diff --git a/PBS/__init__.py b/PBS/__init__.py new file mode 100644 index 0000000..1292e27 --- /dev/null +++ b/PBS/__init__.py @@ -0,0 +1,337 @@ +from __future__ import annotations +import json +import re +import uuid +from collections.abc import Generator +from http.cookiejar import CookieJar +from typing import Any, Optional, Union +import click +from langcodes import Language +from unshackle.core.credential import Credential +from unshackle.core.manifests import HLS +from unshackle.core.search_result import SearchResult +from unshackle.core.service import Service +from unshackle.core.titles import Episode, Movie, Movies, Series, Title_T, Titles_T +from unshackle.core.tracks import Chapters, Tracks + + +class PBS(Service): + """ + Service code for PBS (https://www.pbs.org) + + Author: n0stal6ic + Authorization: Cookies + Geofence: US + """ + + TITLE_RE = r"^(?:https?://(?:www\.)?pbs\.org/(?Pvideo|show)/)?(?P[a-zA-Z0-9-]+)" + GEOFENCE = ("US",) + + @staticmethod + @click.command(name="PBS", short_help="https://www.pbs.org", help=__doc__) + @click.argument("title", type=str) + @click.option( + "-a", "--all", "all_", + is_flag=True, + default=False, + help="Parse input as slug to download all content.", + ) + @click.pass_context + def cli(ctx, **kwargs): + return PBS(ctx, **kwargs) + + def __init__(self, ctx, title: str, all_: bool = False): + super().__init__(ctx) + self.title = title + self.is_show = all_ + + m = re.match(self.TITLE_RE, title) + if not m: + raise ValueError(f"Could not parse PBS URL or ID: {title!r}.") + + url_type = m.group("type") + self.title_id = m.group("id") + + if url_type == "show": + self.is_show = True + + self.uid: str = str(uuid.uuid4()) + self.passport: str = "no" + self.callsign: Optional[str] = None + self.station_id: Optional[str] = None + + def authenticate( + self, + cookies: Optional[CookieJar] = None, + credential: Optional[Credential] = None, + ) -> None: + super().authenticate(cookies, credential) + if cookies: + uid = next((c.value for c in cookies if c.name == "pbs_uid"), None) + if uid: + self.uid = uid + self.passport = "yes" + self.callsign = next((c.value for c in cookies if c.name == "pbsol.station"), None) + self.station_id = next((c.value for c in cookies if c.name == "pbsol.station_id"), None) + + self.session.headers.update({"User-Agent": self.config["client"]["web"]["user_agent"]}) + + def search(self) -> Generator[SearchResult, None, None]: + return + yield + + def get_titles(self) -> Titles_T: + if self.is_show: + return self._get_show_titles(self.title_id) + return self._get_video_title(self.title_id) + + def get_tracks(self, title: Title_T) -> Tracks: + video_bridge = title.data.get("video_bridge") or self._fetch_video_bridge(title.id) + + if video_bridge.get("availability") != "available": + raise ValueError( + f"Video '{title.id}' is unavailable. (Status: {video_bridge.get('availability')!r}). " + "Passport content requires cookies from a logged-in PBS account." + ) + + encodings = video_bridge.get("encodings", []) + if not encodings: + raise ValueError(f"No streams found for '{title.id}'.") + + m3u8_url = self._resolve_encoding(encodings[0]) + self.log.debug(f"HLS master: {m3u8_url}") + + return HLS.from_url(url=m3u8_url, session=self.session).to_tracks(language=title.language) + + def get_chapters(self, title: Title_T) -> Chapters: + return Chapters() + + def get_widevine_service_certificate(self, **_: Any) -> None: + return None + + def get_widevine_license(self, *, challenge: bytes, title: Title_T, track: Any) -> None: + return None + + def _get_video_title(self, video_slug: str) -> Titles_T: + video_bridge = self._fetch_video_bridge(video_slug) + show_slug = video_bridge.get("program", {}).get("slug") + show_title = video_bridge.get("program", {}).get("title", "Unknown Show") + + episode_data = self._find_episode_in_show(show_slug, video_slug) if show_slug else None + + if episode_data: + parent = episode_data.get("parent", {}) + season_data = parent.get("season", {}) + show_display = season_data.get("show", {}).get("title", show_title) + season_num = int(season_data.get("ordinal") or 0) + ep_num = int(parent.get("ordinal") or 0) + year = self._parse_year(episode_data.get("premiere_date")) + + return Series([ + Episode( + id_=video_slug, + service=self.__class__, + title=show_display, + season=season_num, + number=ep_num, + name=episode_data.get("title", video_slug), + description=episode_data.get("description_short"), + year=year, + language=Language.get("en"), + data={"video_bridge": video_bridge, "episode": episode_data}, + ) + ]) + + self.log.warning("Unable to find episode metadata.") + fallback_name = video_bridge.get("_page_title") or video_slug.replace("-", " ").title() + return Series([ + Episode( + id_=video_slug, + service=self.__class__, + title=show_title, + season=0, + number=0, + name=fallback_name, + language=Language.get("en"), + data={"video_bridge": video_bridge}, + ) + ]) + + def _get_show_titles(self, show_slug: str) -> Titles_T: + self.log.info(f"Fetching season data for {show_slug}.") + seasons = self._fetch_show_seasons(show_slug) + specials = self._fetch_show_specials(show_slug) + show_display = show_slug.replace("-", " ").title() + episodes = [] + + if seasons: + self.log.info(f"Found {len(seasons)} season(s)") + for season_cid, season_ordinal in seasons: + self.log.info(f"Season {season_ordinal}") + for ep in self._fetch_season_episodes(show_slug, season_cid): + parent = ep.get("parent", {}) + season_data = parent.get("season", {}) + show_display = season_data.get("show", {}).get("title") or show_display + season_num = int(season_data.get("ordinal") or season_ordinal) + ep_num = int(parent.get("ordinal") or 0) + year = self._parse_year(ep.get("premiere_date")) + + episodes.append(Episode( + id_=ep["slug"], + service=self.__class__, + title=show_display, + season=season_num, + number=ep_num, + name=ep.get("title", ep["slug"]), + description=ep.get("description_short"), + year=year, + language=Language.get("en"), + data={"episode": ep}, + )) + + if specials: + self.log.info(f"Found {len(specials)} special(s)") + specials.sort(key=lambda x: x.get("premiere_date") or "") + for i, sp in enumerate(specials, start=1): + self.log.info(f"Special {i}") + parent = sp.get("parent", {}) + show_display = parent.get("show", {}).get("title") or show_display + year = self._parse_year(sp.get("premiere_date")) + + episodes.append(Episode( + id_=sp["slug"], + service=self.__class__, + title=show_display, + season=0, + number=i, + name=sp.get("title", sp["slug"]), + description=sp.get("description_short"), + year=year, + language=Language.get("en"), + data={"episode": sp}, + )) + + if not episodes: + raise ValueError(f"No episodes or specials found for {show_slug!r}.") + + return Series(episodes) + + def _fetch_video_bridge(self, video_slug: str) -> dict: + params: dict[str, str] = { + "uid": self.uid, + "userPassportStatus": self.passport, + "autoplay": "true", + "unsafeDisableUpsellHref": "true", + } + if self.callsign: + params["callsign"] = self.callsign + if self.station_id: + params["station_id"] = self.station_id + + r = self.session.get( + self.config["endpoints"]["portalplayer"] + video_slug + "/", + params=params, + ) + r.raise_for_status() + + idx = r.text.find("window.videoBridge = ") + if idx == -1: + raise ValueError( + f"videoBridge not found in portalplayer response for {video_slug!r}.\n" + "Double check your input URL and make sure it is correct." + ) + + json_start = r.text.index("{", idx) + video_bridge, _ = json.JSONDecoder().raw_decode(r.text, json_start) + title_m = re.search(r"\s*Video:\s*(.*?)\s*\|\s*Watch", r.text, re.DOTALL) + if title_m: + video_bridge["_page_title"] = " ".join(title_m.group(1).split()) + + return video_bridge + + def _resolve_encoding(self, encoding_url: str) -> str: + r = self.session.get(encoding_url, params={"format": "jsonp", "callback": "__jp0"}) + r.raise_for_status() + + m = re.search(r"__jp0\((.+)\)\s*$", r.text.strip()) + if not m: + raise ValueError(f"Unable to parse URS JSONP response: {r.text[:200]!r}") + + data = json.loads(m.group(1)) + url = data.get("url") + if not url: + raise ValueError(f"URS redirect returned no URL: {data}") + return url + + def _fetch_show_seasons(self, show_slug: str) -> list[tuple[str, int]]: + r = self.session.get(f"https://www.pbs.org/show/{show_slug}/", timeout=15) + if not r.ok: + self.log.warning(f"Page returned {r.status_code} for '{show_slug}'.") + return [] + seasons = self._parse_seasons_from_html(r.text) + if not seasons: + self.log.warning(f"Unable to find season data for '{show_slug}': {r.status_code}.") + return seasons + + def _parse_seasons_from_html(self, html: str) -> list[tuple[str, int]]: + UUID_PAT = r'[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}' + seasons: list[tuple[str, int]] = [] + seen: set[str] = set() + + for url_m in re.finditer( + r'content\.services\.pbs\.org/v3/pbsorg/screens/shows/[^/]+/seasons/(' + UUID_PAT + r')/', + html, + ): + cid = url_m.group(1) + if cid in seen: + continue + seen.add(cid) + + window = html[max(0, url_m.start() - 800):url_m.start()] + all_ords = re.findall(r'ordinal[\\\"]*\s*:\s*(\d+)', window) + ordinal = int(all_ords[-1]) if all_ords else (len(seasons) + 1) + seasons.append((cid, ordinal)) + + return sorted(seasons, key=lambda x: x[1], reverse=True) + + def _fetch_show_specials(self, show_slug: str) -> list[dict]: + url = self.config["endpoints"]["show_specials"].format(show_slug=show_slug) + r = self.session.get(url) + if not r.ok: + self.log.warning(f"Unable to find specials for '{show_slug}': {r.status_code}.") + return [] + return r.json() + + def _fetch_season_episodes(self, show_slug: str, season_cid: str) -> list[dict]: + url = self.config["endpoints"]["show_episodes"].format( + show_slug=show_slug, + season_cid=season_cid, + ) + r = self.session.get(url) + if not r.ok: + self.log.warning(f"Unable to find episodes for season {season_cid}: {r.status_code}.") + return [] + return r.json() + + def _find_episode_in_show(self, show_slug: str, video_slug: str) -> Optional[dict]: + r = self.session.get(f"https://www.pbs.org/video/{video_slug}/", timeout=15) + seasons = self._parse_seasons_from_html(r.text) if r.ok else [] + if not seasons: + seasons = self._fetch_show_seasons(show_slug) + for season_cid, _ in seasons: + for ep in self._fetch_season_episodes(show_slug, season_cid): + if ep.get("slug") == video_slug: + return ep + for sp in self._fetch_show_specials(show_slug): + if sp.get("slug") == video_slug: + return sp + return None + + @staticmethod + def _parse_year(date_str: Optional[str]) -> Optional[int]: + if not date_str: + return None + try: + return int(date_str[:4]) + except (ValueError, TypeError): + return None \ No newline at end of file diff --git a/PBS/config.yaml b/PBS/config.yaml new file mode 100644 index 0000000..9c2a8b6 --- /dev/null +++ b/PBS/config.yaml @@ -0,0 +1,10 @@ +endpoints: + portalplayer: https://player.pbs.org/portalplayer/ + urs: https://urs.pbs.org/redirect/ + show_content: https://content.services.pbs.org/v3/pbsorg/screens/shows/ + show_episodes: https://www.pbs.org/api/show/{show_slug}/season/{season_cid}/episodes/ + show_specials: https://www.pbs.org/api/show/{show_slug}/specials/ + +client: + web: + user_agent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:149.0) Gecko/20100101 Firefox/149.0" \ No newline at end of file