fix(torrent): refresh TTG path-signed download links

- 将 TTG 的 /dl/{id}/{auth} 下载链接识别为短时签名链接，403 后复用既有的
  同资源刷新重试；仅匹配 totheglory.im 及其子域名，其他站点相同形态的路径不受影响。
- 从 TTG 详情页 /t/{id}/ 与下载路径 /dl/{id}/{auth} 提取稳定种子 ID，
  末段 auth 不参与资源身份，刷新时可匹配回同一种子。
- RSS 条目使用 rssdd.php?par= 链接，不受本次路径规则影响。

Refs #7191

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/domain/torrent.py

@@ -7,11 +7,16 @@ import binascii
 import hashlib
 import re
 from typing import TYPE_CHECKING, Optional, Union
-from urllib.parse import parse_qs, urlsplit
+from urllib.parse import SplitResult, parse_qs, urlsplit
 
 if TYPE_CHECKING:
     from app.domain.context import TorrentInfo
 
+# TTG 详情页为 /t/{id}/，下载链接为 /dl/{id}/{auth}；auth 由每次搜索生成，几分钟后或多次请求后失效
+_TTG_HOST = "totheglory.im"
+_TTG_DETAIL_PATH = re.compile(r"/t/(\d+)/?")
+_TTG_DOWNLOAD_PATH = re.compile(r"/dl/(\d+)/[^/]+/?")
+
 
 def is_magnet_link(content: Union[str, bytes]) -> bool:
     """
@@ -141,24 +146,52 @@ def resource_identity(torrent: "TorrentInfo") -> Optional[tuple[str, str]]:
             if values and len(values) == 1:
                 prefix = "hash" if name == "hash" else "id"
                 return site or parsed.netloc, f"{prefix}={values[0]}"
-        # 馒头详情页把稳定种子 ID 放在路径中，换票请求参数不参与资源身份。
-        match = re.fullmatch(r"/detail/(\d+)/?", parsed.path)
-        if match:
-            return site or parsed.netloc, f"id={match[1]}"
+        resource_id = _path_resource_id(parsed)
+        if resource_id:
+            return site or parsed.netloc, f"id={resource_id}"
     return None
 
 
+def _is_ttg_url(parsed: SplitResult) -> bool:
+    """
+    判断地址是否属于 TTG 站点（含子域名）。
+    """
+    host = parsed.hostname or ""
+    return host == _TTG_HOST or host.endswith(f".{_TTG_HOST}")
+
+
+def _path_resource_id(parsed: SplitResult) -> Optional[str]:
+    """
+    从已知站点的详情页或下载链接路径中提取稳定种子 ID。
+
+    馒头详情页为 /detail/{id}，换票请求参数不参与资源身份；
+    TTG 详情页为 /t/{id}/，下载链接为 /dl/{id}/{auth}，末段 auth 是临时签名，不参与资源身份。
+
+    :param parsed: 已拆分的 http(s) 地址
+    :return: 站内种子 ID；不是已知路径形态时返回 None
+    """
+    match = re.fullmatch(r"/detail/(\d+)/?", parsed.path)
+    if match is None and _is_ttg_url(parsed):
+        match = _TTG_DETAIL_PATH.fullmatch(parsed.path) or _TTG_DOWNLOAD_PATH.fullmatch(parsed.path)
+    return match[1] if match else None
+
+
 def is_expiring_download_url(url: Optional[str]) -> bool:
     """
-    识别已知的时间戳加签名下载链接；不推断签名的具体有效期。
+    识别已知的短时签名下载链接；不推断签名的具体有效期。
+
+    支持查询参数中的时间戳加签名（t、sign），以及 TTG 放在下载路径末段的 auth 签名。
     """
     if not url or not url.startswith(("http://", "https://")):
         return False
     try:
-        params = parse_qs(urlsplit(url).query)
+        parsed = urlsplit(url)
+        params = parse_qs(parsed.query)
     except ValueError:
         return False
-    return bool(params.get("t") and params.get("sign"))
+    if params.get("t") and params.get("sign"):
+        return True
+    return _is_ttg_url(parsed) and _TTG_DOWNLOAD_PATH.fullmatch(parsed.path) is not None
 
 
 def rate_limit_cooldown(message: Optional[str]) -> Optional[int]:

tests/test_torrent_link_refresh.py

@@ -499,3 +499,74 @@ def test_only_known_timestamp_signature_pattern_is_expiring(url, expected):
     签名模式判断不把空参数、普通链接或换票协议误认为时效链接。
     """
     assert torrent_rules.is_expiring_download_url(url) is expected
+
+
+TTG_PAGE_URL = "https://totheglory.im/t/395931/"
+TTG_OLD_URL = "https://totheglory.im/dl/395931/3576"
+TTG_NEW_URL = "https://totheglory.im/dl/395931/8067"
+# TTG RSS 条目的下载链接是 rssdd.php?par=，par 为 base64 编码的 "vvv{id}..."，不使用 /dl/ 路径签名
+TTG_RSS_URL = "https://totheglory.im/rssdd.php?par=dnZ2Mzk1OTMx&ssl=yes"
+
+
+@pytest.mark.parametrize("page_url,enclosure,expected", [
+    (TTG_PAGE_URL, TTG_OLD_URL, ("1", "id=395931")),
+    (None, TTG_OLD_URL, ("1", "id=395931")),
+    ("https://totheglory.im/t/395931", None, ("1", "id=395931")),
+    ("https://www.totheglory.im/t/395931/", None, ("1", "id=395931")),
+    (TTG_PAGE_URL, TTG_RSS_URL, ("1", "id=395931")),
+    (None, TTG_RSS_URL, None),
+    ("https://tracker.example/t/395931/", "https://tracker.example/dl/395931/3576", None),
+    ("https://totheglory.im/browse.php?c=M", "https://totheglory.im/dl/395931/", None),
+    ("https://nottheglory.im/t/395931/", None, None),
+])
+def test_ttg_path_identity_ignores_signed_auth(page_url, enclosure, expected):
+    """
+    TTG 详情页和下载路径中的种子 ID 是稳定身份，下载路径末段的 auth 不参与身份；其他站点不套用该路径规则。
+    """
+    torrent = _torrent(page_url=page_url, enclosure=enclosure)
+    assert torrent_rules.resource_identity(torrent) == expected
+    if expected is not None:
+        renewed = replace(torrent, enclosure=TTG_NEW_URL)
+        assert torrent_rules.resource_identity(renewed) == expected
+
+
+@pytest.mark.parametrize("url,expected", [
+    (TTG_OLD_URL, True),
+    ("https://totheglory.im/dl/395931/3576/", True),
+    ("https://www.totheglory.im/dl/395931/3576", True),
+    ("https://totheglory.im/dl/395931/", False),
+    ("https://totheglory.im/dl/395931/3576/extra", False),
+    ("https://totheglory.im/t/395931/", False),
+    (TTG_RSS_URL, False),
+    ("https://tracker.example/dl/395931/3576", False),
+    ("https://nottheglory.im/dl/395931/3576", False),
+])
+def test_ttg_path_signature_is_expiring(url, expected):
+    """
+    只有 TTG 的 /dl/{id}/{auth} 下载路径按短时签名处理，其他站点相同形态的路径保持普通链接。
+    """
+    assert torrent_rules.is_expiring_download_url(url) is expected
+
+
+def test_ttg_expired_path_signature_refreshes_same_resource(download_chain):
+    """
+    TTG 路径签名下载返回 403 后，重新搜索同一种子 ID 的新 auth 并重试一次。
+    """
+    chain, helper = download_chain
+    torrent = _torrent(page_url=TTG_PAGE_URL, enclosure=TTG_OLD_URL)
+    refreshed = replace(torrent, enclosure=TTG_NEW_URL, site_cookie="session=new")
+    other = replace(torrent, page_url="https://totheglory.im/t/395932/",
+                    enclosure="https://totheglory.im/dl/395932/9429")
+    chain.search_site_torrents.return_value = [other, refreshed]
+    helper.download_torrent.side_effect = [(*FAILED[:4], "下载种子出错，状态码：403"), DOWNLOADED]
+
+    assert chain.download_torrent(torrent) == DOWNLOADED[1:4]
+
+    chain.search_site_torrents.assert_called_once_with(site=SITE, keyword=torrent.title)
+    assert [call.kwargs["url"] for call in helper.download_torrent.call_args_list] == [
+        TTG_OLD_URL, TTG_NEW_URL,
+    ]
+    assert all(call.kwargs["cache_invalid"] is False for call in helper.download_torrent.call_args_list)
+    assert torrent.enclosure == TTG_NEW_URL
+    assert torrent.site_cookie == "session=new"
+    chain.post_message.assert_not_called()