server/sock.c

   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #ifdef HAVE_SYS_ERRNO_H
  33 # include <sys/errno.h>
  34 #endif
  35 #include <sys/time.h>
  36 #include <sys/types.h>
  37 #ifdef HAVE_SYS_SOCKET_H
  38 # include <sys/socket.h>
  39 #endif
  40 #include <sys/ioctl.h>
  41 #ifdef HAVE_SYS_FILIO_H
  42 # include <sys/filio.h>
  43 #endif
  44 #include <time.h>
  45 #include <unistd.h>
  46
  47 #include "winerror.h"
  48 #include "winbase.h"
  49 #include "process.h"
  50 #include "handle.h"
  51 #include "thread.h"
  52 #include "request.h"
  53 #include "user.h"
  54 #include "async.h"
  55
  56 /* To avoid conflicts with the Unix socket headers. Plus we only need a few
  57  * macros anyway.
  58  */
  59 #define USE_WS_PREFIX
  60 #include "winsock2.h"
  61
  62 struct sock
  63 {
  64     struct object       obj;         /* object header */
  65     unsigned int        state;       /* status bits */
  66     unsigned int        mask;        /* event mask */
  67     unsigned int        hmask;       /* held (blocked) events */
  68     unsigned int        pmask;       /* pending events */
  69     unsigned int        flags;       /* socket flags */
  70     struct event       *event;       /* event object */
  71     user_handle_t       window;      /* window to send the message to */
  72     unsigned int        message;     /* message to send */
  73     unsigned int        wparam;      /* message wparam (socket handle) */
  74     int                 errors[FD_MAX_EVENTS]; /* event errors */
  75     struct sock*        deferred;    /* socket that waits for a deferred accept */
  76     struct async_queue  read_q;      /* Queue for asynchronous reads */
  77     struct async_queue  write_q;     /* Queue for asynchronous writes */
  78 };
  79
  80 static void sock_dump( struct object *obj, int verbose );
  81 static int sock_signaled( struct object *obj, struct thread *thread );
  82 static int sock_get_poll_events( struct object *obj );
  83 static void sock_poll_event( struct object *obj, int event );
  84 static int sock_get_fd( struct object *obj );
  85 static int sock_get_info( struct object *obj, struct get_file_info_reply *reply, int *flags );
  86 static void sock_destroy( struct object *obj );
  87 static int sock_get_error( int err );
  88 static void sock_set_error(void);
  89 static void sock_queue_async(struct object *obj, void *ptr, unsigned int status, int type, int count);
  90
  91 static const struct object_ops sock_ops =
  92 {
  93     sizeof(struct sock),          /* size */
  94     sock_dump,                    /* dump */
  95     add_queue,                    /* add_queue */
  96     remove_queue,                 /* remove_queue */
  97     sock_signaled,                /* signaled */
  98     no_satisfied,                 /* satisfied */
  99     sock_get_poll_events,         /* get_poll_events */
 100     sock_poll_event,              /* poll_event */
 101     sock_get_fd,                  /* get_fd */
 102     no_flush,                     /* flush */
 103     sock_get_info,                /* get_file_info */
 104     sock_queue_async,             /* queue_async */
 105     sock_destroy                  /* destroy */
 106 };
 107
 108
 109 /* Permutation of 0..FD_MAX_EVENTS - 1 representing the order in which
 110  * we post messages if there are multiple events.  Used to send
 111  * messages.  The problem is if there is both a FD_CONNECT event and,
 112  * say, an FD_READ event available on the same socket, we want to
 113  * notify the app of the connect event first.  Otherwise it may
 114  * discard the read event because it thinks it hasn't connected yet.
 115  */
 116 static const int event_bitorder[FD_MAX_EVENTS] =
 117 {
 118     FD_CONNECT_BIT,
 119     FD_ACCEPT_BIT,
 120     FD_OOB_BIT,
 121     FD_WRITE_BIT,
 122     FD_READ_BIT,
 123     FD_CLOSE_BIT,
 124     6, 7, 8, 9  /* leftovers */
 125 };
 126
 127
 128 static int sock_reselect( struct sock *sock )
 129 {
 130     int ev = sock_get_poll_events( &sock->obj );
 131
 132     if (debug_level)
 133         fprintf(stderr,"sock_reselect(%d): new mask %x\n", sock->obj.fd, ev);
 134
 135     if (sock->obj.select == -1) {
 136         /* previously unconnected socket, is this reselect supposed to connect it? */
 137         if (!(sock->state & ~FD_WINE_NONBLOCKING)) return 0;
 138         /* ok, it is, attach it to the wineserver's main poll loop */
 139         add_select_user( &sock->obj );
 140     }
 141     /* update condition mask */
 142     set_select_events( &sock->obj, ev );
 143     return ev;
 144 }
 145
 146 /* After POLLHUP is received, the socket will no longer be in the main select loop.
 147    This function is used to signal pending events nevertheless */
 148 static void sock_try_event ( struct sock *sock, int event )
 149 {
 150     struct pollfd pfd;
 151
 152     pfd.fd = sock->obj.fd;
 153     pfd.events = event;
 154     pfd.revents = 0;
 155     poll (&pfd, 1, 0);
 156
 157     if ( pfd.revents )
 158     {
 159         if ( debug_level ) fprintf ( stderr, "sock_try_event: %x\n", pfd.revents );
 160         sock_poll_event ( &sock->obj, pfd.revents );
 161     }
 162 }
 163
 164 /* wake anybody waiting on the socket event or send the associated message */
 165 static void sock_wake_up( struct sock *sock, int pollev )
 166 {
 167     unsigned int events = sock->pmask & sock->mask;
 168     int i;
 169     int async_active = 0;
 170
 171     if ( sock->flags & FD_FLAG_OVERLAPPED )
 172     {
 173         if( pollev & (POLLIN|POLLPRI) && IS_READY( sock->read_q ) )
 174         {
 175             if (debug_level) fprintf ( stderr, "activating read queue for socket %p\n", sock );
 176             async_notify( sock->read_q.head, STATUS_ALERTED );
 177             async_active = 1;
 178         }
 179         if( pollev & POLLOUT && IS_READY( sock->write_q ) )
 180         {
 181             if (debug_level) fprintf ( stderr, "activating write queue for socket %p\n", sock );
 182             async_notify( sock->write_q.head, STATUS_ALERTED );
 183             async_active = 1;
 184         }
 185     }
 186
 187     /* Do not signal events if there are still pending asynchronous IO requests */
 188     /* We need this to delay FD_CLOSE events until all pending overlapped requests are processed */
 189     if ( !events || async_active ) return;
 190
 191     if (events & FD_CLOSE) sock->hmask |= FD_CLOSE;
 192
 193     if (sock->event)
 194     {
 195         if (debug_level) fprintf(stderr, "signalling events %x ptr %p\n", events, sock->event );
 196         set_event( sock->event );
 197     }
 198     if (sock->window)
 199     {
 200         if (debug_level) fprintf(stderr, "signalling events %x win %x\n", events, sock->window );
 201         for (i = 0; i < FD_MAX_EVENTS; i++)
 202         {
 203             int event = event_bitorder[i];
 204             if (sock->pmask & (1 << event))
 205             {
 206                 unsigned int lparam = (1 << event) | (sock->errors[event] << 16);
 207                 post_message( sock->window, sock->message, sock->wparam, lparam );
 208             }
 209         }
 210         sock->pmask = 0;
 211         sock_reselect( sock );
 212     }
 213 }
 214
 215 inline static int sock_error(int s)
 216 {
 217     unsigned int optval = 0, optlen;
 218
 219     optlen = sizeof(optval);
 220     getsockopt(s, SOL_SOCKET, SO_ERROR, (void *) &optval, &optlen);
 221     return optval ? sock_get_error(optval) : 0;
 222 }
 223
 224 static void sock_poll_event( struct object *obj, int event )
 225 {
 226     struct sock *sock = (struct sock *)obj;
 227     int empty_recv = 0;
 228
 229     assert( sock->obj.ops == &sock_ops );
 230     if (debug_level)
 231         fprintf(stderr, "socket %d select event: %x\n", sock->obj.fd, event);
 232     if (sock->state & FD_CONNECT)
 233     {
 234         /* connecting */
 235         if (event & POLLOUT)
 236         {
 237             /* we got connected */
 238             sock->state |= FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 239             sock->state &= ~FD_CONNECT;
 240             sock->pmask |= FD_CONNECT;
 241             sock->errors[FD_CONNECT_BIT] = 0;
 242             if (debug_level)
 243                 fprintf(stderr, "socket %d connection success\n", sock->obj.fd);
 244         }
 245         else if (event & (POLLERR|POLLHUP))
 246         {
 247             /* we didn't get connected? */
 248             sock->state &= ~FD_CONNECT;
 249             sock->pmask |= FD_CONNECT;
 250             sock->errors[FD_CONNECT_BIT] = sock_error( sock->obj.fd );
 251             if (debug_level)
 252                 fprintf(stderr, "socket %d connection failure\n", sock->obj.fd);
 253             set_select_events( &sock->obj, -1 );
 254         }
 255     } else
 256     if (sock->state & FD_WINE_LISTENING)
 257     {
 258         /* listening */
 259         if (event & POLLIN)
 260         {
 261             /* incoming connection */
 262             sock->pmask |= FD_ACCEPT;
 263             sock->errors[FD_ACCEPT_BIT] = 0;
 264             sock->hmask |= FD_ACCEPT;
 265         }
 266         else if (event & (POLLERR|POLLHUP))
 267         {
 268             /* failed incoming connection? */
 269             sock->pmask |= FD_ACCEPT;
 270             sock->errors[FD_ACCEPT_BIT] = sock_error( sock->obj.fd );
 271             sock->hmask |= FD_ACCEPT;
 272             set_select_events( &sock->obj, -1 );
 273         }
 274     } else
 275     {
 276         /* normal data flow */
 277         if (event & POLLIN)
 278         {
 279             char dummy;
 280             int nr;
 281
 282             /* Linux 2.4 doesn't report POLLHUP if only one side of the socket
 283              * has been closed, so we need to check for it explicitly here */
 284             nr  = recv( sock->obj.fd, &dummy, 1, MSG_PEEK );
 285             if ( nr > 0 )
 286             {
 287                 /* incoming data */
 288                 sock->pmask |= FD_READ;
 289                 sock->hmask |= FD_READ;
 290                 sock->errors[FD_READ_BIT] = 0;
 291                 if (debug_level)
 292                     fprintf(stderr, "socket %d is readable\n", sock->obj.fd );
 293             }
 294             else if ( nr == 0 )
 295                 empty_recv = 1;
 296             else
 297             {
 298                 /* EAGAIN can happen if an async recv() falls between the server's poll()
 299                    call and the invocation of this routine */
 300                 if ( errno == EAGAIN )
 301                     event &= ~POLLIN;
 302                 else
 303                 {
 304                     if ( debug_level )
 305                         fprintf ( stderr, "recv error on socket %d: %d\n", sock->obj.fd, errno );
 306                     event = POLLERR;
 307                 }
 308             }
 309
 310         }
 311         if (event & POLLOUT)
 312         {
 313             sock->pmask |= FD_WRITE;
 314             sock->hmask |= FD_WRITE;
 315             sock->errors[FD_WRITE_BIT] = 0;
 316             if (debug_level)
 317                 fprintf(stderr, "socket %d is writable\n", sock->obj.fd);
 318         }
 319         if (event & POLLPRI)
 320         {
 321             sock->pmask |= FD_OOB;
 322             sock->hmask |= FD_OOB;
 323             sock->errors[FD_OOB_BIT] = 0;
 324             if (debug_level)
 325                 fprintf(stderr, "socket %d got OOB data\n", sock->obj.fd);
 326         }
 327         /* According to WS2 specs, FD_CLOSE is only delivered when there is
 328            no more data to be read (i.e. empty_recv = 1) */
 329         else if ( empty_recv && (sock->state & (FD_READ|FD_WRITE) ))
 330         {
 331             sock->errors[FD_CLOSE_BIT] = sock_error( sock->obj.fd );
 332             if ( event & ( POLLERR|POLLHUP ) )
 333                  sock->state &= ~(FD_WINE_CONNECTED|FD_WRITE);
 334             sock->pmask |= FD_CLOSE;
 335             if (debug_level)
 336                 fprintf(stderr, "socket %d aborted by error %d, event: %x - removing from select loop\n",
 337                         sock->obj.fd, sock->errors[FD_CLOSE_BIT], event);
 338             set_select_events( &sock->obj, -1 );
 339         }
 340     }
 341
 342     sock_reselect( sock );
 343
 344     /* wake up anyone waiting for whatever just happened */
 345     if ( sock->pmask & sock->mask || sock->flags & FD_FLAG_OVERLAPPED ) sock_wake_up( sock, event );
 346
 347     /* if anyone is stupid enough to wait on the socket object itself,
 348      * maybe we should wake them up too, just in case? */
 349     wake_up( &sock->obj, 0 );
 350 }
 351
 352 static void sock_dump( struct object *obj, int verbose )
 353 {
 354     struct sock *sock = (struct sock *)obj;
 355     assert( obj->ops == &sock_ops );
 356     printf( "Socket fd=%d, state=%x, mask=%x, pending=%x, held=%x\n",
 357             sock->obj.fd, sock->state,
 358             sock->mask, sock->pmask, sock->hmask );
 359 }
 360
 361 static int sock_signaled( struct object *obj, struct thread *thread )
 362 {
 363     struct sock *sock = (struct sock *)obj;
 364     assert( obj->ops == &sock_ops );
 365
 366     return check_select_events( sock->obj.fd, sock_get_poll_events( &sock->obj ) );
 367 }
 368
 369 static int sock_get_poll_events( struct object *obj )
 370 {
 371     struct sock *sock = (struct sock *)obj;
 372     unsigned int mask = sock->mask & sock->state & ~sock->hmask;
 373     int ev = 0;
 374
 375     assert( obj->ops == &sock_ops );
 376
 377     if (sock->state & FD_CONNECT)
 378         /* connecting, wait for writable */
 379         return POLLOUT;
 380     if (sock->state & FD_WINE_LISTENING)
 381         /* listening, wait for readable */
 382         return (sock->hmask & FD_ACCEPT) ? 0 : POLLIN;
 383
 384     if (mask & (FD_READ) || (sock->flags & WSA_FLAG_OVERLAPPED && IS_READY (sock->read_q)))
 385         ev |= POLLIN | POLLPRI;
 386     if (mask & FD_WRITE || (sock->flags & WSA_FLAG_OVERLAPPED && IS_READY (sock->write_q)))
 387         ev |= POLLOUT;
 388     /* We use POLLIN with 0 bytes recv() as FD_CLOSE indication. */
 389     if (sock->mask & ~sock->hmask & FD_CLOSE && !(sock->hmask & FD_READ) )
 390         ev |= POLLIN;
 391
 392     return ev;
 393 }
 394
 395 static int sock_get_fd( struct object *obj )
 396 {
 397     struct sock *sock = (struct sock *)obj;
 398     assert( obj->ops == &sock_ops );
 399     return sock->obj.fd;
 400 }
 401
 402 static int sock_get_info( struct object *obj, struct get_file_info_reply *reply, int *flags )
 403 {
 404     struct sock *sock = (struct sock*) obj;
 405     assert ( obj->ops == &sock_ops );
 406
 407     if (reply)
 408     {
 409         reply->type        = FILE_TYPE_PIPE;
 410         reply->attr        = 0;
 411         reply->access_time = 0;
 412         reply->write_time  = 0;
 413         reply->size_high   = 0;
 414         reply->size_low    = 0;
 415         reply->links       = 0;
 416         reply->index_high  = 0;
 417         reply->index_low   = 0;
 418         reply->serial      = 0;
 419     }
 420     *flags = 0;
 421     if (sock->flags & WSA_FLAG_OVERLAPPED) *flags |= FD_FLAG_OVERLAPPED;
 422     if ( !(sock->state & FD_READ ) )  *flags |= FD_FLAG_RECV_SHUTDOWN;
 423     if ( !(sock->state & FD_WRITE ) ) *flags |= FD_FLAG_SEND_SHUTDOWN;
 424     return FD_TYPE_DEFAULT;
 425 }
 426
 427 static void sock_queue_async(struct object *obj, void *ptr, unsigned int status, int type, int count)
 428 {
 429     struct sock *sock = (struct sock *)obj;
 430     struct async_queue *q;
 431     struct async *async;
 432     int pollev;
 433
 434     assert( obj->ops == &sock_ops );
 435
 436     if ( !(sock->flags & WSA_FLAG_OVERLAPPED) )
 437     {
 438         set_error ( STATUS_INVALID_HANDLE );
 439         return;
 440     }
 441
 442     switch( type )
 443     {
 444     case ASYNC_TYPE_READ:
 445         q = &sock->read_q;
 446         break;
 447     case ASYNC_TYPE_WRITE:
 448         q = &sock->write_q;
 449         break;
 450     default:
 451         set_error( STATUS_INVALID_PARAMETER );
 452         return;
 453     }
 454
 455     async = find_async ( q, current, ptr );
 456
 457     if ( status == STATUS_PENDING )
 458     {
 459         if ( ( !( sock->state & FD_READ ) && type == ASYNC_TYPE_READ  ) ||
 460              ( !( sock->state & FD_WRITE ) && type == ASYNC_TYPE_WRITE ) )
 461         {
 462             set_error ( STATUS_PIPE_DISCONNECTED );
 463             if ( async ) destroy_async ( async );
 464         }
 465         else
 466         {
 467             if ( !async )
 468                 async = create_async ( obj, current, ptr );
 469             if ( !async )
 470                 return;
 471
 472             async->status = STATUS_PENDING;
 473             if ( !async->q )
 474                 async_insert ( q, async );
 475         }
 476     }
 477     else if ( async ) destroy_async ( async );
 478     else set_error ( STATUS_INVALID_PARAMETER );
 479
 480     pollev = sock_reselect ( sock );
 481     if ( pollev ) sock_try_event ( sock, pollev );
 482 }
 483
 484 static void sock_destroy( struct object *obj )
 485 {
 486     struct sock *sock = (struct sock *)obj;
 487     assert( obj->ops == &sock_ops );
 488
 489     /* FIXME: special socket shutdown stuff? */
 490
 491     if ( sock->deferred )
 492         release_object ( sock->deferred );
 493
 494     if ( sock->flags & WSA_FLAG_OVERLAPPED )
 495     {
 496         destroy_async_queue ( &sock->read_q );
 497         destroy_async_queue ( &sock->write_q );
 498     }
 499     if (sock->event) release_object( sock->event );
 500 }
 501
 502 /* create a new and unconnected socket */
 503 static struct object *create_socket( int family, int type, int protocol, unsigned int flags )
 504 {
 505     struct sock *sock;
 506     int sockfd;
 507
 508     sockfd = socket( family, type, protocol );
 509     if (debug_level)
 510         fprintf(stderr,"socket(%d,%d,%d)=%d\n",family,type,protocol,sockfd);
 511     if (sockfd == -1) {
 512         sock_set_error();
 513         return NULL;
 514     }
 515     fcntl(sockfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 516     if (!(sock = alloc_object( &sock_ops, -1 ))) return NULL;
 517     sock->obj.fd = sockfd;
 518     sock->state = (type != SOCK_STREAM) ? (FD_READ|FD_WRITE) : 0;
 519     sock->mask    = 0;
 520     sock->hmask   = 0;
 521     sock->pmask   = 0;
 522     sock->flags   = flags;
 523     sock->event   = NULL;
 524     sock->window  = 0;
 525     sock->message = 0;
 526     sock->wparam  = 0;
 527     sock->deferred = NULL;
 528     if (sock->flags & WSA_FLAG_OVERLAPPED)
 529     {
 530         init_async_queue (&sock->read_q);
 531         init_async_queue (&sock->write_q);
 532     }
 533     sock_reselect( sock );
 534     clear_error();
 535     return &sock->obj;
 536 }
 537
 538 /* accept a socket (creates a new fd) */
 539 static struct sock *accept_socket( handle_t handle )
 540 {
 541     struct sock *acceptsock;
 542     struct sock *sock;
 543     int acceptfd;
 544     struct sockaddr     saddr;
 545     int                 slen;
 546
 547     sock=(struct sock*)get_handle_obj(current->process,handle,
 548                                       GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
 549     if (!sock)
 550         return NULL;
 551
 552     if ( sock->deferred ) {
 553         acceptsock = sock->deferred;
 554         sock->deferred = NULL;
 555     } else {
 556
 557         /* Try to accept(2). We can't be safe that this an already connected socket
 558          * or that accept() is allowed on it. In those cases we will get -1/errno
 559          * return.
 560          */
 561         slen = sizeof(saddr);
 562         acceptfd = accept(sock->obj.fd,&saddr,&slen);
 563         if (acceptfd==-1) {
 564             sock_set_error();
 565             release_object( sock );
 566             return NULL;
 567         }
 568         if (!(acceptsock = alloc_object( &sock_ops, -1 )))
 569         {
 570             release_object( sock );
 571             return NULL;
 572         }
 573
 574         /* newly created socket gets the same properties of the listening socket */
 575         fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 576         acceptsock->obj.fd = acceptfd;
 577         acceptsock->state  = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
 578         if (sock->state & FD_WINE_NONBLOCKING)
 579             acceptsock->state |= FD_WINE_NONBLOCKING;
 580         acceptsock->mask    = sock->mask;
 581         acceptsock->hmask   = 0;
 582         acceptsock->pmask   = 0;
 583         acceptsock->event   = NULL;
 584         acceptsock->window  = sock->window;
 585         acceptsock->message = sock->message;
 586         acceptsock->wparam  = 0;
 587         if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
 588         acceptsock->flags = sock->flags;
 589         acceptsock->deferred = 0;
 590         if ( acceptsock->flags & WSA_FLAG_OVERLAPPED )
 591         {
 592             init_async_queue ( &acceptsock->read_q );
 593             init_async_queue ( &acceptsock->write_q );
 594         }
 595     }
 596     clear_error();
 597     sock->pmask &= ~FD_ACCEPT;
 598     sock->hmask &= ~FD_ACCEPT;
 599     sock_reselect( sock );
 600     release_object( sock );
 601     return acceptsock;
 602 }
 603
 604 /* set the last error depending on errno */
 605 static int sock_get_error( int err )
 606 {
 607     switch (err)
 608     {
 609         case EINTR:             return WSAEINTR; break;
 610         case EBADF:             return WSAEBADF; break;
 611         case EPERM:
 612         case EACCES:            return WSAEACCES; break;
 613         case EFAULT:            return WSAEFAULT; break;
 614         case EINVAL:            return WSAEINVAL; break;
 615         case EMFILE:            return WSAEMFILE; break;
 616         case EWOULDBLOCK:       return WSAEWOULDBLOCK; break;
 617         case EINPROGRESS:       return WSAEINPROGRESS; break;
 618         case EALREADY:          return WSAEALREADY; break;
 619         case ENOTSOCK:          return WSAENOTSOCK; break;
 620         case EDESTADDRREQ:      return WSAEDESTADDRREQ; break;
 621         case EMSGSIZE:          return WSAEMSGSIZE; break;
 622         case EPROTOTYPE:        return WSAEPROTOTYPE; break;
 623         case ENOPROTOOPT:       return WSAENOPROTOOPT; break;
 624         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT; break;
 625         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT; break;
 626         case EOPNOTSUPP:        return WSAEOPNOTSUPP; break;
 627         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT; break;
 628         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT; break;
 629         case EADDRINUSE:        return WSAEADDRINUSE; break;
 630         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL; break;
 631         case ENETDOWN:          return WSAENETDOWN; break;
 632         case ENETUNREACH:       return WSAENETUNREACH; break;
 633         case ENETRESET:         return WSAENETRESET; break;
 634         case ECONNABORTED:      return WSAECONNABORTED; break;
 635         case EPIPE:
 636         case ECONNRESET:        return WSAECONNRESET; break;
 637         case ENOBUFS:           return WSAENOBUFS; break;
 638         case EISCONN:           return WSAEISCONN; break;
 639         case ENOTCONN:          return WSAENOTCONN; break;
 640         case ESHUTDOWN:         return WSAESHUTDOWN; break;
 641         case ETOOMANYREFS:      return WSAETOOMANYREFS; break;
 642         case ETIMEDOUT:         return WSAETIMEDOUT; break;
 643         case ECONNREFUSED:      return WSAECONNREFUSED; break;
 644         case ELOOP:             return WSAELOOP; break;
 645         case ENAMETOOLONG:      return WSAENAMETOOLONG; break;
 646         case EHOSTDOWN:         return WSAEHOSTDOWN; break;
 647         case EHOSTUNREACH:      return WSAEHOSTUNREACH; break;
 648         case ENOTEMPTY:         return WSAENOTEMPTY; break;
 649 #ifdef EPROCLIM
 650         case EPROCLIM:          return WSAEPROCLIM; break;
 651 #endif
 652 #ifdef EUSERS
 653         case EUSERS:            return WSAEUSERS; break;
 654 #endif
 655 #ifdef EDQUOT
 656         case EDQUOT:            return WSAEDQUOT; break;
 657 #endif
 658 #ifdef ESTALE
 659         case ESTALE:            return WSAESTALE; break;
 660 #endif
 661 #ifdef EREMOTE
 662         case EREMOTE:           return WSAEREMOTE; break;
 663 #endif
 664     default: errno=err; perror("sock_set_error"); return ERROR_UNKNOWN; break;
 665     }
 666 }
 667
 668 /* set the last error depending on errno */
 669 static void sock_set_error(void)
 670 {
 671     set_error( sock_get_error( errno ) );
 672 }
 673
 674 /* create a socket */
 675 DECL_HANDLER(create_socket)
 676 {
 677     struct object *obj;
 678
 679     reply->handle = 0;
 680     if ((obj = create_socket( req->family, req->type, req->protocol, req->flags )) != NULL)
 681     {
 682         reply->handle = alloc_handle( current->process, obj, req->access, req->inherit );
 683         release_object( obj );
 684     }
 685 }
 686
 687 /* accept a socket */
 688 DECL_HANDLER(accept_socket)
 689 {
 690     struct sock *sock;
 691
 692     reply->handle = 0;
 693     if ((sock = accept_socket( req->lhandle )) != NULL)
 694     {
 695         reply->handle = alloc_handle( current->process, &sock->obj, req->access, req->inherit );
 696         sock->wparam = reply->handle;  /* wparam for message is the socket handle */
 697         sock_reselect( sock );
 698         release_object( &sock->obj );
 699     }
 700 }
 701
 702 /* set socket event parameters */
 703 DECL_HANDLER(set_socket_event)
 704 {
 705     struct sock *sock;
 706     struct event *old_event;
 707     int pollev;
 708
 709     if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
 710                                                GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE, &sock_ops)))
 711         return;
 712     old_event = sock->event;
 713     sock->mask    = req->mask;
 714     sock->event   = NULL;
 715     sock->window  = req->window;
 716     sock->message = req->msg;
 717     sock->wparam  = req->handle;  /* wparam is the socket handle */
 718     if (req->event) sock->event = get_event_obj( current->process, req->event, EVENT_MODIFY_STATE );
 719
 720     if (debug_level && sock->event) fprintf(stderr, "event ptr: %p\n", sock->event);
 721
 722     pollev = sock_reselect( sock );
 723     if ( pollev ) sock_try_event ( sock, pollev );
 724
 725     if (sock->mask)
 726         sock->state |= FD_WINE_NONBLOCKING;
 727
 728     /* if a network event is pending, signal the event object
 729        it is possible that FD_CONNECT or FD_ACCEPT network events has happened
 730        before a WSAEventSelect() was done on it.
 731        (when dealing with Asynchronous socket)  */
 732     if (sock->pmask & sock->mask) sock_wake_up( sock, pollev );
 733
 734     if (old_event) release_object( old_event ); /* we're through with it */
 735     release_object( &sock->obj );
 736 }
 737
 738 /* get socket event parameters */
 739 DECL_HANDLER(get_socket_event)
 740 {
 741     struct sock *sock;
 742
 743     sock=(struct sock*)get_handle_obj(current->process,req->handle,GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops);
 744     if (!sock)
 745     {
 746         reply->mask  = 0;
 747         reply->pmask = 0;
 748         reply->state = 0;
 749         set_error( WSAENOTSOCK );
 750         return;
 751     }
 752     reply->mask  = sock->mask;
 753     reply->pmask = sock->pmask;
 754     reply->state = sock->state;
 755     set_reply_data( sock->errors, min( get_reply_max_size(), sizeof(sock->errors) ));
 756
 757     if (req->service)
 758     {
 759         if (req->c_event)
 760         {
 761             struct event *cevent = get_event_obj( current->process, req->c_event,
 762                                                   EVENT_MODIFY_STATE );
 763             if (cevent)
 764             {
 765                 reset_event( cevent );
 766                 release_object( cevent );
 767             }
 768         }
 769         sock->pmask = 0;
 770         sock_reselect( sock );
 771     }
 772     release_object( &sock->obj );
 773 }
 774
 775 /* re-enable pending socket events */
 776 DECL_HANDLER(enable_socket_event)
 777 {
 778     struct sock *sock;
 779     int pollev;
 780
 781     if (!(sock = (struct sock*)get_handle_obj( current->process, req->handle,
 782                                                GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE, &sock_ops)))
 783         return;
 784
 785     sock->pmask &= ~req->mask; /* is this safe? */
 786     sock->hmask &= ~req->mask;
 787     sock->state |= req->sstate;
 788     sock->state &= ~req->cstate;
 789
 790     pollev = sock_reselect( sock );
 791     if ( pollev ) sock_try_event ( sock, pollev );
 792
 793     release_object( &sock->obj );
 794 }
 795
 796 DECL_HANDLER(set_socket_deferred)
 797 {
 798     struct sock *sock, *acceptsock;
 799
 800     sock=(struct sock*)get_handle_obj( current->process,req->handle,
 801                                        GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops );
 802     if ( !sock )
 803     {
 804         set_error ( WSAENOTSOCK );
 805         return;
 806     }
 807     acceptsock = (struct sock*)get_handle_obj( current->process,req->deferred,
 808                                                GENERIC_READ|GENERIC_WRITE|SYNCHRONIZE,&sock_ops );
 809     if ( !acceptsock )
 810     {
 811         release_object ( sock );
 812         set_error ( WSAENOTSOCK );
 813         return;
 814     }
 815     sock->deferred = acceptsock;
 816     release_object ( sock );
 817 }