562 lines
18 KiB
Python
562 lines
18 KiB
Python
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"""
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requests.cookies
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~~~~~~~~~~~~~~~~
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Compatibility code to be able to use `http.cookiejar.CookieJar` with requests.
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requests.utils imports from here, so be careful with imports.
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"""
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import calendar
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import copy
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import time
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from ._internal_utils import to_native_string
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from .compat import Morsel, MutableMapping, cookielib, urlparse, urlunparse
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try:
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import threading
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except ImportError:
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import dummy_threading as threading
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class MockRequest:
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"""Wraps a `requests.Request` to mimic a `urllib2.Request`.
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The code in `http.cookiejar.CookieJar` expects this interface in order to correctly
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manage cookie policies, i.e., determine whether a cookie can be set, given the
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domains of the request and the cookie.
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The original request object is read-only. The client is responsible for collecting
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the new headers via `get_new_headers()` and interpreting them appropriately. You
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probably want `get_cookie_header`, defined below.
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"""
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def __init__(self, request):
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self._r = request
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self._new_headers = {}
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self.type = urlparse(self._r.url).scheme
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def get_type(self):
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return self.type
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def get_host(self):
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return urlparse(self._r.url).netloc
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def get_origin_req_host(self):
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return self.get_host()
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def get_full_url(self):
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# Only return the response's URL if the user hadn't set the Host
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# header
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if not self._r.headers.get("Host"):
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return self._r.url
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# If they did set it, retrieve it and reconstruct the expected domain
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host = to_native_string(self._r.headers["Host"], encoding="utf-8")
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parsed = urlparse(self._r.url)
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# Reconstruct the URL as we expect it
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return urlunparse(
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[
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parsed.scheme,
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host,
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parsed.path,
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parsed.params,
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parsed.query,
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parsed.fragment,
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]
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)
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def is_unverifiable(self):
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return True
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def has_header(self, name):
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return name in self._r.headers or name in self._new_headers
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def get_header(self, name, default=None):
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return self._r.headers.get(name, self._new_headers.get(name, default))
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def add_header(self, key, val):
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"""cookiejar has no legitimate use for this method; add it back if you find one."""
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raise NotImplementedError(
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"Cookie headers should be added with add_unredirected_header()"
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)
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def add_unredirected_header(self, name, value):
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self._new_headers[name] = value
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def get_new_headers(self):
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return self._new_headers
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@property
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def unverifiable(self):
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return self.is_unverifiable()
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@property
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def origin_req_host(self):
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return self.get_origin_req_host()
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@property
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def host(self):
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return self.get_host()
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class MockResponse:
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"""Wraps a `httplib.HTTPMessage` to mimic a `urllib.addinfourl`.
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...what? Basically, expose the parsed HTTP headers from the server response
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the way `http.cookiejar` expects to see them.
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"""
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def __init__(self, headers):
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"""Make a MockResponse for `cookiejar` to read.
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:param headers: a httplib.HTTPMessage or analogous carrying the headers
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"""
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self._headers = headers
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def info(self):
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return self._headers
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def getheaders(self, name):
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self._headers.getheaders(name)
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def extract_cookies_to_jar(jar, request, response):
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"""Extract the cookies from the response into a CookieJar.
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:param jar: http.cookiejar.CookieJar (not necessarily a RequestsCookieJar)
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:param request: our own requests.Request object
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:param response: urllib3.HTTPResponse object
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"""
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if not (hasattr(response, "_original_response") and response._original_response):
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return
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# the _original_response field is the wrapped httplib.HTTPResponse object,
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req = MockRequest(request)
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# pull out the HTTPMessage with the headers and put it in the mock:
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res = MockResponse(response._original_response.msg)
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jar.extract_cookies(res, req)
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def get_cookie_header(jar, request):
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"""
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Produce an appropriate Cookie header string to be sent with `request`, or None.
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:rtype: str
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"""
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r = MockRequest(request)
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jar.add_cookie_header(r)
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return r.get_new_headers().get("Cookie")
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def remove_cookie_by_name(cookiejar, name, domain=None, path=None):
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"""Unsets a cookie by name, by default over all domains and paths.
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Wraps CookieJar.clear(), is O(n).
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"""
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clearables = []
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for cookie in cookiejar:
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if cookie.name != name:
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continue
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if domain is not None and domain != cookie.domain:
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continue
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if path is not None and path != cookie.path:
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continue
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clearables.append((cookie.domain, cookie.path, cookie.name))
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for domain, path, name in clearables:
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cookiejar.clear(domain, path, name)
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class CookieConflictError(RuntimeError):
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"""There are two cookies that meet the criteria specified in the cookie jar.
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Use .get and .set and include domain and path args in order to be more specific.
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"""
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class RequestsCookieJar(cookielib.CookieJar, MutableMapping):
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"""Compatibility class; is a http.cookiejar.CookieJar, but exposes a dict
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interface.
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This is the CookieJar we create by default for requests and sessions that
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don't specify one, since some clients may expect response.cookies and
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session.cookies to support dict operations.
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Requests does not use the dict interface internally; it's just for
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compatibility with external client code. All requests code should work
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out of the box with externally provided instances of ``CookieJar``, e.g.
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``LWPCookieJar`` and ``FileCookieJar``.
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Unlike a regular CookieJar, this class is pickleable.
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.. warning:: dictionary operations that are normally O(1) may be O(n).
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"""
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def get(self, name, default=None, domain=None, path=None):
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"""Dict-like get() that also supports optional domain and path args in
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order to resolve naming collisions from using one cookie jar over
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multiple domains.
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.. warning:: operation is O(n), not O(1).
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"""
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try:
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return self._find_no_duplicates(name, domain, path)
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except KeyError:
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return default
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def set(self, name, value, **kwargs):
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"""Dict-like set() that also supports optional domain and path args in
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order to resolve naming collisions from using one cookie jar over
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multiple domains.
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"""
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# support client code that unsets cookies by assignment of a None value:
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if value is None:
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remove_cookie_by_name(
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self, name, domain=kwargs.get("domain"), path=kwargs.get("path")
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)
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return
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if isinstance(value, Morsel):
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c = morsel_to_cookie(value)
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else:
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c = create_cookie(name, value, **kwargs)
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self.set_cookie(c)
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return c
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def iterkeys(self):
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"""Dict-like iterkeys() that returns an iterator of names of cookies
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from the jar.
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.. seealso:: itervalues() and iteritems().
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"""
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for cookie in iter(self):
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yield cookie.name
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def keys(self):
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"""Dict-like keys() that returns a list of names of cookies from the
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jar.
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.. seealso:: values() and items().
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"""
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return list(self.iterkeys())
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def itervalues(self):
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"""Dict-like itervalues() that returns an iterator of values of cookies
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from the jar.
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.. seealso:: iterkeys() and iteritems().
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"""
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for cookie in iter(self):
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yield cookie.value
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def values(self):
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"""Dict-like values() that returns a list of values of cookies from the
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jar.
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.. seealso:: keys() and items().
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"""
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return list(self.itervalues())
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def iteritems(self):
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"""Dict-like iteritems() that returns an iterator of name-value tuples
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from the jar.
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.. seealso:: iterkeys() and itervalues().
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"""
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for cookie in iter(self):
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yield cookie.name, cookie.value
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def items(self):
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"""Dict-like items() that returns a list of name-value tuples from the
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jar. Allows client-code to call ``dict(RequestsCookieJar)`` and get a
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vanilla python dict of key value pairs.
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.. seealso:: keys() and values().
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"""
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return list(self.iteritems())
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def list_domains(self):
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"""Utility method to list all the domains in the jar."""
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domains = []
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for cookie in iter(self):
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if cookie.domain not in domains:
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domains.append(cookie.domain)
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return domains
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def list_paths(self):
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"""Utility method to list all the paths in the jar."""
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paths = []
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for cookie in iter(self):
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if cookie.path not in paths:
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paths.append(cookie.path)
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return paths
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def multiple_domains(self):
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"""Returns True if there are multiple domains in the jar.
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Returns False otherwise.
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:rtype: bool
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"""
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domains = []
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for cookie in iter(self):
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if cookie.domain is not None and cookie.domain in domains:
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return True
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domains.append(cookie.domain)
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return False # there is only one domain in jar
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def get_dict(self, domain=None, path=None):
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"""Takes as an argument an optional domain and path and returns a plain
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old Python dict of name-value pairs of cookies that meet the
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requirements.
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:rtype: dict
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"""
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dictionary = {}
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for cookie in iter(self):
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if (domain is None or cookie.domain == domain) and (
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path is None or cookie.path == path
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):
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dictionary[cookie.name] = cookie.value
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return dictionary
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def __contains__(self, name):
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try:
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return super().__contains__(name)
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except CookieConflictError:
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return True
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def __getitem__(self, name):
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"""Dict-like __getitem__() for compatibility with client code. Throws
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exception if there are more than one cookie with name. In that case,
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use the more explicit get() method instead.
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.. warning:: operation is O(n), not O(1).
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"""
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return self._find_no_duplicates(name)
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def __setitem__(self, name, value):
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"""Dict-like __setitem__ for compatibility with client code. Throws
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exception if there is already a cookie of that name in the jar. In that
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case, use the more explicit set() method instead.
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"""
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self.set(name, value)
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def __delitem__(self, name):
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"""Deletes a cookie given a name. Wraps ``http.cookiejar.CookieJar``'s
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``remove_cookie_by_name()``.
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"""
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remove_cookie_by_name(self, name)
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def set_cookie(self, cookie, *args, **kwargs):
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if (
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hasattr(cookie.value, "startswith")
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and cookie.value.startswith('"')
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and cookie.value.endswith('"')
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):
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cookie.value = cookie.value.replace('\\"', "")
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return super().set_cookie(cookie, *args, **kwargs)
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def update(self, other):
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"""Updates this jar with cookies from another CookieJar or dict-like"""
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if isinstance(other, cookielib.CookieJar):
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for cookie in other:
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self.set_cookie(copy.copy(cookie))
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else:
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super().update(other)
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def _find(self, name, domain=None, path=None):
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"""Requests uses this method internally to get cookie values.
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If there are conflicting cookies, _find arbitrarily chooses one.
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See _find_no_duplicates if you want an exception thrown if there are
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conflicting cookies.
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:param name: a string containing name of cookie
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:param domain: (optional) string containing domain of cookie
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:param path: (optional) string containing path of cookie
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:return: cookie.value
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"""
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for cookie in iter(self):
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if cookie.name == name:
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if domain is None or cookie.domain == domain:
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if path is None or cookie.path == path:
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return cookie.value
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raise KeyError(f"name={name!r}, domain={domain!r}, path={path!r}")
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def _find_no_duplicates(self, name, domain=None, path=None):
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"""Both ``__get_item__`` and ``get`` call this function: it's never
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used elsewhere in Requests.
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:param name: a string containing name of cookie
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:param domain: (optional) string containing domain of cookie
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:param path: (optional) string containing path of cookie
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:raises KeyError: if cookie is not found
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:raises CookieConflictError: if there are multiple cookies
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|
that match name and optionally domain and path
|
||
|
|
:return: cookie.value
|
||
|
|
"""
|
||
|
|
toReturn = None
|
||
|
|
for cookie in iter(self):
|
||
|
|
if cookie.name == name:
|
||
|
|
if domain is None or cookie.domain == domain:
|
||
|
|
if path is None or cookie.path == path:
|
||
|
|
if toReturn is not None:
|
||
|
|
# if there are multiple cookies that meet passed in criteria
|
||
|
|
raise CookieConflictError(
|
||
|
|
f"There are multiple cookies with name, {name!r}"
|
||
|
|
)
|
||
|
|
# we will eventually return this as long as no cookie conflict
|
||
|
|
toReturn = cookie.value
|
||
|
|
|
||
|
|
if toReturn:
|
||
|
|
return toReturn
|
||
|
|
raise KeyError(f"name={name!r}, domain={domain!r}, path={path!r}")
|
||
|
|
|
||
|
|
def __getstate__(self):
|
||
|
|
"""Unlike a normal CookieJar, this class is pickleable."""
|
||
|
|
state = self.__dict__.copy()
|
||
|
|
# remove the unpickleable RLock object
|
||
|
|
state.pop("_cookies_lock")
|
||
|
|
return state
|
||
|
|
|
||
|
|
def __setstate__(self, state):
|
||
|
|
"""Unlike a normal CookieJar, this class is pickleable."""
|
||
|
|
self.__dict__.update(state)
|
||
|
|
if "_cookies_lock" not in self.__dict__:
|
||
|
|
self._cookies_lock = threading.RLock()
|
||
|
|
|
||
|
|
def copy(self):
|
||
|
|
"""Return a copy of this RequestsCookieJar."""
|
||
|
|
new_cj = RequestsCookieJar()
|
||
|
|
new_cj.set_policy(self.get_policy())
|
||
|
|
new_cj.update(self)
|
||
|
|
return new_cj
|
||
|
|
|
||
|
|
def get_policy(self):
|
||
|
|
"""Return the CookiePolicy instance used."""
|
||
|
|
return self._policy
|
||
|
|
|
||
|
|
|
||
|
|
def _copy_cookie_jar(jar):
|
||
|
|
if jar is None:
|
||
|
|
return None
|
||
|
|
|
||
|
|
if hasattr(jar, "copy"):
|
||
|
|
# We're dealing with an instance of RequestsCookieJar
|
||
|
|
return jar.copy()
|
||
|
|
# We're dealing with a generic CookieJar instance
|
||
|
|
new_jar = copy.copy(jar)
|
||
|
|
new_jar.clear()
|
||
|
|
for cookie in jar:
|
||
|
|
new_jar.set_cookie(copy.copy(cookie))
|
||
|
|
return new_jar
|
||
|
|
|
||
|
|
|
||
|
|
def create_cookie(name, value, **kwargs):
|
||
|
|
"""Make a cookie from underspecified parameters.
|
||
|
|
|
||
|
|
By default, the pair of `name` and `value` will be set for the domain ''
|
||
|
|
and sent on every request (this is sometimes called a "supercookie").
|
||
|
|
"""
|
||
|
|
result = {
|
||
|
|
"version": 0,
|
||
|
|
"name": name,
|
||
|
|
"value": value,
|
||
|
|
"port": None,
|
||
|
|
"domain": "",
|
||
|
|
"path": "/",
|
||
|
|
"secure": False,
|
||
|
|
"expires": None,
|
||
|
|
"discard": True,
|
||
|
|
"comment": None,
|
||
|
|
"comment_url": None,
|
||
|
|
"rest": {"HttpOnly": None},
|
||
|
|
"rfc2109": False,
|
||
|
|
}
|
||
|
|
|
||
|
|
badargs = set(kwargs) - set(result)
|
||
|
|
if badargs:
|
||
|
|
raise TypeError(
|
||
|
|
f"create_cookie() got unexpected keyword arguments: {list(badargs)}"
|
||
|
|
)
|
||
|
|
|
||
|
|
result.update(kwargs)
|
||
|
|
result["port_specified"] = bool(result["port"])
|
||
|
|
result["domain_specified"] = bool(result["domain"])
|
||
|
|
result["domain_initial_dot"] = result["domain"].startswith(".")
|
||
|
|
result["path_specified"] = bool(result["path"])
|
||
|
|
|
||
|
|
return cookielib.Cookie(**result)
|
||
|
|
|
||
|
|
|
||
|
|
def morsel_to_cookie(morsel):
|
||
|
|
"""Convert a Morsel object into a Cookie containing the one k/v pair."""
|
||
|
|
|
||
|
|
expires = None
|
||
|
|
if morsel["max-age"]:
|
||
|
|
try:
|
||
|
|
expires = int(time.time() + int(morsel["max-age"]))
|
||
|
|
except ValueError:
|
||
|
|
raise TypeError(f"max-age: {morsel['max-age']} must be integer")
|
||
|
|
elif morsel["expires"]:
|
||
|
|
time_template = "%a, %d-%b-%Y %H:%M:%S GMT"
|
||
|
|
expires = calendar.timegm(time.strptime(morsel["expires"], time_template))
|
||
|
|
return create_cookie(
|
||
|
|
comment=morsel["comment"],
|
||
|
|
comment_url=bool(morsel["comment"]),
|
||
|
|
discard=False,
|
||
|
|
domain=morsel["domain"],
|
||
|
|
expires=expires,
|
||
|
|
name=morsel.key,
|
||
|
|
path=morsel["path"],
|
||
|
|
port=None,
|
||
|
|
rest={"HttpOnly": morsel["httponly"]},
|
||
|
|
rfc2109=False,
|
||
|
|
secure=bool(morsel["secure"]),
|
||
|
|
value=morsel.value,
|
||
|
|
version=morsel["version"] or 0,
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def cookiejar_from_dict(cookie_dict, cookiejar=None, overwrite=True):
|
||
|
|
"""Returns a CookieJar from a key/value dictionary.
|
||
|
|
|
||
|
|
:param cookie_dict: Dict of key/values to insert into CookieJar.
|
||
|
|
:param cookiejar: (optional) A cookiejar to add the cookies to.
|
||
|
|
:param overwrite: (optional) If False, will not replace cookies
|
||
|
|
already in the jar with new ones.
|
||
|
|
:rtype: CookieJar
|
||
|
|
"""
|
||
|
|
if cookiejar is None:
|
||
|
|
cookiejar = RequestsCookieJar()
|
||
|
|
|
||
|
|
if cookie_dict is not None:
|
||
|
|
names_from_jar = [cookie.name for cookie in cookiejar]
|
||
|
|
for name in cookie_dict:
|
||
|
|
if overwrite or (name not in names_from_jar):
|
||
|
|
cookiejar.set_cookie(create_cookie(name, cookie_dict[name]))
|
||
|
|
|
||
|
|
return cookiejar
|
||
|
|
|
||
|
|
|
||
|
|
def merge_cookies(cookiejar, cookies):
|
||
|
|
"""Add cookies to cookiejar and returns a merged CookieJar.
|
||
|
|
|
||
|
|
:param cookiejar: CookieJar object to add the cookies to.
|
||
|
|
:param cookies: Dictionary or CookieJar object to be added.
|
||
|
|
:rtype: CookieJar
|
||
|
|
"""
|
||
|
|
if not isinstance(cookiejar, cookielib.CookieJar):
|
||
|
|
raise ValueError("You can only merge into CookieJar")
|
||
|
|
|
||
|
|
if isinstance(cookies, dict):
|
||
|
|
cookiejar = cookiejar_from_dict(cookies, cookiejar=cookiejar, overwrite=False)
|
||
|
|
elif isinstance(cookies, cookielib.CookieJar):
|
||
|
|
try:
|
||
|
|
cookiejar.update(cookies)
|
||
|
|
except AttributeError:
|
||
|
|
for cookie_in_jar in cookies:
|
||
|
|
cookiejar.set_cookie(cookie_in_jar)
|
||
|
|
|
||
|
|
return cookiejar
|