代码 - 开发笔记分享

最后修改人	果农
最后修改时间	2023-12-12 10:20:40
创建人	果农
创建时间	2023-11-27 17:32:44

该文档由果农创建于 2023-11-27 17:32:44 ，果农在 2023-12-12 10:20:40 修改了该文档。

[TOCM]

电信给的猫直接在猫上拨号，自己想折腾成桥接，就得找到超管账号和密码了。过程就省略了。配置文件通过ftp登录普通用户然后直接get下来。
测试了一圈只有下面的`python`可以正常使用。懒得搞`python`环境，直接上`php`了。

## php代码
```php
<?php
$key  =  hex2bin('00000000000000000000000000000000');
$cfg_file  =  fopen("db_user_cfg.xml",  "rb");
$dec_file  =  fopen("db_user_cfg.decode.xml",  "w");
$file_header  =  fread($cfg_file,  60);
while (true) {
	$trunk_info  =  fread($cfg_file,  12);
	$trunk_data  =  fread($cfg_file,  65536);
	$trunk_real_size  =  unpack('N',  $trunk_info)[1];
	$trunk_size  =  unpack('N',  substr($trunk_info,  4,  4))[1];
	$next_trunk  =  unpack('N',  substr($trunk_info,  8,  4))[1];
	echo  $trunk_real_size  .  ' '  .  $trunk_size  .  ' '  .  $next_trunk  .  "\n";
	$plain_text  =  openssl_decrypt($trunk_data,  'AES-128-ECB',  $key,  OPENSSL_RAW_DATA  |  OPENSSL_ZERO_PADDING);
	fwrite($dec_file,  decrypt(bin2hex($trunk_data)));
	if ($next_trunk  ==  0) {
		break;
	}
}
fclose($cfg_file);
fclose($dec_file);
```
## python代码
```python
from Crypto.Cipher import AES
from binascii import a2b_hex
KEY = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
def decrypt(text):
    cryptor = AES.new(KEY, AES.MODE_ECB)
    plain_text = cryptor.decrypt(a2b_hex(text))
    return plain_text
cfg_file = open("db_user_cfg.xml", "rb")
dec_file = open("db_user_cfg.decode.xml", "w")
file_header = cfg_file.read(60)
while 1:
    trunk_info = cfg_file.read(12)
    trunk_data = cfg_file.read(65536)
    trunk_real_size = int.from_bytes(trunk_info[0:4], byteorder='big', signed=False)
    trunk_size = int.from_bytes(trunk_info[4:8], byteorder='big', signed=False)
    next_trunk = int.from_bytes(trunk_info[8:12], byteorder='big', signed=False)
    print(trunk_real_size, trunk_size, next_trunk)
    dec_file.write(decrypt(trunk_data.hex()).decode(encoding="utf-8"))
    if next_trunk==0:
        break
```