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// Copyright 2015 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 "components/update_client/action_update_check.h"
#include <stddef.h>
#include <utility>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/version.h"
#include "components/update_client/action_update.h"
#include "components/update_client/configurator.h"
#include "components/update_client/update_checker.h"
#include "components/update_client/update_client.h"
#include "components/update_client/update_client_errors.h"
#include "components/update_client/utils.h"
using std::string;
using std::vector;
namespace update_client {
namespace {
// Returns true if the |proposed| version is newer than |current| version.
bool IsVersionNewer(const base::Version& current, const std::string& proposed) {
base::Version proposed_ver(proposed);
return proposed_ver.IsValid() && current.CompareTo(proposed_ver) < 0;
}
} // namespace
ActionUpdateCheck::ActionUpdateCheck(
std::unique_ptr<UpdateChecker> update_checker,
const base::Version& browser_version,
const std::string& extra_request_parameters)
: update_checker_(std::move(update_checker)),
browser_version_(browser_version),
extra_request_parameters_(extra_request_parameters) {}
ActionUpdateCheck::~ActionUpdateCheck() {
DCHECK(thread_checker_.CalledOnValidThread());
}
void ActionUpdateCheck::Run(UpdateContext* update_context, Callback callback) {
DCHECK(thread_checker_.CalledOnValidThread());
ActionImpl::Run(update_context, callback);
// Calls out to get the corresponding CrxComponent data for the CRXs in this
// update context.
vector<CrxComponent> crx_components;
update_context_->crx_data_callback.Run(update_context_->ids, &crx_components);
for (size_t i = 0; i != crx_components.size(); ++i) {
std::unique_ptr<CrxUpdateItem> item = base::MakeUnique<CrxUpdateItem>();
const CrxComponent& crx_component = crx_components[i];
item->id = GetCrxComponentID(crx_component);
item->component = crx_component;
item->last_check = base::TimeTicks::Now();
item->crx_urls.clear();
item->crx_diffurls.clear();
item->previous_version = crx_component.version;
item->next_version = base::Version();
item->previous_fp = crx_component.fingerprint;
item->next_fp.clear();
item->on_demand = update_context->is_foreground;
item->diff_update_failed = false;
item->error_category = 0;
item->error_code = 0;
item->extra_code1 = 0;
item->diff_error_category = 0;
item->diff_error_code = 0;
item->diff_extra_code1 = 0;
item->download_metrics.clear();
CrxUpdateItem* item_ptr = item.get();
update_context_->update_items[item_ptr->id] = std::move(item);
ChangeItemState(item_ptr, CrxUpdateItem::State::kChecking);
}
update_checker_->CheckForUpdates(
update_context_->update_items, extra_request_parameters_,
update_context_->enabled_component_updates,
base::Bind(&ActionUpdateCheck::UpdateCheckComplete,
base::Unretained(this)));
}
void ActionUpdateCheck::UpdateCheckComplete(
int error,
const UpdateResponse::Results& results,
int retry_after_sec) {
DCHECK(thread_checker_.CalledOnValidThread());
update_context_->retry_after_sec_ = retry_after_sec;
if (!error)
OnUpdateCheckSucceeded(results);
else
OnUpdateCheckFailed(error);
}
void ActionUpdateCheck::OnUpdateCheckSucceeded(
const UpdateResponse::Results& results) {
DCHECK(thread_checker_.CalledOnValidThread());
VLOG(1) << "Update check succeeded.";
std::vector<UpdateResponse::Result>::const_iterator it;
for (it = results.list.begin(); it != results.list.end(); ++it) {
CrxUpdateItem* crx = FindUpdateItemById(it->extension_id);
if (!crx)
continue;
if (crx->state != CrxUpdateItem::State::kChecking) {
NOTREACHED();
continue; // Not updating this CRX now.
}
if (it->manifest.version.empty()) {
// No version means no update available.
ChangeItemState(crx, CrxUpdateItem::State::kNoUpdate);
VLOG(1) << "No update available for CRX: " << crx->id;
continue;
}
if (!IsVersionNewer(crx->component.version, it->manifest.version)) {
// The CRX is up to date.
ChangeItemState(crx, CrxUpdateItem::State::kUpToDate);
VLOG(1) << "Component already up to date: " << crx->id;
continue;
}
if (!it->manifest.browser_min_version.empty()) {
if (IsVersionNewer(browser_version_, it->manifest.browser_min_version)) {
// The CRX is not compatible with this Chrome version.
VLOG(1) << "Ignoring incompatible CRX: " << crx->id;
ChangeItemState(crx, CrxUpdateItem::State::kNoUpdate);
continue;
}
}
if (it->manifest.packages.size() != 1) {
// Assume one and only one package per CRX.
VLOG(1) << "Ignoring multiple packages for CRX: " << crx->id;
ChangeItemState(crx, CrxUpdateItem::State::kNoUpdate);
continue;
}
// Parse the members of the result and queue an upgrade for this CRX.
crx->next_version = base::Version(it->manifest.version);
VLOG(1) << "Update found for CRX: " << crx->id;
const auto& package(it->manifest.packages[0]);
crx->next_fp = package.fingerprint;
// Resolve the urls by combining the base urls with the package names.
for (size_t i = 0; i != it->crx_urls.size(); ++i) {
const GURL url(it->crx_urls[i].Resolve(package.name));
if (url.is_valid())
crx->crx_urls.push_back(url);
}
for (size_t i = 0; i != it->crx_diffurls.size(); ++i) {
const GURL url(it->crx_diffurls[i].Resolve(package.namediff));
if (url.is_valid())
crx->crx_diffurls.push_back(url);
}
crx->hash_sha256 = package.hash_sha256;
crx->hashdiff_sha256 = package.hashdiff_sha256;
ChangeItemState(crx, CrxUpdateItem::State::kCanUpdate);
update_context_->queue.push(crx->id);
}
// All components that are not included in the update response are
// considered up to date.
ChangeAllItemsState(CrxUpdateItem::State::kChecking,
CrxUpdateItem::State::kUpToDate);
if (update_context_->queue.empty()) {
VLOG(1) << "Update check completed but no update is needed.";
UpdateComplete(Error::NONE);
return;
}
// Starts the execution flow of updating the CRXs in this context.
UpdateCrx();
}
void ActionUpdateCheck::OnUpdateCheckFailed(int error) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(error);
VLOG(1) << "Update check failed." << error;
ChangeAllItemsState(CrxUpdateItem::State::kChecking,
CrxUpdateItem::State::kNoUpdate);
UpdateComplete(Error::UPDATE_CHECK_ERROR);
}
} // namespace update_client
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