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# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from __future__ import print_function
from _hardware import Hardware
import sys
import time
class HardwareAndroid(Hardware):
def __init__(self, adb):
Hardware.__init__(self)
self.kick_in_time = 5
self._adb = adb
self._is_root = self._adb.attempt_root()
if self._is_root:
self._adb.remount()
self._initial_airplane_mode = None
self._initial_location_providers = None
self._initial_ASLR = None
def __enter__(self):
# turn on airplane mode.
self._initial_airplane_mode = \
self._adb.check('settings get global airplane_mode_on')
self._adb.shell('settings put global airplane_mode_on 1')
# disable GPS.
self._initial_location_providers = \
self._adb.check('settings get secure location_providers_allowed')
self._initial_location_providers = \
self._initial_location_providers.replace(',', ' ')
self._adb.shell('''\
for PROVIDER in %s; do
settings put secure location_providers_allowed -$PROVIDER
done''' % self._initial_location_providers)
if self._is_root:
# disable bluetooth, wifi, and mobile data.
# TODO: can we query these initial values?
self._adb.shell('''\
service call bluetooth_manager 8 &&
svc wifi disable &&
svc data disable''')
# kill the gui.
self._adb.shell('''\
setprop ctl.stop media &&
setprop ctl.stop zygote &&
setprop ctl.stop surfaceflinger &&
setprop ctl.stop drm''')
# disable ASLR.
self._initial_ASLR = \
self._adb.check('cat /proc/sys/kernel/randomize_va_space')
self._adb.shell('echo 0 > /proc/sys/kernel/randomize_va_space')
else:
print("WARNING: no adb root access; results may be unreliable.",
file=sys.stderr)
return Hardware.__enter__(self)
def __exit__(self, exception_type, exception_value, traceback):
Hardware.__exit__(self, exception_type, exception_value, traceback)
if self._is_root:
# restore ASLR.
self._adb.shell('echo %s > /proc/sys/kernel/randomize_va_space' %
self._initial_ASLR)
# revive the gui.
self._adb.shell('''\
setprop ctl.start drm &&
setprop ctl.start surfaceflinger &&
setprop ctl.start zygote &&
setprop ctl.start media''')
# restore GPS (doesn't seem to work if we killed the gui).
self._adb.shell('''\
for PROVIDER in %s; do
settings put secure location_providers_allowed +$PROVIDER
done''' % self._initial_location_providers)
# restore airplane mode (doesn't seem to work if we killed the gui).
self._adb.shell('settings put global airplane_mode_on %s' %
self._initial_airplane_mode)
def sanity_check(self):
Hardware.sanity_check(self)
def print_debug_diagnostics(self):
# search for and print thermal trip points that may have been exceeded.
self._adb.shell('''\
THERMALDIR=/sys/class/thermal
if [ -e $THERMALDIR ]; then
for ZONE in $(cd $THERMALDIR; echo thermal_zone*); do
cd $THERMALDIR/$ZONE
if [ -e mode ] && grep -Fxq enabled mode; then
TEMP=$(cat temp)
TRIPPOINT=
let i=0
while [ -e trip_point_${i}_temp ] &&
[ $TEMP -gt $(cat trip_point_${i}_temp) ]; do
TRIPPOINT=trip_point_${i}_temp
let i=i+1
done
if [ $TRIPPOINT ]; then
echo "$ZONE ($(cat type)): temp=$TEMP > $TRIPPOINT=$(cat $TRIPPOINT)"
fi
fi
done
fi''')
Hardware.print_debug_diagnostics(self)
def sleep(self, sleeptime):
Hardware.sleep(self, sleeptime)
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