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chrome_frame_activex_base.h
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_FRAME_CHROME_FRAME_ACTIVEX_BASE_H_
#define CHROME_FRAME_CHROME_FRAME_ACTIVEX_BASE_H_
#include <atlbase.h>
#include <atlcom.h>
#include <atlctl.h>
#include <exdisp.h>
#include <wininet.h>
#include <shdeprecated.h> // for IBrowserService2
#include <shlguid.h>
#include <set>
#include <string>
#include <vector>
#include "base/metrics/histogram.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "base/win/scoped_bstr.h"
#include "base/win/scoped_comptr.h"
#include "base/win/scoped_variant.h"
#include "grit/chrome_frame_resources.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/common/url_constants.h"
#include "chrome_frame/chrome_frame_plugin.h"
#include "chrome_frame/chrome_tab.h"
#include "chrome_frame/com_message_event.h"
#include "chrome_frame/com_type_info_holder.h"
#include "chrome_frame/simple_resource_loader.h"
#include "chrome_frame/urlmon_url_request.h"
#include "chrome_frame/urlmon_url_request_private.h"
#include "chrome_frame/utils.h"
#include "grit/generated_resources.h"
#include "net/cookies/cookie_monster.h"
// Connection point class to support firing IChromeFrameEvents (dispinterface).
template<class T>
class ATL_NO_VTABLE ProxyDIChromeFrameEvents
: public IConnectionPointImpl<T, &DIID_DIChromeFrameEvents> {
public:
void FireMethodWithParams(ChromeFrameEventDispId dispid,
const VARIANT* params, size_t num_params) {
T* me = static_cast<T*>(this);
// We need to copy the whole vector and AddRef the sinks in case
// some would get disconnected as we fire methods. Note that this is not
// a threading issue, but a re-entrance issue, because the connection
// can be affected by the implementation of the sinks receiving the event.
me->Lock();
std::vector< base::win::ScopedComPtr<IUnknown> > sink_array(
m_vec.GetSize());
for (int connection = 0; connection < m_vec.GetSize(); ++connection)
sink_array[connection] = m_vec.GetAt(connection);
me->Unlock();
for (size_t sink = 0; sink < sink_array.size(); ++sink) {
DIChromeFrameEvents* events =
static_cast<DIChromeFrameEvents*>(sink_array[sink].get());
if (events) {
DISPPARAMS disp_params = {
const_cast<VARIANT*>(params),
NULL,
num_params,
0};
HRESULT hr = events->Invoke(static_cast<DISPID>(dispid),
DIID_DIChromeFrameEvents,
LOCALE_USER_DEFAULT, DISPATCH_METHOD,
&disp_params, NULL, NULL, NULL);
DLOG_IF(ERROR, FAILED(hr)) << "invoke(" << dispid << ") failed" <<
base::StringPrintf("0x%08X", hr);
}
}
}
void FireMethodWithParam(ChromeFrameEventDispId dispid,
const VARIANT& param) {
FireMethodWithParams(dispid, ¶m, 1);
}
void Fire_onload(IDispatch* event) {
VARIANT var = { VT_DISPATCH };
var.pdispVal = event;
FireMethodWithParam(CF_EVENT_DISPID_ONLOAD, var);
}
void Fire_onloaderror(IDispatch* event) {
VARIANT var = { VT_DISPATCH };
var.pdispVal = event;
FireMethodWithParam(CF_EVENT_DISPID_ONLOADERROR, var);
}
void Fire_onmessage(IDispatch* event) {
VARIANT var = { VT_DISPATCH };
var.pdispVal = event;
FireMethodWithParam(CF_EVENT_DISPID_ONMESSAGE, var);
}
void Fire_onreadystatechanged(long readystate) { // NOLINT
VARIANT var = { VT_I4 };
var.lVal = readystate;
FireMethodWithParam(CF_EVENT_DISPID_ONREADYSTATECHANGED, var);
}
void Fire_onprivatemessage(IDispatch* event, BSTR target) {
// Arguments in reverse order to the function declaration, because
// that's what DISPPARAMS requires.
VARIANT args[2] = { { VT_BSTR, }, {VT_DISPATCH, } };
args[0].bstrVal = target;
args[1].pdispVal = event;
FireMethodWithParams(CF_EVENT_DISPID_ONPRIVATEMESSAGE,
args,
arraysize(args));
}
void Fire_onchannelerror() { // NOLINT
FireMethodWithParams(CF_EVENT_DISPID_ONCHANNELERROR, NULL, 0);
}
void Fire_onclose() { // NOLINT
FireMethodWithParams(CF_EVENT_DISPID_ONCLOSE, NULL, 0);
}
};
extern bool g_first_launch_by_process_;
namespace chrome_frame {
// Implemented outside this file so that the header doesn't include
// automation_messages.h.
std::string ActiveXCreateUrl(const GURL& parsed_url,
const AttachExternalTabParams& params);
int GetDisposition(const AttachExternalTabParams& params);
void GetMiniContextMenuData(UINT cmd,
const MiniContextMenuParams& params,
GURL* referrer,
GURL* url);
} // namespace chrome_frame
// Common implementation for ActiveX and Active Document
template <class T, const CLSID& class_id>
class ATL_NO_VTABLE ChromeFrameActivexBase : // NOLINT
public CComObjectRootEx<CComMultiThreadModel>,
public IOleControlImpl<T>,
public IOleObjectImpl<T>,
public IOleInPlaceActiveObjectImpl<T>,
public IViewObjectExImpl<T>,
public IOleInPlaceObjectWindowlessImpl<T>,
public ISupportErrorInfo,
public IQuickActivateImpl<T>,
public com_util::IProvideClassInfo2Impl<class_id,
DIID_DIChromeFrameEvents>,
public com_util::IDispatchImpl<IChromeFrame>,
public IConnectionPointContainerImpl<T>,
public ProxyDIChromeFrameEvents<T>,
public IPropertyNotifySinkCP<T>,
public CComCoClass<T, &class_id>,
public CComControl<T>,
public ChromeFramePlugin<T> {
protected:
typedef std::set<base::win::ScopedComPtr<IDispatch> > EventHandlers;
typedef ChromeFrameActivexBase<T, class_id> BasePlugin;
public:
ChromeFrameActivexBase()
: ready_state_(READYSTATE_UNINITIALIZED),
url_fetcher_(new UrlmonUrlRequestManager()),
failed_to_fetch_in_place_frame_(false),
draw_sad_tab_(false) {
m_bWindowOnly = TRUE;
url_fetcher_->set_container(static_cast<IDispatch*>(this));
}
~ChromeFrameActivexBase() {
url_fetcher_->set_container(NULL);
}
DECLARE_OLEMISC_STATUS(OLEMISC_RECOMPOSEONRESIZE | OLEMISC_CANTLINKINSIDE |
OLEMISC_INSIDEOUT | OLEMISC_ACTIVATEWHENVISIBLE |
OLEMISC_SETCLIENTSITEFIRST)
DECLARE_NOT_AGGREGATABLE(T)
BEGIN_COM_MAP(ChromeFrameActivexBase)
COM_INTERFACE_ENTRY(IChromeFrame)
COM_INTERFACE_ENTRY(IDispatch)
COM_INTERFACE_ENTRY(IViewObjectEx)
COM_INTERFACE_ENTRY(IViewObject2)
COM_INTERFACE_ENTRY(IViewObject)
COM_INTERFACE_ENTRY(IOleInPlaceObjectWindowless)
COM_INTERFACE_ENTRY(IOleInPlaceObject)
COM_INTERFACE_ENTRY2(IOleWindow, IOleInPlaceObjectWindowless)
COM_INTERFACE_ENTRY(IOleInPlaceActiveObject)
COM_INTERFACE_ENTRY(IOleControl)
COM_INTERFACE_ENTRY(IOleObject)
COM_INTERFACE_ENTRY(ISupportErrorInfo)
COM_INTERFACE_ENTRY(IQuickActivate)
COM_INTERFACE_ENTRY(IProvideClassInfo)
COM_INTERFACE_ENTRY(IProvideClassInfo2)
COM_INTERFACE_ENTRY(IConnectionPointContainer)
COM_INTERFACE_ENTRY_FUNC_BLIND(0, InterfaceNotSupported)
END_COM_MAP()
BEGIN_CONNECTION_POINT_MAP(T)
CONNECTION_POINT_ENTRY(IID_IPropertyNotifySink)
CONNECTION_POINT_ENTRY(DIID_DIChromeFrameEvents)
END_CONNECTION_POINT_MAP()
BEGIN_MSG_MAP(ChromeFrameActivexBase)
MESSAGE_HANDLER(WM_CREATE, OnCreate)
MESSAGE_HANDLER(WM_DOWNLOAD_IN_HOST, OnDownloadRequestInHost)
MESSAGE_HANDLER(WM_DESTROY, OnDestroy)
CHAIN_MSG_MAP(ChromeFramePlugin<T>)
CHAIN_MSG_MAP(CComControl<T>)
DEFAULT_REFLECTION_HANDLER()
END_MSG_MAP()
// IViewObjectEx
DECLARE_VIEW_STATUS(VIEWSTATUS_SOLIDBKGND | VIEWSTATUS_OPAQUE)
inline HRESULT IViewObject_Draw(DWORD draw_aspect, LONG index,
void* aspect_info, DVTARGETDEVICE* ptd, HDC info_dc, HDC dc,
LPCRECTL bounds, LPCRECTL win_bounds) {
// ATL ASSERTs if dwDrawAspect is DVASPECT_DOCPRINT, so we cheat.
DWORD aspect = draw_aspect;
if (aspect == DVASPECT_DOCPRINT)
aspect = DVASPECT_CONTENT;
return CComControl<T>::IViewObject_Draw(aspect, index, aspect_info, ptd,
info_dc, dc, bounds, win_bounds);
}
DECLARE_PROTECT_FINAL_CONSTRUCT()
void SetResourceModule() {
SimpleResourceLoader* loader_instance = SimpleResourceLoader::GetInstance();
DCHECK(loader_instance);
HMODULE res_dll = loader_instance->GetResourceModuleHandle();
_AtlBaseModule.SetResourceInstance(res_dll);
}
HRESULT FinalConstruct() {
SetResourceModule();
if (!Initialize())
return E_OUTOFMEMORY;
// Set to true if this is the first launch by this process.
// Used to perform one time tasks.
if (g_first_launch_by_process_) {
g_first_launch_by_process_ = false;
UMA_HISTOGRAM_CUSTOM_COUNTS("ChromeFrame.IEVersion",
GetIEVersion(),
IE_INVALID,
IE_10,
IE_10 + 1);
}
return S_OK;
}
void FinalRelease() {
Uninitialize();
}
void ResetUrlRequestManager() {
url_fetcher_.reset(new UrlmonUrlRequestManager());
}
static HRESULT WINAPI InterfaceNotSupported(void* pv, REFIID riid, void** ppv,
DWORD dw) {
#ifndef NDEBUG
wchar_t buffer[64] = {0};
::StringFromGUID2(riid, buffer, arraysize(buffer));
DVLOG(1) << "E_NOINTERFACE: " << buffer;
#endif
return E_NOINTERFACE;
}
// ISupportsErrorInfo
STDMETHOD(InterfaceSupportsErrorInfo)(REFIID riid) {
static const IID* interfaces[] = {
&IID_IChromeFrame,
&IID_IDispatch
};
for (int i = 0; i < arraysize(interfaces); ++i) {
if (InlineIsEqualGUID(*interfaces[i], riid))
return S_OK;
}
return S_FALSE;
}
// Called to draw our control when chrome hasn't been initialized.
virtual HRESULT OnDraw(ATL_DRAWINFO& draw_info) { // NOLINT
if (NULL == draw_info.prcBounds) {
NOTREACHED();
return E_FAIL;
}
if (draw_sad_tab_) {
// TODO(tommi): Draw a proper sad tab.
RECT rc = {0};
if (draw_info.prcBounds) {
rc.top = draw_info.prcBounds->top;
rc.bottom = draw_info.prcBounds->bottom;
rc.left = draw_info.prcBounds->left;
rc.right = draw_info.prcBounds->right;
} else {
GetClientRect(&rc);
}
::DrawTextA(draw_info.hdcDraw, ":-(", -1, &rc,
DT_CENTER | DT_VCENTER | DT_SINGLELINE);
} else {
// Don't draw anything.
}
return S_OK;
}
// Used to setup the document_url_ member needed for completing navigation.
// Create external tab (possibly in incognito mode).
HRESULT IOleObject_SetClientSite(IOleClientSite* client_site) {
// If we currently have a document site pointer, release it.
doc_site_.Release();
if (client_site) {
doc_site_.QueryFrom(client_site);
}
if (client_site == NULL) {
in_place_frame_.Release();
}
return CComControlBase::IOleObject_SetClientSite(client_site);
}
bool HandleContextMenuCommand(UINT cmd, const MiniContextMenuParams& params) {
if (cmd == IDC_ABOUT_CHROME_FRAME) {
int tab_handle = automation_client_->tab()->handle();
HostNavigate(GURL("about:version"), GURL(), NEW_WINDOW);
return true;
} else {
switch (cmd) {
case IDS_CONTENT_CONTEXT_SAVEAUDIOAS:
case IDS_CONTENT_CONTEXT_SAVEVIDEOAS:
case IDS_CONTENT_CONTEXT_SAVEIMAGEAS:
case IDS_CONTENT_CONTEXT_SAVELINKAS: {
GURL referrer, url;
chrome_frame::GetMiniContextMenuData(cmd, params, &referrer, &url);
DoFileDownloadInIE(UTF8ToWide(url.spec()).c_str());
return true;
}
case IDC_PRINT: {
automation_client_->PrintTab();
return true;
}
}
}
return false;
}
// Should connections initiated by this class try to block
// responses served with the X-Frame-Options header?
// ActiveX controls genereally will want to do this,
// returning true, while true top-level documents
// (ActiveDocument servers) will not. Your specialization
// of this template should implement this method based on how
// it "feels" from a security perspective. If it's hosted in another
// scriptable document, return true, else false.
//
// The base implementation returns true unless we are in privileged
// mode, in which case we always trust our container so we return false.
bool is_frame_busting_enabled() const {
return !is_privileged();
}
static void BringWebBrowserWindowToTop(IWebBrowser2* web_browser2) {
DCHECK(web_browser2);
if (web_browser2) {
web_browser2->put_Visible(VARIANT_TRUE);
HWND ie_window = NULL;
web_browser2->get_HWND(reinterpret_cast<long*>(&ie_window));
::BringWindowToTop(ie_window);
}
}
protected:
virtual void GetProfilePath(const std::wstring& profile_name,
FilePath* profile_path) {
bool is_IE = (lstrcmpi(profile_name.c_str(), kIexploreProfileName) == 0) ||
(lstrcmpi(profile_name.c_str(), kRundllProfileName) == 0);
// Browsers without IDeleteBrowsingHistory in non-priv mode
// have their profiles moved into "Temporary Internet Files".
if (is_IE && GetIEVersion() < IE_8) {
*profile_path = GetIETemporaryFilesFolder();
*profile_path = profile_path->Append(L"Google Chrome Frame");
} else {
ChromeFramePlugin::GetProfilePath(profile_name, profile_path);
}
DVLOG(1) << __FUNCTION__ << ": " << profile_path->value();
}
void OnLoad(const GURL& url) {
if (ready_state_ < READYSTATE_COMPLETE) {
ready_state_ = READYSTATE_COMPLETE;
FireOnChanged(DISPID_READYSTATE);
}
HRESULT hr = InvokeScriptFunction(onload_handler_, url.spec());
}
void OnLoadFailed(int error_code, const std::string& url) {
HRESULT hr = InvokeScriptFunction(onerror_handler_, url);
}
void OnMessageFromChromeFrame(const std::string& message,
const std::string& origin,
const std::string& target) {
base::win::ScopedComPtr<IDispatch> message_event;
if (SUCCEEDED(CreateDomEvent("message", message, origin,
message_event.Receive()))) {
base::win::ScopedVariant event_var;
event_var.Set(static_cast<IDispatch*>(message_event));
InvokeScriptFunction(onmessage_handler_, event_var.AsInput());
}
}
virtual void OnTabbedOut(bool reverse) {
DCHECK(m_bInPlaceActive);
HWND parent = ::GetParent(m_hWnd);
::SetFocus(parent);
base::win::ScopedComPtr<IOleControlSite> control_site;
control_site.QueryFrom(m_spClientSite);
if (control_site)
control_site->OnFocus(FALSE);
}
virtual void OnOpenURL(const GURL& url_to_open,
const GURL& referrer, int open_disposition) {
HostNavigate(url_to_open, referrer, open_disposition);
}
// Called when Chrome has decided that a request needs to be treated as a
// download. The caller will be the UrlRequest worker thread.
// The worker thread will block while we process the request and take
// ownership of the request object.
// There's room for improvement here and also see todo below.
LPARAM OnDownloadRequestInHost(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled) {
ChromeFrameUrl cf_url;
cf_url.Parse(UTF8ToWide(GetDocumentUrl()));
// Always issue the download request in a new window to ensure that the
// currently loaded ChromeFrame document does not inadvartently see an
// unload request. This runs javascript unload handlers on the page which
// renders the page non functional.
VARIANT flags = { VT_I4 };
V_I4(&flags) = navNoHistory;
if (!cf_url.attach_to_external_tab())
V_I4(&flags) |= navOpenInNewWindow;
DownloadInHostParams* download_params =
reinterpret_cast<DownloadInHostParams*>(wparam);
DCHECK(download_params);
// TODO(tommi): It looks like we might have to switch the request object
// into a pass-through request object and serve up any thus far received
// content and headers to IE in order to prevent what can currently happen
// which is reissuing requests and turning POST into GET.
if (download_params->moniker) {
NavigateBrowserToMoniker(
doc_site_, download_params->moniker,
UTF8ToWide(download_params->request_headers).c_str(),
download_params->bind_ctx, NULL, download_params->post_data,
&flags);
}
delete download_params;
return TRUE;
}
virtual void OnAttachExternalTab(const AttachExternalTabParams& params) {
GURL current_url(static_cast<BSTR>(url_));
std::string url = chrome_frame::ActiveXCreateUrl(current_url, params);
// Pass the current document url as the referrer for the new navigation.
HostNavigate(GURL(url), current_url, chrome_frame::GetDisposition(params));
}
virtual void OnHandleContextMenu(const ContextMenuModel& menu_model,
int align_flags,
const MiniContextMenuParams& params) {
scoped_refptr<BasePlugin> ref(this);
ChromeFramePlugin<T>::OnHandleContextMenu(menu_model, align_flags, params);
}
LRESULT OnCreate(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled) { // NO_LINT
ModifyStyle(0, WS_CLIPCHILDREN | WS_CLIPSIBLINGS, 0);
url_fetcher_->put_notification_window(m_hWnd);
if (automation_client_.get()) {
automation_client_->SetParentWindow(m_hWnd);
} else {
NOTREACHED() << "No automation server";
return -1;
}
// Only fire the 'interactive' ready state if we aren't there already.
if (ready_state_ < READYSTATE_INTERACTIVE) {
ready_state_ = READYSTATE_INTERACTIVE;
FireOnChanged(DISPID_READYSTATE);
}
return 0;
}
LRESULT OnDestroy(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled) { // NO_LINT
DVLOG(1) << __FUNCTION__;
return 0;
}
// ChromeFrameDelegate override
virtual void OnAutomationServerReady() {
draw_sad_tab_ = false;
ChromeFramePlugin<T>::OnAutomationServerReady();
ready_state_ = READYSTATE_COMPLETE;
FireOnChanged(DISPID_READYSTATE);
}
// ChromeFrameDelegate override
virtual void OnAutomationServerLaunchFailed(
AutomationLaunchResult reason, const std::string& server_version) {
DVLOG(1) << __FUNCTION__;
if (reason == AUTOMATION_SERVER_CRASHED)
draw_sad_tab_ = true;
ready_state_ = READYSTATE_UNINITIALIZED;
FireOnChanged(DISPID_READYSTATE);
}
virtual void OnCloseTab() {
Fire_onclose();
}
// Overridden to take advantage of readystate prop changes and send those
// to potential listeners.
HRESULT FireOnChanged(DISPID dispid) {
if (dispid == DISPID_READYSTATE) {
Fire_onreadystatechanged(ready_state_);
}
return __super::FireOnChanged(dispid);
}
// IChromeFrame
// Property getter/setters for the src attribute, which contains a URL.
// The ChromeFrameActivex control initiates navigation to this URL
// when instantiated.
STDMETHOD(get_src)(BSTR* src) {
if (NULL == src) {
return E_POINTER;
}
*src = SysAllocString(url_);
return S_OK;
}
STDMETHOD(put_src)(BSTR src) {
if (src == NULL)
return E_INVALIDARG;
// Switch the src to UTF8 and try to expand to full URL
std::string src_utf8;
WideToUTF8(src, SysStringLen(src), &src_utf8);
std::string full_url = ResolveURL(GetDocumentUrl(), src_utf8);
// We can initiate navigation here even if ready_state is not complete.
// We do not have to set proxy, and AutomationClient will take care
// of navigation just after CreateExternalTab is done.
if (!automation_client_->InitiateNavigation(full_url,
GetDocumentUrl(),
this)) {
// TODO(robertshield): Make InitiateNavigation return more useful
// error information.
return E_INVALIDARG;
}
// Save full URL in BSTR member
url_.Reset(::SysAllocString(UTF8ToWide(full_url).c_str()));
return S_OK;
}
STDMETHOD(get_onload)(VARIANT* onload_handler) {
if (NULL == onload_handler)
return E_INVALIDARG;
*onload_handler = onload_handler_.Copy();
return S_OK;
}
// Property setter for the onload attribute, which contains a
// javascript function to be invoked on successful navigation.
STDMETHOD(put_onload)(VARIANT onload_handler) {
if (V_VT(&onload_handler) != VT_DISPATCH) {
DLOG(WARNING) << "Invalid onload handler type: "
<< onload_handler.vt
<< " specified";
return E_INVALIDARG;
}
onload_handler_ = onload_handler;
return S_OK;
}
// Property getter/setters for the onloaderror attribute, which contains a
// javascript function to be invoked on navigation failure.
STDMETHOD(get_onloaderror)(VARIANT* onerror_handler) {
if (NULL == onerror_handler)
return E_INVALIDARG;
*onerror_handler = onerror_handler_.Copy();
return S_OK;
}
STDMETHOD(put_onloaderror)(VARIANT onerror_handler) {
if (V_VT(&onerror_handler) != VT_DISPATCH) {
DLOG(WARNING) << "Invalid onloaderror handler type: "
<< onerror_handler.vt
<< " specified";
return E_INVALIDARG;
}
onerror_handler_ = onerror_handler;
return S_OK;
}
// Property getter/setters for the onmessage attribute, which contains a
// javascript function to be invoked when we receive a message from the
// chrome frame.
STDMETHOD(put_onmessage)(VARIANT onmessage_handler) {
if (V_VT(&onmessage_handler) != VT_DISPATCH) {
DLOG(WARNING) << "Invalid onmessage handler type: "
<< onmessage_handler.vt
<< " specified";
return E_INVALIDARG;
}
onmessage_handler_ = onmessage_handler;
return S_OK;
}
STDMETHOD(get_onmessage)(VARIANT* onmessage_handler) {
if (NULL == onmessage_handler)
return E_INVALIDARG;
*onmessage_handler = onmessage_handler_.Copy();
return S_OK;
}
STDMETHOD(get_readyState)(long* ready_state) { // NOLINT
DVLOG(1) << __FUNCTION__;
DCHECK(ready_state);
if (!ready_state)
return E_INVALIDARG;
*ready_state = ready_state_;
return S_OK;
}
// Property getter/setters for use_chrome_network flag. This flag
// indicates if chrome network stack is to be used for fetching
// network requests.
STDMETHOD(get_useChromeNetwork)(VARIANT_BOOL* use_chrome_network) {
if (!use_chrome_network)
return E_INVALIDARG;
*use_chrome_network =
automation_client_->use_chrome_network() ? VARIANT_TRUE : VARIANT_FALSE;
return S_OK;
}
STDMETHOD(put_useChromeNetwork)(VARIANT_BOOL use_chrome_network) {
if (!is_privileged()) {
DLOG(ERROR) << "Attempt to set useChromeNetwork in non-privileged mode";
return E_ACCESSDENIED;
}
automation_client_->set_use_chrome_network(
(VARIANT_FALSE != use_chrome_network));
return S_OK;
}
// Posts a message to the chrome frame.
STDMETHOD(postMessage)(BSTR message, VARIANT target) {
if (NULL == message) {
return E_INVALIDARG;
}
if (!automation_client_.get())
return E_FAIL;
std::string utf8_target;
if (target.vt == VT_BSTR) {
int len = ::SysStringLen(target.bstrVal);
if (len == 1 && target.bstrVal[0] == L'*') {
utf8_target = "*";
} else {
GURL resolved(target.bstrVal);
if (!resolved.is_valid()) {
Error(L"Unable to parse the specified target URL.");
return E_INVALIDARG;
}
utf8_target = resolved.spec();
}
} else {
utf8_target = "*";
}
std::string utf8_message;
WideToUTF8(message, ::SysStringLen(message), &utf8_message);
GURL url(GURL(document_url_).GetOrigin());
std::string origin(url.is_empty() ? "null" : url.spec());
if (!automation_client_->ForwardMessageFromExternalHost(utf8_message,
origin,
utf8_target)) {
Error(L"Failed to post message to chrome frame");
return E_FAIL;
}
return S_OK;
}
STDMETHOD(addEventListener)(BSTR event_type, IDispatch* listener,
VARIANT use_capture) {
EventHandlers* handlers = NULL;
HRESULT hr = GetHandlersForEvent(event_type, &handlers);
if (FAILED(hr))
return hr;
DCHECK(handlers != NULL);
handlers->insert(base::win::ScopedComPtr<IDispatch>(listener));
return hr;
}
STDMETHOD(removeEventListener)(BSTR event_type, IDispatch* listener,
VARIANT use_capture) {
EventHandlers* handlers = NULL;
HRESULT hr = GetHandlersForEvent(event_type, &handlers);
if (FAILED(hr))
return hr;
DCHECK(handlers != NULL);
handlers->erase(base::win::ScopedComPtr<IDispatch>(listener));
return hr;
}
STDMETHOD(get_version)(BSTR* version) {
if (!automation_client_.get()) {
NOTREACHED();
return E_FAIL;
}
if (version == NULL) {
return E_INVALIDARG;
}
*version = SysAllocString(automation_client_->GetVersion().c_str());
return S_OK;
}
STDMETHOD(postPrivateMessage)(BSTR message, BSTR origin, BSTR target) {
if (NULL == message)
return E_INVALIDARG;
if (!is_privileged()) {
DLOG(ERROR) << "Attempt to postPrivateMessage in non-privileged mode";
return E_ACCESSDENIED;
}
DCHECK(automation_client_.get());
std::string utf8_message, utf8_origin, utf8_target;
WideToUTF8(message, ::SysStringLen(message), &utf8_message);
WideToUTF8(origin, ::SysStringLen(origin), &utf8_origin);
WideToUTF8(target, ::SysStringLen(target), &utf8_target);
if (!automation_client_->ForwardMessageFromExternalHost(utf8_message,
utf8_origin,
utf8_target)) {
Error(L"Failed to post message to chrome frame");
return E_FAIL;
}
return S_OK;
}
STDMETHOD(installExtension)(BSTR crx_path) {
NOTREACHED(); // Deprecated.
return E_NOTIMPL;
}
STDMETHOD(loadExtension)(BSTR path) {
NOTREACHED(); // Deprecated.
return E_NOTIMPL;
}
STDMETHOD(getEnabledExtensions)() {
NOTREACHED(); // Deprecated.
return E_NOTIMPL;
}
STDMETHOD(registerBhoIfNeeded)() {
return E_NOTIMPL;
}
// Returns the vector of event handlers for a given event (e.g. "load").
// If the event type isn't recognized, the function fills in a descriptive
// error (IErrorInfo) and returns E_INVALIDARG.
HRESULT GetHandlersForEvent(BSTR event_type, EventHandlers** handlers) {
DCHECK(handlers != NULL);
// TODO(tommi): make these if() statements data-driven.
HRESULT hr = S_OK;
const wchar_t* event_type_end = event_type + ::SysStringLen(event_type);
if (LowerCaseEqualsASCII(event_type, event_type_end, "message")) {
*handlers = &onmessage_;
} else if (LowerCaseEqualsASCII(event_type, event_type_end, "load")) {
*handlers = &onload_;
} else if (LowerCaseEqualsASCII(event_type, event_type_end, "loaderror")) {
*handlers = &onloaderror_;
} else if (LowerCaseEqualsASCII(event_type, event_type_end,
"readystatechanged")) {
*handlers = &onreadystatechanged_;
} else if (LowerCaseEqualsASCII(event_type, event_type_end,
"privatemessage")) {
// This event handler is only available in privileged mode.
if (is_privileged()) {
*handlers = &onprivatemessage_;
} else {
Error("Event type 'privatemessage' is privileged");
hr = E_ACCESSDENIED;
}
} else if (LowerCaseEqualsASCII(event_type, event_type_end,
"extensionready")) {
// This event handler is only available in privileged mode.
if (is_privileged()) {
*handlers = &onextensionready_;
} else {
Error("Event type 'extensionready' is privileged");
hr = E_ACCESSDENIED;
}
} else {
Error(base::StringPrintf(
"Event type '%ls' not found", event_type).c_str());
hr = E_INVALIDARG;
}
return hr;
}
// Creates a new event object that supports the |data| property.
// Note: you should supply an empty string for |origin| unless you're
// creating a "message" event.
HRESULT CreateDomEvent(const std::string& event_type, const std::string& data,
const std::string& origin, IDispatch** event) {
DCHECK(event_type.length() > 0); // NOLINT
DCHECK(event != NULL);
CComObject<ComMessageEvent>* ev = NULL;
HRESULT hr = CComObject<ComMessageEvent>::CreateInstance(&ev);
if (SUCCEEDED(hr)) {
ev->AddRef();
base::win::ScopedComPtr<IOleContainer> container;
m_spClientSite->GetContainer(container.Receive());
if (ev->Initialize(container, data, origin, event_type)) {
*event = ev;
} else {
NOTREACHED() << "event->Initialize";
ev->Release();
hr = E_UNEXPECTED;
}
}
return hr;
}
// Helper function to execute a function on a script IDispatch interface.
HRESULT InvokeScriptFunction(const VARIANT& script_object,
const std::string& param) {
base::win::ScopedVariant script_arg(UTF8ToWide(param.c_str()).c_str());
return InvokeScriptFunction(script_object, script_arg.AsInput());
}
HRESULT InvokeScriptFunction(const VARIANT& script_object, VARIANT* param) {
return InvokeScriptFunction(script_object, param, 1);
}
HRESULT InvokeScriptFunction(const VARIANT& script_object, VARIANT* params,
int param_count) {
DCHECK_GE(param_count, 0);
DCHECK(params);
if (V_VT(&script_object) != VT_DISPATCH ||
script_object.pdispVal == NULL) {
return S_FALSE;
}
CComPtr<IDispatch> script(script_object.pdispVal);
HRESULT hr = script.InvokeN(static_cast<DISPID>(DISPID_VALUE),
params,
param_count);
// 0x80020101 == SCRIPT_E_REPORTED.
// When the script we're invoking has an error, we get this error back.
DLOG_IF(ERROR, FAILED(hr) && hr != 0x80020101) << "Failed to invoke script";
return hr;
}
// Gives the browser a chance to handle an accelerator that was
// sent to the out of proc chromium instance.
// Returns S_OK iff the accelerator was handled by the browser.
HRESULT AllowFrameToTranslateAccelerator(const MSG& msg) {
static const int kMayTranslateAcceleratorOffset = 0x5c;
// Although IBrowserService2 is officially deprecated, it's still alive
// and well in IE7 and earlier. We have to use it here to correctly give
// the browser a chance to handle keyboard shortcuts.
// This happens automatically for activex components that have windows that
// belong to the current thread. In that circumstance IE owns the message
// loop and can walk the line of components allowing each participant the
// chance to handle the keystroke and eventually falls back to
// v_MayTranslateAccelerator. However in our case, the message loop is
// owned by the out-of-proc chromium instance so IE doesn't have a chance to
// fall back on its default behavior. Instead we give IE a chance to
// handle the shortcut here.
MSG accel_message = msg;
accel_message.hwnd = ::GetParent(m_hWnd);
HRESULT hr = S_FALSE;
base::win::ScopedComPtr<IBrowserService2> bs2;
// For non-IE containers, we use the standard IOleInPlaceFrame contract
// (which IE does not support). For IE, we try to use IBrowserService2,
// but need special handling for IE8 (see below).
//
// We try to cache an IOleInPlaceFrame for our site. If we fail, we don't
// retry, and we fall back to the IBrowserService2 and PostMessage
// approaches below.
if (!in_place_frame_ && !failed_to_fetch_in_place_frame_) {
base::win::ScopedComPtr<IOleInPlaceUIWindow> dummy_ui_window;
RECT dummy_pos_rect = {0};
RECT dummy_clip_rect = {0};
OLEINPLACEFRAMEINFO dummy_frame_info = {0};
if (!m_spInPlaceSite ||
FAILED(m_spInPlaceSite->GetWindowContext(in_place_frame_.Receive(),
dummy_ui_window.Receive(),
&dummy_pos_rect,
&dummy_clip_rect,
&dummy_frame_info))) {
failed_to_fetch_in_place_frame_ = true;
}
}
// The IBrowserService2 code below (second conditional) explicitly checks
// for whether the IBrowserService2::v_MayTranslateAccelerator function is
// valid. On IE8 there is one vtable ieframe!c_ImpostorBrowserService2Vtbl
// where this function entry is NULL which leads to a crash. We don't know
// under what circumstances this vtable is actually used though.
if (in_place_frame_) {
hr = in_place_frame_->TranslateAccelerator(&accel_message, 0);
} else if (S_OK == DoQueryService(
SID_STopLevelBrowser, m_spInPlaceSite,
bs2.Receive()) && bs2.get() &&
*(*(reinterpret_cast<void***>(bs2.get())) +
kMayTranslateAcceleratorOffset)) {
hr = bs2->v_MayTranslateAccelerator(&accel_message);
} else {
// IE8 doesn't support IBrowserService2 unless you enable a special,
// undocumented flag with CoInternetSetFeatureEnabled and even then,
// the object you get back implements only a couple of methods of
// that interface... all the other entries in the vtable are NULL.
// In addition, the class that implements it is called
// ImpostorBrowserService2 :)
// IE8 does have a new interface though, presumably called
// ITabBrowserService or something that can be abbreviated to TBS.
// That interface has a method, TranslateAcceleratorTBS that does
// call the root MayTranslateAccelerator function, but alas the
// first argument to MayTranslateAccelerator is hard coded to FALSE