Python 利用邮件系统完成远程控制电脑的实现（关机、重启等）

0. 我们如何通过邮件系统完成远程控制电脑（关机、重启等）？

实现思路：

需要有两个邮箱：接收指令邮箱（A）发送指令邮箱（B）

被控制的电脑（查看 A 邮箱）：
1. 每隔指定时间监听 A 邮箱 查看最近的邮件
2. 打开最近邮件，看是否是 B 邮箱地址发来的执行命令
3. 向 A 和 B 邮箱都发送 主题为：反馈 内容为：“目标计算机已收到指令！开始执行：xxx 指令！” 邮件
4. 执行指定邮箱发送的执行命令

远程人员操作：

登录 B 邮箱，向 A 邮箱发送 主题为：“目标计算机执行” 内容为：xxx指令（例如：关机）

1. 代码编写

import poplibimport smtplibimport osimport timefrom email.parser import Parserfrom email.header import decode_headerfrom email.utils import parseaddrfrom email.mime.text import MIMETextfrom email.header import Header email_params = dict()email_params['email_message'] = '反馈'email_params['email_subject'] = '目标计算机反馈'email_params['email_from'] = 'A邮箱'email_params['email_user'] = 'A邮箱'email_params['email_exec'] = 'B邮箱'email_params['email_to'] = ['A邮箱', 'B邮箱']email_params['email_smtp'] = 'smtp.163.com'email_params['email_pop'] = 'pop.163.com'email_params['email_pass'] = 'A邮箱的密码（smtp、pop3的密码）'interval_time = 5  def decode_str(s):  value, charset = decode_header(s)[0]  if charset:    value = value.decode(charset)  return value  def get_headers(message):  headers = dict()  for header in ['From', 'To', 'Subject']:    value = message.get(header, '')    if value:      if header == 'Subject':        headers['Subject'] = decode_str(value)      elif header == 'From':        hdr, addr = parseaddr(value)        headers['From'] = decode_str(addr)      elif header == 'To':        hdr, addr = parseaddr(value)        headers['To'] = decode_str(addr)  return headers  def guess_charset(message):  charset = message.get_charset()  if charset is None:    content_type = message.get('Content-Type', '').lower()    pos = content_type.find('charset=')    if pos >= 0:      charset = content_type[pos + 8:].strip()  return charset  def get_content(message):  for part in message.walk():    content_type = part.get_content_type()    charset = guess_charset(part)    if content_type == 'text/plain' and charset:      try:        return part.get_payload(decode=True).decode(charset)      except AttributeError:        print('type error')      except LookupError:        print("unknown encoding: utf-8")  def receive_email():  email_server = poplib.POP3_SSL(email_params['email_pop'])  email_server.user(email_params['email_user'])  email_server.pass_(email_params['email_pass'])  resp, mails, octets = email_server.list()  index = len(mails)  if index == 0:    return None, None  resp, lines, octets = email_server.retr(index)  message = b'/r/n'.join(lines).decode('utf-8', 'ignore')  message = Parser().parsestr(message)  email_server.quit()  return get_headers(message), get_content(message)  def send_email(email_message):  message = MIMEText(email_message, 'plain', 'utf-8')  message['Subject'] = Header(email_params['email_subject'], 'utf-8')  message['From'] = Header(email_params['email_from'])  message['To'] = Header(','.join(email_params['email_to']), 'utf-8')   email_server = smtplib.SMTP_SSL(email_params['email_smtp'])  email_server.login(email_params['email_from'], email_params['email_pass'])  email_server.sendmail(email_params['email_from'], email_params['email_to'], message.as_string())  email_server.close()  def exec_operator(exec_content):  if exec_content == '关机':    os.system("shutdown -s -t 1")  elif exec_content == '重启':    os.system("shutdown -r")  else:    os.system(exec_content)  if __name__ == '__main__':  while True:    headers, content = receive_email()    if headers and content and headers['From'] == email_params['email_exec'] and headers['Subject'] == '目标计算机执行':      email_message = "目标计算机已接收到指令！开始执行: " + content + " 指令！"      send_email(email_message)      exec_operator(content)    time.sleep(interval_time)