mirror of
https://github.com/JefferyHcool/BiliNote.git
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f79dc612fb
B 站 wbi/playurl 网关新增 dm_img_list/dm_img_str/dm_cover_img_str/ dm_img_inter + web_location 风控校验,缺失即返回 HTTP 412。对于网页不内嵌 playinfo、必须走 API 的视频(如 BV1X9L16oEgB),yt-dlp(含最新版)尚未适配, 导致下载失败,且刷新 cookie 无效。 通过猴补丁在 BilibiliBaseIE._download_playinfo 的 wbi 签名前注入哑值 dm_img 参数(取值形态对齐 yt-dlp 自身在 arc/search 端点的用法),即可恢复 200。 已验证补丁对固定版 2025.03.31 与最新 2026.06.09 签名一致、向前兼容;新增 4 个单元测试。 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
95 lines
3.5 KiB
Python
95 lines
3.5 KiB
Python
"""
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TDD coverage for the Bilibili wbi/playurl dm_img risk-control patch.
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Background: around 2026-06, Bilibili's `x/player/wbi/playurl` gateway began
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rejecting requests that omit the browser fingerprint params
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(dm_img_list / dm_img_str / dm_cover_img_str / dm_img_inter + web_location)
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with HTTP 412. yt-dlp (incl. latest) does not yet send these for playurl, so
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videos whose web page does not inline playinfo (forcing the API call) fail.
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These tests verify our yt-dlp monkey-patch injects those params *before* wbi
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signing, and that caller-supplied query params still win.
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"""
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import importlib.util
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import pathlib
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import unittest
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ROOT = pathlib.Path(__file__).resolve().parents[1]
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MODULE_PATH = ROOT / "app" / "downloaders" / "bilibili_dm_patch.py"
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spec = importlib.util.spec_from_file_location("bilibili_dm_patch", MODULE_PATH)
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if spec is None or spec.loader is None:
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raise ImportError("bilibili_dm_patch module spec not found")
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bilibili_dm_patch = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(bilibili_dm_patch)
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REQUIRED_KEYS = {
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"web_location",
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"dm_img_list",
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"dm_img_str",
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"dm_cover_img_str",
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"dm_img_inter",
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}
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class BuildDmImgParamsTest(unittest.TestCase):
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def test_contains_all_required_risk_control_keys(self):
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params = bilibili_dm_patch.build_dm_img_params()
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self.assertTrue(REQUIRED_KEYS.issubset(params.keys()))
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def test_web_location_is_expected_sentinel(self):
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self.assertEqual(bilibili_dm_patch.build_dm_img_params()["web_location"], 1550101)
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class ApplyPatchTest(unittest.TestCase):
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def setUp(self):
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try:
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import yt_dlp.extractor.bilibili # noqa: F401
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except Exception as exc: # pragma: no cover - env without yt-dlp
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self.skipTest(f"yt-dlp not importable: {exc}")
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def test_patch_is_idempotent(self):
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from yt_dlp.extractor.bilibili import BilibiliBaseIE
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self.assertTrue(bilibili_dm_patch.apply_bilibili_dm_img_patch())
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first = BilibiliBaseIE._download_playinfo
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self.assertTrue(bilibili_dm_patch.apply_bilibili_dm_img_patch())
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self.assertIs(BilibiliBaseIE._download_playinfo, first)
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def test_dm_params_reach_wbi_signing_with_caller_query_preserved(self):
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from yt_dlp import YoutubeDL
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from yt_dlp.extractor.bilibili import BilibiliBaseIE
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bilibili_dm_patch.apply_bilibili_dm_img_patch()
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captured = {}
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def fake_sign_wbi(params, video_id):
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# Capture the exact params handed to wbi signing (just before the
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# HTTP request). dm_* must already be present here, pre-signature.
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captured.update(params)
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return params
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def fake_download_json(url, video_id, **kwargs):
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# Avoid any network; the real playurl call would 412 without dm_*.
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return {"data": {"ok": True}}
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ie = BilibiliBaseIE(YoutubeDL({"quiet": True}))
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ie._sign_wbi = fake_sign_wbi
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ie._download_json = fake_download_json
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ie._download_playinfo("BV1X9L16oEgB", 4242, headers={}, query={"qn": 64})
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self.assertTrue(
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REQUIRED_KEYS.issubset(captured.keys()),
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f"missing dm_* keys, got: {sorted(captured)}",
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)
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self.assertEqual(captured["web_location"], 1550101)
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# caller-supplied query must survive the merge
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self.assertEqual(captured["qn"], 64)
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# the original method still builds its base params
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self.assertEqual(captured["bvid"], "BV1X9L16oEgB")
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if __name__ == "__main__":
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unittest.main()
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