Mercurial > repos > jpayne > bioproject_to_srr_2
diff requests/cookies.py @ 7:5eb2d5e3bf22
planemo upload for repository https://toolrepo.galaxytrakr.org/view/jpayne/bioproject_to_srr_2/556cac4fb538
author | jpayne |
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date | Sun, 05 May 2024 23:32:17 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/requests/cookies.py Sun May 05 23:32:17 2024 -0400 @@ -0,0 +1,561 @@ +""" +requests.cookies +~~~~~~~~~~~~~~~~ + +Compatibility code to be able to use `cookielib.CookieJar` with requests. + +requests.utils imports from here, so be careful with imports. +""" + +import calendar +import copy +import time + +from ._internal_utils import to_native_string +from .compat import Morsel, MutableMapping, cookielib, urlparse, urlunparse + +try: + import threading +except ImportError: + import dummy_threading as threading + + +class MockRequest: + """Wraps a `requests.Request` to mimic a `urllib2.Request`. + + The code in `cookielib.CookieJar` expects this interface in order to correctly + manage cookie policies, i.e., determine whether a cookie can be set, given the + domains of the request and the cookie. + + The original request object is read-only. The client is responsible for collecting + the new headers via `get_new_headers()` and interpreting them appropriately. You + probably want `get_cookie_header`, defined below. + """ + + def __init__(self, request): + self._r = request + self._new_headers = {} + self.type = urlparse(self._r.url).scheme + + def get_type(self): + return self.type + + def get_host(self): + return urlparse(self._r.url).netloc + + def get_origin_req_host(self): + return self.get_host() + + def get_full_url(self): + # Only return the response's URL if the user hadn't set the Host + # header + if not self._r.headers.get("Host"): + return self._r.url + # If they did set it, retrieve it and reconstruct the expected domain + host = to_native_string(self._r.headers["Host"], encoding="utf-8") + parsed = urlparse(self._r.url) + # Reconstruct the URL as we expect it + return urlunparse( + [ + parsed.scheme, + host, + parsed.path, + parsed.params, + parsed.query, + parsed.fragment, + ] + ) + + def is_unverifiable(self): + return True + + def has_header(self, name): + return name in self._r.headers or name in self._new_headers + + def get_header(self, name, default=None): + return self._r.headers.get(name, self._new_headers.get(name, default)) + + def add_header(self, key, val): + """cookielib has no legitimate use for this method; add it back if you find one.""" + raise NotImplementedError( + "Cookie headers should be added with add_unredirected_header()" + ) + + def add_unredirected_header(self, name, value): + self._new_headers[name] = value + + def get_new_headers(self): + return self._new_headers + + @property + def unverifiable(self): + return self.is_unverifiable() + + @property + def origin_req_host(self): + return self.get_origin_req_host() + + @property + def host(self): + return self.get_host() + + +class MockResponse: + """Wraps a `httplib.HTTPMessage` to mimic a `urllib.addinfourl`. + + ...what? Basically, expose the parsed HTTP headers from the server response + the way `cookielib` expects to see them. + """ + + def __init__(self, headers): + """Make a MockResponse for `cookielib` to read. + + :param headers: a httplib.HTTPMessage or analogous carrying the headers + """ + self._headers = headers + + def info(self): + return self._headers + + def getheaders(self, name): + self._headers.getheaders(name) + + +def extract_cookies_to_jar(jar, request, response): + """Extract the cookies from the response into a CookieJar. + + :param jar: cookielib.CookieJar (not necessarily a RequestsCookieJar) + :param request: our own requests.Request object + :param response: urllib3.HTTPResponse object + """ + if not (hasattr(response, "_original_response") and response._original_response): + return + # the _original_response field is the wrapped httplib.HTTPResponse object, + req = MockRequest(request) + # pull out the HTTPMessage with the headers and put it in the mock: + res = MockResponse(response._original_response.msg) + jar.extract_cookies(res, req) + + +def get_cookie_header(jar, request): + """ + Produce an appropriate Cookie header string to be sent with `request`, or None. + + :rtype: str + """ + r = MockRequest(request) + jar.add_cookie_header(r) + return r.get_new_headers().get("Cookie") + + +def remove_cookie_by_name(cookiejar, name, domain=None, path=None): + """Unsets a cookie by name, by default over all domains and paths. + + Wraps CookieJar.clear(), is O(n). + """ + clearables = [] + for cookie in cookiejar: + if cookie.name != name: + continue + if domain is not None and domain != cookie.domain: + continue + if path is not None and path != cookie.path: + continue + clearables.append((cookie.domain, cookie.path, cookie.name)) + + for domain, path, name in clearables: + cookiejar.clear(domain, path, name) + + +class CookieConflictError(RuntimeError): + """There are two cookies that meet the criteria specified in the cookie jar. + Use .get and .set and include domain and path args in order to be more specific. + """ + + +class RequestsCookieJar(cookielib.CookieJar, MutableMapping): + """Compatibility class; is a cookielib.CookieJar, but exposes a dict + interface. + + This is the CookieJar we create by default for requests and sessions that + don't specify one, since some clients may expect response.cookies and + session.cookies to support dict operations. + + Requests does not use the dict interface internally; it's just for + compatibility with external client code. All requests code should work + out of the box with externally provided instances of ``CookieJar``, e.g. + ``LWPCookieJar`` and ``FileCookieJar``. + + Unlike a regular CookieJar, this class is pickleable. + + .. warning:: dictionary operations that are normally O(1) may be O(n). + """ + + def get(self, name, default=None, domain=None, path=None): + """Dict-like get() that also supports optional domain and path args in + order to resolve naming collisions from using one cookie jar over + multiple domains. + + .. warning:: operation is O(n), not O(1). + """ + try: + return self._find_no_duplicates(name, domain, path) + except KeyError: + return default + + def set(self, name, value, **kwargs): + """Dict-like set() that also supports optional domain and path args in + order to resolve naming collisions from using one cookie jar over + multiple domains. + """ + # support client code that unsets cookies by assignment of a None value: + if value is None: + remove_cookie_by_name( + self, name, domain=kwargs.get("domain"), path=kwargs.get("path") + ) + return + + if isinstance(value, Morsel): + c = morsel_to_cookie(value) + else: + c = create_cookie(name, value, **kwargs) + self.set_cookie(c) + return c + + def iterkeys(self): + """Dict-like iterkeys() that returns an iterator of names of cookies + from the jar. + + .. seealso:: itervalues() and iteritems(). + """ + for cookie in iter(self): + yield cookie.name + + def keys(self): + """Dict-like keys() that returns a list of names of cookies from the + jar. + + .. seealso:: values() and items(). + """ + return list(self.iterkeys()) + + def itervalues(self): + """Dict-like itervalues() that returns an iterator of values of cookies + from the jar. + + .. seealso:: iterkeys() and iteritems(). + """ + for cookie in iter(self): + yield cookie.value + + def values(self): + """Dict-like values() that returns a list of values of cookies from the + jar. + + .. seealso:: keys() and items(). + """ + return list(self.itervalues()) + + def iteritems(self): + """Dict-like iteritems() that returns an iterator of name-value tuples + from the jar. + + .. seealso:: iterkeys() and itervalues(). + """ + for cookie in iter(self): + yield cookie.name, cookie.value + + def items(self): + """Dict-like items() that returns a list of name-value tuples from the + jar. Allows client-code to call ``dict(RequestsCookieJar)`` and get a + vanilla python dict of key value pairs. + + .. seealso:: keys() and values(). + """ + return list(self.iteritems()) + + def list_domains(self): + """Utility method to list all the domains in the jar.""" + domains = [] + for cookie in iter(self): + if cookie.domain not in domains: + domains.append(cookie.domain) + return domains + + def list_paths(self): + """Utility method to list all the paths in the jar.""" + paths = [] + for cookie in iter(self): + if cookie.path not in paths: + paths.append(cookie.path) + return paths + + def multiple_domains(self): + """Returns True if there are multiple domains in the jar. + Returns False otherwise. + + :rtype: bool + """ + domains = [] + for cookie in iter(self): + if cookie.domain is not None and cookie.domain in domains: + return True + domains.append(cookie.domain) + return False # there is only one domain in jar + + def get_dict(self, domain=None, path=None): + """Takes as an argument an optional domain and path and returns a plain + old Python dict of name-value pairs of cookies that meet the + requirements. + + :rtype: dict + """ + dictionary = {} + for cookie in iter(self): + if (domain is None or cookie.domain == domain) and ( + path is None or cookie.path == path + ): + dictionary[cookie.name] = cookie.value + return dictionary + + def __contains__(self, name): + try: + return super().__contains__(name) + except CookieConflictError: + return True + + def __getitem__(self, name): + """Dict-like __getitem__() for compatibility with client code. Throws + exception if there are more than one cookie with name. In that case, + use the more explicit get() method instead. + + .. warning:: operation is O(n), not O(1). + """ + return self._find_no_duplicates(name) + + def __setitem__(self, name, value): + """Dict-like __setitem__ for compatibility with client code. Throws + exception if there is already a cookie of that name in the jar. In that + case, use the more explicit set() method instead. + """ + self.set(name, value) + + def __delitem__(self, name): + """Deletes a cookie given a name. Wraps ``cookielib.CookieJar``'s + ``remove_cookie_by_name()``. + """ + remove_cookie_by_name(self, name) + + def set_cookie(self, cookie, *args, **kwargs): + if ( + hasattr(cookie.value, "startswith") + and cookie.value.startswith('"') + and cookie.value.endswith('"') + ): + cookie.value = cookie.value.replace('\\"', "") + return super().set_cookie(cookie, *args, **kwargs) + + def update(self, other): + """Updates this jar with cookies from another CookieJar or dict-like""" + if isinstance(other, cookielib.CookieJar): + for cookie in other: + self.set_cookie(copy.copy(cookie)) + else: + super().update(other) + + def _find(self, name, domain=None, path=None): + """Requests uses this method internally to get cookie values. + + If there are conflicting cookies, _find arbitrarily chooses one. + See _find_no_duplicates if you want an exception thrown if there are + conflicting cookies. + + :param name: a string containing name of cookie + :param domain: (optional) string containing domain of cookie + :param path: (optional) string containing path of cookie + :return: cookie.value + """ + 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: + return cookie.value + + raise KeyError(f"name={name!r}, domain={domain!r}, path={path!r}") + + def _find_no_duplicates(self, name, domain=None, path=None): + """Both ``__get_item__`` and ``get`` call this function: it's never + used elsewhere in Requests. + + :param name: a string containing name of cookie + :param domain: (optional) string containing domain of cookie + :param path: (optional) string containing path of cookie + :raises KeyError: if cookie is not found + :raises CookieConflictError: if there are multiple cookies + 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