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| 1 | +#!/usr/bin/env python2 |
| 2 | + |
| 3 | +# --------------------------------------------------------------- |
| 4 | +# Assembler / Disassembler in one script. |
| 5 | +# For Krakatau commit 86dfd43d148f65226ae4c020aff7421637e3756d |
| 6 | +# --------------------------------------------------------------- |
| 7 | + |
| 8 | +from __future__ import print_function |
| 9 | + |
| 10 | +import functools |
| 11 | +import os.path |
| 12 | +import time, zipfile, sys |
| 13 | +import os.path, time |
| 14 | +import Krakatau |
| 15 | +from Krakatau import script_util |
| 16 | +from Krakatau.classfileformat.reader import Reader |
| 17 | +from Krakatau.classfileformat.classdata import ClassData |
| 18 | +from Krakatau.assembler.disassembly import Disassembler |
| 19 | +from Krakatau.assembler import parse |
| 20 | + |
| 21 | +try: |
| 22 | + from StringIO import StringIO |
| 23 | +except ImportError: |
| 24 | + from io import StringIO |
| 25 | + |
| 26 | + |
| 27 | +def readArchive(archive, name): |
| 28 | + with archive.open(name.decode('utf8')) as f: |
| 29 | + return f.read() |
| 30 | + |
| 31 | + |
| 32 | +def readFile(filename): |
| 33 | + with open(filename, 'rb') as f: |
| 34 | + return f.read() |
| 35 | + |
| 36 | + |
| 37 | +def disassembleSub(readTarget, out, targets, roundtrip=False, outputClassName=True): |
| 38 | + start_time = time.time() |
| 39 | + with out: |
| 40 | + for i, target in enumerate(targets): |
| 41 | + print('processing target {}, {}/{} remaining'.format(target, len(targets)-i, len(targets))) |
| 42 | + |
| 43 | + data = readTarget(target) |
| 44 | + clsdata = ClassData(Reader(data)) |
| 45 | + |
| 46 | + if outputClassName: |
| 47 | + name = clsdata.pool.getclsutf(clsdata.this) |
| 48 | + else: |
| 49 | + name = target.rpartition('.')[0] or target |
| 50 | + |
| 51 | + output = StringIO() |
| 52 | + # output = sys.stdout |
| 53 | + Disassembler(clsdata, output.write, roundtrip=roundtrip).disassemble() |
| 54 | + |
| 55 | + filename = out.write(name, output.getvalue()) |
| 56 | + if filename is not None: |
| 57 | + print('Class written to', filename) |
| 58 | + print(time.time() - start_time, ' seconds elapsed') |
| 59 | + |
| 60 | + |
| 61 | +def assembleSource(source, basename, fatal=False): |
| 62 | + source = source.replace('\t', ' ') + '\n' |
| 63 | + return list(parse.assemble(source, basename, fatal=fatal)) |
| 64 | + |
| 65 | + |
| 66 | +def assembleClass(filename): |
| 67 | + basename = os.path.basename(filename) |
| 68 | + with open(filename, 'rU') as f: |
| 69 | + source = f.read() |
| 70 | + return assembleSource(source, basename) |
| 71 | + |
| 72 | + |
| 73 | +def assemble(args): |
| 74 | + log = script_util.Logger('warning' if args.q else 'info') |
| 75 | + log.info(script_util.copyright) |
| 76 | + |
| 77 | + out = script_util.makeWriter(args.out, '.class') |
| 78 | + targets = script_util.findFiles(args.target, args.r, '.j') |
| 79 | + |
| 80 | + start_time = time.time() |
| 81 | + with out: |
| 82 | + for i, target in enumerate(targets): |
| 83 | + log.info('Processing file {}, {}/{} remaining'.format(target, len(targets)-i, len(targets))) |
| 84 | + |
| 85 | + pairs = assembleClass(target) |
| 86 | + for name, data in pairs: |
| 87 | + filename = out.write(name, data) |
| 88 | + log.info('Class written to', filename) |
| 89 | + print('Total time', time.time() - start_time) |
| 90 | + |
| 91 | + |
| 92 | +def disassemble(args): |
| 93 | + print(script_util.copyright) |
| 94 | + |
| 95 | + targets = script_util.findFiles(args.target, args.r, '.class') |
| 96 | + |
| 97 | + jar = args.path |
| 98 | + if jar is None and args.target.endswith('.jar'): |
| 99 | + jar = args.target |
| 100 | + |
| 101 | + out = script_util.makeWriter(args.out, '.j') |
| 102 | + if jar is not None: |
| 103 | + with zipfile.ZipFile(jar, 'r') as archive: |
| 104 | + readFunc = functools.partial(readArchive, archive) |
| 105 | + disassembleSub(readFunc, out, targets, roundtrip=args.roundtrip) |
| 106 | + else: |
| 107 | + disassembleSub(readFile, out, targets, roundtrip=args.roundtrip) |
| 108 | + |
| 109 | + |
| 110 | +if __name__ == "__main__": |
| 111 | + import argparse |
| 112 | + parser = argparse.ArgumentParser(description='Krakatau bytecode assembler/disassembler') |
| 113 | + parser.add_argument('-d', action='store_true', help='Disassemble mode') |
| 114 | + parser.add_argument('-out', help='Path to generate files in') |
| 115 | + parser.add_argument('-r', action='store_true', help="Process all files in the directory target and subdirectories") |
| 116 | + parser.add_argument('-q', action='store_true', help="Only display warnings and errors (asm mode only)") |
| 117 | + parser.add_argument('-path', help='Jar to look for class in (disasm mode only)') |
| 118 | + parser.add_argument('-roundtrip', action='store_true', help='Create assembly file that can roundtrip to original binary (disasm mode only).') |
| 119 | + parser.add_argument('target', help='Name of file to assemble or name of class or jar file to decompile') |
| 120 | + args = parser.parse_args() |
| 121 | + |
| 122 | + if args.d: |
| 123 | + disassemble(args) |
| 124 | + else: |
| 125 | + assemble(args) |
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