mirror of
https://github.com/moparisthebest/SickRage
synced 2024-11-13 21:05:11 -05:00
05410e2aa0
Replaced urllib2 with requests for both TVDB and TVRage. Updated cache cleanup code to process both TVDB and TVRage cache folders.
664 lines
19 KiB
Python
664 lines
19 KiB
Python
# -*- coding: utf-8 -*-
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"""
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requests.utils
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~~~~~~~~~~~~~~
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This module provides utility functions that are used within Requests
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that are also useful for external consumption.
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"""
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import cgi
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import codecs
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import collections
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import io
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import os
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import platform
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import re
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import sys
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import socket
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import struct
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from . import __version__
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from . import certs
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from .compat import parse_http_list as _parse_list_header
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from .compat import (quote, urlparse, bytes, str, OrderedDict, unquote, is_py2,
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builtin_str, getproxies, proxy_bypass)
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from .cookies import RequestsCookieJar, cookiejar_from_dict
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from .structures import CaseInsensitiveDict
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from .exceptions import MissingSchema, InvalidURL
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_hush_pyflakes = (RequestsCookieJar,)
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NETRC_FILES = ('.netrc', '_netrc')
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DEFAULT_CA_BUNDLE_PATH = certs.where()
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def dict_to_sequence(d):
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"""Returns an internal sequence dictionary update."""
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if hasattr(d, 'items'):
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d = d.items()
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return d
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def super_len(o):
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if hasattr(o, '__len__'):
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return len(o)
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if hasattr(o, 'len'):
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return o.len
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if hasattr(o, 'fileno'):
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try:
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fileno = o.fileno()
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except io.UnsupportedOperation:
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pass
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else:
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return os.fstat(fileno).st_size
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if hasattr(o, 'getvalue'):
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# e.g. BytesIO, cStringIO.StringI
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return len(o.getvalue())
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def get_netrc_auth(url):
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"""Returns the Requests tuple auth for a given url from netrc."""
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try:
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from netrc import netrc, NetrcParseError
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netrc_path = None
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for f in NETRC_FILES:
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try:
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loc = os.path.expanduser('~/{0}'.format(f))
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except KeyError:
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# os.path.expanduser can fail when $HOME is undefined and
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# getpwuid fails. See http://bugs.python.org/issue20164 &
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# https://github.com/kennethreitz/requests/issues/1846
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return
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if os.path.exists(loc):
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netrc_path = loc
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break
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# Abort early if there isn't one.
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if netrc_path is None:
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return
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ri = urlparse(url)
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# Strip port numbers from netloc
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host = ri.netloc.split(':')[0]
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try:
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_netrc = netrc(netrc_path).authenticators(host)
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if _netrc:
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# Return with login / password
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login_i = (0 if _netrc[0] else 1)
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return (_netrc[login_i], _netrc[2])
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except (NetrcParseError, IOError):
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# If there was a parsing error or a permissions issue reading the file,
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# we'll just skip netrc auth
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pass
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# AppEngine hackiness.
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except (ImportError, AttributeError):
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pass
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def guess_filename(obj):
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"""Tries to guess the filename of the given object."""
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name = getattr(obj, 'name', None)
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if name and name[0] != '<' and name[-1] != '>':
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return os.path.basename(name)
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def from_key_val_list(value):
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"""Take an object and test to see if it can be represented as a
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dictionary. Unless it can not be represented as such, return an
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OrderedDict, e.g.,
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::
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>>> from_key_val_list([('key', 'val')])
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OrderedDict([('key', 'val')])
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>>> from_key_val_list('string')
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ValueError: need more than 1 value to unpack
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>>> from_key_val_list({'key': 'val'})
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OrderedDict([('key', 'val')])
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"""
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if value is None:
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return None
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if isinstance(value, (str, bytes, bool, int)):
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raise ValueError('cannot encode objects that are not 2-tuples')
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return OrderedDict(value)
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def to_key_val_list(value):
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"""Take an object and test to see if it can be represented as a
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dictionary. If it can be, return a list of tuples, e.g.,
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::
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>>> to_key_val_list([('key', 'val')])
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[('key', 'val')]
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>>> to_key_val_list({'key': 'val'})
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[('key', 'val')]
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>>> to_key_val_list('string')
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ValueError: cannot encode objects that are not 2-tuples.
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"""
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if value is None:
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return None
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if isinstance(value, (str, bytes, bool, int)):
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raise ValueError('cannot encode objects that are not 2-tuples')
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if isinstance(value, collections.Mapping):
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value = value.items()
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return list(value)
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# From mitsuhiko/werkzeug (used with permission).
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def parse_list_header(value):
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"""Parse lists as described by RFC 2068 Section 2.
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In particular, parse comma-separated lists where the elements of
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the list may include quoted-strings. A quoted-string could
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contain a comma. A non-quoted string could have quotes in the
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middle. Quotes are removed automatically after parsing.
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It basically works like :func:`parse_set_header` just that items
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may appear multiple times and case sensitivity is preserved.
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The return value is a standard :class:`list`:
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>>> parse_list_header('token, "quoted value"')
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['token', 'quoted value']
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To create a header from the :class:`list` again, use the
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:func:`dump_header` function.
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:param value: a string with a list header.
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:return: :class:`list`
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"""
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result = []
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for item in _parse_list_header(value):
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if item[:1] == item[-1:] == '"':
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item = unquote_header_value(item[1:-1])
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result.append(item)
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return result
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# From mitsuhiko/werkzeug (used with permission).
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def parse_dict_header(value):
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"""Parse lists of key, value pairs as described by RFC 2068 Section 2 and
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convert them into a python dict:
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>>> d = parse_dict_header('foo="is a fish", bar="as well"')
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>>> type(d) is dict
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True
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>>> sorted(d.items())
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[('bar', 'as well'), ('foo', 'is a fish')]
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If there is no value for a key it will be `None`:
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>>> parse_dict_header('key_without_value')
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{'key_without_value': None}
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To create a header from the :class:`dict` again, use the
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:func:`dump_header` function.
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:param value: a string with a dict header.
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:return: :class:`dict`
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"""
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result = {}
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for item in _parse_list_header(value):
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if '=' not in item:
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result[item] = None
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continue
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name, value = item.split('=', 1)
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if value[:1] == value[-1:] == '"':
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value = unquote_header_value(value[1:-1])
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result[name] = value
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return result
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# From mitsuhiko/werkzeug (used with permission).
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def unquote_header_value(value, is_filename=False):
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r"""Unquotes a header value. (Reversal of :func:`quote_header_value`).
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This does not use the real unquoting but what browsers are actually
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using for quoting.
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:param value: the header value to unquote.
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"""
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if value and value[0] == value[-1] == '"':
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# this is not the real unquoting, but fixing this so that the
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# RFC is met will result in bugs with internet explorer and
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# probably some other browsers as well. IE for example is
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# uploading files with "C:\foo\bar.txt" as filename
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value = value[1:-1]
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# if this is a filename and the starting characters look like
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# a UNC path, then just return the value without quotes. Using the
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# replace sequence below on a UNC path has the effect of turning
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# the leading double slash into a single slash and then
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# _fix_ie_filename() doesn't work correctly. See #458.
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if not is_filename or value[:2] != '\\\\':
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return value.replace('\\\\', '\\').replace('\\"', '"')
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return value
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def dict_from_cookiejar(cj):
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"""Returns a key/value dictionary from a CookieJar.
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:param cj: CookieJar object to extract cookies from.
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"""
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cookie_dict = {}
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for cookie in cj:
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cookie_dict[cookie.name] = cookie.value
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return cookie_dict
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def add_dict_to_cookiejar(cj, cookie_dict):
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"""Returns a CookieJar from a key/value dictionary.
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:param cj: CookieJar to insert cookies into.
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:param cookie_dict: Dict of key/values to insert into CookieJar.
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"""
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cj2 = cookiejar_from_dict(cookie_dict)
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cj.update(cj2)
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return cj
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def get_encodings_from_content(content):
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"""Returns encodings from given content string.
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:param content: bytestring to extract encodings from.
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"""
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charset_re = re.compile(r'<meta.*?charset=["\']*(.+?)["\'>]', flags=re.I)
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pragma_re = re.compile(r'<meta.*?content=["\']*;?charset=(.+?)["\'>]', flags=re.I)
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xml_re = re.compile(r'^<\?xml.*?encoding=["\']*(.+?)["\'>]')
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return (charset_re.findall(content) +
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pragma_re.findall(content) +
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xml_re.findall(content))
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def get_encoding_from_headers(headers):
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"""Returns encodings from given HTTP Header Dict.
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:param headers: dictionary to extract encoding from.
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"""
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content_type = headers.get('content-type')
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if not content_type:
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return None
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content_type, params = cgi.parse_header(content_type)
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if 'charset' in params:
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return params['charset'].strip("'\"")
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if 'text' in content_type:
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return 'ISO-8859-1'
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def stream_decode_response_unicode(iterator, r):
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"""Stream decodes a iterator."""
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if r.encoding is None:
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for item in iterator:
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yield item
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return
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decoder = codecs.getincrementaldecoder(r.encoding)(errors='replace')
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for chunk in iterator:
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rv = decoder.decode(chunk)
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if rv:
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yield rv
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rv = decoder.decode(b'', final=True)
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if rv:
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yield rv
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def iter_slices(string, slice_length):
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"""Iterate over slices of a string."""
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pos = 0
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while pos < len(string):
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yield string[pos:pos + slice_length]
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pos += slice_length
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def get_unicode_from_response(r):
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"""Returns the requested content back in unicode.
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:param r: Response object to get unicode content from.
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Tried:
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1. charset from content-type
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2. every encodings from ``<meta ... charset=XXX>``
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3. fall back and replace all unicode characters
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"""
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tried_encodings = []
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# Try charset from content-type
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encoding = get_encoding_from_headers(r.headers)
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if encoding:
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try:
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return str(r.content, encoding)
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except UnicodeError:
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tried_encodings.append(encoding)
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# Fall back:
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try:
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return str(r.content, encoding, errors='replace')
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except TypeError:
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return r.content
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# The unreserved URI characters (RFC 3986)
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UNRESERVED_SET = frozenset(
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
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+ "0123456789-._~")
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def unquote_unreserved(uri):
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"""Un-escape any percent-escape sequences in a URI that are unreserved
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characters. This leaves all reserved, illegal and non-ASCII bytes encoded.
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"""
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parts = uri.split('%')
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for i in range(1, len(parts)):
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h = parts[i][0:2]
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if len(h) == 2 and h.isalnum():
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try:
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c = chr(int(h, 16))
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except ValueError:
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raise InvalidURL("Invalid percent-escape sequence: '%s'" % h)
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if c in UNRESERVED_SET:
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parts[i] = c + parts[i][2:]
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else:
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parts[i] = '%' + parts[i]
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else:
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parts[i] = '%' + parts[i]
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return ''.join(parts)
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def requote_uri(uri):
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"""Re-quote the given URI.
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This function passes the given URI through an unquote/quote cycle to
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ensure that it is fully and consistently quoted.
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"""
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# Unquote only the unreserved characters
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# Then quote only illegal characters (do not quote reserved, unreserved,
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# or '%')
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return quote(unquote_unreserved(uri), safe="!#$%&'()*+,/:;=?@[]~")
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def address_in_network(ip, net):
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"""
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This function allows you to check if on IP belongs to a network subnet
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Example: returns True if ip = 192.168.1.1 and net = 192.168.1.0/24
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returns False if ip = 192.168.1.1 and net = 192.168.100.0/24
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"""
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ipaddr = struct.unpack('=L', socket.inet_aton(ip))[0]
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netaddr, bits = net.split('/')
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netmask = struct.unpack('=L', socket.inet_aton(dotted_netmask(int(bits))))[0]
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network = struct.unpack('=L', socket.inet_aton(netaddr))[0] & netmask
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return (ipaddr & netmask) == (network & netmask)
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|
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def dotted_netmask(mask):
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"""
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Converts mask from /xx format to xxx.xxx.xxx.xxx
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Example: if mask is 24 function returns 255.255.255.0
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"""
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bits = 0xffffffff ^ (1 << 32 - mask) - 1
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return socket.inet_ntoa(struct.pack('>I', bits))
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|
|
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def is_ipv4_address(string_ip):
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try:
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socket.inet_aton(string_ip)
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except socket.error:
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return False
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return True
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|
|
|
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def is_valid_cidr(string_network):
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"""Very simple check of the cidr format in no_proxy variable"""
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if string_network.count('/') == 1:
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try:
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mask = int(string_network.split('/')[1])
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except ValueError:
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return False
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|
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if mask < 1 or mask > 32:
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return False
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try:
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socket.inet_aton(string_network.split('/')[0])
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except socket.error:
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return False
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else:
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return False
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return True
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|
|
|
|
|
def get_environ_proxies(url):
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"""Return a dict of environment proxies."""
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|
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get_proxy = lambda k: os.environ.get(k) or os.environ.get(k.upper())
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# First check whether no_proxy is defined. If it is, check that the URL
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# we're getting isn't in the no_proxy list.
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no_proxy = get_proxy('no_proxy')
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netloc = urlparse(url).netloc
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|
|
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if no_proxy:
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# We need to check whether we match here. We need to see if we match
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# the end of the netloc, both with and without the port.
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no_proxy = no_proxy.replace(' ', '').split(',')
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|
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ip = netloc.split(':')[0]
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if is_ipv4_address(ip):
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for proxy_ip in no_proxy:
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if is_valid_cidr(proxy_ip):
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if address_in_network(ip, proxy_ip):
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return {}
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else:
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for host in no_proxy:
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if netloc.endswith(host) or netloc.split(':')[0].endswith(host):
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# The URL does match something in no_proxy, so we don't want
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# to apply the proxies on this URL.
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return {}
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|
|
|
# If the system proxy settings indicate that this URL should be bypassed,
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# don't proxy.
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# The proxy_bypass function is incredibly buggy on OS X in early versions
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|
# of Python 2.6, so allow this call to fail. Only catch the specific
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|
# exceptions we've seen, though: this call failing in other ways can reveal
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# legitimate problems.
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try:
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bypass = proxy_bypass(netloc)
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|
except (TypeError, socket.gaierror):
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bypass = False
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|
|
if bypass:
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return {}
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|
|
# If we get here, we either didn't have no_proxy set or we're not going
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|
# anywhere that no_proxy applies to, and the system settings don't require
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# bypassing the proxy for the current URL.
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return getproxies()
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|
|
|
|
def default_user_agent(name="python-requests"):
|
|
"""Return a string representing the default user agent."""
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|
_implementation = platform.python_implementation()
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|
|
|
if _implementation == 'CPython':
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_implementation_version = platform.python_version()
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|
elif _implementation == 'PyPy':
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_implementation_version = '%s.%s.%s' % (sys.pypy_version_info.major,
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sys.pypy_version_info.minor,
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sys.pypy_version_info.micro)
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if sys.pypy_version_info.releaselevel != 'final':
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_implementation_version = ''.join([_implementation_version, sys.pypy_version_info.releaselevel])
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elif _implementation == 'Jython':
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|
_implementation_version = platform.python_version() # Complete Guess
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|
elif _implementation == 'IronPython':
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|
_implementation_version = platform.python_version() # Complete Guess
|
|
else:
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_implementation_version = 'Unknown'
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|
|
|
try:
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p_system = platform.system()
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|
p_release = platform.release()
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except IOError:
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|
p_system = 'Unknown'
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p_release = 'Unknown'
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|
|
|
return " ".join(['%s/%s' % (name, __version__),
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'%s/%s' % (_implementation, _implementation_version),
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|
'%s/%s' % (p_system, p_release)])
|
|
|
|
|
|
def default_headers():
|
|
return CaseInsensitiveDict({
|
|
'User-Agent': default_user_agent(),
|
|
'Accept-Encoding': ', '.join(('gzip', 'deflate')),
|
|
'Accept': '*/*'
|
|
})
|
|
|
|
|
|
def parse_header_links(value):
|
|
"""Return a dict of parsed link headers proxies.
|
|
|
|
i.e. Link: <http:/.../front.jpeg>; rel=front; type="image/jpeg",<http://.../back.jpeg>; rel=back;type="image/jpeg"
|
|
|
|
"""
|
|
|
|
links = []
|
|
|
|
replace_chars = " '\""
|
|
|
|
for val in value.split(","):
|
|
try:
|
|
url, params = val.split(";", 1)
|
|
except ValueError:
|
|
url, params = val, ''
|
|
|
|
link = {}
|
|
|
|
link["url"] = url.strip("<> '\"")
|
|
|
|
for param in params.split(";"):
|
|
try:
|
|
key, value = param.split("=")
|
|
except ValueError:
|
|
break
|
|
|
|
link[key.strip(replace_chars)] = value.strip(replace_chars)
|
|
|
|
links.append(link)
|
|
|
|
return links
|
|
|
|
|
|
# Null bytes; no need to recreate these on each call to guess_json_utf
|
|
_null = '\x00'.encode('ascii') # encoding to ASCII for Python 3
|
|
_null2 = _null * 2
|
|
_null3 = _null * 3
|
|
|
|
|
|
def guess_json_utf(data):
|
|
# JSON always starts with two ASCII characters, so detection is as
|
|
# easy as counting the nulls and from their location and count
|
|
# determine the encoding. Also detect a BOM, if present.
|
|
sample = data[:4]
|
|
if sample in (codecs.BOM_UTF32_LE, codecs.BOM32_BE):
|
|
return 'utf-32' # BOM included
|
|
if sample[:3] == codecs.BOM_UTF8:
|
|
return 'utf-8-sig' # BOM included, MS style (discouraged)
|
|
if sample[:2] in (codecs.BOM_UTF16_LE, codecs.BOM_UTF16_BE):
|
|
return 'utf-16' # BOM included
|
|
nullcount = sample.count(_null)
|
|
if nullcount == 0:
|
|
return 'utf-8'
|
|
if nullcount == 2:
|
|
if sample[::2] == _null2: # 1st and 3rd are null
|
|
return 'utf-16-be'
|
|
if sample[1::2] == _null2: # 2nd and 4th are null
|
|
return 'utf-16-le'
|
|
# Did not detect 2 valid UTF-16 ascii-range characters
|
|
if nullcount == 3:
|
|
if sample[:3] == _null3:
|
|
return 'utf-32-be'
|
|
if sample[1:] == _null3:
|
|
return 'utf-32-le'
|
|
# Did not detect a valid UTF-32 ascii-range character
|
|
return None
|
|
|
|
|
|
def except_on_missing_scheme(url):
|
|
"""Given a URL, raise a MissingSchema exception if the scheme is missing.
|
|
"""
|
|
scheme, netloc, path, params, query, fragment = urlparse(url)
|
|
|
|
if not scheme:
|
|
raise MissingSchema('Proxy URLs must have explicit schemes.')
|
|
|
|
|
|
def get_auth_from_url(url):
|
|
"""Given a url with authentication components, extract them into a tuple of
|
|
username,password."""
|
|
parsed = urlparse(url)
|
|
|
|
try:
|
|
auth = (unquote(parsed.username), unquote(parsed.password))
|
|
except (AttributeError, TypeError):
|
|
auth = ('', '')
|
|
|
|
return auth
|
|
|
|
|
|
def to_native_string(string, encoding='ascii'):
|
|
"""
|
|
Given a string object, regardless of type, returns a representation of that
|
|
string in the native string type, encoding and decoding where necessary.
|
|
This assumes ASCII unless told otherwise.
|
|
"""
|
|
out = None
|
|
|
|
if isinstance(string, builtin_str):
|
|
out = string
|
|
else:
|
|
if is_py2:
|
|
out = string.encode(encoding)
|
|
else:
|
|
out = string.decode(encoding)
|
|
|
|
return out
|