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// Copyright (C) 2012 The Android Open Source Project
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdint.h>
#include <string>
#include <base/macros.h>
#include <base/time/time.h>
#include <gtest/gtest_prod.h> // for FRIEND_TEST
#include "update_engine/common/platform_constants.h"
#include "update_engine/image_properties.h"
// This gathers local system information and prepares info used by the
// Omaha request action.
namespace chromeos_update_engine {
class SystemState;
// This class encapsulates the data Omaha gets for the request, along with
// essential state needed for the processing of the request/response. The
// strings in this struct should not be XML escaped.
// TODO(jaysri): chromium-os:39752 tracks the need to rename this class to
// reflect its lifetime more appropriately.
class OmahaRequestParams {
explicit OmahaRequestParams(SystemState* system_state)
: system_state_(system_state),
max_update_checks_allowed_(kDefaultMaxUpdateChecks) {}
OmahaRequestParams(SystemState* system_state,
const std::string& in_os_platform,
const std::string& in_os_version,
const std::string& in_os_sp,
const std::string& in_os_board,
const std::string& in_app_id,
const std::string& in_app_version,
const std::string& in_app_lang,
const std::string& in_target_channel,
const std::string& in_hwid,
const std::string& in_fw_version,
const std::string& in_ec_version,
bool in_delta_okay,
bool in_interactive,
const std::string& in_update_url,
const std::string& in_target_version_prefix)
: system_state_(system_state),
max_update_checks_allowed_(kDefaultMaxUpdateChecks) {
image_props_.board = in_os_board;
image_props_.product_id = in_app_id;
image_props_.canary_product_id = in_app_id;
image_props_.version = in_app_version;
image_props_.current_channel = in_target_channel;
mutable_image_props_.target_channel = in_target_channel;
mutable_image_props_.is_powerwash_allowed = false;
virtual ~OmahaRequestParams();
// Setters and getters for the various properties.
inline std::string os_platform() const { return os_platform_; }
inline std::string os_version() const { return os_version_; }
inline std::string os_sp() const { return os_sp_; }
inline std::string os_board() const { return image_props_.board; }
inline std::string os_build_fingerprint() const {
return image_props_.build_fingerprint;
inline std::string board_app_id() const { return image_props_.product_id; }
inline std::string canary_app_id() const {
return image_props_.canary_product_id;
inline void set_app_id(const std::string& app_id) {
image_props_.product_id = app_id;
image_props_.canary_product_id = app_id;
inline std::string app_lang() const { return app_lang_; }
inline std::string hwid() const { return hwid_; }
inline std::string fw_version() const { return fw_version_; }
inline std::string ec_version() const { return ec_version_; }
inline void set_app_version(const std::string& version) {
image_props_.version = version;
inline std::string app_version() const { return image_props_.version; }
inline std::string current_channel() const {
return image_props_.current_channel;
inline std::string target_channel() const {
return mutable_image_props_.target_channel;
inline std::string download_channel() const { return download_channel_; }
// Can client accept a delta ?
inline void set_delta_okay(bool ok) { delta_okay_ = ok; }
inline bool delta_okay() const { return delta_okay_; }
// True if this is a user-initiated update check.
inline void set_interactive(bool interactive) { interactive_ = interactive; }
inline bool interactive() const { return interactive_; }
inline void set_update_url(const std::string& url) { update_url_ = url; }
inline std::string update_url() const { return update_url_; }
inline void set_target_version_prefix(const std::string& prefix) {
target_version_prefix_ = prefix;
inline std::string target_version_prefix() const {
return target_version_prefix_;
inline void set_wall_clock_based_wait_enabled(bool enabled) {
wall_clock_based_wait_enabled_ = enabled;
inline bool wall_clock_based_wait_enabled() const {
return wall_clock_based_wait_enabled_;
inline void set_waiting_period(base::TimeDelta period) {
waiting_period_ = period;
base::TimeDelta waiting_period() const { return waiting_period_; }
inline void set_update_check_count_wait_enabled(bool enabled) {
update_check_count_wait_enabled_ = enabled;
inline bool update_check_count_wait_enabled() const {
return update_check_count_wait_enabled_;
inline void set_min_update_checks_needed(int64_t min) {
min_update_checks_needed_ = min;
inline int64_t min_update_checks_needed() const {
return min_update_checks_needed_;
inline void set_max_update_checks_allowed(int64_t max) {
max_update_checks_allowed_ = max;
inline int64_t max_update_checks_allowed() const {
return max_update_checks_allowed_;
// True if we're trying to update to a more stable channel.
// i.e. index(target_channel) > index(current_channel).
virtual bool to_more_stable_channel() const;
// Returns the app id corresponding to the current value of the
// download channel.
virtual std::string GetAppId() const;
// Suggested defaults
static const char kOsVersion[];
static const char kIsPowerwashAllowedKey[];
static const int64_t kDefaultMinUpdateChecks = 0;
static const int64_t kDefaultMaxUpdateChecks = 8;
// Initializes all the data in the object. Non-empty
// |in_app_version| or |in_update_url| prevents automatic detection
// of the parameter. Returns true on success, false otherwise.
bool Init(const std::string& in_app_version,
const std::string& in_update_url,
bool in_interactive);
// Permanently changes the release channel to |channel|. Performs a
// powerwash, if required and allowed.
// Returns true on success, false otherwise. Note: This call will fail if
// there's a channel change pending already. This is to serialize all the
// channel changes done by the user in order to avoid having to solve
// numerous edge cases around ensuring the powerwash happens as intended in
// all such cases.
virtual bool SetTargetChannel(const std::string& channel,
bool is_powerwash_allowed,
std::string* error_message);
// Updates the download channel for this particular attempt from the current
// value of target channel. This method takes a "snapshot" of the current
// value of target channel and uses it for all subsequent Omaha requests for
// this attempt (i.e. initial request as well as download progress/error
// event requests). The snapshot will be updated only when either this method
// or Init is called again.
virtual void UpdateDownloadChannel();
virtual bool is_powerwash_allowed() const {
return mutable_image_props_.is_powerwash_allowed;
// Check if the provided update URL is official, meaning either the default
// autoupdate server or the autoupdate autotest server.
virtual bool IsUpdateUrlOfficial() const;
// For unit-tests.
void set_root(const std::string& root);
void set_current_channel(const std::string& channel) {
image_props_.current_channel = channel;
void set_target_channel(const std::string& channel) {
mutable_image_props_.target_channel = channel;
FRIEND_TEST(OmahaRequestParamsTest, IsValidChannelTest);
FRIEND_TEST(OmahaRequestParamsTest, ChannelIndexTest);
FRIEND_TEST(OmahaRequestParamsTest, ToMoreStableChannelFlagTest);
FRIEND_TEST(OmahaRequestParamsTest, CollectECFWVersionsTest);
// Returns true if |channel| is a valid channel, false otherwise.
bool IsValidChannel(const std::string& channel) const;
// Returns the index of the given channel.
int GetChannelIndex(const std::string& channel) const;
// Returns True if we should store the fw/ec versions based on our hwid_.
// Compares hwid to a set of whitelisted prefixes.
bool CollectECFWVersions() const;
// These are individual helper methods to initialize the said properties from
// the LSB value.
void SetTargetChannelFromLsbValue();
void SetCurrentChannelFromLsbValue();
void SetIsPowerwashAllowedFromLsbValue();
// Initializes the required properties from the LSB value.
void InitFromLsbValue();
// Gets the machine type (e.g. "i686").
std::string GetMachineType() const;
// Global system context.
SystemState* system_state_;
// The system image properties.
ImageProperties image_props_;
MutableImageProperties mutable_image_props_;
// Basic properties of the OS and Application that go into the Omaha request.
std::string os_platform_;
std::string os_version_;
std::string os_sp_;
std::string app_lang_;
// There are three channel values we deal with:
// * The channel we got the image we are running from or "current channel"
// stored in |image_props_.current_channel|.
// * The release channel we are tracking, where we should get updates from,
// stored in |mutable_image_props_.target_channel|. This channel is
// normally the same as the current_channel, except when the user changes
// the channel. In that case it'll have the release channel the user
// switched to, regardless of whether we downloaded an update from that
// channel or not, or if we are in the middle of a download from a
// previously selected channel (as opposed to download channel
// which gets updated only at the start of next download).
// * The channel from which we're downloading the payload. This should
// normally be the same as target channel. But if the user made another
// channel change after we started the download, then they'd be different,
// in which case, we'd detect elsewhere that the target channel has been
// changed and cancel the current download attempt.
std::string download_channel_;
std::string hwid_; // Hardware Qualification ID of the client
std::string fw_version_; // Chrome OS Firmware Version.
std::string ec_version_; // Chrome OS EC Version.
bool delta_okay_; // If this client can accept a delta
bool interactive_; // Whether this is a user-initiated update check
// The URL to send the Omaha request to.
std::string update_url_;
// Prefix of the target OS version that the enterprise wants this device
// to be pinned to. It's empty otherwise.
std::string target_version_prefix_;
// True if scattering is enabled, in which case waiting_period_ specifies the
// amount of absolute time that we've to wait for before sending a request to
// Omaha.
bool wall_clock_based_wait_enabled_;
base::TimeDelta waiting_period_;
// True if scattering is enabled to denote the number of update checks
// we've to skip before we can send a request to Omaha. The min and max
// values establish the bounds for a random number to be chosen within that
// range to enable such a wait.
bool update_check_count_wait_enabled_;
int64_t min_update_checks_needed_;
int64_t max_update_checks_allowed_;
// When reading files, prepend root_ to the paths. Useful for testing.
std::string root_;
// TODO(jaysri): Uncomment this after fixing unit tests, as part of
// chromium-os:39752
// DISALLOW_COPY_AND_ASSIGN(OmahaRequestParams);
} // namespace chromeos_update_engine