Source
File: wp-includes/rest-api/endpoints/class-wp-rest-plugins-controller.php
public function create_item( $request ) {
require_once ABSPATH . 'wp-admin/includes/file.php';
require_once ABSPATH . 'wp-admin/includes/plugin.php';
require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
require_once ABSPATH . 'wp-admin/includes/plugin-install.php';
$slug = $request['slug'];
// Verify filesystem is accessible first.
$filesystem_available = $this->is_filesystem_available();
if ( is_wp_error( $filesystem_available ) ) {
return $filesystem_available;
}
$api = plugins_api(
'plugin_information',
array(
'slug' => $slug,
'fields' => array(
'sections' => false,
'language_packs' => true,
),
)
);
if ( is_wp_error( $api ) ) {
if ( false !== strpos( $api->get_error_message(), 'Plugin not found.' ) ) {
$api->add_data( array( 'status' => 404 ) );
} else {
$api->add_data( array( 'status' => 500 ) );
}
return $api;
}
$skin = new WP_Ajax_Upgrader_Skin();
$upgrader = new Plugin_Upgrader( $skin );
$result = $upgrader->install( $api->download_link );
if ( is_wp_error( $result ) ) {
$result->add_data( array( 'status' => 500 ) );
return $result;
}
// This should be the same as $result above.
if ( is_wp_error( $skin->result ) ) {
$skin->result->add_data( array( 'status' => 500 ) );
return $skin->result;
}
if ( $skin->get_errors()->has_errors() ) {
$error = $skin->get_errors();
$error->add_data( array( 'status' => 500 ) );
return $error;
}
if ( is_null( $result ) ) {
global $wp_filesystem;
// Pass through the error from WP_Filesystem if one was raised.
if ( $wp_filesystem instanceof WP_Filesystem_Base && is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) {
return new WP_Error( 'unable_to_connect_to_filesystem', $wp_filesystem->errors->get_error_message(), array( 'status' => 500 ) );
}
return new WP_Error( 'unable_to_connect_to_filesystem', __( 'Unable to connect to the filesystem. Please confirm your credentials.' ), array( 'status' => 500 ) );
}
$file = $upgrader->plugin_info();
if ( ! $file ) {
return new WP_Error( 'unable_to_determine_installed_plugin', __( 'Unable to determine what plugin was installed.' ), array( 'status' => 500 ) );
}
if ( 'inactive' !== $request['status'] ) {
$can_change_status = $this->plugin_status_permission_check( $file, $request['status'], 'inactive' );
if ( is_wp_error( $can_change_status ) ) {
return $can_change_status;
}
$changed_status = $this->handle_plugin_status( $file, $request['status'], 'inactive' );
if ( is_wp_error( $changed_status ) ) {
return $changed_status;
}
}
// Install translations.
$installed_locales = array_values( get_available_languages() );
/** This filter is documented in wp-includes/update.php */
$installed_locales = apply_filters( 'plugins_update_check_locales', $installed_locales );
$language_packs = array_map(
function( $item ) {
return (object) $item;
},
$api->language_packs
);
$language_packs = array_filter(
$language_packs,
function( $pack ) use ( $installed_locales ) {
return in_array( $pack->language, $installed_locales, true );
}
);
if ( $language_packs ) {
$lp_upgrader = new Language_Pack_Upgrader( $skin );
// Install all applicable language packs for the plugin.
$lp_upgrader->bulk_upgrade( $language_packs );
}
$path = WP_PLUGIN_DIR . '/' . $file;
$data = get_plugin_data( $path, false, false );
$data['_file'] = $file;
$response = $this->prepare_item_for_response( $data, $request );
$response->set_status( 201 );
$response->header( 'Location', rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, substr( $file, 0, - 4 ) ) ) );
return $response;
}