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ws2_32: Work around the host name resolving to 127.x.x.x when using that for binding.

This commit is contained in:
Kai Blin 2008-04-24 13:45:10 +02:00 committed by Alexandre Julliard
parent 9359ff6fe0
commit 1bcbe8651a
1 changed files with 22 additions and 1 deletions
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23
dlls/ws2_32/socket.c
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@ -3,7 +3,7 @@
*
* Copyright (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
* Copyright (C) 2005 Marcus Meissner
* Copyright (C) 2006 Kai Blin
* Copyright (C) 2006-2008 Kai Blin
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -359,6 +359,8 @@ static const int ws_eai_map[][2] =
{ 0, 0 }
};
static const char magic_loopback_addr[] = {127, 12, 34, 56};
static inline DWORD NtStatusToWSAError( const DWORD status )
{
/* We only need to cover the status codes set by server async request handling */
@ -1427,6 +1429,18 @@ int WINAPI WS_bind(SOCKET s, const struct WS_sockaddr* name, int namelen)
}
}
#endif
if (name->sa_family == WS_AF_INET)
{
struct sockaddr_in *in4 = (struct sockaddr_in*) &uaddr;
if (memcmp(&in4->sin_addr, &magic_loopback_addr, 4) == 0)
{
/* Trying to bind to the default host interface, using
* INADDR_ANY instead*/
WARN("Trying to bind to magic IP address, using "
"INADDR_ANY instead.\n");
in4->sin_addr.s_addr = htonl(WS_INADDR_ANY);
}
}
if (bind(fd, &uaddr.addr, uaddrlen) < 0)
{
int loc_errno = errno;
@ -3230,6 +3244,13 @@ struct WS_hostent* WINAPI WS_gethostbyname(const char* name)
#else
LeaveCriticalSection( &csWSgetXXXbyYYY );
#endif
if (retval->h_addr_list[0][0] == 127 &&
strcmp(name, "localhost") != 0)
{
/* hostname != "localhost" but has loopback address. replace by our
* special address.*/
memcpy(retval->h_addr_list[0], magic_loopback_addr, 4);
}
TRACE( "%s ret %p\n", debugstr_a(name), retval );
return retval;
}