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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sandbox/policy/win/sandbox_diagnostics.h"
#include <stddef.h>
#include <string>
#include <utility>
#include <vector>
#include "base/json/json_reader.h"
#include "base/task/sequenced_task_runner.h"
#include "base/values.h"
namespace sandbox {
namespace policy {
namespace {
// Runs on a non-sandbox thread to ensure that response callback is not
// invoked from sandbox process and job tracker thread, and that conversion
// work does not block process or job registration. Converts |policies|
// into base::Value form, then invokes |response| on the same sequence.
static void ConvertToValuesAndRespond(
std::unique_ptr<PolicyList> policies,
base::OnceCallback<void(base::Value)> response) {
base::Value::List policy_values;
for (auto&& item : *policies) {
auto snapshot = base::JSONReader::ReadAndReturnValueWithError(
item->JsonString(), base::JSON_PARSE_RFC);
CHECK(snapshot.has_value());
policy_values.Append(std::move(*snapshot));
}
std::move(response).Run(base::Value(std::move(policy_values)));
}
// Runs on a non-sandbox thread to ensure that response callback is not
// invoked from sandbox process and job tracker thread.
static void RespondWithEmptyList(
base::OnceCallback<void(base::Value)> response) {
base::Value empty(base::Value::Type::LIST);
std::move(response).Run(std::move(empty));
}
} // namespace
ServiceManagerDiagnosticsReceiver::ServiceManagerDiagnosticsReceiver(
scoped_refptr<base::SequencedTaskRunner> origin_task_runner,
base::OnceCallback<void(base::Value)> response)
: response_(std::move(response)), origin_task_runner_(origin_task_runner) {}
ServiceManagerDiagnosticsReceiver::~ServiceManagerDiagnosticsReceiver() {}
// This is called by the sandbox's process and job tracking thread and must
// return quickly.
void ServiceManagerDiagnosticsReceiver::ReceiveDiagnostics(
std::unique_ptr<PolicyList> policies) {
// Need to run the conversion work on the origin thread.
origin_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&ConvertToValuesAndRespond, std::move(policies),
std::move(response_)));
}
// This is called by the sandbox's process and job tracking thread and must
// return quickly so we post to the origin thread.
void ServiceManagerDiagnosticsReceiver::OnError(ResultCode error) {
origin_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&RespondWithEmptyList, std::move(response_)));
}
} // namespace policy
} // namespace sandbox
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