* Fix business logic vulnerability allowing negative sale totals (GHSA-wv3j-pp8r-7q43)
Add server-side validation in postEditItem() to reject negative prices,
quantities, and discounts, as well as percentage discounts exceeding 100%
and fixed discounts exceeding the item total. Also block sale completion
with negative totals in non-return mode to prevent fraud/theft.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Fix: exempt return mode from negative quantity validation
Return mode legitimately stores items with negative quantities.
The quantity validation now skips the non-negative check in return mode,
consistent with the existing return mode exemption in postComplete().
Also use abs() for fixed discount comparison to handle return quantities.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Refactor: use $rules + validate() pattern per review feedback
Address review comments from jekkos on PR #4450:
1. Use CI4 $rules variable with custom non_negative_decimal validation
rule instead of manual if-checks for price/discount validation.
2. Add validation error strings to all 44 non-English language files
(English fallback values used until translations are contributed).
3. Use validate() method with $messages array for localized error
display, maintaining the existing controller pattern.
Additional improvements:
- Add non_negative_decimal rule to OSPOSRules.php (leverages
parse_decimals() for locale-aware decimal parsing)
- Preserve manual checks for business logic (return mode quantity
exemption, discount bounds via bccomp)
- Fix PHP 8.1+ compatibility: avoid passing method return to reset()
- Explicit empty discount handling for bc-math safety
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Fix: rename to nonNegativeDecimal (PSR), clear non-English translation strings
- Rename validation rule method non_negative_decimal → nonNegativeDecimal in
OSPOSRules.php and all $rules/$messages references in Sales.php (PSR naming
per @objecttothis review)
- Replace English fallback text with "" in 43 non-English language files so
CI4 falls back to the base language string; weblate will handle translations
(per @jekkos and @objecttothis agreement)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Paul <morimori-dev@github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: objecttothis <17935339+objecttothis@users.noreply.github.com>
