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vbscript: Handle index read access to array properties.
[wine.git] / server / sock.c
blobc130821b7f4192239d33db6d6350cc5516dcb96b
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 #include "wine/rbtree.h"
95
96 #include "process.h"
97 #include "file.h"
98 #include "handle.h"
99 #include "thread.h"
100 #include "request.h"
101 #include "user.h"
102
103 #if defined(linux) && !defined(IP_UNICAST_IF)
104 #define IP_UNICAST_IF 50
105 #endif
106
107 static const char magic_loopback_addr[] = {127, 12, 34, 56};
108
109 union win_sockaddr
110 {
111 struct WS_sockaddr addr;
112 struct WS_sockaddr_in in;
113 struct WS_sockaddr_in6 in6;
114 struct WS_sockaddr_ipx ipx;
115 SOCKADDR_IRDA irda;
116 };
117
118 union unix_sockaddr
119 {
120 struct sockaddr addr;
121 struct sockaddr_in in;
122 struct sockaddr_in6 in6;
123 #ifdef HAS_IPX
124 struct sockaddr_ipx ipx;
125 #endif
126 #ifdef HAS_IRDA
127 struct sockaddr_irda irda;
128 #endif
129 };
130
131 static struct list poll_list = LIST_INIT( poll_list );
132
133 struct poll_req
134 {
135 struct list entry;
136 struct async *async;
137 struct iosb *iosb;
138 struct timeout_user *timeout;
139 timeout_t orig_timeout;
140 int exclusive;
141 int pending;
142 unsigned int count;
143 struct
144 {
145 struct sock *sock;
146 int mask;
147 obj_handle_t handle;
148 int flags;
149 unsigned int status;
150 } sockets[1];
151 };
152
153 struct accept_req
154 {
155 struct list entry;
156 struct async *async;
157 struct iosb *iosb;
158 struct sock *sock, *acceptsock;
159 int accepted;
160 unsigned int recv_len, local_len;
161 };
162
163 struct connect_req
164 {
165 struct async *async;
166 struct iosb *iosb;
167 struct sock *sock;
168 unsigned int addr_len, send_len, send_cursor;
169 };
170
171 struct send_req
172 {
173 struct iosb *iosb;
174 struct sock *sock;
175 };
176
177 enum connection_state
178 {
179 SOCK_LISTENING,
180 SOCK_UNCONNECTED,
181 SOCK_CONNECTING,
182 SOCK_CONNECTED,
183 SOCK_CONNECTIONLESS,
184 };
185
186 struct bound_addr
187 {
188 struct rb_entry entry;
189 union unix_sockaddr addr;
190 int match_any_addr;
191 int reuse_count;
192 };
193
194 #define MAX_ICMP_HISTORY_LENGTH 8
195
196 struct sock
197 {
198 struct object obj; /* object header */
199 struct fd *fd; /* socket file descriptor */
200 enum connection_state state; /* connection state */
201 unsigned int mask; /* event mask */
202 /* pending AFD_POLL_* events which have not yet been reported to the application */
203 unsigned int pending_events;
204 /* AFD_POLL_* events which have already been reported and should not be
205 * selected for again until reset by a relevant call.
206 *
207 * For example, if AFD_POLL_READ is set here and not in pending_events, it
208 * has already been reported and consumed, and we should not report it
209 * again, even if POLLIN is signaled, until it is reset by e.g recv().
210 *
211 * If an event has been signaled and not consumed yet, it will be set in
212 * both pending_events and reported_events (as we should only ever report
213 * any event once until it is reset.) */
214 unsigned int reported_events;
215 unsigned short proto; /* socket protocol */
216 unsigned short type; /* socket type */
217 unsigned short family; /* socket family */
218 struct event *event; /* event object */
219 user_handle_t window; /* window to send the message to */
220 unsigned int message; /* message to send */
221 obj_handle_t wparam; /* message wparam (socket handle) */
222 int errors[AFD_POLL_BIT_COUNT]; /* event errors */
223 timeout_t connect_time;/* time the socket was connected */
224 struct sock *deferred; /* socket that waits for a deferred accept */
225 struct async_queue read_q; /* queue for asynchronous reads */
226 struct async_queue write_q; /* queue for asynchronous writes */
227 struct async_queue ifchange_q; /* queue for interface change notifications */
228 struct async_queue accept_q; /* queue for asynchronous accepts */
229 struct async_queue connect_q; /* queue for asynchronous connects */
230 struct async_queue poll_q; /* queue for asynchronous polls */
231 struct object *ifchange_obj; /* the interface change notification object */
232 struct list ifchange_entry; /* entry in ifchange notification list */
233 struct list accept_list; /* list of pending accept requests */
234 struct accept_req *accept_recv_req; /* pending accept-into request which will recv on this socket */
235 struct connect_req *connect_req; /* pending connection request */
236 struct poll_req *main_poll; /* main poll */
237 union win_sockaddr addr; /* socket name */
238 int addr_len; /* socket name length */
239 unsigned int rcvbuf; /* advisory recv buffer size */
240 unsigned int sndbuf; /* advisory send buffer size */
241 unsigned int rcvtimeo; /* receive timeout in ms */
242 unsigned int sndtimeo; /* send timeout in ms */
243 struct
244 {
245 unsigned short icmp_id;
246 unsigned short icmp_seq;
247 }
248 icmp_fixup_data[MAX_ICMP_HISTORY_LENGTH]; /* Sent ICMP packets history used to fixup reply id. */
249 struct bound_addr *bound_addr[2]; /* Links to the entries in bound addresses tree. */
250 unsigned int icmp_fixup_data_len; /* Sent ICMP packets history length. */
251 unsigned int rd_shutdown : 1; /* is the read end shut down? */
252 unsigned int wr_shutdown : 1; /* is the write end shut down? */
253 unsigned int wr_shutdown_pending : 1; /* is a write shutdown pending? */
254 unsigned int hangup : 1; /* has the read end received a hangup? */
255 unsigned int aborted : 1; /* did we get a POLLERR or irregular POLLHUP? */
256 unsigned int nonblocking : 1; /* is the socket nonblocking? */
257 unsigned int bound : 1; /* is the socket bound? */
258 unsigned int reset : 1; /* did we get a TCP reset? */
259 unsigned int reuseaddr : 1; /* winsock SO_REUSEADDR option value */
260 unsigned int exclusiveaddruse : 1; /* winsock SO_EXCLUSIVEADDRUSE option value */
261 };
262
263 static int is_tcp_socket( struct sock *sock )
264 {
265 return sock->type == WS_SOCK_STREAM && (sock->family == WS_AF_INET || sock->family == WS_AF_INET6);
266 }
267
268 static int addr_compare( const void *key, const struct wine_rb_entry *entry )
269 {
270 const struct bound_addr *bound_addr = RB_ENTRY_VALUE(entry, struct bound_addr, entry);
271 const struct bound_addr *addr = key;
272
273 if (addr->addr.addr.sa_family != bound_addr->addr.addr.sa_family)
274 return addr->addr.addr.sa_family < bound_addr->addr.addr.sa_family ? -1 : 1;
275
276 if (addr->addr.addr.sa_family == AF_INET)
277 {
278 if (addr->addr.in.sin_port != bound_addr->addr.in.sin_port)
279 return addr->addr.in.sin_port < bound_addr->addr.in.sin_port ? -1 : 1;
280 if (bound_addr->match_any_addr || addr->match_any_addr
281 || addr->addr.in.sin_addr.s_addr == bound_addr->addr.in.sin_addr.s_addr)
282 return 0;
283 return addr->addr.in.sin_addr.s_addr < bound_addr->addr.in.sin_addr.s_addr ? -1 : 1;
284 }
285
286 assert( addr->addr.addr.sa_family == AF_INET6 );
287 if (addr->addr.in6.sin6_port != bound_addr->addr.in6.sin6_port)
288 return addr->addr.in6.sin6_port < bound_addr->addr.in6.sin6_port ? -1 : 1;
289 if (bound_addr->match_any_addr || addr->match_any_addr) return 0;
290 return memcmp( &addr->addr.in6.sin6_addr, &bound_addr->addr.in6.sin6_addr, sizeof(addr->addr.in6.sin6_addr) );
291 }
292
293 static int ipv4addr_from_v6( union unix_sockaddr *v4addr, const struct sockaddr_in6 *in6, int map_unspecified )
294 {
295 v4addr->in.sin_family = AF_INET;
296 v4addr->in.sin_port = in6->sin6_port;
297
298 if (map_unspecified && IN6_IS_ADDR_UNSPECIFIED(&in6->sin6_addr))
299 {
300 v4addr->in.sin_addr.s_addr = htonl( INADDR_ANY );
301 return 1;
302 }
303 if (IN6_IS_ADDR_V4COMPAT(&in6->sin6_addr) || IN6_IS_ADDR_V4MAPPED(&in6->sin6_addr))
304 {
305 memcpy( &v4addr->in.sin_addr.s_addr, &in6->sin6_addr.s6_addr[12], sizeof(v4addr->in.sin_addr.s_addr) );
306 return 1;
307 }
308 return 0;
309 }
310
311 static struct rb_tree bound_addresses_tree = { addr_compare };
312
313 static int should_track_conflicts_for_addr( struct sock *sock, const union unix_sockaddr *addr )
314 {
315 if (!is_tcp_socket( sock )) return 0;
316
317 if (sock->family == WS_AF_INET && addr->addr.sa_family == AF_INET && addr->in.sin_port)
318 return 1;
319 else if (sock->family == WS_AF_INET6 && addr->addr.sa_family == AF_INET6 && addr->in6.sin6_port)
320 return 1;
321
322 return 0;
323 }
324
325 static int is_any_addr( const union unix_sockaddr *addr )
326 {
327 if (addr->addr.sa_family == AF_INET && addr->in.sin_addr.s_addr == htonl( INADDR_ANY ))
328 return 1;
329 if (addr->addr.sa_family == AF_INET6 && IN6_IS_ADDR_UNSPECIFIED(&addr->in6.sin6_addr))
330 return 1;
331 return 0;
332 }
333
334 static int check_addr_usage( struct sock *sock, const union unix_sockaddr *addr, int v6only )
335 {
336 struct bound_addr *bound_addr, search_addr;
337 struct rb_entry *entry;
338
339 if (!should_track_conflicts_for_addr( sock, addr )) return 0;
340
341 search_addr.addr = *addr;
342 search_addr.match_any_addr = sock->exclusiveaddruse && is_any_addr( addr );
343
344 if ((entry = rb_get( &bound_addresses_tree, &search_addr )))
345 {
346 bound_addr = WINE_RB_ENTRY_VALUE(entry, struct bound_addr, entry);
347 if (bound_addr->reuse_count == -1 || !sock->reuseaddr)
348 {
349 set_error( sock->reuseaddr || bound_addr->match_any_addr
350 ? STATUS_ACCESS_DENIED : STATUS_SHARING_VIOLATION );
351 return 1;
352 }
353 }
354
355 if (sock->family != WS_AF_INET6 || v6only) return 0;
356 if (!ipv4addr_from_v6( &search_addr.addr, &addr->in6, sock->exclusiveaddruse )) return 0;
357
358 search_addr.match_any_addr = sock->exclusiveaddruse && is_any_addr( &search_addr.addr );
359 if ((entry = rb_get( &bound_addresses_tree, &search_addr )))
360 {
361 bound_addr = WINE_RB_ENTRY_VALUE(entry, struct bound_addr, entry);
362 if (bound_addr->reuse_count == -1 || !sock->reuseaddr)
363 {
364 set_error( sock->reuseaddr || bound_addr->match_any_addr
365 ? STATUS_ACCESS_DENIED : STATUS_SHARING_VIOLATION );
366 return 1;
367 }
368 }
369 return 0;
370 }
371
372 static struct bound_addr *register_bound_address( struct sock *sock, const union unix_sockaddr *addr )
373 {
374 struct bound_addr *bound_addr, *temp;
375
376 if (!(bound_addr = mem_alloc( sizeof(*bound_addr) )))
377 return NULL;
378
379 bound_addr->addr = *addr;
380 bound_addr->match_any_addr = sock->exclusiveaddruse && is_any_addr( addr );
381
382 if (rb_put( &bound_addresses_tree, bound_addr, &bound_addr->entry ))
383 {
384 temp = bound_addr;
385 bound_addr = WINE_RB_ENTRY_VALUE(rb_get( &bound_addresses_tree, temp ), struct bound_addr, entry);
386 free( temp );
387 if (bound_addr->reuse_count == -1)
388 {
389 if (debug_level)
390 fprintf( stderr, "register_bound_address: address being updated is already exclusively bound\n" );
391 return NULL;
392 }
393 ++bound_addr->reuse_count;
394 }
395 else
396 {
397 bound_addr->reuse_count = sock->reuseaddr ? 1 : -1;
398 }
399 return bound_addr;
400 }
401
402 static void update_addr_usage( struct sock *sock, const union unix_sockaddr *addr, int v6only )
403 {
404 union unix_sockaddr v4addr;
405
406 assert( !sock->bound_addr[0] && !sock->bound_addr[1] );
407
408 if (!should_track_conflicts_for_addr( sock, addr )) return;
409
410 sock->bound_addr[0] = register_bound_address( sock, addr );
411
412 if (sock->family != WS_AF_INET6 || v6only) return;
413
414 if (!ipv4addr_from_v6( &v4addr, &addr->in6, sock->exclusiveaddruse )) return;
415
416 sock->bound_addr[1] = register_bound_address( sock, &v4addr );
417 }
418
419 static void sock_dump( struct object *obj, int verbose );
420 static struct fd *sock_get_fd( struct object *obj );
421 static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
422 static void sock_destroy( struct object *obj );
423 static struct object *sock_get_ifchange( struct sock *sock );
424 static void sock_release_ifchange( struct sock *sock );
425
426 static int sock_get_poll_events( struct fd *fd );
427 static void sock_poll_event( struct fd *fd, int event );
428 static enum server_fd_type sock_get_fd_type( struct fd *fd );
429 static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
430 static void sock_cancel_async( struct fd *fd, struct async *async );
431 static void sock_reselect_async( struct fd *fd, struct async_queue *queue );
432
433 static int accept_into_socket( struct sock *sock, struct sock *acceptsock );
434 static struct sock *accept_socket( struct sock *sock );
435 static int sock_get_ntstatus( int err );
436 static unsigned int sock_get_error( int err );
437 static void poll_socket( struct sock *poll_sock, struct async *async, int exclusive, timeout_t timeout,
438 unsigned int count, const struct afd_poll_socket_64 *sockets );
439
440 static const struct object_ops sock_ops =
441 {
442 sizeof(struct sock), /* size */
443 &file_type, /* type */
444 sock_dump, /* dump */
445 add_queue, /* add_queue */
446 remove_queue, /* remove_queue */
447 default_fd_signaled, /* signaled */
448 no_satisfied, /* satisfied */
449 no_signal, /* signal */
450 sock_get_fd, /* get_fd */
451 default_map_access, /* map_access */
452 default_get_sd, /* get_sd */
453 default_set_sd, /* set_sd */
454 no_get_full_name, /* get_full_name */
455 no_lookup_name, /* lookup_name */
456 no_link_name, /* link_name */
457 NULL, /* unlink_name */
458 no_open_file, /* open_file */
459 no_kernel_obj_list, /* get_kernel_obj_list */
460 sock_close_handle, /* close_handle */
461 sock_destroy /* destroy */
462 };
463
464 static const struct fd_ops sock_fd_ops =
465 {
466 sock_get_poll_events, /* get_poll_events */
467 sock_poll_event, /* poll_event */
468 sock_get_fd_type, /* get_fd_type */
469 no_fd_read, /* read */
470 no_fd_write, /* write */
471 no_fd_flush, /* flush */
472 default_fd_get_file_info, /* get_file_info */
473 no_fd_get_volume_info, /* get_volume_info */
474 sock_ioctl, /* ioctl */
475 sock_cancel_async, /* cancel_async */
476 no_fd_queue_async, /* queue_async */
477 sock_reselect_async /* reselect_async */
478 };
479
480 static int sockaddr_from_unix( const union unix_sockaddr *uaddr, struct WS_sockaddr *wsaddr, socklen_t wsaddrlen )
481 {
482 memset( wsaddr, 0, wsaddrlen );
483
484 switch (uaddr->addr.sa_family)
485 {
486 case AF_INET:
487 {
488 struct WS_sockaddr_in win = {0};
489
490 if (wsaddrlen < sizeof(win)) return -1;
491 win.sin_family = WS_AF_INET;
492 win.sin_port = uaddr->in.sin_port;
493 memcpy( &win.sin_addr, &uaddr->in.sin_addr, sizeof(win.sin_addr) );
494 memcpy( wsaddr, &win, sizeof(win) );
495 return sizeof(win);
496 }
497
498 case AF_INET6:
499 {
500 struct WS_sockaddr_in6 win = {0};
501
502 if (wsaddrlen < sizeof(win)) return -1;
503 win.sin6_family = WS_AF_INET6;
504 win.sin6_port = uaddr->in6.sin6_port;
505 win.sin6_flowinfo = uaddr->in6.sin6_flowinfo;
506 memcpy( &win.sin6_addr, &uaddr->in6.sin6_addr, sizeof(win.sin6_addr) );
507 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
508 win.sin6_scope_id = uaddr->in6.sin6_scope_id;
509 #endif
510 memcpy( wsaddr, &win, sizeof(win) );
511 return sizeof(win);
512 }
513
514 #ifdef HAS_IPX
515 case AF_IPX:
516 {
517 struct WS_sockaddr_ipx win = {0};
518
519 if (wsaddrlen < sizeof(win)) return -1;
520 win.sa_family = WS_AF_IPX;
521 memcpy( win.sa_netnum, &uaddr->ipx.sipx_network, sizeof(win.sa_netnum) );
522 memcpy( win.sa_nodenum, &uaddr->ipx.sipx_node, sizeof(win.sa_nodenum) );
523 win.sa_socket = uaddr->ipx.sipx_port;
524 memcpy( wsaddr, &win, sizeof(win) );
525 return sizeof(win);
526 }
527 #endif
528
529 #ifdef HAS_IRDA
530 case AF_IRDA:
531 {
532 SOCKADDR_IRDA win;
533
534 if (wsaddrlen < sizeof(win)) return -1;
535 win.irdaAddressFamily = WS_AF_IRDA;
536 memcpy( win.irdaDeviceID, &uaddr->irda.sir_addr, sizeof(win.irdaDeviceID) );
537 if (uaddr->irda.sir_lsap_sel != LSAP_ANY)
538 snprintf( win.irdaServiceName, sizeof(win.irdaServiceName), "LSAP-SEL%u", uaddr->irda.sir_lsap_sel );
539 else
540 memcpy( win.irdaServiceName, uaddr->irda.sir_name, sizeof(win.irdaServiceName) );
541 memcpy( wsaddr, &win, sizeof(win) );
542 return sizeof(win);
543 }
544 #endif
545
546 case AF_UNSPEC:
547 return 0;
548
549 default:
550 return -1;
551
552 }
553 }
554
555 static socklen_t sockaddr_to_unix( const struct WS_sockaddr *wsaddr, int wsaddrlen, union unix_sockaddr *uaddr )
556 {
557 memset( uaddr, 0, sizeof(*uaddr) );
558
559 switch (wsaddr->sa_family)
560 {
561 case WS_AF_INET:
562 {
563 struct WS_sockaddr_in win = {0};
564
565 if (wsaddrlen < sizeof(win)) return 0;
566 memcpy( &win, wsaddr, sizeof(win) );
567 uaddr->in.sin_family = AF_INET;
568 uaddr->in.sin_port = win.sin_port;
569 memcpy( &uaddr->in.sin_addr, &win.sin_addr, sizeof(win.sin_addr) );
570 return sizeof(uaddr->in);
571 }
572
573 case WS_AF_INET6:
574 {
575 struct WS_sockaddr_in6 win = {0};
576
577 if (wsaddrlen < sizeof(win)) return 0;
578 memcpy( &win, wsaddr, sizeof(win) );
579 uaddr->in6.sin6_family = AF_INET6;
580 uaddr->in6.sin6_port = win.sin6_port;
581 uaddr->in6.sin6_flowinfo = win.sin6_flowinfo;
582 memcpy( &uaddr->in6.sin6_addr, &win.sin6_addr, sizeof(win.sin6_addr) );
583 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
584 uaddr->in6.sin6_scope_id = win.sin6_scope_id;
585 #endif
586 return sizeof(uaddr->in6);
587 }
588
589 #ifdef HAS_IPX
590 case WS_AF_IPX:
591 {
592 struct WS_sockaddr_ipx win = {0};
593
594 if (wsaddrlen < sizeof(win)) return 0;
595 memcpy( &win, wsaddr, sizeof(win) );
596 uaddr->ipx.sipx_family = AF_IPX;
597 memcpy( &uaddr->ipx.sipx_network, win.sa_netnum, sizeof(win.sa_netnum) );
598 memcpy( &uaddr->ipx.sipx_node, win.sa_nodenum, sizeof(win.sa_nodenum) );
599 uaddr->ipx.sipx_port = win.sa_socket;
600 return sizeof(uaddr->ipx);
601 }
602 #endif
603
604 #ifdef HAS_IRDA
605 case WS_AF_IRDA:
606 {
607 SOCKADDR_IRDA win = {0};
608 unsigned int lsap_sel;
609
610 if (wsaddrlen < sizeof(win)) return 0;
611 memcpy( &win, wsaddr, sizeof(win) );
612 uaddr->irda.sir_family = AF_IRDA;
613 if (sscanf( win.irdaServiceName, "LSAP-SEL%u", &lsap_sel ) == 1)
614 uaddr->irda.sir_lsap_sel = lsap_sel;
615 else
616 {
617 uaddr->irda.sir_lsap_sel = LSAP_ANY;
618 memcpy( uaddr->irda.sir_name, win.irdaServiceName, sizeof(win.irdaServiceName) );
619 }
620 memcpy( &uaddr->irda.sir_addr, win.irdaDeviceID, sizeof(win.irdaDeviceID) );
621 return sizeof(uaddr->irda);
622 }
623 #endif
624
625 case WS_AF_UNSPEC:
626 switch (wsaddrlen)
627 {
628 default: /* likely an ipv4 address */
629 case sizeof(struct WS_sockaddr_in):
630 return sizeof(uaddr->in);
631
632 #ifdef HAS_IPX
633 case sizeof(struct WS_sockaddr_ipx):
634 return sizeof(uaddr->ipx);
635 #endif
636
637 #ifdef HAS_IRDA
638 case sizeof(SOCKADDR_IRDA):
639 return sizeof(uaddr->irda);
640 #endif
641
642 case sizeof(struct WS_sockaddr_in6):
643 return sizeof(uaddr->in6);
644 }
645
646 default:
647 return 0;
648 }
649 }
650
651 static socklen_t get_unix_sockaddr_any( union unix_sockaddr *uaddr, int ws_family )
652 {
653 memset( uaddr, 0, sizeof(*uaddr) );
654 switch (ws_family)
655 {
656 case WS_AF_INET:
657 uaddr->in.sin_family = AF_INET;
658 return sizeof(uaddr->in);
659 case WS_AF_INET6:
660 uaddr->in6.sin6_family = AF_INET6;
661 return sizeof(uaddr->in6);
662 #ifdef HAS_IPX
663 case WS_AF_IPX:
664 uaddr->ipx.sipx_family = AF_IPX;
665 return sizeof(uaddr->ipx);
666 #endif
667 #ifdef HAS_IRDA
668 case WS_AF_IRDA:
669 uaddr->irda.sir_family = AF_IRDA;
670 return sizeof(uaddr->irda);
671 #endif
672 default:
673 return 0;
674 }
675 }
676
677 /* some events are generated at the same time but must be sent in a particular
678 * order (e.g. CONNECT must be sent before READ) */
679 static const enum afd_poll_bit event_bitorder[] =
680 {
681 AFD_POLL_BIT_CONNECT,
682 AFD_POLL_BIT_CONNECT_ERR,
683 AFD_POLL_BIT_ACCEPT,
684 AFD_POLL_BIT_OOB,
685 AFD_POLL_BIT_READ,
686 AFD_POLL_BIT_WRITE,
687 AFD_POLL_BIT_RESET,
688 AFD_POLL_BIT_HUP,
689 AFD_POLL_BIT_CLOSE,
690 };
691
692 typedef enum {
693 SOCK_SHUTDOWN_ERROR = -1,
694 SOCK_SHUTDOWN_EOF = 0,
695 SOCK_SHUTDOWN_POLLHUP = 1
696 } sock_shutdown_t;
697
698 static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
699
700 static sock_shutdown_t sock_check_pollhup(void)
701 {
702 sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
703 int fd[2], n;
704 struct pollfd pfd;
705 char dummy;
706
707 if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) return ret;
708 if ( shutdown( fd[0], 1 ) ) goto out;
709
710 pfd.fd = fd[1];
711 pfd.events = POLLIN;
712 pfd.revents = 0;
713
714 /* Solaris' poll() sometimes returns nothing if given a 0ms timeout here */
715 n = poll( &pfd, 1, 1 );
716 if ( n != 1 ) goto out; /* error or timeout */
717 if ( pfd.revents & POLLHUP )
718 ret = SOCK_SHUTDOWN_POLLHUP;
719 else if ( pfd.revents & POLLIN &&
720 read( fd[1], &dummy, 1 ) == 0 )
721 ret = SOCK_SHUTDOWN_EOF;
722
723 out:
724 close( fd[0] );
725 close( fd[1] );
726 return ret;
727 }
728
729 void sock_init(void)
730 {
731 sock_shutdown_type = sock_check_pollhup();
732
733 switch ( sock_shutdown_type )
734 {
735 case SOCK_SHUTDOWN_EOF:
736 if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
737 break;
738 case SOCK_SHUTDOWN_POLLHUP:
739 if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
740 break;
741 default:
742 fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
743 sock_shutdown_type = SOCK_SHUTDOWN_EOF;
744 }
745 }
746
747 static void sock_reselect( struct sock *sock )
748 {
749 int ev = sock_get_poll_events( sock->fd );
750
751 if (debug_level)
752 fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
753
754 set_fd_events( sock->fd, ev );
755 }
756
757 static unsigned int afd_poll_flag_to_win32( unsigned int flags )
758 {
759 static const unsigned int map[] =
760 {
761 FD_READ, /* READ */
762 FD_OOB, /* OOB */
763 FD_WRITE, /* WRITE */
764 FD_CLOSE, /* HUP */
765 FD_CLOSE, /* RESET */
766 0, /* CLOSE */
767 FD_CONNECT, /* CONNECT */
768 FD_ACCEPT, /* ACCEPT */
769 FD_CONNECT, /* CONNECT_ERR */
770 };
771
772 unsigned int i, ret = 0;
773
774 for (i = 0; i < ARRAY_SIZE(map); ++i)
775 {
776 if (flags & (1 << i)) ret |= map[i];
777 }
778
779 return ret;
780 }
781
782 /* wake anybody waiting on the socket event or send the associated message */
783 static void sock_wake_up( struct sock *sock )
784 {
785 unsigned int events = sock->pending_events & sock->mask;
786 int i;
787
788 if (sock->event)
789 {
790 if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
791 if (events)
792 set_event( sock->event );
793 }
794 if (sock->window)
795 {
796 if (debug_level) fprintf(stderr, "signalling events %x win %08x\n", events, sock->window );
797 for (i = 0; i < ARRAY_SIZE(event_bitorder); i++)
798 {
799 enum afd_poll_bit event = event_bitorder[i];
800 if (events & (1 << event))
801 {
802 lparam_t lparam = afd_poll_flag_to_win32(1 << event) | (sock_get_error( sock->errors[event] ) << 16);
803 post_message( sock->window, sock->message, sock->wparam, lparam );
804 }
805 }
806 sock->pending_events = 0;
807 sock_reselect( sock );
808 }
809 }
810
811 static inline int sock_error( struct sock *sock )
812 {
813 int error = 0;
814 socklen_t len = sizeof(error);
815
816 getsockopt( get_unix_fd(sock->fd), SOL_SOCKET, SO_ERROR, (void *)&error, &len);
817
818 switch (sock->state)
819 {
820 case SOCK_UNCONNECTED:
821 break;
822
823 case SOCK_CONNECTING:
824 if (error)
825 sock->errors[AFD_POLL_BIT_CONNECT_ERR] = error;
826 else
827 error = sock->errors[AFD_POLL_BIT_CONNECT_ERR];
828 break;
829
830 case SOCK_LISTENING:
831 if (error)
832 sock->errors[AFD_POLL_BIT_ACCEPT] = error;
833 else
834 error = sock->errors[AFD_POLL_BIT_ACCEPT];
835 break;
836
837 case SOCK_CONNECTED:
838 case SOCK_CONNECTIONLESS:
839 if (error == ECONNRESET || error == EPIPE)
840 {
841 sock->reset = 1;
842 error = 0;
843 }
844 else if (error)
845 sock->errors[AFD_POLL_BIT_HUP] = error;
846 else
847 error = sock->errors[AFD_POLL_BIT_HUP];
848 break;
849 }
850
851 return error;
852 }
853
854 static void free_accept_req( void *private )
855 {
856 struct accept_req *req = private;
857 list_remove( &req->entry );
858 if (req->acceptsock)
859 {
860 req->acceptsock->accept_recv_req = NULL;
861 release_object( req->acceptsock );
862 }
863 release_object( req->async );
864 release_object( req->iosb );
865 release_object( req->sock );
866 free( req );
867 }
868
869 static void fill_accept_output( struct accept_req *req )
870 {
871 const data_size_t out_size = req->iosb->out_size;
872 struct async *async = req->async;
873 union unix_sockaddr unix_addr;
874 struct WS_sockaddr *win_addr;
875 unsigned int remote_len;
876 socklen_t unix_len;
877 int fd, size = 0;
878 char *out_data;
879 int win_len;
880
881 if (!(out_data = mem_alloc( out_size )))
882 {
883 async_terminate( async, get_error() );
884 return;
885 }
886
887 fd = get_unix_fd( req->acceptsock->fd );
888
889 if (req->recv_len && (size = recv( fd, out_data, req->recv_len, 0 )) < 0)
890 {
891 if (!req->accepted && errno == EWOULDBLOCK)
892 {
893 req->accepted = 1;
894 sock_reselect( req->acceptsock );
895 return;
896 }
897
898 async_terminate( async, sock_get_ntstatus( errno ) );
899 free( out_data );
900 return;
901 }
902
903 if (req->local_len)
904 {
905 if (req->local_len < sizeof(int))
906 {
907 async_terminate( async, STATUS_BUFFER_TOO_SMALL );
908 free( out_data );
909 return;
910 }
911
912 unix_len = sizeof(unix_addr);
913 win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + sizeof(int));
914 if (getsockname( fd, &unix_addr.addr, &unix_len ) < 0 ||
915 (win_len = sockaddr_from_unix( &unix_addr, win_addr, req->local_len - sizeof(int) )) < 0)
916 {
917 async_terminate( async, sock_get_ntstatus( errno ) );
918 free( out_data );
919 return;
920 }
921 memcpy( out_data + req->recv_len, &win_len, sizeof(int) );
922 }
923
924 unix_len = sizeof(unix_addr);
925 win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + req->local_len + sizeof(int));
926 remote_len = out_size - req->recv_len - req->local_len;
927 if (getpeername( fd, &unix_addr.addr, &unix_len ) < 0 ||
928 (win_len = sockaddr_from_unix( &unix_addr, win_addr, remote_len - sizeof(int) )) < 0)
929 {
930 async_terminate( async, sock_get_ntstatus( errno ) );
931 free( out_data );
932 return;
933 }
934 memcpy( out_data + req->recv_len + req->local_len, &win_len, sizeof(int) );
935
936 async_request_complete( req->async, STATUS_SUCCESS, size, out_size, out_data );
937 }
938
939 static void complete_async_accept( struct sock *sock, struct accept_req *req )
940 {
941 struct sock *acceptsock = req->acceptsock;
942 struct async *async = req->async;
943
944 if (debug_level) fprintf( stderr, "completing accept request for socket %p\n", sock );
945
946 if (acceptsock)
947 {
948 if (!accept_into_socket( sock, acceptsock ))
949 {
950 async_terminate( async, get_error() );
951 return;
952 }
953 fill_accept_output( req );
954 }
955 else
956 {
957 obj_handle_t handle;
958
959 if (!(acceptsock = accept_socket( sock )))
960 {
961 async_terminate( async, get_error() );
962 return;
963 }
964 handle = alloc_handle_no_access_check( async_get_thread( async )->process, &acceptsock->obj,
965 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
966 acceptsock->wparam = handle;
967 sock_reselect( acceptsock );
968 release_object( acceptsock );
969 if (!handle)
970 {
971 async_terminate( async, get_error() );
972 return;
973 }
974
975 async_request_complete_alloc( req->async, STATUS_SUCCESS, 0, sizeof(handle), &handle );
976 }
977 }
978
979 static void complete_async_accept_recv( struct accept_req *req )
980 {
981 if (debug_level) fprintf( stderr, "completing accept recv request for socket %p\n", req->acceptsock );
982
983 assert( req->recv_len );
984
985 fill_accept_output( req );
986 }
987
988 static void free_connect_req( void *private )
989 {
990 struct connect_req *req = private;
991
992 req->sock->connect_req = NULL;
993 release_object( req->async );
994 release_object( req->iosb );
995 release_object( req->sock );
996 free( req );
997 }
998
999 static void complete_async_connect( struct sock *sock )
1000 {
1001 struct connect_req *req = sock->connect_req;
1002 const char *in_buffer;
1003 size_t len;
1004 int ret;
1005
1006 if (debug_level) fprintf( stderr, "completing connect request for socket %p\n", sock );
1007
1008 if (!req->send_len)
1009 {
1010 async_terminate( req->async, STATUS_SUCCESS );
1011 return;
1012 }
1013
1014 in_buffer = (const char *)req->iosb->in_data + sizeof(struct afd_connect_params) + req->addr_len;
1015 len = req->send_len - req->send_cursor;
1016
1017 ret = send( get_unix_fd( sock->fd ), in_buffer + req->send_cursor, len, 0 );
1018 if (ret < 0 && errno != EWOULDBLOCK)
1019 async_terminate( req->async, sock_get_ntstatus( errno ) );
1020 else if (ret == len)
1021 async_request_complete( req->async, STATUS_SUCCESS, req->send_len, 0, NULL );
1022 else
1023 req->send_cursor += ret;
1024 }
1025
1026 static void free_poll_req( void *private )
1027 {
1028 struct poll_req *req = private;
1029 unsigned int i;
1030
1031 if (req->timeout) remove_timeout_user( req->timeout );
1032
1033 for (i = 0; i < req->count; ++i)
1034 release_object( req->sockets[i].sock );
1035 release_object( req->async );
1036 release_object( req->iosb );
1037 list_remove( &req->entry );
1038 free( req );
1039 }
1040
1041 static int is_oobinline( struct sock *sock )
1042 {
1043 int oobinline;
1044 socklen_t len = sizeof(oobinline);
1045 return !getsockopt( get_unix_fd( sock->fd ), SOL_SOCKET, SO_OOBINLINE, (char *)&oobinline, &len ) && oobinline;
1046 }
1047
1048 static int get_poll_flags( struct sock *sock, int event )
1049 {
1050 int flags = 0;
1051
1052 /* A connection-mode socket which has never been connected does not return
1053 * write or hangup events, but Linux reports POLLOUT | POLLHUP. */
1054 if (sock->state == SOCK_UNCONNECTED)
1055 event &= ~(POLLOUT | POLLHUP);
1056
1057 if (event & POLLIN)
1058 {
1059 if (sock->state == SOCK_LISTENING)
1060 flags |= AFD_POLL_ACCEPT;
1061 else
1062 flags |= AFD_POLL_READ;
1063 }
1064 if (event & POLLPRI)
1065 flags |= is_oobinline( sock ) ? AFD_POLL_READ : AFD_POLL_OOB;
1066 if (event & POLLOUT)
1067 flags |= AFD_POLL_WRITE;
1068 if (sock->state == SOCK_CONNECTED)
1069 flags |= AFD_POLL_CONNECT;
1070 if (event & POLLHUP)
1071 flags |= AFD_POLL_HUP;
1072 if (event & POLLERR)
1073 flags |= AFD_POLL_CONNECT_ERR;
1074 if (sock->reset)
1075 flags |= AFD_POLL_RESET;
1076
1077 return flags;
1078 }
1079
1080 static void complete_async_poll( struct poll_req *req, unsigned int status )
1081 {
1082 unsigned int i, signaled_count = 0;
1083
1084 for (i = 0; i < req->count; ++i)
1085 {
1086 struct sock *sock = req->sockets[i].sock;
1087
1088 if (sock->main_poll == req)
1089 sock->main_poll = NULL;
1090 }
1091
1092 if (!status)
1093 {
1094 for (i = 0; i < req->count; ++i)
1095 {
1096 if (req->sockets[i].flags)
1097 ++signaled_count;
1098 }
1099 }
1100
1101 if (is_machine_64bit( async_get_thread( req->async )->process->machine ))
1102 {
1103 size_t output_size = offsetof( struct afd_poll_params_64, sockets[signaled_count] );
1104 struct afd_poll_params_64 *output;
1105
1106 if (!(output = mem_alloc( output_size )))
1107 {
1108 async_terminate( req->async, get_error() );
1109 return;
1110 }
1111 memset( output, 0, output_size );
1112 output->timeout = req->orig_timeout;
1113 output->exclusive = req->exclusive;
1114 for (i = 0; i < req->count; ++i)
1115 {
1116 if (!req->sockets[i].flags) continue;
1117 output->sockets[output->count].socket = req->sockets[i].handle;
1118 output->sockets[output->count].flags = req->sockets[i].flags;
1119 output->sockets[output->count].status = req->sockets[i].status;
1120 ++output->count;
1121 }
1122 assert( output->count == signaled_count );
1123
1124 async_request_complete( req->async, status, output_size, output_size, output );
1125 }
1126 else
1127 {
1128 size_t output_size = offsetof( struct afd_poll_params_32, sockets[signaled_count] );
1129 struct afd_poll_params_32 *output;
1130
1131 if (!(output = mem_alloc( output_size )))
1132 {
1133 async_terminate( req->async, get_error() );
1134 return;
1135 }
1136 memset( output, 0, output_size );
1137 output->timeout = req->orig_timeout;
1138 output->exclusive = req->exclusive;
1139 for (i = 0; i < req->count; ++i)
1140 {
1141 if (!req->sockets[i].flags) continue;
1142 output->sockets[output->count].socket = req->sockets[i].handle;
1143 output->sockets[output->count].flags = req->sockets[i].flags;
1144 output->sockets[output->count].status = req->sockets[i].status;
1145 ++output->count;
1146 }
1147 assert( output->count == signaled_count );
1148
1149 async_request_complete( req->async, status, output_size, output_size, output );
1150 }
1151 }
1152
1153 static void complete_async_polls( struct sock *sock, int event, int error )
1154 {
1155 int flags = get_poll_flags( sock, event );
1156 struct poll_req *req, *next;
1157
1158 LIST_FOR_EACH_ENTRY_SAFE( req, next, &poll_list, struct poll_req, entry )
1159 {
1160 unsigned int i;
1161
1162 if (req->iosb->status != STATUS_PENDING) continue;
1163
1164 for (i = 0; i < req->count; ++i)
1165 {
1166 if (req->sockets[i].sock != sock) continue;
1167 if (!(req->sockets[i].mask & flags)) continue;
1168
1169 if (debug_level)
1170 fprintf( stderr, "completing poll for socket %p, wanted %#x got %#x\n",
1171 sock, req->sockets[i].mask, flags );
1172
1173 req->sockets[i].flags = req->sockets[i].mask & flags;
1174 req->sockets[i].status = sock_get_ntstatus( error );
1175
1176 if (req->pending)
1177 {
1178 complete_async_poll( req, STATUS_SUCCESS );
1179 break;
1180 }
1181 }
1182 }
1183 }
1184
1185 static void async_poll_timeout( void *private )
1186 {
1187 struct poll_req *req = private;
1188
1189 req->timeout = NULL;
1190
1191 if (req->iosb->status != STATUS_PENDING) return;
1192
1193 complete_async_poll( req, STATUS_TIMEOUT );
1194 }
1195
1196 static int sock_dispatch_asyncs( struct sock *sock, int event, int error )
1197 {
1198 if (event & (POLLIN | POLLPRI))
1199 {
1200 struct accept_req *req;
1201
1202 LIST_FOR_EACH_ENTRY( req, &sock->accept_list, struct accept_req, entry )
1203 {
1204 if (req->iosb->status == STATUS_PENDING && !req->accepted)
1205 {
1206 complete_async_accept( sock, req );
1207 event &= ~POLLIN;
1208 break;
1209 }
1210 }
1211
1212 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1213 complete_async_accept_recv( sock->accept_recv_req );
1214 }
1215
1216 if ((event & POLLOUT) && sock->connect_req && sock->connect_req->iosb->status == STATUS_PENDING)
1217 complete_async_connect( sock );
1218
1219 if ((event & (POLLIN | POLLPRI)) && async_queued( &sock->read_q ))
1220 {
1221 if (async_waiting( &sock->read_q ))
1222 {
1223 if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
1224 async_wake_up( &sock->read_q, STATUS_ALERTED );
1225 }
1226 event &= ~(POLLIN | POLLPRI);
1227 }
1228
1229 if ((event & POLLOUT) && async_queued( &sock->write_q ))
1230 {
1231 if (async_waiting( &sock->write_q ))
1232 {
1233 if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
1234 async_wake_up( &sock->write_q, STATUS_ALERTED );
1235 }
1236 event &= ~POLLOUT;
1237 }
1238
1239 if (event & (POLLERR | POLLHUP))
1240 {
1241 int status = sock_get_ntstatus( error );
1242 struct accept_req *req, *next;
1243
1244 async_wake_up( &sock->read_q, status );
1245 async_wake_up( &sock->write_q, status );
1246
1247 LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry )
1248 {
1249 if (req->iosb->status == STATUS_PENDING)
1250 async_terminate( req->async, status );
1251 }
1252
1253 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1254 async_terminate( sock->accept_recv_req->async, status );
1255
1256 if (sock->connect_req)
1257 async_terminate( sock->connect_req->async, status );
1258 }
1259
1260 if (sock->reset)
1261 {
1262 async_wake_up( &sock->read_q, STATUS_CONNECTION_RESET );
1263 async_wake_up( &sock->write_q, STATUS_CONNECTION_RESET );
1264
1265 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1266 async_terminate( sock->accept_recv_req->async, STATUS_CONNECTION_RESET );
1267 }
1268
1269 return event;
1270 }
1271
1272 static void post_socket_event( struct sock *sock, enum afd_poll_bit event_bit )
1273 {
1274 unsigned int event = (1 << event_bit);
1275
1276 if (!(sock->reported_events & event))
1277 {
1278 sock->pending_events |= event;
1279 sock->reported_events |= event;
1280 }
1281 }
1282
1283 static void sock_dispatch_events( struct sock *sock, enum connection_state prevstate, int event )
1284 {
1285 switch (prevstate)
1286 {
1287 case SOCK_UNCONNECTED:
1288 break;
1289
1290 case SOCK_CONNECTING:
1291 if (event & POLLOUT)
1292 post_socket_event( sock, AFD_POLL_BIT_CONNECT );
1293 if (event & (POLLERR | POLLHUP))
1294 post_socket_event( sock, AFD_POLL_BIT_CONNECT_ERR );
1295 break;
1296
1297 case SOCK_LISTENING:
1298 if (event & (POLLIN | POLLERR | POLLHUP))
1299 post_socket_event( sock, AFD_POLL_BIT_ACCEPT );
1300 break;
1301
1302 case SOCK_CONNECTED:
1303 case SOCK_CONNECTIONLESS:
1304 if (sock->reset)
1305 post_socket_event( sock, AFD_POLL_BIT_RESET );
1306
1307 if (event & POLLIN)
1308 post_socket_event( sock, AFD_POLL_BIT_READ );
1309
1310 if (event & POLLOUT)
1311 post_socket_event( sock, AFD_POLL_BIT_WRITE );
1312
1313 if (event & POLLPRI)
1314 post_socket_event( sock, AFD_POLL_BIT_OOB );
1315
1316 if (event & (POLLERR | POLLHUP))
1317 post_socket_event( sock, AFD_POLL_BIT_HUP );
1318 break;
1319 }
1320
1321 sock_wake_up( sock );
1322 }
1323
1324 static void sock_poll_event( struct fd *fd, int event )
1325 {
1326 struct sock *sock = get_fd_user( fd );
1327 int hangup_seen = 0;
1328 enum connection_state prevstate = sock->state;
1329 int error = 0;
1330
1331 assert( sock->obj.ops == &sock_ops );
1332 if (debug_level)
1333 fprintf(stderr, "socket %p select event: %x\n", sock, event);
1334
1335 if (event & (POLLERR | POLLHUP))
1336 error = sock_error( sock );
1337
1338 switch (sock->state)
1339 {
1340 case SOCK_UNCONNECTED:
1341 break;
1342
1343 case SOCK_CONNECTING:
1344 if (event & (POLLERR|POLLHUP))
1345 {
1346 sock->state = SOCK_UNCONNECTED;
1347 event &= ~POLLOUT;
1348 }
1349 else if (event & POLLOUT)
1350 {
1351 sock->state = SOCK_CONNECTED;
1352 sock->connect_time = current_time;
1353 sock->errors[AFD_POLL_BIT_CONNECT_ERR] = 0;
1354 }
1355 break;
1356
1357 case SOCK_LISTENING:
1358 break;
1359
1360 case SOCK_CONNECTED:
1361 case SOCK_CONNECTIONLESS:
1362 if (sock->reset)
1363 event &= ~(POLLIN | POLLERR | POLLHUP);
1364
1365 if (sock->type == WS_SOCK_STREAM && (event & POLLIN))
1366 {
1367 char dummy;
1368 int nr;
1369
1370 /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
1371 * has been closed, so we need to check for it explicitly here */
1372 nr = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
1373 if ( nr == 0 )
1374 {
1375 hangup_seen = 1;
1376 event &= ~POLLIN;
1377 }
1378 else if ( nr < 0 )
1379 {
1380 event &= ~POLLIN;
1381 /* EAGAIN can happen if an async recv() falls between the server's poll()
1382 call and the invocation of this routine */
1383 if (errno == ECONNRESET || errno == EPIPE)
1384 {
1385 sock->reset = 1;
1386 }
1387 else if (errno != EAGAIN)
1388 {
1389 error = errno;
1390 event |= POLLERR;
1391 sock->errors[AFD_POLL_BIT_HUP] = error;
1392 if ( debug_level )
1393 fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
1394 }
1395 }
1396 }
1397
1398 if (hangup_seen || (sock_shutdown_type == SOCK_SHUTDOWN_POLLHUP && (event & POLLHUP)))
1399 {
1400 sock->hangup = 1;
1401 }
1402 else if (event & (POLLHUP | POLLERR))
1403 {
1404 sock->aborted = 1;
1405
1406 if (debug_level)
1407 fprintf( stderr, "socket %p aborted by error %d, event %#x\n", sock, error, event );
1408 }
1409
1410 if (hangup_seen)
1411 event |= POLLHUP;
1412 break;
1413 }
1414
1415 event = sock_dispatch_asyncs( sock, event, error );
1416 sock_dispatch_events( sock, prevstate, event );
1417 complete_async_polls( sock, event, error );
1418
1419 sock_reselect( sock );
1420 }
1421
1422 static void sock_dump( struct object *obj, int verbose )
1423 {
1424 struct sock *sock = (struct sock *)obj;
1425 assert( obj->ops == &sock_ops );
1426 fprintf( stderr, "Socket fd=%p, state=%x, mask=%x, pending=%x, reported=%x\n",
1427 sock->fd, sock->state,
1428 sock->mask, sock->pending_events, sock->reported_events );
1429 }
1430
1431 static int poll_flags_from_afd( struct sock *sock, int flags )
1432 {
1433 int ev = 0;
1434
1435 /* A connection-mode socket which has never been connected does
1436 * not return write or hangup events, but Linux returns
1437 * POLLOUT | POLLHUP. */
1438 if (sock->state == SOCK_UNCONNECTED)
1439 return -1;
1440
1441 if (flags & (AFD_POLL_READ | AFD_POLL_ACCEPT))
1442 ev |= POLLIN;
1443 if ((flags & AFD_POLL_HUP) && sock->type == WS_SOCK_STREAM)
1444 ev |= POLLIN;
1445 if (flags & AFD_POLL_OOB)
1446 ev |= is_oobinline( sock ) ? POLLIN : POLLPRI;
1447 if (flags & AFD_POLL_WRITE)
1448 ev |= POLLOUT;
1449
1450 return ev;
1451 }
1452
1453 static int sock_get_poll_events( struct fd *fd )
1454 {
1455 struct sock *sock = get_fd_user( fd );
1456 unsigned int mask = sock->mask & ~sock->reported_events;
1457 struct poll_req *req;
1458 int ev = 0;
1459
1460 assert( sock->obj.ops == &sock_ops );
1461
1462 if (!sock->type) /* not initialized yet */
1463 return -1;
1464
1465 LIST_FOR_EACH_ENTRY( req, &poll_list, struct poll_req, entry )
1466 {
1467 unsigned int i;
1468
1469 for (i = 0; i < req->count; ++i)
1470 {
1471 if (req->sockets[i].sock != sock) continue;
1472
1473 ev |= poll_flags_from_afd( sock, req->sockets[i].mask );
1474 }
1475 }
1476
1477 switch (sock->state)
1478 {
1479 case SOCK_UNCONNECTED:
1480 /* A connection-mode Windows socket which has never been connected does
1481 * not return any events, but Linux returns POLLOUT | POLLHUP. Hence we
1482 * need to return -1 here, to prevent the socket from being polled on at
1483 * all. */
1484 return -1;
1485
1486 case SOCK_CONNECTING:
1487 return POLLOUT;
1488
1489 case SOCK_LISTENING:
1490 if (!list_empty( &sock->accept_list ) || (mask & AFD_POLL_ACCEPT))
1491 ev |= POLLIN;
1492 break;
1493
1494 case SOCK_CONNECTED:
1495 case SOCK_CONNECTIONLESS:
1496 if (sock->hangup && sock->wr_shutdown && !sock->wr_shutdown_pending)
1497 {
1498 /* Linux returns POLLHUP if a socket is both SHUT_RD and SHUT_WR, or
1499 * if both the socket and its peer are SHUT_WR.
1500 *
1501 * We don't use SHUT_RD, so we can only encounter this in the latter
1502 * case. In that case there can't be any pending read requests (they
1503 * would have already been completed with a length of zero), the
1504 * above condition ensures that we don't have any pending write
1505 * requests, and nothing that can change about the socket state that
1506 * would complete a pending poll request. */
1507 return -1;
1508 }
1509
1510 if (sock->aborted || sock->reset)
1511 return -1;
1512
1513 if (sock->accept_recv_req)
1514 {
1515 ev |= POLLIN;
1516 }
1517 else if (async_queued( &sock->read_q ))
1518 {
1519 /* Clear POLLIN and POLLPRI if we have an alerted async, even if
1520 * we're polling this socket for READ or OOB. We can't signal the
1521 * poll if the pending async will read all of the data [cf. the
1522 * matching logic in sock_dispatch_asyncs()], but we also don't
1523 * want to spin polling for POLLIN if we're not going to use it. */
1524 if (async_waiting( &sock->read_q ))
1525 ev |= POLLIN | POLLPRI;
1526 else
1527 ev &= ~(POLLIN | POLLPRI);
1528 }
1529 else
1530 {
1531 /* Don't ask for POLLIN if we got a hangup. We won't receive more
1532 * data anyway, but we will get POLLIN if SOCK_SHUTDOWN_EOF. */
1533 if (!sock->hangup)
1534 {
1535 if (mask & AFD_POLL_READ)
1536 ev |= POLLIN;
1537 if (mask & AFD_POLL_OOB)
1538 ev |= POLLPRI;
1539 }
1540
1541 /* We use POLLIN with 0 bytes recv() as hangup indication for stream sockets. */
1542 if (sock->state == SOCK_CONNECTED && (mask & AFD_POLL_HUP) && !(sock->reported_events & AFD_POLL_READ))
1543 ev |= POLLIN;
1544 }
1545
1546 if (async_queued( &sock->write_q ))
1547 {
1548 /* As with read asyncs above, clear POLLOUT if we have an alerted
1549 * async. */
1550 if (async_waiting( &sock->write_q ))
1551 ev |= POLLOUT;
1552 else
1553 ev &= ~POLLOUT;
1554 }
1555 else if (!sock->wr_shutdown && (mask & AFD_POLL_WRITE))
1556 {
1557 ev |= POLLOUT;
1558 }
1559
1560 break;
1561 }
1562
1563 return ev;
1564 }
1565
1566 static enum server_fd_type sock_get_fd_type( struct fd *fd )
1567 {
1568 return FD_TYPE_SOCKET;
1569 }
1570
1571 static void sock_cancel_async( struct fd *fd, struct async *async )
1572 {
1573 struct poll_req *req;
1574
1575 LIST_FOR_EACH_ENTRY( req, &poll_list, struct poll_req, entry )
1576 {
1577 unsigned int i;
1578
1579 if (req->async != async)
1580 continue;
1581
1582 for (i = 0; i < req->count; i++)
1583 {
1584 struct sock *sock = req->sockets[i].sock;
1585
1586 if (sock->main_poll == req)
1587 sock->main_poll = NULL;
1588 }
1589 }
1590
1591 async_terminate( async, STATUS_CANCELLED );
1592 }
1593
1594 static void sock_reselect_async( struct fd *fd, struct async_queue *queue )
1595 {
1596 struct sock *sock = get_fd_user( fd );
1597
1598 if (sock->wr_shutdown_pending && list_empty( &sock->write_q.queue ))
1599 {
1600 shutdown( get_unix_fd( sock->fd ), SHUT_WR );
1601 sock->wr_shutdown_pending = 0;
1602 }
1603
1604 /* Don't reselect the ifchange queue; we always ask for POLLIN.
1605 * Don't reselect an uninitialized socket; we can't call set_fd_events() on
1606 * a pseudo-fd. */
1607 if (queue != &sock->ifchange_q && sock->type)
1608 sock_reselect( sock );
1609 }
1610
1611 static struct fd *sock_get_fd( struct object *obj )
1612 {
1613 struct sock *sock = (struct sock *)obj;
1614 return (struct fd *)grab_object( sock->fd );
1615 }
1616
1617 static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
1618 {
1619 struct sock *sock = (struct sock *)obj;
1620
1621 if (sock->obj.handle_count == 1) /* last handle */
1622 {
1623 struct accept_req *accept_req, *accept_next;
1624 struct poll_req *poll_req, *poll_next;
1625
1626 if (sock->accept_recv_req)
1627 async_terminate( sock->accept_recv_req->async, STATUS_CANCELLED );
1628
1629 LIST_FOR_EACH_ENTRY_SAFE( accept_req, accept_next, &sock->accept_list, struct accept_req, entry )
1630 async_terminate( accept_req->async, STATUS_CANCELLED );
1631
1632 if (sock->connect_req)
1633 async_terminate( sock->connect_req->async, STATUS_CANCELLED );
1634
1635 LIST_FOR_EACH_ENTRY_SAFE( poll_req, poll_next, &poll_list, struct poll_req, entry )
1636 {
1637 struct iosb *iosb = poll_req->iosb;
1638 BOOL signaled = FALSE;
1639 unsigned int i;
1640
1641 if (iosb->status != STATUS_PENDING) continue;
1642
1643 for (i = 0; i < poll_req->count; ++i)
1644 {
1645 if (poll_req->sockets[i].sock == sock)
1646 {
1647 signaled = TRUE;
1648 poll_req->sockets[i].flags = AFD_POLL_CLOSE;
1649 poll_req->sockets[i].status = 0;
1650 }
1651 }
1652
1653 if (signaled) complete_async_poll( poll_req, STATUS_SUCCESS );
1654 }
1655 }
1656
1657 return 1;
1658 }
1659
1660 static void sock_destroy( struct object *obj )
1661 {
1662 struct sock *sock = (struct sock *)obj;
1663 unsigned int i;
1664
1665 assert( obj->ops == &sock_ops );
1666
1667 /* FIXME: special socket shutdown stuff? */
1668
1669 for (i = 0; i < 2; ++i)
1670 {
1671 if (sock->bound_addr[i] && --sock->bound_addr[i]->reuse_count <= 0)
1672 {
1673 rb_remove( &bound_addresses_tree, &sock->bound_addr[i]->entry );
1674 free( sock->bound_addr[i] );
1675 }
1676 }
1677
1678 if ( sock->deferred )
1679 release_object( sock->deferred );
1680
1681 async_wake_up( &sock->ifchange_q, STATUS_CANCELLED );
1682 sock_release_ifchange( sock );
1683 free_async_queue( &sock->read_q );
1684 free_async_queue( &sock->write_q );
1685 free_async_queue( &sock->ifchange_q );
1686 free_async_queue( &sock->accept_q );
1687 free_async_queue( &sock->connect_q );
1688 free_async_queue( &sock->poll_q );
1689 if (sock->event) release_object( sock->event );
1690 if (sock->fd) release_object( sock->fd );
1691 }
1692
1693 static struct sock *create_socket(void)
1694 {
1695 struct sock *sock;
1696
1697 if (!(sock = alloc_object( &sock_ops ))) return NULL;
1698 sock->fd = NULL;
1699 sock->state = SOCK_UNCONNECTED;
1700 sock->mask = 0;
1701 sock->pending_events = 0;
1702 sock->reported_events = 0;
1703 sock->proto = 0;
1704 sock->type = 0;
1705 sock->family = 0;
1706 sock->event = NULL;
1707 sock->window = 0;
1708 sock->message = 0;
1709 sock->wparam = 0;
1710 sock->connect_time = 0;
1711 sock->deferred = NULL;
1712 sock->ifchange_obj = NULL;
1713 sock->accept_recv_req = NULL;
1714 sock->connect_req = NULL;
1715 sock->main_poll = NULL;
1716 memset( &sock->addr, 0, sizeof(sock->addr) );
1717 sock->addr_len = 0;
1718 sock->rd_shutdown = 0;
1719 sock->wr_shutdown = 0;
1720 sock->wr_shutdown_pending = 0;
1721 sock->hangup = 0;
1722 sock->aborted = 0;
1723 sock->nonblocking = 0;
1724 sock->bound = 0;
1725 sock->reset = 0;
1726 sock->reuseaddr = 0;
1727 sock->exclusiveaddruse = 0;
1728 sock->rcvbuf = 0;
1729 sock->sndbuf = 0;
1730 sock->rcvtimeo = 0;
1731 sock->sndtimeo = 0;
1732 sock->icmp_fixup_data_len = 0;
1733 sock->bound_addr[0] = sock->bound_addr[1] = NULL;
1734 init_async_queue( &sock->read_q );
1735 init_async_queue( &sock->write_q );
1736 init_async_queue( &sock->ifchange_q );
1737 init_async_queue( &sock->accept_q );
1738 init_async_queue( &sock->connect_q );
1739 init_async_queue( &sock->poll_q );
1740 memset( sock->errors, 0, sizeof(sock->errors) );
1741 list_init( &sock->accept_list );
1742 return sock;
1743 }
1744
1745 static int get_unix_family( int family )
1746 {
1747 switch (family)
1748 {
1749 case WS_AF_INET: return AF_INET;
1750 case WS_AF_INET6: return AF_INET6;
1751 #ifdef HAS_IPX
1752 case WS_AF_IPX: return AF_IPX;
1753 #endif
1754 #ifdef AF_IRDA
1755 case WS_AF_IRDA: return AF_IRDA;
1756 #endif
1757 case WS_AF_UNSPEC: return AF_UNSPEC;
1758 default: return -1;
1759 }
1760 }
1761
1762 static int get_unix_type( int type )
1763 {
1764 switch (type)
1765 {
1766 case WS_SOCK_DGRAM: return SOCK_DGRAM;
1767 case WS_SOCK_RAW: return SOCK_RAW;
1768 case WS_SOCK_STREAM: return SOCK_STREAM;
1769 default: return -1;
1770 }
1771 }
1772
1773 static int get_unix_protocol( int protocol )
1774 {
1775 if (protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
1776 return protocol;
1777
1778 switch (protocol)
1779 {
1780 case WS_IPPROTO_ICMP: return IPPROTO_ICMP;
1781 case WS_IPPROTO_IGMP: return IPPROTO_IGMP;
1782 case WS_IPPROTO_IP: return IPPROTO_IP;
1783 case WS_IPPROTO_IPV4: return IPPROTO_IPIP;
1784 case WS_IPPROTO_IPV6: return IPPROTO_IPV6;
1785 case WS_IPPROTO_RAW: return IPPROTO_RAW;
1786 case WS_IPPROTO_TCP: return IPPROTO_TCP;
1787 case WS_IPPROTO_UDP: return IPPROTO_UDP;
1788 default: return -1;
1789 }
1790 }
1791
1792 static void set_dont_fragment( int fd, int level, int value )
1793 {
1794 int optname;
1795
1796 if (level == IPPROTO_IP)
1797 {
1798 #ifdef IP_DONTFRAG
1799 optname = IP_DONTFRAG;
1800 #elif defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) && defined(IP_PMTUDISC_DONT)
1801 optname = IP_MTU_DISCOVER;
1802 value = value ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
1803 #else
1804 return;
1805 #endif
1806 }
1807 else
1808 {
1809 #ifdef IPV6_DONTFRAG
1810 optname = IPV6_DONTFRAG;
1811 #elif defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) && defined(IPV6_PMTUDISC_DONT)
1812 optname = IPV6_MTU_DISCOVER;
1813 value = value ? IPV6_PMTUDISC_DO : IPV6_PMTUDISC_DONT;
1814 #else
1815 return;
1816 #endif
1817 }
1818
1819 setsockopt( fd, level, optname, &value, sizeof(value) );
1820 }
1821
1822 static int init_socket( struct sock *sock, int family, int type, int protocol )
1823 {
1824 unsigned int options = 0;
1825 int sockfd, unix_type, unix_family, unix_protocol, value;
1826 socklen_t len;
1827
1828 unix_family = get_unix_family( family );
1829 unix_type = get_unix_type( type );
1830 unix_protocol = get_unix_protocol( protocol );
1831
1832 if (unix_protocol < 0)
1833 {
1834 if (type && unix_type < 0)
1835 set_win32_error( WSAESOCKTNOSUPPORT );
1836 else
1837 set_win32_error( WSAEPROTONOSUPPORT );
1838 return -1;
1839 }
1840 if (unix_family < 0)
1841 {
1842 if (family >= 0 && unix_type < 0)
1843 set_win32_error( WSAESOCKTNOSUPPORT );
1844 else
1845 set_win32_error( WSAEAFNOSUPPORT );
1846 return -1;
1847 }
1848
1849 sockfd = socket( unix_family, unix_type, unix_protocol );
1850
1851 #ifdef linux
1852 if (sockfd == -1 && errno == EPERM && unix_family == AF_INET
1853 && unix_type == SOCK_RAW && unix_protocol == IPPROTO_ICMP)
1854 {
1855 sockfd = socket( unix_family, SOCK_DGRAM, unix_protocol );
1856 if (sockfd != -1)
1857 {
1858 const int val = 1;
1859
1860 setsockopt( sockfd, IPPROTO_IP, IP_RECVTTL, (const char *)&val, sizeof(val) );
1861 setsockopt( sockfd, IPPROTO_IP, IP_RECVTOS, (const char *)&val, sizeof(val) );
1862 setsockopt( sockfd, IPPROTO_IP, IP_PKTINFO, (const char *)&val, sizeof(val) );
1863 }
1864 }
1865 #endif
1866
1867 if (sockfd == -1)
1868 {
1869 if (errno == EINVAL) set_win32_error( WSAESOCKTNOSUPPORT );
1870 else set_win32_error( sock_get_error( errno ));
1871 return -1;
1872 }
1873 fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
1874
1875 if (family == WS_AF_IPX && protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
1876 {
1877 #ifdef HAS_IPX
1878 int ipx_type = protocol - WS_NSPROTO_IPX;
1879
1880 #ifdef SOL_IPX
1881 setsockopt( sockfd, SOL_IPX, IPX_TYPE, &ipx_type, sizeof(ipx_type) );
1882 #else
1883 struct ipx val;
1884 /* Should we retrieve val using a getsockopt call and then
1885 * set the modified one? */
1886 val.ipx_pt = ipx_type;
1887 setsockopt( sockfd, 0, SO_DEFAULT_HEADERS, &val, sizeof(val) );
1888 #endif
1889 #endif
1890 }
1891
1892 if (unix_family == AF_INET || unix_family == AF_INET6)
1893 {
1894 /* ensure IP_DONTFRAGMENT is disabled for SOCK_DGRAM and SOCK_RAW, enabled for SOCK_STREAM */
1895 if (unix_type == SOCK_DGRAM || unix_type == SOCK_RAW) /* in Linux the global default can be enabled */
1896 set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, FALSE );
1897 else if (unix_type == SOCK_STREAM)
1898 set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, TRUE );
1899 }
1900
1901 #ifdef IPV6_V6ONLY
1902 if (unix_family == AF_INET6)
1903 {
1904 static const int enable = 1;
1905 setsockopt( sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable) );
1906 }
1907 #endif
1908
1909 len = sizeof(value);
1910 if (!getsockopt( sockfd, SOL_SOCKET, SO_RCVBUF, &value, &len ))
1911 sock->rcvbuf = value;
1912
1913 len = sizeof(value);
1914 if (!getsockopt( sockfd, SOL_SOCKET, SO_SNDBUF, &value, &len ))
1915 sock->sndbuf = value;
1916
1917 sock->state = (type == WS_SOCK_STREAM ? SOCK_UNCONNECTED : SOCK_CONNECTIONLESS);
1918 sock->proto = protocol;
1919 sock->type = type;
1920 sock->family = family;
1921
1922 if (is_tcp_socket( sock ))
1923 {
1924 int reuse = 1;
1925
1926 setsockopt( sockfd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse) );
1927 }
1928
1929 if (sock->fd)
1930 {
1931 options = get_fd_options( sock->fd );
1932 release_object( sock->fd );
1933 }
1934
1935 if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj, options )))
1936 {
1937 return -1;
1938 }
1939
1940 /* We can't immediately allow caching for a connection-mode socket, since it
1941 * might be accepted into (changing the underlying fd object.) */
1942 if (sock->type != WS_SOCK_STREAM) allow_fd_caching( sock->fd );
1943
1944 return 0;
1945 }
1946
1947 /* accepts a socket and inits it */
1948 static int accept_new_fd( struct sock *sock )
1949 {
1950
1951 /* Try to accept(2). We can't be safe that this an already connected socket
1952 * or that accept() is allowed on it. In those cases we will get -1/errno
1953 * return.
1954 */
1955 struct sockaddr saddr;
1956 socklen_t slen = sizeof(saddr);
1957 int acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen );
1958 if (acceptfd != -1)
1959 fcntl( acceptfd, F_SETFL, O_NONBLOCK );
1960 else
1961 set_error( sock_get_ntstatus( errno ));
1962 return acceptfd;
1963 }
1964
1965 /* accept a socket (creates a new fd) */
1966 static struct sock *accept_socket( struct sock *sock )
1967 {
1968 struct sock *acceptsock;
1969 int acceptfd;
1970
1971 if (get_unix_fd( sock->fd ) == -1) return NULL;
1972
1973 if ( sock->deferred )
1974 {
1975 acceptsock = sock->deferred;
1976 sock->deferred = NULL;
1977 }
1978 else
1979 {
1980 union unix_sockaddr unix_addr;
1981 socklen_t unix_len;
1982
1983 if ((acceptfd = accept_new_fd( sock )) == -1) return NULL;
1984 if (!(acceptsock = create_socket()))
1985 {
1986 close( acceptfd );
1987 return NULL;
1988 }
1989
1990 /* newly created socket gets the same properties of the listening socket */
1991 acceptsock->state = SOCK_CONNECTED;
1992 acceptsock->bound = 1;
1993 acceptsock->nonblocking = sock->nonblocking;
1994 acceptsock->mask = sock->mask;
1995 acceptsock->proto = sock->proto;
1996 acceptsock->type = sock->type;
1997 acceptsock->family = sock->family;
1998 acceptsock->window = sock->window;
1999 acceptsock->message = sock->message;
2000 acceptsock->connect_time = current_time;
2001 if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
2002 if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
2003 get_fd_options( sock->fd ) )))
2004 {
2005 release_object( acceptsock );
2006 return NULL;
2007 }
2008 unix_len = sizeof(unix_addr);
2009 if (!getsockname( acceptfd, &unix_addr.addr, &unix_len ))
2010 acceptsock->addr_len = sockaddr_from_unix( &unix_addr, &acceptsock->addr.addr, sizeof(acceptsock->addr) );
2011 }
2012 clear_error();
2013 sock->pending_events &= ~AFD_POLL_ACCEPT;
2014 sock->reported_events &= ~AFD_POLL_ACCEPT;
2015 sock_reselect( sock );
2016 return acceptsock;
2017 }
2018
2019 static int accept_into_socket( struct sock *sock, struct sock *acceptsock )
2020 {
2021 union unix_sockaddr unix_addr;
2022 socklen_t unix_len;
2023 int acceptfd;
2024 struct fd *newfd;
2025
2026 if (get_unix_fd( sock->fd ) == -1) return FALSE;
2027
2028 if ( sock->deferred )
2029 {
2030 newfd = dup_fd_object( sock->deferred->fd, 0, 0,
2031 get_fd_options( acceptsock->fd ) );
2032 if ( !newfd )
2033 return FALSE;
2034
2035 set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj );
2036
2037 release_object( sock->deferred );
2038 sock->deferred = NULL;
2039 }
2040 else
2041 {
2042 if ((acceptfd = accept_new_fd( sock )) == -1)
2043 return FALSE;
2044
2045 if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
2046 get_fd_options( acceptsock->fd ) )))
2047 return FALSE;
2048 }
2049
2050 acceptsock->state = SOCK_CONNECTED;
2051 acceptsock->bound = 1;
2052 acceptsock->pending_events = 0;
2053 acceptsock->reported_events = 0;
2054 acceptsock->proto = sock->proto;
2055 acceptsock->type = sock->type;
2056 acceptsock->family = sock->family;
2057 acceptsock->wparam = 0;
2058 acceptsock->deferred = NULL;
2059 acceptsock->connect_time = current_time;
2060 fd_copy_completion( acceptsock->fd, newfd );
2061 release_object( acceptsock->fd );
2062 acceptsock->fd = newfd;
2063
2064 unix_len = sizeof(unix_addr);
2065 if (!getsockname( get_unix_fd( newfd ), &unix_addr.addr, &unix_len ))
2066 acceptsock->addr_len = sockaddr_from_unix( &unix_addr, &acceptsock->addr.addr, sizeof(acceptsock->addr) );
2067
2068 clear_error();
2069 sock->pending_events &= ~AFD_POLL_ACCEPT;
2070 sock->reported_events &= ~AFD_POLL_ACCEPT;
2071 sock_reselect( sock );
2072
2073 return TRUE;
2074 }
2075
2076 #ifdef IP_BOUND_IF
2077
2078 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
2079 {
2080 static const int enable = 1;
2081 unsigned int index;
2082
2083 if (!(index = if_nametoindex( name )))
2084 return -1;
2085
2086 if (setsockopt( fd, IPPROTO_IP, IP_BOUND_IF, &index, sizeof(index) ))
2087 return -1;
2088
2089 return setsockopt( fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable) );
2090 }
2091
2092 #elif defined(IP_UNICAST_IF) && defined(SO_ATTACH_FILTER) && defined(SO_BINDTODEVICE)
2093
2094 struct interface_filter
2095 {
2096 struct sock_filter iface_memaddr;
2097 struct sock_filter iface_rule;
2098 struct sock_filter ip_memaddr;
2099 struct sock_filter ip_rule;
2100 struct sock_filter return_keep;
2101 struct sock_filter return_dump;
2102 };
2103 # define FILTER_JUMP_DUMP(here) (u_char)(offsetof(struct interface_filter, return_dump) \
2104 -offsetof(struct interface_filter, here)-sizeof(struct sock_filter)) \
2105 /sizeof(struct sock_filter)
2106 # define FILTER_JUMP_KEEP(here) (u_char)(offsetof(struct interface_filter, return_keep) \
2107 -offsetof(struct interface_filter, here)-sizeof(struct sock_filter)) \
2108 /sizeof(struct sock_filter)
2109 # define FILTER_JUMP_NEXT() (u_char)(0)
2110 # define SKF_NET_DESTIP 16 /* offset in the network header to the destination IP */
2111 static struct interface_filter generic_interface_filter =
2112 {
2113 /* This filter rule allows incoming packets on the specified interface, which works for all
2114 * remotely generated packets and for locally generated broadcast packets. */
2115 BPF_STMT(BPF_LD+BPF_W+BPF_ABS, SKF_AD_OFF+SKF_AD_IFINDEX),
2116 BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0xdeadbeef, FILTER_JUMP_KEEP(iface_rule), FILTER_JUMP_NEXT()),
2117 /* This rule allows locally generated packets targeted at the specific IP address of the chosen
2118 * adapter (local packets not destined for the broadcast address do not have IFINDEX set) */
2119 BPF_STMT(BPF_LD+BPF_W+BPF_ABS, SKF_NET_OFF+SKF_NET_DESTIP),
2120 BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0xdeadbeef, FILTER_JUMP_KEEP(ip_rule), FILTER_JUMP_DUMP(ip_rule)),
2121 BPF_STMT(BPF_RET+BPF_K, (u_int)-1), /* keep packet */
2122 BPF_STMT(BPF_RET+BPF_K, 0) /* dump packet */
2123 };
2124
2125 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
2126 {
2127 struct interface_filter specific_interface_filter;
2128 struct sock_fprog filter_prog;
2129 static const int enable = 1;
2130 unsigned int index;
2131 in_addr_t ifindex;
2132
2133 if (!setsockopt( fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen( name ) + 1 ))
2134 return 0;
2135
2136 /* SO_BINDTODEVICE requires NET_CAP_RAW until Linux 5.7. */
2137 if (debug_level)
2138 fprintf( stderr, "setsockopt SO_BINDTODEVICE fd %d, name %s failed: %s, falling back to SO_REUSE_ADDR\n",
2139 fd, name, strerror( errno ));
2140
2141 if (!(index = if_nametoindex( name )))
2142 return -1;
2143
2144 ifindex = htonl( index );
2145 if (setsockopt( fd, IPPROTO_IP, IP_UNICAST_IF, &ifindex, sizeof(ifindex) ) < 0)
2146 return -1;
2147
2148 specific_interface_filter = generic_interface_filter;
2149 specific_interface_filter.iface_rule.k = index;
2150 specific_interface_filter.ip_rule.k = htonl( bind_addr );
2151 filter_prog.len = sizeof(generic_interface_filter) / sizeof(struct sock_filter);
2152 filter_prog.filter = (struct sock_filter *)&specific_interface_filter;
2153 if (setsockopt( fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter_prog, sizeof(filter_prog) ))
2154 return -1;
2155
2156 return setsockopt( fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable) );
2157 }
2158
2159 #else
2160
2161 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
2162 {
2163 errno = EOPNOTSUPP;
2164 return -1;
2165 }
2166
2167 #endif /* LINUX_BOUND_IF */
2168
2169 /* Take bind() calls on any name corresponding to a local network adapter and
2170 * restrict the given socket to operating only on the specified interface. This
2171 * restriction consists of two components:
2172 * 1) An outgoing packet restriction suggesting the egress interface for all
2173 * packets.
2174 * 2) An incoming packet restriction dropping packets not meant for the
2175 * interface.
2176 * If the function succeeds in placing these restrictions, then the name for the
2177 * bind() may safely be changed to INADDR_ANY, permitting the transmission and
2178 * receipt of broadcast packets on the socket. This behavior is only relevant to
2179 * UDP sockets and is needed for applications that expect to be able to receive
2180 * broadcast packets on a socket that is bound to a specific network interface.
2181 */
2182 static int bind_to_interface( struct sock *sock, const struct sockaddr_in *addr )
2183 {
2184 in_addr_t bind_addr = addr->sin_addr.s_addr;
2185 struct ifaddrs *ifaddrs, *ifaddr;
2186 int fd = get_unix_fd( sock->fd );
2187 int err = 0;
2188
2189 if (bind_addr == htonl( INADDR_ANY ) || bind_addr == htonl( INADDR_LOOPBACK ))
2190 return 0;
2191 if (sock->type != WS_SOCK_DGRAM)
2192 return 0;
2193
2194 if (getifaddrs( &ifaddrs ) < 0) return 0;
2195
2196 for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next)
2197 {
2198 if (ifaddr->ifa_addr && ifaddr->ifa_addr->sa_family == AF_INET
2199 && ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr == bind_addr)
2200 {
2201 if ((err = bind_to_iface_name( fd, bind_addr, ifaddr->ifa_name )) < 0)
2202 {
2203 if (debug_level)
2204 fprintf( stderr, "failed to bind to interface: %s\n", strerror( errno ) );
2205 }
2206 break;
2207 }
2208 }
2209 freeifaddrs( ifaddrs );
2210 return !err;
2211 }
2212
2213 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
2214 static unsigned int get_ipv6_interface_index( const struct in6_addr *addr )
2215 {
2216 struct ifaddrs *ifaddrs, *ifaddr;
2217
2218 if (getifaddrs( &ifaddrs ) < 0) return 0;
2219
2220 for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next)
2221 {
2222 if (ifaddr->ifa_addr && ifaddr->ifa_addr->sa_family == AF_INET6
2223 && !memcmp( &((struct sockaddr_in6 *)ifaddr->ifa_addr)->sin6_addr, addr, sizeof(*addr) ))
2224 {
2225 unsigned int index = if_nametoindex( ifaddr->ifa_name );
2226
2227 if (!index)
2228 {
2229 if (debug_level)
2230 fprintf( stderr, "Unable to look up interface index for %s: %s\n",
2231 ifaddr->ifa_name, strerror( errno ) );
2232 continue;
2233 }
2234
2235 freeifaddrs( ifaddrs );
2236 return index;
2237 }
2238 }
2239
2240 freeifaddrs( ifaddrs );
2241 return 0;
2242 }
2243 #endif
2244
2245 /* return an errno value mapped to a WSA error */
2246 static unsigned int sock_get_error( int err )
2247 {
2248 switch (err)
2249 {
2250 case EINTR: return WSAEINTR;
2251 case EBADF: return WSAEBADF;
2252 case EPERM:
2253 case EACCES: return WSAEACCES;
2254 case EFAULT: return WSAEFAULT;
2255 case EINVAL: return WSAEINVAL;
2256 case EMFILE: return WSAEMFILE;
2257 case EINPROGRESS:
2258 case EWOULDBLOCK: return WSAEWOULDBLOCK;
2259 case EALREADY: return WSAEALREADY;
2260 case ENOTSOCK: return WSAENOTSOCK;
2261 case EDESTADDRREQ: return WSAEDESTADDRREQ;
2262 case EMSGSIZE: return WSAEMSGSIZE;
2263 case EPROTOTYPE: return WSAEPROTOTYPE;
2264 case ENOPROTOOPT: return WSAENOPROTOOPT;
2265 case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT;
2266 case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT;
2267 case EOPNOTSUPP: return WSAEOPNOTSUPP;
2268 case EPFNOSUPPORT: return WSAEPFNOSUPPORT;
2269 case EAFNOSUPPORT: return WSAEAFNOSUPPORT;
2270 case EADDRINUSE: return WSAEADDRINUSE;
2271 case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL;
2272 case ENETDOWN: return WSAENETDOWN;
2273 case ENETUNREACH: return WSAENETUNREACH;
2274 case ENETRESET: return WSAENETRESET;
2275 case ECONNABORTED: return WSAECONNABORTED;
2276 case EPIPE:
2277 case ECONNRESET: return WSAECONNRESET;
2278 case ENOBUFS: return WSAENOBUFS;
2279 case EISCONN: return WSAEISCONN;
2280 case ENOTCONN: return WSAENOTCONN;
2281 case ESHUTDOWN: return WSAESHUTDOWN;
2282 case ETOOMANYREFS: return WSAETOOMANYREFS;
2283 case ETIMEDOUT: return WSAETIMEDOUT;
2284 case ECONNREFUSED: return WSAECONNREFUSED;
2285 case ELOOP: return WSAELOOP;
2286 case ENAMETOOLONG: return WSAENAMETOOLONG;
2287 case EHOSTDOWN: return WSAEHOSTDOWN;
2288 case EHOSTUNREACH: return WSAEHOSTUNREACH;
2289 case ENOTEMPTY: return WSAENOTEMPTY;
2290 #ifdef EPROCLIM
2291 case EPROCLIM: return WSAEPROCLIM;
2292 #endif
2293 #ifdef EUSERS
2294 case EUSERS: return WSAEUSERS;
2295 #endif
2296 #ifdef EDQUOT
2297 case EDQUOT: return WSAEDQUOT;
2298 #endif
2299 #ifdef ESTALE
2300 case ESTALE: return WSAESTALE;
2301 #endif
2302 #ifdef EREMOTE
2303 case EREMOTE: return WSAEREMOTE;
2304 #endif
2305
2306 case 0: return 0;
2307 default:
2308 errno = err;
2309 perror("wineserver: sock_get_error() can't map error");
2310 return WSAEFAULT;
2311 }
2312 }
2313
2314 static int sock_get_ntstatus( int err )
2315 {
2316 switch ( err )
2317 {
2318 case EBADF: return STATUS_INVALID_HANDLE;
2319 case EBUSY: return STATUS_DEVICE_BUSY;
2320 case EPERM:
2321 case EACCES: return STATUS_ACCESS_DENIED;
2322 case EFAULT: return STATUS_ACCESS_VIOLATION;
2323 case EINVAL: return STATUS_INVALID_PARAMETER;
2324 case ENFILE:
2325 case EMFILE: return STATUS_TOO_MANY_OPENED_FILES;
2326 case EINPROGRESS:
2327 case EWOULDBLOCK: return STATUS_DEVICE_NOT_READY;
2328 case EALREADY: return STATUS_NETWORK_BUSY;
2329 case ENOTSOCK: return STATUS_OBJECT_TYPE_MISMATCH;
2330 case EDESTADDRREQ: return STATUS_INVALID_PARAMETER;
2331 case EMSGSIZE: return STATUS_BUFFER_OVERFLOW;
2332 case EPROTONOSUPPORT:
2333 case ESOCKTNOSUPPORT:
2334 case EPFNOSUPPORT:
2335 case EAFNOSUPPORT:
2336 case EPROTOTYPE: return STATUS_NOT_SUPPORTED;
2337 case ENOPROTOOPT: return STATUS_INVALID_PARAMETER;
2338 case EOPNOTSUPP: return STATUS_NOT_SUPPORTED;
2339 case EADDRINUSE: return STATUS_SHARING_VIOLATION;
2340 /* Linux returns ENODEV when specifying an invalid sin6_scope_id;
2341 * Windows returns STATUS_INVALID_ADDRESS_COMPONENT */
2342 case ENODEV:
2343 case EADDRNOTAVAIL: return STATUS_INVALID_ADDRESS_COMPONENT;
2344 case ECONNREFUSED: return STATUS_CONNECTION_REFUSED;
2345 case ESHUTDOWN: return STATUS_PIPE_DISCONNECTED;
2346 case ENOTCONN: return STATUS_INVALID_CONNECTION;
2347 case ETIMEDOUT: return STATUS_IO_TIMEOUT;
2348 case ENETUNREACH: return STATUS_NETWORK_UNREACHABLE;
2349 case EHOSTUNREACH: return STATUS_HOST_UNREACHABLE;
2350 case ENETDOWN: return STATUS_NETWORK_BUSY;
2351 case EPIPE:
2352 case ECONNRESET: return STATUS_CONNECTION_RESET;
2353 case ECONNABORTED: return STATUS_CONNECTION_ABORTED;
2354 case EISCONN: return STATUS_CONNECTION_ACTIVE;
2355
2356 case 0: return STATUS_SUCCESS;
2357 default:
2358 errno = err;
2359 perror("wineserver: sock_get_ntstatus() can't map error");
2360 return STATUS_UNSUCCESSFUL;
2361 }
2362 }
2363
2364 static struct accept_req *alloc_accept_req( struct sock *sock, struct sock *acceptsock, struct async *async,
2365 const struct afd_accept_into_params *params )
2366 {
2367 struct accept_req *req = mem_alloc( sizeof(*req) );
2368
2369 if (req)
2370 {
2371 req->async = (struct async *)grab_object( async );
2372 req->iosb = async_get_iosb( async );
2373 req->sock = (struct sock *)grab_object( sock );
2374 req->acceptsock = acceptsock;
2375 if (acceptsock) grab_object( acceptsock );
2376 req->accepted = 0;
2377 req->recv_len = 0;
2378 req->local_len = 0;
2379 if (params)
2380 {
2381 req->recv_len = params->recv_len;
2382 req->local_len = params->local_len;
2383 }
2384 }
2385 return req;
2386 }
2387
2388 static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
2389 {
2390 struct sock *sock = get_fd_user( fd );
2391 int unix_fd = -1;
2392
2393 assert( sock->obj.ops == &sock_ops );
2394
2395 if (code != IOCTL_AFD_WINE_CREATE && code != IOCTL_AFD_POLL && (unix_fd = get_unix_fd( fd )) < 0)
2396 return;
2397
2398 switch(code)
2399 {
2400 case IOCTL_AFD_WINE_CREATE:
2401 {
2402 const struct afd_create_params *params = get_req_data();
2403
2404 if (get_req_data_size() != sizeof(*params))
2405 {
2406 set_error( STATUS_INVALID_PARAMETER );
2407 return;
2408 }
2409 init_socket( sock, params->family, params->type, params->protocol );
2410 return;
2411 }
2412
2413 case IOCTL_AFD_WINE_ACCEPT:
2414 {
2415 struct sock *acceptsock;
2416 obj_handle_t handle;
2417
2418 if (get_reply_max_size() != sizeof(handle))
2419 {
2420 set_error( STATUS_BUFFER_TOO_SMALL );
2421 return;
2422 }
2423
2424 if (!(acceptsock = accept_socket( sock )))
2425 {
2426 struct accept_req *req;
2427
2428 if (sock->nonblocking) return;
2429 if (get_error() != STATUS_DEVICE_NOT_READY) return;
2430
2431 if (!(req = alloc_accept_req( sock, NULL, async, NULL ))) return;
2432 list_add_tail( &sock->accept_list, &req->entry );
2433
2434 async_set_completion_callback( async, free_accept_req, req );
2435 queue_async( &sock->accept_q, async );
2436 sock_reselect( sock );
2437 set_error( STATUS_PENDING );
2438 return;
2439 }
2440 handle = alloc_handle( current->process, &acceptsock->obj,
2441 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
2442 acceptsock->wparam = handle;
2443 sock_reselect( acceptsock );
2444 release_object( acceptsock );
2445 set_reply_data( &handle, sizeof(handle) );
2446 return;
2447 }
2448
2449 case IOCTL_AFD_WINE_ACCEPT_INTO:
2450 {
2451 static const int access = FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES | FILE_READ_DATA;
2452 const struct afd_accept_into_params *params = get_req_data();
2453 struct sock *acceptsock;
2454 unsigned int remote_len;
2455 struct accept_req *req;
2456
2457 if (get_req_data_size() != sizeof(*params) ||
2458 get_reply_max_size() < params->recv_len ||
2459 get_reply_max_size() - params->recv_len < params->local_len)
2460 {
2461 set_error( STATUS_BUFFER_TOO_SMALL );
2462 return;
2463 }
2464
2465 remote_len = get_reply_max_size() - params->recv_len - params->local_len;
2466 if (remote_len < sizeof(int))
2467 {
2468 set_error( STATUS_INVALID_PARAMETER );
2469 return;
2470 }
2471
2472 if (!(acceptsock = (struct sock *)get_handle_obj( current->process, params->accept_handle, access, &sock_ops )))
2473 return;
2474
2475 if (acceptsock->accept_recv_req)
2476 {
2477 release_object( acceptsock );
2478 set_error( STATUS_INVALID_PARAMETER );
2479 return;
2480 }
2481
2482 if (!(req = alloc_accept_req( sock, acceptsock, async, params )))
2483 {
2484 release_object( acceptsock );
2485 return;
2486 }
2487 list_add_tail( &sock->accept_list, &req->entry );
2488 acceptsock->accept_recv_req = req;
2489 release_object( acceptsock );
2490
2491 acceptsock->wparam = params->accept_handle;
2492 async_set_completion_callback( async, free_accept_req, req );
2493 queue_async( &sock->accept_q, async );
2494 sock_reselect( sock );
2495 set_error( STATUS_PENDING );
2496 return;
2497 }
2498
2499 case IOCTL_AFD_LISTEN:
2500 {
2501 const struct afd_listen_params *params = get_req_data();
2502
2503 if (get_req_data_size() < sizeof(*params))
2504 {
2505 set_error( STATUS_INVALID_PARAMETER );
2506 return;
2507 }
2508
2509 if (!sock->bound)
2510 {
2511 set_error( STATUS_INVALID_PARAMETER );
2512 return;
2513 }
2514
2515 if (listen( unix_fd, params->backlog ) < 0)
2516 {
2517 set_error( sock_get_ntstatus( errno ) );
2518 return;
2519 }
2520
2521 sock->state = SOCK_LISTENING;
2522
2523 /* a listening socket can no longer be accepted into */
2524 allow_fd_caching( sock->fd );
2525
2526 /* we may already be selecting for AFD_POLL_ACCEPT */
2527 sock_reselect( sock );
2528 return;
2529 }
2530
2531 case IOCTL_AFD_WINE_CONNECT:
2532 {
2533 const struct afd_connect_params *params = get_req_data();
2534 const struct WS_sockaddr *addr;
2535 union unix_sockaddr unix_addr;
2536 struct connect_req *req;
2537 socklen_t unix_len;
2538 int send_len, ret;
2539
2540 if (get_req_data_size() < sizeof(*params) ||
2541 get_req_data_size() - sizeof(*params) < params->addr_len)
2542 {
2543 set_error( STATUS_BUFFER_TOO_SMALL );
2544 return;
2545 }
2546 send_len = get_req_data_size() - sizeof(*params) - params->addr_len;
2547 addr = (const struct WS_sockaddr *)(params + 1);
2548
2549 if (!params->synchronous && !sock->bound)
2550 {
2551 set_error( STATUS_INVALID_PARAMETER );
2552 return;
2553 }
2554
2555 if (sock->accept_recv_req)
2556 {
2557 set_error( STATUS_INVALID_PARAMETER );
2558 return;
2559 }
2560
2561 if (sock->connect_req)
2562 {
2563 set_error( STATUS_INVALID_PARAMETER );
2564 return;
2565 }
2566
2567 switch (sock->state)
2568 {
2569 case SOCK_LISTENING:
2570 set_error( STATUS_INVALID_PARAMETER );
2571 return;
2572
2573 case SOCK_CONNECTING:
2574 /* FIXME: STATUS_ADDRESS_ALREADY_ASSOCIATED probably isn't right,
2575 * but there's no status code that maps to WSAEALREADY... */
2576 set_error( params->synchronous ? STATUS_ADDRESS_ALREADY_ASSOCIATED : STATUS_INVALID_PARAMETER );
2577 return;
2578
2579 case SOCK_CONNECTED:
2580 set_error( STATUS_CONNECTION_ACTIVE );
2581 return;
2582
2583 case SOCK_UNCONNECTED:
2584 case SOCK_CONNECTIONLESS:
2585 break;
2586 }
2587
2588 unix_len = sockaddr_to_unix( addr, params->addr_len, &unix_addr );
2589 if (!unix_len)
2590 {
2591 set_error( STATUS_INVALID_ADDRESS );
2592 return;
2593 }
2594 if (unix_addr.addr.sa_family == AF_INET && !memcmp( &unix_addr.in.sin_addr, magic_loopback_addr, 4 ))
2595 unix_addr.in.sin_addr.s_addr = htonl( INADDR_LOOPBACK );
2596
2597 ret = connect( unix_fd, &unix_addr.addr, unix_len );
2598 if (ret < 0 && errno != EINPROGRESS)
2599 {
2600 set_error( sock_get_ntstatus( errno ) );
2601 return;
2602 }
2603
2604 /* a connected or connecting socket can no longer be accepted into */
2605 allow_fd_caching( sock->fd );
2606
2607 unix_len = sizeof(unix_addr);
2608 if (!getsockname( unix_fd, &unix_addr.addr, &unix_len ))
2609 sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) );
2610 sock->bound = 1;
2611
2612 if (!ret)
2613 {
2614 if (sock->type != WS_SOCK_DGRAM)
2615 {
2616 sock->state = SOCK_CONNECTED;
2617 sock->connect_time = current_time;
2618 }
2619
2620 if (!send_len) return;
2621 }
2622
2623 if (sock->type != WS_SOCK_DGRAM)
2624 sock->state = SOCK_CONNECTING;
2625
2626 if (params->synchronous && sock->nonblocking)
2627 {
2628 sock_reselect( sock );
2629 set_error( STATUS_DEVICE_NOT_READY );
2630 return;
2631 }
2632
2633 if (!(req = mem_alloc( sizeof(*req) )))
2634 return;
2635
2636 req->async = (struct async *)grab_object( async );
2637 req->iosb = async_get_iosb( async );
2638 req->sock = (struct sock *)grab_object( sock );
2639 req->addr_len = params->addr_len;
2640 req->send_len = send_len;
2641 req->send_cursor = 0;
2642
2643 async_set_completion_callback( async, free_connect_req, req );
2644 sock->connect_req = req;
2645 queue_async( &sock->connect_q, async );
2646 sock_reselect( sock );
2647 set_error( STATUS_PENDING );
2648 return;
2649 }
2650
2651 case IOCTL_AFD_WINE_SHUTDOWN:
2652 {
2653 unsigned int how;
2654
2655 if (get_req_data_size() < sizeof(int))
2656 {
2657 set_error( STATUS_BUFFER_TOO_SMALL );
2658 return;
2659 }
2660 how = *(int *)get_req_data();
2661
2662 if (how > SD_BOTH)
2663 {
2664 set_error( STATUS_INVALID_PARAMETER );
2665 return;
2666 }
2667
2668 if (sock->state != SOCK_CONNECTED && sock->state != SOCK_CONNECTIONLESS)
2669 {
2670 set_error( STATUS_INVALID_CONNECTION );
2671 return;
2672 }
2673
2674 if (how != SD_SEND)
2675 {
2676 sock->rd_shutdown = 1;
2677 }
2678 if (how != SD_RECEIVE)
2679 {
2680 sock->wr_shutdown = 1;
2681 if (list_empty( &sock->write_q.queue ))
2682 shutdown( unix_fd, SHUT_WR );
2683 else
2684 sock->wr_shutdown_pending = 1;
2685 }
2686
2687 if (how == SD_BOTH)
2688 {
2689 if (sock->event) release_object( sock->event );
2690 sock->event = NULL;
2691 sock->window = 0;
2692 sock->mask = 0;
2693 sock->nonblocking = 1;
2694 }
2695
2696 sock_reselect( sock );
2697 return;
2698 }
2699
2700 case IOCTL_AFD_WINE_ADDRESS_LIST_CHANGE:
2701 {
2702 int force_async;
2703
2704 if (get_req_data_size() < sizeof(int))
2705 {
2706 set_error( STATUS_BUFFER_TOO_SMALL );
2707 return;
2708 }
2709 force_async = *(int *)get_req_data();
2710
2711 if (sock->nonblocking && !force_async)
2712 {
2713 set_error( STATUS_DEVICE_NOT_READY );
2714 return;
2715 }
2716 if (!sock_get_ifchange( sock )) return;
2717 queue_async( &sock->ifchange_q, async );
2718 set_error( STATUS_PENDING );
2719 return;
2720 }
2721
2722 case IOCTL_AFD_WINE_FIONBIO:
2723 if (get_req_data_size() < sizeof(int))
2724 {
2725 set_error( STATUS_BUFFER_TOO_SMALL );
2726 return;
2727 }
2728 if (*(int *)get_req_data())
2729 {
2730 sock->nonblocking = 1;
2731 }
2732 else
2733 {
2734 if (sock->mask)
2735 {
2736 set_error( STATUS_INVALID_PARAMETER );
2737 return;
2738 }
2739 sock->nonblocking = 0;
2740 }
2741 return;
2742
2743 case IOCTL_AFD_GET_EVENTS:
2744 {
2745 struct afd_get_events_params params = {0};
2746 unsigned int i;
2747
2748 if (get_reply_max_size() < sizeof(params))
2749 {
2750 set_error( STATUS_INVALID_PARAMETER );
2751 return;
2752 }
2753
2754 params.flags = sock->pending_events & sock->mask;
2755 for (i = 0; i < ARRAY_SIZE( params.status ); ++i)
2756 params.status[i] = sock_get_ntstatus( sock->errors[i] );
2757
2758 sock->pending_events &= ~sock->mask;
2759 sock_reselect( sock );
2760
2761 set_reply_data( &params, sizeof(params) );
2762 return;
2763 }
2764
2765 case IOCTL_AFD_EVENT_SELECT:
2766 {
2767 struct event *event = NULL;
2768 obj_handle_t event_handle;
2769 int mask;
2770
2771 set_async_pending( async );
2772
2773 if (is_machine_64bit( current->process->machine ))
2774 {
2775 const struct afd_event_select_params_64 *params = get_req_data();
2776
2777 if (get_req_data_size() < sizeof(*params))
2778 {
2779 set_error( STATUS_INVALID_PARAMETER );
2780 return;
2781 }
2782
2783 event_handle = params->event;
2784 mask = params->mask;
2785 }
2786 else
2787 {
2788 const struct afd_event_select_params_32 *params = get_req_data();
2789
2790 if (get_req_data_size() < sizeof(*params))
2791 {
2792 set_error( STATUS_INVALID_PARAMETER );
2793 return;
2794 }
2795
2796 event_handle = params->event;
2797 mask = params->mask;
2798 }
2799
2800 if ((event_handle || mask) &&
2801 !(event = get_event_obj( current->process, event_handle, EVENT_MODIFY_STATE )))
2802 {
2803 set_error( STATUS_INVALID_PARAMETER );
2804 return;
2805 }
2806
2807 if (sock->event) release_object( sock->event );
2808 sock->event = event;
2809 sock->mask = mask;
2810 sock->window = 0;
2811 sock->message = 0;
2812 sock->wparam = 0;
2813 sock->nonblocking = 1;
2814
2815 sock_reselect( sock );
2816 /* Explicitly wake the socket up if the mask causes it to become
2817 * signaled. Note that reselecting isn't enough, since we might already
2818 * have had events recorded in sock->reported_events and we don't want
2819 * to select for them again. */
2820 sock_wake_up( sock );
2821
2822 return;
2823 }
2824
2825 case IOCTL_AFD_WINE_MESSAGE_SELECT:
2826 {
2827 const struct afd_message_select_params *params = get_req_data();
2828
2829 if (get_req_data_size() < sizeof(params))
2830 {
2831 set_error( STATUS_BUFFER_TOO_SMALL );
2832 return;
2833 }
2834
2835 if (sock->event) release_object( sock->event );
2836
2837 if (params->window)
2838 {
2839 sock->pending_events = 0;
2840 sock->reported_events = 0;
2841 }
2842 sock->event = NULL;
2843 sock->mask = params->mask;
2844 sock->window = params->window;
2845 sock->message = params->message;
2846 sock->wparam = params->handle;
2847 sock->nonblocking = 1;
2848
2849 sock_reselect( sock );
2850
2851 return;
2852 }
2853
2854 case IOCTL_AFD_BIND:
2855 {
2856 const struct afd_bind_params *params = get_req_data();
2857 union unix_sockaddr unix_addr, bind_addr;
2858 data_size_t in_size;
2859 socklen_t unix_len;
2860 int v6only = 1;
2861
2862 /* the ioctl is METHOD_NEITHER, so ntdll gives us the output buffer as
2863 * input */
2864 if (get_req_data_size() < get_reply_max_size())
2865 {
2866 set_error( STATUS_BUFFER_TOO_SMALL );
2867 return;
2868 }
2869 in_size = get_req_data_size() - get_reply_max_size();
2870 if (in_size < offsetof(struct afd_bind_params, addr.sa_data)
2871 || get_reply_max_size() < in_size - sizeof(int))
2872 {
2873 set_error( STATUS_INVALID_PARAMETER );
2874 return;
2875 }
2876
2877 if (sock->bound)
2878 {
2879 set_error( STATUS_ADDRESS_ALREADY_ASSOCIATED );
2880 return;
2881 }
2882
2883 unix_len = sockaddr_to_unix( &params->addr, in_size - sizeof(int), &unix_addr );
2884 if (!unix_len)
2885 {
2886 set_error( STATUS_INVALID_ADDRESS );
2887 return;
2888 }
2889 bind_addr = unix_addr;
2890
2891 if (unix_addr.addr.sa_family == AF_INET)
2892 {
2893 if (!memcmp( &unix_addr.in.sin_addr, magic_loopback_addr, 4 )
2894 || bind_to_interface( sock, &unix_addr.in ))
2895 bind_addr.in.sin_addr.s_addr = htonl( INADDR_ANY );
2896 }
2897 else if (unix_addr.addr.sa_family == AF_INET6)
2898 {
2899 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
2900 /* Windows allows specifying zero to use the default scope. Linux
2901 * interprets it as an interface index and requires that it be
2902 * nonzero. */
2903 if (!unix_addr.in6.sin6_scope_id)
2904 bind_addr.in6.sin6_scope_id = get_ipv6_interface_index( &unix_addr.in6.sin6_addr );
2905 #endif
2906 }
2907
2908 set_async_pending( async );
2909
2910 #ifdef IPV6_V6ONLY
2911 if (sock->family == WS_AF_INET6)
2912 {
2913 socklen_t len = sizeof(v6only);
2914
2915 getsockopt( get_unix_fd(sock->fd), IPPROTO_IPV6, IPV6_V6ONLY, &v6only, &len );
2916 }
2917 #endif
2918
2919 if (check_addr_usage( sock, &bind_addr, v6only ))
2920 return;
2921
2922 if (bind( unix_fd, &bind_addr.addr, unix_len ) < 0)
2923 {
2924 if (errno == EADDRINUSE && sock->reuseaddr)
2925 errno = EACCES;
2926
2927 set_error( sock_get_ntstatus( errno ) );
2928 return;
2929 }
2930
2931 sock->bound = 1;
2932
2933 unix_len = sizeof(bind_addr);
2934 if (!getsockname( unix_fd, &bind_addr.addr, &unix_len ))
2935 {
2936 /* store the interface or magic loopback address instead of the
2937 * actual unix address */
2938 if (bind_addr.addr.sa_family == AF_INET)
2939 bind_addr.in.sin_addr = unix_addr.in.sin_addr;
2940 sock->addr_len = sockaddr_from_unix( &bind_addr, &sock->addr.addr, sizeof(sock->addr) );
2941 }
2942
2943 update_addr_usage( sock, &bind_addr, v6only );
2944
2945 if (get_reply_max_size() >= sock->addr_len)
2946 set_reply_data( &sock->addr, sock->addr_len );
2947 return;
2948 }
2949
2950 case IOCTL_AFD_GETSOCKNAME:
2951 if (!sock->bound)
2952 {
2953 set_error( STATUS_INVALID_PARAMETER );
2954 return;
2955 }
2956
2957 if (get_reply_max_size() < sock->addr_len)
2958 {
2959 set_error( STATUS_BUFFER_TOO_SMALL );
2960 return;
2961 }
2962
2963 set_reply_data( &sock->addr, sock->addr_len );
2964 return;
2965
2966 case IOCTL_AFD_WINE_DEFER:
2967 {
2968 const obj_handle_t *handle = get_req_data();
2969 struct sock *acceptsock;
2970
2971 if (get_req_data_size() < sizeof(*handle))
2972 {
2973 set_error( STATUS_BUFFER_TOO_SMALL );
2974 return;
2975 }
2976
2977 acceptsock = (struct sock *)get_handle_obj( current->process, *handle, 0, &sock_ops );
2978 if (!acceptsock) return;
2979
2980 sock->deferred = acceptsock;
2981 return;
2982 }
2983
2984 case IOCTL_AFD_WINE_GET_INFO:
2985 {
2986 struct afd_get_info_params params;
2987
2988 if (get_reply_max_size() < sizeof(params))
2989 {
2990 set_error( STATUS_BUFFER_TOO_SMALL );
2991 return;
2992 }
2993
2994 params.family = sock->family;
2995 params.type = sock->type;
2996 params.protocol = sock->proto;
2997 set_reply_data( &params, sizeof(params) );
2998 return;
2999 }
3000
3001 case IOCTL_AFD_WINE_GET_SO_ACCEPTCONN:
3002 {
3003 int listening = (sock->state == SOCK_LISTENING);
3004
3005 if (get_reply_max_size() < sizeof(listening))
3006 {
3007 set_error( STATUS_BUFFER_TOO_SMALL );
3008 return;
3009 }
3010
3011 set_reply_data( &listening, sizeof(listening) );
3012 return;
3013 }
3014
3015 case IOCTL_AFD_WINE_GET_SO_ERROR:
3016 {
3017 int error;
3018 unsigned int i;
3019
3020 if (get_reply_max_size() < sizeof(error))
3021 {
3022 set_error( STATUS_BUFFER_TOO_SMALL );
3023 return;
3024 }
3025
3026 error = sock_error( sock );
3027 if (!error)
3028 {
3029 for (i = 0; i < ARRAY_SIZE( sock->errors ); ++i)
3030 {
3031 if (sock->errors[i])
3032 {
3033 error = sock->errors[i];
3034 break;
3035 }
3036 }
3037 }
3038
3039 error = sock_get_error( error );
3040 set_reply_data( &error, sizeof(error) );
3041 return;
3042 }
3043
3044 case IOCTL_AFD_WINE_GET_SO_RCVBUF:
3045 {
3046 int rcvbuf = sock->rcvbuf;
3047
3048 if (get_reply_max_size() < sizeof(rcvbuf))
3049 {
3050 set_error( STATUS_BUFFER_TOO_SMALL );
3051 return;
3052 }
3053
3054 set_reply_data( &rcvbuf, sizeof(rcvbuf) );
3055 return;
3056 }
3057
3058 case IOCTL_AFD_WINE_SET_SO_RCVBUF:
3059 {
3060 DWORD rcvbuf;
3061
3062 if (get_req_data_size() < sizeof(rcvbuf))
3063 {
3064 set_error( STATUS_BUFFER_TOO_SMALL );
3065 return;
3066 }
3067 rcvbuf = *(DWORD *)get_req_data();
3068
3069 if (!setsockopt( unix_fd, SOL_SOCKET, SO_RCVBUF, (char *)&rcvbuf, sizeof(rcvbuf) ))
3070 sock->rcvbuf = rcvbuf;
3071 else
3072 set_error( sock_get_ntstatus( errno ) );
3073 return;
3074 }
3075
3076 case IOCTL_AFD_WINE_GET_SO_RCVTIMEO:
3077 {
3078 DWORD rcvtimeo = sock->rcvtimeo;
3079
3080 if (get_reply_max_size() < sizeof(rcvtimeo))
3081 {
3082 set_error( STATUS_BUFFER_TOO_SMALL );
3083 return;
3084 }
3085
3086 set_reply_data( &rcvtimeo, sizeof(rcvtimeo) );
3087 return;
3088 }
3089
3090 case IOCTL_AFD_WINE_SET_SO_RCVTIMEO:
3091 {
3092 DWORD rcvtimeo;
3093
3094 if (get_req_data_size() < sizeof(rcvtimeo))
3095 {
3096 set_error( STATUS_BUFFER_TOO_SMALL );
3097 return;
3098 }
3099 rcvtimeo = *(DWORD *)get_req_data();
3100
3101 sock->rcvtimeo = rcvtimeo;
3102 return;
3103 }
3104
3105 /* BSD socket SO_REUSEADDR is not compatible with winsock semantics. */
3106 case IOCTL_AFD_WINE_SET_SO_REUSEADDR:
3107 {
3108 int reuse, ret;
3109
3110 if (get_req_data_size() < sizeof(reuse))
3111 {
3112 set_error( STATUS_BUFFER_TOO_SMALL );
3113 return;
3114 }
3115
3116 reuse = *(int *)get_req_data();
3117
3118 if (reuse && sock->exclusiveaddruse)
3119 {
3120 set_error( STATUS_INVALID_PARAMETER );
3121 return;
3122 }
3123
3124 if (is_tcp_socket( sock ))
3125 ret = 0;
3126 else
3127 ret = setsockopt( unix_fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse) );
3128 #ifdef __APPLE__
3129 if (!ret) ret = setsockopt( unix_fd, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(reuse) );
3130 #endif
3131 if (ret)
3132 set_error( sock_get_ntstatus( errno ) );
3133 else
3134 sock->reuseaddr = !!reuse;
3135 return;
3136 }
3137
3138 case IOCTL_AFD_WINE_SET_SO_EXCLUSIVEADDRUSE:
3139 {
3140 int exclusive;
3141
3142 if (get_req_data_size() < sizeof(exclusive))
3143 {
3144 set_error( STATUS_BUFFER_TOO_SMALL );
3145 return;
3146 }
3147
3148 exclusive = *(int *)get_req_data();
3149 if (exclusive && sock->reuseaddr)
3150 {
3151 set_error( STATUS_INVALID_PARAMETER );
3152 return;
3153 }
3154 sock->exclusiveaddruse = !!exclusive;
3155 return;
3156 }
3157
3158 case IOCTL_AFD_WINE_GET_SO_SNDBUF:
3159 {
3160 int sndbuf = sock->sndbuf;
3161
3162 if (get_reply_max_size() < sizeof(sndbuf))
3163 {
3164 set_error( STATUS_BUFFER_TOO_SMALL );
3165 return;
3166 }
3167
3168 set_reply_data( &sndbuf, sizeof(sndbuf) );
3169 return;
3170 }
3171
3172 case IOCTL_AFD_WINE_SET_SO_SNDBUF:
3173 {
3174 DWORD sndbuf;
3175
3176 if (get_req_data_size() < sizeof(sndbuf))
3177 {
3178 set_error( STATUS_BUFFER_TOO_SMALL );
3179 return;
3180 }
3181 sndbuf = *(DWORD *)get_req_data();
3182
3183 #ifdef __APPLE__
3184 if (!sndbuf)
3185 {
3186 /* setsockopt fails if a zero value is passed */
3187 sock->sndbuf = sndbuf;
3188 return;
3189 }
3190 #endif
3191
3192 if (!setsockopt( unix_fd, SOL_SOCKET, SO_SNDBUF, (char *)&sndbuf, sizeof(sndbuf) ))
3193 sock->sndbuf = sndbuf;
3194 else
3195 set_error( sock_get_ntstatus( errno ) );
3196 return;
3197 }
3198
3199 case IOCTL_AFD_WINE_GET_SO_SNDTIMEO:
3200 {
3201 DWORD sndtimeo = sock->sndtimeo;
3202
3203 if (get_reply_max_size() < sizeof(sndtimeo))
3204 {
3205 set_error( STATUS_BUFFER_TOO_SMALL );
3206 return;
3207 }
3208
3209 set_reply_data( &sndtimeo, sizeof(sndtimeo) );
3210 return;
3211 }
3212
3213 case IOCTL_AFD_WINE_SET_SO_SNDTIMEO:
3214 {
3215 DWORD sndtimeo;
3216
3217 if (get_req_data_size() < sizeof(sndtimeo))
3218 {
3219 set_error( STATUS_BUFFER_TOO_SMALL );
3220 return;
3221 }
3222 sndtimeo = *(DWORD *)get_req_data();
3223
3224 sock->sndtimeo = sndtimeo;
3225 return;
3226 }
3227
3228 case IOCTL_AFD_WINE_GET_SO_CONNECT_TIME:
3229 {
3230 DWORD time = ~0u;
3231
3232 if (get_reply_max_size() < sizeof(time))
3233 {
3234 set_error( STATUS_BUFFER_TOO_SMALL );
3235 return;
3236 }
3237
3238 if (sock->state == SOCK_CONNECTED)
3239 time = (current_time - sock->connect_time) / 10000000;
3240
3241 set_reply_data( &time, sizeof(time) );
3242 return;
3243 }
3244
3245 case IOCTL_AFD_WINE_GET_SO_REUSEADDR:
3246 {
3247 int reuse;
3248
3249 if (!get_reply_max_size())
3250 {
3251 set_error( STATUS_BUFFER_TOO_SMALL );
3252 return;
3253 }
3254
3255 reuse = sock->reuseaddr;
3256 set_reply_data( &reuse, min( sizeof(reuse), get_reply_max_size() ));
3257 return;
3258 }
3259
3260 case IOCTL_AFD_WINE_GET_SO_EXCLUSIVEADDRUSE:
3261 {
3262 int exclusive;
3263
3264 if (!get_reply_max_size())
3265 {
3266 set_error( STATUS_BUFFER_TOO_SMALL );
3267 return;
3268 }
3269
3270 exclusive = sock->exclusiveaddruse;
3271 set_reply_data( &exclusive, min( sizeof(exclusive), get_reply_max_size() ));
3272 return;
3273 }
3274
3275 case IOCTL_AFD_POLL:
3276 {
3277 if (get_reply_max_size() < get_req_data_size())
3278 {
3279 set_error( STATUS_INVALID_PARAMETER );
3280 return;
3281 }
3282
3283 if (is_machine_64bit( current->process->machine ))
3284 {
3285 const struct afd_poll_params_64 *params = get_req_data();
3286
3287 if (get_req_data_size() < sizeof(struct afd_poll_params_64) ||
3288 get_req_data_size() < offsetof( struct afd_poll_params_64, sockets[params->count] ))
3289 {
3290 set_error( STATUS_INVALID_PARAMETER );
3291 return;
3292 }
3293
3294 poll_socket( sock, async, params->exclusive, params->timeout, params->count, params->sockets );
3295 }
3296 else
3297 {
3298 const struct afd_poll_params_32 *params = get_req_data();
3299 struct afd_poll_socket_64 *sockets;
3300 unsigned int i;
3301
3302 if (get_req_data_size() < sizeof(struct afd_poll_params_32) ||
3303 get_req_data_size() < offsetof( struct afd_poll_params_32, sockets[params->count] ))
3304 {
3305 set_error( STATUS_INVALID_PARAMETER );
3306 return;
3307 }
3308
3309 if (!(sockets = mem_alloc( params->count * sizeof(*sockets) ))) return;
3310 for (i = 0; i < params->count; ++i)
3311 {
3312 sockets[i].socket = params->sockets[i].socket;
3313 sockets[i].flags = params->sockets[i].flags;
3314 sockets[i].status = params->sockets[i].status;
3315 }
3316
3317 poll_socket( sock, async, params->exclusive, params->timeout, params->count, sockets );
3318 free( sockets );
3319 }
3320
3321 return;
3322 }
3323
3324 default:
3325 set_error( STATUS_NOT_SUPPORTED );
3326 return;
3327 }
3328 }
3329
3330 static void handle_exclusive_poll(struct poll_req *req)
3331 {
3332 unsigned int i;
3333
3334 for (i = 0; i < req->count; ++i)
3335 {
3336 struct sock *sock = req->sockets[i].sock;
3337 struct poll_req *main_poll = sock->main_poll;
3338
3339 if (main_poll && main_poll->exclusive && req->exclusive)
3340 {
3341 complete_async_poll( main_poll, STATUS_SUCCESS );
3342 main_poll = NULL;
3343 }
3344
3345 if (!main_poll)
3346 sock->main_poll = req;
3347 }
3348 }
3349
3350 static void poll_socket( struct sock *poll_sock, struct async *async, int exclusive, timeout_t timeout,
3351 unsigned int count, const struct afd_poll_socket_64 *sockets )
3352 {
3353 BOOL signaled = FALSE;
3354 struct poll_req *req;
3355 unsigned int i, j;
3356
3357 if (!count)
3358 {
3359 set_error( STATUS_INVALID_PARAMETER );
3360 return;
3361 }
3362
3363 if (!(req = mem_alloc( offsetof( struct poll_req, sockets[count] ) )))
3364 return;
3365
3366 req->timeout = NULL;
3367 req->pending = 0;
3368 if (timeout && timeout != TIMEOUT_INFINITE &&
3369 !(req->timeout = add_timeout_user( timeout, async_poll_timeout, req )))
3370 {
3371 free( req );
3372 return;
3373 }
3374 req->orig_timeout = timeout;
3375
3376 for (i = 0; i < count; ++i)
3377 {
3378 req->sockets[i].sock = (struct sock *)get_handle_obj( current->process, sockets[i].socket, 0, &sock_ops );
3379 if (!req->sockets[i].sock)
3380 {
3381 for (j = 0; j < i; ++j) release_object( req->sockets[j].sock );
3382 if (req->timeout) remove_timeout_user( req->timeout );
3383 free( req );
3384 return;
3385 }
3386 req->sockets[i].handle = sockets[i].socket;
3387 req->sockets[i].mask = sockets[i].flags;
3388 req->sockets[i].flags = 0;
3389 }
3390
3391 req->exclusive = exclusive;
3392 req->count = count;
3393 req->async = (struct async *)grab_object( async );
3394 req->iosb = async_get_iosb( async );
3395
3396 handle_exclusive_poll(req);
3397
3398 list_add_tail( &poll_list, &req->entry );
3399 async_set_completion_callback( async, free_poll_req, req );
3400 queue_async( &poll_sock->poll_q, async );
3401
3402 for (i = 0; i < count; ++i)
3403 {
3404 struct sock *sock = req->sockets[i].sock;
3405 int mask = req->sockets[i].mask;
3406 struct pollfd pollfd;
3407
3408 pollfd.fd = get_unix_fd( sock->fd );
3409 pollfd.events = poll_flags_from_afd( sock, mask );
3410 if (pollfd.events >= 0 && poll( &pollfd, 1, 0 ) >= 0)
3411 sock_poll_event( sock->fd, pollfd.revents );
3412
3413 /* FIXME: do other error conditions deserve a similar treatment? */
3414 if (sock->state != SOCK_CONNECTING && sock->errors[AFD_POLL_BIT_CONNECT_ERR] && (mask & AFD_POLL_CONNECT_ERR))
3415 {
3416 req->sockets[i].flags |= AFD_POLL_CONNECT_ERR;
3417 req->sockets[i].status = sock_get_ntstatus( sock->errors[AFD_POLL_BIT_CONNECT_ERR] );
3418 }
3419
3420 if (req->sockets[i].flags)
3421 signaled = TRUE;
3422 }
3423
3424 if (!timeout || signaled)
3425 complete_async_poll( req, STATUS_SUCCESS );
3426 else
3427 req->pending = 1;
3428
3429 for (i = 0; i < req->count; ++i)
3430 sock_reselect( req->sockets[i].sock );
3431 set_error( STATUS_PENDING );
3432 }
3433
3434 #ifdef HAVE_LINUX_RTNETLINK_H
3435
3436 /* only keep one ifchange object around, all sockets waiting for wakeups will look to it */
3437 static struct object *ifchange_object;
3438
3439 static void ifchange_dump( struct object *obj, int verbose );
3440 static struct fd *ifchange_get_fd( struct object *obj );
3441 static void ifchange_destroy( struct object *obj );
3442
3443 static int ifchange_get_poll_events( struct fd *fd );
3444 static void ifchange_poll_event( struct fd *fd, int event );
3445
3446 struct ifchange
3447 {
3448 struct object obj; /* object header */
3449 struct fd *fd; /* interface change file descriptor */
3450 struct list sockets; /* list of sockets to send interface change notifications */
3451 };
3452
3453 static const struct object_ops ifchange_ops =
3454 {
3455 sizeof(struct ifchange), /* size */
3456 &no_type, /* type */
3457 ifchange_dump, /* dump */
3458 no_add_queue, /* add_queue */
3459 NULL, /* remove_queue */
3460 NULL, /* signaled */
3461 no_satisfied, /* satisfied */
3462 no_signal, /* signal */
3463 ifchange_get_fd, /* get_fd */
3464 default_map_access, /* map_access */
3465 default_get_sd, /* get_sd */
3466 default_set_sd, /* set_sd */
3467 no_get_full_name, /* get_full_name */
3468 no_lookup_name, /* lookup_name */
3469 no_link_name, /* link_name */
3470 NULL, /* unlink_name */
3471 no_open_file, /* open_file */
3472 no_kernel_obj_list, /* get_kernel_obj_list */
3473 no_close_handle, /* close_handle */
3474 ifchange_destroy /* destroy */
3475 };
3476
3477 static const struct fd_ops ifchange_fd_ops =
3478 {
3479 ifchange_get_poll_events, /* get_poll_events */
3480 ifchange_poll_event, /* poll_event */
3481 NULL, /* get_fd_type */
3482 no_fd_read, /* read */
3483 no_fd_write, /* write */
3484 no_fd_flush, /* flush */
3485 no_fd_get_file_info, /* get_file_info */
3486 no_fd_get_volume_info, /* get_volume_info */
3487 no_fd_ioctl, /* ioctl */
3488 NULL, /* cancel_async */
3489 NULL, /* queue_async */
3490 NULL /* reselect_async */
3491 };
3492
3493 static void ifchange_dump( struct object *obj, int verbose )
3494 {
3495 assert( obj->ops == &ifchange_ops );
3496 fprintf( stderr, "Interface change\n" );
3497 }
3498
3499 static struct fd *ifchange_get_fd( struct object *obj )
3500 {
3501 struct ifchange *ifchange = (struct ifchange *)obj;
3502 return (struct fd *)grab_object( ifchange->fd );
3503 }
3504
3505 static void ifchange_destroy( struct object *obj )
3506 {
3507 struct ifchange *ifchange = (struct ifchange *)obj;
3508 assert( obj->ops == &ifchange_ops );
3509
3510 release_object( ifchange->fd );
3511
3512 /* reset the global ifchange object so that it will be recreated if it is needed again */
3513 assert( obj == ifchange_object );
3514 ifchange_object = NULL;
3515 }
3516
3517 static int ifchange_get_poll_events( struct fd *fd )
3518 {
3519 return POLLIN;
3520 }
3521
3522 /* wake up all the sockets waiting for a change notification event */
3523 static void ifchange_wake_up( struct object *obj, unsigned int status )
3524 {
3525 struct ifchange *ifchange = (struct ifchange *)obj;
3526 struct list *ptr, *next;
3527 assert( obj->ops == &ifchange_ops );
3528 assert( obj == ifchange_object );
3529
3530 LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets )
3531 {
3532 struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry );
3533
3534 assert( sock->ifchange_obj );
3535 async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */
3536 sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */
3537 }
3538 }
3539
3540 static void ifchange_poll_event( struct fd *fd, int event )
3541 {
3542 struct object *ifchange = get_fd_user( fd );
3543 unsigned int status = STATUS_PENDING;
3544 char buffer[PIPE_BUF];
3545 int r;
3546
3547 r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT );
3548 if (r < 0)
3549 {
3550 if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN))
3551 return; /* retry when poll() says the socket is ready */
3552 status = sock_get_ntstatus( errno );
3553 }
3554 else if (r > 0)
3555 {
3556 struct nlmsghdr *nlh;
3557
3558 for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r))
3559 {
3560 if (nlh->nlmsg_type == NLMSG_DONE)
3561 break;
3562 if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR)
3563 status = STATUS_SUCCESS;
3564 }
3565 }
3566 else status = STATUS_CANCELLED;
3567
3568 if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status );
3569 }
3570
3571 #endif
3572
3573 /* we only need one of these interface notification objects, all of the sockets dependent upon
3574 * it will wake up when a notification event occurs */
3575 static struct object *get_ifchange( void )
3576 {
3577 #ifdef HAVE_LINUX_RTNETLINK_H
3578 struct ifchange *ifchange;
3579 struct sockaddr_nl addr;
3580 int unix_fd;
3581
3582 if (ifchange_object)
3583 {
3584 /* increment the refcount for each socket that uses the ifchange object */
3585 return grab_object( ifchange_object );
3586 }
3587
3588 /* create the socket we need for processing interface change notifications */
3589 unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE );
3590 if (unix_fd == -1)
3591 {
3592 set_error( sock_get_ntstatus( errno ));
3593 return NULL;
3594 }
3595 fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */
3596 memset( &addr, 0, sizeof(addr) );
3597 addr.nl_family = AF_NETLINK;
3598 addr.nl_groups = RTMGRP_IPV4_IFADDR;
3599 /* bind the socket to the special netlink kernel interface */
3600 if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1)
3601 {
3602 close( unix_fd );
3603 set_error( sock_get_ntstatus( errno ));
3604 return NULL;
3605 }
3606 if (!(ifchange = alloc_object( &ifchange_ops )))
3607 {
3608 close( unix_fd );
3609 set_error( STATUS_NO_MEMORY );
3610 return NULL;
3611 }
3612 list_init( &ifchange->sockets );
3613 if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 )))
3614 {
3615 release_object( ifchange );
3616 set_error( STATUS_NO_MEMORY );
3617 return NULL;
3618 }
3619 set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */
3620
3621 /* the ifchange object is now successfully configured */
3622 ifchange_object = &ifchange->obj;
3623 return &ifchange->obj;
3624 #else
3625 set_error( STATUS_NOT_SUPPORTED );
3626 return NULL;
3627 #endif
3628 }
3629
3630 /* add the socket to the interface change notification list */
3631 static void ifchange_add_sock( struct object *obj, struct sock *sock )
3632 {
3633 #ifdef HAVE_LINUX_RTNETLINK_H
3634 struct ifchange *ifchange = (struct ifchange *)obj;
3635
3636 list_add_tail( &ifchange->sockets, &sock->ifchange_entry );
3637 #endif
3638 }
3639
3640 /* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */
3641 static struct object *sock_get_ifchange( struct sock *sock )
3642 {
3643 struct object *ifchange;
3644
3645 if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */
3646 return sock->ifchange_obj;
3647
3648 if (!(ifchange = get_ifchange()))
3649 return NULL;
3650
3651 /* add the socket to the ifchange notification list */
3652 ifchange_add_sock( ifchange, sock );
3653 sock->ifchange_obj = ifchange;
3654 return ifchange;
3655 }
3656
3657 /* destroy an existing ifchange queue for a specific socket */
3658 static void sock_release_ifchange( struct sock *sock )
3659 {
3660 if (sock->ifchange_obj)
3661 {
3662 list_remove( &sock->ifchange_entry );
3663 release_object( sock->ifchange_obj );
3664 sock->ifchange_obj = NULL;
3665 }
3666 }
3667
3668 static void socket_device_dump( struct object *obj, int verbose );
3669 static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
3670 unsigned int attr, struct object *root );
3671 static struct object *socket_device_open_file( struct object *obj, unsigned int access,
3672 unsigned int sharing, unsigned int options );
3673
3674 static const struct object_ops socket_device_ops =
3675 {
3676 sizeof(struct object), /* size */
3677 &device_type, /* type */
3678 socket_device_dump, /* dump */
3679 no_add_queue, /* add_queue */
3680 NULL, /* remove_queue */
3681 NULL, /* signaled */
3682 no_satisfied, /* satisfied */
3683 no_signal, /* signal */
3684 no_get_fd, /* get_fd */
3685 default_map_access, /* map_access */
3686 default_get_sd, /* get_sd */
3687 default_set_sd, /* set_sd */
3688 default_get_full_name, /* get_full_name */
3689 socket_device_lookup_name, /* lookup_name */
3690 directory_link_name, /* link_name */
3691 default_unlink_name, /* unlink_name */
3692 socket_device_open_file, /* open_file */
3693 no_kernel_obj_list, /* get_kernel_obj_list */
3694 no_close_handle, /* close_handle */
3695 no_destroy /* destroy */
3696 };
3697
3698 static void socket_device_dump( struct object *obj, int verbose )
3699 {
3700 fputs( "Socket device\n", stderr );
3701 }
3702
3703 static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
3704 unsigned int attr, struct object *root )
3705 {
3706 if (name) name->len = 0;
3707 return NULL;
3708 }
3709
3710 static struct object *socket_device_open_file( struct object *obj, unsigned int access,
3711 unsigned int sharing, unsigned int options )
3712 {
3713 struct sock *sock;
3714
3715 if (!(sock = create_socket())) return NULL;
3716 if (!(sock->fd = alloc_pseudo_fd( &sock_fd_ops, &sock->obj, options )))
3717 {
3718 release_object( sock );
3719 return NULL;
3720 }
3721 return &sock->obj;
3722 }
3723
3724 struct object *create_socket_device( struct object *root, const struct unicode_str *name,
3725 unsigned int attr, const struct security_descriptor *sd )
3726 {
3727 return create_named_object( root, &socket_device_ops, name, attr, sd );
3728 }
3729
3730 DECL_HANDLER(recv_socket)
3731 {
3732 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->async.handle, 0, &sock_ops );
3733 unsigned int status = STATUS_PENDING;
3734 timeout_t timeout = 0;
3735 struct async *async;
3736 struct fd *fd;
3737
3738 if (!sock) return;
3739 fd = sock->fd;
3740
3741 if (!req->force_async && !sock->nonblocking && is_fd_overlapped( fd ))
3742 timeout = (timeout_t)sock->rcvtimeo * -10000;
3743
3744 if (sock->rd_shutdown) status = STATUS_PIPE_DISCONNECTED;
3745 else if (!async_queued( &sock->read_q ))
3746 {
3747 /* If read_q is not empty, we cannot really tell if the already queued
3748 * asyncs will not consume all available data; if there's no data
3749 * available, the current request won't be immediately satiable.
3750 */
3751 if ((!req->force_async && sock->nonblocking) ||
3752 check_fd_events( sock->fd, req->oob && !is_oobinline( sock ) ? POLLPRI : POLLIN ))
3753 {
3754 /* Give the client opportunity to complete synchronously.
3755 * If it turns out that the I/O request is not actually immediately satiable,
3756 * the client may then choose to re-queue the async (with STATUS_PENDING).
3757 *
3758 * Note: If the nonblocking flag is set, we don't poll the socket
3759 * here and always opt for synchronous completion first. This is
3760 * because the application has probably seen POLLIN already from a
3761 * preceding select()/poll() call before it requested to receive
3762 * data.
3763 */
3764 status = STATUS_ALERTED;
3765 }
3766 }
3767
3768 if (status == STATUS_PENDING && !req->force_async && sock->nonblocking)
3769 status = STATUS_DEVICE_NOT_READY;
3770
3771 sock->pending_events &= ~(req->oob ? AFD_POLL_OOB : AFD_POLL_READ);
3772 sock->reported_events &= ~(req->oob ? AFD_POLL_OOB : AFD_POLL_READ);
3773
3774 if ((async = create_request_async( fd, get_fd_comp_flags( fd ), &req->async )))
3775 {
3776 set_error( status );
3777
3778 if (timeout)
3779 async_set_timeout( async, timeout, STATUS_IO_TIMEOUT );
3780
3781 if (status == STATUS_PENDING || status == STATUS_ALERTED)
3782 queue_async( &sock->read_q, async );
3783
3784 /* always reselect; we changed reported_events above */
3785 sock_reselect( sock );
3786
3787 reply->wait = async_handoff( async, NULL, 0 );
3788 reply->options = get_fd_options( fd );
3789 reply->nonblocking = sock->nonblocking;
3790 release_object( async );
3791 }
3792 release_object( sock );
3793 }
3794
3795 static void send_socket_completion_callback( void *private )
3796 {
3797 struct send_req *send_req = private;
3798 struct iosb *iosb = send_req->iosb;
3799 struct sock *sock = send_req->sock;
3800
3801 if (iosb->status != STATUS_SUCCESS)
3802 {
3803 /* send() calls only clear and reselect events if unsuccessful. */
3804 sock->pending_events &= ~AFD_POLL_WRITE;
3805 sock->reported_events &= ~AFD_POLL_WRITE;
3806 sock_reselect( sock );
3807 }
3808
3809 release_object( iosb );
3810 release_object( sock );
3811 free( send_req );
3812 }
3813
3814 DECL_HANDLER(send_socket)
3815 {
3816 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->async.handle, 0, &sock_ops );
3817 unsigned int status = STATUS_PENDING;
3818 timeout_t timeout = 0;
3819 struct async *async;
3820 struct fd *fd;
3821 int bind_errno = 0;
3822
3823 if (!sock) return;
3824 fd = sock->fd;
3825
3826 if (sock->type == WS_SOCK_DGRAM && !sock->bound)
3827 {
3828 union unix_sockaddr unix_addr;
3829 socklen_t unix_len;
3830 int unix_fd = get_unix_fd( fd );
3831
3832 unix_len = get_unix_sockaddr_any( &unix_addr, sock->family );
3833 if (bind( unix_fd, &unix_addr.addr, unix_len ) < 0)
3834 bind_errno = errno;
3835
3836 if (getsockname( unix_fd, &unix_addr.addr, &unix_len ) >= 0)
3837 {
3838 sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) );
3839 sock->bound = 1;
3840 }
3841 else if (!bind_errno) bind_errno = errno;
3842 }
3843
3844 if (!req->force_async && !sock->nonblocking && is_fd_overlapped( fd ))
3845 timeout = (timeout_t)sock->sndtimeo * -10000;
3846
3847 if (bind_errno) status = sock_get_ntstatus( bind_errno );
3848 else if (sock->wr_shutdown) status = STATUS_PIPE_DISCONNECTED;
3849 else if (!async_queued( &sock->write_q ))
3850 {
3851 /* If write_q is not empty, we cannot really tell if the already queued
3852 * asyncs will not consume all available space; if there's no space
3853 * available, the current request won't be immediately satiable.
3854 */
3855 if ((!req->force_async && sock->nonblocking) || check_fd_events( sock->fd, POLLOUT ))
3856 {
3857 /* Give the client opportunity to complete synchronously.
3858 * If it turns out that the I/O request is not actually immediately satiable,
3859 * the client may then choose to re-queue the async (with STATUS_PENDING).
3860 *
3861 * Note: If the nonblocking flag is set, we don't poll the socket
3862 * here and always opt for synchronous completion first. This is
3863 * because the application has probably seen POLLOUT already from a
3864 * preceding select()/poll() call before it requested to send data.
3865 *
3866 * Furthermore, some applications expect that any send() call on a
3867 * socket that has indicated POLLOUT beforehand never fails with
3868 * WSAEWOULDBLOCK. It's possible that Linux poll() may yield
3869 * POLLOUT on the first call but not the second, even if no send()
3870 * call has been made in the meanwhile. This can happen for a
3871 * number of reasons; for example, TCP fragmentation may consume
3872 * extra buffer space for each packet that has been split out, or
3873 * the TCP/IP networking stack may decide to shrink the send buffer
3874 * due to memory pressure.
3875 */
3876 status = STATUS_ALERTED;
3877 }
3878 }
3879
3880 if (status == STATUS_PENDING && !req->force_async && sock->nonblocking)
3881 status = STATUS_DEVICE_NOT_READY;
3882
3883 if ((async = create_request_async( fd, get_fd_comp_flags( fd ), &req->async )))
3884 {
3885 struct send_req *send_req;
3886 struct iosb *iosb = async_get_iosb( async );
3887
3888 if ((send_req = mem_alloc( sizeof(*send_req) )))
3889 {
3890 send_req->iosb = (struct iosb *)grab_object( iosb );
3891 send_req->sock = (struct sock *)grab_object( sock );
3892 async_set_completion_callback( async, send_socket_completion_callback, send_req );
3893 }
3894 else if (status == STATUS_PENDING || status == STATUS_DEVICE_NOT_READY)
3895 status = STATUS_NO_MEMORY;
3896
3897 release_object( iosb );
3898
3899 set_error( status );
3900
3901 if (timeout)
3902 async_set_timeout( async, timeout, STATUS_IO_TIMEOUT );
3903
3904 if (status == STATUS_PENDING || status == STATUS_ALERTED)
3905 {
3906 queue_async( &sock->write_q, async );
3907 sock_reselect( sock );
3908 }
3909
3910 reply->wait = async_handoff( async, NULL, 0 );
3911 reply->options = get_fd_options( fd );
3912 reply->nonblocking = sock->nonblocking;
3913 release_object( async );
3914 }
3915 release_object( sock );
3916 }
3917
3918 DECL_HANDLER(socket_send_icmp_id)
3919 {
3920 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->handle, 0, &sock_ops );
3921
3922 if (!sock) return;
3923
3924 if (sock->icmp_fixup_data_len == MAX_ICMP_HISTORY_LENGTH)
3925 {
3926 memmove( sock->icmp_fixup_data, sock->icmp_fixup_data + 1,
3927 sizeof(*sock->icmp_fixup_data) * (MAX_ICMP_HISTORY_LENGTH - 1) );
3928 --sock->icmp_fixup_data_len;
3929 }
3930
3931 sock->icmp_fixup_data[sock->icmp_fixup_data_len].icmp_id = req->icmp_id;
3932 sock->icmp_fixup_data[sock->icmp_fixup_data_len].icmp_seq = req->icmp_seq;
3933 ++sock->icmp_fixup_data_len;
3934
3935 release_object( sock );
3936 }
3937
3938 DECL_HANDLER(socket_get_icmp_id)
3939 {
3940 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->handle, 0, &sock_ops );
3941 unsigned int i;
3942
3943 if (!sock) return;
3944
3945 for (i = 0; i < sock->icmp_fixup_data_len; ++i)
3946 {
3947 if (sock->icmp_fixup_data[i].icmp_seq == req->icmp_seq)
3948 {
3949 reply->icmp_id = sock->icmp_fixup_data[i].icmp_id;
3950 --sock->icmp_fixup_data_len;
3951 memmove( &sock->icmp_fixup_data[i], &sock->icmp_fixup_data[i + 1],
3952 (sock->icmp_fixup_data_len - i) * sizeof(*sock->icmp_fixup_data) );
3953 release_object( sock );
3954 return;
3955 }
3956 }
3957
3958 set_error( STATUS_NOT_FOUND );
3959 release_object( sock );
3960 }
Windows API implementation