Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/requests/cookies.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # -*- coding: utf-8 -*-
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2
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3 """
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4 Compatibility code to be able to use `cookielib.CookieJar` with requests.
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5
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6 requests.utils imports from here, so be careful with imports.
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7 """
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8
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9 import copy
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10 import time
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11 import collections
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12 from .compat import cookielib, urlparse, urlunparse, Morsel
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13
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14 try:
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15 import threading
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16 # grr, pyflakes: this fixes "redefinition of unused 'threading'"
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17 threading
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18 except ImportError:
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19 import dummy_threading as threading
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20
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21
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22 class MockRequest(object):
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23 """Wraps a `requests.Request` to mimic a `urllib2.Request`.
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24
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25 The code in `cookielib.CookieJar` expects this interface in order to correctly
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26 manage cookie policies, i.e., determine whether a cookie can be set, given the
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27 domains of the request and the cookie.
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28
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29 The original request object is read-only. The client is responsible for collecting
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30 the new headers via `get_new_headers()` and interpreting them appropriately. You
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31 probably want `get_cookie_header`, defined below.
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32 """
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33
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34 def __init__(self, request):
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35 self._r = request
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36 self._new_headers = {}
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37 self.type = urlparse(self._r.url).scheme
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38
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39 def get_type(self):
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40 return self.type
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41
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42 def get_host(self):
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43 return urlparse(self._r.url).netloc
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44
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45 def get_origin_req_host(self):
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46 return self.get_host()
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47
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48 def get_full_url(self):
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49 # Only return the response's URL if the user hadn't set the Host
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50 # header
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51 if not self._r.headers.get('Host'):
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52 return self._r.url
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53 # If they did set it, retrieve it and reconstruct the expected domain
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54 host = self._r.headers['Host']
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55 parsed = urlparse(self._r.url)
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56 # Reconstruct the URL as we expect it
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57 return urlunparse([
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58 parsed.scheme, host, parsed.path, parsed.params, parsed.query,
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59 parsed.fragment
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60 ])
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61
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62 def is_unverifiable(self):
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63 return True
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64
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65 def has_header(self, name):
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66 return name in self._r.headers or name in self._new_headers
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67
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68 def get_header(self, name, default=None):
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69 return self._r.headers.get(name, self._new_headers.get(name, default))
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70
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71 def add_header(self, key, val):
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72 """cookielib has no legitimate use for this method; add it back if you find one."""
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73 raise NotImplementedError("Cookie headers should be added with add_unredirected_header()")
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74
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75 def add_unredirected_header(self, name, value):
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76 self._new_headers[name] = value
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77
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78 def get_new_headers(self):
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79 return self._new_headers
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80
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81 @property
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82 def unverifiable(self):
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83 return self.is_unverifiable()
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84
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85 @property
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86 def origin_req_host(self):
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87 return self.get_origin_req_host()
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88
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89 @property
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90 def host(self):
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91 return self.get_host()
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92
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93
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94 class MockResponse(object):
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95 """Wraps a `httplib.HTTPMessage` to mimic a `urllib.addinfourl`.
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96
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97 ...what? Basically, expose the parsed HTTP headers from the server response
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98 the way `cookielib` expects to see them.
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99 """
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100
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101 def __init__(self, headers):
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102 """Make a MockResponse for `cookielib` to read.
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103
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104 :param headers: a httplib.HTTPMessage or analogous carrying the headers
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105 """
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106 self._headers = headers
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107
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108 def info(self):
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109 return self._headers
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110
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111 def getheaders(self, name):
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112 self._headers.getheaders(name)
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113
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114
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115 def extract_cookies_to_jar(jar, request, response):
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116 """Extract the cookies from the response into a CookieJar.
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117
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118 :param jar: cookielib.CookieJar (not necessarily a RequestsCookieJar)
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119 :param request: our own requests.Request object
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120 :param response: urllib3.HTTPResponse object
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121 """
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122 if not (hasattr(response, '_original_response') and
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123 response._original_response):
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124 return
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125 # the _original_response field is the wrapped httplib.HTTPResponse object,
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126 req = MockRequest(request)
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127 # pull out the HTTPMessage with the headers and put it in the mock:
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128 res = MockResponse(response._original_response.msg)
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129 jar.extract_cookies(res, req)
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130
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131
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132 def get_cookie_header(jar, request):
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133 """Produce an appropriate Cookie header string to be sent with `request`, or None."""
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134 r = MockRequest(request)
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135 jar.add_cookie_header(r)
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136 return r.get_new_headers().get('Cookie')
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137
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138
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139 def remove_cookie_by_name(cookiejar, name, domain=None, path=None):
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140 """Unsets a cookie by name, by default over all domains and paths.
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141
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142 Wraps CookieJar.clear(), is O(n).
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143 """
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144 clearables = []
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145 for cookie in cookiejar:
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146 if cookie.name == name:
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147 if domain is None or domain == cookie.domain:
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148 if path is None or path == cookie.path:
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149 clearables.append((cookie.domain, cookie.path, cookie.name))
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150
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151 for domain, path, name in clearables:
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152 cookiejar.clear(domain, path, name)
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153
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154
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155 class CookieConflictError(RuntimeError):
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156 """There are two cookies that meet the criteria specified in the cookie jar.
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157 Use .get and .set and include domain and path args in order to be more specific."""
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158
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159
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160 class RequestsCookieJar(cookielib.CookieJar, collections.MutableMapping):
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161 """Compatibility class; is a cookielib.CookieJar, but exposes a dict
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162 interface.
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163
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164 This is the CookieJar we create by default for requests and sessions that
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165 don't specify one, since some clients may expect response.cookies and
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166 session.cookies to support dict operations.
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167
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168 Requests does not use the dict interface internally; it's just for
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169 compatibility with external client code. All requests code should work
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170 out of the box with externally provided instances of ``CookieJar``, e.g.
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171 ``LWPCookieJar`` and ``FileCookieJar``.
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172
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173 Unlike a regular CookieJar, this class is pickleable.
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174
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175 .. warning:: dictionary operations that are normally O(1) may be O(n).
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176 """
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177 def get(self, name, default=None, domain=None, path=None):
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178 """Dict-like get() that also supports optional domain and path args in
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179 order to resolve naming collisions from using one cookie jar over
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180 multiple domains.
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181
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182 .. warning:: operation is O(n), not O(1)."""
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183 try:
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184 return self._find_no_duplicates(name, domain, path)
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185 except KeyError:
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186 return default
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187
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188 def set(self, name, value, **kwargs):
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189 """Dict-like set() that also supports optional domain and path args in
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190 order to resolve naming collisions from using one cookie jar over
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191 multiple domains."""
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192 # support client code that unsets cookies by assignment of a None value:
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193 if value is None:
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194 remove_cookie_by_name(self, name, domain=kwargs.get('domain'), path=kwargs.get('path'))
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195 return
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196
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197 if isinstance(value, Morsel):
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198 c = morsel_to_cookie(value)
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199 else:
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200 c = create_cookie(name, value, **kwargs)
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201 self.set_cookie(c)
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202 return c
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203
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204 def iterkeys(self):
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205 """Dict-like iterkeys() that returns an iterator of names of cookies
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206 from the jar. See itervalues() and iteritems()."""
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207 for cookie in iter(self):
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208 yield cookie.name
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209
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210 def keys(self):
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211 """Dict-like keys() that returns a list of names of cookies from the
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212 jar. See values() and items()."""
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213 return list(self.iterkeys())
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214
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215 def itervalues(self):
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216 """Dict-like itervalues() that returns an iterator of values of cookies
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217 from the jar. See iterkeys() and iteritems()."""
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218 for cookie in iter(self):
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219 yield cookie.value
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220
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221 def values(self):
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222 """Dict-like values() that returns a list of values of cookies from the
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223 jar. See keys() and items()."""
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224 return list(self.itervalues())
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225
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226 def iteritems(self):
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227 """Dict-like iteritems() that returns an iterator of name-value tuples
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228 from the jar. See iterkeys() and itervalues()."""
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229 for cookie in iter(self):
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230 yield cookie.name, cookie.value
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231
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232 def items(self):
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233 """Dict-like items() that returns a list of name-value tuples from the
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234 jar. See keys() and values(). Allows client-code to call
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235 ``dict(RequestsCookieJar)`` and get a vanilla python dict of key value
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236 pairs."""
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237 return list(self.iteritems())
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238
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239 def list_domains(self):
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240 """Utility method to list all the domains in the jar."""
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241 domains = []
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242 for cookie in iter(self):
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243 if cookie.domain not in domains:
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244 domains.append(cookie.domain)
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245 return domains
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246
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247 def list_paths(self):
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248 """Utility method to list all the paths in the jar."""
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249 paths = []
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250 for cookie in iter(self):
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251 if cookie.path not in paths:
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252 paths.append(cookie.path)
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253 return paths
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254
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255 def multiple_domains(self):
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256 """Returns True if there are multiple domains in the jar.
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257 Returns False otherwise."""
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258 domains = []
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259 for cookie in iter(self):
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260 if cookie.domain is not None and cookie.domain in domains:
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261 return True
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262 domains.append(cookie.domain)
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263 return False # there is only one domain in jar
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264
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265 def get_dict(self, domain=None, path=None):
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266 """Takes as an argument an optional domain and path and returns a plain
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267 old Python dict of name-value pairs of cookies that meet the
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268 requirements."""
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269 dictionary = {}
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270 for cookie in iter(self):
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271 if (domain is None or cookie.domain == domain) and (path is None
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272 or cookie.path == path):
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273 dictionary[cookie.name] = cookie.value
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274 return dictionary
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275
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276 def __getitem__(self, name):
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277 """Dict-like __getitem__() for compatibility with client code. Throws
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278 exception if there are more than one cookie with name. In that case,
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279 use the more explicit get() method instead.
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280
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281 .. warning:: operation is O(n), not O(1)."""
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282
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283 return self._find_no_duplicates(name)
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284
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285 def __setitem__(self, name, value):
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286 """Dict-like __setitem__ for compatibility with client code. Throws
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287 exception if there is already a cookie of that name in the jar. In that
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288 case, use the more explicit set() method instead."""
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289
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290 self.set(name, value)
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291
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292 def __delitem__(self, name):
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293 """Deletes a cookie given a name. Wraps ``cookielib.CookieJar``'s
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294 ``remove_cookie_by_name()``."""
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295 remove_cookie_by_name(self, name)
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296
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297 def set_cookie(self, cookie, *args, **kwargs):
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298 if hasattr(cookie.value, 'startswith') and cookie.value.startswith('"') and cookie.value.endswith('"'):
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299 cookie.value = cookie.value.replace('\\"', '')
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300 return super(RequestsCookieJar, self).set_cookie(cookie, *args, **kwargs)
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301
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302 def update(self, other):
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303 """Updates this jar with cookies from another CookieJar or dict-like"""
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304 if isinstance(other, cookielib.CookieJar):
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305 for cookie in other:
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306 self.set_cookie(copy.copy(cookie))
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307 else:
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308 super(RequestsCookieJar, self).update(other)
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309
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310 def _find(self, name, domain=None, path=None):
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311 """Requests uses this method internally to get cookie values. Takes as
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312 args name and optional domain and path. Returns a cookie.value. If
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313 there are conflicting cookies, _find arbitrarily chooses one. See
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314 _find_no_duplicates if you want an exception thrown if there are
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315 conflicting cookies."""
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316 for cookie in iter(self):
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317 if cookie.name == name:
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318 if domain is None or cookie.domain == domain:
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319 if path is None or cookie.path == path:
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320 return cookie.value
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321
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322 raise KeyError('name=%r, domain=%r, path=%r' % (name, domain, path))
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323
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324 def _find_no_duplicates(self, name, domain=None, path=None):
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325 """Both ``__get_item__`` and ``get`` call this function: it's never
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326 used elsewhere in Requests. Takes as args name and optional domain and
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327 path. Returns a cookie.value. Throws KeyError if cookie is not found
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328 and CookieConflictError if there are multiple cookies that match name
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329 and optionally domain and path."""
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330 toReturn = None
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331 for cookie in iter(self):
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332 if cookie.name == name:
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333 if domain is None or cookie.domain == domain:
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334 if path is None or cookie.path == path:
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335 if toReturn is not None: # if there are multiple cookies that meet passed in criteria
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336 raise CookieConflictError('There are multiple cookies with name, %r' % (name))
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337 toReturn = cookie.value # we will eventually return this as long as no cookie conflict
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338
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339 if toReturn:
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340 return toReturn
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341 raise KeyError('name=%r, domain=%r, path=%r' % (name, domain, path))
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342
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343 def __getstate__(self):
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344 """Unlike a normal CookieJar, this class is pickleable."""
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345 state = self.__dict__.copy()
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346 # remove the unpickleable RLock object
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347 state.pop('_cookies_lock')
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348 return state
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349
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350 def __setstate__(self, state):
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351 """Unlike a normal CookieJar, this class is pickleable."""
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352 self.__dict__.update(state)
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353 if '_cookies_lock' not in self.__dict__:
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354 self._cookies_lock = threading.RLock()
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355
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356 def copy(self):
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357 """Return a copy of this RequestsCookieJar."""
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358 new_cj = RequestsCookieJar()
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359 new_cj.update(self)
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360 return new_cj
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361
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362
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363 def _copy_cookie_jar(jar):
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364 if jar is None:
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365 return None
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366
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367 if hasattr(jar, 'copy'):
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368 # We're dealing with an instane of RequestsCookieJar
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369 return jar.copy()
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370 # We're dealing with a generic CookieJar instance
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371 new_jar = copy.copy(jar)
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372 new_jar.clear()
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373 for cookie in jar:
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374 new_jar.set_cookie(copy.copy(cookie))
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375 return new_jar
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376
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377
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378 def create_cookie(name, value, **kwargs):
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379 """Make a cookie from underspecified parameters.
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parents:
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380
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381 By default, the pair of `name` and `value` will be set for the domain ''
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382 and sent on every request (this is sometimes called a "supercookie").
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383 """
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384 result = dict(
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385 version=0,
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386 name=name,
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387 value=value,
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388 port=None,
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389 domain='',
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390 path='/',
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391 secure=False,
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392 expires=None,
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393 discard=True,
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394 comment=None,
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395 comment_url=None,
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396 rest={'HttpOnly': None},
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397 rfc2109=False,)
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398
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399 badargs = set(kwargs) - set(result)
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400 if badargs:
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401 err = 'create_cookie() got unexpected keyword arguments: %s'
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402 raise TypeError(err % list(badargs))
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403
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404 result.update(kwargs)
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405 result['port_specified'] = bool(result['port'])
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406 result['domain_specified'] = bool(result['domain'])
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407 result['domain_initial_dot'] = result['domain'].startswith('.')
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408 result['path_specified'] = bool(result['path'])
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409
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410 return cookielib.Cookie(**result)
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411
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412
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413 def morsel_to_cookie(morsel):
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414 """Convert a Morsel object into a Cookie containing the one k/v pair."""
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415
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416 expires = None
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417 if morsel['max-age']:
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418 try:
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419 expires = int(time.time() + int(morsel['max-age']))
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420 except ValueError:
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421 raise TypeError('max-age: %s must be integer' % morsel['max-age'])
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422 elif morsel['expires']:
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423 time_template = '%a, %d-%b-%Y %H:%M:%S GMT'
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424 expires = int(time.mktime(
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425 time.strptime(morsel['expires'], time_template)) - time.timezone)
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426 return create_cookie(
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427 comment=morsel['comment'],
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428 comment_url=bool(morsel['comment']),
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429 discard=False,
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430 domain=morsel['domain'],
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431 expires=expires,
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432 name=morsel.key,
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433 path=morsel['path'],
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434 port=None,
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435 rest={'HttpOnly': morsel['httponly']},
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436 rfc2109=False,
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437 secure=bool(morsel['secure']),
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438 value=morsel.value,
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439 version=morsel['version'] or 0,
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440 )
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parents:
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441
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bcclaywell
parents:
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442
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443 def cookiejar_from_dict(cookie_dict, cookiejar=None, overwrite=True):
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444 """Returns a CookieJar from a key/value dictionary.
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bcclaywell
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445
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446 :param cookie_dict: Dict of key/values to insert into CookieJar.
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447 :param cookiejar: (optional) A cookiejar to add the cookies to.
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448 :param overwrite: (optional) If False, will not replace cookies
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bcclaywell
parents:
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449 already in the jar with new ones.
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bcclaywell
parents:
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450 """
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bcclaywell
parents:
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451 if cookiejar is None:
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parents:
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452 cookiejar = RequestsCookieJar()
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bcclaywell
parents:
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453
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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454 if cookie_dict is not None:
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bcclaywell
parents:
diff changeset
455 names_from_jar = [cookie.name for cookie in cookiejar]
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bcclaywell
parents:
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456 for name in cookie_dict:
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bcclaywell
parents:
diff changeset
457 if overwrite or (name not in names_from_jar):
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bcclaywell
parents:
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458 cookiejar.set_cookie(create_cookie(name, cookie_dict[name]))
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bcclaywell
parents:
diff changeset
459
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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460 return cookiejar
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
461
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
462
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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463 def merge_cookies(cookiejar, cookies):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
464 """Add cookies to cookiejar and returns a merged CookieJar.
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bcclaywell
parents:
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465
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
466 :param cookiejar: CookieJar object to add the cookies to.
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467 :param cookies: Dictionary or CookieJar object to be added.
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468 """
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bcclaywell
parents:
diff changeset
469 if not isinstance(cookiejar, cookielib.CookieJar):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
470 raise ValueError('You can only merge into CookieJar')
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bcclaywell
parents:
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471
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
472 if isinstance(cookies, dict):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
473 cookiejar = cookiejar_from_dict(
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
474 cookies, cookiejar=cookiejar, overwrite=False)
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bcclaywell
parents:
diff changeset
475 elif isinstance(cookies, cookielib.CookieJar):
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bcclaywell
parents:
diff changeset
476 try:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
477 cookiejar.update(cookies)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
478 except AttributeError:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
479 for cookie_in_jar in cookies:
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bcclaywell
parents:
diff changeset
480 cookiejar.set_cookie(cookie_in_jar)
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bcclaywell
parents:
diff changeset
481
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
482 return cookiejar