dlls/ws2_32/socket16.c

   1 /*
   2  * 16-bit socket functions
   3  *
   4  * Copyright (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka
   5  * Copyright (C) 2003 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include "winsock2.h"
  26 #include "wine/winbase16.h"
  27 #include "wine/winsock16.h"
  28 #include "wownt32.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(winsock);
  32
  33 static INT num_startup;  /* reference counter */
  34 static void *he_buffer;
  35 static SEGPTR he_buffer_seg;
  36 static void *se_buffer;
  37 static SEGPTR se_buffer_seg;
  38 static void *pe_buffer;
  39 static SEGPTR pe_buffer_seg;
  40 static SEGPTR dbuffer_seg;
  41
  42 extern int WINAPI WS_gethostname(char *name, int namelen);
  43
  44 static WS_fd_set *ws_fdset_16_to_32( const ws_fd_set16 *set16, WS_fd_set *set32 )
  45 {
  46     UINT i;
  47     set32->fd_count = set16->fd_count;
  48     for (i = 0; i < set32->fd_count; i++) set32->fd_array[i] = set16->fd_array[i];
  49     return set32;
  50 }
  51
  52 static ws_fd_set16 *ws_fdset_32_to_16( const WS_fd_set *set32, ws_fd_set16 *set16 )
  53 {
  54     UINT i;
  55     set16->fd_count = set32->fd_count;
  56     for (i = 0; i < set16->fd_count; i++) set16->fd_array[i] = set32->fd_array[i];
  57     return set16;
  58 }
  59
  60 static int list_size(char** l, int item_size)
  61 {
  62     int i,j = 0;
  63     if(l)
  64     {
  65         for(i=0;l[i];i++)
  66             j += (item_size) ? item_size : strlen(l[i]) + 1;
  67         j += (i + 1) * sizeof(char*);
  68     }
  69     return j;
  70 }
  71
  72 static int list_dup(char** l_src, SEGPTR base, int item_size)
  73 {
  74     int i, offset;
  75     char *ref = MapSL(base);
  76     SEGPTR *l_to = (SEGPTR *)ref;
  77
  78     for (i = 0; l_src[i]; i++) ;
  79     offset = (i + 1) * sizeof(char*);
  80     for (i = 0; l_src[i]; i++)
  81     {
  82         int count = item_size ? item_size : strlen(l_src[i]) + 1;
  83         memcpy( ref + offset, l_src[i], count );
  84         l_to[i] = base + offset;
  85         offset += count;
  86     }
  87     l_to[i] = 0;
  88     return offset;
  89 }
  90
  91 static SEGPTR get_buffer_he(int size)
  92 {
  93     static int he_len;
  94     if (he_buffer)
  95     {
  96         if (he_len >= size ) return he_buffer_seg;
  97         UnMapLS( he_buffer_seg );
  98         HeapFree( GetProcessHeap(), 0, he_buffer );
  99     }
 100     he_buffer = HeapAlloc( GetProcessHeap(), 0, (he_len = size) );
 101     he_buffer_seg = MapLS( he_buffer );
 102     return he_buffer_seg;
 103 }
 104
 105 static SEGPTR get_buffer_se(int size)
 106 {
 107     static int se_len;
 108     if (se_buffer)
 109     {
 110         if (se_len >= size ) return se_buffer_seg;
 111         UnMapLS( se_buffer_seg );
 112         HeapFree( GetProcessHeap(), 0, se_buffer );
 113     }
 114     se_buffer = HeapAlloc( GetProcessHeap(), 0, (se_len = size) );
 115     se_buffer_seg = MapLS( se_buffer );
 116     return se_buffer_seg;
 117 }
 118
 119 static SEGPTR get_buffer_pe(int size)
 120 {
 121     static int pe_len;
 122     if (pe_buffer)
 123     {
 124         if (pe_len >= size ) return pe_buffer_seg;
 125         UnMapLS( pe_buffer_seg );
 126         HeapFree( GetProcessHeap(), 0, pe_buffer );
 127     }
 128     pe_buffer = HeapAlloc( GetProcessHeap(), 0, (pe_len = size) );
 129     pe_buffer_seg = MapLS( pe_buffer );
 130     return pe_buffer_seg;
 131 }
 132
 133 /* duplicate hostent entry
 134  * and handle all Win16/Win32 dependent things (struct size, ...) *correctly*.
 135  * Dito for protoent and servent.
 136  */
 137 static SEGPTR ws_hostent_32_to_16( const struct WS_hostent* he )
 138 {
 139     char *p;
 140     SEGPTR base;
 141     struct ws_hostent16 *p_to;
 142
 143     int size = (sizeof(*he) +
 144                 strlen(he->h_name) + 1 +
 145                 list_size(he->h_aliases, 0) +
 146                 list_size(he->h_addr_list, he->h_length));
 147
 148     base = get_buffer_he(size);
 149     p_to = MapSL(base);
 150
 151     p_to->h_addrtype = he->h_addrtype;
 152     p_to->h_length = he->h_length;
 153
 154     p = (char *)(p_to + 1);
 155     p_to->h_name = base + (p - (char *)p_to);
 156     strcpy(p, he->h_name);
 157     p += strlen(p) + 1;
 158
 159     p_to->h_aliases = base + (p - (char *)p_to);
 160     p += list_dup(he->h_aliases, p_to->h_aliases, 0);
 161
 162     p_to->h_addr_list = base + (p - (char *)p_to);
 163     list_dup(he->h_addr_list, p_to->h_addr_list, he->h_length);
 164
 165     return base;
 166 }
 167
 168 static SEGPTR ws_protoent_32_to_16( const struct WS_protoent *pe )
 169 {
 170     char *p;
 171     SEGPTR base;
 172     struct ws_protoent16 *p_to;
 173
 174     int size = (sizeof(*pe) +
 175                 strlen(pe->p_name) + 1 +
 176                 list_size(pe->p_aliases, 0));
 177
 178     base = get_buffer_pe(size);
 179     p_to = MapSL(base);
 180
 181     p_to->p_proto = pe->p_proto;
 182     p = (char *)(p_to + 1);
 183
 184     p_to->p_name = base + (p - (char *)p_to);
 185     strcpy(p, pe->p_name);
 186     p += strlen(p) + 1;
 187
 188     p_to->p_aliases = base + (p - (char *)p_to);
 189     list_dup(pe->p_aliases, p_to->p_aliases, 0);
 190
 191     return base;
 192 }
 193
 194 static SEGPTR ws_servent_32_to_16( const struct WS_servent *se )
 195 {
 196     char *p;
 197     SEGPTR base;
 198     struct ws_servent16 *p_to;
 199
 200     int size = (sizeof(*se) +
 201                 strlen(se->s_proto) + 1 +
 202                 strlen(se->s_name) + 1 +
 203                 list_size(se->s_aliases, 0));
 204
 205     base = get_buffer_se(size);
 206     p_to = MapSL(base);
 207
 208     p_to->s_port = se->s_port;
 209     p = (char *)(p_to + 1);
 210
 211     p_to->s_name = base + (p - (char *)p_to);
 212     strcpy(p, se->s_name);
 213     p += strlen(p) + 1;
 214
 215     p_to->s_proto = base + (p - (char *)p_to);
 216     strcpy(p, se->s_proto);
 217     p += strlen(p) + 1;
 218
 219     p_to->s_aliases = base + (p - (char *)p_to);
 220     list_dup(se->s_aliases, p_to->s_aliases, 0);
 221
 222     return base;
 223 }
 224
 225
 226 /***********************************************************************
 227  *              accept          (WINSOCK.1)
 228  */
 229 SOCKET16 WINAPI accept16(SOCKET16 s, struct WS_sockaddr* addr, INT16* addrlen16 )
 230 {
 231     INT addrlen32 = addrlen16 ? *addrlen16 : 0;
 232     SOCKET retSocket = WS_accept( s, addr, &addrlen32 );
 233     if( addrlen16 ) *addrlen16 = addrlen32;
 234     return retSocket;
 235 }
 236
 237 /***********************************************************************
 238  *              bind                    (WINSOCK.2)
 239  */
 240 INT16 WINAPI bind16(SOCKET16 s, struct WS_sockaddr *name, INT16 namelen)
 241 {
 242     return WS_bind( s, name, namelen );
 243 }
 244
 245 /***********************************************************************
 246  *              closesocket           (WINSOCK.3)
 247  */
 248 INT16 WINAPI closesocket16(SOCKET16 s)
 249 {
 250     return WS_closesocket(s);
 251 }
 252
 253 /***********************************************************************
 254  *              connect               (WINSOCK.4)
 255  */
 256 INT16 WINAPI connect16(SOCKET16 s, struct WS_sockaddr *name, INT16 namelen)
 257 {
 258     return WS_connect( s, name, namelen );
 259 }
 260
 261 /***********************************************************************
 262  *              getpeername             (WINSOCK.5)
 263  */
 264 INT16 WINAPI getpeername16(SOCKET16 s, struct WS_sockaddr *name, INT16 *namelen16)
 265 {
 266     INT namelen32 = *namelen16;
 267     INT retVal = WS_getpeername( s, name, &namelen32 );
 268    *namelen16 = namelen32;
 269     return retVal;
 270 }
 271
 272 /***********************************************************************
 273  *              getsockname             (WINSOCK.6)
 274  */
 275 INT16 WINAPI getsockname16(SOCKET16 s, struct WS_sockaddr *name, INT16 *namelen16)
 276 {
 277     INT retVal;
 278
 279     if( namelen16 )
 280     {
 281         INT namelen32 = *namelen16;
 282         retVal = WS_getsockname( s, name, &namelen32 );
 283        *namelen16 = namelen32;
 284     }
 285     else retVal = SOCKET_ERROR;
 286     return retVal;
 287 }
 288
 289 /***********************************************************************
 290  *              getsockopt              (WINSOCK.7)
 291  */
 292 INT16 WINAPI getsockopt16(SOCKET16 s, INT16 level, INT16 optname, char *optval, INT16 *optlen)
 293 {
 294     INT optlen32;
 295     INT *p = &optlen32;
 296     INT retVal;
 297     if( optlen ) optlen32 = *optlen; else p = NULL;
 298     retVal = WS_getsockopt( s, level, optname, optval, p );
 299     if( optlen ) *optlen = optlen32;
 300     return retVal;
 301 }
 302
 303 /***********************************************************************
 304  *              inet_ntoa               (WINSOCK.11)
 305  */
 306 SEGPTR WINAPI inet_ntoa16(struct WS_in_addr in)
 307 {
 308     char* retVal;
 309     if (!(retVal = WS_inet_ntoa( in ))) return 0;
 310     if (!dbuffer_seg) dbuffer_seg = MapLS( retVal );
 311     return dbuffer_seg;
 312 }
 313
 314 /***********************************************************************
 315  *              ioctlsocket           (WINSOCK.12)
 316  */
 317 INT16 WINAPI ioctlsocket16(SOCKET16 s, LONG cmd, ULONG *argp)
 318 {
 319     return WS_ioctlsocket( s, cmd, argp );
 320 }
 321
 322 /***********************************************************************
 323  *              listen          (WINSOCK.13)
 324  */
 325 INT16 WINAPI listen16(SOCKET16 s, INT16 backlog)
 326 {
 327     return WS_listen( s, backlog );
 328 }
 329
 330 /***********************************************************************
 331  *              recv                    (WINSOCK.16)
 332  */
 333 INT16 WINAPI recv16(SOCKET16 s, char *buf, INT16 len, INT16 flags)
 334 {
 335     return WS_recv( s, buf, len, flags );
 336 }
 337
 338 /***********************************************************************
 339  *              recvfrom                (WINSOCK.17)
 340  */
 341 INT16 WINAPI recvfrom16(SOCKET16 s, char *buf, INT16 len, INT16 flags,
 342                         struct WS_sockaddr *from, INT16 *fromlen16)
 343 {
 344     if (fromlen16)
 345     {
 346         INT fromlen32 = *fromlen16;
 347         INT retVal = WS_recvfrom( s, buf, len, flags, from, &fromlen32 );
 348         *fromlen16 = fromlen32;
 349         return retVal;
 350     }
 351     else return WS_recvfrom( s, buf, len, flags, from, NULL );
 352 }
 353
 354 /***********************************************************************
 355  *              select                  (WINSOCK.18)
 356  */
 357 INT16 WINAPI select16(INT16 nfds, ws_fd_set16 *ws_readfds,
 358                       ws_fd_set16 *ws_writefds, ws_fd_set16 *ws_exceptfds,
 359                       struct WS_timeval* timeout)
 360 {
 361     WS_fd_set read_set, write_set, except_set;
 362     WS_fd_set *pread_set = NULL, *pwrite_set = NULL, *pexcept_set = NULL;
 363     int ret;
 364
 365     if (ws_readfds) pread_set = ws_fdset_16_to_32( ws_readfds, &read_set );
 366     if (ws_writefds) pwrite_set = ws_fdset_16_to_32( ws_writefds, &write_set );
 367     if (ws_exceptfds) pexcept_set = ws_fdset_16_to_32( ws_exceptfds, &except_set );
 368     /* struct timeval is the same for both 32- and 16-bit code */
 369     ret = WS_select( nfds, pread_set, pwrite_set, pexcept_set, timeout );
 370     if (ws_readfds) ws_fdset_32_to_16( &read_set, ws_readfds );
 371     if (ws_writefds) ws_fdset_32_to_16( &write_set, ws_writefds );
 372     if (ws_exceptfds) ws_fdset_32_to_16( &except_set, ws_exceptfds );
 373     return ret;
 374 }
 375
 376 /***********************************************************************
 377  *              send                    (WINSOCK.19)
 378  */
 379 INT16 WINAPI send16(SOCKET16 s, char *buf, INT16 len, INT16 flags)
 380 {
 381     return WS_send( s, buf, len, flags );
 382 }
 383
 384 /***********************************************************************
 385  *              sendto          (WINSOCK.20)
 386  */
 387 INT16 WINAPI sendto16(SOCKET16 s, char *buf, INT16 len, INT16 flags,
 388                       struct WS_sockaddr *to, INT16 tolen)
 389 {
 390     return WS_sendto( s, buf, len, flags, to, tolen );
 391 }
 392
 393 /***********************************************************************
 394  *              setsockopt              (WINSOCK.21)
 395  */
 396 INT16 WINAPI setsockopt16(SOCKET16 s, INT16 level, INT16 optname,
 397                           char *optval, INT16 optlen)
 398 {
 399     if( !optval ) return SOCKET_ERROR;
 400     return WS_setsockopt( s, level, optname, optval, optlen );
 401 }
 402
 403 /***********************************************************************
 404  *              shutdown                (WINSOCK.22)
 405  */
 406 INT16 WINAPI shutdown16(SOCKET16 s, INT16 how)
 407 {
 408     return WS_shutdown( s, how );
 409 }
 410
 411 /***********************************************************************
 412  *              socket          (WINSOCK.23)
 413  */
 414 SOCKET16 WINAPI socket16(INT16 af, INT16 type, INT16 protocol)
 415 {
 416     return WS_socket( af, type, protocol );
 417 }
 418
 419 /***********************************************************************
 420  *              gethostbyaddr           (WINSOCK.51)
 421  */
 422 SEGPTR WINAPI gethostbyaddr16(const char *addr, INT16 len, INT16 type)
 423 {
 424     struct WS_hostent *he;
 425
 426     if (!(he = WS_gethostbyaddr( addr, len, type ))) return 0;
 427     return ws_hostent_32_to_16( he );
 428 }
 429
 430 /***********************************************************************
 431  *              gethostbyname           (WINSOCK.52)
 432  */
 433 SEGPTR WINAPI gethostbyname16(const char *name)
 434 {
 435     struct WS_hostent *he;
 436
 437     if (!(he = WS_gethostbyname( name ))) return 0;
 438     return ws_hostent_32_to_16( he );
 439 }
 440
 441 /***********************************************************************
 442  *              getprotobyname          (WINSOCK.53)
 443  */
 444 SEGPTR WINAPI getprotobyname16(const char *name)
 445 {
 446     struct WS_protoent *pe;
 447
 448     if (!(pe = WS_getprotobyname( name ))) return 0;
 449     return ws_protoent_32_to_16( pe );
 450 }
 451
 452 /***********************************************************************
 453  *              getprotobynumber        (WINSOCK.54)
 454  */
 455 SEGPTR WINAPI getprotobynumber16(INT16 number)
 456 {
 457     struct WS_protoent *pe;
 458
 459     if (!(pe = WS_getprotobynumber( number ))) return 0;
 460     return ws_protoent_32_to_16( pe );
 461 }
 462
 463 /***********************************************************************
 464  *              getservbyname           (WINSOCK.55)
 465  */
 466 SEGPTR WINAPI getservbyname16(const char *name, const char *proto)
 467 {
 468     struct WS_servent *se;
 469
 470     if (!(se = WS_getservbyname( name, proto ))) return 0;
 471     return ws_servent_32_to_16( se );
 472 }
 473
 474 /***********************************************************************
 475  *              getservbyport           (WINSOCK.56)
 476  */
 477 SEGPTR WINAPI getservbyport16(INT16 port, const char *proto)
 478 {
 479     struct WS_servent *se;
 480
 481     if (!(se = WS_getservbyport( port, proto ))) return 0;
 482     return ws_servent_32_to_16( se );
 483 }
 484
 485 /***********************************************************************
 486  *              gethostname           (WINSOCK.57)
 487  */
 488 INT16 WINAPI gethostname16(char *name, INT16 namelen)
 489 {
 490     return WS_gethostname(name, namelen);
 491 }
 492
 493 /***********************************************************************
 494  *      WSAAsyncSelect          (WINSOCK.101)
 495  */
 496 INT16 WINAPI WSAAsyncSelect16(SOCKET16 s, HWND16 hWnd, UINT16 wMsg, LONG lEvent)
 497 {
 498     return WSAAsyncSelect( s, HWND_32(hWnd), wMsg, lEvent );
 499 }
 500
 501 /***********************************************************************
 502  *      WSASetBlockingHook              (WINSOCK.109)
 503  */
 504 FARPROC16 WINAPI WSASetBlockingHook16(FARPROC16 lpBlockFunc)
 505 {
 506     /* FIXME: should deal with 16-bit proc */
 507     return (FARPROC16)WSASetBlockingHook( (FARPROC)lpBlockFunc );
 508 }
 509
 510 /***********************************************************************
 511  *      WSAUnhookBlockingHook   (WINSOCK.110)
 512  */
 513 INT16 WINAPI WSAUnhookBlockingHook16(void)
 514 {
 515     return WSAUnhookBlockingHook();
 516 }
 517
 518 /***********************************************************************
 519  *      WSASetLastError         (WINSOCK.112)
 520  */
 521 void WINAPI WSASetLastError16(INT16 iError)
 522 {
 523     WSASetLastError(iError);
 524 }
 525
 526 /***********************************************************************
 527  *      WSAStartup                      (WINSOCK.115)
 528  *
 529  * Create socket control struct, attach it to the global list and
 530  * update a pointer in the task struct.
 531  */
 532 INT16 WINAPI WSAStartup16(UINT16 wVersionRequested, LPWSADATA16 lpWSAData)
 533 {
 534     WSADATA data;
 535     INT ret = WSAStartup( wVersionRequested, &data );
 536
 537     if (!ret)
 538     {
 539         lpWSAData->wVersion     = 0x0101;
 540         lpWSAData->wHighVersion = 0x0101;
 541         strcpy( lpWSAData->szDescription, data.szDescription );
 542         strcpy( lpWSAData->szSystemStatus, data.szSystemStatus );
 543         lpWSAData->iMaxSockets = data.iMaxSockets;
 544         lpWSAData->iMaxUdpDg = data.iMaxUdpDg;
 545         lpWSAData->lpVendorInfo = 0;
 546         num_startup++;
 547    }
 548     return ret;
 549 }
 550
 551 /***********************************************************************
 552  *      WSACleanup                      (WINSOCK.116)
 553  */
 554 INT WINAPI WSACleanup16(void)
 555 {
 556     if (num_startup)
 557     {
 558         if (!--num_startup)
 559         {
 560             /* delete scratch buffers */
 561             UnMapLS( he_buffer_seg );
 562             UnMapLS( se_buffer_seg );
 563             UnMapLS( pe_buffer_seg );
 564             UnMapLS( dbuffer_seg );
 565             he_buffer_seg = 0;
 566             se_buffer_seg = 0;
 567             pe_buffer_seg = 0;
 568             dbuffer_seg = 0;
 569             HeapFree( GetProcessHeap(), 0, he_buffer );
 570             HeapFree( GetProcessHeap(), 0, se_buffer );
 571             HeapFree( GetProcessHeap(), 0, pe_buffer );
 572             he_buffer = NULL;
 573             se_buffer = NULL;
 574             pe_buffer = NULL;
 575         }
 576     }
 577     return WSACleanup();
 578 }
 579
 580
 581 /***********************************************************************
 582  *      __WSAFDIsSet                    (WINSOCK.151)
 583  */
 584 INT16 WINAPI __WSAFDIsSet16(SOCKET16 s, ws_fd_set16 *set)
 585 {
 586   int i = set->fd_count;
 587
 588   TRACE("(%d,%p(%i))\n", s, set, i);
 589
 590   while (i--)
 591       if (set->fd_array[i] == s) return 1;
 592   return 0;
 593 }
 594
 595 /***********************************************************************
 596  *              WSARecvEx                       (WINSOCK.1107)
 597  *
 598  * See description for WSARecvEx()
 599  */
 600 INT16 WINAPI WSARecvEx16(SOCKET16 s, char *buf, INT16 len, INT16 *flags)
 601 {
 602     FIXME("(WSARecvEx16) partial packet return value not set\n");
 603     return recv16(s, buf, len, *flags);
 604 }