ole/safearray.c

   1 /*************************************************************************
   2  * OLE Automation
   3  * SafeArray Implementation
   4  *
   5  * This file contains the implementation of the SafeArray interface.
   6  *
   7  * Copyright 1999 Sylvain St-Germain
   8  */
   9
  10 #include <wintypes.h>
  11 #include <winerror.h>
  12 #include <winbase.h>
  13 #include <oleauto.h>
  14 #include <ole.h>
  15 #include <strings.h>
  16 #include <stdio.h>
  17 #include <debug.h>
  18 #include "wine/obj_base.h"
  19
  20 /* Localy used methods */
  21 static INT32
  22 endOfDim(LONG *coor, SAFEARRAYBOUND *mat, LONG dim, LONG realDim);
  23
  24 static ULONG
  25 calcDisplacement(LONG *coor, SAFEARRAYBOUND *mat, LONG dim);
  26
  27 static BOOL32
  28 isPointer(USHORT feature);
  29
  30 static INT32
  31 getFeatures(VARTYPE vt);
  32
  33 static BOOL32
  34 validCoordinate(LONG *coor, SAFEARRAY *psa);
  35
  36 static BOOL32
  37 resizeSafeArray(SAFEARRAY *psa, LONG lDelta);
  38
  39 static BOOL32
  40 validArg(SAFEARRAY *psa);
  41
  42 static ULONG
  43 getArraySize(SAFEARRAY *psa);
  44
  45 static HRESULT
  46 duplicateData(SAFEARRAY *psa, SAFEARRAY **ppsaOut);
  47
  48 /* Association between VARTYPE and their size.
  49    A size of zero is defined for the unsupported types.  */
  50
  51 #define VARTYPE_NOT_SUPPORTED 0
  52 static ULONG VARTYPE_SIZE[43] =
  53 {
  54   /* this is taken from wtypes.h.  Only [S]es are supported by the SafeArray */
  55 VARTYPE_NOT_SUPPORTED,  /* VT_EMPTY    [V]   [P]    nothing                     */
  56 VARTYPE_NOT_SUPPORTED,  /* VT_NULL     [V]   [P]    SQL style Nul       */
  57 2,                          /* VT_I2       [V][T][P][S] 2 byte signed int */
  58 4,                          /* VT_I4       [V][T][P][S] 4 byte signed int */
  59 4,                          /* VT_R4       [V][T][P][S] 4 byte real     */
  60 8,                          /* VT_R8       [V][T][P][S] 8 byte real     */
  61 8,                      /* VT_CY       [V][T][P][S] currency */
  62 8,                          /* VT_DATE     [V][T][P][S] date */
  63 4,                          /* VT_BSTR     [V][T][P][S] OLE Automation string*/
  64 4,                          /* VT_DISPATCH [V][T][P][S] IDispatch *     */
  65 4,                      /* VT_ERROR    [V][T]   [S] SCODE       */
  66 4,                          /* VT_BOOL     [V][T][P][S] True=-1, False=0*/
  67 24,                     /* VT_VARIANT  [V][T][P][S] VARIANT *   */
  68 4,                          /* VT_UNKNOWN  [V][T]   [S] IUnknown * */
  69 16,                         /* VT_DECIMAL  [V][T]   [S] 16 byte fixed point     */
  70 VARTYPE_NOT_SUPPORTED,  /* VT_I1          [T]       signed char */
  71 1,                          /* VT_UI1      [V][T][P][S] unsigned char                   */
  72 VARTYPE_NOT_SUPPORTED,  /* VT_UI2         [T][P]    unsigned short      */
  73 VARTYPE_NOT_SUPPORTED,  /* VT_UI4         [T][P]    unsigned short      */
  74 VARTYPE_NOT_SUPPORTED,  /* VT_I8          [T][P]    signed 64-bit int                   */
  75 VARTYPE_NOT_SUPPORTED,  /* VT_UI8         [T][P]    unsigned 64-bit int         */
  76 VARTYPE_NOT_SUPPORTED,  /* VT_INT         [T]       signed machine int          */
  77 VARTYPE_NOT_SUPPORTED,  /* VT_UINT        [T]       unsigned machine int        */
  78 VARTYPE_NOT_SUPPORTED,  /* VT_VOID        [T]       C style void                        */
  79 VARTYPE_NOT_SUPPORTED,  /* VT_HRESULT     [T]       Standard return type        */
  80 VARTYPE_NOT_SUPPORTED,  /* VT_PTR         [T]       pointer type                        */
  81 VARTYPE_NOT_SUPPORTED,  /* VT_SAFEARRAY   [T]       (use VT_ARRAY in VARIANT)*/
  82 VARTYPE_NOT_SUPPORTED,  /* VT_CARRAY      [T]       C style array                       */
  83 VARTYPE_NOT_SUPPORTED,  /* VT_USERDEFINED [T]       user defined type                   */
  84 VARTYPE_NOT_SUPPORTED,  /* VT_LPSTR       [T][P]    null terminated string      */
  85 VARTYPE_NOT_SUPPORTED,  /* VT_LPWSTR      [T][P]    wide null term string               */
  86 VARTYPE_NOT_SUPPORTED,  /* VT_FILETIME       [P]    FILETIME                    */
  87 VARTYPE_NOT_SUPPORTED,  /* VT_BLOB           [P]    Length prefixed bytes */
  88 VARTYPE_NOT_SUPPORTED,  /* VT_STREAM         [P]    Name of stream follows              */
  89 VARTYPE_NOT_SUPPORTED,  /* VT_STORAGE        [P]    Name of storage follows     */
  90 VARTYPE_NOT_SUPPORTED,  /* VT_STREAMED_OBJECT[P]    Stream contains an object*/
  91 VARTYPE_NOT_SUPPORTED,  /* VT_STORED_OBJECT  [P]    Storage contains object*/
  92 VARTYPE_NOT_SUPPORTED,  /* VT_BLOB_OBJECT    [P]    Blob contains an object*/
  93 VARTYPE_NOT_SUPPORTED,  /* VT_CF             [P]    Clipboard format                    */
  94 VARTYPE_NOT_SUPPORTED,  /* VT_CLSID          [P]    A Class ID                  */
  95 VARTYPE_NOT_SUPPORTED,  /* VT_VECTOR         [P]    simple counted array                */
  96 VARTYPE_NOT_SUPPORTED,  /* VT_ARRAY    [V]          SAFEARRAY*                  */
  97 VARTYPE_NOT_SUPPORTED   /* VT_BYREF    [V]          void* for local use */
  98 };
  99
 100 /*************************************************************************
 101  * Allocate the appropriate amount of memory for the SafeArray descriptor
 102  */
 103 HRESULT WINAPI SafeArrayAllocDescriptor32(
 104   UINT32    cDims,
 105   SAFEARRAY **ppsaOut)
 106 {
 107   SAFEARRAYBOUND *sab;
 108   LONG allocSize = 0;
 109
 110   /* SAFEARRAY + SAFEARRAYBOUND * (cDims -1) ( -1 because there is already one
 111                                              ( in SAFEARRAY struct */
 112   allocSize = sizeof(**ppsaOut) + (sizeof(*sab) * (cDims-1));
 113
 114   /* Allocate memory for SAFEARRAY struc */
 115   if(( (*ppsaOut)=HeapAlloc(
 116         GetProcessHeap(), HEAP_ZERO_MEMORY, allocSize)) == NULL){
 117     return(E_UNEXPECTED);
 118   }
 119   TRACE(ole,"SafeArray: %lu bytes allocated for descriptor.\n", allocSize);
 120
 121   return(S_OK);
 122 }
 123
 124 /*************************************************************************
 125  * Allocate the appropriate amount of data for the SafeArray data
 126  */
 127 HRESULT WINAPI SafeArrayAllocData32(
 128   SAFEARRAY *psa)
 129 {
 130   ULONG  ulWholeArraySize;   /* to store the size of the whole thing */
 131
 132   if(! validArg(psa))
 133     return E_INVALIDARG;
 134
 135   ulWholeArraySize = getArraySize(psa);
 136
 137   /* Allocate memory for the data itself */
 138   if((psa->pvData = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
 139         psa->cbElements*ulWholeArraySize)) == NULL)
 140     return(E_UNEXPECTED);
 141
 142   TRACE(ole, "SafeArray: %lu bytes allocated for data at %p (%lu objects).\n",
 143     psa->cbElements*ulWholeArraySize, psa->pvData, ulWholeArraySize);
 144
 145   return(S_OK);
 146 }
 147
 148 /*************************************************************************
 149  * Create a SafeArray object by encapsulating AllocDescriptor and AllocData
 150  */
 151 SAFEARRAY* WINAPI SafeArrayCreate32(
 152   VARTYPE        vt,
 153   UINT32         cDims,
 154   SAFEARRAYBOUND *rgsabound)
 155 {
 156   SAFEARRAY *psa;
 157   HRESULT   hRes;
 158   USHORT    cDim;
 159
 160   /* Validate supported VARTYPE */
 161   if ( VARTYPE_SIZE[vt] == VARTYPE_NOT_SUPPORTED )
 162     return NULL;
 163
 164   /* Allocate memory for the array descriptor */
 165   if( FAILED( hRes = SafeArrayAllocDescriptor32(cDims, &psa)))
 166     return NULL;
 167
 168   /* setup data members... */
 169   psa->cDims     = cDims;
 170   psa->fFeatures = getFeatures(vt);
 171   psa->cLocks    = 0;
 172   psa->pvData    = NULL;
 173   psa->cbElements= VARTYPE_SIZE[vt];
 174
 175   /* Invert the bounds ... */
 176   for(cDim=0; cDim < psa->cDims; cDim++) {
 177     psa->rgsabound[cDim].cElements = rgsabound[psa->cDims-cDim-1].cElements;
 178     psa->rgsabound[cDim].lLbound   = rgsabound[psa->cDims-cDim-1].lLbound;
 179   }
 180
 181   /* allocate memory for the data... */
 182   if( FAILED( hRes = SafeArrayAllocData32(psa))) {
 183     SafeArrayDestroyDescriptor32(psa);
 184     return NULL;
 185   }
 186
 187   return(psa);
 188 }
 189
 190 /*************************************************************************
 191  * Frees the memory associated with the descriptor.
 192  */
 193 HRESULT WINAPI SafeArrayDestroyDescriptor32(
 194   SAFEARRAY *psa)
 195 {
 196   /* Check for lockness before to free... */
 197   if(psa->cLocks > 0)
 198     return DISP_E_ARRAYISLOCKED;
 199
 200   /* The array is unlocked, then, deallocate memory */
 201   if(HeapFree( GetProcessHeap(), 0, psa) == FALSE)
 202     return E_UNEXPECTED;
 203
 204   return(S_OK);
 205 }
 206
 207
 208 /*************************************************************************
 209  * Increment the lock counter
 210  *
 211  * Doc says (MSDN Library ) that psa->pvData should be made available (!= NULL)
 212  * only when psa->cLocks is > 0... I don't get it since pvData is allocated
 213  * before the array is locked, therefore
 214  */
 215 HRESULT WINAPI SafeArrayLock32(
 216   SAFEARRAY *psa)
 217 {
 218   if(! validArg(psa))
 219     return E_INVALIDARG;
 220
 221   psa->cLocks++;
 222
 223   return(S_OK);
 224 }
 225
 226 /*************************************************************************
 227  * Decrement the lock counter
 228  */
 229 HRESULT WINAPI SafeArrayUnlock32(
 230   SAFEARRAY *psa)
 231 {
 232   if(! validArg(psa))
 233     return E_INVALIDARG;
 234
 235   if (psa->cLocks > 0)
 236     psa->cLocks--;
 237
 238   return(S_OK);
 239 }
 240
 241
 242 /*************************************************************************
 243  * Set the data at the given coordinate
 244  */
 245 HRESULT WINAPI SafeArrayPutElement32(
 246   SAFEARRAY *psa,
 247   LONG      *rgIndices,
 248   void      *pv)
 249 {
 250   ULONG stepCountInSAData     = 0;    /* Number of array item to skip to get to
 251                                          the desired one... */
 252   PVOID elementStorageAddress = NULL; /* Adress to store the data */
 253   BSTR32  pbstrReAllocStr     = NULL; /* BSTR reallocated */
 254
 255   /* Validate the index given */
 256   if(! validCoordinate(rgIndices, psa))
 257     return DISP_E_BADINDEX;
 258   if(! validArg(psa))
 259     return E_INVALIDARG;
 260
 261   if( SafeArrayLock32(psa) == S_OK) {
 262
 263     /* Figure out the number of items to skip */
 264     stepCountInSAData = calcDisplacement(rgIndices, psa->rgsabound, psa->cDims);
 265
 266     /* Figure out the number of byte to skip ... */
 267     elementStorageAddress = psa->pvData+(stepCountInSAData*psa->cbElements);
 268
 269     if(isPointer(psa->fFeatures)) { /* increment ref count for this pointer */
 270
 271       *((VOID**)elementStorageAddress) = *(VOID**)pv;
 272       IUnknown_AddRef( *(IUnknown**)pv);
 273
 274     } else {
 275
 276       if(psa->fFeatures == FADF_BSTR) { /* Create a new object */
 277
 278         if((pbstrReAllocStr = SysAllocString32( (OLECHAR32*)pv )) == NULL) {
 279           SafeArrayUnlock32(psa);
 280           return E_OUTOFMEMORY;
 281         } else
 282           *((BSTR32*)elementStorageAddress) = pbstrReAllocStr;
 283
 284       } else /* dupplicate the memory */
 285         memcpy(elementStorageAddress, pv, SafeArrayGetElemsize32(psa) );
 286     }
 287
 288   } else {
 289     ERR(ole, "SafeArray: Cannot lock array....\n");
 290     return E_UNEXPECTED; /* UNDOC error condition */
 291   }
 292
 293   TRACE(ole,"SafeArray: item put at adress %p.\n",elementStorageAddress);
 294   return SafeArrayUnlock32(psa);
 295 }
 296
 297
 298 /*************************************************************************
 299  * Return the data element corresponding the the given coordinate
 300  */
 301 HRESULT WINAPI SafeArrayGetElement32(
 302   SAFEARRAY *psa,
 303   LONG      *rgIndices,
 304   void      *pv)
 305 {
 306   ULONG stepCountInSAData     = 0;    /* Number of array item to skip to get to
 307                                          the desired one... */
 308   PVOID elementStorageAddress = NULL; /* Adress to store the data */
 309   BSTR32  pbstrReturnedStr    = NULL; /* BSTR reallocated */
 310
 311   if(! validArg(psa))
 312     return E_INVALIDARG;
 313
 314   if(! validCoordinate(rgIndices, psa)) /* Validate the index given */
 315     return(DISP_E_BADINDEX);
 316
 317   if( SafeArrayLock32(psa) == S_OK) {
 318
 319     /* Figure out the number of items to skip */
 320     stepCountInSAData = calcDisplacement(rgIndices, psa->rgsabound, psa->cDims);
 321
 322     /* Figure out the number of byte to skip ... */
 323     elementStorageAddress = psa->pvData+(stepCountInSAData*psa->cbElements);
 324
 325     if( psa->fFeatures == FADF_BSTR) {           /* reallocate the obj */
 326       if( (pbstrReturnedStr =
 327           SysAllocString32( *(OLECHAR32**)elementStorageAddress )) == NULL) {
 328         SafeArrayUnlock32(psa);
 329         return E_OUTOFMEMORY;
 330       } else
 331         *((BSTR32*)pv) = pbstrReturnedStr;
 332
 333     } else if( isPointer(psa->fFeatures) )       /* simply copy the pointer */
 334        pv = *((PVOID*)elementStorageAddress);
 335     else                                         /* copy the bytes */
 336       memcpy(pv, elementStorageAddress, SafeArrayGetElemsize32(psa) );
 337
 338   } else {
 339     ERR(ole, "SafeArray: Cannot lock array....\n");
 340     return E_UNEXPECTED; /* UNDOC error condition */
 341   }
 342
 343   return( SafeArrayUnlock32(psa) );
 344 }
 345
 346 /*************************************************************************
 347  * return the UP bound for a given array dimension
 348  */
 349 HRESULT WINAPI SafeArrayGetUBound32(
 350   SAFEARRAY *psa,
 351   UINT32    nDim,
 352   LONG      *plUbound)
 353 {
 354   if(! validArg(psa))
 355     return E_INVALIDARG;
 356
 357   if(nDim > psa->cDims)
 358     return DISP_E_BADINDEX;
 359
 360   *plUbound = psa->rgsabound[nDim].lLbound +
 361               psa->rgsabound[nDim].cElements - 1;
 362
 363   return S_OK;
 364 }
 365
 366 /*************************************************************************
 367  * Return the LO bound for a given array dimension
 368  */
 369 HRESULT WINAPI SafeArrayGetLBound32(
 370   SAFEARRAY *psa,
 371   UINT32    nDim,
 372   LONG      *plLbound)
 373 {
 374   if(! validArg(psa))
 375     return E_INVALIDARG;
 376
 377   if(nDim > psa->cDims)
 378     return DISP_E_BADINDEX;
 379
 380   *plLbound = psa->rgsabound[nDim].lLbound;
 381   return S_OK;
 382 }
 383
 384 /*************************************************************************
 385  * returns the number of dimension in the array
 386  */
 387 UINT32 WINAPI SafeArrayGetDim32(
 388   SAFEARRAY * psa)
 389 {
 390   return psa->cDims;
 391 }
 392
 393 /*************************************************************************
 394  * Return the size of the element in the array
 395  */
 396 UINT32 WINAPI SafeArrayGetElemsize32(
 397   SAFEARRAY * psa)
 398 {
 399   return psa->cbElements;
 400 }
 401
 402 /*************************************************************************
 403  * increment the access count and return the data
 404  */
 405 HRESULT WINAPI SafeArrayAccessData32(
 406   SAFEARRAY *psa,
 407   void      **ppvData)
 408 {
 409   HRESULT hRes;
 410
 411   if(! validArg(psa))
 412     return E_INVALIDARG;
 413
 414   hRes = SafeArrayLock32(psa);
 415
 416   switch (hRes) {
 417     case S_OK:
 418       (*ppvData) = psa->pvData;
 419       break;
 420     case E_INVALIDARG:
 421       (*ppvData) = NULL;
 422       return E_INVALIDARG;
 423   }
 424
 425   return S_OK;
 426 }
 427
 428
 429 /*************************************************************************
 430  * Decrement the access count
 431  */
 432 HRESULT WINAPI SafeArrayUnaccessData32(
 433   SAFEARRAY * psa)
 434 {
 435   if(! validArg(psa))
 436     return E_INVALIDARG;
 437
 438   return(SafeArrayUnlock32(psa));
 439 }
 440
 441 /************************************************************************
 442  * Return a pointer to the element at rgIndices
 443  */
 444 HRESULT WINAPI SafeArrayPtrOfIndex32(
 445   SAFEARRAY *psa,
 446   LONG      *rgIndices,
 447   void      **ppvData)
 448 {
 449   ULONG stepCountInSAData     = 0;    /* Number of array item to skip to get to
 450                                          the desired one... */
 451
 452   if(! validArg(psa))
 453     return E_INVALIDARG;
 454
 455   if(! validCoordinate(rgIndices, psa))
 456     return DISP_E_BADINDEX;
 457
 458   /* Figure out the number of items to skip */
 459   stepCountInSAData = calcDisplacement(rgIndices, psa->rgsabound, psa->cDims);
 460
 461   *ppvData = psa->pvData+(stepCountInSAData*psa->cbElements);
 462
 463   return S_OK;
 464 }
 465
 466 /************************************************************************
 467  * Frees the memory data bloc
 468  */
 469 HRESULT WINAPI SafeArrayDestroyData32(
 470   SAFEARRAY *psa)
 471 {
 472   HRESULT  hRes;
 473   ULONG    ulWholeArraySize; /* count spot in array  */
 474   ULONG    ulDataIter;       /* to iterate the data space */
 475   IUnknown *punk;
 476   BSTR32   bstr;
 477
 478   if(! validArg(psa))
 479     return E_INVALIDARG;
 480
 481   if(psa->cLocks > 0)
 482     return DISP_E_ARRAYISLOCKED;
 483
 484   ulWholeArraySize = getArraySize(psa);
 485
 486   if(isPointer(psa->fFeatures)) {           /* release the pointers */
 487
 488     for(ulDataIter=0; ulDataIter < ulWholeArraySize; ulDataIter++) {
 489       punk = *(IUnknown**)(psa->pvData+(ulDataIter*(psa->cbElements)));
 490
 491       if( punk != NULL)
 492         IUnknown_Release(punk);
 493     }
 494
 495   } else if(psa->fFeatures & FADF_BSTR) {  /* deallocate the obj */
 496
 497     for(ulDataIter=0; ulDataIter < ulWholeArraySize; ulDataIter++) {
 498       bstr = *(BSTR32*)(psa->pvData+(ulDataIter*(psa->cbElements)));
 499
 500       if( bstr != NULL)
 501         SysFreeString32( bstr );
 502     }
 503   }
 504
 505   /* check if this array is a Vector, in which case do not free the data
 506      block since it has been allocated by AllocDescriptor and therefore
 507      deserve to be freed by DestroyDescriptor */
 508   if(!(psa->fFeatures & FADF_FIXEDSIZE)) { /* Set when we do CreateVector */
 509
 510     /* free the whole chunk */
 511     if((hRes = HeapFree( GetProcessHeap(), 0, psa->pvData)) == 0) /*falied*/
 512       return E_UNEXPECTED; /* UNDOC error condition */
 513
 514     psa->pvData = NULL;
 515   }
 516
 517   return S_OK;
 518 }
 519
 520 /************************************************************************
 521  * Copy the psaSource's data block into psaTarget if dimension and size
 522  * permits it.
 523  */
 524 HRESULT WINAPI SafeArrayCopyData32(
 525   SAFEARRAY *psaSource,
 526   SAFEARRAY **psaTarget)
 527 {
 528   USHORT   cDimCount;        /* looper */
 529   LONG     lDelta;           /* looper */
 530   IUnknown *punk;
 531   ULONG    ulWholeArraySize; /* Number of item in SA */
 532   BSTR32   bstr;
 533
 534   if(! (validArg(psaSource) && validArg(*psaTarget)) )
 535     return E_INVALIDARG;
 536
 537   if(SafeArrayGetDim32(psaSource) != SafeArrayGetDim32(*psaTarget))
 538     return E_INVALIDARG;
 539
 540   ulWholeArraySize = getArraySize(psaSource);
 541
 542   /* The two arrays boundaries must be of same lenght */
 543   for(cDimCount=0;cDimCount < psaSource->cDims; cDimCount++)
 544     if( psaSource->rgsabound[cDimCount].cElements !=
 545       (*psaTarget)->rgsabound[cDimCount].cElements)
 546       return E_INVALIDARG;
 547
 548   if( isPointer((*psaTarget)->fFeatures) ) {         /* the target contains ptr
 549                                                         that must be released */
 550     for(lDelta=0;lDelta < ulWholeArraySize; lDelta++) {
 551       punk = *(IUnknown**)
 552         ((*psaTarget)->pvData + (lDelta * (*psaTarget)->cbElements));
 553
 554       if( punk != NULL)
 555         IUnknown_Release(punk);
 556     }
 557
 558   } else if( (*psaTarget)->fFeatures & FADF_BSTR) {  /* the target contain BSTR
 559                                                         that must be freed */
 560     for(lDelta=0;lDelta < ulWholeArraySize; lDelta++) {
 561       bstr =
 562         *(BSTR32*)((*psaTarget)->pvData + (lDelta * (*psaTarget)->cbElements));
 563
 564       if( bstr != NULL)
 565         SysFreeString32( bstr );
 566     }
 567   }
 568
 569   return duplicateData(psaSource, psaTarget);
 570 }
 571
 572 /************************************************************************
 573  * Deallocates all memory reserved for the SafeArray
 574  */
 575 HRESULT WINAPI SafeArrayDestroy32(
 576   SAFEARRAY * psa)
 577 {
 578   HRESULT hRes;
 579
 580   if(! validArg(psa))
 581     return E_INVALIDARG;
 582
 583   if(psa->cLocks > 0)
 584     return DISP_E_ARRAYISLOCKED;
 585
 586   if((hRes = SafeArrayDestroyData32( psa )) == S_OK)
 587     if((hRes = SafeArrayDestroyDescriptor32( psa )) == S_OK)
 588       return S_OK;
 589
 590   return E_UNEXPECTED; /* UNDOC error condition */
 591 }
 592
 593 /************************************************************************
 594  * Make a dupplicate of a SafeArray
 595  */
 596 HRESULT WINAPI SafeArrayCopy32(
 597   SAFEARRAY *psa,
 598   SAFEARRAY **ppsaOut)
 599 {
 600   HRESULT hRes;
 601   DWORD   dAllocSize;
 602
 603   if(! validArg(psa))
 604     return E_INVALIDARG;
 605
 606   if((hRes=SafeArrayAllocDescriptor32(psa->cDims, ppsaOut)) == S_OK){
 607
 608     /* Duplicate the SAFEARRAY struc */
 609     memcpy(*ppsaOut, psa,
 610             sizeof(*psa)+(sizeof(*(psa->rgsabound))*(psa->cDims-1)));
 611
 612     (*ppsaOut)->pvData = NULL; /* do not point to the same data area */
 613
 614     /* Get the allocated memory size for source and allocate it for target */
 615     dAllocSize = HeapSize(GetProcessHeap(), 0, psa->pvData);
 616     (*ppsaOut)->pvData =
 617       HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dAllocSize);
 618
 619     if( (*ppsaOut)->pvData != NULL) {   /* HeapAlloc succeed */
 620
 621       if( (hRes=duplicateData(psa, ppsaOut)) != S_OK) { /* E_OUTOFMEMORY */
 622         HeapFree(GetProcessHeap(), 0, (*ppsaOut)->pvData);
 623         (*ppsaOut)->pvData = NULL;
 624         SafeArrayDestroyDescriptor32(*ppsaOut);
 625         return hRes;
 626       }
 627
 628     } else { /* failed to allocate or dupplicate... */
 629       SafeArrayDestroyDescriptor32(*ppsaOut);
 630       return E_UNEXPECTED; /* UNDOC error condition */
 631     }
 632   } else { /* failed to allocate mem for descriptor */
 633     return E_OUTOFMEMORY; /* UNDOC error condiftion */
 634   }
 635
 636   return S_OK;
 637 }
 638
 639 /************************************************************************
 640  * Creates a one dimension safearray where the data is next to the
 641  * SAFEARRAY structure.
 642  */
 643 SAFEARRAY* WINAPI SafeArrayCreateVector32(
 644   VARTYPE vt,
 645   LONG    lLbound,
 646   ULONG   cElements)
 647 {
 648   SAFEARRAY *psa;
 649
 650   /* Validate supported VARTYPE */
 651   if ( VARTYPE_SIZE[vt] == VARTYPE_NOT_SUPPORTED )
 652     return NULL;
 653
 654   /* Allocate memory for the array descriptor and data contiguously  */
 655   if( FAILED( psa = HeapAlloc( GetProcessHeap(),
 656                       HEAP_ZERO_MEMORY,
 657                       (sizeof(*psa) + (VARTYPE_SIZE[vt] * cElements))))) {
 658     return NULL;
 659   }
 660
 661   /* setup data members... */
 662   psa->cDims      = 1; /* always and forever */
 663   psa->fFeatures  = getFeatures(vt) | FADF_FIXEDSIZE;
 664   psa->cLocks     = 0;
 665   psa->pvData     = psa+sizeof(*psa);
 666   psa->cbElements = VARTYPE_SIZE[vt];
 667
 668   psa->rgsabound[0].cElements = cElements;
 669   psa->rgsabound[0].lLbound   = lLbound;
 670
 671   return(psa);
 672 }
 673
 674 /************************************************************************
 675  * Changes the caracteristics of the last dimension of the SafeArray
 676  */
 677 HRESULT WINAPI SafeArrayRedim32(
 678   SAFEARRAY      *psa,
 679   SAFEARRAYBOUND *psaboundNew)
 680 {
 681   LONG   lDelta;  /* hold difference in size */
 682   USHORT cDims=1; /* dims counter */
 683
 684   if( !validArg(psa) )
 685     return E_INVALIDARG;
 686
 687   if( psa->cLocks > 0 )
 688     return DISP_E_ARRAYISLOCKED;
 689
 690   if( psa->fFeatures & FADF_FIXEDSIZE )
 691     return E_INVALIDARG;
 692
 693   if( SafeArrayLock32(psa)==E_UNEXPECTED )
 694     return E_UNEXPECTED;/* UNDOC error condition */
 695
 696   /* find the delta in number of array spot to apply to the new array */
 697   lDelta = psaboundNew->cElements - psa->rgsabound[0].cElements;
 698   for(; cDims < psa->cDims; cDims++)
 699     /* delta in number of spot implied by modifying the last dimension */
 700     lDelta *= psa->rgsabound[cDims].cElements;
 701
 702   if (lDelta == 0) { ;/* same size, maybe a change of lLbound, just set it */
 703
 704   } else /* need to enlarge (lDelta +) reduce (lDelta -) */
 705     if(! resizeSafeArray(psa, lDelta))
 706       return E_UNEXPECTED; /* UNDOC error condition */
 707
 708   /* the only modifyable dimension sits in [0] as the dimensions were reversed
 709      at array creation time... */
 710   psa->rgsabound[0].cElements = psaboundNew->cElements;
 711   psa->rgsabound[0].lLbound   = psaboundNew->lLbound;
 712
 713   return SafeArrayUnlock32(psa);
 714 }
 715
 716 /************************************************************************
 717  * NOT WINDOWS API - SafeArray* Utility functions
 718  ************************************************************************/
 719
 720 /************************************************************************
 721  * Used to validate the SAFEARRAY type of arg
 722  */
 723 static BOOL32 validArg(
 724   SAFEARRAY *psa)
 725 {
 726   SAFEARRAYBOUND *sab;
 727   LONG psaSize  = 0;
 728   LONG descSize = 0;
 729   LONG fullSize = 0;
 730
 731   /* Check whether the size of the chunk make sens... That's the only thing
 732      I can think of now... */
 733
 734   psaSize   = HeapSize(GetProcessHeap(), 0, psa);
 735
 736   /* size of the descriptor when the SA is not created with CreateVector */
 737   descSize = sizeof(*psa) + (sizeof(*sab) * (psa->cDims-1));
 738
 739   /* size of the descriptor + data when created with CreateVector */
 740   fullSize = sizeof(*psa) + (psa->cbElements * psa->rgsabound[0].cElements);
 741
 742   return((psaSize == descSize) | (psaSize == fullSize));
 743 }
 744
 745 /************************************************************************
 746  * Used to reallocate memory
 747  */
 748 static BOOL32 resizeSafeArray(
 749   SAFEARRAY *psa,
 750   LONG lDelta)
 751 {
 752   ULONG    ulWholeArraySize;  /* use as multiplicator */
 753   PVOID    pvNewBlock = NULL;
 754   IUnknown *punk;
 755   BSTR32   bstr;
 756
 757   ulWholeArraySize = getArraySize(psa);
 758
 759   if(lDelta < 0) {                    /* array needs to be shorthen  */
 760     if( isPointer(psa->fFeatures))    /* ptr that need to be released */
 761             for(;lDelta < 0; lDelta++) {
 762               punk = *(IUnknown**)
 763           (psa->pvData+((ulWholeArraySize+lDelta)*psa->cbElements));
 764
 765         if( punk != NULL )
 766           IUnknown_Release(punk);
 767             }
 768
 769     else if(psa->fFeatures & FADF_BSTR)  /* BSTR that need to be freed */
 770             for(;lDelta < 0; lDelta++) {
 771         bstr = *(BSTR32*)
 772           (psa->pvData+((ulWholeArraySize+lDelta)*psa->cbElements));
 773
 774         if( bstr != NULL )
 775           SysFreeString32( bstr );
 776       }
 777   }
 778
 779   /* Ok now, if we are enlarging the array, we *MUST* move the whole block
 780      pointed to by pvData.   If we are shorthening the array, this move is
 781      optional but we do it anyway becuase the benefit is that we are
 782      releasing to the system the unused memory */
 783
 784   if((pvNewBlock = HeapReAlloc(GetProcessHeap(), 0, psa->pvData,
 785      (ulWholeArraySize + lDelta) * psa->cbElements)) == NULL)
 786       return FALSE; /* TODO If we get here it means:
 787                        SHRINK situation :  we've deleted the undesired
 788                                            data and did not release the memory
 789                        GROWING situation:  we've been unable to grow the array
 790                     */
 791
 792   /* reassign to the new block of data */
 793   psa->pvData = pvNewBlock;
 794   return TRUE;
 795 }
 796
 797 /************************************************************************
 798  * Used to set the fFeatures data member of the SAFEARRAY structure.
 799  */
 800 static INT32 getFeatures(
 801   VARTYPE vt)
 802 {
 803   switch(vt) {
 804     case VT_UNKNOWN:   return FADF_UNKNOWN;
 805     case VT_DISPATCH:  return FADF_DISPATCH;
 806     case VT_BSTR:      return FADF_BSTR;
 807   }
 808   return 0;
 809 }
 810
 811 /************************************************************************
 812  * Used to figure out if the fFeatures data member of the SAFEARRAY
 813  * structure contain any information about the type of data stored...
 814  */
 815 static BOOL32 isPointer(
 816   USHORT feature)
 817 {
 818   switch(feature) {
 819     case FADF_UNKNOWN:  return TRUE; /* those are pointers */
 820     case FADF_DISPATCH: return TRUE;
 821   }
 822   return FALSE;
 823 }
 824
 825 /************************************************************************
 826  * Used to calculate the displacement when accessing or modifying
 827  * safearray data set.
 828  *
 829  *  Parameters: - LONG *coor is the desired location in the multidimension
 830  *              table.  Ex for a 3 dim table: coor[] = {1,2,3};
 831  *              - ULONG *mat is the format of the table.  Ex for a 3 dim
 832  *              table mat[] = {4,4,4};
 833  *              - USHORT dim is the number of dimension of the SafeArray
 834  */
 835 static ULONG calcDisplacement(
 836   LONG           *coor,
 837   SAFEARRAYBOUND *mat,
 838   LONG           dim)
 839 {
 840   ULONG res = 0;
 841   LONG  iterDim;
 842
 843   for(iterDim=0; iterDim<dim; iterDim++)
 844     /* the -mat[dim] bring coor[dim] relative to 0 for calculation */
 845     res += ((coor[iterDim]-mat[iterDim].lLbound) *
 846             endOfDim(coor, mat, iterDim+1, dim));
 847
 848   TRACE(ole, "SafeArray: calculated displacement is %lu.\n", res);
 849   return(res);
 850 }
 851
 852 /************************************************************************
 853  * Recursivity agent for calcDisplacement method.  Used within Put and
 854  * Get methods.
 855  */
 856 static INT32 endOfDim(
 857   LONG           *coor,
 858   SAFEARRAYBOUND *mat,
 859   LONG           dim,
 860   LONG           realDim)
 861 {
 862   if(dim==realDim)
 863     return 1;
 864   else
 865     return (endOfDim(coor, mat, dim+1, realDim) * mat[dim].cElements);
 866 }
 867
 868
 869 /************************************************************************
 870  * Method used to validate the coordinate received in Put and Get
 871  * methods.
 872  */
 873 static BOOL32 validCoordinate(
 874   LONG      *coor,
 875   SAFEARRAY *psa)
 876 {
 877   INT32   iter=0;
 878   LONG    lUBound;
 879   LONG    lLBound;
 880   HRESULT hRes;
 881
 882   for(; iter<psa->cDims; iter++) {
 883     if((hRes = SafeArrayGetLBound32(psa, iter, &lLBound)) != S_OK)
 884       return FALSE;
 885     if((hRes = SafeArrayGetUBound32(psa, iter, &lUBound)) != S_OK)
 886       return FALSE;
 887
 888     if(lLBound == lUBound)
 889       return FALSE;
 890
 891     if((coor[iter] >= lLBound) && (coor[iter] <= lUBound))
 892       return TRUE;
 893     else
 894       return FALSE;
 895   }
 896   return FALSE;
 897 }
 898
 899 /************************************************************************
 900  * Method used to calculate the number of cells of the SA
 901  */
 902 static ULONG getArraySize(
 903   SAFEARRAY *psa)
 904 {
 905   USHORT cCount;
 906   ULONG  ulWholeArraySize = 1;
 907
 908   for(cCount=0; cCount < psa->cDims; cCount++) /* foreach dimensions... */
 909     ulWholeArraySize *= psa->rgsabound[cCount].cElements;
 910
 911   return ulWholeArraySize;
 912 }
 913
 914
 915 /************************************************************************
 916  * Method used to handle data space dupplication for Copy32 and CopyData32
 917  */
 918 static HRESULT duplicateData(
 919   SAFEARRAY *psa,
 920   SAFEARRAY **ppsaOut)
 921 {
 922   ULONG    ulWholeArraySize; /* size of the thing */
 923   LONG     lDelta;
 924   IUnknown *punk;
 925   BSTR32   pbstrReAllocStr = NULL; /* BSTR reallocated */
 926
 927   ulWholeArraySize = getArraySize(psa); /* Number of item in SA */
 928
 929   SafeArrayLock32(*ppsaOut);
 930
 931   if( isPointer(psa->fFeatures) ) {  /* If datatype is object increment
 932                                         object's reference count */
 933
 934     for(lDelta=0; lDelta < ulWholeArraySize; lDelta++) {
 935       punk = *(IUnknown**)(psa->pvData+(lDelta * psa->cbElements));
 936
 937       if( punk != NULL)
 938         IUnknown_AddRef(punk);
 939     }
 940
 941     /* Copy the source array data into target array */
 942     memcpy((*ppsaOut)->pvData, psa->pvData,
 943       ulWholeArraySize*psa->cbElements);
 944
 945   } else if( psa->fFeatures & FADF_BSTR ) { /* if datatype is BSTR allocate
 946                                                the BSTR in the new array */
 947
 948     for(lDelta=0; lDelta < ulWholeArraySize; lDelta++) {
 949       if(( pbstrReAllocStr = SysAllocString32(
 950             *(BSTR32*)(psa->pvData+(lDelta * psa->cbElements)))) == NULL) {
 951
 952         SafeArrayUnlock32(*ppsaOut);
 953         return E_OUTOFMEMORY;
 954       }
 955
 956       *((BSTR32*)((*ppsaOut)->pvData+(lDelta * psa->cbElements))) =
 957         pbstrReAllocStr;
 958     }
 959
 960   } else { /* Simply copy the source array data into target array */
 961
 962     memcpy((*ppsaOut)->pvData, psa->pvData,
 963       ulWholeArraySize*psa->cbElements);
 964   }
 965
 966   SafeArrayUnlock32(*ppsaOut);
 967
 968   return S_OK;
 969 }
 970