The Tor Browser: xpcom/ds/TimeStamp.cpp@129ffea94266

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim:set ts=2 sw=2 sts=2 et cindent: */

     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/. */

     7 /*

     8  * Implementation of the OS-independent methods of the TimeStamp class

     9  */

    11 #include "mozilla/TimeStamp.h"

    12 #include "prenv.h"

    14 namespace mozilla {

    16 /**

    17  * Wrapper class used to initialize static data used by the TimeStamp class

    18  */

    19 struct TimeStampInitialization {

    20   /**

    21    * First timestamp taken when the class static initializers are run. This

    22    * timestamp is used to sanitize timestamps coming from different sources.

    23    */

    24   TimeStamp mFirstTimeStamp;

    26   /**

    27    * Timestamp representing the time when the process was created. This field

    28    * is populated lazily the first time this information is required and is

    29    * replaced every time the process is restarted.

    30    */

    31   TimeStamp mProcessCreation;

    33   TimeStampInitialization() {

    34     TimeStamp::Startup();

    35     mFirstTimeStamp = TimeStamp::Now();

    36   };

    38   ~TimeStampInitialization() {

    39     TimeStamp::Shutdown();

    40   };

    41 };

    43 static TimeStampInitialization sInitOnce;

    45 TimeStamp

    46 TimeStamp::ProcessCreation(bool& aIsInconsistent)

    47 {

    48   aIsInconsistent = false;

    50   if (sInitOnce.mProcessCreation.IsNull()) {

    51     char *mozAppRestart = PR_GetEnv("MOZ_APP_RESTART");

    52     TimeStamp ts;

    54     /* When calling PR_SetEnv() with an empty value the existing variable may

    55      * be unset or set to the empty string depending on the underlying platform

    56      * thus we have to check if the variable is present and not empty. */

    57     if (mozAppRestart && (strcmp(mozAppRestart, "") != 0)) {

    58       /* Firefox was restarted, use the first time-stamp we've taken as the new

    59        * process startup time. */

    60       ts = sInitOnce.mFirstTimeStamp;

    61     } else {

    62       TimeStamp now = Now();

    63       uint64_t uptime = ComputeProcessUptime();

    65       ts = now - TimeDuration::FromMicroseconds(uptime);

    67       if ((ts > sInitOnce.mFirstTimeStamp) || (uptime == 0)) {

    68         /* If the process creation timestamp was inconsistent replace it with

    69          * the first one instead and notify that a telemetry error was

    70          * detected. */

    71         aIsInconsistent = true;

    72         ts = sInitOnce.mFirstTimeStamp;

    73       }

    74     }

    76     sInitOnce.mProcessCreation = ts;

    77   }

    79   return sInitOnce.mProcessCreation;

    80 }

    82 void

    83 TimeStamp::RecordProcessRestart()

    84 {

    85   sInitOnce.mProcessCreation = TimeStamp();

    86 }

    88 } // namespace mozilla

The Tor Browser / file revision

xpcom/ds/TimeStamp.cpp@129ffea94266

xpcom/ds/TimeStamp.cpp