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pdf-forms-for-wpforms.php
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<?php
/**
* Plugin Name: PDF Forms Filler for WPForms
* Plugin URI: https://pdfformsfiller.org/
* Description: Build WPForms from PDF forms. Get PDFs filled automatically and attached to email messages and/or website responses on form submissions.
* Version: 1.3.0
* Requires at least: 5.4
* Requires PHP: 5.5
* Author: Maximum.Software
* Author URI: https://maximum.software/
* Text Domain: pdf-forms-for-wpforms
* Domain Path: /languages
* License: GPLv3
* License URI: https://www.gnu.org/licenses/gpl-3.0.html
*/
if( ! defined( 'ABSPATH' ) )
return;
require_once untrailingslashit( dirname( __FILE__ ) ) . '/inc/tgm-config.php';
require_once untrailingslashit( dirname( __FILE__ ) ) . '/modules/wrapper.php';
if( ! class_exists('Pdf_Forms_For_WPForms') )
{
class Pdf_Forms_For_WPForms
{
const VERSION = '1.3.0';
const MIN_WPFORMS_VERSION = '1.6.9';
const MAX_WPFORMS_VERSION = '1.9.99';
private static $BLACKLISTED_WPFORMS_VERSIONS = array();
private static $instance = null;
private $pdf_ninja_service = null;
private $service = null;
private $registered_services = false;
private $downloads = null;
private $storage = null;
private $tmp_dir = null;
private $wpforms_mail_attachments = array();
private $need_plaintext_smart_tag_value_flag = false;
private function __construct()
{
add_action( 'admin_notices', array( $this, 'admin_notices' ) );
add_action( 'plugins_loaded', array( $this, 'plugin_init' ) );
add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), array( $this, 'action_links' ) );
register_activation_hook( __FILE__, array( $this, 'plugin_activated' ) );
register_deactivation_hook( __FILE__, array( $this, 'plugin_deactivated' ) );
add_action( 'pdf_forms_for_wpforms_cron', array( $this, 'cron' ) );
}
/**
* Returns a global instance of this class
*/
public static function get_instance()
{
if( ! self::$instance )
self::$instance = new self;
return self::$instance;
}
/**
* Runs after all plugins have been loaded
*/
public function plugin_init()
{
add_action( 'init', array( $this, 'load_textdomain' ) );
add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );
if( ! class_exists('WPForms') || ! defined( 'WPFORMS_VERSION' ) )
return;
add_action( 'wp_ajax_pdf_forms_for_wpforms_get_attachment_data', array( $this, 'wp_ajax_get_attachment_data' ) );
add_action( 'wp_ajax_pdf_forms_for_wpforms_query_page_image', array( $this, 'wp_ajax_query_page_image' ) );
add_action( 'wp_ajax_pdf_forms_for_wpforms_generate_pdf_ninja_key', array( $this, 'wp_ajax_generate_pdf_ninja_key') );
add_action( 'admin_menu', array( $this, 'register_services' ) );
add_filter( 'wpforms_save_form_args', array( $this, 'wpforms_save_form_args' ), 10, 3 );
add_filter( 'wpforms_smarttags_process_value', array( $this, 'plaintext_smart_tag_value_workaround_filter' ), PHP_INT_MAX, 6 );
// fill_pdfs: we can't use wpforms_process_complete (because notifications have already been sent) and wpforms_process because uploaded files haven't been processed yet
add_filter( 'wpforms_process_after_filter', array( $this, 'fill_pdfs' ), 999999, 3 );
add_action( 'wpforms_process_complete', array( $this, 'remove_tmp_dir' ), 99, 0 );
add_filter( 'wpforms_emails_send_email_data', array( $this, 'attach_files' ), 10, 2 );
add_action( 'wpforms_frontend_confirmation_message', array( $this, 'change_confirmation_message'), 10, 4 );
add_filter( 'wpforms_builder_settings_sections', array( $this, 'add_settings_panel' ) );
add_action( 'wpforms_form_settings_panel_content', array( $this, 'add_settings_content' ) );
add_filter( 'cron_schedules', array( $this, 'cron_schedules' ) );
if( $service = $this->get_service() )
{
$service->plugin_init();
if( $service != $this->pdf_ninja_service )
$this->pdf_ninja_service->plugin_init();
}
}
/*
* Loads plugin textdomain
*/
public function load_textdomain()
{
load_plugin_textdomain( 'pdf-forms-for-wpforms', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
}
/*
* Runs after the plugin have been activated/deactivated
*/
public function plugin_activated( $network_wide = false )
{
if( $network_wide )
{
$sites = get_sites( array( 'fields' => 'ids' ) );
foreach( $sites as $id )
{
switch_to_blog( $id );
$this->plugin_activated( false );
restore_current_blog();
}
return;
}
$this->enable_cron();
}
public function plugin_deactivated( $network_deactivating = false )
{
if( $network_deactivating )
{
$sites = get_sites( array( 'fields' => 'ids' ) );
foreach( $sites as $id )
{
switch_to_blog( $id );
$this->plugin_deactivated( false );
restore_current_blog();
}
return;
}
$this->disable_cron();
$this->get_downloads()->set_timeout(0)->delete_old_downloads();
}
/*
* Hook that adds a cron schedule
*/
public function cron_schedules( $schedules )
{
$interval = $this->get_downloads()->get_timeout();
$display = self::replace_tags( __( "Every {interval} seconds", 'pdf-forms-for-wpforms' ), array( 'interval' => $interval ) );
$schedules['pdf_forms_for_wpforms_cron_frequency'] = array(
'interval' => $interval,
'display' => $display
);
return $schedules;
}
/*
* Enables cron
*/
private function enable_cron()
{
$due = wp_next_scheduled( 'pdf_forms_for_wpforms_cron' );
$current_time = time();
$interval = $this->get_downloads()->get_timeout();
if( $due !== false && (
$due < $current_time - ( $interval + 60 ) // cron is not functional
|| $due > $current_time + $interval // interval changed to a smaller value
) )
{
$this->cron(); // run manually
wp_clear_scheduled_hook( 'pdf_forms_for_wpforms_cron' );
$due = false;
}
if( $due === false )
wp_schedule_event( $current_time, 'pdf_forms_for_wpforms_cron_frequency', 'pdf_forms_for_wpforms_cron' );
}
/*
* Disables cron
*/
private function disable_cron()
{
wp_clear_scheduled_hook( 'pdf_forms_for_wpforms_cron' );
}
/**
* Executes scheduled tasks
*/
public function cron()
{
$this->get_downloads()->delete_old_downloads();
}
/**
* Adds plugin action links
*/
public function action_links( $links )
{
$links[] = '<a target="_blank" href="https://wordpress.org/support/plugin/pdf-forms-for-wpforms/">'.esc_html__( "Support", 'pdf-forms-for-wpforms' ).'</a>';
return $links;
}
/**
* Prints admin notices
*/
public function admin_notices()
{
if( ! class_exists('WPForms') || ! defined( 'WPFORMS_VERSION' ) )
{
if( current_user_can( 'activate_plugins' ) )
echo Pdf_Forms_For_WPForms::render_error_notice( 'wpf-not-installed', array(
'label' => esc_html__( "PDF Forms Filler for WPForms Error", 'pdf-forms-for-wpforms' ),
'message' => esc_html__( "The required plugin 'WPForms' version is not installed!", 'pdf-forms-for-wpforms' ),
) );
return;
}
if( ! $this->is_wpf_version_supported( WPFORMS_VERSION ) )
if( current_user_can( 'activate_plugins' ) )
echo Pdf_Forms_For_WPForms::render_warning_notice( 'unsupported-wpf-version-'.WPFORMS_VERSION, array(
'label' => esc_html__( "PDF Forms Filler for WPForms Warning", 'pdf-forms-for-wpforms' ),
'message' =>
self::replace_tags(
esc_html__( "The currently installed version of 'WPForms' plugin ({current-wpforms-version}) may not be supported by the current version of 'PDF Forms Filler for WPForms' plugin ({current-plugin-version}), please switch to 'WPForms' plugin version {supported-wpforms-version} or below to ensure that 'PDF Forms Filler for WPForms' plugin would work correctly.", 'pdf-forms-for-wpforms' ),
array(
'current-wpforms-version' => esc_html( defined( 'WPFORMS_VERSION' ) ? WPFORMS_VERSION : __( "Unknown version", 'pdf-forms-for-wpforms' ) ),
'current-plugin-version' => esc_html( self::VERSION ),
'supported-wpforms-version' => esc_html( self::MAX_WPFORMS_VERSION ),
)
),
) );
if( $service = $this->get_service() )
{
$service->admin_notices();
if( $service != $this->pdf_ninja_service )
$this->pdf_ninja_service->admin_notices();
}
}
/**
* Checks if WPF version is supported
*/
public function is_wpf_version_supported( $version )
{
if( version_compare( $version, self::MIN_WPFORMS_VERSION ) < 0
|| version_compare( $version, self::MAX_WPFORMS_VERSION ) > 0 )
return false;
foreach( self::$BLACKLISTED_WPFORMS_VERSIONS as $blacklisted_version )
if( version_compare( $version, $blacklisted_version ) == 0 )
return false;
return true;
}
/**
* Returns the service module instance
*/
public function get_service()
{
$this->register_services();
if( ! $this->service )
$this->set_service( $this->load_pdf_ninja_service() );
return $this->service;
}
/**
* Sets the service module instance
*/
public function set_service( $service )
{
return $this->service = $service;
}
/**
* Loads and returns the storage module
*/
private function get_storage()
{
if( ! $this->storage )
{
require_once untrailingslashit( dirname( __FILE__ ) ) . '/modules/storage.php';
$this->storage = Pdf_Forms_For_WPForms_Storage::get_instance();
}
return $this->storage;
}
/**
* Loads and returns the downloads module
*/
private function get_downloads()
{
if( ! $this->downloads )
{
require_once untrailingslashit( dirname( __FILE__ ) ) . '/modules/downloads.php';
$this->downloads = Pdf_Forms_For_WPForms_Downloads::get_instance();
}
return $this->downloads;
}
/**
* Registers PDF.Ninja service
*/
public function register_services()
{
if( $this->registered_services )
return;
require_once untrailingslashit( dirname( __FILE__ ) ) . '/modules/service.php';
$this->registered_services = true;
$this->load_pdf_ninja_service();
}
/**
* Loads the Pdf.Ninja service module
*/
private function load_pdf_ninja_service()
{
if( ! $this->pdf_ninja_service )
{
require_once untrailingslashit( dirname( __FILE__ ) ) . '/modules/pdf-ninja.php';
$this->pdf_ninja_service = WPForms_Pdf_Ninja::get_instance();
}
return $this->pdf_ninja_service;
}
/**
* Function for working with metadata
*/
public static function get_meta( $post_id, $key )
{
$value = get_post_meta( $post_id, "pdf-forms-for-wpforms-" . $key, $single=true );
if( $value === '' )
return null;
return $value;
}
/**
* Function for working with metadata
*/
public static function set_meta( $post_id, $key, $value )
{
$oldval = get_post_meta( $post_id, "pdf-forms-for-wpforms-" . $key, true );
if( $oldval !== '' && $value === null)
delete_post_meta( $post_id, "pdf-forms-for-wpforms-" . $key );
else
{
// wp bug workaround
// https://developer.wordpress.org/reference/functions/update_post_meta/#workaround
$fixed_value = wp_slash( $value );
update_post_meta( $post_id, "pdf-forms-for-wpforms-" . $key, $fixed_value, $oldval );
}
return $value;
}
/**
* Function for working with metadata
*/
public static function unset_meta( $post_id, $key )
{
delete_post_meta( $post_id, "pdf-forms-for-wpforms-" . $key );
}
/**
* Hook that runs on user click 'Get New key' button and gets new pdf-ninja key
*/
public function wp_ajax_generate_pdf_ninja_key()
{
try
{
if( ! check_ajax_referer( 'pdf-forms-for-wpforms-ajax-nonce', 'nonce', false ) )
throw new Exception( __( "Nonce mismatch", 'pdf-forms-for-wpforms' ) );
if( ! wpforms_current_user_can( wpforms_get_capability_manage_options() ) )
throw new Exception( __( "Permission denied", 'pdf-forms-for-wpforms' ) );
$service = $this->get_service();
// TODO: get email from form, remove email setting
if( empty( $email = wpforms_setting( WPForms_Pdf_Ninja::VIEW . '-email' ) ) )
$email = null;
else
$email = sanitize_email( $email );
$service->set_key( $key = $service->generate_key( $email ) );
}
catch ( Exception $e )
{
return wp_send_json( array (
'success' => false,
'error_message' => $e->getMessage()
) );
}
wp_send_json_success();
}
const DEFAULT_PDF_OPTIONS = array( 'skip_empty' => false, 'flatten' => false, 'notifications' => array( ), 'confirmations' => array(), 'filename' => "", 'save_directory'=> "" );
/**
* Hook that runs on wpform save action to validate plugin data
*/
public function wpforms_save_form_args( $post, $form_data, $args )
{
try
{
$post_content = json_decode( stripslashes( $post['post_content'] ), true );
if( ! is_array( $post_content ) )
throw new Exception(
__( "Missing post content", 'pdf-forms-for-wpforms' ),
);
// check form settings
if( isset( $post_content['pdf-forms-for-wpforms-form-settings'] ) && isset( $post_content['pdf-forms-for-wpforms-form-settings']['data'] ) )
{
$data = self::decode_form_settings( $post_content['pdf-forms-for-wpforms-form-settings']['data'] );
if( isset( $post_content['settings'] ) )
$wpf_settings = $post_content['settings'];
if( ! is_array( $wpf_settings ) )
$wpf_settings = array();
if( isset( $wpf_settings['notifications'] ) )
$wpf_notifications = $wpf_settings['notifications'];
if( ! is_array( $wpf_notifications ) )
$wpf_notifications = array();
if( isset( $wpf_settings['confirmations'] ) )
$wpf_confirmations = $wpf_settings['confirmations'];
if( ! is_array( $wpf_confirmations ) )
$wpf_confirmations = array();
if( isset( $post_content['fields'] ) )
$wpf_fields = $post_content['fields'];
if( ! is_array( $wpf_fields ) )
$wpf_fields = array();
// check attachments
$attachments = array();
if( isset( $data['attachments'] ) && is_array( $data['attachments'] ) )
{
foreach( $data['attachments'] as $attachment )
{
$attachment_id = $attachment['attachment_id'];
// check permissions
if( ! wpforms_current_user_can( 'edit_post', $attachment_id ) )
continue;
// check options
if( !isset( $attachment['options'] ) || !is_array( $attachment['options'] ) )
$attachment['options'] = array();
else
{
// add missing options
foreach( self::DEFAULT_PDF_OPTIONS as $option_name => $option_value )
{
if( !isset( $attachment['options'][$option_name] ) )
$attachment['options'][$option_name] = $option_value;
}
// remove non-existing options
foreach( $attachment['options'] as $option_name => $option_value )
{
if( !isset( self::DEFAULT_PDF_OPTIONS[$option_name] ) )
unset( $attachment['options'][$option_name] );
}
// check skip_empty to make sure it is a boolean value
if( isset( $attachment['options']['skip_empty'] ) && !is_bool( $attachment['options']['skip_empty'] ) )
$attachment['options']['skip_empty'] = boolval( $attachment['options']['skip_empty'] );
// check flatten to make sure it is a boolean value
if( isset( $attachment['options']['flatten'] ) && !is_bool( $attachment['options']['flatten'] ) )
$attachment['options']['flatten'] = boolval( $attachment['options']['flatten'] );
// check notifications
if( isset( $attachment['options']['notifications'] ) )
{
$option_value = $attachment['options']['notifications'];
if( !is_array( $option_value ) )
$option_value = array();
foreach( $option_value as $notification_id => $notification )
{
// check to make sure this notification is valid
if( ! isset($wpf_notifications[$notification] ) )
unset( $attachment['options']['notifications'][$notification_id] );
}
}
// check confirmations
if( isset( $attachment['options']['confirmations'] ) )
{
$option_value = $attachment['options']['confirmations'];
if( !is_array( $option_value ) )
$option_value = array();
foreach( $option_value as $confirmation_id => $confirmation )
{
// check to make sure this confirmation is valid
if( ! isset( $wpf_confirmations[$confirmation] ) )
unset( $attachment['options']['confirmations'][$confirmation_id] );
}
}
}
$attachments[$attachment_id] = $attachment;
}
}
$data['attachments'] = $attachments;
// process mappings
$mappings = array();
if( isset( $data['mappings'] ) && is_array( $data['mappings'] ) )
{
foreach( $data['mappings'] as $mapping )
{
if( isset( $mapping['wpf_field'] ) && isset( $mapping['pdf_field'] ) )
{
// make sure wpforms field exists
$exists = false;
foreach( $wpf_fields as $field )
if( isset( $field['id'] ) && $field['id'] == $mapping['wpf_field'] )
{
$exists = true;
break;
}
if( ! $exists )
continue;
// TODO: make sure pdf field exists
$mappings[] = array( 'wpf_field' => $mapping['wpf_field'], 'pdf_field' => $mapping['pdf_field'] );
}
if( isset( $mapping['smart_tags'] ) && isset( $mapping['pdf_field'] ) )
{
$mappings[] = array( 'smart_tags' => $mapping['smart_tags'], 'pdf_field' => $mapping['pdf_field'] );
}
}
}
$data['mappings'] = $mappings;
// process embeds
$embeds = array();
if( isset( $data['embeds'] ) && is_array( $data['embeds'] ) )
{
foreach( $data['embeds'] as $embed )
{
if( ! isset( $embed['attachment_id'] ) )
continue;
if( ! isset( $embed['smart_tags'] ) && ! isset( $embed['wpf_field'] ) )
continue;
// make sure attachment exists
if( ! isset( $data['attachments'][ $embed['attachment_id'] ] ) && $embed['attachment_id'] !== 'all' )
continue;
if( isset( $embed['wpf_field'] ) )
{
// make sure wpforms field exists
$exists = false;
foreach( $wpf_fields as $field )
if( isset( $field['id'] ) && $field['id'] == $embed['wpf_field'] )
{
$exists = true;
break;
}
if( ! $exists )
continue;
}
// TODO: make sure pdf page exists
// TODO: check insertion position and size
if( isset( $embed['smart_tags'] ) )
$embed['smart_tags'] = strval( $embed['smart_tags'] );
// TODO: don't reuse user input but create a new array with checked data
$embeds[] = $embed;
}
}
$data['embeds'] = $embeds;
// process value mappings
if( !isset( $data['value_mappings'] ) || !is_array( $data['value_mappings'] ) )
$data['value_mappings'] = array();
else
{
$value_mappings = array();
foreach( $data['value_mappings'] as $value_mapping )
if( isset( $value_mapping['pdf_field'] ) && isset( $value_mapping['wpf_value'] ) && isset( $value_mapping['pdf_value'] ) )
$value_mappings[] = array( 'pdf_field' => $value_mapping['pdf_field'], 'wpf_value' => $value_mapping['wpf_value'], 'pdf_value' => $value_mapping['pdf_value'] );
$data['value_mappings'] = $value_mappings;
}
$post_content['pdf-forms-for-wpforms-form-settings']['data'] = self::encode_form_settings( $data );
}
$post['post_content'] = wpforms_encode( $post_content );
return $post;
}
catch(Exception $e)
{
// TODO: improve error handling via wpforms
wp_send_json_error(
esc_html(
self::replace_tags(
__( "Error saving PDF form data: {error-message} at {error-file}:{error-line}", 'pdf-forms-for-wpforms' ),
array( 'error-message' => $e->getMessage(), 'error-file' => wp_basename( $e->getFile() ), 'error-line' => $e->getLine() )
)
)
);
exit(0);
}
}
/**
* Returns MIME type of the file
*/
public static function get_mime_type( $filepath )
{
if( ! is_file( $filepath ) )
return null;
$mimetype = null;
if( function_exists( 'finfo_open' ) )
{
if( version_compare( phpversion(), "5.3" ) < 0 )
{
$finfo = finfo_open( FILEINFO_MIME );
if( $finfo )
{
$mimetype = finfo_file( $finfo, $filepath );
$mimetype = explode( ";", $mimetype );
$mimetype = reset( $mimetype );
finfo_close( $finfo );
}
}
else
{
$finfo = finfo_open( FILEINFO_MIME_TYPE );
if( $finfo )
{
$mimetype = finfo_file( $finfo, $filepath );
finfo_close( $finfo );
}
}
}
if( ! $mimetype && function_exists( 'mime_content_type' ) )
$mimetype = mime_content_type( $filepath );
// fallback
if( ! $mimetype )
{
$type = wp_check_filetype( $filepath );
if( isset( $type['type'] ) )
$mimetype = $type['type'];
}
if( ! $mimetype )
return 'application/octet-stream';
return $mimetype;
}
/**
* Downloads a file from the given URL and saves the contents to the given filepath, returns mime type via argument
*/
private static function download_file( $url, $filepath, &$mimetype = null )
{
// if this url points to the site, copy the file directly
$site_url = trailingslashit( get_site_url() );
if( substr( $url, 0, strlen( $site_url ) ) == $site_url )
{
$path = substr( $url, strlen( $site_url ) );
$home_path = trailingslashit( realpath( dirname(__FILE__) . '/../../../' ) );
$sourcepath = realpath( $home_path . $path );
if( $home_path && $sourcepath && substr( $sourcepath, 0, strlen( $home_path ) ) == $home_path )
if( is_file( $sourcepath ) )
if( copy( $sourcepath, $filepath ) )
{
$mimetype = self::get_mime_type( $sourcepath );
return;
}
}
$args = array(
'compress' => true,
'decompress' => true,
'timeout' => 100,
'redirection' => 5,
'user-agent' => 'pdf-forms-for-wpforms/' . self::VERSION,
);
$response = wp_remote_get( $url, $args );
if( is_wp_error( $response ) )
throw new Exception(
self::replace_tags(
__( "Failed to download file: {error-message}", 'pdf-forms-for-wpforms' ),
array( 'error-message' => $response->get_error_message() )
)
);
$mimetype = wp_remote_retrieve_header( $response, 'content-type' );
$body = wp_remote_retrieve_body( $response );
if( file_put_contents( $filepath, $body ) === false || ! is_file( $filepath ) )
throw new Exception( __( "Failed to create file", 'pdf-forms-for-wpforms' ) );
}
/**
* Get temporary directory path
*/
public static function get_tmp_path()
{
$upload_dir = wpforms_upload_dir();
$tmp_path = empty( $upload_dir['error'] ) ? ( trailingslashit( $upload_dir['path'] ) . 'tmp' ) : get_temp_dir();
$dir = trailingslashit( $tmp_path ) . 'pdf-forms-for-wpforms';
if( ! is_dir( $dir ) )
{
wp_mkdir_p( $dir );
wpforms_create_index_html_file( $dir );
}
return trailingslashit( $dir );
}
/**
* Creates a temporary directory
*/
public function create_tmp_dir()
{
if( ! $this->tmp_dir )
{
$dir = trailingslashit( self::get_tmp_path() ) . wp_hash( wp_rand() . microtime() );
wp_mkdir_p( $dir );
$this->tmp_dir = trailingslashit( $dir );
}
return $this->tmp_dir;
}
/**
* Removes a temporary directory
*/
public function remove_tmp_dir()
{
if( ! $this->tmp_dir )
return;
// remove files in the directory
$tmp_dir_slash = trailingslashit( $this->tmp_dir );
$files = array_merge( glob( $tmp_dir_slash . '*' ), glob( $tmp_dir_slash . '.*' ) );
while( $file = array_shift( $files ) )
if( is_file( $file ) )
@unlink( $file );
@rmdir( $this->tmp_dir );
$this->tmp_dir = null;
}
/**
* Creates a temporary file path (but not the file itself)
*/
private function create_tmp_filepath( $filename )
{
$uploads_dir = $this->create_tmp_dir();
$filename = sanitize_file_name( $filename );
$filename = wp_unique_filename( $uploads_dir, $filename );
return trailingslashit( $uploads_dir ) . $filename;
}
/**
* Checks if the image MIME type is supported for embedding
*/
private function is_embed_image_format_supported( $mimetype )
{
$supported_mime_types = array(
"image/jpeg",
"image/png",
"image/gif",
"image/tiff",
"image/bmp",
"image/x-ms-bmp",
"image/svg+xml",
"image/webp",
"application/pdf",
);
if( $mimetype )
foreach( $supported_mime_types as $smt )
if( $mimetype === $smt )
return true;
return false;
}
/**
* Used for encoding WPForms form settings data
*/
public static function encode_form_settings( $data )
{
return base64_encode( self::json_encode( $data ) );
}
/**
* Used for decoding WPForms form settings data
*/
public static function decode_form_settings( $data )
{
$form_settings = array();
// we can't use json directly, we have to use encoding without slashes and quotes due to an unnecessary stripslashes() call in wpforms/includes/admin/builder/panels/class-base.php
if( is_array( $base64_decoded = json_decode( base64_decode( $data ), true ) ) )
$form_settings = $base64_decoded;
else
if( is_array( $json_decoded = json_decode( $data, true ) ) )
$form_settings = $json_decoded;
return $form_settings;
}
/**
* Wrapper for WPForms' wpforms_process_smart_tags()
*
* The function wpforms_process_smart_tags() formats smart tag values for HTML output (via `wp_kses_post()`), but we need plain text.
* Additional issue is that the content we are passing into wpforms_process_smart_tags() is plain text mixed with smart tags, but the smart tags will be formatted in HTML.
* So, we need to use a workaround to make sure we get plain text smart tag values.
*/
public function wpforms_process_smart_tags( $content, $form_data, $fields = [], $entry_id = '', $context = '' )
{
// enable flag to convert smart tag values from HTML to plain text
$this->need_plaintext_smart_tag_value_flag = true;
$value = wpforms_process_smart_tags( $content, $form_data, $fields, $entry_id, $context );
// disable conversion
$this->need_plaintext_smart_tag_value_flag = false;
return $value;
}
/**
* Filter the smart tag values late to convert HTML to plain text when we are inside our own wpforms_process_smart_tags call
*/
public function plaintext_smart_tag_value_workaround_filter( $value, $tag_name, $form_data, $fields, $entry_id, $smart_tag_object )
{
if( $this->need_plaintext_smart_tag_value_flag )
return html_entity_decode( strip_tags( $value ), ENT_QUOTES, 'UTF-8' );
else
return $value;
}
/**
* We need to fill the pdf's document fields and then create attachment file and attach them
*/
public function fill_pdfs( $wpforms_fields, $entry, $form_data )
{
try
{
$entry_id = $entry["id"];
$attachments = array();
$mappings = array();
$embeds = array();
$value_mappings = array();
if( isset( $form_data['pdf-forms-for-wpforms-form-settings'] ) && isset( $form_data['pdf-forms-for-wpforms-form-settings']['data'] ) )
{
$form_settings = self::decode_form_settings( $form_data['pdf-forms-for-wpforms-form-settings']['data'] );
if( isset( $form_settings['attachments'] ) && is_array( $form_settings['attachments'] ) )
$attachments = $form_settings['attachments'];
if( isset( $form_settings['mappings'] ) && is_array( $form_settings['mappings'] ) )
$mappings = $form_settings['mappings'];
if( isset( $form_settings['embeds'] ) && is_array( $form_settings['embeds'] ) )
$embeds = $form_settings['embeds'];
if( isset( $form_settings['value_mappings'] ) && is_array( $form_settings['value_mappings'] ))
$value_mappings = $form_settings['value_mappings'];
}
$files = array();
// preprocess embedded images
$embed_files = array();
foreach( $embeds as $id => $embed )
{
$filepath = null;
$filename = null;
$url_mimetype = null;
$url = null;
if( isset( $embed["wpf_field"] ) )
$url = $wpforms_fields[$embed["wpf_field"]]['value'];
if( isset( $embed['smart_tags'] ) )
$url = $this->wpforms_process_smart_tags( $embed["smart_tags"], $form_data, $wpforms_fields, $entry_id );
if( $url != null )
{
if( filter_var( $url, FILTER_VALIDATE_URL ) !== FALSE )
if( substr( $url, 0, 5 ) === 'http:' || substr( $url, 0, 6 ) === 'https:' )
{
$filepath = $this->create_tmp_filepath( 'img_download_'.count($embed_files).'.tmp' );
self::download_file( $url, $filepath, $url_mimetype ); // can throw an exception
$filename = $url;
}
if( substr( $url, 0, 5 ) === 'data:' )
{
$filepath = $this->create_tmp_filepath( 'img_data_'.count($embed_files).'.tmp' );
$filename = $url;
$parsed = self::parse_data_uri( $url );
if( $parsed !== false )
{
$url_mimetype = $parsed['mime'];
if( file_put_contents( $filepath, $parsed['data'] ) === false || ! is_file( $filepath ) )
throw new Exception( __( "Failed to create file", 'pdf-forms-for-wpforms' ) );
}
}
}
if( isset( $embed["wpf_field"] ) )
{
$wpf_field_id = $embed["wpf_field"];
$field = null;
if( isset( $form_data['fields'][$wpf_field_id] ) )
{
$field = $form_data['fields'][$wpf_field_id];
if( is_array( $field ) && $field['type'] == 'file-upload' )
{
$input_name = sprintf( 'wpforms_%d_%d', $entry_id, $field['id'] );
if( $field['style'] == 'modern' && isset( $_POST[$input_name] ) )
{
$raw_files = json_decode( wp_unslash( $_POST[$input_name] ), true );
if( is_array( $raw_files ) && sizeof( $raw_files ) > 0 )
{
// TODO: handle multiple files
$file = reset( $raw_files );
$upload_dir = wpforms_upload_dir();
$upload_path = trailingslashit( $upload_dir['path'] ) . 'tmp';
$upload_filepath = trailingslashit( $upload_path ) . wp_basename( $file['file'] );
// security check
$upload_filepath = realpath( $upload_filepath );
$upload_path = realpath( $upload_path );
if( $upload_filepath !== false && $upload_path !== false
&& substr( $upload_filepath, 0, strlen( $upload_path ) ) === $upload_path )
{
$filepath = $upload_filepath;
$filename = $file['file_user_name'];
}
}
}
else if( ! empty( $_FILES[$input_name] ) )
{
$filepath = $_FILES[$input_name]['tmp_name'];
$filename = $_FILES[$input_name]['name'];
}
}
}
}
if( ! $filepath )
continue;
$file_mimetype = self::get_mime_type( $filepath );
$mimetype_supported = false;
$mimetype = 'unknown';
if( $file_mimetype )
{
$mimetype = $file_mimetype;
// check if MIME type is supported based on file contents
$mimetype_supported = $this->is_embed_image_format_supported( $file_mimetype );
}