2017-10-10 14:42:10 +00:00
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# coding=utf-8
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"""Renders mf2 proxy pages based on stored Responses."""
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2019-04-16 15:02:19 +00:00
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import datetime
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2017-10-10 14:42:10 +00:00
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2021-07-07 15:07:20 +00:00
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from flask import request
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2017-10-15 17:50:01 +00:00
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from granary import as2, atom, microformats2
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2019-12-25 07:26:58 +00:00
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from oauth_dropins.webutil.util import json_loads
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2017-10-10 14:42:10 +00:00
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2021-07-07 15:07:20 +00:00
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from app import app, cache
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2020-01-31 15:38:58 +00:00
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import common
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2017-10-10 14:42:10 +00:00
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from models import Response
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2019-04-16 15:02:19 +00:00
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CACHE_TIME = datetime.timedelta(minutes=15)
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2021-07-07 03:33:48 +00:00
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2021-07-06 03:54:23 +00:00
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@app.route('/render')
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2021-07-06 20:45:56 +00:00
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@cache.cached(timeout=CACHE_TIME.total_seconds(), query_string=True,
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2021-07-07 15:07:20 +00:00
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response_filter=common.not_5xx)
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2021-07-06 03:54:23 +00:00
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def render():
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2021-07-07 15:07:20 +00:00
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"""Fetches a stored Response and renders it as HTML."""
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2021-07-06 20:45:56 +00:00
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source = common.get_required_param(request, 'source')
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target = common.get_required_param(request, 'target')
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2017-10-10 14:42:10 +00:00
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2021-07-06 03:54:23 +00:00
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id = f'{source} {target}'
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2021-07-06 20:45:56 +00:00
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resp = Response.get_by_id(id)
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2021-07-06 03:54:23 +00:00
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if not resp:
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return (f'No stored response for {id}', 404)
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if resp.source_mf2:
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as1 = microformats2.json_to_object(json_loads(resp.source_mf2))
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elif resp.source_as2:
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as1 = as2.to_as1(json_loads(resp.source_as2))
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elif resp.source_atom:
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as1 = atom.atom_to_activity(resp.source_atom)
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else:
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return (f'Stored response for {id} has no data', 404)
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# add HTML meta redirect to source page. should trigger for end users in
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# browsers but not for webmention receivers (hopefully).
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html = microformats2.activities_to_html([as1])
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utf8 = '<meta charset="utf-8">'
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refresh = f'<meta http-equiv="refresh" content="0;url={source}">'
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return html.replace(utf8, utf8 + '\n' + refresh)
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