mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-16 01:45:08 +00:00
330 lines
12 KiB
Python
330 lines
12 KiB
Python
# -*- coding: utf-8 -*-
|
|
from __future__ import absolute_import, unicode_literals
|
|
|
|
try:
|
|
# noinspection PyProtectedMember
|
|
from base64 import encodebytes
|
|
except ImportError:
|
|
from base64 import encodestring as encodebytes
|
|
|
|
from datetime import datetime
|
|
from hashlib import sha256 as sha256
|
|
from hashlib import sha1 as sha
|
|
import hmac
|
|
import json
|
|
import requests
|
|
import tempfile
|
|
import time
|
|
|
|
import diskcache
|
|
from dateutil.parser import parse
|
|
from dateutil.tz import tzutc
|
|
from six.moves.urllib.parse import urlparse, parse_qs, quote
|
|
from six import string_types, text_type
|
|
|
|
from .constants import APP_KEY, HOST, USER_AGENT, BASE_URI
|
|
|
|
|
|
class ZuluHmacAuthV3HTTPHandler(object):
|
|
|
|
def __init__(self, host, secret_key, security_token, access_key):
|
|
self.secret_key = secret_key
|
|
self.host = host
|
|
self.security_token = security_token
|
|
self.access_key = access_key
|
|
self._hmac_256 = self._get_hmac(ignore=True)
|
|
|
|
def _get_hmac(self, ignore=False):
|
|
if ignore or self._hmac_256:
|
|
digestmod = sha256
|
|
else:
|
|
digestmod = sha
|
|
return hmac.new(self.secret_key.encode('utf-8'), digestmod=digestmod)
|
|
|
|
@staticmethod
|
|
def canonical_headers(headers_to_sign):
|
|
"""
|
|
Return the headers that need to be included in the StringToSign
|
|
in their canonical form by converting all header keys to lower
|
|
case, sorting them in alphabetical order and then joining
|
|
them into a string, separated by newlines.
|
|
"""
|
|
vals = sorted(['%s:%s' % (n.lower().strip(),
|
|
headers_to_sign[n].strip()) for n in headers_to_sign])
|
|
return '\n'.join(vals)
|
|
|
|
def headers_to_sign(self, http_request):
|
|
headers_to_sign = {'Host': self.host}
|
|
for name, value in http_request.headers.items():
|
|
lname = name.lower()
|
|
if lname.startswith('x-amz'):
|
|
headers_to_sign[name] = value
|
|
return headers_to_sign
|
|
|
|
def canonical_query_string(self, http_request):
|
|
if http_request.method == 'POST':
|
|
return ''
|
|
qs_parts = []
|
|
for param in sorted(http_request.params):
|
|
value = self.get_utf8_value(http_request.params[param])
|
|
param_ = quote(param, safe='-_.~')
|
|
value_ = quote(value, safe='-_.~')
|
|
qs_parts.append('{0}={1}'.format(param_, value_))
|
|
return '&'.join(qs_parts)
|
|
|
|
@staticmethod
|
|
def get_utf8_value(value):
|
|
if isinstance(value, bytes):
|
|
value.decode('utf-8')
|
|
return value
|
|
|
|
if not isinstance(value, string_types):
|
|
value = text_type(value)
|
|
|
|
if isinstance(value, text_type):
|
|
value = value.encode('utf-8')
|
|
|
|
return value
|
|
|
|
def string_to_sign(self, http_request):
|
|
headers_to_sign = self.headers_to_sign(http_request)
|
|
canonical_qs = self.canonical_query_string(http_request)
|
|
canonical_headers = self.canonical_headers(headers_to_sign)
|
|
string_to_sign = '\n'.join((
|
|
http_request.method,
|
|
http_request.path,
|
|
canonical_qs,
|
|
canonical_headers,
|
|
'',
|
|
http_request.body
|
|
))
|
|
return string_to_sign, headers_to_sign
|
|
|
|
def add_auth(self, req):
|
|
"""
|
|
Add AWS3 authentication to a request.
|
|
|
|
:type req: :class`boto.connection.HTTPRequest`
|
|
:param req: The HTTPRequest object.
|
|
"""
|
|
# This could be a retry. Make sure the previous
|
|
# authorization header is removed first.
|
|
if 'X-Amzn-Authorization' in req.headers:
|
|
del req.headers['X-Amzn-Authorization']
|
|
req.headers['X-Amz-Date'] = self.formatdate(usegmt=True)
|
|
if self.security_token:
|
|
req.headers['X-Amz-Security-Token'] = self.security_token
|
|
string_to_sign, headers_to_sign = self.string_to_sign(req)
|
|
# print('StringToSign:\n%s' % string_to_sign)
|
|
hash_value = sha256(string_to_sign.encode('utf-8')).digest()
|
|
b64_hmac = self.sign_string(hash_value)
|
|
s = "AWS3 AWSAccessKeyId=%s," % self.access_key
|
|
s += "Algorithm=%s," % self.algorithm()
|
|
s += "SignedHeaders=%s," % ';'.join(headers_to_sign)
|
|
s += "Signature=%s" % b64_hmac
|
|
req.headers['X-Amzn-Authorization'] = s
|
|
|
|
def sign_string(self, string_to_sign):
|
|
new_hmac = self._get_hmac()
|
|
new_hmac.update(string_to_sign)
|
|
return encodebytes(new_hmac.digest()).decode('utf-8').strip()
|
|
|
|
def algorithm(self):
|
|
if self._hmac_256:
|
|
return 'HmacSHA256'
|
|
return 'HmacSHA1'
|
|
|
|
@staticmethod
|
|
def formatdate(timeval=None, localtime=False, usegmt=False):
|
|
"""Returns a date string as specified by RFC 2822, e.g.:
|
|
|
|
Fri, 09 Nov 2001 01:08:47 -0000
|
|
|
|
Optional timeval if given is a floating point time value as accepted by
|
|
gmtime() and localtime(), otherwise the current time is used.
|
|
|
|
Optional localtime is a flag that when True, interprets timeval, and
|
|
returns a date relative to the local timezone instead of UTC, properly
|
|
taking daylight savings time into account.
|
|
|
|
Optional argument usegmt means that the timezone is written out as
|
|
an ascii string, not numeric one (so "GMT" instead of "+0000"). This
|
|
is needed for HTTP, and is only used when localtime==False.
|
|
"""
|
|
# Note: we cannot use strftime() because that honors the locale and RFC
|
|
# 2822 requires that day and month names be the English abbreviations.
|
|
if timeval is None:
|
|
timeval = time.time()
|
|
if localtime:
|
|
now = time.localtime(timeval)
|
|
# Calculate timezone offset, based on whether the local zone has
|
|
# daylight savings time, and whether DST is in effect.
|
|
if time.daylight and now[-1]:
|
|
offset = time.altzone
|
|
else:
|
|
offset = time.timezone
|
|
hours, minutes = divmod(abs(offset), 3600)
|
|
# Remember offset is in seconds west of UTC, but the timezone is in
|
|
# minutes east of UTC, so the signs differ.
|
|
if offset > 0:
|
|
sign = '-'
|
|
else:
|
|
sign = '+'
|
|
zone = '%s%02d%02d' % (sign, hours, minutes // 60)
|
|
else:
|
|
now = time.gmtime(timeval)
|
|
# Timezone offset is always -0000
|
|
if usegmt:
|
|
zone = 'GMT'
|
|
else:
|
|
zone = '-0000'
|
|
return '%s, %02d %s %04d %02d:%02d:%02d %s' % (
|
|
['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'][now[6]],
|
|
now[2],
|
|
['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
|
|
'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'][now[1] - 1],
|
|
now[0], now[3], now[4], now[5],
|
|
zone)
|
|
|
|
|
|
class HTTPRequest(object):
|
|
|
|
def __init__(self, method, protocol, host, port, path, auth_path, params, headers, body):
|
|
"""Represents an HTTP request.
|
|
|
|
:type method: string
|
|
:param method: The HTTP method name, 'GET', 'POST', 'PUT' etc.
|
|
|
|
:type protocol: string
|
|
:param protocol: The http protocol used, 'http' or 'https'.
|
|
|
|
:type host: string
|
|
:param host: Host to which the request is addressed. eg. abc.com
|
|
|
|
:type port: int
|
|
:param port: port on which the request is being sent. Zero means unset,
|
|
in which case default port will be chosen.
|
|
|
|
:type path: string
|
|
:param path: URL path that is being accessed.
|
|
|
|
:type auth_path: string or None
|
|
:param path: The part of the URL path used when creating the
|
|
authentication string.
|
|
|
|
:type params: dict
|
|
:param params: HTTP url query parameters, with key as name of
|
|
the param, and value as value of param.
|
|
|
|
:type headers: dict
|
|
:param headers: HTTP headers, with key as name of the header and value
|
|
as value of header.
|
|
|
|
:type body: string
|
|
:param body: Body of the HTTP request. If not present, will be None or
|
|
empty string ('').
|
|
"""
|
|
self.method = method
|
|
self.protocol = protocol
|
|
self.host = host
|
|
self.port = port
|
|
self.path = path
|
|
if auth_path is None:
|
|
auth_path = path
|
|
self.auth_path = auth_path
|
|
self.params = params
|
|
# chunked Transfer-Encoding should act only on PUT request.
|
|
if headers and 'Transfer-Encoding' in headers and \
|
|
headers['Transfer-Encoding'] == 'chunked' and \
|
|
self.method != 'PUT':
|
|
self.headers = headers.copy()
|
|
del self.headers['Transfer-Encoding']
|
|
else:
|
|
self.headers = headers
|
|
self.body = body
|
|
|
|
def __str__(self):
|
|
return (('method:(%s) protocol:(%s) host(%s) port(%s) path(%s) '
|
|
'params(%s) headers(%s) body(%s)')
|
|
% (self.method, self.protocol, self.host, self.port, self.path,
|
|
self.params, self.headers, self.body))
|
|
|
|
|
|
class Auth(object):
|
|
|
|
SOON_EXPIRES_SECONDS = 60
|
|
_CREDS_STORAGE_KEY = 'imdbpie-credentials'
|
|
|
|
def __init__(self):
|
|
self._cachedir = tempfile.gettempdir()
|
|
|
|
def _get_creds(self, retry=False):
|
|
with diskcache.Cache(directory=self._cachedir) as cache:
|
|
try:
|
|
return cache.get(self._CREDS_STORAGE_KEY)
|
|
except ValueError as e:
|
|
if not retry:
|
|
cache.close()
|
|
import encodingKludge as ek
|
|
import os
|
|
ek.ek(os.remove, ek.ek(os.path.join, self._cachedir, diskcache.core.DBNAME))
|
|
return self._get_creds(retry=True)
|
|
else:
|
|
raise e
|
|
|
|
def _set_creds(self, creds):
|
|
with diskcache.Cache(directory=self._cachedir) as cache:
|
|
cache[self._CREDS_STORAGE_KEY] = creds
|
|
return creds
|
|
|
|
def clear_cached_credentials(self):
|
|
with diskcache.Cache(directory=self._cachedir) as cache:
|
|
cache.delete(self._CREDS_STORAGE_KEY)
|
|
|
|
def _creds_soon_expiring(self):
|
|
creds = self._get_creds()
|
|
if not creds:
|
|
return creds, True
|
|
expires_at = parse(creds['expirationTimeStamp'])
|
|
now = datetime.now(tzutc())
|
|
if now < expires_at:
|
|
time_diff = expires_at - now
|
|
if time_diff.total_seconds() < self.SOON_EXPIRES_SECONDS:
|
|
# creds will soon expire, so renew them
|
|
return creds, True
|
|
return creds, False
|
|
else:
|
|
return creds, True
|
|
|
|
@staticmethod
|
|
def _get_credentials():
|
|
url = '{0}/authentication/credentials/temporary/ios82'.format(BASE_URI)
|
|
response = requests.post(
|
|
url, json={'appKey': APP_KEY}, headers={'User-Agent': USER_AGENT}
|
|
)
|
|
response.raise_for_status()
|
|
return json.loads(response.content.decode('utf8'))['resource']
|
|
|
|
def get_auth_headers(self, url_path):
|
|
creds, soon_expires = self._creds_soon_expiring()
|
|
if soon_expires:
|
|
creds = self._set_creds(creds=self._get_credentials())
|
|
|
|
handler = ZuluHmacAuthV3HTTPHandler(
|
|
host=HOST,
|
|
secret_key=creds['secretAccessKey'],
|
|
security_token=creds['sessionToken'], access_key=creds['accessKeyId']
|
|
)
|
|
parsed_url = urlparse(url_path)
|
|
params = {
|
|
key: val[0] for key, val in parse_qs(parsed_url.query).items()
|
|
}
|
|
request = HTTPRequest(
|
|
method='GET', protocol='https', host=HOST,
|
|
port=443, path=parsed_url.path, auth_path=None, params=params,
|
|
headers={'User-Agent': USER_AGENT}, body=''
|
|
)
|
|
handler.add_auth(req=request)
|
|
headers = request.headers
|
|
|
|
return headers
|