kopia lustrzana https://github.com/dsblank/activitypub
316 wiersze
9.6 KiB
Python
316 wiersze
9.6 KiB
Python
import binascii
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import os
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import uuid
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class Data():
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routes = []
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filters = []
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class DataWrapper():
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"""
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Instance for saving routes, filters, etc. for app.
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>>> @app.filter
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... def upper(item):
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... return item.upper()
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>>> len(app._data.filters) == 1
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True
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>>> app._data.filters[0]("testing")
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'TESTING'
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>>> class Test():
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... @app.route("/test")
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... def route_test(self, *args, **kwargs):
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... print(args, kwargs)
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... return 42
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>>> t = Test()
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>>> len(app._data.routes) == 1
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True
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>>> path, methods, function = app._data.routes[0]
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>>> function(t, 1, 2, 3, hello="world")
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(1, 2, 3) {'hello': 'world'}
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42
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"""
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_data = Data()
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def filter(self, f):
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"""
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Wrap a plain function/method to provide template function.
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"""
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self._data.filters.append(f)
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return f
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def route(self, path, methods=None):
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"""
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Wrap a function/method as a route.
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"""
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def decorator(f):
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self._data.routes.append((path, methods, f))
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return f
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return decorator
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class Routes():
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routes = []
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def __call__(self, path, methods=["GET"]):
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print("call Routes!")
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def decorator(function):
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print("call decorator!")
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Routes.routes.append((path, function))
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print("return")
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return decorator
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class Manager():
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"""
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Manager class that ties together ActivityPub objects, defaults,
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and a database.
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>>> from activitypub.manager import Manager
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>>> from activitypub.database import ListDatabase
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>>> db = ListDatabase()
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>>> manager = Manager(database=db)
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>>>
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"""
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app_name = "activitypub"
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version = "1.0.0"
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key_path = "./keys"
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route = Routes()
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def __init__(self, context=None, defaults=None, database=None):
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from ..classes import ActivityPubBase
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self.callback = lambda box, activity_id: None
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self.context = context
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self.defaults = defaults or self.make_defaults()
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self.defaults["$UUID"] = lambda: str(uuid.uuid4())
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self.database = database
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def make_wrapper(manager, class_):
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def wrapper(*args, **kwargs):
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return ActivityPubBase.CLASSES[class_](manager, *args, **kwargs)
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return wrapper
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for class_ in ActivityPubBase.CLASSES:
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setattr(self, class_, make_wrapper(self, class_))
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def setup_css(self, folder="."):
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import sass
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THEME_STYLE = "light"
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THEME_COLOR = "#1d781d"
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SASS_DIR = os.path.join(os.path.abspath(folder), "sass")
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theme_css = f"$primary-color: {THEME_COLOR};\n"
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with open(os.path.join(SASS_DIR, f"{THEME_STYLE}.scss")) as f:
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theme_css += f.read()
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theme_css += "\n"
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with open(os.path.join(SASS_DIR, "base_theme.scss")) as f:
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raw_css = theme_css + f.read()
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self.CSS = sass.compile(string=raw_css, output_style="compressed")
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def make_defaults(self):
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"""
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A default field can refer to itself, which means that it needs a
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value to begin with.
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>>> m = Manager()
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>>> n = m.Note(attributedTo="alyssa", id="23")
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>>> n.to_dict()
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{'@context': 'https://www.w3.org/ns/activitystreams', 'attributedTo': 'alyssa', 'id': 'alyssa/note/23', 'type': 'Note'}
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A default can be a $-variable, or the name of a "Class.field_name".
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"""
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return {
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"$SCHEME": "https",
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"$HOST": "example.com",
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"Person.id": "$SCHEME://$HOST/$id",
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"Person.likes": "$id/likes",
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"Person.following": "$id/following",
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"Person.followers": "$id/followers",
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"Person.liked": "$id/liked",
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"Person.inbox": "$id/inbox",
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"Person.outbox": "$id/outbox",
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"Person.url": "$id",
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"Note.id": "$attributedTo/note/$id",
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}
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def user_agent(self):
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return "%s (%s/%s; +%s)" % (requests.utils.default_user_agent(),
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self.app_name,
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self.version,
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self.expand_defaults("$SCHEME/$HOST"))
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def expand_defaults(self, string, obj=None):
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"""
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Expand a string with defaults.
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"""
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for key in self.defaults:
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if key.startswith("$"):
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if callable(self.defaults[key]):
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string = string.replace(key, self.defaults[key]())
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else:
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string = string.replace(key, self.defaults[key])
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if obj:
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for key in self.parse(string):
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if key.startswith("$"):
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if getattr(obj, "ap_" + key[1:]) is None:
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raise Exception("expansion requires %s" % key[1:])
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string = string.replace(key, getattr(obj, "ap_" + key[1:]))
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return string
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def parse(self, string):
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"""
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Parse a string delimited by non-alpha, non-$ symbols.
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>>> from activitypub.manager import Manager
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>>> m = Manager()
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>>> m.parse("apple/banana/$variable")
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['apple', 'banana', '$variable']
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"""
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retval = []
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current = []
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for s in string:
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if s.isalpha() or (s in ["$"] and len(current) == 0):
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current.append(s)
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else:
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if current:
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retval.append("".join(current))
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if s == "$":
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current = ["$"]
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else:
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current = []
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if current:
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retval.append("".join(current))
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return retval
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def from_dict(self, data):
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from ..classes import ActivityPubBase
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return ActivityPubBase.from_dict(data)
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def to_list(self, item):
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if isinstance(item, list):
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return item
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return [item]
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def on_post_to_box(self, box, activity):
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"""
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manager.on_post_to_box("inbox", activity)
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manager.on_post_to_box("outbox", activity)
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manager.on_post_to_box("replies", reply)
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"""
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self.database.activities.insert_one(
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{
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"box": box,
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"activity": activity.to_dict(),
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"type": self.to_list(activity.type),
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"remote_id": activity.id,
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"meta": {
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"undo": False,
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"deleted": False
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},
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}
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)
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self.callback(box, activity.id)
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def delete_reply(self, actor, note):
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if note.inReplyTo:
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self.database.activities.update_one(
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{"activity.object.id": note.inReplyTo},
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{"$inc": {"meta.count_reply": -1, "meta.count_direct_reply": -1}},
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)
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def set_callback(self, callback):
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self.callback = callback
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def get_followers(self, remote_id):
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q = {
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"remote_id": remote_id,
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"box": "inbox",
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"type": "follow",
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"meta.undo": False,
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}
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return [doc["activity"]["actor"]
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for doc in self.database.activities.find(q)]
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def get_following(self, remote_id):
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q = {
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"remote_id": remote_id,
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"box": "outbox",
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"type": "follow",
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"meta.undo": False,
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}
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return [doc["activity"]["object"]
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for doc in self.database.activities.find(q)]
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def get_iri(self, iri):
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if iri.startswith(self.expand_defaults("$SCHEME/$HOST")):
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## get from table
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## self.database.activity.find()
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## TODO: WIP
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pass
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else:
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try:
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response = requests.get(
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iri,
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headers={
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"User-Agent": self.user_agent(),
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"Accept": "application/activity+json",
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},
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timeout=10,
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allow_redirects=False,
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**kwargs)
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except:
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raise Exception("unable to fetch uri")
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return self.handle(response)
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def handle_response(self, response):
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if response.status_code == 404:
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raise Exception("iri is not found")
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elif response.status_code == 410:
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raise Exception("iri is gone")
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elif response.status_code in [500, 502, 503]:
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raise Exception("unable to fetch; server error")
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response.raise_for_status()
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return response.json()
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def load_secret_key(self, name):
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key = self._load_secret_key(name)
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## Override to do something with secret key
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def _load_secret_key(self, name):
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"""
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Load or create a secret key for name.
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"""
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filename = os.path.join(self.key_path, "%s.key" % name)
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if not os.path.exists(filename):
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os.makedirs(os.path.dirname(filename), exist_ok=True)
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key = binascii.hexlify(os.urandom(32)).decode("utf-8")
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with open(filename, "w+") as f:
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f.write(key)
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else:
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with open(filename) as f:
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key = f.read()
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return key
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def after_request(self, function):
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"""
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Decorator
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"""
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return function
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def login_required(self, function):
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"""
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Decorator
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"""
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## decorate function here
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return function
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def template_filter(self):
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"""
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Decorator
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"""
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def decorator(function):
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return function
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return decorator
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## Singleton for the Application
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## Allows it to be in scope for decorating the app's
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## methods and functions
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app = DataWrapper()
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