netwerk/system/LinkServiceCommon.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "LinkServiceCommon.h"
   8
   9 #include "mozilla/Maybe.h"
  10 #include "mozilla/SHA1.h"
  11 #include "mozilla/TimeStamp.h"
  12 #include "nsID.h"
  13
  14 using namespace mozilla;
  15
  16 void SeedNetworkId(SHA1Sum& aSha1) {
  17   static Maybe<nsID> seed = ([]() {
  18     Maybe<nsID> uuid(std::in_place);
  19     if (NS_FAILED(nsID::GenerateUUIDInPlace(*uuid))) {
  20       uuid.reset();
  21     }
  22     return uuid;
  23   })();
  24   if (seed) {
  25     aSha1.update(seed.ptr(), sizeof(*seed));
  26   } else {
  27     TimeStamp timestamp = TimeStamp::ProcessCreation();
  28     aSha1.update(&timestamp, sizeof(timestamp));
  29   }
  30 }