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// Copyright 2014 The Chromium OS 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 <chromeos/dbus/utils.h>
#include <base/bind.h>
#include <base/memory/scoped_ptr.h>
#include <chromeos/any.h>
#include <chromeos/errors/error_codes.h>
namespace chromeos {
namespace dbus_utils {
namespace {
// Passes |method_call| to |handler| and passes the response to
// |response_sender|. If |handler| returns NULL, an empty response is created
// and sent.
void HandleSynchronousDBusMethodCall(
const MethodCallHandler& handler,
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender) {
scoped_ptr<dbus::Response> response(handler.Run(method_call).release());
if (!response)
response = dbus::Response::FromMethodCall(method_call);
response_sender.Run(response.Pass());
}
} // namespace
std::unique_ptr<dbus::Response> CreateDBusErrorResponse(
dbus::MethodCall* method_call,
const std::string& code,
const std::string& message) {
auto resp = dbus::ErrorResponse::FromMethodCall(method_call, code, message);
return std::unique_ptr<dbus::Response>(resp.release());
}
std::unique_ptr<dbus::Response> GetDBusError(dbus::MethodCall* method_call,
const chromeos::Error* error) {
std::string error_code = DBUS_ERROR_FAILED; // Default error code.
std::string error_message;
// Special case for "dbus" error domain.
// Pop the error code and message from the error chain and use them as the
// actual D-Bus error message.
if (error->GetDomain() == errors::dbus::kDomain) {
error_code = error->GetCode();
error_message = error->GetMessage();
error = error->GetInnerError();
}
// Append any inner errors to the error message.
while (error) {
// Format error string as "domain/code:message".
if (!error_message.empty())
error_message += ';';
error_message += error->GetDomain() + '/' + error->GetCode() + ':' +
error->GetMessage();
error = error->GetInnerError();
}
return CreateDBusErrorResponse(method_call, error_code, error_message);
}
dbus::ExportedObject::MethodCallCallback GetExportableDBusMethod(
const MethodCallHandler& handler) {
return base::Bind(&HandleSynchronousDBusMethodCall, handler);
}
} // namespace dbus_utils
} // namespace chromeos
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