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101 lines
4.9 KiB
101 lines
4.9 KiB
#!/usr/bin/env python3
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import flask, os, json
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# import functions
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""" A basic ActivityPub server written in Flask, that listens to follow requests.
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Based on this tutorial: https://blog.joinmastodon.org/2018/06/how-to-implement-a-basic-activitypub-server/ """
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"""
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AP
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ActivityPub
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AlternativeProtocol
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A...P...
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"""
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# Config
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DOMAIN = 'https://ap.virtualprivateserver.space'
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# domain = 'http://localhost:5000' # for local testing only, ActivityPub doesn't allow the usage of http:// (it only accepts https://)
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def publicKey():
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if not os.path.exists('./public.pem'):
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os.system('openssl genrsa -out private.pem 2048')
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os.system('openssl rsa -in private.pem -outform PEM -pubout -out public.pem')
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else:
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publicKey = open('./public.pem', 'r').read()
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PUBLICKEY = publicKey.replace('\n', '\\n') # JSON-LD doesn't want to work with linebreaks,
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# but needs the \n character to know where to break the line ;)
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return PUBLICKEY
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INBOX = []
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# Create the application.
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APP = flask.Flask(__name__)
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@APP.route('/', methods=['GET'])
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def index():
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""" Displays the index page accessible at '/' """
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content = f'This ActivityPub Server is running !!! (exciting): ({ DOMAIN })'
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return content
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@APP.route('/.well-known/webfinger', methods=['GET'])
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def webfinger():
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""" When you try to search for an account in eg. Mastodon,
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this object is return, with a link pointing to a place
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where more information about this user can be found. """
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""" What is Webfinger? It is what allows us to ask a website,
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“Do you have a user with this username?” and receive resource
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links in response, with more information about this user. """
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if flask.request.args.get('resource'):
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query = flask.request.args.get('resource') # acct:alice@tada.club
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actor = query.split(':')[1].split('@')[0] # alice
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json = flask.render_template('webfinger.json', query=query, actor=actor, domain=DOMAIN)
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resp = flask.Response(json, status=200, mimetype='application/json')
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return resp
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else:
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return 'no query'
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@APP.route('/users/<actor>', methods=['GET'])
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def return_actor(actor):
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""" This returns the actor.json object when somebody in the
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Fediverse searches for this user. It returns the paths of
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this user's inbox, its preferred username and the user's public key.
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And also a profile icon (image) now! :) """
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preferredUsername = actor # but could become a custom username, set by the user, stored in the database
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# this preferredUsername doesn't show up yet in Mastodon ...
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json = flask.render_template('actor.json', actor=actor, preferredUsername=preferredUsername, publicKey=publicKey(), domain=DOMAIN) # actor = alice
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resp = flask.Response(json, status=200, mimetype='application/json')
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return resp
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@APP.route('/inspect')
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def inspect():
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return flask.Response(b'<br><br>'.join(INBOX), status=200)
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@APP.route('/users/<actor>/inbox', methods=['GET', 'POST'])
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def inbox(actor):
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""" To post to this inbox, you could use curl:
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$ curl -d '{"key" : "value"}' -H "Content-Type: application/json" -X POST http://localhost:5001/users/test/inbox
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Or, with an actual Mastodon follow request:
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$ curl -d '{"@context":["https://www.w3.org/ns/activitystreams","https://w3id.org/security/v1",{"manuallyApprovesFollowers":"as:manuallyApprovesFollowers","sensitive":"as:sensitive","movedTo":{"@id":"as:movedTo","@type":"@id"},"Hashtag":"as:Hashtag","ostatus":"http://ostatus.org#","atomUri":"ostatus:atomUri","inReplyToAtomUri":"ostatus:inReplyToAtomUri","conversation":"ostatus:conversation","toot":"http://joinmastodon.org/ns#","Emoji":"toot:Emoji","focalPoint":{"@container":"@list","@id":"toot:focalPoint"},"featured":{"@id":"toot:featured","@type":"@id"},"schema":"http://schema.org#","PropertyValue":"schema:PropertyValue","value":"schema:value"}],"id":"https://post.lurk.org/02d04ed5-dda6-48f3-a551-2e9c554de745","type":"Follow","actor":"https://post.lurk.org/users/manetta","object":"https://ap.virtualprivateserver.space/users/test","signature":{"type":"RsaSignature2017","creator":"https://post.lurk.org/users/manetta#main-key","created":"2018-11-28T16:15:35Z","signatureValue":"XUdBg+Zj9pkdOXlAYHhOtZlmU1Jdt63zwh2cXoJ8E8C1C+KvgGilkyfPTud9VNymVwdUQRl+YEW9KAZiiGaHb9H+tdVUr9BEkuR5E/tGehbMZr1sakC+qPehe4s3bRKEpJjTTJnTiSHaW7V6Qvr1u6+MVts6oj32az/ixuB/CfodSr3K/K+jZmmOl6SIUqX7Xg7xGwOxIsYaR7g9wbcJ4qyzKcTPZonPMsONq9/RSm3SeQBo7WO1FKlQiFxVP/y5eFaFP8GYDLZyK7Nj5kDL5TannfEpuF8f3oyTBErQhcFQYKcBZNbuaqX/WiIaGjtHIL2ctJe0Psb5Nfshx4MXmQ=="}}' -H "Content-Type: application/json" -X POST http://localhost:5001/users/test/inbox
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"""
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if flask.request.method == 'GET':
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return f'''This has been a <em>{ flask.request.method }</em> request. <br>
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It came with the following header: <br><br><em>{ flask.request.headers }</em><br><br>
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You have searched for the actor <em>{ actor }</em>. <br>
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This is <em>{ DOMAIN }</em>'s shared inbox: <br><br><em>{ str(INBOX) }</em>'''
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if flask.request.method == 'POST':
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INBOX.append(flask.request.data)
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return flask.Response(status=200)
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if __name__ == '__main__':
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APP.debug=True
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APP.run(port=5001)
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