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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2018 cervinko, janeczku, OzzieIsaacs
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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 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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class ReverseProxied(object):
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"""Wrap the application in this middleware and configure the
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front-end server to add these headers, to let you quietly bind
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this to a URL other than / and to an HTTP scheme that is
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different than what is used locally.
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Code courtesy of: http://flask.pocoo.org/snippets/35/
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In nginx:
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location /myprefix {
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proxy_pass http://127.0.0.1:8083;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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proxy_set_header X-Scheme $scheme;
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proxy_set_header X-Script-Name /myprefix;
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}
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"""
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def __init__(self, application):
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self.app = application
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def __call__(self, environ, start_response):
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script_name = environ.get('HTTP_X_SCRIPT_NAME', '')
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if script_name:
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environ['SCRIPT_NAME'] = script_name
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path_info = environ.get('PATH_INFO', '')
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if path_info and path_info.startswith(script_name):
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environ['PATH_INFO'] = path_info[len(script_name):]
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scheme = environ.get('HTTP_X_SCHEME', '')
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if scheme:
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environ['wsgi.url_scheme'] = scheme
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servr = environ.get('HTTP_X_FORWARDED_SERVER', '')
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if servr:
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environ['HTTP_HOST'] = servr
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return self.app(environ, start_response)
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