1696cfaa19
The key type received over the peers protocol is not checked for validity and as a result can crash the process when passed through peer_int_key_type[] in peer_treat_definemsg(). The risk remains very low since only trusted peers may exchange tables, however it represents a risk the day haproxy supports new key types, because mixing old and new versions could then cause the old ones to crash. Let's add the required check in peer_treat_definemsg(). It is also worth noting that in this function a few protocol identifiers of type int read directly from a var_int via intdecode() and that some protocol aliasing may occur (e.g. table_id, table_id_len etc). This is not supposed to be a problem but it could hide implementation bugs and cause interoperability issues once fixed, so these should be addressed in a future commit that will not be marked for backporting. Thanks to Haruto Kimura (Stella) for finding and reporting this bug. This fix needs to be backported to all stable versions.
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
Please refer to the following files depending on what you're looking for:
- INSTALL for instructions on how to build and install HAProxy
- BRANCHES to understand the project's life cycle and what version to use
- LICENSE for the project's license
- CONTRIBUTING for the process to follow to submit contributions
The more detailed documentation is located into the doc/ directory:
- doc/intro.txt for a quick introduction on HAProxy
- doc/configuration.txt for the configuration's reference manual
- doc/lua.txt for the Lua's reference manual
- doc/SPOE.txt for how to use the SPOE engine
- doc/network-namespaces.txt for how to use network namespaces under Linux
- doc/management.txt for the management guide
- doc/regression-testing.txt for how to use the regression testing suite
- doc/peers.txt for the peers protocol reference
- doc/coding-style.txt for how to adopt HAProxy's coding style
- doc/internals for developer-specific documentation (not all up to date)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.