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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/domain_reliability/context_manager.h"
#include <utility>
#include "base/functional/callback_helpers.h"
#include "components/domain_reliability/google_configs.h"
#include "net/base/url_util.h"
namespace domain_reliability {
DomainReliabilityContextManager::DomainReliabilityContextManager(
const MockableTime* time,
const std::string& upload_reporter_string,
DomainReliabilityContext::UploadAllowedCallback upload_allowed_callback,
DomainReliabilityDispatcher* dispatcher)
: time_(time),
upload_reporter_string_(upload_reporter_string),
upload_allowed_callback_(upload_allowed_callback),
dispatcher_(dispatcher) {
DCHECK(time_);
DCHECK(dispatcher_);
}
DomainReliabilityContextManager::~DomainReliabilityContextManager() = default;
void DomainReliabilityContextManager::RouteBeacon(
std::unique_ptr<DomainReliabilityBeacon> beacon) {
const std::string& beacon_host = beacon->url.host();
// An exact match for the host always takes priority.
DomainReliabilityContext* context_to_use = GetContext(beacon_host);
if (context_to_use) {
context_to_use->OnBeacon(std::move(beacon));
return;
}
DomainReliabilityContext* superdomain_context =
GetSuperdomainContext(beacon_host);
// Try to get a Google config which may match the host itself, or the host's
// parent domain.
std::unique_ptr<const DomainReliabilityConfig> google_config =
MaybeGetGoogleConfig(beacon_host);
if (!google_config) {
if (superdomain_context)
superdomain_context->OnBeacon(std::move(beacon));
return;
}
context_to_use = superdomain_context;
bool google_config_is_exact = (google_config->origin.host() == beacon_host);
// An exact match takes priority over an existing superdomain context, if any
// exists.
if (google_config_is_exact || !context_to_use)
context_to_use = AddContextForConfig(std::move(google_config));
context_to_use->OnBeacon(std::move(beacon));
}
void DomainReliabilityContextManager::ClearBeacons(
const base::RepeatingCallback<bool(const url::Origin&)>& origin_filter) {
for (auto& context_entry : contexts_) {
if (origin_filter.is_null() ||
origin_filter.Run(context_entry.second->config().origin)) {
context_entry.second->ClearBeacons();
}
}
}
DomainReliabilityContext* DomainReliabilityContextManager::AddContextForConfig(
std::unique_ptr<const DomainReliabilityConfig> config) {
const std::string& key = config->origin.host();
auto pair = contexts_.insert(
std::make_pair(key, CreateContextForConfig(std::move(config))));
// Insertion should have succeeded (the key should not have already existed).
DCHECK(pair.second);
return pair.first->second.get();
}
void DomainReliabilityContextManager::RemoveContexts(
const base::RepeatingCallback<bool(const url::Origin&)>& origin_filter) {
if (origin_filter.is_null()) {
contexts_.clear();
return;
}
for (auto it = contexts_.begin(); it != contexts_.end();) {
if (origin_filter.Run(it->second->config().origin)) {
it = contexts_.erase(it);
continue;
}
++it;
}
}
DomainReliabilityContext* DomainReliabilityContextManager::GetContext(
const std::string& host) const {
ContextMap::const_iterator context_it = contexts_.find(host);
if (context_it == contexts_.end())
return nullptr;
return context_it->second.get();
}
DomainReliabilityContext*
DomainReliabilityContextManager::GetSuperdomainContext(
const std::string& host) const {
// TODO(juliatuttle): Make sure parent is not in PSL before using.
std::string parent_host = net::GetSuperdomain(host);
if (parent_host.empty())
return nullptr;
DomainReliabilityContext* context = GetContext(parent_host);
if (context && context->config().include_subdomains)
return context;
return nullptr;
}
void DomainReliabilityContextManager::OnNetworkChanged(base::TimeTicks now) {
last_network_change_time_ = now;
}
void DomainReliabilityContextManager::SetUploader(
DomainReliabilityUploader* uploader) {
DCHECK(!uploader_);
DCHECK(uploader);
uploader_ = uploader;
}
std::unique_ptr<DomainReliabilityContext>
DomainReliabilityContextManager::CreateContextForConfig(
std::unique_ptr<const DomainReliabilityConfig> config) const {
DCHECK(config);
DCHECK(config->IsValid());
DCHECK(uploader_);
return std::make_unique<DomainReliabilityContext>(
time_, DomainReliabilityScheduler::Params::GetFromFieldTrialsOrDefaults(),
upload_reporter_string_, &last_network_change_time_,
upload_allowed_callback_, dispatcher_, uploader_, std::move(config));
}
} // namespace domain_reliability
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