git.oblomov.eu Git - wine/blob - dlls/ole32/stg_prop.c

   1 /*
   2  * Compound Storage (32 bit version)
   3  * Storage implementation
   4  *
   5  * This file contains the compound file implementation
   6  * of the storage interface.
   7  *
   8  * Copyright 1999 Francis Beaudet
   9  * Copyright 1999 Sylvain St-Germain
  10  * Copyright 1999 Thuy Nguyen
  11  * Copyright 2005 Mike McCormack
  12  * Copyright 2005 Juan Lang
  13  *
  14  * This library is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU Lesser General Public
  16  * License as published by the Free Software Foundation; either
  17  * version 2.1 of the License, or (at your option) any later version.
  18  *
  19  * This library is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22  * Lesser General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Lesser General Public
  25  * License along with this library; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  27  *
  28  * TODO:
  29  * - I don't honor the maximum property set size.
  30  * - Certain bogus files could result in reading past the end of a buffer.
  31  * - Mac-generated files won't be read correctly, even if they're little
  32  *   endian, because I disregard whether the generator was a Mac.  This means
  33  *   strings will probably be munged (as I don't understand Mac scripts.)
  34  * - Not all PROPVARIANT types are supported.
  35  * - User defined properties are not supported, see comment in
  36  *   PropertyStorage_ReadFromStream
  37  */
  38
  39 #include <assert.h>
  40 #include <stdarg.h>
  41 #include <stdio.h>
  42 #include <stdlib.h>
  43 #include <string.h>
  44
  45 #define COBJMACROS
  46 #define NONAMELESSUNION
  47 #define NONAMELESSSTRUCT
  48
  49 #include "windef.h"
  50 #include "winbase.h"
  51 #include "winnls.h"
  52 #include "winuser.h"
  53 #include "wine/unicode.h"
  54 #include "wine/debug.h"
  55 #include "dictionary.h"
  56 #include "storage32.h"
  57 #include "enumx.h"
  58
  59 WINE_DEFAULT_DEBUG_CHANNEL(storage);
  60
  61 static inline StorageImpl *impl_from_IPropertySetStorage( IPropertySetStorage *iface )
  62 {
  63     return (StorageImpl *)((char*)iface - FIELD_OFFSET(StorageImpl, base.pssVtbl));
  64 }
  65
  66 /* These are documented in MSDN,
  67  * but they don't seem to be in any header file.
  68  */
  69 #define PROPSETHDR_BYTEORDER_MAGIC      0xfffe
  70 #define PROPSETHDR_OSVER_KIND_WIN16     0
  71 #define PROPSETHDR_OSVER_KIND_MAC       1
  72 #define PROPSETHDR_OSVER_KIND_WIN32     2
  73
  74 #define CP_UNICODE 1200
  75
  76 #define MAX_VERSION_0_PROP_NAME_LENGTH 256
  77
  78 #define CFTAG_WINDOWS   (-1L)
  79 #define CFTAG_MACINTOSH (-2L)
  80 #define CFTAG_FMTID     (-3L)
  81 #define CFTAG_NODATA      0L
  82
  83 typedef struct tagPROPERTYSETHEADER
  84 {
  85     WORD  wByteOrder; /* always 0xfffe */
  86     WORD  wFormat;    /* can be zero or one */
  87     DWORD dwOSVer;    /* OS version of originating system */
  88     CLSID clsid;      /* application CLSID */
  89     DWORD reserved;   /* always 1 */
  90 } PROPERTYSETHEADER;
  91
  92 typedef struct tagFORMATIDOFFSET
  93 {
  94     FMTID fmtid;
  95     DWORD dwOffset; /* from beginning of stream */
  96 } FORMATIDOFFSET;
  97
  98 typedef struct tagPROPERTYSECTIONHEADER
  99 {
 100     DWORD cbSection;
 101     DWORD cProperties;
 102 } PROPERTYSECTIONHEADER;
 103
 104 typedef struct tagPROPERTYIDOFFSET
 105 {
 106     DWORD propid;
 107     DWORD dwOffset; /* from beginning of section */
 108 } PROPERTYIDOFFSET;
 109
 110 typedef struct tagPropertyStorage_impl PropertyStorage_impl;
 111
 112 /* Initializes the property storage from the stream (and undoes any uncommitted
 113  * changes in the process.)  Returns an error if there is an error reading or
 114  * if the stream format doesn't match what's expected.
 115  */
 116 static HRESULT PropertyStorage_ReadFromStream(PropertyStorage_impl *);
 117
 118 static HRESULT PropertyStorage_WriteToStream(PropertyStorage_impl *);
 119
 120 /* Creates the dictionaries used by the property storage.  If successful, all
 121  * the dictionaries have been created.  If failed, none has been.  (This makes
 122  * it a bit easier to deal with destroying them.)
 123  */
 124 static HRESULT PropertyStorage_CreateDictionaries(PropertyStorage_impl *);
 125
 126 static void PropertyStorage_DestroyDictionaries(PropertyStorage_impl *);
 127
 128 /* Copies from propvar to prop.  If propvar's type is VT_LPSTR, copies the
 129  * string using PropertyStorage_StringCopy.
 130  */
 131 static HRESULT PropertyStorage_PropVariantCopy(PROPVARIANT *prop,
 132  const PROPVARIANT *propvar, LCID targetCP, LCID srcCP);
 133
 134 /* Copies the string src, which is encoded using code page srcCP, and returns
 135  * it in *dst, in the code page specified by targetCP.  The returned string is
 136  * allocated using CoTaskMemAlloc.
 137  * If srcCP is CP_UNICODE, src is in fact an LPCWSTR.  Similarly, if targetCP
 138  * is CP_UNICODE, the returned string is in fact an LPWSTR.
 139  * Returns S_OK on success, something else on failure.
 140  */
 141 static HRESULT PropertyStorage_StringCopy(LPCSTR src, LCID srcCP, LPSTR *dst,
 142  LCID targetCP);
 143
 144 static const IPropertyStorageVtbl IPropertyStorage_Vtbl;
 145 static const IEnumSTATPROPSETSTGVtbl IEnumSTATPROPSETSTG_Vtbl;
 146 static const IEnumSTATPROPSTGVtbl IEnumSTATPROPSTG_Vtbl;
 147 static HRESULT create_EnumSTATPROPSETSTG(StorageImpl *, IEnumSTATPROPSETSTG**);
 148 static HRESULT create_EnumSTATPROPSTG(PropertyStorage_impl *, IEnumSTATPROPSTG**);
 149
 150 /***********************************************************************
 151  * Implementation of IPropertyStorage
 152  */
 153 struct tagPropertyStorage_impl
 154 {
 155     const IPropertyStorageVtbl *vtbl;
 156     LONG ref;
 157     CRITICAL_SECTION cs;
 158     IStream *stm;
 159     BOOL  dirty;
 160     FMTID fmtid;
 161     CLSID clsid;
 162     WORD  format;
 163     DWORD originatorOS;
 164     DWORD grfFlags;
 165     DWORD grfMode;
 166     UINT  codePage;
 167     LCID  locale;
 168     PROPID highestProp;
 169     struct dictionary *name_to_propid;
 170     struct dictionary *propid_to_name;
 171     struct dictionary *propid_to_prop;
 172 };
 173
 174 /************************************************************************
 175  * IPropertyStorage_fnQueryInterface (IPropertyStorage)
 176  */
 177 static HRESULT WINAPI IPropertyStorage_fnQueryInterface(
 178     IPropertyStorage *iface,
 179     REFIID riid,
 180     void** ppvObject)
 181 {
 182     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 183
 184     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppvObject);
 185
 186     if (!ppvObject)
 187         return E_INVALIDARG;
 188
 189     *ppvObject = 0;
 190
 191     if (IsEqualGUID(&IID_IUnknown, riid) ||
 192         IsEqualGUID(&IID_IPropertyStorage, riid))
 193     {
 194         IPropertyStorage_AddRef(iface);
 195         *ppvObject = iface;
 196         return S_OK;
 197     }
 198
 199     return E_NOINTERFACE;
 200 }
 201
 202 /************************************************************************
 203  * IPropertyStorage_fnAddRef (IPropertyStorage)
 204  */
 205 static ULONG WINAPI IPropertyStorage_fnAddRef(
 206     IPropertyStorage *iface)
 207 {
 208     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 209     return InterlockedIncrement(&This->ref);
 210 }
 211
 212 /************************************************************************
 213  * IPropertyStorage_fnRelease (IPropertyStorage)
 214  */
 215 static ULONG WINAPI IPropertyStorage_fnRelease(
 216     IPropertyStorage *iface)
 217 {
 218     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 219     ULONG ref;
 220
 221     ref = InterlockedDecrement(&This->ref);
 222     if (ref == 0)
 223     {
 224         TRACE("Destroying %p\n", This);
 225         if (This->dirty)
 226             IPropertyStorage_Commit(iface, STGC_DEFAULT);
 227         IStream_Release(This->stm);
 228         This->cs.DebugInfo->Spare[0] = 0;
 229         DeleteCriticalSection(&This->cs);
 230         PropertyStorage_DestroyDictionaries(This);
 231         HeapFree(GetProcessHeap(), 0, This);
 232     }
 233     return ref;
 234 }
 235
 236 static PROPVARIANT *PropertyStorage_FindProperty(PropertyStorage_impl *This,
 237  DWORD propid)
 238 {
 239     PROPVARIANT *ret = NULL;
 240
 241     dictionary_find(This->propid_to_prop, UlongToPtr(propid), (void **)&ret);
 242     TRACE("returning %p\n", ret);
 243     return ret;
 244 }
 245
 246 /* Returns NULL if name is NULL. */
 247 static PROPVARIANT *PropertyStorage_FindPropertyByName(
 248  PropertyStorage_impl *This, LPCWSTR name)
 249 {
 250     PROPVARIANT *ret = NULL;
 251     void *propid;
 252
 253     if (!name)
 254         return NULL;
 255     if (This->codePage == CP_UNICODE)
 256     {
 257         if (dictionary_find(This->name_to_propid, name, &propid))
 258             ret = PropertyStorage_FindProperty(This, PtrToUlong(propid));
 259     }
 260     else
 261     {
 262         LPSTR ansiName;
 263         HRESULT hr = PropertyStorage_StringCopy((LPCSTR)name, CP_UNICODE,
 264          &ansiName, This->codePage);
 265
 266         if (SUCCEEDED(hr))
 267         {
 268             if (dictionary_find(This->name_to_propid, ansiName, &propid))
 269                 ret = PropertyStorage_FindProperty(This, PtrToUlong(propid));
 270             CoTaskMemFree(ansiName);
 271         }
 272     }
 273     TRACE("returning %p\n", ret);
 274     return ret;
 275 }
 276
 277 static LPWSTR PropertyStorage_FindPropertyNameById(PropertyStorage_impl *This,
 278  DWORD propid)
 279 {
 280     LPWSTR ret = NULL;
 281
 282     dictionary_find(This->propid_to_name, UlongToPtr(propid), (void **)&ret);
 283     TRACE("returning %p\n", ret);
 284     return ret;
 285 }
 286
 287 /************************************************************************
 288  * IPropertyStorage_fnReadMultiple (IPropertyStorage)
 289  */
 290 static HRESULT WINAPI IPropertyStorage_fnReadMultiple(
 291     IPropertyStorage* iface,
 292     ULONG cpspec,
 293     const PROPSPEC rgpspec[],
 294     PROPVARIANT rgpropvar[])
 295 {
 296     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 297     HRESULT hr = S_OK;
 298     ULONG i;
 299
 300     TRACE("(%p, %d, %p, %p)\n", iface, cpspec, rgpspec, rgpropvar);
 301
 302     if (!cpspec)
 303         return S_FALSE;
 304     if (!rgpspec || !rgpropvar)
 305         return E_INVALIDARG;
 306     EnterCriticalSection(&This->cs);
 307     for (i = 0; i < cpspec; i++)
 308     {
 309         PropVariantInit(&rgpropvar[i]);
 310         if (rgpspec[i].ulKind == PRSPEC_LPWSTR)
 311         {
 312             PROPVARIANT *prop = PropertyStorage_FindPropertyByName(This,
 313              rgpspec[i].u.lpwstr);
 314
 315             if (prop)
 316                 PropertyStorage_PropVariantCopy(&rgpropvar[i], prop, GetACP(),
 317                  This->codePage);
 318         }
 319         else
 320         {
 321             switch (rgpspec[i].u.propid)
 322             {
 323                 case PID_CODEPAGE:
 324                     rgpropvar[i].vt = VT_I2;
 325                     rgpropvar[i].u.iVal = This->codePage;
 326                     break;
 327                 case PID_LOCALE:
 328                     rgpropvar[i].vt = VT_I4;
 329                     rgpropvar[i].u.lVal = This->locale;
 330                     break;
 331                 default:
 332                 {
 333                     PROPVARIANT *prop = PropertyStorage_FindProperty(This,
 334                      rgpspec[i].u.propid);
 335
 336                     if (prop)
 337                         PropertyStorage_PropVariantCopy(&rgpropvar[i], prop,
 338                          GetACP(), This->codePage);
 339                     else
 340                         hr = S_FALSE;
 341                 }
 342             }
 343         }
 344     }
 345     LeaveCriticalSection(&This->cs);
 346     return hr;
 347 }
 348
 349 static HRESULT PropertyStorage_StringCopy(LPCSTR src, LCID srcCP, LPSTR *dst,
 350  LCID dstCP)
 351 {
 352     HRESULT hr = S_OK;
 353     int len;
 354
 355     TRACE("%s, %p, %d, %d\n",
 356      srcCP == CP_UNICODE ? debugstr_w((LPCWSTR)src) : debugstr_a(src), dst,
 357      dstCP, srcCP);
 358     assert(src);
 359     assert(dst);
 360     *dst = NULL;
 361     if (dstCP == srcCP)
 362     {
 363         size_t len;
 364
 365         if (dstCP == CP_UNICODE)
 366             len = (strlenW((LPCWSTR)src) + 1) * sizeof(WCHAR);
 367         else
 368             len = strlen(src) + 1;
 369         *dst = CoTaskMemAlloc(len * sizeof(WCHAR));
 370         if (!*dst)
 371             hr = STG_E_INSUFFICIENTMEMORY;
 372         else
 373             memcpy(*dst, src, len);
 374     }
 375     else
 376     {
 377         if (dstCP == CP_UNICODE)
 378         {
 379             len = MultiByteToWideChar(srcCP, 0, src, -1, NULL, 0);
 380             *dst = CoTaskMemAlloc(len * sizeof(WCHAR));
 381             if (!*dst)
 382                 hr = STG_E_INSUFFICIENTMEMORY;
 383             else
 384                 MultiByteToWideChar(srcCP, 0, src, -1, (LPWSTR)*dst, len);
 385         }
 386         else
 387         {
 388             LPCWSTR wideStr = NULL;
 389             LPWSTR wideStr_tmp = NULL;
 390
 391             if (srcCP == CP_UNICODE)
 392                 wideStr = (LPCWSTR)src;
 393             else
 394             {
 395                 len = MultiByteToWideChar(srcCP, 0, src, -1, NULL, 0);
 396                 wideStr_tmp = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 397                 if (wideStr_tmp)
 398                 {
 399                     MultiByteToWideChar(srcCP, 0, src, -1, wideStr_tmp, len);
 400                     wideStr = wideStr_tmp;
 401                 }
 402                 else
 403                     hr = STG_E_INSUFFICIENTMEMORY;
 404             }
 405             if (SUCCEEDED(hr))
 406             {
 407                 len = WideCharToMultiByte(dstCP, 0, wideStr, -1, NULL, 0,
 408                  NULL, NULL);
 409                 *dst = CoTaskMemAlloc(len);
 410                 if (!*dst)
 411                     hr = STG_E_INSUFFICIENTMEMORY;
 412                 else
 413                 {
 414                     BOOL defCharUsed = FALSE;
 415
 416                     if (WideCharToMultiByte(dstCP, 0, wideStr, -1, *dst, len,
 417                      NULL, &defCharUsed) == 0 || defCharUsed)
 418                     {
 419                         CoTaskMemFree(*dst);
 420                         *dst = NULL;
 421                         hr = HRESULT_FROM_WIN32(ERROR_NO_UNICODE_TRANSLATION);
 422                     }
 423                 }
 424             }
 425             HeapFree(GetProcessHeap(), 0, wideStr_tmp);
 426         }
 427     }
 428     TRACE("returning 0x%08x (%s)\n", hr,
 429      dstCP == CP_UNICODE ? debugstr_w((LPCWSTR)*dst) : debugstr_a(*dst));
 430     return hr;
 431 }
 432
 433 static HRESULT PropertyStorage_PropVariantCopy(PROPVARIANT *prop,
 434  const PROPVARIANT *propvar, LCID targetCP, LCID srcCP)
 435 {
 436     HRESULT hr = S_OK;
 437
 438     assert(prop);
 439     assert(propvar);
 440     if (propvar->vt == VT_LPSTR)
 441     {
 442         hr = PropertyStorage_StringCopy(propvar->u.pszVal, srcCP,
 443          &prop->u.pszVal, targetCP);
 444         if (SUCCEEDED(hr))
 445             prop->vt = VT_LPSTR;
 446     }
 447     else
 448         PropVariantCopy(prop, propvar);
 449     return hr;
 450 }
 451
 452 /* Stores the property with id propid and value propvar into this property
 453  * storage.  lcid is ignored if propvar's type is not VT_LPSTR.  If propvar's
 454  * type is VT_LPSTR, converts the string using lcid as the source code page
 455  * and This->codePage as the target code page before storing.
 456  * As a side effect, may change This->format to 1 if the type of propvar is
 457  * a version 1-only property.
 458  */
 459 static HRESULT PropertyStorage_StorePropWithId(PropertyStorage_impl *This,
 460  PROPID propid, const PROPVARIANT *propvar, LCID lcid)
 461 {
 462     HRESULT hr = S_OK;
 463     PROPVARIANT *prop = PropertyStorage_FindProperty(This, propid);
 464
 465     assert(propvar);
 466     if (propvar->vt & VT_BYREF || propvar->vt & VT_ARRAY)
 467         This->format = 1;
 468     switch (propvar->vt)
 469     {
 470     case VT_DECIMAL:
 471     case VT_I1:
 472     case VT_INT:
 473     case VT_UINT:
 474     case VT_VECTOR|VT_I1:
 475         This->format = 1;
 476     }
 477     TRACE("Setting 0x%08x to type %d\n", propid, propvar->vt);
 478     if (prop)
 479     {
 480         PropVariantClear(prop);
 481         hr = PropertyStorage_PropVariantCopy(prop, propvar, This->codePage,
 482          lcid);
 483     }
 484     else
 485     {
 486         prop = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
 487          sizeof(PROPVARIANT));
 488         if (prop)
 489         {
 490             hr = PropertyStorage_PropVariantCopy(prop, propvar, This->codePage,
 491              lcid);
 492             if (SUCCEEDED(hr))
 493             {
 494                 dictionary_insert(This->propid_to_prop, UlongToPtr(propid), prop);
 495                 if (propid > This->highestProp)
 496                     This->highestProp = propid;
 497             }
 498             else
 499                 HeapFree(GetProcessHeap(), 0, prop);
 500         }
 501         else
 502             hr = STG_E_INSUFFICIENTMEMORY;
 503     }
 504     return hr;
 505 }
 506
 507 /* Adds the name srcName to the name dictionaries, mapped to property ID id.
 508  * srcName is encoded in code page cp, and is converted to This->codePage.
 509  * If cp is CP_UNICODE, srcName is actually a unicode string.
 510  * As a side effect, may change This->format to 1 if srcName is too long for
 511  * a version 0 property storage.
 512  * Doesn't validate id.
 513  */
 514 static HRESULT PropertyStorage_StoreNameWithId(PropertyStorage_impl *This,
 515  LPCSTR srcName, LCID cp, PROPID id)
 516 {
 517     LPSTR name;
 518     HRESULT hr;
 519
 520     assert(srcName);
 521
 522     hr = PropertyStorage_StringCopy(srcName, cp, &name, This->codePage);
 523     if (SUCCEEDED(hr))
 524     {
 525         if (This->codePage == CP_UNICODE)
 526         {
 527             if (lstrlenW((LPWSTR)name) >= MAX_VERSION_0_PROP_NAME_LENGTH)
 528                 This->format = 1;
 529         }
 530         else
 531         {
 532             if (strlen(name) >= MAX_VERSION_0_PROP_NAME_LENGTH)
 533                 This->format = 1;
 534         }
 535         TRACE("Adding prop name %s, propid %d\n",
 536          This->codePage == CP_UNICODE ? debugstr_w((LPCWSTR)name) :
 537          debugstr_a(name), id);
 538         dictionary_insert(This->name_to_propid, name, UlongToPtr(id));
 539         dictionary_insert(This->propid_to_name, UlongToPtr(id), name);
 540     }
 541     return hr;
 542 }
 543
 544 /************************************************************************
 545  * IPropertyStorage_fnWriteMultiple (IPropertyStorage)
 546  */
 547 static HRESULT WINAPI IPropertyStorage_fnWriteMultiple(
 548     IPropertyStorage* iface,
 549     ULONG cpspec,
 550     const PROPSPEC rgpspec[],
 551     const PROPVARIANT rgpropvar[],
 552     PROPID propidNameFirst)
 553 {
 554     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 555     HRESULT hr = S_OK;
 556     ULONG i;
 557
 558     TRACE("(%p, %d, %p, %p)\n", iface, cpspec, rgpspec, rgpropvar);
 559
 560     if (cpspec && (!rgpspec || !rgpropvar))
 561         return E_INVALIDARG;
 562     if (!(This->grfMode & STGM_READWRITE))
 563         return STG_E_ACCESSDENIED;
 564     EnterCriticalSection(&This->cs);
 565     This->dirty = TRUE;
 566     This->originatorOS = (DWORD)MAKELONG(LOWORD(GetVersion()),
 567      PROPSETHDR_OSVER_KIND_WIN32) ;
 568     for (i = 0; i < cpspec; i++)
 569     {
 570         if (rgpspec[i].ulKind == PRSPEC_LPWSTR)
 571         {
 572             PROPVARIANT *prop = PropertyStorage_FindPropertyByName(This,
 573              rgpspec[i].u.lpwstr);
 574
 575             if (prop)
 576                 PropVariantCopy(prop, &rgpropvar[i]);
 577             else
 578             {
 579                 /* Note that I don't do the special cases here that I do below,
 580                  * because naming the special PIDs isn't supported.
 581                  */
 582                 if (propidNameFirst < PID_FIRST_USABLE ||
 583                  propidNameFirst >= PID_MIN_READONLY)
 584                     hr = STG_E_INVALIDPARAMETER;
 585                 else
 586                 {
 587                     PROPID nextId = max(propidNameFirst, This->highestProp + 1);
 588
 589                     hr = PropertyStorage_StoreNameWithId(This,
 590                      (LPCSTR)rgpspec[i].u.lpwstr, CP_UNICODE, nextId);
 591                     if (SUCCEEDED(hr))
 592                         hr = PropertyStorage_StorePropWithId(This, nextId,
 593                          &rgpropvar[i], GetACP());
 594                 }
 595             }
 596         }
 597         else
 598         {
 599             switch (rgpspec[i].u.propid)
 600             {
 601             case PID_DICTIONARY:
 602                 /* Can't set the dictionary */
 603                 hr = STG_E_INVALIDPARAMETER;
 604                 break;
 605             case PID_CODEPAGE:
 606                 /* Can only set the code page if nothing else has been set */
 607                 if (dictionary_num_entries(This->propid_to_prop) == 0 &&
 608                  rgpropvar[i].vt == VT_I2)
 609                 {
 610                     This->codePage = rgpropvar[i].u.iVal;
 611                     if (This->codePage == CP_UNICODE)
 612                         This->grfFlags &= ~PROPSETFLAG_ANSI;
 613                     else
 614                         This->grfFlags |= PROPSETFLAG_ANSI;
 615                 }
 616                 else
 617                     hr = STG_E_INVALIDPARAMETER;
 618                 break;
 619             case PID_LOCALE:
 620                 /* Can only set the locale if nothing else has been set */
 621                 if (dictionary_num_entries(This->propid_to_prop) == 0 &&
 622                  rgpropvar[i].vt == VT_I4)
 623                     This->locale = rgpropvar[i].u.lVal;
 624                 else
 625                     hr = STG_E_INVALIDPARAMETER;
 626                 break;
 627             case PID_ILLEGAL:
 628                 /* silently ignore like MSDN says */
 629                 break;
 630             default:
 631                 if (rgpspec[i].u.propid >= PID_MIN_READONLY)
 632                     hr = STG_E_INVALIDPARAMETER;
 633                 else
 634                     hr = PropertyStorage_StorePropWithId(This,
 635                      rgpspec[i].u.propid, &rgpropvar[i], GetACP());
 636             }
 637         }
 638     }
 639     if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
 640         IPropertyStorage_Commit(iface, STGC_DEFAULT);
 641     LeaveCriticalSection(&This->cs);
 642     return hr;
 643 }
 644
 645 /************************************************************************
 646  * IPropertyStorage_fnDeleteMultiple (IPropertyStorage)
 647  */
 648 static HRESULT WINAPI IPropertyStorage_fnDeleteMultiple(
 649     IPropertyStorage* iface,
 650     ULONG cpspec,
 651     const PROPSPEC rgpspec[])
 652 {
 653     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 654     ULONG i;
 655     HRESULT hr;
 656
 657     TRACE("(%p, %d, %p)\n", iface, cpspec, rgpspec);
 658
 659     if (cpspec && !rgpspec)
 660         return E_INVALIDARG;
 661     if (!(This->grfMode & STGM_READWRITE))
 662         return STG_E_ACCESSDENIED;
 663     hr = S_OK;
 664     EnterCriticalSection(&This->cs);
 665     This->dirty = TRUE;
 666     for (i = 0; i < cpspec; i++)
 667     {
 668         if (rgpspec[i].ulKind == PRSPEC_LPWSTR)
 669         {
 670             void *propid;
 671
 672             if (dictionary_find(This->name_to_propid, rgpspec[i].u.lpwstr, &propid))
 673                 dictionary_remove(This->propid_to_prop, propid);
 674         }
 675         else
 676         {
 677             if (rgpspec[i].u.propid >= PID_FIRST_USABLE &&
 678              rgpspec[i].u.propid < PID_MIN_READONLY)
 679                 dictionary_remove(This->propid_to_prop, UlongToPtr(rgpspec[i].u.propid));
 680             else
 681                 hr = STG_E_INVALIDPARAMETER;
 682         }
 683     }
 684     if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
 685         IPropertyStorage_Commit(iface, STGC_DEFAULT);
 686     LeaveCriticalSection(&This->cs);
 687     return hr;
 688 }
 689
 690 /************************************************************************
 691  * IPropertyStorage_fnReadPropertyNames (IPropertyStorage)
 692  */
 693 static HRESULT WINAPI IPropertyStorage_fnReadPropertyNames(
 694     IPropertyStorage* iface,
 695     ULONG cpropid,
 696     const PROPID rgpropid[],
 697     LPOLESTR rglpwstrName[])
 698 {
 699     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 700     ULONG i;
 701     HRESULT hr = S_FALSE;
 702
 703     TRACE("(%p, %d, %p, %p)\n", iface, cpropid, rgpropid, rglpwstrName);
 704
 705     if (cpropid && (!rgpropid || !rglpwstrName))
 706         return E_INVALIDARG;
 707     EnterCriticalSection(&This->cs);
 708     for (i = 0; i < cpropid && SUCCEEDED(hr); i++)
 709     {
 710         LPWSTR name = PropertyStorage_FindPropertyNameById(This, rgpropid[i]);
 711
 712         if (name)
 713         {
 714             size_t len = lstrlenW(name);
 715
 716             hr = S_OK;
 717             rglpwstrName[i] = CoTaskMemAlloc((len + 1) * sizeof(WCHAR));
 718             if (rglpwstrName)
 719                 memcpy(rglpwstrName, name, (len + 1) * sizeof(WCHAR));
 720             else
 721                 hr = STG_E_INSUFFICIENTMEMORY;
 722         }
 723         else
 724             rglpwstrName[i] = NULL;
 725     }
 726     LeaveCriticalSection(&This->cs);
 727     return hr;
 728 }
 729
 730 /************************************************************************
 731  * IPropertyStorage_fnWritePropertyNames (IPropertyStorage)
 732  */
 733 static HRESULT WINAPI IPropertyStorage_fnWritePropertyNames(
 734     IPropertyStorage* iface,
 735     ULONG cpropid,
 736     const PROPID rgpropid[],
 737     const LPOLESTR rglpwstrName[])
 738 {
 739     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 740     ULONG i;
 741     HRESULT hr;
 742
 743     TRACE("(%p, %d, %p, %p)\n", iface, cpropid, rgpropid, rglpwstrName);
 744
 745     if (cpropid && (!rgpropid || !rglpwstrName))
 746         return E_INVALIDARG;
 747     if (!(This->grfMode & STGM_READWRITE))
 748         return STG_E_ACCESSDENIED;
 749     hr = S_OK;
 750     EnterCriticalSection(&This->cs);
 751     This->dirty = TRUE;
 752     for (i = 0; SUCCEEDED(hr) && i < cpropid; i++)
 753     {
 754         if (rgpropid[i] != PID_ILLEGAL)
 755             hr = PropertyStorage_StoreNameWithId(This, (LPCSTR)rglpwstrName[i],
 756              CP_UNICODE, rgpropid[i]);
 757     }
 758     if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
 759         IPropertyStorage_Commit(iface, STGC_DEFAULT);
 760     LeaveCriticalSection(&This->cs);
 761     return hr;
 762 }
 763
 764 /************************************************************************
 765  * IPropertyStorage_fnDeletePropertyNames (IPropertyStorage)
 766  */
 767 static HRESULT WINAPI IPropertyStorage_fnDeletePropertyNames(
 768     IPropertyStorage* iface,
 769     ULONG cpropid,
 770     const PROPID rgpropid[])
 771 {
 772     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 773     ULONG i;
 774     HRESULT hr;
 775
 776     TRACE("(%p, %d, %p)\n", iface, cpropid, rgpropid);
 777
 778     if (cpropid && !rgpropid)
 779         return E_INVALIDARG;
 780     if (!(This->grfMode & STGM_READWRITE))
 781         return STG_E_ACCESSDENIED;
 782     hr = S_OK;
 783     EnterCriticalSection(&This->cs);
 784     This->dirty = TRUE;
 785     for (i = 0; i < cpropid; i++)
 786     {
 787         LPWSTR name = NULL;
 788
 789         if (dictionary_find(This->propid_to_name, UlongToPtr(rgpropid[i]), (void **)&name))
 790         {
 791             dictionary_remove(This->propid_to_name, UlongToPtr(rgpropid[i]));
 792             dictionary_remove(This->name_to_propid, name);
 793         }
 794     }
 795     if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
 796         IPropertyStorage_Commit(iface, STGC_DEFAULT);
 797     LeaveCriticalSection(&This->cs);
 798     return hr;
 799 }
 800
 801 /************************************************************************
 802  * IPropertyStorage_fnCommit (IPropertyStorage)
 803  */
 804 static HRESULT WINAPI IPropertyStorage_fnCommit(
 805     IPropertyStorage* iface,
 806     DWORD grfCommitFlags)
 807 {
 808     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 809     HRESULT hr;
 810
 811     TRACE("(%p, 0x%08x)\n", iface, grfCommitFlags);
 812
 813     if (!(This->grfMode & STGM_READWRITE))
 814         return STG_E_ACCESSDENIED;
 815     EnterCriticalSection(&This->cs);
 816     if (This->dirty)
 817         hr = PropertyStorage_WriteToStream(This);
 818     else
 819         hr = S_OK;
 820     LeaveCriticalSection(&This->cs);
 821     return hr;
 822 }
 823
 824 /************************************************************************
 825  * IPropertyStorage_fnRevert (IPropertyStorage)
 826  */
 827 static HRESULT WINAPI IPropertyStorage_fnRevert(
 828     IPropertyStorage* iface)
 829 {
 830     HRESULT hr;
 831     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 832
 833     TRACE("%p\n", iface);
 834
 835     EnterCriticalSection(&This->cs);
 836     if (This->dirty)
 837     {
 838         PropertyStorage_DestroyDictionaries(This);
 839         hr = PropertyStorage_CreateDictionaries(This);
 840         if (SUCCEEDED(hr))
 841             hr = PropertyStorage_ReadFromStream(This);
 842     }
 843     else
 844         hr = S_OK;
 845     LeaveCriticalSection(&This->cs);
 846     return hr;
 847 }
 848
 849 /************************************************************************
 850  * IPropertyStorage_fnEnum (IPropertyStorage)
 851  */
 852 static HRESULT WINAPI IPropertyStorage_fnEnum(
 853     IPropertyStorage* iface,
 854     IEnumSTATPROPSTG** ppenum)
 855 {
 856     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 857     return create_EnumSTATPROPSTG(This, ppenum);
 858 }
 859
 860 /************************************************************************
 861  * IPropertyStorage_fnSetTimes (IPropertyStorage)
 862  */
 863 static HRESULT WINAPI IPropertyStorage_fnSetTimes(
 864     IPropertyStorage* iface,
 865     const FILETIME* pctime,
 866     const FILETIME* patime,
 867     const FILETIME* pmtime)
 868 {
 869     FIXME("\n");
 870     return E_NOTIMPL;
 871 }
 872
 873 /************************************************************************
 874  * IPropertyStorage_fnSetClass (IPropertyStorage)
 875  */
 876 static HRESULT WINAPI IPropertyStorage_fnSetClass(
 877     IPropertyStorage* iface,
 878     REFCLSID clsid)
 879 {
 880     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 881
 882     TRACE("%p, %s\n", iface, debugstr_guid(clsid));
 883
 884     if (!clsid)
 885         return E_INVALIDARG;
 886     if (!(This->grfMode & STGM_READWRITE))
 887         return STG_E_ACCESSDENIED;
 888     This->clsid = *clsid;
 889     This->dirty = TRUE;
 890     if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
 891         IPropertyStorage_Commit(iface, STGC_DEFAULT);
 892     return S_OK;
 893 }
 894
 895 /************************************************************************
 896  * IPropertyStorage_fnStat (IPropertyStorage)
 897  */
 898 static HRESULT WINAPI IPropertyStorage_fnStat(
 899     IPropertyStorage* iface,
 900     STATPROPSETSTG* statpsstg)
 901 {
 902     PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
 903     STATSTG stat;
 904     HRESULT hr;
 905
 906     TRACE("%p, %p\n", iface, statpsstg);
 907
 908     if (!statpsstg)
 909         return E_INVALIDARG;
 910
 911     hr = IStream_Stat(This->stm, &stat, STATFLAG_NONAME);
 912     if (SUCCEEDED(hr))
 913     {
 914         statpsstg->fmtid = This->fmtid;
 915         statpsstg->clsid = This->clsid;
 916         statpsstg->grfFlags = This->grfFlags;
 917         statpsstg->mtime = stat.mtime;
 918         statpsstg->ctime = stat.ctime;
 919         statpsstg->atime = stat.atime;
 920         statpsstg->dwOSVersion = This->originatorOS;
 921     }
 922     return hr;
 923 }
 924
 925 static int PropertyStorage_PropNameCompare(const void *a, const void *b,
 926  void *extra)
 927 {
 928     PropertyStorage_impl *This = extra;
 929
 930     if (This->codePage == CP_UNICODE)
 931     {
 932         TRACE("(%s, %s)\n", debugstr_w(a), debugstr_w(b));
 933         if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
 934             return lstrcmpW(a, b);
 935         else
 936             return lstrcmpiW(a, b);
 937     }
 938     else
 939     {
 940         TRACE("(%s, %s)\n", debugstr_a(a), debugstr_a(b));
 941         if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
 942             return lstrcmpA(a, b);
 943         else
 944             return lstrcmpiA(a, b);
 945     }
 946 }
 947
 948 static void PropertyStorage_PropNameDestroy(void *k, void *d, void *extra)
 949 {
 950     CoTaskMemFree(k);
 951 }
 952
 953 static int PropertyStorage_PropCompare(const void *a, const void *b,
 954  void *extra)
 955 {
 956     TRACE("(%d, %d)\n", PtrToUlong(a), PtrToUlong(b));
 957     return PtrToUlong(a) - PtrToUlong(b);
 958 }
 959
 960 static void PropertyStorage_PropertyDestroy(void *k, void *d, void *extra)
 961 {
 962     PropVariantClear(d);
 963     HeapFree(GetProcessHeap(), 0, d);
 964 }
 965
 966 #ifdef WORDS_BIGENDIAN
 967 /* Swaps each character in str to or from little endian; assumes the conversion
 968  * is symmetric, that is, that lendian16toh is equivalent to htole16.
 969  */
 970 static void PropertyStorage_ByteSwapString(LPWSTR str, size_t len)
 971 {
 972     DWORD i;
 973
 974     /* Swap characters to host order.
 975      * FIXME: alignment?
 976      */
 977     for (i = 0; i < len; i++)
 978         str[i] = lendian16toh(str[i]);
 979 }
 980 #else
 981 #define PropertyStorage_ByteSwapString(s, l)
 982 #endif
 983
 984 /* Reads the dictionary from the memory buffer beginning at ptr.  Interprets
 985  * the entries according to the values of This->codePage and This->locale.
 986  * FIXME: there isn't any checking whether the read property extends past the
 987  * end of the buffer.
 988  */
 989 static HRESULT PropertyStorage_ReadDictionary(PropertyStorage_impl *This,
 990  BYTE *ptr)
 991 {
 992     DWORD numEntries, i;
 993     HRESULT hr = S_OK;
 994
 995     assert(This->name_to_propid);
 996     assert(This->propid_to_name);
 997
 998     StorageUtl_ReadDWord(ptr, 0, &numEntries);
 999     TRACE("Reading %d entries:\n", numEntries);
1000     ptr += sizeof(DWORD);
1001     for (i = 0; SUCCEEDED(hr) && i < numEntries; i++)
1002     {
1003         PROPID propid;
1004         DWORD cbEntry;
1005
1006         StorageUtl_ReadDWord(ptr, 0, &propid);
1007         ptr += sizeof(PROPID);
1008         StorageUtl_ReadDWord(ptr, 0, &cbEntry);
1009         ptr += sizeof(DWORD);
1010         TRACE("Reading entry with ID 0x%08x, %d bytes\n", propid, cbEntry);
1011         /* Make sure the source string is NULL-terminated */
1012         if (This->codePage != CP_UNICODE)
1013             ptr[cbEntry - 1] = '\0';
1014         else
1015             *((LPWSTR)ptr + cbEntry / sizeof(WCHAR)) = '\0';
1016         hr = PropertyStorage_StoreNameWithId(This, (char*)ptr, This->codePage, propid);
1017         if (This->codePage == CP_UNICODE)
1018         {
1019             /* Unicode entries are padded to DWORD boundaries */
1020             if (cbEntry % sizeof(DWORD))
1021                 ptr += sizeof(DWORD) - (cbEntry % sizeof(DWORD));
1022         }
1023         ptr += sizeof(DWORD) + cbEntry;
1024     }
1025     return hr;
1026 }
1027
1028 /* FIXME: there isn't any checking whether the read property extends past the
1029  * end of the buffer.
1030  */
1031 static HRESULT PropertyStorage_ReadProperty(PropertyStorage_impl *This,
1032  PROPVARIANT *prop, const BYTE *data)
1033 {
1034     HRESULT hr = S_OK;
1035
1036     assert(prop);
1037     assert(data);
1038     StorageUtl_ReadDWord(data, 0, (DWORD *)&prop->vt);
1039     data += sizeof(DWORD);
1040     switch (prop->vt)
1041     {
1042     case VT_EMPTY:
1043     case VT_NULL:
1044         break;
1045     case VT_I1:
1046         prop->u.cVal = *(const char *)data;
1047         TRACE("Read char 0x%x ('%c')\n", prop->u.cVal, prop->u.cVal);
1048         break;
1049     case VT_UI1:
1050         prop->u.bVal = *data;
1051         TRACE("Read byte 0x%x\n", prop->u.bVal);
1052         break;
1053     case VT_I2:
1054         StorageUtl_ReadWord(data, 0, (WORD*)&prop->u.iVal);
1055         TRACE("Read short %d\n", prop->u.iVal);
1056         break;
1057     case VT_UI2:
1058         StorageUtl_ReadWord(data, 0, &prop->u.uiVal);
1059         TRACE("Read ushort %d\n", prop->u.uiVal);
1060         break;
1061     case VT_INT:
1062     case VT_I4:
1063         StorageUtl_ReadDWord(data, 0, (DWORD*)&prop->u.lVal);
1064         TRACE("Read long %d\n", prop->u.lVal);
1065         break;
1066     case VT_UINT:
1067     case VT_UI4:
1068         StorageUtl_ReadDWord(data, 0, &prop->u.ulVal);
1069         TRACE("Read ulong %d\n", prop->u.ulVal);
1070         break;
1071     case VT_LPSTR:
1072     {
1073         DWORD count;
1074
1075         StorageUtl_ReadDWord(data, 0, &count);
1076         if (This->codePage == CP_UNICODE && count / 2)
1077         {
1078             WARN("Unicode string has odd number of bytes\n");
1079             hr = STG_E_INVALIDHEADER;
1080         }
1081         else
1082         {
1083             prop->u.pszVal = CoTaskMemAlloc(count);
1084             if (prop->u.pszVal)
1085             {
1086                 memcpy(prop->u.pszVal, data + sizeof(DWORD), count);
1087                 /* This is stored in the code page specified in This->codePage.
1088                  * Don't convert it, the caller will just store it as-is.
1089                  */
1090                 if (This->codePage == CP_UNICODE)
1091                 {
1092                     /* Make sure it's NULL-terminated */
1093                     prop->u.pszVal[count / sizeof(WCHAR) - 1] = '\0';
1094                     TRACE("Read string value %s\n",
1095                      debugstr_w(prop->u.pwszVal));
1096                 }
1097                 else
1098                 {
1099                     /* Make sure it's NULL-terminated */
1100                     prop->u.pszVal[count - 1] = '\0';
1101                     TRACE("Read string value %s\n", debugstr_a(prop->u.pszVal));
1102                 }
1103             }
1104             else
1105                 hr = STG_E_INSUFFICIENTMEMORY;
1106         }
1107         break;
1108     }
1109     case VT_LPWSTR:
1110     {
1111         DWORD count;
1112
1113         StorageUtl_ReadDWord(data, 0, &count);
1114         prop->u.pwszVal = CoTaskMemAlloc(count * sizeof(WCHAR));
1115         if (prop->u.pwszVal)
1116         {
1117             memcpy(prop->u.pwszVal, data + sizeof(DWORD),
1118              count * sizeof(WCHAR));
1119             /* make sure string is NULL-terminated */
1120             prop->u.pwszVal[count - 1] = '\0';
1121             PropertyStorage_ByteSwapString(prop->u.pwszVal, count);
1122             TRACE("Read string value %s\n", debugstr_w(prop->u.pwszVal));
1123         }
1124         else
1125             hr = STG_E_INSUFFICIENTMEMORY;
1126         break;
1127     }
1128     case VT_FILETIME:
1129         StorageUtl_ReadULargeInteger(data, 0,
1130          (ULARGE_INTEGER *)&prop->u.filetime);
1131         break;
1132     case VT_CF:
1133         {
1134             DWORD len = 0, tag = 0;
1135
1136             StorageUtl_ReadDWord(data, 0, &len);
1137             StorageUtl_ReadDWord(data, 4, &tag);
1138             if (len > 8)
1139             {
1140                 len -= 8;
1141                 prop->u.pclipdata = CoTaskMemAlloc(sizeof (CLIPDATA));
1142                 prop->u.pclipdata->cbSize = len;
1143                 prop->u.pclipdata->ulClipFmt = tag;
1144                 prop->u.pclipdata->pClipData = CoTaskMemAlloc(len - sizeof(prop->u.pclipdata->ulClipFmt));
1145                 memcpy(prop->u.pclipdata->pClipData, data+8, len - sizeof(prop->u.pclipdata->ulClipFmt));
1146             }
1147             else
1148                 hr = STG_E_INVALIDPARAMETER;
1149         }
1150         break;
1151     default:
1152         FIXME("unsupported type %d\n", prop->vt);
1153         hr = STG_E_INVALIDPARAMETER;
1154     }
1155     return hr;
1156 }
1157
1158 static HRESULT PropertyStorage_ReadHeaderFromStream(IStream *stm,
1159  PROPERTYSETHEADER *hdr)
1160 {
1161     BYTE buf[sizeof(PROPERTYSETHEADER)];
1162     ULONG count = 0;
1163     HRESULT hr;
1164
1165     assert(stm);
1166     assert(hdr);
1167     hr = IStream_Read(stm, buf, sizeof(buf), &count);
1168     if (SUCCEEDED(hr))
1169     {
1170         if (count != sizeof(buf))
1171         {
1172             WARN("read only %d\n", count);
1173             hr = STG_E_INVALIDHEADER;
1174         }
1175         else
1176         {
1177             StorageUtl_ReadWord(buf, offsetof(PROPERTYSETHEADER, wByteOrder),
1178              &hdr->wByteOrder);
1179             StorageUtl_ReadWord(buf, offsetof(PROPERTYSETHEADER, wFormat),
1180              &hdr->wFormat);
1181             StorageUtl_ReadDWord(buf, offsetof(PROPERTYSETHEADER, dwOSVer),
1182              &hdr->dwOSVer);
1183             StorageUtl_ReadGUID(buf, offsetof(PROPERTYSETHEADER, clsid),
1184              &hdr->clsid);
1185             StorageUtl_ReadDWord(buf, offsetof(PROPERTYSETHEADER, reserved),
1186              &hdr->reserved);
1187         }
1188     }
1189     TRACE("returning 0x%08x\n", hr);
1190     return hr;
1191 }
1192
1193 static HRESULT PropertyStorage_ReadFmtIdOffsetFromStream(IStream *stm,
1194  FORMATIDOFFSET *fmt)
1195 {
1196     BYTE buf[sizeof(FORMATIDOFFSET)];
1197     ULONG count = 0;
1198     HRESULT hr;
1199
1200     assert(stm);
1201     assert(fmt);
1202     hr = IStream_Read(stm, buf, sizeof(buf), &count);
1203     if (SUCCEEDED(hr))
1204     {
1205         if (count != sizeof(buf))
1206         {
1207             WARN("read only %d\n", count);
1208             hr = STG_E_INVALIDHEADER;
1209         }
1210         else
1211         {
1212             StorageUtl_ReadGUID(buf, offsetof(FORMATIDOFFSET, fmtid),
1213              &fmt->fmtid);
1214             StorageUtl_ReadDWord(buf, offsetof(FORMATIDOFFSET, dwOffset),
1215              &fmt->dwOffset);
1216         }
1217     }
1218     TRACE("returning 0x%08x\n", hr);
1219     return hr;
1220 }
1221
1222 static HRESULT PropertyStorage_ReadSectionHeaderFromStream(IStream *stm,
1223  PROPERTYSECTIONHEADER *hdr)
1224 {
1225     BYTE buf[sizeof(PROPERTYSECTIONHEADER)];
1226     ULONG count = 0;
1227     HRESULT hr;
1228
1229     assert(stm);
1230     assert(hdr);
1231     hr = IStream_Read(stm, buf, sizeof(buf), &count);
1232     if (SUCCEEDED(hr))
1233     {
1234         if (count != sizeof(buf))
1235         {
1236             WARN("read only %d\n", count);
1237             hr = STG_E_INVALIDHEADER;
1238         }
1239         else
1240         {
1241             StorageUtl_ReadDWord(buf, offsetof(PROPERTYSECTIONHEADER,
1242              cbSection), &hdr->cbSection);
1243             StorageUtl_ReadDWord(buf, offsetof(PROPERTYSECTIONHEADER,
1244              cProperties), &hdr->cProperties);
1245         }
1246     }
1247     TRACE("returning 0x%08x\n", hr);
1248     return hr;
1249 }
1250
1251 static HRESULT PropertyStorage_ReadFromStream(PropertyStorage_impl *This)
1252 {
1253     PROPERTYSETHEADER hdr;
1254     FORMATIDOFFSET fmtOffset;
1255     PROPERTYSECTIONHEADER sectionHdr;
1256     LARGE_INTEGER seek;
1257     ULONG i;
1258     STATSTG stat;
1259     HRESULT hr;
1260     BYTE *buf = NULL;
1261     ULONG count = 0;
1262     DWORD dictOffset = 0;
1263
1264     This->dirty = FALSE;
1265     This->highestProp = 0;
1266     hr = IStream_Stat(This->stm, &stat, STATFLAG_NONAME);
1267     if (FAILED(hr))
1268         goto end;
1269     if (stat.cbSize.u.HighPart)
1270     {
1271         WARN("stream too big\n");
1272         /* maximum size varies, but it can't be this big */
1273         hr = STG_E_INVALIDHEADER;
1274         goto end;
1275     }
1276     if (stat.cbSize.u.LowPart == 0)
1277     {
1278         /* empty stream is okay */
1279         hr = S_OK;
1280         goto end;
1281     }
1282     else if (stat.cbSize.u.LowPart < sizeof(PROPERTYSETHEADER) +
1283      sizeof(FORMATIDOFFSET))
1284     {
1285         WARN("stream too small\n");
1286         hr = STG_E_INVALIDHEADER;
1287         goto end;
1288     }
1289     seek.QuadPart = 0;
1290     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1291     if (FAILED(hr))
1292         goto end;
1293     hr = PropertyStorage_ReadHeaderFromStream(This->stm, &hdr);
1294     /* I've only seen reserved == 1, but the article says I shouldn't disallow
1295      * higher values.
1296      */
1297     if (hdr.wByteOrder != PROPSETHDR_BYTEORDER_MAGIC || hdr.reserved < 1)
1298     {
1299         WARN("bad magic in prop set header\n");
1300         hr = STG_E_INVALIDHEADER;
1301         goto end;
1302     }
1303     if (hdr.wFormat != 0 && hdr.wFormat != 1)
1304     {
1305         WARN("bad format version %d\n", hdr.wFormat);
1306         hr = STG_E_INVALIDHEADER;
1307         goto end;
1308     }
1309     This->format = hdr.wFormat;
1310     This->clsid = hdr.clsid;
1311     This->originatorOS = hdr.dwOSVer;
1312     if (PROPSETHDR_OSVER_KIND(hdr.dwOSVer) == PROPSETHDR_OSVER_KIND_MAC)
1313         WARN("File comes from a Mac, strings will probably be screwed up\n");
1314     hr = PropertyStorage_ReadFmtIdOffsetFromStream(This->stm, &fmtOffset);
1315     if (FAILED(hr))
1316         goto end;
1317     if (fmtOffset.dwOffset > stat.cbSize.u.LowPart)
1318     {
1319         WARN("invalid offset %d (stream length is %d)\n", fmtOffset.dwOffset,
1320          stat.cbSize.u.LowPart);
1321         hr = STG_E_INVALIDHEADER;
1322         goto end;
1323     }
1324     /* wackiness alert: if the format ID is FMTID_DocSummaryInformation, there
1325      * follow not one, but two sections.  The first is the standard properties
1326      * for the document summary information, and the second is user-defined
1327      * properties.  This is the only case in which multiple sections are
1328      * allowed.
1329      * Reading the second stream isn't implemented yet.
1330      */
1331     hr = PropertyStorage_ReadSectionHeaderFromStream(This->stm, &sectionHdr);
1332     if (FAILED(hr))
1333         goto end;
1334     /* The section size includes the section header, so check it */
1335     if (sectionHdr.cbSection < sizeof(PROPERTYSECTIONHEADER))
1336     {
1337         WARN("section header too small, got %d\n", sectionHdr.cbSection);
1338         hr = STG_E_INVALIDHEADER;
1339         goto end;
1340     }
1341     buf = HeapAlloc(GetProcessHeap(), 0, sectionHdr.cbSection -
1342      sizeof(PROPERTYSECTIONHEADER));
1343     if (!buf)
1344     {
1345         hr = STG_E_INSUFFICIENTMEMORY;
1346         goto end;
1347     }
1348     hr = IStream_Read(This->stm, buf, sectionHdr.cbSection -
1349      sizeof(PROPERTYSECTIONHEADER), &count);
1350     if (FAILED(hr))
1351         goto end;
1352     TRACE("Reading %d properties:\n", sectionHdr.cProperties);
1353     for (i = 0; SUCCEEDED(hr) && i < sectionHdr.cProperties; i++)
1354     {
1355         PROPERTYIDOFFSET *idOffset = (PROPERTYIDOFFSET *)(buf +
1356          i * sizeof(PROPERTYIDOFFSET));
1357
1358         if (idOffset->dwOffset < sizeof(PROPERTYSECTIONHEADER) ||
1359          idOffset->dwOffset > sectionHdr.cbSection - sizeof(DWORD))
1360             hr = STG_E_INVALIDPOINTER;
1361         else
1362         {
1363             if (idOffset->propid >= PID_FIRST_USABLE &&
1364              idOffset->propid < PID_MIN_READONLY && idOffset->propid >
1365              This->highestProp)
1366                 This->highestProp = idOffset->propid;
1367             if (idOffset->propid == PID_DICTIONARY)
1368             {
1369                 /* Don't read the dictionary yet, its entries depend on the
1370                  * code page.  Just store the offset so we know to read it
1371                  * later.
1372                  */
1373                 dictOffset = idOffset->dwOffset;
1374                 TRACE("Dictionary offset is %d\n", dictOffset);
1375             }
1376             else
1377             {
1378                 PROPVARIANT prop;
1379
1380                 PropVariantInit(&prop);
1381                 if (SUCCEEDED(PropertyStorage_ReadProperty(This, &prop,
1382                  buf + idOffset->dwOffset - sizeof(PROPERTYSECTIONHEADER))))
1383                 {
1384                     TRACE("Read property with ID 0x%08x, type %d\n",
1385                      idOffset->propid, prop.vt);
1386                     switch(idOffset->propid)
1387                     {
1388                     case PID_CODEPAGE:
1389                         if (prop.vt == VT_I2)
1390                             This->codePage = (UINT)prop.u.iVal;
1391                         break;
1392                     case PID_LOCALE:
1393                         if (prop.vt == VT_I4)
1394                             This->locale = (LCID)prop.u.lVal;
1395                         break;
1396                     case PID_BEHAVIOR:
1397                         if (prop.vt == VT_I4 && prop.u.lVal)
1398                             This->grfFlags |= PROPSETFLAG_CASE_SENSITIVE;
1399                         /* The format should already be 1, but just in case */
1400                         This->format = 1;
1401                         break;
1402                     default:
1403                         hr = PropertyStorage_StorePropWithId(This,
1404                          idOffset->propid, &prop, This->codePage);
1405                     }
1406                 }
1407                 PropVariantClear(&prop);
1408             }
1409         }
1410     }
1411     if (!This->codePage)
1412     {
1413         /* default to Unicode unless told not to, as specified on msdn */
1414         if (This->grfFlags & PROPSETFLAG_ANSI)
1415             This->codePage = GetACP();
1416         else
1417             This->codePage = CP_UNICODE;
1418     }
1419     if (!This->locale)
1420         This->locale = LOCALE_SYSTEM_DEFAULT;
1421     TRACE("Code page is %d, locale is %d\n", This->codePage, This->locale);
1422     if (dictOffset)
1423         hr = PropertyStorage_ReadDictionary(This,
1424          buf + dictOffset - sizeof(PROPERTYSECTIONHEADER));
1425
1426 end:
1427     HeapFree(GetProcessHeap(), 0, buf);
1428     if (FAILED(hr))
1429     {
1430         dictionary_destroy(This->name_to_propid);
1431         This->name_to_propid = NULL;
1432         dictionary_destroy(This->propid_to_name);
1433         This->propid_to_name = NULL;
1434         dictionary_destroy(This->propid_to_prop);
1435         This->propid_to_prop = NULL;
1436     }
1437     return hr;
1438 }
1439
1440 static void PropertyStorage_MakeHeader(PropertyStorage_impl *This,
1441  PROPERTYSETHEADER *hdr)
1442 {
1443     assert(hdr);
1444     StorageUtl_WriteWord((BYTE *)&hdr->wByteOrder, 0,
1445      PROPSETHDR_BYTEORDER_MAGIC);
1446     StorageUtl_WriteWord((BYTE *)&hdr->wFormat, 0, This->format);
1447     StorageUtl_WriteDWord((BYTE *)&hdr->dwOSVer, 0, This->originatorOS);
1448     StorageUtl_WriteGUID((BYTE *)&hdr->clsid, 0, &This->clsid);
1449     StorageUtl_WriteDWord((BYTE *)&hdr->reserved, 0, 1);
1450 }
1451
1452 static void PropertyStorage_MakeFmtIdOffset(PropertyStorage_impl *This,
1453  FORMATIDOFFSET *fmtOffset)
1454 {
1455     assert(fmtOffset);
1456     StorageUtl_WriteGUID((BYTE *)fmtOffset, 0, &This->fmtid);
1457     StorageUtl_WriteDWord((BYTE *)fmtOffset, offsetof(FORMATIDOFFSET, dwOffset),
1458      sizeof(PROPERTYSETHEADER) + sizeof(FORMATIDOFFSET));
1459 }
1460
1461 static void PropertyStorage_MakeSectionHdr(DWORD cbSection, DWORD numProps,
1462  PROPERTYSECTIONHEADER *hdr)
1463 {
1464     assert(hdr);
1465     StorageUtl_WriteDWord((BYTE *)hdr, 0, cbSection);
1466     StorageUtl_WriteDWord((BYTE *)hdr,
1467      offsetof(PROPERTYSECTIONHEADER, cProperties), numProps);
1468 }
1469
1470 static void PropertyStorage_MakePropertyIdOffset(DWORD propid, DWORD dwOffset,
1471  PROPERTYIDOFFSET *propIdOffset)
1472 {
1473     assert(propIdOffset);
1474     StorageUtl_WriteDWord((BYTE *)propIdOffset, 0, propid);
1475     StorageUtl_WriteDWord((BYTE *)propIdOffset,
1476      offsetof(PROPERTYIDOFFSET, dwOffset), dwOffset);
1477 }
1478
1479 static inline HRESULT PropertStorage_WriteWStringToStream(IStream *stm,
1480  LPCWSTR str, DWORD len, DWORD *written)
1481 {
1482 #ifdef WORDS_BIGENDIAN
1483     WCHAR *leStr = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
1484     HRESULT hr;
1485
1486     if (!leStr)
1487         return E_OUTOFMEMORY;
1488     memcpy(leStr, str, len * sizeof(WCHAR));
1489     PropertyStorage_ByteSwapString(leStr, len);
1490     hr = IStream_Write(stm, leStr, len, written);
1491     HeapFree(GetProcessHeap(), 0, leStr);
1492     return hr;
1493 #else
1494     return IStream_Write(stm, str, len, written);
1495 #endif
1496 }
1497
1498 struct DictionaryClosure
1499 {
1500     HRESULT hr;
1501     DWORD bytesWritten;
1502 };
1503
1504 static BOOL PropertyStorage_DictionaryWriter(const void *key,
1505  const void *value, void *extra, void *closure)
1506 {
1507     PropertyStorage_impl *This = extra;
1508     struct DictionaryClosure *c = closure;
1509     DWORD propid;
1510     ULONG count;
1511
1512     assert(key);
1513     assert(closure);
1514     StorageUtl_WriteDWord((LPBYTE)&propid, 0, PtrToUlong(value));
1515     c->hr = IStream_Write(This->stm, &propid, sizeof(propid), &count);
1516     if (FAILED(c->hr))
1517         goto end;
1518     c->bytesWritten += sizeof(DWORD);
1519     if (This->codePage == CP_UNICODE)
1520     {
1521         DWORD keyLen, pad = 0;
1522
1523         StorageUtl_WriteDWord((LPBYTE)&keyLen, 0,
1524          (lstrlenW((LPCWSTR)key) + 1) * sizeof(WCHAR));
1525         c->hr = IStream_Write(This->stm, &keyLen, sizeof(keyLen), &count);
1526         if (FAILED(c->hr))
1527             goto end;
1528         c->bytesWritten += sizeof(DWORD);
1529         c->hr = PropertStorage_WriteWStringToStream(This->stm, key, keyLen,
1530          &count);
1531         if (FAILED(c->hr))
1532             goto end;
1533         c->bytesWritten += keyLen * sizeof(WCHAR);
1534         if (keyLen % sizeof(DWORD))
1535         {
1536             c->hr = IStream_Write(This->stm, &pad,
1537              sizeof(DWORD) - keyLen % sizeof(DWORD), &count);
1538             if (FAILED(c->hr))
1539                 goto end;
1540             c->bytesWritten += sizeof(DWORD) - keyLen % sizeof(DWORD);
1541         }
1542     }
1543     else
1544     {
1545         DWORD keyLen;
1546
1547         StorageUtl_WriteDWord((LPBYTE)&keyLen, 0, strlen((LPCSTR)key) + 1);
1548         c->hr = IStream_Write(This->stm, &keyLen, sizeof(keyLen), &count);
1549         if (FAILED(c->hr))
1550             goto end;
1551         c->bytesWritten += sizeof(DWORD);
1552         c->hr = IStream_Write(This->stm, key, keyLen, &count);
1553         if (FAILED(c->hr))
1554             goto end;
1555         c->bytesWritten += keyLen;
1556     }
1557 end:
1558     return SUCCEEDED(c->hr);
1559 }
1560
1561 #define SECTIONHEADER_OFFSET sizeof(PROPERTYSETHEADER) + sizeof(FORMATIDOFFSET)
1562
1563 /* Writes the dictionary to the stream.  Assumes without checking that the
1564  * dictionary isn't empty.
1565  */
1566 static HRESULT PropertyStorage_WriteDictionaryToStream(
1567  PropertyStorage_impl *This, DWORD *sectionOffset)
1568 {
1569     HRESULT hr;
1570     LARGE_INTEGER seek;
1571     PROPERTYIDOFFSET propIdOffset;
1572     ULONG count;
1573     DWORD dwTemp;
1574     struct DictionaryClosure closure;
1575
1576     assert(sectionOffset);
1577
1578     /* The dictionary's always the first property written, so seek to its
1579      * spot.
1580      */
1581     seek.QuadPart = SECTIONHEADER_OFFSET + sizeof(PROPERTYSECTIONHEADER);
1582     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1583     if (FAILED(hr))
1584         goto end;
1585     PropertyStorage_MakePropertyIdOffset(PID_DICTIONARY, *sectionOffset,
1586      &propIdOffset);
1587     hr = IStream_Write(This->stm, &propIdOffset, sizeof(propIdOffset), &count);
1588     if (FAILED(hr))
1589         goto end;
1590
1591     seek.QuadPart = SECTIONHEADER_OFFSET + *sectionOffset;
1592     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1593     if (FAILED(hr))
1594         goto end;
1595     StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0,
1596      dictionary_num_entries(This->name_to_propid));
1597     hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
1598     if (FAILED(hr))
1599         goto end;
1600     *sectionOffset += sizeof(dwTemp);
1601
1602     closure.hr = S_OK;
1603     closure.bytesWritten = 0;
1604     dictionary_enumerate(This->name_to_propid, PropertyStorage_DictionaryWriter,
1605      &closure);
1606     hr = closure.hr;
1607     if (FAILED(hr))
1608         goto end;
1609     *sectionOffset += closure.bytesWritten;
1610     if (closure.bytesWritten % sizeof(DWORD))
1611     {
1612         DWORD padding = sizeof(DWORD) - closure.bytesWritten % sizeof(DWORD);
1613         TRACE("adding %d bytes of padding\n", padding);
1614         *sectionOffset += padding;
1615     }
1616
1617 end:
1618     return hr;
1619 }
1620
1621 static HRESULT PropertyStorage_WritePropertyToStream(PropertyStorage_impl *This,
1622  DWORD propNum, DWORD propid, const PROPVARIANT *var, DWORD *sectionOffset)
1623 {
1624     HRESULT hr;
1625     LARGE_INTEGER seek;
1626     PROPERTYIDOFFSET propIdOffset;
1627     ULONG count;
1628     DWORD dwType, bytesWritten;
1629
1630     assert(var);
1631     assert(sectionOffset);
1632
1633     TRACE("%p, %d, 0x%08x, (%d), (%d)\n", This, propNum, propid, var->vt,
1634      *sectionOffset);
1635
1636     seek.QuadPart = SECTIONHEADER_OFFSET + sizeof(PROPERTYSECTIONHEADER) +
1637      propNum * sizeof(PROPERTYIDOFFSET);
1638     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1639     if (FAILED(hr))
1640         goto end;
1641     PropertyStorage_MakePropertyIdOffset(propid, *sectionOffset, &propIdOffset);
1642     hr = IStream_Write(This->stm, &propIdOffset, sizeof(propIdOffset), &count);
1643     if (FAILED(hr))
1644         goto end;
1645
1646     seek.QuadPart = SECTIONHEADER_OFFSET + *sectionOffset;
1647     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1648     if (FAILED(hr))
1649         goto end;
1650     StorageUtl_WriteDWord((LPBYTE)&dwType, 0, var->vt);
1651     hr = IStream_Write(This->stm, &dwType, sizeof(dwType), &count);
1652     if (FAILED(hr))
1653         goto end;
1654     *sectionOffset += sizeof(dwType);
1655
1656     switch (var->vt)
1657     {
1658     case VT_EMPTY:
1659     case VT_NULL:
1660         bytesWritten = 0;
1661         break;
1662     case VT_I1:
1663     case VT_UI1:
1664         hr = IStream_Write(This->stm, &var->u.cVal, sizeof(var->u.cVal),
1665          &count);
1666         bytesWritten = count;
1667         break;
1668     case VT_I2:
1669     case VT_UI2:
1670     {
1671         WORD wTemp;
1672
1673         StorageUtl_WriteWord((LPBYTE)&wTemp, 0, var->u.iVal);
1674         hr = IStream_Write(This->stm, &wTemp, sizeof(wTemp), &count);
1675         bytesWritten = count;
1676         break;
1677     }
1678     case VT_I4:
1679     case VT_UI4:
1680     {
1681         DWORD dwTemp;
1682
1683         StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, var->u.lVal);
1684         hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
1685         bytesWritten = count;
1686         break;
1687     }
1688     case VT_LPSTR:
1689     {
1690         DWORD len, dwTemp;
1691
1692         if (This->codePage == CP_UNICODE)
1693             len = (lstrlenW(var->u.pwszVal) + 1) * sizeof(WCHAR);
1694         else
1695             len = lstrlenA(var->u.pszVal) + 1;
1696         StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, len);
1697         hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
1698         if (FAILED(hr))
1699             goto end;
1700         hr = IStream_Write(This->stm, var->u.pszVal, len, &count);
1701         bytesWritten = count + sizeof(DWORD);
1702         break;
1703     }
1704     case VT_LPWSTR:
1705     {
1706         DWORD len = lstrlenW(var->u.pwszVal) + 1, dwTemp;
1707
1708         StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, len);
1709         hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
1710         if (FAILED(hr))
1711             goto end;
1712         hr = IStream_Write(This->stm, var->u.pwszVal, len * sizeof(WCHAR),
1713          &count);
1714         bytesWritten = count + sizeof(DWORD);
1715         break;
1716     }
1717     case VT_FILETIME:
1718     {
1719         FILETIME temp;
1720
1721         StorageUtl_WriteULargeInteger((BYTE *)&temp, 0,
1722          (const ULARGE_INTEGER *)&var->u.filetime);
1723         hr = IStream_Write(This->stm, &temp, sizeof(FILETIME), &count);
1724         bytesWritten = count;
1725         break;
1726     }
1727     case VT_CF:
1728     {
1729         DWORD cf_hdr[2], len;
1730
1731         len = var->u.pclipdata->cbSize;
1732         StorageUtl_WriteDWord((LPBYTE)&cf_hdr[0], 0, len + 8);
1733         StorageUtl_WriteDWord((LPBYTE)&cf_hdr[1], 0, var->u.pclipdata->ulClipFmt);
1734         hr = IStream_Write(This->stm, cf_hdr, sizeof(cf_hdr), &count);
1735         if (FAILED(hr))
1736             goto end;
1737         hr = IStream_Write(This->stm, var->u.pclipdata->pClipData,
1738                            len - sizeof(var->u.pclipdata->ulClipFmt), &count);
1739         if (FAILED(hr))
1740             goto end;
1741         bytesWritten = count + sizeof cf_hdr;
1742         break;
1743     }
1744     default:
1745         FIXME("unsupported type: %d\n", var->vt);
1746         return STG_E_INVALIDPARAMETER;
1747     }
1748
1749     if (SUCCEEDED(hr))
1750     {
1751         *sectionOffset += bytesWritten;
1752         if (bytesWritten % sizeof(DWORD))
1753         {
1754             DWORD padding = sizeof(DWORD) - bytesWritten % sizeof(DWORD);
1755             TRACE("adding %d bytes of padding\n", padding);
1756             *sectionOffset += padding;
1757         }
1758     }
1759
1760 end:
1761     return hr;
1762 }
1763
1764 struct PropertyClosure
1765 {
1766     HRESULT hr;
1767     DWORD   propNum;
1768     DWORD  *sectionOffset;
1769 };
1770
1771 static BOOL PropertyStorage_PropertiesWriter(const void *key, const void *value,
1772  void *extra, void *closure)
1773 {
1774     PropertyStorage_impl *This = extra;
1775     struct PropertyClosure *c = closure;
1776
1777     assert(key);
1778     assert(value);
1779     assert(extra);
1780     assert(closure);
1781     c->hr = PropertyStorage_WritePropertyToStream(This, c->propNum++,
1782                                                   PtrToUlong(key), value, c->sectionOffset);
1783     return SUCCEEDED(c->hr);
1784 }
1785
1786 static HRESULT PropertyStorage_WritePropertiesToStream(
1787  PropertyStorage_impl *This, DWORD startingPropNum, DWORD *sectionOffset)
1788 {
1789     struct PropertyClosure closure;
1790
1791     assert(sectionOffset);
1792     closure.hr = S_OK;
1793     closure.propNum = startingPropNum;
1794     closure.sectionOffset = sectionOffset;
1795     dictionary_enumerate(This->propid_to_prop, PropertyStorage_PropertiesWriter,
1796      &closure);
1797     return closure.hr;
1798 }
1799
1800 static HRESULT PropertyStorage_WriteHeadersToStream(PropertyStorage_impl *This)
1801 {
1802     HRESULT hr;
1803     ULONG count = 0;
1804     LARGE_INTEGER seek = { {0} };
1805     PROPERTYSETHEADER hdr;
1806     FORMATIDOFFSET fmtOffset;
1807
1808     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1809     if (FAILED(hr))
1810         goto end;
1811     PropertyStorage_MakeHeader(This, &hdr);
1812     hr = IStream_Write(This->stm, &hdr, sizeof(hdr), &count);
1813     if (FAILED(hr))
1814         goto end;
1815     if (count != sizeof(hdr))
1816     {
1817         hr = STG_E_WRITEFAULT;
1818         goto end;
1819     }
1820
1821     PropertyStorage_MakeFmtIdOffset(This, &fmtOffset);
1822     hr = IStream_Write(This->stm, &fmtOffset, sizeof(fmtOffset), &count);
1823     if (FAILED(hr))
1824         goto end;
1825     if (count != sizeof(fmtOffset))
1826     {
1827         hr = STG_E_WRITEFAULT;
1828         goto end;
1829     }
1830     hr = S_OK;
1831
1832 end:
1833     return hr;
1834 }
1835
1836 static HRESULT PropertyStorage_WriteToStream(PropertyStorage_impl *This)
1837 {
1838     PROPERTYSECTIONHEADER sectionHdr;
1839     HRESULT hr;
1840     ULONG count;
1841     LARGE_INTEGER seek;
1842     DWORD numProps, prop, sectionOffset, dwTemp;
1843     PROPVARIANT var;
1844
1845     PropertyStorage_WriteHeadersToStream(This);
1846
1847     /* Count properties.  Always at least one property, the code page */
1848     numProps = 1;
1849     if (dictionary_num_entries(This->name_to_propid))
1850         numProps++;
1851     if (This->locale != LOCALE_SYSTEM_DEFAULT)
1852         numProps++;
1853     if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
1854         numProps++;
1855     numProps += dictionary_num_entries(This->propid_to_prop);
1856
1857     /* Write section header with 0 bytes right now, I'll adjust it after
1858      * writing properties.
1859      */
1860     PropertyStorage_MakeSectionHdr(0, numProps, &sectionHdr);
1861     seek.QuadPart = SECTIONHEADER_OFFSET;
1862     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1863     if (FAILED(hr))
1864         goto end;
1865     hr = IStream_Write(This->stm, &sectionHdr, sizeof(sectionHdr), &count);
1866     if (FAILED(hr))
1867         goto end;
1868
1869     prop = 0;
1870     sectionOffset = sizeof(PROPERTYSECTIONHEADER) +
1871      numProps * sizeof(PROPERTYIDOFFSET);
1872
1873     if (dictionary_num_entries(This->name_to_propid))
1874     {
1875         prop++;
1876         hr = PropertyStorage_WriteDictionaryToStream(This, &sectionOffset);
1877         if (FAILED(hr))
1878             goto end;
1879     }
1880
1881     PropVariantInit(&var);
1882
1883     var.vt = VT_I2;
1884     var.u.iVal = This->codePage;
1885     hr = PropertyStorage_WritePropertyToStream(This, prop++, PID_CODEPAGE,
1886      &var, &sectionOffset);
1887     if (FAILED(hr))
1888         goto end;
1889
1890     if (This->locale != LOCALE_SYSTEM_DEFAULT)
1891     {
1892         var.vt = VT_I4;
1893         var.u.lVal = This->locale;
1894         hr = PropertyStorage_WritePropertyToStream(This, prop++, PID_LOCALE,
1895          &var, &sectionOffset);
1896         if (FAILED(hr))
1897             goto end;
1898     }
1899
1900     if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
1901     {
1902         var.vt = VT_I4;
1903         var.u.lVal = 1;
1904         hr = PropertyStorage_WritePropertyToStream(This, prop++, PID_BEHAVIOR,
1905          &var, &sectionOffset);
1906         if (FAILED(hr))
1907             goto end;
1908     }
1909
1910     hr = PropertyStorage_WritePropertiesToStream(This, prop, &sectionOffset);
1911     if (FAILED(hr))
1912         goto end;
1913
1914     /* Now write the byte count of the section */
1915     seek.QuadPart = SECTIONHEADER_OFFSET;
1916     hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
1917     if (FAILED(hr))
1918         goto end;
1919     StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, sectionOffset);
1920     hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
1921
1922 end:
1923     return hr;
1924 }
1925
1926 /***********************************************************************
1927  * PropertyStorage_Construct
1928  */
1929 static void PropertyStorage_DestroyDictionaries(PropertyStorage_impl *This)
1930 {
1931     dictionary_destroy(This->name_to_propid);
1932     This->name_to_propid = NULL;
1933     dictionary_destroy(This->propid_to_name);
1934     This->propid_to_name = NULL;
1935     dictionary_destroy(This->propid_to_prop);
1936     This->propid_to_prop = NULL;
1937 }
1938
1939 static HRESULT PropertyStorage_CreateDictionaries(PropertyStorage_impl *This)
1940 {
1941     HRESULT hr = S_OK;
1942
1943     This->name_to_propid = dictionary_create(
1944      PropertyStorage_PropNameCompare, PropertyStorage_PropNameDestroy,
1945      This);
1946     if (!This->name_to_propid)
1947     {
1948         hr = STG_E_INSUFFICIENTMEMORY;
1949         goto end;
1950     }
1951     This->propid_to_name = dictionary_create(PropertyStorage_PropCompare,
1952      NULL, This);
1953     if (!This->propid_to_name)
1954     {
1955         hr = STG_E_INSUFFICIENTMEMORY;
1956         goto end;
1957     }
1958     This->propid_to_prop = dictionary_create(PropertyStorage_PropCompare,
1959      PropertyStorage_PropertyDestroy, This);
1960     if (!This->propid_to_prop)
1961     {
1962         hr = STG_E_INSUFFICIENTMEMORY;
1963         goto end;
1964     }
1965 end:
1966     if (FAILED(hr))
1967         PropertyStorage_DestroyDictionaries(This);
1968     return hr;
1969 }
1970
1971 static HRESULT PropertyStorage_BaseConstruct(IStream *stm,
1972  REFFMTID rfmtid, DWORD grfMode, PropertyStorage_impl **pps)
1973 {
1974     HRESULT hr = S_OK;
1975
1976     assert(pps);
1977     assert(rfmtid);
1978     *pps = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof **pps);
1979     if (!*pps)
1980         return E_OUTOFMEMORY;
1981
1982     (*pps)->vtbl = &IPropertyStorage_Vtbl;
1983     (*pps)->ref = 1;
1984     InitializeCriticalSection(&(*pps)->cs);
1985     (*pps)->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PropertyStorage_impl.cs");
1986     (*pps)->stm = stm;
1987     (*pps)->fmtid = *rfmtid;
1988     (*pps)->grfMode = grfMode;
1989
1990     hr = PropertyStorage_CreateDictionaries(*pps);
1991     if (FAILED(hr))
1992     {
1993         IStream_Release(stm);
1994         (*pps)->cs.DebugInfo->Spare[0] = 0;
1995         DeleteCriticalSection(&(*pps)->cs);
1996         HeapFree(GetProcessHeap(), 0, *pps);
1997         *pps = NULL;
1998     }
1999
2000     return hr;
2001 }
2002
2003 static HRESULT PropertyStorage_ConstructFromStream(IStream *stm,
2004  REFFMTID rfmtid, DWORD grfMode, IPropertyStorage** pps)
2005 {
2006     PropertyStorage_impl *ps;
2007     HRESULT hr;
2008
2009     assert(pps);
2010     hr = PropertyStorage_BaseConstruct(stm, rfmtid, grfMode, &ps);
2011     if (SUCCEEDED(hr))
2012     {
2013         hr = PropertyStorage_ReadFromStream(ps);
2014         if (SUCCEEDED(hr))
2015         {
2016             *pps = (IPropertyStorage *)ps;
2017             TRACE("PropertyStorage %p constructed\n", ps);
2018             hr = S_OK;
2019         }
2020         else
2021         {
2022             PropertyStorage_DestroyDictionaries(ps);
2023             HeapFree(GetProcessHeap(), 0, ps);
2024         }
2025     }
2026     return hr;
2027 }
2028
2029 static HRESULT PropertyStorage_ConstructEmpty(IStream *stm,
2030  REFFMTID rfmtid, DWORD grfFlags, DWORD grfMode, IPropertyStorage** pps)
2031 {
2032     PropertyStorage_impl *ps;
2033     HRESULT hr;
2034
2035     assert(pps);
2036     hr = PropertyStorage_BaseConstruct(stm, rfmtid, grfMode, &ps);
2037     if (SUCCEEDED(hr))
2038     {
2039         ps->format = 0;
2040         ps->grfFlags = grfFlags;
2041         if (ps->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
2042             ps->format = 1;
2043         /* default to Unicode unless told not to, as specified on msdn */
2044         if (ps->grfFlags & PROPSETFLAG_ANSI)
2045             ps->codePage = GetACP();
2046         else
2047             ps->codePage = CP_UNICODE;
2048         ps->locale = LOCALE_SYSTEM_DEFAULT;
2049         TRACE("Code page is %d, locale is %d\n", ps->codePage, ps->locale);
2050         *pps = (IPropertyStorage *)ps;
2051         TRACE("PropertyStorage %p constructed\n", ps);
2052         hr = S_OK;
2053     }
2054     return hr;
2055 }
2056
2057
2058 /***********************************************************************
2059  * Implementation of IPropertySetStorage
2060  */
2061
2062 /************************************************************************
2063  * IPropertySetStorage_fnQueryInterface (IUnknown)
2064  *
2065  *  This method forwards to the common QueryInterface implementation
2066  */
2067 static HRESULT WINAPI IPropertySetStorage_fnQueryInterface(
2068     IPropertySetStorage *ppstg,
2069     REFIID riid,
2070     void** ppvObject)
2071 {
2072     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2073     return IStorage_QueryInterface( (IStorage*)This, riid, ppvObject );
2074 }
2075
2076 /************************************************************************
2077  * IPropertySetStorage_fnAddRef (IUnknown)
2078  *
2079  *  This method forwards to the common AddRef implementation
2080  */
2081 static ULONG WINAPI IPropertySetStorage_fnAddRef(
2082     IPropertySetStorage *ppstg)
2083 {
2084     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2085     return IStorage_AddRef( (IStorage*)This );
2086 }
2087
2088 /************************************************************************
2089  * IPropertySetStorage_fnRelease (IUnknown)
2090  *
2091  *  This method forwards to the common Release implementation
2092  */
2093 static ULONG WINAPI IPropertySetStorage_fnRelease(
2094     IPropertySetStorage *ppstg)
2095 {
2096     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2097     return IStorage_Release( (IStorage*)This );
2098 }
2099
2100 /************************************************************************
2101  * IPropertySetStorage_fnCreate (IPropertySetStorage)
2102  */
2103 static HRESULT WINAPI IPropertySetStorage_fnCreate(
2104     IPropertySetStorage *ppstg,
2105     REFFMTID rfmtid,
2106     const CLSID* pclsid,
2107     DWORD grfFlags,
2108     DWORD grfMode,
2109     IPropertyStorage** ppprstg)
2110 {
2111     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2112     WCHAR name[CCH_MAX_PROPSTG_NAME];
2113     IStream *stm = NULL;
2114     HRESULT r;
2115
2116     TRACE("%p %s %08x %08x %p\n", This, debugstr_guid(rfmtid), grfFlags,
2117      grfMode, ppprstg);
2118
2119     /* be picky */
2120     if (grfMode != (STGM_CREATE|STGM_READWRITE|STGM_SHARE_EXCLUSIVE))
2121     {
2122         r = STG_E_INVALIDFLAG;
2123         goto end;
2124     }
2125
2126     if (!rfmtid)
2127     {
2128         r = E_INVALIDARG;
2129         goto end;
2130     }
2131
2132     /* FIXME: if (grfFlags & PROPSETFLAG_NONSIMPLE), we need to create a
2133      * storage, not a stream.  For now, disallow it.
2134      */
2135     if (grfFlags & PROPSETFLAG_NONSIMPLE)
2136     {
2137         FIXME("PROPSETFLAG_NONSIMPLE not supported\n");
2138         r = STG_E_INVALIDFLAG;
2139         goto end;
2140     }
2141
2142     r = FmtIdToPropStgName(rfmtid, name);
2143     if (FAILED(r))
2144         goto end;
2145
2146     r = IStorage_CreateStream( (IStorage*)This, name, grfMode, 0, 0, &stm );
2147     if (FAILED(r))
2148         goto end;
2149
2150     r = PropertyStorage_ConstructEmpty(stm, rfmtid, grfFlags, grfMode, ppprstg);
2151
2152 end:
2153     TRACE("returning 0x%08x\n", r);
2154     return r;
2155 }
2156
2157 /************************************************************************
2158  * IPropertySetStorage_fnOpen (IPropertySetStorage)
2159  */
2160 static HRESULT WINAPI IPropertySetStorage_fnOpen(
2161     IPropertySetStorage *ppstg,
2162     REFFMTID rfmtid,
2163     DWORD grfMode,
2164     IPropertyStorage** ppprstg)
2165 {
2166     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2167     IStream *stm = NULL;
2168     WCHAR name[CCH_MAX_PROPSTG_NAME];
2169     HRESULT r;
2170
2171     TRACE("%p %s %08x %p\n", This, debugstr_guid(rfmtid), grfMode, ppprstg);
2172
2173     /* be picky */
2174     if (grfMode != (STGM_READWRITE|STGM_SHARE_EXCLUSIVE) &&
2175         grfMode != (STGM_READ|STGM_SHARE_EXCLUSIVE))
2176     {
2177         r = STG_E_INVALIDFLAG;
2178         goto end;
2179     }
2180
2181     if (!rfmtid)
2182     {
2183         r = E_INVALIDARG;
2184         goto end;
2185     }
2186
2187     r = FmtIdToPropStgName(rfmtid, name);
2188     if (FAILED(r))
2189         goto end;
2190
2191     r = IStorage_OpenStream((IStorage*) This, name, 0, grfMode, 0, &stm );
2192     if (FAILED(r))
2193         goto end;
2194
2195     r = PropertyStorage_ConstructFromStream(stm, rfmtid, grfMode, ppprstg);
2196
2197 end:
2198     TRACE("returning 0x%08x\n", r);
2199     return r;
2200 }
2201
2202 /************************************************************************
2203  * IPropertySetStorage_fnDelete (IPropertySetStorage)
2204  */
2205 static HRESULT WINAPI IPropertySetStorage_fnDelete(
2206     IPropertySetStorage *ppstg,
2207     REFFMTID rfmtid)
2208 {
2209     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2210     IStorage *stg = NULL;
2211     WCHAR name[CCH_MAX_PROPSTG_NAME];
2212     HRESULT r;
2213
2214     TRACE("%p %s\n", This, debugstr_guid(rfmtid));
2215
2216     if (!rfmtid)
2217         return E_INVALIDARG;
2218
2219     r = FmtIdToPropStgName(rfmtid, name);
2220     if (FAILED(r))
2221         return r;
2222
2223     stg = (IStorage*) This;
2224     return IStorage_DestroyElement(stg, name);
2225 }
2226
2227 /************************************************************************
2228  * IPropertySetStorage_fnEnum (IPropertySetStorage)
2229  */
2230 static HRESULT WINAPI IPropertySetStorage_fnEnum(
2231     IPropertySetStorage *ppstg,
2232     IEnumSTATPROPSETSTG** ppenum)
2233 {
2234     StorageImpl *This = impl_from_IPropertySetStorage(ppstg);
2235     return create_EnumSTATPROPSETSTG(This, ppenum);
2236 }
2237
2238 /************************************************************************
2239  * Implement IEnumSTATPROPSETSTG using enumx
2240  */
2241 static HRESULT WINAPI IEnumSTATPROPSETSTG_fnQueryInterface(
2242     IEnumSTATPROPSETSTG *iface,
2243     REFIID riid,
2244     void** ppvObject)
2245 {
2246     return enumx_QueryInterface((enumx_impl*)iface, riid, ppvObject);
2247 }
2248
2249 static ULONG WINAPI IEnumSTATPROPSETSTG_fnAddRef(
2250     IEnumSTATPROPSETSTG *iface)
2251 {
2252     return enumx_AddRef((enumx_impl*)iface);
2253 }
2254
2255 static ULONG WINAPI IEnumSTATPROPSETSTG_fnRelease(
2256     IEnumSTATPROPSETSTG *iface)
2257 {
2258     return enumx_Release((enumx_impl*)iface);
2259 }
2260
2261 static HRESULT WINAPI IEnumSTATPROPSETSTG_fnNext(
2262     IEnumSTATPROPSETSTG *iface,
2263     ULONG celt,
2264     STATPROPSETSTG *rgelt,
2265     ULONG *pceltFetched)
2266 {
2267     return enumx_Next((enumx_impl*)iface, celt, rgelt, pceltFetched);
2268 }
2269
2270 static HRESULT WINAPI IEnumSTATPROPSETSTG_fnSkip(
2271     IEnumSTATPROPSETSTG *iface,
2272     ULONG celt)
2273 {
2274     return enumx_Skip((enumx_impl*)iface, celt);
2275 }
2276
2277 static HRESULT WINAPI IEnumSTATPROPSETSTG_fnReset(
2278     IEnumSTATPROPSETSTG *iface)
2279 {
2280     return enumx_Reset((enumx_impl*)iface);
2281 }
2282
2283 static HRESULT WINAPI IEnumSTATPROPSETSTG_fnClone(
2284     IEnumSTATPROPSETSTG *iface,
2285     IEnumSTATPROPSETSTG **ppenum)
2286 {
2287     return enumx_Clone((enumx_impl*)iface, (enumx_impl**)ppenum);
2288 }
2289
2290 static HRESULT create_EnumSTATPROPSETSTG(
2291     StorageImpl *This,
2292     IEnumSTATPROPSETSTG** ppenum)
2293 {
2294     IStorage *stg = (IStorage*) &This->base.lpVtbl;
2295     IEnumSTATSTG *penum = NULL;
2296     STATSTG stat;
2297     ULONG count;
2298     HRESULT r;
2299     STATPROPSETSTG statpss;
2300     enumx_impl *enumx;
2301
2302     TRACE("%p %p\n", This, ppenum);
2303
2304     enumx = enumx_allocate(&IID_IEnumSTATPROPSETSTG,
2305                            &IEnumSTATPROPSETSTG_Vtbl,
2306                            sizeof (STATPROPSETSTG));
2307
2308     /* add all the property set elements into a list */
2309     r = IStorage_EnumElements(stg, 0, NULL, 0, &penum);
2310     if (FAILED(r))
2311         return E_OUTOFMEMORY;
2312
2313     while (1)
2314     {
2315         count = 0;
2316         r = IEnumSTATSTG_Next(penum, 1, &stat, &count);
2317         if (FAILED(r))
2318             break;
2319         if (!count)
2320             break;
2321         if (!stat.pwcsName)
2322             continue;
2323         if (stat.pwcsName[0] == 5 && stat.type == STGTY_STREAM)
2324         {
2325             PropStgNameToFmtId(stat.pwcsName, &statpss.fmtid);
2326             TRACE("adding %s (%s)\n", debugstr_w(stat.pwcsName),
2327                   debugstr_guid(&statpss.fmtid));
2328             statpss.mtime = stat.mtime;
2329             statpss.atime = stat.atime;
2330             statpss.ctime = stat.ctime;
2331             statpss.grfFlags = stat.grfMode;
2332             statpss.clsid = stat.clsid;
2333             enumx_add_element(enumx, &statpss);
2334         }
2335         CoTaskMemFree(stat.pwcsName);
2336     }
2337     IEnumSTATSTG_Release(penum);
2338
2339     *ppenum = (IEnumSTATPROPSETSTG*) enumx;
2340
2341     return S_OK;
2342 }
2343
2344 /************************************************************************
2345  * Implement IEnumSTATPROPSTG using enumx
2346  */
2347 static HRESULT WINAPI IEnumSTATPROPSTG_fnQueryInterface(
2348     IEnumSTATPROPSTG *iface,
2349     REFIID riid,
2350     void** ppvObject)
2351 {
2352     return enumx_QueryInterface((enumx_impl*)iface, riid, ppvObject);
2353 }
2354
2355 static ULONG WINAPI IEnumSTATPROPSTG_fnAddRef(
2356     IEnumSTATPROPSTG *iface)
2357 {
2358     return enumx_AddRef((enumx_impl*)iface);
2359 }
2360
2361 static ULONG WINAPI IEnumSTATPROPSTG_fnRelease(
2362     IEnumSTATPROPSTG *iface)
2363 {
2364     return enumx_Release((enumx_impl*)iface);
2365 }
2366
2367 static HRESULT WINAPI IEnumSTATPROPSTG_fnNext(
2368     IEnumSTATPROPSTG *iface,
2369     ULONG celt,
2370     STATPROPSTG *rgelt,
2371     ULONG *pceltFetched)
2372 {
2373     return enumx_Next((enumx_impl*)iface, celt, rgelt, pceltFetched);
2374 }
2375
2376 static HRESULT WINAPI IEnumSTATPROPSTG_fnSkip(
2377     IEnumSTATPROPSTG *iface,
2378     ULONG celt)
2379 {
2380     return enumx_Skip((enumx_impl*)iface, celt);
2381 }
2382
2383 static HRESULT WINAPI IEnumSTATPROPSTG_fnReset(
2384     IEnumSTATPROPSTG *iface)
2385 {
2386     return enumx_Reset((enumx_impl*)iface);
2387 }
2388
2389 static HRESULT WINAPI IEnumSTATPROPSTG_fnClone(
2390     IEnumSTATPROPSTG *iface,
2391     IEnumSTATPROPSTG **ppenum)
2392 {
2393     return enumx_Clone((enumx_impl*)iface, (enumx_impl**)ppenum);
2394 }
2395
2396 static BOOL prop_enum_stat(const void *k, const void *v, void *extra, void *arg)
2397 {
2398     enumx_impl *enumx = arg;
2399     PROPID propid = PtrToUlong(k);
2400     const PROPVARIANT *prop = v;
2401     STATPROPSTG stat;
2402
2403     stat.lpwstrName = NULL;
2404     stat.propid = propid;
2405     stat.vt = prop->vt;
2406
2407     enumx_add_element(enumx, &stat);
2408
2409     return TRUE;
2410 }
2411
2412 static HRESULT create_EnumSTATPROPSTG(
2413     PropertyStorage_impl *This,
2414     IEnumSTATPROPSTG** ppenum)
2415 {
2416     enumx_impl *enumx;
2417
2418     TRACE("%p %p\n", This, ppenum);
2419
2420     enumx = enumx_allocate(&IID_IEnumSTATPROPSTG,
2421                            &IEnumSTATPROPSTG_Vtbl,
2422                            sizeof (STATPROPSTG));
2423
2424     dictionary_enumerate(This->propid_to_prop, prop_enum_stat, enumx);
2425
2426     *ppenum = (IEnumSTATPROPSTG*) enumx;
2427
2428     return S_OK;
2429 }
2430
2431 /***********************************************************************
2432  * vtables
2433  */
2434 const IPropertySetStorageVtbl IPropertySetStorage_Vtbl =
2435 {
2436     IPropertySetStorage_fnQueryInterface,
2437     IPropertySetStorage_fnAddRef,
2438     IPropertySetStorage_fnRelease,
2439     IPropertySetStorage_fnCreate,
2440     IPropertySetStorage_fnOpen,
2441     IPropertySetStorage_fnDelete,
2442     IPropertySetStorage_fnEnum
2443 };
2444
2445 static const IPropertyStorageVtbl IPropertyStorage_Vtbl =
2446 {
2447     IPropertyStorage_fnQueryInterface,
2448     IPropertyStorage_fnAddRef,
2449     IPropertyStorage_fnRelease,
2450     IPropertyStorage_fnReadMultiple,
2451     IPropertyStorage_fnWriteMultiple,
2452     IPropertyStorage_fnDeleteMultiple,
2453     IPropertyStorage_fnReadPropertyNames,
2454     IPropertyStorage_fnWritePropertyNames,
2455     IPropertyStorage_fnDeletePropertyNames,
2456     IPropertyStorage_fnCommit,
2457     IPropertyStorage_fnRevert,
2458     IPropertyStorage_fnEnum,
2459     IPropertyStorage_fnSetTimes,
2460     IPropertyStorage_fnSetClass,
2461     IPropertyStorage_fnStat,
2462 };
2463
2464 static const IEnumSTATPROPSETSTGVtbl IEnumSTATPROPSETSTG_Vtbl =
2465 {
2466     IEnumSTATPROPSETSTG_fnQueryInterface,
2467     IEnumSTATPROPSETSTG_fnAddRef,
2468     IEnumSTATPROPSETSTG_fnRelease,
2469     IEnumSTATPROPSETSTG_fnNext,
2470     IEnumSTATPROPSETSTG_fnSkip,
2471     IEnumSTATPROPSETSTG_fnReset,
2472     IEnumSTATPROPSETSTG_fnClone,
2473 };
2474
2475 static const IEnumSTATPROPSTGVtbl IEnumSTATPROPSTG_Vtbl =
2476 {
2477     IEnumSTATPROPSTG_fnQueryInterface,
2478     IEnumSTATPROPSTG_fnAddRef,
2479     IEnumSTATPROPSTG_fnRelease,
2480     IEnumSTATPROPSTG_fnNext,
2481     IEnumSTATPROPSTG_fnSkip,
2482     IEnumSTATPROPSTG_fnReset,
2483     IEnumSTATPROPSTG_fnClone,
2484 };
2485
2486 /***********************************************************************
2487  * Format ID <-> name conversion
2488  */
2489 static const WCHAR szSummaryInfo[] = { 5,'S','u','m','m','a','r','y',
2490  'I','n','f','o','r','m','a','t','i','o','n',0 };
2491 static const WCHAR szDocSummaryInfo[] = { 5,'D','o','c','u','m','e','n','t',
2492  'S','u','m','m','a','r','y','I','n','f','o','r','m','a','t','i','o','n',0 };
2493
2494 #define BITS_PER_BYTE    8
2495 #define CHARMASK         0x1f
2496 #define BITS_IN_CHARMASK 5
2497 #define NUM_ALPHA_CHARS  26
2498
2499 /***********************************************************************
2500  * FmtIdToPropStgName                                   [ole32.@]
2501  * Returns the storage name of the format ID rfmtid.
2502  * PARAMS
2503  *  rfmtid [I] Format ID for which to return a storage name
2504  *  str    [O] Storage name associated with rfmtid.
2505  *
2506  * RETURNS
2507  *  E_INVALIDARG if rfmtid or str i NULL, S_OK otherwise.
2508  *
2509  * NOTES
2510  * str must be at least CCH_MAX_PROPSTG_NAME characters in length.
2511  */
2512 HRESULT WINAPI FmtIdToPropStgName(const FMTID *rfmtid, LPOLESTR str)
2513 {
2514     static const char fmtMap[] = "abcdefghijklmnopqrstuvwxyz012345";
2515
2516     TRACE("%s, %p\n", debugstr_guid(rfmtid), str);
2517
2518     if (!rfmtid) return E_INVALIDARG;
2519     if (!str) return E_INVALIDARG;
2520
2521     if (IsEqualGUID(&FMTID_SummaryInformation, rfmtid))
2522         lstrcpyW(str, szSummaryInfo);
2523     else if (IsEqualGUID(&FMTID_DocSummaryInformation, rfmtid))
2524         lstrcpyW(str, szDocSummaryInfo);
2525     else if (IsEqualGUID(&FMTID_UserDefinedProperties, rfmtid))
2526         lstrcpyW(str, szDocSummaryInfo);
2527     else
2528     {
2529         const BYTE *fmtptr;
2530         WCHAR *pstr = str;
2531         ULONG bitsRemaining = BITS_PER_BYTE;
2532
2533         *pstr++ = 5;
2534         for (fmtptr = (const BYTE *)rfmtid; fmtptr < (const BYTE *)rfmtid + sizeof(FMTID); )
2535         {
2536             ULONG i = *fmtptr >> (BITS_PER_BYTE - bitsRemaining);
2537
2538             if (bitsRemaining >= BITS_IN_CHARMASK)
2539             {
2540                 *pstr = (WCHAR)(fmtMap[i & CHARMASK]);
2541                 if (bitsRemaining == BITS_PER_BYTE && *pstr >= 'a' &&
2542                  *pstr <= 'z')
2543                     *pstr += 'A' - 'a';
2544                 pstr++;
2545                 bitsRemaining -= BITS_IN_CHARMASK;
2546                 if (bitsRemaining == 0)
2547                 {
2548                     fmtptr++;
2549                     bitsRemaining = BITS_PER_BYTE;
2550                 }
2551             }
2552             else
2553             {
2554                 if (++fmtptr < (const BYTE *)rfmtid + sizeof(FMTID))
2555                     i |= *fmtptr << bitsRemaining;
2556                 *pstr++ = (WCHAR)(fmtMap[i & CHARMASK]);
2557                 bitsRemaining += BITS_PER_BYTE - BITS_IN_CHARMASK;
2558             }
2559         }
2560         *pstr = 0;
2561     }
2562     TRACE("returning %s\n", debugstr_w(str));
2563     return S_OK;
2564 }
2565
2566 /***********************************************************************
2567  * PropStgNameToFmtId                                   [ole32.@]
2568  * Returns the format ID corresponding to the given name.
2569  * PARAMS
2570  *  str    [I] Storage name to convert to a format ID.
2571  *  rfmtid [O] Format ID corresponding to str.
2572  *
2573  * RETURNS
2574  *  E_INVALIDARG if rfmtid or str is NULL or if str can't be converted to
2575  *  a format ID, S_OK otherwise.
2576  */
2577 HRESULT WINAPI PropStgNameToFmtId(const LPOLESTR str, FMTID *rfmtid)
2578 {
2579     HRESULT hr = STG_E_INVALIDNAME;
2580
2581     TRACE("%s, %p\n", debugstr_w(str), rfmtid);
2582
2583     if (!rfmtid) return E_INVALIDARG;
2584     if (!str) return STG_E_INVALIDNAME;
2585
2586     if (!lstrcmpiW(str, szDocSummaryInfo))
2587     {
2588         *rfmtid = FMTID_DocSummaryInformation;
2589         hr = S_OK;
2590     }
2591     else if (!lstrcmpiW(str, szSummaryInfo))
2592     {
2593         *rfmtid = FMTID_SummaryInformation;
2594         hr = S_OK;
2595     }
2596     else
2597     {
2598         ULONG bits;
2599         BYTE *fmtptr = (BYTE *)rfmtid - 1;
2600         const WCHAR *pstr = str;
2601
2602         memset(rfmtid, 0, sizeof(*rfmtid));
2603         for (bits = 0; bits < sizeof(FMTID) * BITS_PER_BYTE;
2604          bits += BITS_IN_CHARMASK)
2605         {
2606             ULONG bitsUsed = bits % BITS_PER_BYTE, bitsStored;
2607             WCHAR wc;
2608
2609             if (bitsUsed == 0)
2610                 fmtptr++;
2611             wc = *++pstr - 'A';
2612             if (wc > NUM_ALPHA_CHARS)
2613             {
2614                 wc += 'A' - 'a';
2615                 if (wc > NUM_ALPHA_CHARS)
2616                 {
2617                     wc += 'a' - '0' + NUM_ALPHA_CHARS;
2618                     if (wc > CHARMASK)
2619                     {
2620                         WARN("invalid character (%d)\n", *pstr);
2621                         goto end;
2622                     }
2623                 }
2624             }
2625             *fmtptr |= wc << bitsUsed;
2626             bitsStored = min(BITS_PER_BYTE - bitsUsed, BITS_IN_CHARMASK);
2627             if (bitsStored < BITS_IN_CHARMASK)
2628             {
2629                 wc >>= BITS_PER_BYTE - bitsUsed;
2630                 if (bits + bitsStored == sizeof(FMTID) * BITS_PER_BYTE)
2631                 {
2632                     if (wc != 0)
2633                     {
2634                         WARN("extra bits\n");
2635                         goto end;
2636                     }
2637                     break;
2638                 }
2639                 fmtptr++;
2640                 *fmtptr |= (BYTE)wc;
2641             }
2642         }
2643         hr = S_OK;
2644     }
2645 end:
2646     return hr;
2647 }