remoting/protocol/port_range.cc

   1 // Copyright 2015 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/port_range.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
  15 bool PortRange::Parse(const std::string& port_range, PortRange* result) {
  16   DCHECK(result);
  17
  18   if (port_range.empty()) {
  19     result->min_port = 0;
  20     result->max_port = 0;
  21     return true;
  22   }
  23
  24   size_t separator_index = port_range.find('-');
  25   if (separator_index == std::string::npos)
  26     return false;
  27
  28   std::string min_port_string, max_port_string;
  29   base::TrimWhitespaceASCII(port_range.substr(0, separator_index),
  30                             base::TRIM_ALL, &min_port_string);
  31   base::TrimWhitespaceASCII(port_range.substr(separator_index + 1),
  32                             base::TRIM_ALL, &max_port_string);
  33
  34   unsigned min_port, max_port;
  35   if (!base::StringToUint(min_port_string, &min_port) ||
  36       !base::StringToUint(max_port_string, &max_port)) {
  37     return false;
  38   }
  39
  40   if (min_port == 0 || min_port > max_port || max_port > USHRT_MAX)
  41     return false;
  42
  43   result->min_port = static_cast<uint16>(min_port);
  44   result->max_port = static_cast<uint16>(max_port);
  45   return true;
  46 }
  47
  48 std::ostream& operator<<(std::ostream& os, const PortRange& port_range) {
  49   if (port_range.is_null()) {
  50     os << "<no port range specified>";
  51   } else {
  52     os << "[" << port_range.min_port << ", " << port_range.max_port << "]";
  53   }
  54   return os;
  55 }
  56
  57 }  // namespace remoting