Keep hianime alive across server rotation: try every listed server

hianime's HD-1 slot rotated to a megaplay chain whose CDN (norami.top)
is Cloudflare-blocked for us, which killed stream resolution (CDN probe
sat at 0 KB/s). The ZokoAnime server still serves the working
zokoanime chain. _master_m3u8 now walks every listed server of the
wanted type; _embed_payload handles both chains (window.__P blob and
megaplay data-id/getSourcesNew with re-roll). stream_meta returns {}
when the host is ours but no referer is needed, so the /stream
allowlist still holds.

server/providers/hianime.py

@@ -72,9 +72,9 @@ def _servers(ep_id):
 def _languages(ep_id):
     t = _servers(ep_id)
     out = []
-    if re.search(r'data-type="sub"[\s\S]*?data-server-name="HD-1"', t):
+    if 'data-type="sub"' in t:
         out.append({"code": "jpn", "name": "Sub", "embed_url": "sub"})
-    if re.search(r'data-type="dub"[\s\S]*?data-server-name="HD-1"', t):
+    if 'data-type="dub"' in t:
         out.append({"code": "eng", "name": "Dub", "embed_url": "dub"})
     return out
 
@@ -84,39 +84,76 @@ def _deobfuscate(blob):
     return json.loads(bytes(b ^ KEY[i % len(KEY)] for i, b in enumerate(raw)))
 
 
+def _embed_payload(embed):
+    """embed url -> (master_m3u8, [{label, src} subs], referer_or_None).
+
+    Two player chains have appeared: zokoanime (window.__P blob,
+    base64+XOR) and megaplay (page needs the hianime referer; data-id ->
+    getSourcesNew; CDN domains rotate and most 403 us, so re-roll until
+    one serves)."""
+    page = _get(embed, timeout=15).text
+    blob = re.search(r'window\.__P="([^"]+)"', page)
+    if blob:
+        j = _deobfuscate(blob.group(1))
+        subs = [{"label": (x or {}).get("label", ""), "src": (x or {}).get("src")}
+                for x in j.get("subtitles") or []]
+        return j.get("src"), subs, re.match(r'https?://[^/]+', embed).group(0) + "/"
+    # megaplay: without the hianime referer the page is an error stub with no data-id
+    if not re.search(r'data-id="\d+"', page):
+        page = _get(embed, headers={"Referer": BASE + "/"}, timeout=15).text
+    mid = re.search(r'data-id="(\d+)"', page)
+    if not mid:
+        return None, [], None
+    host = re.match(r'https?://([^/]+)', embed).group(1)
+    for _ in range(5):
+        d = _get(f"https://{host}/stream/getSourcesNew?id={mid.group(1)}",
+                 headers={"Referer": embed, "X-Requested-With": "XMLHttpRequest"},
+                 timeout=15).json()
+        src = (d.get("sources") or {}).get("file")
+        if not src:
+            continue
+        subs = [{"label": (x or {}).get("label", ""), "src": (x or {}).get("file")}
+                for x in d.get("tracks") or []]
+        for cand, refr in (({"Referer": embed}, embed), ({}, None)):
+            try:
+                _get(src, headers=cand, timeout=10)
+                return src, subs, refr
+            except Exception:
+                continue
+    return None, [], None
+
+
 def _master_m3u8(ep_id, lang="eng"):
     global REFERER, STREAM_HOSTS
     t = _servers(ep_id)
     want = "sub" if lang in ("jpn", "sub") else "dub"
+    # HD-1 has rotated between player chains (zokoanime blob, megaplay);
+    # try every listed server of the wanted type until one resolves
     for typ in (want, "sub") if want == "dub" else (want,):
-        m = re.search(rf'data-type="{typ}"[\s\S]*?data-server-name="HD-1"'
-                      r'[\s\S]*?data-hash="([^"]+)"', t)
-        if not m:
-            continue
-        embed = base64.b64decode(m.group(1)).decode()
-        REFERER = re.match(r'https?://[^/]+', embed).group(0) + "/"
-        j = _deobfuscate(re.search(r'window\.__P="([^"]+)"',
-                                   _get(embed, timeout=15).text).group(1))
-        master = j.get("src")
-        if not master:
-            continue
-        # prove the CDN serves us (it 403s without the referer) and register
-        # the hosts so the /stream proxy allowlist survives CDN rotation
-        r = _get(master, headers={"Referer": REFERER}, timeout=10)
-        hosts = {urlparse(master).netloc}
-        for line in r.text.splitlines():
-            if line and not line.startswith("#"):
-                hosts.add(urlparse(urljoin(master, line)).netloc)
-        STREAM_HOSTS |= hosts
-        subs = j.get("subtitles") or []
-        # the 'lang' field is useless (everything says 'en'); the real language
-        # is the label — and it isn't first (Chainsaw Man E1 leads with Arabic)
-        pick = next((x for x in subs if (x or {}).get("label", "").lower() == "english"), None)
-        if not pick and subs:
-            pick = subs[0]
-        if pick and pick.get("src"):
-            SUBS[ep_id] = pick["src"]
-        return master
+        for _name, h in re.findall(
+                rf'data-type="{typ}"[\s\S]*?data-server-name="([^"]+)"'
+                rf'[\s\S]*?data-hash="([^"]+)"', t):
+            embed = base64.b64decode(h).decode()
+            master, subs, refr = _embed_payload(embed)
+            if not master:
+                continue
+            REFERER = refr
+            # prove the CDN serves us and register the hosts so the /stream proxy
+            # allowlist survives CDN rotation
+            r = _get(master, headers={"Referer": refr} if refr else {}, timeout=10)
+            hosts = {urlparse(master).netloc}
+            for line in r.text.splitlines():
+                if line and not line.startswith("#"):
+                    hosts.add(urlparse(urljoin(master, line)).netloc)
+            STREAM_HOSTS |= hosts
+            # the 'lang' field is useless (everything says 'en'); the real language
+            # is the label — and it isn't first (Chainsaw Man E1 leads with Arabic)
+            pick = next((x for x in subs if (x or {}).get("label", "").lower() == "english"), None)
+            if not pick and subs:
+                pick = subs[0]
+            if pick and pick.get("src"):
+                SUBS[ep_id] = pick["src"]
+            return master
     return None
 
 
@@ -129,9 +166,11 @@ master_m3u8 = lambda e, l="eng": _cached(f"hianime:master:{e}:{l}", 3600, _maste
 
 
 def stream_meta(url):
-    """{Referer} for our own playlist/segment hosts, else None."""
-    if REFERER and urlparse(url).netloc in STREAM_HOSTS:
-        return {"Referer": REFERER}
+    """{Referer} (or {}) for our own playlist/segment hosts, else None —
+    non-None doubles as the /stream allowlist; {} = host is ours but the
+    CDN needs no referer."""
+    if urlparse(url).netloc in STREAM_HOSTS:
+        return {"Referer": REFERER} if REFERER else {}
     return None