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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/tracing/chrome_tracing_delegate.h"
#include <string_view>
#include <utility>
#include "base/command_line.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_path.h"
#include "base/files/file_path_watcher.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/json/json_writer.h"
#include "base/path_service.h"
#include "base/run_loop.h"
#include "base/strings/pattern.h"
#include "base/test/bind.h"
#include "base/test/test_proto_loader.h"
#include "base/threading/thread_restrictions.h"
#include "base/trace_event/named_trigger.h"
#include "build/build_config.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/common/pref_names.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/tracing/common/background_tracing_state_manager.h"
#include "components/tracing/common/pref_names.h"
#include "content/public/browser/background_tracing_manager.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/tracing_controller.h"
#include "content/public/test/background_tracing_test_support.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/test_utils.h"
#include "services/tracing/public/cpp/trace_startup_config.h"
#include "services/tracing/public/cpp/tracing_features.h"
namespace {
class TestBackgroundTracingHelper
: public content::BackgroundTracingManager::EnabledStateTestObserver {
public:
TestBackgroundTracingHelper() {
content::AddBackgroundTracingEnabledStateObserverForTesting(this);
}
~TestBackgroundTracingHelper() {
content::RemoveBackgroundTracingEnabledStateObserverForTesting(this);
}
void OnScenarioActive(const std::string& scenario_name) override {
wait_for_scenario_active_.Quit();
}
void OnScenarioIdle(const std::string& scenario_name) override {
wait_for_scenario_idle_.Quit();
}
void OnTraceReceived(const std::string& proto_content) override {
wait_for_trace_received_.Quit();
}
void WaitForScenarioActive() { wait_for_scenario_active_.Run(); }
void WaitForScenarioIdle() { wait_for_scenario_idle_.Run(); }
void WaitForTraceReceived() { wait_for_trace_received_.Run(); }
private:
base::RunLoop wait_for_scenario_active_;
base::RunLoop wait_for_scenario_idle_;
base::RunLoop wait_for_trace_received_;
};
} // namespace
namespace tracing {
perfetto::protos::gen::ChromeFieldTracingConfig ParseFieldTracingConfigFromText(
const std::string& proto_text) {
base::ScopedAllowBlockingForTesting allow_blocking;
base::TestProtoLoader config_loader(
base::PathService::CheckedGet(base::DIR_GEN_TEST_DATA_ROOT)
.Append(
FILE_PATH_LITERAL("third_party/perfetto/protos/perfetto/"
"config/chrome/scenario_config.descriptor")),
"perfetto.protos.ChromeFieldTracingConfig");
std::string serialized_message;
config_loader.ParseFromText(proto_text, serialized_message);
perfetto::protos::gen::ChromeFieldTracingConfig destination;
destination.ParseFromString(serialized_message);
return destination;
}
class ChromeTracingDelegateBrowserTest : public InProcessBrowserTest {
public:
ChromeTracingDelegateBrowserTest() = default;
void SetUpOnMainThread() override {
InProcessBrowserTest::SetUpOnMainThread();
PrefService* local_state = g_browser_process->local_state();
DCHECK(local_state);
local_state->SetBoolean(metrics::prefs::kMetricsReportingEnabled, true);
content::TracingController::GetInstance(); // Create tracing agents.
}
bool StartScenario(
content::BackgroundTracingManager::DataFiltering data_filtering) {
constexpr const char kScenarioConfig[] = R"pb(
scenarios: {
scenario_name: "test_scenario"
start_rules: { manual_trigger_name: "start_trigger" }
upload_rules: { manual_trigger_name: "upload_trigger" }
trace_config: {
data_sources: {
config: {
name: "track_event"
track_event_config: {
disabled_categories: [ "*" ],
enabled_categories: [ "toplevel" ]
}
}
}
data_sources: { config: { name: "org.chromium.trace_metadata2" } }
}
}
)pb";
EXPECT_TRUE(content::BackgroundTracingManager::GetInstance()
.InitializeFieldScenarios(
ParseFieldTracingConfigFromText(kScenarioConfig),
data_filtering, false, 0));
return base::trace_event::EmitNamedTrigger("start_trigger");
}
void TriggerPreemptiveScenario(
const std::string& trigger_name = "upload_trigger") {
base::trace_event::EmitNamedTrigger(trigger_name);
}
};
std::string GetSessionStateJson() {
PrefService* local_state = g_browser_process->local_state();
DCHECK(local_state);
const base::Value::Dict& state =
local_state->GetDict(tracing::kBackgroundTracingSessionState);
std::string json;
EXPECT_TRUE(base::JSONWriter::Write(state, &json));
return json;
}
void SetSessionState(base::Value::Dict dict) {
PrefService* local_state = g_browser_process->local_state();
local_state->Set(tracing::kBackgroundTracingSessionState,
base::Value(std::move(dict)));
}
// If we need a PII-stripped trace, any existing OTR session should block the
// trace.
IN_PROC_BROWSER_TEST_F(ChromeTracingDelegateBrowserTest,
ExistingIncognitoSessionBlockingTraceStart) {
EXPECT_TRUE(chrome::ExecuteCommand(browser(), IDC_NEW_INCOGNITO_WINDOW));
EXPECT_TRUE(BrowserList::IsOffTheRecordBrowserActive());
EXPECT_FALSE(
StartScenario(content::BackgroundTracingManager::ANONYMIZE_DATA));
}
// If we need a PII-stripped trace, OTR sessions that ended before tracing
// should block the trace (because traces could theoretically include stale
// memory from those sessions).
IN_PROC_BROWSER_TEST_F(ChromeTracingDelegateBrowserTest,
FinishedIncognitoSessionBlockingTraceStart) {
Browser* incognito_browser = CreateIncognitoBrowser(browser()->profile());
EXPECT_TRUE(BrowserList::IsOffTheRecordBrowserActive());
CloseBrowserSynchronously(incognito_browser);
EXPECT_FALSE(BrowserList::IsOffTheRecordBrowserActive());
}
// If we need a PII-stripped trace, any new OTR session during tracing should
// block the finalization of the trace.
IN_PROC_BROWSER_TEST_F(ChromeTracingDelegateBrowserTest,
NewIncognitoSessionBlockingTraceFinalization) {
TestBackgroundTracingHelper background_tracing_helper;
EXPECT_TRUE(StartScenario(content::BackgroundTracingManager::ANONYMIZE_DATA));
background_tracing_helper.WaitForScenarioActive();
EXPECT_TRUE(chrome::ExecuteCommand(browser(), IDC_NEW_INCOGNITO_WINDOW));
EXPECT_TRUE(BrowserList::IsOffTheRecordBrowserActive());
TriggerPreemptiveScenario();
background_tracing_helper.WaitForScenarioIdle();
}
// If we need a PII-stripped trace, any OTR session that starts and ends during
// tracing should block the finalization of the trace.
IN_PROC_BROWSER_TEST_F(ChromeTracingDelegateBrowserTest,
ShortIncognitoSessionBlockingTraceFinalization) {
EXPECT_TRUE(StartScenario(content::BackgroundTracingManager::ANONYMIZE_DATA));
Browser* incognito_browser = CreateIncognitoBrowser(browser()->profile());
EXPECT_TRUE(BrowserList::IsOffTheRecordBrowserActive());
CloseBrowserSynchronously(incognito_browser);
EXPECT_FALSE(BrowserList::IsOffTheRecordBrowserActive());
TestBackgroundTracingHelper background_tracing_helper;
TriggerPreemptiveScenario();
background_tracing_helper.WaitForScenarioIdle();
}
} // namespace tracing
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