2 * Server-side socket management
4 * Copyright (C) 1999 Marcus Meissner, Ove Kåven
6 * FIXME: we use read|write access in all cases. Shouldn't we depend that
7 * on the access of the current handle?
18 #ifdef HAVE_SYS_ERRNO_H
19 # include <sys/errno.h>
22 #include <sys/types.h>
23 #ifdef HAVE_SYS_SOCKET_H
24 # include <sys/socket.h>
26 #include <sys/ioctl.h>
27 #ifdef HAVE_SYS_FILIO_H
28 # include <sys/filio.h>
43 struct object obj; /* object header */
44 unsigned int state; /* status bits */
45 unsigned int mask; /* event mask */
46 unsigned int hmask; /* held (blocked) events */
47 unsigned int pmask; /* pending events */
48 struct event *event; /* event object */
49 int errors[FD_MAX_EVENTS]; /* event errors */
52 static void sock_dump( struct object *obj, int verbose );
53 static int sock_signaled( struct object *obj, struct thread *thread );
54 static int sock_get_poll_events( struct object *obj );
55 static void sock_poll_event( struct object *obj, int event );
56 static int sock_get_fd( struct object *obj );
57 static int sock_get_info( struct object *obj, struct get_file_info_request *req );
58 static void sock_destroy( struct object *obj );
59 static int sock_get_error( int err );
60 static void sock_set_error(void);
62 static const struct object_ops sock_ops =
64 sizeof(struct sock), /* size */
66 add_queue, /* add_queue */
67 remove_queue, /* remove_queue */
68 sock_signaled, /* signaled */
69 no_satisfied, /* satisfied */
70 sock_get_poll_events, /* get_poll_events */
71 sock_poll_event, /* poll_event */
72 sock_get_fd, /* get_fd */
74 sock_get_info, /* get_file_info */
75 sock_destroy /* destroy */
78 static void sock_reselect( struct sock *sock )
80 int ev = sock_get_poll_events( &sock->obj );
84 fprintf(stderr,"sock_reselect(%d): new mask %x\n", sock->obj.fd, ev);
86 if (sock->obj.select == -1) {
87 /* previously unconnected socket, is this reselect supposed to connect it? */
88 if (!(sock->state & ~FD_WINE_NONBLOCKING)) return;
89 /* ok, it is, attach it to the wineserver's main poll loop */
90 add_select_user( &sock->obj );
92 /* update condition mask */
93 set_select_events( &sock->obj, ev );
95 /* check whether condition is satisfied already */
96 pfd.fd = sock->obj.fd;
101 sock_poll_event( &sock->obj, pfd.revents);
104 inline static int sock_error(int s)
106 unsigned int optval = 0, optlen;
108 optlen = sizeof(optval);
109 getsockopt(s, SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
110 return optval ? sock_get_error(optval) : 0;
113 static void sock_poll_event( struct object *obj, int event )
115 struct sock *sock = (struct sock *)obj;
117 assert( sock->obj.ops == &sock_ops );
119 fprintf(stderr, "socket %d select event: %x\n", sock->obj.fd, event);
120 if (sock->state & FD_CONNECT)
125 /* we got connected */
126 sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
127 sock->state &= ~FD_CONNECT;
128 sock->pmask |= FD_CONNECT;
129 sock->errors[FD_CONNECT_BIT] = 0;
131 fprintf(stderr, "socket %d connection success\n", sock->obj.fd);
133 else if (event & (POLLERR|POLLHUP))
135 /* we didn't get connected? */
136 sock->state &= ~FD_CONNECT;
137 sock->pmask |= FD_CONNECT;
138 sock->errors[FD_CONNECT_BIT] = sock_error( sock->obj.fd );
140 fprintf(stderr, "socket %d connection failure\n", sock->obj.fd);
143 if (sock->state & FD_WINE_LISTENING)
148 /* incoming connection */
149 sock->pmask |= FD_ACCEPT;
150 sock->errors[FD_ACCEPT_BIT] = 0;
151 sock->hmask |= FD_ACCEPT;
153 else if (event & (POLLERR|POLLHUP))
155 /* failed incoming connection? */
156 sock->pmask |= FD_ACCEPT;
157 sock->errors[FD_ACCEPT_BIT] = sock_error( sock->obj.fd );
158 sock->hmask |= FD_ACCEPT;
162 /* normal data flow */
167 /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
168 * has been closed, so we need to check for it explicitly here */
169 if (!recv( sock->obj.fd, &dummy, 1, MSG_PEEK )) event = POLLHUP;
173 sock->pmask |= FD_READ;
174 sock->hmask |= FD_READ;
175 sock->errors[FD_READ_BIT] = 0;
177 fprintf(stderr, "socket %d is readable\n", sock->obj.fd );
182 sock->pmask |= FD_WRITE;
183 sock->hmask |= FD_WRITE;
184 sock->errors[FD_WRITE_BIT] = 0;
186 fprintf(stderr, "socket %d is writable\n", sock->obj.fd);
190 sock->pmask |= FD_OOB;
191 sock->hmask |= FD_OOB;
192 sock->errors[FD_OOB_BIT] = 0;
194 fprintf(stderr, "socket %d got OOB data\n", sock->obj.fd);
196 if (((event & POLLERR) || ((event & (POLLIN|POLLHUP)) == POLLHUP))
197 && (sock->state & (FD_READ|FD_WRITE))) {
199 sock->errors[FD_CLOSE_BIT] = sock_error( sock->obj.fd );
200 sock->state &= ~(FD_WINE_CONNECTED|FD_READ|FD_WRITE);
201 sock->pmask |= FD_CLOSE;
203 fprintf(stderr, "socket %d aborted by error %d\n",
204 sock->obj.fd, sock->errors[FD_CLOSE_BIT]);
208 if (event & (POLLERR|POLLHUP))
209 set_select_events( &sock->obj, -1 );
211 sock_reselect( sock );
212 /* wake up anyone waiting for whatever just happened */
213 emask = sock->pmask & sock->mask;
214 if (debug_level && emask)
215 fprintf(stderr, "socket %d pending events: %x\n", sock->obj.fd, emask);
216 if (emask && sock->event) {
217 if (debug_level) fprintf(stderr, "signalling event ptr %p\n", sock->event);
218 set_event(sock->event);
221 /* if anyone is stupid enough to wait on the socket object itself,
222 * maybe we should wake them up too, just in case? */
223 wake_up( &sock->obj, 0 );
226 static void sock_dump( struct object *obj, int verbose )
228 struct sock *sock = (struct sock *)obj;
229 assert( obj->ops == &sock_ops );
230 printf( "Socket fd=%d, state=%x, mask=%x, pending=%x, held=%x\n",
231 sock->obj.fd, sock->state,
232 sock->mask, sock->pmask, sock->hmask );
235 static int sock_signaled( struct object *obj, struct thread *thread )
237 struct sock *sock = (struct sock *)obj;
238 assert( obj->ops == &sock_ops );
240 return check_select_events( sock->obj.fd, sock_get_poll_events( &sock->obj ) );
243 static int sock_get_poll_events( struct object *obj )
245 struct sock *sock = (struct sock *)obj;
246 unsigned int mask = sock->mask & sock->state & ~sock->hmask;
249 assert( obj->ops == &sock_ops );
251 if (sock->state & FD_CONNECT)
252 /* connecting, wait for writable */
254 if (sock->state & FD_WINE_LISTENING)
255 /* listening, wait for readable */
256 return (sock->hmask & FD_ACCEPT) ? 0 : POLLIN;
258 if (mask & FD_READ) ev |= POLLIN | POLLPRI;
259 if (mask & FD_WRITE) ev |= POLLOUT;
263 static int sock_get_fd( struct object *obj )
265 struct sock *sock = (struct sock *)obj;
266 assert( obj->ops == &sock_ops );
270 static int sock_get_info( struct object *obj, struct get_file_info_request *req )
274 req->type = FILE_TYPE_PIPE;
276 req->access_time = 0;
285 return FD_TYPE_DEFAULT;
288 static void sock_destroy( struct object *obj )
290 struct sock *sock = (struct sock *)obj;
291 assert( obj->ops == &sock_ops );
293 /* FIXME: special socket shutdown stuff? */
296 /* if the service thread was waiting for the event object,
297 * we should now signal it, to let the service thread
298 * object detect that it is now orphaned... */
299 if (sock->mask & FD_WINE_SERVEVENT)
300 set_event( sock->event );
301 /* we're through with it */
302 release_object( sock->event );
306 /* create a new and unconnected socket */
307 static struct object *create_socket( int family, int type, int protocol )
312 sockfd = socket( family, type, protocol );
314 fprintf(stderr,"socket(%d,%d,%d)=%d\n",family,type,protocol,sockfd);
319 fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
320 if (!(sock = alloc_object( &sock_ops, -1 ))) return NULL;
321 sock->obj.fd = sockfd;
322 sock->state = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
327 sock_reselect( sock );
332 /* accept a socket (creates a new fd) */
333 static struct object *accept_socket( handle_t handle )
335 struct sock *acceptsock;
338 struct sockaddr saddr;
341 sock=(struct sock*)get_handle_obj(current->process,handle,
342 GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
345 /* Try to accept(2). We can't be safe that this an already connected socket
346 * or that accept() is allowed on it. In those cases we will get -1/errno
349 slen = sizeof(saddr);
350 acceptfd = accept(sock->obj.fd,&saddr,&slen);
353 release_object( sock );
356 if (!(acceptsock = alloc_object( &sock_ops, -1 )))
358 release_object( sock );
362 /* newly created socket gets the same properties of the listening socket */
363 fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
364 acceptsock->obj.fd = acceptfd;
365 acceptsock->state = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
366 if (sock->state & FD_WINE_NONBLOCKING)
367 acceptsock->state |= FD_WINE_NONBLOCKING;
368 acceptsock->mask = sock->mask;
369 acceptsock->hmask = 0;
370 acceptsock->pmask = 0;
371 acceptsock->event = NULL;
372 if (sock->event && !(sock->mask & FD_WINE_SERVEVENT))
373 acceptsock->event = (struct event *)grab_object( sock->event );
375 sock_reselect( acceptsock );
377 sock->pmask &= ~FD_ACCEPT;
378 sock->hmask &= ~FD_ACCEPT;
379 sock_reselect( sock );
380 release_object( sock );
381 return &acceptsock->obj;
384 /* set the last error depending on errno */
385 static int sock_get_error( int err )
389 case EINTR: return WSAEINTR; break;
390 case EBADF: return WSAEBADF; break;
392 case EACCES: return WSAEACCES; break;
393 case EFAULT: return WSAEFAULT; break;
394 case EINVAL: return WSAEINVAL; break;
395 case EMFILE: return WSAEMFILE; break;
396 case EWOULDBLOCK: return WSAEWOULDBLOCK; break;
397 case EINPROGRESS: return WSAEINPROGRESS; break;
398 case EALREADY: return WSAEALREADY; break;
399 case ENOTSOCK: return WSAENOTSOCK; break;
400 case EDESTADDRREQ: return WSAEDESTADDRREQ; break;
401 case EMSGSIZE: return WSAEMSGSIZE; break;
402 case EPROTOTYPE: return WSAEPROTOTYPE; break;
403 case ENOPROTOOPT: return WSAENOPROTOOPT; break;
404 case EPROTONOSUPPORT: return WSAEPROTONOSUPPORT; break;
405 case ESOCKTNOSUPPORT: return WSAESOCKTNOSUPPORT; break;
406 case EOPNOTSUPP: return WSAEOPNOTSUPP; break;
407 case EPFNOSUPPORT: return WSAEPFNOSUPPORT; break;
408 case EAFNOSUPPORT: return WSAEAFNOSUPPORT; break;
409 case EADDRINUSE: return WSAEADDRINUSE; break;
410 case EADDRNOTAVAIL: return WSAEADDRNOTAVAIL; break;
411 case ENETDOWN: return WSAENETDOWN; break;
412 case ENETUNREACH: return WSAENETUNREACH; break;
413 case ENETRESET: return WSAENETRESET; break;
414 case ECONNABORTED: return WSAECONNABORTED; break;
416 case ECONNRESET: return WSAECONNRESET; break;
417 case ENOBUFS: return WSAENOBUFS; break;
418 case EISCONN: return WSAEISCONN; break;
419 case ENOTCONN: return WSAENOTCONN; break;
420 case ESHUTDOWN: return WSAESHUTDOWN; break;
421 case ETOOMANYREFS: return WSAETOOMANYREFS; break;
422 case ETIMEDOUT: return WSAETIMEDOUT; break;
423 case ECONNREFUSED: return WSAECONNREFUSED; break;
424 case ELOOP: return WSAELOOP; break;
425 case ENAMETOOLONG: return WSAENAMETOOLONG; break;
426 case EHOSTDOWN: return WSAEHOSTDOWN; break;
427 case EHOSTUNREACH: return WSAEHOSTUNREACH; break;
428 case ENOTEMPTY: return WSAENOTEMPTY; break;
430 case EPROCLIM: return WSAEPROCLIM; break;
433 case EUSERS: return WSAEUSERS; break;
436 case EDQUOT: return WSAEDQUOT; break;
439 case ESTALE: return WSAESTALE; break;
442 case EREMOTE: return WSAEREMOTE; break;
444 default: errno=err; perror("sock_set_error"); return ERROR_UNKNOWN; break;
448 /* set the last error depending on errno */
449 static void sock_set_error(void)
451 set_error( sock_get_error( errno ) );
454 /* create a socket */
455 DECL_HANDLER(create_socket)
460 if ((obj = create_socket( req->family, req->type, req->protocol )) != NULL)
462 req->handle = alloc_handle( current->process, obj, req->access, req->inherit );
463 release_object( obj );
467 /* accept a socket */
468 DECL_HANDLER(accept_socket)
473 if ((obj = accept_socket( req->lhandle )) != NULL)
475 req->handle = alloc_handle( current->process, obj, req->access, req->inherit );
476 release_object( obj );
480 /* set socket event parameters */
481 DECL_HANDLER(set_socket_event)
484 struct event *oevent;
487 sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
490 oevent = sock->event;
492 sock->mask = req->mask;
493 sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
494 if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
495 sock_reselect( sock );
497 sock->state |= FD_WINE_NONBLOCKING;
499 /* if a network event is pending, signal the event object
500 it is possible that FD_CONNECT or FD_ACCEPT network events has happened
501 before a WSAEventSelect() was done on it.
502 (when dealing with Asynchronous socket) */
503 if (sock->pmask & sock->mask)
504 set_event(sock->event);
508 if ((oevent != sock->event) && (omask & FD_WINE_SERVEVENT))
509 /* if the service thread was waiting for the old event object,
510 * we should now signal it, to let the service thread
511 * object detect that it is now orphaned... */
513 /* we're through with it */
514 release_object( oevent );
516 release_object( &sock->obj );
519 /* get socket event parameters */
520 DECL_HANDLER(get_socket_event)
525 sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
531 set_error(WSAENOTSOCK);
534 req->mask = sock->mask;
535 req->pmask = sock->pmask;
536 req->state = sock->state;
537 size = min( get_req_data_size(req), sizeof(sock->errors) );
538 memcpy( get_req_data(req), sock->errors, size );
539 set_req_data_size( req, size );
545 struct event *sevent = get_event_obj(current->process, req->s_event, 0);
546 if (sevent == sock->event)
548 release_object( sevent );
554 struct event *cevent = get_event_obj(current->process, req->c_event, EVENT_MODIFY_STATE);
555 reset_event( cevent );
556 release_object( cevent );
559 sock_reselect( sock );
561 else set_error(WSAEINVAL);
563 release_object( &sock->obj );
566 /* re-enable pending socket events */
567 DECL_HANDLER(enable_socket_event)
571 sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
574 sock->pmask &= ~req->mask; /* is this safe? */
575 sock->hmask &= ~req->mask;
576 sock->state |= req->sstate;
577 sock->state &= ~req->cstate;
578 sock_reselect( sock );
580 /* service trigger */
581 if (req->mask & FD_WINE_SERVEVENT)
583 sock->pmask |= FD_WINE_SERVEVENT;
585 if (debug_level) fprintf(stderr, "signalling service event ptr %p\n", sock->event);
586 set_event(sock->event);
590 release_object( &sock->obj );