243 lines
6.4 KiB
PHP
243 lines
6.4 KiB
PHP
<?php
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trait WPCF7_ConfigValidator_Form {
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/**
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* Runs error detection for the form section.
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*/
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public function validate_form() {
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$section = 'form.body';
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$form = $this->contact_form->prop( 'form' );
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$this->detect_multiple_controls_in_label( $section, $form );
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$this->detect_unavailable_names( $section, $form );
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$this->detect_unavailable_html_elements( $section, $form );
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$this->detect_dots_in_names( $section, $form );
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$this->detect_colons_in_names( $section, $form );
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$this->detect_upload_filesize_overlimit( $section, $form );
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}
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/**
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* Detects errors of multiple form controls in a single label.
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*
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* @link https://contactform7.com/configuration-errors/multiple-controls-in-label/
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*/
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public function detect_multiple_controls_in_label( $section, $content ) {
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$pattern = '%<label(?:[ \t\n]+.*?)?>(.+?)</label>%s';
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if ( preg_match_all( $pattern, $content, $matches ) ) {
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$form_tags_manager = WPCF7_FormTagsManager::get_instance();
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foreach ( $matches[1] as $insidelabel ) {
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$tags = $form_tags_manager->scan( $insidelabel );
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$fields_count = 0;
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foreach ( $tags as $tag ) {
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$is_multiple_controls_container = wpcf7_form_tag_supports(
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$tag->type, 'multiple-controls-container'
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);
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$is_zero_controls_container = wpcf7_form_tag_supports(
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$tag->type, 'zero-controls-container'
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);
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if ( $is_multiple_controls_container ) {
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$fields_count += count( $tag->values );
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if ( $tag->has_option( 'free_text' ) ) {
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$fields_count += 1;
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}
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} elseif ( $is_zero_controls_container ) {
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$fields_count += 0;
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} elseif ( ! empty( $tag->name ) ) {
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$fields_count += 1;
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}
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if ( 1 < $fields_count ) {
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return $this->add_error( $section,
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'multiple_controls_in_label',
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array(
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'message' => __( "Multiple form controls are in a single label element.", 'contact-form-7' ),
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)
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);
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}
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}
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}
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}
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return false;
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}
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/**
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* Detects errors of unavailable form-tag names.
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*
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* @link https://contactform7.com/configuration-errors/unavailable-names/
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*/
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public function detect_unavailable_names( $section, $content ) {
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$public_query_vars = array( 'm', 'p', 'posts', 'w', 'cat',
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'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence',
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'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order',
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'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second',
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'name', 'category_name', 'tag', 'feed', 'author_name', 'static',
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'pagename', 'page_id', 'error', 'attachment', 'attachment_id',
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'subpost', 'subpost_id', 'preview', 'robots', 'taxonomy', 'term',
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'cpage', 'post_type', 'embed',
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);
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$form_tags_manager = WPCF7_FormTagsManager::get_instance();
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$ng_named_tags = $form_tags_manager->filter( $content, array(
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'name' => $public_query_vars,
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) );
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$ng_names = array();
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foreach ( $ng_named_tags as $tag ) {
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$ng_names[] = sprintf( '"%s"', $tag->name );
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}
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if ( $ng_names ) {
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$ng_names = array_unique( $ng_names );
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return $this->add_error( $section,
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'unavailable_names',
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array(
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'message' =>
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/* translators: %names%: a list of form control names */
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__( "Unavailable names (%names%) are used for form controls.", 'contact-form-7' ),
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'params' => array( 'names' => implode( ', ', $ng_names ) ),
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)
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);
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}
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return false;
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}
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/**
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* Detects errors of unavailable HTML elements.
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*
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* @link https://contactform7.com/configuration-errors/unavailable-html-elements/
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*/
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public function detect_unavailable_html_elements( $section, $content ) {
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$pattern = '%(?:<form[\s\t>]|</form>)%i';
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if ( preg_match( $pattern, $content ) ) {
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return $this->add_error( $section,
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'unavailable_html_elements',
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array(
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'message' => __( "Unavailable HTML elements are used in the form template.", 'contact-form-7' ),
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)
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);
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}
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return false;
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}
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/**
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* Detects errors of dots in form-tag names.
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*
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* @link https://contactform7.com/configuration-errors/dots-in-names/
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*/
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public function detect_dots_in_names( $section, $content ) {
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$form_tags_manager = WPCF7_FormTagsManager::get_instance();
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$tags = $form_tags_manager->filter( $content, array(
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'feature' => 'name-attr',
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) );
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foreach ( $tags as $tag ) {
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if ( str_contains( $tag->raw_name, '.' ) ) {
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return $this->add_error( $section,
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'dots_in_names',
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array(
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'message' => __( "Dots are used in form-tag names.", 'contact-form-7' ),
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)
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);
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}
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}
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return false;
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}
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/**
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* Detects errors of colons in form-tag names.
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*
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* @link https://contactform7.com/configuration-errors/colons-in-names/
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*/
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public function detect_colons_in_names( $section, $content ) {
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$form_tags_manager = WPCF7_FormTagsManager::get_instance();
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$tags = $form_tags_manager->filter( $content, array(
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'feature' => 'name-attr',
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) );
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foreach ( $tags as $tag ) {
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if ( str_contains( $tag->raw_name, ':' ) ) {
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return $this->add_error( $section,
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'colons_in_names',
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array(
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'message' => __( "Colons are used in form-tag names.", 'contact-form-7' ),
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)
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);
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}
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}
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return false;
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}
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/**
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* Detects errors of uploadable file size overlimit.
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*
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* @link https://contactform7.com/configuration-errors/upload-filesize-overlimit
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*/
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public function detect_upload_filesize_overlimit( $section, $content ) {
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$upload_max_filesize = ini_get( 'upload_max_filesize' );
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if ( ! $upload_max_filesize ) {
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return false;
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}
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$upload_max_filesize = strtolower( $upload_max_filesize );
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$upload_max_filesize = trim( $upload_max_filesize );
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if ( ! preg_match( '/^(\d+)([kmg]?)$/', $upload_max_filesize, $matches ) ) {
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return false;
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}
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if ( 'k' === $matches[2] ) {
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$upload_max_filesize = (int) $matches[1] * KB_IN_BYTES;
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} elseif ( 'm' === $matches[2] ) {
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$upload_max_filesize = (int) $matches[1] * MB_IN_BYTES;
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} elseif ( 'g' === $matches[2] ) {
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$upload_max_filesize = (int) $matches[1] * GB_IN_BYTES;
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} else {
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$upload_max_filesize = (int) $matches[1];
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}
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$form_tags_manager = WPCF7_FormTagsManager::get_instance();
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$tags = $form_tags_manager->filter( $content, array(
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'basetype' => 'file',
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) );
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foreach ( $tags as $tag ) {
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if ( $upload_max_filesize < $tag->get_limit_option() ) {
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return $this->add_error( $section,
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'upload_filesize_overlimit',
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array(
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'message' => __( "Uploadable file size exceeds PHP’s maximum acceptable size.", 'contact-form-7' ),
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)
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);
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}
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}
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return false;
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}
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}
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