1、环境：

ubuntu18

2、安装：

切换到root

  sudo su root
  apt install python-pip
  apt install python-setuptools m2crypto
  pip install shadowsocks

3、配置文件

vim /xxx/shadowsocks.json
根据实际情况配置

{
“server”: “*",
“server_port”: 30000,
“local_address”: “127.0.0.1”,
“local_port”:30000,
“password”: "”,
“method”: “aes-256-cfb”,
“timeout”: 300
}

4、启动

 sslocal -c /xxx/shadowsocks.json -d start

5、问题

• 2018-09-30 10:07:29 INFO loading libcrypto from libcrypto.so.1.1
  Traceback (most recent call last):
  File “/usr/local/bin/sslocal”, line 11, in
  sys.exit(main())
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/local.py”, line 39, in main
  config = shell.get_config(True)
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/shell.py”, line 262, in get_config
  check_config(config, is_local)
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/shell.py”, line 124, in check_config
  encrypt.try_cipher(config[‘password’], config[‘method’])
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/encrypt.py”, line 44, in try_cipher
  Encryptor(key, method)
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/encrypt.py”, line 83, in init
  random_string(self._method_info[1]))
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/encrypt.py”, line 109, in get_cipher
  return m[2](method, key, iv, op)
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/crypto/openssl.py”, line 76, in init
  load_openssl()
  File “/usr/local/lib/python2.7/dist-packages/shadowsocks/crypto/openssl.py”, line 52, in load_openssl
  libcrypto.EVP_CIPHER_CTX_cleanup.argtypes = (c_void_p,)
  File “/usr/lib/python2.7/ctypes/init.py”, line 379, in getattr
  func = self.getitem(name)
  File “/usr/lib/python2.7/ctypes/init.py”, line 384, in getitem
  func = self._FuncPtr((name_or_ordinal, self))
  AttributeError: /usr/lib/x86_64-linux-gnu/libcrypto.so.1.1: undefined symbol: EVP_CIPHER_CTX_cleanup

问题分析：

这个问题是由于在openssl1.1.0版本中，废弃了EVP_CIPHER_CTX_cleanup函数，如官网中所说：

1. copyEVP_CIPHER_CTX was made opaque in OpenSSL 1.1.0. As a result,
   EVP_CIPHER_CTX_reset() appeared and EVP_CIPHER_CTX_cleanup()
   disappeared. [plain] view plain copyEVP_CIPHER_CTX_init() remains
   as an alias for EVP_CIPHER_CTX_reset().

修改方法：

用vim打开文件：

• vim/usr/local/lib/python2.7/dist-packages/shadowsocks/crypto/openssl.py
  (该路径请根据自己的系统情况自行修改，如果不知道该文件在哪里的话，可以使用find命令查找文件位置)跳转到52行（shadowsocks2.8.2版本，其他版本搜索一下cleanup）
• 进入编辑模式将第52行libcrypto.EVP_CIPHER_CTX_cleanup.argtypes = (c_void_p,)
  改为libcrypto.EVP_CIPHER_CTX_reset.argtypes = (c_void_p,)
• 再次搜索cleanup（全文件共2处，此处位于111行），将libcrypto.EVP_CIPHER_CTX_cleanup(self._ctx)
  改为libcrypto.EVP_CIPHER_CTX_reset(self._ctx)
• 保存并退出启动shadowsocks服务