mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-22 04:45:05 +00:00
375 lines
13 KiB
Python
375 lines
13 KiB
Python
# -*- coding: utf-8 -*-
|
|
# BSD 2-Clause License
|
|
#
|
|
# Apprise - Push Notification Library.
|
|
# Copyright (c) 2024, Chris Caron <lead2gold@gmail.com>
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
#
|
|
# 1. Redistributions of source code must retain the above copyright notice,
|
|
# this list of conditions and the following disclaimer.
|
|
#
|
|
# 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
# this list of conditions and the following disclaimer in the documentation
|
|
# and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
|
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
# POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
import re
|
|
import os
|
|
import requests
|
|
import threading
|
|
from tempfile import NamedTemporaryFile
|
|
from .base import AttachBase
|
|
from ..common import ContentLocation
|
|
from ..url import PrivacyMode
|
|
from ..locale import gettext_lazy as _
|
|
|
|
|
|
class AttachHTTP(AttachBase):
|
|
"""
|
|
A wrapper for HTTP based attachment sources
|
|
"""
|
|
|
|
# The default descriptive name associated with the service
|
|
service_name = _('Web Based')
|
|
|
|
# The default protocol
|
|
protocol = 'http'
|
|
|
|
# The default secure protocol
|
|
secure_protocol = 'https'
|
|
|
|
# The number of bytes in memory to read from the remote source at a time
|
|
chunk_size = 8192
|
|
|
|
# Web based requests are remote/external to our current location
|
|
location = ContentLocation.HOSTED
|
|
|
|
# thread safe loading
|
|
_lock = threading.Lock()
|
|
|
|
def __init__(self, headers=None, **kwargs):
|
|
"""
|
|
Initialize HTTP Object
|
|
|
|
headers can be a dictionary of key/value pairs that you want to
|
|
additionally include as part of the server headers to post with
|
|
|
|
"""
|
|
super().__init__(**kwargs)
|
|
|
|
self.schema = 'https' if self.secure else 'http'
|
|
|
|
self.fullpath = kwargs.get('fullpath')
|
|
if not isinstance(self.fullpath, str):
|
|
self.fullpath = '/'
|
|
|
|
self.headers = {}
|
|
if headers:
|
|
# Store our extra headers
|
|
self.headers.update(headers)
|
|
|
|
# Where our content is written to upon a call to download.
|
|
self._temp_file = None
|
|
|
|
# Our Query String Dictionary; we use this to track arguments
|
|
# specified that aren't otherwise part of this class
|
|
self.qsd = {k: v for k, v in kwargs.get('qsd', {}).items()
|
|
if k not in self.template_args}
|
|
|
|
return
|
|
|
|
def download(self, **kwargs):
|
|
"""
|
|
Perform retrieval of the configuration based on the specified request
|
|
"""
|
|
|
|
if self.location == ContentLocation.INACCESSIBLE:
|
|
# our content is inaccessible
|
|
return False
|
|
|
|
# prepare header
|
|
headers = {
|
|
'User-Agent': self.app_id,
|
|
}
|
|
|
|
# Apply any/all header over-rides defined
|
|
headers.update(self.headers)
|
|
|
|
auth = None
|
|
if self.user:
|
|
auth = (self.user, self.password)
|
|
|
|
url = '%s://%s' % (self.schema, self.host)
|
|
if isinstance(self.port, int):
|
|
url += ':%d' % self.port
|
|
|
|
url += self.fullpath
|
|
|
|
# Where our request object will temporarily live.
|
|
r = None
|
|
|
|
# Always call throttle before any remote server i/o is made
|
|
self.throttle()
|
|
|
|
with self._lock:
|
|
if self.exists(retrieve_if_missing=False):
|
|
# Due to locking; it's possible a concurrent thread already
|
|
# handled the retrieval in which case we can safely move on
|
|
self.logger.trace(
|
|
'HTTP Attachment %s already retrieved',
|
|
self._temp_file.name)
|
|
return True
|
|
|
|
# Ensure any existing content set has been invalidated
|
|
self.invalidate()
|
|
|
|
self.logger.debug(
|
|
'HTTP Attachment Fetch URL: %s (cert_verify=%r)' % (
|
|
url, self.verify_certificate))
|
|
|
|
try:
|
|
# Make our request
|
|
with requests.get(
|
|
url,
|
|
headers=headers,
|
|
auth=auth,
|
|
params=self.qsd,
|
|
verify=self.verify_certificate,
|
|
timeout=self.request_timeout,
|
|
stream=True) as r:
|
|
|
|
# Handle Errors
|
|
r.raise_for_status()
|
|
|
|
# Get our file-size (if known)
|
|
try:
|
|
file_size = int(r.headers.get('Content-Length', '0'))
|
|
except (TypeError, ValueError):
|
|
# Handle edge case where Content-Length is a bad value
|
|
file_size = 0
|
|
|
|
# Perform a little Q/A on file limitations and restrictions
|
|
if self.max_file_size > 0 and \
|
|
file_size > self.max_file_size:
|
|
|
|
# The content retrieved is to large
|
|
self.logger.error(
|
|
'HTTP response exceeds allowable maximum file '
|
|
'length ({}KB): {}'.format(
|
|
int(self.max_file_size / 1024),
|
|
self.url(privacy=True)))
|
|
|
|
# Return False (signifying a failure)
|
|
return False
|
|
|
|
# Detect config format based on mime if the format isn't
|
|
# already enforced
|
|
self.detected_mimetype = r.headers.get('Content-Type')
|
|
|
|
d = r.headers.get('Content-Disposition', '')
|
|
result = re.search(
|
|
"filename=['\"]?(?P<name>[^'\"]+)['\"]?", d, re.I)
|
|
if result:
|
|
self.detected_name = result.group('name').strip()
|
|
|
|
# Create a temporary file to work with; delete must be set
|
|
# to False or it isn't compatible with Microsoft Windows
|
|
# instances. In lieu of this, __del__ will clean up the
|
|
# file for us.
|
|
self._temp_file = NamedTemporaryFile(delete=False)
|
|
|
|
# Get our chunk size
|
|
chunk_size = self.chunk_size
|
|
|
|
# Track all bytes written to disk
|
|
bytes_written = 0
|
|
|
|
# If we get here, we can now safely write our content to
|
|
# disk
|
|
for chunk in r.iter_content(chunk_size=chunk_size):
|
|
# filter out keep-alive chunks
|
|
if chunk:
|
|
self._temp_file.write(chunk)
|
|
bytes_written = self._temp_file.tell()
|
|
|
|
# Prevent a case where Content-Length isn't
|
|
# provided. In this case we don't want to fetch
|
|
# beyond our limits
|
|
if self.max_file_size > 0:
|
|
if bytes_written > self.max_file_size:
|
|
# The content retrieved is to large
|
|
self.logger.error(
|
|
'HTTP response exceeds allowable '
|
|
'maximum file length '
|
|
'({}KB): {}'.format(
|
|
int(self.max_file_size / 1024),
|
|
self.url(privacy=True)))
|
|
|
|
# Invalidate any variables previously set
|
|
self.invalidate()
|
|
|
|
# Return False (signifying a failure)
|
|
return False
|
|
|
|
elif bytes_written + chunk_size \
|
|
> self.max_file_size:
|
|
# Adjust out next read to accomodate up to
|
|
# our limit +1. This will prevent us from
|
|
# reading to much into our memory buffer
|
|
self.max_file_size - bytes_written + 1
|
|
|
|
# Ensure our content is flushed to disk for post-processing
|
|
self._temp_file.flush()
|
|
|
|
# Set our minimum requirements for a successful download()
|
|
# call
|
|
self.download_path = self._temp_file.name
|
|
if not self.detected_name:
|
|
self.detected_name = os.path.basename(self.fullpath)
|
|
|
|
except requests.RequestException as e:
|
|
self.logger.error(
|
|
'A Connection error occurred retrieving HTTP '
|
|
'configuration from %s.' % self.host)
|
|
self.logger.debug('Socket Exception: %s' % str(e))
|
|
|
|
# Invalidate any variables previously set
|
|
self.invalidate()
|
|
|
|
# Return False (signifying a failure)
|
|
return False
|
|
|
|
except (IOError, OSError):
|
|
# IOError is present for backwards compatibility with Python
|
|
# versions older then 3.3. >= 3.3 throw OSError now.
|
|
|
|
# Could not open and/or write the temporary file
|
|
self.logger.error(
|
|
'Could not write attachment to disk: {}'.format(
|
|
self.url(privacy=True)))
|
|
|
|
# Invalidate any variables previously set
|
|
self.invalidate()
|
|
|
|
# Return False (signifying a failure)
|
|
return False
|
|
|
|
# Return our success
|
|
return True
|
|
|
|
def invalidate(self):
|
|
"""
|
|
Close our temporary file
|
|
"""
|
|
if self._temp_file:
|
|
self.logger.trace(
|
|
'Attachment cleanup of %s', self._temp_file.name)
|
|
self._temp_file.close()
|
|
|
|
try:
|
|
# Ensure our file is removed (if it exists)
|
|
os.unlink(self._temp_file.name)
|
|
|
|
except OSError:
|
|
pass
|
|
|
|
# Reset our temporary file to prevent from entering
|
|
# this block again
|
|
self._temp_file = None
|
|
|
|
super().invalidate()
|
|
|
|
def __del__(self):
|
|
"""
|
|
Tidy memory if open
|
|
"""
|
|
self.invalidate()
|
|
|
|
def url(self, privacy=False, *args, **kwargs):
|
|
"""
|
|
Returns the URL built dynamically based on specified arguments.
|
|
"""
|
|
|
|
# Our URL parameters
|
|
params = self.url_parameters(privacy=privacy, *args, **kwargs)
|
|
|
|
# Prepare our cache value
|
|
if self.cache is not None:
|
|
if isinstance(self.cache, bool) or not self.cache:
|
|
cache = 'yes' if self.cache else 'no'
|
|
else:
|
|
cache = int(self.cache)
|
|
|
|
# Set our cache value
|
|
params['cache'] = cache
|
|
|
|
if self._mimetype:
|
|
# A format was enforced
|
|
params['mime'] = self._mimetype
|
|
|
|
if self._name:
|
|
# A name was enforced
|
|
params['name'] = self._name
|
|
|
|
# Append our headers into our parameters
|
|
params.update({'+{}'.format(k): v for k, v in self.headers.items()})
|
|
|
|
# Apply any remaining entries to our URL
|
|
params.update(self.qsd)
|
|
|
|
# Determine Authentication
|
|
auth = ''
|
|
if self.user and self.password:
|
|
auth = '{user}:{password}@'.format(
|
|
user=self.quote(self.user, safe=''),
|
|
password=self.pprint(
|
|
self.password, privacy, mode=PrivacyMode.Secret, safe=''),
|
|
)
|
|
elif self.user:
|
|
auth = '{user}@'.format(
|
|
user=self.quote(self.user, safe=''),
|
|
)
|
|
|
|
default_port = 443 if self.secure else 80
|
|
|
|
return '{schema}://{auth}{hostname}{port}{fullpath}?{params}'.format(
|
|
schema=self.secure_protocol if self.secure else self.protocol,
|
|
auth=auth,
|
|
hostname=self.quote(self.host, safe=''),
|
|
port='' if self.port is None or self.port == default_port
|
|
else ':{}'.format(self.port),
|
|
fullpath=self.quote(self.fullpath, safe='/'),
|
|
params=self.urlencode(params, safe='/'),
|
|
)
|
|
|
|
@staticmethod
|
|
def parse_url(url):
|
|
"""
|
|
Parses the URL and returns enough arguments that can allow
|
|
us to re-instantiate this object.
|
|
|
|
"""
|
|
results = AttachBase.parse_url(url, sanitize=False)
|
|
if not results:
|
|
# We're done early as we couldn't load the results
|
|
return results
|
|
|
|
# Add our headers that the user can potentially over-ride if they wish
|
|
# to to our returned result set
|
|
results['headers'] = results['qsd-']
|
|
results['headers'].update(results['qsd+'])
|
|
|
|
return results
|