193 lines
8.9 KiB
Python
193 lines
8.9 KiB
Python
# pylint: disable=C0301, C0114
|
|
import json
|
|
import imaplib
|
|
import smtplib
|
|
import email
|
|
from email.mime.multipart import MIMEMultipart
|
|
from email.mime.text import MIMEText
|
|
from email.utils import parseaddr
|
|
from email.header import decode_header
|
|
import time
|
|
import datetime
|
|
import logging
|
|
import socket
|
|
import re
|
|
import socks
|
|
|
|
def provider_in(address, provider_list):
|
|
"""Check if the provider is in the provider list"""
|
|
for provider in provider_list:
|
|
if address.endswith(provider):
|
|
return True
|
|
return False
|
|
|
|
def decode_mime_words(s):
|
|
"""Decodes a string containing multiple MIME words"""
|
|
decoded_fragments = decode_header(s)
|
|
return ''.join(
|
|
str(fragment, encoding or 'utf-8') if isinstance(fragment, bytes) else fragment
|
|
for fragment, encoding in decoded_fragments
|
|
)
|
|
|
|
def add_mask(original_msg, content, is_html):
|
|
"""Adds a mask to the content"""
|
|
original_subject = decode_mime_words(original_msg['Subject'])
|
|
from_name, from_address = parseaddr(original_msg['From'])
|
|
from_name = decode_mime_words(from_name)
|
|
to_name, to_address = parseaddr(original_msg['To'])
|
|
to_name = decode_mime_words(to_name)
|
|
header = f"""<html><head></head><body><table style="background:#3d3d3d;padding:8px 16px;margin-top:30px;margin-bottom:30px;width:96%;border-radius:6px;max-width:1200px" width="100%" bgcolor="#3D3D3D" align="center"><tbody><tr><td width="50%" align="left" style="font-weight:bolder;color:#fff"><p style="font-size:x-large;margin-block:.2em">Forwarded Email</p>{'' if is_html else '<p style="font-size: medium; margin-block: 0.2em;">This email is plain text, it may have display issues</p>'}</td><td width="50%" align="right" style="color:#fff;text-align:right"><p style="margin-block: 0.1em">From: {from_name} <<a href="mailto:{from_address}">{from_address}</a>></p><p style="margin-block: 0.1em">To: {to_name} <<a href="mailto:{to_address}">{to_address}</a>></p><p style="margin-block:.1em">Subject: {original_subject}</p></td></tr></tbody></table><table style="padding:0;max-width:850px" width="100%" align="center"><tbody><tr><td style="padding-left:15px;padding-right:15px" width="100%">"""
|
|
footer = """</td></tr></tbody></table><table style="background:#3d3d3d;padding:8px 16px;margin-top:30px;margin-bottom:30px;width:96%;border-radius:6px;max-width:1200px" width="100%" bgcolor="#3D3D3D" align="center"><tbody><tr><td width="50%" align="left" style="color:#d22;font-size:xx-large;font-weight:bolder">FORWARDED</td><td width="50%" align="right" style="color:#fff;text-align:left"><p style="font-size:x-large;font-weight:700;margin-block:0">Notice:</p><p style="margin-block:.1em"> This is a automatically forwarded email, which means it may contains something bad.</p><p style="margin-block:.1em"> You shouldn't reply directly to this email, it will never reach your destination!</p></td></tr></tbody></table></body></html>"""
|
|
return header + content + footer
|
|
|
|
def load_config(config_file='config.json'):
|
|
"""Loads the configuration file"""
|
|
with open(config_file, 'r', encoding='utf-8') as file:
|
|
config = json.load(file)
|
|
return config
|
|
|
|
def set_proxy(proxy_config):
|
|
"""Sets the proxy"""
|
|
socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5, proxy_config['server'], proxy_config['port'])
|
|
socket.socket = socks.socksocket
|
|
|
|
def setup_logging(filename):
|
|
"""Sets up the logging"""
|
|
logger = logging.getLogger()
|
|
logger.setLevel('DEBUG')
|
|
basic_format = "%(asctime)s >> %(levelname)s - %(message)s"
|
|
date_format = '%Y-%m-%d %H:%M:%S'
|
|
formatter = logging.Formatter(basic_format, date_format)
|
|
chlr = logging.StreamHandler()
|
|
chlr.setFormatter(formatter)
|
|
chlr.setLevel('INFO')
|
|
fhlr = logging.FileHandler(filename, encoding='utf-8')
|
|
fhlr.setFormatter(formatter)
|
|
logger.addHandler(chlr)
|
|
logger.addHandler(fhlr)
|
|
return logger
|
|
|
|
def get_unforwarded_emails(account_config, logger):
|
|
"""Gets the unforwarded emails"""
|
|
if account_config['proxy']['enabled']:
|
|
set_proxy(account_config['proxy'])
|
|
|
|
if account_config['imap'].get('use_ssl', True):
|
|
imap = imaplib.IMAP4_SSL(account_config['imap']['server'], account_config['imap']['port'], timeout=10)
|
|
else:
|
|
imap = imaplib.IMAP4(account_config['imap']['server'], account_config['imap']['port'], timeout=10)
|
|
|
|
imap.login(account_config['email'], account_config['password'])
|
|
|
|
if provider_in(account_config['email'], ["163.com", "126.com"]):
|
|
imaplib.Commands['ID'] = 'AUTH'
|
|
args = ("name","XXXX","contact","XXXX@163.com","version","1.0.0","vendor","myclient")
|
|
imap._simple_command('ID', '("' + '" "'.join(args) + '")') # pylint: disable=W0212
|
|
|
|
imap.select()
|
|
|
|
_, messages = imap.search(None, 'UNSEEN')
|
|
email_ids = messages[0].split()
|
|
|
|
emails = []
|
|
for email_id in email_ids:
|
|
_, data = imap.fetch(email_id, '(RFC822)')
|
|
for response_part in data:
|
|
if isinstance(response_part, tuple):
|
|
msg = email.message_from_bytes(response_part[1]) # pylint: disable=E1136
|
|
emails.append((email_id, msg))
|
|
imap.store(email_id, '+FLAGS', '\\Seen')
|
|
|
|
imap.logout()
|
|
if len(emails) > 0:
|
|
logger.info(f"Retrieved {len(emails)} new emails from {account_config['email']}")
|
|
return emails
|
|
|
|
def forward_emails(account_config, emails, logger):
|
|
"""Forwards the emails"""
|
|
if account_config['proxy']['enabled']:
|
|
set_proxy(account_config['proxy'])
|
|
|
|
smtp = None
|
|
if account_config['smtp'].get('use_ssl', False):
|
|
smtp = smtplib.SMTP_SSL(account_config['smtp']['server'], account_config['smtp']['port'], timeout=10)
|
|
else:
|
|
smtp = smtplib.SMTP(account_config['smtp']['server'], account_config['smtp']['port'], timeout=10)
|
|
if account_config['smtp'].get('use_starttls', False):
|
|
smtp.starttls()
|
|
|
|
smtp.login(account_config['email'], account_config['password'])
|
|
|
|
for email_id, original_msg in emails:
|
|
for recipient in account_config['forward']['to']:
|
|
from_name, from_address = parseaddr(original_msg['From'])
|
|
from_name = decode_mime_words(from_name)
|
|
to_name, to_address = parseaddr(original_msg['To'])
|
|
to_name = decode_mime_words(to_name)
|
|
msg = MIMEMultipart('mixed')
|
|
msg['From'] = f'"{from_name} ({from_address}) via Forwarder" <{account_config["email"]}>'
|
|
msg['To'] = f'"{to_name} ({to_address}) via Forwarder" <{recipient}>'
|
|
original_subject = decode_mime_words(original_msg['Subject'])
|
|
msg['Subject'] = original_subject
|
|
|
|
body = ""
|
|
attachments = []
|
|
if original_msg.is_multipart():
|
|
for part in original_msg.walk():
|
|
content_type = part.get_content_type()
|
|
content_disposition = str(part.get("Content-Disposition"))
|
|
|
|
if "attachment" in content_disposition or part.get_filename():
|
|
attachments.append(part)
|
|
elif content_type == 'text/html':
|
|
body = part.get_payload(decode=True).decode()
|
|
elif content_type == 'text/plain' and not body:
|
|
body = part.get_payload(decode=True).decode()
|
|
else:
|
|
body = original_msg.get_payload(decode=True).decode()
|
|
|
|
if not body:
|
|
logger.error(f"Failed to extract body from email {email_id}")
|
|
continue
|
|
|
|
is_html = bool(re.compile(r'<[^>]+>').search(body))
|
|
|
|
if not is_html:
|
|
body = body.replace('\n', '<br>')
|
|
|
|
html_content = add_mask(original_msg, body, is_html)
|
|
msg.attach(MIMEText(html_content, 'html'))
|
|
|
|
for attachment in attachments:
|
|
filename = attachment.get_filename()
|
|
if decode_header(filename):
|
|
filename = decode_mime_words(filename)
|
|
attachment.add_header('Content-Disposition', 'attachment', filename=filename)
|
|
msg.attach(attachment)
|
|
|
|
smtp.sendmail(account_config['email'], recipient, msg.as_string())
|
|
logger.info(f"Forwarded email {original_subject} from {account_config['email']} to {recipient}")
|
|
|
|
smtp.quit()
|
|
|
|
def main():
|
|
"""Main function"""
|
|
config = load_config()
|
|
logger = setup_logging(config['log'])
|
|
|
|
while True:
|
|
for account in config['accounts']:
|
|
if account['enabled']:
|
|
try:
|
|
emails = get_unforwarded_emails(account, logger)
|
|
if emails:
|
|
forward_emails(account, emails, logger)
|
|
except Exception as e: # pylint: disable=W0718
|
|
logger.error(f"Error processing account {account['email']}: {str(e)}") # pylint: disable=W1203
|
|
|
|
logger.info(datetime.datetime.now().strftime("Check finished at %Y-%m-%d %H:%M:%S"))
|
|
time.sleep(config.get('check_interval', 60))
|
|
|
|
if __name__ == "__main__":
|
|
main()
|