1601 lines
37 KiB
C++
1601 lines
37 KiB
C++
/* fhandler_socket.cc. See fhandler.h for a description of the fhandler classes.
|
|
|
|
Copyright 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
/* #define DEBUG_NEST_ON 1 */
|
|
|
|
#define __INSIDE_CYGWIN_NET__
|
|
|
|
#include "winsup.h"
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <sys/uio.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
#include <stdlib.h>
|
|
#define USE_SYS_TYPES_FD_SET
|
|
#include <winsock2.h>
|
|
#include "cygerrno.h"
|
|
#include "security.h"
|
|
#include "cygwin/version.h"
|
|
#include "perprocess.h"
|
|
#include "path.h"
|
|
#include "fhandler.h"
|
|
#include "dtable.h"
|
|
#include "cygheap.h"
|
|
#include "sigproc.h"
|
|
#include "cygthread.h"
|
|
#include "select.h"
|
|
#include "wininfo.h"
|
|
#include <unistd.h>
|
|
#include <sys/acl.h>
|
|
#include "cygtls.h"
|
|
|
|
#define ASYNC_MASK (FD_READ|FD_WRITE|FD_OOB|FD_ACCEPT|FD_CONNECT)
|
|
|
|
extern bool fdsock (cygheap_fdmanip& fd, const device *, SOCKET soc);
|
|
extern "C" {
|
|
int sscanf (const char *, const char *, ...);
|
|
} /* End of "C" section */
|
|
|
|
fhandler_dev_random* entropy_source;
|
|
|
|
/* cygwin internal: map sockaddr into internet domain address */
|
|
static int
|
|
get_inet_addr (const struct sockaddr *in, int inlen,
|
|
struct sockaddr_in *out, int *outlen,
|
|
int *type = NULL, int *secret = NULL)
|
|
{
|
|
int secret_buf [4];
|
|
int* secret_ptr = (secret ? : secret_buf);
|
|
|
|
if (in->sa_family == AF_INET)
|
|
{
|
|
*out = * (struct sockaddr_in *)in;
|
|
*outlen = inlen;
|
|
return 1;
|
|
}
|
|
else if (in->sa_family == AF_LOCAL)
|
|
{
|
|
path_conv pc (in->sa_data, PC_SYM_FOLLOW);
|
|
if (pc.error)
|
|
{
|
|
set_errno (pc.error);
|
|
return 0;
|
|
}
|
|
if (!pc.exists ())
|
|
{
|
|
set_errno (ENOENT);
|
|
return 0;
|
|
}
|
|
if (!pc.issocket ())
|
|
{
|
|
set_errno (EBADF);
|
|
return 0;
|
|
}
|
|
HANDLE fh = CreateFile (pc, GENERIC_READ, wincap.shared (), &sec_none,
|
|
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
|
|
if (fh == INVALID_HANDLE_VALUE)
|
|
{
|
|
__seterrno ();
|
|
return 0;
|
|
}
|
|
int ret = 0;
|
|
DWORD len = 0;
|
|
char buf[128];
|
|
memset (buf, 0, sizeof buf);
|
|
if (ReadFile (fh, buf, 128, &len, 0))
|
|
{
|
|
struct sockaddr_in sin;
|
|
char ctype;
|
|
sin.sin_family = AF_INET;
|
|
sscanf (buf + strlen (SOCKET_COOKIE), "%hu %c %08x-%08x-%08x-%08x",
|
|
&sin.sin_port,
|
|
&ctype,
|
|
secret_ptr, secret_ptr + 1, secret_ptr + 2, secret_ptr + 3);
|
|
sin.sin_port = htons (sin.sin_port);
|
|
sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
|
|
*out = sin;
|
|
*outlen = sizeof sin;
|
|
if (type)
|
|
*type = (ctype == 's' ? SOCK_STREAM :
|
|
ctype == 'd' ? SOCK_DGRAM
|
|
: 0);
|
|
ret = 1;
|
|
}
|
|
else
|
|
__seterrno ();
|
|
CloseHandle (fh);
|
|
return ret;
|
|
}
|
|
else
|
|
{
|
|
set_errno (EAFNOSUPPORT);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* fhandler_socket */
|
|
|
|
fhandler_socket::fhandler_socket () :
|
|
fhandler_base (),
|
|
sun_path (NULL),
|
|
status ()
|
|
{
|
|
need_fork_fixup (true);
|
|
prot_info_ptr = (LPWSAPROTOCOL_INFOA) cmalloc (HEAP_BUF,
|
|
sizeof (WSAPROTOCOL_INFOA));
|
|
#if 0
|
|
if (pc.is_fs_special ())
|
|
{
|
|
fhandler_socket * fhs = (fhandler_socket *) fh;
|
|
fhs->set_addr_family (AF_LOCAL);
|
|
fhs->set_sun_path (posix_path);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
fhandler_socket::~fhandler_socket ()
|
|
{
|
|
if (prot_info_ptr)
|
|
cfree (prot_info_ptr);
|
|
if (sun_path)
|
|
cfree (sun_path);
|
|
}
|
|
|
|
char *
|
|
fhandler_socket::get_proc_fd_name (char *buf)
|
|
{
|
|
__small_sprintf (buf, "socket:[%d]", get_socket ());
|
|
return buf;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::open (int flags, mode_t mode)
|
|
{
|
|
set_errno (ENXIO);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
fhandler_socket::af_local_set_sockpair_cred ()
|
|
{
|
|
sec_pid = sec_peer_pid = getpid ();
|
|
sec_uid = sec_peer_uid = geteuid32 ();
|
|
sec_gid = sec_peer_gid = getegid32 ();
|
|
}
|
|
|
|
void
|
|
fhandler_socket::af_local_setblocking (bool &async, bool &nonblocking)
|
|
{
|
|
async = async_io ();
|
|
nonblocking = is_nonblocking ();
|
|
if (async || nonblocking)
|
|
WSAAsyncSelect (get_socket (), winmsg, 0, 0);
|
|
unsigned long p = 0;
|
|
ioctlsocket (get_socket (), FIONBIO, &p);
|
|
set_nonblocking (false);
|
|
async_io (false);
|
|
}
|
|
|
|
void
|
|
fhandler_socket::af_local_unsetblocking (bool async, bool nonblocking)
|
|
{
|
|
if (nonblocking)
|
|
{
|
|
unsigned long p = 1;
|
|
ioctlsocket (get_socket (), FIONBIO, &p);
|
|
set_nonblocking (true);
|
|
}
|
|
if (async)
|
|
{
|
|
WSAAsyncSelect (get_socket (), winmsg, WM_ASYNCIO, ASYNC_MASK);
|
|
async_io (true);
|
|
}
|
|
}
|
|
|
|
bool
|
|
fhandler_socket::af_local_recv_secret ()
|
|
{
|
|
int out[4] = { 0, 0, 0, 0 };
|
|
int rest = sizeof out;
|
|
char *ptr = (char *) out;
|
|
while (rest > 0)
|
|
{
|
|
int ret = recvfrom (ptr, rest, 0, NULL, NULL);
|
|
if (ret <= 0)
|
|
break;
|
|
rest -= ret;
|
|
ptr += ret;
|
|
}
|
|
if (rest == 0)
|
|
{
|
|
debug_printf ("Received af_local secret: %08x-%08x-%08x-%08x",
|
|
out[0], out[1], out[2], out[3]);
|
|
if (out[0] != connect_secret[0] || out[1] != connect_secret[1]
|
|
|| out[2] != connect_secret[2] || out[3] != connect_secret[3])
|
|
{
|
|
debug_printf ("Receiving af_local secret mismatch");
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
debug_printf ("Receiving af_local secret failed");
|
|
return rest == 0;
|
|
}
|
|
|
|
bool
|
|
fhandler_socket::af_local_send_secret ()
|
|
{
|
|
int rest = sizeof connect_secret;
|
|
char *ptr = (char *) connect_secret;
|
|
while (rest > 0)
|
|
{
|
|
int ret = sendto (ptr, rest, 0, NULL, 0);
|
|
if (ret <= 0)
|
|
break;
|
|
rest -= ret;
|
|
ptr += ret;
|
|
}
|
|
debug_printf ("Sending af_local secret %s", rest == 0 ? "succeeded"
|
|
: "failed");
|
|
return rest == 0;
|
|
}
|
|
|
|
bool
|
|
fhandler_socket::af_local_recv_cred ()
|
|
{
|
|
struct ucred out = { (pid_t) 0, (__uid32_t) -1, (__gid32_t) -1 };
|
|
int rest = sizeof out;
|
|
char *ptr = (char *) &out;
|
|
while (rest > 0)
|
|
{
|
|
int ret = recvfrom (ptr, rest, 0, NULL, NULL);
|
|
if (ret <= 0)
|
|
break;
|
|
rest -= ret;
|
|
ptr += ret;
|
|
}
|
|
if (rest == 0)
|
|
{
|
|
debug_printf ("Received eid credentials: pid: %d, uid: %d, gid: %d",
|
|
out.pid, out.uid, out.gid);
|
|
sec_peer_pid = out.pid;
|
|
sec_peer_uid = out.uid;
|
|
sec_peer_gid = out.gid;
|
|
}
|
|
else
|
|
debug_printf ("Receiving eid credentials failed");
|
|
return rest == 0;
|
|
}
|
|
|
|
bool
|
|
fhandler_socket::af_local_send_cred ()
|
|
{
|
|
struct ucred in = { sec_pid, sec_uid, sec_gid };
|
|
int rest = sizeof in;
|
|
char *ptr = (char *) ∈
|
|
while (rest > 0)
|
|
{
|
|
int ret = sendto (ptr, rest, 0, NULL, 0);
|
|
if (ret <= 0)
|
|
break;
|
|
rest -= ret;
|
|
ptr += ret;
|
|
}
|
|
if (rest == 0)
|
|
debug_printf ("Sending eid credentials succeeded");
|
|
else
|
|
debug_printf ("Sending eid credentials failed");
|
|
return rest == 0;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::af_local_connect ()
|
|
{
|
|
/* This keeps the test out of select. */
|
|
if (get_addr_family () != AF_LOCAL || get_socket_type () != SOCK_STREAM)
|
|
return 0;
|
|
|
|
debug_printf ("af_local_connect called");
|
|
bool orig_async_io, orig_is_nonblocking;
|
|
af_local_setblocking (orig_async_io, orig_is_nonblocking);
|
|
if (!af_local_send_secret () || !af_local_recv_secret ()
|
|
|| !af_local_send_cred () || !af_local_recv_cred ())
|
|
{
|
|
debug_printf ("accept from unauthorized server");
|
|
::shutdown (get_socket (), SD_BOTH);
|
|
WSASetLastError (WSAECONNREFUSED);
|
|
return -1;
|
|
}
|
|
af_local_unsetblocking (orig_async_io, orig_is_nonblocking);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::af_local_accept ()
|
|
{
|
|
debug_printf ("af_local_accept called");
|
|
bool orig_async_io, orig_is_nonblocking;
|
|
af_local_setblocking (orig_async_io, orig_is_nonblocking);
|
|
if (!af_local_recv_secret () || !af_local_send_secret ()
|
|
|| !af_local_recv_cred () || !af_local_send_cred ())
|
|
{
|
|
debug_printf ("connect from unauthorized client");
|
|
::shutdown (get_socket (), SD_BOTH);
|
|
::closesocket (get_socket ());
|
|
WSASetLastError (WSAECONNABORTED);
|
|
return -1;
|
|
}
|
|
af_local_unsetblocking (orig_async_io, orig_is_nonblocking);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
fhandler_socket::af_local_set_cred ()
|
|
{
|
|
sec_pid = getpid ();
|
|
sec_uid = geteuid32 ();
|
|
sec_gid = getegid32 ();
|
|
sec_peer_pid = (pid_t) 0;
|
|
sec_peer_uid = (__uid32_t) -1;
|
|
sec_peer_gid = (__gid32_t) -1;
|
|
}
|
|
|
|
void
|
|
fhandler_socket::af_local_copy (fhandler_socket *sock)
|
|
{
|
|
sock->connect_secret[0] = connect_secret[0];
|
|
sock->connect_secret[1] = connect_secret[1];
|
|
sock->connect_secret[2] = connect_secret[2];
|
|
sock->connect_secret[3] = connect_secret[3];
|
|
sock->sec_pid = sec_pid;
|
|
sock->sec_uid = sec_uid;
|
|
sock->sec_gid = sec_gid;
|
|
sock->sec_peer_pid = sec_peer_pid;
|
|
sock->sec_peer_uid = sec_peer_uid;
|
|
sock->sec_peer_gid = sec_peer_gid;
|
|
}
|
|
|
|
void
|
|
fhandler_socket::af_local_set_secret (char *buf)
|
|
{
|
|
if (!entropy_source)
|
|
{
|
|
void *buf = malloc (sizeof (fhandler_dev_random));
|
|
entropy_source = new (buf) fhandler_dev_random ();
|
|
entropy_source->dev () = *urandom_dev;
|
|
}
|
|
if (entropy_source &&
|
|
!entropy_source->open (O_RDONLY))
|
|
{
|
|
delete entropy_source;
|
|
entropy_source = NULL;
|
|
}
|
|
if (entropy_source)
|
|
{
|
|
size_t len = sizeof (connect_secret);
|
|
entropy_source->read (connect_secret, len);
|
|
if (len != sizeof (connect_secret))
|
|
bzero ((char*) connect_secret, sizeof (connect_secret));
|
|
}
|
|
__small_sprintf (buf, "%08x-%08x-%08x-%08x",
|
|
connect_secret [0], connect_secret [1],
|
|
connect_secret [2], connect_secret [3]);
|
|
}
|
|
|
|
void
|
|
fhandler_socket::fixup_before_fork_exec (DWORD win_proc_id)
|
|
{
|
|
if (!WSADuplicateSocketA (get_socket (), win_proc_id, prot_info_ptr))
|
|
debug_printf ("WSADuplicateSocket went fine, sock %p, win_proc_id %d, prot_info_ptr %p",
|
|
get_socket (), win_proc_id, prot_info_ptr);
|
|
else
|
|
{
|
|
debug_printf ("WSADuplicateSocket error, sock %p, win_proc_id %d, prot_info_ptr %p",
|
|
get_socket (), win_proc_id, prot_info_ptr);
|
|
set_winsock_errno ();
|
|
}
|
|
}
|
|
|
|
void
|
|
fhandler_socket::fixup_after_fork (HANDLE parent)
|
|
{
|
|
SOCKET new_sock;
|
|
|
|
debug_printf ("WSASocket begin, dwServiceFlags1=%d",
|
|
prot_info_ptr->dwServiceFlags1);
|
|
|
|
if ((new_sock = WSASocketA (FROM_PROTOCOL_INFO,
|
|
FROM_PROTOCOL_INFO,
|
|
FROM_PROTOCOL_INFO,
|
|
prot_info_ptr, 0, 0)) == INVALID_SOCKET)
|
|
{
|
|
debug_printf ("WSASocket error");
|
|
set_io_handle ((HANDLE)INVALID_SOCKET);
|
|
set_winsock_errno ();
|
|
}
|
|
else
|
|
{
|
|
debug_printf ("WSASocket went fine new_sock %p, old_sock %p", new_sock, get_io_handle ());
|
|
set_io_handle ((HANDLE) new_sock);
|
|
}
|
|
}
|
|
|
|
void
|
|
fhandler_socket::fixup_after_exec ()
|
|
{
|
|
if (!close_on_exec ())
|
|
fixup_after_fork (NULL);
|
|
}
|
|
|
|
int
|
|
fhandler_socket::dup (fhandler_base *child)
|
|
{
|
|
HANDLE nh;
|
|
|
|
debug_printf ("here");
|
|
fhandler_socket *fhs = (fhandler_socket *) child;
|
|
fhs->addr_family = addr_family;
|
|
fhs->set_socket_type (get_socket_type ());
|
|
if (get_addr_family () == AF_LOCAL)
|
|
{
|
|
fhs->set_sun_path (get_sun_path ());
|
|
if (get_socket_type () == SOCK_STREAM)
|
|
{
|
|
fhs->sec_pid = sec_pid;
|
|
fhs->sec_uid = sec_uid;
|
|
fhs->sec_gid = sec_gid;
|
|
fhs->sec_peer_pid = sec_peer_pid;
|
|
fhs->sec_peer_uid = sec_peer_uid;
|
|
fhs->sec_peer_gid = sec_peer_gid;
|
|
}
|
|
}
|
|
fhs->connect_state (connect_state ());
|
|
|
|
/* Since WSADuplicateSocket() fails on NT systems when the process
|
|
is currently impersonating a non-privileged account, we revert
|
|
to the original account before calling WSADuplicateSocket() and
|
|
switch back afterwards as it's also in fork().
|
|
If WSADuplicateSocket() still fails for some reason, we fall back
|
|
to DuplicateHandle(). */
|
|
WSASetLastError (0);
|
|
cygheap->user.deimpersonate ();
|
|
fhs->set_io_handle (get_io_handle ());
|
|
fhs->fixup_before_fork_exec (GetCurrentProcessId ());
|
|
cygheap->user.reimpersonate ();
|
|
if (!WSAGetLastError ())
|
|
{
|
|
fhs->fixup_after_fork (hMainProc);
|
|
if (fhs->get_io_handle() != (HANDLE) INVALID_SOCKET)
|
|
{
|
|
cygheap->fdtab.inc_need_fixup_before ();
|
|
return 0;
|
|
}
|
|
}
|
|
debug_printf ("WSADuplicateSocket failed, trying DuplicateHandle");
|
|
|
|
/* We don't call fhandler_base::dup here since that requires
|
|
having winsock called from fhandler_base and it creates only
|
|
inheritable sockets which is wrong for winsock2. */
|
|
|
|
if (!DuplicateHandle (hMainProc, get_io_handle (), hMainProc, &nh, 0,
|
|
FALSE, DUPLICATE_SAME_ACCESS))
|
|
{
|
|
system_printf ("!DuplicateHandle(%x) failed, %E", get_io_handle ());
|
|
__seterrno ();
|
|
return -1;
|
|
}
|
|
VerifyHandle (nh);
|
|
fhs->set_io_handle (nh);
|
|
cygheap->fdtab.inc_need_fixup_before ();
|
|
return 0;
|
|
}
|
|
|
|
int __stdcall
|
|
fhandler_socket::fstat (struct __stat64 *buf)
|
|
{
|
|
int res;
|
|
if (get_device () == FH_UNIX)
|
|
{
|
|
res = fhandler_base::fstat_fs (buf);
|
|
if (!res)
|
|
{
|
|
buf->st_mode = (buf->st_mode & ~S_IFMT) | S_IFSOCK;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
res = fhandler_base::fstat (buf);
|
|
if (!res)
|
|
{
|
|
buf->st_dev = 0;
|
|
buf->st_ino = (__ino64_t) ((DWORD) get_handle ());
|
|
buf->st_mode = S_IFSOCK | S_IRWXU | S_IRWXG | S_IRWXO;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::fchmod (mode_t mode)
|
|
{
|
|
if (get_device () == FH_UNIX)
|
|
{
|
|
fhandler_disk_file fh (pc);
|
|
fh.get_device () = FH_FS;
|
|
int ret = fh.fchmod (mode);
|
|
SetFileAttributes (pc, GetFileAttributes (pc) | FILE_ATTRIBUTE_SYSTEM);
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::fchown (__uid32_t uid, __gid32_t gid)
|
|
{
|
|
if (get_device () == FH_UNIX)
|
|
{
|
|
fhandler_disk_file fh (pc);
|
|
return fh.fchown (uid, gid);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::facl (int cmd, int nentries, __aclent32_t *aclbufp)
|
|
{
|
|
if (get_device () == FH_UNIX)
|
|
{
|
|
fhandler_disk_file fh (pc);
|
|
return fh.facl (cmd, nentries, aclbufp);
|
|
}
|
|
return fhandler_base::facl (cmd, nentries, aclbufp);
|
|
}
|
|
|
|
int
|
|
fhandler_socket::link (const char *newpath)
|
|
{
|
|
if (get_device () == FH_UNIX)
|
|
{
|
|
fhandler_disk_file fh (pc);
|
|
return fh.link (newpath);
|
|
}
|
|
return fhandler_base::link (newpath);
|
|
}
|
|
|
|
int
|
|
fhandler_socket::bind (const struct sockaddr *name, int namelen)
|
|
{
|
|
int res = -1;
|
|
|
|
if (name->sa_family == AF_LOCAL)
|
|
{
|
|
#define un_addr ((struct sockaddr_un *) name)
|
|
struct sockaddr_in sin;
|
|
int len = sizeof sin;
|
|
|
|
if (strlen (un_addr->sun_path) >= UNIX_PATH_LEN)
|
|
{
|
|
set_errno (ENAMETOOLONG);
|
|
goto out;
|
|
}
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = 0;
|
|
sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
|
|
if (::bind (get_socket (), (sockaddr *) &sin, len))
|
|
{
|
|
syscall_printf ("AF_LOCAL: bind failed %d", get_errno ());
|
|
set_winsock_errno ();
|
|
goto out;
|
|
}
|
|
if (::getsockname (get_socket (), (sockaddr *) &sin, &len))
|
|
{
|
|
syscall_printf ("AF_LOCAL: getsockname failed %d", get_errno ());
|
|
set_winsock_errno ();
|
|
goto out;
|
|
}
|
|
|
|
sin.sin_port = ntohs (sin.sin_port);
|
|
debug_printf ("AF_LOCAL: socket bound to port %u", sin.sin_port);
|
|
|
|
path_conv pc (un_addr->sun_path, PC_SYM_FOLLOW);
|
|
if (pc.error)
|
|
{
|
|
set_errno (pc.error);
|
|
goto out;
|
|
}
|
|
if (pc.exists ())
|
|
{
|
|
set_errno (EADDRINUSE);
|
|
goto out;
|
|
}
|
|
mode_t mode = (S_IRWXU | S_IRWXG | S_IRWXO) & ~cygheap->umask;
|
|
DWORD attr = FILE_ATTRIBUTE_SYSTEM;
|
|
if (!(mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
|
|
attr |= FILE_ATTRIBUTE_READONLY;
|
|
SECURITY_ATTRIBUTES sa = sec_none;
|
|
security_descriptor sd;
|
|
if (allow_ntsec && pc.has_acls ())
|
|
set_security_attribute (mode, &sa, sd);
|
|
HANDLE fh = CreateFile (pc, GENERIC_WRITE, 0, &sa, CREATE_NEW, attr, 0);
|
|
if (fh == INVALID_HANDLE_VALUE)
|
|
{
|
|
if (GetLastError () == ERROR_ALREADY_EXISTS)
|
|
set_errno (EADDRINUSE);
|
|
else
|
|
__seterrno ();
|
|
}
|
|
|
|
char buf[sizeof (SOCKET_COOKIE) + 80];
|
|
__small_sprintf (buf, "%s%u %c ", SOCKET_COOKIE, sin.sin_port, get_socket_type () == SOCK_STREAM ? 's' : get_socket_type () == SOCK_DGRAM ? 'd' : '-');
|
|
af_local_set_secret (strchr (buf, '\0'));
|
|
DWORD blen = strlen (buf) + 1;
|
|
if (!WriteFile (fh, buf, blen, &blen, 0))
|
|
{
|
|
__seterrno ();
|
|
CloseHandle (fh);
|
|
DeleteFile (pc);
|
|
}
|
|
else
|
|
{
|
|
CloseHandle (fh);
|
|
set_sun_path (un_addr->sun_path);
|
|
res = 0;
|
|
}
|
|
#undef un_addr
|
|
}
|
|
else if (::bind (get_socket (), name, namelen))
|
|
set_winsock_errno ();
|
|
else
|
|
res = 0;
|
|
|
|
out:
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::connect (const struct sockaddr *name, int namelen)
|
|
{
|
|
int res = -1;
|
|
bool in_progress = false;
|
|
struct sockaddr_in sin;
|
|
DWORD err;
|
|
int type;
|
|
|
|
if (!get_inet_addr (name, namelen, &sin, &namelen, &type, connect_secret))
|
|
return -1;
|
|
|
|
if (get_addr_family () == AF_LOCAL && get_socket_type () != type)
|
|
{
|
|
WSASetLastError (WSAEPROTOTYPE);
|
|
set_winsock_errno ();
|
|
return -1;
|
|
}
|
|
|
|
if (is_nonblocking ())
|
|
res = ::connect (get_socket (), (struct sockaddr *) &sin, namelen);
|
|
else
|
|
{
|
|
HANDLE evt;
|
|
if (prepare (evt, FD_CONNECT))
|
|
{
|
|
res = ::connect (get_socket (), (struct sockaddr *) &sin, namelen);
|
|
if (res == SOCKET_ERROR
|
|
&& WSAGetLastError () == WSAEWOULDBLOCK)
|
|
res = wait (evt, 0, INFINITE);
|
|
release (evt);
|
|
}
|
|
}
|
|
|
|
if (!res)
|
|
err = 0;
|
|
else
|
|
{
|
|
err = WSAGetLastError ();
|
|
/* Special handling for connect to return the correct error code
|
|
when called on a non-blocking socket. */
|
|
if (is_nonblocking ())
|
|
{
|
|
if (err == WSAEWOULDBLOCK || err == WSAEALREADY)
|
|
in_progress = true;
|
|
|
|
if (err == WSAEWOULDBLOCK)
|
|
WSASetLastError (err = WSAEINPROGRESS);
|
|
}
|
|
if (err == WSAEINVAL)
|
|
WSASetLastError (err = WSAEISCONN);
|
|
set_winsock_errno ();
|
|
}
|
|
|
|
if (get_addr_family () == AF_LOCAL && (!res || in_progress))
|
|
set_sun_path (name->sa_data);
|
|
|
|
if (get_addr_family () == AF_LOCAL && get_socket_type () == SOCK_STREAM)
|
|
{
|
|
af_local_set_cred (); /* Don't move into af_local_connect since
|
|
af_local_connect is called from select,
|
|
possibly running under another identity. */
|
|
if (!res && af_local_connect ())
|
|
{
|
|
set_winsock_errno ();
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (err == WSAEINPROGRESS || err == WSAEALREADY)
|
|
connect_state (connect_pending);
|
|
else if (err)
|
|
connect_state (connect_failed);
|
|
else
|
|
connect_state (connected);
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::listen (int backlog)
|
|
{
|
|
int res = ::listen (get_socket (), backlog);
|
|
if (res)
|
|
set_winsock_errno ();
|
|
else
|
|
{
|
|
if (get_addr_family () == AF_LOCAL && get_socket_type () == SOCK_STREAM)
|
|
af_local_set_cred ();
|
|
connect_state (connected);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::accept (struct sockaddr *peer, int *len)
|
|
{
|
|
int res = -1;
|
|
|
|
/* Allows NULL peer and len parameters. */
|
|
struct sockaddr_in peer_dummy;
|
|
int len_dummy;
|
|
if (!peer)
|
|
peer = (struct sockaddr *) &peer_dummy;
|
|
if (!len)
|
|
{
|
|
len_dummy = sizeof (struct sockaddr_in);
|
|
len = &len_dummy;
|
|
}
|
|
|
|
/* accept on NT fails if len < sizeof (sockaddr_in)
|
|
* some programs set len to
|
|
* sizeof (name.sun_family) + strlen (name.sun_path) for UNIX domain
|
|
*/
|
|
if (len && ((unsigned) *len < sizeof (struct sockaddr_in)))
|
|
*len = sizeof (struct sockaddr_in);
|
|
|
|
if (is_nonblocking ())
|
|
res = ::accept (get_socket (), peer, len);
|
|
else
|
|
{
|
|
HANDLE evt;
|
|
if (prepare (evt, FD_ACCEPT))
|
|
{
|
|
res = wait (evt, 0, INFINITE);
|
|
if (res != -1
|
|
|| (WSAGetLastError () != WSAEINTR
|
|
&& WSAGetLastError () != WSAEFAULT))
|
|
res = ::accept (get_socket (), peer, len);
|
|
release (evt);
|
|
}
|
|
}
|
|
|
|
if (res == (int) INVALID_SOCKET)
|
|
set_winsock_errno ();
|
|
else
|
|
{
|
|
cygheap_fdnew res_fd;
|
|
if (res_fd >= 0 && fdsock (res_fd, &dev (), res))
|
|
{
|
|
fhandler_socket *sock = (fhandler_socket *) res_fd;
|
|
sock->set_addr_family (get_addr_family ());
|
|
sock->set_socket_type (get_socket_type ());
|
|
sock->async_io (async_io ());
|
|
sock->set_nonblocking (is_nonblocking ());
|
|
if (get_addr_family () == AF_LOCAL)
|
|
{
|
|
sock->set_sun_path (get_sun_path ());
|
|
if (get_socket_type () == SOCK_STREAM)
|
|
{
|
|
/* Don't forget to copy credentials from accepting
|
|
socket to accepted socket and start transaction
|
|
on accepted socket! */
|
|
af_local_copy (sock);
|
|
res = sock->af_local_accept ();
|
|
if (res == -1)
|
|
{
|
|
res_fd.release ();
|
|
set_winsock_errno ();
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
sock->connect_state (connected);
|
|
res = res_fd;
|
|
}
|
|
else
|
|
{
|
|
closesocket (res);
|
|
res = -1;
|
|
}
|
|
}
|
|
|
|
out:
|
|
debug_printf ("res %d", res);
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::getsockname (struct sockaddr *name, int *namelen)
|
|
{
|
|
int res = -1;
|
|
|
|
if (get_addr_family () == AF_LOCAL)
|
|
{
|
|
struct sockaddr_un *sun = (struct sockaddr_un *) name;
|
|
memset (sun, 0, *namelen);
|
|
sun->sun_family = AF_LOCAL;
|
|
|
|
if (!get_sun_path ())
|
|
sun->sun_path[0] = '\0';
|
|
else
|
|
/* According to SUSv2 "If the actual length of the address is
|
|
greater than the length of the supplied sockaddr structure, the
|
|
stored address will be truncated." We play it save here so
|
|
that the path always has a trailing 0 even if it's truncated. */
|
|
strncpy (sun->sun_path, get_sun_path (),
|
|
*namelen - sizeof *sun + sizeof sun->sun_path - 1);
|
|
|
|
*namelen = sizeof *sun - sizeof sun->sun_path
|
|
+ strlen (sun->sun_path) + 1;
|
|
res = 0;
|
|
}
|
|
else
|
|
{
|
|
res = ::getsockname (get_socket (), name, namelen);
|
|
if (res)
|
|
set_winsock_errno ();
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::getpeername (struct sockaddr *name, int *namelen)
|
|
{
|
|
int res = ::getpeername (get_socket (), name, namelen);
|
|
if (res)
|
|
set_winsock_errno ();
|
|
|
|
return res;
|
|
}
|
|
|
|
bool
|
|
fhandler_socket::prepare (HANDLE &event, long event_mask)
|
|
{
|
|
WSASetLastError (0);
|
|
closed (false);
|
|
if ((event = WSACreateEvent ()) == WSA_INVALID_EVENT)
|
|
{
|
|
debug_printf ("WSACreateEvent, %E");
|
|
return false;
|
|
}
|
|
if (WSAEventSelect (get_socket (), event, event_mask) == SOCKET_ERROR)
|
|
{
|
|
debug_printf ("WSAEventSelect, %E");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::wait (HANDLE event, int flags, DWORD timeout)
|
|
{
|
|
int ret = SOCKET_ERROR;
|
|
int wsa_err = 0;
|
|
WSAEVENT ev[2] = { event, signal_arrived };
|
|
WSANETWORKEVENTS evts;
|
|
|
|
switch (WSAWaitForMultipleEvents (2, ev, FALSE, timeout, FALSE))
|
|
{
|
|
case WSA_WAIT_TIMEOUT:
|
|
ret = 0;
|
|
break;
|
|
case WSA_WAIT_EVENT_0:
|
|
if (!WSAEnumNetworkEvents (get_socket (), event, &evts))
|
|
{
|
|
if (!evts.lNetworkEvents)
|
|
{
|
|
ret = 0;
|
|
break;
|
|
}
|
|
if (evts.lNetworkEvents & FD_OOB)
|
|
{
|
|
if (evts.iErrorCode[FD_OOB_BIT])
|
|
wsa_err = evts.iErrorCode[FD_OOB_BIT];
|
|
else if (flags & MSG_OOB)
|
|
ret = 0;
|
|
else
|
|
{
|
|
raise (SIGURG);
|
|
WSASetLastError (WSAEINTR);
|
|
break;
|
|
}
|
|
}
|
|
if (evts.lNetworkEvents & FD_ACCEPT)
|
|
{
|
|
if (evts.iErrorCode[FD_ACCEPT_BIT])
|
|
wsa_err = evts.iErrorCode[FD_ACCEPT_BIT];
|
|
else
|
|
ret = 0;
|
|
}
|
|
if (evts.lNetworkEvents & FD_CONNECT)
|
|
{
|
|
if (evts.iErrorCode[FD_CONNECT_BIT])
|
|
wsa_err = evts.iErrorCode[FD_CONNECT_BIT];
|
|
else
|
|
ret = 0;
|
|
}
|
|
else if (evts.lNetworkEvents & FD_READ)
|
|
{
|
|
if (evts.iErrorCode[FD_READ_BIT])
|
|
wsa_err = evts.iErrorCode[FD_READ_BIT];
|
|
else
|
|
ret = 0;
|
|
}
|
|
else if (evts.lNetworkEvents & FD_WRITE)
|
|
{
|
|
if (evts.iErrorCode[FD_WRITE_BIT])
|
|
wsa_err = evts.iErrorCode[FD_WRITE_BIT];
|
|
else
|
|
ret = 0;
|
|
}
|
|
if (evts.lNetworkEvents & FD_CLOSE)
|
|
{
|
|
closed (true);
|
|
if (!wsa_err)
|
|
{
|
|
if (evts.iErrorCode[FD_CLOSE_BIT])
|
|
wsa_err = evts.iErrorCode[FD_CLOSE_BIT];
|
|
else
|
|
ret = 0;
|
|
}
|
|
}
|
|
if (wsa_err)
|
|
WSASetLastError (wsa_err);
|
|
}
|
|
break;
|
|
case WSA_WAIT_EVENT_0 + 1:
|
|
WSASetLastError (WSAEINTR);
|
|
break;
|
|
default:
|
|
WSASetLastError (WSAEFAULT);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
fhandler_socket::release (HANDLE event)
|
|
{
|
|
int last_err = WSAGetLastError ();
|
|
/* KB 168349: NT4 fails if the event parameter is not NULL. */
|
|
WSAEventSelect (get_socket (), NULL, 0);
|
|
WSACloseEvent (event);
|
|
unsigned long non_block = 0;
|
|
if (ioctlsocket (get_socket (), FIONBIO, &non_block))
|
|
debug_printf ("return to blocking failed: %d", WSAGetLastError ());
|
|
else
|
|
WSASetLastError (last_err);
|
|
}
|
|
|
|
int
|
|
fhandler_socket::readv (const struct iovec *const iov, const int iovcnt,
|
|
ssize_t tot)
|
|
{
|
|
struct msghdr msg =
|
|
{
|
|
msg_name: NULL,
|
|
msg_namelen: 0,
|
|
msg_iov: (struct iovec *) iov, // const_cast
|
|
msg_iovlen: iovcnt,
|
|
msg_control: NULL,
|
|
msg_controllen: 0,
|
|
msg_flags: 0
|
|
};
|
|
|
|
return recvmsg (&msg, 0, tot);
|
|
}
|
|
|
|
int
|
|
fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
|
|
struct sockaddr *from, int *fromlen)
|
|
{
|
|
int res = SOCKET_ERROR;
|
|
DWORD ret = 0;
|
|
|
|
WSABUF wsabuf = { len, (char *) ptr };
|
|
|
|
if (is_nonblocking () || closed () || async_io ())
|
|
{
|
|
DWORD lflags = (DWORD) (flags & MSG_WINMASK);
|
|
res = WSARecvFrom (get_socket (), &wsabuf, 1, &ret,
|
|
&lflags, from, fromlen, NULL, NULL);
|
|
}
|
|
else
|
|
{
|
|
HANDLE evt;
|
|
if (prepare (evt, FD_CLOSE | FD_READ | (owner () ? FD_OOB : 0)))
|
|
{
|
|
do
|
|
{
|
|
DWORD lflags = (DWORD) (flags & MSG_WINMASK);
|
|
res = WSARecvFrom (get_socket (), &wsabuf, 1, &ret, &lflags,
|
|
from, fromlen, NULL, NULL);
|
|
}
|
|
while (res == SOCKET_ERROR
|
|
&& WSAGetLastError () == WSAEWOULDBLOCK
|
|
&& !closed ()
|
|
&& !(res = wait (evt, flags)));
|
|
release (evt);
|
|
}
|
|
}
|
|
|
|
if (res == SOCKET_ERROR)
|
|
{
|
|
/* According to SUSv3, errno isn't set in that case and no error
|
|
condition is returned. */
|
|
if (WSAGetLastError () == WSAEMSGSIZE)
|
|
return len;
|
|
|
|
/* ESHUTDOWN isn't defined for recv in SUSv3. Simply EOF is returned
|
|
in this case. */
|
|
if (WSAGetLastError () == WSAESHUTDOWN)
|
|
return 0;
|
|
|
|
set_winsock_errno ();
|
|
}
|
|
else
|
|
res = ret;
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::recvmsg (struct msghdr *msg, int flags, ssize_t tot)
|
|
{
|
|
if (CYGWIN_VERSION_CHECK_FOR_USING_ANCIENT_MSGHDR)
|
|
((struct OLD_msghdr *) msg)->msg_accrightslen = 0;
|
|
else
|
|
{
|
|
msg->msg_controllen = 0;
|
|
msg->msg_flags = 0;
|
|
}
|
|
if (get_addr_family () == AF_LOCAL)
|
|
{
|
|
/* On AF_LOCAL sockets the (fixed-size) name of the shared memory
|
|
area used for descriptor passing is transmitted first.
|
|
If this string is empty, no descriptors are passed and we can
|
|
go ahead recv'ing the normal data blocks. Otherwise start
|
|
special handling for descriptor passing. */
|
|
/*TODO*/
|
|
}
|
|
|
|
struct iovec *const iov = msg->msg_iov;
|
|
const int iovcnt = msg->msg_iovlen;
|
|
|
|
struct sockaddr *from = (struct sockaddr *) msg->msg_name;
|
|
int *fromlen = from ? &msg->msg_namelen : NULL;
|
|
|
|
int res = SOCKET_ERROR;
|
|
|
|
WSABUF wsabuf[iovcnt];
|
|
unsigned long len = 0L;
|
|
|
|
const struct iovec *iovptr = iov + iovcnt;
|
|
WSABUF *wsaptr = wsabuf + iovcnt;
|
|
do
|
|
{
|
|
iovptr -= 1;
|
|
wsaptr -= 1;
|
|
len += wsaptr->len = iovptr->iov_len;
|
|
wsaptr->buf = (char *) iovptr->iov_base;
|
|
}
|
|
while (wsaptr != wsabuf);
|
|
|
|
DWORD ret = 0;
|
|
|
|
if (is_nonblocking () || closed () || async_io ())
|
|
{
|
|
DWORD lflags = (DWORD) (flags & MSG_WINMASK);
|
|
res = WSARecvFrom (get_socket (), wsabuf, iovcnt, &ret,
|
|
&lflags, from, fromlen, NULL, NULL);
|
|
}
|
|
else
|
|
{
|
|
HANDLE evt;
|
|
if (prepare (evt, FD_CLOSE | FD_READ | (owner () ? FD_OOB : 0)))
|
|
{
|
|
do
|
|
{
|
|
DWORD lflags = (DWORD) (flags & MSG_WINMASK);
|
|
res = WSARecvFrom (get_socket (), wsabuf, iovcnt, &ret,
|
|
&lflags, from, fromlen, NULL, NULL);
|
|
}
|
|
while (res == SOCKET_ERROR
|
|
&& WSAGetLastError () == WSAEWOULDBLOCK
|
|
&& !closed ()
|
|
&& !(res = wait (evt, flags)));
|
|
release (evt);
|
|
}
|
|
}
|
|
|
|
if (res == SOCKET_ERROR)
|
|
{
|
|
/* According to SUSv3, errno isn't set in that case and no error
|
|
condition is returned. */
|
|
if (WSAGetLastError () == WSAEMSGSIZE)
|
|
return len;
|
|
|
|
/* ESHUTDOWN isn't defined for recv in SUSv3. Simply EOF is returned
|
|
in this case. */
|
|
if (WSAGetLastError () == WSAESHUTDOWN)
|
|
return 0;
|
|
|
|
set_winsock_errno ();
|
|
}
|
|
else
|
|
res = ret;
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::writev (const struct iovec *const iov, const int iovcnt,
|
|
ssize_t tot)
|
|
{
|
|
struct msghdr msg =
|
|
{
|
|
msg_name: NULL,
|
|
msg_namelen: 0,
|
|
msg_iov: (struct iovec *) iov, // const_cast
|
|
msg_iovlen: iovcnt,
|
|
msg_control: NULL,
|
|
msg_controllen: 0,
|
|
msg_flags: 0
|
|
};
|
|
|
|
return sendmsg (&msg, 0, tot);
|
|
}
|
|
|
|
int
|
|
fhandler_socket::sendto (const void *ptr, size_t len, int flags,
|
|
const struct sockaddr *to, int tolen)
|
|
{
|
|
struct sockaddr_in sin;
|
|
|
|
if (to && !get_inet_addr (to, tolen, &sin, &tolen))
|
|
return SOCKET_ERROR;
|
|
|
|
int res = SOCKET_ERROR;
|
|
DWORD ret = 0;
|
|
|
|
WSABUF wsabuf = { len, (char *) ptr };
|
|
|
|
if (is_nonblocking () || closed () || async_io ())
|
|
res = WSASendTo (get_socket (), &wsabuf, 1, &ret,
|
|
flags & MSG_WINMASK,
|
|
(to ? (const struct sockaddr *) &sin : NULL), tolen,
|
|
NULL, NULL);
|
|
else
|
|
{
|
|
HANDLE evt;
|
|
if (prepare (evt, FD_CLOSE | FD_WRITE | (owner () ? FD_OOB : 0)))
|
|
{
|
|
do
|
|
{
|
|
res = WSASendTo (get_socket (), &wsabuf, 1, &ret,
|
|
flags & MSG_WINMASK,
|
|
(to ? (const struct sockaddr *) &sin : NULL),
|
|
tolen, NULL, NULL);
|
|
}
|
|
while (res == SOCKET_ERROR
|
|
&& WSAGetLastError () == WSAEWOULDBLOCK
|
|
&& !(res = wait (evt, 0))
|
|
&& !closed ());
|
|
release (evt);
|
|
}
|
|
}
|
|
|
|
if (res == SOCKET_ERROR)
|
|
set_winsock_errno ();
|
|
else
|
|
res = ret;
|
|
|
|
/* Special handling for EPIPE and SIGPIPE.
|
|
|
|
EPIPE is generated if the local end has been shut down on a connection
|
|
oriented socket. In this case the process will also receive a SIGPIPE
|
|
unless MSG_NOSIGNAL is set. */
|
|
if (res == SOCKET_ERROR && get_errno () == ESHUTDOWN
|
|
&& get_socket_type () == SOCK_STREAM)
|
|
{
|
|
set_errno (EPIPE);
|
|
if (! (flags & MSG_NOSIGNAL))
|
|
raise (SIGPIPE);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::sendmsg (const struct msghdr *msg, int flags, ssize_t tot)
|
|
{
|
|
if (get_addr_family () == AF_LOCAL)
|
|
{
|
|
/* For AF_LOCAL/AF_UNIX sockets, if descriptors are given, start
|
|
the special handling for descriptor passing. Otherwise just
|
|
transmit an empty string to tell the receiver that no
|
|
descriptor passing is done. */
|
|
/*TODO*/
|
|
}
|
|
|
|
struct iovec *const iov = msg->msg_iov;
|
|
const int iovcnt = msg->msg_iovlen;
|
|
|
|
int res = SOCKET_ERROR;
|
|
|
|
WSABUF wsabuf[iovcnt];
|
|
|
|
const struct iovec *iovptr = iov + iovcnt;
|
|
WSABUF *wsaptr = wsabuf + iovcnt;
|
|
do
|
|
{
|
|
iovptr -= 1;
|
|
wsaptr -= 1;
|
|
wsaptr->len = iovptr->iov_len;
|
|
wsaptr->buf = (char *) iovptr->iov_base;
|
|
}
|
|
while (wsaptr != wsabuf);
|
|
|
|
DWORD ret = 0;
|
|
|
|
if (is_nonblocking () || closed () || async_io ())
|
|
res = WSASendTo (get_socket (), wsabuf, iovcnt, &ret,
|
|
flags & MSG_WINMASK, (struct sockaddr *) msg->msg_name,
|
|
msg->msg_namelen, NULL, NULL);
|
|
else
|
|
{
|
|
HANDLE evt;
|
|
if (prepare (evt, FD_CLOSE | FD_WRITE | (owner () ? FD_OOB : 0)))
|
|
{
|
|
do
|
|
{
|
|
res = WSASendTo (get_socket (), wsabuf, iovcnt,
|
|
&ret, flags & MSG_WINMASK,
|
|
(struct sockaddr *) msg->msg_name,
|
|
msg->msg_namelen, NULL, NULL);
|
|
}
|
|
while (res == SOCKET_ERROR
|
|
&& WSAGetLastError () == WSAEWOULDBLOCK
|
|
&& !(res = wait (evt, 0))
|
|
&& !closed ());
|
|
release (evt);
|
|
}
|
|
}
|
|
|
|
if (res == SOCKET_ERROR)
|
|
set_winsock_errno ();
|
|
else
|
|
res = ret;
|
|
|
|
/* Special handling for EPIPE and SIGPIPE.
|
|
|
|
EPIPE is generated if the local end has been shut down on a connection
|
|
oriented socket. In this case the process will also receive a SIGPIPE
|
|
unless MSG_NOSIGNAL is set. */
|
|
if (res == SOCKET_ERROR && get_errno () == ESHUTDOWN
|
|
&& get_socket_type () == SOCK_STREAM)
|
|
{
|
|
set_errno (EPIPE);
|
|
if (! (flags & MSG_NOSIGNAL))
|
|
raise (SIGPIPE);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::shutdown (int how)
|
|
{
|
|
int res = ::shutdown (get_socket (), how);
|
|
|
|
if (res)
|
|
set_winsock_errno ();
|
|
else
|
|
switch (how)
|
|
{
|
|
case SHUT_RD:
|
|
saw_shutdown_read (true);
|
|
break;
|
|
case SHUT_WR:
|
|
saw_shutdown_write (true);
|
|
break;
|
|
case SHUT_RDWR:
|
|
saw_shutdown_read (true);
|
|
saw_shutdown_write (true);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::close ()
|
|
{
|
|
int res = 0;
|
|
|
|
/* HACK to allow a graceful shutdown even if shutdown() hasn't been
|
|
called by the application. Note that this isn't the ultimate
|
|
solution but it helps in many cases. */
|
|
struct linger linger;
|
|
linger.l_onoff = 1;
|
|
linger.l_linger = 240; /* secs. default 2MSL value according to MSDN. */
|
|
setsockopt (get_socket (), SOL_SOCKET, SO_LINGER,
|
|
(const char *)&linger, sizeof linger);
|
|
|
|
while ((res = closesocket (get_socket ())) != 0)
|
|
{
|
|
if (WSAGetLastError () != WSAEWOULDBLOCK)
|
|
{
|
|
set_winsock_errno ();
|
|
res = -1;
|
|
break;
|
|
}
|
|
if (WaitForSingleObject (signal_arrived, 10) == WAIT_OBJECT_0)
|
|
{
|
|
set_errno (EINTR);
|
|
res = -1;
|
|
break;
|
|
}
|
|
WSASetLastError (0);
|
|
}
|
|
|
|
debug_printf ("%d = fhandler_socket::close()", res);
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::ioctl (unsigned int cmd, void *p)
|
|
{
|
|
extern int get_ifconf (struct ifconf *ifc, int what); /* net.cc */
|
|
int res;
|
|
struct ifconf ifc, *ifcp;
|
|
struct ifreq *ifr, *ifrp;
|
|
|
|
switch (cmd)
|
|
{
|
|
case SIOCGIFCONF:
|
|
ifcp = (struct ifconf *) p;
|
|
if (!ifcp)
|
|
{
|
|
set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
res = get_ifconf (ifcp, cmd);
|
|
if (res)
|
|
debug_printf ("error in get_ifconf");
|
|
break;
|
|
case SIOCGIFFLAGS:
|
|
ifr = (struct ifreq *) p;
|
|
if (ifr == 0)
|
|
{
|
|
set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
ifr->ifr_flags = IFF_NOTRAILERS | IFF_UP | IFF_RUNNING;
|
|
if (!strncmp(ifr->ifr_name, "lo", 2)
|
|
|| ntohl (((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr)
|
|
== INADDR_LOOPBACK)
|
|
ifr->ifr_flags |= IFF_LOOPBACK;
|
|
else
|
|
ifr->ifr_flags |= IFF_BROADCAST;
|
|
res = 0;
|
|
break;
|
|
case SIOCGIFBRDADDR:
|
|
case SIOCGIFNETMASK:
|
|
case SIOCGIFADDR:
|
|
case SIOCGIFHWADDR:
|
|
case SIOCGIFMETRIC:
|
|
case SIOCGIFMTU:
|
|
{
|
|
ifc.ifc_len = 2048;
|
|
ifc.ifc_buf = (char *) alloca (2048);
|
|
|
|
ifr = (struct ifreq *) p;
|
|
if (ifr == 0)
|
|
{
|
|
debug_printf ("ifr == NULL");
|
|
set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
res = get_ifconf (&ifc, cmd);
|
|
if (res)
|
|
{
|
|
debug_printf ("error in get_ifconf");
|
|
break;
|
|
}
|
|
|
|
debug_printf (" name: %s", ifr->ifr_name);
|
|
for (ifrp = ifc.ifc_req;
|
|
(caddr_t) ifrp < ifc.ifc_buf + ifc.ifc_len;
|
|
++ifrp)
|
|
{
|
|
debug_printf ("testname: %s", ifrp->ifr_name);
|
|
if (! strcmp (ifrp->ifr_name, ifr->ifr_name))
|
|
{
|
|
switch (cmd)
|
|
{
|
|
case SIOCGIFADDR:
|
|
ifr->ifr_addr = ifrp->ifr_addr;
|
|
break;
|
|
case SIOCGIFBRDADDR:
|
|
ifr->ifr_broadaddr = ifrp->ifr_broadaddr;
|
|
break;
|
|
case SIOCGIFNETMASK:
|
|
ifr->ifr_netmask = ifrp->ifr_netmask;
|
|
break;
|
|
case SIOCGIFHWADDR:
|
|
ifr->ifr_hwaddr = ifrp->ifr_hwaddr;
|
|
break;
|
|
case SIOCGIFMETRIC:
|
|
ifr->ifr_metric = ifrp->ifr_metric;
|
|
break;
|
|
case SIOCGIFMTU:
|
|
ifr->ifr_mtu = ifrp->ifr_mtu;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ((caddr_t) ifrp >= ifc.ifc_buf + ifc.ifc_len)
|
|
{
|
|
set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
break;
|
|
}
|
|
case FIOASYNC:
|
|
res = WSAAsyncSelect (get_socket (), winmsg, WM_ASYNCIO,
|
|
*(int *) p ? ASYNC_MASK : 0);
|
|
syscall_printf ("Async I/O on socket %s",
|
|
*(int *) p ? "started" : "cancelled");
|
|
async_io (*(int *) p != 0);
|
|
break;
|
|
case FIONREAD:
|
|
res = ioctlsocket (get_socket (), FIONREAD, (unsigned long *) p);
|
|
if (res == SOCKET_ERROR)
|
|
set_winsock_errno ();
|
|
break;
|
|
default:
|
|
/* We must cancel WSAAsyncSelect (if any) before setting socket to
|
|
* blocking mode
|
|
*/
|
|
if (cmd == FIONBIO && async_io () && *(int *) p == 0)
|
|
WSAAsyncSelect (get_socket (), winmsg, 0, 0);
|
|
res = ioctlsocket (get_socket (), cmd, (unsigned long *) p);
|
|
if (res == SOCKET_ERROR)
|
|
set_winsock_errno ();
|
|
if (cmd == FIONBIO)
|
|
{
|
|
syscall_printf ("socket is now %sblocking",
|
|
*(int *) p ? "non" : "");
|
|
/* Start AsyncSelect if async socket unblocked */
|
|
if (*(int *) p && async_io ())
|
|
WSAAsyncSelect (get_socket (), winmsg, WM_ASYNCIO, ASYNC_MASK);
|
|
|
|
set_nonblocking (*(int *) p);
|
|
}
|
|
break;
|
|
}
|
|
syscall_printf ("%d = ioctl_socket (%x, %x)", res, cmd, p);
|
|
return res;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::fcntl (int cmd, void *arg)
|
|
{
|
|
int res = 0;
|
|
int request, current;
|
|
|
|
switch (cmd)
|
|
{
|
|
case F_SETOWN:
|
|
{
|
|
/* Urgh! Bad hack! */
|
|
pid_t pid = (pid_t) arg;
|
|
owner (pid == getpid ());
|
|
debug_printf ("owner set to %d", owner ());
|
|
}
|
|
break;
|
|
case F_SETFL:
|
|
{
|
|
/* Carefully test for the O_NONBLOCK or deprecated OLD_O_NDELAY flag.
|
|
Set only the flag that has been passed in. If both are set, just
|
|
record O_NONBLOCK. */
|
|
int new_flags = (int) arg & O_NONBLOCK_MASK;
|
|
if ((new_flags & OLD_O_NDELAY) && (new_flags & O_NONBLOCK))
|
|
new_flags = O_NONBLOCK;
|
|
current = get_flags () & O_NONBLOCK_MASK;
|
|
request = new_flags ? 1 : 0;
|
|
if (!!current != !!new_flags && (res = ioctl (FIONBIO, &request)))
|
|
break;
|
|
set_flags ((get_flags () & ~O_NONBLOCK_MASK) | new_flags);
|
|
break;
|
|
}
|
|
default:
|
|
res = fhandler_base::fcntl (cmd, arg);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
void
|
|
fhandler_socket::set_close_on_exec (bool val)
|
|
{
|
|
close_on_exec (val);
|
|
debug_printf ("set close_on_exec for %s to %d", get_name (), val);
|
|
}
|
|
|
|
void
|
|
fhandler_socket::set_sun_path (const char *path)
|
|
{
|
|
sun_path = path ? cstrdup (path) : NULL;
|
|
}
|
|
|
|
int
|
|
fhandler_socket::getpeereid (pid_t *pid, __uid32_t *euid, __gid32_t *egid)
|
|
{
|
|
if (get_addr_family () != AF_LOCAL || get_socket_type () != SOCK_STREAM)
|
|
{
|
|
set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
if (connect_state () != connected)
|
|
{
|
|
set_errno (ENOTCONN);
|
|
return -1;
|
|
}
|
|
if (sec_peer_pid == (pid_t) 0)
|
|
{
|
|
set_errno (ENOTCONN); /* Usually when calling getpeereid on
|
|
accepting (instead of accepted) socket. */
|
|
return -1;
|
|
}
|
|
|
|
myfault efault;
|
|
if (efault.faulted (EFAULT))
|
|
return -1;
|
|
if (pid)
|
|
*pid = sec_peer_pid;
|
|
if (euid)
|
|
*euid = sec_peer_uid;
|
|
if (egid)
|
|
*egid = sec_peer_gid;
|
|
return 0;
|
|
}
|