AJAX.php
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AJAX_Manager.php
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AJAX.php
121 lines
| 1 | <?php |
| 2 | |
| 3 | namespace IAWP_SCOPED\IAWP\AJAX; |
| 4 | |
| 5 | use IAWP_SCOPED\IAWP\Capability_Manager; |
| 6 | use IAWP_SCOPED\IAWP\Migrations; |
| 7 | abstract class AJAX |
| 8 | { |
| 9 | public function __construct() |
| 10 | { |
| 11 | if (\IAWP_SCOPED\iawp_is_pro() || !$this->requires_pro()) { |
| 12 | \add_action('wp_ajax_' . $this->action_name(), [$this, 'intercept_ajax']); |
| 13 | } |
| 14 | } |
| 15 | /** |
| 16 | * This is the direct handler for ajax requests. |
| 17 | * Permissions and nonce values are checked before executing the ajax action_callback function. |
| 18 | * |
| 19 | * @return void |
| 20 | */ |
| 21 | public function intercept_ajax() : void |
| 22 | { |
| 23 | // Todo - Should this be can_edit() instead? |
| 24 | $is_not_migrating = $this->allowed_during_migrations() || !Migrations\Migration::is_migrating(); |
| 25 | $valid_fields = !$this->missing_fields(); |
| 26 | $can_view = Capability_Manager::can_view(); |
| 27 | \check_ajax_referer($this->action_name(), 'nonce'); |
| 28 | if ($is_not_migrating && $valid_fields && $can_view) { |
| 29 | $this->action_callback(); |
| 30 | } else { |
| 31 | \wp_send_json_error(['errorMessage' => 'Unable to process IAWP AJAX request'], 400); |
| 32 | } |
| 33 | \wp_die(); |
| 34 | } |
| 35 | public function get_action_signature() : array |
| 36 | { |
| 37 | $shorthand_name = $this->action_name(); |
| 38 | if (\strpos($this->action_name(), "iawp_") === 0) { |
| 39 | $shorthand_name = \substr($this->action_name(), 5); |
| 40 | } |
| 41 | return [$shorthand_name => ['action' => $this->action_name(), 'nonce' => \wp_create_nonce($this->action_name())]]; |
| 42 | } |
| 43 | /** |
| 44 | * Classes must define an action name for the ajax request |
| 45 | * |
| 46 | * The required nonce for the ajax request will be the action name with a "_nonce" postfix |
| 47 | * Example: "iawp_delete_data" require a "iawp_delete_data_nonce" nonce field |
| 48 | * |
| 49 | * @return string |
| 50 | */ |
| 51 | protected abstract function action_name() : string; |
| 52 | /** |
| 53 | * Classes must define an action callback to run when an ajax request is made |
| 54 | * |
| 55 | * @return void |
| 56 | */ |
| 57 | protected abstract function action_callback() : void; |
| 58 | /** |
| 59 | * Classes can define a set of required fields for an ajax request |
| 60 | * |
| 61 | * @return array |
| 62 | */ |
| 63 | protected function action_required_fields() : array |
| 64 | { |
| 65 | return []; |
| 66 | } |
| 67 | /** |
| 68 | * Override method to allow the AJAX request to run during migrations |
| 69 | * |
| 70 | * @return bool false by default |
| 71 | */ |
| 72 | protected function allowed_during_migrations() : bool |
| 73 | { |
| 74 | return \false; |
| 75 | } |
| 76 | protected function requires_pro() : bool |
| 77 | { |
| 78 | return \false; |
| 79 | } |
| 80 | /** |
| 81 | * Get a field value. This method supports text and arrays. Returns array if no field found. |
| 82 | * |
| 83 | * @param $field |
| 84 | * |
| 85 | * @return array|string|null |
| 86 | */ |
| 87 | protected function get_field($field) |
| 88 | { |
| 89 | if (!\array_key_exists($field, $_POST)) { |
| 90 | return null; |
| 91 | } |
| 92 | $type = \gettype($_POST[$field]); |
| 93 | if ($type == 'array') { |
| 94 | return \rest_sanitize_array($_POST[$field]); |
| 95 | } else { |
| 96 | return \stripslashes(\sanitize_text_field($_POST[$field])); |
| 97 | } |
| 98 | } |
| 99 | protected function get_boolean_field($field) : ?bool |
| 100 | { |
| 101 | if (!\array_key_exists($field, $_POST)) { |
| 102 | return null; |
| 103 | } |
| 104 | $type = \gettype($_POST[$field]); |
| 105 | if ($type === 'string') { |
| 106 | return $_POST[$field] === 'true'; |
| 107 | } else { |
| 108 | return null; |
| 109 | } |
| 110 | } |
| 111 | private function missing_fields() : bool |
| 112 | { |
| 113 | foreach ($this->action_required_fields() as $required_field) { |
| 114 | if (!\array_key_exists($required_field, $_POST)) { |
| 115 | return \true; |
| 116 | } |
| 117 | } |
| 118 | return \false; |
| 119 | } |
| 120 | } |
| 121 |