104 lines
3.6 KiB
Python
104 lines
3.6 KiB
Python
|
import json
|
||
|
|
from urllib import request as urllib_request
|
||
|
|
from urllib.error import HTTPError, URLError
|
||
|
|
from urllib.parse import urlencode
|
||
|
|
from urllib.request import Request
|
||
|
|
|
||
|
|
from wagtail.embeds.exceptions import EmbedException, EmbedNotFoundException
|
||
|
|
|
||
|
|
from .oembed import OEmbedFinder
|
||
|
|
|
||
|
|
|
||
|
|
class AccessDeniedFacebookOEmbedException(EmbedException):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
FACEBOOK_PROVIDERS = [
|
||
|
|
# Videos
|
||
|
|
{
|
||
|
|
"endpoint": "https://graph.facebook.com/v11.0/oembed_video",
|
||
|
|
"urls": [
|
||
|
|
r"^https://(?:www\.)?facebook\.com/.+?/videos/.+$",
|
||
|
|
r"^https://(?:www\.)?facebook\.com/video\.php\?(?:v|id)=.+$",
|
||
|
|
r"^https://fb.watch/.+$",
|
||
|
|
],
|
||
|
|
},
|
||
|
|
# Posts
|
||
|
|
{
|
||
|
|
"endpoint": "https://graph.facebook.com/v11.0/oembed_post",
|
||
|
|
"urls": [
|
||
|
|
r"^https://(?:www\.)?facebook\.com/.+?/(?:posts|activity)/.+$",
|
||
|
|
r"^https://(?:www\.)?facebook\.com/photo\.php\?fbid=.+$",
|
||
|
|
r"^https://(?:www\.)?facebook\.com/(?:photos|questions)/.+$",
|
||
|
|
r"^https://(?:www\.)?facebook\.com/permalink\.php\?story_fbid=.+$",
|
||
|
|
r"^https://(?:www\.)?facebook\.com/media/set/?\?set=.+$",
|
||
|
|
r"^https://(?:www\.)?facebook\.com/notes/.+?/.+?/.+$",
|
||
|
|
# At the moment, not documented on https://developers.facebook.com/docs/plugins/oembed-endpoints
|
||
|
|
# Works for posts with a single photo
|
||
|
|
r"^https://(?:www\.)?facebook\.com/.+?/photos/.+$",
|
||
|
|
],
|
||
|
|
},
|
||
|
|
]
|
||
|
|
|
||
|
|
|
||
|
|
class FacebookOEmbedFinder(OEmbedFinder):
|
||
|
|
"""
|
||
|
|
An embed finder that supports the authenticated Facebook oEmbed Endpoint.
|
||
|
|
https://developers.facebook.com/docs/plugins/oembed
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self, omitscript=False, app_id=None, app_secret=None):
|
||
|
|
# {settings.facebook_APP_ID}|{settings.facebook_APP_SECRET}
|
||
|
|
self.app_id = app_id
|
||
|
|
self.app_secret = app_secret
|
||
|
|
self.omitscript = omitscript
|
||
|
|
|
||
|
|
super().__init__(providers=FACEBOOK_PROVIDERS)
|
||
|
|
|
||
|
|
def find_embed(self, url, max_width=None, max_height=None):
|
||
|
|
# Find provider
|
||
|
|
endpoint = self._get_endpoint(url)
|
||
|
|
if endpoint is None:
|
||
|
|
raise EmbedNotFoundException
|
||
|
|
|
||
|
|
params = {"url": url, "format": "json"}
|
||
|
|
if max_width:
|
||
|
|
params["maxwidth"] = max_width
|
||
|
|
if max_height:
|
||
|
|
params["maxheight"] = max_height
|
||
|
|
if self.omitscript:
|
||
|
|
params["omitscript"] = "true"
|
||
|
|
|
||
|
|
# Configure request
|
||
|
|
request = Request(endpoint + "?" + urlencode(params))
|
||
|
|
request.add_header("Authorization", f"Bearer {self.app_id}|{self.app_secret}")
|
||
|
|
|
||
|
|
# Perform request
|
||
|
|
try:
|
||
|
|
r = urllib_request.urlopen(request)
|
||
|
|
except (HTTPError, URLError) as e:
|
||
|
|
if isinstance(e, HTTPError) and e.code == 404:
|
||
|
|
raise EmbedNotFoundException
|
||
|
|
elif isinstance(e, HTTPError) and e.code in [400, 401, 403]:
|
||
|
|
raise AccessDeniedFacebookOEmbedException
|
||
|
|
else:
|
||
|
|
raise EmbedNotFoundException
|
||
|
|
oembed = json.loads(r.read().decode("utf-8"))
|
||
|
|
|
||
|
|
# Return embed as a dict
|
||
|
|
return {
|
||
|
|
"title": oembed["title"] if "title" in oembed else "",
|
||
|
|
"author_name": oembed["author_name"] if "author_name" in oembed else "",
|
||
|
|
"provider_name": oembed["provider_name"]
|
||
|
|
if "provider_name" in oembed
|
||
|
|
else "Facebook",
|
||
|
|
"type": oembed["type"],
|
||
|
|
"thumbnail_url": oembed.get("thumbnail_url"),
|
||
|
|
"width": oembed.get("width"),
|
||
|
|
"height": oembed.get("height"),
|
||
|
|
"html": oembed.get("html"),
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
embed_finder_class = FacebookOEmbedFinder
|