patching.py 文件源码

def __init__(self, infile, cache=False, cfg_options=None, debugangr=False):
        self.infile = infile
        self.error = False
        self._stack_patch_data = []
        self.stack_increases = {}
        if cfg_options is None:
            cfg_options = {}
        cachename = infile + '.fcfg'

        l.info("Loading %s", infile)
        try:
            if not cache: raise IOError('fuck off')
            fh = open(cachename, 'rb')
            self.project, self.cfg = pickle.load(fh)
            self.cfg.project = self.project
            fh.close()
        except (IOError, OSError, pickle.UnpicklingError):
            if debugangr:
                import ipdb; ipdb.set_trace()
            self.project = Project(infile, load_options={'auto_load_libs': False})
            self.cfg = self.project.analyses.CFGFast(**cfg_options)
            try:
                fh = open(cachename, 'wb')
                pickle.dump((self.project, self.cfg), fh, -1)
                fh.close()
            except (IOError, OSError, pickle.PicklingError):
                l.exception('Error pickling CFG')