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// Copyright (c) 2010 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/appcache/chrome_appcache_service.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/cookie_prompt_modal_dialog_delegate.h"
#include "chrome/browser/message_box_handler.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/notification_service.h"
#include "net/base/net_errors.h"
#include "webkit/appcache/appcache_thread.h"
static bool has_initialized_thread_ids;
// ChromeAppCacheService cannot just subclass the delegate interface
// because we may have several prompts pending.
class ChromeAppCacheService::PromptDelegate
: public CookiePromptModalDialogDelegate {
public:
PromptDelegate(ChromeAppCacheService* service,
const GURL& manifest_url, net::CompletionCallback* callback)
: service_(service), manifest_url_(manifest_url), callback_(callback) {
}
virtual void AllowSiteData(bool session_expire) {
service_->DidPrompt(net::OK, manifest_url_, callback_);
delete this;
}
virtual void BlockSiteData() {
service_->DidPrompt(net::ERR_ACCESS_DENIED, manifest_url_, callback_);
delete this;
}
private:
scoped_refptr<ChromeAppCacheService> service_;
GURL manifest_url_;
net::CompletionCallback* callback_;
};
// ----------------------------------------------------------------------------
ChromeAppCacheService::ChromeAppCacheService(
const FilePath& profile_path,
ChromeURLRequestContext* request_context) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
DCHECK(request_context);
if (!has_initialized_thread_ids) {
has_initialized_thread_ids = true;
appcache::AppCacheThread::Init(ChromeThread::DB, ChromeThread::IO,
NULL); // TODO(michaeln): cache_thread
}
host_contents_settings_map_ = request_context->host_content_settings_map();
registrar_.Add(
this, NotificationType::PURGE_MEMORY, NotificationService::AllSources());
// Init our base class.
Initialize(request_context->is_off_the_record() ?
FilePath() : profile_path.Append(chrome::kAppCacheDirname));
set_request_context(request_context);
set_appcache_policy(this);
}
ChromeAppCacheService::~ChromeAppCacheService() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
}
// static
void ChromeAppCacheService::ClearLocalState(const FilePath& profile_path) {
file_util::Delete(profile_path.Append(chrome::kAppCacheDirname), true);
}
bool ChromeAppCacheService::CanLoadAppCache(const GURL& manifest_url) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
ContentSetting setting = host_contents_settings_map_->GetContentSetting(
manifest_url, CONTENT_SETTINGS_TYPE_COOKIES);
DCHECK(setting != CONTENT_SETTING_DEFAULT);
return setting == CONTENT_SETTING_ALLOW ||
setting == CONTENT_SETTING_ASK; // we don't prompt for read access
}
int ChromeAppCacheService::CanCreateAppCache(
const GURL& manifest_url, net::CompletionCallback* callback) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
ContentSetting setting = host_contents_settings_map_->GetContentSetting(
manifest_url, CONTENT_SETTINGS_TYPE_COOKIES);
DCHECK(setting != CONTENT_SETTING_DEFAULT);
if (setting == CONTENT_SETTING_ASK) {
ChromeThread::PostTask(
ChromeThread::UI, FROM_HERE,
NewRunnableMethod(this, &ChromeAppCacheService::DoPrompt,
manifest_url, callback));
return net::ERR_IO_PENDING;
}
return (setting != CONTENT_SETTING_BLOCK) ? net::OK :
net::ERR_ACCESS_DENIED;
}
void ChromeAppCacheService::DoPrompt(
const GURL& manifest_url, net::CompletionCallback* callback) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
// The setting may have changed (due to the "remember" option)
ContentSetting setting = host_contents_settings_map_->GetContentSetting(
manifest_url, CONTENT_SETTINGS_TYPE_COOKIES);
if (setting != CONTENT_SETTING_ASK) {
int rv = (setting != CONTENT_SETTING_BLOCK) ? net::OK :
net::ERR_ACCESS_DENIED;
DidPrompt(rv, manifest_url, callback);
return;
}
// Show the prompt on top of the current tab.
Browser* browser = BrowserList::GetLastActive();
if (!browser || !browser->GetSelectedTabContents()) {
DidPrompt(net::ERR_ACCESS_DENIED, manifest_url, callback);
return;
}
RunAppCachePrompt(browser->GetSelectedTabContents(),
host_contents_settings_map_, manifest_url,
new PromptDelegate(this, manifest_url, callback));
}
void ChromeAppCacheService::DidPrompt(
int rv, const GURL& manifest_url, net::CompletionCallback* callback) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
ChromeThread::PostTask(
ChromeThread::IO, FROM_HERE,
NewRunnableMethod(this, &ChromeAppCacheService::CallCallback,
rv, callback));
}
void ChromeAppCacheService::CallCallback(
int rv, net::CompletionCallback* callback) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
callback->Run(rv);
}
void ChromeAppCacheService::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
DCHECK(type == NotificationType::PURGE_MEMORY);
PurgeMemory();
}
// ----------------------------------------------------------------------------
static ChromeThread::ID ToChromeThreadID(int id) {
DCHECK(has_initialized_thread_ids);
DCHECK(id == ChromeThread::DB || id == ChromeThread::IO);
return static_cast<ChromeThread::ID>(id);
}
namespace appcache {
// An impl of AppCacheThread we need to provide to the appcache lib.
bool AppCacheThread::PostTask(
int id,
const tracked_objects::Location& from_here,
Task* task) {
return ChromeThread::PostTask(ToChromeThreadID(id), from_here, task);
}
bool AppCacheThread::CurrentlyOn(int id) {
return ChromeThread::CurrentlyOn(ToChromeThreadID(id));
}
} // namespace appcache
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