reactos/dll/win32/shell32/CQueryAssociations.cpp

792 lines
24 KiB
C++
Raw Normal View History

/*
* IQueryAssociations object and helper functions
*
* Copyright 2002 Jon Griffiths
*
* 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 "precomp.h"
WINE_DEFAULT_DEBUG_CHANNEL(shell);
/**************************************************************************
* IQueryAssociations
*
* DESCRIPTION
* This object provides a layer of abstraction over the system registry in
* order to simplify the process of parsing associations between files.
* Associations in this context means the registry entries that link (for
* example) the extension of a file with its description, list of
* applications to open the file with, and actions that can be performed on it
* (the shell displays such information in the context menu of explorer
* when you right-click on a file).
*
* HELPERS
* You can use this object transparently by calling the helper functions
* AssocQueryKeyA(), AssocQueryStringA() and AssocQueryStringByKeyA(). These
* create an IQueryAssociations object, perform the requested actions
* and then dispose of the object. Alternatively, you can create an instance
* of the object using AssocCreate() and call the following methods on it:
*
* METHODS
*/
CQueryAssociations::CQueryAssociations() : hkeySource(0), hkeyProgID(0)
{
}
CQueryAssociations::~CQueryAssociations()
{
}
/**************************************************************************
* IQueryAssociations_Init
*
* Initialise an IQueryAssociations object.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* pszAssoc [I] String for the root key name, or NULL if hkeyProgid is given
* hkeyProgid [I] Handle for the root key, or NULL if pszAssoc is given
* hWnd [I] Reserved, must be NULL.
*
* RETURNS
* Success: S_OK. iface is initialised with the parameters given.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT STDMETHODCALLTYPE CQueryAssociations::Init(
ASSOCF cfFlags,
LPCWSTR pszAssoc,
HKEY hkeyProgid,
HWND hWnd)
{
static const WCHAR szProgID[] = L"ProgID";
TRACE("(%p)->(%d,%s,%p,%p)\n", this,
cfFlags,
debugstr_w(pszAssoc),
hkeyProgid,
hWnd);
if (hWnd != NULL)
{
FIXME("hwnd != NULL not supported\n");
}
if (cfFlags != 0)
{
FIXME("unsupported flags: %x\n", cfFlags);
}
RegCloseKey(this->hkeySource);
RegCloseKey(this->hkeyProgID);
this->hkeySource = this->hkeyProgID = NULL;
if (pszAssoc != NULL)
{
WCHAR *progId;
HRESULT hr;
LONG ret = RegOpenKeyExW(HKEY_CLASSES_ROOT,
pszAssoc,
0,
KEY_READ,
&this->hkeySource);
if (ret)
{
return S_OK;
}
/* if this is a progid */
if (*pszAssoc != '.' && *pszAssoc != '{')
{
this->hkeyProgID = this->hkeySource;
return S_OK;
}
/* if it's not a progid, it's a file extension or clsid */
if (*pszAssoc == '.')
{
/* for a file extension, the progid is the default value */
hr = this->GetValue(this->hkeySource, NULL, (void**)&progId, NULL);
if (FAILED(hr))
return S_OK;
}
else /* if (*pszAssoc == '{') */
{
HKEY progIdKey;
/* for a clsid, the progid is the default value of the ProgID subkey */
ret = RegOpenKeyExW(this->hkeySource,
szProgID,
0,
KEY_READ,
&progIdKey);
if (ret != ERROR_SUCCESS)
return S_OK;
hr = this->GetValue(progIdKey, NULL, (void**)&progId, NULL);
if (FAILED(hr))
return S_OK;
RegCloseKey(progIdKey);
}
/* open the actual progid key, the one with the shell subkey */
ret = RegOpenKeyExW(HKEY_CLASSES_ROOT,
progId,
0,
KEY_READ,
&this->hkeyProgID);
HeapFree(GetProcessHeap(), 0, progId);
return S_OK;
}
else if (hkeyProgid != NULL)
{
/* reopen the key so we don't end up closing a key owned by the caller */
RegOpenKeyExW(hkeyProgid, NULL, 0, KEY_READ, &this->hkeyProgID);
this->hkeySource = this->hkeyProgID;
return S_OK;
}
else
return E_INVALIDARG;
}
/**************************************************************************
* IQueryAssociations_GetString
*
* Get a file association string from the registry.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* str [I] Type of string to get (ASSOCSTR enum from "shlwapi.h")
* pszExtra [I] Extra information about the string location
* pszOut [O] Destination for the association string
* pcchOut [I/O] Length of pszOut
*
* RETURNS
* Success: S_OK. pszOut contains the string, pcchOut contains its length.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT STDMETHODCALLTYPE CQueryAssociations::GetString(
ASSOCF flags,
ASSOCSTR str,
LPCWSTR pszExtra,
LPWSTR pszOut,
DWORD *pcchOut)
{
const ASSOCF unimplemented_flags = ~ASSOCF_NOTRUNCATE;
DWORD len = 0;
HRESULT hr;
WCHAR path[MAX_PATH];
TRACE("(%p)->(0x%08x, %u, %s, %p, %p)\n", this, flags, str, debugstr_w(pszExtra), pszOut, pcchOut);
if (flags & unimplemented_flags)
{
FIXME("%08x: unimplemented flags\n", flags & unimplemented_flags);
}
if (!pcchOut)
{
return E_UNEXPECTED;
}
if (!this->hkeySource && !this->hkeyProgID)
{
return HRESULT_FROM_WIN32(ERROR_NO_ASSOCIATION);
}
switch (str)
{
case ASSOCSTR_COMMAND:
{
WCHAR *command;
hr = this->GetCommand(pszExtra, &command);
if (SUCCEEDED(hr))
{
hr = this->ReturnString(flags, pszOut, pcchOut, command, strlenW(command) + 1);
HeapFree(GetProcessHeap(), 0, command);
}
return hr;
}
case ASSOCSTR_EXECUTABLE:
{
hr = this->GetExecutable(pszExtra, path, MAX_PATH, &len);
if (FAILED(hr))
{
return hr;
}
len++;
return this->ReturnString(flags, pszOut, pcchOut, path, len);
}
case ASSOCSTR_FRIENDLYDOCNAME:
{
WCHAR *pszFileType;
hr = this->GetValue(this->hkeySource, NULL, (void**)&pszFileType, NULL);
if (FAILED(hr))
{
return hr;
}
DWORD size = 0;
DWORD ret = RegGetValueW(HKEY_CLASSES_ROOT, pszFileType, NULL, RRF_RT_REG_SZ, NULL, NULL, &size);
if (ret == ERROR_SUCCESS)
{
WCHAR *docName = static_cast<WCHAR *>(HeapAlloc(GetProcessHeap(), 0, size));
if (docName)
{
ret = RegGetValueW(HKEY_CLASSES_ROOT, pszFileType, NULL, RRF_RT_REG_SZ, NULL, docName, &size);
if (ret == ERROR_SUCCESS)
{
hr = this->ReturnString(flags, pszOut, pcchOut, docName, strlenW(docName) + 1);
}
else
{
hr = HRESULT_FROM_WIN32(ret);
}
HeapFree(GetProcessHeap(), 0, docName);
}
else
{
hr = E_OUTOFMEMORY;
}
}
else
{
hr = HRESULT_FROM_WIN32(ret);
}
HeapFree(GetProcessHeap(), 0, pszFileType);
return hr;
}
case ASSOCSTR_FRIENDLYAPPNAME:
{
PVOID verinfoW = NULL;
DWORD size, retval = 0;
UINT flen;
WCHAR *bufW;
static const WCHAR translationW[] = L"\\VarFileInfo\\Translation";
static const WCHAR fileDescFmtW[] = L"\\StringFileInfo\\%04x%04x\\FileDescription";
WCHAR fileDescW[41];
hr = this->GetExecutable(pszExtra, path, MAX_PATH, &len);
if (FAILED(hr))
{
return hr;
}
retval = GetFileVersionInfoSizeW(path, &size);
if (!retval)
{
goto get_friendly_name_fail;
}
verinfoW = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, retval);
if (!verinfoW)
{
return E_OUTOFMEMORY;
}
if (!GetFileVersionInfoW(path, 0, retval, verinfoW))
{
goto get_friendly_name_fail;
}
if (VerQueryValueW(verinfoW, translationW, (LPVOID *)&bufW, &flen))
{
UINT i;
DWORD *langCodeDesc = (DWORD *)bufW;
for (i = 0; i < flen / sizeof(DWORD); i++)
{
sprintfW(fileDescW, fileDescFmtW, LOWORD(langCodeDesc[i]), HIWORD(langCodeDesc[i]));
if (VerQueryValueW(verinfoW, fileDescW, (LPVOID *)&bufW, &flen))
{
/* Does strlenW(bufW) == 0 mean we use the filename? */
len = strlenW(bufW) + 1;
TRACE("found FileDescription: %s\n", debugstr_w(bufW));
hr = this->ReturnString(flags, pszOut, pcchOut, bufW, len);
HeapFree(GetProcessHeap(), 0, verinfoW);
return hr;
}
}
}
get_friendly_name_fail:
PathRemoveExtensionW(path);
PathStripPathW(path);
TRACE("using filename: %s\n", debugstr_w(path));
hr = this->ReturnString(flags, pszOut, pcchOut, path, strlenW(path) + 1);
HeapFree(GetProcessHeap(), 0, verinfoW);
return hr;
}
case ASSOCSTR_CONTENTTYPE:
{
static const WCHAR Content_TypeW[] = L"Content Type";
DWORD size = 0;
DWORD ret = RegGetValueW(this->hkeySource, NULL, Content_TypeW, RRF_RT_REG_SZ, NULL, NULL, &size);
if (ret != ERROR_SUCCESS)
{
return HRESULT_FROM_WIN32(ret);
}
WCHAR *contentType = static_cast<WCHAR *>(HeapAlloc(GetProcessHeap(), 0, size));
if (contentType != NULL)
{
ret = RegGetValueW(this->hkeySource, NULL, Content_TypeW, RRF_RT_REG_SZ, NULL, contentType, &size);
if (ret == ERROR_SUCCESS)
{
hr = this->ReturnString(flags, pszOut, pcchOut, contentType, strlenW(contentType) + 1);
}
else
{
hr = HRESULT_FROM_WIN32(ret);
}
HeapFree(GetProcessHeap(), 0, contentType);
}
else
{
hr = E_OUTOFMEMORY;
}
return hr;
}
case ASSOCSTR_DEFAULTICON:
{
static const WCHAR DefaultIconW[] = L"DefaultIcon";
DWORD ret;
DWORD size = 0;
ret = RegGetValueW(this->hkeyProgID, DefaultIconW, NULL, RRF_RT_REG_SZ, NULL, NULL, &size);
if (ret == ERROR_SUCCESS)
{
WCHAR *icon = static_cast<WCHAR *>(HeapAlloc(GetProcessHeap(), 0, size));
if (icon)
{
ret = RegGetValueW(this->hkeyProgID, DefaultIconW, NULL, RRF_RT_REG_SZ, NULL, icon, &size);
if (ret == ERROR_SUCCESS)
{
hr = this->ReturnString(flags, pszOut, pcchOut, icon, strlenW(icon) + 1);
}
else
{
hr = HRESULT_FROM_WIN32(ret);
}
HeapFree(GetProcessHeap(), 0, icon);
}
else
{
hr = HRESULT_FROM_WIN32(ret);
}
}
else
{
hr = HRESULT_FROM_WIN32(ret);
}
return hr;
}
case ASSOCSTR_SHELLEXTENSION:
{
static const WCHAR shellexW[] = L"ShellEx\\";
WCHAR keypath[sizeof(shellexW) / sizeof(shellexW[0]) + 39], guid[39];
CLSID clsid;
HKEY hkey;
hr = CLSIDFromString(pszExtra, &clsid);
if (FAILED(hr))
{
return hr;
}
strcpyW(keypath, shellexW);
strcatW(keypath, pszExtra);
LONG ret = RegOpenKeyExW(this->hkeySource, keypath, 0, KEY_READ, &hkey);
if (ret)
{
return HRESULT_FROM_WIN32(ret);
}
DWORD size = sizeof(guid);
ret = RegGetValueW(hkey, NULL, NULL, RRF_RT_REG_SZ, NULL, guid, &size);
RegCloseKey(hkey);
if (ret)
{
return HRESULT_FROM_WIN32(ret);
}
return this->ReturnString(flags, pszOut, pcchOut, guid, size / sizeof(WCHAR));
}
default:
{
FIXME("assocstr %d unimplemented!\n", str);
return E_NOTIMPL;
}
}
}
/**************************************************************************
* IQueryAssociations_GetKey
*
* Get a file association key from the registry.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assockey [I] Type of key to get (ASSOCKEY enum from "shlwapi.h")
* pszExtra [I] Extra information about the key location
* phkeyOut [O] Destination for the association key
*
* RETURNS
* Success: S_OK. phkeyOut contains a handle to the key.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT STDMETHODCALLTYPE CQueryAssociations::GetKey(
ASSOCF cfFlags,
ASSOCKEY assockey,
LPCWSTR pszExtra,
HKEY *phkeyOut)
{
FIXME("(%p,0x%8x,0x%8x,%s,%p)-stub!\n", this, cfFlags, assockey,
debugstr_w(pszExtra), phkeyOut);
return E_NOTIMPL;
}
/**************************************************************************
* IQueryAssociations_GetData
*
* Get the data for a file association key from the registry.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assocdata [I] Type of data to get (ASSOCDATA enum from "shlwapi.h")
* pszExtra [I] Extra information about the data location
* pvOut [O] Destination for the association key
* pcbOut [I/O] Size of pvOut
*
* RETURNS
* Success: S_OK. pszOut contains the data, pcbOut contains its length.
* Failure: An HRESULT error code indicating the error.
*/
HRESULT STDMETHODCALLTYPE CQueryAssociations::GetData(ASSOCF cfFlags, ASSOCDATA assocdata, LPCWSTR pszExtra, LPVOID pvOut, DWORD *pcbOut)
{
static const WCHAR edit_flags[] = L"EditFlags";
TRACE("(%p,0x%8x,0x%8x,%s,%p,%p)\n", this, cfFlags, assocdata,
debugstr_w(pszExtra), pvOut, pcbOut);
if(cfFlags)
{
FIXME("Unsupported flags: %x\n", cfFlags);
}
switch(assocdata)
{
case ASSOCDATA_EDITFLAGS:
{
if(!this->hkeyProgID)
{
return HRESULT_FROM_WIN32(ERROR_NO_ASSOCIATION);
}
void *data;
DWORD size;
HRESULT hres = this->GetValue(this->hkeyProgID, edit_flags, &data, &size);
if(FAILED(hres))
{
return hres;
}
if (!pcbOut)
{
HeapFree(GetProcessHeap(), 0, data);
return hres;
}
hres = this->ReturnData(pvOut, pcbOut, data, size);
HeapFree(GetProcessHeap(), 0, data);
return hres;
}
default:
{
FIXME("Unsupported ASSOCDATA value: %d\n", assocdata);
return E_NOTIMPL;
}
}
}
/**************************************************************************
* IQueryAssociations_GetEnum
*
* Not yet implemented in native Win32.
*
* PARAMS
* cfFlags [I] ASSOCF_ flags from "shlwapi.h"
* assocenum [I] Type of enum to get (ASSOCENUM enum from "shlwapi.h")
* pszExtra [I] Extra information about the enum location
* riid [I] REFIID to look for
* ppvOut [O] Destination for the interface.
*
* RETURNS
* Success: S_OK.
* Failure: An HRESULT error code indicating the error.
*
* NOTES
* Presumably this function returns an enumerator object.
*/
HRESULT STDMETHODCALLTYPE CQueryAssociations::GetEnum(
ASSOCF cfFlags,
ASSOCENUM assocenum,
LPCWSTR pszExtra,
REFIID riid,
LPVOID *ppvOut)
{
return E_NOTIMPL;
}
HRESULT CQueryAssociations::GetValue(HKEY hkey, const WCHAR *name, void **data, DWORD *data_size)
{
DWORD size;
LONG ret;
ret = RegQueryValueExW(hkey, name, 0, NULL, NULL, &size);
if (ret != ERROR_SUCCESS)
{
return HRESULT_FROM_WIN32(ret);
}
if (!size)
{
return E_FAIL;
}
*data = HeapAlloc(GetProcessHeap(), 0, size);
if (!*data)
{
return E_OUTOFMEMORY;
}
ret = RegQueryValueExW(hkey, name, 0, NULL, (LPBYTE)*data, &size);
if (ret != ERROR_SUCCESS)
{
HeapFree(GetProcessHeap(), 0, *data);
return HRESULT_FROM_WIN32(ret);
}
if(data_size)
{
*data_size = size;
}
return S_OK;
}
HRESULT CQueryAssociations::GetCommand(const WCHAR *extra, WCHAR **command)
{
HKEY hkeyCommand;
HKEY hkeyShell;
HKEY hkeyVerb;
HRESULT hr;
LONG ret;
WCHAR *extra_from_reg = NULL;
WCHAR *filetype;
static const WCHAR commandW[] = L"command";
static const WCHAR shellW[] = L"shell";
/* When looking for file extension it's possible to have a default value
that points to another key that contains 'shell/<verb>/command' subtree. */
hr = this->GetValue(this->hkeySource, NULL, (void**)&filetype, NULL);
if (hr == S_OK)
{
HKEY hkeyFile;
ret = RegOpenKeyExW(HKEY_CLASSES_ROOT, filetype, 0, KEY_READ, &hkeyFile);
HeapFree(GetProcessHeap(), 0, filetype);
if (ret == ERROR_SUCCESS)
{
ret = RegOpenKeyExW(hkeyFile, shellW, 0, KEY_READ, &hkeyShell);
RegCloseKey(hkeyFile);
}
else
{
ret = RegOpenKeyExW(this->hkeySource, shellW, 0, KEY_READ, &hkeyShell);
}
}
else
{
ret = RegOpenKeyExW(this->hkeySource, shellW, 0, KEY_READ, &hkeyShell);
}
if (ret)
{
return HRESULT_FROM_WIN32(ret);
}
if (!extra)
{
/* check for default verb */
hr = this->GetValue(hkeyShell, NULL, (void**)&extra_from_reg, NULL);
if (FAILED(hr))
{
/* no default verb, try first subkey */
DWORD max_subkey_len;
ret = RegQueryInfoKeyW(hkeyShell, NULL, NULL, NULL, NULL, &max_subkey_len, NULL, NULL, NULL, NULL, NULL, NULL);
if (ret)
{
RegCloseKey(hkeyShell);
return HRESULT_FROM_WIN32(ret);
}
max_subkey_len++;
extra_from_reg = static_cast<WCHAR*>(HeapAlloc(GetProcessHeap(), 0, max_subkey_len * sizeof(WCHAR)));
if (!extra_from_reg)
{
RegCloseKey(hkeyShell);
return E_OUTOFMEMORY;
}
ret = RegEnumKeyExW(hkeyShell, 0, extra_from_reg, &max_subkey_len, NULL, NULL, NULL, NULL);
if (ret)
{
HeapFree(GetProcessHeap(), 0, extra_from_reg);
RegCloseKey(hkeyShell);
return HRESULT_FROM_WIN32(ret);
}
}
extra = extra_from_reg;
}
/* open verb subkey */
ret = RegOpenKeyExW(hkeyShell, extra, 0, KEY_READ, &hkeyVerb);
HeapFree(GetProcessHeap(), 0, extra_from_reg);
RegCloseKey(hkeyShell);
if (ret)
{
return HRESULT_FROM_WIN32(ret);
}
/* open command subkey */
ret = RegOpenKeyExW(hkeyVerb, commandW, 0, KEY_READ, &hkeyCommand);
RegCloseKey(hkeyVerb);
if (ret)
{
return HRESULT_FROM_WIN32(ret);
}
hr = this->GetValue(hkeyCommand, NULL, (void**)command, NULL);
RegCloseKey(hkeyCommand);
return hr;
}
HRESULT CQueryAssociations::GetExecutable(LPCWSTR pszExtra, LPWSTR path, DWORD pathlen, DWORD *len)
{
WCHAR *pszCommand;
WCHAR *pszStart;
WCHAR *pszEnd;
HRESULT hr = this->GetCommand(pszExtra, &pszCommand);
if (FAILED(hr))
{
return hr;
}
DWORD expLen = ExpandEnvironmentStringsW(pszCommand, NULL, 0);
if (expLen > 0)
{
expLen++;
WCHAR *buf = static_cast<WCHAR *>(HeapAlloc(GetProcessHeap(), 0, expLen * sizeof(WCHAR)));
ExpandEnvironmentStringsW(pszCommand, buf, expLen);
HeapFree(GetProcessHeap(), 0, pszCommand);
pszCommand = buf;
}
/* cleanup pszCommand */
if (pszCommand[0] == '"')
{
pszStart = pszCommand + 1;
pszEnd = strchrW(pszStart, '"');
if (pszEnd)
{
*pszEnd = 0;
}
*len = SearchPathW(NULL, pszStart, NULL, pathlen, path, NULL);
}
else
{
pszStart = pszCommand;
for (pszEnd = pszStart; (pszEnd = strchrW(pszEnd, ' ')); pszEnd++)
{
WCHAR c = *pszEnd;
*pszEnd = 0;
if ((*len = SearchPathW(NULL, pszStart, NULL, pathlen, path, NULL)))
{
break;
}
*pszEnd = c;
}
if (!pszEnd)
{
*len = SearchPathW(NULL, pszStart, NULL, pathlen, path, NULL);
}
}
HeapFree(GetProcessHeap(), 0, pszCommand);
if (!*len)
{
return HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
}
return S_OK;
}
HRESULT CQueryAssociations::ReturnData(void *out, DWORD *outlen, const void *data, DWORD datalen)
{
if (out)
{
if (*outlen < datalen)
{
*outlen = datalen;
return E_POINTER;
}
*outlen = datalen;
memcpy(out, data, datalen);
return S_OK;
}
else
{
*outlen = datalen;
return S_FALSE;
}
}
HRESULT CQueryAssociations::ReturnString(ASSOCF flags, LPWSTR out, DWORD *outlen, LPCWSTR data, DWORD datalen)
{
HRESULT hr = S_OK;
DWORD len;
TRACE("flags=0x%08x, data=%s\n", flags, debugstr_w(data));
if (!out)
{
*outlen = datalen;
return S_FALSE;
}
if (*outlen < datalen)
{
if (flags & ASSOCF_NOTRUNCATE)
{
len = 0;
if (*outlen > 0) out[0] = 0;
hr = E_POINTER;
}
else
{
len = min(*outlen, datalen);
hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
}
*outlen = datalen;
}
else
{
len = datalen;
}
if (len)
{
memcpy(out, data, len*sizeof(WCHAR));
}
return hr;
}