csrf-token-model.php
2 years ago
csrf-token-view.php
2 years ago
csrf-tools.php
1 week ago
module.php
1 week ago
csrf-tools.php
119 lines
| 1 | <?php |
| 2 | |
| 3 | |
| 4 | namespace JFB_Modules\Security\Csrf; |
| 5 | |
| 6 | use Jet_Form_Builder\Classes\Http\Http_Tools; |
| 7 | use Jet_Form_Builder\Db_Queries\Exceptions\Sql_Exception; |
| 8 | use Jet_Form_Builder\Exceptions\Query_Builder_Exception; |
| 9 | use Jet_Form_Builder\Live_Form; |
| 10 | |
| 11 | // If this file is called directly, abort. |
| 12 | if ( ! defined( 'WPINC' ) ) { |
| 13 | die; |
| 14 | } |
| 15 | |
| 16 | class Csrf_Tools { |
| 17 | |
| 18 | const FIELD = '_jfb_csrf_token'; |
| 19 | |
| 20 | public static function get_field(): string { |
| 21 | // generate new unique token |
| 22 | $csrf = static::generate(); |
| 23 | |
| 24 | // get hashed string with user-agent, ip address & form-id |
| 25 | $client_id = static::client_id( jet_fb_live()->form_id ); |
| 26 | |
| 27 | // delete all old tokens |
| 28 | Csrf_Token_Model::clear(); |
| 29 | |
| 30 | try { |
| 31 | // insert new token if client_id is not exist in table |
| 32 | $token = static::add( $csrf, $client_id ); |
| 33 | } catch ( Sql_Exception $exception ) { |
| 34 | return ''; |
| 35 | } |
| 36 | |
| 37 | return Live_Form::force_render_field( |
| 38 | 'hidden-field', |
| 39 | array( |
| 40 | 'field_value' => $token, |
| 41 | 'name' => self::FIELD, |
| 42 | ) |
| 43 | ); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * @param string $token |
| 48 | * @param string $client_id |
| 49 | * |
| 50 | * New token or existed |
| 51 | * |
| 52 | * @return string |
| 53 | * @throws Sql_Exception |
| 54 | */ |
| 55 | public static function add( string $token, string $client_id ): string { |
| 56 | try { |
| 57 | $row = Csrf_Token_View::by_client( $client_id ); |
| 58 | |
| 59 | $token = $row['token']; |
| 60 | } catch ( Query_Builder_Exception $exception ) { |
| 61 | ( new Csrf_Token_Model() )->insert( |
| 62 | array( |
| 63 | 'token' => $token, |
| 64 | 'client_id' => $client_id, |
| 65 | ) |
| 66 | ); |
| 67 | } |
| 68 | |
| 69 | return $token; |
| 70 | } |
| 71 | |
| 72 | |
| 73 | public static function verify( string $token, string $client_id ): bool { |
| 74 | $where = array( |
| 75 | 'token' => $token, |
| 76 | 'client_id' => $client_id, |
| 77 | ); |
| 78 | try { |
| 79 | Csrf_Token_View::findOne( $where )->query()->query_one(); |
| 80 | } catch ( Query_Builder_Exception $exception ) { |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | return true; |
| 85 | } |
| 86 | |
| 87 | public static function delete( string $token, string $client_id ): int { |
| 88 | $where = array( |
| 89 | 'token' => $token, |
| 90 | 'client_id' => $client_id, |
| 91 | ); |
| 92 | |
| 93 | try { |
| 94 | return Csrf_Token_View::delete( $where ); |
| 95 | } catch ( Query_Builder_Exception $exception ) { |
| 96 | return 0; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | public static function consume( string $token, string $client_id ): bool { |
| 101 | return (bool) static::delete( $token, $client_id ); |
| 102 | } |
| 103 | |
| 104 | public static function generate( int $bytes = 16 ): string { |
| 105 | try { |
| 106 | return \bin2hex( \random_bytes( $bytes ) ); |
| 107 | } catch ( \Exception $e ) { |
| 108 | return uniqid( wp_rand(), true ); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | public static function client_id( $suffix = '' ): string { |
| 113 | $user_agent = Http_Tools::get_user_agent(); |
| 114 | $ip_address = Http_Tools::get_ip_address(); |
| 115 | |
| 116 | return md5( $user_agent . $ip_address . $suffix ); |
| 117 | } |
| 118 | } |
| 119 |