X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/16b9f61a8ab25bd6c9fbfd0cea00c7bda22f6a71..refs/tags/wordpress-4.4.1:/wp-includes/functions.php diff --git a/wp-includes/functions.php b/wp-includes/functions.php index c4a481be..b3781639 100644 --- a/wp-includes/functions.php +++ b/wp-includes/functions.php @@ -5,42 +5,40 @@ * @package WordPress */ +require( ABSPATH . WPINC . '/option.php' ); + /** - * Converts MySQL DATETIME field to user specified date format. + * Convert given date string into a different format. * - * If $dateformatstring has 'G' value, then gmmktime() function will be used to - * make the time. If $dateformatstring is set to 'U', then mktime() function - * will be used to make the time. + * $format should be either a PHP date format string, e.g. 'U' for a Unix + * timestamp, or 'G' for a Unix timestamp assuming that $date is GMT. * - * The $translate will only be used, if it is set to true and it is by default - * and if the $wp_locale object has the month and weekday set. + * If $translate is true then the given date and format string will + * be passed to date_i18n() for translation. * * @since 0.71 * - * @param string $dateformatstring Either 'G', 'U', or php date format. - * @param string $mysqlstring Time from mysql DATETIME field. - * @param bool $translate Optional. Default is true. Will switch format to locale. - * @return string Date formated by $dateformatstring or locale (if available). + * @param string $format Format of the date to return. + * @param string $date Date string to convert. + * @param bool $translate Whether the return date should be translated. Default true. + * @return string|int|bool Formatted date string or Unix timestamp. False if $date is empty. */ -function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) { - global $wp_locale; - $m = $mysqlstring; - if ( empty( $m ) ) +function mysql2date( $format, $date, $translate = true ) { + if ( empty( $date ) ) return false; - if( 'G' == $dateformatstring ) { - return strtotime( $m . ' +0000' ); - } + if ( 'G' == $format ) + return strtotime( $date . ' +0000' ); - $i = strtotime( $m ); + $i = strtotime( $date ); - if( 'U' == $dateformatstring ) + if ( 'U' == $format ) return $i; - if ( $translate) - return date_i18n( $dateformatstring, $i ); + if ( $translate ) + return date_i18n( $format, $i ); else - return date( $dateformatstring, $i ); + return date( $format, $i ); } /** @@ -48,24 +46,26 @@ function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) { * * The 'mysql' type will return the time in the format for MySQL DATETIME field. * The 'timestamp' type will return the current timestamp. + * Other strings will be interpreted as PHP date formats (e.g. 'Y-m-d'). * * If $gmt is set to either '1' or 'true', then both types will use GMT time. * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option. * * @since 1.0.0 * - * @param string $type Either 'mysql' or 'timestamp'. - * @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false. - * @return int|string String if $type is 'gmt', int if $type is 'timestamp'. + * @param string $type Type of time to retrieve. Accepts 'mysql', 'timestamp', or PHP date + * format string (e.g. 'Y-m-d'). + * @param int|bool $gmt Optional. Whether to use GMT timezone. Default false. + * @return int|string Integer if $type is 'timestamp', string otherwise. */ function current_time( $type, $gmt = 0 ) { switch ( $type ) { case 'mysql': - return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) ); - break; + return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) ) ); case 'timestamp': - return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 ); - break; + return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ); + default: + return ( $gmt ) ? date( $type ) : date( $type, time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) ); } } @@ -78,16 +78,19 @@ function current_time( $type, $gmt = 0 ) { * * @since 0.71 * - * @param string $dateformatstring Format to display the date. - * @param int $unixtimestamp Optional. Unix timestamp. - * @param bool $gmt Optional, default is false. Whether to convert to GMT for time. + * @global WP_Locale $wp_locale + * + * @param string $dateformatstring Format to display the date. + * @param bool|int $unixtimestamp Optional. Unix timestamp. Default false. + * @param bool $gmt Optional. Whether to use GMT timezone. Default false. + * * @return string The date, translated if locale specifies it. */ function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) { global $wp_locale; $i = $unixtimestamp; - // Sanity check for PHP 5.1.0- - if ( false === $i || intval($i) < 0 ) { + + if ( false === $i ) { if ( ! $gmt ) $i = current_time( 'timestamp' ); else @@ -97,8 +100,10 @@ function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) { $gmt = true; } - // store original value for language with untypical grammars - // see http://core.trac.wordpress.org/ticket/9396 + /* + * Store original value for language with untypical grammars. + * See https://core.trac.wordpress.org/ticket/9396 + */ $req_format = $dateformatstring; $datefunc = $gmt? 'gmdate' : 'date'; @@ -120,36 +125,119 @@ function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) { $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 ); } + $timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' ); + $timezone_formats_re = implode( '|', $timezone_formats ); + if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) ) { + $timezone_string = get_option( 'timezone_string' ); + if ( $timezone_string ) { + $timezone_object = timezone_open( $timezone_string ); + $date_object = date_create( null, $timezone_object ); + foreach ( $timezone_formats as $timezone_format ) { + if ( false !== strpos( $dateformatstring, $timezone_format ) ) { + $formatted = date_format( $date_object, $timezone_format ); + $dateformatstring = ' '.$dateformatstring; + $dateformatstring = preg_replace( "/([^\\\])$timezone_format/", "\\1" . backslashit( $formatted ), $dateformatstring ); + $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 ); + } + } + } + } $j = @$datefunc( $dateformatstring, $i ); - // allow plugins to redo this entirely for languages with untypical grammars - $j = apply_filters('date_i18n', $j, $req_format, $i, $gmt); + + /** + * Filter the date formatted based on the locale. + * + * @since 2.8.0 + * + * @param string $j Formatted date string. + * @param string $req_format Format to display the date. + * @param int $i Unix timestamp. + * @param bool $gmt Whether to convert to GMT for time. Default false. + */ + $j = apply_filters( 'date_i18n', $j, $req_format, $i, $gmt ); return $j; } /** - * Convert number to format based on the locale. + * Determines if the date should be declined. + * + * If the locale specifies that month names require a genitive case in certain + * formats (like 'j F Y'), the month name will be replaced with a correct form. + * + * @since 4.4.0 + * + * @param string $date Formatted date string. + * @return string The date, declined if locale specifies it. + */ +function wp_maybe_decline_date( $date ) { + global $wp_locale; + + // i18n functions are not available in SHORTINIT mode + if ( ! function_exists( '_x' ) ) { + return $date; + } + + /* translators: If months in your language require a genitive case, + * translate this to 'on'. Do not translate into your own language. + */ + if ( 'on' === _x( 'off', 'decline months names: on or off' ) ) { + // Match a format like 'j F Y' or 'j. F' + if ( @preg_match( '#^\d{1,2}\.? \w+#u', $date ) ) { + $months = $wp_locale->month; + + foreach ( $months as $key => $month ) { + $months[ $key ] = '#' . $month . '#'; + } + + $date = preg_replace( $months, $wp_locale->month_genitive, $date ); + } + } + + // Used for locale-specific rules + $locale = get_locale(); + + if ( 'ca' === $locale ) { + // " de abril| de agost| de octubre..." -> " d'abril| d'agost| d'octubre..." + $date = preg_replace( '# de ([ao])#i', " d'\\1", $date ); + } + + return $date; +} + +/** + * Convert integer number to format based on the locale. * * @since 2.3.0 * - * @param mixed $number The number to convert based on locale. - * @param int $decimals Precision of the number of decimal places. + * @global WP_Locale $wp_locale + * + * @param int $number The number to convert based on locale. + * @param int $decimals Optional. Precision of the number of decimal places. Default 0. * @return string Converted number in string format. */ -function number_format_i18n( $number, $decimals = null ) { +function number_format_i18n( $number, $decimals = 0 ) { global $wp_locale; - // let the user override the precision only - $decimals = ( is_null( $decimals ) ) ? $wp_locale->number_format['decimals'] : intval( $decimals ); - $num = number_format( $number, $decimals, $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); + if ( isset( $wp_locale ) ) { + $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); + } else { + $formatted = number_format( $number, absint( $decimals ) ); + } - // let the user translate digits from latin to localized language - return apply_filters( 'number_format_i18n', $num ); + /** + * Filter the number formatted based on the locale. + * + * @since 2.8.0 + * + * @param string $formatted Converted number in string format. + */ + return apply_filters( 'number_format_i18n', $formatted ); } /** * Convert number of bytes largest unit bytes will fit into. * - * It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts + * It is easier to read 1 kB than 1024 bytes and 1 MB than 1048576 bytes. Converts * number of bytes to human readable number by taking the number of that unit * that the bytes will go into it. Supports TB value. * @@ -159,64 +247,68 @@ function number_format_i18n( $number, $decimals = null ) { * be converted to a double, which should always have 64 bit length. * * Technically the correct unit names for powers of 1024 are KiB, MiB etc. - * @link http://en.wikipedia.org/wiki/Byte * * @since 2.3.0 * - * @param int|string $bytes Number of bytes. Note max integer size for integers. - * @param int $decimals Precision of number of decimal places. - * @return bool|string False on failure. Number string on success. + * @param int|string $bytes Number of bytes. Note max integer size for integers. + * @param int $decimals Optional. Precision of number of decimal places. Default 0. + * @return string|false False on failure. Number string on success. */ -function size_format( $bytes, $decimals = null ) { +function size_format( $bytes, $decimals = 0 ) { $quant = array( - // ========================= Origin ==== - 'TB' => 1099511627776, // pow( 1024, 4) - 'GB' => 1073741824, // pow( 1024, 3) - 'MB' => 1048576, // pow( 1024, 2) - 'kB' => 1024, // pow( 1024, 1) - 'B ' => 1, // pow( 1024, 0) + 'TB' => TB_IN_BYTES, + 'GB' => GB_IN_BYTES, + 'MB' => MB_IN_BYTES, + 'kB' => KB_IN_BYTES, + 'B' => 1, ); - foreach ( $quant as $unit => $mag ) - if ( doubleval($bytes) >= $mag ) + foreach ( $quant as $unit => $mag ) { + if ( doubleval( $bytes ) >= $mag ) { return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit; + } + } return false; } /** - * Get the week start and end from the datetime or date string from mysql. + * Get the week start and end from the datetime or date string from MySQL. * * @since 0.71 * - * @param string $mysqlstring Date or datetime field type from mysql. - * @param int $start_of_week Optional. Start of the week as an integer. + * @param string $mysqlstring Date or datetime field type from MySQL. + * @param int|string $start_of_week Optional. Start of the week as an integer. Default empty string. * @return array Keys are 'start' and 'end'. */ function get_weekstartend( $mysqlstring, $start_of_week = '' ) { - $my = substr( $mysqlstring, 0, 4 ); // Mysql string Year - $mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month - $md = substr( $mysqlstring, 5, 2 ); // Mysql string day - $day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day. - $weekday = date( 'w', $day ); // The day of the week from the timestamp - $i = 86400; // One day - if( !is_numeric($start_of_week) ) + // MySQL string year. + $my = substr( $mysqlstring, 0, 4 ); + + // MySQL string month. + $mm = substr( $mysqlstring, 8, 2 ); + + // MySQL string day. + $md = substr( $mysqlstring, 5, 2 ); + + // The timestamp for MySQL string day. + $day = mktime( 0, 0, 0, $md, $mm, $my ); + + // The day of the week from the timestamp. + $weekday = date( 'w', $day ); + + if ( !is_numeric($start_of_week) ) $start_of_week = get_option( 'start_of_week' ); if ( $weekday < $start_of_week ) - $weekday = 7 - $start_of_week - $weekday; + $weekday += 7; - while ( $weekday > $start_of_week ) { - $weekday = date( 'w', $day ); - if ( $weekday < $start_of_week ) - $weekday = 7 - $start_of_week - $weekday; + // The most recent week start day on or before $day. + $start = $day - DAY_IN_SECONDS * ( $weekday - $start_of_week ); - $day -= 86400; - $i = 0; - } - $week['start'] = $day + 86400 - $i; - $week['end'] = $week['start'] + 604799; - return $week; + // $start + 1 week - 1 second. + $end = $start + WEEK_IN_SECONDS - 1; + return compact( 'start', 'end' ); } /** @@ -241,31 +333,61 @@ function maybe_unserialize( $original ) { * * @since 2.0.5 * - * @param mixed $data Value to check to see if was serialized. + * @param string $data Value to check to see if was serialized. + * @param bool $strict Optional. Whether to be strict about the end of the string. Default true. * @return bool False if not serialized and true if it was. */ -function is_serialized( $data ) { - // if it isn't a string, it isn't serialized - if ( !is_string( $data ) ) +function is_serialized( $data, $strict = true ) { + // if it isn't a string, it isn't serialized. + if ( ! is_string( $data ) ) { return false; + } $data = trim( $data ); - if ( 'N;' == $data ) + if ( 'N;' == $data ) { return true; - if ( !preg_match( '/^([adObis]):/', $data, $badions ) ) + } + if ( strlen( $data ) < 4 ) { + return false; + } + if ( ':' !== $data[1] ) { return false; - switch ( $badions[1] ) { + } + if ( $strict ) { + $lastc = substr( $data, -1 ); + if ( ';' !== $lastc && '}' !== $lastc ) { + return false; + } + } else { + $semicolon = strpos( $data, ';' ); + $brace = strpos( $data, '}' ); + // Either ; or } must exist. + if ( false === $semicolon && false === $brace ) + return false; + // But neither must be in the first X characters. + if ( false !== $semicolon && $semicolon < 3 ) + return false; + if ( false !== $brace && $brace < 4 ) + return false; + } + $token = $data[0]; + switch ( $token ) { + case 's' : + if ( $strict ) { + if ( '"' !== substr( $data, -2, 1 ) ) { + return false; + } + } elseif ( false === strpos( $data, '"' ) ) { + return false; + } + // or else fall through case 'a' : case 'O' : - case 's' : - if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) ) - return true; - break; + return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); case 'b' : case 'i' : case 'd' : - if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) ) - return true; - break; + $end = $strict ? '$' : ''; + return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data ); } return false; } @@ -275,2294 +397,2634 @@ function is_serialized( $data ) { * * @since 2.0.5 * - * @param mixed $data Serialized data + * @param string $data Serialized data. * @return bool False if not a serialized string, true if it is. */ function is_serialized_string( $data ) { - // if it isn't a string, it isn't a serialized string - if ( !is_string( $data ) ) + // if it isn't a string, it isn't a serialized string. + if ( ! is_string( $data ) ) { return false; + } $data = trim( $data ); - if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings + if ( strlen( $data ) < 4 ) { + return false; + } elseif ( ':' !== $data[1] ) { + return false; + } elseif ( ';' !== substr( $data, -1 ) ) { + return false; + } elseif ( $data[0] !== 's' ) { + return false; + } elseif ( '"' !== substr( $data, -2, 1 ) ) { + return false; + } else { return true; - return false; + } } /** - * Retrieve option value based on setting name. - * - * If the option does not exist or does not have a value, then the return value - * will be false. This is useful to check whether you need to install an option - * and is commonly used during installation of plugin options and to test - * whether upgrading is required. - * - * You can "short-circuit" the retrieval of the option from the database for - * your plugin or core options that aren't protected. You can do so by hooking - * into the 'pre_option_$option' with the $option being replaced by the option - * name. You should not try to override special options, but you will not be - * prevented from doing so. - * - * There is a second filter called 'option_$option' with the $option being - * replaced with the option name. This gives the value as the only parameter. - * - * If the option was serialized, when the option was added and, or updated, then - * it will be unserialized, when it is returned. + * Serialize data, if needed. * - * @since 1.5.0 - * @package WordPress - * @subpackage Option - * @uses apply_filters() Calls 'pre_option_$optionname' false to allow - * overwriting the option value in a plugin. - * @uses apply_filters() Calls 'option_$optionname' with the option name value. + * @since 2.0.5 * - * @param string $setting Name of option to retrieve. Should already be SQL-escaped - * @return mixed Value set for the option. + * @param string|array|object $data Data that might be serialized. + * @return mixed A scalar data */ -function get_option( $setting, $default = false ) { - global $wpdb; - - // Allow plugins to short-circuit options. - $pre = apply_filters( 'pre_option_' . $setting, false ); - if ( false !== $pre ) - return $pre; - - // prevent non-existent options from triggering multiple queries - $notoptions = wp_cache_get( 'notoptions', 'options' ); - if ( isset( $notoptions[$setting] ) ) - return $default; - - $alloptions = wp_load_alloptions(); - - if ( isset( $alloptions[$setting] ) ) { - $value = $alloptions[$setting]; - } else { - $value = wp_cache_get( $setting, 'options' ); - - if ( false === $value ) { - if ( defined( 'WP_INSTALLING' ) ) - $suppress = $wpdb->suppress_errors(); - // expected_slashed ($setting) - $row = $wpdb->get_row( "SELECT option_value FROM $wpdb->options WHERE option_name = '$setting' LIMIT 1" ); - if ( defined( 'WP_INSTALLING' ) ) - $wpdb->suppress_errors($suppress); - - if ( is_object( $row) ) { // Has to be get_row instead of get_var because of funkiness with 0, false, null values - $value = $row->option_value; - wp_cache_add( $setting, $value, 'options' ); - } else { // option does not exist, so we must cache its non-existence - $notoptions[$setting] = true; - wp_cache_set( 'notoptions', $notoptions, 'options' ); - return $default; - } - } - } - - // If home is not set use siteurl. - if ( 'home' == $setting && '' == $value ) - return get_option( 'siteurl' ); +function maybe_serialize( $data ) { + if ( is_array( $data ) || is_object( $data ) ) + return serialize( $data ); - if ( in_array( $setting, array('siteurl', 'home', 'category_base', 'tag_base') ) ) - $value = untrailingslashit( $value ); + // Double serialization is required for backward compatibility. + // See https://core.trac.wordpress.org/ticket/12930 + // Also the world will end. See WP 3.6.1. + if ( is_serialized( $data, false ) ) + return serialize( $data ); - return apply_filters( 'option_' . $setting, maybe_unserialize( $value ) ); + return $data; } /** - * Protect WordPress special option from being modified. + * Retrieve post title from XMLRPC XML. * - * Will die if $option is in protected list. Protected options are 'alloptions' - * and 'notoptions' options. + * If the title element is not part of the XML, then the default post title from + * the $post_default_title will be used instead. * - * @since 2.2.0 - * @package WordPress - * @subpackage Option + * @since 0.71 + * + * @global string $post_default_title Default XML-RPC post title. * - * @param string $option Option name. + * @param string $content XMLRPC XML Request content + * @return string Post title */ -function wp_protect_special_option( $option ) { - $protected = array( 'alloptions', 'notoptions' ); - if ( in_array( $option, $protected ) ) - die( sprintf( __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) ); +function xmlrpc_getposttitle( $content ) { + global $post_default_title; + if ( preg_match( '/(.+?)<\/title>/is', $content, $matchtitle ) ) { + $post_title = $matchtitle[1]; + } else { + $post_title = $post_default_title; + } + return $post_title; } /** - * Print option value after sanitizing for forms. + * Retrieve the post category or categories from XMLRPC XML. * - * @uses attr Sanitizes value. - * @since 1.5.0 - * @package WordPress - * @subpackage Option + * If the category element is not found, then the default post category will be + * used. The return type then would be what $post_default_category. If the + * category is found, then it will always be an array. + * + * @since 0.71 * - * @param string $option Option name. + * @global string $post_default_category Default XML-RPC post category. + * + * @param string $content XMLRPC XML Request content + * @return string|array List of categories or category name. */ -function form_option( $option ) { - echo esc_attr(get_option( $option ) ); +function xmlrpc_getpostcategory( $content ) { + global $post_default_category; + if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) { + $post_category = trim( $matchcat[1], ',' ); + $post_category = explode( ',', $post_category ); + } else { + $post_category = $post_default_category; + } + return $post_category; } /** - * Retrieve all autoload options or all options, if no autoloaded ones exist. - * - * This is different from wp_load_alloptions() in that this function does not - * cache its results and will retrieve all options from the database every time - * - * it is called. + * XMLRPC XML content without title and category elements. * - * @since 1.0.0 - * @package WordPress - * @subpackage Option - * @uses apply_filters() Calls 'pre_option_$optionname' hook with option value as parameter. - * @uses apply_filters() Calls 'all_options' on options list. + * @since 0.71 * - * @return array List of all options. + * @param string $content XML-RPC XML Request content. + * @return string XMLRPC XML Request content without title and category elements. */ -function get_alloptions() { - global $wpdb; - $show = $wpdb->hide_errors(); - if ( !$options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) ) - $options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" ); - $wpdb->show_errors($show); - - foreach ( (array) $options as $option ) { - // "When trying to design a foolproof system, - // never underestimate the ingenuity of the fools :)" -- Dougal - if ( in_array( $option->option_name, array( 'siteurl', 'home', 'category_base', 'tag_base' ) ) ) - $option->option_value = untrailingslashit( $option->option_value ); - $value = maybe_unserialize( $option->option_value ); - $all_options->{$option->option_name} = apply_filters( 'pre_option_' . $option->option_name, $value ); - } - return apply_filters( 'all_options', $all_options ); +function xmlrpc_removepostdata( $content ) { + $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content ); + $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content ); + $content = trim( $content ); + return $content; } /** - * Loads and caches all autoloaded options, if available or all options. - * - * This is different from get_alloptions(), in that this function will cache the - * options and will return the cached options when called again. + * Use RegEx to extract URLs from arbitrary content. * - * @since 2.2.0 - * @package WordPress - * @subpackage Option + * @since 3.7.0 * - * @return array List all options. + * @param string $content Content to extract URLs from. + * @return array URLs found in passed string. */ -function wp_load_alloptions() { - global $wpdb; +function wp_extract_urls( $content ) { + preg_match_all( + "#([\"']?)(" + . "(?:([\w-]+:)?//?)" + . "[^\s()<>]+" + . "[.]" + . "(?:" + . "\([\w\d]+\)|" + . "(?:" + . "[^`!()\[\]{};:'\".,<>«»“”‘’\s]|" + . "(?:[:]\d+)?/?" + . ")+" + . ")" + . ")\\1#", + $content, + $post_links + ); - $alloptions = wp_cache_get( 'alloptions', 'options' ); + $post_links = array_unique( array_map( 'html_entity_decode', $post_links[2] ) ); - if ( !$alloptions ) { - $suppress = $wpdb->suppress_errors(); - if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) ) - $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" ); - $wpdb->suppress_errors($suppress); - $alloptions = array(); - foreach ( (array) $alloptions_db as $o ) - $alloptions[$o->option_name] = $o->option_value; - wp_cache_add( 'alloptions', $alloptions, 'options' ); - } - return $alloptions; + return array_values( $post_links ); } /** - * Update the value of an option that was already added. - * - * You do not need to serialize values, if the value needs to be serialize, then - * it will be serialized before it is inserted into the database. Remember, - * resources can not be serialized or added as an option. - * - * If the option does not exist, then the option will be added with the option - * value, but you will not be able to set whether it is autoloaded. If you want - * to set whether an option autoloaded, then you need to use the add_option(). + * Check content for video and audio links to add as enclosures. * - * Before the option is updated, then the filter named - * 'pre_update_option_$option_name', with the $option_name as the $option_name - * parameter value, will be called. The hook should accept two parameters, the - * first is the new value and the second is the old value. Whatever is - * returned will be used as the new value. + * Will not add enclosures that have already been added and will + * remove enclosures that are no longer in the post. This is called as + * pingbacks and trackbacks. * - * After the value has been updated the action named 'update_option_$option_name' - * will be called. This action receives two parameters the first being the old - * value and the second the new value. + * @since 1.5.0 * - * @since 1.0.0 - * @package WordPress - * @subpackage Option + * @global wpdb $wpdb WordPress database abstraction object. * - * @param string $option_name Option name. Expected to not be SQL-escaped - * @param mixed $newvalue Option value. - * @return bool False if value was not updated and true if value was updated. + * @param string $content Post Content. + * @param int $post_ID Post ID. */ -function update_option( $option_name, $newvalue ) { +function do_enclose( $content, $post_ID ) { global $wpdb; - wp_protect_special_option( $option_name ); - - $safe_option_name = esc_sql( $option_name ); - $newvalue = sanitize_option( $option_name, $newvalue ); + //TODO: Tidy this ghetto code up and make the debug code optional + include_once( ABSPATH . WPINC . '/class-IXR.php' ); - $oldvalue = get_option( $safe_option_name ); + $post_links = array(); - $newvalue = apply_filters( 'pre_update_option_' . $option_name, $newvalue, $oldvalue ); + $pung = get_enclosed( $post_ID ); - // If the new and old values are the same, no need to update. - if ( $newvalue === $oldvalue ) - return false; + $post_links_temp = wp_extract_urls( $content ); - if ( false === $oldvalue ) { - add_option( $option_name, $newvalue ); - return true; + foreach ( $pung as $link_test ) { + if ( ! in_array( $link_test, $post_links_temp ) ) { // link no longer in post + $mids = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $link_test ) . '%') ); + foreach ( $mids as $mid ) + delete_metadata_by_mid( 'post', $mid ); + } } - $notoptions = wp_cache_get( 'notoptions', 'options' ); - if ( is_array( $notoptions ) && isset( $notoptions[$option_name] ) ) { - unset( $notoptions[$option_name] ); - wp_cache_set( 'notoptions', $notoptions, 'options' ); + foreach ( (array) $post_links_temp as $link_test ) { + if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already + $test = @parse_url( $link_test ); + if ( false === $test ) + continue; + if ( isset( $test['query'] ) ) + $post_links[] = $link_test; + elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($test['path'] != '' ) ) + $post_links[] = $link_test; + } } - $_newvalue = $newvalue; - $newvalue = maybe_serialize( $newvalue ); + /** + * Filter the list of enclosure links before querying the database. + * + * Allows for the addition and/or removal of potential enclosures to save + * to postmeta before checking the database for existing enclosures. + * + * @since 4.4.0 + * + * @param array $post_links An array of enclosure links. + * @param int $post_ID Post ID. + */ + $post_links = apply_filters( 'enclosure_links', $post_links, $post_ID ); - do_action( 'update_option', $option_name, $oldvalue, $newvalue ); - $alloptions = wp_load_alloptions(); - if ( isset( $alloptions[$option_name] ) ) { - $alloptions[$option_name] = $newvalue; - wp_cache_set( 'alloptions', $alloptions, 'options' ); - } else { - wp_cache_set( $option_name, $newvalue, 'options' ); - } + foreach ( (array) $post_links as $url ) { + if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE %s", $post_ID, $wpdb->esc_like( $url ) . '%' ) ) ) { - $wpdb->update($wpdb->options, array('option_value' => $newvalue), array('option_name' => $option_name) ); + if ( $headers = wp_get_http_headers( $url) ) { + $len = isset( $headers['content-length'] ) ? (int) $headers['content-length'] : 0; + $type = isset( $headers['content-type'] ) ? $headers['content-type'] : ''; + $allowed_types = array( 'video', 'audio' ); - if ( $wpdb->rows_affected == 1 ) { - do_action( "update_option_{$option_name}", $oldvalue, $_newvalue ); - do_action( 'updated_option', $option_name, $oldvalue, $_newvalue ); - return true; + // Check to see if we can figure out the mime type from + // the extension + $url_parts = @parse_url( $url ); + if ( false !== $url_parts ) { + $extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION ); + if ( !empty( $extension ) ) { + foreach ( wp_get_mime_types() as $exts => $mime ) { + if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) { + $type = $mime; + break; + } + } + } + } + + if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) { + add_post_meta( $post_ID, 'enclosure', "$url\n$len\n$mime\n" ); + } + } + } } - return false; } /** - * Add a new option. - * - * You do not need to serialize values, if the value needs to be serialize, then - * it will be serialized before it is inserted into the database. Remember, - * resources can not be serialized or added as an option. - * - * You can create options without values and then add values later. Does not - * check whether the option has already been added, but does check that you - * aren't adding a protected WordPress option. Care should be taken to not name - * options, the same as the ones which are protected and to not add options - * that were already added. - * - * The filter named 'add_option_$optionname', with the $optionname being - * replaced with the option's name, will be called. The hook should accept two - * parameters, the first is the option name, and the second is the value. + * Retrieve HTTP Headers from URL. * - * @package WordPress - * @subpackage Option - * @since 1.0.0 - * @link http://alex.vort-x.net/blog/ Thanks Alex Stapleton + * @since 1.5.1 * - * @param string $name Option name to add. Expects to NOT be SQL escaped. - * @param mixed $value Optional. Option value, can be anything. - * @param mixed $deprecated Optional. Description. Not used anymore. - * @param bool $autoload Optional. Default is enabled. Whether to load the option when WordPress starts up. - * @return null returns when finished. + * @param string $url URL to retrieve HTTP headers from. + * @param bool $deprecated Not Used. + * @return bool|string False on failure, headers on success. */ -function add_option( $name, $value = '', $deprecated = '', $autoload = 'yes' ) { - global $wpdb; - - wp_protect_special_option( $name ); - $safe_name = esc_sql( $name ); - $value = sanitize_option( $name, $value ); - - // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query - $notoptions = wp_cache_get( 'notoptions', 'options' ); - if ( !is_array( $notoptions ) || !isset( $notoptions[$name] ) ) - if ( false !== get_option( $safe_name ) ) - return; - - $value = maybe_serialize( $value ); - $autoload = ( 'no' === $autoload ) ? 'no' : 'yes'; - do_action( 'add_option', $name, $value ); - if ( 'yes' == $autoload ) { - $alloptions = wp_load_alloptions(); - $alloptions[$name] = $value; - wp_cache_set( 'alloptions', $alloptions, 'options' ); - } else { - wp_cache_set( $name, $value, 'options' ); - } +function wp_get_http_headers( $url, $deprecated = false ) { + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.7' ); - // This option exists now - $notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh - if ( is_array( $notoptions ) && isset( $notoptions[$name] ) ) { - unset( $notoptions[$name] ); - wp_cache_set( 'notoptions', $notoptions, 'options' ); - } + $response = wp_safe_remote_head( $url ); - $wpdb->query( $wpdb->prepare( "INSERT INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, %s) ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`)", $name, $value, $autoload ) ); + if ( is_wp_error( $response ) ) + return false; - do_action( "add_option_{$name}", $name, $value ); - do_action( 'added_option', $name, $value ); - - return; + return wp_remote_retrieve_headers( $response ); } /** - * Removes option by name and prevents removal of protected WordPress options. + * Whether the publish date of the current post in the loop is different from the + * publish date of the previous post in the loop. * - * @package WordPress - * @subpackage Option - * @since 1.2.0 + * @since 0.71 + * + * @global string $currentday The day of the current post in the loop. + * @global string $previousday The day of the previous post in the loop. * - * @param string $name Option name to remove. - * @return bool True, if succeed. False, if failure. + * @return int 1 when new day, 0 if not a new day. */ -function delete_option( $name ) { - global $wpdb; - - wp_protect_special_option( $name ); - - // Get the ID, if no ID then return - // expected_slashed ($name) - $option = $wpdb->get_row( "SELECT autoload FROM $wpdb->options WHERE option_name = '$name'" ); - if ( is_null($option) ) - return false; - do_action( 'delete_option', $name ); - // expected_slashed ($name) - $wpdb->query( "DELETE FROM $wpdb->options WHERE option_name = '$name'" ); - if ( 'yes' == $option->autoload ) { - $alloptions = wp_load_alloptions(); - if ( isset( $alloptions[$name] ) ) { - unset( $alloptions[$name] ); - wp_cache_set( 'alloptions', $alloptions, 'options' ); - } - } else { - wp_cache_delete( $name, 'options' ); - } - do_action( 'deleted_option', $name ); - return true; +function is_new_day() { + global $currentday, $previousday; + if ( $currentday != $previousday ) + return 1; + else + return 0; } /** - * Delete a transient + * Build URL query based on an associative and, or indexed array. * - * @since 2.8.0 - * @package WordPress - * @subpackage Transient + * This is a convenient function for easily building url queries. It sets the + * separator to '&' and uses _http_build_query() function. + * + * @since 2.3.0 + * + * @see _http_build_query() Used to build the query + * @see http://us2.php.net/manual/en/function.http-build-query.php for more on what + * http_build_query() does. * - * @param string $transient Transient name. Expected to not be SQL-escaped - * @return bool true if successful, false otherwise + * @param array $data URL-encode key/value pairs. + * @return string URL-encoded string. */ -function delete_transient($transient) { - global $_wp_using_ext_object_cache, $wpdb; - - if ( $_wp_using_ext_object_cache ) { - return wp_cache_delete($transient, 'transient'); - } else { - $transient = '_transient_' . esc_sql($transient); - return delete_option($transient); - } +function build_query( $data ) { + return _http_build_query( $data, null, '&', '', false ); } /** - * Get the value of a transient + * From php.net (modified by Mark Jaquith to behave like the native PHP5 function). * - * If the transient does not exist or does not have a value, then the return value - * will be false. + * @since 3.2.0 + * @access private * - * @since 2.8.0 - * @package WordPress - * @subpackage Transient + * @see http://us1.php.net/manual/en/function.http-build-query.php + * + * @param array|object $data An array or object of data. Converted to array. + * @param string $prefix Optional. Numeric index. If set, start parameter numbering with it. + * Default null. + * @param string $sep Optional. Argument separator; defaults to 'arg_separator.output'. + * Default null. + * @param string $key Optional. Used to prefix key name. Default empty. + * @param bool $urlencode Optional. Whether to use urlencode() in the result. Default true. * - * @param string $transient Transient name. Expected to not be SQL-escaped - * @return mixed Value of transient + * @return string The query string. */ -function get_transient($transient) { - global $_wp_using_ext_object_cache, $wpdb; - - $pre = apply_filters( 'pre_transient_' . $transient, false ); - if ( false !== $pre ) - return $pre; - - if ( $_wp_using_ext_object_cache ) { - $value = wp_cache_get($transient, 'transient'); - } else { - $transient_option = '_transient_' . esc_sql($transient); - // If option is not in alloptions, it is not autoloaded and thus has a timeout - $alloptions = wp_load_alloptions(); - if ( !isset( $alloptions[$transient_option] ) ) { - $transient_timeout = '_transient_timeout_' . esc_sql($transient); - if ( get_option($transient_timeout) < time() ) { - delete_option($transient_option); - delete_option($transient_timeout); - return false; - } - } +function _http_build_query( $data, $prefix = null, $sep = null, $key = '', $urlencode = true ) { + $ret = array(); + + foreach ( (array) $data as $k => $v ) { + if ( $urlencode) + $k = urlencode($k); + if ( is_int($k) && $prefix != null ) + $k = $prefix.$k; + if ( !empty($key) ) + $k = $key . '%5B' . $k . '%5D'; + if ( $v === null ) + continue; + elseif ( $v === false ) + $v = '0'; - $value = get_option($transient_option); + if ( is_array($v) || is_object($v) ) + array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode)); + elseif ( $urlencode ) + array_push($ret, $k.'='.urlencode($v)); + else + array_push($ret, $k.'='.$v); } - return apply_filters('transient_' . $transient, $value); + if ( null === $sep ) + $sep = ini_get('arg_separator.output'); + + return implode($sep, $ret); } /** - * Set/update the value of a transient + * Retrieves a modified URL query string. * - * You do not need to serialize values, if the value needs to be serialize, then - * it will be serialized before it is set. + * You can rebuild the URL and append query variables to the URL query by using this function. + * There are two ways to use this function; either a single key and value, or an associative array. * - * @since 2.8.0 - * @package WordPress - * @subpackage Transient + * Using a single key and value: + * + * add_query_arg( 'key', 'value', 'http://example.com' ); + * + * Using an associative array: + * + * add_query_arg( array( + * 'key1' => 'value1', + * 'key2' => 'value2', + * ), 'http://example.com' ); + * + * Omitting the URL from either use results in the current URL being used + * (the value of `$_SERVER['REQUEST_URI']`). * - * @param string $transient Transient name. Expected to not be SQL-escaped - * @param mixed $value Transient value. - * @param int $expiration Time until expiration in seconds, default 0 - * @return bool False if value was not set and true if value was set. + * Values are expected to be encoded appropriately with urlencode() or rawurlencode(). + * + * Setting any query variable's value to boolean false removes the key (see remove_query_arg()). + * + * Important: The return value of add_query_arg() is not escaped by default. Output should be + * late-escaped with esc_url() or similar to help prevent vulnerability to cross-site scripting + * (XSS) attacks. + * + * @since 1.5.0 + * + * @param string|array $key Either a query variable key, or an associative array of query variables. + * @param string $value Optional. Either a query variable value, or a URL to act upon. + * @param string $url Optional. A URL to act upon. + * @return string New URL query string (unescaped). */ -function set_transient($transient, $value, $expiration = 0) { - global $_wp_using_ext_object_cache, $wpdb; +function add_query_arg() { + $args = func_get_args(); + if ( is_array( $args[0] ) ) { + if ( count( $args ) < 2 || false === $args[1] ) + $uri = $_SERVER['REQUEST_URI']; + else + $uri = $args[1]; + } else { + if ( count( $args ) < 3 || false === $args[2] ) + $uri = $_SERVER['REQUEST_URI']; + else + $uri = $args[2]; + } + + if ( $frag = strstr( $uri, '#' ) ) + $uri = substr( $uri, 0, -strlen( $frag ) ); + else + $frag = ''; - if ( $_wp_using_ext_object_cache ) { - return wp_cache_set($transient, $value, 'transient', $expiration); + if ( 0 === stripos( $uri, 'http://' ) ) { + $protocol = 'http://'; + $uri = substr( $uri, 7 ); + } elseif ( 0 === stripos( $uri, 'https://' ) ) { + $protocol = 'https://'; + $uri = substr( $uri, 8 ); } else { - $transient_timeout = '_transient_timeout_' . $transient; - $transient = '_transient_' . $transient; - $safe_transient = esc_sql($transient); - if ( false === get_option( $safe_transient ) ) { - $autoload = 'yes'; - if ( 0 != $expiration ) { - $autoload = 'no'; - add_option($transient_timeout, time() + $expiration, '', 'no'); - } - return add_option($transient, $value, '', $autoload); - } else { - if ( 0 != $expiration ) - update_option($transient_timeout, time() + $expiration); - return update_option($transient, $value); + $protocol = ''; + } + + if ( strpos( $uri, '?' ) !== false ) { + list( $base, $query ) = explode( '?', $uri, 2 ); + $base .= '?'; + } elseif ( $protocol || strpos( $uri, '=' ) === false ) { + $base = $uri . '?'; + $query = ''; + } else { + $base = ''; + $query = $uri; + } + + wp_parse_str( $query, $qs ); + $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string + if ( is_array( $args[0] ) ) { + foreach ( $args[0] as $k => $v ) { + $qs[ $k ] = $v; } + } else { + $qs[ $args[0] ] = $args[1]; + } + + foreach ( $qs as $k => $v ) { + if ( $v === false ) + unset( $qs[$k] ); } + + $ret = build_query( $qs ); + $ret = trim( $ret, '?' ); + $ret = preg_replace( '#=(&|$)#', '$1', $ret ); + $ret = $protocol . $base . $ret . $frag; + $ret = rtrim( $ret, '?' ); + return $ret; } /** - * Saves and restores user interface settings stored in a cookie. + * Removes an item or items from a query string. * - * Checks if the current user-settings cookie is updated and stores it. When no - * cookie exists (different browser used), adds the last saved cookie restoring - * the settings. + * @since 1.5.0 * - * @package WordPress - * @subpackage Option - * @since 2.7.0 + * @param string|array $key Query key or keys to remove. + * @param bool|string $query Optional. When false uses the current URL. Default false. + * @return string New URL query string. */ -function wp_user_settings() { - - if ( ! is_admin() ) - return; - - if ( defined('DOING_AJAX') ) - return; - - if ( ! $user = wp_get_current_user() ) - return; - - $settings = get_user_option( 'user-settings', $user->ID, false ); - - if ( isset( $_COOKIE['wp-settings-' . $user->ID] ) ) { - $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] ); - - if ( ! empty( $cookie ) && strpos( $cookie, '=' ) ) { - if ( $cookie == $settings ) - return; - - $last_time = (int) get_user_option( 'user-settings-time', $user->ID, false ); - $saved = isset( $_COOKIE['wp-settings-time-' . $user->ID]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user->ID] ) : 0; - - if ( $saved > $last_time ) { - update_user_option( $user->ID, 'user-settings', $cookie, false ); - update_user_option( $user->ID, 'user-settings-time', time() - 5, false ); - return; - } - } +function remove_query_arg( $key, $query = false ) { + if ( is_array( $key ) ) { // removing multiple keys + foreach ( $key as $k ) + $query = add_query_arg( $k, false, $query ); + return $query; } - - setcookie( 'wp-settings-' . $user->ID, $settings, time() + 31536000, SITECOOKIEPATH ); - setcookie( 'wp-settings-time-' . $user->ID, time(), time() + 31536000, SITECOOKIEPATH ); - $_COOKIE['wp-settings-' . $user->ID] = $settings; + return add_query_arg( $key, false, $query ); } /** - * Retrieve user interface setting value based on setting name. + * Returns an array of single-use query variable names that can be removed from a URL. * - * @package WordPress - * @subpackage Option - * @since 2.7.0 + * @since 4.4.0 * - * @param string $name The name of the setting. - * @param string $default Optional default value to return when $name is not set. - * @return mixed the last saved user setting or the default value/false if it doesn't exist. + * @return array An array of parameters to remove from the URL. */ -function get_user_setting( $name, $default = false ) { +function wp_removable_query_args() { + $removable_query_args = array( + 'activate', + 'activated', + 'approved', + 'deactivate', + 'deleted', + 'disabled', + 'enabled', + 'error', + 'locked', + 'message', + 'same', + 'saved', + 'settings-updated', + 'skipped', + 'spammed', + 'trashed', + 'unspammed', + 'untrashed', + 'update', + 'updated', + 'wp-post-new-reload', + ); - $all = get_all_user_settings(); + /** + * Filter the list of query variables to remove. + * + * @since 4.2.0 + * + * @param array $removable_query_args An array of query variables to remove from a URL. + */ + return apply_filters( 'removable_query_args', $removable_query_args ); +} - return isset($all[$name]) ? $all[$name] : $default; +/** + * Walks the array while sanitizing the contents. + * + * @since 0.71 + * + * @param array $array Array to walk while sanitizing contents. + * @return array Sanitized $array. + */ +function add_magic_quotes( $array ) { + foreach ( (array) $array as $k => $v ) { + if ( is_array( $v ) ) { + $array[$k] = add_magic_quotes( $v ); + } else { + $array[$k] = addslashes( $v ); + } + } + return $array; } /** - * Add or update user interface setting. + * HTTP request for URI to retrieve content. * - * Both $name and $value can contain only ASCII letters, numbers and underscores. - * This function has to be used before any output has started as it calls setcookie(). + * @since 1.5.1 * - * @package WordPress - * @subpackage Option - * @since 2.8.0 + * @see wp_safe_remote_get() * - * @param string $name The name of the setting. - * @param string $value The value for the setting. - * @return bool true if set successfully/false if not. + * @param string $uri URI/URL of web page to retrieve. + * @return false|string HTTP content. False on failure. */ -function set_user_setting( $name, $value ) { +function wp_remote_fopen( $uri ) { + $parsed_url = @parse_url( $uri ); - if ( headers_sent() ) + if ( !$parsed_url || !is_array( $parsed_url ) ) return false; - $all = get_all_user_settings(); - $name = preg_replace( '/[^A-Za-z0-9_]+/', '', $name ); + $options = array(); + $options['timeout'] = 10; + + $response = wp_safe_remote_get( $uri, $options ); - if ( empty($name) ) + if ( is_wp_error( $response ) ) return false; - $all[$name] = $value; - - return wp_set_all_user_settings($all); + return wp_remote_retrieve_body( $response ); } /** - * Delete user interface settings. + * Set up the WordPress query. * - * Deleting settings would reset them to the defaults. - * This function has to be used before any output has started as it calls setcookie(). + * @since 2.0.0 * - * @package WordPress - * @subpackage Option - * @since 2.7.0 + * @global WP $wp_locale + * @global WP_Query $wp_query + * @global WP_Query $wp_the_query * - * @param mixed $names The name or array of names of the setting to be deleted. - * @return bool true if deleted successfully/false if not. + * @param string|array $query_vars Default WP_Query arguments. */ -function delete_user_setting( $names ) { - - if ( headers_sent() ) - return false; - - $all = get_all_user_settings(); - $names = (array) $names; - - foreach ( $names as $name ) { - if ( isset($all[$name]) ) { - unset($all[$name]); - $deleted = true; - } - } - - if ( isset($deleted) ) - return wp_set_all_user_settings($all); +function wp( $query_vars = '' ) { + global $wp, $wp_query, $wp_the_query; + $wp->main( $query_vars ); - return false; + if ( !isset($wp_the_query) ) + $wp_the_query = $wp_query; } /** - * Retrieve all user interface settings. + * Retrieve the description for the HTTP status. * - * @package WordPress - * @subpackage Option - * @since 2.7.0 + * @since 2.3.0 + * + * @global array $wp_header_to_desc * - * @return array the last saved user settings or empty array. + * @param int $code HTTP status code. + * @return string Empty string if not found, or description if found. */ -function get_all_user_settings() { - global $_updated_user_settings; +function get_status_header_desc( $code ) { + global $wp_header_to_desc; - if ( ! $user = wp_get_current_user() ) - return array(); + $code = absint( $code ); + + if ( !isset( $wp_header_to_desc ) ) { + $wp_header_to_desc = array( + 100 => 'Continue', + 101 => 'Switching Protocols', + 102 => 'Processing', - if ( isset($_updated_user_settings) && is_array($_updated_user_settings) ) - return $_updated_user_settings; + 200 => 'OK', + 201 => 'Created', + 202 => 'Accepted', + 203 => 'Non-Authoritative Information', + 204 => 'No Content', + 205 => 'Reset Content', + 206 => 'Partial Content', + 207 => 'Multi-Status', + 226 => 'IM Used', - $all = array(); - if ( isset($_COOKIE['wp-settings-' . $user->ID]) ) { - $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] ); + 300 => 'Multiple Choices', + 301 => 'Moved Permanently', + 302 => 'Found', + 303 => 'See Other', + 304 => 'Not Modified', + 305 => 'Use Proxy', + 306 => 'Reserved', + 307 => 'Temporary Redirect', - if ( $cookie && strpos($cookie, '=') ) // the '=' cannot be 1st char - parse_str($cookie, $all); + 400 => 'Bad Request', + 401 => 'Unauthorized', + 402 => 'Payment Required', + 403 => 'Forbidden', + 404 => 'Not Found', + 405 => 'Method Not Allowed', + 406 => 'Not Acceptable', + 407 => 'Proxy Authentication Required', + 408 => 'Request Timeout', + 409 => 'Conflict', + 410 => 'Gone', + 411 => 'Length Required', + 412 => 'Precondition Failed', + 413 => 'Request Entity Too Large', + 414 => 'Request-URI Too Long', + 415 => 'Unsupported Media Type', + 416 => 'Requested Range Not Satisfiable', + 417 => 'Expectation Failed', + 418 => 'I\'m a teapot', + 422 => 'Unprocessable Entity', + 423 => 'Locked', + 424 => 'Failed Dependency', + 426 => 'Upgrade Required', + 428 => 'Precondition Required', + 429 => 'Too Many Requests', + 431 => 'Request Header Fields Too Large', - } else { - $option = get_user_option('user-settings', $user->ID); - if ( $option && is_string($option) ) - parse_str( $option, $all ); + 500 => 'Internal Server Error', + 501 => 'Not Implemented', + 502 => 'Bad Gateway', + 503 => 'Service Unavailable', + 504 => 'Gateway Timeout', + 505 => 'HTTP Version Not Supported', + 506 => 'Variant Also Negotiates', + 507 => 'Insufficient Storage', + 510 => 'Not Extended', + 511 => 'Network Authentication Required', + ); } - return $all; + if ( isset( $wp_header_to_desc[$code] ) ) + return $wp_header_to_desc[$code]; + else + return ''; } /** - * Private. Set all user interface settings. + * Set HTTP status header. * - * @package WordPress - * @subpackage Option - * @since 2.8.0 + * @since 2.0.0 + * @since 4.4.0 Added the `$description` parameter. + * + * @see get_status_header_desc() * + * @param int $code HTTP status code. + * @param string $description Optional. A custom description for the HTTP status. */ -function wp_set_all_user_settings($all) { - global $_updated_user_settings; - - if ( ! $user = wp_get_current_user() ) - return false; - - $_updated_user_settings = $all; - $settings = ''; - foreach ( $all as $k => $v ) { - $v = preg_replace( '/[^A-Za-z0-9_]+/', '', $v ); - $settings .= $k . '=' . $v . '&'; +function status_header( $code, $description = '' ) { + if ( ! $description ) { + $description = get_status_header_desc( $code ); } - $settings = rtrim($settings, '&'); + if ( empty( $description ) ) { + return; + } - update_user_option( $user->ID, 'user-settings', $settings, false ); - update_user_option( $user->ID, 'user-settings-time', time(), false ); + $protocol = wp_get_server_protocol(); + $status_header = "$protocol $code $description"; + if ( function_exists( 'apply_filters' ) ) - return true; + /** + * Filter an HTTP status header. + * + * @since 2.2.0 + * + * @param string $status_header HTTP status header. + * @param int $code HTTP status code. + * @param string $description Description for the status code. + * @param string $protocol Server protocol. + */ + $status_header = apply_filters( 'status_header', $status_header, $code, $description, $protocol ); + + @header( $status_header, true, $code ); } /** - * Delete the user settings of the current user. + * Get the header information to prevent caching. * - * @package WordPress - * @subpackage Option - * @since 2.7.0 + * The several different headers cover the different ways cache prevention + * is handled by different browsers + * + * @since 2.8.0 + * + * @return array The associative array of header names and field values. */ -function delete_all_user_settings() { - if ( ! $user = wp_get_current_user() ) - return; +function wp_get_nocache_headers() { + $headers = array( + 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT', + 'Cache-Control' => 'no-cache, must-revalidate, max-age=0', + 'Pragma' => 'no-cache', + ); - update_user_option( $user->ID, 'user-settings', '', false ); - setcookie('wp-settings-' . $user->ID, ' ', time() - 31536000, SITECOOKIEPATH); + if ( function_exists('apply_filters') ) { + /** + * Filter the cache-controlling headers. + * + * @since 2.8.0 + * + * @see wp_get_nocache_headers() + * + * @param array $headers { + * Header names and field values. + * + * @type string $Expires Expires header. + * @type string $Cache-Control Cache-Control header. + * @type string $Pragma Pragma header. + * } + */ + $headers = (array) apply_filters( 'nocache_headers', $headers ); + } + $headers['Last-Modified'] = false; + return $headers; } /** - * Serialize data, if needed. + * Set the headers to prevent caching for the different browsers. * - * @since 2.0.5 + * Different browsers support different nocache headers, so several + * headers must be sent so that all of them get the point that no + * caching should occur. * - * @param mixed $data Data that might be serialized. - * @return mixed A scalar data + * @since 2.0.0 + * + * @see wp_get_nocache_headers() */ -function maybe_serialize( $data ) { - if ( is_array( $data ) || is_object( $data ) ) - return serialize( $data ); +function nocache_headers() { + $headers = wp_get_nocache_headers(); - if ( is_serialized( $data ) ) - return serialize( $data ); + unset( $headers['Last-Modified'] ); - return $data; + // In PHP 5.3+, make sure we are not sending a Last-Modified header. + if ( function_exists( 'header_remove' ) ) { + @header_remove( 'Last-Modified' ); + } else { + // In PHP 5.2, send an empty Last-Modified header, but only as a + // last resort to override a header already sent. #WP23021 + foreach ( headers_list() as $header ) { + if ( 0 === stripos( $header, 'Last-Modified' ) ) { + $headers['Last-Modified'] = ''; + break; + } + } + } + + foreach ( $headers as $name => $field_value ) + @header("{$name}: {$field_value}"); } /** - * Retrieve post title from XMLRPC XML. - * - * If the title element is not part of the XML, then the default post title from - * the $post_default_title will be used instead. - * - * @package WordPress - * @subpackage XMLRPC - * @since 0.71 - * - * @global string $post_default_title Default XMLRPC post title. + * Set the headers for caching for 10 days with JavaScript content type. * - * @param string $content XMLRPC XML Request content - * @return string Post title + * @since 2.1.0 */ -function xmlrpc_getposttitle( $content ) { - global $post_default_title; - if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) { - $post_title = $matchtitle[1]; - } else { - $post_title = $post_default_title; - } - return $post_title; +function cache_javascript_headers() { + $expiresOffset = 10 * DAY_IN_SECONDS; + + header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) ); + header( "Vary: Accept-Encoding" ); // Handle proxies + header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" ); } /** - * Retrieve the post category or categories from XMLRPC XML. - * - * If the category element is not found, then the default post category will be - * used. The return type then would be what $post_default_category. If the - * category is found, then it will always be an array. + * Retrieve the number of database queries during the WordPress execution. * - * @package WordPress - * @subpackage XMLRPC - * @since 0.71 + * @since 2.0.0 * - * @global string $post_default_category Default XMLRPC post category. + * @global wpdb $wpdb WordPress database abstraction object. * - * @param string $content XMLRPC XML Request content - * @return string|array List of categories or category name. + * @return int Number of database queries. */ -function xmlrpc_getpostcategory( $content ) { - global $post_default_category; - if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) { - $post_category = trim( $matchcat[1], ',' ); - $post_category = explode( ',', $post_category ); - } else { - $post_category = $post_default_category; - } - return $post_category; +function get_num_queries() { + global $wpdb; + return $wpdb->num_queries; } /** - * XMLRPC XML content without title and category elements. + * Whether input is yes or no. * - * @package WordPress - * @subpackage XMLRPC - * @since 0.71 + * Must be 'y' to be true. * - * @param string $content XMLRPC XML Request content - * @return string XMLRPC XML Request content without title and category elements. + * @since 1.0.0 + * + * @param string $yn Character string containing either 'y' (yes) or 'n' (no). + * @return bool True if yes, false on anything else. */ -function xmlrpc_removepostdata( $content ) { - $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content ); - $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content ); - $content = trim( $content ); - return $content; +function bool_from_yn( $yn ) { + return ( strtolower( $yn ) == 'y' ); } /** - * Open the file handle for debugging. + * Load the feed template from the use of an action hook. * - * This function is used for XMLRPC feature, but it is general purpose enough - * to be used in anywhere. + * If the feed action does not have a hook, then the function will die with a + * message telling the visitor that the feed is not valid. * - * @see fopen() for mode options. - * @package WordPress - * @subpackage Debug - * @since 0.71 - * @uses $debug Used for whether debugging is enabled. + * It is better to only have one hook for each feed. + * + * @since 2.1.0 * - * @param string $filename File path to debug file. - * @param string $mode Same as fopen() mode parameter. - * @return bool|resource File handle. False on failure. + * @global WP_Query $wp_query Used to tell if the use a comment feed. */ -function debug_fopen( $filename, $mode ) { - global $debug; - if ( 1 == $debug ) { - $fp = fopen( $filename, $mode ); - return $fp; - } else { - return false; +function do_feed() { + global $wp_query; + + $feed = get_query_var( 'feed' ); + + // Remove the pad, if present. + $feed = preg_replace( '/^_+/', '', $feed ); + + if ( $feed == '' || $feed == 'feed' ) + $feed = get_default_feed(); + + if ( ! has_action( "do_feed_{$feed}" ) ) { + wp_die( __( 'ERROR: This is not a valid feed template.' ), '', array( 'response' => 404 ) ); } + + /** + * Fires once the given feed is loaded. + * + * The dynamic portion of the hook name, `$feed`, refers to the feed template name. + * Possible values include: 'rdf', 'rss', 'rss2', and 'atom'. + * + * @since 2.1.0 + * @since 4.4.0 The `$feed` parameter was added. + * + * @param bool $is_comment_feed Whether the feed is a comment feed. + * @param string $feed The feed name. + */ + do_action( "do_feed_{$feed}", $wp_query->is_comment_feed, $feed ); } /** - * Write contents to the file used for debugging. + * Load the RDF RSS 0.91 Feed template. * - * Technically, this can be used to write to any file handle when the global - * $debug is set to 1 or true. + * @since 2.1.0 * - * @package WordPress - * @subpackage Debug - * @since 0.71 - * @uses $debug Used for whether debugging is enabled. + * @see load_template() + */ +function do_feed_rdf() { + load_template( ABSPATH . WPINC . '/feed-rdf.php' ); +} + +/** + * Load the RSS 1.0 Feed Template. + * + * @since 2.1.0 * - * @param resource $fp File handle for debugging file. - * @param string $string Content to write to debug file. + * @see load_template() */ -function debug_fwrite( $fp, $string ) { - global $debug; - if ( 1 == $debug ) - fwrite( $fp, $string ); +function do_feed_rss() { + load_template( ABSPATH . WPINC . '/feed-rss.php' ); } /** - * Close the debugging file handle. + * Load either the RSS2 comment feed or the RSS2 posts feed. * - * Technically, this can be used to close any file handle when the global $debug - * is set to 1 or true. + * @since 2.1.0 * - * @package WordPress - * @subpackage Debug - * @since 0.71 - * @uses $debug Used for whether debugging is enabled. + * @see load_template() * - * @param resource $fp Debug File handle. + * @param bool $for_comments True for the comment feed, false for normal feed. */ -function debug_fclose( $fp ) { - global $debug; - if ( 1 == $debug ) - fclose( $fp ); +function do_feed_rss2( $for_comments ) { + if ( $for_comments ) + load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' ); + else + load_template( ABSPATH . WPINC . '/feed-rss2.php' ); } /** - * Check content for video and audio links to add as enclosures. - * - * Will not add enclosures that have already been added and will - * remove enclosures that are no longer in the post. This is called as - * pingbacks and trackbacks. + * Load either Atom comment feed or Atom posts feed. * - * @package WordPress - * @since 1.5.0 + * @since 2.1.0 * - * @uses $wpdb + * @see load_template() * - * @param string $content Post Content - * @param int $post_ID Post ID + * @param bool $for_comments True for the comment feed, false for normal feed. */ -function do_enclose( $content, $post_ID ) { - global $wpdb; - include_once( ABSPATH . WPINC . '/class-IXR.php' ); - - $log = debug_fopen( ABSPATH . 'enclosures.log', 'a' ); - $post_links = array(); - debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" ); - - $pung = get_enclosed( $post_ID ); - - $ltrs = '\w'; - $gunk = '/#~:.?+=&%@!\-'; - $punc = '.:?\-'; - $any = $ltrs . $gunk . $punc; - - preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp ); +function do_feed_atom( $for_comments ) { + if ($for_comments) + load_template( ABSPATH . WPINC . '/feed-atom-comments.php'); + else + load_template( ABSPATH . WPINC . '/feed-atom.php' ); +} - debug_fwrite( $log, 'Post contents:' ); - debug_fwrite( $log, $content . "\n" ); +/** + * Display the robots.txt file content. + * + * The echo content should be with usage of the permalinks or for creating the + * robots.txt file. + * + * @since 2.1.0 + */ +function do_robots() { + header( 'Content-Type: text/plain; charset=utf-8' ); - foreach ( $pung as $link_test ) { - if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post - $mid = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $link_test . '%') ); - do_action( 'delete_postmeta', $mid ); - $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE post_id IN(%s)", implode( ',', $mid ) ) ); - do_action( 'deleted_postmeta', $mid ); - } - } + /** + * Fires when displaying the robots.txt file. + * + * @since 2.1.0 + */ + do_action( 'do_robotstxt' ); - foreach ( (array) $post_links_temp[0] as $link_test ) { - if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already - $test = parse_url( $link_test ); - if ( isset( $test['query'] ) ) - $post_links[] = $link_test; - elseif ( $test['path'] != '/' && $test['path'] != '' ) - $post_links[] = $link_test; - } + $output = "User-agent: *\n"; + $public = get_option( 'blog_public' ); + if ( '0' == $public ) { + $output .= "Disallow: /\n"; + } else { + $site_url = parse_url( site_url() ); + $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; + $output .= "Disallow: $path/wp-admin/\n"; + $output .= "Allow: $path/wp-admin/admin-ajax.php\n"; } - foreach ( (array) $post_links as $url ) { - if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $url . '%' ) ) ) { - if ( $headers = wp_get_http_headers( $url) ) { - $len = (int) $headers['content-length']; - $type = $headers['content-type']; - $allowed_types = array( 'video', 'audio' ); - if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) { - $meta_value = "$url\n$len\n$type\n"; - $wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) ); - do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $meta_value ); - } - } - } - } + /** + * Filter the robots.txt output. + * + * @since 3.0.0 + * + * @param string $output Robots.txt output. + * @param bool $public Whether the site is considered "public". + */ + echo apply_filters( 'robots_txt', $output, $public ); } /** - * Perform a HTTP HEAD or GET request. + * Test whether blog is already installed. * - * If $file_path is a writable filename, this will do a GET request and write - * the file to that path. + * The cache will be checked first. If you have a cache plugin, which saves + * the cache values, then this will work. If you use the default WordPress + * cache, and the database goes away, then you might have problems. * - * @since 2.5.0 + * Checks for the 'siteurl' option for whether WordPress is installed. + * + * @since 2.1.0 * - * @param string $url URL to fetch. - * @param string|bool $file_path Optional. File path to write request to. - * @param bool $deprecated Deprecated. Not used. - * @return bool|string False on failure and string of headers if HEAD request. + * @global wpdb $wpdb WordPress database abstraction object. + * + * @return bool Whether the blog is already installed. */ -function wp_get_http( $url, $file_path = false, $deprecated = false ) { - @set_time_limit( 60 ); +function is_blog_installed() { + global $wpdb; - $options = array(); - $options['redirection'] = 5; + /* + * Check cache first. If options table goes away and we have true + * cached, oh well. + */ + if ( wp_cache_get( 'is_blog_installed' ) ) + return true; - if ( false == $file_path ) - $options['method'] = 'HEAD'; + $suppress = $wpdb->suppress_errors(); + if ( ! wp_installing() ) { + $alloptions = wp_load_alloptions(); + } + // If siteurl is not set to autoload, check it specifically + if ( !isset( $alloptions['siteurl'] ) ) + $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" ); else - $options['method'] = 'GET'; + $installed = $alloptions['siteurl']; + $wpdb->suppress_errors( $suppress ); - $response = wp_remote_request($url, $options); + $installed = !empty( $installed ); + wp_cache_set( 'is_blog_installed', $installed ); - if ( is_wp_error( $response ) ) - return false; + if ( $installed ) + return true; - $headers = wp_remote_retrieve_headers( $response ); - $headers['response'] = $response['response']['code']; + // If visiting repair.php, return true and let it take over. + if ( defined( 'WP_REPAIRING' ) ) + return true; - if ( false == $file_path ) - return $headers; + $suppress = $wpdb->suppress_errors(); - // GET request - write it to the supplied filename - $out_fp = fopen($file_path, 'w'); - if ( !$out_fp ) - return $headers; + /* + * Loop over the WP tables. If none exist, then scratch install is allowed. + * If one or more exist, suggest table repair since we got here because the + * options table could not be accessed. + */ + $wp_tables = $wpdb->tables(); + foreach ( $wp_tables as $table ) { + // The existence of custom user tables shouldn't suggest an insane state or prevent a clean install. + if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table ) + continue; + if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table ) + continue; - fwrite( $out_fp, $response['body']); - fclose($out_fp); + if ( ! $wpdb->get_results( "DESCRIBE $table;" ) ) + continue; - return $headers; -} + // One or more tables exist. We are insane. -/** - * Retrieve HTTP Headers from URL. - * - * @since 1.5.1 - * - * @param string $url - * @param bool $deprecated Not Used. - * @return bool|string False on failure, headers on success. - */ -function wp_get_http_headers( $url, $deprecated = false ) { - $response = wp_remote_head( $url ); + wp_load_translations_early(); - if ( is_wp_error( $response ) ) - return false; + // Die with a DB error. + $wpdb->error = sprintf( __( 'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.' ), 'maint/repair.php?referrer=is_blog_installed' ); + dead_db(); + } - return wp_remote_retrieve_headers( $response ); + $wpdb->suppress_errors( $suppress ); + + wp_cache_set( 'is_blog_installed', false ); + + return false; } /** - * Whether today is a new day. + * Retrieve URL with nonce added to URL query. * - * @since 0.71 - * @uses $day Today - * @uses $previousday Previous day + * @since 2.0.4 * - * @return int 1 when new day, 0 if not a new day. + * @param string $actionurl URL to add nonce action. + * @param int|string $action Optional. Nonce action name. Default -1. + * @param string $name Optional. Nonce name. Default '_wpnonce'. + * @return string Escaped URL with nonce action added. */ -function is_new_day() { - global $day, $previousday; - if ( $day != $previousday ) - return 1; - else - return 0; +function wp_nonce_url( $actionurl, $action = -1, $name = '_wpnonce' ) { + $actionurl = str_replace( '&', '&', $actionurl ); + return esc_html( add_query_arg( $name, wp_create_nonce( $action ), $actionurl ) ); } /** - * Build URL query based on an associative and, or indexed array. + * Retrieve or display nonce hidden field for forms. * - * This is a convenient function for easily building url queries. It sets the - * separator to '&' and uses _http_build_query() function. + * The nonce field is used to validate that the contents of the form came from + * the location on the current site and not somewhere else. The nonce does not + * offer absolute protection, but should protect against most cases. It is very + * important to use nonce field in forms. * - * @see _http_build_query() Used to build the query - * @link http://us2.php.net/manual/en/function.http-build-query.php more on what - * http_build_query() does. + * The $action and $name are optional, but if you want to have better security, + * it is strongly suggested to set those two parameters. It is easier to just + * call the function without any parameters, because validation of the nonce + * doesn't require any parameters, but since crackers know what the default is + * it won't be difficult for them to find a way around your nonce and cause + * damage. * - * @since 2.3.0 + * The input name will be whatever $name value you gave. The input value will be + * the nonce creation value. * - * @param array $data URL-encode key/value pairs. - * @return string URL encoded string + * @since 2.0.4 + * + * @param int|string $action Optional. Action name. Default -1. + * @param string $name Optional. Nonce name. Default '_wpnonce'. + * @param bool $referer Optional. Whether to set the referer field for validation. Default true. + * @param bool $echo Optional. Whether to display or return hidden form field. Default true. + * @return string Nonce field HTML markup. */ -function build_query( $data ) { - return _http_build_query( $data, null, '&', '', false ); +function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) { + $name = esc_attr( $name ); + $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />'; + + if ( $referer ) + $nonce_field .= wp_referer_field( false ); + + if ( $echo ) + echo $nonce_field; + + return $nonce_field; } /** - * Retrieve a modified URL query string. - * - * You can rebuild the URL and append a new query variable to the URL query by - * using this function. You can also retrieve the full URL with query data. + * Retrieve or display referer hidden field for forms. * - * Adding a single key & value or an associative array. Setting a key value to - * emptystring removes the key. Omitting oldquery_or_uri uses the $_SERVER - * value. + * The referer link is the current Request URI from the server super global. The + * input name is '_wp_http_referer', in case you wanted to check manually. * - * @since 1.5.0 + * @since 2.0.4 * - * @param mixed $param1 Either newkey or an associative_array - * @param mixed $param2 Either newvalue or oldquery or uri - * @param mixed $param3 Optional. Old query or uri - * @return string New URL query string. + * @param bool $echo Optional. Whether to echo or return the referer field. Default true. + * @return string Referer field HTML markup. */ -function add_query_arg() { - $ret = ''; - if ( is_array( func_get_arg(0) ) ) { - if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) ) - $uri = $_SERVER['REQUEST_URI']; - else - $uri = @func_get_arg( 1 ); - } else { - if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) ) - $uri = $_SERVER['REQUEST_URI']; - else - $uri = @func_get_arg( 2 ); - } - - if ( $frag = strstr( $uri, '#' ) ) - $uri = substr( $uri, 0, -strlen( $frag ) ); - else - $frag = ''; - - if ( preg_match( '|^https?://|i', $uri, $matches ) ) { - $protocol = $matches[0]; - $uri = substr( $uri, strlen( $protocol ) ); - } else { - $protocol = ''; - } - - if ( strpos( $uri, '?' ) !== false ) { - $parts = explode( '?', $uri, 2 ); - if ( 1 == count( $parts ) ) { - $base = '?'; - $query = $parts[0]; - } else { - $base = $parts[0] . '?'; - $query = $parts[1]; - } - } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) { - $base = $uri . '?'; - $query = ''; - } else { - $base = ''; - $query = $uri; - } - - wp_parse_str( $query, $qs ); - $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string - if ( is_array( func_get_arg( 0 ) ) ) { - $kayvees = func_get_arg( 0 ); - $qs = array_merge( $qs, $kayvees ); - } else { - $qs[func_get_arg( 0 )] = func_get_arg( 1 ); - } - - foreach ( (array) $qs as $k => $v ) { - if ( $v === false ) - unset( $qs[$k] ); - } +function wp_referer_field( $echo = true ) { + $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. esc_attr( wp_unslash( $_SERVER['REQUEST_URI'] ) ) . '" />'; - $ret = build_query( $qs ); - $ret = trim( $ret, '?' ); - $ret = preg_replace( '#=(&|$)#', '$1', $ret ); - $ret = $protocol . $base . $ret . $frag; - $ret = rtrim( $ret, '?' ); - return $ret; + if ( $echo ) + echo $referer_field; + return $referer_field; } /** - * Removes an item or list from the query string. - * - * @since 1.5.0 + * Retrieve or display original referer hidden field for forms. * - * @param string|array $key Query key or keys to remove. - * @param bool $query When false uses the $_SERVER value. - * @return string New URL query string. - */ -function remove_query_arg( $key, $query=false ) { - if ( is_array( $key ) ) { // removing multiple keys - foreach ( $key as $k ) - $query = add_query_arg( $k, false, $query ); - return $query; - } - return add_query_arg( $key, false, $query ); -} - -/** - * Walks the array while sanitizing the contents. + * The input name is '_wp_original_http_referer' and will be either the same + * value of wp_referer_field(), if that was posted already or it will be the + * current page, if it doesn't exist. * - * @uses $wpdb Used to sanitize values - * @since 0.71 + * @since 2.0.4 * - * @param array $array Array to used to walk while sanitizing contents. - * @return array Sanitized $array. + * @param bool $echo Optional. Whether to echo the original http referer. Default true. + * @param string $jump_back_to Optional. Can be 'previous' or page you want to jump back to. + * Default 'current'. + * @return string Original referer field. */ -function add_magic_quotes( $array ) { - global $wpdb; - - foreach ( (array) $array as $k => $v ) { - if ( is_array( $v ) ) { - $array[$k] = add_magic_quotes( $v ); - } else { - $array[$k] = esc_sql( $v ); - } +function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) { + if ( ! $ref = wp_get_original_referer() ) { + $ref = 'previous' == $jump_back_to ? wp_get_referer() : wp_unslash( $_SERVER['REQUEST_URI'] ); } - return $array; + $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( $ref ) . '" />'; + if ( $echo ) + echo $orig_referer_field; + return $orig_referer_field; } /** - * HTTP request for URI to retrieve content. + * Retrieve referer from '_wp_http_referer' or HTTP referer. * - * @since 1.5.1 - * @uses wp_remote_get() + * If it's the same as the current request URL, will return false. * - * @param string $uri URI/URL of web page to retrieve. - * @return bool|string HTTP content. False on failure. + * @since 2.0.4 + * + * @return false|string False on failure. Referer URL on success. */ -function wp_remote_fopen( $uri ) { - $parsed_url = @parse_url( $uri ); - - if ( !$parsed_url || !is_array( $parsed_url ) ) - return false; - - $options = array(); - $options['timeout'] = 10; - - $response = wp_remote_get( $uri, $options ); - - if ( is_wp_error( $response ) ) +function wp_get_referer() { + if ( ! function_exists( 'wp_validate_redirect' ) ) return false; + $ref = false; + if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) + $ref = wp_unslash( $_REQUEST['_wp_http_referer'] ); + elseif ( ! empty( $_SERVER['HTTP_REFERER'] ) ) + $ref = wp_unslash( $_SERVER['HTTP_REFERER'] ); - return $response['body']; + if ( $ref && $ref !== wp_unslash( $_SERVER['REQUEST_URI'] ) ) + return wp_validate_redirect( $ref, false ); + return false; } /** - * Setup the WordPress query. + * Retrieve original referer that was posted, if it exists. * - * @since 2.0.0 + * @since 2.0.4 * - * @param string $query_vars Default WP_Query arguments. + * @return string|false False if no original referer or original referer if set. */ -function wp( $query_vars = '' ) { - global $wp, $wp_query, $wp_the_query; - $wp->main( $query_vars ); - - if( !isset($wp_the_query) ) - $wp_the_query = $wp_query; +function wp_get_original_referer() { + if ( ! empty( $_REQUEST['_wp_original_http_referer'] ) && function_exists( 'wp_validate_redirect' ) ) + return wp_validate_redirect( wp_unslash( $_REQUEST['_wp_original_http_referer'] ), false ); + return false; } /** - * Retrieve the description for the HTTP status. + * Recursive directory creation based on full path. * - * @since 2.3.0 + * Will attempt to set permissions on folders. * - * @param int $code HTTP status code. - * @return string Empty string if not found, or description if found. + * @since 2.0.1 + * + * @param string $target Full path to attempt to create. + * @return bool Whether the path was created. True if path already exists. */ -function get_status_header_desc( $code ) { - global $wp_header_to_desc; +function wp_mkdir_p( $target ) { + $wrapper = null; - $code = absint( $code ); + // Strip the protocol. + if ( wp_is_stream( $target ) ) { + list( $wrapper, $target ) = explode( '://', $target, 2 ); + } - if ( !isset( $wp_header_to_desc ) ) { - $wp_header_to_desc = array( - 100 => 'Continue', - 101 => 'Switching Protocols', - 102 => 'Processing', + // From php.net/mkdir user contributed notes. + $target = str_replace( '//', '/', $target ); - 200 => 'OK', - 201 => 'Created', - 202 => 'Accepted', - 203 => 'Non-Authoritative Information', - 204 => 'No Content', - 205 => 'Reset Content', - 206 => 'Partial Content', - 207 => 'Multi-Status', - 226 => 'IM Used', + // Put the wrapper back on the target. + if ( $wrapper !== null ) { + $target = $wrapper . '://' . $target; + } - 300 => 'Multiple Choices', - 301 => 'Moved Permanently', - 302 => 'Found', - 303 => 'See Other', - 304 => 'Not Modified', - 305 => 'Use Proxy', - 306 => 'Reserved', - 307 => 'Temporary Redirect', + /* + * Safe mode fails with a trailing slash under certain PHP versions. + * Use rtrim() instead of untrailingslashit to avoid formatting.php dependency. + */ + $target = rtrim($target, '/'); + if ( empty($target) ) + $target = '/'; - 400 => 'Bad Request', - 401 => 'Unauthorized', - 402 => 'Payment Required', - 403 => 'Forbidden', - 404 => 'Not Found', - 405 => 'Method Not Allowed', - 406 => 'Not Acceptable', - 407 => 'Proxy Authentication Required', - 408 => 'Request Timeout', - 409 => 'Conflict', - 410 => 'Gone', - 411 => 'Length Required', - 412 => 'Precondition Failed', - 413 => 'Request Entity Too Large', - 414 => 'Request-URI Too Long', - 415 => 'Unsupported Media Type', - 416 => 'Requested Range Not Satisfiable', - 417 => 'Expectation Failed', - 422 => 'Unprocessable Entity', - 423 => 'Locked', - 424 => 'Failed Dependency', - 426 => 'Upgrade Required', + if ( file_exists( $target ) ) + return @is_dir( $target ); - 500 => 'Internal Server Error', - 501 => 'Not Implemented', - 502 => 'Bad Gateway', - 503 => 'Service Unavailable', - 504 => 'Gateway Timeout', - 505 => 'HTTP Version Not Supported', - 506 => 'Variant Also Negotiates', - 507 => 'Insufficient Storage', - 510 => 'Not Extended' - ); + // We need to find the permissions of the parent folder that exists and inherit that. + $target_parent = dirname( $target ); + while ( '.' != $target_parent && ! is_dir( $target_parent ) ) { + $target_parent = dirname( $target_parent ); } - if ( isset( $wp_header_to_desc[$code] ) ) - return $wp_header_to_desc[$code]; - else - return ''; + // Get the permission bits. + if ( $stat = @stat( $target_parent ) ) { + $dir_perms = $stat['mode'] & 0007777; + } else { + $dir_perms = 0777; + } + + if ( @mkdir( $target, $dir_perms, true ) ) { + + /* + * If a umask is set that modifies $dir_perms, we'll have to re-set + * the $dir_perms correctly with chmod() + */ + if ( $dir_perms != ( $dir_perms & ~umask() ) ) { + $folder_parts = explode( '/', substr( $target, strlen( $target_parent ) + 1 ) ); + for ( $i = 1, $c = count( $folder_parts ); $i <= $c; $i++ ) { + @chmod( $target_parent . '/' . implode( '/', array_slice( $folder_parts, 0, $i ) ), $dir_perms ); + } + } + + return true; + } + + return false; } /** - * Set HTTP status header. + * Test if a give filesystem path is absolute. * - * @since 2.0.0 - * @uses apply_filters() Calls 'status_header' on status header string, HTTP - * HTTP code, HTTP code description, and protocol string as separate - * parameters. + * For example, '/foo/bar', or 'c:\windows'. + * + * @since 2.5.0 * - * @param int $header HTTP status code - * @return null Does not return anything. + * @param string $path File path. + * @return bool True if path is absolute, false is not absolute. */ -function status_header( $header ) { - $text = get_status_header_desc( $header ); +function path_is_absolute( $path ) { + /* + * This is definitive if true but fails if $path does not exist or contains + * a symbolic link. + */ + if ( realpath($path) == $path ) + return true; - if ( empty( $text ) ) + if ( strlen($path) == 0 || $path[0] == '.' ) return false; - $protocol = $_SERVER["SERVER_PROTOCOL"]; - if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol ) - $protocol = 'HTTP/1.0'; - $status_header = "$protocol $header $text"; - if ( function_exists( 'apply_filters' ) ) - $status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol ); + // Windows allows absolute paths like this. + if ( preg_match('#^[a-zA-Z]:\\\\#', $path) ) + return true; - return @header( $status_header, true, $header ); + // A path starting with / or \ is absolute; anything else is relative. + return ( $path[0] == '/' || $path[0] == '\\' ); } /** - * Gets the header information to prevent caching. + * Join two filesystem paths together. * - * The several different headers cover the different ways cache prevention is handled - * by different browsers + * For example, 'give me $path relative to $base'. If the $path is absolute, + * then it the full path is returned. * - * @since 2.8 + * @since 2.5.0 * - * @uses apply_filters() - * @return array The associative array of header names and field values. + * @param string $base Base path. + * @param string $path Path relative to $base. + * @return string The path with the base or absolute path. */ -function wp_get_nocache_headers() { - $headers = array( - 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT', - 'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT', - 'Cache-Control' => 'no-cache, must-revalidate, max-age=0', - 'Pragma' => 'no-cache', - ); +function path_join( $base, $path ) { + if ( path_is_absolute($path) ) + return $path; - if ( function_exists('apply_filters') ) { - $headers = apply_filters('nocache_headers', $headers); - } - return $headers; + return rtrim($base, '/') . '/' . ltrim($path, '/'); } /** - * Sets the headers to prevent caching for the different browsers. + * Normalize a filesystem path. * - * Different browsers support different nocache headers, so several headers must - * be sent so that all of them get the point that no caching should occur. + * On windows systems, replaces backslashes with forward slashes + * and forces upper-case drive letters. + * Ensures that no duplicate slashes exist. * - * @since 2.0.0 - * @uses wp_get_nocache_headers() - */ -function nocache_headers() { - $headers = wp_get_nocache_headers(); - foreach( (array) $headers as $name => $field_value ) - @header("{$name}: {$field_value}"); -} - -/** - * Set the headers for caching for 10 days with JavaScript content type. + * @since 3.9.0 + * @since 4.4.0 Ensures upper-case drive letters on Windows systems. * - * @since 2.1.0 + * @param string $path Path to normalize. + * @return string Normalized path. */ -function cache_javascript_headers() { - $expiresOffset = 864000; // 10 days - header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) ); - header( "Vary: Accept-Encoding" ); // Handle proxies - header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" ); +function wp_normalize_path( $path ) { + $path = str_replace( '\\', '/', $path ); + $path = preg_replace( '|/+|','/', $path ); + if ( ':' === substr( $path, 1, 1 ) ) { + $path = ucfirst( $path ); + } + return $path; } /** - * Retrieve the number of database queries during the WordPress execution. + * Determine a writable directory for temporary files. * - * @since 2.0.0 + * Function's preference is the return value of sys_get_temp_dir(), + * followed by your PHP temporary upload directory, followed by WP_CONTENT_DIR, + * before finally defaulting to /tmp/ + * + * In the event that this function does not find a writable location, + * It may be overridden by the WP_TEMP_DIR constant in your wp-config.php file. + * + * @since 2.5.0 + * + * @staticvar string $temp * - * @return int Number of database queries + * @return string Writable temporary directory. */ -function get_num_queries() { - global $wpdb; - return $wpdb->num_queries; +function get_temp_dir() { + static $temp = ''; + if ( defined('WP_TEMP_DIR') ) + return trailingslashit(WP_TEMP_DIR); + + if ( $temp ) + return trailingslashit( $temp ); + + if ( function_exists('sys_get_temp_dir') ) { + $temp = sys_get_temp_dir(); + if ( @is_dir( $temp ) && wp_is_writable( $temp ) ) + return trailingslashit( $temp ); + } + + $temp = ini_get('upload_tmp_dir'); + if ( @is_dir( $temp ) && wp_is_writable( $temp ) ) + return trailingslashit( $temp ); + + $temp = WP_CONTENT_DIR . '/'; + if ( is_dir( $temp ) && wp_is_writable( $temp ) ) + return $temp; + + return '/tmp/'; } /** - * Whether input is yes or no. Must be 'y' to be true. + * Determine if a directory is writable. * - * @since 1.0.0 + * This function is used to work around certain ACL issues in PHP primarily + * affecting Windows Servers. + * + * @since 3.6.0 + * + * @see win_is_writable() * - * @param string $yn Character string containing either 'y' or 'n' - * @return bool True if yes, false on anything else + * @param string $path Path to check for write-ability. + * @return bool Whether the path is writable. */ -function bool_from_yn( $yn ) { - return ( strtolower( $yn ) == 'y' ); +function wp_is_writable( $path ) { + if ( 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) ) + return win_is_writable( $path ); + else + return @is_writable( $path ); } /** - * Loads the feed template from the use of an action hook. + * Workaround for Windows bug in is_writable() function * - * If the feed action does not have a hook, then the function will die with a - * message telling the visitor that the feed is not valid. + * PHP has issues with Windows ACL's for determine if a + * directory is writable or not, this works around them by + * checking the ability to open files rather than relying + * upon PHP to interprate the OS ACL. * - * It is better to only have one hook for each feed. + * @since 2.8.0 * - * @since 2.1.0 - * @uses $wp_query Used to tell if the use a comment feed. - * @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed. + * @see http://bugs.php.net/bug.php?id=27609 + * @see http://bugs.php.net/bug.php?id=30931 + * + * @param string $path Windows path to check for write-ability. + * @return bool Whether the path is writable. */ -function do_feed() { - global $wp_query; - - $feed = get_query_var( 'feed' ); - - // Remove the pad, if present. - $feed = preg_replace( '/^_+/', '', $feed ); +function win_is_writable( $path ) { - if ( $feed == '' || $feed == 'feed' ) - $feed = get_default_feed(); - - $hook = 'do_feed_' . $feed; - if ( !has_action($hook) ) { - $message = sprintf( __( 'ERROR: %s is not a valid feed template' ), esc_html($feed)); - wp_die($message); + if ( $path[strlen( $path ) - 1] == '/' ) { // if it looks like a directory, check a random file within the directory + return win_is_writable( $path . uniqid( mt_rand() ) . '.tmp'); + } elseif ( is_dir( $path ) ) { // If it's a directory (and not a file) check a random file within the directory + return win_is_writable( $path . '/' . uniqid( mt_rand() ) . '.tmp' ); } - - do_action( $hook, $wp_query->is_comment_feed ); + // check tmp file for read/write capabilities + $should_delete_tmp_file = !file_exists( $path ); + $f = @fopen( $path, 'a' ); + if ( $f === false ) + return false; + fclose( $f ); + if ( $should_delete_tmp_file ) + unlink( $path ); + return true; } /** - * Load the RDF RSS 0.91 Feed template. + * Get an array containing the current upload directory's path and url. * - * @since 2.1.0 - */ -function do_feed_rdf() { - load_template( ABSPATH . WPINC . '/feed-rdf.php' ); -} - -/** - * Load the RSS 1.0 Feed Template + * Checks the 'upload_path' option, which should be from the web root folder, + * and if it isn't empty it will be used. If it is empty, then the path will be + * 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will + * override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path. * - * @since 2.1.0 - */ -function do_feed_rss() { - load_template( ABSPATH . WPINC . '/feed-rss.php' ); -} - -/** - * Load either the RSS2 comment feed or the RSS2 posts feed. + * The upload URL path is set either by the 'upload_url_path' option or by using + * the 'WP_CONTENT_URL' constant and appending '/uploads' to the path. * - * @since 2.1.0 + * If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in + * the administration settings panel), then the time will be used. The format + * will be year first and then month. * - * @param bool $for_comments True for the comment feed, false for normal feed. - */ -function do_feed_rss2( $for_comments ) { - if ( $for_comments ) - load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' ); - else - load_template( ABSPATH . WPINC . '/feed-rss2.php' ); -} - -/** - * Load either Atom comment feed or Atom posts feed. + * If the path couldn't be created, then an error will be returned with the key + * 'error' containing the error message. The error suggests that the parent + * directory is not writable by the server. * - * @since 2.1.0 + * On success, the returned array will have many indices: + * 'path' - base directory and sub directory or full path to upload directory. + * 'url' - base url and sub directory or absolute URL to upload directory. + * 'subdir' - sub directory if uploads use year/month folders option is on. + * 'basedir' - path without subdir. + * 'baseurl' - URL path without subdir. + * 'error' - set to false. * - * @param bool $for_comments True for the comment feed, false for normal feed. + * @since 2.0.0 + * + * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null. + * @return array See above for description. */ -function do_feed_atom( $for_comments ) { - if ($for_comments) - load_template( ABSPATH . WPINC . '/feed-atom-comments.php'); - else - load_template( ABSPATH . WPINC . '/feed-atom.php' ); +function wp_upload_dir( $time = null ) { + $siteurl = get_option( 'siteurl' ); + $upload_path = trim( get_option( 'upload_path' ) ); + + if ( empty( $upload_path ) || 'wp-content/uploads' == $upload_path ) { + $dir = WP_CONTENT_DIR . '/uploads'; + } elseif ( 0 !== strpos( $upload_path, ABSPATH ) ) { + // $dir is absolute, $upload_path is (maybe) relative to ABSPATH + $dir = path_join( ABSPATH, $upload_path ); + } else { + $dir = $upload_path; + } + + if ( !$url = get_option( 'upload_url_path' ) ) { + if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) ) + $url = WP_CONTENT_URL . '/uploads'; + else + $url = trailingslashit( $siteurl ) . $upload_path; + } + + /* + * Honor the value of UPLOADS. This happens as long as ms-files rewriting is disabled. + * We also sometimes obey UPLOADS when rewriting is enabled -- see the next block. + */ + if ( defined( 'UPLOADS' ) && ! ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) ) { + $dir = ABSPATH . UPLOADS; + $url = trailingslashit( $siteurl ) . UPLOADS; + } + + // If multisite (and if not the main site in a post-MU network) + if ( is_multisite() && ! ( is_main_network() && is_main_site() && defined( 'MULTISITE' ) ) ) { + + if ( ! get_site_option( 'ms_files_rewriting' ) ) { + /* + * If ms-files rewriting is disabled (networks created post-3.5), it is fairly + * straightforward: Append sites/%d if we're not on the main site (for post-MU + * networks). (The extra directory prevents a four-digit ID from conflicting with + * a year-based directory for the main site. But if a MU-era network has disabled + * ms-files rewriting manually, they don't need the extra directory, as they never + * had wp-content/uploads for the main site.) + */ + + if ( defined( 'MULTISITE' ) ) + $ms_dir = '/sites/' . get_current_blog_id(); + else + $ms_dir = '/' . get_current_blog_id(); + + $dir .= $ms_dir; + $url .= $ms_dir; + + } elseif ( defined( 'UPLOADS' ) && ! ms_is_switched() ) { + /* + * Handle the old-form ms-files.php rewriting if the network still has that enabled. + * When ms-files rewriting is enabled, then we only listen to UPLOADS when: + * 1) We are not on the main site in a post-MU network, as wp-content/uploads is used + * there, and + * 2) We are not switched, as ms_upload_constants() hardcodes these constants to reflect + * the original blog ID. + * + * Rather than UPLOADS, we actually use BLOGUPLOADDIR if it is set, as it is absolute. + * (And it will be set, see ms_upload_constants().) Otherwise, UPLOADS can be used, as + * as it is relative to ABSPATH. For the final piece: when UPLOADS is used with ms-files + * rewriting in multisite, the resulting URL is /files. (#WP22702 for background.) + */ + + if ( defined( 'BLOGUPLOADDIR' ) ) + $dir = untrailingslashit( BLOGUPLOADDIR ); + else + $dir = ABSPATH . UPLOADS; + $url = trailingslashit( $siteurl ) . 'files'; + } + } + + $basedir = $dir; + $baseurl = $url; + + $subdir = ''; + if ( get_option( 'uploads_use_yearmonth_folders' ) ) { + // Generate the yearly and monthly dirs + if ( !$time ) + $time = current_time( 'mysql' ); + $y = substr( $time, 0, 4 ); + $m = substr( $time, 5, 2 ); + $subdir = "/$y/$m"; + } + + $dir .= $subdir; + $url .= $subdir; + + /** + * Filter the uploads directory data. + * + * @since 2.0.0 + * + * @param array $uploads Array of upload directory data with keys of 'path', + * 'url', 'subdir, 'basedir', and 'error'. + */ + $uploads = apply_filters( 'upload_dir', + array( + 'path' => $dir, + 'url' => $url, + 'subdir' => $subdir, + 'basedir' => $basedir, + 'baseurl' => $baseurl, + 'error' => false, + ) ); + + // Make sure we have an uploads directory. + if ( ! wp_mkdir_p( $uploads['path'] ) ) { + if ( 0 === strpos( $uploads['basedir'], ABSPATH ) ) + $error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir']; + else + $error_path = basename( $uploads['basedir'] ) . $uploads['subdir']; + + $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path ); + $uploads['error'] = $message; + } + + return $uploads; } /** - * Display the robot.txt file content. + * Get a filename that is sanitized and unique for the given directory. * - * The echo content should be with usage of the permalinks or for creating the - * robot.txt file. + * If the filename is not unique, then a number will be added to the filename + * before the extension, and will continue adding numbers until the filename is + * unique. * - * @since 2.1.0 - * @uses do_action() Calls 'do_robotstxt' hook for displaying robot.txt rules. + * The callback is passed three parameters, the first one is the directory, the + * second is the filename, and the third is the extension. + * + * @since 2.5.0 + * + * @param string $dir Directory. + * @param string $filename File name. + * @param callable $unique_filename_callback Callback. Default null. + * @return string New filename, if given wasn't unique. */ -function do_robots() { - header( 'Content-Type: text/plain; charset=utf-8' ); +function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) { + // Sanitize the file name before we begin processing. + $filename = sanitize_file_name($filename); - do_action( 'do_robotstxt' ); + // Separate the filename into a name and extension. + $info = pathinfo($filename); + $ext = !empty($info['extension']) ? '.' . $info['extension'] : ''; + $name = basename($filename, $ext); + + // Edge case: if file is named '.ext', treat as an empty name. + if ( $name === $ext ) + $name = ''; - if ( '0' == get_option( 'blog_public' ) ) { - echo "User-agent: *\n"; - echo "Disallow: /\n"; + /* + * Increment the file number until we have a unique file to save in $dir. + * Use callback if supplied. + */ + if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) { + $filename = call_user_func( $unique_filename_callback, $dir, $name, $ext ); } else { - echo "User-agent: *\n"; - echo "Disallow:\n"; + $number = ''; + + // Change '.ext' to lower case. + if ( $ext && strtolower($ext) != $ext ) { + $ext2 = strtolower($ext); + $filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename ); + + // Check for both lower and upper case extension or image sub-sizes may be overwritten. + while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) { + $new_number = $number + 1; + $filename = str_replace( array( "-$number$ext", "$number$ext" ), "-$new_number$ext", $filename ); + $filename2 = str_replace( array( "-$number$ext2", "$number$ext2" ), "-$new_number$ext2", $filename2 ); + $number = $new_number; + } + return $filename2; + } + + while ( file_exists( $dir . "/$filename" ) ) { + if ( '' == "$number$ext" ) { + $filename = "$filename-" . ++$number; + } else { + $filename = str_replace( array( "-$number$ext", "$number$ext" ), "-" . ++$number . $ext, $filename ); + } + } } + + return $filename; } /** - * Test whether blog is already installed. + * Create a file in the upload folder with given content. * - * The cache will be checked first. If you have a cache plugin, which saves the - * cache values, then this will work. If you use the default WordPress cache, - * and the database goes away, then you might have problems. + * If there is an error, then the key 'error' will exist with the error message. + * If success, then the key 'file' will have the unique file path, the 'url' key + * will have the link to the new file. and the 'error' key will be set to false. + * + * This function will not move an uploaded file to the upload folder. It will + * create a new file with the content in $bits parameter. If you move the upload + * file, read the content of the uploaded file, and then you can give the + * filename and content to this function, which will add it to the upload + * folder. * - * Checks for the option siteurl for whether WordPress is installed. + * The permissions will be set on the new file automatically by this function. * - * @since 2.1.0 - * @uses $wpdb + * @since 2.0.0 * - * @return bool Whether blog is already installed. + * @param string $name Filename. + * @param null|string $deprecated Never used. Set to null. + * @param mixed $bits File content + * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null. + * @return array */ -function is_blog_installed() { - global $wpdb; +function wp_upload_bits( $name, $deprecated, $bits, $time = null ) { + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.0' ); - // Check cache first. If options table goes away and we have true cached, oh well. - if ( wp_cache_get( 'is_blog_installed' ) ) - return true; + if ( empty( $name ) ) + return array( 'error' => __( 'Empty filename' ) ); - $suppress = $wpdb->suppress_errors(); - $alloptions = wp_load_alloptions(); - // If siteurl is not set to autoload, check it specifically - if ( !isset( $alloptions['siteurl'] ) ) - $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" ); - else - $installed = $alloptions['siteurl']; - $wpdb->suppress_errors( $suppress ); + $wp_filetype = wp_check_filetype( $name ); + if ( ! $wp_filetype['ext'] && ! current_user_can( 'unfiltered_upload' ) ) + return array( 'error' => __( 'Invalid file type' ) ); - $installed = !empty( $installed ); - wp_cache_set( 'is_blog_installed', $installed ); + $upload = wp_upload_dir( $time ); - if ( $installed ) - return true; + if ( $upload['error'] !== false ) + return $upload; - $suppress = $wpdb->suppress_errors(); - $tables = $wpdb->get_col('SHOW TABLES'); - $wpdb->suppress_errors( $suppress ); + /** + * Filter whether to treat the upload bits as an error. + * + * Passing a non-array to the filter will effectively short-circuit preparing + * the upload bits, returning that value instead. + * + * @since 3.0.0 + * + * @param mixed $upload_bits_error An array of upload bits data, or a non-array error to return. + */ + $upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) ); + if ( !is_array( $upload_bits_error ) ) { + $upload[ 'error' ] = $upload_bits_error; + return $upload; + } - // Loop over the WP tables. If none exist, then scratch install is allowed. - // If one or more exist, suggest table repair since we got here because the options - // table could not be accessed. - foreach ($wpdb->tables as $table) { - // If one of the WP tables exist, then we are in an insane state. - if ( in_array($wpdb->prefix . $table, $tables) ) { - // If visiting repair.php, return true and let it take over. - if ( defined('WP_REPAIRING') ) - return true; - // Die with a DB error. - $wpdb->error = __('One or more database tables are unavailable. The database may need to be <a href="maint/repair.php?referrer=is_blog_installed">repaired</a>.'); - dead_db(); - } + $filename = wp_unique_filename( $upload['path'], $name ); + + $new_file = $upload['path'] . "/$filename"; + if ( ! wp_mkdir_p( dirname( $new_file ) ) ) { + if ( 0 === strpos( $upload['basedir'], ABSPATH ) ) + $error_path = str_replace( ABSPATH, '', $upload['basedir'] ) . $upload['subdir']; + else + $error_path = basename( $upload['basedir'] ) . $upload['subdir']; + + $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path ); + return array( 'error' => $message ); } - wp_cache_set( 'is_blog_installed', false ); + $ifp = @ fopen( $new_file, 'wb' ); + if ( ! $ifp ) + return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) ); - return false; + @fwrite( $ifp, $bits ); + fclose( $ifp ); + clearstatcache(); + + // Set correct file permissions + $stat = @ stat( dirname( $new_file ) ); + $perms = $stat['mode'] & 0007777; + $perms = $perms & 0000666; + @ chmod( $new_file, $perms ); + clearstatcache(); + + // Compute the URL + $url = $upload['url'] . "/$filename"; + + /** This filter is documented in wp-admin/includes/file.php */ + return apply_filters( 'wp_handle_upload', array( 'file' => $new_file, 'url' => $url, 'type' => $wp_filetype['type'], 'error' => false ), 'sideload' ); } /** - * Retrieve URL with nonce added to URL query. + * Retrieve the file type based on the extension name. * - * @package WordPress - * @subpackage Security - * @since 2.0.4 + * @since 2.5.0 * - * @param string $actionurl URL to add nonce action - * @param string $action Optional. Nonce action name - * @return string URL with nonce action added. + * @param string $ext The extension to search. + * @return string|void The file type, example: audio, video, document, spreadsheet, etc. */ -function wp_nonce_url( $actionurl, $action = -1 ) { - $actionurl = str_replace( '&', '&', $actionurl ); - return esc_html( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) ); +function wp_ext2type( $ext ) { + $ext = strtolower( $ext ); + + /** + * Filter file type based on the extension name. + * + * @since 2.5.0 + * + * @see wp_ext2type() + * + * @param array $ext2type Multi-dimensional array with extensions for a default set + * of file types. + */ + $ext2type = apply_filters( 'ext2type', array( + 'image' => array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'tif', 'tiff', 'ico' ), + 'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ), + 'video' => array( '3g2', '3gp', '3gpp', 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ), + 'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'xps', 'oxps', 'rtf', 'wp', 'wpd', 'psd', 'xcf' ), + 'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsm', 'xlsb' ), + 'interactive' => array( 'swf', 'key', 'ppt', 'pptx', 'pptm', 'pps', 'ppsx', 'ppsm', 'sldx', 'sldm', 'odp' ), + 'text' => array( 'asc', 'csv', 'tsv', 'txt' ), + 'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip', '7z' ), + 'code' => array( 'css', 'htm', 'html', 'php', 'js' ), + ) ); + + foreach ( $ext2type as $type => $exts ) + if ( in_array( $ext, $exts ) ) + return $type; } /** - * Retrieve or display nonce hidden field for forms. + * Retrieve the file type from the file name. * - * The nonce field is used to validate that the contents of the form came from - * the location on the current site and not somewhere else. The nonce does not - * offer absolute protection, but should protect against most cases. It is very - * important to use nonce field in forms. + * You can optionally define the mime array, if needed. * - * If you set $echo to true and set $referer to true, then you will need to - * retrieve the {@link wp_referer_field() wp referer field}. If you have the - * $referer set to true and are echoing the nonce field, it will also echo the - * referer field. + * @since 2.0.4 * - * The $action and $name are optional, but if you want to have better security, - * it is strongly suggested to set those two parameters. It is easier to just - * call the function without any parameters, because validation of the nonce - * doesn't require any parameters, but since crackers know what the default is - * it won't be difficult for them to find a way around your nonce and cause - * damage. - * - * The input name will be whatever $name value you gave. The input value will be - * the nonce creation value. - * - * @package WordPress - * @subpackage Security - * @since 2.0.4 - * - * @param string $action Optional. Action name. - * @param string $name Optional. Nonce name. - * @param bool $referer Optional, default true. Whether to set the referer field for validation. - * @param bool $echo Optional, default true. Whether to display or return hidden form field. - * @return string Nonce field. + * @param string $filename File name or path. + * @param array $mimes Optional. Key is the file extension with value as the mime type. + * @return array Values with extension first and mime type. */ -function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) { - $name = esc_attr( $name ); - $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />'; - if ( $echo ) - echo $nonce_field; +function wp_check_filetype( $filename, $mimes = null ) { + if ( empty($mimes) ) + $mimes = get_allowed_mime_types(); + $type = false; + $ext = false; - if ( $referer ) - wp_referer_field( $echo, 'previous' ); + foreach ( $mimes as $ext_preg => $mime_match ) { + $ext_preg = '!\.(' . $ext_preg . ')$!i'; + if ( preg_match( $ext_preg, $filename, $ext_matches ) ) { + $type = $mime_match; + $ext = $ext_matches[1]; + break; + } + } - return $nonce_field; + return compact( 'ext', 'type' ); } /** - * Retrieve or display referer hidden field for forms. + * Attempt to determine the real file type of a file. * - * The referer link is the current Request URI from the server super global. The - * input name is '_wp_http_referer', in case you wanted to check manually. + * If unable to, the file name extension will be used to determine type. * - * @package WordPress - * @subpackage Security - * @since 2.0.4 + * If it's determined that the extension does not match the file's real type, + * then the "proper_filename" value will be set with a proper filename and extension. * - * @param bool $echo Whether to echo or return the referer field. - * @return string Referer field. + * Currently this function only supports validating images known to getimagesize(). + * + * @since 3.0.0 + * + * @param string $file Full path to the file. + * @param string $filename The name of the file (may differ from $file due to $file being + * in a tmp directory). + * @param array $mimes Optional. Key is the file extension with value as the mime type. + * @return array Values for the extension, MIME, and either a corrected filename or false + * if original $filename is valid. */ -function wp_referer_field( $echo = true) { - $ref = esc_attr( $_SERVER['REQUEST_URI'] ); - $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />'; +function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) { + $proper_filename = false; - if ( $echo ) - echo $referer_field; - return $referer_field; + // Do basic extension validation and MIME mapping + $wp_filetype = wp_check_filetype( $filename, $mimes ); + $ext = $wp_filetype['ext']; + $type = $wp_filetype['type']; + + // We can't do any further validation without a file to work with + if ( ! file_exists( $file ) ) { + return compact( 'ext', 'type', 'proper_filename' ); + } + + // We're able to validate images using GD + if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) { + + // Attempt to figure out what type of image it actually is + $imgstats = @getimagesize( $file ); + + // If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME + if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) { + /** + * Filter the list mapping image mime types to their respective extensions. + * + * @since 3.0.0 + * + * @param array $mime_to_ext Array of image mime types and their matching extensions. + */ + $mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array( + 'image/jpeg' => 'jpg', + 'image/png' => 'png', + 'image/gif' => 'gif', + 'image/bmp' => 'bmp', + 'image/tiff' => 'tif', + ) ); + + // Replace whatever is after the last period in the filename with the correct extension + if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) { + $filename_parts = explode( '.', $filename ); + array_pop( $filename_parts ); + $filename_parts[] = $mime_to_ext[ $imgstats['mime'] ]; + $new_filename = implode( '.', $filename_parts ); + + if ( $new_filename != $filename ) { + $proper_filename = $new_filename; // Mark that it changed + } + // Redefine the extension / MIME + $wp_filetype = wp_check_filetype( $new_filename, $mimes ); + $ext = $wp_filetype['ext']; + $type = $wp_filetype['type']; + } + } + } + + /** + * Filter the "real" file type of the given file. + * + * @since 3.0.0 + * + * @param array $wp_check_filetype_and_ext File data array containing 'ext', 'type', and + * 'proper_filename' keys. + * @param string $file Full path to the file. + * @param string $filename The name of the file (may differ from $file due to + * $file being in a tmp directory). + * @param array $mimes Key is the file extension with value as the mime type. + */ + return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes ); } /** - * Retrieve or display original referer hidden field for forms. - * - * The input name is '_wp_original_http_referer' and will be either the same - * value of {@link wp_referer_field()}, if that was posted already or it will - * be the current page, if it doesn't exist. + * Retrieve list of mime types and file extensions. * - * @package WordPress - * @subpackage Security - * @since 2.0.4 + * @since 3.5.0 + * @since 4.2.0 Support was added for GIMP (xcf) files. * - * @param bool $echo Whether to echo the original http referer - * @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to. - * @return string Original referer field. + * @return array Array of mime types keyed by the file extension regex corresponding to those types. */ -function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) { - $jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI']; - $ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to; - $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />'; - if ( $echo ) - echo $orig_referer_field; - return $orig_referer_field; +function wp_get_mime_types() { + /** + * Filter the list of mime types and file extensions. + * + * This filter should be used to add, not remove, mime types. To remove + * mime types, use the 'upload_mimes' filter. + * + * @since 3.5.0 + * + * @param array $wp_get_mime_types Mime types keyed by the file extension regex + * corresponding to those types. + */ + return apply_filters( 'mime_types', array( + // Image formats. + 'jpg|jpeg|jpe' => 'image/jpeg', + 'gif' => 'image/gif', + 'png' => 'image/png', + 'bmp' => 'image/bmp', + 'tiff|tif' => 'image/tiff', + 'ico' => 'image/x-icon', + // Video formats. + 'asf|asx' => 'video/x-ms-asf', + 'wmv' => 'video/x-ms-wmv', + 'wmx' => 'video/x-ms-wmx', + 'wm' => 'video/x-ms-wm', + 'avi' => 'video/avi', + 'divx' => 'video/divx', + 'flv' => 'video/x-flv', + 'mov|qt' => 'video/quicktime', + 'mpeg|mpg|mpe' => 'video/mpeg', + 'mp4|m4v' => 'video/mp4', + 'ogv' => 'video/ogg', + 'webm' => 'video/webm', + 'mkv' => 'video/x-matroska', + '3gp|3gpp' => 'video/3gpp', // Can also be audio + '3g2|3gp2' => 'video/3gpp2', // Can also be audio + // Text formats. + 'txt|asc|c|cc|h|srt' => 'text/plain', + 'csv' => 'text/csv', + 'tsv' => 'text/tab-separated-values', + 'ics' => 'text/calendar', + 'rtx' => 'text/richtext', + 'css' => 'text/css', + 'htm|html' => 'text/html', + 'vtt' => 'text/vtt', + 'dfxp' => 'application/ttaf+xml', + // Audio formats. + 'mp3|m4a|m4b' => 'audio/mpeg', + 'ra|ram' => 'audio/x-realaudio', + 'wav' => 'audio/wav', + 'ogg|oga' => 'audio/ogg', + 'mid|midi' => 'audio/midi', + 'wma' => 'audio/x-ms-wma', + 'wax' => 'audio/x-ms-wax', + 'mka' => 'audio/x-matroska', + // Misc application formats. + 'rtf' => 'application/rtf', + 'js' => 'application/javascript', + 'pdf' => 'application/pdf', + 'swf' => 'application/x-shockwave-flash', + 'class' => 'application/java', + 'tar' => 'application/x-tar', + 'zip' => 'application/zip', + 'gz|gzip' => 'application/x-gzip', + 'rar' => 'application/rar', + '7z' => 'application/x-7z-compressed', + 'exe' => 'application/x-msdownload', + 'psd' => 'application/octet-stream', + 'xcf' => 'application/octet-stream', + // MS Office formats. + 'doc' => 'application/msword', + 'pot|pps|ppt' => 'application/vnd.ms-powerpoint', + 'wri' => 'application/vnd.ms-write', + 'xla|xls|xlt|xlw' => 'application/vnd.ms-excel', + 'mdb' => 'application/vnd.ms-access', + 'mpp' => 'application/vnd.ms-project', + 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', + 'docm' => 'application/vnd.ms-word.document.macroEnabled.12', + 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template', + 'dotm' => 'application/vnd.ms-word.template.macroEnabled.12', + 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', + 'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12', + 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12', + 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template', + 'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12', + 'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12', + 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', + 'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12', + 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow', + 'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12', + 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template', + 'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12', + 'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12', + 'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide', + 'sldm' => 'application/vnd.ms-powerpoint.slide.macroEnabled.12', + 'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote', + 'oxps' => 'application/oxps', + 'xps' => 'application/vnd.ms-xpsdocument', + // OpenOffice formats. + 'odt' => 'application/vnd.oasis.opendocument.text', + 'odp' => 'application/vnd.oasis.opendocument.presentation', + 'ods' => 'application/vnd.oasis.opendocument.spreadsheet', + 'odg' => 'application/vnd.oasis.opendocument.graphics', + 'odc' => 'application/vnd.oasis.opendocument.chart', + 'odb' => 'application/vnd.oasis.opendocument.database', + 'odf' => 'application/vnd.oasis.opendocument.formula', + // WordPerfect formats. + 'wp|wpd' => 'application/wordperfect', + // iWork formats. + 'key' => 'application/vnd.apple.keynote', + 'numbers' => 'application/vnd.apple.numbers', + 'pages' => 'application/vnd.apple.pages', + ) ); } - /** - * Retrieve referer from '_wp_http_referer', HTTP referer, or current page respectively. + * Retrieve list of allowed mime types and file extensions. * - * @package WordPress - * @subpackage Security - * @since 2.0.4 + * @since 2.8.6 * - * @return string|bool False on failure. Referer URL on success. + * @param int|WP_User $user Optional. User to check. Defaults to current user. + * @return array Array of mime types keyed by the file extension regex corresponding + * to those types. */ -function wp_get_referer() { - $ref = ''; - if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) - $ref = $_REQUEST['_wp_http_referer']; - else if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) - $ref = $_SERVER['HTTP_REFERER']; - - if ( $ref !== $_SERVER['REQUEST_URI'] ) - return $ref; - return false; +function get_allowed_mime_types( $user = null ) { + $t = wp_get_mime_types(); + + unset( $t['swf'], $t['exe'] ); + if ( function_exists( 'current_user_can' ) ) + $unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' ); + + if ( empty( $unfiltered ) ) + unset( $t['htm|html'] ); + + /** + * Filter list of allowed mime types and file extensions. + * + * @since 2.0.0 + * + * @param array $t Mime types keyed by the file extension regex corresponding to + * those types. 'swf' and 'exe' removed from full list. 'htm|html' also + * removed depending on '$user' capabilities. + * @param int|WP_User|null $user User ID, User object or null if not provided (indicates current user). + */ + return apply_filters( 'upload_mimes', $t, $user ); } /** - * Retrieve original referer that was posted, if it exists. + * Display "Are You Sure" message to confirm the action being taken. + * + * If the action has the nonce explain message, then it will be displayed + * along with the "Are you sure?" message. * - * @package WordPress - * @subpackage Security * @since 2.0.4 * - * @return string|bool False if no original referer or original referer if set. + * @param string $action The nonce action. */ -function wp_get_original_referer() { - if ( !empty( $_REQUEST['_wp_original_http_referer'] ) ) - return $_REQUEST['_wp_original_http_referer']; - return false; +function wp_nonce_ays( $action ) { + if ( 'log-out' == $action ) { + $html = sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'name' ) ) . '</p><p>'; + $redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : ''; + $html .= sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url( $redirect_to ) ); + } else { + $html = __( 'Are you sure you want to do this?' ); + if ( wp_get_referer() ) + $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>"; + } + + wp_die( $html, __( 'WordPress Failure Notice' ), 403 ); } /** - * Recursive directory creation based on full path. + * Kill WordPress execution and display HTML message with error message. * - * Will attempt to set permissions on folders. + * This function complements the `die()` PHP function. The difference is that + * HTML will be displayed to the user. It is recommended to use this function + * only when the execution should not continue any further. It is not recommended + * to call this function very often, and try to handle as many errors as possible + * silently or more gracefully. * - * @since 2.0.1 + * As a shorthand, the desired HTTP response code may be passed as an integer to + * the `$title` parameter (the default title would apply) or the `$args` parameter. * - * @param string $target Full path to attempt to create. - * @return bool Whether the path was created or not. True if path already exists. + * @since 2.0.4 + * @since 4.1.0 The `$title` and `$args` parameters were changed to optionally accept + * an integer to be used as the response code. + * + * @param string|WP_Error $message Optional. Error message. If this is a {@see WP_Error} object, + * the error's messages are used. Default empty. + * @param string|int $title Optional. Error title. If `$message` is a `WP_Error` object, + * error data with the key 'title' may be used to specify the title. + * If `$title` is an integer, then it is treated as the response + * code. Default empty. + * @param string|array|int $args { + * Optional. Arguments to control behavior. If `$args` is an integer, then it is treated + * as the response code. Default empty array. + * + * @type int $response The HTTP response code. Default 500. + * @type bool $back_link Whether to include a link to go back. Default false. + * @type string $text_direction The text direction. This is only useful internally, when WordPress + * is still loading and the site's locale is not set up yet. Accepts 'rtl'. + * Default is the value of {@see is_rtl()}. + * } */ -function wp_mkdir_p( $target ) { - // from php.net/mkdir user contributed notes - $target = str_replace( '//', '/', $target ); - if ( file_exists( $target ) ) - return @is_dir( $target ); +function wp_die( $message = '', $title = '', $args = array() ) { - // Attempting to create the directory may clutter up our display. - if ( @mkdir( $target ) ) { - $stat = @stat( dirname( $target ) ); - $dir_perms = $stat['mode'] & 0007777; // Get the permission bits. - @chmod( $target, $dir_perms ); - return true; - } elseif ( is_dir( dirname( $target ) ) ) { - return false; + if ( is_int( $args ) ) { + $args = array( 'response' => $args ); + } elseif ( is_int( $title ) ) { + $args = array( 'response' => $title ); + $title = ''; } - // If the above failed, attempt to create the parent node, then try again. - if ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) ) - return wp_mkdir_p( $target ); + if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) { + /** + * Filter callback for killing WordPress execution for AJAX requests. + * + * @since 3.4.0 + * + * @param callable $function Callback function name. + */ + $function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' ); + } elseif ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) { + /** + * Filter callback for killing WordPress execution for XML-RPC requests. + * + * @since 3.4.0 + * + * @param callable $function Callback function name. + */ + $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); + } else { + /** + * Filter callback for killing WordPress execution for all non-AJAX, non-XML-RPC requests. + * + * @since 3.0.0 + * + * @param callable $function Callback function name. + */ + $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); + } - return false; + call_user_func( $function, $message, $title, $args ); } /** - * Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows'). + * Kill WordPress execution and display HTML message with error message. * - * @since 2.5.0 + * This is the default handler for wp_die if you want a custom one for your + * site then you can overload using the wp_die_handler filter in wp_die * - * @param string $path File path - * @return bool True if path is absolute, false is not absolute. + * @since 3.0.0 + * @access private + * + * @param string $message Error message. + * @param string $title Optional. Error title. Default empty. + * @param string|array $args Optional. Arguments to control behavior. Default empty array. */ -function path_is_absolute( $path ) { - // this is definitive if true but fails if $path does not exist or contains a symbolic link - if ( realpath($path) == $path ) - return true; +function _default_wp_die_handler( $message, $title = '', $args = array() ) { + $defaults = array( 'response' => 500 ); + $r = wp_parse_args($args, $defaults); - if ( strlen($path) == 0 || $path{0} == '.' ) - return false; + $have_gettext = function_exists('__'); - // windows allows absolute paths like this - if ( preg_match('#^[a-zA-Z]:\\\\#', $path) ) - return true; + if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) { + if ( empty( $title ) ) { + $error_data = $message->get_error_data(); + if ( is_array( $error_data ) && isset( $error_data['title'] ) ) + $title = $error_data['title']; + } + $errors = $message->get_error_messages(); + switch ( count( $errors ) ) { + case 0 : + $message = ''; + break; + case 1 : + $message = "<p>{$errors[0]}</p>"; + break; + default : + $message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>"; + break; + } + } elseif ( is_string( $message ) ) { + $message = "<p>$message</p>"; + } + + if ( isset( $r['back_link'] ) && $r['back_link'] ) { + $back_text = $have_gettext? __('« Back') : '« Back'; + $message .= "\n<p><a href='javascript:history.back()'>$back_text</a></p>"; + } + + if ( ! did_action( 'admin_head' ) ) : + if ( !headers_sent() ) { + status_header( $r['response'] ); + nocache_headers(); + header( 'Content-Type: text/html; charset=utf-8' ); + } + + if ( empty($title) ) + $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error'; + + $text_direction = 'ltr'; + if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] ) + $text_direction = 'rtl'; + elseif ( function_exists( 'is_rtl' ) && is_rtl() ) + $text_direction = 'rtl'; +?> +<!DOCTYPE html> +<!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono +--> +<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>> +<head> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> + <meta name="viewport" content="width=device-width"> + <title><?php echo $title ?> + + + + + + + + 500 ); - return rtrim($base, '/') . '/' . ltrim($path, '/'); + $r = wp_parse_args($args, $defaults); + + if ( $wp_xmlrpc_server ) { + $error = new IXR_Error( $r['response'] , $message); + $wp_xmlrpc_server->output( $error->getXml() ); + } + die(); } /** - * Get an array containing the current upload directory's path and url. + * Kill WordPress ajax execution. * - * Checks the 'upload_path' option, which should be from the web root folder, - * and if it isn't empty it will be used. If it is empty, then the path will be - * 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will - * override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path. + * This is the handler for wp_die when processing Ajax requests. * - * The upload URL path is set either by the 'upload_url_path' option or by using - * the 'WP_CONTENT_URL' constant and appending '/uploads' to the path. + * @since 3.4.0 + * @access private * - * If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in - * the administration settings panel), then the time will be used. The format - * will be year first and then month. + * @param string $message Optional. Response to print. Default empty. + */ +function _ajax_wp_die_handler( $message = '' ) { + if ( is_scalar( $message ) ) + die( (string) $message ); + die( '0' ); +} + +/** + * Kill WordPress execution. * - * If the path couldn't be created, then an error will be returned with the key - * 'error' containing the error message. The error suggests that the parent - * directory is not writable by the server. + * This is the handler for wp_die when processing APP requests. * - * On success, the returned array will have many indices: - * 'path' - base directory and sub directory or full path to upload directory. - * 'url' - base url and sub directory or absolute URL to upload directory. - * 'subdir' - sub directory if uploads use year/month folders option is on. - * 'basedir' - path without subdir. - * 'baseurl' - URL path without subdir. - * 'error' - set to false. + * @since 3.4.0 + * @access private * - * @since 2.0.0 - * @uses apply_filters() Calls 'upload_dir' on returned array. + * @param string $message Optional. Response to print. Default empty. + */ +function _scalar_wp_die_handler( $message = '' ) { + if ( is_scalar( $message ) ) + die( (string) $message ); + die(); +} + +/** + * Encode a variable into JSON, with some sanity checks. * - * @param string $time Optional. Time formatted in 'yyyy/mm'. - * @return array See above for description. + * @since 4.1.0 + * + * @param mixed $data Variable (usually an array or object) to encode as JSON. + * @param int $options Optional. Options to be passed to json_encode(). Default 0. + * @param int $depth Optional. Maximum depth to walk through $data. Must be + * greater than 0. Default 512. + * @return string|false The JSON encoded string, or false if it cannot be encoded. */ -function wp_upload_dir( $time = null ) { - $siteurl = get_option( 'siteurl' ); - $upload_path = get_option( 'upload_path' ); - $upload_path = trim($upload_path); - if ( empty($upload_path) ) { - $dir = WP_CONTENT_DIR . '/uploads'; +function wp_json_encode( $data, $options = 0, $depth = 512 ) { + /* + * json_encode() has had extra params added over the years. + * $options was added in 5.3, and $depth in 5.5. + * We need to make sure we call it with the correct arguments. + */ + if ( version_compare( PHP_VERSION, '5.5', '>=' ) ) { + $args = array( $data, $options, $depth ); + } elseif ( version_compare( PHP_VERSION, '5.3', '>=' ) ) { + $args = array( $data, $options ); } else { - $dir = $upload_path; - if ( 'wp-content/uploads' == $upload_path ) { - $dir = WP_CONTENT_DIR . '/uploads'; - } elseif ( 0 !== strpos($dir, ABSPATH) ) { - // $dir is absolute, $upload_path is (maybe) relative to ABSPATH - $dir = path_join( ABSPATH, $dir ); - } - } - - if ( !$url = get_option( 'upload_url_path' ) ) { - if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) ) - $url = WP_CONTENT_URL . '/uploads'; - else - $url = trailingslashit( $siteurl ) . $upload_path; + $args = array( $data ); } - if ( defined('UPLOADS') ) { - $dir = ABSPATH . UPLOADS; - $url = trailingslashit( $siteurl ) . UPLOADS; - } + // Prepare the data for JSON serialization. + $data = _wp_json_prepare_data( $data ); - $bdir = $dir; - $burl = $url; + $json = @call_user_func_array( 'json_encode', $args ); - $subdir = ''; - if ( get_option( 'uploads_use_yearmonth_folders' ) ) { - // Generate the yearly and monthly dirs - if ( !$time ) - $time = current_time( 'mysql' ); - $y = substr( $time, 0, 4 ); - $m = substr( $time, 5, 2 ); - $subdir = "/$y/$m"; + // If json_encode() was successful, no need to do more sanity checking. + // ... unless we're in an old version of PHP, and json_encode() returned + // a string containing 'null'. Then we need to do more sanity checking. + if ( false !== $json && ( version_compare( PHP_VERSION, '5.5', '>=' ) || false === strpos( $json, 'null' ) ) ) { + return $json; } - $dir .= $subdir; - $url .= $subdir; - - $uploads = apply_filters( 'upload_dir', array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $bdir, 'baseurl' => $burl, 'error' => false ) ); - - // Make sure we have an uploads dir - if ( ! wp_mkdir_p( $uploads['path'] ) ) { - $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] ); - return array( 'error' => $message ); + try { + $args[0] = _wp_json_sanity_check( $data, $depth ); + } catch ( Exception $e ) { + return false; } - return $uploads; + return call_user_func_array( 'json_encode', $args ); } /** - * Get a filename that is sanitized and unique for the given directory. - * - * If the filename is not unique, then a number will be added to the filename - * before the extension, and will continue adding numbers until the filename is - * unique. + * Perform sanity checks on data that shall be encoded to JSON. * - * The callback must accept two parameters, the first one is the directory and - * the second is the filename. The callback must be a function. + * @ignore + * @since 4.1.0 + * @access private * - * @since 2.5 + * @see wp_json_encode() * - * @param string $dir - * @param string $filename - * @param string $unique_filename_callback Function name, must be a function. - * @return string New filename, if given wasn't unique. + * @param mixed $data Variable (usually an array or object) to encode as JSON. + * @param int $depth Maximum depth to walk through $data. Must be greater than 0. + * @return mixed The sanitized data that shall be encoded to JSON. */ -function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) { - // sanitize the file name before we begin processing - $filename = sanitize_file_name($filename); - - // separate the filename into a name and extension - $info = pathinfo($filename); - $ext = !empty($info['extension']) ? '.' . $info['extension'] : ''; - $name = basename($filename, $ext); - - // edge case: if file is named '.ext', treat as an empty name - if( $name === $ext ) - $name = ''; - - // Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied. - if ( $unique_filename_callback && function_exists( $unique_filename_callback ) ) { - $filename = $unique_filename_callback( $dir, $name ); - } else { - $number = ''; +function _wp_json_sanity_check( $data, $depth ) { + if ( $depth < 0 ) { + throw new Exception( 'Reached depth limit' ); + } - // change '.ext' to lower case - if ( $ext && strtolower($ext) != $ext ) { - $ext2 = strtolower($ext); - $filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename ); + if ( is_array( $data ) ) { + $output = array(); + foreach ( $data as $id => $el ) { + // Don't forget to sanitize the ID! + if ( is_string( $id ) ) { + $clean_id = _wp_json_convert_string( $id ); + } else { + $clean_id = $id; + } - // check for both lower and upper case extension or image sub-sizes may be overwritten - while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) { - $new_number = $number + 1; - $filename = str_replace( "$number$ext", "$new_number$ext", $filename ); - $filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 ); - $number = $new_number; + // Check the element type, so that we're only recursing if we really have to. + if ( is_array( $el ) || is_object( $el ) ) { + $output[ $clean_id ] = _wp_json_sanity_check( $el, $depth - 1 ); + } elseif ( is_string( $el ) ) { + $output[ $clean_id ] = _wp_json_convert_string( $el ); + } else { + $output[ $clean_id ] = $el; } - return $filename2; } + } elseif ( is_object( $data ) ) { + $output = new stdClass; + foreach ( $data as $id => $el ) { + if ( is_string( $id ) ) { + $clean_id = _wp_json_convert_string( $id ); + } else { + $clean_id = $id; + } - while ( file_exists( $dir . "/$filename" ) ) { - if ( '' == "$number$ext" ) - $filename = $filename . ++$number . $ext; - else - $filename = str_replace( "$number$ext", ++$number . $ext, $filename ); + if ( is_array( $el ) || is_object( $el ) ) { + $output->$clean_id = _wp_json_sanity_check( $el, $depth - 1 ); + } elseif ( is_string( $el ) ) { + $output->$clean_id = _wp_json_convert_string( $el ); + } else { + $output->$clean_id = $el; + } } + } elseif ( is_string( $data ) ) { + return _wp_json_convert_string( $data ); + } else { + return $data; } - return $filename; + return $output; } /** - * Create a file in the upload folder with given content. - * - * If there is an error, then the key 'error' will exist with the error message. - * If success, then the key 'file' will have the unique file path, the 'url' key - * will have the link to the new file. and the 'error' key will be set to false. + * Convert a string to UTF-8, so that it can be safely encoded to JSON. * - * This function will not move an uploaded file to the upload folder. It will - * create a new file with the content in $bits parameter. If you move the upload - * file, read the content of the uploaded file, and then you can give the - * filename and content to this function, which will add it to the upload - * folder. + * @ignore + * @since 4.1.0 + * @access private * - * The permissions will be set on the new file automatically by this function. + * @see _wp_json_sanity_check() * - * @since 2.0.0 + * @staticvar bool $use_mb * - * @param string $name - * @param null $deprecated Not used. Set to null. - * @param mixed $bits File content - * @param string $time Optional. Time formatted in 'yyyy/mm'. - * @return array + * @param string $string The string which is to be converted. + * @return string The checked string. */ -function wp_upload_bits( $name, $deprecated, $bits, $time = null ) { - if ( empty( $name ) ) - return array( 'error' => __( 'Empty filename' ) ); - - $wp_filetype = wp_check_filetype( $name ); - if ( !$wp_filetype['ext'] ) - return array( 'error' => __( 'Invalid file type' ) ); - - $upload = wp_upload_dir( $time ); - - if ( $upload['error'] !== false ) - return $upload; - - $filename = wp_unique_filename( $upload['path'], $name ); - - $new_file = $upload['path'] . "/$filename"; - if ( ! wp_mkdir_p( dirname( $new_file ) ) ) { - $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) ); - return array( 'error' => $message ); +function _wp_json_convert_string( $string ) { + static $use_mb = null; + if ( is_null( $use_mb ) ) { + $use_mb = function_exists( 'mb_convert_encoding' ); } - $ifp = @ fopen( $new_file, 'wb' ); - if ( ! $ifp ) - return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) ); - - @fwrite( $ifp, $bits ); - fclose( $ifp ); - // Set correct file permissions - $stat = @ stat( dirname( $new_file ) ); - $perms = $stat['mode'] & 0007777; - $perms = $perms & 0000666; - @ chmod( $new_file, $perms ); - - // Compute the URL - $url = $upload['url'] . "/$filename"; - - return array( 'file' => $new_file, 'url' => $url, 'error' => false ); -} - -/** - * Retrieve the file type based on the extension name. - * - * @package WordPress - * @since 2.5.0 - * @uses apply_filters() Calls 'ext2type' hook on default supported types. - * - * @param string $ext The extension to search. - * @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found. - */ -function wp_ext2type( $ext ) { - $ext2type = apply_filters('ext2type', array( - 'audio' => array('aac','ac3','aif','aiff','mp1','mp2','mp3','m3a','m4a','m4b','ogg','ram','wav','wma'), - 'video' => array('asf','avi','divx','dv','mov','mpg','mpeg','mp4','mpv','ogm','qt','rm','vob','wmv', 'm4v'), - 'document' => array('doc','docx','pages','odt','rtf','pdf'), - 'spreadsheet' => array('xls','xlsx','numbers','ods'), - 'interactive' => array('ppt','pptx','key','odp','swf'), - 'text' => array('txt'), - 'archive' => array('tar','bz2','gz','cab','dmg','rar','sea','sit','sqx','zip'), - 'code' => array('css','html','php','js'), - )); - foreach ( $ext2type as $type => $exts ) - if ( in_array($ext, $exts) ) - return $type; -} - -/** - * Retrieve the file type from the file name. - * - * You can optionally define the mime array, if needed. - * - * @since 2.0.4 - * - * @param string $filename File name or path. - * @param array $mimes Optional. Key is the file extension with value as the mime type. - * @return array Values with extension first and mime type. - */ -function wp_check_filetype( $filename, $mimes = null ) { - if ( empty($mimes) ) - $mimes = get_allowed_mime_types(); - $type = false; - $ext = false; - - foreach ( $mimes as $ext_preg => $mime_match ) { - $ext_preg = '!\.(' . $ext_preg . ')$!i'; - if ( preg_match( $ext_preg, $filename, $ext_matches ) ) { - $type = $mime_match; - $ext = $ext_matches[1]; - break; + if ( $use_mb ) { + $encoding = mb_detect_encoding( $string, mb_detect_order(), true ); + if ( $encoding ) { + return mb_convert_encoding( $string, 'UTF-8', $encoding ); + } else { + return mb_convert_encoding( $string, 'UTF-8', 'UTF-8' ); } + } else { + return wp_check_invalid_utf8( $string, true ); } - - return compact( 'ext', 'type' ); } /** - * Retrieve list of allowed mime types and file extensions. + * Prepares response data to be serialized to JSON. * - * @since 2.8.6 + * This supports the JsonSerializable interface for PHP 5.2-5.3 as well. * - * @return array Array of mime types keyed by the file extension regex corresponding to those types. + * @ignore + * @since 4.4.0 + * @access private + * + * @param mixed $data Native representation. + * @return bool|int|float|null|string|array Data ready for `json_encode()`. */ -function get_allowed_mime_types() { - static $mimes = false; - - if ( !$mimes ) { - // Accepted MIME types are set here as PCRE unless provided. - $mimes = apply_filters( 'upload_mimes', array( - 'jpg|jpeg|jpe' => 'image/jpeg', - 'gif' => 'image/gif', - 'png' => 'image/png', - 'bmp' => 'image/bmp', - 'tif|tiff' => 'image/tiff', - 'ico' => 'image/x-icon', - 'asf|asx|wax|wmv|wmx' => 'video/asf', - 'avi' => 'video/avi', - 'divx' => 'video/divx', - 'flv' => 'video/x-flv', - 'mov|qt' => 'video/quicktime', - 'mpeg|mpg|mpe' => 'video/mpeg', - 'txt|c|cc|h' => 'text/plain', - 'rtx' => 'text/richtext', - 'css' => 'text/css', - 'htm|html' => 'text/html', - 'mp3|m4a' => 'audio/mpeg', - 'mp4|m4v' => 'video/mp4', - 'ra|ram' => 'audio/x-realaudio', - 'wav' => 'audio/wav', - 'ogg' => 'audio/ogg', - 'mid|midi' => 'audio/midi', - 'wma' => 'audio/wma', - 'rtf' => 'application/rtf', - 'js' => 'application/javascript', - 'pdf' => 'application/pdf', - 'doc|docx' => 'application/msword', - 'pot|pps|ppt|pptx' => 'application/vnd.ms-powerpoint', - 'wri' => 'application/vnd.ms-write', - 'xla|xls|xlsx|xlt|xlw' => 'application/vnd.ms-excel', - 'mdb' => 'application/vnd.ms-access', - 'mpp' => 'application/vnd.ms-project', - 'swf' => 'application/x-shockwave-flash', - 'class' => 'application/java', - 'tar' => 'application/x-tar', - 'zip' => 'application/zip', - 'gz|gzip' => 'application/x-gzip', - 'exe' => 'application/x-msdownload', - // openoffice formats - 'odt' => 'application/vnd.oasis.opendocument.text', - 'odp' => 'application/vnd.oasis.opendocument.presentation', - 'ods' => 'application/vnd.oasis.opendocument.spreadsheet', - 'odg' => 'application/vnd.oasis.opendocument.graphics', - 'odc' => 'application/vnd.oasis.opendocument.chart', - 'odb' => 'application/vnd.oasis.opendocument.database', - 'odf' => 'application/vnd.oasis.opendocument.formula', - ) ); +function _wp_json_prepare_data( $data ) { + if ( ! defined( 'WP_JSON_SERIALIZE_COMPATIBLE' ) || WP_JSON_SERIALIZE_COMPATIBLE === false ) { + return $data; } - return $mimes; -} + switch ( gettype( $data ) ) { + case 'boolean': + case 'integer': + case 'double': + case 'string': + case 'NULL': + // These values can be passed through. + return $data; + + case 'array': + // Arrays must be mapped in case they also return objects. + return array_map( '_wp_json_prepare_data', $data ); + + case 'object': + // If this is an incomplete object (__PHP_Incomplete_Class), bail. + if ( ! is_object( $data ) ) { + return null; + } -/** - * Retrieve nonce action "Are you sure" message. - * - * The action is split by verb and noun. The action format is as follows: - * verb-action_extra. The verb is before the first dash and has the format of - * letters and no spaces and numbers. The noun is after the dash and before the - * underscore, if an underscore exists. The noun is also only letters. - * - * The filter will be called for any action, which is not defined by WordPress. - * You may use the filter for your plugin to explain nonce actions to the user, - * when they get the "Are you sure?" message. The filter is in the format of - * 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the - * $noun replaced by the found noun. The two parameters that are given to the - * hook are the localized "Are you sure you want to do this?" message with the - * extra text (the text after the underscore). - * - * @package WordPress - * @subpackage Security - * @since 2.0.4 - * - * @param string $action Nonce action. - * @return string Are you sure message. - */ -function wp_explain_nonce( $action ) { - if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) { - $verb = $matches[1]; - $noun = $matches[2]; - - $trans = array(); - $trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: “%s” has failed.' ), 'get_the_title' ); - - $trans['add']['category'] = array( __( 'Your attempt to add this category has failed.' ), false ); - $trans['delete']['category'] = array( __( 'Your attempt to delete this category: “%s” has failed.' ), 'get_cat_name' ); - $trans['update']['category'] = array( __( 'Your attempt to edit this category: “%s” has failed.' ), 'get_cat_name' ); - - $trans['delete']['comment'] = array( __( 'Your attempt to delete this comment: “%s” has failed.' ), 'use_id' ); - $trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: “%s” has failed.' ), 'use_id' ); - $trans['approve']['comment'] = array( __( 'Your attempt to approve this comment: “%s” has failed.' ), 'use_id' ); - $trans['update']['comment'] = array( __( 'Your attempt to edit this comment: “%s” has failed.' ), 'use_id' ); - $trans['bulk']['comments'] = array( __( 'Your attempt to bulk modify comments has failed.' ), false ); - $trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false ); - - $trans['add']['bookmark'] = array( __( 'Your attempt to add this link has failed.' ), false ); - $trans['delete']['bookmark'] = array( __( 'Your attempt to delete this link: “%s” has failed.' ), 'use_id' ); - $trans['update']['bookmark'] = array( __( 'Your attempt to edit this link: “%s” has failed.' ), 'use_id' ); - $trans['bulk']['bookmarks'] = array( __( 'Your attempt to bulk modify links has failed.' ), false ); - - $trans['add']['page'] = array( __( 'Your attempt to add this page has failed.' ), false ); - $trans['delete']['page'] = array( __( 'Your attempt to delete this page: “%s” has failed.' ), 'get_the_title' ); - $trans['update']['page'] = array( __( 'Your attempt to edit this page: “%s” has failed.' ), 'get_the_title' ); - - $trans['edit']['plugin'] = array( __( 'Your attempt to edit this plugin file: “%s” has failed.' ), 'use_id' ); - $trans['activate']['plugin'] = array( __( 'Your attempt to activate this plugin: “%s” has failed.' ), 'use_id' ); - $trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: “%s” has failed.' ), 'use_id' ); - $trans['upgrade']['plugin'] = array( __( 'Your attempt to upgrade this plugin: “%s” has failed.' ), 'use_id' ); - - $trans['add']['post'] = array( __( 'Your attempt to add this post has failed.' ), false ); - $trans['delete']['post'] = array( __( 'Your attempt to delete this post: “%s” has failed.' ), 'get_the_title' ); - $trans['update']['post'] = array( __( 'Your attempt to edit this post: “%s” has failed.' ), 'get_the_title' ); - - $trans['add']['user'] = array( __( 'Your attempt to add this user has failed.' ), false ); - $trans['delete']['users'] = array( __( 'Your attempt to delete users has failed.' ), false ); - $trans['bulk']['users'] = array( __( 'Your attempt to bulk modify users has failed.' ), false ); - $trans['update']['user'] = array( __( 'Your attempt to edit this user: “%s” has failed.' ), 'get_the_author_meta', 'display_name' ); - $trans['update']['profile'] = array( __( 'Your attempt to modify the profile for: “%s” has failed.' ), 'get_the_author_meta', 'display_name' ); - - $trans['update']['options'] = array( __( 'Your attempt to edit your settings has failed.' ), false ); - $trans['update']['permalink'] = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' ); - $trans['edit']['file'] = array( __( 'Your attempt to edit this file: “%s” has failed.' ), 'use_id' ); - $trans['edit']['theme'] = array( __( 'Your attempt to edit this theme file: “%s” has failed.' ), 'use_id' ); - $trans['switch']['theme'] = array( __( 'Your attempt to switch to this theme: “%s” has failed.' ), 'use_id' ); - - $trans['log']['out'] = array( sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'sitename' ) ), false ); - - if ( isset( $trans[$verb][$noun] ) ) { - if ( !empty( $trans[$verb][$noun][1] ) ) { - $lookup = $trans[$verb][$noun][1]; - if ( isset($trans[$verb][$noun][2]) ) - $lookup_value = $trans[$verb][$noun][2]; - $object = $matches[4]; - if ( 'use_id' != $lookup ) { - if ( isset( $lookup_value ) ) - $object = call_user_func( $lookup, $lookup_value, $object ); - else - $object = call_user_func( $lookup, $object ); - } - return sprintf( $trans[$verb][$noun][0], esc_html($object) ); + if ( $data instanceof JsonSerializable ) { + $data = $data->jsonSerialize(); } else { - return $trans[$verb][$noun][0]; + $data = get_object_vars( $data ); } - } - return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), isset($matches[4]) ? $matches[4] : '' ); - } else { - return apply_filters( 'explain_nonce_' . $action, __( 'Are you sure you want to do this?' ) ); + // Now, pass the array (or whatever was returned from jsonSerialize through). + return _wp_json_prepare_data( $data ); + + default: + return null; } } /** - * Display "Are You Sure" message to confirm the action being taken. + * Send a JSON response back to an Ajax request. * - * If the action has the nonce explain message, then it will be displayed along - * with the "Are you sure?" message. + * @since 3.5.0 * - * @package WordPress - * @subpackage Security - * @since 2.0.4 + * @param mixed $response Variable (usually an array or object) to encode as JSON, + * then print and die. + */ +function wp_send_json( $response ) { + @header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) ); + echo wp_json_encode( $response ); + if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) + wp_die(); + else + die; +} + +/** + * Send a JSON response back to an Ajax request, indicating success. * - * @param string $action The nonce action. + * @since 3.5.0 + * + * @param mixed $data Data to encode as JSON, then print and die. */ -function wp_nonce_ays( $action ) { - $title = __( 'WordPress Failure Notice' ); - $html = esc_html( wp_explain_nonce( $action ) ); - if ( 'log-out' == $action ) - $html .= "

" . sprintf( __( "Do you really want to log out?"), wp_logout_url() ); - elseif ( wp_get_referer() ) - $html .= "

" . __( 'Please try again.' ) . ""; +function wp_send_json_success( $data = null ) { + $response = array( 'success' => true ); - wp_die( $html, $title, array('response' => 403) ); + if ( isset( $data ) ) + $response['data'] = $data; + + wp_send_json( $response ); } /** - * Kill WordPress execution and display HTML message with error message. + * Send a JSON response back to an Ajax request, indicating failure. * - * Call this function complements the die() PHP function. The difference is that - * HTML will be displayed to the user. It is recommended to use this function - * only, when the execution should not continue any further. It is not - * recommended to call this function very often and try to handle as many errors - * as possible siliently. + * If the `$data` parameter is a {@see WP_Error} object, the errors + * within the object are processed and output as an array of error + * codes and corresponding messages. All other types are output + * without further processing. * - * @since 2.0.4 + * @since 3.5.0 + * @since 4.1.0 The `$data` parameter is now processed if a {@see WP_Error} + * object is passed in. * - * @param string $message Error message. - * @param string $title Error title. - * @param string|array $args Optional arguements to control behaviour. + * @param mixed $data Data to encode as JSON, then print and die. */ -function wp_die( $message, $title = '', $args = array() ) { - global $wp_locale; - - $defaults = array( 'response' => 500 ); - $r = wp_parse_args($args, $defaults); - - $have_gettext = function_exists('__'); +function wp_send_json_error( $data = null ) { + $response = array( 'success' => false ); + + if ( isset( $data ) ) { + if ( is_wp_error( $data ) ) { + $result = array(); + foreach ( $data->errors as $code => $messages ) { + foreach ( $messages as $message ) { + $result[] = array( 'code' => $code, 'message' => $message ); + } + } - if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) { - if ( empty( $title ) ) { - $error_data = $message->get_error_data(); - if ( is_array( $error_data ) && isset( $error_data['title'] ) ) - $title = $error_data['title']; + $response['data'] = $result; + } else { + $response['data'] = $data; } - $errors = $message->get_error_messages(); - switch ( count( $errors ) ) : - case 0 : - $message = ''; - break; - case 1 : - $message = "

{$errors[0]}

"; - break; - default : - $message = ""; - break; - endswitch; - } elseif ( is_string( $message ) ) { - $message = "

$message

"; - } - - if ( isset( $r['back_link'] ) && $r['back_link'] ) { - $back_text = $have_gettext? __('« Back') : '« Back'; - $message .= "\n

$back_text

"; - } - - if ( defined( 'WP_SITEURL' ) && '' != WP_SITEURL ) - $admin_dir = WP_SITEURL . '/wp-admin/'; - elseif ( function_exists( 'get_bloginfo' ) && '' != get_bloginfo( 'wpurl' ) ) - $admin_dir = get_bloginfo( 'wpurl' ) . '/wp-admin/'; - elseif ( strpos( $_SERVER['PHP_SELF'], 'wp-admin' ) !== false ) - $admin_dir = ''; - else - $admin_dir = 'wp-admin/'; - - if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) : - if( !headers_sent() ){ - status_header( $r['response'] ); - nocache_headers(); - header( 'Content-Type: text/html; charset=utf-8' ); } - if ( empty($title) ) { - $title = $have_gettext? __('WordPress › Error') : 'WordPress › Error'; - } - - $text_direction = 'ltr'; - if ( isset($r['text_direction']) && $r['text_direction'] == 'rtl' ) $text_direction = 'rtl'; - if ( ( $wp_locale ) && ( 'rtl' == $wp_locale->text_direction ) ) $text_direction = 'rtl'; -?> - - -> - - - <?php echo $title ?> - - - - - - - - - - -text_direction ) { + if ( is_rtl() ) { $input['directionality'] = 'rtl'; - $input['plugins'] .= ',directionality'; - $input['theme_advanced_buttons1'] .= ',ltr'; + + if ( ! empty( $input['plugins'] ) && strpos( $input['plugins'], 'directionality' ) === false ) { + $input['plugins'] .= ',directionality'; + } + + if ( ! empty( $input['toolbar1'] ) && ! preg_match( '/\bltr\b/', $input['toolbar1'] ) ) { + $input['toolbar1'] .= ',ltr'; + } } return $input; @@ -2635,6 +3102,7 @@ function _mce_set_direction( $input ) { * * @global array $wpsmiliestrans * @global array $wp_smiliessearch + * * @since 2.2.0 */ function smilies_init() { @@ -2646,50 +3114,51 @@ function smilies_init() { if ( !isset( $wpsmiliestrans ) ) { $wpsmiliestrans = array( - ':mrgreen:' => 'icon_mrgreen.gif', - ':neutral:' => 'icon_neutral.gif', - ':twisted:' => 'icon_twisted.gif', - ':arrow:' => 'icon_arrow.gif', - ':shock:' => 'icon_eek.gif', - ':smile:' => 'icon_smile.gif', - ':???:' => 'icon_confused.gif', - ':cool:' => 'icon_cool.gif', - ':evil:' => 'icon_evil.gif', - ':grin:' => 'icon_biggrin.gif', - ':idea:' => 'icon_idea.gif', - ':oops:' => 'icon_redface.gif', - ':razz:' => 'icon_razz.gif', - ':roll:' => 'icon_rolleyes.gif', - ':wink:' => 'icon_wink.gif', - ':cry:' => 'icon_cry.gif', - ':eek:' => 'icon_surprised.gif', - ':lol:' => 'icon_lol.gif', - ':mad:' => 'icon_mad.gif', - ':sad:' => 'icon_sad.gif', - '8-)' => 'icon_cool.gif', - '8-O' => 'icon_eek.gif', - ':-(' => 'icon_sad.gif', - ':-)' => 'icon_smile.gif', - ':-?' => 'icon_confused.gif', - ':-D' => 'icon_biggrin.gif', - ':-P' => 'icon_razz.gif', - ':-o' => 'icon_surprised.gif', - ':-x' => 'icon_mad.gif', - ':-|' => 'icon_neutral.gif', - ';-)' => 'icon_wink.gif', - '8)' => 'icon_cool.gif', - '8O' => 'icon_eek.gif', - ':(' => 'icon_sad.gif', - ':)' => 'icon_smile.gif', - ':?' => 'icon_confused.gif', - ':D' => 'icon_biggrin.gif', - ':P' => 'icon_razz.gif', - ':o' => 'icon_surprised.gif', - ':x' => 'icon_mad.gif', - ':|' => 'icon_neutral.gif', - ';)' => 'icon_wink.gif', - ':!:' => 'icon_exclaim.gif', - ':?:' => 'icon_question.gif', + ':mrgreen:' => 'mrgreen.png', + ':neutral:' => "\xf0\x9f\x98\x90", + ':twisted:' => "\xf0\x9f\x98\x88", + ':arrow:' => "\xe2\x9e\xa1", + ':shock:' => "\xf0\x9f\x98\xaf", + ':smile:' => 'simple-smile.png', + ':???:' => "\xf0\x9f\x98\x95", + ':cool:' => "\xf0\x9f\x98\x8e", + ':evil:' => "\xf0\x9f\x91\xbf", + ':grin:' => "\xf0\x9f\x98\x80", + ':idea:' => "\xf0\x9f\x92\xa1", + ':oops:' => "\xf0\x9f\x98\xb3", + ':razz:' => "\xf0\x9f\x98\x9b", + ':roll:' => 'rolleyes.png', + ':wink:' => "\xf0\x9f\x98\x89", + ':cry:' => "\xf0\x9f\x98\xa5", + ':eek:' => "\xf0\x9f\x98\xae", + ':lol:' => "\xf0\x9f\x98\x86", + ':mad:' => "\xf0\x9f\x98\xa1", + ':sad:' => 'frownie.png', + '8-)' => "\xf0\x9f\x98\x8e", + '8-O' => "\xf0\x9f\x98\xaf", + ':-(' => 'frownie.png', + ':-)' => 'simple-smile.png', + ':-?' => "\xf0\x9f\x98\x95", + ':-D' => "\xf0\x9f\x98\x80", + ':-P' => "\xf0\x9f\x98\x9b", + ':-o' => "\xf0\x9f\x98\xae", + ':-x' => "\xf0\x9f\x98\xa1", + ':-|' => "\xf0\x9f\x98\x90", + ';-)' => "\xf0\x9f\x98\x89", + // This one transformation breaks regular text with frequency. + // '8)' => "\xf0\x9f\x98\x8e", + '8O' => "\xf0\x9f\x98\xaf", + ':(' => 'frownie.png', + ':)' => 'simple-smile.png', + ':?' => "\xf0\x9f\x98\x95", + ':D' => "\xf0\x9f\x98\x80", + ':P' => "\xf0\x9f\x98\x9b", + ':o' => "\xf0\x9f\x98\xae", + ':x' => "\xf0\x9f\x98\xa1", + ':|' => "\xf0\x9f\x98\x90", + ';)' => "\xf0\x9f\x98\x89", + ':!:' => "\xe2\x9d\x97", + ':?:' => "\xe2\x9d\x93", ); } @@ -2704,7 +3173,10 @@ function smilies_init() { */ krsort($wpsmiliestrans); - $wp_smiliessearch = '/(?:\s|^)'; + $spaces = wp_spaces_regexp(); + + // Begin first "subpattern" + $wp_smiliessearch = '/(?<=' . $spaces . '|^)'; $subchar = ''; foreach ( (array) $wpsmiliestrans as $smiley => $img ) { @@ -2714,7 +3186,8 @@ function smilies_init() { // new subpattern? if ($firstchar != $subchar) { if ($subchar != '') { - $wp_smiliessearch .= ')|(?:\s|^)'; + $wp_smiliessearch .= ')(?=' . $spaces . '|$)'; // End previous "subpattern" + $wp_smiliessearch .= '|(?<=' . $spaces . '|^)'; // Begin another "subpattern" } $subchar = $firstchar; $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:'; @@ -2724,7 +3197,8 @@ function smilies_init() { $wp_smiliessearch .= preg_quote($rest, '/'); } - $wp_smiliessearch .= ')(?:\s|$)/m'; + $wp_smiliessearch .= ')(?=' . $spaces . '|$)/m'; + } /** @@ -2735,8 +3209,8 @@ function smilies_init() { * * @since 2.2.0 * - * @param string|array $args Value to merge with $defaults - * @param array $defaults Array that serves as the defaults. + * @param string|array $args Value to merge with $defaults + * @param array $defaults Optional. Array that serves as the defaults. Default empty. * @return array Merged user defined values with defaults. */ function wp_parse_args( $args, $defaults = '' ) { @@ -2753,76 +3227,241 @@ function wp_parse_args( $args, $defaults = '' ) { } /** - * Determines if default embed handlers should be loaded. + * Clean up an array, comma- or space-separated list of IDs. * - * Checks to make sure that the embeds library hasn't already been loaded. If - * it hasn't, then it will load the embeds library. + * @since 3.0.0 * - * @since 2.9 + * @param array|string $list List of ids. + * @return array Sanitized array of IDs. */ -function wp_maybe_load_embeds() { - if ( ! apply_filters('load_default_embeds', true) ) - return; - require_once( ABSPATH . WPINC . '/default-embeds.php' ); +function wp_parse_id_list( $list ) { + if ( !is_array($list) ) + $list = preg_split('/[\s,]+/', $list); + + return array_unique(array_map('absint', $list)); } /** - * Determines if Widgets library should be loaded. + * Extract a slice of an array, given a list of keys. * - * Checks to make sure that the widgets library hasn't already been loaded. If - * it hasn't, then it will load the widgets library and run an action hook. + * @since 3.1.0 * - * @since 2.2.0 - * @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value. + * @param array $array The original array. + * @param array $keys The list of keys. + * @return array The array slice. */ -function wp_maybe_load_widgets() { - if ( ! apply_filters('load_default_widgets', true) ) - return; - require_once( ABSPATH . WPINC . '/default-widgets.php' ); - add_action( '_admin_menu', 'wp_widgets_add_menu' ); +function wp_array_slice_assoc( $array, $keys ) { + $slice = array(); + foreach ( $keys as $key ) + if ( isset( $array[ $key ] ) ) + $slice[ $key ] = $array[ $key ]; + + return $slice; } /** - * Append the Widgets menu to the themes main menu. + * Determines if the variable is a numeric-indexed array. * - * @since 2.2.0 - * @uses $submenu The administration submenu list. + * @since 4.4.0 + * + * @param mixed $data Variable to check. + * @return bool Whether the variable is a list. */ -function wp_widgets_add_menu() { - global $submenu; - $submenu['themes.php'][7] = array( __( 'Widgets' ), 'switch_themes', 'widgets.php' ); - ksort( $submenu['themes.php'], SORT_NUMERIC ); +function wp_is_numeric_array( $data ) { + if ( ! is_array( $data ) ) { + return false; + } + + $keys = array_keys( $data ); + $string_keys = array_filter( $keys, 'is_string' ); + return count( $string_keys ) === 0; } /** - * Flush all output buffers for PHP 5.2. - * - * Make sure all output buffers are flushed before our singletons our destroyed. - * - * @since 2.2.0 + * Filters a list of objects, based on a set of key => value arguments. + * + * @since 3.0.0 + * + * @param array $list An array of objects to filter + * @param array $args Optional. An array of key => value arguments to match + * against each object. Default empty array. + * @param string $operator Optional. The logical operation to perform. 'or' means + * only one element from the array needs to match; 'and' + * means all elements must match. Default 'and'. + * @param bool|string $field A field from the object to place instead of the entire object. + * Default false. + * @return array A list of objects or object fields. */ -function wp_ob_end_flush_all() { - $levels = ob_get_level(); - for ($i=0; $i<$levels; $i++) - ob_end_flush(); +function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) { + if ( ! is_array( $list ) ) + return array(); + + $list = wp_list_filter( $list, $args, $operator ); + + if ( $field ) + $list = wp_list_pluck( $list, $field ); + + return $list; } /** - * Load the correct database class file. + * Filters a list of objects, based on a set of key => value arguments. + * + * @since 3.1.0 + * + * @param array $list An array of objects to filter. + * @param array $args Optional. An array of key => value arguments to match + * against each object. Default empty array. + * @param string $operator Optional. The logical operation to perform. 'AND' means + * all elements from the array must match. 'OR' means only + * one element needs to match. 'NOT' means no elements may + * match. Default 'AND'. + * @return array Array of found values. + */ +function wp_list_filter( $list, $args = array(), $operator = 'AND' ) { + if ( ! is_array( $list ) ) + return array(); + + if ( empty( $args ) ) + return $list; + + $operator = strtoupper( $operator ); + $count = count( $args ); + $filtered = array(); + + foreach ( $list as $key => $obj ) { + $to_match = (array) $obj; + + $matched = 0; + foreach ( $args as $m_key => $m_value ) { + if ( array_key_exists( $m_key, $to_match ) && $m_value == $to_match[ $m_key ] ) + $matched++; + } + + if ( ( 'AND' == $operator && $matched == $count ) + || ( 'OR' == $operator && $matched > 0 ) + || ( 'NOT' == $operator && 0 == $matched ) ) { + $filtered[$key] = $obj; + } + } + + return $filtered; +} + +/** + * Pluck a certain field out of each object in a list. * - * This function is used to load the database class file either at runtime or by - * wp-admin/setup-config.php We must globalise $wpdb to ensure that it is - * defined globally by the inline code in wp-db.php. + * This has the same functionality and prototype of + * array_column() (PHP 5.5) but also supports objects. * - * @since 2.5.0 - * @global $wpdb WordPress Database Object + * @since 3.1.0 + * @since 4.0.0 $index_key parameter added. + * + * @param array $list List of objects or arrays + * @param int|string $field Field from the object to place instead of the entire object + * @param int|string $index_key Optional. Field from the object to use as keys for the new array. + * Default null. + * @return array Array of found values. If `$index_key` is set, an array of found values with keys + * corresponding to `$index_key`. If `$index_key` is null, array keys from the original + * `$list` will be preserved in the results. */ -function require_wp_db() { - global $wpdb; - if ( file_exists( WP_CONTENT_DIR . '/db.php' ) ) - require_once( WP_CONTENT_DIR . '/db.php' ); - else - require_once( ABSPATH . WPINC . '/wp-db.php' ); +function wp_list_pluck( $list, $field, $index_key = null ) { + if ( ! $index_key ) { + /* + * This is simple. Could at some point wrap array_column() + * if we knew we had an array of arrays. + */ + foreach ( $list as $key => $value ) { + if ( is_object( $value ) ) { + $list[ $key ] = $value->$field; + } else { + $list[ $key ] = $value[ $field ]; + } + } + return $list; + } + + /* + * When index_key is not set for a particular item, push the value + * to the end of the stack. This is how array_column() behaves. + */ + $newlist = array(); + foreach ( $list as $value ) { + if ( is_object( $value ) ) { + if ( isset( $value->$index_key ) ) { + $newlist[ $value->$index_key ] = $value->$field; + } else { + $newlist[] = $value->$field; + } + } else { + if ( isset( $value[ $index_key ] ) ) { + $newlist[ $value[ $index_key ] ] = $value[ $field ]; + } else { + $newlist[] = $value[ $field ]; + } + } + } + + return $newlist; +} + +/** + * Determines if Widgets library should be loaded. + * + * Checks to make sure that the widgets library hasn't already been loaded. + * If it hasn't, then it will load the widgets library and run an action hook. + * + * @since 2.2.0 + */ +function wp_maybe_load_widgets() { + /** + * Filter whether to load the Widgets library. + * + * Passing a falsey value to the filter will effectively short-circuit + * the Widgets library from loading. + * + * @since 2.8.0 + * + * @param bool $wp_maybe_load_widgets Whether to load the Widgets library. + * Default true. + */ + if ( ! apply_filters( 'load_default_widgets', true ) ) { + return; + } + + require_once( ABSPATH . WPINC . '/default-widgets.php' ); + + add_action( '_admin_menu', 'wp_widgets_add_menu' ); +} + +/** + * Append the Widgets menu to the themes main menu. + * + * @since 2.2.0 + * + * @global array $submenu + */ +function wp_widgets_add_menu() { + global $submenu; + + if ( ! current_theme_supports( 'widgets' ) ) + return; + + $submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' ); + ksort( $submenu['themes.php'], SORT_NUMERIC ); +} + +/** + * Flush all output buffers for PHP 5.2. + * + * Make sure all output buffers are flushed before our singletons are destroyed. + * + * @since 2.2.0 + */ +function wp_ob_end_flush_all() { + $levels = ob_get_level(); + for ($i=0; $i<$levels; $i++) + ob_end_flush(); } /** @@ -2836,15 +3475,18 @@ function require_wp_db() { * search engines from caching the message. Custom DB messages should do the * same. * - * This function was backported to the the WordPress 2.3.2, but originally was - * added in WordPress 2.5.0. + * This function was backported to WordPress 2.3.2, but originally was added + * in WordPress 2.5.0. * * @since 2.3.2 - * @uses $wpdb + * + * @global wpdb $wpdb WordPress database abstraction object. */ function dead_db() { global $wpdb; + wp_load_translations_early(); + // Load custom DB error template, if present. if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) { require_once( WP_CONTENT_DIR . '/db-error.php' ); @@ -2852,7 +3494,7 @@ function dead_db() { } // If installing or in the admin, provide the verbose message. - if ( defined('WP_INSTALLING') || defined('WP_ADMIN') ) + if ( wp_installing() || defined( 'WP_ADMIN' ) ) wp_die($wpdb->error); // Otherwise, be terse. @@ -2860,15 +3502,15 @@ function dead_db() { nocache_headers(); header( 'Content-Type: text/html; charset=utf-8' ); ?> - -> + +> - Database Error + <?php _e( 'Database Error' ); ?> -

Error establishing a database connection

+

deprecated since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) ); + else + trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $function, $version ) ); + } else { + if ( ! is_null( $replacement ) ) + trigger_error( sprintf( '%1$s is deprecated since version %2$s! Use %3$s instead.', $function, $version, $replacement ) ); + else + trigger_error( sprintf( '%1$s is deprecated since version %2$s with no alternative available.', $function, $version ) ); + } + } +} + +/** + * Marks a constructor as deprecated and informs when it has been used. + * + * Similar to _deprecated_function(), but with different strings. Used to + * remove PHP4 style constructors. + * + * The current behavior is to trigger a user error if `WP_DEBUG` is true. + * + * This function is to be used in every PHP4 style constructor method that is deprecated. + * + * @since 4.3.0 + * @access private + * + * @param string $class The class containing the deprecated constructor. + * @param string $version The version of WordPress that deprecated the function. + */ +function _deprecated_constructor( $class, $version ) { + + /** + * Fires when a deprecated constructor is called. + * + * @since 4.3.0 + * + * @param string $class The class containing the deprecated constructor. + * @param string $version The version of WordPress that deprecated the function. + */ + do_action( 'deprecated_constructor_run', $class, $version ); + + /** + * Filter whether to trigger an error for deprecated functions. + * + * `WP_DEBUG` must be true in addition to the filter evaluating to true. + * + * @since 4.3.0 + * + * @param bool $trigger Whether to trigger the error for deprecated functions. Default true. + */ + if ( WP_DEBUG && apply_filters( 'deprecated_constructor_trigger_error', true ) ) { + if ( function_exists( '__' ) ) { + trigger_error( sprintf( __( 'The called constructor method for %1$s is deprecated since version %2$s! Use %3$s instead.' ), $class, $version, '
__construct()
' ) ); + } else { + trigger_error( sprintf( 'The called constructor method for %1$s is deprecated since version %2$s! Use %3$s instead.', $class, $version, '
__construct()
' ) ); + } + } + +} + +/** + * Mark a file as deprecated and inform when it has been used. + * + * There is a hook deprecated_file_included that will be called that can be used + * to get the backtrace up to what file and function included the deprecated + * file. + * + * The current behavior is to trigger a user error if WP_DEBUG is true. + * + * This function is to be used in every file that is deprecated. + * + * @since 2.5.0 + * @access private + * + * @param string $file The file that was included. + * @param string $version The version of WordPress that deprecated the file. + * @param string $replacement Optional. The file that should have been included based on ABSPATH. + * Default null. + * @param string $message Optional. A message regarding the change. Default empty. + */ +function _deprecated_file( $file, $version, $replacement = null, $message = '' ) { + + /** + * Fires when a deprecated file is called. + * + * @since 2.5.0 + * + * @param string $file The file that was called. + * @param string $replacement The file that should have been included based on ABSPATH. + * @param string $version The version of WordPress that deprecated the file. + * @param string $message A message regarding the change. + */ + do_action( 'deprecated_file_included', $file, $replacement, $version, $message ); + + /** + * Filter whether to trigger an error for deprecated files. + * + * @since 2.5.0 + * + * @param bool $trigger Whether to trigger the error for deprecated files. Default true. + */ + if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) { + $message = empty( $message ) ? '' : ' ' . $message; + if ( function_exists( '__' ) ) { + if ( ! is_null( $replacement ) ) + trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message ); + else + trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $file, $version ) . $message ); + } else { + if ( ! is_null( $replacement ) ) + trigger_error( sprintf( '%1$s is deprecated since version %2$s! Use %3$s instead.', $file, $version, $replacement ) . $message ); + else + trigger_error( sprintf( '%1$s is deprecated since version %2$s with no alternative available.', $file, $version ) . $message ); + } + } +} +/** + * Mark a function argument as deprecated and inform when it has been used. + * + * This function is to be used whenever a deprecated function argument is used. + * Before this function is called, the argument must be checked for whether it was + * used by comparing it to its default value or evaluating whether it is empty. + * For example: + * + * if ( ! empty( $deprecated ) ) { + * _deprecated_argument( __FUNCTION__, '3.0' ); + * } + * + * + * There is a hook deprecated_argument_run that will be called that can be used + * to get the backtrace up to what file and function used the deprecated + * argument. + * + * The current behavior is to trigger a user error if WP_DEBUG is true. + * + * @since 3.0.0 + * @access private + * + * @param string $function The function that was called. + * @param string $version The version of WordPress that deprecated the argument used. + * @param string $message Optional. A message regarding the change. Default null. + */ +function _deprecated_argument( $function, $version, $message = null ) { + + /** + * Fires when a deprecated argument is called. + * + * @since 3.0.0 + * + * @param string $function The function that was called. + * @param string $message A message regarding the change. + * @param string $version The version of WordPress that deprecated the argument used. + */ + do_action( 'deprecated_argument_run', $function, $message, $version ); + + /** + * Filter whether to trigger an error for deprecated arguments. + * + * @since 3.0.0 + * + * @param bool $trigger Whether to trigger the error for deprecated arguments. Default true. + */ + if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) { + if ( function_exists( '__' ) ) { + if ( ! is_null( $message ) ) + trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s! %3$s'), $function, $version, $message ) ); + else + trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s with no alternative available.'), $function, $version ) ); + } else { + if ( ! is_null( $message ) ) + trigger_error( sprintf( '%1$s was called with an argument that is deprecated since version %2$s! %3$s', $function, $version, $message ) ); + else + trigger_error( sprintf( '%1$s was called with an argument that is deprecated since version %2$s with no alternative available.', $function, $version ) ); + } + } +} + +/** + * Mark something as being incorrectly called. + * + * There is a hook doing_it_wrong_run that will be called that can be used + * to get the backtrace up to what file and function called the deprecated + * function. + * + * The current behavior is to trigger a user error if WP_DEBUG is true. + * + * @since 3.1.0 + * @access private + * + * @param string $function The function that was called. + * @param string $message A message explaining what has been done incorrectly. + * @param string $version The version of WordPress where the message was added. + */ +function _doing_it_wrong( $function, $message, $version ) { + + /** + * Fires when the given function is being used incorrectly. + * + * @since 3.1.0 + * + * @param string $function The function that was called. + * @param string $message A message explaining what has been done incorrectly. + * @param string $version The version of WordPress where the message was added. + */ + do_action( 'doing_it_wrong_run', $function, $message, $version ); + + /** + * Filter whether to trigger an error for _doing_it_wrong() calls. + * + * @since 3.1.0 + * + * @param bool $trigger Whether to trigger the error for _doing_it_wrong() calls. Default true. + */ + if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) { + if ( function_exists( '__' ) ) { + $version = is_null( $version ) ? '' : sprintf( __( '(This message was added in version %s.)' ), $version ); + /* translators: %s: Codex URL */ + $message .= ' ' . sprintf( __( 'Please see Debugging in WordPress for more information.' ), + __( 'https://codex.wordpress.org/Debugging_in_WordPress' ) + ); + trigger_error( sprintf( __( '%1$s was called incorrectly. %2$s %3$s' ), $function, $message, $version ) ); + } else { + $version = is_null( $version ) ? '' : sprintf( '(This message was added in version %s.)', $version ); + $message .= sprintf( ' Please see Debugging in WordPress for more information.', + 'https://codex.wordpress.org/Debugging_in_WordPress' + ); + trigger_error( sprintf( '%1$s was called incorrectly. %2$s %3$s', $function, $message, $version ) ); + } + } +} + +/** + * Is the server running earlier than 1.5.0 version of lighttpd? + * + * @since 2.5.0 * - * Determines if blog can be accessed over SSL by using cURL to access the site - * using the https in the siteurl. Requires cURL extension to work correctly. + * @return bool Whether the server is running lighttpd < 1.5.0. + */ +function is_lighttpd_before_150() { + $server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' ); + $server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : ''; + return 'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' ); +} + +/** + * Does the specified module exist in the Apache config? * * @since 2.5.0 * - * @return bool Whether or not SSL access is available + * @global bool $is_apache + * + * @param string $mod The module, e.g. mod_rewrite. + * @param bool $default Optional. The default return value if the module is not found. Default false. + * @return bool Whether the specified module is loaded. + */ +function apache_mod_loaded($mod, $default = false) { + global $is_apache; + + if ( !$is_apache ) + return false; + + if ( function_exists( 'apache_get_modules' ) ) { + $mods = apache_get_modules(); + if ( in_array($mod, $mods) ) + return true; + } elseif ( function_exists( 'phpinfo' ) && false === strpos( ini_get( 'disable_functions' ), 'phpinfo' ) ) { + ob_start(); + phpinfo(8); + $phpinfo = ob_get_clean(); + if ( false !== strpos($phpinfo, $mod) ) + return true; + } + return $default; +} + +/** + * Check if IIS 7+ supports pretty permalinks. + * + * @since 2.8.0 + * + * @global bool $is_iis7 + * + * @return bool Whether IIS7 supports permalinks. + */ +function iis7_supports_permalinks() { + global $is_iis7; + + $supports_permalinks = false; + if ( $is_iis7 ) { + /* First we check if the DOMDocument class exists. If it does not exist, then we cannot + * easily update the xml configuration file, hence we just bail out and tell user that + * pretty permalinks cannot be used. + * + * Next we check if the URL Rewrite Module 1.1 is loaded and enabled for the web site. When + * URL Rewrite 1.1 is loaded it always sets a server variable called 'IIS_UrlRewriteModule'. + * Lastly we make sure that PHP is running via FastCGI. This is important because if it runs + * via ISAPI then pretty permalinks will not work. + */ + $supports_permalinks = class_exists( 'DOMDocument', false ) && isset($_SERVER['IIS_UrlRewriteModule']) && ( PHP_SAPI == 'cgi-fcgi' ); + } + + /** + * Filter whether IIS 7+ supports pretty permalinks. + * + * @since 2.8.0 + * + * @param bool $supports_permalinks Whether IIS7 supports permalinks. Default false. + */ + return apply_filters( 'iis7_supports_permalinks', $supports_permalinks ); +} + +/** + * File validates against allowed set of defined rules. + * + * A return value of '1' means that the $file contains either '..' or './'. A + * return value of '2' means that the $file contains ':' after the first + * character. A return value of '3' means that the file is not in the allowed + * files list. + * + * @since 1.2.0 + * + * @param string $file File path. + * @param array $allowed_files List of allowed files. + * @return int 0 means nothing is wrong, greater than 0 means something was wrong. + */ +function validate_file( $file, $allowed_files = '' ) { + if ( false !== strpos( $file, '..' ) ) + return 1; + + if ( false !== strpos( $file, './' ) ) + return 1; + + if ( ! empty( $allowed_files ) && ! in_array( $file, $allowed_files ) ) + return 3; + + if (':' == substr( $file, 1, 1 ) ) + return 2; + + return 0; +} + +/** + * Determine if SSL is used. + * + * @since 2.6.0 + * + * @return bool True if SSL, false if not used. */ -function url_is_accessable_via_ssl($url) -{ - if (in_array('curl', get_loaded_extensions())) { - $ssl = preg_replace( '/^http:\/\//', 'https://', $url ); +function is_ssl() { + if ( isset($_SERVER['HTTPS']) ) { + if ( 'on' == strtolower($_SERVER['HTTPS']) ) + return true; + if ( '1' == $_SERVER['HTTPS'] ) + return true; + } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { + return true; + } + return false; +} + +/** + * Whether to force SSL used for the Administration Screens. + * + * @since 2.6.0 + * + * @staticvar bool $forced + * + * @param string|bool $force Optional. Whether to force SSL in admin screens. Default null. + * @return bool True if forced, false if not forced. + */ +function force_ssl_admin( $force = null ) { + static $forced = false; + + if ( !is_null( $force ) ) { + $old_forced = $forced; + $forced = $force; + return $old_forced; + } + + return $forced; +} + +/** + * Guess the URL for the site. + * + * Will remove wp-admin links to retrieve only return URLs not in the wp-admin + * directory. + * + * @since 2.6.0 + * + * @return string The guessed URL. + */ +function wp_guess_url() { + if ( defined('WP_SITEURL') && '' != WP_SITEURL ) { + $url = WP_SITEURL; + } else { + $abspath_fix = str_replace( '\\', '/', ABSPATH ); + $script_filename_dir = dirname( $_SERVER['SCRIPT_FILENAME'] ); + + // The request is for the admin + if ( strpos( $_SERVER['REQUEST_URI'], 'wp-admin' ) !== false || strpos( $_SERVER['REQUEST_URI'], 'wp-login.php' ) !== false ) { + $path = preg_replace( '#/(wp-admin/.*|wp-login.php)#i', '', $_SERVER['REQUEST_URI'] ); + + // The request is for a file in ABSPATH + } elseif ( $script_filename_dir . '/' == $abspath_fix ) { + // Strip off any file/query params in the path + $path = preg_replace( '#/[^/]*$#i', '', $_SERVER['PHP_SELF'] ); + + } else { + if ( false !== strpos( $_SERVER['SCRIPT_FILENAME'], $abspath_fix ) ) { + // Request is hitting a file inside ABSPATH + $directory = str_replace( ABSPATH, '', $script_filename_dir ); + // Strip off the sub directory, and any file/query params + $path = preg_replace( '#/' . preg_quote( $directory, '#' ) . '/[^/]*$#i', '' , $_SERVER['REQUEST_URI'] ); + } elseif ( false !== strpos( $abspath_fix, $script_filename_dir ) ) { + // Request is hitting a file above ABSPATH + $subdirectory = substr( $abspath_fix, strpos( $abspath_fix, $script_filename_dir ) + strlen( $script_filename_dir ) ); + // Strip off any file/query params from the path, appending the sub directory to the install + $path = preg_replace( '#/[^/]*$#i', '' , $_SERVER['REQUEST_URI'] ) . $subdirectory; + } else { + $path = $_SERVER['REQUEST_URI']; + } + } + + $schema = is_ssl() ? 'https://' : 'http://'; // set_url_scheme() is not defined yet + $url = $schema . $_SERVER['HTTP_HOST'] . $path; + } + + return rtrim($url, '/'); +} + +/** + * Temporarily suspend cache additions. + * + * Stops more data being added to the cache, but still allows cache retrieval. + * This is useful for actions, such as imports, when a lot of data would otherwise + * be almost uselessly added to the cache. + * + * Suspension lasts for a single page load at most. Remember to call this + * function again if you wish to re-enable cache adds earlier. + * + * @since 3.3.0 + * + * @staticvar bool $_suspend + * + * @param bool $suspend Optional. Suspends additions if true, re-enables them if false. + * @return bool The current suspend setting + */ +function wp_suspend_cache_addition( $suspend = null ) { + static $_suspend = false; + + if ( is_bool( $suspend ) ) + $_suspend = $suspend; + + return $_suspend; +} + +/** + * Suspend cache invalidation. + * + * Turns cache invalidation on and off. Useful during imports where you don't wont to do + * invalidations every time a post is inserted. Callers must be sure that what they are + * doing won't lead to an inconsistent cache when invalidation is suspended. + * + * @since 2.7.0 + * + * @global bool $_wp_suspend_cache_invalidation + * + * @param bool $suspend Optional. Whether to suspend or enable cache invalidation. Default true. + * @return bool The current suspend setting. + */ +function wp_suspend_cache_invalidation( $suspend = true ) { + global $_wp_suspend_cache_invalidation; + + $current_suspend = $_wp_suspend_cache_invalidation; + $_wp_suspend_cache_invalidation = $suspend; + return $current_suspend; +} + +/** + * Determine whether a site is the main site of the current network. + * + * @since 3.0.0 + * + * @global object $current_site + * + * @param int $site_id Optional. Site ID to test. Defaults to current site. + * Defaults to current site. + * @return bool True if $site_id is the main site of the network, or if not + * running Multisite. + */ +function is_main_site( $site_id = null ) { + // This is the current network's information; 'site' is old terminology. + global $current_site; + + if ( ! is_multisite() ) + return true; + + if ( ! $site_id ) + $site_id = get_current_blog_id(); + + return (int) $site_id === (int) $current_site->blog_id; +} + +/** + * Determine whether a network is the main network of the Multisite install. + * + * @since 3.7.0 + * + * @param int $network_id Optional. Network ID to test. Defaults to current network. + * @return bool True if $network_id is the main network, or if not running Multisite. + */ +function is_main_network( $network_id = null ) { + if ( ! is_multisite() ) { + return true; + } + + $current_network_id = (int) get_current_site()->id; + + if ( null === $network_id ) { + $network_id = $current_network_id; + } + + $network_id = (int) $network_id; + + return ( $network_id === get_main_network_id() ); +} + +/** + * Get the main network ID. + * + * @since 4.3.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @return int The ID of the main network. + */ +function get_main_network_id() { + global $wpdb; + + if ( ! is_multisite() ) { + return 1; + } + + if ( defined( 'PRIMARY_NETWORK_ID' ) ) { + $main_network_id = PRIMARY_NETWORK_ID; + } elseif ( 1 === (int) get_current_site()->id ) { + // If the current network has an ID of 1, assume it is the main network. + $main_network_id = 1; + } else { + $main_network_id = wp_cache_get( 'primary_network_id', 'site-options' ); + + if ( false === $main_network_id ) { + $main_network_id = (int) $wpdb->get_var( "SELECT id FROM {$wpdb->site} ORDER BY id LIMIT 1" ); + wp_cache_add( 'primary_network_id', $main_network_id, 'site-options' ); + } + } + + /** + * Filter the main network ID. + * + * @since 4.3.0 + * + * @param int $main_network_id The ID of the main network. + */ + return (int) apply_filters( 'get_main_network_id', $main_network_id ); +} + +/** + * Determine whether global terms are enabled. + * + * @since 3.0.0 + * + * @staticvar bool $global_terms + * + * @return bool True if multisite and global terms enabled. + */ +function global_terms_enabled() { + if ( ! is_multisite() ) + return false; + + static $global_terms = null; + if ( is_null( $global_terms ) ) { + + /** + * Filter whether global terms are enabled. + * + * Passing a non-null value to the filter will effectively short-circuit the function, + * returning the value of the 'global_terms_enabled' site option instead. + * + * @since 3.0.0 + * + * @param null $enabled Whether global terms are enabled. + */ + $filter = apply_filters( 'global_terms_enabled', null ); + if ( ! is_null( $filter ) ) + $global_terms = (bool) $filter; + else + $global_terms = (bool) get_site_option( 'global_terms_enabled', false ); + } + return $global_terms; +} + +/** + * gmt_offset modification for smart timezone handling. + * + * Overrides the gmt_offset option if we have a timezone_string available. + * + * @since 2.8.0 + * + * @return float|false Timezone GMT offset, false otherwise. + */ +function wp_timezone_override_offset() { + if ( !$timezone_string = get_option( 'timezone_string' ) ) { + return false; + } + + $timezone_object = timezone_open( $timezone_string ); + $datetime_object = date_create(); + if ( false === $timezone_object || false === $datetime_object ) { + return false; + } + return round( timezone_offset_get( $timezone_object, $datetime_object ) / HOUR_IN_SECONDS, 2 ); +} + +/** + * Sort-helper for timezones. + * + * @since 2.9.0 + * @access private + * + * @param array $a + * @param array $b + * @return int + */ +function _wp_timezone_choice_usort_callback( $a, $b ) { + // Don't use translated versions of Etc + if ( 'Etc' === $a['continent'] && 'Etc' === $b['continent'] ) { + // Make the order of these more like the old dropdown + if ( 'GMT+' === substr( $a['city'], 0, 4 ) && 'GMT+' === substr( $b['city'], 0, 4 ) ) { + return -1 * ( strnatcasecmp( $a['city'], $b['city'] ) ); + } + if ( 'UTC' === $a['city'] ) { + if ( 'GMT+' === substr( $b['city'], 0, 4 ) ) { + return 1; + } + return -1; + } + if ( 'UTC' === $b['city'] ) { + if ( 'GMT+' === substr( $a['city'], 0, 4 ) ) { + return -1; + } + return 1; + } + return strnatcasecmp( $a['city'], $b['city'] ); + } + if ( $a['t_continent'] == $b['t_continent'] ) { + if ( $a['t_city'] == $b['t_city'] ) { + return strnatcasecmp( $a['t_subcity'], $b['t_subcity'] ); + } + return strnatcasecmp( $a['t_city'], $b['t_city'] ); + } else { + // Force Etc to the bottom of the list + if ( 'Etc' === $a['continent'] ) { + return 1; + } + if ( 'Etc' === $b['continent'] ) { + return -1; + } + return strnatcasecmp( $a['t_continent'], $b['t_continent'] ); + } +} + +/** + * Gives a nicely-formatted list of timezone strings. + * + * @since 2.9.0 + * + * @staticvar bool $mo_loaded + * + * @param string $selected_zone Selected timezone. + * @return string + */ +function wp_timezone_choice( $selected_zone ) { + static $mo_loaded = false; + + $continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific'); + + // Load translations for continents and cities + if ( !$mo_loaded ) { + $locale = get_locale(); + $mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo'; + load_textdomain( 'continents-cities', $mofile ); + $mo_loaded = true; + } + + $zonen = array(); + foreach ( timezone_identifiers_list() as $zone ) { + $zone = explode( '/', $zone ); + if ( !in_array( $zone[0], $continents ) ) { + continue; + } + + // This determines what gets set and translated - we don't translate Etc/* strings here, they are done later + $exists = array( + 0 => ( isset( $zone[0] ) && $zone[0] ), + 1 => ( isset( $zone[1] ) && $zone[1] ), + 2 => ( isset( $zone[2] ) && $zone[2] ), + ); + $exists[3] = ( $exists[0] && 'Etc' !== $zone[0] ); + $exists[4] = ( $exists[1] && $exists[3] ); + $exists[5] = ( $exists[2] && $exists[3] ); + + $zonen[] = array( + 'continent' => ( $exists[0] ? $zone[0] : '' ), + 'city' => ( $exists[1] ? $zone[1] : '' ), + 'subcity' => ( $exists[2] ? $zone[2] : '' ), + 't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ), + 't_city' => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ), + 't_subcity' => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' ) + ); + } + usort( $zonen, '_wp_timezone_choice_usort_callback' ); + + $structure = array(); + + if ( empty( $selected_zone ) ) { + $structure[] = ''; + } + + foreach ( $zonen as $key => $zone ) { + // Build value in an array to join later + $value = array( $zone['continent'] ); + + if ( empty( $zone['city'] ) ) { + // It's at the continent level (generally won't happen) + $display = $zone['t_continent']; + } else { + // It's inside a continent group + + // Continent optgroup + if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) { + $label = $zone['t_continent']; + $structure[] = ''; + } + + // Add the city to the value + $value[] = $zone['city']; + + $display = $zone['t_city']; + if ( !empty( $zone['subcity'] ) ) { + // Add the subcity to the value + $value[] = $zone['subcity']; + $display .= ' - ' . $zone['t_subcity']; + } + } + + // Build the value + $value = join( '/', $value ); + $selected = ''; + if ( $value === $selected_zone ) { + $selected = 'selected="selected" '; + } + $structure[] = '"; + + // Close continent optgroup + if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) { + $structure[] = ''; + } + } + + // Do UTC + $structure[] = ''; + $selected = ''; + if ( 'UTC' === $selected_zone ) + $selected = 'selected="selected" '; + $structure[] = ''; + $structure[] = ''; + + // Do manual UTC offsets + $structure[] = ''; + $offset_range = array (-12, -11.5, -11, -10.5, -10, -9.5, -9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, + 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 5.75, 6, 6.5, 7, 7.5, 8, 8.5, 8.75, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.75, 13, 13.75, 14); + foreach ( $offset_range as $offset ) { + if ( 0 <= $offset ) + $offset_name = '+' . $offset; + else + $offset_name = (string) $offset; + + $offset_value = $offset_name; + $offset_name = str_replace(array('.25','.5','.75'), array(':15',':30',':45'), $offset_name); + $offset_name = 'UTC' . $offset_name; + $offset_value = 'UTC' . $offset_value; + $selected = ''; + if ( $offset_value === $selected_zone ) + $selected = 'selected="selected" '; + $structure[] = '"; + + } + $structure[] = ''; + + return join( "\n", $structure ); +} + +/** + * Strip close comment and close php tags from file headers used by WP. + * + * @since 2.8.0 + * @access private + * + * @see https://core.trac.wordpress.org/ticket/8497 + * + * @param string $str Header comment to clean up. + * @return string + */ +function _cleanup_header_comment( $str ) { + return trim(preg_replace("/\s*(?:\*\/|\?>).*/", '', $str)); +} + +/** + * Permanently delete comments or posts of any type that have held a status + * of 'trash' for the number of days defined in EMPTY_TRASH_DAYS. + * + * The default value of `EMPTY_TRASH_DAYS` is 30 (days). + * + * @since 2.9.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + */ +function wp_scheduled_delete() { + global $wpdb; + + $delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS ); + + $posts_to_delete = $wpdb->get_results($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A); + + foreach ( (array) $posts_to_delete as $post ) { + $post_id = (int) $post['post_id']; + if ( !$post_id ) + continue; + + $del_post = get_post($post_id); + + if ( !$del_post || 'trash' != $del_post->post_status ) { + delete_post_meta($post_id, '_wp_trash_meta_status'); + delete_post_meta($post_id, '_wp_trash_meta_time'); + } else { + wp_delete_post($post_id); + } + } - $ch = curl_init(); - curl_setopt($ch, CURLOPT_URL, $ssl); - curl_setopt($ch, CURLOPT_FAILONERROR, true); - curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); - curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); + $comments_to_delete = $wpdb->get_results($wpdb->prepare("SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A); - curl_exec($ch); + foreach ( (array) $comments_to_delete as $comment ) { + $comment_id = (int) $comment['comment_id']; + if ( !$comment_id ) + continue; - $status = curl_getinfo($ch, CURLINFO_HTTP_CODE); - curl_close ($ch); + $del_comment = get_comment($comment_id); - if ($status == 200 || $status == 401) { - return true; + if ( !$del_comment || 'trash' != $del_comment->comment_approved ) { + delete_comment_meta($comment_id, '_wp_trash_meta_time'); + delete_comment_meta($comment_id, '_wp_trash_meta_status'); + } else { + wp_delete_comment( $del_comment ); } } - return false; -} - -/** - * Secure URL, if available or the given URL. - * - * @since 2.5.0 - * - * @param string $url Complete URL path with transport. - * @return string Secure or regular URL path. - */ -function atom_service_url_filter($url) -{ - if ( url_is_accessable_via_ssl($url) ) - return preg_replace( '/^http:\/\//', 'https://', $url ); - else - return $url; } /** - * Marks a function as deprecated and informs when it has been used. - * - * There is a hook deprecated_function_run that will be called that can be used - * to get the backtrace up to what file and function called the deprecated - * function. + * Retrieve metadata from a file. * - * The current behavior is to trigger an user error if WP_DEBUG is true. + * Searches for metadata in the first 8kiB of a file, such as a plugin or theme. + * Each piece of metadata must be on its own line. Fields can not span multiple + * lines, the value will get cut at the end of the first line. * - * This function is to be used in every function in depreceated.php + * If the file data is not within that first 8kiB, then the author should correct + * their plugin file and move the data headers to the top. * - * @package WordPress - * @package Debug - * @since 2.5.0 - * @access private + * @link https://codex.wordpress.org/File_Header * - * @uses do_action() Calls 'deprecated_function_run' and passes the function name and what to use instead. - * @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do trigger or false to not trigger error. + * @since 2.9.0 * - * @param string $function The function that was called - * @param string $version The version of WordPress that deprecated the function - * @param string $replacement Optional. The function that should have been called + * @param string $file Path to the file. + * @param array $default_headers List of headers, in the format array('HeaderKey' => 'Header Name'). + * @param string $context Optional. If specified adds filter hook "extra_{$context}_headers". + * Default empty. + * @return array Array of file headers in `HeaderKey => Header Value` format. */ -function _deprecated_function($function, $version, $replacement=null) { +function get_file_data( $file, $default_headers, $context = '' ) { + // We don't need to write to the file, so just open for reading. + $fp = fopen( $file, 'r' ); + + // Pull only the first 8kiB of the file in. + $file_data = fread( $fp, 8192 ); + + // PHP will close file handle, but we are good citizens. + fclose( $fp ); - do_action('deprecated_function_run', $function, $replacement); + // Make sure we catch CR-only line endings. + $file_data = str_replace( "\r", "\n", $file_data ); + + /** + * Filter extra file headers by context. + * + * The dynamic portion of the hook name, `$context`, refers to + * the context where extra headers might be loaded. + * + * @since 2.9.0 + * + * @param array $extra_context_headers Empty array by default. + */ + if ( $context && $extra_headers = apply_filters( "extra_{$context}_headers", array() ) ) { + $extra_headers = array_combine( $extra_headers, $extra_headers ); // keys equal values + $all_headers = array_merge( $extra_headers, (array) $default_headers ); + } else { + $all_headers = $default_headers; + } - // Allow plugin to filter the output error trigger - if( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true )) { - if( !is_null($replacement) ) - trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) ); + foreach ( $all_headers as $field => $regex ) { + if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, $match ) && $match[1] ) + $all_headers[ $field ] = _cleanup_header_comment( $match[1] ); else - trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $function, $version ) ); + $all_headers[ $field ] = ''; } + + return $all_headers; } /** - * Marks a file as deprecated and informs when it has been used. - * - * There is a hook deprecated_file_included that will be called that can be used - * to get the backtrace up to what file and function included the deprecated - * file. + * Returns true. * - * The current behavior is to trigger an user error if WP_DEBUG is true. + * Useful for returning true to filters easily. * - * This function is to be used in every file that is depreceated - * - * @package WordPress - * @package Debug - * @since 2.5.0 - * @access private + * @since 3.0.0 * - * @uses do_action() Calls 'deprecated_file_included' and passes the file name and what to use instead. - * @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do trigger or false to not trigger error. + * @see __return_false() * - * @param string $file The file that was included - * @param string $version The version of WordPress that deprecated the function - * @param string $replacement Optional. The function that should have been called + * @return true True. */ -function _deprecated_file($file, $version, $replacement=null) { - - do_action('deprecated_file_included', $file, $replacement); - - // Allow plugin to filter the output error trigger - if( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) { - if( !is_null($replacement) ) - trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) ); - else - trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $file, $version ) ); - } +function __return_true() { + return true; } /** - * Is the server running earlier than 1.5.0 version of lighttpd + * Returns false. * - * @since 2.5.0 + * Useful for returning false to filters easily. * - * @return bool Whether the server is running lighttpd < 1.5.0 - */ -function is_lighttpd_before_150() { - $server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' ); - $server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : ''; - return 'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' ); -} - -/** - * Does the specified module exist in the apache config? + * @since 3.0.0 * - * @since 2.5.0 + * @see __return_true() * - * @param string $mod e.g. mod_rewrite - * @param bool $default The default return value if the module is not found - * @return bool + * @return false False. */ -function apache_mod_loaded($mod, $default = false) { - global $is_apache; - - if ( !$is_apache ) - return false; - - if ( function_exists('apache_get_modules') ) { - $mods = apache_get_modules(); - if ( in_array($mod, $mods) ) - return true; - } elseif ( function_exists('phpinfo') ) { - ob_start(); - phpinfo(8); - $phpinfo = ob_get_clean(); - if ( false !== strpos($phpinfo, $mod) ) - return true; - } - return $default; +function __return_false() { + return false; } /** - * File validates against allowed set of defined rules. + * Returns 0. * - * A return value of '1' means that the $file contains either '..' or './'. A - * return value of '2' means that the $file contains ':' after the first - * character. A return value of '3' means that the file is not in the allowed - * files list. + * Useful for returning 0 to filters easily. * - * @since 1.2.0 + * @since 3.0.0 * - * @param string $file File path. - * @param array $allowed_files List of allowed files. - * @return int 0 means nothing is wrong, greater than 0 means something was wrong. + * @return int 0. */ -function validate_file( $file, $allowed_files = '' ) { - if ( false !== strpos( $file, '..' )) - return 1; - - if ( false !== strpos( $file, './' )) - return 1; - - if (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) ) - return 3; - - if (':' == substr( $file, 1, 1 )) - return 2; - +function __return_zero() { return 0; } /** - * Determine if SSL is used. + * Returns an empty array. * - * @since 2.6.0 - * - * @return bool True if SSL, false if not used. - */ -function is_ssl() { - if ( isset($_SERVER['HTTPS']) ) { - if ( 'on' == strtolower($_SERVER['HTTPS']) ) - return true; - if ( '1' == $_SERVER['HTTPS'] ) - return true; - } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { - return true; - } - return false; -} - -/** - * Whether SSL login should be forced. + * Useful for returning an empty array to filters easily. * - * @since 2.6.0 + * @since 3.0.0 * - * @param string|bool $force Optional. - * @return bool True if forced, false if not forced. + * @return array Empty array. */ -function force_ssl_login( $force = null ) { - static $forced = false; - - if ( !is_null( $force ) ) { - $old_forced = $forced; - $forced = $force; - return $old_forced; - } - - return $forced; +function __return_empty_array() { + return array(); } /** - * Whether to force SSL used for the Administration Panels. + * Returns null. * - * @since 2.6.0 + * Useful for returning null to filters easily. * - * @param string|bool $force - * @return bool True if forced, false if not forced. + * @since 3.4.0 + * + * @return null Null value. */ -function force_ssl_admin( $force = null ) { - static $forced = false; - - if ( !is_null( $force ) ) { - $old_forced = $forced; - $forced = $force; - return $old_forced; - } - - return $forced; +function __return_null() { + return null; } /** - * Guess the URL for the site. + * Returns an empty string. * - * Will remove wp-admin links to retrieve only return URLs not in the wp-admin - * directory. + * Useful for returning an empty string to filters easily. * - * @since 2.6.0 + * @since 3.7.0 * - * @return string + * @see __return_null() + * + * @return string Empty string. */ -function wp_guess_url() { - if ( defined('WP_SITEURL') && '' != WP_SITEURL ) { - $url = WP_SITEURL; - } else { - $schema = ( isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on' ) ? 'https://' : 'http://'; - $url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']); - } - return $url; +function __return_empty_string() { + return ''; } /** - * Suspend cache invalidation. + * Send a HTTP header to disable content type sniffing in browsers which support it. * - * Turns cache invalidation on and off. Useful during imports where you don't wont to do invalidations - * every time a post is inserted. Callers must be sure that what they are doing won't lead to an inconsistent - * cache when invalidation is suspended. - * - * @since 2.7.0 + * @since 3.0.0 * - * @param bool $suspend Whether to suspend or enable cache invalidation - * @return bool The current suspend setting + * @see http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx + * @see http://src.chromium.org/viewvc/chrome?view=rev&revision=6985 */ -function wp_suspend_cache_invalidation($suspend = true) { - global $_wp_suspend_cache_invalidation; - - $current_suspend = $_wp_suspend_cache_invalidation; - $_wp_suspend_cache_invalidation = $suspend; - return $current_suspend; -} - -function get_site_option( $key, $default = false, $use_cache = true ) { - // Allow plugins to short-circuit site options. - $pre = apply_filters( 'pre_site_option_' . $key, false ); - if ( false !== $pre ) - return $pre; - - $value = get_option($key, $default); - - return apply_filters( 'site_option_' . $key, $value ); -} - -// expects $key, $value not to be SQL escaped -function add_site_option( $key, $value ) { - $value = apply_filters( 'pre_add_site_option_' . $key, $value ); - $result = add_option($key, $value); - do_action( "add_site_option_{$key}", $key, $value ); - return $result; -} - -function delete_site_option( $key ) { - $result = delete_option($key); - do_action( "delete_site_option_{$key}", $key ); - return $result; -} - -// expects $key, $value not to be SQL escaped -function update_site_option( $key, $value ) { - $oldvalue = get_site_option( $key ); - $value = apply_filters( 'pre_update_site_option_' . $key, $value, $oldvalue ); - $result = update_option($key, $value); - do_action( "update_site_option_{$key}", $key, $value ); - return $result; +function send_nosniff_header() { + @header( 'X-Content-Type-Options: nosniff' ); } /** - * Delete a site transient + * Return a MySQL expression for selecting the week number based on the start_of_week option. * - * @since 2.890 - * @package WordPress - * @subpackage Transient + * @ignore + * @since 3.0.0 * - * @param string $transient Transient name. Expected to not be SQL-escaped - * @return bool true if successful, false otherwise + * @param string $column Database column. + * @return string SQL clause. */ -function delete_site_transient($transient) { - global $_wp_using_ext_object_cache, $wpdb; - - if ( $_wp_using_ext_object_cache ) { - return wp_cache_delete($transient, 'site-transient'); - } else { - $transient = '_site_transient_' . esc_sql($transient); - return delete_site_option($transient); +function _wp_mysql_week( $column ) { + switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) { + case 1 : + return "WEEK( $column, 1 )"; + case 2 : + case 3 : + case 4 : + case 5 : + case 6 : + return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )"; + case 0 : + default : + return "WEEK( $column, 0 )"; } } /** - * Get the value of a site transient + * Find hierarchy loops using a callback function that maps object IDs to parent IDs. * - * If the transient does not exist or does not have a value, then the return value - * will be false. - * - * @since 2.9.0 - * @package WordPress - * @subpackage Transient + * @since 3.1.0 + * @access private * - * @param string $transient Transient name. Expected to not be SQL-escaped - * @return mixed Value of transient + * @param callable $callback Function that accepts ( ID, $callback_args ) and outputs parent_ID. + * @param int $start The ID to start the loop check at. + * @param int $start_parent The parent_ID of $start to use instead of calling $callback( $start ). + * Use null to always use $callback + * @param array $callback_args Optional. Additional arguments to send to $callback. + * @return array IDs of all members of loop. */ -function get_site_transient($transient) { - global $_wp_using_ext_object_cache, $wpdb; - - $pre = apply_filters( 'pre_site_transient_' . $transient, false ); - if ( false !== $pre ) - return $pre; - - if ( $_wp_using_ext_object_cache ) { - $value = wp_cache_get($transient, 'site-transient'); - } else { - $transient_option = '_site_transient_' . esc_sql($transient); - $transient_timeout = '_site_transient_timeout_' . esc_sql($transient); - if ( get_site_option($transient_timeout) < time() ) { - delete_site_option($transient_option); - delete_site_option($transient_timeout); - return false; - } +function wp_find_hierarchy_loop( $callback, $start, $start_parent, $callback_args = array() ) { + $override = is_null( $start_parent ) ? array() : array( $start => $start_parent ); - $value = get_site_option($transient_option); - } + if ( !$arbitrary_loop_member = wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override, $callback_args ) ) + return array(); - return apply_filters('site_transient_' . $transient, $value); + return wp_find_hierarchy_loop_tortoise_hare( $callback, $arbitrary_loop_member, $override, $callback_args, true ); } /** - * Set/update the value of a site transient + * Use the "The Tortoise and the Hare" algorithm to detect loops. * - * You do not need to serialize values, if the value needs to be serialize, then - * it will be serialized before it is set. + * For every step of the algorithm, the hare takes two steps and the tortoise one. + * If the hare ever laps the tortoise, there must be a loop. * - * @since 2.9.0 - * @package WordPress - * @subpackage Transient + * @since 3.1.0 + * @access private * - * @param string $transient Transient name. Expected to not be SQL-escaped - * @param mixed $value Transient value. - * @param int $expiration Time until expiration in seconds, default 0 - * @return bool False if value was not set and true if value was set. + * @param callable $callback Function that accepts ( ID, callback_arg, ... ) and outputs parent_ID. + * @param int $start The ID to start the loop check at. + * @param array $override Optional. An array of ( ID => parent_ID, ... ) to use instead of $callback. + * Default empty array. + * @param array $callback_args Optional. Additional arguments to send to $callback. Default empty array. + * @param bool $_return_loop Optional. Return loop members or just detect presence of loop? Only set + * to true if you already know the given $start is part of a loop (otherwise + * the returned array might include branches). Default false. + * @return mixed Scalar ID of some arbitrary member of the loop, or array of IDs of all members of loop if + * $_return_loop */ -function set_site_transient($transient, $value, $expiration = 0) { - global $_wp_using_ext_object_cache, $wpdb; +function wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override = array(), $callback_args = array(), $_return_loop = false ) { + $tortoise = $hare = $evanescent_hare = $start; + $return = array(); + + // Set evanescent_hare to one past hare + // Increment hare two steps + while ( + $tortoise + && + ( $evanescent_hare = isset( $override[$hare] ) ? $override[$hare] : call_user_func_array( $callback, array_merge( array( $hare ), $callback_args ) ) ) + && + ( $hare = isset( $override[$evanescent_hare] ) ? $override[$evanescent_hare] : call_user_func_array( $callback, array_merge( array( $evanescent_hare ), $callback_args ) ) ) + ) { + if ( $_return_loop ) + $return[$tortoise] = $return[$evanescent_hare] = $return[$hare] = true; - if ( $_wp_using_ext_object_cache ) { - return wp_cache_set($transient, $value, 'site-transient', $expiration); - } else { - $transient_timeout = '_site_transient_timeout_' . $transient; - $transient = '_site_transient_' . $transient; - $safe_transient = esc_sql($transient); - if ( false === get_site_option( $safe_transient ) ) { - if ( 0 != $expiration ) - add_site_option($transient_timeout, time() + $expiration); - return add_site_option($transient, $value); - } else { - if ( 0 != $expiration ) - update_site_option($transient_timeout, time() + $expiration); - return update_site_option($transient, $value); - } - } -} + // tortoise got lapped - must be a loop + if ( $tortoise == $evanescent_hare || $tortoise == $hare ) + return $_return_loop ? $return : $tortoise; -/** - * gmt_offset modification for smart timezone handling - * - * Overrides the gmt_offset option if we have a timezone_string available - */ -function wp_timezone_override_offset() { - if ( !wp_timezone_supported() ) { - return false; - } - if ( !$timezone_string = get_option( 'timezone_string' ) ) { - return false; + // Increment tortoise by one step + $tortoise = isset( $override[$tortoise] ) ? $override[$tortoise] : call_user_func_array( $callback, array_merge( array( $tortoise ), $callback_args ) ); } - @date_default_timezone_set( $timezone_string ); - $timezone_object = timezone_open( $timezone_string ); - $datetime_object = date_create(); - if ( false === $timezone_object || false === $datetime_object ) { - return false; - } - return round( timezone_offset_get( $timezone_object, $datetime_object ) / 3600, 2 ); + return false; } /** - * Check for PHP timezone support - */ -function wp_timezone_supported() { - $support = false; - if ( - function_exists( 'date_default_timezone_set' ) && - function_exists( 'timezone_identifiers_list' ) && - function_exists( 'timezone_open' ) && - function_exists( 'timezone_offset_get' ) - ) { - $support = true; - } - return apply_filters( 'timezone_support', $support ); -} - -function _wp_timezone_choice_usort_callback( $a, $b ) { - // Don't use translated versions of Etc - if ( 'Etc' === $a['continent'] && 'Etc' === $b['continent'] ) { - // Make the order of these more like the old dropdown - if ( 'GMT+' === substr( $a['city'], 0, 4 ) && 'GMT+' === substr( $b['city'], 0, 4 ) ) { - return -1 * ( strnatcasecmp( $a['city'], $b['city'] ) ); - } - if ( 'UTC' === $a['city'] ) { - if ( 'GMT+' === substr( $b['city'], 0, 4 ) ) { - return 1; - } - return -1; - } - if ( 'UTC' === $b['city'] ) { - if ( 'GMT+' === substr( $a['city'], 0, 4 ) ) { - return -1; - } - return 1; - } - return strnatcasecmp( $a['city'], $b['city'] ); - } - if ( $a['t_continent'] == $b['t_continent'] ) { - if ( $a['t_city'] == $b['t_city'] ) { - return strnatcasecmp( $a['t_subcity'], $b['t_subcity'] ); - } - return strnatcasecmp( $a['t_city'], $b['t_city'] ); - } else { - // Force Etc to the bottom of the list - if ( 'Etc' === $a['continent'] ) { - return 1; - } - if ( 'Etc' === $b['continent'] ) { - return -1; - } - return strnatcasecmp( $a['t_continent'], $b['t_continent'] ); + * Send a HTTP header to limit rendering of pages to same origin iframes. + * + * @since 3.1.3 + * + * @see https://developer.mozilla.org/en/the_x-frame-options_response_header + */ +function send_frame_options_header() { + @header( 'X-Frame-Options: SAMEORIGIN' ); +} + +/** + * Retrieve a list of protocols to allow in HTML attributes. + * + * @since 3.3.0 + * @since 4.3.0 Added 'webcal' to the protocols array. + * + * @see wp_kses() + * @see esc_url() + * + * @staticvar array $protocols + * + * @return array Array of allowed protocols. Defaults to an array containing 'http', 'https', + * 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', + * 'mms', 'rtsp', 'svn', 'tel', 'fax', 'xmpp', and 'webcal'. + */ +function wp_allowed_protocols() { + static $protocols = array(); + + if ( empty( $protocols ) ) { + $protocols = array( 'http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', 'mms', 'rtsp', 'svn', 'tel', 'fax', 'xmpp', 'webcal' ); + + /** + * Filter the list of protocols allowed in HTML attributes. + * + * @since 3.0.0 + * + * @param array $protocols Array of allowed protocols e.g. 'http', 'ftp', 'tel', and more. + */ + $protocols = apply_filters( 'kses_allowed_protocols', $protocols ); } + + return $protocols; } /** - * Gives a nicely formatted list of timezone strings // temporary! Not in final + * Return a comma-separated string of functions that have been called to get + * to the current point in code. * - * @param $selected_zone string Selected Zone + * @since 3.4.0 * + * @see https://core.trac.wordpress.org/ticket/19589 + * + * @param string $ignore_class Optional. A class to ignore all function calls within - useful + * when you want to just give info about the callee. Default null. + * @param int $skip_frames Optional. A number of stack frames to skip - useful for unwinding + * back to the source of the issue. Default 0. + * @param bool $pretty Optional. Whether or not you want a comma separated string or raw + * array returned. Default true. + * @return string|array Either a string containing a reversed comma separated trace or an array + * of individual calls. */ -function wp_timezone_choice( $selected_zone ) { - static $mo_loaded = false; +function wp_debug_backtrace_summary( $ignore_class = null, $skip_frames = 0, $pretty = true ) { + if ( version_compare( PHP_VERSION, '5.2.5', '>=' ) ) + $trace = debug_backtrace( false ); + else + $trace = debug_backtrace(); - $continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific'); + $caller = array(); + $check_class = ! is_null( $ignore_class ); + $skip_frames++; // skip this function - // Load translations for continents and cities - if ( !$mo_loaded ) { - $locale = get_locale(); - $mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo'; - load_textdomain( 'continents-cities', $mofile ); - $mo_loaded = true; + foreach ( $trace as $call ) { + if ( $skip_frames > 0 ) { + $skip_frames--; + } elseif ( isset( $call['class'] ) ) { + if ( $check_class && $ignore_class == $call['class'] ) + continue; // Filter out calls + + $caller[] = "{$call['class']}{$call['type']}{$call['function']}"; + } else { + if ( in_array( $call['function'], array( 'do_action', 'apply_filters' ) ) ) { + $caller[] = "{$call['function']}('{$call['args'][0]}')"; + } elseif ( in_array( $call['function'], array( 'include', 'include_once', 'require', 'require_once' ) ) ) { + $caller[] = $call['function'] . "('" . str_replace( array( WP_CONTENT_DIR, ABSPATH ) , '', $call['args'][0] ) . "')"; + } else { + $caller[] = $call['function']; + } + } } + if ( $pretty ) + return join( ', ', array_reverse( $caller ) ); + else + return $caller; +} - $zonen = array(); - foreach ( timezone_identifiers_list() as $zone ) { - $zone = explode( '/', $zone ); - if ( !in_array( $zone[0], $continents ) ) { - continue; +/** + * Retrieve ids that are not already present in the cache. + * + * @since 3.4.0 + * @access private + * + * @param array $object_ids ID list. + * @param string $cache_key The cache bucket to check against. + * + * @return array List of ids not present in the cache. + */ +function _get_non_cached_ids( $object_ids, $cache_key ) { + $clean = array(); + foreach ( $object_ids as $id ) { + $id = (int) $id; + if ( !wp_cache_get( $id, $cache_key ) ) { + $clean[] = $id; } + } - // This determines what gets set and translated - we don't translate Etc/* strings here, they are done later - $exists = array( - 0 => ( isset( $zone[0] ) && $zone[0] ) ? true : false, - 1 => ( isset( $zone[1] ) && $zone[1] ) ? true : false, - 2 => ( isset( $zone[2] ) && $zone[2] ) ? true : false - ); - $exists[3] = ( $exists[0] && 'Etc' !== $zone[0] ) ? true : false; - $exists[4] = ( $exists[1] && $exists[3] ) ? true : false; - $exists[5] = ( $exists[2] && $exists[3] ) ? true : false; + return $clean; +} - $zonen[] = array( - 'continent' => ( $exists[0] ? $zone[0] : '' ), - 'city' => ( $exists[1] ? $zone[1] : '' ), - 'subcity' => ( $exists[2] ? $zone[2] : '' ), - 't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ), - 't_city' => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ), - 't_subcity' => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' ) - ); - } - usort( $zonen, '_wp_timezone_choice_usort_callback' ); +/** + * Test if the current device has the capability to upload files. + * + * @since 3.4.0 + * @access private + * + * @return bool Whether the device is able to upload files. + */ +function _device_can_upload() { + if ( ! wp_is_mobile() ) + return true; - $structure = array(); + $ua = $_SERVER['HTTP_USER_AGENT']; - if ( empty( $selected_zone ) ) { - $structure[] = ''; + if ( strpos($ua, 'iPhone') !== false + || strpos($ua, 'iPad') !== false + || strpos($ua, 'iPod') !== false ) { + return preg_match( '#OS ([\d_]+) like Mac OS X#', $ua, $version ) && version_compare( $version[1], '6', '>=' ); } - foreach ( $zonen as $key => $zone ) { - // Build value in an array to join later - $value = array( $zone['continent'] ); - - if ( empty( $zone['city'] ) ) { - // It's at the continent level (generally won't happen) - $display = $zone['t_continent']; - } else { - // It's inside a continent group + return true; +} - // Continent optgroup - if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) { - $label = $zone['t_continent']; - $structure[] = ''; - } +/** + * Test if a given path is a stream URL + * + * @param string $path The resource path or URL. + * @return bool True if the path is a stream URL. + */ +function wp_is_stream( $path ) { + $wrappers = stream_get_wrappers(); + $wrappers_re = '(' . join('|', $wrappers) . ')'; - // Add the city to the value - $value[] = $zone['city']; + return preg_match( "!^$wrappers_re://!", $path ) === 1; +} - $display = $zone['t_city']; - if ( !empty( $zone['subcity'] ) ) { - // Add the subcity to the value - $value[] = $zone['subcity']; - $display .= ' - ' . $zone['t_subcity']; - } - } +/** + * Test if the supplied date is valid for the Gregorian calendar. + * + * @since 3.5.0 + * + * @see checkdate() + * + * @param int $month Month number. + * @param int $day Day number. + * @param int $year Year number. + * @param string $source_date The date to filter. + * @return bool True if valid date, false if not valid date. + */ +function wp_checkdate( $month, $day, $year, $source_date ) { + /** + * Filter whether the given date is valid for the Gregorian calendar. + * + * @since 3.5.0 + * + * @param bool $checkdate Whether the given date is valid. + * @param string $source_date Date to check. + */ + return apply_filters( 'wp_checkdate', checkdate( $month, $day, $year ), $source_date ); +} - // Build the value - $value = join( '/', $value ); - $selected = ''; - if ( $value === $selected_zone ) { - $selected = 'selected="selected" '; - } - $structure[] = '"; +/** + * Load the auth check for monitoring whether the user is still logged in. + * + * Can be disabled with remove_action( 'admin_enqueue_scripts', 'wp_auth_check_load' ); + * + * This is disabled for certain screens where a login screen could cause an + * inconvenient interruption. A filter called wp_auth_check_load can be used + * for fine-grained control. + * + * @since 3.6.0 + */ +function wp_auth_check_load() { + if ( ! is_admin() && ! is_user_logged_in() ) + return; - // Close continent optgroup - if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) { - $structure[] = ''; - } - } + if ( defined( 'IFRAME_REQUEST' ) ) + return; - // Do UTC - $structure[] = ''; - $selected = ''; - if ( 'UTC' === $selected_zone ) - $selected = 'selected="selected" '; - $structure[] = ''; - $structure[] = ''; + $screen = get_current_screen(); + $hidden = array( 'update', 'update-network', 'update-core', 'update-core-network', 'upgrade', 'upgrade-network', 'network' ); + $show = ! in_array( $screen->id, $hidden ); + + /** + * Filter whether to load the authentication check. + * + * Passing a falsey value to the filter will effectively short-circuit + * loading the authentication check. + * + * @since 3.6.0 + * + * @param bool $show Whether to load the authentication check. + * @param WP_Screen $screen The current screen object. + */ + if ( apply_filters( 'wp_auth_check_load', $show, $screen ) ) { + wp_enqueue_style( 'wp-auth-check' ); + wp_enqueue_script( 'wp-auth-check' ); - // Do manual UTC offsets - $structure[] = ''; - $offset_range = array (-12, -11.5, -11, -10.5, -10, -9.5, -9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, - 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 5.75, 6, 6.5, 7, 7.5, 8, 8.5, 8.75, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.75, 13, 13.75, 14); - foreach ( $offset_range as $offset ) { - if ( 0 <= $offset ) - $offset_name = '+' . $offset; - else - $offset_name = (string) $offset; + add_action( 'admin_print_footer_scripts', 'wp_auth_check_html', 5 ); + add_action( 'wp_print_footer_scripts', 'wp_auth_check_html', 5 ); + } +} - $offset_value = $offset_name; - $offset_name = str_replace(array('.25','.5','.75'), array(':15',':30',':45'), $offset_name); - $offset_name = 'UTC' . $offset_name; - $offset_value = 'UTC' . $offset_value; - $selected = ''; - if ( $offset_value === $selected_zone ) - $selected = 'selected="selected" '; - $structure[] = '"; - +/** + * Output the HTML that shows the wp-login dialog when the user is no longer logged in. + * + * @since 3.6.0 + */ +function wp_auth_check_html() { + $login_url = wp_login_url(); + $current_domain = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST']; + $same_domain = ( strpos( $login_url, $current_domain ) === 0 ); + + /** + * Filter whether the authentication check originated at the same domain. + * + * @since 3.6.0 + * + * @param bool $same_domain Whether the authentication check originated at the same domain. + */ + $same_domain = apply_filters( 'wp_auth_check_same_domain', $same_domain ); + $wrap_class = $same_domain ? 'hidden' : 'hidden fallback'; + + ?> +
+
+
+
+ +
+ '; - return join( "\n", $structure ); + ?> +
+

+

+

+
+
+
+ ).*/", '', $str)); + * Send a result that shows a log-in box if the user is no longer logged in, + * or if their cookie is within the grace period. + * + * @since 3.6.0 + * + * @global int $login_grace_period + * + * @param array $response The Heartbeat response. + * @return array $response The Heartbeat response with 'wp-auth-check' value set. + */ +function wp_auth_check( $response ) { + $response['wp-auth-check'] = is_user_logged_in() && empty( $GLOBALS['login_grace_period'] ); + return $response; } /** - * Permanently deletes posts, pages, attachments, and comments which have been in the trash for EMPTY_TRASH_DAYS. + * Return RegEx body to liberally match an opening HTML tag. * - * @since 2.9.0 + * Matches an opening HTML tag that: + * 1. Is self-closing or + * 2. Has no body but has a closing tag of the same name or + * 3. Contains a body and a closing tag of the same name + * + * Note: this RegEx does not balance inner tags and does not attempt + * to produce valid HTML * - * @return void + * @since 3.6.0 + * + * @param string $tag An HTML tag name. Example: 'video'. + * @return string Tag RegEx. */ -function wp_scheduled_delete() { - global $wpdb; - - $delete_timestamp = time() - (60*60*24*EMPTY_TRASH_DAYS); +function get_tag_regex( $tag ) { + if ( empty( $tag ) ) + return; + return sprintf( '<%1$s[^<]*(?:>[\s\S]*<\/%1$s>|\s*\/>)', tag_escape( $tag ) ); +} - $posts_to_delete = $wpdb->get_results($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A); +/** + * Retrieve a canonical form of the provided charset appropriate for passing to PHP + * functions such as htmlspecialchars() and charset html attributes. + * + * @since 3.6.0 + * @access private + * + * @see https://core.trac.wordpress.org/ticket/23688 + * + * @param string $charset A charset name. + * @return string The canonical form of the charset. + */ +function _canonical_charset( $charset ) { + if ( 'UTF-8' === $charset || 'utf-8' === $charset || 'utf8' === $charset || + 'UTF8' === $charset ) + return 'UTF-8'; - foreach ( (array) $posts_to_delete as $post ) { - $post_id = (int) $post['post_id']; - if ( !$post_id ) - continue; + if ( 'ISO-8859-1' === $charset || 'iso-8859-1' === $charset || + 'iso8859-1' === $charset || 'ISO8859-1' === $charset ) + return 'ISO-8859-1'; - $del_post = get_post($post_id); + return $charset; +} - if ( !$del_post || 'trash' != $del_post->post_status ) { - delete_post_meta($post_id, '_wp_trash_meta_status'); - delete_post_meta($post_id, '_wp_trash_meta_time'); - } else { - wp_delete_post($post_id); - } - } +/** + * Set the mbstring internal encoding to a binary safe encoding when func_overload + * is enabled. + * + * When mbstring.func_overload is in use for multi-byte encodings, the results from + * strlen() and similar functions respect the utf8 characters, causing binary data + * to return incorrect lengths. + * + * This function overrides the mbstring encoding to a binary-safe encoding, and + * resets it to the users expected encoding afterwards through the + * `reset_mbstring_encoding` function. + * + * It is safe to recursively call this function, however each + * `mbstring_binary_safe_encoding()` call must be followed up with an equal number + * of `reset_mbstring_encoding()` calls. + * + * @since 3.7.0 + * + * @see reset_mbstring_encoding() + * + * @staticvar array $encodings + * @staticvar bool $overloaded + * + * @param bool $reset Optional. Whether to reset the encoding back to a previously-set encoding. + * Default false. + */ +function mbstring_binary_safe_encoding( $reset = false ) { + static $encodings = array(); + static $overloaded = null; - $comments_to_delete = $wpdb->get_results($wpdb->prepare("SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A); + if ( is_null( $overloaded ) ) + $overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 ); - foreach ( (array) $comments_to_delete as $comment ) { - $comment_id = (int) $comment['comment_id']; - if ( !$comment_id ) - continue; + if ( false === $overloaded ) + return; - $del_comment = get_comment($comment_id); + if ( ! $reset ) { + $encoding = mb_internal_encoding(); + array_push( $encodings, $encoding ); + mb_internal_encoding( 'ISO-8859-1' ); + } - if ( !$del_comment || 'trash' != $del_comment->comment_approved ) { - delete_comment_meta($comment_id, '_wp_trash_meta_time'); - delete_comment_meta($comment_id, '_wp_trash_meta_status'); - } else { - wp_delete_comment($comment_id); - } + if ( $reset && $encodings ) { + $encoding = array_pop( $encodings ); + mb_internal_encoding( $encoding ); } } /** - * Parse the file contents to retrieve its metadata. + * Reset the mbstring internal encoding to a users previously set encoding. * - * Searches for metadata for a file, such as a plugin or theme. Each piece of - * metadata must be on its own line. For a field spanning multple lines, it - * must not have any newlines or only parts of it will be displayed. + * @see mbstring_binary_safe_encoding() * - * Some users have issues with opening large files and manipulating the contents - * for want is usually the first 1kiB or 2kiB. This function stops pulling in - * the file contents when it has all of the required data. - * - * The first 8kiB of the file will be pulled in and if the file data is not - * within that first 8kiB, then the author should correct their plugin file - * and move the data headers to the top. + * @since 3.7.0 + */ +function reset_mbstring_encoding() { + mbstring_binary_safe_encoding( true ); +} + +/** + * Filter/validate a variable as a boolean. * - * The file is assumed to have permissions to allow for scripts to read - * the file. This is not checked however and the file is only opened for - * reading. + * Alternative to `filter_var( $var, FILTER_VALIDATE_BOOLEAN )`. * - * @since 2.9.0 + * @since 4.0.0 * - * @param string $file Path to the file - * @param bool $markup If the returned data should have HTML markup applied - * @param string $context If specified adds filter hook "extra_<$context>_headers" + * @param mixed $var Boolean value to validate. + * @return bool Whether the value is validated. */ -function get_file_data( $file, $default_headers, $context = '' ) { - // We don't need to write to the file, so just open for reading. - $fp = fopen( $file, 'r' ); - - // Pull only the first 8kiB of the file in. - $file_data = fread( $fp, 8192 ); +function wp_validate_boolean( $var ) { + if ( is_bool( $var ) ) { + return $var; + } - // PHP will close file handle, but we are good citizens. - fclose( $fp ); + if ( is_string( $var ) && 'false' === strtolower( $var ) ) { + return false; + } - if( $context != '' ) { - $extra_headers = apply_filters( "extra_$context".'_headers', array() ); + return (bool) $var; +} - $extra_headers = array_flip( $extra_headers ); - foreach( $extra_headers as $key=>$value ) { - $extra_headers[$key] = $key; - } - $all_headers = array_merge($extra_headers, $default_headers); - } else { - $all_headers = $default_headers; +/** + * Delete a file + * + * @since 4.2.0 + * + * @param string $file The path to the file to delete. + */ +function wp_delete_file( $file ) { + /** + * Filter the path of the file to delete. + * + * @since 2.1.0 + * + * @param string $medium Path to the file to delete. + */ + $delete = apply_filters( 'wp_delete_file', $file ); + if ( ! empty( $delete ) ) { + @unlink( $delete ); } +} - - foreach ( $all_headers as $field => $regex ) { - preg_match( '/' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field}); - if ( !empty( ${$field} ) ) - ${$field} = _cleanup_header_comment( ${$field}[1] ); - else - ${$field} = ''; +/** + * Outputs a small JS snippet on preview tabs/windows to remove `window.name` on unload. + * + * This prevents reusing the same tab for a preview when the user has navigated away. + * + * @since 4.3.0 + */ +function wp_post_preview_js() { + global $post; + + if ( ! is_preview() || empty( $post ) ) { + return; } - $file_data = compact( array_keys( $all_headers ) ); - - return $file_data; + // Has to match the window name used in post_submit_meta_box() + $name = 'wp-preview-' . (int) $post->ID; + + ?> + +