dlls/ole2disp.dll16/ole2disp.c

   1 /*
   2  *      OLE2DISP library
   3  *
   4  *      Copyright 1995  Martin von Loewis
   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "ole2.h"
  29 #include "oleauto.h"
  30 #include "winerror.h"
  31 #include "wownt32.h"
  32 #include "wine/windef16.h"
  33 #include "wine/winbase16.h"
  34
  35 #include "ole2disp.h"
  36
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  40
  41 #define E_OUTOFMEMORY16 MAKE_SCODE(SEVERITY_ERROR, FACILITY_NULL, 2)
  42 #define E_INVALIDARG16  MAKE_SCODE(SEVERITY_ERROR, FACILITY_NULL, 3)
  43
  44 /* 16-bit SAFEARRAY implementation */
  45 typedef struct tagSAFEARRAYBOUND16
  46 {
  47     ULONG cElements;
  48     LONG  lLbound;
  49 } SAFEARRAYBOUND16;
  50
  51 typedef struct tagSAFEARRAY16
  52 {
  53     USHORT cDims;
  54     USHORT fFeatures;
  55     USHORT cbElements;
  56     USHORT cLocks;
  57     ULONG  handle;
  58     SEGPTR pvData;
  59     SAFEARRAYBOUND16 rgsabound[1];
  60 } SAFEARRAY16;
  61
  62 static SEGPTR safearray_alloc(ULONG size)
  63 {
  64     HANDLE16 h;
  65     return WOWGlobalAllocLock16(GPTR, size, &h);
  66 }
  67
  68 static void safearray_free(SEGPTR ptr)
  69 {
  70     WOWGlobalUnlockFree16(ptr);
  71 }
  72
  73 static ULONG safearray_getcellcount(const SAFEARRAY16 *sa)
  74 {
  75     const SAFEARRAYBOUND16 *sab = sa->rgsabound;
  76     USHORT count = sa->cDims;
  77     ULONG cells = 1;
  78
  79     while (count--)
  80     {
  81         if (!sab->cElements)
  82             return 0;
  83         cells *= sab->cElements;
  84         sab++;
  85     }
  86
  87     return cells;
  88 }
  89
  90 static HRESULT safearray_lock(SAFEARRAY16 *sa)
  91 {
  92     if (sa->cLocks == 0xffff)
  93         return E_UNEXPECTED;
  94
  95     sa->cLocks++;
  96     return S_OK;
  97 }
  98
  99 /******************************************************************************
 100  *    SafeArrayGetDim [OLE2DISP.17]
 101  */
 102 USHORT WINAPI SafeArrayGetDim16(SAFEARRAY16 *sa)
 103 {
 104     TRACE("(%p)\n", sa);
 105     return sa->cDims;
 106 }
 107
 108 /******************************************************************************
 109  *    SafeArrayGetElemsize [OLE2DISP.18]
 110  */
 111 USHORT WINAPI SafeArrayGetElemsize16(SAFEARRAY16 *sa)
 112 {
 113     TRACE("(%p)\n", sa);
 114     return sa->cbElements;
 115 }
 116
 117 /******************************************************************************
 118  *    SafeArrayGetUBound [OLE2DISP.19]
 119  */
 120 HRESULT WINAPI SafeArrayGetUBound16(SAFEARRAY16 *sa, UINT16 dim, LONG *ubound)
 121 {
 122     TRACE("(%p, %u, %p)\n", sa, dim, ubound);
 123
 124     if (!sa)
 125         return E_INVALIDARG16;
 126
 127     if (!dim || dim > sa->cDims)
 128         return DISP_E_BADINDEX;
 129
 130     *ubound = sa->rgsabound[sa->cDims - dim].lLbound + sa->rgsabound[sa->cDims - dim].cElements - 1;
 131
 132     return S_OK;
 133 }
 134
 135 /******************************************************************************
 136  *    SafeArrayGetLBound [OLE2DISP.20]
 137  */
 138 HRESULT WINAPI SafeArrayGetLBound16(SAFEARRAY16 *sa, UINT16 dim, LONG *lbound)
 139 {
 140     TRACE("(%p, %u, %p)\n", sa, dim, lbound);
 141
 142     if (!sa)
 143         return E_INVALIDARG16;
 144
 145     if (!dim || dim > sa->cDims)
 146         return DISP_E_BADINDEX;
 147
 148     *lbound = sa->rgsabound[sa->cDims - dim].lLbound;
 149
 150     return S_OK;
 151 }
 152
 153 /******************************************************************************
 154  *    SafeArrayLock [OLE2DISP.21]
 155  */
 156 HRESULT WINAPI SafeArrayLock16(SAFEARRAY16 *sa)
 157 {
 158     TRACE("(%p)\n", sa);
 159
 160     if (!sa)
 161         return E_INVALIDARG16;
 162
 163     return safearray_lock(sa);
 164 }
 165
 166 /******************************************************************************
 167  *    SafeArrayUnlock [OLE2DISP.22]
 168  */
 169 HRESULT WINAPI SafeArrayUnlock16(SAFEARRAY16 *sa)
 170 {
 171     TRACE("(%p)\n", sa);
 172
 173     if (!sa)
 174         return E_INVALIDARG16;
 175
 176     if (sa->cLocks == 0)
 177         return E_UNEXPECTED;
 178
 179     sa->cLocks--;
 180     return S_OK;
 181 }
 182
 183 /******************************************************************************
 184  *    SafeArrayAccessData [OLE2DISP.23]
 185  */
 186 HRESULT WINAPI SafeArrayAccessData16(SAFEARRAY16 *sa, SEGPTR *data)
 187 {
 188     HRESULT hr;
 189
 190     TRACE("(%p, %p)\n", sa, data);
 191
 192     /* arguments are not tested, it crashes if any of them is NULL */
 193
 194     hr = safearray_lock(sa);
 195     if (FAILED(hr))
 196         return hr;
 197
 198     *data = sa->pvData;
 199     return S_OK;
 200 }
 201
 202 /******************************************************************************
 203  *    SafeArrayUnaccessData [OLE2DISP.24]
 204  */
 205 HRESULT WINAPI SafeArrayUnaccessData16(SAFEARRAY16 *sa)
 206 {
 207     TRACE("(%p)\n", sa);
 208     return SafeArrayUnlock16(sa);
 209 }
 210
 211 /******************************************************************************
 212  *    SafeArrayAllocDescriptor [OLE2DISP.38]
 213  */
 214 HRESULT WINAPI SafeArrayAllocDescriptor16(UINT16 dims, SEGPTR *ret)
 215 {
 216     SAFEARRAY16 *sa;
 217     ULONG size;
 218
 219     TRACE("%u, %p\n", dims, ret);
 220
 221     if (!dims)
 222         return E_INVALIDARG16;
 223
 224     size = sizeof(SAFEARRAY16) + sizeof(SAFEARRAYBOUND16) * (dims - 1);
 225     *ret = safearray_alloc(size);
 226     if (!*ret)
 227         return E_OUTOFMEMORY16;
 228
 229     sa = MapSL(*ret);
 230     sa->cDims = dims;
 231     return S_OK;
 232 }
 233
 234 /******************************************************************************
 235  *    SafeArrayAllocData [OLE2DISP.39]
 236  */
 237 HRESULT WINAPI SafeArrayAllocData16(SAFEARRAY16 *sa)
 238 {
 239     ULONG size;
 240
 241     TRACE("%p\n", sa);
 242
 243     if (!sa)
 244         return E_INVALIDARG16;
 245
 246     size = safearray_getcellcount(sa);
 247     sa->pvData = safearray_alloc(size * sa->cbElements);
 248     return sa->pvData ? S_OK : E_OUTOFMEMORY16;
 249 }
 250
 251 /******************************************************************************
 252  *    SafeArrayDestroyDescriptor [OLE2DISP.40]
 253  */
 254 HRESULT WINAPI SafeArrayDestroyDescriptor16(SEGPTR s)
 255 {
 256     TRACE("0x%08x\n", s);
 257
 258     if (s)
 259     {
 260         SAFEARRAY16 *sa = MapSL(s);
 261
 262         if (sa->cLocks)
 263             return DISP_E_ARRAYISLOCKED;
 264
 265         safearray_free(s);
 266     }
 267
 268     return S_OK;
 269 }
 270
 271 /******************************************************************************
 272  *    SafeArrayDestroyData [OLE2DISP.41]
 273  */
 274 HRESULT WINAPI SafeArrayDestroyData16(SAFEARRAY16 *sa)
 275 {
 276     TRACE("%p\n", sa);
 277
 278     if (!sa)
 279         return S_OK;
 280
 281     if (sa->cLocks)
 282         return DISP_E_ARRAYISLOCKED;
 283
 284     if (!(sa->fFeatures & FADF_STATIC))
 285         safearray_free(sa->pvData);
 286
 287     return S_OK;
 288 }
 289
 290 /* This implementation of the BSTR API is 16-bit only. It
 291    represents BSTR as a 16:16 far pointer, and the strings
 292    as ISO-8859 */
 293
 294 /******************************************************************************
 295  *              BSTR_AllocBytes [Internal]
 296  */
 297 static BSTR16 BSTR_AllocBytes(int n)
 298 {
 299     void *ptr = HeapAlloc( GetProcessHeap(), 0, n );
 300     return (BSTR16)MapLS(ptr);
 301 }
 302
 303 /******************************************************************************
 304  * BSTR_Free [INTERNAL]
 305  */
 306 static void BSTR_Free(BSTR16 in)
 307 {
 308     void *ptr = MapSL( (SEGPTR)in );
 309     UnMapLS( (SEGPTR)in );
 310     HeapFree( GetProcessHeap(), 0, ptr );
 311 }
 312
 313 /******************************************************************************
 314  * BSTR_GetAddr [INTERNAL]
 315  */
 316 static void* BSTR_GetAddr(BSTR16 in)
 317 {
 318     return in ? MapSL((SEGPTR)in) : 0;
 319 }
 320
 321 /******************************************************************************
 322  *              SysAllocString  [OLE2DISP.2]
 323  *
 324  * Create a BSTR16 from an OLESTR16 (16 Bit).
 325  *
 326  * PARAMS
 327  *  oleStr [I] Source to create BSTR16 from
 328  *
 329  * RETURNS
 330  *  Success: A BSTR16 allocated with SysAllocStringLen16().
 331  *  Failure: NULL, if oleStr is NULL.
 332  */
 333 BSTR16 WINAPI SysAllocString16(LPCOLESTR16 oleStr)
 334 {
 335         BSTR16 out;
 336
 337         if (!oleStr) return 0;
 338
 339         out = BSTR_AllocBytes(strlen(oleStr)+1);
 340         if (!out) return 0;
 341         strcpy(BSTR_GetAddr(out),oleStr);
 342         return out;
 343 }
 344
 345 /******************************************************************************
 346  *              SysReallocString        [OLE2DISP.3]
 347  *
 348  * Change the length of a previously created BSTR16 (16 Bit).
 349  *
 350  * PARAMS
 351  *  pbstr  [I] BSTR16 to change the length of
 352  *  oleStr [I] New source for pbstr
 353  *
 354  * RETURNS
 355  *  Success: 1
 356  *  Failure: 0.
 357  *
 358  * NOTES
 359  *  SysAllocStringStringLen16().
 360  */
 361 INT16 WINAPI SysReAllocString16(LPBSTR16 pbstr,LPCOLESTR16 oleStr)
 362 {
 363         BSTR16 new=SysAllocString16(oleStr);
 364         BSTR_Free(*pbstr);
 365         *pbstr=new;
 366         return 1;
 367 }
 368
 369 /******************************************************************************
 370  *              SysAllocStringLen       [OLE2DISP.4]
 371  *
 372  * Create a BSTR16 from an OLESTR16 of a given character length (16 Bit).
 373  *
 374  * PARAMS
 375  *  oleStr [I] Source to create BSTR16 from
 376  *  len    [I] Length of oleStr in wide characters
 377  *
 378  * RETURNS
 379  *  Success: A newly allocated BSTR16 from SysAllocStringByteLen16()
 380  *  Failure: NULL, if len is >= 0x80000000, or memory allocation fails.
 381  *
 382  * NOTES
 383  *  See SysAllocStringByteLen16().
 384  */
 385 BSTR16 WINAPI SysAllocStringLen16(const char *oleStr, int len)
 386 {
 387     BSTR16 out=BSTR_AllocBytes(len+1);
 388
 389     if (!out)
 390         return 0;
 391
 392     /*
 393     * Copy the information in the buffer.
 394     * Since it is valid to pass a NULL pointer here, we'll initialize the
 395     * buffer to nul if it is the case.
 396     */
 397     if (oleStr != 0)
 398         strcpy(BSTR_GetAddr(out),oleStr);
 399     else
 400         memset(BSTR_GetAddr(out), 0, len+1);
 401
 402     return out;
 403 }
 404
 405 /******************************************************************************
 406  *              SysReAllocStringLen     [OLE2DISP.5]
 407  *
 408  * Change the length of a previously created BSTR16 (16 Bit).
 409  *
 410  * PARAMS
 411  *  pbstr  [I] BSTR16 to change the length of
 412  *  oleStr [I] New source for pbstr
 413  *  len    [I] Length of oleStr in characters
 414  *
 415  * RETURNS
 416  *  Success: 1. The size of pbstr is updated.
 417  *  Failure: 0, if len >= 0x8000 or memory allocation fails.
 418  *
 419  * NOTES
 420  *  See SysAllocStringByteLen16().
 421  *  *pbstr may be changed by this function.
 422  */
 423 int WINAPI SysReAllocStringLen16(BSTR16 *old,const char *in,int len)
 424 {
 425         /* FIXME: Check input length */
 426         BSTR16 new=SysAllocStringLen16(in,len);
 427         BSTR_Free(*old);
 428         *old=new;
 429         return 1;
 430 }
 431
 432 /******************************************************************************
 433  *              SysFreeString   [OLE2DISP.6]
 434  *
 435  * Free a BSTR16 (16 Bit).
 436  *
 437  * PARAMS
 438  *  str [I] String to free.
 439  *
 440  * RETURNS
 441  *  Nothing.
 442  */
 443 void WINAPI SysFreeString16(BSTR16 str)
 444 {
 445         BSTR_Free(str);
 446 }
 447
 448 /******************************************************************************
 449  *              SysStringLen    [OLE2DISP.7]
 450  *
 451  * Get the allocated length of a BSTR16 in characters (16 Bit).
 452  *
 453  * PARAMS
 454  *  str [I] BSTR16 to find the length of
 455  *
 456  * RETURNS
 457  *  The allocated length of str, or 0 if str is NULL.
 458  */
 459 int WINAPI SysStringLen16(BSTR16 str)
 460 {
 461         return strlen(BSTR_GetAddr(str));
 462 }
 463
 464 /******************************************************************************
 465  * VariantChangeType [OLE2DISP.12]
 466  */
 467 HRESULT WINAPI VariantChangeType16(VARIANTARG *vargDest, VARIANTARG *varSrc, unsigned short flags, VARTYPE vt)
 468 {
 469     FIXME("stub: (%p, %p, %d, %d)\n", vargDest, varSrc, flags, vt);
 470     return E_NOTIMPL;
 471 }
 472
 473
 474 /******************************************************************************
 475  * CreateDispTypeInfo [OLE2DISP.31]
 476  */
 477 HRESULT WINAPI CreateDispTypeInfo16(
 478         INTERFACEDATA *pidata,
 479         LCID lcid,
 480         ITypeInfo **pptinfo)
 481 {
 482         FIXME("(%p,%d,%p),stub\n",pidata,lcid,pptinfo);
 483         return E_NOTIMPL;
 484 }
 485
 486 /******************************************************************************
 487  * CreateStdDispatch [OLE2DISP.32]
 488  */
 489 HRESULT WINAPI CreateStdDispatch16(
 490         IUnknown* punkOuter,
 491         void* pvThis,
 492         ITypeInfo* ptinfo,
 493         IUnknown** ppunkStdDisp)
 494 {
 495         FIXME("(%p,%p,%p,%p),stub\n",punkOuter, pvThis, ptinfo,
 496                ppunkStdDisp);
 497         return 0;
 498 }
 499
 500 /******************************************************************************
 501  * RegisterActiveObject [OLE2DISP.35]
 502  */
 503 HRESULT WINAPI RegisterActiveObject16(
 504         IUnknown *punk, REFCLSID rclsid, DWORD dwFlags, unsigned long *pdwRegister
 505 ) {
 506         FIXME("(%p,%s,0x%08x,%p):stub\n",punk,debugstr_guid(rclsid),dwFlags,pdwRegister);
 507         return E_NOTIMPL;
 508 }
 509
 510 /******************************************************************************
 511  * VariantChangeTypeEx [OLE2DISP.108]
 512  */
 513 HRESULT WINAPI VariantChangeTypeEx16(VARIANTARG *dest, const VARIANTARG *src, LCID lcid, USHORT flags, VARTYPE vt)
 514 {
 515         FIXME("stub: %p %p %d %d %d\n", dest, src, lcid, flags, vt);
 516         return E_INVALIDARG;
 517 }
 518
 519 /******************************************************************************
 520  * SetErrorInfo [OLE2DISP.110]
 521  */
 522 HRESULT WINAPI SetErrorInfo16(ULONG dwReserved, IErrorInfo *perrinfo)
 523 {
 524         FIXME("stub: (%d, %p)\n", dwReserved, perrinfo);
 525         return E_INVALIDARG;
 526 }
 527
 528 /******************************************************************************
 529  * VariantInit [OLE2DISP.8]
 530  */
 531 void WINAPI VariantInit16(VARIANTARG16 *v)
 532 {
 533     TRACE("(%p)\n", v);
 534     v->vt = VT_EMPTY;
 535 }