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| 1 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 # Use of this source code is governed by a BSD-style license that can be |
| 3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
| 4 | 4 |
| 5 import android_commands | 5 import android_commands |
| 6 import constants | 6 import constants |
| 7 import logging | 7 import logging |
| 8 import os | 8 import os |
| 9 import subprocess | 9 import subprocess |
| 10 import time | 10 import time |
| 11 | 11 |
| 12 | 12 |
| 13 class FakeDns(object): | 13 class FakeDns(object): |
| 14 """Wrapper class for the fake_dns tool.""" | 14 """Wrapper class for the fake_dns tool.""" |
| 15 _FAKE_DNS_PATH = '/data/local/tmp/fake_dns' | 15 _FAKE_DNS_PATH = '/data/local/tmp/fake_dns' |
| 16 | 16 |
| 17 def __init__(self, adb): | 17 def __init__(self, adb, build_type): |
| 18 """ | 18 """ |
| 19 Args: | 19 Args: |
| 20 adb: the AndroidCommands to use. | 20 adb: the AndroidCommands to use. |
| 21 build_type: 'Release' or 'Debug'. |
| 21 """ | 22 """ |
| 22 self._adb = adb | 23 self._adb = adb |
| 24 self._build_type = build_type |
| 23 self._fake_dns = None | 25 self._fake_dns = None |
| 24 self._original_dns = None | 26 self._original_dns = None |
| 25 | 27 |
| 26 def _PushAndStartFakeDns(self): | 28 def _PushAndStartFakeDns(self): |
| 27 """Starts the fake_dns server that replies all name queries 127.0.0.1. | 29 """Starts the fake_dns server that replies all name queries 127.0.0.1. |
| 28 | 30 |
| 29 Returns: | 31 Returns: |
| 30 subprocess instance connected to the fake_dns process on the device. | 32 subprocess instance connected to the fake_dns process on the device. |
| 31 """ | 33 """ |
| 32 self._adb.PushIfNeeded( | 34 self._adb.PushIfNeeded( |
| 33 os.path.join(constants.CHROME_DIR, 'out', 'Release', 'fake_dns'), | 35 os.path.join(constants.CHROME_DIR, 'out', self._build_type, 'fake_dns'), |
| 34 FakeDns._FAKE_DNS_PATH) | 36 FakeDns._FAKE_DNS_PATH) |
| 35 return subprocess.Popen( | 37 return subprocess.Popen( |
| 36 ['adb', '-s', self._adb._adb.GetSerialNumber(), | 38 ['adb', '-s', self._adb._adb.GetSerialNumber(), |
| 37 'shell', '%s -D' % FakeDns._FAKE_DNS_PATH]) | 39 'shell', '%s -D' % FakeDns._FAKE_DNS_PATH]) |
| 38 | 40 |
| 39 def SetUp(self): | 41 def SetUp(self): |
| 40 """Configures the system to point to a DNS server that replies 127.0.0.1. | 42 """Configures the system to point to a DNS server that replies 127.0.0.1. |
| 41 | 43 |
| 42 This can be used in combination with the forwarder to forward all web | 44 This can be used in combination with the forwarder to forward all web |
| 43 traffic to a replay server. | 45 traffic to a replay server. |
| 44 | 46 |
| 45 The TearDown() method will perform all cleanup. | 47 The TearDown() method will perform all cleanup. |
| 46 """ | 48 """ |
| 47 self._adb.RunShellCommand('ip route add 8.8.8.0/24 via 127.0.0.1 dev lo') | 49 self._adb.RunShellCommand('ip route add 8.8.8.0/24 via 127.0.0.1 dev lo') |
| 48 self._fake_dns = self._PushAndStartFakeDns() | 50 self._fake_dns = self._PushAndStartFakeDns() |
| 49 self._original_dns = self._adb.RunShellCommand('getprop net.dns1')[0] | 51 self._original_dns = self._adb.RunShellCommand('getprop net.dns1')[0] |
| 50 self._adb.RunShellCommand('setprop net.dns1 127.0.0.1') | 52 self._adb.RunShellCommand('setprop net.dns1 127.0.0.1') |
| 51 time.sleep(2) # Time for server to start and the setprop to take effect. | 53 time.sleep(2) # Time for server to start and the setprop to take effect. |
| 52 | 54 |
| 53 def TearDown(self): | 55 def TearDown(self): |
| 54 """Shuts down the fake_dns.""" | 56 """Shuts down the fake_dns.""" |
| 55 if self._fake_dns: | 57 if self._fake_dns: |
| 56 if not self._original_dns or self._original_dns == '127.0.0.1': | 58 if not self._original_dns or self._original_dns == '127.0.0.1': |
| 57 logging.warning('Bad original DNS, falling back to Google DNS.') | 59 logging.warning('Bad original DNS, falling back to Google DNS.') |
| 58 self._original_dns = '8.8.8.8' | 60 self._original_dns = '8.8.8.8' |
| 59 self._adb.RunShellCommand('setprop net.dns1 %s' % self._original_dns) | 61 self._adb.RunShellCommand('setprop net.dns1 %s' % self._original_dns) |
| 60 self._fake_dns.kill() | 62 self._fake_dns.kill() |
| 61 self._adb.RunShellCommand('ip route del 8.8.8.0/24 via 127.0.0.1 dev lo') | 63 self._adb.RunShellCommand('ip route del 8.8.8.0/24 via 127.0.0.1 dev lo') |
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