1//
2// Copyright (C) 2015 The Android Open Source Project
3//
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at
7//
8//      http://www.apache.org/licenses/LICENSE-2.0
9//
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15//
16
17#include "apmanager/dbus/shill_dbus_proxy.h"
18
19#include <base/bind.h>
20#include <brillo/errors/error.h>
21
22#if !defined(__ANDROID__)
23#include <chromeos/dbus/service_constants.h>
24#else
25#include <dbus/apmanager/dbus-constants.h>
26#endif  // __ANDROID__
27
28#include "apmanager/event_dispatcher.h"
29
30using std::string;
31
32namespace apmanager {
33
34ShillDBusProxy::ShillDBusProxy(
35    const scoped_refptr<dbus::Bus>& bus,
36    const base::Closure& service_appeared_callback,
37    const base::Closure& service_vanished_callback)
38    : manager_proxy_(new org::chromium::flimflam::ManagerProxy(bus)),
39      dispatcher_(EventDispatcher::GetInstance()),
40      service_appeared_callback_(service_appeared_callback),
41      service_vanished_callback_(service_vanished_callback),
42      service_available_(false) {
43  // Monitor service owner changes. This callback lives for the lifetime of
44  // the ObjectProxy.
45  manager_proxy_->GetObjectProxy()->SetNameOwnerChangedCallback(
46      base::Bind(&ShillDBusProxy::OnServiceOwnerChanged,
47                 weak_factory_.GetWeakPtr()));
48
49  // One time callback when service becomes available.
50  manager_proxy_->GetObjectProxy()->WaitForServiceToBeAvailable(
51      base::Bind(&ShillDBusProxy::OnServiceAvailable,
52                 weak_factory_.GetWeakPtr()));
53}
54
55ShillDBusProxy::~ShillDBusProxy() {}
56
57bool ShillDBusProxy::ClaimInterface(const string& interface_name) {
58  if (!service_available_) {
59    LOG(ERROR) << "ClaimInterface failed: service not available";
60    return false;
61  }
62  brillo::ErrorPtr error;
63  if (!manager_proxy_->ClaimInterface(kServiceName, interface_name, &error)) {
64    LOG(ERROR) << "Failed to claim interface from shill: "
65               << error->GetCode() << " " << error->GetMessage();
66    return false;
67  }
68  return true;
69}
70
71bool ShillDBusProxy::ReleaseInterface(const string& interface_name) {
72  if (!service_available_) {
73    LOG(ERROR) << "ReleaseInterface failed: service not available";
74    return false;
75  }
76  brillo::ErrorPtr error;
77  if (!manager_proxy_->ReleaseInterface(kServiceName, interface_name, &error)) {
78    LOG(ERROR) << "Failed to release interface from shill: "
79               << error->GetCode() << " " << error->GetMessage();
80    return false;
81  }
82  return true;
83}
84
85#if defined(__BRILLO__)
86bool ShillDBusProxy::SetupApModeInterface(string* interface_name) {
87  if (!service_available_) {
88    LOG(ERROR) << "SetupApModeInterface failed: service not available";
89    return false;
90  }
91  brillo::ErrorPtr error;
92  if (!manager_proxy_->SetupApModeInterface(interface_name, &error)) {
93    LOG(ERROR) << "Failed to setup AP mode interface from shill: "
94               << error->GetCode() << " " << error->GetMessage();
95    return false;
96  }
97  return true;
98}
99
100bool ShillDBusProxy::SetupStationModeInterface(string* interface_name) {
101  if (!service_available_) {
102    LOG(ERROR) << "SetupStationModeInterface failed: service not available";
103    return false;
104  }
105  brillo::ErrorPtr error;
106  if (!manager_proxy_->SetupStationModeInterface(interface_name, &error)) {
107    LOG(ERROR) << "Failed to setup station mode interface from shill: "
108               << error->GetCode() << " " << error->GetMessage();
109    return false;
110  }
111  return true;
112}
113#endif  // __BRILLO__
114
115void ShillDBusProxy::OnServiceAvailable(bool available) {
116  LOG(INFO) << __func__ << ": " << available;
117  // Nothing to be done if proxy service not available.
118  // The callback might invoke calls to the ObjectProxy, so defer the callback
119  // to event loop.
120  if (available && !service_appeared_callback_.is_null()) {
121    dispatcher_->PostTask(service_appeared_callback_);
122  } else if (!available && !service_vanished_callback_.is_null()) {
123    dispatcher_->PostTask(service_vanished_callback_);
124  }
125  service_available_ = available;
126}
127
128void ShillDBusProxy::OnServiceOwnerChanged(const string& old_owner,
129                                           const string& new_owner) {
130  LOG(INFO) << __func__ << " old: " << old_owner << " new: " << new_owner;
131  if (new_owner.empty()) {
132    OnServiceAvailable(false);
133  } else {
134    OnServiceAvailable(true);
135  }
136}
137
138}  // namespace apmanager
139