# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [4.7.0] - 2022-04-26
### Added
- Allow disabling the internal DHCP server !22
- icmp: Support falling back on trying a SOCK_RAW socket !92
- Support Unix sockets in hostfwd !103
- IPv6 DNS proxying support !110
- bootp: add support for UEFI HTTP boot !111
- New callback that supports CFI better !117
### Fixed
- dhcp: Always send DHCP_OPT_LEN bytes in options !97
- Fix Haiku build !98 !99
- Fix memory leak when using libresolv !100
- Ensure sin6_scope_id is zero for global addresses !102
- resolv: fix IPv6 resolution on Darwin !104
- socket: Initialize so_type in socreate !109
- Handle ECONNABORTED from recv !116
## [4.6.1] - 2021-06-18
### Fixed
- Fix DHCP regression introduced in 4.6.0. !95
## [4.6.0] - 2021-06-14
### Added
- mbuf: Add debugging helpers for allocation. !90
### Changed
- Revert "Set macOS deployment target to macOS 10.4". !93
### Fixed
- mtod()-related buffer overflows (CVE-2021-3592 #44, CVE-2021-3593 #45,
CVE-2021-3594 #47, CVE-2021-3595 #46).
- poll_fd: add missing fd registration for UDP and ICMP
- ncsi: make ncsi_calculate_checksum work with unaligned data. !89
- Various typos and doc fixes. !88
## [4.5.0] - 2021-05-18
### Added
- IPv6 forwarding. !62 !75 !77
- slirp_neighbor_info() to dump the ARP/NDP tables. !71
### Changed
- Lazy guest address resolution for IPv6. !81
- Improve signal handling when spawning a child. !61
- Set macOS deployment target to macOS 10.4. !72
- slirp_add_hostfwd: Ensure all error paths set errno. !80
- More API documentation.
### Fixed
- Assertion failure on unspecified IPv6 address. !86
- Disable polling for PRI on MacOS, fixing some closing streams issues. !73
- Various memory leak fixes on fastq/batchq. !68
- Memory leak on IPv6 fast-send. !67
- Slow socket response on Windows. !64
- Misc build and code cleanups. !60 !63 !76 !79 !84
## [4.4.0] - 2020-12-02
### Added
- udp, udp6, icmp: handle TTL value. !48
- Enable forwarding ICMP errors. !49
- Add DNS resolving for iOS. !54
### Changed
- Improve meson subproject() support. !53
- Removed Makefile-based build system. !56
### Fixed
- socket: consume empty packets. !55
- check pkt_len before reading protocol header (CVE-2020-29129). !57
- ip_stripoptions use memmove (fixes undefined behaviour). !47
- various Coverity-related changes/fixes.
## [4.3.1] - 2020-07-08
### Changed
- A silent truncation could occur in `slirp_fmt()`, which will now print a
critical message. See also #22.
### Fixed
- CVE-2020-10756 - Drop bogus IPv6 messages that could lead to data leakage.
See !44 and !42.
- Fix win32 builds by using the SLIRP_PACKED definition.
- Various coverity scan errors fixed. !41
- Fix new GCC warnings. !43
## [4.3.0] - 2020-04-22
### Added
- `SLIRP_VERSION_STRING` macro, with the git sha suffix when building from git
- `SlirpConfig.disable_dns`, to disable DNS redirection #16
### Changed
- `slirp_version_string()` now has the git sha suffix when building form git
- Limit DNS redirection to port 53 #16
### Fixed
- Fix build regression with mingw & NetBSD
- Fix use-afte-free in `ip_reass()` (CVE-2020-1983)
## [4.2.0] - 2020-03-17
### Added
- New API function `slirp_add_unix`: add a forward rule to a Unix socket.
- New API function `slirp_remove_guestfwd`: remove a forward rule previously
added by `slirp_add_exec`, `slirp_add_unix` or `slirp_add_guestfwd`
- New `SlirpConfig.outbound_addr{,6}` fields to bind output socket to a
specific address
### Changed
- socket: do not fallback on host loopback if `get_dns_addr()` failed
or the address is in slirp network
### Fixed
- ncsi: fix checksum OOB memory access
- `tcp_emu()`: fix OOB accesses
- tftp: restrict relative path access
- state: fix loading of guestfwd state
## [4.1.0] - 2019-12-02
### Added
- The `slirp_new()` API, simpler and more extensible than `slirp_init()`.
- Allow custom MTU configuration.
- Option to disable host loopback connections.
- CI now runs scan-build too.
### Changed
- Disable `tcp_emu()` by default. `tcp_emu()` is known to have caused
several CVEs, and not useful today in most cases. The feature can
be still enabled by setting `SlirpConfig.enable_emu` to true.
- meson build system is now `subproject()` friendly.
- Replace remaining `malloc()`/`free()` with glib (which aborts on OOM)
- Various code cleanups.
### Deprecated
- The `slirp_init()` API.
### Fixed
- `getpeername()` error after `shutdown(SHUT_WR)`.
- Exec forward: correctly parse command lines that contain spaces.
- Allow 0.0.0.0 destination address.
- Make host receive broadcast packets.
- Various memory related fixes (heap overflow, leaks, NULL
dereference).
- Compilation warnings, dead code.
## [4.0.0] - 2019-05-24
### Added
- Installable as a shared library.
- meson build system
(& make build system for in-tree QEMU integration)
### Changed
- Standalone project, removing any QEMU dependency.
- License clarifications.
[Unreleased]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.7.0...master
[4.7.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.6.1...v4.7.0
[4.6.1]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.6.0...v4.6.1
[4.6.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.5.0...v4.6.0
[4.5.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.4.0...v4.5.0
[4.4.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.3.1...v4.4.0
[4.3.1]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.3.0...v4.3.1
[4.3.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.2.0...v4.3.0
[4.2.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.1.0...v4.2.0
[4.1.0]: https://gitlab.freedesktop.org/slirp/libslirp/compare/v4.0.0...v4.1.0
[4.0.0]: https://gitlab.freedesktop.org/slirp/libslirp/commits/v4.0.0
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