Python implements sending and receiving emails, and uploading email content to BBS through commands

Python implements sending and receiving emails, and uploading email content to BBS through commands

1. Use POP3 service to read mail content

# -*- coding: utf-8 -*-
# 我将所有的功能写成一个个内，以便实现全自动的效果
from email.parser import Parser
from email.header import decode_header
from email.utils import parseaddr

import poplib
import os

# 输入邮件地址, 口令和POP3服务器地址:
email = '你的邮箱地址'#[email protected]等等
password = '邮箱密码'#163和qq不是邮箱的登录密码而是服务密码，在设置里找一下
pop3_server = '邮箱服务器名称'#pop.qq.com等等

#全局变量，用于储存邮件标题和发件人，为后面上传到BBS以及发送邮件有关
title = ''
from_name = ''
from_addr = ''

#判断邮件内容是否是UTF-8编码
def guess_charset(msg):
    charset = msg.get_charset()
    if charset is None:
        content_type = msg.get('Content-Type', '').lower()
        pos = content_type.find('charset=')
        if pos >= 0:
            charset = content_type[pos + 8:].strip()
    return charset

#解码 str--->文字
def decode_str(s):
    value, charset = decode_header(s)[0]
    if charset:
        value = value.decode(charset)
    return value

#indent 用于缩进
def print_info(msg, indent=0):
	global title
	global from_name
	global from_addr 
	if indent == 0:
		for header in ['Subject', 'From', 'To',]:
			value = msg.get(header, '')
			if value:
				if header=='Subject':
					value = decode_str(value)                  
					title = value
				else:
					hdr, addr = parseaddr(value)
					name = decode_str(hdr)
					value = u'%s <%s>' % (name, addr)	
					if header == 'From':
						from_name = name
						from_addr = addr			
			print('%s%s: %s' % ('  ' * indent, header, value))


	if (msg.is_multipart()):
		parts = msg.get_payload()
		for n, part in enumerate(parts):
			#print('%spart %s' % ('  ' * indent, n))
			print('%s--------------------' % ('  ' * indent))
			print_info(part, indent + 1)
	else:
		content_type = msg.get_content_type()
		if content_type=='text/plain' :
			content = msg.get_payload(decode=True)
			charset = guess_charset(msg)
			if charset:
				content = content.decode(charset)
			print('%sText: \n%s' % ('  ' * indent, content))
			#把邮件的内容写入到一个txt文件中
			f = open("./"+ title + ".txt", 'a+')
			f.write(content)
			f.write("\n" +"From: " + from_addr)
			f.close()
			
	return title,from_name,from_addr

class reciveEmail:
	def __init__(self):
		print("start to recive the latest email")

	def pop(self):
		global title
		global from_name
		global from_addr

		# 连接到POP3服务器:
		server = poplib.POP3(pop3_server)
		# 可以打开或关闭调试信息:
		#server.set_debuglevel(1)

		# 身份认证:
		server.user(email)
		server.pass_(password)
		# stat()返回邮件数量和占用空间:
		print('Messages: %s. Size: %s' % server.stat())
		# list()返回所有邮件的编号:
		resp, mails, octets = server.list()
		# 可以查看返回的列表类似[b'1 82923', b'2 2184', ...]
		print(mails)


		# 获取最新一封邮件, 注意索引号从1开始:
		index = len(mails)

		resp, lines, octets = server.retr(index)
		# lines存储了邮件的原始文本的每一行,
		# 可以获得整个邮件的原始文本:
		msg_content = b'\r\n'.join(lines).decode('utf-8')
		# 稍后解析出邮件:

		msg = Parser().parsestr(msg_content)

		title,from_name,from_addr= print_info(msg)
		return title,from_name,from_addr
		# 可以根据邮件索引号直接从服务器删除邮件:
		# server.dele(index)
		# 关闭连接:
		server.quit()

#if __name__ == '__main__':
#	popmail = reciveEmail()
#	popmail.pop()# 测试一下

2. Upload the content of the read email to BBS

# -*- coding: utf-8 -*-
# 这里是我自己搭建的BBS，使用Nodebb论坛，大家可以自己去网上了解一下
# 实现自动发帖还需要在BBS里安装一个插件 nodebb-plugin-write-api
import os
import subprocess
import re

class newTopic:
	def __init__(self):
		print("Ready to create a new topic....")

	def post(self,title,cid):

		self.title = title
		self.cid = cid

		f = open("./" + self.title + ".txt","a+")
		f.seek(0)#将文件指针重置到开头，否则讲读不到内容
		lines = f.read()

		cmd = 'curl -X POST -H "Authorization: Bearer ........" \
			--data "title=' + self.title + '&content=' + lines + '&cid='+ self.cid + '" \
			http://localhost:4567/api/v2/topics'
		# 上面的....表示的是在插件页面生成的用户信息编码，大家可以自己尝试一下

		# 执行命令行并获取结果
		pipe = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout		
		result = pipe.read()
		result = str(result)
		
		#找到tid uid cid等信息
		tucm_id = re.findall(r'"tid":\d+,"uid":\d+,"cid":\d+,"mainPid":\d+', result)
		#列表转换为字符串
		tucm_id = ",".join(tucm_id)
		f.write('\n' + tucm_id)
		f.close()
		print("New topic has been pushed successfully....")


#if __name__ == '__main__':
# 	topic = newTopic()
# 	topic.post('test2','1') #这里测试的是邮件名为test2，发在tid为1的板块下

3. Use the smtp service to send the successfully sent message to the sender just now by email

# -*- coding: utf-8 -*-

#转发tid uid cid等信息

from email import encoders
from email.header import Header
from email.mime.text import MIMEText
from email.utils import parseaddr, formataddr

import smtplib

#解码
def _format_addr(s):
    name, addr = parseaddr(s)
    return formataddr((Header(name, 'utf-8').encode(), addr))

    
class resendEmail():
	def __init__(self):
		print("start to send id message to user.....")

	def resend(self,to_name,to_addr,title):
		# 发件信息
		self.from_addr = '发件邮箱'#可以查看第一篇pop收件
		self.from_name = '显示的发件人名称'
		self.password = '邮箱密码'
		self.smtp_server = '邮箱服务器'

		self.title = title

		self.to_addr = to_addr
		self.to_name = to_name
		
		
		f = open("./" + self.title + ".txt","r")
		lines = f.readlines()# 逐行读取
	
		#邮件内容
		Text = ''.join(lines[:-1])
		msg = MIMEText('Your email has been pushed on bbs successfully!\n' , 'plain', 'utf-8')
		msg['From'] = _format_addr('%s <%s>' % (self.from_name,self.from_addr))#发件人（你自己）
		msg['To'] = _format_addr(self.to_name + '<%s>' % self.to_addr)#收件人
		msg['Subject'] = Header('your email has released on bbs with ' + lines[-1], 'utf-8').encode()#邮件标题
		
		#smtp服务启动到关闭    
		server = smtplib.SMTP(self.smtp_server, 25)
		server.set_debuglevel(1)
		server.login(self.from_name, self.password)
		server.sendmail(self.from_addr, [self.to_addr], msg.as_string())
		server.quit()
		f.close()


#if __name__ == '__main__':
#	idd = resendEmail()
#	idd.resend('xx','[email protected]','test2')#测试发给xx，他的邮箱是[email protected]，之前发来的邮件名字是test2

4. Call all functions written before

#这是前几个文件的名字，你可以自己改动
import pop_email
import new_topic
import resend_email

new_test = pop_email.reciveEmail()
title,from_name,from_addr= new_test.pop()#读邮件到文件中

new_topic = new_topic.newTopic()
new_topic.post(title,'1')#发帖

resend = resend_email.resendEmail()
resend.resend(from_name,from_addr,title)#将发帖成功的消息通过邮件通知他

5. Use the imap service to detect whether there is a new mail. Whenever there is a new mail, it will automatically realize the operations of reading, posting and replying

import imaplib
import re,os
 
def LoginMail(hostname, user, password):
    r = imaplib.IMAP4(hostname)
    r.login(user, password)
    x,y = r.status('INBOX', '(MESSAGES UNSEEN)')#获取邮箱的状态，y是邮箱未读邮件的数量

    import chardet   # 检测编码格式
    encode_type = chardet.detect(y[0])
    y[0] = y[0].decode(encode_type['encoding']) 
    
    unseen = re.findall(r'UNSEEN \d+',y[0])
    num = re.findall(r'\d+',unseen[0])

    num = ''.join(num) # 列表转字符串

    #print(type(int(num)))
    if num > '0':
        #print("There are %s mails unread." % num)
        os.system("python test_mail_topic.py")#调用第4步写好的脚本
    else:
        print("No mail unread")
 
 
if __name__ == '__main__':
    while(True):
        LoginMail('邮箱服务器', '邮箱', '邮箱密码')#可以一直挂在后台