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// Copyright 2018 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/component_updater/component_updater_command_line_config_policy.h"
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/stl_util.h"
#include "base/strings/string_split.h"
#include "base/strings/sys_string_conversions.h"
#include "build/build_config.h"
#include "components/component_updater/component_updater_switches.h"
namespace component_updater {
namespace {
// Debug values you can pass to --component-updater=value1,value2. Do not
// use these values in production code.
// Speed up the initial component checking.
const char kSwitchFastUpdate[] = "fast-update";
// Add "testrequest=1" attribute to the update check request.
const char kSwitchTestRequestParam[] = "test-request";
// Disables pings. Pings are the requests sent to the update server that report
// the success or the failure of component install or update attempts.
const char kSwitchDisablePings[] = "disable-pings";
// Sets the URL for updates.
const char kSwitchUrlSource[] = "url-source";
// Disables differential updates.
const char kSwitchDisableDeltaUpdates[] = "disable-delta-updates";
#if defined(OS_WIN)
// Disables background downloads.
const char kSwitchDisableBackgroundDownloads[] = "disable-background-downloads";
#endif // defined(OS_WIN)
// If there is an element of |vec| of the form |test|=.*, returns the right-
// hand side of that assignment. Otherwise, returns an empty string.
// The right-hand side may contain additional '=' characters, allowing for
// further nesting of switch arguments.
std::string GetSwitchArgument(const std::vector<std::string>& vec,
const char* test) {
if (vec.empty())
return std::string();
for (std::vector<std::string>::const_iterator it = vec.begin();
it != vec.end(); ++it) {
const std::size_t found = it->find("=");
if (found != std::string::npos) {
if (it->substr(0, found) == test) {
return it->substr(found + 1);
}
}
}
return std::string();
}
} // namespace
ComponentUpdaterCommandLineConfigPolicy::
ComponentUpdaterCommandLineConfigPolicy(const base::CommandLine* cmdline) {
DCHECK(cmdline);
// Parse comma-delimited debug flags.
std::vector<std::string> switch_values = base::SplitString(
cmdline->GetSwitchValueASCII(switches::kComponentUpdater), ",",
base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
#if defined(OS_WIN)
background_downloads_enabled_ =
!base::ContainsValue(switch_values, kSwitchDisableBackgroundDownloads);
#else
background_downloads_enabled_ = false;
#endif
deltas_enabled_ =
!base::ContainsValue(switch_values, kSwitchDisableDeltaUpdates);
fast_update_ = base::ContainsValue(switch_values, kSwitchFastUpdate);
pings_enabled_ = !base::ContainsValue(switch_values, kSwitchDisablePings);
test_request_ = base::ContainsValue(switch_values, kSwitchTestRequestParam);
const std::string switch_url_source =
GetSwitchArgument(switch_values, kSwitchUrlSource);
if (!switch_url_source.empty()) {
url_source_override_ = GURL(switch_url_source);
DCHECK(url_source_override_.is_valid());
}
}
bool ComponentUpdaterCommandLineConfigPolicy::BackgroundDownloadsEnabled()
const {
return background_downloads_enabled_;
}
bool ComponentUpdaterCommandLineConfigPolicy::DeltaUpdatesEnabled() const {
return deltas_enabled_;
}
bool ComponentUpdaterCommandLineConfigPolicy::FastUpdate() const {
return fast_update_;
}
bool ComponentUpdaterCommandLineConfigPolicy::PingsEnabled() const {
return pings_enabled_;
}
bool ComponentUpdaterCommandLineConfigPolicy::TestRequest() const {
return test_request_;
}
GURL ComponentUpdaterCommandLineConfigPolicy::UrlSourceOverride() const {
return url_source_override_;
}
} // namespace component_updater
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