mirror of
https://github.com/n0stal6ic/unshackle-services.git
synced 2026-07-15 17:40:02 +02:00
337 lines
13 KiB
Python
337 lines
13 KiB
Python
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from __future__ import annotations
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import json
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import re
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import uuid
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from collections.abc import Generator
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from http.cookiejar import CookieJar
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from typing import Any, Optional, Union
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import click
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from langcodes import Language
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from unshackle.core.credential import Credential
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from unshackle.core.manifests import HLS
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from unshackle.core.search_result import SearchResult
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from unshackle.core.service import Service
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from unshackle.core.titles import Episode, Movie, Movies, Series, Title_T, Titles_T
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from unshackle.core.tracks import Chapters, Tracks
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class PBS(Service):
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"""
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Service code for PBS (https://www.pbs.org)
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Author: n0stal6ic
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Authorization: Cookies
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Geofence: US
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"""
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TITLE_RE = r"^(?:https?://(?:www\.)?pbs\.org/(?P<type>video|show)/)?(?P<id>[a-zA-Z0-9-]+)"
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GEOFENCE = ("US",)
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@staticmethod
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@click.command(name="PBS", short_help="https://www.pbs.org", help=__doc__)
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@click.argument("title", type=str)
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@click.option(
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"-a", "--all", "all_",
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is_flag=True,
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default=False,
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help="Parse input as slug to download all content.",
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)
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@click.pass_context
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def cli(ctx, **kwargs):
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return PBS(ctx, **kwargs)
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def __init__(self, ctx, title: str, all_: bool = False):
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super().__init__(ctx)
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self.title = title
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self.is_show = all_
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m = re.match(self.TITLE_RE, title)
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if not m:
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raise ValueError(f"Could not parse PBS URL or ID: {title!r}.")
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url_type = m.group("type")
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self.title_id = m.group("id")
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if url_type == "show":
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self.is_show = True
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self.uid: str = str(uuid.uuid4())
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self.passport: str = "no"
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self.callsign: Optional[str] = None
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self.station_id: Optional[str] = None
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def authenticate(
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self,
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cookies: Optional[CookieJar] = None,
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credential: Optional[Credential] = None,
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) -> None:
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super().authenticate(cookies, credential)
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if cookies:
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uid = next((c.value for c in cookies if c.name == "pbs_uid"), None)
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if uid:
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self.uid = uid
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self.passport = "yes"
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self.callsign = next((c.value for c in cookies if c.name == "pbsol.station"), None)
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self.station_id = next((c.value for c in cookies if c.name == "pbsol.station_id"), None)
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self.session.headers.update({"User-Agent": self.config["client"]["web"]["user_agent"]})
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def search(self) -> Generator[SearchResult, None, None]:
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return
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yield
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def get_titles(self) -> Titles_T:
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if self.is_show:
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return self._get_show_titles(self.title_id)
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return self._get_video_title(self.title_id)
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def get_tracks(self, title: Title_T) -> Tracks:
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video_bridge = title.data.get("video_bridge") or self._fetch_video_bridge(title.id)
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if video_bridge.get("availability") != "available":
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raise ValueError(
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f"Video '{title.id}' is unavailable. (Status: {video_bridge.get('availability')!r}). "
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"Passport content requires cookies from a logged-in PBS account."
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)
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encodings = video_bridge.get("encodings", [])
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if not encodings:
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raise ValueError(f"No streams found for '{title.id}'.")
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m3u8_url = self._resolve_encoding(encodings[0])
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self.log.debug(f"HLS master: {m3u8_url}")
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return HLS.from_url(url=m3u8_url, session=self.session).to_tracks(language=title.language)
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def get_chapters(self, title: Title_T) -> Chapters:
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return Chapters()
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def get_widevine_service_certificate(self, **_: Any) -> None:
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return None
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def get_widevine_license(self, *, challenge: bytes, title: Title_T, track: Any) -> None:
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return None
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def _get_video_title(self, video_slug: str) -> Titles_T:
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video_bridge = self._fetch_video_bridge(video_slug)
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show_slug = video_bridge.get("program", {}).get("slug")
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show_title = video_bridge.get("program", {}).get("title", "Unknown Show")
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episode_data = self._find_episode_in_show(show_slug, video_slug) if show_slug else None
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if episode_data:
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parent = episode_data.get("parent", {})
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season_data = parent.get("season", {})
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show_display = season_data.get("show", {}).get("title", show_title)
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season_num = int(season_data.get("ordinal") or 0)
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ep_num = int(parent.get("ordinal") or 0)
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year = self._parse_year(episode_data.get("premiere_date"))
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return Series([
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Episode(
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id_=video_slug,
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service=self.__class__,
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title=show_display,
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season=season_num,
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number=ep_num,
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name=episode_data.get("title", video_slug),
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description=episode_data.get("description_short"),
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year=year,
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language=Language.get("en"),
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data={"video_bridge": video_bridge, "episode": episode_data},
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)
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])
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self.log.warning("Unable to find episode metadata.")
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fallback_name = video_bridge.get("_page_title") or video_slug.replace("-", " ").title()
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return Series([
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Episode(
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id_=video_slug,
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service=self.__class__,
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title=show_title,
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season=0,
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number=0,
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name=fallback_name,
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language=Language.get("en"),
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data={"video_bridge": video_bridge},
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)
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])
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def _get_show_titles(self, show_slug: str) -> Titles_T:
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self.log.info(f"Fetching season data for {show_slug}.")
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seasons = self._fetch_show_seasons(show_slug)
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specials = self._fetch_show_specials(show_slug)
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show_display = show_slug.replace("-", " ").title()
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episodes = []
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if seasons:
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self.log.info(f"Found {len(seasons)} season(s)")
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for season_cid, season_ordinal in seasons:
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self.log.info(f"Season {season_ordinal}")
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for ep in self._fetch_season_episodes(show_slug, season_cid):
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parent = ep.get("parent", {})
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season_data = parent.get("season", {})
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show_display = season_data.get("show", {}).get("title") or show_display
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season_num = int(season_data.get("ordinal") or season_ordinal)
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ep_num = int(parent.get("ordinal") or 0)
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year = self._parse_year(ep.get("premiere_date"))
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episodes.append(Episode(
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id_=ep["slug"],
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service=self.__class__,
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title=show_display,
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season=season_num,
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number=ep_num,
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name=ep.get("title", ep["slug"]),
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description=ep.get("description_short"),
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year=year,
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language=Language.get("en"),
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data={"episode": ep},
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))
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if specials:
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self.log.info(f"Found {len(specials)} special(s)")
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specials.sort(key=lambda x: x.get("premiere_date") or "")
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for i, sp in enumerate(specials, start=1):
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self.log.info(f"Special {i}")
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parent = sp.get("parent", {})
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show_display = parent.get("show", {}).get("title") or show_display
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year = self._parse_year(sp.get("premiere_date"))
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episodes.append(Episode(
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id_=sp["slug"],
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service=self.__class__,
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title=show_display,
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season=0,
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number=i,
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name=sp.get("title", sp["slug"]),
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description=sp.get("description_short"),
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year=year,
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language=Language.get("en"),
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data={"episode": sp},
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))
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if not episodes:
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raise ValueError(f"No episodes or specials found for {show_slug!r}.")
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return Series(episodes)
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def _fetch_video_bridge(self, video_slug: str) -> dict:
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params: dict[str, str] = {
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"uid": self.uid,
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"userPassportStatus": self.passport,
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"autoplay": "true",
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"unsafeDisableUpsellHref": "true",
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}
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if self.callsign:
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params["callsign"] = self.callsign
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if self.station_id:
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params["station_id"] = self.station_id
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r = self.session.get(
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self.config["endpoints"]["portalplayer"] + video_slug + "/",
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params=params,
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)
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r.raise_for_status()
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idx = r.text.find("window.videoBridge = ")
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if idx == -1:
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raise ValueError(
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f"videoBridge not found in portalplayer response for {video_slug!r}.\n"
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"Double check your input URL and make sure it is correct."
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)
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json_start = r.text.index("{", idx)
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video_bridge, _ = json.JSONDecoder().raw_decode(r.text, json_start)
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title_m = re.search(r"<title>\s*Video:\s*(.*?)\s*\|\s*Watch", r.text, re.DOTALL)
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if title_m:
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video_bridge["_page_title"] = " ".join(title_m.group(1).split())
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return video_bridge
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def _resolve_encoding(self, encoding_url: str) -> str:
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r = self.session.get(encoding_url, params={"format": "jsonp", "callback": "__jp0"})
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r.raise_for_status()
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m = re.search(r"__jp0\((.+)\)\s*$", r.text.strip())
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if not m:
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raise ValueError(f"Unable to parse URS JSONP response: {r.text[:200]!r}")
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data = json.loads(m.group(1))
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url = data.get("url")
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if not url:
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raise ValueError(f"URS redirect returned no URL: {data}")
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return url
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def _fetch_show_seasons(self, show_slug: str) -> list[tuple[str, int]]:
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r = self.session.get(f"https://www.pbs.org/show/{show_slug}/", timeout=15)
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if not r.ok:
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self.log.warning(f"Page returned {r.status_code} for '{show_slug}'.")
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return []
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seasons = self._parse_seasons_from_html(r.text)
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if not seasons:
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self.log.warning(f"Unable to find season data for '{show_slug}': {r.status_code}.")
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return seasons
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def _parse_seasons_from_html(self, html: str) -> list[tuple[str, int]]:
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UUID_PAT = r'[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}'
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seasons: list[tuple[str, int]] = []
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seen: set[str] = set()
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for url_m in re.finditer(
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r'content\.services\.pbs\.org/v3/pbsorg/screens/shows/[^/]+/seasons/(' + UUID_PAT + r')/',
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html,
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):
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cid = url_m.group(1)
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if cid in seen:
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continue
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seen.add(cid)
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window = html[max(0, url_m.start() - 800):url_m.start()]
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all_ords = re.findall(r'ordinal[\\\"]*\s*:\s*(\d+)', window)
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ordinal = int(all_ords[-1]) if all_ords else (len(seasons) + 1)
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seasons.append((cid, ordinal))
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return sorted(seasons, key=lambda x: x[1], reverse=True)
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def _fetch_show_specials(self, show_slug: str) -> list[dict]:
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url = self.config["endpoints"]["show_specials"].format(show_slug=show_slug)
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r = self.session.get(url)
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if not r.ok:
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self.log.warning(f"Unable to find specials for '{show_slug}': {r.status_code}.")
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return []
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return r.json()
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def _fetch_season_episodes(self, show_slug: str, season_cid: str) -> list[dict]:
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url = self.config["endpoints"]["show_episodes"].format(
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show_slug=show_slug,
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season_cid=season_cid,
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)
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r = self.session.get(url)
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if not r.ok:
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self.log.warning(f"Unable to find episodes for season {season_cid}: {r.status_code}.")
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return []
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return r.json()
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def _find_episode_in_show(self, show_slug: str, video_slug: str) -> Optional[dict]:
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r = self.session.get(f"https://www.pbs.org/video/{video_slug}/", timeout=15)
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seasons = self._parse_seasons_from_html(r.text) if r.ok else []
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if not seasons:
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seasons = self._fetch_show_seasons(show_slug)
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for season_cid, _ in seasons:
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for ep in self._fetch_season_episodes(show_slug, season_cid):
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if ep.get("slug") == video_slug:
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return ep
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for sp in self._fetch_show_specials(show_slug):
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if sp.get("slug") == video_slug:
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return sp
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return None
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@staticmethod
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def _parse_year(date_str: Optional[str]) -> Optional[int]:
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if not date_str:
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return None
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try:
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return int(date_str[:4])
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except (ValueError, TypeError):
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return None
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