fix: avoid reading six-digit email domains as OTPs

src/services/base.py

@@ -5,10 +5,11 @@
 
 import abc
 import logging
+import re
 from typing import Optional, Dict, Any, List
 from enum import Enum
 
-from ..config.constants import EmailServiceType
+from ..config.constants import EmailServiceType, OTP_CODE_PATTERN, OTP_CODE_SEMANTIC_PATTERN
 
 
 logger = logging.getLogger(__name__)
@@ -46,6 +47,8 @@ class BaseEmailService(abc.ABC):
         self._status = EmailServiceStatus.HEALTHY
         self._last_error = None
 
+    _EMAIL_ADDRESS_PATTERN = re.compile(r"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}")
+
     @property
     def status(self) -> EmailServiceStatus:
         """获取服务状态"""
@@ -163,6 +166,30 @@ class BaseEmailService(abc.ABC):
                 return email_info
         return None
 
+    def _strip_email_addresses(self, text: str) -> str:
+        """移除文本中的邮箱地址，避免域名数字被误识别为验证码。"""
+        return self._EMAIL_ADDRESS_PATTERN.sub(" ", text or "")
+
+    def _extract_otp_from_text(self, text: str, pattern: Optional[str] = None) -> Optional[str]:
+        """
+        从文本中提取验证码。
+
+        优先语义匹配，再在移除邮箱地址后的文本上做 6 位数字兜底。
+        """
+        if not text:
+            return None
+
+        semantic_match = re.search(OTP_CODE_SEMANTIC_PATTERN, text, re.IGNORECASE)
+        if semantic_match:
+            return semantic_match.group(1)
+
+        fallback_pattern = pattern or OTP_CODE_PATTERN
+        simple_match = re.search(fallback_pattern, self._strip_email_addresses(text))
+        if simple_match:
+            return simple_match.group(1)
+
+        return None
+
     def wait_for_email(
         self,
         email: str,
@@ -383,4 +410,4 @@ def create_email_service(
     Returns:
         邮箱服务实例
     """
-    return EmailServiceFactory.create(service_type, config, name)
+    return EmailServiceFactory.create(service_type, config, name)

src/services/freemail.py

@@ -226,34 +226,31 @@ class FreemailService(BaseEmailService):
                     if "openai" not in content.lower():
                         continue
 
-                    # 尝试直接使用 Freemail 提取的验证码
-                    v_code = mail.get("verification_code")
-                    if v_code:
-                        logger.info(f"从 Freemail 邮箱 {email} 找到验证码: {v_code}")
-                        self.update_status(True)
-                        return v_code
-
-                    # 如果没有直接提供，通过正则匹配 preview
-                    match = re.search(pattern, content)
-                    if match:
-                        code = match.group(1)
+                    code = self._extract_otp_from_text(content, pattern)
+                    if code:
                         logger.info(f"从 Freemail 邮箱 {email} 找到验证码: {code}")
                         self.update_status(True)
                         return code
 
+                    v_code = str(mail.get("verification_code") or "").strip()
+
                     # 如果依然未找到，获取邮件详情进行匹配
                     try:
                         detail = self._make_request("GET", f"/api/email/{mail_id}")
                         full_content = str(detail.get("content", "")) + "\n" + str(detail.get("html_content", ""))
-                        match = re.search(pattern, full_content)
-                        if match:
-                            code = match.group(1)
+                        code = self._extract_otp_from_text(full_content, pattern)
+                        if code:
                             logger.info(f"从 Freemail 邮箱 {email} 找到验证码: {code}")
                             self.update_status(True)
                             return code
                     except Exception as e:
                         logger.debug(f"获取 Freemail 邮件详情失败: {e}")
 
+                    if re.fullmatch(r"\d{6}", v_code):
+                        logger.info(f"从 Freemail 邮箱 {email} 找到验证码: {v_code}")
+                        self.update_status(True)
+                        return v_code
+
             except Exception as e:
                 logger.debug(f"检查 Freemail 邮件时出错: {e}")
 

src/services/temp_mail.py

@@ -342,9 +342,8 @@ class TempMailService(BaseEmailService):
                     if "openai" not in sender and "openai" not in content.lower():
                         continue
 
-                    match = re.search(pattern, content)
-                    if match:
-                        code = match.group(1)
+                    code = self._extract_otp_from_text(content, pattern)
+                    if code:
                         logger.info(f"从 TempMail 邮箱 {email} 找到验证码: {code}")
                         self.update_status(True)
                         return code

tests/test_cloudflare_worker_mail_services.py

@@ -0,0 +1,99 @@
+from src.services.freemail import FreemailService
+from src.services.temp_mail import TempMailService
+
+
+class FakeResponse:
+    def __init__(self, status_code=200, payload=None, text=""):
+        self.status_code = status_code
+        self._payload = payload
+        self.text = text
+        self.headers = {}
+
+    def json(self):
+        if self._payload is None:
+            raise ValueError("no json payload")
+        return self._payload
+
+
+class FakeHTTPClient:
+    def __init__(self, responses):
+        self.responses = list(responses)
+        self.calls = []
+
+    def request(self, method, url, **kwargs):
+        self.calls.append({
+            "method": method,
+            "url": url,
+            "kwargs": kwargs,
+        })
+        if not self.responses:
+            raise AssertionError(f"未准备响应: {method} {url}")
+        return self.responses.pop(0)
+
+
+def test_temp_mail_ignores_six_digit_domain_when_extracting_code():
+    service = TempMailService({
+        "base_url": "https://mail.example.com",
+        "admin_password": "admin-secret",
+        "domain": "123456.com",
+    })
+    service.http_client = FakeHTTPClient([
+        FakeResponse(
+            payload={
+                "results": [
+                    {
+                        "id": "msg-1",
+                        "source": "OpenAI <noreply@openai.com>",
+                        "subject": "Your OpenAI verification code",
+                        "body": (
+                            "Email sent to tester@123456.com.\n"
+                            "Your OpenAI verification code is 654321"
+                        ),
+                    }
+                ]
+            }
+        )
+    ])
+
+    code = service.get_verification_code(
+        email="tester@123456.com",
+        timeout=1,
+    )
+
+    assert code == "654321"
+
+
+def test_freemail_prefers_real_code_over_worker_extracted_domain_digits():
+    service = FreemailService({
+        "base_url": "https://mail.example.com",
+        "admin_token": "jwt-token",
+    })
+    service.http_client = FakeHTTPClient([
+        FakeResponse(
+            payload=[
+                {
+                    "id": "msg-1",
+                    "sender": "noreply@openai.com",
+                    "subject": "Your OpenAI verification code",
+                    "preview": "Verification email sent to tester@123456.com",
+                    "verification_code": "123456",
+                }
+            ]
+        ),
+        FakeResponse(
+            payload={
+                "content": (
+                    "To: tester@123456.com\n"
+                    "Your OpenAI verification code is 654321"
+                ),
+                "html_content": "",
+            }
+        ),
+    ])
+
+    code = service.get_verification_code(
+        email="tester@123456.com",
+        timeout=1,
+    )
+
+    assert code == "654321"