mirror of
https://github.com/klzgrad/naiveproxy.git
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114 lines
3.6 KiB
Python
114 lines
3.6 KiB
Python
# Copyright 2017 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import logging
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import os
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import re
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import shutil
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import tempfile
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import time
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import zipfile
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from devil.utils import cmd_helper
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from pylib import constants
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_STACK_TOOL = os.path.join(os.path.dirname(__file__), '..', '..', '..', '..',
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'third_party', 'android_platform', 'development',
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'scripts', 'stack')
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ABI_REG = re.compile('ABI: \'(.+?)\'')
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def _DeviceAbiToArch(device_abi):
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# The order of this list is significant to find the more specific match
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# (e.g., arm64) before the less specific (e.g., arm).
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arches = ['arm64', 'arm', 'x86_64', 'x86_64', 'x86', 'mips']
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for arch in arches:
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if arch in device_abi:
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return arch
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raise RuntimeError('Unknown device ABI: %s' % device_abi)
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class Symbolizer(object):
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"""A helper class to symbolize stack."""
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def __init__(self, apk_under_test=None,
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non_native_packed_relocations=None):
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self._apk_under_test = apk_under_test
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self._non_native_packed_relocations = non_native_packed_relocations
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self._libs_dir = None
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self._apk_libs = []
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self._has_unzipped = False
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self._time_spent_symbolizing = 0
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def __del__(self):
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if self._libs_dir:
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logging.warning('Please call stack_symbolizer\'s'
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' CleanUp method before it goes out of scope.')
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self.CleanUp()
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def CleanUp(self):
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"""Clean up the temporary directory of apk libs."""
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if self._libs_dir:
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shutil.rmtree(self._libs_dir)
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self._libs_dir = None
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if self._time_spent_symbolizing > 0:
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logging.info(
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'Total time spent symbolizing: %.2fs', self._time_spent_symbolizing)
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def UnzipAPKIfNecessary(self):
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"""Unzip apk if packed relocation is enabled."""
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if (self._has_unzipped
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or not self._non_native_packed_relocations
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or not self._apk_under_test):
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return
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self._libs_dir = tempfile.mkdtemp()
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with zipfile.ZipFile(self._apk_under_test) as z:
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for name in z.namelist():
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if name.endswith('.so'):
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self._apk_libs.append(z.extract(name, self._libs_dir))
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self._has_unzipped = True
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def ExtractAndResolveNativeStackTraces(self, data_to_symbolize,
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device_abi, include_stack=True):
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"""Run the stack tool for given input.
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Args:
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data_to_symbolize: a list of strings to symbolize.
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include_stack: boolean whether to include stack data in output.
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device_abi: the default ABI of the device which generated the tombstone.
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Yields:
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A string for each line of resolved stack output.
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"""
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self.UnzipAPKIfNecessary()
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arch = _DeviceAbiToArch(device_abi)
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if not arch:
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logging.warning('No device_abi can be found.')
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return
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cmd = [_STACK_TOOL, '--arch', arch, '--output-directory',
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constants.GetOutDirectory(), '--more-info']
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if self._non_native_packed_relocations and self._apk_libs:
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for apk_lib in self._apk_libs:
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cmd.extend(['--packed-lib', apk_lib])
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env = dict(os.environ)
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env['PYTHONDONTWRITEBYTECODE'] = '1'
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with tempfile.NamedTemporaryFile() as f:
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f.write('\n'.join(data_to_symbolize))
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f.flush()
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start = time.time()
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try:
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_, output = cmd_helper.GetCmdStatusAndOutput(cmd + [f.name], env=env)
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finally:
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self._time_spent_symbolizing += time.time() - start
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for line in output.splitlines():
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if not include_stack and 'Stack Data:' in line:
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break
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yield line
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