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regedit: Use wide character string literals in framewnd.c.
[wine.git] / server / sock.c
blobb403541fcbfca2a34025c82d5ad04a4e59cbf646
1 /*
2 * Server-side socket management
3 *
4 * Copyright (C) 1999 Marcus Meissner, Ove Kåven
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 *
20 * FIXME: we use read|write access in all cases. Shouldn't we depend that
21 * on the access of the current handle?
22 */
23
24 #include "config.h"
25
26 #include <assert.h>
27 #include <fcntl.h>
28 #include <stdarg.h>
29 #include <stdio.h>
30 #include <string.h>
31 #include <stdlib.h>
32 #include <errno.h>
33 #ifdef HAVE_IFADDRS_H
34 # include <ifaddrs.h>
35 #endif
36 #ifdef HAVE_NET_IF_H
37 # include <net/if.h>
38 #endif
39 #ifdef HAVE_NETINET_IN_H
40 # include <netinet/in.h>
41 #endif
42 #include <poll.h>
43 #include <sys/time.h>
44 #include <sys/types.h>
45 #include <sys/socket.h>
46 #include <sys/ioctl.h>
47 #ifdef HAVE_SYS_FILIO_H
48 # include <sys/filio.h>
49 #endif
50 #include <time.h>
51 #include <unistd.h>
52 #include <limits.h>
53 #ifdef HAVE_LINUX_FILTER_H
54 # include <linux/filter.h>
55 #endif
56 #ifdef HAVE_LINUX_RTNETLINK_H
57 # include <linux/rtnetlink.h>
58 #endif
59
60 #ifdef HAVE_NETIPX_IPX_H
61 # include <netipx/ipx.h>
62 #elif defined(HAVE_LINUX_IPX_H)
63 # ifdef HAVE_ASM_TYPES_H
64 # include <asm/types.h>
65 # endif
66 # ifdef HAVE_LINUX_TYPES_H
67 # include <linux/types.h>
68 # endif
69 # include <linux/ipx.h>
70 #endif
71 #if defined(SOL_IPX) || defined(SO_DEFAULT_HEADERS)
72 # define HAS_IPX
73 #endif
74
75 #ifdef HAVE_LINUX_IRDA_H
76 # ifdef HAVE_LINUX_TYPES_H
77 # include <linux/types.h>
78 # endif
79 # include <linux/irda.h>
80 # define HAS_IRDA
81 #endif
82
83 #include "ntstatus.h"
84 #define WIN32_NO_STATUS
85 #include "windef.h"
86 #include "winternl.h"
87 #include "winerror.h"
88 #define USE_WS_PREFIX
89 #include "winsock2.h"
90 #include "ws2tcpip.h"
91 #include "wsipx.h"
92 #include "af_irda.h"
93 #include "wine/afd.h"
94
95 #include "process.h"
96 #include "file.h"
97 #include "handle.h"
98 #include "thread.h"
99 #include "request.h"
100 #include "user.h"
101
102 #if defined(linux) && !defined(IP_UNICAST_IF)
103 #define IP_UNICAST_IF 50
104 #endif
105
106 static const char magic_loopback_addr[] = {127, 12, 34, 56};
107
108 union win_sockaddr
109 {
110 struct WS_sockaddr addr;
111 struct WS_sockaddr_in in;
112 struct WS_sockaddr_in6 in6;
113 struct WS_sockaddr_ipx ipx;
114 SOCKADDR_IRDA irda;
115 };
116
117 static struct list poll_list = LIST_INIT( poll_list );
118
119 struct poll_req
120 {
121 struct list entry;
122 struct async *async;
123 struct iosb *iosb;
124 struct timeout_user *timeout;
125 timeout_t orig_timeout;
126 int exclusive;
127 unsigned int count;
128 struct
129 {
130 struct sock *sock;
131 int mask;
132 obj_handle_t handle;
133 int flags;
134 unsigned int status;
135 } sockets[1];
136 };
137
138 struct accept_req
139 {
140 struct list entry;
141 struct async *async;
142 struct iosb *iosb;
143 struct sock *sock, *acceptsock;
144 int accepted;
145 unsigned int recv_len, local_len;
146 };
147
148 struct connect_req
149 {
150 struct async *async;
151 struct iosb *iosb;
152 struct sock *sock;
153 unsigned int addr_len, send_len, send_cursor;
154 };
155
156 struct send_req
157 {
158 struct iosb *iosb;
159 struct sock *sock;
160 };
161
162 enum connection_state
163 {
164 SOCK_LISTENING,
165 SOCK_UNCONNECTED,
166 SOCK_CONNECTING,
167 SOCK_CONNECTED,
168 SOCK_CONNECTIONLESS,
169 };
170
171 struct sock
172 {
173 struct object obj; /* object header */
174 struct fd *fd; /* socket file descriptor */
175 enum connection_state state; /* connection state */
176 unsigned int mask; /* event mask */
177 /* pending AFD_POLL_* events which have not yet been reported to the application */
178 unsigned int pending_events;
179 /* AFD_POLL_* events which have already been reported and should not be
180 * selected for again until reset by a relevant call.
181 *
182 * For example, if AFD_POLL_READ is set here and not in pending_events, it
183 * has already been reported and consumed, and we should not report it
184 * again, even if POLLIN is signaled, until it is reset by e.g recv().
185 *
186 * If an event has been signaled and not consumed yet, it will be set in
187 * both pending_events and reported_events (as we should only ever report
188 * any event once until it is reset.) */
189 unsigned int reported_events;
190 unsigned int flags; /* socket flags */
191 unsigned short proto; /* socket protocol */
192 unsigned short type; /* socket type */
193 unsigned short family; /* socket family */
194 struct event *event; /* event object */
195 user_handle_t window; /* window to send the message to */
196 unsigned int message; /* message to send */
197 obj_handle_t wparam; /* message wparam (socket handle) */
198 int errors[AFD_POLL_BIT_COUNT]; /* event errors */
199 timeout_t connect_time;/* time the socket was connected */
200 struct sock *deferred; /* socket that waits for a deferred accept */
201 struct async_queue read_q; /* queue for asynchronous reads */
202 struct async_queue write_q; /* queue for asynchronous writes */
203 struct async_queue ifchange_q; /* queue for interface change notifications */
204 struct async_queue accept_q; /* queue for asynchronous accepts */
205 struct async_queue connect_q; /* queue for asynchronous connects */
206 struct async_queue poll_q; /* queue for asynchronous polls */
207 struct object *ifchange_obj; /* the interface change notification object */
208 struct list ifchange_entry; /* entry in ifchange notification list */
209 struct list accept_list; /* list of pending accept requests */
210 struct accept_req *accept_recv_req; /* pending accept-into request which will recv on this socket */
211 struct connect_req *connect_req; /* pending connection request */
212 struct poll_req *main_poll; /* main poll */
213 union win_sockaddr addr; /* socket name */
214 int addr_len; /* socket name length */
215 unsigned int rcvbuf; /* advisory recv buffer size */
216 unsigned int sndbuf; /* advisory send buffer size */
217 unsigned int rcvtimeo; /* receive timeout in ms */
218 unsigned int sndtimeo; /* send timeout in ms */
219 unsigned int rd_shutdown : 1; /* is the read end shut down? */
220 unsigned int wr_shutdown : 1; /* is the write end shut down? */
221 unsigned int wr_shutdown_pending : 1; /* is a write shutdown pending? */
222 unsigned int hangup : 1; /* has the read end received a hangup? */
223 unsigned int aborted : 1; /* did we get a POLLERR or irregular POLLHUP? */
224 unsigned int nonblocking : 1; /* is the socket nonblocking? */
225 unsigned int bound : 1; /* is the socket bound? */
226 };
227
228 static void sock_dump( struct object *obj, int verbose );
229 static struct fd *sock_get_fd( struct object *obj );
230 static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
231 static void sock_destroy( struct object *obj );
232 static struct object *sock_get_ifchange( struct sock *sock );
233 static void sock_release_ifchange( struct sock *sock );
234
235 static int sock_get_poll_events( struct fd *fd );
236 static void sock_poll_event( struct fd *fd, int event );
237 static enum server_fd_type sock_get_fd_type( struct fd *fd );
238 static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
239 static void sock_cancel_async( struct fd *fd, struct async *async );
240 static void sock_queue_async( struct fd *fd, struct async *async, int type, int count );
241 static void sock_reselect_async( struct fd *fd, struct async_queue *queue );
242
243 static int accept_into_socket( struct sock *sock, struct sock *acceptsock );
244 static struct sock *accept_socket( struct sock *sock );
245 static int sock_get_ntstatus( int err );
246 static unsigned int sock_get_error( int err );
247 static void poll_socket( struct sock *poll_sock, struct async *async, int exclusive, timeout_t timeout,
248 unsigned int count, const struct afd_poll_socket_64 *sockets );
249
250 static const struct object_ops sock_ops =
251 {
252 sizeof(struct sock), /* size */
253 &file_type, /* type */
254 sock_dump, /* dump */
255 add_queue, /* add_queue */
256 remove_queue, /* remove_queue */
257 default_fd_signaled, /* signaled */
258 no_satisfied, /* satisfied */
259 no_signal, /* signal */
260 sock_get_fd, /* get_fd */
261 default_map_access, /* map_access */
262 default_get_sd, /* get_sd */
263 default_set_sd, /* set_sd */
264 no_get_full_name, /* get_full_name */
265 no_lookup_name, /* lookup_name */
266 no_link_name, /* link_name */
267 NULL, /* unlink_name */
268 no_open_file, /* open_file */
269 no_kernel_obj_list, /* get_kernel_obj_list */
270 sock_close_handle, /* close_handle */
271 sock_destroy /* destroy */
272 };
273
274 static const struct fd_ops sock_fd_ops =
275 {
276 sock_get_poll_events, /* get_poll_events */
277 sock_poll_event, /* poll_event */
278 sock_get_fd_type, /* get_fd_type */
279 no_fd_read, /* read */
280 no_fd_write, /* write */
281 no_fd_flush, /* flush */
282 default_fd_get_file_info, /* get_file_info */
283 no_fd_get_volume_info, /* get_volume_info */
284 sock_ioctl, /* ioctl */
285 sock_cancel_async, /* cancel_async */
286 sock_queue_async, /* queue_async */
287 sock_reselect_async /* reselect_async */
288 };
289
290 union unix_sockaddr
291 {
292 struct sockaddr addr;
293 struct sockaddr_in in;
294 struct sockaddr_in6 in6;
295 #ifdef HAS_IPX
296 struct sockaddr_ipx ipx;
297 #endif
298 #ifdef HAS_IRDA
299 struct sockaddr_irda irda;
300 #endif
301 };
302
303 static int sockaddr_from_unix( const union unix_sockaddr *uaddr, struct WS_sockaddr *wsaddr, socklen_t wsaddrlen )
304 {
305 memset( wsaddr, 0, wsaddrlen );
306
307 switch (uaddr->addr.sa_family)
308 {
309 case AF_INET:
310 {
311 struct WS_sockaddr_in win = {0};
312
313 if (wsaddrlen < sizeof(win)) return -1;
314 win.sin_family = WS_AF_INET;
315 win.sin_port = uaddr->in.sin_port;
316 memcpy( &win.sin_addr, &uaddr->in.sin_addr, sizeof(win.sin_addr) );
317 memcpy( wsaddr, &win, sizeof(win) );
318 return sizeof(win);
319 }
320
321 case AF_INET6:
322 {
323 struct WS_sockaddr_in6 win = {0};
324
325 if (wsaddrlen < sizeof(win)) return -1;
326 win.sin6_family = WS_AF_INET6;
327 win.sin6_port = uaddr->in6.sin6_port;
328 win.sin6_flowinfo = uaddr->in6.sin6_flowinfo;
329 memcpy( &win.sin6_addr, &uaddr->in6.sin6_addr, sizeof(win.sin6_addr) );
330 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
331 win.sin6_scope_id = uaddr->in6.sin6_scope_id;
332 #endif
333 memcpy( wsaddr, &win, sizeof(win) );
334 return sizeof(win);
335 }
336
337 #ifdef HAS_IPX
338 case AF_IPX:
339 {
340 struct WS_sockaddr_ipx win = {0};
341
342 if (wsaddrlen < sizeof(win)) return -1;
343 win.sa_family = WS_AF_IPX;
344 memcpy( win.sa_netnum, &uaddr->ipx.sipx_network, sizeof(win.sa_netnum) );
345 memcpy( win.sa_nodenum, &uaddr->ipx.sipx_node, sizeof(win.sa_nodenum) );
346 win.sa_socket = uaddr->ipx.sipx_port;
347 memcpy( wsaddr, &win, sizeof(win) );
348 return sizeof(win);
349 }
350 #endif
351
352 #ifdef HAS_IRDA
353 case AF_IRDA:
354 {
355 SOCKADDR_IRDA win;
356
357 if (wsaddrlen < sizeof(win)) return -1;
358 win.irdaAddressFamily = WS_AF_IRDA;
359 memcpy( win.irdaDeviceID, &uaddr->irda.sir_addr, sizeof(win.irdaDeviceID) );
360 if (uaddr->irda.sir_lsap_sel != LSAP_ANY)
361 snprintf( win.irdaServiceName, sizeof(win.irdaServiceName), "LSAP-SEL%u", uaddr->irda.sir_lsap_sel );
362 else
363 memcpy( win.irdaServiceName, uaddr->irda.sir_name, sizeof(win.irdaServiceName) );
364 memcpy( wsaddr, &win, sizeof(win) );
365 return sizeof(win);
366 }
367 #endif
368
369 case AF_UNSPEC:
370 return 0;
371
372 default:
373 return -1;
374
375 }
376 }
377
378 static socklen_t sockaddr_to_unix( const struct WS_sockaddr *wsaddr, int wsaddrlen, union unix_sockaddr *uaddr )
379 {
380 memset( uaddr, 0, sizeof(*uaddr) );
381
382 switch (wsaddr->sa_family)
383 {
384 case WS_AF_INET:
385 {
386 struct WS_sockaddr_in win = {0};
387
388 if (wsaddrlen < sizeof(win)) return 0;
389 memcpy( &win, wsaddr, sizeof(win) );
390 uaddr->in.sin_family = AF_INET;
391 uaddr->in.sin_port = win.sin_port;
392 memcpy( &uaddr->in.sin_addr, &win.sin_addr, sizeof(win.sin_addr) );
393 return sizeof(uaddr->in);
394 }
395
396 case WS_AF_INET6:
397 {
398 struct WS_sockaddr_in6 win = {0};
399
400 if (wsaddrlen < sizeof(win)) return 0;
401 memcpy( &win, wsaddr, sizeof(win) );
402 uaddr->in6.sin6_family = AF_INET6;
403 uaddr->in6.sin6_port = win.sin6_port;
404 uaddr->in6.sin6_flowinfo = win.sin6_flowinfo;
405 memcpy( &uaddr->in6.sin6_addr, &win.sin6_addr, sizeof(win.sin6_addr) );
406 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
407 uaddr->in6.sin6_scope_id = win.sin6_scope_id;
408 #endif
409 return sizeof(uaddr->in6);
410 }
411
412 #ifdef HAS_IPX
413 case WS_AF_IPX:
414 {
415 struct WS_sockaddr_ipx win = {0};
416
417 if (wsaddrlen < sizeof(win)) return 0;
418 memcpy( &win, wsaddr, sizeof(win) );
419 uaddr->ipx.sipx_family = AF_IPX;
420 memcpy( &uaddr->ipx.sipx_network, win.sa_netnum, sizeof(win.sa_netnum) );
421 memcpy( &uaddr->ipx.sipx_node, win.sa_nodenum, sizeof(win.sa_nodenum) );
422 uaddr->ipx.sipx_port = win.sa_socket;
423 return sizeof(uaddr->ipx);
424 }
425 #endif
426
427 #ifdef HAS_IRDA
428 case WS_AF_IRDA:
429 {
430 SOCKADDR_IRDA win = {0};
431 unsigned int lsap_sel;
432
433 if (wsaddrlen < sizeof(win)) return 0;
434 memcpy( &win, wsaddr, sizeof(win) );
435 uaddr->irda.sir_family = AF_IRDA;
436 if (sscanf( win.irdaServiceName, "LSAP-SEL%u", &lsap_sel ) == 1)
437 uaddr->irda.sir_lsap_sel = lsap_sel;
438 else
439 {
440 uaddr->irda.sir_lsap_sel = LSAP_ANY;
441 memcpy( uaddr->irda.sir_name, win.irdaServiceName, sizeof(win.irdaServiceName) );
442 }
443 memcpy( &uaddr->irda.sir_addr, win.irdaDeviceID, sizeof(win.irdaDeviceID) );
444 return sizeof(uaddr->irda);
445 }
446 #endif
447
448 case WS_AF_UNSPEC:
449 switch (wsaddrlen)
450 {
451 default: /* likely an ipv4 address */
452 case sizeof(struct WS_sockaddr_in):
453 return sizeof(uaddr->in);
454
455 #ifdef HAS_IPX
456 case sizeof(struct WS_sockaddr_ipx):
457 return sizeof(uaddr->ipx);
458 #endif
459
460 #ifdef HAS_IRDA
461 case sizeof(SOCKADDR_IRDA):
462 return sizeof(uaddr->irda);
463 #endif
464
465 case sizeof(struct WS_sockaddr_in6):
466 return sizeof(uaddr->in6);
467 }
468
469 default:
470 return 0;
471 }
472 }
473
474 static socklen_t get_unix_sockaddr_any( union unix_sockaddr *uaddr, int ws_family )
475 {
476 memset( uaddr, 0, sizeof(*uaddr) );
477 switch (ws_family)
478 {
479 case WS_AF_INET:
480 uaddr->in.sin_family = AF_INET;
481 return sizeof(uaddr->in);
482 case WS_AF_INET6:
483 uaddr->in6.sin6_family = AF_INET6;
484 return sizeof(uaddr->in6);
485 #ifdef HAS_IPX
486 case WS_AF_IPX:
487 uaddr->ipx.sipx_family = AF_IPX;
488 return sizeof(uaddr->ipx);
489 #endif
490 #ifdef HAS_IRDA
491 case WS_AF_IRDA:
492 uaddr->irda.sir_family = AF_IRDA;
493 return sizeof(uaddr->irda);
494 #endif
495 default:
496 return 0;
497 }
498 }
499
500 /* some events are generated at the same time but must be sent in a particular
501 * order (e.g. CONNECT must be sent before READ) */
502 static const enum afd_poll_bit event_bitorder[] =
503 {
504 AFD_POLL_BIT_CONNECT,
505 AFD_POLL_BIT_CONNECT_ERR,
506 AFD_POLL_BIT_ACCEPT,
507 AFD_POLL_BIT_OOB,
508 AFD_POLL_BIT_WRITE,
509 AFD_POLL_BIT_READ,
510 AFD_POLL_BIT_RESET,
511 AFD_POLL_BIT_HUP,
512 AFD_POLL_BIT_CLOSE,
513 };
514
515 typedef enum {
516 SOCK_SHUTDOWN_ERROR = -1,
517 SOCK_SHUTDOWN_EOF = 0,
518 SOCK_SHUTDOWN_POLLHUP = 1
519 } sock_shutdown_t;
520
521 static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
522
523 static sock_shutdown_t sock_check_pollhup(void)
524 {
525 sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
526 int fd[2], n;
527 struct pollfd pfd;
528 char dummy;
529
530 if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) return ret;
531 if ( shutdown( fd[0], 1 ) ) goto out;
532
533 pfd.fd = fd[1];
534 pfd.events = POLLIN;
535 pfd.revents = 0;
536
537 /* Solaris' poll() sometimes returns nothing if given a 0ms timeout here */
538 n = poll( &pfd, 1, 1 );
539 if ( n != 1 ) goto out; /* error or timeout */
540 if ( pfd.revents & POLLHUP )
541 ret = SOCK_SHUTDOWN_POLLHUP;
542 else if ( pfd.revents & POLLIN &&
543 read( fd[1], &dummy, 1 ) == 0 )
544 ret = SOCK_SHUTDOWN_EOF;
545
546 out:
547 close( fd[0] );
548 close( fd[1] );
549 return ret;
550 }
551
552 void sock_init(void)
553 {
554 sock_shutdown_type = sock_check_pollhup();
555
556 switch ( sock_shutdown_type )
557 {
558 case SOCK_SHUTDOWN_EOF:
559 if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
560 break;
561 case SOCK_SHUTDOWN_POLLHUP:
562 if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
563 break;
564 default:
565 fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
566 sock_shutdown_type = SOCK_SHUTDOWN_EOF;
567 }
568 }
569
570 static int sock_reselect( struct sock *sock )
571 {
572 int ev = sock_get_poll_events( sock->fd );
573
574 if (debug_level)
575 fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
576
577 set_fd_events( sock->fd, ev );
578 return ev;
579 }
580
581 static unsigned int afd_poll_flag_to_win32( unsigned int flags )
582 {
583 static const unsigned int map[] =
584 {
585 FD_READ, /* READ */
586 FD_OOB, /* OOB */
587 FD_WRITE, /* WRITE */
588 FD_CLOSE, /* HUP */
589 FD_CLOSE, /* RESET */
590 0, /* CLOSE */
591 FD_CONNECT, /* CONNECT */
592 FD_ACCEPT, /* ACCEPT */
593 FD_CONNECT, /* CONNECT_ERR */
594 };
595
596 unsigned int i, ret = 0;
597
598 for (i = 0; i < ARRAY_SIZE(map); ++i)
599 {
600 if (flags & (1 << i)) ret |= map[i];
601 }
602
603 return ret;
604 }
605
606 /* wake anybody waiting on the socket event or send the associated message */
607 static void sock_wake_up( struct sock *sock )
608 {
609 unsigned int events = sock->pending_events & sock->mask;
610 int i;
611
612 if (sock->event)
613 {
614 if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
615 if (events)
616 set_event( sock->event );
617 }
618 if (sock->window)
619 {
620 if (debug_level) fprintf(stderr, "signalling events %x win %08x\n", events, sock->window );
621 for (i = 0; i < ARRAY_SIZE(event_bitorder); i++)
622 {
623 enum afd_poll_bit event = event_bitorder[i];
624 if (events & (1 << event))
625 {
626 lparam_t lparam = afd_poll_flag_to_win32(1 << event) | (sock_get_error( sock->errors[event] ) << 16);
627 post_message( sock->window, sock->message, sock->wparam, lparam );
628 }
629 }
630 sock->pending_events = 0;
631 sock_reselect( sock );
632 }
633 }
634
635 static inline int sock_error( struct fd *fd )
636 {
637 unsigned int optval = 0;
638 socklen_t optlen = sizeof(optval);
639
640 getsockopt( get_unix_fd(fd), SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
641 return optval;
642 }
643
644 static void free_accept_req( void *private )
645 {
646 struct accept_req *req = private;
647 list_remove( &req->entry );
648 if (req->acceptsock)
649 {
650 req->acceptsock->accept_recv_req = NULL;
651 release_object( req->acceptsock );
652 }
653 release_object( req->async );
654 release_object( req->iosb );
655 release_object( req->sock );
656 free( req );
657 }
658
659 static void fill_accept_output( struct accept_req *req )
660 {
661 const data_size_t out_size = req->iosb->out_size;
662 struct async *async = req->async;
663 union unix_sockaddr unix_addr;
664 struct WS_sockaddr *win_addr;
665 unsigned int remote_len;
666 socklen_t unix_len;
667 int fd, size = 0;
668 char *out_data;
669 int win_len;
670
671 if (!(out_data = mem_alloc( out_size )))
672 {
673 async_terminate( async, get_error() );
674 return;
675 }
676
677 fd = get_unix_fd( req->acceptsock->fd );
678
679 if (req->recv_len && (size = recv( fd, out_data, req->recv_len, 0 )) < 0)
680 {
681 if (!req->accepted && errno == EWOULDBLOCK)
682 {
683 req->accepted = 1;
684 sock_reselect( req->acceptsock );
685 return;
686 }
687
688 async_terminate( async, sock_get_ntstatus( errno ) );
689 free( out_data );
690 return;
691 }
692
693 if (req->local_len)
694 {
695 if (req->local_len < sizeof(int))
696 {
697 async_terminate( async, STATUS_BUFFER_TOO_SMALL );
698 free( out_data );
699 return;
700 }
701
702 unix_len = sizeof(unix_addr);
703 win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + sizeof(int));
704 if (getsockname( fd, &unix_addr.addr, &unix_len ) < 0 ||
705 (win_len = sockaddr_from_unix( &unix_addr, win_addr, req->local_len - sizeof(int) )) < 0)
706 {
707 async_terminate( async, sock_get_ntstatus( errno ) );
708 free( out_data );
709 return;
710 }
711 memcpy( out_data + req->recv_len, &win_len, sizeof(int) );
712 }
713
714 unix_len = sizeof(unix_addr);
715 win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + req->local_len + sizeof(int));
716 remote_len = out_size - req->recv_len - req->local_len;
717 if (getpeername( fd, &unix_addr.addr, &unix_len ) < 0 ||
718 (win_len = sockaddr_from_unix( &unix_addr, win_addr, remote_len - sizeof(int) )) < 0)
719 {
720 async_terminate( async, sock_get_ntstatus( errno ) );
721 free( out_data );
722 return;
723 }
724 memcpy( out_data + req->recv_len + req->local_len, &win_len, sizeof(int) );
725
726 async_request_complete( req->async, STATUS_SUCCESS, size, out_size, out_data );
727 }
728
729 static void complete_async_accept( struct sock *sock, struct accept_req *req )
730 {
731 struct sock *acceptsock = req->acceptsock;
732 struct async *async = req->async;
733
734 if (debug_level) fprintf( stderr, "completing accept request for socket %p\n", sock );
735
736 if (acceptsock)
737 {
738 if (!accept_into_socket( sock, acceptsock ))
739 {
740 async_terminate( async, get_error() );
741 return;
742 }
743 fill_accept_output( req );
744 }
745 else
746 {
747 obj_handle_t handle;
748
749 if (!(acceptsock = accept_socket( sock )))
750 {
751 async_terminate( async, get_error() );
752 return;
753 }
754 handle = alloc_handle_no_access_check( async_get_thread( async )->process, &acceptsock->obj,
755 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
756 acceptsock->wparam = handle;
757 sock_reselect( acceptsock );
758 release_object( acceptsock );
759 if (!handle)
760 {
761 async_terminate( async, get_error() );
762 return;
763 }
764
765 async_request_complete_alloc( req->async, STATUS_SUCCESS, 0, sizeof(handle), &handle );
766 }
767 }
768
769 static void complete_async_accept_recv( struct accept_req *req )
770 {
771 if (debug_level) fprintf( stderr, "completing accept recv request for socket %p\n", req->acceptsock );
772
773 assert( req->recv_len );
774
775 fill_accept_output( req );
776 }
777
778 static void free_connect_req( void *private )
779 {
780 struct connect_req *req = private;
781
782 req->sock->connect_req = NULL;
783 release_object( req->async );
784 release_object( req->iosb );
785 release_object( req->sock );
786 free( req );
787 }
788
789 static void complete_async_connect( struct sock *sock )
790 {
791 struct connect_req *req = sock->connect_req;
792 const char *in_buffer;
793 size_t len;
794 int ret;
795
796 if (debug_level) fprintf( stderr, "completing connect request for socket %p\n", sock );
797
798 sock->state = SOCK_CONNECTED;
799
800 if (!req->send_len)
801 {
802 async_terminate( req->async, STATUS_SUCCESS );
803 return;
804 }
805
806 in_buffer = (const char *)req->iosb->in_data + sizeof(struct afd_connect_params) + req->addr_len;
807 len = req->send_len - req->send_cursor;
808
809 ret = send( get_unix_fd( sock->fd ), in_buffer + req->send_cursor, len, 0 );
810 if (ret < 0 && errno != EWOULDBLOCK)
811 async_terminate( req->async, sock_get_ntstatus( errno ) );
812 else if (ret == len)
813 async_request_complete( req->async, STATUS_SUCCESS, req->send_len, 0, NULL );
814 else
815 req->send_cursor += ret;
816 }
817
818 static void free_poll_req( void *private )
819 {
820 struct poll_req *req = private;
821 unsigned int i;
822
823 if (req->timeout) remove_timeout_user( req->timeout );
824
825 for (i = 0; i < req->count; ++i)
826 release_object( req->sockets[i].sock );
827 release_object( req->async );
828 release_object( req->iosb );
829 list_remove( &req->entry );
830 free( req );
831 }
832
833 static int is_oobinline( struct sock *sock )
834 {
835 int oobinline;
836 socklen_t len = sizeof(oobinline);
837 return !getsockopt( get_unix_fd( sock->fd ), SOL_SOCKET, SO_OOBINLINE, (char *)&oobinline, &len ) && oobinline;
838 }
839
840 static int get_poll_flags( struct sock *sock, int event )
841 {
842 int flags = 0;
843
844 /* A connection-mode socket which has never been connected does not return
845 * write or hangup events, but Linux reports POLLOUT | POLLHUP. */
846 if (sock->state == SOCK_UNCONNECTED)
847 event &= ~(POLLOUT | POLLHUP);
848
849 if (event & POLLIN)
850 {
851 if (sock->state == SOCK_LISTENING)
852 flags |= AFD_POLL_ACCEPT;
853 else
854 flags |= AFD_POLL_READ;
855 }
856 if (event & POLLPRI)
857 flags |= is_oobinline( sock ) ? AFD_POLL_READ : AFD_POLL_OOB;
858 if (event & POLLOUT)
859 flags |= AFD_POLL_WRITE;
860 if (sock->state == SOCK_CONNECTED)
861 flags |= AFD_POLL_CONNECT;
862 if (event & POLLHUP)
863 flags |= AFD_POLL_HUP;
864 if (event & POLLERR)
865 flags |= AFD_POLL_CONNECT_ERR;
866
867 return flags;
868 }
869
870 static void complete_async_poll( struct poll_req *req, unsigned int status )
871 {
872 unsigned int i, signaled_count = 0;
873
874 for (i = 0; i < req->count; ++i)
875 {
876 struct sock *sock = req->sockets[i].sock;
877
878 if (sock->main_poll == req)
879 sock->main_poll = NULL;
880 }
881
882 if (!status)
883 {
884 for (i = 0; i < req->count; ++i)
885 {
886 if (req->sockets[i].flags)
887 ++signaled_count;
888 }
889 }
890
891 if (is_machine_64bit( async_get_thread( req->async )->process->machine ))
892 {
893 size_t output_size = offsetof( struct afd_poll_params_64, sockets[signaled_count] );
894 struct afd_poll_params_64 *output;
895
896 if (!(output = mem_alloc( output_size )))
897 {
898 async_terminate( req->async, get_error() );
899 return;
900 }
901 memset( output, 0, output_size );
902 output->timeout = req->orig_timeout;
903 output->exclusive = req->exclusive;
904 for (i = 0; i < req->count; ++i)
905 {
906 if (!req->sockets[i].flags) continue;
907 output->sockets[output->count].socket = req->sockets[i].handle;
908 output->sockets[output->count].flags = req->sockets[i].flags;
909 output->sockets[output->count].status = req->sockets[i].status;
910 ++output->count;
911 }
912 assert( output->count == signaled_count );
913
914 async_request_complete( req->async, status, output_size, output_size, output );
915 }
916 else
917 {
918 size_t output_size = offsetof( struct afd_poll_params_32, sockets[signaled_count] );
919 struct afd_poll_params_32 *output;
920
921 if (!(output = mem_alloc( output_size )))
922 {
923 async_terminate( req->async, get_error() );
924 return;
925 }
926 memset( output, 0, output_size );
927 output->timeout = req->orig_timeout;
928 output->exclusive = req->exclusive;
929 for (i = 0; i < req->count; ++i)
930 {
931 if (!req->sockets[i].flags) continue;
932 output->sockets[output->count].socket = req->sockets[i].handle;
933 output->sockets[output->count].flags = req->sockets[i].flags;
934 output->sockets[output->count].status = req->sockets[i].status;
935 ++output->count;
936 }
937 assert( output->count == signaled_count );
938
939 async_request_complete( req->async, status, output_size, output_size, output );
940 }
941 }
942
943 static void complete_async_polls( struct sock *sock, int event, int error )
944 {
945 int flags = get_poll_flags( sock, event );
946 struct poll_req *req, *next;
947
948 LIST_FOR_EACH_ENTRY_SAFE( req, next, &poll_list, struct poll_req, entry )
949 {
950 unsigned int i;
951
952 if (req->iosb->status != STATUS_PENDING) continue;
953
954 for (i = 0; i < req->count; ++i)
955 {
956 if (req->sockets[i].sock != sock) continue;
957 if (!(req->sockets[i].mask & flags)) continue;
958
959 if (debug_level)
960 fprintf( stderr, "completing poll for socket %p, wanted %#x got %#x\n",
961 sock, req->sockets[i].mask, flags );
962
963 req->sockets[i].flags = req->sockets[i].mask & flags;
964 req->sockets[i].status = sock_get_ntstatus( error );
965
966 complete_async_poll( req, STATUS_SUCCESS );
967 break;
968 }
969 }
970 }
971
972 static void async_poll_timeout( void *private )
973 {
974 struct poll_req *req = private;
975
976 req->timeout = NULL;
977
978 if (req->iosb->status != STATUS_PENDING) return;
979
980 complete_async_poll( req, STATUS_TIMEOUT );
981 }
982
983 static int sock_dispatch_asyncs( struct sock *sock, int event, int error )
984 {
985 if (event & (POLLIN | POLLPRI))
986 {
987 struct accept_req *req;
988
989 LIST_FOR_EACH_ENTRY( req, &sock->accept_list, struct accept_req, entry )
990 {
991 if (req->iosb->status == STATUS_PENDING && !req->accepted)
992 {
993 complete_async_accept( sock, req );
994 break;
995 }
996 }
997
998 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
999 complete_async_accept_recv( sock->accept_recv_req );
1000 }
1001
1002 if ((event & POLLOUT) && sock->connect_req && sock->connect_req->iosb->status == STATUS_PENDING)
1003 complete_async_connect( sock );
1004
1005 if (event & (POLLIN | POLLPRI) && async_waiting( &sock->read_q ))
1006 {
1007 if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
1008 async_wake_up( &sock->read_q, STATUS_ALERTED );
1009 event &= ~(POLLIN | POLLPRI);
1010 }
1011
1012 if (event & POLLOUT && async_waiting( &sock->write_q ))
1013 {
1014 if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
1015 async_wake_up( &sock->write_q, STATUS_ALERTED );
1016 event &= ~POLLOUT;
1017 }
1018
1019 if (event & (POLLERR | POLLHUP))
1020 {
1021 int status = sock_get_ntstatus( error );
1022 struct accept_req *req, *next;
1023
1024 if (sock->rd_shutdown || sock->hangup)
1025 async_wake_up( &sock->read_q, status );
1026 if (sock->wr_shutdown)
1027 async_wake_up( &sock->write_q, status );
1028
1029 LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry )
1030 {
1031 if (req->iosb->status == STATUS_PENDING)
1032 async_terminate( req->async, status );
1033 }
1034
1035 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1036 async_terminate( sock->accept_recv_req->async, status );
1037
1038 if (sock->connect_req)
1039 async_terminate( sock->connect_req->async, status );
1040 }
1041
1042 return event;
1043 }
1044
1045 static void post_socket_event( struct sock *sock, enum afd_poll_bit event_bit, int error )
1046 {
1047 unsigned int event = (1 << event_bit);
1048
1049 if (!(sock->reported_events & event))
1050 {
1051 sock->pending_events |= event;
1052 sock->reported_events |= event;
1053 sock->errors[event_bit] = error;
1054 }
1055 }
1056
1057 static void sock_dispatch_events( struct sock *sock, enum connection_state prevstate, int event, int error )
1058 {
1059 switch (prevstate)
1060 {
1061 case SOCK_UNCONNECTED:
1062 break;
1063
1064 case SOCK_CONNECTING:
1065 if (event & POLLOUT)
1066 {
1067 post_socket_event( sock, AFD_POLL_BIT_CONNECT, 0 );
1068 sock->errors[AFD_POLL_BIT_CONNECT_ERR] = 0;
1069 }
1070 if (event & (POLLERR | POLLHUP))
1071 post_socket_event( sock, AFD_POLL_BIT_CONNECT_ERR, error );
1072 break;
1073
1074 case SOCK_LISTENING:
1075 if (event & (POLLIN | POLLERR | POLLHUP))
1076 post_socket_event( sock, AFD_POLL_BIT_ACCEPT, error );
1077 break;
1078
1079 case SOCK_CONNECTED:
1080 case SOCK_CONNECTIONLESS:
1081 if (event & POLLIN)
1082 post_socket_event( sock, AFD_POLL_BIT_READ, 0 );
1083
1084 if (event & POLLOUT)
1085 post_socket_event( sock, AFD_POLL_BIT_WRITE, 0 );
1086
1087 if (event & POLLPRI)
1088 post_socket_event( sock, AFD_POLL_BIT_OOB, 0 );
1089
1090 if (event & (POLLERR | POLLHUP))
1091 post_socket_event( sock, AFD_POLL_BIT_HUP, error );
1092 break;
1093 }
1094
1095 sock_wake_up( sock );
1096 }
1097
1098 static void sock_poll_event( struct fd *fd, int event )
1099 {
1100 struct sock *sock = get_fd_user( fd );
1101 int hangup_seen = 0;
1102 enum connection_state prevstate = sock->state;
1103 int error = 0;
1104
1105 assert( sock->obj.ops == &sock_ops );
1106 if (debug_level)
1107 fprintf(stderr, "socket %p select event: %x\n", sock, event);
1108
1109 /* we may change event later, remove from loop here */
1110 if (event & (POLLERR|POLLHUP)) set_fd_events( sock->fd, -1 );
1111
1112 switch (sock->state)
1113 {
1114 case SOCK_UNCONNECTED:
1115 break;
1116
1117 case SOCK_CONNECTING:
1118 if (event & (POLLERR|POLLHUP))
1119 {
1120 sock->state = SOCK_UNCONNECTED;
1121 event &= ~POLLOUT;
1122 error = sock_error( fd );
1123 }
1124 else if (event & POLLOUT)
1125 {
1126 sock->state = SOCK_CONNECTED;
1127 sock->connect_time = current_time;
1128 }
1129 break;
1130
1131 case SOCK_LISTENING:
1132 if (event & (POLLERR|POLLHUP))
1133 error = sock_error( fd );
1134 break;
1135
1136 case SOCK_CONNECTED:
1137 case SOCK_CONNECTIONLESS:
1138 if (sock->type == WS_SOCK_STREAM && (event & POLLIN))
1139 {
1140 char dummy;
1141 int nr;
1142
1143 /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
1144 * has been closed, so we need to check for it explicitly here */
1145 nr = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
1146 if ( nr == 0 )
1147 {
1148 hangup_seen = 1;
1149 event &= ~POLLIN;
1150 }
1151 else if ( nr < 0 )
1152 {
1153 event &= ~POLLIN;
1154 /* EAGAIN can happen if an async recv() falls between the server's poll()
1155 call and the invocation of this routine */
1156 if ( errno != EAGAIN )
1157 {
1158 error = errno;
1159 event |= POLLERR;
1160 if ( debug_level )
1161 fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
1162 }
1163 }
1164 }
1165
1166 if (hangup_seen || (sock_shutdown_type == SOCK_SHUTDOWN_POLLHUP && (event & POLLHUP)))
1167 {
1168 sock->hangup = 1;
1169 }
1170 else if (event & (POLLHUP | POLLERR))
1171 {
1172 sock->aborted = 1;
1173
1174 if (debug_level)
1175 fprintf( stderr, "socket %p aborted by error %d, event %#x\n", sock, error, event );
1176 }
1177
1178 if (hangup_seen)
1179 event |= POLLHUP;
1180 break;
1181 }
1182
1183 complete_async_polls( sock, event, error );
1184
1185 event = sock_dispatch_asyncs( sock, event, error );
1186 sock_dispatch_events( sock, prevstate, event, error );
1187
1188 sock_reselect( sock );
1189 }
1190
1191 static void sock_dump( struct object *obj, int verbose )
1192 {
1193 struct sock *sock = (struct sock *)obj;
1194 assert( obj->ops == &sock_ops );
1195 fprintf( stderr, "Socket fd=%p, state=%x, mask=%x, pending=%x, reported=%x\n",
1196 sock->fd, sock->state,
1197 sock->mask, sock->pending_events, sock->reported_events );
1198 }
1199
1200 static int poll_flags_from_afd( struct sock *sock, int flags )
1201 {
1202 int ev = 0;
1203
1204 /* A connection-mode socket which has never been connected does
1205 * not return write or hangup events, but Linux returns
1206 * POLLOUT | POLLHUP. */
1207 if (sock->state == SOCK_UNCONNECTED)
1208 return -1;
1209
1210 if (flags & (AFD_POLL_READ | AFD_POLL_ACCEPT))
1211 ev |= POLLIN;
1212 if ((flags & AFD_POLL_HUP) && sock->type == WS_SOCK_STREAM)
1213 ev |= POLLIN;
1214 if (flags & AFD_POLL_OOB)
1215 ev |= is_oobinline( sock ) ? POLLIN : POLLPRI;
1216 if (flags & AFD_POLL_WRITE)
1217 ev |= POLLOUT;
1218
1219 return ev;
1220 }
1221
1222 static int sock_get_poll_events( struct fd *fd )
1223 {
1224 struct sock *sock = get_fd_user( fd );
1225 unsigned int mask = sock->mask & ~sock->reported_events;
1226 struct poll_req *req;
1227 int ev = 0;
1228
1229 assert( sock->obj.ops == &sock_ops );
1230
1231 if (!sock->type) /* not initialized yet */
1232 return -1;
1233
1234 switch (sock->state)
1235 {
1236 case SOCK_UNCONNECTED:
1237 /* A connection-mode Windows socket which has never been connected does
1238 * not return any events, but Linux returns POLLOUT | POLLHUP. Hence we
1239 * need to return -1 here, to prevent the socket from being polled on at
1240 * all. */
1241 return -1;
1242
1243 case SOCK_CONNECTING:
1244 return POLLOUT;
1245
1246 case SOCK_LISTENING:
1247 if (!list_empty( &sock->accept_list ) || (mask & AFD_POLL_ACCEPT))
1248 ev |= POLLIN;
1249 break;
1250
1251 case SOCK_CONNECTED:
1252 case SOCK_CONNECTIONLESS:
1253 if (sock->hangup && sock->wr_shutdown && !sock->wr_shutdown_pending)
1254 {
1255 /* Linux returns POLLHUP if a socket is both SHUT_RD and SHUT_WR, or
1256 * if both the socket and its peer are SHUT_WR.
1257 *
1258 * We don't use SHUT_RD, so we can only encounter this in the latter
1259 * case. In that case there can't be any pending read requests (they
1260 * would have already been completed with a length of zero), the
1261 * above condition ensures that we don't have any pending write
1262 * requests, and nothing that can change about the socket state that
1263 * would complete a pending poll request. */
1264 return -1;
1265 }
1266
1267 if (sock->aborted)
1268 return -1;
1269
1270 if (sock->accept_recv_req)
1271 {
1272 ev |= POLLIN;
1273 }
1274 else if (async_queued( &sock->read_q ))
1275 {
1276 if (async_waiting( &sock->read_q )) ev |= POLLIN | POLLPRI;
1277 }
1278 else
1279 {
1280 /* Don't ask for POLLIN if we got a hangup. We won't receive more
1281 * data anyway, but we will get POLLIN if SOCK_SHUTDOWN_EOF. */
1282 if (!sock->hangup)
1283 {
1284 if (mask & AFD_POLL_READ)
1285 ev |= POLLIN;
1286 if (mask & AFD_POLL_OOB)
1287 ev |= POLLPRI;
1288 }
1289
1290 /* We use POLLIN with 0 bytes recv() as hangup indication for stream sockets. */
1291 if (sock->state == SOCK_CONNECTED && (mask & AFD_POLL_HUP) && !(sock->reported_events & AFD_POLL_READ))
1292 ev |= POLLIN;
1293 }
1294
1295 if (async_queued( &sock->write_q ))
1296 {
1297 if (async_waiting( &sock->write_q )) ev |= POLLOUT;
1298 }
1299 else if (!sock->wr_shutdown && (mask & AFD_POLL_WRITE))
1300 {
1301 ev |= POLLOUT;
1302 }
1303
1304 break;
1305 }
1306
1307 LIST_FOR_EACH_ENTRY( req, &poll_list, struct poll_req, entry )
1308 {
1309 unsigned int i;
1310
1311 for (i = 0; i < req->count; ++i)
1312 {
1313 if (req->sockets[i].sock != sock) continue;
1314
1315 ev |= poll_flags_from_afd( sock, req->sockets[i].mask );
1316 }
1317 }
1318
1319 return ev;
1320 }
1321
1322 static enum server_fd_type sock_get_fd_type( struct fd *fd )
1323 {
1324 return FD_TYPE_SOCKET;
1325 }
1326
1327 static void sock_cancel_async( struct fd *fd, struct async *async )
1328 {
1329 struct poll_req *req;
1330
1331 LIST_FOR_EACH_ENTRY( req, &poll_list, struct poll_req, entry )
1332 {
1333 unsigned int i;
1334
1335 if (req->async != async)
1336 continue;
1337
1338 for (i = 0; i < req->count; i++)
1339 {
1340 struct sock *sock = req->sockets[i].sock;
1341
1342 if (sock->main_poll == req)
1343 sock->main_poll = NULL;
1344 }
1345 }
1346
1347 async_terminate( async, STATUS_CANCELLED );
1348 }
1349
1350 static void sock_queue_async( struct fd *fd, struct async *async, int type, int count )
1351 {
1352 struct sock *sock = get_fd_user( fd );
1353 struct async_queue *queue;
1354
1355 assert( sock->obj.ops == &sock_ops );
1356
1357 switch (type)
1358 {
1359 case ASYNC_TYPE_READ:
1360 if (sock->rd_shutdown)
1361 {
1362 set_error( STATUS_PIPE_DISCONNECTED );
1363 return;
1364 }
1365 queue = &sock->read_q;
1366 break;
1367
1368 case ASYNC_TYPE_WRITE:
1369 if (sock->wr_shutdown)
1370 {
1371 set_error( STATUS_PIPE_DISCONNECTED );
1372 return;
1373 }
1374 queue = &sock->write_q;
1375 break;
1376
1377 default:
1378 set_error( STATUS_INVALID_PARAMETER );
1379 return;
1380 }
1381
1382 if (sock->state != SOCK_CONNECTED)
1383 {
1384 set_error( STATUS_PIPE_DISCONNECTED );
1385 return;
1386 }
1387
1388 queue_async( queue, async );
1389 sock_reselect( sock );
1390
1391 set_error( STATUS_PENDING );
1392 }
1393
1394 static void sock_reselect_async( struct fd *fd, struct async_queue *queue )
1395 {
1396 struct sock *sock = get_fd_user( fd );
1397
1398 if (sock->wr_shutdown_pending && list_empty( &sock->write_q.queue ))
1399 {
1400 shutdown( get_unix_fd( sock->fd ), SHUT_WR );
1401 sock->wr_shutdown_pending = 0;
1402 }
1403
1404 /* Don't reselect the ifchange queue; we always ask for POLLIN.
1405 * Don't reselect an uninitialized socket; we can't call set_fd_events() on
1406 * a pseudo-fd. */
1407 if (queue != &sock->ifchange_q && sock->type)
1408 sock_reselect( sock );
1409 }
1410
1411 static struct fd *sock_get_fd( struct object *obj )
1412 {
1413 struct sock *sock = (struct sock *)obj;
1414 return (struct fd *)grab_object( sock->fd );
1415 }
1416
1417 static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
1418 {
1419 struct sock *sock = (struct sock *)obj;
1420
1421 if (sock->obj.handle_count == 1) /* last handle */
1422 {
1423 struct accept_req *accept_req, *accept_next;
1424 struct poll_req *poll_req, *poll_next;
1425
1426 if (sock->accept_recv_req)
1427 async_terminate( sock->accept_recv_req->async, STATUS_CANCELLED );
1428
1429 LIST_FOR_EACH_ENTRY_SAFE( accept_req, accept_next, &sock->accept_list, struct accept_req, entry )
1430 async_terminate( accept_req->async, STATUS_CANCELLED );
1431
1432 if (sock->connect_req)
1433 async_terminate( sock->connect_req->async, STATUS_CANCELLED );
1434
1435 LIST_FOR_EACH_ENTRY_SAFE( poll_req, poll_next, &poll_list, struct poll_req, entry )
1436 {
1437 struct iosb *iosb = poll_req->iosb;
1438 BOOL signaled = FALSE;
1439 unsigned int i;
1440
1441 if (iosb->status != STATUS_PENDING) continue;
1442
1443 for (i = 0; i < poll_req->count; ++i)
1444 {
1445 if (poll_req->sockets[i].sock == sock)
1446 {
1447 signaled = TRUE;
1448 poll_req->sockets[i].flags = AFD_POLL_CLOSE;
1449 poll_req->sockets[i].status = 0;
1450 }
1451 }
1452
1453 if (signaled) complete_async_poll( poll_req, STATUS_SUCCESS );
1454 }
1455 }
1456
1457 return 1;
1458 }
1459
1460 static void sock_destroy( struct object *obj )
1461 {
1462 struct sock *sock = (struct sock *)obj;
1463
1464 assert( obj->ops == &sock_ops );
1465
1466 /* FIXME: special socket shutdown stuff? */
1467
1468 if ( sock->deferred )
1469 release_object( sock->deferred );
1470
1471 async_wake_up( &sock->ifchange_q, STATUS_CANCELLED );
1472 sock_release_ifchange( sock );
1473 free_async_queue( &sock->read_q );
1474 free_async_queue( &sock->write_q );
1475 free_async_queue( &sock->ifchange_q );
1476 free_async_queue( &sock->accept_q );
1477 free_async_queue( &sock->connect_q );
1478 free_async_queue( &sock->poll_q );
1479 if (sock->event) release_object( sock->event );
1480 if (sock->fd)
1481 {
1482 /* shut the socket down to force pending poll() calls in the client to return */
1483 shutdown( get_unix_fd(sock->fd), SHUT_RDWR );
1484 release_object( sock->fd );
1485 }
1486 }
1487
1488 static struct sock *create_socket(void)
1489 {
1490 struct sock *sock;
1491
1492 if (!(sock = alloc_object( &sock_ops ))) return NULL;
1493 sock->fd = NULL;
1494 sock->state = SOCK_UNCONNECTED;
1495 sock->mask = 0;
1496 sock->pending_events = 0;
1497 sock->reported_events = 0;
1498 sock->flags = 0;
1499 sock->proto = 0;
1500 sock->type = 0;
1501 sock->family = 0;
1502 sock->event = NULL;
1503 sock->window = 0;
1504 sock->message = 0;
1505 sock->wparam = 0;
1506 sock->connect_time = 0;
1507 sock->deferred = NULL;
1508 sock->ifchange_obj = NULL;
1509 sock->accept_recv_req = NULL;
1510 sock->connect_req = NULL;
1511 sock->main_poll = NULL;
1512 memset( &sock->addr, 0, sizeof(sock->addr) );
1513 sock->addr_len = 0;
1514 sock->rd_shutdown = 0;
1515 sock->wr_shutdown = 0;
1516 sock->wr_shutdown_pending = 0;
1517 sock->hangup = 0;
1518 sock->aborted = 0;
1519 sock->nonblocking = 0;
1520 sock->bound = 0;
1521 sock->rcvbuf = 0;
1522 sock->sndbuf = 0;
1523 sock->rcvtimeo = 0;
1524 sock->sndtimeo = 0;
1525 init_async_queue( &sock->read_q );
1526 init_async_queue( &sock->write_q );
1527 init_async_queue( &sock->ifchange_q );
1528 init_async_queue( &sock->accept_q );
1529 init_async_queue( &sock->connect_q );
1530 init_async_queue( &sock->poll_q );
1531 memset( sock->errors, 0, sizeof(sock->errors) );
1532 list_init( &sock->accept_list );
1533 return sock;
1534 }
1535
1536 static int get_unix_family( int family )
1537 {
1538 switch (family)
1539 {
1540 case WS_AF_INET: return AF_INET;
1541 case WS_AF_INET6: return AF_INET6;
1542 #ifdef HAS_IPX
1543 case WS_AF_IPX: return AF_IPX;
1544 #endif
1545 #ifdef AF_IRDA
1546 case WS_AF_IRDA: return AF_IRDA;
1547 #endif
1548 case WS_AF_UNSPEC: return AF_UNSPEC;
1549 default: return -1;
1550 }
1551 }
1552
1553 static int get_unix_type( int type )
1554 {
1555 switch (type)
1556 {
1557 case WS_SOCK_DGRAM: return SOCK_DGRAM;
1558 case WS_SOCK_RAW: return SOCK_RAW;
1559 case WS_SOCK_STREAM: return SOCK_STREAM;
1560 default: return -1;
1561 }
1562 }
1563
1564 static int get_unix_protocol( int protocol )
1565 {
1566 if (protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
1567 return protocol;
1568
1569 switch (protocol)
1570 {
1571 case WS_IPPROTO_ICMP: return IPPROTO_ICMP;
1572 case WS_IPPROTO_IGMP: return IPPROTO_IGMP;
1573 case WS_IPPROTO_IP: return IPPROTO_IP;
1574 case WS_IPPROTO_IPV4: return IPPROTO_IPIP;
1575 case WS_IPPROTO_IPV6: return IPPROTO_IPV6;
1576 case WS_IPPROTO_RAW: return IPPROTO_RAW;
1577 case WS_IPPROTO_TCP: return IPPROTO_TCP;
1578 case WS_IPPROTO_UDP: return IPPROTO_UDP;
1579 default: return -1;
1580 }
1581 }
1582
1583 static void set_dont_fragment( int fd, int level, int value )
1584 {
1585 int optname;
1586
1587 if (level == IPPROTO_IP)
1588 {
1589 #ifdef IP_DONTFRAG
1590 optname = IP_DONTFRAG;
1591 #elif defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) && defined(IP_PMTUDISC_DONT)
1592 optname = IP_MTU_DISCOVER;
1593 value = value ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
1594 #else
1595 return;
1596 #endif
1597 }
1598 else
1599 {
1600 #ifdef IPV6_DONTFRAG
1601 optname = IPV6_DONTFRAG;
1602 #elif defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) && defined(IPV6_PMTUDISC_DONT)
1603 optname = IPV6_MTU_DISCOVER;
1604 value = value ? IPV6_PMTUDISC_DO : IPV6_PMTUDISC_DONT;
1605 #else
1606 return;
1607 #endif
1608 }
1609
1610 setsockopt( fd, level, optname, &value, sizeof(value) );
1611 }
1612
1613 static int init_socket( struct sock *sock, int family, int type, int protocol, unsigned int flags )
1614 {
1615 unsigned int options = 0;
1616 int sockfd, unix_type, unix_family, unix_protocol, value;
1617 socklen_t len;
1618
1619 unix_family = get_unix_family( family );
1620 unix_type = get_unix_type( type );
1621 unix_protocol = get_unix_protocol( protocol );
1622
1623 if (unix_protocol < 0)
1624 {
1625 if (type && unix_type < 0)
1626 set_win32_error( WSAESOCKTNOSUPPORT );
1627 else
1628 set_win32_error( WSAEPROTONOSUPPORT );
1629 return -1;
1630 }
1631 if (unix_family < 0)
1632 {
1633 if (family >= 0 && unix_type < 0)
1634 set_win32_error( WSAESOCKTNOSUPPORT );
1635 else
1636 set_win32_error( WSAEAFNOSUPPORT );
1637 return -1;
1638 }
1639
1640 sockfd = socket( unix_family, unix_type, unix_protocol );
1641 if (sockfd == -1)
1642 {
1643 if (errno == EINVAL) set_win32_error( WSAESOCKTNOSUPPORT );
1644 else set_win32_error( sock_get_error( errno ));
1645 return -1;
1646 }
1647 fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
1648
1649 if (family == WS_AF_IPX && protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
1650 {
1651 #ifdef HAS_IPX
1652 int ipx_type = protocol - WS_NSPROTO_IPX;
1653
1654 #ifdef SOL_IPX
1655 setsockopt( sockfd, SOL_IPX, IPX_TYPE, &ipx_type, sizeof(ipx_type) );
1656 #else
1657 struct ipx val;
1658 /* Should we retrieve val using a getsockopt call and then
1659 * set the modified one? */
1660 val.ipx_pt = ipx_type;
1661 setsockopt( sockfd, 0, SO_DEFAULT_HEADERS, &val, sizeof(val) );
1662 #endif
1663 #endif
1664 }
1665
1666 if (unix_family == AF_INET || unix_family == AF_INET6)
1667 {
1668 /* ensure IP_DONTFRAGMENT is disabled for SOCK_DGRAM and SOCK_RAW, enabled for SOCK_STREAM */
1669 if (unix_type == SOCK_DGRAM || unix_type == SOCK_RAW) /* in Linux the global default can be enabled */
1670 set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, FALSE );
1671 else if (unix_type == SOCK_STREAM)
1672 set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, TRUE );
1673 }
1674
1675 #ifdef IPV6_V6ONLY
1676 if (unix_family == AF_INET6)
1677 {
1678 static const int enable = 1;
1679 setsockopt( sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable) );
1680 }
1681 #endif
1682
1683 len = sizeof(value);
1684 if (!getsockopt( sockfd, SOL_SOCKET, SO_RCVBUF, &value, &len ))
1685 sock->rcvbuf = value;
1686
1687 len = sizeof(value);
1688 if (!getsockopt( sockfd, SOL_SOCKET, SO_SNDBUF, &value, &len ))
1689 sock->sndbuf = value;
1690
1691 sock->state = (type == WS_SOCK_STREAM ? SOCK_UNCONNECTED : SOCK_CONNECTIONLESS);
1692 sock->flags = flags;
1693 sock->proto = protocol;
1694 sock->type = type;
1695 sock->family = family;
1696
1697 if (sock->fd)
1698 {
1699 options = get_fd_options( sock->fd );
1700 release_object( sock->fd );
1701 }
1702
1703 if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj, options )))
1704 {
1705 return -1;
1706 }
1707
1708 /* We can't immediately allow caching for a connection-mode socket, since it
1709 * might be accepted into (changing the underlying fd object.) */
1710 if (sock->type != WS_SOCK_STREAM) allow_fd_caching( sock->fd );
1711
1712 return 0;
1713 }
1714
1715 /* accepts a socket and inits it */
1716 static int accept_new_fd( struct sock *sock )
1717 {
1718
1719 /* Try to accept(2). We can't be safe that this an already connected socket
1720 * or that accept() is allowed on it. In those cases we will get -1/errno
1721 * return.
1722 */
1723 struct sockaddr saddr;
1724 socklen_t slen = sizeof(saddr);
1725 int acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen );
1726 if (acceptfd != -1)
1727 fcntl( acceptfd, F_SETFL, O_NONBLOCK );
1728 else
1729 set_error( sock_get_ntstatus( errno ));
1730 return acceptfd;
1731 }
1732
1733 /* accept a socket (creates a new fd) */
1734 static struct sock *accept_socket( struct sock *sock )
1735 {
1736 struct sock *acceptsock;
1737 int acceptfd;
1738
1739 if (get_unix_fd( sock->fd ) == -1) return NULL;
1740
1741 if ( sock->deferred )
1742 {
1743 acceptsock = sock->deferred;
1744 sock->deferred = NULL;
1745 }
1746 else
1747 {
1748 union unix_sockaddr unix_addr;
1749 socklen_t unix_len;
1750
1751 if ((acceptfd = accept_new_fd( sock )) == -1) return NULL;
1752 if (!(acceptsock = create_socket()))
1753 {
1754 close( acceptfd );
1755 return NULL;
1756 }
1757
1758 /* newly created socket gets the same properties of the listening socket */
1759 acceptsock->state = SOCK_CONNECTED;
1760 acceptsock->bound = 1;
1761 acceptsock->nonblocking = sock->nonblocking;
1762 acceptsock->mask = sock->mask;
1763 acceptsock->proto = sock->proto;
1764 acceptsock->type = sock->type;
1765 acceptsock->family = sock->family;
1766 acceptsock->window = sock->window;
1767 acceptsock->message = sock->message;
1768 acceptsock->connect_time = current_time;
1769 if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
1770 acceptsock->flags = sock->flags;
1771 if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
1772 get_fd_options( sock->fd ) )))
1773 {
1774 release_object( acceptsock );
1775 return NULL;
1776 }
1777 unix_len = sizeof(unix_addr);
1778 if (!getsockname( acceptfd, &unix_addr.addr, &unix_len ))
1779 acceptsock->addr_len = sockaddr_from_unix( &unix_addr, &acceptsock->addr.addr, sizeof(acceptsock->addr) );
1780 }
1781 clear_error();
1782 sock->pending_events &= ~AFD_POLL_ACCEPT;
1783 sock->reported_events &= ~AFD_POLL_ACCEPT;
1784 sock_reselect( sock );
1785 return acceptsock;
1786 }
1787
1788 static int accept_into_socket( struct sock *sock, struct sock *acceptsock )
1789 {
1790 union unix_sockaddr unix_addr;
1791 socklen_t unix_len;
1792 int acceptfd;
1793 struct fd *newfd;
1794
1795 if (get_unix_fd( sock->fd ) == -1) return FALSE;
1796
1797 if ( sock->deferred )
1798 {
1799 newfd = dup_fd_object( sock->deferred->fd, 0, 0,
1800 get_fd_options( acceptsock->fd ) );
1801 if ( !newfd )
1802 return FALSE;
1803
1804 set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj );
1805
1806 release_object( sock->deferred );
1807 sock->deferred = NULL;
1808 }
1809 else
1810 {
1811 if ((acceptfd = accept_new_fd( sock )) == -1)
1812 return FALSE;
1813
1814 if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
1815 get_fd_options( acceptsock->fd ) )))
1816 return FALSE;
1817 }
1818
1819 acceptsock->state = SOCK_CONNECTED;
1820 acceptsock->pending_events = 0;
1821 acceptsock->reported_events = 0;
1822 acceptsock->proto = sock->proto;
1823 acceptsock->type = sock->type;
1824 acceptsock->family = sock->family;
1825 acceptsock->wparam = 0;
1826 acceptsock->deferred = NULL;
1827 acceptsock->connect_time = current_time;
1828 fd_copy_completion( acceptsock->fd, newfd );
1829 release_object( acceptsock->fd );
1830 acceptsock->fd = newfd;
1831
1832 unix_len = sizeof(unix_addr);
1833 if (!getsockname( get_unix_fd( newfd ), &unix_addr.addr, &unix_len ))
1834 acceptsock->addr_len = sockaddr_from_unix( &unix_addr, &acceptsock->addr.addr, sizeof(acceptsock->addr) );
1835
1836 clear_error();
1837 sock->pending_events &= ~AFD_POLL_ACCEPT;
1838 sock->reported_events &= ~AFD_POLL_ACCEPT;
1839 sock_reselect( sock );
1840
1841 return TRUE;
1842 }
1843
1844 #ifdef IP_BOUND_IF
1845
1846 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
1847 {
1848 static const int enable = 1;
1849 unsigned int index;
1850
1851 if (!(index = if_nametoindex( name )))
1852 return -1;
1853
1854 if (setsockopt( fd, IPPROTO_IP, IP_BOUND_IF, &index, sizeof(index) ))
1855 return -1;
1856
1857 return setsockopt( fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable) );
1858 }
1859
1860 #elif defined(IP_UNICAST_IF) && defined(SO_ATTACH_FILTER) && defined(SO_BINDTODEVICE)
1861
1862 struct interface_filter
1863 {
1864 struct sock_filter iface_memaddr;
1865 struct sock_filter iface_rule;
1866 struct sock_filter ip_memaddr;
1867 struct sock_filter ip_rule;
1868 struct sock_filter return_keep;
1869 struct sock_filter return_dump;
1870 };
1871 # define FILTER_JUMP_DUMP(here) (u_char)(offsetof(struct interface_filter, return_dump) \
1872 -offsetof(struct interface_filter, here)-sizeof(struct sock_filter)) \
1873 /sizeof(struct sock_filter)
1874 # define FILTER_JUMP_KEEP(here) (u_char)(offsetof(struct interface_filter, return_keep) \
1875 -offsetof(struct interface_filter, here)-sizeof(struct sock_filter)) \
1876 /sizeof(struct sock_filter)
1877 # define FILTER_JUMP_NEXT() (u_char)(0)
1878 # define SKF_NET_DESTIP 16 /* offset in the network header to the destination IP */
1879 static struct interface_filter generic_interface_filter =
1880 {
1881 /* This filter rule allows incoming packets on the specified interface, which works for all
1882 * remotely generated packets and for locally generated broadcast packets. */
1883 BPF_STMT(BPF_LD+BPF_W+BPF_ABS, SKF_AD_OFF+SKF_AD_IFINDEX),
1884 BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0xdeadbeef, FILTER_JUMP_KEEP(iface_rule), FILTER_JUMP_NEXT()),
1885 /* This rule allows locally generated packets targeted at the specific IP address of the chosen
1886 * adapter (local packets not destined for the broadcast address do not have IFINDEX set) */
1887 BPF_STMT(BPF_LD+BPF_W+BPF_ABS, SKF_NET_OFF+SKF_NET_DESTIP),
1888 BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0xdeadbeef, FILTER_JUMP_KEEP(ip_rule), FILTER_JUMP_DUMP(ip_rule)),
1889 BPF_STMT(BPF_RET+BPF_K, (u_int)-1), /* keep packet */
1890 BPF_STMT(BPF_RET+BPF_K, 0) /* dump packet */
1891 };
1892
1893 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
1894 {
1895 struct interface_filter specific_interface_filter;
1896 struct sock_fprog filter_prog;
1897 static const int enable = 1;
1898 unsigned int index;
1899 in_addr_t ifindex;
1900
1901 if (!setsockopt( fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen( name ) + 1 ))
1902 return 0;
1903
1904 /* SO_BINDTODEVICE requires NET_CAP_RAW until Linux 5.7. */
1905 if (debug_level)
1906 fprintf( stderr, "setsockopt SO_BINDTODEVICE fd %d, name %s failed: %s, falling back to SO_REUSE_ADDR\n",
1907 fd, name, strerror( errno ));
1908
1909 if (!(index = if_nametoindex( name )))
1910 return -1;
1911
1912 ifindex = htonl( index );
1913 if (setsockopt( fd, IPPROTO_IP, IP_UNICAST_IF, &ifindex, sizeof(ifindex) ) < 0)
1914 return -1;
1915
1916 specific_interface_filter = generic_interface_filter;
1917 specific_interface_filter.iface_rule.k = index;
1918 specific_interface_filter.ip_rule.k = htonl( bind_addr );
1919 filter_prog.len = sizeof(generic_interface_filter) / sizeof(struct sock_filter);
1920 filter_prog.filter = (struct sock_filter *)&specific_interface_filter;
1921 if (setsockopt( fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter_prog, sizeof(filter_prog) ))
1922 return -1;
1923
1924 return setsockopt( fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable) );
1925 }
1926
1927 #else
1928
1929 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
1930 {
1931 errno = EOPNOTSUPP;
1932 return -1;
1933 }
1934
1935 #endif /* LINUX_BOUND_IF */
1936
1937 /* Take bind() calls on any name corresponding to a local network adapter and
1938 * restrict the given socket to operating only on the specified interface. This
1939 * restriction consists of two components:
1940 * 1) An outgoing packet restriction suggesting the egress interface for all
1941 * packets.
1942 * 2) An incoming packet restriction dropping packets not meant for the
1943 * interface.
1944 * If the function succeeds in placing these restrictions, then the name for the
1945 * bind() may safely be changed to INADDR_ANY, permitting the transmission and
1946 * receipt of broadcast packets on the socket. This behavior is only relevant to
1947 * UDP sockets and is needed for applications that expect to be able to receive
1948 * broadcast packets on a socket that is bound to a specific network interface.
1949 */
1950 static int bind_to_interface( struct sock *sock, const struct sockaddr_in *addr )
1951 {
1952 in_addr_t bind_addr = addr->sin_addr.s_addr;
1953 struct ifaddrs *ifaddrs, *ifaddr;
1954 int fd = get_unix_fd( sock->fd );
1955 int err = 0;
1956
1957 if (bind_addr == htonl( INADDR_ANY ) || bind_addr == htonl( INADDR_LOOPBACK ))
1958 return 0;
1959 if (sock->type != WS_SOCK_DGRAM)
1960 return 0;
1961
1962 if (getifaddrs( &ifaddrs ) < 0) return 0;
1963
1964 for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next)
1965 {
1966 if (ifaddr->ifa_addr && ifaddr->ifa_addr->sa_family == AF_INET
1967 && ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr == bind_addr)
1968 {
1969 if ((err = bind_to_iface_name( fd, bind_addr, ifaddr->ifa_name )) < 0)
1970 {
1971 if (debug_level)
1972 fprintf( stderr, "failed to bind to interface: %s\n", strerror( errno ) );
1973 }
1974 break;
1975 }
1976 }
1977 freeifaddrs( ifaddrs );
1978 return !err;
1979 }
1980
1981 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
1982 static unsigned int get_ipv6_interface_index( const struct in6_addr *addr )
1983 {
1984 struct ifaddrs *ifaddrs, *ifaddr;
1985
1986 if (getifaddrs( &ifaddrs ) < 0) return 0;
1987
1988 for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next)
1989 {
1990 if (ifaddr->ifa_addr && ifaddr->ifa_addr->sa_family == AF_INET6
1991 && !memcmp( &((struct sockaddr_in6 *)ifaddr->ifa_addr)->sin6_addr, addr, sizeof(*addr) ))
1992 {
1993 unsigned int index = if_nametoindex( ifaddr->ifa_name );
1994
1995 if (!index)
1996 {
1997 if (debug_level)
1998 fprintf( stderr, "Unable to look up interface index for %s: %s\n",
1999 ifaddr->ifa_name, strerror( errno ) );
2000 continue;
2001 }
2002
2003 freeifaddrs( ifaddrs );
2004 return index;
2005 }
2006 }
2007
2008 freeifaddrs( ifaddrs );
2009 return 0;
2010 }
2011 #endif
2012
2013 /* return an errno value mapped to a WSA error */
2014 static unsigned int sock_get_error( int err )
2015 {
2016 switch (err)
2017 {
2018 case EINTR: return WSAEINTR;
2019 case EBADF: return WSAEBADF;
2020 case EPERM:
2021 case EACCES: return WSAEACCES;
2022 case EFAULT: return WSAEFAULT;
2023 case EINVAL: return WSAEINVAL;
2024 case EMFILE: return WSAEMFILE;
2025 case EINPROGRESS:
2026 case EWOULDBLOCK: return WSAEWOULDBLOCK;
2027 case EALREADY: return WSAEALREADY;
2028 case ENOTSOCK: return WSAENOTSOCK;
2029 case EDESTADDRREQ: return WSAEDESTADDRREQ;
2030 case EMSGSIZE: return WSAEMSGSIZE;
2031 case EPROTOTYPE: return WSAEPROTOTYPE;
2032 case ENOPROTOOPT: return WSAENOPROTOOPT;
2033 case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT;
2034 case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT;
2035 case EOPNOTSUPP: return WSAEOPNOTSUPP;
2036 case EPFNOSUPPORT: return WSAEPFNOSUPPORT;
2037 case EAFNOSUPPORT: return WSAEAFNOSUPPORT;
2038 case EADDRINUSE: return WSAEADDRINUSE;
2039 case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL;
2040 case ENETDOWN: return WSAENETDOWN;
2041 case ENETUNREACH: return WSAENETUNREACH;
2042 case ENETRESET: return WSAENETRESET;
2043 case ECONNABORTED: return WSAECONNABORTED;
2044 case EPIPE:
2045 case ECONNRESET: return WSAECONNRESET;
2046 case ENOBUFS: return WSAENOBUFS;
2047 case EISCONN: return WSAEISCONN;
2048 case ENOTCONN: return WSAENOTCONN;
2049 case ESHUTDOWN: return WSAESHUTDOWN;
2050 case ETOOMANYREFS: return WSAETOOMANYREFS;
2051 case ETIMEDOUT: return WSAETIMEDOUT;
2052 case ECONNREFUSED: return WSAECONNREFUSED;
2053 case ELOOP: return WSAELOOP;
2054 case ENAMETOOLONG: return WSAENAMETOOLONG;
2055 case EHOSTDOWN: return WSAEHOSTDOWN;
2056 case EHOSTUNREACH: return WSAEHOSTUNREACH;
2057 case ENOTEMPTY: return WSAENOTEMPTY;
2058 #ifdef EPROCLIM
2059 case EPROCLIM: return WSAEPROCLIM;
2060 #endif
2061 #ifdef EUSERS
2062 case EUSERS: return WSAEUSERS;
2063 #endif
2064 #ifdef EDQUOT
2065 case EDQUOT: return WSAEDQUOT;
2066 #endif
2067 #ifdef ESTALE
2068 case ESTALE: return WSAESTALE;
2069 #endif
2070 #ifdef EREMOTE
2071 case EREMOTE: return WSAEREMOTE;
2072 #endif
2073
2074 case 0: return 0;
2075 default:
2076 errno = err;
2077 perror("wineserver: sock_get_error() can't map error");
2078 return WSAEFAULT;
2079 }
2080 }
2081
2082 static int sock_get_ntstatus( int err )
2083 {
2084 switch ( err )
2085 {
2086 case EBADF: return STATUS_INVALID_HANDLE;
2087 case EBUSY: return STATUS_DEVICE_BUSY;
2088 case EPERM:
2089 case EACCES: return STATUS_ACCESS_DENIED;
2090 case EFAULT: return STATUS_ACCESS_VIOLATION;
2091 case EINVAL: return STATUS_INVALID_PARAMETER;
2092 case ENFILE:
2093 case EMFILE: return STATUS_TOO_MANY_OPENED_FILES;
2094 case EINPROGRESS:
2095 case EWOULDBLOCK: return STATUS_DEVICE_NOT_READY;
2096 case EALREADY: return STATUS_NETWORK_BUSY;
2097 case ENOTSOCK: return STATUS_OBJECT_TYPE_MISMATCH;
2098 case EDESTADDRREQ: return STATUS_INVALID_PARAMETER;
2099 case EMSGSIZE: return STATUS_BUFFER_OVERFLOW;
2100 case EPROTONOSUPPORT:
2101 case ESOCKTNOSUPPORT:
2102 case EPFNOSUPPORT:
2103 case EAFNOSUPPORT:
2104 case EPROTOTYPE: return STATUS_NOT_SUPPORTED;
2105 case ENOPROTOOPT: return STATUS_INVALID_PARAMETER;
2106 case EOPNOTSUPP: return STATUS_NOT_SUPPORTED;
2107 case EADDRINUSE: return STATUS_SHARING_VIOLATION;
2108 /* Linux returns ENODEV when specifying an invalid sin6_scope_id;
2109 * Windows returns STATUS_INVALID_ADDRESS_COMPONENT */
2110 case ENODEV:
2111 case EADDRNOTAVAIL: return STATUS_INVALID_ADDRESS_COMPONENT;
2112 case ECONNREFUSED: return STATUS_CONNECTION_REFUSED;
2113 case ESHUTDOWN: return STATUS_PIPE_DISCONNECTED;
2114 case ENOTCONN: return STATUS_INVALID_CONNECTION;
2115 case ETIMEDOUT: return STATUS_IO_TIMEOUT;
2116 case ENETUNREACH: return STATUS_NETWORK_UNREACHABLE;
2117 case EHOSTUNREACH: return STATUS_HOST_UNREACHABLE;
2118 case ENETDOWN: return STATUS_NETWORK_BUSY;
2119 case EPIPE:
2120 case ECONNRESET: return STATUS_CONNECTION_RESET;
2121 case ECONNABORTED: return STATUS_CONNECTION_ABORTED;
2122 case EISCONN: return STATUS_CONNECTION_ACTIVE;
2123
2124 case 0: return STATUS_SUCCESS;
2125 default:
2126 errno = err;
2127 perror("wineserver: sock_get_ntstatus() can't map error");
2128 return STATUS_UNSUCCESSFUL;
2129 }
2130 }
2131
2132 static struct accept_req *alloc_accept_req( struct sock *sock, struct sock *acceptsock, struct async *async,
2133 const struct afd_accept_into_params *params )
2134 {
2135 struct accept_req *req = mem_alloc( sizeof(*req) );
2136
2137 if (req)
2138 {
2139 req->async = (struct async *)grab_object( async );
2140 req->iosb = async_get_iosb( async );
2141 req->sock = (struct sock *)grab_object( sock );
2142 req->acceptsock = acceptsock;
2143 if (acceptsock) grab_object( acceptsock );
2144 req->accepted = 0;
2145 req->recv_len = 0;
2146 req->local_len = 0;
2147 if (params)
2148 {
2149 req->recv_len = params->recv_len;
2150 req->local_len = params->local_len;
2151 }
2152 }
2153 return req;
2154 }
2155
2156 static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
2157 {
2158 struct sock *sock = get_fd_user( fd );
2159 int unix_fd;
2160
2161 assert( sock->obj.ops == &sock_ops );
2162
2163 if (code != IOCTL_AFD_WINE_CREATE && (unix_fd = get_unix_fd( fd )) < 0) return;
2164
2165 switch(code)
2166 {
2167 case IOCTL_AFD_WINE_CREATE:
2168 {
2169 const struct afd_create_params *params = get_req_data();
2170
2171 if (get_req_data_size() != sizeof(*params))
2172 {
2173 set_error( STATUS_INVALID_PARAMETER );
2174 return;
2175 }
2176 init_socket( sock, params->family, params->type, params->protocol, params->flags );
2177 return;
2178 }
2179
2180 case IOCTL_AFD_WINE_ACCEPT:
2181 {
2182 struct sock *acceptsock;
2183 obj_handle_t handle;
2184
2185 if (get_reply_max_size() != sizeof(handle))
2186 {
2187 set_error( STATUS_BUFFER_TOO_SMALL );
2188 return;
2189 }
2190
2191 if (!(acceptsock = accept_socket( sock )))
2192 {
2193 struct accept_req *req;
2194
2195 if (sock->nonblocking) return;
2196 if (get_error() != STATUS_DEVICE_NOT_READY) return;
2197
2198 if (!(req = alloc_accept_req( sock, NULL, async, NULL ))) return;
2199 list_add_tail( &sock->accept_list, &req->entry );
2200
2201 async_set_completion_callback( async, free_accept_req, req );
2202 queue_async( &sock->accept_q, async );
2203 sock_reselect( sock );
2204 set_error( STATUS_PENDING );
2205 return;
2206 }
2207 handle = alloc_handle( current->process, &acceptsock->obj,
2208 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
2209 acceptsock->wparam = handle;
2210 sock_reselect( acceptsock );
2211 release_object( acceptsock );
2212 set_reply_data( &handle, sizeof(handle) );
2213 return;
2214 }
2215
2216 case IOCTL_AFD_WINE_ACCEPT_INTO:
2217 {
2218 static const int access = FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES | FILE_READ_DATA;
2219 const struct afd_accept_into_params *params = get_req_data();
2220 struct sock *acceptsock;
2221 unsigned int remote_len;
2222 struct accept_req *req;
2223
2224 if (get_req_data_size() != sizeof(*params) ||
2225 get_reply_max_size() < params->recv_len ||
2226 get_reply_max_size() - params->recv_len < params->local_len)
2227 {
2228 set_error( STATUS_BUFFER_TOO_SMALL );
2229 return;
2230 }
2231
2232 remote_len = get_reply_max_size() - params->recv_len - params->local_len;
2233 if (remote_len < sizeof(int))
2234 {
2235 set_error( STATUS_INVALID_PARAMETER );
2236 return;
2237 }
2238
2239 if (!(acceptsock = (struct sock *)get_handle_obj( current->process, params->accept_handle, access, &sock_ops )))
2240 return;
2241
2242 if (acceptsock->accept_recv_req)
2243 {
2244 release_object( acceptsock );
2245 set_error( STATUS_INVALID_PARAMETER );
2246 return;
2247 }
2248
2249 if (!(req = alloc_accept_req( sock, acceptsock, async, params )))
2250 {
2251 release_object( acceptsock );
2252 return;
2253 }
2254 list_add_tail( &sock->accept_list, &req->entry );
2255 acceptsock->accept_recv_req = req;
2256 release_object( acceptsock );
2257
2258 acceptsock->wparam = params->accept_handle;
2259 async_set_completion_callback( async, free_accept_req, req );
2260 queue_async( &sock->accept_q, async );
2261 sock_reselect( sock );
2262 set_error( STATUS_PENDING );
2263 return;
2264 }
2265
2266 case IOCTL_AFD_LISTEN:
2267 {
2268 const struct afd_listen_params *params = get_req_data();
2269
2270 if (get_req_data_size() < sizeof(*params))
2271 {
2272 set_error( STATUS_INVALID_PARAMETER );
2273 return;
2274 }
2275
2276 if (!sock->bound)
2277 {
2278 set_error( STATUS_INVALID_PARAMETER );
2279 return;
2280 }
2281
2282 if (listen( unix_fd, params->backlog ) < 0)
2283 {
2284 set_error( sock_get_ntstatus( errno ) );
2285 return;
2286 }
2287
2288 sock->state = SOCK_LISTENING;
2289
2290 /* a listening socket can no longer be accepted into */
2291 allow_fd_caching( sock->fd );
2292
2293 /* we may already be selecting for AFD_POLL_ACCEPT */
2294 sock_reselect( sock );
2295 return;
2296 }
2297
2298 case IOCTL_AFD_WINE_CONNECT:
2299 {
2300 const struct afd_connect_params *params = get_req_data();
2301 const struct WS_sockaddr *addr;
2302 union unix_sockaddr unix_addr;
2303 struct connect_req *req;
2304 socklen_t unix_len;
2305 int send_len, ret;
2306
2307 if (get_req_data_size() < sizeof(*params) ||
2308 get_req_data_size() - sizeof(*params) < params->addr_len)
2309 {
2310 set_error( STATUS_BUFFER_TOO_SMALL );
2311 return;
2312 }
2313 send_len = get_req_data_size() - sizeof(*params) - params->addr_len;
2314 addr = (const struct WS_sockaddr *)(params + 1);
2315
2316 if (!params->synchronous && !sock->bound)
2317 {
2318 set_error( STATUS_INVALID_PARAMETER );
2319 return;
2320 }
2321
2322 if (sock->accept_recv_req)
2323 {
2324 set_error( STATUS_INVALID_PARAMETER );
2325 return;
2326 }
2327
2328 if (sock->connect_req)
2329 {
2330 set_error( STATUS_INVALID_PARAMETER );
2331 return;
2332 }
2333
2334 switch (sock->state)
2335 {
2336 case SOCK_LISTENING:
2337 set_error( STATUS_INVALID_PARAMETER );
2338 return;
2339
2340 case SOCK_CONNECTING:
2341 /* FIXME: STATUS_ADDRESS_ALREADY_ASSOCIATED probably isn't right,
2342 * but there's no status code that maps to WSAEALREADY... */
2343 set_error( params->synchronous ? STATUS_ADDRESS_ALREADY_ASSOCIATED : STATUS_INVALID_PARAMETER );
2344 return;
2345
2346 case SOCK_CONNECTED:
2347 set_error( STATUS_CONNECTION_ACTIVE );
2348 return;
2349
2350 case SOCK_UNCONNECTED:
2351 case SOCK_CONNECTIONLESS:
2352 break;
2353 }
2354
2355 unix_len = sockaddr_to_unix( addr, params->addr_len, &unix_addr );
2356 if (!unix_len)
2357 {
2358 set_error( STATUS_INVALID_ADDRESS );
2359 return;
2360 }
2361 if (unix_addr.addr.sa_family == AF_INET && !memcmp( &unix_addr.in.sin_addr, magic_loopback_addr, 4 ))
2362 unix_addr.in.sin_addr.s_addr = htonl( INADDR_LOOPBACK );
2363
2364 ret = connect( unix_fd, &unix_addr.addr, unix_len );
2365 if (ret < 0 && errno != EINPROGRESS)
2366 {
2367 set_error( sock_get_ntstatus( errno ) );
2368 return;
2369 }
2370
2371 /* a connected or connecting socket can no longer be accepted into */
2372 allow_fd_caching( sock->fd );
2373
2374 unix_len = sizeof(unix_addr);
2375 if (!getsockname( unix_fd, &unix_addr.addr, &unix_len ))
2376 sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) );
2377 sock->bound = 1;
2378
2379 if (!ret)
2380 {
2381 sock->state = SOCK_CONNECTED;
2382
2383 if (!send_len) return;
2384 }
2385
2386 sock->state = SOCK_CONNECTING;
2387
2388 if (params->synchronous && sock->nonblocking)
2389 {
2390 sock_reselect( sock );
2391 set_error( STATUS_DEVICE_NOT_READY );
2392 return;
2393 }
2394
2395 if (!(req = mem_alloc( sizeof(*req) )))
2396 return;
2397
2398 req->async = (struct async *)grab_object( async );
2399 req->iosb = async_get_iosb( async );
2400 req->sock = (struct sock *)grab_object( sock );
2401 req->addr_len = params->addr_len;
2402 req->send_len = send_len;
2403 req->send_cursor = 0;
2404
2405 async_set_completion_callback( async, free_connect_req, req );
2406 sock->connect_req = req;
2407 queue_async( &sock->connect_q, async );
2408 sock_reselect( sock );
2409 set_error( STATUS_PENDING );
2410 return;
2411 }
2412
2413 case IOCTL_AFD_WINE_SHUTDOWN:
2414 {
2415 unsigned int how;
2416
2417 if (get_req_data_size() < sizeof(int))
2418 {
2419 set_error( STATUS_BUFFER_TOO_SMALL );
2420 return;
2421 }
2422 how = *(int *)get_req_data();
2423
2424 if (how > SD_BOTH)
2425 {
2426 set_error( STATUS_INVALID_PARAMETER );
2427 return;
2428 }
2429
2430 if (sock->state != SOCK_CONNECTED && sock->state != SOCK_CONNECTIONLESS)
2431 {
2432 set_error( STATUS_INVALID_CONNECTION );
2433 return;
2434 }
2435
2436 if (how != SD_SEND)
2437 {
2438 sock->rd_shutdown = 1;
2439 }
2440 if (how != SD_RECEIVE)
2441 {
2442 sock->wr_shutdown = 1;
2443 if (list_empty( &sock->write_q.queue ))
2444 shutdown( unix_fd, SHUT_WR );
2445 else
2446 sock->wr_shutdown_pending = 1;
2447 }
2448
2449 if (how == SD_BOTH)
2450 {
2451 if (sock->event) release_object( sock->event );
2452 sock->event = NULL;
2453 sock->window = 0;
2454 sock->mask = 0;
2455 sock->nonblocking = 1;
2456 }
2457
2458 sock_reselect( sock );
2459 return;
2460 }
2461
2462 case IOCTL_AFD_WINE_ADDRESS_LIST_CHANGE:
2463 {
2464 int force_async;
2465
2466 if (get_req_data_size() < sizeof(int))
2467 {
2468 set_error( STATUS_BUFFER_TOO_SMALL );
2469 return;
2470 }
2471 force_async = *(int *)get_req_data();
2472
2473 if (sock->nonblocking && !force_async)
2474 {
2475 set_error( STATUS_DEVICE_NOT_READY );
2476 return;
2477 }
2478 if (!sock_get_ifchange( sock )) return;
2479 queue_async( &sock->ifchange_q, async );
2480 set_error( STATUS_PENDING );
2481 return;
2482 }
2483
2484 case IOCTL_AFD_WINE_FIONBIO:
2485 if (get_req_data_size() < sizeof(int))
2486 {
2487 set_error( STATUS_BUFFER_TOO_SMALL );
2488 return;
2489 }
2490 if (*(int *)get_req_data())
2491 {
2492 sock->nonblocking = 1;
2493 }
2494 else
2495 {
2496 if (sock->mask)
2497 {
2498 set_error( STATUS_INVALID_PARAMETER );
2499 return;
2500 }
2501 sock->nonblocking = 0;
2502 }
2503 return;
2504
2505 case IOCTL_AFD_GET_EVENTS:
2506 {
2507 struct afd_get_events_params params = {0};
2508 unsigned int i;
2509
2510 if (get_reply_max_size() < sizeof(params))
2511 {
2512 set_error( STATUS_INVALID_PARAMETER );
2513 return;
2514 }
2515
2516 params.flags = sock->pending_events & sock->mask;
2517 for (i = 0; i < ARRAY_SIZE( params.status ); ++i)
2518 params.status[i] = sock_get_ntstatus( sock->errors[i] );
2519
2520 sock->pending_events = 0;
2521 sock_reselect( sock );
2522
2523 set_reply_data( &params, sizeof(params) );
2524 return;
2525 }
2526
2527 case IOCTL_AFD_EVENT_SELECT:
2528 {
2529 struct event *event = NULL;
2530 obj_handle_t event_handle;
2531 int mask;
2532
2533 set_async_pending( async );
2534
2535 if (is_machine_64bit( current->process->machine ))
2536 {
2537 const struct afd_event_select_params_64 *params = get_req_data();
2538
2539 if (get_req_data_size() < sizeof(*params))
2540 {
2541 set_error( STATUS_INVALID_PARAMETER );
2542 return;
2543 }
2544
2545 event_handle = params->event;
2546 mask = params->mask;
2547 }
2548 else
2549 {
2550 const struct afd_event_select_params_32 *params = get_req_data();
2551
2552 if (get_req_data_size() < sizeof(*params))
2553 {
2554 set_error( STATUS_INVALID_PARAMETER );
2555 return;
2556 }
2557
2558 event_handle = params->event;
2559 mask = params->mask;
2560 }
2561
2562 if ((event_handle || mask) &&
2563 !(event = get_event_obj( current->process, event_handle, EVENT_MODIFY_STATE )))
2564 {
2565 set_error( STATUS_INVALID_PARAMETER );
2566 return;
2567 }
2568
2569 if (sock->event) release_object( sock->event );
2570 sock->event = event;
2571 sock->mask = mask;
2572 sock->window = 0;
2573 sock->message = 0;
2574 sock->wparam = 0;
2575 sock->nonblocking = 1;
2576
2577 sock_reselect( sock );
2578 /* Explicitly wake the socket up if the mask causes it to become
2579 * signaled. Note that reselecting isn't enough, since we might already
2580 * have had events recorded in sock->reported_events and we don't want
2581 * to select for them again. */
2582 sock_wake_up( sock );
2583
2584 return;
2585 }
2586
2587 case IOCTL_AFD_WINE_MESSAGE_SELECT:
2588 {
2589 const struct afd_message_select_params *params = get_req_data();
2590
2591 if (get_req_data_size() < sizeof(params))
2592 {
2593 set_error( STATUS_BUFFER_TOO_SMALL );
2594 return;
2595 }
2596
2597 if (sock->event) release_object( sock->event );
2598
2599 if (params->window)
2600 {
2601 sock->pending_events = 0;
2602 sock->reported_events = 0;
2603 }
2604 sock->event = NULL;
2605 sock->mask = params->mask;
2606 sock->window = params->window;
2607 sock->message = params->message;
2608 sock->wparam = params->handle;
2609 sock->nonblocking = 1;
2610
2611 sock_reselect( sock );
2612
2613 return;
2614 }
2615
2616 case IOCTL_AFD_BIND:
2617 {
2618 const struct afd_bind_params *params = get_req_data();
2619 union unix_sockaddr unix_addr, bind_addr;
2620 data_size_t in_size;
2621 socklen_t unix_len;
2622
2623 /* the ioctl is METHOD_NEITHER, so ntdll gives us the output buffer as
2624 * input */
2625 if (get_req_data_size() < get_reply_max_size())
2626 {
2627 set_error( STATUS_BUFFER_TOO_SMALL );
2628 return;
2629 }
2630 in_size = get_req_data_size() - get_reply_max_size();
2631 if (in_size < offsetof(struct afd_bind_params, addr.sa_data)
2632 || get_reply_max_size() < in_size - sizeof(int))
2633 {
2634 set_error( STATUS_INVALID_PARAMETER );
2635 return;
2636 }
2637
2638 if (sock->bound)
2639 {
2640 set_error( STATUS_ADDRESS_ALREADY_ASSOCIATED );
2641 return;
2642 }
2643
2644 unix_len = sockaddr_to_unix( &params->addr, in_size - sizeof(int), &unix_addr );
2645 if (!unix_len)
2646 {
2647 set_error( STATUS_INVALID_ADDRESS );
2648 return;
2649 }
2650 bind_addr = unix_addr;
2651
2652 if (unix_addr.addr.sa_family == AF_INET)
2653 {
2654 if (!memcmp( &unix_addr.in.sin_addr, magic_loopback_addr, 4 )
2655 || bind_to_interface( sock, &unix_addr.in ))
2656 bind_addr.in.sin_addr.s_addr = htonl( INADDR_ANY );
2657 }
2658 else if (unix_addr.addr.sa_family == AF_INET6)
2659 {
2660 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
2661 /* Windows allows specifying zero to use the default scope. Linux
2662 * interprets it as an interface index and requires that it be
2663 * nonzero. */
2664 if (!unix_addr.in6.sin6_scope_id)
2665 bind_addr.in6.sin6_scope_id = get_ipv6_interface_index( &unix_addr.in6.sin6_addr );
2666 #endif
2667 }
2668
2669 set_async_pending( async );
2670
2671 if (bind( unix_fd, &bind_addr.addr, unix_len ) < 0)
2672 {
2673 if (errno == EADDRINUSE)
2674 {
2675 int reuse;
2676 socklen_t len = sizeof(reuse);
2677
2678 if (!getsockopt( unix_fd, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse, &len ) && reuse)
2679 errno = EACCES;
2680 }
2681
2682 set_error( sock_get_ntstatus( errno ) );
2683 return;
2684 }
2685
2686 sock->bound = 1;
2687
2688 unix_len = sizeof(bind_addr);
2689 if (!getsockname( unix_fd, &bind_addr.addr, &unix_len ))
2690 {
2691 /* store the interface or magic loopback address instead of the
2692 * actual unix address */
2693 if (bind_addr.addr.sa_family == AF_INET)
2694 bind_addr.in.sin_addr = unix_addr.in.sin_addr;
2695 sock->addr_len = sockaddr_from_unix( &bind_addr, &sock->addr.addr, sizeof(sock->addr) );
2696 }
2697
2698 if (get_reply_max_size() >= sock->addr_len)
2699 set_reply_data( &sock->addr, sock->addr_len );
2700 return;
2701 }
2702
2703 case IOCTL_AFD_GETSOCKNAME:
2704 if (!sock->bound)
2705 {
2706 set_error( STATUS_INVALID_PARAMETER );
2707 return;
2708 }
2709
2710 if (get_reply_max_size() < sock->addr_len)
2711 {
2712 set_error( STATUS_BUFFER_TOO_SMALL );
2713 return;
2714 }
2715
2716 set_reply_data( &sock->addr, sock->addr_len );
2717 return;
2718
2719 case IOCTL_AFD_WINE_DEFER:
2720 {
2721 const obj_handle_t *handle = get_req_data();
2722 struct sock *acceptsock;
2723
2724 if (get_req_data_size() < sizeof(*handle))
2725 {
2726 set_error( STATUS_BUFFER_TOO_SMALL );
2727 return;
2728 }
2729
2730 acceptsock = (struct sock *)get_handle_obj( current->process, *handle, 0, &sock_ops );
2731 if (!acceptsock) return;
2732
2733 sock->deferred = acceptsock;
2734 return;
2735 }
2736
2737 case IOCTL_AFD_WINE_GET_INFO:
2738 {
2739 struct afd_get_info_params params;
2740
2741 if (get_reply_max_size() < sizeof(params))
2742 {
2743 set_error( STATUS_BUFFER_TOO_SMALL );
2744 return;
2745 }
2746
2747 params.family = sock->family;
2748 params.type = sock->type;
2749 params.protocol = sock->proto;
2750 set_reply_data( &params, sizeof(params) );
2751 return;
2752 }
2753
2754 case IOCTL_AFD_WINE_GET_SO_ACCEPTCONN:
2755 {
2756 int listening = (sock->state == SOCK_LISTENING);
2757
2758 if (get_reply_max_size() < sizeof(listening))
2759 {
2760 set_error( STATUS_BUFFER_TOO_SMALL );
2761 return;
2762 }
2763
2764 set_reply_data( &listening, sizeof(listening) );
2765 return;
2766 }
2767
2768 case IOCTL_AFD_WINE_GET_SO_ERROR:
2769 {
2770 int error;
2771 socklen_t len = sizeof(error);
2772 unsigned int i;
2773
2774 if (get_reply_max_size() < sizeof(error))
2775 {
2776 set_error( STATUS_BUFFER_TOO_SMALL );
2777 return;
2778 }
2779
2780 if (getsockopt( unix_fd, SOL_SOCKET, SO_ERROR, (char *)&error, &len ) < 0)
2781 {
2782 set_error( sock_get_ntstatus( errno ) );
2783 return;
2784 }
2785
2786 if (!error)
2787 {
2788 for (i = 0; i < ARRAY_SIZE( sock->errors ); ++i)
2789 {
2790 if (sock->errors[i])
2791 {
2792 error = sock_get_error( sock->errors[i] );
2793 break;
2794 }
2795 }
2796 }
2797
2798 set_reply_data( &error, sizeof(error) );
2799 return;
2800 }
2801
2802 case IOCTL_AFD_WINE_GET_SO_RCVBUF:
2803 {
2804 int rcvbuf = sock->rcvbuf;
2805
2806 if (get_reply_max_size() < sizeof(rcvbuf))
2807 {
2808 set_error( STATUS_BUFFER_TOO_SMALL );
2809 return;
2810 }
2811
2812 set_reply_data( &rcvbuf, sizeof(rcvbuf) );
2813 return;
2814 }
2815
2816 case IOCTL_AFD_WINE_SET_SO_RCVBUF:
2817 {
2818 DWORD rcvbuf;
2819
2820 if (get_req_data_size() < sizeof(rcvbuf))
2821 {
2822 set_error( STATUS_BUFFER_TOO_SMALL );
2823 return;
2824 }
2825 rcvbuf = *(DWORD *)get_req_data();
2826
2827 if (!setsockopt( unix_fd, SOL_SOCKET, SO_RCVBUF, (char *)&rcvbuf, sizeof(rcvbuf) ))
2828 sock->rcvbuf = rcvbuf;
2829 else
2830 set_error( sock_get_ntstatus( errno ) );
2831 return;
2832 }
2833
2834 case IOCTL_AFD_WINE_GET_SO_RCVTIMEO:
2835 {
2836 DWORD rcvtimeo = sock->rcvtimeo;
2837
2838 if (get_reply_max_size() < sizeof(rcvtimeo))
2839 {
2840 set_error( STATUS_BUFFER_TOO_SMALL );
2841 return;
2842 }
2843
2844 set_reply_data( &rcvtimeo, sizeof(rcvtimeo) );
2845 return;
2846 }
2847
2848 case IOCTL_AFD_WINE_SET_SO_RCVTIMEO:
2849 {
2850 DWORD rcvtimeo;
2851
2852 if (get_req_data_size() < sizeof(rcvtimeo))
2853 {
2854 set_error( STATUS_BUFFER_TOO_SMALL );
2855 return;
2856 }
2857 rcvtimeo = *(DWORD *)get_req_data();
2858
2859 sock->rcvtimeo = rcvtimeo;
2860 return;
2861 }
2862
2863 case IOCTL_AFD_WINE_GET_SO_SNDBUF:
2864 {
2865 int sndbuf = sock->sndbuf;
2866
2867 if (get_reply_max_size() < sizeof(sndbuf))
2868 {
2869 set_error( STATUS_BUFFER_TOO_SMALL );
2870 return;
2871 }
2872
2873 set_reply_data( &sndbuf, sizeof(sndbuf) );
2874 return;
2875 }
2876
2877 case IOCTL_AFD_WINE_SET_SO_SNDBUF:
2878 {
2879 DWORD sndbuf;
2880
2881 if (get_req_data_size() < sizeof(sndbuf))
2882 {
2883 set_error( STATUS_BUFFER_TOO_SMALL );
2884 return;
2885 }
2886 sndbuf = *(DWORD *)get_req_data();
2887
2888 #ifdef __APPLE__
2889 if (!sndbuf)
2890 {
2891 /* setsockopt fails if a zero value is passed */
2892 sock->sndbuf = sndbuf;
2893 return;
2894 }
2895 #endif
2896
2897 if (!setsockopt( unix_fd, SOL_SOCKET, SO_SNDBUF, (char *)&sndbuf, sizeof(sndbuf) ))
2898 sock->sndbuf = sndbuf;
2899 else
2900 set_error( sock_get_ntstatus( errno ) );
2901 return;
2902 }
2903
2904 case IOCTL_AFD_WINE_GET_SO_SNDTIMEO:
2905 {
2906 DWORD sndtimeo = sock->sndtimeo;
2907
2908 if (get_reply_max_size() < sizeof(sndtimeo))
2909 {
2910 set_error( STATUS_BUFFER_TOO_SMALL );
2911 return;
2912 }
2913
2914 set_reply_data( &sndtimeo, sizeof(sndtimeo) );
2915 return;
2916 }
2917
2918 case IOCTL_AFD_WINE_SET_SO_SNDTIMEO:
2919 {
2920 DWORD sndtimeo;
2921
2922 if (get_req_data_size() < sizeof(sndtimeo))
2923 {
2924 set_error( STATUS_BUFFER_TOO_SMALL );
2925 return;
2926 }
2927 sndtimeo = *(DWORD *)get_req_data();
2928
2929 sock->sndtimeo = sndtimeo;
2930 return;
2931 }
2932
2933 case IOCTL_AFD_WINE_GET_SO_CONNECT_TIME:
2934 {
2935 DWORD time = ~0u;
2936
2937 if (get_reply_max_size() < sizeof(time))
2938 {
2939 set_error( STATUS_BUFFER_TOO_SMALL );
2940 return;
2941 }
2942
2943 if (sock->state == SOCK_CONNECTED)
2944 time = (current_time - sock->connect_time) / 10000000;
2945
2946 set_reply_data( &time, sizeof(time) );
2947 return;
2948 }
2949
2950 case IOCTL_AFD_POLL:
2951 {
2952 if (get_reply_max_size() < get_req_data_size())
2953 {
2954 set_error( STATUS_INVALID_PARAMETER );
2955 return;
2956 }
2957
2958 if (is_machine_64bit( current->process->machine ))
2959 {
2960 const struct afd_poll_params_64 *params = get_req_data();
2961
2962 if (get_req_data_size() < sizeof(struct afd_poll_params_64) ||
2963 get_req_data_size() < offsetof( struct afd_poll_params_64, sockets[params->count] ))
2964 {
2965 set_error( STATUS_INVALID_PARAMETER );
2966 return;
2967 }
2968
2969 poll_socket( sock, async, params->exclusive, params->timeout, params->count, params->sockets );
2970 }
2971 else
2972 {
2973 const struct afd_poll_params_32 *params = get_req_data();
2974 struct afd_poll_socket_64 *sockets;
2975 unsigned int i;
2976
2977 if (get_req_data_size() < sizeof(struct afd_poll_params_32) ||
2978 get_req_data_size() < offsetof( struct afd_poll_params_32, sockets[params->count] ))
2979 {
2980 set_error( STATUS_INVALID_PARAMETER );
2981 return;
2982 }
2983
2984 if (!(sockets = mem_alloc( params->count * sizeof(*sockets) ))) return;
2985 for (i = 0; i < params->count; ++i)
2986 {
2987 sockets[i].socket = params->sockets[i].socket;
2988 sockets[i].flags = params->sockets[i].flags;
2989 sockets[i].status = params->sockets[i].status;
2990 }
2991
2992 poll_socket( sock, async, params->exclusive, params->timeout, params->count, sockets );
2993 free( sockets );
2994 }
2995
2996 return;
2997 }
2998
2999 default:
3000 set_error( STATUS_NOT_SUPPORTED );
3001 return;
3002 }
3003 }
3004
3005 static int poll_single_socket( struct sock *sock, int mask )
3006 {
3007 struct pollfd pollfd;
3008
3009 pollfd.fd = get_unix_fd( sock->fd );
3010 pollfd.events = poll_flags_from_afd( sock, mask );
3011 if (pollfd.events < 0 || poll( &pollfd, 1, 0 ) < 0)
3012 return 0;
3013
3014 if (sock->state == SOCK_CONNECTING && (pollfd.revents & (POLLERR | POLLHUP)))
3015 pollfd.revents &= ~POLLOUT;
3016
3017 if ((mask & AFD_POLL_HUP) && (pollfd.revents & POLLIN) && sock->type == WS_SOCK_STREAM)
3018 {
3019 char dummy;
3020
3021 if (!recv( get_unix_fd( sock->fd ), &dummy, 1, MSG_PEEK ))
3022 {
3023 pollfd.revents &= ~POLLIN;
3024 pollfd.revents |= POLLHUP;
3025 }
3026 }
3027
3028 return get_poll_flags( sock, pollfd.revents ) & mask;
3029 }
3030
3031 static void handle_exclusive_poll(struct poll_req *req)
3032 {
3033 unsigned int i;
3034
3035 for (i = 0; i < req->count; ++i)
3036 {
3037 struct sock *sock = req->sockets[i].sock;
3038 struct poll_req *main_poll = sock->main_poll;
3039
3040 if (main_poll && main_poll->exclusive && req->exclusive)
3041 {
3042 complete_async_poll( main_poll, STATUS_SUCCESS );
3043 main_poll = NULL;
3044 }
3045
3046 if (!main_poll)
3047 sock->main_poll = req;
3048 }
3049 }
3050
3051 static void poll_socket( struct sock *poll_sock, struct async *async, int exclusive, timeout_t timeout,
3052 unsigned int count, const struct afd_poll_socket_64 *sockets )
3053 {
3054 BOOL signaled = FALSE;
3055 struct poll_req *req;
3056 unsigned int i, j;
3057
3058 if (!count)
3059 {
3060 set_error( STATUS_INVALID_PARAMETER );
3061 return;
3062 }
3063
3064 if (!(req = mem_alloc( offsetof( struct poll_req, sockets[count] ) )))
3065 return;
3066
3067 req->timeout = NULL;
3068 if (timeout && timeout != TIMEOUT_INFINITE &&
3069 !(req->timeout = add_timeout_user( timeout, async_poll_timeout, req )))
3070 {
3071 free( req );
3072 return;
3073 }
3074 req->orig_timeout = timeout;
3075
3076 for (i = 0; i < count; ++i)
3077 {
3078 req->sockets[i].sock = (struct sock *)get_handle_obj( current->process, sockets[i].socket, 0, &sock_ops );
3079 if (!req->sockets[i].sock)
3080 {
3081 for (j = 0; j < i; ++j) release_object( req->sockets[j].sock );
3082 if (req->timeout) remove_timeout_user( req->timeout );
3083 free( req );
3084 return;
3085 }
3086 req->sockets[i].handle = sockets[i].socket;
3087 req->sockets[i].mask = sockets[i].flags;
3088 req->sockets[i].flags = 0;
3089 }
3090
3091 req->exclusive = exclusive;
3092 req->count = count;
3093 req->async = (struct async *)grab_object( async );
3094 req->iosb = async_get_iosb( async );
3095
3096 handle_exclusive_poll(req);
3097
3098 list_add_tail( &poll_list, &req->entry );
3099 async_set_completion_callback( async, free_poll_req, req );
3100 queue_async( &poll_sock->poll_q, async );
3101
3102 for (i = 0; i < count; ++i)
3103 {
3104 struct sock *sock = req->sockets[i].sock;
3105 int mask = req->sockets[i].mask;
3106 int flags = poll_single_socket( sock, mask );
3107
3108 if (flags)
3109 {
3110 signaled = TRUE;
3111 req->sockets[i].flags = flags;
3112 req->sockets[i].status = sock_get_ntstatus( sock_error( sock->fd ) );
3113 }
3114
3115 /* FIXME: do other error conditions deserve a similar treatment? */
3116 if (sock->state != SOCK_CONNECTING && sock->errors[AFD_POLL_BIT_CONNECT_ERR] && (mask & AFD_POLL_CONNECT_ERR))
3117 {
3118 signaled = TRUE;
3119 req->sockets[i].flags |= AFD_POLL_CONNECT_ERR;
3120 req->sockets[i].status = sock_get_ntstatus( sock->errors[AFD_POLL_BIT_CONNECT_ERR] );
3121 }
3122 }
3123
3124 if (!timeout || signaled)
3125 complete_async_poll( req, STATUS_SUCCESS );
3126
3127 for (i = 0; i < req->count; ++i)
3128 sock_reselect( req->sockets[i].sock );
3129 set_error( STATUS_PENDING );
3130 }
3131
3132 #ifdef HAVE_LINUX_RTNETLINK_H
3133
3134 /* only keep one ifchange object around, all sockets waiting for wakeups will look to it */
3135 static struct object *ifchange_object;
3136
3137 static void ifchange_dump( struct object *obj, int verbose );
3138 static struct fd *ifchange_get_fd( struct object *obj );
3139 static void ifchange_destroy( struct object *obj );
3140
3141 static int ifchange_get_poll_events( struct fd *fd );
3142 static void ifchange_poll_event( struct fd *fd, int event );
3143
3144 struct ifchange
3145 {
3146 struct object obj; /* object header */
3147 struct fd *fd; /* interface change file descriptor */
3148 struct list sockets; /* list of sockets to send interface change notifications */
3149 };
3150
3151 static const struct object_ops ifchange_ops =
3152 {
3153 sizeof(struct ifchange), /* size */
3154 &no_type, /* type */
3155 ifchange_dump, /* dump */
3156 no_add_queue, /* add_queue */
3157 NULL, /* remove_queue */
3158 NULL, /* signaled */
3159 no_satisfied, /* satisfied */
3160 no_signal, /* signal */
3161 ifchange_get_fd, /* get_fd */
3162 default_map_access, /* map_access */
3163 default_get_sd, /* get_sd */
3164 default_set_sd, /* set_sd */
3165 no_get_full_name, /* get_full_name */
3166 no_lookup_name, /* lookup_name */
3167 no_link_name, /* link_name */
3168 NULL, /* unlink_name */
3169 no_open_file, /* open_file */
3170 no_kernel_obj_list, /* get_kernel_obj_list */
3171 no_close_handle, /* close_handle */
3172 ifchange_destroy /* destroy */
3173 };
3174
3175 static const struct fd_ops ifchange_fd_ops =
3176 {
3177 ifchange_get_poll_events, /* get_poll_events */
3178 ifchange_poll_event, /* poll_event */
3179 NULL, /* get_fd_type */
3180 no_fd_read, /* read */
3181 no_fd_write, /* write */
3182 no_fd_flush, /* flush */
3183 no_fd_get_file_info, /* get_file_info */
3184 no_fd_get_volume_info, /* get_volume_info */
3185 no_fd_ioctl, /* ioctl */
3186 NULL, /* cancel_async */
3187 NULL, /* queue_async */
3188 NULL /* reselect_async */
3189 };
3190
3191 static void ifchange_dump( struct object *obj, int verbose )
3192 {
3193 assert( obj->ops == &ifchange_ops );
3194 fprintf( stderr, "Interface change\n" );
3195 }
3196
3197 static struct fd *ifchange_get_fd( struct object *obj )
3198 {
3199 struct ifchange *ifchange = (struct ifchange *)obj;
3200 return (struct fd *)grab_object( ifchange->fd );
3201 }
3202
3203 static void ifchange_destroy( struct object *obj )
3204 {
3205 struct ifchange *ifchange = (struct ifchange *)obj;
3206 assert( obj->ops == &ifchange_ops );
3207
3208 release_object( ifchange->fd );
3209
3210 /* reset the global ifchange object so that it will be recreated if it is needed again */
3211 assert( obj == ifchange_object );
3212 ifchange_object = NULL;
3213 }
3214
3215 static int ifchange_get_poll_events( struct fd *fd )
3216 {
3217 return POLLIN;
3218 }
3219
3220 /* wake up all the sockets waiting for a change notification event */
3221 static void ifchange_wake_up( struct object *obj, unsigned int status )
3222 {
3223 struct ifchange *ifchange = (struct ifchange *)obj;
3224 struct list *ptr, *next;
3225 assert( obj->ops == &ifchange_ops );
3226 assert( obj == ifchange_object );
3227
3228 LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets )
3229 {
3230 struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry );
3231
3232 assert( sock->ifchange_obj );
3233 async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */
3234 sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */
3235 }
3236 }
3237
3238 static void ifchange_poll_event( struct fd *fd, int event )
3239 {
3240 struct object *ifchange = get_fd_user( fd );
3241 unsigned int status = STATUS_PENDING;
3242 char buffer[PIPE_BUF];
3243 int r;
3244
3245 r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT );
3246 if (r < 0)
3247 {
3248 if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN))
3249 return; /* retry when poll() says the socket is ready */
3250 status = sock_get_ntstatus( errno );
3251 }
3252 else if (r > 0)
3253 {
3254 struct nlmsghdr *nlh;
3255
3256 for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r))
3257 {
3258 if (nlh->nlmsg_type == NLMSG_DONE)
3259 break;
3260 if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR)
3261 status = STATUS_SUCCESS;
3262 }
3263 }
3264 else status = STATUS_CANCELLED;
3265
3266 if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status );
3267 }
3268
3269 #endif
3270
3271 /* we only need one of these interface notification objects, all of the sockets dependent upon
3272 * it will wake up when a notification event occurs */
3273 static struct object *get_ifchange( void )
3274 {
3275 #ifdef HAVE_LINUX_RTNETLINK_H
3276 struct ifchange *ifchange;
3277 struct sockaddr_nl addr;
3278 int unix_fd;
3279
3280 if (ifchange_object)
3281 {
3282 /* increment the refcount for each socket that uses the ifchange object */
3283 return grab_object( ifchange_object );
3284 }
3285
3286 /* create the socket we need for processing interface change notifications */
3287 unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE );
3288 if (unix_fd == -1)
3289 {
3290 set_error( sock_get_ntstatus( errno ));
3291 return NULL;
3292 }
3293 fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */
3294 memset( &addr, 0, sizeof(addr) );
3295 addr.nl_family = AF_NETLINK;
3296 addr.nl_groups = RTMGRP_IPV4_IFADDR;
3297 /* bind the socket to the special netlink kernel interface */
3298 if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1)
3299 {
3300 close( unix_fd );
3301 set_error( sock_get_ntstatus( errno ));
3302 return NULL;
3303 }
3304 if (!(ifchange = alloc_object( &ifchange_ops )))
3305 {
3306 close( unix_fd );
3307 set_error( STATUS_NO_MEMORY );
3308 return NULL;
3309 }
3310 list_init( &ifchange->sockets );
3311 if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 )))
3312 {
3313 release_object( ifchange );
3314 set_error( STATUS_NO_MEMORY );
3315 return NULL;
3316 }
3317 set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */
3318
3319 /* the ifchange object is now successfully configured */
3320 ifchange_object = &ifchange->obj;
3321 return &ifchange->obj;
3322 #else
3323 set_error( STATUS_NOT_SUPPORTED );
3324 return NULL;
3325 #endif
3326 }
3327
3328 /* add the socket to the interface change notification list */
3329 static void ifchange_add_sock( struct object *obj, struct sock *sock )
3330 {
3331 #ifdef HAVE_LINUX_RTNETLINK_H
3332 struct ifchange *ifchange = (struct ifchange *)obj;
3333
3334 list_add_tail( &ifchange->sockets, &sock->ifchange_entry );
3335 #endif
3336 }
3337
3338 /* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */
3339 static struct object *sock_get_ifchange( struct sock *sock )
3340 {
3341 struct object *ifchange;
3342
3343 if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */
3344 return sock->ifchange_obj;
3345
3346 if (!(ifchange = get_ifchange()))
3347 return NULL;
3348
3349 /* add the socket to the ifchange notification list */
3350 ifchange_add_sock( ifchange, sock );
3351 sock->ifchange_obj = ifchange;
3352 return ifchange;
3353 }
3354
3355 /* destroy an existing ifchange queue for a specific socket */
3356 static void sock_release_ifchange( struct sock *sock )
3357 {
3358 if (sock->ifchange_obj)
3359 {
3360 list_remove( &sock->ifchange_entry );
3361 release_object( sock->ifchange_obj );
3362 sock->ifchange_obj = NULL;
3363 }
3364 }
3365
3366 static void socket_device_dump( struct object *obj, int verbose );
3367 static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
3368 unsigned int attr, struct object *root );
3369 static struct object *socket_device_open_file( struct object *obj, unsigned int access,
3370 unsigned int sharing, unsigned int options );
3371
3372 static const struct object_ops socket_device_ops =
3373 {
3374 sizeof(struct object), /* size */
3375 &device_type, /* type */
3376 socket_device_dump, /* dump */
3377 no_add_queue, /* add_queue */
3378 NULL, /* remove_queue */
3379 NULL, /* signaled */
3380 no_satisfied, /* satisfied */
3381 no_signal, /* signal */
3382 no_get_fd, /* get_fd */
3383 default_map_access, /* map_access */
3384 default_get_sd, /* get_sd */
3385 default_set_sd, /* set_sd */
3386 default_get_full_name, /* get_full_name */
3387 socket_device_lookup_name, /* lookup_name */
3388 directory_link_name, /* link_name */
3389 default_unlink_name, /* unlink_name */
3390 socket_device_open_file, /* open_file */
3391 no_kernel_obj_list, /* get_kernel_obj_list */
3392 no_close_handle, /* close_handle */
3393 no_destroy /* destroy */
3394 };
3395
3396 static void socket_device_dump( struct object *obj, int verbose )
3397 {
3398 fputs( "Socket device\n", stderr );
3399 }
3400
3401 static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
3402 unsigned int attr, struct object *root )
3403 {
3404 if (name) name->len = 0;
3405 return NULL;
3406 }
3407
3408 static struct object *socket_device_open_file( struct object *obj, unsigned int access,
3409 unsigned int sharing, unsigned int options )
3410 {
3411 struct sock *sock;
3412
3413 if (!(sock = create_socket())) return NULL;
3414 if (!(sock->fd = alloc_pseudo_fd( &sock_fd_ops, &sock->obj, options )))
3415 {
3416 release_object( sock );
3417 return NULL;
3418 }
3419 return &sock->obj;
3420 }
3421
3422 struct object *create_socket_device( struct object *root, const struct unicode_str *name,
3423 unsigned int attr, const struct security_descriptor *sd )
3424 {
3425 return create_named_object( root, &socket_device_ops, name, attr, sd );
3426 }
3427
3428 DECL_HANDLER(recv_socket)
3429 {
3430 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->async.handle, 0, &sock_ops );
3431 unsigned int status = STATUS_PENDING;
3432 timeout_t timeout = 0;
3433 struct async *async;
3434 struct fd *fd;
3435
3436 if (!sock) return;
3437 fd = sock->fd;
3438
3439 if (!req->force_async && !sock->nonblocking && is_fd_overlapped( fd ))
3440 timeout = (timeout_t)sock->rcvtimeo * -10000;
3441
3442 if (sock->rd_shutdown) status = STATUS_PIPE_DISCONNECTED;
3443 else if (!async_queued( &sock->read_q ))
3444 {
3445 /* If read_q is not empty, we cannot really tell if the already queued
3446 * asyncs will not consume all available data; if there's no data
3447 * available, the current request won't be immediately satiable.
3448 */
3449 struct pollfd pollfd;
3450 pollfd.fd = get_unix_fd( sock->fd );
3451 pollfd.events = req->oob ? POLLPRI : POLLIN;
3452 pollfd.revents = 0;
3453 if (poll(&pollfd, 1, 0) >= 0 && pollfd.revents)
3454 {
3455 /* Give the client opportunity to complete synchronously.
3456 * If it turns out that the I/O request is not actually immediately satiable,
3457 * the client may then choose to re-queue the async (with STATUS_PENDING). */
3458 status = STATUS_ALERTED;
3459 }
3460 }
3461
3462 if (status == STATUS_PENDING && !req->force_async && sock->nonblocking)
3463 status = STATUS_DEVICE_NOT_READY;
3464
3465 sock->pending_events &= ~(req->oob ? AFD_POLL_OOB : AFD_POLL_READ);
3466 sock->reported_events &= ~(req->oob ? AFD_POLL_OOB : AFD_POLL_READ);
3467
3468 if ((async = create_request_async( fd, get_fd_comp_flags( fd ), &req->async )))
3469 {
3470 set_error( status );
3471
3472 if (timeout)
3473 async_set_timeout( async, timeout, STATUS_IO_TIMEOUT );
3474
3475 if (status == STATUS_PENDING || status == STATUS_ALERTED)
3476 queue_async( &sock->read_q, async );
3477
3478 /* always reselect; we changed reported_events above */
3479 sock_reselect( sock );
3480
3481 reply->wait = async_handoff( async, NULL, 0 );
3482 reply->options = get_fd_options( fd );
3483 reply->nonblocking = sock->nonblocking;
3484 release_object( async );
3485 }
3486 release_object( sock );
3487 }
3488
3489 static void send_socket_completion_callback( void *private )
3490 {
3491 struct send_req *send_req = private;
3492 struct iosb *iosb = send_req->iosb;
3493 struct sock *sock = send_req->sock;
3494
3495 if (iosb->status != STATUS_SUCCESS)
3496 {
3497 /* send() calls only clear and reselect events if unsuccessful. */
3498 sock->pending_events &= ~AFD_POLL_WRITE;
3499 sock->reported_events &= ~AFD_POLL_WRITE;
3500 sock_reselect( sock );
3501 }
3502
3503 release_object( iosb );
3504 release_object( sock );
3505 free( send_req );
3506 }
3507
3508 DECL_HANDLER(send_socket)
3509 {
3510 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->async.handle, 0, &sock_ops );
3511 unsigned int status = STATUS_PENDING;
3512 timeout_t timeout = 0;
3513 struct async *async;
3514 struct fd *fd;
3515 int bind_errno = 0;
3516
3517 if (!sock) return;
3518 fd = sock->fd;
3519
3520 if (sock->type == WS_SOCK_DGRAM && !sock->bound)
3521 {
3522 union unix_sockaddr unix_addr;
3523 socklen_t unix_len;
3524 int unix_fd = get_unix_fd( fd );
3525
3526 unix_len = get_unix_sockaddr_any( &unix_addr, sock->family );
3527 if (bind( unix_fd, &unix_addr.addr, unix_len ) < 0)
3528 bind_errno = errno;
3529
3530 if (getsockname( unix_fd, &unix_addr.addr, &unix_len ) >= 0)
3531 {
3532 sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) );
3533 sock->bound = 1;
3534 }
3535 else if (!bind_errno) bind_errno = errno;
3536 }
3537
3538 if (!req->force_async && !sock->nonblocking && is_fd_overlapped( fd ))
3539 timeout = (timeout_t)sock->sndtimeo * -10000;
3540
3541 if (bind_errno) status = sock_get_ntstatus( bind_errno );
3542 else if (sock->wr_shutdown) status = STATUS_PIPE_DISCONNECTED;
3543 else if (!async_queued( &sock->write_q ))
3544 {
3545 /* If write_q is not empty, we cannot really tell if the already queued
3546 * asyncs will not consume all available space; if there's no space
3547 * available, the current request won't be immediately satiable.
3548 */
3549 struct pollfd pollfd;
3550 pollfd.fd = get_unix_fd( sock->fd );
3551 pollfd.events = POLLOUT;
3552 pollfd.revents = 0;
3553 if (poll(&pollfd, 1, 0) >= 0 && pollfd.revents)
3554 {
3555 /* Give the client opportunity to complete synchronously.
3556 * If it turns out that the I/O request is not actually immediately satiable,
3557 * the client may then choose to re-queue the async (with STATUS_PENDING). */
3558 status = STATUS_ALERTED;
3559 }
3560 }
3561
3562 if (status == STATUS_PENDING && !req->force_async && sock->nonblocking)
3563 status = STATUS_DEVICE_NOT_READY;
3564
3565 if ((async = create_request_async( fd, get_fd_comp_flags( fd ), &req->async )))
3566 {
3567 struct send_req *send_req;
3568 struct iosb *iosb = async_get_iosb( async );
3569
3570 if ((send_req = mem_alloc( sizeof(*send_req) )))
3571 {
3572 send_req->iosb = (struct iosb *)grab_object( iosb );
3573 send_req->sock = (struct sock *)grab_object( sock );
3574 async_set_completion_callback( async, send_socket_completion_callback, send_req );
3575 }
3576 else if (status == STATUS_PENDING || status == STATUS_DEVICE_NOT_READY)
3577 status = STATUS_NO_MEMORY;
3578
3579 release_object( iosb );
3580
3581 set_error( status );
3582
3583 if (timeout)
3584 async_set_timeout( async, timeout, STATUS_IO_TIMEOUT );
3585
3586 if (status == STATUS_PENDING || status == STATUS_ALERTED)
3587 {
3588 queue_async( &sock->write_q, async );
3589 sock_reselect( sock );
3590 }
3591
3592 reply->wait = async_handoff( async, NULL, 0 );
3593 reply->options = get_fd_options( fd );
3594 reply->nonblocking = sock->nonblocking;
3595 release_object( async );
3596 }
3597 release_object( sock );
3598 }
Windows API implementation