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cookie_monster_change_dispatcher.cc
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cookie_monster_change_dispatcher.cc
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// Copyright 2018 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 "net/cookies/cookie_monster_change_dispatcher.h"
#include "base/bind.h"
#include "base/strings/string_piece.h"
#include "base/task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/cookies/canonical_cookie.h"
#include "net/cookies/cookie_change_dispatcher.h"
namespace net {
namespace {
// Special key in GlobalDomainMap for global listeners.
constexpr base::StringPiece kGlobalDomainKey = base::StringPiece("\0", 1);
//
constexpr base::StringPiece kGlobalNameKey = base::StringPiece("\0", 1);
} // anonymous namespace
CookieMonsterChangeDispatcher::Subscription::Subscription(
base::WeakPtr<CookieMonsterChangeDispatcher> change_dispatcher,
std::string domain_key,
std::string name_key,
GURL url,
net::CookieChangeCallback callback)
: change_dispatcher_(std::move(change_dispatcher)),
domain_key_(std::move(domain_key)),
name_key_(std::move(name_key)),
url_(std::move(url)),
callback_(std::move(callback)),
task_runner_(base::ThreadTaskRunnerHandle::Get()),
weak_ptr_factory_(this) {
DCHECK(url_.is_valid() || url_.is_empty());
DCHECK_EQ(url_.is_empty(), domain_key_ == kGlobalDomainKey);
// The net::CookieOptions are hard-coded for now, but future APIs may set
// different options. For example, JavaScript observers will not be allowed to
// see HTTP-only changes.
options_.set_include_httponly();
options_.set_same_site_cookie_mode(
CookieOptions::SameSiteCookieMode::INCLUDE_STRICT_AND_LAX);
}
CookieMonsterChangeDispatcher::Subscription::~Subscription() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
change_dispatcher_->UnlinkSubscription(this);
}
void CookieMonsterChangeDispatcher::Subscription::DispatchChange(
const net::CanonicalCookie& cookie,
net::CookieChangeCause change_cause) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
if (!url_.is_empty() && !cookie.IncludeForRequestURL(url_, options_))
return;
// TODO(mmenke, pwnall): Run callbacks synchronously?
task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&Subscription::DoDispatchChange,
weak_ptr_factory_.GetWeakPtr(), cookie, change_cause));
}
void CookieMonsterChangeDispatcher::Subscription::DoDispatchChange(
const net::CanonicalCookie& cookie,
net::CookieChangeCause change_cause) const {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
callback_.Run(cookie, change_cause);
}
CookieMonsterChangeDispatcher::CookieMonsterChangeDispatcher()
: weak_ptr_factory_(this) {}
CookieMonsterChangeDispatcher::~CookieMonsterChangeDispatcher() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
}
// static
std::string CookieMonsterChangeDispatcher::DomainKey(
const std::string& domain) {
std::string domain_key =
net::registry_controlled_domains::GetDomainAndRegistry(
domain, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
DCHECK_NE(domain_key, kGlobalDomainKey);
return domain_key;
}
// static
std::string CookieMonsterChangeDispatcher::DomainKey(const GURL& url) {
std::string domain_key =
net::registry_controlled_domains::GetDomainAndRegistry(
url, net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
DCHECK_NE(domain_key, kGlobalDomainKey);
return domain_key;
}
// static
std::string CookieMonsterChangeDispatcher::NameKey(std::string name) {
DCHECK_NE(name, kGlobalNameKey);
return name;
}
std::unique_ptr<CookieChangeSubscription>
CookieMonsterChangeDispatcher::AddCallbackForCookie(
const GURL& url,
const std::string& name,
CookieChangeCallback callback) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
std::unique_ptr<Subscription> subscription = std::make_unique<Subscription>(
weak_ptr_factory_.GetWeakPtr(), DomainKey(url), NameKey(name), url,
std::move(callback));
LinkSubscription(subscription.get());
return subscription;
}
std::unique_ptr<CookieChangeSubscription>
CookieMonsterChangeDispatcher::AddCallbackForUrl(
const GURL& url,
CookieChangeCallback callback) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
std::unique_ptr<Subscription> subscription = std::make_unique<Subscription>(
weak_ptr_factory_.GetWeakPtr(), DomainKey(url),
std::string(kGlobalNameKey), url, std::move(callback));
LinkSubscription(subscription.get());
return subscription;
}
std::unique_ptr<CookieChangeSubscription>
CookieMonsterChangeDispatcher::AddCallbackForAllChanges(
CookieChangeCallback callback) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
std::unique_ptr<Subscription> subscription = std::make_unique<Subscription>(
weak_ptr_factory_.GetWeakPtr(), std::string(kGlobalDomainKey),
std::string(kGlobalNameKey), GURL(""), std::move(callback));
LinkSubscription(subscription.get());
return subscription;
}
void CookieMonsterChangeDispatcher::DispatchChange(
const CanonicalCookie& cookie,
CookieChangeCause cause,
bool notify_global_hooks) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
DispatchChangeToDomainKey(cookie, cause, DomainKey(cookie.Domain()));
if (notify_global_hooks)
DispatchChangeToDomainKey(cookie, cause, std::string(kGlobalDomainKey));
}
void CookieMonsterChangeDispatcher::DispatchChangeToDomainKey(
const CanonicalCookie& cookie,
CookieChangeCause cause,
const std::string& domain_key) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
CookieDomainMap::iterator it = cookie_domain_map_.find(domain_key);
if (it == cookie_domain_map_.end())
return;
DispatchChangeToNameKey(cookie, cause, it->second, NameKey(cookie.Name()));
DispatchChangeToNameKey(cookie, cause, it->second,
std::string(kGlobalNameKey));
}
void CookieMonsterChangeDispatcher::DispatchChangeToNameKey(
const CanonicalCookie& cookie,
CookieChangeCause cause,
CookieNameMap& cookie_name_map,
const std::string& name_key) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
CookieNameMap::iterator it = cookie_name_map.find(name_key);
if (it == cookie_name_map.end())
return;
SubscriptionList& subscription_list = it->second;
for (base::LinkNode<Subscription>* node = subscription_list.head();
node != subscription_list.end(); node = node->next()) {
node->value()->DispatchChange(cookie, cause);
}
}
void CookieMonsterChangeDispatcher::LinkSubscription(
Subscription* subscription) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
// The subscript operator creates empty maps if the lookups fail. This is
// exactly what this method needs.
CookieNameMap& cookie_name_map =
cookie_domain_map_[subscription->domain_key()];
SubscriptionList& subscription_list =
cookie_name_map[subscription->name_key()];
subscription_list.Append(subscription);
}
void CookieMonsterChangeDispatcher::UnlinkSubscription(
Subscription* subscription) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
CookieDomainMap::iterator cookie_domain_map_iterator =
cookie_domain_map_.find(subscription->domain_key());
DCHECK(cookie_domain_map_iterator != cookie_domain_map_.end());
CookieNameMap& cookie_name_map = cookie_domain_map_iterator->second;
CookieNameMap::iterator cookie_name_map_iterator =
cookie_name_map.find(subscription->name_key());
DCHECK(cookie_name_map_iterator != cookie_name_map.end());
SubscriptionList& subscription_list = cookie_name_map_iterator->second;
subscription->RemoveFromList();
if (!subscription_list.empty())
return;
cookie_name_map.erase(cookie_name_map_iterator);
if (!cookie_name_map.empty())
return;
cookie_domain_map_.erase(cookie_domain_map_iterator);
}
} // namespace net