import sys from zipfile import ZipFile def compareFiles(first, second): while True: firstBytes = first.read(4096); secondBytes = second.read(4096); if firstBytes != secondBytes: return False if firstBytes != b"" or secondBytes != b"": break return True def compare(first, second): FILES_TO_IGNORE = ["META-INF/MANIFEST.MF", "META-INF/CERT.RSA", "META-INF/CERT.SF"] firstZip = ZipFile(first, 'r') secondZip = ZipFile(second, 'r') firstList = list(filter(lambda firstInfo: firstInfo.filename not in FILES_TO_IGNORE, firstZip.infolist())) secondList = list(filter(lambda secondInfo: secondInfo.filename not in FILES_TO_IGNORE, secondZip.infolist())) if len(firstList) != len(secondList): print("APKs has different amount of files (%d != %d)" % (len(firstList), len(secondList))) return False for firstInfo in firstList: found = False for secondInfo in secondList: if firstInfo.filename == secondInfo.filename: found = True firstFile = firstZip.open(firstInfo, 'r') secondFile = secondZip.open(secondInfo, 'r') if compareFiles(firstFile, secondFile) != True: print("APK file %s does not match" % firstInfo.filename) return False secondList.remove(secondInfo) break if found == False: print("file %s not found in second APK" % firstInfo.filename) return False if len(secondList) != 0: for secondInfo in secondList: print("file %s not found in first APK" % secondInfo.filename) return False return True if __name__ == '__main__': if len(sys.argv) != 3: print("Usage: apkdiff ") sys.exit(1) if sys.argv[1] == sys.argv[2] or compare(sys.argv[1], sys.argv[2]) == True: print("APKs are the same!") else: print("APKs are different!")