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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_manager.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/extensions/extension_tab_helper.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/tab_contents/tab_contents.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/notification_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 {
ActiveTabPermissionManager::ActiveTabPermissionManager(
TabContents* tab_contents)
: WebContentsObserver(tab_contents->web_contents()),
tab_contents_(tab_contents) {
InsertActiveURL(web_contents()->GetURL());
registrar_.Add(this,
chrome::NOTIFICATION_EXTENSION_UNLOADED,
content::Source<Profile>(tab_contents->profile()));
}
ActiveTabPermissionManager::~ActiveTabPermissionManager() {}
void ActiveTabPermissionManager::GrantIfRequested(const Extension* extension) {
if (!extension->HasAPIPermission(extensions::APIPermission::kActiveTab))
return;
if (active_urls_.is_empty())
return;
// Only need to check the number of permissions here rather than the URLs
// themselves, because the set can only ever grow.
const URLPatternSet* old_permissions =
extension->GetTabSpecificHostPermissions(tab_id());
if (old_permissions && (old_permissions->size() == active_urls_.size()))
return;
granted_.Insert(extension);
extension->SetTabSpecificHostPermissions(tab_id(), active_urls_);
Send(new ExtensionMsg_UpdateTabSpecificPermissions(GetPageID(),
tab_id(),
extension->id(),
active_urls_));
}
void ActiveTabPermissionManager::GrantIfRequested(
const std::string& extension_id) {
ExtensionService* service =
ExtensionSystem::Get(tab_contents_->profile())->extension_service();
const Extension* extension = service->extensions()->GetByID(extension_id);
if (extension)
GrantIfRequested(extension);
}
void ActiveTabPermissionManager::DidCommitProvisionalLoadForFrame(
int64 frame_id,
bool is_main_frame,
const GURL& url,
content::PageTransition transition_type,
content::RenderViewHost* render_view_host) {
if (is_main_frame)
ClearActiveURLsAndNotify();
InsertActiveURL(url);
}
void ActiveTabPermissionManager::WebContentsDestroyed(
content::WebContents* web_contents) {
ClearActiveURLsAndNotify();
}
void ActiveTabPermissionManager::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;
extension->ClearTabSpecificHostPermissions(tab_id());
std::vector<std::string> single_id(1, extension->id());
Send(new ExtensionMsg_ClearTabSpecificPermissions(tab_id(), single_id));
granted_.Remove(extension->id());
}
void ActiveTabPermissionManager::ClearActiveURLsAndNotify() {
active_urls_.ClearPatterns();
if (granted_.is_empty())
return;
std::vector<std::string> extension_ids;
for (ExtensionSet::const_iterator it = granted_.begin();
it != granted_.end(); ++it) {
(*it)->ClearTabSpecificHostPermissions(tab_id());
extension_ids.push_back((*it)->id());
}
Send(new ExtensionMsg_ClearTabSpecificPermissions(tab_id(), extension_ids));
granted_.Clear();
}
void ActiveTabPermissionManager::InsertActiveURL(const GURL& url) {
URLPattern pattern(UserScript::kValidUserScriptSchemes);
if (pattern.Parse(url.spec()) == URLPattern::PARSE_SUCCESS)
active_urls_.AddPattern(pattern);
}
int32 ActiveTabPermissionManager::tab_id() {
return tab_contents_->extension_tab_helper()->tab_id();
}
int32 ActiveTabPermissionManager::GetPageID() {
return tab_contents_->web_contents()->GetController().GetActiveEntry()->
GetPageID();
}
} // namespace extensions
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