debugd/src/ping_tool.cc

// Copyright (c) 2012 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 "debugd/src/ping_tool.h"

#include <map>
#include <string>

#include "debugd/src/process_with_id.h"

namespace debugd {

const char* kSetuidHack = "/usr/libexec/debugd/helpers/minijail-setuid-hack.sh";
const char* kPing = "/bin/ping";
const char* kPing6 = "/bin/ping6";

std::string PingTool::Start(const DBus::FileDescriptor& outfd,
                            const std::string& destination,
                            const std::map<std::string, DBus::Variant>& options,
                            DBus::Error* error) {
  ProcessWithId* p = CreateProcess(true);
  if (!p)
    return "";
  p->AddArg(kSetuidHack);

  auto option_iter = options.find("v6");
  if (option_iter != options.end() && option_iter->second.reader().get_bool())
    p->AddArg(kPing6);
  else
    p->AddArg(kPing);

  if (options.count("broadcast") == 1) {
    p->AddArg("-b");
  }
  if (options.count("count") == 1) {
    // If we try to convert a non-int value to an int here, dbus-c++ will toss
    // a C++ exception, which the dbus-c++ main loop will convert into a dbus
    // exception and return it to our caller.
    p->AddIntOption("-c", options.find("count")->second);
  }
  if (options.count("interval") == 1) {
    p->AddIntOption("-i", options.find("interval")->second);
  }
  if (options.count("numeric") == 1) {
    p->AddArg("-n");
  }
  if (options.count("packetsize") == 1) {
    p->AddIntOption("-s", options.find("packetsize")->second);
  }
  if (options.count("waittime") == 1) {
    p->AddIntOption("-W", options.find("waittime")->second);
  }
  p->AddArg(destination);
  p->BindFd(outfd.get(), STDOUT_FILENO);
  p->BindFd(outfd.get(), STDERR_FILENO);
  LOG(INFO) << "ping: running process id: " << p->id();
  p->Start();
  return p->id();
}

}  // namespace debugd