New policies: enable/disable relay; port range

remoting/jingle_glue/network_settings.cc

+// Copyright 2014 The Chromium 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 "remoting/jingle_glue/network_settings.h"
+
+#include <limits.h>
+#include <stdlib.h>
+
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+
+namespace remoting {
+
+// static
+  bool NetworkSettings::ParsePortRange(const std::string& port_range,
+                                       int* out_min_port,
+                                       int* out_max_port) {
+  size_t separator_index = port_range.find('-');
+  if (separator_index == std::string::npos)
+    return false;
+
+  std::string min_port_string, max_port_string;
+  base::TrimWhitespaceASCII(port_range.substr(0, separator_index),
+                            base::TRIM_ALL,
+                            &min_port_string);
+  base::TrimWhitespaceASCII(port_range.substr(separator_index + 1),
+                            base::TRIM_ALL,
+                            &max_port_string);
+
+  unsigned min_port, max_port;
+  if (!base::StringToUint(min_port_string, &min_port) ||
+      !base::StringToUint(max_port_string, &max_port)) {
+    return false;
+  }
+
+  if (min_port == 0 || min_port > max_port || max_port > USHRT_MAX)
+    return false;
+
+  *out_min_port = static_cast<int>(min_port);
+  *out_max_port = static_cast<int>(max_port);
+  return true;
+}
+
+}  // namespace remoting