Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/requests_toolbelt/auth/http_proxy_digest.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 # -*- coding: utf-8 -*- |
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2 """The module containing HTTPProxyDigestAuth.""" |
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3 import re |
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4 |
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5 from requests import cookies, utils |
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6 |
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7 from . import _digest_auth_compat as auth |
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8 |
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9 |
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10 class HTTPProxyDigestAuth(auth.HTTPDigestAuth): |
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11 """HTTP digest authentication between proxy |
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12 |
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13 :param stale_rejects: The number of rejects indicate that: |
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14 the client may wish to simply retry the request |
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15 with a new encrypted response, without reprompting the user for a |
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16 new username and password. i.e., retry build_digest_header |
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17 :type stale_rejects: int |
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18 """ |
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19 _pat = re.compile(r'digest ', flags=re.IGNORECASE) |
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20 |
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21 def __init__(self, *args, **kwargs): |
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22 super(HTTPProxyDigestAuth, self).__init__(*args, **kwargs) |
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23 self.stale_rejects = 0 |
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24 |
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25 self.init_per_thread_state() |
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26 |
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27 @property |
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28 def stale_rejects(self): |
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29 thread_local = getattr(self, '_thread_local', None) |
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30 if thread_local is None: |
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31 return self._stale_rejects |
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32 return thread_local.stale_rejects |
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33 |
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34 @stale_rejects.setter |
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35 def stale_rejects(self, value): |
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36 thread_local = getattr(self, '_thread_local', None) |
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37 if thread_local is None: |
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38 self._stale_rejects = value |
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39 else: |
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40 thread_local.stale_rejects = value |
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41 |
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42 def init_per_thread_state(self): |
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43 try: |
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44 super(HTTPProxyDigestAuth, self).init_per_thread_state() |
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45 except AttributeError: |
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46 # If we're not on requests 2.8.0+ this method does not exist |
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47 pass |
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48 |
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49 def handle_407(self, r, **kwargs): |
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50 """Handle HTTP 407 only once, otherwise give up |
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51 |
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52 :param r: current response |
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53 :returns: responses, along with the new response |
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54 """ |
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55 if r.status_code == 407 and self.stale_rejects < 2: |
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56 s_auth = r.headers.get("proxy-authenticate") |
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57 if s_auth is None: |
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58 raise IOError( |
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59 "proxy server violated RFC 7235:" |
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60 "407 response MUST contain header proxy-authenticate") |
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61 elif not self._pat.match(s_auth): |
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62 return r |
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63 |
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64 self.chal = utils.parse_dict_header( |
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65 self._pat.sub('', s_auth, count=1)) |
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66 |
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67 # if we present the user/passwd and still get rejected |
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68 # http://tools.ietf.org/html/rfc2617#section-3.2.1 |
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69 if ('Proxy-Authorization' in r.request.headers and |
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70 'stale' in self.chal): |
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71 if self.chal['stale'].lower() == 'true': # try again |
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72 self.stale_rejects += 1 |
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73 # wrong user/passwd |
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74 elif self.chal['stale'].lower() == 'false': |
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75 raise IOError("User or password is invalid") |
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76 |
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77 # Consume content and release the original connection |
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78 # to allow our new request to reuse the same one. |
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79 r.content |
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80 r.close() |
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81 prep = r.request.copy() |
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82 cookies.extract_cookies_to_jar(prep._cookies, r.request, r.raw) |
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83 prep.prepare_cookies(prep._cookies) |
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84 |
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85 prep.headers['Proxy-Authorization'] = self.build_digest_header( |
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86 prep.method, prep.url) |
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87 _r = r.connection.send(prep, **kwargs) |
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88 _r.history.append(r) |
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89 _r.request = prep |
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90 |
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91 return _r |
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92 else: # give up authenticate |
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93 return r |
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94 |
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95 def __call__(self, r): |
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96 self.init_per_thread_state() |
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97 # if we have nonce, then just use it, otherwise server will tell us |
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98 if self.last_nonce: |
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99 r.headers['Proxy-Authorization'] = self.build_digest_header( |
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100 r.method, r.url |
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101 ) |
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102 r.register_hook('response', self.handle_407) |
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103 return r |