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Arne Schwabe 1fe958183f Silence compiler truncation warning by checking snprintf return value
On the more recent mingw compilers (homebrew mingw 13.0.0, GCC 15.2.0) the
compiler complains about a potential truncation in these two places.

  src/openvpn/tun.c:3806:57:
  error: '%s' directive output may be truncated writing up
  to 255 bytes into a region of size 178
  [-Werror=format-truncation=]

This not very helpful but checking the snprintf return value
will make the compiler not warn about this.

Change-Id: I54b11a5540fb236580a3b80c6d1e8678b24bd852
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1272
Message-Id: <20260121121830.27244-1-frank@lichtenheld.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg35367.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
2026-01-24 16:47:48 +01:00
.github GHA: Maintenance update January 2026 2026-01-07 22:10:56 +01:00
contrib Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
debug build: standard directory layout 2012-03-22 22:07:08 +01:00
dev-tools Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
distro Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
doc Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
include Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
m4 doc: HTTPS upgrades and URL fixes throughout the tree 2025-10-13 17:39:46 +02:00
sample Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
src Silence compiler truncation warning by checking snprintf return value 2026-01-24 16:47:48 +01:00
tests Correctly handle sender jumping exactly epoch_data_keys_future_count 2026-01-15 11:10:56 +01:00
.clang-format clang-format: Switch to ColumnLimit 0 2025-08-05 15:32:53 +02:00
.git-blame-ignore-revs Add clang-format reformat commit to .git-blame-ignore-revs 2025-08-05 17:07:05 +02:00
.gitattributes cleanup: add .gitattributes to control eol style explicitly 2012-04-26 20:54:26 +02:00
.gitignore dns: apply settings via script on unixoid systems 2025-05-14 18:17:51 +02:00
.mailmap Update .mailmap to unify and clean up odd names and e-mail addresses 2016-10-18 13:46:04 +02:00
.pre-commit-config.yaml Define a .clang-format file for the project 2025-08-04 10:22:34 +02:00
.svncommitters Added mapping files from SVN commit ID to more descriptive commit IDs. 2010-10-21 11:31:26 +02:00
AUTHORS This is the start of the BETA21 branch. 2005-09-26 05:28:27 +00:00
ChangeLog OpenVPN Release 2.7_rc5 2026-01-15 12:54:15 +01:00
Changes.rst OpenVPN Release 2.7_rc5 2026-01-15 12:54:15 +01:00
CMakeLists.txt remove ENABLE_X509ALTUSERNAME conditional 2026-01-14 12:13:47 +01:00
CMakePresets.json Add building/testing with msbuild and the clang compiler 2024-12-27 12:30:55 +01:00
compat.m4 Update GPL header in all source files to current recommended version 2025-08-03 16:55:47 +02:00
config.h.cmake.in remove ENABLE_X509ALTUSERNAME conditional 2026-01-14 12:13:47 +01:00
configure.ac remove ENABLE_X509ALTUSERNAME conditional 2026-01-14 12:13:47 +01:00
CONTRIBUTING.rst CONTRIBUTING: Update outdated/obsolete information 2025-10-13 18:10:25 +02:00
COPYING Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
COPYRIGHT.GPL Update text of GPL to latest version from FSF 2025-08-03 16:43:58 +02:00
forked-test-driver forked-test-driver: Show test output always 2024-04-02 17:20:48 +02:00
INSTALL doc: HTTPS upgrades and URL fixes throughout the tree 2025-10-13 17:39:46 +02:00
ltrc.inc cmake: symlink whole build dir not just .json file 2024-01-17 15:01:54 +01:00
Makefile.am Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
NEWS This is the start of the BETA21 branch. 2005-09-26 05:28:27 +00:00
PORTS Update Copyright statements to 2026 2026-01-08 10:59:57 +01:00
README doc: HTTPS upgrades and URL fixes throughout the tree 2025-10-13 17:39:46 +02:00
README.awslc Add compatibility to build OpenVPN with AWS-LC. 2025-01-29 17:11:19 +01:00
README.cmake.md README.cmake.md: Document minimum required CMake version for --preset 2024-02-01 20:26:45 +01:00
README.dco.md README.dco: update Linux instructions 2025-07-16 16:16:35 +02:00
README.ec Implement tls-groups option to specify eliptic curves/groups 2020-07-21 22:33:58 +02:00
README.mbedtls Drop Mbed TLS 2.X compatibility 2025-12-01 15:00:37 +01:00
README.wolfssl Add a section about wolfSSL GPLv3 and point out missing TLS PRF support 2025-12-04 14:59:08 +01:00
renovate.json GHA: Dependency and Actions update May 2025 2025-05-18 17:41:42 +02:00
version.m4 OpenVPN Release 2.7_rc5 2026-01-15 12:54:15 +01:00

OpenVPN -- A Secure tunneling daemon

Copyright (C) 2002-2022 OpenVPN Inc. This program is free software;
you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.

*************************************************************************

To get the latest release of OpenVPN, go to:

	https://openvpn.net/community-downloads/

To Build and Install,

	tar -zxf openvpn-<version>.tar.gz
	cd openvpn-<version>
	./configure
	make
	make install

or see the file INSTALL for more info.

For information on how to build OpenVPN on/for Windows with MinGW
or MSVC see README.cmake.md.

*************************************************************************

For detailed information on OpenVPN, including examples, see the man page
  http://openvpn.net/man.html

For a sample VPN configuration, see
  http://openvpn.net/howto.html

To report an issue, see
  https://github.com/OpenVPN/openvpn/issues/new

For a description of OpenVPN's underlying protocol,
  see the file ssl.h included in the source distribution.

*************************************************************************

Other Files & Directories:

* configure.ac -- script to rebuild our configure
  script and makefile.

* sample/sample-scripts/verify-cn

  A sample perl script which can be used with OpenVPN's
  --tls-verify option to provide a customized authentication
  test on embedded X509 certificate fields.

* sample/sample-keys/

  Sample RSA keys and certificates.  DON'T USE THESE FILES
  FOR ANYTHING OTHER THAN TESTING BECAUSE THEY ARE TOTALLY INSECURE.

* sample/sample-config-files/

  A collection of OpenVPN config files and scripts from
  the HOWTO at http://openvpn.net/howto.html

*************************************************************************

Note that easy-rsa and tap-windows are now maintained in their own subprojects.
Their source code is available here:

  https://github.com/OpenVPN/easy-rsa
  https://github.com/OpenVPN/tap-windows6

Community-provided Windows installers (MSI) and Debian packages are built from

  https://github.com/OpenVPN/openvpn-build

See the INSTALL file for usage information.