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* fhandler.h (fhandler_socket::eid_connect): Make private. 

(fhandler_socket::set_connect_secret): Ditto.
	(fhandler_socket::get_connect_secret): Ditto.
	(fhandler_socket::create_secret_event): Ditto. Remove secret argument.
	(fhandler_socket::check_peer_secret_event): Ditto.
	(fhandler_socket::signal_secret_event): Make private.
	(fhandler_socket::close_secret_event): Ditto.
	(fhandler_socket::sec_event_accept): New private method.
	(fhandler_socket::sec_event_connect): Ditto.
	(fhandler_socket::af_local_connect): New public method.
	* fhandler_socket.cc: Use 'struct sockaddr' and 'struct sockaddr_in'
	rather than just 'sockaddr' and 'sockaddr_in' throughout.
	(fhandler_socket::eid_connect): Drop AF_LOCAL/SOCK_STREAM test.
	(fhandler_socket::create_secret_event): Remove secret argument.
	Always use connect_secret instead.
	(fhandler_socket::check_peer_secret_event): Ditto.
	(fhandler_socket::sec_event_connect): New method, combining entire
	secret event handshake on connect side.
	(fhandler_socket::af_local_connect): New method, combining secret
	event handshake and eid credential transaction on connect side, to
	be called from select.
	(fhandler_socket::sec_event_accept): New method, combining entire
	secret event handshake on accept side.
	(fhandler_socket::connect): Drop secret, use connect_secret instead.
	Move entire secret event handshake to sec_event_connect.
	(fhandler_socket::accept): Move entire secret event handshake to
	sec_event_accept.
	* select.cc (set_bits): Just call af_local_connect here.
This commit is contained in:
Corinna Vinschen 2005-03-23 17:27:18 +00:00
parent bc3f9e29d0
commit a6099ff810
4 changed files with 135 additions and 76 deletions
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31
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,34 @@
2005-03-23 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (fhandler_socket::eid_connect): Make private.
(fhandler_socket::set_connect_secret): Ditto.
(fhandler_socket::get_connect_secret): Ditto.
(fhandler_socket::create_secret_event): Ditto. Remove secret argument.
(fhandler_socket::check_peer_secret_event): Ditto.
(fhandler_socket::signal_secret_event): Make private.
(fhandler_socket::close_secret_event): Ditto.
(fhandler_socket::sec_event_accept): New private method.
(fhandler_socket::sec_event_connect): Ditto.
(fhandler_socket::af_local_connect): New public method.
* fhandler_socket.cc: Use 'struct sockaddr' and 'struct sockaddr_in'
rather than just 'sockaddr' and 'sockaddr_in' throughout.
(fhandler_socket::eid_connect): Drop AF_LOCAL/SOCK_STREAM test.
(fhandler_socket::create_secret_event): Remove secret argument.
Always use connect_secret instead.
(fhandler_socket::check_peer_secret_event): Ditto.
(fhandler_socket::sec_event_connect): New method, combining entire
secret event handshake on connect side.
(fhandler_socket::af_local_connect): New method, combining secret
event handshake and eid credential transaction on connect side, to
be called from select.
(fhandler_socket::sec_event_accept): New method, combining entire
secret event handshake on accept side.
(fhandler_socket::connect): Drop secret, use connect_secret instead.
Move entire secret event handshake to sec_event_connect.
(fhandler_socket::accept): Move entire secret event handshake to
sec_event_accept.
* select.cc (set_bits): Just call af_local_connect here.
2005-03-23 Christopher Faylor <cgf@timesys.com>
* include/cygwin/version.h: Change coment for most recent API version

13
winsup/cygwin/fhandler.h
View File

@ -376,8 +376,8 @@ class fhandler_socket: public fhandler_base
bool eid_recv (void);
bool eid_send (void);
void eid_accept (void);
public:
void eid_connect (void);
public:
void set_socketpair_eids (void);
private:
@ -458,12 +458,19 @@ class fhandler_socket: public fhandler_base
int get_socket_type () {return type;}
void set_sun_path (const char *path);
char *get_sun_path () {return sun_path;}
private:
void set_connect_secret ();
void get_connect_secret (char*);
HANDLE create_secret_event (int *secret = NULL);
int check_peer_secret_event (struct sockaddr_in *peer, int *secret = NULL);
HANDLE create_secret_event ();
int check_peer_secret_event (struct sockaddr_in *peer);
void signal_secret_event ();
void close_secret_event ();
int sec_event_accept (int, struct sockaddr_in *);
int sec_event_connect (struct sockaddr_in *peer);
public:
int af_local_connect (void);
int __stdcall fstat (struct __stat64 *buf) __attribute__ ((regparm (2)));
int __stdcall fchmod (mode_t mode) __attribute__ ((regparm (1)));
int __stdcall fchown (__uid32_t uid, __gid32_t gid) __attribute__ ((regparm (2)));

152
winsup/cygwin/fhandler_socket.cc
View File

@ -65,7 +65,7 @@ get_inet_addr (const struct sockaddr *in, int inlen,
if (in->sa_family == AF_INET)
{
*out = * (sockaddr_in *)in;
*out = * (struct sockaddr_in *)in;
*outlen = inlen;
return 1;
}
@ -100,7 +100,7 @@ get_inet_addr (const struct sockaddr *in, int inlen,
memset (buf, 0, sizeof buf);
if (ReadFile (fh, buf, 128, &len, 0))
{
sockaddr_in sin;
struct sockaddr_in sin;
sin.sin_family = AF_INET;
sscanf (buf + strlen (SOCKET_COOKIE), "%hu %08x-%08x-%08x-%08x",
&sin.sin_port,
@ -238,10 +238,6 @@ fhandler_socket::eid_send (void)
void
fhandler_socket::eid_connect (void)
{
/* This test allows to keep select.cc clean from boring implementation
details. */
if (get_addr_family () != AF_LOCAL || get_socket_type () != SOCK_STREAM)
return;
debug_printf ("eid_connect called");
bool orig_async_io, orig_is_nonblocking;
eid_setblocking (orig_async_io, orig_is_nonblocking);
@ -306,7 +302,7 @@ fhandler_socket::get_connect_secret (char* buf)
}
HANDLE
fhandler_socket::create_secret_event (int* secret)
fhandler_socket::create_secret_event ()
{
struct sockaddr_in sin;
int sin_len = sizeof (sin);
@ -321,7 +317,7 @@ fhandler_socket::create_secret_event (int* secret)
}
char event_name[CYG_MAX_PATH];
secret_event_name (event_name, sin.sin_port, secret ?: connect_secret);
secret_event_name (event_name, sin.sin_port, connect_secret);
secret_event = CreateEvent (&sec_all, FALSE, FALSE, event_name);
if (!secret_event)
@ -354,12 +350,12 @@ fhandler_socket::close_secret_event ()
}
int
fhandler_socket::check_peer_secret_event (struct sockaddr_in* peer, int* secret)
fhandler_socket::check_peer_secret_event (struct sockaddr_in *peer)
{
char event_name[CYG_MAX_PATH];
secret_event_name (event_name, peer->sin_port, secret ?: connect_secret);
secret_event_name (event_name, peer->sin_port, connect_secret);
HANDLE ev = CreateEvent (&sec_all_nih, FALSE, FALSE, event_name);
if (!ev)
debug_printf("create event %E");
@ -377,6 +373,78 @@ fhandler_socket::check_peer_secret_event (struct sockaddr_in* peer, int* secret)
return 0;
}
int
fhandler_socket::sec_event_connect (struct sockaddr_in *peer)
{
bool secret_check_failed = false;
struct sockaddr_in sin;
int siz = sizeof sin;
debug_printf ("sec_event_connect called");
if (!peer)
{
if (::getpeername (get_socket (), (struct sockaddr *) &sin, &siz))
goto err;
peer = &sin;
}
if (!create_secret_event ())
secret_check_failed = true;
if (!secret_check_failed && !check_peer_secret_event (peer))
{
debug_printf ("accept from unauthorized server");
secret_check_failed = true;
}
if (!secret_check_failed)
return 0;
err:
close_secret_event ();
closesocket (get_socket ());
WSASetLastError (WSAECONNREFUSED);
set_winsock_errno ();
return -1;
}
/* Called from select(). It combines the secret event handshake and
the eid credential transaction into one call. This keeps implementation
details from select. */
int
fhandler_socket::af_local_connect (void)
{
if (get_addr_family () != AF_LOCAL || get_socket_type () != SOCK_STREAM)
return 0;
int ret = sec_event_connect (NULL);
if (!ret)
eid_connect ();
return ret;
}
int
fhandler_socket::sec_event_accept (int sock, struct sockaddr_in *peer)
{
bool secret_check_failed = false;
debug_printf ("sec_event_accept called");
if (!create_secret_event ())
secret_check_failed = true;
if (!secret_check_failed
&& !check_peer_secret_event (peer))
{
debug_printf ("connect from unauthorized client");
secret_check_failed = true;
}
if (secret_check_failed)
{
close_secret_event ();
closesocket (sock);
set_errno (ECONNABORTED);
return -1;
}
return sock;
}
void
fhandler_socket::fixup_before_fork_exec (DWORD win_proc_id)
{
@ -687,16 +755,14 @@ int
fhandler_socket::connect (const struct sockaddr *name, int namelen)
{
int res = -1;
bool secret_check_failed = false;
bool in_progress = false;
sockaddr_in sin;
int secret [4];
struct sockaddr_in sin;
DWORD err;
if (!get_inet_addr (name, namelen, &sin, &namelen, secret))
if (!get_inet_addr (name, namelen, &sin, &namelen, connect_secret))
return -1;
res = ::connect (get_socket (), (sockaddr *) &sin, namelen);
res = ::connect (get_socket (), (struct sockaddr *) &sin, namelen);
if (!res)
err = 0;
@ -723,34 +789,6 @@ fhandler_socket::connect (const struct sockaddr *name, int namelen)
if (get_addr_family () == AF_LOCAL && get_socket_type () == SOCK_STREAM)
{
if (!res || in_progress)
{
if (!create_secret_event (secret))
{
secret_check_failed = true;
}
else if (in_progress)
signal_secret_event ();
}
if (!secret_check_failed && !res)
{
if (!check_peer_secret_event (&sin, secret))
{
debug_printf ("accept from unauthorized server");
secret_check_failed = true;
}
}
if (secret_check_failed)
{
close_secret_event ();
if (res)
closesocket (res);
set_errno (ECONNREFUSED);
res = -1;
}
/* Prepare eid credential transaction. */
sec_pid = getpid ();
sec_uid = geteuid32 ();
@ -759,6 +797,9 @@ fhandler_socket::connect (const struct sockaddr *name, int namelen)
sec_peer_uid = (__uid32_t) -1;
sec_peer_gid = (__gid32_t) -1;
if (!res)
res = sec_event_connect (&sin);
if (!res)
{
/* eid credential transaction. If connect is in progress,
@ -803,7 +844,6 @@ int
fhandler_socket::accept (struct sockaddr *peer, int *len)
{
int res = -1;
bool secret_check_failed = false;
/* Allows NULL peer and len parameters. */
struct sockaddr_in peer_dummy;
@ -827,27 +867,7 @@ fhandler_socket::accept (struct sockaddr *peer, int *len)
if ((SOCKET) res != INVALID_SOCKET && get_addr_family () == AF_LOCAL
&& get_socket_type () == SOCK_STREAM)
{
if (!create_secret_event ())
secret_check_failed = true;
if (!secret_check_failed)
{
if (!check_peer_secret_event ((struct sockaddr_in*) peer))
{
debug_printf ("connect from unauthorized client");
secret_check_failed = true;
}
}
if (secret_check_failed)
{
close_secret_event ();
closesocket (res);
set_errno (ECONNABORTED);
return -1;
}
}
res = sec_event_accept (res, (struct sockaddr_in *) peer);
if ((SOCKET) res == INVALID_SOCKET)
set_winsock_errno ();
@ -1256,7 +1276,7 @@ int
fhandler_socket::sendto (const void *ptr, size_t len, int flags,
const struct sockaddr *to, int tolen)
{
sockaddr_in sin;
struct sockaddr_in sin;
if (to && !get_inet_addr (to, tolen, &sin, &tolen))
return SOCKET_ERROR;

15
winsup/cygwin/select.cc
View File

@ -338,11 +338,10 @@ set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
UNIX_FD_SET (me->fd, writefds);
if (me->except_on_write && (sock = me->fh->is_socket ()))
{
/* eid credential transaction on successful non-blocking connect.
Since the read bit indicates an error, don't start transaction
if it's set. */
if (!me->read_ready && sock->connect_state () == connect_pending)
sock->eid_connect ();
/* Special AF_LOCAL handling. */
if (!me->read_ready && sock->connect_state () == connect_pending
&& sock->af_local_connect () && me->read_selected)
UNIX_FD_SET (me->fd, readfds);
sock->connect_state (connected);
}
ready++;
@ -354,8 +353,10 @@ set_bits (select_record *me, fd_set *readfds, fd_set *writefds,
UNIX_FD_SET (me->fd, writefds);
if ((sock = me->fh->is_socket ()))
{
if (!me->read_ready && sock->connect_state () == connect_pending)
sock->eid_connect ();
/* Special AF_LOCAL handling. */
if (!me->read_ready && sock->connect_state () == connect_pending
&& sock->af_local_connect () && me->read_selected)
UNIX_FD_SET (me->fd, readfds);
sock->connect_state (connected);
}
}