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//
// Copyright (C) 2011 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
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "update_engine/omaha_request_params.h"
#include <errno.h>
#include <fcntl.h>
#include <sys/utsname.h>
#include <map>
#include <string>
#include <vector>
#include <base/files/file_util.h>
#include <base/strings/string_util.h>
#include <base/strings/stringprintf.h>
#include <brillo/key_value_store.h>
#include <brillo/strings/string_utils.h>
#include <policy/device_policy.h>
#include "update_engine/common/constants.h"
#include "update_engine/common/hardware_interface.h"
#include "update_engine/common/platform_constants.h"
#include "update_engine/common/utils.h"
#include "update_engine/system_state.h"
#define CALL_MEMBER_FN(object, member) ((object).*(member))
using std::map;
using std::string;
using std::vector;
namespace chromeos_update_engine {
const char OmahaRequestParams::kOsVersion[] = "Indy";
const char* kChannelsByStability[] = {
// This list has to be sorted from least stable to most stable channel.
"canary-channel",
"dev-channel",
"beta-channel",
"stable-channel",
};
OmahaRequestParams::~OmahaRequestParams() {
if (!root_.empty())
test::SetImagePropertiesRootPrefix(nullptr);
}
bool OmahaRequestParams::Init(const string& in_app_version,
const string& in_update_url,
bool in_interactive) {
LOG(INFO) << "Initializing parameters for this update attempt";
image_props_ = LoadImageProperties(system_state_);
mutable_image_props_ = LoadMutableImageProperties(system_state_);
// Sanity check the channel names.
if (!IsValidChannel(image_props_.current_channel))
image_props_.current_channel = "stable-channel";
if (!IsValidChannel(mutable_image_props_.target_channel))
mutable_image_props_.target_channel = image_props_.current_channel;
UpdateDownloadChannel();
LOG(INFO) << "Running from channel " << image_props_.current_channel;
os_platform_ = constants::kOmahaPlatformName;
if (!image_props_.system_version.empty())
os_version_ = image_props_.system_version;
else
os_version_ = OmahaRequestParams::kOsVersion;
if (!in_app_version.empty())
image_props_.version = in_app_version;
os_sp_ = image_props_.version + "_" + GetMachineType();
app_lang_ = "en-US";
hwid_ = system_state_->hardware()->GetHardwareClass();
if (CollectECFWVersions()) {
fw_version_ = system_state_->hardware()->GetFirmwareVersion();
ec_version_ = system_state_->hardware()->GetECVersion();
}
if (image_props_.current_channel == mutable_image_props_.target_channel) {
// deltas are only okay if the /.nodelta file does not exist. if we don't
// know (i.e. stat() returns some unexpected error), then err on the side of
// caution and say deltas are not okay.
struct stat stbuf;
delta_okay_ = (stat((root_ + "/.nodelta").c_str(), &stbuf) < 0) &&
(errno == ENOENT);
} else {
LOG(INFO) << "Disabling deltas as a channel change to "
<< mutable_image_props_.target_channel
<< " is pending, with is_powerwash_allowed="
<< utils::ToString(mutable_image_props_.is_powerwash_allowed);
// For now, disable delta updates if the current channel is different from
// the channel that we're sending to the update server because such updates
// are destined to fail -- the current rootfs hash will be different than
// the expected hash due to the different channel in /etc/lsb-release.
delta_okay_ = false;
}
if (in_update_url.empty())
update_url_ = image_props_.omaha_url;
else
update_url_ = in_update_url;
// Set the interactive flag accordingly.
interactive_ = in_interactive;
return true;
}
bool OmahaRequestParams::IsUpdateUrlOfficial() const {
return (update_url_ == constants::kOmahaDefaultAUTestURL ||
update_url_ == image_props_.omaha_url);
}
bool OmahaRequestParams::CollectECFWVersions() const {
return base::StartsWith(hwid_, string("SAMS ALEX"),
base::CompareCase::SENSITIVE) ||
base::StartsWith(hwid_, string("BUTTERFLY"),
base::CompareCase::SENSITIVE) ||
base::StartsWith(hwid_, string("LUMPY"),
base::CompareCase::SENSITIVE) ||
base::StartsWith(hwid_, string("PARROT"),
base::CompareCase::SENSITIVE) ||
base::StartsWith(hwid_, string("SPRING"),
base::CompareCase::SENSITIVE) ||
base::StartsWith(hwid_, string("SNOW"), base::CompareCase::SENSITIVE);
}
bool OmahaRequestParams::SetTargetChannel(const string& new_target_channel,
bool is_powerwash_allowed,
string* error_message) {
LOG(INFO) << "SetTargetChannel called with " << new_target_channel
<< ", Is Powerwash Allowed = "
<< utils::ToString(is_powerwash_allowed)
<< ". Current channel = " << image_props_.current_channel
<< ", existing target channel = "
<< mutable_image_props_.target_channel
<< ", download channel = " << download_channel_;
if (!IsValidChannel(new_target_channel)) {
string valid_channels = brillo::string_utils::JoinRange(
", ",
std::begin(kChannelsByStability),
std::end(kChannelsByStability));
if (error_message) {
*error_message = base::StringPrintf(
"Invalid channel name \"%s\", valid names are: %s",
new_target_channel.c_str(), valid_channels.c_str());
}
return false;
}
MutableImageProperties new_props;
new_props.target_channel = new_target_channel;
new_props.is_powerwash_allowed = is_powerwash_allowed;
if (!StoreMutableImageProperties(system_state_, new_props)) {
if (error_message)
*error_message = "Error storing the new channel value.";
return false;
}
mutable_image_props_ = new_props;
return true;
}
void OmahaRequestParams::UpdateDownloadChannel() {
if (download_channel_ != mutable_image_props_.target_channel) {
download_channel_ = mutable_image_props_.target_channel;
LOG(INFO) << "Download channel for this attempt = " << download_channel_;
}
}
string OmahaRequestParams::GetMachineType() const {
struct utsname buf;
string ret;
if (uname(&buf) == 0)
ret = buf.machine;
return ret;
}
bool OmahaRequestParams::IsValidChannel(const string& channel) const {
return GetChannelIndex(channel) >= 0;
}
void OmahaRequestParams::set_root(const string& root) {
root_ = root;
test::SetImagePropertiesRootPrefix(root_.c_str());
}
int OmahaRequestParams::GetChannelIndex(const string& channel) const {
for (size_t t = 0; t < arraysize(kChannelsByStability); ++t)
if (channel == kChannelsByStability[t])
return t;
return -1;
}
bool OmahaRequestParams::to_more_stable_channel() const {
int current_channel_index = GetChannelIndex(image_props_.current_channel);
int download_channel_index = GetChannelIndex(download_channel_);
return download_channel_index > current_channel_index;
}
string OmahaRequestParams::GetAppId() const {
return download_channel_ == "canary-channel" ? image_props_.canary_product_id
: image_props_.product_id;
}
} // namespace chromeos_update_engine