import gzip import json import os from functools import lru_cache from functools import wraps from typing import Any import flask from bson.objectid import ObjectId from flask import Response from flask import current_app as app from flask import redirect from flask import request from flask import session from flask import url_for from flask_wtf.csrf import CSRFProtect from little_boxes import activitypub as ap from poussetaches import PousseTaches import config from config import DB from config import ME from core import activitypub from core.db import find_activities from core.meta import MetaKey from core.meta import by_object_id from core.meta import by_type from core.meta import flag from core.meta import not_deleted # _Response = Union[flask.Response, werkzeug.wrappers.Response, str, Any] _Response = Any p = PousseTaches( os.getenv("MICROBLOGPUB_POUSSETACHES_HOST", "http://localhost:7991"), os.getenv("MICROBLOGPUB_INTERNAL_HOST", "http://localhost:5000"), ) csrf = CSRFProtect() back = activitypub.MicroblogPubBackend() ap.use_backend(back) MY_PERSON = ap.Person(**ME) @lru_cache(512) def build_resp(resp): """Encode the response to gzip if supported by the client.""" headers = {"Cache-Control": "max-age=0, private, must-revalidate"} accept_encoding = request.headers.get("Accept-Encoding", "") if "gzip" in accept_encoding.lower(): return ( gzip.compress(resp.encode(), compresslevel=6), {**headers, "Vary": "Accept-Encoding", "Content-Encoding": "gzip"}, ) return resp, headers def jsonify(data, content_type="application/json"): resp, headers = build_resp(json.dumps(data)) return Response(headers={**headers, "Content-Type": content_type}, response=resp) def htmlify(data): resp, headers = build_resp(data) return Response( response=resp, headers={**headers, "Content-Type": "text/html; charset=utf-8"} ) def activitypubify(**data): if "@context" not in data: data["@context"] = config.DEFAULT_CTX resp, headers = build_resp(json.dumps(data)) return Response( response=resp, headers={**headers, "Content-Type": "application/activity+json"} ) def is_api_request(): h = request.headers.get("Accept") if h is None: return False h = h.split(",")[0] if h in config.HEADERS or h == "application/json": return True return False def add_response_headers(headers={}): """This decorator adds the headers passed in to the response""" def decorator(f): @wraps(f) def decorated_function(*args, **kwargs): resp = flask.make_response(f(*args, **kwargs)) h = resp.headers for header, value in headers.items(): h[header] = value return resp return decorated_function return decorator def noindex(f): """This decorator passes X-Robots-Tag: noindex, nofollow""" return add_response_headers({"X-Robots-Tag": "noindex, nofollow"})(f) def login_required(f): @wraps(f) def decorated_function(*args, **kwargs): if not session.get("logged_in"): return redirect(url_for("admin.admin_login", next=request.url)) return f(*args, **kwargs) return decorated_function def _get_ip(): """Guess the IP address from the request. Only used for security purpose (failed logins or bad payload). Geoip will be returned if the "broxy" headers are set (it does Geoip using an offline database and append these special headers). """ ip = request.headers.get("X-Forwarded-For", request.remote_addr) geoip = None if request.headers.get("Broxy-Geoip-Country"): geoip = ( request.headers.get("Broxy-Geoip-Country") + "/" + request.headers.get("Broxy-Geoip-Region") ) return ip, geoip def _build_thread(data, include_children=True): # noqa: C901 data["_requested"] = True app.logger.info(f"_build_thread({data!r})") root_id = data["meta"].get( MetaKey.THREAD_ROOT_PARENT.value, data["meta"][MetaKey.OBJECT_ID.value] ) replies = [data] for dat in find_activities( {**by_object_id(root_id), **not_deleted(), **by_type(ap.ActivityType.CREATE)} ): replies.append(dat) for dat in find_activities( { **flag(MetaKey.THREAD_ROOT_PARENT, root_id), **not_deleted(), **by_type(ap.ActivityType.CREATE), } ): replies.append(dat) for dat in DB.replies.find( {**flag(MetaKey.THREAD_ROOT_PARENT, root_id), **not_deleted()} ): # Make a Note/Question/... looks like a Create dat = { "activity": {"object": dat["activity"]}, "meta": dat["meta"], "_id": dat["_id"], } replies.append(dat) replies = sorted(replies, key=lambda d: d["meta"]["published"]) # Index all the IDs in order to build a tree idx = {} replies2 = [] for rep in replies: rep_id = rep["activity"]["object"]["id"] if rep_id in idx: continue idx[rep_id] = rep.copy() idx[rep_id]["_nodes"] = [] replies2.append(rep) # Build the tree for rep in replies2: rep_id = rep["activity"]["object"]["id"] if rep_id == root_id: continue reply_of = ap._get_id(rep["activity"]["object"].get("inReplyTo")) try: idx[reply_of]["_nodes"].append(rep) except KeyError: app.logger.info(f"{reply_of} is not there! skipping {rep}") # Flatten the tree thread = [] def _flatten(node, level=0): node["_level"] = level thread.append(node) for snode in sorted( idx[node["activity"]["object"]["id"]]["_nodes"], key=lambda d: d["activity"]["object"]["published"], ): _flatten(snode, level=level + 1) try: _flatten(idx[root_id]) except KeyError: app.logger.info(f"{root_id} is not there! skipping") return thread def paginated_query(db, q, limit=25, sort_key="_id"): older_than = newer_than = None query_sort = -1 first_page = not request.args.get("older_than") and not request.args.get( "newer_than" ) query_older_than = request.args.get("older_than") query_newer_than = request.args.get("newer_than") if query_older_than: q["_id"] = {"$lt": ObjectId(query_older_than)} elif query_newer_than: q["_id"] = {"$gt": ObjectId(query_newer_than)} query_sort = 1 outbox_data = list(db.find(q, limit=limit + 1).sort(sort_key, query_sort)) outbox_len = len(outbox_data) outbox_data = sorted( outbox_data[:limit], key=lambda x: str(x[sort_key]), reverse=True ) if query_older_than: newer_than = str(outbox_data[0]["_id"]) if outbox_len == limit + 1: older_than = str(outbox_data[-1]["_id"]) elif query_newer_than: older_than = str(outbox_data[-1]["_id"]) if outbox_len == limit + 1: newer_than = str(outbox_data[0]["_id"]) elif first_page and outbox_len == limit + 1: older_than = str(outbox_data[-1]["_id"]) return outbox_data, older_than, newer_than