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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_dhcpcd_proxy.h"
     18 
     19 #include "shill/logging.h"
     20 
     21 using std::string;
     22 namespace shill {
     23 
     24 namespace Logging {
     25 static auto kModuleLogScope = ScopeLogger::kDHCP;
     26 static string ObjectID(ChromeosDHCPCDProxy* d) { return "(dhcpcd_proxy)"; }
     27 }
     28 
     29 ChromeosDHCPCDProxy::ChromeosDHCPCDProxy(const scoped_refptr<dbus::Bus>& bus,
     30                                          const std::string& service_name)
     31     : dhcpcd_proxy_(
     32         new org::chromium::dhcpcdProxy(bus, service_name)) {
     33   SLOG(this, 2) << "DHCPCDProxy(service=" << service_name << ").";
     34   // Do not register signal handlers, signals are processed by
     35   // ChromeosDHCPCDListener.
     36 }
     37 
     38 ChromeosDHCPCDProxy::~ChromeosDHCPCDProxy() {
     39   dhcpcd_proxy_->ReleaseObjectProxy(base::Bind(&base::DoNothing));
     40 }
     41 
     42 void ChromeosDHCPCDProxy::Rebind(const string& interface) {
     43   SLOG(DBus, nullptr, 2) << __func__;
     44   brillo::ErrorPtr error;
     45   if (!dhcpcd_proxy_->Rebind(interface, &error)) {
     46     LogDBusError(error, __func__, interface);
     47   }
     48 }
     49 
     50 void ChromeosDHCPCDProxy::Release(const string& interface) {
     51   SLOG(DBus, nullptr, 2) << __func__;
     52   brillo::ErrorPtr error;
     53   if (!dhcpcd_proxy_->Release(interface, &error)) {
     54     LogDBusError(error, __func__, interface);
     55   }
     56 }
     57 
     58 void ChromeosDHCPCDProxy::LogDBusError(const brillo::ErrorPtr& error,
     59                                        const string& method,
     60                                        const string& interface) {
     61   if (error->GetCode() == DBUS_ERROR_SERVICE_UNKNOWN ||
     62       error->GetCode() == DBUS_ERROR_NO_REPLY) {
     63     LOG(INFO) << method << ": dhcpcd daemon appears to have exited.";
     64   } else {
     65     LOG(FATAL) << "DBus error: " << method << " " << interface << ": "
     66                << error->GetCode() << ": " << error->GetMessage();
     67   }
     68 }
     69 
     70 }  // namespace shill
     71