Bot uses default HTML parse mode — all messages are HTML-parsed by Telegram.
Added html.escape() to all user-controlled and admin-controlled strings
before interpolation into HTML messages to prevent injection and parse errors.
49 files, ~250+ injection points fixed:
- user.full_name, first_name across all handlers and services
- tariff.name/description in purchase flow, admin panel, auto-purchase service
- campaign.name, start_parameter in admin and user-facing handlers
- group.name, promo_group.name across promo management
- contest.title, prize_text, leaderboard names (including public channels)
- transaction.description (contains raw user.full_name from referral service)
- restriction_reason across all balance and subscription handlers
- ticket.title, message_text, poll.title, poll.description
- welcome text template placeholders (first_name, username)
- maintenance reason, admin_name, selected_prize.display_name
New helpers in app/utils/formatting.py:
- safe_html_name() for escaping display names
- user_html_link() replacing 15+ duplicated inline link patterns
- Add ContextVarsMiddleware for automatic user_id/chat_id/username binding
via structlog contextvars (aiogram) and http_method/http_path (FastAPI)
- Use bound_contextvars() context manager instead of clear_contextvars()
to safely restore previous state instead of wiping all context
- Register ContextVarsMiddleware as outermost middleware (before GlobalError)
so all error logs include user context
- Replace structlog.get_logger() with structlog.get_logger(__name__) across
270 calls in 265 files for meaningful logger names
- Switch wrapper_class from BoundLogger to make_filtering_bound_logger()
for pre-processor level filtering (performance optimization)
- Migrate 1411 %-style positional arg logger calls to structlog kwargs
style across 161 files via AST script
- Migrate log_rotation_service.py from stdlib logging to structlog
- Add payment module prefixes to TelegramNotifierProcessor.IGNORED_LOGGER_PREFIXES
and ExcludePaymentFilter.PAYMENT_MODULES to prevent payment data leaking
to Telegram notifications and general log files
- Fix LoggingMiddleware: add from_user null-safety for channel posts,
switch time.time() to time.monotonic() for duration measurement
- Remove duplicate logger assignments in purchase.py, config.py,
inline.py, and admin/payments.py
- Add pyproject.toml with uv and ruff configuration
- Pin Python version to 3.13 via .python-version
- Add Makefile commands: lint, format, fix
- Apply ruff formatting to entire codebase
- Remove unused imports (base64 in yookassa/simple_subscription)
- Update .gitignore for new config files
Fringg