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