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Willy Tarreau 177aed56dc MEDIUM: debug: detect redefinition of symbols upon dlopen()
In order to better detect the danger caused by extra shared libraries
which replace some symbols, upon dlopen() we now compare a few critical
symbols such as malloc(), free(), and some OpenSSL symbols, to see if
the loaded library comes with its own version. If this happens, a
warning is emitted and TAINTED_REDEFINITION is set. This is important
because some external libs might be linked against different libraries
than the ones haproxy was linked with, and most often this will end
very badly (e.g. an OpenSSL object is allocated by haproxy and freed
by such libs).

Since the main source of dlopen() calls is the Lua lib, via a "require"
statement, it's worth trying to show a Lua call trace when detecting a
symbol redefinition during dlopen(). As such we emit a Lua backtrace if
Lua is detected as being in use.
2022-06-19 17:58:32 +02:00
.github CI: determine actual OpenSSL version dynamically 2022-05-20 23:26:48 +02:00
addons CLEANUP: applet: rename appctx_cs() to appctx_sc() 2022-05-27 19:33:35 +02:00
admin BUILD: halog: fix some incorrect signs in printf formats for integers 2022-04-12 08:40:38 +02:00
dev MINOR: qpack: implement standalone decoder tool 2022-06-15 15:42:10 +02:00
doc DOC: design: update the task vs thread affinity requirements 2022-06-14 16:16:22 +02:00
examples EXAMPLES: remove completely outdated acl-content-sw.cfg 2022-05-30 18:14:24 +02:00
include MEDIUM: debug: detect redefinition of symbols upon dlopen() 2022-06-19 17:58:32 +02:00
reg-tests REGTESTS: healthcheckmail: Relax health-check failure condition 2022-06-08 16:58:07 +02:00
scripts SCRIPTS: make publish-release try to launch make-releases-json 2022-05-30 15:44:10 +02:00
src MEDIUM: debug: detect redefinition of symbols upon dlopen() 2022-06-19 17:58:32 +02:00
tests CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
.cirrus.yml CI: cirrus: switch to FreeBSD-13.0 2022-04-12 07:59:06 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore MINOR: qpack: implement standalone decoder tool 2022-06-15 15:42:10 +02:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml CI: travis-ci: temporarily disable arm64 builds 2021-08-07 07:28:15 +02:00
BRANCHES DOC: fix some spelling issues over multiple files 2021-01-08 14:53:47 +01:00
CHANGELOG [RELEASE] Released version 2.7-dev0 2022-05-31 17:05:27 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL MINOR: version: it's development again 2022-05-31 17:04:45 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS DOC: add maintainers for QUIC and HTTP/3 2022-05-30 17:34:51 +02:00
Makefile MINOR: qpack: implement standalone decoder tool 2022-06-15 15:42:10 +02:00
README DOC: create a BRANCHES file to explain the life cycle 2019-06-15 22:00:14 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.6.0 2022-05-31 16:58:21 +02:00
VERSION [RELEASE] Released version 2.7-dev0 2022-05-31 17:05:27 +02:00

The HAProxy documentation has been split into a number of different files for
ease of use.

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)