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116 lines
3.0 KiB
Python
116 lines
3.0 KiB
Python
# Copyright 2016 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 os
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import shutil
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import tempfile
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from xml.etree import ElementTree
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from devil.utils import cmd_helper
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from pylib import constants
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DEXDUMP_PATH = os.path.join(constants.ANDROID_SDK_TOOLS, 'dexdump')
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def Dump(apk_path):
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"""Dumps class and method information from a APK into a dict via dexdump.
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Args:
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apk_path: An absolute path to an APK file to dump.
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Returns:
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A dict in the following format:
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{
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<package_name>: {
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'classes': {
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<class_name>: {
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'methods': [<method_1>, <method_2>]
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}
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}
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}
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}
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"""
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# TODO(mikecase): Support multi-dex
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try:
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dexfile_dir = tempfile.mkdtemp()
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# Python zipfile module is unable to unzip APKs.
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cmd_helper.RunCmd(['unzip', apk_path, 'classes.dex'], cwd=dexfile_dir)
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dexfile = os.path.join(dexfile_dir, 'classes.dex')
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output_xml = cmd_helper.GetCmdOutput([DEXDUMP_PATH, '-l', 'xml', dexfile])
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return _ParseRootNode(ElementTree.fromstring(output_xml))
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finally:
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shutil.rmtree(dexfile_dir)
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def _ParseRootNode(root):
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"""Parses the XML output of dexdump. This output is in the following format.
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This is a subset of the information contained within dexdump output.
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<api>
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<package name="foo.bar">
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<class name="Class" extends="foo.bar.SuperClass">
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<field name="Field">
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</field>
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<constructor name="Method">
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<parameter name="Param" type="int">
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</parameter>
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</constructor>
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<method name="Method">
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<parameter name="Param" type="int">
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</parameter>
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</method>
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</class>
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</package>
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</api>
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"""
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results = {}
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for child in root:
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if child.tag == 'package':
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package_name = child.attrib['name']
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parsed_node = _ParsePackageNode(child)
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if package_name in results:
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results[package_name]['classes'].update(parsed_node['classes'])
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else:
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results[package_name] = parsed_node
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return results
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def _ParsePackageNode(package_node):
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"""Parses a <package> node from the dexdump xml output.
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Returns:
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A dict in the format:
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{
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'classes': {
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<class_1>: {
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'methods': [<method_1>, <method_2>]
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},
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<class_2>: {
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'methods': [<method_1>, <method_2>]
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},
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}
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}
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"""
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classes = {}
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for child in package_node:
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if child.tag == 'class':
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classes[child.attrib['name']] = _ParseClassNode(child)
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return {'classes': classes}
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def _ParseClassNode(class_node):
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"""Parses a <class> node from the dexdump xml output.
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Returns:
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A dict in the format:
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{
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'methods': [<method_1>, <method_2>]
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}
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"""
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methods = []
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for child in class_node:
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if child.tag == 'method':
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methods.append(child.attrib['name'])
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return {'methods': methods, 'superclass': class_node.attrib['extends']}
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