from __future__ import print_function ''' Copyright (c) 1999 John Aycock Copyright (c) 2000 by hartmut Goebel Copyright (c) 2015 by Rocky Bernstein Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. See the file 'CHANGES' for a list of changes NB. This is not a masterpiece of software, but became more like a hack. Probably a complete rewrite would be sensefull. hG/2000-12-27 ''' import os, marshal, sys, types PYTHON_VERSION = sys.version_info.major + (sys.version_info.minor / 10.0) PYTHON3 = (sys.version_info >= (3, 0)) import uncompyle6 import uncompyle6.marsh from uncompyle6 import walker, verify, magics sys.setrecursionlimit(5000) __all__ = ['uncompyle_file', 'main'] def _load_file(filename): ''' load a Python source file and compile it to byte-code _load_file(filename: string): code_object filename: name of file containing Python source code (normally a .py) code_object: code_object compiled from this source code This function does NOT write any file! ''' fp = open(filename, 'rb') source = fp.read().decode('utf-8') + '\n' try: co = compile(source, filename, 'exec', dont_inherit=True) except SyntaxError: print('>>Syntax error in %s\n' % filename, file= sys.stderr) raise fp.close() return co def load_module(filename): ''' load a module without importing it load_module(filename: string): code_object filename: name of file containing Python byte-code object (normally a .pyc) code_object: code_object from this file ''' with open(filename, 'rb') as fp: magic = fp.read(4) try: version = float(magics.versions[magic]) except KeyError: raise ImportError("Unknown magic number %s in %s" % (ord(magic[0])+256*ord(magic[1]), filename)) if not (2.5 <= version <= 2.7) and not (3.2 <= version <= 3.4): raise ImportError("This is a Python %s file! Only " "Python 2.5 to 2.7 and 3.2 to 3.4 files are supported." % version) # print version fp.read(4) # timestamp magic_int = magics.magic2int(magic) if version == PYTHON_VERSION: # Note: a higher magic number necessarily mean a later # release. At Python 3.0 the magic number decreased # significantly. Hence the range below. Also note # inclusion of the size info, occurred within a # Python magor/minor release. Hence the test on the # magic value rather than PYTHON_VERSION if 3200 <= magic_int < 20121: fp.read(4) # size mod 2**32 bytecode = fp.read() co = marshal.loads(bytecode) else: co = uncompyle6.marsh.load_code(fp, magic_int) pass return version, co def uncompyle(version, co, out=None, showasm=False, showast=False): """ diassembles and deparses a given code block 'co' """ assert isinstance(co, types.CodeType) # store final output stream for case of error real_out = out or sys.stdout print('# Python %s' % version, file=real_out) if co.co_filename: print('# Embedded file name: %s' % co.co_filename, file=real_out) # Pick up appropriate scanner if version == 2.7: import uncompyle6.scanners.scanner27 as scan scanner = scan.Scanner27() elif version == 2.6: import uncompyle6.scanners.scanner26 as scan scanner = scan.Scanner26() elif version == 2.5: import uncompyle6.scanners.scanner25 as scan scanner = scan.Scanner25() elif version == 3.2: import uncompyle6.scanners.scanner32 as scan scanner = scan.Scanner32() elif version == 3.4: import uncompyle6.scanners.scanner34 as scan scanner = scan.Scanner34() scanner.setShowAsm(showasm, out) tokens, customize = scanner.disassemble(co) if showasm: for t in tokens: print(t, file=real_out) print(file=out) # Build AST from disassembly. walk = walker.Walker(out, scanner, showast=showast) try: ast = walk.build_ast(tokens, customize) except walker.ParserError as e : # parser failed, dump disassembly print(e, file=real_out) raise del tokens # save memory # convert leading '__doc__ = "..." into doc string assert ast == 'stmts' try: if ast[0][0] == walker.ASSIGN_DOC_STRING(co.co_consts[0]): walk.print_docstring('', co.co_consts[0]) del ast[0] if ast[-1] == walker.RETURN_NONE: ast.pop() # remove last node # todo: if empty, add 'pass' except: pass walk.mod_globs = walker.find_globals(ast, set()) walk.gen_source(ast, customize) for g in walk.mod_globs: walk.write('global %s ## Warning: Unused global' % g) if walk.ERROR: raise walk.ERROR def uncompyle_file(filename, outstream=None, showasm=False, showast=False): """ decompile Python byte-code file (.pyc) """ version, co = load_module(filename) if type(co) == list: for con in co: uncompyle(version, con, outstream, showasm, showast) else: uncompyle(version, co, outstream, showasm, showast) co = None # ---- main ---- if sys.platform.startswith('linux') and os.uname()[2][:2] in ['2.', '3.', '4.']: def __memUsage(): mi = open('/proc/self/stat', 'r') from trepan.api import debug; debug() mu = mi.readline().split()[22] mi.close() return int(mu) / 1000000 else: def __memUsage(): return '' def status_msg(do_verify, tot_files, okay_files, failed_files, verify_failed_files): if tot_files == 1: if failed_files: return "decompile failed" elif verify_failed_files: return "decompile verify failed" else: return "Successfully decompiled file" pass pass mess = "decompiled %i files: %i okay, %i failed" % (tot_files, okay_files, failed_files) if do_verify: mess += (", %i verify failed" % verify_failed_files) return mess def main(in_base, out_base, files, codes, outfile=None, showasm=False, showast=False, do_verify=False): ''' in_base base directory for input files out_base base directory for output files (ignored when files list of filenames to be uncompyled (relative to src_base) outfile write output to this filename (overwrites out_base) For redirecting output to - outfile= (out_base is ignored) - files below out_base out_base=... - stdout out_base=None, outfile=None ''' def _get_outstream(outfile): dir = os.path.dirname(outfile) failed_file = outfile + '_failed' if os.path.exists(failed_file): os.remove(failed_file) try: os.makedirs(dir) except OSError: pass return open(outfile, 'w') of = outfile tot_files = okay_files = failed_files = verify_failed_files = 0 # for code in codes: # version = sys.version[:3] # "2.5" # with open(code, "r") as f: # co = compile(f.read(), "", "exec") # uncompyle(sys.version[:3], co, sys.stdout, showasm=showasm, showast=showast) for filename in files: infile = os.path.join(in_base, filename) # print (infile, file=sys.stderr) if of: # outfile was given as parameter outstream = _get_outstream(outfile) elif out_base is None: outstream = sys.stdout else: outfile = os.path.join(out_base, filename) + '_dis' outstream = _get_outstream(outfile) # print(outfile, file=sys.stderr) # try to decomyple the input file try: uncompyle_file(infile, outstream, showasm, showast) tot_files += 1 except KeyboardInterrupt: if outfile: outstream.close() os.remove(outfile) sys.stderr.write("\nLast file: %s " % (infile)) raise except: failed_files += 1 if outfile: outstream.close() os.rename(outfile, outfile + '_failed') else: sys.stderr.write("\n# Can't uncompyle %s\n" % infile) import traceback traceback.print_exc() else: # uncompyle successfull if outfile: outstream.close() if do_verify: try: verify.compare_code_with_srcfile(infile, outfile) if not outfile: print('\n# okay decompyling', infile, __memUsage()) okay_files += 1 except verify.VerifyCmpError as e: verify_failed_files += 1 os.rename(outfile, outfile + '_unverified') if not outfile: print("### Error Verifiying %s" % filename, file=sys.stderr) print(e, file=sys.stderr) else: okay_files += 1 if not outfile: mess = '\n# okay decompyling' # mem_usage = __memUsage() print(mess, infile) if outfile: sys.stdout.write("%s\r" % status_msg(do_verify, tot_files, okay_files, failed_files, verify_failed_files)) sys.stdout.flush() if outfile: sys.stdout.write("\n") sys.stdout.flush() return (tot_files, okay_files, failed_files, verify_failed_files)