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getpeername() and getsockname() will truncate the result if it is larger than the passed-in length. Because here always the size of the `sa` IPv4 union member was passed in, all larger (aka IPv6) results were truncated. Instead use the size of the `addr` union, which is the maximum size of all union members. The bug was introduced in 0b6450c9. Trac: #1358 Signed-off-by: corubba <corubba@gmx.de> Acked-by: Gert Doering <gert@greenie.muc.de> Message-Id: <8de5660b-d917-4092-8871-250495d8c7a4@gmx.de> URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg30035.html Signed-off-by: Gert Doering <gert@greenie.muc.de> (cherry picked from commit dbc0491f20c34cf3b7ab8fe2a55442ea93007ddd)
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 (Note: We recently switched to GitHub for reporting new issues, old issues can be found at: https://community.openvpn.net/openvpn/report) 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.