blob: c83b328010531ac8c5a01e27bff0b5f7258b1470 [file] [log] [blame]
// Copyright (c) 2011 The Chromium OS 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 "update_engine/omaha_response_handler_action.h"
#include <string>
#include <base/logging.h>
#include "update_engine/delta_performer.h"
#include "update_engine/prefs_interface.h"
#include "update_engine/utils.h"
using std::string;
namespace chromeos_update_engine {
const char OmahaResponseHandlerAction::kDeadlineFile[] =
"/tmp/update-check-response-deadline";
OmahaResponseHandlerAction::OmahaResponseHandlerAction(PrefsInterface* prefs)
: prefs_(prefs),
got_no_update_response_(false),
key_path_(DeltaPerformer::kUpdatePayloadPublicKeyPath) {}
void OmahaResponseHandlerAction::PerformAction() {
CHECK(HasInputObject());
ScopedActionCompleter completer(processor_, this);
const OmahaResponse& response = GetInputObject();
if (!response.update_exists) {
got_no_update_response_ = true;
LOG(INFO) << "There are no updates. Aborting.";
return;
}
install_plan_.download_url = response.codebase;
install_plan_.size = response.size;
install_plan_.download_hash = response.hash;
install_plan_.is_resume =
DeltaPerformer::CanResumeUpdate(prefs_, response.hash);
if (!install_plan_.is_resume) {
LOG_IF(WARNING, !DeltaPerformer::ResetUpdateProgress(prefs_, false))
<< "Unable to reset the update progress.";
LOG_IF(WARNING, !prefs_->SetString(kPrefsUpdateCheckResponseHash,
response.hash))
<< "Unable to save the update check response hash.";
}
TEST_AND_RETURN(GetInstallDev(
(!boot_device_.empty() ? boot_device_ : utils::BootDevice()),
&install_plan_.install_path));
install_plan_.kernel_install_path =
utils::BootKernelDevice(install_plan_.install_path);
TEST_AND_RETURN(HasOutputPipe());
if (HasOutputPipe())
SetOutputObject(install_plan_);
LOG(INFO) << "Using this install plan:";
install_plan_.Dump();
// Send the deadline data (if any) to Chrome through a file. This is a pretty
// hacky solution but should be OK for now.
//
// TODO(petkov): Rearchitect this to avoid communication through a
// file. Ideallly, we would include this information in D-Bus's GetStatus
// method and UpdateStatus signal. A potential issue is that update_engine may
// be unresponsive during an update download.
utils::WriteFile(kDeadlineFile,
response.deadline.data(),
response.deadline.size());
chmod(kDeadlineFile, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
completer.set_code(kActionCodeSuccess);
}
bool OmahaResponseHandlerAction::GetInstallDev(const std::string& boot_dev,
std::string* install_dev) {
TEST_AND_RETURN_FALSE(utils::StringHasPrefix(boot_dev, "/dev/"));
string ret(boot_dev);
string::reverse_iterator it = ret.rbegin(); // last character in string
// Right now, we just switch '3' and '5' partition numbers.
TEST_AND_RETURN_FALSE((*it == '3') || (*it == '5'));
*it = (*it == '3') ? '5' : '3';
*install_dev = ret;
return true;
}
} // namespace chromeos_update_engine