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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.
#include "chrome/browser/renderer_host/chrome_render_view_host_observer.h"
#include <vector>
#include "base/command_line.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/net/predictor.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search_engines/search_terms_data.h"
#include "chrome/browser/search_engines/template_url.h"
#include "chrome/browser/search_engines/template_url_service.h"
#include "chrome/browser/search_engines/template_url_service_factory.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_messages.h"
#include "chrome/common/render_messages.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/page_navigator.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/page_transition_types.h"
#include "extensions/common/constants.h"
#include "extensions/common/manifest.h"
#include "net/http/http_request_headers.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/window_open_disposition.h"
#include "ui/gfx/codec/jpeg_codec.h"
#if defined(OS_WIN)
#include "base/win/win_util.h"
#endif // OS_WIN
using content::ChildProcessSecurityPolicy;
using content::OpenURLParams;
using content::RenderViewHost;
using content::SiteInstance;
using content::WebContents;
using extensions::Extension;
using extensions::Manifest;
ChromeRenderViewHostObserver::ChromeRenderViewHostObserver(
RenderViewHost* render_view_host, chrome_browser_net::Predictor* predictor)
: content::RenderViewHostObserver(render_view_host),
predictor_(predictor) {
SiteInstance* site_instance = render_view_host->GetSiteInstance();
profile_ = Profile::FromBrowserContext(
site_instance->GetBrowserContext());
InitRenderViewForExtensions();
}
ChromeRenderViewHostObserver::~ChromeRenderViewHostObserver() {
if (render_view_host())
RemoveRenderViewHostForExtensions(render_view_host());
}
void ChromeRenderViewHostObserver::RenderViewHostInitialized() {
// This reinitializes some state in the case where a render process crashes
// but we keep the same RenderViewHost instance.
InitRenderViewForExtensions();
}
void ChromeRenderViewHostObserver::RenderViewHostDestroyed(
RenderViewHost* rvh) {
RemoveRenderViewHostForExtensions(rvh);
delete this;
}
void ChromeRenderViewHostObserver::Navigate(const GURL& url) {
if (!predictor_)
return;
if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kChromeFrame) &&
(url.SchemeIs(chrome::kHttpScheme) || url.SchemeIs(content::kHttpsScheme)))
predictor_->PreconnectUrlAndSubresources(url, GURL());
}
bool ChromeRenderViewHostObserver::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ChromeRenderViewHostObserver, message)
IPC_MESSAGE_HANDLER(ChromeViewHostMsg_FocusedNodeTouched,
OnFocusedNodeTouched)
IPC_MESSAGE_HANDLER(ChromeViewHostMsg_RequestThumbnailForContextNode_ACK,
OnRequestThumbnailForContextNodeACK)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ChromeRenderViewHostObserver::InitRenderViewForExtensions() {
const Extension* extension = GetExtension();
if (!extension)
return;
content::RenderProcessHost* process = render_view_host()->GetProcess();
// Some extensions use chrome:// URLs.
// This is a temporary solution. Replace it with access to chrome-static://
// once it is implemented. See: crbug.com/226927.
Manifest::Type type = extension->GetType();
if (type == Manifest::TYPE_EXTENSION ||
type == Manifest::TYPE_LEGACY_PACKAGED_APP ||
(type == Manifest::TYPE_PLATFORM_APP &&
extension->location() == Manifest::COMPONENT)) {
ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), chrome::kChromeUIScheme);
}
// Some extensions use file:// URLs.
if (type == Manifest::TYPE_EXTENSION ||
type == Manifest::TYPE_LEGACY_PACKAGED_APP) {
if (extensions::ExtensionSystem::Get(profile_)->extension_service()->
extension_prefs()->AllowFileAccess(extension->id())) {
ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), chrome::kFileScheme);
}
}
switch (type) {
case Manifest::TYPE_EXTENSION:
case Manifest::TYPE_USER_SCRIPT:
case Manifest::TYPE_HOSTED_APP:
case Manifest::TYPE_LEGACY_PACKAGED_APP:
case Manifest::TYPE_PLATFORM_APP:
// Always send a Loaded message before ActivateExtension so that
// ExtensionDispatcher knows what Extension is active, not just its ID.
// This is important for classifying the Extension's JavaScript context
// correctly (see ExtensionDispatcher::ClassifyJavaScriptContext).
Send(new ExtensionMsg_Loaded(
std::vector<ExtensionMsg_Loaded_Params>(
1, ExtensionMsg_Loaded_Params(extension))));
Send(new ExtensionMsg_ActivateExtension(extension->id()));
break;
case Manifest::TYPE_UNKNOWN:
case Manifest::TYPE_THEME:
case Manifest::TYPE_SHARED_MODULE:
break;
}
}
const Extension* ChromeRenderViewHostObserver::GetExtension() {
// Note that due to ChromeContentBrowserClient::GetEffectiveURL(), hosted apps
// (excluding bookmark apps) will have a chrome-extension:// URL for their
// site, so we can ignore that wrinkle here.
SiteInstance* site_instance = render_view_host()->GetSiteInstance();
const GURL& site = site_instance->GetSiteURL();
if (!site.SchemeIs(extensions::kExtensionScheme))
return NULL;
ExtensionService* service =
extensions::ExtensionSystem::Get(profile_)->extension_service();
if (!service)
return NULL;
// Reload the extension if it has crashed.
// TODO(yoz): This reload doesn't happen synchronously for unpacked
// extensions. It seems to be fast enough, but there is a race.
// We should delay loading until the extension has reloaded.
if (service->GetTerminatedExtension(site.host()))
service->ReloadExtension(site.host());
// May be null if the extension doesn't exist, for example if somebody typos
// a chrome-extension:// URL.
return service->extensions()->GetByID(site.host());
}
void ChromeRenderViewHostObserver::RemoveRenderViewHostForExtensions(
RenderViewHost* rvh) {
ExtensionProcessManager* process_manager =
extensions::ExtensionSystem::Get(profile_)->process_manager();
if (process_manager)
process_manager->UnregisterRenderViewHost(rvh);
}
void ChromeRenderViewHostObserver::OnFocusedNodeTouched(bool editable) {
#if defined(OS_WIN) && defined(USE_AURA)
if (editable) {
base::win::DisplayVirtualKeyboard();
} else {
base::win::DismissVirtualKeyboard();
}
#endif // OS_WIN && USE_AURA
}
// Handles the image thumbnail for the context node, composes a image search
// request based on the received thumbnail and opens the request in a new tab.
void ChromeRenderViewHostObserver::OnRequestThumbnailForContextNodeACK(
const SkBitmap& bitmap) {
if (bitmap.isNull())
return;
WebContents* web_contents =
WebContents::FromRenderViewHost(render_view_host());
const TemplateURL* const default_provider =
TemplateURLServiceFactory::GetForProfile(profile_)->
GetDefaultSearchProvider();
if (!web_contents || !default_provider)
return;
const int kDefaultQualityForImageSearch = 90;
std::vector<unsigned char> data;
if (!gfx::JPEGCodec::Encode(
reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
gfx::JPEGCodec::FORMAT_SkBitmap, bitmap.width(), bitmap.height(),
static_cast<int>(bitmap.rowBytes()), kDefaultQualityForImageSearch,
&data))
return;
TemplateURLRef::SearchTermsArgs search_args =
TemplateURLRef::SearchTermsArgs(base::string16());
search_args.image_thumbnail_content = std::string(data.begin(), data.end());
// TODO(jnd): Add a method in WebContentsViewDelegate to get the image URL
// from the ContextMenuParams which creates current context menu.
search_args.image_url = GURL();
TemplateURLRef::PostContent post_content;
GURL result(default_provider->image_url_ref().ReplaceSearchTerms(
search_args, &post_content));
if (!result.is_valid())
return;
OpenURLParams open_url_params(result, content::Referrer(), NEW_FOREGROUND_TAB,
content::PAGE_TRANSITION_LINK, false);
const std::string& content_type = post_content.first;
std::string* post_data = &post_content.second;
if (!post_data->empty()) {
DCHECK(!content_type.empty());
open_url_params.uses_post = true;
open_url_params.browser_initiated_post_data =
base::RefCountedString::TakeString(post_data);
open_url_params.extra_headers += base::StringPrintf(
"%s: %s\r\n", net::HttpRequestHeaders::kContentType,
content_type.c_str());
}
web_contents->OpenURL(open_url_params);
}
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