bridgy-fed/add_webmention.py

37 wiersze
1.1 KiB
Python

"""HTTP proxy that injects our webmention endpoint.
"""
import datetime
import urllib.parse
import flask
from flask import request
from oauth_dropins.webutil import flask_util, util
from oauth_dropins.webutil.flask_util import error
import requests
from app import app, cache
import common
LINK_HEADER = '<%s>; rel="webmention"'
@app.get(r'/wm/<path:url>')
@flask_util.cached(cache, common.CACHE_TIME, http_5xx=True)
def add_wm(url=None):
"""Proxies HTTP requests and adds Link header to our webmention endpoint."""
url = urllib.parse.unquote(url)
if not util.is_web(url):
error('URL must start with http:// or https://')
try:
got = util.requests_get(url)
except requests.exceptions.Timeout as e:
error(str(e), status=504, exc_info=True)
except requests.exceptions.RequestException as e:
error(str(e), status=502, exc_info=True)
resp = flask.make_response(got.content, got.status_code, dict(got.headers))
resp.headers.add('Link', LINK_HEADER % (request.args.get('endpoint') or
common.host_url('webmention')))
return resp