672 lines
19 KiB
PHP
672 lines
19 KiB
PHP
<?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: 2.3.0
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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 ampRoles {
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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 ampCap {
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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 ShareURL = 'ShareURL';
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const Traceless = 'Traceless';
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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', 'amp_intercept_stats' );
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function amp_intercept_stats() {
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if ( 'YOURLS_PRIVATE_INFOS' === true ) {
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amp_require_capability( ampCap::ViewStats );
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}
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}
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yourls_add_action( 'api', 'amp_intercept_api' );
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function amp_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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amp_require_capability( ampCap::APIu );
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} else {
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amp_require_capability( ampCap::API );
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}
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}
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}
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yourls_add_action( 'auth_successful', function() {
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if( yourls_is_admin() ) amp_intercept_admin();
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} );
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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 amp_intercept_admin() {
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amp_require_capability( ampCap::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'] ) && $_GET['access']=='denied' ) {
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yourls_add_notice('Access Denied');
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}
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// allow manipulation of this list ( be mindfull of extending Auth mp Capability class if needed )
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$action_capability_map = yourls_apply_filter( 'amp_action_capability_map',
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array( 'add' => ampCap::AddURL,
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'delete' => ampCap::DeleteURL,
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'edit_display' => ampCap::EditURL,
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'edit_save' => ampCap::EditURL,
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'activate' => ampCap::ManagePlugins,
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'deactivate' => ampCap::ManagePlugins,
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) );
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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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// Allow some flexability with those boundaries
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$restricted_actions = yourls_apply_filter( 'amp_restricted_ajax_actions',
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array( 'edit_display',
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'edit_save',
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'delete'
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) );
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$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 = amp_manage_keyword( $keyword, $cap_needed );
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} else {
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$do = amp_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 $amp_allowed_plugin_pages;
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if ( amp_have_capability( ampCap::ManagePlugins ) !== true) {
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$r = $_REQUEST['page'];
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if(!in_array($r, $amp_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 ( amp_have_capability( ampCap::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 && amp_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 buttons from link list per short link
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*/
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yourls_add_filter( 'table_add_row_action_array', 'amp_ajax_button_check' );
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function amp_ajax_button_check( $actions, $keyword ) {
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// define the amp capabilities that map to the buttons
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$button_cap_map = array('stats' => ampCap::ViewStats,
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'share' => ampCap::ShareURL,
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'edit' => ampCap::EditURL,
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'delete' => ampCap::DeleteURL,
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);
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$button_cap_map = yourls_apply_filter( 'amp_button_capability_map', $button_cap_map );
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// define restricted buttons
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$restricted_buttons = array('delete', 'edit');
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if ( 'YOURLS_PRIVATE_INFOS' === true )
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$restricted_buttons += ['stats'];
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$restricted_buttons = yourls_apply_filter( 'amp_restricted_buttons', $restricted_buttons );
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// unset any disallowed buttons
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foreach ( $actions as $action => $vars ) {
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$cap_needed = $button_cap_map[$action];
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if ( in_array( $action, $restricted_buttons) )
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$show = amp_manage_keyword( $keyword, $cap_needed );
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else
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$show = amp_have_capability( $cap_needed );
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if (!$show)
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unset( $actions[$action] );
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}
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return $actions;
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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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yourls_add_filter( 'admin_sublinks', 'amp_admin_sublinks' );
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function amp_admin_sublinks( $links ) {
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global $amp_allowed_plugin_pages;
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if( empty( $links['plugins'] ) ) {
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unset($links['plugins']);
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} else {
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if ( amp_have_capability( ampCap::ManagePlugins ) !== true) {
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foreach( $links['plugins'] as $link => $ar ) {
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if(!in_array($link, $amp_allowed_plugin_pages) )
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unset($links['plugins'][$link]);
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}
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}
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sort($links['plugins']);
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}
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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', 'amp_html_append_roles' );
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function amp_html_append_roles( $original ) {
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if ( amp_is_valid_user() ) {
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$listcaps = implode(', ', amp_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 amp_require_capability( $capability ) {
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if ( !amp_have_capability( $capability ) ) {
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// If the user can't view admin interface, return a plain error.
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if ( !amp_have_capability( ampCap::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 amp_have_capability( $capability ) {
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global $amp_anon_capabilities;
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global $amp_role_capabilities;
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global $amp_admin_ipranges;
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global $amp_default_role;
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// Make sure the environment has been setup
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amp_env_check();
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// Check anon capabilities
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$return = in_array( $capability, $amp_anon_capabilities );
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// Check user-role based auth
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if( !$return ) {
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// Only users have roles
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if ( !amp_is_valid_user() ) //XXX
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return false;
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// List capabilities of particular user role
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$user = YOURLS_USER !== false ? YOURLS_USER : NULL;
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$user_caps = array();
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foreach ( $amp_role_capabilities as $rolename => $rolecaps ) {
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if ( amp_user_has_role( $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 ($amp_admin_ipranges as $range) {
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$return = amp_cidr_match( $_SERVER['REMOTE_ADDR'], $range );
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if( $return )
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break;
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}
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}
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if( !$return ) {
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if ( isset( $amp_default_role ) && in_array ($amp_default_role, array_keys( $amp_role_capabilities ) ) ) {
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$default_caps = $amp_role_capabilities [ $amp_default_role ];
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$return = in_array( $capability, $default_caps );
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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 amp_user_has_role( $username, $rolename ) {
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global $amp_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( $amp_role_assignment ) )
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return true;
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// do this the case-insensitive way
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// the entire array was made lowercase in environment check
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$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( $amp_role_assignment ) ) )
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return false;
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$users_in_role = $amp_role_assignment[$rolename];
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return in_array( $username, $users_in_role );
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}
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/********************* KEYWORD OWNERSHIP ************************/
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// Filter out restricted access to keyword data in...
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// Admin list
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yourls_add_filter( 'admin_list_where', 'amp_admin_list_where' );
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function amp_admin_list_where($where) {
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if ( amp_have_capability( ampCap::ViewAll ) )
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return $where; // Allow admin/editor users to see the lot.
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$user = YOURLS_USER !== false ? YOURLS_USER : NULL;
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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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return $where;
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}
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// API stats
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yourls_add_filter( 'api_url_stats', 'amp_api_url_stats' );
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function amp_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($keyword);
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if( ( !defined('YOURLS_PRIVATE_INFOS') || YOURLS_PRIVATE_INFOS !== false )
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&& !amp_access_keyword($keyword) )
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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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else
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return $return;
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}
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// Info pages
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yourls_add_action( 'pre_yourls_infos', 'amp_pre_yourls_infos' );
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function amp_pre_yourls_infos( $keyword ) {
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if( yourls_is_private() && !amp_access_keyword($keyword) ) {
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if ( !amp_is_valid_user() )
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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', 'amp_get_db_stats' );
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function amp_get_db_stats( $return, $where ) {
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if ( amp_have_capability( ampCap::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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$user = YOURLS_USER !== false ? YOURLS_USER : NULL;
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$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, $binds);
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$return = array( 'total_links' => $totals->count, 'total_clicks' => $totals->sum );
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return $return;
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}
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// Fine tune track-me-not
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yourls_add_action('redirect_shorturl', 'amp_tracking');
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function amp_tracking( $u, $k = false ) {
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if( amp_is_valid_user() && ( amp_keyword_owner($k) || amp_have_capability( ampCap::Traceless ) ) ) {
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// No logging
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yourls_add_filter( 'shunt_update_clicks', function( ) { return true; } );
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yourls_add_filter( 'shunt_log_redirect', function( ) { return true; } );
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}
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}
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/********************* HOUSEKEEPING ************************/
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// Validate environment setup
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function amp_env_check() {
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global $amp_anon_capabilities;
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global $amp_role_capabilities;
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global $amp_role_assignment;
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global $amp_admin_ipranges;
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global $amp_allowed_plugin_pages;
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if ( !isset( $amp_anon_capabilities) ) {
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$amp_anon_capabilities = array();
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}
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if ( !isset( $amp_role_capabilities) ) {
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$amp_role_capabilities = array(
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ampRoles::Administrator => array(
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ampCap::ShowAdmin,
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ampCap::AddURL,
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ampCap::EditURL,
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ampCap::DeleteURL,
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ampCap::ShareURL,
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ampCap::Traceless,
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ampCap::ManageAnonURL,
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ampCap::ManageUsrsURL,
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ampCap::ManagePlugins,
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ampCap::API,
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ampCap::APIu,
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ampCap::ViewStats,
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ampCap::ViewAll,
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),
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ampRoles::Editor => array(
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ampCap::ShowAdmin,
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ampCap::AddURL,
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ampCap::EditURL,
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ampCap::DeleteURL,
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ampCap::ShareURL,
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ampCap::Traceless,
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ampCap::ManageAnonURL,
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ampCap::APIu,
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ampCap::ViewStats,
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ampCap::ViewAll,
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),
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ampRoles::Contributor => array(
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ampCap::ShowAdmin,
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ampCap::AddURL,
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ampCap::EditURL,
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ampCap::DeleteURL,
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ampCap::ShareURL,
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ampCap::APIu,
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ampCap::ViewStats,
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),
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);
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}
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if ( !isset( $amp_role_assignment ) ) {
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$amp_role_assignment = array();
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}
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if ( !isset( $amp_admin_ipranges ) ) {
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$amp_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( $amp_allowed_plugin_pages ) ) {
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$amp_allowed_plugin_pages = array(
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);
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}
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// convert role assignment table to lower case if it hasn't been done already
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// this makes searches much easier!
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$amp_role_assignment_lower = array();
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foreach ( $amp_role_assignment as $key => $value ) {
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$t_key = strtolower( $key );
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$t_value = array_map('strtolower', $value);
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$amp_role_assignment_lower[$t_key] = $t_value;
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}
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$amp_role_assignment = $amp_role_assignment_lower;
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unset($amp_role_assignment_lower);
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return true;
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}
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// Activation: add the user column to the URL table if not added
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yourls_add_action( 'activated_authMgrPlus/plugin.php', 'amp_activated' );
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function amp_activated() {
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global $ydb;
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$table = YOURLS_DB_TABLE_URL;
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$sql = "DESCRIBE `".$table."`";
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$results = $ydb->fetchObjects($sql);
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$activated = false;
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foreach($results as $r) {
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if($r->Field == 'user') {
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$activated = true;
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}
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}
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if(!$activated) {
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if ($version) {
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$sql = "ALTER TABLE `".$table."` ADD `user` VARCHAR(255) NULL";
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$insert = $ydb->fetchAffected($sql);
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} else {
|
|
$ydb->query("ALTER TABLE `".$table."` ADD `user` VARCHAR(255) NULL");
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
/***************** HELPER FUNCTIONS ********************/
|
|
|
|
// List currently available capabilities
|
|
function amp_current_capabilities() {
|
|
$current_capabilities = array();
|
|
$all_capabilities = array(
|
|
ampCap::ShowAdmin,
|
|
ampCap::AddURL,
|
|
ampCap::EditURL,
|
|
ampCap::DeleteURL,
|
|
ampCap::ShareURL,
|
|
ampCap::Traceless,
|
|
ampCap::ManageAnonURL,
|
|
ampCap::ManageUsrsURL,
|
|
ampCap::ManagePlugins,
|
|
ampCap::API,
|
|
ampCap::APIu,
|
|
ampCap::ViewStats,
|
|
ampCap::ViewAll,
|
|
);
|
|
|
|
foreach ( $all_capabilities as $cap ) {
|
|
if ( amp_have_capability( $cap ) ) {
|
|
$current_capabilities[] = $cap;
|
|
}
|
|
}
|
|
// allow manipulation of this list ( be mindfull of extending the ampCap class if needed )
|
|
$current_capabilities = yourls_apply_filter( 'amp_current_capabilities', $current_capabilities);
|
|
return $current_capabilities;
|
|
}
|
|
|
|
// Check for IP in a range
|
|
// from: http://stackoverflow.com/questions/594112/matching-an-ip-to-a-cidr-mask-in-php5
|
|
function amp_cidr_match($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 amp_access_keyword( $keyword ) {
|
|
|
|
$users = array( YOURLS_USER !== false ? YOURLS_USER : NULL , NULL );
|
|
$owner = amp_keyword_owner( $keyword );
|
|
if ( amp_have_capability( ampCap::ViewAll ) || in_array( $owner , $users ) )
|
|
return true;
|
|
}
|
|
|
|
// Check user rights to a keyword ( can manage it )
|
|
function amp_manage_keyword( $keyword, $capability ) {
|
|
$return = false; // default is to deny access
|
|
if ( amp_is_valid_user() ) { // only authenticated users can manaage keywords
|
|
$owner = amp_keyword_owner($keyword);
|
|
$user = YOURLS_USER !== false ? YOURLS_USER : NULL;
|
|
if ( amp_have_capability( ampCap::ManageUsrsURL ) // Admin?
|
|
|| ( $owner === NULL && amp_have_capability( ampCap::ManageAnonURL ) ) // Editor?
|
|
|| ( $owner === $user && amp_have_capability( $capability ) ) ) // Self Edit?
|
|
$return = true;
|
|
}
|
|
return $return;
|
|
|
|
}
|
|
|
|
// Check keyword ownership
|
|
function amp_keyword_owner( $keyword ) {
|
|
global $ydb;
|
|
$table = YOURLS_DB_TABLE_URL;
|
|
$binds = array( 'keyword' => $keyword );
|
|
$sql = "SELECT * FROM `$table` WHERE `keyword` = :keyword";
|
|
$result = $ydb->fetchOne($sql, $binds);
|
|
return $result['user'];
|
|
}
|
|
|
|
// Record user info on keyword creation
|
|
yourls_add_action( 'insert_link', 'amp_insert_link' );
|
|
function amp_insert_link($actions) {
|
|
global $ydb;
|
|
|
|
$keyword = $actions[2];
|
|
$user = defined('YOURLS_USER') ? YOURLS_USER : NULL;
|
|
$table = YOURLS_DB_TABLE_URL;
|
|
|
|
// Insert $keyword against $username
|
|
$binds = array( 'user' => $user,
|
|
'keyword' => $keyword);
|
|
$sql = "UPDATE `$table` SET `user` = :user WHERE `keyword` = :keyword";
|
|
$result = $ydb->fetchAffected($sql, $binds);
|
|
}
|
|
|
|
// Quick user validation without triggering hooks
|
|
function amp_is_valid_user() {
|
|
|
|
$valid = defined( 'YOURLS_USER' ) ? true : false;
|
|
|
|
if ( !$valid ) {
|
|
|
|
if ( yourls_is_API()
|
|
&& isset( $_REQUEST['timestamp'] ) && !empty($_REQUEST['timestamp'] )
|
|
&& isset( $_REQUEST['signature'] ) && !empty($_REQUEST['signature'] ) )
|
|
$valid = yourls_check_signature_timestamp();
|
|
elseif ( yourls_is_API()
|
|
&& !isset( $_REQUEST['timestamp'] )
|
|
&& isset( $_REQUEST['signature'] ) && !empty( $_REQUEST['signature'] ) )
|
|
$valid = yourls_check_signature();
|
|
elseif ( isset( $_REQUEST['username'] ) && isset( $_REQUEST['password'] )
|
|
&& !empty( $_REQUEST['username'] ) && !empty( $_REQUEST['password'] ) )
|
|
$valid = yourls_check_username_password();
|
|
elseif ( !yourls_is_API() && isset( $_COOKIE[ yourls_cookie_name() ] ) )
|
|
$valid = yourls_check_auth_cookie();
|
|
}
|
|
|
|
return $valid;
|
|
}
|
|
|
|
yourls_add_action( 'html_footer', 'amp_format_table_javascript' );
|
|
|
|
function amp_format_table_javascript() {
|
|
echo <<<JS
|
|
|
|
<script>
|
|
if($("body").hasClass("index")) {
|
|
document.querySelector("#main_table tfoot th").colSpan = 7;
|
|
document.querySelector("#nourl_found td").colSpan = 7;
|
|
}
|
|
</script>
|
|
|
|
JS;
|
|
}
|
|
|
|
function array_insert($array, $position, $insert_array) {
|
|
$first_array = array_splice($array, 0, $position);
|
|
$array = array_merge($first_array, $insert_array, $array);
|
|
|
|
return $array;
|
|
}
|
|
|
|
yourls_add_filter('table_head_cells', 'amp_username_table_head');
|
|
function amp_username_table_head( $cells ) {
|
|
$user_head = array( 'username' => 'Username' );
|
|
$cells = array_insert($cells, 5, $user_head);
|
|
return $cells;
|
|
}
|
|
|
|
yourls_add_filter('table_add_row_cell_array', 'amp_add_user_row');
|
|
function amp_add_user_row( $cells, $keyword ) {
|
|
$username = amp_keyword_owner($keyword);
|
|
$user_cell = array(
|
|
'username' => array(
|
|
'template' => '%username%',
|
|
'username' => $username,
|
|
)
|
|
);
|
|
$cells = array_insert($cells, 5, $user_cell);
|
|
|
|
return $cells;
|
|
}
|
|
|
|
?>
|