184 lines
8.5 KiB
Python
184 lines
8.5 KiB
Python
import json
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import imaplib
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import smtplib
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import email
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from email.mime.multipart import MIMEMultipart
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from email.mime.text import MIMEText
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from email.utils import parseaddr
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import time
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import datetime
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import logging
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import socks
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import socket
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import re
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from email.header import decode_header
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def provider_in(address, provider_list):
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for provider in provider_list:
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if address.endswith(provider):
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return True
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return False
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def decode_mime_words(s):
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decoded_fragments = decode_header(s)
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return ''.join(
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str(fragment, encoding or 'utf-8') if isinstance(fragment, bytes) else fragment
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for fragment, encoding in decoded_fragments
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)
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def add_mask(original_msg, content, is_html):
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original_subject = decode_mime_words(original_msg['Subject'])
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from_name, from_address = parseaddr(original_msg['From'])
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from_name = decode_mime_words(from_name)
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to_name, to_address = parseaddr(original_msg['To'])
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to_name = decode_mime_words(to_name)
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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%">"""
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footer = f"""</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>"""
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return header + content + footer
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def load_config(config_file='config.json'):
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with open(config_file, 'r') as file:
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config = json.load(file)
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return config
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def set_proxy(proxy_config):
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socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5, proxy_config['server'], proxy_config['port'])
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socket.socket = socks.socksocket
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def setup_logging(filename):
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logger = logging.getLogger()
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logger.setLevel('DEBUG')
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BASIC_FORMAT = "%(asctime)s >> %(levelname)s - %(message)s"
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DATE_FORMAT = '%Y-%m-%d %H:%M:%S'
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formatter = logging.Formatter(BASIC_FORMAT, DATE_FORMAT)
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chlr = logging.StreamHandler()
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chlr.setFormatter(formatter)
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chlr.setLevel('INFO')
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fhlr = logging.FileHandler(filename, encoding='utf-8')
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fhlr.setFormatter(formatter)
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logger.addHandler(chlr)
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logger.addHandler(fhlr)
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return logger
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def get_unforwarded_emails(account_config, logger):
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if account_config['proxy']['enabled']:
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set_proxy(account_config['proxy'])
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if account_config['imap'].get('use_ssl', True):
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imap = imaplib.IMAP4_SSL(account_config['imap']['server'], account_config['imap']['port'])
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else:
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imap = imaplib.IMAP4(account_config['imap']['server'], account_config['imap']['port'])
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imap.login(account_config['email'], account_config['password'])
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if provider_in(account_config['email'], ["163.com", "126.com"]):
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imaplib.Commands['ID'] = ('AUTH')
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args = ("name","XXXX","contact","XXXX@163.com","version","1.0.0","vendor","myclient")
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typ, dat = imap._simple_command('ID', '("' + '" "'.join(args) + '")')
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imap.select()
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status, messages = imap.search(None, 'UNSEEN')
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email_ids = messages[0].split()
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emails = []
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for email_id in email_ids:
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status, data = imap.fetch(email_id, '(RFC822)')
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for response_part in data:
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if isinstance(response_part, tuple):
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msg = email.message_from_bytes(response_part[1])
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emails.append((email_id, msg))
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imap.store(email_id, '+FLAGS', '\Seen')
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imap.logout()
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if len(emails) > 0:
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logger.info(f"Retrieved {len(emails)} new emails from {account_config['email']}")
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return emails
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def forward_emails(account_config, emails, logger):
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if account_config['proxy']['enabled']:
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set_proxy(account_config['proxy'])
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smtp = None
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if account_config['smtp'].get('use_ssl', False):
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smtp = smtplib.SMTP_SSL(account_config['smtp']['server'], account_config['smtp']['port'])
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else:
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smtp = smtplib.SMTP(account_config['smtp']['server'], account_config['smtp']['port'])
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if account_config['smtp'].get('use_starttls', False):
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smtp.starttls()
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smtp.login(account_config['email'], account_config['password'])
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for email_id, original_msg in emails:
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for recipient in account_config['forward']['to']:
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from_name, from_address = parseaddr(original_msg['From'])
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from_name = decode_mime_words(from_name)
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to_name, to_address = parseaddr(original_msg['To'])
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to_name = decode_mime_words(to_name)
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msg = MIMEMultipart('mixed')
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msg['From'] = f'"{from_name} ({from_address}) via Forwarder" <{account_config["email"]}>'
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msg['To'] = f'"{to_name} ({to_address}) via Forwarder" <{recipient}>'
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original_subject = decode_mime_words(original_msg['Subject'])
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msg['Subject'] = original_subject
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body = ""
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attachments = []
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if original_msg.is_multipart():
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for part in original_msg.walk():
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content_type = part.get_content_type()
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content_disposition = str(part.get("Content-Disposition"))
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if "attachment" in content_disposition or part.get_filename():
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attachments.append(part)
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elif content_type == 'text/html':
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body = part.get_payload(decode=True).decode()
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elif content_type == 'text/plain' and not body:
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body = part.get_payload(decode=True).decode()
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else:
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body = original_msg.get_payload(decode=True).decode()
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if not body:
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logger.error(f"Failed to extract body from email {email_id}")
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continue
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is_html = bool(re.compile(r'<[^>]+>').search(body))
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if not is_html:
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body = body.replace('\n', '<br>')
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html_content = add_mask(original_msg, body, is_html)
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msg.attach(MIMEText(html_content, 'html'))
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for attachment in attachments:
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filename = attachment.get_filename()
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if decode_header(filename):
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filename = decode_mime_words(filename)
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attachment.add_header('Content-Disposition', 'attachment', filename=filename)
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msg.attach(attachment)
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smtp.sendmail(account_config['email'], recipient, msg.as_string())
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logger.info(f"Forwarded email {original_subject} from {account_config['email']} to {recipient}")
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smtp.quit()
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def main():
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config = load_config()
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logger = setup_logging(config['log'])
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while True:
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for account in config['accounts']:
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if account['enabled']:
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try:
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emails = get_unforwarded_emails(account, logger)
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if emails:
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forward_emails(account, emails, logger)
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except Exception as e:
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logger.error(f"Error processing account {account['email']}: {str(e)}")
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logger.info(datetime.datetime.now().strftime("Check finished at %Y-%m-%d %H:%M:%S"))
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time.sleep(config.get('check_interval', 60))
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if __name__ == "__main__":
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main()
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