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switch_to_blog() and restore_current_blog() housekeeping. 

wp-includes/admin-bar.php:

* Replace get_admin_url() and get_home_url() with admin_url() and home_url() and place them inside a switch/restore. Likewise replace current_user_can_for_blog() with current_user_can(). This avoids doing multiple switch restores.

wp-includes/ms-blogs.php:

* Deprecate the $validate argument to switch_to_blog(). This avoids a not very necessary call to get_blog_details(), possibly saving a few queries.
* Use $_wp_switched and $_wp_switched_stack instead of $switched and $switched_stack to make it less likely these globals will be stomped.
* Use GLOBALS to access blog_id and other globals. I've preferred this style lately since it makes it obvious a global is being used and avoids global blog_id being stomped by a local variable.
* Lose some is_object() checks. wp_get_current_user() always returns an object, for example.
* Call the new WP_Roles::reinit() method.

wp-includes/class-wp-xmlrpc-server.php:

* Replace current_user_can_for_blog() with current_user_can() and move it inside the switch/restore pair. This eliminates a switch/restore.

wp-includes/capabilities.php:

* Use array_keys() instead of $role => $data since $data is unused. I *think* this is a bit faster.
* Introduce WP_Roles::reinit(). This reinitializes WP_Roles and is used after switch_to_blog() has already update the blog ID in the wpdb object. If a global roles array is being used instead of the db, reinit is skipped.
* current_user_can_for_blog() now does a switch/restore. It didn't before meaning it could be reinitializing the user with the wrong role information for the current blog.

wp-includes/ms-settings.php:

* Define $_wp_switched_stack and $_wp_switched. This way switch_to_blog() and restore_current_blog() can rely on it being set.

wp-settings.php:

* Instantiate the WP_Roles global. This was it is always defined during init. To remove the WP_Roles checks from WP_Role and WP_User this would probably have to move before plugins are loaded, which might not be a good thing.

wp-includes/functions.php:

* Update wp_upload_dir() to reference _wp_switched.



git-svn-id: http://core.svn.wordpress.org/trunk@21485 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
ryan 2012-08-09 16:28:15 +00:00
parent 14ecba530b
commit d286875515
7 changed files with 113 additions and 88 deletions
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18
wp-includes/admin-bar.php
View File

@ -344,8 +344,8 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
$blue_wp_logo_url = includes_url('images/wpmini-blue.png');
foreach ( (array) $wp_admin_bar->user->blogs as $blog ) {
// @todo Replace with some favicon lookup.
//$blavatar = '<img src="' . esc_url( blavatar_url( blavatar_domain( $blog->siteurl ), 'img', 16, $blue_wp_logo_url ) ) . '" alt="Blavatar" width="16" height="16" />';
switch_to_blog( $blog->userblog_id );
$blavatar = '<img src="' . esc_url($blue_wp_logo_url) . '" alt="' . esc_attr__( 'Blavatar' ) . '" width="16" height="16" class="blavatar"/>';
$blogname = empty( $blog->blogname ) ? $blog->domain : $blog->blogname;
@ -355,28 +355,28 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
'parent' => 'my-sites-list',
'id' => $menu_id,
'title' => $blavatar . $blogname,
'href' => get_admin_url( $blog->userblog_id ),
'href' => admin_url(),
) );
$wp_admin_bar->add_menu( array(
'parent' => $menu_id,
'id' => $menu_id . '-d',
'title' => __( 'Dashboard' ),
'href' => get_admin_url( $blog->userblog_id ),
'href' => admin_url(),
) );
if ( current_user_can_for_blog( $blog->userblog_id, 'edit_posts' ) ) {
if ( current_user_can( 'edit_posts' ) ) {
$wp_admin_bar->add_menu( array(
'parent' => $menu_id,
'id' => $menu_id . '-n',
'title' => __( 'New Post' ),
'href' => get_admin_url( $blog->userblog_id, 'post-new.php' ),
'href' => admin_url( 'post-new.php' ),
) );
$wp_admin_bar->add_menu( array(
'parent' => $menu_id,
'id' => $menu_id . '-c',
'title' => __( 'Manage Comments' ),
'href' => get_admin_url( $blog->userblog_id, 'edit-comments.php' ),
'href' => admin_url( 'edit-comments.php' ),
) );
}
@ -384,8 +384,10 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
'parent' => $menu_id,
'id' => $menu_id . '-v',
'title' => __( 'Visit Site' ),
'href' => get_home_url( $blog->userblog_id, '/' ),
'href' => home_url( '/' ),
) );
restore_current_blog();
}
}

49
wp-includes/capabilities.php
View File

@ -108,7 +108,37 @@ class WP_Roles {
$this->role_objects = array();
$this->role_names = array();
foreach ( (array) $this->roles as $role => $data ) {
foreach ( array_keys( $this->roles ) as $role ) {
$this->role_objects[$role] = new WP_Role( $role, $this->roles[$role]['capabilities'] );
$this->role_names[$role] = $this->roles[$role]['name'];
}
}
/**
* Reinitialize the object
*
* Recreates the role objects. This is typically called only by switch_to_blog()
* after switching wpdb to a new blog ID.
*
* @since 3.5.0
* @access public
*/
function reinit() {
// There is no need to reinit if using the wp_user_roles global.
if ( ! $this->use_db )
return;
global $wpdb, $wp_user_roles;
// Duplicated from _init() to avoid an extra function call.
$this->role_key = $wpdb->prefix . 'user_roles';
$this->roles = get_option( $this->role_key );
if ( empty( $this->roles ) )
return;
$this->role_objects = array();
$this->role_names = array();
foreach ( array_keys( $this->roles ) as $role ) {
$this->role_objects[$role] = new WP_Role( $role, $this->roles[$role]['capabilities'] );
$this->role_names[$role] = $this->roles[$role]['name'];
}
@ -233,8 +263,7 @@ class WP_Roles {
* @param string $role Role name to look up.
* @return bool
*/
function is_role( $role )
{
function is_role( $role ) {
return isset( $this->role_names[$role] );
}
}
@ -1231,21 +1260,21 @@ function current_user_can( $capability ) {
* @return bool
*/
function current_user_can_for_blog( $blog_id, $capability ) {
switch_to_blog( $blog_id );
$current_user = wp_get_current_user();
if ( empty( $current_user ) )
return false;
// Create new object to avoid stomping the global current_user.
$user = new WP_User( $current_user->ID );
// Set the blog id. @todo add blog id arg to WP_User constructor?
$user->for_blog( $blog_id );
$args = array_slice( func_get_args(), 2 );
$args = array_merge( array( $capability ), $args );
return call_user_func_array( array( &$user, 'has_cap' ), $args );
$can = call_user_func_array( array( $current_user, 'has_cap' ), $args );
restore_current_blog();
return $can;
}
/**

5
wp-includes/class-wp-xmlrpc-server.php
View File

@ -473,9 +473,11 @@ class wp_xmlrpc_server extends IXR_Server {
continue;
$blog_id = $blog->userblog_id;
$is_admin = current_user_can_for_blog( $blog_id, 'manage_options' );
switch_to_blog( $blog_id );
$is_admin = current_user_can( 'manage_options' );
$struct[] = array(
'isAdmin' => $is_admin,
'url' => home_url( '/' ),
@ -483,6 +485,7 @@ class wp_xmlrpc_server extends IXR_Server {
'blogName' => get_option( 'blogname' ),
'xmlrpc' => site_url( 'xmlrpc.php' )
);
restore_current_blog();
}

6
wp-includes/functions.php
View File

@ -1432,7 +1432,7 @@ function get_temp_dir() {
* @return array See above for description.
*/
function wp_upload_dir( $time = null ) {
global $switched;
global $_wp_switched;
$siteurl = get_option( 'siteurl' );
$upload_path = get_option( 'upload_path' );
$upload_path = trim($upload_path);
@ -1456,12 +1456,12 @@ function wp_upload_dir( $time = null ) {
$url = trailingslashit( $siteurl ) . $upload_path;
}
if ( defined('UPLOADS') && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
if ( defined('UPLOADS') && ! $main_override && ! $_wp_switched ) {
$dir = ABSPATH . UPLOADS;
$url = trailingslashit( $siteurl ) . UPLOADS;
}
if ( is_multisite() && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
if ( is_multisite() && ! $main_override && ! $_wp_switched ) {
if ( defined( 'BLOGUPLOADDIR' ) )
$dir = untrailingslashit(BLOGUPLOADDIR);
$url = str_replace( UPLOADS, 'files', $url );

96
wp-includes/ms-blogs.php
View File

@ -446,61 +446,49 @@ function update_blog_option( $id, $option, $value, $deprecated = null ) {
* @since MU
*
* @param int $new_blog The id of the blog you want to switch to. Default: current blog
* @param bool $validate Whether to check if $new_blog exists before proceeding
* @param bool $deprecated Depecreated argument
* @return bool True on success, False if the validation failed
*/
function switch_to_blog( $new_blog, $validate = false ) {
global $wpdb, $table_prefix, $blog_id, $switched, $switched_stack, $wp_roles, $wp_object_cache;
function switch_to_blog( $new_blog, $deprecated = null ) {
global $wpdb, $wp_roles;
if ( empty( $new_blog ) )
$new_blog = $blog_id;
$new_blog = $GLOBALS['blog_id'];
if ( $validate && ! get_blog_details( $new_blog ) )
return false;
if ( empty($switched_stack) )
$switched_stack = array();
$switched_stack[] = $blog_id;
$GLOBALS['_wp_switched_stack'][] = $GLOBALS['blog_id'];
/* If we're switching to the same blog id that we're on,
* set the right vars, do the associated actions, but skip
* the extra unnecessary work */
if ( $blog_id == $new_blog ) {
do_action( 'switch_blog', $blog_id, $blog_id );
$switched = true;
if ( $new_blog == $GLOBALS['blog_id'] ) {
do_action( 'switch_blog', $new_blog, $new_blog );
$GLOBALS['_wp_switched'] = true;
return true;
}
$wpdb->set_blog_id( $new_blog );
$table_prefix = $wpdb->prefix;
$prev_blog_id = $blog_id;
$blog_id = $new_blog;
if ( is_object( $wp_roles ) ) {
$wpdb->suppress_errors();
if ( method_exists( $wp_roles ,'_init' ) )
$wp_roles->_init();
elseif ( method_exists( $wp_roles, '__construct' ) )
$wp_roles->__construct();
$wpdb->suppress_errors( false );
}
$GLOBALS['table_prefix'] = $wpdb->prefix;
$prev_blog_id = $GLOBALS['blog_id'];
$GLOBALS['blog_id'] = $new_blog;
if ( did_action( 'init' ) ) {
$wp_roles->reinit();
$current_user = wp_get_current_user();
if ( is_object( $current_user ) )
$current_user->for_blog( $blog_id );
$current_user->for_blog( $new_blog );
}
if ( function_exists( 'wp_cache_switch_to_blog' ) ) {
wp_cache_switch_to_blog( $blog_id );
wp_cache_switch_to_blog( $new_blog );
} else {
global $wp_object_cache;
if ( is_object( $wp_object_cache ) && isset( $wp_object_cache->global_groups ) )
$global_groups = $wp_object_cache->global_groups;
else
$global_groups = false;
wp_cache_init();
if ( function_exists( 'wp_cache_add_global_groups' ) ) {
if ( is_array( $global_groups ) )
wp_cache_add_global_groups( $global_groups );
@ -510,8 +498,9 @@ function switch_to_blog( $new_blog, $validate = false ) {
}
}
do_action('switch_blog', $blog_id, $prev_blog_id);
$switched = true;
do_action( 'switch_blog', $new_blog, $prev_blog_id );
$GLOBALS['_wp_switched'] = true;
return true;
}
@ -524,51 +513,43 @@ function switch_to_blog( $new_blog, $validate = false ) {
* @return bool True on success, False if we're already on the current blog
*/
function restore_current_blog() {
global $table_prefix, $wpdb, $blog_id, $switched, $switched_stack, $wp_roles, $wp_object_cache;
global $wpdb, $wp_roles;
if ( !$switched )
if ( ! $GLOBALS['_wp_switched'] )
return false;
if ( !is_array( $switched_stack ) )
return false;
$blog = array_pop( $GLOBALS['_wp_switched_stack'] );
$blog = array_pop( $switched_stack );
if ( $blog_id == $blog ) {
if ( $GLOBALS['blog_id'] == $blog ) {
do_action( 'switch_blog', $blog, $blog );
/* If we still have items in the switched stack, consider ourselves still 'switched' */
$switched = ( is_array( $switched_stack ) && count( $switched_stack ) > 0 );
// If we still have items in the switched stack, consider ourselves still 'switched'
$GLOBALS['_wp_switched'] = ! empty( $GLOBALS['_wp_switched_stack'] );
return true;
}
$wpdb->set_blog_id( $blog );
$prev_blog_id = $blog_id;
$blog_id = $blog;
$table_prefix = $wpdb->prefix;
if ( is_object( $wp_roles ) ) {
$wpdb->suppress_errors();
if ( method_exists( $wp_roles ,'_init' ) )
$wp_roles->_init();
elseif ( method_exists( $wp_roles, '__construct' ) )
$wp_roles->__construct();
$wpdb->suppress_errors( false );
}
$prev_blog_id = $GLOBALS['blog_id'];
$GLOBALS['blog_id'] = $blog;
$GLOBALS['table_prefix'] = $wpdb->prefix;
if ( did_action( 'init' ) ) {
$wp_roles->reinit();
$current_user = wp_get_current_user();
if ( is_object( $current_user ) )
$current_user->for_blog( $blog_id );
$current_user->for_blog( $blog );
}
if ( function_exists( 'wp_cache_switch_to_blog' ) ) {
wp_cache_switch_to_blog( $blog_id );
wp_cache_switch_to_blog( $blog );
} else {
global $wp_object_cache;
if ( is_object( $wp_object_cache ) && isset( $wp_object_cache->global_groups ) )
$global_groups = $wp_object_cache->global_groups;
else
$global_groups = false;
wp_cache_init();
if ( function_exists( 'wp_cache_add_global_groups' ) ) {
if ( is_array( $global_groups ) )
wp_cache_add_global_groups( $global_groups );
@ -578,10 +559,11 @@ function restore_current_blog() {
}
}
do_action('switch_blog', $blog_id, $prev_blog_id);
do_action( 'switch_blog', $blog, $prev_blog_id );
// If we still have items in the switched stack, consider ourselves still 'switched'
$GLOBALS['_wp_switched'] = ! empty( $GLOBALS['_wp_switched_stack'] );
/* If we still have items in the switched stack, consider ourselves still 'switched' */
$switched = ( is_array( $switched_stack ) && count( $switched_stack ) > 0 );
return true;
}

2
wp-includes/ms-settings.php
View File

@ -126,6 +126,8 @@ if ( !isset( $current_site ) || !isset( $current_blog ) ) {
$wpdb->set_prefix( $table_prefix, false ); // $table_prefix can be set in sunrise.php
$wpdb->set_blog_id( $current_blog->blog_id, $current_blog->site_id );
$table_prefix = $wpdb->get_blog_prefix();
$_wp_switched_stack = array();
$_wp_switched = false;
// need to init cache again after blog_id is set
wp_start_object_cache();

7
wp-settings.php
View File

@ -252,6 +252,13 @@ $wp = new WP();
*/
$GLOBALS['wp_widget_factory'] = new WP_Widget_Factory();
/**
* WordPress User Roles
* @global object $wp_roles
* @since 2.0.0
*/
$GLOBALS['wp_roles'] = new WP_Roles();
do_action( 'setup_theme' );
// Define the template related constants.