mirror of https://github.com/morpheus65535/bazarr
104 lines
3.6 KiB
Python
104 lines
3.6 KiB
Python
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# -*- coding: utf-8 -*-
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"""The module containing HTTPProxyDigestAuth."""
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import re
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from requests import cookies, utils
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from . import _digest_auth_compat as auth
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class HTTPProxyDigestAuth(auth.HTTPDigestAuth):
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"""HTTP digest authentication between proxy
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:param stale_rejects: The number of rejects indicate that:
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the client may wish to simply retry the request
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with a new encrypted response, without reprompting the user for a
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new username and password. i.e., retry build_digest_header
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:type stale_rejects: int
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"""
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_pat = re.compile(r'digest ', flags=re.IGNORECASE)
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def __init__(self, *args, **kwargs):
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super(HTTPProxyDigestAuth, self).__init__(*args, **kwargs)
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self.stale_rejects = 0
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self.init_per_thread_state()
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@property
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def stale_rejects(self):
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thread_local = getattr(self, '_thread_local', None)
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if thread_local is None:
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return self._stale_rejects
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return thread_local.stale_rejects
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@stale_rejects.setter
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def stale_rejects(self, value):
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thread_local = getattr(self, '_thread_local', None)
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if thread_local is None:
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self._stale_rejects = value
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else:
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thread_local.stale_rejects = value
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def init_per_thread_state(self):
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try:
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super(HTTPProxyDigestAuth, self).init_per_thread_state()
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except AttributeError:
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# If we're not on requests 2.8.0+ this method does not exist
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pass
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def handle_407(self, r, **kwargs):
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"""Handle HTTP 407 only once, otherwise give up
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:param r: current response
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:returns: responses, along with the new response
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"""
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if r.status_code == 407 and self.stale_rejects < 2:
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s_auth = r.headers.get("proxy-authenticate")
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if s_auth is None:
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raise IOError(
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"proxy server violated RFC 7235:"
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"407 response MUST contain header proxy-authenticate")
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elif not self._pat.match(s_auth):
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return r
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self.chal = utils.parse_dict_header(
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self._pat.sub('', s_auth, count=1))
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# if we present the user/passwd and still get rejected
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# https://tools.ietf.org/html/rfc2617#section-3.2.1
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if ('Proxy-Authorization' in r.request.headers and
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'stale' in self.chal):
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if self.chal['stale'].lower() == 'true': # try again
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self.stale_rejects += 1
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# wrong user/passwd
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elif self.chal['stale'].lower() == 'false':
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raise IOError("User or password is invalid")
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# Consume content and release the original connection
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# to allow our new request to reuse the same one.
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r.content
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r.close()
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prep = r.request.copy()
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cookies.extract_cookies_to_jar(prep._cookies, r.request, r.raw)
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prep.prepare_cookies(prep._cookies)
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prep.headers['Proxy-Authorization'] = self.build_digest_header(
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prep.method, prep.url)
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_r = r.connection.send(prep, **kwargs)
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_r.history.append(r)
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_r.request = prep
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return _r
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else: # give up authenticate
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return r
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def __call__(self, r):
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self.init_per_thread_state()
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# if we have nonce, then just use it, otherwise server will tell us
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if self.last_nonce:
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r.headers['Proxy-Authorization'] = self.build_digest_header(
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r.method, r.url
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)
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r.register_hook('response', self.handle_407)
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return r
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