offline-pdf-app/xor.py

import glob
import os


hashmap = {
    '0': "7", '1': "3", '2': "5", '3': "1", '4': "9", '5': "2", '6': "6", '7': "4", '8': "8", '9': "0",
    'A': "3", 'B': "7", 'C': "1", 'D': "5", 'E': "9", 'F': "2", 'G': "6", 'H': "4", 'I': "8", 'J': "0",
    'K': "3", 'L': "7", 'M': "1", 'N': "5", 'O': "9", 'P': "2", 'Q': "6", 'R': "4", 'S': "8", 'T': "0",
    'U': "3", 'V': "7", 'W': "1", 'X': "5", 'Y': "9", 'Z': "2",
    'a': "6", 'b': "4", 'c': "8", 'd': "0", 'e': "3", 'f': "7", 'g': "1", 'h': "5", 'i': "9", 'j': "2",
    'k': "6", 'l': "4", 'm': "8", 'n': "0", 'o': "3", 'p': "7", 'q': "1", 'r': "5", 's': "9", 't': "2",
    'u': "6", 'v': "4", 'w': "8", 'x': "0", 'y': "3", 'z': "7", '_': "8", '-': "8"
}

def xorByFileName(filename):
    first_three = filename[:3]

    last_three = filename[-3:]

    xor_result = ''

    for ch in first_three:
        xor_result += hashmap[ch]

    for ch in last_three:
        xor_result += hashmap[ch]

    sixnum = int(xor_result) % 255
    return sixnum


def xor_file_all(filename,key):

    with open(filename, 'rb') as file:
        content = file.read()

    xor_result = b''

    # 仅对文件的前100个字节进行异或操作
    for i, byte in enumerate(content):
        xor_byte = bytes([byte ^ key])
        xor_result += xor_byte

    with open(filename, 'wb') as output_file:
        output_file.write(xor_result)

def xor_file(filename,key):

    with open(filename, 'rb') as file:
        content = file.read()

    xor_result = b''

    # 仅对文件的前100个字节进行异或操作
    for i, byte in enumerate(content[:100]):
        xor_byte = bytes([byte ^ key])
        xor_result += xor_byte

    # 将剩余部分直接拼接到异或后的结果后面
    xor_result += content[100:]

    with open(filename, 'wb') as output_file:
        output_file.write(xor_result)


def is_html_content(file_path):
    return True
    try:
        with open(file_path, 'r', encoding='utf-8') as file:
            content = file.read()
            if "<html" in content.lower():
                return True
            else:
                return False
    except Exception:
        print("文件不存在。")
        return False

if __name__ == '__main__':
    for fff in glob.glob(r"E:\code\zd\desktop\offline-pdf-app\files\*"):
        print(os.path.basename(fff))
        if not os.path.isfile(fff):
            print(fff)
            key = xorByFileName(os.path.basename(fff))
            indexFile = fff + r"\index.html"
            if is_html_content(indexFile):
                xor_file_all(indexFile,key)
                for x in glob.glob(fff + r"\data\pres\*.png")+ glob.glob(fff + r"\data\pres\*.mp4")+glob.glob(fff + r"\data\pres\*.jpg"):
                    xor_file(x,key)