From 0b1a68fffa33e175c320c2828604cdc7dfb097e7 Mon Sep 17 00:00:00 2001 From: Gert Doering Date: Mon, 29 Dec 2014 18:48:45 +0100 Subject: Print remote IPv4 address on a dual-stack v6 socket in IPv4 format Previously, the code would print IPv4-mapped format ("::ffff:1.2.3.4"), which is technically correct but adds no extra value, and is confusingly different from the output if using a v4 socket. Print "1.2.3.4" instead, whatever socket type is used. Affects client IP address in log file, status output (mroute_addr_print_ex), and environment (setenv_sockaddr). The fact that a dual-stack socket was used is still visible in the initial peer connect message in the log: '... Peer Connection Initiated with [AF_INET6]::ffff:1.1.3.4:53779' Signed-off-by: Gert Doering Acked-by: Arne Schwabe Message-Id: <1419875325-96015-1-git-send-email-gert@greenie.muc.de> URL: http://article.gmane.org/gmane.network.openvpn.devel/9363 --- src/openvpn/socket.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'src/openvpn/socket.c') diff --git a/src/openvpn/socket.c b/src/openvpn/socket.c index 331a9d9..f5c740d 100644 --- a/src/openvpn/socket.c +++ b/src/openvpn/socket.c @@ -2573,9 +2573,19 @@ setenv_sockaddr (struct env_set *es, const char *name_prefix, const struct openv } break; case AF_INET6: - openvpn_snprintf (name_buf, sizeof (name_buf), "%s_ip6", name_prefix); - getnameinfo(&addr->addr.sa, sizeof (struct sockaddr_in6), - buf, sizeof(buf), NULL, 0, NI_NUMERICHOST); + if ( IN6_IS_ADDR_V4MAPPED( &addr->addr.in6.sin6_addr )) + { + struct in_addr ia; + ia.s_addr = *(in_addr_t *)&addr->addr.in6.sin6_addr.s6_addr[12] ; + openvpn_snprintf (name_buf, sizeof (name_buf), "%s_ip", name_prefix); + openvpn_snprintf (buf, sizeof(buf), "%s", inet_ntoa(ia) ); + } + else + { + openvpn_snprintf (name_buf, sizeof (name_buf), "%s_ip6", name_prefix); + getnameinfo(&addr->addr.sa, sizeof (struct sockaddr_in6), + buf, sizeof(buf), NULL, 0, NI_NUMERICHOST); + } setenv_str (es, name_buf, buf); if ((flags & SA_IP_PORT) && addr->addr.in6.sin6_port) -- cgit