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1# Copyright 2016 Google Inc.
2#
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5
6from __future__ import print_function
7from _hardware import Hardware
8import sys
9import time
10
11class HardwareAndroid(Hardware):
12  def __init__(self, adb):
13    Hardware.__init__(self)
14    self.warmup_time = 5
15    self._adb = adb
16
17    if self._adb.root():
18      self._adb.remount()
19
20  def __enter__(self):
21    Hardware.__enter__(self)
22    if not self._adb.is_root() and self._adb.root():
23      self._adb.remount()
24
25    self._adb.shell('\n'.join([
26      # turn on airplane mode.
27      '''
28      settings put global airplane_mode_on 1''',
29
30      # disable GPS.
31      '''
32      for MODE in gps wifi network; do
33        settings put secure location_providers_allowed -$MODE
34      done''']))
35
36    if self._adb.is_root():
37      self._adb.shell('\n'.join([
38        # disable bluetooth, wifi, and mobile data.
39        '''
40        service call bluetooth_manager 8
41        svc wifi disable
42        svc data disable''',
43
44        # kill the gui.
45        '''
46        setprop ctl.stop media
47        setprop ctl.stop zygote
48        setprop ctl.stop surfaceflinger
49        setprop ctl.stop drm''',
50
51        # disable ASLR
52        '''
53        echo 0 > /proc/sys/kernel/randomize_va_space''']))
54    else:
55      print("WARNING: no adb root access; results may be unreliable.",
56            file=sys.stderr)
57
58    return self
59
60  def __exit__(self, exception_type, exception_value, traceback):
61    Hardware.__exit__(self, exception_type, exception_value, traceback)
62    self._adb.reboot() # some devices struggle waking up; just hard reboot.
63
64  def sanity_check(self):
65    Hardware.sanity_check(self)
66
67  def print_debug_diagnostics(self):
68    # search for and print thermal trip points that may have been exceeded.
69    self._adb.shell('''\
70      THERMALDIR=/sys/class/thermal
71      if [ ! -d $THERMALDIR ]; then
72        exit
73      fi
74      for ZONE in $(cd $THERMALDIR; echo thermal_zone*); do
75        cd $THERMALDIR/$ZONE
76        if [ ! -e mode ] || grep -Fxqv enabled mode || [ ! -e trip_point_0_temp ]; then
77          continue
78        fi
79        TEMP=$(cat temp)
80        TRIPPOINT=trip_point_0_temp
81        if [ $TEMP -le $(cat $TRIPPOINT) ]; then
82          echo "$ZONE ($(cat type)): temp=$TEMP <= $TRIPPOINT=$(cat $TRIPPOINT)" 1>&2
83        else
84          let i=1
85          while [ -e trip_point_${i}_temp ] &&
86                [ $TEMP -gt $(cat trip_point_${i}_temp) ]; do
87            TRIPPOINT=trip_point_${i}_temp
88            let i=i+1
89          done
90          echo "$ZONE ($(cat type)): temp=$TEMP > $TRIPPOINT=$(cat $TRIPPOINT)" 1>&2
91        fi
92      done''')
93
94    Hardware.print_debug_diagnostics(self)
95