2019-06-07 11:16:07 +00:00
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# -*- 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 os
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import re
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import six
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2019-09-23 20:21:24 +00:00
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try:
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import yaml
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except ImportError:
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if six.PY3:
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import yaml3 as yaml
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else:
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import yaml2 as yaml
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2019-06-07 11:16:07 +00:00
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from .. import plugins
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from ..AppriseAsset import AppriseAsset
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from ..URLBase import URLBase
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from ..common import ConfigFormat
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from ..common import CONFIG_FORMATS
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from ..utils import GET_SCHEMA_RE
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from ..utils import parse_list
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class ConfigBase(URLBase):
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"""
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This is the base class for all supported configuration sources
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"""
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# The Default Encoding to use if not otherwise detected
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encoding = 'utf-8'
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# The default expected configuration format unless otherwise
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# detected by the sub-modules
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default_config_format = ConfigFormat.TEXT
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# This is only set if the user overrides the config format on the URL
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# this should always initialize itself as None
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config_format = None
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# Don't read any more of this amount of data into memory as there is no
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# reason we should be reading in more. This is more of a safe guard then
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# anything else. 128KB (131072B)
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max_buffer_size = 131072
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def __init__(self, **kwargs):
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"""
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Initialize some general logging and common server arguments that will
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keep things consistent when working with the configurations that
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inherit this class.
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"""
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super(ConfigBase, self).__init__(**kwargs)
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# Tracks previously loaded content for speed
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self._cached_servers = None
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if 'encoding' in kwargs:
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# Store the encoding
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self.encoding = kwargs.get('encoding')
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if 'format' in kwargs:
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# Store the enforced config format
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self.config_format = kwargs.get('format').lower()
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if self.config_format not in CONFIG_FORMATS:
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# Simple error checking
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err = 'An invalid config format ({}) was specified.'.format(
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self.config_format)
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self.logger.warning(err)
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raise TypeError(err)
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return
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def servers(self, asset=None, cache=True, **kwargs):
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"""
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Performs reads loaded configuration and returns all of the services
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that could be parsed and loaded.
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"""
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if cache is True and isinstance(self._cached_servers, list):
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# We already have cached results to return; use them
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return self._cached_servers
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# Our response object
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self._cached_servers = list()
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# read() causes the child class to do whatever it takes for the
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# config plugin to load the data source and return unparsed content
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# None is returned if there was an error or simply no data
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content = self.read(**kwargs)
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if not isinstance(content, six.string_types):
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# Nothing more to do
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return list()
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# Our Configuration format uses a default if one wasn't one detected
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# or enfored.
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config_format = \
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self.default_config_format \
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if self.config_format is None else self.config_format
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# Dynamically load our parse_ function based on our config format
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fn = getattr(ConfigBase, 'config_parse_{}'.format(config_format))
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# Execute our config parse function which always returns a list
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self._cached_servers.extend(fn(content=content, asset=asset))
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if len(self._cached_servers):
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self.logger.info('Loaded {} entries from {}'.format(
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len(self._cached_servers), self.url()))
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else:
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self.logger.warning('Failed to load configuration from {}'.format(
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self.url()))
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return self._cached_servers
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def read(self):
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"""
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This object should be implimented by the child classes
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"""
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return None
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@staticmethod
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def parse_url(url, verify_host=True):
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"""Parses the URL and returns it broken apart into a dictionary.
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This is very specific and customized for Apprise.
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Args:
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url (str): The URL you want to fully parse.
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verify_host (:obj:`bool`, optional): a flag kept with the parsed
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URL which some child classes will later use to verify SSL
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keys (if SSL transactions take place). Unless under very
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specific circumstances, it is strongly recomended that
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you leave this default value set to True.
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Returns:
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A dictionary is returned containing the URL fully parsed if
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successful, otherwise None is returned.
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"""
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results = URLBase.parse_url(url, verify_host=verify_host)
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if not results:
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# We're done; we failed to parse our url
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return results
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# Allow overriding the default config format
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if 'format' in results['qsd']:
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results['format'] = results['qsd'].get('format')
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if results['format'] not in CONFIG_FORMATS:
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URLBase.logger.warning(
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'Unsupported format specified {}'.format(
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results['format']))
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del results['format']
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# Defines the encoding of the payload
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if 'encoding' in results['qsd']:
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results['encoding'] = results['qsd'].get('encoding')
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return results
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@staticmethod
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def config_parse_text(content, asset=None):
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"""
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Parse the specified content as though it were a simple text file only
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containing a list of URLs. Return a list of loaded notification plugins
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Optionally associate an asset with the notification.
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The file syntax is:
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#
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# pound/hashtag allow for line comments
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#
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# One or more tags can be idenified using comma's (,) to separate
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# them.
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<Tag(s)>=<URL>
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# Or you can use this format (no tags associated)
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<URL>
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"""
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# For logging, track the line number
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line = 0
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response = list()
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# Define what a valid line should look like
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valid_line_re = re.compile(
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r'^\s*(?P<line>([;#]+(?P<comment>.*))|'
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r'(\s*(?P<tags>[^=]+)=|=)?\s*'
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r'(?P<url>[a-z0-9]{2,9}://.*))?$', re.I)
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try:
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# split our content up to read line by line
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content = re.split(r'\r*\n', content)
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except TypeError:
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# content was not expected string type
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ConfigBase.logger.error('Invalid apprise text data specified')
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return list()
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for entry in content:
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# Increment our line count
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line += 1
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result = valid_line_re.match(entry)
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if not result:
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# Invalid syntax
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ConfigBase.logger.error(
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'Invalid apprise text format found '
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'{} on line {}.'.format(entry, line))
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# Assume this is a file we shouldn't be parsing. It's owner
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# can read the error printed to screen and take action
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# otherwise.
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return list()
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if result.group('comment') or not result.group('line'):
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# Comment/empty line; do nothing
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continue
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# Store our url read in
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url = result.group('url')
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# swap hash (#) tag values with their html version
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_url = url.replace('/#', '/%23')
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# Attempt to acquire the schema at the very least to allow our
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# plugins to determine if they can make a better
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# interpretation of a URL geared for them
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schema = GET_SCHEMA_RE.match(_url)
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# Ensure our schema is always in lower case
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schema = schema.group('schema').lower()
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# Some basic validation
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if schema not in plugins.SCHEMA_MAP:
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ConfigBase.logger.warning(
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'Unsupported schema {} on line {}.'.format(
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schema, line))
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continue
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# Parse our url details of the server object as dictionary
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# containing all of the information parsed from our URL
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results = plugins.SCHEMA_MAP[schema].parse_url(_url)
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if results is None:
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# Failed to parse the server URL
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ConfigBase.logger.warning(
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'Unparseable URL {} on line {}.'.format(url, line))
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continue
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# Build a list of tags to associate with the newly added
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# notifications if any were set
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results['tag'] = set(parse_list(result.group('tags')))
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ConfigBase.logger.trace(
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'URL {} unpacked as:{}{}'.format(
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url, os.linesep, os.linesep.join(
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['{}="{}"'.format(k, v) for k, v in results.items()])))
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# Prepare our Asset Object
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results['asset'] = \
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asset if isinstance(asset, AppriseAsset) else AppriseAsset()
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try:
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# Attempt to create an instance of our plugin using the
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# parsed URL information
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plugin = plugins.SCHEMA_MAP[results['schema']](**results)
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# Create log entry of loaded URL
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ConfigBase.logger.debug('Loaded URL: {}'.format(plugin.url()))
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except Exception as e:
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# the arguments are invalid or can not be used.
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ConfigBase.logger.warning(
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'Could not load URL {} on line {}.'.format(
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url, line))
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ConfigBase.logger.debug('Loading Exception: %s' % str(e))
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continue
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# if we reach here, we successfully loaded our data
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response.append(plugin)
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# Return what was loaded
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return response
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@staticmethod
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def config_parse_yaml(content, asset=None):
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"""
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Parse the specified content as though it were a yaml file
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specifically formatted for apprise. Return a list of loaded
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notification plugins.
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Optionally associate an asset with the notification.
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"""
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response = list()
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try:
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# Load our data (safely)
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result = yaml.load(content, Loader=yaml.SafeLoader)
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except (AttributeError, yaml.error.MarkedYAMLError) as e:
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# Invalid content
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ConfigBase.logger.error(
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'Invalid apprise yaml data specified.')
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ConfigBase.logger.debug(
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'YAML Exception:{}{}'.format(os.linesep, e))
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return list()
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if not isinstance(result, dict):
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# Invalid content
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ConfigBase.logger.error('Invalid apprise yaml structure specified')
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return list()
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# YAML Version
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version = result.get('version', 1)
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if version != 1:
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# Invalid syntax
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ConfigBase.logger.error(
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'Invalid apprise yaml version specified {}.'.format(version))
|
|
|
|
|
return list()
|
|
|
|
|
|
|
|
|
|
#
|
|
|
|
|
# global asset object
|
|
|
|
|
#
|
|
|
|
|
asset = asset if isinstance(asset, AppriseAsset) else AppriseAsset()
|
|
|
|
|
tokens = result.get('asset', None)
|
|
|
|
|
if tokens and isinstance(tokens, dict):
|
|
|
|
|
for k, v in tokens.items():
|
|
|
|
|
|
|
|
|
|
if k.startswith('_') or k.endswith('_'):
|
|
|
|
|
# Entries are considered reserved if they start or end
|
|
|
|
|
# with an underscore
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Ignored asset key "{}".'.format(k))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
if not (hasattr(asset, k) and
|
|
|
|
|
isinstance(getattr(asset, k), six.string_types)):
|
|
|
|
|
# We can't set a function or non-string set value
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Invalid asset key "{}".'.format(k))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
if v is None:
|
|
|
|
|
# Convert to an empty string
|
|
|
|
|
v = ''
|
|
|
|
|
|
|
|
|
|
if not isinstance(v, six.string_types):
|
|
|
|
|
# we must set strings with a string
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Invalid asset value to "{}".'.format(k))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# Set our asset object with the new value
|
|
|
|
|
setattr(asset, k, v.strip())
|
|
|
|
|
|
|
|
|
|
#
|
|
|
|
|
# global tag root directive
|
|
|
|
|
#
|
|
|
|
|
global_tags = set()
|
|
|
|
|
|
|
|
|
|
tags = result.get('tag', None)
|
|
|
|
|
if tags and isinstance(tags, (list, tuple, six.string_types)):
|
|
|
|
|
# Store any preset tags
|
|
|
|
|
global_tags = set(parse_list(tags))
|
|
|
|
|
|
|
|
|
|
#
|
|
|
|
|
# urls root directive
|
|
|
|
|
#
|
|
|
|
|
urls = result.get('urls', None)
|
|
|
|
|
if not isinstance(urls, (list, tuple)):
|
|
|
|
|
# Unsupported
|
|
|
|
|
ConfigBase.logger.error(
|
|
|
|
|
'Missing "urls" directive in apprise yaml.')
|
|
|
|
|
return list()
|
|
|
|
|
|
|
|
|
|
# Iterate over each URL
|
|
|
|
|
for no, url in enumerate(urls):
|
|
|
|
|
|
|
|
|
|
# Our results object is what we use to instantiate our object if
|
|
|
|
|
# we can. Reset it to None on each iteration
|
|
|
|
|
results = list()
|
|
|
|
|
|
|
|
|
|
if isinstance(url, six.string_types):
|
|
|
|
|
# We're just a simple URL string
|
|
|
|
|
|
|
|
|
|
# swap hash (#) tag values with their html version
|
|
|
|
|
_url = url.replace('/#', '/%23')
|
|
|
|
|
|
|
|
|
|
# Attempt to acquire the schema at the very least to allow our
|
|
|
|
|
# plugins to determine if they can make a better
|
|
|
|
|
# interpretation of a URL geared for them
|
|
|
|
|
schema = GET_SCHEMA_RE.match(_url)
|
|
|
|
|
if schema is None:
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Unsupported schema in urls entry #{}'.format(no + 1))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# Ensure our schema is always in lower case
|
|
|
|
|
schema = schema.group('schema').lower()
|
|
|
|
|
|
|
|
|
|
# Some basic validation
|
|
|
|
|
if schema not in plugins.SCHEMA_MAP:
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Unsupported schema {} in urls entry #{}'.format(
|
|
|
|
|
schema, no + 1))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# Parse our url details of the server object as dictionary
|
|
|
|
|
# containing all of the information parsed from our URL
|
|
|
|
|
_results = plugins.SCHEMA_MAP[schema].parse_url(_url)
|
|
|
|
|
if _results is None:
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Unparseable {} based url; entry #{}'.format(
|
|
|
|
|
schema, no + 1))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# add our results to our global set
|
|
|
|
|
results.append(_results)
|
|
|
|
|
|
|
|
|
|
elif isinstance(url, dict):
|
|
|
|
|
# We are a url string with additional unescaped options
|
|
|
|
|
if six.PY2:
|
|
|
|
|
_url, tokens = next(url.iteritems())
|
|
|
|
|
else: # six.PY3
|
|
|
|
|
_url, tokens = next(iter(url.items()))
|
|
|
|
|
|
|
|
|
|
# swap hash (#) tag values with their html version
|
|
|
|
|
_url = _url.replace('/#', '/%23')
|
|
|
|
|
|
|
|
|
|
# Get our schema
|
|
|
|
|
schema = GET_SCHEMA_RE.match(_url)
|
|
|
|
|
if schema is None:
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Unsupported schema in urls entry #{}'.format(no + 1))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# Ensure our schema is always in lower case
|
|
|
|
|
schema = schema.group('schema').lower()
|
|
|
|
|
|
|
|
|
|
# Some basic validation
|
|
|
|
|
if schema not in plugins.SCHEMA_MAP:
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Unsupported schema {} in urls entry #{}'.format(
|
|
|
|
|
schema, no + 1))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# Parse our url details of the server object as dictionary
|
|
|
|
|
# containing all of the information parsed from our URL
|
|
|
|
|
_results = plugins.SCHEMA_MAP[schema].parse_url(_url)
|
|
|
|
|
if _results is None:
|
|
|
|
|
# Setup dictionary
|
|
|
|
|
_results = {
|
|
|
|
|
# Minimum requirements
|
|
|
|
|
'schema': schema,
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if tokens is not None:
|
|
|
|
|
# populate and/or override any results populated by
|
|
|
|
|
# parse_url()
|
|
|
|
|
for entries in tokens:
|
|
|
|
|
# Copy ourselves a template of our parsed URL as a base
|
|
|
|
|
# to work with
|
|
|
|
|
r = _results.copy()
|
|
|
|
|
|
|
|
|
|
# We are a url string with additional unescaped options
|
|
|
|
|
if isinstance(entries, dict):
|
|
|
|
|
if six.PY2:
|
|
|
|
|
_url, tokens = next(url.iteritems())
|
|
|
|
|
else: # six.PY3
|
|
|
|
|
_url, tokens = next(iter(url.items()))
|
|
|
|
|
|
|
|
|
|
# Tags you just can't over-ride
|
|
|
|
|
if 'schema' in entries:
|
|
|
|
|
del entries['schema']
|
|
|
|
|
|
|
|
|
|
# Extend our dictionary with our new entries
|
|
|
|
|
r.update(entries)
|
|
|
|
|
|
|
|
|
|
# add our results to our global set
|
|
|
|
|
results.append(r)
|
|
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
# add our results to our global set
|
|
|
|
|
results.append(_results)
|
|
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
# Unsupported
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Unsupported apprise yaml entry #{}'.format(no + 1))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# Track our entries
|
|
|
|
|
entry = 0
|
|
|
|
|
|
|
|
|
|
while len(results):
|
|
|
|
|
# Increment our entry count
|
|
|
|
|
entry += 1
|
|
|
|
|
|
|
|
|
|
# Grab our first item
|
|
|
|
|
_results = results.pop(0)
|
|
|
|
|
|
|
|
|
|
# tag is a special keyword that is managed by apprise object.
|
|
|
|
|
# The below ensures our tags are set correctly
|
|
|
|
|
if 'tag' in _results:
|
|
|
|
|
# Tidy our list up
|
|
|
|
|
_results['tag'] = \
|
|
|
|
|
set(parse_list(_results['tag'])) | global_tags
|
|
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
# Just use the global settings
|
|
|
|
|
_results['tag'] = global_tags
|
|
|
|
|
|
|
|
|
|
ConfigBase.logger.trace(
|
|
|
|
|
'URL #{}: {} unpacked as:{}{}'
|
|
|
|
|
.format(no + 1, url, os.linesep, os.linesep.join(
|
|
|
|
|
['{}="{}"'.format(k, a)
|
|
|
|
|
for k, a in _results.items()])))
|
|
|
|
|
|
|
|
|
|
# Prepare our Asset Object
|
|
|
|
|
_results['asset'] = asset
|
|
|
|
|
|
|
|
|
|
try:
|
|
|
|
|
# Attempt to create an instance of our plugin using the
|
|
|
|
|
# parsed URL information
|
|
|
|
|
plugin = plugins.SCHEMA_MAP[_results['schema']](**_results)
|
|
|
|
|
|
|
|
|
|
# Create log entry of loaded URL
|
|
|
|
|
ConfigBase.logger.debug(
|
|
|
|
|
'Loaded URL: {}'.format(plugin.url()))
|
|
|
|
|
|
|
|
|
|
except Exception:
|
|
|
|
|
# the arguments are invalid or can not be used.
|
|
|
|
|
ConfigBase.logger.warning(
|
|
|
|
|
'Could not load apprise yaml entry #{}, item #{}'
|
|
|
|
|
.format(no + 1, entry))
|
|
|
|
|
continue
|
|
|
|
|
|
|
|
|
|
# if we reach here, we successfully loaded our data
|
|
|
|
|
response.append(plugin)
|
|
|
|
|
|
|
|
|
|
return response
|
|
|
|
|
|
|
|
|
|
def pop(self, index):
|
|
|
|
|
"""
|
|
|
|
|
Removes an indexed Notification Service from the stack and
|
|
|
|
|
returns it.
|
|
|
|
|
"""
|
|
|
|
|
|
|
|
|
|
if not isinstance(self._cached_servers, list):
|
|
|
|
|
# Generate ourselves a list of content we can pull from
|
|
|
|
|
self.servers(cache=True)
|
|
|
|
|
|
|
|
|
|
# Pop the element off of the stack
|
|
|
|
|
return self._cached_servers.pop(index)
|
|
|
|
|
|
|
|
|
|
def __getitem__(self, index):
|
|
|
|
|
"""
|
|
|
|
|
Returns the indexed server entry associated with the loaded
|
|
|
|
|
notification servers
|
|
|
|
|
"""
|
|
|
|
|
if not isinstance(self._cached_servers, list):
|
|
|
|
|
# Generate ourselves a list of content we can pull from
|
|
|
|
|
self.servers(cache=True)
|
|
|
|
|
|
|
|
|
|
return self._cached_servers[index]
|
|
|
|
|
|
|
|
|
|
def __iter__(self):
|
|
|
|
|
"""
|
|
|
|
|
Returns an iterator to our server list
|
|
|
|
|
"""
|
|
|
|
|
if not isinstance(self._cached_servers, list):
|
|
|
|
|
# Generate ourselves a list of content we can pull from
|
|
|
|
|
self.servers(cache=True)
|
|
|
|
|
|
|
|
|
|
return iter(self._cached_servers)
|
|
|
|
|
|
|
|
|
|
def __len__(self):
|
|
|
|
|
"""
|
|
|
|
|
Returns the total number of servers loaded
|
|
|
|
|
"""
|
|
|
|
|
if not isinstance(self._cached_servers, list):
|
|
|
|
|
# Generate ourselves a list of content we can pull from
|
|
|
|
|
self.servers(cache=True)
|
|
|
|
|
|
|
|
|
|
return len(self._cached_servers)
|
