| 1 |
<?php |
| 2 |
|
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namespace HTML_Forms; |
| 4 |
|
| 5 |
class Forms { |
| 6 |
|
| 7 |
|
| 8 |
/** |
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* @var string |
| 10 |
*/ |
| 11 |
private $plugin_file; |
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|
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/** |
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* @var array |
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*/ |
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private $settings; |
| 17 |
|
| 18 |
/** |
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* Forms constructor. |
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* |
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* @param string $plugin_file |
| 22 |
* @param array $settings |
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*/ |
| 24 |
public function __construct( $plugin_file, array $settings ) { |
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$this->plugin_file = $plugin_file; |
| 26 |
$this->settings = $settings; |
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} |
| 28 |
|
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public function hook() { |
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add_action( 'init', array( $this, 'register' ) ); |
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add_action( 'init', array( $this, 'listen_for_submit' ) ); |
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add_action( 'parse_request', array( $this, 'listen_for_preview' ) ); |
| 33 |
add_action( 'wp_enqueue_scripts', array( $this, 'assets' ) ); |
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add_filter( 'hf_form_markup', 'hf_template' ); |
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} |
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|
| 37 |
public function register() { |
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// register post type |
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register_post_type( |
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'html-form', |
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array( |
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'labels' => array( |
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'name' => 'HTML Forms', |
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'singular_name' => 'HTML Form', |
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), |
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'public' => false, |
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'capability_type' => 'form', |
| 48 |
) |
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); |
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|
| 51 |
if ( function_exists( 'register_block_type' ) ) { |
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register_block_type( |
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'html-forms/form', |
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array( |
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'render_callback' => array( $this, 'shortcode' ), |
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) |
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); |
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} |
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|
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add_shortcode( 'hf_form', array( $this, 'shortcode' ) ); |
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} |
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|
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public function assets() { |
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$assets_url = plugins_url( 'assets/', $this->plugin_file ); |
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|
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wp_register_script( 'html-forms', $assets_url . 'js/public.js', array(), HTML_FORMS_VERSION, true ); |
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wp_localize_script( |
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'html-forms', |
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'hf_js_vars', |
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array( |
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'ajax_url' => admin_url( 'admin-ajax.php?action=hf_form_submit' ), |
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) |
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); |
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|
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if ( $this->settings['load_stylesheet'] ) { |
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wp_enqueue_style( 'html-forms', $assets_url . 'css/forms.css', array(), HTML_FORMS_VERSION ); |
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} |
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} |
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|
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/** |
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* @param Form $form |
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* @param array $data |
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* @return string |
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*/ |
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public function validate_form( Form $form, array $data ) { |
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// validate honeypot field |
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$honeypot_key = sprintf( '_hf_h%d', $form->ID ); |
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if ( ! isset( $data[ $honeypot_key ] ) || $data[ $honeypot_key ] !== '' ) { |
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return 'spam'; |
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} |
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|
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// validate size of POST array |
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if ( count( $data ) > $form->get_field_count() && apply_filters( 'hf_validate_form_request_size', true ) ) { |
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return 'spam'; |
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} |
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|
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$was_required = (array) hf_array_get( $data, '_was_required', array() ); |
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$required_fields = $form->get_required_fields(); |
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foreach ( $required_fields as $field_name ) { |
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$value = hf_array_get( $data, $field_name ); |
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if ( empty( $value ) && ! in_array( $field_name, $was_required ) ) { |
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return 'required_field_missing'; |
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} |
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} |
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|
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$email_fields = $form->get_email_fields(); |
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foreach ( $email_fields as $field_name ) { |
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$value = hf_array_get( $data, $field_name ); |
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if ( ! empty( $value ) && ! is_email( $value ) ) { |
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return 'invalid_email'; |
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} |
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} |
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|
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$error_code = ''; |
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|
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/** |
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* This filter allows you to perform your own form validation. The dynamic portion of the hook refers to the form slug. |
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* |
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* Return a non-empty string if you want to raise an error. |
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* Error codes with a specific error message are: "required_field_missing", "invalid_email", and "error" |
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* |
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* @param string $error_code |
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* @param Form $form |
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* @param array $data |
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*/ |
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$error_code = apply_filters( 'hf_validate_form_' . $form->slug, $error_code, $form, $data ); |
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|
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/** |
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* This filter allows you to perform your own form validation. |
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* |
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* Return a non-empty string if you want to raise an error. |
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* Error codes with a specific error message are: "required_field_missing", "invalid_email", and "error" |
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* |
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* @param string $error_code |
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* @param Form $form |
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* @param array $data |
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*/ |
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$error_code = apply_filters( 'hf_validate_form', $error_code, $form, $data ); |
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if ( ! empty( $error_code ) ) { |
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return $error_code; |
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} |
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|
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// all good: no errors! |
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return ''; |
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} |
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|
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/** |
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* Sanitize array with values before saving. Can be called recursively. |
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* |
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* @param mixed $value |
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* @return mixed |
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*/ |
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public function sanitize( $value ) { |
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if ( is_string( $value ) ) { |
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// do nothing if empty string |
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if ( $value === '' ) { |
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return $value; |
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} |
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|
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// strip slashes |
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$value = stripslashes( $value ); |
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|
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// strip all whitespace |
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$value = trim( $value ); |
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|
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// convert & back to & |
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$value = html_entity_decode( $value, ENT_NOQUOTES ); |
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} elseif ( is_array( $value ) || is_object( $value ) ) { |
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$new_value = array(); |
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$vars = is_array( $value ) ? $value : get_object_vars( $value ); |
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|
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// do nothing if empty array or object |
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if ( count( $vars ) === 0 ) { |
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return $value; |
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} |
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|
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foreach ( $vars as $key => $sub_value ) { |
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// strip all whitespace & HTML from keys (!) |
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$key = trim( strip_tags( $key ) ); |
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|
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// sanitize sub value |
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$new_value[ $key ] = $this->sanitize( $sub_value ); |
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} |
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|
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$value = is_object( $value ) ? (object) $new_value : $new_value; |
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} |
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|
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return $value; |
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} |
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|
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/** |
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* @return array |
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*/ |
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public function get_request_data() { |
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$data = $_POST; |
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|
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if ( ! empty( $_FILES ) ) { |
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foreach ( $_FILES as $field_name => $file ) { |
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// only add non-empty files so that required field validation works as expected |
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// upload could still have errored at this point |
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if ( $file['error'] !== UPLOAD_ERR_NO_FILE ) { |
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$data[ $field_name ] = $file; |
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} |
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} |
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} |
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|
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return $data; |
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} |
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|
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public function listen_for_submit() { |
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// only respond to AJAX requests with _hf_form_id set. |
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if ( empty( $_POST['_hf_form_id'] ) |
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|| empty( $_SERVER['HTTP_X_REQUESTED_WITH'] ) |
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|| strtolower( $_SERVER['HTTP_X_REQUESTED_WITH'] ) !== strtolower( 'XMLHttpRequest' ) ) { |
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return; |
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} |
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|
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$data = $this->get_request_data(); |
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$form_id = (int) $data['_hf_form_id']; |
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$form = hf_get_form( $form_id ); |
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$error_code = $this->validate_form( $form, $data ); |
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|
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if ( empty( $error_code ) ) { |
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/** |
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* Filters the field names that should be ignored on the Submission object. |
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* Fields starting with an underscore (_) are ignored by default. |
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* |
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* @param array $names |
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*/ |
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$ignored_field_names = apply_filters( 'hf_ignored_field_names', array() ); |
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|
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// filter out ignored field names |
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foreach ( $data as $key => $value ) { |
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if ( $key[0] === '_' || in_array( $key, $ignored_field_names ) ) { |
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unset( $data[ $key ] ); |
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continue; |
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} |
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|
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// this detects the WPBruiser token field to ensure it isn't stored |
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// CAVEAT: this will detect any non-uppercase string with 2 dashes in the field name and no whitespace in the field value |
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if ( class_exists( 'GoodByeCaptcha' ) && is_string( $key ) && is_string( $value ) && strtoupper( $key ) !== $key && substr_count( $key, '-' ) >= 2 && substr_count( trim( $value ), ' ' ) === 0 ) { |
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unset( $data[ $key ] ); |
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continue; |
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} |
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} |
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|
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// sanitize data: strip tags etc. |
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$data = $this->sanitize( $data ); |
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|
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// save form submission |
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$submission = new Submission(); |
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$submission->form_id = $form_id; |
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$submission->data = $data; |
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$submission->ip_address = ! empty( $_SERVER['REMOTE_ADDR'] ) ? sanitize_text_field( $_SERVER['REMOTE_ADDR'] ) : ''; |
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$submission->user_agent = ! empty( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( $_SERVER['HTTP_USER_AGENT'] ) : ''; |
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$submission->referer_url = ! empty( $_SERVER['HTTP_REFERER'] ) ? sanitize_text_field( $_SERVER['HTTP_REFERER'] ) : ''; |
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$submission->submitted_at = gmdate( 'Y-m-d H:i:s' ); |
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|
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// save submission object so that other form processor have an insert ID to work with (eg file upload) |
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if ( $form->settings['save_submissions'] ) { |
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$submission->save(); |
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} |
| 263 |
|
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/** |
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* General purpose hook that runs before all form actions, so we can still modify the submission object that is passed to actions. |
| 266 |
*/ |
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do_action( 'hf_process_form', $form, $submission ); |
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|
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// re-save submission object for convenience in form processors hooked into hf_process_form |
| 270 |
if ( $form->settings['save_submissions'] ) { |
| 271 |
$submission->save(); |
| 272 |
} |
| 273 |
|
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// process form actions |
| 275 |
if ( isset( $form->settings['actions'] ) ) { |
| 276 |
foreach ( $form->settings['actions'] as $action_settings ) { |
| 277 |
/** |
| 278 |
* Processes the specified form action and passes related data. |
| 279 |
* |
| 280 |
* @param array $action_settings |
| 281 |
* @param Submission $submission |
| 282 |
* @param Form $form |
| 283 |
*/ |
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do_action( 'hf_process_form_action_' . $action_settings['type'], $action_settings, $submission, $form ); |
| 285 |
} |
| 286 |
} |
| 287 |
|
| 288 |
/** |
| 289 |
* General purpose hook after all form actions have been processed for this specific form. The dynamic portion of the hook refers to the form slug. |
| 290 |
* |
| 291 |
* @param Submission $submission |
| 292 |
* @param Form $form |
| 293 |
*/ |
| 294 |
do_action( "hf_form_{$form->slug}_success", $submission, $form ); |
| 295 |
|
| 296 |
/** |
| 297 |
* General purpose hook after all form actions have been processed. |
| 298 |
* |
| 299 |
* @param Submission $submission |
| 300 |
* @param Form $form |
| 301 |
*/ |
| 302 |
do_action( 'hf_form_success', $submission, $form ); |
| 303 |
} else { |
| 304 |
/** |
| 305 |
* General purpose hook for when a form error occurred |
| 306 |
* |
| 307 |
* @param string $error_code |
| 308 |
* @param Form $form |
| 309 |
* @param array $data |
| 310 |
*/ |
| 311 |
do_action( 'hf_form_error', $error_code, $form, $data ); |
| 312 |
} |
| 313 |
|
| 314 |
// Delay response until "wp_loaded" hook to give other plugins a chance to process stuff. |
| 315 |
add_action( |
| 316 |
'wp_loaded', |
| 317 |
function() use ( $error_code, $form, $data ) { |
| 318 |
$response = $this->get_response_for_error_code( $error_code, $form, $data ); |
| 319 |
|
| 320 |
// clear output, some plugin or hooked code might have thrown errors by now. |
| 321 |
if ( ob_get_level() > 0 ) { |
| 322 |
ob_end_clean(); |
| 323 |
} |
| 324 |
|
| 325 |
send_origin_headers(); |
| 326 |
send_nosniff_header(); |
| 327 |
nocache_headers(); |
| 328 |
|
| 329 |
wp_send_json( $response, 200 ); |
| 330 |
exit; |
| 331 |
} |
| 332 |
); |
| 333 |
} |
| 334 |
|
| 335 |
public function listen_for_preview() { |
| 336 |
if ( empty( $_GET['hf_preview_form'] ) || ! current_user_can( 'edit_forms' ) ) { |
| 337 |
return; |
| 338 |
} |
| 339 |
|
| 340 |
try { |
| 341 |
$form = hf_get_form( $_GET['hf_preview_form'] ); |
| 342 |
} catch ( \Exception $e ) { |
| 343 |
return; |
| 344 |
} |
| 345 |
|
| 346 |
show_admin_bar( false ); |
| 347 |
add_filter( 'pre_handle_404', '__return_true' ); |
| 348 |
remove_all_actions( 'template_redirect' ); |
| 349 |
add_action( |
| 350 |
'template_redirect', |
| 351 |
function() use ( $form ) { |
| 352 |
// clear output, some plugin or hooked code might have thrown errors by now. |
| 353 |
if ( ob_get_level() > 0 ) { |
| 354 |
ob_end_clean(); |
| 355 |
} |
| 356 |
|
| 357 |
status_header( 200 ); |
| 358 |
require dirname( $this->plugin_file ) . '/views/form-preview.php'; |
| 359 |
exit; |
| 360 |
} |
| 361 |
); |
| 362 |
} |
| 363 |
|
| 364 |
private function get_response_for_error_code( $error_code, Form $form, $data = array() ) { |
| 365 |
// return success response for empty error code string or spam (to trick bots) |
| 366 |
if ( $error_code === '' || $error_code === 'spam' ) { |
| 367 |
$response = array( |
| 368 |
'message' => array( |
| 369 |
'type' => 'success', |
| 370 |
'text' => $form->get_message( 'success' ), |
| 371 |
), |
| 372 |
'hide_form' => (bool) $form->settings['hide_after_success'], |
| 373 |
); |
| 374 |
|
| 375 |
if ( ! empty( $form->settings['redirect_url'] ) ) { |
| 376 |
$response['redirect_url'] = hf_replace_data_variables( $form->settings['redirect_url'], $data, 'urlencode' ); |
| 377 |
} |
| 378 |
|
| 379 |
return apply_filters( 'hf_form_response', $response, $form, $data ); |
| 380 |
} |
| 381 |
|
| 382 |
// get error message |
| 383 |
$message = $form->get_message( $error_code ); |
| 384 |
if ( empty( $message ) ) { |
| 385 |
$message = $form->get_message( 'error' ); |
| 386 |
} |
| 387 |
|
| 388 |
// return error response |
| 389 |
return array( |
| 390 |
'message' => array( |
| 391 |
'type' => 'warning', |
| 392 |
'text' => $message, |
| 393 |
), |
| 394 |
'error' => $error_code, |
| 395 |
); |
| 396 |
} |
| 397 |
|
| 398 |
public function shortcode( $attributes = array(), $content = '' ) { |
| 399 |
if ( empty( $attributes['slug'] ) && empty( $attributes['id'] ) ) { |
| 400 |
return ''; |
| 401 |
} |
| 402 |
|
| 403 |
$slug_or_id = empty( $attributes['id'] ) ? $attributes['slug'] : $attributes['id']; |
| 404 |
try { |
| 405 |
$form = hf_get_form( $slug_or_id ); |
| 406 |
} catch ( \Exception $e ) { |
| 407 |
if ( ! current_user_can( 'manage_options' ) ) { |
| 408 |
return $content; |
| 409 |
} |
| 410 |
|
| 411 |
return sprintf( '<p><strong>%s</strong> %s</p>', __( 'Error:', 'html-forms' ), sprintf( __( 'No form found with slug %s', 'html-forms' ), $attributes['slug'] ) ); |
| 412 |
} |
| 413 |
|
| 414 |
return $form . $content; |
| 415 |
} |
| 416 |
} |
| 417 |
|
