The Tor Browser / file comparison
comparison: media/webrtc/trunk/build/android/pylib/fake_dns.py
media/webrtc/trunk/build/android/pylib/fake_dns.py
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
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| -1:000000000000 | 0:c8338185012b |
|---|---|
| 1 # Copyright (c) 2012 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 import android_commands | |
| 6 import constants | |
| 7 import logging | |
| 8 import os | |
| 9 import subprocess | |
| 10 import time | |
| 11 | |
| 12 | |
| 13 class FakeDns(object): | |
| 14 """Wrapper class for the fake_dns tool.""" | |
| 15 _FAKE_DNS_PATH = constants.TEST_EXECUTABLE_DIR + '/fake_dns' | |
| 16 | |
| 17 def __init__(self, adb, build_type): | |
| 18 """ | |
| 19 Args: | |
| 20 adb: the AndroidCommands to use. | |
| 21 build_type: 'Release' or 'Debug'. | |
| 22 """ | |
| 23 self._adb = adb | |
| 24 self._build_type = build_type | |
| 25 self._fake_dns = None | |
| 26 self._original_dns = None | |
| 27 | |
| 28 def _PushAndStartFakeDns(self): | |
| 29 """Starts the fake_dns server that replies all name queries 127.0.0.1. | |
| 30 | |
| 31 Returns: | |
| 32 subprocess instance connected to the fake_dns process on the device. | |
| 33 """ | |
| 34 self._adb.PushIfNeeded( | |
| 35 os.path.join(constants.CHROME_DIR, 'out', self._build_type, 'fake_dns'), | |
| 36 FakeDns._FAKE_DNS_PATH) | |
| 37 return subprocess.Popen( | |
| 38 ['adb', '-s', self._adb._adb.GetSerialNumber(), | |
| 39 'shell', '%s -D' % FakeDns._FAKE_DNS_PATH]) | |
| 40 | |
| 41 def SetUp(self): | |
| 42 """Configures the system to point to a DNS server that replies 127.0.0.1. | |
| 43 | |
| 44 This can be used in combination with the forwarder to forward all web | |
| 45 traffic to a replay server. | |
| 46 | |
| 47 The TearDown() method will perform all cleanup. | |
| 48 """ | |
| 49 self._adb.RunShellCommand('ip route add 8.8.8.0/24 via 127.0.0.1 dev lo') | |
| 50 self._fake_dns = self._PushAndStartFakeDns() | |
| 51 self._original_dns = self._adb.RunShellCommand('getprop net.dns1')[0] | |
| 52 self._adb.RunShellCommand('setprop net.dns1 127.0.0.1') | |
| 53 time.sleep(2) # Time for server to start and the setprop to take effect. | |
| 54 | |
| 55 def TearDown(self): | |
| 56 """Shuts down the fake_dns.""" | |
| 57 if self._fake_dns: | |
| 58 if not self._original_dns or self._original_dns == '127.0.0.1': | |
| 59 logging.warning('Bad original DNS, falling back to Google DNS.') | |
| 60 self._original_dns = '8.8.8.8' | |
| 61 self._adb.RunShellCommand('setprop net.dns1 %s' % self._original_dns) | |
| 62 self._fake_dns.kill() | |
| 63 self._adb.RunShellCommand('ip route del 8.8.8.0/24 via 127.0.0.1 dev lo') |
