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// Copyright 2019 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 <brillo/dbus/introspectable_helper.h>
#include <memory>
#include <base/bind.h>
#include <dbus/dbus-shared.h>
namespace brillo {
namespace dbus_utils {
using base::Bind;
using std::string;
using std::unique_ptr;
void IntrospectableInterfaceHelper::AddInterfaceXml(string xml) {
interface_xmls.push_back(xml);
}
void IntrospectableInterfaceHelper::RegisterWithDBusObject(DBusObject* object) {
DBusInterface* itf = object->AddOrGetInterface(DBUS_INTERFACE_INTROSPECTABLE);
itf->AddMethodHandler("Introspect", GetHandler());
}
IntrospectableInterfaceHelper::IntrospectCallback
IntrospectableInterfaceHelper::GetHandler() {
return Bind(
[](const string& xml, StringResponse response) { response->Return(xml); },
GetXmlString());
}
string IntrospectableInterfaceHelper::GetXmlString() {
constexpr const char header[] =
"<!DOCTYPE node PUBLIC "
"\"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
"\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
"\n"
"<node>\n"
" <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
" <method name=\"Introspect\">\n"
" <arg name=\"data\" direction=\"out\" type=\"s\"/>\n"
" </method>\n"
" </interface>\n"
" <interface name=\"org.freedesktop.DBus.Properties\">\n"
" <method name=\"Get\">\n"
" <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
" <arg name=\"propname\" direction=\"in\" type=\"s\"/>\n"
" <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
" </method>\n"
" <method name=\"Set\">\n"
" <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
" <arg name=\"propname\" direction=\"in\" type=\"s\"/>\n"
" <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
" </method>\n"
" <method name=\"GetAll\">\n"
" <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
" <arg name=\"props\" direction=\"out\" type=\"a{sv}\"/>\n"
" </method>\n"
" </interface>\n";
constexpr const char footer[] = "</node>\n";
size_t result_len = strlen(header) + strlen(footer);
for (const string& xml : interface_xmls) {
result_len += xml.size();
}
string result = header;
result.reserve(result_len + 1); // +1 for null terminator
for (const string& xml : interface_xmls) {
result.append(xml);
}
result.append(footer);
return result;
}
} // namespace dbus_utils
} // namespace brillo
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