Web.Admin/2014/wordpress/wp-admin/includes/misc.php
<?php
/**
* Misc WordPress Administration API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @return unknown
*/
function got_mod_rewrite() {
$got_rewrite = apache_mod_loaded('mod_rewrite', true);
return apply_filters('got_rewrite', $got_rewrite);
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $filename
* @param unknown_type $marker
* @return array An array of strings from a file (.htaccess ) from between BEGIN and END markers.
*/
function extract_from_markers( $filename, $marker ) {
$result = array ();
if (!file_exists( $filename ) ) {
return $result;
}
if ( $markerdata = explode( "\n", implode( '', file( $filename ) ) ));
{
$state = false;
foreach ( $markerdata as $markerline ) {
if (strpos($markerline, '# END ' . $marker) !== false)
$state = false;
if ( $state )
$result[] = $markerline;
if (strpos($markerline, '# BEGIN ' . $marker) !== false)
$state = true;
}
}
return $result;
}
/**
* {@internal Missing Short Description}}
*
* Inserts an array of strings into a file (.htaccess ), placing it between
* BEGIN and END markers. Replaces existing marked info. Retains surrounding
* data. Creates file if none exists.
*
* @since unknown
*
* @param unknown_type $filename
* @param unknown_type $marker
* @param unknown_type $insertion
* @return bool True on write success, false on failure.
*/
function insert_with_markers( $filename, $marker, $insertion ) {
if (!file_exists( $filename ) || is_writeable( $filename ) ) {
if (!file_exists( $filename ) ) {
$markerdata = '';
} else {
$markerdata = explode( "\n", implode( '', file( $filename ) ) );
}
if ( !$f = @fopen( $filename, 'w' ) )
return false;
$foundit = false;
if ( $markerdata ) {
$state = true;
foreach ( $markerdata as $n => $markerline ) {
if (strpos($markerline, '# BEGIN ' . $marker) !== false)
$state = false;
if ( $state ) {
if ( $n + 1 < count( $markerdata ) )
fwrite( $f, "{$markerline}\n" );
else
fwrite( $f, "{$markerline}" );
}
if (strpos($markerline, '# END ' . $marker) !== false) {
fwrite( $f, "# BEGIN {$marker}\n" );
if ( is_array( $insertion ))
foreach ( $insertion as $insertline )
fwrite( $f, "{$insertline}\n" );
fwrite( $f, "# END {$marker}\n" );
$state = true;
$foundit = true;
}
}
}
if (!$foundit) {
fwrite( $f, "\n# BEGIN {$marker}\n" );
foreach ( $insertion as $insertline )
fwrite( $f, "{$insertline}\n" );
fwrite( $f, "# END {$marker}\n" );
}
fclose( $f );
return true;
} else {
return false;
}
}
/**
* Updates the htaccess file with the current rules if it is writable.
*
* Always writes to the file if it exists and is writable to ensure that we
* blank out old rules.
*
* @since unknown
*/
function save_mod_rewrite_rules() {
global $wp_rewrite;
$home_path = get_home_path();
$htaccess_file = $home_path.'.htaccess';
// If the file doesn't already exists check for write access to the directory and whether of not we have some rules.
// else check for write access to the file.
if ((!file_exists($htaccess_file) && is_writable($home_path) && $wp_rewrite->using_mod_rewrite_permalinks()) || is_writable($htaccess_file)) {
if ( got_mod_rewrite() ) {
$rules = explode( "\n", $wp_rewrite->mod_rewrite_rules() );
return insert_with_markers( $htaccess_file, 'WordPress', $rules );
}
}
return false;
}
/**
* Updates the IIS web.config file with the current rules if it is writable.
* If the permalinks do not require rewrite rules then the rules are deleted from the web.config file.
*
* @since 2.8.0
*
* @return bool True if web.config was updated successfully
*/
function iis7_save_url_rewrite_rules(){
global $wp_rewrite;
$home_path = get_home_path();
$web_config_file = $home_path . 'web.config';
// Using win_is_writable() instead of is_writable() because of a bug in Windows PHP
if ( ( ! file_exists($web_config_file) && win_is_writable($home_path) && $wp_rewrite->using_mod_rewrite_permalinks() ) || win_is_writable($web_config_file) ) {
if ( iis7_supports_permalinks() ) {
$rule = $wp_rewrite->iis7_url_rewrite_rules(false, '', '');
if ( ! empty($rule) ) {
return iis7_add_rewrite_rule($web_config_file, $rule);
} else {
return iis7_delete_rewrite_rule($web_config_file);
}
}
}
return false;
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $file
*/
function update_recently_edited( $file ) {
$oldfiles = (array ) get_option( 'recently_edited' );
if ( $oldfiles ) {
$oldfiles = array_reverse( $oldfiles );
$oldfiles[] = $file;
$oldfiles = array_reverse( $oldfiles );
$oldfiles = array_unique( $oldfiles );
if ( 5 < count( $oldfiles ))
array_pop( $oldfiles );
} else {
$oldfiles[] = $file;
}
update_option( 'recently_edited', $oldfiles );
}
/**
* If siteurl or home changed, flush rewrite rules.
*
* @since unknown
*
* @param unknown_type $old_value
* @param unknown_type $value
*/
function update_home_siteurl( $old_value, $value ) {
global $wp_rewrite;
if ( defined( "WP_INSTALLING" ) )
return;
// If home changed, write rewrite rules to new location.
$wp_rewrite->flush_rules();
}
add_action( 'update_option_home', 'update_home_siteurl', 10, 2 );
add_action( 'update_option_siteurl', 'update_home_siteurl', 10, 2 );
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $url
* @return unknown
*/
function url_shorten( $url ) {
$short_url = str_replace( 'http://', '', stripslashes( $url ));
$short_url = str_replace( 'www.', '', $short_url );
if ('/' == substr( $short_url, -1 ))
$short_url = substr( $short_url, 0, -1 );
if ( strlen( $short_url ) > 35 )
$short_url = substr( $short_url, 0, 32 ).'...';
return $short_url;
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $vars
*/
function wp_reset_vars( $vars ) {
for ( $i=0; $i<count( $vars ); $i += 1 ) {
$var = $vars[$i];
global $$var;
if (!isset( $$var ) ) {
if ( empty( $_POST["$var"] ) ) {
if ( empty( $_GET["$var"] ) )
$$var = '';
else
$$var = $_GET["$var"];
} else {
$$var = $_POST["$var"];
}
}
}
}
/**
* {@internal Missing Short Description}}
*
* @since unknown
*
* @param unknown_type $message
*/
function show_message($message) {
if( is_wp_error($message) ){
if( $message->get_error_data() )
$message = $message->get_error_message() . ': ' . $message->get_error_data();
else
$message = $message->get_error_message();
}
echo "<p>$message</p>\n";
}
function wp_doc_link_parse( $content ) {
if ( !is_string( $content ) || empty( $content ) )
return array();
if ( !function_exists('token_get_all') )
return array();
$tokens = token_get_all( $content );
$functions = array();
$ignore_functions = array();
for ( $t = 0, $count = count( $tokens ); $t < $count; $t++ ) {
if ( !is_array( $tokens[$t] ) ) continue;
if ( T_STRING == $tokens[$t][0] && ( '(' == $tokens[ $t + 1 ] || '(' == $tokens[ $t + 2 ] ) ) {
// If it's a function or class defined locally, there's not going to be any docs available
if ( ( isset( $tokens[ $t - 2 ][1] ) && in_array( $tokens[ $t - 2 ][1], array( 'function', 'class' ) ) ) || ( isset( $tokens[ $t - 2 ][0] ) && T_OBJECT_OPERATOR == $tokens[ $t - 1 ][0] ) ) {
$ignore_functions[] = $tokens[$t][1];
}
// Add this to our stack of unique references
$functions[] = $tokens[$t][1];
}
}
$functions = array_unique( $functions );
sort( $functions );
$ignore_functions = apply_filters( 'documentation_ignore_functions', $ignore_functions );
$ignore_functions = array_unique( $ignore_functions );
$out = array();
foreach ( $functions as $function ) {
if ( in_array( $function, $ignore_functions ) )
continue;
$out[] = $function;
}
return $out;
}
/**
* Determines the language to use for CodePress syntax highlighting,
* based only on a filename.
*
* @since 2.8
*
* @param string $filename The name of the file to be highlighting
**/
function codepress_get_lang( $filename ) {
$codepress_supported_langs = apply_filters( 'codepress_supported_langs',
array( '.css' => 'css',
'.js' => 'javascript',
'.php' => 'php',
'.html' => 'html',
'.htm' => 'html',
'.txt' => 'text'
) );
$extension = substr( $filename, strrpos( $filename, '.' ) );
if ( $extension && array_key_exists( $extension, $codepress_supported_langs ) )
return $codepress_supported_langs[$extension];
return 'generic';
}
/**
* Adds Javascript required to make CodePress work on the theme/plugin editors.
*
* This code is attached to the action admin_print_footer_scripts.
*
* @since 2.8
**/
function codepress_footer_js() {
// Script-loader breaks CP's automatic path-detection, thus CodePress.path
// CP edits in an iframe, so we need to grab content back into normal form
?><script type="text/javascript">
/* <![CDATA[ */
var codepress_path = '<?php echo includes_url('js/codepress/'); ?>';
jQuery('#template').submit(function(){
if (jQuery('#newcontent_cp').length)
jQuery('#newcontent_cp').val(newcontent.getCode()).removeAttr('disabled');
});
jQuery('#codepress-on').hide();
jQuery('#codepress-off').show();
/* ]]> */
</script>
<?php
}
/**
* Determine whether to use CodePress or not.
*
* @since 2.8
**/
function use_codepress() {
if ( isset($_GET['codepress']) ) {
$on = 'on' == $_GET['codepress'] ? 'on' : 'off';
set_user_setting( 'codepress', $on );
} else {
$on = get_user_setting('codepress', 'on');
}
if ( 'on' == $on ) {
add_action( 'admin_print_footer_scripts', 'codepress_footer_js' );
return true;
}
return false;
}
/**
* Saves option for number of rows when listing posts, pages, comments, etc.
*
* @since 2.8
**/
function set_screen_options() {
if ( isset($_POST['wp_screen_options']) && is_array($_POST['wp_screen_options']) ) {
check_admin_referer( 'screen-options-nonce', 'screenoptionnonce' );
if ( !$user = wp_get_current_user() )
return;
$option = $_POST['wp_screen_options']['option'];
$value = $_POST['wp_screen_options']['value'];
if ( !preg_match( '/^[a-z_-]+$/', $option ) )
return;
$option = str_replace('-', '_', $option);
switch ( $option ) {
case 'edit_per_page':
case 'edit_pages_per_page':
case 'edit_comments_per_page':
case 'upload_per_page':
case 'categories_per_page':
case 'edit_tags_per_page':
case 'plugins_per_page':
$value = (int) $value;
if ( $value < 1 || $value > 999 )
return;
break;
default:
$value = apply_filters('set-screen-option', false, $option, $value);
if ( false === $value )
return;
break;
}
update_usermeta($user->ID, $option, $value);
wp_redirect( remove_query_arg( array('pagenum', 'apage', 'paged'), wp_get_referer() ) );
exit;
}
}
function wp_menu_unfold() {
if ( isset($_GET['unfoldmenu']) ) {
delete_user_setting('mfold');
wp_redirect( remove_query_arg( 'unfoldmenu', stripslashes($_SERVER['REQUEST_URI']) ) );
exit;
}
}
/**
* 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 apply_filters('iis7_supports_permalinks', $supports_permalinks);
}
/**
* Check if rewrite rule for WordPress already exists in the IIS 7 configuration file
*
* @since 2.8.0
*
* @return bool
* @param string $filename The file path to the configuration file
*/
function iis7_rewrite_rule_exists($filename) {
if ( ! file_exists($filename) )
return false;
if ( ! class_exists('DOMDocument') )
return false;
$doc = new DOMDocument();
if ( $doc->load($filename) === false )
return false;
$xpath = new DOMXPath($doc);
$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']');
if ( $rules->length == 0 )
return false;
else
return true;
}
/**
* Delete WordPress rewrite rule from web.config file if it exists there
*
* @since 2.8.0
*
* @param string $filename Name of the configuration file
* @return bool
*/
function iis7_delete_rewrite_rule($filename) {
// If configuration file does not exist then rules also do not exist so there is nothing to delete
if ( ! file_exists($filename) )
return true;
if ( ! class_exists('DOMDocument') )
return false;
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
if ( $doc -> load($filename) === false )
return false;
$xpath = new DOMXPath($doc);
$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']');
if ( $rules->length > 0 ) {
$child = $rules->item(0);
$parent = $child->parentNode;
$parent->removeChild($child);
$doc->formatOutput = true;
saveDomDocument($doc, $filename);
}
return true;
}
/**
* Add WordPress rewrite rule to the IIS 7 configuration file.
*
* @since 2.8.0
*
* @param string $filename The file path to the configuration file
* @param string $rewrite_rule The XML fragment with URL Rewrite rule
* @return bool
*/
function iis7_add_rewrite_rule($filename, $rewrite_rule) {
if ( ! class_exists('DOMDocument') )
return false;
// If configuration file does not exist then we create one.
if ( ! file_exists($filename) ) {
$fp = fopen( $filename, 'w');
fwrite($fp, '<configuration/>');
fclose($fp);
}
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
if ( $doc->load($filename) === false )
return false;
$xpath = new DOMXPath($doc);
// First check if the rule already exists as in that case there is no need to re-add it
$wordpress_rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']');
if ( $wordpress_rules->length > 0 )
return true;
// Check the XPath to the rewrite rule and create XML nodes if they do not exist
$xmlnodes = $xpath->query('/configuration/system.webServer/rewrite/rules');
if ( $xmlnodes->length > 0 ) {
$rules_node = $xmlnodes->item(0);
} else {
$rules_node = $doc->createElement('rules');
$xmlnodes = $xpath->query('/configuration/system.webServer/rewrite');
if ( $xmlnodes->length > 0 ) {
$rewrite_node = $xmlnodes->item(0);
$rewrite_node->appendChild($rules_node);
} else {
$rewrite_node = $doc->createElement('rewrite');
$rewrite_node->appendChild($rules_node);
$xmlnodes = $xpath->query('/configuration/system.webServer');
if ( $xmlnodes->length > 0 ) {
$system_webServer_node = $xmlnodes->item(0);
$system_webServer_node->appendChild($rewrite_node);
} else {
$system_webServer_node = $doc->createElement('system.webServer');
$system_webServer_node->appendChild($rewrite_node);
$xmlnodes = $xpath->query('/configuration');
if ( $xmlnodes->length > 0 ) {
$config_node = $xmlnodes->item(0);
$config_node->appendChild($system_webServer_node);
} else {
$config_node = $doc->createElement('configuration');
$doc->appendChild($config_node);
$config_node->appendChild($system_webServer_node);
}
}
}
}
$rule_fragment = $doc->createDocumentFragment();
$rule_fragment->appendXML($rewrite_rule);
$rules_node->appendChild($rule_fragment);
$doc->encoding = "UTF-8";
$doc->formatOutput = true;
saveDomDocument($doc, $filename);
return true;
}
/**
* Saves the XML document into a file
*
* @since 2.8.0
*
* @param DOMDocument $doc
* @param string $filename
*/
function saveDomDocument($doc, $filename) {
$config = $doc->saveXML();
$config = preg_replace("/([^\r])\n/", "$1\r\n", $config);
$fp = fopen($filename, 'w');
fwrite($fp, $config);
fclose($fp);
}
/**
* Workaround for Windows bug in is_writable() function
*
* @since 2.8.0
*
* @param object $path
* @return bool
*/
function win_is_writable($path) {
/* will work in despite of Windows ACLs bug
* NOTE: use a trailing slash for folders!!!
* see http://bugs.php.net/bug.php?id=27609
* see http://bugs.php.net/bug.php?id=30931
*/
if ( $path{strlen($path)-1} == '/' ) // recursively return a temporary file path
return win_is_writable($path . uniqid(mt_rand()) . '.tmp');
else if ( is_dir($path) )
return win_is_writable($path . '/' . uniqid(mt_rand()) . '.tmp');
// check tmp file for read/write capabilities
$rm = file_exists($path);
$f = @fopen($path, 'a');
if ($f===false)
return false;
fclose($f);
if ( ! $rm )
unlink($path);
return true;
}
?>