Thu, 15 Jan 2015 15:59:08 +0100
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
michael@0 | 4 | |
michael@0 | 5 | 'use strict'; |
michael@0 | 6 | |
michael@0 | 7 | module.metadata = { |
michael@0 | 8 | "stability": "unstable" |
michael@0 | 9 | }; |
michael@0 | 10 | |
michael@0 | 11 | const { Cc, Ci } = require('chrome'); |
michael@0 | 12 | const system = require('../sdk/system'); |
michael@0 | 13 | const runtime = require('../sdk/system/runtime'); |
michael@0 | 14 | const oscpu = Cc["@mozilla.org/network/protocol;1?name=http"] |
michael@0 | 15 | .getService(Ci.nsIHttpProtocolHandler).oscpu; |
michael@0 | 16 | const hostname = Cc["@mozilla.org/network/dns-service;1"] |
michael@0 | 17 | .getService(Ci.nsIDNSService).myHostName; |
michael@0 | 18 | const isWindows = system.platform === 'win32'; |
michael@0 | 19 | const endianness = ((new Uint32Array((new Uint8Array([1,2,3,4])).buffer))[0] === 0x04030201) ? 'LE' : 'BE'; |
michael@0 | 20 | |
michael@0 | 21 | /** |
michael@0 | 22 | * Returns a path to a temp directory |
michael@0 | 23 | */ |
michael@0 | 24 | exports.tmpdir = () => system.pathFor('TmpD'); |
michael@0 | 25 | |
michael@0 | 26 | /** |
michael@0 | 27 | * Returns the endianness of the architecture: either 'LE' or 'BE' |
michael@0 | 28 | */ |
michael@0 | 29 | exports.endianness = () => endianness; |
michael@0 | 30 | |
michael@0 | 31 | /** |
michael@0 | 32 | * Returns hostname of the machine |
michael@0 | 33 | */ |
michael@0 | 34 | exports.hostname = () => hostname; |
michael@0 | 35 | |
michael@0 | 36 | /** |
michael@0 | 37 | * Name of the OS type |
michael@0 | 38 | * Possible values: |
michael@0 | 39 | * https://developer.mozilla.org/en/OS_TARGET |
michael@0 | 40 | */ |
michael@0 | 41 | exports.type = () => runtime.OS; |
michael@0 | 42 | |
michael@0 | 43 | /** |
michael@0 | 44 | * Name of the OS Platform in lower case string. |
michael@0 | 45 | * Possible values: |
michael@0 | 46 | * https://developer.mozilla.org/en/OS_TARGET |
michael@0 | 47 | */ |
michael@0 | 48 | exports.platform = () => system.platform; |
michael@0 | 49 | |
michael@0 | 50 | /** |
michael@0 | 51 | * Type of processor architecture running: |
michael@0 | 52 | * 'arm', 'ia32', 'x86', 'x64' |
michael@0 | 53 | */ |
michael@0 | 54 | exports.arch = () => system.architecture; |
michael@0 | 55 | |
michael@0 | 56 | /** |
michael@0 | 57 | * Returns the operating system release. |
michael@0 | 58 | */ |
michael@0 | 59 | exports.release = () => { |
michael@0 | 60 | let match = oscpu.match(/(\d[\.\d]*)/); |
michael@0 | 61 | return match && match.length > 1 ? match[1] : oscpu; |
michael@0 | 62 | }; |
michael@0 | 63 | |
michael@0 | 64 | /** |
michael@0 | 65 | * Returns EOL character for the OS |
michael@0 | 66 | */ |
michael@0 | 67 | exports.EOL = isWindows ? '\r\n' : '\n'; |
michael@0 | 68 | |
michael@0 | 69 | /** |
michael@0 | 70 | * Returns [0, 0, 0], as this is not implemented. |
michael@0 | 71 | */ |
michael@0 | 72 | exports.loadavg = () => [0, 0, 0]; |
michael@0 | 73 | |
michael@0 | 74 | ['uptime', 'totalmem', 'freemem', 'cpus'].forEach(method => { |
michael@0 | 75 | exports[method] = () => { throw new Error('os.' + method + ' is not supported.'); }; |
michael@0 | 76 | }); |