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      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 "shill/dbus/chromeos_third_party_vpn_dbus_adaptor.h"
     18 
     19 #include <base/logging.h>
     20 #if defined(__ANDROID__)
     21 #include <dbus/service_constants.h>
     22 #else
     23 #include <chromeos/dbus/service_constants.h>
     24 #endif  // __ANDROID__
     25 
     26 #include "shill/logging.h"
     27 #include "shill/service.h"
     28 #include "shill/vpn/third_party_vpn_driver.h"
     29 
     30 using brillo::dbus_utils::AsyncEventSequencer;
     31 using brillo::dbus_utils::ExportedObjectManager;
     32 
     33 namespace shill {
     34 
     35 namespace Logging {
     36 
     37 static auto kModuleLogScope = ScopeLogger::kVPN;
     38 static std::string ObjectID(const ChromeosThirdPartyVpnDBusAdaptor* v) {
     39   return "(third_party_vpn_dbus_adaptor)";
     40 }
     41 
     42 }  // namespace Logging
     43 
     44 namespace {
     45 
     46 // The API converts external connection state to internal one
     47 bool ConvertConnectState(
     48     ChromeosThirdPartyVpnDBusAdaptor::ExternalConnectState external_state,
     49     Service::ConnectState* internal_state) {
     50   switch (external_state) {
     51     case ChromeosThirdPartyVpnDBusAdaptor::kStateConnected:
     52       *internal_state = Service::kStateOnline;
     53       break;
     54     case ChromeosThirdPartyVpnDBusAdaptor::kStateFailure:
     55       *internal_state = Service::kStateFailure;
     56       break;
     57     default:
     58       return false;
     59   }
     60   return true;
     61 }
     62 
     63 }  // namespace
     64 
     65 ChromeosThirdPartyVpnDBusAdaptor::ChromeosThirdPartyVpnDBusAdaptor(
     66     const scoped_refptr<dbus::Bus>& bus,
     67     ThirdPartyVpnDriver* client)
     68     : org::chromium::flimflam::ThirdPartyVpnAdaptor(this),
     69       ChromeosDBusAdaptor(bus,
     70                           kObjectPathBase + client->object_path_suffix()),
     71       client_(client) {
     72   // Register DBus object.
     73   RegisterWithDBusObject(dbus_object());
     74   dbus_object()->RegisterAndBlock();
     75 }
     76 
     77 ChromeosThirdPartyVpnDBusAdaptor::~ChromeosThirdPartyVpnDBusAdaptor() {
     78   dbus_object()->UnregisterAsync();
     79 }
     80 
     81 void ChromeosThirdPartyVpnDBusAdaptor::EmitPacketReceived(
     82     const std::vector<uint8_t>& packet) {
     83   SLOG(this, 2) << __func__;
     84   SendOnPacketReceivedSignal(packet);
     85 }
     86 
     87 void ChromeosThirdPartyVpnDBusAdaptor::EmitPlatformMessage(uint32_t message) {
     88   SLOG(this, 2) << __func__ << "(" << message << ")";
     89   SendOnPlatformMessageSignal(message);
     90 }
     91 
     92 bool ChromeosThirdPartyVpnDBusAdaptor::SetParameters(
     93     brillo::ErrorPtr* error,
     94     const std::map<std::string, std::string>& parameters,
     95     std::string* warning_message) {
     96   SLOG(this, 2) << __func__;
     97   std::string error_message;
     98   Error e;
     99   client_->SetParameters(parameters, &error_message, warning_message);
    100   if (!error_message.empty()) {
    101     e.Populate(Error::kInvalidArguments, error_message);
    102   }
    103   return !e.ToChromeosError(error);
    104 }
    105 
    106 bool ChromeosThirdPartyVpnDBusAdaptor::UpdateConnectionState(
    107     brillo::ErrorPtr* error, uint32_t connection_state) {
    108   SLOG(this, 2) << __func__ << "(" << connection_state << ")";
    109   // Externally supported states are from Service::kStateConnected to
    110   // Service::kStateOnline.
    111   Service::ConnectState internal_state;
    112   std::string error_message;
    113   Error e;
    114   if (ConvertConnectState(static_cast<ExternalConnectState>(connection_state),
    115                           &internal_state)) {
    116     client_->UpdateConnectionState(internal_state, &error_message);
    117     if (!error_message.empty()) {
    118       e.Populate(Error::kInvalidArguments, error_message);
    119     }
    120   } else {
    121     e.Populate(Error::kNotSupported, "Connection state is not supported");
    122   }
    123   return !e.ToChromeosError(error);
    124 }
    125 
    126 bool ChromeosThirdPartyVpnDBusAdaptor::SendPacket(
    127     brillo::ErrorPtr* error,
    128     const std::vector<uint8_t>& ip_packet) {
    129   SLOG(this, 2) << __func__;
    130   std::string error_message;
    131   client_->SendPacket(ip_packet, &error_message);
    132   Error e;
    133   if (!error_message.empty()) {
    134     e.Populate(Error::kWrongState, error_message);
    135   }
    136   return !e.ToChromeosError(error);
    137 }
    138 
    139 }  // namespace shill
    140