mirror of
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289 lines
8.9 KiB
Python
289 lines
8.9 KiB
Python
# Copyright 2014 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 re
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import tempfile
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from devil.utils import cmd_helper
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from pylib import constants
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_PROGUARD_CLASS_RE = re.compile(r'\s*?- Program class:\s*([\S]+)$')
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_PROGUARD_SUPERCLASS_RE = re.compile(r'\s*? Superclass:\s*([\S]+)$')
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_PROGUARD_SECTION_RE = re.compile(
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r'^(Interfaces|Constant Pool|Fields|Methods|Class file attributes) '
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r'\(count = \d+\):$')
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_PROGUARD_METHOD_RE = re.compile(r'\s*?- Method:\s*(\S*)[(].*$')
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_PROGUARD_ANNOTATION_RE = re.compile(r'^(\s*?)- Annotation \[L(\S*);\]:$')
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_ELEMENT_PRIMITIVE = 0
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_ELEMENT_ARRAY = 1
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_ELEMENT_ANNOTATION = 2
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_PROGUARD_ELEMENT_RES = [
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(_ELEMENT_PRIMITIVE,
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re.compile(r'^(\s*?)- Constant element value \[(\S*) .*\]$')),
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(_ELEMENT_ARRAY,
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re.compile(r'^(\s*?)- Array element value \[(\S*)\]:$')),
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(_ELEMENT_ANNOTATION,
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re.compile(r'^(\s*?)- Annotation element value \[(\S*)\]:$'))
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]
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_PROGUARD_INDENT_WIDTH = 2
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_PROGUARD_ANNOTATION_VALUE_RE = re.compile(r'^(\s*?)- \S+? \[(.*)\]$')
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def _GetProguardPath():
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# Use the one in lib.java rather than source tree because it is the one that
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# is added to swarming .isolate files.
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return os.path.join(
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constants.GetOutDirectory(), 'lib.java', 'third_party', 'proguard',
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'proguard603.jar')
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def Dump(jar_path):
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"""Dumps class and method information from a JAR into a dict via proguard.
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Args:
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jar_path: An absolute path to the JAR 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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'classes': [
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{
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'class': '',
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'superclass': '',
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'annotations': {/* dict -- see below */},
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'methods': [
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{
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'method': '',
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'annotations': {/* dict -- see below */},
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},
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...
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],
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},
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...
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],
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}
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Annotations dict format:
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{
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'empty-annotation-class-name': None,
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'annotation-class-name': {
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'field': 'primitive-value',
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'field': [ 'array-item-1', 'array-item-2', ... ],
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'field': {
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/* Object value */
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'field': 'primitive-value',
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'field': [ 'array-item-1', 'array-item-2', ... ],
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'field': { /* Object value */ }
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}
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}
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}
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Note that for top-level annotations their class names are used for
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identification, whereas for any nested annotations the corresponding
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field names are used.
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One drawback of this approach is that an array containing empty
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annotation classes will be represented as an array of 'None' values,
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thus it will not be possible to find out annotation class names.
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On the other hand, storing both annotation class name and the field name
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would produce a very complex JSON.
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"""
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with tempfile.NamedTemporaryFile() as proguard_output:
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cmd_helper.GetCmdStatusAndOutput([
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'java',
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'-jar', _GetProguardPath(),
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'-injars', jar_path,
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'-dontshrink', '-dontoptimize', '-dontobfuscate', '-dontpreverify',
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'-dump', proguard_output.name])
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return Parse(proguard_output)
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class _AnnotationElement(object):
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def __init__(self, name, ftype, depth):
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self.ref = None
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self.name = name
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self.ftype = ftype
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self.depth = depth
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class _ParseState(object):
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_INITIAL_VALUES = (lambda: None, list, dict)
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# Empty annotations are represented as 'None', not as an empty dictionary.
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_LAZY_INITIAL_VALUES = (lambda: None, list, lambda: None)
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def __init__(self):
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self._class_result = None
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self._method_result = None
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self._parse_annotations = False
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self._annotation_stack = []
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def ResetPerSection(self, section_name):
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self.InitMethod(None)
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self._parse_annotations = (
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section_name in ['Class file attributes', 'Methods'])
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def ParseAnnotations(self):
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return self._parse_annotations
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def CreateAndInitClass(self, class_name):
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self.InitMethod(None)
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self._class_result = {
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'class': class_name,
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'superclass': '',
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'annotations': {},
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'methods': [],
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}
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return self._class_result
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def HasCurrentClass(self):
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return bool(self._class_result)
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def SetSuperClass(self, superclass):
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assert self.HasCurrentClass()
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self._class_result['superclass'] = superclass
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def InitMethod(self, method_name):
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self._annotation_stack = []
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if method_name:
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self._method_result = {
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'method': method_name,
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'annotations': {},
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}
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self._class_result['methods'].append(self._method_result)
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else:
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self._method_result = None
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def InitAnnotation(self, annotation, depth):
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if not self._annotation_stack:
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# Add a fake parent element comprising 'annotations' dictionary,
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# so we can work uniformly with both top-level and nested annotations.
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annotations = _AnnotationElement(
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'<<<top level>>>', _ELEMENT_ANNOTATION, depth - 1)
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if self._method_result:
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annotations.ref = self._method_result['annotations']
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else:
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annotations.ref = self._class_result['annotations']
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self._annotation_stack = [annotations]
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self._BacktrackAnnotationStack(depth)
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if not self.HasCurrentAnnotation():
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self._annotation_stack.append(
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_AnnotationElement(annotation, _ELEMENT_ANNOTATION, depth))
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self._CreateAnnotationPlaceHolder(self._LAZY_INITIAL_VALUES)
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def HasCurrentAnnotation(self):
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return len(self._annotation_stack) > 1
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def InitAnnotationField(self, field, field_type, depth):
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self._BacktrackAnnotationStack(depth)
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# Create the parent representation, if needed. E.g. annotations
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# are represented with `None`, not with `{}` until they receive the first
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# field.
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self._CreateAnnotationPlaceHolder(self._INITIAL_VALUES)
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if self._annotation_stack[-1].ftype == _ELEMENT_ARRAY:
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# Nested arrays are not allowed in annotations.
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assert not field_type == _ELEMENT_ARRAY
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# Use array index instead of bogus field name.
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field = len(self._annotation_stack[-1].ref)
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self._annotation_stack.append(_AnnotationElement(field, field_type, depth))
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self._CreateAnnotationPlaceHolder(self._LAZY_INITIAL_VALUES)
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def UpdateCurrentAnnotationFieldValue(self, value, depth):
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self._BacktrackAnnotationStack(depth)
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self._InitOrUpdateCurrentField(value)
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def _CreateAnnotationPlaceHolder(self, constructors):
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assert self.HasCurrentAnnotation()
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field = self._annotation_stack[-1]
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if field.ref is None:
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field.ref = constructors[field.ftype]()
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self._InitOrUpdateCurrentField(field.ref)
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def _BacktrackAnnotationStack(self, depth):
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stack = self._annotation_stack
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while len(stack) > 0 and stack[-1].depth >= depth:
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stack.pop()
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def _InitOrUpdateCurrentField(self, value):
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assert self.HasCurrentAnnotation()
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parent = self._annotation_stack[-2]
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assert not parent.ref is None
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# There can be no nested constant element values.
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assert parent.ftype in [_ELEMENT_ARRAY, _ELEMENT_ANNOTATION]
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field = self._annotation_stack[-1]
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if isinstance(value, str) and not field.ftype == _ELEMENT_PRIMITIVE:
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# The value comes from the output parser via
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# UpdateCurrentAnnotationFieldValue, and should be a value of a constant
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# element. If it isn't, just skip it.
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return
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if parent.ftype == _ELEMENT_ARRAY and field.name >= len(parent.ref):
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parent.ref.append(value)
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else:
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parent.ref[field.name] = value
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def _GetDepth(prefix):
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return len(prefix) // _PROGUARD_INDENT_WIDTH
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def Parse(proguard_output):
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results = {
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'classes': [],
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}
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state = _ParseState()
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for line in proguard_output:
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line = line.strip('\r\n')
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m = _PROGUARD_CLASS_RE.match(line)
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if m:
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results['classes'].append(
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state.CreateAndInitClass(m.group(1).replace('/', '.')))
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continue
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if not state.HasCurrentClass():
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continue
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m = _PROGUARD_SUPERCLASS_RE.match(line)
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if m:
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state.SetSuperClass(m.group(1).replace('/', '.'))
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continue
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m = _PROGUARD_SECTION_RE.match(line)
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if m:
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state.ResetPerSection(m.group(1))
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continue
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m = _PROGUARD_METHOD_RE.match(line)
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if m:
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state.InitMethod(m.group(1))
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continue
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if not state.ParseAnnotations():
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continue
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m = _PROGUARD_ANNOTATION_RE.match(line)
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if m:
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# Ignore the annotation package.
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state.InitAnnotation(m.group(2).split('/')[-1], _GetDepth(m.group(1)))
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continue
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if state.HasCurrentAnnotation():
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m = None
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for (element_type, element_re) in _PROGUARD_ELEMENT_RES:
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m = element_re.match(line)
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if m:
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state.InitAnnotationField(
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m.group(2), element_type, _GetDepth(m.group(1)))
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break
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if m:
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continue
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m = _PROGUARD_ANNOTATION_VALUE_RE.match(line)
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if m:
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state.UpdateCurrentAnnotationFieldValue(
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m.group(2), _GetDepth(m.group(1)))
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else:
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state.InitMethod(None)
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return results
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