remoting/protocol/network_settings.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "remoting/protocol/network_settings.h"
   6
   7 #include <limits.h>
   8 #include <stdlib.h>
   9
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/strings/string_util.h"
  12
  13 namespace remoting {
  14 namespace protocol {
  15
  16 // static
  17   bool NetworkSettings::ParsePortRange(const std::string& port_range,
  18                                        uint16* out_min_port,
  19                                        uint16* out_max_port) {
  20   size_t separator_index = port_range.find('-');
  21   if (separator_index == std::string::npos)
  22     return false;
  23
  24   std::string min_port_string, max_port_string;
  25   base::TrimWhitespaceASCII(port_range.substr(0, separator_index),
  26                             base::TRIM_ALL,
  27                             &min_port_string);
  28   base::TrimWhitespaceASCII(port_range.substr(separator_index + 1),
  29                             base::TRIM_ALL,
  30                             &max_port_string);
  31
  32   unsigned min_port, max_port;
  33   if (!base::StringToUint(min_port_string, &min_port) ||
  34       !base::StringToUint(max_port_string, &max_port)) {
  35     return false;
  36   }
  37
  38   if (min_port == 0 || min_port > max_port || max_port > USHRT_MAX)
  39     return false;
  40
  41   *out_min_port = static_cast<uint16>(min_port);
  42   *out_max_port = static_cast<uint16>(max_port);
  43   return true;
  44 }
  45
  46 }  // namespace protocol
  47 }  // namespace remoting