | $result = Shell::command( [] ) |
| 1533 | ->unsafeParams( (array)$cmd ) |
| 1534 | ->environment( $environ ) |
| 1535 | ->limits( $limits ) |
| 1536 | ->includeStderr( $includeStderr ) |
| 1537 | ->profileMethod( $profileMethod ) |
| 1538 | // For b/c |
| 1539 | ->restrict( Shell::RESTRICT_NONE ) |
| 1540 | ->execute(); |
| 1541 | } catch ( ProcOpenError ) { |
| 1542 | $retval = -1; |
| 1543 | return ''; |
| 1544 | } |
| 1545 | |
| 1546 | $retval = $result->getExitCode(); |
| 1547 | |
| 1548 | return $result->getStdout(); |
| 1549 | } |
| 1550 | |
| 1551 | /** |
| 1552 | * Execute a shell command, returning both stdout and stderr. Convenience |
| 1553 | * function, as all the arguments to wfShellExec can become unwieldy. |
| 1554 | * |
| 1555 | * @note This also includes errors from limit.sh, e.g. if $wgMaxShellFileSize is exceeded. |
| 1556 | * @param string|string[] $cmd If string, a properly shell-escaped command line, |
| 1557 | * or an array of unescaped arguments, in which case each value will be escaped |
| 1558 | * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'" |
| 1559 | * @param null|mixed &$retval Optional, will receive the program's exit code. |
| 1560 | * (non-zero is usually failure) |
| 1561 | * @param array $environ Optional environment variables which should be |
| 1562 | * added to the executed command environment. |
| 1563 | * @param array $limits Optional array with limits(filesize, memory, time, walltime) |
| 1564 | * this overwrites the global wgMaxShell* limits. |
| 1565 | * @return string Collected stdout and stderr as a string |
| 1566 | * @deprecated since 1.30 use class MediaWiki\Shell\Shell |
| 1567 | */ |
| 1568 | function wfShellExecWithStderr( $cmd, &$retval = null, $environ = [], $limits = [] ) { |
| 1569 | return wfShellExec( $cmd, $retval, $environ, $limits, |
| 1570 | [ 'duplicateStderr' => true, 'profileMethod' => wfGetCaller() ] ); |
| 1571 | } |
| 1572 | |
| 1573 | /** |
| 1574 | * Generate a shell-escaped command line string to run a MediaWiki cli script. |
| 1575 | * Note that $parameters should be a flat array and an option with an argument |
| 1576 | * should consist of two consecutive items in the array (do not use "--option value"). |
| 1577 | * |
| 1578 | * @deprecated since 1.31, use Shell::makeScriptCommand() |
| 1579 | * |
| 1580 | * @param string $script MediaWiki cli script path |
| 1581 | * @param array $parameters Arguments and options to the script |
| 1582 | * @param array $options Associative array of options: |
| 1583 | * 'php': The path to the php executable |
| 1584 | * 'wrapper': Path to a PHP wrapper to handle the maintenance script |
| 1585 | * @phan-param array{php?:string,wrapper?:string} $options |
| 1586 | * @return string |
| 1587 | */ |
| 1588 | function wfShellWikiCmd( $script, array $parameters = [], array $options = [] ) { |
| 1589 | global $wgPhpCli; |
| 1590 | // Give site config file a chance to run the script in a wrapper. |
| 1591 | // The caller may likely want to call wfBasename() on $script. |
| 1592 | ( new HookRunner( MediaWikiServices::getInstance()->getHookContainer() ) ) |
| 1593 | ->onWfShellWikiCmd( $script, $parameters, $options ); |
| 1594 | $cmd = [ $options['php'] ?? $wgPhpCli ]; |
| 1595 | if ( isset( $options['wrapper'] ) ) { |
| 1596 | $cmd[] = $options['wrapper']; |
| 1597 | } |
| 1598 | $cmd[] = $script; |
| 1599 | // Escape each parameter for shell |
| 1600 | return Shell::escape( array_merge( $cmd, $parameters ) ); |
| 1601 | } |
| 1602 | |
| 1603 | /** |
| 1604 | * wfMerge attempts to merge differences between three texts. |
| 1605 | * |
| 1606 | * @param string $old Common base revision |
| 1607 | * @param string $mine The edit we wish to store but which potentially conflicts with another edit |
| 1608 | * which happened since we started editing. |
| 1609 | * @param string $yours The most recent stored revision of the article. Note that "mine" and "yours" |
| 1610 | * might have another meaning depending on the specific use case. |
| 1611 | * @param string|null &$simplisticMergeAttempt Automatically merged text, with overlapping edits |
| 1612 | * falling back to "my" text. |
| 1613 | * @param string|null &$mergeLeftovers Optional out parameter containing an "ed" script with the |
| 1614 | * remaining bits of "your" text that could not be merged into $simplisticMergeAttempt. |
| 1615 | * The "ed" file format is documented here: |
| 1616 | * https://www.gnu.org/software/diffutils/manual/html_node/Detailed-ed.html |
| 1617 | * @return bool true for a clean merge and false for failure or a conflict. |
| 1618 | */ |
| 1619 | function wfMerge( |
| 1620 | string $old, |
| 1621 | string $mine, |
| 1622 | string $yours, |
| 1623 | ?string &$simplisticMergeAttempt, |
| 1624 | ?string &$mergeLeftovers = null |
| 1625 | ): bool { |
| 1626 | global $wgDiff3; |
| 1627 | |
| 1628 | # This check may also protect against code injection in |
| 1629 | # case of broken installations. |
| 1630 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 1631 | $haveDiff3 = $wgDiff3 && @file_exists( $wgDiff3 ); |
| 1632 | |
| 1633 | if ( !$haveDiff3 ) { |
| 1634 | wfDebug( "diff3 not found" ); |
| 1635 | return false; |
| 1636 | } |
| 1637 | |
| 1638 | # Make temporary files |
| 1639 | $td = wfTempDir(); |
| 1640 | $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' ); |
| 1641 | $mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' ); |
| 1642 | $yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' ); |
| 1643 | |
| 1644 | # NOTE: diff3 issues a warning to stderr if any of the files does not end with |
| 1645 | # a newline character. To avoid this, we normalize the trailing whitespace before |
| 1646 | # creating the diff. |
| 1647 | |
| 1648 | fwrite( $oldtextFile, rtrim( $old ) . "\n" ); |
| 1649 | fclose( $oldtextFile ); |
| 1650 | fwrite( $mytextFile, rtrim( $mine ) . "\n" ); |
| 1651 | fclose( $mytextFile ); |
| 1652 | fwrite( $yourtextFile, rtrim( $yours ) . "\n" ); |
| 1653 | fclose( $yourtextFile ); |
| 1654 | |
| 1655 | # Check for a conflict |
| 1656 | $cmd = Shell::escape( $wgDiff3, '--text', '--overlap-only', $mytextName, |
| 1657 | $oldtextName, $yourtextName ); |
| 1658 | $handle = popen( $cmd, 'r' ); |
| 1659 | |
| 1660 | $mergeLeftovers = ''; |
| 1661 | do { |
| 1662 | $data = fread( $handle, 8192 ); |
| 1663 | if ( $data === false || $data === '' ) { |
| 1664 | break; |
| 1665 | } |
| 1666 | $mergeLeftovers .= $data; |
| 1667 | } while ( true ); |
| 1668 | pclose( $handle ); |
| 1669 | |
| 1670 | $conflict = $mergeLeftovers !== ''; |
| 1671 | |
| 1672 | # Merge differences automatically where possible, preferring "my" text for conflicts. |
| 1673 | $cmd = Shell::escape( $wgDiff3, '--text', '--ed', '--merge', $mytextName, |
| 1674 | $oldtextName, $yourtextName ); |
| 1675 | $handle = popen( $cmd, 'r' ); |
| 1676 | $simplisticMergeAttempt = ''; |
| 1677 | do { |
| 1678 | $data = fread( $handle, 8192 ); |
| 1679 | if ( $data === false || $data === '' ) { |
| 1680 | break; |
| 1681 | } |
| 1682 | $simplisticMergeAttempt .= $data; |
| 1683 | } while ( true ); |
| 1684 | pclose( $handle ); |
| 1685 | unlink( $mytextName ); |
| 1686 | unlink( $oldtextName ); |
| 1687 | unlink( $yourtextName ); |
| 1688 | |
| 1689 | if ( $simplisticMergeAttempt === '' && $old !== '' && !$conflict ) { |
| 1690 | wfDebug( "Unexpected null result from diff3. Command: $cmd" ); |
| 1691 | $conflict = true; |
| 1692 | } |
| 1693 | return !$conflict; |
| 1694 | } |
| 1695 | |
| 1696 | /** |
| 1697 | * Return the final portion of a pathname. |
| 1698 | * Reimplemented because PHP5's "basename()" is buggy with multibyte text. |
| 1699 | * https://bugs.php.net/bug.php?id=33898 |
| 1700 | * |
| 1701 | * PHP's basename() only considers '\' a pathchar on Windows and Netware. |
| 1702 | * We'll consider it so always, as we don't want '\s' in our Unix paths either. |
| 1703 | * |
| 1704 | * @param string $path |
| 1705 | * @param string $suffix String to remove if present |
| 1706 | * @return string |
| 1707 | */ |
| 1708 | function wfBaseName( $path, $suffix = '' ) { |
| 1709 | if ( $suffix == '' ) { |
| 1710 | $encSuffix = ''; |
| 1711 | } else { |
| 1712 | $encSuffix = '(?:' . preg_quote( $suffix, '#' ) . ')?'; |
| 1713 | } |
| 1714 | |
| 1715 | $matches = []; |
| 1716 | if ( preg_match( "#([^/\\\\]*?){$encSuffix}[/\\\\]*$#", $path, $matches ) ) { |
| 1717 | return $matches[1]; |
| 1718 | } else { |
| 1719 | return ''; |
| 1720 | } |
| 1721 | } |
| 1722 | |
| 1723 | /** |
| 1724 | * Generate a relative path name to the given file. |
| 1725 | * May explode on non-matching case-insensitive paths, |
| 1726 | * funky symlinks, etc. |
| 1727 | * |
| 1728 | * @param string $path Absolute destination path including target filename |
| 1729 | * @param string $from Absolute source path, directory only |
| 1730 | * @return string |
| 1731 | */ |
| 1732 | function wfRelativePath( $path, $from ) { |
| 1733 | // Normalize mixed input on Windows... |
| 1734 | $path = str_replace( '/', DIRECTORY_SEPARATOR, $path ); |
| 1735 | $from = str_replace( '/', DIRECTORY_SEPARATOR, $from ); |
| 1736 | |
| 1737 | // Trim trailing slashes -- fix for drive root |
| 1738 | $path = rtrim( $path, DIRECTORY_SEPARATOR ); |
| 1739 | $from = rtrim( $from, DIRECTORY_SEPARATOR ); |
| 1740 | |
| 1741 | $pieces = explode( DIRECTORY_SEPARATOR, dirname( $path ) ); |
| 1742 | $against = explode( DIRECTORY_SEPARATOR, $from ); |
| 1743 | |
| 1744 | if ( $pieces[0] !== $against[0] ) { |
| 1745 | // Non-matching Windows drive letters? |
| 1746 | // Return a full path. |
| 1747 | return $path; |
| 1748 | } |
| 1749 | |
| 1750 | // Trim off common prefix |
| 1751 | while ( count( $pieces ) && count( $against ) |
| 1752 | && $pieces[0] == $against[0] ) { |
| 1753 | array_shift( $pieces ); |
| 1754 | array_shift( $against ); |
| 1755 | } |
| 1756 | |
| 1757 | // relative dots to bump us to the parent |
| 1758 | while ( count( $against ) ) { |
| 1759 | array_unshift( $pieces, '..' ); |
| 1760 | array_shift( $against ); |
| 1761 | } |
| 1762 | |
| 1763 | $pieces[] = wfBaseName( $path ); |
| 1764 | |
| 1765 | return implode( DIRECTORY_SEPARATOR, $pieces ); |
| 1766 | } |
| 1767 | |
| 1768 | /** |
| 1769 | * Get the URL path to a MediaWiki entry point. |
| 1770 | * |
| 1771 | * This is a wrapper to respect $wgScript and $wgLoadScript overrides. |
| 1772 | * |
| 1773 | * @see MW_ENTRY_POINT |
| 1774 | * @param string $script Name of entrypoint, without `.php` extension. |
| 1775 | * @return string |
| 1776 | */ |
| 1777 | function wfScript( $script = 'index' ) { |
| 1778 | global $wgScriptPath, $wgScript, $wgLoadScript; |
| 1779 | if ( $script === 'index' ) { |
| 1780 | return $wgScript; |
| 1781 | } elseif ( $script === 'load' ) { |
| 1782 | return $wgLoadScript; |
| 1783 | } else { |
| 1784 | return "{$wgScriptPath}/{$script}.php"; |
| 1785 | } |
| 1786 | } |
| 1787 | |
| 1788 | /** |
| 1789 | * Convenience function converts boolean values into "true" |
| 1790 | * or "false" (string) values |
| 1791 | * |
| 1792 | * @param bool $value |
| 1793 | * @return string |
| 1794 | */ |
| 1795 | function wfBoolToStr( $value ) { |
| 1796 | return $value ? 'true' : 'false'; |
| 1797 | } |
| 1798 | |
| 1799 | /** |
| 1800 | * Get a platform-independent path to the null file, e.g. /dev/null |
| 1801 | * |
| 1802 | * @return string |
| 1803 | */ |
| 1804 | function wfGetNull() { |
| 1805 | return wfIsWindows() ? 'NUL' : '/dev/null'; |
| 1806 | } |
| 1807 | |
| 1808 | /** |
| 1809 | * Replace all invalid characters with '-'. |
| 1810 | * Additional characters can be defined in $wgIllegalFileChars (see T22489). |
| 1811 | * By default, $wgIllegalFileChars includes ':', '/', '\'. |
| 1812 | * |
| 1813 | * @param string $name Filename to process |
| 1814 | * @return string |
| 1815 | */ |
| 1816 | function wfStripIllegalFilenameChars( $name ) { |
| 1817 | global $wgIllegalFileChars; |
| 1818 | $illegalFileChars = $wgIllegalFileChars ? "|[" . $wgIllegalFileChars . "]" : ''; |
| 1819 | $name = preg_replace( |
| 1820 | "/[^" . Title::legalChars() . "]" . $illegalFileChars . "/", |
| 1821 | '-', |
| 1822 | $name |
| 1823 | ); |
| 1824 | // $wgIllegalFileChars may not include '/' and '\', so we still need to do this |
| 1825 | $name = wfBaseName( $name ); |
| 1826 | return $name; |
| 1827 | } |
| 1828 | |
| 1829 | /** |
| 1830 | * Raise PHP's memory limit (if needed). |
| 1831 | * |
| 1832 | * @internal For use by Setup.php |
| 1833 | * @param int $newLimit |
| 1834 | */ |
| 1835 | function wfMemoryLimit( $newLimit ) { |
| 1836 | $oldLimit = wfShorthandToInteger( ini_get( 'memory_limit' ) ); |
| 1837 | // If the INI config is already unlimited, there is nothing larger |
| 1838 | if ( $oldLimit != -1 ) { |
| 1839 | $newLimit = wfShorthandToInteger( (string)$newLimit ); |
| 1840 | if ( $newLimit == -1 ) { |
| 1841 | wfDebug( "Removing PHP's memory limit" ); |
| 1842 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 1843 | @ini_set( 'memory_limit', $newLimit ); |
| 1844 | } elseif ( $newLimit > $oldLimit ) { |
| 1845 | wfDebug( "Raising PHP's memory limit to $newLimit bytes" ); |
| 1846 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 1847 | @ini_set( 'memory_limit', $newLimit ); |
| 1848 | } |
| 1849 | } |
| 1850 | } |
| 1851 | |
| 1852 | /** |
| 1853 | * Raise the request time limit to $wgTransactionalTimeLimit |
| 1854 | * |
| 1855 | * @return int Prior time limit |
| 1856 | * @since 1.26 |
| 1857 | */ |
| 1858 | function wfTransactionalTimeLimit() { |
| 1859 | global $wgTransactionalTimeLimit; |
| 1860 | |
| 1861 | $timeout = RequestTimeout::singleton(); |
| 1862 | $timeLimit = $timeout->getWallTimeLimit(); |
| 1863 | if ( $timeLimit !== INF ) { |
| 1864 | // RequestTimeout library is active |
| 1865 | if ( $wgTransactionalTimeLimit > $timeLimit ) { |
| 1866 | $timeout->setWallTimeLimit( $wgTransactionalTimeLimit ); |
| 1867 | } |
| 1868 | } else { |
| 1869 | // Fallback case, likely $wgRequestTimeLimit === null |
| 1870 | $timeLimit = (int)ini_get( 'max_execution_time' ); |
| 1871 | // Note that CLI scripts use 0 |
| 1872 | if ( $timeLimit > 0 && $wgTransactionalTimeLimit > $timeLimit ) { |
| 1873 | $timeout->setWallTimeLimit( $wgTransactionalTimeLimit ); |
| 1874 | } |
| 1875 | } |
| 1876 | ignore_user_abort( true ); // ignore client disconnects |
| 1877 | |
| 1878 | return $timeLimit; |
| 1879 | } |
| 1880 | |
| 1881 | /** |
| 1882 | * Converts shorthand byte notation to integer form |
| 1883 | * |
| 1884 | * @param null|string $string |
| 1885 | * @param int $default Returned if $string is empty |
| 1886 | * @return int |
| 1887 | */ |
| 1888 | function wfShorthandToInteger( ?string $string = '', int $default = -1 ): int { |
| 1889 | $string = trim( $string ?? '' ); |
| 1890 | if ( $string === '' ) { |
| 1891 | return $default; |
| 1892 | } |
| 1893 | $last = substr( $string, -1 ); |
| 1894 | $val = intval( $string ); |
| 1895 | switch ( $last ) { |
| 1896 | case 'g': |
| 1897 | case 'G': |
| 1898 | $val *= 1024; |
| 1899 | // break intentionally missing |
| 1900 | case 'm': |
| 1901 | case 'M': |
| 1902 | $val *= 1024; |
| 1903 | // break intentionally missing |
| 1904 | case 'k': |
| 1905 | case 'K': |
| 1906 | $val *= 1024; |
| 1907 | } |
| 1908 | |
| 1909 | return $val; |
| 1910 | } |
| 1911 | |
| 1912 | /** |
| 1913 | * Determine input string is represents as infinity |
| 1914 | * |
| 1915 | * @param string $str The string to determine |
| 1916 | * @return bool |
| 1917 | * @since 1.25 |
| 1918 | */ |
| 1919 | function wfIsInfinity( $str ) { |
| 1920 | // The INFINITY_VALS are hardcoded elsewhere in MediaWiki (e.g. mediawiki.special.block.js). |
| 1921 | return in_array( $str, ExpiryDef::INFINITY_VALS ); |
| 1922 | } |
| 1923 | |
| 1924 | /** |
| 1925 | * Returns true if these thumbnail parameters match one that MediaWiki |
| 1926 | * requests from file description pages and/or parser output. |
| 1927 | * |
| 1928 | * $params is considered non-standard if they involve a non-standard |
| 1929 | * width or any non-default parameters aside from width and page number. |
| 1930 | * The number of possible files with standard parameters is far less than |
| 1931 | * that of all combinations; rate-limiting for them can thus be more generous. |
| 1932 | * |
| 1933 | * @param File $file |
| 1934 | * @param array $params |
| 1935 | * @return bool |
| 1936 | * @since 1.24 Moved from thumb.php to GlobalFunctions in 1.25 |
| 1937 | */ |
| 1938 | function wfThumbIsStandard( File $file, array $params ) { |
| 1939 | global $wgThumbLimits, $wgImageLimits, $wgResponsiveImages; |
| 1940 | |
| 1941 | $multipliers = [ 1 ]; |
| 1942 | if ( $wgResponsiveImages ) { |
| 1943 | // These available sizes are hardcoded currently elsewhere in MediaWiki. |
| 1944 | // @see Linker::processResponsiveImages |
| 1945 | $multipliers[] = 1.5; |
| 1946 | $multipliers[] = 2; |
| 1947 | } |
| 1948 | |
| 1949 | $handler = $file->getHandler(); |
| 1950 | if ( !$handler || !isset( $params['width'] ) ) { |
| 1951 | return false; |
| 1952 | } |
| 1953 | |
| 1954 | $basicParams = []; |
| 1955 | if ( isset( $params['page'] ) ) { |
| 1956 | $basicParams['page'] = $params['page']; |
| 1957 | } |
| 1958 | |
| 1959 | $thumbLimits = []; |
| 1960 | $imageLimits = []; |
| 1961 | // Expand limits to account for multipliers |
| 1962 | foreach ( $multipliers as $multiplier ) { |
| 1963 | $thumbLimits = array_merge( $thumbLimits, array_map( |
| 1964 | static function ( $width ) use ( $multiplier ) { |
| 1965 | return round( $width * $multiplier ); |
| 1966 | }, $wgThumbLimits ) |
| 1967 | ); |
| 1968 | $imageLimits = array_merge( $imageLimits, array_map( |
| 1969 | static function ( $pair ) use ( $multiplier ) { |
| 1970 | return [ |
| 1971 | round( $pair[0] * $multiplier ), |
| 1972 | round( $pair[1] * $multiplier ), |
| 1973 | ]; |
| 1974 | }, $wgImageLimits ) |
| 1975 | ); |
| 1976 | } |
| 1977 | |
| 1978 | // Check if the width matches one of $wgThumbLimits |
| 1979 | if ( in_array( $params['width'], $thumbLimits ) ) { |
| 1980 | $normalParams = $basicParams + [ 'width' => $params['width'] ]; |
| 1981 | // Append any default values to the map (e.g. "lossy", "lossless", ...) |
| 1982 | $handler->normaliseParams( $file, $normalParams ); |
| 1983 | } else { |
| 1984 | // If not, then check if the width matches one of $wgImageLimits |
| 1985 | $match = false; |
| 1986 | foreach ( $imageLimits as $pair ) { |
| 1987 | $normalParams = $basicParams + [ 'width' => $pair[0], 'height' => $pair[1] ]; |
| 1988 | // Decide whether the thumbnail should be scaled on width or height. |
| 1989 | // Also append any default values to the map (e.g. "lossy", "lossless", ...) |
| 1990 | $handler->normaliseParams( $file, $normalParams ); |
| 1991 | // Check if this standard thumbnail size maps to the given width |
| 1992 | if ( $normalParams['width'] == $params['width'] ) { |
| 1993 | $match = true; |
| 1994 | break; |
| 1995 | } |
| 1996 | } |
| 1997 | if ( !$match ) { |
| 1998 | return false; // not standard for description pages |
| 1999 | } |
| 2000 | } |
| 2001 | |
| 2002 | // Check that the given values for non-page, non-width, params are just defaults |
| 2003 | foreach ( $params as $key => $value ) { |
| 2004 | if ( !isset( $normalParams[$key] ) || $normalParams[$key] != $value ) { |
| 2005 | return false; |
| 2006 | } |
| 2007 | } |
| 2008 | |
| 2009 | return true; |
| 2010 | } |
| 2011 | |
| 2012 | /** |
| 2013 | * Merges two (possibly) 2 dimensional arrays into the target array ($baseArray). |
| 2014 | * |
| 2015 | * Values that exist in both values will be combined with += (all values of the array |
| 2016 | * of $newValues will be added to the values of the array of $baseArray, while values, |
| 2017 | * that exists in both, the value of $baseArray will be used). |
| 2018 | * |
| 2019 | * @param array $baseArray The array where you want to add the values of $newValues to |
| 2020 | * @param array $newValues An array with new values |
| 2021 | * @return array The combined array |
| 2022 | * @since 1.26 |
| 2023 | */ |
| 2024 | function wfArrayPlus2d( array $baseArray, array $newValues ) { |
| 2025 | // First merge items that are in both arrays |
| 2026 | foreach ( $baseArray as $name => &$groupVal ) { |
| 2027 | if ( isset( $newValues[$name] ) ) { |
| 2028 | $groupVal += $newValues[$name]; |
| 2029 | } |
| 2030 | } |
| 2031 | // Now add items that didn't exist yet |
| 2032 | $baseArray += $newValues; |
| 2033 | |
| 2034 | return $baseArray; |
| 2035 | } |