gecko/toolkit/components/parentalcontrols/nsParentalControlsServiceWin.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode:nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Jim Mathies <jmathies@mozilla.com>.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsParentalControlsServiceWin.h"
#include "nsString.h"
#include "nsIArray.h"
#include "nsIWidget.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIFile.h"
#include "nsILocalFileWin.h"
#include "nsArrayUtils.h"
#include "nsIXULAppInfo.h"
static const CLSID CLSID_WinParentalControls = {0xE77CC89B,0x7401,0x4C04,{0x8C,0xED,0x14,0x9D,0xB3,0x5A,0xDD,0x04}};
static const IID IID_IWinParentalControls = {0x28B4D88B,0xE072,0x49E6,{0x80,0x4D,0x26,0xED,0xBE,0x21,0xA7,0xB9}};
NS_IMPL_ISUPPORTS1(nsParentalControlsServiceWin, nsIParentalControlsService)
static HINSTANCE gAdvAPIDLLInst = NULL;
typedef ULONG (STDMETHODCALLTYPE *MyEventWrite)(
REGHANDLE RegHandle,
PCEVENT_DESCRIPTOR EventDescriptor,
ULONG UserDataCount,
PEVENT_DATA_DESCRIPTOR UserData);
typedef ULONG (STDMETHODCALLTYPE *MyEventRegister)(
LPCGUID ProviderId,
PENABLECALLBACK EnableCallback,
PVOID CallbackContext,
PREGHANDLE RegHandle);
typedef ULONG (STDMETHODCALLTYPE *MyEventUnregister)(
REGHANDLE RegHandle);
MyEventWrite gEventWrite = NULL;
MyEventRegister gEventRegister = NULL;
MyEventUnregister gEventUnregister = NULL;
nsParentalControlsServiceWin::nsParentalControlsServiceWin() :
mPC(nsnull)
, mEnabled(false)
, mProvider(nsnull)
{
HRESULT hr;
CoInitialize(NULL);
hr = CoCreateInstance(CLSID_WinParentalControls, NULL, CLSCTX_INPROC,
IID_IWinParentalControls, (void**)&mPC);
if (FAILED(hr))
return;
nsRefPtr<IWPCSettings> wpcs;
if (FAILED(mPC->GetUserSettings(NULL, getter_AddRefs(wpcs)))) {
// Not available on this os or not enabled for this user account or we're running as admin
mPC->Release();
mPC = nsnull;
return;
}
DWORD settings = 0;
wpcs->GetRestrictions(&settings);
if (settings) { // WPCFLAG_NO_RESTRICTION = 0
gAdvAPIDLLInst = ::LoadLibrary("Advapi32.dll");
if(gAdvAPIDLLInst)
{
gEventWrite = (MyEventWrite) GetProcAddress(gAdvAPIDLLInst, "EventWrite");
gEventRegister = (MyEventRegister) GetProcAddress(gAdvAPIDLLInst, "EventRegister");
gEventUnregister = (MyEventUnregister) GetProcAddress(gAdvAPIDLLInst, "EventUnregister");
}
mEnabled = true;
}
}
nsParentalControlsServiceWin::~nsParentalControlsServiceWin()
{
if (mPC)
mPC->Release();
if (gEventUnregister && mProvider)
gEventUnregister(mProvider);
if (gAdvAPIDLLInst)
::FreeLibrary(gAdvAPIDLLInst);
}
//------------------------------------------------------------------------
NS_IMETHODIMP
nsParentalControlsServiceWin::GetParentalControlsEnabled(bool *aResult)
{
*aResult = false;
if (mEnabled)
*aResult = true;
return NS_OK;
}
NS_IMETHODIMP
nsParentalControlsServiceWin::GetBlockFileDownloadsEnabled(bool *aResult)
{
*aResult = false;
if (!mEnabled)
return NS_ERROR_NOT_AVAILABLE;
nsRefPtr<IWPCWebSettings> wpcws;
if (SUCCEEDED(mPC->GetWebSettings(NULL, getter_AddRefs(wpcws)))) {
DWORD settings = 0;
wpcws->GetSettings(&settings);
if (settings == WPCFLAG_WEB_SETTING_DOWNLOADSBLOCKED)
*aResult = true;
}
return NS_OK;
}
NS_IMETHODIMP
nsParentalControlsServiceWin::GetLoggingEnabled(bool *aResult)
{
*aResult = false;
if (!mEnabled)
return NS_ERROR_NOT_AVAILABLE;
// Check the general purpose logging flag
nsRefPtr<IWPCSettings> wpcs;
if (SUCCEEDED(mPC->GetUserSettings(NULL, getter_AddRefs(wpcs)))) {
BOOL enabled = FALSE;
wpcs->IsLoggingRequired(&enabled);
if (enabled)
*aResult = true;
}
return NS_OK;
}
// Post a log event to the system
NS_IMETHODIMP
nsParentalControlsServiceWin::Log(PRInt16 aEntryType, bool blocked, nsIURI *aSource, nsIFile *aTarget)
{
if (!mEnabled)
return NS_ERROR_NOT_AVAILABLE;
NS_ENSURE_ARG_POINTER(aSource);
// Confirm we should be logging
bool enabled;
GetLoggingEnabled(&enabled);
if (!enabled)
return NS_ERROR_NOT_AVAILABLE;
// Register a Vista log event provider associated with the parental controls channel.
if (!mProvider) {
if (!gEventRegister)
return NS_ERROR_NOT_AVAILABLE;
if (gEventRegister(&WPCPROV, NULL, NULL, &mProvider) != ERROR_SUCCESS)
return NS_ERROR_OUT_OF_MEMORY;
}
switch(aEntryType) {
case ePCLog_URIVisit:
// Not needed, Vista's web content filter handles this for us
break;
case ePCLog_FileDownload:
LogFileDownload(blocked, aSource, aTarget);
break;
default:
break;
}
return NS_OK;
}
// Override a single URI
NS_IMETHODIMP
nsParentalControlsServiceWin::RequestURIOverride(nsIURI *aTarget, nsIInterfaceRequestor *aWindowContext, bool *_retval)
{
*_retval = false;
if (!mEnabled)
return NS_ERROR_NOT_AVAILABLE;
NS_ENSURE_ARG_POINTER(aTarget);
nsCAutoString spec;
aTarget->GetSpec(spec);
if (spec.IsEmpty())
return NS_ERROR_INVALID_ARG;
HWND hWnd = nsnull;
// If we have a native window, use its handle instead
nsCOMPtr<nsIWidget> widget(do_GetInterface(aWindowContext));
if (widget)
hWnd = (HWND)widget->GetNativeData(NS_NATIVE_WINDOW);
if (hWnd == nsnull)
hWnd = GetDesktopWindow();
BOOL ret;
nsRefPtr<IWPCWebSettings> wpcws;
if (SUCCEEDED(mPC->GetWebSettings(NULL, getter_AddRefs(wpcws)))) {
wpcws->RequestURLOverride(hWnd, NS_ConvertUTF8toUTF16(spec).get(),
0, NULL, &ret);
*_retval = ret;
}
return NS_OK;
}
// Override a web page
NS_IMETHODIMP
nsParentalControlsServiceWin::RequestURIOverrides(nsIArray *aTargets, nsIInterfaceRequestor *aWindowContext, bool *_retval)
{
*_retval = false;
if (!mEnabled)
return NS_ERROR_NOT_AVAILABLE;
NS_ENSURE_ARG_POINTER(aTargets);
PRUint32 arrayLength = 0;
aTargets->GetLength(&arrayLength);
if (!arrayLength)
return NS_ERROR_INVALID_ARG;
if (arrayLength == 1) {
nsCOMPtr<nsIURI> uri = do_QueryElementAt(aTargets, 0);
if (!uri)
return NS_ERROR_INVALID_ARG;
return RequestURIOverride(uri, aWindowContext, _retval);
}
HWND hWnd = nsnull;
// If we have a native window, use its handle instead
nsCOMPtr<nsIWidget> widget(do_GetInterface(aWindowContext));
if (widget)
hWnd = (HWND)widget->GetNativeData(NS_NATIVE_WINDOW);
if (hWnd == nsnull)
hWnd = GetDesktopWindow();
// The first entry should be the root uri
nsCAutoString rootSpec;
nsCOMPtr<nsIURI> rootURI = do_QueryElementAt(aTargets, 0);
if (!rootURI)
return NS_ERROR_INVALID_ARG;
rootURI->GetSpec(rootSpec);
if (rootSpec.IsEmpty())
return NS_ERROR_INVALID_ARG;
// Allocate an array of sub uri
PRInt32 count = arrayLength - 1;
nsAutoArrayPtr<LPCWSTR> arrUrls(new LPCWSTR[count]);
if (!arrUrls)
return NS_ERROR_OUT_OF_MEMORY;
PRUint32 uriIdx = 0, idx;
for (idx = 1; idx < arrayLength; idx++)
{
nsCOMPtr<nsIURI> uri = do_QueryElementAt(aTargets, idx);
if (!uri)
continue;
nsCAutoString subURI;
if (NS_FAILED(uri->GetSpec(subURI)))
continue;
arrUrls[uriIdx] = (LPCWSTR)UTF8ToNewUnicode(subURI); // allocation
if (!arrUrls[uriIdx])
continue;
uriIdx++;
}
if (!uriIdx)
return NS_ERROR_INVALID_ARG;
BOOL ret;
nsRefPtr<IWPCWebSettings> wpcws;
if (SUCCEEDED(mPC->GetWebSettings(NULL, getter_AddRefs(wpcws)))) {
wpcws->RequestURLOverride(hWnd, NS_ConvertUTF8toUTF16(rootSpec).get(),
uriIdx, (LPCWSTR*)arrUrls.get(), &ret);
*_retval = ret;
}
// Free up the allocated strings in our array
for (idx = 0; idx < uriIdx; idx++)
NS_Free((void*)arrUrls[idx]);
return NS_OK;
}
//------------------------------------------------------------------------
// Sends a file download event to the Vista Event Log
void
nsParentalControlsServiceWin::LogFileDownload(bool blocked, nsIURI *aSource, nsIFile *aTarget)
{
nsCAutoString curi;
if (!gEventWrite)
return;
// Note, EventDataDescCreate is a macro defined in the headers, not a function
aSource->GetSpec(curi);
nsAutoString uri = NS_ConvertUTF8toUTF16(curi);
// Get the name of the currently running process
nsCOMPtr<nsIXULAppInfo> appInfo = do_GetService("@mozilla.org/xre/app-info;1");
nsCAutoString asciiAppName;
if (appInfo)
appInfo->GetName(asciiAppName);
nsAutoString appName = NS_ConvertUTF8toUTF16(asciiAppName);
static const WCHAR fill[] = L"";
// See wpcevent.h and msdn for event formats
EVENT_DATA_DESCRIPTOR eventData[WPC_ARGS_FILEDOWNLOADEVENT_CARGS];
DWORD dwBlocked = blocked;
EventDataDescCreate(&eventData[WPC_ARGS_FILEDOWNLOADEVENT_URL], (const void*)uri.get(),
((ULONG)uri.Length()+1)*sizeof(WCHAR));
EventDataDescCreate(&eventData[WPC_ARGS_FILEDOWNLOADEVENT_APPNAME], (const void*)appName.get(),
((ULONG)appName.Length()+1)*sizeof(WCHAR));
EventDataDescCreate(&eventData[WPC_ARGS_FILEDOWNLOADEVENT_VERSION], (const void*)fill, sizeof(fill));
EventDataDescCreate(&eventData[WPC_ARGS_FILEDOWNLOADEVENT_BLOCKED], (const void*)&dwBlocked,
sizeof(dwBlocked));
nsCOMPtr<nsILocalFileWin> local(do_QueryInterface(aTarget)); // May be null
if (local) {
nsAutoString path;
local->GetCanonicalPath(path);
EventDataDescCreate(&eventData[WPC_ARGS_FILEDOWNLOADEVENT_PATH], (const void*)path.get(),
((ULONG)path.Length()+1)*sizeof(WCHAR));
}
else {
EventDataDescCreate(&eventData[WPC_ARGS_FILEDOWNLOADEVENT_PATH], (const void*)fill, sizeof(fill));
}
gEventWrite(mProvider, &WPCEVENT_WEB_FILEDOWNLOAD, ARRAYSIZE(eventData), eventData);
}