mirror of
https://github.com/moparisthebest/SickRage
synced 2024-12-14 20:12:19 -05:00
05410e2aa0
Replaced urllib2 with requests for both TVDB and TVRage. Updated cache cleanup code to process both TVDB and TVRage cache folders.
572 lines
20 KiB
Python
572 lines
20 KiB
Python
# -*- coding: utf-8 -*-
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"""
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requests.session
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~~~~~~~~~~~~~~~~
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This module provides a Session object to manage and persist settings across
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requests (cookies, auth, proxies).
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"""
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import os
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from collections import Mapping
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from datetime import datetime
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from .compat import cookielib, OrderedDict, urljoin, urlparse, builtin_str
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from .cookies import (
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cookiejar_from_dict, extract_cookies_to_jar, RequestsCookieJar, merge_cookies)
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from .models import Request, PreparedRequest, DEFAULT_REDIRECT_LIMIT
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from .hooks import default_hooks, dispatch_hook
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from .utils import to_key_val_list, default_headers, to_native_string
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from .exceptions import TooManyRedirects, InvalidSchema
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from .structures import CaseInsensitiveDict
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from .adapters import HTTPAdapter
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from .utils import requote_uri, get_environ_proxies, get_netrc_auth
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from .status_codes import codes
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# formerly defined here, reexposed here for backward compatibility
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from .models import REDIRECT_STATI
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def merge_setting(request_setting, session_setting, dict_class=OrderedDict):
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"""
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Determines appropriate setting for a given request, taking into account the
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explicit setting on that request, and the setting in the session. If a
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setting is a dictionary, they will be merged together using `dict_class`
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"""
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if session_setting is None:
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return request_setting
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if request_setting is None:
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return session_setting
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# Bypass if not a dictionary (e.g. verify)
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if not (
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isinstance(session_setting, Mapping) and
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isinstance(request_setting, Mapping)
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):
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return request_setting
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merged_setting = dict_class(to_key_val_list(session_setting))
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merged_setting.update(to_key_val_list(request_setting))
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# Remove keys that are set to None.
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for (k, v) in request_setting.items():
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if v is None:
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del merged_setting[k]
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merged_setting = dict((k, v) for (k, v) in merged_setting.items() if v is not None)
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return merged_setting
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def merge_hooks(request_hooks, session_hooks, dict_class=OrderedDict):
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"""
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Properly merges both requests and session hooks.
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This is necessary because when request_hooks == {'response': []}, the
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merge breaks Session hooks entirely.
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"""
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if session_hooks is None or session_hooks.get('response') == []:
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return request_hooks
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if request_hooks is None or request_hooks.get('response') == []:
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return session_hooks
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return merge_setting(request_hooks, session_hooks, dict_class)
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class SessionRedirectMixin(object):
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def resolve_redirects(self, resp, req, stream=False, timeout=None,
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verify=True, cert=None, proxies=None):
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"""Receives a Response. Returns a generator of Responses."""
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i = 0
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while resp.is_redirect:
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prepared_request = req.copy()
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resp.content # Consume socket so it can be released
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if i >= self.max_redirects:
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raise TooManyRedirects('Exceeded %s redirects.' % self.max_redirects)
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# Release the connection back into the pool.
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resp.close()
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url = resp.headers['location']
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method = req.method
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# Handle redirection without scheme (see: RFC 1808 Section 4)
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if url.startswith('//'):
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parsed_rurl = urlparse(resp.url)
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url = '%s:%s' % (parsed_rurl.scheme, url)
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# The scheme should be lower case...
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parsed = urlparse(url)
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url = parsed.geturl()
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# Facilitate non-RFC2616-compliant 'location' headers
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# (e.g. '/path/to/resource' instead of 'http://domain.tld/path/to/resource')
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# Compliant with RFC3986, we percent encode the url.
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if not urlparse(url).netloc:
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url = urljoin(resp.url, requote_uri(url))
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else:
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url = requote_uri(url)
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prepared_request.url = to_native_string(url)
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# http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.4
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if (resp.status_code == codes.see_other and
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method != 'HEAD'):
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method = 'GET'
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# Do what the browsers do, despite standards...
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# First, turn 302s into GETs.
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if resp.status_code == codes.found and method != 'HEAD':
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method = 'GET'
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# Second, if a POST is responded to with a 301, turn it into a GET.
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# This bizarre behaviour is explained in Issue 1704.
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if resp.status_code == codes.moved and method == 'POST':
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method = 'GET'
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prepared_request.method = method
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# https://github.com/kennethreitz/requests/issues/1084
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if resp.status_code not in (codes.temporary, codes.resume):
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if 'Content-Length' in prepared_request.headers:
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del prepared_request.headers['Content-Length']
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prepared_request.body = None
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headers = prepared_request.headers
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try:
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del headers['Cookie']
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except KeyError:
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pass
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extract_cookies_to_jar(prepared_request._cookies, prepared_request, resp.raw)
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prepared_request._cookies.update(self.cookies)
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prepared_request.prepare_cookies(prepared_request._cookies)
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if 'Authorization' in headers:
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# If we get redirected to a new host, we should strip out any
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# authentication headers.
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original_parsed = urlparse(resp.request.url)
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redirect_parsed = urlparse(url)
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if (original_parsed.hostname != redirect_parsed.hostname):
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del headers['Authorization']
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# .netrc might have more auth for us.
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new_auth = get_netrc_auth(url) if self.trust_env else None
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if new_auth is not None:
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prepared_request.prepare_auth(new_auth)
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resp = self.send(
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prepared_request,
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stream=stream,
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timeout=timeout,
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verify=verify,
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cert=cert,
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proxies=proxies,
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allow_redirects=False,
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)
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extract_cookies_to_jar(self.cookies, prepared_request, resp.raw)
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i += 1
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yield resp
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class Session(SessionRedirectMixin):
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"""A Requests session.
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Provides cookie persistence, connection-pooling, and configuration.
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Basic Usage::
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>>> import requests
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>>> s = requests.Session()
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>>> s.get('http://httpbin.org/get')
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200
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"""
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__attrs__ = [
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'headers', 'cookies', 'auth', 'timeout', 'proxies', 'hooks',
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'params', 'verify', 'cert', 'prefetch', 'adapters', 'stream',
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'trust_env', 'max_redirects']
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def __init__(self):
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#: A case-insensitive dictionary of headers to be sent on each
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#: :class:`Request <Request>` sent from this
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#: :class:`Session <Session>`.
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self.headers = default_headers()
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#: Default Authentication tuple or object to attach to
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#: :class:`Request <Request>`.
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self.auth = None
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#: Dictionary mapping protocol to the URL of the proxy (e.g.
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#: {'http': 'foo.bar:3128'}) to be used on each
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#: :class:`Request <Request>`.
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self.proxies = {}
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#: Event-handling hooks.
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self.hooks = default_hooks()
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#: Dictionary of querystring data to attach to each
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#: :class:`Request <Request>`. The dictionary values may be lists for
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#: representing multivalued query parameters.
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self.params = {}
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#: Stream response content default.
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self.stream = False
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#: SSL Verification default.
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self.verify = True
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#: SSL certificate default.
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self.cert = None
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#: Maximum number of redirects allowed. If the request exceeds this
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#: limit, a :class:`TooManyRedirects` exception is raised.
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self.max_redirects = DEFAULT_REDIRECT_LIMIT
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#: Should we trust the environment?
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self.trust_env = True
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#: A CookieJar containing all currently outstanding cookies set on this
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#: session. By default it is a
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#: :class:`RequestsCookieJar <requests.cookies.RequestsCookieJar>`, but
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#: may be any other ``cookielib.CookieJar`` compatible object.
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self.cookies = cookiejar_from_dict({})
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# Default connection adapters.
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self.adapters = OrderedDict()
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self.mount('https://', HTTPAdapter())
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self.mount('http://', HTTPAdapter())
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def __enter__(self):
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return self
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def __exit__(self, *args):
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self.close()
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def prepare_request(self, request):
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"""Constructs a :class:`PreparedRequest <PreparedRequest>` for
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transmission and returns it. The :class:`PreparedRequest` has settings
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merged from the :class:`Request <Request>` instance and those of the
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:class:`Session`.
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:param request: :class:`Request` instance to prepare with this
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session's settings.
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"""
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cookies = request.cookies or {}
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# Bootstrap CookieJar.
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if not isinstance(cookies, cookielib.CookieJar):
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cookies = cookiejar_from_dict(cookies)
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# Merge with session cookies
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merged_cookies = merge_cookies(
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merge_cookies(RequestsCookieJar(), self.cookies), cookies)
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# Set environment's basic authentication if not explicitly set.
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auth = request.auth
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if self.trust_env and not auth and not self.auth:
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auth = get_netrc_auth(request.url)
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p = PreparedRequest()
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p.prepare(
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method=request.method.upper(),
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url=request.url,
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files=request.files,
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data=request.data,
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headers=merge_setting(request.headers, self.headers, dict_class=CaseInsensitiveDict),
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params=merge_setting(request.params, self.params),
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auth=merge_setting(auth, self.auth),
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cookies=merged_cookies,
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hooks=merge_hooks(request.hooks, self.hooks),
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)
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return p
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def request(self, method, url,
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params=None,
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data=None,
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headers=None,
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cookies=None,
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files=None,
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auth=None,
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timeout=None,
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allow_redirects=True,
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proxies=None,
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hooks=None,
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stream=None,
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verify=None,
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cert=None):
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"""Constructs a :class:`Request <Request>`, prepares it and sends it.
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Returns :class:`Response <Response>` object.
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:param method: method for the new :class:`Request` object.
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:param url: URL for the new :class:`Request` object.
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:param params: (optional) Dictionary or bytes to be sent in the query
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string for the :class:`Request`.
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:param data: (optional) Dictionary or bytes to send in the body of the
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:class:`Request`.
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:param headers: (optional) Dictionary of HTTP Headers to send with the
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:class:`Request`.
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:param cookies: (optional) Dict or CookieJar object to send with the
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:class:`Request`.
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:param files: (optional) Dictionary of 'filename': file-like-objects
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for multipart encoding upload.
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:param auth: (optional) Auth tuple or callable to enable
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Basic/Digest/Custom HTTP Auth.
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:param timeout: (optional) Float describing the timeout of the
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request in seconds.
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:param allow_redirects: (optional) Boolean. Set to True by default.
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:param proxies: (optional) Dictionary mapping protocol to the URL of
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the proxy.
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:param stream: (optional) whether to immediately download the response
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content. Defaults to ``False``.
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:param verify: (optional) if ``True``, the SSL cert will be verified.
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A CA_BUNDLE path can also be provided.
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:param cert: (optional) if String, path to ssl client cert file (.pem).
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If Tuple, ('cert', 'key') pair.
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"""
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method = builtin_str(method)
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# Create the Request.
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req = Request(
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method = method.upper(),
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url = url,
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headers = headers,
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files = files,
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data = data or {},
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params = params or {},
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auth = auth,
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cookies = cookies,
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hooks = hooks,
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)
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prep = self.prepare_request(req)
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proxies = proxies or {}
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# Gather clues from the surrounding environment.
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if self.trust_env:
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# Set environment's proxies.
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env_proxies = get_environ_proxies(url) or {}
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for (k, v) in env_proxies.items():
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proxies.setdefault(k, v)
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# Look for configuration.
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if not verify and verify is not False:
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verify = os.environ.get('REQUESTS_CA_BUNDLE')
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# Curl compatibility.
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if not verify and verify is not False:
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verify = os.environ.get('CURL_CA_BUNDLE')
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# Merge all the kwargs.
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proxies = merge_setting(proxies, self.proxies)
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stream = merge_setting(stream, self.stream)
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verify = merge_setting(verify, self.verify)
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cert = merge_setting(cert, self.cert)
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# Send the request.
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send_kwargs = {
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'stream': stream,
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'timeout': timeout,
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'verify': verify,
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'cert': cert,
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'proxies': proxies,
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'allow_redirects': allow_redirects,
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}
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resp = self.send(prep, **send_kwargs)
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return resp
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def get(self, url, **kwargs):
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"""Sends a GET request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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kwargs.setdefault('allow_redirects', True)
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return self.request('GET', url, **kwargs)
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def options(self, url, **kwargs):
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"""Sends a OPTIONS request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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kwargs.setdefault('allow_redirects', True)
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return self.request('OPTIONS', url, **kwargs)
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def head(self, url, **kwargs):
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"""Sends a HEAD request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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kwargs.setdefault('allow_redirects', False)
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return self.request('HEAD', url, **kwargs)
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def post(self, url, data=None, **kwargs):
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"""Sends a POST request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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return self.request('POST', url, data=data, **kwargs)
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def put(self, url, data=None, **kwargs):
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"""Sends a PUT request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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return self.request('PUT', url, data=data, **kwargs)
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def patch(self, url, data=None, **kwargs):
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"""Sends a PATCH request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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return self.request('PATCH', url, data=data, **kwargs)
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def delete(self, url, **kwargs):
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"""Sends a DELETE request. Returns :class:`Response` object.
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:param url: URL for the new :class:`Request` object.
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:param \*\*kwargs: Optional arguments that ``request`` takes.
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"""
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return self.request('DELETE', url, **kwargs)
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def send(self, request, **kwargs):
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"""Send a given PreparedRequest."""
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# Set defaults that the hooks can utilize to ensure they always have
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# the correct parameters to reproduce the previous request.
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kwargs.setdefault('stream', self.stream)
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kwargs.setdefault('verify', self.verify)
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kwargs.setdefault('cert', self.cert)
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kwargs.setdefault('proxies', self.proxies)
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# It's possible that users might accidentally send a Request object.
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# Guard against that specific failure case.
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if not isinstance(request, PreparedRequest):
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raise ValueError('You can only send PreparedRequests.')
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# Set up variables needed for resolve_redirects and dispatching of hooks
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allow_redirects = kwargs.pop('allow_redirects', True)
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stream = kwargs.get('stream')
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timeout = kwargs.get('timeout')
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verify = kwargs.get('verify')
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cert = kwargs.get('cert')
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proxies = kwargs.get('proxies')
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hooks = request.hooks
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# Get the appropriate adapter to use
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adapter = self.get_adapter(url=request.url)
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# Start time (approximately) of the request
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start = datetime.utcnow()
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# Send the request
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r = adapter.send(request, **kwargs)
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# Total elapsed time of the request (approximately)
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r.elapsed = datetime.utcnow() - start
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# Response manipulation hooks
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r = dispatch_hook('response', hooks, r, **kwargs)
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# Persist cookies
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if r.history:
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# If the hooks create history then we want those cookies too
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for resp in r.history:
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extract_cookies_to_jar(self.cookies, resp.request, resp.raw)
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extract_cookies_to_jar(self.cookies, request, r.raw)
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# Redirect resolving generator.
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gen = self.resolve_redirects(r, request,
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stream=stream,
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timeout=timeout,
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verify=verify,
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cert=cert,
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proxies=proxies)
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# Resolve redirects if allowed.
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history = [resp for resp in gen] if allow_redirects else []
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# Shuffle things around if there's history.
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if history:
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# Insert the first (original) request at the start
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history.insert(0, r)
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# Get the last request made
|
||
r = history.pop()
|
||
r.history = tuple(history)
|
||
|
||
return r
|
||
|
||
def get_adapter(self, url):
|
||
"""Returns the appropriate connnection adapter for the given URL."""
|
||
for (prefix, adapter) in self.adapters.items():
|
||
|
||
if url.lower().startswith(prefix):
|
||
return adapter
|
||
|
||
# Nothing matches :-/
|
||
raise InvalidSchema("No connection adapters were found for '%s'" % url)
|
||
|
||
def close(self):
|
||
"""Closes all adapters and as such the session"""
|
||
for v in self.adapters.values():
|
||
v.close()
|
||
|
||
def mount(self, prefix, adapter):
|
||
"""Registers a connection adapter to a prefix.
|
||
|
||
Adapters are sorted in descending order by key length."""
|
||
|
||
self.adapters[prefix] = adapter
|
||
keys_to_move = [k for k in self.adapters if len(k) < len(prefix)]
|
||
|
||
for key in keys_to_move:
|
||
self.adapters[key] = self.adapters.pop(key)
|
||
|
||
def __getstate__(self):
|
||
return dict((attr, getattr(self, attr, None)) for attr in self.__attrs__)
|
||
|
||
def __setstate__(self, state):
|
||
for attr, value in state.items():
|
||
setattr(self, attr, value)
|
||
|
||
|
||
def session():
|
||
"""Returns a :class:`Session` for context-management."""
|
||
|
||
return Session()
|