Python Writer.write_method方法代码示例

# 需要导入模块: from androguard.decompiler.dad.writer import Writer [as 别名]
# 或者: from androguard.decompiler.dad.writer.Writer import write_method [as 别名]
class DvMethod():
    def __init__(self, methanalysis):
        method = methanalysis.get_method()
        self.start_block = next(methanalysis.get_basic_blocks().get(), None)
        self.cls_name = method.get_class_name()
        self.name = method.get_name()
        self.lparams = []
        self.var_to_name = {}
        self.writer = None
        self.graph = None

        access = method.get_access_flags()
        self.access = [flag for flag in util.ACCESS_FLAGS_METHODS
                                     if flag & access]
        desc = method.get_descriptor()
        self.type = util.get_type(desc.split(')')[-1])
        self.params_type = util.get_params_type(desc)

        self.exceptions = methanalysis.exceptions.exceptions

        code = method.get_code()
        if code is None:
            logger.debug('No code : %s %s', self.name, self.cls_name)
        else:
            start = code.registers_size - code.ins_size
            if 0x8 not in self.access:
                self.var_to_name[start] = ThisParam(start, self.name)
                self.lparams.append(start)
                start += 1
            num_param = 0
            for ptype in self.params_type:
                param = start + num_param
                self.lparams.append(param)
                self.var_to_name.setdefault(param, Param(param, ptype))
                num_param += util.get_type_size(ptype)
        if 0:
            from androguard.core import bytecode
            bytecode.method2png('/tmp/dad/graphs/%s#%s.png' % \
                (self.cls_name.split('/')[-1][:-1], self.name), methanalysis)

    def process(self):
        logger.debug('METHOD : %s', self.name)

        # Native methods... no blocks.
        if self.start_block is None:
            return logger.debug('Native Method.')

        graph = construct(self.start_block, self.var_to_name, self.exceptions)
        self.graph = graph

        if 0:
            util.create_png(self.cls_name, self.name, graph, '/tmp/dad/blocks')

        defs, uses = build_def_use(graph, self.lparams)
        dead_code_elimination(graph, uses, defs)
        register_propagation(graph, uses, defs)
        del uses, defs

        # After the DCE pass, some nodes may be empty, so we can simplify the
        # graph to delete these nodes.
        # We start by restructuring the graph by spliting the conditional nodes
        # into a pre-header and a header part.
        graph.split_if_nodes()
        # We then simplify the graph by merging multiple statement nodes into
        # a single statement node when possible. This also delete empty nodes.
        graph.simplify()
        graph.reset_rpo()

        idoms = graph.immediate_dominators()
        identify_structures(graph, idoms)

        if 0:
            util.create_png(self.cls_name, self.name, graph,
                                                    '/tmp/dad/structured')

        self.writer = Writer(graph, self)
        self.writer.write_method()
        del graph

    def show_source(self):
        if self.writer:
            print self.writer

    def get_source(self):
        if self.writer:
            return '%s' % self.writer
        return ''

    def __repr__(self):
        return 'Method %s' % self.name

# 需要导入模块: from androguard.decompiler.dad.writer import Writer [as 别名]
# 或者: from androguard.decompiler.dad.writer.Writer import write_method [as 别名]
class DvMethod(object):

    def __init__(self, methanalysis):
        method = methanalysis.get_method()
        self.method = method
        self.start_block = next(methanalysis.get_basic_blocks().get(), None)
        self.cls_name = method.get_class_name()
        self.name = method.get_name()
        self.lparams = []
        self.var_to_name = defaultdict()
        self.writer = None
        self.graph = None
        self.ast = None

        self.access = util.get_access_method(method.get_access_flags())

        desc = method.get_descriptor()
        self.type = desc.split(')')[-1]
        self.params_type = util.get_params_type(desc)
        self.triple = method.get_triple()

        self.exceptions = methanalysis.exceptions.exceptions

        code = method.get_code()
        if code is None:
            logger.debug('No code : %s %s', self.name, self.cls_name)
        else:
            start = code.registers_size - code.ins_size
            if 'static' not in self.access:
                self.var_to_name[start] = ThisParam(start, self.cls_name)
                self.lparams.append(start)
                start += 1
            num_param = 0
            for ptype in self.params_type:
                param = start + num_param
                self.lparams.append(param)
                self.var_to_name[param] = Param(param, ptype)
                num_param += util.get_type_size(ptype)
        if not __debug__:
            from androguard.core import bytecode
            bytecode.method2png('/tmp/dad/graphs/%s#%s.png' % \
                (self.cls_name.split('/')[-1][:-1], self.name), methanalysis)

    def process(self, doAST=False):
        logger.debug('METHOD : %s', self.name)

        # Native methods... no blocks.
        if self.start_block is None:
            logger.debug('Native Method.')
            if doAST:
                self.ast = JSONWriter(None, self).get_ast()
            else:
                self.writer = Writer(None, self)
                self.writer.write_method()
            return

        graph = construct(self.start_block, self.var_to_name, self.exceptions)
        self.graph = graph

        if not __debug__:
            util.create_png(self.cls_name, self.name, graph, '/tmp/dad/blocks')

        use_defs, def_uses = build_def_use(graph, self.lparams)
        split_variables(graph, self.var_to_name, def_uses, use_defs)
        dead_code_elimination(graph, def_uses, use_defs)
        register_propagation(graph, def_uses, use_defs)

        place_declarations(graph, self.var_to_name, def_uses, use_defs)
        del def_uses, use_defs
        # After the DCE pass, some nodes may be empty, so we can simplify the
        # graph to delete these nodes.
        # We start by restructuring the graph by spliting the conditional nodes
        # into a pre-header and a header part.
        split_if_nodes(graph)
        # We then simplify the graph by merging multiple statement nodes into
        # a single statement node when possible. This also delete empty nodes.

        simplify(graph)
        graph.compute_rpo()

        if not __debug__:
            util.create_png(self.cls_name, self.name, graph,
                            '/tmp/dad/pre-structured')

        identify_structures(graph, graph.immediate_dominators())

        if not __debug__:
            util.create_png(self.cls_name, self.name, graph,
                            '/tmp/dad/structured')

        if doAST:
            self.ast = JSONWriter(graph, self).get_ast()
        else:
            self.writer = Writer(graph, self)
            self.writer.write_method()

    def get_ast(self):
        return self.ast

    def show_source(self):
#.........这里部分代码省略.........

# 需要导入模块: from androguard.decompiler.dad.writer import Writer [as 别名]
# 或者: from androguard.decompiler.dad.writer.Writer import write_method [as 别名]
class DvMethod:
    """
    This is a wrapper around :class:`~androguard.core.analysis.analysis.MethodAnalysis` and
    :class:`~androguard.core.bytecodes.dvm.EncodedMethod` inside the decompiler.
    """
    def __init__(self, methanalysis):
        """
        :param androguard.core.analysis.analysis.MethodAnalysis methanalysis:
        """
        method = methanalysis.get_method()
        self.method = method
        self.start_block = next(methanalysis.get_basic_blocks().get(), None)
        self.cls_name = method.get_class_name()
        self.name = method.get_name()
        self.lparams = []
        self.var_to_name = defaultdict()
        self.writer = None
        self.graph = None
        self.ast = None

        self.access = util.get_access_method(method.get_access_flags())

        desc = method.get_descriptor()
        self.type = desc.split(')')[-1]
        self.params_type = util.get_params_type(desc)
        self.triple = method.get_triple()

        self.exceptions = methanalysis.exceptions.exceptions

        code = method.get_code()
        if code is None:
            logger.debug('No code : %s %s', self.name, self.cls_name)
        else:
            start = code.registers_size - code.ins_size
            if 'static' not in self.access:
                self.var_to_name[start] = ThisParam(start, self.cls_name)
                self.lparams.append(start)
                start += 1
            num_param = 0
            for ptype in self.params_type:
                param = start + num_param
                self.lparams.append(param)
                self.var_to_name[param] = Param(param, ptype)
                num_param += util.get_type_size(ptype)

        if not __debug__:
            from androguard.core import bytecode
            # TODO: use tempfile to create a correct tempfile (cross platform compatible)
            bytecode.method2png('/tmp/dad/graphs/{}#{}.png'.format(self.cls_name.split('/')[-1][:-1], self.name), methanalysis)

    def process(self, doAST=False):
        logger.debug('METHOD : %s', self.name)

        # Native methods... no blocks.
        if self.start_block is None:
            logger.debug('Native Method.')
            if doAST:
                self.ast = JSONWriter(None, self).get_ast()
            else:
                self.writer = Writer(None, self)
                self.writer.write_method()
            return

        # Construct the CFG
        graph = construct(self.start_block, self.var_to_name, self.exceptions)
        self.graph = graph

        if not __debug__:
            # TODO: use tempfile to create a correct tempfile (cross platform compatible)
            util.create_png(self.cls_name, self.name, graph, '/tmp/dad/blocks')

        use_defs, def_uses = build_def_use(graph, self.lparams)
        split_variables(graph, self.var_to_name, def_uses, use_defs)
        dead_code_elimination(graph, def_uses, use_defs)
        register_propagation(graph, def_uses, use_defs)

        # FIXME var_to_name need to contain the created tmp variables.
        # This seems to be a workaround, we add them into the list manually
        for var, i in def_uses:
            if not isinstance(var, int):
                self.var_to_name[var] = var.upper()

        place_declarations(graph, self.var_to_name, def_uses, use_defs)
        del def_uses, use_defs
        # After the DCE pass, some nodes may be empty, so we can simplify the
        # graph to delete these nodes.
        # We start by restructuring the graph by spliting the conditional nodes
        # into a pre-header and a header part.
        split_if_nodes(graph)
        # We then simplify the graph by merging multiple statement nodes into
        # a single statement node when possible. This also delete empty nodes.

        simplify(graph)
        graph.compute_rpo()

        if not __debug__:
            # TODO: use tempfile to create a correct tempfile (cross platform compatible)
            util.create_png(self.cls_name, self.name, graph, '/tmp/dad/pre-structured')

        identify_structures(graph, graph.immediate_dominators())
#.........这里部分代码省略.........