mirror of
https://github.com/SickGear/SickGear.git
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259 lines
8.6 KiB
Python
259 lines
8.6 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2019 Chris Caron <lead2gold@gmail.com>
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# All rights reserved.
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#
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# This code is licensed under the MIT License.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files(the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions :
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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import re
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import six
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import requests
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from .ConfigBase import ConfigBase
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from ..common import ConfigFormat
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from ..URLBase import PrivacyMode
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from ..AppriseLocale import gettext_lazy as _
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# Support TEXT formats
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# text/plain
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# text/html
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MIME_IS_TEXT = re.compile('text/(plain|html)', re.I)
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class ConfigHTTP(ConfigBase):
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"""
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A wrapper for HTTP based configuration sources
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"""
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# The default descriptive name associated with the service
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service_name = _('Web Based')
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# The default protocol
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protocol = 'http'
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# The default secure protocol
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secure_protocol = 'https'
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# The maximum number of seconds to wait for a connection to be established
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# before out-right just giving up
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connection_timeout_sec = 5.0
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# If an HTTP error occurs, define the number of characters you still want
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# to read back. This is useful for debugging purposes, but nothing else.
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# The idea behind enforcing this kind of restriction is to prevent abuse
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# from queries to services that may be untrusted.
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max_error_buffer_size = 2048
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def __init__(self, headers=None, **kwargs):
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"""
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Initialize HTTP Object
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headers can be a dictionary of key/value pairs that you want to
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additionally include as part of the server headers to post with
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"""
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super(ConfigHTTP, self).__init__(**kwargs)
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self.schema = 'https' if self.secure else 'http'
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self.fullpath = kwargs.get('fullpath')
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if not isinstance(self.fullpath, six.string_types):
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self.fullpath = '/'
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self.headers = {}
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if headers:
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# Store our extra headers
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self.headers.update(headers)
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return
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def url(self, privacy=False, *args, **kwargs):
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"""
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Returns the URL built dynamically based on specified arguments.
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"""
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# Prepare our cache value
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if isinstance(self.cache, bool) or not self.cache:
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cache = 'yes' if self.cache else 'no'
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else:
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cache = int(self.cache)
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# Define any arguments set
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args = {
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'verify': 'yes' if self.verify_certificate else 'no',
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'encoding': self.encoding,
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'cache': cache,
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}
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if self.config_format:
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# A format was enforced; make sure it's passed back with the url
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args['format'] = self.config_format
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# Append our headers into our args
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args.update({'+{}'.format(k): v for k, v in self.headers.items()})
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# Determine Authentication
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auth = ''
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if self.user and self.password:
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auth = '{user}:{password}@'.format(
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user=self.quote(self.user, safe=''),
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password=self.pprint(
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self.password, privacy, mode=PrivacyMode.Secret, safe=''),
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)
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elif self.user:
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auth = '{user}@'.format(
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user=self.quote(self.user, safe=''),
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)
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default_port = 443 if self.secure else 80
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return '{schema}://{auth}{hostname}{port}{fullpath}/?{args}'.format(
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schema=self.secure_protocol if self.secure else self.protocol,
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auth=auth,
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hostname=self.quote(self.host, safe=''),
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port='' if self.port is None or self.port == default_port
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else ':{}'.format(self.port),
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fullpath=self.quote(self.fullpath, safe='/'),
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args=self.urlencode(args),
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)
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def read(self, **kwargs):
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"""
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Perform retrieval of the configuration based on the specified request
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"""
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# prepare XML Object
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headers = {
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'User-Agent': self.app_id,
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}
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# Apply any/all header over-rides defined
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headers.update(self.headers)
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auth = None
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if self.user:
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auth = (self.user, self.password)
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url = '%s://%s' % (self.schema, self.host)
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if isinstance(self.port, int):
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url += ':%d' % self.port
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url += self.fullpath
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self.logger.debug('HTTP POST URL: %s (cert_verify=%r)' % (
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url, self.verify_certificate,
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))
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# Prepare our response object
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response = None
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# Where our request object will temporarily live.
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r = None
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# Always call throttle before any remote server i/o is made
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self.throttle()
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try:
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# Make our request
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with requests.post(
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url,
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headers=headers,
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auth=auth,
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verify=self.verify_certificate,
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timeout=self.connection_timeout_sec,
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stream=True) as r:
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# Handle Errors
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r.raise_for_status()
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# Get our file-size (if known)
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try:
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file_size = int(r.headers.get('Content-Length', '0'))
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except (TypeError, ValueError):
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# Handle edge case where Content-Length is a bad value
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file_size = 0
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# Store our response
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if self.max_buffer_size > 0 \
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and file_size > self.max_buffer_size:
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# Provide warning of data truncation
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self.logger.error(
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'HTTP config response exceeds maximum buffer length '
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'({}KB);'.format(int(self.max_buffer_size / 1024)))
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# Return None - buffer execeeded
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return None
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# Store our result (but no more than our buffer length)
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response = r.content[:self.max_buffer_size + 1]
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# Verify that our content did not exceed the buffer size:
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if len(response) > self.max_buffer_size:
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# Provide warning of data truncation
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self.logger.error(
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'HTTP config response exceeds maximum buffer length '
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'({}KB);'.format(int(self.max_buffer_size / 1024)))
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# Return None - buffer execeeded
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return None
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# Detect config format based on mime if the format isn't
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# already enforced
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content_type = r.headers.get(
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'Content-Type', 'application/octet-stream')
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if self.config_format is None and content_type:
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if MIME_IS_TEXT.match(content_type) is not None:
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# TEXT data detected based on header content
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self.default_config_format = ConfigFormat.TEXT
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except requests.RequestException as e:
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self.logger.error(
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'A Connection error occured retrieving HTTP '
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'configuration from %s.' % self.host)
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self.logger.debug('Socket Exception: %s' % str(e))
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# Return None (signifying a failure)
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return None
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# Return our response object
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return response
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@staticmethod
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def parse_url(url):
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"""
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Parses the URL and returns enough arguments that can allow
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us to substantiate this object.
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"""
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results = ConfigBase.parse_url(url)
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if not results:
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# We're done early as we couldn't load the results
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return results
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# Add our headers that the user can potentially over-ride if they wish
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# to to our returned result set
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results['headers'] = results['qsd-']
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results['headers'].update(results['qsd+'])
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return results
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