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* net.cc: Replace usage of AF_UNIX by Posix compliant AF_LOCAL 

throughout.
	(socketpair): Explicitly allow SOCK_STREAM and SOCK_DGRAM socket types
	in families AF_UNIX and AF_LOCAL.  Explicitly allow PF_UNSPEC, PF_LOCAL
	and PF_INET protocols.  Return error otherwise.  Implement datagram
	socketpairs.
This commit is contained in:
Corinna Vinschen 2002-01-04 16:56:53 +00:00
parent d48d56d07b
commit dc63cea5ed
2 changed files with 123 additions and 29 deletions
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9
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,12 @@
2001-01-04 Corinna Vinschen <corinna@vinschen.de>
* net.cc: Replace usage of AF_UNIX by Posix compliant AF_LOCAL
throughout.
(socketpair): Explicitly allow SOCK_STREAM and SOCK_DGRAM socket types
in families AF_UNIX and AF_LOCAL. Explicitly allow PF_UNSPEC, PF_LOCAL
and PF_INET protocols. Return error otherwise. Implement datagram
socketpairs.
2002-01-01 Christopher Faylor <cgf@redhat.com> 2002-01-01 Christopher Faylor <cgf@redhat.com>
* speclib: Remove temp files automatically. * speclib: Remove temp files automatically.

143
winsup/cygwin/net.cc
View File

@ -541,7 +541,7 @@ cygwin_socket (int af, int type, int protocol)
{ {
debug_printf ("socket (%d, %d, %d)", af, type, protocol); debug_printf ("socket (%d, %d, %d)", af, type, protocol);
soc = socket (AF_INET, type, af == AF_UNIX ? 0 : protocol); soc = socket (AF_INET, type, af == AF_LOCAL ? 0 : protocol);
if (soc == INVALID_SOCKET) if (soc == INVALID_SOCKET)
{ {
@ -578,7 +578,7 @@ static int get_inet_addr (const struct sockaddr *in, int inlen,
*outlen = inlen; *outlen = inlen;
return 1; return 1;
} }
else if (in->sa_family == AF_UNIX) else if (in->sa_family == AF_LOCAL)
{ {
int fd = _open (in->sa_data, O_RDONLY); int fd = _open (in->sa_data, O_RDONLY);
if (fd == -1) if (fd == -1)
@ -897,7 +897,7 @@ cygwin_connect (int fd,
} }
set_winsock_errno (); set_winsock_errno ();
} }
if (sock->get_addr_family () == AF_UNIX) if (sock->get_addr_family () == AF_LOCAL)
{ {
if (!res || in_progress) if (!res || in_progress)
{ {
@ -1215,7 +1215,7 @@ cygwin_accept (int fd, struct sockaddr *peer, int *len)
WSAGetLastError () == WSAEWOULDBLOCK) WSAGetLastError () == WSAEWOULDBLOCK)
in_progress = TRUE; in_progress = TRUE;
if (sock->get_addr_family () == AF_UNIX) if (sock->get_addr_family () == AF_LOCAL)
{ {
if ((SOCKET) res != (SOCKET) INVALID_SOCKET || in_progress) if ((SOCKET) res != (SOCKET) INVALID_SOCKET || in_progress)
{ {
@ -1276,7 +1276,7 @@ cygwin_bind (int fd, const struct sockaddr *my_addr, int addrlen)
fhandler_socket *sock = get (fd); fhandler_socket *sock = get (fd);
if (sock) if (sock)
{ {
if (my_addr->sa_family == AF_UNIX) if (my_addr->sa_family == AF_LOCAL)
{ {
#define un_addr ((struct sockaddr_un *) my_addr) #define un_addr ((struct sockaddr_un *) my_addr)
struct sockaddr_in sin; struct sockaddr_in sin;
@ -1293,19 +1293,19 @@ cygwin_bind (int fd, const struct sockaddr *my_addr, int addrlen)
sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK); sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
if (bind (sock->get_socket (), (sockaddr *) &sin, len)) if (bind (sock->get_socket (), (sockaddr *) &sin, len))
{ {
syscall_printf ("AF_UNIX: bind failed %d", get_errno ()); syscall_printf ("AF_LOCAL: bind failed %d", get_errno ());
set_winsock_errno (); set_winsock_errno ();
goto out; goto out;
} }
if (getsockname (sock->get_socket (), (sockaddr *) &sin, &len)) if (getsockname (sock->get_socket (), (sockaddr *) &sin, &len))
{ {
syscall_printf ("AF_UNIX: getsockname failed %d", get_errno ()); syscall_printf ("AF_LOCAL: getsockname failed %d", get_errno ());
set_winsock_errno (); set_winsock_errno ();
goto out; goto out;
} }
sin.sin_port = ntohs (sin.sin_port); sin.sin_port = ntohs (sin.sin_port);
debug_printf ("AF_UNIX: socket bound to port %u", sin.sin_port); debug_printf ("AF_LOCAL: socket bound to port %u", sin.sin_port);
/* bind must fail if file system socket object already exists /* bind must fail if file system socket object already exists
so _open () is called with O_EXCL flag. */ so _open () is called with O_EXCL flag. */
@ -1367,11 +1367,11 @@ cygwin_getsockname (int fd, struct sockaddr *addr, int *namelen)
fhandler_socket *sock = get (fd); fhandler_socket *sock = get (fd);
if (sock) if (sock)
{ {
if (sock->get_addr_family () == AF_UNIX) if (sock->get_addr_family () == AF_LOCAL)
{ {
struct sockaddr_un *sun = (struct sockaddr_un *) addr; struct sockaddr_un *sun = (struct sockaddr_un *) addr;
memset (sun, 0, *namelen); memset (sun, 0, *namelen);
sun->sun_family = AF_UNIX; sun->sun_family = AF_LOCAL;
/* According to SUSv2 "If the actual length of the address is greater /* According to SUSv2 "If the actual length of the address is greater
than the length of the supplied sockaddr structure, the stored than the length of the supplied sockaddr structure, the stored
address will be truncated." We play it save here so that the address will be truncated." We play it save here so that the
@ -2322,17 +2322,34 @@ done:
/* socketpair: standards? */ /* socketpair: standards? */
/* Win32 supports AF_INET only, so ignore domain and protocol arguments */ /* Win32 supports AF_INET only, so ignore domain and protocol arguments */
extern "C" int extern "C" int
socketpair (int, int type, int, int *sb) socketpair (int family, int type, int protocol, int *sb)
{ {
int res = -1; int res = -1;
SOCKET insock, outsock, newsock; SOCKET insock, outsock, newsock;
struct sockaddr_in sock_in; struct sockaddr_in sock_in, sock_out;
int len = sizeof (sock_in); int len;
cygheap_fdnew sb0;
if (__check_null_invalid_struct_errno (sb, 2 * sizeof(int))) if (__check_null_invalid_struct_errno (sb, 2 * sizeof(int)))
return -1; return -1;
cygheap_fdnew sb0; if (family != AF_LOCAL && family != AF_INET)
{
set_errno (EAFNOSUPPORT);
goto done;
}
if (type != SOCK_STREAM && type != SOCK_DGRAM)
{
set_errno (EPROTOTYPE);
goto done;
}
if ((family == AF_LOCAL && protocol != PF_UNSPEC && protocol != PF_LOCAL)
|| (family == AF_INET && protocol != PF_UNSPEC && protocol != PF_INET))
{
set_errno (EPROTONOSUPPORT);
goto done;
}
if (sb0 < 0) if (sb0 < 0)
goto done; goto done;
else else
@ -2344,7 +2361,8 @@ socketpair (int, int type, int, int *sb)
sb[1] = sb1; sb[1] = sb1;
} }
/* create a listening socket */
/* create the first socket */
newsock = socket (AF_INET, type, 0); newsock = socket (AF_INET, type, 0);
if (newsock == INVALID_SOCKET) if (newsock == INVALID_SOCKET)
{ {
@ -2357,7 +2375,6 @@ socketpair (int, int type, int, int *sb)
sock_in.sin_family = AF_INET; sock_in.sin_family = AF_INET;
sock_in.sin_port = 0; sock_in.sin_port = 0;
sock_in.sin_addr.s_addr = INADDR_ANY; sock_in.sin_addr.s_addr = INADDR_ANY;
if (bind (newsock, (struct sockaddr *) &sock_in, sizeof (sock_in)) < 0) if (bind (newsock, (struct sockaddr *) &sock_in, sizeof (sock_in)) < 0)
{ {
debug_printf ("bind failed"); debug_printf ("bind failed");
@ -2365,7 +2382,7 @@ socketpair (int, int type, int, int *sb)
closesocket (newsock); closesocket (newsock);
goto done; goto done;
} }
len = sizeof (sock_in);
if (getsockname (newsock, (struct sockaddr *) &sock_in, &len) < 0) if (getsockname (newsock, (struct sockaddr *) &sock_in, &len) < 0)
{ {
debug_printf ("getsockname error"); debug_printf ("getsockname error");
@ -2374,7 +2391,9 @@ socketpair (int, int type, int, int *sb)
goto done; goto done;
} }
listen (newsock, 2); /* For stream sockets, create a listener */
if (type == SOCK_STREAM)
listen (newsock, 2);
/* create a connecting socket */ /* create a connecting socket */
outsock = socket (AF_INET, type, 0); outsock = socket (AF_INET, type, 0);
@ -2386,9 +2405,37 @@ socketpair (int, int type, int, int *sb)
goto done; goto done;
} }
sock_in.sin_addr.s_addr = htonl (INADDR_LOOPBACK); /* For datagram sockets, bind the 2nd socket to an unused address, too */
if (type == SOCK_DGRAM)
{
sock_out.sin_family = AF_INET;
sock_out.sin_port = 0;
sock_out.sin_addr.s_addr = INADDR_ANY;
if (bind (outsock, (struct sockaddr *) &sock_out, sizeof (sock_out)) < 0)
{
debug_printf ("bind failed");
set_winsock_errno ();
closesocket (newsock);
closesocket (outsock);
goto done;
}
len = sizeof (sock_out);
if (getsockname (outsock, (struct sockaddr *) &sock_out, &len) < 0)
{
debug_printf ("getsockname error");
set_winsock_errno ();
closesocket (newsock);
closesocket (outsock);
goto done;
}
}
/* Do a connect and accept the connection */ /* Force IP address to loopback */
sock_in.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
if (type == SOCK_DGRAM)
sock_out.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
/* Do a connect */
if (connect (outsock, (struct sockaddr *) &sock_in, if (connect (outsock, (struct sockaddr *) &sock_in,
sizeof (sock_in)) < 0) sizeof (sock_in)) < 0)
{ {
@ -2399,22 +2446,60 @@ socketpair (int, int type, int, int *sb)
goto done; goto done;
} }
insock = accept (newsock, (struct sockaddr *) &sock_in, &len); if (type == SOCK_STREAM)
if (insock == INVALID_SOCKET)
{ {
debug_printf ("accept error"); /* For stream sockets, accept the connection and close the listener */
set_winsock_errno (); len = sizeof (sock_in);
insock = accept (newsock, (struct sockaddr *) &sock_in, &len);
if (insock == INVALID_SOCKET)
{
debug_printf ("accept error");
set_winsock_errno ();
closesocket (newsock);
closesocket (outsock);
goto done;
}
closesocket (newsock); closesocket (newsock);
closesocket (outsock); }
goto done; else
{
/* For datagram sockets, connect the 2nd socket */
if (connect (newsock, (struct sockaddr *) &sock_out,
sizeof (sock_out)) < 0)
{
debug_printf ("connect error");
set_winsock_errno ();
closesocket (newsock);
closesocket (outsock);
goto done;
}
insock = newsock;
} }
closesocket (newsock);
res = 0; res = 0;
fdsock (sb[0], "/dev/tcp", insock); if (family == AF_LOCAL)
{
fhandler_socket *fh;
fdsock (sb[1], "/dev/tcp", outsock); fh = fdsock (sb[0],
type == SOCK_STREAM ? "/dev/streamsocket" : "/dev/dgsocket",
insock);
fh->set_sun_path ("");
fh->set_addr_family (AF_LOCAL);
fh = fdsock (sb[1],
type == SOCK_STREAM ? "/dev/streamsocket" : "/dev/dgsocket",
outsock);
fh->set_sun_path ("");
fh->set_addr_family (AF_LOCAL);
}
else
{
fdsock (sb[0], type == SOCK_STREAM ? "/dev/tcp" : "/dev/udp",
insock)->set_addr_family (AF_INET);
fdsock (sb[1], type == SOCK_STREAM ? "/dev/tcp" : "/dev/udp",
outsock)->set_addr_family (AF_INET);
}
done: done:
syscall_printf ("%d = socketpair (...)", res); syscall_printf ("%d = socketpair (...)", res);