From e085deb9444bc049401a4296c3e7ad87659a663a Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Sat, 28 Feb 2009 15:20:33 +0100 Subject: socket_util: unpack V4MAPPED addresses Unpack IPv4 addresses which are packed inside an IPv6 address, i.e. return "127.0.0.1" rather than "::ffff:127.0.0.1". --- src/socket_util.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'src') diff --git a/src/socket_util.c b/src/socket_util.c index 240577fc6..31b656326 100644 --- a/src/socket_util.c +++ b/src/socket_util.c @@ -29,9 +29,29 @@ char * sockaddr_to_string(const struct sockaddr *sa, size_t length, GError **error) { +#ifdef HAVE_IPV6 + const struct sockaddr_in6 *a6 = (const struct sockaddr_in6 *)sa; + struct sockaddr_in a4; +#endif int ret; char host[NI_MAXHOST], serv[NI_MAXSERV]; +#ifdef HAVE_IPV6 + if (sa->sa_family == AF_INET6 && + IN6_IS_ADDR_V4MAPPED(&a6->sin6_addr)) { + /* convert "::ffff:127.0.0.1" to "127.0.0.1" */ + + memset(&a4, 0, sizeof(a4)); + a4.sin_family = AF_INET; + memcpy(&a4.sin_addr, ((const char *)&a6->sin6_addr) + 12, + sizeof(a4.sin_addr)); + a4.sin_port = a6->sin6_port; + + sa = (const struct sockaddr *)&a4; + length = sizeof(a4); + } +#endif + ret = getnameinfo(sa, length, host, sizeof(host), serv, sizeof(serv), NI_NUMERICHOST|NI_NUMERICSERV); if (ret != 0) { -- cgit v1.2.3