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comparison requests/cookies.py @ 7:5eb2d5e3bf22

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planemo upload for repository https://toolrepo.galaxytrakr.org/view/jpayne/bioproject_to_srr_2/556cac4fb538
author jpayne
date Sun, 05 May 2024 23:32:17 -0400
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6:b2745907b1eb 7:5eb2d5e3bf22
1 """
2 requests.cookies
3 ~~~~~~~~~~~~~~~~
4
5 Compatibility code to be able to use `cookielib.CookieJar` with requests.
6
7 requests.utils imports from here, so be careful with imports.
8 """
9
10 import calendar
11 import copy
12 import time
13
14 from ._internal_utils import to_native_string
15 from .compat import Morsel, MutableMapping, cookielib, urlparse, urlunparse
16
17 try:
18 import threading
19 except ImportError:
20 import dummy_threading as threading
21
22
23 class MockRequest:
24 """Wraps a `requests.Request` to mimic a `urllib2.Request`.
25
26 The code in `cookielib.CookieJar` expects this interface in order to correctly
27 manage cookie policies, i.e., determine whether a cookie can be set, given the
28 domains of the request and the cookie.
29
30 The original request object is read-only. The client is responsible for collecting
31 the new headers via `get_new_headers()` and interpreting them appropriately. You
32 probably want `get_cookie_header`, defined below.
33 """
34
35 def __init__(self, request):
36 self._r = request
37 self._new_headers = {}
38 self.type = urlparse(self._r.url).scheme
39
40 def get_type(self):
41 return self.type
42
43 def get_host(self):
44 return urlparse(self._r.url).netloc
45
46 def get_origin_req_host(self):
47 return self.get_host()
48
49 def get_full_url(self):
50 # Only return the response's URL if the user hadn't set the Host
51 # header
52 if not self._r.headers.get("Host"):
53 return self._r.url
54 # If they did set it, retrieve it and reconstruct the expected domain
55 host = to_native_string(self._r.headers["Host"], encoding="utf-8")
56 parsed = urlparse(self._r.url)
57 # Reconstruct the URL as we expect it
58 return urlunparse(
59 [
60 parsed.scheme,
61 host,
62 parsed.path,
63 parsed.params,
64 parsed.query,
65 parsed.fragment,
66 ]
67 )
68
69 def is_unverifiable(self):
70 return True
71
72 def has_header(self, name):
73 return name in self._r.headers or name in self._new_headers
74
75 def get_header(self, name, default=None):
76 return self._r.headers.get(name, self._new_headers.get(name, default))
77
78 def add_header(self, key, val):
79 """cookielib has no legitimate use for this method; add it back if you find one."""
80 raise NotImplementedError(
81 "Cookie headers should be added with add_unredirected_header()"
82 )
83
84 def add_unredirected_header(self, name, value):
85 self._new_headers[name] = value
86
87 def get_new_headers(self):
88 return self._new_headers
89
90 @property
91 def unverifiable(self):
92 return self.is_unverifiable()
93
94 @property
95 def origin_req_host(self):
96 return self.get_origin_req_host()
97
98 @property
99 def host(self):
100 return self.get_host()
101
102
103 class MockResponse:
104 """Wraps a `httplib.HTTPMessage` to mimic a `urllib.addinfourl`.
105
106 ...what? Basically, expose the parsed HTTP headers from the server response
107 the way `cookielib` expects to see them.
108 """
109
110 def __init__(self, headers):
111 """Make a MockResponse for `cookielib` to read.
112
113 :param headers: a httplib.HTTPMessage or analogous carrying the headers
114 """
115 self._headers = headers
116
117 def info(self):
118 return self._headers
119
120 def getheaders(self, name):
121 self._headers.getheaders(name)
122
123
124 def extract_cookies_to_jar(jar, request, response):
125 """Extract the cookies from the response into a CookieJar.
126
127 :param jar: cookielib.CookieJar (not necessarily a RequestsCookieJar)
128 :param request: our own requests.Request object
129 :param response: urllib3.HTTPResponse object
130 """
131 if not (hasattr(response, "_original_response") and response._original_response):
132 return
133 # the _original_response field is the wrapped httplib.HTTPResponse object,
134 req = MockRequest(request)
135 # pull out the HTTPMessage with the headers and put it in the mock:
136 res = MockResponse(response._original_response.msg)
137 jar.extract_cookies(res, req)
138
139
140 def get_cookie_header(jar, request):
141 """
142 Produce an appropriate Cookie header string to be sent with `request`, or None.
143
144 :rtype: str
145 """
146 r = MockRequest(request)
147 jar.add_cookie_header(r)
148 return r.get_new_headers().get("Cookie")
149
150
151 def remove_cookie_by_name(cookiejar, name, domain=None, path=None):
152 """Unsets a cookie by name, by default over all domains and paths.
153
154 Wraps CookieJar.clear(), is O(n).
155 """
156 clearables = []
157 for cookie in cookiejar:
158 if cookie.name != name:
159 continue
160 if domain is not None and domain != cookie.domain:
161 continue
162 if path is not None and path != cookie.path:
163 continue
164 clearables.append((cookie.domain, cookie.path, cookie.name))
165
166 for domain, path, name in clearables:
167 cookiejar.clear(domain, path, name)
168
169
170 class CookieConflictError(RuntimeError):
171 """There are two cookies that meet the criteria specified in the cookie jar.
172 Use .get and .set and include domain and path args in order to be more specific.
173 """
174
175
176 class RequestsCookieJar(cookielib.CookieJar, MutableMapping):
177 """Compatibility class; is a cookielib.CookieJar, but exposes a dict
178 interface.
179
180 This is the CookieJar we create by default for requests and sessions that
181 don't specify one, since some clients may expect response.cookies and
182 session.cookies to support dict operations.
183
184 Requests does not use the dict interface internally; it's just for
185 compatibility with external client code. All requests code should work
186 out of the box with externally provided instances of ``CookieJar``, e.g.
187 ``LWPCookieJar`` and ``FileCookieJar``.
188
189 Unlike a regular CookieJar, this class is pickleable.
190
191 .. warning:: dictionary operations that are normally O(1) may be O(n).
192 """
193
194 def get(self, name, default=None, domain=None, path=None):
195 """Dict-like get() that also supports optional domain and path args in
196 order to resolve naming collisions from using one cookie jar over
197 multiple domains.
198
199 .. warning:: operation is O(n), not O(1).
200 """
201 try:
202 return self._find_no_duplicates(name, domain, path)
203 except KeyError:
204 return default
205
206 def set(self, name, value, **kwargs):
207 """Dict-like set() that also supports optional domain and path args in
208 order to resolve naming collisions from using one cookie jar over
209 multiple domains.
210 """
211 # support client code that unsets cookies by assignment of a None value:
212 if value is None:
213 remove_cookie_by_name(
214 self, name, domain=kwargs.get("domain"), path=kwargs.get("path")
215 )
216 return
217
218 if isinstance(value, Morsel):
219 c = morsel_to_cookie(value)
220 else:
221 c = create_cookie(name, value, **kwargs)
222 self.set_cookie(c)
223 return c
224
225 def iterkeys(self):
226 """Dict-like iterkeys() that returns an iterator of names of cookies
227 from the jar.
228
229 .. seealso:: itervalues() and iteritems().
230 """
231 for cookie in iter(self):
232 yield cookie.name
233
234 def keys(self):
235 """Dict-like keys() that returns a list of names of cookies from the
236 jar.
237
238 .. seealso:: values() and items().
239 """
240 return list(self.iterkeys())
241
242 def itervalues(self):
243 """Dict-like itervalues() that returns an iterator of values of cookies
244 from the jar.
245
246 .. seealso:: iterkeys() and iteritems().
247 """
248 for cookie in iter(self):
249 yield cookie.value
250
251 def values(self):
252 """Dict-like values() that returns a list of values of cookies from the
253 jar.
254
255 .. seealso:: keys() and items().
256 """
257 return list(self.itervalues())
258
259 def iteritems(self):
260 """Dict-like iteritems() that returns an iterator of name-value tuples
261 from the jar.
262
263 .. seealso:: iterkeys() and itervalues().
264 """
265 for cookie in iter(self):
266 yield cookie.name, cookie.value
267
268 def items(self):
269 """Dict-like items() that returns a list of name-value tuples from the
270 jar. Allows client-code to call ``dict(RequestsCookieJar)`` and get a
271 vanilla python dict of key value pairs.
272
273 .. seealso:: keys() and values().
274 """
275 return list(self.iteritems())
276
277 def list_domains(self):
278 """Utility method to list all the domains in the jar."""
279 domains = []
280 for cookie in iter(self):
281 if cookie.domain not in domains:
282 domains.append(cookie.domain)
283 return domains
284
285 def list_paths(self):
286 """Utility method to list all the paths in the jar."""
287 paths = []
288 for cookie in iter(self):
289 if cookie.path not in paths:
290 paths.append(cookie.path)
291 return paths
292
293 def multiple_domains(self):
294 """Returns True if there are multiple domains in the jar.
295 Returns False otherwise.
296
297 :rtype: bool
298 """
299 domains = []
300 for cookie in iter(self):
301 if cookie.domain is not None and cookie.domain in domains:
302 return True
303 domains.append(cookie.domain)
304 return False # there is only one domain in jar
305
306 def get_dict(self, domain=None, path=None):
307 """Takes as an argument an optional domain and path and returns a plain
308 old Python dict of name-value pairs of cookies that meet the
309 requirements.
310
311 :rtype: dict
312 """
313 dictionary = {}
314 for cookie in iter(self):
315 if (domain is None or cookie.domain == domain) and (
316 path is None or cookie.path == path
317 ):
318 dictionary[cookie.name] = cookie.value
319 return dictionary
320
321 def __contains__(self, name):
322 try:
323 return super().__contains__(name)
324 except CookieConflictError:
325 return True
326
327 def __getitem__(self, name):
328 """Dict-like __getitem__() for compatibility with client code. Throws
329 exception if there are more than one cookie with name. In that case,
330 use the more explicit get() method instead.
331
332 .. warning:: operation is O(n), not O(1).
333 """
334 return self._find_no_duplicates(name)
335
336 def __setitem__(self, name, value):
337 """Dict-like __setitem__ for compatibility with client code. Throws
338 exception if there is already a cookie of that name in the jar. In that
339 case, use the more explicit set() method instead.
340 """
341 self.set(name, value)
342
343 def __delitem__(self, name):
344 """Deletes a cookie given a name. Wraps ``cookielib.CookieJar``'s
345 ``remove_cookie_by_name()``.
346 """
347 remove_cookie_by_name(self, name)
348
349 def set_cookie(self, cookie, *args, **kwargs):
350 if (
351 hasattr(cookie.value, "startswith")
352 and cookie.value.startswith('"')
353 and cookie.value.endswith('"')
354 ):
355 cookie.value = cookie.value.replace('\\"', "")
356 return super().set_cookie(cookie, *args, **kwargs)
357
358 def update(self, other):
359 """Updates this jar with cookies from another CookieJar or dict-like"""
360 if isinstance(other, cookielib.CookieJar):
361 for cookie in other:
362 self.set_cookie(copy.copy(cookie))
363 else:
364 super().update(other)
365
366 def _find(self, name, domain=None, path=None):
367 """Requests uses this method internally to get cookie values.
368
369 If there are conflicting cookies, _find arbitrarily chooses one.
370 See _find_no_duplicates if you want an exception thrown if there are
371 conflicting cookies.
372
373 :param name: a string containing name of cookie
374 :param domain: (optional) string containing domain of cookie
375 :param path: (optional) string containing path of cookie
376 :return: cookie.value
377 """
378 for cookie in iter(self):
379 if cookie.name == name:
380 if domain is None or cookie.domain == domain:
381 if path is None or cookie.path == path:
382 return cookie.value
383
384 raise KeyError(f"name={name!r}, domain={domain!r}, path={path!r}")
385
386 def _find_no_duplicates(self, name, domain=None, path=None):
387 """Both ``__get_item__`` and ``get`` call this function: it's never
388 used elsewhere in Requests.
389
390 :param name: a string containing name of cookie
391 :param domain: (optional) string containing domain of cookie
392 :param path: (optional) string containing path of cookie
393 :raises KeyError: if cookie is not found
394 :raises CookieConflictError: if there are multiple cookies
395 that match name and optionally domain and path
396 :return: cookie.value
397 """
398 toReturn = None
399 for cookie in iter(self):
400 if cookie.name == name:
401 if domain is None or cookie.domain == domain:
402 if path is None or cookie.path == path:
403 if toReturn is not None:
404 # if there are multiple cookies that meet passed in criteria
405 raise CookieConflictError(
406 f"There are multiple cookies with name, {name!r}"
407 )
408 # we will eventually return this as long as no cookie conflict
409 toReturn = cookie.value
410
411 if toReturn:
412 return toReturn
413 raise KeyError(f"name={name!r}, domain={domain!r}, path={path!r}")
414
415 def __getstate__(self):
416 """Unlike a normal CookieJar, this class is pickleable."""
417 state = self.__dict__.copy()
418 # remove the unpickleable RLock object
419 state.pop("_cookies_lock")
420 return state
421
422 def __setstate__(self, state):
423 """Unlike a normal CookieJar, this class is pickleable."""
424 self.__dict__.update(state)
425 if "_cookies_lock" not in self.__dict__:
426 self._cookies_lock = threading.RLock()
427
428 def copy(self):
429 """Return a copy of this RequestsCookieJar."""
430 new_cj = RequestsCookieJar()
431 new_cj.set_policy(self.get_policy())
432 new_cj.update(self)
433 return new_cj
434
435 def get_policy(self):
436 """Return the CookiePolicy instance used."""
437 return self._policy
438
439
440 def _copy_cookie_jar(jar):
441 if jar is None:
442 return None
443
444 if hasattr(jar, "copy"):
445 # We're dealing with an instance of RequestsCookieJar
446 return jar.copy()
447 # We're dealing with a generic CookieJar instance
448 new_jar = copy.copy(jar)
449 new_jar.clear()
450 for cookie in jar:
451 new_jar.set_cookie(copy.copy(cookie))
452 return new_jar
453
454
455 def create_cookie(name, value, **kwargs):
456 """Make a cookie from underspecified parameters.
457
458 By default, the pair of `name` and `value` will be set for the domain ''
459 and sent on every request (this is sometimes called a "supercookie").
460 """
461 result = {
462 "version": 0,
463 "name": name,
464 "value": value,
465 "port": None,
466 "domain": "",
467 "path": "/",
468 "secure": False,
469 "expires": None,
470 "discard": True,
471 "comment": None,
472 "comment_url": None,
473 "rest": {"HttpOnly": None},
474 "rfc2109": False,
475 }
476
477 badargs = set(kwargs) - set(result)
478 if badargs:
479 raise TypeError(
480 f"create_cookie() got unexpected keyword arguments: {list(badargs)}"
481 )
482
483 result.update(kwargs)
484 result["port_specified"] = bool(result["port"])
485 result["domain_specified"] = bool(result["domain"])
486 result["domain_initial_dot"] = result["domain"].startswith(".")
487 result["path_specified"] = bool(result["path"])
488
489 return cookielib.Cookie(**result)
490
491
492 def morsel_to_cookie(morsel):
493 """Convert a Morsel object into a Cookie containing the one k/v pair."""
494
495 expires = None
496 if morsel["max-age"]:
497 try:
498 expires = int(time.time() + int(morsel["max-age"]))
499 except ValueError:
500 raise TypeError(f"max-age: {morsel['max-age']} must be integer")
501 elif morsel["expires"]:
502 time_template = "%a, %d-%b-%Y %H:%M:%S GMT"
503 expires = calendar.timegm(time.strptime(morsel["expires"], time_template))
504 return create_cookie(
505 comment=morsel["comment"],
506 comment_url=bool(morsel["comment"]),
507 discard=False,
508 domain=morsel["domain"],
509 expires=expires,
510 name=morsel.key,
511 path=morsel["path"],
512 port=None,
513 rest={"HttpOnly": morsel["httponly"]},
514 rfc2109=False,
515 secure=bool(morsel["secure"]),
516 value=morsel.value,
517 version=morsel["version"] or 0,
518 )
519
520
521 def cookiejar_from_dict(cookie_dict, cookiejar=None, overwrite=True):
522 """Returns a CookieJar from a key/value dictionary.
523
524 :param cookie_dict: Dict of key/values to insert into CookieJar.
525 :param cookiejar: (optional) A cookiejar to add the cookies to.
526 :param overwrite: (optional) If False, will not replace cookies
527 already in the jar with new ones.
528 :rtype: CookieJar
529 """
530 if cookiejar is None:
531 cookiejar = RequestsCookieJar()
532
533 if cookie_dict is not None:
534 names_from_jar = [cookie.name for cookie in cookiejar]
535 for name in cookie_dict:
536 if overwrite or (name not in names_from_jar):
537 cookiejar.set_cookie(create_cookie(name, cookie_dict[name]))
538
539 return cookiejar
540
541
542 def merge_cookies(cookiejar, cookies):
543 """Add cookies to cookiejar and returns a merged CookieJar.
544
545 :param cookiejar: CookieJar object to add the cookies to.
546 :param cookies: Dictionary or CookieJar object to be added.
547 :rtype: CookieJar
548 """
549 if not isinstance(cookiejar, cookielib.CookieJar):
550 raise ValueError("You can only merge into CookieJar")
551
552 if isinstance(cookies, dict):
553 cookiejar = cookiejar_from_dict(cookies, cookiejar=cookiejar, overwrite=False)
554 elif isinstance(cookies, cookielib.CookieJar):
555 try:
556 cookiejar.update(cookies)
557 except AttributeError:
558 for cookie_in_jar in cookies:
559 cookiejar.set_cookie(cookie_in_jar)
560
561 return cookiejar