X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/cc7b1505cd9fafd87c3672f669e13e98b0c544f7..e9d988989fe37ab8c5f903e47fbe36e6e00dc51f:/wp-includes/functions.php?ds=sidebyside diff --git a/wp-includes/functions.php b/wp-includes/functions.php index 83a00ef0..34fe1132 100644 --- a/wp-includes/functions.php +++ b/wp-includes/functions.php @@ -1,1028 +1,1196 @@ escape($_COOKIE[USER_COOKIE]); - return $wpdb->get_var("SELECT $field FROM $wpdb->users WHERE user_login = '$user'"); -} - -function mysql2date($dateformatstring, $mysqlstring, $translate = true) { - global $month, $weekday, $month_abbrev, $weekday_abbrev; +/** + * Main WordPress API + * + * @package WordPress + */ + +/** + * Converts MySQL DATETIME field to user specified date format. + * + * If $dateformatstring has 'G' value, then gmmktime() function will be used to + * make the time. If $dateformatstring is set to 'U', then mktime() function + * will be used to make the time. + * + * The $translate will only be used, if it is set to true and it is by default + * and if the $wp_locale object has the month and weekday set. + * + * @since 0.71 + * + * @param string $dateformatstring Either 'G', 'U', or php date format. + * @param string $mysqlstring Time from mysql DATETIME field. + * @param bool $translate Optional. Default is true. Will switch format to locale. + * @return string Date formated by $dateformatstring or locale (if available). + */ +function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) { $m = $mysqlstring; - if ( empty($m) ) { + if ( empty( $m ) ) return false; - } - $i = mktime(substr($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]; - $dateformatstring = ' '.$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); + if ( 'G' == $dateformatstring ) + return strtotime( $m . ' +0000' ); - $dateformatstring = substr($dateformatstring, 1, strlen($dateformatstring)-1); - } - $j = @date($dateformatstring, $i); - if ( !$j ) { - // for debug purposes - // echo $i." ".$mysqlstring; - } - return $j; -} + $i = strtotime( $m ); -function current_time($type, $gmt = 0) { - switch ($type) { + if ( 'U' == $dateformatstring ) + return $i; + + if ( $translate ) + return date_i18n( $dateformatstring, $i ); + else + return date( $dateformatstring, $i ); +} + +/** + * Retrieve the current time based on specified type. + * + * The 'mysql' type will return the time in the format for MySQL DATETIME field. + * The 'timestamp' type will return the current timestamp. + * + * If $gmt is set to either '1' or 'true', then both types will use GMT time. + * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option. + * + * @since 1.0.0 + * + * @param string $type Either 'mysql' or 'timestamp'. + * @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false. + * @return int|string String if $type is 'gmt', int if $type is 'timestamp'. + */ +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; + return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) ); break; case 'timestamp': - if ( $gmt ) $d = time(); - else $d = time() + (get_settings('gmt_offset') * 3600); - return $d; + return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 ); break; } } -function date_i18n($dateformatstring, $unixtimestamp) { - global $month, $weekday, $month_abbrev, $weekday_abbrev; +/** + * 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 + * + * @param string $dateformatstring Format to display the date. + * @param int $unixtimestamp Optional. Unix timestamp. + * @param bool $gmt Optional, default is false. Whether to convert to GMT for time. + * @return string The date, translated if locale specifies it. + */ +function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) { + global $wp_locale; $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); - } - $j = @date($dateformatstring, $i); - return $j; + // Sanity check for PHP 5.1.0- + if ( false === $i || intval($i) < 0 ) { + if ( ! $gmt ) + $i = current_time( 'timestamp' ); + else + $i = time(); + // we should not let date() interfere with our + // specially computed timestamp + $gmt = true; } -function get_weekstartend($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; - } else { - $lastpostdate = $cache_lastpostdate[$timezone]; - } - 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; - } - $lastpostdate = get_lastpostdate($timezone); - if ( $lastpostdate > $lastpostmodified ) { - $lastpostmodified = $lastpostdate; - } - $cache_lastpostmodified[$timezone] = $lastpostmodified; - } else { - $lastpostmodified = $cache_lastpostmodified[$timezone]; - } - return $lastpostmodified; -} + // store original value for language with untypical grammars + // see http://core.trac.wordpress.org/ticket/9396 + $req_format = $dateformatstring; -function user_pass_ok($user_login,$user_pass) { - global $cache_userdata; - if ( empty($cache_userdata[$user_login]) ) { - $userdata = get_userdatabylogin($user_login); - } else { - $userdata = $cache_userdata[$user_login]; + $datefunc = $gmt? 'gmdate' : 'date'; + + if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) { + $datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) ); + $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth ); + $dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) ); + $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday ); + $datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) ); + $datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( '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 = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring ); + $dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring ); + + $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 ); + } + $timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' ); + $timezone_formats_re = implode( '|', $timezone_formats ); + if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) && wp_timezone_supported() ) { + $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( $dateformatstring ) -1 ); + } + } + } } - return (md5($user_pass) == $userdata->user_pass); + $j = @$datefunc( $dateformatstring, $i ); + // allow plugins to redo this entirely for languages with untypical grammars + $j = apply_filters('date_i18n', $j, $req_format, $i, $gmt); + return $j; } +/** + * Convert integer number to format based on the locale. + * + * @since 2.3.0 + * + * @param int $number The number to convert based on locale. + * @param int $decimals Precision of the number of decimal places. + * @return string Converted number in string format. + */ +function number_format_i18n( $number, $decimals = 0 ) { + global $wp_locale; + $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); + return apply_filters( 'number_format_i18n', $formatted ); +} + +/** + * Convert number of bytes largest unit bytes will fit into. + * + * It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts + * 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. + * @link http://en.wikipedia.org/wiki/Byte + * + * @since 2.3.0 + * + * @param int|string $bytes Number of bytes. Note max integer size for integers. + * @param int $decimals Precision of number of decimal places. Deprecated. + * @return bool|string False on failure. Number string on success. + */ +function size_format( $bytes, $decimals = 0 ) { + $quant = array( + // ========================= Origin ==== + 'TB' => 1099511627776, // pow( 1024, 4) + 'GB' => 1073741824, // pow( 1024, 3) + 'MB' => 1048576, // pow( 1024, 2) + 'kB' => 1024, // pow( 1024, 1) + 'B ' => 1, // pow( 1024, 0) + ); + foreach ( $quant as $unit => $mag ) + if ( doubleval($bytes) >= $mag ) + return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit; -function get_usernumposts($userid) { - global $wpdb; - return $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_author = '$userid' AND post_status = 'publish'"); + return false; } - -// 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 = $wp_rewrite->wp_rewrite_rules(); - - // Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options - if ( empty($rewrite) ) - return 0; - - // $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 - - // Get rid of the #anchor - $url_split = explode('#', $url); - $url = $url_split[0]; - - // Get rid of URI ?query=string - $url_split = explode('?', $url); - $url = $url_split[0]; - - // Add 'www.' if it is absent and should be there - if ( false !== strpos(get_settings('home'), '://www.') && false === strpos($url, '://www.') ) - $url = str_replace('://', '://www.', $url); - - // Strip 'www.' if it is present and shouldn't be - if ( false === strpos(get_settings('home'), '://www.') ) - $url = str_replace('://www.', '://', $url); - - // Strip 'index.php/' if we're not using path info permalinks - if ( false === strpos($rewrite, 'index.php/') ) - $url = str_replace('index.php/', '', $url); - - if ( false !== strpos($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); +/** + * Get the week start and end from the datetime or date string from mysql. + * + * @since 0.71 + * + * @param string $mysqlstring Date or datetime field type from mysql. + * @param int $start_of_week Optional. Start of the week as an integer. + * @return array Keys are 'start' and 'end'. + */ +function get_weekstartend( $mysqlstring, $start_of_week = '' ) { + $my = substr( $mysqlstring, 0, 4 ); // Mysql string Year + $mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month + $md = substr( $mysqlstring, 5, 2 ); // Mysql string day + $day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day. + $weekday = date( 'w', $day ); // The day of the week from the timestamp + if ( !is_numeric($start_of_week) ) + $start_of_week = get_option( 'start_of_week' ); + + if ( $weekday < $start_of_week ) + $weekday += 7; + + $start = $day - 86400 * ( $weekday - $start_of_week ); // The most recent week start day on or before $day + $end = $start + 604799; // $start + 7 days - 1 second + 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 mixed $data Value to check to see if was serialized. + * @return bool False if not serialized and true if it was. + */ +function is_serialized( $data ) { + // if it isn't a string, it isn't serialized + if ( ! is_string( $data ) ) + return false; + $data = trim( $data ); + if ( 'N;' == $data ) + return true; + $length = strlen( $data ); + if ( $length < 4 ) + return false; + if ( ':' !== $data[1] ) + return false; + $lastc = $data[$length-1]; + if ( ';' !== $lastc && '}' !== $lastc ) + return false; + $token = $data[0]; + switch ( $token ) { + case 's' : + if ( '"' !== $data[$length-2] ) + return false; + case 'a' : + case 'O' : + return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); + case 'b' : + case 'i' : + case 'd' : + return (bool) preg_match( "/^{$token}:[0-9.E-]+;\$/", $data ); } + return false; +} - // Trim leading and lagging slashes - $url = trim($url, '/'); - - $request = $url; - - // Done with cleanup - - // 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 . '/' . $request; - } - - if ( preg_match("!^$match!", $request_match, $matches) ) { - // Got a match. - // Trim the query of everything up to the '?'. - $query = preg_replace("!^.+\?!", '', $query); - - // Substitute the substring matches into the query. - eval("\$query = \"$query\";"); - $query = new WP_Query($query); - if ( $query->is_single || $query->is_page ) - return $query->post->ID; - else - return 0; - } - } - return 0; +/** + * Check whether serialized data is of string type. + * + * @since 2.0.5 + * + * @param mixed $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( $data ); + if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings + return true; + return false; } +/** + * Retrieve option value based on name of option. + * + * If the option does not exist or does not have a value, then the return value + * will be false. This is useful to check whether you need to install an option + * and is commonly used during installation of plugin options and to test + * whether upgrading is required. + * + * If the option was serialized then it will be unserialized when it is returned. + * + * @since 1.5.0 + * @package WordPress + * @subpackage Option + * @uses apply_filters() Calls 'pre_option_$option' before checking the option. + * Any value other than false will "short-circuit" the retrieval of the option + * and return the returned value. You should not try to override special options, + * but you will not be prevented from doing so. + * @uses apply_filters() Calls 'option_$option', after checking the option, with + * the option value. + * + * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. + * @return mixed Value set for the option. + */ +function get_option( $option, $default = false ) { + global $wpdb; -function maybe_unserialize($original) { - if ( false !== $gm = @ unserialize($original) ) - return $gm; - else - return $original; -} + // Allow plugins to short-circuit options. + $pre = apply_filters( 'pre_option_' . $option, false ); + if ( false !== $pre ) + return $pre; -/* Options functions */ + $option = trim($option); + if ( empty($option) ) + return false; -function get_settings($setting) { - global $wpdb; + if ( defined( 'WP_SETUP_CONFIG' ) ) + return false; - $value = wp_cache_get($setting, 'options'); + if ( ! defined( 'WP_INSTALLING' ) ) { + // prevent non-existent options from triggering multiple queries + $notoptions = wp_cache_get( 'notoptions', 'options' ); + if ( isset( $notoptions[$option] ) ) + return $default; - 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(); + $alloptions = wp_load_alloptions(); - 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'); + if ( isset( $alloptions[$option] ) ) { + $value = $alloptions[$option]; } else { - return false; + $value = wp_cache_get( $option, 'options' ); + + if ( false === $value ) { + $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); + + // Has to be get_row instead of get_var because of funkiness with 0, false, null values + if ( is_object( $row ) ) { + $value = $row->option_value; + wp_cache_add( $option, $value, 'options' ); + } else { // option does not exist, so we must cache its non-existence + $notoptions[$option] = true; + wp_cache_set( 'notoptions', $notoptions, 'options' ); + return $default; + } + } } + } else { + $suppress = $wpdb->suppress_errors(); + $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); + $wpdb->suppress_errors( $suppress ); + if ( is_object( $row ) ) + $value = $row->option_value; + else + return $default; } // 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); - - return apply_filters( 'option_' . $setting, maybe_unserialize($value) ); -} - -function get_option($option) { - return get_settings($option); -} - -function get_user_option( $option, $user = 0 ) { + if ( 'home' == $option && '' == $value ) + return get_option( 'siteurl' ); + + if ( in_array( $option, array('siteurl', 'home', 'category_base', 'tag_base') ) ) + $value = untrailingslashit( $value ); + + return apply_filters( 'option_' . $option, maybe_unserialize( $value ) ); +} + +/** + * Protect WordPress special option from being modified. + * + * Will die if $option is in protected list. Protected options are 'alloptions' + * and 'notoptions' options. + * + * @since 2.2.0 + * @package WordPress + * @subpackage Option + * + * @param string $option Option name. + */ +function wp_protect_special_option( $option ) { + $protected = array( 'alloptions', 'notoptions' ); + if ( in_array( $option, $protected ) ) + wp_die( sprintf( __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) ); +} + +/** + * Print option value after sanitizing for forms. + * + * @uses attr Sanitizes value. + * @since 1.5.0 + * @package WordPress + * @subpackage Option + * + * @param string $option Option name. + */ +function form_option( $option ) { + echo esc_attr( get_option( $option ) ); +} + +/** + * Loads and caches all autoloaded options, if available or all options. + * + * @since 2.2.0 + * @package WordPress + * @subpackage Option + * + * @return array List of all options. + */ +function wp_load_alloptions() { global $wpdb; - - if ( empty($user) ) - $user = wp_get_current_user(); - else - $user = get_userdata($user); - - 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( $option ); -} - -function form_option($option) { - echo htmlspecialchars( get_option($option), ENT_QUOTES ); -} -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"); + if ( !defined( 'WP_INSTALLING' ) || !is_multisite() ) + $alloptions = wp_cache_get( 'alloptions', 'options' ); + else + $alloptions = false; + + if ( !$alloptions ) { + $suppress = $wpdb->suppress_errors(); + if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) ) + $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" ); + $wpdb->suppress_errors($suppress); + $alloptions = array(); + foreach ( (array) $alloptions_db as $o ) { + $alloptions[$o->option_name] = $o->option_value; + } + if ( !defined( 'WP_INSTALLING' ) || !is_multisite() ) + wp_cache_add( 'alloptions', $alloptions, 'options' ); } - $wpdb->show_errors(); - foreach ($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); - } - return apply_filters('all_options', $all_options); + return $alloptions; } -function update_option($option_name, $newvalue) { - global $wpdb; +/** + * Loads and caches certain often requested site options if is_multisite() and a peristent cache is not being used. + * + * @since 3.0.0 + * @package WordPress + * @subpackage Option + * + * @param int $site_id Optional site ID for which to query the options. Defaults to the current site. + */ +function wp_load_core_site_options( $site_id = null ) { + global $wpdb, $_wp_using_ext_object_cache; - if ( is_string($newvalue) ) - $newvalue = trim($newvalue); + if ( !is_multisite() || $_wp_using_ext_object_cache || defined( 'WP_INSTALLING' ) ) + return; - // If the new and old values are the same, no need to update. - $oldvalue = get_option($option_name); - if ( $newvalue == $oldvalue ) { - return false; - } + if ( empty($site_id) ) + $site_id = $wpdb->siteid; - if ( false === $oldvalue ) { - add_option($option_name, $newvalue); - return true; - } + $core_options = array('site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled' ); - $_newvalue = $newvalue; - if ( is_array($newvalue) || is_object($newvalue) ) - $newvalue = serialize($newvalue); + $core_options_in = "'" . implode("', '", $core_options) . "'"; + $options = $wpdb->get_results( $wpdb->prepare("SELECT meta_key, meta_value FROM $wpdb->sitemeta WHERE meta_key IN ($core_options_in) AND site_id = %d", $site_id) ); - wp_cache_set($option_name, $newvalue, 'options'); + foreach ( $options as $option ) { + $key = $option->meta_key; + $cache_key = "{$site_id}:$key"; + $option->meta_value = maybe_unserialize( $option->meta_value ); - $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; + wp_cache_set( $cache_key, $option->meta_value, 'site-options' ); } - 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, $newvalue ); -} - -// thx Alex Stapleton, http://alex.vort-x.net/blog/ -function add_option($name, $value = '', $description = '', $autoload = 'yes') { +/** + * Update the value of an option that was already added. + * + * You do not need to serialize values. If the value needs to be serialized, then + * it will be serialized before it is inserted into the database. Remember, + * resources can not be serialized or added as an option. + * + * If the option does not exist, then the option will be added with the option + * value, but you will not be able to set whether it is autoloaded. If you want + * to set whether an option is autoloaded, then you need to use the add_option(). + * + * @since 1.0.0 + * @package WordPress + * @subpackage Option + * + * @uses apply_filters() Calls 'pre_update_option_$option' hook to allow overwriting the + * option value to be stored. + * @uses do_action() Calls 'update_option' hook before updating the option. + * @uses do_action() Calls 'update_option_$option' and 'updated_option' hooks on success. + * + * @param string $option Option name. Expected to not be SQL-escaped. + * @param mixed $newvalue Option value. Expected to not be SQL-escaped. + * @return bool False if value was not updated and true if value was updated. + */ +function update_option( $option, $newvalue ) { global $wpdb; - // Make sure the option doesn't already exist - if ( false !== get_option($name) ) - return; + $option = trim($option); + if ( empty($option) ) + return false; - if ( is_array($value) || is_object($value) ) - $value = serialize($value); + wp_protect_special_option( $option ); - wp_cache_set($name, $value, 'options'); + if ( is_object($newvalue) ) + $newvalue = wp_clone($newvalue); - $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')"); + $newvalue = sanitize_option( $option, $newvalue ); + $oldvalue = get_option( $option ); + $newvalue = apply_filters( 'pre_update_option_' . $option, $newvalue, $oldvalue ); - return; -} + // If the new and old values are the same, no need to update. + if ( $newvalue === $oldvalue ) + return false; -function delete_option($name) { - 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; -} + if ( false === $oldvalue ) + return add_option( $option, $newvalue ); -function add_post_meta($post_id, $key, $value, $unique = false) { - global $wpdb, $post_meta_cache; + $notoptions = wp_cache_get( 'notoptions', 'options' ); + if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) { + unset( $notoptions[$option] ); + wp_cache_set( 'notoptions', $notoptions, 'options' ); + } - if ( $unique ) { - if ( $wpdb->get_var("SELECT meta_key FROM $wpdb->postmeta WHERE meta_key -= '$key' AND post_id = '$post_id'") ) { - return false; + $_newvalue = $newvalue; + $newvalue = maybe_serialize( $newvalue ); + + do_action( 'update_option', $option, $oldvalue, $_newvalue ); + if ( ! defined( 'WP_INSTALLING' ) ) { + $alloptions = wp_load_alloptions(); + if ( isset( $alloptions[$option] ) ) { + $alloptions[$option] = $_newvalue; + wp_cache_set( 'alloptions', $alloptions, 'options' ); + } else { + wp_cache_set( $option, $_newvalue, 'options' ); } } - $original = $value; - if ( is_array($value) || is_object($value) ) - $value = $wpdb->escape(serialize($value)); + $result = $wpdb->update( $wpdb->options, array( 'option_value' => $newvalue ), array( 'option_name' => $option ) ); - $wpdb->query("INSERT INTO $wpdb->postmeta (post_id,meta_key,meta_value) VALUES ('$post_id','$key','$value')"); - - $post_meta_cache['$post_id'][$key][] = $original; - - return true; + if ( $result ) { + do_action( "update_option_{$option}", $oldvalue, $_newvalue ); + do_action( 'updated_option', $option, $oldvalue, $_newvalue ); + return true; + } + return false; } -function delete_post_meta($post_id, $key, $value = '') { - global $wpdb, $post_meta_cache; +/** + * Add a new option. + * + * You do not need to serialize values. If the value needs to be serialized, then + * it will be serialized before it is inserted into the database. Remember, + * resources can not be serialized or added as an option. + * + * You can create options without values and then add values later. Does not + * check whether the option has already been added, but does check that you + * aren't adding a protected WordPress option. Care should be taken to not name + * options the same as the ones which are protected and to not add options + * that were already added. + * + * @package WordPress + * @subpackage Option + * @since 1.0.0 + * + * @uses do_action() Calls 'add_option' hook before adding the option. + * @uses do_action() Calls 'add_option_$option' and 'added_option' hooks on success. + * + * @param string $option Name of option to add. Expected to not be SQL-escaped. + * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped. + * @param mixed $deprecated Optional. Description. Not used anymore. + * @param bool $autoload Optional. Default is enabled. Whether to load the option when WordPress starts up. + * @return null returns when finished. + */ +function add_option( $option, $value = '', $deprecated = '', $autoload = 'yes' ) { + global $wpdb; - if ( empty($value) ) { - $meta_id = $wpdb->get_var("SELECT meta_id FROM $wpdb->postmeta WHERE -post_id = '$post_id' AND meta_key = '$key'"); - } 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'"); - } + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.3' ); - if ( !$meta_id ) + $option = trim($option); + if ( empty($option) ) return false; - if ( empty($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]); - } + wp_protect_special_option( $option ); - unset($post_meta_cache['$post_id'][$key]); + if ( is_object($value) ) + $value = wp_clone($value); - return true; -} + $value = sanitize_option( $option, $value ); -function get_post_meta($post_id, $key, $single = false) { - global $wpdb, $post_meta_cache; + // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query + $notoptions = wp_cache_get( 'notoptions', 'options' ); + if ( !is_array( $notoptions ) || !isset( $notoptions[$option] ) ) + if ( false !== get_option( $option ) ) + return; - if ( isset($post_meta_cache[$post_id][$key]) ) { - if ( $single ) { - return maybe_unserialize( $post_meta_cache[$post_id][$key][0] ); + $_value = $value; + $value = maybe_serialize( $value ); + $autoload = ( 'no' === $autoload ) ? 'no' : 'yes'; + do_action( 'add_option', $option, $_value ); + if ( ! defined( 'WP_INSTALLING' ) ) { + if ( 'yes' == $autoload ) { + $alloptions = wp_load_alloptions(); + $alloptions[$option] = $value; + wp_cache_set( 'alloptions', $alloptions, 'options' ); } else { - return maybe_unserialize( $post_meta_cache[$post_id][$key] ); - } - } - - $metalist = $wpdb->get_results("SELECT meta_value FROM $wpdb->postmeta WHERE post_id = '$post_id' AND meta_key = '$key'", ARRAY_N); - - $values = array(); - if ( $metalist ) { - foreach ($metalist as $metarow) { - $values[] = $metarow[0]; + wp_cache_set( $option, $value, 'options' ); } } - if ( $single ) { - if ( count($values) ) { - $return = maybe_unserialize( $values[0] ); - } else { - return ''; - } - } else { - $return = $values; + // This option exists now + $notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh + if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) { + unset( $notoptions[$option] ); + wp_cache_set( 'notoptions', $notoptions, 'options' ); } - return maybe_unserialize($return); -} - -function update_post_meta($post_id, $key, $value, $prev_value = '') { - global $wpdb, $post_meta_cache; - - $original_value = $value; - if ( is_array($value) || is_object($value) ) - $value = $wpdb->escape(serialize($value)); - - $original_prev = $prev_value; - if ( is_array($prev_value) || is_object($prev_value) ) - $prev_value = $wpdb->escape(serialize($prev_value)); + $result = $wpdb->query( $wpdb->prepare( "INSERT INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, %s) ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`)", $option, $value, $autoload ) ); - if (! $wpdb->get_var("SELECT meta_key FROM $wpdb->postmeta WHERE meta_key -= '$key' AND post_id = '$post_id'") ) { - return false; - } - - if ( empty($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; + if ( $result ) { + do_action( "add_option_{$option}", $option, $_value ); + do_action( 'added_option', $option, $_value ); + return true; } - - return true; + return false; } -// Deprecated. Use get_post(). -function get_postdata($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 - ); - - return $postdata; -} +/** + * Removes option by name. Prevents removal of protected WordPress options. + * + * @package WordPress + * @subpackage Option + * @since 1.2.0 + * + * @uses do_action() Calls 'delete_option' hook before option is deleted. + * @uses do_action() Calls 'deleted_option' and 'delete_option_$option' hooks on success. + * + * @param string $option Name of option to remove. Expected to not be SQL-escaped. + * @return bool True, if option is successfully deleted. False on failure. + */ +function delete_option( $option ) { + global $wpdb; -// Retrieves post data given a post ID or post object. -// Handles post caching. -function &get_post(&$post, $output = OBJECT) { - global $post_cache, $wpdb; + wp_protect_special_option( $option ); - if ( empty($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 { - 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; + // Get the ID, if no ID then return + $row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) ); + if ( is_null( $row ) ) + return false; + do_action( 'delete_option', $option ); + $result = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->options WHERE option_name = %s", $option) ); + if ( ! defined( 'WP_INSTALLING' ) ) { + if ( 'yes' == $row->autoload ) { + $alloptions = wp_load_alloptions(); + if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) { + unset( $alloptions[$option] ); + wp_cache_set( 'alloptions', $alloptions, 'options' ); + } + } else { + wp_cache_delete( $option, 'options' ); } } - - if ( defined(WP_IMPORTING) ) - unset($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; + if ( $result ) { + do_action( "delete_option_$option", $option ); + do_action( 'deleted_option', $option ); + return true; } + return false; } -function &get_children($post = 0, $output = OBJECT) { - global $post_cache, $wpdb; - - if ( empty($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; - } - - $post_parent = (int) $post_parent; - - $query = "SELECT * FROM $wpdb->posts WHERE post_parent = $post_parent"; - - $children = $wpdb->get_results($query); - - if ( $children ) { - foreach ( $children as $key => $child ) { - $post_cache[$child->ID] =& $children[$key]; - $kids[$child->ID] =& $children[$key]; - } +/** + * Delete a transient + * + * @since 2.8.0 + * @package WordPress + * @subpackage Transient + * + * @uses do_action() Calls 'delete_transient_$transient' hook before transient is deleted. + * @uses do_action() Calls 'deleted_transient' hook on success. + * + * @param string $transient Transient name. Expected to not be SQL-escaped. + * @return bool true if successful, false otherwise + */ +function delete_transient( $transient ) { + global $_wp_using_ext_object_cache; + + do_action( 'delete_transient_' . $transient, $transient ); + + if ( $_wp_using_ext_object_cache ) { + $result = wp_cache_delete( $transient, 'transient' ); } else { - return false; + $option_timeout = '_transient_timeout_' . $transient; + $option = '_transient_' . $transient; + $result = delete_option( $option ); + if ( $result ) + delete_option( $option_timeout ); } - 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; + if ( $result ) + do_action( 'deleted_transient', $transient ); + return $result; +} + +/** + * Get the value of a transient + * + * If the transient does not exist or does not have a value, then the return value + * will be false. + * + * @uses apply_filters() Calls 'pre_transient_$transient' hook before checking the transient. + * Any value other than false will "short-circuit" the retrieval of the transient + * and return the returned value. + * @uses apply_filters() Calls 'transient_$option' hook, after checking the transient, with + * the transient value. + * + * @since 2.8.0 + * @package WordPress + * @subpackage Transient + * + * @param string $transient Transient name. Expected to not be SQL-escaped + * @return mixed Value of transient + */ +function get_transient( $transient ) { + global $_wp_using_ext_object_cache; + + $pre = apply_filters( 'pre_transient_' . $transient, false ); + if ( false !== $pre ) + return $pre; + + if ( $_wp_using_ext_object_cache ) { + $value = wp_cache_get( $transient, 'transient' ); } else { - return $kids; - } -} + $transient_option = '_transient_' . $transient; + if ( ! defined( 'WP_INSTALLING' ) ) { + // If option is not in alloptions, it is not autoloaded and thus has a timeout + $alloptions = wp_load_alloptions(); + if ( !isset( $alloptions[$transient_option] ) ) { + $transient_timeout = '_transient_timeout_' . $transient; + if ( get_option( $transient_timeout ) < time() ) { + delete_option( $transient_option ); + delete_option( $transient_timeout ); + return false; + } + } + } -function set_page_path($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; + $value = get_option( $transient_option ); } - - $page->fullpath = $path; - - return $page; -} - -// Retrieves page data given a page ID or page object. -// Handles page caching. -function &get_page(&$page, $output = OBJECT) { - global $wpdb; - if ( empty($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; + return apply_filters( 'transient_' . $transient, $value ); +} + +/** + * Set/update the value of a transient + * + * You do not need to serialize values. If the value needs to be serialized, then + * it will be serialized before it is set. + * + * @since 2.8.0 + * @package WordPress + * @subpackage Transient + * + * @uses apply_filters() Calls 'pre_set_transient_$transient' hook to allow overwriting the + * transient value to be stored. + * @uses do_action() Calls 'set_transient_$transient' and 'setted_transient' hooks on success. + * + * @param string $transient Transient name. Expected to not be SQL-escaped. + * @param mixed $value Transient value. Expected to not be SQL-escaped. + * @param int $expiration Time until expiration in seconds, default 0 + * @return bool False if value was not set and true if value was set. + */ +function set_transient( $transient, $value, $expiration = 0 ) { + global $_wp_using_ext_object_cache; + + $value = apply_filters( 'pre_set_transient_' . $transient, $value ); + + if ( $_wp_using_ext_object_cache ) { + $result = wp_cache_set( $transient, $value, 'transient', $expiration ); } else { - if ( isset($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. + $transient_timeout = '_transient_timeout_' . $transient; + $transient = '_transient_' . $transient; + if ( false === get_option( $transient ) ) { + $autoload = 'yes'; + if ( $expiration ) { + $autoload = 'no'; + add_option( $transient_timeout, time() + $expiration, '', 'no' ); + } + $result = add_option( $transient, $value, '', $autoload ); } 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'); + if ( $expiration ) + update_option( $transient_timeout, time() + $expiration ); + $result = update_option( $transient, $value ); } } - - if (!isset($_page->fullpath)) { - $_page = set_page_path($_page); - wp_cache_replace($_page->cat_ID, $_page, 'pages'); + if ( $result ) { + do_action( 'set_transient_' . $transient ); + do_action( 'setted_transient', $transient ); } + return $result; +} + +/** + * Saves and restores user interface settings stored in a cookie. + * + * Checks if the current user-settings cookie is updated and stores it. When no + * cookie exists (different browser used), adds the last saved cookie restoring + * the settings. + * + * @package WordPress + * @subpackage Option + * @since 2.7.0 + */ +function wp_user_settings() { + + if ( ! is_admin() ) + return; - 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 $_page; - } -} + if ( defined('DOING_AJAX') ) + return; -function set_category_path($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; - } - - $cat->fullpath = $path; + if ( ! $user = wp_get_current_user() ) + return; - return $cat; -} + $settings = get_user_option( 'user-settings', $user->ID ); -// Retrieves category data given a category ID or category object. -// Handles category caching. -function &get_category(&$category, $output = OBJECT) { - global $wpdb; + if ( isset( $_COOKIE['wp-settings-' . $user->ID] ) ) { + $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] ); - if ( empty($category) ) - return null; + if ( ! empty( $cookie ) && strpos( $cookie, '=' ) ) { + if ( $cookie == $settings ) + return; - if ( is_object($category) ) { - wp_cache_add($category->cat_ID, $category, 'category'); - $_category = $category; - } else { - 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'); + $last_time = (int) get_user_option( 'user-settings-time', $user->ID ); + $saved = isset( $_COOKIE['wp-settings-time-' . $user->ID]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user->ID] ) : 0; + + if ( $saved > $last_time ) { + update_user_option( $user->ID, 'user-settings', $cookie, false ); + update_user_option( $user->ID, 'user-settings-time', time() - 5, false ); + return; + } } } - $_category = apply_filters('get_category', $_category); + setcookie( 'wp-settings-' . $user->ID, $settings, time() + 31536000, SITECOOKIEPATH ); + setcookie( 'wp-settings-time-' . $user->ID, time(), time() + 31536000, SITECOOKIEPATH ); + $_COOKIE['wp-settings-' . $user->ID] = $settings; +} + +/** + * Retrieve user interface setting value based on setting name. + * + * @package WordPress + * @subpackage Option + * @since 2.7.0 + * + * @param string $name The name of the setting. + * @param string $default Optional default value to return when $name is not set. + * @return mixed the last saved user setting or the default value/false if it doesn't exist. + */ +function get_user_setting( $name, $default = false ) { + + $all = get_all_user_settings(); + + return isset($all[$name]) ? $all[$name] : $default; +} + +/** + * Add or update user interface setting. + * + * Both $name and $value can contain only ASCII letters, numbers and underscores. + * This function has to be used before any output has started as it calls setcookie(). + * + * @package WordPress + * @subpackage Option + * @since 2.8.0 + * + * @param string $name The name of the setting. + * @param string $value The value for the setting. + * @return bool true if set successfully/false if not. + */ +function set_user_setting( $name, $value ) { + + if ( headers_sent() ) + return false; - if ( !isset($_category->fullpath) ) { - $_category = set_category_path($_category); - wp_cache_replace($_category->cat_ID, $_category, 'category'); - } + $all = get_all_user_settings(); + $name = preg_replace( '/[^A-Za-z0-9_]+/', '', $name ); - 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)); - } else { - return $_category; - } + if ( empty($name) ) + return false; + + $all[$name] = $value; + + return wp_set_all_user_settings($all); } -// Retrieves comment data given a comment ID or comment object. -// Handles comment caching. -function &get_comment(&$comment, $output = OBJECT) { - global $comment_cache, $wpdb; +/** + * Delete user interface settings. + * + * Deleting settings would reset them to the defaults. + * This function has to be used before any output has started as it calls setcookie(). + * + * @package WordPress + * @subpackage Option + * @since 2.7.0 + * + * @param mixed $names The name or array of names of the setting to be deleted. + * @return bool true if deleted successfully/false if not. + */ +function delete_user_setting( $names ) { - if ( empty($comment) ) - return null; + if ( headers_sent() ) + return false; - if ( is_object($comment) ) { - if ( !isset($comment_cache[$comment->comment_ID]) ) - $comment_cache[$comment->comment_ID] = &$comment; - $_comment = & $comment_cache[$comment->comment_ID]; - } else { - 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]; + $all = get_all_user_settings(); + $names = (array) $names; + + foreach ( $names as $name ) { + if ( isset($all[$name]) ) { + unset($all[$name]); + $deleted = true; } } - 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 $_comment; - } -} + if ( isset($deleted) ) + return wp_set_all_user_settings($all); -function get_catname($cat_ID) { - $category = &get_category($cat_ID); - return $category->cat_name; + return false; } -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; -} +/** + * Retrieve all user interface settings. + * + * @package WordPress + * @subpackage Option + * @since 2.7.0 + * + * @return array the last saved user settings or empty array. + */ +function get_all_user_settings() { + global $_updated_user_settings; -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'); - } - - return $page_ids; -} + if ( ! $user = wp_get_current_user() ) + return array(); -function gzip_compression() { - if ( !get_settings('gzipcompression') ) return false; + if ( isset($_updated_user_settings) && is_array($_updated_user_settings) ) + return $_updated_user_settings; - if ( extension_loaded('zlib') ) { - ob_start('ob_gzhandler'); - } -} + $all = array(); + if ( isset($_COOKIE['wp-settings-' . $user->ID]) ) { + $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] ); + if ( $cookie && strpos($cookie, '=') ) // the '=' cannot be 1st char + parse_str($cookie, $all); -// functions to count the page generation time (from phpBB2) -// ( or just any time between timer_start() and timer_stop() ) + } else { + $option = get_user_option('user-settings', $user->ID); + if ( $option && is_string($option) ) + parse_str( $option, $all ); + } -function timer_stop($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; - if ( $display ) - echo number_format($timetotal,$precision); - return $timetotal; + return $all; } -function weblog_ping($server = '', $path = '') { - global $wp_version; - include_once (ABSPATH . WPINC . '/class-IXR.php'); - - // 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; +/** + * Private. Set all user interface settings. + * + * @package WordPress + * @subpackage Option + * @since 2.8.0 + * + * @param unknown $all + * @return bool + */ +function wp_set_all_user_settings($all) { + global $_updated_user_settings; - // 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); -} + if ( ! $user = wp_get_current_user() ) + return false; -function generic_ping($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); - } + $_updated_user_settings = $all; + $settings = ''; + foreach ( $all as $k => $v ) { + $v = preg_replace( '/[^A-Za-z0-9_]+/', '', $v ); + $settings .= $k . '=' . $v . '&'; } - return $post_id; -} - -// Send a Trackback -function trackback($trackback_url, $title, $excerpt, $ID) { - global $wpdb, $wp_version; + $settings = rtrim($settings, '&'); - if ( empty($trackback_url) ) - return; + update_user_option( $user->ID, 'user-settings', $settings, false ); + update_user_option( $user->ID, 'user-settings-time', time(), false ); - $title = urlencode($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>/', $content, $matches); - $j = 0; - for ($i=0; $iID, 'user-settings', '', false ); + setcookie('wp-settings-' . $user->ID, ' ', time() - 31536000, SITECOOKIEPATH); +} + +/** + * Serialize data, if needed. + * + * @since 2.0.5 + * + * @param mixed $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 ); + + if ( is_serialized( $data ) ) + return serialize( $data ); + + 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. + * + * @package WordPress + * @subpackage XMLRPC + * @since 0.71 + * + * @global string $post_default_title Default XMLRPC 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[0]; - $post_title = preg_replace('/<title>/si', '', $post_title); - $post_title = preg_replace('/<\/title>/si', '', $post_title); + if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) { + $post_title = $matchtitle[1]; } else { $post_title = $post_default_title; } return $post_title; } -function xmlrpc_getpostcategory($content) { +/** + * 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. + * + * @package WordPress + * @subpackage XMLRPC + * @since 0.71 + * + * @global string $post_default_category Default XMLRPC 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); + if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) { + $post_category = trim( $matchcat[1], ',' ); + $post_category = explode( ',', $post_category ); } else { $post_category = $post_default_category; } return $post_category; } -function xmlrpc_removepostdata($content) { - $content = preg_replace('/<title>(.+?)<\/title>/si', '', $content); - $content = preg_replace('/<category>(.+?)<\/category>/si', '', $content); - $content = trim($content); +/** + * XMLRPC XML content without title and category elements. + * + * @package WordPress + * @subpackage XMLRPC + * @since 0.71 + * + * @param string $content XMLRPC 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 $content; } -function debug_fopen($filename, $mode) { +/** + * Open the file handle for debugging. + * + * This function is used for XMLRPC feature, but it is general purpose enough + * to be used in anywhere. + * + * @see fopen() for mode options. + * @package WordPress + * @subpackage Debug + * @since 0.71 + * @uses $debug Used for whether debugging is enabled. + * + * @param string $filename File path to debug file. + * @param string $mode Same as fopen() mode parameter. + * @return bool|resource File handle. False on failure. + */ +function debug_fopen( $filename, $mode ) { global $debug; - if ( $debug == 1 ) { - $fp = fopen($filename, $mode); + if ( 1 == $debug ) { + $fp = fopen( $filename, $mode ); return $fp; } else { return false; } } -function debug_fwrite($fp, $string) { +/** + * Write contents to the file used for debugging. + * + * Technically, this can be used to write to any file handle when the global + * $debug is set to 1 or true. + * + * @package WordPress + * @subpackage Debug + * @since 0.71 + * @uses $debug Used for whether debugging is enabled. + * + * @param resource $fp File handle for debugging file. + * @param string $string Content to write to debug file. + */ +function debug_fwrite( $fp, $string ) { global $debug; - if ( $debug == 1 ) { - fwrite($fp, $string); - } -} - -function debug_fclose($fp) { + if ( 1 == $debug ) + fwrite( $fp, $string ); +} + +/** + * Close the debugging file handle. + * + * Technically, this can be used to close any file handle when the global $debug + * is set to 1 or true. + * + * @package WordPress + * @subpackage Debug + * @since 0.71 + * @uses $debug Used for whether debugging is enabled. + * + * @param resource $fp Debug File handle. + */ +function debug_fclose( $fp ) { global $debug; - if ( $debug == 1 ) { - fclose($fp); - } -} - -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"); - } -} - + if ( 1 == $debug ) + fclose( $fp ); +} + +/** + * 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. + * + * @package WordPress + * @since 1.5.0 + * + * @uses $wpdb + * + * @param string $content Post Content + * @param int $post_ID Post ID + */ function do_enclose( $content, $post_ID ) { - global $wp_version, $wpdb; - include_once (ABSPATH . WPINC . '/class-IXR.php'); + global $wpdb; + + //TODO: Tidy this ghetto code up and make the debug code optional + include_once( ABSPATH . WPINC . '/class-IXR.php' ); - $log = debug_fopen(ABSPATH . '/enclosures.log', 'a'); + $log = debug_fopen( ABSPATH . 'enclosures.log', 'a' ); $post_links = array(); - debug_fwrite($log, 'BEGIN '.date('YmdHis', time())."\n"); + debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" ); $pung = get_enclosed( $post_ID ); @@ -1031,1476 +1199,3299 @@ function do_enclose( $content, $post_ID ) { $punc = '.:?\-'; $any = $ltrs . $gunk . $punc; - preg_match_all("{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp); + preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp ); - debug_fwrite($log, 'Post contents:'); - debug_fwrite($log, $content."\n"); + debug_fwrite( $log, 'Post contents:' ); + debug_fwrite( $log, $content . "\n" ); - foreach($post_links_temp[0] as $link_test) : - if ( !in_array($link_test, $pung) ) : // If we haven't pung it already - $test = parse_url($link_test); - if ( isset($test['query']) ) - $post_links[] = $link_test; - elseif (($test['path'] != '/') && ($test['path'] != '')) - $post_links[] = $link_test; - endif; - endforeach; + foreach ( $pung as $link_test ) { + if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post + $mid = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, like_escape( $link_test ) . '%') ); + do_action( 'delete_postmeta', $mid ); + $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN(%s)", implode( ',', $mid ) ) ); + do_action( 'deleted_postmeta', $mid ); + } + } + + foreach ( (array) $post_links_temp[0] as $link_test ) { + if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already + $test = @parse_url( $link_test ); + if ( false === $test ) + continue; + if ( isset( $test['query'] ) ) + $post_links[] = $link_test; + elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($test['path'] != '' ) ) + $post_links[] = $link_test; + } + } + + 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, like_escape( $url ) . '%' ) ) ) { - foreach ($post_links as $url) : - if ( $url != '' && !$wpdb->get_var("SELECT post_id FROM $wpdb->postmeta WHERE post_id = '$post_ID' AND meta_key = 'enclosure' AND meta_value LIKE ('$url%')") ) { if ( $headers = wp_get_http_headers( $url) ) { $len = (int) $headers['content-length']; - $type = $wpdb->escape( $headers['content-type'] ); + $type = $headers['content-type']; $allowed_types = array( 'video', 'audio' ); + + // 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 ( get_allowed_mime_types( ) as $exts => $mime ) { + if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) { + $type = $mime; + break; + } + } + } + } + if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) { $meta_value = "$url\n$len\n$type\n"; - $wpdb->query( "INSERT INTO `$wpdb->postmeta` ( `post_id` , `meta_key` , `meta_value` ) - VALUES ( '$post_ID', 'enclosure' , '$meta_value')" ); + $wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) ); + do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $meta_value ); } } } - endforeach; + } } -function wp_get_http_headers( $url, $red = 1 ) { - global $wp_version; +/** + * Perform a HTTP HEAD or GET request. + * + * If $file_path is a writable filename, this will do a GET request and write + * the file to that path. + * + * @since 2.5.0 + * + * @param string $url URL to fetch. + * @param string|bool $file_path Optional. File path to write request to. + * @param int $red (private) The number of Redirects followed, Upon 5 being hit, returns false. + * @return bool|string False on failure and string of headers if HEAD request. + */ +function wp_get_http( $url, $file_path = false, $red = 1 ) { @set_time_limit( 60 ); if ( $red > 5 ) - return false; + return false; + + $options = array(); + $options['redirection'] = 5; - $parts = parse_url( $url ); - $file = $parts['path'] . ($parts['query'] ? '?'.$parts['query'] : ''); - $host = $parts['host']; - if ( !isset( $parts['port'] ) ) - $parts['port'] = 80; + if ( false == $file_path ) + $options['method'] = 'HEAD'; + else + $options['method'] = 'GET'; - $head = "HEAD $file HTTP/1.1\r\nHOST: $host\r\nUser-Agent: WordPress/" . $wp_version . "\r\n\r\n"; + $response = wp_remote_request($url, $options); - $fp = @fsockopen($host, $parts['port'], $err_num, $err_msg, 3); - if ( !$fp ) + if ( is_wp_error( $response ) ) 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]; + $headers = wp_remote_retrieve_headers( $response ); + $headers['response'] = $response['response']['code']; + + // WP_HTTP no longer follows redirects for HEAD requests. + if ( 'HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset( $headers['location'] ) ) { + return wp_get_http( $headers['location'], $file_path, ++$red ); } - preg_match('/.*([0-9]{3}).*/', $response, $return); - $headers['response'] = $return[1]; // HTTP response code eg 204, 200, 404 + if ( false == $file_path ) + return $headers; + + // GET request - write it to the supplied filename + $out_fp = fopen($file_path, 'w'); + if ( !$out_fp ) + return $headers; - $code = $headers['response']; - if ( ('302' == $code || '301' == $code) && isset($headers['location']) ) - return wp_get_http_headers( $headers['location'], ++$red ); + fwrite( $out_fp, $response['body']); + fclose($out_fp); + clearstatcache(); return $headers; } -// Deprecated. Use the new post loop. -function start_wp() { - global $wp_query, $post; +/** + * Retrieve HTTP Headers from URL. + * + * @since 1.5.1 + * + * @param string $url + * @param bool $deprecated Not Used. + * @return bool|string False on failure, headers on success. + */ +function wp_get_http_headers( $url, $deprecated = false ) { + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.7' ); - // Since the old style loop is being used, advance the query iterator here. - $wp_query->next_post(); + $response = wp_remote_head( $url ); - setup_postdata($post); -} - -// Setup global post data. -function setup_postdata($post) { - global $id, $postdata, $authordata, $day, $page, $pages, $multipage, $more, $numpages, $wp_query; - global $pagenow; + if ( is_wp_error( $response ) ) + return false; - $id = $post->ID; + return wp_remote_retrieve_headers( $response ); +} - $authordata = get_userdata($post->post_author); +/** + * Whether today is a new day. + * + * @since 0.71 + * @uses $day Today + * @uses $previousday Previous day + * + * @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; +} - $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('/<!--nextpage-->/', $content) ) { - if ( $page > 1 ) - $more = 1; - $multipage = 1; - $content = str_replace("\n<!--nextpage-->\n", '<!--nextpage-->', $content); - $content = str_replace("\n<!--nextpage-->", '<!--nextpage-->', $content); - $content = str_replace("<!--nextpage-->\n", '<!--nextpage-->', $content); - $pages = explode('<!--nextpage-->', $content); - $numpages = count($pages); +/** + * 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. + * + * @see _http_build_query() Used to build the query + * @link http://us2.php.net/manual/en/function.http-build-query.php more on what + * http_build_query() does. + * + * @since 2.3.0 + * + * @param array $data URL-encode key/value pairs. + * @return string URL encoded string + */ +function build_query( $data ) { + return _http_build_query( $data, null, '&', '', false ); +} + +/** + * Retrieve a modified URL query string. + * + * You can rebuild the URL and append a new query variable to the URL query by + * using this function. You can also retrieve the full URL with query data. + * + * 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. + * + * @since 1.5.0 + * + * @param mixed $param1 Either newkey or an associative_array + * @param mixed $param2 Either newvalue or oldquery or uri + * @param mixed $param3 Optional. Old query or uri + * @return string New URL query string. + */ +function add_query_arg() { + $ret = ''; + if ( is_array( func_get_arg(0) ) ) { + if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) ) + $uri = $_SERVER['REQUEST_URI']; + else + $uri = @func_get_arg( 1 ); } else { - $pages[0] = $post->post_content; - $multipage = 0; + if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) ) + $uri = $_SERVER['REQUEST_URI']; + else + $uri = @func_get_arg( 2 ); } - return true; -} - -// Setup global user vars. Used by set_current_user() for back compat. -function setup_userdata($user_id = '') { - global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity; - - if ( '' == $user_id ) - $user = wp_get_current_user(); - else - $user = new WP_User($user_id); - - 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; -} + if ( $frag = strstr( $uri, '#' ) ) + $uri = substr( $uri, 0, -strlen( $frag ) ); + else + $frag = ''; -function is_new_day() { - global $day, $previousday; - if ( $day != $previousday ) { - return(1); + if ( preg_match( '|^https?://|i', $uri, $matches ) ) { + $protocol = $matches[0]; + $uri = substr( $uri, strlen( $protocol ) ); } else { - return(0); + $protocol = ''; } -} -// Filters: these are the core of WP's plugin architecture - -function merge_filters($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]); + if ( strpos( $uri, '?' ) !== false ) { + $parts = explode( '?', $uri, 2 ); + if ( 1 == count( $parts ) ) { + $base = '?'; + $query = $parts[0]; + } else { + $base = $parts[0] . '?'; + $query = $parts[1]; } + } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) { + $base = $uri . '?'; + $query = ''; + } else { + $base = ''; + $query = $uri; } - if ( isset($wp_filter[$tag]) ) - ksort( $wp_filter[$tag] ); -} - -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; + wp_parse_str( $query, $qs ); + $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string + if ( is_array( func_get_arg( 0 ) ) ) { + $kayvees = func_get_arg( 0 ); + $qs = array_merge( $qs, $kayvees ); + } else { + $qs[func_get_arg( 0 )] = func_get_arg( 1 ); } - foreach ($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); - } - } + foreach ( (array) $qs as $k => $v ) { + if ( $v === false ) + unset( $qs[$k] ); } - 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; - } + $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 list from the query string. + * + * @since 1.5.0 + * + * @param string|array $key Query key or keys to remove. + * @param bool $query When false uses the $_SERVER value. + * @return string New URL query string. + */ +function remove_query_arg( $key, $query=false ) { + if ( is_array( $key ) ) { // removing multiple keys + foreach ( $key as $k ) + $query = add_query_arg( $k, false, $query ); + return $query; + } + return add_query_arg( $key, false, $query ); +} + +/** + * Walks the array while sanitizing the contents. + * + * @since 0.71 + * + * @param array $array Array to used 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 ); } } - - // 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; + return $array; } -function remove_filter($tag, $function_to_remove, $priority = 10, $accepted_args = 1) { - global $wp_filter; +/** + * HTTP request for URI to retrieve content. + * + * @since 1.5.1 + * @uses wp_remote_get() + * + * @param string $uri URI/URL of web page to retrieve. + * @return bool|string HTTP content. False on failure. + */ +function wp_remote_fopen( $uri ) { + $parsed_url = @parse_url( $uri ); - // rebuild the list of filters - if ( isset($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; - } - } - $wp_filter[$tag]["$priority"] = $new_function_list; - } - return true; -} + if ( !$parsed_url || !is_array( $parsed_url ) ) + return false; -// The *_action functions are just aliases for the *_filter functions, they take special strings instead of generic content + $options = array(); + $options['timeout'] = 10; -function do_action($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); + $response = wp_remote_get( $uri, $options ); - merge_filters($tag); + if ( is_wp_error( $response ) ) + return false; - if ( !isset($wp_filter[$tag]) ) { - return; + return $response['body']; +} + +/** + * Set up the WordPress query. + * + * @since 2.0.0 + * + * @param string $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 + * + * @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 ) ) { + $wp_header_to_desc = array( + 100 => 'Continue', + 101 => 'Switching Protocols', + 102 => 'Processing', + + 200 => 'OK', + 201 => 'Created', + 202 => 'Accepted', + 203 => 'Non-Authoritative Information', + 204 => 'No Content', + 205 => 'Reset Content', + 206 => 'Partial Content', + 207 => 'Multi-Status', + 226 => 'IM Used', + + 300 => 'Multiple Choices', + 301 => 'Moved Permanently', + 302 => 'Found', + 303 => 'See Other', + 304 => 'Not Modified', + 305 => 'Use Proxy', + 306 => 'Reserved', + 307 => 'Temporary Redirect', + + 400 => 'Bad Request', + 401 => 'Unauthorized', + 402 => 'Payment Required', + 403 => 'Forbidden', + 404 => 'Not Found', + 405 => 'Method Not Allowed', + 406 => 'Not Acceptable', + 407 => 'Proxy Authentication Required', + 408 => 'Request Timeout', + 409 => 'Conflict', + 410 => 'Gone', + 411 => 'Length Required', + 412 => 'Precondition Failed', + 413 => 'Request Entity Too Large', + 414 => 'Request-URI Too Long', + 415 => 'Unsupported Media Type', + 416 => 'Requested Range Not Satisfiable', + 417 => 'Expectation Failed', + 422 => 'Unprocessable Entity', + 423 => 'Locked', + 424 => 'Failed Dependency', + 426 => 'Upgrade Required', + + 500 => 'Internal Server Error', + 501 => 'Not Implemented', + 502 => 'Bad Gateway', + 503 => 'Service Unavailable', + 504 => 'Gateway Timeout', + 505 => 'HTTP Version Not Supported', + 506 => 'Variant Also Negotiates', + 507 => 'Insufficient Storage', + 510 => 'Not Extended' + ); } - foreach ($wp_filter[$tag] as $priority => $functions) { - if ( !is_null($functions) ) { - foreach($functions as $function) { - $function_name = $function['function']; - $accepted_args = $function['accepted_args']; + if ( isset( $wp_header_to_desc[$code] ) ) + return $wp_header_to_desc[$code]; + else + return ''; +} + +/** + * Set HTTP status header. + * + * @since 2.0.0 + * @uses apply_filters() Calls 'status_header' on status header string, HTTP + * HTTP code, HTTP code description, and protocol string as separate + * parameters. + * + * @param int $header HTTP status code + * @return unknown + */ +function status_header( $header ) { + $text = get_status_header_desc( $header ); + + if ( empty( $text ) ) + return false; - 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; - } + $protocol = $_SERVER["SERVER_PROTOCOL"]; + if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol ) + $protocol = 'HTTP/1.0'; + $status_header = "$protocol $header $text"; + if ( function_exists( 'apply_filters' ) ) + $status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol ); + + return @header( $status_header, true, $header ); +} + +/** + * Gets 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 + * + * @uses apply_filters() + * @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', + 'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT', + 'Cache-Control' => 'no-cache, must-revalidate, max-age=0', + 'Pragma' => 'no-cache', + ); - $string = call_user_func_array($function_name, $the_args); - } - } + if ( function_exists('apply_filters') ) { + $headers = (array) apply_filters('nocache_headers', $headers); } + return $headers; } -function add_action($tag, $function_to_add, $priority = 10, $accepted_args = 1) { - add_filter($tag, $function_to_add, $priority, $accepted_args); +/** + * Sets 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 + * @uses wp_get_nocache_headers() + */ +function nocache_headers() { + $headers = wp_get_nocache_headers(); + foreach( $headers as $name => $field_value ) + @header("{$name}: {$field_value}"); +} + +/** + * Set the headers for caching for 10 days with JavaScript content type. + * + * @since 2.1.0 + */ +function cache_javascript_headers() { + $expiresOffset = 864000; // 10 days + header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) ); + header( "Vary: Accept-Encoding" ); // Handle proxies + header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" ); +} + +/** + * Retrieve the number of database queries during the WordPress execution. + * + * @since 2.0.0 + * + * @return int Number of database queries + */ +function get_num_queries() { + global $wpdb; + return $wpdb->num_queries; } -function remove_action($tag, $function_to_remove, $priority = 10, $accepted_args = 1) { - remove_filter($tag, $function_to_remove, $priority, $accepted_args); -} +/** + * Whether input is yes or no. Must be 'y' to be true. + * + * @since 1.0.0 + * + * @param string $yn Character string containing either 'y' or 'n' + * @return bool True if yes, false on anything else + */ +function bool_from_yn( $yn ) { + return ( strtolower( $yn ) == 'y' ); +} + +/** + * Loads 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 + * @uses $wp_query Used to tell if the use a comment feed. + * @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed. + */ +function do_feed() { + global $wp_query; + + $feed = get_query_var( 'feed' ); -function get_page_uri($page_id) { - $page = get_page($page_id); - $uri = urldecode($page->post_name); + // Remove the pad, if present. + $feed = preg_replace( '/^_+/', '', $feed ); - // A page cannot be it's own parent. - if ( $page->post_parent == $page->ID ) - return $uri; + if ( $feed == '' || $feed == 'feed' ) + $feed = get_default_feed(); - while ($page->post_parent != 0) { - $page = get_page($page->post_parent); - $uri = urldecode($page->post_name) . "/" . $uri; + $hook = 'do_feed_' . $feed; + if ( !has_action($hook) ) { + $message = sprintf( __( 'ERROR: %s is not a valid feed template.' ), esc_html($feed)); + wp_die( $message, '', array( 'response' => 404 ) ); } - return $uri; -} + do_action( $hook, $wp_query->is_comment_feed ); +} + +/** + * Load the RDF RSS 0.91 Feed template. + * + * @since 2.1.0 + */ +function do_feed_rdf() { + load_template( ABSPATH . WPINC . '/feed-rdf.php' ); +} + +/** + * Load the RSS 1.0 Feed Template + * + * @since 2.1.0 + */ +function do_feed_rss() { + load_template( ABSPATH . WPINC . '/feed-rss.php' ); +} + +/** + * Load either the RSS2 comment feed or the RSS2 posts feed. + * + * @since 2.1.0 + * + * @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 + * + * @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 robot.txt file content. + * + * The echo content should be with usage of the permalinks or for creating the + * robot.txt file. + * + * @since 2.1.0 + * @uses do_action() Calls 'do_robotstxt' hook for displaying robot.txt rules. + */ +function do_robots() { + header( 'Content-Type: text/plain; charset=utf-8' ); + + do_action( 'do_robotstxt' ); + + $output = ''; + $public = get_option( 'blog_public' ); + if ( '0' == $public ) { + $output .= "User-agent: *\n"; + $output .= "Disallow: /\n"; + } else { + $output .= "User-agent: *\n"; + $output .= "Disallow:\n"; + } -function get_posts($args) { + echo apply_filters('robots_txt', $output, $public); +} + +/** + * Test whether blog 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 option siteurl for whether WordPress is installed. + * + * @since 2.1.0 + * @uses $wpdb + * + * @return bool Whether blog is already installed. + */ +function is_blog_installed() { 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); + // Check cache first. If options table goes away and we have true cached, oh well. + if ( wp_cache_get( 'is_blog_installed' ) ) + return true; - return $posts; -} + $suppress = $wpdb->suppress_errors(); + if ( ! defined( '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( $suppress ); -function &query_posts($query) { - global $wp_query; - return $wp_query->query($query); -} + $installed = !empty( $installed ); + wp_cache_set( 'is_blog_installed', $installed ); -function update_post_cache(&$posts) { - global $post_cache; + if ( $installed ) + return true; - if ( !$posts ) - return; + $suppress = $wpdb->suppress_errors(); + $tables = $wpdb->get_col('SHOW TABLES'); + $wpdb->suppress_errors( $suppress ); + + $wp_tables = $wpdb->tables(); + // Loop over the WP tables. If none exist, then scratch install is allowed. + // If one or more exist, suggest table repair since we got here because the options + // table could not be accessed. + foreach ( $wp_tables as $table ) { + // If one of the WP tables exist, then we are in an insane state. + if ( in_array( $table, $tables ) ) { + // 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 == $table ) + continue; - for ($i = 0; $i < count($posts); $i++) { - $post_cache[$posts[$i]->ID] = &$posts[$i]; + // If visiting repair.php, return true and let it take over. + if ( defined('WP_REPAIRING') ) + return true; + // Die with a DB error. + $wpdb->error = sprintf( /*WP_I18N_NO_TABLES*/'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.'/*/WP_I18N_NO_TABLES*/, 'maint/repair.php?referrer=is_blog_installed' ); + dead_db(); + } } -} -function clean_post_cache($id) { - global $post_cache; + wp_cache_set( 'is_blog_installed', false ); - if ( isset( $post_cache[$id] ) ) - unset( $post_cache[$id] ); + return false; } -function update_page_cache(&$pages) { - global $page_cache; - - if ( !$pages ) - return; +/** + * Retrieve URL with nonce added to URL query. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @param string $actionurl URL to add nonce action + * @param string $action Optional. Nonce action name + * @return string URL with nonce action added. + */ +function wp_nonce_url( $actionurl, $action = -1 ) { + $actionurl = str_replace( '&', '&', $actionurl ); + return esc_html( add_query_arg( '_wpnonce', 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. + * + * If you set $echo to true and set $referer to true, then you will need to + * retrieve the {@link wp_referer_field() wp referer field}. If you have the + * $referer set to true and are echoing the nonce field, it will also echo the + * referer field. + * + * The $action and $name are optional, but if you want to have better security, + * it is strongly suggested to set those two parameters. It is easier to just + * call the function without any parameters, because validation of the nonce + * doesn't require any parameters, but since crackers know what the default is + * it won't be difficult for them to find a way around your nonce and cause + * damage. + * + * The input name will be whatever $name value you gave. The input value will be + * the nonce creation value. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @param string $action Optional. Action name. + * @param string $name Optional. Nonce name. + * @param bool $referer Optional, default true. Whether to set the referer field for validation. + * @param bool $echo Optional, default true. Whether to display or return hidden form field. + * @return string Nonce field. + */ +function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) { + $name = esc_attr( $name ); + $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />'; + if ( $echo ) + echo $nonce_field; + + if ( $referer ) + wp_referer_field( $echo ); + + 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. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @param bool $echo Whether to echo or return the referer field. + * @return string Referer field. + */ +function wp_referer_field( $echo = true ) { + $ref = esc_attr( $_SERVER['REQUEST_URI'] ); + $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />'; + + 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 {@link wp_referer_field()}, if that was posted already or it will + * be the current page, if it doesn't exist. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @param bool $echo Whether to echo the original http referer + * @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to. + * @return string Original referer field. + */ +function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) { + $jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI']; + $ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to; + $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />'; + if ( $echo ) + echo $orig_referer_field; + return $orig_referer_field; +} + +/** + * Retrieve referer from '_wp_http_referer', HTTP referer, or current page respectively. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @return string|bool False on failure. Referer URL on success. + */ +function wp_get_referer() { + $ref = ''; + if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) + $ref = $_REQUEST['_wp_http_referer']; + else if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) + $ref = $_SERVER['HTTP_REFERER']; + + if ( $ref !== $_SERVER['REQUEST_URI'] ) + return $ref; + return false; +} - for ($i = 0; $i < count($pages); $i++) { - $page_cache[$pages[$i]->ID] = &$pages[$i]; - wp_cache_add($pages[$i]->ID, $pages[$i], 'pages'); - } +/** + * Retrieve original referer that was posted, if it exists. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @return string|bool False if no original referer or original referer if set. + */ +function wp_get_original_referer() { + if ( !empty( $_REQUEST['_wp_original_http_referer'] ) ) + return $_REQUEST['_wp_original_http_referer']; + return false; } +/** + * 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 ) { + // from php.net/mkdir user contributed notes + $target = str_replace( '//', '/', $target ); + + // safe mode fails with a trailing slash under certain PHP versions. + $target = rtrim($target, '/'); // Use rtrim() instead of untrailingslashit to avoid formatting.php dependency. + if ( empty($target) ) + $target = '/'; + + if ( file_exists( $target ) ) + return @is_dir( $target ); + + // Attempting to create the directory may clutter up our display. + if ( @mkdir( $target ) ) { + $stat = @stat( dirname( $target ) ); + $dir_perms = $stat['mode'] & 0007777; // Get the permission bits. + @chmod( $target, $dir_perms ); + return true; + } elseif ( is_dir( dirname( $target ) ) ) { + return false; + } -function clean_page_cache($id) { - global $page_cache; + // If the above failed, attempt to create the parent node, then try again. + if ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) ) + return wp_mkdir_p( $target ); - if ( isset( $page_cache[$id] ) ) - unset( $page_cache[$id] ); + return false; } -function update_post_category_cache($post_ids) { - global $wpdb, $category_cache; +/** + * Test if a give filesystem path is absolute ('/foo/bar', '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) == $path ) + return true; - if ( empty($post_ids) ) - return; + if ( strlen($path) == 0 || $path[0] == '.' ) + return false; - if ( is_array($post_ids) ) - $post_ids = implode(',', $post_ids); + // windows allows absolute paths like this + if ( preg_match('#^[a-zA-Z]:\\\\#', $path) ) + return true; - $dogs = $wpdb->get_results("SELECT post_id, category_id FROM $wpdb->post2cat WHERE post_id IN ($post_ids)"); + // a path starting with / or \ is absolute; anything else is relative + return (bool) preg_match('#^[/\\\\]#', $path); +} + +/** + * Join two filesystem paths together (e.g. '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 + * @param string $path + * @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, '/'); +} + +/** + * 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' - set to false. + * + * @since 2.0.0 + * @uses apply_filters() Calls 'upload_dir' on returned array. + * + * @param string $time Optional. Time formatted in 'yyyy/mm'. + * @return array See above for description. + */ +function wp_upload_dir( $time = null ) { + global $switched; + $siteurl = get_option( 'siteurl' ); + $upload_path = get_option( 'upload_path' ); + $upload_path = trim($upload_path); + $main_override = is_multisite() && defined( 'MULTISITE' ) && is_main_site(); + if ( empty($upload_path) ) { + $dir = WP_CONTENT_DIR . '/uploads'; + } else { + $dir = $upload_path; + if ( 'wp-content/uploads' == $upload_path ) { + $dir = WP_CONTENT_DIR . '/uploads'; + } elseif ( 0 !== strpos($dir, ABSPATH) ) { + // $dir is absolute, $upload_path is (maybe) relative to ABSPATH + $dir = path_join( ABSPATH, $dir ); + } + } - if ( empty($dogs) ) - return; - - foreach ($dogs as $catt) - $category_cache[$catt->post_id][$catt->category_id] = &get_category($catt->category_id); -} + 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 ) . $upload_path; + } -function update_post_caches(&$posts) { - global $post_cache, $category_cache, $comment_count_cache, $post_meta_cache; - global $wpdb; + if ( defined('UPLOADS') && !$main_override && ( !isset( $switched ) || $switched === false ) ) { + $dir = ABSPATH . UPLOADS; + $url = trailingslashit( $siteurl ) . UPLOADS; + } - // No point in doing all this work if we didn't match any posts. - if ( !$posts ) - return; + if ( is_multisite() && !$main_override && ( !isset( $switched ) || $switched === false ) ) { + if ( defined( 'BLOGUPLOADDIR' ) ) + $dir = untrailingslashit(BLOGUPLOADDIR); + $url = str_replace( UPLOADS, 'files', $url ); + } - // Get the categories for all the posts - for ($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; + $bdir = $dir; + $burl = $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"; } - $post_id_list = implode(',', $post_id_array); + $dir .= $subdir; + $url .= $subdir; - update_post_category_cache($post_id_list); + $uploads = apply_filters( 'upload_dir', array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $bdir, 'baseurl' => $burl, 'error' => false ) ); - // 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 = $metarow['post_id']; - $mkey = $metarow['meta_key']; - $mval = $metarow['meta_value']; + // Make sure we have an uploads dir + if ( ! wp_mkdir_p( $uploads['path'] ) ) { + $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] ); + return array( 'error' => $message ); + } - // Force subkeys to be array type: - if ( !isset($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(); + return $uploads; +} + +/** + * 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 + * @param string $filename + * @param mixed $unique_filename_callback Callback. + * @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 + $info = pathinfo($filename); + $ext = !empty($info['extension']) ? '.' . $info['extension'] : ''; + $name = basename($filename, $ext); + + // edge case: if file is named '.ext', treat as an empty name + if ( $name === $ext ) + $name = ''; + + // Increment the file number until we have a unique file to save in $dir. Use 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; + $filename = str_replace( "$number$ext", "$new_number$ext", $filename ); + $filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 ); + $number = $new_number; + } + return $filename2; + } - // Add a value to the current pid/key: - $post_meta_cache[$mpid][$mkey][] = $mval; + while ( file_exists( $dir . "/$filename" ) ) { + if ( '' == "$number$ext" ) + $filename = $filename . ++$number . $ext; + else + $filename = str_replace( "$number$ext", ++$number . $ext, $filename ); } } -} -function update_category_cache() { - return true; -} + return $filename; +} + +/** + * 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 + * @param null $deprecated Never used. Set to null. + * @param mixed $bits File content + * @param string $time Optional. Time formatted in 'yyyy/mm'. + * @return array + */ +function wp_upload_bits( $name, $deprecated, $bits, $time = null ) { + if ( !empty( $deprecated ) ) + _deprecated_argument( __FUNCTION__, '2.0' ); + + if ( empty( $name ) ) + return array( 'error' => __( 'Empty filename' ) ); + + $wp_filetype = wp_check_filetype( $name ); + if ( !$wp_filetype['ext'] ) + return array( 'error' => __( 'Invalid file type' ) ); + + $upload = wp_upload_dir( $time ); + + if ( $upload['error'] !== false ) + return $upload; + + $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; + } -function wp_head() { - do_action('wp_head'); -} + $filename = wp_unique_filename( $upload['path'], $name ); -function wp_footer() { - do_action('wp_footer'); -} + $new_file = $upload['path'] . "/$filename"; + if ( ! wp_mkdir_p( dirname( $new_file ) ) ) { + $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) ); + return array( 'error' => $message ); + } -function is_single ($post = '') { - global $wp_query; + $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"; + + return array( 'file' => $new_file, 'url' => $url, 'error' => false ); +} + +/** + * Retrieve the file type based on the extension name. + * + * @package WordPress + * @since 2.5.0 + * @uses apply_filters() Calls 'ext2type' hook on default supported types. + * + * @param string $ext The extension to search. + * @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found. + */ +function wp_ext2type( $ext ) { + $ext2type = apply_filters( 'ext2type', array( + 'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ), + 'video' => array( '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', 'rtf', 'wp', 'wpd' ), + 'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsb', 'xlsm' ), + 'interactive' => array( 'key', 'ppt', 'pptx', 'pptm', 'odp', 'swf' ), + 'text' => array( 'asc', 'csv', 'tsv', 'txt' ), + 'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip' ), + 'code' => array( 'css', 'htm', 'html', 'php', 'js' ), + )); + foreach ( $ext2type as $type => $exts ) + if ( in_array( $ext, $exts ) ) + return $type; +} + +/** + * Retrieve the file type from the file name. + * + * You can optionally define the mime array, if needed. + * + * @since 2.0.4 + * + * @param string $filename File name or path. + * @param array $mimes Optional. Key is the file extension with value as the mime type. + * @return array Values with extension first and mime type. + */ +function wp_check_filetype( $filename, $mimes = null ) { + if ( empty($mimes) ) + $mimes = get_allowed_mime_types(); + $type = false; + $ext = false; + + foreach ( $mimes as $ext_preg => $mime_match ) { + $ext_preg = '!\.(' . $ext_preg . ')$!i'; + if ( preg_match( $ext_preg, $filename, $ext_matches ) ) { + $type = $mime_match; + $ext = $ext_matches[1]; + break; + } + } - if ( !$wp_query->is_single ) - return false; + 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 validating images known to getimagesize(). + * + * @since 3.0.0 + * + * @param string $file Full path to the image. + * @param string $filename The filename of the image (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 ); + extract( $wp_filetype ); + + // We can't do any further validation without a file to work with + if ( ! file_exists( $file ) ) + return compact( 'ext', 'type', 'proper_filename' ); + + // We're able to validate images using GD + if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) { + + // Attempt to figure out what type of image it actually is + $imgstats = @getimagesize( $file ); + + // If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME + if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) { + // This is a simplified array of MIMEs that getimagesize() can detect and their extensions + // You shouldn't need to use this filter, but it's here just in case + $mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array( + 'image/jpeg' => 'jpg', + 'image/png' => 'png', + 'image/gif' => 'gif', + 'image/bmp' => 'bmp', + 'image/tiff' => 'tif', + ) ); + + // Replace whatever is after the last period in the filename with the correct extension + if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) { + $filename_parts = explode( '.', $filename ); + array_pop( $filename_parts ); + $filename_parts[] = $mime_to_ext[ $imgstats['mime'] ]; + $new_filename = implode( '.', $filename_parts ); + + if ( $new_filename != $filename ) + $proper_filename = $new_filename; // Mark that it changed + + // Redefine the extension / MIME + $wp_filetype = wp_check_filetype( $new_filename, $mimes ); + extract( $wp_filetype ); + } + } + } - if ( empty( $post) ) - return true; + // Let plugins try and validate other types of files + // Should return an array in the style of array( 'ext' => $ext, 'type' => $type, 'proper_filename' => $proper_filename ) + return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes ); +} + +/** + * Retrieve list of allowed mime types and file extensions. + * + * @since 2.8.6 + * + * @return array Array of mime types keyed by the file extension regex corresponding to those types. + */ +function get_allowed_mime_types() { + static $mimes = false; + + if ( !$mimes ) { + // Accepted MIME types are set here as PCRE unless provided. + $mimes = apply_filters( 'upload_mimes', array( + 'jpg|jpeg|jpe' => 'image/jpeg', + 'gif' => 'image/gif', + 'png' => 'image/png', + 'bmp' => 'image/bmp', + 'tif|tiff' => 'image/tiff', + 'ico' => 'image/x-icon', + 'asf|asx|wax|wmv|wmx' => 'video/asf', + 'avi' => 'video/avi', + 'divx' => 'video/divx', + 'flv' => 'video/x-flv', + 'mov|qt' => 'video/quicktime', + 'mpeg|mpg|mpe' => 'video/mpeg', + 'txt|asc|c|cc|h' => 'text/plain', + 'csv' => 'text/csv', + 'tsv' => 'text/tab-separated-values', + 'rtx' => 'text/richtext', + 'css' => 'text/css', + 'htm|html' => 'text/html', + 'mp3|m4a|m4b' => 'audio/mpeg', + 'mp4|m4v' => 'video/mp4', + 'ra|ram' => 'audio/x-realaudio', + 'wav' => 'audio/wav', + 'ogg|oga' => 'audio/ogg', + 'ogv' => 'video/ogg', + 'mid|midi' => 'audio/midi', + 'wma' => 'audio/wma', + 'mka' => 'audio/x-matroska', + 'mkv' => 'video/x-matroska', + 'rtf' => 'application/rtf', + 'js' => 'application/javascript', + 'pdf' => 'application/pdf', + 'doc|docx' => 'application/msword', + 'pot|pps|ppt|pptx|ppam|pptm|sldm|ppsm|potm' => 'application/vnd.ms-powerpoint', + 'wri' => 'application/vnd.ms-write', + 'xla|xls|xlsx|xlt|xlw|xlam|xlsb|xlsm|xltm' => 'application/vnd.ms-excel', + 'mdb' => 'application/vnd.ms-access', + 'mpp' => 'application/vnd.ms-project', + 'docm|dotm' => 'application/vnd.ms-word', + 'pptx|sldx|ppsx|potx' => 'application/vnd.openxmlformats-officedocument.presentationml', + 'xlsx|xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml', + 'docx|dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml', + 'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote', + 'swf' => 'application/x-shockwave-flash', + 'class' => 'application/java', + 'tar' => 'application/x-tar', + 'zip' => 'application/zip', + 'gz|gzip' => 'application/x-gzip', + 'exe' => 'application/x-msdownload', + // openoffice formats + 'odt' => 'application/vnd.oasis.opendocument.text', + 'odp' => 'application/vnd.oasis.opendocument.presentation', + 'ods' => 'application/vnd.oasis.opendocument.spreadsheet', + 'odg' => 'application/vnd.oasis.opendocument.graphics', + 'odc' => 'application/vnd.oasis.opendocument.chart', + 'odb' => 'application/vnd.oasis.opendocument.database', + 'odf' => 'application/vnd.oasis.opendocument.formula', + // wordperfect formats + 'wp|wpd' => 'application/wordperfect', + ) ); + } - $post_obj = $wp_query->get_queried_object(); + return $mimes; +} + +/** + * Retrieve nonce action "Are you sure" message. + * + * The action is split by verb and noun. The action format is as follows: + * verb-action_extra. The verb is before the first dash and has the format of + * letters and no spaces and numbers. The noun is after the dash and before the + * underscore, if an underscore exists. The noun is also only letters. + * + * The filter will be called for any action, which is not defined by WordPress. + * You may use the filter for your plugin to explain nonce actions to the user, + * when they get the "Are you sure?" message. The filter is in the format of + * 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the + * $noun replaced by the found noun. The two parameters that are given to the + * hook are the localized "Are you sure you want to do this?" message with the + * extra text (the text after the underscore). + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @param string $action Nonce action. + * @return string Are you sure message. + */ +function wp_explain_nonce( $action ) { + if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) { + $verb = $matches[1]; + $noun = $matches[2]; - if ( $post == $post_obj->ID ) - return true; - elseif ( $post == $post_obj->post_title ) - return true; - elseif ( $post == $post_obj->post_name ) - return true; + $trans = array(); + $trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: “%s” has failed.' ), 'get_the_title' ); + + $trans['add']['category'] = array( __( 'Your attempt to add this category has failed.' ), false ); + $trans['delete']['category'] = array( __( 'Your attempt to delete this category: “%s” has failed.' ), 'get_cat_name' ); + $trans['update']['category'] = array( __( 'Your attempt to edit this category: “%s” has failed.' ), 'get_cat_name' ); + + $trans['delete']['comment'] = array( __( 'Your attempt to delete this comment: “%s” has failed.' ), 'use_id' ); + $trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: “%s” has failed.' ), 'use_id' ); + $trans['approve']['comment'] = array( __( 'Your attempt to approve this comment: “%s” has failed.' ), 'use_id' ); + $trans['update']['comment'] = array( __( 'Your attempt to edit this comment: “%s” has failed.' ), 'use_id' ); + $trans['bulk']['comments'] = array( __( 'Your attempt to bulk modify comments has failed.' ), false ); + $trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false ); + + $trans['add']['bookmark'] = array( __( 'Your attempt to add this link has failed.' ), false ); + $trans['delete']['bookmark'] = array( __( 'Your attempt to delete this link: “%s” has failed.' ), 'use_id' ); + $trans['update']['bookmark'] = array( __( 'Your attempt to edit this link: “%s” has failed.' ), 'use_id' ); + $trans['bulk']['bookmarks'] = array( __( 'Your attempt to bulk modify links has failed.' ), false ); + + $trans['add']['page'] = array( __( 'Your attempt to add this page has failed.' ), false ); + $trans['delete']['page'] = array( __( 'Your attempt to delete this page: “%s” has failed.' ), 'get_the_title' ); + $trans['update']['page'] = array( __( 'Your attempt to edit this page: “%s” has failed.' ), 'get_the_title' ); + + $trans['edit']['plugin'] = array( __( 'Your attempt to edit this plugin file: “%s” has failed.' ), 'use_id' ); + $trans['activate']['plugin'] = array( __( 'Your attempt to activate this plugin: “%s” has failed.' ), 'use_id' ); + $trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: “%s” has failed.' ), 'use_id' ); + $trans['upgrade']['plugin'] = array( __( 'Your attempt to update this plugin: “%s” has failed.' ), 'use_id' ); + + $trans['add']['post'] = array( __( 'Your attempt to add this post has failed.' ), false ); + $trans['delete']['post'] = array( __( 'Your attempt to delete this post: “%s” has failed.' ), 'get_the_title' ); + $trans['update']['post'] = array( __( 'Your attempt to edit this post: “%s” has failed.' ), 'get_the_title' ); + + $trans['add']['user'] = array( __( 'Your attempt to add this user has failed.' ), false ); + $trans['delete']['users'] = array( __( 'Your attempt to delete users has failed.' ), false ); + $trans['bulk']['users'] = array( __( 'Your attempt to bulk modify users has failed.' ), false ); + $trans['update']['user'] = array( __( 'Your attempt to edit this user: “%s” has failed.' ), 'get_the_author_meta', 'display_name' ); + $trans['update']['profile'] = array( __( 'Your attempt to modify the profile for: “%s” has failed.' ), 'get_the_author_meta', 'display_name' ); + + $trans['update']['options'] = array( __( 'Your attempt to edit your settings has failed.' ), false ); + $trans['update']['permalink'] = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' ); + $trans['edit']['file'] = array( __( 'Your attempt to edit this file: “%s” has failed.' ), 'use_id' ); + $trans['edit']['theme'] = array( __( 'Your attempt to edit this theme file: “%s” has failed.' ), 'use_id' ); + $trans['switch']['theme'] = array( __( 'Your attempt to switch to this theme: “%s” has failed.' ), 'use_id' ); + + $trans['log']['out'] = array( sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'sitename' ) ), false ); + + if ( isset( $trans[$verb][$noun] ) ) { + if ( !empty( $trans[$verb][$noun][1] ) ) { + $lookup = $trans[$verb][$noun][1]; + if ( isset($trans[$verb][$noun][2]) ) + $lookup_value = $trans[$verb][$noun][2]; + $object = $matches[4]; + if ( 'use_id' != $lookup ) { + if ( isset( $lookup_value ) ) + $object = call_user_func( $lookup, $lookup_value, $object ); + else + $object = call_user_func( $lookup, $object ); + } + return sprintf( $trans[$verb][$noun][0], esc_html($object) ); + } else { + return $trans[$verb][$noun][0]; + } + } - return false; + return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), isset($matches[4]) ? $matches[4] : '' ); + } else { + return apply_filters( 'explain_nonce_' . $action, __( 'Are you sure you want to do this?' ) ); + } } -function is_page ($page = '') { - global $wp_query; - - if ( !$wp_query->is_page ) - return false; +/** + * Display "Are You Sure" message to confirm the action being taken. + * + * If the action has the nonce explain message, then it will be displayed along + * with the "Are you sure?" message. + * + * @package WordPress + * @subpackage Security + * @since 2.0.4 + * + * @param string $action The nonce action. + */ +function wp_nonce_ays( $action ) { + $title = __( 'WordPress Failure Notice' ); + $html = esc_html( wp_explain_nonce( $action ) ); + if ( 'log-out' == $action ) + $html .= "</p><p>" . sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() ); + elseif ( wp_get_referer() ) + $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>"; + + wp_die( $html, $title, array('response' => 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 siliently. + * + * @since 2.0.4 + * + * @param string $message Error message. + * @param string $title Error title. + * @param string|array $args Optional arguements to control behaviour. + */ +function wp_die( $message, $title = '', $args = array() ) { + if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) + die('-1'); + + if ( function_exists( 'apply_filters' ) ) { + $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler'); + } else { + $function = '_default_wp_die_handler'; + } - if ( empty($page) ) - return true; + call_user_func( $function, $message, $title, $args ); +} + +/** + * Kill 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 wp_die_handler filter in wp_die + * + * @since 3.0.0 + * @access private + * + * @param string $message Error message. + * @param string $title Error title. + * @param string|array $args Optional arguements to control behaviour. + */ +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; + endswitch; + } elseif ( is_string( $message ) ) { + $message = "<p>$message</p>"; + } - $page_obj = $wp_query->get_queried_object(); + if ( isset( $r['back_link'] ) && $r['back_link'] ) { + $back_text = $have_gettext? __('« Back') : '« Back'; + $message .= "\n<p><a href='javascript:history.back()'>$back_text</p>"; + } - if ( $page == $page_obj->ID ) - return true; - elseif ( $page == $page_obj->post_title ) - return true; - else if ( $page == $page_obj->post_name ) - return true; + if ( defined( 'WP_SITEURL' ) && '' != WP_SITEURL ) + $admin_dir = WP_SITEURL . '/wp-admin/'; + elseif ( function_exists( 'get_bloginfo' ) && '' != get_bloginfo( 'wpurl' ) ) + $admin_dir = get_bloginfo( 'wpurl' ) . '/wp-admin/'; + elseif ( strpos( $_SERVER['PHP_SELF'], 'wp-admin' ) !== false ) + $admin_dir = ''; + else + $admin_dir = 'wp-admin/'; - return false; -} + if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) : + if ( !headers_sent() ) { + status_header( $r['response'] ); + nocache_headers(); + header( 'Content-Type: text/html; charset=utf-8' ); + } -function is_attachment () { - global $wp_query; + if ( empty($title) ) + $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error'; - return $wp_query->is_attachment; + $text_direction = 'ltr'; + if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] ) + $text_direction = 'rtl'; + elseif ( function_exists( 'is_rtl' ) && is_rtl() ) + $text_direction = 'rtl'; +?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono --> +<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>> +<head> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> + <title><?php echo $title ?> + + + + + + + + + + +is_preview; -} +/** + * Retrieve the WordPress home page URL. + * + * If the constant named 'WP_HOME' exists, then it willl be used and returned by + * the function. This can be used to counter the redirection on your local + * development environment. + * + * @access private + * @package WordPress + * @since 2.2.0 + * + * @param string $url URL for the home location + * @return string Homepage location. + */ +function _config_wp_home( $url = '' ) { + if ( defined( 'WP_HOME' ) ) + return 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. + * + * @access private + * @package WordPress + * @since 2.2.0 + * + * @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 WP_SITEURL; + return $url; +} + +/** + * 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', 'plugins', and 'theme_advanced_button1' array + * keys. These keys are then returned in the $input array. + * + * @access private + * @package WordPress + * @subpackage MCE + * @since 2.1.0 + * + * @param array $input MCE plugin array. + * @return array Direction set for 'rtl', if needed by locale. + */ +function _mce_set_direction( $input ) { + if ( is_rtl() ) { + $input['directionality'] = 'rtl'; + $input['plugins'] .= ',directionality'; + $input['theme_advanced_buttons1'] .= ',ltr'; + } -function is_archive () { - global $wp_query; + return $input; +} + + +/** + * 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; - return $wp_query->is_archive; -} + if ( !isset( $wpsmiliestrans ) ) { + $wpsmiliestrans = array( + ':mrgreen:' => 'icon_mrgreen.gif', + ':neutral:' => 'icon_neutral.gif', + ':twisted:' => 'icon_twisted.gif', + ':arrow:' => 'icon_arrow.gif', + ':shock:' => 'icon_eek.gif', + ':smile:' => 'icon_smile.gif', + ':???:' => 'icon_confused.gif', + ':cool:' => 'icon_cool.gif', + ':evil:' => 'icon_evil.gif', + ':grin:' => 'icon_biggrin.gif', + ':idea:' => 'icon_idea.gif', + ':oops:' => 'icon_redface.gif', + ':razz:' => 'icon_razz.gif', + ':roll:' => 'icon_rolleyes.gif', + ':wink:' => 'icon_wink.gif', + ':cry:' => 'icon_cry.gif', + ':eek:' => 'icon_surprised.gif', + ':lol:' => 'icon_lol.gif', + ':mad:' => 'icon_mad.gif', + ':sad:' => 'icon_sad.gif', + '8-)' => 'icon_cool.gif', + '8-O' => 'icon_eek.gif', + ':-(' => 'icon_sad.gif', + ':-)' => 'icon_smile.gif', + ':-?' => 'icon_confused.gif', + ':-D' => 'icon_biggrin.gif', + ':-P' => 'icon_razz.gif', + ':-o' => 'icon_surprised.gif', + ':-x' => 'icon_mad.gif', + ':-|' => 'icon_neutral.gif', + ';-)' => 'icon_wink.gif', + '8)' => 'icon_cool.gif', + '8O' => 'icon_eek.gif', + ':(' => 'icon_sad.gif', + ':)' => 'icon_smile.gif', + ':?' => 'icon_confused.gif', + ':D' => 'icon_biggrin.gif', + ':P' => 'icon_razz.gif', + ':o' => 'icon_surprised.gif', + ':x' => 'icon_mad.gif', + ':|' => 'icon_neutral.gif', + ';)' => 'icon_wink.gif', + ':!:' => 'icon_exclaim.gif', + ':?:' => 'icon_question.gif', + ); + } -function is_date () { - global $wp_query; + if (count($wpsmiliestrans) == 0) { + return; + } - return $wp_query->is_date; -} + /* + * NOTE: we sort the smilies in reverse key order. This is to make sure + * we match the longest possible smilie (:???: vs :?) as the regular + * expression used below is first-match + */ + krsort($wpsmiliestrans); -function is_year () { - global $wp_query; + $wp_smiliessearch = '/(?:\s|^)'; - return $wp_query->is_year; -} + $subchar = ''; + foreach ( (array) $wpsmiliestrans as $smiley => $img ) { + $firstchar = substr($smiley, 0, 1); + $rest = substr($smiley, 1); -function is_month () { - global $wp_query; + // new subpattern? + if ($firstchar != $subchar) { + if ($subchar != '') { + $wp_smiliessearch .= ')|(?:\s|^)'; + } + $subchar = $firstchar; + $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:'; + } else { + $wp_smiliessearch .= '|'; + } + $wp_smiliessearch .= preg_quote($rest, '/'); + } - return $wp_query->is_month; -} + $wp_smiliessearch .= ')(?:\s|$)/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 + * + * @param string|array $args Value to merge with $defaults + * @param array $defaults Array that serves as the defaults. + * @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 ); + + if ( is_array( $defaults ) ) + return array_merge( $defaults, $r ); + return $r; +} + +/** + * Clean up an array, comma- or space-separated list of IDs + * + * @since 3.0.0 + * + * @param array|string $list + * @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)); +} + +/** + * 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; +} + +/** + * Filters a list of objects, based on a set of key => value arguments + * + * @since 3.0.0 + * + * @param array $list An array of objects to filter + * @param array $args An array of key => value arguments to match against each object + * @param string $operator The logical operation to perform. 'or' means only one element + * from the array needs to match; 'and' means all elements must match. The default is 'and'. + * @param bool|string $field A field from the object to place instead of the entire object + * @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(); + + $list = wp_list_filter( $list, $args, $operator ); + + if ( $field ) + $list = wp_list_pluck( $list, $field ); + + return $list; +} + +/** + * Filters a list of objects, based on a set of key => value arguments + * + * @since 3.1.0 + * + * @param array $list An array of objects to filter + * @param array $args An array of key => value arguments to match against each object + * @param string $operator 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. + * The default is 'AND'. + * @return array + */ +function wp_list_filter( $list, $args = array(), $operator = 'AND' ) { + if ( ! is_array( $list ) ) + return array(); + + if ( empty( $args ) ) + return $list; + + $operator = strtoupper( $operator ); + $count = count( $args ); + $filtered = array(); + + foreach ( $list as $key => $obj ) { + $matched = count( array_intersect_assoc( (array) $obj, $args ) ); + if ( ( 'AND' == $operator && $matched == $count ) + || ( 'OR' == $operator && $matched <= $count ) + || ( 'NOT' == $operator && 0 == $matched ) ) { + $filtered[$key] = $obj; + } + } -function is_day () { - global $wp_query; + return $filtered; +} + +/** + * Pluck a certain field out of each object in a list + * + * @since 3.1.0 + * + * @param array $list A list of objects or arrays + * @param int|string $field A field from the object to place instead of the entire object + * @return array + */ +function wp_list_pluck( $list, $field ) { + foreach ( $list as $key => $value ) { + $value = (array) $value; + $list[ $key ] = $value[ $field ]; + } - return $wp_query->is_day; + return $list; } -function is_time () { - global $wp_query; +/** + * Determines if default embed handlers should be loaded. + * + * Checks to make sure that the embeds library hasn't already been loaded. If + * it hasn't, then it will load the embeds library. + * + * @since 2.9.0 + */ +function wp_maybe_load_embeds() { + if ( ! apply_filters('load_default_embeds', true) ) + return; + require_once( ABSPATH . WPINC . '/default-embeds.php' ); +} + +/** + * 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 + * @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value. + */ +function wp_maybe_load_widgets() { + if ( ! apply_filters('load_default_widgets', true) ) + return; + require_once( ABSPATH . WPINC . '/default-widgets.php' ); + add_action( '_admin_menu', 'wp_widgets_add_menu' ); +} + +/** + * Append the Widgets menu to the themes main menu. + * + * @since 2.2.0 + * @uses $submenu The administration submenu list. + */ +function wp_widgets_add_menu() { + global $submenu; + $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 our 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 the the WordPress 2.3.2, but originally was + * added in WordPress 2.5.0. + * + * @since 2.3.2 + * @uses $wpdb + */ +function dead_db() { + global $wpdb; - return $wp_query->is_time; -} + // Load custom DB error template, if present. + if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) { + require_once( WP_CONTENT_DIR . '/db-error.php' ); + die(); + } -function is_author ($author = '') { - global $wp_query; + // If installing or in the admin, provide the verbose message. + if ( defined('WP_INSTALLING') || defined('WP_ADMIN') ) + wp_die($wpdb->error); - 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; + // Otherwise, be terse. + status_header( 500 ); + nocache_headers(); + header( 'Content-Type: text/html; charset=utf-8' ); +?> + +> + + + Database Error - return false; + + +

Error establishing a database connection

+ + +is_category ) - 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; - +/** + * Converts value to nonnegative integer. + * + * @since 2.5.0 + * + * @param mixed $maybeint Data you wish to have convered to an nonnegative integer + * @return int An nonnegative integer + */ +function absint( $maybeint ) { + return abs( intval( $maybeint ) ); +} + +/** + * Determines if the blog can be accessed over SSL. + * + * Determines if blog can be accessed over SSL by using cURL to access the site + * using the https in the siteurl. Requires cURL extension to work correctly. + * + * @since 2.5.0 + * + * @param string $url + * @return bool Whether SSL access is available + */ +function url_is_accessable_via_ssl($url) +{ + if (in_array('curl', get_loaded_extensions())) { + $ssl = preg_replace( '/^http:\/\//', 'https://', $url ); + + $ch = curl_init(); + curl_setopt($ch, CURLOPT_URL, $ssl); + curl_setopt($ch, CURLOPT_FAILONERROR, true); + curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); + curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); + curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); + + curl_exec($ch); + + $status = curl_getinfo($ch, CURLINFO_HTTP_CODE); + curl_close ($ch); + + if ($status == 200 || $status == 401) { + 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; +/** + * Secure URL, if available or the given URL. + * + * @since 2.5.0 + * + * @param string $url Complete URL path with transport. + * @return string Secure or regular URL path. + */ +function atom_service_url_filter($url) +{ + if ( url_is_accessable_via_ssl($url) ) + return preg_replace( '/^http:\/\//', 'https://', $url ); + else + return $url; +} + +/** + * Marks a function as deprecated and informs when it has been used. + * + * There is a hook deprecated_function_run that will be called that can be used + * to get the backtrace up to what file and function called the deprecated + * function. + * + * 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. + * + * @package WordPress + * @subpackage Debug + * @since 2.5.0 + * @access private + * + * @uses do_action() Calls 'deprecated_function_run' and passes the function name, what to use instead, + * and the version the function was deprecated in. + * @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do + * trigger or false to not trigger error. + * + * @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 + */ +function _deprecated_function( $function, $version, $replacement=null ) { + + do_action( 'deprecated_function_run', $function, $replacement, $version ); + + // Allow plugin to filter the output error trigger + if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) { + if ( ! is_null($replacement) ) + trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) ); + else + trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $function, $version ) ); + } } -function is_trackback () { - global $wp_query; - - return $wp_query->is_trackback; +/** + * Marks a file as deprecated and informs when it has been used. + * + * There is a hook deprecated_file_included that will be called that can be used + * to get the backtrace up to what file and function included the deprecated + * file. + * + * 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. + * + * @package WordPress + * @subpackage Debug + * @since 2.5.0 + * @access private + * + * @uses do_action() Calls 'deprecated_file_included' and passes the file name, what to use instead, + * the version in which the file was deprecated, and any message regarding the change. + * @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do + * trigger or false to not trigger error. + * + * @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 + * @param string $message Optional. A message regarding the change + */ +function _deprecated_file( $file, $version, $replacement = null, $message = '' ) { + + do_action( 'deprecated_file_included', $file, $replacement, $version, $message ); + + // Allow plugin to filter the output error trigger + if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) { + $message = empty( $message ) ? '' : ' ' . $message; + 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 ); + } } - -function is_admin () { - global $wp_query; - - return ( $wp_query->is_admin || strstr($_SERVER['REQUEST_URI'], 'wp-admin/') ); +/** + * Marks a function argument as deprecated and informs when it has been used. + * + * This function is to be used whenever a deprecated function argument is used. + * Before this function is called, the argument must be checked for whether it was + * used by comparing it to its default value or evaluating whether it is empty. + * For example: + * + * if ( !empty($deprecated) ) + * _deprecated_argument( __FUNCTION__, '3.0' ); + * + * + * There is a hook deprecated_argument_run that will be called that can be used + * to get the backtrace up to what file and function used the deprecated + * argument. + * + * The current behavior is to trigger a user error if WP_DEBUG is true. + * + * @package WordPress + * @subpackage Debug + * @since 3.0.0 + * @access private + * + * @uses do_action() Calls 'deprecated_argument_run' and passes the function name, a message on the change, + * and the version in which the argument was deprecated. + * @uses apply_filters() Calls 'deprecated_argument_trigger_error' and expects boolean value of true to do + * trigger or false to not trigger error. + * + * @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. + */ +function _deprecated_argument( $function, $version, $message = null ) { + + do_action( 'deprecated_argument_run', $function, $message, $version ); + + // Allow plugin to filter the output error trigger + if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) { + 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 ) ); + } } -function is_home () { - global $wp_query; - - return $wp_query->is_home; +/** + * Marks something as being incorrectly called. + * + * There is a hook doing_it_wrong_run that will be called that can be used + * to get the backtrace up to what file and function called the deprecated + * function. + * + * The current behavior is to trigger a user error if WP_DEBUG is true. + * + * @package WordPress + * @subpackage Debug + * @since 3.1.0 + * @access private + * + * @uses do_action() Calls 'doing_it_wrong_run' and passes the function arguments. + * @uses apply_filters() Calls 'doing_it_wrong_trigger_error' and expects boolean value of true to do + * trigger or false to not trigger error. + * + * @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 ) { + + do_action( 'doing_it_wrong_run', $function, $message, $version ); + + // Allow plugin to filter the output error trigger + if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) { + $version = is_null( $version ) ? '' : sprintf( __( '(This message was added in version %s.)' ), $version ); + trigger_error( sprintf( __( '%1$s was called incorrectly. %2$s %3$s' ), $function, $message, $version ) ); + } } -function is_404 () { - global $wp_query; - - return $wp_query->is_404; -} +/** + * 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 + * + * @param string $mod e.g. mod_rewrite + * @param bool $default The default return value if the module is not found + * @return bool + */ +function apache_mod_loaded($mod, $default = false) { + global $is_apache; + + if ( !$is_apache ) + return false; -function is_comments_popup () { - global $wp_query; + if ( function_exists('apache_get_modules') ) { + $mods = apache_get_modules(); + if ( in_array($mod, $mods) ) + return true; + } elseif ( function_exists('phpinfo') ) { + ob_start(); + phpinfo(8); + $phpinfo = ob_get_clean(); + if ( false !== strpos($phpinfo, $mod) ) + return true; + } + return $default; +} + +/** + * Check if IIS 7 supports pretty permalinks + * + * @since 2.8.0 + * + * @return bool + */ +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, + * which is the case for PHP 4.X, then we cannot easily update the xml configuration file, + * hence we just bail out and tell user that pretty permalinks cannot be used. + * This is not a big issue because PHP 4.X is going to be depricated and for IIS it + * is recommended to use PHP 5.X NTS. + * 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. + */ + $supports_permalinks = class_exists('DOMDocument') && isset($_SERVER['IIS_UrlRewriteModule']) && ( php_sapi_name() == 'cgi-fcgi' ); + } - return $wp_query->is_comments_popup; + return apply_filters('iis7_supports_permalinks', $supports_permalinks); } -function is_paged () { - global $wp_query; +/** + * 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; - return $wp_query->is_paged; -} + if ( false !== strpos( $file, './' )) + return 1; -function in_the_loop() { - global $wp_query; + if (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) ) + return 3; - return $wp_query->in_the_loop; -} - -function get_query_var($var) { - global $wp_query; + if (':' == substr( $file, 1, 1 )) + return 2; - return $wp_query->get($var); + return 0; } -function have_posts() { - global $wp_query; - - return $wp_query->have_posts(); +/** + * Determine if SSL is used. + * + * @since 2.6.0 + * + * @return bool True if SSL, false if not used. + */ +function is_ssl() { + if ( isset($_SERVER['HTTPS']) ) { + if ( 'on' == strtolower($_SERVER['HTTPS']) ) + return true; + if ( '1' == $_SERVER['HTTPS'] ) + return true; + } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) { + return true; + } + return false; } -function rewind_posts() { - global $wp_query; +/** + * Whether SSL login should be forced. + * + * @since 2.6.0 + * + * @param string|bool $force Optional. + * @return bool True if forced, false if not forced. + */ +function force_ssl_login( $force = null ) { + static $forced = false; + + if ( !is_null( $force ) ) { + $old_forced = $forced; + $forced = $force; + return $old_forced; + } - return $wp_query->rewind_posts(); + return $forced; } -function the_post() { - global $wp_query; +/** + * Whether to force SSL used for the Administration Panels. + * + * @since 2.6.0 + * + * @param string|bool $force + * @return bool True if forced, false if not forced. + */ +function force_ssl_admin( $force = null ) { + static $forced = false; - $wp_query->the_post(); -} + if ( !is_null( $force ) ) { + $old_forced = $forced; + $forced = $force; + return $old_forced; + } -function get_theme_root() { - return apply_filters('theme_root', ABSPATH . "wp-content/themes"); -} + 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 + */ +function wp_guess_url() { + if ( defined('WP_SITEURL') && '' != WP_SITEURL ) { + $url = WP_SITEURL; + } else { + $schema = is_ssl() ? 'https://' : 'http://'; + $url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']); + } + return rtrim($url, '/'); +} + +/** + * 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 + * + * @param bool $suspend Whether to suspend or enable cache invalidation + * @return bool The current suspend setting + */ +function wp_suspend_cache_invalidation($suspend = true) { + global $_wp_suspend_cache_invalidation; + + $current_suspend = $_wp_suspend_cache_invalidation; + $_wp_suspend_cache_invalidation = $suspend; + return $current_suspend; +} + +/** + * Retrieve site option value based on name of option. + * + * @see get_option() + * @package WordPress + * @subpackage Option + * @since 2.8.0 + * + * @uses apply_filters() Calls 'pre_site_option_$option' before checking the option. + * Any value other than false will "short-circuit" the retrieval of the option + * and return the returned value. + * @uses apply_filters() Calls 'site_option_$option', after checking the option, with + * the option value. + * + * @param string $option Name of option to retrieve. Expected to not be SQL-escaped. + * @param mixed $default Optional value to return if option doesn't exist. Default false. + * @param bool $use_cache Whether to use cache. Multisite only. Default true. + * @return mixed Value set for the option. + */ +function get_site_option( $option, $default = false, $use_cache = true ) { + global $wpdb; -function get_theme_root_uri() { - return apply_filters('theme_root_uri', get_settings('siteurl') . "/wp-content/themes", get_settings('siteurl')); -} + // Allow plugins to short-circuit site options. + $pre = apply_filters( 'pre_site_option_' . $option, false ); + if ( false !== $pre ) + return $pre; -function get_stylesheet() { - return apply_filters('stylesheet', get_settings('stylesheet')); -} + if ( !is_multisite() ) { + $value = get_option($option, $default); + } else { + $cache_key = "{$wpdb->siteid}:$option"; + if ( $use_cache ) + $value = wp_cache_get($cache_key, 'site-options'); -function get_stylesheet_directory() { - $stylesheet = get_stylesheet(); - $stylesheet_dir = get_theme_root() . "/$stylesheet"; - return apply_filters('stylesheet_directory', $stylesheet_dir, $stylesheet); -} + if ( !isset($value) || (false === $value) ) { + $row = $wpdb->get_row( $wpdb->prepare("SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); -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); -} + // Has to be get_row instead of get_var because of funkiness with 0, false, null values + if ( is_object( $row ) ) + $value = $row->meta_value; + else + $value = $default; -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); -} + $value = maybe_unserialize( $value ); -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'); + wp_cache_set( $cache_key, $value, 'site-options' ); + } } - 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); -} + return apply_filters( 'site_option_' . $option, $value ); +} + +/** + * Add a new site option. + * + * @see add_option() + * @package WordPress + * @subpackage Option + * @since 2.8.0 + * + * @uses apply_filters() Calls 'pre_add_site_option_$option' hook to allow overwriting the + * option value to be stored. + * @uses do_action() Calls 'add_site_option_$option' and 'add_site_option' hooks on success. + * + * @param string $option Name of option to add. Expected to not be SQL-escaped. + * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped. + * @return bool False if option was not added and true if option was added. + */ +function add_site_option( $option, $value ) { + global $wpdb; -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); -} + $value = apply_filters( 'pre_add_site_option_' . $option, $value ); -function get_theme_data($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'; + if ( !is_multisite() ) { + $result = add_option( $option, $value ); + } else { + $cache_key = "{$wpdb->siteid}:$option"; - $description = wptexturize(trim($description[1])); + if ( $wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ) ) + return update_site_option( $option, $value ); - $name = $theme_name[1]; - $name = trim($name); - $theme = $name; + $value = sanitize_option( $option, $value ); + wp_cache_set( $cache_key, $value, 'site-options' ); - if ( '' == $author_uri[1] ) { - $author = trim($author_name[1]); - } else { - $author = '' . trim($author_name[1]) . ''; + $_value = $value; + $value = maybe_serialize($value); + $result = $wpdb->insert( $wpdb->sitemeta, array('site_id' => $wpdb->siteid, 'meta_key' => $option, 'meta_value' => $value ) ); + $value = $_value; } - return array('Name' => $name, 'Title' => $theme, 'Description' => $description, 'Author' => $author, 'Version' => $version, 'Template' => $template[1], 'Status' => $status); -} + do_action( "add_site_option_{$option}", $option, $value ); + do_action( "add_site_option", $option, $value ); + + return $result; +} + +/** + * Removes site option by name. + * + * @see delete_option() + * @package WordPress + * @subpackage Option + * @since 2.8.0 + * + * @uses do_action() Calls 'pre_delete_site_option_$option' hook before option is deleted. + * @uses do_action() Calls 'delete_site_option' and 'delete_site_option_$option' + * hooks on success. + * + * @param string $option Name of option to remove. Expected to not be SQL-escaped. + * @return bool True, if succeed. False, if failure. + */ +function delete_site_option( $option ) { + global $wpdb; -function get_themes() { - global $wp_themes; - global $wp_broken_themes; + // ms_protect_special_option( $option ); @todo - if ( isset($wp_themes) ) - return $wp_themes; + do_action( 'pre_delete_site_option_' . $option ); - $themes = array(); - $wp_broken_themes = array(); - $theme_root = get_theme_root(); - $theme_loc = str_replace(ABSPATH, '', $theme_root); + if ( !is_multisite() ) { + $result = delete_option( $option ); + } else { + $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); + if ( is_null( $row ) || !$row->meta_id ) + return false; + $cache_key = "{$wpdb->siteid}:$option"; + wp_cache_delete( $cache_key, 'site-options' ); - // Files in wp-content/themes directory - $themes_dir = @ dir($theme_root); - if ( $themes_dir ) { - while(($theme_dir = $themes_dir->read()) !== false) { - if ( is_dir($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.')); - } - } - } + $result = $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ); } - if ( !$themes_dir || !$theme_files ) { - return $themes; + if ( $result ) { + do_action( "delete_site_option_{$option}", $option ); + do_action( "delete_site_option", $option ); + return true; } + return false; +} - sort($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); +/** + * Update the value of a site option that was already added. + * + * @see update_option() + * @since 2.8.0 + * @package WordPress + * @subpackage Option + * + * @uses apply_filters() Calls 'pre_update_site_option_$option' hook to allow overwriting the + * option value to be stored. + * @uses do_action() Calls 'update_site_option_$option' and 'update_site_option' hooks on success. + * + * @param string $option Name of option. Expected to not be SQL-escaped. + * @param mixed $value Option value. Expected to not be SQL-escaped. + * @return bool False if value was not updated and true if value was updated. + */ +function update_site_option( $option, $value ) { + global $wpdb; - foreach (array('png', 'gif', 'jpg', 'jpeg') as $ext) { - if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) { - $screenshot = "screenshot.$ext"; - break; - } - } + $oldvalue = get_site_option( $option ); + $value = apply_filters( 'pre_update_site_option_' . $option, $value, $oldvalue ); - if ( empty($name) ) { - $name = dirname($theme_file); - $title = $name; - } - - if ( empty($template) ) { - if ( file_exists(dirname("$theme_root/$theme_file/index.php")) ) { - $template = dirname($theme_file); - } else { - continue; - } - } + if ( $value === $oldvalue ) + return false; - $template = trim($template); + if ( !is_multisite() ) { + $result = update_option( $option, $value ); + } else { + $cache_key = "{$wpdb->siteid}:$option"; - if ( !file_exists("$theme_root/$template/index.php") ) { - $wp_broken_themes[$name] = array('Name' => $name, 'Title' => $title, 'Description' => __('Template is missing.')); - continue; - } + if ( $value && !$wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ) ) + return add_site_option( $option, $value ); + $value = sanitize_option( $option, $value ); + wp_cache_set( $cache_key, $value, 'site-options' ); - $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"; - } - } + $_value = $value; + $value = maybe_serialize( $value ); + $result = $wpdb->update( $wpdb->sitemeta, array( 'meta_value' => $value ), array( 'site_id' => $wpdb->siteid, 'meta_key' => $option ) ); + $value = $_value; + } - $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"; - } - } + if ( $result ) { + do_action( "update_site_option_{$option}", $option, $value ); + do_action( "update_site_option", $option, $value ); + return true; + } + return false; +} - $template_dir = dirname($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; - } else { - $name = "$name/$stylesheet"; +/** + * Delete a site transient + * + * @since 2.9.0 + * @package WordPress + * @subpackage Transient + * + * @uses do_action() Calls 'delete_site_transient_$transient' hook before transient is deleted. + * @uses do_action() Calls 'deleted_site_transient' hook on success. + * + * @param string $transient Transient name. Expected to not be SQL-escaped. + * @return bool True if successful, false otherwise + */ +function delete_site_transient( $transient ) { + global $_wp_using_ext_object_cache; + + do_action( 'delete_site_transient_' . $transient, $transient ); + if ( $_wp_using_ext_object_cache ) { + $result = wp_cache_delete( $transient, 'site-transient' ); + } else { + $option_timeout = '_site_transient_timeout_' . $transient; + $option = '_site_transient_' . $transient; + $result = delete_site_option( $option ); + if ( $result ) + delete_site_option( $option_timeout ); + } + if ( $result ) + do_action( 'deleted_site_transient', $transient ); + return $result; +} + +/** + * Get the value of a site transient + * + * If the transient does not exist or does not have a value, then the return value + * will be false. + * + * @see get_transient() + * @since 2.9.0 + * @package WordPress + * @subpackage Transient + * + * @uses apply_filters() Calls 'pre_site_transient_$transient' hook before checking the transient. + * Any value other than false will "short-circuit" the retrieval of the transient + * and return the returned value. + * @uses apply_filters() Calls 'site_transient_$option' hook, after checking the transient, with + * the transient value. + * + * @param string $transient Transient name. Expected to not be SQL-escaped. + * @return mixed Value of transient + */ +function get_site_transient( $transient ) { + global $_wp_using_ext_object_cache; + + $pre = apply_filters( 'pre_site_transient_' . $transient, false ); + if ( false !== $pre ) + return $pre; + + if ( $_wp_using_ext_object_cache ) { + $value = wp_cache_get( $transient, 'site-transient' ); + } else { + // Core transients that do not have a timeout. Listed here so querying timeouts can be avoided. + $no_timeout = array('update_core', 'update_plugins', 'update_themes'); + $transient_option = '_site_transient_' . $transient; + if ( ! in_array( $transient, $no_timeout ) ) { + $transient_timeout = '_site_transient_timeout_' . $transient; + $timeout = get_site_option( $transient_timeout ); + if ( false !== $timeout && $timeout < time() ) { + delete_site_option( $transient_option ); + delete_site_option( $transient_timeout ); + return false; } } - $themes[$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); + $value = get_site_option( $transient_option ); } - // Resolve theme dependencies. - $theme_names = array_keys($themes); - - 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; - } - } + return apply_filters( 'site_transient_' . $transient, $value ); +} + +/** + * Set/update the value of a site transient + * + * You do not need to serialize values, if the value needs to be serialize, then + * it will be serialized before it is set. + * + * @see set_transient() + * @since 2.9.0 + * @package WordPress + * @subpackage Transient + * + * @uses apply_filters() Calls 'pre_set_site_transient_$transient' hook to allow overwriting the + * transient value to be stored. + * @uses do_action() Calls 'set_site_transient_$transient' and 'setted_site_transient' hooks on success. + * + * @param string $transient Transient name. Expected to not be SQL-escaped. + * @param mixed $value Transient value. Expected to not be SQL-escaped. + * @param int $expiration Time until expiration in seconds, default 0 + * @return bool False if value was not set and true if value was set. + */ +function set_site_transient( $transient, $value, $expiration = 0 ) { + global $_wp_using_ext_object_cache; + + $value = apply_filters( 'pre_set_site_transient_' . $transient, $value ); + + if ( $_wp_using_ext_object_cache ) { + $result = wp_cache_set( $transient, $value, 'site-transient', $expiration ); + } else { + $transient_timeout = '_site_transient_timeout_' . $transient; + $transient = '_site_transient_' . $transient; + if ( false === get_site_option( $transient ) ) { + if ( $expiration ) + add_site_option( $transient_timeout, time() + $expiration ); + $result = add_site_option( $transient, $value ); + } else { + if ( $expiration ) + update_site_option( $transient_timeout, time() + $expiration ); + $result = update_site_option( $transient, $value ); } } + if ( $result ) { + do_action( 'set_site_transient_' . $transient ); + do_action( 'setted_site_transient', $transient ); + } + return $result; +} + +/** + * is main site + * + * + * @since 3.0.0 + * @package WordPress + * + * @param int $blog_id optional blog id to test (default current blog) + * @return bool True if not multisite or $blog_id is main site + */ +function is_main_site( $blog_id = '' ) { + global $current_site, $current_blog; + + if ( !is_multisite() ) + return true; - $wp_themes = $themes; + if ( !$blog_id ) + $blog_id = $current_blog->blog_id; - return $themes; + return $blog_id == $current_site->blog_id; } -function get_theme($theme) { - $themes = get_themes(); - - if ( array_key_exists($theme, $themes) ) - return $themes[$theme]; - - return NULL; -} +/** + * Whether global terms are enabled. + * + * + * @since 3.0.0 + * @package WordPress + * + * @return bool True if multisite and global terms enabled + */ +function global_terms_enabled() { + if ( ! is_multisite() ) + return false; -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'; + static $global_terms = null; + if ( is_null( $global_terms ) ) { + $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 $global_terms; +} + +/** + * gmt_offset modification for smart timezone handling + * + * Overrides the gmt_offset option if we have a timezone_string available + * + * @since 2.8.0 + * + * @return float|bool + */ +function wp_timezone_override_offset() { + if ( !wp_timezone_supported() ) { + return false; + } + if ( !$timezone_string = get_option( 'timezone_string' ) ) { + return false; + } - 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; + $timezone_object = timezone_open( $timezone_string ); + $datetime_object = date_create(); + if ( false === $timezone_object || false === $datetime_object ) { + return false; + } + return round( timezone_offset_get( $timezone_object, $datetime_object ) / 3600, 2 ); +} + +/** + * Check for PHP timezone support + * + * @since 2.9.0 + * + * @return bool + */ +function wp_timezone_supported() { + $support = false; + if ( + function_exists( 'date_create' ) && + function_exists( 'date_default_timezone_set' ) && + function_exists( 'timezone_identifiers_list' ) && + function_exists( 'timezone_open' ) && + function_exists( 'timezone_offset_get' ) + ) { + $support = true; + } + return apply_filters( 'timezone_support', $support ); +} + +/** + * {@internal Missing Short Description}} + * + * @since 2.9.0 + * + * @param unknown_type $a + * @param unknown_type $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'] ); } - - return $current_theme; -} - -function get_query_template($type) { - $template = ''; - if ( file_exists(TEMPLATEPATH . "/{$type}.php") ) - $template = TEMPLATEPATH . "/{$type}.php"; - - return apply_filters("{$type}_template", $template); -} - -function get_404_template() { - return get_query_template('404'); -} - -function get_archive_template() { - return get_query_template('archive'); -} - -function get_author_template() { - return get_query_template('author'); -} - -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"; - - return apply_filters('category_template', $template); -} - -function get_date_template() { - return get_query_template('date'); } -function get_home_template() { - $template = ''; - - if ( file_exists(TEMPLATEPATH . "/home.php") ) - $template = TEMPLATEPATH . "/home.php"; - else if ( file_exists(TEMPLATEPATH . "/index.php") ) - $template = TEMPLATEPATH . "/index.php"; - - return apply_filters('home_template', $template); -} +/** + * Gives a nicely formatted list of timezone strings // temporary! Not in final + * + * @since 2.9.0 + * + * @param string $selected_zone Selected Zone + * @return string + */ +function wp_timezone_choice( $selected_zone ) { + static $mo_loaded = false; + + $continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific'); + + // Load translations for continents and cities + if ( !$mo_loaded ) { + $locale = get_locale(); + $mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo'; + load_textdomain( 'continents-cities', $mofile ); + $mo_loaded = true; + } -function get_page_template() { - global $wp_query; + $zonen = array(); + foreach ( timezone_identifiers_list() as $zone ) { + $zone = explode( '/', $zone ); + if ( !in_array( $zone[0], $continents ) ) { + continue; + } - $id = $wp_query->post->ID; - $template = get_post_meta($id, '_wp_page_template', true); + // 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 ( 'default' == $template ) - $template = ''; + $structure = array(); - if ( ! empty($template) && file_exists(TEMPLATEPATH . "/$template") ) - $template = TEMPLATEPATH . "/$template"; - else if ( file_exists(TEMPLATEPATH . "/page.php") ) - $template = TEMPLATEPATH . "/page.php"; - else - $template = ''; + if ( empty( $selected_zone ) ) { + $structure[] = ''; + } - return apply_filters('page_template', $template); -} + foreach ( $zonen as $key => $zone ) { + // Build value in an array to join later + $value = array( $zone['continent'] ); -function get_paged_template() { - return get_query_template('paged'); -} + 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_search_template() { - return get_query_template('search'); -} + // Continent optgroup + if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) { + $label = $zone['t_continent']; + $structure[] = ''; + } -function get_single_template() { - return get_query_template('single'); -} + // Add the city to the value + $value[] = $zone['city']; -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'); -} - -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 + * See http://core.trac.wordpress.org/ticket/8497 + * + * @since 2.8.0 + * + * @param string $str + * @return string + */ +function _cleanup_header_comment($str) { + return trim(preg_replace("/\s*(?:\*\/|\?>).*/", '', $str)); +} + +/** + * Permanently deletes posts, pages, attachments, and comments which have been in the trash for EMPTY_TRASH_DAYS. + * + * @since 2.9.0 + */ +function wp_scheduled_delete() { + global $wpdb; - return false; -} + $delete_timestamp = time() - (60*60*24*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 ( preg_match('|^https?://|i', $uri, $matches) ) { - $protocol = $matches[0]; - $uri = substr($uri, strlen($protocol)); - } else { - $protocol = ''; - } + $del_post = get_post($post_id); - if ( strstr($uri, '?') ) { - $parts = explode('?', $uri, 2); - if ( 1 == count($parts) ) { - $base = '?'; - $query = $parts[0]; + if ( !$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 { - $base = $parts[0] . '?'; - $query = $parts[1]; - } - } else if ( !empty($protocol) || strstr($uri, '/') ) { - $base = $uri . '?'; - $query = ''; - } else { - $base = ''; - $query = $uri; - } - - parse_str($query, $qs); - if ( is_array(func_get_arg(0)) ) { - $kayvees = func_get_arg(0); - $qs = array_merge($qs, $kayvees); - } else { - $qs[func_get_arg(0)] = func_get_arg(1); - } - - foreach($qs as $k => $v) { - if ( $v != '' ) { - if ( $ret != '' ) - $ret .= '&'; - $ret .= "$k=$v"; + wp_delete_post($post_id); } } - $ret = $protocol . $base . $ret; - return trim($ret, '?'); -} -function remove_query_arg($key, $query) { - return add_query_arg($key, '', $query); -} - -function load_template($file) { - global $posts, $post, $wp_did_header, $wp_did_template_redirect, $wp_query, - $wp_rewrite, $wpdb; - - extract($wp_query->query_vars); + $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'", $delete_timestamp), ARRAY_A); - require_once($file); -} + foreach ( (array) $comments_to_delete as $comment ) { + $comment_id = (int) $comment['comment_id']; + if ( !$comment_id ) + continue; -function add_magic_quotes($array) { - global $wpdb; + $del_comment = get_comment($comment_id); - foreach ($array as $k => $v) { - if ( is_array($v) ) { - $array[$k] = add_magic_quotes($v); + if ( !$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 { - $array[$k] = $wpdb->escape($v); + wp_delete_comment($comment_id); } } - return $array; -} - -function wp_remote_fopen( $uri ) { - if ( ini_get('allow_url_fopen') ) { - $fp = fopen( $uri, 'r' ); - if ( !$fp ) - return false; - $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); - $buffer = curl_exec($handle); - curl_close($handle); - return $buffer; - } else { - return false; - } } -function wp($query_vars = '') { - global $wp; - - $wp->main($query_vars); -} - -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'; - - @header("HTTP/1.1 $header $text"); - @header("Status: $header $text"); -} +/** + * 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 multple + * 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. + * + * @see http://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 $context If specified adds filter hook "extra_{$context}_headers" + */ +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 ); -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'); -} + if ( $context != '' ) { + $extra_headers = apply_filters( "extra_{$context}_headers", array() ); -function get_usermeta( $user_id, $meta_key = '') { - global $wpdb; - $user_id = (int) $user_id; - - if ( !empty($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'"); + $extra_headers = array_flip( $extra_headers ); + foreach( $extra_headers as $key=>$value ) { + $extra_headers[$key] = $key; + } + $all_headers = array_merge( $extra_headers, (array) $default_headers ); } else { - $metas = $wpdb->get_results("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = '$user_id'"); + $all_headers = $default_headers; } - if ( empty($metas) ) { - if ( empty($meta_key) ) - return array(); + foreach ( $all_headers as $field => $regex ) { + preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field}); + if ( !empty( ${$field} ) ) + ${$field} = _cleanup_header_comment( ${$field}[1] ); else - return ''; - } - - foreach ($metas as $index => $meta) { - @ $value = unserialize($meta->meta_value); - if ( $value === FALSE ) - $value = $meta->meta_value; - - $values[] = $value; - } - - if ( count($values) == 1 ) - return $values[0]; - else - return $values; -} - -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', '', $meta_key); - - if ( is_array($meta_value) || is_object($meta_value) ) - $meta_value = serialize($meta_value); - $meta_value = trim( $meta_value ); - - if (empty($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; + ${$field} = ''; } - - $user = get_userdata($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', '', $meta_key); - - if ( is_array($meta_value) || is_object($meta_value) ) - $meta_value = serialize($meta_value); - $meta_value = trim( $meta_value ); - - if ( ! empty($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'); - + $file_data = compact( array_keys( $all_headers ) ); + + return $file_data; +} + +/** + * Used internally to tidy up the search terms + * + * @access private + * @since 2.9.0 + * + * @param string $t + * @return string + */ +function _search_terms_tidy($t) { + return trim($t, "\"'\n\r "); +} + +/** + * Returns true + * + * Useful for returning true to filters easily + * + * @since 3.0.0 + * @see __return_false() + * @return bool true + */ +function __return_true() { return true; } -function register_activation_hook($file, $function) { - $file = plugin_basename($file); - - add_action('activate_' . $file, $function); -} - -function register_deactivation_hook($file, $function) { - $file = plugin_basename($file); - - add_action('deactivate_' . $file, $function); -} - -function plugin_basename($file) { - $file = preg_replace('|\\\\+|', '\\\\', $file); - $file = preg_replace('/^.*wp-content[\\\\\/]plugins[\\\\\/]/', '', $file); - return $file; -} - -function get_num_queries() { - global $wpdb; - return $wpdb->num_queries; -} - -function wp_nonce_url($actionurl, $action = -1) { - return wp_specialchars(add_query_arg('_wpnonce', wp_create_nonce($action), $actionurl)); +/** + * Returns false + * + * Useful for returning false to filters easily + * + * @since 3.0.0 + * @see __return_true() + * @return bool false + */ +function __return_false() { + return false; } -function wp_nonce_field($action = -1) { - echo ''; - wp_referer_field(); +/** + * Returns 0 + * + * Useful for returning 0 to filters easily + * + * @since 3.0.0 + * @see __return_zero() + * @return int 0 + */ +function __return_zero() { + return 0; } -function wp_referer_field() { - $ref = wp_specialchars($_SERVER['REQUEST_URI']); - echo ''; - if ( wp_get_original_referer() ) { - $original_ref = wp_specialchars(stripslashes(wp_get_original_referer())); - echo ''; +/** + * Returns an empty array + * + * Useful for returning an empty array to filters easily + * + * @since 3.0.0 + * @see __return_zero() + * @return array Empty array + */ +function __return_empty_array() { + return array(); +} + +/** + * Send a HTTP header to disable content type sniffing in browsers which support it. + * + * @link http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx + * @link http://src.chromium.org/viewvc/chrome?view=rev&revision=6985 + * + * @since 3.0.0 + * @return none + */ +function send_nosniff_header() { + @header( 'X-Content-Type-Options: nosniff' ); +} + +/** + * Returns a MySQL expression for selecting the week number based on the start_of_week option. + * + * @internal + * @since 3.0.0 + * @param string $column + * @return string + */ +function _wp_mysql_week( $column ) { + switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) { + default : + case 0 : + return "WEEK( $column, 0 )"; + case 1 : + return "WEEK( $column, 1 )"; + case 2 : + case 3 : + case 4 : + case 5 : + case 6 : + return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )"; } } -function wp_original_referer_field() { - echo ''; -} - -function wp_get_referer() { - foreach ( array($_REQUEST['_wp_http_referer'], $_SERVER['HTTP_REFERER']) as $ref ) - if ( !empty($ref) ) - return $ref; - return false; -} - -function wp_get_original_referer() { - if ( !empty($_REQUEST['_wp_original_http_referer']) ) - return $_REQUEST['_wp_original_http_referer']; - return false; -} - -function wp_explain_nonce($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]; - } - } +/** + * Finds hierarchy loops using a callback function that maps object IDs to parent IDs. + * + * @since 3.1.0 + * @access private + * + * @param callback $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 ); +} + +/** + * Uses 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 callback $callback function that accupts ( ID, callback_arg, ... ) and outputs parent_ID + * @param int $start The ID to start the loop check at + * @param array $override an array of ( ID => parent_ID, ... ) to use instead of $callback + * @param array $callback_args optional additional arguments to send to $callback + * @param bool $_return_loop 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) + * @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 ), $callback_args ) ); } - return __('Are you sure you want to do this'); + return false; } -function wp_nonce_ays($action) { - global $pagenow, $menu, $submenu, $parent_file, $submenu_file; - - $adminurl = get_settings('siteurl') . '/wp-admin'; - if ( wp_get_referer() ) - $adminurl = wp_get_referer(); - - $title = __('WordPress Confirmation'); - // Remove extra layer of slashes. - $_POST = stripslashes_deep($_POST ); - if ( $_POST ) { - $q = http_build_query($_POST); - $q = explode( ini_get('arg_separator.output'), $q); - $html .= "\t
\n"; - foreach ( (array) $q as $a ) { - $v = substr(strstr($a, '='), 1); - $k = substr($a, 0, -(strlen($v)+1)); - $html .= "\t\t\n"; - } - $html .= "\t\t\n"; - $html .= "\t\t
\n\t\t

" . wp_explain_nonce($action) . "

\n\t\t

" . __('No') . "

\n\t\t
\n\t
\n"; - } else { - $html .= "\t
\n\t

" . wp_explain_nonce($action) . "

\n\t

" . __('No') . " " . __('Yes') . "

\n\t
\n"; - } - $html .= "\n"; - wp_die($html, $title); +/** + * Send a HTTP header to limit rendering of pages to same origin iframes. + * + * @link https://developer.mozilla.org/en/the_x-frame-options_response_header + * + * @since 3.1.3 + * @return none + */ +function send_frame_options_header() { + @header( 'X-Frame-Options: SAMEORIGIN' ); } -function wp_die($message, $title = '') { - header('Content-Type: text/html; charset=utf-8'); - - if ( empty($title) ) - $title = __('WordPress › Error'); ?> - - - - <?php echo $title ?> - - - - -

WordPress

-

- - - \ No newline at end of file