101 lines
2.7 KiB
Python
101 lines
2.7 KiB
Python
# ContentDB
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# Copyright (C) 2018-21 rubenwardy
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from urllib.parse import urljoin, urlparse
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import user_agents
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from flask import request, abort
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from werkzeug.datastructures import MultiDict
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from app.models import *
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def is_safe_url(target):
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ref_url = urlparse(request.host_url)
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test_url = urlparse(urljoin(request.host_url, target))
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return test_url.scheme in ('http', 'https') and \
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ref_url.netloc == test_url.netloc
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# These are given to Jinja in template_filters.py
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def abs_url_for(path, **kwargs):
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scheme = "https" if app.config["BASE_URL"][:5] == "https" else "http"
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return url_for(path, _external=True, _scheme=scheme, **kwargs)
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def abs_url(path):
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return urljoin(app.config["BASE_URL"], path)
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def url_current(abs=False):
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args = MultiDict(request.args)
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dargs = dict(args.lists())
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dargs.update(request.view_args)
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if abs:
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return abs_url_for(request.endpoint, **dargs)
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else:
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return url_for(request.endpoint, **dargs)
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def url_set_anchor(anchor):
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args = MultiDict(request.args)
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dargs = dict(args.lists())
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dargs.update(request.view_args)
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return url_for(request.endpoint, **dargs) + "#" + anchor
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def url_set_query(**kwargs):
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if request.endpoint is None:
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return None
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args = MultiDict(request.args)
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for key, value in kwargs.items():
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if key == "_add":
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for key2, value_to_add in value.items():
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values = set(args.getlist(key2))
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values.add(value_to_add)
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args.setlist(key2, list(values))
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elif key == "_remove":
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for key2, value_to_remove in value.items():
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values = set(args.getlist(key2))
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values.discard(value_to_remove)
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args.setlist(key2, list(values))
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else:
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args.setlist(key, [ value ])
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dargs = dict(args.lists())
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if request.view_args:
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dargs.update(request.view_args)
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return url_for(request.endpoint, **dargs)
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def get_int_or_abort(v, default=None):
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if v is None:
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return default
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try:
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return int(v or default)
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except ValueError:
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abort(400)
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def is_user_bot():
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user_agent = request.headers.get('User-Agent')
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if user_agent is None:
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return True
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user_agent = user_agents.parse(user_agent)
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return user_agent.is_bot
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