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Editing: sso-loader.php
<?php /** * Plugin Name: SSO * Author: Garth Mortensen, Mike Hansen * Version: 1.0 * License: GPLv2 or later * License URI: http://www.gnu.org/licenses/gpl-2.0.html */ if( ! function_exists( 'sso_check' ) ){ function sso_check(){ if ( ! isset( $_GET['salt'] ) || ! isset( $_GET['nonce'] ) ){ sso_req_login(); } if ( sso_check_blocked() ){ sso_req_login(); } $nonce = esc_attr( $_GET['nonce'] ); $salt = esc_attr( $_GET['salt'] ); $has_epoch = preg_match('/^(.+)-e(\d+)$/', $nonce, $epoch); $expired = ( $has_epoch && (time() - $epoch[2]) > 300 ) ? true : false; if ( ! empty( $_GET['user'] ) ){ $user = esc_attr( $_GET['user'] ); }else{ $user = get_users( array( 'role' => 'administrator', 'number' => 1 ) ); if ( is_array( $user ) && is_a( $user[0], 'WP_User' ) ){ $user = $user[0]; $user = $user->ID; }else{ $user = 0; } } $bounce = ! empty( $_GET['bounce'] ) ? $_GET['bounce'] : ''; $hash = base64_encode( hash( 'sha256', $nonce . $salt, false ) ); $hash = substr( $hash, 0, 64 ); $token = get_option( 'sso_token' ); if ( ! $expired && $token == $hash ) { if ( is_email( $user ) ){ $user = get_user_by( 'email', $user ); }else{ $user = get_user_by( 'id', (int) $user ); } if ( is_a( $user, 'WP_User' ) ){ wp_set_current_user( $user->ID, $user->user_login ); wp_set_auth_cookie( $user->ID ); do_action( 'wp_login', $user->user_login, $user ); wp_safe_redirect( admin_url( $bounce ) ); }else{ sso_req_login(); } }else{ sso_add_failed_attempt(); sso_req_login(); } die(); } } add_action( 'wp_ajax_nopriv_sso-check', 'sso_check' ); add_action( 'wp_ajax_sso-check', 'sso_check' ); if( ! function_exists( 'sso_req_login' ) ){ function sso_req_login(){ wp_safe_redirect( wp_login_url() ); } } if( ! function_exists( 'sso_get_attempt_id' ) ){ function sso_get_attempt_id(){ return 'sso' . esc_url( $_SERVER['REMOTE_ADDR'] ); } } if( ! function_exists( 'sso_add_failed_attempt' ) ){ function sso_add_failed_attempt(){ $attempts = get_transient( sso_get_attempt_id(), 0 ); $attempts ++; set_transient( sso_get_attempt_id(), $attempts, 300 ); } } if( ! function_exists( 'sso_check_blocked' ) ){ function sso_check_blocked(){ $attempts = get_transient( sso_get_attempt_id(), 0 ); if ( $attempts > 4 ){ return true; } return false; } }
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