from __future__ import annotations
import json
import re
import sys
from collections.abc import Generator
from http.cookiejar import CookieJar
from typing import Any, Optional, Union
from urllib.parse import urljoin
import click
from click import Context
from devine.core.constants import AnyTrack
from devine.core.credential import Credential
from devine.core.manifests import DASH, HLS
from devine.core.search_result import SearchResult
from devine.core.service import Service
from devine.core.titles import Episode, Movie, Movies, Series
from devine.core.tracks import Chapter, Chapters, Tracks
from requests import Request
class CBC(Service):
"""
\b
Service code for CBC Gem streaming service (https://gem.cbc.ca/).
\b
Version: 1.0.0
Author: stabbedbybrick
Authorization: Credentials
Robustness:
AES-128: 1080p, DDP5.1
Widevine L3: 720p, DDP5.1
\b
Tips:
- Input can be complete title URL or just the slug:
SHOW: https://gem.cbc.ca/murdoch-mysteries OR murdoch-mysteries
MOVIE: https://gem.cbc.ca/the-babadook OR the-babadook
\b
Notes:
- DRM encrypted titles max out at 720p.
- CCExtrator v0.94 will likely fail to extract subtitles. It's recommended to downgrade to v0.93.
- Some audio tracks contain invalid data, causing warning messages from mkvmerge during muxing
These can be ignored.
"""
GEOFENCE = ("ca",)
ALIASES = ("gem", "cbcgem",)
@staticmethod
@click.command(name="CBC", short_help="https://gem.cbc.ca/", help=__doc__)
@click.argument("title", type=str)
@click.pass_context
def cli(ctx: Context, **kwargs: Any) -> CBC:
return CBC(ctx, **kwargs)
def __init__(self, ctx: Context, title: str):
self.title: str = title
super().__init__(ctx)
self.base_url: str = self.config["endpoints"]["base_url"]
def search(self) -> Generator[SearchResult, None, None]:
params = {
"device": "web",
"pageNumber": "1",
"pageSize": "20",
"term": self.title,
}
response: dict = self._request("GET", "/ott/catalog/v1/gem/search", params=params)
for result in response.get("result", []):
yield SearchResult(
id_="https://gem.cbc.ca/{}".format(result.get("url")),
title=result.get("title"),
description=result.get("synopsis"),
label=result.get("type"),
url="https://gem.cbc.ca/{}".format(result.get("url")),
)
def authenticate(self, cookies: Optional[CookieJar] = None, credential: Optional[Credential] = None) -> None:
super().authenticate(cookies, credential)
if not credential:
raise EnvironmentError("Service requires Credentials for Authentication.")
tokens: Optional[Any] = self.cache.get(f"tokens_{credential.sha1}")
"""
All grant types for future reference:
PASSWORD("password"),
ACCESS_TOKEN("access_token"),
REFRESH_TOKEN("refresh_token"),
CLIENT_CREDENTIALS("client_credentials"),
AUTHORIZATION_CODE("authorization_code"),
CODE("code");
"""
if tokens and not tokens.expired:
# cached
self.log.info(" + Using cached tokens")
auth_token: str = tokens.data["access_token"]
elif tokens and tokens.expired:
# expired, refresh
self.log.info("Refreshing cached tokens...")
auth_url, scopes = self.settings()
params = {
"client_id": self.config["client"]["id"],
"grant_type": "refresh_token",
"refresh_token": tokens.data["refresh_token"],
"scope": scopes,
}
access: dict = self._request("POST", auth_url, params=params)
# Shorten expiration by one hour to account for clock skew
tokens.set(access, expiration=int(access["expires_in"]) - 3600)
auth_token: str = access["access_token"]
else:
# new
self.log.info("Requesting new tokens...")
auth_url, scopes = self.settings()
params = {
"client_id": self.config["client"]["id"],
"grant_type": "password",
"username": credential.username,
"password": credential.password,
"scope": scopes,
}
access: dict = self._request("POST", auth_url, params=params)
# Shorten expiration by one hour to account for clock skew
tokens.set(access, expiration=int(access["expires_in"]) - 3600)
auth_token: str = access["access_token"]
claims_token: str = self.claims_token(auth_token)
self.session.headers.update({"x-claims-token": claims_token})
def get_titles(self) -> Union[Movies, Series]:
title_re: str = r"^(?:https?://(?:www.)?gem.cbc.ca/)?(?P<id>[a-zA-Z0-9_-]+)"
try:
title_id: str = re.match(title_re, self.title).group("id")
except Exception:
raise ValueError("- Could not parse ID from title")
params = {"device": "web"}
data: dict = self._request("GET", "/ott/catalog/v2/gem/show/{}".format(title_id), params=params)
label: str = data.get("contentType", "").lower()
if label in ("film", "movie", "standalone"):
movies: list[Movie] = self._movie(data)
return Movies(movies)
else:
episodes: list[Episode] = self._show(data)
return Series(episodes)
def get_tracks(self, title: Union[Movie, Episode]) -> Tracks:
index: dict = self._request(
"GET", "/media/meta/v1/index.ashx", params={"appCode": "gem", "idMedia": title.id, "output": "jsonObject"}
)
title.data["extra"] = {
"chapters": index["Metas"].get("Chapitres"),
"credits": index["Metas"].get("CreditStartTime"),
}
self.drm: bool = index["Metas"].get("isDrmActive") == "true"
if self.drm:
tech: str = next(tech["name"] for tech in index["availableTechs"] if "widevine" in tech["drm"])
else:
tech: str = next(tech["name"] for tech in index["availableTechs"] if not tech["drm"])
response: dict = self._request(
"GET", self.config["endpoints"]["validation"].format("android", title.id, "smart-tv", tech)
)
manifest = response.get("url")
self.license = next((x["value"] for x in response["params"] if "widevineLicenseUrl" in x["name"]), None)
self.token = next((x["value"] for x in response["params"] if "widevineAuthToken" in x["name"]), None)
stream_type: Union[HLS, DASH] = HLS if tech == "hls" else DASH
tracks: Tracks = stream_type.from_url(manifest, self.session).to_tracks(language=title.language)
if stream_type == DASH:
for track in tracks.audio:
label = track.data["dash"]["adaptation_set"].find("Label")
if label is not None and "descriptive" in label.text.lower():
track.descriptive = True
for track in tracks:
track.language = title.language
return tracks
def get_chapters(self, title: Union[Movie, Episode]) -> Chapters:
extra: dict = title.data["extra"]
chapters = []
if extra.get("chapters"):
chapters = [Chapter(timestamp=x) for x in set(extra["chapters"].split(","))]
if extra.get("credits"):
chapters.append(Chapter(name="Credits", timestamp=float(extra["credits"])))
return Chapters(chapters)
def get_widevine_service_certificate(self, **_: Any) -> str:
return None
def get_widevine_license(
self, *, challenge: bytes, title: Union[Movies, Series], track: AnyTrack
) -> Optional[Union[bytes, str]]:
if not self.license or not self.token:
return None
headers = {"x-dt-auth-token": self.token}
r = self.session.post(self.license, headers=headers, data=challenge)
r.raise_for_status()
return r.content
# Service specific
def _show(self, data: dict) -> list[Episode]:
lineups: list = next((x["lineups"] for x in data["content"] if x.get("title", "").lower() == "episodes"), None)
if not lineups:
self.log.warning("No episodes found for: {}".format(data.get("title")))
return
titles = []
for season in lineups:
for episode in season["items"]:
if episode.get("mediaType", "").lower() == "episode":
parts = episode.get("title", "").split(".", 1)
episode_name = parts[1].strip() if len(parts) > 1 else parts[0].strip()
titles.append(
Episode(
id_=episode["idMedia"],
service=self.__class__,
title=data.get("title"),
season=int(season.get("seasonNumber", 0)),
number=int(episode.get("episodeNumber", 0)),
name=episode_name,
year=episode.get("metadata", {}).get("productionYear"),
language=data["structuredMetadata"].get("inLanguage", "en-CA"),
data=episode,
)
)
return titles
def _movie(self, data: dict) -> list[Movie]:
unwanted: tuple = ("episodes", "trailers", "extras")
lineups: list = next((x["lineups"] for x in data["content"] if x.get("title", "").lower() not in unwanted), None)
if not lineups:
self.log.warning("No movies found for: {}".format(data.get("title")))
return
titles = []
for season in lineups:
for movie in season["items"]:
if movie.get("mediaType", "").lower() == "episode":
parts = movie.get("title", "").split(".", 1)
movie_name = parts[1].strip() if len(parts) > 1 else parts[0].strip()
titles.append(
Movie(
id_=movie.get("idMedia"),
service=self.__class__,
name=movie_name,
year=movie.get("metadata", {}).get("productionYear"),
language=data["structuredMetadata"].get("inLanguage", "en-CA"),
data=movie,
)
)
return titles
def settings(self) -> tuple:
settings = self._request("GET", "/ott/catalog/v1/gem/settings", params={"device": "web"})
auth_url: str = settings["identityManagement"]["ropc"]["url"]
scopes: str = settings["identityManagement"]["ropc"]["scopes"]
return auth_url, scopes
def claims_token(self, token: str) -> str:
headers = {
"Authorization": "Bearer " + token,
}
params = {"device": "web"}
response: dict = self._request(
"GET", "/ott/subscription/v2/gem/Subscriber/profile", headers=headers, params=params
)
return response["claimsToken"]
def _request(self, method: str, api: str, **kwargs: Any) -> Any[dict | str]:
url: str = urljoin(self.base_url, api)
prep: Request = self.session.prepare_request(Request(method, url, **kwargs))
response = self.session.send(prep)
if response.status_code not in (200, 426):
raise ConnectionError(f"{response.status_code} - {response.text}")
try:
data = json.loads(response.content)
error_keys = ["errorMessage", "ErrorMessage", "ErrorCode", "errorCode", "error"]
error_message = next((data.get(key) for key in error_keys if key in data), None)
if error_message:
self.log.error(f"\n - Error: {error_message}\n")
sys.exit(1)
return data
except json.JSONDecodeError:
raise ConnectionError("Request for {} failed: {}".format(response.url, response.text))