Ticket #39677: 39677.2.diff

src/wp-admin/network/settings.php

@@ -63 +63 @@
         );
 
         // Handle translation install.
-        if ( ! empty( $_POST['WPLANG'] ) && wp_can_install_language_pack() ) {  // @todo: Skip if already installed
+        if ( ! empty( $_POST['WPLANG'] ) && current_user_can( 'install_languages' ) && wp_can_install_language_pack() ) {  // @todo: Skip if already installed
                 $language = wp_download_language_pack( $_POST['WPLANG'] );
                 if ( $language ) {
                         $_POST['WPLANG'] = $language;
@@ -342 +342 @@
                                                         'selected'     => $lang,
                                                         'languages'    => $languages,
                                                         'translations' => $translations,
-                                                        'show_available_translations' => wp_can_install_language_pack(),
+                                                        'show_available_translations' => current_user_can( 'install_languages' ) && wp_can_install_language_pack(),
                                                 ) );
                                                 ?>
                                         </td>

src/wp-admin/network/site-new.php

@@ -65 +65 @@
         if ( isset( $_POST['WPLANG'] ) ) {
                 if ( '' === $_POST['WPLANG'] ) {
                         $meta['WPLANG'] = ''; // en_US
-                } elseif ( wp_can_install_language_pack() ) {
+                } elseif ( current_user_can( 'install_languages' ) && wp_can_install_language_pack() ) {
                         $language = wp_download_language_pack( wp_unslash( $_POST['WPLANG'] ) );
                         if ( $language ) {
                                 $meta['WPLANG'] = $language;
@@ -233 +233 @@
                                                 'selected'                    => $lang,
                                                 'languages'                   => $languages,
                                                 'translations'                => $translations,
-                                                'show_available_translations' => wp_can_install_language_pack(),
+                                                'show_available_translations' => current_user_can( 'install_languages' ) && wp_can_install_language_pack(),
                                         ) );
                                         ?>
                                 </td>

src/wp-admin/options-general.php

@@ -144 +144 @@
                                 'selected'     => $locale,
                                 'languages'    => $languages,
                                 'translations' => $translations,
-                                'show_available_translations' => ( ! is_multisite() || is_super_admin() ) && wp_can_install_language_pack(),
+                                'show_available_translations' => current_user_can( 'install_languages' ) && wp_can_install_language_pack(),
                         ) );
 
                         // Add note about deprecated WPLANG constant.

src/wp-admin/options.php

@@ -182 +182 @@
                 }
 
                 // Handle translation install.
-                if ( ! empty( $_POST['WPLANG'] ) && ( ! is_multisite() || is_super_admin() ) ) { // @todo: Skip if already installed
+                if ( ! empty( $_POST['WPLANG'] ) && current_user_can( 'install_languages' ) ) { // @todo: Skip if already installed
                         require_once( ABSPATH . 'wp-admin/includes/translation-install.php' );
 
                         if ( wp_can_install_language_pack() ) {

src/wp-admin/update-core.php

@@ -608 +608 @@
         echo ' &nbsp; <a class="button" href="' . esc_url( self_admin_url('update-core.php?force-check=1') ) . '">' . __( 'Check Again' ) . '</a>';
         echo '</p>';
 
-        if ( $core = current_user_can( 'update_core' ) )
+        if ( current_user_can( 'update_core' ) ) {
                 core_upgrade_preamble();
-        if ( $plugins = current_user_can( 'update_plugins' ) )
+        }
+        if ( current_user_can( 'update_plugins' ) ) {
                 list_plugin_updates();
-        if ( $themes = current_user_can( 'update_themes' ) )
+        }
+        if ( current_user_can( 'update_themes' ) ) {
                 list_theme_updates();
-        if ( $core || $plugins || $themes )
+        }
+        if ( current_user_can( 'update_languages' ) ) {
                 list_translation_updates();
-        unset( $core, $plugins, $themes );
+        }
+
         /**
          * Fires after the core, plugin, and theme update tables.
          *
@@ -729 +733 @@
 
 } elseif ( 'do-translation-upgrade' == $action ) {
 
-        if ( ! current_user_can( 'update_core' ) && ! current_user_can( 'update_plugins' ) && ! current_user_can( 'update_themes' ) )
+        if ( ! current_user_can( 'update_languages' ) )
                 wp_die( __( 'Sorry, you are not allowed to update this site.' ) );
 
         check_admin_referer( 'upgrade-translations' );

src/wp-includes/capabilities.php

@@ -378 +378 @@
         case 'install_themes':
         case 'upload_themes':
         case 'update_core':
-                // Disallow anything that creates, deletes, or updates core, plugin, or theme files.
+        case 'update_languages':
+        case 'install_languages':
+                // Disallow anything that creates, deletes, or updates core, plugin, theme, or translation files.
                 // Files in uploads are excepted.
                 if ( wp_disallow_file_mods( 'capability_update_core' ) ) {
                         $caps[] = 'do_not_allow';
                 } elseif ( is_multisite() && ! is_super_admin( $user_id ) ) {
                         $caps[] = 'do_not_allow';
+                } elseif ( 'update_languages' === $cap || 'install_languages' === $cap ) {
+                        $caps[] = 'update_core';
                 } elseif ( 'upload_themes' === $cap ) {
                         $caps[] = 'install_themes';
                 } elseif ( 'upload_plugins' === $cap ) {

tests/phpunit/tests/user/capabilities.php

@@ -233 +233 @@
                         'upload_themes'          => array( 'administrator' ),
                         'customize'              => array( 'administrator' ),
                         'add_users'              => array( 'administrator' ),
+                        'install_languages'      => array( 'administrator' ),
+                        'update_languages'       => array( 'administrator' ),
 
                         'edit_categories'        => array( 'administrator', 'editor' ),
                         'delete_categories'      => array( 'administrator', 'editor' ),
@@ -261 +263 @@
                         'upload_themes'          => array(),
                         'edit_css'               => array(),
                         'upgrade_network'        => array(),
+                        'install_languages'      => array(),
+                        'update_languages'       => array(),
 
                         'customize'              => array( 'administrator' ),
                         'delete_site'            => array( 'administrator' ),