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wined3d/glsl: Clamp ftoi lower bound to INT_MIN.
[wine.git] / server / sock.c
blobf774cded733c3ba3db074284ecdd335bedc67462
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 #ifdef HAVE_NETINET_TCP_H
43 # include <netinet/tcp.h>
44 #endif
45 #include <poll.h>
46 #include <sys/time.h>
47 #include <sys/types.h>
48 #include <sys/socket.h>
49 #include <sys/ioctl.h>
50 #ifdef HAVE_SYS_FILIO_H
51 # include <sys/filio.h>
52 #endif
53 #include <time.h>
54 #include <unistd.h>
55 #include <limits.h>
56 #ifdef HAVE_LINUX_FILTER_H
57 # include <linux/filter.h>
58 #endif
59 #ifdef HAVE_LINUX_RTNETLINK_H
60 # include <linux/rtnetlink.h>
61 #endif
62
63 #ifdef HAVE_NETIPX_IPX_H
64 # include <netipx/ipx.h>
65 # define HAS_IPX
66 #elif defined(HAVE_LINUX_IPX_H)
67 # ifdef HAVE_ASM_TYPES_H
68 # include <asm/types.h>
69 # endif
70 # ifdef HAVE_LINUX_TYPES_H
71 # include <linux/types.h>
72 # endif
73 # include <linux/ipx.h>
74 # ifdef SOL_IPX
75 # define HAS_IPX
76 # endif
77 #endif
78
79 #ifdef HAVE_LINUX_IRDA_H
80 # ifdef HAVE_LINUX_TYPES_H
81 # include <linux/types.h>
82 # endif
83 # include <linux/irda.h>
84 # define HAS_IRDA
85 #endif
86
87 #include "ntstatus.h"
88 #define WIN32_NO_STATUS
89 #include "windef.h"
90 #include "winternl.h"
91 #include "winerror.h"
92 #define USE_WS_PREFIX
93 #include "winsock2.h"
94 #include "ws2tcpip.h"
95 #include "wsipx.h"
96 #include "af_irda.h"
97 #include "wine/afd.h"
98 #include "wine/rbtree.h"
99
100 #include "process.h"
101 #include "file.h"
102 #include "handle.h"
103 #include "thread.h"
104 #include "request.h"
105 #include "user.h"
106
107 #if defined(linux) && !defined(IP_UNICAST_IF)
108 #define IP_UNICAST_IF 50
109 #endif
110
111 static const char magic_loopback_addr[] = {127, 12, 34, 56};
112
113 union win_sockaddr
114 {
115 struct WS_sockaddr addr;
116 struct WS_sockaddr_in in;
117 struct WS_sockaddr_in6 in6;
118 struct WS_sockaddr_ipx ipx;
119 SOCKADDR_IRDA irda;
120 };
121
122 union unix_sockaddr
123 {
124 struct sockaddr addr;
125 struct sockaddr_in in;
126 struct sockaddr_in6 in6;
127 #ifdef HAS_IPX
128 struct sockaddr_ipx ipx;
129 #endif
130 #ifdef HAS_IRDA
131 struct sockaddr_irda irda;
132 #endif
133 };
134
135 static struct list poll_list = LIST_INIT( poll_list );
136
137 struct poll_req
138 {
139 struct list entry;
140 struct async *async;
141 struct iosb *iosb;
142 struct timeout_user *timeout;
143 timeout_t orig_timeout;
144 int exclusive;
145 int pending;
146 unsigned int count;
147 struct
148 {
149 struct sock *sock;
150 int mask;
151 obj_handle_t handle;
152 int flags;
153 unsigned int status;
154 } sockets[1];
155 };
156
157 struct accept_req
158 {
159 struct list entry;
160 struct async *async;
161 struct iosb *iosb;
162 struct sock *sock, *acceptsock;
163 int accepted;
164 unsigned int recv_len, local_len;
165 };
166
167 struct connect_req
168 {
169 struct async *async;
170 struct iosb *iosb;
171 struct sock *sock;
172 unsigned int addr_len, send_len, send_cursor;
173 };
174
175 struct send_req
176 {
177 struct iosb *iosb;
178 struct sock *sock;
179 };
180
181 enum connection_state
182 {
183 SOCK_LISTENING,
184 SOCK_UNCONNECTED,
185 SOCK_CONNECTING,
186 SOCK_CONNECTED,
187 SOCK_CONNECTIONLESS,
188 };
189
190 struct bound_addr
191 {
192 struct rb_entry entry;
193 union unix_sockaddr addr;
194 int match_any_addr;
195 int reuse_count;
196 };
197
198 #define MAX_ICMP_HISTORY_LENGTH 8
199
200 #define MIN_RCVBUF 65536
201
202 struct sock
203 {
204 struct object obj; /* object header */
205 struct fd *fd; /* socket file descriptor */
206 enum connection_state state; /* connection state */
207 unsigned int mask; /* event mask */
208 /* pending AFD_POLL_* events which have not yet been reported to the application */
209 unsigned int pending_events;
210 /* AFD_POLL_* events which have already been reported and should not be
211 * selected for again until reset by a relevant call.
212 *
213 * For example, if AFD_POLL_READ is set here and not in pending_events, it
214 * has already been reported and consumed, and we should not report it
215 * again, even if POLLIN is signaled, until it is reset by e.g recv().
216 *
217 * If an event has been signaled and not consumed yet, it will be set in
218 * both pending_events and reported_events (as we should only ever report
219 * any event once until it is reset.) */
220 unsigned int reported_events;
221 unsigned short proto; /* socket protocol */
222 unsigned short type; /* socket type */
223 unsigned short family; /* socket family */
224 struct event *event; /* event object */
225 user_handle_t window; /* window to send the message to */
226 unsigned int message; /* message to send */
227 obj_handle_t wparam; /* message wparam (socket handle) */
228 int errors[AFD_POLL_BIT_COUNT]; /* event errors */
229 timeout_t connect_time;/* time the socket was connected */
230 struct sock *deferred; /* socket that waits for a deferred accept */
231 struct async_queue read_q; /* queue for asynchronous reads */
232 struct async_queue write_q; /* queue for asynchronous writes */
233 struct async_queue ifchange_q; /* queue for interface change notifications */
234 struct async_queue accept_q; /* queue for asynchronous accepts */
235 struct async_queue connect_q; /* queue for asynchronous connects */
236 struct async_queue poll_q; /* queue for asynchronous polls */
237 struct object *ifchange_obj; /* the interface change notification object */
238 struct list ifchange_entry; /* entry in ifchange notification list */
239 struct list accept_list; /* list of pending accept requests */
240 struct accept_req *accept_recv_req; /* pending accept-into request which will recv on this socket */
241 struct connect_req *connect_req; /* pending connection request */
242 struct poll_req *main_poll; /* main poll */
243 union win_sockaddr addr; /* socket name */
244 int addr_len; /* socket name length */
245 union win_sockaddr peer_addr; /* peer name */
246 int peer_addr_len; /* peer name length */
247 unsigned int rcvbuf; /* advisory recv buffer size */
248 unsigned int sndbuf; /* advisory send buffer size */
249 unsigned int rcvtimeo; /* receive timeout in ms */
250 unsigned int sndtimeo; /* send timeout in ms */
251 struct
252 {
253 unsigned short icmp_id;
254 unsigned short icmp_seq;
255 }
256 icmp_fixup_data[MAX_ICMP_HISTORY_LENGTH]; /* Sent ICMP packets history used to fixup reply id. */
257 struct bound_addr *bound_addr[2]; /* Links to the entries in bound addresses tree. */
258 unsigned int icmp_fixup_data_len; /* Sent ICMP packets history length. */
259 unsigned int rd_shutdown : 1; /* is the read end shut down? */
260 unsigned int wr_shutdown : 1; /* is the write end shut down? */
261 unsigned int wr_shutdown_pending : 1; /* is a write shutdown pending? */
262 unsigned int hangup : 1; /* has the read end received a hangup? */
263 unsigned int aborted : 1; /* did we get a POLLERR or irregular POLLHUP? */
264 unsigned int nonblocking : 1; /* is the socket nonblocking? */
265 unsigned int bound : 1; /* is the socket bound? */
266 unsigned int reset : 1; /* did we get a TCP reset? */
267 unsigned int reuseaddr : 1; /* winsock SO_REUSEADDR option value */
268 unsigned int exclusiveaddruse : 1; /* winsock SO_EXCLUSIVEADDRUSE option value */
269 };
270
271 static int is_tcp_socket( struct sock *sock )
272 {
273 return sock->type == WS_SOCK_STREAM && (sock->family == WS_AF_INET || sock->family == WS_AF_INET6);
274 }
275
276 static int addr_compare( const void *key, const struct wine_rb_entry *entry )
277 {
278 const struct bound_addr *bound_addr = RB_ENTRY_VALUE(entry, struct bound_addr, entry);
279 const struct bound_addr *addr = key;
280
281 if (addr->addr.addr.sa_family != bound_addr->addr.addr.sa_family)
282 return addr->addr.addr.sa_family < bound_addr->addr.addr.sa_family ? -1 : 1;
283
284 if (addr->addr.addr.sa_family == AF_INET)
285 {
286 if (addr->addr.in.sin_port != bound_addr->addr.in.sin_port)
287 return addr->addr.in.sin_port < bound_addr->addr.in.sin_port ? -1 : 1;
288 if (bound_addr->match_any_addr || addr->match_any_addr
289 || addr->addr.in.sin_addr.s_addr == bound_addr->addr.in.sin_addr.s_addr)
290 return 0;
291 return addr->addr.in.sin_addr.s_addr < bound_addr->addr.in.sin_addr.s_addr ? -1 : 1;
292 }
293
294 assert( addr->addr.addr.sa_family == AF_INET6 );
295 if (addr->addr.in6.sin6_port != bound_addr->addr.in6.sin6_port)
296 return addr->addr.in6.sin6_port < bound_addr->addr.in6.sin6_port ? -1 : 1;
297 if (bound_addr->match_any_addr || addr->match_any_addr) return 0;
298 return memcmp( &addr->addr.in6.sin6_addr, &bound_addr->addr.in6.sin6_addr, sizeof(addr->addr.in6.sin6_addr) );
299 }
300
301 static int ipv4addr_from_v6( union unix_sockaddr *v4addr, const struct sockaddr_in6 *in6, int map_unspecified )
302 {
303 v4addr->in.sin_family = AF_INET;
304 v4addr->in.sin_port = in6->sin6_port;
305
306 if (map_unspecified && IN6_IS_ADDR_UNSPECIFIED(&in6->sin6_addr))
307 {
308 v4addr->in.sin_addr.s_addr = htonl( INADDR_ANY );
309 return 1;
310 }
311 if (IN6_IS_ADDR_V4COMPAT(&in6->sin6_addr) || IN6_IS_ADDR_V4MAPPED(&in6->sin6_addr))
312 {
313 memcpy( &v4addr->in.sin_addr.s_addr, &in6->sin6_addr.s6_addr[12], sizeof(v4addr->in.sin_addr.s_addr) );
314 return 1;
315 }
316 return 0;
317 }
318
319 static struct rb_tree bound_addresses_tree = { addr_compare };
320
321 static int should_track_conflicts_for_addr( struct sock *sock, const union unix_sockaddr *addr )
322 {
323 if (!is_tcp_socket( sock )) return 0;
324
325 if (sock->family == WS_AF_INET && addr->addr.sa_family == AF_INET && addr->in.sin_port)
326 return 1;
327 else if (sock->family == WS_AF_INET6 && addr->addr.sa_family == AF_INET6 && addr->in6.sin6_port)
328 return 1;
329
330 return 0;
331 }
332
333 static int is_any_addr( const union unix_sockaddr *addr )
334 {
335 if (addr->addr.sa_family == AF_INET && addr->in.sin_addr.s_addr == htonl( INADDR_ANY ))
336 return 1;
337 if (addr->addr.sa_family == AF_INET6 && IN6_IS_ADDR_UNSPECIFIED(&addr->in6.sin6_addr))
338 return 1;
339 return 0;
340 }
341
342 static int check_addr_usage( struct sock *sock, const union unix_sockaddr *addr, int v6only )
343 {
344 struct bound_addr *bound_addr, search_addr;
345 struct rb_entry *entry;
346
347 if (!should_track_conflicts_for_addr( sock, addr )) return 0;
348
349 search_addr.addr = *addr;
350 search_addr.match_any_addr = sock->exclusiveaddruse && is_any_addr( addr );
351
352 if ((entry = rb_get( &bound_addresses_tree, &search_addr )))
353 {
354 bound_addr = WINE_RB_ENTRY_VALUE(entry, struct bound_addr, entry);
355 if (bound_addr->reuse_count == -1 || !sock->reuseaddr)
356 {
357 set_error( sock->reuseaddr || bound_addr->match_any_addr
358 ? STATUS_ACCESS_DENIED : STATUS_SHARING_VIOLATION );
359 return 1;
360 }
361 }
362
363 if (sock->family != WS_AF_INET6 || v6only) return 0;
364 if (!ipv4addr_from_v6( &search_addr.addr, &addr->in6, sock->exclusiveaddruse )) return 0;
365
366 search_addr.match_any_addr = sock->exclusiveaddruse && is_any_addr( &search_addr.addr );
367 if ((entry = rb_get( &bound_addresses_tree, &search_addr )))
368 {
369 bound_addr = WINE_RB_ENTRY_VALUE(entry, struct bound_addr, entry);
370 if (bound_addr->reuse_count == -1 || !sock->reuseaddr)
371 {
372 set_error( sock->reuseaddr || bound_addr->match_any_addr
373 ? STATUS_ACCESS_DENIED : STATUS_SHARING_VIOLATION );
374 return 1;
375 }
376 }
377 return 0;
378 }
379
380 static struct bound_addr *register_bound_address( struct sock *sock, const union unix_sockaddr *addr )
381 {
382 struct bound_addr *bound_addr, *temp;
383
384 if (!(bound_addr = mem_alloc( sizeof(*bound_addr) )))
385 return NULL;
386
387 bound_addr->addr = *addr;
388 bound_addr->match_any_addr = sock->exclusiveaddruse && is_any_addr( addr );
389
390 if (rb_put( &bound_addresses_tree, bound_addr, &bound_addr->entry ))
391 {
392 temp = bound_addr;
393 bound_addr = WINE_RB_ENTRY_VALUE(rb_get( &bound_addresses_tree, temp ), struct bound_addr, entry);
394 free( temp );
395 if (bound_addr->reuse_count == -1)
396 {
397 if (debug_level)
398 fprintf( stderr, "register_bound_address: address being updated is already exclusively bound\n" );
399 return NULL;
400 }
401 ++bound_addr->reuse_count;
402 }
403 else
404 {
405 bound_addr->reuse_count = sock->reuseaddr ? 1 : -1;
406 }
407 return bound_addr;
408 }
409
410 static void update_addr_usage( struct sock *sock, const union unix_sockaddr *addr, int v6only )
411 {
412 union unix_sockaddr v4addr;
413
414 assert( !sock->bound_addr[0] && !sock->bound_addr[1] );
415
416 if (!should_track_conflicts_for_addr( sock, addr )) return;
417
418 sock->bound_addr[0] = register_bound_address( sock, addr );
419
420 if (sock->family != WS_AF_INET6 || v6only) return;
421
422 if (!ipv4addr_from_v6( &v4addr, &addr->in6, sock->exclusiveaddruse )) return;
423
424 sock->bound_addr[1] = register_bound_address( sock, &v4addr );
425 }
426
427 static void sock_dump( struct object *obj, int verbose );
428 static struct fd *sock_get_fd( struct object *obj );
429 static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle );
430 static void sock_destroy( struct object *obj );
431 static struct object *sock_get_ifchange( struct sock *sock );
432 static void sock_release_ifchange( struct sock *sock );
433
434 static int sock_get_poll_events( struct fd *fd );
435 static void sock_poll_event( struct fd *fd, int event );
436 static enum server_fd_type sock_get_fd_type( struct fd *fd );
437 static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
438 static void sock_cancel_async( struct fd *fd, struct async *async );
439 static void sock_reselect_async( struct fd *fd, struct async_queue *queue );
440
441 static int accept_into_socket( struct sock *sock, struct sock *acceptsock );
442 static struct sock *accept_socket( struct sock *sock );
443 static int sock_get_ntstatus( int err );
444 static unsigned int sock_get_error( int err );
445 static void poll_socket( struct sock *poll_sock, struct async *async, int exclusive, timeout_t timeout,
446 unsigned int count, const struct afd_poll_socket_64 *sockets );
447
448 static const struct object_ops sock_ops =
449 {
450 sizeof(struct sock), /* size */
451 &file_type, /* type */
452 sock_dump, /* dump */
453 add_queue, /* add_queue */
454 remove_queue, /* remove_queue */
455 default_fd_signaled, /* signaled */
456 no_satisfied, /* satisfied */
457 no_signal, /* signal */
458 sock_get_fd, /* get_fd */
459 default_map_access, /* map_access */
460 default_get_sd, /* get_sd */
461 default_set_sd, /* set_sd */
462 no_get_full_name, /* get_full_name */
463 no_lookup_name, /* lookup_name */
464 no_link_name, /* link_name */
465 NULL, /* unlink_name */
466 no_open_file, /* open_file */
467 no_kernel_obj_list, /* get_kernel_obj_list */
468 sock_close_handle, /* close_handle */
469 sock_destroy /* destroy */
470 };
471
472 static const struct fd_ops sock_fd_ops =
473 {
474 sock_get_poll_events, /* get_poll_events */
475 sock_poll_event, /* poll_event */
476 sock_get_fd_type, /* get_fd_type */
477 no_fd_read, /* read */
478 no_fd_write, /* write */
479 no_fd_flush, /* flush */
480 default_fd_get_file_info, /* get_file_info */
481 no_fd_get_volume_info, /* get_volume_info */
482 sock_ioctl, /* ioctl */
483 sock_cancel_async, /* cancel_async */
484 no_fd_queue_async, /* queue_async */
485 sock_reselect_async /* reselect_async */
486 };
487
488 static int sockaddr_from_unix( const union unix_sockaddr *uaddr, struct WS_sockaddr *wsaddr, socklen_t wsaddrlen )
489 {
490 memset( wsaddr, 0, wsaddrlen );
491
492 switch (uaddr->addr.sa_family)
493 {
494 case AF_INET:
495 {
496 struct WS_sockaddr_in win = {0};
497
498 if (wsaddrlen < sizeof(win)) return -1;
499 win.sin_family = WS_AF_INET;
500 win.sin_port = uaddr->in.sin_port;
501 memcpy( &win.sin_addr, &uaddr->in.sin_addr, sizeof(win.sin_addr) );
502 memcpy( wsaddr, &win, sizeof(win) );
503 return sizeof(win);
504 }
505
506 case AF_INET6:
507 {
508 struct WS_sockaddr_in6 win = {0};
509
510 if (wsaddrlen < sizeof(win)) return -1;
511 win.sin6_family = WS_AF_INET6;
512 win.sin6_port = uaddr->in6.sin6_port;
513 win.sin6_flowinfo = uaddr->in6.sin6_flowinfo;
514 memcpy( &win.sin6_addr, &uaddr->in6.sin6_addr, sizeof(win.sin6_addr) );
515 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
516 win.sin6_scope_id = uaddr->in6.sin6_scope_id;
517 #endif
518 memcpy( wsaddr, &win, sizeof(win) );
519 return sizeof(win);
520 }
521
522 #ifdef HAS_IPX
523 case AF_IPX:
524 {
525 struct WS_sockaddr_ipx win = {0};
526
527 if (wsaddrlen < sizeof(win)) return -1;
528 win.sa_family = WS_AF_IPX;
529 memcpy( win.sa_netnum, &uaddr->ipx.sipx_network, sizeof(win.sa_netnum) );
530 memcpy( win.sa_nodenum, &uaddr->ipx.sipx_node, sizeof(win.sa_nodenum) );
531 win.sa_socket = uaddr->ipx.sipx_port;
532 memcpy( wsaddr, &win, sizeof(win) );
533 return sizeof(win);
534 }
535 #endif
536
537 #ifdef HAS_IRDA
538 case AF_IRDA:
539 {
540 SOCKADDR_IRDA win;
541
542 if (wsaddrlen < sizeof(win)) return -1;
543 win.irdaAddressFamily = WS_AF_IRDA;
544 memcpy( win.irdaDeviceID, &uaddr->irda.sir_addr, sizeof(win.irdaDeviceID) );
545 if (uaddr->irda.sir_lsap_sel != LSAP_ANY)
546 snprintf( win.irdaServiceName, sizeof(win.irdaServiceName), "LSAP-SEL%u", uaddr->irda.sir_lsap_sel );
547 else
548 memcpy( win.irdaServiceName, uaddr->irda.sir_name, sizeof(win.irdaServiceName) );
549 memcpy( wsaddr, &win, sizeof(win) );
550 return sizeof(win);
551 }
552 #endif
553
554 case AF_UNSPEC:
555 return 0;
556
557 default:
558 return -1;
559
560 }
561 }
562
563 static socklen_t sockaddr_to_unix( const struct WS_sockaddr *wsaddr, int wsaddrlen, union unix_sockaddr *uaddr )
564 {
565 memset( uaddr, 0, sizeof(*uaddr) );
566
567 switch (wsaddr->sa_family)
568 {
569 case WS_AF_INET:
570 {
571 struct WS_sockaddr_in win = {0};
572
573 if (wsaddrlen < sizeof(win)) return 0;
574 memcpy( &win, wsaddr, sizeof(win) );
575 uaddr->in.sin_family = AF_INET;
576 uaddr->in.sin_port = win.sin_port;
577 memcpy( &uaddr->in.sin_addr, &win.sin_addr, sizeof(win.sin_addr) );
578 return sizeof(uaddr->in);
579 }
580
581 case WS_AF_INET6:
582 {
583 struct WS_sockaddr_in6 win = {0};
584
585 if (wsaddrlen < sizeof(win)) return 0;
586 memcpy( &win, wsaddr, sizeof(win) );
587 uaddr->in6.sin6_family = AF_INET6;
588 uaddr->in6.sin6_port = win.sin6_port;
589 uaddr->in6.sin6_flowinfo = win.sin6_flowinfo;
590 memcpy( &uaddr->in6.sin6_addr, &win.sin6_addr, sizeof(win.sin6_addr) );
591 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
592 uaddr->in6.sin6_scope_id = win.sin6_scope_id;
593 #endif
594 return sizeof(uaddr->in6);
595 }
596
597 #ifdef HAS_IPX
598 case WS_AF_IPX:
599 {
600 struct WS_sockaddr_ipx win = {0};
601
602 if (wsaddrlen < sizeof(win)) return 0;
603 memcpy( &win, wsaddr, sizeof(win) );
604 uaddr->ipx.sipx_family = AF_IPX;
605 memcpy( &uaddr->ipx.sipx_network, win.sa_netnum, sizeof(win.sa_netnum) );
606 memcpy( &uaddr->ipx.sipx_node, win.sa_nodenum, sizeof(win.sa_nodenum) );
607 uaddr->ipx.sipx_port = win.sa_socket;
608 return sizeof(uaddr->ipx);
609 }
610 #endif
611
612 #ifdef HAS_IRDA
613 case WS_AF_IRDA:
614 {
615 SOCKADDR_IRDA win = {0};
616 unsigned int lsap_sel;
617
618 if (wsaddrlen < sizeof(win)) return 0;
619 memcpy( &win, wsaddr, sizeof(win) );
620 uaddr->irda.sir_family = AF_IRDA;
621 if (sscanf( win.irdaServiceName, "LSAP-SEL%u", &lsap_sel ) == 1)
622 uaddr->irda.sir_lsap_sel = lsap_sel;
623 else
624 {
625 uaddr->irda.sir_lsap_sel = LSAP_ANY;
626 memcpy( uaddr->irda.sir_name, win.irdaServiceName, sizeof(win.irdaServiceName) );
627 }
628 memcpy( &uaddr->irda.sir_addr, win.irdaDeviceID, sizeof(win.irdaDeviceID) );
629 return sizeof(uaddr->irda);
630 }
631 #endif
632
633 case WS_AF_UNSPEC:
634 switch (wsaddrlen)
635 {
636 default: /* likely an ipv4 address */
637 case sizeof(struct WS_sockaddr_in):
638 return sizeof(uaddr->in);
639
640 #ifdef HAS_IPX
641 case sizeof(struct WS_sockaddr_ipx):
642 return sizeof(uaddr->ipx);
643 #endif
644
645 #ifdef HAS_IRDA
646 case sizeof(SOCKADDR_IRDA):
647 return sizeof(uaddr->irda);
648 #endif
649
650 case sizeof(struct WS_sockaddr_in6):
651 return sizeof(uaddr->in6);
652 }
653
654 default:
655 return 0;
656 }
657 }
658
659 static socklen_t get_unix_sockaddr_any( union unix_sockaddr *uaddr, int ws_family )
660 {
661 memset( uaddr, 0, sizeof(*uaddr) );
662 switch (ws_family)
663 {
664 case WS_AF_INET:
665 uaddr->in.sin_family = AF_INET;
666 return sizeof(uaddr->in);
667 case WS_AF_INET6:
668 uaddr->in6.sin6_family = AF_INET6;
669 return sizeof(uaddr->in6);
670 #ifdef HAS_IPX
671 case WS_AF_IPX:
672 uaddr->ipx.sipx_family = AF_IPX;
673 return sizeof(uaddr->ipx);
674 #endif
675 #ifdef HAS_IRDA
676 case WS_AF_IRDA:
677 uaddr->irda.sir_family = AF_IRDA;
678 return sizeof(uaddr->irda);
679 #endif
680 default:
681 return 0;
682 }
683 }
684
685 /* some events are generated at the same time but must be sent in a particular
686 * order (e.g. CONNECT must be sent before READ) */
687 static const enum afd_poll_bit event_bitorder[] =
688 {
689 AFD_POLL_BIT_CONNECT,
690 AFD_POLL_BIT_CONNECT_ERR,
691 AFD_POLL_BIT_ACCEPT,
692 AFD_POLL_BIT_OOB,
693 AFD_POLL_BIT_READ,
694 AFD_POLL_BIT_WRITE,
695 AFD_POLL_BIT_RESET,
696 AFD_POLL_BIT_HUP,
697 AFD_POLL_BIT_CLOSE,
698 };
699
700 typedef enum {
701 SOCK_SHUTDOWN_ERROR = -1,
702 SOCK_SHUTDOWN_EOF = 0,
703 SOCK_SHUTDOWN_POLLHUP = 1
704 } sock_shutdown_t;
705
706 static sock_shutdown_t sock_shutdown_type = SOCK_SHUTDOWN_ERROR;
707
708 static sock_shutdown_t sock_check_pollhup(void)
709 {
710 sock_shutdown_t ret = SOCK_SHUTDOWN_ERROR;
711 int fd[2], n;
712 struct pollfd pfd;
713 char dummy;
714
715 if ( socketpair( AF_UNIX, SOCK_STREAM, 0, fd ) ) return ret;
716 if ( shutdown( fd[0], 1 ) ) goto out;
717
718 pfd.fd = fd[1];
719 pfd.events = POLLIN;
720 pfd.revents = 0;
721
722 /* Solaris' poll() sometimes returns nothing if given a 0ms timeout here */
723 n = poll( &pfd, 1, 1 );
724 if ( n != 1 ) goto out; /* error or timeout */
725 if ( pfd.revents & POLLHUP )
726 ret = SOCK_SHUTDOWN_POLLHUP;
727 else if ( pfd.revents & POLLIN &&
728 read( fd[1], &dummy, 1 ) == 0 )
729 ret = SOCK_SHUTDOWN_EOF;
730
731 out:
732 close( fd[0] );
733 close( fd[1] );
734 return ret;
735 }
736
737 void sock_init(void)
738 {
739 sock_shutdown_type = sock_check_pollhup();
740
741 switch ( sock_shutdown_type )
742 {
743 case SOCK_SHUTDOWN_EOF:
744 if (debug_level) fprintf( stderr, "sock_init: shutdown() causes EOF\n" );
745 break;
746 case SOCK_SHUTDOWN_POLLHUP:
747 if (debug_level) fprintf( stderr, "sock_init: shutdown() causes POLLHUP\n" );
748 break;
749 default:
750 fprintf( stderr, "sock_init: ERROR in sock_check_pollhup()\n" );
751 sock_shutdown_type = SOCK_SHUTDOWN_EOF;
752 }
753 }
754
755 static void sock_reselect( struct sock *sock )
756 {
757 int ev = sock_get_poll_events( sock->fd );
758
759 if (debug_level)
760 fprintf(stderr,"sock_reselect(%p): new mask %x\n", sock, ev);
761
762 set_fd_events( sock->fd, ev );
763 }
764
765 static unsigned int afd_poll_flag_to_win32( unsigned int flags )
766 {
767 static const unsigned int map[] =
768 {
769 FD_READ, /* READ */
770 FD_OOB, /* OOB */
771 FD_WRITE, /* WRITE */
772 FD_CLOSE, /* HUP */
773 FD_CLOSE, /* RESET */
774 0, /* CLOSE */
775 FD_CONNECT, /* CONNECT */
776 FD_ACCEPT, /* ACCEPT */
777 FD_CONNECT, /* CONNECT_ERR */
778 };
779
780 unsigned int i, ret = 0;
781
782 for (i = 0; i < ARRAY_SIZE(map); ++i)
783 {
784 if (flags & (1 << i)) ret |= map[i];
785 }
786
787 return ret;
788 }
789
790 static void post_sock_messages( struct sock *sock )
791 {
792 unsigned int events = sock->pending_events & sock->mask;
793 int i;
794
795 if (sock->window)
796 {
797 if (debug_level) fprintf(stderr, "signalling events %x win %08x\n", events, sock->window );
798 for (i = 0; i < ARRAY_SIZE(event_bitorder); i++)
799 {
800 enum afd_poll_bit event = event_bitorder[i];
801 if (events & (1 << event))
802 {
803 lparam_t lparam = afd_poll_flag_to_win32(1 << event) | (sock_get_error( sock->errors[event] ) << 16);
804 post_message( sock->window, sock->message, sock->wparam, lparam );
805 }
806 }
807 sock->pending_events = 0;
808 sock_reselect( sock );
809 }
810 }
811
812 static inline int sock_error( struct sock *sock )
813 {
814 int error = 0;
815 socklen_t len = sizeof(error);
816
817 getsockopt( get_unix_fd(sock->fd), SOL_SOCKET, SO_ERROR, (void *)&error, &len);
818
819 switch (sock->state)
820 {
821 case SOCK_UNCONNECTED:
822 break;
823
824 case SOCK_CONNECTING:
825 if (error)
826 sock->errors[AFD_POLL_BIT_CONNECT_ERR] = error;
827 else
828 error = sock->errors[AFD_POLL_BIT_CONNECT_ERR];
829 break;
830
831 case SOCK_LISTENING:
832 if (error)
833 sock->errors[AFD_POLL_BIT_ACCEPT] = error;
834 else
835 error = sock->errors[AFD_POLL_BIT_ACCEPT];
836 break;
837
838 case SOCK_CONNECTED:
839 case SOCK_CONNECTIONLESS:
840 if (error == ECONNRESET || error == EPIPE)
841 {
842 sock->reset = 1;
843 error = 0;
844 }
845 else if (error)
846 sock->errors[AFD_POLL_BIT_HUP] = error;
847 else
848 error = sock->errors[AFD_POLL_BIT_HUP];
849 break;
850 }
851
852 return error;
853 }
854
855 static void free_accept_req( void *private )
856 {
857 struct accept_req *req = private;
858 list_remove( &req->entry );
859 if (req->acceptsock)
860 {
861 req->acceptsock->accept_recv_req = NULL;
862 release_object( req->acceptsock );
863 }
864 release_object( req->async );
865 release_object( req->iosb );
866 release_object( req->sock );
867 free( req );
868 }
869
870 static void fill_accept_output( struct accept_req *req )
871 {
872 const data_size_t out_size = req->iosb->out_size;
873 struct async *async = req->async;
874 union unix_sockaddr unix_addr;
875 struct WS_sockaddr *win_addr;
876 unsigned int remote_len;
877 socklen_t unix_len;
878 int fd, size = 0;
879 char *out_data;
880 int win_len;
881
882 if (!(out_data = mem_alloc( out_size )))
883 {
884 async_terminate( async, get_error() );
885 return;
886 }
887
888 fd = get_unix_fd( req->acceptsock->fd );
889
890 if (req->recv_len && (size = recv( fd, out_data, req->recv_len, 0 )) < 0)
891 {
892 if (!req->accepted && errno == EWOULDBLOCK)
893 {
894 req->accepted = 1;
895 sock_reselect( req->acceptsock );
896 return;
897 }
898
899 async_terminate( async, sock_get_ntstatus( errno ) );
900 free( out_data );
901 return;
902 }
903
904 if (req->local_len)
905 {
906 if (req->local_len < sizeof(int))
907 {
908 async_terminate( async, STATUS_BUFFER_TOO_SMALL );
909 free( out_data );
910 return;
911 }
912
913 unix_len = sizeof(unix_addr);
914 win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + sizeof(int));
915 if (getsockname( fd, &unix_addr.addr, &unix_len ) < 0 ||
916 (win_len = sockaddr_from_unix( &unix_addr, win_addr, req->local_len - sizeof(int) )) < 0)
917 {
918 async_terminate( async, sock_get_ntstatus( errno ) );
919 free( out_data );
920 return;
921 }
922 memcpy( out_data + req->recv_len, &win_len, sizeof(int) );
923 }
924
925 unix_len = sizeof(unix_addr);
926 win_addr = (struct WS_sockaddr *)(out_data + req->recv_len + req->local_len + sizeof(int));
927 remote_len = out_size - req->recv_len - req->local_len;
928 if (getpeername( fd, &unix_addr.addr, &unix_len ) < 0 ||
929 (win_len = sockaddr_from_unix( &unix_addr, win_addr, remote_len - sizeof(int) )) < 0)
930 {
931 async_terminate( async, sock_get_ntstatus( errno ) );
932 free( out_data );
933 return;
934 }
935 memcpy( out_data + req->recv_len + req->local_len, &win_len, sizeof(int) );
936
937 async_request_complete( req->async, STATUS_SUCCESS, size, out_size, out_data );
938 }
939
940 static void complete_async_accept( struct sock *sock, struct accept_req *req )
941 {
942 struct sock *acceptsock = req->acceptsock;
943 struct async *async = req->async;
944
945 if (debug_level) fprintf( stderr, "completing accept request for socket %p\n", sock );
946
947 if (acceptsock)
948 {
949 if (!accept_into_socket( sock, acceptsock ))
950 {
951 async_terminate( async, get_error() );
952 return;
953 }
954 fill_accept_output( req );
955 }
956 else
957 {
958 obj_handle_t handle;
959
960 if (!(acceptsock = accept_socket( sock )))
961 {
962 async_terminate( async, get_error() );
963 return;
964 }
965 handle = alloc_handle_no_access_check( async_get_thread( async )->process, &acceptsock->obj,
966 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
967 acceptsock->wparam = handle;
968 sock_reselect( acceptsock );
969 release_object( acceptsock );
970 if (!handle)
971 {
972 async_terminate( async, get_error() );
973 return;
974 }
975
976 async_request_complete_alloc( req->async, STATUS_SUCCESS, 0, sizeof(handle), &handle );
977 }
978 }
979
980 static void complete_async_accept_recv( struct accept_req *req )
981 {
982 if (debug_level) fprintf( stderr, "completing accept recv request for socket %p\n", req->acceptsock );
983
984 assert( req->recv_len );
985
986 fill_accept_output( req );
987 }
988
989 static void free_connect_req( void *private )
990 {
991 struct connect_req *req = private;
992
993 req->sock->connect_req = NULL;
994 release_object( req->async );
995 release_object( req->iosb );
996 release_object( req->sock );
997 free( req );
998 }
999
1000 static void complete_async_connect( struct sock *sock )
1001 {
1002 struct connect_req *req = sock->connect_req;
1003 const char *in_buffer;
1004 size_t len;
1005 int ret;
1006
1007 if (debug_level) fprintf( stderr, "completing connect request for socket %p\n", sock );
1008
1009 if (!req->send_len)
1010 {
1011 async_terminate( req->async, STATUS_SUCCESS );
1012 return;
1013 }
1014
1015 in_buffer = (const char *)req->iosb->in_data + sizeof(struct afd_connect_params) + req->addr_len;
1016 len = req->send_len - req->send_cursor;
1017
1018 ret = send( get_unix_fd( sock->fd ), in_buffer + req->send_cursor, len, 0 );
1019 if (ret < 0 && errno != EWOULDBLOCK)
1020 async_terminate( req->async, sock_get_ntstatus( errno ) );
1021 else if (ret == len)
1022 async_request_complete( req->async, STATUS_SUCCESS, req->send_len, 0, NULL );
1023 else
1024 req->send_cursor += ret;
1025 }
1026
1027 static void free_poll_req( void *private )
1028 {
1029 struct poll_req *req = private;
1030 unsigned int i;
1031
1032 if (req->timeout) remove_timeout_user( req->timeout );
1033
1034 for (i = 0; i < req->count; ++i)
1035 release_object( req->sockets[i].sock );
1036 release_object( req->async );
1037 release_object( req->iosb );
1038 list_remove( &req->entry );
1039 free( req );
1040 }
1041
1042 static int is_oobinline( struct sock *sock )
1043 {
1044 int oobinline;
1045 socklen_t len = sizeof(oobinline);
1046 return !getsockopt( get_unix_fd( sock->fd ), SOL_SOCKET, SO_OOBINLINE, (char *)&oobinline, &len ) && oobinline;
1047 }
1048
1049 static int get_poll_flags( struct sock *sock, int event )
1050 {
1051 int flags = 0;
1052
1053 /* A connection-mode socket which has never been connected does not return
1054 * write or hangup events, but Linux reports POLLOUT | POLLHUP. */
1055 if (sock->state == SOCK_UNCONNECTED)
1056 event &= ~(POLLOUT | POLLHUP);
1057
1058 if (event & POLLIN)
1059 {
1060 if (sock->state == SOCK_LISTENING)
1061 flags |= AFD_POLL_ACCEPT;
1062 else
1063 flags |= AFD_POLL_READ;
1064 }
1065 if (event & POLLPRI)
1066 flags |= is_oobinline( sock ) ? AFD_POLL_READ : AFD_POLL_OOB;
1067 if (event & POLLOUT)
1068 flags |= AFD_POLL_WRITE;
1069 if (sock->state == SOCK_CONNECTED)
1070 flags |= AFD_POLL_CONNECT;
1071 if (event & POLLHUP)
1072 flags |= AFD_POLL_HUP;
1073 if (event & POLLERR)
1074 flags |= AFD_POLL_CONNECT_ERR;
1075 if (sock->reset)
1076 flags |= AFD_POLL_RESET;
1077
1078 return flags;
1079 }
1080
1081 static void complete_async_poll( struct poll_req *req, unsigned int status )
1082 {
1083 unsigned int i, signaled_count = 0;
1084
1085 for (i = 0; i < req->count; ++i)
1086 {
1087 struct sock *sock = req->sockets[i].sock;
1088
1089 if (sock->main_poll == req)
1090 sock->main_poll = NULL;
1091 }
1092
1093 if (!status)
1094 {
1095 for (i = 0; i < req->count; ++i)
1096 {
1097 if (req->sockets[i].flags)
1098 ++signaled_count;
1099 }
1100 }
1101
1102 if (is_machine_64bit( async_get_thread( req->async )->process->machine ))
1103 {
1104 size_t output_size = offsetof( struct afd_poll_params_64, sockets[signaled_count] );
1105 struct afd_poll_params_64 *output;
1106
1107 if (!(output = mem_alloc( output_size )))
1108 {
1109 async_terminate( req->async, get_error() );
1110 return;
1111 }
1112 memset( output, 0, output_size );
1113 output->timeout = req->orig_timeout;
1114 output->exclusive = req->exclusive;
1115 for (i = 0; i < req->count; ++i)
1116 {
1117 if (!req->sockets[i].flags) continue;
1118 output->sockets[output->count].socket = req->sockets[i].handle;
1119 output->sockets[output->count].flags = req->sockets[i].flags;
1120 output->sockets[output->count].status = req->sockets[i].status;
1121 ++output->count;
1122 }
1123 assert( output->count == signaled_count );
1124
1125 async_request_complete( req->async, status, output_size, output_size, output );
1126 }
1127 else
1128 {
1129 size_t output_size = offsetof( struct afd_poll_params_32, sockets[signaled_count] );
1130 struct afd_poll_params_32 *output;
1131
1132 if (!(output = mem_alloc( output_size )))
1133 {
1134 async_terminate( req->async, get_error() );
1135 return;
1136 }
1137 memset( output, 0, output_size );
1138 output->timeout = req->orig_timeout;
1139 output->exclusive = req->exclusive;
1140 for (i = 0; i < req->count; ++i)
1141 {
1142 if (!req->sockets[i].flags) continue;
1143 output->sockets[output->count].socket = req->sockets[i].handle;
1144 output->sockets[output->count].flags = req->sockets[i].flags;
1145 output->sockets[output->count].status = req->sockets[i].status;
1146 ++output->count;
1147 }
1148 assert( output->count == signaled_count );
1149
1150 async_request_complete( req->async, status, output_size, output_size, output );
1151 }
1152 }
1153
1154 static void complete_async_polls( struct sock *sock, int event, int error )
1155 {
1156 int flags = get_poll_flags( sock, event );
1157 struct poll_req *req, *next;
1158
1159 LIST_FOR_EACH_ENTRY_SAFE( req, next, &poll_list, struct poll_req, entry )
1160 {
1161 unsigned int i;
1162
1163 if (req->iosb->status != STATUS_PENDING) continue;
1164
1165 for (i = 0; i < req->count; ++i)
1166 {
1167 if (req->sockets[i].sock != sock) continue;
1168 if (!(req->sockets[i].mask & flags)) continue;
1169
1170 if (debug_level)
1171 fprintf( stderr, "completing poll for socket %p, wanted %#x got %#x\n",
1172 sock, req->sockets[i].mask, flags );
1173
1174 req->sockets[i].flags = req->sockets[i].mask & flags;
1175 req->sockets[i].status = sock_get_ntstatus( error );
1176
1177 if (req->pending)
1178 {
1179 complete_async_poll( req, STATUS_SUCCESS );
1180 break;
1181 }
1182 }
1183 }
1184 }
1185
1186 static void async_poll_timeout( void *private )
1187 {
1188 struct poll_req *req = private;
1189
1190 req->timeout = NULL;
1191
1192 if (req->iosb->status != STATUS_PENDING) return;
1193
1194 complete_async_poll( req, STATUS_TIMEOUT );
1195 }
1196
1197 static int sock_dispatch_asyncs( struct sock *sock, int event, int error )
1198 {
1199 if (event & (POLLIN | POLLPRI))
1200 {
1201 struct accept_req *req;
1202
1203 LIST_FOR_EACH_ENTRY( req, &sock->accept_list, struct accept_req, entry )
1204 {
1205 if (req->iosb->status == STATUS_PENDING && !req->accepted)
1206 {
1207 complete_async_accept( sock, req );
1208 event &= ~POLLIN;
1209 break;
1210 }
1211 }
1212
1213 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1214 complete_async_accept_recv( sock->accept_recv_req );
1215 }
1216
1217 if ((event & POLLOUT) && sock->connect_req && sock->connect_req->iosb->status == STATUS_PENDING)
1218 complete_async_connect( sock );
1219
1220 if ((event & (POLLIN | POLLPRI)) && async_queued( &sock->read_q ))
1221 {
1222 if (async_waiting( &sock->read_q ))
1223 {
1224 if (debug_level) fprintf( stderr, "activating read queue for socket %p\n", sock );
1225 async_wake_up( &sock->read_q, STATUS_ALERTED );
1226 }
1227 event &= ~(POLLIN | POLLPRI);
1228 }
1229
1230 if ((event & POLLOUT) && async_queued( &sock->write_q ))
1231 {
1232 if (async_waiting( &sock->write_q ))
1233 {
1234 if (debug_level) fprintf( stderr, "activating write queue for socket %p\n", sock );
1235 async_wake_up( &sock->write_q, STATUS_ALERTED );
1236 }
1237 event &= ~POLLOUT;
1238 }
1239
1240 if (event & (POLLERR | POLLHUP))
1241 {
1242 int status = sock_get_ntstatus( error );
1243 struct accept_req *req, *next;
1244
1245 async_wake_up( &sock->read_q, status );
1246 async_wake_up( &sock->write_q, status );
1247
1248 LIST_FOR_EACH_ENTRY_SAFE( req, next, &sock->accept_list, struct accept_req, entry )
1249 {
1250 if (req->iosb->status == STATUS_PENDING)
1251 async_terminate( req->async, status );
1252 }
1253
1254 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1255 async_terminate( sock->accept_recv_req->async, status );
1256
1257 if (sock->connect_req)
1258 async_terminate( sock->connect_req->async, status );
1259 }
1260
1261 if (sock->reset)
1262 {
1263 async_wake_up( &sock->read_q, STATUS_CONNECTION_RESET );
1264 async_wake_up( &sock->write_q, STATUS_CONNECTION_RESET );
1265
1266 if (sock->accept_recv_req && sock->accept_recv_req->iosb->status == STATUS_PENDING)
1267 async_terminate( sock->accept_recv_req->async, STATUS_CONNECTION_RESET );
1268 }
1269
1270 return event;
1271 }
1272
1273 static void post_socket_event( struct sock *sock, enum afd_poll_bit event_bit )
1274 {
1275 unsigned int event = (1 << event_bit);
1276
1277 if (!(sock->reported_events & event))
1278 {
1279 sock->pending_events |= event;
1280 sock->reported_events |= event;
1281
1282 if ((sock->mask & event) && sock->event)
1283 set_event( sock->event );
1284 }
1285 }
1286
1287 static void sock_dispatch_events( struct sock *sock, enum connection_state prevstate, int event )
1288 {
1289 switch (prevstate)
1290 {
1291 case SOCK_UNCONNECTED:
1292 break;
1293
1294 case SOCK_CONNECTING:
1295 if (event & POLLOUT)
1296 {
1297 post_socket_event( sock, AFD_POLL_BIT_CONNECT );
1298 post_socket_event( sock, AFD_POLL_BIT_WRITE );
1299 }
1300 if (event & (POLLERR | POLLHUP))
1301 post_socket_event( sock, AFD_POLL_BIT_CONNECT_ERR );
1302 break;
1303
1304 case SOCK_LISTENING:
1305 if (event & (POLLIN | POLLERR | POLLHUP))
1306 post_socket_event( sock, AFD_POLL_BIT_ACCEPT );
1307 break;
1308
1309 case SOCK_CONNECTED:
1310 case SOCK_CONNECTIONLESS:
1311 if (sock->reset)
1312 post_socket_event( sock, AFD_POLL_BIT_RESET );
1313
1314 if (event & POLLIN)
1315 post_socket_event( sock, AFD_POLL_BIT_READ );
1316
1317 if (event & POLLOUT)
1318 post_socket_event( sock, AFD_POLL_BIT_WRITE );
1319
1320 if (event & POLLPRI)
1321 post_socket_event( sock, AFD_POLL_BIT_OOB );
1322
1323 if (event & (POLLERR | POLLHUP))
1324 post_socket_event( sock, AFD_POLL_BIT_HUP );
1325 break;
1326 }
1327
1328 post_sock_messages( sock );
1329 }
1330
1331 static void sock_poll_event( struct fd *fd, int event )
1332 {
1333 struct sock *sock = get_fd_user( fd );
1334 int hangup_seen = 0;
1335 enum connection_state prevstate = sock->state;
1336 int error = 0;
1337
1338 assert( sock->obj.ops == &sock_ops );
1339 grab_object( sock );
1340
1341 if (debug_level)
1342 fprintf(stderr, "socket %p select event: %x\n", sock, event);
1343
1344 if (event & (POLLERR | POLLHUP))
1345 error = sock_error( sock );
1346
1347 switch (sock->state)
1348 {
1349 case SOCK_UNCONNECTED:
1350 break;
1351
1352 case SOCK_CONNECTING:
1353 if (event & (POLLERR|POLLHUP))
1354 {
1355 sock->state = SOCK_UNCONNECTED;
1356 event &= ~POLLOUT;
1357 }
1358 else if (event & POLLOUT)
1359 {
1360 sock->state = SOCK_CONNECTED;
1361 sock->connect_time = current_time;
1362 sock->errors[AFD_POLL_BIT_CONNECT_ERR] = 0;
1363 }
1364 break;
1365
1366 case SOCK_LISTENING:
1367 break;
1368
1369 case SOCK_CONNECTED:
1370 case SOCK_CONNECTIONLESS:
1371 if (sock->reset)
1372 event &= ~(POLLIN | POLLERR | POLLHUP);
1373
1374 if (sock->type == WS_SOCK_STREAM && (event & POLLIN))
1375 {
1376 char dummy;
1377 int nr;
1378
1379 /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
1380 * has been closed, so we need to check for it explicitly here */
1381 nr = recv( get_unix_fd( fd ), &dummy, 1, MSG_PEEK );
1382 if ( nr == 0 )
1383 {
1384 hangup_seen = 1;
1385 event &= ~POLLIN;
1386 }
1387 else if ( nr < 0 )
1388 {
1389 event &= ~POLLIN;
1390 /* EAGAIN can happen if an async recv() falls between the server's poll()
1391 call and the invocation of this routine */
1392 if (errno == ECONNRESET || errno == EPIPE)
1393 {
1394 sock->reset = 1;
1395 }
1396 else if (errno != EAGAIN)
1397 {
1398 error = errno;
1399 event |= POLLERR;
1400 sock->errors[AFD_POLL_BIT_HUP] = error;
1401 if ( debug_level )
1402 fprintf( stderr, "recv error on socket %p: %d\n", sock, errno );
1403 }
1404 }
1405 }
1406
1407 if (hangup_seen || (sock_shutdown_type == SOCK_SHUTDOWN_POLLHUP && (event & POLLHUP)))
1408 {
1409 sock->hangup = 1;
1410 }
1411 else if (event & (POLLHUP | POLLERR))
1412 {
1413 sock->aborted = 1;
1414
1415 if (debug_level)
1416 fprintf( stderr, "socket %p aborted by error %d, event %#x\n", sock, error, event );
1417 }
1418
1419 if (hangup_seen)
1420 event |= POLLHUP;
1421 break;
1422 }
1423
1424 event = sock_dispatch_asyncs( sock, event, error );
1425 sock_dispatch_events( sock, prevstate, event );
1426 complete_async_polls( sock, event, error );
1427
1428 sock_reselect( sock );
1429 release_object( sock );
1430 }
1431
1432 static void sock_dump( struct object *obj, int verbose )
1433 {
1434 struct sock *sock = (struct sock *)obj;
1435 assert( obj->ops == &sock_ops );
1436 fprintf( stderr, "Socket fd=%p, state=%x, mask=%x, pending=%x, reported=%x\n",
1437 sock->fd, sock->state,
1438 sock->mask, sock->pending_events, sock->reported_events );
1439 }
1440
1441 static int poll_flags_from_afd( struct sock *sock, int flags )
1442 {
1443 int ev = 0;
1444
1445 /* A connection-mode socket which has never been connected does
1446 * not return write or hangup events, but Linux returns
1447 * POLLOUT | POLLHUP. */
1448 if (sock->state == SOCK_UNCONNECTED)
1449 return -1;
1450
1451 if (flags & (AFD_POLL_READ | AFD_POLL_ACCEPT))
1452 ev |= POLLIN;
1453 if ((flags & AFD_POLL_HUP) && sock->type == WS_SOCK_STREAM)
1454 ev |= POLLIN;
1455 if (flags & AFD_POLL_OOB)
1456 ev |= is_oobinline( sock ) ? POLLIN : POLLPRI;
1457 if (flags & AFD_POLL_WRITE)
1458 ev |= POLLOUT;
1459
1460 return ev;
1461 }
1462
1463 static int sock_get_poll_events( struct fd *fd )
1464 {
1465 struct sock *sock = get_fd_user( fd );
1466 unsigned int mask = sock->mask & ~sock->reported_events;
1467 struct poll_req *req;
1468 int ev = 0;
1469
1470 assert( sock->obj.ops == &sock_ops );
1471
1472 if (!sock->type) /* not initialized yet */
1473 return -1;
1474
1475 LIST_FOR_EACH_ENTRY( req, &poll_list, struct poll_req, entry )
1476 {
1477 unsigned int i;
1478
1479 if (req->iosb->status != STATUS_PENDING) continue;
1480
1481 for (i = 0; i < req->count; ++i)
1482 {
1483 if (req->sockets[i].sock != sock) continue;
1484
1485 ev |= poll_flags_from_afd( sock, req->sockets[i].mask );
1486 }
1487 }
1488
1489 switch (sock->state)
1490 {
1491 case SOCK_UNCONNECTED:
1492 /* A connection-mode Windows socket which has never been connected does
1493 * not return any events, but Linux returns POLLOUT | POLLHUP. Hence we
1494 * need to return -1 here, to prevent the socket from being polled on at
1495 * all. */
1496 return -1;
1497
1498 case SOCK_CONNECTING:
1499 return POLLOUT;
1500
1501 case SOCK_LISTENING:
1502 if (!list_empty( &sock->accept_list ) || (mask & AFD_POLL_ACCEPT))
1503 ev |= POLLIN;
1504 break;
1505
1506 case SOCK_CONNECTED:
1507 case SOCK_CONNECTIONLESS:
1508 if (sock->hangup && sock->wr_shutdown && !sock->wr_shutdown_pending)
1509 {
1510 /* Linux returns POLLHUP if a socket is both SHUT_RD and SHUT_WR, or
1511 * if both the socket and its peer are SHUT_WR.
1512 *
1513 * We don't use SHUT_RD, so we can only encounter this in the latter
1514 * case. In that case there can't be any pending read requests (they
1515 * would have already been completed with a length of zero), the
1516 * above condition ensures that we don't have any pending write
1517 * requests, and nothing that can change about the socket state that
1518 * would complete a pending poll request. */
1519 return -1;
1520 }
1521
1522 if (sock->aborted || sock->reset)
1523 return -1;
1524
1525 if (sock->accept_recv_req)
1526 {
1527 ev |= POLLIN;
1528 }
1529 else if (async_queued( &sock->read_q ))
1530 {
1531 /* Clear POLLIN and POLLPRI if we have an alerted async, even if
1532 * we're polling this socket for READ or OOB. We can't signal the
1533 * poll if the pending async will read all of the data [cf. the
1534 * matching logic in sock_dispatch_asyncs()], but we also don't
1535 * want to spin polling for POLLIN if we're not going to use it. */
1536 if (async_waiting( &sock->read_q ))
1537 ev |= POLLIN | POLLPRI;
1538 else
1539 ev &= ~(POLLIN | POLLPRI);
1540 }
1541 else
1542 {
1543 /* Don't ask for POLLIN if we got a hangup. We won't receive more
1544 * data anyway, but we will get POLLIN if SOCK_SHUTDOWN_EOF. */
1545 if (!sock->hangup)
1546 {
1547 if (mask & AFD_POLL_READ)
1548 ev |= POLLIN;
1549 if (mask & AFD_POLL_OOB)
1550 ev |= POLLPRI;
1551 }
1552
1553 /* We use POLLIN with 0 bytes recv() as hangup indication for stream sockets. */
1554 if (sock->state == SOCK_CONNECTED && (mask & AFD_POLL_HUP) && !(sock->reported_events & AFD_POLL_READ))
1555 ev |= POLLIN;
1556 }
1557
1558 if (async_queued( &sock->write_q ))
1559 {
1560 /* As with read asyncs above, clear POLLOUT if we have an alerted
1561 * async. */
1562 if (async_waiting( &sock->write_q ))
1563 ev |= POLLOUT;
1564 else
1565 ev &= ~POLLOUT;
1566 }
1567 else if (!sock->wr_shutdown && (mask & AFD_POLL_WRITE))
1568 {
1569 ev |= POLLOUT;
1570 }
1571
1572 break;
1573 }
1574
1575 return ev;
1576 }
1577
1578 static enum server_fd_type sock_get_fd_type( struct fd *fd )
1579 {
1580 return FD_TYPE_SOCKET;
1581 }
1582
1583 static void sock_cancel_async( struct fd *fd, struct async *async )
1584 {
1585 struct poll_req *req;
1586
1587 LIST_FOR_EACH_ENTRY( req, &poll_list, struct poll_req, entry )
1588 {
1589 unsigned int i;
1590
1591 if (req->async != async)
1592 continue;
1593
1594 for (i = 0; i < req->count; i++)
1595 {
1596 struct sock *sock = req->sockets[i].sock;
1597
1598 if (sock->main_poll == req)
1599 sock->main_poll = NULL;
1600 }
1601 }
1602
1603 async_terminate( async, STATUS_CANCELLED );
1604 }
1605
1606 static void sock_reselect_async( struct fd *fd, struct async_queue *queue )
1607 {
1608 struct sock *sock = get_fd_user( fd );
1609
1610 if (sock->wr_shutdown_pending && list_empty( &sock->write_q.queue ))
1611 {
1612 shutdown( get_unix_fd( sock->fd ), SHUT_WR );
1613 sock->wr_shutdown_pending = 0;
1614 }
1615
1616 /* Don't reselect the ifchange queue; we always ask for POLLIN.
1617 * Don't reselect an uninitialized socket; we can't call set_fd_events() on
1618 * a pseudo-fd. */
1619 if (queue != &sock->ifchange_q && sock->type)
1620 sock_reselect( sock );
1621 }
1622
1623 static struct fd *sock_get_fd( struct object *obj )
1624 {
1625 struct sock *sock = (struct sock *)obj;
1626 return (struct fd *)grab_object( sock->fd );
1627 }
1628
1629 static int sock_close_handle( struct object *obj, struct process *process, obj_handle_t handle )
1630 {
1631 struct sock *sock = (struct sock *)obj;
1632
1633 if (sock->obj.handle_count == 1) /* last handle */
1634 {
1635 struct accept_req *accept_req, *accept_next;
1636 struct poll_req *poll_req, *poll_next;
1637
1638 if (sock->accept_recv_req)
1639 async_terminate( sock->accept_recv_req->async, STATUS_CANCELLED );
1640
1641 LIST_FOR_EACH_ENTRY_SAFE( accept_req, accept_next, &sock->accept_list, struct accept_req, entry )
1642 async_terminate( accept_req->async, STATUS_CANCELLED );
1643
1644 if (sock->connect_req)
1645 async_terminate( sock->connect_req->async, STATUS_CANCELLED );
1646
1647 LIST_FOR_EACH_ENTRY_SAFE( poll_req, poll_next, &poll_list, struct poll_req, entry )
1648 {
1649 struct iosb *iosb = poll_req->iosb;
1650 BOOL signaled = FALSE;
1651 unsigned int i;
1652
1653 if (iosb->status != STATUS_PENDING) continue;
1654
1655 for (i = 0; i < poll_req->count; ++i)
1656 {
1657 if (poll_req->sockets[i].sock == sock)
1658 {
1659 signaled = TRUE;
1660 poll_req->sockets[i].flags = AFD_POLL_CLOSE;
1661 poll_req->sockets[i].status = 0;
1662 }
1663 }
1664
1665 if (signaled) complete_async_poll( poll_req, STATUS_SUCCESS );
1666 }
1667 }
1668 return async_close_obj_handle( obj, process, handle );
1669 }
1670
1671 static void sock_destroy( struct object *obj )
1672 {
1673 struct sock *sock = (struct sock *)obj;
1674 unsigned int i;
1675
1676 assert( obj->ops == &sock_ops );
1677
1678 /* FIXME: special socket shutdown stuff? */
1679
1680 for (i = 0; i < 2; ++i)
1681 {
1682 if (sock->bound_addr[i] && --sock->bound_addr[i]->reuse_count <= 0)
1683 {
1684 rb_remove( &bound_addresses_tree, &sock->bound_addr[i]->entry );
1685 free( sock->bound_addr[i] );
1686 }
1687 }
1688
1689 if ( sock->deferred )
1690 release_object( sock->deferred );
1691
1692 async_wake_up( &sock->ifchange_q, STATUS_CANCELLED );
1693 sock_release_ifchange( sock );
1694 free_async_queue( &sock->read_q );
1695 free_async_queue( &sock->write_q );
1696 free_async_queue( &sock->ifchange_q );
1697 free_async_queue( &sock->accept_q );
1698 free_async_queue( &sock->connect_q );
1699 free_async_queue( &sock->poll_q );
1700 if (sock->event) release_object( sock->event );
1701 if (sock->fd) release_object( sock->fd );
1702 }
1703
1704 static struct sock *create_socket(void)
1705 {
1706 struct sock *sock;
1707
1708 if (!(sock = alloc_object( &sock_ops ))) return NULL;
1709 sock->fd = NULL;
1710 sock->state = SOCK_UNCONNECTED;
1711 sock->mask = 0;
1712 sock->pending_events = 0;
1713 sock->reported_events = 0;
1714 sock->proto = 0;
1715 sock->type = 0;
1716 sock->family = 0;
1717 sock->event = NULL;
1718 sock->window = 0;
1719 sock->message = 0;
1720 sock->wparam = 0;
1721 sock->connect_time = 0;
1722 sock->deferred = NULL;
1723 sock->ifchange_obj = NULL;
1724 sock->accept_recv_req = NULL;
1725 sock->connect_req = NULL;
1726 sock->main_poll = NULL;
1727 memset( &sock->addr, 0, sizeof(sock->addr) );
1728 sock->addr_len = 0;
1729 memset( &sock->peer_addr, 0, sizeof(sock->peer_addr) );
1730 sock->peer_addr_len = 0;
1731 sock->rd_shutdown = 0;
1732 sock->wr_shutdown = 0;
1733 sock->wr_shutdown_pending = 0;
1734 sock->hangup = 0;
1735 sock->aborted = 0;
1736 sock->nonblocking = 0;
1737 sock->bound = 0;
1738 sock->reset = 0;
1739 sock->reuseaddr = 0;
1740 sock->exclusiveaddruse = 0;
1741 sock->rcvbuf = 0;
1742 sock->sndbuf = 0;
1743 sock->rcvtimeo = 0;
1744 sock->sndtimeo = 0;
1745 sock->icmp_fixup_data_len = 0;
1746 sock->bound_addr[0] = sock->bound_addr[1] = NULL;
1747 init_async_queue( &sock->read_q );
1748 init_async_queue( &sock->write_q );
1749 init_async_queue( &sock->ifchange_q );
1750 init_async_queue( &sock->accept_q );
1751 init_async_queue( &sock->connect_q );
1752 init_async_queue( &sock->poll_q );
1753 memset( sock->errors, 0, sizeof(sock->errors) );
1754 list_init( &sock->accept_list );
1755 return sock;
1756 }
1757
1758 static int get_unix_family( int family )
1759 {
1760 switch (family)
1761 {
1762 case WS_AF_INET: return AF_INET;
1763 case WS_AF_INET6: return AF_INET6;
1764 #ifdef HAS_IPX
1765 case WS_AF_IPX: return AF_IPX;
1766 #endif
1767 #ifdef AF_IRDA
1768 case WS_AF_IRDA: return AF_IRDA;
1769 #endif
1770 case WS_AF_UNSPEC: return AF_UNSPEC;
1771 default: return -1;
1772 }
1773 }
1774
1775 static int get_unix_type( int type )
1776 {
1777 switch (type)
1778 {
1779 case WS_SOCK_DGRAM: return SOCK_DGRAM;
1780 case WS_SOCK_RAW: return SOCK_RAW;
1781 case WS_SOCK_STREAM: return SOCK_STREAM;
1782 default: return -1;
1783 }
1784 }
1785
1786 static int get_unix_protocol( int protocol )
1787 {
1788 if (protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
1789 return protocol;
1790
1791 switch (protocol)
1792 {
1793 case WS_IPPROTO_ICMP: return IPPROTO_ICMP;
1794 case WS_IPPROTO_IGMP: return IPPROTO_IGMP;
1795 case WS_IPPROTO_IP: return IPPROTO_IP;
1796 case WS_IPPROTO_IPV4: return IPPROTO_IPIP;
1797 case WS_IPPROTO_IPV6: return IPPROTO_IPV6;
1798 case WS_IPPROTO_RAW: return IPPROTO_RAW;
1799 case WS_IPPROTO_TCP: return IPPROTO_TCP;
1800 case WS_IPPROTO_UDP: return IPPROTO_UDP;
1801 default: return -1;
1802 }
1803 }
1804
1805 static void set_dont_fragment( int fd, int level, int value )
1806 {
1807 int optname;
1808
1809 if (level == IPPROTO_IP)
1810 {
1811 #ifdef IP_DONTFRAG
1812 optname = IP_DONTFRAG;
1813 #elif defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO) && defined(IP_PMTUDISC_DONT)
1814 optname = IP_MTU_DISCOVER;
1815 value = value ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
1816 #else
1817 return;
1818 #endif
1819 }
1820 else
1821 {
1822 #ifdef IPV6_DONTFRAG
1823 optname = IPV6_DONTFRAG;
1824 #elif defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO) && defined(IPV6_PMTUDISC_DONT)
1825 optname = IPV6_MTU_DISCOVER;
1826 value = value ? IPV6_PMTUDISC_DO : IPV6_PMTUDISC_DONT;
1827 #else
1828 return;
1829 #endif
1830 }
1831
1832 setsockopt( fd, level, optname, &value, sizeof(value) );
1833 }
1834
1835 static int init_socket( struct sock *sock, int family, int type, int protocol )
1836 {
1837 unsigned int options = 0;
1838 int sockfd, unix_type, unix_family, unix_protocol, value;
1839 socklen_t len;
1840
1841 unix_family = get_unix_family( family );
1842 unix_type = get_unix_type( type );
1843 unix_protocol = get_unix_protocol( protocol );
1844
1845 if (unix_protocol < 0)
1846 {
1847 if (type && unix_type < 0)
1848 set_win32_error( WSAESOCKTNOSUPPORT );
1849 else
1850 set_win32_error( WSAEPROTONOSUPPORT );
1851 return -1;
1852 }
1853 if (unix_family < 0)
1854 {
1855 if (family >= 0 && unix_type < 0)
1856 set_win32_error( WSAESOCKTNOSUPPORT );
1857 else
1858 set_win32_error( WSAEAFNOSUPPORT );
1859 return -1;
1860 }
1861
1862 sockfd = socket( unix_family, unix_type, unix_protocol );
1863
1864 #ifdef linux
1865 if (sockfd == -1 && errno == EPERM && unix_family == AF_INET
1866 && unix_type == SOCK_RAW && unix_protocol == IPPROTO_ICMP)
1867 {
1868 sockfd = socket( unix_family, SOCK_DGRAM, unix_protocol );
1869 if (sockfd != -1)
1870 {
1871 const int val = 1;
1872
1873 setsockopt( sockfd, IPPROTO_IP, IP_RECVTTL, (const char *)&val, sizeof(val) );
1874 setsockopt( sockfd, IPPROTO_IP, IP_RECVTOS, (const char *)&val, sizeof(val) );
1875 setsockopt( sockfd, IPPROTO_IP, IP_PKTINFO, (const char *)&val, sizeof(val) );
1876 }
1877 }
1878 #endif
1879
1880 if (sockfd == -1)
1881 {
1882 if (errno == EINVAL) set_win32_error( WSAESOCKTNOSUPPORT );
1883 else set_win32_error( sock_get_error( errno ));
1884 return -1;
1885 }
1886 fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
1887
1888 if (family == WS_AF_IPX && protocol >= WS_NSPROTO_IPX && protocol <= WS_NSPROTO_IPX + 255)
1889 {
1890 #ifdef HAS_IPX
1891 int ipx_type = protocol - WS_NSPROTO_IPX;
1892
1893 #ifdef SOL_IPX
1894 setsockopt( sockfd, SOL_IPX, IPX_TYPE, &ipx_type, sizeof(ipx_type) );
1895 #else
1896 struct ipx val;
1897 /* Should we retrieve val using a getsockopt call and then
1898 * set the modified one? */
1899 val.ipx_pt = ipx_type;
1900 setsockopt( sockfd, 0, SO_DEFAULT_HEADERS, &val, sizeof(val) );
1901 #endif
1902 #endif
1903 }
1904
1905 if (unix_family == AF_INET || unix_family == AF_INET6)
1906 {
1907 /* ensure IP_DONTFRAGMENT is disabled for SOCK_DGRAM and SOCK_RAW, enabled for SOCK_STREAM */
1908 if (unix_type == SOCK_DGRAM || unix_type == SOCK_RAW) /* in Linux the global default can be enabled */
1909 set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, FALSE );
1910 else if (unix_type == SOCK_STREAM)
1911 set_dont_fragment( sockfd, unix_family == AF_INET6 ? IPPROTO_IPV6 : IPPROTO_IP, TRUE );
1912 }
1913
1914 #ifdef IPV6_V6ONLY
1915 if (unix_family == AF_INET6)
1916 {
1917 static const int enable = 1;
1918 setsockopt( sockfd, IPPROTO_IPV6, IPV6_V6ONLY, &enable, sizeof(enable) );
1919 }
1920 #endif
1921
1922 len = sizeof(value);
1923 if (!getsockopt( sockfd, SOL_SOCKET, SO_RCVBUF, &value, &len ))
1924 {
1925 if (value < MIN_RCVBUF)
1926 {
1927 value = MIN_RCVBUF;
1928 setsockopt( sockfd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value) );
1929 }
1930 sock->rcvbuf = value;
1931 }
1932
1933 len = sizeof(value);
1934 if (!getsockopt( sockfd, SOL_SOCKET, SO_SNDBUF, &value, &len ))
1935 sock->sndbuf = value;
1936
1937 sock->state = (type == WS_SOCK_STREAM ? SOCK_UNCONNECTED : SOCK_CONNECTIONLESS);
1938 sock->proto = protocol;
1939 sock->type = type;
1940 sock->family = family;
1941
1942 if (is_tcp_socket( sock ))
1943 {
1944 value = 1;
1945 setsockopt( sockfd, SOL_SOCKET, SO_REUSEADDR, &value, sizeof(value) );
1946 #ifdef TCP_SYNCNT
1947 value = 4;
1948 setsockopt( sockfd, IPPROTO_TCP, TCP_SYNCNT, &value, sizeof(value) );
1949 #endif
1950 }
1951
1952 if (sock->fd)
1953 {
1954 options = get_fd_options( sock->fd );
1955 release_object( sock->fd );
1956 }
1957
1958 if (!(sock->fd = create_anonymous_fd( &sock_fd_ops, sockfd, &sock->obj, options )))
1959 {
1960 return -1;
1961 }
1962
1963 /* We can't immediately allow caching for a connection-mode socket, since it
1964 * might be accepted into (changing the underlying fd object.) */
1965 if (sock->type != WS_SOCK_STREAM) allow_fd_caching( sock->fd );
1966
1967 return 0;
1968 }
1969
1970 /* accepts a socket and inits it */
1971 static int accept_new_fd( struct sock *sock )
1972 {
1973
1974 /* Try to accept(2). We can't be safe that this an already connected socket
1975 * or that accept() is allowed on it. In those cases we will get -1/errno
1976 * return.
1977 */
1978 struct sockaddr saddr;
1979 socklen_t slen = sizeof(saddr);
1980 int acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen );
1981 if (acceptfd != -1)
1982 fcntl( acceptfd, F_SETFL, O_NONBLOCK );
1983 else
1984 set_error( sock_get_ntstatus( errno ));
1985 return acceptfd;
1986 }
1987
1988 /* accept a socket (creates a new fd) */
1989 static struct sock *accept_socket( struct sock *sock )
1990 {
1991 struct sock *acceptsock;
1992 int acceptfd;
1993
1994 if (get_unix_fd( sock->fd ) == -1) return NULL;
1995
1996 if ( sock->deferred )
1997 {
1998 acceptsock = sock->deferred;
1999 sock->deferred = NULL;
2000 }
2001 else
2002 {
2003 union unix_sockaddr unix_addr;
2004 socklen_t unix_len;
2005
2006 if ((acceptfd = accept_new_fd( sock )) == -1) return NULL;
2007 if (!(acceptsock = create_socket()))
2008 {
2009 close( acceptfd );
2010 return NULL;
2011 }
2012
2013 /* newly created socket gets the same properties of the listening socket */
2014 acceptsock->state = SOCK_CONNECTED;
2015 acceptsock->bound = 1;
2016 acceptsock->nonblocking = sock->nonblocking;
2017 acceptsock->mask = sock->mask;
2018 acceptsock->proto = sock->proto;
2019 acceptsock->type = sock->type;
2020 acceptsock->family = sock->family;
2021 acceptsock->window = sock->window;
2022 acceptsock->message = sock->message;
2023 acceptsock->reuseaddr = sock->reuseaddr;
2024 acceptsock->exclusiveaddruse = sock->exclusiveaddruse;
2025 acceptsock->sndbuf = sock->sndbuf;
2026 acceptsock->rcvbuf = sock->rcvbuf;
2027 acceptsock->sndtimeo = sock->sndtimeo;
2028 acceptsock->rcvtimeo = sock->rcvtimeo;
2029 acceptsock->connect_time = current_time;
2030
2031 if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
2032 if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
2033 get_fd_options( sock->fd ) )))
2034 {
2035 release_object( acceptsock );
2036 return NULL;
2037 }
2038 unix_len = sizeof(unix_addr);
2039 if (!getsockname( acceptfd, &unix_addr.addr, &unix_len ))
2040 {
2041 acceptsock->addr_len = sockaddr_from_unix( &unix_addr, &acceptsock->addr.addr, sizeof(acceptsock->addr) );
2042 if (!getpeername( acceptfd, &unix_addr.addr, &unix_len ))
2043 acceptsock->peer_addr_len = sockaddr_from_unix( &unix_addr,
2044 &acceptsock->peer_addr.addr,
2045 sizeof(acceptsock->peer_addr) );
2046 }
2047 }
2048
2049 clear_error();
2050 sock->pending_events &= ~AFD_POLL_ACCEPT;
2051 sock->reported_events &= ~AFD_POLL_ACCEPT;
2052 sock_reselect( sock );
2053 return acceptsock;
2054 }
2055
2056 static int accept_into_socket( struct sock *sock, struct sock *acceptsock )
2057 {
2058 union unix_sockaddr unix_addr;
2059 socklen_t unix_len;
2060 int acceptfd;
2061 struct fd *newfd;
2062
2063 if (get_unix_fd( sock->fd ) == -1) return FALSE;
2064
2065 if ( sock->deferred )
2066 {
2067 newfd = dup_fd_object( sock->deferred->fd, 0, 0,
2068 get_fd_options( acceptsock->fd ) );
2069 if ( !newfd )
2070 return FALSE;
2071
2072 set_fd_user( newfd, &sock_fd_ops, &acceptsock->obj );
2073
2074 release_object( sock->deferred );
2075 sock->deferred = NULL;
2076 }
2077 else
2078 {
2079 if ((acceptfd = accept_new_fd( sock )) == -1)
2080 return FALSE;
2081
2082 if (!(newfd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
2083 get_fd_options( acceptsock->fd ) )))
2084 return FALSE;
2085 }
2086
2087 acceptsock->state = SOCK_CONNECTED;
2088 acceptsock->bound = 1;
2089 acceptsock->pending_events = 0;
2090 acceptsock->reported_events = 0;
2091 acceptsock->proto = sock->proto;
2092 acceptsock->type = sock->type;
2093 acceptsock->family = sock->family;
2094 acceptsock->wparam = 0;
2095 acceptsock->deferred = NULL;
2096 acceptsock->connect_time = current_time;
2097 fd_copy_completion( acceptsock->fd, newfd );
2098 release_object( acceptsock->fd );
2099 acceptsock->fd = newfd;
2100
2101 unix_len = sizeof(unix_addr);
2102 if (!getsockname( get_unix_fd( newfd ), &unix_addr.addr, &unix_len ))
2103 {
2104 acceptsock->addr_len = sockaddr_from_unix( &unix_addr, &acceptsock->addr.addr, sizeof(acceptsock->addr) );
2105 if (!getpeername( get_unix_fd( newfd ), &unix_addr.addr, &unix_len ))
2106 acceptsock->peer_addr_len = sockaddr_from_unix( &unix_addr,
2107 &acceptsock->peer_addr.addr,
2108 sizeof(acceptsock->peer_addr) );
2109 }
2110
2111 clear_error();
2112 sock->pending_events &= ~AFD_POLL_ACCEPT;
2113 sock->reported_events &= ~AFD_POLL_ACCEPT;
2114 sock_reselect( sock );
2115
2116 return TRUE;
2117 }
2118
2119 #ifdef IP_BOUND_IF
2120
2121 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
2122 {
2123 static const int enable = 1;
2124 unsigned int index;
2125
2126 if (!(index = if_nametoindex( name )))
2127 return -1;
2128
2129 if (setsockopt( fd, IPPROTO_IP, IP_BOUND_IF, &index, sizeof(index) ))
2130 return -1;
2131
2132 return setsockopt( fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable) );
2133 }
2134
2135 #elif defined(IP_UNICAST_IF) && defined(SO_ATTACH_FILTER) && defined(SO_BINDTODEVICE)
2136
2137 struct interface_filter
2138 {
2139 struct sock_filter iface_memaddr;
2140 struct sock_filter iface_rule;
2141 struct sock_filter ip_memaddr;
2142 struct sock_filter ip_rule;
2143 struct sock_filter return_keep;
2144 struct sock_filter return_dump;
2145 };
2146 # define FILTER_JUMP_DUMP(here) (u_char)(offsetof(struct interface_filter, return_dump) \
2147 -offsetof(struct interface_filter, here)-sizeof(struct sock_filter)) \
2148 /sizeof(struct sock_filter)
2149 # define FILTER_JUMP_KEEP(here) (u_char)(offsetof(struct interface_filter, return_keep) \
2150 -offsetof(struct interface_filter, here)-sizeof(struct sock_filter)) \
2151 /sizeof(struct sock_filter)
2152 # define FILTER_JUMP_NEXT() (u_char)(0)
2153 # define SKF_NET_DESTIP 16 /* offset in the network header to the destination IP */
2154 static struct interface_filter generic_interface_filter =
2155 {
2156 /* This filter rule allows incoming packets on the specified interface, which works for all
2157 * remotely generated packets and for locally generated broadcast packets. */
2158 BPF_STMT(BPF_LD+BPF_W+BPF_ABS, SKF_AD_OFF+SKF_AD_IFINDEX),
2159 BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0xdeadbeef, FILTER_JUMP_KEEP(iface_rule), FILTER_JUMP_NEXT()),
2160 /* This rule allows locally generated packets targeted at the specific IP address of the chosen
2161 * adapter (local packets not destined for the broadcast address do not have IFINDEX set) */
2162 BPF_STMT(BPF_LD+BPF_W+BPF_ABS, SKF_NET_OFF+SKF_NET_DESTIP),
2163 BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0xdeadbeef, FILTER_JUMP_KEEP(ip_rule), FILTER_JUMP_DUMP(ip_rule)),
2164 BPF_STMT(BPF_RET+BPF_K, (u_int)-1), /* keep packet */
2165 BPF_STMT(BPF_RET+BPF_K, 0) /* dump packet */
2166 };
2167
2168 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
2169 {
2170 struct interface_filter specific_interface_filter;
2171 struct sock_fprog filter_prog;
2172 static const int enable = 1;
2173 unsigned int index;
2174 in_addr_t ifindex;
2175
2176 if (!setsockopt( fd, SOL_SOCKET, SO_BINDTODEVICE, name, strlen( name ) + 1 ))
2177 return 0;
2178
2179 /* SO_BINDTODEVICE requires NET_CAP_RAW until Linux 5.7. */
2180 if (debug_level)
2181 fprintf( stderr, "setsockopt SO_BINDTODEVICE fd %d, name %s failed: %s, falling back to SO_REUSE_ADDR\n",
2182 fd, name, strerror( errno ));
2183
2184 if (!(index = if_nametoindex( name )))
2185 return -1;
2186
2187 ifindex = htonl( index );
2188 if (setsockopt( fd, IPPROTO_IP, IP_UNICAST_IF, &ifindex, sizeof(ifindex) ) < 0)
2189 return -1;
2190
2191 specific_interface_filter = generic_interface_filter;
2192 specific_interface_filter.iface_rule.k = index;
2193 specific_interface_filter.ip_rule.k = htonl( bind_addr );
2194 filter_prog.len = sizeof(generic_interface_filter) / sizeof(struct sock_filter);
2195 filter_prog.filter = (struct sock_filter *)&specific_interface_filter;
2196 if (setsockopt( fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter_prog, sizeof(filter_prog) ))
2197 return -1;
2198
2199 return setsockopt( fd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable) );
2200 }
2201
2202 #else
2203
2204 static int bind_to_iface_name( int fd, in_addr_t bind_addr, const char *name )
2205 {
2206 errno = EOPNOTSUPP;
2207 return -1;
2208 }
2209
2210 #endif /* LINUX_BOUND_IF */
2211
2212 /* Take bind() calls on any name corresponding to a local network adapter and
2213 * restrict the given socket to operating only on the specified interface. This
2214 * restriction consists of two components:
2215 * 1) An outgoing packet restriction suggesting the egress interface for all
2216 * packets.
2217 * 2) An incoming packet restriction dropping packets not meant for the
2218 * interface.
2219 * If the function succeeds in placing these restrictions, then the name for the
2220 * bind() may safely be changed to INADDR_ANY, permitting the transmission and
2221 * receipt of broadcast packets on the socket. This behavior is only relevant to
2222 * UDP sockets and is needed for applications that expect to be able to receive
2223 * broadcast packets on a socket that is bound to a specific network interface.
2224 */
2225 static int bind_to_interface( struct sock *sock, const struct sockaddr_in *addr )
2226 {
2227 in_addr_t bind_addr = addr->sin_addr.s_addr;
2228 struct ifaddrs *ifaddrs, *ifaddr;
2229 int fd = get_unix_fd( sock->fd );
2230 int err = 0;
2231
2232 if (bind_addr == htonl( INADDR_ANY ) || bind_addr == htonl( INADDR_LOOPBACK ))
2233 return 0;
2234 if (sock->type != WS_SOCK_DGRAM)
2235 return 0;
2236
2237 if (getifaddrs( &ifaddrs ) < 0) return 0;
2238
2239 for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next)
2240 {
2241 if (ifaddr->ifa_addr && ifaddr->ifa_addr->sa_family == AF_INET
2242 && ((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr.s_addr == bind_addr)
2243 {
2244 if ((err = bind_to_iface_name( fd, bind_addr, ifaddr->ifa_name )) < 0)
2245 {
2246 if (debug_level)
2247 fprintf( stderr, "failed to bind to interface: %s\n", strerror( errno ) );
2248 }
2249 break;
2250 }
2251 }
2252 freeifaddrs( ifaddrs );
2253 return !err;
2254 }
2255
2256 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
2257 static unsigned int get_ipv6_interface_index( const struct in6_addr *addr )
2258 {
2259 struct ifaddrs *ifaddrs, *ifaddr;
2260
2261 if (getifaddrs( &ifaddrs ) < 0) return 0;
2262
2263 for (ifaddr = ifaddrs; ifaddr != NULL; ifaddr = ifaddr->ifa_next)
2264 {
2265 if (ifaddr->ifa_addr && ifaddr->ifa_addr->sa_family == AF_INET6
2266 && !memcmp( &((struct sockaddr_in6 *)ifaddr->ifa_addr)->sin6_addr, addr, sizeof(*addr) ))
2267 {
2268 unsigned int index = if_nametoindex( ifaddr->ifa_name );
2269
2270 if (!index)
2271 {
2272 if (debug_level)
2273 fprintf( stderr, "Unable to look up interface index for %s: %s\n",
2274 ifaddr->ifa_name, strerror( errno ) );
2275 continue;
2276 }
2277
2278 freeifaddrs( ifaddrs );
2279 return index;
2280 }
2281 }
2282
2283 freeifaddrs( ifaddrs );
2284 return 0;
2285 }
2286 #endif
2287
2288 /* return an errno value mapped to a WSA error */
2289 static unsigned int sock_get_error( int err )
2290 {
2291 switch (err)
2292 {
2293 case EINTR: return WSAEINTR;
2294 case EBADF: return WSAEBADF;
2295 case EPERM:
2296 case EACCES: return WSAEACCES;
2297 case EFAULT: return WSAEFAULT;
2298 case EINVAL: return WSAEINVAL;
2299 case EMFILE: return WSAEMFILE;
2300 case EINPROGRESS:
2301 case EWOULDBLOCK: return WSAEWOULDBLOCK;
2302 case EALREADY: return WSAEALREADY;
2303 case ENOTSOCK: return WSAENOTSOCK;
2304 case EDESTADDRREQ: return WSAEDESTADDRREQ;
2305 case EMSGSIZE: return WSAEMSGSIZE;
2306 case EPROTOTYPE: return WSAEPROTOTYPE;
2307 case ENOPROTOOPT: return WSAENOPROTOOPT;
2308 case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT;
2309 case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT;
2310 case EOPNOTSUPP: return WSAEOPNOTSUPP;
2311 case EPFNOSUPPORT: return WSAEPFNOSUPPORT;
2312 case EAFNOSUPPORT: return WSAEAFNOSUPPORT;
2313 case EADDRINUSE: return WSAEADDRINUSE;
2314 case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL;
2315 case ENETDOWN: return WSAENETDOWN;
2316 case ENETUNREACH: return WSAENETUNREACH;
2317 case ENETRESET: return WSAENETRESET;
2318 case ECONNABORTED: return WSAECONNABORTED;
2319 case EPIPE:
2320 case ECONNRESET: return WSAECONNRESET;
2321 case ENOBUFS: return WSAENOBUFS;
2322 case EISCONN: return WSAEISCONN;
2323 case ENOTCONN: return WSAENOTCONN;
2324 case ESHUTDOWN: return WSAESHUTDOWN;
2325 case ETOOMANYREFS: return WSAETOOMANYREFS;
2326 case ETIMEDOUT: return WSAETIMEDOUT;
2327 case ECONNREFUSED: return WSAECONNREFUSED;
2328 case ELOOP: return WSAELOOP;
2329 case ENAMETOOLONG: return WSAENAMETOOLONG;
2330 case EHOSTDOWN: return WSAEHOSTDOWN;
2331 case EHOSTUNREACH: return WSAEHOSTUNREACH;
2332 case ENOTEMPTY: return WSAENOTEMPTY;
2333 #ifdef EPROCLIM
2334 case EPROCLIM: return WSAEPROCLIM;
2335 #endif
2336 #ifdef EUSERS
2337 case EUSERS: return WSAEUSERS;
2338 #endif
2339 #ifdef EDQUOT
2340 case EDQUOT: return WSAEDQUOT;
2341 #endif
2342 #ifdef ESTALE
2343 case ESTALE: return WSAESTALE;
2344 #endif
2345 #ifdef EREMOTE
2346 case EREMOTE: return WSAEREMOTE;
2347 #endif
2348
2349 case 0: return 0;
2350 default:
2351 errno = err;
2352 perror("wineserver: sock_get_error() can't map error");
2353 return WSAEFAULT;
2354 }
2355 }
2356
2357 static int sock_get_ntstatus( int err )
2358 {
2359 switch ( err )
2360 {
2361 case EBADF: return STATUS_INVALID_HANDLE;
2362 case EBUSY: return STATUS_DEVICE_BUSY;
2363 case EPERM:
2364 case EACCES: return STATUS_ACCESS_DENIED;
2365 case EFAULT: return STATUS_ACCESS_VIOLATION;
2366 case EINVAL: return STATUS_INVALID_PARAMETER;
2367 case ENFILE:
2368 case EMFILE: return STATUS_TOO_MANY_OPENED_FILES;
2369 case EINPROGRESS:
2370 case EWOULDBLOCK: return STATUS_DEVICE_NOT_READY;
2371 case EALREADY: return STATUS_NETWORK_BUSY;
2372 case ENOTSOCK: return STATUS_OBJECT_TYPE_MISMATCH;
2373 case EDESTADDRREQ: return STATUS_INVALID_PARAMETER;
2374 case EMSGSIZE: return STATUS_BUFFER_OVERFLOW;
2375 case EPROTONOSUPPORT:
2376 case ESOCKTNOSUPPORT:
2377 case EPFNOSUPPORT:
2378 case EAFNOSUPPORT:
2379 case EPROTOTYPE: return STATUS_NOT_SUPPORTED;
2380 case ENOPROTOOPT: return STATUS_INVALID_PARAMETER;
2381 case EOPNOTSUPP: return STATUS_NOT_SUPPORTED;
2382 case EADDRINUSE: return STATUS_SHARING_VIOLATION;
2383 /* Linux returns ENODEV when specifying an invalid sin6_scope_id;
2384 * Windows returns STATUS_INVALID_ADDRESS_COMPONENT */
2385 case ENODEV:
2386 case EADDRNOTAVAIL: return STATUS_INVALID_ADDRESS_COMPONENT;
2387 case ECONNREFUSED: return STATUS_CONNECTION_REFUSED;
2388 case ESHUTDOWN: return STATUS_PIPE_DISCONNECTED;
2389 case ENOTCONN: return STATUS_INVALID_CONNECTION;
2390 case ETIMEDOUT: return STATUS_IO_TIMEOUT;
2391 case ENETUNREACH: return STATUS_NETWORK_UNREACHABLE;
2392 case EHOSTUNREACH: return STATUS_HOST_UNREACHABLE;
2393 case ENETDOWN: return STATUS_NETWORK_BUSY;
2394 case EPIPE:
2395 case ECONNRESET: return STATUS_CONNECTION_RESET;
2396 case ECONNABORTED: return STATUS_CONNECTION_ABORTED;
2397 case EISCONN: return STATUS_CONNECTION_ACTIVE;
2398
2399 case 0: return STATUS_SUCCESS;
2400 default:
2401 errno = err;
2402 perror("wineserver: sock_get_ntstatus() can't map error");
2403 return STATUS_UNSUCCESSFUL;
2404 }
2405 }
2406
2407 static struct accept_req *alloc_accept_req( struct sock *sock, struct sock *acceptsock, struct async *async,
2408 const struct afd_accept_into_params *params )
2409 {
2410 struct accept_req *req = mem_alloc( sizeof(*req) );
2411
2412 if (req)
2413 {
2414 req->async = (struct async *)grab_object( async );
2415 req->iosb = async_get_iosb( async );
2416 req->sock = (struct sock *)grab_object( sock );
2417 req->acceptsock = acceptsock;
2418 if (acceptsock) grab_object( acceptsock );
2419 req->accepted = 0;
2420 req->recv_len = 0;
2421 req->local_len = 0;
2422 if (params)
2423 {
2424 req->recv_len = params->recv_len;
2425 req->local_len = params->local_len;
2426 }
2427 }
2428 return req;
2429 }
2430
2431 static void sock_ioctl( struct fd *fd, ioctl_code_t code, struct async *async )
2432 {
2433 struct sock *sock = get_fd_user( fd );
2434 int unix_fd = -1;
2435
2436 assert( sock->obj.ops == &sock_ops );
2437
2438 if (code != IOCTL_AFD_WINE_CREATE && code != IOCTL_AFD_POLL && (unix_fd = get_unix_fd( fd )) < 0)
2439 return;
2440
2441 switch(code)
2442 {
2443 case IOCTL_AFD_WINE_CREATE:
2444 {
2445 const struct afd_create_params *params = get_req_data();
2446
2447 if (get_req_data_size() != sizeof(*params))
2448 {
2449 set_error( STATUS_INVALID_PARAMETER );
2450 return;
2451 }
2452 init_socket( sock, params->family, params->type, params->protocol );
2453 return;
2454 }
2455
2456 case IOCTL_AFD_WINE_ACCEPT:
2457 {
2458 struct sock *acceptsock;
2459 obj_handle_t handle;
2460
2461 if (get_reply_max_size() != sizeof(handle))
2462 {
2463 set_error( STATUS_BUFFER_TOO_SMALL );
2464 return;
2465 }
2466
2467 if (!(acceptsock = accept_socket( sock )))
2468 {
2469 struct accept_req *req;
2470
2471 if (sock->nonblocking) return;
2472 if (get_error() != STATUS_DEVICE_NOT_READY) return;
2473
2474 if (!(req = alloc_accept_req( sock, NULL, async, NULL ))) return;
2475 list_add_tail( &sock->accept_list, &req->entry );
2476
2477 async_set_completion_callback( async, free_accept_req, req );
2478 queue_async( &sock->accept_q, async );
2479 sock_reselect( sock );
2480 set_error( STATUS_PENDING );
2481 return;
2482 }
2483 handle = alloc_handle( current->process, &acceptsock->obj,
2484 GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE, OBJ_INHERIT );
2485 acceptsock->wparam = handle;
2486 sock_reselect( acceptsock );
2487 release_object( acceptsock );
2488 set_reply_data( &handle, sizeof(handle) );
2489 return;
2490 }
2491
2492 case IOCTL_AFD_WINE_ACCEPT_INTO:
2493 {
2494 static const int access = FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES | FILE_READ_DATA;
2495 const struct afd_accept_into_params *params = get_req_data();
2496 struct sock *acceptsock;
2497 unsigned int remote_len;
2498 struct accept_req *req;
2499
2500 if (get_req_data_size() != sizeof(*params) ||
2501 get_reply_max_size() < params->recv_len ||
2502 get_reply_max_size() - params->recv_len < params->local_len)
2503 {
2504 set_error( STATUS_BUFFER_TOO_SMALL );
2505 return;
2506 }
2507
2508 remote_len = get_reply_max_size() - params->recv_len - params->local_len;
2509 if (remote_len < sizeof(int))
2510 {
2511 set_error( STATUS_INVALID_PARAMETER );
2512 return;
2513 }
2514
2515 if (!(acceptsock = (struct sock *)get_handle_obj( current->process, params->accept_handle, access, &sock_ops )))
2516 return;
2517
2518 if (acceptsock->accept_recv_req)
2519 {
2520 release_object( acceptsock );
2521 set_error( STATUS_INVALID_PARAMETER );
2522 return;
2523 }
2524
2525 if (!(req = alloc_accept_req( sock, acceptsock, async, params )))
2526 {
2527 release_object( acceptsock );
2528 return;
2529 }
2530 list_add_tail( &sock->accept_list, &req->entry );
2531 acceptsock->accept_recv_req = req;
2532 release_object( acceptsock );
2533
2534 acceptsock->wparam = params->accept_handle;
2535 async_set_completion_callback( async, free_accept_req, req );
2536 queue_async( &sock->accept_q, async );
2537 sock_reselect( sock );
2538 set_error( STATUS_PENDING );
2539 return;
2540 }
2541
2542 case IOCTL_AFD_LISTEN:
2543 {
2544 const struct afd_listen_params *params = get_req_data();
2545
2546 if (get_req_data_size() < sizeof(*params))
2547 {
2548 set_error( STATUS_INVALID_PARAMETER );
2549 return;
2550 }
2551
2552 if (sock->type == WS_SOCK_DGRAM)
2553 {
2554 set_error( STATUS_NOT_SUPPORTED );
2555 return;
2556 }
2557
2558 if (!sock->bound)
2559 {
2560 set_error( STATUS_INVALID_PARAMETER );
2561 return;
2562 }
2563
2564 if (listen( unix_fd, params->backlog ) < 0)
2565 {
2566 set_error( sock_get_ntstatus( errno ) );
2567 return;
2568 }
2569
2570 sock->state = SOCK_LISTENING;
2571
2572 /* a listening socket can no longer be accepted into */
2573 allow_fd_caching( sock->fd );
2574
2575 /* we may already be selecting for AFD_POLL_ACCEPT */
2576 sock_reselect( sock );
2577 return;
2578 }
2579
2580 case IOCTL_AFD_WINE_CONNECT:
2581 {
2582 const struct afd_connect_params *params = get_req_data();
2583 const struct WS_sockaddr *addr;
2584 union unix_sockaddr unix_addr, peer_addr;
2585 struct connect_req *req;
2586 socklen_t unix_len;
2587 int send_len, ret;
2588
2589 if (get_req_data_size() < sizeof(*params) ||
2590 get_req_data_size() - sizeof(*params) < params->addr_len)
2591 {
2592 set_error( STATUS_BUFFER_TOO_SMALL );
2593 return;
2594 }
2595 send_len = get_req_data_size() - sizeof(*params) - params->addr_len;
2596 addr = (const struct WS_sockaddr *)(params + 1);
2597
2598 if (!params->synchronous && !sock->bound)
2599 {
2600 set_error( STATUS_INVALID_PARAMETER );
2601 return;
2602 }
2603
2604 if (sock->accept_recv_req)
2605 {
2606 set_error( STATUS_INVALID_PARAMETER );
2607 return;
2608 }
2609
2610 if (sock->connect_req)
2611 {
2612 set_error( STATUS_INVALID_PARAMETER );
2613 return;
2614 }
2615
2616 switch (sock->state)
2617 {
2618 case SOCK_LISTENING:
2619 set_error( STATUS_INVALID_PARAMETER );
2620 return;
2621
2622 case SOCK_CONNECTING:
2623 /* FIXME: STATUS_ADDRESS_ALREADY_ASSOCIATED probably isn't right,
2624 * but there's no status code that maps to WSAEALREADY... */
2625 set_error( params->synchronous ? STATUS_ADDRESS_ALREADY_ASSOCIATED : STATUS_INVALID_PARAMETER );
2626 return;
2627
2628 case SOCK_CONNECTED:
2629 set_error( STATUS_CONNECTION_ACTIVE );
2630 return;
2631
2632 case SOCK_UNCONNECTED:
2633 case SOCK_CONNECTIONLESS:
2634 break;
2635 }
2636
2637 unix_len = sockaddr_to_unix( addr, params->addr_len, &unix_addr );
2638 if (!unix_len)
2639 {
2640 set_error( STATUS_INVALID_ADDRESS );
2641 return;
2642 }
2643 if (unix_addr.addr.sa_family == AF_INET && !memcmp( &unix_addr.in.sin_addr, magic_loopback_addr, 4 ))
2644 unix_addr.in.sin_addr.s_addr = htonl( INADDR_LOOPBACK );
2645
2646 memcpy( &peer_addr, &unix_addr, sizeof(unix_addr) );
2647 ret = connect( unix_fd, &unix_addr.addr, unix_len );
2648 if (ret < 0 && errno == ECONNABORTED)
2649 {
2650 /* On Linux with nonblocking socket if the previous connect() failed for any reason (including
2651 * timeout), next connect will fail. If the error code was queried by getsockopt( SO_ERROR )
2652 * the error code returned now is ECONNABORTED (otherwise that is the actual connect() failure
2653 * error code). If we got here after previous connect attempt on the socket that means
2654 * we already queried SO_ERROR in sock_error(), so retrying on ECONNABORTED only is
2655 * sufficient. */
2656 ret = connect( unix_fd, &unix_addr.addr, unix_len );
2657 }
2658
2659 if (ret < 0 && errno != EINPROGRESS)
2660 {
2661 set_error( sock_get_ntstatus( errno ) );
2662 return;
2663 }
2664
2665 /* a connected or connecting socket can no longer be accepted into */
2666 allow_fd_caching( sock->fd );
2667
2668 unix_len = sizeof(unix_addr);
2669 getsockname( unix_fd, &unix_addr.addr, &unix_len );
2670 sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) );
2671 sock->peer_addr_len = sockaddr_from_unix( &peer_addr, &sock->peer_addr.addr, sizeof(sock->peer_addr));
2672
2673 sock->bound = 1;
2674
2675 if (!ret)
2676 {
2677 if (sock->type != WS_SOCK_DGRAM)
2678 {
2679 sock->state = SOCK_CONNECTED;
2680 sock->connect_time = current_time;
2681 }
2682
2683 if (!send_len) return;
2684 }
2685
2686 if (sock->type != WS_SOCK_DGRAM)
2687 sock->state = SOCK_CONNECTING;
2688
2689 if (params->synchronous && sock->nonblocking)
2690 {
2691 sock_reselect( sock );
2692 set_error( STATUS_DEVICE_NOT_READY );
2693 return;
2694 }
2695
2696 if (!(req = mem_alloc( sizeof(*req) )))
2697 return;
2698
2699 req->async = (struct async *)grab_object( async );
2700 req->iosb = async_get_iosb( async );
2701 req->sock = (struct sock *)grab_object( sock );
2702 req->addr_len = params->addr_len;
2703 req->send_len = send_len;
2704 req->send_cursor = 0;
2705
2706 async_set_completion_callback( async, free_connect_req, req );
2707 sock->connect_req = req;
2708 queue_async( &sock->connect_q, async );
2709 sock_reselect( sock );
2710 set_error( STATUS_PENDING );
2711 return;
2712 }
2713
2714 case IOCTL_AFD_WINE_SHUTDOWN:
2715 {
2716 unsigned int how;
2717
2718 if (get_req_data_size() < sizeof(int))
2719 {
2720 set_error( STATUS_BUFFER_TOO_SMALL );
2721 return;
2722 }
2723 how = *(int *)get_req_data();
2724
2725 if (how > SD_BOTH)
2726 {
2727 set_error( STATUS_INVALID_PARAMETER );
2728 return;
2729 }
2730
2731 if (sock->state != SOCK_CONNECTED && sock->state != SOCK_CONNECTIONLESS)
2732 {
2733 set_error( STATUS_INVALID_CONNECTION );
2734 return;
2735 }
2736
2737 if (how != SD_SEND)
2738 {
2739 sock->rd_shutdown = 1;
2740 }
2741 if (how != SD_RECEIVE)
2742 {
2743 sock->wr_shutdown = 1;
2744 if (list_empty( &sock->write_q.queue ))
2745 shutdown( unix_fd, SHUT_WR );
2746 else
2747 sock->wr_shutdown_pending = 1;
2748 }
2749
2750 if (how == SD_BOTH)
2751 {
2752 if (sock->event) release_object( sock->event );
2753 sock->event = NULL;
2754 sock->window = 0;
2755 sock->mask = 0;
2756 sock->nonblocking = 1;
2757 }
2758
2759 sock_reselect( sock );
2760 return;
2761 }
2762
2763 case IOCTL_AFD_WINE_ADDRESS_LIST_CHANGE:
2764 {
2765 int force_async;
2766
2767 if (get_req_data_size() < sizeof(int))
2768 {
2769 set_error( STATUS_BUFFER_TOO_SMALL );
2770 return;
2771 }
2772 force_async = *(int *)get_req_data();
2773
2774 if (sock->nonblocking && !force_async)
2775 {
2776 set_error( STATUS_DEVICE_NOT_READY );
2777 return;
2778 }
2779 if (!sock_get_ifchange( sock )) return;
2780 queue_async( &sock->ifchange_q, async );
2781 set_error( STATUS_PENDING );
2782 return;
2783 }
2784
2785 case IOCTL_AFD_WINE_FIONBIO:
2786 if (get_req_data_size() < sizeof(int))
2787 {
2788 set_error( STATUS_BUFFER_TOO_SMALL );
2789 return;
2790 }
2791 if (*(int *)get_req_data())
2792 {
2793 sock->nonblocking = 1;
2794 }
2795 else
2796 {
2797 if (sock->mask)
2798 {
2799 set_error( STATUS_INVALID_PARAMETER );
2800 return;
2801 }
2802 sock->nonblocking = 0;
2803 }
2804 return;
2805
2806 case IOCTL_AFD_EVENT_SELECT:
2807 {
2808 struct event *event = NULL;
2809 obj_handle_t event_handle;
2810 int mask;
2811
2812 set_async_pending( async );
2813
2814 if (is_machine_64bit( current->process->machine ))
2815 {
2816 const struct afd_event_select_params_64 *params = get_req_data();
2817
2818 if (get_req_data_size() < sizeof(*params))
2819 {
2820 set_error( STATUS_INVALID_PARAMETER );
2821 return;
2822 }
2823
2824 event_handle = params->event;
2825 mask = params->mask;
2826 }
2827 else
2828 {
2829 const struct afd_event_select_params_32 *params = get_req_data();
2830
2831 if (get_req_data_size() < sizeof(*params))
2832 {
2833 set_error( STATUS_INVALID_PARAMETER );
2834 return;
2835 }
2836
2837 event_handle = params->event;
2838 mask = params->mask;
2839 }
2840
2841 if ((event_handle || mask) &&
2842 !(event = get_event_obj( current->process, event_handle, EVENT_MODIFY_STATE )))
2843 {
2844 set_error( STATUS_INVALID_PARAMETER );
2845 return;
2846 }
2847
2848 if (sock->event) release_object( sock->event );
2849 sock->event = event;
2850 sock->mask = mask;
2851 sock->window = 0;
2852 sock->message = 0;
2853 sock->wparam = 0;
2854 sock->nonblocking = 1;
2855
2856 sock_reselect( sock );
2857
2858 /* Explicitly wake the socket up if the mask matches pending_events.
2859 *
2860 * The logic here is a bit surprising. We always set the event if the
2861 * socket has events that haven't been consumed by
2862 * WSAEnumNetworkEvents() yet, including if WSAEventSelect() is called
2863 * multiple times without consuming the events.
2864 * However, once the events are consumed by WSAEnumNetworkEvents(), we
2865 * don't set the event again (even though e.g. data is still available)
2866 * until a "reset" call (i.e. that clears reported_events). */
2867
2868 if (event && (sock->pending_events & mask))
2869 {
2870 if (debug_level) fprintf( stderr, "signalling pending events %#x due to event select\n",
2871 sock->pending_events & mask );
2872 set_event( event );
2873 }
2874
2875 return;
2876 }
2877
2878 case IOCTL_AFD_WINE_MESSAGE_SELECT:
2879 {
2880 const struct afd_message_select_params *params = get_req_data();
2881
2882 if (get_req_data_size() < sizeof(params))
2883 {
2884 set_error( STATUS_BUFFER_TOO_SMALL );
2885 return;
2886 }
2887
2888 if (sock->event) release_object( sock->event );
2889
2890 if (params->window)
2891 {
2892 sock->pending_events = 0;
2893 sock->reported_events = 0;
2894 }
2895 sock->event = NULL;
2896 sock->mask = params->mask;
2897 sock->window = params->window;
2898 sock->message = params->message;
2899 sock->wparam = params->handle;
2900 sock->nonblocking = 1;
2901
2902 sock_reselect( sock );
2903
2904 return;
2905 }
2906
2907 case IOCTL_AFD_BIND:
2908 {
2909 const struct afd_bind_params *params = get_req_data();
2910 union unix_sockaddr unix_addr, bind_addr;
2911 data_size_t in_size;
2912 socklen_t unix_len;
2913 int v6only = 1;
2914
2915 /* the ioctl is METHOD_NEITHER, so ntdll gives us the output buffer as
2916 * input */
2917 if (get_req_data_size() < get_reply_max_size())
2918 {
2919 set_error( STATUS_BUFFER_TOO_SMALL );
2920 return;
2921 }
2922 in_size = get_req_data_size() - get_reply_max_size();
2923 if (in_size < offsetof(struct afd_bind_params, addr.sa_data)
2924 || get_reply_max_size() < in_size - sizeof(int))
2925 {
2926 set_error( STATUS_INVALID_PARAMETER );
2927 return;
2928 }
2929
2930 if (sock->bound)
2931 {
2932 set_error( STATUS_ADDRESS_ALREADY_ASSOCIATED );
2933 return;
2934 }
2935
2936 unix_len = sockaddr_to_unix( &params->addr, in_size - sizeof(int), &unix_addr );
2937 if (!unix_len)
2938 {
2939 set_error( STATUS_INVALID_ADDRESS );
2940 return;
2941 }
2942 bind_addr = unix_addr;
2943
2944 if (unix_addr.addr.sa_family == AF_INET)
2945 {
2946 if (!memcmp( &unix_addr.in.sin_addr, magic_loopback_addr, 4 )
2947 || bind_to_interface( sock, &unix_addr.in ))
2948 bind_addr.in.sin_addr.s_addr = htonl( INADDR_ANY );
2949 }
2950 else if (unix_addr.addr.sa_family == AF_INET6)
2951 {
2952 #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
2953 /* Windows allows specifying zero to use the default scope. Linux
2954 * interprets it as an interface index and requires that it be
2955 * nonzero. */
2956 if (!unix_addr.in6.sin6_scope_id)
2957 bind_addr.in6.sin6_scope_id = get_ipv6_interface_index( &unix_addr.in6.sin6_addr );
2958 #endif
2959 }
2960
2961 set_async_pending( async );
2962
2963 #ifdef IPV6_V6ONLY
2964 if (sock->family == WS_AF_INET6)
2965 {
2966 socklen_t len = sizeof(v6only);
2967
2968 getsockopt( get_unix_fd(sock->fd), IPPROTO_IPV6, IPV6_V6ONLY, &v6only, &len );
2969 }
2970 #endif
2971
2972 if (check_addr_usage( sock, &bind_addr, v6only ))
2973 return;
2974
2975 if (bind( unix_fd, &bind_addr.addr, unix_len ) < 0)
2976 {
2977 if (errno == EADDRINUSE && sock->reuseaddr)
2978 errno = EACCES;
2979
2980 set_error( sock_get_ntstatus( errno ) );
2981 return;
2982 }
2983
2984 sock->bound = 1;
2985
2986 unix_len = sizeof(bind_addr);
2987 if (!getsockname( unix_fd, &bind_addr.addr, &unix_len ))
2988 {
2989 /* store the interface or magic loopback address instead of the
2990 * actual unix address */
2991 if (bind_addr.addr.sa_family == AF_INET)
2992 bind_addr.in.sin_addr = unix_addr.in.sin_addr;
2993 sock->addr_len = sockaddr_from_unix( &bind_addr, &sock->addr.addr, sizeof(sock->addr) );
2994 }
2995
2996 update_addr_usage( sock, &bind_addr, v6only );
2997
2998 if (get_reply_max_size() >= sock->addr_len)
2999 set_reply_data( &sock->addr, sock->addr_len );
3000 return;
3001 }
3002
3003 case IOCTL_AFD_GETSOCKNAME:
3004 if (!sock->bound)
3005 {
3006 set_error( STATUS_INVALID_PARAMETER );
3007 return;
3008 }
3009
3010 if (get_reply_max_size() < sock->addr_len)
3011 {
3012 set_error( STATUS_BUFFER_TOO_SMALL );
3013 return;
3014 }
3015
3016 set_reply_data( &sock->addr, sock->addr_len );
3017 return;
3018
3019 case IOCTL_AFD_WINE_GETPEERNAME:
3020 if (sock->state != SOCK_CONNECTED &&
3021 sock->state != SOCK_CONNECTING &&
3022 sock->state != SOCK_CONNECTIONLESS)
3023 {
3024 set_error( STATUS_INVALID_CONNECTION );
3025 return;
3026 }
3027
3028 /* If ConnectEx() hasn't finished connecting (or failing to connect) the provided
3029 * socket, getpeername() can't be called on it. This seems to be undocumented
3030 * and is *not* the case for connect(), but we do test for it in ws2_32.
3031 * connect_req is non-NULL iff ConnectEx() was used and has not finished,
3032 * so we can use it as a check for ConnectEx() usage here. */
3033 if (sock->connect_req)
3034 {
3035 set_error( STATUS_INVALID_CONNECTION );
3036 return;
3037 }
3038
3039 if (!sock->peer_addr_len && sock->type == WS_SOCK_DGRAM)
3040 {
3041 set_error( STATUS_INVALID_CONNECTION );
3042 return;
3043 }
3044
3045 if (get_reply_max_size() < sock->peer_addr_len)
3046 {
3047 set_error( STATUS_BUFFER_TOO_SMALL );
3048 return;
3049 }
3050
3051 set_reply_data( &sock->peer_addr, sock->peer_addr_len );
3052 return;
3053
3054 case IOCTL_AFD_WINE_DEFER:
3055 {
3056 const obj_handle_t *handle = get_req_data();
3057 struct sock *acceptsock;
3058
3059 if (get_req_data_size() < sizeof(*handle))
3060 {
3061 set_error( STATUS_BUFFER_TOO_SMALL );
3062 return;
3063 }
3064
3065 acceptsock = (struct sock *)get_handle_obj( current->process, *handle, 0, &sock_ops );
3066 if (!acceptsock) return;
3067
3068 sock->deferred = acceptsock;
3069 return;
3070 }
3071
3072 case IOCTL_AFD_WINE_GET_INFO:
3073 {
3074 struct afd_get_info_params params;
3075
3076 if (get_reply_max_size() < sizeof(params))
3077 {
3078 set_error( STATUS_BUFFER_TOO_SMALL );
3079 return;
3080 }
3081
3082 params.family = sock->family;
3083 params.type = sock->type;
3084 params.protocol = sock->proto;
3085 set_reply_data( &params, sizeof(params) );
3086 return;
3087 }
3088
3089 case IOCTL_AFD_WINE_GET_SO_ACCEPTCONN:
3090 {
3091 int listening = (sock->state == SOCK_LISTENING);
3092
3093 if (get_reply_max_size() < sizeof(listening))
3094 {
3095 set_error( STATUS_BUFFER_TOO_SMALL );
3096 return;
3097 }
3098
3099 set_reply_data( &listening, sizeof(listening) );
3100 return;
3101 }
3102
3103 case IOCTL_AFD_WINE_GET_SO_ERROR:
3104 {
3105 int error;
3106 unsigned int i;
3107
3108 if (get_reply_max_size() < sizeof(error))
3109 {
3110 set_error( STATUS_BUFFER_TOO_SMALL );
3111 return;
3112 }
3113
3114 error = sock_error( sock );
3115 if (!error)
3116 {
3117 for (i = 0; i < ARRAY_SIZE( sock->errors ); ++i)
3118 {
3119 if (sock->errors[i])
3120 {
3121 error = sock->errors[i];
3122 break;
3123 }
3124 }
3125 }
3126
3127 error = sock_get_error( error );
3128 set_reply_data( &error, sizeof(error) );
3129 return;
3130 }
3131
3132 case IOCTL_AFD_WINE_GET_SO_RCVBUF:
3133 {
3134 int rcvbuf = sock->rcvbuf;
3135
3136 if (get_reply_max_size() < sizeof(rcvbuf))
3137 {
3138 set_error( STATUS_BUFFER_TOO_SMALL );
3139 return;
3140 }
3141
3142 set_reply_data( &rcvbuf, sizeof(rcvbuf) );
3143 return;
3144 }
3145
3146 case IOCTL_AFD_WINE_SET_SO_RCVBUF:
3147 {
3148 DWORD rcvbuf, set_rcvbuf;
3149
3150 if (get_req_data_size() < sizeof(rcvbuf))
3151 {
3152 set_error( STATUS_BUFFER_TOO_SMALL );
3153 return;
3154 }
3155 rcvbuf = *(DWORD *)get_req_data();
3156 set_rcvbuf = max( rcvbuf, MIN_RCVBUF );
3157
3158 if (!setsockopt( unix_fd, SOL_SOCKET, SO_RCVBUF, (char *)&set_rcvbuf, sizeof(set_rcvbuf) ))
3159 sock->rcvbuf = rcvbuf;
3160 else
3161 set_error( sock_get_ntstatus( errno ) );
3162 return;
3163 }
3164
3165 case IOCTL_AFD_WINE_GET_SO_RCVTIMEO:
3166 {
3167 DWORD rcvtimeo = sock->rcvtimeo;
3168
3169 if (get_reply_max_size() < sizeof(rcvtimeo))
3170 {
3171 set_error( STATUS_BUFFER_TOO_SMALL );
3172 return;
3173 }
3174
3175 set_reply_data( &rcvtimeo, sizeof(rcvtimeo) );
3176 return;
3177 }
3178
3179 case IOCTL_AFD_WINE_SET_SO_RCVTIMEO:
3180 {
3181 DWORD rcvtimeo;
3182
3183 if (get_req_data_size() < sizeof(rcvtimeo))
3184 {
3185 set_error( STATUS_BUFFER_TOO_SMALL );
3186 return;
3187 }
3188 rcvtimeo = *(DWORD *)get_req_data();
3189
3190 sock->rcvtimeo = rcvtimeo;
3191 return;
3192 }
3193
3194 /* BSD socket SO_REUSEADDR is not compatible with winsock semantics. */
3195 case IOCTL_AFD_WINE_SET_SO_REUSEADDR:
3196 {
3197 int reuse, ret;
3198
3199 if (get_req_data_size() < sizeof(reuse))
3200 {
3201 set_error( STATUS_BUFFER_TOO_SMALL );
3202 return;
3203 }
3204
3205 reuse = *(int *)get_req_data();
3206
3207 if (reuse && sock->exclusiveaddruse)
3208 {
3209 set_error( STATUS_INVALID_PARAMETER );
3210 return;
3211 }
3212
3213 if (is_tcp_socket( sock ))
3214 ret = 0;
3215 else
3216 ret = setsockopt( unix_fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse) );
3217 #ifdef __APPLE__
3218 if (!ret) ret = setsockopt( unix_fd, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(reuse) );
3219 #endif
3220 if (ret)
3221 set_error( sock_get_ntstatus( errno ) );
3222 else
3223 sock->reuseaddr = !!reuse;
3224 return;
3225 }
3226
3227 case IOCTL_AFD_WINE_SET_SO_EXCLUSIVEADDRUSE:
3228 {
3229 int exclusive;
3230
3231 if (get_req_data_size() < sizeof(exclusive))
3232 {
3233 set_error( STATUS_BUFFER_TOO_SMALL );
3234 return;
3235 }
3236
3237 exclusive = *(int *)get_req_data();
3238 if (exclusive && sock->reuseaddr)
3239 {
3240 set_error( STATUS_INVALID_PARAMETER );
3241 return;
3242 }
3243 sock->exclusiveaddruse = !!exclusive;
3244 return;
3245 }
3246
3247 case IOCTL_AFD_WINE_GET_SO_SNDBUF:
3248 {
3249 int sndbuf = sock->sndbuf;
3250
3251 if (get_reply_max_size() < sizeof(sndbuf))
3252 {
3253 set_error( STATUS_BUFFER_TOO_SMALL );
3254 return;
3255 }
3256
3257 set_reply_data( &sndbuf, sizeof(sndbuf) );
3258 return;
3259 }
3260
3261 case IOCTL_AFD_WINE_SET_SO_SNDBUF:
3262 {
3263 DWORD sndbuf;
3264
3265 if (get_req_data_size() < sizeof(sndbuf))
3266 {
3267 set_error( STATUS_BUFFER_TOO_SMALL );
3268 return;
3269 }
3270 sndbuf = *(DWORD *)get_req_data();
3271
3272 #ifdef __APPLE__
3273 if (!sndbuf)
3274 {
3275 /* setsockopt fails if a zero value is passed */
3276 sock->sndbuf = sndbuf;
3277 return;
3278 }
3279 #endif
3280
3281 if (!setsockopt( unix_fd, SOL_SOCKET, SO_SNDBUF, (char *)&sndbuf, sizeof(sndbuf) ))
3282 sock->sndbuf = sndbuf;
3283 else
3284 set_error( sock_get_ntstatus( errno ) );
3285 return;
3286 }
3287
3288 case IOCTL_AFD_WINE_GET_SO_SNDTIMEO:
3289 {
3290 DWORD sndtimeo = sock->sndtimeo;
3291
3292 if (get_reply_max_size() < sizeof(sndtimeo))
3293 {
3294 set_error( STATUS_BUFFER_TOO_SMALL );
3295 return;
3296 }
3297
3298 set_reply_data( &sndtimeo, sizeof(sndtimeo) );
3299 return;
3300 }
3301
3302 case IOCTL_AFD_WINE_SET_SO_SNDTIMEO:
3303 {
3304 DWORD sndtimeo;
3305
3306 if (get_req_data_size() < sizeof(sndtimeo))
3307 {
3308 set_error( STATUS_BUFFER_TOO_SMALL );
3309 return;
3310 }
3311 sndtimeo = *(DWORD *)get_req_data();
3312
3313 sock->sndtimeo = sndtimeo;
3314 return;
3315 }
3316
3317 case IOCTL_AFD_WINE_GET_SO_CONNECT_TIME:
3318 {
3319 DWORD time = ~0u;
3320
3321 if (get_reply_max_size() < sizeof(time))
3322 {
3323 set_error( STATUS_BUFFER_TOO_SMALL );
3324 return;
3325 }
3326
3327 if (sock->state == SOCK_CONNECTED)
3328 time = (current_time - sock->connect_time) / 10000000;
3329
3330 set_reply_data( &time, sizeof(time) );
3331 return;
3332 }
3333
3334 case IOCTL_AFD_WINE_GET_SO_REUSEADDR:
3335 {
3336 int reuse;
3337
3338 if (!get_reply_max_size())
3339 {
3340 set_error( STATUS_BUFFER_TOO_SMALL );
3341 return;
3342 }
3343
3344 reuse = sock->reuseaddr;
3345 set_reply_data( &reuse, min( sizeof(reuse), get_reply_max_size() ));
3346 return;
3347 }
3348
3349 case IOCTL_AFD_WINE_GET_SO_EXCLUSIVEADDRUSE:
3350 {
3351 int exclusive;
3352
3353 if (!get_reply_max_size())
3354 {
3355 set_error( STATUS_BUFFER_TOO_SMALL );
3356 return;
3357 }
3358
3359 exclusive = sock->exclusiveaddruse;
3360 set_reply_data( &exclusive, min( sizeof(exclusive), get_reply_max_size() ));
3361 return;
3362 }
3363
3364 case IOCTL_AFD_POLL:
3365 {
3366 if (get_reply_max_size() < get_req_data_size())
3367 {
3368 set_error( STATUS_INVALID_PARAMETER );
3369 return;
3370 }
3371
3372 if (is_machine_64bit( current->process->machine ))
3373 {
3374 const struct afd_poll_params_64 *params = get_req_data();
3375
3376 if (get_req_data_size() < sizeof(struct afd_poll_params_64) ||
3377 get_req_data_size() < offsetof( struct afd_poll_params_64, sockets[params->count] ))
3378 {
3379 set_error( STATUS_INVALID_PARAMETER );
3380 return;
3381 }
3382
3383 poll_socket( sock, async, params->exclusive, params->timeout, params->count, params->sockets );
3384 }
3385 else
3386 {
3387 const struct afd_poll_params_32 *params = get_req_data();
3388 struct afd_poll_socket_64 *sockets;
3389 unsigned int i;
3390
3391 if (get_req_data_size() < sizeof(struct afd_poll_params_32) ||
3392 get_req_data_size() < offsetof( struct afd_poll_params_32, sockets[params->count] ))
3393 {
3394 set_error( STATUS_INVALID_PARAMETER );
3395 return;
3396 }
3397
3398 if (!(sockets = mem_alloc( params->count * sizeof(*sockets) ))) return;
3399 for (i = 0; i < params->count; ++i)
3400 {
3401 sockets[i].socket = params->sockets[i].socket;
3402 sockets[i].flags = params->sockets[i].flags;
3403 sockets[i].status = params->sockets[i].status;
3404 }
3405
3406 poll_socket( sock, async, params->exclusive, params->timeout, params->count, sockets );
3407 free( sockets );
3408 }
3409
3410 return;
3411 }
3412
3413 default:
3414 set_error( STATUS_NOT_SUPPORTED );
3415 return;
3416 }
3417 }
3418
3419 static void handle_exclusive_poll(struct poll_req *req)
3420 {
3421 unsigned int i;
3422
3423 for (i = 0; i < req->count; ++i)
3424 {
3425 struct sock *sock = req->sockets[i].sock;
3426 struct poll_req *main_poll = sock->main_poll;
3427
3428 if (main_poll && main_poll->exclusive && req->exclusive)
3429 {
3430 complete_async_poll( main_poll, STATUS_SUCCESS );
3431 main_poll = NULL;
3432 }
3433
3434 if (!main_poll)
3435 sock->main_poll = req;
3436 }
3437 }
3438
3439 static void poll_socket( struct sock *poll_sock, struct async *async, int exclusive, timeout_t timeout,
3440 unsigned int count, const struct afd_poll_socket_64 *sockets )
3441 {
3442 BOOL signaled = FALSE;
3443 struct poll_req *req;
3444 unsigned int i, j;
3445
3446 if (!count)
3447 {
3448 set_error( STATUS_INVALID_PARAMETER );
3449 return;
3450 }
3451
3452 if (!(req = mem_alloc( offsetof( struct poll_req, sockets[count] ) )))
3453 return;
3454
3455 req->timeout = NULL;
3456 req->pending = 0;
3457 if (timeout && timeout != TIMEOUT_INFINITE &&
3458 !(req->timeout = add_timeout_user( timeout, async_poll_timeout, req )))
3459 {
3460 free( req );
3461 return;
3462 }
3463 req->orig_timeout = timeout;
3464
3465 for (i = 0; i < count; ++i)
3466 {
3467 req->sockets[i].sock = (struct sock *)get_handle_obj( current->process, sockets[i].socket, 0, &sock_ops );
3468 if (!req->sockets[i].sock)
3469 {
3470 for (j = 0; j < i; ++j) release_object( req->sockets[j].sock );
3471 if (req->timeout) remove_timeout_user( req->timeout );
3472 free( req );
3473 return;
3474 }
3475 req->sockets[i].handle = sockets[i].socket;
3476 req->sockets[i].mask = sockets[i].flags;
3477 req->sockets[i].flags = 0;
3478 }
3479
3480 req->exclusive = exclusive;
3481 req->count = count;
3482 req->async = (struct async *)grab_object( async );
3483 req->iosb = async_get_iosb( async );
3484
3485 handle_exclusive_poll(req);
3486
3487 list_add_tail( &poll_list, &req->entry );
3488 async_set_completion_callback( async, free_poll_req, req );
3489 queue_async( &poll_sock->poll_q, async );
3490
3491 for (i = 0; i < count; ++i)
3492 {
3493 struct sock *sock = req->sockets[i].sock;
3494 int mask = req->sockets[i].mask;
3495 struct pollfd pollfd;
3496
3497 pollfd.fd = get_unix_fd( sock->fd );
3498 pollfd.events = poll_flags_from_afd( sock, mask );
3499 if (pollfd.events >= 0 && poll( &pollfd, 1, 0 ) >= 0)
3500 sock_poll_event( sock->fd, pollfd.revents );
3501
3502 /* FIXME: do other error conditions deserve a similar treatment? */
3503 if (sock->state != SOCK_CONNECTING && sock->errors[AFD_POLL_BIT_CONNECT_ERR] && (mask & AFD_POLL_CONNECT_ERR))
3504 {
3505 req->sockets[i].flags |= AFD_POLL_CONNECT_ERR;
3506 req->sockets[i].status = sock_get_ntstatus( sock->errors[AFD_POLL_BIT_CONNECT_ERR] );
3507 }
3508
3509 if (req->sockets[i].flags)
3510 signaled = TRUE;
3511 }
3512
3513 if (!timeout || signaled)
3514 complete_async_poll( req, STATUS_SUCCESS );
3515 else
3516 req->pending = 1;
3517
3518 for (i = 0; i < req->count; ++i)
3519 sock_reselect( req->sockets[i].sock );
3520 set_error( STATUS_PENDING );
3521 }
3522
3523 #ifdef HAVE_LINUX_RTNETLINK_H
3524
3525 /* only keep one ifchange object around, all sockets waiting for wakeups will look to it */
3526 static struct object *ifchange_object;
3527
3528 static void ifchange_dump( struct object *obj, int verbose );
3529 static struct fd *ifchange_get_fd( struct object *obj );
3530 static void ifchange_destroy( struct object *obj );
3531
3532 static int ifchange_get_poll_events( struct fd *fd );
3533 static void ifchange_poll_event( struct fd *fd, int event );
3534
3535 struct ifchange
3536 {
3537 struct object obj; /* object header */
3538 struct fd *fd; /* interface change file descriptor */
3539 struct list sockets; /* list of sockets to send interface change notifications */
3540 };
3541
3542 static const struct object_ops ifchange_ops =
3543 {
3544 sizeof(struct ifchange), /* size */
3545 &no_type, /* type */
3546 ifchange_dump, /* dump */
3547 no_add_queue, /* add_queue */
3548 NULL, /* remove_queue */
3549 NULL, /* signaled */
3550 no_satisfied, /* satisfied */
3551 no_signal, /* signal */
3552 ifchange_get_fd, /* get_fd */
3553 default_map_access, /* map_access */
3554 default_get_sd, /* get_sd */
3555 default_set_sd, /* set_sd */
3556 no_get_full_name, /* get_full_name */
3557 no_lookup_name, /* lookup_name */
3558 no_link_name, /* link_name */
3559 NULL, /* unlink_name */
3560 no_open_file, /* open_file */
3561 no_kernel_obj_list, /* get_kernel_obj_list */
3562 no_close_handle, /* close_handle */
3563 ifchange_destroy /* destroy */
3564 };
3565
3566 static const struct fd_ops ifchange_fd_ops =
3567 {
3568 ifchange_get_poll_events, /* get_poll_events */
3569 ifchange_poll_event, /* poll_event */
3570 NULL, /* get_fd_type */
3571 no_fd_read, /* read */
3572 no_fd_write, /* write */
3573 no_fd_flush, /* flush */
3574 no_fd_get_file_info, /* get_file_info */
3575 no_fd_get_volume_info, /* get_volume_info */
3576 no_fd_ioctl, /* ioctl */
3577 NULL, /* cancel_async */
3578 NULL, /* queue_async */
3579 NULL /* reselect_async */
3580 };
3581
3582 static void ifchange_dump( struct object *obj, int verbose )
3583 {
3584 assert( obj->ops == &ifchange_ops );
3585 fprintf( stderr, "Interface change\n" );
3586 }
3587
3588 static struct fd *ifchange_get_fd( struct object *obj )
3589 {
3590 struct ifchange *ifchange = (struct ifchange *)obj;
3591 return (struct fd *)grab_object( ifchange->fd );
3592 }
3593
3594 static void ifchange_destroy( struct object *obj )
3595 {
3596 struct ifchange *ifchange = (struct ifchange *)obj;
3597 assert( obj->ops == &ifchange_ops );
3598
3599 release_object( ifchange->fd );
3600
3601 /* reset the global ifchange object so that it will be recreated if it is needed again */
3602 assert( obj == ifchange_object );
3603 ifchange_object = NULL;
3604 }
3605
3606 static int ifchange_get_poll_events( struct fd *fd )
3607 {
3608 return POLLIN;
3609 }
3610
3611 /* wake up all the sockets waiting for a change notification event */
3612 static void ifchange_wake_up( struct object *obj, unsigned int status )
3613 {
3614 struct ifchange *ifchange = (struct ifchange *)obj;
3615 struct list *ptr, *next;
3616 assert( obj->ops == &ifchange_ops );
3617 assert( obj == ifchange_object );
3618
3619 LIST_FOR_EACH_SAFE( ptr, next, &ifchange->sockets )
3620 {
3621 struct sock *sock = LIST_ENTRY( ptr, struct sock, ifchange_entry );
3622
3623 assert( sock->ifchange_obj );
3624 async_wake_up( &sock->ifchange_q, status ); /* issue ifchange notification for the socket */
3625 sock_release_ifchange( sock ); /* remove socket from list and decrement ifchange refcount */
3626 }
3627 }
3628
3629 static void ifchange_poll_event( struct fd *fd, int event )
3630 {
3631 struct object *ifchange = get_fd_user( fd );
3632 unsigned int status = STATUS_PENDING;
3633 char buffer[PIPE_BUF];
3634 int r;
3635
3636 r = recv( get_unix_fd(fd), buffer, sizeof(buffer), MSG_DONTWAIT );
3637 if (r < 0)
3638 {
3639 if (errno == EWOULDBLOCK || (EWOULDBLOCK != EAGAIN && errno == EAGAIN))
3640 return; /* retry when poll() says the socket is ready */
3641 status = sock_get_ntstatus( errno );
3642 }
3643 else if (r > 0)
3644 {
3645 struct nlmsghdr *nlh;
3646
3647 for (nlh = (struct nlmsghdr *)buffer; NLMSG_OK(nlh, r); nlh = NLMSG_NEXT(nlh, r))
3648 {
3649 if (nlh->nlmsg_type == NLMSG_DONE)
3650 break;
3651 if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR)
3652 status = STATUS_SUCCESS;
3653 }
3654 }
3655 else status = STATUS_CANCELLED;
3656
3657 if (status != STATUS_PENDING) ifchange_wake_up( ifchange, status );
3658 }
3659
3660 #endif
3661
3662 /* we only need one of these interface notification objects, all of the sockets dependent upon
3663 * it will wake up when a notification event occurs */
3664 static struct object *get_ifchange( void )
3665 {
3666 #ifdef HAVE_LINUX_RTNETLINK_H
3667 struct ifchange *ifchange;
3668 struct sockaddr_nl addr;
3669 int unix_fd;
3670
3671 if (ifchange_object)
3672 {
3673 /* increment the refcount for each socket that uses the ifchange object */
3674 return grab_object( ifchange_object );
3675 }
3676
3677 /* create the socket we need for processing interface change notifications */
3678 unix_fd = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE );
3679 if (unix_fd == -1)
3680 {
3681 set_error( sock_get_ntstatus( errno ));
3682 return NULL;
3683 }
3684 fcntl( unix_fd, F_SETFL, O_NONBLOCK ); /* make socket nonblocking */
3685 memset( &addr, 0, sizeof(addr) );
3686 addr.nl_family = AF_NETLINK;
3687 addr.nl_groups = RTMGRP_IPV4_IFADDR;
3688 /* bind the socket to the special netlink kernel interface */
3689 if (bind( unix_fd, (struct sockaddr *)&addr, sizeof(addr) ) == -1)
3690 {
3691 close( unix_fd );
3692 set_error( sock_get_ntstatus( errno ));
3693 return NULL;
3694 }
3695 if (!(ifchange = alloc_object( &ifchange_ops )))
3696 {
3697 close( unix_fd );
3698 set_error( STATUS_NO_MEMORY );
3699 return NULL;
3700 }
3701 list_init( &ifchange->sockets );
3702 if (!(ifchange->fd = create_anonymous_fd( &ifchange_fd_ops, unix_fd, &ifchange->obj, 0 )))
3703 {
3704 release_object( ifchange );
3705 set_error( STATUS_NO_MEMORY );
3706 return NULL;
3707 }
3708 set_fd_events( ifchange->fd, POLLIN ); /* enable read wakeup on the file descriptor */
3709
3710 /* the ifchange object is now successfully configured */
3711 ifchange_object = &ifchange->obj;
3712 return &ifchange->obj;
3713 #else
3714 set_error( STATUS_NOT_SUPPORTED );
3715 return NULL;
3716 #endif
3717 }
3718
3719 /* add the socket to the interface change notification list */
3720 static void ifchange_add_sock( struct object *obj, struct sock *sock )
3721 {
3722 #ifdef HAVE_LINUX_RTNETLINK_H
3723 struct ifchange *ifchange = (struct ifchange *)obj;
3724
3725 list_add_tail( &ifchange->sockets, &sock->ifchange_entry );
3726 #endif
3727 }
3728
3729 /* create a new ifchange queue for a specific socket or, if one already exists, reuse the existing one */
3730 static struct object *sock_get_ifchange( struct sock *sock )
3731 {
3732 struct object *ifchange;
3733
3734 if (sock->ifchange_obj) /* reuse existing ifchange_obj for this socket */
3735 return sock->ifchange_obj;
3736
3737 if (!(ifchange = get_ifchange()))
3738 return NULL;
3739
3740 /* add the socket to the ifchange notification list */
3741 ifchange_add_sock( ifchange, sock );
3742 sock->ifchange_obj = ifchange;
3743 return ifchange;
3744 }
3745
3746 /* destroy an existing ifchange queue for a specific socket */
3747 static void sock_release_ifchange( struct sock *sock )
3748 {
3749 if (sock->ifchange_obj)
3750 {
3751 list_remove( &sock->ifchange_entry );
3752 release_object( sock->ifchange_obj );
3753 sock->ifchange_obj = NULL;
3754 }
3755 }
3756
3757 static void socket_device_dump( struct object *obj, int verbose );
3758 static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
3759 unsigned int attr, struct object *root );
3760 static struct object *socket_device_open_file( struct object *obj, unsigned int access,
3761 unsigned int sharing, unsigned int options );
3762
3763 static const struct object_ops socket_device_ops =
3764 {
3765 sizeof(struct object), /* size */
3766 &device_type, /* type */
3767 socket_device_dump, /* dump */
3768 no_add_queue, /* add_queue */
3769 NULL, /* remove_queue */
3770 NULL, /* signaled */
3771 no_satisfied, /* satisfied */
3772 no_signal, /* signal */
3773 no_get_fd, /* get_fd */
3774 default_map_access, /* map_access */
3775 default_get_sd, /* get_sd */
3776 default_set_sd, /* set_sd */
3777 default_get_full_name, /* get_full_name */
3778 socket_device_lookup_name, /* lookup_name */
3779 directory_link_name, /* link_name */
3780 default_unlink_name, /* unlink_name */
3781 socket_device_open_file, /* open_file */
3782 no_kernel_obj_list, /* get_kernel_obj_list */
3783 no_close_handle, /* close_handle */
3784 no_destroy /* destroy */
3785 };
3786
3787 static void socket_device_dump( struct object *obj, int verbose )
3788 {
3789 fputs( "Socket device\n", stderr );
3790 }
3791
3792 static struct object *socket_device_lookup_name( struct object *obj, struct unicode_str *name,
3793 unsigned int attr, struct object *root )
3794 {
3795 if (name) name->len = 0;
3796 return NULL;
3797 }
3798
3799 static struct object *socket_device_open_file( struct object *obj, unsigned int access,
3800 unsigned int sharing, unsigned int options )
3801 {
3802 struct sock *sock;
3803
3804 if (!(sock = create_socket())) return NULL;
3805 if (!(sock->fd = alloc_pseudo_fd( &sock_fd_ops, &sock->obj, options )))
3806 {
3807 release_object( sock );
3808 return NULL;
3809 }
3810 return &sock->obj;
3811 }
3812
3813 struct object *create_socket_device( struct object *root, const struct unicode_str *name,
3814 unsigned int attr, const struct security_descriptor *sd )
3815 {
3816 return create_named_object( root, &socket_device_ops, name, attr, sd );
3817 }
3818
3819 DECL_HANDLER(recv_socket)
3820 {
3821 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->async.handle, 0, &sock_ops );
3822 unsigned int status = STATUS_PENDING;
3823 timeout_t timeout = 0;
3824 struct async *async;
3825 struct fd *fd;
3826
3827 if (!sock) return;
3828 fd = sock->fd;
3829
3830 if (!req->force_async && !sock->nonblocking && is_fd_overlapped( fd ))
3831 timeout = (timeout_t)sock->rcvtimeo * -10000;
3832
3833 if (sock->rd_shutdown) status = STATUS_PIPE_DISCONNECTED;
3834 else if (!async_queued( &sock->read_q ))
3835 {
3836 /* If read_q is not empty, we cannot really tell if the already queued
3837 * asyncs will not consume all available data; if there's no data
3838 * available, the current request won't be immediately satiable.
3839 */
3840 if ((!req->force_async && sock->nonblocking) ||
3841 check_fd_events( sock->fd, req->oob && !is_oobinline( sock ) ? POLLPRI : POLLIN ))
3842 {
3843 /* Give the client opportunity to complete synchronously.
3844 * If it turns out that the I/O request is not actually immediately satiable,
3845 * the client may then choose to re-queue the async (with STATUS_PENDING).
3846 *
3847 * Note: If the nonblocking flag is set, we don't poll the socket
3848 * here and always opt for synchronous completion first. This is
3849 * because the application has probably seen POLLIN already from a
3850 * preceding select()/poll() call before it requested to receive
3851 * data.
3852 */
3853 status = STATUS_ALERTED;
3854 }
3855 }
3856
3857 if (status == STATUS_PENDING && !req->force_async && sock->nonblocking)
3858 status = STATUS_DEVICE_NOT_READY;
3859
3860 sock->pending_events &= ~(req->oob ? AFD_POLL_OOB : AFD_POLL_READ);
3861 sock->reported_events &= ~(req->oob ? AFD_POLL_OOB : AFD_POLL_READ);
3862
3863 if ((async = create_request_async( fd, get_fd_comp_flags( fd ), &req->async )))
3864 {
3865 set_error( status );
3866
3867 if (timeout)
3868 async_set_timeout( async, timeout, STATUS_IO_TIMEOUT );
3869
3870 if (status == STATUS_PENDING || status == STATUS_ALERTED)
3871 queue_async( &sock->read_q, async );
3872
3873 /* always reselect; we changed reported_events above */
3874 sock_reselect( sock );
3875
3876 reply->wait = async_handoff( async, NULL, 0 );
3877 reply->options = get_fd_options( fd );
3878 reply->nonblocking = sock->nonblocking;
3879 release_object( async );
3880 }
3881 release_object( sock );
3882 }
3883
3884 static void send_socket_completion_callback( void *private )
3885 {
3886 struct send_req *send_req = private;
3887 struct iosb *iosb = send_req->iosb;
3888 struct sock *sock = send_req->sock;
3889
3890 if (iosb->status != STATUS_SUCCESS)
3891 {
3892 /* send() calls only clear and reselect events if unsuccessful. */
3893 sock->pending_events &= ~AFD_POLL_WRITE;
3894 sock->reported_events &= ~AFD_POLL_WRITE;
3895 sock_reselect( sock );
3896 }
3897
3898 release_object( iosb );
3899 release_object( sock );
3900 free( send_req );
3901 }
3902
3903 DECL_HANDLER(send_socket)
3904 {
3905 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->async.handle, 0, &sock_ops );
3906 unsigned int status = STATUS_PENDING;
3907 timeout_t timeout = 0;
3908 struct async *async;
3909 struct fd *fd;
3910 int bind_errno = 0;
3911
3912 if (!sock) return;
3913 fd = sock->fd;
3914
3915 if (sock->type == WS_SOCK_DGRAM && !sock->bound)
3916 {
3917 union unix_sockaddr unix_addr;
3918 socklen_t unix_len;
3919 int unix_fd = get_unix_fd( fd );
3920
3921 unix_len = get_unix_sockaddr_any( &unix_addr, sock->family );
3922 if (bind( unix_fd, &unix_addr.addr, unix_len ) < 0)
3923 bind_errno = errno;
3924
3925 if (getsockname( unix_fd, &unix_addr.addr, &unix_len ) >= 0)
3926 {
3927 sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) );
3928 sock->bound = 1;
3929 }
3930 else if (!bind_errno) bind_errno = errno;
3931 }
3932
3933 if (!req->force_async && !sock->nonblocking && is_fd_overlapped( fd ))
3934 timeout = (timeout_t)sock->sndtimeo * -10000;
3935
3936 if (bind_errno) status = sock_get_ntstatus( bind_errno );
3937 else if (sock->wr_shutdown) status = STATUS_PIPE_DISCONNECTED;
3938 else if (!async_queued( &sock->write_q ))
3939 {
3940 /* If write_q is not empty, we cannot really tell if the already queued
3941 * asyncs will not consume all available space; if there's no space
3942 * available, the current request won't be immediately satiable.
3943 */
3944 if ((!req->force_async && sock->nonblocking) || check_fd_events( sock->fd, POLLOUT ))
3945 {
3946 /* Give the client opportunity to complete synchronously.
3947 * If it turns out that the I/O request is not actually immediately satiable,
3948 * the client may then choose to re-queue the async (with STATUS_PENDING).
3949 *
3950 * Note: If the nonblocking flag is set, we don't poll the socket
3951 * here and always opt for synchronous completion first. This is
3952 * because the application has probably seen POLLOUT already from a
3953 * preceding select()/poll() call before it requested to send data.
3954 *
3955 * Furthermore, some applications expect that any send() call on a
3956 * socket that has indicated POLLOUT beforehand never fails with
3957 * WSAEWOULDBLOCK. It's possible that Linux poll() may yield
3958 * POLLOUT on the first call but not the second, even if no send()
3959 * call has been made in the meanwhile. This can happen for a
3960 * number of reasons; for example, TCP fragmentation may consume
3961 * extra buffer space for each packet that has been split out, or
3962 * the TCP/IP networking stack may decide to shrink the send buffer
3963 * due to memory pressure.
3964 */
3965 status = STATUS_ALERTED;
3966 }
3967 }
3968
3969 if (status == STATUS_PENDING && !req->force_async && sock->nonblocking)
3970 status = STATUS_DEVICE_NOT_READY;
3971
3972 if ((async = create_request_async( fd, get_fd_comp_flags( fd ), &req->async )))
3973 {
3974 struct send_req *send_req;
3975 struct iosb *iosb = async_get_iosb( async );
3976
3977 if ((send_req = mem_alloc( sizeof(*send_req) )))
3978 {
3979 send_req->iosb = (struct iosb *)grab_object( iosb );
3980 send_req->sock = (struct sock *)grab_object( sock );
3981 async_set_completion_callback( async, send_socket_completion_callback, send_req );
3982 }
3983 else if (status == STATUS_PENDING || status == STATUS_DEVICE_NOT_READY)
3984 status = STATUS_NO_MEMORY;
3985
3986 release_object( iosb );
3987
3988 set_error( status );
3989
3990 if (timeout)
3991 async_set_timeout( async, timeout, STATUS_IO_TIMEOUT );
3992
3993 if (status == STATUS_PENDING || status == STATUS_ALERTED)
3994 {
3995 queue_async( &sock->write_q, async );
3996 sock_reselect( sock );
3997 }
3998
3999 reply->wait = async_handoff( async, NULL, 0 );
4000 reply->options = get_fd_options( fd );
4001 reply->nonblocking = sock->nonblocking;
4002 release_object( async );
4003 }
4004 release_object( sock );
4005 }
4006
4007 DECL_HANDLER(socket_get_events)
4008 {
4009 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->handle, 0, &sock_ops );
4010 unsigned int status[13];
4011 struct event *event = NULL;
4012 unsigned int i;
4013
4014 if (get_reply_max_size() < sizeof(status))
4015 {
4016 set_error( STATUS_INVALID_PARAMETER );
4017 return;
4018 }
4019
4020 if (!sock) return;
4021
4022 if (req->event)
4023 {
4024 if (!(event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE )))
4025 {
4026 release_object( sock );
4027 return;
4028 }
4029 }
4030
4031 reply->flags = sock->pending_events & sock->mask;
4032 for (i = 0; i < ARRAY_SIZE( status ); ++i)
4033 status[i] = sock_get_ntstatus( sock->errors[i] );
4034
4035 sock->pending_events &= ~sock->mask;
4036 sock_reselect( sock );
4037
4038 if (event)
4039 {
4040 reset_event( event );
4041 release_object( event );
4042 }
4043
4044 set_reply_data( status, sizeof(status) );
4045
4046 release_object( sock );
4047 }
4048
4049 DECL_HANDLER(socket_send_icmp_id)
4050 {
4051 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->handle, 0, &sock_ops );
4052
4053 if (!sock) return;
4054
4055 if (sock->icmp_fixup_data_len == MAX_ICMP_HISTORY_LENGTH)
4056 {
4057 memmove( sock->icmp_fixup_data, sock->icmp_fixup_data + 1,
4058 sizeof(*sock->icmp_fixup_data) * (MAX_ICMP_HISTORY_LENGTH - 1) );
4059 --sock->icmp_fixup_data_len;
4060 }
4061
4062 sock->icmp_fixup_data[sock->icmp_fixup_data_len].icmp_id = req->icmp_id;
4063 sock->icmp_fixup_data[sock->icmp_fixup_data_len].icmp_seq = req->icmp_seq;
4064 ++sock->icmp_fixup_data_len;
4065
4066 release_object( sock );
4067 }
4068
4069 DECL_HANDLER(socket_get_icmp_id)
4070 {
4071 struct sock *sock = (struct sock *)get_handle_obj( current->process, req->handle, 0, &sock_ops );
4072 unsigned int i;
4073
4074 if (!sock) return;
4075
4076 for (i = 0; i < sock->icmp_fixup_data_len; ++i)
4077 {
4078 if (sock->icmp_fixup_data[i].icmp_seq == req->icmp_seq)
4079 {
4080 reply->icmp_id = sock->icmp_fixup_data[i].icmp_id;
4081 --sock->icmp_fixup_data_len;
4082 memmove( &sock->icmp_fixup_data[i], &sock->icmp_fixup_data[i + 1],
4083 (sock->icmp_fixup_data_len - i) * sizeof(*sock->icmp_fixup_data) );
4084 release_object( sock );
4085 return;
4086 }
4087 }
4088
4089 set_error( STATUS_NOT_FOUND );
4090 release_object( sock );
4091 }
Windows API implementation