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Sweden-Number/server/sock.c

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/*
* Server-side socket management
*
* Copyright (C) 1999 Marcus Meissner, Ove Kåven
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* FIXME: we use read|write access in all cases. Shouldn't we depend that
* on the access of the current handle?
*/
#include "config.h"
#include <assert.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_POLL_H
# include <poll.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#include <time.h>
#include <unistd.h>
#include <limits.h>
#ifdef HAVE_LINUX_RTNETLINK_H
# include <linux/rtnetlink.h>
#endif
#ifdef HAVE_NETIPX_IPX_H
# include <netipx/ipx.h>
#elif defined(HAVE_LINUX_IPX_H)
# ifdef HAVE_ASM_TYPES_H
# include <asm/types.h>
# endif
# ifdef HAVE_LINUX_TYPES_H
# include <linux/types.h>
# endif
# include <linux/ipx.h>
#endif
#if defined(SOL_IPX) || defined(SO_DEFAULT_HEADERS)
# define HAS_IPX
#endif
#ifdef HAVE_LINUX_IRDA_H
# ifdef HAVE_LINUX_TYPES_H
# include <linux/types.h>
# endif
# include <linux/irda.h>
# define HAS_IRDA
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "winerror.h"
#define USE_WS_PREFIX
#include "winsock2.h"
#include "ws2tcpip.h"
#include "wsipx.h"
#include "af_irda.h"
#include "wine/afd.h"
#include "process.h"
#include "file.h"
#include "handle.h"
#include "thread.h"
#include "request.h"
#include "user.h"
struct accept_req
{
struct list entry;
struct async *async;
struct iosb *iosb;
struct sock *sock, *acceptsock;
int accepted;
unsigned int recv_len, local_len;
};
struct sock
{
struct object obj; /* object header */
struct fd *fd; /* socket file descriptor */
unsigned int state; /* status bits */
unsigned int mask; /* event mask */
/* pending FD_* events which have not yet been reported to the application */
unsigned int pending_events;
/* FD_* events which have already been reported and should not be selected
* for again until reset by a relevant call.
*
* For example, if FD_READ is set here and not in pending_events, it has
* already been reported and consumed, and we should not report it again,
* even if POLLIN is signaled, until it is reset by e.g recv().
*
* If an event has been signaled and not consumed yet, it will be set in
* both pending_events and reported_events (as we should only ever report
* any event once until it is reset.) */
unsigned int reported_events;
unsigned int flags; /* socket flags */
int polling; /* is socket being polled? */
unsigned short proto; /* socket protocol */
unsigned short type; /* socket type */
unsigned short family; /* socket family */
struct event *event; /* event object */
user_handle_t window; /* window to send the message to */
unsigned int message; /* message to send */
obj_handle_t wparam; /* message wparam (socket handle) */
unsigned int errors[FD_MAX_EVENTS]; /* event errors */
timeout_t connect_time;/* time the socket was connected */
struct sock *deferred; /* socket that waits for a deferred accept */
struct async_queue read_q; /* queue for asynchronous reads */
struct async_queue write_q; /* queue for asynchronous writes */
struct async_queue ifchange_q; /* queue for interface change notifications */
struct async_queue accept_q; /* queue for asynchronous accepts */
struct object *ifchange_obj; /* the interface change notification object */
struct list ifchange_entry; /* entry in ifchange notification list */
struct list accept_list; /* list of pending accept requests */
struct accept_req *accept_recv_req; /* pending accept-into request which will recv on this socket */
};
static void sock_dump( struct object *obj, int verbose );
static struct fd *sock_get_fd( struct object *obj );
static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
static void sock_destroy( struct object *obj );
static struct object *sock_get_ifchange( struct sock *sock );
static void sock_release_ifchange( struct sock *sock );
static int sock_get_poll_events( struct fd *fd );
static void sock_poll_event( struct fd *fd, int event );
static enum server_fd_type sock_get_fd_type( struct fd *fd );
static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
static void sock_queue_async( struct fd *fd, struct async *async, int type, int count );
static void sock_reselect_async( struct fd *fd, struct async_queue *queue );
static int accept_into_socket( struct sock *sock, struct sock *acceptsock );
static struct sock *accept_socket( struct sock *sock );
static int sock_get_ntstatus( int err );
static unsigned int sock_get_error( int err );
static const struct object_ops sock_ops =
{
sizeof(struct sock), /* size */
&file_type, /* type */
sock_dump, /* dump */
add_queue, /* add_queue */
remove_queue, /* remove_queue */
default_fd_signaled, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
sock_get_fd, /* get_fd */
default_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
no_get_full_name, /* get_full_name */
no_lookup_name, /* lookup_name */
no_link_name, /* link_name */
NULL, /* unlink_name */
no_open_file, /* open_file */
no_kernel_obj_list, /* get_kernel_obj_list */
sock_close_handle, /* close_handle */
sock_destroy /* destroy */
};
static const struct fd_ops sock_fd_ops =
{
sock_get_poll_events, /* get_poll_events */
sock_poll_event, /* poll_event */
sock_get_fd_type, /* get_fd_type */
no_fd_read, /* read */
no_fd_write, /* write */
no_fd_flush, /* flush */
default_fd_get_file_info, /* get_file_info */
no_fd_get_volume_info, /* get_volume_info */
sock_ioctl, /* ioctl */
sock_queue_async, /* queue_async */
sock_reselect_async /* reselect_async */
};
union unix_sockaddr
{
struct sockaddr addr;
struct sockaddr_in in;
struct sockaddr_in6 in6;
#ifdef HAS_IPX
struct sockaddr_ipx ipx;
#endif
#ifdef HAS_IRDA
struct sockaddr_irda irda;
#endif
};
static int sockaddr_from_unix( const union unix_sockaddr *uaddr, struct WS_sockaddr *wsaddr, socklen_t wsaddrlen )
{
memset( wsaddr, 0, wsaddrlen );
switch (uaddr->addr.sa_family)
{
case AF_INET:
{
struct WS_sockaddr_in win = {0};
if (wsaddrlen < sizeof(win)) return -1;
win.sin_family = WS_AF_INET;
win.sin_port = uaddr->in.sin_port;
memcpy( &win.sin_addr, &uaddr->in.sin_addr, sizeof(win.sin_addr) );
memcpy( wsaddr, &win, sizeof(win) );
return sizeof(win);
}
case AF_INET6:
{
struct WS_sockaddr_in6 win = {0};
if (wsaddrlen < sizeof(struct WS_sockaddr_in6_old)) return -1;
win.sin6_family = WS_AF_INET6;
win.sin6_port = uaddr->in6.sin6_port;
win.sin6_flowinfo = uaddr->in6.sin6_flowinfo;
memcpy( &win.sin6_addr, &uaddr->in6.sin6_addr, sizeof(win.sin6_addr) );
#ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
win.sin6_scope_id = uaddr->in6.sin6_scope_id;
#endif
if (wsaddrlen >= sizeof(struct WS_sockaddr_in6))
{
memcpy( wsaddr, &win, sizeof(struct WS_sockaddr_in6) );
return sizeof(struct WS_sockaddr_in6);
}
memcpy( wsaddr, &win, sizeof(struct WS_sockaddr_in6_old) );
return sizeof(struct WS_sockaddr_in6_old);
}
#ifdef HAS_IPX
case AF_IPX:
{
struct WS_sockaddr_ipx win = {0};
if (wsaddrlen < sizeof(win)) return -1;
win.sa_family = WS_AF_IPX;
memcpy( win.sa_netnum, &uaddr->ipx.sipx_network, sizeof(win.sa_netnum) );
memcpy( win.sa_nodenum, &uaddr->ipx.sipx_node, sizeof(win.sa_nodenum) );
win.sa_socket = uaddr->ipx.sipx_port;
memcpy( wsaddr, &win, sizeof(win) );
return sizeof(win);
}
#endif
#ifdef HAS_IRDA
case AF_IRDA:
{
SOCKADDR_IRDA win;
if (wsaddrlen < sizeof(win)) return -1;
win.irdaAddressFamily = WS_AF_IRDA;
memcpy( win.irdaDeviceID, &uaddr->irda.sir_addr, sizeof(win.irdaDeviceID) );
if (uaddr->irda.sir_lsap_sel != LSAP_ANY)
snprintf( win.irdaServiceName, sizeof(win.irdaServiceName), "LSAP-SEL%u", uaddr->irda.sir_lsap_sel );
else
memcpy( win.irdaServiceName, uaddr->irda.sir_name, sizeof(win.irdaServiceName) );
memcpy( wsaddr, &win, sizeof(win) );
return sizeof(win);
}
#endif
case AF_UNSPEC:
return 0;
default:
return -1;
}
}
/* Permutation of 0..FD_MAX_EVENTS - 1 representing the order in which
* we post messages if there are multiple events. Used to send
* messages. The problem is if there is both a FD_CONNECT event and,
* say, an FD_READ event available on the same socket, we want to
* notify the app of the connect event first. Otherwise it may
* discard the read event because it thinks it hasn't connected yet.
*/
static const int event_bitorder[FD_MAX_EVENTS] =
{
FD_CONNECT_BIT,
FD_ACCEPT_BIT,
FD_OOB_BIT,
FD_WRITE_BIT,
FD_READ_BIT,
FD_CLOSE_BIT,
6, 7, 8, 9 /* leftovers */
};
/* Flags that make sense only for SOCK_STREAM sockets */
#define STREAM_FLAG_MASK ((unsigned int) (FD_CONNECT | FD_ACCEPT | FD_WINE_LISTENING | FD_WINE_CONNECTED))
typedef enum {
SOCK_SHUTDOWN_ERROR = -1,
SOCK_SHUTDOWN_EOF = 0,
SOCK_SHUTDOWN_POLLHUP = 1
} sock_shutdown_t;
static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
static sock_shutdown_t sock_check_pollhup(void)
{
sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
int fd[2], n;
struct pollfd pfd;
char dummy;
if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) return ret;
if ( shutdown( fd[0], 1 ) ) goto out;
pfd.fd = fd[1];
pfd.events = POLLIN;
pfd.revents = 0;
/* Solaris' poll() sometimes returns nothing if given a 0ms timeout here */
n = poll( &pfd, 1, 1 );
if ( n != 1 ) goto out; /* error or timeout */
if ( pfd.revents & POLLHUP )
ret = SOCK_SHUTDOWN_POLLHUP;
else if ( pfd.revents & POLLIN &&
read( fd[1], &dummy, 1 ) == 0 )
ret = SOCK_SHUTDOWN_EOF;
out:
close( fd[0] );
close( fd[1] );
return ret;
}
void sock_init(void)
{
sock_shutdown_type = sock_check_pollhup();
switch ( sock_shutdown_type )
{
case SOCK_SHUTDOWN_EOF:
if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
break;
case SOCK_SHUTDOWN_POLLHUP:
if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
break;
default:
fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
sock_shutdown_type = SOCK_SHUTDOWN_EOF;
}
}
static int sock_reselect( struct sock *sock )
{
int ev = sock_get_poll_events( sock->fd );
if (debug_level)
fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
if (!sock->polling) /* FIXME: should find a better way to do this */
{
/* previously unconnected socket, is this reselect supposed to connect it? */
if (!(sock->state & ~FD_WINE_NONBLOCKING)) return 0;
/* ok, it is, attach it to the wineserver's main poll loop */
sock->polling = 1;
allow_fd_caching( sock->fd );
}
/* update condition mask */
set_fd_events( sock->fd, ev );
return ev;
}
/* wake anybody waiting on the socket event or send the associated message */
static void sock_wake_up( struct sock *sock )
{
unsigned int events = sock->pending_events & sock->mask;
int i;
if (sock->event)
{
if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
if (events)
set_event( sock->event );
}
if (sock->window)
{
if (debug_level) fprintf(stderr, "signalling events %x win %08x\n", events, sock->window );
for (i = 0; i < FD_MAX_EVENTS; i++)
{
int event = event_bitorder[i];
if (events & (1 << event))
{
lparam_t lparam = (1 << event) | (sock->errors[event] << 16);
post_message( sock->window, sock->message, sock->wparam, lparam );
}
}
sock->pending_events = 0;
sock_reselect( sock );
}
}
static inline int sock_error( struct fd *fd )
{
unsigned int optval = 0;
socklen_t optlen = sizeof(optval);
getsockopt( get_unix_fd(fd), SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
return optval;
}
static void free_accept_req( void *private )
{
struct accept_req *req = private;
list_remove( &req->entry );
if (req->acceptsock)
{
req->acceptsock->accept_recv_req = NULL;
release_object( req->acceptsock );
}
release_object( req->async );
release_object( req->iosb );
release_object( req->sock );
free( req );
}
static void fill_accept_output( struct accept_req *req )
{
struct iosb *iosb = req->iosb;
union unix_sockaddr unix_addr;
struct WS_sockaddr *win_addr;
unsigned int remote_len;
socklen_t unix_len;
int fd, size = 0;
char *out_data;
int win_len;
if (!(out_data = mem_alloc( iosb->out_size ))) return;
fd = get_unix_fd( req->acceptsock->fd );
if (req->recv_len && (size = recv( fd, out_data, req->recv_len, 0 )) < 0)
{
if (!req->accepted && errno == EWOULDBLOCK)
{
req->accepted = 1;
sock_reselect( req->acceptsock );
set_error( STATUS_PENDING );
return;
}
set_error( sock_get_ntstatus( errno ) );
free( out_data );
return;
}
if (req->local_len)
{
if (req->local_len < sizeof(int))
{
set_error( STATUS_BUFFER_TOO_SMALL );
free( out_data );
return;
}
unix_len = sizeof(unix_addr);
win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + sizeof(int));
if (getsockname( fd, &unix_addr.addr, &unix_len ) < 0 ||
(win_len = sockaddr_from_unix( &unix_addr, win_addr, req->local_len - sizeof(int) )) < 0)
{
set_error( sock_get_ntstatus( errno ) );
free( out_data );
return;
}
memcpy( out_data + req->recv_len, &win_len, sizeof(int) );
}
unix_len = sizeof(unix_addr);
win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + req->local_len + sizeof(int));
remote_len = iosb->out_size - req->recv_len - req->local_len;
if (getpeername( fd, &unix_addr.addr, &unix_len ) < 0 ||
(win_len = sockaddr_from_unix( &unix_addr, win_addr, remote_len - sizeof(int) )) < 0)
{
set_error( sock_get_ntstatus( errno ) );
free( out_data );
return;
}
memcpy( out_data + req->recv_len + req->local_len, &win_len, sizeof(int) );
iosb->status = STATUS_SUCCESS;
iosb->result = size;
iosb->out_data = out_data;
set_error( STATUS_ALERTED );
}
static void complete_async_accept( struct sock *sock, struct accept_req *req )
{
struct sock *acceptsock = req->acceptsock;
struct async *async = req->async;
if (debug_level) fprintf( stderr, "completing accept request for socket %p\n", sock );
if (acceptsock)
{
if (!accept_into_socket( sock, acceptsock )) return;
fill_accept_output( req );
}
else
{
struct iosb *iosb = req->iosb;
obj_handle_t handle;
if (!(acceptsock = accept_socket( sock ))) return;
handle = alloc_handle_no_access_check( async_get_thread( async )->process, &acceptsock->obj,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
acceptsock->wparam = handle;
release_object( acceptsock );
if (!handle) return;
if (!(iosb->out_data = malloc( sizeof(handle) ))) return;
iosb->status = STATUS_SUCCESS;
iosb->out_size = sizeof(handle);
memcpy( iosb->out_data, &handle, sizeof(handle) );
set_error( STATUS_ALERTED );
}
}
static void complete_async_accept_recv( struct accept_req *req )
{
if (debug_level) fprintf( stderr, "completing accept recv request for socket %p\n", req->acceptsock );
assert( req->recv_len );
fill_accept_output( req );
}
static int sock_dispatch_asyncs( struct sock *sock, int event, int error )
{
if (event & (POLLIN | POLLPRI))
{
struct accept_req *req;
LIST_FOR_EACH_ENTRY( req, &sock->accept_list, struct accept_req, entry )
{
if (req->iosb->status == STATUS_PENDING && !req->accepted)
{
complete_async_accept( sock, req );
if (get_error() != STATUS_PENDING)
async_terminate( req->async, get_error() );
break;
}
}
if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
{
complete_async_accept_recv( sock->accept_recv_req );
if (get_error() != STATUS_PENDING)
async_terminate( sock->accept_recv_req->async, get_error() );
}
}
if (is_fd_overlapped( sock->fd ))
{
if (event & (POLLIN|POLLPRI) && async_waiting( &sock->read_q ))
{
if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
async_wake_up( &sock->read_q, STATUS_ALERTED );
event &= ~(POLLIN|POLLPRI);
}
if (event & POLLOUT && async_waiting( &sock->write_q ))
{
if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
async_wake_up( &sock->write_q, STATUS_ALERTED );
event &= ~POLLOUT;
}
}
if (event & (POLLERR | POLLHUP))
{
int status = sock_get_ntstatus( error );
struct accept_req *req, *next;
if (!(sock->state & FD_READ))
async_wake_up( &sock->read_q, status );
if (!(sock->state & FD_WRITE))
async_wake_up( &sock->write_q, status );
LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry )
{
if (req->iosb->status == STATUS_PENDING)
async_terminate( req->async, status );
}
if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
async_terminate( sock->accept_recv_req->async, status );
}
return event;
}
static void post_socket_event( struct sock *sock, unsigned int event_bit, unsigned int error )
{
unsigned int event = (1 << event_bit);
if (!(sock->reported_events & event))
{
sock->pending_events |= event;
sock->reported_events |= event;
sock->errors[event_bit] = error;
}
}
static void sock_dispatch_events( struct sock *sock, int prevstate, int event, int error )
{
if (prevstate & FD_CONNECT)
{
post_socket_event( sock, FD_CONNECT_BIT, sock_get_error( error ) );
goto end;
}
if (prevstate & FD_WINE_LISTENING)
{
post_socket_event( sock, FD_ACCEPT_BIT, sock_get_error( error ) );
goto end;
}
if (event & POLLIN)
post_socket_event( sock, FD_READ_BIT, 0 );
if (event & POLLOUT)
post_socket_event( sock, FD_WRITE_BIT, 0 );
if (event & POLLPRI)
post_socket_event( sock, FD_OOB_BIT, 0 );
if (event & (POLLERR|POLLHUP))
post_socket_event( sock, FD_CLOSE_BIT, sock_get_error( error ) );
end:
sock_wake_up( sock );
}
static void sock_poll_event( struct fd *fd, int event )
{
struct sock *sock = get_fd_user( fd );
int hangup_seen = 0;
int prevstate = sock->state;
int error = 0;
assert( sock->obj.ops == &sock_ops );
if (debug_level)
fprintf(stderr, "socket %p select event: %x\n", sock, event);
/* we may change event later, remove from loop here */
if (event & (POLLERR|POLLHUP)) set_fd_events( sock->fd, -1 );
if (sock->state & FD_CONNECT)
{
if (event & (POLLERR|POLLHUP))
{
/* we didn't get connected? */
sock->state &= ~FD_CONNECT;
event &= ~POLLOUT;
error = sock_error( fd );
}
else if (event & POLLOUT)
{
/* we got connected */
sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
sock->state &= ~FD_CONNECT;
sock->connect_time = current_time;
}
}
else if (sock->state & FD_WINE_LISTENING)
{
/* listening */
if (event & (POLLERR|POLLHUP))
error = sock_error( fd );
}
else
{
/* normal data flow */
if (sock->type == WS_SOCK_STREAM && (event & POLLIN))
{
char dummy;
int nr;
/* Linux 2.4 doesn't report POLLHUP if only one side of the socket
* has been closed, so we need to check for it explicitly here */
nr = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
if ( nr == 0 )
{
hangup_seen = 1;
event &= ~POLLIN;
}
else if ( nr < 0 )
{
event &= ~POLLIN;
/* EAGAIN can happen if an async recv() falls between the server's poll()
call and the invocation of this routine */
if ( errno != EAGAIN )
{
error = errno;
event |= POLLERR;
if ( debug_level )
fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
}
}
}
if ( (hangup_seen || event & (POLLHUP|POLLERR)) && (sock->state & (FD_READ|FD_WRITE)) )
{
error = error ? error : sock_error( fd );
if ( (event & POLLERR) || ( sock_shutdown_type == SOCK_SHUTDOWN_EOF && (event & POLLHUP) ))
sock->state &= ~FD_WRITE;
sock->state &= ~FD_READ;
if (debug_level)
fprintf(stderr, "socket %p aborted by error %d, event: %x\n", sock, error, event);
}
if (hangup_seen)
event |= POLLHUP;
}
event = sock_dispatch_asyncs( sock, event, error );
sock_dispatch_events( sock, prevstate, event, error );
sock_reselect( sock );
}
static void sock_dump( struct object *obj, int verbose )
{
struct sock *sock = (struct sock *)obj;
assert( obj->ops == &sock_ops );
fprintf( stderr, "Socket fd=%p, state=%x, mask=%x, pending=%x, reported=%x\n",
sock->fd, sock->state,
sock->mask, sock->pending_events, sock->reported_events );
}
static int sock_get_poll_events( struct fd *fd )
{
struct sock *sock = get_fd_user( fd );
unsigned int mask = sock->mask & ~sock->reported_events;
unsigned int smask = sock->state & mask;
int ev = 0;
assert( sock->obj.ops == &sock_ops );
if (sock->state & FD_CONNECT)
/* connecting, wait for writable */
return POLLOUT;
if (!list_empty( &sock->accept_list ) || sock->accept_recv_req )
{
ev |= POLLIN | POLLPRI;
}
else if (async_queued( &sock->read_q ))
{
if (async_waiting( &sock->read_q )) ev |= POLLIN | POLLPRI;
}
else if (smask & FD_READ || (sock->state & FD_WINE_LISTENING && mask & FD_ACCEPT))
ev |= POLLIN | POLLPRI;
/* We use POLLIN with 0 bytes recv() as FD_CLOSE indication for stream sockets. */
else if (sock->type == WS_SOCK_STREAM && (mask & FD_CLOSE) && !(sock->reported_events & FD_READ))
ev |= POLLIN;
if (async_queued( &sock->write_q ))
{
if (async_waiting( &sock->write_q )) ev |= POLLOUT;
}
else if (smask & FD_WRITE)
ev |= POLLOUT;
return ev;
}
static enum server_fd_type sock_get_fd_type( struct fd *fd )
{
return FD_TYPE_SOCKET;
}
static void sock_queue_async( struct fd *fd, struct async *async, int type, int count )
{
struct sock *sock = get_fd_user( fd );
struct async_queue *queue;
assert( sock->obj.ops == &sock_ops );
switch (type)
{
case ASYNC_TYPE_READ:
queue = &sock->read_q;
break;
case ASYNC_TYPE_WRITE:
queue = &sock->write_q;
break;
default:
set_error( STATUS_INVALID_PARAMETER );
return;
}
if ( ( !( sock->state & (FD_READ|FD_CONNECT|FD_WINE_LISTENING) ) && type == ASYNC_TYPE_READ ) ||
( !( sock->state & (FD_WRITE|FD_CONNECT) ) && type == ASYNC_TYPE_WRITE ) )
{
set_error( STATUS_PIPE_DISCONNECTED );
return;
}
queue_async( queue, async );
sock_reselect( sock );
set_error( STATUS_PENDING );
}
static void sock_reselect_async( struct fd *fd, struct async_queue *queue )
{
struct sock *sock = get_fd_user( fd );
/* Don't reselect the ifchange queue; we always ask for POLLIN.
* Don't reselect an uninitialized socket; we can't call set_fd_events() on
* a pseudo-fd. */
if (queue != &sock->ifchange_q && sock->type)
sock_reselect( sock );
}
static struct fd *sock_get_fd( struct object *obj )
{
struct sock *sock = (struct sock *)obj;
return (struct fd *)grab_object( sock->fd );
}
static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
{
struct sock *sock = (struct sock *)obj;
struct accept_req *req, *next;
if (sock->obj.handle_count == 1) /* last handle */
{
if (sock->accept_recv_req)
async_terminate( sock->accept_recv_req->async, STATUS_CANCELLED );
LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry )
async_terminate( req->async, STATUS_CANCELLED );
}
return 1;
}
static void sock_destroy( struct object *obj )
{
struct sock *sock = (struct sock *)obj;
assert( obj->ops == &sock_ops );
/* FIXME: special socket shutdown stuff? */
if ( sock->deferred )
release_object( sock->deferred );
async_wake_up( &sock->ifchange_q, STATUS_CANCELLED );
sock_release_ifchange( sock );
free_async_queue( &sock->read_q );
free_async_queue( &sock->write_q );
free_async_queue( &sock->ifchange_q );
free_async_queue( &sock->accept_q );
if (sock->event) release_object( sock->event );
if (sock->fd)
{
/* shut the socket down to force pending poll() calls in the client to return */
shutdown( get_unix_fd(sock->fd), SHUT_RDWR );
release_object( sock->fd );
}
}
static struct sock *create_socket(void)
{
struct sock *sock;
if (!(sock = alloc_object( &sock_ops ))) return NULL;
sock->fd = NULL;
sock->state = 0;
sock->mask = 0;
sock->pending_events = 0;
sock->reported_events = 0;
sock->polling = 0;
sock->flags = 0;
sock->proto = 0;
sock->type = 0;
sock->family = 0;
sock->event = NULL;
sock->window = 0;
sock->message = 0;
sock->wparam = 0;
sock->connect_time = 0;
sock->deferred = NULL;
sock->ifchange_obj = NULL;
sock->accept_recv_req = NULL;
init_async_queue( &sock->read_q );
init_async_queue( &sock->write_q );
init_async_queue( &sock->ifchange_q );
init_async_queue( &sock->accept_q );
memset( sock->errors, 0, sizeof(sock->errors) );
list_init( &sock->accept_list );
return sock;
}
static int get_unix_family( int family )
{
switch (family)
{
case WS_AF_INET: return AF_INET;
case WS_AF_INET6: return AF_INET6;
#ifdef HAS_IPX
case WS_AF_IPX: return AF_IPX;
#endif
#ifdef AF_IRDA
case WS_AF_IRDA: return AF_IRDA;
#endif
case WS_AF_UNSPEC: return AF_UNSPEC;
default: return -1;
}
}
static int get_unix_type( int type )
{
switch (type)
{
case WS_SOCK_DGRAM: return SOCK_DGRAM;
case WS_SOCK_RAW: return SOCK_RAW;
case WS_SOCK_STREAM: return SOCK_STREAM;
default: return -1;
}
}
static int get_unix_protocol( int protocol )
{
if (protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
return protocol;
switch (protocol)
{
case WS_IPPROTO_ICMP: return IPPROTO_ICMP;
case WS_IPPROTO_IGMP: return IPPROTO_IGMP;
case WS_IPPROTO_IP: return IPPROTO_IP;
case WS_IPPROTO_IPV4: return IPPROTO_IPIP;
case WS_IPPROTO_IPV6: return IPPROTO_IPV6;
case WS_IPPROTO_RAW: return IPPROTO_RAW;
case WS_IPPROTO_TCP: return IPPROTO_TCP;
case WS_IPPROTO_UDP: return IPPROTO_UDP;
default: return -1;
}
}
static void set_dont_fragment( int fd, int level, int value )
{
int optname;
if (level == IPPROTO_IP)
{
#ifdef IP_DONTFRAG
optname = IP_DONTFRAG;
#elif defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) && defined(IP_PMTUDISC_DONT)
optname = IP_MTU_DISCOVER;
value = value ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
#else
return;
#endif
}
else
{
#ifdef IPV6_DONTFRAG
optname = IPV6_DONTFRAG;
#elif defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) && defined(IPV6_PMTUDISC_DONT)
optname = IPV6_MTU_DISCOVER;
value = value ? IPV6_PMTUDISC_DO : IPV6_PMTUDISC_DONT;
#else
return;
#endif
}
setsockopt( fd, level, optname, &value, sizeof(value) );
}
static int init_socket( struct sock *sock, int family, int type, int protocol, unsigned int flags )
{
unsigned int options = 0;
int sockfd, unix_type, unix_family, unix_protocol;
unix_family = get_unix_family( family );
unix_type = get_unix_type( type );
unix_protocol = get_unix_protocol( protocol );
if (unix_protocol < 0)
{
if (type && unix_type < 0)
set_win32_error( WSAESOCKTNOSUPPORT );
else
set_win32_error( WSAEPROTONOSUPPORT );
return -1;
}
if (unix_family < 0)
{
if (family >= 0 && unix_type < 0)
set_win32_error( WSAESOCKTNOSUPPORT );
else
set_win32_error( WSAEAFNOSUPPORT );
return -1;
}
sockfd = socket( unix_family, unix_type, unix_protocol );
if (sockfd == -1)
{
if (errno == EINVAL) set_win32_error( WSAESOCKTNOSUPPORT );
else set_win32_error( sock_get_error( errno ));
return -1;
}
fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
if (family == WS_AF_IPX && protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
{
#ifdef HAS_IPX
int ipx_type = protocol - WS_NSPROTO_IPX;
#ifdef SOL_IPX
setsockopt( sockfd, SOL_IPX, IPX_TYPE, &ipx_type, sizeof(ipx_type) );
#else
struct ipx val;
/* Should we retrieve val using a getsockopt call and then
* set the modified one? */
val.ipx_pt = ipx_type;
setsockopt( sockfd, 0, SO_DEFAULT_HEADERS, &val, sizeof(val) );
#endif
#endif
}
if (unix_family == AF_INET || unix_family == AF_INET6)
{
/* ensure IP_DONTFRAGMENT is disabled for SOCK_DGRAM and SOCK_RAW, enabled for SOCK_STREAM */
if (unix_type == SOCK_DGRAM || unix_type == SOCK_RAW) /* in Linux the global default can be enabled */
set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, FALSE );
else if (unix_type == SOCK_STREAM)
set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, TRUE );
}
#ifdef IPV6_V6ONLY
if (unix_family == AF_INET6)
{
static const int enable = 1;
setsockopt( sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable) );
}
#endif
sock->state = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
sock->flags = flags;
sock->proto = protocol;
sock->type = type;
sock->family = family;
if (sock->fd)
{
options = get_fd_options( sock->fd );
release_object( sock->fd );
}
if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj, options )))
{
return -1;
}
sock_reselect( sock );
return 0;
}
/* accepts a socket and inits it */
static int accept_new_fd( struct sock *sock )
{
/* Try to accept(2). We can't be safe that this an already connected socket
* or that accept() is allowed on it. In those cases we will get -1/errno
* return.
*/
struct sockaddr saddr;
socklen_t slen = sizeof(saddr);
int acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen );
if (acceptfd != -1)
fcntl( acceptfd, F_SETFL, O_NONBLOCK );
else
set_error( sock_get_ntstatus( errno ));
return acceptfd;
}
/* accept a socket (creates a new fd) */
static struct sock *accept_socket( struct sock *sock )
{
struct sock *acceptsock;
int acceptfd;
if (get_unix_fd( sock->fd ) == -1) return NULL;
if ( sock->deferred )
{
acceptsock = sock->deferred;
sock->deferred = NULL;
}
else
{
if ((acceptfd = accept_new_fd( sock )) == -1) return NULL;
if (!(acceptsock = create_socket()))
{
close( acceptfd );
return NULL;
}
/* newly created socket gets the same properties of the listening socket */
acceptsock->state = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
if (sock->state & FD_WINE_NONBLOCKING)
acceptsock->state |= FD_WINE_NONBLOCKING;
acceptsock->mask = sock->mask;
acceptsock->proto = sock->proto;
acceptsock->type = sock->type;
acceptsock->family = sock->family;
acceptsock->window = sock->window;
acceptsock->message = sock->message;
acceptsock->connect_time = current_time;
if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
acceptsock->flags = sock->flags;
if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
get_fd_options( sock->fd ) )))
{
release_object( acceptsock );
return NULL;
}
}
clear_error();
sock->pending_events &= ~FD_ACCEPT;
sock->reported_events &= ~FD_ACCEPT;
sock_reselect( sock );
return acceptsock;
}
static int accept_into_socket( struct sock *sock, struct sock *acceptsock )
{
int acceptfd;
struct fd *newfd;
if (get_unix_fd( sock->fd ) == -1) return FALSE;
if ( sock->deferred )
{
newfd = dup_fd_object( sock->deferred->fd, 0, 0,
get_fd_options( acceptsock->fd ) );
if ( !newfd )
return FALSE;
set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj );
release_object( sock->deferred );
sock->deferred = NULL;
}
else
{
if ((acceptfd = accept_new_fd( sock )) == -1)
return FALSE;
if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
get_fd_options( acceptsock->fd ) )))
return FALSE;
}
acceptsock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
acceptsock->pending_events = 0;
acceptsock->reported_events = 0;
acceptsock->polling = 0;
acceptsock->proto = sock->proto;
acceptsock->type = sock->type;
acceptsock->family = sock->family;
acceptsock->wparam = 0;
acceptsock->deferred = NULL;
acceptsock->connect_time = current_time;
fd_copy_completion( acceptsock->fd, newfd );
release_object( acceptsock->fd );
acceptsock->fd = newfd;
clear_error();
sock->pending_events &= ~FD_ACCEPT;
sock->reported_events &= ~FD_ACCEPT;
sock_reselect( sock );
return TRUE;
}
/* return an errno value mapped to a WSA error */
static unsigned int sock_get_error( int err )
{
switch (err)
{
case EINTR: return WSAEINTR;
case EBADF: return WSAEBADF;
case EPERM:
case EACCES: return WSAEACCES;
case EFAULT: return WSAEFAULT;
case EINVAL: return WSAEINVAL;
case EMFILE: return WSAEMFILE;
case EINPROGRESS:
case EWOULDBLOCK: return WSAEWOULDBLOCK;
case EALREADY: return WSAEALREADY;
case ENOTSOCK: return WSAENOTSOCK;
case EDESTADDRREQ: return WSAEDESTADDRREQ;
case EMSGSIZE: return WSAEMSGSIZE;
case EPROTOTYPE: return WSAEPROTOTYPE;
case ENOPROTOOPT: return WSAENOPROTOOPT;
case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT;
case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT;
case EOPNOTSUPP: return WSAEOPNOTSUPP;
case EPFNOSUPPORT: return WSAEPFNOSUPPORT;
case EAFNOSUPPORT: return WSAEAFNOSUPPORT;
case EADDRINUSE: return WSAEADDRINUSE;
case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL;
case ENETDOWN: return WSAENETDOWN;
case ENETUNREACH: return WSAENETUNREACH;
case ENETRESET: return WSAENETRESET;
case ECONNABORTED: return WSAECONNABORTED;
case EPIPE:
case ECONNRESET: return WSAECONNRESET;
case ENOBUFS: return WSAENOBUFS;
case EISCONN: return WSAEISCONN;
case ENOTCONN: return WSAENOTCONN;
case ESHUTDOWN: return WSAESHUTDOWN;
case ETOOMANYREFS: return WSAETOOMANYREFS;
case ETIMEDOUT: return WSAETIMEDOUT;
case ECONNREFUSED: return WSAECONNREFUSED;
case ELOOP: return WSAELOOP;
case ENAMETOOLONG: return WSAENAMETOOLONG;
case EHOSTDOWN: return WSAEHOSTDOWN;
case EHOSTUNREACH: return WSAEHOSTUNREACH;
case ENOTEMPTY: return WSAENOTEMPTY;
#ifdef EPROCLIM
case EPROCLIM: return WSAEPROCLIM;
#endif
#ifdef EUSERS
case EUSERS: return WSAEUSERS;
#endif
#ifdef EDQUOT
case EDQUOT: return WSAEDQUOT;
#endif
#ifdef ESTALE
case ESTALE: return WSAESTALE;
#endif
#ifdef EREMOTE
case EREMOTE: return WSAEREMOTE;
#endif
case 0: return 0;
default:
errno = err;
perror("wineserver: sock_get_error() can't map error");
return WSAEFAULT;
}
}
static int sock_get_ntstatus( int err )
{
switch ( err )
{
case EBADF: return STATUS_INVALID_HANDLE;
case EBUSY: return STATUS_DEVICE_BUSY;
case EPERM:
case EACCES: return STATUS_ACCESS_DENIED;
case EFAULT: return STATUS_ACCESS_VIOLATION;
case EINVAL: return STATUS_INVALID_PARAMETER;
case ENFILE:
case EMFILE: return STATUS_TOO_MANY_OPENED_FILES;
case EINPROGRESS:
case EWOULDBLOCK: return STATUS_DEVICE_NOT_READY;
case EALREADY: return STATUS_NETWORK_BUSY;
case ENOTSOCK: return STATUS_OBJECT_TYPE_MISMATCH;
case EDESTADDRREQ: return STATUS_INVALID_PARAMETER;
case EMSGSIZE: return STATUS_BUFFER_OVERFLOW;
case EPROTONOSUPPORT:
case ESOCKTNOSUPPORT:
case EPFNOSUPPORT:
case EAFNOSUPPORT:
case EPROTOTYPE: return STATUS_NOT_SUPPORTED;
case ENOPROTOOPT: return STATUS_INVALID_PARAMETER;
case EOPNOTSUPP: return STATUS_NOT_SUPPORTED;
case EADDRINUSE: return STATUS_SHARING_VIOLATION;
case EADDRNOTAVAIL: return STATUS_INVALID_PARAMETER;
case ECONNREFUSED: return STATUS_CONNECTION_REFUSED;
case ESHUTDOWN: return STATUS_PIPE_DISCONNECTED;
case ENOTCONN: return STATUS_INVALID_CONNECTION;
case ETIMEDOUT: return STATUS_IO_TIMEOUT;
case ENETUNREACH: return STATUS_NETWORK_UNREACHABLE;
case EHOSTUNREACH: return STATUS_HOST_UNREACHABLE;
case ENETDOWN: return STATUS_NETWORK_BUSY;
case EPIPE:
case ECONNRESET: return STATUS_CONNECTION_RESET;
case ECONNABORTED: return STATUS_CONNECTION_ABORTED;
case 0: return STATUS_SUCCESS;
default:
errno = err;
perror("wineserver: sock_get_ntstatus() can't map error");
return STATUS_UNSUCCESSFUL;
}
}
static struct accept_req *alloc_accept_req( struct sock *sock, struct sock *acceptsock, struct async *async,
const struct afd_accept_into_params *params )
{
struct accept_req *req = mem_alloc( sizeof(*req) );
if (req)
{
req->async = (struct async *)grab_object( async );
req->iosb = async_get_iosb( async );
req->sock = (struct sock *)grab_object( sock );
req->acceptsock = acceptsock;
if (acceptsock) grab_object( acceptsock );
req->accepted = 0;
req->recv_len = 0;
req->local_len = 0;
if (params)
{
req->recv_len = params->recv_len;
req->local_len = params->local_len;
}
}
return req;
}
static int sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
{
struct sock *sock = get_fd_user( fd );
int unix_fd;
assert( sock->obj.ops == &sock_ops );
if (code != IOCTL_AFD_WINE_CREATE && (unix_fd = get_unix_fd( fd )) < 0) return 0;
switch(code)
{
case IOCTL_AFD_WINE_CREATE:
{
const struct afd_create_params *params = get_req_data();
if (get_req_data_size() != sizeof(*params))
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
init_socket( sock, params->family, params->type, params->protocol, params->flags );
return 0;
}
case IOCTL_AFD_WINE_ACCEPT:
{
struct sock *acceptsock;
obj_handle_t handle;
if (get_reply_max_size() != sizeof(handle))
{
set_error( STATUS_BUFFER_TOO_SMALL );
return 0;
}
if (!(acceptsock = accept_socket( sock )))
{
struct accept_req *req;
if (sock->state & FD_WINE_NONBLOCKING) return 0;
if (get_error() != STATUS_DEVICE_NOT_READY) return 0;
if (!(req = alloc_accept_req( sock, NULL, async, NULL ))) return 0;
list_add_tail( &sock->accept_list, &req->entry );
async_set_completion_callback( async, free_accept_req, req );
queue_async( &sock->accept_q, async );
sock_reselect( sock );
set_error( STATUS_PENDING );
return 1;
}
handle = alloc_handle( current->process, &acceptsock->obj,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
acceptsock->wparam = handle;
release_object( acceptsock );
set_reply_data( &handle, sizeof(handle) );
return 0;
}
case IOCTL_AFD_WINE_ACCEPT_INTO:
{
static const int access = FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES | FILE_READ_DATA;
const struct afd_accept_into_params *params = get_req_data();
struct sock *acceptsock;
unsigned int remote_len;
struct accept_req *req;
if (get_req_data_size() != sizeof(*params) ||
get_reply_max_size() < params->recv_len ||
get_reply_max_size() - params->recv_len < params->local_len)
{
set_error( STATUS_BUFFER_TOO_SMALL );
return 0;
}
remote_len = get_reply_max_size() - params->recv_len - params->local_len;
if (remote_len < sizeof(int))
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (!(acceptsock = (struct sock *)get_handle_obj( current->process, params->accept_handle, access, &sock_ops )))
return 0;
if (acceptsock->accept_recv_req)
{
release_object( acceptsock );
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (!(req = alloc_accept_req( sock, acceptsock, async, params )))
{
release_object( acceptsock );
return 0;
}
list_add_tail( &sock->accept_list, &req->entry );
acceptsock->accept_recv_req = req;
release_object( acceptsock );
acceptsock->wparam = params->accept_handle;
async_set_completion_callback( async, free_accept_req, req );
queue_async( &sock->accept_q, async );
sock_reselect( sock );
set_error( STATUS_PENDING );
return 1;
}
case IOCTL_AFD_LISTEN:
{
const struct afd_listen_params *params = get_req_data();
if (get_req_data_size() < sizeof(*params))
{
set_error( STATUS_INVALID_PARAMETER );
return 0;
}
if (listen( unix_fd, params->backlog ) < 0)
{
set_error( sock_get_ntstatus( errno ) );
return 0;
}
sock->pending_events &= ~FD_ACCEPT;
sock->reported_events &= ~FD_ACCEPT;
sock->state |= FD_WINE_LISTENING;
sock->state &= ~(FD_CONNECT | FD_WINE_CONNECTED);
/* we may already be selecting for FD_ACCEPT */
sock_reselect( sock );
return 0;
}
case IOCTL_AFD_WINE_ADDRESS_LIST_CHANGE:
if ((sock->state & FD_WINE_NONBLOCKING) && async_is_blocking( async ))
{
set_error( STATUS_DEVICE_NOT_READY );
return 0;
}
if (!sock_get_ifchange( sock )) return 0;
queue_async( &sock->ifchange_q, async );
set_error( STATUS_PENDING );
return 1;
default:
set_error( STATUS_NOT_SUPPORTED );
return 0;
}
}
#ifdef HAVE_LINUX_RTNETLINK_H
/* only keep one ifchange object around, all sockets waiting for wakeups will look to it */
static struct object *ifchange_object;
static void ifchange_dump( struct object *obj, int verbose );
static struct fd *ifchange_get_fd( struct object *obj );
static void ifchange_destroy( struct object *obj );
static int ifchange_get_poll_events( struct fd *fd );
static void ifchange_poll_event( struct fd *fd, int event );
struct ifchange
{
struct object obj; /* object header */
struct fd *fd; /* interface change file descriptor */
struct list sockets; /* list of sockets to send interface change notifications */
};
static const struct object_ops ifchange_ops =
{
sizeof(struct ifchange), /* size */
&no_type, /* type */
ifchange_dump, /* dump */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
ifchange_get_fd, /* get_fd */
default_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
no_get_full_name, /* get_full_name */
no_lookup_name, /* lookup_name */
no_link_name, /* link_name */
NULL, /* unlink_name */
no_open_file, /* open_file */
no_kernel_obj_list, /* get_kernel_obj_list */
no_close_handle, /* close_handle */
ifchange_destroy /* destroy */
};
static const struct fd_ops ifchange_fd_ops =
{
ifchange_get_poll_events, /* get_poll_events */
ifchange_poll_event, /* poll_event */
NULL, /* get_fd_type */
no_fd_read, /* read */
no_fd_write, /* write */
no_fd_flush, /* flush */
no_fd_get_file_info, /* get_file_info */
no_fd_get_volume_info, /* get_volume_info */
no_fd_ioctl, /* ioctl */
NULL, /* queue_async */
NULL /* reselect_async */
};
static void ifchange_dump( struct object *obj, int verbose )
{
assert( obj->ops == &ifchange_ops );
fprintf( stderr, "Interface change\n" );
}
static struct fd *ifchange_get_fd( struct object *obj )
{
struct ifchange *ifchange = (struct ifchange *)obj;
return (struct fd *)grab_object( ifchange->fd );
}
static void ifchange_destroy( struct object *obj )
{
struct ifchange *ifchange = (struct ifchange *)obj;
assert( obj->ops == &ifchange_ops );
release_object( ifchange->fd );
/* reset the global ifchange object so that it will be recreated if it is needed again */
assert( obj == ifchange_object );
ifchange_object = NULL;
}
static int ifchange_get_poll_events( struct fd *fd )
{
return POLLIN;
}
/* wake up all the sockets waiting for a change notification event */
static void ifchange_wake_up( struct object *obj, unsigned int status )
{
struct ifchange *ifchange = (struct ifchange *)obj;
struct list *ptr, *next;
assert( obj->ops == &ifchange_ops );
assert( obj == ifchange_object );
LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets )
{
struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry );
assert( sock->ifchange_obj );
async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */
sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */
}
}
static void ifchange_poll_event( struct fd *fd, int event )
{
struct object *ifchange = get_fd_user( fd );
unsigned int status = STATUS_PENDING;
char buffer[PIPE_BUF];
int r;
r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT );
if (r < 0)
{
if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN))
return; /* retry when poll() says the socket is ready */
status = sock_get_ntstatus( errno );
}
else if (r > 0)
{
struct nlmsghdr *nlh;
for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r))
{
if (nlh->nlmsg_type == NLMSG_DONE)
break;
if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR)
status = STATUS_SUCCESS;
}
}
else status = STATUS_CANCELLED;
if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status );
}
#endif
/* we only need one of these interface notification objects, all of the sockets dependent upon
* it will wake up when a notification event occurs */
static struct object *get_ifchange( void )
{
#ifdef HAVE_LINUX_RTNETLINK_H
struct ifchange *ifchange;
struct sockaddr_nl addr;
int unix_fd;
if (ifchange_object)
{
/* increment the refcount for each socket that uses the ifchange object */
return grab_object( ifchange_object );
}
/* create the socket we need for processing interface change notifications */
unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE );
if (unix_fd == -1)
{
set_error( sock_get_ntstatus( errno ));
return NULL;
}
fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */
memset( &addr, 0, sizeof(addr) );
addr.nl_family = AF_NETLINK;
addr.nl_groups = RTMGRP_IPV4_IFADDR;
/* bind the socket to the special netlink kernel interface */
if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1)
{
close( unix_fd );
set_error( sock_get_ntstatus( errno ));
return NULL;
}
if (!(ifchange = alloc_object( &ifchange_ops )))
{
close( unix_fd );
set_error( STATUS_NO_MEMORY );
return NULL;
}
list_init( &ifchange->sockets );
if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 )))
{
release_object( ifchange );
set_error( STATUS_NO_MEMORY );
return NULL;
}
set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */
/* the ifchange object is now successfully configured */
ifchange_object = &ifchange->obj;
return &ifchange->obj;
#else
set_error( STATUS_NOT_SUPPORTED );
return NULL;
#endif
}
/* add the socket to the interface change notification list */
static void ifchange_add_sock( struct object *obj, struct sock *sock )
{
#ifdef HAVE_LINUX_RTNETLINK_H
struct ifchange *ifchange = (struct ifchange *)obj;
list_add_tail( &ifchange->sockets, &sock->ifchange_entry );
#endif
}
/* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */
static struct object *sock_get_ifchange( struct sock *sock )
{
struct object *ifchange;
if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */
return sock->ifchange_obj;
if (!(ifchange = get_ifchange()))
return NULL;
/* add the socket to the ifchange notification list */
ifchange_add_sock( ifchange, sock );
sock->ifchange_obj = ifchange;
return ifchange;
}
/* destroy an existing ifchange queue for a specific socket */
static void sock_release_ifchange( struct sock *sock )
{
if (sock->ifchange_obj)
{
list_remove( &sock->ifchange_entry );
release_object( sock->ifchange_obj );
sock->ifchange_obj = NULL;
}
}
static void socket_device_dump( struct object *obj, int verbose );
static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
unsigned int attr, struct object *root );
static struct object *socket_device_open_file( struct object *obj, unsigned int access,
unsigned int sharing, unsigned int options );
static const struct object_ops socket_device_ops =
{
sizeof(struct object), /* size */
&device_type, /* type */
socket_device_dump, /* dump */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
no_satisfied, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
default_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
default_get_full_name, /* get_full_name */
socket_device_lookup_name, /* lookup_name */
directory_link_name, /* link_name */
default_unlink_name, /* unlink_name */
socket_device_open_file, /* open_file */
no_kernel_obj_list, /* get_kernel_obj_list */
no_close_handle, /* close_handle */
no_destroy /* destroy */
};
static void socket_device_dump( struct object *obj, int verbose )
{
fputs( "Socket device\n", stderr );
}
static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
unsigned int attr, struct object *root )
{
return NULL;
}
static struct object *socket_device_open_file( struct object *obj, unsigned int access,
unsigned int sharing, unsigned int options )
{
struct sock *sock;
if (!(sock = create_socket())) return NULL;
if (!(sock->fd = alloc_pseudo_fd( &sock_fd_ops, &sock->obj, options )))
{
release_object( sock );
return NULL;
}
return &sock->obj;
}
struct object *create_socket_device( struct object *root, const struct unicode_str *name,
unsigned int attr, const struct security_descriptor *sd )
{
return create_named_object( root, &socket_device_ops, name, attr, sd );
}
/* set socket event parameters */
DECL_HANDLER(set_socket_event)
{
struct sock *sock;
struct event *old_event;
if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
FILE_WRITE_ATTRIBUTES, &sock_ops))) return;
if (get_unix_fd( sock->fd ) == -1) return;
old_event = sock->event;
sock->mask = req->mask;
if (req->window)
{
sock->pending_events &= ~req->mask;
sock->reported_events &= ~req->mask;
}
sock->event = NULL;
sock->window = req->window;
sock->message = req->msg;
sock->wparam = req->handle; /* wparam is the socket handle */
if (req->event) sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
sock_reselect( sock );
sock->state |= FD_WINE_NONBLOCKING;
/* if a network event is pending, signal the event object
it is possible that FD_CONNECT or FD_ACCEPT network events has happened
before a WSAEventSelect() was done on it.
(when dealing with Asynchronous socket) */
sock_wake_up( sock );
if (old_event) release_object( old_event ); /* we're through with it */
release_object( &sock->obj );
}
/* get socket event parameters */
DECL_HANDLER(get_socket_event)
{
struct sock *sock;
if (!(sock = (struct sock *)get_handle_obj( current->process, req->handle,
FILE_READ_ATTRIBUTES, &sock_ops ))) return;
if (get_unix_fd( sock->fd ) == -1) return;
reply->mask = sock->mask;
reply->pmask = sock->pending_events;
reply->state = sock->state;
set_reply_data( sock->errors, min( get_reply_max_size(), sizeof(sock->errors) ));
if (req->service)
{
if (req->c_event)
{
struct event *cevent = get_event_obj( current->process, req->c_event,
EVENT_MODIFY_STATE );
if (cevent)
{
reset_event( cevent );
release_object( cevent );
}
}
sock->pending_events = 0;
sock_reselect( sock );
}
release_object( &sock->obj );
}
/* re-enable pending socket events */
DECL_HANDLER(enable_socket_event)
{
struct sock *sock;
if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
FILE_WRITE_ATTRIBUTES, &sock_ops)))
return;
if (get_unix_fd( sock->fd ) == -1) return;
/* for event-based notification, windows erases stale events */
sock->pending_events &= ~req->mask;
sock->reported_events &= ~req->mask;
sock->state |= req->sstate;
sock->state &= ~req->cstate;
if (sock->type != WS_SOCK_STREAM) sock->state &= ~STREAM_FLAG_MASK;
sock_reselect( sock );
release_object( &sock->obj );
}
DECL_HANDLER(set_socket_deferred)
{
struct sock *sock, *acceptsock;
sock=(struct sock *)get_handle_obj( current->process, req->handle, FILE_WRITE_ATTRIBUTES, &sock_ops );
if ( !sock )
return;
acceptsock = (struct sock *)get_handle_obj( current->process, req->deferred, 0, &sock_ops );
if ( !acceptsock )
{
release_object( sock );
return;
}
sock->deferred = acceptsock;
release_object( sock );
}
DECL_HANDLER(get_socket_info)
{
struct sock *sock;
sock = (struct sock *)get_handle_obj( current->process, req->handle, FILE_READ_ATTRIBUTES, &sock_ops );
if (!sock) return;
if (get_unix_fd( sock->fd ) == -1) return;
reply->family = sock->family;
reply->type = sock->type;
reply->protocol = sock->proto;
release_object( &sock->obj );
}
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