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<?php
/**
* Misc WordPress Administration API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* Returns whether the server is running Apache with the mod_rewrite module loaded.
*
* @since 2.0.0
*
* @return bool Whether the server is running Apache with the mod_rewrite module loaded.
*/
function got_mod_rewrite() {
$got_rewrite = apache_mod_loaded( 'mod_rewrite', true );
/**
* Filters whether Apache and mod_rewrite are present.
*
* This filter was previously used to force URL rewriting for other servers,
* like nginx. Use the {@see 'got_url_rewrite'} filter in got_url_rewrite() instead.
*
* @since 2.5.0
*
* @see got_url_rewrite()
*
* @param bool $got_rewrite Whether Apache and mod_rewrite are present.
*/
return apply_filters( 'got_rewrite', $got_rewrite );
}
/**
* Returns whether the server supports URL rewriting.
*
* Detects Apache's mod_rewrite, IIS 7.0+ permalink support, and nginx.
*
* @since 3.7.0
*
* @global bool $is_nginx
*
* @return bool Whether the server supports URL rewriting.
*/
function got_url_rewrite() {
$got_url_rewrite = ( got_mod_rewrite() || $GLOBALS['is_nginx'] || iis7_supports_permalinks() );
/**
* Filters whether URL rewriting is available.
*
* @since 3.7.0
*
* @param bool $got_url_rewrite Whether URL rewriting is available.
*/
return apply_filters( 'got_url_rewrite', $got_url_rewrite );
}
/**
* Extracts strings from between the BEGIN and END markers in the .htaccess file.
*
* @since 1.5.0
*
* @param string $filename Filename to extract the strings from.
* @param string $marker The marker to extract the strings from.
* @return string[] 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;
}
$markerdata = explode( "\n", implode( '', file( $filename ) ) );
$state = false;
foreach ( $markerdata as $markerline ) {
if ( false !== strpos( $markerline, '# END ' . $marker ) ) {
$state = false;
}
if ( $state ) {
if ( '#' === substr( $markerline, 0, 1 ) ) {
continue;
}
$result[] = $markerline;
}
if ( false !== strpos( $markerline, '# BEGIN ' . $marker ) ) {
$state = true;
}
}
return $result;
}
/**
* 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 1.5.0
*
* @param string $filename Filename to alter.
* @param string $marker The marker to alter.
* @param array|string $insertion The new content to insert.
* @return bool True on write success, false on failure.
*/
function insert_with_markers( $filename, $marker, $insertion ) {
if ( ! file_exists( $filename ) ) {
if ( ! is_writable( dirname( $filename ) ) ) {
return false;
}
if ( ! touch( $filename ) ) {
return false;
}
// Make sure the file is created with a minimum set of permissions.
$perms = fileperms( $filename );
if ( $perms ) {
chmod( $filename, $perms | 0644 );
}
} elseif ( ! is_writable( $filename ) ) {
return false;
}
if ( ! is_array( $insertion ) ) {
$insertion = explode( "\n", $insertion );
}
$switched_locale = switch_to_locale( get_locale() );
$instructions = sprintf(
/* translators: 1: Marker. */
__(
'The directives (lines) between "BEGIN %1$s" and "END %1$s" are
dynamically generated, and should only be modified via WordPress filters.
Any changes to the directives between these markers will be overwritten.'
),
$marker
);
$instructions = explode( "\n", $instructions );
foreach ( $instructions as $line => $text ) {
$instructions[ $line ] = '# ' . $text;
}
/**
* Filters the inline instructions inserted before the dynamically generated content.
*
* @since 5.3.0
*
* @param string[] $instructions Array of lines with inline instructions.
* @param string $marker The marker being inserted.
*/
$instructions = apply_filters( 'insert_with_markers_inline_instructions', $instructions, $marker );
if ( $switched_locale ) {
restore_previous_locale();
}
$insertion = array_merge( $instructions, $insertion );
$start_marker = "# BEGIN {$marker}";
$end_marker = "# END {$marker}";
$fp = fopen( $filename, 'r+' );
if ( ! $fp ) {
return false;
}
// Attempt to get a lock. If the filesystem supports locking, this will block until the lock is acquired.
flock( $fp, LOCK_EX );
$lines = array();
while ( ! feof( $fp ) ) {
$lines[] = rtrim( fgets( $fp ), "\r\n" );
}
// Split out the existing file into the preceding lines, and those that appear after the marker.
$pre_lines = array();
$post_lines = array();
$existing_lines = array();
$found_marker = false;
$found_end_marker = false;
foreach ( $lines as $line ) {
if ( ! $found_marker && false !== strpos( $line, $start_marker ) ) {
$found_marker = true;
continue;
} elseif ( ! $found_end_marker && false !== strpos( $line, $end_marker ) ) {
$found_end_marker = true;
continue;
}
if ( ! $found_marker ) {
$pre_lines[] = $line;
} elseif ( $found_marker && $found_end_marker ) {
$post_lines[] = $line;
} else {
$existing_lines[] = $line;
}
}
// Check to see if there was a change.
if ( $existing_lines === $insertion ) {
flock( $fp, LOCK_UN );
fclose( $fp );
return true;
}
// Generate the new file data.
$new_file_data = implode(
"\n",
array_merge(
$pre_lines,
array( $start_marker ),
$insertion,
array( $end_marker ),
$post_lines
)
);
// Write to the start of the file, and truncate it to that length.
fseek( $fp, 0 );
$bytes = fwrite( $fp, $new_file_data );
if ( $bytes ) {
ftruncate( $fp, ftell( $fp ) );
}
fflush( $fp );
flock( $fp, LOCK_UN );
fclose( $fp );
return (bool) $bytes;
}
/**
* 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 1.5.0
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @return bool|null True on write success, false on failure. Null in multisite.
*/
function save_mod_rewrite_rules() {
if ( is_multisite() ) {
return;
}
global $wp_rewrite;
// Ensure get_home_path() is declared.
require_once ABSPATH . 'wp-admin/includes/file.php';
$home_path = get_home_path();
$htaccess_file = $home_path . '.htaccess';
/*
* If the file doesn't already exist check for write access to the directory
* and whether 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
*
* @global WP_Rewrite $wp_rewrite WordPress rewrite component.
*
* @return bool|null True on write success, false on failure. Null in multisite.
*/
function iis7_save_url_rewrite_rules() {
if ( is_multisite() ) {
return;
}
global $wp_rewrite;
// Ensure get_home_path() is declared.
require_once ABSPATH . 'wp-admin/includes/file.php';
$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 ( iis7_supports_permalinks() && ( ( ! file_exists( $web_config_file ) && win_is_writable( $home_path ) && $wp_rewrite->using_mod_rewrite_permalinks() ) || win_is_writable( $web_config_file ) ) ) {
$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;
}
/**
* Update the "recently-edited" file for the plugin or theme editor.
*
* @since 1.5.0
*
* @param string $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 );
}
/**
* Makes a tree structure for the theme editor's file list.
*
* @since 4.9.0
* @access private
*
* @param array $allowed_files List of theme file paths.
* @return array Tree structure for listing theme files.
*/
function wp_make_theme_file_tree( $allowed_files ) {
$tree_list = array();
foreach ( $allowed_files as $file_name => $absolute_filename ) {
$list = explode( '/', $file_name );
$last_dir = &$tree_list;
foreach ( $list as $dir ) {
$last_dir =& $last_dir[ $dir ];
}
$last_dir = $file_name;
}
return $tree_list;
}
/**
* Outputs the formatted file list for the theme editor.
*
* @since 4.9.0
* @access private
*
* @global string $relative_file Name of the file being edited relative to the
* theme directory.
* @global string $stylesheet The stylesheet name of the theme being edited.
*
* @param array|string $tree List of file/folder paths, or filename.
* @param int $level The aria-level for the current iteration.
* @param int $size The aria-setsize for the current iteration.
* @param int $index The aria-posinset for the current iteration.
*/
function wp_print_theme_file_tree( $tree, $level = 2, $size = 1, $index = 1 ) {
global $relative_file, $stylesheet;
if ( is_array( $tree ) ) {
$index = 0;
$size = count( $tree );
foreach ( $tree as $label => $theme_file ) :
$index++;
if ( ! is_array( $theme_file ) ) {
wp_print_theme_file_tree( $theme_file, $level, $index, $size );
continue;
}
?>
<li role="treeitem" aria-expanded="true" tabindex="-1"
aria-level="<?php echo esc_attr( $level ); ?>"
aria-setsize="<?php echo esc_attr( $size ); ?>"
aria-posinset="<?php echo esc_attr( $index ); ?>">
<span class="folder-label"><?php echo esc_html( $label ); ?> <span class="screen-reader-text"><?php _e( 'folder' ); ?></span><span aria-hidden="true" class="icon"></span></span>
<ul role="group" class="tree-folder"><?php wp_print_theme_file_tree( $theme_file, $level + 1, $index, $size ); ?></ul>
</li>
<?php
endforeach;
} else {
$filename = $tree;
$url = add_query_arg(
array(
'file' => rawurlencode( $tree ),
'theme' => rawurlencode( $stylesheet ),
),
self_admin_url( 'theme-editor.php' )
);
?>
<li role="none" class="<?php echo esc_attr( $relative_file === $filename ? 'current-file' : '' ); ?>">
<a role="treeitem" tabindex="<?php echo esc_attr( $relative_file === $filename ? '0' : '-1' ); ?>"
href="<?php echo esc_url( $url ); ?>"
aria-level="<?php echo esc_attr( $level ); ?>"
aria-setsize="<?php echo esc_attr( $size ); ?>"
aria-posinset="<?php echo esc_attr( $index ); ?>">
<?php
$file_description = esc_html( get_file_description( $filename ) );
if ( $file_description !== $filename && wp_basename( $filename ) !== $file_description ) {
$file_description .= '<br /><span class="nonessential">(' . esc_html( $filename ) . ')</span>';
}
if ( $relative_file === $filename ) {
echo '<span class="notice notice-info">' . $file_description . '</span>';
} else {
echo $file_description;
}
?>
</a>
</li>
<?php
}
}
/**
* Makes a tree structure for the plugin editor's file list.
*
* @since 4.9.0
* @access private
*
* @param array $plugin_editable_files List of plugin file paths.
* @return array Tree structure for listing plugin files.
*/
function wp_make_plugin_file_tree( $plugin_editable_files ) {
$tree_list = array();
foreach ( $plugin_editable_files as $plugin_file ) {
$list = explode( '/', preg_replace( '#^.+?/#', '', $plugin_file ) );
$last_dir = &$tree_list;
foreach ( $list as $dir ) {
$last_dir =& $last_dir[ $dir ];
}
$last_dir = $plugin_file;
}
return $tree_list;
}
/**
* Outputs the formatted file list for the plugin editor.
*
* @since 4.9.0
* @access private
*
* @param array|string $tree List of file/folder paths, or filename.
* @param string $label Name of file or folder to print.
* @param int $level The aria-level for the current iteration.
* @param int $size The aria-setsize for the current iteration.
* @param int $index The aria-posinset for the current iteration.
*/
function wp_print_plugin_file_tree( $tree, $label = '', $level = 2, $size = 1, $index = 1 ) {
global $file, $plugin;
if ( is_array( $tree ) ) {
$index = 0;
$size = count( $tree );
foreach ( $tree as $label => $plugin_file ) :
$index++;
if ( ! is_array( $plugin_file ) ) {
wp_print_plugin_file_tree( $plugin_file, $label, $level, $index, $size );
continue;
}
?>
<li role="treeitem" aria-expanded="true" tabindex="-1"
aria-level="<?php echo esc_attr( $level ); ?>"
aria-setsize="<?php echo esc_attr( $size ); ?>"
aria-posinset="<?php echo esc_attr( $index ); ?>">
<span class="folder-label"><?php echo esc_html( $label ); ?> <span class="screen-reader-text"><?php _e( 'folder' ); ?></span><span aria-hidden="true" class="icon"></span></span>
<ul role="group" class="tree-folder"><?php wp_print_plugin_file_tree( $plugin_file, '', $level + 1, $index, $size ); ?></ul>
</li>
<?php
endforeach;
} else {
$url = add_query_arg(
array(
'file' => rawurlencode( $tree ),
'plugin' => rawurlencode( $plugin ),
),
self_admin_url( 'plugin-editor.php' )
);
?>
<li role="none" class="<?php echo esc_attr( $file === $tree ? 'current-file' : '' ); ?>">
<a role="treeitem" tabindex="<?php echo esc_attr( $file === $tree ? '0' : '-1' ); ?>"
href="<?php echo esc_url( $url ); ?>"
aria-level="<?php echo esc_attr( $level ); ?>"
aria-setsize="<?php echo esc_attr( $size ); ?>"
aria-posinset="<?php echo esc_attr( $index ); ?>">
<?php
if ( $file === $tree ) {
echo '<span class="notice notice-info">' . esc_html( $label ) . '</span>';
} else {
echo esc_html( $label );
}
?>
</a>
</li>
<?php
}
}
/**
* Flushes rewrite rules if siteurl, home or page_on_front changed.
*
* @since 2.1.0
*
* @param string $old_value
* @param string $value
*/
function update_home_siteurl( $old_value, $value ) {
if ( wp_installing() ) {
return;
}
if ( is_multisite() && ms_is_switched() ) {
delete_option( 'rewrite_rules' );
} else {
flush_rewrite_rules();
}
}
/**
* Resets global variables based on $_GET and $_POST
*
* This function resets global variables based on the names passed
* in the $vars array to the value of $_POST[$var] or $_GET[$var] or ''
* if neither is defined.
*
* @since 2.0.0
*
* @param array $vars An array of globals to reset.
*/
function wp_reset_vars( $vars ) {
foreach ( $vars as $var ) {
if ( empty( $_POST[ $var ] ) ) {
if ( empty( $_GET[ $var ] ) ) {
$GLOBALS[ $var ] = '';
} else {
$GLOBALS[ $var ] = $_GET[ $var ];
}
} else {
$GLOBALS[ $var ] = $_POST[ $var ];
}
}
}
/**
* Displays the given administration message.
*
* @since 2.1.0
*
* @param string|WP_Error $message
*/
function show_message( $message ) {
if ( is_wp_error( $message ) ) {
if ( $message->get_error_data() && is_string( $message->get_error_data() ) ) {
$message = $message->get_error_message() . ': ' . $message->get_error_data();
} else {
$message = $message->get_error_message();
}
}
echo "<p>$message</p>\n";
wp_ob_end_flush_all();
flush();
}
/**
* @since 2.8.0
*
* @param string $content
* @return array
*/
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 );
$count = count( $tokens );
$functions = array();
$ignore_functions = array();
for ( $t = 0; $t < $count - 2; $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' ), true ) )
|| ( 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 );
/**
* Filters the list of functions and classes to be ignored from the documentation lookup.
*
* @since 2.8.0
*
* @param string[] $ignore_functions Array of names of functions and classes to be ignored.
*/
$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, true ) ) {
continue;
}
$out[] = $function;
}
return $out;
}
/**
* Saves option for number of rows when listing posts, pages, comments, etc.
*
* @since 2.8.0
*/
function set_screen_options() {
if ( isset( $_POST['wp_screen_options'] ) && is_array( $_POST['wp_screen_options'] ) ) {
check_admin_referer( 'screen-options-nonce', 'screenoptionnonce' );
$user = wp_get_current_user();
if ( ! $user ) {
return;
}
$option = $_POST['wp_screen_options']['option'];
$value = $_POST['wp_screen_options']['value'];
if ( sanitize_key( $option ) != $option ) {
return;
}
$map_option = $option;
$type = str_replace( 'edit_', '', $map_option );
$type = str_replace( '_per_page', '', $type );
if ( in_array( $type, get_taxonomies(), true ) ) {
$map_option = 'edit_tags_per_page';
} elseif ( in_array( $type, get_post_types(), true ) ) {
$map_option = 'edit_per_page';
} else {
$option = str_replace( '-', '_', $option );
}
switch ( $map_option ) {
case 'edit_per_page':
case 'users_per_page':
case 'edit_comments_per_page':
case 'upload_per_page':
case 'edit_tags_per_page':
case 'plugins_per_page':
case 'export_personal_data_requests_per_page':
case 'remove_personal_data_requests_per_page':
// Network admin.
case 'sites_network_per_page':
case 'users_network_per_page':
case 'site_users_network_per_page':
case 'plugins_network_per_page':
case 'themes_network_per_page':
case 'site_themes_network_per_page':
$value = (int) $value;
if ( $value < 1 || $value > 999 ) {
return;
}
break;
default:
$screen_option = false;
if ( '_page' === substr( $option, -5 ) || 'layout_columns' === $option ) {
/**
* Filters a screen option value before it is set.
*
* The filter can also be used to modify non-standard [items]_per_page
* settings. See the parent function for a full list of standard options.
*
* Returning false from the filter will skip saving the current option.
*
* @since 2.8.0
* @since 5.4.2 Only applied to options ending with '_page',
* or the 'layout_columns' option.
*
* @see set_screen_options()
*
* @param mixed $screen_option The value to save instead of the option value.
* Default false (to skip saving the current option).
* @param string $option The option name.
* @param int $value The option value.
*/
$screen_option = apply_filters( 'set-screen-option', $screen_option, $option, $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
}
/**
* Filters a screen option value before it is set.
*
* The dynamic portion of the hook, `$option`, refers to the option name.
*
* Returning false from the filter will skip saving the current option.
*
* @since 5.4.2
*
* @see set_screen_options()
*
* @param mixed $screen_option The value to save instead of the option value.
* Default false (to skip saving the current option).
* @param string $option The option name.
* @param int $value The option value.
*/
$value = apply_filters( "set_screen_option_{$option}", $screen_option, $option, $value );
if ( false === $value ) {
return;
}
break;
}
update_user_meta( $user->ID, $option, $value );
$url = remove_query_arg( array( 'pagenum', 'apage', 'paged' ), wp_get_referer() );
if ( isset( $_POST['mode'] ) ) {
$url = add_query_arg( array( 'mode' => $_POST['mode'] ), $url );
}
wp_safe_redirect( $url );
exit;
}
}
/**
* 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', false ) ) {
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[starts-with(@name,\'wordpress\')] | /configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'WordPress\')]' );
if ( 0 == $rules->length ) {
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', false ) ) {
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[starts-with(@name,\'wordpress\')] | /configuration/system.webServer/rewrite/rules/rule[starts-with(@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', false ) ) {
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[starts-with(@name,\'wordpress\')] | /configuration/system.webServer/rewrite/rules/rule[starts-with(@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 ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
$config = $doc->saveXML();
$config = preg_replace( "/([^\r])\n/", "$1\r\n", $config );
$fp = fopen( $filename, 'w' );
fwrite( $fp, $config );
fclose( $fp );
}
/**
* Display the default admin color scheme picker (Used in user-edit.php)
*
* @since 3.0.0
*
* @global array $_wp_admin_css_colors
*
* @param int $user_id User ID.
*/
function admin_color_scheme_picker( $user_id ) {
global $_wp_admin_css_colors;
ksort( $_wp_admin_css_colors );
if ( isset( $_wp_admin_css_colors['fresh'] ) ) {
// Set Default ('fresh') and Light should go first.
$_wp_admin_css_colors = array_filter(
array_merge(
array(
'fresh' => '',
'light' => '',
'modern' => '',
),
$_wp_admin_css_colors
)
);
}
$current_color = get_user_option( 'admin_color', $user_id );
if ( empty( $current_color ) || ! isset( $_wp_admin_css_colors[ $current_color ] ) ) {
$current_color = 'fresh';
}
?>
<fieldset id="color-picker" class="scheme-list">
<legend class="screen-reader-text"><span><?php _e( 'Admin Color Scheme' ); ?></span></legend>
<?php
wp_nonce_field( 'save-color-scheme', 'color-nonce', false );
foreach ( $_wp_admin_css_colors as $color => $color_info ) :
?>
<div class="color-option <?php echo ( $color == $current_color ) ? 'selected' : ''; ?>">
<input name="admin_color" id="admin_color_<?php echo esc_attr( $color ); ?>" type="radio" value="<?php echo esc_attr( $color ); ?>" class="tog" <?php checked( $color, $current_color ); ?> />
<input type="hidden" class="css_url" value="<?php echo esc_url( $color_info->url ); ?>" />
<input type="hidden" class="icon_colors" value="<?php echo esc_attr( wp_json_encode( array( 'icons' => $color_info->icon_colors ) ) ); ?>" />
<label for="admin_color_<?php echo esc_attr( $color ); ?>"><?php echo esc_html( $color_info->name ); ?></label>
<table class="color-palette">
<tr>
<?php
foreach ( $color_info->colors as $html_color ) {
?>
<td style="background-color: <?php echo esc_attr( $html_color ); ?>">&nbsp;</td>
<?php
}
?>
</tr>
</table>
</div>
<?php
endforeach;
?>
</fieldset>
<?php
}
/**
*
* @global array $_wp_admin_css_colors
*/
function wp_color_scheme_settings() {
global $_wp_admin_css_colors;
$color_scheme = get_user_option( 'admin_color' );
// It's possible to have a color scheme set that is no longer registered.
if ( empty( $_wp_admin_css_colors[ $color_scheme ] ) ) {
$color_scheme = 'fresh';
}
if ( ! empty( $_wp_admin_css_colors[ $color_scheme ]->icon_colors ) ) {
$icon_colors = $_wp_admin_css_colors[ $color_scheme ]->icon_colors;
} elseif ( ! empty( $_wp_admin_css_colors['fresh']->icon_colors ) ) {
$icon_colors = $_wp_admin_css_colors['fresh']->icon_colors;
} else {
// Fall back to the default set of icon colors if the default scheme is missing.
$icon_colors = array(
'base' => '#a7aaad',
'focus' => '#72aee6',
'current' => '#fff',
);
}
echo '<script type="text/javascript">var _wpColorScheme = ' . wp_json_encode( array( 'icons' => $icon_colors ) ) . ";</script>\n";
}
/**
* Displays the viewport meta in the admin.
*
* @since 5.5.0
*/
function wp_admin_viewport_meta() {
/**
* Filters the viewport meta in the admin.
*
* @since 5.5.0
*
* @param string $viewport_meta The viewport meta.
*/
$viewport_meta = apply_filters( 'admin_viewport_meta', 'width=device-width,initial-scale=1.0' );
if ( empty( $viewport_meta ) ) {
return;
}
echo '<meta name="viewport" content="' . esc_attr( $viewport_meta ) . '">';
}
/**
* Adds viewport meta for mobile in Customizer.
*
* Hooked to the {@see 'admin_viewport_meta'} filter.
*
* @since 5.5.0
*
* @param string $viewport_meta The viewport meta.
* @return string Filtered viewport meta.
*/
function _customizer_mobile_viewport_meta( $viewport_meta ) {
return trim( $viewport_meta, ',' ) . ',minimum-scale=0.5,maximum-scale=1.2';
}
/**
* Check lock status for posts displayed on the Posts screen
*
* @since 3.6.0
*
* @param array $response The Heartbeat response.
* @param array $data The $_POST data sent.
* @param string $screen_id The screen ID.
* @return array The Heartbeat response.
*/
function wp_check_locked_posts( $response, $data, $screen_id ) {
$checked = array();
if ( array_key_exists( 'wp-check-locked-posts', $data ) && is_array( $data['wp-check-locked-posts'] ) ) {
foreach ( $data['wp-check-locked-posts'] as $key ) {
$post_id = absint( substr( $key, 5 ) );
if ( ! $post_id ) {
continue;
}
$user_id = wp_check_post_lock( $post_id );
if ( $user_id ) {
$user = get_userdata( $user_id );
if ( $user && current_user_can( 'edit_post', $post_id ) ) {
$send = array(
/* translators: %s: User's display name. */
'text' => sprintf( __( '%s is currently editing' ), $user->display_name ),
);
if ( get_option( 'show_avatars' ) ) {
$send['avatar_src'] = get_avatar_url( $user->ID, array( 'size' => 18 ) );
$send['avatar_src_2x'] = get_avatar_url( $user->ID, array( 'size' => 36 ) );
}
$checked[ $key ] = $send;
}
}
}
}
if ( ! empty( $checked ) ) {
$response['wp-check-locked-posts'] = $checked;
}
return $response;
}
/**
* Check lock status on the New/Edit Post screen and refresh the lock
*
* @since 3.6.0
*
* @param array $response The Heartbeat response.
* @param array $data The $_POST data sent.
* @param string $screen_id The screen ID.
* @return array The Heartbeat response.
*/
function wp_refresh_post_lock( $response, $data, $screen_id ) {
if ( array_key_exists( 'wp-refresh-post-lock', $data ) ) {
$received = $data['wp-refresh-post-lock'];
$send = array();
$post_id = absint( $received['post_id'] );
if ( ! $post_id ) {
return $response;
}
if ( ! current_user_can( 'edit_post', $post_id ) ) {
return $response;
}
$user_id = wp_check_post_lock( $post_id );
$user = get_userdata( $user_id );
if ( $user ) {
$error = array(
/* translators: %s: User's display name. */
'text' => sprintf( __( '%s has taken over and is currently editing.' ), $user->display_name ),
);
if ( get_option( 'show_avatars' ) ) {
$error['avatar_src'] = get_avatar_url( $user->ID, array( 'size' => 64 ) );
$error['avatar_src_2x'] = get_avatar_url( $user->ID, array( 'size' => 128 ) );
}
$send['lock_error'] = $error;
} else {
$new_lock = wp_set_post_lock( $post_id );
if ( $new_lock ) {
$send['new_lock'] = implode( ':', $new_lock );
}
}
$response['wp-refresh-post-lock'] = $send;
}
return $response;
}
/**
* Check nonce expiration on the New/Edit Post screen and refresh if needed
*
* @since 3.6.0
*
* @param array $response The Heartbeat response.
* @param array $data The $_POST data sent.
* @param string $screen_id The screen ID.
* @return array The Heartbeat response.
*/
function wp_refresh_post_nonces( $response, $data, $screen_id ) {
if ( array_key_exists( 'wp-refresh-post-nonces', $data ) ) {
$received = $data['wp-refresh-post-nonces'];
$response['wp-refresh-post-nonces'] = array( 'check' => 1 );
$post_id = absint( $received['post_id'] );
if ( ! $post_id ) {
return $response;
}
if ( ! current_user_can( 'edit_post', $post_id ) ) {
return $response;
}
$response['wp-refresh-post-nonces'] = array(
'replace' => array(
'getpermalinknonce' => wp_create_nonce( 'getpermalink' ),
'samplepermalinknonce' => wp_create_nonce( 'samplepermalink' ),
'closedpostboxesnonce' => wp_create_nonce( 'closedpostboxes' ),
'_ajax_linking_nonce' => wp_create_nonce( 'internal-linking' ),
'_wpnonce' => wp_create_nonce( 'update-post_' . $post_id ),
),
);
}
return $response;
}
/**
* Add the latest Heartbeat and REST-API nonce to the Heartbeat response.
*
* @since 5.0.0
*
* @param array $response The Heartbeat response.
* @return array The Heartbeat response.
*/
function wp_refresh_heartbeat_nonces( $response ) {
// Refresh the Rest API nonce.
$response['rest_nonce'] = wp_create_nonce( 'wp_rest' );
// Refresh the Heartbeat nonce.
$response['heartbeat_nonce'] = wp_create_nonce( 'heartbeat-nonce' );
return $response;
}
/**
* Disable suspension of Heartbeat on the Add/Edit Post screens.
*
* @since 3.8.0
*
* @global string $pagenow
*
* @param array $settings An array of Heartbeat settings.
* @return array Filtered Heartbeat settings.
*/
function wp_heartbeat_set_suspension( $settings ) {
global $pagenow;
if ( 'post.php' === $pagenow || 'post-new.php' === $pagenow ) {
$settings['suspension'] = 'disable';
}
return $settings;
}
/**
* Autosave with heartbeat
*
* @since 3.9.0
*
* @param array $response The Heartbeat response.
* @param array $data The $_POST data sent.
* @return array The Heartbeat response.
*/
function heartbeat_autosave( $response, $data ) {
if ( ! empty( $data['wp_autosave'] ) ) {
$saved = wp_autosave( $data['wp_autosave'] );
if ( is_wp_error( $saved ) ) {
$response['wp_autosave'] = array(
'success' => false,
'message' => $saved->get_error_message(),
);
} elseif ( empty( $saved ) ) {
$response['wp_autosave'] = array(
'success' => false,
'message' => __( 'Error while saving.' ),
);
} else {
/* translators: Draft saved date format, see https://www.php.net/manual/datetime.format.php */
$draft_saved_date_format = __( 'g:i:s a' );
$response['wp_autosave'] = array(
'success' => true,
/* translators: %s: Date and time. */
'message' => sprintf( __( 'Draft saved at %s.' ), date_i18n( $draft_saved_date_format ) ),
);
}
}
return $response;
}
/**
* Remove single-use URL parameters and create canonical link based on new URL.
*
* Remove specific query string parameters from a URL, create the canonical link,
* put it in the admin header, and change the current URL to match.
*
* @since 4.2.0
*/
function wp_admin_canonical_url() {
$removable_query_args = wp_removable_query_args();
if ( empty( $removable_query_args ) ) {
return;
}
// Ensure we're using an absolute URL.
$current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
$filtered_url = remove_query_arg( $removable_query_args, $current_url );
?>
<link id="wp-admin-canonical" rel="canonical" href="<?php echo esc_url( $filtered_url ); ?>" />
<script>
if ( window.history.replaceState ) {
window.history.replaceState( null, null, document.getElementById( 'wp-admin-canonical' ).href + window.location.hash );
}
</script>
<?php
}
/**
* Send a referrer policy header so referrers are not sent externally from administration screens.
*
* @since 4.9.0
*/
function wp_admin_headers() {
$policy = 'strict-origin-when-cross-origin';
/**
* Filters the admin referrer policy header value.
*
* @since 4.9.0
* @since 4.9.5 The default value was changed to 'strict-origin-when-cross-origin'.
*
* @link https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy
*
* @param string $policy The admin referrer policy header value. Default 'strict-origin-when-cross-origin'.
*/
$policy = apply_filters( 'admin_referrer_policy', $policy );
header( sprintf( 'Referrer-Policy: %s', $policy ) );
}
/**
* Outputs JS that reloads the page if the user navigated to it with the Back or Forward button.
*
* Used on the Edit Post and Add New Post screens. Needed to ensure the page is not loaded from browser cache,
* so the post title and editor content are the last saved versions. Ideally this script should run first in the head.
*
* @since 4.6.0
*/
function wp_page_reload_on_back_button_js() {
?>
<script>
if ( typeof performance !== 'undefined' && performance.navigation && performance.navigation.type === 2 ) {
document.location.reload( true );
}
</script>
<?php
}
/**
* Send a confirmation request email when a change of site admin email address is attempted.
*
* The new site admin address will not become active until confirmed.
*
* @since 3.0.0
* @since 4.9.0 This function was moved from wp-admin/includes/ms.php so it's no longer Multisite specific.
*
* @param string $old_value The old site admin email address.
* @param string $value The proposed new site admin email address.
*/
function update_option_new_admin_email( $old_value, $value ) {
if ( get_option( 'admin_email' ) === $value || ! is_email( $value ) ) {
return;
}
$hash = md5( $value . time() . wp_rand() );
$new_admin_email = array(
'hash' => $hash,
'newemail' => $value,
);
update_option( 'adminhash', $new_admin_email );
$switched_locale = switch_to_locale( get_user_locale() );
/* translators: Do not translate USERNAME, ADMIN_URL, EMAIL, SITENAME, SITEURL: those are placeholders. */
$email_text = __(
'Howdy ###USERNAME###,
You recently requested to have the administration email address on
your site changed.
If this is correct, please click on the following link to change it:
###ADMIN_URL###
You can safely ignore and delete this email if you do not want to
take this action.
This email has been sent to ###EMAIL###
Regards,
All at ###SITENAME###
###SITEURL###'
);
/**
* Filters the text of the email sent when a change of site admin email address is attempted.
*
* The following strings have a special meaning and will get replaced dynamically:
* ###USERNAME### The current user's username.
* ###ADMIN_URL### The link to click on to confirm the email change.
* ###EMAIL### The proposed new site admin email address.
* ###SITENAME### The name of the site.
* ###SITEURL### The URL to the site.
*
* @since MU (3.0.0)
* @since 4.9.0 This filter is no longer Multisite specific.
*
* @param string $email_text Text in the email.
* @param array $new_admin_email {
* Data relating to the new site admin email address.
*
* @type string $hash The secure hash used in the confirmation link URL.
* @type string $newemail The proposed new site admin email address.
* }
*/
$content = apply_filters( 'new_admin_email_content', $email_text, $new_admin_email );
$current_user = wp_get_current_user();
$content = str_replace( '###USERNAME###', $current_user->user_login, $content );
$content = str_replace( '###ADMIN_URL###', esc_url( self_admin_url( 'options.php?adminhash=' . $hash ) ), $content );
$content = str_replace( '###EMAIL###', $value, $content );
$content = str_replace( '###SITENAME###', wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ), $content );
$content = str_replace( '###SITEURL###', home_url(), $content );
wp_mail(
$value,
sprintf(
/* translators: New admin email address notification email subject. %s: Site title. */
__( '[%s] New Admin Email Address' ),
wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES )
),
$content
);
if ( $switched_locale ) {
restore_previous_locale();
}
}
/**
* Appends '(Draft)' to draft page titles in the privacy page dropdown
* so that unpublished content is obvious.
*
* @since 4.9.8
* @access private
*
* @param string $title Page title.
* @param WP_Post $page Page data object.
* @return string Page title.
*/
function _wp_privacy_settings_filter_draft_page_titles( $title, $page ) {
if ( 'draft' === $page->post_status && 'privacy' === get_current_screen()->id ) {
/* translators: %s: Page title. */
$title = sprintf( __( '%s (Draft)' ), $title );
}
return $title;
}
/**
* Checks if the user needs to update PHP.
*
* @since 5.1.0
* @since 5.1.1 Added the {@see 'wp_is_php_version_acceptable'} filter.
*
* @return array|false Array of PHP version data. False on failure.
*/
function wp_check_php_version() {
$version = phpversion();
$key = md5( $version );
$response = get_site_transient( 'php_check_' . $key );
if ( false === $response ) {
$url = 'http://api.wordpress.org/core/serve-happy/1.0/';
if ( wp_http_supports( array( 'ssl' ) ) ) {
$url = set_url_scheme( $url, 'https' );
}
$url = add_query_arg( 'php_version', $version, $url );
$response = wp_remote_get( $url );
if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
return false;
}
/**
* Response should be an array with:
* 'recommended_version' - string - The PHP version recommended by WordPress.
* 'is_supported' - boolean - Whether the PHP version is actively supported.
* 'is_secure' - boolean - Whether the PHP version receives security updates.
* 'is_acceptable' - boolean - Whether the PHP version is still acceptable for WordPress.
*/
$response = json_decode( wp_remote_retrieve_body( $response ), true );
if ( ! is_array( $response ) ) {
return false;
}
set_site_transient( 'php_check_' . $key, $response, WEEK_IN_SECONDS );
}
if ( isset( $response['is_acceptable'] ) && $response['is_acceptable'] ) {
/**
* Filters whether the active PHP version is considered acceptable by WordPress.
*
* Returning false will trigger a PHP version warning to show up in the admin dashboard to administrators.
*
* This filter is only run if the wordpress.org Serve Happy API considers the PHP version acceptable, ensuring
* that this filter can only make this check stricter, but not loosen it.
*
* @since 5.1.1
*
* @param bool $is_acceptable Whether the PHP version is considered acceptable. Default true.
* @param string $version PHP version checked.
*/
$response['is_acceptable'] = (bool) apply_filters( 'wp_is_php_version_acceptable', true, $version );
}
return $response;
}