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73 lines
2.2 KiB
73 lines
2.2 KiB
# -*- encoding: utf-8 -*-
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try:
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from urllib import quote
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except ImportError:
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from urllib.parse import quote
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from werkzeug.datastructures import Headers
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def host(environ):
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"""
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Reconstruct host from environment. A modified version
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of http://www.python.org/dev/peps/pep-0333/#url-reconstruction
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"""
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url = environ['wsgi.url_scheme']+'://'
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if environ.get('HTTP_HOST'):
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url += environ['HTTP_HOST']
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else:
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url += environ['SERVER_NAME']
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if environ['wsgi.url_scheme'] == 'https':
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if environ['SERVER_PORT'] != '443':
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url += ':' + environ['SERVER_PORT']
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else:
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if environ['SERVER_PORT'] != '80':
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url += ':' + environ['SERVER_PORT']
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return url + quote(environ.get('SCRIPT_NAME', ''))
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class SubURI(object):
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def __init__(self, app):
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self.app = app
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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['PATH_INFO']
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if path_info.startswith(script_name):
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environ['PATH_INFO'] = path_info[len(script_name):]
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return self.app(environ, start_response)
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class CORSMiddleware(object):
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def __init__(self, app, origin):
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self.app = app
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self.origin = origin
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def __call__(self, environ, start_response):
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def add_cors_headers(status, headers, exc_info=None):
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headers = Headers(headers)
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headers.add("Access-Control-Allow-Origin", self.origin(environ))
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headers.add("Access-Control-Allow-Headers", "Origin, Content-Type, X-Origin")
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headers.add("Access-Control-Allow-Credentials", "true")
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headers.add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE")
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headers.add("Access-Control-Expose-Headers", "X-Set-Cookie")
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return start_response(status, headers.to_list(), exc_info)
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if environ.get("REQUEST_METHOD") == "OPTIONS":
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add_cors_headers("200 Ok", [("Content-Type", "text/plain")])
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return ['200 Ok']
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return self.app(environ, add_cors_headers)
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