Files
InvoiceShelf/app/Support/Pdf/PdfHtmlSanitizer.php
Darko Gjorgjijoski 6d1816bd1b refactor: reorganize app/Services and app/Support by domain
The app/Services/ directory had grown into 22 flat files at the root plus 7 uneven subdirectories — finding anything required scrolling through an alphabetical mix of small CRUD services, infrastructure drivers, and install-time utilities. This commit groups services by domain, folds Backup into a new Storage namespace, and moves framework-infrastructure and install-time helpers out of Services and into Support where they belong.

New Services layout: Documents/ (Invoice, Estimate, RecurringInvoice, Payment, Expense, Transaction, DocumentItem, SerialNumber, Currency — matches the 'Documents' navigation group); Company/ (Company, Member, Invitation); Mail/ (MailConfiguration, CompanyMailConfig); Storage/ (FileDisk, plus Backup folded in). ExchangeRateProviderService moves next to its drivers in ExchangeRate/; FontService moves into Pdf/ where it belongs. CustomerService, ItemService, CustomFieldService stay at the Services root as standalone single-file domains.

Moves to Support/: Hashids/ (library wrapper — not business logic); Setup/ (one-shot install-time utilities — stateless helpers); Pdf/ (ImageUtils, PdfTemplateUtils, plus the existing PdfHtmlSanitizer consolidated into the same subdir). These are all framework infrastructure and stateless utilities — the 'service' label never really fit them.

Namespace declarations in 29 moved files updated to match new paths. 62 consumer files (controllers, other services, tests, database factories, seeders, routes, bootstrap/providers.php) have their use statements rewritten via a literal-string replacement script — no regex meant no risk of half-matching. Three Documents services needed an explicit 'use App\Services\Mail\CompanyMailConfigService' added because the same-namespace short reference they relied on no longer resolves after the split.

Verified: composer dump-autoload, 350 tests pass (850 assertions), vendor/bin/pint clean, npm run build succeeds.
2026-04-11 10:00:00 +02:00

90 lines
2.4 KiB
PHP

<?php
namespace App\Support\Pdf;
use DOMDocument;
use DOMElement;
use DOMXPath;
final class PdfHtmlSanitizer
{
/**
* Sanitize HTML that will be rendered inside Dompdf. Removes tags that can trigger
* network requests (SSRF) or carry executable handlers, while keeping common
* text-formatting markup used in invoice/estimate/payment notes.
*/
public static function sanitize(string $html): string
{
if ($html === '') {
return '';
}
// Legacy/invalid `</br>` is dropped by libxml and collapses lines in PDF output; normalize to `<br />`.
$html = str_replace('</br>', '<br />', $html);
$allowedTags = '<br><br/><p><b><strong><i><em><u><ol><ul><li><table><tr><td><th><thead><tbody><tfoot><h1><h2><h3><h4><blockquote>';
$html = strip_tags($html, $allowedTags);
$previous = libxml_use_internal_errors(true);
$doc = new DOMDocument;
$wrapped = '<?xml encoding="UTF-8"?><div id="__pdf_notes">'.$html.'</div>';
$doc->loadHTML($wrapped, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
libxml_clear_errors();
libxml_use_internal_errors($previous);
$xpath = new DOMXPath($doc);
$root = $xpath->query('//*[@id="__pdf_notes"]')->item(0);
if (! $root instanceof DOMElement) {
return $html;
}
foreach ($xpath->query('.//*', $root) as $element) {
if (! $element instanceof DOMElement) {
continue;
}
$toRemove = [];
foreach ($element->attributes as $attr) {
if (self::shouldRemoveAttribute($attr->name)) {
$toRemove[] = $attr->name;
}
}
foreach ($toRemove as $name) {
$element->removeAttribute($name);
}
}
$result = '';
foreach ($root->childNodes as $child) {
$result .= $doc->saveHTML($child);
}
return $result;
}
private static function shouldRemoveAttribute(string $name): bool
{
$lower = strtolower($name);
if (str_starts_with($lower, 'on')) {
return true;
}
return in_array($lower, [
'style',
'src',
'href',
'srcset',
'srcdoc',
'poster',
'formaction',
'xlink:href',
], true);
}
}