bridgy-fed/add_webmention.py

42 wiersze
1.2 KiB
Python

"""HTTP proxy that injects our webmention endpoint.
"""
import logging
import appengine_config
import requests
import webapp2
import common
LINK_HEADER = '<%s/webmention>; rel="webmention"'
class AddWebmentionHandler(webapp2.RequestHandler):
"""Proxies HTTP requests and adds Link header to our webmention endpoint."""
def get(self, url):
if not url.startswith('http://') and not url.startswith('https://'):
self.abort(400, 'URL must start with http:// or https://')
try:
resp = common.requests_get(url)
except requests.exceptions.Timeout as e:
logging.info('Returning 504 due to', exc_info=True)
self.abort(504, unicode(e))
except requests.exceptions.RequestException as e:
logging.info('Returning 502 due to', exc_info=True)
self.abort(502, unicode(e))
self.response.status_int = resp.status_code
self.response.write(resp.content)
self.response.headers.clear()
self.response.headers.update(resp.headers)
self.response.headers.add('Link', LINK_HEADER % self.request.host_url)
app = webapp2.WSGIApplication([
('/wm/(.+)', AddWebmentionHandler),
], debug=appengine_config.DEBUG)