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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
#include <memory>
#include <string>
#include "base/command_line.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/chrome_extension_frame_host.h"
#include "chrome/browser/extensions/window_controller.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
#include "extensions/browser/extension_registrar.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_util.h"
#include "extensions/common/constants.h"
#include "extensions/common/switches.h"
#include "third_party/blink/public/common/chrome_debug_urls.h"
namespace extensions {
ChromeExtensionWebContentsObserver::ChromeExtensionWebContentsObserver(
content::WebContents* web_contents)
: ExtensionWebContentsObserver(web_contents),
content::WebContentsUserData<ChromeExtensionWebContentsObserver>(
*web_contents) {}
ChromeExtensionWebContentsObserver::~ChromeExtensionWebContentsObserver() =
default;
// static
void ChromeExtensionWebContentsObserver::CreateForWebContents(
content::WebContents* web_contents) {
content::WebContentsUserData<
ChromeExtensionWebContentsObserver>::CreateForWebContents(web_contents);
// Initialize this instance if necessary.
FromWebContents(web_contents)->Initialize();
}
std::unique_ptr<ExtensionFrameHost>
ChromeExtensionWebContentsObserver::CreateExtensionFrameHost(
content::WebContents* web_contents) {
return std::make_unique<ChromeExtensionFrameHost>(web_contents);
}
void ChromeExtensionWebContentsObserver::RenderFrameCreated(
content::RenderFrameHost* render_frame_host) {
DCHECK(initialized());
ReloadIfTerminated(render_frame_host);
ExtensionWebContentsObserver::RenderFrameCreated(render_frame_host);
}
void ChromeExtensionWebContentsObserver::InitializeRenderFrame(
content::RenderFrameHost* render_frame_host) {
DCHECK(initialized());
ExtensionWebContentsObserver::InitializeRenderFrame(render_frame_host);
WindowController* controller = dispatcher()->GetExtensionWindowController();
if (controller) {
GetLocalFrame(render_frame_host)
->UpdateBrowserWindowId(controller->GetWindowId());
}
}
void ChromeExtensionWebContentsObserver::ReloadIfTerminated(
content::RenderFrameHost* render_frame_host) {
DCHECK(initialized());
std::string extension_id = util::GetExtensionIdFromFrame(render_frame_host);
if (extension_id.empty()) {
return;
}
ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context());
// 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 (registry->terminated_extensions().GetByID(extension_id)) {
ExtensionRegistrar::Get(browser_context())->ReloadExtension(extension_id);
}
}
void ChromeExtensionWebContentsObserver::SetUpRenderFrameHost(
content::RenderFrameHost* render_frame_host) {
ExtensionWebContentsObserver::SetUpRenderFrameHost(render_frame_host);
// This logic should match
// ChromeContentBrowserClient::RegisterNonNetworkSubresourceURLLoaderFactories.
const Extension* extension = GetExtensionFromFrame(render_frame_host, false);
if (!extension) {
return;
}
int process_id = render_frame_host->GetProcess()->GetDeprecatedID();
auto* policy = content::ChildProcessSecurityPolicy::GetInstance();
// Components of chrome that are implemented as extensions or platform apps
// are allowed to use chrome://resources/ and chrome://theme/ URLs.
if ((extension->is_extension() || extension->is_platform_app()) &&
Manifest::IsComponentLocation(extension->location())) {
policy->GrantRequestOrigin(
process_id, url::Origin::Create(GURL(blink::kChromeUIResourcesURL)));
policy->GrantRequestOrigin(
process_id, url::Origin::Create(GURL(chrome::kChromeUIThemeURL)));
}
// Extensions, legacy packaged apps, and component platform apps are allowed
// to use chrome://favicon/ and chrome://extension-icon/ URLs. Hosted apps are
// not allowed because they are served via web servers (and are generally
// never given access to Chrome APIs).
if (extension->is_extension() || extension->is_legacy_packaged_app() ||
(extension->is_platform_app() &&
Manifest::IsComponentLocation(extension->location()))) {
policy->GrantRequestOrigin(
process_id, url::Origin::Create(GURL(chrome::kChromeUIFaviconURL)));
policy->GrantRequestOrigin(
process_id,
url::Origin::Create(GURL(chrome::kChromeUIExtensionIconURL)));
}
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(ChromeExtensionWebContentsObserver);
} // namespace extensions
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