| 1 |
<?php |
| 2 |
|
| 3 |
class FrmEntryValidate { |
| 4 |
public static function validate( $values, $exclude = false ) { |
| 5 |
FrmEntry::sanitize_entry_post( $values ); |
| 6 |
$errors = array(); |
| 7 |
|
| 8 |
if ( ! isset($values['form_id']) || ! isset($values['item_meta']) ) { |
| 9 |
$errors['form'] = __( 'There was a problem with your submission. Please try again.', 'formidable' ); |
| 10 |
return $errors; |
| 11 |
} |
| 12 |
|
| 13 |
if ( FrmAppHelper::is_admin() && is_user_logged_in() && ( ! isset( $values[ 'frm_submit_entry_' . $values['form_id'] ] ) || ! wp_verify_nonce( $values[ 'frm_submit_entry_' . $values['form_id'] ], 'frm_submit_entry_nonce' ) ) ) { |
| 14 |
$errors['form'] = __( 'You do not have permission to do that', 'formidable' ); |
| 15 |
} |
| 16 |
|
| 17 |
self::set_item_key( $values ); |
| 18 |
|
| 19 |
$posted_fields = self::get_fields_to_validate( $values, $exclude ); |
| 20 |
|
| 21 |
// Pass exclude value to validate_field function so it can be used for repeating sections |
| 22 |
$args = array( 'exclude' => $exclude ); |
| 23 |
|
| 24 |
foreach ( $posted_fields as $posted_field ) { |
| 25 |
self::validate_field( $posted_field, $errors, $values, $args ); |
| 26 |
unset( $posted_field ); |
| 27 |
} |
| 28 |
|
| 29 |
if ( empty( $errors ) ) { |
| 30 |
self::spam_check( $exclude, $values, $errors ); |
| 31 |
} |
| 32 |
|
| 33 |
$errors = apply_filters( 'frm_validate_entry', $errors, $values, compact( 'exclude' ) ); |
| 34 |
|
| 35 |
return $errors; |
| 36 |
} |
| 37 |
|
| 38 |
private static function set_item_key( &$values ) { |
| 39 |
if ( ! isset( $values['item_key'] ) || $values['item_key'] == '' ) { |
| 40 |
global $wpdb; |
| 41 |
$values['item_key'] = FrmAppHelper::get_unique_key( '', $wpdb->prefix . 'frm_items', 'item_key' ); |
| 42 |
$_POST['item_key'] = $values['item_key']; |
| 43 |
} |
| 44 |
} |
| 45 |
|
| 46 |
private static function get_fields_to_validate( $values, $exclude ) { |
| 47 |
$where = apply_filters( 'frm_posted_field_ids', array( 'fi.form_id' => $values['form_id'] ) ); |
| 48 |
|
| 49 |
// Don't get subfields |
| 50 |
$where['fr.parent_form_id'] = array( null, 0 ); |
| 51 |
|
| 52 |
// Don't get excluded fields (like file upload fields in the ajax validation) |
| 53 |
if ( ! empty( $exclude ) ) { |
| 54 |
$where['fi.type not'] = $exclude; |
| 55 |
} |
| 56 |
|
| 57 |
return FrmField::getAll( $where, 'field_order' ); |
| 58 |
} |
| 59 |
|
| 60 |
public static function validate_field( $posted_field, &$errors, $values, $args = array() ) { |
| 61 |
$defaults = array( |
| 62 |
'id' => $posted_field->id, |
| 63 |
'parent_field_id' => '', // the id of the repeat or embed form |
| 64 |
'key_pointer' => '', // the pointer in the posted array |
| 65 |
'exclude' => array(), // exclude these field types from validation |
| 66 |
); |
| 67 |
$args = wp_parse_args( $args, $defaults ); |
| 68 |
|
| 69 |
if ( empty($args['parent_field_id']) ) { |
| 70 |
$value = isset( $values['item_meta'][ $args['id'] ] ) ? $values['item_meta'][ $args['id'] ] : ''; |
| 71 |
} else { |
| 72 |
// value is from a nested form |
| 73 |
$value = $values; |
| 74 |
} |
| 75 |
|
| 76 |
// Check for values in "Other" fields |
| 77 |
FrmEntriesHelper::maybe_set_other_validation( $posted_field, $value, $args ); |
| 78 |
|
| 79 |
self::maybe_clear_value_for_default_blank_setting( $posted_field, $value ); |
| 80 |
|
| 81 |
// Reset arrays with only one value if it's not a field where array keys need to be preserved |
| 82 |
if ( is_array($value) && count( $value ) == 1 && isset( $value[0] ) ) { |
| 83 |
$value = reset($value); |
| 84 |
} |
| 85 |
|
| 86 |
if ( $posted_field->required == '1' && ! is_array( $value ) && trim( $value ) == '' ) { |
| 87 |
$errors[ 'field' . $args['id'] ] = FrmFieldsHelper::get_error_msg( $posted_field, 'blank' ); |
| 88 |
} else if ( $posted_field->type == 'text' && ! isset( $_POST['item_name'] ) ) { |
| 89 |
$_POST['item_name'] = $value; |
| 90 |
} |
| 91 |
|
| 92 |
if ( $value != '' ) { |
| 93 |
self::validate_url_field( $errors, $posted_field, $value, $args ); |
| 94 |
self::validate_email_field( $errors, $posted_field, $value, $args ); |
| 95 |
self::validate_number_field( $errors, $posted_field, $value, $args ); |
| 96 |
self::validate_phone_field( $errors, $posted_field, $value, $args ); |
| 97 |
} |
| 98 |
|
| 99 |
FrmEntriesHelper::set_posted_value($posted_field, $value, $args); |
| 100 |
|
| 101 |
self::validate_recaptcha($errors, $posted_field, $args); |
| 102 |
|
| 103 |
$errors = apply_filters( 'frm_validate_' . $posted_field->type . '_field_entry', $errors, $posted_field, $value, $args ); |
| 104 |
$errors = apply_filters( 'frm_validate_field_entry', $errors, $posted_field, $value, $args ); |
| 105 |
} |
| 106 |
|
| 107 |
private static function maybe_clear_value_for_default_blank_setting( $field, &$value ) { |
| 108 |
$is_default = ( FrmField::is_option_true_in_object( $field, 'default_blank' ) && $value == $field->default_value ); |
| 109 |
$is_label = false; |
| 110 |
|
| 111 |
if ( ! $is_default ) { |
| 112 |
$position = FrmField::get_option( $field, 'label' ); |
| 113 |
if ( empty( $position ) ) { |
| 114 |
$position = FrmStylesController::get_style_val( 'position', $field->form_id ); |
| 115 |
} |
| 116 |
|
| 117 |
$is_label = ( $position == 'inside' && FrmFieldsHelper::is_placeholder_field_type( $field->type ) && $value == $field->name ); |
| 118 |
} |
| 119 |
|
| 120 |
if ( $is_label || $is_default ) { |
| 121 |
$value = ''; |
| 122 |
} |
| 123 |
} |
| 124 |
|
| 125 |
public static function validate_url_field( &$errors, $field, &$value, $args ) { |
| 126 |
if ( $value == '' || ! in_array( $field->type, array( 'website', 'url', 'image' ) ) ) { |
| 127 |
return; |
| 128 |
} |
| 129 |
|
| 130 |
if ( trim($value) == 'http://' ) { |
| 131 |
$value = ''; |
| 132 |
} else { |
| 133 |
$value = esc_url_raw( $value ); |
| 134 |
$value = preg_match( '/^(https?|ftps?|mailto|news|feed|telnet):/is', $value ) ? $value : 'http://' . $value; |
| 135 |
} |
| 136 |
|
| 137 |
// validate the url format |
| 138 |
if ( ! preg_match('/^http(s)?:\/\/(?:localhost|(?:[\da-z\.-]+\.[\da-z\.-]+))/i', $value) ) { |
| 139 |
$errors[ 'field' . $args['id'] ] = FrmFieldsHelper::get_error_msg( $field, 'invalid' ); |
| 140 |
} |
| 141 |
} |
| 142 |
|
| 143 |
public static function validate_email_field( &$errors, $field, $value, $args ) { |
| 144 |
if ( $value == '' || $field->type != 'email' ) { |
| 145 |
return; |
| 146 |
} |
| 147 |
|
| 148 |
//validate the email format |
| 149 |
if ( ! is_email($value) ) { |
| 150 |
$errors[ 'field' . $args['id'] ] = FrmFieldsHelper::get_error_msg( $field, 'invalid' ); |
| 151 |
} |
| 152 |
} |
| 153 |
|
| 154 |
public static function validate_number_field( &$errors, $field, &$value, $args ) { |
| 155 |
//validate the number format |
| 156 |
if ( $field->type != 'number' ) { |
| 157 |
return; |
| 158 |
} |
| 159 |
|
| 160 |
if ( strpos( $value, ',' ) ) { |
| 161 |
$value = str_replace( ',', '', $value ); |
| 162 |
} |
| 163 |
|
| 164 |
if ( ! is_numeric( $value) ) { |
| 165 |
$errors[ 'field' . $args['id'] ] = FrmFieldsHelper::get_error_msg( $field, 'invalid' ); |
| 166 |
} |
| 167 |
|
| 168 |
// validate number settings |
| 169 |
if ( $value != '' ) { |
| 170 |
$frm_settings = FrmAppHelper::get_settings(); |
| 171 |
// only check if options are available in settings |
| 172 |
if ( $frm_settings->use_html && isset( $field->field_options['minnum'] ) && isset( $field->field_options['maxnum'] ) ) { |
| 173 |
//minnum maxnum |
| 174 |
if ( (float) $value < $field->field_options['minnum'] ) { |
| 175 |
$errors[ 'field' . $args['id'] ] = __( 'Please select a higher number', 'formidable' ); |
| 176 |
} else if ( (float) $value > $field->field_options['maxnum'] ) { |
| 177 |
$errors[ 'field' . $args['id'] ] = __( 'Please select a lower number', 'formidable' ); |
| 178 |
} |
| 179 |
} |
| 180 |
} |
| 181 |
} |
| 182 |
|
| 183 |
public static function validate_phone_field( &$errors, $field, $value, $args ) { |
| 184 |
if ( $field->type == 'phone' || ( $field->type == 'text' && FrmField::is_option_true_in_object( $field, 'format' ) ) ) { |
| 185 |
|
| 186 |
$pattern = self::phone_format( $field ); |
| 187 |
|
| 188 |
if ( ! preg_match( $pattern, $value ) ) { |
| 189 |
$errors[ 'field' . $args['id'] ] = FrmFieldsHelper::get_error_msg( $field, 'invalid' ); |
| 190 |
} |
| 191 |
} |
| 192 |
} |
| 193 |
|
| 194 |
public static function phone_format( $field ) { |
| 195 |
$default_format = '^((\+\d{1,3}(-|.| )?\(?\d\)?(-| |.)?\d{1,5})|(\(?\d{2,6}\)?))(-|.| )?(\d{3,4})(-|.| )?(\d{4})(( x| ext)\d{1,5}){0,1}$'; |
| 196 |
if ( FrmField::is_option_empty( $field, 'format' ) ) { |
| 197 |
$pattern = $default_format; |
| 198 |
} else { |
| 199 |
$pattern = FrmField::get_option( $field, 'format' ); |
| 200 |
} |
| 201 |
|
| 202 |
$pattern = apply_filters( 'frm_phone_pattern', $pattern, $field ); |
| 203 |
|
| 204 |
// Create a regexp if format is not already a regexp |
| 205 |
if ( strpos( $pattern, '^' ) !== 0 ) { |
| 206 |
$pattern = self::create_regular_expression_from_format( $pattern ); |
| 207 |
} |
| 208 |
|
| 209 |
$pattern = '/' . $pattern . '/'; |
| 210 |
return $pattern; |
| 211 |
} |
| 212 |
|
| 213 |
/** |
| 214 |
* Create a regular expression from a phone number format |
| 215 |
* |
| 216 |
* @since 2.02.02 |
| 217 |
* @param string $pattern |
| 218 |
* @return string |
| 219 |
*/ |
| 220 |
private static function create_regular_expression_from_format( $pattern ) { |
| 221 |
$pattern = preg_quote( $pattern ); |
| 222 |
|
| 223 |
// Firefox doesn't like escaped dashes or colons |
| 224 |
$pattern = str_replace( array( '\-', '\:' ), array( '-', ':' ), $pattern ); |
| 225 |
|
| 226 |
// Switch generic values out for their regular expression |
| 227 |
$pattern = preg_replace( '/\d/', '\d', $pattern ); |
| 228 |
$pattern = str_replace( 'a', '[a-z]', $pattern ); |
| 229 |
$pattern = str_replace( 'A', '[A-Z]', $pattern ); |
| 230 |
$pattern = str_replace( '*', 'w', $pattern ); |
| 231 |
$pattern = str_replace( '/', '\/', $pattern ); |
| 232 |
|
| 233 |
if ( strpos( $pattern, '\?' ) !== false ) { |
| 234 |
$parts = explode( '\?', $pattern ); |
| 235 |
$pattern = ''; |
| 236 |
foreach ( $parts as $part ) { |
| 237 |
if ( empty( $pattern ) ) { |
| 238 |
$pattern .= $part; |
| 239 |
} else { |
| 240 |
$pattern .= '(' . $part . ')?'; |
| 241 |
} |
| 242 |
} |
| 243 |
} |
| 244 |
$pattern = '^' . $pattern . '$'; |
| 245 |
|
| 246 |
return $pattern; |
| 247 |
} |
| 248 |
|
| 249 |
public static function validate_recaptcha( &$errors, $field, $args ) { |
| 250 |
if ( $field->type != 'captcha' || FrmAppHelper::is_admin() || apply_filters( 'frm_is_field_hidden', false, $field, stripslashes_deep( $_POST ) ) ) { |
| 251 |
return; |
| 252 |
} |
| 253 |
|
| 254 |
$frm_settings = FrmAppHelper::get_settings(); |
| 255 |
if ( empty( $frm_settings->pubkey ) ) { |
| 256 |
// don't require the captcha if it shouldn't be shown |
| 257 |
return; |
| 258 |
} |
| 259 |
|
| 260 |
if ( ! isset($_POST['g-recaptcha-response']) ) { |
| 261 |
// If captcha is missing, check if it was already verified |
| 262 |
if ( ! isset( $_POST['recaptcha_checked'] ) || ! wp_verify_nonce( $_POST['recaptcha_checked'], 'frm_ajax' ) ) { |
| 263 |
// There was no captcha submitted |
| 264 |
$errors[ 'field' . $args['id'] ] = __( 'The captcha is missing from this form', 'formidable' ); |
| 265 |
} |
| 266 |
return; |
| 267 |
} |
| 268 |
|
| 269 |
$arg_array = array( |
| 270 |
'body' => array( |
| 271 |
'secret' => $frm_settings->privkey, |
| 272 |
'response' => $_POST['g-recaptcha-response'], |
| 273 |
'remoteip' => FrmAppHelper::get_ip_address(), |
| 274 |
), |
| 275 |
); |
| 276 |
$resp = wp_remote_post( 'https://www.google.com/recaptcha/api/siteverify', $arg_array ); |
| 277 |
$response = json_decode(wp_remote_retrieve_body( $resp ), true); |
| 278 |
|
| 279 |
if ( isset( $response['success'] ) && ! $response['success'] ) { |
| 280 |
// What happens when the CAPTCHA was entered incorrectly |
| 281 |
$errors[ 'field' . $args['id'] ] = ( ! isset( $field->field_options['invalid'] ) || $field->field_options['invalid'] == '' ) ? $frm_settings->re_msg : $field->field_options['invalid']; |
| 282 |
} else if ( is_wp_error( $resp ) ) { |
| 283 |
$error_string = $resp->get_error_message(); |
| 284 |
$errors[ 'field' . $args['id'] ] = __( 'There was a problem verifying your recaptcha', 'formidable' ); |
| 285 |
$errors[ 'field' . $args['id'] ] .= ' ' . $error_string; |
| 286 |
} |
| 287 |
} |
| 288 |
|
| 289 |
/** |
| 290 |
* check for spam |
| 291 |
* @param boolean $exclude |
| 292 |
* @param array $values |
| 293 |
* @param array $errors by reference |
| 294 |
*/ |
| 295 |
public static function spam_check( $exclude, $values, &$errors ) { |
| 296 |
if ( ! empty( $exclude ) || ! isset( $values['item_meta'] ) || empty( $values['item_meta'] ) || ! empty( $errors ) ) { |
| 297 |
// only check spam if there are no other errors |
| 298 |
return; |
| 299 |
} |
| 300 |
|
| 301 |
if ( self::is_honeypot_spam() || self::is_spam_bot() ) { |
| 302 |
$errors['spam'] = __( 'Your entry appears to be spam!', 'formidable' ); |
| 303 |
} |
| 304 |
|
| 305 |
if ( self::blacklist_check( $values ) ) { |
| 306 |
$errors['spam'] = __( 'Your entry appears to be blacklist spam!', 'formidable' ); |
| 307 |
} |
| 308 |
|
| 309 |
if ( self::is_akismet_spam( $values ) ) { |
| 310 |
if ( self::is_akismet_enabled_for_user( $values['form_id'] ) ) { |
| 311 |
$errors['spam'] = __( 'Your entry appears to be spam!', 'formidable' ); |
| 312 |
} |
| 313 |
} |
| 314 |
} |
| 315 |
|
| 316 |
private static function is_honeypot_spam() { |
| 317 |
$honeypot_value = FrmAppHelper::get_param( 'frm_verify', '', 'get', 'sanitize_text_field' ); |
| 318 |
return ( $honeypot_value !== '' ); |
| 319 |
} |
| 320 |
|
| 321 |
private static function is_spam_bot() { |
| 322 |
$ip = FrmAppHelper::get_ip_address(); |
| 323 |
return empty( $ip ); |
| 324 |
} |
| 325 |
|
| 326 |
private static function is_akismet_spam( $values ) { |
| 327 |
global $wpcom_api_key; |
| 328 |
return ( is_callable('Akismet::http_post') && ( get_option('wordpress_api_key') || $wpcom_api_key ) && self::akismet( $values ) ); |
| 329 |
} |
| 330 |
|
| 331 |
private static function is_akismet_enabled_for_user( $form_id ) { |
| 332 |
$form = FrmForm::getOne( $form_id ); |
| 333 |
return ( isset( $form->options['akismet'] ) && ! empty( $form->options['akismet'] ) && ( $form->options['akismet'] != 'logged' || ! is_user_logged_in() ) ); |
| 334 |
} |
| 335 |
|
| 336 |
public static function blacklist_check( $values ) { |
| 337 |
if ( ! apply_filters('frm_check_blacklist', true, $values) ) { |
| 338 |
return false; |
| 339 |
} |
| 340 |
|
| 341 |
$mod_keys = trim( get_option( 'blacklist_keys' ) ); |
| 342 |
if ( empty( $mod_keys ) ) { |
| 343 |
return false; |
| 344 |
} |
| 345 |
|
| 346 |
$content = FrmEntriesHelper::entry_array_to_string( $values ); |
| 347 |
if ( empty( $content ) ) { |
| 348 |
return false; |
| 349 |
} |
| 350 |
|
| 351 |
$ip = FrmAppHelper::get_ip_address(); |
| 352 |
$user_agent = FrmAppHelper::get_server_value( 'HTTP_USER_AGENT' ); |
| 353 |
$user_info = self::get_spam_check_user_info( $values ); |
| 354 |
|
| 355 |
return wp_blacklist_check( $user_info['comment_author'], $user_info['comment_author_email'], $user_info['comment_author_url'], $content, $ip, $user_agent ); |
| 356 |
} |
| 357 |
|
| 358 |
/** |
| 359 |
* Check entries for Akismet spam |
| 360 |
* |
| 361 |
* @return boolean true if is spam |
| 362 |
*/ |
| 363 |
public static function akismet( $values ) { |
| 364 |
$content = FrmEntriesHelper::entry_array_to_string( $values ); |
| 365 |
if ( empty( $content ) ) { |
| 366 |
return false; |
| 367 |
} |
| 368 |
|
| 369 |
$datas = array( |
| 370 |
'comment_type' => 'formidable', |
| 371 |
'comment_content' => $content, |
| 372 |
); |
| 373 |
self::parse_akismet_array( $datas, $values ); |
| 374 |
|
| 375 |
$query_string = _http_build_query( $datas, '', '&' ); |
| 376 |
$response = Akismet::http_post( $query_string, 'comment-check' ); |
| 377 |
|
| 378 |
return ( is_array( $response ) && $response[1] == 'true' ); |
| 379 |
} |
| 380 |
|
| 381 |
/** |
| 382 |
* @since 2.0 |
| 383 |
*/ |
| 384 |
private static function parse_akismet_array( &$datas, $values ) { |
| 385 |
self::add_site_info_to_akismet( $datas ); |
| 386 |
self::add_user_info_to_akismet( $datas, $values ); |
| 387 |
self::add_server_values_to_akismet( $datas ); |
| 388 |
} |
| 389 |
|
| 390 |
private static function add_site_info_to_akismet( &$datas ) { |
| 391 |
$datas['blog'] = FrmAppHelper::site_url(); |
| 392 |
$datas['user_ip'] = preg_replace( '/[^0-9., ]/', '', FrmAppHelper::get_ip_address() ); |
| 393 |
$datas['user_agent'] = FrmAppHelper::get_server_value( 'HTTP_USER_AGENT' ); |
| 394 |
$datas['referrer'] = isset( $_SERVER['HTTP_REFERER'] ) ? FrmAppHelper::get_server_value( 'HTTP_REFERER' ) : false; |
| 395 |
$datas['blog_lang'] = get_locale(); |
| 396 |
$datas['blog_charset'] = get_option('blog_charset'); |
| 397 |
|
| 398 |
if ( akismet_test_mode() ) { |
| 399 |
$datas['is_test'] = 'true'; |
| 400 |
} |
| 401 |
} |
| 402 |
|
| 403 |
private static function add_user_info_to_akismet( &$datas, $values ) { |
| 404 |
$user_info = self::get_spam_check_user_info( $values ); |
| 405 |
$datas = $datas + $user_info; |
| 406 |
|
| 407 |
if ( isset( $user_info['user_ID'] ) ) { |
| 408 |
$datas['user_role'] = Akismet::get_user_roles( $user_info['user_ID'] ); |
| 409 |
} |
| 410 |
} |
| 411 |
|
| 412 |
private static function get_spam_check_user_info( $values ) { |
| 413 |
$datas = array(); |
| 414 |
|
| 415 |
if ( is_user_logged_in() ) { |
| 416 |
$user = wp_get_current_user(); |
| 417 |
$datas['user_ID'] = $user->ID; |
| 418 |
$datas['user_id'] = $user->ID; |
| 419 |
$datas['comment_author'] = $user->display_name; |
| 420 |
$datas['comment_author_email'] = $user->user_email; |
| 421 |
$datas['comment_author_url'] = $user->user_url; |
| 422 |
} else { |
| 423 |
$datas['comment_author'] = ''; |
| 424 |
$datas['comment_author_email'] = ''; |
| 425 |
$datas['comment_author_url'] = ''; |
| 426 |
|
| 427 |
$values = array_filter( $values ); |
| 428 |
foreach ( $values as $value ) { |
| 429 |
if ( ! is_array( $value ) ) { |
| 430 |
if ( $datas['comment_author_email'] == '' && strpos( $value, '@' ) && is_email( $value ) ) { |
| 431 |
$datas['comment_author_email'] = $value; |
| 432 |
} elseif ( $datas['comment_author_url'] == '' && strpos( $value, 'http' ) === 0 ) { |
| 433 |
$datas['comment_author_url'] = $value; |
| 434 |
} elseif ( $datas['comment_author'] == '' && ! is_numeric( $value ) && strlen( $value ) < 200 ) { |
| 435 |
$datas['comment_author'] = $value; |
| 436 |
} |
| 437 |
} |
| 438 |
} |
| 439 |
} |
| 440 |
|
| 441 |
return $datas; |
| 442 |
} |
| 443 |
|
| 444 |
private static function add_server_values_to_akismet( &$datas ) { |
| 445 |
foreach ( $_SERVER as $key => $value ) { |
| 446 |
$include_value = is_string( $value ) && ! preg_match( '/^HTTP_COOKIE/', $key ) && preg_match( '/^(HTTP_|REMOTE_ADDR|REQUEST_URI|DOCUMENT_URI)/', $key ); |
| 447 |
|
| 448 |
// Send any potentially useful $_SERVER vars, but avoid sending junk we don't need. |
| 449 |
if ( $include_value ) { |
| 450 |
$datas[ $key ] = $value; |
| 451 |
} |
| 452 |
unset( $key, $value ); |
| 453 |
} |
| 454 |
} |
| 455 |
} |
| 456 |
|
