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chrome_frame_npapi.cc
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// Copyright (c) 2011 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.
#include "chrome_frame/chrome_frame_npapi.h"
#include "base/basictypes.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/string_split.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "chrome/test/automation/tab_proxy.h"
#include "chrome_frame/ff_privilege_check.h"
#include "chrome_frame/np_utils.h"
#include "chrome_frame/scoped_ns_ptr_win.h"
#include "chrome_frame/utils.h"
MessageLoop* ChromeFrameNPAPI::message_loop_ = NULL;
int ChromeFrameNPAPI::instance_count_ = 0;
static const char* kNpEventNames[] = {
"focus",
"blur",
};
NPClass ChromeFrameNPAPI::plugin_class_ = {
NP_CLASS_STRUCT_VERSION,
ChromeFrameNPAPI::AllocateObject,
ChromeFrameNPAPI::DeallocateObject,
ChromeFrameNPAPI::Invalidate,
ChromeFrameNPAPI::HasMethod,
ChromeFrameNPAPI::Invoke,
NULL, // invokeDefault
ChromeFrameNPAPI::HasProperty,
ChromeFrameNPAPI::GetProperty,
ChromeFrameNPAPI::SetProperty,
NULL, // remove property
NULL, // enumeration
NULL, // construct
};
NPIdentifier
ChromeFrameNPAPI::plugin_property_identifiers_[PLUGIN_PROPERTY_COUNT]
= {0};
const NPUTF8* ChromeFrameNPAPI::plugin_property_identifier_names_[] = {
"version",
"src",
"onload",
"onloaderror",
"onmessage",
"readystate",
"onprivatemessage",
"usechromenetwork",
"onclose",
};
const NPUTF8* ChromeFrameNPAPI::plugin_method_identifier_names_[] = {
"postMessage",
"postPrivateMessage",
};
ChromeFrameNPAPI::PluginMethod ChromeFrameNPAPI::plugin_methods_[] = {
&ChromeFrameNPAPI::postMessage,
&ChromeFrameNPAPI::postPrivateMessage,
};
NPIdentifier
ChromeFrameNPAPI::plugin_method_identifiers_[arraysize(plugin_methods_)]
= {0};
void ChromeFrameNPAPI::CompileAsserts() {
NOTREACHED(); // This function should never be invoked.
COMPILE_ASSERT(arraysize(plugin_method_identifier_names_) ==
arraysize(plugin_methods_),
you_must_add_both_plugin_method_and_name);
COMPILE_ASSERT(arraysize(plugin_property_identifier_names_) ==
arraysize(plugin_property_identifiers_),
you_must_add_both_plugin_property_and_name);
}
static const char kPluginSrcAttribute[] = "src";
static const char kPluginForceFullPageAttribute[] = "force_full_page";
static const char kPluginOnloadAttribute[] = "onload";
static const char kPluginOnErrorAttribute[] = "onloaderror";
static const char kPluginOnMessageAttribute[] = "onmessage";
static const char kPluginOnPrivateMessageAttribute[] = "onprivatemessage";
static const char kPluginOnCloseAttribute[] = "onclose";
// These properties can only be set in arguments at control instantiation.
// When the privileged_mode property is provided and set to true, the control
// will probe for whether its hosting document has the system principal, in
// which case privileged mode will be enabled.
static const char kPluginPrivilegedModeAttribute[] = "privileged_mode";
// If privileged mode is enabled, the string value of this argument will
// be appended to the chrome.exe command line.
static const char kPluginChromeExtraArguments[] = "chrome_extra_arguments";
// If privileged mode is enabled, the string value of this argument will
// be used as the profile name for our chrome.exe instance.
static const char kPluginChromeProfileName[] = "chrome_profile_name";
// If chrome network stack is to be used
static const char kPluginUseChromeNetwork[] = "usechromenetwork";
// ChromeFrameNPAPI member defines.
// TODO(tommi): remove ignore_setfocus_ since that's not how focus is
// handled anymore.
ChromeFrameNPAPI::ChromeFrameNPAPI()
: instance_(NULL),
mode_(NP_EMBED),
force_full_page_plugin_(false),
ready_state_(READYSTATE_LOADING),
enabled_popups_(false),
navigate_after_initialization_(false) {
}
ChromeFrameNPAPI::~ChromeFrameNPAPI() {
if (IsWindow()) {
if (!UnsubclassWindow()) {
// TODO(tommi): Figure out why this can sometimes happen in the
// WidgetModeFF_Resize unittest.
DLOG(ERROR) << "Couldn't unsubclass safely!";
UnsubclassWindow(TRUE);
}
}
m_hWnd = NULL;
instance_count_--;
if (instance_count_ <= 0) {
delete message_loop_;
message_loop_ = NULL;
}
Uninitialize();
}
std::string ChromeFrameNPAPI::GetLocation() {
// Note that GetWindowObject() will cache the window object here.
return np_utils::GetLocation(instance_, GetWindowObject());
}
bool ChromeFrameNPAPI::Initialize(NPMIMEType mime_type, NPP instance,
uint16 mode, int16 argc, char* argn[],
char* argv[]) {
if (!Base::Initialize())
return false;
instance_ = instance;
mime_type_ = mime_type;
mode_ = mode;
document_url_ = GetLocation();
if (instance_count_ == 0) {
DCHECK(message_loop_ == NULL);
message_loop_ = new MessageLoop();
}
instance_count_++;
// Create our prefs service wrapper here.
DCHECK(!pref_service_.get());
pref_service_ = CreatePrefService();
if (!pref_service_.get()) {
NOTREACHED() << "new NpProxyService";
return false;
}
// Temporary variables for privileged only parameters
const char* onprivatemessage_arg = NULL;
const char* chrome_extra_arguments_arg = NULL;
const char* chrome_profile_name_arg = NULL;
bool chrome_network_arg_set = false;
bool chrome_network_arg = false;
bool wants_privileged = false;
for (int i = 0; i < argc; ++i) {
if (LowerCaseEqualsASCII(argn[i], kPluginSrcAttribute)) {
src_ = ResolveURL(GetDocumentUrl(), argv[i]);
} else if (LowerCaseEqualsASCII(argn[i], kPluginForceFullPageAttribute)) {
force_full_page_plugin_ = atoi(argv[i]) ? true : false;
} else if (LowerCaseEqualsASCII(argn[i], kPluginOnErrorAttribute)) {
onerror_handler_ = JavascriptToNPObject(argv[i]);
} else if (LowerCaseEqualsASCII(argn[i], kPluginOnMessageAttribute)) {
onmessage_handler_ = JavascriptToNPObject(argv[i]);
} else if (LowerCaseEqualsASCII(argn[i], kPluginOnCloseAttribute)) {
onclose_handler_ = JavascriptToNPObject(argv[i]);
} else if (LowerCaseEqualsASCII(argn[i],
kPluginPrivilegedModeAttribute)) {
// Test for the FireFox privileged mode if the user requests it
// in initialization parameters.
wants_privileged = atoi(argv[i]) ? true : false;
} else if (LowerCaseEqualsASCII(argn[i],
kPluginOnPrivateMessageAttribute)) {
onprivatemessage_arg = argv[i];
} else if (LowerCaseEqualsASCII(argn[i], kPluginChromeExtraArguments)) {
chrome_extra_arguments_arg = argv[i];
} else if (LowerCaseEqualsASCII(argn[i], kPluginChromeProfileName)) {
chrome_profile_name_arg = argv[i];
} else if (LowerCaseEqualsASCII(argn[i], kPluginUseChromeNetwork)) {
chrome_network_arg_set = true;
chrome_network_arg = atoi(argv[i]) ? true : false;
}
}
// Is the privileged mode requested?
if (wants_privileged) {
set_is_privileged(IsFireFoxPrivilegedInvocation(instance));
if (!is_privileged()) {
DLOG(WARNING) << "Privileged mode requested in non-privileged context";
}
}
std::wstring extra_arguments;
std::wstring profile_name(GetHostProcessName(false));
if (is_privileged()) {
// Process any privileged mode-only arguments we were handed.
if (onprivatemessage_arg)
onprivatemessage_handler_ = JavascriptToNPObject(onprivatemessage_arg);
if (chrome_extra_arguments_arg)
extra_arguments = UTF8ToWide(chrome_extra_arguments_arg);
if (chrome_profile_name_arg)
profile_name = UTF8ToWide(chrome_profile_name_arg);
if (chrome_network_arg_set)
automation_client_->set_use_chrome_network(chrome_network_arg);
}
static const wchar_t kHandleTopLevelRequests[] = L"HandleTopLevelRequests";
bool top_level_requests = GetConfigBool(true, kHandleTopLevelRequests);
automation_client_->set_handle_top_level_requests(top_level_requests);
automation_client_->set_route_all_top_level_navigations(true);
// Setup Url fetcher.
url_fetcher_.set_NPPInstance(instance_);
url_fetcher_.set_frame_busting(!is_privileged());
automation_client_->SetUrlFetcher(&url_fetcher_);
// TODO(joshia): Initialize navigation here and send proxy config as
// part of LaunchSettings
/*
if (!src_.empty())
automation_client_->InitiateNavigation(src_, is_privileged());
std::string proxy_settings;
bool has_prefs = pref_service_->Initialize(instance_,
automation_client_.get());
if (has_prefs && pref_service_->GetProxyValueJSONString(&proxy_settings)) {
automation_client_->SetProxySettings(proxy_settings);
}
*/
// We can't call SubscribeToFocusEvents here since
// when Initialize gets called, Opera is in a state where
// it can't handle calls back and the thread will hang.
// Instead, we call SubscribeToFocusEvents when we initialize
// our plugin window.
// TODO(stoyan): Ask host for specific interface whether to honor
// host's in-private mode.
return InitializeAutomation(profile_name, extra_arguments,
GetBrowserIncognitoMode(), true,
GURL(src_), GURL(), true);
}
void ChromeFrameNPAPI::Uninitialize() {
if (ready_state_ != READYSTATE_UNINITIALIZED)
SetReadyState(READYSTATE_UNINITIALIZED);
UnsubscribeFromFocusEvents();
if (pref_service_) {
pref_service_->UnInitialize();
pref_service_ = NULL;
}
window_object_.Free();
onerror_handler_.Free();
onmessage_handler_.Free();
onprivatemessage_handler_.Free();
onclose_handler_.Free();
Base::Uninitialize();
}
void ChromeFrameNPAPI::OnFinalMessage(HWND window) {
// The automation server should be gone by now.
Uninitialize();
}
void ChromeFrameNPAPI::SubscribeToFocusEvents() {
DCHECK(focus_listener_.get() == NULL);
focus_listener_ = new DomEventListener(this);
if (!focus_listener_->Subscribe(instance_, kNpEventNames,
arraysize(kNpEventNames))) {
focus_listener_ = NULL;
focus_listener_ = new NPObjectEventListener(this);
if (!focus_listener_->Subscribe(instance_, kNpEventNames,
arraysize(kNpEventNames))) {
DLOG(ERROR) << "Failed to subscribe to focus events";
focus_listener_ = NULL;
}
}
}
void ChromeFrameNPAPI::UnsubscribeFromFocusEvents() {
if (!focus_listener_.get())
return;
bool ret = focus_listener_->Unsubscribe(instance_, kNpEventNames,
arraysize(kNpEventNames));
DLOG_IF(WARNING, !ret) << "focus_listener_->Unsubscribe failed";
focus_listener_ = NULL;
}
bool ChromeFrameNPAPI::SetWindow(NPWindow* window_info) {
if (!window_info || !automation_client_.get()) {
NOTREACHED();
return false;
}
HWND window = reinterpret_cast<HWND>(window_info->window);
if (!::IsWindow(window)) {
// No window created yet. Ignore this call.
return false;
}
if (IsWindow()) {
// We've already subclassed, make sure that SetWindow doesn't get called
// with an HWND other than the one we subclassed during our lifetime.
DCHECK(window == m_hWnd);
return true;
}
automation_client_->SetParentWindow(window);
SubscribeToFocusEvents();
if (force_full_page_plugin_) {
// By default full page mode is only enabled when the plugin is loaded off
// a separate file, i.e. it is the primary content in the window. Even if
// we specify the width/height attributes for the plugin as 100% each, FF
// instantiates the plugin passing in a width/height of 100px each. To
// workaround this we resize the plugin window passed in by FF to the size
// of its parent.
HWND plugin_parent_window = ::GetParent(window);
RECT plugin_parent_rect = {0};
::GetClientRect(plugin_parent_window, &plugin_parent_rect);
::SetWindowPos(window, NULL, plugin_parent_rect.left,
plugin_parent_rect.top,
plugin_parent_rect.right - plugin_parent_rect.left,
plugin_parent_rect.bottom - plugin_parent_rect.top, 0);
}
// Subclass the browser's plugin window here.
if (SubclassWindow(window)) {
DWORD new_style_flags = WS_CLIPCHILDREN;
ModifyStyle(0, new_style_flags, 0);
if (ready_state_ < READYSTATE_INTERACTIVE) {
SetReadyState(READYSTATE_INTERACTIVE);
}
}
return true;
}
void ChromeFrameNPAPI::Print(NPPrint* print_info) {
if (!print_info) {
NOTREACHED();
return;
}
// We dont support full tab mode yet.
if (print_info->mode != NP_EMBED) {
NOTREACHED();
return;
}
NPWindow window = print_info->print.embedPrint.window;
RECT print_bounds = {0};
print_bounds.left = window.x;
print_bounds.top = window.y;
print_bounds.right = window.x + window.width;
print_bounds.bottom = window.x + window.height;
automation_client_->Print(
reinterpret_cast<HDC>(print_info->print.embedPrint.platformPrint),
print_bounds);
}
void ChromeFrameNPAPI::UrlNotify(const char* url, NPReason reason,
void* notify_data) {
if (enabled_popups_) {
// We have opened the URL so tell the browser to restore popup settings
enabled_popups_ = false;
npapi::PopPopupsEnabledState(instance_);
}
url_fetcher_.UrlNotify(url, reason, notify_data);
}
void ChromeFrameNPAPI::OnAcceleratorPressed(const MSG& accel_message) {
DVLOG(1) << __FUNCTION__
<< " msg:" << base::StringPrintf("0x%04X", accel_message.message)
<< " key:" << accel_message.wParam;
// The host browser does call TranslateMessage on messages like WM_KEYDOWN
// WM_KEYUP, etc, which will result in messages like WM_CHAR, WM_SYSCHAR, etc
// being posted to the message queue. We don't post these messages here to
// avoid these messages from getting handled twice.
if (!is_privileged() &&
accel_message.message != WM_CHAR &&
accel_message.message != WM_DEADCHAR &&
accel_message.message != WM_SYSCHAR &&
accel_message.message != WM_SYSDEADCHAR) {
// A very primitive way to handle keystrokes.
// TODO(tommi): When we've implemented a way for chrome to
// know when keystrokes are handled (deterministically) on that side,
// then this function should get called and not otherwise.
::PostMessage(::GetParent(m_hWnd), accel_message.message,
accel_message.wParam, accel_message.lParam);
}
if (automation_client_.get()) {
TabProxy* tab = automation_client_->tab();
if (tab) {
tab->ProcessUnhandledAccelerator(accel_message);
}
}
}
void ChromeFrameNPAPI::OnTabbedOut(bool reverse) {
DVLOG(1) << __FUNCTION__;
ignore_setfocus_ = true;
HWND parent = ::GetParent(m_hWnd);
::SetFocus(parent);
INPUT input = {0};
input.type = INPUT_KEYBOARD;
input.ki.wVk = VK_TAB;
SendInput(1, &input, sizeof(input));
input.ki.dwFlags = KEYEVENTF_KEYUP;
SendInput(1, &input, sizeof(input));
ignore_setfocus_ = false;
}
void ChromeFrameNPAPI::OnOpenURL(const GURL& url,
const GURL& referrer,
int open_disposition) {
std::string target;
switch (open_disposition) {
case NEW_FOREGROUND_TAB:
target = "_blank";
break;
case NEW_BACKGROUND_TAB:
target = "_blank";
break;
case NEW_WINDOW:
case NEW_POPUP:
target = "_new";
break;
default:
break;
}
// Tell the browser to temporarily allow popups
enabled_popups_ = true;
npapi::PushPopupsEnabledState(instance_, TRUE);
npapi::GetURLNotify(instance_, url.spec().c_str(), target.c_str(), NULL);
}
bool ChromeFrameNPAPI::HasMethod(NPObject* obj, NPIdentifier name) {
for (int i = 0; i < arraysize(plugin_methods_); ++i) {
if (name == plugin_method_identifiers_[i])
return true;
}
return false;
}
bool ChromeFrameNPAPI::Invoke(NPObject* header, NPIdentifier name,
const NPVariant* args, uint32_t arg_count,
NPVariant* result) {
ChromeFrameNPAPI* plugin_instance = ChromeFrameInstanceFromNPObject(header);
if (!plugin_instance && (plugin_instance->automation_client_.get()))
return false;
bool success = false;
for (int i = 0; i < arraysize(plugin_methods_); ++i) {
if (name == plugin_method_identifiers_[i]) {
PluginMethod method = plugin_methods_[i];
success = (plugin_instance->*method)(header, args, arg_count, result);
break;
}
}
return success;
}
void ChromeFrameNPAPI::InitializeIdentifiers() {
npapi::GetStringIdentifiers(plugin_method_identifier_names_,
arraysize(plugin_methods_),
plugin_method_identifiers_);
npapi::GetStringIdentifiers(plugin_property_identifier_names_,
PLUGIN_PROPERTY_COUNT,
plugin_property_identifiers_);
}
NPObject* ChromeFrameNPAPI::AllocateObject(NPP instance, NPClass* class_name) {
static bool identifiers_initialized = false;
ChromeFrameNPObject* plugin_object = new ChromeFrameNPObject();
DCHECK(plugin_object != NULL);
plugin_object->chrome_frame_plugin_instance = new ChromeFrameNPAPI();
DCHECK(plugin_object->chrome_frame_plugin_instance != NULL);
plugin_object->npp = NULL;
COMPILE_ASSERT(arraysize(plugin_method_identifiers_) ==
arraysize(plugin_method_identifier_names_),
method_count_mismatch);
COMPILE_ASSERT(arraysize(plugin_method_identifiers_) ==
arraysize(plugin_methods_),
method_count_mismatch);
if (!identifiers_initialized) {
InitializeIdentifiers();
identifiers_initialized = true;
}
return reinterpret_cast<NPObject*>(plugin_object);
}
void ChromeFrameNPAPI::DeallocateObject(NPObject* header) {
ChromeFrameNPObject* plugin_object =
reinterpret_cast<ChromeFrameNPObject*>(header);
DCHECK(plugin_object != NULL);
if (plugin_object) {
delete plugin_object->chrome_frame_plugin_instance;
delete plugin_object;
}
}
void ChromeFrameNPAPI::Invalidate(NPObject* header) {
DCHECK(header);
ChromeFrameNPObject* plugin_object =
reinterpret_cast<ChromeFrameNPObject*>(header);
if (plugin_object) {
DCHECK(plugin_object->chrome_frame_plugin_instance);
plugin_object->chrome_frame_plugin_instance->Uninitialize();
}
}
ChromeFrameNPAPI* ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(
NPP instance) {
if ((instance == NULL) || (instance->pdata == NULL)) {
NOTREACHED();
return NULL;
}
return ChromeFrameInstanceFromNPObject(instance->pdata);
}
ChromeFrameNPAPI* ChromeFrameNPAPI::ChromeFrameInstanceFromNPObject(
void* object) {
ChromeFrameNPObject* plugin_object =
reinterpret_cast<ChromeFrameNPObject*>(object);
if (!plugin_object) {
NOTREACHED();
return NULL;
}
DCHECK(plugin_object->chrome_frame_plugin_instance);
return plugin_object->chrome_frame_plugin_instance;
}
bool ChromeFrameNPAPI::HasProperty(NPObject* obj, NPIdentifier name) {
for (int i = 0; i < PLUGIN_PROPERTY_COUNT; ++i) {
if (name == plugin_property_identifiers_[i])
return true;
}
return false;
}
bool ChromeFrameNPAPI::GetProperty(NPIdentifier name,
NPVariant* variant) {
if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONERROR]) {
if (onerror_handler_) {
variant->type = NPVariantType_Object;
variant->value.objectValue = onerror_handler_.Copy();
return true;
}
} else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONMESSAGE]) {
if (onmessage_handler_) {
variant->type = NPVariantType_Object;
variant->value.objectValue = onmessage_handler_.Copy();
return true;
}
} else if (name ==
plugin_property_identifiers_[PLUGIN_PROPERTY_ONPRIVATEMESSAGE]) {
if (!is_privileged()) {
DLOG(WARNING) << "Attempt to read onprivatemessage property while not "
"privileged";
} else {
if (onprivatemessage_handler_) {
variant->type = NPVariantType_Object;
variant->value.objectValue =
onprivatemessage_handler_.Copy();
return true;
}
}
} else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONCLOSE]) {
if (onclose_handler_) {
variant->type = NPVariantType_Object;
variant->value.objectValue = onclose_handler_.Copy();
return true;
}
} else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_SRC]) {
AllocateStringVariant(src_, variant);
return true;
} else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_VERSION]) {
const std::wstring version =
automation_client_->GetVersion();
AllocateStringVariant(WideToUTF8(version), variant);
return true;
} else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_READYSTATE]) {
INT32_TO_NPVARIANT(ready_state_, *variant);
return true;
} else if (name ==
plugin_property_identifiers_[PLUGIN_PROPERTY_USECHROMENETWORK]) {
BOOLEAN_TO_NPVARIANT(automation_client_->use_chrome_network(), *variant);
return true;
}
return false;
}
bool ChromeFrameNPAPI::GetProperty(NPObject* object, NPIdentifier name,
NPVariant* variant) {
if (!object || !variant) {
NOTREACHED();
return false;
}
ChromeFrameNPAPI* plugin_instance = ChromeFrameInstanceFromNPObject(object);
if (!plugin_instance) {
NOTREACHED();
return false;
}
return plugin_instance->GetProperty(name, variant);
}
bool ChromeFrameNPAPI::SetProperty(NPIdentifier name,
const NPVariant* variant) {
if (NPVARIANT_IS_OBJECT(*variant)) {
if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONERROR]) {
onerror_handler_.Free();
onerror_handler_ = variant->value.objectValue;
return true;
} else if (
name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONMESSAGE]) {
onmessage_handler_.Free();
onmessage_handler_ = variant->value.objectValue;
return true;
} else if (name ==
plugin_property_identifiers_[PLUGIN_PROPERTY_ONPRIVATEMESSAGE]) {
if (!is_privileged()) {
DLOG(WARNING) << "Attempt to set onprivatemessage while not privileged";
} else {
onprivatemessage_handler_.Free();
onprivatemessage_handler_ = variant->value.objectValue;
return true;
}
} else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONCLOSE]) {
onclose_handler_.Free();
onclose_handler_ = variant->value.objectValue;
return true;
}
} else if (NPVARIANT_IS_STRING(*variant) || NPVARIANT_IS_NULL(*variant)) {
if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_SRC]) {
return NavigateToURL(variant, 1, NULL);
}
} else if (NPVARIANT_IS_BOOLEAN(*variant)) {
if (name ==
plugin_property_identifiers_[PLUGIN_PROPERTY_USECHROMENETWORK]) {
automation_client_->set_use_chrome_network(
NPVARIANT_TO_BOOLEAN(*variant));
}
}
return false;
}
bool ChromeFrameNPAPI::SetProperty(NPObject* object, NPIdentifier name,
const NPVariant* variant) {
if (!object || !variant) {
DLOG(ERROR) << "Cannot set property: " << npapi::StringFromIdentifier(name);
return false;
}
ChromeFrameNPAPI* plugin_instance = ChromeFrameInstanceFromNPObject(object);
if (!plugin_instance) {
NOTREACHED();
return false;
}
return plugin_instance->SetProperty(name, variant);
}
void ChromeFrameNPAPI::OnFocus() {
DVLOG(1) << __FUNCTION__;
PostMessage(WM_SETFOCUS, 0, 0);
}
void ChromeFrameNPAPI::OnEvent(const char* event_name) {
DCHECK(event_name);
DVLOG(1) << event_name;
if (lstrcmpiA(event_name, "focus") == 0) {
OnFocus();
} else if (lstrcmpiA(event_name, "blur") == 0) {
OnBlur();
} else {
NOTREACHED() << event_name;
}
}
LRESULT CALLBACK ChromeFrameNPAPI::DropKillFocusHook(int code, WPARAM wparam,
LPARAM lparam) {
LRESULT ret = 0;
CWPSTRUCT* wp = reinterpret_cast<CWPSTRUCT*>(lparam);
if ((code < 0) || (wp->message != WM_KILLFOCUS))
ret = ::CallNextHookEx(NULL, code, wparam, lparam);
return ret;
}
LRESULT ChromeFrameNPAPI::OnSetFocus(UINT message, WPARAM wparam,
LPARAM lparam, BOOL& handled) { // NO_LINT
// Opera has a WH_CALLWNDPROC hook that handles WM_KILLFOCUS and
// prevents us from setting the focus to the tab.
// To work around that, we set a temporary hook here that does nothing
// (not even call other hooks) when it sees WM_KILLFOCUS.
HHOOK hook = NULL;
hook = ::SetWindowsHookEx(WH_CALLWNDPROC, DropKillFocusHook, NULL,
::GetCurrentThreadId());
// Since we chain message maps, make sure we are not calling base class
// twice for WM_SETFOCUS.
BOOL handled_by_base = TRUE;
LRESULT ret = Base::OnSetFocus(message, wparam, lparam, handled_by_base);
if (hook)
::UnhookWindowsHookEx(hook);
return ret;
}
void ChromeFrameNPAPI::OnBlur() {
DVLOG(1) << __FUNCTION__;
}
void ChromeFrameNPAPI::OnLoad(const GURL& gurl) {
DVLOG(1) << "Firing onload";
FireEvent("load", gurl.spec());
}
void ChromeFrameNPAPI::OnLoadFailed(int error_code, const std::string& url) {
FireEvent("loaderror", url);
ScopedNpVariant result;
InvokeDefault(onerror_handler_, url, &result);
}
void ChromeFrameNPAPI::OnMessageFromChromeFrame(const std::string& message,
const std::string& origin,
const std::string& target) {
bool private_message = false;
if (target.compare("*") != 0) {
if (is_privileged()) {
private_message = true;
} else {
if (!HaveSameOrigin(target, document_url_)) {
DLOG(WARNING) << "Dropping posted message since target doesn't match "
"the current document's origin. target=" << target;
return;
}
}
}
// Create a MessageEvent object that contains the message and origin
// as well as supporting other MessageEvent (see the HTML5 spec) properties.
// Then call the onmessage handler.
ScopedNpObject<NPObject> event;
bool ok = CreateMessageEvent(false, true, message, origin, event.Receive());
if (ok) {
// Don't call FireEvent here (or we'll have an event wrapped by an event).
DispatchEvent(event);
ScopedNpVariant result;
NPVariant params[2];
OBJECT_TO_NPVARIANT(event, params[0]);
bool invoke = false;
if (private_message) {
DCHECK(is_privileged());
STRINGN_TO_NPVARIANT(target.c_str(), target.length(), params[1]);
invoke = InvokeDefault(onprivatemessage_handler_,
arraysize(params),
params,
&result);
} else {
invoke = InvokeDefault(onmessage_handler_, params[0], &result);
}
DLOG_IF(WARNING, !invoke) << "InvokeDefault failed";
} else {
DLOG(WARNING) << "CreateMessageEvent failed, probably exiting";
}
}
void ChromeFrameNPAPI::OnAutomationServerReady() {
Base::OnAutomationServerReady();
std::string proxy_settings;
bool has_prefs = pref_service_->Initialize(instance_,
automation_client_.get());
if (has_prefs && pref_service_->GetProxyValueJSONString(&proxy_settings)) {
automation_client_->SetProxySettings(proxy_settings);
}
if (navigate_after_initialization_ && !src_.empty()) {
navigate_after_initialization_ = false;
if (!automation_client_->InitiateNavigation(src_,
GetDocumentUrl(),
this)) {
DLOG(ERROR) << "Failed to navigate to: " << src_;
src_.clear();
}
}
SetReadyState(READYSTATE_COMPLETE);
}
void ChromeFrameNPAPI::OnAutomationServerLaunchFailed(
AutomationLaunchResult reason, const std::string& server_version) {
SetReadyState(READYSTATE_UNINITIALIZED);
// In IE, we don't display warnings for privileged CF instances because
// there are 2 CFs created for each tab (so we decide on the CEEE side
// whether to show a warning). In FF however, there is only one privileged
// CF instance per Firefox window, so OK to show the warning there without
// any further logic.
if (reason == AUTOMATION_VERSION_MISMATCH) {
THREAD_SAFE_UMA_HISTOGRAM_COUNTS("ChromeFrame.VersionMismatchDisplayed", 1);
DisplayVersionMismatchWarning(m_hWnd, server_version);
}
}
void ChromeFrameNPAPI::OnCloseTab() {
std::string arg;
FireEvent("close", arg);
ScopedNpVariant result;
InvokeDefault(onclose_handler_, arg, &result);
}
bool ChromeFrameNPAPI::InvokeDefault(NPObject* object,
unsigned param_count,
const NPVariant* params,
NPVariant* result) {
if (!object)
return false;
bool ret = npapi::InvokeDefault(instance_, object, params, param_count,
result);
// InvokeDefault can return false in FF even though we do see the call
// go through. It's not clear to me what the circumstances are, so
// we log it as a warning while tracking it down.
DLOG_IF(WARNING, !ret) << "npapi::InvokeDefault failed";
return ret;
}
bool ChromeFrameNPAPI::InvokeDefault(NPObject* object, const std::string& param,
NPVariant* result) {
NPVariant arg;
STRINGN_TO_NPVARIANT(param.c_str(), param.length(), arg);
return InvokeDefault(object, arg, result);
}
bool ChromeFrameNPAPI::InvokeDefault(NPObject* object, const NPVariant& param,
NPVariant* result) {
return InvokeDefault(object, 1, ¶m, result);
}
bool ChromeFrameNPAPI::CreateEvent(const std::string& type, bool bubbles,
bool cancelable, NPObject** basic_event) {
DCHECK(basic_event);
NPObject* window = GetWindowObject();
if (!window) {
// Can fail if the browser is closing (seen in Opera).
return false;
}
const char* identifier_names[] = {
"document",
"createEvent",
"initEvent",
};
NPIdentifier identifiers[arraysize(identifier_names)];
npapi::GetStringIdentifiers(identifier_names, arraysize(identifier_names),
identifiers);
// Fetch the document object from the window.
ScopedNpVariant document;
bool ok = npapi::GetProperty(instance_, window, identifiers[0], &document);
if (!ok) {
// This could happen if the page is being unloaded.
DLOG(WARNING) << "Failed to fetch the document object";
return false;
}
bool success = false;
if (ok && NPVARIANT_IS_OBJECT(document)) {
// Call document.createEvent("Event") to create a basic event object.
NPVariant event_type;
STRINGN_TO_NPVARIANT("Event", sizeof("Event") - 1, event_type);
ScopedNpVariant result;
success = npapi::Invoke(instance_, NPVARIANT_TO_OBJECT(document),
identifiers[1], &event_type, 1, &result);
if (!NPVARIANT_IS_OBJECT(result)) {
DLOG(WARNING) << "Failed to invoke createEvent";
success = false;
} else {
NPVariant init_args[3];
STRINGN_TO_NPVARIANT(type.c_str(), type.length(), init_args[0]);
BOOLEAN_TO_NPVARIANT(bubbles, init_args[1]);
BOOLEAN_TO_NPVARIANT(cancelable, init_args[2]);
// Now initialize the event object by calling
// event.initEvent(type, bubbles, cancelable);
ScopedNpVariant init_results;
ok = npapi::Invoke(instance_, NPVARIANT_TO_OBJECT(result), identifiers[2],
init_args, arraysize(init_args), &init_results);
if (ok) {
success = true;
// Finally, pass the ownership to the caller.
*basic_event = NPVARIANT_TO_OBJECT(result);
VOID_TO_NPVARIANT(result); // Prevent the object from being released.
} else {
DLOG(ERROR) << "initEvent failed";
success = false;
}
}
}
return success;
}
bool ChromeFrameNPAPI::CreateMessageEvent(bool bubbles, bool cancelable,
const std::string& data,
const std::string& origin,
NPObject** message_event) {
DCHECK(message_event);
ScopedNpObject<NPObject> event;
bool ok = CreateEvent("message", false, true, event.Receive());
if (ok) {
typedef enum {
DATA,
ORIGIN,
LAST_EVENT_ID,
SOURCE,
MESSAGE_PORT,
IDENTIFIER_COUNT, // Must be last.
} StringIdentifiers;
static NPIdentifier identifiers[IDENTIFIER_COUNT] = {0};
if (!identifiers[0]) {
const NPUTF8* identifier_names[] = {
"data",
"origin",
"lastEventId",
"source",
"messagePort",
};
COMPILE_ASSERT(arraysize(identifier_names) == arraysize(identifiers),
mismatched_array_size);