<?php
-
/**
- * Global functions used everywhere
- * @package MediaWiki
+ * Global functions used everywhere.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
*/
+if ( !defined( 'MEDIAWIKI' ) ) {
+ die( "This file is part of MediaWiki, it is not a valid entry point" );
+}
+
+use Liuggio\StatsdClient\Sender\SocketSender;
+use MediaWiki\Logger\LoggerFactory;
+use MediaWiki\ProcOpenError;
+use MediaWiki\Session\SessionManager;
+use MediaWiki\MediaWikiServices;
+use MediaWiki\Shell\Shell;
+use Wikimedia\ScopedCallback;
+use Wikimedia\Rdbms\DBReplicationWaitError;
+
+// Hide compatibility functions from Doxygen
+/// @cond
/**
- * Some globals and requires needed
- */
-
-/**
- * Total number of articles
- * @global integer $wgNumberOfArticles
+ * Compatibility functions
+ *
+ * We support PHP 5.5.9 and up.
+ * Re-implementations of newer functions or functions in non-standard
+ * PHP extensions may be included here.
*/
-$wgNumberOfArticles = -1; # Unset
+
+// hash_equals function only exists in PHP >= 5.6.0
+// https://secure.php.net/hash_equals
+if ( !function_exists( 'hash_equals' ) ) {
+ /**
+ * Check whether a user-provided string is equal to a fixed-length secret string
+ * without revealing bytes of the secret string through timing differences.
+ *
+ * The usual way to compare strings (PHP's === operator or the underlying memcmp()
+ * function in C) is to compare corresponding bytes and stop at the first difference,
+ * which would take longer for a partial match than for a complete mismatch. This
+ * is not secure when one of the strings (e.g. an HMAC or token) must remain secret
+ * and the other may come from an attacker. Statistical analysis of timing measurements
+ * over many requests may allow the attacker to guess the string's bytes one at a time
+ * (and check his guesses) even if the timing differences are extremely small.
+ *
+ * When making such a security-sensitive comparison, it is essential that the sequence
+ * in which instructions are executed and memory locations are accessed not depend on
+ * the secret string's value. HOWEVER, for simplicity, we do not attempt to minimize
+ * the inevitable leakage of the string's length. That is generally known anyway as
+ * a chararacteristic of the hash function used to compute the secret value.
+ *
+ * Longer explanation: http://www.emerose.com/timing-attacks-explained
+ *
+ * @codeCoverageIgnore
+ * @param string $known_string Fixed-length secret string to compare against
+ * @param string $user_string User-provided string
+ * @return bool True if the strings are the same, false otherwise
+ */
+ function hash_equals( $known_string, $user_string ) {
+ // Strict type checking as in PHP's native implementation
+ if ( !is_string( $known_string ) ) {
+ trigger_error( 'hash_equals(): Expected known_string to be a string, ' .
+ gettype( $known_string ) . ' given', E_USER_WARNING );
+
+ return false;
+ }
+
+ if ( !is_string( $user_string ) ) {
+ trigger_error( 'hash_equals(): Expected user_string to be a string, ' .
+ gettype( $user_string ) . ' given', E_USER_WARNING );
+
+ return false;
+ }
+
+ $known_string_len = strlen( $known_string );
+ if ( $known_string_len !== strlen( $user_string ) ) {
+ return false;
+ }
+
+ $result = 0;
+ for ( $i = 0; $i < $known_string_len; $i++ ) {
+ $result |= ord( $known_string[$i] ) ^ ord( $user_string[$i] );
+ }
+
+ return ( $result === 0 );
+ }
+}
+/// @endcond
+
/**
- * Total number of views
- * @global integer $wgTotalViews
- */
-$wgTotalViews = -1;
+ * Load an extension
+ *
+ * This queues an extension to be loaded through
+ * the ExtensionRegistry system.
+ *
+ * @param string $ext Name of the extension to load
+ * @param string|null $path Absolute path of where to find the extension.json file
+ * @since 1.25
+ */
+function wfLoadExtension( $ext, $path = null ) {
+ if ( !$path ) {
+ global $wgExtensionDirectory;
+ $path = "$wgExtensionDirectory/$ext/extension.json";
+ }
+ ExtensionRegistry::getInstance()->queue( $path );
+}
+
/**
- * Total number of edits
- * @global integer $wgTotalEdits
- */
-$wgTotalEdits = -1;
+ * Load multiple extensions at once
+ *
+ * Same as wfLoadExtension, but more efficient if you
+ * are loading multiple extensions.
+ *
+ * If you want to specify custom paths, you should interact with
+ * ExtensionRegistry directly.
+ *
+ * @see wfLoadExtension
+ * @param string[] $exts Array of extension names to load
+ * @since 1.25
+ */
+function wfLoadExtensions( array $exts ) {
+ global $wgExtensionDirectory;
+ $registry = ExtensionRegistry::getInstance();
+ foreach ( $exts as $ext ) {
+ $registry->queue( "$wgExtensionDirectory/$ext/extension.json" );
+ }
+}
+/**
+ * Load a skin
+ *
+ * @see wfLoadExtension
+ * @param string $skin Name of the extension to load
+ * @param string|null $path Absolute path of where to find the skin.json file
+ * @since 1.25
+ */
+function wfLoadSkin( $skin, $path = null ) {
+ if ( !$path ) {
+ global $wgStyleDirectory;
+ $path = "$wgStyleDirectory/$skin/skin.json";
+ }
+ ExtensionRegistry::getInstance()->queue( $path );
+}
-require_once( 'DatabaseFunctions.php' );
-require_once( 'UpdateClasses.php' );
-require_once( 'LogPage.php' );
-require_once( 'normal/UtfNormalUtil.php' );
+/**
+ * Load multiple skins at once
+ *
+ * @see wfLoadExtensions
+ * @param string[] $skins Array of extension names to load
+ * @since 1.25
+ */
+function wfLoadSkins( array $skins ) {
+ global $wgStyleDirectory;
+ $registry = ExtensionRegistry::getInstance();
+ foreach ( $skins as $skin ) {
+ $registry->queue( "$wgStyleDirectory/$skin/skin.json" );
+ }
+}
/**
- * Compatibility functions
- * PHP <4.3.x is not actively supported; 4.1.x and 4.2.x might or might not work.
- * <4.1.x will not work, as we use a number of features introduced in 4.1.0
- * such as the new autoglobals.
+ * Like array_diff( $a, $b ) except that it works with two-dimensional arrays.
+ * @param array $a
+ * @param array $b
+ * @return array
*/
-if( !function_exists('iconv') ) {
- # iconv support is not in the default configuration and so may not be present.
- # Assume will only ever use utf-8 and iso-8859-1.
- # This will *not* work in all circumstances.
- function iconv( $from, $to, $string ) {
- if(strcasecmp( $from, $to ) == 0) return $string;
- if(strcasecmp( $from, 'utf-8' ) == 0) return utf8_decode( $string );
- if(strcasecmp( $to, 'utf-8' ) == 0) return utf8_encode( $string );
- return $string;
- }
+function wfArrayDiff2( $a, $b ) {
+ return array_udiff( $a, $b, 'wfArrayDiff2_cmp' );
}
-if( !function_exists('file_get_contents') ) {
- # Exists in PHP 4.3.0+
- function file_get_contents( $filename ) {
- return implode( '', file( $filename ) );
+/**
+ * @param array|string $a
+ * @param array|string $b
+ * @return int
+ */
+function wfArrayDiff2_cmp( $a, $b ) {
+ if ( is_string( $a ) && is_string( $b ) ) {
+ return strcmp( $a, $b );
+ } elseif ( count( $a ) !== count( $b ) ) {
+ return count( $a ) < count( $b ) ? -1 : 1;
+ } else {
+ reset( $a );
+ reset( $b );
+ while ( ( list( , $valueA ) = each( $a ) ) && ( list( , $valueB ) = each( $b ) ) ) {
+ $cmp = strcmp( $valueA, $valueB );
+ if ( $cmp !== 0 ) {
+ return $cmp;
+ }
+ }
+ return 0;
}
}
-if( !function_exists('is_a') ) {
- # Exists in PHP 4.2.0+
- function is_a( $object, $class_name ) {
- return
- (strcasecmp( get_class( $object ), $class_name ) == 0) ||
- is_subclass_of( $object, $class_name );
+/**
+ * Like array_filter with ARRAY_FILTER_USE_BOTH, but works pre-5.6.
+ *
+ * @param array $arr
+ * @param callable $callback Will be called with the array value and key (in that order) and
+ * should return a bool which will determine whether the array element is kept.
+ * @return array
+ */
+function wfArrayFilter( array $arr, callable $callback ) {
+ if ( defined( 'ARRAY_FILTER_USE_BOTH' ) ) {
+ return array_filter( $arr, $callback, ARRAY_FILTER_USE_BOTH );
}
+ $filteredKeys = array_filter( array_keys( $arr ), function ( $key ) use ( $arr, $callback ) {
+ return call_user_func( $callback, $arr[$key], $key );
+ } );
+ return array_intersect_key( $arr, array_fill_keys( $filteredKeys, true ) );
}
-# UTF-8 substr function based on a PHP manual comment
-if ( !function_exists( 'mb_substr' ) ) {
- function mb_substr( $str, $start ) {
- preg_match_all( '/./us', $str, $ar );
+/**
+ * Like array_filter with ARRAY_FILTER_USE_KEY, but works pre-5.6.
+ *
+ * @param array $arr
+ * @param callable $callback Will be called with the array key and should return a bool which
+ * will determine whether the array element is kept.
+ * @return array
+ */
+function wfArrayFilterByKey( array $arr, callable $callback ) {
+ return wfArrayFilter( $arr, function ( $val, $key ) use ( $callback ) {
+ return call_user_func( $callback, $key );
+ } );
+}
- if( func_num_args() >= 3 ) {
- $end = func_get_arg( 2 );
- return join( '', array_slice( $ar[0], $start, $end ) );
- } else {
- return join( '', array_slice( $ar[0], $start ) );
- }
+/**
+ * Appends to second array if $value differs from that in $default
+ *
+ * @param string|int $key
+ * @param mixed $value
+ * @param mixed $default
+ * @param array &$changed Array to alter
+ * @throws MWException
+ */
+function wfAppendToArrayIfNotDefault( $key, $value, $default, &$changed ) {
+ if ( is_null( $changed ) ) {
+ throw new MWException( 'GlobalFunctions::wfAppendToArrayIfNotDefault got null' );
+ }
+ if ( $default[$key] !== $value ) {
+ $changed[$key] = $value;
}
}
-if( !function_exists( 'floatval' ) ) {
- /**
- * First defined in PHP 4.2.0
- * @param mixed $var;
- * @return float
- */
- function floatval( $var ) {
- return (float)$var;
+/**
+ * Merge arrays in the style of getUserPermissionsErrors, with duplicate removal
+ * e.g.
+ * wfMergeErrorArrays(
+ * [ [ 'x' ] ],
+ * [ [ 'x', '2' ] ],
+ * [ [ 'x' ] ],
+ * [ [ 'y' ] ]
+ * );
+ * returns:
+ * [
+ * [ 'x', '2' ],
+ * [ 'x' ],
+ * [ 'y' ]
+ * ]
+ *
+ * @param array $array1,...
+ * @return array
+ */
+function wfMergeErrorArrays( /*...*/ ) {
+ $args = func_get_args();
+ $out = [];
+ foreach ( $args as $errors ) {
+ foreach ( $errors as $params ) {
+ $originalParams = $params;
+ if ( $params[0] instanceof MessageSpecifier ) {
+ $msg = $params[0];
+ $params = array_merge( [ $msg->getKey() ], $msg->getParams() );
+ }
+ # @todo FIXME: Sometimes get nested arrays for $params,
+ # which leads to E_NOTICEs
+ $spec = implode( "\t", $params );
+ $out[$spec] = $originalParams;
+ }
}
+ return array_values( $out );
}
/**
- * Where as we got a random seed
- * @var bool $wgTotalViews
+ * Insert array into another array after the specified *KEY*
+ *
+ * @param array $array The array.
+ * @param array $insert The array to insert.
+ * @param mixed $after The key to insert after
+ * @return array
*/
-$wgRandomSeeded = false;
+function wfArrayInsertAfter( array $array, array $insert, $after ) {
+ // Find the offset of the element to insert after.
+ $keys = array_keys( $array );
+ $offsetByKey = array_flip( $keys );
+
+ $offset = $offsetByKey[$after];
+
+ // Insert at the specified offset
+ $before = array_slice( $array, 0, $offset + 1, true );
+ $after = array_slice( $array, $offset + 1, count( $array ) - $offset, true );
+
+ $output = $before + $insert + $after;
+
+ return $output;
+}
/**
- * Seed Mersenne Twister
- * Only necessary in PHP < 4.2.0
+ * Recursively converts the parameter (an object) to an array with the same data
*
- * @return bool
+ * @param object|array $objOrArray
+ * @param bool $recursive
+ * @return array
*/
-function wfSeedRandom() {
- global $wgRandomSeeded;
+function wfObjectToArray( $objOrArray, $recursive = true ) {
+ $array = [];
+ if ( is_object( $objOrArray ) ) {
+ $objOrArray = get_object_vars( $objOrArray );
+ }
+ foreach ( $objOrArray as $key => $value ) {
+ if ( $recursive && ( is_object( $value ) || is_array( $value ) ) ) {
+ $value = wfObjectToArray( $value );
+ }
- if ( ! $wgRandomSeeded && version_compare( phpversion(), '4.2.0' ) < 0 ) {
- $seed = hexdec(substr(md5(microtime()),-8)) & 0x7fffffff;
- mt_srand( $seed );
- $wgRandomSeeded = true;
+ $array[$key] = $value;
}
+
+ return $array;
}
/**
* not likely to give duplicate values for any realistic
* number of articles.
*
+ * @note This is designed for use in relation to Special:RandomPage
+ * and the page_random database field.
+ *
* @return string
*/
function wfRandom() {
- # The maximum random value is "only" 2^31-1, so get two random
- # values to reduce the chance of dupes
- $max = mt_getrandmax();
- $rand = number_format( (mt_rand() * $max + mt_rand())
- / $max / $max, 12, '.', '' );
+ // The maximum random value is "only" 2^31-1, so get two random
+ // values to reduce the chance of dupes
+ $max = mt_getrandmax() + 1;
+ $rand = number_format( ( mt_rand() * $max + mt_rand() ) / $max / $max, 12, '.', '' );
return $rand;
}
/**
- * We want / and : to be included as literal characters in our title URLs.
+ * Get a random string containing a number of pseudo-random hex characters.
+ *
+ * @note This is not secure, if you are trying to generate some sort
+ * of token please use MWCryptRand instead.
+ *
+ * @param int $length The length of the string to generate
+ * @return string
+ * @since 1.20
+ */
+function wfRandomString( $length = 32 ) {
+ $str = '';
+ for ( $n = 0; $n < $length; $n += 7 ) {
+ $str .= sprintf( '%07x', mt_rand() & 0xfffffff );
+ }
+ return substr( $str, 0, $length );
+}
+
+/**
+ * We want some things to be included as literal characters in our title URLs
+ * for prettiness, which urlencode encodes by default. According to RFC 1738,
+ * all of the following should be safe:
+ *
+ * ;:@&=$-_.+!*'(),
+ *
+ * RFC 1738 says ~ is unsafe, however RFC 3986 considers it an unreserved
+ * character which should not be encoded. More importantly, google chrome
+ * always converts %7E back to ~, and converting it in this function can
+ * cause a redirect loop (T105265).
+ *
+ * But + is not safe because it's used to indicate a space; &= are only safe in
+ * paths and not in queries (and we don't distinguish here); ' seems kind of
+ * scary; and urlencode() doesn't touch -_. to begin with. Plus, although /
+ * is reserved, we don't care. So the list we unescape is:
+ *
+ * ;:@$!*(),/~
+ *
+ * However, IIS7 redirects fail when the url contains a colon (see T24709),
+ * so no fancy : for IIS7.
+ *
* %2F in the page titles seems to fatally break for some reason.
*
* @param string $s
* @return string
-*/
-function wfUrlencode ( $s ) {
+ */
+function wfUrlencode( $s ) {
+ static $needle;
+
+ if ( is_null( $s ) ) {
+ $needle = null;
+ return '';
+ }
+
+ if ( is_null( $needle ) ) {
+ $needle = [ '%3B', '%40', '%24', '%21', '%2A', '%28', '%29', '%2C', '%2F', '%7E' ];
+ if ( !isset( $_SERVER['SERVER_SOFTWARE'] ) ||
+ ( strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7' ) === false )
+ ) {
+ $needle[] = '%3A';
+ }
+ }
+
$s = urlencode( $s );
- $s = preg_replace( '/%3[Aa]/', ':', $s );
- $s = preg_replace( '/%2[Ff]/', '/', $s );
+ $s = str_ireplace(
+ $needle,
+ [ ';', '@', '$', '!', '*', '(', ')', ',', '/', '~', ':' ],
+ $s
+ );
return $s;
}
/**
- * Sends a line to the debug log if enabled or, optionally, to a comment in output.
- * In normal operation this is a NOP.
- *
- * Controlling globals:
- * $wgDebugLogFile - points to the log file
- * $wgProfileOnly - if set, normal debug messages will not be recorded.
- * $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output.
- * $wgDebugComments - if on, some debug items may appear in comments in the HTML output.
+ * This function takes one or two arrays as input, and returns a CGI-style string, e.g.
+ * "days=7&limit=100". Options in the first array override options in the second.
+ * Options set to null or false will not be output.
*
- * @param string $text
- * @param bool $logonly Set true to avoid appearing in HTML when $wgDebugComments is set
+ * @param array $array1 ( String|Array )
+ * @param array|null $array2 ( String|Array )
+ * @param string $prefix
+ * @return string
*/
-function wfDebug( $text, $logonly = false ) {
- global $wgOut, $wgDebugLogFile, $wgDebugComments, $wgProfileOnly, $wgDebugRawPage;
-
- # Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet
- if ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' && !$wgDebugRawPage ) {
- return;
+function wfArrayToCgi( $array1, $array2 = null, $prefix = '' ) {
+ if ( !is_null( $array2 ) ) {
+ $array1 = $array1 + $array2;
}
- if ( isset( $wgOut ) && $wgDebugComments && !$logonly ) {
- $wgOut->debug( $text );
- }
- if ( '' != $wgDebugLogFile && !$wgProfileOnly ) {
- # Strip unprintables; they can switch terminal modes when binary data
- # gets dumped, which is pretty annoying.
- $text = preg_replace( '![\x00-\x08\x0b\x0c\x0e-\x1f]!', ' ', $text );
- @error_log( $text, 3, $wgDebugLogFile );
+ $cgi = '';
+ foreach ( $array1 as $key => $value ) {
+ if ( !is_null( $value ) && $value !== false ) {
+ if ( $cgi != '' ) {
+ $cgi .= '&';
+ }
+ if ( $prefix !== '' ) {
+ $key = $prefix . "[$key]";
+ }
+ if ( is_array( $value ) ) {
+ $firstTime = true;
+ foreach ( $value as $k => $v ) {
+ $cgi .= $firstTime ? '' : '&';
+ if ( is_array( $v ) ) {
+ $cgi .= wfArrayToCgi( $v, null, $key . "[$k]" );
+ } else {
+ $cgi .= urlencode( $key . "[$k]" ) . '=' . urlencode( $v );
+ }
+ $firstTime = false;
+ }
+ } else {
+ if ( is_object( $value ) ) {
+ $value = $value->__toString();
+ }
+ $cgi .= urlencode( $key ) . '=' . urlencode( $value );
+ }
+ }
}
+ return $cgi;
}
/**
- * Send a line to a supplementary debug log file, if configured, or main debug log if not.
- * $wgDebugLogGroups[$logGroup] should be set to a filename to send to a separate log.
- * @param string $logGroup
- * @param string $text
+ * This is the logical opposite of wfArrayToCgi(): it accepts a query string as
+ * its argument and returns the same string in array form. This allows compatibility
+ * with legacy functions that accept raw query strings instead of nice
+ * arrays. Of course, keys and values are urldecode()d.
+ *
+ * @param string $query Query string
+ * @return string[] Array version of input
*/
-function wfDebugLog( $logGroup, $text ) {
- global $wgDebugLogGroups, $wgDBname;
- if( $text{strlen( $text ) - 1} != "\n" ) $text .= "\n";
- if( isset( $wgDebugLogGroups[$logGroup] ) ) {
- @error_log( "$wgDBname: $text", 3, $wgDebugLogGroups[$logGroup] );
- } else {
- wfDebug( $text, true );
+function wfCgiToArray( $query ) {
+ if ( isset( $query[0] ) && $query[0] == '?' ) {
+ $query = substr( $query, 1 );
+ }
+ $bits = explode( '&', $query );
+ $ret = [];
+ foreach ( $bits as $bit ) {
+ if ( $bit === '' ) {
+ continue;
+ }
+ if ( strpos( $bit, '=' ) === false ) {
+ // Pieces like &qwerty become 'qwerty' => '' (at least this is what php does)
+ $key = $bit;
+ $value = '';
+ } else {
+ list( $key, $value ) = explode( '=', $bit );
+ }
+ $key = urldecode( $key );
+ $value = urldecode( $value );
+ if ( strpos( $key, '[' ) !== false ) {
+ $keys = array_reverse( explode( '[', $key ) );
+ $key = array_pop( $keys );
+ $temp = $value;
+ foreach ( $keys as $k ) {
+ $k = substr( $k, 0, -1 );
+ $temp = [ $k => $temp ];
+ }
+ if ( isset( $ret[$key] ) ) {
+ $ret[$key] = array_merge( $ret[$key], $temp );
+ } else {
+ $ret[$key] = $temp;
+ }
+ } else {
+ $ret[$key] = $value;
+ }
}
+ return $ret;
}
/**
- * Log for database errors
- * @param string $text Database error message.
+ * Append a query string to an existing URL, which may or may not already
+ * have query string parameters already. If so, they will be combined.
+ *
+ * @param string $url
+ * @param string|string[] $query String or associative array
+ * @return string
*/
-function wfLogDBError( $text ) {
- global $wgDBerrorLog;
- if ( $wgDBerrorLog ) {
- $text = date('D M j G:i:s T Y') . "\t".$text;
- error_log( $text, 3, $wgDBerrorLog );
+function wfAppendQuery( $url, $query ) {
+ if ( is_array( $query ) ) {
+ $query = wfArrayToCgi( $query );
+ }
+ if ( $query != '' ) {
+ // Remove the fragment, if there is one
+ $fragment = false;
+ $hashPos = strpos( $url, '#' );
+ if ( $hashPos !== false ) {
+ $fragment = substr( $url, $hashPos );
+ $url = substr( $url, 0, $hashPos );
+ }
+
+ // Add parameter
+ if ( false === strpos( $url, '?' ) ) {
+ $url .= '?';
+ } else {
+ $url .= '&';
+ }
+ $url .= $query;
+
+ // Put the fragment back
+ if ( $fragment !== false ) {
+ $url .= $fragment;
+ }
}
+ return $url;
}
/**
- * @todo document
- */
-function logProfilingData() {
- global $wgRequestTime, $wgDebugLogFile, $wgDebugRawPage, $wgRequest;
- global $wgProfiling, $wgProfileStack, $wgProfileLimit, $wgUser;
- $now = wfTime();
-
- list( $usec, $sec ) = explode( ' ', $wgRequestTime );
- $start = (float)$sec + (float)$usec;
- $elapsed = $now - $start;
- if ( $wgProfiling ) {
- $prof = wfGetProfilingOutput( $start, $elapsed );
- $forward = '';
- if( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
- $forward = ' forwarded for ' . $_SERVER['HTTP_X_FORWARDED_FOR'];
- if( !empty( $_SERVER['HTTP_CLIENT_IP'] ) )
- $forward .= ' client IP ' . $_SERVER['HTTP_CLIENT_IP'];
- if( !empty( $_SERVER['HTTP_FROM'] ) )
- $forward .= ' from ' . $_SERVER['HTTP_FROM'];
- if( $forward )
- $forward = "\t(proxied via {$_SERVER['REMOTE_ADDR']}{$forward})";
- if( $wgUser->isAnon() )
- $forward .= ' anon';
- $log = sprintf( "%s\t%04.3f\t%s\n",
- gmdate( 'YmdHis' ), $elapsed,
- urldecode( $_SERVER['REQUEST_URI'] . $forward ) );
- if ( '' != $wgDebugLogFile && ( $wgRequest->getVal('action') != 'raw' || $wgDebugRawPage ) ) {
- error_log( $log . $prof, 3, $wgDebugLogFile );
- }
- }
-}
-
-/**
- * Check if the wiki read-only lock file is present. This can be used to lock
- * off editing functions, but doesn't guarantee that the database will not be
- * modified.
- * @return bool
- */
-function wfReadOnly() {
- global $wgReadOnlyFile, $wgReadOnly;
+ * Expand a potentially local URL to a fully-qualified URL. Assumes $wgServer
+ * is correct.
+ *
+ * The meaning of the PROTO_* constants is as follows:
+ * PROTO_HTTP: Output a URL starting with http://
+ * PROTO_HTTPS: Output a URL starting with https://
+ * PROTO_RELATIVE: Output a URL starting with // (protocol-relative URL)
+ * PROTO_CURRENT: Output a URL starting with either http:// or https:// , depending
+ * on which protocol was used for the current incoming request
+ * PROTO_CANONICAL: For URLs without a domain, like /w/index.php , use $wgCanonicalServer.
+ * For protocol-relative URLs, use the protocol of $wgCanonicalServer
+ * PROTO_INTERNAL: Like PROTO_CANONICAL, but uses $wgInternalServer instead of $wgCanonicalServer
+ *
+ * @todo this won't work with current-path-relative URLs
+ * like "subdir/foo.html", etc.
+ *
+ * @param string $url Either fully-qualified or a local path + query
+ * @param string $defaultProto One of the PROTO_* constants. Determines the
+ * protocol to use if $url or $wgServer is protocol-relative
+ * @return string|false Fully-qualified URL, current-path-relative URL or false if
+ * no valid URL can be constructed
+ */
+function wfExpandUrl( $url, $defaultProto = PROTO_CURRENT ) {
+ global $wgServer, $wgCanonicalServer, $wgInternalServer, $wgRequest,
+ $wgHttpsPort;
+ if ( $defaultProto === PROTO_CANONICAL ) {
+ $serverUrl = $wgCanonicalServer;
+ } elseif ( $defaultProto === PROTO_INTERNAL && $wgInternalServer !== false ) {
+ // Make $wgInternalServer fall back to $wgServer if not set
+ $serverUrl = $wgInternalServer;
+ } else {
+ $serverUrl = $wgServer;
+ if ( $defaultProto === PROTO_CURRENT ) {
+ $defaultProto = $wgRequest->getProtocol() . '://';
+ }
+ }
- if ( !is_null( $wgReadOnly ) ) {
- return (bool)$wgReadOnly;
+ // Analyze $serverUrl to obtain its protocol
+ $bits = wfParseUrl( $serverUrl );
+ $serverHasProto = $bits && $bits['scheme'] != '';
+
+ if ( $defaultProto === PROTO_CANONICAL || $defaultProto === PROTO_INTERNAL ) {
+ if ( $serverHasProto ) {
+ $defaultProto = $bits['scheme'] . '://';
+ } else {
+ // $wgCanonicalServer or $wgInternalServer doesn't have a protocol.
+ // This really isn't supposed to happen. Fall back to HTTP in this
+ // ridiculous case.
+ $defaultProto = PROTO_HTTP;
+ }
}
- if ( '' == $wgReadOnlyFile ) {
- return false;
+
+ $defaultProtoWithoutSlashes = substr( $defaultProto, 0, -2 );
+
+ if ( substr( $url, 0, 2 ) == '//' ) {
+ $url = $defaultProtoWithoutSlashes . $url;
+ } elseif ( substr( $url, 0, 1 ) == '/' ) {
+ // If $serverUrl is protocol-relative, prepend $defaultProtoWithoutSlashes,
+ // otherwise leave it alone.
+ $url = ( $serverHasProto ? '' : $defaultProtoWithoutSlashes ) . $serverUrl . $url;
}
-
- // Set $wgReadOnly for faster access next time
- if ( is_file( $wgReadOnlyFile ) ) {
- $wgReadOnly = file_get_contents( $wgReadOnlyFile );
- } else {
- $wgReadOnly = false;
+
+ $bits = wfParseUrl( $url );
+
+ // ensure proper port for HTTPS arrives in URL
+ // https://phabricator.wikimedia.org/T67184
+ if ( $defaultProto === PROTO_HTTPS && $wgHttpsPort != 443 ) {
+ $bits['port'] = $wgHttpsPort;
}
- return $wgReadOnly;
-}
+ if ( $bits && isset( $bits['path'] ) ) {
+ $bits['path'] = wfRemoveDotSegments( $bits['path'] );
+ return wfAssembleUrl( $bits );
+ } elseif ( $bits ) {
+ # No path to expand
+ return $url;
+ } elseif ( substr( $url, 0, 1 ) != '/' ) {
+ # URL is a relative path
+ return wfRemoveDotSegments( $url );
+ }
-/**
- * Get a message from anywhere, for the current user language
- *
- * @param string
- */
-function wfMsg( $key ) {
- $args = func_get_args();
- array_shift( $args );
- return wfMsgReal( $key, $args, true );
+ # Expanded URL is not valid.
+ return false;
}
/**
- * Get a message from anywhere, for the current global language
+ * This function will reassemble a URL parsed with wfParseURL. This is useful
+ * if you need to edit part of a URL and put it back together.
+ *
+ * This is the basic structure used (brackets contain keys for $urlParts):
+ * [scheme][delimiter][user]:[pass]@[host]:[port][path]?[query]#[fragment]
+ *
+ * @todo Need to integrate this into wfExpandUrl (see T34168)
+ *
+ * @since 1.19
+ * @param array $urlParts URL parts, as output from wfParseUrl
+ * @return string URL assembled from its component parts
*/
-function wfMsgForContent( $key ) {
- global $wgForceUIMsgAsContentMsg;
- $args = func_get_args();
- array_shift( $args );
- $forcontent = true;
- if( is_array( $wgForceUIMsgAsContentMsg ) &&
- in_array( $key, $wgForceUIMsgAsContentMsg ) )
- $forcontent = false;
- return wfMsgReal( $key, $args, true, $forcontent );
+function wfAssembleUrl( $urlParts ) {
+ $result = '';
+
+ if ( isset( $urlParts['delimiter'] ) ) {
+ if ( isset( $urlParts['scheme'] ) ) {
+ $result .= $urlParts['scheme'];
+ }
+
+ $result .= $urlParts['delimiter'];
+ }
+
+ if ( isset( $urlParts['host'] ) ) {
+ if ( isset( $urlParts['user'] ) ) {
+ $result .= $urlParts['user'];
+ if ( isset( $urlParts['pass'] ) ) {
+ $result .= ':' . $urlParts['pass'];
+ }
+ $result .= '@';
+ }
+
+ $result .= $urlParts['host'];
+
+ if ( isset( $urlParts['port'] ) ) {
+ $result .= ':' . $urlParts['port'];
+ }
+ }
+
+ if ( isset( $urlParts['path'] ) ) {
+ $result .= $urlParts['path'];
+ }
+
+ if ( isset( $urlParts['query'] ) ) {
+ $result .= '?' . $urlParts['query'];
+ }
+
+ if ( isset( $urlParts['fragment'] ) ) {
+ $result .= '#' . $urlParts['fragment'];
+ }
+
+ return $result;
}
/**
- * Get a message from the language file, for the UI elements
- */
-function wfMsgNoDB( $key ) {
- $args = func_get_args();
- array_shift( $args );
- return wfMsgReal( $key, $args, false );
+ * Remove all dot-segments in the provided URL path. For example,
+ * '/a/./b/../c/' becomes '/a/c/'. For details on the algorithm, please see
+ * RFC3986 section 5.2.4.
+ *
+ * @todo Need to integrate this into wfExpandUrl (see T34168)
+ *
+ * @param string $urlPath URL path, potentially containing dot-segments
+ * @return string URL path with all dot-segments removed
+ */
+function wfRemoveDotSegments( $urlPath ) {
+ $output = '';
+ $inputOffset = 0;
+ $inputLength = strlen( $urlPath );
+
+ while ( $inputOffset < $inputLength ) {
+ $prefixLengthOne = substr( $urlPath, $inputOffset, 1 );
+ $prefixLengthTwo = substr( $urlPath, $inputOffset, 2 );
+ $prefixLengthThree = substr( $urlPath, $inputOffset, 3 );
+ $prefixLengthFour = substr( $urlPath, $inputOffset, 4 );
+ $trimOutput = false;
+
+ if ( $prefixLengthTwo == './' ) {
+ # Step A, remove leading "./"
+ $inputOffset += 2;
+ } elseif ( $prefixLengthThree == '../' ) {
+ # Step A, remove leading "../"
+ $inputOffset += 3;
+ } elseif ( ( $prefixLengthTwo == '/.' ) && ( $inputOffset + 2 == $inputLength ) ) {
+ # Step B, replace leading "/.$" with "/"
+ $inputOffset += 1;
+ $urlPath[$inputOffset] = '/';
+ } elseif ( $prefixLengthThree == '/./' ) {
+ # Step B, replace leading "/./" with "/"
+ $inputOffset += 2;
+ } elseif ( $prefixLengthThree == '/..' && ( $inputOffset + 3 == $inputLength ) ) {
+ # Step C, replace leading "/..$" with "/" and
+ # remove last path component in output
+ $inputOffset += 2;
+ $urlPath[$inputOffset] = '/';
+ $trimOutput = true;
+ } elseif ( $prefixLengthFour == '/../' ) {
+ # Step C, replace leading "/../" with "/" and
+ # remove last path component in output
+ $inputOffset += 3;
+ $trimOutput = true;
+ } elseif ( ( $prefixLengthOne == '.' ) && ( $inputOffset + 1 == $inputLength ) ) {
+ # Step D, remove "^.$"
+ $inputOffset += 1;
+ } elseif ( ( $prefixLengthTwo == '..' ) && ( $inputOffset + 2 == $inputLength ) ) {
+ # Step D, remove "^..$"
+ $inputOffset += 2;
+ } else {
+ # Step E, move leading path segment to output
+ if ( $prefixLengthOne == '/' ) {
+ $slashPos = strpos( $urlPath, '/', $inputOffset + 1 );
+ } else {
+ $slashPos = strpos( $urlPath, '/', $inputOffset );
+ }
+ if ( $slashPos === false ) {
+ $output .= substr( $urlPath, $inputOffset );
+ $inputOffset = $inputLength;
+ } else {
+ $output .= substr( $urlPath, $inputOffset, $slashPos - $inputOffset );
+ $inputOffset += $slashPos - $inputOffset;
+ }
+ }
+
+ if ( $trimOutput ) {
+ $slashPos = strrpos( $output, '/' );
+ if ( $slashPos === false ) {
+ $output = '';
+ } else {
+ $output = substr( $output, 0, $slashPos );
+ }
+ }
+ }
+
+ return $output;
}
/**
- * Get a message from the language file, for the content
+ * Returns a regular expression of url protocols
+ *
+ * @param bool $includeProtocolRelative If false, remove '//' from the returned protocol list.
+ * DO NOT USE this directly, use wfUrlProtocolsWithoutProtRel() instead
+ * @return string
*/
-function wfMsgNoDBForContent( $key ) {
- global $wgForceUIMsgAsContentMsg;
- $args = func_get_args();
- array_shift( $args );
- $forcontent = true;
- if( is_array( $wgForceUIMsgAsContentMsg ) &&
- in_array( $key, $wgForceUIMsgAsContentMsg ) )
- $forcontent = false;
- return wfMsgReal( $key, $args, false, $forcontent );
-}
+function wfUrlProtocols( $includeProtocolRelative = true ) {
+ global $wgUrlProtocols;
+ // Cache return values separately based on $includeProtocolRelative
+ static $withProtRel = null, $withoutProtRel = null;
+ $cachedValue = $includeProtocolRelative ? $withProtRel : $withoutProtRel;
+ if ( !is_null( $cachedValue ) ) {
+ return $cachedValue;
+ }
-/**
- * Really get a message
- */
-function wfMsgReal( $key, $args, $useDB, $forContent=false ) {
- $fname = 'wfMsgReal';
- wfProfileIn( $fname );
-
- $message = wfMsgGetKey( $key, $useDB, $forContent );
- $message = wfMsgReplaceArgs( $message, $args );
- wfProfileOut( $fname );
- return $message;
+ // Support old-style $wgUrlProtocols strings, for backwards compatibility
+ // with LocalSettings files from 1.5
+ if ( is_array( $wgUrlProtocols ) ) {
+ $protocols = [];
+ foreach ( $wgUrlProtocols as $protocol ) {
+ // Filter out '//' if !$includeProtocolRelative
+ if ( $includeProtocolRelative || $protocol !== '//' ) {
+ $protocols[] = preg_quote( $protocol, '/' );
+ }
+ }
+
+ $retval = implode( '|', $protocols );
+ } else {
+ // Ignore $includeProtocolRelative in this case
+ // This case exists for pre-1.6 compatibility, and we can safely assume
+ // that '//' won't appear in a pre-1.6 config because protocol-relative
+ // URLs weren't supported until 1.18
+ $retval = $wgUrlProtocols;
+ }
+
+ // Cache return value
+ if ( $includeProtocolRelative ) {
+ $withProtRel = $retval;
+ } else {
+ $withoutProtRel = $retval;
+ }
+ return $retval;
}
/**
- * Fetch a message string value, but don't replace any keys yet.
- * @param string $key
- * @param bool $useDB
- * @param bool $forContent
+ * Like wfUrlProtocols(), but excludes '//' from the protocol list. Use this if
+ * you need a regex that matches all URL protocols but does not match protocol-
+ * relative URLs
* @return string
- * @access private
*/
-function wfMsgGetKey( $key, $useDB, $forContent = false ) {
- global $wgParser, $wgMsgParserOptions;
- global $wgContLang, $wgLanguageCode;
- global $wgMessageCache, $wgLang;
-
- if( is_object( $wgMessageCache ) ) {
- $message = $wgMessageCache->get( $key, $useDB, $forContent );
- } else {
- if( $forContent ) {
- $lang = &$wgContLang;
- } else {
- $lang = &$wgLang;
- }
+function wfUrlProtocolsWithoutProtRel() {
+ return wfUrlProtocols( false );
+}
- wfSuppressWarnings();
-
- if( is_object( $lang ) ) {
- $message = $lang->getMessage( $key );
- } else {
- $message = '';
- }
- wfRestoreWarnings();
- if(!$message)
- $message = Language::getMessage($key);
- if(strstr($message, '{{' ) !== false) {
- $message = $wgParser->transformMsg($message, $wgMsgParserOptions);
+/**
+ * parse_url() work-alike, but non-broken. Differences:
+ *
+ * 1) Does not raise warnings on bad URLs (just returns false).
+ * 2) Handles protocols that don't use :// (e.g., mailto: and news:, as well as
+ * protocol-relative URLs) correctly.
+ * 3) Adds a "delimiter" element to the array (see (2)).
+ * 4) Verifies that the protocol is on the $wgUrlProtocols whitelist.
+ * 5) Rejects some invalid URLs that parse_url doesn't, e.g. the empty string or URLs starting with
+ * a line feed character.
+ *
+ * @param string $url A URL to parse
+ * @return string[]|bool Bits of the URL in an associative array, or false on failure.
+ * Possible fields:
+ * - scheme: URI scheme (protocol), e.g. 'http', 'mailto'. Lowercase, always present, but can
+ * be an empty string for protocol-relative URLs.
+ * - delimiter: either '://', ':' or '//'. Always present.
+ * - host: domain name / IP. Always present, but could be an empty string, e.g. for file: URLs.
+ * - user: user name, e.g. for HTTP Basic auth URLs such as http://user:pass@example.com/
+ * Missing when there is no username.
+ * - pass: password, same as above.
+ * - path: path including the leading /. Will be missing when empty (e.g. 'http://example.com')
+ * - query: query string (as a string; see wfCgiToArray() for parsing it), can be missing.
+ * - fragment: the part after #, can be missing.
+ */
+function wfParseUrl( $url ) {
+ global $wgUrlProtocols; // Allow all protocols defined in DefaultSettings/LocalSettings.php
+
+ // Protocol-relative URLs are handled really badly by parse_url(). It's so
+ // bad that the easiest way to handle them is to just prepend 'http:' and
+ // strip the protocol out later.
+ $wasRelative = substr( $url, 0, 2 ) == '//';
+ if ( $wasRelative ) {
+ $url = "http:$url";
+ }
+ MediaWiki\suppressWarnings();
+ $bits = parse_url( $url );
+ MediaWiki\restoreWarnings();
+ // parse_url() returns an array without scheme for some invalid URLs, e.g.
+ // parse_url("%0Ahttp://example.com") == [ 'host' => '%0Ahttp', 'path' => 'example.com' ]
+ if ( !$bits || !isset( $bits['scheme'] ) ) {
+ return false;
+ }
+
+ // parse_url() incorrectly handles schemes case-sensitively. Convert it to lowercase.
+ $bits['scheme'] = strtolower( $bits['scheme'] );
+
+ // most of the protocols are followed by ://, but mailto: and sometimes news: not, check for it
+ if ( in_array( $bits['scheme'] . '://', $wgUrlProtocols ) ) {
+ $bits['delimiter'] = '://';
+ } elseif ( in_array( $bits['scheme'] . ':', $wgUrlProtocols ) ) {
+ $bits['delimiter'] = ':';
+ // parse_url detects for news: and mailto: the host part of an url as path
+ // We have to correct this wrong detection
+ if ( isset( $bits['path'] ) ) {
+ $bits['host'] = $bits['path'];
+ $bits['path'] = '';
+ }
+ } else {
+ return false;
+ }
+
+ /* Provide an empty host for eg. file:/// urls (see T30627) */
+ if ( !isset( $bits['host'] ) ) {
+ $bits['host'] = '';
+
+ // See T47069
+ if ( isset( $bits['path'] ) ) {
+ /* parse_url loses the third / for file:///c:/ urls (but not on variants) */
+ if ( substr( $bits['path'], 0, 1 ) !== '/' ) {
+ $bits['path'] = '/' . $bits['path'];
+ }
+ } else {
+ $bits['path'] = '';
+ }
+ }
+
+ // If the URL was protocol-relative, fix scheme and delimiter
+ if ( $wasRelative ) {
+ $bits['scheme'] = '';
+ $bits['delimiter'] = '//';
+ }
+ return $bits;
+}
+
+/**
+ * Take a URL, make sure it's expanded to fully qualified, and replace any
+ * encoded non-ASCII Unicode characters with their UTF-8 original forms
+ * for more compact display and legibility for local audiences.
+ *
+ * @todo handle punycode domains too
+ *
+ * @param string $url
+ * @return string
+ */
+function wfExpandIRI( $url ) {
+ return preg_replace_callback(
+ '/((?:%[89A-F][0-9A-F])+)/i',
+ 'wfExpandIRI_callback',
+ wfExpandUrl( $url )
+ );
+}
+
+/**
+ * Private callback for wfExpandIRI
+ * @param array $matches
+ * @return string
+ */
+function wfExpandIRI_callback( $matches ) {
+ return urldecode( $matches[1] );
+}
+
+/**
+ * Make URL indexes, appropriate for the el_index field of externallinks.
+ *
+ * @param string $url
+ * @return array
+ */
+function wfMakeUrlIndexes( $url ) {
+ $bits = wfParseUrl( $url );
+
+ // Reverse the labels in the hostname, convert to lower case
+ // For emails reverse domainpart only
+ if ( $bits['scheme'] == 'mailto' ) {
+ $mailparts = explode( '@', $bits['host'], 2 );
+ if ( count( $mailparts ) === 2 ) {
+ $domainpart = strtolower( implode( '.', array_reverse( explode( '.', $mailparts[1] ) ) ) );
+ } else {
+ // No domain specified, don't mangle it
+ $domainpart = '';
+ }
+ $reversedHost = $domainpart . '@' . $mailparts[0];
+ } else {
+ $reversedHost = strtolower( implode( '.', array_reverse( explode( '.', $bits['host'] ) ) ) );
+ }
+ // Add an extra dot to the end
+ // Why? Is it in wrong place in mailto links?
+ if ( substr( $reversedHost, -1, 1 ) !== '.' ) {
+ $reversedHost .= '.';
+ }
+ // Reconstruct the pseudo-URL
+ $prot = $bits['scheme'];
+ $index = $prot . $bits['delimiter'] . $reversedHost;
+ // Leave out user and password. Add the port, path, query and fragment
+ if ( isset( $bits['port'] ) ) {
+ $index .= ':' . $bits['port'];
+ }
+ if ( isset( $bits['path'] ) ) {
+ $index .= $bits['path'];
+ } else {
+ $index .= '/';
+ }
+ if ( isset( $bits['query'] ) ) {
+ $index .= '?' . $bits['query'];
+ }
+ if ( isset( $bits['fragment'] ) ) {
+ $index .= '#' . $bits['fragment'];
+ }
+
+ if ( $prot == '' ) {
+ return [ "http:$index", "https:$index" ];
+ } else {
+ return [ $index ];
+ }
+}
+
+/**
+ * Check whether a given URL has a domain that occurs in a given set of domains
+ * @param string $url URL
+ * @param array $domains Array of domains (strings)
+ * @return bool True if the host part of $url ends in one of the strings in $domains
+ */
+function wfMatchesDomainList( $url, $domains ) {
+ $bits = wfParseUrl( $url );
+ if ( is_array( $bits ) && isset( $bits['host'] ) ) {
+ $host = '.' . $bits['host'];
+ foreach ( (array)$domains as $domain ) {
+ $domain = '.' . $domain;
+ if ( substr( $host, -strlen( $domain ) ) === $domain ) {
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/**
+ * Sends a line to the debug log if enabled or, optionally, to a comment in output.
+ * In normal operation this is a NOP.
+ *
+ * Controlling globals:
+ * $wgDebugLogFile - points to the log file
+ * $wgDebugRawPage - if false, 'action=raw' hits will not result in debug output.
+ * $wgDebugComments - if on, some debug items may appear in comments in the HTML output.
+ *
+ * @since 1.25 support for additional context data
+ *
+ * @param string $text
+ * @param string|bool $dest Destination of the message:
+ * - 'all': both to the log and HTML (debug toolbar or HTML comments)
+ * - 'private': excluded from HTML output
+ * For backward compatibility, it can also take a boolean:
+ * - true: same as 'all'
+ * - false: same as 'private'
+ * @param array $context Additional logging context data
+ */
+function wfDebug( $text, $dest = 'all', array $context = [] ) {
+ global $wgDebugRawPage, $wgDebugLogPrefix;
+ global $wgDebugTimestamps, $wgRequestTime;
+
+ if ( !$wgDebugRawPage && wfIsDebugRawPage() ) {
+ return;
+ }
+
+ $text = trim( $text );
+
+ if ( $wgDebugTimestamps ) {
+ $context['seconds_elapsed'] = sprintf(
+ '%6.4f',
+ microtime( true ) - $wgRequestTime
+ );
+ $context['memory_used'] = sprintf(
+ '%5.1fM',
+ ( memory_get_usage( true ) / ( 1024 * 1024 ) )
+ );
+ }
+
+ if ( $wgDebugLogPrefix !== '' ) {
+ $context['prefix'] = $wgDebugLogPrefix;
+ }
+ $context['private'] = ( $dest === false || $dest === 'private' );
+
+ $logger = LoggerFactory::getInstance( 'wfDebug' );
+ $logger->debug( $text, $context );
+}
+
+/**
+ * Returns true if debug logging should be suppressed if $wgDebugRawPage = false
+ * @return bool
+ */
+function wfIsDebugRawPage() {
+ static $cache;
+ if ( $cache !== null ) {
+ return $cache;
+ }
+ # Check for raw action using $_GET not $wgRequest, since the latter might not be initialised yet
+ if ( ( isset( $_GET['action'] ) && $_GET['action'] == 'raw' )
+ || (
+ isset( $_SERVER['SCRIPT_NAME'] )
+ && substr( $_SERVER['SCRIPT_NAME'], -8 ) == 'load.php'
+ )
+ ) {
+ $cache = true;
+ } else {
+ $cache = false;
+ }
+ return $cache;
+}
+
+/**
+ * Send a line giving PHP memory usage.
+ *
+ * @param bool $exact Print exact byte values instead of kibibytes (default: false)
+ */
+function wfDebugMem( $exact = false ) {
+ $mem = memory_get_usage();
+ if ( !$exact ) {
+ $mem = floor( $mem / 1024 ) . ' KiB';
+ } else {
+ $mem .= ' B';
+ }
+ wfDebug( "Memory usage: $mem\n" );
+}
+
+/**
+ * Send a line to a supplementary debug log file, if configured, or main debug
+ * log if not.
+ *
+ * To configure a supplementary log file, set $wgDebugLogGroups[$logGroup] to
+ * a string filename or an associative array mapping 'destination' to the
+ * desired filename. The associative array may also contain a 'sample' key
+ * with an integer value, specifying a sampling factor. Sampled log events
+ * will be emitted with a 1 in N random chance.
+ *
+ * @since 1.23 support for sampling log messages via $wgDebugLogGroups.
+ * @since 1.25 support for additional context data
+ * @since 1.25 sample behavior dependent on configured $wgMWLoggerDefaultSpi
+ *
+ * @param string $logGroup
+ * @param string $text
+ * @param string|bool $dest Destination of the message:
+ * - 'all': both to the log and HTML (debug toolbar or HTML comments)
+ * - 'private': only to the specific log if set in $wgDebugLogGroups and
+ * discarded otherwise
+ * For backward compatibility, it can also take a boolean:
+ * - true: same as 'all'
+ * - false: same as 'private'
+ * @param array $context Additional logging context data
+ */
+function wfDebugLog(
+ $logGroup, $text, $dest = 'all', array $context = []
+) {
+ $text = trim( $text );
+
+ $logger = LoggerFactory::getInstance( $logGroup );
+ $context['private'] = ( $dest === false || $dest === 'private' );
+ $logger->info( $text, $context );
+}
+
+/**
+ * Log for database errors
+ *
+ * @since 1.25 support for additional context data
+ *
+ * @param string $text Database error message.
+ * @param array $context Additional logging context data
+ */
+function wfLogDBError( $text, array $context = [] ) {
+ $logger = LoggerFactory::getInstance( 'wfLogDBError' );
+ $logger->error( trim( $text ), $context );
+}
+
+/**
+ * Throws a warning that $function is deprecated
+ *
+ * @param string $function
+ * @param string|bool $version Version of MediaWiki that the function
+ * was deprecated in (Added in 1.19).
+ * @param string|bool $component Added in 1.19.
+ * @param int $callerOffset How far up the call stack is the original
+ * caller. 2 = function that called the function that called
+ * wfDeprecated (Added in 1.20)
+ *
+ * @return null
+ */
+function wfDeprecated( $function, $version = false, $component = false, $callerOffset = 2 ) {
+ MWDebug::deprecated( $function, $version, $component, $callerOffset + 1 );
+}
+
+/**
+ * Send a warning either to the debug log or in a PHP error depending on
+ * $wgDevelopmentWarnings. To log warnings in production, use wfLogWarning() instead.
+ *
+ * @param string $msg Message to send
+ * @param int $callerOffset Number of items to go back in the backtrace to
+ * find the correct caller (1 = function calling wfWarn, ...)
+ * @param int $level PHP error level; defaults to E_USER_NOTICE;
+ * only used when $wgDevelopmentWarnings is true
+ */
+function wfWarn( $msg, $callerOffset = 1, $level = E_USER_NOTICE ) {
+ MWDebug::warning( $msg, $callerOffset + 1, $level, 'auto' );
+}
+
+/**
+ * Send a warning as a PHP error and the debug log. This is intended for logging
+ * warnings in production. For logging development warnings, use WfWarn instead.
+ *
+ * @param string $msg Message to send
+ * @param int $callerOffset Number of items to go back in the backtrace to
+ * find the correct caller (1 = function calling wfLogWarning, ...)
+ * @param int $level PHP error level; defaults to E_USER_WARNING
+ */
+function wfLogWarning( $msg, $callerOffset = 1, $level = E_USER_WARNING ) {
+ MWDebug::warning( $msg, $callerOffset + 1, $level, 'production' );
+}
+
+/**
+ * Log to a file without getting "file size exceeded" signals.
+ *
+ * Can also log to TCP or UDP with the syntax udp://host:port/prefix. This will
+ * send lines to the specified port, prefixed by the specified prefix and a space.
+ * @since 1.25 support for additional context data
+ *
+ * @param string $text
+ * @param string $file Filename
+ * @param array $context Additional logging context data
+ * @throws MWException
+ * @deprecated since 1.25 Use \MediaWiki\Logger\LegacyLogger::emit or UDPTransport
+ */
+function wfErrorLog( $text, $file, array $context = [] ) {
+ wfDeprecated( __METHOD__, '1.25' );
+ $logger = LoggerFactory::getInstance( 'wfErrorLog' );
+ $context['destination'] = $file;
+ $logger->info( trim( $text ), $context );
+}
+
+/**
+ * @todo document
+ */
+function wfLogProfilingData() {
+ global $wgDebugLogGroups, $wgDebugRawPage;
+
+ $context = RequestContext::getMain();
+ $request = $context->getRequest();
+
+ $profiler = Profiler::instance();
+ $profiler->setContext( $context );
+ $profiler->logData();
+
+ $config = $context->getConfig();
+ $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
+ if ( $config->get( 'StatsdServer' ) && $stats->hasData() ) {
+ try {
+ $statsdServer = explode( ':', $config->get( 'StatsdServer' ) );
+ $statsdHost = $statsdServer[0];
+ $statsdPort = isset( $statsdServer[1] ) ? $statsdServer[1] : 8125;
+ $statsdSender = new SocketSender( $statsdHost, $statsdPort );
+ $statsdClient = new SamplingStatsdClient( $statsdSender, true, false );
+ $statsdClient->setSamplingRates( $config->get( 'StatsdSamplingRates' ) );
+ $statsdClient->send( $stats->getData() );
+ } catch ( Exception $ex ) {
+ MWExceptionHandler::logException( $ex );
+ }
+ }
+
+ # Profiling must actually be enabled...
+ if ( $profiler instanceof ProfilerStub ) {
+ return;
+ }
+
+ if ( isset( $wgDebugLogGroups['profileoutput'] )
+ && $wgDebugLogGroups['profileoutput'] === false
+ ) {
+ // Explicitly disabled
+ return;
+ }
+ if ( !$wgDebugRawPage && wfIsDebugRawPage() ) {
+ return;
+ }
+
+ $ctx = [ 'elapsed' => $request->getElapsedTime() ];
+ if ( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
+ $ctx['forwarded_for'] = $_SERVER['HTTP_X_FORWARDED_FOR'];
+ }
+ if ( !empty( $_SERVER['HTTP_CLIENT_IP'] ) ) {
+ $ctx['client_ip'] = $_SERVER['HTTP_CLIENT_IP'];
+ }
+ if ( !empty( $_SERVER['HTTP_FROM'] ) ) {
+ $ctx['from'] = $_SERVER['HTTP_FROM'];
+ }
+ if ( isset( $ctx['forwarded_for'] ) ||
+ isset( $ctx['client_ip'] ) ||
+ isset( $ctx['from'] ) ) {
+ $ctx['proxy'] = $_SERVER['REMOTE_ADDR'];
+ }
+
+ // Don't load $wgUser at this late stage just for statistics purposes
+ // @todo FIXME: We can detect some anons even if it is not loaded.
+ // See User::getId()
+ $user = $context->getUser();
+ $ctx['anon'] = $user->isItemLoaded( 'id' ) && $user->isAnon();
+
+ // Command line script uses a FauxRequest object which does not have
+ // any knowledge about an URL and throw an exception instead.
+ try {
+ $ctx['url'] = urldecode( $request->getRequestURL() );
+ } catch ( Exception $ignored ) {
+ // no-op
+ }
+
+ $ctx['output'] = $profiler->getOutput();
+
+ $log = LoggerFactory::getInstance( 'profileoutput' );
+ $log->info( "Elapsed: {elapsed}; URL: <{url}>\n{output}", $ctx );
+}
+
+/**
+ * Increment a statistics counter
+ *
+ * @param string $key
+ * @param int $count
+ * @return void
+ */
+function wfIncrStats( $key, $count = 1 ) {
+ $stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
+ $stats->updateCount( $key, $count );
+}
+
+/**
+ * Check whether the wiki is in read-only mode.
+ *
+ * @return bool
+ */
+function wfReadOnly() {
+ return MediaWikiServices::getInstance()->getReadOnlyMode()
+ ->isReadOnly();
+}
+
+/**
+ * Check if the site is in read-only mode and return the message if so
+ *
+ * This checks wfConfiguredReadOnlyReason() and the main load balancer
+ * for replica DB lag. This may result in DB connection being made.
+ *
+ * @return string|bool String when in read-only mode; false otherwise
+ */
+function wfReadOnlyReason() {
+ return MediaWikiServices::getInstance()->getReadOnlyMode()
+ ->getReason();
+}
+
+/**
+ * Get the value of $wgReadOnly or the contents of $wgReadOnlyFile.
+ *
+ * @return string|bool String when in read-only mode; false otherwise
+ * @since 1.27
+ */
+function wfConfiguredReadOnlyReason() {
+ return MediaWikiServices::getInstance()->getConfiguredReadOnlyMode()
+ ->getReason();
+}
+
+/**
+ * Return a Language object from $langcode
+ *
+ * @param Language|string|bool $langcode Either:
+ * - a Language object
+ * - code of the language to get the message for, if it is
+ * a valid code create a language for that language, if
+ * it is a string but not a valid code then make a basic
+ * language object
+ * - a boolean: if it's false then use the global object for
+ * the current user's language (as a fallback for the old parameter
+ * functionality), or if it is true then use global object
+ * for the wiki's content language.
+ * @return Language
+ */
+function wfGetLangObj( $langcode = false ) {
+ # Identify which language to get or create a language object for.
+ # Using is_object here due to Stub objects.
+ if ( is_object( $langcode ) ) {
+ # Great, we already have the object (hopefully)!
+ return $langcode;
+ }
+
+ global $wgContLang, $wgLanguageCode;
+ if ( $langcode === true || $langcode === $wgLanguageCode ) {
+ # $langcode is the language code of the wikis content language object.
+ # or it is a boolean and value is true
+ return $wgContLang;
+ }
+
+ global $wgLang;
+ if ( $langcode === false || $langcode === $wgLang->getCode() ) {
+ # $langcode is the language code of user language object.
+ # or it was a boolean and value is false
+ return $wgLang;
+ }
+
+ $validCodes = array_keys( Language::fetchLanguageNames() );
+ if ( in_array( $langcode, $validCodes ) ) {
+ # $langcode corresponds to a valid language.
+ return Language::factory( $langcode );
+ }
+
+ # $langcode is a string, but not a valid language code; use content language.
+ wfDebug( "Invalid language code passed to wfGetLangObj, falling back to content language.\n" );
+ return $wgContLang;
+}
+
+/**
+ * This is the function for getting translated interface messages.
+ *
+ * @see Message class for documentation how to use them.
+ * @see https://www.mediawiki.org/wiki/Manual:Messages_API
+ *
+ * This function replaces all old wfMsg* functions.
+ *
+ * @param string|string[]|MessageSpecifier $key Message key, or array of keys, or a MessageSpecifier
+ * @param mixed $params,... Normal message parameters
+ * @return Message
+ *
+ * @since 1.17
+ *
+ * @see Message::__construct
+ */
+function wfMessage( $key /*...*/ ) {
+ $message = new Message( $key );
+
+ // We call Message::params() to reduce code duplication
+ $params = func_get_args();
+ array_shift( $params );
+ if ( $params ) {
+ call_user_func_array( [ $message, 'params' ], $params );
+ }
+
+ return $message;
+}
+
+/**
+ * This function accepts multiple message keys and returns a message instance
+ * for the first message which is non-empty. If all messages are empty then an
+ * instance of the first message key is returned.
+ *
+ * @param string|string[] $keys,... Message keys
+ * @return Message
+ *
+ * @since 1.18
+ *
+ * @see Message::newFallbackSequence
+ */
+function wfMessageFallback( /*...*/ ) {
+ $args = func_get_args();
+ return call_user_func_array( 'Message::newFallbackSequence', $args );
+}
+
+/**
+ * Replace message parameter keys on the given formatted output.
+ *
+ * @param string $message
+ * @param array $args
+ * @return string
+ * @private
+ */
+function wfMsgReplaceArgs( $message, $args ) {
+ # Fix windows line-endings
+ # Some messages are split with explode("\n", $msg)
+ $message = str_replace( "\r", '', $message );
+
+ // Replace arguments
+ if ( is_array( $args ) && $args ) {
+ if ( is_array( $args[0] ) ) {
+ $args = array_values( $args[0] );
+ }
+ $replacementKeys = [];
+ foreach ( $args as $n => $param ) {
+ $replacementKeys['$' . ( $n + 1 )] = $param;
+ }
+ $message = strtr( $message, $replacementKeys );
+ }
+
+ return $message;
+}
+
+/**
+ * Fetch server name for use in error reporting etc.
+ * Use real server name if available, so we know which machine
+ * in a server farm generated the current page.
+ *
+ * @return string
+ */
+function wfHostname() {
+ static $host;
+ if ( is_null( $host ) ) {
+ # Hostname overriding
+ global $wgOverrideHostname;
+ if ( $wgOverrideHostname !== false ) {
+ # Set static and skip any detection
+ $host = $wgOverrideHostname;
+ return $host;
+ }
+
+ if ( function_exists( 'posix_uname' ) ) {
+ // This function not present on Windows
+ $uname = posix_uname();
+ } else {
+ $uname = false;
+ }
+ if ( is_array( $uname ) && isset( $uname['nodename'] ) ) {
+ $host = $uname['nodename'];
+ } elseif ( getenv( 'COMPUTERNAME' ) ) {
+ # Windows computer name
+ $host = getenv( 'COMPUTERNAME' );
+ } else {
+ # This may be a virtual server.
+ $host = $_SERVER['SERVER_NAME'];
+ }
+ }
+ return $host;
+}
+
+/**
+ * Returns a script tag that stores the amount of time it took MediaWiki to
+ * handle the request in milliseconds as 'wgBackendResponseTime'.
+ *
+ * If $wgShowHostnames is true, the script will also set 'wgHostname' to the
+ * hostname of the server handling the request.
+ *
+ * @return string
+ */
+function wfReportTime() {
+ global $wgRequestTime, $wgShowHostnames;
+
+ $responseTime = round( ( microtime( true ) - $wgRequestTime ) * 1000 );
+ $reportVars = [ 'wgBackendResponseTime' => $responseTime ];
+ if ( $wgShowHostnames ) {
+ $reportVars['wgHostname'] = wfHostname();
+ }
+ return Skin::makeVariablesScript( $reportVars );
+}
+
+/**
+ * Safety wrapper for debug_backtrace().
+ *
+ * Will return an empty array if debug_backtrace is disabled, otherwise
+ * the output from debug_backtrace() (trimmed).
+ *
+ * @param int $limit This parameter can be used to limit the number of stack frames returned
+ *
+ * @return array Array of backtrace information
+ */
+function wfDebugBacktrace( $limit = 0 ) {
+ static $disabled = null;
+
+ if ( is_null( $disabled ) ) {
+ $disabled = !function_exists( 'debug_backtrace' );
+ if ( $disabled ) {
+ wfDebug( "debug_backtrace() is disabled\n" );
+ }
+ }
+ if ( $disabled ) {
+ return [];
+ }
+
+ if ( $limit ) {
+ return array_slice( debug_backtrace( DEBUG_BACKTRACE_PROVIDE_OBJECT, $limit + 1 ), 1 );
+ } else {
+ return array_slice( debug_backtrace(), 1 );
+ }
+}
+
+/**
+ * Get a debug backtrace as a string
+ *
+ * @param bool|null $raw If true, the return value is plain text. If false, HTML.
+ * Defaults to $wgCommandLineMode if unset.
+ * @return string
+ * @since 1.25 Supports $raw parameter.
+ */
+function wfBacktrace( $raw = null ) {
+ global $wgCommandLineMode;
+
+ if ( $raw === null ) {
+ $raw = $wgCommandLineMode;
+ }
+
+ if ( $raw ) {
+ $frameFormat = "%s line %s calls %s()\n";
+ $traceFormat = "%s";
+ } else {
+ $frameFormat = "<li>%s line %s calls %s()</li>\n";
+ $traceFormat = "<ul>\n%s</ul>\n";
+ }
+
+ $frames = array_map( function ( $frame ) use ( $frameFormat ) {
+ $file = !empty( $frame['file'] ) ? basename( $frame['file'] ) : '-';
+ $line = isset( $frame['line'] ) ? $frame['line'] : '-';
+ $call = $frame['function'];
+ if ( !empty( $frame['class'] ) ) {
+ $call = $frame['class'] . $frame['type'] . $call;
+ }
+ return sprintf( $frameFormat, $file, $line, $call );
+ }, wfDebugBacktrace() );
+
+ return sprintf( $traceFormat, implode( '', $frames ) );
+}
+
+/**
+ * Get the name of the function which called this function
+ * wfGetCaller( 1 ) is the function with the wfGetCaller() call (ie. __FUNCTION__)
+ * wfGetCaller( 2 ) [default] is the caller of the function running wfGetCaller()
+ * wfGetCaller( 3 ) is the parent of that.
+ *
+ * @param int $level
+ * @return string
+ */
+function wfGetCaller( $level = 2 ) {
+ $backtrace = wfDebugBacktrace( $level + 1 );
+ if ( isset( $backtrace[$level] ) ) {
+ return wfFormatStackFrame( $backtrace[$level] );
+ } else {
+ return 'unknown';
+ }
+}
+
+/**
+ * Return a string consisting of callers in the stack. Useful sometimes
+ * for profiling specific points.
+ *
+ * @param int $limit The maximum depth of the stack frame to return, or false for the entire stack.
+ * @return string
+ */
+function wfGetAllCallers( $limit = 3 ) {
+ $trace = array_reverse( wfDebugBacktrace() );
+ if ( !$limit || $limit > count( $trace ) - 1 ) {
+ $limit = count( $trace ) - 1;
+ }
+ $trace = array_slice( $trace, -$limit - 1, $limit );
+ return implode( '/', array_map( 'wfFormatStackFrame', $trace ) );
+}
+
+/**
+ * Return a string representation of frame
+ *
+ * @param array $frame
+ * @return string
+ */
+function wfFormatStackFrame( $frame ) {
+ if ( !isset( $frame['function'] ) ) {
+ return 'NO_FUNCTION_GIVEN';
+ }
+ return isset( $frame['class'] ) && isset( $frame['type'] ) ?
+ $frame['class'] . $frame['type'] . $frame['function'] :
+ $frame['function'];
+}
+
+/* Some generic result counters, pulled out of SearchEngine */
+
+/**
+ * @todo document
+ *
+ * @param int $offset
+ * @param int $limit
+ * @return string
+ */
+function wfShowingResults( $offset, $limit ) {
+ return wfMessage( 'showingresults' )->numParams( $limit, $offset + 1 )->parse();
+}
+
+/**
+ * Whether the client accept gzip encoding
+ *
+ * Uses the Accept-Encoding header to check if the client supports gzip encoding.
+ * Use this when considering to send a gzip-encoded response to the client.
+ *
+ * @param bool $force Forces another check even if we already have a cached result.
+ * @return bool
+ */
+function wfClientAcceptsGzip( $force = false ) {
+ static $result = null;
+ if ( $result === null || $force ) {
+ $result = false;
+ if ( isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
+ # @todo FIXME: We may want to blacklist some broken browsers
+ $m = [];
+ if ( preg_match(
+ '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
+ $_SERVER['HTTP_ACCEPT_ENCODING'],
+ $m
+ )
+ ) {
+ if ( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) {
+ $result = false;
+ return $result;
+ }
+ wfDebug( "wfClientAcceptsGzip: client accepts gzip.\n" );
+ $result = true;
+ }
+ }
+ }
+ return $result;
+}
+
+/**
+ * Escapes the given text so that it may be output using addWikiText()
+ * without any linking, formatting, etc. making its way through. This
+ * is achieved by substituting certain characters with HTML entities.
+ * As required by the callers, "<nowiki>" is not used.
+ *
+ * @param string $text Text to be escaped
+ * @return string
+ */
+function wfEscapeWikiText( $text ) {
+ global $wgEnableMagicLinks;
+ static $repl = null, $repl2 = null;
+ if ( $repl === null || defined( 'MW_PARSER_TEST' ) || defined( 'MW_PHPUNIT_TEST' ) ) {
+ // Tests depend upon being able to change $wgEnableMagicLinks, so don't cache
+ // in those situations
+ $repl = [
+ '"' => '"', '&' => '&', "'" => ''', '<' => '<',
+ '=' => '=', '>' => '>', '[' => '[', ']' => ']',
+ '{' => '{', '|' => '|', '}' => '}', ';' => ';',
+ "\n#" => "\n#", "\r#" => "\r#",
+ "\n*" => "\n*", "\r*" => "\r*",
+ "\n:" => "\n:", "\r:" => "\r:",
+ "\n " => "\n ", "\r " => "\r ",
+ "\n\n" => "\n ", "\r\n" => " \n",
+ "\n\r" => "\n ", "\r\r" => "\r ",
+ "\n\t" => "\n	", "\r\t" => "\r	", // "\n\t\n" is treated like "\n\n"
+ "\n----" => "\n----", "\r----" => "\r----",
+ '__' => '__', '://' => '://',
+ ];
+
+ $magicLinks = array_keys( array_filter( $wgEnableMagicLinks ) );
+ // We have to catch everything "\s" matches in PCRE
+ foreach ( $magicLinks as $magic ) {
+ $repl["$magic "] = "$magic ";
+ $repl["$magic\t"] = "$magic	";
+ $repl["$magic\r"] = "$magic ";
+ $repl["$magic\n"] = "$magic ";
+ $repl["$magic\f"] = "$magic";
+ }
+
+ // And handle protocols that don't use "://"
+ global $wgUrlProtocols;
+ $repl2 = [];
+ foreach ( $wgUrlProtocols as $prot ) {
+ if ( substr( $prot, -1 ) === ':' ) {
+ $repl2[] = preg_quote( substr( $prot, 0, -1 ), '/' );
+ }
+ }
+ $repl2 = $repl2 ? '/\b(' . implode( '|', $repl2 ) . '):/i' : '/^(?!)/';
+ }
+ $text = substr( strtr( "\n$text", $repl ), 1 );
+ $text = preg_replace( $repl2, '$1:', $text );
+ return $text;
+}
+
+/**
+ * Sets dest to source and returns the original value of dest
+ * If source is NULL, it just returns the value, it doesn't set the variable
+ * If force is true, it will set the value even if source is NULL
+ *
+ * @param mixed &$dest
+ * @param mixed $source
+ * @param bool $force
+ * @return mixed
+ */
+function wfSetVar( &$dest, $source, $force = false ) {
+ $temp = $dest;
+ if ( !is_null( $source ) || $force ) {
+ $dest = $source;
+ }
+ return $temp;
+}
+
+/**
+ * As for wfSetVar except setting a bit
+ *
+ * @param int &$dest
+ * @param int $bit
+ * @param bool $state
+ *
+ * @return bool
+ */
+function wfSetBit( &$dest, $bit, $state = true ) {
+ $temp = (bool)( $dest & $bit );
+ if ( !is_null( $state ) ) {
+ if ( $state ) {
+ $dest |= $bit;
+ } else {
+ $dest &= ~$bit;
+ }
+ }
+ return $temp;
+}
+
+/**
+ * A wrapper around the PHP function var_export().
+ * Either print it or add it to the regular output ($wgOut).
+ *
+ * @param mixed $var A PHP variable to dump.
+ */
+function wfVarDump( $var ) {
+ global $wgOut;
+ $s = str_replace( "\n", "<br />\n", var_export( $var, true ) . "\n" );
+ if ( headers_sent() || !isset( $wgOut ) || !is_object( $wgOut ) ) {
+ print $s;
+ } else {
+ $wgOut->addHTML( $s );
+ }
+}
+
+/**
+ * Provide a simple HTTP error.
+ *
+ * @param int|string $code
+ * @param string $label
+ * @param string $desc
+ */
+function wfHttpError( $code, $label, $desc ) {
+ global $wgOut;
+ HttpStatus::header( $code );
+ if ( $wgOut ) {
+ $wgOut->disable();
+ $wgOut->sendCacheControl();
+ }
+
+ MediaWiki\HeaderCallback::warnIfHeadersSent();
+ header( 'Content-type: text/html; charset=utf-8' );
+ print '<!DOCTYPE html>' .
+ '<html><head><title>' .
+ htmlspecialchars( $label ) .
+ '</title></head><body><h1>' .
+ htmlspecialchars( $label ) .
+ '</h1><p>' .
+ nl2br( htmlspecialchars( $desc ) ) .
+ "</p></body></html>\n";
+}
+
+/**
+ * Clear away any user-level output buffers, discarding contents.
+ *
+ * Suitable for 'starting afresh', for instance when streaming
+ * relatively large amounts of data without buffering, or wanting to
+ * output image files without ob_gzhandler's compression.
+ *
+ * The optional $resetGzipEncoding parameter controls suppression of
+ * the Content-Encoding header sent by ob_gzhandler; by default it
+ * is left. See comments for wfClearOutputBuffers() for why it would
+ * be used.
+ *
+ * Note that some PHP configuration options may add output buffer
+ * layers which cannot be removed; these are left in place.
+ *
+ * @param bool $resetGzipEncoding
+ */
+function wfResetOutputBuffers( $resetGzipEncoding = true ) {
+ if ( $resetGzipEncoding ) {
+ // Suppress Content-Encoding and Content-Length
+ // headers from 1.10+s wfOutputHandler
+ global $wgDisableOutputCompression;
+ $wgDisableOutputCompression = true;
+ }
+ while ( $status = ob_get_status() ) {
+ if ( isset( $status['flags'] ) ) {
+ $flags = PHP_OUTPUT_HANDLER_CLEANABLE | PHP_OUTPUT_HANDLER_REMOVABLE;
+ $deleteable = ( $status['flags'] & $flags ) === $flags;
+ } elseif ( isset( $status['del'] ) ) {
+ $deleteable = $status['del'];
+ } else {
+ // Guess that any PHP-internal setting can't be removed.
+ $deleteable = $status['type'] !== 0; /* PHP_OUTPUT_HANDLER_INTERNAL */
+ }
+ if ( !$deleteable ) {
+ // Give up, and hope the result doesn't break
+ // output behavior.
+ break;
+ }
+ if ( $status['name'] === 'MediaWikiTestCase::wfResetOutputBuffersBarrier' ) {
+ // Unit testing barrier to prevent this function from breaking PHPUnit.
+ break;
+ }
+ if ( !ob_end_clean() ) {
+ // Could not remove output buffer handler; abort now
+ // to avoid getting in some kind of infinite loop.
+ break;
+ }
+ if ( $resetGzipEncoding ) {
+ if ( $status['name'] == 'ob_gzhandler' ) {
+ // Reset the 'Content-Encoding' field set by this handler
+ // so we can start fresh.
+ header_remove( 'Content-Encoding' );
+ break;
+ }
+ }
+ }
+}
+
+/**
+ * More legible than passing a 'false' parameter to wfResetOutputBuffers():
+ *
+ * Clear away output buffers, but keep the Content-Encoding header
+ * produced by ob_gzhandler, if any.
+ *
+ * This should be used for HTTP 304 responses, where you need to
+ * preserve the Content-Encoding header of the real result, but
+ * also need to suppress the output of ob_gzhandler to keep to spec
+ * and avoid breaking Firefox in rare cases where the headers and
+ * body are broken over two packets.
+ */
+function wfClearOutputBuffers() {
+ wfResetOutputBuffers( false );
+}
+
+/**
+ * Converts an Accept-* header into an array mapping string values to quality
+ * factors
+ *
+ * @param string $accept
+ * @param string $def Default
+ * @return float[] Associative array of string => float pairs
+ */
+function wfAcceptToPrefs( $accept, $def = '*/*' ) {
+ # No arg means accept anything (per HTTP spec)
+ if ( !$accept ) {
+ return [ $def => 1.0 ];
+ }
+
+ $prefs = [];
+
+ $parts = explode( ',', $accept );
+
+ foreach ( $parts as $part ) {
+ # @todo FIXME: Doesn't deal with params like 'text/html; level=1'
+ $values = explode( ';', trim( $part ) );
+ $match = [];
+ if ( count( $values ) == 1 ) {
+ $prefs[$values[0]] = 1.0;
+ } elseif ( preg_match( '/q\s*=\s*(\d*\.\d+)/', $values[1], $match ) ) {
+ $prefs[$values[0]] = floatval( $match[1] );
+ }
+ }
+
+ return $prefs;
+}
+
+/**
+ * Checks if a given MIME type matches any of the keys in the given
+ * array. Basic wildcards are accepted in the array keys.
+ *
+ * Returns the matching MIME type (or wildcard) if a match, otherwise
+ * NULL if no match.
+ *
+ * @param string $type
+ * @param array $avail
+ * @return string
+ * @private
+ */
+function mimeTypeMatch( $type, $avail ) {
+ if ( array_key_exists( $type, $avail ) ) {
+ return $type;
+ } else {
+ $mainType = explode( '/', $type )[0];
+ if ( array_key_exists( "$mainType/*", $avail ) ) {
+ return "$mainType/*";
+ } elseif ( array_key_exists( '*/*', $avail ) ) {
+ return '*/*';
+ } else {
+ return null;
+ }
+ }
+}
+
+/**
+ * Returns the 'best' match between a client's requested internet media types
+ * and the server's list of available types. Each list should be an associative
+ * array of type to preference (preference is a float between 0.0 and 1.0).
+ * Wildcards in the types are acceptable.
+ *
+ * @param array $cprefs Client's acceptable type list
+ * @param array $sprefs Server's offered types
+ * @return string
+ *
+ * @todo FIXME: Doesn't handle params like 'text/plain; charset=UTF-8'
+ * XXX: generalize to negotiate other stuff
+ */
+function wfNegotiateType( $cprefs, $sprefs ) {
+ $combine = [];
+
+ foreach ( array_keys( $sprefs ) as $type ) {
+ $subType = explode( '/', $type )[1];
+ if ( $subType != '*' ) {
+ $ckey = mimeTypeMatch( $type, $cprefs );
+ if ( $ckey ) {
+ $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
+ }
+ }
+ }
+
+ foreach ( array_keys( $cprefs ) as $type ) {
+ $subType = explode( '/', $type )[1];
+ if ( $subType != '*' && !array_key_exists( $type, $sprefs ) ) {
+ $skey = mimeTypeMatch( $type, $sprefs );
+ if ( $skey ) {
+ $combine[$type] = $sprefs[$skey] * $cprefs[$type];
+ }
+ }
+ }
+
+ $bestq = 0;
+ $besttype = null;
+
+ foreach ( array_keys( $combine ) as $type ) {
+ if ( $combine[$type] > $bestq ) {
+ $besttype = $type;
+ $bestq = $combine[$type];
}
}
- return $message;
+
+ return $besttype;
+}
+
+/**
+ * Reference-counted warning suppression
+ *
+ * @deprecated since 1.26, use MediaWiki\suppressWarnings() directly
+ * @param bool $end
+ */
+function wfSuppressWarnings( $end = false ) {
+ MediaWiki\suppressWarnings( $end );
+}
+
+/**
+ * @deprecated since 1.26, use MediaWiki\restoreWarnings() directly
+ * Restore error level to previous value
+ */
+function wfRestoreWarnings() {
+ MediaWiki\suppressWarnings( true );
+}
+
+/**
+ * Get a timestamp string in one of various formats
+ *
+ * @param mixed $outputtype A timestamp in one of the supported formats, the
+ * function will autodetect which format is supplied and act accordingly.
+ * @param mixed $ts Optional timestamp to convert, default 0 for the current time
+ * @return string|bool String / false The same date in the format specified in $outputtype or false
+ */
+function wfTimestamp( $outputtype = TS_UNIX, $ts = 0 ) {
+ $ret = MWTimestamp::convert( $outputtype, $ts );
+ if ( $ret === false ) {
+ wfDebug( "wfTimestamp() fed bogus time value: TYPE=$outputtype; VALUE=$ts\n" );
+ }
+ return $ret;
}
/**
- * Replace message parameter keys on the given formatted output.
+ * Return a formatted timestamp, or null if input is null.
+ * For dealing with nullable timestamp columns in the database.
*
- * @param string $message
- * @param array $args
+ * @param int $outputtype
+ * @param string $ts
* @return string
- * @access private
*/
-function wfMsgReplaceArgs( $message, $args ) {
- static $replacementKeys = array( '$1', '$2', '$3', '$4', '$5', '$6', '$7', '$8', '$9' );
-
- # Fix windows line-endings
- # Some messages are split with explode("\n", $msg)
- $message = str_replace( "\r", '', $message );
-
- # Replace arguments
- if( count( $args ) ) {
- $message = str_replace( $replacementKeys, $args, $message );
+function wfTimestampOrNull( $outputtype = TS_UNIX, $ts = null ) {
+ if ( is_null( $ts ) ) {
+ return null;
+ } else {
+ return wfTimestamp( $outputtype, $ts );
}
- return $message;
}
/**
- * Return an HTML-escaped version of a message.
- * Parameter replacements, if any, are done *after* the HTML-escaping,
- * so parameters may contain HTML (eg links or form controls). Be sure
- * to pre-escape them if you really do want plaintext, or just wrap
- * the whole thing in htmlspecialchars().
+ * Convenience function; returns MediaWiki timestamp for the present time.
*
- * @param string $key
- * @param string ... parameters
* @return string
*/
-function wfMsgHtml( $key ) {
- $args = func_get_args();
- array_shift( $args );
- return wfMsgReplaceArgs( htmlspecialchars( wfMsgGetKey( $key, true ) ), $args );
+function wfTimestampNow() {
+ # return NOW
+ return MWTimestamp::now( TS_MW );
}
/**
- * Just like exit() but makes a note of it.
- * Commits open transactions except if the error parameter is set
+ * Check if the operating system is Windows
+ *
+ * @return bool True if it's Windows, false otherwise.
*/
-function wfAbruptExit( $error = false ){
- global $wgLoadBalancer;
- static $called = false;
- if ( $called ){
- exit();
- }
- $called = true;
-
- if( function_exists( 'debug_backtrace' ) ){ // PHP >= 4.3
- $bt = debug_backtrace();
- for($i = 0; $i < count($bt) ; $i++){
- $file = isset($bt[$i]['file']) ? $bt[$i]['file'] : "unknown";
- $line = isset($bt[$i]['line']) ? $bt[$i]['line'] : "unknown";
- wfDebug("WARNING: Abrupt exit in $file at line $line\n");
- }
- } else {
- wfDebug('WARNING: Abrupt exit\n');
- }
- if ( !$error ) {
- $wgLoadBalancer->closeAll();
+function wfIsWindows() {
+ static $isWindows = null;
+ if ( $isWindows === null ) {
+ $isWindows = strtoupper( substr( PHP_OS, 0, 3 ) ) === 'WIN';
}
- exit();
+ return $isWindows;
}
/**
- * @todo document
+ * Check if we are running under HHVM
+ *
+ * @return bool
*/
-function wfErrorExit() {
- wfAbruptExit( true );
+function wfIsHHVM() {
+ return defined( 'HHVM_VERSION' );
}
/**
- * Die with a backtrace
- * This is meant as a debugging aid to track down where bad data comes from.
- * Shouldn't be used in production code except maybe in "shouldn't happen" areas.
+ * Tries to get the system directory for temporary files. First
+ * $wgTmpDirectory is checked, and then the TMPDIR, TMP, and TEMP
+ * environment variables are then checked in sequence, then
+ * sys_get_temp_dir(), then upload_tmp_dir from php.ini.
+ *
+ * NOTE: When possible, use instead the tmpfile() function to create
+ * temporary files to avoid race conditions on file creation, etc.
*
- * @param string $msg Message shown when dieing.
+ * @return string
*/
-function wfDebugDieBacktrace( $msg = '' ) {
- global $wgCommandLineMode;
-
- $backtrace = wfBacktrace();
- if ( $backtrace !== false ) {
- if ( $wgCommandLineMode ) {
- $msg .= "\nBacktrace:\n$backtrace";
- } else {
- $msg .= "\n<p>Backtrace:</p>\n$backtrace";
- }
- }
- echo $msg;
- die( -1 );
-}
-
-function wfBacktrace() {
- global $wgCommandLineMode;
- if ( !function_exists( 'debug_backtrace' ) ) {
- return false;
- }
-
- if ( $wgCommandLineMode ) {
- $msg = '';
- } else {
- $msg = "<ul>\n";
- }
- $backtrace = debug_backtrace();
- foreach( $backtrace as $call ) {
- if( isset( $call['file'] ) ) {
- $f = explode( DIRECTORY_SEPARATOR, $call['file'] );
- $file = $f[count($f)-1];
- } else {
- $file = '-';
- }
- if( isset( $call['line'] ) ) {
- $line = $call['line'];
- } else {
- $line = '-';
- }
- if ( $wgCommandLineMode ) {
- $msg .= "$file line $line calls ";
- } else {
- $msg .= '<li>' . $file . ' line ' . $line . ' calls ';
- }
- if( !empty( $call['class'] ) ) $msg .= $call['class'] . '::';
- $msg .= $call['function'] . '()';
+function wfTempDir() {
+ global $wgTmpDirectory;
- if ( $wgCommandLineMode ) {
- $msg .= "\n";
- } else {
- $msg .= "</li>\n";
- }
- }
- if ( $wgCommandLineMode ) {
- $msg .= "\n";
- } else {
- $msg .= "</ul>\n";
+ if ( $wgTmpDirectory !== false ) {
+ return $wgTmpDirectory;
}
- return $msg;
-}
-
-
-/* Some generic result counters, pulled out of SearchEngine */
-
-
-/**
- * @todo document
- */
-function wfShowingResults( $offset, $limit ) {
- global $wgLang;
- return wfMsg( 'showingresults', $wgLang->formatNum( $limit ), $wgLang->formatNum( $offset+1 ) );
+ return TempFSFile::getUsableTempDirectory();
}
/**
- * @todo document
+ * Make directory, and make all parent directories if they don't exist
+ *
+ * @param string $dir Full path to directory to create
+ * @param int $mode Chmod value to use, default is $wgDirectoryMode
+ * @param string $caller Optional caller param for debugging.
+ * @throws MWException
+ * @return bool
*/
-function wfShowingResultsNum( $offset, $limit, $num ) {
- global $wgLang;
- return wfMsg( 'showingresultsnum', $wgLang->formatNum( $limit ), $wgLang->formatNum( $offset+1 ), $wgLang->formatNum( $num ) );
-}
+function wfMkdirParents( $dir, $mode = null, $caller = null ) {
+ global $wgDirectoryMode;
-/**
- * @todo document
- */
-function wfViewPrevNext( $offset, $limit, $link, $query = '', $atend = false ) {
- global $wgUser, $wgLang;
- $fmtLimit = $wgLang->formatNum( $limit );
- $prev = wfMsg( 'prevn', $fmtLimit );
- $next = wfMsg( 'nextn', $fmtLimit );
-
- if( is_object( $link ) ) {
- $title =& $link;
- } else {
- $title = Title::newFromText( $link );
- if( is_null( $title ) ) {
- return false;
- }
+ if ( FileBackend::isStoragePath( $dir ) ) { // sanity
+ throw new MWException( __FUNCTION__ . " given storage path '$dir'." );
}
-
- $sk = $wgUser->getSkin();
- if ( 0 != $offset ) {
- $po = $offset - $limit;
- if ( $po < 0 ) { $po = 0; }
- $q = "limit={$limit}&offset={$po}";
- if ( '' != $query ) { $q .= '&'.$query; }
- $plink = '<a href="' . $title->escapeLocalUrl( $q ) . "\">{$prev}</a>";
- } else { $plink = $prev; }
- $no = $offset + $limit;
- $q = 'limit='.$limit.'&offset='.$no;
- if ( '' != $query ) { $q .= '&'.$query; }
+ if ( !is_null( $caller ) ) {
+ wfDebug( "$caller: called wfMkdirParents($dir)\n" );
+ }
- if ( $atend ) {
- $nlink = $next;
- } else {
- $nlink = '<a href="' . $title->escapeLocalUrl( $q ) . "\">{$next}</a>";
+ if ( strval( $dir ) === '' || is_dir( $dir ) ) {
+ return true;
}
- $nums = wfNumLink( $offset, 20, $title, $query ) . ' | ' .
- wfNumLink( $offset, 50, $title, $query ) . ' | ' .
- wfNumLink( $offset, 100, $title, $query ) . ' | ' .
- wfNumLink( $offset, 250, $title, $query ) . ' | ' .
- wfNumLink( $offset, 500, $title, $query );
- return wfMsg( 'viewprevnext', $plink, $nlink, $nums );
-}
+ $dir = str_replace( [ '\\', '/' ], DIRECTORY_SEPARATOR, $dir );
-/**
- * @todo document
- */
-function wfNumLink( $offset, $limit, &$title, $query = '' ) {
- global $wgUser, $wgLang;
- if ( '' == $query ) { $q = ''; }
- else { $q = $query.'&'; }
- $q .= 'limit='.$limit.'&offset='.$offset;
+ if ( is_null( $mode ) ) {
+ $mode = $wgDirectoryMode;
+ }
- $fmtLimit = $wgLang->formatNum( $limit );
- $s = '<a href="' . $title->escapeLocalUrl( $q ) . "\">{$fmtLimit}</a>";
- return $s;
-}
+ // Turn off the normal warning, we're doing our own below
+ MediaWiki\suppressWarnings();
+ $ok = mkdir( $dir, $mode, true ); // PHP5 <3
+ MediaWiki\restoreWarnings();
-/**
- * @todo document
- * @todo FIXME: we may want to blacklist some broken browsers
- *
- * @return bool Whereas client accept gzip compression
- */
-function wfClientAcceptsGzip() {
- global $wgUseGzip;
- if( $wgUseGzip ) {
- # FIXME: we may want to blacklist some broken browsers
- if( preg_match(
- '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
- $_SERVER['HTTP_ACCEPT_ENCODING'],
- $m ) ) {
- if( isset( $m[2] ) && ( $m[1] == 'q' ) && ( $m[2] == 0 ) ) return false;
- wfDebug( " accepts gzip\n" );
+ if ( !$ok ) {
+ // directory may have been created on another request since we last checked
+ if ( is_dir( $dir ) ) {
return true;
}
+
+ // PHP doesn't report the path in its warning message, so add our own to aid in diagnosis.
+ wfLogWarning( sprintf( "failed to mkdir \"%s\" mode 0%o", $dir, $mode ) );
+ }
+ return $ok;
+}
+
+/**
+ * Remove a directory and all its content.
+ * Does not hide error.
+ * @param string $dir
+ */
+function wfRecursiveRemoveDir( $dir ) {
+ wfDebug( __FUNCTION__ . "( $dir )\n" );
+ // taken from https://secure.php.net/manual/en/function.rmdir.php#98622
+ if ( is_dir( $dir ) ) {
+ $objects = scandir( $dir );
+ foreach ( $objects as $object ) {
+ if ( $object != "." && $object != ".." ) {
+ if ( filetype( $dir . '/' . $object ) == "dir" ) {
+ wfRecursiveRemoveDir( $dir . '/' . $object );
+ } else {
+ unlink( $dir . '/' . $object );
+ }
+ }
+ }
+ reset( $objects );
+ rmdir( $dir );
}
- return false;
}
/**
- * Yay, more global functions!
+ * @param int $nr The number to format
+ * @param int $acc The number of digits after the decimal point, default 2
+ * @param bool $round Whether or not to round the value, default true
+ * @return string
*/
-function wfCheckLimits( $deflimit = 50, $optionname = 'rclimit' ) {
- global $wgRequest;
- return $wgRequest->getLimitOffset( $deflimit, $optionname );
+function wfPercent( $nr, $acc = 2, $round = true ) {
+ $ret = sprintf( "%.${acc}f", $nr );
+ return $round ? round( $ret, $acc ) . '%' : "$ret%";
}
/**
- * Escapes the given text so that it may be output using addWikiText()
- * without any linking, formatting, etc. making its way through. This
- * is achieved by substituting certain characters with HTML entities.
- * As required by the callers, <nowiki> is not used. It currently does
- * not filter out characters which have special meaning only at the
- * start of a line, such as "*".
+ * Safety wrapper around ini_get() for boolean settings.
+ * The values returned from ini_get() are pre-normalized for settings
+ * set via php.ini or php_flag/php_admin_flag... but *not*
+ * for those set via php_value/php_admin_value.
*
- * @param string $text Text to be escaped
- */
-function wfEscapeWikiText( $text ) {
- $text = str_replace(
- array( '[', '|', '\'', 'ISBN ' , '://' , "\n=", '{{' ),
- array( '[', '|', ''', 'ISBN ', '://' , "\n=", '{{' ),
- htmlspecialchars($text) );
- return $text;
-}
-
-/**
- * @todo document
+ * It's fairly common for people to use php_value instead of php_flag,
+ * which can leave you with an 'off' setting giving a false positive
+ * for code that just takes the ini_get() return value as a boolean.
+ *
+ * To make things extra interesting, setting via php_value accepts
+ * "true" and "yes" as true, but php.ini and php_flag consider them false. :)
+ * Unrecognized values go false... again opposite PHP's own coercion
+ * from string to bool.
+ *
+ * Luckily, 'properly' set settings will always come back as '0' or '1',
+ * so we only have to worry about them and the 'improper' settings.
+ *
+ * I frickin' hate PHP... :P
+ *
+ * @param string $setting
+ * @return bool
*/
-function wfQuotedPrintable( $string, $charset = '' ) {
- # Probably incomplete; see RFC 2045
- if( empty( $charset ) ) {
- global $wgInputEncoding;
- $charset = $wgInputEncoding;
- }
- $charset = strtoupper( $charset );
- $charset = str_replace( 'ISO-8859', 'ISO8859', $charset ); // ?
-
- $illegal = '\x00-\x08\x0b\x0c\x0e-\x1f\x7f-\xff=';
- $replace = $illegal . '\t ?_';
- if( !preg_match( "/[$illegal]/", $string ) ) return $string;
- $out = "=?$charset?Q?";
- $out .= preg_replace( "/([$replace])/e", 'sprintf("=%02X",ord("$1"))', $string );
- $out .= '?=';
- return $out;
+function wfIniGetBool( $setting ) {
+ $val = strtolower( ini_get( $setting ) );
+ // 'on' and 'true' can't have whitespace around them, but '1' can.
+ return $val == 'on'
+ || $val == 'true'
+ || $val == 'yes'
+ || preg_match( "/^\s*[+-]?0*[1-9]/", $val ); // approx C atoi() function
}
/**
- * Returns an escaped string suitable for inclusion in a string literal
- * for JavaScript source code.
- * Illegal control characters are assumed not to be present.
+ * Version of escapeshellarg() that works better on Windows.
*
- * @param string $string
+ * Originally, this fixed the incorrect use of single quotes on Windows
+ * (https://bugs.php.net/bug.php?id=26285) and the locale problems on Linux in
+ * PHP 5.2.6+ (bug backported to earlier distro releases of PHP).
+ *
+ * @param string $args,... strings to escape and glue together,
+ * or a single array of strings parameter
* @return string
+ * @deprecated since 1.30 use MediaWiki\Shell::escape()
*/
-function wfEscapeJsString( $string ) {
- // See ECMA 262 section 7.8.4 for string literal format
- $pairs = array(
- "\\" => "\\\\",
- "\"" => "\\\"",
- '\'' => '\\\'',
- "\n" => "\\n",
- "\r" => "\\r",
-
- # To avoid closing the element or CDATA section
- "<" => "\\x3c",
- ">" => "\\x3e",
- );
- return strtr( $string, $pairs );
-}
+function wfEscapeShellArg( /*...*/ ) {
+ $args = func_get_args();
-/**
- * @todo document
- * @return float
- */
-function wfTime() {
- $st = explode( ' ', microtime() );
- return (float)$st[0] + (float)$st[1];
+ return call_user_func_array( Shell::class . '::escape', $args );
}
/**
- * Changes the first character to an HTML entity
+ * Check if wfShellExec() is effectively disabled via php.ini config
+ *
+ * @return bool|string False or 'disabled'
+ * @since 1.22
+ * @deprecated since 1.30 use MediaWiki\Shell::isDisabled()
*/
-function wfHtmlEscapeFirst( $text ) {
- $ord = ord($text);
- $newText = substr($text, 1);
- return "&#$ord;$newText";
+function wfShellExecDisabled() {
+ return Shell::isDisabled() ? 'disabled' : false;
}
/**
- * Sets dest to source and returns the original value of dest
- * If source is NULL, it just returns the value, it doesn't set the variable
- */
-function wfSetVar( &$dest, $source ) {
- $temp = $dest;
- if ( !is_null( $source ) ) {
- $dest = $source;
+ * Execute a shell command, with time and memory limits mirrored from the PHP
+ * configuration if supported.
+ *
+ * @param string|string[] $cmd If string, a properly shell-escaped command line,
+ * or an array of unescaped arguments, in which case each value will be escaped
+ * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
+ * @param null|mixed &$retval Optional, will receive the program's exit code.
+ * (non-zero is usually failure). If there is an error from
+ * read, select, or proc_open(), this will be set to -1.
+ * @param array $environ Optional environment variables which should be
+ * added to the executed command environment.
+ * @param array $limits Optional array with limits(filesize, memory, time, walltime)
+ * this overwrites the global wgMaxShell* limits.
+ * @param array $options Array of options:
+ * - duplicateStderr: Set this to true to duplicate stderr to stdout,
+ * including errors from limit.sh
+ * - profileMethod: By default this function will profile based on the calling
+ * method. Set this to a string for an alternative method to profile from
+ *
+ * @return string Collected stdout as a string
+ * @deprecated since 1.30 use class MediaWiki\Shell\Shell
+ */
+function wfShellExec( $cmd, &$retval = null, $environ = [],
+ $limits = [], $options = []
+) {
+ if ( Shell::isDisabled() ) {
+ $retval = 1;
+ // Backwards compatibility be upon us...
+ return 'Unable to run external programs, proc_open() is disabled.';
}
- return $temp;
-}
-/**
- * As for wfSetVar except setting a bit
- */
-function wfSetBit( &$dest, $bit, $state = true ) {
- $temp = (bool)($dest & $bit );
- if ( !is_null( $state ) ) {
- if ( $state ) {
- $dest |= $bit;
- } else {
- $dest &= ~$bit;
- }
+ if ( is_array( $cmd ) ) {
+ $cmd = Shell::escape( $cmd );
}
- return $temp;
-}
-/**
- * This function takes two arrays as input, and returns a CGI-style string, e.g.
- * "days=7&limit=100". Options in the first array override options in the second.
- * Options set to "" will not be output.
- */
-function wfArrayToCGI( $array1, $array2 = NULL )
-{
- if ( !is_null( $array2 ) ) {
- $array1 = $array1 + $array2;
+ $includeStderr = isset( $options['duplicateStderr'] ) && $options['duplicateStderr'];
+ $profileMethod = isset( $options['profileMethod'] ) ? $options['profileMethod'] : wfGetCaller();
+
+ try {
+ $result = Shell::command( [] )
+ ->unsafeParams( (array)$cmd )
+ ->environment( $environ )
+ ->limits( $limits )
+ ->includeStderr( $includeStderr )
+ ->profileMethod( $profileMethod )
+ ->execute();
+ } catch ( ProcOpenError $ex ) {
+ $retval = -1;
+ return '';
}
- $cgi = '';
- foreach ( $array1 as $key => $value ) {
- if ( '' !== $value ) {
- if ( '' != $cgi ) {
- $cgi .= '&';
- }
- $cgi .= urlencode( $key ) . '=' . urlencode( $value );
- }
- }
- return $cgi;
+ $retval = $result->getExitCode();
+
+ return $result->getStdout();
}
/**
- * This is obsolete, use SquidUpdate::purge()
- * @deprecated
+ * Execute a shell command, returning both stdout and stderr. Convenience
+ * function, as all the arguments to wfShellExec can become unwieldy.
+ *
+ * @note This also includes errors from limit.sh, e.g. if $wgMaxShellFileSize is exceeded.
+ * @param string|string[] $cmd If string, a properly shell-escaped command line,
+ * or an array of unescaped arguments, in which case each value will be escaped
+ * Example: [ 'convert', '-font', 'font name' ] would produce "'convert' '-font' 'font name'"
+ * @param null|mixed &$retval Optional, will receive the program's exit code.
+ * (non-zero is usually failure)
+ * @param array $environ Optional environment variables which should be
+ * added to the executed command environment.
+ * @param array $limits Optional array with limits(filesize, memory, time, walltime)
+ * this overwrites the global wgMaxShell* limits.
+ * @return string Collected stdout and stderr as a string
+ * @deprecated since 1.30 use class MediaWiki\Shell\Shell
+ */
+function wfShellExecWithStderr( $cmd, &$retval = null, $environ = [], $limits = [] ) {
+ return wfShellExec( $cmd, $retval, $environ, $limits,
+ [ 'duplicateStderr' => true, 'profileMethod' => wfGetCaller() ] );
+}
+
+/**
+ * Formerly set the locale for locale-sensitive operations
+ *
+ * This is now done in Setup.php.
+ *
+ * @deprecated since 1.30, no longer needed
+ * @see $wgShellLocale
*/
-function wfPurgeSquidServers ($urlArr) {
- SquidUpdate::purge( $urlArr );
+function wfInitShellLocale() {
}
/**
- * Windows-compatible version of escapeshellarg()
- * Windows doesn't recognise single-quotes in the shell, but the escapeshellarg()
- * function puts single quotes in regardless of OS
+ * Generate a shell-escaped command line string to run a MediaWiki cli script.
+ * Note that $parameters should be a flat array and an option with an argument
+ * should consist of two consecutive items in the array (do not use "--option value").
+ *
+ * @param string $script MediaWiki cli script path
+ * @param array $parameters Arguments and options to the script
+ * @param array $options Associative array of options:
+ * 'php': The path to the php executable
+ * 'wrapper': Path to a PHP wrapper to handle the maintenance script
+ * @return string
*/
-function wfEscapeShellArg( ) {
- $args = func_get_args();
- $first = true;
- $retVal = '';
- foreach ( $args as $arg ) {
- if ( !$first ) {
- $retVal .= ' ';
- } else {
- $first = false;
- }
-
- if ( wfIsWindows() ) {
- $retVal .= '"' . str_replace( '"','\"', $arg ) . '"';
- } else {
- $retVal .= escapeshellarg( $arg );
- }
+function wfShellWikiCmd( $script, array $parameters = [], array $options = [] ) {
+ global $wgPhpCli;
+ // Give site config file a chance to run the script in a wrapper.
+ // The caller may likely want to call wfBasename() on $script.
+ Hooks::run( 'wfShellWikiCmd', [ &$script, &$parameters, &$options ] );
+ $cmd = isset( $options['php'] ) ? [ $options['php'] ] : [ $wgPhpCli ];
+ if ( isset( $options['wrapper'] ) ) {
+ $cmd[] = $options['wrapper'];
}
- return $retVal;
+ $cmd[] = $script;
+ // Escape each parameter for shell
+ return Shell::escape( array_merge( $cmd, $parameters ) );
}
/**
* wfMerge attempts to merge differences between three texts.
* Returns true for a clean merge and false for failure or a conflict.
+ *
+ * @param string $old
+ * @param string $mine
+ * @param string $yours
+ * @param string &$result
+ * @return bool
*/
-function wfMerge( $old, $mine, $yours, &$result ){
+function wfMerge( $old, $mine, $yours, &$result ) {
global $wgDiff3;
# This check may also protect against code injection in
# case of broken installations.
- if(! file_exists( $wgDiff3 ) ){
+ MediaWiki\suppressWarnings();
+ $haveDiff3 = $wgDiff3 && file_exists( $wgDiff3 );
+ MediaWiki\restoreWarnings();
+
+ if ( !$haveDiff3 ) {
wfDebug( "diff3 not found\n" );
return false;
}
$mytextFile = fopen( $mytextName = tempnam( $td, 'merge-mine-' ), 'w' );
$yourtextFile = fopen( $yourtextName = tempnam( $td, 'merge-your-' ), 'w' );
- fwrite( $oldtextFile, $old ); fclose( $oldtextFile );
- fwrite( $mytextFile, $mine ); fclose( $mytextFile );
- fwrite( $yourtextFile, $yours ); fclose( $yourtextFile );
+ # NOTE: diff3 issues a warning to stderr if any of the files does not end with
+ # a newline character. To avoid this, we normalize the trailing whitespace before
+ # creating the diff.
+
+ fwrite( $oldtextFile, rtrim( $old ) . "\n" );
+ fclose( $oldtextFile );
+ fwrite( $mytextFile, rtrim( $mine ) . "\n" );
+ fclose( $mytextFile );
+ fwrite( $yourtextFile, rtrim( $yours ) . "\n" );
+ fclose( $yourtextFile );
# Check for a conflict
- $cmd = $wgDiff3 . ' -a --overlap-only ' .
- wfEscapeShellArg( $mytextName ) . ' ' .
- wfEscapeShellArg( $oldtextName ) . ' ' .
- wfEscapeShellArg( $yourtextName );
+ $cmd = Shell::escape( $wgDiff3, '-a', '--overlap-only', $mytextName,
+ $oldtextName, $yourtextName );
$handle = popen( $cmd, 'r' );
- if( fgets( $handle, 1024 ) ){
+ if ( fgets( $handle, 1024 ) ) {
$conflict = true;
} else {
$conflict = false;
pclose( $handle );
# Merge differences
- $cmd = $wgDiff3 . ' -a -e --merge ' .
- wfEscapeShellArg( $mytextName, $oldtextName, $yourtextName );
+ $cmd = Shell::escape( $wgDiff3, '-a', '-e', '--merge', $mytextName,
+ $oldtextName, $yourtextName );
$handle = popen( $cmd, 'r' );
$result = '';
do {
$result .= $data;
} while ( true );
pclose( $handle );
- unlink( $mytextName ); unlink( $oldtextName ); unlink( $yourtextName );
+ unlink( $mytextName );
+ unlink( $oldtextName );
+ unlink( $yourtextName );
- if ( $result === '' && $old !== '' && $conflict == false ) {
+ if ( $result === '' && $old !== '' && !$conflict ) {
wfDebug( "Unexpected null result from diff3. Command: $cmd\n" );
$conflict = true;
}
- return ! $conflict;
+ return !$conflict;
}
/**
- * @todo document
+ * Returns unified plain-text diff of two texts.
+ * "Useful" for machine processing of diffs.
+ *
+ * @deprecated since 1.25, use DiffEngine/UnifiedDiffFormatter directly
+ *
+ * @param string $before The text before the changes.
+ * @param string $after The text after the changes.
+ * @param string $params Command-line options for the diff command.
+ * @return string Unified diff of $before and $after
+ */
+function wfDiff( $before, $after, $params = '-u' ) {
+ if ( $before == $after ) {
+ return '';
+ }
+
+ global $wgDiff;
+ MediaWiki\suppressWarnings();
+ $haveDiff = $wgDiff && file_exists( $wgDiff );
+ MediaWiki\restoreWarnings();
+
+ # This check may also protect against code injection in
+ # case of broken installations.
+ if ( !$haveDiff ) {
+ wfDebug( "diff executable not found\n" );
+ $diffs = new Diff( explode( "\n", $before ), explode( "\n", $after ) );
+ $format = new UnifiedDiffFormatter();
+ return $format->format( $diffs );
+ }
+
+ # Make temporary files
+ $td = wfTempDir();
+ $oldtextFile = fopen( $oldtextName = tempnam( $td, 'merge-old-' ), 'w' );
+ $newtextFile = fopen( $newtextName = tempnam( $td, 'merge-your-' ), 'w' );
+
+ fwrite( $oldtextFile, $before );
+ fclose( $oldtextFile );
+ fwrite( $newtextFile, $after );
+ fclose( $newtextFile );
+
+ // Get the diff of the two files
+ $cmd = "$wgDiff " . $params . ' ' . Shell::escape( $oldtextName, $newtextName );
+
+ $h = popen( $cmd, 'r' );
+ if ( !$h ) {
+ unlink( $oldtextName );
+ unlink( $newtextName );
+ throw new Exception( __METHOD__ . '(): popen() failed' );
+ }
+
+ $diff = '';
+
+ do {
+ $data = fread( $h, 8192 );
+ if ( strlen( $data ) == 0 ) {
+ break;
+ }
+ $diff .= $data;
+ } while ( true );
+
+ // Clean up
+ pclose( $h );
+ unlink( $oldtextName );
+ unlink( $newtextName );
+
+ // Kill the --- and +++ lines. They're not useful.
+ $diff_lines = explode( "\n", $diff );
+ if ( isset( $diff_lines[0] ) && strpos( $diff_lines[0], '---' ) === 0 ) {
+ unset( $diff_lines[0] );
+ }
+ if ( isset( $diff_lines[1] ) && strpos( $diff_lines[1], '+++' ) === 0 ) {
+ unset( $diff_lines[1] );
+ }
+
+ $diff = implode( "\n", $diff_lines );
+
+ return $diff;
+}
+
+/**
+ * This function works like "use VERSION" in Perl, the program will die with a
+ * backtrace if the current version of PHP is less than the version provided
+ *
+ * This is useful for extensions which due to their nature are not kept in sync
+ * with releases, and might depend on other versions of PHP than the main code
+ *
+ * Note: PHP might die due to parsing errors in some cases before it ever
+ * manages to call this function, such is life
+ *
+ * @see perldoc -f use
+ *
+ * @param string|int|float $req_ver The version to check, can be a string, an integer, or a float
+ *
+ * @deprecated since 1.30
+ *
+ * @throws MWException
*/
-function wfVarDump( $var ) {
- global $wgOut;
- $s = str_replace("\n","<br />\n", var_export( $var, true ) . "\n");
- if ( headers_sent() || !@is_object( $wgOut ) ) {
- print $s;
- } else {
- $wgOut->addHTML( $s );
+function wfUsePHP( $req_ver ) {
+ $php_ver = PHP_VERSION;
+
+ if ( version_compare( $php_ver, (string)$req_ver, '<' ) ) {
+ throw new MWException( "PHP $req_ver required--this is only $php_ver" );
}
}
/**
- * Provide a simple HTTP error.
+ * This function works like "use VERSION" in Perl except it checks the version
+ * of MediaWiki, the program will die with a backtrace if the current version
+ * of MediaWiki is less than the version provided.
+ *
+ * This is useful for extensions which due to their nature are not kept in sync
+ * with releases
+ *
+ * Note: Due to the behavior of PHP's version_compare() which is used in this
+ * function, if you want to allow the 'wmf' development versions add a 'c' (or
+ * any single letter other than 'a', 'b' or 'p') as a post-fix to your
+ * targeted version number. For example if you wanted to allow any variation
+ * of 1.22 use `wfUseMW( '1.22c' )`. Using an 'a' or 'b' instead of 'c' will
+ * not result in the same comparison due to the internal logic of
+ * version_compare().
+ *
+ * @see perldoc -f use
+ *
+ * @deprecated since 1.26, use the "requires" property of extension.json
+ * @param string|int|float $req_ver The version to check, can be a string, an integer, or a float
+ * @throws MWException
*/
-function wfHttpError( $code, $label, $desc ) {
- global $wgOut;
- $wgOut->disable();
- header( "HTTP/1.0 $code $label" );
- header( "Status: $code $label" );
- $wgOut->sendCacheControl();
-
- header( 'Content-type: text/html' );
- print "<html><head><title>" .
- htmlspecialchars( $label ) .
- "</title></head><body><h1>" .
- htmlspecialchars( $label ) .
- "</h1><p>" .
- htmlspecialchars( $desc ) .
- "</p></body></html>\n";
+function wfUseMW( $req_ver ) {
+ global $wgVersion;
+
+ if ( version_compare( $wgVersion, (string)$req_ver, '<' ) ) {
+ throw new MWException( "MediaWiki $req_ver required--this is only $wgVersion" );
+ }
}
/**
- * Converts an Accept-* header into an array mapping string values to quality
- * factors
+ * Return the final portion of a pathname.
+ * Reimplemented because PHP5's "basename()" is buggy with multibyte text.
+ * https://bugs.php.net/bug.php?id=33898
+ *
+ * PHP's basename() only considers '\' a pathchar on Windows and Netware.
+ * We'll consider it so always, as we don't want '\s' in our Unix paths either.
+ *
+ * @param string $path
+ * @param string $suffix String to remove if present
+ * @return string
*/
-function wfAcceptToPrefs( $accept, $def = '*/*' ) {
- # No arg means accept anything (per HTTP spec)
- if( !$accept ) {
- return array( $def => 1 );
+function wfBaseName( $path, $suffix = '' ) {
+ if ( $suffix == '' ) {
+ $encSuffix = '';
+ } else {
+ $encSuffix = '(?:' . preg_quote( $suffix, '#' ) . ')?';
}
- $prefs = array();
+ $matches = [];
+ if ( preg_match( "#([^/\\\\]*?){$encSuffix}[/\\\\]*$#", $path, $matches ) ) {
+ return $matches[1];
+ } else {
+ return '';
+ }
+}
- $parts = explode( ',', $accept );
+/**
+ * Generate a relative path name to the given file.
+ * May explode on non-matching case-insensitive paths,
+ * funky symlinks, etc.
+ *
+ * @param string $path Absolute destination path including target filename
+ * @param string $from Absolute source path, directory only
+ * @return string
+ */
+function wfRelativePath( $path, $from ) {
+ // Normalize mixed input on Windows...
+ $path = str_replace( '/', DIRECTORY_SEPARATOR, $path );
+ $from = str_replace( '/', DIRECTORY_SEPARATOR, $from );
+
+ // Trim trailing slashes -- fix for drive root
+ $path = rtrim( $path, DIRECTORY_SEPARATOR );
+ $from = rtrim( $from, DIRECTORY_SEPARATOR );
+
+ $pieces = explode( DIRECTORY_SEPARATOR, dirname( $path ) );
+ $against = explode( DIRECTORY_SEPARATOR, $from );
+
+ if ( $pieces[0] !== $against[0] ) {
+ // Non-matching Windows drive letters?
+ // Return a full path.
+ return $path;
+ }
+
+ // Trim off common prefix
+ while ( count( $pieces ) && count( $against )
+ && $pieces[0] == $against[0] ) {
+ array_shift( $pieces );
+ array_shift( $against );
+ }
- foreach( $parts as $part ) {
- # FIXME: doesn't deal with params like 'text/html; level=1'
- @list( $value, $qpart ) = explode( ';', $part );
- if( !isset( $qpart ) ) {
- $prefs[$value] = 1;
- } elseif( preg_match( '/q\s*=\s*(\d*\.\d+)/', $qpart, $match ) ) {
- $prefs[$value] = $match[1];
- }
+ // relative dots to bump us to the parent
+ while ( count( $against ) ) {
+ array_unshift( $pieces, '..' );
+ array_shift( $against );
}
- return $prefs;
+ array_push( $pieces, wfBaseName( $path ) );
+
+ return implode( DIRECTORY_SEPARATOR, $pieces );
}
/**
- * Checks if a given MIME type matches any of the keys in the given
- * array. Basic wildcards are accepted in the array keys.
+ * Convert an arbitrarily-long digit string from one numeric base
+ * to another, optionally zero-padding to a minimum column width.
*
- * Returns the matching MIME type (or wildcard) if a match, otherwise
- * NULL if no match.
+ * Supports base 2 through 36; digit values 10-36 are represented
+ * as lowercase letters a-z. Input is case-insensitive.
*
- * @param string $type
- * @param array $avail
- * @return string
- * @access private
+ * @deprecated since 1.27 Use Wikimedia\base_convert() directly
+ *
+ * @param string $input Input number
+ * @param int $sourceBase Base of the input number
+ * @param int $destBase Desired base of the output
+ * @param int $pad Minimum number of digits in the output (pad with zeroes)
+ * @param bool $lowercase Whether to output in lowercase or uppercase
+ * @param string $engine Either "gmp", "bcmath", or "php"
+ * @return string|bool The output number as a string, or false on error
*/
-function mimeTypeMatch( $type, $avail ) {
- if( array_key_exists($type, $avail) ) {
- return $type;
- } else {
- $parts = explode( '/', $type );
- if( array_key_exists( $parts[0] . '/*', $avail ) ) {
- return $parts[0] . '/*';
- } elseif( array_key_exists( '*/*', $avail ) ) {
- return '*/*';
- } else {
- return NULL;
- }
- }
+function wfBaseConvert( $input, $sourceBase, $destBase, $pad = 1,
+ $lowercase = true, $engine = 'auto'
+) {
+ return Wikimedia\base_convert( $input, $sourceBase, $destBase, $pad, $lowercase, $engine );
}
/**
- * Returns the 'best' match between a client's requested internet media types
- * and the server's list of available types. Each list should be an associative
- * array of type to preference (preference is a float between 0.0 and 1.0).
- * Wildcards in the types are acceptable.
+ * Reset the session id
*
- * @param array $cprefs Client's acceptable type list
- * @param array $sprefs Server's offered types
- * @return string
+ * @deprecated since 1.27, use MediaWiki\Session\SessionManager instead
+ * @since 1.22
+ */
+function wfResetSessionID() {
+ wfDeprecated( __FUNCTION__, '1.27' );
+ $session = SessionManager::getGlobalSession();
+ $delay = $session->delaySave();
+
+ $session->resetId();
+
+ // Make sure a session is started, since that's what the old
+ // wfResetSessionID() did.
+ if ( session_id() !== $session->getId() ) {
+ wfSetupSession( $session->getId() );
+ }
+
+ ScopedCallback::consume( $delay );
+}
+
+/**
+ * Initialise php session
*
- * @todo FIXME: doesn't handle params like 'text/plain; charset=UTF-8'
- * XXX: generalize to negotiate other stuff
+ * @deprecated since 1.27, use MediaWiki\Session\SessionManager instead.
+ * Generally, "using" SessionManager will be calling ->getSessionById() or
+ * ::getGlobalSession() (depending on whether you were passing $sessionId
+ * here), then calling $session->persist().
+ * @param bool|string $sessionId
*/
-function wfNegotiateType( $cprefs, $sprefs ) {
- $combine = array();
+function wfSetupSession( $sessionId = false ) {
+ wfDeprecated( __FUNCTION__, '1.27' );
- foreach( array_keys($sprefs) as $type ) {
- $parts = explode( '/', $type );
- if( $parts[1] != '*' ) {
- $ckey = mimeTypeMatch( $type, $cprefs );
- if( $ckey ) {
- $combine[$type] = $sprefs[$type] * $cprefs[$ckey];
- }
- }
+ if ( $sessionId ) {
+ session_id( $sessionId );
}
- foreach( array_keys( $cprefs ) as $type ) {
- $parts = explode( '/', $type );
- if( $parts[1] != '*' && !array_key_exists( $type, $sprefs ) ) {
- $skey = mimeTypeMatch( $type, $sprefs );
- if( $skey ) {
- $combine[$type] = $sprefs[$skey] * $cprefs[$type];
- }
- }
+ $session = SessionManager::getGlobalSession();
+ $session->persist();
+
+ if ( session_id() !== $session->getId() ) {
+ session_id( $session->getId() );
}
+ MediaWiki\quietCall( 'session_start' );
+}
- $bestq = 0;
- $besttype = NULL;
+/**
+ * Get an object from the precompiled serialized directory
+ *
+ * @param string $name
+ * @return mixed The variable on success, false on failure
+ */
+function wfGetPrecompiledData( $name ) {
+ global $IP;
- foreach( array_keys( $combine ) as $type ) {
- if( $combine[$type] > $bestq ) {
- $besttype = $type;
- $bestq = $combine[$type];
+ $file = "$IP/serialized/$name";
+ if ( file_exists( $file ) ) {
+ $blob = file_get_contents( $file );
+ if ( $blob ) {
+ return unserialize( $blob );
}
}
+ return false;
+}
- return $besttype;
+/**
+ * Make a cache key for the local wiki.
+ *
+ * @deprecated since 1.30 Call makeKey on a BagOStuff instance
+ * @param string $args,...
+ * @return string
+ */
+function wfMemcKey( /*...*/ ) {
+ return call_user_func_array(
+ [ ObjectCache::getLocalClusterInstance(), 'makeKey' ],
+ func_get_args()
+ );
}
/**
- * Array lookup
- * Returns an array where the values in the first array are replaced by the
- * values in the second array with the corresponding keys
- *
- * @return array
+ * Make a cache key for a foreign DB.
+ *
+ * Must match what wfMemcKey() would produce in context of the foreign wiki.
+ *
+ * @param string $db
+ * @param string $prefix
+ * @param string $args,...
+ * @return string
*/
-function wfArrayLookup( $a, $b ) {
- return array_flip( array_intersect( array_flip( $a ), array_keys( $b ) ) );
+function wfForeignMemcKey( $db, $prefix /*...*/ ) {
+ $args = array_slice( func_get_args(), 2 );
+ $keyspace = $prefix ? "$db-$prefix" : $db;
+ return call_user_func_array(
+ [ ObjectCache::getLocalClusterInstance(), 'makeKeyInternal' ],
+ [ $keyspace, $args ]
+ );
}
/**
- * Convenience function; returns MediaWiki timestamp for the present time.
+ * Make a cache key with database-agnostic prefix.
+ *
+ * Doesn't have a wiki-specific namespace. Uses a generic 'global' prefix
+ * instead. Must have a prefix as otherwise keys that use a database name
+ * in the first segment will clash with wfMemcKey/wfForeignMemcKey.
+ *
+ * @deprecated since 1.30 Call makeGlobalKey on a BagOStuff instance
+ * @since 1.26
+ * @param string $args,...
* @return string
*/
-function wfTimestampNow() {
- # return NOW
- return wfTimestamp( TS_MW, time() );
+function wfGlobalCacheKey( /*...*/ ) {
+ return call_user_func_array(
+ [ ObjectCache::getLocalClusterInstance(), 'makeGlobalKey' ],
+ func_get_args()
+ );
}
/**
- * Reference-counted warning suppression
+ * Get an ASCII string identifying this wiki
+ * This is used as a prefix in memcached keys
+ *
+ * @return string
*/
-function wfSuppressWarnings( $end = false ) {
- static $suppressCount = 0;
- static $originalLevel = false;
-
- if ( $end ) {
- if ( $suppressCount ) {
- $suppressCount --;
- if ( !$suppressCount ) {
- error_reporting( $originalLevel );
- }
- }
+function wfWikiID() {
+ global $wgDBprefix, $wgDBname;
+ if ( $wgDBprefix ) {
+ return "$wgDBname-$wgDBprefix";
} else {
- if ( !$suppressCount ) {
- $originalLevel = error_reporting( E_ALL & ~( E_WARNING | E_NOTICE ) );
- }
- $suppressCount++;
+ return $wgDBname;
}
}
/**
- * Restore error level to previous value
+ * Split a wiki ID into DB name and table prefix
+ *
+ * @param string $wiki
+ *
+ * @return array
*/
-function wfRestoreWarnings() {
- wfSuppressWarnings( true );
+function wfSplitWikiID( $wiki ) {
+ $bits = explode( '-', $wiki, 2 );
+ if ( count( $bits ) < 2 ) {
+ $bits[] = '';
+ }
+ return $bits;
}
-# Autodetect, convert and provide timestamps of various types
-
-/**
- * Unix time - the number of seconds since 1970-01-01 00:00:00 UTC
+/**
+ * Get a Database object.
+ *
+ * @param int $db Index of the connection to get. May be DB_MASTER for the
+ * master (for write queries), DB_REPLICA for potentially lagged read
+ * queries, or an integer >= 0 for a particular server.
+ *
+ * @param string|string[] $groups Query groups. An array of group names that this query
+ * belongs to. May contain a single string if the query is only
+ * in one group.
+ *
+ * @param string|bool $wiki The wiki ID, or false for the current wiki
+ *
+ * Note: multiple calls to wfGetDB(DB_REPLICA) during the course of one request
+ * will always return the same object, unless the underlying connection or load
+ * balancer is manually destroyed.
+ *
+ * Note 2: use $this->getDB() in maintenance scripts that may be invoked by
+ * updater to ensure that a proper database is being updated.
+ *
+ * @todo Replace calls to wfGetDB with calls to LoadBalancer::getConnection()
+ * on an injected instance of LoadBalancer.
+ *
+ * @return \Wikimedia\Rdbms\Database
*/
-define('TS_UNIX', 0);
+function wfGetDB( $db, $groups = [], $wiki = false ) {
+ return wfGetLB( $wiki )->getConnection( $db, $groups, $wiki );
+}
/**
- * MediaWiki concatenated string timestamp (YYYYMMDDHHMMSS)
+ * Get a load balancer object.
+ *
+ * @deprecated since 1.27, use MediaWikiServices::getDBLoadBalancer()
+ * or MediaWikiServices::getDBLoadBalancerFactory() instead.
+ *
+ * @param string|bool $wiki Wiki ID, or false for the current wiki
+ * @return \Wikimedia\Rdbms\LoadBalancer
*/
-define('TS_MW', 1);
+function wfGetLB( $wiki = false ) {
+ if ( $wiki === false ) {
+ return MediaWikiServices::getInstance()->getDBLoadBalancer();
+ } else {
+ $factory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
+ return $factory->getMainLB( $wiki );
+ }
+}
/**
- * MySQL DATETIME (YYYY-MM-DD HH:MM:SS)
+ * Get the load balancer factory object
+ *
+ * @deprecated since 1.27, use MediaWikiServices::getDBLoadBalancerFactory() instead.
+ *
+ * @return \Wikimedia\Rdbms\LBFactory
*/
-define('TS_DB', 2);
+function wfGetLBFactory() {
+ return MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
+}
/**
- * RFC 2822 format, for E-mail and HTTP headers
+ * Find a file.
+ * Shortcut for RepoGroup::singleton()->findFile()
+ *
+ * @param string $title String or Title object
+ * @param array $options Associative array of options (see RepoGroup::findFile)
+ * @return File|bool File, or false if the file does not exist
*/
-define('TS_RFC2822', 3);
+function wfFindFile( $title, $options = [] ) {
+ return RepoGroup::singleton()->findFile( $title, $options );
+}
/**
- * An Exif timestamp (YYYY:MM:DD HH:MM:SS)
+ * Get an object referring to a locally registered file.
+ * Returns a valid placeholder object if the file does not exist.
*
- * @link http://exif.org/Exif2-2.PDF The Exif 2.2 spec, see page 28 for the
- * DateTime tag and page 36 for the DateTimeOriginal and
- * DateTimeDigitized tags.
+ * @param Title|string $title
+ * @return LocalFile|null A File, or null if passed an invalid Title
*/
-define('TS_EXIF', 4);
+function wfLocalFile( $title ) {
+ return RepoGroup::singleton()->getLocalRepo()->newFile( $title );
+}
+/**
+ * Should low-performance queries be disabled?
+ *
+ * @return bool
+ * @codeCoverageIgnore
+ */
+function wfQueriesMustScale() {
+ global $wgMiserMode;
+ return $wgMiserMode
+ || ( SiteStats::pages() > 100000
+ && SiteStats::edits() > 1000000
+ && SiteStats::users() > 10000 );
+}
/**
- * @param mixed $outputtype A timestamp in one of the supported formats, the
- * function will autodetect which format is supplied
- and act accordingly.
- * @return string Time in the format specified in $outputtype
- */
-function wfTimestamp($outputtype=TS_UNIX,$ts=0) {
- $uts = 0;
- if ($ts==0) {
- $uts=time();
- } elseif (preg_match("/^(\d{4})\-(\d\d)\-(\d\d) (\d\d):(\d\d):(\d\d)$/",$ts,$da)) {
- # TS_DB
- $uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
- (int)$da[2],(int)$da[3],(int)$da[1]);
- } elseif (preg_match("/^(\d{4}):(\d\d):(\d\d) (\d\d):(\d\d):(\d\d)$/",$ts,$da)) {
- # TS_EXIF
- $uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
- (int)$da[2],(int)$da[3],(int)$da[1]);
- } elseif (preg_match("/^(\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)$/",$ts,$da)) {
- # TS_MW
- $uts=gmmktime((int)$da[4],(int)$da[5],(int)$da[6],
- (int)$da[2],(int)$da[3],(int)$da[1]);
- } elseif (preg_match("/^(\d{1,13})$/",$ts,$datearray)) {
- # TS_UNIX
- $uts=$ts;
+ * Get the path to a specified script file, respecting file
+ * extensions; this is a wrapper around $wgScriptPath etc.
+ * except for 'index' and 'load' which use $wgScript/$wgLoadScript
+ *
+ * @param string $script Script filename, sans extension
+ * @return string
+ */
+function wfScript( $script = 'index' ) {
+ global $wgScriptPath, $wgScript, $wgLoadScript;
+ if ( $script === 'index' ) {
+ return $wgScript;
+ } elseif ( $script === 'load' ) {
+ return $wgLoadScript;
} else {
- # Bogus value; fall back to the epoch...
- wfDebug("wfTimestamp() fed bogus time value: $outputtype; $ts\n");
- $uts = 0;
- }
-
-
- switch($outputtype) {
- case TS_UNIX:
- return $uts;
- case TS_MW:
- return gmdate( 'YmdHis', $uts );
- case TS_DB:
- return gmdate( 'Y-m-d H:i:s', $uts );
- // This shouldn't ever be used, but is included for completeness
- case TS_EXIF:
- return gmdate( 'Y:m:d H:i:s', $uts );
- case TS_RFC2822:
- return gmdate( 'D, d M Y H:i:s', $uts ) . ' GMT';
- default:
- wfDebugDieBacktrace( 'wfTimestamp() called with illegal output type.');
+ return "{$wgScriptPath}/{$script}.php";
}
}
/**
- * Return a formatted timestamp, or null if input is null.
- * For dealing with nullable timestamp columns in the database.
- * @param int $outputtype
- * @param string $ts
- * @return string
- */
-function wfTimestampOrNull( $outputtype = TS_UNIX, $ts = null ) {
- if( is_null( $ts ) ) {
- return null;
+ * Get the script URL.
+ *
+ * @return string Script URL
+ */
+function wfGetScriptUrl() {
+ if ( isset( $_SERVER['SCRIPT_NAME'] ) ) {
+ /* as it was called, minus the query string.
+ *
+ * Some sites use Apache rewrite rules to handle subdomains,
+ * and have PHP set up in a weird way that causes PHP_SELF
+ * to contain the rewritten URL instead of the one that the
+ * outside world sees.
+ *
+ * If in this mode, use SCRIPT_URL instead, which mod_rewrite
+ * provides containing the "before" URL.
+ */
+ return $_SERVER['SCRIPT_NAME'];
} else {
- return wfTimestamp( $outputtype, $ts );
+ return $_SERVER['URL'];
}
}
/**
- * Check where as the operating system is Windows
+ * Convenience function converts boolean values into "true"
+ * or "false" (string) values
*
- * @return bool True if it's windows, False otherwise.
+ * @param bool $value
+ * @return string
*/
-function wfIsWindows() {
- if (substr(php_uname(), 0, 7) == 'Windows') {
- return true;
- } else {
- return false;
- }
-}
+function wfBoolToStr( $value ) {
+ return $value ? 'true' : 'false';
+}
/**
- * Swap two variables
+ * Get a platform-independent path to the null file, e.g. /dev/null
+ *
+ * @return string
*/
-function swap( &$x, &$y ) {
- $z = $x;
- $x = $y;
- $y = $z;
+function wfGetNull() {
+ return wfIsWindows() ? 'NUL' : '/dev/null';
}
-function wfGetSiteNotice() {
- global $wgSiteNotice, $wgTitle, $wgOut;
- $fname = 'wfGetSiteNotice';
- wfProfileIn( $fname );
-
- $notice = wfMsg( 'sitenotice' );
- if( $notice == '<sitenotice>' || $notice == '-' ) {
- $notice = '';
+/**
+ * Waits for the replica DBs to catch up to the master position
+ *
+ * Use this when updating very large numbers of rows, as in maintenance scripts,
+ * to avoid causing too much lag. Of course, this is a no-op if there are no replica DBs.
+ *
+ * By default this waits on the main DB cluster of the current wiki.
+ * If $cluster is set to "*" it will wait on all DB clusters, including
+ * external ones. If the lag being waiting on is caused by the code that
+ * does this check, it makes since to use $ifWritesSince, particularly if
+ * cluster is "*", to avoid excess overhead.
+ *
+ * Never call this function after a big DB write that is still in a transaction.
+ * This only makes sense after the possible lag inducing changes were committed.
+ *
+ * @param float|null $ifWritesSince Only wait if writes were done since this UNIX timestamp
+ * @param string|bool $wiki Wiki identifier accepted by wfGetLB
+ * @param string|bool $cluster Cluster name accepted by LBFactory. Default: false.
+ * @param int|null $timeout Max wait time. Default: 1 day (cli), ~10 seconds (web)
+ * @return bool Success (able to connect and no timeouts reached)
+ * @deprecated since 1.27 Use LBFactory::waitForReplication
+ */
+function wfWaitForSlaves(
+ $ifWritesSince = null, $wiki = false, $cluster = false, $timeout = null
+) {
+ if ( $timeout === null ) {
+ $timeout = ( PHP_SAPI === 'cli' ) ? 86400 : 10;
}
- if( $notice == '' ) {
- # We may also need to override a message with eg downtime info
- # FIXME: make this work!
- $notice = $wgSiteNotice;
+
+ if ( $cluster === '*' ) {
+ $cluster = false;
+ $wiki = false;
+ } elseif ( $wiki === false ) {
+ $wiki = wfWikiID();
}
- if($notice != '-' && $notice != '') {
- $specialparser = new Parser();
- $parserOutput = $specialparser->parse( $notice, $wgTitle, $wgOut->mParserOptions, false );
- $notice = $parserOutput->getText();
+
+ try {
+ wfGetLBFactory()->waitForReplication( [
+ 'wiki' => $wiki,
+ 'cluster' => $cluster,
+ 'timeout' => $timeout,
+ // B/C: first argument used to be "max seconds of lag"; ignore such values
+ 'ifWritesSince' => ( $ifWritesSince > 1e9 ) ? $ifWritesSince : null
+ ] );
+ } catch ( DBReplicationWaitError $e ) {
+ return false;
}
- wfProfileOut( $fname );
- return $notice;
+
+ return true;
}
/**
- * Format an XML element with given attributes and, optionally, text content.
- * Element and attribute names are assumed to be ready for literal inclusion.
- * Strings are assumed to not contain XML-illegal characters; special
- * characters (<, >, &) are escaped but illegals are not touched.
+ * Count down from $seconds to zero on the terminal, with a one-second pause
+ * between showing each number. For use in command-line scripts.
*
- * @param string $element
- * @param array $attribs Name=>value pairs. Values will be escaped.
- * @param string $contents NULL to make an open tag only; '' for a contentless closed tag (default)
- * @return string
+ * @codeCoverageIgnore
+ * @param int $seconds
*/
-function wfElement( $element, $attribs = null, $contents = '') {
- $out = '<' . $element;
- if( !is_null( $attribs ) ) {
- foreach( $attribs as $name => $val ) {
- $out .= ' ' . $name . '="' . htmlspecialchars( $val ) . '"';
+function wfCountDown( $seconds ) {
+ for ( $i = $seconds; $i >= 0; $i-- ) {
+ if ( $i != $seconds ) {
+ echo str_repeat( "\x08", strlen( $i + 1 ) );
}
- }
- if( is_null( $contents ) ) {
- $out .= '>';
- } else {
- if( $contents == '' ) {
- $out .= ' />';
- } else {
- $out .= '>';
- $out .= htmlspecialchars( $contents );
- $out .= "</$element>";
+ echo $i;
+ flush();
+ if ( $i ) {
+ sleep( 1 );
}
}
- return $out;
+ echo "\n";
}
/**
- * Format an XML element as with wfElement(), but run text through the
- * UtfNormal::cleanUp() validator first to ensure that no invalid UTF-8
- * is passed.
+ * Replace all invalid characters with '-'.
+ * Additional characters can be defined in $wgIllegalFileChars (see T22489).
+ * By default, $wgIllegalFileChars includes ':', '/', '\'.
*
- * @param string $element
- * @param array $attribs Name=>value pairs. Values will be escaped.
- * @param string $contents NULL to make an open tag only; '' for a contentless closed tag (default)
+ * @param string $name Filename to process
* @return string
*/
-function wfElementClean( $element, $attribs = array(), $contents = '') {
- if( $attribs ) {
- $attribs = array_map( array( 'UtfNormal', 'cleanUp' ), $attribs );
+function wfStripIllegalFilenameChars( $name ) {
+ global $wgIllegalFileChars;
+ $illegalFileChars = $wgIllegalFileChars ? "|[" . $wgIllegalFileChars . "]" : '';
+ $name = preg_replace(
+ "/[^" . Title::legalChars() . "]" . $illegalFileChars . "/",
+ '-',
+ $name
+ );
+ // $wgIllegalFileChars may not include '/' and '\', so we still need to do this
+ $name = wfBaseName( $name );
+ return $name;
+}
+
+/**
+ * Set PHP's memory limit to the larger of php.ini or $wgMemoryLimit
+ *
+ * @return int Resulting value of the memory limit.
+ */
+function wfMemoryLimit() {
+ global $wgMemoryLimit;
+ $memlimit = wfShorthandToInteger( ini_get( 'memory_limit' ) );
+ if ( $memlimit != -1 ) {
+ $conflimit = wfShorthandToInteger( $wgMemoryLimit );
+ if ( $conflimit == -1 ) {
+ wfDebug( "Removing PHP's memory limit\n" );
+ MediaWiki\suppressWarnings();
+ ini_set( 'memory_limit', $conflimit );
+ MediaWiki\restoreWarnings();
+ return $conflimit;
+ } elseif ( $conflimit > $memlimit ) {
+ wfDebug( "Raising PHP's memory limit to $conflimit bytes\n" );
+ MediaWiki\suppressWarnings();
+ ini_set( 'memory_limit', $conflimit );
+ MediaWiki\restoreWarnings();
+ return $conflimit;
+ }
}
- if( $contents ) {
- $contents = UtfNormal::cleanUp( $contents );
+ return $memlimit;
+}
+
+/**
+ * Set PHP's time limit to the larger of php.ini or $wgTransactionalTimeLimit
+ *
+ * @return int Prior time limit
+ * @since 1.26
+ */
+function wfTransactionalTimeLimit() {
+ global $wgTransactionalTimeLimit;
+
+ $timeLimit = ini_get( 'max_execution_time' );
+ // Note that CLI scripts use 0
+ if ( $timeLimit > 0 && $wgTransactionalTimeLimit > $timeLimit ) {
+ set_time_limit( $wgTransactionalTimeLimit );
}
- return wfElement( $element, $attribs, $contents );
+
+ ignore_user_abort( true ); // ignore client disconnects
+
+ return $timeLimit;
}
/**
- * Create a namespace selector
+ * Converts shorthand byte notation to integer form
*
- * @param mixed $selected The namespace which should be selected, default ''
- * @param string $allnamespaces Value of a special item denoting all namespaces. Null to not include (default)
- * @return Html string containing the namespace selector
+ * @param string $string
+ * @param int $default Returned if $string is empty
+ * @return int
*/
-function &HTMLnamespaceselector($selected = '', $allnamespaces = null) {
- global $wgContLang;
- $s = "<select name='namespace' class='namespaceselector'>\n";
- $arr = $wgContLang->getFormattedNamespaces();
- if( !is_null($allnamespaces) ) {
- $arr = array($allnamespaces => wfMsgHtml('namespacesall')) + $arr;
+function wfShorthandToInteger( $string = '', $default = -1 ) {
+ $string = trim( $string );
+ if ( $string === '' ) {
+ return $default;
+ }
+ $last = $string[strlen( $string ) - 1];
+ $val = intval( $string );
+ switch ( $last ) {
+ case 'g':
+ case 'G':
+ $val *= 1024;
+ // break intentionally missing
+ case 'm':
+ case 'M':
+ $val *= 1024;
+ // break intentionally missing
+ case 'k':
+ case 'K':
+ $val *= 1024;
}
- foreach ($arr as $index => $name) {
- if ($index < NS_MAIN) continue;
- $name = $index !== 0 ? $name : wfMsgHtml('blanknamespace');
+ return $val;
+}
- if ($index === $selected) {
- $s .= wfElement("option",
- array("value" => $index, "selected" => "selected"),
- $name);
+/**
+ * Get the normalised IETF language tag
+ * See unit test for examples.
+ * See mediawiki.language.bcp47 for the JavaScript implementation.
+ *
+ * @param string $code The language code.
+ * @return string The language code which complying with BCP 47 standards.
+ */
+function wfBCP47( $code ) {
+ $codeSegment = explode( '-', $code );
+ $codeBCP = [];
+ foreach ( $codeSegment as $segNo => $seg ) {
+ // when previous segment is x, it is a private segment and should be lc
+ if ( $segNo > 0 && strtolower( $codeSegment[( $segNo - 1 )] ) == 'x' ) {
+ $codeBCP[$segNo] = strtolower( $seg );
+ // ISO 3166 country code
+ } elseif ( ( strlen( $seg ) == 2 ) && ( $segNo > 0 ) ) {
+ $codeBCP[$segNo] = strtoupper( $seg );
+ // ISO 15924 script code
+ } elseif ( ( strlen( $seg ) == 4 ) && ( $segNo > 0 ) ) {
+ $codeBCP[$segNo] = ucfirst( strtolower( $seg ) );
+ // Use lowercase for other cases
} else {
- $s .= wfElement("option", array("value" => $index), $name);
+ $codeBCP[$segNo] = strtolower( $seg );
}
}
- $s .= "</select>\n";
- return $s;
+ $langCode = implode( '-', $codeBCP );
+ return $langCode;
}
-/** Global singleton instance of MimeMagic. This is initialized on demand,
-* please always use the wfGetMimeMagic() function to get the instance.
-*
-* @private
-*/
-$wgMimeMagic= NULL;
+/**
+ * Get a specific cache object.
+ *
+ * @param int|string $cacheType A CACHE_* constants, or other key in $wgObjectCaches
+ * @return BagOStuff
+ */
+function wfGetCache( $cacheType ) {
+ return ObjectCache::getInstance( $cacheType );
+}
-/** Factory functions for the global MimeMagic object.
-* This function always returns the same singleton instance of MimeMagic.
-* That objects will be instantiated on the first call to this function.
-* If needed, the MimeMagic.php file is automatically included by this function.
-* @return MimeMagic the global MimeMagic objects.
-*/
-function &wfGetMimeMagic() {
- global $wgMimeMagic;
-
- if (!is_null($wgMimeMagic)) {
- return $wgMimeMagic;
- }
+/**
+ * Get the main cache object
+ *
+ * @return BagOStuff
+ */
+function wfGetMainCache() {
+ global $wgMainCacheType;
+ return ObjectCache::getInstance( $wgMainCacheType );
+}
- if (!class_exists("MimeMagic")) {
- #include on demand
- require_once("MimeMagic.php");
- }
-
- $wgMimeMagic= new MimeMagic();
-
- return $wgMimeMagic;
+/**
+ * Get the cache object used by the message cache
+ *
+ * @return BagOStuff
+ */
+function wfGetMessageCacheStorage() {
+ global $wgMessageCacheType;
+ return ObjectCache::getInstance( $wgMessageCacheType );
}
+/**
+ * Get the cache object used by the parser cache
+ *
+ * @deprecated since 1.30, use MediaWikiServices::getParserCache()->getCacheStorage()
+ * @return BagOStuff
+ */
+function wfGetParserCacheStorage() {
+ global $wgParserCacheType;
+ return ObjectCache::getInstance( $wgParserCacheType );
+}
/**
- * Tries to get the system directory for temporary files.
- * The TMPDIR, TMP, and TEMP environment variables are checked in sequence,
- * and if none are set /tmp is returned as the generic Unix default.
+ * Call hook functions defined in $wgHooks
*
- * NOTE: When possible, use the tempfile() function to create temporary
- * files to avoid race conditions on file creation, etc.
+ * @param string $event Event name
+ * @param array $args Parameters passed to hook functions
+ * @param string|null $deprecatedVersion Optionally mark hook as deprecated with version number
*
- * @return string
+ * @return bool True if no handler aborted the hook
+ * @deprecated since 1.25 - use Hooks::run
*/
-function wfTempDir() {
- foreach( array( 'TMPDIR', 'TMP', 'TEMP' ) as $var ) {
- $tmp = getenv( $var );
- if( $tmp && file_exists( $tmp ) && is_dir( $tmp ) && is_writable( $tmp ) ) {
- return $tmp;
+function wfRunHooks( $event, array $args = [], $deprecatedVersion = null ) {
+ return Hooks::run( $event, $args, $deprecatedVersion );
+}
+
+/**
+ * Wrapper around php's unpack.
+ *
+ * @param string $format The format string (See php's docs)
+ * @param string $data A binary string of binary data
+ * @param int|bool $length The minimum length of $data or false. This is to
+ * prevent reading beyond the end of $data. false to disable the check.
+ *
+ * Also be careful when using this function to read unsigned 32 bit integer
+ * because php might make it negative.
+ *
+ * @throws MWException If $data not long enough, or if unpack fails
+ * @return array Associative array of the extracted data
+ */
+function wfUnpack( $format, $data, $length = false ) {
+ if ( $length !== false ) {
+ $realLen = strlen( $data );
+ if ( $realLen < $length ) {
+ throw new MWException( "Tried to use wfUnpack on a "
+ . "string of length $realLen, but needed one "
+ . "of at least length $length."
+ );
}
}
- # Hope this is Unix of some kind!
- return '/tmp';
+
+ MediaWiki\suppressWarnings();
+ $result = unpack( $format, $data );
+ MediaWiki\restoreWarnings();
+
+ if ( $result === false ) {
+ // If it cannot extract the packed data.
+ throw new MWException( "unpack could not unpack binary data" );
+ }
+ return $result;
}
/**
- * Make directory, and make all parent directories if they don't exist
+ * Determine if an image exists on the 'bad image list'.
+ *
+ * The format of MediaWiki:Bad_image_list is as follows:
+ * * Only list items (lines starting with "*") are considered
+ * * The first link on a line must be a link to a bad image
+ * * Any subsequent links on the same line are considered to be exceptions,
+ * i.e. articles where the image may occur inline.
+ *
+ * @param string $name The image name to check
+ * @param Title|bool $contextTitle The page on which the image occurs, if known
+ * @param string $blacklist Wikitext of a file blacklist
+ * @return bool
*/
-function wfMkdirParents( $fullDir, $mode ) {
- $parts = explode( '/', $fullDir );
- $path = '';
- $success = false;
- foreach ( $parts as $dir ) {
- $path .= $dir . '/';
- if ( !is_dir( $path ) ) {
- if ( !mkdir( $path, $mode ) ) {
- return false;
+function wfIsBadImage( $name, $contextTitle = false, $blacklist = null ) {
+ # Handle redirects; callers almost always hit wfFindFile() anyway,
+ # so just use that method because it has a fast process cache.
+ $file = wfFindFile( $name ); // get the final name
+ $name = $file ? $file->getTitle()->getDBkey() : $name;
+
+ # Run the extension hook
+ $bad = false;
+ if ( !Hooks::run( 'BadImage', [ $name, &$bad ] ) ) {
+ return (bool)$bad;
+ }
+
+ $cache = ObjectCache::getLocalServerInstance( 'hash' );
+ $key = $cache->makeKey(
+ 'bad-image-list', ( $blacklist === null ) ? 'default' : md5( $blacklist )
+ );
+ $badImages = $cache->get( $key );
+
+ if ( $badImages === false ) { // cache miss
+ if ( $blacklist === null ) {
+ $blacklist = wfMessage( 'bad_image_list' )->inContentLanguage()->plain(); // site list
+ }
+ # Build the list now
+ $badImages = [];
+ $lines = explode( "\n", $blacklist );
+ foreach ( $lines as $line ) {
+ # List items only
+ if ( substr( $line, 0, 1 ) !== '*' ) {
+ continue;
+ }
+
+ # Find all links
+ $m = [];
+ if ( !preg_match_all( '/\[\[:?(.*?)\]\]/', $line, $m ) ) {
+ continue;
+ }
+
+ $exceptions = [];
+ $imageDBkey = false;
+ foreach ( $m[1] as $i => $titleText ) {
+ $title = Title::newFromText( $titleText );
+ if ( !is_null( $title ) ) {
+ if ( $i == 0 ) {
+ $imageDBkey = $title->getDBkey();
+ } else {
+ $exceptions[$title->getPrefixedDBkey()] = true;
+ }
+ }
+ }
+
+ if ( $imageDBkey !== false ) {
+ $badImages[$imageDBkey] = $exceptions;
}
}
+ $cache->set( $key, $badImages, 60 );
}
- return true;
+
+ $contextKey = $contextTitle ? $contextTitle->getPrefixedDBkey() : false;
+ $bad = isset( $badImages[$name] ) && !isset( $badImages[$name][$contextKey] );
+
+ return $bad;
}
/**
- * Increment a statistics counter
+ * Determine whether the client at a given source IP is likely to be able to
+ * access the wiki via HTTPS.
+ *
+ * @param string $ip The IPv4/6 address in the normal human-readable form
+ * @return bool
*/
-function wfIncrStats( $key ) {
- global $wgDBname, $wgMemc;
- $key = "$wgDBname:stats:$key";
- if ( is_null( $wgMemc->incr( $key ) ) ) {
- $wgMemc->add( $key, 1 );
- }
+function wfCanIPUseHTTPS( $ip ) {
+ $canDo = true;
+ Hooks::run( 'CanIPUseHTTPS', [ $ip, &$canDo ] );
+ return !!$canDo;
}
/**
- * @param mixed $nr The number to format
- * @param int $acc The number of digits after the decimal point, default 2
- * @param bool $round Whether or not to round the value, default true
- * @return float
+ * Determine input string is represents as infinity
+ *
+ * @param string $str The string to determine
+ * @return bool
+ * @since 1.25
*/
-function wfPercent( $nr, $acc = 2, $round = true ) {
- $ret = sprintf( "%.${acc}f", $nr );
- return $round ? round( $ret, $acc ) . '%' : "$ret%";
+function wfIsInfinity( $str ) {
+ // These are hardcoded elsewhere in MediaWiki (e.g. mediawiki.special.block.js).
+ $infinityValues = [ 'infinite', 'indefinite', 'infinity', 'never' ];
+ return in_array( $str, $infinityValues );
}
/**
- * Encrypt a username/password.
+ * Returns true if these thumbnail parameters match one that MediaWiki
+ * requests from file description pages and/or parser output.
+ *
+ * $params is considered non-standard if they involve a non-standard
+ * width or any non-default parameters aside from width and page number.
+ * The number of possible files with standard parameters is far less than
+ * that of all combinations; rate-limiting for them can thus be more generious.
*
- * @param string $userid ID of the user
- * @param string $password Password of the user
- * @return string Hashed password
+ * @param File $file
+ * @param array $params
+ * @return bool
+ * @since 1.24 Moved from thumb.php to GlobalFunctions in 1.25
*/
-function wfEncryptPassword( $userid, $password ) {
- global $wgPasswordSalt;
- $p = md5( $password);
+function wfThumbIsStandard( File $file, array $params ) {
+ global $wgThumbLimits, $wgImageLimits, $wgResponsiveImages;
- if($wgPasswordSalt)
- return md5( "{$userid}-{$p}" );
- else
- return $p;
-}
+ $multipliers = [ 1 ];
+ if ( $wgResponsiveImages ) {
+ // These available sizes are hardcoded currently elsewhere in MediaWiki.
+ // @see Linker::processResponsiveImages
+ $multipliers[] = 1.5;
+ $multipliers[] = 2;
+ }
-/**
- * Appends to second array if $value differs from that in $default
- */
-function wfAppendToArrayIfNotDefault( $key, $value, $default, &$changed ) {
- if ( is_null( $changed ) ) {
- wfDebugDieBacktrace('GlobalFunctions::wfAppendToArrayIfNotDefault got null');
+ $handler = $file->getHandler();
+ if ( !$handler || !isset( $params['width'] ) ) {
+ return false;
}
- if ( $default[$key] !== $value ) {
- $changed[$key] = $value;
+
+ $basicParams = [];
+ if ( isset( $params['page'] ) ) {
+ $basicParams['page'] = $params['page'];
+ }
+
+ $thumbLimits = [];
+ $imageLimits = [];
+ // Expand limits to account for multipliers
+ foreach ( $multipliers as $multiplier ) {
+ $thumbLimits = array_merge( $thumbLimits, array_map(
+ function ( $width ) use ( $multiplier ) {
+ return round( $width * $multiplier );
+ }, $wgThumbLimits )
+ );
+ $imageLimits = array_merge( $imageLimits, array_map(
+ function ( $pair ) use ( $multiplier ) {
+ return [
+ round( $pair[0] * $multiplier ),
+ round( $pair[1] * $multiplier ),
+ ];
+ }, $wgImageLimits )
+ );
+ }
+
+ // Check if the width matches one of $wgThumbLimits
+ if ( in_array( $params['width'], $thumbLimits ) ) {
+ $normalParams = $basicParams + [ 'width' => $params['width'] ];
+ // Append any default values to the map (e.g. "lossy", "lossless", ...)
+ $handler->normaliseParams( $file, $normalParams );
+ } else {
+ // If not, then check if the width matchs one of $wgImageLimits
+ $match = false;
+ foreach ( $imageLimits as $pair ) {
+ $normalParams = $basicParams + [ 'width' => $pair[0], 'height' => $pair[1] ];
+ // Decide whether the thumbnail should be scaled on width or height.
+ // Also append any default values to the map (e.g. "lossy", "lossless", ...)
+ $handler->normaliseParams( $file, $normalParams );
+ // Check if this standard thumbnail size maps to the given width
+ if ( $normalParams['width'] == $params['width'] ) {
+ $match = true;
+ break;
+ }
+ }
+ if ( !$match ) {
+ return false; // not standard for description pages
+ }
+ }
+
+ // Check that the given values for non-page, non-width, params are just defaults
+ foreach ( $params as $key => $value ) {
+ if ( !isset( $normalParams[$key] ) || $normalParams[$key] != $value ) {
+ return false;
+ }
}
+
+ return true;
}
/**
- * Since wfMsg() and co suck, they don't return false if the message key they
- * looked up didn't exist but a XHTML string, this function checks for the
- * nonexistance of messages by looking at wfMsg() output
+ * Merges two (possibly) 2 dimensional arrays into the target array ($baseArray).
*
- * @param $msg The message key looked up
- * @param $wfMsgOut The output of wfMsg*()
- * @return bool
- */
-function wfNoMsg( $msg, $wfMsgOut ) {
- return $wfMsgOut === "<$msg>";
+ * Values that exist in both values will be combined with += (all values of the array
+ * of $newValues will be added to the values of the array of $baseArray, while values,
+ * that exists in both, the value of $baseArray will be used).
+ *
+ * @param array $baseArray The array where you want to add the values of $newValues to
+ * @param array $newValues An array with new values
+ * @return array The combined array
+ * @since 1.26
+ */
+function wfArrayPlus2d( array $baseArray, array $newValues ) {
+ // First merge items that are in both arrays
+ foreach ( $baseArray as $name => &$groupVal ) {
+ if ( isset( $newValues[$name] ) ) {
+ $groupVal += $newValues[$name];
+ }
+ }
+ // Now add items that didn't exist yet
+ $baseArray += $newValues;
+
+ return $baseArray;
}
-?>
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff