- Introduced `BOOT_TIME_MAX_SECS` constant to define the maximum accepted boot-time timestamp.
- Updated `validate_tls_handshake_at_time` to utilize the new boot time constant for timestamp validation.
- Enhanced `extract_sni_from_client_hello` to validate SNI hostnames against specified criteria, rejecting invalid hostnames.
- Added tests to ensure proper handling of boot time timestamps and SNI validation.
feat(handshake): improve user secret decoding and ALPN enforcement
- Refactored user secret decoding to provide better error handling and logging for invalid secrets.
- Added tests for concurrent identical handshakes to ensure replay protection works as expected.
- Implemented ALPN enforcement in handshake processing, rejecting unsupported protocols and allowing valid ones.
fix(masking): implement timeout handling for masking operations
- Added timeout handling for writing proxy headers and consuming client data in masking.
- Adjusted timeout durations for testing to ensure faster feedback during unit tests.
- Introduced tests to verify behavior when masking is disabled and when proxy header writes exceed the timeout.
test(masking): add tests for slowloris connections and proxy header timeouts
- Created tests to validate that slowloris connections are closed by consume timeout when masking is disabled.
- Added a test for proxy header write timeout to ensure it returns false when the write operation does not complete.
- forward valid-TLS/invalid-MTProto clients to mask backend in both client paths\n- harden TLS validation against timing and clock edge cases\n- move replay tracking behind successful authentication to avoid cache pollution\n- tighten secret decoding and key-material handling paths\n- add dedicated security test modules for tls/client/handshake/masking\n- include production-path regression for ClientHandler fallback behavior
The ProxyError import in tls.rs is only used in test code
(validate_server_hello_structure function), so guard it with
#[cfg(test)] to eliminate the unused import warning.
- Add ProxyError import and fix Result type annotation in tls.rs
- Add Arc import in stats/mod.rs test module
- Add BodyExt import in metrics.rs test module
These imports were missing causing compilation failures in
cargo test --release with 10 errors.
- Remove unused imports across multiple modules
- Add #![allow(dead_code)] for public API items preserved for future use
- Add #![allow(deprecated)] for rand::Rng::gen_range usage
- Add #![allow(unused_assignments)] in main.rs
- Add #![allow(unreachable_code)] in network/stun.rs
- Prefix unused variables with underscore (_ip_tracker, _prefer_ipv6)
- Fix unused_must_use warning in tls_front/cache.rs
This ensures clean compilation without warnings while preserving
public API items that may be used in the future.
- Fixed tests that failed to compile due to mismatched generic parameters of HandshakeResult:
- Changed `HandshakeResult<i32>` to `HandshakeResult<i32, (), ()>`
- Changed `HandshakeResult::BadClient` to `HandshakeResult::BadClient { reader: (), writer: () }`
- Added Zeroize for all structures holding key material:
- AesCbc – key and IV are zeroized on drop
- SecureRandomInner – PRNG output buffer is zeroized on drop; local key copy in constructor is zeroized immediately after being passed to the cipher
- ObfuscationParams – all four key‑material fields are zeroized on drop
- HandshakeSuccess – all four key‑material fields are zeroized on drop
- Added protocol‑requirement documentation for legacy hashes (CodeQL suppression) in hash.rs (MD5/SHA‑1)
- Added documentation for zeroize limitations of AesCtr (opaque cipher state) in aes.rs
- Implemented silent‑mode logging and refactored initialization:
- Added LogLevel enum to config and CLI flags --silent / --log-level
- Added parse_cli() to handle --silent, --log-level, --help
- Restructured main.rs initialization order: CLI → config load → determine log level → init tracing
- Errors before tracing initialization are printed via eprintln!
- Proxy links (tg://) are printed via println! – always visible regardless of log level
- Configuration summary and operational messages are logged via info! (suppressed in silent mode)
- Connection processing errors are lowered to debug! (hidden in silent mode)
- Warning about default tls_domain moved to main (after tracing init)
Co-Authored-By: brekotis <93345790+brekotis@users.noreply.github.com>
David Osipov