forked from edward/owl-map
95 lines
2.4 KiB
Python
95 lines
2.4 KiB
Python
"""OSM Authentication."""
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import json
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import typing
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from datetime import datetime
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from urllib.parse import urlencode
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import flask
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import lxml.etree
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import requests
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from requests_oauthlib import OAuth2Session
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from . import user_agent_headers
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from .model import User
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osm_api_base = "https://api.openstreetmap.org/api/0.6"
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scope = ["read_prefs", "write_api"]
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def get_session() -> OAuth2Session:
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"""Get session."""
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token = flask.session.get("oauth_token")
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if not token:
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user = flask.g.user
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assert user.is_authenticated
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token = json.loads(user.osm_oauth_token)
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flask.session["oauth_token"] = token
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callback = flask.url_for("oauth_callback", _external=True)
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return OAuth2Session(
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flask.current_app.config["CLIENT_KEY"],
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redirect_uri=callback,
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scope=scope,
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token=token,
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)
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def api_put_request(path: str, **kwargs: typing.Any) -> requests.Response:
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"""Send OSM API PUT request."""
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oauth = get_session()
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return oauth.request(
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"PUT", osm_api_base + path, headers=user_agent_headers(), **kwargs
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)
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def api_request(path: str, **params: typing.Any) -> requests.Response:
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"""Send OSM API request."""
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url = osm_api_base + path
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if params:
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url += "?" + urlencode(params)
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oauth = get_session()
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return oauth.get(url, timeout=4)
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def parse_iso_date(value: str) -> datetime:
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"""Parse ISO date."""
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return datetime.strptime(value, "%Y-%m-%dT%H:%M:%SZ")
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def parse_userinfo_call(xml: bytes) -> dict[str, typing.Any]:
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"""Parse userinfo call."""
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root = lxml.etree.fromstring(xml)
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user = root[0]
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img = user.find(".//img")
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account_created_date = user.get("account_created")
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assert account_created_date
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account_created = parse_iso_date(account_created_date)
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assert user.tag == "user"
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id_str = user.get("id")
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assert id_str and isinstance(id_str, str)
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return {
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"account_created": account_created,
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"id": int(id_str),
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"username": user.get("display_name"),
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"description": user.findtext(".//description"),
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"img": (img.get("href") if img is not None else None),
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}
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def get_username() -> str | None:
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"""Get username of current user."""
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if "user_id" not in flask.session:
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return None # not authorized
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user_id = flask.session["user_id"]
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user = User.query.get(user_id)
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return typing.cast(str, user.username)
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