| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* @copyright © Melograno Venture Studio. All rights reserved. |
| 5 |
* @licence See COPYING.md for license details. |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace IvyForms\Common\Sanitizer; |
| 9 |
|
| 10 |
// phpcs:disable PSR1.Files.SideEffects |
| 11 |
if (!defined('ABSPATH')) { |
| 12 |
exit; // Exit if accessed directly |
| 13 |
} |
| 14 |
|
| 15 |
use IvyForms\Common\Exceptions\ForbiddenException; |
| 16 |
use IvyForms\Common\Exceptions\InvalidArgumentException; |
| 17 |
use IvyForms\Services\Field\FieldType; |
| 18 |
use IvyForms\Services\Translations\BackendStrings; |
| 19 |
|
| 20 |
class Sanitizer |
| 21 |
{ |
| 22 |
/** |
| 23 |
* Sanitize HTML editor content with support for inline styles (colors, formatting) |
| 24 |
* |
| 25 |
* @param string $content |
| 26 |
* |
| 27 |
* @return string |
| 28 |
*/ |
| 29 |
/** |
| 30 |
* Sanitize CSS value to prevent XSS attacks while allowing colors |
| 31 |
* |
| 32 |
* @param string $css |
| 33 |
* |
| 34 |
* @return string |
| 35 |
*/ |
| 36 |
private static function sanitizeCssValue(string $css): string |
| 37 |
{ |
| 38 |
// Remove any potential XSS vectors |
| 39 |
$dangerous_patterns = [ |
| 40 |
'/expression\s*\(/i', // IE CSS expressions |
| 41 |
'/javascript\s*:/i', // javascript: protocol |
| 42 |
'/vbscript\s*:/i', // vbscript: protocol |
| 43 |
'/<\s*script/i', // <script> tags |
| 44 |
'/on\w+\s*=/i', // event handlers (onclick, etc) |
| 45 |
'/import\s+/i', // @import |
| 46 |
'/<!--/i', // HTML comments |
| 47 |
'/-->/i', // HTML comments |
| 48 |
'/behavior\s*:/i', // IE behaviors |
| 49 |
'/-moz-binding\s*:/i', // Firefox bindings |
| 50 |
'/\\\\/i', // Backslash escaping |
| 51 |
]; |
| 52 |
|
| 53 |
foreach ($dangerous_patterns as $pattern) { |
| 54 |
if (preg_match($pattern, $css)) { |
| 55 |
error_log('🚨 BLOCKED dangerous CSS pattern: ' . $pattern . ' in: ' . $css); |
| 56 |
return ''; // Block completely if dangerous pattern found |
| 57 |
} |
| 58 |
} |
| 59 |
|
| 60 |
// Validate url() values - only allow data: for images and https:/http: for safe URLs |
| 61 |
$css = preg_replace_callback( |
| 62 |
'/url\s*\(\s*["\']?([^"\')]+)["\']?\s*\)/i', |
| 63 |
function ($matches) { |
| 64 |
$url = trim($matches[1]); |
| 65 |
// Allow only safe protocols |
| 66 |
if (preg_match('/^(https?:|data:image\/)/i', $url)) { |
| 67 |
return 'url("' . esc_url($url) . '")'; |
| 68 |
} |
| 69 |
error_log('🚨 BLOCKED unsafe URL in CSS: ' . $url); |
| 70 |
return ''; // Block unsafe URLs |
| 71 |
}, |
| 72 |
$css |
| 73 |
); |
| 74 |
|
| 75 |
// Escape remaining content but preserve CSS functions like rgb(), rgba(), etc. |
| 76 |
return esc_attr($css); |
| 77 |
} |
| 78 |
|
| 79 |
/** |
| 80 |
* Sanitize HTML editor content with support for inline styles (colors, formatting) |
| 81 |
* |
| 82 |
* @param string $content |
| 83 |
* |
| 84 |
* @return string |
| 85 |
*/ |
| 86 |
public static function sanitizeEditorContent(string $content): string |
| 87 |
{ |
| 88 |
// Extract all style attributes before wp_kses processes them |
| 89 |
$style_placeholders = []; |
| 90 |
$placeholder_index = 0; |
| 91 |
|
| 92 |
$content = preg_replace_callback( |
| 93 |
'/(<[^>]+)\s+style="([^"]*)"/i', |
| 94 |
function ($matches) use (&$style_placeholders, &$placeholder_index) { |
| 95 |
$placeholder = '___STYLE_PLACEHOLDER_' . $placeholder_index . '___'; |
| 96 |
// Sanitize the CSS value for security |
| 97 |
$style_placeholders[$placeholder] = self::sanitizeCssValue( |
| 98 |
$matches[2] |
| 99 |
); |
| 100 |
$placeholder_index++; |
| 101 |
$html = ' data-style-placeholder="' . $placeholder . '"'; |
| 102 |
return $matches[1] . $html; |
| 103 |
}, |
| 104 |
$content |
| 105 |
); |
| 106 |
|
| 107 |
// Define allowed HTML tags and attributes for the editor |
| 108 |
$allowed_tags = wp_kses_allowed_html('post'); |
| 109 |
|
| 110 |
// Add necessary attributes to tags |
| 111 |
$tags_with_style = [ |
| 112 |
'span', |
| 113 |
'p', |
| 114 |
'div', |
| 115 |
'h1', |
| 116 |
'h2', |
| 117 |
'h3', |
| 118 |
'h4', |
| 119 |
'h5', |
| 120 |
'h6', |
| 121 |
'li', |
| 122 |
'ul', |
| 123 |
'ol', |
| 124 |
'blockquote', |
| 125 |
'strong', |
| 126 |
'em', |
| 127 |
'u', |
| 128 |
'a' |
| 129 |
]; |
| 130 |
|
| 131 |
foreach ($tags_with_style as $tag) { |
| 132 |
if (!isset($allowed_tags[$tag])) { |
| 133 |
$allowed_tags[$tag] = []; |
| 134 |
} |
| 135 |
if (!is_array($allowed_tags[$tag])) { |
| 136 |
$allowed_tags[$tag] = []; |
| 137 |
} |
| 138 |
$allowed_tags[$tag]['data-style-placeholder'] = true; |
| 139 |
$allowed_tags[$tag]['class'] = true; |
| 140 |
} |
| 141 |
|
| 142 |
// Ensure 'a' tag has all necessary attributes |
| 143 |
if (!isset($allowed_tags['a'])) { |
| 144 |
$allowed_tags['a'] = []; |
| 145 |
} |
| 146 |
$allowed_tags['a']['href'] = true; |
| 147 |
$allowed_tags['a']['target'] = true; |
| 148 |
$allowed_tags['a']['rel'] = true; |
| 149 |
$allowed_tags['a']['class'] = true; |
| 150 |
$allowed_tags['a']['data-style-placeholder'] = true; |
| 151 |
|
| 152 |
// Sanitize HTML structure (but style content is preserved in placeholders) |
| 153 |
$result = wp_kses($content, $allowed_tags); |
| 154 |
|
| 155 |
// Restore style attributes from placeholders |
| 156 |
$result = preg_replace_callback( |
| 157 |
'/data-style-placeholder="(___STYLE_PLACEHOLDER_\d+___)"/i', |
| 158 |
function ($matches) use ($style_placeholders) { |
| 159 |
$placeholder = $matches[1]; |
| 160 |
if (isset($style_placeholders[$placeholder])) { |
| 161 |
$sanitized_style = $style_placeholders[$placeholder]; |
| 162 |
// Only add style attribute if there's actual content |
| 163 |
if (!empty($sanitized_style)) { |
| 164 |
return 'style="' . $sanitized_style . '"'; |
| 165 |
} |
| 166 |
} |
| 167 |
return ''; |
| 168 |
}, |
| 169 |
$result |
| 170 |
); |
| 171 |
|
| 172 |
|
| 173 |
return $result; |
| 174 |
} |
| 175 |
|
| 176 |
/** |
| 177 |
* Sanitize form action buttons settings |
| 178 |
* |
| 179 |
* @param mixed[] $settings |
| 180 |
* |
| 181 |
* @return mixed[] |
| 182 |
*/ |
| 183 |
public static function sanitizeFormActionButtons(array $settings): array |
| 184 |
{ |
| 185 |
$submitButtonSettings = $settings['submitButtonSettings'] ?? []; |
| 186 |
$validPositions = ['default', 'left', 'center', 'right']; |
| 187 |
$position = $submitButtonSettings['position'] ?? 'default'; |
| 188 |
|
| 189 |
// Validate position |
| 190 |
if (!in_array($position, $validPositions, true)) { |
| 191 |
$position = 'default'; |
| 192 |
} |
| 193 |
|
| 194 |
return [ |
| 195 |
'submitButtonSettings' => [ |
| 196 |
'label' => sanitize_text_field( |
| 197 |
$submitButtonSettings['label'] ?? BackendStrings::getCommonStrings()['submit'] |
| 198 |
), |
| 199 |
'position' => $position |
| 200 |
] |
| 201 |
]; |
| 202 |
} |
| 203 |
|
| 204 |
/** |
| 205 |
* Sanitize all form data |
| 206 |
* |
| 207 |
* @param mixed[] $data |
| 208 |
* |
| 209 |
* @return mixed[] |
| 210 |
* @throws InvalidArgumentException |
| 211 |
*/ |
| 212 |
public static function sanitizeFormData(array $data): array |
| 213 |
{ |
| 214 |
$fields = $data['fields'] ?? []; |
| 215 |
return [ |
| 216 |
'id' => (int)($data['id'] ?? 0), |
| 217 |
'name' => sanitize_text_field($data['name'] ?? ''), |
| 218 |
'description' => sanitize_text_field($data['description'] ?? ''), |
| 219 |
'showTitle' => (bool)($data['showTitle'] ?? false), |
| 220 |
'published' => (bool)($data['published'] ?? false), |
| 221 |
'showDescription' => (bool)($data['showDescription'] ?? false), |
| 222 |
'storeEntries' => (bool)($data['storeEntries'] ?? false), |
| 223 |
'fields' => self::sanitizeFields($fields), |
| 224 |
'integrationSettings' => self::sanitizeIntegrationSettings( |
| 225 |
$data['integrationSettings'] ?? [] |
| 226 |
), |
| 227 |
'formActionButtons' => self::sanitizeFormActionButtons( |
| 228 |
$data['formActionButtons'] ?? [] |
| 229 |
) |
| 230 |
]; |
| 231 |
} |
| 232 |
/** |
| 233 |
* Sanitize all notification data |
| 234 |
* |
| 235 |
* @param mixed[] $data |
| 236 |
* |
| 237 |
* @return mixed[] |
| 238 |
*/ |
| 239 |
public static function sanitizeNotificationData(array $data): array |
| 240 |
{ |
| 241 |
return [ |
| 242 |
'id' => (int)($data['id'] ?? 0), |
| 243 |
'name' => sanitize_text_field($data['name'] ?? ''), |
| 244 |
'sender' => self::sanitizeEmailOrPlaceholder($data['sender'] ?? ''), |
| 245 |
'replyTo' => self::sanitizeEmailOrPlaceholder($data['replyTo'] ?? ''), |
| 246 |
'receiver' => self::sanitizeEmailOrPlaceholder($data['receiver'] ?? ''), |
| 247 |
'enabled' => (bool)($data['enabled'] ?? true), |
| 248 |
'subject' => sanitize_text_field($data['subject'] ?? ''), |
| 249 |
'message' => self::sanitizeEditorContent($data['message'] ?? ''), |
| 250 |
'smartLogic' => (bool)($data['smartLogic'] ?? false), |
| 251 |
'formId' => (int)($data['formId'] ?? 0), |
| 252 |
]; |
| 253 |
} |
| 254 |
/** |
| 255 |
* Sanitize all confirmation data |
| 256 |
* |
| 257 |
* @param mixed[] $data |
| 258 |
* |
| 259 |
* @return mixed[] |
| 260 |
*/ |
| 261 |
public static function sanitizeConfirmationData(array $data): array |
| 262 |
{ |
| 263 |
return [ |
| 264 |
'id' => (int)($data['id'] ?? 0), |
| 265 |
'formId' => (int)($data['formId'] ?? 0), |
| 266 |
'type' => sanitize_text_field($data['type'] ?? ''), |
| 267 |
'enabled' => (bool)($data['enabled'] ?? true), |
| 268 |
'showForm' => (bool)($data['showForm'] ?? false), |
| 269 |
'message' => self::sanitizeEditorContent($data['message'] ?? ''), |
| 270 |
'url' => sanitize_url( |
| 271 |
isset($data['url']) ? urldecode($data['url']) : '' |
| 272 |
), |
| 273 |
'page' => sanitize_text_field($data['page'] ?? ''), |
| 274 |
]; |
| 275 |
} |
| 276 |
|
| 277 |
/** |
| 278 |
* Sanitize form fields |
| 279 |
* |
| 280 |
* @param mixed[] $fields |
| 281 |
* |
| 282 |
* @return mixed[] |
| 283 |
* @throws InvalidArgumentException |
| 284 |
*/ |
| 285 |
private static function sanitizeFields(array $fields): array |
| 286 |
{ |
| 287 |
return array_map(function ($field) { |
| 288 |
// Validate field type |
| 289 |
$fieldType = sanitize_text_field($field['type'] ?? ''); |
| 290 |
if (!FieldType::isValid($field['type'])) { |
| 291 |
throw new InvalidArgumentException( |
| 292 |
BackendStrings::getExceptionStrings()['invalid_field_type'] |
| 293 |
); |
| 294 |
} |
| 295 |
|
| 296 |
$sanitizedField = [ |
| 297 |
'id' => (int)($field['id'] ?? 0), |
| 298 |
'fieldIndex' => (int)($field['fieldIndex'] ?? 0), |
| 299 |
'type' => $fieldType, |
| 300 |
'label' => sanitize_text_field($field['label'] ?? ''), |
| 301 |
'required' => (bool)($field['required'] ?? false), |
| 302 |
'defaultValue' => sanitize_text_field($field['defaultValue'] ?? ''), |
| 303 |
'placeholder' => sanitize_text_field($field['placeholder'] ?? ''), |
| 304 |
'position' => (int)($field['position'] ?? 0), |
| 305 |
'rowIndex' => max(0, (int)($field['rowIndex'] ?? 0)), |
| 306 |
'columnIndex' => max(0, min(4, (int)($field['columnIndex'] ?? 0))), |
| 307 |
'width' => max(20, min(100, (int)($field['width'] ?? 100))), |
| 308 |
'parentId' => isset($field['parentId']) ? max(0, (int)$field['parentId']) : null, |
| 309 |
'hideLabel' => (bool)($field['hideLabel'] ?? false), |
| 310 |
'readOnly' => (bool)($field['readOnly'] ?? false), |
| 311 |
'description' => sanitize_text_field($field['description'] ?? ''), |
| 312 |
'requiredMessage' => sanitize_text_field($field['requiredMessage'] ?? ''), |
| 313 |
'cssClasses' => sanitize_text_field($field['cssClasses'] ?? ''), |
| 314 |
'fieldOptions' => self::sanitizeFieldOptions($field['fieldOptions'] ?? []), |
| 315 |
'shuffleOptions' => (bool)($field['shuffleOptions'] ?? false), |
| 316 |
'showValues' => (bool)($field['showValues'] ?? false), |
| 317 |
'enableSearch' => (bool)($field['enableSearch'] ?? false), |
| 318 |
'rows' => (int)($field['rows'] ?? 0), |
| 319 |
'confirmFieldEnabled' => (bool)($field['confirmFieldEnabled'] ?? false), |
| 320 |
'confirmFieldLabel' => sanitize_text_field($field['confirmFieldLabel'] ?? ''), |
| 321 |
'confirmFieldPlaceholder' => sanitize_text_field($field['confirmFieldPlaceholder'] ?? ''), |
| 322 |
'confirmFieldHideLabel' => (bool)($field['confirmFieldHideLabel'] ?? false), |
| 323 |
'phoneFormat' => self::sanitizePhoneFormat($field['phoneFormat'] ?? ''), |
| 324 |
'phoneAutoDetect' => (bool)($field['phoneAutoDetect'] ?? false), |
| 325 |
'minValue' => self::sanitizeNumericValue($field['minValue'] ?? null), |
| 326 |
'maxValue' => self::sanitizeNumericValue($field['maxValue'] ?? null), |
| 327 |
'step' => (float)($field['step'] ?? 1.0), |
| 328 |
'numberFormat' => sanitize_text_field($field['numberFormat'] ?? ''), |
| 329 |
'visible' => (bool)($field['visible'] ?? true), |
| 330 |
'limitMaxLength' => (bool)($field['limitMaxLength'] ?? false), |
| 331 |
'maxLength' => (int)($field['maxLength'] ?? 255), |
| 332 |
'customValidationMessage' => sanitize_text_field($field['customValidationMessage'] ?? ''), |
| 333 |
'labelPosition' => sanitize_text_field($field['labelPosition'] ?? 'default'), |
| 334 |
'noDuplicates' => (bool)($field['noDuplicates'] ?? false), |
| 335 |
'inputPrefix' => sanitize_text_field($field['inputPrefix'] ?? ''), |
| 336 |
'inputSuffix' => sanitize_text_field($field['inputSuffix'] ?? ''), |
| 337 |
'timeFieldType' => sanitize_text_field($field['timeFieldType'] ?? ''), |
| 338 |
'timeFormat' => sanitize_text_field($field['timeFormat'] ?? ''), |
| 339 |
'dateFieldType' => sanitize_text_field($field['dateFieldType'] ?? ''), |
| 340 |
'dateFormat' => sanitize_text_field($field['dateFormat'] ?? ''), |
| 341 |
'minDateValue' => sanitize_text_field($field['minDateValue'] ?? ''), |
| 342 |
'maxDateValue' => sanitize_text_field($field['maxDateValue'] ?? ''), |
| 343 |
]; |
| 344 |
|
| 345 |
/** |
| 346 |
* This filter allows to sanitize form fields properties |
| 347 |
* for fields that are not part of the core plugin. |
| 348 |
* |
| 349 |
* @since 0.1.0 |
| 350 |
* |
| 351 |
* @param mixed[] $sanitizedField The sanitized field data so far. |
| 352 |
* @param mixed[] $field The original field data before sanitization. |
| 353 |
* @return mixed[] The modified sanitized field data. |
| 354 |
*/ |
| 355 |
return apply_filters('ivyforms/sanitizer/field_properties', $sanitizedField, $field); |
| 356 |
}, $fields); |
| 357 |
} |
| 358 |
|
| 359 |
/** |
| 360 |
* Sanitize field options |
| 361 |
* |
| 362 |
* @param mixed[] $options |
| 363 |
* |
| 364 |
* @return mixed[] |
| 365 |
*/ |
| 366 |
private static function sanitizeFieldOptions(array $options): array |
| 367 |
{ |
| 368 |
return array_map(function ($option) { |
| 369 |
return [ |
| 370 |
'id' => (int)($option['id'] ?? 0), |
| 371 |
'fieldId' => (int)($option['fieldId'] ?? 0), |
| 372 |
'label' => sanitize_text_field($option['label'] ?? ''), |
| 373 |
'value' => sanitize_text_field($option['value'] ?? ''), |
| 374 |
'isDefault' => (bool)($option['isDefault'] ?? false), |
| 375 |
'position' => (int)($option['position'] ?? 1), |
| 376 |
]; |
| 377 |
}, $options); |
| 378 |
} |
| 379 |
|
| 380 |
private static function sanitizePhoneFormat(string $format): string |
| 381 |
{ |
| 382 |
$allowed = ['international','national','e164']; |
| 383 |
$formatLower = strtolower($format); |
| 384 |
return in_array($formatLower, $allowed, true) ? $formatLower : ''; |
| 385 |
} |
| 386 |
|
| 387 |
/** |
| 388 |
* Sanitize entry data |
| 389 |
* |
| 390 |
* @param mixed[] $data |
| 391 |
* |
| 392 |
* @return mixed[] |
| 393 |
*/ |
| 394 |
public static function sanitizeEntryData(array $data): array |
| 395 |
{ |
| 396 |
return [ |
| 397 |
'id' => (int)($data['id'] ?? 0), |
| 398 |
'formId' => (int)($data['formId'] ?? 0), |
| 399 |
'userId' => (int)($data['userId'] ?? 0), |
| 400 |
'status' => sanitize_text_field($data['status'] ?? ''), |
| 401 |
'ipAddress' => sanitize_text_field($data['ipAddress'] ?? ''), |
| 402 |
'userAgent' => sanitize_text_field($data['userAgent'] ?? ''), |
| 403 |
'sourceURL' => sanitize_text_field($data['sourceURL'] ?? ''), |
| 404 |
'dateCreated' => sanitize_text_field($data['dateCreated'] ?? ''), |
| 405 |
'dateEdited' => sanitize_text_field($data['dateEdited'] ?? ''), |
| 406 |
'starred' => (bool)($data['starred'] ?? false), |
| 407 |
]; |
| 408 |
} |
| 409 |
|
| 410 |
/** |
| 411 |
* Sanitize ID |
| 412 |
* |
| 413 |
* @param int $id |
| 414 |
* |
| 415 |
* @return int |
| 416 |
* |
| 417 |
* @throws InvalidArgumentException |
| 418 |
*/ |
| 419 |
public static function sanitizeId(int $id): int |
| 420 |
{ |
| 421 |
if ($id <= 0) { |
| 422 |
throw new InvalidArgumentException( |
| 423 |
BackendStrings::getExceptionStrings()['invalid_id'] |
| 424 |
); |
| 425 |
} |
| 426 |
|
| 427 |
return $id; |
| 428 |
} |
| 429 |
|
| 430 |
/** |
| 431 |
* Sanitize multiple IDs |
| 432 |
* |
| 433 |
* @param int[] $ids |
| 434 |
* |
| 435 |
* @return int[] |
| 436 |
* |
| 437 |
*/ |
| 438 |
public static function sanitizeIds(array $ids): array |
| 439 |
{ |
| 440 |
return array_map(function ($id) { |
| 441 |
return (int)$id; |
| 442 |
}, $ids); |
| 443 |
} |
| 444 |
|
| 445 |
/** |
| 446 |
* Sanitize search parameters |
| 447 |
* |
| 448 |
* @param array<string, mixed> $params |
| 449 |
* |
| 450 |
* @return array<string, mixed> |
| 451 |
* @throws InvalidArgumentException |
| 452 |
*/ |
| 453 |
public static function sanitizeSearchParams(array $params): array |
| 454 |
{ |
| 455 |
$filters = [ |
| 456 |
'starred' => array_key_exists('starred', $params['filters'] ?? []) |
| 457 |
? (int)filter_var($params['filters']['starred'], FILTER_VALIDATE_BOOLEAN) |
| 458 |
: null, |
| 459 |
'published' => array_key_exists('published', $params['filters'] ?? []) |
| 460 |
? (int)filter_var($params['filters']['published'], FILTER_VALIDATE_BOOLEAN) |
| 461 |
: null, |
| 462 |
'status' => sanitize_text_field($params['filters']['read'] ?? ''), |
| 463 |
]; |
| 464 |
// Add formId to filters if present and valid |
| 465 |
if ( |
| 466 |
isset($params['filters']['formId']) && |
| 467 |
is_numeric($params['filters']['formId']) && |
| 468 |
(int)$params['filters']['formId'] > 0 |
| 469 |
) { |
| 470 |
$filters['formId'] = self::sanitizeId((int)$params['filters']['formId']); |
| 471 |
} |
| 472 |
return [ |
| 473 |
'page' => max((int)($params['page'] ?? 1), 1), |
| 474 |
'perPage' => max((int)($params['perPage'] ?? 10), 1), |
| 475 |
'search' => sanitize_text_field($params['search'] ?? ''), |
| 476 |
'orderBy' => sanitize_text_field($params['orderBy'] ?? 'id'), |
| 477 |
'order' => strtolower(sanitize_text_field($params['order'] ?? 'asc')) === 'desc' ? 'desc' : 'asc', |
| 478 |
'filters' => $filters, |
| 479 |
'dateRange' => [ |
| 480 |
sanitize_text_field($params['dateRange'][0] ?? ''), |
| 481 |
sanitize_text_field($params['dateRange'][1] ?? ''), |
| 482 |
], |
| 483 |
'shouldGetCount' => (bool)($params['shouldGetCount'] ?? false), |
| 484 |
'searchFieldValue' => filter_var($params['searchFieldValue'] ?? false, FILTER_VALIDATE_BOOLEAN), |
| 485 |
]; |
| 486 |
} |
| 487 |
|
| 488 |
/** |
| 489 |
* Sanitize form submission data based on field types and IDs |
| 490 |
* |
| 491 |
* @param mixed[] $data Form submission data |
| 492 |
* @param mixed[] $formFields Form fields configuration |
| 493 |
* |
| 494 |
* @return mixed[] Sanitized submission data |
| 495 |
*/ |
| 496 |
public static function sanitizeFormSubmissionData(array $data, array $formFields): array |
| 497 |
{ |
| 498 |
$sanitizedData = []; |
| 499 |
list($fieldIdMap, $typeIndexMap) = self::buildFieldMaps($formFields); |
| 500 |
|
| 501 |
foreach ($data['values'] as $key => $value) { |
| 502 |
if (self::isInternalField($key)) { |
| 503 |
$sanitizedData[$key] = $value; |
| 504 |
continue; |
| 505 |
} |
| 506 |
if (isset($fieldIdMap[$key])) { |
| 507 |
$sanitizedData[$key] = self::sanitizeByFieldType($fieldIdMap[$key], $value); |
| 508 |
continue; |
| 509 |
} |
| 510 |
if (isset($typeIndexMap[$key])) { |
| 511 |
$fieldId = $typeIndexMap[$key]['id']; |
| 512 |
$fieldType = $typeIndexMap[$key]['type']; |
| 513 |
$sanitizedData[$fieldId] = self::sanitizeByFieldType($fieldType, $value); |
| 514 |
} |
| 515 |
} |
| 516 |
|
| 517 |
// Add form ID to sanitized data if present |
| 518 |
if (isset($data['formId'])) { |
| 519 |
$sanitizedData['formId'] = (int)$data['formId']; |
| 520 |
} |
| 521 |
|
| 522 |
// Add post ID and referer if present (for placeholders) |
| 523 |
if (isset($data['postId'])) { |
| 524 |
$sanitizedData['postId'] = (int)($data['postId']); |
| 525 |
} |
| 526 |
if (isset($data['referer'])) { |
| 527 |
$sanitizedData['referer'] = sanitize_text_field($data['referer']); |
| 528 |
} |
| 529 |
|
| 530 |
return $sanitizedData; |
| 531 |
} |
| 532 |
|
| 533 |
/** |
| 534 |
* Build field ID and type-index maps from form fields |
| 535 |
* |
| 536 |
* @param mixed[] $formFields Form fields configuration |
| 537 |
* @return mixed[] |
| 538 |
*/ |
| 539 |
private static function buildFieldMaps(array $formFields): array |
| 540 |
{ |
| 541 |
$fieldIdMap = []; |
| 542 |
$typeIndexMap = []; |
| 543 |
foreach ($formFields as $field) { |
| 544 |
$fieldId = $field->getId() ?? null; |
| 545 |
$fieldType = $field->getType() ?? null; |
| 546 |
$fieldIndex = $field->getIndex() ?? null; |
| 547 |
if ($fieldId !== null) { |
| 548 |
$fieldIdMap[$fieldId] = $fieldType; |
| 549 |
if ($fieldType !== null && $fieldIndex !== null) { |
| 550 |
$typeIndexMap[$fieldType . '_' . $fieldIndex] = [ |
| 551 |
'id' => $fieldId, |
| 552 |
'type' => $fieldType |
| 553 |
]; |
| 554 |
} |
| 555 |
} |
| 556 |
} |
| 557 |
return [$fieldIdMap, $typeIndexMap]; |
| 558 |
} |
| 559 |
|
| 560 |
/** |
| 561 |
* Check if a key is an internal field |
| 562 |
* |
| 563 |
* @param string $key |
| 564 |
* @return bool |
| 565 |
*/ |
| 566 |
private static function isInternalField(string $key): bool |
| 567 |
{ |
| 568 |
return in_array($key, ['nonce', 'formId']); |
| 569 |
} |
| 570 |
|
| 571 |
/** |
| 572 |
* Sanitize a value based on its field type |
| 573 |
* |
| 574 |
* @param string $fieldType The type of field |
| 575 |
* @param mixed $value The value to sanitize |
| 576 |
* |
| 577 |
* @return mixed Sanitized value |
| 578 |
*/ |
| 579 |
private static function sanitizeByFieldType(string $fieldType, $value) |
| 580 |
{ |
| 581 |
// Recursively sanitize arrays/objects (parent-child fields) |
| 582 |
if (is_array($value)) { |
| 583 |
return array_map(function ($v) use ($fieldType) { |
| 584 |
return self::sanitizeByFieldType($fieldType, $v); |
| 585 |
}, $value); |
| 586 |
} |
| 587 |
if (is_object($value)) { |
| 588 |
$sanitized = array_map(function ($v) use ($fieldType) { |
| 589 |
return self::sanitizeByFieldType($fieldType, $v); |
| 590 |
}, get_object_vars($value)); |
| 591 |
return (object)$sanitized; |
| 592 |
} |
| 593 |
switch ($fieldType) { |
| 594 |
case 'email': |
| 595 |
return sanitize_email($value); |
| 596 |
|
| 597 |
case 'number': |
| 598 |
// Preserve decimals |
| 599 |
return is_numeric($value) ? (float)$value : 0.0; |
| 600 |
|
| 601 |
case 'phone': |
| 602 |
// Remove everything except digits, +, and spaces |
| 603 |
return preg_replace('/[^\d\s+]/', '', $value); |
| 604 |
|
| 605 |
case 'paragraph': |
| 606 |
return sanitize_textarea_field($value); |
| 607 |
|
| 608 |
case 'website': |
| 609 |
return sanitize_url($value); |
| 610 |
|
| 611 |
case 'time': |
| 612 |
$sanitizedTime = preg_replace('/[^0-9: ]/i', '', (string)$value); |
| 613 |
return sanitize_text_field($sanitizedTime); |
| 614 |
|
| 615 |
case 'date': |
| 616 |
return sanitize_text_field($value); |
| 617 |
|
| 618 |
case 'text': |
| 619 |
default: |
| 620 |
// Default to text field sanitization |
| 621 |
return self::sanitizeText($value); |
| 622 |
} |
| 623 |
} |
| 624 |
|
| 625 |
/** |
| 626 |
* Verify nonce with custom error handling |
| 627 |
* |
| 628 |
* @param string|null $nonce |
| 629 |
* |
| 630 |
* @throws ForbiddenException |
| 631 |
*/ |
| 632 |
public static function verifyNonce(?string $nonce): void |
| 633 |
{ |
| 634 |
$nonce = sanitize_text_field($nonce); |
| 635 |
|
| 636 |
if (!$nonce || !wp_verify_nonce($nonce, 'wp_rest')) { |
| 637 |
throw new ForbiddenException( |
| 638 |
BackendStrings::getExceptionStrings()['invalid_nonce'] |
| 639 |
); |
| 640 |
} |
| 641 |
} |
| 642 |
/** |
| 643 |
* Verify submission nonce with custom error handling |
| 644 |
* |
| 645 |
* @param string|null $nonce |
| 646 |
* @param int $formId |
| 647 |
* |
| 648 |
* @throws ForbiddenException |
| 649 |
*/ |
| 650 |
public static function verifySubmissionNonce(?string $nonce, int $formId): void |
| 651 |
{ |
| 652 |
$nonce = sanitize_text_field($nonce); |
| 653 |
|
| 654 |
// Verify the form-specific nonce |
| 655 |
if (!wp_verify_nonce($nonce, 'ivyformsFrontSubmissionNonce_' . $formId)) { |
| 656 |
throw new ForbiddenException( |
| 657 |
BackendStrings::getExceptionStrings()['invalid_nonce'] |
| 658 |
); |
| 659 |
} |
| 660 |
} |
| 661 |
|
| 662 |
/** |
| 663 |
* Sanitize text |
| 664 |
* |
| 665 |
* @param string|null $text |
| 666 |
* |
| 667 |
* @return string |
| 668 |
*/ |
| 669 |
public static function sanitizeText(?string $text): ?string |
| 670 |
{ |
| 671 |
if (is_null($text)) { |
| 672 |
return ''; |
| 673 |
} |
| 674 |
|
| 675 |
return wp_kses_post(sanitize_text_field($text)); |
| 676 |
} |
| 677 |
|
| 678 |
/** |
| 679 |
* Sanitize settings fields |
| 680 |
* |
| 681 |
* @param mixed $value |
| 682 |
* |
| 683 |
* @return mixed Sanitized value |
| 684 |
*/ |
| 685 |
public static function sanitizeSettingsFields($value) |
| 686 |
{ |
| 687 |
if (is_array($value)) { |
| 688 |
return array_map([self::class, 'sanitizeSettingsFields'], $value); |
| 689 |
} |
| 690 |
|
| 691 |
if (is_object($value)) { |
| 692 |
return (object)array_map([self::class, 'sanitizeSettingsFields'], (array)$value); |
| 693 |
} |
| 694 |
|
| 695 |
if (is_string($value)) { |
| 696 |
return self::sanitizeText($value); |
| 697 |
} |
| 698 |
|
| 699 |
if (is_int($value)) { |
| 700 |
return intval($value); |
| 701 |
} |
| 702 |
|
| 703 |
if (is_bool($value)) { |
| 704 |
return filter_var($value, FILTER_VALIDATE_BOOLEAN); |
| 705 |
} |
| 706 |
|
| 707 |
return ''; |
| 708 |
} |
| 709 |
|
| 710 |
/** |
| 711 |
* Sanitize email or placeholder |
| 712 |
* |
| 713 |
* @param string $value |
| 714 |
* |
| 715 |
* @return string |
| 716 |
*/ |
| 717 |
public static function sanitizeEmailOrPlaceholder($value): string |
| 718 |
{ |
| 719 |
$value = trim($value); |
| 720 |
// Allow placeholders |
| 721 |
if (preg_match('/^{{[^}]+}}$/', $value)) { |
| 722 |
return $value; |
| 723 |
} |
| 724 |
// Otherwise, sanitize as email |
| 725 |
return sanitize_email($value); |
| 726 |
} |
| 727 |
|
| 728 |
/** |
| 729 |
* Sanitize numeric values for min/max fields |
| 730 |
* Convert empty/unselected to null, but allow 0 as a valid value |
| 731 |
* |
| 732 |
* @param mixed $value |
| 733 |
* @return float|null |
| 734 |
*/ |
| 735 |
private static function sanitizeNumericValue($value): ?float |
| 736 |
{ |
| 737 |
// If value is null or empty string, return null (not selected) |
| 738 |
if ($value === null || $value === '') { |
| 739 |
return null; |
| 740 |
} |
| 741 |
|
| 742 |
// If value is numeric (including 0), convert to float |
| 743 |
if (is_numeric($value)) { |
| 744 |
return (float)$value; |
| 745 |
} |
| 746 |
|
| 747 |
// If not numeric, return null |
| 748 |
return null; |
| 749 |
} |
| 750 |
|
| 751 |
/** |
| 752 |
* Validate email address. |
| 753 |
* |
| 754 |
* @param string $email |
| 755 |
* @return bool |
| 756 |
*/ |
| 757 |
public static function isValidEmail(string $email): bool |
| 758 |
{ |
| 759 |
return filter_var($email, FILTER_VALIDATE_EMAIL) !== false; |
| 760 |
} |
| 761 |
|
| 762 |
/** |
| 763 |
* Normalize field value to string (comma-separated if array) |
| 764 |
* @param mixed $value |
| 765 |
* @return string |
| 766 |
*/ |
| 767 |
public static function normalizeFieldValue($value): string |
| 768 |
{ |
| 769 |
if (is_array($value)) { |
| 770 |
return implode(', ', $value); |
| 771 |
} |
| 772 |
return (string)$value; |
| 773 |
} |
| 774 |
|
| 775 |
/** |
| 776 |
* Sanitize integration settings |
| 777 |
* Recursively handles nested structures and various data types. |
| 778 |
* |
| 779 |
* @param mixed $integrationSettings |
| 780 |
* |
| 781 |
* @return array<string, array<string, mixed>> |
| 782 |
*/ |
| 783 |
public static function sanitizeIntegrationSettings($integrationSettings): array |
| 784 |
{ |
| 785 |
// Handle null or non-array inputs |
| 786 |
if (!is_array($integrationSettings)) { |
| 787 |
return []; |
| 788 |
} |
| 789 |
|
| 790 |
$cleanedSettings = []; |
| 791 |
|
| 792 |
foreach ($integrationSettings as $integration => $settings) { |
| 793 |
// Skip if not a valid integration name or settings structure |
| 794 |
if (!is_string($integration) || !is_array($settings)) { |
| 795 |
continue; |
| 796 |
} |
| 797 |
|
| 798 |
$cleanedSettings[sanitize_text_field($integration)] = self::sanitizeIntegrationSettingsRecursive($settings); |
| 799 |
} |
| 800 |
|
| 801 |
return $cleanedSettings; |
| 802 |
} |
| 803 |
|
| 804 |
/** |
| 805 |
* Recursively sanitize integration settings values |
| 806 |
* |
| 807 |
* @param mixed $value |
| 808 |
* @return mixed |
| 809 |
*/ |
| 810 |
public static function sanitizeIntegrationSettingsRecursive($value) |
| 811 |
{ |
| 812 |
// Handle arrays recursively |
| 813 |
if (is_array($value)) { |
| 814 |
$sanitized = []; |
| 815 |
foreach ($value as $key => $val) { |
| 816 |
$sanitizedKey = is_string($key) ? sanitize_text_field($key) : $key; |
| 817 |
$sanitized[$sanitizedKey] = self::sanitizeIntegrationSettingsRecursive($val); |
| 818 |
} |
| 819 |
return $sanitized; |
| 820 |
} |
| 821 |
|
| 822 |
// Handle different scalar types |
| 823 |
if (is_bool($value)) { |
| 824 |
return $value; |
| 825 |
} |
| 826 |
if (is_int($value)) { |
| 827 |
return $value; |
| 828 |
} |
| 829 |
if (is_float($value)) { |
| 830 |
return $value; |
| 831 |
} |
| 832 |
if (is_string($value)) { |
| 833 |
return sanitize_text_field($value); |
| 834 |
} |
| 835 |
|
| 836 |
return ''; |
| 837 |
} |
| 838 |
|
| 839 |
/** |
| 840 |
* Get allowed HTML tags and attributes for wp_kses sanitization. |
| 841 |
* Includes support for signature images with data: URIs. |
| 842 |
* |
| 843 |
* @return array<string, array<string, bool>> |
| 844 |
*/ |
| 845 |
public static function getAllowedHtmlTags(): array |
| 846 |
{ |
| 847 |
return [ |
| 848 |
'img' => [ |
| 849 |
'src' => true, |
| 850 |
'alt' => true, |
| 851 |
'style' => true, |
| 852 |
'class' => true, |
| 853 |
'width' => true, |
| 854 |
'height' => true, |
| 855 |
], |
| 856 |
'a' => [ |
| 857 |
'href' => true, |
| 858 |
'title' => true, |
| 859 |
'target' => true, |
| 860 |
'rel' => true, |
| 861 |
], |
| 862 |
'p' => ['class' => true, 'style' => true], |
| 863 |
'br' => [], |
| 864 |
'strong' => [], |
| 865 |
'b' => [], |
| 866 |
'em' => [], |
| 867 |
'i' => [], |
| 868 |
'u' => [], |
| 869 |
'span' => ['class' => true, 'style' => true], |
| 870 |
'div' => ['class' => true, 'style' => true], |
| 871 |
'ul' => ['class' => true], |
| 872 |
'ol' => ['class' => true], |
| 873 |
'li' => ['class' => true], |
| 874 |
'h1' => ['class' => true, 'style' => true], |
| 875 |
'h2' => ['class' => true, 'style' => true], |
| 876 |
'h3' => ['class' => true, 'style' => true], |
| 877 |
'h4' => ['class' => true, 'style' => true], |
| 878 |
'h5' => ['class' => true, 'style' => true], |
| 879 |
'h6' => ['class' => true, 'style' => true], |
| 880 |
]; |
| 881 |
} |
| 882 |
|
| 883 |
/** |
| 884 |
* Get allowed protocols for wp_kses sanitization. |
| 885 |
* Includes 'data' protocol for signature images. |
| 886 |
* |
| 887 |
* @return array<int, string> |
| 888 |
*/ |
| 889 |
public static function getAllowedProtocols(): array |
| 890 |
{ |
| 891 |
return ['http', 'https', 'mailto', 'data']; |
| 892 |
} |
| 893 |
|
| 894 |
/** |
| 895 |
* Sanitize HTML content using wp_kses with support for signature images. |
| 896 |
* |
| 897 |
* @param string $content |
| 898 |
* @return string |
| 899 |
*/ |
| 900 |
public static function sanitizeHtmlContent(string $content): string |
| 901 |
{ |
| 902 |
return wp_kses($content, self::getAllowedHtmlTags(), self::getAllowedProtocols()); |
| 903 |
} |
| 904 |
} |
| 905 |
|
