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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/extensions/active_tab_permission_granter.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sessions/session_id.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_messages.h"
#include "chrome/common/extensions/permissions/permission_set.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
using content::RenderProcessHost;
using content::WebContentsObserver;
namespace extensions {
ActiveTabPermissionGranter::ActiveTabPermissionGranter(
content::WebContents* web_contents, int tab_id, Profile* profile)
: WebContentsObserver(web_contents), tab_id_(tab_id) {
registrar_.Add(this,
chrome::NOTIFICATION_EXTENSION_UNLOADED,
content::Source<Profile>(profile));
}
ActiveTabPermissionGranter::~ActiveTabPermissionGranter() {}
void ActiveTabPermissionGranter::GrantIfRequested(const Extension* extension) {
if (!extension->HasAPIPermission(extensions::APIPermission::kActiveTab))
return;
if (IsGranted(extension))
return;
URLPattern pattern(UserScript::kValidUserScriptSchemes);
if (pattern.Parse(web_contents()->GetURL().spec()) !=
URLPattern::PARSE_SUCCESS) {
// Pattern parsing could fail if this is an unsupported URL e.g. chrome://.
return;
}
APIPermissionSet new_apis;
new_apis.insert(APIPermission::kTab);
URLPatternSet new_hosts;
new_hosts.AddPattern(pattern);
scoped_refptr<const PermissionSet> new_permissions =
new PermissionSet(new_apis, new_hosts, URLPatternSet());
extension->UpdateTabSpecificPermissions(tab_id_, new_permissions);
granted_extensions_.Insert(extension);
Send(new ExtensionMsg_UpdateTabSpecificPermissions(GetPageID(),
tab_id_,
extension->id(),
new_hosts));
}
bool ActiveTabPermissionGranter::IsGranted(const Extension* extension) {
return granted_extensions_.Contains(extension->id());
}
void ActiveTabPermissionGranter::DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) {
if (details.is_in_page)
return;
DCHECK(details.is_main_frame); // important: sub-frames don't get granted!
ClearActiveExtensionsAndNotify();
}
void ActiveTabPermissionGranter::WebContentsDestroyed(
content::WebContents* web_contents) {
ClearActiveExtensionsAndNotify();
}
void ActiveTabPermissionGranter::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_UNLOADED);
const Extension* extension =
content::Details<UnloadedExtensionInfo>(details)->extension;
// Note: don't need to clear the permissions (nor tell the renderer about it)
// because it's being unloaded anyway.
granted_extensions_.Remove(extension->id());
}
void ActiveTabPermissionGranter::ClearActiveExtensionsAndNotify() {
if (granted_extensions_.is_empty())
return;
std::vector<std::string> extension_ids;
for (ExtensionSet::const_iterator it = granted_extensions_.begin();
it != granted_extensions_.end(); ++it) {
(*it)->ClearTabSpecificPermissions(tab_id_);
extension_ids.push_back((*it)->id());
}
Send(new ExtensionMsg_ClearTabSpecificPermissions(tab_id_, extension_ids));
granted_extensions_.Clear();
}
int32 ActiveTabPermissionGranter::GetPageID() {
return web_contents()->GetController().GetActiveEntry()->GetPageID();
}
} // namespace extensions
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