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wine/dlls/shell32/shlfolder.c
Andrew Talbot 6994071269 shell32: Remove unneeded casts.
2008-01-21 11:39:09 +01:00

571 lines
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/*
* Shell Folder stuff
*
* Copyright 1997 Marcus Meissner
* Copyright 1998, 1999, 2002 Juergen Schmied
*
* IShellFolder2 and related interfaces
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#define COBJMACROS
#include "winerror.h"
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "wingdi.h"
#include "winuser.h"
#include "ole2.h"
#include "shlguid.h"
#include "pidl.h"
#include "undocshell.h"
#include "shell32_main.h"
#include "shlwapi.h"
#include "wine/debug.h"
#include "shfldr.h"
WINE_DEFAULT_DEBUG_CHANNEL (shell);
static const WCHAR wszDotShellClassInfo[] = {
'.','S','h','e','l','l','C','l','a','s','s','I','n','f','o',0};
/***************************************************************************
* SHELL32_GetCustomFolderAttribute (internal function)
*
* Gets a value from the folder's desktop.ini file, if one exists.
*
* PARAMETERS
* pidl [I] Folder containing the desktop.ini file.
* pwszHeading [I] Heading in .ini file.
* pwszAttribute [I] Attribute in .ini file.
* pwszValue [O] Buffer to store value into.
* cchValue [I] Size in characters including NULL of buffer pointed to
* by pwszValue.
*
* RETURNS
* TRUE if returned non-NULL value.
* FALSE otherwise.
*/
static inline BOOL SHELL32_GetCustomFolderAttributeFromPath(
LPWSTR pwszFolderPath, LPCWSTR pwszHeading, LPCWSTR pwszAttribute,
LPWSTR pwszValue, DWORD cchValue)
{
static const WCHAR wszDesktopIni[] =
{'d','e','s','k','t','o','p','.','i','n','i',0};
static const WCHAR wszDefault[] = {0};
PathAddBackslashW(pwszFolderPath);
PathAppendW(pwszFolderPath, wszDesktopIni);
return GetPrivateProfileStringW(pwszHeading, pwszAttribute, wszDefault,
pwszValue, cchValue, pwszFolderPath);
}
BOOL SHELL32_GetCustomFolderAttribute(
LPCITEMIDLIST pidl, LPCWSTR pwszHeading, LPCWSTR pwszAttribute,
LPWSTR pwszValue, DWORD cchValue)
{
DWORD dwAttrib = FILE_ATTRIBUTE_SYSTEM;
WCHAR wszFolderPath[MAX_PATH];
/* Hack around not having system attribute on non-Windows file systems */
if (0)
dwAttrib = _ILGetFileAttributes(pidl, NULL, 0);
if (dwAttrib & FILE_ATTRIBUTE_SYSTEM)
{
if (!SHGetPathFromIDListW(pidl, wszFolderPath))
return FALSE;
return SHELL32_GetCustomFolderAttributeFromPath(wszFolderPath, pwszHeading,
pwszAttribute, pwszValue, cchValue);
}
return FALSE;
}
/***************************************************************************
* GetNextElement (internal function)
*
* Gets a part of a string till the first backslash.
*
* PARAMETERS
* pszNext [IN] string to get the element from
* pszOut [IN] pointer to buffer which receives string
* dwOut [IN] length of pszOut
*
* RETURNS
* LPSTR pointer to first, not yet parsed char
*/
LPCWSTR GetNextElementW (LPCWSTR pszNext, LPWSTR pszOut, DWORD dwOut)
{
LPCWSTR pszTail = pszNext;
DWORD dwCopy;
TRACE ("(%s %p 0x%08x)\n", debugstr_w (pszNext), pszOut, dwOut);
*pszOut = 0x0000;
if (!pszNext || !*pszNext)
return NULL;
while (*pszTail && (*pszTail != (WCHAR) '\\'))
pszTail++;
dwCopy = pszTail - pszNext + 1;
lstrcpynW (pszOut, pszNext, (dwOut < dwCopy) ? dwOut : dwCopy);
if (*pszTail)
pszTail++;
else
pszTail = NULL;
TRACE ("--(%s %s 0x%08x %p)\n", debugstr_w (pszNext), debugstr_w (pszOut), dwOut, pszTail);
return pszTail;
}
HRESULT SHELL32_ParseNextElement (IShellFolder2 * psf, HWND hwndOwner, LPBC pbc,
LPITEMIDLIST * pidlInOut, LPOLESTR szNext, DWORD * pEaten, DWORD * pdwAttributes)
{
HRESULT hr = E_INVALIDARG;
LPITEMIDLIST pidlOut = NULL,
pidlTemp = NULL;
IShellFolder *psfChild;
TRACE ("(%p, %p, %p, %s)\n", psf, pbc, pidlInOut ? *pidlInOut : NULL, debugstr_w (szNext));
/* get the shellfolder for the child pidl and let it analyse further */
hr = IShellFolder_BindToObject (psf, *pidlInOut, pbc, &IID_IShellFolder, (LPVOID *) & psfChild);
if (SUCCEEDED(hr)) {
hr = IShellFolder_ParseDisplayName (psfChild, hwndOwner, pbc, szNext, pEaten, &pidlOut, pdwAttributes);
IShellFolder_Release (psfChild);
if (SUCCEEDED(hr)) {
pidlTemp = ILCombine (*pidlInOut, pidlOut);
if (!pidlTemp)
hr = E_OUTOFMEMORY;
}
if (pidlOut)
ILFree (pidlOut);
}
ILFree (*pidlInOut);
*pidlInOut = pidlTemp;
TRACE ("-- pidl=%p ret=0x%08x\n", pidlInOut ? *pidlInOut : NULL, hr);
return hr;
}
/***********************************************************************
* SHELL32_CoCreateInitSF
*
* Creates a shell folder and initializes it with a pidl and a root folder
* via IPersistFolder3 or IPersistFolder.
*
* NOTES
* pathRoot can be NULL for Folders being a drive.
* In this case the absolute path is built from pidlChild (eg. C:)
*/
static HRESULT SHELL32_CoCreateInitSF (LPCITEMIDLIST pidlRoot, LPCWSTR pathRoot,
LPCITEMIDLIST pidlChild, REFCLSID clsid, LPVOID * ppvOut)
{
HRESULT hr;
TRACE ("%p %s %p\n", pidlRoot, debugstr_w(pathRoot), pidlChild);
hr = SHCoCreateInstance(NULL, clsid, NULL, &IID_IShellFolder, ppvOut);
if (SUCCEEDED (hr))
{
LPITEMIDLIST pidlAbsolute = ILCombine (pidlRoot, pidlChild);
IPersistFolder *pPF;
IPersistFolder3 *ppf;
if (_ILIsFolder(pidlChild) &&
SUCCEEDED (IUnknown_QueryInterface ((IUnknown *) * ppvOut, &IID_IPersistFolder3, (LPVOID *) & ppf)))
{
PERSIST_FOLDER_TARGET_INFO ppfti;
ZeroMemory (&ppfti, sizeof (ppfti));
/* fill the PERSIST_FOLDER_TARGET_INFO */
ppfti.dwAttributes = -1;
ppfti.csidl = -1;
/* build path */
if (pathRoot) {
lstrcpynW (ppfti.szTargetParsingName, pathRoot, MAX_PATH - 1);
PathAddBackslashW(ppfti.szTargetParsingName); /* FIXME: why have drives a backslash here ? */
}
if (pidlChild) {
int len = lstrlenW(ppfti.szTargetParsingName);
if (!_ILSimpleGetTextW(pidlChild, ppfti.szTargetParsingName + len, MAX_PATH - len))
hr = E_INVALIDARG;
}
IPersistFolder3_InitializeEx (ppf, NULL, pidlAbsolute, &ppfti);
IPersistFolder3_Release (ppf);
}
else if (SUCCEEDED ((hr = IUnknown_QueryInterface ((IUnknown *) * ppvOut, &IID_IPersistFolder, (LPVOID *) & pPF)))) {
IPersistFolder_Initialize (pPF, pidlAbsolute);
IPersistFolder_Release (pPF);
}
ILFree (pidlAbsolute);
}
TRACE ("-- (%p) ret=0x%08x\n", *ppvOut, hr);
return hr;
}
/***********************************************************************
* SHELL32_BindToChild [Internal]
*
* Common code for IShellFolder_BindToObject.
*
* PARAMS
* pidlRoot [I] The parent shell folder's absolute pidl.
* pathRoot [I] Absolute dos path of the parent shell folder.
* pidlComplete [I] PIDL of the child. Relative to pidlRoot.
* riid [I] GUID of the interface, which ppvOut shall be bound to.
* ppvOut [O] A reference to the child's interface (riid).
*
* NOTES
* pidlComplete has to contain at least one non empty SHITEMID.
* This function makes special assumptions on the shell namespace, which
* means you probably can't use it for your IShellFolder implementation.
*/
HRESULT SHELL32_BindToChild (LPCITEMIDLIST pidlRoot,
LPCWSTR pathRoot, LPCITEMIDLIST pidlComplete, REFIID riid, LPVOID * ppvOut)
{
GUID const *clsid;
IShellFolder *pSF;
HRESULT hr;
LPITEMIDLIST pidlChild;
if (!pidlRoot || !ppvOut || !pidlComplete || !pidlComplete->mkid.cb)
return E_INVALIDARG;
*ppvOut = NULL;
pidlChild = ILCloneFirst (pidlComplete);
if ((clsid = _ILGetGUIDPointer (pidlChild))) {
/* virtual folder */
hr = SHELL32_CoCreateInitSF (pidlRoot, pathRoot, pidlChild, clsid, (LPVOID *)&pSF);
} else {
/* file system folder */
CLSID clsidFolder = CLSID_ShellFSFolder;
static const WCHAR wszCLSID[] = {'C','L','S','I','D',0};
WCHAR wszCLSIDValue[CHARS_IN_GUID], wszFolderPath[MAX_PATH], *pwszPathTail = wszFolderPath;
/* see if folder CLSID should be overridden by desktop.ini file */
if (pathRoot) {
lstrcpynW(wszFolderPath, pathRoot, MAX_PATH);
pwszPathTail = PathAddBackslashW(wszFolderPath);
}
_ILSimpleGetTextW(pidlChild,pwszPathTail,MAX_PATH - (int)(pwszPathTail - wszFolderPath));
if (SHELL32_GetCustomFolderAttributeFromPath (wszFolderPath,
wszDotShellClassInfo, wszCLSID, wszCLSIDValue, CHARS_IN_GUID))
CLSIDFromString (wszCLSIDValue, &clsidFolder);
hr = SHELL32_CoCreateInitSF (pidlRoot, pathRoot, pidlChild,
&clsidFolder, (LPVOID *)&pSF);
}
ILFree (pidlChild);
if (SUCCEEDED (hr)) {
if (_ILIsPidlSimple (pidlComplete)) {
/* no sub folders */
hr = IShellFolder_QueryInterface (pSF, riid, ppvOut);
} else {
/* go deeper */
hr = IShellFolder_BindToObject (pSF, ILGetNext (pidlComplete), NULL, riid, ppvOut);
}
IShellFolder_Release (pSF);
}
TRACE ("-- returning (%p) %08x\n", *ppvOut, hr);
return hr;
}
/***********************************************************************
* SHELL32_GetDisplayNameOfChild
*
* Retrieves the display name of a child object of a shellfolder.
*
* For a pidl eg. [subpidl1][subpidl2][subpidl3]:
* - it binds to the child shellfolder [subpidl1]
* - asks it for the displayname of [subpidl2][subpidl3]
*
* Is possible the pidl is a simple pidl. In this case it asks the
* subfolder for the displayname of an empty pidl. The subfolder
* returns the own displayname eg. "::{guid}". This is used for
* virtual folders with the registry key WantsFORPARSING set.
*/
HRESULT SHELL32_GetDisplayNameOfChild (IShellFolder2 * psf,
LPCITEMIDLIST pidl, DWORD dwFlags, LPWSTR szOut, DWORD dwOutLen)
{
LPITEMIDLIST pidlFirst;
HRESULT hr = E_INVALIDARG;
TRACE ("(%p)->(pidl=%p 0x%08x %p 0x%08x)\n", psf, pidl, dwFlags, szOut, dwOutLen);
pdump (pidl);
pidlFirst = ILCloneFirst (pidl);
if (pidlFirst) {
IShellFolder2 *psfChild;
hr = IShellFolder_BindToObject (psf, pidlFirst, NULL, &IID_IShellFolder, (LPVOID *) & psfChild);
if (SUCCEEDED (hr)) {
STRRET strTemp;
LPITEMIDLIST pidlNext = ILGetNext (pidl);
hr = IShellFolder_GetDisplayNameOf (psfChild, pidlNext, dwFlags, &strTemp);
if (SUCCEEDED (hr)) {
if(!StrRetToStrNW (szOut, dwOutLen, &strTemp, pidlNext))
hr = E_FAIL;
}
IShellFolder_Release (psfChild);
}
ILFree (pidlFirst);
} else
hr = E_OUTOFMEMORY;
TRACE ("-- ret=0x%08x %s\n", hr, debugstr_w(szOut));
return hr;
}
/***********************************************************************
* SHELL32_GetItemAttributes
*
* NOTES
* Observed values:
* folder: 0xE0000177 FILESYSTEM | HASSUBFOLDER | FOLDER
* file: 0x40000177 FILESYSTEM
* drive: 0xf0000144 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR
* mycomputer: 0xb0000154 HASSUBFOLDER | FOLDER | FILESYSANCESTOR
* (seems to be default for shell extensions if no registry entry exists)
*
* win2k:
* folder: 0xF0400177 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR | CANMONIKER
* file: 0x40400177 FILESYSTEM | CANMONIKER
* drive 0xF0400154 FILESYSTEM | HASSUBFOLDER | FOLDER | FILESYSANCESTOR | CANMONIKER | CANRENAME (LABEL)
*
* According to the MSDN documentation this function should not set flags. It claims only to reset flags when necessary.
* However it turns out the native shell32.dll _sets_ flags in several cases - so do we.
*/
HRESULT SHELL32_GetItemAttributes (IShellFolder * psf, LPCITEMIDLIST pidl, LPDWORD pdwAttributes)
{
DWORD dwAttributes;
BOOL has_guid;
static const DWORD dwSupportedAttr=
SFGAO_CANCOPY | /*0x00000001 */
SFGAO_CANMOVE | /*0x00000002 */
SFGAO_CANLINK | /*0x00000004 */
SFGAO_CANRENAME | /*0x00000010 */
SFGAO_CANDELETE | /*0x00000020 */
SFGAO_HASPROPSHEET | /*0x00000040 */
SFGAO_DROPTARGET | /*0x00000100 */
SFGAO_LINK | /*0x00010000 */
SFGAO_READONLY | /*0x00040000 */
SFGAO_HIDDEN | /*0x00080000 */
SFGAO_FILESYSANCESTOR | /*0x10000000 */
SFGAO_FOLDER | /*0x20000000 */
SFGAO_FILESYSTEM | /*0x40000000 */
SFGAO_HASSUBFOLDER; /*0x80000000 */
TRACE ("0x%08x\n", *pdwAttributes);
if (*pdwAttributes & ~dwSupportedAttr)
{
WARN ("attributes 0x%08x not implemented\n", (*pdwAttributes & ~dwSupportedAttr));
*pdwAttributes &= dwSupportedAttr;
}
has_guid = _ILGetGUIDPointer(pidl) != NULL;
dwAttributes = *pdwAttributes;
if (_ILIsDrive (pidl)) {
*pdwAttributes &= SFGAO_HASSUBFOLDER|SFGAO_FILESYSTEM|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR|
SFGAO_DROPTARGET|SFGAO_HASPROPSHEET|SFGAO_CANLINK;
} else if (has_guid && HCR_GetFolderAttributes(pidl, &dwAttributes)) {
*pdwAttributes = dwAttributes;
} else if (_ILGetDataPointer (pidl)) {
dwAttributes = _ILGetFileAttributes (pidl, NULL, 0);
if (!dwAttributes && has_guid) {
WCHAR path[MAX_PATH];
STRRET strret;
/* File attributes are not present in the internal PIDL structure, so get them from the file system. */
HRESULT hr = IShellFolder_GetDisplayNameOf(psf, pidl, SHGDN_FORPARSING, &strret);
if (SUCCEEDED(hr)) {
hr = StrRetToBufW(&strret, pidl, path, MAX_PATH);
/* call GetFileAttributes() only for file system paths, not for parsing names like "::{...}" */
if (SUCCEEDED(hr) && path[0]!=':')
dwAttributes = GetFileAttributesW(path);
}
}
/* Set common attributes */
*pdwAttributes |= SFGAO_FILESYSTEM | SFGAO_DROPTARGET | SFGAO_HASPROPSHEET | SFGAO_CANDELETE |
SFGAO_CANRENAME | SFGAO_CANLINK | SFGAO_CANMOVE | SFGAO_CANCOPY;
if (dwAttributes & FILE_ATTRIBUTE_DIRECTORY)
*pdwAttributes |= (SFGAO_FOLDER | SFGAO_HASSUBFOLDER | SFGAO_FILESYSANCESTOR);
else
*pdwAttributes &= ~(SFGAO_FOLDER | SFGAO_HASSUBFOLDER | SFGAO_FILESYSANCESTOR);
if (dwAttributes & FILE_ATTRIBUTE_HIDDEN)
*pdwAttributes |= SFGAO_HIDDEN;
else
*pdwAttributes &= ~SFGAO_HIDDEN;
if (dwAttributes & FILE_ATTRIBUTE_READONLY)
*pdwAttributes |= SFGAO_READONLY;
else
*pdwAttributes &= ~SFGAO_READONLY;
if (SFGAO_LINK & *pdwAttributes) {
char ext[MAX_PATH];
if (!_ILGetExtension(pidl, ext, MAX_PATH) || lstrcmpiA(ext, "lnk"))
*pdwAttributes &= ~SFGAO_LINK;
}
if (SFGAO_HASSUBFOLDER & *pdwAttributes)
{
IShellFolder *psf2;
if (SUCCEEDED(IShellFolder_BindToObject(psf, pidl, 0, (REFIID)&IID_IShellFolder, (LPVOID *)&psf2)))
{
IEnumIDList *pEnumIL = NULL;
if (SUCCEEDED(IShellFolder_EnumObjects(psf2, 0, SHCONTF_FOLDERS, &pEnumIL)))
{
if (IEnumIDList_Skip(pEnumIL, 1) != S_OK)
*pdwAttributes &= ~SFGAO_HASSUBFOLDER;
IEnumIDList_Release(pEnumIL);
}
IShellFolder_Release(psf2);
}
}
} else {
*pdwAttributes &= SFGAO_HASSUBFOLDER|SFGAO_FOLDER|SFGAO_FILESYSANCESTOR|SFGAO_DROPTARGET|SFGAO_HASPROPSHEET|SFGAO_CANRENAME|SFGAO_CANLINK;
}
TRACE ("-- 0x%08x\n", *pdwAttributes);
return S_OK;
}
/***********************************************************************
* SHELL32_CompareIDs
*/
HRESULT SHELL32_CompareIDs (IShellFolder * iface, LPARAM lParam, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
{
int type1,
type2;
char szTemp1[MAX_PATH];
char szTemp2[MAX_PATH];
HRESULT nReturn;
LPITEMIDLIST firstpidl,
nextpidl1,
nextpidl2;
IShellFolder *psf;
/* test for empty pidls */
BOOL isEmpty1 = _ILIsDesktop (pidl1);
BOOL isEmpty2 = _ILIsDesktop (pidl2);
if (isEmpty1 && isEmpty2)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 0 );
if (isEmpty1)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
if (isEmpty2)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
/* test for different types. Sort order is the PT_* constant */
type1 = _ILGetDataPointer (pidl1)->type;
type2 = _ILGetDataPointer (pidl2)->type;
if (type1 < type2)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
else if (type1 > type2)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
/* test for name of pidl */
_ILSimpleGetText (pidl1, szTemp1, MAX_PATH);
_ILSimpleGetText (pidl2, szTemp2, MAX_PATH);
nReturn = lstrcmpiA (szTemp1, szTemp2);
if (nReturn < 0)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
else if (nReturn > 0)
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
/* test of complex pidls */
firstpidl = ILCloneFirst (pidl1);
nextpidl1 = ILGetNext (pidl1);
nextpidl2 = ILGetNext (pidl2);
/* optimizing: test special cases and bind not deeper */
/* the deeper shellfolder would do the same */
isEmpty1 = _ILIsDesktop (nextpidl1);
isEmpty2 = _ILIsDesktop (nextpidl2);
if (isEmpty1 && isEmpty2) {
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 0 );
} else if (isEmpty1) {
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, (WORD)-1 );
} else if (isEmpty2) {
return MAKE_HRESULT( SEVERITY_SUCCESS, 0, 1 );
/* optimizing end */
} else if (SUCCEEDED (IShellFolder_BindToObject (iface, firstpidl, NULL, &IID_IShellFolder, (LPVOID *) & psf))) {
nReturn = IShellFolder_CompareIDs (psf, lParam, nextpidl1, nextpidl2);
IShellFolder_Release (psf);
}
ILFree (firstpidl);
return nReturn;
}
/***********************************************************************
* SHCreateLinks
*
* Undocumented.
*/
HRESULT WINAPI SHCreateLinks( HWND hWnd, LPCSTR lpszDir, LPDATAOBJECT lpDataObject,
UINT uFlags, LPITEMIDLIST *lppidlLinks)
{
FIXME("%p %s %p %08x %p\n",hWnd,lpszDir,lpDataObject,uFlags,lppidlLinks);
return E_NOTIMPL;
}
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