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482 lines
16 KiB
Python
482 lines
16 KiB
Python
# -*- coding: utf-8 -*-
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# BSD 3-Clause License
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#
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# Apprise - Push Notification Library.
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# Copyright (c) 2023, Chris Caron <lead2gold@gmail.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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import re
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import requests
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from .NotifyBase import NotifyBase
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from ..URLBase import PrivacyMode
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from ..common import NotifyImageSize
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from ..common import NotifyType
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from ..AppriseLocale import gettext_lazy as _
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# Defines the method to send the notification
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METHODS = (
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'POST',
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'GET',
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'DELETE',
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'PUT',
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'HEAD',
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'PATCH'
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)
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class NotifyForm(NotifyBase):
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"""
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A wrapper for Form Notifications
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"""
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# Support
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# - file*
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# - file?
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# - file*name
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# - file?name
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# - ?file
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# - *file
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# - file
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# The code will convert the ? or * to the digit increments
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__attach_as_re = re.compile(
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r'((?P<match1>(?P<id1a>[a-z0-9_-]+)?'
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r'(?P<wc1>[*?+$:.%]+)(?P<id1b>[a-z0-9_-]+))'
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r'|(?P<match2>(?P<id2>[a-z0-9_-]+)(?P<wc2>[*?+$:.%]?)))',
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re.IGNORECASE)
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# Our count
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attach_as_count = '{:02d}'
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# the default attach_as value
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attach_as_default = f'file{attach_as_count}'
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# The default descriptive name associated with the Notification
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service_name = 'Form'
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# The default protocol
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protocol = 'form'
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# The default secure protocol
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secure_protocol = 'forms'
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# A URL that takes you to the setup/help of the specific protocol
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setup_url = 'https://github.com/caronc/apprise/wiki/Notify_Custom_Form'
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# Allows the user to specify the NotifyImageSize object
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image_size = NotifyImageSize.XY_128
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# Disable throttle rate for Form requests since they are normally
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# local anyway
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request_rate_per_sec = 0
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# Define object templates
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templates = (
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'{schema}://{host}',
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'{schema}://{host}:{port}',
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'{schema}://{user}@{host}',
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'{schema}://{user}@{host}:{port}',
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'{schema}://{user}:{password}@{host}',
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'{schema}://{user}:{password}@{host}:{port}',
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)
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# Define our tokens; these are the minimum tokens required required to
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# be passed into this function (as arguments). The syntax appends any
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# previously defined in the base package and builds onto them
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template_tokens = dict(NotifyBase.template_tokens, **{
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'host': {
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'name': _('Hostname'),
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'type': 'string',
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'required': True,
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},
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'port': {
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'name': _('Port'),
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'type': 'int',
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'min': 1,
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'max': 65535,
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},
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'user': {
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'name': _('Username'),
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'type': 'string',
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},
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'password': {
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'name': _('Password'),
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'type': 'string',
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'private': True,
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},
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})
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# Define our template arguments
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template_args = dict(NotifyBase.template_args, **{
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'method': {
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'name': _('Fetch Method'),
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'type': 'choice:string',
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'values': METHODS,
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'default': METHODS[0],
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},
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'attach-as': {
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'name': _('Attach File As'),
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'type': 'string',
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'default': 'file*',
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'map_to': 'attach_as',
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},
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})
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# Define any kwargs we're using
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template_kwargs = {
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'headers': {
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'name': _('HTTP Header'),
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'prefix': '+',
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},
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'payload': {
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'name': _('Payload Extras'),
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'prefix': ':',
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},
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'params': {
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'name': _('GET Params'),
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'prefix': '-',
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},
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}
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def __init__(self, headers=None, method=None, payload=None, params=None,
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attach_as=None, **kwargs):
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"""
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Initialize Form 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().__init__(**kwargs)
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self.fullpath = kwargs.get('fullpath')
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if not isinstance(self.fullpath, str):
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self.fullpath = ''
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self.method = self.template_args['method']['default'] \
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if not isinstance(method, str) else method.upper()
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if self.method not in METHODS:
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msg = 'The method specified ({}) is invalid.'.format(method)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Custom File Attachment Over-Ride Support
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if not isinstance(attach_as, str):
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# Default value
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self.attach_as = self.attach_as_default
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self.attach_multi_support = True
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else:
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result = self.__attach_as_re.match(attach_as.strip())
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if not result:
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msg = 'The attach-as specified ({}) is invalid.'.format(
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attach_as)
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self.logger.warning(msg)
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raise TypeError(msg)
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self.attach_as = ''
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self.attach_multi_support = False
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if result.group('match1'):
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if result.group('id1a'):
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self.attach_as += result.group('id1a')
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self.attach_as += self.attach_as_count
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self.attach_multi_support = True
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self.attach_as += result.group('id1b')
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else: # result.group('match2'):
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self.attach_as += result.group('id2')
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if result.group('wc2'):
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self.attach_as += self.attach_as_count
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self.attach_multi_support = True
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self.params = {}
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if params:
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# Store our extra headers
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self.params.update(params)
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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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self.payload_extras = {}
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if payload:
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# Store our extra payload entries
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self.payload_extras.update(payload)
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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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# Define any URL parameters
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params = {
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'method': self.method,
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}
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# Extend our parameters
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params.update(self.url_parameters(privacy=privacy, *args, **kwargs))
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# Append our headers into our parameters
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params.update({'+{}'.format(k): v for k, v in self.headers.items()})
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# Append our GET params into our parameters
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params.update({'-{}'.format(k): v for k, v in self.params.items()})
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# Append our payload extra's into our parameters
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params.update(
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{':{}'.format(k): v for k, v in self.payload_extras.items()})
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if self.attach_as != self.attach_as_default:
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# Provide Attach-As extension details
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params['attach-as'] = self.attach_as
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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=NotifyForm.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=NotifyForm.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}?{params}'.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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# never encode hostname since we're expecting it to be a valid one
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hostname=self.host,
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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=NotifyForm.quote(self.fullpath, safe='/')
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if self.fullpath else '/',
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params=NotifyForm.urlencode(params),
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)
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def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,
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**kwargs):
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"""
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Perform Form Notification
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"""
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# Prepare HTTP Headers
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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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# Track our potential attachments
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files = []
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if attach:
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for no, attachment in enumerate(attach, start=1):
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# Perform some simple error checking
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if not attachment:
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# We could not access the attachment
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self.logger.error(
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'Could not access attachment {}.'.format(
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attachment.url(privacy=True)))
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return False
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try:
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files.append((
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self.attach_as.format(no)
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if self.attach_multi_support else self.attach_as, (
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attachment.name,
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open(attachment.path, 'rb'),
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attachment.mimetype)
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))
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except (OSError, IOError) as e:
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self.logger.warning(
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'An I/O error occurred while opening {}.'.format(
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attachment.name if attachment else 'attachment'))
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self.logger.debug('I/O Exception: %s' % str(e))
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return False
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if not self.attach_multi_support and no > 1:
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self.logger.warning(
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'Multiple attachments provided while '
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'form:// Multi-Attachment Support not enabled')
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# prepare Form Object
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payload = {
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# Version: Major.Minor, Major is only updated if the entire
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# schema is changed. If just adding new items (or removing
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# old ones, only increment the Minor!
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'version': '1.0',
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'title': title,
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'message': body,
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'type': notify_type,
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}
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# Apply any/all payload over-rides defined
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payload.update(self.payload_extras)
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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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# Set our schema
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schema = 'https' if self.secure else 'http'
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url = '%s://%s' % (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('Form %s URL: %s (cert_verify=%r)' % (
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self.method, url, self.verify_certificate,
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))
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self.logger.debug('Form Payload: %s' % str(payload))
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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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if self.method == 'GET':
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method = requests.get
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payload.update(self.params)
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elif self.method == 'PUT':
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method = requests.put
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elif self.method == 'PATCH':
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method = requests.patch
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elif self.method == 'DELETE':
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method = requests.delete
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elif self.method == 'HEAD':
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method = requests.head
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else: # POST
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method = requests.post
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try:
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r = method(
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url,
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files=None if not files else files,
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data=payload if self.method != 'GET' else None,
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params=payload if self.method == 'GET' else self.params,
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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.request_timeout,
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)
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if r.status_code < 200 or r.status_code >= 300:
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# We had a problem
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status_str = \
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NotifyForm.http_response_code_lookup(r.status_code)
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self.logger.warning(
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'Failed to send Form %s notification: %s%serror=%s.',
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self.method,
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status_str,
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', ' if status_str else '',
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str(r.status_code))
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self.logger.debug('Response Details:\r\n{}'.format(r.content))
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# Return; we're done
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return False
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else:
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self.logger.info('Sent Form %s notification.', self.method)
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except requests.RequestException as e:
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self.logger.warning(
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'A Connection error occurred sending Form '
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'notification to %s.' % self.host)
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self.logger.debug('Socket Exception: %s' % str(e))
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# Return; we're done
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return False
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except (OSError, IOError) as e:
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self.logger.warning(
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'An I/O error occurred while reading one of the '
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'attached files.')
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self.logger.debug('I/O Exception: %s' % str(e))
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return False
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finally:
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for file in files:
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# Ensure all files are closed
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file[1][1].close()
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return True
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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 re-instantiate this object.
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"""
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results = NotifyBase.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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# store any additional payload extra's defined
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results['payload'] = {NotifyForm.unquote(x): NotifyForm.unquote(y)
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for x, y in results['qsd:'].items()}
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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 and tidy entries by unquoting them
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results['headers'] = {NotifyForm.unquote(x): NotifyForm.unquote(y)
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for x, y in results['qsd+'].items()}
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# Add our GET paramters in the event the user wants to pass these along
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results['params'] = {NotifyForm.unquote(x): NotifyForm.unquote(y)
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for x, y in results['qsd-'].items()}
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# Allow Attach-As Support which over-rides the name of the filename
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# posted with the form://
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# the default is file01, file02, file03, etc
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if 'attach-as' in results['qsd'] and len(results['qsd']['attach-as']):
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results['attach_as'] = results['qsd']['attach-as']
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# Set method if not otherwise set
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if 'method' in results['qsd'] and len(results['qsd']['method']):
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results['method'] = NotifyForm.unquote(results['qsd']['method'])
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return results
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