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< ? php
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/**
* WordPress Plugin Administration API
*
* @ package WordPress
* @ subpackage Administration
*/
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/**
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* Parse the plugin contents to retrieve plugin ' s metadata .
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*
* The metadata of the plugin 's data searches for the following in the plugin' s
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* header . All plugin data must be on its own line . For plugin description , it
* must not have any newlines or only parts of the description will be displayed
* and the same goes for the plugin data . The below is formatted for printing .
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*
* < code >
* /*
* Plugin Name : Name of Plugin
* Plugin URI : Link to plugin information
* Description : Plugin Description
* Author : Plugin author ' s name
* Author URI : Link to the author ' s web site
* Version : Must be set in the plugin for WordPress 2.3 +
* Text Domain : Optional . Unique identifier , should be same as the one used in
* plugin_text_domain ()
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* Domain Path : Optional . Only useful if the translations are located in a
* folder above the plugin ' s base path . For example , if . mo files are
* located in the locale folder then Domain Path will be " /locale/ " and
* must have the first slash . Defaults to the base folder the plugin is
* located in .
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* * / # Remove the space to close comment
* </ code >
*
* Plugin data returned array contains the following :
* 'Name' - Name of the plugin , must be unique .
* 'Title' - Title of the plugin and the link to the plugin ' s web site .
* 'Description' - Description of what the plugin does and / or notes
* from the author .
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* 'Author' - The author ' s name
* 'AuthorURI' - The authors web site address .
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* 'Version' - The plugin version number .
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* 'PluginURI' - Plugin web site address .
* 'TextDomain' - Plugin ' s text domain for localization .
* 'DomainPath' - Plugin ' s relative directory path to . mo files .
*
* Some users have issues with opening large files and manipulating the contents
* for want is usually the first 1 kiB or 2 kiB . This function stops pulling in
* the plugin contents when it has all of the required plugin data .
*
* The first 8 kiB of the file will be pulled in and if the plugin data is not
* within that first 8 kiB , then the plugin author should correct their plugin
* and move the plugin data headers to the top .
*
* The plugin file is assumed to have permissions to allow for scripts to read
* the file . This is not checked however and the file is only opened for
* reading .
*
* @ link http :// trac . wordpress . org / ticket / 5651 Previous Optimizations .
* @ link http :// trac . wordpress . org / ticket / 7372 Further and better Optimizations .
* @ since 1.5 . 0
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*
* @ param string $plugin_file Path to the plugin file
* @ return array See above for description .
*/
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function get_plugin_data ( $plugin_file ) {
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// We don't need to write to the file, so just open for reading.
$fp = fopen ( $plugin_file , 'r' );
// Pull only the first 8kiB of the file in.
$plugin_data = fread ( $fp , 8192 );
// PHP will close file handle, but we are good citizens.
fclose ( $fp );
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preg_match ( '|Plugin Name:(.*)$|mi' , $plugin_data , $name );
preg_match ( '|Plugin URI:(.*)$|mi' , $plugin_data , $uri );
preg_match ( '|Version:(.*)|i' , $plugin_data , $version );
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preg_match ( '|Description:(.*)$|mi' , $plugin_data , $description );
preg_match ( '|Author:(.*)$|mi' , $plugin_data , $author_name );
preg_match ( '|Author URI:(.*)$|mi' , $plugin_data , $author_uri );
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preg_match ( '|Text Domain:(.*)$|mi' , $plugin_data , $text_domain );
preg_match ( '|Domain Path:(.*)$|mi' , $plugin_data , $domain_path );
foreach ( array ( 'name' , 'uri' , 'version' , 'description' , 'author_name' , 'author_uri' , 'text_domain' , 'domain_path' ) as $field ) {
if ( ! empty ( ${$field} ) )
${$field} = trim ( ${$field} [ 1 ]);
else
${$field} = '' ;
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}
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return array (
'Name' => $name , 'PluginURI' => $uri , 'Description' => $description ,
'Author' => $author_name , 'AuthorURI' => $author_uri , 'Version' => $version ,
'TextDomain' => $text_domain , 'DomainPath' => $domain_path
);
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}
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function get_plugins ( $plugin_folder = '' ) {
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if ( ! $cache_plugins = wp_cache_get ( 'plugins' , 'plugins' ) )
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$cache_plugins = array ();
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if ( isset ( $cache_plugins [ $plugin_folder ]) )
return $cache_plugins [ $plugin_folder ];
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$wp_plugins = array ();
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$plugin_root = WP_PLUGIN_DIR ;
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if ( ! empty ( $plugin_folder ) )
$plugin_root .= $plugin_folder ;
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// Files in wp-content/plugins directory
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$plugins_dir = @ opendir ( $plugin_root );
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if ( $plugins_dir ) {
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while (( $file = readdir ( $plugins_dir ) ) !== false ) {
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if ( substr ( $file , 0 , 1 ) == '.' )
continue ;
if ( is_dir ( $plugin_root . '/' . $file ) ) {
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$plugins_subdir = @ opendir ( $plugin_root . '/' . $file );
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if ( $plugins_subdir ) {
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while (( $subfile = readdir ( $plugins_subdir ) ) !== false ) {
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if ( substr ( $subfile , 0 , 1 ) == '.' )
continue ;
if ( substr ( $subfile , - 4 ) == '.php' )
$plugin_files [] = " $file / $subfile " ;
}
}
} else {
if ( substr ( $file , - 4 ) == '.php' )
$plugin_files [] = $file ;
}
}
}
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@ closedir ( $plugins_dir );
@ closedir ( $plugins_subdir );
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if ( ! $plugins_dir || ! $plugin_files )
return $wp_plugins ;
foreach ( $plugin_files as $plugin_file ) {
if ( ! is_readable ( " $plugin_root / $plugin_file " ) )
continue ;
$plugin_data = get_plugin_data ( " $plugin_root / $plugin_file " );
if ( empty ( $plugin_data [ 'Name' ] ) )
continue ;
$wp_plugins [ plugin_basename ( $plugin_file )] = $plugin_data ;
}
uasort ( $wp_plugins , create_function ( '$a, $b' , 'return strnatcasecmp( $a["Name"], $b["Name"] );' ));
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$cache_plugins [ $plugin_folder ] = $wp_plugins ;
wp_cache_set ( 'plugins' , $cache_plugins , 'plugins' );
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return $wp_plugins ;
}
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function is_plugin_active ( $plugin ){
return in_array ( $plugin , get_option ( 'active_plugins' ));
}
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function activate_plugin ( $plugin , $redirect = '' ) {
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$current = get_option ( 'active_plugins' );
$plugin = trim ( $plugin );
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$valid = validate_plugin ( $plugin );
if ( is_wp_error ( $valid ) )
return $valid ;
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if ( ! in_array ( $plugin , $current ) ) {
if ( ! empty ( $redirect ) )
wp_redirect ( add_query_arg ( '_error_nonce' , wp_create_nonce ( 'plugin-activation-error_' . $plugin ), $redirect )); // we'll override this later if the plugin can be included without fatal error
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ob_start ();
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@ include ( WP_PLUGIN_DIR . '/' . $plugin );
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$current [] = $plugin ;
sort ( $current );
update_option ( 'active_plugins' , $current );
do_action ( 'activate_' . $plugin );
ob_end_clean ();
}
return null ;
}
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function deactivate_plugins ( $plugins , $silent = false ) {
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$current = get_option ( 'active_plugins' );
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if ( ! is_array ( $plugins ) )
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$plugins = array ( $plugins );
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foreach ( $plugins as $plugin ) {
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if ( ! is_plugin_active ( $plugin ) )
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continue ;
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array_splice ( $current , array_search ( $plugin , $current ), 1 ); // Fixed Array-fu!
if ( ! $silent ) //Used by Plugin updater to internally deactivate plugin, however, not to notify plugins of the fact to prevent plugin output.
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do_action ( 'deactivate_' . trim ( $plugin ));
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}
update_option ( 'active_plugins' , $current );
}
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function activate_plugins ( $plugins , $redirect = '' ) {
if ( ! is_array ( $plugins ) )
$plugins = array ( $plugins );
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$errors = array ();
foreach ( ( array ) $plugins as $plugin ) {
if ( ! empty ( $redirect ) )
$redirect = add_query_arg ( 'plugin' , $plugin , $redirect );
$result = activate_plugin ( $plugin , $redirect );
if ( is_wp_error ( $result ) )
$errors [ $plugin ] = $result ;
}
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if ( ! empty ( $errors ) )
return new WP_Error ( 'plugins_invalid' , __ ( 'One of the plugins is invalid.' ), $errors );
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return true ;
}
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function delete_plugins ( $plugins , $redirect = '' ) {
global $wp_filesystem ;
if ( empty ( $plugins ) )
return false ;
$checked = array ();
foreach ( $plugins as $plugin )
$checked [] = 'checked[]=' . $plugin ;
ob_start ();
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$url = wp_nonce_url ( 'plugins.php?action=delete-selected&verify-delete=1&' . implode ( '&' , $checked ), 'bulk-manage-plugins' );
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if ( false === ( $credentials = request_filesystem_credentials ( $url )) ) {
$data = ob_get_contents ();
ob_end_clean ();
if ( ! empty ( $data ) ){
include_once ( ABSPATH . 'wp-admin/admin-header.php' );
echo $data ;
include ( ABSPATH . 'wp-admin/admin-footer.php' );
exit ;
}
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return ;
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}
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if ( ! WP_Filesystem ( $credentials ) ) {
request_filesystem_credentials ( $url , '' , true ); //Failed to connect, Error and request again
$data = ob_get_contents ();
ob_end_clean ();
if ( ! empty ( $data ) ){
include_once ( ABSPATH . 'wp-admin/admin-header.php' );
echo $data ;
include ( ABSPATH . 'wp-admin/admin-footer.php' );
exit ;
}
return ;
}
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if ( $wp_filesystem -> errors -> get_error_code () ) {
return $wp_filesystem -> errors ;
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}
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if ( ! is_object ( $wp_filesystem ) )
return new WP_Error ( 'fs_unavailable' , __ ( 'Could not access filesystem.' ));
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if ( $wp_filesystem -> errors -> get_error_code () )
return new WP_Error ( 'fs_error' , __ ( 'Filesystem error' ), $wp_filesystem -> errors );
//Get the base plugin folder
$plugins_dir = $wp_filesystem -> wp_plugins_dir ();
if ( empty ( $plugins_dir ) )
return new WP_Error ( 'fs_no_plugins_dir' , __ ( 'Unable to locate WordPress Plugin directory.' ));
$plugins_dir = trailingslashit ( $plugins_dir );
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$errors = array ();
foreach ( $plugins as $plugin_file ) {
$this_plugin_dir = trailingslashit ( dirname ( $plugins_dir . $plugin_file ) );
// If plugin is in its own directory, recursively delete the directory.
if ( strpos ( $plugin_file , '/' ) && $this_plugin_dir != $plugins_dir ) //base check on if plugin includes directory seperator AND that its not the root plugin folder
$deleted = $wp_filesystem -> delete ( $this_plugin_dir , true );
else
$deleted = $wp_filesystem -> delete ( $plugins_dir . $plugin_file );
if ( ! $deleted )
$errors [] = $plugin_file ;
}
if ( ! empty ( $errors ) )
return new WP_Error ( 'could_not_remove_plugin' , sprintf ( __ ( 'Could not fully remove the plugin(s) %s' ), implode ( ', ' , $errors )) );
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return true ;
}
function validate_active_plugins () {
$check_plugins = get_option ( 'active_plugins' );
// Sanity check. If the active plugin list is not an array, make it an
// empty array.
if ( ! is_array ( $check_plugins ) ) {
update_option ( 'active_plugins' , array ());
return ;
}
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//Invalid is any plugin that is deactivated due to error.
$invalid = array ();
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// If a plugin file does not exist, remove it from the list of active
// plugins.
foreach ( $check_plugins as $check_plugin ) {
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$result = validate_plugin ( $check_plugin );
if ( is_wp_error ( $result ) ) {
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$invalid [ $check_plugin ] = $result ;
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deactivate_plugins ( $check_plugin , true );
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}
}
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return $invalid ;
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}
function validate_plugin ( $plugin ) {
if ( validate_file ( $plugin ) )
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return new WP_Error ( ' plugin_invalid ', __(' Invalid plugin path . ' ));
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if ( ! file_exists ( WP_PLUGIN_DIR . '/' . $plugin ) )
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return new WP_Error ( 'plugin_not_found' , __ ( 'Plugin file does not exist.' ));
return 0 ;
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}
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//
// Menu
//
function add_menu_page ( $page_title , $menu_title , $access_level , $file , $function = '' ) {
global $menu , $admin_page_hooks ;
$file = plugin_basename ( $file );
$menu [] = array ( $menu_title , $access_level , $file , $page_title );
$admin_page_hooks [ $file ] = sanitize_title ( $menu_title );
$hookname = get_plugin_page_hookname ( $file , '' );
if ( ! empty ( $function ) && ! empty ( $hookname ))
add_action ( $hookname , $function );
return $hookname ;
}
function add_submenu_page ( $parent , $page_title , $menu_title , $access_level , $file , $function = '' ) {
global $submenu ;
global $menu ;
global $_wp_real_parent_file ;
global $_wp_submenu_nopriv ;
$file = plugin_basename ( $file );
$parent = plugin_basename ( $parent );
if ( isset ( $_wp_real_parent_file [ $parent ] ) )
$parent = $_wp_real_parent_file [ $parent ];
if ( ! current_user_can ( $access_level ) ) {
$_wp_submenu_nopriv [ $parent ][ $file ] = true ;
return false ;
}
// If the parent doesn't already have a submenu, add a link to the parent
// as the first item in the submenu. If the submenu file is the same as the
// parent file someone is trying to link back to the parent manually. In
// this case, don't automatically add a link back to avoid duplication.
if ( ! isset ( $submenu [ $parent ] ) && $file != $parent ) {
foreach ( $menu as $parent_menu ) {
if ( $parent_menu [ 2 ] == $parent && current_user_can ( $parent_menu [ 1 ] ) )
$submenu [ $parent ][] = $parent_menu ;
}
}
$submenu [ $parent ][] = array ( $menu_title , $access_level , $file , $page_title );
$hookname = get_plugin_page_hookname ( $file , $parent );
if ( ! empty ( $function ) && ! empty ( $hookname ))
add_action ( $hookname , $function );
return $hookname ;
}
function add_management_page ( $page_title , $menu_title , $access_level , $file , $function = '' ) {
return add_submenu_page ( 'edit.php' , $page_title , $menu_title , $access_level , $file , $function );
}
function add_options_page ( $page_title , $menu_title , $access_level , $file , $function = '' ) {
return add_submenu_page ( 'options-general.php' , $page_title , $menu_title , $access_level , $file , $function );
}
function add_theme_page ( $page_title , $menu_title , $access_level , $file , $function = '' ) {
return add_submenu_page ( 'themes.php' , $page_title , $menu_title , $access_level , $file , $function );
}
function add_users_page ( $page_title , $menu_title , $access_level , $file , $function = '' ) {
if ( current_user_can ( 'edit_users' ) )
$parent = 'users.php' ;
else
$parent = 'profile.php' ;
return add_submenu_page ( $parent , $page_title , $menu_title , $access_level , $file , $function );
}
//
// Pluggable Menu Support -- Private
//
function get_admin_page_parent () {
global $parent_file ;
global $menu ;
global $submenu ;
global $pagenow ;
global $plugin_page ;
global $_wp_real_parent_file ;
global $_wp_menu_nopriv ;
global $_wp_submenu_nopriv ;
if ( ! empty ( $parent_file ) ) {
if ( isset ( $_wp_real_parent_file [ $parent_file ] ) )
$parent_file = $_wp_real_parent_file [ $parent_file ];
return $parent_file ;
}
if ( $pagenow == 'admin.php' && isset ( $plugin_page ) ) {
foreach ( $menu as $parent_menu ) {
if ( $parent_menu [ 2 ] == $plugin_page ) {
$parent_file = $plugin_page ;
if ( isset ( $_wp_real_parent_file [ $parent_file ] ) )
$parent_file = $_wp_real_parent_file [ $parent_file ];
return $parent_file ;
}
}
if ( isset ( $_wp_menu_nopriv [ $plugin_page ] ) ) {
$parent_file = $plugin_page ;
if ( isset ( $_wp_real_parent_file [ $parent_file ] ) )
$parent_file = $_wp_real_parent_file [ $parent_file ];
return $parent_file ;
}
}
if ( isset ( $plugin_page ) && isset ( $_wp_submenu_nopriv [ $pagenow ][ $plugin_page ] ) ) {
$parent_file = $pagenow ;
if ( isset ( $_wp_real_parent_file [ $parent_file ] ) )
$parent_file = $_wp_real_parent_file [ $parent_file ];
return $parent_file ;
}
foreach ( array_keys ( $submenu ) as $parent ) {
foreach ( $submenu [ $parent ] as $submenu_array ) {
if ( isset ( $_wp_real_parent_file [ $parent ] ) )
$parent = $_wp_real_parent_file [ $parent ];
if ( $submenu_array [ 2 ] == $pagenow ) {
$parent_file = $parent ;
return $parent ;
} else
if ( isset ( $plugin_page ) && ( $plugin_page == $submenu_array [ 2 ] ) ) {
$parent_file = $parent ;
return $parent ;
}
}
}
$parent_file = '' ;
return '' ;
}
function get_admin_page_title () {
global $title ;
global $menu ;
global $submenu ;
global $pagenow ;
global $plugin_page ;
if ( isset ( $title ) && ! empty ( $title ) ) {
return $title ;
}
$hook = get_plugin_page_hook ( $plugin_page , $pagenow );
$parent = $parent1 = get_admin_page_parent ();
if ( empty ( $parent ) ) {
foreach ( $menu as $menu_array ) {
if ( isset ( $menu_array [ 3 ] ) ) {
if ( $menu_array [ 2 ] == $pagenow ) {
$title = $menu_array [ 3 ];
return $menu_array [ 3 ];
} else
if ( isset ( $plugin_page ) && ( $plugin_page == $menu_array [ 2 ] ) && ( $hook == $menu_array [ 3 ] ) ) {
$title = $menu_array [ 3 ];
return $menu_array [ 3 ];
}
} else {
$title = $menu_array [ 0 ];
return $title ;
}
}
} else {
foreach ( array_keys ( $submenu ) as $parent ) {
foreach ( $submenu [ $parent ] as $submenu_array ) {
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if ( isset ( $plugin_page ) &&
( $plugin_page == $submenu_array [ 2 ] ) &&
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(( $parent == $pagenow ) || ( $parent == $plugin_page ) || ( $plugin_page == $hook ) || (( $pagenow == 'admin.php' ) && ( $parent1 != $submenu_array [ 2 ] ) ) )
) {
$title = $submenu_array [ 3 ];
return $submenu_array [ 3 ];
}
if ( $submenu_array [ 2 ] != $pagenow || isset ( $_GET [ 'page' ] ) ) // not the current page
continue ;
if ( isset ( $submenu_array [ 3 ] ) ) {
$title = $submenu_array [ 3 ];
return $submenu_array [ 3 ];
} else {
$title = $submenu_array [ 0 ];
return $title ;
}
}
}
}
return $title ;
}
function get_plugin_page_hook ( $plugin_page , $parent_page ) {
$hook = get_plugin_page_hookname ( $plugin_page , $parent_page );
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if ( has_action ( $hook ) )
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return $hook ;
else
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return null ;
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}
function get_plugin_page_hookname ( $plugin_page , $parent_page ) {
global $admin_page_hooks ;
$parent = get_admin_page_parent ();
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$page_type = 'admin' ;
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if ( empty ( $parent_page ) || 'admin.php' == $parent_page ) {
if ( isset ( $admin_page_hooks [ $plugin_page ] ))
$page_type = 'toplevel' ;
else
if ( isset ( $admin_page_hooks [ $parent ] ))
$page_type = $admin_page_hooks [ $parent ];
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} else if ( isset ( $admin_page_hooks [ $parent_page ] ) ) {
$page_type = $admin_page_hooks [ $parent_page ];
}
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$plugin_name = preg_replace ( '!\.php!' , '' , $plugin_page );
return $page_type . '_page_' . $plugin_name ;
}
function user_can_access_admin_page () {
global $pagenow ;
global $menu ;
global $submenu ;
global $_wp_menu_nopriv ;
global $_wp_submenu_nopriv ;
global $plugin_page ;
$parent = get_admin_page_parent ();
if ( isset ( $_wp_submenu_nopriv [ $parent ][ $pagenow ] ) )
return false ;
if ( isset ( $plugin_page ) && isset ( $_wp_submenu_nopriv [ $parent ][ $plugin_page ] ) )
return false ;
if ( empty ( $parent ) ) {
if ( isset ( $_wp_menu_nopriv [ $pagenow ] ) )
return false ;
if ( isset ( $_wp_submenu_nopriv [ $pagenow ][ $pagenow ] ) )
return false ;
if ( isset ( $plugin_page ) && isset ( $_wp_submenu_nopriv [ $pagenow ][ $plugin_page ] ) )
return false ;
foreach ( array_keys ( $_wp_submenu_nopriv ) as $key ) {
if ( isset ( $_wp_submenu_nopriv [ $key ][ $pagenow ] ) )
return false ;
if ( isset ( $plugin_page ) && isset ( $_wp_submenu_nopriv [ $key ][ $plugin_page ] ) )
return false ;
}
return true ;
}
if ( isset ( $submenu [ $parent ] ) ) {
foreach ( $submenu [ $parent ] as $submenu_array ) {
if ( isset ( $plugin_page ) && ( $submenu_array [ 2 ] == $plugin_page ) ) {
if ( current_user_can ( $submenu_array [ 1 ] ))
return true ;
else
return false ;
} else if ( $submenu_array [ 2 ] == $pagenow ) {
if ( current_user_can ( $submenu_array [ 1 ] ))
return true ;
else
return false ;
}
}
}
foreach ( $menu as $menu_array ) {
if ( $menu_array [ 2 ] == $parent ) {
if ( current_user_can ( $menu_array [ 1 ] ))
return true ;
else
return false ;
}
}
return true ;
}
2007-07-15 19:59:05 +02:00
?>