Python3使用微软AD域账号认证

环境：Centos7 + Python3.8.0
使用python包：
```python
pip3 list
  python-ldap         3.3.1
```
示例中使用的参数：
域控ip、域、密码： 192.168.1.1 ，”bj.localnetwork.cn”,  ‘123456789’

公共账户DN信息（CN项为公共邮箱中文名）：
CN=邮箱中文名,OU=公共邮箱,OU=Person,DC=bj,DC=localnetwork,DC=cn

用户OU：
OU=Person,DC=bj,DC=localnetwork,DC=cn

[LDAP：什么是DN](https://lesca.me/archives/what-is-distinguished-names.html "LDAP：什么是DN")
在LDAP协议中，DN用于指向一个LDAP对象，DN由一系列RDN(relative distinguished names)组成。
RDN之间用“逗号”隔开，它是一个键值对，格式为：attribute=value

```python
# Copyright: (c) OpenSpug Organization. https://github.com/openspug/spug
# Copyright: (c) <spug.dev@gmail.com>
# Released under the AGPL-3.0 License.

#from apps.setting.models import Setting
import ldap
import json

class LDAP:
    def __init__(self):
        #server_info = Setting.objects.filter(key='ldap_service').first()
        #ldap_info_dict = json.loads(server_info.value)
        self.server = "192.168.1.1"
        self.port = "389"
        # self.rules = ldap_info_dict['rules']
        self.admin_dn = "CN=技术部邮箱,OU=公共邮箱,OU=Person,DC=bj,DC=localnetwork,DC=cn"
        self.password = "123456789"
        self.base_dn = "OU=Person,DC=bj,DC=localnetwork,DC=cn"

def valid_user(self, username, password):
        try:
            print("准备连接ldap")
            conn = ldap.initialize("ldap://{0}:{1}".format(self.server, self.port), bytes_mode=False)
            print("验证")
            conn.simple_bind_s(self.admin_dn, self.password)
            print("连接ldap成功")
            #search_filter = f'({self.rules}={username})'
            search_filter = "sAMAccountName=" + username
            ldap_result_id = conn.search(self.base_dn, ldap.SCOPE_SUBTREE, search_filter, None)
            print("准备搜索用户")
            result_type, result_data = conn.result(ldap_result_id, 0)

if result_type == ldap.RES_SEARCH_ENTRY:
                print("找到用户")
                dn = result_data[0][0]
                #user_info = result_data[0][1]
                #print(dn)
                if conn.simple_bind_s(dn, password):
                    print("用户：%s LDAP认证成功" % username)
                    return True, None
                else:

print("用户：%s LDAP认证失败" % username)
                    return False, None
            else:
                print("认证失败")
                return False, None
        except Exception as error:
            args = error.args
            print("ldap发生意外")
            return False, args[0].get('desc', '未知错误') if args else '%s' % error
```