587 lines
18 KiB
PHP
587 lines
18 KiB
PHP
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<?php
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/*
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Plugin Name: Auth Manager Plus
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Plugin URI: https://github.com/joshp23/YOURLS-AuthMgrPlus
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Description: Role Based Access Controlls with seperated user data for authenticated users
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Version: 1.0.0
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Author: Josh Panter, nicwaller, Ian Barber <ian.barber@gmail.com>
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Author URI: https://unfettered.net
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*/
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// No direct call
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if( !defined( 'YOURLS_ABSPATH' ) ) die();
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/****************** SET UP CONSTANTS ******************/
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class AuthMgrPlusRoles { const Administrator = 'Administrator';
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const Editor = 'Editor';
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const Contributor = 'Contributor';
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}
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class AuthMgrPlusCapability {
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const ShowAdmin = 'ShowAdmin';
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const AddURL = 'AddURL';
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const DeleteURL = 'DeleteURL';
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const EditURL = 'EditURL';
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const ManageAnonURL = 'ManageAnonURL';
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const ManageUsrsURL = 'ManageUsrsURL';
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const ManagePlugins = 'ManagePlugins';
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const API = 'API';
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const APIu = 'APIu';
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const ViewStats = 'ViewStats';
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const ViewAll = 'ViewAll';
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}
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/********** Add hooks to intercept functionality in CORE **********/
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yourls_add_action( 'load_template_infos', 'authMgrPlus_intercept_stats' );
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function authMgrPlus_intercept_stats() {
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if ( 'YOURLS_PRIVATE_INFOS' === true ) {
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authMgrPlus_require_capability( AuthMgrPlusCapability::ViewStats );
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}
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}
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yourls_add_action( 'api', 'authMgrPlus_intercept_api' );
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function authMgrPlus_intercept_api() {
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if ( 'YOURLS_PRIVATE_API' === true ) {
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if ( isset( $_REQUEST['shorturl'] ) || isset( $_REQUEST['stats'] ) ) {
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authMgrPlus_require_capability( AuthMgrPlusCapability::APIu );
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} else {
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authMgrPlus_require_capability( AuthMgrPlusCapability::API );
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}
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}
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}
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yourls_add_action( 'auth_successful', 'authMgrPlus_intercept_admin' );
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/**
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* YOURLS processes most actions in the admin page. It would be ideal
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* to add a unique hook for each action, but unfortunately we need to
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* hook the admin page load itself, and try to figure out what action
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* is intended.
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*
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* TODO: look for these hooks
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*
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* At this point, reasonably assume that the current request is for
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* a rendering of the admin page.
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*/
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function authMgrPlus_intercept_admin() {
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authMgrPlus_require_capability( authMgrPlusCapability::ShowAdmin );
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// we use this GET param to send up a feedback notice to user
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if ( isset( $_GET['access'] ) && $_GET['access']=='denied' ) {
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yourls_add_notice('Access Denied');
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}
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$action_capability_map = array(
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'add' => AuthMgrPlusCapability::AddURL,
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'delete' => AuthMgrPlusCapability::DeleteURL,
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'edit_display' => AuthMgrPlusCapability::EditURL,
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'edit_save' => AuthMgrPlusCapability::EditURL,
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'activate' => AuthMgrPlusCapability::ManagePlugins,
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'deactivate' => AuthMgrPlusCapability::ManagePlugins,
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);
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// allow manipulation of this list ( be mindfull of extending Authmp Capability class if needed )
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yourls_apply_filter( 'authMgrPlus_action_capability_map', $action_capability_map);
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// Key actions like Add/Edit/Delete are AJAX requests
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if ( yourls_is_Ajax() ) {
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// Define some boundaries for ownership
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$restricted_actions = array( 'edit_display',
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'edit_save',
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'delete'
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);
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// Allow some flexability with those boundaries
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yourls_apply_filter( 'AuthMgrPlus_restricted_ajax_actions', $restricted_actions );
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$action_keyword = $_REQUEST['action'];
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$cap_needed = $action_capability_map[$action_keyword];
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// Check the action against those boundaries
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if ( in_array( $action_keyword, $restricted_actions) ) {
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$keyword = $_REQUEST['keyword'];
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$do = authMgrPlus_manage_keyword( $keyword, $cap_needed );
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} else {
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$do = authMgrPlus_have_capability( $cap_needed );
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}
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if ( $do !== true ) {
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$err = array();
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$err['status'] = 'fail';
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$err['code'] = 'error:authorization';
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$err['message'] = 'Access Denied';
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$err['errorCode'] = '403';
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echo json_encode( $err );
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die();
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}
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}
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// Intercept requests for plugin management
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if( isset( $_SERVER['REQUEST_URI'] ) && preg_match('/\/admin\/plugins\.php.*/', $_SERVER['REQUEST_URI'] ) ) {
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// Is this a plugin page request?
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if ( isset( $_REQUEST['page'] ) ) {
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// Is this an allowed plugin?
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global $authMgrPlus_allowed_plugin_pages;
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if ( authMgrPlus_have_capability( authMgrPlusCapability::ManagePlugins ) !== true) {
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$r = $_REQUEST['page'];
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if(!in_array($r, $authMgrPlus_allowed_plugin_pages ) ) {
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yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
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}
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}
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} else {
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// Should this user touch plugins?
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if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ManagePlugins ) !== true) {
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yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
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}
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}
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// intercept requests for global plugin management actions
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if (isset( $_REQUEST['plugin'] ) ) {
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$action_keyword = $_REQUEST['action'];
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$cap_needed = $action_capability_map[$action_keyword];
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if ( $cap_needed !== NULL && authMgrPlus_have_capability( $cap_needed ) !== true) {
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yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
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}
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}
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}
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}
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/*
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* Cosmetic filter: removes disallowed plugins from link list
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*/
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if( yourls_is_admin() ) {
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yourls_add_filter( 'admin_sublinks', 'authMgrPlus_admin_sublinks' );
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}
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function authMgrPlus_admin_sublinks( $links ) {
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global $authMgrPlus_allowed_plugin_pages;
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if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ManagePlugins ) !== true) {
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foreach( $links['plugins'] as $link => $ar ) {
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if(!in_array($link, $authMgrPlus_allowed_plugin_pages) )
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unset($links['plugins'][$link]);
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}
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}
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sort($links['plugins']);
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return $links;
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}
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/*
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* Cosmetic filter: displays currently available roles
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* by hovering mouse over the username in logout link.
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*/
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yourls_add_filter( 'logout_link', 'authMgrPlus_html_append_roles' );
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function authMgrPlus_html_append_roles( $original ) {
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$authenticated = yourls_is_valid_user();
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if ( $authenticated === true ) {
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$listcaps = implode(', ', authMgrPlus_current_capabilities());
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return '<div title="'.$listcaps.'">'.$original.'</div>';
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} else {
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return $original;
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}
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}
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/**************** CAPABILITY TESTING ****************/
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/*
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* If capability is not permitted in current context, then abort.
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* This is the most basic way to intercept unauthorized usage.
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*/
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// TODO: API responses!
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function authMgrPlus_require_capability( $capability ) {
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if ( !authMgrPlus_have_capability( $capability ) ) {
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// If the user can't view admin interface, return a plain error.
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if ( !authMgrPlus_have_capability( AuthMgrPlusCapability::ShowAdmin ) ) {
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// header("HTTP/1.0 403 Forbidden");
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die('Require permissions to show admin interface.');
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}
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// Otherwise, render errors in admin interface
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yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
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die();
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}
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}
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// Heart of system - Can the user do "X"?
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function authMgrPlus_have_capability( $capability ) {
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global $authMgrPlus_anon_capabilities;
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global $authMgrPlus_role_capabilities;
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global $authMgrPlus_admin_ipranges;
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// Make sure the environment has been setup
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authMgrPlus_env_check();
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// Check anon capabilities
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$return = in_array( $capability, $authMgrPlus_anon_capabilities );
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// Check user-role based auth
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if( !$return ) {
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// Only users have roles.
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$authenticated = yourls_is_valid_user();
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if ( $authenticated !== true )
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return false;
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// List capabilities of particular user role
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$user_caps = array();
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foreach ( $authMgrPlus_role_capabilities as $rolename => $rolecaps ) {
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if ( authMgrPlus_user_has_role( YOURLS_USER, $rolename ) ) {
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$user_caps = array_merge( $user_caps, $rolecaps );
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}
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}
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$user_caps = array_unique( $user_caps );
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// Is the requested capability in this list?
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$return = in_array( $capability, $user_caps );
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}
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// Is user connecting from an admin designated IP?
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if( !$return ) {
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// the array of ranges: '127.0.0.0/8' will always be admin
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foreach ($authMgrPlus_admin_ipranges as $range) {
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$return = authMgrPlus_cidr_match( $_SERVER['REMOTE_ADDR'], $range );
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if( $return )
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break;
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}
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}
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return $return;
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}
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// Determine whether a specific user has a role.
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function authMgrPlus_user_has_role( $username, $rolename ) {
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global $authMgrPlus_role_assignment;
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// if no role assignments are created, grant everything FIXME: Make 'admin'
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// so the site still works even if stuff is configured wrong
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if ( empty( $authMgrPlus_role_assignment ) )
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return true;
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// do this the case-insensitive way
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// the entire array was made lowercase in environment check
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$username = strtolower($username);
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$rolename = strtolower($rolename);
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// if the role doesn't exist, give up now.
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if ( !in_array( $rolename, array_keys( $authMgrPlus_role_assignment ) ) )
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return false;
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$users_in_role = $authMgrPlus_role_assignment[$rolename];
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return in_array( $username, $users_in_role );
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}
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/********************* KEYWORD OWNERSHIP ************************/
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// Filter out restricted access to keyword data in...
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// Admin list
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yourls_add_filter( 'admin_list_where', 'authMgrPlus_admin_list_where' );
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function authMgrPlus_admin_list_where($where) {
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if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ViewAll ) )
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return $where; // Allow admin/editor users to see the lot.
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$user = YOURLS_USER;
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if (version_compare(YOURLS_VERSION, '1.7.3') >= 0) {
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$where['sql'] = $where['sql'] . " AND (`user` = :user OR `user` IS NULL) ";
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$where['binds']['user'] = $user;
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}
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else
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$where = $where . " AND (`user` = $user OR `user` IS NULL) ";
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return $where;
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}
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// API stats
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yourls_add_filter( 'api_url_stats', 'authMgrPlus_api_url_stats' );
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function authMgrPlus_api_url_stats( $return, $shorturl ) {
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$keyword = str_replace( YOURLS_SITE . '/' , '', $shorturl ); // accept either 'http://ozh.in/abc' or 'abc'
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$keyword = yourls_sanitize_string( $keyword );
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$keyword = addslashes($keyword);
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if(authMgrPlus_access_keyword($keyword))
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return $return;
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else
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return array('simple' => "URL is owned by another user", 'message' => 'URL is owned by another user', 'errorCode' => 403);
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}
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// Info pages
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yourls_add_action( 'pre_yourls_infos', 'authMgrPlus_pre_yourls_infos' );
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function authMgrPlus_pre_yourls_infos( $keyword ) {
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if( !authMgrPlus_access_keyword($keyword) ) {
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$authenticated = yourls_is_valid_user();
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if ( $authenticated === true )
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yourls_redirect( yourls_admin_url( '?access=denied' ), 302 );
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else
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yourls_redirect( YOURLS_SITE, 302 );
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}
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}
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// DB stats
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yourls_add_filter( 'get_db_stats', 'authMgrPlus_get_db_stats' );
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function authMgrPlus_get_db_stats( $return, $where ) {
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if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ViewAll ) )
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return $return; // Allow admin/editor users to see the lot.
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// or... filter results
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global $ydb;
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$table_url = YOURLS_DB_TABLE_URL;
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$user = YOURLS_USER;
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if (version_compare(YOURLS_VERSION, '1.7.3') >= 0) {
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$where['sql'] = $where['sql'] . " AND (`user` = :user OR `user` IS NULL) ";
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$where['binds']['user'] = $user;
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$sql = "SELECT COUNT(keyword) as count, SUM(clicks) as sum FROM `$table_url` WHERE 1=1 " . $where['sql'];
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$binds = $where['binds'];
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$totals = $ydb->fetchObject($sql, $binds);
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} else {
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$where = $where . " AND (`user` = $user OR `user` IS NULL) ";
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$totals = $ydb->get_results("SELECT COUNT(keyword) as count, SUM(clicks) as sum FROM `$table_url` WHERE 1=1 " . $where );
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}
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$return = array( 'total_links' => $totals->count, 'total_clicks' => $totals->sum );
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return $return;
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}
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/********************* HOUSEKEEPING ************************/
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// Validate environment setup
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function authMgrPlus_env_check() {
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global $authMgrPlus_anon_capabilities;
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global $authMgrPlus_role_capabilities;
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global $authMgrPlus_role_assignment;
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global $authMgrPlus_admin_ipranges;
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global $authMgrPlus_allowed_plugin_pages;
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if ( !isset( $authMgrPlus_anon_capabilities) ) {
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$authMgrPlus_anon_capabilities = array();
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}
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if ( !isset( $authMgrPlus_role_capabilities) ) {
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$authMgrPlus_role_capabilities = array(
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AuthMgrPlusRoles::Administrator => array(
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AuthMgrPlusCapability::ShowAdmin,
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AuthMgrPlusCapability::AddURL,
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AuthMgrPlusCapability::EditURL,
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AuthMgrPlusCapability::DeleteURL,
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AuthMgrPlusCapability::ManageAnonURL,
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AuthMgrPlusCapability::ManageUsrsURL,
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AuthMgrPlusCapability::ManagePlugins,
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AuthMgrPlusCapability::API,
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AuthMgrPlusCapability::APIu,
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AuthMgrPlusCapability::ViewStats,
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AuthMgrPlusCapability::ViewAll,
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),
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AuthMgrPlusRoles::Editor => array(
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AuthMgrPlusCapability::ShowAdmin,
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AuthMgrPlusCapability::AddURL,
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AuthMgrPlusCapability::EditURL,
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AuthMgrPlusCapability::DeleteURL,
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AuthMgrPlusCapability::ManageAnonURL,
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AuthMgrPlusCapability::APIu,
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AuthMgrPlusCapability::ViewStats,
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AuthMgrPlusCapability::ViewAll,
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),
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AuthMgrPlusRoles::Contributor => array(
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AuthMgrPlusCapability::ShowAdmin,
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AuthMgrPlusCapability::AddURL,
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AuthMgrPlusCapability::EditURL,
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AuthMgrPlusCapability::DeleteURL,
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AuthMgrPlusCapability::APIu,
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AuthMgrPlusCapability::ViewStats,
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),
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);
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}
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if ( !isset( $authMgrPlus_role_assignment ) ) {
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$authMgrPlus_role_assignment = array();
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}
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if ( !isset( $authMgrPlus_admin_ipranges ) ) {
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$authMgrPlus_admin_ipranges = array(
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'127.0.0.0/8',
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);
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}
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if ( !isset( $authMgrPlus_allowed_plugin_pages ) ) {
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||
|
$authMgrPlus_allowed_plugin_pages = array(
|
||
|
);
|
||
|
}
|
||
|
|
||
|
// convert role assignment table to lower case if it hasn't been done already
|
||
|
// this makes searches much easier!
|
||
|
$authMgrPlus_role_assignment_lower = array();
|
||
|
foreach ( $authMgrPlus_role_assignment as $key => $value ) {
|
||
|
$t_key = strtolower( $key );
|
||
|
$t_value = array_map('strtolower', $value);
|
||
|
$authMgrPlus_role_assignment_lower[$t_key] = $t_value;
|
||
|
}
|
||
|
$authMgrPlus_role_assignment = $authMgrPlus_role_assignment_lower;
|
||
|
unset($authMgrPlus_role_assignment_lower);
|
||
|
|
||
|
// allow manipulation of env by other plugins
|
||
|
// be mindfull of extending AuthMgrPlusCapability and AuthMgrPlusRoles classes if needed
|
||
|
$a = $authMgrPlus_anon_capabilities;
|
||
|
$b = $authMgrPlus_role_capabilities;
|
||
|
$c = $authMgrPlus_role_assignment;
|
||
|
$d = $authMgrPlus_admin_ipranges;
|
||
|
$e = $authMgrPlus_allowed_plugin_pages;
|
||
|
|
||
|
yourls_apply_filter( 'authMgrPlus_env_check', $a, $b, $c, $d, $e );
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
// Activation: add the user column to the URL table if not added
|
||
|
yourls_add_action( 'activated_authMgrPlus/plugin.php', 'authMgrPlus_activated' );
|
||
|
function authMgrPlus_activated() {
|
||
|
global $ydb;
|
||
|
|
||
|
$table = YOURLS_DB_TABLE_URL;
|
||
|
$version = version_compare(YOURLS_VERSION, '1.7.3') >= 0;
|
||
|
|
||
|
if ($version) {
|
||
|
$sql = "DESCRIBE `$table`";
|
||
|
$results = $ydb->fetchObjects($sql);
|
||
|
} else {
|
||
|
$results = $ydb->get_results("DESCRIBE $table");
|
||
|
}
|
||
|
|
||
|
$activated = false;
|
||
|
foreach($results as $r) {
|
||
|
if($r->Field == 'user') {
|
||
|
$activated = true;
|
||
|
}
|
||
|
}
|
||
|
if(!$activated) {
|
||
|
if ($version) {
|
||
|
$sql = "ALTER TABLE `$table` ADD `user` VARCHAR(255) NULL)";
|
||
|
$insert = $ydb->fetchAffected($sql);
|
||
|
} else {
|
||
|
$ydb->query("ALTER TABLE `$table` ADD `user` VARCHAR(255) NULL");
|
||
|
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
/***************** HELPER FUNCTIONS ********************/
|
||
|
|
||
|
// List currently available capabilities
|
||
|
function authMgrPlus_current_capabilities() {
|
||
|
$current_capabilities = array();
|
||
|
$all_capabilities = array(
|
||
|
AuthMgrPlusCapability::ShowAdmin,
|
||
|
AuthMgrPlusCapability::AddURL,
|
||
|
AuthMgrPlusCapability::EditURL,
|
||
|
AuthMgrPlusCapability::DeleteURL,
|
||
|
AuthMgrPlusCapability::ManageAnonURL,
|
||
|
AuthMgrPlusCapability::ManageUsrsURL,
|
||
|
AuthMgrPlusCapability::ManagePlugins,
|
||
|
AuthMgrPlusCapability::API,
|
||
|
AuthMgrPlusCapability::APIu,
|
||
|
AuthMgrPlusCapability::ViewStats,
|
||
|
AuthMgrPlusCapability::ViewAll,
|
||
|
);
|
||
|
// allow manipulation of this list ( be mindfull of extending the AuthMgrPlusCapability class if needed )
|
||
|
yourls_apply_filter( 'authMgrPlus_current_capabilities', $all_capabilities);
|
||
|
|
||
|
foreach ( $all_capabilities as $cap ) {
|
||
|
if ( authMgrPlus_have_capability( $cap ) ) {
|
||
|
$current_capabilities[] = $cap;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return $current_capabilities;
|
||
|
}
|
||
|
|
||
|
// Check for IP in a range
|
||
|
// from: http://stackoverflow.com/questions/594112/matching-an-ip-to-a-cidr-mask-in-php5
|
||
|
function authMgrPlus_cidr_match($ip, $range) {
|
||
|
list ($subnet, $bits) = explode('/', $range);
|
||
|
$ip = ip2long($ip);
|
||
|
$subnet = ip2long($subnet);
|
||
|
$mask = -1 << (32 - $bits);
|
||
|
$subnet &= $mask; # nb: in case the supplied subnet wasn't correctly aligned
|
||
|
return ($ip & $mask) == $subnet;
|
||
|
}
|
||
|
|
||
|
// Check user access to a keyword ( can they see it )
|
||
|
function authMgrPlus_access_keyword( $keyword ) {
|
||
|
global $ydb;
|
||
|
|
||
|
if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ViewAll ) )
|
||
|
return true;
|
||
|
|
||
|
$table = YOURLS_DB_TABLE_URL;
|
||
|
$user = null;
|
||
|
if(defined('YOURLS_USER'))
|
||
|
$user = YOURLS_USER;
|
||
|
|
||
|
if (version_compare(YOURLS_VERSION, '1.7.3') >= 0) {
|
||
|
$binds = array( 'keyword' => $keyword, 'user' => $user);
|
||
|
$sql = "SELECT 1 FROM `$table` WHERE (`user` IS NULL OR `user` = :user) AND `keyword` = :keyword";
|
||
|
$result = $ydb->fetchAffected($sql, $binds);
|
||
|
} else
|
||
|
$result = $ydb->query("SELECT 1 FROM `$table` WHERE (`user` IS NULL OR `user` = $user) AND `keyword` = $keyword");
|
||
|
|
||
|
return $result > 0;
|
||
|
}
|
||
|
// Check user rights to a keyword ( can manage it )
|
||
|
function authMgrPlus_manage_keyword( $keyword, $capability ) {
|
||
|
// only authenticated users can manaage keywords
|
||
|
$authenticated = yourls_is_valid_user();
|
||
|
if ( $authenticated !== true )
|
||
|
return false;
|
||
|
// Admin?
|
||
|
if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ManageUsrsURL ) )
|
||
|
return true;
|
||
|
// Editor?
|
||
|
$owner = authMgrPlus_keyword_owner();
|
||
|
if ( $owner === null ) {
|
||
|
if ( authMgrPlus_have_capability( AuthMgrPlusCapability::ManageAnonURL ) ) {
|
||
|
return true;
|
||
|
} else {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
// Self Edit?
|
||
|
$user = YOURLS_USER;
|
||
|
if ( $owner === $user ) {
|
||
|
if ( authMgrPlus_have_capability( $capability ) ) {
|
||
|
return true;
|
||
|
} else {
|
||
|
return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
// Check keyword ownership
|
||
|
function authMgrPlus_keyword_owner( $keyword ) {
|
||
|
global $ydb;
|
||
|
$table = YOURLS_DB_TABLE_URL;
|
||
|
|
||
|
if (version_compare(YOURLS_VERSION, '1.7.3') >= 0) {
|
||
|
$binds = array( 'keyword' => $keyword );
|
||
|
$sql = "SELECT * FROM `$table` WHERE `keyword` = :keyword";
|
||
|
$result = $ydb->fetchOne($sql, $binds);
|
||
|
} else
|
||
|
$result = $ydb->query("SELECT 1 FROM `$table` WHERE `keyword` = $keyword");
|
||
|
|
||
|
return $result['user'];
|
||
|
}
|
||
|
|
||
|
// Record user info on keyword creation
|
||
|
yourls_add_action( 'insert_link', 'authMgrPlus_insert_link' );
|
||
|
function authMgrPlus_insert_link($actions) {
|
||
|
global $ydb;
|
||
|
|
||
|
$keyword = $actions[2];
|
||
|
$user = YOURLS_USER;
|
||
|
$table = YOURLS_DB_TABLE_URL;
|
||
|
|
||
|
// Insert $keyword against $username
|
||
|
if (version_compare(YOURLS_VERSION, '1.7.3') >= 0) {
|
||
|
$binds = array( 'user' => $user,
|
||
|
'keyword' => $keyword);
|
||
|
$sql = "UPDATE `$table` SET `user` = :user WHERE `keyword` = :keyword";
|
||
|
$result = $ydb->fetchAffected($sql, $binds);
|
||
|
} else {
|
||
|
$result = $ydb->query("UPDATE `$table` SET `user` = $user WHERE `keyword` = $keyword");
|
||
|
}
|
||
|
}
|
||
|
?>
|