X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/022dfbbbe3215917d84708eb09acca93b21ae9e0..refs/tags/wordpress-4.7.1:/wp-includes/functions.php?ds=inline diff --git a/wp-includes/functions.php b/wp-includes/functions.php index 8968c656..01045f03 100644 --- a/wp-includes/functions.php +++ b/wp-includes/functions.php @@ -1,2568 +1,5639 @@ escape($_COOKIE[USER_COOKIE]); - return $wpdb->get_var("SELECT $field FROM $wpdb->users WHERE user_login = '$user'"); -} +/** + * Retrieve the date in localized format, based on timestamp. + * + * If the locale specifies the locale month and weekday, then the locale will + * take over the format for the date. If it isn't, then the date format string + * will be used instead. + * + * @since 0.71 + * + * @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 = $unixtimestamp; -function mysql2date($dateformatstring, $mysqlstring, $translate = true) { - global $month, $weekday, $month_abbrev, $weekday_abbrev; - $m = $mysqlstring; - if ( empty($m) ) { - return false; + if ( false === $i ) { + $i = current_time( 'timestamp', $gmt ); } - $i = mktime(substr($m,11,2),substr($m,14,2),substr($m,17,2),substr($m,5,2),substr($m,8,2),substr($m,0,4)); - - if ( -1 == $i || false == $i ) - $i = 0; - if ( !empty($month) && !empty($weekday) && $translate ) { - $datemonth = $month[date('m', $i)]; - $datemonth_abbrev = $month_abbrev[$datemonth]; - $dateweekday = $weekday[date('w', $i)]; - $dateweekday_abbrev = $weekday_abbrev[$dateweekday]; + /* + * Store original value for language with untypical grammars. + * See https://core.trac.wordpress.org/ticket/9396 + */ + $req_format = $dateformatstring; + + if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) { + $datemonth = $wp_locale->get_month( date( 'm', $i ) ); + $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth ); + $dateweekday = $wp_locale->get_weekday( date( 'w', $i ) ); + $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday ); + $datemeridiem = $wp_locale->get_meridiem( date( 'a', $i ) ); + $datemeridiem_capital = $wp_locale->get_meridiem( date( 'A', $i ) ); $dateformatstring = ' '.$dateformatstring; - $dateformatstring = preg_replace("/([^\\\])D/", "\\1".backslashit($dateweekday_abbrev), $dateformatstring); - $dateformatstring = preg_replace("/([^\\\])F/", "\\1".backslashit($datemonth), $dateformatstring); - $dateformatstring = preg_replace("/([^\\\])l/", "\\1".backslashit($dateweekday), $dateformatstring); - $dateformatstring = preg_replace("/([^\\\])M/", "\\1".backslashit($datemonth_abbrev), $dateformatstring); - - $dateformatstring = substr($dateformatstring, 1, strlen($dateformatstring)-1); + $dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring ); + $dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring ); + $dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring ); + $dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring ); + $dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring ); + $dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring ); + + $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 ); } - $j = @date($dateformatstring, $i); - if ( !$j ) { - // for debug purposes - // echo $i." ".$mysqlstring; + $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 = @date( $dateformatstring, $i ); + + /** + * Filters 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 $j; } -function current_time($type, $gmt = 0) { - switch ($type) { - case 'mysql': - if ( $gmt ) $d = gmdate('Y-m-d H:i:s'); - else $d = gmdate('Y-m-d H:i:s', (time() + (get_settings('gmt_offset') * 3600))); - return $d; - break; - case 'timestamp': - if ( $gmt ) $d = time(); - else $d = time() + (get_settings('gmt_offset') * 3600); - return $d; - break; +/** + * 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 $date; } -} -function date_i18n($dateformatstring, $unixtimestamp) { - global $month, $weekday, $month_abbrev, $weekday_abbrev; - $i = $unixtimestamp; - if ( (!empty($month)) && (!empty($weekday)) ) { - $datemonth = $month[date('m', $i)]; - $datemonth_abbrev = $month_abbrev[$datemonth]; - $dateweekday = $weekday[date('w', $i)]; - $dateweekday_abbrev = $weekday_abbrev[$dateweekday]; - $dateformatstring = ' '.$dateformatstring; - $dateformatstring = preg_replace("/([^\\\])D/", "\\1".backslashit($dateweekday_abbrev), $dateformatstring); - $dateformatstring = preg_replace("/([^\\\])F/", "\\1".backslashit($datemonth), $dateformatstring); - $dateformatstring = preg_replace("/([^\\\])l/", "\\1".backslashit($dateweekday), $dateformatstring); - $dateformatstring = preg_replace("/([^\\\])M/", "\\1".backslashit($datemonth_abbrev), $dateformatstring); - $dateformatstring = substr($dateformatstring, 1, strlen($dateformatstring)-1); + /* 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}\.? [^\d ]+#u', $date ) ) { + $months = $wp_locale->month; + $months_genitive = $wp_locale->month_genitive; + + foreach ( $months as $key => $month ) { + $months[ $key ] = '# ' . $month . '( |$)#u'; + } + + foreach ( $months_genitive as $key => $month ) { + $months_genitive[ $key ] = ' ' . $month . '$1'; + } + + $date = preg_replace( $months, $months_genitive, $date ); + } } - $j = @date($dateformatstring, $i); - return $j; + + // 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", $date ); } -function get_weekstartend($mysqlstring, $start_of_week) { - $my = substr($mysqlstring,0,4); - $mm = substr($mysqlstring,8,2); - $md = substr($mysqlstring,5,2); - $day = mktime(0,0,0, $md, $mm, $my); - $weekday = date('w',$day); - $i = 86400; - - if ( $weekday < get_settings('start_of_week') ) - $weekday = 7 - (get_settings('start_of_week') - $weekday); - - while ($weekday > get_settings('start_of_week')) { - $weekday = date('w',$day); - if ( $weekday < get_settings('start_of_week') ) - $weekday = 7 - (get_settings('start_of_week') - $weekday); - - $day = $day - 86400; - $i = 0; - } - $week['start'] = $day + 86400 - $i; - // $week['end'] = $day - $i + 691199; - $week['end'] = $week['start'] + 604799; - return $week; -} - -function get_lastpostdate($timezone = 'server') { - global $cache_lastpostdate, $pagenow, $wpdb; - $add_seconds_blog = get_settings('gmt_offset') * 3600; - $add_seconds_server = date('Z'); - $now = current_time('mysql', 1); - if ( !isset($cache_lastpostdate[$timezone]) ) { - switch(strtolower($timezone)) { - case 'gmt': - $lastpostdate = $wpdb->get_var("SELECT post_date_gmt FROM $wpdb->posts WHERE post_date_gmt <= '$now' AND post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1"); - break; - case 'blog': - $lastpostdate = $wpdb->get_var("SELECT post_date FROM $wpdb->posts WHERE post_date_gmt <= '$now' AND post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1"); - break; - case 'server': - $lastpostdate = $wpdb->get_var("SELECT DATE_ADD(post_date_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_date_gmt <= '$now' AND post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1"); - break; - } - $cache_lastpostdate[$timezone] = $lastpostdate; + return $date; +} + +/** + * Convert float number to format based on the locale. + * + * @since 2.3.0 + * + * @global WP_Locale $wp_locale + * + * @param float $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 = 0 ) { + global $wp_locale; + + if ( isset( $wp_locale ) ) { + $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); } else { - $lastpostdate = $cache_lastpostdate[$timezone]; + $formatted = number_format( $number, absint( $decimals ) ); } - return $lastpostdate; -} -function get_lastpostmodified($timezone = 'server') { - global $cache_lastpostmodified, $pagenow, $wpdb; - $add_seconds_blog = get_settings('gmt_offset') * 3600; - $add_seconds_server = date('Z'); - $now = current_time('mysql', 1); - if ( !isset($cache_lastpostmodified[$timezone]) ) { - switch(strtolower($timezone)) { - case 'gmt': - $lastpostmodified = $wpdb->get_var("SELECT post_modified_gmt FROM $wpdb->posts WHERE post_modified_gmt <= '$now' AND post_status = 'publish' ORDER BY post_modified_gmt DESC LIMIT 1"); - break; - case 'blog': - $lastpostmodified = $wpdb->get_var("SELECT post_modified FROM $wpdb->posts WHERE post_modified_gmt <= '$now' AND post_status = 'publish' ORDER BY post_modified_gmt DESC LIMIT 1"); - break; - case 'server': - $lastpostmodified = $wpdb->get_var("SELECT DATE_ADD(post_modified_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_modified_gmt <= '$now' AND post_status = 'publish' ORDER BY post_modified_gmt DESC LIMIT 1"); - break; + /** + * Filters 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 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. + * + * Please note that integers in PHP are limited to 32 bits, unless they are on + * 64 bit architecture, then they have 64 bit size. If you need to place the + * larger size then what PHP integer type will hold, then use a string. It will + * 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. + * + * @since 2.3.0 + * + * @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 = 0 ) { + $quant = array( + 'TB' => TB_IN_BYTES, + 'GB' => GB_IN_BYTES, + 'MB' => MB_IN_BYTES, + 'KB' => KB_IN_BYTES, + 'B' => 1, + ); + + if ( 0 === $bytes ) { + return number_format_i18n( 0, $decimals ) . ' B'; + } + + foreach ( $quant as $unit => $mag ) { + if ( doubleval( $bytes ) >= $mag ) { + return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit; } - $lastpostdate = get_lastpostdate($timezone); - if ( $lastpostdate > $lastpostmodified ) { - $lastpostmodified = $lastpostdate; + } + + return false; +} + +/** + * 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|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 = '' ) { + // 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; + + // The most recent week start day on or before $day. + $start = $day - DAY_IN_SECONDS * ( $weekday - $start_of_week ); + + // $start + 1 week - 1 second. + $end = $start + WEEK_IN_SECONDS - 1; + return compact( 'start', 'end' ); +} + +/** + * Unserialize value only if it was serialized. + * + * @since 2.0.0 + * + * @param string $original Maybe unserialized original, if is needed. + * @return mixed Unserialized data can be any type. + */ +function maybe_unserialize( $original ) { + if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in + return @unserialize( $original ); + return $original; +} + +/** + * Check value to find if it was serialized. + * + * If $data is not an string, then returned value will always be false. + * Serialized data is always a string. + * + * @since 2.0.5 + * + * @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, $strict = true ) { + // if it isn't a string, it isn't serialized. + if ( ! is_string( $data ) ) { + return false; + } + $data = trim( $data ); + if ( 'N;' == $data ) { + return true; + } + if ( strlen( $data ) < 4 ) { + return false; + } + if ( ':' !== $data[1] ) { + return false; + } + if ( $strict ) { + $lastc = substr( $data, -1 ); + if ( ';' !== $lastc && '}' !== $lastc ) { + return false; } - $cache_lastpostmodified[$timezone] = $lastpostmodified; } else { - $lastpostmodified = $cache_lastpostmodified[$timezone]; + $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( $data, '"' ) ) { + return false; + } + // or else fall through + case 'a' : + case 'O' : + return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); + case 'b' : + case 'i' : + case 'd' : + $end = $strict ? '$' : ''; + return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data ); } - return $lastpostmodified; + return false; } -function user_pass_ok($user_login,$user_pass) { - global $cache_userdata; - if ( empty($cache_userdata[$user_login]) ) { - $userdata = get_userdatabylogin($user_login); +/** + * Check whether serialized data is of string type. + * + * @since 2.0.5 + * + * @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 ) ) { + return false; + } + $data = trim( $data ); + 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 { - $userdata = $cache_userdata[$user_login]; + return true; } - return (md5($user_pass) == $userdata->user_pass); } +/** + * Serialize data, if needed. + * + * @since 2.0.5 + * + * @param string|array|object $data Data that might be serialized. + * @return mixed A scalar data + */ +function maybe_serialize( $data ) { + if ( is_array( $data ) || is_object( $data ) ) + return serialize( $data ); + + // 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( $data ); -function get_usernumposts($userid) { - global $wpdb; - $userid = (int) $userid; - return $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_author = '$userid' AND post_status = 'publish'"); + return $data; } +/** + * 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. + * + * @since 0.71 + * + * @global string $post_default_title Default XML-RPC post title. + * + * @param string $content XMLRPC XML Request content + * @return string Post title + */ +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 $post_title; +} -// examine a url (supposedly from this blog) and try to -// determine the post ID it represents. -function url_to_postid($url) { - global $wp_rewrite; - - // First, check to see if there is a 'p=N' or 'page_id=N' to match against - preg_match('#[?&](p|page_id)=(\d+)#', $url, $values); - $id = intval($values[2]); - if ( $id ) return $id; - - // Check to see if we are using rewrite rules - $rewrite = $wp_rewrite->wp_rewrite_rules(); +/** + * 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. + * + * @since 0.71 + * + * @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 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 $post_category; +} - // Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options - if ( empty($rewrite) ) - return 0; +/** + * XMLRPC XML content without title and category elements. + * + * @since 0.71 + * + * @param string $content XML-RPC XML Request content. + * @return string XMLRPC XML Request content without title and category elements. + */ +function xmlrpc_removepostdata( $content ) { + $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content ); + $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content ); + $content = trim( $content ); + return $content; +} - // $url cleanup by Mark Jaquith - // This fixes things like #anchors, ?query=strings, missing 'www.', - // added 'www.', or added 'index.php/' that will mess up our WP_Query - // and return a false negative +/** + * Use RegEx to extract URLs from arbitrary content. + * + * @since 3.7.0 + * + * @param string $content Content to extract URLs from. + * @return array URLs found in passed string. + */ +function wp_extract_urls( $content ) { + preg_match_all( + "#([\"']?)(" + . "(?:([\w-]+:)?//?)" + . "[^\s()<>]+" + . "[.]" + . "(?:" + . "\([\w\d]+\)|" + . "(?:" + . "[^`!()\[\]{};:'\".,<>«»“”‘’\s]|" + . "(?:[:]\d+)?/?" + . ")+" + . ")" + . ")\\1#", + $content, + $post_links + ); - // Get rid of the #anchor - $url_split = explode('#', $url); - $url = $url_split[0]; + $post_links = array_unique( array_map( 'html_entity_decode', $post_links[2] ) ); + + return array_values( $post_links ); +} + +/** + * 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. + * + * @since 1.5.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @param string $content Post Content. + * @param int $post_ID Post ID. + */ +function do_enclose( $content, $post_ID ) { + global $wpdb; - // Get rid of URI ?query=string - $url_split = explode('?', $url); - $url = $url_split[0]; + //TODO: Tidy this ghetto code up and make the debug code optional + include_once( ABSPATH . WPINC . '/class-IXR.php' ); - // Add 'www.' if it is absent and should be there - if ( false !== strpos(get_settings('home'), '://www.') && false === strpos($url, '://www.') ) - $url = str_replace('://', '://www.', $url); + $post_links = array(); - // Strip 'www.' if it is present and shouldn't be - if ( false === strpos(get_settings('home'), '://www.') ) - $url = str_replace('://www.', '://', $url); + $pung = get_enclosed( $post_ID ); - // Strip 'index.php/' if we're not using path info permalinks - if ( false === strpos($rewrite, 'index.php/') ) - $url = str_replace('index.php/', '', $url); + $post_links_temp = wp_extract_urls( $content ); - if ( false !== strpos($url, get_settings('home')) ) { - // Chop off http://domain.com - $url = str_replace(get_settings('home'), '', $url); - } else { - // Chop off /path/to/blog - $home_path = parse_url(get_settings('home')); - $home_path = $home_path['path']; - $url = str_replace($home_path, '', $url); + 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 ); + } } - // Trim leading and lagging slashes - $url = trim($url, '/'); - - $request = $url; + 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; + } + } - // Done with cleanup + /** + * Filters 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 ); + + 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 ) . '%' ) ) ) { - // Look for matches. - $request_match = $request; - foreach ($rewrite as $match => $query) { - // If the requesting file is the anchor of the match, prepend it - // to the path info. - if ( (! empty($url)) && (strpos($match, $url) === 0) ) { - $request_match = $url . '/' . $request; - } + 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'] : ''; + $allowed_types = array( 'video', 'audio' ); - if ( preg_match("!^$match!", $request_match, $matches) ) { - // Got a match. - // Trim the query of everything up to the '?'. - $query = preg_replace("!^.+\?!", '', $query); + // 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 = $mime; + break; + } + } + } + } - // Substitute the substring matches into the query. - eval("\$query = \"$query\";"); - $query = new WP_Query($query); - if ( $query->is_single || $query->is_page ) - return $query->post->ID; - else - return 0; + if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) { + add_post_meta( $post_ID, 'enclosure', "$url\n$len\n$mime\n" ); + } + } } } - return 0; } +/** + * Retrieve HTTP Headers from URL. + * + * @since 1.5.1 + * + * @param string $url URL to retrieve HTTP headers from. + * @param bool $deprecated Not Used. + * @return bool|string False on failure, headers on success. + */ +function wp_get_http_headers( $url, $deprecated = false ) { + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.7.0' ); -function maybe_unserialize($original) { - if ( is_serialized($original) ) // don't attempt to unserialize data that wasn't serialized going in - if ( false !== $gm = @ unserialize($original) ) - return $gm; - return $original; -} - -function maybe_serialize($data) { - if ( is_string($data) ) - $data = trim($data); - elseif ( is_array($data) || is_object($data) ) - return serialize($data); - if ( is_serialized($data) ) - return serialize($data); - return $data; -} + $response = wp_safe_remote_head( $url ); -function is_serialized($data) { - if ( !is_string($data) ) // if it isn't a string, it isn't serialized + if ( is_wp_error( $response ) ) return false; - $data = trim($data); - if ( preg_match("/^[adobis]:[0-9]+:.*[;}]/si",$data) ) // this should fetch all legitimately serialized data - return true; - return false; -} -function is_serialized_string($data) { - if ( !is_string($data) ) // if it isn't a string, it isn't a serialized string - return false; - $data = trim($data); - if ( preg_match("/^s:[0-9]+:.*[;}]/si",$data) ) // this should fetch all serialized strings - return true; - return false; + return wp_remote_retrieve_headers( $response ); } -/* Options functions */ - -// expects $setting to already be SQL-escaped -function get_settings($setting) { - global $wpdb; - - $value = wp_cache_get($setting, '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. + * + * @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. + * + * @return int 1 when new day, 0 if not a new day. + */ +function is_new_day() { + global $currentday, $previousday; + if ( $currentday != $previousday ) + return 1; + else + return 0; +} - if ( false === $value ) { - if ( defined('WP_INSTALLING') ) - $wpdb->hide_errors(); - $row = $wpdb->get_row("SELECT option_value FROM $wpdb->options WHERE option_name = '$setting' LIMIT 1"); - if ( defined('WP_INSTALLING') ) - $wpdb->show_errors(); +/** + * Build URL query based on an associative and, or indexed array. + * + * 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 + * @link https://secure.php.net/manual/en/function.http-build-query.php for more on what + * http_build_query() does. + * + * @param array $data URL-encode key/value pairs. + * @return string URL-encoded string. + */ +function build_query( $data ) { + return _http_build_query( $data, null, '&', '', false ); +} + +/** + * From php.net (modified by Mark Jaquith to behave like the native PHP5 function). + * + * @since 3.2.0 + * @access private + * + * @see https://secure.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. + * + * @return string The query string. + */ +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'; - if( is_object( $row) ) { // Has to be get_row instead of get_var because of funkiness with 0, false, null values - $value = $row->option_value; - wp_cache_set($setting, $value, 'options'); - } else { - return false; - } + if ( is_array($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); } - // If home is not set use siteurl. - if ( 'home' == $setting && '' == $value ) - return get_settings('siteurl'); - - if ( 'siteurl' == $setting || 'home' == $setting || 'category_base' == $setting ) - $value = preg_replace('|/+$|', '', $value); + if ( null === $sep ) + $sep = ini_get('arg_separator.output'); + + return implode($sep, $ret); +} + +/** + * Retrieves a modified URL query string. + * + * You can rebuild the URL and append query variables to the URL query by using this function. + * There are two ways to use this function; either a single key and value, or an associative array. + * + * Using a single key and value: + * + * add_query_arg( 'key', 'value', 'http://example.com' ); + * + * Using an associative array: + * + * add_query_arg( array( + * 'key1' => 'value1', + * 'key2' => 'value2', + * ), 'http://example.com' ); + * + * Omitting the URL from either use results in the current URL being used + * (the value of `$_SERVER['REQUEST_URI']`). + * + * 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 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]; + } - return apply_filters( 'option_' . $setting, maybe_unserialize($value) ); -} + if ( $frag = strstr( $uri, '#' ) ) + $uri = substr( $uri, 0, -strlen( $frag ) ); + else + $frag = ''; -function get_option($option) { - return get_settings($option); -} + if ( 0 === stripos( $uri, 'http://' ) ) { + $protocol = 'http://'; + $uri = substr( $uri, 7 ); + } elseif ( 0 === stripos( $uri, 'https://' ) ) { + $protocol = 'https://'; + $uri = substr( $uri, 8 ); + } else { + $protocol = ''; + } -function get_user_option( $option, $user = 0 ) { - global $wpdb; - - if ( empty($user) ) - $user = wp_get_current_user(); - else - $user = get_userdata($user); + if ( strpos( $uri, '?' ) !== false ) { + list( $base, $query ) = explode( '?', $uri, 2 ); + $base .= '?'; + } elseif ( $protocol || strpos( $uri, '=' ) === false ) { + $base = $uri . '?'; + $query = ''; + } else { + $base = ''; + $query = $uri; + } - if ( isset( $user->{$wpdb->prefix . $option} ) ) // Blog specific - return $user->{$wpdb->prefix . $option}; - elseif ( isset( $user->{$option} ) ) // User specific and cross-blog - return $user->{$option}; - else // Blog global - return get_option( $option ); -} + 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] ] = $args[1]; + } -function form_option($option) { - echo attribute_escape( get_option($option)); -} + foreach ( $qs as $k => $v ) { + if ( $v === false ) + unset( $qs[$k] ); + } -function get_alloptions() { - global $wpdb, $wp_queries; - $wpdb->hide_errors(); - if ( !$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"); + $ret = build_query( $qs ); + $ret = trim( $ret, '?' ); + $ret = preg_replace( '#=(&|$)#', '$1', $ret ); + $ret = $protocol . $base . $ret . $frag; + $ret = rtrim( $ret, '?' ); + return $ret; +} + +/** + * Removes an item or items from a query string. + * + * @since 1.5.0 + * + * @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 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; } - $wpdb->show_errors(); + return add_query_arg( $key, false, $query ); +} + +/** + * Returns an array of single-use query variable names that can be removed from a URL. + * + * @since 4.4.0 + * + * @return array An array of parameters to remove from the URL. + */ +function wp_removable_query_args() { + $removable_query_args = array( + 'activate', + 'activated', + 'approved', + 'deactivate', + 'deleted', + 'disabled', + 'enabled', + 'error', + 'hotkeys_highlight_first', + 'hotkeys_highlight_last', + 'locked', + 'message', + 'same', + 'saved', + 'settings-updated', + 'skipped', + 'spammed', + 'trashed', + 'unspammed', + 'untrashed', + 'update', + 'updated', + 'wp-post-new-reload', + ); - foreach ($options as $option) { - // "When trying to design a foolproof system, - // never underestimate the ingenuity of the fools :)" -- Dougal - if ( 'siteurl' == $option->option_name ) - $option->option_value = preg_replace('|/+$|', '', $option->option_value); - if ( 'home' == $option->option_name ) - $option->option_value = preg_replace('|/+$|', '', $option->option_value); - if ( 'category_base' == $option->option_name ) - $option->option_value = preg_replace('|/+$|', '', $option->option_value); - $value = maybe_unserialize($option->option_value); - $all_options->{$option->option_name} = apply_filters('pre_option_' . $option->option_name, $value); + /** + * Filters 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 ); +} + +/** + * 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 apply_filters('all_options', $all_options); + return $array; } -// expects $option_name to NOT be SQL-escaped -function update_option($option_name, $newvalue) { - global $wpdb; +/** + * HTTP request for URI to retrieve content. + * + * @since 1.5.1 + * + * @see wp_safe_remote_get() + * + * @param string $uri URI/URL of web page to retrieve. + * @return false|string HTTP content. False on failure. + */ +function wp_remote_fopen( $uri ) { + $parsed_url = @parse_url( $uri ); + + if ( !$parsed_url || !is_array( $parsed_url ) ) + return false; - $safe_option_name = $wpdb->escape($option_name); + $options = array(); + $options['timeout'] = 10; - if ( is_string($newvalue) ) - $newvalue = trim($newvalue); + $response = wp_safe_remote_get( $uri, $options ); - // If the new and old values are the same, no need to update. - $oldvalue = get_option($safe_option_name); - if ( $newvalue == $oldvalue ) { + if ( is_wp_error( $response ) ) return false; + + return wp_remote_retrieve_body( $response ); +} + +/** + * Set up the WordPress query. + * + * @since 2.0.0 + * + * @global WP $wp_locale + * @global WP_Query $wp_query + * @global WP_Query $wp_the_query + * + * @param string|array $query_vars Default WP_Query arguments. + */ +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; +} + +/** + * Retrieve the description for the HTTP status. + * + * @since 2.3.0 + * + * @global array $wp_header_to_desc + * + * @param int $code HTTP status code. + * @return string Empty string if not found, or description if found. + */ +function get_status_header_desc( $code ) { + global $wp_header_to_desc; + + $code = absint( $code ); + + if ( !isset( $wp_header_to_desc ) ) { + $wp_header_to_desc = array( + 100 => 'Continue', + 101 => 'Switching Protocols', + 102 => 'Processing', + + 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', + + 300 => 'Multiple Choices', + 301 => 'Moved Permanently', + 302 => 'Found', + 303 => 'See Other', + 304 => 'Not Modified', + 305 => 'Use Proxy', + 306 => 'Reserved', + 307 => 'Temporary Redirect', + 308 => 'Permanent Redirect', + + 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', + 421 => 'Misdirected Request', + 422 => 'Unprocessable Entity', + 423 => 'Locked', + 424 => 'Failed Dependency', + 426 => 'Upgrade Required', + 428 => 'Precondition Required', + 429 => 'Too Many Requests', + 431 => 'Request Header Fields Too Large', + 451 => 'Unavailable For Legal Reasons', + + 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', + ); } - if ( false === $oldvalue ) { - add_option($option_name, $newvalue); - return true; + if ( isset( $wp_header_to_desc[$code] ) ) + return $wp_header_to_desc[$code]; + else + return ''; +} + +/** + * Set HTTP status header. + * + * @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 status_header( $code, $description = '' ) { + if ( ! $description ) { + $description = get_status_header_desc( $code ); } - $_newvalue = $newvalue; - $newvalue = maybe_serialize($newvalue); + if ( empty( $description ) ) { + return; + } - wp_cache_set($option_name, $newvalue, 'options'); + $protocol = wp_get_server_protocol(); + $status_header = "$protocol $code $description"; + if ( function_exists( 'apply_filters' ) ) + + /** + * Filters 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 ); +} + +/** + * Get the header information to prevent caching. + * + * 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 wp_get_nocache_headers() { + $headers = array( + 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT', + 'Cache-Control' => 'no-cache, must-revalidate, max-age=0', + ); - $newvalue = $wpdb->escape($newvalue); - $option_name = $wpdb->escape($option_name); - $wpdb->query("UPDATE $wpdb->options SET option_value = '$newvalue' WHERE option_name = '$option_name'"); - if ( $wpdb->rows_affected == 1 ) { - do_action("update_option_{$option_name}", array('old'=>$oldvalue, 'new'=>$_newvalue)); - return true; + if ( function_exists('apply_filters') ) { + /** + * Filters 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. + * } + */ + $headers = (array) apply_filters( 'nocache_headers', $headers ); } - return false; -} - -function update_user_option( $user_id, $option_name, $newvalue, $global = false ) { - global $wpdb; - if ( !$global ) - $option_name = $wpdb->prefix . $option_name; - return update_usermeta( $user_id, $option_name, $newvalue ); + $headers['Last-Modified'] = false; + return $headers; } -// thx Alex Stapleton, http://alex.vort-x.net/blog/ -// expects $name to NOT be SQL-escaped -function add_option($name, $value = '', $description = '', $autoload = 'yes') { - global $wpdb; - - $safe_name = $wpdb->escape($name); +/** + * Set the headers to prevent caching for the different browsers. + * + * 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. + * + * @since 2.0.0 + * + * @see wp_get_nocache_headers() + */ +function nocache_headers() { + $headers = wp_get_nocache_headers(); - // Make sure the option doesn't already exist - if ( false !== get_option($safe_name) ) - return; + unset( $headers['Last-Modified'] ); - $value = maybe_serialize($value); + // 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' ) ) { + $headers['Last-Modified'] = ''; + break; + } + } + } - wp_cache_set($name, $value, 'options'); + foreach ( $headers as $name => $field_value ) + @header("{$name}: {$field_value}"); +} - $name = $wpdb->escape($name); - $value = $wpdb->escape($value); - $description = $wpdb->escape($description); - $wpdb->query("INSERT INTO $wpdb->options (option_name, option_value, option_description, autoload) VALUES ('$name', '$value', '$description', '$autoload')"); +/** + * Set the headers for caching for 10 days with JavaScript content type. + * + * @since 2.1.0 + */ +function cache_javascript_headers() { + $expiresOffset = 10 * DAY_IN_SECONDS; - return; + 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() + $expiresOffset ) . " GMT" ); } -function delete_option($name) { +/** + * Retrieve the number of database queries during the WordPress execution. + * + * @since 2.0.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @return int Number of database queries. + */ +function get_num_queries() { global $wpdb; - // Get the ID, if no ID then return - $option_id = $wpdb->get_var("SELECT option_id FROM $wpdb->options WHERE option_name = '$name'"); - if ( !$option_id ) return false; - $wpdb->query("DELETE FROM $wpdb->options WHERE option_name = '$name'"); - wp_cache_delete($name, 'options'); - return true; + return $wpdb->num_queries; } -function add_post_meta($post_id, $key, $value, $unique = false) { - global $wpdb, $post_meta_cache; +/** + * Whether input is yes or no. + * + * Must be 'y' to be true. + * + * @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 bool_from_yn( $yn ) { + return ( strtolower( $yn ) == 'y' ); +} + +/** + * Load the feed template from the use of an action hook. + * + * 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. + * + * It is better to only have one hook for each feed. + * + * @since 2.1.0 + * + * @global WP_Query $wp_query Used to tell if the use a comment feed. + */ +function do_feed() { + global $wp_query; - $post_id = (int) $post_id; + // Determine if we are looking at the main comment feed + $is_main_comments_feed = ( $wp_query->is_comment_feed() && ! $wp_query->is_singular() ); - if ( $unique ) { - if ( $wpdb->get_var("SELECT meta_key FROM $wpdb->postmeta WHERE meta_key = '$key' AND post_id = '$post_id'") ) { - return false; - } + /* + * Check the queried object for the existence of posts if it is not a feed for an archive, + * search result, or main comments. By checking for the absense of posts we can prevent rendering the feed + * templates at invalid endpoints. e.g.) /wp-content/plugins/feed/ + */ + if ( ! $wp_query->have_posts() && ! ( $wp_query->is_archive() || $wp_query->is_search() || $is_main_comments_feed ) ) { + wp_die( __( 'ERROR: This is not a valid feed.' ), '', array( 'response' => 404 ) ); } - $post_meta_cache[$post_id][$key][] = $value; + $feed = get_query_var( 'feed' ); - $value = maybe_serialize($value); - $value = $wpdb->escape($value); - - $wpdb->query("INSERT INTO $wpdb->postmeta (post_id,meta_key,meta_value) VALUES ('$post_id','$key','$value')"); - - return true; -} + // Remove the pad, if present. + $feed = preg_replace( '/^_+/', '', $feed ); -function delete_post_meta($post_id, $key, $value = '') { - global $wpdb, $post_meta_cache; + if ( $feed == '' || $feed == 'feed' ) + $feed = get_default_feed(); - $post_id = (int) $post_id; + if ( ! has_action( "do_feed_{$feed}" ) ) { + wp_die( __( 'ERROR: This is not a valid feed template.' ), '', array( 'response' => 404 ) ); + } - if ( empty($value) ) { - $meta_id = $wpdb->get_var("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = '$post_id' AND meta_key = '$key'"); + /** + * Fires once the given feed is loaded. + * + * The dynamic portion of the hook name, `$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 ); +} + +/** + * Load the RDF RSS 0.91 Feed template. + * + * @since 2.1.0 + * + * @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 + * + * @see load_template() + */ +function do_feed_rss() { + load_template( ABSPATH . WPINC . '/feed-rss.php' ); +} + +/** + * Load either the RSS2 comment feed or the RSS2 posts feed. + * + * @since 2.1.0 + * + * @see load_template() + * + * @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. + * + * @since 2.1.0 + * + * @see load_template() + * + * @param bool $for_comments True for the comment feed, false for normal feed. + */ +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' ); +} + +/** + * 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' ); + + /** + * Fires when displaying the robots.txt file. + * + * @since 2.1.0 + */ + do_action( 'do_robotstxt' ); + + $output = "User-agent: *\n"; + $public = get_option( 'blog_public' ); + if ( '0' == $public ) { + $output .= "Disallow: /\n"; } else { - $meta_id = $wpdb->get_var("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = '$post_id' AND meta_key = '$key' AND meta_value = '$value'"); + $site_url = parse_url( site_url() ); + $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; + $output .= "Disallow: $path/wp-admin/\n"; + $output .= "Allow: $path/wp-admin/admin-ajax.php\n"; } - if ( !$meta_id ) - return false; + /** + * Filters 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 ); +} + +/** + * Test whether WordPress is already installed. + * + * 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. + * + * Checks for the 'siteurl' option for whether WordPress is installed. + * + * @since 2.1.0 + * + * @global wpdb $wpdb WordPress database abstraction object. + * + * @return bool Whether the site is already installed. + */ +function is_blog_installed() { + global $wpdb; - if ( empty($value) ) { - $wpdb->query("DELETE FROM $wpdb->postmeta WHERE post_id = '$post_id' AND meta_key = '$key'"); - unset($post_meta_cache[$post_id][$key]); - } else { - $wpdb->query("DELETE FROM $wpdb->postmeta WHERE post_id = '$post_id' AND meta_key = '$key' AND meta_value = '$value'"); - $cache_key = $post_meta_cache[$post_id][$key]; - if ($cache_key) foreach ( $cache_key as $index => $data ) - if ( $data == $value ) - unset($post_meta_cache[$post_id][$key][$index]); + /* + * Check cache first. If options table goes away and we have true + * cached, oh well. + */ + if ( wp_cache_get( 'is_blog_installed' ) ) + return true; + + $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 + $installed = $alloptions['siteurl']; + $wpdb->suppress_errors( $suppress ); - unset($post_meta_cache[$post_id][$key]); + $installed = !empty( $installed ); + wp_cache_set( 'is_blog_installed', $installed ); - return true; -} + if ( $installed ) + return true; -function get_post_meta($post_id, $key, $single = false) { - global $wpdb, $post_meta_cache; + // If visiting repair.php, return true and let it take over. + if ( defined( 'WP_REPAIRING' ) ) + return true; - $post_id = (int) $post_id; + $suppress = $wpdb->suppress_errors(); + + /* + * 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 == $table ) + continue; - if ( isset($post_meta_cache[$post_id][$key]) ) { - if ( $single ) { - return maybe_unserialize( $post_meta_cache[$post_id][$key][0] ); - } else { - return maybe_unserialize( $post_meta_cache[$post_id][$key] ); - } - } + if ( ! $wpdb->get_results( "DESCRIBE $table;" ) ) + continue; - $metalist = $wpdb->get_results("SELECT meta_value FROM $wpdb->postmeta WHERE post_id = '$post_id' AND meta_key = '$key'", ARRAY_N); + // One or more tables exist. We are insane. - $values = array(); - if ( $metalist ) { - foreach ($metalist as $metarow) { - $values[] = $metarow[0]; - } - } + wp_load_translations_early(); - if ( $single ) { - if ( count($values) ) { - $return = maybe_unserialize( $values[0] ); - } else { - return ''; - } - } else { - $return = $values; - } + // Die with a DB error. + $wpdb->error = sprintf( + /* translators: %s: database repair URL */ + __( 'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.' ), + 'maint/repair.php?referrer=is_blog_installed' + ); - return maybe_unserialize($return); -} + dead_db(); + } -function update_post_meta($post_id, $key, $value, $prev_value = '') { - global $wpdb, $post_meta_cache; + $wpdb->suppress_errors( $suppress ); - $post_id = (int) $post_id; + wp_cache_set( 'is_blog_installed', false ); - $original_value = $value; - $value = maybe_serialize($value); - $value = $wpdb->escape($value); + return false; +} - $original_prev = $prev_value; - $prev_value = maybe_serialize($prev_value); - $prev_value = $wpdb->escape($prev_value); +/** + * Retrieve URL with nonce added to URL query. + * + * @since 2.0.4 + * + * @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 wp_nonce_url( $actionurl, $action = -1, $name = '_wpnonce' ) { + $actionurl = str_replace( '&', '&', $actionurl ); + return esc_html( add_query_arg( $name, wp_create_nonce( $action ), $actionurl ) ); +} + +/** + * Retrieve or display nonce hidden field for forms. + * + * 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. + * + * 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. + * + * @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 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 (! $wpdb->get_var("SELECT meta_key FROM $wpdb->postmeta WHERE meta_key = '$key' AND post_id = '$post_id'") ) { + if ( $referer ) + $nonce_field .= wp_referer_field( false ); + + if ( $echo ) + echo $nonce_field; + + return $nonce_field; +} + +/** + * Retrieve or display referer hidden field for forms. + * + * 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 2.0.4 + * + * @param bool $echo Optional. Whether to echo or return the referer field. Default true. + * @return string Referer field HTML markup. + */ +function wp_referer_field( $echo = true ) { + $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. esc_attr( wp_unslash( $_SERVER['REQUEST_URI'] ) ) . '" />'; + + if ( $echo ) + echo $referer_field; + return $referer_field; +} + +/** + * 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 wp_referer_field(), if that was posted already or it will be the + * current page, if it doesn't exist. + * + * @since 2.0.4 + * + * @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 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'] ); + } + $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( $ref ) . '" />'; + if ( $echo ) + echo $orig_referer_field; + return $orig_referer_field; +} + +/** + * Retrieve referer from '_wp_http_referer' or HTTP referer. + * + * If it's the same as the current request URL, will return false. + * + * @since 2.0.4 + * + * @return false|string False on failure. Referer URL on success. + */ +function wp_get_referer() { + if ( ! function_exists( 'wp_validate_redirect' ) ) { return false; } - if ( empty($prev_value) ) { - $wpdb->query("UPDATE $wpdb->postmeta SET meta_value = '$value' WHERE meta_key = '$key' AND post_id = '$post_id'"); - $cache_key = $post_meta_cache[$post_id][$key]; - if ( !empty($cache_key) ) - foreach ($cache_key as $index => $data) - $post_meta_cache[$post_id][$key][$index] = $original_value; - } else { - $wpdb->query("UPDATE $wpdb->postmeta SET meta_value = '$value' WHERE meta_key = '$key' AND post_id = '$post_id' AND meta_value = '$prev_value'"); - $cache_key = $post_meta_cache[$post_id][$key]; - if ( !empty($cache_key) ) - foreach ($cache_key as $index => $data) - if ( $data == $original_prev ) - $post_meta_cache[$post_id][$key][$index] = $original_value; + $ref = wp_get_raw_referer(); + + if ( $ref && $ref !== wp_unslash( $_SERVER['REQUEST_URI'] ) && $ref !== home_url() . wp_unslash( $_SERVER['REQUEST_URI'] ) ) { + return wp_validate_redirect( $ref, false ); } - return true; + return false; } -// Deprecated. Use get_post(). -function get_postdata($postid) { - $post = &get_post($postid); - - $postdata = array ( - 'ID' => $post->ID, - 'Author_ID' => $post->post_author, - 'Date' => $post->post_date, - 'Content' => $post->post_content, - 'Excerpt' => $post->post_excerpt, - 'Title' => $post->post_title, - 'Category' => $post->post_category, - 'post_status' => $post->post_status, - 'comment_status' => $post->comment_status, - 'ping_status' => $post->ping_status, - 'post_password' => $post->post_password, - 'to_ping' => $post->to_ping, - 'pinged' => $post->pinged, - 'post_name' => $post->post_name - ); +/** + * Retrieves unvalidated referer from '_wp_http_referer' or HTTP referer. + * + * Do not use for redirects, use wp_get_referer() instead. + * + * @since 4.5.0 + * + * @return string|false Referer URL on success, false on failure. + */ +function wp_get_raw_referer() { + if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) { + return wp_unslash( $_REQUEST['_wp_http_referer'] ); + } else if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) { + return wp_unslash( $_SERVER['HTTP_REFERER'] ); + } - return $postdata; + return false; } -// Retrieves post data given a post ID or post object. -// Handles post caching. -function &get_post(&$post, $output = OBJECT) { - global $post_cache, $wpdb; +/** + * Retrieve original referer that was posted, if it exists. + * + * @since 2.0.4 + * + * @return string|false False if no original referer or original referer if set. + */ +function wp_get_original_referer() { + if ( ! empty( $_REQUEST['_wp_original_http_referer'] ) && function_exists( 'wp_validate_redirect' ) ) + return wp_validate_redirect( wp_unslash( $_REQUEST['_wp_original_http_referer'] ), false ); + return false; +} - if ( empty($post) ) { - if ( isset($GLOBALS['post']) ) - $_post = & $GLOBALS['post']; - else - $_post = null; - } elseif ( is_object($post) ) { - if ( 'static' == $post->post_status ) - return get_page($post, $output); - if ( !isset($post_cache[$post->ID]) ) - $post_cache[$post->ID] = &$post; - $_post = & $post_cache[$post->ID]; - } else { - $post = (int) $post; - if ( $_post = wp_cache_get($post, 'pages') ) - return get_page($_post, $output); - elseif ( isset($post_cache[$post]) ) - $_post = & $post_cache[$post]; - else { - $query = "SELECT * FROM $wpdb->posts WHERE ID = '$post' LIMIT 1"; - $_post = & $wpdb->get_row($query); - if ( 'static' == $_post->post_status ) - return get_page($_post, $output); - $post_cache[$post] = & $_post; - } - } - - if ( defined(WP_IMPORTING) ) - unset($post_cache); - - if ( $output == OBJECT ) { - return $_post; - } elseif ( $output == ARRAY_A ) { - return get_object_vars($_post); - } elseif ( $output == ARRAY_N ) { - return array_values(get_object_vars($_post)); - } else { - return $_post; +/** + * Recursive directory creation based on full path. + * + * Will attempt to set permissions on folders. + * + * @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 wp_mkdir_p( $target ) { + $wrapper = null; + + // Strip the protocol. + if ( wp_is_stream( $target ) ) { + list( $wrapper, $target ) = explode( '://', $target, 2 ); } -} -function &get_children($post = 0, $output = OBJECT) { - global $post_cache, $wpdb; + // From php.net/mkdir user contributed notes. + $target = str_replace( '//', '/', $target ); - if ( empty($post) ) { - if ( isset($GLOBALS['post']) ) - $post_parent = & $GLOBALS['post']->post_parent; - else - return false; - } elseif ( is_object($post) ) { - $post_parent = $post->post_parent; - } else { - $post_parent = $post; + // Put the wrapper back on the target. + if ( $wrapper !== null ) { + $target = $wrapper . '://' . $target; } - $post_parent = (int) $post_parent; + /* + * 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 = '/'; + + if ( file_exists( $target ) ) + return @is_dir( $target ); + + // 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 ); + } - $query = "SELECT * FROM $wpdb->posts WHERE post_parent = $post_parent"; + // Get the permission bits. + if ( $stat = @stat( $target_parent ) ) { + $dir_perms = $stat['mode'] & 0007777; + } else { + $dir_perms = 0777; + } - $children = $wpdb->get_results($query); + if ( @mkdir( $target, $dir_perms, true ) ) { - if ( $children ) { - foreach ( $children as $key => $child ) { - $post_cache[$child->ID] =& $children[$key]; - $kids[$child->ID] =& $children[$key]; + /* + * 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 ); + } } - } else { - return false; - } - if ( $output == OBJECT ) { - return $kids; - } elseif ( $output == ARRAY_A ) { - foreach ( $kids as $kid ) - $weeuns[$kid->ID] = get_object_vars($kids[$kid->ID]); - return $weeuns; - } elseif ( $output == ARRAY_N ) { - foreach ( $kids as $kid ) - $babes[$kid->ID] = array_values(get_object_vars($kids[$kid->ID])); - return $babes; - } else { - return $kids; + return true; } + + return false; } -function set_page_path($page) { - $page->fullpath = '/' . $page->post_name; - $path = $page->fullpath; - $curpage = $page; - while ($curpage->post_parent != 0) { - $curpage = get_page($curpage->post_parent); - $path = '/' . $curpage->post_name . $path; - } - - $page->fullpath = $path; +/** + * Test if a give filesystem path is absolute. + * + * For example, '/foo/bar', or 'c:\windows'. + * + * @since 2.5.0 + * + * @param string $path File path. + * @return bool True if path is absolute, false is not absolute. + */ +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; - return $page; -} + if ( strlen($path) == 0 || $path[0] == '.' ) + return false; -// Retrieves page data given a page ID or page object. -// Handles page caching. -function &get_page(&$page, $output = OBJECT) { - global $wpdb; + // Windows allows absolute paths like this. + if ( preg_match('#^[a-zA-Z]:\\\\#', $path) ) + return true; - if ( empty($page) ) { - if ( isset($GLOBALS['page']) ) { - $_page = & $GLOBALS['page']; - wp_cache_add($_page->ID, $_page, 'pages'); - } else { - $_page = null; - } - } elseif ( is_object($page) ) { - if ( 'static' != $page->post_status ) - return get_post($page, $output); - wp_cache_add($page->ID, $page, 'pages'); - $_page = $page; - } else { - $page = (int) $page; - if ( isset($GLOBALS['page']) && ($page == $GLOBALS['page']->ID) ) { - $_page = & $GLOBALS['page']; - wp_cache_add($_page->ID, $_page, 'pages'); - } elseif ( $_page = $GLOBALS['post_cache'][$page] ) { - return get_post($page, $output); - } elseif ( $_page = wp_cache_get($page, 'pages') ) { - // Got it. - } else { - $query = "SELECT * FROM $wpdb->posts WHERE ID= '$page' LIMIT 1"; - $_page = & $wpdb->get_row($query); - if ( 'static' != $_page->post_status ) - return get_post($_page, $output); - wp_cache_add($_page->ID, $_page, 'pages'); - } + // A path starting with / or \ is absolute; anything else is relative. + return ( $path[0] == '/' || $path[0] == '\\' ); +} + +/** + * Join two filesystem paths together. + * + * For example, 'give me $path relative to $base'. If the $path is absolute, + * then it the full path is returned. + * + * @since 2.5.0 + * + * @param string $base Base path. + * @param string $path Path relative to $base. + * @return string The path with the base or absolute path. + */ +function path_join( $base, $path ) { + if ( path_is_absolute($path) ) + return $path; + + return rtrim($base, '/') . '/' . ltrim($path, '/'); +} + +/** + * Normalize a filesystem path. + * + * On windows systems, replaces backslashes with forward slashes + * and forces upper-case drive letters. + * Allows for two leading slashes for Windows network shares, but + * ensures that all other duplicate slashes are reduced to a single. + * + * @since 3.9.0 + * @since 4.4.0 Ensures upper-case drive letters on Windows systems. + * @since 4.5.0 Allows for Windows network shares. + * + * @param string $path Path to normalize. + * @return string Normalized path. + */ +function wp_normalize_path( $path ) { + $path = str_replace( '\\', '/', $path ); + $path = preg_replace( '|(?<=.)/+|', '/', $path ); + if ( ':' === substr( $path, 1, 1 ) ) { + $path = ucfirst( $path ); } - - if (!isset($_page->fullpath)) { - $_page = set_page_path($_page); - wp_cache_replace($_page->cat_ID, $_page, 'pages'); + return $path; +} + +/** + * Determine a writable directory for temporary files. + * + * 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 string Writable temporary directory. + */ +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 ); } - if ( $output == OBJECT ) { - return $_page; - } elseif ( $output == ARRAY_A ) { - return get_object_vars($_page); - } elseif ( $output == ARRAY_N ) { - return array_values(get_object_vars($_page)); - } else { - return $_page; + $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/'; +} + +/** + * Determine if a directory is writable. + * + * 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 $path Path to check for write-ability. + * @return bool Whether the path is writable. + */ +function wp_is_writable( $path ) { + if ( 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) ) + return win_is_writable( $path ); + else + return @is_writable( $path ); +} + +/** + * Workaround for Windows bug in is_writable() function + * + * 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. + * + * @since 2.8.0 + * + * @see https://bugs.php.net/bug.php?id=27609 + * @see https://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 win_is_writable( $path ) { + + 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' ); } + // 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( $path ); + return true; } -function set_category_path($cat) { - $cat->fullpath = '/' . $cat->category_nicename; - $path = $cat->fullpath; - $curcat = $cat; - while ($curcat->category_parent != 0) { - $curcat = get_category($curcat->category_parent); - $path = '/' . $curcat->category_nicename . $path; +/** + * Retrieves uploads directory information. + * + * Same as wp_upload_dir() but "light weight" as it doesn't attempt to create the uploads directory. + * Intended for use in themes, when only 'basedir' and 'baseurl' are needed, generally in all cases + * when not uploading files. + * + * @since 4.5.0 + * + * @see wp_upload_dir() + * + * @return array See wp_upload_dir() for description. + */ +function wp_get_upload_dir() { + return wp_upload_dir( null, false ); +} + +/** + * Get an array containing the current upload directory's path and url. + * + * 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. + * + * 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. + * + * 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. + * + * 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. + * + * 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' - false or error message. + * + * @since 2.0.0 + * @uses _wp_upload_dir() + * + * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null. + * @param bool $create_dir Optional. Whether to check and create the uploads directory. + * Default true for backward compatibility. + * @param bool $refresh_cache Optional. Whether to refresh the cache. Default false. + * @return array See above for description. + */ +function wp_upload_dir( $time = null, $create_dir = true, $refresh_cache = false ) { + static $cache = array(), $tested_paths = array(); + + $key = sprintf( '%d-%s', get_current_blog_id(), (string) $time ); + + if ( $refresh_cache || empty( $cache[ $key ] ) ) { + $cache[ $key ] = _wp_upload_dir( $time ); } - - $cat->fullpath = $path; - - return $cat; -} -// Retrieves category data given a category ID or category object. -// Handles category caching. -function &get_category(&$category, $output = OBJECT) { - global $wpdb; + /** + * Filters 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', $cache[ $key ] ); + + if ( $create_dir ) { + $path = $uploads['path']; + + if ( array_key_exists( $path, $tested_paths ) ) { + $uploads['error'] = $tested_paths[ $path ]; + } else { + if ( ! wp_mkdir_p( $path ) ) { + if ( 0 === strpos( $uploads['basedir'], ABSPATH ) ) { + $error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir']; + } else { + $error_path = basename( $uploads['basedir'] ) . $uploads['subdir']; + } - if ( empty($category) ) - return null; + $uploads['error'] = sprintf( + /* translators: %s: directory path */ + __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), + esc_html( $error_path ) + ); + } - if ( is_object($category) ) { - wp_cache_add($category->cat_ID, $category, 'category'); - $_category = $category; - } else { - $category = (int) $category; - if ( ! $_category = wp_cache_get($category, 'category') ) { - $_category = $wpdb->get_row("SELECT * FROM $wpdb->categories WHERE cat_ID = '$category' LIMIT 1"); - wp_cache_add($category, $_category, 'category'); + $tested_paths[ $path ] = $uploads['error']; } } - $_category = apply_filters('get_category', $_category); - - if ( !isset($_category->fullpath) ) { - $_category = set_category_path($_category); - wp_cache_replace($_category->cat_ID, $_category, 'category'); - } - - if ( $output == OBJECT ) { - return $_category; - } elseif ( $output == ARRAY_A ) { - return get_object_vars($_category); - } elseif ( $output == ARRAY_N ) { - return array_values(get_object_vars($_category)); + return $uploads; +} + +/** + * A non-filtered, non-cached version of wp_upload_dir() that doesn't check the path. + * + * @access private + * + * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null. + * @return array See wp_upload_dir() + */ +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 { - return $_category; + $dir = $upload_path; } -} -// Retrieves comment data given a comment ID or comment object. -// Handles comment caching. -function &get_comment(&$comment, $output = OBJECT) { - global $comment_cache, $wpdb; + if ( !$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 ) . $upload_path; + } - if ( empty($comment) ) - return null; + /* + * 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( $siteurl ) . UPLOADS; + } - if ( is_object($comment) ) { - if ( !isset($comment_cache[$comment->comment_ID]) ) - $comment_cache[$comment->comment_ID] = &$comment; - $_comment = & $comment_cache[$comment->comment_ID]; - } else { - $comment = (int) $comment; - if ( !isset($comment_cache[$comment]) ) { - $_comment = $wpdb->get_row("SELECT * FROM $wpdb->comments WHERE comment_ID = '$comment' LIMIT 1"); - $comment_cache[$comment->comment_ID] = & $_comment; - } else { - $_comment = & $comment_cache[$comment]; + // 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'; } } - if ( $output == OBJECT ) { - return $_comment; - } elseif ( $output == ARRAY_A ) { - return get_object_vars($_comment); - } elseif ( $output == ARRAY_N ) { - return array_values(get_object_vars($_comment)); - } else { - return $_comment; + $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/$m"; } -} -function get_catname($cat_ID) { - $category = &get_category($cat_ID); - return $category->cat_name; -} + $dir .= $subdir; + $url .= $subdir; -function get_all_category_ids() { - global $wpdb; - - if ( ! $cat_ids = wp_cache_get('all_category_ids', 'category') ) { - $cat_ids = $wpdb->get_col("SELECT cat_ID FROM $wpdb->categories"); - wp_cache_add('all_category_ids', $cat_ids, 'category'); - } - - return $cat_ids; + return array( + 'path' => $dir, + 'url' => $url, + 'subdir' => $subdir, + 'basedir' => $basedir, + 'baseurl' => $baseurl, + 'error' => false, + ); } -function get_all_page_ids() { - global $wpdb; - - if ( ! $page_ids = wp_cache_get('all_page_ids', 'pages') ) { - $page_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE post_status='static'"); - wp_cache_add('all_page_ids', $page_ids, 'pages'); +/** + * 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. + * + * 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 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. + $ext = pathinfo( $filename, PATHINFO_EXTENSION ); + $name = pathinfo( $filename, PATHINFO_BASENAME ); + if ( $ext ) { + $ext = '.' . $ext; } - - return $page_ids; -} - -function gzip_compression() { - if ( !get_settings('gzipcompression') ) return false; - if ( extension_loaded('zlib') ) { - ob_start('ob_gzhandler'); + // 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 callback if supplied. + */ + if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) { + $filename = call_user_func( $unique_filename_callback, $dir, $name, $ext ); + } else { + $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; + } -// functions to count the page generation time (from phpBB2) -// ( or just any time between timer_start() and timer_stop() ) + /** + * Filters the result when generating a unique file name. + * + * @since 4.5.0 + * + * @param string $filename Unique file name. + * @param string $ext File extension, eg. ".png". + * @param string $dir Directory path. + * @param callable|null $unique_filename_callback Callback function that generates the unique file name. + */ + return apply_filters( 'wp_unique_filename', $filename2, $ext, $dir, $unique_filename_callback ); + } -function timer_stop($display = 0, $precision = 3) { //if called like timer_stop(1), will echo $timetotal - global $timestart, $timeend; - $mtime = microtime(); - $mtime = explode(' ',$mtime); - $mtime = $mtime[1] + $mtime[0]; - $timeend = $mtime; - $timetotal = $timeend-$timestart; - $r = number_format($timetotal, $precision); - if ( $display ) - echo $r; - return $r; -} + while ( file_exists( $dir . "/$filename" ) ) { + if ( '' == "$number$ext" ) { + $filename = "$filename-" . ++$number; + } else { + $filename = str_replace( array( "-$number$ext", "$number$ext" ), "-" . ++$number . $ext, $filename ); + } + } + } -function weblog_ping($server = '', $path = '') { - global $wp_version; - include_once (ABSPATH . WPINC . '/class-IXR.php'); + /** This filter is documented in wp-includes/functions.php */ + return apply_filters( 'wp_unique_filename', $filename, $ext, $dir, $unique_filename_callback ); +} + +/** + * 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. + * + * 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. + * + * The permissions will be set on the new file automatically by this function. + * + * @since 2.0.0 + * + * @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 wp_upload_bits( $name, $deprecated, $bits, $time = null ) { + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.0.0' ); + + if ( empty( $name ) ) + return array( 'error' => __( 'Empty filename' ) ); + + $wp_filetype = wp_check_filetype( $name ); + if ( ! $wp_filetype['ext'] && ! current_user_can( 'unfiltered_upload' ) ) + return array( 'error' => __( 'Invalid file type' ) ); + + $upload = wp_upload_dir( $time ); + + if ( $upload['error'] !== false ) + return $upload; + + /** + * Filters 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; + } - // using a timeout of 3 seconds should be enough to cover slow servers - $client = new IXR_Client($server, ((!strlen(trim($path)) || ('/' == $path)) ? false : $path)); - $client->timeout = 3; - $client->useragent .= ' -- WordPress/'.$wp_version; + $filename = wp_unique_filename( $upload['path'], $name ); - // when set to true, this outputs debug messages by itself - $client->debug = false; - $home = trailingslashit( get_option('home') ); - if ( !$client->query('weblogUpdates.extendedPing', get_settings('blogname'), $home, get_bloginfo('rss2_url') ) ) // then try a normal ping - $client->query('weblogUpdates.ping', get_settings('blogname'), $home); -} + $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( + /* translators: %s: directory path */ + __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), + $error_path + ); + return array( 'error' => $message ); + } -function generic_ping($post_id = 0) { - $services = get_settings('ping_sites'); - $services = preg_replace("|(\s)+|", '$1', $services); // Kill dupe lines - $services = trim($services); - if ( '' != $services ) { - $services = explode("\n", $services); - foreach ($services as $service) { - weblog_ping($service); + $ifp = @ fopen( $new_file, 'wb' ); + if ( ! $ifp ) + return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) ); + + @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 the file type based on the extension name. + * + * @since 2.5.0 + * + * @param string $ext The extension to search. + * @return string|void The file type, example: audio, video, document, spreadsheet, etc. + */ +function wp_ext2type( $ext ) { + $ext = strtolower( $ext ); + + $ext2type = wp_get_ext_types(); + 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; } } - return $post_id; -} - -// Send a Trackback -function trackback($trackback_url, $title, $excerpt, $ID) { - global $wpdb, $wp_version; - - if ( empty($trackback_url) ) - return; - - $title = urlencode($title); - $excerpt = urlencode($excerpt); - $blog_name = urlencode(get_settings('blogname')); - $tb_url = $trackback_url; - $url = urlencode(get_permalink($ID)); - $query_string = "title=$title&url=$url&blog_name=$blog_name&excerpt=$excerpt"; - $trackback_url = parse_url($trackback_url); - $http_request = 'POST ' . $trackback_url['path'] . ($trackback_url['query'] ? '?'.$trackback_url['query'] : '') . " HTTP/1.0\r\n"; - $http_request .= 'Host: '.$trackback_url['host']."\r\n"; - $http_request .= 'Content-Type: application/x-www-form-urlencoded; charset='.get_settings('blog_charset')."\r\n"; - $http_request .= 'Content-Length: '.strlen($query_string)."\r\n"; - $http_request .= "User-Agent: WordPress/" . $wp_version; - $http_request .= "\r\n\r\n"; - $http_request .= $query_string; - if ( '' == $trackback_url['port'] ) - $trackback_url['port'] = 80; - $fs = @fsockopen($trackback_url['host'], $trackback_url['port'], $errno, $errstr, 4); - @fputs($fs, $http_request); -/* - $debug_file = 'trackback.log'; - $fp = fopen($debug_file, 'a'); - fwrite($fp, "\n*****\nRequest:\n\n$http_request\n\nResponse:\n\n"); - while(!@feof($fs)) { - fwrite($fp, @fgets($fs, 4096)); - } - fwrite($fp, "\n\n"); - fclose($fp); -*/ - @fclose($fs); - - $tb_url = addslashes( $tb_url ); - $wpdb->query("UPDATE $wpdb->posts SET pinged = CONCAT(pinged, '\n', '$tb_url') WHERE ID = '$ID'"); - return $wpdb->query("UPDATE $wpdb->posts SET to_ping = TRIM(REPLACE(to_ping, '$tb_url', '')) WHERE ID = '$ID'"); -} - -function make_url_footnote($content) { - preg_match_all('/<a(.+?)href=\"(.+?)\"(.*?)>(.+?)<\/a>/', $content, $matches); - $j = 0; - for ($i=0; $i<count($matches[0]); $i++) { - $links_summary = (!$j) ? "\n" : $links_summary; - $j++; - $link_match = $matches[0][$i]; - $link_number = '['.($i+1).']'; - $link_url = $matches[2][$i]; - $link_text = $matches[4][$i]; - $content = str_replace($link_match, $link_text.' '.$link_number, $content); - $link_url = ((strtolower(substr($link_url,0,7)) != 'http://') && (strtolower(substr($link_url,0,8)) != 'https://')) ? get_settings('home') . $link_url : $link_url; - $links_summary .= "\n".$link_number.' '.$link_url; - } - $content = strip_tags($content); - $content .= $links_summary; - return $content; -} + return compact( 'ext', 'type' ); +} + +/** + * Attempt to determine the real file type of a file. + * + * If unable to, the file name extension will be used to determine type. + * + * 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. + * + * Currently this function only supports renaming images validated via wp_get_image_mime(). + * + * @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_check_filetype_and_ext( $file, $filename, $mimes = null ) { + $proper_filename = false; + + // 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' ); + } + // Validate image types. + if ( $type && 0 === strpos( $type, 'image/' ) ) { + + // Attempt to figure out what type of image it actually is + $real_mime = wp_get_image_mime( $file ); + + if ( ! $real_mime ) { + $type = $ext = false; + } elseif ( $real_mime != $type ) { + /** + * Filters 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[ $real_mime ] ) ) { + $filename_parts = explode( '.', $filename ); + array_pop( $filename_parts ); + $filename_parts[] = $mime_to_ext[ $real_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']; + } else { + $type = $ext = false; + } + } + } elseif ( function_exists( 'finfo_file' ) ) { + // Use finfo_file if available to validate non-image files. + $finfo = finfo_open( FILEINFO_MIME_TYPE ); + $real_mime = finfo_file( $finfo, $file ); + finfo_close( $finfo ); + + // If the extension does not match the file's real type, return false. + if ( $real_mime !== $type ) { + $type = $ext = false; + } + } -function xmlrpc_getposttitle($content) { - global $post_default_title; - if ( preg_match('/<title>(.+?)<\/title>/is', $content, $matchtitle) ) { - $post_title = $matchtitle[0]; - $post_title = preg_replace('/<title>/si', '', $post_title); - $post_title = preg_replace('/<\/title>/si', '', $post_title); - } else { - $post_title = $post_default_title; + /** + * Filters 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 ); +} + +/** + * Returns the real mime type of an image file. + * + * This depends on exif_imagetype() or getimagesize() to determine real mime types. + * + * @since 4.7.1 + * + * @param string $file Full path to the file. + * @return string|false The actual mime type or false if the type cannot be determined. + */ +function wp_get_image_mime( $file ) { + /* + * Use exif_imagetype() to check the mimetype if available or fall back to + * getimagesize() if exif isn't avaialbe. If either function throws an Exception + * we assume the file could not be validated. + */ + try { + if ( is_callable( 'exif_imagetype' ) ) { + $mime = image_type_to_mime_type( exif_imagetype( $file ) ); + } elseif ( function_exists( 'getimagesize' ) ) { + $imagesize = getimagesize( $file ); + $mime = ( isset( $imagesize['mime'] ) ) ? $imagesize['mime'] : false; + } else { + $mime = false; + } + } catch ( Exception $e ) { + $mime = false; } - return $post_title; -} -function xmlrpc_getpostcategory($content) { - global $post_default_category; - if ( preg_match('/<category>(.+?)<\/category>/is', $content, $matchcat) ) { - $post_category = trim($matchcat[1], ','); - $post_category = explode(',', $post_category); + return $mime; +} + +/** + * Retrieve list of mime types and file extensions. + * + * @since 3.5.0 + * @since 4.2.0 Support was added for GIMP (xcf) files. + * + * @return array Array of mime types keyed by the file extension regex corresponding to those types. + */ +function wp_get_mime_types() { + /** + * Filters 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 {@see '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', + ) ); +} + +/** + * Retrieves the list of common file extensions and their types. + * + * @since 4.6.0 + * + * @return array Array of file extensions types keyed by the type of file. + */ +function wp_get_ext_types() { + + /** + * Filters 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. + */ + return 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' ), + ) ); +} + +/** + * Retrieve list of allowed mime types and file extensions. + * + * @since 2.8.6 + * + * @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 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'] ); + + /** + * Filters 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 ); +} + +/** + * 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. + * + * @since 2.0.4 + * + * @param string $action The nonce action. + */ +function wp_nonce_ays( $action ) { + if ( 'log-out' == $action ) { + $html = sprintf( + /* translators: %s: site name */ + __( 'You are attempting to log out of %s' ), + get_bloginfo( 'name' ) + ); + $html .= '</p><p>'; + $redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : ''; + $html .= sprintf( + /* translators: %s: logout URL */ + __( 'Do you really want to <a href="%s">log out</a>?' ), + wp_logout_url( $redirect_to ) + ); } else { - $post_category = $post_default_category; + $html = __( 'Are you sure you want to do this?' ); + if ( wp_get_referer() ) { + $html .= '</p><p>'; + $html .= sprintf( '<a href="%s">%s</a>', + esc_url( remove_query_arg( 'updated', wp_get_referer() ) ), + __( 'Please try again.' ) + ); + } } - return $post_category; -} -function xmlrpc_removepostdata($content) { - $content = preg_replace('/<title>(.+?)<\/title>/si', '', $content); - $content = preg_replace('/<category>(.+?)<\/category>/si', '', $content); - $content = trim($content); - return $content; -} + wp_die( $html, __( 'WordPress Failure Notice' ), 403 ); +} + +/** + * Kill WordPress execution and display HTML message with error message. + * + * This function complements the `die()` PHP function. The difference is that + * HTML will be displayed to the user. It is recommended to use this function + * only when the execution should not continue any further. It is not recommended + * to call this function very often, and try to handle as many errors as possible + * silently or more gracefully. + * + * As a shorthand, the desired HTTP response code may be passed as an integer to + * the `$title` parameter (the default title would apply) or the `$args` parameter. + * + * @since 2.0.4 + * @since 4.1.0 The `$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 WP_Error object, + * and not an Ajax or XML-RPC request, 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 200 for Ajax requests, 500 otherwise. + * @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 is_rtl(). + * } + */ +function wp_die( $message = '', $title = '', $args = array() ) { + + if ( is_int( $args ) ) { + $args = array( 'response' => $args ); + } elseif ( is_int( $title ) ) { + $args = array( 'response' => $title ); + $title = ''; + } -function debug_fopen($filename, $mode) { - global $debug; - if ( $debug == 1 ) { - $fp = fopen($filename, $mode); - return $fp; + if ( wp_doing_ajax() ) { + /** + * Filters the 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 ) { + /** + * Filters the 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 { - return false; + /** + * Filters the callback for killing WordPress execution for all non-Ajax, non-XML-RPC requests. + * + * @since 3.0.0 + * + * @param callable $function Callback function name. + */ + $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); } -} -function debug_fwrite($fp, $string) { - global $debug; - if ( $debug == 1 ) { - fwrite($fp, $string); + call_user_func( $function, $message, $title, $args ); +} + +/** + * Kills WordPress execution and display HTML message with error message. + * + * This is the default handler for wp_die if you want a custom one for your + * site then you can overload using the {@see 'wp_die_handler'} filter in wp_die(). + * + * @since 3.0.0 + * @access private + * + * @param string|WP_Error $message Error message or WP_Error object. + * @param string $title Optional. Error title. Default empty. + * @param string|array $args Optional. Arguments to control behavior. Default empty array. + */ +function _default_wp_die_handler( $message, $title = '', $args = array() ) { + $defaults = array( 'response' => 500 ); + $r = wp_parse_args($args, $defaults); + + $have_gettext = function_exists('__'); + + 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>"; } -} -function debug_fclose($fp) { - global $debug; - if ( $debug == 1 ) { - fclose($fp); + 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>"; } -} -function spawn_pinger() { - global $wpdb, $wp_version; - $doping = false; - if ( $wpdb->get_var("SELECT ID FROM $wpdb->posts WHERE TRIM(to_ping) != '' LIMIT 1") ) - $doping = true; - - if ( $wpdb->get_var("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_pingme' OR meta_key = '_encloseme' LIMIT 1") ) - $doping = true; - - if ( substr(php_sapi_name(), 0, 3) == 'cgi' ) - return $doping; - - if ( $doping ) { - $ping_url = get_settings('siteurl') .'/wp-admin/execute-pings.php'; - $parts = parse_url($ping_url); - $argyle = @ fsockopen($parts['host'], $_SERVER['SERVER_PORT'], $errno, $errstr, 0.01); - if ( $argyle ) - fputs($argyle, "GET {$parts['path']}?time=".time()." HTTP/1.0\r\nHost: {$_SERVER['HTTP_HOST']}\r\nUser-Agent: WordPress/{$wp_version}\r\n\r\n"); - } -} - -function do_enclose( $content, $post_ID ) { - global $wp_version, $wpdb; - include_once (ABSPATH . WPINC . '/class-IXR.php'); + if ( ! did_action( 'admin_head' ) ) : + if ( !headers_sent() ) { + status_header( $r['response'] ); + nocache_headers(); + header( 'Content-Type: text/html; charset=utf-8' ); + } - $log = debug_fopen(ABSPATH . '/enclosures.log', 'a'); - $post_links = array(); - debug_fwrite($log, 'BEGIN '.date('YmdHis', time())."\n"); + if ( empty($title) ) + $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error'; - $pung = get_enclosed( $post_ID ); + $text_direction = 'ltr'; + if ( isset($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"> + <?php + if ( function_exists( 'wp_no_robots' ) ) { + wp_no_robots(); + } + ?> + <title><?php echo $title ?> + + + + + + + + 5 ) - return false; - - $parts = parse_url( $url ); - $file = $parts['path'] . ($parts['query'] ? '?'.$parts['query'] : ''); - $host = $parts['host']; - if ( !isset( $parts['port'] ) ) - $parts['port'] = 80; - - $head = "HEAD $file HTTP/1.1\r\nHOST: $host\r\nUser-Agent: WordPress/" . $wp_version . "\r\n\r\n"; - - $fp = @fsockopen($host, $parts['port'], $err_num, $err_msg, 3); - if ( !$fp ) - return false; - - $response = ''; - fputs( $fp, $head ); - while ( !feof( $fp ) && strpos( $response, "\r\n\r\n" ) == false ) - $response .= fgets( $fp, 2048 ); - fclose( $fp ); - preg_match_all('/(.*?): (.*)\r/', $response, $matches); - $count = count($matches[1]); - for ( $i = 0; $i < $count; $i++) { - $key = strtolower($matches[1][$i]); - $headers["$key"] = $matches[2][$i]; +/** + * Kill WordPress execution and display XML message with error message. + * + * This is the handler for wp_die when processing XMLRPC requests. + * + * @since 3.2.0 + * @access private + * + * @global wp_xmlrpc_server $wp_xmlrpc_server + * + * @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 _xmlrpc_wp_die_handler( $message, $title = '', $args = array() ) { + global $wp_xmlrpc_server; + $defaults = array( 'response' => 500 ); + + $r = wp_parse_args($args, $defaults); + + if ( $wp_xmlrpc_server ) { + $error = new IXR_Error( $r['response'] , $message); + $wp_xmlrpc_server->output( $error->getXml() ); } - - preg_match('/.*([0-9]{3}).*/', $response, $return); - $headers['response'] = $return[1]; // HTTP response code eg 204, 200, 404 - - $code = $headers['response']; - if ( ('302' == $code || '301' == $code) && isset($headers['location']) ) - return wp_get_http_headers( $headers['location'], ++$red ); - - return $headers; + die(); } -// Deprecated. Use the new post loop. -function start_wp() { - global $wp_query, $post; +/** + * Kill WordPress ajax execution. + * + * This is the handler for wp_die when processing Ajax requests. + * + * @since 3.4.0 + * @access private + * + * @param string $message Error message. + * @param string $title Optional. Error title (unused). Default empty. + * @param string|array $args Optional. Arguments to control behavior. Default empty array. + */ +function _ajax_wp_die_handler( $message, $title = '', $args = array() ) { + $defaults = array( + 'response' => 200, + ); + $r = wp_parse_args( $args, $defaults ); - // Since the old style loop is being used, advance the query iterator here. - $wp_query->next_post(); + if ( ! headers_sent() && null !== $r['response'] ) { + status_header( $r['response'] ); + } - setup_postdata($post); + if ( is_scalar( $message ) ) + die( (string) $message ); + die( '0' ); +} + +/** + * Kill WordPress execution. + * + * This is the handler for wp_die when processing APP requests. + * + * @since 3.4.0 + * @access private + * + * @param string $message Optional. Response to print. Default empty. + */ +function _scalar_wp_die_handler( $message = '' ) { + if ( is_scalar( $message ) ) + die( (string) $message ); + die(); } -// Setup global post data. -function setup_postdata($post) { - global $id, $postdata, $authordata, $day, $page, $pages, $multipage, $more, $numpages, $wp_query; - global $pagenow; - - $id = $post->ID; - - $authordata = get_userdata($post->post_author); - - $day = mysql2date('d.m.y', $post->post_date); - $currentmonth = mysql2date('m', $post->post_date); - $numpages = 1; - $page = get_query_var('page'); - if ( !$page ) - $page = 1; - if ( is_single() || is_page() ) - $more = 1; - $content = $post->post_content; - if ( preg_match('//', $content) ) { - if ( $page > 1 ) - $more = 1; - $multipage = 1; - $content = str_replace("\n\n", '', $content); - $content = str_replace("\n", '', $content); - $content = str_replace("\n", '', $content); - $pages = explode('', $content); - $numpages = count($pages); +/** + * Encode a variable into JSON, with some sanity checks. + * + * @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_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 { - $pages[0] = $post->post_content; - $multipage = 0; + $args = array( $data ); } - return true; -} -// Setup global user vars. Used by set_current_user() for back compat. -function setup_userdata($user_id = '') { - global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity; + // Prepare the data for JSON serialization. + $args[0] = _wp_json_prepare_data( $data ); - if ( '' == $user_id ) - $user = wp_get_current_user(); - else - $user = new WP_User($user_id); + $json = @call_user_func_array( 'json_encode', $args ); - if ( 0 == $user->ID ) - return; - - $userdata = $user->data; - $user_login = $user->user_login; - $user_level = $user->user_level; - $user_ID = $user->ID; - $user_email = $user->user_email; - $user_url = $user->user_url; - $user_pass_md5 = md5($user->user_pass); - $user_identity = $user->display_name; -} - -function is_new_day() { - global $day, $previousday; - if ( $day != $previousday ) { - return(1); - } else { - return(0); + // 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 $json; } -} -// Filters: these are the core of WP's plugin architecture - -function merge_filters($tag) { - global $wp_filter; - if ( isset($wp_filter['all']) ) { - foreach ($wp_filter['all'] as $priority => $functions) { - if ( isset($wp_filter[$tag][$priority]) ) - $wp_filter[$tag][$priority] = array_merge($wp_filter['all'][$priority], $wp_filter[$tag][$priority]); - else - $wp_filter[$tag][$priority] = array_merge($wp_filter['all'][$priority], array()); - $wp_filter[$tag][$priority] = array_unique($wp_filter[$tag][$priority]); - } + try { + $args[0] = _wp_json_sanity_check( $data, $depth ); + } catch ( Exception $e ) { + return false; } - if ( isset($wp_filter[$tag]) ) - uksort( $wp_filter[$tag], "strnatcasecmp" ); -} - -function apply_filters($tag, $string) { - global $wp_filter; - - $args = array_slice(func_get_args(), 2); - - merge_filters($tag); - - if ( !isset($wp_filter[$tag]) ) { - return $string; + return call_user_func_array( 'json_encode', $args ); +} + +/** + * Perform sanity checks on data that shall be encoded to JSON. + * + * @ignore + * @since 4.1.0 + * @access private + * + * @see wp_json_encode() + * + * @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_json_sanity_check( $data, $depth ) { + if ( $depth < 0 ) { + throw new Exception( 'Reached depth limit' ); } - foreach ($wp_filter[$tag] as $priority => $functions) { - if ( !is_null($functions) ) { - foreach($functions as $function) { - - $all_args = array_merge(array($string), $args); - $function_name = $function['function']; - $accepted_args = $function['accepted_args']; - - if ( $accepted_args == 1 ) - $the_args = array($string); - elseif ( $accepted_args > 1 ) - $the_args = array_slice($all_args, 0, $accepted_args); - elseif ( $accepted_args == 0 ) - $the_args = NULL; - else - $the_args = $all_args; - $string = call_user_func_array($function_name, $the_args); + 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; } - } - } - return $string; -} -function add_filter($tag, $function_to_add, $priority = 10, $accepted_args = 1) { - global $wp_filter; - - // check that we don't already have the same filter at the same priority - if ( isset($wp_filter[$tag]["$priority"]) ) { - foreach($wp_filter[$tag]["$priority"] as $filter) { - // uncomment if we want to match function AND accepted_args - // if ( $filter == array($function, $accepted_args) ) { - if ( $filter['function'] == $function_to_add ) { - return true; + // 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; } } - } - - // So the format is wp_filter['tag']['array of priorities']['array of ['array (functions, accepted_args)]'] - $wp_filter[$tag]["$priority"][] = array('function'=>$function_to_add, 'accepted_args'=>$accepted_args); - return true; -} - -function remove_filter($tag, $function_to_remove, $priority = 10, $accepted_args = 1) { - global $wp_filter; + } 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 = $id; + } - // rebuild the list of filters - if ( isset($wp_filter[$tag]["$priority"]) ) { - $new_function_list = array(); - foreach($wp_filter[$tag]["$priority"] as $filter) { - if ( $filter['function'] != $function_to_remove ) { - $new_function_list[] = $filter; + 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; } } - $wp_filter[$tag]["$priority"] = $new_function_list; + } elseif ( is_string( $data ) ) { + return _wp_json_convert_string( $data ); + } else { + return $data; } - return true; -} - -// The *_action functions are just aliases for the *_filter functions, they take special strings instead of generic content - -function do_action($tag, $arg = '') { - global $wp_filter; - $extra_args = array_slice(func_get_args(), 2); - if ( is_array($arg) ) - $args = array_merge($arg, $extra_args); - else - $args = array_merge(array($arg), $extra_args); - merge_filters($tag); - - if ( !isset($wp_filter[$tag]) ) { - return; + return $output; +} + +/** + * Convert a string to UTF-8, so that it can be safely encoded to JSON. + * + * @ignore + * @since 4.1.0 + * @access private + * + * @see _wp_json_sanity_check() + * + * @staticvar bool $use_mb + * + * @param string $string The string which is to be converted. + * @return string The checked string. + */ +function _wp_json_convert_string( $string ) { + static $use_mb = null; + if ( is_null( $use_mb ) ) { + $use_mb = function_exists( 'mb_convert_encoding' ); } - foreach ($wp_filter[$tag] as $priority => $functions) { - if ( !is_null($functions) ) { - foreach($functions as $function) { - - $function_name = $function['function']; - $accepted_args = $function['accepted_args']; - - if ( $accepted_args == 1 ) { - if ( is_array($arg) ) - $the_args = $arg; - else - $the_args = array($arg); - } elseif ( $accepted_args > 1 ) { - $the_args = array_slice($args, 0, $accepted_args); - } elseif ( $accepted_args == 0 ) { - $the_args = NULL; - } else { - $the_args = $args; - } - $string = call_user_func_array($function_name, $the_args); - } + 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( $string, true ); } } -function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1) { - add_filter($tag, $function_to_add, $priority, $accepted_args); -} - -function remove_action($tag, $function_to_remove, $priority = 10, $accepted_args = 1) { - remove_filter($tag, $function_to_remove, $priority, $accepted_args); -} - -function get_page_uri($page_id) { - $page = get_page($page_id); - $uri = urldecode($page->post_name); - - // A page cannot be it's own parent. - if ( $page->post_parent == $page->ID ) - return $uri; - - while ($page->post_parent != 0) { - $page = get_page($page->post_parent); - $uri = urldecode($page->post_name) . "/" . $uri; +/** + * Prepares response data to be serialized to JSON. + * + * This supports the JsonSerializable interface for PHP 5.2-5.3 as well. + * + * @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 _wp_json_prepare_data( $data ) { + if ( ! defined( 'WP_JSON_SERIALIZE_COMPATIBLE' ) || WP_JSON_SERIALIZE_COMPATIBLE === false ) { + return $data; } - return $uri; -} - -function get_posts($args) { - global $wpdb; - parse_str($args, $r); - if ( !isset($r['numberposts']) ) - $r['numberposts'] = 5; - if ( !isset($r['offset']) ) - $r['offset'] = 0; - if ( !isset($r['category']) ) - $r['category'] = ''; - if ( !isset($r['orderby']) ) - $r['orderby'] = 'post_date'; - if ( !isset($r['order']) ) - $r['order'] = 'DESC'; - - $now = current_time('mysql'); - - $posts = $wpdb->get_results( - "SELECT DISTINCT * FROM $wpdb->posts " . - ( empty( $r['category'] ) ? "" : ", $wpdb->post2cat " ) . - " WHERE post_date <= '$now' AND (post_status = 'publish') ". - ( empty( $r['category'] ) ? "" : "AND $wpdb->posts.ID = $wpdb->post2cat.post_id AND $wpdb->post2cat.category_id = " . $r['category']. " " ) . - " GROUP BY $wpdb->posts.ID ORDER BY " . $r['orderby'] . " " . $r['order'] . " LIMIT " . $r['offset'] . ',' . $r['numberposts'] ); - - update_post_caches($posts); - - return $posts; -} - -function &query_posts($query) { - global $wp_query; - return $wp_query->query($query); -} + 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( $data ) ) { + return null; + } -function update_post_cache(&$posts) { - global $post_cache; + if ( $data instanceof JsonSerializable ) { + $data = $data->jsonSerialize(); + } else { + $data = get_object_vars( $data ); + } - if ( !$posts ) - return; + // Now, pass the array (or whatever was returned from jsonSerialize through). + return _wp_json_prepare_data( $data ); - for ($i = 0; $i < count($posts); $i++) { - $post_cache[$posts[$i]->ID] = &$posts[$i]; + default: + return null; } } -function clean_post_cache($id) { - global $post_cache; - - if ( isset( $post_cache[$id] ) ) - unset( $post_cache[$id] ); -} - -function update_page_cache(&$pages) { - global $page_cache; - - if ( !$pages ) - return; +/** + * Send a JSON response back to an Ajax request. + * + * @since 3.5.0 + * @since 4.7.0 The `$status_code` parameter was added. + * + * @param mixed $response Variable (usually an array or object) to encode as JSON, + * then print and die. + * @param int $status_code The HTTP status code to output. + */ +function wp_send_json( $response, $status_code = null ) { + @header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) ); + if ( null !== $status_code ) { + status_header( $status_code ); + } + echo wp_json_encode( $response ); - for ($i = 0; $i < count($pages); $i++) { - $page_cache[$pages[$i]->ID] = &$pages[$i]; - wp_cache_add($pages[$i]->ID, $pages[$i], 'pages'); + if ( wp_doing_ajax() ) { + wp_die( '', '', array( + 'response' => null, + ) ); + } else { + die; } } +/** + * Send a JSON response back to an Ajax request, indicating success. + * + * @since 3.5.0 + * @since 4.7.0 The `$status_code` parameter was added. + * + * @param mixed $data Data to encode as JSON, then print and die. + * @param int $status_code The HTTP status code to output. + */ +function wp_send_json_success( $data = null, $status_code = null ) { + $response = array( 'success' => true ); + + if ( isset( $data ) ) + $response['data'] = $data; + + wp_send_json( $response, $status_code ); +} + +/** + * Send a JSON response back to an Ajax request, indicating failure. + * + * If the `$data` parameter is a 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 3.5.0 + * @since 4.1.0 The `$data` parameter is now processed if a WP_Error object is passed in. + * @since 4.7.0 The `$status_code` parameter was added. + * + * @param mixed $data Data to encode as JSON, then print and die. + * @param int $status_code The HTTP status code to output. + */ +function wp_send_json_error( $data = null, $status_code = 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' => $message ); + } + } -function clean_page_cache($id) { - global $page_cache; - - if ( isset( $page_cache[$id] ) ) - unset( $page_cache[$id] ); -} - -function update_post_category_cache($post_ids) { - global $wpdb, $category_cache; + $response['data'] = $result; + } else { + $response['data'] = $data; + } + } - if ( empty($post_ids) ) - return; + wp_send_json( $response, $status_code ); +} + +/** + * Checks that a JSONP callback is a valid JavaScript callback. + * + * Only allows alphanumeric characters and the dot character in callback + * function names. This helps to mitigate XSS attacks caused by directly + * outputting user input. + * + * @since 4.6.0 + * + * @param string $callback Supplied JSONP callback function. + * @return bool True if valid callback, otherwise false. + */ +function wp_check_jsonp_callback( $callback ) { + if ( ! is_string( $callback ) ) { + return false; + } - if ( is_array($post_ids) ) - $post_ids = implode(',', $post_ids); + preg_replace( '/[^\w\.]/', '', $callback, -1, $illegal_char_count ); + + return 0 === $illegal_char_count; +} + +/** + * Retrieve the WordPress home page URL. + * + * If the constant named 'WP_HOME' exists, then it will be used and returned + * by the function. This can be used to counter the redirection on your local + * development environment. + * + * @since 2.2.0 + * @access private + * + * @see WP_HOME + * + * @param string $url URL for the home location. + * @return string Homepage location. + */ +function _config_wp_home( $url = '' ) { + if ( defined( 'WP_HOME' ) ) + return untrailingslashit( WP_HOME ); + return $url; +} + +/** + * Retrieve the WordPress site URL. + * + * If the constant named 'WP_SITEURL' is defined, then the value in that + * constant will always be returned. This can be used for debugging a site + * on your localhost while not having to change the database to your URL. + * + * @since 2.2.0 + * @access private + * + * @see WP_SITEURL + * + * @param string $url URL to set the WordPress site location. + * @return string The WordPress Site URL. + */ +function _config_wp_siteurl( $url = '' ) { + if ( defined( 'WP_SITEURL' ) ) + return untrailingslashit( WP_SITEURL ); + return $url; +} + +/** + * Delete the fresh site option. + * + * @since 4.7.0 + * @access private + */ +function _delete_option_fresh_site() { + update_option( 'fresh_site', 0 ); +} + +/** + * Set the localized direction for MCE plugin. + * + * Will only set the direction to 'rtl', if the WordPress locale has + * the text direction set to 'rtl'. + * + * Fills in the 'directionality' setting, enables the 'directionality' + * plugin, and adds the 'ltr' button to 'toolbar1', formerly + * 'theme_advanced_buttons1' array keys. These keys are then returned + * in the $mce_init (TinyMCE settings) array. + * + * @since 2.1.0 + * @access private + * + * @param array $mce_init MCE settings array. + * @return array Direction set for 'rtl', if needed by locale. + */ +function _mce_set_direction( $mce_init ) { + if ( is_rtl() ) { + $mce_init['directionality'] = 'rtl'; + $mce_init['rtl_ui'] = true; + + if ( ! empty( $mce_init['plugins'] ) && strpos( $mce_init['plugins'], 'directionality' ) === false ) { + $mce_init['plugins'] .= ',directionality'; + } - $dogs = $wpdb->get_results("SELECT post_id, category_id FROM $wpdb->post2cat WHERE post_id IN ($post_ids)"); + if ( ! empty( $mce_init['toolbar1'] ) && ! preg_match( '/\bltr\b/', $mce_init['toolbar1'] ) ) { + $mce_init['toolbar1'] .= ',ltr'; + } + } - if ( empty($dogs) ) + return $mce_init; +} + + +/** + * Convert smiley code to the icon graphic file equivalent. + * + * You can turn off smilies, by going to the write setting screen and unchecking + * the box, or by setting 'use_smilies' option to false or removing the option. + * + * Plugins may override the default smiley list by setting the $wpsmiliestrans + * to an array, with the key the code the blogger types in and the value the + * image file. + * + * The $wp_smiliessearch global is for the regular expression and is set each + * time the function is called. + * + * The full list of smilies can be found in the function and won't be listed in + * the description. Probably should create a Codex page for it, so that it is + * available. + * + * @global array $wpsmiliestrans + * @global array $wp_smiliessearch + * + * @since 2.2.0 + */ +function smilies_init() { + global $wpsmiliestrans, $wp_smiliessearch; + + // don't bother setting up smilies if they are disabled + if ( !get_option( 'use_smilies' ) ) return; - - foreach ($dogs as $catt) - $category_cache[$catt->post_id][$catt->category_id] = &get_category($catt->category_id); -} -function update_post_caches(&$posts) { - global $post_cache, $category_cache, $comment_count_cache, $post_meta_cache; - global $wpdb; + if ( !isset( $wpsmiliestrans ) ) { + $wpsmiliestrans = array( + ':mrgreen:' => 'mrgreen.png', + ':neutral:' => "\xf0\x9f\x98\x90", + ':twisted:' => "\xf0\x9f\x98\x88", + ':arrow:' => "\xe2\x9e\xa1", + ':shock:' => "\xf0\x9f\x98\xaf", + ':smile:' => "\xf0\x9f\x99\x82", + ':???:' => "\xf0\x9f\x98\x95", + ':cool:' => "\xf0\x9f\x98\x8e", + ':evil:' => "\xf0\x9f\x91\xbf", + ':grin:' => "\xf0\x9f\x98\x80", + ':idea:' => "\xf0\x9f\x92\xa1", + ':oops:' => "\xf0\x9f\x98\xb3", + ':razz:' => "\xf0\x9f\x98\x9b", + ':roll:' => "\xf0\x9f\x99\x84", + ':wink:' => "\xf0\x9f\x98\x89", + ':cry:' => "\xf0\x9f\x98\xa5", + ':eek:' => "\xf0\x9f\x98\xae", + ':lol:' => "\xf0\x9f\x98\x86", + ':mad:' => "\xf0\x9f\x98\xa1", + ':sad:' => "\xf0\x9f\x99\x81", + '8-)' => "\xf0\x9f\x98\x8e", + '8-O' => "\xf0\x9f\x98\xaf", + ':-(' => "\xf0\x9f\x99\x81", + ':-)' => "\xf0\x9f\x99\x82", + ':-?' => "\xf0\x9f\x98\x95", + ':-D' => "\xf0\x9f\x98\x80", + ':-P' => "\xf0\x9f\x98\x9b", + ':-o' => "\xf0\x9f\x98\xae", + ':-x' => "\xf0\x9f\x98\xa1", + ':-|' => "\xf0\x9f\x98\x90", + ';-)' => "\xf0\x9f\x98\x89", + // This one transformation breaks regular text with frequency. + // '8)' => "\xf0\x9f\x98\x8e", + '8O' => "\xf0\x9f\x98\xaf", + ':(' => "\xf0\x9f\x99\x81", + ':)' => "\xf0\x9f\x99\x82", + ':?' => "\xf0\x9f\x98\x95", + ':D' => "\xf0\x9f\x98\x80", + ':P' => "\xf0\x9f\x98\x9b", + ':o' => "\xf0\x9f\x98\xae", + ':x' => "\xf0\x9f\x98\xa1", + ':|' => "\xf0\x9f\x98\x90", + ';)' => "\xf0\x9f\x98\x89", + ':!:' => "\xe2\x9d\x97", + ':?:' => "\xe2\x9d\x93", + ); + } - // No point in doing all this work if we didn't match any posts. - if ( !$posts ) + /** + * Filters all the smilies. + * + * This filter must be added before `smilies_init` is run, as + * it is normally only run once to setup the smilies regex. + * + * @since 4.7.0 + * + * @param array $wpsmiliestrans List of the smilies. + */ + $wpsmiliestrans = apply_filters('smilies', $wpsmiliestrans); + + if (count($wpsmiliestrans) == 0) { return; - - // Get the categories for all the posts - for ($i = 0; $i < count($posts); $i++) { - $post_id_array[] = $posts[$i]->ID; - $post_cache[$posts[$i]->ID] = &$posts[$i]; - $comment_count_cache[$posts[$i]->ID] = $posts[$i]->comment_count; } - $post_id_list = implode(',', $post_id_array); + /* + * NOTE: we sort the smilies in reverse key order. This is to make sure + * we match the longest possible smilie (:???: vs :?) as the regular + * expression used below is first-match + */ + krsort($wpsmiliestrans); - update_post_category_cache($post_id_list); + $spaces = wp_spaces_regexp(); - // Get post-meta info - if ( $meta_list = $wpdb->get_results("SELECT post_id, meta_key, meta_value FROM $wpdb->postmeta WHERE post_id IN($post_id_list) ORDER BY post_id, meta_key", ARRAY_A) ) { - // Change from flat structure to hierarchical: - $post_meta_cache = array(); - foreach ($meta_list as $metarow) { - $mpid = (int) $metarow['post_id']; - $mkey = $metarow['meta_key']; - $mval = $metarow['meta_value']; + // Begin first "subpattern" + $wp_smiliessearch = '/(?<=' . $spaces . '|^)'; - // Force subkeys to be array type: - if ( !isset($post_meta_cache[$mpid]) || !is_array($post_meta_cache[$mpid]) ) - $post_meta_cache[$mpid] = array(); - if ( !isset($post_meta_cache[$mpid]["$mkey"]) || !is_array($post_meta_cache[$mpid]["$mkey"]) ) - $post_meta_cache[$mpid]["$mkey"] = array(); + $subchar = ''; + foreach ( (array) $wpsmiliestrans as $smiley => $img ) { + $firstchar = substr($smiley, 0, 1); + $rest = substr($smiley, 1); - // Add a value to the current pid/key: - $post_meta_cache[$mpid][$mkey][] = $mval; + // new subpattern? + if ($firstchar != $subchar) { + if ($subchar != '') { + $wp_smiliessearch .= ')(?=' . $spaces . '|$)'; // End previous "subpattern" + $wp_smiliessearch .= '|(?<=' . $spaces . '|^)'; // Begin another "subpattern" + } + $subchar = $firstchar; + $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:'; + } else { + $wp_smiliessearch .= '|'; } + $wp_smiliessearch .= preg_quote($rest, '/'); } -} - -function update_category_cache() { - return true; -} - -function wp_head() { - do_action('wp_head'); -} - -function wp_footer() { - do_action('wp_footer'); -} - -function is_single ($post = '') { - global $wp_query; - - if ( !$wp_query->is_single ) - return false; - - if ( empty( $post) ) - return true; - - $post_obj = $wp_query->get_queried_object(); - - if ( $post == $post_obj->ID ) - return true; - elseif ( $post == $post_obj->post_title ) - return true; - elseif ( $post == $post_obj->post_name ) - return true; - - return false; -} - -function is_page ($page = '') { - global $wp_query; - if ( !$wp_query->is_page ) - return false; - - if ( empty($page) ) - return true; - - $page_obj = $wp_query->get_queried_object(); - - if ( $page == $page_obj->ID ) - return true; - elseif ( $page == $page_obj->post_title ) - return true; - else if ( $page == $page_obj->post_name ) - return true; - - return false; -} - -function is_attachment () { - global $wp_query; - - return $wp_query->is_attachment; -} - -function is_preview() { - global $wp_query; - - return $wp_query->is_preview; -} - -function is_archive () { - global $wp_query; - - return $wp_query->is_archive; -} - -function is_date () { - global $wp_query; - - return $wp_query->is_date; -} - -function is_year () { - global $wp_query; - - return $wp_query->is_year; -} - -function is_month () { - global $wp_query; - - return $wp_query->is_month; -} - -function is_day () { - global $wp_query; - - return $wp_query->is_day; -} - -function is_time () { - global $wp_query; + $wp_smiliessearch .= ')(?=' . $spaces . '|$)/m'; + +} + +/** + * Merge user defined arguments into defaults array. + * + * This function is used throughout WordPress to allow for both string or array + * to be merged into another array. + * + * @since 2.2.0 + * @since 2.3.0 `$args` can now also be an object. + * + * @param string|array|object $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 = '' ) { + if ( is_object( $args ) ) + $r = get_object_vars( $args ); + elseif ( is_array( $args ) ) + $r =& $args; + else + wp_parse_str( $args, $r ); - return $wp_query->is_time; + if ( is_array( $defaults ) ) + return array_merge( $defaults, $r ); + return $r; } -function is_author ($author = '') { - global $wp_query; - - if ( !$wp_query->is_author ) - return false; - - if ( empty($author) ) - return true; - - $author_obj = $wp_query->get_queried_object(); - - if ( $author == $author_obj->ID ) - return true; - elseif ( $author == $author_obj->nickname ) - return true; - elseif ( $author == $author_obj->user_nicename ) - return true; - - return false; -} +/** + * Clean up an array, comma- or space-separated list of IDs. + * + * @since 3.0.0 + * + * @param array|string $list List of ids. + * @return array Sanitized array of IDs. + */ +function wp_parse_id_list( $list ) { + if ( !is_array($list) ) + $list = preg_split('/[\s,]+/', $list); + + return array_unique(array_map('absint', $list)); +} + +/** + * Clean up an array, comma- or space-separated list of slugs. + * + * @since 4.7.0 + * + * @param array|string $list List of slugs. + * @return array Sanitized array of slugs. + */ +function wp_parse_slug_list( $list ) { + if ( ! is_array( $list ) ) { + $list = preg_split( '/[\s,]+/', $list ); + } -function is_category ($category = '') { - global $wp_query; + foreach ( $list as $key => $value ) { + $list[ $key ] = sanitize_title( $value ); + } - if ( !$wp_query->is_category ) + return array_unique( $list ); +} + +/** + * Extract a slice of an array, given a list of keys. + * + * @since 3.1.0 + * + * @param array $array The original array. + * @param array $keys The list of keys. + * @return array The array slice. + */ +function wp_array_slice_assoc( $array, $keys ) { + $slice = array(); + foreach ( $keys as $key ) + if ( isset( $array[ $key ] ) ) + $slice[ $key ] = $array[ $key ]; + + return $slice; +} + +/** + * Determines if the variable is a numeric-indexed array. + * + * @since 4.4.0 + * + * @param mixed $data Variable to check. + * @return bool Whether the variable is a list. + */ +function wp_is_numeric_array( $data ) { + if ( ! is_array( $data ) ) { return false; + } - if ( empty($category) ) - return true; - - $cat_obj = $wp_query->get_queried_object(); - - if ( $category == $cat_obj->cat_ID ) - return true; - else if ( $category == $cat_obj->cat_name ) - return true; - elseif ( $category == $cat_obj->category_nicename ) - return true; - - return false; -} - -function is_search () { - global $wp_query; - - return $wp_query->is_search; -} - -function is_feed () { - global $wp_query; - - return $wp_query->is_feed; -} - -function is_trackback () { - global $wp_query; - - return $wp_query->is_trackback; -} - -function is_admin () { - global $wp_query; - - return ( $wp_query->is_admin || strstr($_SERVER['REQUEST_URI'], 'wp-admin/') ); -} - -function is_home () { - global $wp_query; - - return $wp_query->is_home; -} - -function is_404 () { - global $wp_query; - - return $wp_query->is_404; -} - -function is_comments_popup () { - global $wp_query; - - return $wp_query->is_comments_popup; -} - -function is_paged () { - global $wp_query; - - return $wp_query->is_paged; -} - -function in_the_loop() { - global $wp_query; - - return $wp_query->in_the_loop; -} - -function get_query_var($var) { - global $wp_query; - - return $wp_query->get($var); -} + $keys = array_keys( $data ); + $string_keys = array_filter( $keys, 'is_string' ); + return count( $string_keys ) === 0; +} + +/** + * Filters a list of objects, based on a set of key => value arguments. + * + * @since 3.0.0 + * @since 4.7.0 Uses WP_List_Util class. + * + * @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; 'not' means no elements may + * 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_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) { + if ( ! is_array( $list ) ) { + return array(); + } -function have_posts() { - global $wp_query; + $util = new WP_List_Util( $list ); - return $wp_query->have_posts(); -} + $util->filter( $args, $operator ); -function rewind_posts() { - global $wp_query; + if ( $field ) { + $util->pluck( $field ); + } - return $wp_query->rewind_posts(); -} + return $util->get_output(); +} + +/** + * Filters a list of objects, based on a set of key => value arguments. + * + * @since 3.1.0 + * @since 4.7.0 Uses WP_List_Util class. + * + * @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(); + } -function the_post() { - global $wp_query; + $util = new WP_List_Util( $list ); + return $util->filter( $args, $operator ); +} + +/** + * Pluck a certain field out of each object in a list. + * + * This has the same functionality and prototype of + * array_column() (PHP 5.5) but also supports objects. + * + * @since 3.1.0 + * @since 4.0.0 $index_key parameter added. + * @since 4.7.0 Uses WP_List_Util class. + * + * @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 wp_list_pluck( $list, $field, $index_key = null ) { + $util = new WP_List_Util( $list ); + return $util->pluck( $field, $index_key ); +} + +/** + * Sorts a list of objects, based on one or more orderby arguments. + * + * @since 4.7.0 + * + * @param array $list An array of objects to filter. + * @param string|array $orderby Optional. Either the field name to order by or an array + * of multiple orderby fields as $orderby => $order. + * @param string $order Optional. Either 'ASC' or 'DESC'. Only used if $orderby + * is a string. + * @param bool $preserve_keys Optional. Whether to preserve keys. Default false. + * @return array The sorted array. + */ +function wp_list_sort( $list, $orderby = array(), $order = 'ASC', $preserve_keys = false ) { + if ( ! is_array( $list ) ) { + return array(); + } - $wp_query->the_post(); -} + $util = new WP_List_Util( $list ); + return $util->sort( $orderby, $order, $preserve_keys ); +} + +/** + * 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() { + /** + * Filters 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; + } -function get_theme_root() { - return apply_filters('theme_root', ABSPATH . "wp-content/themes"); -} + require_once( ABSPATH . WPINC . '/default-widgets.php' ); -function get_theme_root_uri() { - return apply_filters('theme_root_uri', get_settings('siteurl') . "/wp-content/themes", get_settings('siteurl')); + add_action( '_admin_menu', 'wp_widgets_add_menu' ); } -function get_stylesheet() { - return apply_filters('stylesheet', get_settings('stylesheet')); -} +/** + * Append the Widgets menu to the themes main menu. + * + * @since 2.2.0 + * + * @global array $submenu + */ +function wp_widgets_add_menu() { + global $submenu; -function get_stylesheet_directory() { - $stylesheet = get_stylesheet(); - $stylesheet_dir = get_theme_root() . "/$stylesheet"; - return apply_filters('stylesheet_directory', $stylesheet_dir, $stylesheet); -} + if ( ! current_theme_supports( 'widgets' ) ) + return; -function get_stylesheet_directory_uri() { - $stylesheet = rawurlencode( get_stylesheet() ); - $stylesheet_dir_uri = get_theme_root_uri() . "/$stylesheet"; - return apply_filters('stylesheet_directory_uri', $stylesheet_dir_uri, $stylesheet); -} + $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(); +} + +/** + * Load custom DB error or display WordPress DB error. + * + * If a file exists in the wp-content directory named db-error.php, then it will + * be loaded instead of displaying the WordPress DB error. If it is not found, + * then the WordPress DB error will be displayed instead. + * + * The WordPress DB error sets the HTTP status header to 500 to try to prevent + * search engines from caching the message. Custom DB messages should do the + * same. + * + * This function was backported to WordPress 2.3.2, but originally was added + * in WordPress 2.5.0. + * + * @since 2.3.2 + * + * @global wpdb $wpdb WordPress database abstraction object. + */ +function dead_db() { + global $wpdb; -function get_stylesheet_uri() { - $stylesheet_dir_uri = get_stylesheet_directory_uri(); - $stylesheet_uri = $stylesheet_dir_uri . "/style.css"; - return apply_filters('stylesheet_uri', $stylesheet_uri, $stylesheet_dir_uri); -} + wp_load_translations_early(); -function get_template() { - $template = get_settings('template'); - if (!file_exists(get_theme_root() . "/$template")) { //works for dirs too - update_option('template', 'default'); - update_option('stylesheet', 'default'); + // Load custom DB error template, if present. + if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) { + require_once( WP_CONTENT_DIR . '/db-error.php' ); + die(); } - return apply_filters('template', get_settings('template')); -} -function get_template_directory() { - $template = get_template(); - $template_dir = get_theme_root() . "/$template"; - return apply_filters('template_directory', $template_dir, $template); -} + // If installing or in the admin, provide the verbose message. + if ( wp_installing() || defined( 'WP_ADMIN' ) ) + wp_die($wpdb->error); -function get_template_directory_uri() { - $template = get_template(); - $template_dir_uri = get_theme_root_uri() . "/$template"; - return apply_filters('template_directory_uri', $template_dir_uri, $template); -} - -function get_theme_data($theme_file) { - $theme_data = implode('', file($theme_file)); - preg_match("|Theme Name:(.*)|i", $theme_data, $theme_name); - preg_match("|Theme URI:(.*)|i", $theme_data, $theme_uri); - preg_match("|Description:(.*)|i", $theme_data, $description); - preg_match("|Author:(.*)|i", $theme_data, $author_name); - preg_match("|Author URI:(.*)|i", $theme_data, $author_uri); - preg_match("|Template:(.*)|i", $theme_data, $template); - if ( preg_match("|Version:(.*)|i", $theme_data, $version) ) - $version = trim($version[1]); - else - $version =''; - if ( preg_match("|Status:(.*)|i", $theme_data, $status) ) - $status = trim($status[1]); - else - $status = 'publish'; - - $description = wptexturize(trim($description[1])); - - $name = $theme_name[1]; - $name = trim($name); - $theme = $name; - - if ( '' == $author_uri[1] ) { - $author = trim($author_name[1]); - } else { - $author = '' . trim($author_name[1]) . ''; - } + // Otherwise, be terse. + status_header( 500 ); + nocache_headers(); + header( 'Content-Type: text/html; charset=utf-8' ); +?> + +> + + + <?php _e( 'Database Error' ); ?> - return array('Name' => $name, 'Title' => $theme, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template[1], 'Status' => $status); + + +

+ + +read()) !== false) { - if ( is_dir($theme_root . '/' . $theme_dir) && is_readable($theme_root . '/' . $theme_dir) ) { - if ( $theme_dir{0} == '.' || $theme_dir == '..' || $theme_dir == 'CVS' ) { - continue; - } - $stylish_dir = @ dir($theme_root . '/' . $theme_dir); - $found_stylesheet = false; - while (($theme_file = $stylish_dir->read()) !== false) { - if ( $theme_file == 'style.css' ) { - $theme_files[] = $theme_dir . '/' . $theme_file; - $found_stylesheet = true; - break; - } - } - if ( !$found_stylesheet ) { - $wp_broken_themes[$theme_dir] = array('Name' => $theme_dir, 'Title' => $theme_dir, 'Description' => __('Stylesheet is missing.')); - } +/** + * Convert a value to non-negative integer. + * + * @since 2.5.0 + * + * @param mixed $maybeint Data you wish to have converted to a non-negative integer. + * @return int A non-negative integer. + */ +function absint( $maybeint ) { + return abs( intval( $maybeint ) ); +} + +/** + * Mark a function as deprecated and inform when it has been used. + * + * There is a {@see '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. + * + * The current behavior is to trigger a user error if `WP_DEBUG` is true. + * + * This function is to be used in every function that is deprecated. + * + * @since 2.5.0 + * @access private + * + * @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. Default null. + */ +function _deprecated_function( $function, $version, $replacement = null ) { + + /** + * Fires when a deprecated function is called. + * + * @since 2.5.0 + * + * @param string $function The function that was called. + * @param string $replacement The function that should have been called. + * @param string $version The version of WordPress that deprecated the function. + */ + do_action( 'deprecated_function_run', $function, $replacement, $version ); + + /** + * Filters whether to trigger an error for deprecated functions. + * + * @since 2.5.0 + * + * @param bool $trigger Whether to trigger the error for deprecated functions. Default true. + */ + if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) { + if ( function_exists( '__' ) ) { + if ( ! is_null( $replacement ) ) { + /* translators: 1: PHP function name, 2: version number, 3: alternative function name */ + trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) ); + } else { + /* translators: 1: PHP function name, 2: version number */ + trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $function, $version ) ); } - } - } - - if ( !$themes_dir || !$theme_files ) { - return $themes; - } - - sort($theme_files); - - foreach($theme_files as $theme_file) { - if ( ! is_readable("$theme_root/$theme_file") ) { - $wp_broken_themes[$theme_file] = array('Name' => $theme_file, 'Title' => $theme_file, 'Description' => __('File not readable.')); - continue; - } - - $theme_data = get_theme_data("$theme_root/$theme_file"); - - $name = $theme_data['Name']; - $title = $theme_data['Title']; - $description = wptexturize($theme_data['Description']); - $version = $theme_data['Version']; - $author = $theme_data['Author']; - $template = $theme_data['Template']; - $stylesheet = dirname($theme_file); - - foreach (array('png', 'gif', 'jpg', 'jpeg') as $ext) { - if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) { - $screenshot = "screenshot.$ext"; - break; + } 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, $version ) ); } } + } +} - if ( empty($name) ) { - $name = dirname($theme_file); - $title = $name; - } - - if ( empty($template) ) { - if ( file_exists(dirname("$theme_root/$theme_file/index.php")) ) { - $template = dirname($theme_file); +/** + * 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 + * @since 4.5.0 Added the `$parent_class` parameter. + * + * @access private + * + * @param string $class The class containing the deprecated constructor. + * @param string $version The version of WordPress that deprecated the function. + * @param string $parent_class Optional. The parent class calling the deprecated constructor. + * Default empty string. + */ +function _deprecated_constructor( $class, $version, $parent_class = '' ) { + + /** + * Fires when a deprecated constructor is called. + * + * @since 4.3.0 + * @since 4.5.0 Added the `$parent_class` parameter. + * + * @param string $class The class containing the deprecated constructor. + * @param string $version The version of WordPress that deprecated the function. + * @param string $parent_class The parent class calling the deprecated constructor. + */ + do_action( 'deprecated_constructor_run', $class, $version, $parent_class ); + + /** + * Filters 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( '__' ) ) { + if ( ! empty( $parent_class ) ) { + /* translators: 1: PHP class name, 2: PHP parent class name, 3: version number, 4: __construct() method */ + trigger_error( sprintf( __( 'The called constructor method for %1$s in %2$s is deprecated since version %3$s! Use %4$s instead.' ), + $class, $parent_class, $version, '
__construct()
' ) ); } else { - continue; + /* translators: 1: PHP class name, 2: version number, 3: __construct() method */ + trigger_error( sprintf( __( 'The called constructor method for %1$s is deprecated since version %2$s! Use %3$s instead.' ), + $class, $version, '
__construct()
' ) ); + } + } else { + if ( ! empty( $parent_class ) ) { + trigger_error( sprintf( 'The called constructor method for %1$s in %2$s is deprecated since version %3$s! Use %4$s instead.', + $class, $parent_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()
' ) ); } } + } - $template = trim($template); +} - if ( !file_exists("$theme_root/$template/index.php") ) { - $wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.')); - continue; +/** + * Mark a file as deprecated and inform when it has been used. + * + * There is a hook {@see '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 ); + + /** + * Filters 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( $replacement ) ) { + /* translators: 1: PHP file name, 2: version number, 3: alternative file name */ + trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message ); + } else { + /* translators: 1: PHP file name, 2: version number */ + trigger_error( sprintf( __('%1$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 ); + } } - - $stylesheet_files = array(); - $stylesheet_dir = @ dir("$theme_root/$stylesheet"); - if ( $stylesheet_dir ) { - while(($file = $stylesheet_dir->read()) !== false) { - if ( !preg_match('|^\.+$|', $file) && preg_match('|\.css$|', $file) ) - $stylesheet_files[] = "$theme_loc/$stylesheet/$file"; + } +} +/** + * 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__, '3.0.0' ); + * } + * + * + * 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 ); + + /** + * Filters 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( $message ) ) { + /* translators: 1: PHP function name, 2: version number, 3: optional message regarding the change */ + trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s! %3$s'), $function, $version, $message ) ); + } else { + /* translators: 1: PHP function name, 2: version number */ + trigger_error( sprintf( __('%1$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 ) ); } } + } +} - $template_files = array(); - $template_dir = @ dir("$theme_root/$template"); - if ( $template_dir ) { - while(($file = $template_dir->read()) !== false) { - if ( !preg_match('|^\.+$|', $file) && preg_match('|\.php$|', $file) ) - $template_files[] = "$theme_loc/$template/$file"; - } +/** + * Marks a deprecated action or filter hook as deprecated and throws a notice. + * + * Use the {@see 'deprecated_hook_run'} action to get the backtrace describing where + * the deprecated hook was called. + * + * Default behavior is to trigger a user error if `WP_DEBUG` is true. + * + * This function is called by the do_action_deprecated() and apply_filters_deprecated() + * functions, and so generally does not need to be called directly. + * + * @since 4.6.0 + * @access private + * + * @param string $hook The hook that was used. + * @param string $version The version of WordPress that deprecated the hook. + * @param string $replacement Optional. The hook that should have been used. + * @param string $message Optional. A message regarding the change. + */ +function _deprecated_hook( $hook, $version, $replacement = null, $message = null ) { + /** + * Fires when a deprecated hook is called. + * + * @since 4.6.0 + * + * @param string $hook The hook that was called. + * @param string $replacement The hook that should be used as a replacement. + * @param string $version The version of WordPress that deprecated the argument used. + * @param string $message A message regarding the change. + */ + do_action( 'deprecated_hook_run', $hook, $replacement, $version, $message ); + + /** + * Filters whether to trigger deprecated hook errors. + * + * @since 4.6.0 + * + * @param bool $trigger Whether to trigger deprecated hook errors. Requires + * `WP_DEBUG` to be defined true. + */ + if ( WP_DEBUG && apply_filters( 'deprecated_hook_trigger_error', true ) ) { + $message = empty( $message ) ? '' : ' ' . $message; + if ( ! is_null( $replacement ) ) { + /* translators: 1: WordPress hook name, 2: version number, 3: alternative hook name */ + trigger_error( sprintf( __( '%1$s is deprecated since version %2$s! Use %3$s instead.' ), $hook, $version, $replacement ) . $message ); + } else { + /* translators: 1: WordPress hook name, 2: version number */ + trigger_error( sprintf( __( '%1$s is deprecated since version %2$s with no alternative available.' ), $hook, $version ) . $message ); } + } +} - $template_dir = dirname($template_files[0]); - $stylesheet_dir = dirname($stylesheet_files[0]); - - if ( empty($template_dir) ) - $template_dir = '/'; - if ( empty($stylesheet_dir) ) - $stylesheet_dir = '/'; - - // Check for theme name collision. This occurs if a theme is copied to - // a new theme directory and the theme header is not updated. Whichever - // theme is first keeps the name. Subsequent themes get a suffix applied. - // The Default and Classic themes always trump their pretenders. - if ( isset($themes[$name]) ) { - if ( ('WordPress Default' == $name || 'WordPress Classic' == $name) && - ('default' == $stylesheet || 'classic' == $stylesheet) ) { - // If another theme has claimed to be one of our default themes, move - // them aside. - $suffix = $themes[$name]['Stylesheet']; - $new_name = "$name/$suffix"; - $themes[$new_name] = $themes[$name]; - $themes[$new_name]['Name'] = $new_name; +/** + * Mark something as being incorrectly called. + * + * There is a hook {@see '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 ); + + /** + * Filters 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( '__' ) ) { + if ( is_null( $version ) ) { + $version = ''; + } else { + /* translators: %s: version number */ + $version = sprintf( __( '(This message was added in version %s.)' ), $version ); + } + /* translators: %s: Codex URL */ + $message .= ' ' . sprintf( __( 'Please see Debugging in WordPress for more information.' ), + __( 'https://codex.wordpress.org/Debugging_in_WordPress' ) + ); + /* translators: Developer debugging message. 1: PHP function name, 2: Explanatory message, 3: Version information message */ + trigger_error( sprintf( __( '%1$s was called incorrectly. %2$s %3$s' ), $function, $message, $version ) ); + } else { + if ( is_null( $version ) ) { + $version = ''; } else { - $name = "$name/$stylesheet"; + $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 ) ); } - - $themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template, 'Stylesheet' => $stylesheet, 'Template Files' => $template_files, 'Stylesheet Files' => $stylesheet_files, 'Template Dir' => $template_dir, 'Stylesheet Dir' => $stylesheet_dir, 'Status' => $theme_data['Status'], 'Screenshot' => $screenshot); } +} - // Resolve theme dependencies. - $theme_names = array_keys($themes); +/** + * Is the server running earlier than 1.5.0 version of lighttpd? + * + * @since 2.5.0 + * + * @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 + * + * @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; - foreach ($theme_names as $theme_name) { - $themes[$theme_name]['Parent Theme'] = ''; - if ( $themes[$theme_name]['Stylesheet'] != $themes[$theme_name]['Template'] ) { - foreach ($theme_names as $parent_theme_name) { - if ( ($themes[$parent_theme_name]['Stylesheet'] == $themes[$parent_theme_name]['Template']) && ($themes[$parent_theme_name]['Template'] == $themes[$theme_name]['Template']) ) { - $themes[$theme_name]['Parent Theme'] = $themes[$parent_theme_name]['Name']; - break; - } - } - } + 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' ); } - $wp_themes = $themes; + /** + * Filters 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 $themes; + return 0; } -function get_theme($theme) { - $themes = get_themes(); +/** + * 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 $old_forced; + } - if ( array_key_exists($theme, $themes) ) - return $themes[$theme]; + 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'] ); - return NULL; -} + // 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'] ); -function get_current_theme() { - $themes = get_themes(); - $theme_names = array_keys($themes); - $current_template = get_settings('template'); - $current_stylesheet = get_settings('stylesheet'); - $current_theme = 'WordPress Default'; + // 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'] ); - if ( $themes ) { - foreach ($theme_names as $theme_name) { - if ( $themes[$theme_name]['Stylesheet'] == $current_stylesheet && - $themes[$theme_name]['Template'] == $current_template ) { - $current_theme = $themes[$theme_name]['Name']; - break; + } 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 $current_theme; -} + return rtrim($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 + * + * @param int $site_id Optional. Site ID to test. 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( $site_id = null ) { + if ( ! is_multisite() ) + return true; -function get_query_template($type) { - $template = ''; - if ( file_exists(TEMPLATEPATH . "/{$type}.php") ) - $template = TEMPLATEPATH . "/{$type}.php"; + if ( ! $site_id ) + $site_id = get_current_blog_id(); - return apply_filters("{$type}_template", $template); + return (int) $site_id === (int) get_network()->site_id; } -function get_404_template() { - return get_query_template('404'); -} +/** + * 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; + } -function get_archive_template() { - return get_query_template('archive'); -} + if ( null === $network_id ) { + $network_id = get_current_network_id(); + } -function get_author_template() { - return get_query_template('author'); + $network_id = (int) $network_id; + + return ( $network_id === get_main_network_id() ); } -function get_category_template() { - $template = ''; - if ( file_exists(TEMPLATEPATH . "/category-" . get_query_var('cat') . '.php') ) - $template = TEMPLATEPATH . "/category-" . get_query_var('cat') . '.php'; - else if ( file_exists(TEMPLATEPATH . "/category.php") ) - $template = TEMPLATEPATH . "/category.php"; +/** + * Get the main network ID. + * + * @since 4.3.0 + * + * @return int The ID of the main network. + */ +function get_main_network_id() { + if ( ! is_multisite() ) { + return 1; + } - return apply_filters('category_template', $template); -} + $current_network = get_network(); -function get_date_template() { - return get_query_template('date'); -} + if ( defined( 'PRIMARY_NETWORK_ID' ) ) { + $main_network_id = PRIMARY_NETWORK_ID; + } elseif ( isset( $current_network->id ) && 1 === (int) $current_network->id ) { + // If the current network has an ID of 1, assume it is the main network. + $main_network_id = 1; + } else { + $_networks = get_networks( array( 'fields' => 'ids', 'number' => 1 ) ); + $main_network_id = array_shift( $_networks ); + } -function get_home_template() { - $template = ''; + /** + * Filters 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; - if ( file_exists(TEMPLATEPATH . "/home.php") ) - $template = TEMPLATEPATH . "/home.php"; - else if ( file_exists(TEMPLATEPATH . "/index.php") ) - $template = TEMPLATEPATH . "/index.php"; + static $global_terms = null; + if ( is_null( $global_terms ) ) { + + /** + * Filters 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; + } - return apply_filters('home_template', $template); + $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'] ); + } } -function get_page_template() { - global $wp_query; +/** + * Gives a nicely-formatted list of timezone strings. + * + * @since 2.9.0 + * @since 4.7.0 Added the `$locale` parameter. + * + * @staticvar bool $mo_loaded + * @staticvar string $locale_loaded + * + * @param string $selected_zone Selected timezone. + * @param string $locale Optional. Locale to load the timezones in. Default current site locale. + * @return string + */ +function wp_timezone_choice( $selected_zone, $locale = null ) { + static $mo_loaded = false, $locale_loaded = null; + + $continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific'); + + // Load translations for continents and cities. + if ( ! $mo_loaded || $locale !== $locale_loaded ) { + $locale_loaded = $locale ? $locale : get_locale(); + $mofile = WP_LANG_DIR . '/continents-cities-' . $locale_loaded . '.mo'; + unload_textdomain( 'continents-cities' ); + load_textdomain( 'continents-cities', $mofile ); + $mo_loaded = true; + } - $id = (int) $wp_query->post->ID; - $template = get_post_meta($id, '_wp_page_template', true); + $zonen = array(); + foreach ( timezone_identifiers_list() as $zone ) { + $zone = explode( '/', $zone ); + if ( !in_array( $zone[0], $continents ) ) { + continue; + } - if ( 'default' == $template ) - $template = ''; + // 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( $zonen, '_wp_timezone_choice_usort_callback' ); - if ( ! empty($template) && file_exists(TEMPLATEPATH . "/$template") ) - $template = TEMPLATEPATH . "/$template"; - else if ( file_exists(TEMPLATEPATH . "/page.php") ) - $template = TEMPLATEPATH . "/page.php"; - else - $template = ''; + $structure = array(); - return apply_filters('page_template', $template); -} + if ( empty( $selected_zone ) ) { + $structure[] = ''; + } -function get_paged_template() { - return get_query_template('paged'); -} + foreach ( $zonen as $key => $zone ) { + // Build value in an array to join later + $value = array( $zone['continent'] ); -function get_search_template() { - return get_query_template('search'); -} + 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 -function get_single_template() { - return get_query_template('single'); -} + // Continent optgroup + if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) { + $label = $zone['t_continent']; + $structure[] = ''; + } -function get_attachment_template() { - global $posts; - $type = explode('/', $posts[0]->post_mime_type); - if ( $template = get_query_template($type[0]) ) - return $template; - elseif ( $template = get_query_template($type[1]) ) - return $template; - elseif ( $template = get_query_template("$type[0]_$type[1]") ) - return $template; - else - return get_query_template('attachment'); -} + // Add the city to the value + $value[] = $zone['city']; -function get_comments_popup_template() { - if ( file_exists( TEMPLATEPATH . '/comments-popup.php') ) - $template = TEMPLATEPATH . '/comments-popup.php'; - else - $template = get_theme_root() . '/default/comments-popup.php'; + $display = $zone['t_city']; + if ( !empty( $zone['subcity'] ) ) { + // Add the subcity to the value + $value[] = $zone['subcity']; + $display .= ' - ' . $zone['t_subcity']; + } + } - return apply_filters('comments_popup_template', $template); -} + // Build the value + $value = join( '/', $value ); + $selected = ''; + if ( $value === $selected_zone ) { + $selected = 'selected="selected" '; + } + $structure[] = '"; -// Borrowed from the PHP Manual user notes. Convert entities, while -// preserving already-encoded entities: -function htmlentities2($myHTML) { - $translation_table=get_html_translation_table (HTML_ENTITIES,ENT_QUOTES); - $translation_table[chr(38)] = '&'; - return preg_replace("/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/","&" , strtr($myHTML, $translation_table)); -} + // 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; -function is_plugin_page() { - global $plugin_page; + $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" '; + $structure[] = '"; - if ( isset($plugin_page) ) - return true; + } + $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; - return false; -} + $delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS ); -/* -add_query_arg: Returns a modified querystring by 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. + $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); -Parameters: -add_query_arg(newkey, newvalue, oldquery_or_uri) or -add_query_arg(associative_array, oldquery_or_uri) -*/ -function add_query_arg() { - $ret = ''; - if ( is_array(func_get_arg(0)) ) { - if ( @func_num_args() < 2 ) - $uri = $_SERVER['REQUEST_URI']; - else - $uri = @func_get_arg(1); - } else { - if ( @func_num_args() < 3 ) - $uri = $_SERVER['REQUEST_URI']; - else - $uri = @func_get_arg(2); - } + foreach ( (array) $posts_to_delete as $post ) { + $post_id = (int) $post['post_id']; + if ( !$post_id ) + continue; - if ( $frag = strstr($uri, '#') ) - $uri = substr($uri, 0, -strlen($frag)); - else - $frag = ''; + $del_post = get_post($post_id); - if ( preg_match('|^https?://|i', $uri, $matches) ) { - $protocol = $matches[0]; - $uri = substr($uri, strlen($protocol)); - } else { - $protocol = ''; + if ( !$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); + } } - if ( strstr($uri, '?') ) { - $parts = explode('?', $uri, 2); - if ( 1 == count($parts) ) { - $base = '?'; - $query = $parts[0]; + $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); + + foreach ( (array) $comments_to_delete as $comment ) { + $comment_id = (int) $comment['comment_id']; + if ( !$comment_id ) + continue; + + $del_comment = get_comment($comment_id); + + 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 { - $base = $parts[0] . '?'; - $query = $parts[1]; + wp_delete_comment( $del_comment ); } - } else if ( !empty($protocol) || strstr($uri, '/') ) { - $base = $uri . '?'; - $query = ''; - } else { - $base = ''; - $query = $uri; } +} + +/** + * Retrieve metadata from a file. + * + * 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. + * + * 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. + * + * @link https://codex.wordpress.org/File_Header + * + * @since 2.9.0 + * + * @param string $file Path to the file. + * @param array $default_headers List of headers, in the format array('HeaderKey' => 'Header Name'). + * @param string $context Optional. If specified adds filter hook {@see 'extra_$context_headers'}. + * Default empty. + * @return array Array of file headers in `HeaderKey => Header Value` format. + */ +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( $fp ); - parse_str($query, $qs); - if ( is_array(func_get_arg(0)) ) { - $kayvees = func_get_arg(0); - $qs = array_merge($qs, $kayvees); + // Make sure we catch CR-only line endings. + $file_data = str_replace( "\r", "\n", $file_data ); + + /** + * Filters extra file headers by context. + * + * The dynamic portion of the hook name, `$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 { - $qs[func_get_arg(0)] = func_get_arg(1); + $all_headers = $default_headers; } - foreach($qs as $k => $v) { - if ( $v != '' ) { - if ( $ret != '' ) - $ret .= '&'; - $ret .= "$k=$v"; - } + 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 + $all_headers[ $field ] = ''; } - $ret = $protocol . $base . $ret . $frag; - return trim($ret, '?'); -} -function remove_query_arg($key, $query) { - return add_query_arg($key, '', $query); + return $all_headers; +} + +/** + * Returns true. + * + * Useful for returning true to filters easily. + * + * @since 3.0.0 + * + * @see __return_false() + * + * @return true True. + */ +function __return_true() { + return true; } -function load_template($_template_file) { - global $posts, $post, $wp_did_header, $wp_did_template_redirect, $wp_query, - $wp_rewrite, $wpdb; - - if ( is_array($wp_query->query_vars) ) - extract($wp_query->query_vars, EXTR_SKIP); - - require_once($_template_file); +/** + * Returns false. + * + * Useful for returning false to filters easily. + * + * @since 3.0.0 + * + * @see __return_true() + * + * @return false False. + */ +function __return_false() { + return false; } -function add_magic_quotes($array) { - global $wpdb; +/** + * Returns 0. + * + * Useful for returning 0 to filters easily. + * + * @since 3.0.0 + * + * @return int 0. + */ +function __return_zero() { + return 0; +} - foreach ($array as $k => $v) { - if ( is_array($v) ) { - $array[$k] = add_magic_quotes($v); - } else { - $array[$k] = $wpdb->escape($v); - } +/** + * Returns an empty array. + * + * Useful for returning an empty array to filters easily. + * + * @since 3.0.0 + * + * @return array Empty array. + */ +function __return_empty_array() { + return array(); +} + +/** + * Returns null. + * + * Useful for returning null to filters easily. + * + * @since 3.4.0 + * + * @return null Null value. + */ +function __return_null() { + return null; +} + +/** + * Returns an empty string. + * + * Useful for returning an empty string to filters easily. + * + * @since 3.7.0 + * + * @see __return_null() + * + * @return string Empty string. + */ +function __return_empty_string() { + return ''; +} + +/** + * Send a HTTP header to disable content type sniffing in browsers which support it. + * + * @since 3.0.0 + * + * @see https://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx + * @see https://src.chromium.org/viewvc/chrome?view=rev&revision=6985 + */ +function send_nosniff_header() { + @header( 'X-Content-Type-Options: nosniff' ); +} + +/** + * Return a MySQL expression for selecting the week number based on the start_of_week option. + * + * @ignore + * @since 3.0.0 + * + * @param string $column Database column. + * @return string SQL clause. + */ +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 )"; } - return $array; } -function wp_remote_fopen( $uri ) { - $timeout = 10; - $parsed_url = @parse_url($uri); - - if ( !$parsed_url || !is_array($parsed_url) ) - return false; - - if ( !isset($parsed_url['scheme']) || !in_array($parsed_url['scheme'], array('http','https')) ) - $uri = 'http://' . $uri; - - if ( ini_get('allow_url_fopen') ) { - $fp = @fopen( $uri, 'r' ); - if ( !$fp ) - return false; - - //stream_set_timeout($fp, $timeout); // Requires php 4.3 - $linea = ''; - while( $remote_read = fread($fp, 4096) ) - $linea .= $remote_read; - fclose($fp); - return $linea; - } else if ( function_exists('curl_init') ) { - $handle = curl_init(); - curl_setopt ($handle, CURLOPT_URL, $uri); - curl_setopt ($handle, CURLOPT_CONNECTTIMEOUT, 1); - curl_setopt ($handle, CURLOPT_RETURNTRANSFER, 1); - curl_setopt ($handle, CURLOPT_TIMEOUT, $timeout); - $buffer = curl_exec($handle); - curl_close($handle); - return $buffer; - } else { - return false; +/** + * Find hierarchy loops using a callback function that maps object IDs to parent IDs. + * + * @since 3.1.0 + * @access private + * + * @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 wp_find_hierarchy_loop( $callback, $start, $start_parent, $callback_args = array() ) { + $override = is_null( $start_parent ) ? array() : array( $start => $start_parent ); + + if ( !$arbitrary_loop_member = wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override, $callback_args ) ) + return array(); + + return wp_find_hierarchy_loop_tortoise_hare( $callback, $arbitrary_loop_member, $override, $callback_args, true ); +} + +/** + * Use the "The Tortoise and the Hare" algorithm to detect loops. + * + * 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 3.1.0 + * @access private + * + * @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 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; + + // tortoise got lapped - must be a loop + if ( $tortoise == $evanescent_hare || $tortoise == $hare ) + return $_return_loop ? $return : $tortoise; + + // Increment tortoise by one step + $tortoise = isset( $override[$tortoise] ) ? $override[$tortoise] : call_user_func_array( $callback, array_merge( array( $tortoise ), $callback_args ) ); } -} -function wp($query_vars = '') { - global $wp; - - $wp->main($query_vars); + return false; } -function status_header( $header ) { - if ( 200 == $header ) - $text = 'OK'; - elseif ( 301 == $header ) - $text = 'Moved Permanently'; - elseif ( 302 == $header ) - $text = 'Moved Temporarily'; - elseif ( 304 == $header ) - $text = 'Not Modified'; - elseif ( 404 == $header ) - $text = 'Not Found'; - elseif ( 410 == $header ) - $text = 'Gone'; +/** + * 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. + * @since 4.7.0 Added 'urn' 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', 'webcal', and 'urn'. + */ +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', 'urn' ); + + /** + * Filters 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 ); + } - if ( version_compare(phpversion(), '4.3.0', '>=') ) - @header("HTTP/1.1 $header $text", true, $header); + return $protocols; +} + +/** + * Return a comma-separated string of functions that have been called to get + * to the current point in code. + * + * @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_debug_backtrace_summary( $ignore_class = null, $skip_frames = 0, $pretty = true ) { + if ( version_compare( PHP_VERSION, '5.2.5', '>=' ) ) + $trace = debug_backtrace( false ); else - @header("HTTP/1.1 $header $text"); -} + $trace = debug_backtrace(); -function nocache_headers() { - @ header('Expires: Wed, 11 Jan 1984 05:00:00 GMT'); - @ header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); - @ header('Cache-Control: no-cache, must-revalidate, max-age=0'); - @ header('Pragma: no-cache'); -} + $caller = array(); + $check_class = ! is_null( $ignore_class ); + $skip_frames++; // skip this function -function get_usermeta( $user_id, $meta_key = '') { - global $wpdb; - $user_id = (int) $user_id; + foreach ( $trace as $call ) { + if ( $skip_frames > 0 ) { + $skip_frames--; + } elseif ( isset( $call['class'] ) ) { + if ( $check_class && $ignore_class == $call['class'] ) + continue; // Filter out calls - if ( !empty($meta_key) ) { - $meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key); - $metas = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key'"); - } else { - $metas = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = '$user_id'"); + $caller[] = "{$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[] = $call['function']; + } + } } - - if ( empty($metas) ) { - if ( empty($meta_key) ) - return array(); - else - return ''; + if ( $pretty ) + return join( ', ', array_reverse( $caller ) ); + else + return $caller; +} + +/** + * 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[] = $id; + } } - foreach ($metas as $index => $meta) { - @ $value = unserialize($meta->meta_value); - if ( $value === FALSE ) - $value = $meta->meta_value; + return $clean; +} - $values[] = $value; - } +/** + * Test if the current device has the capability to upload files. + * + * @since 3.4.0 + * @access private + * + * @return bool Whether the device is able to upload files. + */ +function _device_can_upload() { + if ( ! wp_is_mobile() ) + return true; - if ( count($values) == 1 ) - return $values[0]; - else - return $values; -} + $ua = $_SERVER['HTTP_USER_AGENT']; -function update_usermeta( $user_id, $meta_key, $meta_value ) { - global $wpdb; - if ( !is_numeric( $user_id ) ) - return false; - $meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key); - - // FIXME: usermeta data is assumed to be already escaped - if ( is_string($meta_value) ) - $meta_value = stripslashes($meta_value); - $meta_value = maybe_serialize($meta_value); - $meta_value = $wpdb->escape($meta_value); - - if (empty($meta_value)) { - delete_usermeta($user_id, $meta_key); - } - - $cur = $wpdb->get_row("SELECT * FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key'"); - if ( !$cur ) { - $wpdb->query("INSERT INTO $wpdb->usermeta ( user_id, meta_key, meta_value ) - VALUES - ( '$user_id', '$meta_key', '$meta_value' )"); - } else if ( $cur->meta_value != $meta_value ) { - $wpdb->query("UPDATE $wpdb->usermeta SET meta_value = '$meta_value' WHERE user_id = '$user_id' AND meta_key = '$meta_key'"); - } else { - return false; + 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', '>=' ); } - - $user = get_userdata($user_id); - wp_cache_delete($user_id, 'users'); - wp_cache_delete($user->user_login, 'userlogins'); - + return true; } -function delete_usermeta( $user_id, $meta_key, $meta_value = '' ) { - global $wpdb; - if ( !is_numeric( $user_id ) ) - return false; - $meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key); +/** + * 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('|', $wrappers) . ')'; + + return preg_match( "!^$wrappers_re://!", $path ) === 1; +} + +/** + * 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 ) { + /** + * Filters 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 ), $source_date ); +} + +/** + * Load the auth check for monitoring whether the user is still logged in. + * + * Can be disabled with remove_action( 'admin_enqueue_scripts', 'wp_auth_check_load' ); + * + * This is disabled for certain screens where a login screen could cause an + * inconvenient interruption. A filter called {@see 'wp_auth_check_load'} can be used + * for fine-grained control. + * + * @since 3.6.0 + */ +function wp_auth_check_load() { + if ( ! is_admin() && ! is_user_logged_in() ) + return; - if ( is_array($meta_value) || is_object($meta_value) ) - $meta_value = serialize($meta_value); - $meta_value = trim( $meta_value ); + if ( defined( 'IFRAME_REQUEST' ) ) + return; - if ( ! empty($meta_value) ) - $wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key' AND meta_value = '$meta_value'"); - else - $wpdb->query("DELETE FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key'"); - - $user = get_userdata($user_id); - wp_cache_delete($user_id, 'users'); - wp_cache_delete($user->user_login, 'userlogins'); - - return true; + $screen = get_current_screen(); + $hidden = array( 'update', 'update-network', 'update-core', 'update-core-network', 'upgrade', 'upgrade-network', 'network' ); + $show = ! in_array( $screen->id, $hidden ); + + /** + * Filters 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, $screen ) ) { + wp_enqueue_style( 'wp-auth-check' ); + wp_enqueue_script( 'wp-auth-check' ); + + add_action( 'admin_print_footer_scripts', 'wp_auth_check_html', 5 ); + add_action( 'wp_print_footer_scripts', 'wp_auth_check_html', 5 ); + } } -function register_activation_hook($file, $function) { - $file = plugin_basename($file); - - add_action('activate_' . $file, $function); -} +/** + * 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 ); + + /** + * Filters 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'; + + ?> +
+
+
+ + +
+ +
+

+

+

+
+
+
+ [\s\S]*<\/%1$s>|\s*\/>)', tag_escape( $tag ) ); +} + +/** + * 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' === strtolower( $charset ) || 'utf8' === strtolower( $charset) ) { + + return 'UTF-8'; + } - add_action('deactivate_' . $file, $function); -} + if ( 'iso-8859-1' === strtolower( $charset ) || 'iso8859-1' === strtolower( $charset ) ) { -function plugin_basename($file) { - $file = preg_replace('|\\\\+|', '\\\\', $file); - $file = preg_replace('/^.*wp-content[\\\\\/]plugins[\\\\\/]/', '', $file); - return $file; -} + return 'ISO-8859-1'; + } -function get_num_queries() { - global $wpdb; - return $wpdb->num_queries; -} + return $charset; +} + +/** + * 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; + + if ( is_null( $overloaded ) ) + $overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 ); + + if ( false === $overloaded ) + return; -function wp_nonce_url($actionurl, $action = -1) { - return wp_specialchars(add_query_arg('_wpnonce', wp_create_nonce($action), $actionurl)); -} + if ( ! $reset ) { + $encoding = mb_internal_encoding(); + array_push( $encodings, $encoding ); + mb_internal_encoding( 'ISO-8859-1' ); + } -function wp_nonce_field($action = -1, $name = "_wpnonce", $referer = true) { - $name = attribute_escape($name); - echo ''; - if ( $referer ) - wp_referer_field(); + if ( $reset && $encodings ) { + $encoding = array_pop( $encodings ); + mb_internal_encoding( $encoding ); + } } -function wp_referer_field() { - $ref = attribute_escape(stripslashes($_SERVER['REQUEST_URI'])); - echo ''; - if ( wp_get_original_referer() ) { - $original_ref = attribute_escape(stripslashes(wp_get_original_referer())); - echo ''; +/** + * Reset the mbstring internal encoding to a users previously set encoding. + * + * @see mbstring_binary_safe_encoding() + * + * @since 3.7.0 + */ +function reset_mbstring_encoding() { + mbstring_binary_safe_encoding( true ); +} + +/** + * Filter/validate a variable as a boolean. + * + * Alternative to `filter_var( $var, FILTER_VALIDATE_BOOLEAN )`. + * + * @since 4.0.0 + * + * @param mixed $var Boolean value to validate. + * @return bool Whether the value is validated. + */ +function wp_validate_boolean( $var ) { + if ( is_bool( $var ) ) { + return $var; } -} -function wp_original_referer_field() { - echo ''; -} + if ( is_string( $var ) && 'false' === strtolower( $var ) ) { + return false; + } -function wp_get_referer() { - foreach ( array($_REQUEST['_wp_http_referer'], $_SERVER['HTTP_REFERER']) as $ref ) - if ( !empty($ref) ) - return $ref; - return false; + return (bool) $var; +} + +/** + * Delete a file + * + * @since 4.2.0 + * + * @param string $file The path to the file to delete. + */ +function wp_delete_file( $file ) { + /** + * Filters 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( $delete ); + } } -function wp_get_original_referer() { - if ( !empty($_REQUEST['_wp_original_http_referer']) ) - return $_REQUEST['_wp_original_http_referer']; - return false; -} +/** + * 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 $post; -function wp_explain_nonce($action) { - if ( $action !== -1 && preg_match('/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches) ) { - $verb = $matches[1]; - $noun = $matches[2]; - - $trans = array(); - $trans['update']['attachment'] = array(__('Are you sure you want to edit this attachment: "%s"?'), 'get_the_title'); - - $trans['add']['category'] = array(__('Are you sure you want to add this category?'), false); - $trans['delete']['category'] = array(__('Are you sure you want to delete this category: "%s"?'), 'get_catname'); - $trans['update']['category'] = array(__('Are you sure you want to edit this category: "%s"?'), 'get_catname'); - - $trans['delete']['comment'] = array(__('Are you sure you want to delete this comment: "%s"?'), 'use_id'); - $trans['unapprove']['comment'] = array(__('Are you sure you want to unapprove this comment: "%s"?'), 'use_id'); - $trans['approve']['comment'] = array(__('Are you sure you want to approve this comment: "%s"?'), 'use_id'); - $trans['update']['comment'] = array(__('Are you sure you want to edit this comment: "%s"?'), 'use_id'); - $trans['bulk']['comments'] = array(__('Are you sure you want to bulk modify comments?'), false); - $trans['moderate']['comments'] = array(__('Are you sure you want to moderate comments?'), false); - - $trans['add']['bookmark'] = array(__('Are you sure you want to add this bookmark?'), false); - $trans['delete']['bookmark'] = array(__('Are you sure you want to delete this bookmark: "%s"?'), 'use_id'); - $trans['update']['bookmark'] = array(__('Are you sure you want to edit this bookmark: "%s"?'), 'use_id'); - $trans['bulk']['bookmarks'] = array(__('Are you sure you want to bulk modify bookmarks?'), false); - - $trans['add']['page'] = array(__('Are you sure you want to add this page?'), false); - $trans['delete']['page'] = array(__('Are you sure you want to delete this page: "%s"?'), 'get_the_title'); - $trans['update']['page'] = array(__('Are you sure you want to edit this page: "%s"?'), 'get_the_title'); - - $trans['edit']['plugin'] = array(__('Are you sure you want to edit this plugin file: "%s"?'), 'use_id'); - $trans['activate']['plugin'] = array(__('Are you sure you want to activate this plugin: "%s"?'), 'use_id'); - $trans['deactivate']['plugin'] = array(__('Are you sure you want to deactivate this plugin: "%s"?'), 'use_id'); - - $trans['add']['post'] = array(__('Are you sure you want to add this post?'), false); - $trans['delete']['post'] = array(__('Are you sure you want to delete this post: "%s"?'), 'get_the_title'); - $trans['update']['post'] = array(__('Are you sure you want to edit this post: "%s"?'), 'get_the_title'); - - $trans['add']['user'] = array(__('Are you sure you want to add this user?'), false); - $trans['delete']['users'] = array(__('Are you sure you want to delete users?'), false); - $trans['bulk']['users'] = array(__('Are you sure you want to bulk modify users?'), false); - $trans['update']['user'] = array(__('Are you sure you want to edit this user: "%s"?'), 'get_author_name'); - $trans['update']['profile'] = array(__('Are you sure you want to modify the profile for: "%s"?'), 'get_author_name'); - - $trans['update']['options'] = array(__('Are you sure you want to edit your settings?'), false); - $trans['update']['permalink'] = array(__('Are you sure you want to change your permalink structure to: %s?'), 'use_id'); - $trans['edit']['file'] = array(__('Are you sure you want to edit this file: "%s"?'), 'use_id'); - $trans['edit']['theme'] = array(__('Are you sure you want to edit this theme file: "%s"?'), 'use_id'); - $trans['switch']['theme'] = array(__('Are you sure you want to switch to this theme: "%s"?'), 'use_id'); - - if ( isset($trans[$verb][$noun]) ) { - if ( !empty($trans[$verb][$noun][1]) ) { - $lookup = $trans[$verb][$noun][1]; - $object = $matches[4]; - if ( 'use_id' != $lookup ) - $object = call_user_func($lookup, $object); - return sprintf($trans[$verb][$noun][0], $object); - } else { - return $trans[$verb][$noun][0]; - } - } + if ( ! is_preview() || empty( $post ) ) { + return; } - return __('Are you sure you want to do this?'); -} + // Has to match the window name used in post_submit_meta_box() + $name = 'wp-preview-' . (int) $post->ID; -function wp_nonce_ays($action) { - global $pagenow, $menu, $submenu, $parent_file, $submenu_file; + ?> + + \n"; - wp_die($html, $title); -} -function wp_die($message, $title = '') { - header('Content-Type: text/html; charset=utf-8'); + $current_limit = @ini_get( 'memory_limit' ); + $current_limit_int = wp_convert_hr_to_bytes( $current_limit ); - if ( empty($title) ) - $title = __('WordPress › Error'); -?> - - - - <?php echo $title ?> - - - - -

WordPress

-

- - - +/** + * Generate a random UUID (version 4). + * + * @since 4.7.0 + * + * @return string UUID. + */ +function wp_generate_uuid4() { + return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x', + mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), + mt_rand( 0, 0xffff ), + mt_rand( 0, 0x0fff ) | 0x4000, + mt_rand( 0, 0x3fff ) | 0x8000, + mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ) + ); +} + +/** + * Get last changed date for the specified cache group. + * + * @since 4.7.0 + * + * @param $group Where the cache contents are grouped. + * + * @return string $last_changed UNIX timestamp with microseconds representing when the group was last changed. + */ +function wp_cache_get_last_changed( $group ) { + $last_changed = wp_cache_get( 'last_changed', $group ); + + if ( ! $last_changed ) { + $last_changed = microtime(); + wp_cache_set( 'last_changed', $last_changed, $group ); + } + + return $last_changed; +}