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/*
* Compound Storage (32 bit version)
* Storage implementation
*
* This file contains the compound file implementation
* of the storage interface.
*
* Copyright 1999 Francis Beaudet
* Copyright 1999 Sylvain St-Germain
* Copyright 1999 Thuy Nguyen
* Copyright 2005 Mike McCormack
* Copyright 2005 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* There's a decent overview of property set storage here:
* http://msdn.microsoft.com/archive/en-us/dnarolegen/html/msdn_propset.asp
* It's a little bit out of date, and more definitive references are given
* below, but it gives the best "big picture" that I've found.
*
* TODO: There's a lot missing in here. Biggies:
* - There are all sorts of restrictions I don't honor, like maximum property
* set byte size, maximum property name length
* - Certain bogus files could result in reading past the end of a buffer.
* - This will probably fail on big-endian machines, especially reading and
* writing strings.
* - Mac-generated files won't be read correctly, even if they're little
* endian, because I disregard whether the generator was a Mac. This means
* strings will probably be munged (as I don't understand Mac scripts.)
* - Not all PROPVARIANT types are supported.
* There are lots more unimplemented features, see FIXMEs below.
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define COBJMACROS
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winuser.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "dictionary.h"
#include "storage32.h"
WINE_DEFAULT_DEBUG_CHANNEL(storage);
#define _IPropertySetStorage_Offset ((int)(&(((StorageImpl*)0)->base.pssVtbl)))
#define _ICOM_THIS_From_IPropertySetStorage(class, name) \
class* This = (class*)(((char*)name)-_IPropertySetStorage_Offset)
/* These are documented in MSDN, e.g.
* http://msdn.microsoft.com/library/en-us/stg/stg/property_set_header.asp
* http://msdn.microsoft.com/library/library/en-us/stg/stg/section.asp
* but they don't seem to be in any header file.
*/
#define PROPSETHDR_BYTEORDER_MAGIC 0xfffe
#define PROPSETHDR_OSVER_KIND_WIN16 0
#define PROPSETHDR_OSVER_KIND_MAC 1
#define PROPSETHDR_OSVER_KIND_WIN32 2
#define CP_UNICODE 1200
/* The format version (and what it implies) is described here:
* http://msdn.microsoft.com/library/en-us/stg/stg/format_version.asp
*/
typedef struct tagPROPERTYSETHEADER
{
WORD wByteOrder; /* always 0xfffe */
WORD wFormat; /* can be zero or one */
DWORD dwOSVer; /* OS version of originating system */
CLSID clsid; /* application CLSID */
DWORD reserved; /* always 1 */
} PROPERTYSETHEADER;
typedef struct tagFORMATIDOFFSET
{
FMTID fmtid;
DWORD dwOffset; /* from beginning of stream */
} FORMATIDOFFSET;
typedef struct tagPROPERTYSECTIONHEADER
{
DWORD cbSection;
DWORD cProperties;
} PROPERTYSECTIONHEADER;
typedef struct tagPROPERTYIDOFFSET
{
DWORD propid;
DWORD dwOffset; /* from beginning of section */
} PROPERTYIDOFFSET;
struct tagPropertyStorage_impl;
/* Initializes the property storage from the stream (and undoes any uncommitted
* changes in the process.) Returns an error if there is an error reading or
* if the stream format doesn't match what's expected.
*/
static HRESULT PropertyStorage_ReadFromStream(struct tagPropertyStorage_impl *);
static HRESULT PropertyStorage_WriteToStream(struct tagPropertyStorage_impl *);
/* Creates the dictionaries used by the property storage. If successful, all
* the dictionaries have been created. If failed, none has been. (This makes
* it a bit easier to deal with destroying them.)
*/
static HRESULT PropertyStorage_CreateDictionaries(
struct tagPropertyStorage_impl *);
static void PropertyStorage_DestroyDictionaries(
struct tagPropertyStorage_impl *);
/* Copies from propvar to prop. If propvar's type is VT_LPSTR, copies the
* string using PropertyStorage_StringCopy.
*/
static HRESULT PropertyStorage_PropVariantCopy(PROPVARIANT *prop,
const PROPVARIANT *propvar, LCID targetCP, LCID srcCP);
/* Copies the string src, which is encoded using code page srcCP, and returns
* it in *dst, in the code page specified by targetCP. The returned string is
* allocated using CoTaskMemAlloc.
* If srcCP is CP_UNICODE, src is in fact an LPCWSTR. Similarly, if targetCP
* is CP_UNICODE, the returned string is in fact an LPWSTR.
* Returns S_OK on success, something else on failure.
*/
static HRESULT PropertyStorage_StringCopy(LPCSTR src, LPSTR *dst, LCID targetCP,
LCID srcCP);
static IPropertyStorageVtbl IPropertyStorage_Vtbl;
/***********************************************************************
* Implementation of IPropertyStorage
*/
typedef struct tagPropertyStorage_impl
{
IPropertyStorageVtbl *vtbl;
DWORD ref;
CRITICAL_SECTION cs;
IStream *stm;
BOOL dirty;
FMTID fmtid;
CLSID clsid;
DWORD originatorOS;
DWORD grfFlags;
DWORD grfMode;
UINT codePage;
LCID locale;
PROPID highestProp;
struct dictionary *name_to_propid;
struct dictionary *propid_to_name;
struct dictionary *propid_to_prop;
} PropertyStorage_impl;
/************************************************************************
* IPropertyStorage_fnQueryInterface (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnQueryInterface(
IPropertyStorage *iface,
REFIID riid,
void** ppvObject)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
if ( (This==0) || (ppvObject==0) )
return E_INVALIDARG;
*ppvObject = 0;
if (IsEqualGUID(&IID_IUnknown, riid) ||
IsEqualGUID(&IID_IPropertyStorage, riid))
{
IPropertyStorage_AddRef(iface);
*ppvObject = (IPropertyStorage*)iface;
return S_OK;
}
return E_NOINTERFACE;
}
/************************************************************************
* IPropertyStorage_fnAddRef (IPropertyStorage)
*/
static ULONG WINAPI IPropertyStorage_fnAddRef(
IPropertyStorage *iface)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
return InterlockedIncrement(&This->ref);
}
/************************************************************************
* IPropertyStorage_fnRelease (IPropertyStorage)
*/
static ULONG WINAPI IPropertyStorage_fnRelease(
IPropertyStorage *iface)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
ULONG ref;
ref = InterlockedDecrement(&This->ref);
if (ref == 0)
{
TRACE("Destroying %p\n", This);
if (This->dirty)
IPropertyStorage_Commit(iface, STGC_DEFAULT);
IStream_Release(This->stm);
DeleteCriticalSection(&This->cs);
PropertyStorage_DestroyDictionaries(This);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static PROPVARIANT *PropertyStorage_FindProperty(PropertyStorage_impl *This,
DWORD propid)
{
PROPVARIANT *ret = NULL;
assert(This);
dictionary_find(This->propid_to_prop, (void *)propid, (void **)&ret);
TRACE("returning %p\n", ret);
return ret;
}
/* Returns NULL if name is NULL. */
static PROPVARIANT *PropertyStorage_FindPropertyByName(
PropertyStorage_impl *This, LPCWSTR name)
{
PROPVARIANT *ret = NULL;
PROPID propid;
assert(This);
if (!name)
return NULL;
if (dictionary_find(This->name_to_propid, name, (void **)&propid))
ret = PropertyStorage_FindProperty(This, (PROPID)propid);
TRACE("returning %p\n", ret);
return ret;
}
static LPWSTR PropertyStorage_FindPropertyNameById(PropertyStorage_impl *This,
DWORD propid)
{
LPWSTR ret = NULL;
assert(This);
dictionary_find(This->propid_to_name, (void *)propid, (void **)&ret);
TRACE("returning %p\n", ret);
return ret;
}
/************************************************************************
* IPropertyStorage_fnReadMultiple (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnReadMultiple(
IPropertyStorage* iface,
ULONG cpspec,
const PROPSPEC rgpspec[],
PROPVARIANT rgpropvar[])
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
HRESULT hr = S_FALSE;
ULONG i;
TRACE("(%p, %ld, %p, %p)\n", iface, cpspec, rgpspec, rgpropvar);
if (!This)
return E_INVALIDARG;
if (cpspec && (!rgpspec || !rgpropvar))
return E_INVALIDARG;
EnterCriticalSection(&This->cs);
for (i = 0; i < cpspec; i++)
{
PropVariantInit(&rgpropvar[i]);
if (rgpspec[i].ulKind == PRSPEC_LPWSTR)
{
PROPVARIANT *prop = PropertyStorage_FindPropertyByName(This,
rgpspec[i].u.lpwstr);
if (prop)
PropertyStorage_PropVariantCopy(&rgpropvar[i], prop, GetACP(),
This->codePage);
}
else
{
switch (rgpspec[i].u.propid)
{
case PID_CODEPAGE:
rgpropvar[i].vt = VT_I2;
rgpropvar[i].u.iVal = This->codePage;
break;
case PID_LOCALE:
rgpropvar[i].vt = VT_I4;
rgpropvar[i].u.lVal = This->locale;
break;
default:
{
PROPVARIANT *prop = PropertyStorage_FindProperty(This,
rgpspec[i].u.propid);
if (prop)
PropertyStorage_PropVariantCopy(&rgpropvar[i], prop,
GetACP(), This->codePage);
}
}
}
}
LeaveCriticalSection(&This->cs);
return hr;
}
static HRESULT PropertyStorage_StringCopy(LPCSTR src, LPSTR *dst, LCID targetCP,
LCID srcCP)
{
HRESULT hr = S_OK;
int len;
TRACE("%s, %p, %ld, %ld\n",
srcCP == CP_UNICODE ? debugstr_w((LPCWSTR)src) : debugstr_a(src), dst,
targetCP, srcCP);
assert(src);
assert(dst);
*dst = NULL;
if (targetCP == srcCP)
{
size_t len;
if (targetCP == CP_UNICODE)
len = (strlenW((LPCWSTR)src) + 1) * sizeof(WCHAR);
else
len = strlen(src) + 1;
*dst = CoTaskMemAlloc(len * sizeof(WCHAR));
if (!*dst)
hr = STG_E_INSUFFICIENTMEMORY;
else
memcpy(*dst, src, len);
}
else
{
if (targetCP == CP_UNICODE)
{
len = MultiByteToWideChar(srcCP, 0, src, -1, NULL, 0);
*dst = CoTaskMemAlloc(len * sizeof(WCHAR));
if (!*dst)
hr = STG_E_INSUFFICIENTMEMORY;
else
MultiByteToWideChar(srcCP, 0, src, -1, (LPWSTR)*dst, len);
}
else
{
LPWSTR wideStr;
if (srcCP == CP_UNICODE)
wideStr = (LPWSTR)src;
else
{
len = MultiByteToWideChar(srcCP, 0, src, -1, NULL, 0);
wideStr = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (wideStr)
MultiByteToWideChar(srcCP, 0, src, -1, wideStr, len);
else
hr = STG_E_INSUFFICIENTMEMORY;
}
if (SUCCEEDED(hr))
{
len = WideCharToMultiByte(targetCP, 0, wideStr, -1, NULL, 0,
NULL, NULL);
*dst = CoTaskMemAlloc(len);
if (!*dst)
hr = STG_E_INSUFFICIENTMEMORY;
else
{
BOOL defCharUsed = FALSE;
if (WideCharToMultiByte(targetCP, 0, wideStr, -1, *dst,
len, NULL, &defCharUsed) == 0 || defCharUsed)
{
CoTaskMemFree(*dst);
*dst = NULL;
hr = HRESULT_FROM_WIN32(ERROR_NO_UNICODE_TRANSLATION);
}
}
}
if (wideStr != (LPWSTR)src)
HeapFree(GetProcessHeap(), 0, wideStr);
}
}
TRACE("returning 0x%08lx (%s)\n", hr,
targetCP == CP_UNICODE ? debugstr_w((LPCWSTR)*dst) : debugstr_a(*dst));
return hr;
}
static HRESULT PropertyStorage_PropVariantCopy(PROPVARIANT *prop,
const PROPVARIANT *propvar, LCID targetCP, LCID srcCP)
{
HRESULT hr = S_OK;
assert(prop);
assert(propvar);
if (propvar->vt == VT_LPSTR)
{
hr = PropertyStorage_StringCopy(propvar->u.pszVal, &prop->u.pszVal,
targetCP, srcCP);
if (SUCCEEDED(hr))
prop->vt = VT_LPSTR;
}
else
PropVariantCopy(prop, propvar);
return hr;
}
/* Stores the property with id propid and value propvar into this property
* storage. lcid is ignored if propvar's type is not VT_LPSTR. If propvar's
* type is VT_LPSTR, converts the string using lcid as the source code page
* and This->codePage as the target code page before storing.
*/
static HRESULT PropertyStorage_StorePropWithId(PropertyStorage_impl *This,
PROPID propid, const PROPVARIANT *propvar, LCID lcid)
{
HRESULT hr = S_OK;
PROPVARIANT *prop = PropertyStorage_FindProperty(This, propid);
assert(This);
assert(propvar);
TRACE("Setting 0x%08lx to type %d\n", propid, propvar->vt);
if (prop)
{
PropVariantClear(prop);
hr = PropertyStorage_PropVariantCopy(prop, propvar, This->codePage,
lcid);
}
else
{
prop = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
sizeof(PROPVARIANT));
if (prop)
{
hr = PropertyStorage_PropVariantCopy(prop, propvar, This->codePage,
lcid);
if (SUCCEEDED(hr))
{
dictionary_insert(This->propid_to_prop, (void *)propid, prop);
if (propid > This->highestProp)
This->highestProp = propid;
}
else
HeapFree(GetProcessHeap(), 0, prop);
}
else
hr = STG_E_INSUFFICIENTMEMORY;
}
return hr;
}
/************************************************************************
* IPropertyStorage_fnWriteMultiple (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnWriteMultiple(
IPropertyStorage* iface,
ULONG cpspec,
const PROPSPEC rgpspec[],
const PROPVARIANT rgpropvar[],
PROPID propidNameFirst)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
HRESULT hr = S_OK;
ULONG i;
TRACE("(%p, %ld, %p, %p)\n", iface, cpspec, rgpspec, rgpropvar);
if (!This)
return E_INVALIDARG;
if (cpspec && (!rgpspec || !rgpropvar))
return E_INVALIDARG;
if (!(This->grfMode & STGM_READWRITE))
return STG_E_ACCESSDENIED;
EnterCriticalSection(&This->cs);
This->dirty = TRUE;
This->originatorOS = (DWORD)MAKELONG(LOWORD(GetVersion()),
PROPSETHDR_OSVER_KIND_WIN32) ;
for (i = 0; i < cpspec; i++)
{
if (rgpspec[i].ulKind == PRSPEC_LPWSTR)
{
PROPVARIANT *prop = PropertyStorage_FindPropertyByName(This,
rgpspec[i].u.lpwstr);
if (prop)
PropVariantCopy(prop, &rgpropvar[i]);
else
{
/* Note that I don't do the special cases here that I do below,
* because naming the special PIDs isn't supported.
*/
if (propidNameFirst < PID_FIRST_USABLE ||
propidNameFirst >= PID_MIN_READONLY)
hr = STG_E_INVALIDPARAMETER;
else
{
PROPID nextId = max(propidNameFirst, This->highestProp + 1);
size_t len = strlenW(rgpspec[i].u.lpwstr) + 1;
LPWSTR name = HeapAlloc(GetProcessHeap(), 0,
len * sizeof(WCHAR));
if (name)
{
strcpyW(name, rgpspec[i].u.lpwstr);
TRACE("Adding prop name %s, propid %ld\n",
debugstr_w(name), nextId);
dictionary_insert(This->name_to_propid, name,
(void *)nextId);
dictionary_insert(This->propid_to_name, (void *)nextId,
name);
hr = PropertyStorage_StorePropWithId(This, nextId,
&rgpropvar[i], GetACP());
}
else
hr = STG_E_INSUFFICIENTMEMORY;
}
}
}
else
{
switch (rgpspec[i].u.propid)
{
case PID_DICTIONARY:
/* Can't set the dictionary */
hr = STG_E_INVALIDPARAMETER;
break;
case PID_CODEPAGE:
/* Can only set the code page if nothing else has been set */
if (dictionary_num_entries(This->propid_to_prop) == 0 &&
rgpropvar[i].vt == VT_I2)
This->codePage = rgpropvar[i].u.iVal;
else
hr = STG_E_INVALIDPARAMETER;
break;
case PID_LOCALE:
/* Can only set the locale if nothing else has been set */
if (dictionary_num_entries(This->propid_to_prop) == 0 &&
rgpropvar[i].vt == VT_I4)
This->locale = rgpropvar[i].u.lVal;
else
hr = STG_E_INVALIDPARAMETER;
break;
case PID_ILLEGAL:
/* silently ignore like MSDN says */
break;
default:
if (rgpspec[i].u.propid >= PID_MIN_READONLY)
hr = STG_E_INVALIDPARAMETER;
else
hr = PropertyStorage_StorePropWithId(This,
rgpspec[i].u.propid, &rgpropvar[i], GetACP());
}
}
}
if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
IPropertyStorage_Commit(iface, STGC_DEFAULT);
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnDeleteMultiple (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnDeleteMultiple(
IPropertyStorage* iface,
ULONG cpspec,
const PROPSPEC rgpspec[])
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
ULONG i;
HRESULT hr;
TRACE("(%p, %ld, %p)\n", iface, cpspec, rgpspec);
if (!This)
return E_INVALIDARG;
if (cpspec && !rgpspec)
return E_INVALIDARG;
if (!(This->grfMode & STGM_READWRITE))
return STG_E_ACCESSDENIED;
hr = S_OK;
EnterCriticalSection(&This->cs);
This->dirty = TRUE;
for (i = 0; i < cpspec; i++)
{
if (rgpspec[i].ulKind == PRSPEC_LPWSTR)
{
PROPID propid;
if (dictionary_find(This->name_to_propid,
(void *)rgpspec[i].u.lpwstr, (void **)&propid))
dictionary_remove(This->propid_to_prop, (void *)propid);
}
else
{
if (rgpspec[i].u.propid >= PID_FIRST_USABLE &&
rgpspec[i].u.propid < PID_MIN_READONLY)
dictionary_remove(This->propid_to_prop,
(void *)rgpspec[i].u.propid);
else
hr = STG_E_INVALIDPARAMETER;
}
}
if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
IPropertyStorage_Commit(iface, STGC_DEFAULT);
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnReadPropertyNames (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnReadPropertyNames(
IPropertyStorage* iface,
ULONG cpropid,
const PROPID rgpropid[],
LPOLESTR rglpwstrName[])
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
ULONG i;
HRESULT hr = S_FALSE;
TRACE("(%p, %ld, %p, %p)\n", iface, cpropid, rgpropid, rglpwstrName);
if (!This)
return E_INVALIDARG;
if (cpropid && (!rgpropid || !rglpwstrName))
return E_INVALIDARG;
EnterCriticalSection(&This->cs);
for (i = 0; i < cpropid && SUCCEEDED(hr); i++)
{
LPWSTR name = PropertyStorage_FindPropertyNameById(This, rgpropid[i]);
if (name)
{
size_t len = lstrlenW(name);
hr = S_OK;
rglpwstrName[i] = CoTaskMemAlloc((len + 1) * sizeof(WCHAR));
if (rglpwstrName)
memcpy(rglpwstrName, name, (len + 1) * sizeof(WCHAR));
else
hr = STG_E_INSUFFICIENTMEMORY;
}
else
rglpwstrName[i] = NULL;
}
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnWritePropertyNames (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnWritePropertyNames(
IPropertyStorage* iface,
ULONG cpropid,
const PROPID rgpropid[],
const LPOLESTR rglpwstrName[])
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
ULONG i;
HRESULT hr;
TRACE("(%p, %ld, %p, %p)\n", iface, cpropid, rgpropid, rglpwstrName);
if (!This)
return E_INVALIDARG;
if (cpropid && (!rgpropid || !rglpwstrName))
return E_INVALIDARG;
if (!(This->grfMode & STGM_READWRITE))
return STG_E_ACCESSDENIED;
hr = S_OK;
EnterCriticalSection(&This->cs);
This->dirty = TRUE;
for (i = 0; SUCCEEDED(hr) && i < cpropid; i++)
{
if (rgpropid[i] != PID_ILLEGAL)
{
size_t len = lstrlenW(rglpwstrName[i]) + 1;
LPWSTR name = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (name)
{
strcpyW(name, rglpwstrName[i]);
dictionary_insert(This->name_to_propid, name,
(void *)rgpropid[i]);
dictionary_insert(This->propid_to_name, (void *)rgpropid[i],
name);
}
else
hr = STG_E_INSUFFICIENTMEMORY;
}
}
if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
IPropertyStorage_Commit(iface, STGC_DEFAULT);
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnDeletePropertyNames (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnDeletePropertyNames(
IPropertyStorage* iface,
ULONG cpropid,
const PROPID rgpropid[])
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
ULONG i;
HRESULT hr;
TRACE("(%p, %ld, %p)\n", iface, cpropid, rgpropid);
if (!This)
return E_INVALIDARG;
if (cpropid && !rgpropid)
return E_INVALIDARG;
if (!(This->grfMode & STGM_READWRITE))
return STG_E_ACCESSDENIED;
hr = S_OK;
EnterCriticalSection(&This->cs);
This->dirty = TRUE;
for (i = 0; i < cpropid; i++)
{
LPWSTR name = NULL;
if (dictionary_find(This->propid_to_name, (void *)rgpropid[i],
(void **)&name))
{
dictionary_remove(This->propid_to_name, (void *)rgpropid[i]);
dictionary_remove(This->name_to_propid, name);
}
}
if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
IPropertyStorage_Commit(iface, STGC_DEFAULT);
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnCommit (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnCommit(
IPropertyStorage* iface,
DWORD grfCommitFlags)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
HRESULT hr;
TRACE("(%p, 0x%08lx)\n", iface, grfCommitFlags);
if (!This)
return E_INVALIDARG;
if (!(This->grfMode & STGM_READWRITE))
return STG_E_ACCESSDENIED;
EnterCriticalSection(&This->cs);
if (This->dirty)
hr = PropertyStorage_WriteToStream(This);
else
hr = S_OK;
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnRevert (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnRevert(
IPropertyStorage* iface)
{
HRESULT hr;
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
TRACE("%p\n", iface);
if (!This)
return E_INVALIDARG;
EnterCriticalSection(&This->cs);
if (This->dirty)
{
PropertyStorage_DestroyDictionaries(This);
hr = PropertyStorage_CreateDictionaries(This);
if (SUCCEEDED(hr))
hr = PropertyStorage_ReadFromStream(This);
}
else
hr = S_OK;
LeaveCriticalSection(&This->cs);
return hr;
}
/************************************************************************
* IPropertyStorage_fnEnum (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnEnum(
IPropertyStorage* iface,
IEnumSTATPROPSTG** ppenum)
{
FIXME("\n");
return E_NOTIMPL;
}
/************************************************************************
* IPropertyStorage_fnSetTimes (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnSetTimes(
IPropertyStorage* iface,
const FILETIME* pctime,
const FILETIME* patime,
const FILETIME* pmtime)
{
FIXME("\n");
return E_NOTIMPL;
}
/************************************************************************
* IPropertyStorage_fnSetClass (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnSetClass(
IPropertyStorage* iface,
REFCLSID clsid)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
TRACE("%p, %s\n", iface, debugstr_guid(clsid));
if (!This || !clsid)
return E_INVALIDARG;
if (!(This->grfMode & STGM_READWRITE))
return STG_E_ACCESSDENIED;
memcpy(&This->clsid, clsid, sizeof(This->clsid));
This->dirty = TRUE;
if (This->grfFlags & PROPSETFLAG_UNBUFFERED)
IPropertyStorage_Commit(iface, STGC_DEFAULT);
return S_OK;
}
/************************************************************************
* IPropertyStorage_fnStat (IPropertyStorage)
*/
static HRESULT WINAPI IPropertyStorage_fnStat(
IPropertyStorage* iface,
STATPROPSETSTG* statpsstg)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)iface;
STATSTG stat;
HRESULT hr;
TRACE("%p, %p\n", iface, statpsstg);
if (!This || !statpsstg)
return E_INVALIDARG;
hr = IStream_Stat(This->stm, &stat, STATFLAG_NONAME);
if (SUCCEEDED(hr))
{
memcpy(&statpsstg->fmtid, &This->fmtid, sizeof(statpsstg->fmtid));
memcpy(&statpsstg->clsid, &This->clsid, sizeof(statpsstg->clsid));
statpsstg->grfFlags = This->grfFlags;
memcpy(&statpsstg->mtime, &stat.mtime, sizeof(statpsstg->mtime));
memcpy(&statpsstg->ctime, &stat.ctime, sizeof(statpsstg->ctime));
memcpy(&statpsstg->atime, &stat.atime, sizeof(statpsstg->atime));
statpsstg->dwOSVersion = This->originatorOS;
}
return hr;
}
static int PropertyStorage_PropNameCompare(const void *a, const void *b,
void *extra)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)extra;
TRACE("(%s, %s)\n", debugstr_w(a), debugstr_w(b));
/* FIXME: this assumes property names are always Unicode, but they
* might be ANSI, depending on whether This->grfFlags & PROPSETFLAG_ANSI
* is true.
*/
if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
return strcmpW((LPCWSTR)a, (LPCWSTR)b);
else
return strcmpiW((LPCWSTR)a, (LPCWSTR)b);
}
static void PropertyStorage_PropNameDestroy(void *k, void *d, void *extra)
{
HeapFree(GetProcessHeap(), 0, k);
}
static int PropertyStorage_PropCompare(const void *a, const void *b,
void *extra)
{
TRACE("(%ld, %ld)\n", (PROPID)a, (PROPID)b);
return (PROPID)a - (PROPID)b;
}
static void PropertyStorage_PropertyDestroy(void *k, void *d, void *extra)
{
PropVariantClear((PROPVARIANT *)d);
HeapFree(GetProcessHeap(), 0, d);
}
/* Reads the dictionary from the memory buffer beginning at ptr. Interprets
* the entries according to the values of This->codePage and This->locale.
* FIXME: there isn't any checking whether the read property extends past the
* end of the buffer.
* FIXME: this always stores dictionary entries as Unicode, but it should store
* them as ANSI if (This->grfFlags & PROPSETFLAG_ANSI) is true.
*/
static HRESULT PropertyStorage_ReadDictionary(PropertyStorage_impl *This,
BYTE *ptr)
{
DWORD numEntries, i;
HRESULT hr = S_OK;
assert(This);
assert(This->name_to_propid);
assert(This->propid_to_name);
StorageUtl_ReadDWord(ptr, 0, &numEntries);
TRACE("Reading %ld entries:\n", numEntries);
ptr += sizeof(DWORD);
for (i = 0; SUCCEEDED(hr) && i < numEntries; i++)
{
PROPID propid;
DWORD cbEntry;
LPWSTR name = NULL;
StorageUtl_ReadDWord(ptr, 0, &propid);
ptr += sizeof(PROPID);
StorageUtl_ReadDWord(ptr, 0, &cbEntry);
ptr += sizeof(DWORD);
/* FIXME: if host is big-endian, this'll suck to convert */
TRACE("Reading entry with ID 0x%08lx, %ld bytes\n", propid, cbEntry);
if (This->codePage != CP_UNICODE)
{
int len = MultiByteToWideChar(This->codePage, 0, ptr, cbEntry,
NULL, 0);
if (!len)
hr = HRESULT_FROM_WIN32(GetLastError());
else
{
name = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
if (name)
MultiByteToWideChar(This->codePage, 0, ptr, cbEntry, name,
len);
else
hr = STG_E_INSUFFICIENTMEMORY;
}
}
else
{
name = HeapAlloc(GetProcessHeap(), 0, cbEntry);
if (name)
lstrcpyW(name, (LPWSTR)ptr);
else
hr = STG_E_INSUFFICIENTMEMORY;
/* Unicode entries are padded to DWORD boundaries */
if (cbEntry % sizeof(DWORD))
ptr += sizeof(DWORD) - (cbEntry % sizeof(DWORD));
}
if (name)
{
dictionary_insert(This->name_to_propid, name, (void *)propid);
dictionary_insert(This->propid_to_name, (void *)propid, name);
TRACE("Property %s maps to id %ld\n", debugstr_w(name), propid);
}
ptr += sizeof(DWORD) + cbEntry;
}
return hr;
}
/* FIXME: there isn't any checking whether the read property extends past the
* end of the buffer.
*/
static HRESULT PropertyStorage_ReadProperty(PROPVARIANT *prop, const BYTE *data)
{
HRESULT hr = S_OK;
assert(prop);
assert(data);
StorageUtl_ReadDWord(data, 0, (DWORD *)&prop->vt);
data += sizeof(DWORD);
switch (prop->vt)
{
case VT_EMPTY:
case VT_NULL:
break;
case VT_I1:
prop->u.cVal = *(const char *)data;
TRACE("Read char 0x%x ('%c')\n", prop->u.cVal, prop->u.cVal);
break;
case VT_UI1:
prop->u.bVal = *(const UCHAR *)data;
TRACE("Read byte 0x%x\n", prop->u.bVal);
break;
case VT_I2:
StorageUtl_ReadWord(data, 0, &prop->u.iVal);
TRACE("Read short %d\n", prop->u.iVal);
break;
case VT_UI2:
StorageUtl_ReadWord(data, 0, &prop->u.uiVal);
TRACE("Read ushort %d\n", prop->u.uiVal);
break;
case VT_I4:
StorageUtl_ReadDWord(data, 0, &prop->u.lVal);
TRACE("Read long %ld\n", prop->u.lVal);
break;
case VT_UI4:
StorageUtl_ReadDWord(data, 0, &prop->u.ulVal);
TRACE("Read ulong %ld\n", prop->u.ulVal);
break;
case VT_LPSTR:
{
DWORD count;
StorageUtl_ReadDWord(data, 0, &count);
prop->u.pszVal = CoTaskMemAlloc(count);
if (prop->u.pszVal)
{
/* FIXME: if the host is big-endian, this'll suck */
memcpy(prop->u.pszVal, data + sizeof(DWORD), count);
/* This is stored in the code page specified in This->codePage.
* Don't convert it, the caller will just store it as-is.
* (Note the trace will be misleading if the code page is Unicode.)
*/
TRACE("Read string value %s\n", debugstr_a(prop->u.pszVal));
}
else
hr = STG_E_INSUFFICIENTMEMORY;
break;
}
case VT_LPWSTR:
{
DWORD count;
StorageUtl_ReadDWord(data, 0, &count);
prop->u.pwszVal = CoTaskMemAlloc(count * sizeof(WCHAR));
if (prop->u.pwszVal)
{
/* FIXME: if the host is big-endian, gotta swap every char */
memcpy(prop->u.pwszVal, data + sizeof(DWORD),
count * sizeof(WCHAR));
TRACE("Read string value %s\n", debugstr_w(prop->u.pwszVal));
}
else
hr = STG_E_INSUFFICIENTMEMORY;
break;
}
case VT_FILETIME:
/* FIXME: endianness */
memcpy(&prop->u.filetime, data, sizeof(FILETIME));
break;
default:
FIXME("unsupported type %d\n", prop->vt);
hr = STG_E_INVALIDPARAMETER;
}
return hr;
}
static HRESULT PropertyStorage_ReadHeaderFromStream(IStream *stm,
PROPERTYSETHEADER *hdr)
{
BYTE buf[sizeof(PROPERTYSETHEADER)];
ULONG count = 0;
HRESULT hr;
assert(stm);
assert(hdr);
hr = IStream_Read(stm, buf, sizeof(buf), &count);
if (SUCCEEDED(hr))
{
if (count != sizeof(buf))
{
WARN("read %ld, expected %d\n", count, sizeof(buf));
hr = STG_E_INVALIDHEADER;
}
else
{
StorageUtl_ReadWord(buf, offsetof(PROPERTYSETHEADER, wByteOrder),
&hdr->wByteOrder);
StorageUtl_ReadWord(buf, offsetof(PROPERTYSETHEADER, wFormat),
&hdr->wFormat);
StorageUtl_ReadDWord(buf, offsetof(PROPERTYSETHEADER, dwOSVer),
&hdr->dwOSVer);
StorageUtl_ReadGUID(buf, offsetof(PROPERTYSETHEADER, clsid),
&hdr->clsid);
StorageUtl_ReadDWord(buf, offsetof(PROPERTYSETHEADER, reserved),
&hdr->reserved);
}
}
TRACE("returning 0x%08lx\n", hr);
return hr;
}
static HRESULT PropertyStorage_ReadFmtIdOffsetFromStream(IStream *stm,
FORMATIDOFFSET *fmt)
{
BYTE buf[sizeof(FORMATIDOFFSET)];
ULONG count = 0;
HRESULT hr;
assert(stm);
assert(fmt);
hr = IStream_Read(stm, buf, sizeof(buf), &count);
if (SUCCEEDED(hr))
{
if (count != sizeof(buf))
{
WARN("read %ld, expected %d\n", count, sizeof(buf));
hr = STG_E_INVALIDHEADER;
}
else
{
StorageUtl_ReadGUID(buf, offsetof(FORMATIDOFFSET, fmtid),
&fmt->fmtid);
StorageUtl_ReadDWord(buf, offsetof(FORMATIDOFFSET, dwOffset),
&fmt->dwOffset);
}
}
TRACE("returning 0x%08lx\n", hr);
return hr;
}
static HRESULT PropertyStorage_ReadSectionHeaderFromStream(IStream *stm,
PROPERTYSECTIONHEADER *hdr)
{
BYTE buf[sizeof(PROPERTYSECTIONHEADER)];
ULONG count = 0;
HRESULT hr;
assert(stm);
assert(hdr);
hr = IStream_Read(stm, buf, sizeof(buf), &count);
if (SUCCEEDED(hr))
{
if (count != sizeof(buf))
{
WARN("read %ld, expected %d\n", count, sizeof(buf));
hr = STG_E_INVALIDHEADER;
}
else
{
StorageUtl_ReadDWord(buf, offsetof(PROPERTYSECTIONHEADER,
cbSection), &hdr->cbSection);
StorageUtl_ReadDWord(buf, offsetof(PROPERTYSECTIONHEADER,
cProperties), &hdr->cProperties);
}
}
TRACE("returning 0x%08lx\n", hr);
return hr;
}
static HRESULT PropertyStorage_ReadFromStream(PropertyStorage_impl *This)
{
PROPERTYSETHEADER hdr;
FORMATIDOFFSET fmtOffset;
PROPERTYSECTIONHEADER sectionHdr;
LARGE_INTEGER seek;
ULONG i;
STATSTG stat;
HRESULT hr;
BYTE *buf = NULL;
ULONG count = 0;
DWORD dictOffset = 0;
assert(This);
This->dirty = FALSE;
This->highestProp = 0;
hr = IStream_Stat(This->stm, &stat, STATFLAG_NONAME);
if (FAILED(hr))
goto end;
if (stat.cbSize.u.HighPart)
{
WARN("stream too big\n");
/* maximum size varies, but it can't be this big */
hr = STG_E_INVALIDHEADER;
goto end;
}
if (stat.cbSize.u.LowPart == 0)
{
/* empty stream is okay */
hr = S_OK;
goto end;
}
else if (stat.cbSize.u.LowPart < sizeof(PROPERTYSETHEADER) +
sizeof(FORMATIDOFFSET))
{
WARN("stream too small\n");
hr = STG_E_INVALIDHEADER;
goto end;
}
seek.QuadPart = 0;
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
hr = PropertyStorage_ReadHeaderFromStream(This->stm, &hdr);
/* I've only seen reserved == 1, but the article says I shouldn't disallow
* higher values.
*/
if (hdr.wByteOrder != PROPSETHDR_BYTEORDER_MAGIC || hdr.reserved < 1)
{
WARN("bad magic in prop set header\n");
hr = STG_E_INVALIDHEADER;
goto end;
}
if (hdr.wFormat != 0 && hdr.wFormat != 1)
{
WARN("bad format version %d\n", hdr.wFormat);
hr = STG_E_INVALIDHEADER;
goto end;
}
memcpy(&This->clsid, &hdr.clsid, sizeof(This->clsid));
This->originatorOS = hdr.dwOSVer;
if (PROPSETHDR_OSVER_KIND(hdr.dwOSVer) == PROPSETHDR_OSVER_KIND_MAC)
WARN("File comes from a Mac, strings will probably be screwed up\n");
hr = PropertyStorage_ReadFmtIdOffsetFromStream(This->stm, &fmtOffset);
if (FAILED(hr))
goto end;
if (fmtOffset.dwOffset > stat.cbSize.u.LowPart)
{
WARN("invalid offset %ld (stream length is %ld)\n", fmtOffset.dwOffset,
stat.cbSize.u.LowPart);
hr = STG_E_INVALIDHEADER;
goto end;
}
/* wackiness alert: if the format ID is FMTID_DocSummaryInformation, there
* follow not one, but two sections. The first is the standard properties
* for the document summary information, and the second is user-defined
* properties. This is the only case in which multiple sections are
* allowed.
* Reading the second stream isn't implemented yet.
*/
hr = PropertyStorage_ReadSectionHeaderFromStream(This->stm, &sectionHdr);
if (FAILED(hr))
goto end;
/* The section size includes the section header, so check it */
if (sectionHdr.cbSection < sizeof(PROPERTYSECTIONHEADER))
{
WARN("section header too small, got %ld, expected at least %d\n",
sectionHdr.cbSection, sizeof(PROPERTYSECTIONHEADER));
hr = STG_E_INVALIDHEADER;
goto end;
}
buf = HeapAlloc(GetProcessHeap(), 0, sectionHdr.cbSection -
sizeof(PROPERTYSECTIONHEADER));
if (!buf)
{
hr = STG_E_INSUFFICIENTMEMORY;
goto end;
}
hr = IStream_Read(This->stm, buf, sectionHdr.cbSection -
sizeof(PROPERTYSECTIONHEADER), &count);
if (FAILED(hr))
goto end;
TRACE("Reading %ld properties:\n", sectionHdr.cProperties);
for (i = 0; SUCCEEDED(hr) && i < sectionHdr.cProperties; i++)
{
PROPERTYIDOFFSET *idOffset = (PROPERTYIDOFFSET *)(buf +
i * sizeof(PROPERTYIDOFFSET));
if (idOffset->dwOffset < sizeof(PROPERTYSECTIONHEADER) ||
idOffset->dwOffset >= sectionHdr.cbSection - sizeof(DWORD))
hr = STG_E_INVALIDPOINTER;
else
{
if (idOffset->propid >= PID_FIRST_USABLE &&
idOffset->propid < PID_MIN_READONLY && idOffset->propid >
This->highestProp)
This->highestProp = idOffset->propid;
if (idOffset->propid == PID_DICTIONARY)
{
/* Don't read the dictionary yet, its entries depend on the
* code page. Just store the offset so we know to read it
* later.
*/
dictOffset = idOffset->dwOffset;
TRACE("Dictionary offset is %ld\n", dictOffset);
}
else
{
PROPVARIANT prop;
if (SUCCEEDED(PropertyStorage_ReadProperty(&prop,
buf + idOffset->dwOffset - sizeof(PROPERTYSECTIONHEADER))))
{
TRACE("Read property with ID 0x%08lx, type %d\n",
idOffset->propid, prop.vt);
switch(idOffset->propid)
{
case PID_CODEPAGE:
if (prop.vt == VT_I2)
This->codePage = (UINT)prop.u.iVal;
break;
case PID_LOCALE:
if (prop.vt == VT_I4)
This->locale = (LCID)prop.u.lVal;
break;
case PID_BEHAVIOR:
if (prop.vt == VT_I4 && prop.u.lVal)
This->grfFlags |= PROPSETFLAG_CASE_SENSITIVE;
break;
default:
hr = PropertyStorage_StorePropWithId(This,
idOffset->propid, &prop, This->codePage);
}
}
}
}
}
if (!This->codePage)
{
/* default to Unicode unless told not to, as specified here:
* http://msdn.microsoft.com/library/en-us/stg/stg/names_in_istorage.asp
*/
if (This->grfFlags & PROPSETFLAG_ANSI)
This->codePage = GetACP();
else
This->codePage = CP_UNICODE;
}
if (!This->locale)
This->locale = LOCALE_SYSTEM_DEFAULT;
TRACE("Code page is %d, locale is %ld\n", This->codePage, This->locale);
if (dictOffset)
hr = PropertyStorage_ReadDictionary(This,
buf + dictOffset - sizeof(PROPERTYSECTIONHEADER));
end:
HeapFree(GetProcessHeap(), 0, buf);
if (FAILED(hr))
{
dictionary_destroy(This->name_to_propid);
This->name_to_propid = NULL;
dictionary_destroy(This->propid_to_name);
This->propid_to_name = NULL;
dictionary_destroy(This->propid_to_prop);
This->propid_to_prop = NULL;
}
return hr;
}
static void PropertyStorage_MakeHeader(PropertyStorage_impl *This,
PROPERTYSETHEADER *hdr)
{
assert(This);
assert(hdr);
StorageUtl_WriteWord((BYTE *)&hdr->wByteOrder, 0,
PROPSETHDR_BYTEORDER_MAGIC);
/* FIXME: should be able to write format 0 property sets too, depending
* on whether I have too long string names or if case-sensitivity is set.
* For now always write format 1.
*/
StorageUtl_WriteWord((BYTE *)&hdr->wFormat, 0, 1);
StorageUtl_WriteDWord((BYTE *)&hdr->dwOSVer, 0, This->originatorOS);
StorageUtl_WriteGUID((BYTE *)&hdr->clsid, 0, &This->clsid);
StorageUtl_WriteDWord((BYTE *)&hdr->reserved, 0, 1);
}
static void PropertyStorage_MakeFmtIdOffset(PropertyStorage_impl *This,
FORMATIDOFFSET *fmtOffset)
{
assert(This);
assert(fmtOffset);
StorageUtl_WriteGUID((BYTE *)fmtOffset, 0, &This->fmtid);
StorageUtl_WriteDWord((BYTE *)fmtOffset, offsetof(FORMATIDOFFSET, dwOffset),
sizeof(PROPERTYSETHEADER) + sizeof(FORMATIDOFFSET));
}
static void PropertyStorage_MakeSectionHdr(DWORD cbSection, DWORD numProps,
PROPERTYSECTIONHEADER *hdr)
{
assert(hdr);
StorageUtl_WriteDWord((BYTE *)hdr, 0, cbSection);
StorageUtl_WriteDWord((BYTE *)hdr,
offsetof(PROPERTYSECTIONHEADER, cProperties), numProps);
}
static void PropertyStorage_MakePropertyIdOffset(DWORD propid, DWORD dwOffset,
PROPERTYIDOFFSET *propIdOffset)
{
assert(propIdOffset);
StorageUtl_WriteDWord((BYTE *)propIdOffset, 0, propid);
StorageUtl_WriteDWord((BYTE *)propIdOffset,
offsetof(PROPERTYIDOFFSET, dwOffset), dwOffset);
}
struct DictionaryClosure
{
HRESULT hr;
DWORD bytesWritten;
};
static BOOL PropertyStorage_DictionaryWriter(const void *key,
const void *value, void *extra, void *closure)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)extra;
struct DictionaryClosure *c = (struct DictionaryClosure *)closure;
DWORD propid;
ULONG count;
assert(key);
assert(This);
assert(closure);
StorageUtl_WriteDWord((LPBYTE)&propid, 0, (DWORD)value);
c->hr = IStream_Write(This->stm, &propid, sizeof(propid), &count);
if (FAILED(c->hr))
goto end;
c->bytesWritten += sizeof(DWORD);
if (This->codePage == CP_UNICODE)
{
DWORD keyLen, pad = 0;
StorageUtl_WriteDWord((LPBYTE)&keyLen, 0,
(lstrlenW((LPWSTR)key) + 1) * sizeof(WCHAR));
c->hr = IStream_Write(This->stm, &keyLen, sizeof(keyLen), &count);
if (FAILED(c->hr))
goto end;
c->bytesWritten += sizeof(DWORD);
/* FIXME: endian-convert every char (yuck) */
c->hr = IStream_Write(This->stm, key, keyLen, &count);
if (FAILED(c->hr))
goto end;
c->bytesWritten += keyLen;
if (keyLen % sizeof(DWORD))
{
c->hr = IStream_Write(This->stm, &pad,
sizeof(DWORD) - keyLen % sizeof(DWORD), &count);
if (FAILED(c->hr))
goto end;
c->bytesWritten += sizeof(DWORD) - keyLen % sizeof(DWORD);
}
}
else
{
int len = WideCharToMultiByte(This->codePage, 0, (LPWSTR)key, -1, NULL,
0, NULL, NULL);
LPBYTE buf = HeapAlloc(GetProcessHeap(), 0, len);
DWORD dwLen;
if (!buf)
{
c->hr = STG_E_INSUFFICIENTMEMORY;
goto end;
}
/* FIXME: endian-convert multibyte chars? Ick! */
WideCharToMultiByte(This->codePage, 0, (LPWSTR)key, -1, buf, len,
NULL, NULL);
StorageUtl_WriteDWord((LPBYTE)&dwLen, 0, len);
c->hr = IStream_Write(This->stm, &dwLen, sizeof(dwLen), &count);
if (FAILED(c->hr))
{
HeapFree(GetProcessHeap(), 0, buf);
goto end;
}
c->bytesWritten += sizeof(DWORD);
c->hr = IStream_Write(This->stm, buf, len, &count);
if (FAILED(c->hr))
{
HeapFree(GetProcessHeap(), 0, buf);
goto end;
}
c->bytesWritten += len;
HeapFree(GetProcessHeap(), 0, buf);
}
end:
return SUCCEEDED(c->hr);
}
#define SECTIONHEADER_OFFSET sizeof(PROPERTYSETHEADER) + sizeof(FORMATIDOFFSET)
/* Writes the dictionary to the stream. Assumes without checking that the
* dictionary isn't empty.
*/
static HRESULT PropertyStorage_WriteDictionaryToStream(
PropertyStorage_impl *This, DWORD *sectionOffset)
{
HRESULT hr;
LARGE_INTEGER seek;
PROPERTYIDOFFSET propIdOffset;
ULONG count;
DWORD dwTemp;
struct DictionaryClosure closure;
assert(This);
assert(sectionOffset);
/* The dictionary's always the first property written, so seek to its
* spot.
*/
seek.QuadPart = SECTIONHEADER_OFFSET + sizeof(PROPERTYSECTIONHEADER);
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
PropertyStorage_MakePropertyIdOffset(PID_DICTIONARY, *sectionOffset,
&propIdOffset);
hr = IStream_Write(This->stm, &propIdOffset, sizeof(propIdOffset), &count);
if (FAILED(hr))
goto end;
seek.QuadPart = SECTIONHEADER_OFFSET + *sectionOffset;
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0,
dictionary_num_entries(This->name_to_propid));
hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
if (FAILED(hr))
goto end;
*sectionOffset += sizeof(dwTemp);
closure.hr = S_OK;
closure.bytesWritten = 0;
dictionary_enumerate(This->name_to_propid, PropertyStorage_DictionaryWriter,
&closure);
hr = closure.hr;
if (FAILED(hr))
goto end;
*sectionOffset += closure.bytesWritten;
if (closure.bytesWritten % sizeof(DWORD))
{
TRACE("adding %ld bytes of padding\n", sizeof(DWORD) -
closure.bytesWritten % sizeof(DWORD));
*sectionOffset += sizeof(DWORD) - closure.bytesWritten % sizeof(DWORD);
}
end:
return hr;
}
static HRESULT PropertyStorage_WritePropertyToStream(PropertyStorage_impl *This,
DWORD propNum, DWORD propid, PROPVARIANT *var, DWORD *sectionOffset)
{
HRESULT hr;
LARGE_INTEGER seek;
PROPERTYIDOFFSET propIdOffset;
ULONG count;
DWORD dwType, bytesWritten;
assert(This);
assert(var);
assert(sectionOffset);
TRACE("%p, %ld, 0x%08lx, (%d), (%ld)\n", This, propNum, propid, var->vt,
*sectionOffset);
seek.QuadPart = SECTIONHEADER_OFFSET + sizeof(PROPERTYSECTIONHEADER) +
propNum * sizeof(PROPERTYIDOFFSET);
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
PropertyStorage_MakePropertyIdOffset(propid, *sectionOffset, &propIdOffset);
hr = IStream_Write(This->stm, &propIdOffset, sizeof(propIdOffset), &count);
if (FAILED(hr))
goto end;
seek.QuadPart = SECTIONHEADER_OFFSET + *sectionOffset;
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
StorageUtl_WriteDWord((LPBYTE)&dwType, 0, var->vt);
hr = IStream_Write(This->stm, &dwType, sizeof(dwType), &count);
if (FAILED(hr))
goto end;
*sectionOffset += sizeof(dwType);
switch (var->vt)
{
case VT_EMPTY:
case VT_NULL:
bytesWritten = 0;
break;
case VT_I1:
case VT_UI1:
hr = IStream_Write(This->stm, &var->u.cVal, sizeof(var->u.cVal),
&count);
bytesWritten = count;
break;
case VT_I2:
case VT_UI2:
{
WORD wTemp;
StorageUtl_WriteWord((LPBYTE)&wTemp, 0, var->u.iVal);
hr = IStream_Write(This->stm, &wTemp, sizeof(wTemp), &count);
bytesWritten = count;
break;
}
case VT_I4:
case VT_UI4:
{
DWORD dwTemp;
StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, var->u.lVal);
hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
bytesWritten = count;
break;
}
case VT_LPSTR:
{
DWORD len, dwTemp;
if (This->codePage == CP_UNICODE)
len = (lstrlenW(var->u.pwszVal) + 1) * sizeof(WCHAR);
else
len = lstrlenA(var->u.pszVal) + 1;
StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, len);
hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
if (FAILED(hr))
goto end;
hr = IStream_Write(This->stm, var->u.pszVal, len, &count);
bytesWritten = count + sizeof(DWORD);
break;
}
case VT_LPWSTR:
{
DWORD len = lstrlenW(var->u.pwszVal) + 1, dwTemp;
StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, len);
hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
if (FAILED(hr))
goto end;
hr = IStream_Write(This->stm, var->u.pwszVal, len * sizeof(WCHAR),
&count);
bytesWritten = count + sizeof(DWORD);
break;
}
default:
FIXME("unsupported type: %d\n", var->vt);
return STG_E_INVALIDPARAMETER;
}
if (SUCCEEDED(hr))
{
*sectionOffset += bytesWritten;
if (bytesWritten % sizeof(DWORD))
{
TRACE("adding %ld bytes of padding\n", sizeof(DWORD) -
bytesWritten % sizeof(DWORD));
*sectionOffset += sizeof(DWORD) - bytesWritten % sizeof(DWORD);
}
}
end:
return hr;
}
struct PropertyClosure
{
HRESULT hr;
DWORD propNum;
DWORD *sectionOffset;
};
static BOOL PropertyStorage_PropertiesWriter(const void *key, const void *value,
void *extra, void *closure)
{
PropertyStorage_impl *This = (PropertyStorage_impl *)extra;
struct PropertyClosure *c = (struct PropertyClosure *)closure;
assert(key);
assert(value);
assert(extra);
assert(closure);
c->hr = PropertyStorage_WritePropertyToStream(This,
c->propNum++, (DWORD)key, (PROPVARIANT *)value, c->sectionOffset);
return SUCCEEDED(c->hr);
}
static HRESULT PropertyStorage_WritePropertiesToStream(
PropertyStorage_impl *This, DWORD startingPropNum, DWORD *sectionOffset)
{
struct PropertyClosure closure;
assert(This);
assert(sectionOffset);
closure.hr = S_OK;
closure.propNum = startingPropNum;
closure.sectionOffset = sectionOffset;
dictionary_enumerate(This->propid_to_prop, PropertyStorage_PropertiesWriter,
&closure);
return closure.hr;
}
static HRESULT PropertyStorage_WriteHeadersToStream(PropertyStorage_impl *This)
{
HRESULT hr;
ULONG count = 0;
LARGE_INTEGER seek = { {0} };
PROPERTYSETHEADER hdr;
FORMATIDOFFSET fmtOffset;
assert(This);
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
PropertyStorage_MakeHeader(This, &hdr);
hr = IStream_Write(This->stm, &hdr, sizeof(hdr), &count);
if (FAILED(hr))
goto end;
if (count != sizeof(hdr))
{
hr = STG_E_WRITEFAULT;
goto end;
}
PropertyStorage_MakeFmtIdOffset(This, &fmtOffset);
hr = IStream_Write(This->stm, &fmtOffset, sizeof(fmtOffset), &count);
if (FAILED(hr))
goto end;
if (count != sizeof(fmtOffset))
{
hr = STG_E_WRITEFAULT;
goto end;
}
hr = S_OK;
end:
return hr;
}
static HRESULT PropertyStorage_WriteToStream(PropertyStorage_impl *This)
{
PROPERTYSECTIONHEADER sectionHdr;
HRESULT hr;
ULONG count;
LARGE_INTEGER seek;
DWORD numProps, prop, sectionOffset, dwTemp;
PROPVARIANT var;
assert(This);
PropertyStorage_WriteHeadersToStream(This);
/* Count properties. Always at least one property, the code page */
numProps = 1;
if (dictionary_num_entries(This->name_to_propid))
numProps++;
if (This->locale != LOCALE_SYSTEM_DEFAULT)
numProps++;
if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
numProps++;
numProps += dictionary_num_entries(This->propid_to_prop);
/* Write section header with 0 bytes right now, I'll adjust it after
* writing properties.
*/
PropertyStorage_MakeSectionHdr(0, numProps, &sectionHdr);
seek.QuadPart = SECTIONHEADER_OFFSET;
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
hr = IStream_Write(This->stm, &sectionHdr, sizeof(sectionHdr), &count);
if (FAILED(hr))
goto end;
prop = 0;
sectionOffset = sizeof(PROPERTYSECTIONHEADER) +
numProps * sizeof(PROPERTYIDOFFSET);
if (dictionary_num_entries(This->name_to_propid))
{
prop++;
hr = PropertyStorage_WriteDictionaryToStream(This, &sectionOffset);
if (FAILED(hr))
goto end;
}
PropVariantInit(&var);
var.vt = VT_I2;
var.u.iVal = This->codePage;
hr = PropertyStorage_WritePropertyToStream(This, prop++, PID_CODEPAGE,
&var, &sectionOffset);
if (FAILED(hr))
goto end;
if (This->locale != LOCALE_SYSTEM_DEFAULT)
{
var.vt = VT_I4;
var.u.lVal = This->locale;
hr = PropertyStorage_WritePropertyToStream(This, prop++, PID_LOCALE,
&var, &sectionOffset);
if (FAILED(hr))
goto end;
}
if (This->grfFlags & PROPSETFLAG_CASE_SENSITIVE)
{
var.vt = VT_I4;
var.u.lVal = 1;
hr = PropertyStorage_WritePropertyToStream(This, prop++, PID_BEHAVIOR,
&var, &sectionOffset);
if (FAILED(hr))
goto end;
}
hr = PropertyStorage_WritePropertiesToStream(This, prop, &sectionOffset);
if (FAILED(hr))
goto end;
/* Now write the byte count of the section */
seek.QuadPart = SECTIONHEADER_OFFSET;
hr = IStream_Seek(This->stm, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr))
goto end;
StorageUtl_WriteDWord((LPBYTE)&dwTemp, 0, sectionOffset);
hr = IStream_Write(This->stm, &dwTemp, sizeof(dwTemp), &count);
end:
return hr;
}
/***********************************************************************
* PropertyStorage_Construct
*/
static void PropertyStorage_DestroyDictionaries(PropertyStorage_impl *This)
{
assert(This);
dictionary_destroy(This->name_to_propid);
This->name_to_propid = NULL;
dictionary_destroy(This->propid_to_name);
This->propid_to_name = NULL;
dictionary_destroy(This->propid_to_prop);
This->propid_to_prop = NULL;
}
static HRESULT PropertyStorage_CreateDictionaries(PropertyStorage_impl *This)
{
HRESULT hr = S_OK;
assert(This);
This->name_to_propid = dictionary_create(
PropertyStorage_PropNameCompare, PropertyStorage_PropNameDestroy,
This);
if (!This->name_to_propid)
{
hr = STG_E_INSUFFICIENTMEMORY;
goto end;
}
This->propid_to_name = dictionary_create(PropertyStorage_PropCompare,
NULL, This);
if (!This->propid_to_name)
{
hr = STG_E_INSUFFICIENTMEMORY;
goto end;
}
This->propid_to_prop = dictionary_create(PropertyStorage_PropCompare,
PropertyStorage_PropertyDestroy, This);
if (!This->propid_to_prop)
{
hr = STG_E_INSUFFICIENTMEMORY;
goto end;
}
end:
if (FAILED(hr))
PropertyStorage_DestroyDictionaries(This);
return hr;
}
static HRESULT PropertyStorage_BaseConstruct(IStream *stm,
REFFMTID rfmtid, DWORD grfMode, PropertyStorage_impl **pps)
{
HRESULT hr = S_OK;
assert(pps);
assert(rfmtid);
*pps = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof **pps);
if (!*pps)
return E_OUTOFMEMORY;
(*pps)->vtbl = &IPropertyStorage_Vtbl;
(*pps)->ref = 1;
InitializeCriticalSection(&(*pps)->cs);
(*pps)->stm = stm;
memcpy(&(*pps)->fmtid, rfmtid, sizeof((*pps)->fmtid));
(*pps)->grfMode = grfMode;
hr = PropertyStorage_CreateDictionaries(*pps);
if (FAILED(hr))
{
IStream_Release(stm);
DeleteCriticalSection(&(*pps)->cs);
HeapFree(GetProcessHeap(), 0, *pps);
*pps = NULL;
}
return hr;
}
static HRESULT PropertyStorage_ConstructFromStream(IStream *stm,
REFFMTID rfmtid, DWORD grfMode, IPropertyStorage** pps)
{
PropertyStorage_impl *ps;
HRESULT hr;
assert(pps);
hr = PropertyStorage_BaseConstruct(stm, rfmtid, grfMode, &ps);
if (SUCCEEDED(hr))
{
hr = PropertyStorage_ReadFromStream(ps);
if (SUCCEEDED(hr))
{
*pps = (IPropertyStorage *)ps;
TRACE("PropertyStorage %p constructed\n", ps);
hr = S_OK;
}
else
{
PropertyStorage_DestroyDictionaries(ps);
HeapFree(GetProcessHeap(), 0, ps);
}
}
return hr;
}
static HRESULT PropertyStorage_ConstructEmpty(IStream *stm,
REFFMTID rfmtid, DWORD grfFlags, DWORD grfMode, IPropertyStorage** pps)
{
PropertyStorage_impl *ps;
HRESULT hr;
assert(pps);
hr = PropertyStorage_BaseConstruct(stm, rfmtid, grfMode, &ps);
if (SUCCEEDED(hr))
{
ps->grfFlags = grfFlags;
/* default to Unicode unless told not to, as specified here:
* http://msdn.microsoft.com/library/en-us/stg/stg/names_in_istorage.asp
*/
if (ps->grfFlags & PROPSETFLAG_ANSI)
ps->codePage = GetACP();
else
ps->codePage = CP_UNICODE;
ps->locale = LOCALE_SYSTEM_DEFAULT;
TRACE("Code page is %d, locale is %ld\n", ps->codePage, ps->locale);
*pps = (IPropertyStorage *)ps;
TRACE("PropertyStorage %p constructed\n", ps);
hr = S_OK;
}
return hr;
}
/***********************************************************************
* Implementation of IPropertySetStorage
*/
/************************************************************************
* IPropertySetStorage_fnQueryInterface (IUnknown)
*
* This method forwards to the common QueryInterface implementation
*/
static HRESULT WINAPI IPropertySetStorage_fnQueryInterface(
IPropertySetStorage *ppstg,
REFIID riid,
void** ppvObject)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
return IStorage_QueryInterface( (IStorage*)This, riid, ppvObject );
}
/************************************************************************
* IPropertySetStorage_fnAddRef (IUnknown)
*
* This method forwards to the common AddRef implementation
*/
static ULONG WINAPI IPropertySetStorage_fnAddRef(
IPropertySetStorage *ppstg)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
return IStorage_AddRef( (IStorage*)This );
}
/************************************************************************
* IPropertySetStorage_fnRelease (IUnknown)
*
* This method forwards to the common Release implementation
*/
static ULONG WINAPI IPropertySetStorage_fnRelease(
IPropertySetStorage *ppstg)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
return IStorage_Release( (IStorage*)This );
}
/************************************************************************
* IPropertySetStorage_fnCreate (IPropertySetStorage)
*/
static HRESULT WINAPI IPropertySetStorage_fnCreate(
IPropertySetStorage *ppstg,
REFFMTID rfmtid,
const CLSID* pclsid,
DWORD grfFlags,
DWORD grfMode,
IPropertyStorage** ppprstg)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
WCHAR name[CCH_MAX_PROPSTG_NAME];
IStream *stm = NULL;
HRESULT r;
TRACE("%p %s %08lx %08lx %p\n", This, debugstr_guid(rfmtid), grfFlags,
grfMode, ppprstg);
/* be picky */
if (grfMode != (STGM_CREATE|STGM_READWRITE|STGM_SHARE_EXCLUSIVE))
{
r = STG_E_INVALIDFLAG;
goto end;
}
if (!rfmtid)
{
r = E_INVALIDARG;
goto end;
}
/* FIXME: if (grfFlags & PROPSETFLAG_NONSIMPLE), we need to create a
* storage, not a stream. For now, disallow it.
*/
if (grfFlags & PROPSETFLAG_NONSIMPLE)
{
FIXME("PROPSETFLAG_NONSIMPLE not supported\n");
r = STG_E_INVALIDFLAG;
goto end;
}
r = FmtIdToPropStgName(rfmtid, name);
if (FAILED(r))
goto end;
r = IStorage_CreateStream( (IStorage*)This, name, grfMode, 0, 0, &stm );
if (FAILED(r))
goto end;
r = PropertyStorage_ConstructEmpty(stm, rfmtid, grfFlags, grfMode, ppprstg);
end:
TRACE("returning 0x%08lx\n", r);
return r;
}
/************************************************************************
* IPropertySetStorage_fnOpen (IPropertySetStorage)
*/
static HRESULT WINAPI IPropertySetStorage_fnOpen(
IPropertySetStorage *ppstg,
REFFMTID rfmtid,
DWORD grfMode,
IPropertyStorage** ppprstg)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
IStream *stm = NULL;
WCHAR name[CCH_MAX_PROPSTG_NAME];
HRESULT r;
TRACE("%p %s %08lx %p\n", This, debugstr_guid(rfmtid), grfMode, ppprstg);
/* be picky */
if (grfMode != (STGM_READWRITE|STGM_SHARE_EXCLUSIVE) &&
grfMode != (STGM_READ|STGM_SHARE_EXCLUSIVE))
{
r = STG_E_INVALIDFLAG;
goto end;
}
if (!rfmtid)
{
r = E_INVALIDARG;
goto end;
}
r = FmtIdToPropStgName(rfmtid, name);
if (FAILED(r))
goto end;
r = IStorage_OpenStream((IStorage*) This, name, 0, grfMode, 0, &stm );
if (FAILED(r))
goto end;
r = PropertyStorage_ConstructFromStream(stm, rfmtid, grfMode, ppprstg);
end:
TRACE("returning 0x%08lx\n", r);
return r;
}
/************************************************************************
* IPropertySetStorage_fnDelete (IPropertySetStorage)
*/
static HRESULT WINAPI IPropertySetStorage_fnDelete(
IPropertySetStorage *ppstg,
REFFMTID rfmtid)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
IStorage *stg = NULL;
WCHAR name[CCH_MAX_PROPSTG_NAME];
HRESULT r;
TRACE("%p %s\n", This, debugstr_guid(rfmtid));
if (!rfmtid)
return E_INVALIDARG;
r = FmtIdToPropStgName(rfmtid, name);
if (FAILED(r))
return r;
stg = (IStorage*) This;
return IStorage_DestroyElement(stg, name);
}
/************************************************************************
* IPropertySetStorage_fnEnum (IPropertySetStorage)
*/
static HRESULT WINAPI IPropertySetStorage_fnEnum(
IPropertySetStorage *ppstg,
IEnumSTATPROPSETSTG** ppenum)
{
_ICOM_THIS_From_IPropertySetStorage(StorageImpl, ppstg);
FIXME("%p\n", This);
return E_NOTIMPL;
}
/***********************************************************************
* vtables
*/
IPropertySetStorageVtbl IPropertySetStorage_Vtbl =
{
IPropertySetStorage_fnQueryInterface,
IPropertySetStorage_fnAddRef,
IPropertySetStorage_fnRelease,
IPropertySetStorage_fnCreate,
IPropertySetStorage_fnOpen,
IPropertySetStorage_fnDelete,
IPropertySetStorage_fnEnum
};
static IPropertyStorageVtbl IPropertyStorage_Vtbl =
{
IPropertyStorage_fnQueryInterface,
IPropertyStorage_fnAddRef,
IPropertyStorage_fnRelease,
IPropertyStorage_fnReadMultiple,
IPropertyStorage_fnWriteMultiple,
IPropertyStorage_fnDeleteMultiple,
IPropertyStorage_fnReadPropertyNames,
IPropertyStorage_fnWritePropertyNames,
IPropertyStorage_fnDeletePropertyNames,
IPropertyStorage_fnCommit,
IPropertyStorage_fnRevert,
IPropertyStorage_fnEnum,
IPropertyStorage_fnSetTimes,
IPropertyStorage_fnSetClass,
IPropertyStorage_fnStat,
};
/***********************************************************************
* Format ID <-> name conversion
*/
static const WCHAR szSummaryInfo[] = { 5,'S','u','m','m','a','r','y',
'I','n','f','o','r','m','a','t','i','o','n',0 };
static const WCHAR szDocSummaryInfo[] = { 5,'D','o','c','u','m','e','n','t',
'S','u','m','m','a','r','y','I','n','f','o','r','m','a','t','i','o','n',0 };
#define BITS_PER_BYTE 8
#define CHARMASK 0x1f
#define BITS_IN_CHARMASK 5
#define NUM_ALPHA_CHARS 26
/***********************************************************************
* FmtIdToPropStgName [ole32.@]
* Returns the storage name of the format ID rfmtid.
* PARAMS
* rfmtid [I] Format ID for which to return a storage name
* str [O] Storage name associated with rfmtid.
*
* RETURNS
* E_INVALIDARG if rfmtid or str i NULL, S_OK otherwise.
*
* NOTES
* str must be at least CCH_MAX_PROPSTG_NAME characters in length.
* Based on the algorithm described here:
* http://msdn.microsoft.com/library/en-us/stg/stg/names_in_istorage.asp
*/
HRESULT WINAPI FmtIdToPropStgName(const FMTID *rfmtid, LPOLESTR str)
{
static const char fmtMap[] = "abcdefghijklmnopqrstuvwxyz012345";
TRACE("%s, %p\n", debugstr_guid(rfmtid), str);
if (!rfmtid) return E_INVALIDARG;
if (!str) return E_INVALIDARG;
if (IsEqualGUID(&FMTID_SummaryInformation, rfmtid))
lstrcpyW(str, szSummaryInfo);
else if (IsEqualGUID(&FMTID_DocSummaryInformation, rfmtid))
lstrcpyW(str, szDocSummaryInfo);
else if (IsEqualGUID(&FMTID_UserDefinedProperties, rfmtid))
lstrcpyW(str, szDocSummaryInfo);
else
{
BYTE *fmtptr;
WCHAR *pstr = str;
ULONG bitsRemaining = BITS_PER_BYTE;
*pstr++ = 5;
for (fmtptr = (BYTE *)rfmtid; fmtptr < (BYTE *)rfmtid + sizeof(FMTID); )
{
ULONG i = *fmtptr >> (BITS_PER_BYTE - bitsRemaining);
if (bitsRemaining >= BITS_IN_CHARMASK)
{
*pstr = (WCHAR)(fmtMap[i & CHARMASK]);
if (bitsRemaining == BITS_PER_BYTE && *pstr >= 'a' &&
*pstr <= 'z')
*pstr += 'A' - 'a';
pstr++;
bitsRemaining -= BITS_IN_CHARMASK;
if (bitsRemaining == 0)
{
fmtptr++;
bitsRemaining = BITS_PER_BYTE;
}
}
else
{
if (++fmtptr < (BYTE *)rfmtid + sizeof(FMTID))
i |= *fmtptr << bitsRemaining;
*pstr++ = (WCHAR)(fmtMap[i & CHARMASK]);
bitsRemaining += BITS_PER_BYTE - BITS_IN_CHARMASK;
}
}
*pstr = 0;
}
TRACE("returning %s\n", debugstr_w(str));
return S_OK;
}
/***********************************************************************
* PropStgNameToFmtId [ole32.@]
* Returns the format ID corresponding to the given name.
* PARAMS
* str [I] Storage name to convert to a format ID.
* rfmtid [O] Format ID corresponding to str.
*
* RETURNS
* E_INVALIDARG if rfmtid or str is NULL or if str can't be converted to
* a format ID, S_OK otherwise.
*
* NOTES
* Based on the algorithm described here:
* http://msdn.microsoft.com/library/en-us/stg/stg/names_in_istorage.asp
*/
HRESULT WINAPI PropStgNameToFmtId(const LPOLESTR str, FMTID *rfmtid)
{
HRESULT hr = STG_E_INVALIDNAME;
TRACE("%s, %p\n", debugstr_w(str), rfmtid);
if (!rfmtid) return E_INVALIDARG;
if (!str) return STG_E_INVALIDNAME;
if (!lstrcmpiW(str, szDocSummaryInfo))
{
memcpy(rfmtid, &FMTID_DocSummaryInformation, sizeof(*rfmtid));
hr = S_OK;
}
else if (!lstrcmpiW(str, szSummaryInfo))
{
memcpy(rfmtid, &FMTID_SummaryInformation, sizeof(*rfmtid));
hr = S_OK;
}
else
{
ULONG bits;
BYTE *fmtptr = (BYTE *)rfmtid - 1;
const WCHAR *pstr = str;
memset(rfmtid, 0, sizeof(*rfmtid));
for (bits = 0; bits < sizeof(FMTID) * BITS_PER_BYTE;
bits += BITS_IN_CHARMASK)
{
ULONG bitsUsed = bits % BITS_PER_BYTE, bitsStored;
WCHAR wc;
if (bitsUsed == 0)
fmtptr++;
wc = *++pstr - 'A';
if (wc > NUM_ALPHA_CHARS)
{
wc += 'A' - 'a';
if (wc > NUM_ALPHA_CHARS)
{
wc += 'a' - '0' + NUM_ALPHA_CHARS;
if (wc > CHARMASK)
{
WARN("invalid character (%d)\n", *pstr);
goto end;
}
}
}
*fmtptr |= wc << bitsUsed;
bitsStored = min(BITS_PER_BYTE - bitsUsed, BITS_IN_CHARMASK);
if (bitsStored < BITS_IN_CHARMASK)
{
wc >>= BITS_PER_BYTE - bitsUsed;
if (bits + bitsStored == sizeof(FMTID) * BITS_PER_BYTE)
{
if (wc != 0)
{
WARN("extra bits\n");
goto end;
}
break;
}
fmtptr++;
*fmtptr |= (BYTE)wc;
}
}
hr = S_OK;
}
end:
return hr;
}
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