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- check if group policy is active

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- in this case check if the shell extension has been registered as approved and only accept it if it is listed

svn path=/trunk/; revision=30122
This commit is contained in:
Johannes Anderwald 2007-11-04 17:07:40 +00:00
parent c6cd8c67b4
commit 59adf06968
1 changed files with 57 additions and 9 deletions
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66
reactos/dll/win32/shell32/shv_item_cmenu.c
View file

@ -80,7 +80,7 @@ typedef struct
} ItemCmImpl;
UINT
SH_EnumerateDynamicContextHandlerForKey(LPWSTR szFileClass, ItemCmImpl *This, IDataObject * pDataObj);
SH_EnumerateDynamicContextHandlerForKey(LPWSTR szFileClass, ItemCmImpl *This, IDataObject * pDataObj, DWORD bGroupPolicyActive);
WCHAR *build_paths_list(LPCWSTR wszBasePath, int cidl, LPCITEMIDLIST *pidls);
WCHAR *strdupW(LPWSTR str);
static const IContextMenu2Vtbl cmvt;
@ -310,9 +310,22 @@ SH_LoadContextMenuHandlers(ItemCmImpl *This, IDataObject * pDataObj, HMENU hMenu
UINT idCmdFirst = 0x6000;
UINT idCmdLast = 0xFFF0;
PDynamicShellEntry curEntry;
DWORD bGroupPolicyActive = FALSE;
DWORD dwSize;
static WCHAR szAny[] = { '*',0};
SH_EnumerateDynamicContextHandlerForKey(szAny, This, pDataObj);
dwSize = sizeof(DWORD);
RegGetValueW(HKEY_CURRENT_USER,
L"Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer",
L"EnforceShellExtensionSecurity",
RRF_RT_DWORD,
NULL,
&bGroupPolicyActive,
&dwSize);
SH_EnumerateDynamicContextHandlerForKey(szAny, This, pDataObj, bGroupPolicyActive);
for (i = 0; i < This->cidl; i++)
{
@ -326,7 +339,7 @@ SH_LoadContextMenuHandlers(ItemCmImpl *This, IDataObject * pDataObj, HMENU hMenu
if (hr == S_OK)
{
memcpy(&buffer[6], pwszCLSID, 38 * sizeof(WCHAR));
SH_EnumerateDynamicContextHandlerForKey(buffer, This, pDataObj);
SH_EnumerateDynamicContextHandlerForKey(buffer, This, pDataObj, bGroupPolicyActive);
}
}
@ -335,7 +348,7 @@ SH_LoadContextMenuHandlers(ItemCmImpl *This, IDataObject * pDataObj, HMENU hMenu
ebuf[0] = L'.';
buffer[0] = L'\0';
if (MultiByteToWideChar(CP_ACP, 0, ebuf, -1, buffer, 111))
SH_EnumerateDynamicContextHandlerForKey(buffer, This, pDataObj);
SH_EnumerateDynamicContextHandlerForKey(buffer, This, pDataObj, bGroupPolicyActive);
}
}
TRACE("-- done loading\n");
@ -1159,7 +1172,7 @@ SH_LoadDynamicContextMenuHandler(HKEY hKey, const CLSID * szClass, ItemCmImpl *T
}
UINT
SH_EnumerateDynamicContextHandlerForKey(const LPWSTR szFileClass, ItemCmImpl *This, IDataObject * pDataObj)
SH_EnumerateDynamicContextHandlerForKey(const LPWSTR szFileClass, ItemCmImpl *This, IDataObject * pDataObj, DWORD bGroupPolicyActive)
{
HKEY hKey;
WCHAR szKey[MAX_PATH] = {0};
@ -1191,18 +1204,53 @@ SH_EnumerateDynamicContextHandlerForKey(const LPWSTR szFileClass, ItemCmImpl *Th
if (res == ERROR_SUCCESS)
{
hResult = CLSIDFromString(szName, &clsid);
if (hResult != NOERROR)
if (hResult != S_OK)
{
dwName = MAX_PATH;
if (RegGetValueW(hKey, szName, NULL, RRF_RT_REG_SZ, NULL, szKey, &dwName) == ERROR_SUCCESS)
{
hResult = CLSIDFromString(szKey, &clsid);
if (CLSIDFromString(szKey, &clsid) == S_OK)
{
if (bGroupPolicyActive)
{
if (RegGetValueW(HKEY_LOCAL_MACHINE,
L"Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved",
szKey,
RRF_RT_REG_SZ,
NULL,
NULL,
&dwName) == ERROR_SUCCESS)
{
SH_LoadDynamicContextMenuHandler(hKey, &clsid, This, pDataObj);
}
}
else
{
SH_LoadDynamicContextMenuHandler(hKey, &clsid, This, pDataObj);
}
}
}
}
TRACE("hResult %x szKey %s name %s\n",hResult, debugstr_w(szKey), debugstr_w(szName));
if (hResult == S_OK)
{
SH_LoadDynamicContextMenuHandler(hKey, &clsid, This, pDataObj);
if (bGroupPolicyActive)
{
if (RegGetValueW(HKEY_LOCAL_MACHINE,
L"Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved",
szKey,
RRF_RT_REG_SZ,
NULL,
NULL,
&dwName) == ERROR_SUCCESS)
{
SH_LoadDynamicContextMenuHandler(hKey, &clsid, This, pDataObj);
}
}
else
{
SH_LoadDynamicContextMenuHandler(hKey, &clsid, This, pDataObj);
}
}
}
dwIndex++;