彻底优化项目结构,使用 web
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"""邮箱验证模块 - IMAP获取验证码"""
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import imaplib
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import email
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import html
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import re
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import time
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from datetime import datetime, timedelta
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from email.header import decode_header
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from email.utils import parsedate_to_datetime
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from typing import Optional
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from loguru import logger
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class EmailVerifier:
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"""邮箱验证器"""
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def __init__(
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self,
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imap_server: str,
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imap_port: int,
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username: str,
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password: str,
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timeout: float = 12,
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mailbox: str = "INBOX",
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lookback_minutes: int = 10,
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max_messages: int = 20,
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):
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self.imap_server = imap_server
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self.imap_port = imap_port
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self.username = username
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self.password = password
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self.timeout = timeout
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self.mailbox = mailbox
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self.lookback_minutes = lookback_minutes
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self.max_messages = max_messages
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self._connection: Optional[imaplib.IMAP4_SSL] = None
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def connect(self) -> None:
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"""连接IMAP服务器"""
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try:
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logger.info(f"连接IMAP服务器: {self.imap_server}:{self.imap_port}")
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self._validate_login_text()
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self._connection = imaplib.IMAP4_SSL(
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self.imap_server,
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self.imap_port,
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timeout=self.timeout,
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)
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self._connection.login(self.username, self.password)
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logger.info("IMAP连接成功")
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except Exception as e:
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logger.error(f"IMAP连接失败: {e}")
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raise
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def _validate_login_text(self) -> None:
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"""提前检查IMAP登录字段，给出比ascii编码异常更明确的提示。"""
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for label, value in (("邮箱账号", self.username), ("邮箱密码/授权码", self.password)):
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try:
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value.encode("ascii")
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except UnicodeEncodeError as exc:
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raise ValueError(
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f"{label}包含中文或其他非ASCII字符，IMAP无法登录；"
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"请检查导入格式是否为：用户名|密码|邮箱|邮箱密码"
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) from exc
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def disconnect(self) -> None:
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"""断开IMAP连接"""
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if self._connection:
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try:
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self._connection.logout()
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except:
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pass
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self._connection = None
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def get_verification_code(
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self,
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max_wait: int = 60,
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interval: int = 2,
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after_timestamp: Optional[float] = None,
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allow_old_seconds: int = 15,
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) -> str:
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"""
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获取斗鱼验证码
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Args:
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max_wait: 最大等待时间（秒）
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interval: 轮询间隔（秒）
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after_timestamp: 发起发送验证码请求的时间戳，用于过滤旧邮件
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allow_old_seconds: 邮件服务器时间允许向前偏移的秒数
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Returns:
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6位验证码
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"""
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logger.info(f"等待斗鱼验证码邮件，最大等待 {max_wait} 秒...")
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self.connect()
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try:
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deadline = time.monotonic() + max_wait
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while time.monotonic() < deadline:
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code = self._fetch_latest_code(
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after_timestamp=after_timestamp,
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allow_old_seconds=allow_old_seconds,
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)
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if code:
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logger.success(f"获取到验证码: {code}")
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return code
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logger.debug("未找到验证码，等待中...")
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time.sleep(interval)
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raise TimeoutError("等待验证码超时")
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finally:
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self.disconnect()
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def _fetch_latest_code(
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self,
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after_timestamp: Optional[float] = None,
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allow_old_seconds: int = 15,
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) -> Optional[str]:
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"""从IMAP获取最新验证码"""
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try:
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if not self._connection:
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raise RuntimeError("IMAP未连接")
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status, _ = self._connection.select(self.mailbox, readonly=True)
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if status != 'OK':
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logger.warning(f"选择邮箱目录失败: {self.mailbox}")
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return None
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since = self._build_since_date(after_timestamp, allow_old_seconds)
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# IMAP命令只能稳定发送ASCII条件，中文主题/发件人改到本地解析过滤。
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status, messages = self._connection.search(None, 'SINCE', since)
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if status != 'OK' or not messages[0]:
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return None
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message_ids = messages[0].split()
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recent_ids = list(reversed(message_ids[-self.max_messages:]))
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logger.debug(f"扫描最近 {len(recent_ids)} 封邮件，SINCE {since}")
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for message_id in recent_ids:
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msg = self._fetch_message(message_id)
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if not msg:
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continue
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if not self._is_recent_enough(msg, after_timestamp, allow_old_seconds):
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continue
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subject = self._decode_subject(msg.get('Subject', ''))
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from_addr = msg.get('From', '')
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body = self._get_email_body(msg)
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if not self._is_douyu_email(subject, from_addr, body):
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continue
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code = self._extract_verification_code(body)
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if code:
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logger.info(f"从邮件中提取到验证码，主题: {subject}")
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return code
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return None
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except imaplib.IMAP4.abort as e:
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logger.warning(f"IMAP连接中断，准备下轮重连: {e}")
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self.disconnect()
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self.connect()
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return None
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except Exception as e:
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logger.error(f"获取邮件失败: {e}")
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return None
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def _build_since_date(
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self,
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after_timestamp: Optional[float],
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allow_old_seconds: int,
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) -> str:
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"""构造IMAP SINCE日期，月份固定用英文缩写。"""
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if after_timestamp:
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since_dt = datetime.fromtimestamp(
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max(0, after_timestamp - allow_old_seconds)
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)
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else:
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since_dt = datetime.now() - timedelta(minutes=self.lookback_minutes)
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return self._format_imap_date(since_dt)
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def _format_imap_date(self, value: datetime) -> str:
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"""格式化IMAP日期，避免系统locale影响月份名称。"""
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months = [
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
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]
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return f"{value.day:02d}-{months[value.month - 1]}-{value.year}"
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def _fetch_message(self, message_id: bytes) -> Optional[email.message.Message]:
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"""获取邮件完整内容，使用PEEK避免标记已读。"""
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status, msg_data = self._connection.fetch(message_id, '(BODY.PEEK[])')
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if status != 'OK':
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return None
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raw_message = self._join_fetch_payload(msg_data)
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if not raw_message:
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return None
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return email.message_from_bytes(raw_message)
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def _join_fetch_payload(self, msg_data) -> bytes:
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"""合并IMAP fetch返回中的邮件字节内容。"""
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chunks = []
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for item in msg_data:
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if isinstance(item, tuple) and len(item) >= 2 and isinstance(item[1], bytes):
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chunks.append(item[1])
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elif isinstance(item, bytes) and item.startswith(b'From '):
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chunks.append(item)
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return b''.join(chunks)
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def _is_recent_enough(
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self,
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msg: email.message.Message,
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after_timestamp: Optional[float],
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allow_old_seconds: int,
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) -> bool:
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"""检查邮件时间是否晚于本次发送验证码请求。"""
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if not after_timestamp:
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return True
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message_time = self._parse_message_time(msg)
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if not message_time:
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logger.debug("邮件缺少Date头，保守纳入候选")
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return True
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if message_time.timestamp() < after_timestamp - allow_old_seconds:
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subject = self._decode_subject(msg.get('Subject', ''))
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logger.debug(f"跳过旧邮件: {subject}")
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return False
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return True
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def _parse_message_time(self, msg: email.message.Message) -> Optional[datetime]:
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"""解析邮件Date头。"""
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date_header = msg.get('Date')
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if not date_header:
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return None
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try:
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return parsedate_to_datetime(date_header)
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except (TypeError, ValueError):
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return None
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def _is_douyu_email(self, subject: str, from_addr: str, body: str = "") -> bool:
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"""判断是否是斗鱼的邮件"""
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douyu_keywords = ['斗鱼', 'douyu', 'douyutv']
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verify_keywords = ['验证码', '安全验证', '登录验证', '动态码', '校验码']
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combined = f"{subject}\n{from_addr}\n{body[:500]}".lower()
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return (
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any(keyword in combined for keyword in douyu_keywords)
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or any(keyword in subject for keyword in verify_keywords)
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)
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def _decode_subject(self, subject: str) -> str:
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"""解码邮件主题"""
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if not subject:
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return ""
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decoded_parts = decode_header(subject)
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result = []
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for part, charset in decoded_parts:
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if isinstance(part, bytes):
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result.append(part.decode(charset or 'utf-8', errors='ignore'))
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else:
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result.append(part)
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return ' '.join(result)
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def _get_email_body(self, msg: email.message.Message) -> str:
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"""获取邮件正文"""
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parts = []
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if msg.is_multipart():
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for part in msg.walk():
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content_type = part.get_content_type()
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if part.get_content_disposition() == 'attachment':
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continue
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if content_type == 'text/plain' or content_type == 'text/html':
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decoded = self._decode_part_payload(part)
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if decoded:
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parts.append(decoded)
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else:
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decoded = self._decode_part_payload(msg)
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if decoded:
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parts.append(decoded)
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return "\n".join(parts)
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def _decode_part_payload(self, part: email.message.Message) -> str:
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"""解码邮件片段内容。"""
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try:
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payload = part.get_payload(decode=True)
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if payload is None:
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raw_payload = part.get_payload()
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return raw_payload if isinstance(raw_payload, str) else ""
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charset = part.get_content_charset() or 'utf-8'
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return payload.decode(charset, errors='ignore')
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except Exception:
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return ""
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def _extract_verification_code(self, text: str) -> Optional[str]:
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"""从文本中提取验证码"""
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# 清理HTML标签和实体，方便匹配中文邮件模板。
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text = html.unescape(text)
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text = re.sub(r'<[^>]+>', ' ', text)
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text = re.sub(r'\s+', ' ', text)
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# 查找6位数字验证码
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# 注意：中文冒号和英文冒号需要分别处理
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patterns = [
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r'(?:验证码|校验码|动态码|安全码)\s*(?:是|为|:|：)?\s*(\d{6})',
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r'(?:您的|你的|本次)?(?:验证码|校验码|动态码|安全码)\s*(?:是|为)?\s*(\d{6})',
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r'(\d{6})\s*(?:是|为)?(?:您的|你的|本次)?(?:验证码|校验码|动态码|安全码)',
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r'(?:verification\s+code|security\s+code|code)\s*(?:is|:|：)?\s*(\d{6})',
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r'\b(\d{6})\b', # 候选邮件已经过滤为斗鱼验证码邮件，最后再兜底匹配6位数字。
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]
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for pattern in patterns:
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match = re.search(pattern, text, re.IGNORECASE)
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if match:
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code = match.group(1)
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return code
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return None
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def get_email_config_for_account(email_address: str) -> dict:
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"""根据邮箱地址自动配置IMAP服务器"""
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configs = {
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'bdhg.xyz': {'server': 'mail.bdhg.xyz', 'port': 993},
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'qq.com': {'server': 'imap.qq.com', 'port': 993},
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'163.com': {'server': 'imap.163.com', 'port': 993},
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'126.com': {'server': 'imap.126.com', 'port': 993},
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'gmail.com': {'server': 'imap.gmail.com', 'port': 993},
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'outlook.com': {'server': 'outlook.office365.com', 'port': 993},
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'hotmail.com': {'server': 'outlook.office365.com', 'port': 993},
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}
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domain = email_address.split('@')[-1].lower()
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return configs.get(domain, {'server': f'imap.{domain}', 'port': 993})
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