text: // Copyright 2018 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 "shill/dbus/chromeos_dhcpcd_proxy.h"
  
  #include "shill/logging.h"
  
  using std::string;
  namespace shill {
  
  namespace Logging {
  static auto kModuleLogScope = ScopeLogger::kDHCP;
  static string ObjectID(ChromeosDHCPCDProxy* d) { return "(dhcpcd_proxy)"; }
  }
  
  ChromeosDHCPCDProxy::ChromeosDHCPCDProxy(const scoped_refptr<dbus::Bus>& bus,
                                           const std::string& service_name)
      : dhcpcd_proxy_(
          new org::chromium::dhcpcdProxy(bus, service_name)) {
    SLOG(this, 2) << "DHCPCDProxy(service=" << service_name << ").";
    // Do not register signal handlers, signals are processed by
    // ChromeosDHCPCDListener.
  }
  
  ChromeosDHCPCDProxy::~ChromeosDHCPCDProxy() {
    dhcpcd_proxy_->ReleaseObjectProxy(base::Bind(&base::DoNothing));
  }
  
  void ChromeosDHCPCDProxy::Rebind(const string& interface) {
    SLOG(DBus, nullptr, 2) << __func__;
    brillo::ErrorPtr error;
    if (!dhcpcd_proxy_->Rebind(interface, &error)) {
      LogDBusError(error, __func__, interface);
    }
  }
  
  void ChromeosDHCPCDProxy::Release(const string& interface) {
    SLOG(DBus, nullptr, 2) << __func__;
    brillo::ErrorPtr error;
    if (!dhcpcd_proxy_->Release(interface, &error)) {
      LogDBusError(error, __func__, interface);
    }
  }
  
  void ChromeosDHCPCDProxy::LogDBusError(const brillo::ErrorPtr& error,
                                         const string& method,
                                         const string& interface) {
    if (error->GetCode() == DBUS_ERROR_SERVICE_UNKNOWN ||
        error->GetCode() == DBUS_ERROR_NO_REPLY) {
      LOG(INFO) << method << ": dhcpcd daemon appears to have exited.";
    } else {
      LOG(FATAL) << "DBus error: " << method << " " << interface << ": "
                 << error->GetCode() << ": " << error->GetMessage();
    }
  }
  
  }  // namespace shill
  