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<?php |
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|
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namespace HTML_Forms; |
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|
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class Forms |
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{ |
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|
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/** |
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* @var string |
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*/ |
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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; |
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|
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/** |
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* Forms constructor. |
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* |
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* @param string $plugin_file |
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* @param array $settings |
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*/ |
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public function __construct($plugin_file, array $settings ) |
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{ |
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$this->plugin_file = $plugin_file; |
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$this->settings = $settings; |
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} |
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|
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public function hook() |
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{ |
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add_action('init', array($this, 'register')); |
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add_action('init', array($this, 'listen')); |
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add_action('wp_enqueue_scripts', array($this, 'assets')); |
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} |
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|
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public function register() |
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{ |
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// register post type |
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register_post_type('html-form', 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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) |
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); |
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|
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add_shortcode('hf_form', array($this, 'shortcode')); |
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|
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// enable shortcodes in text widgets |
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add_filter( 'widget_text', 'shortcode_unautop' ); |
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add_filter( 'widget_text', 'do_shortcode', 11 ); |
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} |
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|
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public function assets() |
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{ |
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$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min'; |
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$assets_url = plugins_url( 'assets/', $this->plugin_file ); |
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|
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wp_enqueue_script('html-forms', $assets_url . "js/public{$suffix}.js", array(), HTML_FORMS_VERSION, true); |
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wp_localize_script('html-forms', 'hf_js_vars', array( |
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'ajax_url' => admin_url('admin-ajax.php'), |
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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', $assets_url . "css/forms{$suffix}.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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private function validate_form(Form $form, array $data) |
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{ |
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// validate honeypot field |
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$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 ) > substr_count( strtolower( $form->get_html() ), 'name=' ) && apply_filters( 'hf_validate_form_request_size', true ) ) { |
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return 'spam'; |
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} |
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|
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$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( $value ) ) { |
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return 'required_field_missing'; |
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} |
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} |
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|
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$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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/** |
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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 = apply_filters( 'hf_validate_form', '', $form, $data ); |
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if( ! empty( $error ) ) { |
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return $error; |
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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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*/ |
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public function sanitize( $value ) |
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{ |
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if (is_string($value)) { |
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// strip all HTML tags & whitespace |
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$value = trim(strip_tags($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( $value ); |
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|
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foreach($vars as $key => $sub_value) { |
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// skip empty values |
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if(empty($sub_value)) { |
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continue; |
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} |
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|
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// sanitize key |
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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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$value = is_object( $value ) ? (object) $new_value : $new_value; |
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} |
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|
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return $value; |
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} |
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|
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public function listen() |
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{ |
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// only respond to AJAX requests with _hf_form_id set. |
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if (empty($_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 = $_POST; |
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$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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// filter out all field names starting with _ |
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foreach( $data as $key => $value ) { |
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if( strpos( $key, '_' ) === 0 ) { |
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unset( $data[$key] ); |
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} |
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} |
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|
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// strip slashes |
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$data = stripslashes_deep( $data ); |
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|
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// sanitize data: strip tags etc. |
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$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 = sanitize_text_field( $_SERVER['REMOTE_ADDR'] ); |
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$submission->user_agent = sanitize_text_field( $_SERVER['HTTP_USER_AGENT'] ); |
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$submission->referer_url = sanitize_text_field( $_SERVER['HTTP_REFERER'] ); |
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$submission->save(); |
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|
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// process form actions |
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foreach( $form->settings['actions'] as $action_settings ) { |
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/** |
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* Processes the specified form action and passes related data. |
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* |
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* @param array $action_settings |
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* @param Submission $submission |
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* @param Form $form |
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*/ |
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do_action('hf_process_form_action_' . $action_settings['type'], $action_settings, $submission, $form ); |
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} |
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|
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/** |
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* General purpose hook after all form actions have been processed. |
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* |
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* @param Submission $submission |
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* @param Form $form |
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*/ |
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do_action( 'hf_form_success', $submission, $form ); |
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} else { |
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|
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/** |
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* General purpose hook for when a form error occurred |
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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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do_action( 'hf_form_error', $error_code, $form, $data ); |
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} |
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|
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$response = $this->get_response_for_error_code( $error_code, $form ); |
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|
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// clear output, some plugin or hooked code might have thrown errors by now. |
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if( ob_get_level() > 0 ) { |
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ob_end_clean(); |
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} |
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|
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send_origin_headers(); |
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send_nosniff_header(); |
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nocache_headers(); |
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|
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wp_send_json($response, 200); |
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exit; |
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} |
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|
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private function get_response_for_error_code( $error_code, Form $form ) |
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{ |
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// return success response for empty error code string or spam (to trick bots) |
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if( $error_code === "" || $error_code === "spam" ) { |
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$response = array( |
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'message' => array( |
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'type' => 'success', |
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'text' => $form->get_message( 'success' ), |
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), |
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'hide_form' => (bool)$form->settings['hide_after_success'], |
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); |
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|
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if (!empty($form->settings['redirect_url'])) { |
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$response['redirect_url'] = $form->settings['redirect_url']; |
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} |
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|
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return $response; |
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} |
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|
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// get error message |
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$message = $form->get_message( $error_code ); |
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if( empty( $message ) ) { |
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$message = $form->get_message( 'error' ); |
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} |
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|
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// return error response |
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return $response = array( |
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'message' => array( |
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'type' => 'warning', |
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'text' => $message, |
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), |
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'error' => $error_code, |
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); |
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} |
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|
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public function shortcode($attributes = array(), $content = '') |
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{ |
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$slug_or_id = empty( $attributes['id'] ) ? $attributes['slug'] : $attributes['id']; |
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|
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try { |
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$form = hf_get_form( $slug_or_id ); |
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} catch( \Exception $e ) { |
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if ( ! current_user_can( 'manage_options' ) ) { |
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return $content; |
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} |
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|
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return sprintf( '<p><strong>%s</strong> %s</p>', __( 'Error:', 'html-forms' ), sprintf( __( 'No form found with slug %s', 'html-forms' ), $attributes['slug'] ) ); |
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} |
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|
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return $form . $content; |
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} |
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} |
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|
