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[ACE6] Fixes for IPv6 multicast and inet_ntop/inet_pton on Windows #1352

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merged 4 commits into from
Jan 5, 2021
Merged

[ACE6] Fixes for IPv6 multicast and inet_ntop/inet_pton on Windows #1352

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4347126
Fixes for IPv6 on Windows
kuznetsovmoci Dec 23, 2020
f5c406b
Removed trailing whitespace
kuznetsovmoci Dec 23, 2020
96c0e79
Fixes as per PR#1352 review
kuznetsovmoci Jan 4, 2021
eb4963c
Fixes as per PR#1352 review
kuznetsovmoci Jan 4, 2021
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44 changes: 27 additions & 17 deletions ACE/ace/SOCK_Dgram.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -786,21 +786,34 @@ ACE_SOCK_Dgram::make_multicast_ifaddr6 (ipv6_mreq *ret_mreq,
ACE_OS::ace_isdigit (net_if[0]) &&
(if_ix = ACE_OS::atoi (net_if)) > 0;

IP_ADAPTER_ADDRESSES tmp_addrs;
// Initial call to determine actual memory size needed
ULONG bufLen = 0;
ULONG bufLen = 15000; // Initial size as per Microsoft
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char *buf = 0;
if (::GetAdaptersAddresses (AF_INET6, 0, 0, &tmp_addrs, &bufLen)
== ERROR_BUFFER_OVERFLOW)
ACE_NEW_RETURN (buf, char[bufLen], -1);
DWORD dwRetVal = 0;
ULONG iterations = 0;
ULONG const maxTries = 3;
PIP_ADAPTER_ADDRESSES pAddrs;
do
{
ACE_NEW_RETURN (buf, char[bufLen], -1);
}
pAddrs = reinterpret_cast<PIP_ADAPTER_ADDRESSES> (buf);
dwRetVal = ::GetAdaptersAddresses (AF_INET6, 0, 0, pAddrs, &bufLen);
if (dwRetVal == ERROR_BUFFER_OVERFLOW)
{
delete[] buf;
ACE_NEW_RETURN (buf, char[bufLen], -1);
++iterations;
}
else
{
break;
}
} while (dwRetVal == ERROR_BUFFER_OVERFLOW && iterations < maxTries);

// Get required output buffer and retrieve info for real.
PIP_ADAPTER_ADDRESSES pAddrs = reinterpret_cast<PIP_ADAPTER_ADDRESSES> (buf);
if (::GetAdaptersAddresses (AF_INET6, 0, 0, pAddrs, &bufLen) != NO_ERROR)
if (dwRetVal != NO_ERROR)
{
pAddrs = 0;
delete[] buf;
errno = EINVAL;
return -1;
}

while (pAddrs)
Expand All @@ -819,14 +832,11 @@ ACE_SOCK_Dgram::make_multicast_ifaddr6 (ipv6_mreq *ret_mreq,

delete[] buf; // clean up

#endif /* ACE_WIN32 */
#else /* ACE_WIN32 */
#ifndef ACE_LACKS_IF_NAMETOINDEX
if (lmreq.ipv6mr_interface == 0)
{
lmreq.ipv6mr_interface = ACE_OS::if_nametoindex (ACE_TEXT_ALWAYS_CHAR (net_if));
}

lmreq.ipv6mr_interface = ACE_OS::if_nametoindex (ACE_TEXT_ALWAYS_CHAR (net_if));
#endif /* ACE_LACKS_IF_NAMETOINDEX */
#endif /* ACE_WIN32 */
if (lmreq.ipv6mr_interface == 0)
{
errno = EINVAL;
Expand Down
6 changes: 2 additions & 4 deletions ACE/ace/config-win32-common.h
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Original file line number Diff line number Diff line change
Expand Up @@ -278,10 +278,6 @@
#define ACE_LACKS_GETIPNODEBYNAME_IPV6
#define ACE_LACKS_KILL
#define ACE_LACKS_INET_ATON
#if _WIN32_WINNT < 0x0600
# define ACE_LACKS_INET_NTOP
# define ACE_LACKS_INET_PTON
#endif
#define ACE_LACKS_MADVISE
#define ACE_LACKS_MKFIFO
#define ACE_LACKS_MODE_MASKS
Expand Down Expand Up @@ -566,6 +562,8 @@
# define ACE_HAS_WIN32_TRYLOCK
#endif
#if _WIN32_WINNT < 0x600
# define ACE_LACKS_INET_NTOP
# define ACE_LACKS_INET_PTON
# define ACE_LACKS_IF_NAMETOINDEX
#endif
#define ACE_LACKS_IF_NAMEINDEX
Expand Down