misc/winsock_async.c

   1 /* Async WINSOCK DNS services
   2  *
   3  * (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
   4  * (C) 1999 Marcus Meissner
   5  *
   6  * NOTE: If you make any changes to fix a particular app, make sure
   7  * they don't break something else like Netscape or telnet and ftp
   8  * clients and servers (www.winsite.com got a lot of those).
   9  *
  10  * FIXME:
  11  *      - Add WSACancel* and correct handle management. (works rather well for
  12  *        now without it.)
  13  *      - Verify & Check all calls for correctness
  14  *        (currently only WSAGetHostByName*, WSAGetServByPort* calls)
  15  *      - Check error returns.
  16  *      - mirc/mirc32 Finger @linux.kernel.org sometimes fails in threaded mode.
  17  *        (not sure why)
  18  *      - This implementation did ignore the "NOTE:" section above (since the
  19  *        whole stuff did not work anyway to other changes).
  20  */
  21
  22 #include "config.h"
  23
  24 #include <string.h>
  25 #include <sys/types.h>
  26 #ifdef HAVE_SYS_IPC_H
  27 # include <sys/ipc.h>
  28 #endif
  29 #include <sys/ioctl.h>
  30 #ifdef HAVE_SYS_FILIO_H
  31 # include <sys/filio.h>
  32 #endif
  33 #if defined(__svr4__)
  34 #include <sys/ioccom.h>
  35 #ifdef HAVE_SYS_SOCKIO_H
  36 # include <sys/sockio.h>
  37 #endif
  38 #endif
  39
  40 #if defined(__EMX__)
  41 # include <sys/so_ioctl.h>
  42 #endif
  43
  44 #ifdef HAVE_SYS_PARAM_H
  45 # include <sys/param.h>
  46 #endif
  47
  48 #ifdef HAVE_SYS_MSG_H
  49 # include <sys/msg.h>
  50 #endif
  51 #ifdef HAVE_SYS_WAIT_H
  52 #include <sys/wait.h>
  53 #endif
  54 #ifdef HAVE_SYS_SOCKET_H
  55 #include <sys/socket.h>
  56 #endif
  57 #ifdef HAVE_NETINET_IN_H
  58 # include <netinet/in.h>
  59 #endif
  60 #ifdef HAVE_ARPA_INET_H
  61 # include <arpa/inet.h>
  62 #endif
  63 #include <ctype.h>
  64 #include <fcntl.h>
  65 #include <errno.h>
  66 #ifdef HAVE_SYS_ERRNO_H
  67 #include <sys/errno.h>
  68 #endif
  69 #include <netdb.h>
  70 #include <unistd.h>
  71 #include <stdlib.h>
  72 #ifdef HAVE_ARPA_NAMESER_H
  73 # include <arpa/nameser.h>
  74 #endif
  75 #ifdef HAVE_RESOLV_H
  76 # include <resolv.h>
  77 #endif
  78
  79 #include "wine/winbase16.h"
  80 #include "winsock.h"
  81 #include "winnt.h"
  82 #include "heap.h"
  83 #include "task.h"
  84 #include "message.h"
  85 #include "miscemu.h"
  86 #include "wine/port.h"
  87 #include "debugtools.h"
  88
  89 DEFAULT_DEBUG_CHANNEL(winsock)
  90
  91 /* ----------------------------------- helper functions - */
  92
  93 static int list_size(char** l, int item_size)
  94 {
  95   int i,j = 0;
  96   if(l)
  97   { for(i=0;l[i];i++)
  98         j += (item_size) ? item_size : strlen(l[i]) + 1;
  99     j += (i + 1) * sizeof(char*); }
 100   return j;
 101 }
 102
 103 static int list_dup(char** l_src, char* ref, char* base, int item_size)
 104 {
 105    /* base is either either equal to ref or 0 or SEGPTR */
 106
 107    char*                p = ref;
 108    char**               l_to = (char**)ref;
 109    int                  i,j,k;
 110
 111    for(j=0;l_src[j];j++) ;
 112    p += (j + 1) * sizeof(char*);
 113    for(i=0;i<j;i++)
 114    { l_to[i] = base + (p - ref);
 115      k = ( item_size ) ? item_size : strlen(l_src[i]) + 1;
 116      memcpy(p, l_src[i], k); p += k; }
 117    l_to[i] = NULL;
 118    return (p - ref);
 119 }
 120
 121 /* ----- hostent */
 122
 123 static int hostent_size(struct hostent* p_he)
 124 {
 125   int size = 0;
 126   if( p_he )
 127   { size  = sizeof(struct hostent);
 128     size += strlen(p_he->h_name) + 1;
 129     size += list_size(p_he->h_aliases, 0);
 130     size += list_size(p_he->h_addr_list, p_he->h_length ); }
 131   return size;
 132 }
 133
 134 /* Copy hostent to p_to, fix up inside pointers using p_base (different for
 135  * Win16 (linear vs. segmented). Return -neededsize on overrun.
 136  */
 137 static int WS_copy_he(struct ws_hostent *p_to,char *p_base,int t_size,struct hostent* p_he)
 138 {
 139         char* p_name,*p_aliases,*p_addr,*p;
 140         int     size=hostent_size(p_he)+(sizeof(struct ws_hostent)-sizeof(struct hostent));
 141
 142         if (t_size < size)
 143                 return -size;
 144         p = (char*)p_to;
 145         p += sizeof(struct ws_hostent);
 146         p_name = p;
 147         strcpy(p, p_he->h_name); p += strlen(p) + 1;
 148         p_aliases = p;
 149         p += list_dup(p_he->h_aliases, p, p_base + (p - (char*)p_to), 0);
 150         p_addr = p;
 151         list_dup(p_he->h_addr_list, p, p_base + (p - (char*)p_to), p_he->h_length);
 152
 153         p_to->h_addrtype = (INT16)p_he->h_addrtype;
 154         p_to->h_length = (INT16)p_he->h_length;
 155         p_to->h_name = (SEGPTR)(p_base + (p_name - (char*)p_to));
 156         p_to->h_aliases = (SEGPTR)(p_base + (p_aliases - (char*)p_to));
 157         p_to->h_addr_list = (SEGPTR)(p_base + (p_addr - (char*)p_to));
 158
 159         return size;
 160 }
 161
 162 /* ----- protoent */
 163
 164 static int protoent_size(struct protoent* p_pe)
 165 {
 166   int size = 0;
 167   if( p_pe )
 168   { size  = sizeof(struct protoent);
 169     size += strlen(p_pe->p_name) + 1;
 170     size += list_size(p_pe->p_aliases, 0); }
 171   return size;
 172 }
 173
 174 /* Copy protoent to p_to, fix up inside pointers using p_base (different for
 175  * Win16 (linear vs. segmented). Return -neededsize on overrun.
 176  */
 177 static int WS_copy_pe(struct ws_protoent *p_to,char *p_base,int t_size,struct protoent* p_pe)
 178 {
 179         char* p_name,*p_aliases,*p;
 180         int     size=protoent_size(p_pe)+(sizeof(struct ws_protoent)-sizeof(struct protoent));
 181
 182         if (t_size < size)
 183                 return -size;
 184         p = (char*)p_to;
 185         p += sizeof(struct ws_protoent);
 186         p_name = p;
 187         strcpy(p, p_pe->p_name); p += strlen(p) + 1;
 188         p_aliases = p;
 189         list_dup(p_pe->p_aliases, p, p_base + (p - (char*)p_to), 0);
 190
 191         p_to->p_proto = (INT16)p_pe->p_proto;
 192         p_to->p_name = (SEGPTR)(p_base) + (p_name - (char*)p_to);
 193         p_to->p_aliases = (SEGPTR)((p_base) + (p_aliases - (char*)p_to));
 194
 195
 196         return size;
 197 }
 198
 199 /* ----- servent */
 200
 201 static int servent_size(struct servent* p_se)
 202 {
 203         int size = 0;
 204         if( p_se ) {
 205                 size += sizeof(struct servent);
 206                 size += strlen(p_se->s_proto) + strlen(p_se->s_name) + 2;
 207                 size += list_size(p_se->s_aliases, 0);
 208         }
 209         return size;
 210 }
 211
 212 /* Copy servent to p_to, fix up inside pointers using p_base (different for
 213  * Win16 (linear vs. segmented). Return -neededsize on overrun.
 214  */
 215 static int WS_copy_se(struct ws_servent *p_to,char *p_base,int t_size,struct servent* p_se)
 216 {
 217         char* p_name,*p_aliases,*p_proto,*p;
 218         int     size = servent_size(p_se)+(sizeof(struct ws_servent)-sizeof(struct servent));
 219
 220         if (t_size < size )
 221                 return -size;
 222         p = (char*)p_to;
 223         p += sizeof(struct ws_servent);
 224         p_name = p;
 225         strcpy(p, p_se->s_name); p += strlen(p) + 1;
 226         p_proto = p;
 227         strcpy(p, p_se->s_proto); p += strlen(p) + 1;
 228         p_aliases = p;
 229         list_dup(p_se->s_aliases, p, p_base + (p - (char*)p_to), 0);
 230
 231         p_to->s_port = (INT16)p_se->s_port;
 232         p_to->s_name = (SEGPTR)(p_base + (p_name - (char*)p_to));
 233         p_to->s_proto = (SEGPTR)(p_base + (p_proto - (char*)p_to));
 234         p_to->s_aliases = (SEGPTR)(p_base + (p_aliases - (char*)p_to));
 235
 236         return size;
 237 }
 238
 239 static HANDLE __ws_async_handle = 0xdead;
 240
 241 /* Generic async query struct. we use symbolic names for the different queries
 242  * for readability.
 243  */
 244 typedef struct _async_query {
 245         HWND16          hWnd;
 246         UINT16          uMsg;
 247         LPCSTR          ptr1;
 248 #define host_name       ptr1
 249 #define host_addr       ptr1
 250 #define serv_name       ptr1
 251 #define proto_name      ptr1
 252         LPCSTR          ptr2;
 253 #define serv_proto      ptr2
 254         int             int1;
 255 #define host_len        int1
 256 #define proto_number    int1
 257 #define serv_port       int1
 258         int             int2;
 259 #define host_type       int2
 260         SEGPTR          sbuf;
 261         INT16           sbuflen;
 262
 263         HANDLE16        async_handle;
 264         int             flags;
 265 #define AQ_WIN16        0
 266 #define AQ_WIN32        4
 267 #define HB_WIN32(hb) (hb->flags & AQ_WIN32)
 268 #define AQ_NUMBER       0
 269 #define AQ_NAME         8
 270
 271 #define AQ_GETHOST      0
 272 #define AQ_GETPROTO     1
 273 #define AQ_GETSERV      2
 274 #define AQ_GETMASK      3
 275         int             qt;
 276 } async_query;
 277
 278 /****************************************************************************
 279  * The async query function.
 280  *
 281  * It is either called as a thread startup routine or directly. It has
 282  * to free the passed arg from the process heap and PostMessageA the async
 283  * result or the error code.
 284  *
 285  * FIXME:
 286  *      - errorhandling not verified.
 287  */
 288 static DWORD WINAPI _async_queryfun(LPVOID arg) {
 289         async_query     *aq = (async_query*)arg;
 290         int             size = 0;
 291         WORD            fail = 0;
 292         char            *targetptr = (HB_WIN32(aq)?(char*)aq->sbuf:(char*)PTR_SEG_TO_LIN(aq->sbuf));
 293
 294         switch (aq->flags & AQ_GETMASK) {
 295         case AQ_GETHOST: {
 296                         struct hostent          *he;
 297                         struct ws_hostent       *wshe = (struct ws_hostent*)targetptr;
 298
 299                         he = (aq->flags & AQ_NAME) ?
 300                                 gethostbyname(aq->host_name):
 301                                 gethostbyaddr(aq->host_addr,aq->host_len,aq->host_type);
 302                         if (he) {
 303                                 size = WS_copy_he(wshe,(char*)aq->sbuf,aq->sbuflen,he);
 304                                 if (size < 0) {
 305                                         fail = WSAENOBUFS;
 306                                         size = -size;
 307                                 }
 308                         } else {
 309                                 fail = WSAENOBUFS;
 310                         }
 311                 }
 312                 break;
 313         case AQ_GETPROTO: {
 314                         struct  protoent        *pe;
 315                         struct ws_protoent      *wspe = (struct ws_protoent*)targetptr;
 316                         pe = (aq->flags & AQ_NAME)?
 317                                 getprotobyname(aq->proto_name) :
 318                                 getprotobynumber(aq->proto_number);
 319                         if (pe) {
 320                                 size = WS_copy_pe(wspe,(char*)aq->sbuf,aq->sbuflen,pe);
 321                                 if (size < 0) {
 322                                         fail = WSAENOBUFS;
 323                                         size = -size;
 324                                 }
 325                         } else {
 326                                 fail = WSAENOBUFS;
 327                         }
 328                 }
 329                 break;
 330         case AQ_GETSERV: {
 331                         struct  servent *se;
 332                         struct ws_servent       *wsse = (struct ws_servent*)targetptr;
 333                         se = (aq->flags & AQ_NAME)?
 334                                 getservbyname(aq->serv_name,aq->serv_proto) :
 335                                 getservbyport(aq->serv_port,aq->serv_proto);
 336                         if (se) {
 337                                 size = WS_copy_se(wsse,(char*)aq->sbuf,aq->sbuflen,se);
 338                                 if (size < 0) {
 339                                         fail = WSAENOBUFS;
 340                                         size = -size;
 341                                 }
 342                         } else {
 343                                 fail = WSAENOBUFS;
 344                         }
 345                 }
 346                 break;
 347         }
 348         PostMessageA(aq->hWnd,aq->uMsg,aq->async_handle,size|(fail<<16));
 349         HeapFree(GetProcessHeap(),0,arg);
 350         return 0;
 351 }
 352
 353 /****************************************************************************
 354  * The main async help function.
 355  *
 356  * It either starts a thread or just calls the function directly for platforms
 357  * with no thread support. This relies on the fact that PostMessage() does
 358  * not actually call the windowproc before the function returns.
 359  */
 360 static HANDLE16 __WSAsyncDBQuery(
 361         HWND hWnd, UINT uMsg,INT int1,LPCSTR ptr1, INT int2, LPCSTR ptr2,
 362         void *sbuf, INT sbuflen, UINT flags
 363 ) {
 364         async_query     *aq = HeapAlloc(GetProcessHeap(),0,sizeof(async_query));
 365         HANDLE  hthread;
 366
 367         aq->hWnd        = hWnd;
 368         aq->uMsg        = uMsg;
 369         aq->int1        = int1;
 370         aq->ptr1        = ptr1;
 371         aq->int2        = int2;
 372         aq->ptr2        = ptr2;
 373         aq->async_handle = ++__ws_async_handle;
 374         aq->flags       = flags;
 375         aq->sbuf        = (SEGPTR)sbuf;
 376         aq->sbuflen     = sbuflen;
 377 #if 1
 378         hthread = CreateThread(NULL,0,_async_queryfun,aq,0,NULL);
 379         if (hthread==INVALID_HANDLE_VALUE)
 380 #endif
 381                 _async_queryfun(aq);
 382         return __ws_async_handle;
 383 }
 384
 385
 386 /***********************************************************************
 387  *       WSAAsyncGetHostByAddr()        (WINSOCK.102)
 388  */
 389 HANDLE16 WINAPI WSAAsyncGetHostByAddr16(HWND16 hWnd, UINT16 uMsg, LPCSTR addr,
 390                                INT16 len, INT16 type, SEGPTR sbuf, INT16 buflen)
 391 {
 392         TRACE("hwnd %04x, msg %04x, addr %08x[%i]\n",
 393                hWnd, uMsg, (unsigned)addr , len );
 394         return __WSAsyncDBQuery(hWnd,uMsg,len,addr,type,NULL,(void*)sbuf,buflen,AQ_NUMBER|AQ_WIN16|AQ_GETHOST);
 395 }
 396
 397 /***********************************************************************
 398  *       WSAAsyncGetHostByAddr()        (WSOCK32.102)
 399  */
 400 HANDLE WINAPI WSAAsyncGetHostByAddr(HWND hWnd, UINT uMsg, LPCSTR addr,
 401                                INT len, INT type, LPSTR sbuf, INT buflen)
 402 {
 403         TRACE("hwnd %04x, msg %04x, addr %08x[%i]\n",
 404                hWnd, uMsg, (unsigned)addr , len );
 405         return __WSAsyncDBQuery(hWnd,uMsg,len,addr,type,NULL,sbuf,buflen,AQ_NUMBER|AQ_WIN32|AQ_GETHOST);
 406 }
 407
 408 /***********************************************************************
 409  *       WSAAsyncGetHostByName()        (WINSOCK.103)
 410  */
 411 HANDLE16 WINAPI WSAAsyncGetHostByName16(HWND16 hWnd, UINT16 uMsg, LPCSTR name,
 412                                       SEGPTR sbuf, INT16 buflen)
 413 {
 414         TRACE("hwnd %04x, msg %04x, host %s, buffer %i\n", hWnd, uMsg, (name)?name:"<null>", (int)buflen );
 415
 416         return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,(void*)sbuf,buflen,AQ_NAME|AQ_WIN16|AQ_GETHOST);
 417 }
 418
 419 /***********************************************************************
 420  *       WSAAsyncGetHostByName32()      (WSOCK32.103)
 421  */
 422 HANDLE WINAPI WSAAsyncGetHostByName(HWND hWnd, UINT uMsg, LPCSTR name,
 423                                         LPSTR sbuf, INT buflen)
 424 {
 425         TRACE("hwnd %04x, msg %08x, host %s, buffer %i\n",
 426                (HWND16)hWnd, uMsg, (name)?name:"<null>", (int)buflen );
 427         return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,sbuf,buflen,AQ_NAME|AQ_WIN32|AQ_GETHOST);
 428 }
 429
 430 /***********************************************************************
 431  *       WSAAsyncGetProtoByName()       (WINSOCK.105)
 432  */
 433 HANDLE16 WINAPI WSAAsyncGetProtoByName16(HWND16 hWnd, UINT16 uMsg, LPCSTR name,
 434                                          SEGPTR sbuf, INT16 buflen)
 435 {
 436         TRACE("hwnd %04x, msg %08x, protocol %s\n",
 437                (HWND16)hWnd, uMsg, (name)?name:"<null>" );
 438         return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,(void*)sbuf,buflen,AQ_GETPROTO|AQ_NAME|AQ_WIN16);
 439 }
 440
 441 /***********************************************************************
 442  *       WSAAsyncGetProtoByName()       (WSOCK32.105)
 443  */
 444 HANDLE WINAPI WSAAsyncGetProtoByName(HWND hWnd, UINT uMsg, LPCSTR name,
 445                                          LPSTR sbuf, INT buflen)
 446 {
 447         TRACE("hwnd %04x, msg %08x, protocol %s\n",
 448                (HWND16)hWnd, uMsg, (name)?name:"<null>" );
 449         return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,sbuf,buflen,AQ_GETPROTO|AQ_NAME|AQ_WIN32);
 450 }
 451
 452
 453 /***********************************************************************
 454  *       WSAAsyncGetProtoByNumber()     (WINSOCK.104)
 455  */
 456 HANDLE16 WINAPI WSAAsyncGetProtoByNumber16(HWND16 hWnd,UINT16 uMsg,INT16 number,
 457                                            SEGPTR sbuf, INT16 buflen)
 458 {
 459         TRACE("hwnd %04x, msg %04x, num %i\n", hWnd, uMsg, number );
 460         return __WSAsyncDBQuery(hWnd,uMsg,number,NULL,0,NULL,(void*)sbuf,buflen,AQ_GETPROTO|AQ_NUMBER|AQ_WIN16);
 461 }
 462
 463 /***********************************************************************
 464  *       WSAAsyncGetProtoByNumber()     (WSOCK32.104)
 465  */
 466 HANDLE WINAPI WSAAsyncGetProtoByNumber(HWND hWnd, UINT uMsg, INT number,
 467                                            LPSTR sbuf, INT buflen)
 468 {
 469         TRACE("hwnd %04x, msg %04x, num %i\n", hWnd, uMsg, number );
 470
 471         return __WSAsyncDBQuery(hWnd,uMsg,number,NULL,0,NULL,sbuf,buflen,AQ_GETPROTO|AQ_NUMBER|AQ_WIN32);
 472 }
 473
 474 /***********************************************************************
 475  *       WSAAsyncGetServByName()        (WINSOCK.107)
 476  */
 477 HANDLE16 WINAPI WSAAsyncGetServByName16(HWND16 hWnd, UINT16 uMsg, LPCSTR name,
 478                                         LPCSTR proto, SEGPTR sbuf, INT16 buflen)
 479 {
 480         TRACE("hwnd %04x, msg %04x, name %s, proto %s\n",
 481                hWnd, uMsg, (name)?name:"<null>", (proto)?proto:"<null>" );
 482
 483         return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,proto,(void*)sbuf,buflen,AQ_GETSERV|AQ_NAME|AQ_WIN16);
 484 }
 485
 486 /***********************************************************************
 487  *       WSAAsyncGetServByName()        (WSOCK32.107)
 488  */
 489 HANDLE WINAPI WSAAsyncGetServByName(HWND hWnd, UINT uMsg, LPCSTR name,
 490                                         LPCSTR proto, LPSTR sbuf, INT buflen)
 491 {
 492         TRACE("hwnd %04x, msg %04x, name %s, proto %s\n",
 493                hWnd, uMsg, (name)?name:"<null>", (proto)?proto:"<null>" );
 494         return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,proto,sbuf,buflen,AQ_GETSERV|AQ_NAME|AQ_WIN32);
 495 }
 496
 497 /***********************************************************************
 498  *       WSAAsyncGetServByPort()        (WINSOCK.106)
 499  */
 500 HANDLE16 WINAPI WSAAsyncGetServByPort16(HWND16 hWnd, UINT16 uMsg, INT16 port,
 501                                         LPCSTR proto, SEGPTR sbuf, INT16 buflen)
 502 {
 503         TRACE("hwnd %04x, msg %04x, port %i, proto %s\n",
 504                hWnd, uMsg, port, (proto)?proto:"<null>" );
 505         return __WSAsyncDBQuery(hWnd,uMsg,port,NULL,0,proto,(void*)sbuf,buflen,AQ_GETSERV|AQ_NUMBER|AQ_WIN16);
 506 }
 507
 508 /***********************************************************************
 509  *       WSAAsyncGetServByPort()        (WSOCK32.106)
 510  */
 511 HANDLE WINAPI WSAAsyncGetServByPort(HWND hWnd, UINT uMsg, INT port,
 512                                         LPCSTR proto, LPSTR sbuf, INT buflen)
 513 {
 514         TRACE("hwnd %04x, msg %04x, port %i, proto %s\n",
 515                hWnd, uMsg, port, (proto)?proto:"<null>" );
 516         return __WSAsyncDBQuery(hWnd,uMsg,port,NULL,0,proto,sbuf,buflen,AQ_GETSERV|AQ_NUMBER|AQ_WIN32);
 517 }
 518
 519 /***********************************************************************
 520  *       WSACancelAsyncRequest()        (WINSOCK.108)(WSOCK32.109)
 521  */
 522 INT WINAPI WSACancelAsyncRequest(HANDLE hAsyncTaskHandle)
 523 {
 524     FIXME("(%08x),stub\n", hAsyncTaskHandle);
 525     return 0;
 526 }
 527
 528 INT16 WINAPI WSACancelAsyncRequest16(HANDLE16 hAsyncTaskHandle)
 529 {
 530     return (HANDLE16)WSACancelAsyncRequest((HANDLE)hAsyncTaskHandle);
 531 }