Produits Entr'ouvert » Passerelle

# passerelle - uniform access to multiple data sources and services

# Copyright (C) 2021 Entr'ouvert

#

# This program is free software: you can redistribute it and/or modify it

# under the terms of the GNU Affero General Public License as published

# by the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU Affero General Public License for more details.

#

# You should have received a copy of the GNU Affero General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import urllib.parse

def get_url_origin(url):

    '''Build origin of an URL'''

    parsed = urllib.parse.urlparse(url)

    if ':' in parsed.netloc:

        host, port = parsed.netloc.split(':', 1)

        if parsed.scheme == 'http' and port == 80:

            port = None

        if parsed.scheme == 'https' and port == 443:

            port = None

    else:

        host, port = parsed.netloc, None

    result = '%s://%s' % (parsed.scheme, host)

    if port:

        result += ':%s' % port

    return result

def is_same_origin(url1, url2):

    if 'null' in [url1, url2] or not url1 or not url2:

        return False

    try:

        origin1 = get_url_origin(url1)

        origin2 = get_url_origin(url2)

    except (ValueError, TypeError):

        return False

    return origin1 == origin2